Noise reduction structure of vacuum pump

Abstract

The utility model relates to the technical field of noise reduction of vacuum pumps, and discloses a noise reduction structure of a vacuum pump, which comprises a shell, a mounting plate is movably sleeved at the bottom of the interior of the shell, and a vacuum pump is fixedly mounted at the top end of the mounting plate; the vibration reduction mechanism is arranged at the bottom end of the mounting plate; and the sound insulation mechanism is arranged at the top end of the shell. Through the arrangement of the rectangular blocks, the springs, the connecting plate, the first vacuum cavity and the second vacuum cavity, when the vacuum pump vibrates, the mounting plate is driven to vibrate along with the vacuum pump, so that the connecting plate generates thrust on the rectangular blocks to push the two rectangular blocks to move back to back and stretch the springs, and under the recovery action of the springs, the vacuum pump is driven to move back to back. And meanwhile, the first vacuum cavity, the sealing gasket and the second vacuum cavity are matched with one another, so that the whole vacuum pump can be sealed and isolated, and noise reduction treatment of the vacuum pump can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pump noise reduction, and more specifically, to a vacuum pump noise reduction structure. Background Art

[0002] A vacuum pump refers to a device or equipment that uses mechanical, physical, chemical or physicochemical methods to evacuate the container to obtain a vacuum. According to the working principle of the vacuum pump, it can be divided into two types: gas capture pump and gas transmission pump. It is widely used in metallurgy, chemical industry, food, electronic coating and other industries.

[0003] With the development of vacuum applications, the types and functions of vacuum pumps have become more and more perfect. However, there are still some shortcomings in the actual use of vacuum pumps. Since vacuum pumps require electric motors when in use, vacuum pumps are prone to vibration during operation. Due to the lack of corresponding vibration reduction measures, mechanical noise will be generated along with the operation of the vacuum pump body. When operators are in a noisy environment for a long time, it will cause harm to the body, so improvements are needed. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a noise reduction structure of a vacuum pump, which has the advantage of reducing noise.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a noise reduction structure of a vacuum pump, comprising:

[0006] A housing, wherein a mounting plate is movably sleeved at the bottom of the housing, and a vacuum pump is fixedly mounted on the top of the mounting plate;

[0007] A vibration reduction mechanism, wherein the vibration reduction mechanism is arranged at the bottom end of the mounting plate;

[0008] A sound insulation mechanism, wherein the sound insulation mechanism is arranged at the top of the housing;

[0009] Among them, the vibration reduction mechanism includes a limiting groove, which is opened at the bottom end of the shell, and the left and right sides of the limiting groove are respectively movably sleeved with limiting blocks, and a rectangular block is fixedly installed on the top of the limiting block. There are two rectangular blocks, and a spring is fixedly connected between the two rectangular blocks. The tops of the two rectangular blocks are respectively hinged with connecting plates, and the other end of the connecting plate is hinged to the bottom end of the mounting plate. Dampers are respectively fixedly installed on the opposite back sides of the two rectangular blocks. There are two dampers, which are respectively fixedly installed on the bottom of the inner walls on the left and right sides of the shell, and the connecting plate will cause the rectangular block to move.

[0010] As a preferred technical solution of the utility model, the sound insulation mechanism includes:

[0011] a first vacuum chamber, wherein the first vacuum chamber is opened inside the housing;

[0012] A sealing gasket, the sealing gasket is fixedly mounted on the top of the housing, a cover plate is fixedly mounted on the top of the sealing gasket, and a second vacuum chamber is opened inside the cover plate;

[0013] The sound-absorbing sponge is fixedly sleeved on the right side of the top end of the vacuum pump.

[0014] As a preferred technical solution of the utility model, a fixing rod is fixedly installed on the front right side of the top of the shell, a first rotating rod is movably sleeved on the top of the outer surface of the fixing rod, a driven gear is fixedly installed on the rear end of the first rotating rod, and the inner surface of the driven gear is movably sleeved on the outer surface of the fixing rod.

[0015] As a preferred technical solution of the utility model, a driving motor is fixedly installed on the front part of the left side of the top of the shell, the other end of the output shaft of the driving motor is fixedly sleeved with a driving shaft, the bottom end of the driving shaft is movably connected to the top of the shell, a second rotating rod is fixedly sleeved on the top of the outer surface of the driving shaft, a driving wheel is fixedly installed on the bottom end of the second rotating rod, the inner surface of the driving wheel is movably sleeved with the outer surface of the driving shaft, the outer surface of the driving wheel is meshingly connected with the outer surface of the driven gear, and the second rotating rod will drive the driving wheel to rotate.

[0016] As a preferred technical solution of the utility model, fixed blocks are fixedly installed at the bottom of the left and right ends of the shell, and vertical plates are movably sleeved on the top of the fixed blocks. The number of the fixed blocks and the vertical plates are both two and they are symmetrical with respect to the center of the shell.

[0017] As a preferred technical solution of the utility model, the top ends of the two vertical plates are respectively fixedly installed with horizontal plates, the number of the horizontal plates is two, and the opposite surfaces of the two horizontal plates are respectively movably connected to the left and right ends of the outer shell, and the bottom ends of the two vertical plates are respectively fixedly installed with long rods, the number of the long rods is two, the two long rods are respectively movably connected to the inner surfaces of the two fixed blocks, and the outer surfaces of the two long rods are respectively movably connected to the inner surfaces of the first rotating rod and the second rotating rod.

[0018] As a preferred technical solution of the utility model, rollers are movably sleeved on the upper and lower ends of the outer surfaces of the two long rods, and the number of the rollers is four, and the shapes and sizes of the four rollers are the same.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] 1. The utility model arranges a rectangular block, a spring, a connecting plate, a first vacuum chamber and a second vacuum chamber. When the vacuum pump vibrates, the mounting plate will be driven to vibrate together, so that the connecting plate generates a thrust on the rectangular block, pushing the two rectangular blocks to move in opposite directions and stretching the spring. Under the restoring action of the spring, it will be forced to reset. At the same time, the first vacuum chamber, the sealing pad and the second vacuum chamber cooperate with each other, so that the vacuum pump can be sealed and isolated as a whole, thereby achieving noise reduction of the vacuum pump.

[0021] 2. The utility model is provided with a first rotating rod, a driven gear, a driving motor, a second rotating rod and a driving wheel. When the driving motor is started, the driving shaft will drive the second rotating rod and the driving wheel to rotate. Since the outer surface of the driving wheel is meshed with the outer surface of the driven gear, under the action of the driving wheel, the driven gear will drive the first rotating rod to rotate in the opposite direction, so that the second rotating rod and the first rotating rod respectively generate a thrust on the two long rods, pushing the long rods to move with the roller, thereby facilitating the movement of the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the front side of the utility model;

[0024] Figure 3 It is a cross-sectional structural schematic diagram of the side of the utility model;

[0025] Figure 4 This is a cross-sectional structural diagram of the bottom of the utility model

[0026] Figure 5 for Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0027] In the figure: 1. shell; 2. mounting plate; 3. vacuum pump; 4. vibration reduction mechanism; 401. limit groove; 402. limit block; 403. rectangular block; 404. spring; 405. connecting plate; 406. damper; 5. sound insulation mechanism; 501. first vacuum chamber; 502. sealing gasket; 503. cover plate; 504. second vacuum chamber; 505. sound absorbing sponge; 6. fixing rod; 7. first rotating rod; 8. driven gear; 9. driving motor; 10. driving shaft; 11. second rotating rod; 12. driving wheel; 13. fixing block; 14. vertical plate; 15. horizontal plate; 16. long rod; 17. roller. DETAILED DESCRIPTION

[0028] 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.

[0029] like Figures 1 to 5 As shown, the utility model provides a noise reduction structure of a vacuum pump, comprising:

[0030] A housing 1, a mounting plate 2 is movably sleeved at the bottom of the housing 1, and a vacuum pump 3 is fixedly mounted on the top of the mounting plate 2;

[0031] A vibration reduction mechanism 4, which is arranged at the bottom end of the mounting plate 2;

[0032] A sound insulation mechanism 5, which is arranged at the top of the housing 1;

[0033] Among them, the vibration reduction mechanism 4 includes a limiting groove 401, which is opened at the bottom end of the shell 1, and the left and right sides of the limiting groove 401 are movably connected to the limiting block 402 respectively. A rectangular block 403 is fixedly installed on the top of the limiting block 402. There are two rectangular blocks 403. A spring 404 is fixedly connected between the two rectangular blocks 403. The tops of the two rectangular blocks 403 are respectively hinged with connecting plates 405, and the other end of the connecting plate 405 is hinged to the bottom end of the mounting plate 2. Dampers 406 are fixedly installed on the opposite backs of the two rectangular blocks 403. There are two dampers 406, which are respectively fixedly installed on the bottom of the inner walls on the left and right sides of the shell 1. The connecting plate 405 will cause the rectangular block 403 to move.

[0034] When the vacuum pump 3 vibrates, the mounting plate 2 will move along the inner surface of the shell 1. Since the connecting plate 405 and the mounting plate 2 are hinged, as the mounting plate 2 moves, the connecting plate 405 will generate a thrust on the rectangular block 403, pushing the two rectangular blocks 403 to move in opposite directions and stretching the spring 404. Under the joint action of the spring 404 and the damper 406, the mounting plate 2 will return to its original position, thereby achieving the purpose of slowing down the vibration of the vacuum pump 3, thereby reducing the noise generated by the mechanical vibration of the vacuum pump 3 during operation.

[0035] Wherein, the sound insulation mechanism 5 includes:

[0036] A first vacuum chamber 501, which is opened inside the housing 1;

[0037] A sealing gasket 502, which is fixedly mounted on the top of the housing 1, and a cover plate 503 is fixedly mounted on the top of the sealing gasket 502, and a second vacuum chamber 504 is opened inside the cover plate 503;

[0038] The sound-absorbing sponge 505 is fixedly sleeved on the right side of the top of the vacuum pump 3 .

[0039] Due to the existence of the first vacuum chamber 501 and the second vacuum chamber 504, the noise generated during the operation of the vacuum pump 3 will be reduced, the sealing gasket 502 can seal between the housing 1 and the vacuum pump 3, and the sound-absorbing sponge 505 can absorb the noise at the vent.

[0040] Among them, a fixing rod 6 is fixedly installed at the front right side of the top of the shell 1, and a first rotating rod 7 is movably sleeved on the top of the outer surface of the fixing rod 6. A driven gear 8 is fixedly installed at the rear end of the first rotating rod 7, and the inner surface of the driven gear 8 is movably sleeved on the outer surface of the fixing rod 6.

[0041] When the driven gear 8 rotates, the first rotating rod 7 will be driven to rotate together.

[0042] Among them, a driving motor 9 is fixedly installed on the front part of the left side of the top of the shell 1, and a driving shaft 10 is fixedly sleeved on the other end of the output shaft of the driving motor 9. The bottom end of the driving shaft 10 is movably connected to the top of the shell 1, and a second rotating rod 11 is fixedly sleeved on the top of the outer surface of the driving shaft 10. A driving wheel 12 is fixedly installed on the bottom end of the second rotating rod 11. The inner surface of the driving wheel 12 is movably sleeved on the outer surface of the driving shaft 10, and the outer surface of the driving wheel 12 is meshedly connected with the outer surface of the driven gear 8. The second rotating rod 11 will drive the driving wheel 12 to rotate.

[0043] When the driving motor 9 is started, the driving shaft 10 will drive the second rotating rod 11 to rotate. At this time, the driving wheel 12 fixedly connected to the second rotating rod 11 will rotate together, and the driving wheel 12 is meshed with the driven gear 8. Therefore, under the action of the driving wheel 12, the driven gear 8 will drive the first rotating rod 7 to rotate in the opposite direction.

[0044] Among them, fixed blocks 13 are fixedly installed at the bottom of the left and right ends of the shell 1, and the top of the fixed block 13 is movably sleeved with a vertical plate 14. The number of the fixed block 13 and the vertical plate 14 are both two and they are symmetrical with each other about the center of the shell 1.

[0045] The fixing block 13 and the vertical plate 14 provide support and fixation.

[0046] Among them, the top ends of the two vertical plates 14 are respectively fixedly installed with horizontal plates 15, the number of which is two, and the opposite surfaces of the two horizontal plates 15 are respectively movably connected to the left and right ends of the shell 1, and the bottom ends of the two vertical plates 14 are respectively fixedly installed with long rods 16, the number of which is two, and the two long rods 16 are respectively movably sleeved on the inner surfaces of the two fixed blocks 13, and the outer surfaces of the two long rods 16 are respectively movably sleeved on the inner surfaces of the first rotating rod 7 and the second rotating rod 11.

[0047] When the first rotating rod 7 and the second rotating rod 11 rotate in opposite directions, a thrust will be generated on the two long rods 16 respectively, pushing the long rods 16 to move with the vertical plate 14 and the horizontal plate 15.

[0048] The upper and lower ends of the outer surfaces of the two long rods 16 are movably sleeved with rollers 17 , and there are four rollers 17 . The four rollers 17 have the same shape and size.

[0049] The existence of the roller 17 makes it easier to move the vacuum pump.

[0050] The working principle and use process of this utility model:

[0051] First, the operator starts the driving motor 9, so that the driving shaft 10 drives the second rotating rod 11 and the driving wheel 12 to rotate. Since the driving wheel 12 and the driven gear 8 are meshed with each other, as the driving wheel 12 rotates, the driven gear 8 will drive the first rotating rod 7 to rotate in the opposite direction. Since the inner surfaces of the first rotating rod 7 and the second rotating rod 11 are movably connected to the outer surfaces of the two long rods 16 respectively, under the action of the first rotating rod 7 and the second rotating rod 11, the two long rods 16 will drive the roller 17, the vertical plate 14 and the horizontal plate 15 to move along the inner surface of the fixed block 13 until the roller 17 contacts the ground. Then the operator can push the shell 1 to move the vacuum pump 3 to the specified position. The mutual cooperation of various mechanisms realizes the adjustment of the position of the vacuum pump 3, thereby making the movement of the vacuum pump 3 more convenient.

[0052] Then the operator starts the drive motor 9 again to lift the roller 17, and then the connection work of the vacuum pump 3 can be carried out. When the vacuum pump 3 vibrates during operation, the mounting plate 2 fixedly connected to the vacuum pump 3 will vibrate together, so that the connecting plate 405 hinged to the mounting plate 2 generates a thrust on the rectangular block 403, pushing the two rectangular blocks 403 with the limit block 402 to move in opposite directions along the inner surface of the limit groove 401 and stretch the spring 404. Under the recovery action of the spring 404, the spring 404 will cooperate with the damper 406 to force the rectangular block 403 to reset. Such repeated cycles can achieve the purpose of slowing down the vibration of the vacuum pump 3. At the same time, the mutual cooperation of the first vacuum chamber 501, the sealing pad 502 and the second vacuum chamber 504 realizes the sealing and isolation of the vacuum pump 3 as a whole. The sound-absorbing sponge 505 can absorb noise without hindering the ventilation and heat dissipation of the vacuum pump 3. The mutual cooperation of various mechanisms realizes the noise reduction of the vacuum pump 3.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] 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 noise reduction structure for a vacuum pump, characterized in that: Included are: A housing (1), wherein a mounting plate (2) is movably sleeved at the bottom of the housing (1), and a vacuum pump (3) is fixedly mounted at the top of the mounting plate (2); A vibration reduction mechanism (4), wherein the vibration reduction mechanism (4) is arranged at the bottom end of the mounting plate (2); A sound insulation mechanism (5), wherein the sound insulation mechanism (5) is arranged at the top end of the housing (1); The vibration reduction mechanism (4) comprises a limiting groove (401), wherein the limiting groove (401) is provided at the bottom end of the housing (1), and the limiting blocks (402) are movably sleeved on the left and right sides of the limiting groove (401), and a rectangular block (403) is fixedly installed on the top of the limiting block (402). There are two rectangular blocks (403), and a spring (404) is fixedly connected between the two rectangular blocks (403). The top of the block (403) is hinged with a connecting plate (405), and the other end of the connecting plate (405) is hinged with the bottom end of the mounting plate (2). Dampers (406) are fixedly installed on the opposite back surfaces of the two rectangular blocks (403). The number of the dampers (406) is two, and the two dampers (406) are fixedly installed on the bottom of the inner walls on the left and right sides of the shell (1), respectively. The connecting plate (405) will cause the rectangular block (403) to move.

2. A noise reduction structure for a vacuum pump according to claim 1, characterized in that: The sound insulation mechanism (5) comprises: A first vacuum chamber (501), wherein the first vacuum chamber (501) is opened inside the housing (1); A sealing gasket (502), the sealing gasket (502) being fixedly mounted on the top of the housing (1), a cover plate (503) being fixedly mounted on the top of the sealing gasket (502), and a second vacuum chamber (504) being provided inside the cover plate (503); A sound-absorbing sponge (505) is fixedly sleeved on the right side of the top end of the vacuum pump (3).

3. A noise reduction structure for a vacuum pump according to claim 1, characterized in that: A fixing rod (6) is fixedly mounted on the front right side of the top end of the housing (1); a first rotating rod (7) is movably sleeved on the top of the outer surface of the fixing rod (6); a driven gear (8) is fixedly mounted on the rear end of the first rotating rod (7); and the inner surface of the driven gear (8) is movably sleeved on the outer surface of the fixing rod (6).

4. The noise reduction structure of a vacuum pump according to claim 1, characterized in that: A driving motor (9) is fixedly mounted on the front portion of the left top of the housing (1); a driving shaft (10) is fixedly sleeved on the other end of the output shaft of the driving motor (9); the bottom end of the driving shaft (10) is movably connected to the top of the housing (1); a second rotating rod (11) is fixedly sleeved on the top of the outer surface of the driving shaft (10); a driving wheel (12) is fixedly mounted on the bottom end of the second rotating rod (11); the inner surface of the driving wheel (12) is movably sleeved on the outer surface of the driving shaft (10); the outer surface of the driving wheel (12) is meshingly connected to the outer surface of the driven gear (8); and the second rotating rod (11) drives the driving wheel (12) to rotate.

5. The noise reduction structure of a vacuum pump according to claim 1, characterized in that: A fixing block (13) is fixedly mounted at the bottom of the left and right ends of the shell (1), and a vertical plate (14) is movably sleeved on the top of the fixing block (13). The number of the fixing block (13) and the vertical plate (14) are both two and they are symmetrical with respect to the center of the shell (1).

6. A noise reduction structure for a vacuum pump according to claim 5, characterized in that: A transverse plate (15) is fixedly mounted on the top ends of the two vertical plates (14), the number of the transverse plates (15) is two, and the opposite surfaces of the two transverse plates (15) are movably connected to the left and right ends of the outer shell (1). A long rod (16) is fixedly mounted on the bottom ends of the two vertical plates (14), the number of the long rod (16) is two, the two long rods (16) are movably sleeved on the inner surfaces of the two fixed blocks (13), and the outer surfaces of the two long rods (16) are movably sleeved on the inner surfaces of the first rotating rod (7) and the second rotating rod (11), respectively.

7. A noise reduction structure for a vacuum pump according to claim 6, characterized in that: Rollers (17) are movably sleeved at the upper and lower ends of the outer surfaces of the two long rods (16), and there are four rollers (17). The four rollers (17) are of the same shape and size.

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