Air inlet silencer for screw air compressor

Abstract

The utility model discloses an air inlet silencer for a screw air compressor, belongs to the technical field of air compressors, and mainly solves the technical problems that an air inlet silencer in the prior art is inconvenient to fix and assemble on the surface of an air inlet pipe and is also difficult to disassemble and replace, inconvenience is brought to use of workers, and the service life of the air inlet silencer is influenced. The air inlet silencing device comprises two installation discs, the top of one installation disc is provided with an assembly cover plate, the assembly cover plate is annular, an air inlet pipe is fixed to the inner surface of the assembly cover plate, the surfaces, close to each other, of the two installation discs are fixedly connected with a fixed shell, and the fixed shell is fixedly connected with the air inlet pipe. And the cross section of the fixed shell is annular, two mounting grooves are formed in one mounting disc in a penetrating mode, and dismounting assemblies are arranged in the mounting grooves.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, and more specifically, to an air intake silencer for a screw air compressor. Background Art

[0002] The screw air compressor is an oil-injected single-stage twin-screw compressor, which is divided into single-screw air compressor and twin-screw air compressor. It adopts high-efficiency pulley transmission to drive the main engine to rotate for air compression, and cools the compressed air in the main engine by oil injection. The air and oil mixed gas discharged by the main engine is separated through coarse and fine separation to separate the oil in the compressed air, and finally obtain clean compressed air. The screw air compressor is a large-scale equipment. When the body is taking in air, the air will flow rapidly in the intake pipe. The violent vibration caused by the air flow causes huge noise at the intake pipe of the screw air compressor, and an intake silencer is required to silence the intake pipe.

[0003] However, there are various types of air intake silencers in the prior art. For example, utility model patent CN219605571U relates to an air intake silencer for a screw air compressor. The utility model is provided with a silencer structure, which includes a circularly distributed reflector plate. The top and bottom of the reflector plate are respectively fixedly connected to two mounting plates. Two adjacent reflectors are arranged in an eight-shaped shape. The support tube is provided with evenly distributed sound discharge holes. The utility model can reduce the noise generated by the air intake pipe multiple times, effectively perform silencer treatment on the air intake pipe, reduce the generation of noise, and reduce the problem of noise pollution in the air intake pipe when the air compressor is working.

[0004] Although the air intake silencer can reduce the noise pollution generated at the air intake pipe, the device is not convenient to be fixedly assembled on the surface of the air intake pipe, and is also difficult to disassemble and replace, which brings inconvenience to the staff and cannot meet the current needs of people. In order to avoid this phenomenon, it is necessary to design an air intake silencer for a screw air compressor. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In order to achieve the above object, the utility model provides an air intake silencer for a screw air compressor, which is achieved by the following specific technical means:

[0007] An air intake silencer for a screw air compressor comprises a mounting plate, wherein two mounting plates are installed, wherein an assembly cover plate is arranged on the top of one of the mounting plates, and the assembly cover plate is annular, an air intake pipe is fixed to the inner surface of the assembly cover plate, and a fixed shell is fixedly connected to the surfaces of the two mounting plates close to each other, and the cross-sectional shape of the fixed shell is annular, and two mounting grooves are arranged through the interior of one of the mounting plates, and a disassembly assembly component is arranged inside the mounting groove.

[0008] Preferably, the disassembly and assembly components are plug-in columns, card slots, movable rods, compression springs, adjustment buttons and matching holes. The inside of the installation slots are slidably installed with movable rods. Two compression springs are fixedly connected to the inside of the installation slots, and one end of the compression spring is fixed to one side of the movable rod. The end of the movable rod away from the compression spring is fixedly connected to the adjustment button.

[0009] Preferably, two plug-in columns are fixedly connected to the bottom of the assembly cover plate, and two matching holes are provided on the top of one of the mounting plates. The assembly cover plate is pressed against the mounting plate so that the plug-in columns are inserted into the matching holes. The surfaces of the plug-in columns are provided with card grooves, and the card grooves match the ends of the movable rods. The plug-in columns are inserted into the matching holes so that the ends of the movable rods are inserted into the card grooves.

[0010] Preferably, a threaded groove is provided at the bottom of the other mounting plate, a threaded sleeve is detachably provided inside the threaded groove, and two fixing plates are fixedly connected to the lower surface of the threaded sleeve.

[0011] Preferably, a second sealing ring is fixed to the outer surface of the air intake pipe, a first sealing ring is sleeved on the outer surface of the air intake pipe, and the first sealing ring is located in the thread groove.

[0012] Preferably, the inner wall of the fixed shell is provided with sound insulation felt, the surfaces of the two mounting plates close to each other are fixed with a hollow shell, a vacuum chamber is provided inside the hollow shell, and a layer of sound-absorbing cotton is provided on the inner surface of the hollow shell.

[0013] Preferably, a sound absorbing tube is fixedly connected to the surfaces of the two mounting plates close to each other, and the sound absorbing tube is fixed in the hollow shell. The inner surface of the sound absorbing tube is penetrated with a plurality of sound absorbing holes, the air intake pipe penetrates the sound absorbing tube, and the interiors of the two mounting plates are penetrated with through holes.

[0014] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0015] During the assembly of the device, the air intake pipe is passed through the two mounting plates so that the assembly cover is fitted with one of the mounting plates, and then the adjustment button is pressed to insert the two plug-in columns into the matching holes so that the slot corresponds to the movable rod. After that, the adjustment button is released and the movable rod is driven to reset by the resilience of the compression spring so that the end of the movable rod is embedded in the slot to fix the assembly cover, thereby facilitating the fixed assembly of the device on the air intake pipe. Conversely, when the adjustment button is pressed, the device can be disassembled and replaced, which brings convenience to the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 It is a partial schematic diagram of the utility model;

[0020] Figure 4 It is a schematic diagram of the disassembly of the mounting plate and the assembly cover;

[0021] Figure 5 It is a schematic diagram of the structure enlarged at A;

[0022] Figure 6 It is a structural schematic diagram of the threaded sleeve.

[0023] In the figure: 1. mounting plate; 2. fixed shell; 3. assembly cover plate; 4. air intake pipe; 5. plug-in column; 6. slot; 7. movable rod; 8. compression spring; 9. adjustment button; 10. matching hole; 11. threaded groove; 12. threaded sleeve; 13. first sealing ring; 14. second sealing ring; 15. fixing plate; 16. mounting groove; 17. sound insulation felt; 18. hollow shell; 19. vacuum chamber; 20. sound-absorbing cotton; 21. sound-absorbing tube; 22. through hole. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0027] like Figure 2 , Figure 4 as well as Figure 5 As shown, it is a structural schematic diagram of an air intake silencer for a screw air compressor in this embodiment. The air intake silencer is used to reduce and silence the huge noise generated at the air intake of the screw air compressor. The air intake silencer includes a mounting plate 1. The number of mounting plates 1 is two. The surfaces of the two mounting plates 1 close to each other are fixedly connected with a fixed shell 2. Two mounting grooves 16 are arranged through the interior of one of the mounting plates 1. An assembly cover plate 3 is arranged on the top of one of the mounting plates 1. Two plug-in columns 5 are fixedly connected to the bottom of the assembly cover plate 3. The surfaces of the plug-in columns 5 are provided with card grooves 6, and the card grooves 6 match the ends of the movable rods 7. The interiors of the mounting grooves 16 are slidably installed with movable rods 7. Two compression springs 8 are fixedly connected to the interiors of the mounting grooves 16, and one end of the compression spring 8 is fixed to one side of the movable rod 7. An adjustment button 9 is fixedly connected to the end of the movable rod 7 away from the compression spring 8. Two matching holes 10 are provided on the top of each mounting disk 1. The assembly cover plate 3 is pressed onto the mounting disk 1 so that the plug-in column 5 is inserted into the matching hole 10. The plug-in column 5 is inserted into the matching hole 10 so that the end of the movable rod 7 is stuck in the slot 6. During the assembly of the device, the air intake pipe 4 is first passed through the two mounting disks 1 so that the assembly cover plate 3 fixed to the outer surface of the air intake pipe 4 fits with one of the mounting disks 1. Then the adjustment button 9 is pressed to insert the two plug-in columns 5 into the matching holes 10 of the mounting disk 1 so that the slot 6 corresponds to the movable rod 7. Then the adjustment button 9 is released and the movable rod 7 is reset by utilizing the resilience of the compression spring 8 so that the end of the movable rod 7 is slowly embedded in the slot 6 to fix the assembly cover plate 3, thereby facilitating the fixed assembly of the device on the air intake pipe 4. Conversely, when the adjustment button 9 is pressed, the device can be disassembled and replaced, which brings convenience to the use of the staff to meet the current people's use needs.

[0028] It is worth noting that the plug-in column 5, the slot 6, the movable rod 7, the compression spring 8, the adjustment button 9 and the matching hole 10 in this embodiment constitute a disassembly assembly, and the disassembly assembly is used to assemble and disassemble the intake silencer device and the intake pipe 4.

[0029] In addition, if Figure 2 and Figure 6 As shown, in this embodiment, a threaded groove 11 is provided at the bottom of another mounting disk 1, and a threaded sleeve 12 is detachably provided inside the threaded groove 11. Two fixing plates 15 are fixedly connected to the lower surface of the threaded sleeve 12. A second sealing ring 14 is fixed to the outer surface of the air intake pipe 4. A first sealing ring 13 is sleeved on the outer surface of the air intake pipe 4, and the first sealing ring 13 is located in the threaded groove 11. When one end of the air intake pipe 4 passes through the other mounting disk 1, the first sealing ring 13 is first sleeved on the outer surface of the air intake pipe 4 so that the first sealing ring 13 is located in the threaded groove 11, and then the threaded sleeve 12 is tightened to seal the mounting disk 1 to prevent external dust from entering the fixed shell 2 from the gap, thereby ensuring the silencing effect of the device.

[0030] like Figure 2 and Figure 4 As shown, in this embodiment, the cross-sectional shape of the fixed shell 2 is annular, the assembling cover plate 3 is annular, and the air intake pipe 4 is fixed to the inner surface of the assembling cover plate 3 .

[0031] like Figure 3 As shown, in this embodiment, a sound insulation felt 17 is provided on the inner wall of the fixed shell 2, a hollow shell 18 is fixed on the surfaces of the two mounting plates 1 close to each other, a vacuum chamber 19 is provided inside the hollow shell 18, and a layer of sound-absorbing cotton 20 is provided on the inner surface of the hollow shell 18. The sound-absorbing cotton 20 is firstly used to absorb the noise generated by the intake pipe 4, and through the setting of the hollow shell 18 and the vacuum chamber 19, the effect of vacuum that cannot transmit sound is utilized to block the noise, and with the use of the sound insulation felt 17, the noise transmitted inside is further isolated, thereby completing the silencing operation of the intake pipe 4.

[0032] like Figure 1 and Figure 3 As shown, in this embodiment, the surfaces of the two mounting plates 1 close to each other are fixedly connected with a sound absorbing tube 21, and the sound absorbing tube 21 is fixed in the hollow shell 18. The inner surface of the sound absorbing tube 21 is penetrated with a plurality of sound absorbing holes, the air intake pipe 4 penetrates the sound absorbing tube 21, and the interiors of the two mounting plates 1 are penetrated with through holes 22.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air intake silencer for a screw air compressor, comprising a mounting plate (1), wherein the mounting plates (1) are installed in two numbers, wherein an assembly cover plate (3) is arranged on the top of one of the mounting plates (1), and the assembly cover plate (3) is annular, and an air intake pipe (4) is fixed to the inner surface of the assembly cover plate (3), characterized in that: The surfaces of the two mounting plates (1) close to each other are fixedly connected with a fixed shell (2), and the cross-sectional shape of the fixed shell (2) is annular. Two mounting grooves (16) are provided through the interior of one of the mounting plates (1), and a disassembly assembly is provided inside the mounting groove (16).

2. The air intake silencer for a screw air compressor according to claim 1, characterized in that: The disassembly and assembly components include a plug-in column (5), a card slot (6), a movable rod (7), a compression spring (8), an adjustment button (9) and a matching hole (10); the movable rod (7) is slidably installed inside the installation slot (16); two compression springs (8) are fixedly connected inside the installation slot (16), and one end of the compression spring (8) is fixed to one side of the movable rod (7); and the end of the movable rod (7) away from the compression spring (8) is fixedly connected to the adjustment button (9).

3. The air intake silencer for a screw air compressor according to claim 1, characterized in that: Two plug-in columns (5) are fixedly connected to the bottom of the assembly cover plate (3), and two matching holes (10) are provided on the top of one of the mounting plates (1). The assembly cover plate (3) is pressed onto the mounting plate (1) so that the plug-in columns (5) are inserted into the matching holes (10). The surfaces of the plug-in columns (5) are provided with card slots (6), and the card slots (6) match the ends of the movable rods (7). The plug-in columns (5) are inserted into the matching holes (10) so that the ends of the movable rods (7) are carded into the card slots (6).

4. The air intake silencer for a screw air compressor according to claim 1, characterized in that: A threaded groove (11) is provided at the bottom of the other mounting plate (1), a threaded sleeve (12) is detachably provided inside the threaded groove (11), and two fixing plates (15) are fixedly connected to the lower surface of the threaded sleeve (12).

5. The air intake silencer for a screw air compressor according to claim 1, characterized in that: A second sealing ring (14) is fixed on the outer surface of the air intake pipe (4), a first sealing ring (13) is sleeved on the outer surface of the air intake pipe (4), and the first sealing ring (13) is located in the thread groove (11).

6. The air intake silencer for a screw air compressor according to claim 1, characterized in that: The inner wall of the fixed shell (2) is provided with a sound insulation felt (17), the surfaces of the two mounting plates (1) close to each other are fixed with a hollow shell (18), a vacuum chamber (19) is provided inside the hollow shell (18), and a layer of sound absorbing cotton (20) is provided on the inner surface of the hollow shell (18).

7. The air intake silencer device for a screw air compressor according to claim 1, characterized in that: A sound absorbing tube (21) is fixedly connected to surfaces of the two mounting plates (1) that are close to each other, and the sound absorbing tube (21) is fixed in the hollow shell (18). The inner surface of the sound absorbing tube (21) is penetrated by a plurality of sound absorbing holes, the air intake pipe (4) penetrates the sound absorbing tube (21), and the interiors of the two mounting plates (1) are penetrated by through holes (22).

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