Novel air bag pump
By adopting a new one-way valve structure in the airbag pump, and utilizing arc-shaped concave sealing elements and buffer guide components, the problems of valve ball wear and noise have been solved, achieving stability in sealing and flow control, and facilitating maintenance.
Patent Information
- Application Number
- CN202423149612.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The existing airbag pumps have a one-way valve that is integrally molded with the pump body, which leads to frequent and severe friction and wear between the valve ball and the chamber, resulting in noise, impurities, and vibration, and making maintenance difficult.
The new one-way valve structure includes a valve seat, a valve ball, and a seal. The seal has an arc-shaped concave surface, which, together with the buffer guide component, ensures that the valve ball returns to its original position in time, reducing wear and noise and improving sealing performance.
It effectively avoids violent collisions of the valve ball, reduces wear and noise, ensures sealing, facilitates inspection and maintenance, and achieves precise flow control.
Smart Images
Figure CN223536510U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of liquid transfer pump technology, and specifically relates to a novel airbag pump. Background Technology
[0002] In the semiconductor industry, pumps such as air-cushion pumps are commonly needed for transporting highly corrosive liquids like acids and alkalis. Air-cushion pumps are indispensable equipment in the semiconductor manufacturing supply chain and can also be used to transport high-purity fluids in other fields. An air-cushion pump uses compressed air as power and relies on a variable-volume air-cushion within the pump cylinder to alternately increase and decrease its working volume to transport special liquids. The pump chamber of the air-cushion pump is divided into two working chambers, each consisting of a gas phase working chamber and a liquid phase working chamber. After compressed air enters the gas phase working chamber, the compressed air-cushion deforms and moves. A reversing valve controls the compressed air to sequentially enter the two gas phase working chambers. The alternating suction and discharge of liquid in the liquid phase working chamber achieves the transport of the liquid.
[0003] In existing technology, the check valve of the airbag pump is integrally formed with the pump body and relies on gravity to achieve sealing. However, during use, the airbag pump typically controls the opening and closing of the chamber by the up-and-down sliding of the valve ball. Due to frequent friction between the valve seat and the valve ball, the wear is quite severe after long-term use, and frequent replacement increases production costs and reduces production efficiency. When the valve ball rises or falls, it collides and rebounds with the chamber, causing vibration in the pump body, which can cause wear, especially at the connection points. Repeated collisions can lead to the generation of impurities and contaminate the liquid. At the same time, the collisions and rebounds cause the valve ball to rebound randomly, resulting in delayed return, large liquid backflow, and significant noise pollution, which can affect the health of workers. Furthermore, when some components of the check valve are damaged, repair is difficult. Utility Model Content
[0004] To address the aforementioned issues, this utility model proposes a novel airbag pump that utilizes a novel one-way valve. This one-way valve has a simple structure, is easy to install, effectively ensures the sealing of the valve ball and valve seat, avoids violent collisions of the valve ball that generate impurities and noise, prevents repeated rebounds of the valve ball, reduces wear, and ensures timely return of the valve ball to its original position, which is beneficial for precise flow control.
[0005] The technical solution of this utility model is as follows:
[0006] A novel airbag pump includes an airbag and a pump body. The pump body is connected to an outlet pipe and an inlet pipe. A one-way valve is installed on the pump body. The one-way valve includes a valve seat and a valve ball. A sealing element is provided between the valve seat and the valve ball. An arc-shaped concave surface is provided at the end of the sealing element near the valve ball, and the arc-shaped concave surface is adapted to the valve ball. A buffer guide component is connected to the valve ball at a position away from the sealing element.
[0007] Preferably, the end of the valve seat near the valve ball is also provided with an arc-shaped concave surface to better fit the valve ball and ensure a sealing effect.
[0008] Preferably, the buffer guide component includes a first support rod, a second support rod, and an elastic body. The buffer guide component can both buffer the valve ball and allow the valve ball to move along a specific path.
[0009] More preferably, the first support rod is connected to the second support rod, the second support rod is connected to the elastic body, and the second support rod is connected to the valve ball through the elastic body.
[0010] More preferably, the second support rod is positioned at the middle of the first support rod.
[0011] More preferably, the center of the valve ball, the center of the elastic body, and the centers of the first support rod and the second support rod are all on the same straight line, so that the valve ball can move better along a specific path, avoiding collisions and rebounds, and effectively avoiding vibrations, impurities and noise.
[0012] More preferably, the elastic body is a spring.
[0013] Preferably, the pump body is connected to a first connector and a second connector in sequence. The second connector is connected to the inlet pipe or the outlet pipe. Fasteners are provided at the connection between the first connector and the second connector. A check valve is provided at the connection between the first connector and the second connector. The first connector, the second connector, and the fasteners are to ensure the sealing between the housing and the inlet pipe and the delivery pipe, and also to facilitate inspection, repair, and maintenance if the check valve malfunctions.
[0014] More preferably, when the second connector is connected to the liquid inlet pipe, the valve seat is connected to the second connector, and the buffer guide component is connected to the first connector.
[0015] More preferably, when the second connector is connected to the liquid outlet pipe, the valve seat is connected to the first connector, and the buffer guide component is connected to the second connector.
[0016] This utility model discloses a novel airbag pump, which includes a special one-way valve. The one-way valve has a sealing element with an arc-shaped concave surface. This design improves the sealing effect between the valve ball and the valve seat. Even if the sealing element is worn, the contact area between the valve ball and the sealing element increases as the valve ball moves downwards and the plane diameter at the contact point increases, resulting in a better seal. The arc-shaped concave surface also effectively ensures that the valve ball lands precisely on the concave surface, preventing rebound and allowing the valve ball to return to its original position promptly. A buffer guide component is also provided above the valve ball, supported by a first support rod, a second support rod, and an elastic body. The combination of the valve ball and the elastic body serves both as a buffer and a guide, preventing violent collisions between the valve ball and the equipment, effectively avoiding the generation of impurities and noise, reducing vibration and wear, and ensuring that the valve ball always moves in the direction of the second support rod and the elastic body. This ensures that the valve ball returns to its original position in a timely manner, avoiding the problem of excessive liquid flow caused by failure to return to its original position in time, which is conducive to precise flow control. The setting of the first connector, the second connector and the fasteners not only helps to ensure the stable and sealed connection between the inlet pipe, the delivery pipe and the pump body, but also facilitates inspection and maintenance when the check valve malfunctions.
[0017] This utility model provides a novel airbag pump that uses a novel one-way valve. The one-way valve has a simple structure, is easy to install, effectively ensures the sealing of the valve ball and valve seat, avoids violent collision of the valve ball, avoids the generation of impurities and noise, avoids repeated rebound of the valve ball, reduces wear, and ensures timely return of the valve ball, which is conducive to precise flow control. In addition, it facilitates inspection and maintenance after the one-way valve malfunctions. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the one-way valve near the liquid outlet pipe of this utility model.
[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0021] In the diagram, 1 is the valve seat, 2 is the seal, 3 is the elastomer, 4 is the second support rod, 5 is the fastener, 6 is the first support rod, 7 is the second connector, 8 is the valve ball, 9 is the first connector, 10 is the outlet pipe, 11 is the inlet pipe, and 12 is the pump body. Detailed Implementation
[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection claimed in this application.
[0023] like Figure 1-3 As shown, a novel airbag pump includes an airbag and a pump body 12. The pump body 12 is connected to an outlet pipe 10 and an inlet pipe 11, respectively. A one-way valve is provided on the pump body 12. The one-way valve includes a valve seat 1 and a valve ball 8. A sealing element 2 is provided between the valve seat 1 and the valve ball 8. An arc-shaped concave surface is provided at the end of the sealing element 2 near the valve ball 8, and the arc-shaped concave surface is adapted to the valve ball 8. A buffer guide component is connected to the position of the valve ball 8 away from the sealing element 2.
[0024] In another embodiment, the seal 2 and the valve seat 1 are bonded together, or other existing connection methods such as snap-fit can be used. Specifically, the seal 2 can be a rubber gasket. The seal 2 is in contact with the pump body 12 (or the first connector 9 or the second connector 7) without any gaps.
[0025] In another embodiment, the valve seat 1 is also provided with an arc-shaped concave surface at one end near the valve ball 8, which is adapted to the shape of the valve ball 8. When the wear between the seal 2 and the valve ball 8 is very severe, the valve ball 8 contacts the valve seat 1. At this time, the arc-shaped concave surface on the valve seat 1 is better adapted to the valve ball 8, ensuring the sealing effect.
[0026] In another embodiment, the buffer guide component includes a first support rod 6, a second support rod 4, and an elastic body 3. The buffer guide component can both buffer the valve ball 8 and allow the valve ball 8 to move along a specific path. The first support rod 6 is connected to the second support rod 4, and the second support rod 4 is connected to the elastic body 3. The second support rod 4 and the valve ball 8 are connected through the elastic body 3. The second support rod 4 is located in the middle of the first support rod 6. The center of the valve ball 8, the center of the elastic body 3, and the centers of the first support rod 6 and the second support rod 4 are all on the same straight line, which allows the valve ball 8 to move better along the specific path, avoiding collisions and rebounds, and effectively preventing vibrations, impurities, and noise. The elastic body 3 is a spring.
[0027] In this invention, the spring can be in a compressed or uncompressed state when the valve ball 8 contacts the seal 2. Before the valve ball 8 contacts the seal 2, the spring can always exert a force on the valve ball 8 towards the valve seat 1, which is beneficial for the valve ball 8 to return to its original position, better for sealing, and for the one-way valve to close. Moreover, when the one-way valve is opened, the valve ball 8 will not rise violently, reducing collisions, wear, and noise. When the valve ball 8 contacts the seal 2, the spring can also be in a stretched state. At this time, the weight of the valve ball 8 is greater than the elastic force of the spring. Even when the spring is in a stretched state, the valve ball 8 can still contact the seal 2 to achieve sealing and close the one-way valve. This makes it easier for the one-way valve to open and close. When the valve ball 8 rises, due to the cooperation of the spring, the second support rod 4, and the first support rod 6, the valve ball 8 will not rebound or collide randomly, but will rise along a certain track, reducing collisions, wear, and noise.
[0028] In another embodiment, the pump body 12 is sequentially connected to a first connector 9 and a second connector 7. The second connector 7 is connected to the inlet pipe 11 or the outlet pipe 10. A fastener 5 is provided at the connection between the first connector 9 and the second connector 7. The fastener 5 can be a nut, which is fitted onto the connection between the first connector 9 and the second connector 7. The fastener 5 is threaded to the first connector 9. A one-way valve is provided at the connection between the first connector 9 and the second connector 7. The first connector 9, the second connector 7, and the fastener 5 are to ensure the sealing between the housing and the inlet pipe 11 and the infusion pipe, and also to facilitate inspection, repair, and maintenance after the one-way valve malfunctions. When the second connector 7 is connected to the inlet pipe 11, the valve seat 1 is connected to the second connector 7, and the buffer guide component is connected to the first connector 9. When the second connector 7 is connected to the outlet pipe 10, the valve seat 1 is connected to the first connector 9, and the buffer guide component is connected to the second connector 7.
[0029] In another embodiment, when the valve seat 1 is connected to the first connector 9 or the second connector 7, other existing connection methods such as welding, bonding, or integral molding can be used. When the first support rod 6 is connected to the first connector 9 or the second connector 7, other existing connection methods such as welding, bonding, or integral molding can be used. Other existing connection methods such as welding, bonding, or integral molding can be used between the first support rod 6 and the second support rod 4, the second support rod 4 and the spring, and the spring and the valve ball 8.
[0030] Working principle: Liquid (fluid) flows through the inlet pipe 11 and the second connector 7. The valve ball 8 rises and moves away from the seal 2. At this time, the one-way valve is open. The liquid flows through the second connector 7, the one-way valve, and the first connector 9, and flows into the working chamber of the new type of airbag pump. After a suitable amount of liquid flows in, the valve ball 8 falls on the seal 2 of the one-way valve, achieving a seal. At this time, the one-way valve is closed, and the delivery of liquid to the working chamber is suspended. The valve ball 8 of the one-way valve near the outlet pipe 10 rises and moves away from the seal 2. At this time, the one-way valve is open. The liquid flows from the working chamber through the first connector 9, the one-way valve, and the second connector 7, and finally exits through the outlet pipe 10. The valve ball 8 falls on the seal 2 of the one-way valve, achieving a seal. At this time, the one-way valve is closed, and the liquid discharge is suspended. This cycle is repeated to achieve liquid delivery.
[0031] This utility model discloses a novel airbag pump, which includes a special one-way valve. The one-way valve is equipped with a sealing element 2, and the arc-shaped concave surface on the sealing element 2 creates a better sealing effect between the valve ball 8 and the valve seat 1. Even if the sealing element 2 is worn, as the diameter of the plane at the contact point between the valve ball 8 and the sealing element 2 increases towards the bottom, the contact area between the valve ball 8 and the sealing element 2 increases, resulting in a better seal. The arc-shaped concave surface also effectively ensures that the valve ball falls precisely into the concave position, preventing rebound and allowing the valve ball 8 to return to its original position promptly. A buffer guide component is also provided above the valve ball 8, via a first support rod 6 and a second support rod... The cooperation between the second support rod 4 and the elastic body 3 serves both as a buffer and a guide, preventing violent collisions between the valve ball 8 and the equipment, effectively avoiding the generation of impurities and noise, reducing vibration and wear, and ensuring that the valve ball 8 always moves in the direction of the second support rod 4 and the elastic body 3, thus ensuring the timely return of the valve ball 8 to its original position and avoiding the problem of excessive liquid flow caused by failure to return to its original position in time; the setting of the first connector 9, the second connector 7 and the fastener 5 not only helps to ensure the stable and sealed connection between the inlet pipe 11, the delivery pipe and the pump body 12, but also facilitates inspection and maintenance when the check valve malfunctions.
[0032] This utility model provides a novel airbag pump that uses a novel one-way valve. The one-way valve has a simple structure and is easy to install. It effectively ensures the sealing of the valve ball 8 and the valve seat 1, avoids violent collisions of the valve ball 8, which would generate impurities and noise, avoids repeated rebounds of the valve ball 8, reduces wear, and ensures that the valve ball 8 returns to its original position in a timely manner, which is conducive to precise flow control. In addition, it facilitates inspection and maintenance after the one-way valve malfunctions.
Claims
1. A novel airbag pump, comprising an airbag and a pump body (12), wherein the pump body (12) is connected to an outlet pipe (10) and an inlet pipe (11) respectively, and a one-way valve is provided on the pump body (12), the one-way valve comprising a valve seat (1) and a valve ball (8), characterized in that: A sealing element (2) is provided between the valve seat (1) and the valve ball (8). The end of the sealing element (2) near the valve ball (8) is provided with an arc-shaped concave surface, which is adapted to the valve ball (8). A buffer guide component is connected to the position of the valve ball (8) away from the sealing element (2).
2. The novel airbag pump according to claim 1, characterized in that: The valve seat (1) is also provided with an arc-shaped concave surface at one end near the valve ball (8).
3. The novel airbag pump according to claim 1, characterized in that: The buffer guide component includes a first support rod (6), a second support rod (4), and an elastic body (3).
4. The novel airbag pump according to claim 3, characterized in that: The first support rod (6) is connected to the second support rod (4), the second support rod (4) is connected to the elastic body (3), and the second support rod (4) is connected to the valve ball (8) through the elastic body (3).
5. A novel airbag pump according to claim 4, characterized in that: The second support rod (4) is positioned in the middle of the first support rod (6).
6. A novel airbag pump according to claim 4, characterized in that: The center of the valve ball (8), the center of the elastic body (3), the center of the first support rod (6) and the center of the second support rod (4) are all on the same straight line.
7. A novel airbag pump according to claim 3, characterized in that: The elastic body (3) is a spring.
8. A novel airbag pump according to claim 1, characterized in that: The pump body (12) is connected in sequence to the first connector (9) and the second connector (7). The second connector (7) is connected to the inlet pipe (11) or the outlet pipe (10). A fastener (5) is provided at the connection between the first connector (9) and the second connector (7). A one-way valve is provided at the connection between the first connector (9) and the second connector (7).
9. A novel airbag pump according to claim 8, characterized in that: When the second connector (7) is connected to the inlet pipe (11), the valve seat (1) is connected to the second connector (7), and the buffer guide component is connected to the first connector (9).
10. A novel airbag pump according to claim 8, characterized in that: When the second connector (7) is connected to the liquid outlet pipe (10), the valve seat (1) is connected to the first connector (9), and the buffer guide component is connected to the second connector (7).