Noise reduction door plate mounted on air compressor

Abstract

The utility model discloses a noise reduction door plate mounted on an air compressor, belongs to the technical field of air compressors, and aims to solve the problems that a fan air inlet outside a box body of the air compressor is loud in noise and is inconvenient to effectively weaken the noise under the condition of not influencing maintenance. A dustproof net is arranged in the inner area of the air inlet cover door, a noise reduction mechanism is arranged in the air inlet cover door, and the noise reduction mechanism comprises an air filter plate, a first porous sound absorption layer and a second porous sound absorption layer; through the noise reduction mechanism, the ventilation quantity and the airflow intensity of air before the air is introduced into the fan are reduced under the action of the air filter plate, so that stronger airflow noise generated when the air is introduced into the fan is reduced; meanwhile, the first porous sound absorption layer and the second porous sound absorption layer which are arranged in front of and behind the air filter plate and in front of the dustproof net and the fan blades can play a sound absorption role and further reduce the noise transmission intensity at the air inlet of the air compressor.

Description

TECHNICAL FIELD

[0001] The utility model belongs to air compressor technical field, concretely relates to a kind of noise reduction door plate installed on air compressor. BACKGROUND

[0002] Air compressor is a kind of equipment to compress gas. Air compressor is similar in structure to water pump. Most air compressors are reciprocating piston type, rotary vane or rotary screw, and noise is a common problem of air compressor, which not only affects the working environment, but also may cause adverse effects on the physical and mental health of employees.

[0003] Currently, in addition to the conventional mechanical noise, when the air compressor is running, strong airflow noise will also be generated when air passes through the fan inlet, which is caused by the high-speed flow and pressure change of airflow. A dust screen is generally arranged at the fan inlet of the air compressor. When strong airflow is introduced, it will impact the dust screen and generate noise. In addition, the high-speed rotation of the fan assembly also generates additional noise. These make the fan inlet part outside the existing air compressor box body have the disadvantages of high noise and inconvenience to effectively weaken the noise without affecting maintenance.

[0004] Therefore, there is a need for a noise reduction door plate installed on an air compressor to solve the problem of high noise at the fan inlet part outside the air compressor box body and inconvenience to effectively weaken the noise without affecting maintenance in the prior art. SUMMARY

[0005] The utility model aims at providing a noise reduction door plate installed on an air compressor to solve the problem raised in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a noise reduction door plate installed on an air compressor, comprising an air inlet cover door, a dust screen is arranged in the inner region of the air inlet cover door, a noise reduction mechanism is arranged in the inner region of the air inlet cover door, the noise reduction mechanism comprises an air filter plate, a first porous sound absorption layer and a second porous sound absorption layer, the air filter plate is arranged in the inner region of the air inlet cover door, the first porous sound absorption layer is arranged on the wall in front of the air filter plate in the inner region of the air inlet cover door, the second porous sound absorption layer is arranged on the wall between the air filter plate and the dust screen in the inner region of the air inlet cover door, a maintenance gap mechanism is arranged on the outer region of the air inlet cover door, the maintenance gap mechanism comprises a positioning bracket, a lifting slide and a movable lug, the positioning bracket is arranged on the outer box body of the air compressor, the lifting slide is slidably connected to the inner region of the positioning bracket, and the movable lug is fixedly connected to the two ends of the lifting slide close to the inner wall of the positioning bracket.

[0007] It needs to be explained in the scheme that the inner wall of the air inlet cover door is fixed with a second mounting ring, and the side edge of the dust screen is fixed on the inner ring wall of the second mounting ring.

[0008] It is further worth mentioning that the surface of the air filter plate is provided with an air passing port, the outer edge of the air filter plate is fixed with a first mounting ring, and the first mounting ring is fixed on the inner wall of the air inlet cover door.

[0009] It needs to be further explained that the rear end face of the second mounting ring is fixed with a buffer gasket, and the buffer gasket is attached to the surface of the air compressor outer box.

[0010] As a preferred embodiment, the buffer gasket extends out of the rear end port of the air inlet cover door, and the dust screen is arranged inside the rear end port of the air inlet cover door.

[0011] As a preferred embodiment, a locking stud is fixed at the center of one end face of the movable lug, a locking knob is threadedly sleeved on the surface of the locking stud, and an anti-skid gasket is fixed on one end face of the locking knob.

[0012] As a preferred embodiment, a lifting sliding groove is formed in the inner wall of the positioning bracket, and the movable lug is movably arranged in the lifting sliding groove of the positioning bracket.

[0013] As a preferred embodiment, a mounting hole is formed in the convex edge of the rear end face of the positioning bracket, the circular arc wall of the positioning bracket is matched with the air inlet cover door, and the upper end of the air inlet cover door is fixed on the lower part of the lifting sliding plate.

[0014] Compared with the prior art, the noise reduction door plate mounted on the air compressor provided by the utility model has at least the following beneficial effects:

[0015] (1) By arranging the noise reduction mechanism, the air before the fan is reduced in ventilation volume and air flow intensity under the action of the air filter plate, so that the strong air flow noise generated when the air is introduced into the fan is reduced, and the first porous sound absorbing layer and the second porous sound absorbing layer arranged in front of and behind the air filter plate and in front of the dust screen and the fan blade can absorb sound and further reduce the noise transmission intensity at the air compressor air inlet.

[0016] (2) By arranging the maintenance and positioning mechanism, the dust screen of the air compressor fan is combined with the air inlet cover door during use, so that the height of the air inlet cover door can be flexibly adjusted to move out of the air compressor box area, thereby providing conditions for the turnover and cleaning of the dust screen and the maintenance of the air compressor fan assembly. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 It is a whole structure perspective view of the noise reduction door plate mounted on the air compressor of the present application;

[0019] Figure 2 It is a positioning bracket section structure perspective view of the noise reduction door plate mounted on the air compressor of the present application;

[0020] Figure 3 It is an air filter plate structure perspective view of the noise reduction door plate mounted on the air compressor of the present application;

[0021] Figure 4 It is an air filter plate split structure perspective view of the noise reduction door plate mounted on the air compressor of the present application.

[0022] In the figure: 1, air inlet cover door; 2, air filter plate; 3, first mounting ring; 4, first porous sound absorbing layer; 5, second porous sound absorbing layer; 6, second mounting ring; 7, buffer washer; 8, dust screen; 9, lifting slide plate; 10, movable lug; 11, locking stud; 12, locking knob; 13, anti-skid gasket; 14, positioning bracket; 15, lifting sliding groove; 16, mounting hole. DETAILED DESCRIPTION

[0023] The present application will be further described below in combination with the embodiments.

[0024] Please refer to Figures 1-4 The present application provides a noise reduction door plate mounted on an air compressor, comprising an air inlet cover door 1, a dust screen 8 is arranged in the inner region of the air inlet cover door 1, a noise reduction mechanism is arranged in the inner region of the air inlet cover door 1, the noise reduction mechanism comprises an air filter plate 2, a first porous sound absorbing layer 4 and a second porous sound absorbing layer 5, the air filter plate 2 is arranged in the inner region of the air inlet cover door 1, the first porous sound absorbing layer 4 is arranged on the wall in front of the air filter plate 2 in the inner region of the air inlet cover door 1, the second porous sound absorbing layer 5 is arranged on the wall between the air filter plate 2 and the dust screen 8 in the inner region of the air inlet cover door 1, a maintenance allowing mechanism is arranged on the outer region of the air inlet cover door 1, the maintenance allowing mechanism comprises a positioning bracket 14, a lifting slide plate 9 and a movable lug 10, the positioning bracket 14 is arranged on the outer box of the air compressor, the lifting slide plate 9 is slidingly connected to the inner region of the positioning bracket 14, and the movable lug 10 is fixedly connected to the two ends of the lifting slide plate 9 close to the inner wall of the positioning bracket 14.

[0025] Further as Figure 1 , Figure 2 and Figure 3 illustrated, it is worth noting that the inner wall of the air inlet cover door 1 is fixed with the second mounting ring 6, and the side edge of the dust screen 8 is fixed on the inner ring wall of the second mounting ring 6.

[0026] Further as Figure 3 illustrated, it is worth noting that the surface of the air filter plate 2 is provided with an air passing port, and the outer edge of the air filter plate 2 is fixed with the first mounting ring 3, and the first mounting ring 3 is fixed on the inner wall of the air inlet cover door 1.

[0027] The scheme has the following working process: before use, the positioning bracket 14 is fixed on the air compressor outer box body by screwing into the mounting hole 16, at this time the air inlet cover door 1 is located in front of the air compressor fan air inlet, so that the air before the fan is reduced in air volume and airflow intensity under the action of the air filter plate 2, thereby reducing the strong airflow noise generated when the air is introduced into the fan, and the first porous sound absorbing layer 4 and the second porous sound absorbing layer 5 located in front of and behind the air filter plate 2 and in front of the fan blade can play a sound absorbing role and further reduce the noise transmission intensity at the air inlet of the air compressor.

[0028] According to the above working process, it can be known that the air before the fan is reduced in air volume and airflow intensity under the action of the air filter plate 2, thereby reducing the strong airflow noise generated when the air is introduced into the fan, and the first porous sound absorbing layer 4 and the second porous sound absorbing layer 5 located in front of and behind the air filter plate 2 and in front of the fan blade can play a sound absorbing role and further reduce the noise transmission intensity at the air inlet of the air compressor.

[0029] Further as Figure 1 , Figure 2 and Figure 4 illustrated, it is worth noting that the rear end face of the second mounting ring 6 is fixed with the buffer gasket 7, and the buffer gasket 7 is attached to the surface of the air compressor outer box body.

[0030] Further as Figure 4 illustrated, it is worth noting that the buffer gasket 7 extends out of the rear end port of the air inlet cover door 1, and the dust screen 8 is arranged inside the rear end port of the air inlet cover door 1. During use, the locking knob 12 is loosened along the locking stud 11, so that the lifting slide plate 9 is unlocked, and the lifting slide plate 9 can slide upward along the positioning bracket 14 to adjust the height and angle, and the dust screen 8 of the air compressor fan is combined with the air inlet cover door 1, so that the height of the air inlet cover door 1 can be adjusted to move out of the air compressor box body area, thereby providing conditions for cleaning the dust screen 8 and overhauling the air compressor fan assembly.

[0031] Further as Figure 1 It is worth noting that one end face of the movable convex block 10 is fixed with a locking stud 11, the surface of the locking stud 11 is threadedly sleeved with a locking knob 12, and one end face of the locking knob 12 is fixed with an anti-skid pad 13.

[0032] Further as Figure 1 It is worth noting that the inner wall of the positioning bracket 14 is provided with a lifting sliding groove 15, and the movable convex block 10 is movably arranged in the lifting sliding groove 15 of the positioning bracket 14.

[0033] Further as Figure 1 It is worth noting that the convex edge of the rear end face of the positioning bracket 14 is provided with a mounting hole 16, the arc wall of the positioning bracket 14 is matched with the air inlet cover door 1, and the upper end of the air inlet cover door 1 is fixed to the lower part of the lifting sliding plate 9.

[0034] In summary: the air before the fan is reduced in air flow and air flow intensity under the action of the air filter plate 2, so as to reduce the strong air flow noise generated when the air is introduced into the fan, and the first porous sound absorption layer 4 and the second porous sound absorption layer 5 arranged in front of the air filter plate 2, the dust screen 8 and the fan blades can play a sound absorption role and further reduce the noise transmission intensity at the air compressor air inlet; in the use process, the dust screen 8 of the air compressor fan is combined with the air inlet cover door 1, so that the height of the air inlet cover door 1 can be flexibly adjusted to move out of the air compressor box area, thereby providing conditions for the turnover cleaning of the dust screen 8 and the maintenance of the air compressor fan assembly.

[0035] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A noise-reducing door panel installed on an air compressor, comprising an air inlet hood (1), characterized in that: The air inlet hood (1) is equipped with a dustproof net (8) in its internal area. The air inlet hood (1) is also equipped with a noise reduction mechanism, which includes an air filter plate (2), a first porous sound-absorbing layer (4), and a second porous sound-absorbing layer (5). The air filter plate (2) is located inside the air inlet hood (1). The first porous sound-absorbing layer (4) is located on the wall inside the air inlet hood (1) in front of the air filter plate (2). The second porous sound-absorbing layer (5) is located inside the air inlet hood (1). On the wall between the air filter plate (2) and the dustproof net (8), an inspection and clearance mechanism is provided on the outside of the air inlet door (1). The inspection and clearance mechanism includes a positioning bracket (14), a lifting slide plate (9), and a movable protrusion (10). The positioning bracket (14) is set on the outer casing of the air compressor. The lifting slide plate (9) is slidably connected to the inner area of ​​the positioning bracket (14). The movable protrusion (10) is fixedly connected to both ends of the lifting slide plate (9) near the inner wall of the positioning bracket (14).

2. A noise-reducing door panel installed on an air compressor according to claim 1, characterized in that: The inner wall of the air inlet hood (1) is fixed with a second mounting ring (6), and the side edge of the dustproof net (8) is fixed on the inner ring wall of the second mounting ring (6).

3. A noise-reducing door panel installed on an air compressor according to claim 2, characterized in that: The air filter plate (2) has an air passage opening on its surface, and a first mounting ring (3) is fixed to the outer edge of the air filter plate (2). The first mounting ring (3) is fixed to the inner wall of the air inlet hood (1).

4. A noise-reducing door panel installed on an air compressor according to claim 3, characterized in that: A buffer washer (7) is fixed to the rear end face of the second mounting ring (6), and the buffer washer (7) is attached to the surface of the outer casing of the air compressor.

5. A noise-reducing door panel installed on an air compressor according to claim 4, characterized in that: The buffer gasket (7) extends out of the rear port of the air inlet hood (1), and the dustproof net (8) is disposed inside the rear port of the air inlet hood (1).

6. A noise-reducing door panel installed on an air compressor according to claim 5, characterized in that: A locking stud (11) is fixed at the center of one end face of the movable protrusion (10), and a locking knob (12) is threaded on the surface of the locking stud (11), and an anti-slip pad (13) is fixed on one end face of the locking knob (12).

7. A noise-reducing door panel installed on an air compressor according to claim 6, characterized in that: The inner wall of the positioning bracket (14) is provided with a lifting slide groove (15), and the movable protrusion (10) is movably arranged in the lifting slide groove (15) of the positioning bracket (14).

8. A noise-reducing door panel installed on an air compressor according to claim 7, characterized in that: The positioning bracket (14) has a mounting hole (16) on the convex edge of its rear end face. The arc wall of the positioning bracket (14) matches the air inlet hood (1). The upper end of the air inlet hood (1) is fixed to the lower part of the lifting slide plate (9).

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