A low-noise piston air pump

Abstract

This utility model relates to the field of piston air pump technology, specifically a low-noise piston air pump, including a pump body and a pump cover. The pump cover has an air inlet and an air outlet. The pump body contains a piston that can reciprocate within the pump body. An inlet chamber and an exhaust chamber are formed by tortuous flow channels and are symmetrically distributed within the pump cover, respectively communicating with the air inlet and exhaust outlet. A one-way valve seat is disposed between the pump body and the pump cover. An inlet one-way valve plate is installed on the bottom surface of the one-way valve seat, and an exhaust one-way valve plate is installed on the top surface of the one-way valve seat. The one-way valve seat has an inlet through hole and an outlet through hole corresponding to the inlet and exhaust one-way valve plates, respectively. This low-noise piston air pump features a special noise reduction design for the gas path, significantly reducing the operating noise of the piston air pump. The use of a buffer plate effectively reduces the impact noise between the valve plate and the valve seat.

Description

Technical Field

[0001] This utility model relates to the field of piston air pump technology, specifically a low-noise piston air pump. Background Technology

[0002] An air pump is an industrial device that generates air pressure by compressing air. It is mainly divided into two categories: manual air pumps and electric air pumps. Electric air pumps generally use a motor to drive a piston or air chamber in reciprocating motion, and work with a one-way valve to achieve directional gas delivery.

[0003] Traditional piston air pumps generally suffer from high operating noise. While external silencers can reduce noise to some extent, they also increase the external size, limiting their application in situations where noise requirements are high or installation space is limited. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a low-noise piston air pump, which incorporates a special noise reduction design for the gas path, significantly reducing the pump's operating noise.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-noise piston air pump, comprising a pump body and a pump cover, wherein the pump cover has an air inlet and an air outlet, and the pump body contains a piston that can reciprocate within the pump body;

[0006] The intake chamber and exhaust chamber are formed by tortuous flow channels and are symmetrically distributed in the pump cover. They are set in the pump cover and are respectively connected to the intake port and the exhaust port.

[0007] A one-way valve seat is disposed between the pump body and the pump cover. An inlet one-way valve plate is installed on the bottom surface of the one-way valve seat, and an exhaust one-way valve plate is installed on the top surface of the one-way valve seat. The one-way valve seat has an inlet through hole and an outlet through hole corresponding to the inlet one-way valve plate and the exhaust one-way valve plate, respectively.

[0008] During the suction process, gas is drawn in through the inlet on the pump cover, enters the intake chamber formed by the tortuous flow channel, and pushes the right end of the intake one-way valve plate of the one-way valve seat downward, thus entering the lower part of the pump body through the intake through hole. During the discharge process, the gas in the lower part of the pump body is squeezed by the piston, and pushes the left end of the exhaust one-way valve plate of the one-way valve seat to rise, thus entering the exhaust chamber formed by the tortuous flow channel through the exhaust through hole, and finally being discharged from the exhaust port on the pump cover. This air pump has a special noise reduction design for the gas path, which greatly reduces the operating noise of the piston air pump.

[0009] Furthermore, the intake one-way valve plate is installed on the bottom surface of the one-way valve seat by a first screw, and the exhaust one-way valve plate is installed on the top surface of the one-way valve seat by a second screw. One end of the intake one-way valve plate is installed on the bottom surface of the one-way valve seat by a first screw, and the other end covers the intake through hole. One end of the exhaust one-way valve plate is installed on the top surface of the one-way valve seat by a second screw, and the other end covers the exhaust through hole.

[0010] Furthermore, an intake one-way valve buffer plate is installed between the intake one-way valve plate and the one-way valve seat, and an exhaust one-way valve buffer plate is installed between the exhaust one-way valve plate and the one-way valve seat. The impact noise between the valve plate and the valve seat can be effectively reduced by the buffer plates.

[0011] Furthermore, a soundproof cover is installed on the one-way valve seat, and the exhaust one-way valve plate and the outlet one-way valve buffer plate are located inside the soundproof cover to reflect and reduce the noise generated by the exhaust one-way valve when it is working.

[0012] Furthermore, the bottom and sides of the soundproof cover are missing to facilitate gas exhaust.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This low-noise piston air pump draws gas in through the inlet on the pump cover during suction, into the intake chamber formed by a tortuous flow channel, and pushes the right end of the intake one-way valve plate of the one-way valve seat downward, thus entering the lower part of the pump body through the intake through hole. During discharge, the gas in the lower part of the pump body is squeezed by the piston, pushing the left end of the exhaust one-way valve plate of the one-way valve seat to rise, thus entering the exhaust chamber formed by the tortuous flow channel through the exhaust through hole, and finally being discharged from the exhaust port on the pump cover. This air pump has a special noise reduction design for the gas path, which greatly reduces the operating noise of the piston air pump.

[0015] This low-noise piston air pump effectively reduces the impact noise between the valve plate and the valve seat by using a buffer plate; it can also reflect and reduce the noise generated by the exhaust check valve when it is working by installing a soundproof cover on the one-way valve seat. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] In the diagram: 1. Pump body; 2. Pump cover; 3. Air inlet; 4. Air outlet; 5. Piston; 6. Air inlet chamber; 7. Air outlet chamber; 8. One-way valve seat; 9. Air inlet one-way valve plate; 10. Air outlet one-way valve plate; 11. Air inlet through hole; 12. Air outlet through hole; 13. First screw; 14. Second screw; 15. Air inlet one-way valve buffer plate; 16. Air outlet one-way valve buffer plate; 17. Soundproof cover. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 This embodiment of a low-noise piston air pump includes a pump body 1 and a pump cover 2. The pump cover 2 has an air inlet 3 and an exhaust port 4. The pump body 1 contains a piston 5, which can reciprocate within the pump body 1 to achieve gas suction and discharge. When the piston 5 reciprocates, it is usually driven by a motor. The rotational motion of the motor is converted into the linear reciprocating motion of the piston 5 through a crank-slider mechanism or cam mechanism or other structure set in the bottom of the pump body 1. Since the above driving method is a known prior art, it will not be described in detail here.

[0020] To reduce the noise of the piston air pump during operation, a one-way valve seat 8 is installed between the pump body 1 and the pump cover 2. The pump cover 2 also has an intake chamber 6 connected to the intake port 3 and an exhaust chamber 7 connected to the exhaust port 4. The intake chamber 6 and the exhaust chamber 7 are composed of tortuous flow channels and are symmetrically distributed in the pump cover 2. An intake one-way valve plate 9 is installed on the bottom surface of the one-way valve seat 8 by a first screw 13, and an exhaust one-way valve plate 10 is installed on the top surface of the one-way valve seat 8 by a second screw 14. The one-way valve seat 8 has an intake through hole 11 and an exhaust through hole 12 corresponding to the intake one-way valve plate 9 and the exhaust one-way valve plate 10, respectively.

[0021] One end of the intake one-way valve plate 9 is installed on the bottom surface of the one-way valve seat 8 by the first screw 13, and the other end covers the intake hole 11. One end of the exhaust one-way valve plate 10 is installed on the top surface of the one-way valve seat 8 by the second screw 14, and the other end covers the exhaust hole 12. This prevents the gas from being discharged from the intake hole 11 after it enters the lower part of the pump body 1. The same applies when the gas is discharged.

[0022] During the suction process, gas is drawn in through the air inlet 3 on the pump cover 2, enters the air inlet chamber 6 which is composed of a tortuous flow channel, and pushes the right end of the air inlet one-way valve plate 9 of the one-way valve seat 8 to flip down, thus entering the lower part of the pump body 1 through the air inlet hole 11. During the discharge process, the gas in the lower part of the pump body 1 is squeezed by the piston 5, and pushes the left end of the exhaust one-way valve plate 10 of the one-way valve seat 8 to lift up, thus entering the exhaust chamber 7 composed of a tortuous flow channel through the exhaust hole, and finally being discharged from the exhaust port 4 on the pump cover 2. This air pump has a special noise reduction design for the gas path, which greatly reduces the operating noise of the piston air pump.

[0023] Since the intake one-way valve plate 9 and the exhaust one-way valve plate 10 may collide with the one-way valve seat 8 during the reset process, this piston air pump has an intake one-way valve buffer plate 15 installed between the intake one-way valve plate 9 and the one-way valve seat 8, and an exhaust one-way valve buffer plate 16 installed between the exhaust one-way valve plate 10 and the one-way valve seat 8. The impact noise between the valve plate and the valve seat can be effectively reduced by the buffer plates.

[0024] In addition, to further reduce the impact of noise, a soundproof cover 17 can be installed on the one-way valve seat 8, with the exhaust one-way valve plate 10 and the outlet one-way valve buffer plate 16 located inside the soundproof cover 17. This reflects and reduces the noise generated by the operation of the exhaust one-way valve.

[0025] Furthermore, the bottom and sides of the soundproof cover 17 are missing to facilitate gas exhaust.

[0026] By adopting the above embodiments, when this utility model is in use, the piston 5 reciprocates under the drive of the motor to draw in and discharge the gas in the cylinder. During the drawing process, the gas is drawn in from the air inlet 3 on the pump cover 2, enters the air inlet chamber 6 formed by the tortuous flow channel, and then enters the cylinder through the air inlet one-way valve. During the discharge process, the gas in the cylinder is squeezed by the piston 5, enters the exhaust chamber 7 formed by the tortuous flow channel through the exhaust one-way valve, and then is discharged from the exhaust port 4 on the pump cover 2.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-noise piston-type air pump, comprising a pump body (1) and a pump cover (2), wherein the pump cover (2) has an air inlet (3) and an exhaust outlet (4), and the pump body (1) contains a piston (5) which can reciprocate within the pump body (1), characterized in that: The intake chamber (6) and the exhaust chamber (7) are formed by tortuous flow channels and are symmetrically distributed in the pump cover (2). They are located in the pump cover (2) and are respectively connected to the intake port (3) and the exhaust port (4). A one-way valve seat (8) is disposed between the pump body (1) and the pump cover (2). An inlet one-way valve plate (9) is installed on the bottom surface of the one-way valve seat (8), and an exhaust one-way valve plate (10) is installed on the top surface of the one-way valve seat (8). The one-way valve seat (8) has an inlet through hole (11) and an outlet through hole (12) corresponding to the inlet one-way valve plate (9) and the exhaust one-way valve plate (10), respectively.

2. A low noise piston air pump according to claim 1, wherein: The intake one-way valve plate (9) is installed on the bottom surface of the one-way valve seat (8) by the first screw (13), and the exhaust one-way valve plate (10) is installed on the top surface of the one-way valve seat (8) by the second screw (14).

3. A low noise piston air pump according to claim 1, wherein: An intake one-way valve buffer plate (15) is installed between the intake one-way valve plate (9) and the one-way valve seat (8), and an exhaust one-way valve buffer plate (16) is installed between the exhaust one-way valve plate (10) and the one-way valve seat (8).

4. A low noise piston air pump according to claim 3, wherein: A soundproof cover (17) is installed on the one-way valve seat (8), and the exhaust one-way valve plate (10) and the outlet one-way valve buffer plate (16) are located inside the soundproof cover (17).

5. A low noise piston air pump according to claim 4, wherein: The bottom and sides of the soundproof cover (17) are missing.

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