A pressurized liquid pump which dispenses one drop of liquid at a time

Abstract

The application discloses a press liquid storage pump which can discharge one drop of liquid each time, relates to the technical field of liquid storage pumps, and comprises a bottle body, a large-circle assembly is threadedly connected to the top opening of the bottle body, a pump body assembly is fixedly inserted at the top of the large-circle assembly, an elastic sheet assembly is movably arranged at the lower end of the pump body assembly, a lock cover assembly is threadedly connected to the inside of the pump body assembly, and the lock cover assembly is located at the top of the elastic sheet assembly. Through the arrangement of the second ball valve and the first ball valve, double liquid discharge sealing is formed. When the solution enters the inside of the pump body assembly, the first ball valve jumps when being pressed again, liquid discharge is performed, the stroke distance of the upper cover assembly, the lower cover assembly and the piston rod assembly is fixed and short each time, the liquid discharge amount after each pressing can be well controlled, the liquid discharge amount is only one drop each time, use is facilitated, and waste caused by excessive liquid discharge is prevented.

Description

Technical Field

[0001] This invention relates to the field of liquid storage pump technology, and in particular to a press-type liquid storage pump that dispenses one drop of liquid at a time. Background Technology

[0002] Currently, most liquid dispensing pumps for daily chemical products on the market dispense liquid by pressing vertically from the top. Dispensing is achieved by pressing down on the pump head, which can easily lead to residue buildup and liquid waste under positive pressure. This invention, by dispensing liquid in an inverted manner, effectively controls the shape and residue of the dispensed liquid. It features a short stroke and precise control of the dispensing volume, making it suitable for high-end liquids and portable for convenient use anytime. However, existing liquid pumps cannot control the amount of liquid dispensed with each press, easily resulting in too much or too little liquid, affecting the actual performance.

[0003] Therefore, it is necessary to invent a press-type liquid storage pump that dispenses one drop of liquid at a time to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a press-operated liquid storage pump that dispenses one drop of liquid at a time, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a press-type liquid storage pump that dispenses one drop of liquid at a time, comprising a bottle body, a large ring assembly threadedly connected to the top opening of the bottle body, a pump body assembly fixedly inserted into the top of the large ring assembly, a spring assembly movably disposed at the lower end of the pump body assembly, a locking cap assembly threadedly connected to the inside of the pump body assembly and located at the top of the spring assembly, a piston rod assembly movably inserted between the spring assembly and the locking cap assembly, a lower cap assembly movably sleeved on the pump body assembly, the large ring assembly located inside the lower cap assembly, a large spring movably disposed at the top of the locking cap assembly, the top of the large spring fitting against the inner wall of the top of the lower cap assembly, and an upper cap assembly snapped onto the top of the lower cap assembly;

[0006] The large ring assembly includes a large ring body. The top center of the large ring body is integrally formed with a liquid outlet channel, which is connected to the interior of the large ring body. One side of the top of the large ring body is integrally formed with an air outlet channel, and a first air outlet hole is opened through the bottom side of the air outlet channel. A second bead valve is movably arranged at the lower end of the interior of the liquid outlet channel, and a matching second small spring is arranged at the top of the second bead valve.

[0007] The pump assembly includes a pump body. A liquid outlet cylinder adapted to the liquid outlet channel is integrally formed at the bottom center of the pump body. The liquid outlet channel is inserted into the liquid outlet cylinder and is sealed and snapped together with the liquid outlet cylinder. An air outlet cylinder adapted to the air outlet channel is integrally formed on one side of the bottom of the pump body. The air outlet channel is inserted into the air outlet cylinder and is sealed and fitted together with the air outlet cylinder. A second air outlet hole is provided on one side of the bottom of the air outlet cylinder.

[0008] The spring assembly includes a metal sheet, and a through hole is provided in the middle of the sheet;

[0009] The piston rod assembly includes a rod body, a limit ring integrally formed and sleeved at the bottom end of the rod body, a limit protrusion integrally formed at the bottom end of the rod body, and the limit protrusion is adapted to the through hole. A first ball valve is movably arranged inside the upper end of the rod body, and a matching first small spring is arranged at the top end of the first ball valve.

[0010] The lock cover assembly includes a lock cover body. A limiting block is integrally formed around the bottom end of the lock cover body. An exhaust hole is opened through one side of the limiting block and is connected to a second air outlet. A limiting platform is integrally formed inside the lower end of the lock cover body, and the bottom end of the limiting platform is fitted and connected to the top end of the limiting ring.

[0011] The lower cover assembly includes a lower cover body. A boss is integrally formed on the upper part of the lower cover body. A liquid outlet is integrally formed in the middle of the boss. The top end of the rod is fixedly inserted into the lower end of the liquid outlet. A sealing plug is movably inserted into the top end of the liquid outlet.

[0012] The upper cover assembly includes an upper cover body, with a circular hole extending through the middle of the upper cover body, and the top of the liquid outlet located inside the circular hole.

[0013] Preferably, a gasket is provided at the top opening of the bottle body, and the gasket is fitted and connected to the inner wall of the top of the large ring body.

[0014] Preferably, the outer wall of the large ring body is integrally formed with a plurality of first vertical ribs, and the plurality of first vertical ribs are distributed in a ring array.

[0015] Preferably, the top of the inner sidewall of the pump body is provided with multiple limiting grooves, and the multiple limiting grooves are distributed in a ring array.

[0016] Preferably, the bottom opening edge of the through hole is integrally formed with a limiting edge, and the limiting edge is fitted and connected to the outer wall of the limiting protrusion ring.

[0017] Preferably, the top of the lock cover body is integrally formed with a plurality of buckle blocks arranged in a ring array, and the top of the outer side wall of the lock cover body is integrally formed with a limiting block corresponding to a plurality of limiting grooves, and the limiting block is adapted to the limiting groove.

[0018] Preferably, the top edge of the boss is provided with a slot corresponding to a plurality of buckles, and the inner sidewall of the lower cover body is integrally formed with a plurality of second vertical ribs arranged in a ring array, and the plurality of second vertical ribs are adapted to and alternately distributed with a plurality of first vertical ribs.

[0019] Preferably, the inner edge of the top of the cover body is integrally formed with a locking block that corresponds to one of the multiple fasteners. The locking block moves through one of the slots and is engaged with one of the fasteners.

[0020] The technical effects and advantages of this invention are as follows:

[0021] This invention forms a double liquid outlet seal by setting up a second bead valve and a first bead valve. After the solution enters the pump assembly, when it is pressed again, the first bead valve jumps to release the liquid. At the same time, the stroke distance of the lower cover assembly and piston rod assembly is fixed and short each time it is pressed, so that the amount of liquid released after each press can be well controlled, so that the amount of liquid released each time is only one drop, which is convenient to use and prevents excessive liquid from being wasted. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention.

[0024] Figure 3 This is a schematic diagram of the overall exploded three-dimensional structure of the present invention.

[0025] Figure 4 This is a schematic diagram of the large ring assembly structure of the present invention.

[0026] Figure 5 This is a schematic diagram of the pump assembly structure of the present invention.

[0027] Figure 6 This is a schematic diagram of the spring assembly structure of the present invention.

[0028] Figure 7 This is a schematic diagram of the piston rod assembly structure of the present invention.

[0029] Figure 8 This is a schematic diagram of the locking cover assembly structure of the present invention.

[0030] Figure 9 This is a schematic diagram of the lower cover assembly structure of the present invention.

[0031] Figure 10 This is a schematic diagram of the upper cover assembly structure of the present invention.

[0032] In the diagram: 1. Bottle body; 2. Large ring assembly; 3. Pump body assembly; 4. Spring assembly; 5. Piston rod assembly; 6. Locking cap assembly; 7. Lower cap assembly; 8. Upper cap assembly; 9. Large spring; 10. First small spring; 11. First ball valve; 12. Second small spring; 13. Second ball valve; 14. Sealing plug; 15. Gasket; 201. Large ring body; 202. Liquid outlet channel; 203. Gas outlet channel; 204. First gas outlet; 205. First vertical rib; 301. Pump body body; 302. Liquid outlet cylinder; 3 03. Air outlet; 304. Limiting groove; 305. Second air outlet; 401. Metal sheet; 402. Through hole; 403. Limiting edge; 501. Rod body; 502. Limiting ring; 503. Limiting protrusion ring; 601. Locking cover body; 602. Buckle block; 603. Limiting block; 604. Exhaust hole; 605. Limiting platform; 701. Lower cover body; 702. Boss; 703. Liquid outlet; 704. Second vertical rib; 705. Slot; 801. Upper cover body; 802. Round hole; 803. Locking block. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] This invention provides, for example Figure 1-10 The pump shown is a press-type liquid storage pump that dispenses one drop of liquid at a time. It includes a bottle body 1. A large ring assembly 2 is threadedly connected to the top opening of the bottle body 1. A pump body assembly 3 is fixedly inserted into the top of the large ring assembly 2. A spring assembly 4 is movably installed at the lower end of the pump body assembly 3. A locking cap assembly 6 is threadedly connected to the inside of the pump body assembly 3 and is located on top of the spring assembly 4. A piston rod assembly 5 is movably inserted between the spring assembly 4 and the locking cap assembly 6. A lower cover assembly 7 is movably sleeved on the pump body assembly 3, and the large ring assembly 2 is located inside the lower cover assembly 7. A large spring 9 is movably installed at the top of the locking cap assembly 6, and the top of the large spring 9 is attached to the inner wall of the top of the lower cover assembly 7. An upper cover assembly 8 is snapped onto the top of the lower cover assembly 7.

[0035] Furthermore, the large ring assembly 2 includes a large ring body 201. A liquid outlet channel 202 is integrally formed at the top center of the large ring body 201 and is connected to the interior of the large ring body 201. The bottom end of the inner sidewall of the liquid outlet channel 202 is shaped like an inverted frustum, which allows the second ball valve 13 to be located inside. The second ball valve 13 is sealed to the inner sidewall at the bottom of the liquid outlet channel 202. An air outlet channel 203 is integrally formed on one side of the top of the large ring body 201, and a first air outlet hole 204 is opened through the bottom side of the air outlet channel 203. The second ball valve 13 is movably arranged at the lower end of the interior of the liquid outlet channel 202, and a matching second small spring 12 is provided at the top of the second ball valve 13. A plurality of first vertical ribs 205 are integrally formed on the outer sidewall of the large ring body 201 and are arranged in a ring array.

[0036] The pump body assembly 3 includes a pump body 301. A liquid outlet cylinder 302 adapted to the liquid outlet channel 202 is integrally formed at the bottom center of the pump body 301. The liquid outlet channel 202 is inserted into the liquid outlet cylinder 302 and is sealed and snapped together with the liquid outlet cylinder 302. An air outlet cylinder 303 adapted to the air outlet channel 203 is integrally formed on one side of the bottom of the pump body 301. The air outlet channel 203 is inserted into the air outlet cylinder 303 and is sealed and fitted together with the air outlet cylinder 303. A second air outlet hole 305 is provided on one side of the bottom of the air outlet cylinder 303. Multiple limiting grooves 304 are provided on the top of the inner side wall of the pump body 301, and the multiple limiting grooves 304 are distributed in a ring array.

[0037] The spring assembly 4 includes a metal sheet 401, a through hole 402 is provided through the middle of the 401, and a limiting edge 403 is integrally formed around the bottom opening edge of the through hole 402, and the limiting edge 403 is fitted and connected to the outer wall of the limiting protrusion ring 503.

[0038] The piston rod assembly 5 includes a rod body 501. The top diameter of the inner sidewall of the rod body 501 is larger than the bottom diameter, and the connection is shaped like an inverted frustum, allowing the first ball valve 11 to be located inside. The first ball valve 11 seals against the inner sidewall of the connection. A limit ring 502 is integrally formed and sleeved at the bottom end of the rod body 501. A limit protrusion ring 503 is integrally formed at the bottom end of the rod body 501, and the limit protrusion ring 503 is adapted to the through hole 402. The first ball valve 11 is movably disposed at the upper end of the inner sidewall of the rod body 501. The top of the ball valve 11 is equipped with a matching first small spring 10. The combination of the second ball valve 13 and the first ball valve 11 forms a double liquid outlet seal. After the solution enters the pump body assembly 3, when the pump is pressed again, the first ball valve 11 jumps to discharge the solution. At the same time, the stroke distance of the lower cover assembly 7 and the piston rod assembly 5 is fixed and short each time the pump is pressed, so that the amount of liquid discharged after each press can be well controlled, ensuring that the amount of liquid discharged each time is only one drop. This makes the pump convenient to use and prevents excessive liquid discharge from causing waste.

[0039] The lock cover assembly 6 includes a lock cover body 601. A limiting block 603 is integrally formed around the bottom end of the lock cover body 601. An exhaust hole 604 is opened through one side of the limiting block 603 and is connected to the second vent hole 305. A limiting platform 605 is integrally formed inside the lower end of the lock cover body 601 and the bottom end of the limiting platform 605 is fitted and connected to the top end of the limiting ring 502. A plurality of buckle blocks 602 distributed in a ring array are integrally formed on the top end of the lock cover body 601. A limiting block 603 corresponding to a plurality of limiting grooves 304 is integrally formed on the top end of the outer side wall of the lock cover body 601 and the limiting block 603 is adapted to the limiting groove 304.

[0040] The lower cover assembly 7 includes a lower cover body 701. The upper part of the lower cover body 701 is integrally formed with a boss 702. The middle part of the boss 702 is integrally formed with a liquid outlet 703. The top end of the rod 501 is fixedly inserted into the lower end of the liquid outlet 703. The top end of the liquid outlet 703 is shaped like a frustum to facilitate liquid discharge. A sealing plug 14 is movably inserted into the top end of the liquid outlet 703. The top edge of the boss 702 is provided with a slot 705 that corresponds to a plurality of fasteners 602. The inner side wall of the lower cover body 701 is integrally formed with a plurality of second vertical ribs 704 arranged in a ring array. The plurality of second vertical ribs 704 are adapted to and alternately distributed with a plurality of first vertical ribs 205.

[0041] The top cover assembly 8 includes a top cover body 801. A circular hole 802 is provided through the middle of the top cover body 801, and the top of the liquid outlet 703 is located inside the circular hole 802. The inner edge of the top of the top of the top cover body 801 is integrally formed with a locking block 803 corresponding to a plurality of locking blocks 602. The locking block 803 moves through one of the locking slots 705 and is locked with one of the locking blocks 602.

[0042] Secondly, a gasket 15 is provided at the top opening of the bottle body 1, and the gasket 15 is fitted and connected to the inner wall of the top of the large ring body 201.

[0043] Working principle of this invention:

[0044] In use, invert the storage bottle, clamp the middle of the lower cap assembly 7 with your middle and index fingers, and press the bottom of the bottle body 1 with your thumb. When pressing, the piston rod assembly 5 moves with the lower cap assembly 7 towards the bottle body 1, squeezing the air inside the pump body assembly 3. The first bead valve 11 jumps upward, allowing the air inside the pump body assembly 3 to be discharged through the piston rod assembly 5, creating a negative pressure inside the pump body assembly 3. The second bead valve 13 jumps due to the pressure, allowing the liquid inside the bottle body 1 to flow into the pump body assembly 3. After releasing the lower cap assembly 7, the spring assembly 4 and the large spring 9 return to their original deformation, and the lower cap assembly 7 returns to its initial position, creating a negative pressure inside the pump body assembly 3 again. The second bead valve 13 jumps, allowing the liquid inside the bottle body 1 to enter the pump body assembly 3 for replenishment, thus pumping out liquid. Because the stroke of the lower cap assembly 7 and piston rod assembly 5 is short when pressing, and liquid can only be discharged when the first bead valve 11 jumps, the amount of liquid discharged each time can be well controlled.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A press-type liquid storage pump that dispenses one drop of liquid at a time, characterized in that: The device includes a bottle body (1), a large ring assembly (2) is threadedly connected to the top opening of the bottle body (1), a pump body assembly (3) is fixedly inserted into the top of the large ring assembly (2), a spring piece assembly (4) is movably arranged at the lower end of the pump body assembly (3), a locking cap assembly (6) is threadedly connected to the inside of the pump body assembly (3), and the locking cap assembly (6) is located on top of the spring piece assembly (4). A piston rod assembly (5) is movably inserted between the spring piece assembly (4) and the locking cap assembly (6). A lower cap assembly (7) is movably sleeved on the pump body assembly (3), and the large ring assembly (2) is located inside the lower cap assembly (7). A large spring (9) is movably arranged at the top of the locking cap assembly (6), and the top of the large spring (9) is attached to the inner wall of the top of the lower cap assembly (7). An upper cap assembly (8) is snapped onto the top of the lower cap assembly (7). The large ring assembly (2) includes a large ring body (201). The top center of the large ring body (201) is integrally formed with a liquid outlet channel (202), and the liquid outlet channel (202) is connected to the interior of the large ring body (201). The top side of the large ring body (201) is integrally formed with an air outlet channel (203), and a first air outlet hole (204) is opened through the bottom side of the air outlet channel (203). The lower end of the interior of the liquid outlet channel (202) is movably provided with a second ball valve (13), and the top of the second ball valve (13) is provided with a matching second small spring (12). The pump assembly (3) includes a pump body (301). The bottom center of the pump body (301) is integrally formed with a liquid outlet cylinder (302) adapted to the liquid outlet channel (202). The liquid outlet channel (202) is inserted into the liquid outlet cylinder (302) and is sealed and snapped together with the liquid outlet cylinder (302). The bottom side of the pump body (301) is integrally formed with an air outlet cylinder (303) adapted to the air outlet channel (203). The air outlet channel (203) is inserted into the air outlet cylinder (303) and is sealed and fitted together with the air outlet cylinder (303). The bottom side of the air outlet cylinder (303) is provided with a second air outlet hole (305). The spring assembly (4) includes a metal sheet (401), and a through hole (402) is provided in the middle of the 401. The piston rod assembly (5) includes a rod body (501), a limiting ring (502) is integrally formed and sleeved at the bottom end of the rod body (501), a limiting protrusion ring (503) is integrally formed at the bottom end of the rod body (501), and the limiting protrusion ring (503) is adapted to the through hole (402). A first ball valve (11) is movably arranged at the upper end of the inside of the rod body (501), and a matching first small spring (10) is arranged at the top end of the first ball valve (11). The lock cover assembly (6) includes a lock cover body (601), a limiting block (603) is integrally formed around the bottom end of the lock cover body (601), an exhaust hole (604) is provided through one side of the limiting block (603), and the exhaust hole (604) is connected to the second air outlet (305). A limiting platform (605) is integrally formed inside the lower end of the lock cover body (601), and the bottom end of the limiting platform (605) is fitted and connected to the top end of the limiting ring (502). The lower cover assembly (7) includes a lower cover body (701). The upper part of the lower cover body (701) is integrally formed with a boss (702). The middle part of the boss (702) is integrally formed with a liquid outlet (703). The top end of the rod (501) is fixedly inserted into the lower end of the liquid outlet (703). The top end of the liquid outlet (703) is movably inserted with a sealing plug (14). The top cover assembly (8) includes a top cover body (801), a circular hole (802) is provided through the middle of the top cover body (801), and the top of the liquid outlet (703) is located inside the circular hole (802).

2. The press-type liquid storage pump that dispenses one drop of liquid at a time according to claim 1, characterized in that: A gasket (15) is provided at the top opening of the bottle body (1), and the gasket (15) is attached to the inner wall of the top of the large ring body (201).

3. A press-type liquid storage pump that dispenses one drop of liquid at a time according to claim 2, characterized in that: The outer wall of the large ring body (201) is integrally formed with a plurality of first vertical ribs (205), and the plurality of first vertical ribs (205) are distributed in a ring array.

4. A press-type liquid storage pump that dispenses one drop of liquid at a time according to claim 3, characterized in that: The pump body (301) has multiple limiting grooves (304) on the top of its inner sidewall, and the multiple limiting grooves (304) are arranged in a ring array.

5. A press-type liquid storage pump that dispenses one drop of liquid at a time according to claim 4, characterized in that: The bottom opening edge of the through hole (402) is integrally formed with a limiting edge (403), and the limiting edge (403) is fitted and connected to the outer wall of the limiting protrusion ring (503).

6. A press-type liquid storage pump that dispenses one drop of liquid at a time according to claim 5, characterized in that: The top of the lock cover body (601) is integrally formed with multiple buckle blocks (602) arranged in a ring array. The top of the outer side wall of the lock cover body (601) is integrally formed with a limiting block (603) corresponding to multiple limiting grooves (304), and the limiting block (603) is adapted to the limiting groove (304).

7. A press-type liquid storage pump that dispenses one drop of liquid at a time according to claim 6, characterized in that: The top edge of the boss (702) is provided with a slot (705) corresponding to a plurality of fasteners (602). The inner side wall of the lower cover body (701) is integrally formed with a plurality of second vertical ribs (704) arranged in a ring array, and the plurality of second vertical ribs (704) are adapted to and alternately distributed with a plurality of first vertical ribs (205).

8. A press-type liquid storage pump that dispenses one drop of liquid at a time according to claim 7, characterized in that: The top inner wall edge of the cover body (801) is integrally formed with a locking block (803) corresponding to a plurality of fasteners (602). The locking block (803) moves through one of the slots (705) and is fastened to one of the fasteners (602).

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