High-pressure air pump

Abstract

The utility model relates to the technical field of micro fluid pumps, in particular to a high-pressure air pump which comprises a pump cover, a valve block, a valve seat, a diaphragm, a diaphragm seat, a crank, a base and a driving part. The diaphragm, the valve seat, the valve plate and the pump cover are sequentially installed in the working cavity in the direction away from the guide cavity, the diaphragm seat is connected with the diaphragm and arranged in the guide cavity in a sliding mode, and the crank is driven by the driving piece to drive the diaphragm seat to move in a reciprocating mode. The problem that the service life is shortened due to the fact that a traditional air pump crank drives a diaphragm to deform in multiple directions is solved, the crank drives a guide rail type linear motion, and therefore the air pump has the advantages of being efficient, long in service life and low in noise.

Description

Technical Field

[0001] This application relates to the technical field of fluid pumps, and in particular to a high-pressure air pump. Background Technology

[0002] Fluid pumps are widely used in various devices that require fluid transport, and the fluid medium can be either liquid or gas. Fluid pumps utilize the reciprocating motion of an elastic diaphragm driven by a motor to change the volume of the pump chamber, and work in conjunction with a check valve to achieve fluid intake and discharge.

[0003] During intake, the diaphragm moves outward to increase the pump chamber volume, creating negative pressure, and external fluid is drawn into the pump chamber in one direction. During exhaust, the diaphragm moves inward to decrease the pump chamber volume, increase the pressure, and the fluid is discharged in one direction. However, in actual use, the elastic diaphragm wears down gradually due to repeated reciprocating motion, which reduces the efficiency of the fluid pump or even renders it inoperable. Utility Model Content

[0004] In order to make the pump more efficient and longer-lasting, the purpose of this application is to provide a high-pressure air pump.

[0005] The high-pressure air pump provided in this application adopts the following technical solution:

[0006] A high-pressure air pump includes a pump cover, a valve plate, a valve seat, a diaphragm, a diaphragm seat, a crank, a base, and a drive component. The base has an installation cavity, a guide cavity, and a working cavity. The diaphragm, valve seat, valve plate, and pump cover are sequentially installed in the working cavity along a direction away from the guide cavity. The diaphragm seat is connected to the diaphragm and slidably disposed in the guide cavity. The crank is driven by the drive component to drive the diaphragm seat to reciprocate.

[0007] By adopting the above technical solution, the guide cavity is designed so that the diaphragm seat can only move linearly along the extension direction of the guide cavity. In contrast, in traditional air pumps, when the crank drives the diaphragm to reciprocate, the diaphragm deforms in multiple directions due to the oscillation at the connection point between the crank and the diaphragm, significantly shortening its lifespan. The guide cavity, in conjunction with the diaphragm seat, ensures that the diaphragm deforms in the same direction as much as possible, thereby extending the overall lifespan of the pump. Furthermore, the gas flow rate changes more uniformly during intake and exhaust, reducing noise. Simultaneously, the diaphragm can maintain deformation stability for a longer period, ensuring the pump maintains efficient fluid delivery even after prolonged use. Therefore, the high-pressure air pump of this application features high efficiency, long lifespan, and low noise.

[0008] Optionally, the guide cavity has a limiting stage, and the diaphragm seat has a directional sliding part for cooperating with the limiting stage.

[0009] By adopting the above technical solution, the limiting stage of the guide cavity and the directional sliding part of the membrane seat cooperate to restrict the rotation of the membrane seat in the guide cavity, thereby further stabilizing the direction when the diaphragm deforms.

[0010] Optionally, the mounting cavity is provided with an auxiliary rotation limiting structure for cooperating with the rotation limiting platform, and the directional sliding part slides on the auxiliary rotation limiting structure.

[0011] By adopting the above technical solution, the structural part used to restrict the rotation of the diaphragm seat is set inside the installation cavity, which can effectively reduce the length of the guide cavity, so that the structure of the high-pressure air pump is more compact and the space utilization is better.

[0012] Optionally, the high-pressure air pump also includes a cover with a limiting slide plate that restricts the sliding of the diaphragm seat. The limiting slide plate cooperates with the guide cavity to form a sliding area.

[0013] By adopting the above technical solution, the diaphragm seat can only slide within the sliding area, which can avoid excessive deformation and damage to the diaphragm caused by excessive movement distance of the diaphragm seat. Thus, by extending the service life of the diaphragm, the overall service life of the pump can be extended.

[0014] Optionally, the crank and the drive unit are connected by gears.

[0015] By adopting the above technical solution, gear transmission can reduce the rotational speed directly output by the output shaft, and the crank rotation after differential control is more stable.

[0016] Optionally, the gear ratio of the gear drive is 1:2.

[0017] Optionally, the mounting cavity has at least two mounting ends, each mounting end being configured with a guide cavity and a working cavity, and the number of cranks is adapted to the number of mounting ends.

[0018] By adopting the above technical solution, the pump cover, valve plate, valve seat, diaphragm, diaphragm seat and crank essentially constitute the working structure to realize the function. The number of working structures is configured according to the number of installation ends, thereby further improving the working efficiency.

[0019] Optionally, there are two mounting ends, located at opposite ends of the mounting cavity.

[0020] By adopting the above technical solution, and configuring working structures at opposite ends, the overall stability of the high-pressure air pump can be improved, and the vibration and noise of the high-pressure air pump caused by structural instability can be reduced.

[0021] Optionally, both ends of the driver are output terminals, and each output terminal is equipped with a base.

[0022] By adopting the above technical solution, the output efficiency of the high-pressure air pump can be effectively improved by allocating one base to each of the two output ends. If each base is also equipped with two output ends, the high-pressure air pump has four symmetrically distributed working chambers, thereby further improving the overall structural stability of the high-pressure air pump and reducing the vibration and noise of the high-pressure air pump caused by structural instability.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Compared to traditional air pumps where the crank drives the diaphragm to deform in multiple directions, resulting in a shortened service life, the guide cavity design in this application allows the diaphragm seat to move linearly along the extension direction of the guide cavity in a sliding manner. This ensures that the diaphragm deforms in the same direction as much as possible, thereby extending the overall service life of the pump. Furthermore, the gas flow rate changes more uniformly during pump intake and exhaust, reducing noise. At the same time, the diaphragm can maintain deformation stability for a longer period of time, ensuring that the pump can maintain efficient fluid delivery even after long-term use.

[0025] 2. The limiting stage of the guide cavity and the directional sliding part of the diaphragm seat cooperate to limit the rotation of the diaphragm seat in the guide cavity, thereby further stabilizing the direction of diaphragm deformation. The structural part used to limit the rotation of the diaphragm seat is set in the installation cavity, which can effectively reduce the length of the guide cavity, so that the structure of the high-pressure air pump is more compact and the space utilization is better.

[0026] 3. The pump cover, valve plate, valve seat, diaphragm, diaphragm seat and crank essentially constitute the working structure to realize the function. The number of working structures is configured according to the number of installation ends, thereby further improving the working efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0028] Figure 2 This is a cross-sectional structural diagram of a three-dimensional embodiment of this application;

[0029] Figure 3 This is a top-view cross-sectional structural diagram of an embodiment of this application;

[0030] Figure 4 This is a cross-sectional structural diagram of the functional components in the embodiments of this application.

[0031] In the diagram: 1. Drive component; 11. Drive motor; 12. Output gear; 2. Functional component; 21. Pump cover; 22. Valve plate; 221. Inlet check valve; 222. Outlet check valve; 23. Valve seat; 24. Diaphragm; 241. Bag body; 242. Mounting edge; 243. Connecting part; 25. Diaphragm seat; 251. Snap-fit ​​part; 252. Directional sliding part; 26. Crank; 261. Eccentric wheel; 27. Base; 271. Mounting cavity; 2711. Auxiliary rotation limiting structure; 272. Guide cavity; 273. Working cavity; 28. Cover; 281. Limited slide platform. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4This application will be described in further detail below.

[0033] This application discloses a high-pressure air pump. The fluid in this high-pressure air pump can be gas or liquid. Although the description and claims use the description of a gas as the fluid, the use of a liquid as the transport medium is within the scope of protection of this application.

[0034] Reference Figure 1 and Figure 2 A high-pressure air pump includes a drive component 1 and a functional component 2, wherein the functional component 2 is used to realize fluid transport, and the drive component 1 is used to provide power to enable the functional component 2 to operate.

[0035] The driving component 1 includes a drive motor 11, a drive gear, and an output gear 12. The end of the drive motor 11 with its output shaft is the output end. Depending on the actual design requirements, there can be one or two output shafts, i.e., one or two output ends, with each output end equipped with a functional component 2. A drive gear is mounted on the output shaft of the drive motor 11, and the output gear 12, which meshes with the drive gear, is mounted on the functional component 2. In this embodiment, the drive motor 11 has two output ends, located at opposite ends along its axial direction. One drive motor 11 can drive all the functional components 2.

[0036] Reference Figure 2 and Figure 3 Functional component 2 includes pump cover 21, valve plate 22, valve seat 23, diaphragm 24, diaphragm seat 25, crank 26, base 27 and cover 28, wherein pump cover 21, valve plate 22, valve seat 23, diaphragm 24, diaphragm seat 25 and crank 26 substantially constitute the working structure for realizing the fluid transport function.

[0037] The base 27 is fixedly mounted on the output end of the drive motor 11, and the output shaft and drive gear of the drive motor 11 extend into the base 27. The base 27 has an installation opening, and the cover 28 is installed in the installation opening. The installation opening is mainly used to facilitate the installation of the working structure.

[0038] The base 27 has a mounting cavity 271, a guide cavity 272, and a working cavity 273. The area where the output shaft of the drive motor 11 is located is the mounting cavity 271, and the output gear 12 is rotatably connected to the mounting cavity 271. The mounting cavity 271 has at least one mounting end, each mounting end is configured with a guide cavity 272, and each guide cavity 272 is configured with a working cavity 273, with the working cavity 273 located on the side of the corresponding guide cavity 272 away from the mounting cavity 271. Each working cavity 273 is configured with a set of working structures. In this embodiment, there are two mounting ends, located at opposite ends of the mounting cavity 271.

[0039] Reference Figure 3 and Figure 4 For ease of explanation, the following description will use one of the working structures as an example.

[0040] Within the working chamber 273, the diaphragm seat 25, valve seat 23, valve plate 22, and pump cover 21 are sequentially installed in a direction away from the mounting chamber 271. The valve seat 23 and pump cover 21 form two mutually isolated air inlet and outlet channels via the valve plate 22. The valve plate 22 has an inlet check valve 221 and an outlet check valve 222, with the inlet check valve 221 located within the inlet channel and the outlet check valve 222 located within the outlet channel.

[0041] The diaphragm 24 is made of rubber and is elastic. The diaphragm 24 includes a bladder 241 and a mounting edge 242 surrounding the bladder 241. The mounting edge 242 is pressed and installed within the working chamber 273 by the valve seat 23. A gas flow zone is formed between the bladder 241 and the valve seat 23, and both the inlet and outlet channels are unidirectionally connected to the gas flow zone. The bladder 241 can move towards or away from the mounting chamber 271 to change the volume of the gas flow zone, thereby achieving unidirectional fluid flow.

[0042] To ensure the stability of the deformation direction of the capsule 241, the fit between the diaphragm seat 25 and the guide cavity 272 is a guide rail-like sliding mechanism. Specifically, the end of the capsule 241 facing the mounting cavity 271 has a connecting portion 243, and the valve seat 23 includes a snap-fit ​​portion 251 for engaging with the connecting portion 243 and a directional sliding portion 252 for slidingly connecting with the guide cavity 272. The guide cavity 272 has a limiting stage extending along the sliding direction of the diaphragm seat 25. The directional sliding portion 252 cooperates with the limiting stage to restrict the rotation of the diaphragm seat 25 within the guide cavity 272. Specifically, when the guide cavity 272 is a circular hole, the limiting stage is a raised platform-like structure on the inner wall of the guide cavity 272, so that the cross-section of the guide cavity 272 is not circular.

[0043] An auxiliary rotation limiting structure 2711 for cooperating with a rotation limiting platform is provided within the mounting cavity 271. The auxiliary rotation limiting structure 2711 can be a platform-shaped structure with its surface flush with the rotation limiting platform, and can be integrally formed with the rotation limiting platform. The connecting part 243 always slides within the guide cavity 272, while the end of the directional sliding part 252 away from the bladder 241 can slide out of the guide cavity 272. After the end of the directional sliding part 252 slides out of the guide cavity 272, it will continue to slide on the auxiliary rotation limiting structure 2711. At this time, the auxiliary rotation limiting structure 2711 restricts the rotation of the part of the directional sliding part 252 that has detached from the guide cavity 272.

[0044] The limited rotation platform and the auxiliary limited rotation structure 2711 work together to enable the diaphragm seat 25 to move stably and only in a straight line along the extension direction of the guide cavity 272, so that the direction of the diaphragm 24 remains as consistent as possible when it deforms, thereby reducing the deformation of the diaphragm 24 and extending the overall service life of the pump.

[0045] The cap 28 has a limiting slide 281 that restricts the sliding of the diaphragm seat 25. The limiting slide 281 cooperates with the guide cavity 272 to form a sliding area. After the end of the directional sliding part 252 slides away from the guide cavity 272, it can slide up to contact the limiting slide 281. The directional sliding part 252 that is in contact with the limiting slide 281 can no longer move away from the working cavity 273, thereby reducing the shortened service life of the diaphragm 24 due to excessive deformation.

[0046] A crank 26 is included in the working structure. One end of the crank 26 is rotatably connected to the directional sliding part 252, and the other end of the crank 26 is connected to the output gear 12 via an eccentric wheel 261. When the output gear 12 rotates one revolution, the crank 26 completes one reciprocating oscillation around the rotation axis connected to the directional sliding part 252, thereby driving the diaphragm seat 25 to complete one reciprocating linear sliding along the guide cavity 272 in a guide rail-like manner.

[0047] The implementation principle of a high-pressure air pump according to an embodiment of this application is as follows: During air intake, the crank 26 drives the diaphragm seat 25 to move away from the working chamber 273, increasing the volume of the gas flow area in the bladder 241. Air enters through the intake channel, while the outlet channel is closed by the outlet one-way valve 222. During air discharge, the crank 26 drives the diaphragm seat 25 to move closer to the working chamber 273, decreasing the volume of the gas flow area in the bladder 241. The intake channel is closed by the intake one-way valve 221, while the outlet channel opens, allowing gas to be discharged, thus completing the sequential gas delivery. The presence of multiple working structures ensures that one set of working structures intakes while another set exhausts, thereby improving the working efficiency of the high-pressure air pump.

[0048] The embodiments described herein are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A high pressure gas pump characterized by, The high-pressure air pump comprises a pump cover (21), a valve piece (22), a valve seat (23), a diaphragm (24), a diaphragm seat (25), a crank (26), a base (27) and a driving member (1), the base (27) has a mounting cavity (271), a guide cavity (272) and a working cavity (273), the diaphragm (24), the valve seat (23), the valve piece (22) and the pump cover (21) are sequentially arranged in the working cavity (273) in a direction away from the guide cavity (272), the diaphragm seat (25) is connected with the diaphragm (24) and is slidably arranged in the guide cavity (272), and the crank (26) is driven by the driving member (1) to drive the diaphragm seat (25) to reciprocate.

2. A high pressure gas pump according to claim 1, characterized in that The guide cavity (272) is provided with a limited rotation table, and the diaphragm seat (25) has a directional sliding part (252) for cooperating with the limited rotation table.

3. A high pressure gas pump according to claim 2, wherein The mounting cavity (271) is provided with an auxiliary limited rotation structure (2711) for cooperating with the limited rotation table, and the directional sliding part (252) slides on the auxiliary limited rotation structure (2711).

4. A high pressure gas pump according to claim 1, wherein The high-pressure air pump further comprises a cover (28), the cover (28) has a limited sliding table (281) for limiting the sliding of the diaphragm seat (25), and the limited sliding table (281) cooperates with the guide cavity (272) to form a slidable area.

5. A high pressure gas pump according to claim 1, wherein The crank (26) and the driving member (1) are connected through gear transmission.

6. A high pressure gas pump according to claim 5, wherein The gear transmission has a gear ratio of 1:

2.

7. A high pressure gas pump according to claim 1, wherein The mounting cavity (271) has at least two mounting ends, each mounting end is provided with a guide cavity (272) and a working cavity (273), and the number of the cranks (26) is matched with the number of the mounting ends.

8. A high pressure gas pump according to claim 7, characterized in that The number of the mounting ends is two, and the two mounting ends are located at opposite ends of the mounting cavity (271).

9. A high pressure gas pump according to claim 1, wherein Both ends of the driving member (1) are output ends, and each output end is provided with a base (27).

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