CN212389530U

CN212389530U - Resistant thermal-insulated muffler base

Info

Publication number: CN212389530U
Application number: CN202022156536.6U
Authority: CN
Inventors: 毛羽虎
Original assignee: Jiangsu Aichuan Machinery Co ltd
Current assignee: Jiangsu Aichuan Machinery Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-01-22
Anticipated expiration: 2030-09-27

Abstract

The utility model provides a resistance muffler base that insulates against heat, includes base, air inlet, amortization subassembly, gas vent, the air inlet setting on base upper portion, the gas vent sets up the side at the base, the amortization subassembly set up inside the base, compressed air gets into from the air inlet, through the amortization subassembly, discharges from the gas vent at last. According to the invention, through the hole pipe, the diffusion cavity and the interference resonance, broadband noise reduction is realized, and the universality is strong; the silencer has the advantages that the silencer is free of sound absorption materials and falling risks, downstream food and medicines cannot be polluted in occasions needing clean gas, the silencer is also used as an equipment base, occupied area is reduced, and a frame base is not needed.

Description

Resistant thermal-insulated muffler base

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to a resistant heat-insulation silencer base.

Background

Positive displacement compressors, such as oil-free screw compressors and roots blowers, have major noise sources being airflow noise and mechanical noise. The noise characteristics of the oil-free screw compressor and the Roots blower are wide frequency, high points exist at low frequency, and a platform is formed by reducing in a medium frequency region. The silencer is mainly of two types, namely a resistive silencer which adopts sound absorption materials to carry out silencing, and a resistive silencer which utilizes expansion, resonance and interference to carry out silencing. Because oil-free screw compressor and roots's fan belong to oil-free equipment, mainly used food, transport such as medicine need clean air, if adopt hindering nature muffler sound absorbing material can drop, pollute food and medicine, and noise reduction effect weakens simultaneously. When the moisture content of the air or other gas to be conveyed is high, the separation effect is required to reduce the moisture content of the downstream gas. When the dust conveying device is used in a powder conveying pipeline, the dust in the pipeline can be detonated by the sparks generated if the device has a collision and friction fault, so that the silencer has the function of a spark isolator and isolates the sparks in the device to be not conducted.

Disclosure of Invention

In view of the above-mentioned problems, an object of the present invention is to provide a reactive thermal muffler base, which achieves the effects of interference noise reduction, resonance noise reduction, and reflection noise reduction through the combined action of three-stage diffusion chambers, and reduces the system noise to the maximum extent while keeping the pressure drop of the output gas to the minimum.

The technical scheme adopted by the invention is as follows: the utility model provides a resistance muffler base that insulates against heat, includes base, air inlet, amortization subassembly, gas vent, the air inlet setting on base upper portion, the gas vent sets up the side at the base, the amortization subassembly set up inside the base, compressed air gets into from the air inlet, through the amortization subassembly, discharges from the gas vent at last, its characterized in that: the base is provided with an adjustable motor base.

As a preferred scheme, the amortization subassembly include first hole pipe, amortization chamber, pipe, first baffle, second hole pipe, the amortization chamber install inside the base, first hole pipe hoist and mount inside the air inlet and switch on with the amortization chamber, the pipe setting inside the amortization chamber, pipe one end is fixed on the base inner wall and is switched on with the gas vent, one end switches on with the amortization chamber in addition, pipe and amortization chamber between still be provided with first baffle and second baffle, first baffle and second baffle between still be connected with the second hole pipe.

As a preferred scheme, a plurality of through holes are uniformly distributed in the circumferential direction and at the bottom of the first hole pipe.

As a preferable scheme, the first partition plate and the second partition plate divide the silencing cavity into a first pressure expansion cavity, a second pressure expansion cavity and a third pressure expansion cavity.

As a preferred scheme, the silencing cavity is circular, the second hole pipes are circumferentially and uniformly distributed relative to the silencing cavity, and specifically, the number of the second hole pipes is four.

As a preferred scheme, the left end and the right end of the second hole pipe are respectively communicated with the first pressure expansion cavity and the third pressure expansion cavity.

As a preferred scheme, a rectangular through hole is formed in the middle of the second hole pipe, and the rectangular through hole is communicated with the second diffusion cavity.

Preferably, a heat insulating material is filled between the sound attenuation cavity and the inner wall of the base.

As a preferable scheme, a safety valve interface and an unloading valve interface are further arranged on the base and communicated with the silencing cavity.

As a preferred scheme, the base is further provided with a temperature measuring interface, a pressure measuring interface and a condensation discharging interface, the temperature measuring interface and the pressure measuring interface are communicated with the silencing cavity, and the condensation discharging interface is communicated with the bottom of the silencing cavity.

The invention has the advantages of the following aspects:

1. the noise reduction device has the advantages that the noise reduction device is free of sound absorption materials and falling risks, can not pollute the downstream food, medicines and other occasions needing clean gas, can not block downstream components such as an aeration head in sewage treatment, and can not reduce the noise reduction effect along with the time lapse in the whole life cycle;

2. the silencer is also used as an equipment base, so that the occupied area is reduced, and a frame base is not needed;

3. the broadband noise reduction is realized through the hole pipe, the diffusion cavity and the interference resonance, and the universality is strong;

4. the silencing cavity and the inner wall of the base form an interlayer in a reserved space, and the silencing cavity and the inner wall of the base are filled with a heat-insulating coating material, so that a certain silencing effect is achieved, the defect that a resistant silencer cannot muffle high frequency is overcome, high temperature is isolated from being conducted to the outer surface to avoid scalding, and the fault caused by overheating of equipment due to the fact that the high temperature is conducted into the cover is isolated;

5. isolating the radiation noise generated by the high-speed airflow impacting the wall of the silencing cavity;

6. separating water drops in the conveying medium to prevent a large amount of water from entering a downstream pipeline;

7. the spark generated when the isolation equipment is rubbed can prevent the spark from being conducted to the downstream pipeline, thereby avoiding the dust explosion in the pipeline

Drawings

FIG. 1 is a three-dimensional view of a resistant insulated muffler base of the present invention;

FIG. 2 is a three-dimensional view of a resistant insulated muffler base of the present invention;

FIG. 3 is a front view of a resistive insulating muffler base of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a top view of a resistive thermal muffler base according to the present invention;

FIG. 6 is a cross-sectional view B-B of FIG. 5;

FIG. 7 is a front view of a second bore tube of the present invention;

fig. 8 is a top view of a second bore tube of the present invention.

In the figure: 1 base, 2 air inlets, 3 noise reduction assemblies, 4 air outlets and 5 heat insulation materials.

Detailed Description

Known from fig. 1 to 8, a resistance heat-insulating silencer base sketch map, including base 1, air inlet 2, amortization subassembly 3, gas vent 4, air inlet 2 sets up on base 1 upper portion, and gas vent 4 sets up the side at base 1, and amortization subassembly 3 sets up inside base 1, and compressed air gets into from air inlet 2, through amortization subassembly 3, discharges from gas vent 4 at last.

Further, the silencing component 3 comprises a first hole pipe 31, a silencing cavity 32, a conduit 33, a first partition plate 34, a second partition plate 35 and a second hole pipe 36, the silencing cavity 32 is installed inside the base 1, the first hole pipe 31 is hung inside the air inlet 2 and communicated with the silencing cavity 32, the conduit 33 is arranged inside the silencing cavity 32, one end of the conduit 33 is fixed on the inner wall of the base 1 and communicated with the exhaust port 4, the other end of the conduit 33 is communicated with the silencing cavity 32, the first partition plate 34 and the second partition plate 35 are further arranged between the conduit 33 and the silencing cavity 32, the second hole pipe 36 is further connected between the first partition plate 34 and the second partition plate 35, a plurality of through holes are uniformly distributed in the circumferential direction and the bottom of the first hole pipe 31, the silencing cavity 32 is divided into a first pressure expansion cavity 37, a second pressure expansion cavity 38 and a third pressure expansion cavity 39 by the first partition plate 34 and the second partition plate 35, the silencing cavity 32 is circular, and the second hole pipes 36 are uniformly distributed in the circumferential direction relative to the silencing cavity, specifically, the number of the second hole pipes 36 is four, the first pressure expansion cavity 37 and the third pressure expansion cavity 39 are respectively communicated with the left end and the right end of the second hole pipe 36, a rectangular through hole 361 is arranged in the middle of the second hole pipe 36, and the rectangular through hole 361 is communicated with the second pressure expansion cavity 38.

The silencer base has the following functions:

first, a silencing effect

The arrow direction in the figure is the gas flowing direction, as shown in fig. 1 to 8, after the gas is compressed by the compressor or the fan, the gas flow enters the first hole pipe 31 from the muffler gas inlet 2 along with very high noise, the diameter of the through hole of the first hole pipe 31 is 6-9mm, the total area of the through hole is larger than the cross section of the gas inlet to avoid excessive pressure loss, after the gas flow enters the first diffusion cavity 37 through the small hole of the first hole pipe 31, the cross section is suddenly enlarged, the sound wave is reflected to cause attenuation and noise reduction, a part of the gas flow directly enters the second diffusion cavity 38 through the rectangular through hole 361 of the second hole pipe 36 or continues to enter the third diffusion cavity 39 along the pipe wall of the second hole pipe 36, the other part of the gas is divided into two paths around the circumference of the guide pipe 33 and joins at the lower part of the first diffusion cavity 37, the two paths have the same frequency and opposite directions, and mutually offset at the bottom to form interference noise reduction, and the silenced gas enters the second diffusion cavity 38 through the rectangular through The pipe wall of the second hole pipe 36 enters the third diffusion cavity 39 forward, wherein the airflow entering the second diffusion cavity 38 from the rectangular through holes 361 of the four second hole pipes 36 further forms diffusion and resonates to generate a sound attenuation effect, and then enters the third diffusion cavity 39 along with the convergence of the second hole pipe 36 and the original other part of airflow, the sectional area of the air entering the third diffusion cavity 39 is suddenly increased from the second hole pipe 36, the sound wave is reflected and attenuated, and then the sound wave is reduced and repeatedly reflected and attenuated to enter the conduit 33 and then discharged from the exhaust port 4 through the one-way valve 41, and the heat insulation material 5 is filled between the sound attenuation cavity 32 and the inner wall of the base 1, and meanwhile, the heat insulation material 5 also has a certain sound attenuation effect, so that the high-frequency noise of the airflow can be reduced, and the radiation noise of resonance generated by the airflow impacting the pipe wall of the sound attenuation cavity.

Second, the equipment base

Oil-free screw compressors and Roots blowers need bases to install a main machine, a motor and various valves such as safety valves, unloading valves, one-way valves and the like. This technical scheme integrates amortization subassembly 3 on base 1, except having the amortization function, still have the base function of equipment, this base comprises following each part, gas vent 4 is used for connecting expansion joint and system pipe connection, check valve 41 prevents the equipment reversal, air inlet 2 connects compressor or fan host computer, adjustable motor base 11 is used for installing and adjusting the motor of different model specifications, the relief valve is installed in relief valve interface 12 position, unloading valve interface 13 installs the unloading valve, the temperature of gas is realized through installing the thermoscope at temperature measurement interface 14, pressure measurement interface 15 is used for installing manometer or pressure transmitter, when the gas of carrying contains the bulk moisture, the water after the separation is discharged from condensation emission interface 16. The whole base or equipment is lifted and installed through the lifting lugs 17. Most accessories of the equipment are installed on the base.

Third, heat insulation function

Gas is different according to pressure after the compression, and exhaust temperature is different, all can be more than 140 degrees usually, reaches 180 degrees even, and through the muffler conduction, surface temperature can reach 120 degrees, under such temperature condition, the scald accident takes place easily, and the heat all gives off in the cover in addition, with the temperature rise in the cover, makes the radiating effect descend, has improved inlet air temperature, because inlet air temperature rises to reduce compression efficiency, still can make host computer and motor overheated simultaneously. In the technology, the heat insulation material 5 is filled in the interlayer between the sound attenuation cavity 32 and the inner wall of the base 1, so that high temperature is locked in the silencer, and scalding and equipment overheating are avoided.

Fourth, separation

When the compressed gas contains a large amount of moisture, the moisture in the gas flow is separated into water drops and drops in the silencer to avoid entering a downstream pipeline because the gas is frequently contracted, expanded and collided in the silencer.

Fifthly, spark isolation explosion prevention

Similar with the function of separation of water, when equipment takes place to rub trouble, the metal parts produce high temperature and form the spark, because divide into three diffusion chamber in the muffler, the spark is along with the continuous collision that goes on of air current, and the inflation is contract, drops, can't reach the gas vent and get into in the system, has played the spark isolator function. In powder conveying system, be full of inflammable and explosive dust in the pipeline, the dust can be detonated in the appearance of spark, for making the system avoid the explosion, need install the spark isolator in the pipeline, and this technique just can exempt from to adorn the spark isolator, and reduce cost reduces the explosion and takes place the risk.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a resistance muffler base that insulates against heat, includes base (1), air inlet (2), amortization subassembly (3), gas vent (4), air inlet (2) set up on base (1) upper portion, gas vent (4) set up the side at base (1), amortization subassembly (3) set up inside base (1), compressed air gets into from air inlet (2), through amortization subassembly (3), discharges from gas vent (4) at last, its characterized in that: the base (1) is provided with an adjustable motor base (11).

2. The resistive insulating muffler base of claim 1, wherein: amortization subassembly (3) include first hole pipe (31), amortization chamber (32), pipe (33), first baffle (34), second baffle (35), second hole pipe (36), amortization chamber (32) install inside base (1), first hole pipe (31) hoist and mount inside air inlet (2) and switch on with amortization chamber (32), pipe (33) set up inside amortization chamber (32), pipe (33) one end is fixed on base (1) inner wall and is switched on with gas vent (4), in addition one end switches on with amortization chamber (32), pipe (33) and amortization chamber (32) between still be provided with first baffle (34) and second baffle (35), first baffle (34) and second baffle (35) between still be connected with second hole pipe (36).

3. The resistive insulating muffler base of claim 2, wherein: a plurality of through holes are uniformly distributed in the circumferential direction and at the bottom of the first hole pipe (31).

4. The resistive insulating muffler base of claim 2, wherein: the first partition plate (34) and the second partition plate (35) divide the sound attenuation cavity (32) into a first pressure expansion cavity (37), a second pressure expansion cavity (38) and a third pressure expansion cavity (39).

5. The resistive insulating muffler base of claim 2, wherein: the silencing cavity (32) is circular, the second hole pipes (36) are uniformly distributed on the circumference of the silencing cavity (32), and specifically, the number of the second hole pipes (36) is four.

6. A resistive thermal muffler base as defined in claim 2 or 4, wherein: the left end and the right end of the second pore pipe (36) are respectively communicated with the first pressure expansion cavity (37) and the third pressure expansion cavity (39).

7. The resistive insulating muffler base of claim 2, wherein: the middle of the second hole pipe (36) is provided with a rectangular through hole (361), and the rectangular through hole (361) is communicated with the second pressure expansion cavity (38).

8. The resistive insulating muffler base of claim 2, wherein: and a heat insulating material (5) is filled between the sound attenuation cavity (32) and the inner wall of the base (1).

9. A resistive thermal muffler base as defined in claim 1 or 2, wherein: the base (1) is also provided with a safety valve interface (12) and an unloading valve interface (13), and the safety valve interface (12) and the unloading valve interface (13) are communicated with the silencing cavity (32).

10. A resistive thermal muffler base as defined in claim 1 or 2, wherein: the base (1) on still be provided with temperature measurement interface (14), pressure measurement interface (15), condensation and discharge interface (16), temperature measurement interface (14), pressure measurement interface (15) and noise elimination chamber (32) intercommunication, condensation discharge interface (16) and noise elimination chamber (32) bottom intercommunication.