Rotation balance testing device for oil-free vortex vacuum pump

Abstract

The utility model provides a rotation balance testing device for an oil-free scroll vacuum pump, which belongs to the technical field of oil-free scroll vacuum pumps and comprises a testing platform, a vibration sensor and a movable scroll plate are arranged at the upper end of the testing platform, and the movable scroll plate is arranged at the upper end of the testing platform. According to the device, the vibration signals of the movable scroll plate are measured respectively, calculation is carried out in combination with a spectrum analysis method, the unbalance state of the movable scroll plate can be reflected more accurately, the automation degree of the testing process is high, the testing process can be completed without manual intervention, and the testing efficiency is improved. And the device is suitable for dynamic balance testing of dynamic scroll plates of oil-free scroll vacuum pumps of different types and specifications.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil-free scroll vacuum pumps, and in particular relates to a rotation balance testing device for an oil-free scroll vacuum pump. Background Art

[0002] With the continuous development of science and technology, oil-free scroll vacuum pumps are increasingly used in industrial production, scientific research and other fields. Oil-free scroll vacuum pumps are a specially designed vacuum pump whose core feature is that no oil is used as a lubricating or sealing medium during operation. Traditional vacuum pumps, such as oil-sealed rotary vane pumps, rely on oil for lubrication and to help seal, while oil-free scroll pumps achieve oil-free operation through innovative mechanical structures.

[0003] However, during the operation of the oil-free scroll vacuum pump, various factors such as design, manufacturing, and installation may cause the pump to rotate unbalanced, affecting its performance and service life. Therefore, dynamic balancing test of the oil-free scroll vacuum pump rotation system is one of the important tasks in R&D design and mass production. However, the existing test device lacks protection mechanism or device during operation, which will affect the stability and safety during the test. Utility Model Content

[0004] The purpose of the utility model is to provide an oil-free scroll vacuum pump rotation balance test device, aiming to solve the problem that the balance test of the oil-free scroll vacuum pump in the prior art is inconvenient and difficult, and the test device lacks a protective mechanism or device during operation, which will affect the stability and safety during the test.

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

[0006] A rotation balance test device for an oil-free scroll vacuum pump, comprising:

[0007] A test platform, wherein a vibration sensor is disposed at the upper end of the test platform;

[0008] A movable scroll, wherein the movable scroll is arranged at the upper end of the test platform;

[0009] A position sensor, wherein the position sensor is arranged on one side of the orbiting scroll;

[0010] A balance test device, wherein the balance test device is arranged on one side of the test platform and is connected to a vibration sensor and a position sensor through a line;

[0011] A processing unit, wherein the processing unit is disposed at one end of the balance test device, and a controller is disposed at one end of the balance test device;

[0012] A protective shell, the protective shell is fixedly connected to the upper end of the test platform, and the protective shell is rotatably connected to the cover plate through a rotating shaft;

[0013] A connecting groove, the connecting groove is opened at the upper end of the cover plate;

[0014] A plug-in rod, the plug-in rod being fixedly connected to the upper end of the protective shell; and

[0015] Two sets of fixing mechanisms are provided, and both sets of fixing mechanisms are arranged in the plug-in rod.

[0016] As a preferred solution of the utility model, each group of the fixing mechanism consists of a placement slot, a spring and a clamping block, the placement slot is opened at one end of the plug-in rod, the spring is fixedly connected to one side inner wall of the placement slot, and the clamping block is fixedly connected to one end of the spring.

[0017] As a preferred solution of the utility model, a disassembly groove is provided on the upper inner wall of the placement groove, and a disassembly rod is fixedly connected to the upper end of the clamping block.

[0018] As a preferred solution of the utility model, the upper end of the disassembly rod is fixedly connected with a handle, the inner wall of one side of the placement groove is fixedly connected with a telescopic rod, and the spring is sleeved on the circumferential surface of the telescopic rod.

[0019] As a preferred solution of the utility model, a plurality of supporting legs are fixedly connected to the lower end of the test platform, and reinforcing rods are fixedly connected to the adjacent ends of the plurality of supporting legs.

[0020] As a preferred solution of the utility model, a handle is fixedly connected to one end of the cover plate, and an anti-drop sleeve is fixedly connected to the circumferential surface of the handle.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. In this scheme, the device can more accurately reflect the imbalance state of the movable scroll by measuring the vibration signal of the movable scroll respectively and calculating it in combination with the spectrum analysis method. The test process has a high degree of automation and can be completed without human intervention. It is also suitable for dynamic balance tests of movable scrolls of oil-free scroll vacuum pumps of different types and specifications.

[0023] 2. In this solution, by rotating the cover plate to the cover connection at the upper end of the protective shell, it is possible to prevent external devices or debris from entering the movable scroll during detection, resulting in inaccurate detection results, thereby improving the detection stability and safety of the movable scroll. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is the first main stereoscopic view in the utility model;

[0026] Figure 2 It is a side cutaway stereogram in the utility model;

[0027] Figure 3 For the utility model Figure 2 A partial enlarged view of the middle A;

[0028] Figure 4 It is the second main perspective view in the present invention.

[0029] In the figure: 1. test platform; 2. support leg; 3. reinforcement rod; 4. protective shell; 5. cover plate; 6. handle; 7. anti-drop sleeve; 8. plug-in rod; 9. balance test device; 10. controller; 11. processing unit; 12. movable scroll; 13. position sensor; 14. vibration sensor; 15. placement slot; 16. disassembly slot; 17. telescopic rod; 18. spring; 19. clamping block; 20. disassembly rod; 21. handle. DETAILED DESCRIPTION

[0030] 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. Example

[0031] See also Figure 1-4 , the utility model provides the following technical solutions:

[0032] A rotation balance test device for an oil-free scroll vacuum pump, comprising:

[0033] A test platform 1, a vibration sensor 14 is arranged at the upper end of the test platform 1;

[0034] A movable scroll 12, which is arranged at the upper end of the test platform 1;

[0035] A position sensor 13, which is disposed on one side of the orbiting scroll 12;

[0036] A balance test device 9, which is disposed on one side of the test platform 1 and is connected to a vibration sensor 14 and a position sensor 13 through a line;

[0037] A processing unit 11, the processing unit 11 is arranged at one end of the balance test device 9, and a controller 10 is arranged at one end of the balance test device 9;

[0038] A protective shell 4, which is fixedly connected to the upper end of the test platform 1, and the protective shell 4 is rotatably connected to a cover plate 5 via a rotating shaft;

[0039] A connecting groove, which is provided at the upper end of the cover plate 5;

[0040] A plug-in rod 8, the plug-in rod 8 is fixedly connected to the upper end of the protective shell 4; and

[0041] Two sets of fixing mechanisms are both arranged in the plug-in rod 8. Each set of fixing mechanisms is composed of a placement groove 15, a spring 18 and a clamping block 19. The placement groove 15 is opened at one end of the plug-in rod 8, the spring 18 is fixedly connected to one side inner wall of the placement groove 15, and the clamping block 19 is fixedly connected to one end of the spring 18.

[0042] In a specific embodiment of the utility model, a movable scroll 12 to be tested is installed on a test platform 1, and a position sensor 13 and a vibration sensor 14 are respectively arranged in the axial direction and the radial direction. The position sensor 13 and the vibration sensor 14 are respectively connected to a balance test device 9. The test system includes a sensor signal acquisition and processing unit 11 and a controller 10. The sensor signal acquisition and processing unit 11 is used to monitor the rotation speed of the movable scroll 12 in real time, and the controller 10 is used to control the rotation speed and operating state of the movable scroll 12. When the movable scroll 12 is detected, the cover plate 5 is rotated and covered to the upper end of the protective shell 4, and is sleeved to the outer surface of the plug-in rod 8 through the connecting groove, and then the clamping block 19 is pushed out by the spring 18 to prevent the cover plate 5 from detaching from the upper end of the protective shell 4, and to prevent external debris from entering to cause damage to the movable scroll 12, or to cause inaccurate detection results.

[0043] For details, please refer to Figure 2 A disassembly groove 16 is provided on the upper inner wall of the placement groove 15, a disassembly rod 20 is fixedly connected to the upper end of the clamping block 19, a handle 21 is fixedly connected to the upper end of the disassembly rod 20, a telescopic rod 17 is fixedly connected to the inner wall of one side of the placement groove 15, and a spring 18 is sleeved on the circumferential surface of the telescopic rod 17.

[0044] In this embodiment, by pulling the disassembly rod 20, the clamping block 19 can be pulled into the placement groove 15, so as to facilitate reopening the cover plate 5. The telescopic rod 17 can prevent the spring 18 from being damaged due to bending and deformation.

[0045] For details, please refer to Figure 2 The lower end of the test platform 1 is fixedly connected with a plurality of supporting legs 2, the adjacent ends of the plurality of supporting legs 2 are fixedly connected with a reinforcing rod 3, one end of the cover plate 5 is fixedly connected with a handle 6, and the circumferential surface of the handle 6 is fixedly connected with an anti-drop sleeve 7.

[0046] In this embodiment: the test platform 1 and the multiple devices can be supported by the multiple supporting legs 2 and the multiple reinforcing rods 3 , and the cover plate 5 can be conveniently opened by the anti-drop sleeve 7 and the handle 6 .

[0047] The working principle and use process of this utility model:

[0048] The movable scroll 12 to be tested is installed on the test platform 1, and a position sensor 13 and a vibration sensor 14 are respectively arranged in the axial direction and the radial direction. The position sensor 13 and the vibration sensor 14 are respectively connected to the balance test device 9. The test system includes a sensor signal acquisition and processing unit 11 and a controller 10. The sensor signal acquisition and processing unit 11 is used to monitor the rotation speed of the movable scroll 12 in real time, and the controller 10 is used to control the rotation speed and operating status of the movable scroll 12.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An oil-free scroll vacuum pump rotation balance test device, characterized in that: include: A test platform (1), wherein a vibration sensor (14) is arranged at the upper end of the test platform (1); A movable scroll (12), wherein the movable scroll (12) is arranged at the upper end of the test platform (1); A position sensor (13), wherein the position sensor (13) is arranged on one side of the orbiting scroll (12); A balance test device (9), wherein the balance test device (9) is arranged on one side of the test platform (1), and the balance test device (9) is connected to a vibration sensor (14) and a position sensor (13) via a line; A processing unit (11), the processing unit (11) being arranged at one end of the balance test device (9), and a controller (10) being arranged at one end of the balance test device (9); A protective shell (4), the protective shell (4) being fixedly connected to the upper end of the test platform (1), and the protective shell (4) being rotatably connected to a cover plate (5) via a rotating shaft; A connecting groove, the connecting groove being formed at the upper end of the cover plate (5); A plug-in rod (8), the plug-in rod (8) being fixedly connected to the upper end of the protective shell (4); and Two sets of fixing mechanisms, both sets of fixing mechanisms are arranged in the plug-in rod (8).

2. The oil-free scroll vacuum pump rotation balance test device according to claim 1, characterized in that: Each set of the fixing mechanisms is composed of a placement slot (15), a spring (18) and a clamping block (19); the placement slot (15) is opened at one end of the plug-in rod (8); the spring (18) is fixedly connected to an inner wall of one side of the placement slot (15); and the clamping block (19) is fixedly connected to one end of the spring (18).

3. The oil-free scroll vacuum pump rotation balance test device according to claim 2, characterized in that: A disassembly groove (16) is provided on the upper inner wall of the placement groove (15), and a disassembly rod (20) is fixedly connected to the upper end of the clamping block (19).

4. The oil-free scroll vacuum pump rotation balance test device according to claim 3, characterized in that: The upper end of the disassembly rod (20) is fixedly connected to a handle (21), the inner wall of one side of the placement groove (15) is fixedly connected to a telescopic rod (17), and the spring (18) is sleeved on the circumferential surface of the telescopic rod (17).

5. The oil-free scroll vacuum pump rotation balance test device according to claim 4, characterized in that: A plurality of support legs (2) are fixedly connected to the lower end of the test platform (1), and reinforcing rods (3) are fixedly connected to adjacent ends of the plurality of support legs (2).

6. The oil-free scroll vacuum pump rotation balance test device according to claim 5, characterized in that: One end of the cover plate (5) is fixedly connected to a handle (6), and the circumferential surface of the handle (6) is fixedly connected to an anti-drop sleeve (7).

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