CN220101532U

CN220101532U - Vacuum pump

Info

Publication number: CN220101532U
Application number: CN202321603816.4U
Authority: CN
Inventors: 邓善明; 韩春风
Original assignee: Eunow Electronic Technology Co ltd Suzhou
Current assignee: Eunow Electronic Technology Co ltd Suzhou
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-11-28
Anticipated expiration: 2033-06-25

Abstract

The utility model discloses a vacuum pump, comprising: a housing; one side of the shell is connected with a cooling assembly; an eccentric shaft is arranged on the inner side of the shell, a plurality of rotary blades are arranged on the outer side of the eccentric shaft, and the rotary blades are matched with the inner wall of the shell; the outside of eccentric shaft is equipped with drainage structure, drainage structure one side sets up on the eccentric shaft, the opposite side with the spiral vane is connected, right the spiral vane supports, and the device makes fluid cool off through design cooling module, makes inboard fluid temperature reduce, makes fluid carry in horizontal cavity through drainage structure, and drainage structure's terminal surface supports the spiral vane simultaneously, prevents spiral vane overheat deformation.

Description

Vacuum pump

Technical Field

The utility model relates to the technical field of conveying pump bodies, in particular to a vacuum pump.

Background

The rotor eccentrically installed in the rotary vane vacuum pump is tangent to the stator fixing surface, and the rotary vane slides in the rotor groove and contacts with the inner wall of the stator to divide the pump cavity into several variable-volume rotary variable-volume vacuum pumps. Typically, the gap between the vane and the pump chamber is sealed with oil, so vane vacuum pumps are typically oil-sealed mechanical vacuum pumps.

Inside horizontal vane-cell vacuum pump, often through the UNICOM between a plurality of cavitys, reach the inside volumetric effect of compression cavity to carry compressed gas, the inner wall friction with the pump chamber all the time in the vane-cell rotation in-process can produce great heat, and the vane-cell still takes place relative displacement with the eccentric shaft between, and long-time high temperature operation can lead to inside vane-cell softening deformation easily, causes sealed effect impaired.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a vacuum pump.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a vacuum pump, comprising:

a housing;

one side of the shell is connected with a cooling assembly;

an eccentric shaft is arranged on the inner side of the shell, a plurality of rotary blades are arranged on the outer side of the eccentric shaft, and the rotary blades are matched with the inner wall of the shell;

the outside of eccentric shaft is equipped with drainage structure, drainage structure one side sets up on the eccentric shaft, the opposite side with the rotary vane is connected, supports the rotary vane.

As a further description of the above technical solution: one side of the shell is connected with a motor, and the output end of the motor is connected with the eccentric shaft to drive the eccentric shaft to rotate.

As a further description of the above technical solution: the eccentric shaft is provided with a plurality of cavities, and the inner side of each cavity is provided with the rotary vane.

As a further description of the above technical solution: the drainage structure is spiral teeth, and the drainage structure is separated through the cavity.

As a further description of the above technical solution: the inner side end face of the cavity is coplanar with the end face of the drainage structure.

As a further description of the above technical solution: the distance between the end faces of the drainage structure is smaller than the distance between the outer sides of the rotating sheets after the rotating sheets retract into the inner sides of the cavities.

As a further description of the above technical solution: the cooling assembly comprises a water pump, a liquid inlet is formed in the upper portion of one side of the shell, the cooling assembly is connected with the water pump, and a liquid outlet is formed in the bottom of one side, away from the liquid inlet, of the shell.

As a further description of the above technical solution: the liquid outlet is connected with a grid-type condensing pipe through a pipeline, and the other side of the grid-type condensing pipe is connected with the water pump to form a sealed loop.

As a further description of the above technical solution: the grid-type condenser tube is placed in the water tank.

As a further description of the above technical solution: an air inlet hole and an air outlet hole are formed in the upper portion of the shell, and the air inlet hole and the air outlet hole are communicated with the inner side of the shell.

The technical scheme has the following advantages or beneficial effects:

1. make fluid cool off through design cooling module, make inboard fluid temperature reduce, make fluid carry in horizontal cavity through drainage structure, the terminal surface of drainage structure supports the spiral slice simultaneously, prevents to rotate the overheated deformation of slice.

Drawings

Fig. 1 is a perspective view of a vacuum pump according to the present utility model;

FIG. 2 is a side view of a vacuum pump according to the present utility model;

FIG. 3 is a perspective view of the eccentric shaft of the present utility model;

FIG. 4 is a second perspective view of the eccentric shaft of the present utility model;

fig. 5 is a cross-sectional view of the eccentric shaft in the present utility model.

Legend description:

1. a housing; 2. an eccentric shaft; 3. a rotary vane; 4. a motor; 5. a cavity; 6. a drainage structure; 7. a water pump; 8. a grid-type condenser tube; 9. a water tank; 10. an air inlet hole; 11. and an air outlet hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, one embodiment provided by the present utility model is: a vacuum pump, comprising: a housing 1; one side of the shell 1 is connected with a cooling component; an eccentric shaft 2 is arranged at the inner side of the shell 1, a plurality of rotary blades 3 are arranged at the outer side of the eccentric shaft 2, and the rotary blades 3 are matched with the inner wall of the shell 1; the outside of eccentric shaft 2 is equipped with drainage structure 6, and drainage structure 6 one side sets up on eccentric shaft 2, and the opposite side is connected with rotary vane 3, supports rotary vane 3.

In the embodiment, the eccentric shaft 2 is arranged on the inner side of the shell 1, the eccentric shaft 2 is driven to rotate by the motor, a certain gap exists between the drainage structure 6 positioned on the outer side of the eccentric shaft 2 and the inner side of the shell 1, the telescopic rotary vane 3 is arranged on the outer side of the eccentric shaft 2, and in the rotating process of the eccentric shaft 2, the rotary vane 3 moves reciprocally on the inner side of the cavity 5 due to centripetal force, so that one side of the rotary vane 3 is always attached to the inner wall of the shell 1, the inner side of the shell 1 is divided into a plurality of sections, and the sealing performance is ensured; make fluid cool off through design cooling module, make inboard fluid temperature reduce, make fluid carry in horizontal cavity through drainage structure 6, the terminal surface of drainage structure 6 supports rotary vane 3 simultaneously, prevents rotary vane overheat deformation.

One side of the shell 1 is connected with a motor 4, the output end of the motor 4 is connected with the eccentric shaft 2 to drive the eccentric shaft 2 to rotate, the axle center of the eccentric shaft 2 is different from the axle center position of the inner side of the shell 1 in the rotating process of the eccentric shaft 2, the distance between one side of the rotary vane 3 and the inner wall of the shell 1 is continuously changed in the rotating process, and the rotary vane 3 is divided into a plurality of sections to squeeze gas in the sections.

An air inlet hole 10 and an air outlet hole 11 are arranged above the shell 1, the air inlet hole 10 and the air outlet hole 11 are communicated with the inner side of the shell 1, the volume of the inner cavity in the interval is changed through rotation of the rotary vane 3, and the air inlet and exhaust processes are completed through the air inlet hole 10 and the air outlet hole 11.

The eccentric shaft 2 is provided with a plurality of cavities 5, the inner sides of the cavities 5 are provided with rotary blades 3, in the embodiment, the cavities 5 and the rotary blades 3 are limited through a sliding groove sliding block, or springs are arranged on the inner sides of the cavities 5 to support the bottoms of the rotary blades 3, and the sealing performance of the rotary blades 3 and the inner sides of the shells 1 is further improved.

The drainage structure 6 is a spiral tooth, and the drainage structure 6 is separated by the cavity 5; the inner side end face of the cavity 5 is coplanar with the end face of the drainage structure 6, oil liquid on the inner side of the shell 1 is conveyed through the drainage structure 6, when the motor 4 drives the eccentric shaft 2 to rotate, spiral teeth on the outer side of the eccentric shaft 2 can assist in conveying the oil liquid along the spiral direction, so that the oil liquid enters the box body from the water pump 7, and in the process of trampling heat absorption by the rotary plate 3, the oil liquid is conveyed to a liquid outlet of the shell 1 for circulating heat dissipation.

The distance between the end surfaces of the drainage structures 6 is smaller than the distance between the drainage structures 6 and the outer side after the spiral sheet 3 is retracted into the inner side of the cavity 5, in this embodiment, the length of the drainage structures 6 extending in the radial direction is smaller than the length of the drainage structures 6 located outside the cavity 5 after the spiral sheet 3 is retracted into the inner side of the cavity 5, so that the drainage structures 6 are prevented from being in contact with the inner wall of the shell 1.

The cooling component comprises a water pump 7, a liquid inlet is arranged above one side of the shell 1, the cooling component is connected with the water pump 7, and a liquid outlet is arranged at the bottom of one side of the shell 1 away from the liquid inlet; the liquid outlet is connected with a grid-type condensation pipe 8 through a pipeline, the other side of the grid-type condensation pipe 8 is connected with a water pump 7 to form a sealed loop, and the grid-type condensation pipe 8 is arranged in a water tank 9.

In this embodiment, the oil in the casing 1 circulates through the water pump 7, the oil enters the grid-type condenser tube 8 through a pipeline to dissipate heat, the grid-type condenser tube 8 is placed in the water tank 9 to exchange heat, the cooled oil is conveyed into the casing 1 again through the water pump 7, and the oil is conveyed in a moving way inside the casing 1 through the eccentric shaft 2.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. A vacuum pump, comprising:

a housing (1);

one side of the shell (1) is connected with a cooling component;

an eccentric shaft (2) is arranged at the inner side of the shell (1), a plurality of rotary blades (3) are arranged at the outer side of the eccentric shaft (2), and the rotary blades (3) are matched with the inner wall of the shell (1);

the outer side of the eccentric shaft (2) is provided with a drainage structure (6), one side of the drainage structure (6) is arranged on the eccentric shaft (2), and the other side of the drainage structure is connected with the rotary vane (3) to support the rotary vane (3).

2. A vacuum pump according to claim 1, wherein: one side of the shell (1) is connected with a motor (4), and the output end of the motor (4) is connected with the eccentric shaft (2) to drive the eccentric shaft (2) to rotate.

3. A vacuum pump according to claim 1, wherein: the eccentric shaft (2) is provided with a plurality of cavities (5), and the inner sides of the cavities (5) are provided with rotary blades (3).

4. A vacuum pump according to claim 3, wherein: the drainage structure (6) is a spiral tooth, and the drainage structure (6) is separated through the cavity (5).

5. A vacuum pump according to claim 4, wherein: the inner side end surface of the cavity (5) is coplanar with the end surface of the drainage structure (6).

6. A vacuum pump according to claim 4, wherein: the end face distance of the drainage structure (6) is smaller than the distance left outside after the rotary vane (3) is retracted into the inner side of the cavity (5).

7. A vacuum pump according to claim 1, wherein: the cooling assembly comprises a water pump (7), a liquid inlet is formed in the upper portion of one side of the shell (1), the cooling assembly is connected with the water pump (7), and a liquid outlet is formed in the bottom of one side, away from the liquid inlet, of the shell (1).

8. A vacuum pump according to claim 7, wherein: the liquid outlet is connected with a grid-type condensation pipe (8) through a pipeline, and the other side of the grid-type condensation pipe (8) is connected with the water pump (7) to form a sealed loop.

9. A vacuum pump according to claim 8, wherein: the grid-type condensing tube (8) is arranged in the water tank (9).

10. A vacuum pump according to claim 1, wherein: an air inlet hole (10) and an air outlet hole (11) are formed in the upper portion of the shell (1), and the air inlet hole (10) and the air outlet hole (11) are communicated with the inner side of the shell (1).