A heat dissipation structure for a screw vacuum pump

Abstract

This utility model relates to the field of screw vacuum pump technology and discloses a heat dissipation structure for a screw vacuum pump. The structure includes a pump housing, a motor fixedly connected to the outer wall of the pump housing, and a heat dissipation mechanism on the outer wall of the pump housing. The heat dissipation mechanism includes a hollow ring fixedly connected to the outer wall of the pump housing, an annular groove on the inner wall of the hollow ring, and a flow equalization mechanism on the inner wall of the hollow ring; a rotating ring with a fan fixedly connected to its left side, and ball bearings rollingly connected to its inner wall; and a mounting frame fixedly connected to the outer wall of the hollow ring, with a fan fixedly connected to its inner wall. In this utility model, the design of the heat dissipation mechanism accelerates the airflow around the motor, allowing the heat generated during operation to be carried away by the flowing air, thereby dissipating heat from the motor, preventing overheating, ensuring stable operation of the motor, and extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of screw vacuum pump technology, and in particular to a heat dissipation structure for a screw vacuum pump. Background Technology

[0002] A screw vacuum pump is a vacuum device that pumps air based on the screw rotor meshing principle. It features stable pumping speed, high ultimate vacuum, low operating noise, and convenient maintenance. It is widely used in many fields such as chemical, pharmaceutical, electronics, and food industries, and can meet the vacuum requirements of different processes.

[0003] During operation, screw vacuum pumps generate heat not only internally, but the motor also gradually heats up under prolonged high-load operation. Currently, most screw vacuum pumps on the market only design heat dissipation structures for the internal rotor, neglecting the heat generated by the motor itself. Especially in environments with high ambient temperatures, the motor's heating rate will increase significantly. Prolonged high-temperature operation will severely reduce the motor's lifespan, thereby affecting the normal operation of the vacuum pump.

[0004] To address this issue, a heat dissipation structure for a screw vacuum pump is proposed. Utility Model Content

[0005] This invention provides a heat dissipation structure for a screw vacuum pump, which aims to improve the problem mentioned in the prior art that "screw vacuum pumps lack a structure for cooling the motor, which easily leads to the motor running at high temperatures for a long time".

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a heat dissipation structure for a screw vacuum pump, comprising a pump housing, a motor fixedly connected to the outer wall of the pump housing, and a heat dissipation mechanism provided on the outer wall of the pump housing, the heat dissipation mechanism comprising: A hollow ring is fixedly connected to the outer wall of the pump casing. An annular groove is formed on the inner wall of the hollow ring, and a flow equalization mechanism is provided on the inner wall of the hollow ring. A rotating ring, wherein a wind duct is fixedly connected to the left side of the rotating ring, and ball bearings are rotatably connected to the inner wall of the rotating ring; The mounting frame is fixedly connected to the outer wall of the hollow ring, and a fan is fixedly connected to the inner wall of the mounting frame.

[0007] As a further description of the above technical solution: The flow equalization mechanism includes a support base, which is fixedly connected to the inner wall of the hollow ring, and a rotating shaft is rotatably connected to the inner wall of the support base.

[0008] As a further description of the above technical solution: A connecting rod is fixedly connected to the outer wall of the rotating shaft, and a wind cup is fixedly connected to the end of the connecting rod away from the rotating shaft.

[0009] As a further description of the above technical solution: A groove is provided on the side of the rotating ring away from the air duct.

[0010] As a further description of the above technical solution: An L-shaped rod is fixedly connected to the outer wall of the rotating shaft. The L-shaped rod has an "L"-shaped structure, with the end of the L-shaped rod away from the rotating shaft attached to the inner wall of the sliding groove.

[0011] As a further description of the above technical solution: The outer wall of the ball is attached to the inner wall of the annular groove, and the rotating ring is rotatably connected to the inner wall of the annular groove through the ball.

[0012] As a further description of the above technical solution: The wind cup is a hollow hemispherical structure. There are three sets of connecting rods. The three sets of connecting rods are arranged in a circular array on the outer wall of the rotating shaft with the central axis of the rotating shaft as the origin. Each of the three sets of connecting rods has a wind cup at its end.

[0013] As a further description of the above technical solution: The rotating shaft is located directly below the fan.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the design of the heat dissipation mechanism can accelerate the air circulation speed around the motor, so that the heat generated during its operation can be carried away by the circulating air, thereby dissipating heat from the motor, preventing it from overheating, ensuring stable operation of the motor and extending its service life.

[0015] 2. In this utility model, the design of the flow equalization mechanism allows cold air to be evenly covered on the outer surface of the motor, thereby enabling the motor to dissipate heat evenly, effectively avoiding heat dissipation dead zones, and further improving the heat dissipation effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the hollow ring of this utility model; Figure 3 This is a schematic diagram of the exploded structure of the hollow ring of this utility model; Figure 4 This is a partial cross-sectional structural diagram of the hollow ring of this utility model.

[0017] Legend: 1. Pump casing; 2. Motor; 3. Heat dissipation mechanism; 31. Hollow ring; 32. Rotating ring; 33. Mounting frame; 34. Annular groove; 35. Air duct; 36. Ball bearing; 37. Fan; 4. Flow equalization mechanism; 41. Support base; 42. Rotating shaft; 43. Connecting rod; 44. Air cup; 45. L-rod; 46. Slide groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figure 1 - Figure 3 One embodiment of this utility model is a heat dissipation structure for a screw vacuum pump, including a pump housing 1, a motor 2 fixedly connected to the outer wall of the pump housing 1, and a heat dissipation mechanism 3 provided on the outer wall of the pump housing 1.

[0020] Reference Figure 2 - Figure 4 The heat dissipation mechanism 3 includes a hollow ring 31, which is fixedly connected to the outer wall of the pump housing 1. An annular groove 34 is provided on the inner wall of the hollow ring 31. The annular groove 34 can provide guidance for the rotating ring 32 to make it rotate stably. A flow equalization mechanism 4 is provided on the inner wall of the hollow ring 31. The rotating ring 32 has a fan duct 35 fixedly connected to its left side. The angle between the central axis of the fan duct 35 and the central axis of the rotating ring 32 is 15° to 25°. The fan duct 35 guides the cold air to the motor 2, thereby cooling the motor 2. The inner wall of the rotating ring 32 is connected to a ball bearing 36. The outer wall of the ball bearing 36 is attached to the inner wall of the annular groove 34. The rotating ring 32 is rotatably connected to the inner wall of the annular groove 34 through the ball bearing 36. The contact between the ball bearing 36 and the annular groove 34 can greatly reduce the resistance between the rotating ring 32 and the annular groove 34. Mounting frame 33 is fixedly connected to the outer wall of hollow ring 31. Fan 37 is fixedly connected to the inner wall of mounting frame 33. Mounting frame 33 is used for support and fixation of fan 37. When fan 37 is running, it blows cold air from outside into the interior of hollow ring 31.

[0021] Reference Figure 4The flow equalization mechanism 4 includes a support base 41, which is fixedly connected to the inner wall of the hollow ring 31. A rotating shaft 42 is rotatably connected to the inner wall of the support base 41. The support base 41 can provide stable and effective support for the rotating shaft 42. The rotating shaft 42 is located directly below the fan 37. A connecting rod 43 is fixedly connected to the outer wall of the rotating shaft 42. A wind cup 44 is fixedly connected to the end of the connecting rod 43 away from the rotating shaft 42. When the fan 37 blows air into the hollow ring 31, the airflow will impact the wind cup 44. The wind cup 44 is a hollow hemispherical structure. Because the wind cup 44 is a hollow hemispherical structure, the thrust caused by the airflow blowing into the wind cup 44 is much greater than the thrust caused by the airflow blowing into its hemispherical surface. This means that as long as the airflow blows into the wind cup 44, the wind cup 44 will push the connecting rod 43.

[0022] Reference Figure 4 There are three sets of connecting rods 43. The three sets of connecting rods 43 are arranged in a circular array on the outer wall of the rotating shaft 42 with the central axis of the rotating shaft 42 as the origin. Each of the three sets of connecting rods 43 is equipped with a wind cup 44. When the airflow of the fan 37 impacts the wind cup 44, the wind cup 44 will push the connecting rod 43, which in turn will push the rotating shaft 42. At this time, the rotating shaft 42 will rotate on the inner wall of the support base 41.

[0023] Reference Figure 4 A groove 46 is provided on the side of the rotating ring 32 away from the air duct 35. An L-rod 45 is fixedly connected to the outer wall of the rotating shaft 42. The L-rod 45 is an "L"-shaped rod structure. The end of the L-rod 45 away from the rotating shaft 42 is attached to the inner wall of the groove 46. When the rotating shaft 42 rotates, it will drive the L-rod 45 to move back and forth against the inner wall of the groove 46. At the same time, under the radial limiting action of the groove 46, the L-rod 45 will push and pull the rotating ring 32 back and forth, so that the rotating ring 32 will rotate back and forth on the inner wall of the annular groove 34.

[0024] Working principle: When the motor 2 is running, the fan 37 is started to blow cold air from the outside into the hollow ring 31. At this time, the cold air inside the hollow ring 31 will pass through the fan duct 35 and be blown towards the motor 2 under the guidance of the fan duct 35. This can accelerate the air circulation speed around the motor 2, so that the heat generated during its operation can be carried away by the circulating air, thereby dissipating heat from the motor 2.

[0025] The air ducts 35 on the side wall of the rotating ring 32 are distributed in a circumferential array at equal intervals, which allows the cold air ejected from the air ducts 35 to cover the entire perimeter of the motor 2, so that the outer surface of the motor 2 can be effectively cooled, thereby improving the heat dissipation efficiency of the motor 2.

[0026] While the blower 37 blows air into the hollow ring 31, the airflow impacts the wind cup 44, causing the wind cup 44 to push the connecting rod 43. This, in turn, causes the connecting rod 43 to push the rotating shaft 42. At this time, the rotating shaft 42 rotates on the inner wall of the support base 41. Simultaneously, the rotating shaft 42 drives the L-rod 45 to rotate around its central axis. At the same time, the L-rod 45 reciprocates against the inner wall of the slide groove 46. Under the radial limiting action of the slide groove 46, the L-rod 45 reciprocates by pushing and pulling. The rotating ring 32 reciprocates within the inner wall of the annular groove 34, while simultaneously causing the ball bearings 36 to roll back and forth within the annular groove 34. This reciprocating rotation of the ring 32 also causes the fan duct 35 on its side wall to move back and forth. This movement of the fan duct 35 ensures that the emitted cold air is evenly distributed across the outer wall of the motor 2, effectively preventing heat dissipation dead zones and further improving heat dissipation.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat dissipation structure for a screw vacuum pump, comprising a pump housing (1), wherein a motor (2) is fixedly connected to the outer wall of the pump housing (1), characterized in that: The outer wall of the pump casing (1) is provided with a heat dissipation mechanism (3), the heat dissipation mechanism (3) includes: Hollow ring (31), the hollow ring (31) is fixedly connected to the outer wall of the pump casing (1), the inner wall of the hollow ring (31) is provided with an annular groove (34), and the inner wall of the hollow ring (31) is provided with a flow equalization mechanism (4). Rotary ring (32), with a wind duct (35) fixedly connected to the left side of the rotating ring (32), and a ball bearing (36) rollingly connected to the inner wall of the rotating ring (32). Mounting frame (33) is fixedly connected to the outer wall of hollow ring (31), and a fan (37) is fixedly connected to the inner wall of mounting frame (33).

2. The heat dissipation structure for a screw vacuum pump according to claim 1, characterized in that: The flow equalization mechanism (4) includes a support base (41), which is fixedly connected to the inner wall of the hollow ring (31), and the inner wall of the support base (41) is rotatably connected to a rotating shaft (42).

3. The heat dissipation structure for a screw vacuum pump according to claim 2, characterized in that: A connecting rod (43) is fixedly connected to the outer wall of the rotating shaft (42), and a wind cup (44) is fixedly connected to the end of the connecting rod (43) away from the rotating shaft (42).

4. The heat dissipation structure for a screw vacuum pump according to claim 1, characterized in that: The rotating ring (32) has a groove (46) on the side away from the air duct (35).

5. The heat dissipation structure for a screw vacuum pump according to claim 2, characterized in that: An L-shaped rod (45) is fixedly connected to the outer wall of the rotating shaft (42). The L-shaped rod (45) is an "L"-shaped rod structure, and the end of the L-shaped rod (45) away from the rotating shaft (42) is attached to the inner wall of the slide groove (46).

6. The heat dissipation structure for a screw vacuum pump according to claim 1, characterized in that: The outer wall of the ball (36) is attached to the inner wall of the annular groove (34), and the rotating ring (32) is rotatably connected to the inner wall of the annular groove (34) through the ball (36).

7. The heat dissipation structure for a screw vacuum pump according to claim 3, characterized in that: The wind cup (44) is a hollow hemispherical structure. There are three sets of connecting rods (43). The three sets of connecting rods (43) are arranged in a circular array on the outer wall of the rotating shaft (42) with the central axis of the rotating shaft (42) as the origin. The ends of the three sets of connecting rods (43) are all equipped with wind cups (44).

8. The heat dissipation structure for a screw vacuum pump according to claim 2, characterized in that: The rotating shaft (42) is located directly below the fan (37).

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