Please select the most similar patent number from A, B, C and D. Which number is?
An ink bottle for supplying ink to a printing device, the bottle comprising a bottle body (1) and a bottle cap, the cap comprising an ink filling nozzle (2) and a connecting portion (3). The ink filling nozzle (2) and the connecting portion (3) each are provided with a first sealing connecting end (4) and a second sealing connecting end (5), the ink filling nozzle (2) is in communication with the connecting portion (3) via the second sealing connecting end (5), and the connecting portion (3) is in threaded fit with a neck of the bottle body (1). The bottle cap of the ink bottle may be adapted to two sealing caps of different shapes and sizes, and has good universality.
A: An automobile tire glue-water bottle comprises a bottle body (1) for accommodating the glue-water and a glue-water hose (2) which is arranged inside the bottle body, wherein an opening on the glue outlet end of the bottle body is provided with a second bottle cap (8) and a first bottle cap (3) which completely wraps the second bottle cap, and the second bottle cap can slide inside the first bottle cap; the glue-water hose (2) is used for leading out the glue-water inside the bottle body through a glue-water bottle connecting pipe penetrating the second bottle cap; the end part of the glue-water hose is connected with a retaining valve, the retaining valve comprises a retaining valve body (51), a sealing end cap (53) and a retaining valve cap (52) which is arranged on the end part away from the glue-water hose of the retaining valve body, a through pipe is arranged inside the retaining valve body, a glue guiding groove (511) communicated with the through pipe is arranged on the end away from the retaining valve cap, and the sealing end cap is arranged inside the through pipe and moves along the axial direction of the bottle body inside the through pipe; and a gravity ring (7) wrapping the retaining valve is arranged outside the retaining valve. Through the design of the gravity ring, the tire glue-water bottle enables full utilization of the glue water inside the bottle body, simple structure, and convenience in use.
B: A hydrogen-rich water generation bottle cap mounted on a mineral water bottle. A drinking water spout (1) is formed at the top of the bottle cap. An internal thread (6) connected to the opening of the mineral water bottle is formed on the inner wall of the bottle cap. A hydrogen-rich water generation unit comprising a separator (2), a hydrogen generation box (3), and a rotary seal switch (5) is provided between the internal thread (6) and the top of the bottle cap. The separator (2) is circular, and the edge of the separator (2) is fixed to the inner wall of the bottle cap. A buffer space is formed between the separator (2) and the drinking water spout (1). A water through hole is formed on the separator (2). The cylindrical hydrogen generation box (3) with an opening end is provided on the side of the separator (2) facing the spout of the bottle cap. The opening end of the hydrogen generation box (3) is inserted into a mounting hole on the separator (2) by means of an elastic fastener. A hydrogen rich water stick (7) is provided in the hydrogen generation box (3). Meshed holes are formed on the side surface and the bottom surface of the hydrogen generation box (3) respectively. The diameter of the hydrogen generation box (3) is smaller than the inner diameter of the bottle cap. The rotary seal switch (5) comprising a fixing ring rack (501), a fixed plate (502), and a movable plate (503) is provided below the hydrogen generation box (3). The hydrogen-rich water generation bottle cap is able to generate hydrogen-rich water by means of contact between the hydrogen rich water stick and water. A bottle cap provided with a hydrogen rich water stick is used in replacement of a conventional bottle cap to generate hydrogen-rich water in the mineral water bottle, improving the portability and the versatility of the hydrogen-rich water generation device.
C: A gas cylinder, comprising a cylinder body (1) filled with compressed carbon dioxide and a connecting member (2); the connecting member (2) has two open ends, a first open end (21) of the connecting member (2) is fixedly connected to the opening of the cylinder body (1), and a second open end (22) of the connecting member (2) is connected to a sealing cover (3) in a sealed manner, and a channel (23) in communication with the first opening end (21) and the second opening end (22) is provided inside the connecting member (2); the channel (23) is in communication with the inner cavity of the cylinder body (1); the outer side wall of the connecting member (2) is provided with an external thread (4); and the height H of the gas cylinder is 3 cm to 20 cm. The structure of the gas cylinder is very simple in design, small in volume and light in weight, allows easy and direct installation and use of the gas cylinder, and has good air tightness, being capable of effectively reduce the consumption of high pressure gas, reducing costs.
D: The present invention provides an ink filling device for an ink cartridge (1), the ink filling device comprising a base (2), an upper casing (3) connected to the base (2) and an ink filling container (4) for containing ink. The upper housing (3) has an ink cartridge receiving cavity (38) for placing the ink cartridge (1). An ink filling interface (34) to be joined to an ink outlet (41) of the ink filling container (4) and an ink filling needle (33) to be inserted into an ink filling hole (11) on the ink cartridge (1) are further disposed on a top wall (31) of the upper casing (3). The ink filling container (4) is a negative-pressure ink filling container capable of extracting air from the ink cartridge in advance.
Answer: D