Liquid leakage prevention structure of pressing pump

Abstract

The utility model belongs to the technical field of pressing pumps, and particularly relates to a liquid leakage prevention structure of a pressing pump, which comprises a pump pipe, the top of the pump pipe is fixedly connected with a bottle mouth threaded cover, a piston is arranged in the pump pipe, and a suction pipe is inserted into the bottom end of the pump pipe. The piston and the pressing head are sealed through a first sealing gasket, the outer surface of the lower portion of the piston and the inner wall of the pump pipe are sealed through a third sealing gasket, and the piston and the pump pipe are further in inserted fit through a second sealing gasket and the third sealing gasket, so that sealing is further enhanced, and liquid leakage prevention of the pressing pump is avoided; quantitative liquid outlet of the pressing pump is achieved through the quantitative liquid outlet assembly, the problem caused by inconsistent liquid outlet dosage every time is avoided, liquid in the liquid outlet channel and the liquid outlet is prevented from flowing back into a container through the anti-backflow assembly, and therefore liquid pollution in the container is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to press pump technical field, concretely is a kind of leak-proof structure of press pump. BACKGROUND

[0002] Press pump is a kind of widely used liquid dispensing device, commonly found in daily necessities, medical equipment and industrial applications. Its background technology is mainly based on simple mechanical principle and fluid mechanics, and the liquid in container is squeezed out or sprayed out with accurate amount by pressing operation. The early press pump design is to meet the demand of accurate dose medicine dispensing in pharmaceutical industry, with the development of technology, this design gradually popularizes to various consumer product fields, such as cleaning agent, skin care product and personal care product etc. The core of press pump is its internal piston and spring mechanism, when user presses pump head, piston moves downward to compress air and liquid, force liquid to discharge through nozzle; after releasing pressure, spring pushes piston back to original position, forms negative pressure, and sucks new liquid from liquid storage container for next use. This mechanism not only ensures consistent dose for each use, but also effectively prevents external contaminants from entering container, prolongs product shelf life and hygiene.

[0003] The existing press pump often appears liquid leakage phenomenon after use, which not only wastes product, but also may cause inconvenience and pollution, in addition, the existing press pump is difficult to realize accurate quantitative liquid discharge, so that the dose is inconsistent for each use, and inconvenience and problems caused by inaccurate dose appear when using, in order to avoid liquid leakage and realize quantitative liquid discharge of press pump after pressing, we propose a kind of leak-proof structure of press pump. UTILITY MODEL CONTENTS

[0004] In view of the deficiency of prior art, the utility model provides a kind of leak-proof structure of press pump, bottle mouth screw cap and container are sealed by sealing washer four, piston and pressure head are sealed by sealing washer one, the outer surface of the lower part of piston and the inner wall of pump pipe are sealed by sealing washer three, and piston and pump pipe are further plugged in cooperation with sealing washer two and sealing washer three, further strengthen sealing, avoid the press pump leak-proof, realize the quantitative liquid discharge of the press pump by quantitative liquid discharge component, avoid the problem caused by inconsistent dose for each liquid discharge, avoid the liquid in liquid discharge channel and liquid outlet backflow to container by anti-backflow component, thereby avoid liquid pollution in container, solve the problem in the background.

[0005] In order to achieve the above object, the utility model discloses a kind of leakage-proof structure of press pump, including pump pipe, the top of the pump pipe is fixedly connected with bottle mouth screw cap, the inside of the pump pipe is provided with piston, the bottom end of the pump pipe is inserted with suction tube, the inside bottom side of the pump pipe is provided with lower sealing ball, the top side of the lower sealing ball is provided with limit cover, the bottom of the piston is provided with placing groove, spring one is provided between limit cover and placing groove, the inside of the piston is provided with liquid outlet passage, the inside top side of the liquid outlet passage is provided with upper sealing ball, the top end of the piston is sleeved with pressure head, the inside of the pressure head is provided with liquid outlet, the liquid outlet is communicated with liquid outlet passage, the inside bottom side of the liquid outlet passage is provided with anti-reflux component, the top side inner wall of the pump pipe is inserted with fixed sleeve with screw, the bottom side of the fixed sleeve is in contact with the lower side wall of piston, the top side of the fixed sleeve is also provided with quantitative liquid outlet component.

[0006] Preferably, the anti-reflux component includes a sealing block, the bottom inner wall of the liquid outlet passage is fixedly connected with a limiting frame, the top side of the sealing block is fixedly connected with a sliding rod, the sliding rod is slidably arranged in the limiting frame, a sealing groove is formed between the liquid outlet passage and the placing groove, the side surface of the sealing block abuts on the sealing groove, and a spring No. 2 is arranged between the top side of the sealing block and the bottom side of the limiting frame.

[0007] Preferably, the quantitative liquid outlet component includes a rotating plate No. 1, the top side of the fixed sleeve is fixedly connected with a rotating plate No. 2, the rotating plate No. 1 is rotatably installed on the top side of the rotating plate No. 2, the upper outer surface of the piston is fixedly connected with a limiting strip, the inner side surface of the rotating plate No. 1 is provided with a limiting groove, the limiting strip is slidably connected in the limiting groove, the lower side wall of the piston is provided with a sliding groove No. 1 on the left and right sides, the lower side wall of the piston is provided with a sliding groove No. 2 on the front and back sides, the inner wall of the pump pipe is fixedly connected with a stop block No. 1 on the left and right sides, the inner wall of the pump pipe is fixedly connected with a stop block No. 2 on the front and back sides, the stop block No. 1 is slidably connected in the sliding groove No. 1, and the stop block No. 2 is slidably connected in the sliding groove No. 2.

[0008] Preferably, the bottom side of the rotating plate No. 1 is fixedly connected with a plurality of semicircular balls, and the top side of the rotating plate No. 2 is provided with a plurality of semicircular grooves.

[0009] Preferably, the side wall top of the bottle mouth screw cap and the side surface of the rotating plate No. 2 are both provided with a positioning mark No. 1.

[0010] Preferably, the side wall front side and the right side of the rotating plate No. 1 are both provided with a positioning mark No. 2.

[0011] Preferably, the lower side surface of the piston is provided with a clamping groove, a sealing gasket No. 3 is clamped in the clamping groove, and the side surface of the sealing gasket No. 3 is slidably connected to the inner wall of the pump pipe.

[0012] Preferably, the bottom of the fixing sleeve is snapped with a second sealing gasket, and the top of the third sealing gasket is inserted into the second sealing gasket.

[0013] Preferably, a sealing gasket is provided between the top side of the piston and the interior of the pressure head.

[0014] Preferably, a sealing gasket is provided on the inner top side of the bottle cap.

[0015] This invention provides a leak-proof structure for a push-button pump. Compared with the prior art, it has the following advantages:

[0016] 1. The leak-proof structure of this press pump is achieved by sealing the threaded cap of the bottle neck with a sealing gasket four, sealing the piston and the pressure head with a sealing gasket one, sealing the lower outer surface of the piston with the inner wall of the pump tube with a sealing gasket three, and further strengthening the seal by inserting a sealing gasket two with a sealing gasket three, thus preventing the press pump from leaking.

[0017] 2. The anti-leakage structure of the press pump has a metering dispensing component on the top side of the fixed sleeve. The metering dispensing component enables the press pump to dispense a metered amount of liquid, avoiding problems caused by inconsistent dispensing dosage each time.

[0018] 3. The anti-leakage structure of this press pump has an anti-backflow component installed on the bottom side of the inside of the liquid outlet channel. The anti-backflow component prevents the liquid from flowing back into the container from the liquid outlet channel and the liquid outlet, thereby preventing the liquid in the container from being contaminated. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the main body of this utility model;

[0020] Figure 2 This is a schematic diagram of the front cross-sectional structure of the main body of this utility model;

[0021] Figure 3 This is a frontal cross-sectional view of the main body of the present invention with the straw removed.

[0022] Figure 4 This is a schematic diagram of the top structure of the quantitative liquid dispensing component of this utility model;

[0023] Figure 5 This is a schematic diagram of the external structure of the piston of this utility model;

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of the pump pipe of this utility model;

[0025] Figure 7 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0026] Fig. 1, pump pipe; 2, bottle mouth threaded cap; 3, pressure head; 4, suction pipe; 5, piston; 6, upper sealing ball; 7, lower sealing ball; 8, rotating plate one; 9, rotating plate two; 10, semicircular ball; 11, semicircular groove; 12, sealing gasket one; 13, fixed sleeve; 14, spring one; 15, limiting cover; 16, limiting groove; 17, positioning mark one; 18, positioning mark two; 19, limiting strip; 20, clamping groove; 21, sliding groove one; 22, sliding groove two; 23, stop block one; 24, stop block two; 25, sealing gasket two; 26, sealing gasket three; 27, limiting frame; 28, sliding rod; 29, sealing groove; 30, sealing block; 31, spring two; 32, liquid outlet; 33, liquid outlet channel; 34, placement groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-7 The present application provides a technical solution: a liquid leakage prevention structure of a pressing pump, comprising a pump pipe 1, a bottle mouth threaded cap 2 is fixedly connected to the top of the pump pipe 1, a piston 5 is arranged in the pump pipe 1, a suction pipe 4 is inserted into the bottom end of the pump pipe 1, a lower sealing ball 7 is arranged on the inner bottom side of the pump pipe 1, a limiting cover 15 is arranged on the top side of the lower sealing ball 7, a placement groove 34 is formed in the bottom of the piston 5, a spring one 14 is arranged between the limiting cover 15 and the placement groove 34, a liquid outlet channel 33 is formed in the piston 5, an upper sealing ball 6 is arranged on the inner top side of the liquid outlet channel 33, a pressure head 3 is sleeved on the top end of the piston 5, a liquid outlet 32 is formed in the pressure head 3, the liquid outlet 32 communicates with the liquid outlet channel 33, an anti-reflux assembly is arranged on the inner bottom side of the liquid outlet channel 33, a fixed sleeve 13 is threadedly inserted into the inner wall of the top side of the pump pipe 1, the bottom side of the fixed sleeve 13 abuts against the lower side wall of the piston 5, and a quantitative liquid outlet assembly is further arranged on the top side of the fixed sleeve 13.

[0029] The anti-leak structure of the pressing pump is used. The pump pipe 1 is fixedly connected to the bottle opening through the bottle opening threaded cap 2 fixedly connected to the top of the pump pipe 1, and the pump pipe 1 is fixedly installed to the container bottle opening. The air in the pump pipe 1 is compressed by manually pressing the pressure head 3, thereby driving the piston 5 to slide downward in the pump pipe 1. Then, the piston 5 slides upward in the pump pipe 1 under the action of the spring 14, until the lower side wall of the piston 5 abuts against the fixed sleeve 13 threaded and inserted into the inner wall of the top side of the pump pipe 1. During the upward sliding of the piston 5, a negative pressure is formed in the pump pipe 1, the liquid is sucked into the pump pipe 1 from the suction pipe 4, and the liquid pushes the lower sealing ball 7 into the inner upper side of the limiting cover 15, so that the liquid enters the pump pipe 1, and then enters the liquid outlet channel 33 in the piston 5. Then, the upper sealing ball 6 is lifted, so that the liquid enters the liquid outlet 32. When the negative pressure disappears, the upper sealing ball 6 and the lower sealing ball 7 return to the original position to seal. After the liquid is discharged, the anti-backflow assembly arranged on the inner bottom side of the liquid outlet channel 33 prevents the liquid in the liquid outlet channel 33 and the liquid outlet 32 from flowing back to the container, thereby preventing the liquid in the container from being contaminated. The pressing pump can also realize quantitative liquid discharge through the quantitative liquid discharge assembly.

[0030] The anti-backflow assembly comprises a sealing block 30, a limiting frame 27 fixedly connected to the bottom inner wall of the liquid outlet channel 33, a sliding rod 28 fixedly connected to the top side of the sealing block 30, the sliding rod 28 slidingly penetrating the limiting frame 27, a sealing groove 29 penetratingly arranged between the liquid outlet channel 33 and the placing groove 34, the side surface of the sealing block 30 abutting against the sealing groove 29, and a spring 31 arranged between the top side of the sealing block 30 and the bottom side of the limiting frame 27.

[0031] When the liquid flows into the sealing groove 29 from the bottom of the sealing groove 29, the sealing block 30 is lifted, thereby driving the sliding rod 28 to slide on the limiting frame 27, so that the liquid enters the liquid outlet channel 33. When the liquid in the liquid outlet channel 33 flows back to the sealing groove 29, the sealing block 30 re-seals the sealing groove 29 under the action of the spring 31.

[0032] The quantitative liquid discharge assembly comprises a rotating plate one 8, a rotating plate two 9 fixedly connected to the top side of the fixed sleeve 13, the rotating plate one 8 being rotatably installed on the top side of the rotating plate two 9, a limiting strip 19 fixedly connected to the upper outer surface of the piston 5, a limiting groove 16 formed in the inner side surface of the rotating plate one 8, the limiting strip 19 being slidingly connected to the limiting groove 16, a sliding groove one 21 formed in the left and right sides of the lower side wall of the piston 5, a sliding groove two 22 formed in the front and back sides of the lower side wall of the piston 5, a block one 23 fixedly connected to the inner wall of the pump pipe 1 on the left and right sides, and a block two 24 fixedly connected to the inner wall of the pump pipe 1 on the front and back sides.

[0033] The bottom side of the rotating plate one 8 is fixedly connected to a plurality of semicircle balls 10, and the top side of the rotating plate two 9 is provided with a plurality of semicircle grooves 11.

[0034] The side wall top of the bottle mouth screw cap 2 and the side of the rotating plate two 9 are provided with positioning marks one 17.

[0035] The front side and the right side of the side wall of the rotating plate one 8 are provided with positioning marks two 18.

[0036] When the quantitative liquid component is used, after the piston 5 slides downward to a certain position in the inside of the pump pipe 1, the stop block two 24 fixedly connected to the front and back sides of the inner wall of the pump pipe 1 abuts against the limit position of the front and back sides of the lower side wall of the piston 5, and the stop block one 23 is slidingly connected to the sliding groove one 21, so that the sliding distance of the piston 5 is constant each time, realizing the first kind of quantitative liquid output. If the quantitative capacity needs to be changed, when the fixed sleeve 13 is threadedly inserted into the top of the pump pipe 1, the positioning marks one 17 provided on the side wall top of the bottle mouth screw cap 2 and the side of the rotating plate two 9 are aligned to realize installation positioning, the rotating plate one 8 is rotated on the rotating plate two 9, the positioning marks two 18 of the side wall of the rotating plate one 8 are aligned with the positioning marks one 17, another set of positioning marks two 18 are aligned with the positioning marks one 17, the rotating plate one 8 is rotated by 90 degrees, the stop block one 23 fixedly connected to the left and right sides of the inner wall of the pump pipe 1 abuts against the sliding groove two 22, realizing the second kind of quantitative liquid output.

[0037] The lower side of the piston 5 is provided with a clamping groove 20, the clamping groove 20 is clamped with a sealing gasket three 26, the side of the sealing gasket three 26 is slidingly connected to the inner wall of the pump pipe 1, and the lower outer surface of the piston 5 and the inner wall of the pump pipe 1 are sealed by the sealing gasket three 26.

[0038] The bottom of the fixed sleeve 13 is clamped with a sealing gasket two 25, the top of the sealing gasket three 26 is inserted into the sealing gasket two 25, and the sealing gasket two 25 and the sealing gasket three 26 are further inserted and matched to seal the piston 5 and the pump pipe 1.

[0039] The top side of the piston 5 and the inside of the pressure head 3 are provided with a sealing gasket one 12 to seal the piston 5 and the pressure head 3.

[0040] The inside top side of the bottle mouth screw cap 2 is provided with a sealing gasket four to seal the bottle mouth screw cap 2 and the container.

[0041] Working principle: the anti-leak structure of the pressing pump is used, the bottle opening threaded cap 2 fixedly connected at the top of the pump pipe 1 is used to fix the pump pipe 1 to the container bottle opening, the bottle opening threaded cap 2 and the container are sealed by the sealing gasket four, the piston 5 and the pressure head 3 are sealed by the sealing gasket one 12, the lower outer surface of the piston 5 and the inner wall of the pump pipe 1 are sealed by the sealing gasket three 26, the piston 5 and the pump pipe 1 are further inserted and matched by the sealing gasket two 25 and the sealing gasket three 26, the sealing is further strengthened, the anti-leak of the pressing pump is avoided, the pressure head 3 is manually pressed, the air in the pump pipe 1 is compressed when the piston 5 slides downward in the pump pipe 1, then the piston 5 slides upward in the pump pipe 1 under the action of the spring one 14, until the lower side wall of the piston 5 abuts against the fixed sleeve 13 threadedly inserted at the top side inner wall of the pump pipe 1, a negative pressure is formed in the pump pipe 1 during the upward sliding of the piston 5, the liquid is sucked from the suction pipe 4, the liquid pushes the lower sealing ball 7 into the upper side inside of the limiting cover 15, so that the liquid enters the pump pipe 1, and then enters the liquid outlet channel 33 in the piston 5, then the upper sealing ball 6 is lifted, so that the liquid enters the liquid outlet 32, when the negative pressure disappears, the upper sealing ball 6 and the lower sealing ball 7 return to the original position for sealing, when the liquid flows from the bottom of the sealing groove 29, the sealing block 30 is lifted, so that the sliding rod 28 slides on the limiting frame 27, so that the liquid enters the liquid outlet channel 33, when the liquid in the liquid outlet channel 33 flows back to the sealing groove 29, the sealing groove 29 is resealed by the sealing block 30 under the push of the spring two 31, so that the liquid in the liquid outlet channel 33 and the liquid outlet 32 does not flow back to the container, so that the liquid in the container is not polluted;

[0042] When the piston 5 slides downward in the pump pipe 1 to a certain position, the stop block two 24 fixedly connected to the inner wall of the pump pipe 1 is abutted and limited by the slide groove two 22 arranged on the lower side wall of the piston 5, and the stop block one 23 is slidably connected to the slide groove one 21, so that the sliding distance of the piston 5 is constant, the first kind of quantitative liquid outlet is realized, if the quantitative capacity needs to be changed, since the fixed sleeve 13 is threadedly inserted at the top of the pump pipe 1, the side wall top of the bottle opening threaded cap 2 and the side surface of the rotating plate two 9 are aligned by the positioning mark one 17 arranged on the side wall and the side surface, the installation and positioning are realized, the rotating plate one 8 is rotated on the rotating plate two 9, so that the positioning mark two 18 on the side wall of the rotating plate one 8 is aligned with the positioning mark one 17, another set of positioning mark two 18 is aligned with the positioning mark one 17, the rotating plate one 8 is rotated by 90 degrees, since the limiting strip 19 of the piston 5 is slidably connected to the limiting groove 16 arranged on the inner side surface of the rotating plate one 8, the piston 5 is rotated by 90 degrees, the stop block one 23 fixedly connected to the inner wall of the pump pipe 1 is abutted on the slide groove two 22, the second kind of quantitative liquid outlet is realized.

[0043] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0044] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A liquid leakage preventing structure of a press pump comprising a pump tube (1), characterized by: The top of the pump pipe (1) is fixedly connected with a bottle mouth threaded cover (2), the inside of the pump pipe (1) is provided with a piston (5), the bottom end of the pump pipe (1) is inserted with a suction pipe (4), the inside bottom side of the pump pipe (1) is provided with a lower sealing ball (7), the top side of the lower sealing ball (7) is provided with a limiting cover (15), the bottom of the piston (5) is provided with a placing groove (34), the limiting cover (15) and the placing groove (34) are provided with a spring one (14), the inside of the piston (5) is provided with a liquid outlet channel (33), the inside top side of the liquid outlet channel (33) is provided with an upper sealing ball (6), the top end of the piston (5) is sleeved with a pressure head (3), the inside of the pressure head (3) is provided with a liquid outlet (32), the liquid outlet (32) is communicated with the liquid outlet channel (33), the inside bottom side of the liquid outlet channel (33) is provided with an anti-reflux assembly, the top side inner wall of the pump pipe (1) is threadedly inserted with a fixed sleeve (13), the bottom side of the fixed sleeve (13) is abutted with the lower side wall of the piston (5), and the top side of the fixed sleeve (13) is further provided with a quantitative liquid outlet assembly.

2. The liquid leakage preventing structure of a press pump according to claim 1, characterized in that: The anti-reflux assembly comprises a sealing block (30), the bottom side inner wall of the liquid outlet channel (33) is fixedly connected with a limiting frame (27), the top side of the sealing block (30) is fixedly connected with a sliding rod (28), the sliding rod (28) is slidably arranged on the limiting frame (27), the liquid outlet channel (33) and the placing groove (34) are provided with a sealing groove (29), the side of the sealing block (30) is abutted on the sealing groove (29), and the top side of the sealing block (30) and the bottom side of the limiting frame (27) are provided with a spring two (31).

3. The liquid leakage preventing structure of a press pump according to claim 1, characterized in that: The quantitative liquid outlet assembly comprises a rotating plate one (8), the top side of the fixed sleeve (13) is fixedly connected with a rotating plate two (9), the rotating plate one (8) is rotatably arranged on the top side of the rotating plate two (9), the upper outer surface of the piston (5) is fixedly connected with a limiting strip (19), the inner side of the rotating plate one (8) is provided with a limiting groove (16), the limiting strip (19) is slidably connected in the limiting groove (16), the lower side wall of the piston (5) is provided with a sliding groove one (21) on the left and right sides, the lower side wall of the piston (5) is provided with a sliding groove two (22) on the front and back sides, the inner wall of the pump pipe (1) is fixedly connected with a stop block one (23) on the left and right sides, the inner wall of the pump pipe (1) is fixedly connected with a stop block two (24) on the front and back sides, the stop block one (23) is slidably connected in the sliding groove one (21), and the stop block two (24) is slidably connected in the sliding groove two (22).

4. The liquid leakage preventing structure of a press pump according to claim 3, characterized in that: The bottom side of the rotating plate one (8) is fixedly connected with a plurality of semicircle balls (10), and the top side of the rotating plate two (9) is provided with a plurality of semicircle grooves (11).

5. The liquid leakage preventing structure of a press pump according to claim 3, characterized in that: The side wall top of the bottle mouth threaded cover (2) and the side of the rotating plate two (9) are provided with a positioning mark one (17).

6. The liquid leakage preventing structure of a press pump according to claim 3, characterized in that: The side wall front side and the right side of the rotating plate one (8) are provided with a positioning mark two (18).

7. The liquid leakage preventing structure of a press pump according to claim 1, characterized by: The lower side of the piston (5) is provided with a clamping groove (20), and a sealing gasket three (26) is clamped on the clamping groove (20), and the side of the sealing gasket three (26) is slidably connected to the inner wall of the pump pipe (1).

8. The liquid leakage preventing structure of a press pump according to claim 7, characterized by: The bottom of the fixing sleeve (13) is clamped with a sealing gasket two (25), and the top of the sealing gasket three (26) is inserted into the sealing gasket two (25).

9. The liquid leakage preventing structure of a press pump according to claim 1, characterized by: The top side of the piston (5) is provided with a sealing gasket one (12) between the inside of the pressure head (3).

10. The liquid leakage preventing structure of a press pump according to claim 1, characterized by: The inside top side of the bottle mouth threaded cover (2) is provided with a sealing gasket four.

Images