Vibration isolation device of low-noise screw machine

Abstract

The utility model relates to the technical field of vibration isolation devices, in particular to a vibration isolation device of a low-noise screw machine, which comprises a sound insulation shell and a fixed buffer component, the fixed buffer component is fixedly connected to the inner side of the sound insulation shell, a driven component is arranged on the inner side of the fixed buffer component, a ball is arranged on the inner side of the driven component, and a damper is fixedly connected to one side of the ball. A first ball groove block is arranged on one side of the damper, a supporting plate is fixedly connected to one side of the first ball groove block, a screw machine body is fixedly connected to the upper end of the supporting plate, the fixed buffering assembly comprises a first liquid oil shell, and a constant-pressure through hole is formed in the inner side of the first liquid oil shell. And meanwhile, noise directly generated by the screw machine body is preliminarily isolated, vibration transmitted by the damper of the screw machine body is absorbed, vibration transmitted by the damper to the sound insulation shell is reduced, the effects of further noise reduction and vibration isolation are achieved, and the use comfort of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration isolation devices, in particular to a vibration isolation device for a low-noise screw machine. Background Art

[0002] A screw machine, whose full name is a screw compressor, is a mechanical device used to compress gas. It mainly uses two intermeshing rotors that are similar in appearance to screws to rotate in a closed compression chamber, thereby bringing gas in from the suction port and compressing it under the action of the rotors, and finally delivering the compressed gas to the exhaust port. When the screw machine is running, vibrations will be generated due to the rotation of the rotors and the gas compression process. Effective methods are needed to reduce these vibrations. Vibrations will cause equipment to generate noise, affecting the surrounding environment and the comfort of operators. Measures need to be taken to reduce the noise level.

[0003] In order to reduce the noise of the screw compressor, the existing device places the screw compressor inside the box, uses ordinary rubber pads for vibration isolation, the compressor is placed flat on the vibration isolation pad, and a damper is used to reduce vibration and noise. When the screw compressor is working, the vibration will be transmitted to the box along the damper housing, and then a certain amount of noise will be generated between the damper and the box. Therefore, a low-noise screw machine vibration isolation device is proposed to address the above problems. Utility Model Content

[0004] The utility model aims to provide a vibration isolation device for a low-noise screw machine to solve the problem that in order to reduce the noise of the screw compressor, the existing device places the screw compressor inside a box, isolates the vibration through an ordinary rubber pad, and the compressor is placed flat on the vibration isolation pad, and a damper is used to reduce vibration and noise. When the screw compressor is working, the vibration will be transmitted to the box along the damper shell, and then a certain amount of noise will be generated between the damper and the box.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A vibration isolation device for a low-noise screw machine, comprising a sound insulation shell and a fixed buffer assembly, wherein the fixed buffer assembly is fixedly connected to the inner side of the sound insulation shell, a passive assembly is arranged on the inner side of the fixed buffer assembly, a ball is arranged on the inner side of the passive assembly, a damper is fixedly connected to one side of the ball, a first ball groove block is arranged on one side of the damper, a support plate is fixedly connected to one side of the first ball groove block, a screw machine body is fixedly connected to the upper end of the support plate, the fixed buffer assembly comprises a first liquid oil shell, a constant pressure through hole is opened on the inner side of the first liquid oil shell, a first spring telescopic rod is fixedly connected to the inner side of the first liquid oil shell, and the bottom end of the first spring telescopic rod is fixedly connected to A rubber piston is connected, a connecting folded tube is fixedly connected to the inner side of the first liquid oil shell, one end of the connecting folded tube is fixedly connected to the second liquid oil shell, the inner side of the first liquid oil shell is fixedly connected to a limited inner plate, the passive component includes a second ball groove block, one side of the second ball groove block is fixedly connected to an ear seat, one side of the ear seat is fixedly connected to an empty cylinder shell, the inner side of the empty cylinder shell is fixedly connected to a built-in column, the outer side of the built-in column is fixedly connected to a second spring telescopic rod, one side of the second spring telescopic rod is fixedly connected to a sliding column block plate, the outer side of the sliding column block plate is fixedly connected to a sealing ring, the outer side of the empty cylinder shell is fixedly connected to a hollow airbag, and an inflation port is opened on the inner side of the empty cylinder shell.

[0007] As a further optimization of the present invention, the inner side of the sound insulation shell is hollow, a through hole is provided at the upper end of the sound insulation shell, the constant pressure through hole is connected to the through hole at the upper end of the sound insulation shell, and sound insulation cotton is fixed on the inner side of the sound insulation shell.

[0008] As further optimized content of the present invention, the number of the fixed buffer components is several, the fixed buffer components correspond one to one with the passive components, the shape of the balls is spheres, the number of the balls is four groups, the number of the balls in each group is two, and the balls are fixedly connected to the two ends of the damper.

[0009] As a further optimization of the present invention, a ball groove is opened on the inner side of one end of the first ball groove block, there are four first ball groove blocks, and the ball at one end of the damper is installed on the inner side of the ball groove of the first ball groove block.

[0010] As a further optimization of the present invention, the first liquid oil shell is in the shape of a hollow cylinder, the lower end of the first liquid oil shell is opened through, the upper end of the first liquid oil shell is fixedly connected to the inner side of the upper part of the sound insulation shell, the outer side of the rubber piston is fitted with the inner side of the first liquid oil shell, and hydraulic oil is provided on the inner side of the first liquid oil shell and the bottom of the rubber piston.

[0011] As further optimized content of the present invention, the upper end of the second liquid oil shell is opened through, the diameter of the second liquid oil shell is the same as the diameter of the first liquid oil shell, the bottom end of the second liquid oil shell is fixedly connected to the inner side of the lower part of the sound insulation shell, hydraulic oil is provided on the inner side of the second liquid oil shell and the lower part of the passive component, and the interior of the second liquid oil shell is connected to the interior of the first liquid oil shell through a connecting folded pipe.

[0012] As further optimized content of the present invention, the empty cylindrical shell is installed on the inner side of the first liquid oil shell and the inner side of the second liquid oil shell, the outer side of the hollow airbag is fitted with the inner side of the first liquid oil shell, there are two hollow airbags, the hollow airbags are fixed at the upper and lower ends of the empty cylindrical shell, the outer side of the hollow airbag at the lower end is fitted with the inner side of the second liquid oil shell, the inner side of the empty cylindrical shell is hollow, the outer side of the sealing ring is fitted with the inner side of the empty cylindrical shell, the inner side of the empty cylindrical shell is connected with the inner side of the hollow airbag through the inflation port, and the inner side of the hollow airbag is hollow.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, the screw machine body is arranged inside the soundproof shell by arranging a soundproof shell, a fixed buffer component, a passive component, balls, a damper, a first ball groove block and a support plate, so as to reduce the noise generated by the screw machine body itself, and the balls play the effect of reducing the vibration of the screw machine body. When the screw machine body is working, the passive component is driven to slide inside the fixed buffer component, and the passive component and the fixed buffer component can absorb the vibration generated by the damper, and at the same time can effectively reduce the passive component and the fixed buffer component from transmitting the vibration to the soundproof shell. The device reduces the vibration of the screw machine body and preliminarily isolates the noise directly generated by the screw machine body. At the same time, it absorbs the energy of the vibration transmitted by the screw machine body through the damper, and reduces the damper from transmitting the vibration to the soundproof shell, thereby achieving further noise reduction and vibration isolation effects and improving the comfort of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the sound insulation shell structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the screw machine body of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the fixed buffer assembly of the utility model;

[0019] Figure 5 This is a schematic diagram of the passive component structure of the utility model.

[0020] In the figure: 1. sound insulation shell; 2. fixed buffer component; 21. first liquid oil shell; 22. constant pressure through hole; 23. first spring telescopic rod; 24. rubber piston; 25. connecting folding pipe; 26. second liquid oil shell; 27. limit inner plate; 3. passive component; 31. second ball groove block; 32. ear seat; 33. built-in column; 34. second spring telescopic rod; 35. sliding column block plate; 36. sealing ring; 37. inflation port; 38. hollow air bag; 39. empty cylinder shell; 4. ball; 5. damper; 6. first ball groove block; 7. support plate; 8. screw machine body. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] A vibration isolation device for a low-noise screw machine comprises a soundproof shell 1 and a fixed buffer assembly 2, wherein the fixed buffer assembly 2 is fixedly connected to the inner side of the soundproof shell 1, a passive assembly 3 is arranged on the inner side of the fixed buffer assembly 2, a ball 4 is arranged on the inner side of the passive assembly 3, a damper 5 is fixedly connected to one side of the ball 4, a first ball groove block 6 is arranged on one side of the damper 5, a support plate 7 is fixedly connected to one side of the first ball groove block 6, a screw machine body 8 is fixedly connected to the upper end of the support plate 7, the fixed buffer assembly 2 comprises a first liquid oil shell 21, a constant pressure through hole 22 is opened on the inner side of the first liquid oil shell 21, a first spring telescopic rod 23 is fixedly connected to the inner side of the first liquid oil shell 21, a rubber piston 24 is fixedly connected to the bottom end of the first spring telescopic rod 23, A connecting folded tube 25 is fixedly connected to the inner side of the first liquid oil shell 21, and one end of the connecting folded tube 25 is fixedly connected to the second liquid oil shell 26. A limited inner plate 27 is fixedly connected to the inner side of the first liquid oil shell 21. The passive component 3 includes a second ball groove block 31, and an ear seat 32 is fixedly connected to one side of the second ball groove block 31. An empty cylinder shell 39 is fixedly connected to one side of the ear seat 32. An internal column 33 is fixedly connected to the inner side of the empty cylinder shell 39, and a second spring telescopic rod 34 is fixedly connected to the outer side of the internal column 33. A sliding column block plate 35 is fixedly connected to one side of the second spring telescopic rod 34, and a sealing ring 36 is fixedly connected to the outer side of the sliding column block plate 35. A hollow air bag 38 is fixedly connected to the outer side of the empty cylinder shell 39, and an inflation port 37 is opened on the inner side of the empty cylinder shell 39.

[0025] As a further implementation of this solution, the inner side of the soundproof shell 1 is hollow, a through hole is opened at the upper end of the soundproof shell 1, the constant pressure through hole 22 is connected to the through hole at the upper end of the soundproof shell 1, and soundproof cotton is fixed on the inner side of the soundproof shell 1, which plays the effect of circulating the gas on the upper part of the first liquid oil shell 21 when the rubber piston 24 moves;

[0026] As a further implementation of the present scheme, there are a number of fixed buffer components 2, and the fixed buffer components 2 correspond to the passive components 3 one by one. The shape of the ball 4 is a sphere, and the number of the ball 4 is four groups, and the number of the ball 4 in each group is two. The ball 4 is fixedly connected to both ends of the damper 5, so that the screw machine body 8 can directly perform a shock absorbing effect when working;

[0027] As a further implementation of this solution, a ball groove is opened on the inner side of one end of the first ball groove block 6, and the number of the first ball groove blocks 6 is four. The ball 4 at one end of the damper 5 is installed on the inner side of the ball groove of the first ball groove block 6, so that the screw machine body 8 can move inside the sound insulation housing 1, thereby increasing the buffer space for the screw machine body 8;

[0028] As a further implementation of the present scheme, the first liquid oil shell 21 is in the shape of a hollow cylinder, the lower end of the first liquid oil shell 21 is through-opened, the upper end of the first liquid oil shell 21 is fixedly connected to the inner side of the upper part of the soundproof shell 1, the outer side of the rubber piston 24 is fitted with the inner side of the first liquid oil shell 21, and hydraulic oil is provided on the inner side of the first liquid oil shell 21 and the bottom of the rubber piston 24, so that the passive component 3 is conveniently installed between the first liquid oil shell 21 and the second liquid oil shell 26, and at the same time, it has the effect of reducing vibration when the passive component 3 moves;

[0029] As a further implementation of this solution, the upper end of the second liquid oil shell 26 is opened through, the diameter of the second liquid oil shell 26 is the same as the diameter of the first liquid oil shell 21, the bottom end of the second liquid oil shell 26 is fixedly connected to the inner side of the lower part of the sound insulation shell 1, the inner side of the second liquid oil shell 26 and the lower part of the passive component 3 are provided with hydraulic oil, and the interior of the second liquid oil shell 26 is connected to the interior of the first liquid oil shell 21 through the connecting folded tube 25, which plays the effect of isolating the empty cylinder shell 39, the first liquid oil shell 21 and the second liquid oil shell 26.

[0030] As a further implementation scheme of the present scheme, the empty cylindrical shell 39 is installed on the inner side of the first liquid oil shell 21 and the inner side of the second liquid oil shell 26, the outer side of the hollow airbag 38 is fitted with the inner side of the first liquid oil shell 21, there are two hollow airbags 38, the hollow airbags 38 are fixed at the upper and lower ends of the empty cylindrical shell 39, the outer side of the lower hollow airbag 38 is fitted with the inner side of the second liquid oil shell 26, the inner side of the empty cylindrical shell 39 is hollow, the outer side of the sealing ring 36 is fitted with the inner side of the empty cylindrical shell 39, the inner side of the empty cylindrical shell 39 is connected with the inner side of the hollow airbag 38 through the inflation port 37, and the inner side of the hollow airbag 38 is hollow, thereby improving the sealing degree and sealing stability between the empty cylindrical shell 39 and the first liquid oil shell 21, as well as the sealing stability between the empty cylindrical shell 39 and the second liquid oil shell 26.

[0031] Working process: When the device is in use, when the noise of the screw machine body 8 is reduced, the noise generated by the screw machine body 8 itself is reduced by the sound insulation cotton inside the sound insulation shell 1. The vibration generated by the screw machine body 8 when working is transmitted to the first ball groove block 6 through the support plate 7, and the first ball groove block 6 is transmitted to the damper 5. The damper 5 plays a role in reducing the vibration of the first ball groove block 6. The arrangement of the ball 4, the damper 5 and the first ball groove block 6 plays the effect of supporting the screw machine body 8 and at the same time playing the effect of shock absorption. Part of the vibration will be transmitted from the shell of the first ball groove block 6 to the passive component 3. In the screw machine When the main body 8 is in use, the support plate 7, the first ball groove block 6, the damper 5 and the ball 4 will drive the passive component 3 to move up and down. The second ball groove block 31 moves through the ear seat 32 to drive the empty cylinder shell 39 to move. The built-in column 33 inside the empty cylinder shell 39 supports the second spring telescopic rod 34. Under the thrust of the second spring telescopic rod 34, the sealing ring 36 seals between the sliding column block plate 35 and the empty cylinder shell 39, pushing the gas inside the empty cylinder shell 39 into the hollow airbag 38 through the inflation port 37, so as to keep the hollow airbag 38 in an expanded state and make the hollow airbag 38 expand. The airbag 38 fits with the inner side of the first liquid oil shell 21, improving the sealing degree and sealing stability between the empty cylinder shell 39 and the first liquid oil shell 21, as well as the sealing stability between the empty cylinder shell 39 and the second liquid oil shell 26. Under the gravity of the screw machine body 8, the empty cylinder shell 39 will be driven by the device to keep moving downward, so that the hydraulic oil inside the second liquid oil shell 26 can enter the first liquid oil shell 21 from the connecting folding tube 25. Under the thrust of the first spring telescopic rod 23, the rubber piston 24 can keep moving downward, so that the hydraulic oil inside the first liquid oil shell 21 can keep entering the second liquid oil shell 26. The sum of the elastic forces of the four first spring telescopic rods 23 is greater than the gravity of the screw machine body 8, so that the empty cylinder shell 39 is suspended between the first liquid oil shell 21 and the second liquid oil shell 26. Under the action of the hollow airbag 38, the empty cylinder shell 39, the first liquid oil shell 21 and the second liquid oil shell 26 are isolated from vibration. When the passive component 3 moves, the elastic force of the first spring telescopic rod 23 and the buffering of the hydraulic oil inside the first liquid oil shell 21 and the second liquid oil shell 26 can reduce the vibration of the passive component 3, thereby achieving the noise reduction effect of the device and improving the comfort of the device.

[0032] 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. A vibration isolation device for a low-noise screw machine, comprising a sound-isolating housing (1) and a fixed buffer assembly (2), characterized in that: A fixed buffer component (2) is fixedly connected to the inner side of the soundproof housing (1), a passive component (3) is arranged on the inner side of the fixed buffer component (2), a ball (4) is arranged on the inner side of the passive component (3), a damper (5) is fixedly connected to one side of the ball (4), a first ball groove block (6) is arranged on one side of the damper (5), a support plate (7) is fixedly connected to one side of the first ball groove block (6), a screw machine body (8) is fixedly connected to the upper end of the support plate (7), the fixed buffer component (2) comprises a first liquid oil shell (21), a constant pressure through hole (22) is provided on the inner side of the first liquid oil shell (21), a first spring telescopic rod (23) is fixedly connected to the inner side of the first liquid oil shell (21), a rubber piston (24) is fixedly connected to the bottom end of the first spring telescopic rod (23), and a first liquid oil shell (21) is fixedly connected to the inner side of the first liquid oil shell (21). A connecting folded tube (25), one end of which is fixedly connected to a second liquid oil shell (26), the inner side of the first liquid oil shell (21) is fixedly connected to a limiting inner plate (27), the passive component (3) comprises a second ball groove block (31), one side of the second ball groove block (31) is fixedly connected to an ear seat (32), one side of the ear seat (32) is fixedly connected to an empty cylinder shell (39), the inner side of the empty cylinder shell (39) is fixedly connected to an internal column (33), the outer side of the internal column (33) is fixedly connected to a second spring telescopic rod (34), one side of the second spring telescopic rod (34) is fixedly connected to a sliding column block plate (35), the outer side of the sliding column block plate (35) is fixedly connected to a sealing ring (36), the outer side of the empty cylinder shell (39) is fixedly connected to a hollow air bag (38), and the inner side of the empty cylinder shell (39) is provided with an inflation port (37).

2. A vibration isolation device for a low-noise screw machine according to claim 1, characterized in that: The inner side of the soundproof shell (1) is hollow, a through hole is provided at the upper end of the soundproof shell (1), the constant pressure through hole (22) is connected to the through hole at the upper end of the soundproof shell (1), and sound insulation cotton is fixed to the inner side of the soundproof shell (1).

3. The vibration isolation device for a low-noise screw machine according to claim 1, characterized in that: The number of the fixed buffer components (2) is several, and the fixed buffer components (2) correspond to the passive components (3) one by one. The balls (4) are in the shape of spheres. The number of the balls (4) is four groups, and the number of the balls (4) in each group is two. The balls (4) are fixedly connected to the two ends of the damper (5).

4. The vibration isolation device for a low-noise screw machine according to claim 1, characterized in that: A ball groove is provided on the inner side of one end of the first ball groove block (6), the number of the first ball groove blocks (6) is four, and the ball (4) at one end of the damper (5) is installed on the inner side of the ball groove of the first ball groove block (6).

5. The vibration isolation device for a low-noise screw machine according to claim 1, characterized in that: The first liquid oil shell (21) is in the shape of a hollow cylinder. The lower end of the first liquid oil shell (21) is through-opened. The upper end of the first liquid oil shell (21) is fixedly connected to the inner side of the upper part of the soundproof outer shell (1). The outer side of the rubber piston (24) is in contact with the inner side of the first liquid oil shell (21). Hydraulic oil is provided on the inner side of the first liquid oil shell (21) and the bottom of the rubber piston (24).

6. The vibration isolation device for a low-noise screw machine according to claim 1, characterized in that: The upper end of the second liquid oil shell (26) is opened through, the diameter of the second liquid oil shell (26) is the same as the diameter of the first liquid oil shell (21), the bottom end of the second liquid oil shell (26) is fixedly connected to the inner side of the lower part of the sound insulation shell (1), the inner side of the second liquid oil shell (26) and the lower part of the passive component (3) are provided with hydraulic oil, and the interior of the second liquid oil shell (26) is connected to the interior of the first liquid oil shell (21) through a connecting folded pipe (25).

7. The vibration isolation device for a low-noise screw machine according to claim 1, characterized in that: The hollow cylindrical shell (39) is installed on the inner side of the first liquid oil shell (21) and the inner side of the second liquid oil shell (26), the outer side of the hollow airbag (38) is in contact with the inner side of the first liquid oil shell (21), there are two hollow airbags (38), the hollow airbags (38) are fixed on the upper and lower ends of the hollow cylindrical shell (39), the outer side of the hollow airbag (38) at the lower end is in contact with the inner side of the second liquid oil shell (26), the inner side of the hollow cylindrical shell (39) is hollow, the outer side of the sealing ring (36) is in contact with the inner side of the hollow cylindrical shell (39), the inner side of the hollow cylindrical shell (39) is connected with the inner side of the hollow airbag (38) through the inflation port (37), and the inner side of the hollow airbag (38) is hollow.

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