A dry screw vacuum pump rotor bearing assembly device

Abstract

The invention discloses a dry screw vacuum pump rotor bearing assembly device, which relates to the technical field of pump body assembly, and comprises a mounting table, wherein a mounting mechanism for placing and fixing a vacuum pump rotor bearing is fixedly mounted on the upper end of the mounting table, a test adjustment mechanism for rotating and docking the vacuum pump rotor bearing is arranged on the side end of the mounting mechanism, a fixing table is fixedly mounted on the mounting table near the upper end of the mounting mechanism, a vacuum pump housing is fixedly placed on the upper end of the fixing table, and the rotor bearing is rotated by meshing. When the rotor bearing is stuck, the threaded rod pushes the rotor bearing to move, so that the rotor bearings are meshed again, and the assembly connection position of the rotor bearing is repeatedly adjusted thereby, so that the assembly of the rotor bearing is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of pump body assembly, in particular to a dry screw vacuum pump rotor bearing assembly 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 an assembly positioning device for a screw vacuum pump (publication number CN118514028A), which belongs to the technical field of pump body assembly. An assembly positioning device for a screw vacuum pump comprises a frame; a sliding frame, which is vertically slidably connected to the frame, a support frame is slidably connected to the sliding frame, a first gear is rotatably connected to the support frame, a first rack and a second rack are respectively meshed at the top and bottom of the first gear, a first support plate and a second support plate are respectively fixedly connected to the first rack and the second rack, a plurality of clamping rods are slidably connected to the first support plate and the second support plate, and clamping wheels are rotatably connected to the adjacent ends of the plurality of clamping rods, a rotating plate is rotatably connected to the first support plate and the second support plate, each rotating plate is fixedly connected to a push rod, a first driving mechanism is arranged on the first support plate, and a second driving mechanism is arranged on the second support plate. The invention can reduce the probability of collision when assembling the screw rotor.

[0004] During the assembly process of the dry screw vacuum pump rotor bearing in the above-mentioned prior art, the staff needs to have rich assembly experience to avoid the rotor bearing being improperly assembled during the assembly of the dry screw vacuum pump rotor bearing, resulting in incorrect installation and adjustment of the exhaust end bearing, gap plate and other components. When the bearing is not properly installed and used, the main engine will quickly bite and damage the bearing seat and other components, resulting in the rotor bearing requiring experienced technicians to install it, resulting in low rotor bearing assembly efficiency. Therefore, the present invention provides a dry screw vacuum pump rotor bearing assembly 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 bearing assembly device to solve the problem of low rotor bearing assembly efficiency mentioned in the above background technology.

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

[0007] A dry screw vacuum pump rotor bearing assembly device comprises a mounting table, a mounting mechanism for placing and fixing a vacuum pump rotor bearing is fixedly mounted on the upper end of the mounting table, a test adjustment mechanism for rotationally docking the vacuum pump rotor bearing is arranged at the side end of the mounting mechanism, a fixing table is fixedly mounted near the upper end of the mounting mechanism, and a vacuum pump housing is fixedly placed on the upper end of the fixing table.

[0008] As a further solution of the present invention, the mounting mechanism includes a mounting frame, and the mounting mechanism is fixedly mounted on the upper end of the mounting platform, a slide rail is fixedly mounted on the upper end of the mounting frame, a sliding block is slidably mounted on the upper end of the slide rail, an electric telescopic rod is fixedly mounted between the sliding block and the mounting frame, a driving motor is fixedly mounted on the upper end of the sliding block, and a winding drum is fixedly mounted on the output end of the driving motor.

[0009] As a further solution of the present invention, a pulling rope is wound on the outer wall of the winding drum, a mounting block is fixedly installed on the lower end of the pulling rope, a sliding cylinder is rotatably installed on the inner wall of the mounting block, a sliding rod is symmetrically slidably installed on the inner wall of the sliding cylinder, a fixed cylinder is fixedly installed on one end of the sliding rod away from the sliding cylinder, and an extrusion cylinder is rotatably installed on the upper end of the fixed cylinder.

[0010] As a further solution of the present invention, a fixing rod is fixedly installed on the side end of the mounting block, and a protective cover is fixedly installed on one end of the fixing rod away from the mounting block, a buffer cylinder is fixedly installed on the side end of the protective cover close to the fixing rod, a buffer plate is slidably installed on the inner wall of the buffer cylinder, and an exhaust hole is opened at the upper end of the buffer cylinder away from the buffer plate.

[0011] As a further solution of the present invention, the test and adjustment mechanism includes a rotating motor, and the rotating motor is fixedly installed at the lower end of the mounting block, an active ring is fixedly installed at the output end of the rotating motor, a transmission belt is wound on the outer wall of the active ring, a driven ring is fixedly installed at one end of the transmission belt away from the active ring, and the driven ring is rotatably sleeved on the outer wall of the sliding cylinder.

[0012] As a further solution of the present invention, a connecting cylinder is fixedly installed on the side end of the driven circle, and a mounting cylinder is rotatably installed on the end of the connecting cylinder away from the driven circle. A threaded ring is threadedly sleeved on the outer wall of the mounting cylinder, and a threaded rod is threadedly installed on the inner wall of the mounting cylinder on the inner wall of the threaded ring, and the threaded rod is fixedly installed on the end of the sliding rod away from the fixed cylinder.

[0013] As a further solution of the present invention, a plurality of limit grooves are arranged in an array on the inner wall of the driven ring, a limit block is slidably installed on the inner wall of the limit groove, a stop block is slidably installed on the inner wall of the limit groove away from the limit block, a limit spring is fixedly installed between the stop block and the limit block, and a rotating block is fixedly installed on the outer wall of the sliding cylinder close to the limit block.

[0014] As a further solution of the present invention, a rotating circle is rotatably installed on the side end of the threaded ring close to the driven ring, a threaded telescopic rod is rotatably installed on the side end of the threaded ring, and an adjustment ring is fixedly installed on the barrel end of the threaded telescopic rod, and an adjustment block is fixedly installed on the side end of the threaded telescopic rod away from the rotating circle, and the adjustment block is slidably arranged on the inner wall of the driven ring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the present invention is used, the rotor bearing is rotated by meshing. When the rotor bearing is stuck, the threaded rod pushes the rotor bearing to move, so that the rotor bearings are meshed again, and the assembly connection position of the rotor bearing is repeatedly adjusted, so that the assembly of the rotor bearing is more convenient.

[0017] 2. When the present invention is used, when the rotor bearing needs to be docked and assembled for installation, the drive motor is started, the winding drum rotates, the pulling rope is extended, and the fixing drum is moved to the installation table, thereby reducing manual handling and making the installation and placement of the rotor bearing easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of a dry screw vacuum pump rotor bearing assembly device.

[0019] Figure 2 The figure is a schematic diagram of the structure of a protective cover in a dry screw vacuum pump rotor bearing assembly device.

[0020] Figure 3 The schematic diagram is a structural diagram of a buffer cylinder in a dry screw vacuum pump rotor bearing assembly device.

[0021] Figure 4 The figure is a schematic diagram of the structure of a mounting block in a dry screw vacuum pump rotor bearing assembly device.

[0022] Figure 5 The figure is a schematic diagram of the structure of a sliding cylinder in a dry screw vacuum pump rotor bearing assembly device.

[0023] Figure 6 The figure is a schematic diagram of the structure of a driving device in a dry screw vacuum pump rotor bearing assembly device.

[0024] Figure 7The figure is a schematic diagram of the structure of a driven ring in a dry screw vacuum pump rotor bearing assembly device.

[0025] Figure 8 The present invention is a schematic diagram of the cross-sectional structure of a driven ring in a dry screw vacuum pump rotor bearing assembly device.

[0026] In the figure: 1, mounting table; 101, fixing table; 102, vacuum pump housing;

[0027] 2. Mounting mechanism; 201. Mounting frame; 202. Slide rail; 203. Sliding block; 204. Electric telescopic rod;

[0028] 205, driving motor; 206, winding drum; 207, pulling rope; 208, mounting block; 209, sliding drum; 210, sliding rod; 211, fixing drum; 212, squeezing drum; 213, anti-sliding block;

[0029] 214, fixing rod; 215, protective cover; 216, buffer cylinder; 217, buffer plate; 218, return spring; 219, buffer strip; 220, exhaust hole;

[0030] 3. Test adjustment mechanism; 301. Rotating motor; 302. Active coil; 303. Transmission belt; 304. Driven coil; 305. Connecting cylinder; 306. Mounting cylinder; 307. Threaded coil; 308. Threaded rod;

[0031] 309, limit groove; 310, limit block; 311, stop block; 312, limit spring; 313, rotating block; 314, adjusting block; 315, threaded telescopic rod; 316, adjusting ring. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figures 1 to 8In an embodiment of the present invention, a dry screw vacuum pump rotor bearing assembly device includes a mounting platform 1, and a mounting mechanism 2 for placing and fixing a vacuum pump rotor bearing is fixedly installed on the upper end of the mounting platform 1. The mounting mechanism 2 makes it more convenient to place, fix and move the rotor bearing. A test adjustment mechanism 3 for rotating and docking the vacuum pump rotor bearing is arranged on the side end of the mounting mechanism 2. The test adjustment mechanism 3 makes one of the rotor bearings rotate and the other rotor bearing rotates together after the two rotor bearings are attached together. When the two rotor bearings are engaged, if the docking position is incorrect, the rotor bearing is stuck, and the test adjustment device pushes the rotor bearing to move. After moving to a suitable position, the rotor bearing re-engages and rotates, so that the rotor bearings are repeatedly docked, making the assembly and docking of the rotor bearings more convenient. A fixing platform 101 is fixedly installed on the upper end of the mounting mechanism 2 near the mounting platform 1, and a vacuum pump housing 102 is fixedly placed on the upper end of the fixing platform 101.

[0034] See also Figure 1 The mounting mechanism 2 includes a mounting frame 201, and the mounting mechanism 2 is fixedly mounted on the upper end of the mounting platform 1. A slide rail 202 is fixedly mounted on the upper end of the mounting frame 201. A sliding block 203 is symmetrically slidably mounted on the upper end of the sliding rail 202. An electric telescopic rod 204 is fixedly mounted between the sliding block 203 and the mounting frame 201. The above-mentioned electric telescopic rod 204 is a prior art and will not be described in detail herein. By controlling the electric telescopic rod 204, the sliding blocks 203 are brought closer to each other, so that the rotor bearings are brought close to each other for docking and assembly, and a driving motor 205 is fixedly mounted on the upper end of the sliding block 203, and a winding drum 206 is fixedly mounted on the output end of the driving motor 205.

[0035] See also Figure 1 , Figure 2A pulling rope 207 is wound on the outer wall of the winding drum 206, and a mounting block 208 is fixedly installed on the lower end of the pulling rope 207. After the rotor bearing is moved and docked and assembled, when the docked rotor bearing needs to be placed in the vacuum pump housing 102, the drive motor 205 is started to make the winding drum 206 start to rotate and release the pulling rope 207 to stretch it, and the rotor bearing is placed in the vacuum pump housing 102. A sliding cylinder 209 is rotatably installed on the inner wall of the mounting block 208, and a sliding rod 210 is slidably installed on the inner wall of the sliding cylinder 209. In normal use, there is a certain gap between the set sliding rod 210 and the sliding cylinder 209, and a groove is provided on the outer wall of the sliding rod 210, and the sliding cylinder 209 is close to the sliding rod 210. A protrusion that fits with the groove is provided on the inner wall, so that the sliding cylinder 209 drives the sliding rod 210 to rotate during the rotation process, thereby preventing the sliding rod 210 from rotating in the sliding cylinder 209. A fixed cylinder 211 is fixedly installed on the end of the sliding rod 210 away from the sliding cylinder 209, and an extrusion cylinder 212 is rotatably installed on the upper end of the fixed cylinder 211, and the fixed cylinder 211 and the extrusion cylinder 212 are configured as matching semicircular arc plates, and anti-slip blocks 213 are fixedly installed on the inner walls of the extrusion cylinder 212 and the fixed cylinder 211. The anti-slip blocks 213 installed on the extrusion cylinder 212 and the fixed cylinder 211 enable the extrusion cylinder 212 and the fixed cylinder 211 to be rotated after placing both ends of the rotor bearing in the fixed cylinder 211, so that the extrusion cylinder 212 and the fixed cylinder 211 fix the rotor bearing.

[0036] See also Figures 1 to 3 A fixing rod 214 is fixedly installed on the side end of the mounting block 208, and a protective cover 215 is fixedly installed on the end of the fixing rod 214 away from the mounting block 208, and a buffer cylinder 216 is fixedly installed on the side end of the protective cover 215 close to the fixing rod 214, and a buffer plate 217 is slidably installed on the inner wall of the buffer cylinder 216, and a return spring 218 is arranged between the buffer cylinder 216 and the buffer plate 217. When the buffer plate 217 slides in the buffer cylinder 216 in a sealed manner, the gas in the buffer cylinder 216 is squeezed, and a buffer strip 219 is fixedly installed on the end of the buffer plate 217 away from the buffer cylinder 216. The buffer strip 219 prevents the buffer plate 217 from being damaged by direct collision, and an exhaust hole 220 is opened at the upper end of the buffer cylinder 216 away from the buffer plate 217. When the buffer plates 217 collide, the gas in the buffer plate 217 cannot pass through the exhaust hole 220 at one time, so that the air pressure in the sliding cylinder 209 increases and decreases slowly, which plays a buffering role.

[0037] See also Figures 4 to 6The test adjustment mechanism 3 includes a rotating motor 301, and the rotating motor 301 is fixedly mounted on the lower end of the mounting block 208, and there are two rotating motors 301, and the rotating motor 301 is mounted on the lower end of the mounting block 208 on one side of the mounting platform 1. The mounting blocks 208 without the rotating motor 301 are only equipped with a sliding cylinder 209 and a sliding rod 210, so that when it is necessary to adjust the rotor bearings at different positions, the corresponding rotating motor 301 can be started. An active ring 302 is fixedly mounted on the output end of the rotating motor 301, and a transmission belt 303 is wound on the outer wall of the active ring 302. A driven ring 304 is fixedly mounted on the end of the transmission belt 303 away from the active ring 302, and the driven ring 304 is rotatably sleeved on the outer wall of the sliding cylinder 209. When the rotor bearing needs to rotate, the rotating motor 301 is started, and the active ring 302 pulls the driven ring 304 through the transmission belt 303 to start rotating, so that the sliding cylinder 209 starts to rotate, thereby causing the rotor bearing to start rotating.

[0038] See also Figures 4 to 6 A connecting tube 305 is fixedly installed on the side end of the driven coil 304, and a mounting tube 306 is rotatably installed on the end of the connecting tube 305 away from the driven coil 304, and a threaded ring 307 is fixedly installed on the side end of the mounting tube 306. A threaded rod 308 is threadedly installed on the inner wall of the mounting tube 306, and the threaded rod 308 is fixedly installed on the end of the sliding rod 210 away from the fixed tube 211. When the sliding tube 209 does not rotate, the threaded ring 307 rotates, causing the threaded rod 308 to start moving, thereby pushing the rotor bearing to start moving, making it more convenient for the rotor bearing to automatically adjust.

[0039] See also Figures 5 to 8 A plurality of limiting grooves 309 are arranged in an array on the inner wall of the driven coil 304, a limiting block 310 is slidably installed on the inner wall of the limiting groove 309, and the end of the limiting block 310 away from the limiting groove 309 is set in a "V" shape, a stopper 311 is slidably installed on the inner wall of the limiting groove 309 away from the limiting block 310, a limiting spring 312 is fixedly installed between the stopper 311 and the limiting block 310, a rotating block 313 is fixedly installed on the outer wall of the sliding cylinder 209 close to the limiting block 310, and the rotating block 313 is fixedly installed on the outer wall of the sliding cylinder 209 close to the limiting block 310, and the rotating block 313 is fixedly installed on the outer wall of the sliding cylinder 209 close to the limiting block 310. 13 is set to the same "V" shape as the limit block 310. When the driven coil 304 drives the sliding cylinder 209 to start rotating, the force applied to the sliding cylinder 209 is the force of the limit block 310 pushing the rotating block 313. The thrust applied to the sliding cylinder 209 can be decomposed into two basic components, namely the force along the inclined plane and the force in the vertical direction. When the rotating block 313 rotates and the resistance increases, the limit block 310 is pushed more, so that the limit block 310 moves and squeezes the limit spring 312.

[0040] See also Figures 6 to 8A threaded telescopic rod 315 is rotatably installed on the side end of the threaded ring 307 close to the driven ring 304, and an adjusting ring 316 is fixedly sleeved on the screw barrel end of the threaded telescopic rod 315. The length of the threaded telescopic rod 315 is adjusted by rotating the adjusting ring 316. An adjusting block 314 is fixedly installed on the end of the threaded telescopic rod 315 away from the threaded ring 307, and the adjusting block 314 is slidably set on the inner wall of the driven ring 304. When the adjusting block 314 moves to push the stopper 311 to move, the stopper 311 and the limit block 310 squeeze the limit spring 312, thereby increasing the force required to push the limit block 310 to move, thereby making it more convenient to adjust the rotation force of the rotor bearing.

[0041] The working principle of the present invention is: when the rotor bearing needs to be docked and assembled, the driving motor 205 is started, the winding drum 206 rotates, the pulling rope 207 is extended, the fixing drum 211 is moved to the base mounting platform 1, the two rotor bearings are placed in the fixing drum 211, and the extrusion drum 212 is rotated so that the extrusion drum 212 and the fixing drum 211 fix the rotor bearings, thereby making the installation and placement of the rotor bearings more convenient;

[0042] After the rotor bearing is fixedly installed, the electric telescopic rod 204 is started, the electric telescopic rod 204 extends to push the sliding block 203 to move, the buffer plate 217 contacts, and the buffer plate 217 slides into the buffer cylinder 216, thereby playing a buffering role to prevent the rotor bearings from approaching each other too quickly and causing collision damage to the rotor bearings;

[0043] When the rotor bearings are squeezed and contacted, the corresponding rotating motor 301 is started, the active ring 302 causes the transmission belt 303 to start rotating, the driven ring 304 starts rotating, the limit block 310 set in the driven ring 304 pushes the rotating block 313 to rotate, the sliding cylinder 209 drives the rotor bearing to start rotating, and the rotating rotor bearing drives the other rotor bearing to rotate and engage in connection. When the rotor bearings are engaged and connected, if the engagement position is incorrect, the two rotor bearings are stuck, and the rotating block 313 set on the sliding cylinder 209 pushes the limit block 310 to contract, so that the driven ring 304 drives the threaded ring 307 to rotate through the connecting cylinder 305, so that the threaded rod 308 pushes the sliding rod 210 to move an end distance, so that the butted and engaged rotor bearings move, and re-engage after a distance, so that when the rotor bearings are assembled, the rotor bearings can automatically adjust the docking, so that the assembly speed of the rotor bearings is faster, no manual adjustment is required, and the assembly efficiency of the rotor bearings is higher.

[0044] 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 bearing assembly device, comprising a mounting platform (1), characterized in that: A mounting mechanism (2) for placing and fixing a vacuum pump rotor bearing is fixedly mounted on the upper end of the mounting platform (1); a testing and adjusting mechanism (3) for rotationally docking the vacuum pump rotor bearing is arranged on the side end of the mounting mechanism (2); a fixing platform (101) is fixedly mounted on the mounting platform (1) near the upper end of the mounting mechanism (2); a vacuum pump housing (102) is fixedly placed on the upper end of the fixing platform (101); The test adjustment mechanism (3) comprises a rotating motor (301), an active coil (302) being fixedly mounted on the output end of the rotating motor (301), a transmission belt (303) being wound around the outer wall of the active coil (302), and a driven coil (304) being fixedly mounted on one end of the transmission belt (303) away from the active coil (302); A connecting cylinder (305) is fixedly mounted on the side end of the driven coil (304); a mounting cylinder (306) is rotatably mounted on one end of the connecting cylinder (305) away from the driven coil (304); a threaded ring (307) is threadedly sleeved on the outer wall of the mounting cylinder (306); and a threaded rod (308) is threadedly mounted on the inner wall of the mounting cylinder (306) of the threaded ring (307); A plurality of limit grooves (309) are arranged in an array on the inner wall of the driven coil (304); a limit block (310) is slidably mounted on the inner wall of the limit groove (309); a stop block (311) is slidably mounted on the inner wall of the limit groove (309) away from the limit block (310); and a limit spring (312) is fixedly mounted between the stop block (311) and the limit block (310); A threaded telescopic rod (315) is rotatably mounted on the side end of the threaded ring (307) close to the driven ring (304), and an adjustment ring (316) is fixedly mounted on the screw barrel end of the threaded telescopic rod (315). An adjustment block (314) is fixedly mounted on one end of the threaded telescopic rod (315) away from the threaded ring (307), and the adjustment block (314) is slidably mounted on the inner wall of the driven ring (304).

2. A dry screw vacuum pump rotor bearing assembly device according to claim 1, characterized in that: The mounting mechanism (2) comprises a mounting frame (201), and the mounting mechanism (2) is fixedly mounted on the upper end of the mounting platform (1); a slide rail (202) is fixedly mounted on the upper end of the mounting frame (201); a sliding block (203) is symmetrically slidably mounted on the upper end of the sliding rail (202); an electric telescopic rod (204) is fixedly mounted between the sliding block (203) and the mounting frame (201); a driving motor (205) is fixedly mounted on the upper end of the sliding block (203); and a winding drum (206) is fixedly mounted on the output end of the driving motor (205).

3. A dry screw vacuum pump rotor bearing assembly device according to claim 2, characterized in that: A pulling rope (207) is wound and installed on the outer wall of the winding drum (206), a mounting block (208) is fixedly installed on the lower end of the pulling rope (207), a sliding cylinder (209) is rotatably installed on the inner wall of the mounting block (208), a sliding rod (210) is slidably installed on the inner wall of the sliding cylinder (209), a fixed cylinder (211) is fixedly installed on one end of the sliding rod (210) away from the sliding cylinder (209), and an extrusion cylinder (212) is rotatably installed on the upper end of the fixed cylinder (211).

4. A dry screw vacuum pump rotor bearing assembly device according to claim 3, characterized in that: A fixing rod (214) is fixedly mounted on the side end of the mounting block (208), and a protective cover (215) is fixedly mounted on one end of the fixing rod (214) away from the mounting block (208), a buffer cylinder (216) is fixedly mounted on the side end of the protective cover (215) close to the fixing rod (214), a buffer plate (217) is slidably mounted on the inner wall of the buffer cylinder (216), and an exhaust hole (220) is formed on the upper end of the buffer cylinder (216) away from the buffer plate (217).

5. A dry screw vacuum pump rotor bearing assembly device according to claim 3, characterized in that: The rotating motor (301) is fixedly mounted on the lower end of the mounting block (208), and the driven ring (304) is rotatably sleeved on the outer wall of the sliding cylinder (209).

6. A dry screw vacuum pump rotor bearing assembly device according to claim 5, characterized in that: A rotating block (313) is fixedly mounted on the outer wall of the sliding cylinder (209) close to the limiting block (310), and the threaded rod (308) is fixedly mounted on an end of the sliding rod (210) away from the fixed cylinder (211).

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