Roots vacuum pump rotor

Abstract

The utility model relates to roots vacuum pump technical field especially relates to a roots vacuum pump rotor, including connecting shaft, the connecting shaft surface is connected with a plurality of connecting blocks fixedly, the connecting block is connected with the cavity of connecting shaft, the inwall fixed connection of connecting shaft has the link frame, the link frame inner thread is connected with the adjusting lever, the utility model has the beneficial effect that: through the flow guide vane can guide the directional flow of airflow and utilize the centrifugal force of rotor rotation to form forced airflow to direct the heat along the direction of flow guide vane, further enhanced the heat dissipation efficiency of the heat dissipation port, the rotation adjusting lever makes it along the link frame moves, cooperation transmission part, guide rail, return spring, transmission rod, slide and slide rod can drive a plurality of flow guide vanes rotate in the heat dissipation port, to be able to adjust the angle of flow guide vane according to the gas medium or temperature etc. of roots vacuum pump condition, the guiding effect of flow guide vane to airflow is optimized, the applicability of device is improved.

Description

Technical Field

[0001] This utility model relates to the field of Roots vacuum pumps, and in particular to a Roots vacuum pump rotor. Background Technology

[0002] A Roots vacuum pump is a type of variable displacement vacuum pump without internal compression. Its core working principle involves the synchronous, counter-rotating of one or more pairs of rotors within the pump chamber. Utilizing the tiny gaps (typically 0.1-0.8 mm) between the rotors and between the rotors and the pump casing's inner wall to form a sealed space, the rotors' pushing action forces gas from the inlet to the outlet, thus achieving pumping and vacuuming. The rotor of the Roots vacuum pump is the core component, usually a pair of meshing, lobe-shaped rotating bodies. Its structure and performance directly determine the pumping efficiency, vacuum level, and service life of the vacuum pump.

[0003] In the prior art, some Roots vacuum pump rotors mainly include a rotor connecting shaft, a rotor connecting column fixed to the surface of the rotor connecting shaft, and a rotor sleeve block sleeved on the surface of the rotor connecting column. An air passage is opened in the rotor connecting column, and a heat dissipation port communicating with the air passage is penetrated through the surface of the rotor sleeve block. When the rotor is running, the heat of the rotor connecting shaft will flow to the heat dissipation port through the air passage and be discharged through the heat dissipation port, thereby achieving heat dissipation of the rotor. However, the heat dissipation port is directly connected to the outside and no flow guiding structure is set, which makes it easy for the airflow around the heat dissipation port to form turbulent vortices when the rotor rotates at high speed, making it difficult to form a directional heat dissipation channel. As a result, hot air is difficult to be effectively carried out, and heat is easy to be retained inside the rotor, thereby shortening the service life of the rotor. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a Roots vacuum pump rotor that solves the problem mentioned in the background art: the heat dissipation port of some Roots vacuum pump rotors is directly connected to the outside and no flow guiding structure is provided, which makes it easy for the airflow around the heat dissipation port to form turbulent vortices when the rotor rotates at high speed, making it difficult to form a directional heat dissipation channel. As a result, hot air is difficult to be effectively carried out, and heat is easily retained inside the rotor, thereby shortening the service life of the rotor.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a Roots vacuum pump rotor, including a connecting shaft, a plurality of connecting blocks are fixedly connected to the surface of the connecting shaft, the connecting blocks communicate with the cavity of the connecting shaft, a connecting frame is fixedly connected to the inner wall of the connecting shaft, and an adjusting rod is threadedly connected to the connecting frame;

[0006] A sleeve block is fitted onto the surface of a connecting block. Heat dissipation vents are provided on both sides of the sleeve block. Several guide vanes are rotatably connected to the inner wall of each heat dissipation vent. Several sliding rods are fixedly connected to the inner wall of the sleeve block. A sliding seat is slidably connected to the surface of each sliding rod. A guide rail is fixedly connected to the inner wall of the sleeve block on one side of the sliding rod. A transmission component is slidably connected within the guide rail. A return spring is fitted onto the surface of the transmission component. A transmission rod is rotatably connected to one side of the transmission component, and the other end of the transmission rod is rotatably connected to the sliding seat.

[0007] Optionally, the cross-section of the guide vane is streamlined, and the surface of the guide vane is provided with a slot, which is strip-shaped.

[0008] Optionally, one end of the adjusting rod is frustum-shaped, and one end of the transmission component is trapezoidal.

[0009] Optionally, a plurality of first reinforcing plates are fixedly connected to the inner wall of the connecting block, and a plurality of second reinforcing plates are fixedly connected to the inner wall of the sleeve block.

[0010] Optionally, one end of the adjusting rod extends into a connecting shaft, and the surface of the adjusting rod is provided with scale markings.

[0011] Optionally, a first positioning plate is fixedly connected to the surface of the adjusting rod, and a second positioning plate is fixedly connected to the surface of the transmission component.

[0012] Optionally, a number of fixing bolts are inserted inside the sleeve block, and the fixing bolts are threadedly connected to the connecting block.

[0013] Optionally, the bottom end of the sleeve is arc-shaped, and the size of the sleeve is slightly larger than the size of the connecting block.

[0014] The beneficial effects of this utility model are as follows: the guide vanes can guide the airflow in a directional manner and use the centrifugal force of the rotor rotation to form a forced airflow to dissipate heat along the direction of the guide vanes, further enhancing the heat dissipation efficiency of the heat dissipation port. Rotating the adjusting rod causes it to move along the connecting frame, and in conjunction with the transmission components, guide rail, return spring, transmission rod, slide block and slide rod, it can drive several guide vanes to rotate in the heat dissipation port. Thus, the angle of the guide vanes can be adjusted according to the pumping medium or temperature of the Roots vacuum pump, optimizing the guiding effect of the guide vanes on the airflow and improving the applicability of the device.

[0015] Loosen the fixing bolts until they detach from the connecting block, then the sleeve can be removed from the surface of the connecting block, making it easier to maintain the rotor. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a Roots vacuum pump rotor according to the present invention;

[0018] Figure 2 This is a schematic diagram of the connecting shaft structure of a Roots vacuum pump rotor according to the present invention;

[0019] Figure 3 This is a schematic diagram of the adjusting rod structure of a Roots vacuum pump rotor according to the present invention;

[0020] Figure 4 This is a schematic diagram of the sleeve structure of a Roots vacuum pump rotor according to the present invention;

[0021] Figure 5 This is a schematic diagram of the guide vane structure of a Roots vacuum pump rotor according to the present invention;

[0022] Figure label:

[0023] 1. Connecting shaft; 101. Connecting block; 102. Connecting frame; 103. Adjusting rod; 1031. Scale markings; 1032. First positioning plate; 104. First reinforcing plate;

[0024] 1. Sleeve block; 201. Heat dissipation vent; 202. Guide vane; 2021. Insertion hole; 203. Slide rod; 204. Slide base; 205. Guide rail; 206. Transmission component; 2061. Second positioning plate; 207. Return spring; 208. Transmission rod; 209. Second reinforcing plate;

[0025] 2. Fixing bolts. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] Please see Figures 1 to 5This utility model provides a technical solution: a Roots vacuum pump rotor, comprising: a connecting shaft 1, a plurality of connecting blocks 101 fixedly connected to the surface of the connecting shaft 1, the connecting blocks 101 communicating with the cavity of the connecting shaft 1, a connecting frame 102 fixedly connected to the inner wall of the connecting shaft 1, and an adjusting rod 103 threadedly connected to the connecting frame 102; a sleeve block 2 sleeved on the surface of the connecting blocks 101, heat dissipation vents 201 opened on both sides of the sleeve block 2, a plurality of guide vanes 202 rotatably connected to the inner wall of the heat dissipation vents 201, a plurality of sliding rods 203 fixedly connected to the inner wall of the sleeve block 2, a sliding seat 204 slidably connected to the surface of the sliding rods 203, a guide rail 205 fixedly connected to the inner wall of the sleeve block 2 on one side of the sliding rods 203, a transmission component 206 slidably connected inside the guide rail 205, a return spring 207 sleeved on the surface of the transmission component 206, a transmission rod 208 rotatably connected to one side of the transmission component 206, and the other end of the transmission rod 208 rotatably connected to the sliding seat 204.

[0028] The heat dissipation port 201 can dissipate heat from the rotor. In conjunction with the guide vanes 202, the airflow can be directed and the centrifugal force of the rotor rotation can be used to form a forced airflow to dissipate heat along the direction of the guide vanes 202, thereby further enhancing the heat dissipation efficiency of the heat dissipation port 201.

[0029] Rotating the adjusting rod 103 causes it to move along the connecting frame 102 fixed to the inner wall of the connecting shaft 1. During this process, the adjusting rod 103 will squeeze the transmission component 206, which in turn causes the transmission component 206 to slide along the inner wall of the guide rail 205 fixed to the inner wall of the sleeve block 2 and drive the return spring 207 to extend and retract. This, in turn, causes the transmission rod 208 connected to one side of the transmission component 206 to rotate and causes the slide block 204 connected to the other end of the transmission rod 208 to slide along the surface of the slide rod 203 fixed to the inner wall of the sleeve block 2. This drives several guide vanes 202 to rotate in the heat dissipation port 201, thereby allowing the angle of the guide vanes 202 to be adjusted according to the pumping medium or temperature of the Roots vacuum pump, optimizing the guiding effect of the guide vanes 202 on the airflow and improving the applicability of the device.

[0030] Preferably, the cross-section of the guide vane 202 is streamlined, and the surface of the guide vane 202 is provided with an insertion hole 2021, which is strip-shaped.

[0031] The streamlined cross-section of the guide vane 202 reduces airflow resistance. As the slide 204 moves, the insert at its bottom end slides along the strip-shaped insertion hole 2021 on the surface of the guide vane 202, which drives the guide vane 202 to rotate.

[0032] Furthermore, one end of the adjusting rod 103 is shaped like a frustum, and one end of the transmission component 206 is shaped like a trapezoid.

[0033] The adjusting rod 103 has a frustum shape at one end and the transmission component 206 has a trapezoid shape at the other end, so that the adjusting rod 103 can drive the transmission component 206 to rise and fall while moving.

[0034] Furthermore, one end of the adjusting rod 103 extends out to the connecting shaft 1, and the surface of the adjusting rod 103 is provided with scale markings 1031.

[0035] The angle of the guide vane 202 can be accurately controlled by the scale marking 1031, thereby further improving the guiding effect of the guide vane 202 on the airflow.

[0036] Furthermore, a first positioning plate 1032 is fixedly connected to the surface of the adjusting rod 103, and a second positioning plate 2061 is fixedly connected to the surface of the transmission component 206.

[0037] The first positioning plate 1032 can limit the movement trajectory of the adjusting rod 103, and the second positioning plate 2061 can limit the movement trajectory of the transmission component 206.

[0038] Preferably, a plurality of first reinforcing plates 104 are fixedly connected to the inner wall of the connecting block 101, and a plurality of second reinforcing plates 209 are fixedly connected to the inner wall of the sleeve block 2.

[0039] The first reinforcing plate 104 can improve the rigidity of the connecting block 101 while ensuring its heat dissipation effect, and the second reinforcing plate 209 can improve the rigidity of the sleeve block 2 while ensuring its heat dissipation effect.

[0040] Please see Figures 1 to 5 This utility model provides a technical solution: a plurality of fixing bolts 3 are inserted inside the sleeve block 2, and the fixing bolts 3 are threadedly connected to the connecting block 101.

[0041] Loosen the fixing bolt 3 until it comes off the connecting block 101, and the sleeve 2 can be removed from the surface of the connecting block 101, which makes it easier to maintain the rotor.

[0042] The bottom of the sleeve 2 is arc-shaped, and the size of the sleeve 2 is slightly larger than the size of the connecting block 101.

[0043] The bottom of the sleeve 2 is arc-shaped, which allows the sleeve 2 to be tightly bonded to the surface of the connecting shaft 1 after it is assembled onto the surface of the connecting block 101.

[0044] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rotor for a Roots vacuum pump, characterized in that, include: A connecting shaft (1) is fixedly connected to a plurality of connecting blocks (101) on its surface. The connecting blocks (101) communicate with the cavity of the connecting shaft (1). A connecting frame (102) is fixedly connected to the inner wall of the connecting shaft (1). An adjusting rod (103) is threadedly connected to the connecting frame (102). A sleeve (2) is fitted onto the surface of a connecting block (101). The sleeve (2) has heat dissipation vents (201) on both sides. Several guide vanes (202) are rotatably connected to the inner wall of the heat dissipation vents (201). Several slide rods (203) are fixedly connected to the inner wall of the sleeve (2). A slide seat (204) is slidably connected to the surface of the slide rod (203). A guide rail (205) is fixedly connected to the inner wall of the sleeve (2) on one side of the slide rod (203). A transmission component (206) is slidably connected inside the guide rail (205). A reset spring (207) is fitted onto the surface of the transmission component (206). A transmission rod (208) is rotatably connected to one side of the transmission component (206). The other end of the transmission rod (208) is rotatably connected to the slide seat (204).

2. The rotor of a Roots vacuum pump according to claim 1, characterized in that, The cross-section of the guide vane (202) is streamlined, and the surface of the guide vane (202) is provided with a socket (2021), which is strip-shaped.

3. A Roots vacuum pump rotor according to claim 1, characterized in that, One end of the adjusting rod (103) is shaped like a frustum, and one end of the transmission component (206) is shaped like a trapezoid.

4. A Roots vacuum pump rotor according to claim 1, characterized in that, The inner wall of the connecting block (101) is fixedly connected with several first reinforcing plates (104), and the inner wall of the sleeve block (2) is fixedly connected with several second reinforcing plates (209).

5. A Roots vacuum pump rotor according to claim 1, characterized in that, One end of the adjusting rod (103) extends into a connecting shaft (1), and the surface of the adjusting rod (103) is provided with scale markings (1031).

6. A Roots vacuum pump rotor according to claim 1, characterized in that, The adjusting rod (103) is fixedly connected to a first positioning plate (1032), and the transmission component (206) is fixedly connected to a second positioning plate (2061).

7. A Roots vacuum pump rotor according to claim 1, characterized in that, The sleeve (2) is provided with a number of fixing bolts (3), and the fixing bolts (3) are threadedly connected to the connecting block (101).

8. A Roots vacuum pump rotor according to claim 1, characterized in that, The bottom of the sleeve (2) is arc-shaped, and the size of the sleeve (2) is slightly larger than the size of the connecting block (101).

Images