Vacuum pump with rotating speed adjusting function

Abstract

The utility model relates to the technical field of fluid mechanical equipment, and provides a vacuum pump with rotating speed adjusting.The vacuum pump comprises a mounting seat and a rotating shaft, a notch is formed in the outer surface of the rotating shaft, a plurality of rubber extrusion parts are movably embedded in the inner surface of the notch, telescopic rods are fixedly connected to the outer surfaces of the rubber extrusion parts, and the telescopic rods are fixedly connected with the rotating shaft. The outer surfaces of the multiple telescopic rods are movably sleeved with first springs correspondingly, the outer surfaces of the multiple telescopic rods are fixedly connected with movable plates correspondingly, the outer surfaces of the multiple movable plates are provided with multiple limiting grooves correspondingly, the outer surfaces of the multiple movable plates are fixedly connected with sliding blocks correspondingly, and the outer surface of the mounting base is fixedly connected with two supporting plates. And sliding grooves are formed in the sides, close to the multiple sliding blocks, of the two supporting plates correspondingly, the multiple movable plates are averagely divided into two sets, excessive axial displacement is avoided, stable operation of the rotating shaft is guaranteed, the service life of equipment is prolonged, and the vacuumizing performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid mechanical equipment, in particular to a vacuum pump with speed adjustment. Background Art

[0002] Vacuum pumps with speed adjustment function have shown significant advantages in many industries and applications due to their flexibility, high efficiency and adaptability, and are an important part of the development of modern vacuum technology.

[0003] Although current technology has many advantages, its disadvantage is that when the pump speed is too high, especially when it exceeds the design limit or recommended range, the high-speed rotating parts may generate large centrifugal forces. If these forces exceed the restraining force of the bearings and support structures, axial displacement will result. Axial displacement may cause the rotating parts in the pump to come into contact with the stationary parts, causing wear, shortening the service life of the parts, and increasing the frequency of maintenance. In addition, axial displacement will change the gas flow path and volumetric efficiency inside the pump, reduce the vacuum degree and pumping rate, affect the vacuum performance of the pump, and make it difficult to meet the process requirements. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a vacuum pump with speed adjustment to solve the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a vacuum pump with speed adjustment, comprising: a mounting seat and a rotating shaft, the outer surface of the rotating shaft is provided with a notch, the inner surface of the notch is movably embedded with a plurality of rubber extrusions, the outer surfaces of the plurality of rubber extrusions are fixedly connected with telescopic rods, the outer surfaces of the plurality of telescopic rods are movably sleeved with springs, the outer surfaces of the plurality of telescopic rods are fixedly connected with movable plates, the outer surfaces of the plurality of movable plates are provided with a plurality of limiting grooves, the outer surfaces of the plurality of movable plates are fixedly connected with sliders, the outer surface of the mounting seat is fixedly connected with two support plates, the two support plates are provided with sliding grooves on one side close to the plurality of sliders, the plurality of movable plates are evenly divided into two groups, the outer surfaces of the two groups of movable plates are fixedly connected with handles, and the outer surfaces of the two support plates are provided with limiting mechanisms to avoid excessive axial displacement, ensure the stable operation of the rotating shaft, and extend the service life of the equipment.

[0008] As a preferred embodiment, the limiting mechanism includes two moving rods, the two moving rods are movably embedded in the inner surfaces of the two support plates, the outer surfaces of the two moving rods are movably sleeved with spring 2, the outer surfaces of the two moving rods are fixedly connected with a fixed plate, a limiting plate and handle 2, the two moving rods are fixedly connected with the limiting rod on one side close to the two fixed plates, and handle 2 can provide power for the movement of the moving rods.

[0009] As a preferred embodiment, the rotating shaft is movably embedded in the inner surface of the mounting seat, and the plurality of telescopic rods are movably embedded in the inner surface of the mounting seat, and the telescopic rods can be positioned by spring one.

[0010] As a preferred embodiment, multiple springs are fixedly connected to the inner surface of the mounting seat, multiple springs are fixedly connected to the outer surfaces of multiple rubber extrusions, and springs provide an elastic force to absorb small axial vibrations or displacements.

[0011] As a preferred embodiment, the plurality of sliders are movably embedded in the inner surfaces of the plurality of slide grooves, and the slide grooves can limit the moving trajectory of the sliders to avoid derailment of the sliders.

[0012] As a preferred embodiment, the two springs 2 are fixedly connected to the outer surfaces of the two support plates and the fixed plate, and the springs 2 can provide power for the reverse movement of the fixed plate.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] The utility model can utilize spring 1 to make the rubber extrusion piece stuck in the notch on the rotating shaft. Spring 1 provides an elastic force to absorb tiny axial vibrations or displacements while maintaining a certain preload force, which helps to maintain the stability of the rotating shaft. The rubber extrusion piece is used to adjust the final limit position or provide necessary preload force adjustment. It is also a spacer between spring 1 and the bearing or other components, which helps to protect the surface of the component from damage. When the rotating shaft undergoes axial displacement, the telescopic rod with a self-locking function will also move slightly. The self-locking mechanism only limits the large-scale movement of the telescopic rod, but allows slight movement, avoids excessive axial displacement, ensures the stable operation of the rotating shaft, extends the service life of the equipment, and improves the vacuum performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the main structure of a vacuum pump with speed adjustment provided by the utility model;

[0016] Figure 2 A schematic diagram of a spring position structure of a vacuum pump with speed adjustment provided by the utility model;

[0017] Figure 3 A schematic diagram of the notch position structure of a vacuum pump with speed adjustment provided by the utility model;

[0018] Figure 4 The utility model provides a vacuum pump with speed adjustment Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0019] Legend:

[0020] 1. Mounting seat; 2. Rotating shaft; 3. Notch; 4. Rubber extrusion; 5. Telescopic rod; 6. Moving plate; 7. Sliding block; 8. Support plate; 9. Sliding groove; 10. Handle 1; 11. Moving rod; 12. Spring 2; 13. Fixed plate; 14. Limiting rod; 15. Handle 2; 16. Spring 1; 17. Limiting groove; 18. Limiting plate. 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] See also Figure 1-4 The utility model provides a technical solution: a vacuum pump with speed adjustment, comprising: a mounting seat 1 and a rotating shaft 2, a notch 3 is provided on the outer surface of the rotating shaft 2, a plurality of rubber extrusions 4 are movably embedded on the inner surface of the notch 3, the outer surfaces of the plurality of rubber extrusions 4 are fixedly connected with telescopic rods 5, the outer surfaces of the plurality of telescopic rods 5 are movably sleeved with springs 16, the outer surfaces of the plurality of telescopic rods 5 are fixedly connected with moving plates 6, the outer surfaces of the plurality of moving plates 6 are provided with a plurality of limiting grooves 17, the outer surfaces of the plurality of moving plates 6 are fixedly connected with sliders 7, the outer surface of the mounting seat 1 is fixedly connected with two supporting plates 8, the two supporting plates 8 are provided with sliding grooves 9 on one side close to the plurality of sliders 7, the plurality of moving plates 6 are evenly divided into two groups, the outer surfaces of the two groups of moving plates 6 are fixedly connected with handles 10, and the outer surfaces of the two supporting plates 8 are provided with limiting mechanisms, which avoid excessive axial displacement, ensure the stable operation of the rotating shaft 2, extend the service life of the equipment, and improve the vacuum performance.

[0023] like Figure 1-4As shown, the limiting mechanism includes two moving rods 11, and the two moving rods 11 are movably embedded in the inner surfaces of the two support plates 8. The outer surfaces of the two moving rods 11 are movably sleeved with springs 12. The outer surfaces of the two moving rods 11 are fixedly connected with fixed plates 13, limiting plates 18 and handles 15. The sides of the two moving rods 11 close to the two fixed plates 13 are fixedly connected with limiting rods 14. Handles 15 can provide power for the movement of the moving rods 11 to move the moving rods 11.

[0024] like Figure 1-4 As shown, the rotating shaft 2 is movably embedded in the inner surface of the mounting seat 1, and multiple telescopic rods 5 are movably embedded in the inner surface of the mounting seat 1. The telescopic rods 5 can position the spring 16 and provide a good working environment for the spring 16.

[0025] like Figure 1-4 As shown, multiple springs 16 are fixedly connected to the inner surface of the mounting seat 1, and multiple springs 16 are fixedly connected to the outer surfaces of multiple rubber extrusions 4. The springs 16 provide an elastic force to absorb small axial vibrations or displacements, while maintaining a certain preload force, which helps to maintain the stability of the rotating shaft 2.

[0026] like Figure 1-4 As shown, a plurality of sliders 7 are movably embedded in the inner surfaces of a plurality of slide grooves 9, and the slide grooves 9 can limit the moving tracks of the sliders 7, thereby preventing the sliders 7 from derailing and affecting the use of the equipment.

[0027] like Figure 1-4 As shown, two springs 12 are fixedly connected to the outer surfaces of the two support plates 8 and the fixing plate 13. The springs 12 can provide power for the reverse movement of the fixing plate 13, so that the fixing plate 13 moves in the reverse direction.

[0028] Working principle: This device is a vacuum pump with speed adjustment. When multiple people cooperate to install it, pull the handle 2 15 to make the handle 2 15 drive the moving rod 11 to move, and the moving rod 11 drives the fixed plate 13 and the limit rod 14 to move. The fixed plate 13 will stretch the spring 2 12, so that the spring 2 12 obtains elastic potential energy, and the limit rod 14 leaves the limit groove 17 on the moving plate 6. At this time, the limit rod 14 no longer limits the moving plate 6, and then pull the handle 10 to make the handle 10 drive the telescopic rod 5 to move through the moving plate 6. The slide groove 9 on the support plate 8 cooperates with the slider 7 to limit the moving trajectory of the moving plate 6. When the telescopic rod 5 moves, it will drive the rubber extruder 17 to move. The pressing piece 4 moves and squeezes the spring 16, so that the spring 16 obtains elastic potential energy, and then the rotating shaft 2 is inserted into the interior of the mounting seat 1 and is concentric with the mounting seat 1, and the notch 3 on the rotating shaft 2 is aligned with the multiple rubber extrusion pieces 4, and the handle 10 is released. At this time, the spring 16 releases the elastic potential energy, so that the rubber extrusion piece 4 is inserted into the notch 3, and then the handle 10 is released, and the spring 2 12 releases the elastic potential energy, so that the fixed plate 13 pulls the moving rod 11 to move, and the moving rod 11 drives the limiting rod 14 back to the limiting groove 17 on the moving plate 6 to form a self-locking, and the limiting plate 18 can prevent the moving rod 11 from derailing with the support plate 8, affecting the use of the equipment.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A vacuum pump with speed adjustment, comprising: The mounting seat (1) and the rotating shaft (2) are characterized in that: a notch (3) is provided on the outer surface of the rotating shaft (2); a plurality of rubber extrusion members (4) are movably embedded in the inner surface of the notch (3); the outer surfaces of the plurality of rubber extrusion members (4) are fixedly connected with telescopic rods (5); the outer surfaces of the plurality of telescopic rods (5) are movably sleeved with springs (16); the outer surfaces of the plurality of telescopic rods (5) are fixedly connected with moving plates (6); the outer surfaces of the plurality of moving plates (6) are provided with a plurality of limiting grooves (17); the outer surfaces of the plurality of moving plates (6) are fixedly connected with sliders (7); the outer surface of the mounting seat (1) is fixedly connected with two supporting plates (8); the two supporting plates (8) are provided with sliding grooves (9) on one side close to the plurality of sliders (7); the plurality of moving plates (6) are evenly divided into two groups; the outer surfaces of the two groups of moving plates (6) are fixedly connected with handles (10); and the outer surfaces of the two supporting plates (8) are provided with limiting mechanisms.

2. A vacuum pump with speed adjustment according to claim 1, characterized in that: The limiting mechanism comprises two moving rods (11), the two moving rods (11) are movably embedded in the inner surfaces of the two supporting plates (8), the outer surfaces of the two moving rods (11) are movably sleeved with springs (12), the outer surfaces of the two moving rods (11) are fixedly connected with a fixing plate (13), a limiting plate (18) and a handle (15), and the two moving rods (11) are fixedly connected with a limiting rod (14) on one side close to the two fixing plates (13).

3. A vacuum pump with speed adjustment according to claim 1, characterized in that: The rotating shaft (2) is movably embedded in the inner surface of the mounting seat (1), and the plurality of telescopic rods (5) are movably embedded in the inner surface of the mounting seat (1).

4. A vacuum pump with speed adjustment according to claim 1, characterized in that: A plurality of springs (16) are fixedly connected to the inner surface of the mounting seat (1), and a plurality of springs (16) are fixedly connected to the outer surfaces of a plurality of rubber extrusion members (4).

5. A vacuum pump with speed adjustment according to claim 1, characterized in that: The plurality of sliding blocks (7) are movably embedded in the inner surfaces of the plurality of sliding grooves (9).

6. A vacuum pump with speed adjustment according to claim 2, characterized in that: The two springs (12) are fixedly connected to the outer surfaces of the two support plates (8) and the fixing plate (13).

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