Silencing cover structure for compressor

Abstract

The utility model relates to the technical field of compressors, and discloses a silencing cover structure for a compressor, which comprises a mounting ring, an inner sealing box is fixedly connected to the inner wall of the mounting ring, a sound absorption material layer is fixedly connected to the inner wall of the inner sealing box, and an isolation layer is fixedly connected to the inner wall of the bottom of the inner sealing box. The inner wall of the sound absorption material layer is slidably connected with an air exhaust mechanism, and the outer portion of the mounting ring is in threaded connection with a sealing mounting mechanism. The air exhaust mechanism comprises a first piston, the outer wall of the first piston is slidably connected to the inner wall of the sound absorption material layer, the outer side of the first piston is sleeved with a rubber ring, the top of the piston is fixedly connected with a first driving column, and the inner wall of the sound absorption material layer is fixedly connected with an air exhaust pipe. According to the utility model, the silencing effect of the silencing cover is enhanced in a vacuumizing manner, so that the sound transmission is blocked to a great extent, the silencing capability of the silencing cover is remarkably improved, and the noise interference generated by the operation of the compressor is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to compressor technical field especially relates to the sound cover structure for compressor. BACKGROUND

[0002] The compressor is a kind of equipment that gas is compressed, makes gas pressure increase or transports gas, it increases the pressure of gas by changing the volume of gas, and is widely used in refrigeration, air conditioning, chemical industry and many other fields.Compressor mainly includes volumetric compressor (such as piston type, screw type, sliding vane type) and speed type compressor (such as centrifugal type, axial type).Volumetric compressor compresses gas by changing working cavity volume, due to the movement of internal mechanical components of volumetric compressor, such as reciprocating motion of piston, vibration and friction are generated, and these vibrations are transmitted outward in the form of sound waves to form noise.At the same time, in the process of being compressed and transported, pressure pulsation, turbulent flow and other situations may occur, which will also produce noise.The noise intensity generated by compressor is high, and the frequency range is wide, which will cause interference to working environment and surrounding personnel, but the noise generated in the process of operation of compressor can be effectively reduced by sound cover, and good working environment is provided for staff and surrounding environment.

[0003] The structure of compressor sound cover is various in prior art, and the common one has shell body, internal sound-absorbing material (such as sound-absorbing cotton) and components for fixed connection, etc., and its working principle is mainly that shell body blocks sound propagation outward, and internal sound-absorbing material utilizes its porous characteristics to absorb and attenuate the noise generated by compressor operation, reduces the diffusion of noise to external environment, so as to reduce the overall operation noise of compressor and create a relatively quiet atmosphere for use environment.

[0004] In prior art, due to the variety of compressor noise types and wide frequency range, it is difficult for sound-absorbing material to effectively absorb multiple frequency noises at the same time, and its sound-absorbing performance will be saturated when facing high-intensity noise, so that part of sound cover cannot effectively absorb and process multiple frequency noises, leading to serious noise pollution in surrounding environment, affecting people's normal work and life, thereby limiting the application range of compressor, therefore, the sound cover structure for compressor is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides the sound cover structure for compressor, aims at improving the problem that part of sound cover in prior art cannot effectively absorb multiple frequency noises.

[0006] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0007] A silencer cover structure for a compressor includes a mounting ring, the inner wall of the mounting ring being fixedly connected to an inner sealing box, the inner wall of the inner sealing box being fixedly connected to a sound-absorbing material layer, the bottom inner wall of the inner sealing box being fixedly connected to an insulating layer, the inner wall of the sound-absorbing material layer being slidably connected to an air extraction mechanism, and the outer surface of the mounting ring being threadedly connected to a sealing mounting mechanism;

[0008] The air extraction mechanism includes a piston 1, the outer wall of the piston 1 is slidably connected to the inner wall of the sound-absorbing material layer, a rubber ring is sleeved on the outer side of the piston 1, the top of the piston is fixedly connected to a driving column 1, the inner wall of the sound-absorbing material layer is fixedly connected to an air extraction pipe, the other end of the air extraction pipe is slidably connected to a driving column 2, one end of the driving column 2 is fixedly connected to a piston 2, the inner wall of the air extraction pipe is fixedly connected to an air intake assembly, and the interior of the air extraction pipe is fixedly connected to an exhaust assembly;

[0009] As a further description of the above technical solution:

[0010] The air intake assembly includes a fixed ring, the outer wall of the fixed ring is fixedly connected to the inner wall of the air extraction pipe, the inner wall of the fixed ring is slidably connected to an air intake valve, and the outer surface of the air intake valve is provided with a plurality of air intake holes;

[0011] As a further description of the above technical solution:

[0012] The exhaust assembly includes an exhaust pipe, one end of which is fixedly connected to the inside of the exhaust pipe, an exhaust valve is slidably connected to the inner wall of the exhaust pipe, a plurality of exhaust holes are opened on the outside of the exhaust valve, and a sealing ring is fixedly connected to the outer wall of the exhaust pipe;

[0013] As a further description of the above technical solution:

[0014] The sealing installation mechanism includes two installation nails, the outer parts of the two installation nails are connected to the inside of the installation ring through threads, a rubber ring is sleeved on the outer side of the bottom of the installation nails, the outer side of the installation ring is provided with threads, the bottom of the installation ring is fixedly connected to the second sealing ring, the top of the inner sealing box is fixedly connected to the sliding ring, and the outer side of the sliding ring is provided with a fastening ring;

[0015] As a further description of the above technical solution:

[0016] The outer side of the rubber ring contacts the inner wall of the sound-absorbing material layer, and the outer wall of the second piston is slidably connected to the inner wall of the exhaust pipe;

[0017] As a further description of the above technical solution:

[0018] The outer diameter of the air inlet valve is equal to the inner diameter of the fixing ring;

[0019] As a further description of the above technical solution:

[0020] The outer diameter of the exhaust valve is equal to the inner diameter of the exhaust pipe;

[0021] As a further description of the above technical solution:

[0022] The outer wall of the driving column 1 is slidably connected to the inner wall of the sliding ring.

[0023] The utility model has the following beneficial effects:

[0024] 1. In the utility model, by pulling the driving column 1 upward to drive the piston 1 to slide, the pressure of the space below the piston 2 changes, and the pressure difference is used to first allow air to enter the exhaust pipe, and then the piston 2 is pushed to change the pressure of the exhaust pipe to realize the corresponding action of the inlet valve and the outlet valve to exhaust. The operation is repeated to empty the air inside the silencer cover to form a vacuum, and the principle of vacuum does not transmit sound is used to achieve efficient silencer. The silencer effect of the silencer cover is enhanced by vacuuming, thereby greatly blocking the sound propagation, significantly improving the silencer ability of the silencer cover, reducing the noise interference generated by the operation of the compressor, and helping to extend the service life of related equipment.

[0025] 2. In the present invention, the outer thread of the mounting ring is initially docked with the compressor by rotating the silencer cover, and then the mounting nail is rotated to bring the mounting ring close to the mounting position. During this period, the rubber ring and the sealing ring play the role of buffering seal and enhancing seal respectively. At the same time, the sliding ring provides support for the driving column 1, and the fastening ring fixes its position to ensure the normal operation of the exhaust mechanism, thereby achieving efficient sealing of the mounting structure of the silencer cover, thereby preventing the internal noise of the compressor from leaking out through the mounting structure, and preventing external impurities, water vapor, etc. from entering the interior of the silencer cover to cause rust inside the silencer cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional schematic diagram of the silencer cover structure for a compressor proposed by the present invention;

[0027] Figure 2 This is a structural schematic diagram of a piston 1 of a silencer cover structure for a compressor proposed in the present invention;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Mounting ring; 2. Inner sealing box; 3. Sound-absorbing material layer; 4. Insulation layer; 5. Drive column 1; 6. Piston 1; 7. Rubber ring; 8. Exhaust pipe; 9. Fixing ring; 10. Inlet valve; 11. Inlet hole; 12. Exhaust pipe; 13. Exhaust valve; 14. Exhaust hole; 15. Sealing ring 1; 16. Drive column 2; 17. Piston 2; 18. Sliding ring; 19. Fastening ring; 20. Mounting nail; 21. Sealing ring 2; 22. Thread. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Reference Figures 2 to 4 The utility model provides an embodiment: a silencer cover structure for a compressor, comprising a mounting ring 1, which is used to install the entire silencer cover at a designated position on the compressor. An inner sealing box 2 is fixedly connected to the inner wall of the mounting ring 1, and the inner sealing box 2 is used to carry the internal silencer structure and form a closed soundproof space. A sound-absorbing material layer 3 is fixedly connected to the inner wall of the inner sealing box 2, and the material of the sound-absorbing material layer 3 is rock wool. Rock wool is made of natural rocks such as basalt, gabbro, etc. as the main raw materials. After being melted at high temperature, it is blown into fibers by centrifugal force or high-pressure energy-carrying gas. These fibers crisscross to form many tiny gaps. When sound propagates in the pores of rock wool, it will continuously reflect, refract and scatter between the fibers and the air. At the same time, the friction between the fibers and the air causes the sound energy to gradually attenuate, thereby effectively absorbing the noise energy generated when the compressor is running, thereby reducing the intensity of the noise propagating outward.

[0034] An insulating layer 4 is fixedly connected to the bottom inner wall of the inner enclosure 2. This layer further enhances the barrier effect on the noise propagation path and reduces the transmission of noise upwards. An exhaust mechanism is slidably connected to the inner wall of the sound-absorbing material layer 3, and the external thread 22 of the mounting ring 1 is connected to the sealing mounting mechanism.

[0035] The exhaust mechanism includes a piston 6, which is used to extract air from the internal structure of the inner enclosure 2 into the internal cavity of the sound-absorbing material layer 3. The outer wall of the piston 6 is slidably connected to the inner wall of the sound-absorbing material layer 3, allowing the piston 6 to reciprocate up and down within the sound-absorbing material layer 3 to perform the exhaust operation. A rubber ring 7 is sleeved around the outer side of the piston 6. The outer side of the rubber ring 7 contacts the inner wall of the sound-absorbing material layer 3, preventing gas from leaking through the gap between the piston 6 and the inner wall of the sound-absorbing material layer 3 and ensuring a tight seal during the exhaust process. A drive column 5 is fixedly connected to the top of the piston, which is used to transmit external power to the piston 6, prompting its movement. An exhaust pipe 8 is fixedly connected to the inner wall of the sound-absorbing material layer 3, which is used to transport air from the internal cavity of the sound-absorbing material layer 3 to the outside. The other end of the exhaust pipe 8 is slidably connected to a second drive column 16, one end of which is fixedly connected to a second piston 17. The second drive column 16 is used to transmit external power to the second piston 17, thereby performing the extraction and exhaust operations through the second piston 17. The outer wall of the second piston 17 is slidably connected to the inner wall of the exhaust pipe 8 to prevent gas leakage and incomplete exhaust.

[0036] The inner wall of the exhaust pipe 8 is fixedly connected to an air intake assembly, which includes a fixing ring 9. The fixing ring 9 is used to provide a movement basis for subsequent structures. The outer wall of the fixing ring 9 is fixedly connected to the inner wall of the exhaust pipe 8, so that the fixing ring 9 can be stably installed on the inner wall of the exhaust pipe 8 to prevent gas from leaking to the outside of the exhaust pipe 8. The inner wall of the fixing ring 9 is slidably connected to an air intake valve 10. The air intake valve 10 is used to control the entry of gas, and is closed during the exhaust process so that the gas is discharged to the outside through the subsequent exhaust assembly. The outer diameter of the air intake valve 10 is equal to the inner diameter of the fixing ring 9, so that it is not easy for air to leak between the air intake valve 10 and the fixing ring 9. A plurality of air intake holes 11 are provided on the outside of the air intake valve 10. When the air intake valve 10 is opened, the air intake holes 11 transport the internal cavity of the sound-absorbing material layer 3 to the exhaust pipe 8.

[0037] An exhaust assembly is fixedly connected to the interior of the exhaust pipe 8. The exhaust assembly includes an exhaust pipe 12. The exhaust pipe 12 is used to discharge the gas inside the silencer cover into the outside air, thereby enhancing the silencer effect of the silencer cover. One end of the exhaust pipe 12 is fixedly connected to the interior of the exhaust pipe 8, so that the exhaust pipe 12 is connected to the exhaust pipe 8, facilitating subsequent exhaust operations. An exhaust valve 13 is slidably connected to the inner wall of the exhaust pipe 12. The exhaust valve 13 is used to control the exhaust of gas. The outer diameter of the exhaust valve 13 is equal to the inner diameter of the exhaust pipe 12. A sealing ring 15 is fixedly connected to the outer wall of the exhaust pipe 12. The outer diameter of the sealing ring 15 and the exhaust valve 13 are designed so that during the exhaust process of the exhaust pipe 8, the outside air cannot enter the interior of the exhaust pipe 8 and cause an impact. A plurality of exhaust holes 14 are provided on the outside of the exhaust valve 13. When the exhaust valve 13 is opened, the exhaust holes 14 come into contact with the external environment, thereby exhausting the gas inside the silencer cover.

[0038] Reference Figures 1 to 2 The sealing installation mechanism includes two mounting nails 20. The external threads 22 of the two mounting nails 20 are connected to the inside of the mounting ring 1, so that the mounting nails 20 are screwed to perform the installation and removal operations between the silencer cover structure and the compressor. A rubber ring is sleeved on the outer side of the bottom of the mounting nail 20. When the rubber ring at the bottom of the mounting nail 20 contacts the mounting part, the rubber ring will be squeezed and elastically deformed, thereby filling the tiny unevenness on the surface of the mounting part and playing a good sealing role. In addition, the rubber ring can buffer the hard contact between the mounting nail 20 and the mounting part to avoid damage to the mounting part.

[0039] The outer side of the mounting ring 1 is provided with a thread 22, which makes the connection between the mounting ring 1 and the compressor stable. The bottom of the mounting ring 1 is fixedly connected with a sealing ring 21, which contacts the mounting part over a larger area, further enhancing the sealing effect. The top of the inner sealing box 2 is fixedly connected with a sliding ring 18, which provides a stable sliding track for the driving column 15. The outer wall of the driving column 15 is slidably connected to the inner wall of the sliding ring 18. A fastening ring 19 is provided on the outer side of the sliding ring 18. After the silencer cover structure is installed, the driving column 15 can slide stably on the inner wall of the sliding ring 18 during operation, and the fastening ring 19 limits the excessive shaking of the driving column 5, ensuring the accuracy and stability of its movement, thereby ensuring the normal operation of the exhaust mechanism.

[0040] Working principle: When installing the silencer cover on the compressor, the entire silencer cover is rotated and the entire silencer cover is preliminarily connected to the compressor through the thread 22 on the outside of the mounting ring 1. Then, by rotating the mounting nail 20 and using the thread 22 of the mounting nail 20, the mounting ring 1 is gradually brought close to the installation part of the compressor. When the bottom of the mounting nail 20 contacts the installation part, the rubber ring plays a buffering and sealing role to prevent wear and gas leakage at the installation part. The sealing ring 21 at the bottom of the mounting ring 1 further enhances the sealing with the compressor installation part. The sliding ring 18 provides stable sliding support for the drive column 15, and the fastening ring 19 can fix the position of the drive column 15 to a certain extent to prevent it from excessive shaking and ensure the normal operation of the exhaust mechanism.

[0041] Then, by pulling the driving column 1 5 upward, when the driving column 1 5 moves upward, the piston 1 6 is driven to slide upward in the sound-absorbing material layer 3. At this time, the space below the piston 2 17 increases and the pressure decreases. The air in the exhaust pipe 8 is then discharged to the outside, and the air in the exhaust pipe 8 is discharged to the outside. The air in the exhaust pipe 8 is discharged to the outside, and the air in the exhaust pipe 8 is discharged to the outside. The air in the exhaust pipe 8 is discharged to the outside, and the air in the exhaust pipe 8 is discharged to the outside. The air in the exhaust pipe 8 is discharged to the outside, and the air in the exhaust pipe 8 is discharged to the outside. The air in the exhaust pipe 8 is discharged to the outside, and the air in the exhaust pipe 8 is discharged to the outside. The operation is repeated several times to exhaust the air inside the silencer cover and form a vacuum space, thereby utilizing the principle that vacuum cannot transmit sound to perform efficient sound silencing on the entire silencer cover.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A muffler cover structure for a compressor, comprising a mounting ring (1), characterized in that: The inner wall of the mounting ring (1) is fixedly connected to an inner sealing box (2), the inner wall of the inner sealing box (2) is fixedly connected to a sound-absorbing material layer (3), the bottom inner wall of the inner sealing box (2) is fixedly connected to an insulating layer (4), the inner wall of the sound-absorbing material layer (3) is slidably connected to an air extraction mechanism, and the external thread (22) of the mounting ring (1) is connected to a sealing mounting mechanism; The air extraction mechanism comprises a piston (6), the outer wall of the piston (6) is slidably connected to the inner wall of the sound-absorbing material layer (3), a rubber ring (7) is sleeved on the outer side of the piston (6), the top of the piston is fixedly connected to a driving column (5), the inner wall of the sound-absorbing material layer (3) is fixedly connected to an air extraction pipe (8), the other end of the air extraction pipe (8) is slidably connected to a driving column (16), one end of the driving column (16) is fixedly connected to a piston (17), the inner wall of the air extraction pipe (8) is fixedly connected to an air intake assembly, and the interior of the air extraction pipe (8) is fixedly connected to an exhaust assembly.

2. The muffler cover structure for a compressor according to claim 1, characterized in that: The air intake assembly comprises a fixed ring (9), the outer wall of the fixed ring (9) is fixedly connected to the inner wall of the exhaust pipe (8), the inner wall of the fixed ring (9) is slidably connected to an air intake valve (10), and a plurality of air intake holes (11) are opened on the outside of the air intake valve (10).

3. The muffler cover structure for a compressor according to claim 1, characterized in that: The exhaust assembly comprises an exhaust pipe (12), one end of the exhaust pipe (12) is fixedly connected to the inside of the exhaust pipe (8), an exhaust valve (13) is slidably connected to the inner wall of the exhaust pipe (12), a plurality of exhaust holes (14) are provided on the outside of the exhaust valve (13), and a sealing ring (15) is fixedly connected to the outer wall of the exhaust pipe (12).

4. The muffler cover structure for a compressor according to claim 1, characterized in that: The sealing installation mechanism comprises two installation nails (20), the external threads (22) of the two installation nails (20) are connected to the inside of the installation ring (1), a rubber ring is sleeved on the outside of the bottom of the installation nail (20), a thread (22) is provided on the outside of the installation ring (1), a sealing ring 2 (21) is fixedly connected to the bottom of the installation ring (1), a sliding ring (18) is fixedly connected to the top of the inner sealing box (2), and a fastening ring (19) is provided on the outside of the sliding ring (18).

5. The muffler cover structure for a compressor according to claim 1, characterized in that: The outer side of the rubber ring (7) contacts the inner wall of the sound-absorbing material layer (3), and the outer wall of the second piston (17) is slidably connected to the inner wall of the exhaust pipe (8).

6. The muffler cover structure for a compressor according to claim 2, characterized in that: The outer diameter of the air inlet valve (10) is equal to the inner diameter of the fixing ring (9).

7. The muffler cover structure for a compressor according to claim 3, characterized in that: The outer diameter of the gas outlet valve (13) is equal to the inner diameter of the exhaust pipe (12).

8. The muffler cover structure for a compressor according to claim 4, characterized in that: The outer wall of the driving column (5) is slidably connected to the inner wall of the sliding ring (18).

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