Press pump

Abstract

The utility model discloses a pressing pump which comprises a shell internally provided with a cavity. The piston is inserted into the cavity; the liquid inlet end is communicated with the cavity, and a first one-way valve assembly is arranged in the liquid inlet end; the liquid outlet end is communicated with the cavity, and a second one-way valve assembly is arranged in the liquid outlet end; the piston reciprocates in the cavity, so that the first one-way valve assembly opens the liquid inlet end, the second one-way valve assembly blocks the liquid outlet end, and liquid is sucked into the cavity through the liquid inlet end under the action of negative pressure; or the first one-way valve assembly blocks the liquid inlet end, the second one-way valve assembly opens the liquid outlet end, and the liquid is discharged through the liquid outlet end. The utility model provides a pressing pump which does not leak liquid when the inclination angle is too large or the pressing pump is inverted and can also be pressed to discharge liquid.

Description

Technical Field

[0001] This application relates to the field of pump bodies, and in particular to a push-button pump. Background Technology

[0002] Existing push-button pumps, including those used in everyday life for shower gel, shampoo, lotion, cleaning brushes, etc., typically work by manually compressing or expanding the pump body to create pressure within the pump and thus deliver the liquid. However, existing push-button pumps are prone to leakage when tilted at excessive angles or inverted, and may fail to dispense liquid when pressed. Summary of the Invention

[0003] Based on this, the problem solved by this application is to provide a press pump that does not leak when tilted at too large an angle or when inverted, while still being able to press out liquid.

[0004] This application provides a press pump, including:

[0005] The shell has an internal cavity;

[0006] The piston is inserted into the cavity;

[0007] The housing further includes: a liquid inlet end, communicating with the cavity, wherein a first one-way valve assembly is disposed within the liquid inlet end; and

[0008] The liquid outlet is connected to the cavity, and a second one-way valve assembly is provided inside the liquid outlet.

[0009] The piston reciprocates within the cavity, causing the first one-way valve assembly to open the inlet end and the second one-way valve assembly to block the outlet end. Under negative pressure, liquid is drawn into the cavity through the inlet end; or the first one-way valve assembly blocks the inlet end and the second one-way valve assembly opens the outlet end, discharging liquid through the outlet end.

[0010] In one embodiment, the first one-way valve assembly includes a first elastic member and a first blocking member, wherein the first elastic member elastically presses against the first blocking member, thereby blocking the liquid inlet end;

[0011] The second one-way valve assembly includes a second elastic element and a second blocking element. The second elastic element elastically presses against the second blocking element, causing the second blocking element to seal the liquid outlet end.

[0012] In one embodiment, the liquid inlet includes:

[0013] A first abutting wall is disposed adjacent to the cavity, and a first opening is provided on the first abutting wall, the first opening communicating with the cavity;

[0014] The first pipe wall is connected to the first abutting wall, and a first one-way valve port is provided inside the first pipe wall;

[0015] The first elastic element and the first blocking element are located in the first pipe wall. One end of the first elastic element abuts against the first abutting wall, and the other end is connected to the first blocking element. The first blocking element seals the first one-way valve port.

[0016] In one embodiment, the liquid outlet includes:

[0017] The second abutting wall is disposed away from the cavity, and the second abutting wall is provided with a second opening;

[0018] The second pipe wall is connected to the second abutment wall, and a second one-way valve port is provided inside the second pipe wall. The second one-way valve port is connected to the cavity.

[0019] The second elastic element and the second blocking element are located in the second pipe wall. One end of the second elastic element abuts against the second abutting wall, and the other end is connected to the second blocking element. The second blocking element seals the second one-way valve port.

[0020] In one embodiment, the housing includes a main outer shell, the cavity is formed in the main outer shell, the main outer shell extends with a sleeve, the first abutting wall is located at the connection between the sleeve and the main outer shell, and the first tube wall is inserted in the sleeve.

[0021] In one embodiment, the housing includes a main outer shell, the cavity is formed in the main outer shell, the second tube wall is integrally formed with the main outer shell, the liquid outlet further includes a tube sleeve, the tube sleeve is fitted on the second tube wall, and the second abutment wall is formed in the tube sleeve.

[0022] In one embodiment, the housing includes a main outer shell, the cavity is formed in the main outer shell, a third elastic element is disposed in the cavity, the piston includes a plug and a rod, the rod is exposed through the main outer shell, the plug contacts the third elastic element, and the plug can slide against the inner wall of the main outer shell. Pressing the rod drives the plug to reciprocate.

[0023] In one embodiment, the first one-way valve port or the second one-way valve port includes a protruding ring of bosses, which are used to make the diameter of the first one-way valve port smaller than the inner diameter of the first pipe wall, or the diameter of the second one-way valve port smaller than the inner diameter of the second pipe wall.

[0024] In one embodiment, the inlet end and the outlet end are arranged vertically, and the piston is T-shaped with the inlet end and the outlet end. Pressing the piston can push the air or liquid in the cavity to the vicinity of the inlet end and the outlet end.

[0025] In one embodiment, the first elastic member or the second elastic member may be configured as a spring, a sheet, or silicone, and the first barrier member or the second barrier member may be configured as a spherical structure or a diaphragm.

[0026] Based on the above description, the piston in this application is inserted into the cavity of the housing. When the user presses the piston, it reciprocates within the cavity, thereby achieving the intake and discharge of liquid. Both the inlet and outlet ends are connected to the cavity. The inlet end is equipped with a first one-way valve assembly, and the outlet end is equipped with a second one-way valve assembly. When the piston moves to the left, a negative pressure is created within the cavity, opening the first one-way valve assembly and allowing liquid to flow into the cavity through the inlet end. Simultaneously, the second one-way valve assembly seals the outlet end to prevent liquid leakage, thus preventing leakage even when the pump is tilted at an excessive angle or inverted. When the piston moves to the right, the liquid within the cavity is compressed, opening the second one-way valve assembly and allowing liquid to discharge through the outlet end. Simultaneously, the first one-way valve assembly seals the inlet end to prevent air from entering the cavity. Although the liquid position changes when the pump is tilted at an excessive angle or inverted, the structure of the first and second one-way valve assemblies remains unchanged. During the reciprocating motion of the piston, the first one-way valve assembly and the second one-way valve assembly can also cooperate to discharge liquid. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the push pump provided in an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the exploded structure of the push pump provided in the embodiments of this application;

[0029] Figure 3 This is an exploded cross-sectional view of the press pump provided in an embodiment of this application;

[0030] Figure 4 This is one of the cross-sectional structural schematic diagrams of the push pump provided in the embodiments of this application;

[0031] Figure 5 A second schematic cross-sectional view of the push pump provided in the embodiments of this application.

[0032] Figure 6 for Figure 5 A magnified structural diagram of point A in the middle.

[0033] Reference numerals: 1-Shell; 11-Main shell; 111-Cavity; 112-Trench; 113-Cover; 12-Inlet; 121-Sleeve; 1211-First opening; 1212-First abutting wall; 122-First pipe wall; 1221-First one-way valve port; 13-Outlet; 131-Second pipe wall; 1311-Second one-way valve port; 132-Pipe sleeve; 1321-Second abutting wall; 1322-Second opening; 2-Piston; 21-Rod; 22-Plug; 3-Third elastic element; 4-Second one-way valve assembly; 41-Second barrier; 42-Second elastic element; 5-First one-way valve assembly; 51-First barrier; 52-First elastic element; 133-Boss; 1331-Inclined surface. Detailed Implementation

[0034] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or illustrative implementation of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0038] The present application will now be described in detail with reference to the accompanying drawings.

[0039] To solve the above technical problems, combined with Figures 1-6As shown in the illustration, this application provides a push-button pump, which includes a housing 1. Inside the housing 1 is a cavity 111 for containing liquid and providing space for the movement of a piston 2. The piston 2 is inserted into the cavity 111 and can reciprocate within it. The movement of the piston 2 is the power source for the push-button pump, enabling the intake and discharge of liquid through its reciprocating motion. Both the inlet end 12 and the outlet end 13 are connected to the cavity 111. The inlet end 12 is equipped with a first one-way valve assembly 5, and the outlet end 13 is equipped with a second one-way valve assembly 4. When the piston 2 moves to the left, a negative pressure is created in the cavity 111, opening the first one-way valve assembly 5 and allowing liquid to flow into the cavity 111 through the inlet end 12. Simultaneously, the second one-way valve assembly 4 seals the outlet end 13, preventing liquid from flowing out, thus preventing leakage even when the push-button pump is tilted at an excessive angle or inverted. When piston 2 moves to the right, the liquid in chamber 111 is compressed, and the second check valve assembly 4 opens, allowing the liquid to be discharged through outlet 13. Simultaneously, the first check valve assembly 5 seals inlet 12 to prevent air from entering chamber 111. Even when the pump is tilted too far or inverted, although the liquid position changes, the structure of the first and second check valve assemblies 5 and 4 remains unchanged. During the reciprocating motion of piston 2, the first and second check valve assemblies 5 and 4 continue to work together to discharge liquid.

[0040] In one embodiment of this application, combined with Figures 2-4As shown, the first one-way valve assembly 5 consists of a first elastic element 52 and a first blocking element 51. The first elastic element 52 (e.g., a spring, sheet metal, elastic silicone, etc.) presses against the first blocking element 51 by elastic force. The first blocking element 51 is typically a movable sealing component whose shape and size match the first one-way valve port 1221 of the inlet end 12, and can move within the channel of the inlet end 12. Under normal conditions, the elastic force of the first elastic element 52 causes the first blocking element 51 to fit tightly against the first one-way valve port 1221 of the inlet end 12, thereby sealing the first one-way valve port 1221. When the piston 2 moves to the left in the cavity 111, the pressure inside the cavity 111 decreases, forming a negative pressure. At this time, the liquid pressure at the inlet end 12 overcomes the elastic force of the first elastic element 52, pushing the first blocking element 51 to move within the channel of the inlet end 12, thereby opening the first one-way valve port 1221, allowing the liquid to flow smoothly into the cavity 111. Once the liquid flow is complete, the elastic force of the first elastic element 52 will reset the first blocking element 51, resealing the first one-way valve port 1221, ensuring that the liquid does not flow back from the cavity 111 to the inlet end 12. The second one-way valve assembly 4 consists of a second elastic element 42 and a second blocking element 41. The second elastic element 42 also presses against the second blocking element 41 with its elastic force. The structure and function of the second blocking element 41 are similar to those of the first blocking element 51; its function is to seal the second one-way valve port 1311 at the outlet end 13. Under normal conditions, the elastic force of the second elastic element 42 keeps the second blocking element 41 tightly fitted at the second one-way valve port 1311 at the outlet end 13, preventing liquid from flowing out of the cavity 111 through the outlet end 13. When the piston 2 moves to the right in the cavity 111, the pressure inside the cavity 111 increases. At this time, the liquid pressure inside the cavity 111 overcomes the elastic force of the second elastic element 42, pushing the second blocking element 41 to open the second one-way valve port 1311, allowing the liquid to be discharged smoothly from the outlet end 13. Once the liquid discharge is complete, the elastic force of the second elastic element 42 will reset the second blocking element 41, re-sealing the second one-way valve port 1311 at the outlet end 13, preventing the liquid from flowing back into the cavity 111. The first one-way valve assembly 5 and the second one-way valve assembly 4 can precisely control the unidirectional flow of the liquid, ensuring that during the operation of the press pump, the liquid can only enter the cavity 111 from the inlet end 12 and be discharged from the outlet end 13. This prevents leakage when the press pump is tilted at too large an angle or inverted, thereby achieving efficient and reliable liquid delivery.

[0041] In another embodiment of this application, combined with Figure 3 and Figure 4As shown, the inlet end 12 includes a first abutment wall 1212, which is disposed adjacent to the cavity 111. Preferably, the first abutment wall 1212 is part of the main shell 11, or the first abutment wall 1212 is a wall surface of the inlet end 12 that is sealed. The first abutment wall 1212 provides a stable support point for the first elastic member 52. A first opening 1211 is provided on the first abutment wall 1212, which is directly connected to the cavity 111 for liquid to flow between the cavity 111 and the inlet end 12. A first pipe wall 122 is connected to the first abutment wall 1212. A first one-way valve port 1221 is provided inside the first pipe wall 122, which is the necessary channel for liquid to enter the cavity 111. The first elastic member 52 and the first barrier member 51 are located in the middle of the first pipe wall 122. One end 521 of the first elastic element 52 abuts against the first abutment wall 1212, and the other end 522 is connected to the first blocking element 51. This allows the first elastic element 52 to provide a continuous elastic force to the first blocking element 51, ensuring that the first blocking element 51 tightly seals the first one-way valve port 1221 under normal conditions. When the piston 2 moves to the left in the cavity 111, the pressure inside the cavity 111 decreases, creating a negative pressure. At this time, the liquid pressure at the inlet end 12 overcomes the elastic force of the first elastic element 52, pushing the first blocking element 51 away from the first one-way valve port 1221, thereby opening the channel and allowing the liquid to flow smoothly into the body cavity. Once the liquid has flowed in, the elastic force of the first elastic element 52 pushes the first blocking element 51 back into the first one-way valve port 1221, resealing the channel and preventing the liquid from flowing back from the cavity 111 to the inlet end 12. The liquid inlet end 12 can achieve efficient liquid suction function, and through the synergistic effect of the first elastic member 52 and the first barrier member 51, it ensures unidirectional flow of liquid.

[0042] In one embodiment of this application, combined with Figure 3 and Figure 4As shown, the liquid outlet 13 includes a second abutment wall 1321, which is disposed away from the cavity 111. The second abutment wall 1321 may be part of the second pipe wall 131, or a structure connected to the second pipe wall 131, and the second abutment wall 1321 is configured to block the passage of the second pipe wall 131. The second abutment wall 1321 provides stable support for the second elastic member 42, and a second opening 1322 is provided on the second abutment wall 1321, which is the outlet channel for liquid to be discharged from the cavity 111. The second pipe wall 131 is connected to the second abutment wall 1321, and a second one-way valve port 1311 is provided inside the second pipe wall 131. The second one-way valve port 1311 is directly connected to the cavity 111 and is the necessary channel for liquid to be discharged from the cavity 111. The second elastic member 42 and the second blocking member 41 are both located in the second pipe wall 131. One end 421 of the second elastic element 42 abuts against the second abutment wall 1321, and the other end 422 is connected to the second blocking element 41. The second elastic element 42 can provide a continuous elastic force to the second blocking element 41, ensuring that the second blocking element 41 tightly seals the second one-way valve port 1311 under normal conditions. When the piston 2 moves to the right in the cavity 111, the pressure in the cavity 111 increases, and the liquid pressure overcomes the elastic force of the second elastic element 42, pushing the second blocking element 41 away from the second one-way valve port 1311, thereby opening the channel and allowing the liquid to be discharged smoothly from the cavity 111 through the second one-way valve port 1311. Once the liquid has been discharged, the elastic force of the second elastic element 42 will push the second blocking element 41 back into the second one-way valve port 1311, causing it to re-seal the channel and prevent the liquid from flowing back into the cavity 111. The liquid outlet 13 can achieve efficient liquid discharge function, and through the synergistic effect of the second elastic member 42 and the second barrier member 41, it ensures unidirectional flow of liquid.

[0043] In one embodiment of this application, combined with Figures 1-4As shown, the housing 1 includes a main outer shell 11, with a cavity 111 formed inside the main outer shell 11 to accommodate the piston 2 and provide space for liquid intake and discharge. A sleeve 121 extends from one side of the main outer shell 11, serving as the structural component for mounting and forming the liquid inlet end 12. A first abutting wall 1212 is located at the connection between the sleeve 121 and the main outer shell 11. Preferably, the first abutting portion is a side wall of the main outer shell 11, and a first opening 1211 is directly formed on the side wall of the main outer shell 11. A first tube wall 122 is inserted into the sleeve 121, with one end of the first tube wall 122 connected to the first opening 1211 of the first abutting wall 1212, and the other end of the first tube wall 122 open for liquid intake. A first one-way valve port 1221 is provided inside the first tube wall 122 to control the unidirectional flow of liquid from the liquid inlet end 12 into the cavity 111. The outer diameter of the end of the first tube wall 122 furthest from the main body shell 11 is smaller, which is used to connect to and limit the external tube body. The combination of the main body shell 11 of the housing 1 and the sleeve 121 not only provides a stable mounting base for the structure of the press pump, but also optimizes the sealing performance of the liquid inlet end 12 through the cooperation of the first abutment wall 1212 and the first tube wall 122.

[0044] In one embodiment of this application, combined with Figures 1-4 As shown, the housing 1 includes a main outer shell 11, with a cavity 111 formed inside the main outer shell 11 to accommodate the piston 2 and provide space for liquid intake and discharge. The second tube wall 131 is integrally formed with the main outer shell 11. This design not only enhances the overall structural stability but also simplifies the assembly process and improves production efficiency. The outlet end 13 also includes a sleeve 132, which is fitted over the second tube wall 131 to further fix and protect the structural components of the outlet end 13. The sleeve 132 and the second tube wall 131 form a compact assembly relationship, ensuring the stability and reliability of the outlet end 13 during use. A second abutment wall 1321 is provided inside the sleeve 132 and located above the second tube wall 131. Similarly, the outer diameter of the end of the second tube wall 131 furthest from the main outer shell 11 is smaller, used to connect to and limit the external tube body. A second opening 1322 is provided on the second abutment wall 1321 to communicate with the channel of the second tube wall 131. The second abutment wall 1321 provides a stable support point for the second elastic element 42. Under normal conditions, one end of the second elastic element 42 abuts against the second abutment wall 1321, and the other end is connected to the second barrier element 41. The elastic force causes the second barrier element 41 to tightly seal the second one-way valve port 1311, preventing reverse flow of liquid. This structural design, with the integrated installation of the second pipe wall 131 of the outlet end 13 and the main housing 11, combined with the cooperation of the sleeve 132 and the second abutment wall 1321, not only optimizes the overall structure of the pump but also enhances the sealing performance of the outlet end 13.

[0045] In one embodiment of this application, combined with Figures 2-4 As shown, the housing 1 includes a main outer shell 11, with a cavity 111 formed inside the main outer shell 11 to accommodate the piston 2 and provide space for liquid intake and discharge. The main outer shell 11 includes a concave groove 112 and a cover 113, which are sealed together to form the cavity 111. The inlet end 12 and the outlet end 13 communicate with the side wall of the groove 112. A third elastic element 3 is also provided inside the cavity 111, whose main function is to provide elastic support and reset function for the movement of the piston 2. The piston 2 consists of a plug 22 and a rod 21. The rod 21 passes through the cover 113 and is exposed outside the cover 113, allowing the user to operate it directly by pressing a button. The plug 22 is located inside the cavity 111, in contact with the third elastic element 3, and the plug 22 can slide tightly against the inner wall of the main outer shell 11. This ensures smooth and well-sealed movement of the plug 22 within the cavity 111, preventing leakage of liquid or gas during its movement. When the user presses the lever 21, the plug 22 of the piston 2 reciprocates within the cavity 111. The specific process is as follows: Pressing process: When the user presses the lever 21, the plug 22 moves to the right within the cavity 111, increasing the pressure within the cavity 111 and pushing the second one-way valve assembly 4 to open, allowing liquid to be discharged through the outlet end 13. Resetting process: When the user releases the lever 21, the elastic force of the third elastic element 3 pushes the plug 22 to the left, reducing the pressure within the cavity 111 and creating a negative pressure. The first one-way valve assembly 5 opens, and liquid is drawn into the cavity 111 through the inlet end 12. Through this structural design, the movement of the piston 2 not only efficiently achieves the intake and discharge of liquid, but the elastic support function of the third elastic element 3 also ensures that the piston 2 automatically resets after each press, thus achieving a continuous and stable press-to-discharge function.

[0046] In one embodiment of this application, combined with Figure 5 and Figure 6 As shown, a raised boss 133 is provided on the inner wall of the first one-way valve port 1221 or the second one-way valve port 1311. The design of this boss 133 ensures that the diameter of the first one-way valve port 1221 is smaller than the inner diameter of the first pipe wall 122, or the diameter of the second one-way valve port 1311 is smaller than the inner diameter of the second pipe wall 131. This creates a relatively narrow channel at the one-way valve port. Preferably, each boss 133 is provided with an inclined surface 1331. In this case, the first blocking member 51 may be configured as a spherical structure, and the inclined surface 1331 provides a tighter sealing contact surface for the first blocking member 51 or the second blocking member 41. When the first elastic member 52 or the second elastic member 42 applies elastic force, the blocking member can more accurately seal the one-way valve port, preventing liquid backflow.

[0047] In one embodiment of this application, combined with Figures 2-4 As shown, preferably, the inlet end 12 and the outlet end 13 are arranged vertically, and the piston 2 is T-shaped relative to the inlet end 12 and the outlet end 13. This allows the air or liquid in the cavity 111 to be effectively pushed to the vicinity of the inlet end 12 and the outlet end 13 when the piston 2 is pressed, thereby achieving the function of liquid intake and discharge. The combination of the T-shaped piston 2 and the vertically arranged inlet end 12 and outlet end 13 not only optimizes the internal fluid dynamics of the pump but also improves the efficiency of liquid intake and discharge.

[0048] In one embodiment of this application, combined with Figure 2 As shown, the material and structure of the first elastic element 52 or the second elastic element 42 can be selected in various ways, and can be set as elastic materials such as springs, sheet metal, or silicone. These material choices can provide appropriate elastic force and durability according to different design requirements and usage scenarios, ensuring the normal operation of the one-way valve assembly. Meanwhile, the shape and structure of the first blocking element 51 or the second blocking element 41 can also be implemented in various ways, and can be designed as a spherical structure or a diaphragm. The spherical structure includes steel balls, glass beads, or ceramic beads. Spherical blocking elements typically have good sealing performance and flexibility, able to tightly seal the one-way valve port under the action of the elastic element, while flexibly opening the channel under liquid pressure. Diaphragm structures have good flexibility and responsiveness, enabling rapid opening and closing actions under small pressure changes, thereby improving the working efficiency of the pump. It is understood that the first blocking element 51 and the second blocking element 41 can also be set in other shapes, such as conical or rod-shaped, as long as they can achieve the blocking effect.

[0049] It should be noted that the above-mentioned technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this application specification; and, for those skilled in the art, improvements or modifications can be made based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A press pump, characterized by, The utility model relates to a liquid suction and discharge device, comprising: a shell (1) with a cavity (111) inside; a piston (2) inserted in the cavity (111); the shell (1) further comprises: a liquid inlet end (12) in communication with the cavity (111), the liquid inlet end (12) is provided with a first one-way valve assembly (5) inside; and a liquid outlet end (13) in communication with the cavity (111), the liquid outlet end (13) is provided with a second one-way valve assembly (4) inside; the piston (2) reciprocates in the cavity (111), so that the first one-way valve assembly (5) opens the liquid inlet end (12), the second one-way valve assembly (4) blocks the liquid outlet end (13), under the action of negative pressure, liquid is sucked into the cavity (111) through the liquid inlet end (12); or the first one-way valve assembly (5) blocks the liquid inlet end (12), the second one-way valve assembly (4) opens the liquid outlet end (13), and liquid is discharged through the liquid outlet end (13).

2. The squeeze pump of claim 1, wherein the first one-way valve assembly (5) comprises a first elastic member (52) and a first blocking member (51), the first elastic member (52) elastically abuts against the first blocking member (51), so that the first blocking member (51) blocks the liquid inlet end (12) on; the second one-way valve assembly (4) comprises a second elastic member (42) and a second blocking member (41), the second elastic member (42) elastically abuts against the second blocking member (41), so that the second blocking member (41) blocks the liquid outlet end (13) on.

3. The squeeze pump of claim 2, wherein the liquid inlet end (12) comprises: a first abutting wall (1212) arranged adjacent to the cavity (111), the first abutting wall (1212) is provided with a first opening (1211), and the first opening (1211) is in communication with the cavity (111); a first tube wall (122) connected with the first abutting wall (1212), and a first one-way valve port (1221) is arranged in the first tube wall (122); the first elastic member (52) and the first blocking member (51) are located in the first tube wall (122), one end (521) of the first elastic member (52) abuts against the first abutting wall (1212), the other end (522) is connected with the first blocking member (51), and the first blocking member (51) blocks the first one-way valve port (1221).

4. The squeeze pump of claim 3, wherein the liquid outlet end (13) comprises: a second abutting wall (1321) arranged away from the cavity (111), and a second opening (1322) is arranged on the second abutting wall (1321); a second tube wall (131) connected with the second abutting wall (1321), and a second one-way valve port (1311) is arranged in the second tube wall (131), and the second one-way valve port (1311) is in communication with the cavity (111); The second elastic member (42) and the second barrier member (41) are located in the second pipe wall (131), one end (421) of the second elastic member (42) abuts on the second abutting wall (1321), the other end (422) is connected with the second barrier member (41), and the second barrier member (41) is blocked at the second one-way valve port (1311).

5. The squeeze pump of claim 3, wherein The shell (1) comprises a main body shell (11), the cavity (111) is arranged in the main body shell (11), the main body shell (11) is provided with a sleeve (121), the first abutting wall (1212) is located at the connection between the sleeve (121) and the main body shell (11), and the first pipe wall (122) is arranged in the sleeve (121).

6. The squeeze pump of claim 4, wherein The shell (1) comprises a main body shell (11), the cavity (111) is arranged in the main body shell (11), the second pipe wall (131) is arranged integrally with the main body shell (11), and the liquid outlet end (13) further comprises a pipe sleeve (132), the pipe sleeve (132) is arranged on the second pipe wall (131), and the second abutting wall (1321) is arranged in the pipe sleeve (132).

7. The squeeze pump of claim 1 wherein, The shell (1) comprises a main body shell (11), the cavity (111) is arranged in the main body shell (11), the cavity (111) is provided with a third elastic member (3), the piston (2) comprises a plug body (22) and a rod portion (21), the rod portion (21) is arranged to be exposed through the main body shell (11), the plug body (22) is in contact with the third elastic member (3), and the plug body (22) can slide in close contact with the inner wall of the main body shell (11), and the rod portion (21) is pressed to drive the plug body (22) to reciprocate.

8. The squeeze pump of claim 4, wherein The first one-way valve port (1221) or the second one-way valve port (1311) comprises a protruding ring of bosses (133), so that the diameter of the first one-way valve port (1221) is smaller than the inner diameter of the first pipe wall (122), or the diameter of the second one-way valve port (1311) is smaller than the inner diameter of the second pipe wall (131).

9. The squeeze pump of claim 7, wherein The liquid inlet end (12) and the liquid outlet end (13) are arranged in an up-down position relationship, the piston (2) is arranged in a T shape with the liquid inlet end (12) and the liquid outlet end (13), and pressing the piston (2) can push the air or liquid in the cavity (111) to the vicinity of the liquid inlet end (12) and the liquid outlet end (13).

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