Low-noise air pump for braking

Abstract

The utility model discloses a low-noise braking air pump, and relates to the technical field of air pumps, the low-noise braking air pump comprises a pump body, and a first air inlet pipe and a first air outlet pipe are mounted on the pump body; the noise reduction assembly is arranged at the first air outlet pipe, the noise reduction assembly comprises a noise reduction cylinder, a noise reduction pipe, a sound absorption part and a plurality of noise reduction plates, and the air inlet end of the noise reduction cylinder communicates with the first air outlet pipe; the noise reduction pipe and the sound absorption part are both installed in the noise reduction cylinder, and the noise reduction pipe is close to the exhaust end of the noise reduction cylinder. The multiple noise reduction plates are arranged in the noise reduction cylinder in a front-back staggered mode and are close to the air inlet end of the noise reduction cylinder. The device is low in noise during working.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of air pumps, in particular to a low-noise air pump for braking. BACKGROUND

[0002] The air pump for braking is used in a new energy vehicle and can provide power for the vehicle, but in the working process, the compressed gas generates airflow in the air pump, and the airflow generates great noise when flowing out, so that the air pump generates great noise, which causes environmental pollution, therefore, the existing air pump needs to be improved. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the application provides a low-noise air pump for braking to solve the technical problem that the compressed gas generates great noise when being discharged from the air pump.

[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme.

[0005] The low-noise air pump for braking comprises:

[0006] A pump body, a first air inlet pipe and a first air outlet pipe are installed on the pump body;

[0007] A noise reduction assembly is arranged at the first air outlet pipe, wherein the noise reduction assembly comprises a noise reduction cylinder, a noise reduction pipe and a sound absorbing piece, the air inlet end of the noise reduction cylinder is communicated with the first air outlet pipe, the noise reduction pipe and the sound absorbing piece are both installed in the noise reduction cylinder, the noise reduction pipe is close to the air outlet end of the noise reduction cylinder, and the sound absorbing piece is close to the air inlet end of the noise reduction cylinder.

[0008] Further, the noise reduction assembly further comprises a plurality of noise reduction plates which are staggered and arranged in the noise reduction cylinder.

[0009] Further, the noise reduction pipe comprises a first noise reduction pipe, a connecting pipe and a second noise reduction pipe which are connected in sequence, the first noise reduction pipe is communicated with the air outlet end of the noise reduction cylinder, the second noise reduction pipe is connected with the sound absorbing piece, and the noise reduction plate is closer to the air inlet end of the noise reduction cylinder than the sound absorbing piece.

[0010] Further, the air inlet end of the noise reduction cylinder is provided with a second air inlet pipe, and the second air inlet pipe is close to the noise reduction plate.

[0011] Further, the air outlet end of the noise reduction cylinder is provided with a second air outlet pipe, and the second air outlet pipe is communicated with the first noise reduction pipe.

[0012] Further, the sound absorbing piece comprises a sound absorbing box, and the sound absorbing box is filled with sound absorbing cotton.

[0013] Further, one end of the sound absorption box is provided with an inlet pipe, the inlet pipe is close to the noise reduction plate, the other end of the sound absorption box is communicated with the second noise reduction pipe.

[0014] Further, the inner wall of the noise reduction pipe is provided with a sound absorption coating.

[0015] Further, the pump body is installed on a gas pump support, and a driving motor is installed on the pump body.

[0016] From the above technical solution, the advantages of the present application are:

[0017] 1. The noise reduction assembly is provided in the application, the noise reduction assembly comprises a noise reduction cylinder, a noise reduction pipe, a sound absorption piece and a plurality of noise reduction plates staggered in front and back, the gas in the air pump is discharged from the first air outlet pipe, enters the noise reduction cylinder, and is sequentially discharged to the outside after passing through the noise reduction plate, the sound absorption piece and the noise reduction pipe, so that the noise of the gas passing through the noise reduction assembly is greatly reduced.

[0018] 2. In the application, the inner wall of the noise reduction pipe is provided with a sound absorption coating, the sound absorption box is filled with sound absorption cotton, and the noise reduction plates are staggered in front and back, which can all play a role in noise reduction and sound absorption, so that the overall noise reduction effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application.

[0020] Figure 1 It is a structural schematic view of the present application.

[0021] Figure 2 It is a top view of the noise reduction assembly of the present application connected with the first air outlet pipe.

[0022] Figure 3 It is a sectional view of the noise reduction assembly in Figure 2 .

[0023] Figure 4 It is a sectional view of the first noise reduction pipe in Figure 2 .

[0024] Figure 5 It is a sectional view of the sound absorption box in Figure 2 .

[0025] Figure 6 It is a working schematic view of the noise reduction assembly of the present application.

[0026] Explanation of reference signs: 1-pump bracket; 2-driving motor; 3-pump body; 31-first air inlet pipe; 32-first air outlet pipe; 4-second air outlet pipe; 5-second air inlet pipe; 6-noise reduction cylinder; 61-baffle; 62-first chamber; 63-second chamber; 7-air exhaust hole; 8-first noise reduction pipe; 81-sound-absorbing coating; 9-connection pipe; 10-second noise reduction pipe; 11-sound-absorbing box; 12-entrance pipe; 13-noise reduction plate; 14-air inlet; 15-vent hole. DETAILED DESCRIPTION

[0027] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the embodiments and drawings. Herein, the illustrative embodiments of the present application and the descriptions thereof are used to explain the present application, but not to limit the present application.

[0028] Reference Figures 1 to 6 As shown in Figure 1 and Figure 2 , the present embodiment provides a low-noise air pump for braking, comprising a pump body 3 and a noise reduction assembly, the pump body 3 is provided with a first air inlet pipe 31 and a first air outlet pipe 32; the noise reduction assembly is installed at the end of the first air outlet pipe 32, wherein the noise reduction assembly comprises a noise reduction cylinder 6, a noise reduction pipe, a sound-absorbing member and a plurality of noise reduction plates 13, the noise reduction cylinder 6 has an air inlet end and an air outlet end, the air inlet end is provided with an air inlet 14, the air inlet 14 is connected with a second air inlet pipe 5, the second air inlet pipe 5 is communicated with the end of the first air outlet pipe 32; the noise reduction pipe, the sound-absorbing member and the plurality of noise reduction plates 13 are all installed in the noise reduction cylinder 6, the noise reduction pipe is close to the air outlet end of the noise reduction cylinder 6, and the plurality of noise reduction plates 13 are close to the second air inlet pipe 5; the plurality of noise reduction plates 13 are staggered and arranged in the noise reduction cylinder 6, and the airflow will first pass through the plurality of noise reduction plates 13 after entering the noise reduction cylinder 6 from the first air outlet pipe 32, because the plurality of noise reduction plates 13 are staggered, the sound waves of the airflow will change the direction of movement under the blockage of the noise reduction plates 13, that is, the sound waves are diffused, so that the resonance of the sound waves passing through adjacent noise reduction plates 13 is reduced, thereby achieving the effect of noise reduction.

[0029] Specifically, as shown in Figure 3 , a baffle 61 is arranged in the noise reduction cylinder 6, the baffle 61 divides the noise reduction cylinder 6 into two chambers, i.e. a first chamber 62 and a second chamber 63, and the sound-absorbing member and the plurality of noise reduction plates 13 are installed in the first chamber 62.

[0030] Preferably, a plurality of vent holes 15 are formed on the noise reduction plate 13, the vent holes 15 adopt a conical structure, which can further change the direction of movement of the sound waves, thereby improving the noise reduction effect.

[0031] As shown in Figure 3As shown, the noise reduction pipe is installed in the second chamber 63, the noise reduction pipe comprises the first noise reduction pipe 8, the connecting pipe 9 and the second noise reduction pipe 10 connected in sequence, the exhaust end of the noise reduction cylinder 6 is provided with the exhaust hole 7, the second air outlet pipe 4 is arranged on the exhaust hole 7, the second air outlet pipe 4 is communicated with the first noise reduction pipe 8, the second noise reduction pipe 10 is connected with the sound absorbing member, and the noise reduction plate 13 is closer to the air inlet end of the noise reduction cylinder 6 than the sound absorbing member.

[0032] As shown in the figure, Figure 5 The sound absorbing member comprises the sound absorbing box 11, the sound absorbing box 11 is filled with sound absorbing cotton, the sound absorbing cotton adopts sponge material, the inside of the sound absorbing cotton is rich in holes, the sound absorbing cotton can block sound waves without affecting the airflow, and therefore the sound absorbing cotton can play a sound absorbing role. The sound absorbing box 11 is provided with the inlet pipe 12 at one end close to the noise reduction plate 13, and the other end away from the noise reduction plate 13 is communicated with the second noise reduction pipe 10.

[0033] As shown in the figure, Figure 4 The inner wall of the noise reduction pipe is provided with the sound absorbing coating 81.

[0034] Preferably, the inner wall of the first noise reduction pipe 8, the connecting pipe 9 and the second noise reduction pipe 10 is provided with the sound absorbing coating 81, the sound absorbing coating 81 adopts the composite coating disclosed in Chinese patent CN202733220U, and the sound absorbing coating 81 can make the noise reduction effect of the noise reduction pipe good.

[0035] In the embodiment of the application, the pump body 3 is installed on a gas pump support 1, and the pump body 3 is provided with a driving motor 2.

[0036] Working principle (reference Figure 6 ): The driving motor 2 is started, so that the gas enters the pump body 3 from the outside through the first air inlet pipe 31, the pump body 3 compresses the air, and then the gas is discharged from the first air outlet pipe 32, and after the gas passes through the first air outlet pipe 32, it enters the noise reduction cylinder 6 through the second air inlet pipe 5, under the action of the noise reduction plate 13, the noise of the gas can be reduced, and then the gas enters the sound absorbing box 11 through the inlet pipe 12, the sound absorbing cotton in the sound absorbing box 11 can block sound waves, so that the noise of the gas passing through is reduced again, and then the gas passes through the second noise reduction pipe 10, the connecting pipe 9 and the first noise reduction pipe 8 in sequence, the second noise reduction pipe 10, the connecting pipe 9 and the first noise reduction pipe 8 have the sound absorbing coating 81, which can also play a sound absorbing and noise reduction effect, therefore, the noise of the gas passing through the first noise reduction pipe 8 and then entering the second air outlet pipe 4 will be greatly reduced, so that the noise generated by the gas pump as a whole is very small.

[0037] In summary, the noise reduction assembly is arranged at the end of the first air outlet pipe 32 of the pump body 3, so that the noise of the gas discharged through the first air outlet pipe 32 is greatly reduced, thereby making the noise of the gas pump small when working.

[0038] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. The embodiments of the present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A low-noise air pump for a brake, characterized by comprising: The utility model relates to a gas pump with noise reduction function, comprising: a pump body (3) on which a first air inlet pipe (31) and a first air outlet pipe (32) are mounted; a noise reduction assembly arranged at the first air outlet pipe (32), wherein the noise reduction assembly comprises a noise reduction cylinder (6), a noise reduction pipe and a sound absorbing piece, the air inlet end of the noise reduction cylinder (6) is communicated with the first air outlet pipe (32), the noise reduction pipe and the sound absorbing piece are both mounted in the noise reduction cylinder (6), the noise reduction pipe is close to the air outlet end of the noise reduction cylinder (6), and the sound absorbing piece is close to the air inlet end of the noise reduction cylinder (6).

2. The low-noise air pump for braking according to claim 1, characterized in that, The noise reduction assembly further comprises a plurality of noise reduction plates (13) which are staggered front and back in the noise reduction cylinder (6).

3. The low-noise brake air pump of claim 2, wherein The noise reduction pipe comprises a first noise reduction pipe (8), a connecting pipe (9) and a second noise reduction pipe (10) which are connected in sequence, the first noise reduction pipe (8) is communicated with the air outlet end of the noise reduction cylinder (6), the second noise reduction pipe (10) is connected with the sound absorbing piece, and the noise reduction plate (13) is closer to the air inlet end of the noise reduction cylinder (6) than the sound absorbing piece.

4. The low noise air brake pump of claim 3 wherein, The air inlet end of the noise reduction cylinder (6) is provided with a second air inlet pipe (5), and the second air inlet pipe (5) is close to the noise reduction plate (13).

5. The low noise air brake pump of claim 3 wherein, The air outlet end of the noise reduction cylinder (6) is provided with a second air outlet pipe (4), and the second air outlet pipe (4) is communicated with the first noise reduction pipe (8).

6. The low noise air brake pump of claim 3 wherein, The sound absorbing piece comprises a sound absorbing box (11) which is filled with sound absorbing cotton.

7. The low-noise brake air pump of claim 6, wherein One end of the sound absorbing box (11) is provided with an entering pipe (12) which is close to the noise reduction plate (13), and the other end of the sound absorbing box (11) is communicated with the second noise reduction pipe (10).

8. The low noise air brake pump of claim 3 wherein, The inner wall of the noise reduction pipe is provided with a sound absorbing coating (81).

9. The low noise air brake pump of claim 3 wherein, The pump body (3) is mounted on a gas pump support (1), and a driving motor (2) is mounted on the pump body (3).

Images