Noise reduction type pneumatic motor

Abstract

The utility model discloses a noise reduction type pneumatic motor, which relates to the field of pneumatic motors and comprises a motor main body, an air outlet pipeline is fixedly mounted on the motor main body, a noise reduction cover is sleeved on the motor main body and consists of a first sponge sleeve and a rubber air bag sleeve, and the rubber air bag sleeve is fixedly sleeved on the first sponge sleeve. A silencer is installed on the air outlet pipeline and composed of a shell, a second sponge sleeve, a first partition plate, a second partition plate, a third partition plate, an air inlet threaded pipe, an air outlet threaded pipe and a porous pipe, the second sponge sleeve is fixedly installed on the inner wall of the shell, and the first partition plate, the second partition plate and the third partition plate are all fixedly installed on the inner wall of the second sponge sleeve; the noise reduction cover is arranged on the motor main body, the noise reduction cover adopts a dual-structure design of the first sponge sleeve and the rubber air bag sleeve, the first sponge sleeve effectively absorbs high-frequency vibration noise, the rubber air bag sleeve blocks low-frequency noise, and the overall noise during operation of the motor main body is remarkably reduced through the synergistic effect of the first sponge sleeve and the rubber air bag sleeve.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pneumatic motor, especially relates to a noise reduction type pneumatic motor. BACKGROUND

[0002] Pneumatic motor is a device that converts the energy of compressed air into mechanical energy, widely used in industrial fields. Its working principle is based on the compressed air entering the motor cavity to push the rotor or piston movement, thereby outputting torque and rotating speed. Pneumatic motor is mainly divided into vane type, piston type and gear type, among which the vane type structure is simple, high speed, suitable for light load high speed occasion; the piston type has large torque and strong starting force, suitable for heavy load low speed working condition; the gear type considers efficiency and stability. The advantages of pneumatic motor include explosion-proof, high temperature resistance, no electric spark risk, suitable for flammable and explosive environment; it has overload protection characteristics, and automatically stops when the load is too large without damage; compact structure, easy maintenance and long service life. In addition, it can also work stably in humid, dusty and other harsh conditions, and can realize stepless speed regulation by adjusting air pressure or flow. Common application scenarios include mine machinery, chemical equipment, pneumatic tools and automatic production lines. The main disadvantages are high energy consumption, high noise and the need for air compression system. The noise of pneumatic motor comes from many aspects, such as the internal gear or transmission mechanism of pneumatic motor, the friction and collision between metal parts will produce high frequency noise; when the compressed air is discharged from the motor at high speed after completing the work, the turbulence and expansion of the exhaust port will produce high frequency whistling. Noise can cause hearing loss in operators, and even cause permanent deafness, and may induce headache, insomnia, fatigue and other physiological discomfort, so the application puts forward a noise reduction type pneumatic motor. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the utility model is to provide a noise reduction type pneumatic motor, which can effectively solve the problems in the background art.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is:

[0005] The utility model provides a kind of noise reduction type pneumatic motor, including motor body, the motor body is fixedly installed with air outlet pipeline, the motor body is equipped with noise reduction cover, the noise reduction cover is composed of first sponge cover and rubber air bag cover, the rubber air bag cover is fixedly equipped on first sponge cover, the air outlet pipeline is installed with silencer, the silencer is composed of shell, second sponge cover, first baffle, second baffle, third baffle, air inlet threaded pipe, air outlet threaded pipe and porous pipe, the second sponge cover is fixedly installed on the inner wall of shell, the first baffle, second baffle, third baffle are all fixedly installed on the inner wall of second sponge cover, the second baffle is located first baffle and third baffle, the air inlet threaded pipe is fixedly installed on shell and first baffle, the air outlet threaded pipe is fixedly installed on shell and third baffle, the porous pipe has several and is all fixedly installed on second baffle and third baffle.

[0006] Preferably, the motor body is fixedly installed with air inlet pipeline.

[0007] Preferably, the first sponge cover of the noise reduction cover is equipped on the motor body, two set-up holes are formed in the first sponge cover and the rubber air bag cover, and the first sponge cover and the rubber air bag cover are equipped on the air inlet pipeline and the air outlet pipeline through the set-up holes.

[0008] Preferably, the air inlet threaded pipe of the silencer is installed in the air outlet pipeline, the air inlet threaded pipe passes through the side wall of the first baffle and the shell, and the air outlet threaded pipe passes through the other side wall of the third baffle and the shell.

[0009] Preferably, the porous pipe of the silencer is fixedly installed in the inner end of the third baffle, and the porous pipe passes through the second baffle.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] (1) by setting noise reduction cover on the motor body, the noise reduction cover adopts the double structure design of first sponge cover and rubber air bag cover, the first sponge cover effectively absorbs high-frequency vibration noise, and the rubber air bag cover blocks low-frequency noise, and the synergistic effect of the two significantly reduces the overall noise when the motor body operates.

[0012] (2) by setting silencer on the air outlet pipeline, the silencer forms multi-stage expansion cavity and sound absorption layer through the combination of first baffle, second baffle, third baffle, porous pipe and second sponge cover, effectively weakens the exhaust high-frequency whistling, the porous pipe disperses the concentrated airflow into multiple small airflows, reduces turbulent noise, and the air inlet threaded pipe and the air outlet threaded pipe ensure the sealing property, avoid additional noise due to air leakage, thereby overall improve the noise reduction effect. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the whole structure schematic diagram of the utility model;

[0014] Figure 2 It is the sectional view of the utility model's noise reduction cover;

[0015] Figure 3 It is the structure schematic diagram of one of the views after the utility model's silencer is cut;

[0016] Figure 4 It is the structure schematic diagram of another view after the utility model's silencer is cut.

[0017] In the drawing: 1, motor main body;2, air inlet pipe;3, air outlet pipe;4, noise reduction cover;5, silencer;6, first sponge cover;7, rubber air bag cover;8, sleeve hole;9, shell;10, second sponge cover;11, first baffle;12, second baffle;13, third baffle;14, air inlet threaded pipe;15, air outlet threaded pipe;16, porous pipe. Specific implementation

[0018] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific implementation.

[0019] Please refer to Figure 1 - Figure 4 As shown in the drawing, a noise reduction type pneumatic motor, comprising a motor main body 1, the motor main body 1 is fixedly installed with an air outlet pipe 3, the motor main body 1 is sleeved with a noise reduction cover 4, the noise reduction cover 4 is composed of a first sponge cover 6 and a rubber air bag cover 7, the rubber air bag cover 7 is fixedly sleeved on the first sponge cover 6, the air outlet pipe 3 is installed with a silencer 5, the silencer 5 is composed of a shell 9, a second sponge cover 10, a first baffle 11, a second baffle 12, a third baffle 13, an air inlet threaded pipe 14, an air outlet threaded pipe 15 and a porous pipe 16, the second sponge cover 10 is fixedly installed on the inner wall of the shell 9, the first baffle 11, the second baffle 12 and the third baffle 13 are all fixedly installed on the inner wall of the second sponge cover 10, the second baffle 12 is located between the first baffle 11 and the third baffle 13, the air inlet threaded pipe 14 is fixedly installed on the shell 9 and the first baffle 11, the air outlet threaded pipe 15 is fixedly installed on the shell 9 and the third baffle 13, the porous pipe 16 is several and all is fixedly installed on the second baffle 12 and the third baffle 13, the motor main body 1 is fixedly installed with an air inlet pipe 2 at the same time, the noise reduction cover 4 realizes noise reduction through the synergistic effect of the double structure of the first sponge cover 6 and the rubber air bag cover 7, the porous structure of the first sponge cover 6 can effectively absorb the high-frequency vibration noise generated when the motor runs, and the rubber air bag cover 7 utilizes its elastic property to block the propagation of low-frequency noise, the combination of the two significantly reduces the overall noise level of the motor main body 1.

[0020] Specifically, the first sponge sleeve 6 on the noise reduction cover 4 is sleeved on the motor body 1, two sleeve holes 8 are formed on the first sponge sleeve 6 and the rubber air bag sleeve 7, and the first sponge sleeve 6 and the rubber air bag sleeve 7 are sleeved on the air inlet pipeline 2 and the air outlet pipeline 3 through the sleeve holes 8 formed thereon. The design of the sleeve holes 8 enables the noise reduction cover 4 to closely fit the motor body 1, the air inlet pipeline 2 and the air outlet pipeline 3, so as to ensure that the noise reduction effect covers the entire motor system, and the first sponge sleeve 6 and the rubber air bag sleeve 7 are fixed through the sleeve holes 8, thereby avoiding additional vibration noise caused by loosening.

[0021] Therefore, by arranging the noise reduction cover 4 on the motor body 1, the noise reduction cover 4 adopts a double structure design of the first sponge sleeve 6 and the rubber air bag sleeve 7, the first sponge sleeve 6 effectively absorbs high-frequency vibration noise, and the rubber air bag sleeve 7 blocks low-frequency noise, and the two work together to significantly reduce the overall noise when the motor body 1 operates.

[0022] Specifically, the air inlet threaded pipe 14 on the muffler 5 is installed in the air outlet pipeline 3, the air inlet threaded pipe 14 passes through one side wall of the shell 9 and the first partition plate 11 at the same time, the air outlet threaded pipe 15 passes through the other side wall of the shell 9 and the third partition plate 13 at the same time, and the perforated pipe 16 on the muffler 5 is fixedly installed at the inner end of the third partition plate 13 and passes through the second partition plate 12 at the same time. The muffler 5 realizes noise reduction through the combination of multiple expansion cavities and sound absorption layers. After compressed air enters the muffler 5 from the air inlet threaded pipe 14, it is first dispersed into multiple small air flows through the perforated pipe 16, reducing turbulent noise. Subsequently, the air flow passes through the multiple expansion cavities formed by the first partition plate 11, the second partition plate 12 and the third partition plate 13, gradually reducing the air flow speed and pressure, weakening high-frequency whistling. The second sponge sleeve 10 further absorbs residual noise, ensuring that the exhaust noise is reduced to a minimum. The design of the air inlet threaded pipe 14 and the air outlet threaded pipe 15 ensures the sealing property, avoiding additional noise caused by air leakage.

[0023] Therefore, by arranging the muffler 5 on the air outlet pipeline 3, the muffler 5 forms multiple expansion cavities and sound absorption layers through the combination of the first partition plate 11, the second partition plate 12, the third partition plate 13, the perforated pipe 16 and the second sponge sleeve 10, effectively weakening the exhaust high-frequency whistling. The perforated pipe 16 disperses the concentrated air flow into multiple small air flows, reducing turbulent noise, and the connection of the air inlet threaded pipe 14 and the air outlet threaded pipe 15 ensures the sealing property, avoiding additional noise caused by air leakage, thereby improving the overall noise reduction effect.

[0024] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or equivalently replace some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. The protection scope of the present application is defined by the appended claims and equivalents thereof.

Claims

1. A noise reduction type pneumatic motor comprising a motor body (1), a gas outlet pipe (3) is fixedly installed on the motor body (1), characterized in that: The motor body (1) is sleeved with a noise reduction cover (4), the noise reduction cover (4) is composed of a first sponge sleeve (6) and a rubber air bag sleeve (7), the rubber air bag sleeve (7) is fixedly sleeved on the first sponge sleeve (6), the air outlet pipeline (3) is provided with a silencer (5), the silencer (5) is composed of a shell (9), a second sponge sleeve (10), a first baffle (11), a second baffle (12), a third baffle (13), an air inlet threaded pipe (14), an air outlet threaded pipe (15) and a porous pipe (16), the second sponge sleeve (10) is fixedly installed on the inner wall of the shell (9), the first baffle (11), the second baffle (12) and the third baffle (13) are all fixedly installed on the inner wall of the second sponge sleeve (10), the second baffle (12) is located between the first baffle (11) and the third baffle (13), the air inlet threaded pipe (14) is fixedly installed on the shell (9) and the first baffle (11), the air outlet threaded pipe (15) is fixedly installed on the shell (9) and the third baffle (13), and the porous pipe (16) is provided with a plurality of porous pipes and is fixedly installed on the second baffle (12) and the third baffle (13).

2. A noise reducing air motor as defined in claim 1 wherein: The motor body (1) is fixedly installed with an air inlet pipeline (2).

3. A noise reducing air motor as defined in claim 2 wherein: The first sponge sleeve (6) of the noise reduction cover (4) is sleeved on the motor body (1), the first sponge sleeve (6) and the rubber air bag sleeve (7) are both provided with two sleeve holes (8), and the first sponge sleeve (6) and the rubber air bag sleeve (7) are sleeved on the air inlet pipeline (2) and the air outlet pipeline (3) through the sleeve holes (8) formed therein.

4. A noise reducing air motor as defined in claim 3 wherein: The air inlet threaded pipe (14) of the silencer (5) is installed in the air outlet pipeline (3), the air inlet threaded pipe (14) penetrates through one side wall of the first baffle (11) and the shell (9), and the air outlet threaded pipe (15) penetrates through the other side wall of the third baffle (13) and the shell (9).

5. A noise reducing air motor as defined in claim 4 wherein: The porous pipe (16) of the silencer (5) is fixedly installed at the inner end of the third baffle (13), and the porous pipe (16) penetrates through the second baffle (12) at the same time.

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