Please select the most similar patent number from A, B, C and D. Which number is?
Provided in the present invention is an apparatus for automatically acquiring coconut water, the apparatus comprising a water acquiring needle, and a fixing and pressing apparatus, wherein the water acquiring needle is fixed on the fixing and pressing apparatus; the fixing and pressing apparatus is used for fixing a coconut and pressing the coconut to the needle tip of the water acquiring needle, such that the water acquiring needle is inserted into the inner cavity of the coconut to acquire the water therefrom; and the end of the water acquiring needle away from the needle tip is in communication with a pressure supplementing pipe and a water storage apparatus. The water acquiring needle comprises an inner pipe, an outer pipe and a needle head, wherein the needle head is detachably connected to an input end of the outer pipe; the inner pipe is arranged inside the outer pipe; a flow guide cavity is arranged between the inner pipe and the outer pipe; the input end of the outer pipe is provided with a plurality of water intake holes; an output end of the outer pipe is in communication with a water output pipe; an input end of the inner pipe is in communication with the pressure supplementing pipe; the pressure supplementing pipe is connected to an electric-control air valve; and an output end of the inner pipe is provided with a plurality of air output holes. In the present invention, the acquiring and storing of coconut water are both performed in a closed system, preventing the coconut water from being in contact with air, such that the original worth of the coconut water is guaranteed to the maximum extent; and automated production replaces manual operation, such that safety is improved, the productivity is increased, and the labor load is reduced.
A: A combined coconut peeling and polishing integrated machine, comprising a first peeling device (1), a second peeling device (2), a polishing device (3), a conveying device (4), and a support (5). The first peeling device (1) is fixed above the second peeling device (2), and an output end of the first peeling device (1) is connected to an input end of the second peeling device (2). The second peeling device (2), the conveying device (4), and the polishing device (3) are all fixed to the support (5). A coconut peeled and outputted by the second peeling device (2) is conveyed to the polishing device (3) via the conveying device (4) for polishing.
B: Disclosed in the present invention is a multiphase flow rotating jet-based mixing apparatus for strengthening grinding machining, comprising a mixing pipe, a rotating jet outer pipe, a rotating inner pipe, and a mixing feeding cover. Both ends of the rotating jet outer pipe are fixedly connected to the mixing pipe and the mixing feeding cover, respectively; the rotating inner pipe is provided in an inner cavity of the rotating jet outer pipe by means of a rotatable structure; a spiral guide groove is formed in an inner cavity wall of the rotating jet outer pipe; the mixing feeding cover is provided with two feeding inlets, and one end of each of the two feeding inlets is separately communicated with the spiral guide groove of the rotating jet outer pipe and an inner cavity of the rotating inner pipe; the mixing pipe is configured to be of a Venturi pipe structure, and a negative pressure section of the mixing pipe is communicated with the feeding pipe; the inner cavity of the rotating inner pipe is provided with a fixedly provided negative pressure screw rod. The multiphase flow rotating jet-based mixing apparatus can uniformly mix multiphase abrasives, thereby improving the effect of strengthening grinding machining.
C: A balloon catheter, comprising: a tubular element and a balloon. The tubular element comprises an inner tube and an outer tube, and the balloon is fixed to the tubular element. The balloon is provided with an expanded state and a contracted state. The outer tube is sleeved outside the inner tube, and a first cavity is formed between the outer tube and the inner tube. The outer tube comprises a main outer tube body and a first recess, the first recess being located at a distal end of the main outer tube body, the outer diameter of the first recess being smaller than the outer diameter of the main outer tube body, the inner diameter of the first recess being smaller than the inner diameter of the main outer tube body, and the proximal end of the balloon being fixedly connected to the first recess. The inner tube comprises a main inner tube body and a second recess, the second recess being located at the distal end of the inner tube body, and the outer diameter of the second recess being smaller than the outer diameter of the main inner tube body. The balloon catheter so configured features good compatibility, a small pushing force during delivery, and low irritation to blood vessel walls.
D: Disclosed is an electronic atomization device, comprising an outer tube, an inner tube, a mouthpiece assembly and an electrode assembly, wherein the inner tube is coaxially arranged inside the outer tube; the upper ends of the inner tube and the outer tube are simultaneously connected to the mouthpiece assembly, and the lower ends of the inner tube and the outer tube are simultaneously connected to the electrode assembly; the electrode assembly is provided with an electrode and is connected to a power supply device; the mouthpiece assembly comprises a mouthpiece, a clamp spring sheet, a connecting member and a sealing sleeve; through holes are provided in the centers of both the mouthpiece and the connecting member; an outer wall of the upper end of the connecting member is tightly connected to an inner wall of the lower end of the mouthpiece in a sleeving manner; a clamping hole is provided in the center of the clamp spring sheet; the clamp spring sheet is arranged between the mouthpiece and the connecting member; the sealing sleeve is wrapped around an outer wall and inner wall of the lower end of the connecting member; when the mouthpiece assembly is connected to the outer tube and the inner tube, an outer wall of the sealing sleeve is connected to an inner wall of the upper end of the outer tube in a sleeving manner; the upper end of the inner tube passes through the clamping hole in the clamp spring sheet; the clamp spring sheet is clamped in a groove provided in an outer wall of the upper end of the inner tube; and the outer wall of the upper end of the inner tube is connected to inner walls of the connecting member and the sealing sleeve in a sleeved manner. The beneficial effect of the electronic atomization device lies in that the mouthpiece assembly is easy to install and cannot be split after being installed.
Answer: A