Abstract:
A glue bottle with flow regulation comprises a bottle body, a bottle cap, and a liquid outlet cap engaged with the bottle cap through thread. The bottle cap is partially contained in the liquid outlet cap. A cavity is formed between the inner wall of the liquid outlet cap and the outer wall of the bottle cap. and is provided with a first opening and a second opening. A seal body is arranged on the top part of the bottle cap, and is positioned inside of the cavity. The position of the seal body in the cavity is adjusted by rotating the liquid outlet cap relative to the bottle cap. The closer the seal body is to the second opening, the smaller the gap is between the liquid outlet cap and the bottle cap. The glue bottle is capable of precisely controlling the quantity of the glue flowing out.

Description:
FIELD OF THE INVENTION 
     The present invention relates to a glue bottle, and particularly to a glue bottle which is capable of regulating the flow. 
     DESCRIPTION OF THE PRIOR ART 
     The bottle body of glue bottles of prior art is mostly made of elastic material, and the opening of the bottle is mounted with a bottle cap having a small hole. The bottle body is pressed when in use, and the glue inside the bottle is pressed out through the small hole to be applied on desired places. However, when the glue bottle is in use, the situation that too much glue is pressed out by one press often occurs, and the superfluous glue causes much trouble to the user. 
     Thus a glue bottle of which the flow can be regulated has been developed. Such as a flow control valve has been disclosed in U.S. Pat. No. 6,662,973B1. The flow control valve can be used for glue bottle, thereby controlling the quantity of the glue flowing out from the opening of the bottle by each press. The flow control valve includes a sealing base, a sealing ball and a spring. The sealing base is provided with a central through hole arranged in the channel from the bottle body to the opening. The sealing ball is used for engaging with valve body and is positioned at the top part of the valve body. The spring is arranged between the sealing ball and the opening. When in use, the body of the glue bottle will be pressed. The glue in the bottle body would be pressed through the valve body against the sealing ball. The spring would be pressed. The sealing ball would separate from the top part of the valve body by the force of the glue. Thus the glue would leak through the flow aperture formed centrally therethrough of the valve body, and the glue would flow from the open end of the glue bottle for use. After the body of the glue bottle is ceased pressing, the glue in the bottle body would not be pressed. Thus the glue would not be against the sealing ball. The sealing ball would be reseated by the restoring force of the spring, sealing the flow aperture formed centrally therethrough again at the open end of the top part of the valve body. Since the stronger the squeeze on the bottle body is, the stronger the squeeze on the glue in the bottle body is, thus the pressure which glue make on sealing ball would be stronger. The shape change of the spring by the pressure against the spring would be greater. Then the distance between sealing ball and the top part of the valve body would be greater. The squeezed glue would leak through the flow aperture formed centrally therethrough of valve body, and the quantity of the glue which flows from the open end of the glue bottle would be greater. While the smaller the squeeze on the bottle body is, the smaller the squeeze on the glue in the bottle body is. Thus the pressure which glue make on sealing ball would be smaller. The shape change of the spring by the pressure against the spring would be smaller. Then the distance between sealing ball and the top part of the valve body would be shorter. The squeezed glue would leak through the flow aperture formed centrally therethrough of valve body, and the quantity of the glue which flows from the open end of the glue bottle would be smaller. As can be seen, the quantity of the glue which flows from the open end of the glue bottle which adopts the flow control valve of the above prior art by controlling the squeeze on the glue bottle. 
     However, it has been found that the glue bottle using the flow control valve of prior art is unstable in controlling the quantity of the glue flowing out through the opening thereof. As the users, especially the young and the old, cannot properly control the pressing force applied on the glue bottle, therefore, they cannot cause proper amount of glue to flow out through the opening. 
     Therefore, the person skilled in the art devotes to developing a glue bottle with flow regulation to realize convenient and precise control of the quantity of the glue flowing out through the opening of the glue bottle. 
     SUMMARY OF THE INVENTION 
     In view of the above defects of the prior art, the technical problem to be solved by the invention is to provide a glue bottle with flow regulation. 
     To realize the above purpose, the invention provides a glue bottle with flow regulation. The glue bottle includes a bottle body and a bottle cap engaging with the above bottle body. The glue bottle is characterized in that it also includes a liquid outlet cap engaging with the bottle cap through thread. The bottle cap is partially contained in the liquid outlet cap. A cavity is formed between the inner wall of the liquid outlet cap and the outer wall of the bottle cap. The cavity has a first opening and a second opening. The first opening is provided in the bottle cap. The second opening is provided in the liquid outlet cap. A seal body is arranged on the top part of bottle cap and is positioned in the cavity. The position of the seal body in the cavity is adjusted through rotating the outlet cap relative to the bottle cap. The closer the seal body is to the second opening, the smaller the gap is between the seal body and the inner wall of the liquid outlet cap. 
     Further, the seal body is cylindrical. 
     Further, the diameter of the seal body is greater than that of the second opening. 
     Further, the seal body is connected to the top part of the bottle cap through the support shafts. 
     Further, the number of the support shafts is three. 
     Further, the material of the seal body, the support shafts and the bottle cap are made of the same material. 
     Further, the seal body, the support shafts and the bottle cap are integrated. 
     Further, the bottle cap engages with the bottle body through thread. 
     Further, a first sealing ring is provided between the bottle cap and the bottle body. The first sealing ring causes sealing between the bottle cap and the bottle body. 
     Further, a second sealing ring is provided between the liquid outlet cap and the bottle cap. The second sealing ring causes sealing between the liquid outlet cap and the bottle cap. 
     Further, the diameter of the cross-section of the cavity at the first opening is greater than that at the second opening. 
     Further, the diameter of the cross-section of the cavity lessens gradually from the first opening to the second opening. 
     Optionally, a hairbrush is arranged on the top part of the liquid outlet cap. 
     Further, the hair brush surrounds the second opening. The glue in the bottle body flows from the first opening to the cavity, and the glue in the bottle body flows from the second opening to the hairbrush. 
     Optionally, a roller wheel is arranged on the top part of the liquid outlet cap. 
     Further, the edge of the roller wheel is above the second opening. The glue in the bottle body flows from the first opening to the cavity and flows out from the second opening to the edge of the roller wheel. 
     In an embodiment of the invention, a glue bottle with flow regulation having a hairbrush is provided, which includes a bottle body, a bottle cap and a liquid outlet cap. The bottle cap engages with the bottle body through thread therebetween, and a first sealing ring is provided therebetween to achieve sealing therebetween. The bottle cap engages with the liquid outlet cap through thread therebetween. The bottle cap is partially contained in the liquid outlet cap and a second sealing ring is provided therebetween to achieve sealing therebetween. A cavity is formed between the inner wall of the liquid outlet cap and the outer wall of the bottle cap. The cavity has a first opening and a second opening. The first opening is provided in the bottle cap. The second opening is provided in the liquid outlet cap. The diameter of the cross-section of the cavity lessens gradually from the first opening to the second opening. A cylindrical seal body is arranged on the top part of the bottle cap, and the diameter of the seal body is greater than that of the second opening. The seal body is positioned in the cavity and is connected to the top part of the bottle cap through three support shafts. The seal body, the support shafts and the bottle cap are integrated. A hairbrush is arranged on the top part of the liquid outlet cap, and the hairbrush surrounds the second opening. The position of the seal body in the cavity is adjusted in use through rotating the liquid outlet cap relative to the bottle cap. The closer the seal body is to the second opening, the smaller the gap is between the seal body and the inner wall of the liquid outlet cap. When the bottle body is pressed, the glue in the bottle body flows from the first opening to the cavity and flows out from the second opening to the hairbrush for use. 
     Another embodiment of the invention provides a glue bottle with flow regulation which has a roller wheel, including a bottle body, a bottle cap and a liquid outlet cap. The bottle cap engages with the bottle body through thread therebetween, and a first sealing ring is provided therebetween to achieve seal therebetween. The bottle cap engages with the liquid outlet cap through thread therebetween. The bottle cap is partially contained in the liquid outlet cap and a second sealing ring is provided therebetween to achieve seal therebetween. A cavity is formed between the inner wall of the liquid outlet cap and the outer wall of the bottle cap. The cavity has a first opening and a second opening. The first opening is provided in the bottle cap. The second opening is provided in the liquid outlet cap. The diameter of the cross-section of the cavity lessens gradually from the first opening to the second opening. A cylindrical seal body is arranged on the top part of the bottle cap, and the diameter of the seal body is greater than that of the second opening. The seal body positioned in the cavity is connected to the top part of the bottle cap through three support shafts. The seal body, the support shaft and the bottle cap are integrated. A roller wheel is arranged on the top part of the liquid outlet, and the edge of the roller wheel is above the second opening. The position of the seal body in the cavity is adjusted in use through rotating the liquid outlet cap relative to the bottle cap. The closer the seal body is to the second opening, the smaller the gap is between the seal body and the inner wall of the liquid outlet cap. When the bottle body is pressed, the glue in the bottle body flows from the first opening to the cavity and flows out from the second opening to the edge of the roller wheel for use. 
     It can be seen that the glue bottle with flow regulation of the invention realizes forming a cavity between the bottle cap and liquid outlet cap through arranging a liquid outlet cap on the bottle cap for engaging with bottle cap through thread, and a seal body which is connected to the bottle cap by support shafts at the first opening of the bottle cap. The position of the seal body in the cavity could be adjusted in use, when the liquid outlet cap rotating relative to the bottle cap. And then by adjusting the gap between the seal body and the inner wall of the liquid outlet cap, the quantity of the glue in the glue bottle with flow regulation of the invention flowing from gap can be controlled. Since the liquid outlet cap of the glue bottle with flow regulation of the invention rotating relative to the bottle cap, the gap between the seal body and the liquid outlet cap can be controlled accurately. Thus the glue bottle with flow regulation of the invention realizes controlling the quantity of the glue which flows from the glue bottle accurately. And the glue bottle with flow regulation of the invention has a simple structure, convenience of use and high practical value. The conception, concrete structure and technical effect of the invention will be illustrated further below to know the purpose, characteristic and effect adequately. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded structural view of the glue bottle with flow regulation in the first embodiment of the present invention. 
         FIG. 2  is an exploded structural view of the glue bottle with flow regulation in the second embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     A glue bottle with flow regulation which has a hairbrush is provided in the first embodiment of the invention. The structural exploded view of the glue bottle is shown in  FIG. 1 , and it includes bottle body  100 , bottle cap  110  and liquid outlet cap  120 . 
     Bottle cap  110  and bottle body  100  are engaged through thread, and there is the first sealing ring therebetween to achieve seal therebetween. As shown in  FIG. 1 , in the embodiment, an external thread around the bottleneck of the bottle body  100 , and an internal thread which engages with the external thread in the inner wall of the bottle cap  110 . The bottle cap  110  is installed on the bottle body  100  with an internal thread engaging with the external thread. The first sealing ring  131  is installed on the bottleneck of the bottle body  100 . After the bottle cap  110  engaging with bottle body  100  through thread, the first sealing ring  131  is fixed between the bottleneck of the bottle body  100  and the inner wall of the bottle cap  110 , forming the seal between the bottle cap  110  and the bottle body  100 . 
     The bottle cap  110  and the liquid outlet cap  120  are engaged through thread. The bottle cap  110  is partially contained in the liquid outlet cap  120 , and there is the second sealing ring  132  forming the seal therebetween. As shown in  FIG. 1 , in the embodiment, an external thread around the upper bottle cap  110 , and an internal thread which engages with the external thread around the inner wall of the liquid outlet cap  120 . Through matching internal thread with external thread, the liquid outlet cap  120  is installed on the bottle cap  110 , the upper bottle cap  110  is partially contained in the liquid outlet cap  120 . 
     A first opening  111  is provided on the top part of the bottle cap  110 . After the bottle cap  110  engaging with bottle body  100 , the liquid in the bottle body  100  can flow from the bottle body  100  to the first opening  111 . In the embodiment, the liquid contained in the bottle body  100  is glue. 
     A second opening  121  is provided on the top part of the liquid outlet cap  120 , and the second sealing ring  132  is placed on the first opening  111 . After the liquid outlet cap  120  engaging with the bottle cap  110  through thread, the second sealing ring  132  is fixed between the first opening  111  of the bottle cap  110  and the inner wall of the liquid outlet cap  120 , forming the seal between the liquid outlet  120  and the bottle cap  110 . In that way, the inner wall of the liquid outlet cap  120  and the outer wall of the bottle cap  110  form a cavity which has two opening which is first opening  111  and the second opening  121 . The diameter of the cross-section of the cavity lessens gradually from the first opening  111  to the second opening  121 , as can be realized by designing the inner wall of the liquid outlet cap  120 . 
     After the engagement among the liquid outlet cap  120 , the bottle cap  110  and the bottle body  100  is finished, the liquid in the bottle body  100  can flow from the bottle body  100  to the cavity through the first opening  111 , then flow out of the cavity through the second opening. 
     A shaft seal body  112  is arranged on the top part of the bottle cap  110  (the top part of the first opening in  FIG. 1 ), and the diameter of the seal body  112  is greater than that of the second opening  121 . After the matching between the liquid outlet  120  and the bottle cap  110 , the seal body  112  is positioned at the cavity, which is connected to the first opening  111  of the bottle cap  110  through three support shafts like support shaft  113 . In the embodiment, the seal body  112 , support shaft and bottle cap  110  are integrated, and they are made from the same material. 
     The hairbrush  122  is arranged on the top part of the liquid outlet cap  120  in the embodiment, and the hairbrush  122  surrounds the second opening  121 . 
     When the glue bottle with flow regulation of the invention used, the liquid outlet cap  120  would be twisted to make the liquid outlet cap  120  rotate relative to the bottle cap  110 . Thus the part of the bottle cap  110  that is positioned the liquid outlet cap  120 , which is the size of the cavity, is changed to adjust the position of the seal body  112  in the cavity, and to adjust the size of the gap between the seal body  112  and the inner wall of the liquid outlet cap  120 . For example, in the embodiment, when the liquid outlet cap  120  is screwed relative to the bottle cap  110  to the extreme position, the part of the bottle cap  110  is positioned within the liquid outlet cap  120  is maximum, and the cavity is minimum. The edge of the seal body  112  is against the inner wall of the liquid outlet cap  120  at the place of the second opening, the gap between the seal body  112  and the inner wall of the liquid outlet cap  120  is zero. After the bottle body  100  is squeezed, the liquid in the glue bottle  100  flows from the first opening  111  of the bottle body  100  to the cavity, but it is incapable of flowing from the second opening  121 . When the liquid outlet cap  120  is unscrewed relative to the bottle cap  110  for a part, such as being unscrewed for 0.5 mm, the part of the bottle cap  110  inside the liquid outlet cap  120  reduces by 0.5 mm along the axial direction of the glue bottle of the invention, and the cavity increases by 0.5 mm along that axial direction. The edge of the seal body  112  leaves the inner wall of the liquid outlet cap  120  at the second opening, the gap between the seal body  112  and the inner wall of the liquid outlet cap  120  is not zero. After the bottle body  100  is squeezed, the liquid in the bottle body  100  flows from the bottle body  100  to the cavity through the first opening  111 , and the liquid can flow from the second opening  121  to the hairbrush  122  to be used. When the liquid outlet cap  120  is unscrewed relative to the bottle cap  110  for a part again, such as being unscrewed for 0.5 mm more, the part of the bottle cap  110  inside of the liquid outlet cap  120  reduces by 0.5 mm more along the axial direction of the glue bottle of the invention, and the cavity increases by 0.5 mm more along that axial direction. The edge of the seal body  112  leaves the inner wall of the liquid outlet cap  120  at the second opening  121 , the gap between the seal body  112  and the inner wall of the liquid outlet cap  120  becomes larger. After the bottle body  100  is squeezed, more liquid in the bottle body  100  would flow from the bottle body  100  to the cavity through the first opening  111 , and the liquid can flow from the second opening  121  to the hairbrush  122  to be used. 
     A glue bottle with flow regulation which has a roller wheel is provided in the second embodiment of the invention. The structural exploded view of the glue bottle is shown in  FIG. 2 , and it includes a bottle body  200 , a bottle cap  210  and a liquid outlet cap  220 . 
     The bottle cap  210  and the bottle body  200  engages through thread, and a first sealing ring is provided therebetween to achieve seal therebetween. As shown in  FIG. 2 , in the embodiment, an external thread is provided around the bottleneck of the bottle body  200 , and an internal thread which engages with the external thread is provided in the inner wall of the bottle cap  210 . The bottle cap  210  is installed on the bottle body  200  with the internal thread engaging with the external thread. The first sealing ring  231  is installed on the bottleneck of the bottle body  200 . After the bottle cap  210  engages with bottle body  200  through thread, the first sealing ring  231  is fixed between the bottleneck of the bottle body  200  and the inner wall of the bottle cap  210 , forming the seal between the bottle cap  210  and the bottle body  100 . 
     The bottle cap  210  and the liquid outlet cap  220  are engaged through thread. The bottle cap  210  is partially contained in the liquid outlet cap  220 , and the second sealing ring  232  forming the seal is provided therebetween. As shown in  FIG. 2 , in the embodiment, an external thread is provided around the upper bottle cap  210 , and an internal thread which engages with the external thread is provided around the inner wall of the liquid outlet cap  220 . Through engaging internal thread with external thread, the liquid outlet cap  220  is installed on the bottle cap  210 , the upper part of the bottle cap  210  is partially contained in the liquid outlet cap  220 . 
     A first opening  211  is provided on the top part of the bottle cap  210 . After the bottle cap  210  engages with bottle body  200 , the liquid in the bottle body  200  can flow from the bottle body  200  to the first opening  211 . In the embodiment, the liquid contained in the bottle body  200  is glue. 
     A second opening  221  is provided on the top part of the liquid outlet cap  220 , and the second sealing ring  232  is arranged on the first opening  211 . After the liquid outlet cap  220  engages with the bottle cap  210  through thread, the second sealing ring  232  is fixed between the first opening  211  of the bottle cap  210  and the inner wall of the liquid outlet cap  220 , forming the seal between the liquid outlet  220  and the bottle cap  210 . In that way, a cavity is formed between the inner wall of the liquid outlet cap  220  and the outer wall of the bottle cap  210 , and the cavity has two opening which are a first opening  211  and a second opening  221 . The diameter of the cross-section of the cavity lessens gradually from the first opening  211  to the second opening  221 , as can be realized by designing the inner wall of the liquid outlet cap  220 . 
     After the engagement among the liquid outlet cap  220 , the bottle cap  210  and the bottle body  200  is finished, the liquid in the bottle body  200  can flow from the bottle body  200  to the cavity through the first opening  211 , then flow out of the cavity through the second opening. 
     A shaft seal body  212  on the top part of the bottle cap  210  (the top part of the first opening in  FIG. 2 ), and the diameter of the seal body  212  is greater than that of the second opening  221 . After the liquid outlet  220  and the bottle cap  210  are engaged, the seal body  212  is positioned at the cavity, which is connected to the first opening  211  of the bottle cap  210  through three support shafts such as support shaft  213 . In the embodiment, the seal body  212 , the support shaft and bottle cap  210  are integrated, and they are made from the same material. 
     In the embodiment, the roller wheel  222  is arranged on the top part of the liquid outlet cap  220 , and the edge of the roller wheel  222  is on the top part of the second opening  221 . The roller wheel  222  in the embodiment is arranged on the liquid outlet cap  200  via a bolt  224  which is fixed on the top part of the liquid outlet  220 . Moreover, two pressing plates, which are the left pressing plate  225  and the right pressing plate  226 , are clamped onto both sides of the roller wheel  222  to limit the movement of the roller wheel along the direction of the bolt  224 , which makes the roller wheel  222  only rotate around the bolt  224 . 
     When using the glue bottle with flow regulation of the invention, the liquid outlet cap  220  would be twisted to make the liquid outlet cap  220  rotate relative to the bottle cap  210 . Thus the part of the bottle cap  210  is positioned the liquid outlet cap  220 , which is the size of the cavity, is changed, to adjust the position of the seal body  212  in the cavity, and to adjust the size of the gap between the seal body  212  and the inner wall of the liquid outlet cap  220 . For example, in the embodiment, when the liquid outlet cap  220  is screwed relative to the bottle cap  210  to the extreme position, the part of the bottle cap  210  that is positioned the liquid outlet cap  220  is maximum, and the cavity is minimum. The edge of the seal body  212  is against the inner wall of the liquid outlet cap  220  at the place of the second opening, thus the gap between the seal body  212  and the inner wall of the liquid outlet cap  220  is zero. After the bottle body  200  is squeezed, the liquid in the glue bottle  200  flows from the first opening  211  of the bottle body  200  to the cavity, but it is incapable of flowing out of the second opening  221 . When the liquid outlet cap  220  is unscrewed relative to the bottle cap  210  for a part, such as being unscrewed for 0.5 mm, the part of the bottle cap  210  inside of the liquid outlet cap  220  reduces by 0.5 mm along the axial direction of the glue bottle of the invention, and the cavity increases by 0.5 mm along that axial direction. The edge of the seal body  212  leaves the inner wall of the liquid outlet cap  220  at the second opening, the gap between the seal body  212  and the inner wall of the liquid outlet cap  220  is not zero. After the bottle body  200  is squeezed, the liquid in the bottle body  200  flows from the bottle body  200  to the cavity through the first opening  211 , and the liquid could flow out of the second opening  221  to the roller wheel  222  to be used. When the liquid outlet cap  220  is unscrewed relative to the bottle cap  210  for a part again, such as being unscrewed for 0.5 mm more, the part of the bottle cap  210  inside of the liquid outlet cap  220  reduces by 0.5 mm more along the axial direction of the glue bottle of the invention, and the cavity increases by 0.5 mm more along that axial direction. The edge of the seal body  212  leaving the inner wall of the liquid outlet cap  220  at the second opening, the gap between the seal body  212  and the inner wall of the liquid outlet cap  220  becomes larger. After the bottle body  200  is squeezed, more liquid in the bottle body  200  would flow from the bottle body  200  to the cavity through the first opening  211 , and the liquid could flow out of the second opening  221  to the roller wheel  222  to be used. 
     The invention has been exemplified above with reference to specific embodiments. However, it should be understood that a multitude of modifications and varieties can be made by a common person skilled in the art based on the conception of the present invention. Therefore, any technical schemes, acquired by the person skilled in the art based on the conception of the present invention through logical analyses, deductions or limited experiments, fall within the scope of the invention as specified in the claims.