Air bag type damping stabilized pressure pump

Abstract

The utility model discloses an air bag type damping stabilized pressure pump which comprises a pump body, and the pump body is provided with an inlet, a low-pressure cavity, a high-pressure cavity and an outlet which are sequentially communicated. The flexible gasket is provided with a first buffer plane and a second buffer plane; a buffering cavity is defined between the pump body and the portion, provided with the first buffering plane, of the flexible gasket to form an air bag type structure, and a high-pressure cavity and / or a low-pressure cavity is defined between the pump body and the portion, provided with the second buffering plane, of the flexible gasket. The flexible gasket is in contact with the fluid through the second buffering plane, any position of the second buffering plane of the flexible gasket can be elastically deformed under the pressure of the fluid, the contact area of the flexible gasket and the fluid is large, and the buffering and pressure stabilizing effects are good; the structure of the flexible gasket is relatively flat, so that the flexible gasket can be installed and used in a narrow space and has good universality; the whole structure of the utility model is compact and simple.

Description

Technical Field

[0001] This utility model relates to the field of pump technology, and in particular to a pneumatic damping pressure stabilizing pump. Background Technology

[0002] A pump is a machine that transports or pressurizes fluids. It transfers the mechanical energy of a prime mover or other external energy to a liquid, increasing the liquid's energy. Pumps are mainly used to transport liquids such as water, oil, acid and alkali solutions, emulsions, suspensions, and liquid metals. They can also transport liquid-gas mixtures and liquids containing suspended solids.

[0003] For pumps used to pressurize fluids, such as diaphragm pumps, the pump's interior is generally equipped with interconnected low-pressure chambers and high-pressure chambers. After the fluid inside the pump is pressurized, in order to avoid fluid pressure instability, damping components are generally installed inside the pump body to buffer and stabilize the fluid. Existing damping components generally have multiple flexible protrusion structures arranged on the surface. The flexible protrusion structures undergo elastic deformation under the action of fluid pressure in their protrusion direction, thereby achieving buffering and stabilizing the fluid. The buffering and stabilizing effect of this type of damping component is poor, and the structure is relatively complex. Utility Model Content

[0004] To overcome at least one of the defects of the prior art, this utility model provides a pneumatic damping pressure stabilizing pump, which uses a flexible gasket that contacts the fluid through a second buffer plane. Any position of the second buffer plane of the flexible gasket can undergo elastic deformation under the pressure of the fluid. The flexible gasket has a large contact area with the fluid, resulting in good buffering and pressure stabilization effects. Furthermore, the flexible gasket achieves buffering through the portion having a first buffer plane and a second buffer plane. The flexible gasket structure is relatively flat, allowing it to be installed and used in relatively narrow spaces, thus exhibiting good versatility. The overall structure of this utility model is relatively compact and simple.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] A pneumatic damping pressure stabilizing pump, comprising:

[0007] The pump body is provided with an inlet, a low-pressure chamber, a high-pressure chamber and an outlet connected in sequence.

[0008] The pump body is equipped with a flexible gasket. The flexible gasket has a first buffer plane and a second buffer plane, which are two opposite sides of the flexible gasket.

[0009] The pump body and the flexible gasket with the first buffer plane form a buffer cavity to form an airbag structure. The pump body and the flexible gasket with the second buffer plane form a high-pressure cavity and / or a low-pressure cavity. The buffer cavity and the high-pressure cavity, and the buffer cavity and the low-pressure cavity are separated from each other.

[0010] In some embodiments, the pump body is provided with a snap-fit ​​structure for engaging with a flexible gasket.

[0011] In some embodiments, the pump body includes an interconnected pump body body and a pump cover, with the pump body body and a portion of the flexible gasket having a first buffer plane forming a buffer cavity to create an airbag-like structure.

[0012] In some implementations, the flexible gasket is a silicone gasket or a rubber gasket.

[0013] In some embodiments, the high-pressure chamber is located at the center of the pump body, and the low-pressure chamber is arranged around the periphery of the high-pressure chamber;

[0014] Alternatively, the low-pressure chamber can be located at the center of the pump body, and the high-pressure chamber can be arranged around the periphery of the low-pressure chamber.

[0015] In some embodiments, a movable component is provided inside the pump body, which is driven to move up and down by a drive unit, and a pressure-changing chamber is formed between the pump body and the movable component;

[0016] A first through hole is provided between the low-pressure chamber and the transformer chamber, and a first check valve is provided at the position of the first through hole;

[0017] A second through hole is provided between the high-pressure chamber and the transformer chamber, and a second one-way valve is provided at the position of the second through hole;

[0018] The fluid flows out sequentially through the inlet, low-pressure chamber, first through hole, variable pressure chamber, second through hole, high-pressure chamber, and outlet.

[0019] In some embodiments, the first check valve includes a first flexible diaphragm disposed within the transformer chamber;

[0020] The second check valve includes a second flexible diaphragm, which is disposed inside the high-pressure chamber.

[0021] In some embodiments, the first flexible diaphragm is a silicone diaphragm or a rubber diaphragm;

[0022] The second flexible diaphragm is a silicone diaphragm or a rubber diaphragm.

[0023] In some embodiments, the high-pressure chamber includes a first sub-chamber and a second sub-chamber, which are arranged along the axial direction of the pump body;

[0024] The first sub-chamber is located near the low-pressure chamber to form a buffer chamber. A third through hole is provided between the first sub-chamber and the second sub-chamber to connect the two. The second sub-chamber is connected to the outlet.

[0025] In some embodiments, the airbag damping pressure stabilizing pump also includes a pressure relief valve, which is disposed inside the pump body;

[0026] The pressure relief valve includes a valve body and a resilient valve core. The valve body is provided with a fourth through hole communicating with the low-pressure chamber and a fifth through hole communicating with the first sub-chamber. The resilient valve core is disposed between the fourth through hole and the fifth through hole.

[0027] When the fluid pressure in the first chamber is higher than or equal to the predetermined value, the elastic valve core undergoes elastic deformation and is pushed up by the fluid. The fourth through hole and the fifth through hole are connected, and the fluid in the first chamber enters the low-pressure chamber from the fifth through hole and the fourth through hole.

[0028] When the fluid pressure in the first chamber is lower than the predetermined value, the elastic valve core resets and isolates the fourth and fifth through holes.

[0029] In summary, this utility model has the following technical effects:

[0030] The flexible gasket used in this invention contacts the fluid through a second buffer plane. Any position on the second buffer plane of the flexible gasket can undergo elastic deformation under the pressure of the fluid. The flexible gasket has a large contact area with the fluid, resulting in good buffering and pressure stabilization effects. Furthermore, the flexible gasket achieves buffering through the portion with both a first and second buffer plane. The flexible gasket structure is relatively flat, allowing it to be installed and used in relatively narrow spaces, thus exhibiting good versatility. The overall structure of this invention is relatively compact and simple. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the external structure from a first perspective of an embodiment of the present utility model;

[0032] Figure 2 This is a schematic diagram of the external structure from a second perspective of an embodiment of the present utility model;

[0033] Figure 3 This is an embodiment of the present utility model. Figure 2 Schematic cross-sectional view along the AA direction;

[0034] Figure 4 This is an embodiment of the present utility model. Figure 2 sectional view along the BB direction;

[0035] Figure 5 This is a schematic diagram of the external structure of the flexible gasket from a first-view perspective of an embodiment of the present invention.

[0036] Figure 6 This is a schematic diagram of the external structure of the flexible gasket from a second perspective in an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the external structure of the pump body from a first-view perspective of an embodiment of the present utility model.

[0038] Figure 8 This is a schematic diagram of the external structure of the pump body from a second perspective, according to an embodiment of the present utility model.

[0039] Figure 9 This is an embodiment of the present utility model. Figure 1 A schematic diagram of its decomposed structure.

[0040] The meanings of the reference numerals in the attached figures are as follows:

[0041] 10. Pump body;

[0042] 101. Pump body;

[0043] 102. Pump cover;

[0044] 20. Entrance;

[0045] 30. Low-pressure chamber;

[0046] 40. High-pressure chamber;

[0047] 401. First chamber;

[0048] 402. Second chamber;

[0049] 50. Exports;

[0050] 60. Flexible gasket;

[0051] 601. First buffer plane;

[0052] 602, Second Buffer Plane;

[0053] 70. Buffer chamber;

[0054] 80. First connecting part;

[0055] 90. Second connecting part;

[0056] 100. Activity items;

[0057] 110. Drive unit;

[0058] 120. Transformer chamber;

[0059] 130. First through hole;

[0060] 140. First check valve;

[0061] 150. Second through hole;

[0062] 160. Second check valve;

[0063] 170. Third through hole;

[0064] 180. Pressure relief valve;

[0065] 181. Valve body;

[0066] 182. Resilient valve core;

[0067] 183. Fourth through hole;

[0068] 184. Fifth through hole;

[0069] 190. Clearance hole. Detailed Implementation

[0070] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0071] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0072] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0073] See Figures 1-9 This utility model discloses a pneumatic damping pressure stabilizing pump, comprising: a pump body 10, on which an inlet 20, a low-pressure chamber 30, a high-pressure chamber 40, and an outlet 50 are sequentially connected; a flexible gasket 60, inside which the pump body 10 is provided a flexible gasket 60, the flexible gasket 60 having a first buffer plane 601 and a second buffer plane 602, the first buffer plane 601 and the second buffer plane 602 being two opposite surfaces of the flexible gasket 60; a buffer chamber 70 is formed between the pump body 10 and the portion of the flexible gasket 60 having the first buffer plane 601 to form a pneumatic structure, and a high-pressure chamber 40 and / or a low-pressure chamber 30 is formed between the portion of the pump body 10 and the portion of the flexible gasket 60 having the second buffer plane 602, the buffer chamber 70 and the high-pressure chamber 40, and the buffer chamber 70 and the low-pressure chamber 30 being mutually separated.

[0074] The flexible gasket 60 used in this invention comes into contact with the fluid through the second buffer plane 602. Any position of the second buffer plane 602 of the flexible gasket 60 can undergo elastic deformation under the pressure of the fluid. The flexible gasket 60 has a large contact area with the fluid, resulting in good buffering and pressure stabilization effects. Furthermore, the flexible gasket 60 achieves buffering through the portion having the first buffer plane 601 and the second buffer plane 602. The flexible gasket 60 has a relatively flat structure, allowing it to be installed and used in relatively narrow spaces, thus exhibiting good versatility. The overall structure of this invention is relatively compact and simple.

[0075] It should be noted that the flexible gasket 60 can form a high-pressure chamber 40 with the pump body 10, and the second buffer plane 602 of the flexible gasket 60 partially forms the cavity wall of the high-pressure chamber 40. In this case, the fluid in the high-pressure chamber 40 contacts the second buffer plane 602 of the flexible gasket 60, thereby the flexible gasket 60 buffers and stabilizes the fluid in the high-pressure chamber 40; or the flexible gasket 60 can form a low-pressure chamber 30 with the pump body 10, and the second buffer plane 602 of the flexible gasket 60 partially forms the cavity wall of the low-pressure chamber 30. In this case, the fluid in the low-pressure chamber 30 contacts the second buffer plane 602 of the flexible gasket 60, thereby the flexible gasket 60 buffers and stabilizes the fluid in the low-pressure chamber 30. The fluid in the pressure chamber 30 is buffered and stabilized; or the flexible gasket 60 can form a high-pressure chamber 40 and a low-pressure chamber 30 between itself and the pump body 10. A portion of the second buffer plane 602 of the flexible gasket 60 forms part of the cavity wall of the high-pressure chamber 40, and a portion of the second buffer plane 602 of the flexible gasket 60 forms part of the cavity wall of the low-pressure chamber 30. At this time, the fluid in the high-pressure chamber 40 is in contact with a portion of the second buffer plane 602 of the flexible gasket 60, and the fluid in the low-pressure chamber 30 is in contact with a portion of the second buffer plane 602 of the flexible gasket 60. Thus, the flexible gasket 60 buffers and stabilizes the fluid in both the high-pressure chamber 40 and the low-pressure chamber 30.

[0076] Specifically, the fluid can be water or other liquids.

[0077] Since the buffer cavity 70 is an empty cavity containing air or other gases, in order to achieve better buffering and pressure stabilization effects, the sheet portion containing the first buffer plane 601 and the second buffer plane 602 is the main body portion of the flexible gasket 60. Thus, the larger the main body portion, the larger the contact area between the flexible gasket 60 and the fluid. The main body portion of the flexible gasket 60 can elastically deform in the direction of the buffer cavity 70 or the direction of the fluid, following the fluid on the side of the second buffer plane 602.

[0078] Compared to using a flexible bump structure to achieve fluid buffering and pressure stabilization through elastic deformation in the bump direction, the flexible gasket 60 with a buffer airbag structure is more sensitive to the pressure of the fluid and has a better effect on pressure stabilization and buffering.

[0079] In this embodiment of the invention, the pump body 10 is provided with a snap-fit ​​structure for snapping with the flexible gasket 60.

[0080] See Figure 3 , Figure 4 , Figure 5 as well as Figure 6 The edge of the flexible gasket 60 is provided with a first snap-fit ​​portion 80, and the pump body 10 is provided with a second snap-fit ​​portion 90 for snapping with the first snap-fit ​​portion 80. The first snap-fit ​​portion 80 and the second snap-fit ​​portion 90 are snapped together.

[0081] In this embodiment of the utility model, the pump body 10 includes a pump body body 101 and a pump cover 102 connected to each other. The pump body body 101 and the portion of the flexible gasket 60 having a first buffer plane 601 form a buffer cavity 70 to form an airbag structure.

[0082] Thus, the pump body 10 is made separately from the pump body main body 101 and the pump cover 102 and then locked together with screws. The processing and assembly of the pump body 10 are relatively convenient, and it is also easier to assemble other structures set inside the pump body 10, such as the flexible gasket 60 and the first one-way valve 140, the second one-way valve 160, the pressure relief valve 180, etc. mentioned below. When installing the flexible gasket 60, the flexible gasket 60 is snapped onto the pump body main body 101, and then the pump cover 102 is fastened onto the pump body main body 101 and the flexible gasket 60. The flexible gasket 60 is sandwiched between the pump body main body 101 and the pump cover 102, which helps to improve the installation stability of the flexible gasket 60 and prevent the flexible gasket 60 from falling off the pump body 10 when it is elastically deformed under the action of fluid pressure. In addition, the flexible gasket 60 reduces the impact of fluid on the pump cover 102 and reduces the vibration of the pump cover 102.

[0083] Because a buffer cavity 70 is formed between the flexible gasket 60 and the pump cover 102 to form a buffer airbag structure, the flexible gasket 60 has a recess or the pump cover 102 has a recess to form the buffer cavity 70; see reference Figure 3 , Figure 5 as well as Figure 6 When the flexible gasket 60 has a recess, the first buffer plane 601 and the second buffer plane 602 can be disposed on opposite sides of the bottom wall of the recess, so that the flexible gasket 60 can achieve buffering and pressure stabilization through elastic deformation when subjected to fluid pressure.

[0084] In this embodiment of the invention, the flexible gasket 60 is a silicone gasket or a rubber gasket.

[0085] In this embodiment of the utility model, the high-pressure chamber 40 is located at the center of the pump body 10, and the low-pressure chamber 30 is arranged around the periphery of the high-pressure chamber 40; or, the low-pressure chamber 30 is located at the center of the pump body 10, and the high-pressure chamber 40 is arranged around the periphery of the low-pressure chamber 30.

[0086] In this embodiment of the utility model, see Figure 3 , Figure 4 , Figure 7 as well as Figure 8 The inlet 20 and outlet 50 are respectively located on both sides of the pump body 10. The flexible gasket 60 is located near the top of the pump body 10. The high-pressure chamber 40 is located at the center of the pump body 10, and the low-pressure chamber 30 is arranged around the periphery of the high-pressure chamber 40. The flexible gasket 60 and the pump body 10 form the high-pressure chamber 40. The second buffer plane 602 of the flexible gasket 60 partially forms part of the cavity wall of the high-pressure chamber 40. At this time, the fluid in the high-pressure chamber 40 contacts the second buffer plane 602 of the flexible gasket 60, so that the flexible gasket 60 buffers and stabilizes the fluid in the high-pressure chamber 40. When the fluid enters the high-pressure chamber 40 at the center of the pump body 10 from one side through the inlet 20 and the low-pressure chamber 30, the fluid flows out from the outlet 50 on the other side of the pump body 10 after passing through the flexible gasket 60. In this way, the contact area between the fluid and the flexible gasket 60 is increased, thereby improving the buffering and stabilizing effect.

[0087] In this embodiment of the present invention, a movable component 100 is provided inside the pump body 10. The movable component 100 is driven to move up and down by a drive unit 110. A pressure-transforming chamber 120 is formed between the pump body 10 and the movable component 100. A first through hole 130 is provided between the low-pressure chamber 30 and the pressure-transforming chamber 120. A first one-way valve 140 is provided at the position of the first through hole 130. A second through hole 150 is provided between the high-pressure chamber 40 and the pressure-transforming chamber 120. A second one-way valve 160 is provided at the position of the second through hole 150. Fluid flows out sequentially through the inlet 20, the low-pressure chamber 30, the first through hole 130, the pressure-transforming chamber 120, the second through hole 150, the high-pressure chamber 40, and the outlet 50.

[0088] Specifically, the pump body 10 also includes a partition, on which the first through hole 130, the first one-way valve 140, the second through hole 150 and the second one-way valve 160 are all disposed, thereby reducing assembly difficulty and production cost.

[0089] It should be noted that there can be one or more transformer cavities 120; the moving part 100 can be a flexible or rigid structure.

[0090] When multiple pressure-changing chambers 120 are provided, the multiple pressure-changing chambers 120 are radially distributed along the central axis of the pump body 10. Multiple first through holes 130 and second through holes 150 are provided. Each pressure-changing chamber 120 is provided with at least one first through hole 130 and at least one second through hole 150. The volume of each pressure-changing chamber 120 changes alternately. By setting multiple pressure-changing chambers 120 to alternately increase pressure, the pulsating characteristics of the fluid are reduced. The drive unit 110 includes a drive element, an eccentric wheel and a swing frame. The drive element drives the swing frame to move up and down through the eccentric wheel. The swing frame is fixedly connected to the movable part 100. Multiple fixed points are provided between the swing frame and the movable part 100. Each pressure-changing chamber 120 has at least one fixed point. The driving element is a motor. The use of the driving element, eccentric wheel and swing frame to make up and down movement is existing technology and will not be described in detail here. Of course, multiple cylinders can also be used to drive the moving part 100 to move up and down alternately, so that the moving part 100 can increase or decrease the pressure chamber 120 through movement. Multiple pressure chambers 120 pump the fluid in the low pressure chamber 30 into the high pressure chamber 40 through the alternating movement of the moving part 100.

[0091] Because of the first one-way valve 140, the fluid enters the pressure-changing chamber 120 from the low-pressure chamber 30 through the first through hole 130; because of the second one-way valve 160, the fluid enters the high-pressure chamber 40 from the pressure-changing chamber 120 through the second through hole 150, thereby achieving directional flow of the fluid and achieving a better pressurization effect on the fluid.

[0092] In this embodiment of the present invention, the first one-way valve 140 includes a first flexible diaphragm disposed in the transformer chamber 120; the second one-way valve 160 includes a second flexible diaphragm disposed in the high-pressure chamber 40.

[0093] In use, the first flexible diaphragm elastically bends and deforms according to the changes in volume and pressure of the transformer chamber 120, thereby opening and closing the first through hole 130. The second flexible diaphragm elastically bends and deforms according to the changes in volume and pressure of the transformer chamber 120, thereby opening and closing the second through hole 150.

[0094] Specifically as follows:

[0095] When the actual volume of one of the transformer chambers 120 increases, the first one-way valve 140 opens the first through hole 130, and the second one-way valve 160 closes the second through hole 150, allowing fluid to enter the transformer chamber 120 from the low-pressure chamber 30; then the actual volume of the transformer chamber 120 decreases, the first one-way valve 140 closes the first through hole 130, and the second one-way valve 160 opens the second through hole 150, allowing fluid to enter the high-pressure chamber 40 from the transformer chamber 120.

[0096] In this embodiment of the invention, the first flexible diaphragm is a silicone diaphragm or a rubber diaphragm; the second flexible diaphragm is a silicone diaphragm or a rubber diaphragm.

[0097] In this embodiment of the present invention, the high-pressure chamber 40 includes a first sub-chamber 401 and a second sub-chamber 402, which are arranged along the axial direction of the pump body 10. The first sub-chamber 401 is arranged near the low-pressure chamber 30 to form a buffer chamber. A third through hole 170 is provided between the first sub-chamber 401 and the second sub-chamber 402 to connect the two. The second sub-chamber 402 is connected to the outlet 50.

[0098] See Figure 4 In this embodiment of the present invention, the airbag-type damping pressure stabilizing pump further includes a pressure relief valve 180, which is disposed inside the pump body 10. The pressure relief valve 180 includes a valve body 181 and an elastic valve core 182. The valve body 181 is provided with a fourth through hole 183 communicating with the low-pressure chamber 30 and a fifth through hole 184 communicating with the first sub-chamber 401. The elastic valve core 182 is disposed between the fourth through hole 183 and the fifth through hole 184. When the fluid pressure in the first sub-chamber 401 is higher than or equal to a predetermined value, the elastic valve core 182 undergoes elastic deformation and is lifted by the fluid. The fourth through hole 183 and the fifth through hole 184 then communicate, and the fluid in the first sub-chamber 401 enters the low-pressure chamber 30 through the fifth through hole 184 and the fourth through hole 183. When the fluid pressure in the first sub-chamber 401 is lower than the predetermined value, the elastic valve core 182 resets and disconnects the fourth through hole 183 and the fifth through hole 184.

[0099] The pressure relief valve 180 is installed to prevent excessive pressure inside the high-pressure chamber 40 and to release pressure in a timely manner.

[0100] It should be noted that in order to adapt to the structure of the pump body 10 and other components such as the pressure relief valve 180, the flexible gasket 60 needs to have a clearance hole 190. The setting of the clearance hole 190 does not affect its elastic deformation effect under the action of fluid pressure or has little effect.

[0101] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A pneumatic damping pressure stabilizing pump, characterized in that, include: A pump body, wherein an inlet, a low-pressure chamber, a high-pressure chamber and an outlet are sequentially connected on the pump body; A flexible gasket is provided inside the pump body. The flexible gasket has a first buffer plane and a second buffer plane, which are two opposite sides of the flexible gasket. The pump body and the portion of the flexible pad having the first buffer plane form a buffer cavity to form an airbag structure. The portion of the pump body and the portion of the flexible pad having the second buffer plane form the high-pressure cavity and / or the low-pressure cavity. The buffer cavity and the high-pressure cavity, and the buffer cavity and the low-pressure cavity are separated from each other.

2. The airbag-type damping pressure stabilizing pump according to claim 1, characterized in that: The pump body is provided with a snap-fit ​​structure for engaging with the flexible gasket.

3. The airbag-type damping pressure stabilizing pump according to claim 1, characterized in that: The pump body includes a pump body main body and a pump cover that are connected to each other. The pump body main body and the portion of the flexible gasket with a first buffer plane form a buffer cavity to form an airbag structure.

4. The airbag-type damping pressure stabilizing pump according to claim 1, characterized in that: The flexible gasket is a silicone gasket or a rubber gasket.

5. The airbag-type damping pressure stabilizing pump according to claim 1, characterized in that: The high-pressure chamber is located at the center of the pump body, and the low-pressure chamber is arranged around the periphery of the high-pressure chamber; Alternatively, the low-pressure chamber may be located at the center of the pump body, and the high-pressure chamber may be arranged around the periphery of the low-pressure chamber.

6. The airbag-type damping pressure stabilizing pump according to any one of claims 1-5, characterized in that: The pump body has a movable component inside, which is driven to move up and down by a drive unit, and a pressure-changing chamber is formed between the pump body and the movable component. A first through hole is provided between the low-pressure chamber and the transformer chamber, and a first one-way valve is provided at the position of the first through hole; A second through hole is provided between the high-pressure chamber and the transformer chamber, and a second one-way valve is provided at the position of the second through hole; The fluid flows out sequentially through the inlet, the low-pressure chamber, the first through hole, the variable pressure chamber, the second through hole, the high-pressure chamber, and the outlet.

7. The airbag-type damping pressure stabilizing pump according to claim 6, characterized in that: The first one-way valve includes a first flexible diaphragm, which is disposed within the transformer chamber; The second one-way valve includes a second flexible diaphragm disposed within the high-pressure chamber.

8. The airbag-type damping pressure stabilizing pump according to claim 7, characterized in that: The first flexible diaphragm is a silicone diaphragm or a rubber diaphragm; The second flexible diaphragm is a silicone diaphragm or a rubber diaphragm.

9. The airbag-type damping pressure stabilizing pump according to any one of claims 1-5, characterized in that: The high-pressure chamber includes a first sub-chamber and a second sub-chamber, which are arranged along the axial direction of the pump body. The first sub-cavity is positioned close to the low-pressure cavity to form a buffer cavity. A third through hole is provided between the first sub-cavity and the second sub-cavity to connect the two. The second sub-cavity is connected to the outlet.

10. The airbag-type damping pressure stabilizing pump according to claim 9, characterized in that: The airbag-type damping pressure stabilizing pump also includes a pressure relief valve, which is located inside the pump body; The pressure relief valve includes a valve body and a resilient valve core. The valve body is provided with a fourth through hole communicating with the low-pressure chamber and a fifth through hole communicating with the first sub-chamber. The resilient valve core is disposed between the fourth through hole and the fifth through hole. When the fluid pressure in the first compartment is higher than or equal to a predetermined value, the elastic valve core undergoes elastic deformation and is lifted up by the fluid. The fourth through hole communicates with the fifth through hole, and the fluid in the first compartment enters the low-pressure chamber through the fifth through hole and the fourth through hole. When the fluid pressure in the first compartment is lower than a predetermined value, the elastic valve core resets and disconnects the fourth through hole from the fifth through hole.

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