Mute negative pressure pump

Abstract

The utility model provides a mute negative pressure pump which comprises a pump body, the pump body is provided with a gas chamber and a mute chamber, the gas chamber is provided with a leather compression sleeve, the leather compression sleeve is provided with a compression swing rod, the compression swing rod is driven by a motor, the motor is connected to the compression swing rod through an eccentric shaft, and the motor is connected with the mute chamber. The size of the compression swing rod is matched with that of the leather compression sleeve, the compression swing rod swings to enable the interior of the gas cavity to be compressed, the leather compression sleeve is connected with a valve plate, the valve plate is provided with a first communication hole, the first communication hole penetrates through the mute cavity, the mute cavity is communicated with an exhaust hole, and the exhaust hole is communicated with the compression swing rod. An umbrella-shaped one-way valve is arranged on the valve plate and can open the first communicating hole under pressure.

Description

Technical Field

[0001] The utility model relates to a silent negative pressure pump. Background Art

[0002] The current micro negative pressure pump directly discharges the gas into the atmosphere without any sound treatment at the gas cover part, so that the gas has a large echo in the gas chamber and a large sound when discharged into the atmosphere. Summary of the invention

[0003] In order to achieve the above purpose, the utility model provides a silent negative pressure pump, which is achieved through the following scheme.

[0004] A silent negative pressure pump comprises a pump body, the pump body is provided with a gas chamber and a silent chamber, the gas chamber is installed with a leather compression sleeve, the leather compression sleeve is provided with a compression rocker arm, the compression rocker arm is driven by a motor, the motor is connected to the compression rocker arm through an eccentric shaft, the compression rocker arm is adapted to the size of the leather compression sleeve, the compression rocker arm swings to compress the gas chamber, the leather compression sleeve is connected with a valve plate, the valve plate is provided with a first connecting hole, the first connecting hole passes through the silent chamber, the silent chamber is connected to an exhaust hole, the valve plate is provided with an umbrella-shaped one-way valve, the umbrella-shaped one-way valve can open the first connecting hole under pressure.

[0005] Furthermore, there are multiple leather compression sleeves, and correspondingly, there are also multiple compression rocker arms, and the compression rocker arms are distributed along the circumference and are driven by a motor.

[0006] Furthermore, a sound absorbing panel is arranged in the sound-proof chamber, and the sound absorbing panel is arranged directly opposite to the connecting hole.

[0007] Furthermore, the silent chamber cover is closed with an end cover, the silent chamber is provided with a second communicating hole, the second communicating hole is provided with an umbrella-shaped one-way valve, the second communicating hole is directly opposite to the top wall of the end cover, the exhaust hole is provided on the side wall of the end cover, a first partition wall and a second partition wall are provided between the top of the silent chamber and the side wall of the end cover, the first partition wall and the second partition wall are both provided with through openings, and the through openings of the first partition wall and the second partition wall are staggered.

[0008] Furthermore, the end cover is fastened to the pump body by screws.

[0009] The beneficial effect of the utility model is that in the structure of the utility model, the gas to be exhausted can be silenced by providing a silent chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the explosion structure of the utility model silent negative pressure pump;

[0011] Figure 2 This is another exploded structural schematic diagram of the silent negative pressure pump of the present utility model. Detailed implementation manners

[0012] The present utility model will be further described below in conjunction with embodiments. The described embodiments are only a part of the embodiments of the present utility model. These embodiments are only used to explain the present utility model and do not constitute any limitation to the scope of the present utility model.

[0013] As Figures 1 to 2 shown, the present utility model provides a silent negative pressure pump, including a pump body 1. The pump body 1 is provided with a gas chamber 11 and a silent chamber 12. A leather compression sleeve 13 is installed in the gas chamber 11. A compression swing rod 14 is provided on the leather compression sleeve 13. The compression swing rod 14 is driven by a motor 15. The motor 15 is connected to the compression swing rod 14 through an eccentric shaft 16. The compression swing rod 14 is adapted to the size of the leather compression sleeve 13. The compression swing rod 14 swings to compress the gas chamber 11. The leather compression sleeve 13 is connected with a valve plate 17. The valve plate 17 is provided with a first communication hole 171. The first communication hole 171 penetrates through the silent chamber 12. The silent chamber 12 communicates with an exhaust hole 18. An umbrella-shaped one-way valve 19 is provided at the valve plate 17. The umbrella-shaped one-way valve 19 can open the first communication hole 171 under pressure.

[0014] In the structure of the present utility model, the silent chamber is provided to perform sound absorption treatment on the gas to be discharged.

[0015] Furthermore, there are multiple leather compression sleeves 13. Correspondingly, there are also multiple compression swing rods 14. The compression swing rods 14 are distributed along the circumference and are integrally driven by the motor 15. Multiple compression devices are provided here. When the motor rotates, the multiple compression devices work alternately, enabling the pump body to work continuously without interruption.

[0016] Furthermore, a sound absorption board 121 is provided in the silent chamber 12. The sound absorption board 121 is disposed opposite to the first communication hole 171. This can enable the gas coming out of the first communication hole to directly touch the sound absorption board, fully absorbing sound.

[0017] Further, an end cap 20 covers the silent chamber 12. The silent chamber 12 is provided with a second communication hole 121, and an umbrella-shaped one-way valve 19 is arranged in the second communication hole 121. The second communication hole 121 faces the top wall of the end cap 20. The exhaust hole 18 is arranged on the side wall of the end cap 20. A first partition wall 21 and a second partition wall 22 are arranged between the top of the silent chamber 12 and the side wall of the end cap 20. Through holes 23 are arranged in both the first partition wall 21 and the second partition wall 22, and the through holes 23 of the first partition wall 21 and the second partition wall 22 are arranged in a staggered manner. After the functions of the first partition wall and the second partition wall, further buffering and noise reduction can be achieved.

[0018] Further, the end cap 20 is fastened to the pump body 1 by screws.

[0019] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A silent negative pressure pump, characterized in that: It includes a pump body, in which a gas chamber and a silent chamber are provided. A leather compression sleeve is installed in the gas chamber. The leather compression sleeve is provided with a compression swing rod, which is driven by a motor. The motor is connected to the compression swing rod through an eccentric shaft. The compression swing rod is adapted to the size of the leather compression sleeve. The compression swing rod swings to compress the gas in the gas chamber. The leather compression sleeve is connected with a valve plate, and the valve plate is provided with a first communication hole, which penetrates through the silent chamber. The silent chamber communicates with an exhaust hole. An umbrella-shaped one-way valve is arranged at the valve plate, and the umbrella-shaped one-way valve can open the first communication hole under pressure.

2. The silent negative pressure pump according to claim 1, characterized in that: There are multiple leather compression sleeves. Correspondingly, there are also multiple compression swing rods, and the compression swing rods are distributed along the circumference and are connected together and driven by a motor.

3. The silent negative pressure pump according to claim 1, characterized in that: Sound-absorbing plates are arranged in the silent chamber, and the sound-absorbing plates are arranged opposite to the communication holes.

4. The silent negative pressure pump according to claim 1, characterized in that: An end cover covers the silent chamber. The silent chamber is provided with a second communication hole, and an umbrella-shaped one-way valve is arranged at the second communication hole. The second communication hole is opposite to the top wall of the end cover. The exhaust hole is arranged on the side wall of the end cover. A first partition wall and a second partition wall are arranged between the top of the silent chamber and the side wall of the end cover. Through holes are arranged on both the first partition wall and the second partition wall, and the through holes of the first partition wall and the second partition wall are arranged in a staggered manner.

5. The silent negative pressure pump according to claim 4, characterized in that: The end cover is fastened to the pump body by screws.

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