Dry-type screw vacuum pump rotor surface detection device

Abstract

The invention discloses a dry-type screw vacuum pump rotor surface detection device, and relates to the technical field of pump bearing detection, the dry-type screw vacuum pump rotor surface detection device comprises a detection table and a rotor bearing, the outer wall of the rotor bearing is provided with blades, and the upper end of the detection table is provided with a placement driving mechanism for placing and fixing the rotor bearing to enable the rotor bearing to rotate; the side end of the detection table is provided with a sleeving detection mechanism for detecting the side surface of the blade, and the upper end, close to the rotor bearing and the outer surface of the blade, of the detection table is slidably provided with a detection mechanism for detecting the outer wall of the rotor bearing. The detection telescopic rod is attached to the outer surface of the rotor bearing, and the distance detection rod detects the distance between the winding side surfaces of the blades, so that when the rotor bearing is detected, the surfaces of the rotor bearing and the blades are detected at the same time, the surface detection speed is high, and the detection efficiency of rotor bearing surface detection is improved.

Description

Technical Field

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

[0002] Dry screw vacuum pump is an exhaust device that uses a pair of screws to rotate synchronously at high speed in opposite directions in the pump casing to produce suction and exhaust effects. It is mainly used in high-purity vacuum process. It has extremely high vacuum degree and can adapt to harsh working conditions. It has the ability to extract condensable and particulate gases. It is particularly suitable for clean environments and is easy to be treated with anti-corrosion. It is particularly suitable for electronics, chemical industry, biomedicine, metal processing, food processing and other fields.

[0003] A Chinese patent discloses a rotor detection tool and detection method (publication number CN115265342A), wherein the rotor detection tool includes a base and a bracket connected to the outside of the base, wherein the base has a pair of first faces, and a second face between adjacent first faces, and each second face is symmetrically arranged with the first face as the center; the end of the bracket away from the base is bent and extended to be parallel to the base, and the end of the bracket away from the base is provided with a micrometer mounting hole. The invention sets an inclined second face on the base, and the second face is symmetrically arranged relative to the center of the first face, so that the center of the rotor placed on the base is consistent with the center of the base in the height direction, so as to ensure the accuracy of the measurement result. The detection method described in the invention can avoid the traditional manual method of measuring by feel, and can measure the first measured data and the second measured data of the rotor, and compare them with the first reference data and the second reference data, so as to quickly determine whether the size of the rotor is qualified and accurate.

[0004] When the above-mentioned existing vacuum pump rotor surface detection device detects the blades set on the rotor bearing, it uses a detection rod to contact the blade surface of the rotor bearing, rotates the rotor bearing, moves the detection rod, and detects the flatness of the rotor bearing surface. After repeatedly detecting the blade surface of the rotor bearing, the surface uneven flatness data of the rotor bearing blade is calculated, so that when processing the matching rotor bearing group, the obtained data is used for processing to make the rotor bearing group fit, and then the rotor bearing is detected. The detection process takes a long time, resulting in low efficiency of vacuum pump rotor surface detection. Therefore, the present invention provides a dry screw vacuum pump rotor surface detection device to solve the above-mentioned problems. Summary of the invention

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

[0006] To achieve the above object, the present invention provides the following technical solutions: A dry screw vacuum pump rotor surface detection device comprises a detection platform and a rotor bearing, wherein blades are arranged on the outer wall of the rotor bearing, a placement drive mechanism for placing and fixing the rotor bearing and rotating the rotor bearing is arranged at the upper end of the detection platform, a sleeve detection mechanism for detecting the side surface of the blade is arranged at the side end of the detection platform, and a detection mechanism for detecting the outer wall of the rotor bearing is slidably arranged at the upper end of the detection platform close to the rotor bearing and the outer surface of the blade.

[0007] As a further solution of the present invention, the placement drive mechanism includes a placement frame, and the placement frame is fixedly installed on the upper end of the detection table, a rotating cylinder is rotatably installed on the upper end of the placement frame, a rotating rod is slidably installed on the inner wall of the rotating cylinder, a fixed cylinder is fixedly installed on one end of the rotating rod away from the rotating cylinder, and both ends of the rotor bearing are fixedly placed inside the fixed cylinder.

[0008] As a further scheme of the present invention, a pushing telescopic rod is fixedly installed on the side end of the placement rack near the rotating rod, a linkage plate is fixedly installed on the output end of the pushing telescopic rod, a rotating circle is rotatably installed on the upper end of the linkage plate, and the rotating circle is fixedly installed on the end of the rotating rod away from the fixed cylinder, a driving motor is fixedly installed on the upper end of the detection platform near the rotating circle, a transmission telescopic rod is fixedly installed on the output end of the driving motor, a driving wheel is fixedly installed on the end of the transmission telescopic rod away from the driving motor, a transmission belt is wound on the outer wall of the driving wheel, and the end of the transmission belt away from the driving wheel is wound on the outer wall of the rotating circle.

[0009] As a further solution of the present invention, the sleeve measuring mechanism includes a mounting frame, a detection frame is fixedly installed on the upper end of the mounting frame, a sliding rod is fixedly installed on the lower end of the detection frame, a sliding block is slidingly installed inside the sliding rod, a pneumatic telescopic rod is fixedly installed on the upper end of the sliding block, a pushing block is fixedly installed on the lower end of the pneumatic telescopic rod, and a mounting block is fixedly installed on the lower end of the pushing block.

[0010] As a further solution of the present invention, a push airbag is fixedly installed on the inner wall of the mounting block, a plurality of resistance detection rods are slidably installed in an array at both ends of the mounting block, a transmission line is fixedly installed on the output end of the resistance detection rod, a processor is fixedly installed on the end of the transmission line away from the resistance detection rod, and the processor is fixedly installed on the upper end of the mounting frame.

[0011] As a further solution of the present invention, an air pump is fixedly installed on the inner wall of the mounting frame, an air outlet pipe is fixedly installed on the output end of the air pump, a ventilation block is fixedly installed on the end of the air outlet pipe away from the air pump, air outlet telescopic tubes are fixedly installed on both ends of the ventilation block, and a three-way pipe is fixedly installed on the end of the air outlet telescopic tube away from the ventilation block.

[0012] As a further solution of the present invention, a ventilation pipe is fixedly installed on the lower end of the three-way pipe, and a ventilation valve is fixedly installed on the lower end of the ventilation pipe, and the ventilation valve is fixedly installed on the input end of the push airbag, an air transmission pipe is fixedly installed on the upper end of the three-way pipe, and a control valve is fixedly installed on the other end of the air transmission pipe, and the control valve is fixedly installed on the input end of the pneumatic telescopic rod, and control lines are fixedly installed on the output ends of the control valve and the ventilation valve, and the other end of the control line is fixedly installed on the lower end of the processor.

[0013] As a further solution of the present invention, the detection mechanism includes a slide rail, a detection box is slidably installed on the upper end of the slide rail, an electric telescopic rod is fixedly installed on the side end of the detection box close to the rotor bearing, a fixed frame is fixedly installed on the output end of the electric telescopic rod, a distance detection rod is fixedly installed on the end of the fixed frame away from the electric telescopic rod, the output end of the distance detection rod is fixedly connected to a chamfer arc detector, a fixed plate is fixedly installed between the chamfer arc detectors, and a plurality of detection telescopic rods are installed on the side end of the fixed plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, the chamfer arc detector is attached to the connection between the rotor bearing and the blade, the detection telescopic rod is attached to the outer surface of the rotor bearing, and the distance detection rod detects the distance between the winding side surfaces of the blade, so that when the rotor bearing is detected, the surfaces of the rotor bearing and the blade are detected at the same time, so that the surface detection speed is fast, thereby improving the detection efficiency of the rotor bearing surface detection.

[0015] 2. When the present invention is used, by inflating the pushing airbag, the pushing airbag pushes the resistance detection rod to squeeze the side surface of the blade with the same force, thereby making the calculated data more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the main structure of a dry screw vacuum pump rotor surface detection device.

[0017] Figure 2 The present invention is a schematic diagram of the structure of a placement frame in a dry screw vacuum pump rotor surface detection device.

[0018] Figure 3 The present invention is a schematic diagram of the structure of a detection frame in a dry screw vacuum pump rotor surface detection device.

[0019] Figure 4 The figure is a schematic diagram of the structure of a sliding block in a dry screw vacuum pump rotor surface detection device.

[0020] Figure 5 for Figure 4Schematic diagram of the locally enlarged structure of A in the middle.

[0021] Figure 6 The present invention is a schematic diagram of the cross-sectional structure of a mounting block in a dry screw vacuum pump rotor surface detection device.

[0022] Figure 7 The present invention is a schematic diagram of the structure of a detection box in a dry screw vacuum pump rotor surface detection device.

[0023] Figure 8 The present invention is a schematic diagram of the structure of a fixing frame in a dry screw vacuum pump rotor surface detection device.

[0024] In the figure: 1, test bench; 101, rotor bearing; 102, blade; 2. Placement drive mechanism; 201. Placement rack; 202. Rotation cylinder; 203. Rotation rod; 204. Fixed cylinder; 205. Extrusion block; 206, push telescopic rod; 207, linkage plate; 208, rotating circle; 209, driving motor; 210, transmission telescopic rod; 211, driving wheel; 212, transmission belt; 3. Set measuring mechanism; 301. Mounting frame; 302. Testing frame; 303. Sliding rod; 304. Sliding block; 305. Pneumatic telescopic rod; 306. Connecting wire; 307. Pushing block; 308. Mounting block; 309. Roller; 310, push airbag; 311, resistance detection rod; 312, transmission line; 313, processor; 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, air transmission pipe; 322, control valve; 323, control line; 4. Detection mechanism; 401. Slide rail; 402. Detection box; 403. Electric telescopic rod; 404. Mobile telescopic rod; 405. Telescopic spring; 406. Mobile cylinder; 407. Fixed frame; 408. Distance detection rod; 409. Fixed plate; 410. Detection telescopic rod; 411. Chamfer arc detector; 412. Transmission line; 413. Data line. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 8In an embodiment of the present invention, a dry screw vacuum pump rotor surface detection device includes a detection platform 1 and a rotor bearing 101. A blade 102 is arranged on the outer wall of the rotor bearing 101. A placement drive mechanism 2 is arranged at the upper end of the detection platform 1 to place and fix the rotor bearing 101 so that the rotor bearing 101 rotates. The placement drive mechanism 2 makes it more convenient to install and place the rotor bearing 101. A sleeve measurement mechanism 3 is arranged at the side end of the detection platform 1 to detect the side surface of the blade 102. The sleeve measurement mechanism 3 makes the force of detecting the side surface of the blade 102 the same. The detection platform 1 is slidably arranged at the upper end close to the rotor bearing 101 and the outer surface of the blade 102 with a detection mechanism 4 for detecting the outer wall of the rotor bearing 101. The detection mechanism 4 detects the connection bend between the rotor bearing 101 and the blade 102, so that the detection head does not need to be bent and fitted to the connection bend during detection, thereby making the surface flatness detection device more convenient to use.

[0027] See also Figure 1 , Figure 2 The placement drive mechanism 2 includes a placement frame 201, and the placement frame 201 is fixedly installed on the upper end of the detection table 1. A rotating cylinder 202 is rotatably installed on 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 fixed cylinder 204 is fixedly installed on the 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. An extrusion block 205 is fixedly installed on the inner wall of the fixed cylinder 204. The extrusion block 205 is set with an elastic non-slip material. After the extrusion block 205 in the fixed cylinder 204 moves the rotor bearing 101 into the inside of the fixed cylinder 204, the fixed cylinder 204 is moved, so that the fixed cylinders 204 are close to each other, and the extrusion block 205 in the fixed cylinder 204 squeezes and fixes the rotor bearing 101.

[0028] See also Figure 1 , Figure 2The side end of the placement rack 201 near the rotating rod 203 is fixedly installed with a pushing telescopic rod 206, and the above-mentioned pushing telescopic rod 206 is a prior art and will not be described in detail here. The output end of the pushing telescopic rod 206 is fixedly installed with a linkage plate 207, and a rotating circle 208 is rotatably installed on the upper end of the linkage plate 207, and the rotating circle 208 is fixedly installed on the end of the rotating rod 203 away from the fixed cylinder 204. When the telescopic rod 206 is started to shrink, the rotating circle 208 pushes the fixed cylinder 204 through the rotating rod 203 to squeeze the rotor bearing 101, fix the rotor bearing 101, and make the installation of the rotor bearing 101 more convenient. A driving motor 209 is fixedly installed on the upper end of the detection platform 1 near the rotating circle 208, and the output end of the driving motor 209 A transmission telescopic rod 210 is fixedly installed. The transmission telescopic rod 210 prevents the driving wheel 211 from driving the rotating circle 208 to rotate through the transmission belt 212, pushing the telescopic rod 206 to contract and damaging the transmission belt 212. The driving wheel 211 is fixedly installed on the end of the transmission telescopic rod 210 away from the driving motor 209. The transmission belt 212 is wound on the outer wall of the driving wheel 211, and the end of the transmission belt 212 away from the driving wheel 211 is wound on the outer wall of the rotating circle 208. When the rotor bearing 101 needs to rotate, the driving motor 209 is started, the driving wheel 211 rotates, and the transmission belt 212 drives the rotating circle 208 to start rotating, so that the fixed cylinder 204 that fixes the rotor bearing 101 starts to rotate, thereby causing the rotor bearing 101 to start rotating.

[0029] See also Figures 1 to 5 The set testing mechanism 3 includes 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, the sliding rod 303 is set to be a resistor material, the sliding block 304 is a power-carrying material, and the upper end of the power-carrying block and the upper end of the mounting sliding rod 303 are fixedly mounted with a connecting wire 306, and the upper end of the sliding block 304 is fixedly mounted with a pneumatic telescopic rod 305, and the output end of the pneumatic telescopic rod 305 is connected to the output end of the pneumatic telescopic rod 305. Through the sliding block 304, a pushing 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 pushing 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 take in air, the pneumatic telescopic rod 305 starts to extend, and the pneumatic telescopic rod 305 causes the pushing block 307 to push the mounting block 308 to between the spiral side surfaces of the blade 102.

[0030] See also Figures 1 to 5A pushing airbag 310 is fixedly installed on the inner wall of the mounting block 308, and 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 described in detail here. The resistance rod detection rods are staggered in the arrays at both ends of the mounting block 308. The staggered resistance detection rods 311 enable the resistance detection rods 311 to detect the side of the blade 102 back and forth, and the repeated staggered detection makes the detection data more accurate. A transmission line 312 is fixedly installed on the output end of the resistance detection rod 311, and a processor 313 is fixedly installed on one end of the transmission line 312 away from the resistance detection rod 311, and the other end of the connecting line 306 is fixedly installed on the side end of the processor 313. The above-mentioned processor 313 is prior art and will not be described in detail here. The processor 313 is fixedly installed on the upper end of the mounting frame 301, and the data detected by the resistance detection rod 311 is transmitted to the processor 313 through the transmission line 312, so that the processor 313 analyzes, calculates and records the detected data.

[0031] See also Figures 1 to 6 An air pump 314 is fixedly installed on the inner wall of the mounting frame 301, and an air outlet pipe 315 is fixedly installed on the output end of the air pump 314. A ventilation block 316 is fixedly installed on the end of the air outlet pipe 315 away from the air pump 314, and air outlet telescopic pipes 317 are fixedly installed on both ends of the ventilation block 316. The above-mentioned air outlet telescopic pipes 317 are configured as foldable and telescopic pipes, so that after gas enters the air outlet telescopic pipe 317, the air outlet telescopic pipe 317 expands, and the air outlet telescopic pipe 317 begins to stretch, with a certain driving force, and a three-way pipe 318 is fixedly installed on the end of the air outlet telescopic pipe 317 away from the ventilation block 316.

[0032] See also Figures 1 to 6 The lower end of the three-way pipe 318 is fixedly installed with a vent pipe 319, and the lower end of the vent pipe 319 is fixedly installed with a vent valve 320, and the vent valve 320 is fixedly installed at the input end of the push airbag 310. When the vent valve 320 is opened, the gas is transmitted to the push airbag 310 through the vent pipe 319, so that the push airbag 310 begins to expand, and the push airbag 310 pushes the resistance detection rod 311 to squeeze the side surface of the blade 102 with the same force, so that the calculation data is more accurate. The upper end of the three-way pipe 318 is fixedly installed with a gas transmission pipe 321, and A control valve 322 is fixedly installed at the other end of the air transmission tube 321, and the control valve 322 is fixedly installed at the input end of the pneumatic telescopic rod 305. The control valve 322 and the ventilation valve 320 are both electrically controlled valves. A control line 323 is fixedly installed at the output end of the control valve 322 and the ventilation valve 320, and the other end of the control line 323 is fixedly installed at the lower end of the processor 313. The control valve 322 and the ventilation valve 320 are controlled by the processor 313, so that the up and down movement of the mounting block 308 and the expansion of the airbag 310 can be controlled more conveniently.

[0033] See also Figures 2 to 8 The detection mechanism 4 includes a slide rail 401, a detection box 402 is slidably installed on the upper end of the slide rail 401, an electric telescopic rod 403 is fixedly installed on the side end of the detection box 402 close to the rotor bearing 101, a mobile telescopic rod 404 is slidably installed on one end of the detection box 402 close to the electric telescopic rod 403, and a telescopic spring 405 is fixedly installed between the mobile telescopic rod 404 and the detection box 402, and the telescopic spring 405 is set to enable the mobile telescopic rod 404 to drive the detection box 402, so as to avoid the detection mechanism 4 being unable to fit on the rotor bearing 10 due to the increase in the winding distance of the blade 102 during the detection process. 1, a moving cylinder 406 is rotatably installed at the output end of the mobile telescopic rod 404, and the mobile telescopic rod 404 is set so that when detection is needed, the rotating cylinder 202 is attached to the side surface of the blade 102, so that the rotor bearing 101 pushes the detection box 402 to start moving during the rotation process, and the output end of the electric telescopic rod 403 is fixedly installed with a fixing frame 407, and the end of the fixing frame 407 away from the electric telescopic rod 403 is fixedly installed with a distance detection rod 408, and the output end of the distance detection rod 408 is fixedly connected with a chamfer arc detector 411, and the above-mentioned chamfer arc detector 411 is a prior art The chamfer arc detector 411 is made of a plurality of resistor telescopic rods supporting an arc plate around the center of a circle. A fixed plate 409 is fixedly installed between the chamfer arc detectors 411. A plurality of detection telescopic rods 410 are installed at the side ends of the fixed plates 409. The detection telescopic rods 410 are prior art and are not described in detail 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 is the detected surface flatness data. The chamfer arc detector 411 is connected to the distance detection rod 408 and the detection telescopic rod 409. The output ends of the devices 10 are fixedly installed with transmission lines 412, and the transmission lines 412 are wound into data lines 413, and the other end of the data lines 413 is fixedly installed at the lower end of the processor 313, the chamfer arc detector 411 detects the angle of the connection between the rotor bearing 101 and the blade 102, the distance detection rod 408 detects the winding distance of the blade 102, and the detection telescopic rod 410 detects the roughness of the outer surface of the rotor bearing 101, all the data tube transmission lines 412 are aggregated into the data lines 413, and then transmitted to the processor 313 through the data lines 413, so that the detection data can be faster.

[0034] The working principle of the present invention is: when the processed rotor bearing 101 needs to be tested, 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 telescopic rod 206 is started, the telescopic rod 206 is pushed to drive the detection frame 302 to move, the rotating rod 203 is moved, the fixed cylinders 204 are brought close to each other, the rotor bearing 101 is squeezed and fixed inside the fixed cylinder 204, so that the installation of the rotor bearing 101 is more convenient; After the rotor bearing 101 is fixed and the slider is moved 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 contact the outer wall of the rotor bearing 101, thereby preventing the mounting part of the detection device from contacting with the rotor bearing 101 and causing friction damage; When the roller 309 contacts the outer wall of the rotor bearing 101, the vent valve 320 is opened to expand the push airbag 310, so that the push airbag 310 pushes the contact end of the resistance detection rod 311 to contact the side surface of the blade 102. The force of the push airbag 310 pushing the resistance detection rod 311 is the same, so that the detection data is more accurate. At the same time, after the detection box 402 is moved to a suitable position, the moving telescopic rod 404 is started, so that the moving cylinder 406 is attached to the side surface of the blade 102, so that when the rotor bearing 101 rotates, the blade 102 pushes the moving cylinder 406 to move, so that the detection box 402 moves, and the electric telescopic rod 403 is started, so that the chamfer arc detector 411 is attached to the connection between the rotor bearing 101 and the blade 102, and the detection telescopic rod 410 is attached to the outer surface of the rotor bearing 101, and the distance detection rod 408 detects the distance between the winding side surfaces of the blade 102, so that 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.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which 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 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 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).

3. A dry screw vacuum pump rotor surface detection device according to claim 2, characterized in that: 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 one end of the transmission belt (212) away from the driving wheel (211) is wound around the outer wall of the rotating circle (208).

4. 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).

5. A dry screw vacuum pump rotor surface detection device according to claim 4, 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).

6. A dry screw vacuum pump rotor surface detection device according to claim 5, 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).

7. A dry screw vacuum pump rotor surface detection device according to claim 6, 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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