Low-noise screw air compressor

Abstract

The utility model discloses a low-noise screw air compressor, which belongs to the technical field of air compressors, and comprises a screw air compressor, a sound insulation cover is arranged on the outer side of the screw air compressor, the sound insulation cover comprises side plates, a top plate, a vertical connecting piece and a horizontal connecting piece, the side plates comprise two groups of long side plates and two groups of short side plates, the horizontal connecting pieces comprise long connecting pieces and short connecting pieces, connecting holes are formed in the edges of the side plates and the top plate, through holes are formed in the vertical connecting pieces and the horizontal connecting pieces in a matched mode, mounting screws are connected into the through holes and the connecting holes in a threaded mode, and sound absorption strips are installed on the inner side faces of the side plates and the top plate. Openings are symmetrically formed in the side faces of the two opposite sets of side plates, rectangular grooves are formed in the portions, below the openings, of the side plates, heat dissipation windows are installed in the rectangular grooves, and through the mode, the sound insulation cover is divided into a plurality of parts, and installation and disassembly are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, and particularly relates to a low-noise screw air compressor. Background Art

[0002] An air compressor is short for an air compressor, which is a device used to compress gas. A screw air compressor refers to an air compressor in which one or two rotors (screws) with spiral grooves rotate in a cylinder to compress gas. When the screw air compressor operates, it will generate noise, mainly from the gas noise generated by the periodic intake and exhaust at the intake and exhaust ports and the noise caused by mechanical vibration.

[0003] At present, generally, mufflers are installed at the intake and exhaust ports to reduce the gas noise, and a sound insulation cover is arranged outside the air compressor body to reduce the transmission and reflection of the noise caused by mechanical vibration, so as to achieve the purpose of reducing noise. However, the existing sound insulation cover is integrally arranged, which is not convenient for the installation of the screw air compressor.

[0004] Based on this, the utility model designs a low-noise screw air compressor to solve the above problems. Content of the Utility Model

[0005] In view of the above-mentioned drawbacks of the prior art, the utility model provides a low-noise screw air compressor.

[0006] To achieve the above object, the utility model is realized through the following technical solutions:

[0007] A low-noise screw air compressor includes a screw air compressor, and a sound insulation cover is arranged outside the screw air compressor. The sound insulation cover includes side plates, a top plate, vertical connecting pieces and horizontal connecting pieces. The side plates include two groups of long side plates and two groups of short side plates. The horizontal connecting pieces include long connecting pieces and short connecting pieces. Connecting holes are formed at the edges of the side plates and the top plate. Through holes are formed on the vertical connecting pieces and the horizontal connecting pieces in a matching manner. Installation screws are threadedly connected in the through holes and the connecting holes. Sound absorption strips are installed on the inner sides of the side plates and the top plate. Opposite openings are symmetrically formed on the side faces of the two groups of side plates. A rectangular groove is formed on the side plate below the opening, and a heat dissipation window is installed in the rectangular groove.

[0008] Furthermore, the connecting holes do not penetrate through the side plates and the top plate, and the sound absorption strips are arranged at equal intervals on the inner sides of the side plates and the top plate.

[0009] Furthermore, the heat dissipation window includes a heat dissipation frame and ventilation holes. The heat dissipation frame is threadedly fixed on the side plate, and the ventilation holes are arranged in a staggered and symmetric manner on the two opposite outer side faces of the heat dissipation frame.

[0010] Further, the ventilation holes are arranged on one side of the center of the side surface of the heat dissipation frame, and an auxiliary sound absorption strip is installed on the other side of the center of one side surface of the heat dissipation frame.

[0011] Further, installation grooves are formed in the inner edges of the vertical connecting piece and the horizontal connecting piece, and sound-absorbing cotton is installed in the installation grooves.

[0012] Further, a base is arranged below the screw air compressor. Elastic columns are fixedly arranged at equal intervals on the base. A spring is arranged outside the elastic columns. A support plate is installed at the top end of the elastic column, and the screw air compressor is placed on the support plate.

[0013] Further, the base is a concave plate, and the top end of the elastic column is flush with the top end of the base.

[0014] Further, a hidden groove is formed in the top end of the base. A hidden spring is installed in the hidden groove. One end of the hidden spring is fixed to the bottom end of the support plate, and the length of the hidden spring when it is not deformed is greater than the depth of the hidden groove.

[0015] Beneficial effects

[0016] 1. By providing side plates, a top plate, vertical connecting pieces, horizontal connecting pieces, connecting holes, through holes and installation screws, the sound insulation cover is split into multiple components, which is convenient for installation and disassembly; by providing sound absorption strips, it helps the sound insulation cover to reduce noise when the screw air compressor is running.

[0017] 2. By providing a heat dissipation frame, ventilation holes and auxiliary sound absorption strips, the heat generated when the screw air compressor is running is discharged through the staggered ventilation holes for heat dissipation. At the same time, the staggered ventilation holes can prevent noise from passing through directly and are blocked to a certain extent. Under the action of the auxiliary sound absorption strips, the noise reduction effect is further improved; by providing elastic columns, springs, hidden grooves and hidden springs, when the screw air compressor vibrates during operation, the vibration is absorbed by the elastic columns, springs and hidden springs below, thereby weakening the noise generated by the vibration and cooperating with the sound insulation cover to achieve noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a three-dimensional view of the main structure of a low-noise screw air compressor of the present invention;

[0020] Figure 2 This is a three-dimensional view of the internal structure of a low-noise screw air compressor of the present utility model;

[0021] Figure 3 This is a three-dimensional view of the installation groove structure of a low-noise screw air compressor of the present utility model;

[0022] Figure 4 This is a three-dimensional view of the outer structure of the heat dissipation frame of a low-noise screw air compressor of the present utility model;

[0023] Figure 5 This is a three-dimensional view of the inner structure of the heat dissipation frame of a low-noise screw air compressor of the present utility model;

[0024] Figure 6 This is a three-dimensional view of the base structure of a low-noise screw air compressor of the present utility model;

[0025] Figure 7 This is a three-dimensional view of the support plate structure of a low-noise screw air compressor of the present utility model.

[0026] The reference numerals in the figure respectively represent:

[0027] 1, screw air compressor; 2, sound insulation cover; 3, side plate; 301, long side plate; 302, short side plate; 4, top plate; 5, vertical connecting piece; 6, horizontal connecting piece; 601, long connecting piece; 602, short connecting piece; 7, connecting hole; 8, through hole; 9, installation screw; 10, sound absorption strip; 11, opening; 12, rectangular groove; 13, heat dissipation window; 14, heat dissipation frame; 15, ventilation hole; 16, auxiliary sound absorption strip; 17, installation groove; 18, sound absorption cotton; 19, base; 20, elastic column; 21, spring; 22, support plate; 23, hidden groove; 24, hidden spring. Specific embodiments

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] The present utility model will be further described below with reference to the embodiments.

[0030] In some embodiments, please refer to the accompanying drawings of the specification Figure 1 , Figure 2 , Figure 4 and Figure 5, a low-noise screw air compressor, including a screw air compressor 1, with a sound insulation cover 2 arranged outside the screw air compressor 1. The sound insulation cover 2 includes side plates 3, a top plate 4, vertical connecting pieces 5 and horizontal connecting pieces 6. The side plates 3 include two groups of long side plates 301 and two groups of short side plates 302. The horizontal connecting pieces 6 include long connecting pieces 601 and short connecting pieces 602. Connection holes 7 are opened at the edges of the side plates 3 and the top plate 4. Through holes 8 are cooperatively opened on the vertical connecting pieces 5 and the horizontal connecting pieces 6. Installation screws 9 are threadedly connected in the through holes 8 and the connection holes 7. Sound absorption strips 10 are installed on the inner sides of the side plates 3 and the top plate 4. Opposite pairs of side faces of the side plates 3 are symmetrically provided with openings 11. The side plates 3 are provided with rectangular grooves 12 below the openings 11. Heat dissipation windows 13 are installed in the rectangular grooves 12;

[0031] In the embodiment of the present utility model, by using the horizontal connecting pieces 6 and the vertical connecting pieces 5, the installation screws 9 are threadedly connected through the through holes 8 and the connection holes 7, and the side plates 3 and the top plate 4 are installed outside the screw air compressor 1 to form the sound insulation cover 2. The external air inlet and outlet pipelines are connected to the screw air compressor 1 through the openings 11. When the screw air compressor 1 is running, preliminary sound insulation and noise reduction are carried out through the sound insulation cover 2. While being enclosed and noise-reduced, heat dissipation is carried out through the heat dissipation windows 13. Under the action of the internal sound absorption strips 10, the noise is further reduced;

[0032] In the embodiment of the present utility model, by providing the side plates 3, the top plate 4, the vertical connecting pieces 5, the horizontal connecting pieces 6, the connection holes 7, the through holes 8 and the installation screws 9, the sound insulation cover 2 is split into multiple components, which is convenient for installation and disassembly; by providing the sound absorption strips 10, it assists the sound insulation cover 2 to reduce noise when the screw air compressor 1 is running;

[0033] In an example of the present utility model, the connection holes 7 are not arranged to penetrate the side plates 3 and the top plate 4, and the sound absorption strips 10 are arranged at equal intervals on the inner sides of the side plates 3 and the top plate 4; the heat dissipation windows 13 include heat dissipation frames 14 and ventilation holes 15. The heat dissipation frames 14 are threadedly fixed on the side plates 3. The ventilation holes 15 are arranged in a staggered and symmetric manner on two opposite outer sides of the heat dissipation frames 14. The ventilation holes 15 are arranged on one side center of the side of the heat dissipation frames 14, and auxiliary sound absorption strips 16 are installed on the other side center of one side of the heat dissipation frames 14; the heat generated when the screw air compressor 1 is running is discharged through the staggered ventilation holes 15 for heat dissipation. At the same time, the staggered ventilation holes 15 can prevent the noise from directly passing through and are blocked to a certain extent, further improving the noise reduction effect;

[0034] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7As shown in the figure, installation grooves 17 are formed in the inner edges of the vertical connecting piece 5 and the horizontal connecting piece 6. Sound-absorbing cotton 18 is installed in the installation grooves 17. A base 19 is arranged below the screw air compressor 1. The base 19 is a concave plate. Elastic columns 20 are fixedly arranged on the base 19 at equal intervals. The tops of the elastic columns 20 are flush with the top of the base 19. Springs 21 are arranged outside the elastic columns 20. A support plate 22 is installed at the top of the elastic column 20. The screw air compressor 1 is placed on the support plate 22. A hidden groove 23 is formed at the top of the base 19. A hidden spring 24 is installed in the hidden groove 23. One end of the hidden spring 24 is fixed to the bottom end of the support plate 22. The length of the hidden spring 24 when it is not deformed is greater than the depth of the hidden groove 23;

[0035] In the embodiment of the present invention, the screw air compressor 1 is placed on the support plate 22. By using the horizontal connecting piece 6 and the vertical connecting piece 5, the mounting screw 9 is threadedly connected through the through hole 8 and the connecting hole 7, and the side plate 3 and the top plate 4 are installed on the outside of the screw air compressor 1 to form a sound insulation cover 2. The external air inlet and outlet pipeline is connected to the screw air compressor 1 through the opening 11. When the screw air compressor 1 is running, preliminary sound insulation and noise reduction are carried out through the sound insulation cover 2. While being enclosed and noise-reduced, heat dissipation is carried out through the heat dissipation window 13. Under the action of the internal sound-absorbing strips 10 and the external sound-absorbing cotton 18, the noise is further reduced. At the same time, when the screw air compressor 1 vibrates during operation, the vibration is absorbed by the elastic columns 20, springs 21 and hidden springs 24 below, thereby reducing the noise generated by the vibration;

[0036] In the embodiment of the present invention, by arranging the elastic columns 20, springs 21, hidden grooves 23 and hidden springs 24, when the screw air compressor 1 vibrates during operation, the vibration is absorbed by the elastic columns 20, springs 21 and hidden springs 24 below, thereby reducing the noise generated by the vibration, and noise reduction is achieved in cooperation with the sound insulation cover 2.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-noise screw air compressor, comprising a screw air compressor (1), characterized in that: A soundproof cover (2) is arranged outside the screw air compressor (1), and the soundproof cover (2) includes a side panel (3), a top panel (4), a vertical connecting piece (5) and a horizontal connecting piece (6), the side panel (3) includes two groups of long side panels (301) and two groups of short side panels (302), the horizontal connecting piece (6) includes a long connecting piece (601) and a short connecting piece (602), the edges of the side panel (3) and the top panel (4) are provided with connecting holes (7), the vertical connecting piece (5) and the horizontal connecting piece (6) are provided with connecting holes (7), and the vertical connecting piece (5) and the horizontal connecting piece (6) are provided with connecting holes (7). The connecting piece (5) and the horizontal connecting piece (6) are provided with through holes (8), the through holes (8) and the connecting holes (7) are internally threadedly connected with mounting screws (9), the inner surfaces of the side panels (3) and the top panel (4) are both provided with sound absorbing strips (10), the sides of the two groups of side panels (3) opposite to each other are symmetrically provided with openings (11), the side panels (3) are provided with rectangular grooves (12) below the openings (11), and the rectangular grooves (12) are provided with heat dissipation windows (13).

2. The low-noise screw air compressor according to claim 1, characterized in that: The connection holes (7) are not arranged to penetrate the side panels (3) and the top panel (4), and the sound absorbing strips (10) are arranged at equal intervals on the inner surfaces of the side panels (3) and the top panel (4).

3. The low-noise screw air compressor according to claim 2, characterized in that: The heat dissipation window (13) comprises a heat dissipation frame (14) and air holes (15); the heat dissipation frame (14) is threadedly fixed on the side plate (3); and the air holes (15) are staggered and symmetrically arranged on two opposite outer sides of the heat dissipation frame (14).

4. The low-noise screw air compressor according to claim 3, characterized in that: The vent hole (15) is arranged on one side of the center of the side surface of the heat dissipation frame (14), and an auxiliary sound absorbing strip (16) is installed on the other side of the center of the side surface of the heat dissipation frame (14).

5. The low-noise screw air compressor according to claim 4, characterized in that: The inner edges of the vertical connecting piece (5) and the horizontal connecting piece (6) are provided with mounting grooves (17), and sound-absorbing cotton (18) is installed in the mounting grooves (17).

6. The low-noise screw air compressor according to claim 5, characterized in that: A base (19) is arranged below the screw air compressor (1), elastic columns (20) are fixed on the base (19) at equal intervals, springs (21) are arranged on the outside of the elastic columns (20), a support plate (22) is installed on the top of the elastic column (20), and the screw air compressor (1) is placed on the support plate (22).

7. The low-noise screw air compressor according to claim 6, characterized in that: The base (19) is a concave plate, and the top of the elastic column (20) is flush with the top of the base (19).

8. The low-noise screw air compressor according to claim 7, characterized in that: A hidden groove (23) is provided at the top of the base (19), a hidden spring (24) is installed in the hidden groove (23), one end of the hidden spring (24) is fixed to the bottom end of the support plate (22), and the length of the hidden spring (24) when not deformed is greater than the depth of the hidden groove (23).

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