Particle jet polishing device for modifying shell for pump body

Abstract

The invention discloses a particle jetting and grinding device for shaping a shell for a pump body, and relates to the technical field of sand blasting, the particle jetting and grinding device comprises a frame, a grinding cabinet, a feeding mechanism, a sand blasting mechanism, a storage tank, a bucket elevator and an air compressor, the grinding cabinet is fixedly connected with the frame, the feeding mechanism is fixedly connected with the grinding cabinet, and the sand blasting mechanism is fixedly connected with the storage tank. The sand blasting mechanism is in fastening connection with the grinding cabinet, the storage tank is in fastening connection with the bucket elevator, the storage tank is communicated with the discharging end of the bucket elevator, the bucket elevator is communicated with an outlet in the bottom of the grinding cabinet, the bucket elevator is used for recycling used particles into the storage tank, and the sand blasting mechanism is communicated with the storage tank and the air compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of sandblasting, and specifically to a particle jet grinding device for repairing the shape of the outer shell of a pump body. Background Art

[0002] The sandblasting process is to spray particles onto the surface of a workpiece through compressed air to polish the surface of the workpiece. The particles continuously impact the surface of the workpiece driven by the compressed air to achieve the purposes of cleaning, improving the surface quality, increasing the roughness, etc., thereby improving the adhesion and anti-corrosion ability of the workpiece surface; while the outer shell of the pump body is generally formed by metal casting, and impurities such as sand grains, scale, and stains may adhere to the surface of the casting. Sandblasting can effectively clean the surface of the casting and remove these impurities, making it have better surface quality.

[0003] However, the existing sandblasting methods often involve manually holding a sandblasting head to process the workpiece, with low accuracy; in addition, the roughness of the surface of the casting is often inconsistent. The distance between the existing sandblasting equipment and the workpiece is fixed, so the impact force of the particles on the workpiece remains the same, resulting in areas with large roughness not being able to reach the required surface quality, and the surface quality of each area of the processed workpiece surface being inconsistent. Summary of the Invention

[0004] The purpose of the present invention is to provide a particle jet grinding device for repairing the shape of the outer shell of a pump body to solve the problems raised in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: The particle jet grinding device includes a frame, a grinding cabinet, a feeding mechanism, a sandblasting mechanism, a storage tank, a bucket elevator, and an air compressor. The grinding cabinet is fixedly connected to the frame, the feeding mechanism is fixedly connected to the grinding cabinet, the sandblasting mechanism is fixedly connected to the grinding cabinet, the storage tank is fixedly connected to the bucket elevator, the storage tank is communicated with the discharge end of the bucket elevator, the bucket elevator is communicated with the bottom outlet of the grinding cabinet, and the bucket elevator is used to recycle the used particles into the storage tank. The sandblasting mechanism is respectively communicated with the storage tank and the air compressor.

[0006] The workpiece to be ground in this application is a cylindrical outer shell of a pump body, and mainly sandblasts the outer surface of the pump body shell. The frame is used to provide stable support for each mechanism. The feeding mechanism transports the workpiece to be processed into the grinding cabinet for sandblasting and grinding. The raw materials required for sandblasting are added to the storage tank. The sandblasting mechanism uses the compressed air generated by the air compressor as power. The storage tank and the sandblasting mechanism are connected by a pipeline. Under the action of the compressed air, the particles in the storage tank will be sprayed onto the surface of the workpiece in the grinding cabinet to polish the surface of the workpiece; during the grinding process, the particles continuously falling to the bottom of the grinding cabinet will be re-transported to the storage tank by the bucket elevator, realizing the self-circulation of the grinding particles.

[0007] Furthermore, the sandblasting mechanism includes a moving component, a spraying component, and a detection component. The moving component is fixedly connected to the grinding cabinet. The spraying component is fixedly connected to the moving component. The output end of the spraying component faces the workpiece. The detection component is fixedly connected to the moving component and is electrically connected to the spraying component. The detection component is used to detect the surface roughness of the workpiece.

[0008] The moving component is fixed on the side of the grinding cabinet and is used to drive the spraying component to move up and down. The workpiece in the grinding cabinet can be driven by the feeding mechanism to rotate within the grinding cabinet around a fixed axis. In this way, driven by the moving component, the spraying component can perform grinding treatment on the surface of the workpiece conveyed into the grinding cabinet. Since the surface roughness of the workpiece is different and the distance between the spraying component and the workpiece is fixed, the grinding effect at the positions with large surface roughness of the workpiece will be poor. By measuring the surface roughness of different regions of the workpiece through the detection component and using this to control the distance between the output end of the spraying component and the workpiece, the output end of the spraying component is closer to the workpiece in the regions with large roughness, so as to increase the impact force on the workpiece, thereby ensuring that the grinding effects of all regions on the workpiece surface are consistent.

[0009] Furthermore, the moving component includes a fixed seat, a driving motor, a lead screw, and a transmission block. The fixed seat is fixedly connected to the grinding cabinet. A guide groove is provided on the fixed seat. The driving motor is fixedly connected to the fixed seat. The output end of the driving motor is in transmission connection with the lead screw. The lead screw is rotatably connected to the fixed seat. The transmission block is in transmission connection with the lead screw and is slidably connected to the guide groove. The transmission block is used to drive the spraying component to move up and down.

[0010] The driving motor is the main power source of the moving component. The driving motor outputs power to drive the lead screw to rotate on the fixed seat, thereby driving the transmission block to move up and down in the guide groove, and then driving the spraying component to move up and down.

[0011] Furthermore, the spraying component includes a moving seat, a mixing chamber, an electric push rod, a movable plate, a corrugated pipe, and a nozzle. The moving seat is fixedly connected to the transmission block. A sliding groove is provided on the grinding cabinet. The moving seat is slidably connected to the sliding groove. The moving seat is provided with a particle inlet and an air inlet. The particle inlet is communicated with the outlet of the storage tank. The air inlet is communicated with the air compressor. The mixing chamber is fixedly connected to the moving seat and is communicated with the particle inlet and the air inlet. The electric push rod is fixedly connected to the moving seat. The output end of the electric push rod is fixedly connected to the movable plate. The corrugated pipe is communicated with the outlet of the mixing chamber. The nozzle is communicated with the corrugated pipe. An adjusting component is provided on one side of the nozzle. The adjusting component is electrically connected to the detection component and is used to adjust the distance between the nozzle and the workpiece.

[0012] The moving seat is used to connect the transmission block, thereby driving the spraying assembly to slide up and down along the chute on the grinding cabinet. The particle inlet is used to communicate with the storage tank, and the air inlet is used to communicate with the air compressor. Under the action of the compressed air provided by the air compressor, the particles in the storage tank are introduced into the mixing chamber, flow through the corrugated pipe under the push of gas power, and finally are sprayed onto the surface of the workpiece from the nozzle to perform grinding treatment on it. The corrugated pipe has a certain elasticity. The electric push rod is used to drive the nozzle close to the workpiece so that the distance between the nozzle and the workpiece is within a suitable range. During the grinding process, the adjustment assembly can control the relative distance between the nozzle and the workpiece according to the surface roughness of the workpiece measured by the detection assembly. When the surface roughness of the workpiece is large, the distance between the nozzle and the workpiece is shortened to increase the impact force on the surface of the workpiece and improve the grinding effect on the rough surface.

[0013] Further, the detection assembly includes an arc-shaped bracket, a moving push rod, a detection block, an arc-shaped magnetic column and a connecting rod. The arc-shaped bracket is fixedly connected to the moving seat, and the center of the arc-shaped bracket coincides with the center of the workpiece. The moving push rod is fixedly connected to the arc-shaped bracket, and the output end of the moving push rod is fixedly connected to the detection block. An arc-shaped groove is provided in the detection block, and the arc-shaped magnetic column is slidably connected to the arc-shaped groove. The connecting rod is fixedly connected to the arc-shaped magnetic column. A friction surface is provided at one end of the connecting rod facing the workpiece, and the friction surface is arc-shaped. A coil is wound around one end of the arc-shaped groove away from the arc-shaped magnetic column. The coil is externally connected to a detection power supply to form a control circuit, and the control circuit is electrically connected to the adjustment assembly. A return spring is provided on the connecting rod.

[0014] Since the workpiece is rotated by the feeding mechanism in the grinding cabinet with a fixed axis, the arc-shaped bracket whose center coincides with the center of the workpiece can fit the detection end of the detection assembly to the surface of the workpiece, thereby improving the accuracy during detection; the moving push rod acts to fit the friction surface on the connecting rod to the surface of the workpiece with a certain pressure. When the workpiece rotates in the grinding cabinet, it will drive the connecting rod to deflect in the rotation direction of the workpiece under the action of friction, and the return spring is compressed by the force, thereby driving the arc-shaped magnetic column to deflect along the arc-shaped groove towards the coil side. The coil makes a cutting magnetic induction line movement, thereby generating an induced current. The control circuit can detect the magnitude of this induced current; moreover, the rougher the surface of the workpiece, the greater the acting force on the friction surface, the longer the distance that the arc-shaped magnetic column inserts into the coil, and the greater the generated induced current, that is, the rougher the surface of the workpiece, the greater the induced current generated by the coil detected by the control circuit.

[0015] Further, the adjusting assembly includes a sleeve, a piston rod, an electromagnet and a repelling magnet. A guiding ring is provided on the movable plate, and an annular groove is provided on the spray head. The guiding ring is slidably connected to the annular groove. The sleeve is fixedly connected to the movable plate. The piston rod is slidably connected to the inner cavity of the sleeve. The output end of the piston rod is fixedly connected to the spray head. The electromagnet is fixedly connected to the sleeve and electrically connected to the control circuit. The repelling magnet is fixedly connected to the piston rod and arranged opposite to the electromagnet. The opposite ends of the repelling magnet and the electromagnet are like magnetic poles. An adjusting spring is sleeved on the piston rod.

[0016] Because the greater the surface roughness of the workpiece, the greater the large induction current measured by the control circuit, the greater the current transmitted to the electromagnet, and the greater the magnetic force of the electromagnet. Under the action of the magnetic force, the greater the repulsive force of the repelling magnet by the electromagnet, the piston rod overcomes the elastic force of the adjusting spring and slides outward along the inner cavity of the sleeve, thereby driving the spray head to move toward the workpiece along the guiding ring, making the spray head close to the surface of the workpiece, so as to increase the impact force of the particles on the surface of the workpiece, thereby improving the grinding effect on the surface with large roughness and making the grinding effects in the areas with different surface roughnesses of the workpiece consistent, and further improving the grinding quality; that is, the distance between the spray head and the workpiece is automatically controlled according to the surface roughness of the workpiece.

[0017] Further, the feeding mechanism includes a guide rail, a moving module, a fixed shaft, a rotating shaft and a rotating motor. The guide rail is fixedly connected to the frame. The moving module is slidably connected to the guide rail. The fixed shaft is fixedly connected to the moving module. A transmission gear is provided at one end of the rotating shaft close to the fixed shaft, and the transmission gear is rotatably connected to the fixed shaft. The rotating motor is fixedly connected to the grinding cabinet, and the output end of the rotating motor is drivingly connected to the transmission gear. A number of fixing brackets are arranged on the rotating shaft.

[0018] The guide rail is fixed on the frame to provide guidance for the moving module. The moving module can slide freely along the guide rail. The workpiece to be ground can be fixed on the fixing brackets on the rotating shaft and then automatically enter the grinding cabinet under the drive of the moving module, that is, the automatic feeding of the workpiece is realized. Driven by the rotating motor and the transmission gear, the rotating shaft can rotate relative to the fixed shaft, thereby driving the workpiece on the fixing brackets to rotate, so as to facilitate grinding the entire surface of the workpiece.

[0019] Further, a dust collection system is provided on one side of the grinding cabinet. The dust collection system is communicated with the grinding cabinet and is used for collecting dust during the grinding process.

[0020] A large amount of dust will be generated during the sandblasting operation. In order to prevent the dust from diffusing into the working environment and affecting the health of the staff, the dust generated in the grinding cabinet is collected through the dust collection system.

[0021] Compared with the prior art, the beneficial effects of the present invention are: 1. When the workpiece rotates in the grinding cabinet, the connecting rod will be driven to deflect in the rotation direction of the workpiece under the action of friction force. The return spring is compressed by the force, thereby driving the arc-shaped magnetic column to deflect along the arc-shaped groove towards the coil side. The coil makes a cutting magnetic induction line movement, thus generating an induced current. The control circuit can detect the magnitude of this induced current. Moreover, the rougher the surface of the workpiece, the greater the acting force on the friction surface, the longer the distance that the arc-shaped magnetic column inserts into the coil, and the greater the generated induced current. That is, the rougher the surface of the workpiece, the greater the induced current generated by the coil detected by the control circuit. Through the mutual cooperation of the arc-shaped friction surface and the arc-shaped magnetic column, and by using the different friction forces of surfaces with different roughnesses on the friction surface, the roughness of different regions on the surface of the workpiece can be automatically judged.

[0022] 2. By automatically adjusting the magnetic force of the electromagnet according to the roughness of the workpiece surface to adjust the moving distance of the piston rod, the nozzle is closer to the surface of the workpiece in the area with a larger surface roughness of the workpiece, thereby improving the grinding effect on the surface with a large roughness, making the grinding effects of different regions on the surface of the workpiece with different roughnesses consistent, and further improving the grinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a partial cross-sectional view of the present invention; Figure 3 is Figure 2 a partial enlarged view of part A of Figure 4 is a partial view of the grinding cabinet of the present invention; Figure 5 is a schematic diagram of the sandblasting mechanism of the present invention; Figure 6 is Figure 5 a partial enlarged view of part C of Figure 7 is Figure 5 a partial enlarged view of part D of Figure 8 is a schematic diagram of the adjusting assembly.

[0024] In the figure: 1 - frame, 2 - grinding cabinet, 21 - chute, 3 - loading mechanism, 31 - guide rail, 32 - moving module, 33 - fixed shaft, 34 - rotating shaft, 341 - transmission gear, 342 - fixed bracket, 35 - rotating motor, 4 - sandblasting mechanism, 41 - moving component, 411 - fixed seat, 4111 - guide groove, 412 - driving motor, 413 - lead screw, 414 - transmission block, 42 - spraying component, 421 - moving seat, 4211 - particle inlet, 4212 - air inlet, 422 - mixing chamber, 423 - electric push rod, 424 - movable plate, 4241 - guide ring, 425 - bellows, 426 - nozzle, 4261 - annular groove, 43 - detection component, 431 - arc bracket, 432 - moving push rod, 433 - detection block, 4331 - arc groove, 434 - arc magnetic column, 435 - connecting rod, 4351 - friction surface, 436 - coil, 437 - return spring, 44 - adjustment component, 441 - sleeve, 442 - piston rod, 443 - electromagnet, 444 - repelling magnet, 445 - adjustment spring, 5 - storage tank, 6 - bucket elevator, 7 - air compressor, 8 - dust collection system. Specific embodiments

[0025] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0026] Embodiment: As Figures 1-8 shown, the present invention provides a technical solution for a particle spraying and grinding device for modifying the outer shell of a pump body. The particle spraying and grinding device includes a frame 1, a grinding cabinet 2, a loading mechanism 3, a sandblasting mechanism 4, a storage tank 5, a bucket elevator 6 and an air compressor 7. The grinding cabinet 2 is fixedly connected to the frame 1, the loading mechanism 3 is fixedly connected to the grinding cabinet 2, the sandblasting mechanism 4 is fixedly connected to the grinding cabinet 2, the storage tank 5 is fixedly connected to the bucket elevator 6, the storage tank 5 is communicated with the discharge end of the bucket elevator 6, the bucket elevator 6 is communicated with the bottom outlet of the grinding cabinet 2, the bucket elevator 6 is used to recover the used particles into the storage tank 5, and the sandblasting mechanism 4 is respectively communicated with the storage tank 5 and the air compressor 7.

[0027] The workpiece polished in this application is a cylindrical pump body housing, and sandblasting treatment is mainly carried out on the outer surface of the pump body housing. The frame 1 is used to provide stable support for each mechanism. The feeding mechanism 3 conveys the workpiece to be processed into the grinding cabinet 2 for sandblasting and polishing treatment. The raw materials required for sandblasting are added into the storage tank 5. The sandblasting mechanism 4 uses the compressed air generated by the air compressor 7 as power. The storage tank 5 is connected to the sandblasting mechanism 4 through a pipeline. Under the action of the compressed air, the fine particles in the storage tank 5 will be sprayed onto the surface of the workpiece in the grinding cabinet 2 to polish the surface of the workpiece; during the grinding process, the fine particles continuously falling to the bottom of the grinding cabinet 2 will be re-conveyed into the storage tank 5 by the bucket elevator 6, realizing the self-circulation of the grinding fine particles.

[0028] The sandblasting mechanism 4 includes a moving component 41, a spraying component 42 and a detection component 43. The moving component 41 is fixedly connected to the grinding cabinet 2, the spraying component 42 is fixedly connected to the moving component 41, the output end of the spraying component 42 faces the workpiece, the detection component 43 is fixedly connected to the moving component 41, the detection component 43 is electrically connected to the spraying component 42, and the detection component 43 is used to detect the surface roughness of the workpiece.

[0029] The moving component 41 is fixed on the side of the grinding cabinet 2 and is used to drive the spraying component 42 to move up and down. The workpiece in the grinding cabinet 2 can be driven by the feeding mechanism 3 to rotate around a fixed axis in the grinding cabinet 2. In this way, driven by the moving component 41, the spraying component 42 can polish the surface of the workpiece conveyed into the grinding cabinet 2; due to the different surface roughnesses of the workpiece, and the distance between the spraying component 42 and the workpiece is fixed, it will cause poor grinding effect at the positions with large surface roughness of the workpiece. The roughness of different areas on the surface of the workpiece is measured by the detection component 43, and based on this, the distance between the output end of the spraying component 42 and the workpiece is controlled. The output end of the spraying component 42 is closer to the workpiece in the area with larger roughness, so as to increase the impact force on the workpiece, thereby ensuring that the grinding effects of all areas on the surface of the workpiece are consistent.

[0030] The moving component 41 includes a fixed seat 411, a driving motor 412, a lead screw 413 and a transmission block 414. The fixed seat 411 is fixedly connected to the grinding cabinet 2. A guide groove 4111 is provided on the fixed seat 411. The driving motor 412 is fixedly connected to the fixed seat 411. The output end of the driving motor 412 is in transmission connection with the lead screw 413. The lead screw 413 is rotatably connected to the fixed seat 411. The transmission block 414 is in transmission connection with the lead screw 413. The transmission block 414 is slidably connected to the guide groove 4111. The transmission block 414 is used to drive the spraying component 42 to move up and down.

[0031] The driving motor 412 is the main power source of the moving component 41. The driving motor 412 outputs power to drive the lead screw 413 to rotate on the fixed seat 411, thereby driving the transmission block 414 to move up and down in the guide groove 4111, and then driving the spraying component 42 to move up and down.

[0032] The spraying component 42 includes a moving seat 421, a mixing chamber 422, an electric push rod 423, a movable plate 424, a corrugated pipe 425, and a nozzle 426. The moving seat 421 is fixedly connected to the transmission block 414. There is a sliding groove 21 on the grinding cabinet 2, and the moving seat 421 is slidably connected to the sliding groove 21. The moving seat 421 is provided with a particle inlet 4211 and an air inlet 4212. The particle inlet 4211 is communicated with the outlet of the storage tank 5, and the air inlet 4212 is communicated with the air compressor 7. The mixing chamber 422 is fixedly connected to the moving seat 421, and the mixing chamber 422 is communicated with the particle inlet 4211 and the air inlet 4212. The electric push rod 423 is fixedly connected to the moving seat 421, and the output end of the electric push rod 423 is fixedly connected to the movable plate 424. The corrugated pipe 425 is communicated with the outlet of the mixing chamber 422, and the nozzle 426 is communicated with the corrugated pipe 425. One side of the nozzle 426 is provided with an adjusting component 44, and the adjusting component 44 is electrically connected to the detecting component 43. The adjusting component 44 is used to adjust the distance between the nozzle 426 and the workpiece.

[0033] The moving seat 421 is used to connect the transmission block 414, thereby driving the spraying component 42 to slide up and down along the sliding groove 21 on the grinding cabinet 2. The particle inlet 4211 is used to communicate with the storage tank 5, and the air inlet 4212 is used to communicate with the air compressor 7. Under the action of the compressed air provided by the air compressor 7, the particles in the storage tank 5 are introduced into the mixing chamber 422, flow through the corrugated pipe 425 under the push of gas power, and finally are sprayed from the nozzle 426 onto the surface of the workpiece for grinding treatment. The corrugated pipe 425 has a certain elasticity. The electric push rod 423 is used to drive the nozzle 426 close to the workpiece so that the distance between the nozzle 426 and the workpiece is within a suitable range. During the grinding process, the adjusting component 44 can control the relative distance between the nozzle 426 and the workpiece according to the surface roughness of the workpiece measured by the detecting component 43. When the surface roughness of the workpiece is large, the distance between the nozzle 426 and the workpiece is shortened, so as to increase the impact force on the surface of the workpiece and improve the grinding effect on the rough surface.

[0034] The detection component 43 includes an arc-shaped bracket 431, a moving push rod 432, a detection block 433, an arc-shaped magnetic column 434 and a connecting rod 435. The arc-shaped bracket 431 is fixedly connected to the moving seat 421. The center of the arc-shaped bracket 431 coincides with the center of the workpiece. The moving push rod 432 is fixedly connected to the arc-shaped bracket 431. The output end of the moving push rod 432 is fixedly connected to the detection block 433. An arc-shaped groove 4331 is provided in the detection block 433. The arc-shaped magnetic column 434 is slidably connected to the arc-shaped groove 4331. The connecting rod 435 is fixedly connected to the arc-shaped magnetic column 434. A friction surface 4351 is provided at one end of the connecting rod 435 facing the workpiece. The friction surface 4351 is arc-shaped. A coil 436 is wound around one end of the arc-shaped groove 4331 away from the arc-shaped magnetic column 434. The coil 436 is externally connected to a detection power supply to form a control circuit. The control circuit is electrically connected to the adjustment component 44. A return spring 437 is provided on the connecting rod 435.

[0035] Since the workpiece is rotated by the feeding mechanism 3 in the grinding cabinet 2 around a fixed axis, the arc-shaped bracket whose center coincides with the center of the workpiece can fit the detection end of the detection component 43 to the surface of the workpiece, thereby improving the accuracy during detection; when the moving push rod 432 acts, the friction surface 4351 on the connecting rod 435 is pressed against the surface of the workpiece with a certain pressure. When the workpiece rotates in the grinding cabinet 2, under the action of friction, it will drive the connecting rod 435 to deflect in the rotation direction of the workpiece, and the return spring 437 is compressed by the force, thereby driving the arc-shaped magnetic column 434 to deflect along the arc-shaped groove 4331 towards the coil 436 side. The coil 436 makes a cutting magnetic induction line movement, thereby generating an induced current. The control circuit can detect the magnitude of this induced current; moreover, the rougher the surface of the workpiece, the greater the acting force on the friction surface 4351, the longer the distance that the arc-shaped magnetic column 434 inserts into the coil 436, and the greater the generated induced current, that is, the rougher the surface of the workpiece, the greater the induced current generated by the coil 436 detected by the control circuit.

[0036] The adjustment component 44 includes a sleeve 441, a piston rod 442, an electromagnet 443 and a repelling magnet 444. A guide ring 4241 is provided on the movable plate 424. An annular groove 4261 is provided on the nozzle 426. The guide ring 4241 is slidably connected to the annular groove 4261. The sleeve 441 is fixedly connected to the movable plate 424. The piston rod 442 is slidably connected to the inner cavity of the sleeve 441. The output end of the piston rod 442 is fixedly connected to the nozzle 426. The electromagnet 443 is fixedly connected to the sleeve 441. The electromagnet 443 is electrically connected to the control circuit. The repelling magnet 444 is fixedly connected to the piston rod 442. The repelling magnet 444 and the electromagnet 443 are arranged opposite to each other. The opposite ends of the repelling magnet 444 and the electromagnet 443 are like-named magnetic poles. An adjustment spring 445 is sleeved on the piston rod 442.

[0037] Because the greater the surface roughness of the workpiece, the greater the large induction current measured by the control circuit, the greater the current transmitted to the electromagnet 443, and the greater the magnetic force of the electromagnet 443. Under the action of the magnetic force, the greater the repulsive force of the repelling magnet 444 by the electromagnet 443, the piston rod 442 overcomes the elastic force of the adjusting spring 445 and slides outward along the inner cavity of the sleeve 441, thereby driving the nozzle 426 to move towards the workpiece along the guide ring 4241, making the nozzle 426 close to the surface of the workpiece, so as to increase the impact force of the particles on the surface of the workpiece, thereby improving the grinding effect on the surface with large roughness, making the grinding effects in areas with different surface roughnesses of the workpiece consistent, and further improving the grinding quality; that is, it realizes the automatic control of the distance between the nozzle 426 and the workpiece according to the surface roughness of the workpiece.

[0038] The loading mechanism 3 includes a guide rail 31, a moving module 32, a fixed shaft 33, a rotating shaft 34 and a rotating motor 35. The guide rail 31 is fixedly connected to the frame 1, the moving module 32 is slidably connected to the guide rail 31, the fixed shaft 33 is fixedly connected to the moving module 32, a transmission gear 341 is provided at one end of the rotating shaft 34 close to the fixed shaft 33, the transmission gear 341 is rotatably connected to the fixed shaft 33, the rotating motor 35 is fixedly connected to the grinding cabinet 2, and the output end of the rotating motor 35 is drivingly connected to the transmission gear 341. A plurality of fixing brackets 342 are arranged on the rotating shaft 34.

[0039] The guide rail 31 is fixed on the frame 1 to provide guidance for the moving module 32. The moving module 32 can slide freely along the guide rail 31. The workpiece to be ground can be fixed on the fixing bracket 342 on the rotating shaft 34, and then automatically enter the grinding cabinet 2 under the drive of the moving module 32, that is, the automatic loading of the workpiece is realized. Driven by the rotating motor 35 and the transmission gear 341, the rotating shaft 34 can rotate relative to the fixed shaft 33, thereby driving the workpiece on the fixing bracket 342 to rotate, so as to facilitate grinding the entire surface of the workpiece.

[0040] A dust collection system 8 is provided on one side of the grinding cabinet 2. The dust collection system 8 is communicated with the grinding cabinet 2, and the dust collection system 8 is used to collect the dust generated during the grinding process.

[0041] A large amount of dust will be generated during the sandblasting operation. In order to prevent the dust from diffusing into the working environment and affecting the health of the staff, the dust generated in the grinding cabinet 2 is collected by the dust collection system 8.

[0042] Working principle of the present invention: The workpiece in the grinding cabinet 2 can be driven by the feeding mechanism 3 to rotate in the grinding cabinet 2 around a fixed axis. In this way, driven by the moving component 41, the spraying component 42 can perform grinding treatment on the surface of the workpiece conveyed into the grinding cabinet 2. Under the action of the compressed air provided by the air compressor 7, the fine particles in the storage tank 5 are introduced into the mixing chamber 422, flow through the corrugated pipe 425 under the push of gas power, and finally are sprayed onto the surface of the workpiece from the nozzle 426 to perform grinding treatment on it; when the workpiece rotates in the grinding cabinet 2, it will drive the connecting rod 435 to deflect in the rotating direction of the workpiece under the action of friction force, and the return spring 437 is compressed by force, thereby driving the arc-shaped magnetic column 434 to deflect along the arc-shaped groove 4331 towards the coil 436 side. The coil 436 makes a cutting magnetic induction line movement, thereby generating an induced current. The control circuit can detect the magnitude of this induced current; moreover, the rougher the surface of the workpiece, the greater the acting force on the friction surface 4351, the longer the distance that the arc-shaped magnetic column 434 inserts into the coil 436, and the greater the induced current generated, that is, the rougher the surface of the workpiece, the greater the induced current detected by the control circuit in the coil 436; the greater the current transmitted to the electromagnet 443, the greater the magnetic force of the electromagnet 443. Under the action of the magnetic force, the repulsive magnet 444 receives a greater repulsive force from the electromagnet 443, and the piston rod 442 overcomes the elastic force of the adjusting spring 445 and slides outward along the inner cavity of the sleeve 441, thereby driving the nozzle 426 to move towards the workpiece along the guide ring 4241, so that the nozzle 426 approaches the surface of the workpiece, thereby increasing the impact force of the fine particles on the surface of the workpiece, so as to improve the grinding effect on the surface with large roughness and make the grinding effects of different regions on the surface of the workpiece with different roughnesses consistent.

[0043] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A particle jetting and polishing device for pump housing shaping, characterized in that: The particle jetting and polishing device comprises a frame (1), a polishing cabinet (2), a feeding mechanism (3), a sandblasting mechanism (4), a storage tank (5), a bucket elevator (6) and an air compressor (7); the polishing cabinet (2) is tightly connected to the frame (1); the feeding mechanism (3) is tightly connected to the polishing cabinet (2); the sandblasting mechanism (4) is tightly connected to the polishing cabinet (2); the storage tank (5) is tightly connected to the bucket elevator (6); the storage tank (5) is connected to the discharge end of the bucket elevator (6); the bucket elevator (6) is connected to the bottom outlet of the polishing cabinet (2); the bucket elevator (6) is used to recycle used particles into the storage tank (5); and the sandblasting mechanism (4) is connected to the storage tank (5) and the air compressor (7) respectively.

2. A microparticle jetting and polishing device for pump casing shaping according to claim 1, characterized in that: The sandblasting mechanism (4) comprises a moving component (41), a spraying component (42) and a detection component (43); the moving component (41) is tightly connected to the sanding cabinet (2); the spraying component (42) is tightly connected to the moving component (41); an output end of the spraying component (42) faces the workpiece; the detection component (43) is tightly connected to the moving component (41); the detection component (43) is electrically connected to the spraying component (42); and the detection component (43) is used to detect the roughness of the surface of the workpiece.

3. A microparticle jetting and polishing device for pump casing shaping according to claim 2, characterized in that: The moving assembly (41) comprises a fixed seat (411), a driving motor (412), a screw rod (413) and a transmission block (414); the fixed seat (411) is tightly connected to the polishing cabinet (2); a guide groove (4111) is provided on the fixed seat (411); the driving motor (412) is tightly connected to the fixed seat (411); the output end of the driving motor (412) is transmission-connected to the screw rod (413); the screw rod (413) is rotationally connected to the fixed seat (411); the transmission block (414) is transmission-connected to the screw rod (413); the transmission block (414) is slidably connected to the guide groove (4111); and the transmission block (414) is used to drive the injection assembly (42) to move up and down.

4. A microparticle jetting and polishing device for pump casing shaping according to claim 3, characterized in that: The injection assembly (42) comprises a movable seat (421), a mixing chamber (422), an electric push rod (423), a movable plate (424), a bellows (425) and a nozzle (426); the movable seat (421) is tightly connected to the transmission block (414); a slide groove (21) is provided on the polishing cabinet (2); the movable seat (421) is slidably connected to the slide groove (21); a particle inlet (4211) and an air inlet (4212) are provided on the movable seat (421); the particle inlet (4211) is connected to the outlet of the storage tank (5); the air inlet (4212) is connected to the air compressor (7); the mixing chamber (42 2) is tightly connected to the movable seat (421), the mixing chamber (422) is connected to the particle inlet (4211) and the air inlet (4212), the electric push rod (423) is tightly connected to the movable seat (421), the output end of the electric push rod (423) is tightly connected to the movable plate (424), the bellows (425) is connected to the outlet of the mixing chamber (422), the nozzle (426) is connected to the bellows (425), an adjustment component (44) is provided on one side of the nozzle (426), the adjustment component (44) is electrically connected to the detection component (43), and the adjustment component (44) is used to adjust the distance between the nozzle (426) and the workpiece.

5. A microparticle jetting polishing device for pump casing shaping according to claim 4, characterized in that: The detection assembly (43) comprises an arc-shaped bracket (431), a movable push rod (432), a detection block (433), an arc-shaped magnetic column (434) and a connecting rod (435); the arc-shaped bracket (431) is tightly connected to the movable seat (421); the center of the arc-shaped bracket (431) coincides with the center of the workpiece; the movable push rod (432) is tightly connected to the arc-shaped bracket (431); the output end of the movable push rod (432) is tightly connected to the detection block (433); an arc-shaped groove (4331) is provided in the detection block (433); the arc-shaped magnetic column (434) is slidably connected to the arc-shaped groove (4331), the connecting rod (435) is tightly connected to the arc-shaped magnetic column (434), a friction surface (4351) is provided on one end of the connecting rod (435) facing the workpiece, and the friction surface (4351) is arc-shaped, and a coil (436) is wound around one end of the arc-shaped groove (4331) away from the arc-shaped magnetic column (434), and the coil (436) is externally connected to a detection power supply to form a control circuit, and the control circuit is electrically connected to the adjustment component (44), and a reset spring (437) is provided on the connecting rod (435).

6. A microparticle jetting and polishing device for pump casing shaping according to claim 5, characterized in that: The regulating assembly (44) comprises a sleeve (441), a piston rod (442), an electromagnet (443) and a repelling magnet (444); a guide ring (4241) is provided on the movable plate (424); an annular groove (4261) is provided on the nozzle (426); the guide ring (4241) is slidably connected to the annular groove (4261); the sleeve (441) is tightly connected to the movable plate (424); the piston rod (442) is slidably connected to the inner cavity of the sleeve (441); The output end of the piston rod (442) is tightly connected to the nozzle (426), the electromagnet (443) is tightly connected to the sleeve (441), the electromagnet (443) is electrically connected to the control circuit, the repelling magnet (444) is tightly connected to the piston rod (442), the repelling magnet (444) and the electromagnet (443) are arranged opposite to each other, the opposite ends of the repelling magnet (444) and the electromagnet (443) are the same magnetic poles, and the piston rod (442) is sleeved with an adjustment spring (445).

7. The microparticle jet polishing device for pump casing shaping according to claim 1, characterized in that: The feeding mechanism (3) comprises a guide rail (31), a movable module (32), a fixed shaft (33), a rotating shaft (34) and a rotating motor (35); the guide rail (31) is fixedly connected to the frame (1); the movable module (32) is slidably connected to the guide rail (31); the fixed shaft (33) is fixedly connected to the movable module (32); a transmission gear (341) is provided at one end of the rotating shaft (34) close to the fixed shaft (33); the transmission gear (341) is rotationally connected to the fixed shaft (33); the rotating motor (35) is fixedly connected to the polishing cabinet (2); the output end of the rotating motor (35) is transmission-connected to the transmission gear (341); and a plurality of fixed frames (342) are arranged on the rotating shaft (34).

8. The microparticle jetting polishing device for pump casing shaping according to claim 1, characterized in that: A dust collection system (8) is provided on one side of the polishing cabinet (2); the dust collection system (8) is in communication with the polishing cabinet (2); and the dust collection system (8) is used to collect dust generated during the polishing process.

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