A surface detection device for the rotor of a dry screw vacuum pump

Abstract

The present invention discloses a surface detection device for the rotor of a dry screw vacuum pump, belonging to the technical field of pump bearing detection. It includes a detection table and a rotor bearing. Blades are arranged on the outer wall of the rotor bearing. A placement driving mechanism for placing and fixing the rotor bearing to make it rotate is arranged at the upper end of the detection table. A sleeve detection mechanism for detecting the side surface of the blades is arranged at the side end of the detection table. A detection mechanism for detecting the outer wall of the rotor bearing is slidably arranged at the upper end of the detection table close to the outer surfaces of the rotor bearing and the blades. By attaching the chamfer arc detector to the connection between the rotor bearing and the blades, and attaching the detection telescopic rod to the outer surface of the rotor bearing, and detecting the distance between the distance detection rod and the wound side surface of the blades, when detecting the rotor bearing, the surfaces of the rotor bearing and the blades can be detected simultaneously, so that the surface detection speed is fast, and the detection efficiency of the surface detection of the rotor bearing is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pump rotor detection, and specifically to a surface detection device for the rotor of a dry screw vacuum pump. Background Art

[0002] A dry screw vacuum pump is a gas pumping device that uses a pair of screws to rotate synchronously and at high speed in opposite directions in a pump casing to generate suction and exhaust effects. It is mainly applied to high-purity vacuum processes, has an extremely high vacuum degree, can adapt to harsh working conditions, has the ability to extract condensable and particulate-containing gases, is particularly suitable for clean environments, and is easy to be treated against corrosion. It is especially suitable for fields such as electronics, chemical industry, biomedicine, metal processing, and food processing.

[0003] Chinese Patent discloses a rotor detection tooling and detection method (Publication No. CN115265342A). The rotor detection tooling includes a base and a bracket connected to the outside of the base. The base has a pair of first surfaces, and a second surface is provided between adjacent first surfaces. Each second surface is symmetrically arranged with respect to the first surface as the center; one end of the bracket away from the base is bent and extends to be parallel to the base, and a dial indicator mounting hole is opened at one end of the bracket away from the base. By providing an inclined second surface on the base, and the second surface is symmetrically arranged with respect to the first surface as the center, the center of the rotor placed on the base is made to be consistent with the center of the base in the height direction, so as to ensure the accuracy of the measurement result. Through the detection method of the present invention, the traditional manual measurement by feel can be avoided, and the first measured data and the second measured data of the rotor can be measured, and compared with the first reference data and the second reference data, so as to quickly judge whether the size of the rotor is qualified and accurate.

[0004] When the above-mentioned existing surface detection device for a vacuum pump rotor detects the blades provided on the rotor bearing, a detection rod is used to abut against the surface of the blades of the rotor bearing, the rotor bearing is rotated, the detection rod is moved, and the flatness of the surface of the rotor bearing is detected. After repeatedly detecting the surface of the blades of the rotor bearing in this way, the unevenness data of the surface of the blades of the rotor bearing is calculated. When machining the matching rotor bearing group, machining is carried out according to the obtained data to make the rotor bearing group fit, and then the rotor bearing is detected. The time taken for the detection process is long, resulting in low efficiency of the surface detection of the vacuum pump rotor. Therefore, the present invention provides a surface detection device for the rotor of a dry screw vacuum pump to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a surface detection device for the rotor of a dry screw vacuum pump to solve the problem of low efficiency of the surface detection of the vacuum pump rotor mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A surface detection device for the rotor of a dry screw vacuum pump, comprising a detection table and a rotor bearing. Vanes are arranged on the outer wall of the rotor bearing. A placing and driving mechanism for placing and fixing the rotor bearing and enabling it to rotate is arranged at the upper end of the detection table. A sleeve detection mechanism for detecting the side surface of the vane is arranged at the side end of the detection table. A detection mechanism for detecting the outer wall of the rotor bearing is slidably arranged at the upper end of the detection table close to the outer surfaces of the rotor bearing and the vane.

[0008] As a further scheme of the present invention, the placing and driving mechanism includes a placing frame, and the placing frame is fixedly installed at the upper end of the detection table. A rotating cylinder is rotatably installed at the upper end of the placing frame. A rotating rod is slidably installed inside the rotating cylinder. One end of the rotating rod away from the rotating cylinder is fixedly installed with a fixed cylinder, and both ends of the rotor bearing are fixedly placed inside the fixed cylinder.

[0009] As a further scheme of the present invention, a pushing telescopic rod is fixedly installed at the side end of the placing frame close to the rotating rod. The output end of the pushing telescopic rod is fixedly installed with a linkage plate. A rotating ring is rotatably installed at the upper end of the linkage plate, and the rotating ring is fixedly installed at one end of the rotating rod away from the fixed cylinder. A driving motor is fixedly installed at the upper end of the detection table close to the rotating ring. The output end of the driving motor is fixedly installed with a transmission telescopic rod. One end of the transmission telescopic rod away from the driving motor is fixedly installed with a driving wheel. A transmission belt is wound and installed on the outer wall of the driving wheel. One end of the transmission belt away from the driving wheel is wound and installed on the outer wall of the rotating ring.

[0010] As a further scheme of the present invention, the sleeve detection mechanism includes an installation frame. A detection frame is fixedly installed at the upper end of the installation frame. A sliding rod is fixedly installed at the lower end of the detection frame. A sliding block is slidably installed inside the sliding rod. A pneumatic telescopic rod is fixedly installed at the upper end of the sliding block. A pushing block is fixedly installed at the lower end of the pneumatic telescopic rod. An installation block is fixedly installed at the lower end of the pushing block.

[0011] As a further scheme of the present invention, a pushing airbag is fixedly installed inside the installation block. A plurality of resistance detection rods are arrayed and slidably installed at both ends of the installation block. The output end of the resistance detection rod is fixedly installed with a transmission wire. One end of the transmission wire away from the resistance detection rod is fixedly installed with a processor, and the processor is fixedly installed at the upper end of the installation frame.

[0012] As a further scheme of the present invention, an air inflation pump is fixedly installed on the inner wall of the installation frame. The output end of the air inflation pump is fixedly installed with an air outlet pipe. One end of the air outlet pipe away from the air inflation pump is fixedly installed with an air vent block. Air outlet telescopic pipes are fixedly installed at both ends of the air vent block. One end of the air outlet telescopic pipe away from the air vent block is fixedly installed with a three-way pipe.

[0013] As a further solution of the present invention, an air vent pipe is fixedly installed at the lower end of the tee pipe, and an air vent valve is fixedly installed at the lower end of the air vent pipe. The air vent valve is fixedly installed at the input end of the pushing airbag. A transmission air pipe is fixedly installed at the upper end of the tee pipe, and the other end of the transmission air pipe is fixedly installed with a control valve. The control valve is fixedly installed at the input end of the pneumatic telescopic rod. A control line is fixedly installed between the output ends of the control valve and the air vent valve, and the other end of the control line is fixedly installed at the lower end of the processor.

[0014] As a further solution of the present invention, the detection mechanism includes a slide rail. A detection box is slidably installed at the upper end of the slide rail. An electric telescopic rod is fixedly installed at the side end of the detection box close to the rotor bearing. A fixing frame is fixedly installed at the output end of the electric telescopic rod. A distance detection rod is fixedly installed at the end of the fixing frame away from the electric telescopic rod. A chamfer arc detector is fixedly connected to the output end of the distance detection rod. A fixing plate is fixedly installed between the chamfer arc detectors, and a plurality of detection telescopic rods are installed at the side end of the fixing plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. When the present invention is used, by attaching the chamfer arc detector to the connection between the rotor bearing and the blade, the detection telescopic rods are attached to the outer surface of the rotor bearing, and the distance detection rod detects the distance between the coiled side surfaces of the blades. When detecting the rotor bearing, the surfaces of the rotor bearing and the blade are detected simultaneously, so the surface detection speed is fast, and the detection efficiency of the surface detection of the rotor bearing is improved.

[0017] 2. When the present invention is used, by inflating the pushing airbag, the pushing airbag pushes the resistance detection rod to exert the same force on the side surface of the blade, so that the calculated data is more accurate. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the main structure of a surface detection device for the rotor of a dry screw vacuum pump.

[0019] Figure 2 It is a schematic diagram of the structure of the placement rack in a surface detection device for the rotor of a dry screw vacuum pump.

[0020] Figure 3 It is a schematic diagram of the structure of the detection rack in a surface detection device for the rotor of a dry screw vacuum pump.

[0021] Figure 4 It is a schematic diagram of the structure of the sliding block in a surface detection device for the rotor of a dry screw vacuum pump.

[0022] Figure 5 is Figure 4 a partially enlarged structural schematic diagram of A in

[0023] Figure 6 a sectional structural schematic diagram of the mounting block in a surface detection device for the rotor of a dry screw vacuum pump.

[0024] Figure 7 a structural schematic diagram of the detection box in a surface detection device for the rotor of a dry screw vacuum pump.

[0025] Figure 8 a structural schematic diagram of the fixing frame in a surface detection device for the rotor of a dry screw vacuum pump.

[0026] In the figure: 1, detection table; 101, rotor bearing; 102, blade;

[0027] 2, placement driving mechanism; 201, placement rack; 202, rotating cylinder; 203, rotating rod; 204, fixed cylinder; 205, extrusion block;

[0028] 206, push telescopic rod; 207, linkage plate; 208, rotating ring; 209, driving motor; 210, transmission telescopic rod; 211, driving wheel; 212, transmission belt;

[0029] 3, sleeve measurement mechanism; 301, mounting frame; 302, detection frame; 303, sliding rod; 304, sliding block; 305, pneumatic telescopic rod; 306, connecting line; 307, push block; 308, mounting block; 309, roller;

[0030] 310, push airbag; 311, resistance detection rod; 312, transmission wire; 313, processor;

[0031] 314, air pump; 315, air outlet pipe; 316, ventilation block; 317, air outlet telescopic pipe; 318, three-way pipe; 319, ventilation pipe; 320, ventilation valve; 321, transmission pipe; 322, control valve; 323, control line;

[0032] 4, detection mechanism; 401, slide rail; 402, detection box; 403, electric telescopic rod; 404, moving telescopic rod; 405, telescopic spring; 406, moving cylinder; 407, fixing frame; 408, distance detection rod; 409, fixing plate; 410, detection telescopic rod; 411, chamfer arc detector; 412, transmission line; 413, data line. Specific implementation mode

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figures 1-8 , in the embodiment of the present invention, a surface detection device for the rotor of a dry screw vacuum pump includes a detection table 1 and a rotor bearing 101. Blades 102 are provided on the outer wall of the rotor bearing 101. A placement driving mechanism 2 for placing and fixing the rotor bearing 101 to make it rotate is provided at the upper end of the detection table 1. The placement driving mechanism 2 makes it more convenient to install and place the rotor bearing 101. A sleeve detection mechanism 3 for detecting the side surface of the blade 102 is provided at the side end of the detection table 1. The sleeve detection mechanism 3 makes the detection force on the side surface of the blade 102 the same. A detection mechanism 4 for detecting the outer wall of the rotor bearing 101 is slidably provided at the upper end of the detection table 1 near the outer surfaces of the rotor bearing 101 and the blade 102. The detection mechanism 4 detects the connection bending part between the rotor bearing 101 and the blade 102, so that it is not necessary to bend the detection head to fit the connection bending part during detection, thereby making the use of the surface flatness detection device more convenient.

[0035] Please refer to Figure 1 , Figure 2 , the placement driving mechanism 2 includes a placement frame 201, and the placement frame 201 is fixedly installed at the upper end of the detection table 1. A rotating cylinder 202 is rotatably installed at the upper end of the placement frame 201. A rotating rod 203 is slidably installed on the inner wall of the rotating cylinder 202. A fixing cylinder 204 is fixedly installed at the end of the rotating rod 203 away from the rotating cylinder 202. Both ends of the rotor bearing 101 are fixedly placed inside the fixing cylinder 204. An extrusion block 205 is fixedly installed on the inner wall of the fixing cylinder 204. The above extrusion block 205 is made of elastic anti-slip material. After the rotor bearing 101 is moved into the fixing cylinder 204, the fixing cylinder 204 is moved, so that the fixing cylinders 204 approach each other, and the extrusion block 205 in the fixing cylinder 204 squeezes and fixes the rotor bearing 101.

[0036] Please refer to Figure 1 , Figure 2, a push telescopic rod 206 is fixedly installed on the side end of the placement rack 201 close to the rotating rod 203, and the above-mentioned push telescopic rod 206 is a prior art and will not be elaborated here. A linkage plate 207 is fixedly installed at the output end of the push telescopic rod 206. A rotating ring 208 is rotatably installed at the upper end of the linkage plate 207, and the rotating ring 208 is fixedly installed at one end of the rotating rod 203 away from the fixed cylinder 204. When the push telescopic rod 206 is started to contract, the rotating ring 208 pushes the fixed cylinder 204 through the rotating rod 203 to squeeze the rotor bearing 101, fixing the rotor bearing 101, thereby making the installation of the rotor bearing 101 more convenient. A driving motor 209 is fixedly installed at the upper end of the detection table 1 close to the rotating ring 208. A transmission telescopic rod 210 is fixedly installed at the output end of the driving motor 209. The transmission telescopic rod 210 prevents the drive belt 212 from being damaged when the driving motor 209 drives the rotating ring 208 to rotate through the drive belt 212 and the push telescopic rod 206 contracts. A driving wheel 211 is fixedly installed at the end of the transmission telescopic rod 210 away from the driving motor 209. A drive belt 212 is wound around the outer wall of the driving wheel 211. One end of the drive belt 212 away from the driving wheel 211 is wound around the outer wall of the rotating ring 208. When it is necessary to rotate the rotor bearing 101, the driving motor 209 is started, the driving wheel 211 rotates, and the drive belt 212 drives the rotating ring 208 to start rotating, causing the fixed cylinder 204 fixing the rotor bearing 101 to start rotating, and thus the rotor bearing 101 starts rotating.

[0037] Please refer to Figures 1-5 , the sleeve testing mechanism 3 includes a mounting frame 301. A detection frame 302 is fixedly installed at the upper end of the mounting frame 301. A sliding rod 303 is fixedly installed at the lower end of the detection frame 302. A sliding block 304 is slidably installed inside the sliding rod 303. The above-mentioned sliding rod 303 is made of a resistive material, and the sliding block 304 is a conductive material. Connecting wires 306 are fixedly installed at the upper ends of both the sliding block 304 and the upper end of the mounting sliding rod 303. A pneumatic telescopic rod 305 is fixedly installed at the upper end of the sliding block 304, and the output end of the pneumatic telescopic rod 305 passes through the sliding block 304. A push block 307 is fixedly installed at the lower end of the pneumatic telescopic rod 305. A mounting block 308 is fixedly installed at the lower end of the push block 307, and a roller 309 is rotatably installed at the lower end of the mounting block 308. The roller 309 prevents the mounting block 308 from contacting the rotor bearing 101 and causing damage to the rotor bearing 101. When the pneumatic telescopic rod 305 starts to intake air, the pneumatic telescopic rod 305 starts to extend, and the pneumatic telescopic rod 305 causes the push block 307 to push the mounting block 308 between the helical side surfaces of the blade 102.

[0038] Please refer to Figures 1-5, a driving airbag 310 is fixedly installed on the inner wall of the mounting block 308. A plurality of resistance detection rods 311 are slidably installed in an array at both ends of the mounting block 308. The above-mentioned resistance detection rods 311 are prior art and will not be elaborated here. Moreover, the resistance detection rods are installed in an array and offset at both ends of the mounting block 308. The offset resistance detection rods 311 enable the resistance detection rods 311 to repeatedly and offset detect the side surface of the blade 102 when detecting back and forth, so as to make the detection data more accurate. The output end of the resistance detection rod 311 is fixedly installed with a transmission wire 312. One end of the transmission wire 312 away from the resistance detection rod 311 is fixedly installed with a processor 313. And the other end of the connection wire 306 is fixedly installed on the side end of the processor 313. The above-mentioned processor 313 is prior art and will not be elaborated here. And the processor 313 is fixedly installed on the upper end of the mounting frame 301. The data detected by the resistance detection rod 311 is transmitted to the processor 313 through the transmission wire 312, so that the processor 313 analyzes, calculates and records the detected data.

[0039] Please refer to Figures 1-6 , an air inflation pump 314 is fixedly installed on the inner wall of the mounting frame 301. The output end of the air inflation pump 314 is fixedly installed with an air outlet pipe 315. One end of the air outlet pipe 315 away from the air inflation pump 314 is fixedly installed with an air vent block 316. Air outlet telescopic pipes 317 are fixedly installed at both ends of the air vent block 316. The above-mentioned air outlet telescopic pipes 317 are set as foldable and telescopic pipes. After gas enters the air outlet telescopic pipes 317, the air outlet telescopic pipes 317 expand and the air outlet telescopic pipes 317 start to elongate, with a certain driving force. One end of the air outlet telescopic pipe 317 away from the air vent block 316 is fixedly installed with a three-way pipe 318.

[0040] Please refer to Figures 1-6 , a ventilation pipe 319 is fixedly installed at the lower end of the three-way pipe 318. And a ventilation valve 320 is fixedly installed at the lower end of the ventilation pipe 319. And the ventilation valve 320 is fixedly installed at the input end of the driving airbag 310. When the ventilation valve 320 is opened, gas is transmitted to the driving airbag 310 through the ventilation pipe 319, so that the driving airbag 310 starts to expand. The driving airbag 310 pushes the resistance detection rod 311 to exert the same force on the side surface of the blade 102, so as to make the calculated data more accurate. A transmission pipe 321 is fixedly installed at the upper end of the three-way pipe 318. And the other end of the transmission pipe 321 is fixedly installed with a control valve 322. And the control valve 322 is fixedly installed at the input end of the pneumatic telescopic rod 305. And the above-mentioned control valve 322 and ventilation valve 320 are both electrically controlled valves. The output ends of the control valve 322 and ventilation valve 320 are fixedly installed with control lines 323. And the other end of the control line 323 is fixedly installed at the lower end of the processor 313. By controlling the control valve 322 and ventilation valve 320 through the processor 313, it is more convenient to control the up and down movement of the mounting block 308 and the inflation of the driving airbag 310.

[0041] Please refer to Figures 2-8 , the detection mechanism 4 includes a slide rail 401. A detection box 402 is slidably installed at the upper end of the slide rail 401. An electric telescopic rod 403 is fixedly installed at the side end of the detection box 402 close to the rotor bearing 101. A moving telescopic rod 404 is slidably installed at one end of the detection box 402 close to the electric telescopic rod 403. A telescopic spring 405 is fixedly installed between the moving telescopic rod 404 and the detection box 402. The set telescopic spring 405 enables the moving telescopic rod 404 to drive the detection box 402, preventing the detection mechanism 4 from failing to fit on the outer wall of the rotor bearing 101 due to the increase in the winding distance of the blade 102 during the detection process. A moving cylinder 406 is rotatably installed at the output end of the moving telescopic rod 404. The set moving telescopic rod 404 enables the rotating cylinder 202 to be attached to the side surface of the blade 102 when detection is required, causing the detection box 402 to start moving when the rotor bearing 101 rotates. A fixed frame 407 is fixedly installed at the output end of the electric telescopic rod 403. A distance detection rod 408 is fixedly installed at the end of the fixed frame 407 away from the electric telescopic rod 403. A chamfer arc detector 411 is fixedly connected to the output end of the distance detection rod 408. The above chamfer arc detector 411 is a prior art and will not be elaborated here. The chamfer arc detector 411 is made of multiple resistive telescopic rods supporting an arc plate around the center of a circle. A fixing plate 409 is fixedly installed between the chamfer arc detectors 411. A plurality of detection telescopic rods 410 are installed at the side end of the fixing plate 409. The above detection telescopic rods 410 are prior art and will not be elaborated here. When the detection telescopic rods 410 contact the side surface of the blade 102 for flatness detection, the data of the contraction and movement of the detection telescopic rods 410 are the detected surface flatness data. Transmission lines 412 are fixedly installed at the output ends of the chamfer arc detector 411, the distance detection rod 408, and the detection telescopic rods 410. The transmission lines 412 are wound into a data line 413. The other end of the data line 413 is fixedly installed at the lower end of the processor 313. The chamfer arc detector 411 detects the angle at the connection between the rotor bearing 101 and the blade 102. The distance detection rod 408 detects the winding distance of the blade 102. The detection telescopic rods 410 detect the roughness of the outer surface of the rotor bearing 101. All the data are aggregated to the data line 413 through the transmission lines 412 and then transmitted to the processor 313 through the data line 413, making the detection data more rapid.

[0042] The working principle of the present invention is as follows: When it is necessary to detect the processed rotor bearing 101, one end of the rotor bearing 101 is placed in the fixed cylinder 204, the other end of the rotor bearing 101 is lifted, the pushing telescopic rod 206 is started, and the pushing telescopic rod 206 drives the linkage plate 207 to move, so that the rotating rod 203 moves, and the fixed cylinders 204 approach each other to squeeze and fix the rotor bearing 101 inside the fixed cylinder 204, thereby making the installation of the rotor bearing 101 more convenient;

[0043] After the rotor bearing 101 is fixed, after moving the slider to a suitable position, the control valve 322 is opened through the processor 313, so that the pneumatic telescopic rod 305 pushes the roller 309 provided at the lower end of the mounting block 308 to abut against the outer wall of the rotor bearing 101, thereby preventing the installation part of the detection device from contacting the rotor bearing 101 and causing frictional damage;

[0044] After the roller 309 abuts against the outer wall of the rotor bearing 101, the air vent valve 320 is opened to inflate the pushing airbag 310, so that the pushing airbag 310 pushes the abutting end of the resistance detection rod 311 to abut against the side surface of the blade 102. The pushing force of the pushing airbag 310 on the resistance detection rod 311 is the same, so that the detection data is more accurate;

[0045] At the same time, after moving the detection box 402 to a suitable position, the moving telescopic rod 404 is started, so that the moving cylinder 406 fits on the side surface of the blade 102. When the rotor bearing 101 rotates, the blade 102 pushes the moving cylinder 406 to move, so that the detection box 402 moves. The electric telescopic rod 403 is started to make the chamfer arc detector 411 fit at the connection between the rotor bearing 101 and the blade 102, and the detection telescopic rod 410 fits on the outer surface of the rotor bearing 101, and the distance between the distance detection rod 408 and the wound side surface of the blade 102 is detected. Therefore, when the rotor bearing 101 is detected, the surface flatness of the rotor bearing 101 and the blade 102 is detected at the same time, thereby increasing the detection speed.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A dry screw vacuum pump rotor surface detection device, comprising a detection platform (1) and a rotor bearing (101), characterized in that: The outer wall of the rotor bearing (101) is provided with a blade (102); the upper end of the detection platform (1) is provided with a placement drive mechanism (2) for placing and fixing the rotor bearing (101) so as to rotate the rotor bearing (101); the side end of the detection platform (1) is provided with a sleeve testing mechanism (3) for testing the side surface of the blade (102); and the upper end of the detection platform (1) close to the rotor bearing (101) and the outer surface of the blade (102) is provided with a testing mechanism (4) for testing the outer wall of the rotor bearing (101); The placement drive mechanism (2) comprises a placement frame (201), and the placement frame (201) is fixedly mounted on the upper end of the detection platform (1); a rotating cylinder (202) is rotatably mounted on the upper end of the placement frame (201); a rotating rod (203) is slidably mounted on the inner wall of the rotating cylinder (202); a fixed cylinder (204) is fixedly mounted on one end of the rotating rod (203) away from the rotating cylinder (202); and both ends of the rotor bearing (101) are fixedly placed inside the fixed cylinder (204); A pushing telescopic rod (206) is fixedly mounted on the side end of the placement rack (201) close to the rotating rod (203), a linkage plate (207) is fixedly mounted on the output end of the pushing telescopic rod (206), a rotating circle (208) is rotatably mounted on the upper end of the linkage plate (207), and the rotating circle (208) is fixedly mounted on the end of the rotating rod (203) away from the fixed cylinder (204), a driving motor (209) is fixedly mounted on the upper end of the detection platform (1) close to the rotating circle (208), a transmission telescopic rod (210) is fixedly mounted on the output end of the driving motor (209), a driving wheel (211) is fixedly mounted on the end of the transmission telescopic rod (210) away from the driving motor (209), a transmission belt (212) is wound around the outer wall of the driving wheel (211), and the end of the transmission belt (212) away from the driving wheel (211) is wound around the outer wall of the rotating circle (208); The detection mechanism (4) comprises a slide rail (401), a detection box (402) is slidably mounted on the upper end of the slide rail (401), an electric telescopic rod (403) is fixedly mounted on the side end of the detection box (402) close to the rotor bearing (101), a fixing frame (407) is fixedly mounted on the output end of the electric telescopic rod (403), a distance detection rod (408) is fixedly mounted on one end of the fixing frame (407) away from the electric telescopic rod (403), the output end of the distance detection rod (408) is fixedly connected to a chamfer arc detector (411), a fixing plate (409) is fixedly mounted between the chamfer arc detectors (411), and a plurality of detection telescopic rods (410) are mounted on the side end of the fixing plate (409).

2. A dry screw vacuum pump rotor surface detection device according to claim 1, characterized in that: The sleeve testing mechanism (3) comprises a mounting frame (301), a detection frame (302) is fixedly mounted on the upper end of the mounting frame (301), a sliding rod (303) is fixedly mounted on the lower end of the detection frame (302), a sliding block (304) is slidably mounted inside the sliding rod (303), a pneumatic telescopic rod (305) is fixedly mounted on the upper end of the sliding block (304), a pushing block (307) is fixedly mounted on the lower end of the pneumatic telescopic rod (305), and a mounting block (308) is fixedly mounted on the lower end of the pushing block (307).

3. A dry screw vacuum pump rotor surface detection device according to claim 2, characterized in that: A pushing airbag (310) is fixedly mounted on the inner wall of the mounting block (308); a plurality of resistance detection rods (311) are slidably mounted in an array at both ends of the mounting block (308); a transmission line (312) is fixedly mounted on the output end of the resistance detection rod (311); a processor (313) is fixedly mounted on one end of the transmission line (312) away from the resistance detection rod (311); and the processor (313) is fixedly mounted on the upper end of the mounting frame (301).

4. A dry screw vacuum pump rotor surface detection device according to claim 3, characterized in that: An air pump (314) is fixedly mounted on the inner wall of the mounting frame (301); an air outlet pipe (315) is fixedly mounted on the output end of the air pump (314); a ventilation block (316) is fixedly mounted on one end of the air outlet pipe (315) away from the air pump (314); air outlet telescopic pipes (317) are fixedly mounted on both ends of the ventilation block (316); and a three-way pipe (318) is fixedly mounted on one end of the air outlet telescopic pipe (317) away from the ventilation block (316).

5. A dry screw vacuum pump rotor surface detection device according to claim 4, characterized in that: A ventilation pipe (319) is fixedly mounted on the lower end of the three-way pipe (318), and a ventilation valve (320) is fixedly mounted on the lower end of the ventilation pipe (319), and the ventilation valve (320) is fixedly mounted on the input end of the push airbag (310); an air transmission pipe (321) is fixedly mounted on the upper end of the three-way pipe (318), and a control valve (322) is fixedly mounted on the other end of the air transmission pipe (321), and the control valve (322) is fixedly mounted on the input end of the pneumatic telescopic rod (305); a control line (323) is fixedly mounted on the output ends of the control valve (322) and the ventilation valve (320), and the other end of the control line (323) is fixedly mounted on the lower end of the processor (313).

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