A resilient one-way valve and a retrievable pistol pump incorporating the resilient one-way valve

Abstract

This invention discloses a resilient one-way valve, comprising a fixed part and a sealing part, and an elastic part connecting the fixed part and the sealing part. The fixed part, sealing part, and elastic part are integrally made of plastic material. This invention also discloses a recyclable pistol pump with the aforementioned resilient one-way valve. The resilient one-way valve is disposed within a valve cavity, and its expansion and contraction within the valve cavity controls the opening and closing of the valve cavity and the liquid injection channel. The resilient one-way valve of this invention has a simple structure, low cost, convenient assembly, and good elasticity. The pistol pump of this invention features fewer parts, lighter weight, a simple and compact structure, convenient assembly, and low cost.

Description

[Technical Field]

[0001] This invention relates to a resilient one-way valve and a retrievable pistol pump incorporating the resilient one-way valve. [Background Technology]

[0002] A pistol pump is a spray pump fixed to a container. When in use, pulling the trigger draws liquid from the bottle into the pump body within a predetermined number of times and sprays it out in a predetermined pattern. Due to its exquisite design and ease of use, it has been widely used in industries such as pharmaceuticals, pharmaceuticals, and manufacturing.

[0003] There are many materials used to manufacture the components of existing pistol pumps, such as plastics, metals, and glass. Disassembly is required for recycling, which is not conducive to recycling. Although some all-plastic pistol pumps on the market have eliminated metal and glass parts, their plastic parts are made of various materials, such as POM, PP, PE, and POE. Because they contain plastic materials with different properties, recycling them without disassembly will greatly reduce the performance and scope of the recycled materials. Therefore, it is necessary to further optimize and improve the utilization rate of recycled materials.

[0004] Moreover, the existing pistol pumps have an undesirable one-way valve design for controlling the opening and closing of the valve chamber and the injection channel. The design is complex, costly, and inconvenient to assemble. [Summary of the Invention]

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a resilient check valve that is simple in structure, low in cost, easy to assemble, and has good elasticity.

[0006] Another objective of this invention is to overcome the shortcomings of the prior art and provide a recyclable pistol pump in which all components are made of PE or PP materials, without the need for any toughening agents or auxiliary materials, meets European high-efficiency recycling standards, has fewer parts, is lightweight, has a simple and compact structure, is easy to assemble, and is low in cost.

[0007] The objective of this invention is achieved as follows:

[0008] A resilient one-way valve is characterized by comprising a fixed part and a sealing part, and an elastic part connected between the fixed part and the sealing part, wherein the fixed part, the sealing part and the elastic part are integrally made of plastic material.

[0009] The elastic one-way valve described above is characterized in that the elastic part is composed of at least two arc-shaped pieces, the two ends of which are respectively connected to a fixing part and a sealing part, and form a hollow cavity between the fixing part and the sealing part.

[0010] The elastic one-way valve described above is characterized in that the sealing part is provided with a first limiting post extending into the hollow cavity and a second limiting post extending out of the sealing part, the first limiting post and the second limiting post extending in opposite directions.

[0011] The elastic one-way valve described above is characterized in that the fixed part is provided with a third limiting post extending into the hollow cavity of the elastic part.

[0012] The elastic one-way valve described above is characterized in that the fixing part is a cylindrical body with one end open, the outer periphery of the opening end of the fixing part is provided with a protruding edge, and the sealing part has a limiting ring.

[0013] The elastic one-way valve described above is characterized in that the outer wall of the sealing part is provided with a first limiting rib arranged vertically.

[0014] A recyclable pistol pump employing the aforementioned elastic one-way valve is characterized in that the pistol pump includes a pump body, the pump body has a valve chamber, the lower part of the valve chamber has a liquid inlet channel communicating with it, a ball valve is provided at the position where the liquid inlet channel communicates with the valve chamber, a liquid guide chamber is provided on one side of the valve chamber communicating with it, a piston is provided in the liquid guide chamber, a trigger assembly capable of driving the piston to move is provided on the pump body, the pump body has a liquid spraying channel communicating with the valve chamber, and the elastic one-way valve is disposed in the valve chamber, the elastic one-way valve extends and retracts in the valve chamber to control the opening and closing of the valve chamber and the liquid spraying channel.

[0015] The recyclable pistol pump described above is characterized in that the elastic one-way valve includes a fixed part and a sealing part, and an elastic part connected between the fixed part and the sealing part, wherein the elastic part is composed of at least two arc-shaped plates; the two arc-shaped plates connect the fixed part and the sealing part, and form a hollow cavity between the fixed part and the sealing part.

[0016] The recyclable pistol pump described above is characterized in that the trigger assembly includes a trigger handle, the trigger handle is provided with a pair of connecting holes, the piston is provided with a connecting post that can be inserted into the pair of connecting holes, the upper end of the trigger handle is connected with a pair of reset arc rods that can drive the trigger handle to reset, and the pump body is provided with a pair of fixing posts that fix the pair of reset arc rods.

[0017] The recyclable pistol pump described above is characterized in that an outer cover is provided at the upper end of the pump body, and the fixing part of the elastic one-way valve is snapped between the outer cover and the pump body; the sealing part of the elastic one-way valve has a limiting ring, and a limiting groove for the limiting ring to be inserted is provided in the valve cavity.

[0018] The recyclable pistol pump described above is characterized in that the inner wall of the valve cavity is provided with a vertically arranged second limiting rib.

[0019] The recyclable pistol pump described above is characterized in that the outlet of the liquid spray channel is provided with a nozzle.

[0020] The recyclable pistol pump described above is characterized by a bottle cap connected to the lower part of the pump body.

[0021] The beneficial effects of this invention are:

[0022] The elastic one-way valve of the present invention includes a fixed part and a sealing part, and an elastic part connected between the fixed part and the sealing part; the fixed part, the sealing part and the elastic part are integrally made of PP or PE plastic material, which has a simple structure, low cost, convenient assembly and good elasticity.

[0023] The present invention features an elastic one-way valve that can be stretched and retracted within the valve chamber to control the opening and closing of the valve chamber and the spray channel. Moreover, the present invention is entirely injection molded from recyclable PP and PE materials, without the need to add any toughening agents or auxiliary materials, and can meet European high-efficiency recycling standards. The present invention also features fewer parts, lighter weight, simple and compact structure, convenient assembly, and low cost. [Attached Image Description]

[0024] Figure 1 This is a perspective view of the elastic one-way valve of the present invention;

[0025] Figure 2 This is a cross-sectional view of the elastic one-way valve of the present invention.

[0026] Figure 3 This is a perspective view of the recyclable all-plastic pistol pump of the present invention;

[0027] Figure 4 This is a cross-sectional view of the recyclable all-plastic pistol pump of the present invention;

[0028] Figure 5 yes Figure 4 Enlarged view of part A;

[0029] Figure 6 This is an exploded view of the recyclable all-plastic pistol pump of the present invention.

Detailed Implementation Methods

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] A flexible one-way valve includes a fixed part 71 and a sealing part 72, and an elastic part 73 connected between the fixed part 71 and the sealing part 72; the fixed part 71, the sealing part 72 and the elastic part 73 are integrally made of PP or PE plastic material.

[0032] The elastic part 73 of the present invention is composed of at least two arc-shaped pieces 731, with the two ends of the arc-shaped pieces 731 respectively connected to the fixing part 71 and the sealing part 72, and forming a hollow cavity between the fixing part 71 and the sealing part 72.

[0033] The sealing part 72 of the present invention is provided with a first limiting post 7210 extending into the hollow cavity and a second limiting post 7211 extending out of the sealing part 72, the first limiting post 7210 and the second limiting post 7211 extending in opposite directions.

[0034] The fixing part 71 of the present invention is provided with a third limiting post 711 that extends into the cavity of the elastic part 73.

[0035] The fixing part 71 of the present invention is a cylindrical body with one end open. The outer periphery of the opening end of the fixing part 71 is provided with a protruding edge 712, and the sealing part 72 has a limiting ring 722.

[0036] The outer wall of the sealing part 72 of the present invention is provided with a vertically arranged first limiting rib 7221.

[0037] The first limiting rib 7221, the limiting ring 722, the sealing part 72, the two arc-shaped pieces 731, the fixing part 71, the protruding edge 712, the first limiting post 7210, the second limiting post 7211 and the third limiting post 711 of the present invention are integrally made of PP or PE plastic material.

[0038] A retrievable pistol pump with the aforementioned elastic one-way valve includes a pump body 1, a valve chamber 2, an inlet channel 3 communicating with the lower part of the valve chamber 2, a ball valve 31 communicating with the valve chamber 2, a lead-in chamber 4 communicating with the valve chamber 2 on one side of the valve chamber 2, a piston 41 disposed in the lead-in chamber 4, a trigger assembly 5 disposed on the pump body 1 capable of driving the piston 41 to move, a spray channel 6 communicating with the valve chamber 2, and an elastic one-way valve 7 disposed in the valve chamber 2. The elastic one-way valve extends and retracts within the valve chamber 2 to control the opening and closing of the valve chamber 2 and the spray channel 6.

[0039] The elastic one-way valve 7 of the present invention includes a fixed part 71 and a sealing part 72, and an elastic part 73 connected between the fixed part 71 and the sealing part 72. The elastic part 73 is composed of at least two arc-shaped pieces 731, which connect the fixed part 71 and the sealing part 72 and form a hollow cavity between the fixed part 71 and the sealing part 72.

[0040] The sealing part 72 of the present invention is provided with a first limiting post 7210 extending into the hollow cavity and a second limiting post 7211 extending out of the sealing part 72, the first limiting post 7210 and the second limiting post 7211 extending in opposite directions. The second limiting post 7211 can be used to limit the upward movement distance of the ball valve 31.

[0041] The fixing part 71 of the present invention is provided with a third limiting post 711 that extends into the cavity of the elastic part 73. The third limiting post 711 and the first limiting post 7210 can be used to limit the contraction distance of the elastic one-way valve 7 and the compression distance under pressure.

[0042] The trigger assembly 5 of the present invention includes a trigger handle 51, the trigger handle 51 is provided with a pair of connecting holes, the piston 41 is provided with a connecting post 42 that can be inserted into the pair of connecting holes, the upper end of the trigger handle 51 is connected with a pair of reset arc rods 53 that can drive the trigger handle to reset, and the plastic pump body 1 is provided with a pair of fixing posts 11 that fix the pair of reset arc rods.

[0043] The pump body 1 of the present invention is provided with an outer cover 13 at the upper end. The fixing part 71 of the elastic one-way valve 7 is snapped between the outer cover 13 and the pump body 1, which can fix the fixing part 71 of the elastic one-way valve 7. The sealing part 72 of the elastic one-way valve 7 has a limiting ring 722, and the valve cavity 2 is provided with a limiting groove 21 for the limiting ring 722 to be inserted.

[0044] The pump body 1, ball valve 31, piston 41, trigger assembly 5, elastic check valve 7, nozzle 61 and bottle cap 12 of the present invention are all made of PP or PE plastic material.

[0045] The inner wall of the valve cavity 2 of the present invention is provided with a vertically arranged second limiting rib 22. Since the outer wall of the limiting ring 722 is provided with a vertically arranged first limiting rib 7221, the cooperation of the first limiting rib 7221 and the second limiting rib 22 can limit the elastic one-way valve 7 when it slides up and down in the valve cavity 2.

[0046] The upper part of the inner wall of the valve cavity 2 of the present invention is also provided with a limiting step 23, which can limit the downward movement of the fixing part 71 of the elastic one-way valve 7.

[0047] The present invention also provides a nozzle 61 at the outlet of the spray channel 6, and the structure of the nozzle 61 is the same as that of the nozzle of a current water gun.

[0048] The invention also includes a bottle cap 12 connected to the lower part of the pump body 1, which is used to connect the pistol pump to the bottle when it is fixed on the bottle. A liquid inlet tube 32 is also inserted into the liquid inlet channel 3, which is used to insert into the connected bottle.

[0049] The working principle of this invention is as follows:

[0050] When the invention is fixed to the bottle, the trigger handle 51 of the trigger assembly 5 slides forward under the action of the reset arc rod 53, and the piston 41 is also driven to slide forward. At this time, the air pressure in the liquid inlet chamber 4 increases, and the elastic one-way valve 7 blocks the connection between the valve chamber 2 and the spray channel 6. Under the action of pressure, the liquid flows from the bottle through the liquid inlet tube 32 into the liquid inlet channel 3, and then into the valve chamber 2 and the liquid inlet chamber 4. When the trigger handle 51 of the trigger assembly 5 is pressed, the liquid flows from the liquid inlet chamber 4 into the valve chamber 2. Under the action of the liquid, the ball valve 31 closes the inlet channel 3, the liquid flows upward, opens the elastic check valve 7, and sprays out from the spray channel 6. After the liquid in the valve chamber 2 is sprayed out, the trigger handle 51 is released. The trigger handle 51 slides forward under the action of the reset arc rod 53, and the piston 41 is also driven to slide forward. At this time, the air pressure in the liquid inlet chamber 4 increases, and at this time the elastic check valve 7 blocks the connection between the valve chamber 2 and the spray channel 6. The liquid enters the valve chamber and the liquid inlet chamber under the action of pressure, and so on.

Claims

1. A resilient one-way valve, characterized in that... It includes a fixing part (71) and a sealing part (72), and an elastic part (73) connecting the fixing part (71) and the sealing part (72). The fixing part (71), the sealing part (72) and the elastic part (73) are integrally made of plastic material. The elastic part (73) is composed of at least two arc-shaped pieces (731). The two ends of the two arc-shaped pieces (731) are respectively connected to the fixing part (71) and the sealing part (72), and form a hollow cavity between the fixing part (71) and the sealing part (72). The sealing part (72) is provided with a first limiting post (7210) extending into the hollow cavity and a second limiting post (7211) extending out of the sealing part (72). The first limiting post (7210) and the second limiting post (7211) extend in opposite directions. The fixing part (71) is provided with a third limiting post (711) extending into the hollow cavity of the elastic part (73).

2. The resilient check valve according to claim 1, characterized in that... The fixing part (71) is a cylindrical body with one end open. The outer periphery of the opening end of the fixing part (71) is provided with a protruding edge (712). The sealing part (72) has a limiting ring (722).

3. A resilient check valve according to claim 1, characterized in that... The outer wall of the sealing part (72) is provided with a vertically arranged first limiting rib (7221).

4. A retrievable pistol pump employing the resilient one-way valve as described in any one of claims 1-3, characterized in that... The pistol pump includes a pump body (1), a valve chamber (2) is provided in the pump body (1), a liquid inlet channel (3) communicating with the lower part of the valve chamber (2), a ball valve (31) is provided at the position where the liquid inlet channel (3) communicates with the valve chamber (2), a liquid inlet chamber (4) communicating with the valve chamber (2) is provided on one side of the valve chamber (2), a piston (41) is provided in the liquid inlet chamber (4), a trigger assembly (5) that can drive the piston (41) to move is provided on the pump body (1), a spray channel (6) communicating with the valve chamber (2) is provided in the pump body (1), and an elastic one-way valve (7) is provided in the valve chamber (2). The elastic one-way valve extends and retracts in the valve chamber (2) to control the opening and closing of the valve chamber (2) and the spray channel (6).

5. A recyclable pistol pump according to claim 4, characterized in that... The flexible one-way valve (7) includes a fixed part (71) and a sealing part (72), and an elastic part (73) connected between the fixed part (71) and the sealing part (72). The elastic part (73) is composed of at least two arc-shaped pieces (731). The two arc-shaped pieces (731) connect the fixed part (71) and the sealing part (72) and form a hollow cavity between the fixed part (71) and the sealing part (72).

6. A recyclable pistol pump according to claim 4, characterized in that... The trigger assembly (5) includes a trigger handle (51), the trigger handle (51) is provided with a pair of connecting holes, the piston (41) is provided with a connecting post (42) that can be inserted into the pair of connecting holes, the upper end of the trigger handle (51) is connected with a pair of reset arc rods (53) that can drive the trigger handle to reset, and the pump body (1) is provided with a pair of fixing posts (11) that fix the pair of reset arc rods.

7. A recyclable pistol pump according to claim 4, characterized in that... The pump body (1) is provided with an outer cover (13) at the upper end, and the fixing part (71) of the elastic check valve (7) is snapped between the outer cover (13) and the pump body (1); the sealing part (72) of the elastic check valve (7) has a limiting ring (722), and the valve cavity (2) is provided with a limiting groove (21) for the limiting ring (722) to be inserted.

8. A recyclable pistol pump according to claim 4, characterized in that... The inner wall of the valve cavity (2) is provided with a vertically arranged second limiting rib (22).

9. A recyclable pistol pump according to claim 4, characterized in that... The outlet of the liquid spraying channel (6) is provided with a nozzle (61).

10. A recyclable pistol pump according to claim 4, characterized in that... A bottle cap (12) is connected to the lower part of the pump body (1).

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