Reinforced shot blasting machine for surface of metal pipe fitting

Abstract

The invention relates to the technical field of pipe fitting shot blasting machining, in particular to a reinforced shot blasting machine for the surface of a metal pipe fitting, which comprises an operation box, a box door is arranged outside the operation box, two symmetrically arranged side plates are fixedly mounted in the middle of an inner cavity of the operation box, and sorting boxes which are distributed left and right are jointly mounted between the side plates on the two sides; according to the shot blasting device, when the pipe fitting rotates, the outer portion of the pipe fitting sequentially faces the shot blasting head, and therefore the shot blasting head can evenly act on the outer wall of the pipe fitting when the shot blasting head starts shot blasting, compared with an existing device, when shot blasting is conducted on the outer portion of the pipe fitting, the outer wall of the pipe fitting can be evenly subjected to shot blasting operation through rotation of the pipe fitting, and the shot blasting efficiency is improved. Steel shots thrown by the shot blasting head and metal impurities shot down on the outer wall of a steel pipe can be subjected to magnetic separation treatment through arrangement of the sorting unit, and the used steel shots can be washed through arrangement of the cleaning unit, so that iron oxide impurities and the like which cannot be adsorbed during magnetic separation are removed, and the used steel shots can be recycled after being cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of shot blasting processing for pipe fittings, and specifically to a strengthening shot blasting machine for the surface of metal pipe fittings. Background Art

[0002] Shot blasting treatment is a mechanical surface treatment process. It is to shoot shot materials onto the working surface at a very high speed and a certain angle through a shot blasting machine, so that the shot materials impact the working surface.

[0003] The prior art discloses a Chinese patent with the application number CN202210977270.2, a shot blasting recovery treatment device and its usage method for a shot blasting machine, and discloses that through the diversion of the air outlet pipe, the shunt pipe and the air outlet hopper acting horizontally at different heights on the inner wall of the recovery channel. When the shot passes through the recovery channel and passes through the wire mesh, the falling time is increased by the obstruction of the wire mesh. At this time, the wind acts horizontally on the shot, so that the lighter impurities carried on the shot float to one side under the drive of the wind and further adhere to the opposite adhesion plate. Therefore, it plays a role in cleaning the lighter floating dust and impurities on the shot first.

[0004] Although the above device can complete the cleaning of the shot after shot blasting, there are still some problems:

[0005] 1. When applying shot blasting to metal pipe fittings, due to the arc-shaped outer wall of the pipe fittings, it is impossible to perform uniform shot blasting on the outside of the pipe fittings;

[0006] 2. When cleaning the steel shot after shot blasting, it is impossible to separate it from the metal impurities generated during shot blasting. And when cleaning the steel shot, due to the large number of steel shots being easy to accumulate, it is impossible to ensure the cleaning effect inside it. Summary of the Invention

[0007] The purpose of the present invention is to provide a strengthening shot blasting machine for the surface of metal pipe fittings to solve the problems of uniform shot blasting on the outside of metal pipe fittings and sorting of the steel shot after shot blasting proposed in the above background art.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] A shot blasting machine for strengthening the surface of metal pipe fittings, comprising an operation box, with a box door arranged outside the operation box. In the middle of the inner cavity of the operation box, two symmetrically arranged side plates are fixedly installed. Between the side plates on both sides, a sorting box distributed left and right is commonly installed. In the middle of the side plates on both sides, a diversion plate communicating with the sorting boxes on both sides is commonly installed. An internal groove communicating with the inner cavities of the two sorting boxes is opened at the top of the diversion plate. A sorting unit is arranged in the middle of the sorting box. Two groups of corresponding grooves are opened on the upper end surface of the diversion plate. In each group of grooves, an electric push plate is slidably installed through an electric slider. A support plate is commonly installed between the two electric push plates in one group. One side of the support plate is rotatably installed with a surrounding plate. Positioning units are installed on the sides of the two surrounding plates close to each other. Below the sorting unit, a cleaning unit placed at the bottom of the inner cavity of the operation box is provided. A shot blasting head is fixedly installed in the upper part of the inner cavity of the operation box.

[0010] Further, the sorting unit includes a shaft rod, which is rotatably connected in the middle of the sorting box through a motor. A falling port is arranged at the lower part of the sorting box. A plurality of circumferentially arranged magnetic attraction plates are detachably installed outside the shaft rod. An installation groove for disassembling and assembling the magnetic attraction plates is opened on the side of the sorting box.

[0011] Further, a regulating ring is rotatably installed on the side of the surrounding plate away from the support plate through an electric slider. A plurality of circumferentially arranged pushing plates are hinged inside the regulating ring. One end of the pushing plate away from the regulating ring is hinged with an adjusting plate slidably connected to the surrounding plate. A limiting plate is slidably installed on one side of the adjusting plate through an electric slider.

[0012] Further, a traction plate is arranged on one side of the support plate. The traction plate is telescopically arranged on both sides and is fixedly connected to the two support plates respectively. A double-headed push rod is rotatably installed in the middle of the support plate through an electric slider. Belt wheels are fixedly installed at both ends of the double-headed push rod and outside the two surrounding plates. A belt is installed between the corresponding two belt wheels.

[0013] Further, a central cylinder is fixedly installed in the middle of the surrounding plate. The central cylinder is provided with a cylinder fixed to the support plate. A conical block is fixedly installed at the telescopic end of the cylinder. A plurality of abutting plates penetrating and sliding in the central cylinder are circumferentially arranged outside the conical block. A wedge block is fixedly installed on the side of the abutting plate close to the conical block. A spring is commonly installed between one side of the abutting plate and the central cylinder.

[0014] Further, the cleaning unit includes a cleaning frame. Jitter grooves are opened on both sides of the cleaning frame. Connecting plates are slidably installed in the jitter grooves. A return-shaped frame is commonly installed on the side where the two connecting plates are close to each other. A spring is commonly installed between one side of the connecting plate and the cleaning frame. A motor is fixedly installed on one side of the cleaning frame. A cam is fixedly installed at the output end of the motor. The cam is always in contact with one side of the connecting plate. A sieve plate is rotatably installed in the middle of the return-shaped frame. A recovery box is arranged below the sieve plate. An inclined plate is fixedly installed on one side of the recovery box.

[0015] Further, two symmetrically arranged arc-shaped plates are provided on one side of the loop-shaped rack. An arc-shaped block is slidably installed in the arc-shaped plate through an electric slider, and one side of the arc-shaped block is fixedly connected to the sieve plate.

[0016] Further, two symmetrically arranged spraying tanks are fixedly installed on both sides of the cleaning rack. When the spraying tank is opened, it cleans the steel shots on the sieve plate.

[0017] Further, two groups of corresponding side racks are fixedly installed on both sides of the cleaning rack away from the spraying tank. A lifting rack is slidably installed between each group of side racks. A spring located inside the side rack is fixedly installed below the lifting rack. A cleaning brush plate is commonly installed between the two lifting racks on both sides. A rotating rod is rotatably installed between a group of side racks through a motor. A pressing wheel is fixedly installed in the middle of the rotating rod. A contact rack fixed to the lifting rack is provided below the pressing wheel.

[0018] Further, a water receiving tank placed inside the operation box is provided below the cleaning rack. A feeding pipe is commonly installed between one side of the recycling box and the shot blasting head. The feeding pipe transports the cleaned steel shots in the recycling box into the shot blasting head.

[0019] Advantages of the present invention:

[0020] 1. After the steel shots are used to perform shot blasting on the pipe fittings in the present invention and then fall onto the upper part of the diversion plate, since both sides of the diversion plate are inclined, the steel shots and the impurities falling from the outside of the pipe fittings during shot blasting can enter the sorting boxes on both sides through the diversion plate and the internal groove. The motor is turned on to drive the shaft rod to rotate. When the shaft rod rotates, it drives a plurality of magnetic attraction plates to rotate and flip in the sorting box. When the magnetic attraction plates flip, they can adsorb the metal impurities doped in the steel shots. Since the steel shots are non-ferromagnetic metals, when the magnetic attraction plates adsorb the metal impurities falling from the outer wall of the pipe fittings during shot blasting, the steel shots cannot be adsorbed on the magnetic attraction plates, thereby realizing the separation of the steel shots and the metal impurities in the sorting box. When a plurality of magnetic attraction plates rotate and drive the steel shots to move to the bottommost part in the sorting box, at this time, the steel shots fall out of the sorting box.

[0021] 2. When the two ends of the pipe fittings are abutted and fixed in the present invention, the electric slider is turned on to drive the regulation ring to rotate. When the regulation ring rotates, it synchronously drives a plurality of push plates to rotate. When the push plates rotate, they can make a plurality of adjusting plates approach or move away from each other on the surrounding plate. Then the electric slider is turned on to drive the limiting plate to slide on the adjusting plate until the limiting plates on both sides abut against the ends of the pipe fittings, thereby realizing the fixation of both ends of the pipe fittings. Compared with the existing device, the present invention can abut and fix the two end parts of the pipe fittings when shot blasting the pipe fittings, avoiding the situation of left and right deviation of the pipe fittings during shot blasting.

[0022] 3. When the present invention performs uniform shot peening on the outer part of the pipe fitting, the electric slider is turned on to drive the double-headed push rod to rotate. When the double-headed push rod rotates, it drives the surrounding plate to rotate on the support plate through the pulley and the belt. When the surrounding plate rotates, it drives the fixed pipe fitting to rotate. When the pipe fitting rotates, its outer part is successively oriented towards the shot peening head, so that when the shot peening head starts shot peening, it can act uniformly on the outer wall of the pipe fitting. Compared with the existing device, the present invention can, when performing shot peening on the outer part of the pipe fitting, make the outer wall of the pipe fitting uniformly receive shot peening through the rotation of the pipe fitting itself.

[0023] 4. After the steel pipe of the present invention is placed between two support plates and the inner part of the steel pipe is supported and fixed, the air cylinder is turned on to push forward. When the air cylinder pushes forward, it synchronously drives the conical block to move forward. When the conical block moves forward, it squeezes a plurality of wedge blocks. After being squeezed, the plurality of wedge blocks move away from each other. At this time, the abutting plates respectively connected to the plurality of wedge blocks move away from each other until they abut against the inner wall of the pipe fitting. Compared with the existing device, the present invention can, through the abutting and fixing of the inner wall of the pipe fitting, on the one hand, enhance the strength of the steel pipe when the outer wall of the steel pipe receives shot peening, avoid deformation on the outside during polishing, and on the other hand, prevent steel shot from entering the pipe fitting and causing blockage inside the pipe fitting.

[0024] 5. When cleaning the steel shot falling on the sieve plate, the spraying tank is turned on to wash and clean the outside of the steel shot, thereby removing the non-ferromagnetic metal impurities on its outside. And the motor is turned on to drive the cam to rotate. When the cam rotates, it intermittently squeezes the connecting plate. After being squeezed, the connecting plate drives the sieve plate to sieve left and right in the middle of the cleaning frame with the cooperation of the spring. Through the sieving when washing the steel shot on the sieve plate, the outside of the steel shot can be uniformly washed and cleaned. By turning on the electric slider to drive the arc-shaped block to slide downward in the arc-shaped plate, at this time the sieve plate rotates, and when the sieve plate rotates, one side of it turns downward, so that the steel shot that has been washed and cleaned on its upper part can be guided by the inclined plate and put into the recycling box, so as to circularly supply the steel pipe to the shot peening head under the transportation of the feeding pipe. Compared with the existing device, the present invention can, after magnetically separating the metal impurities in the steel shot, wash the non-metallic impurities on its outside through washing and let them fall into the water receiving tank, so as to recycle the used steel pipe after cleaning. Brief Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2It is a schematic diagram of the internal structure of the operation box of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure between the positioning unit and the sorting unit of the present invention;

[0029] Figure 4 It is a schematic diagram of the side sectional structure of the sorting unit of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the positioning unit of the present invention;

[0031] Figure 6 It is a schematic diagram of the partial sectional structure of the central cylinder of the present invention;

[0032] Figure 7 It is a schematic diagram of the partial structure of the positioning unit of the present invention;

[0033] Figure 8 It is a schematic diagram of the side sectional structure between the cleaning unit and the shot blasting head of the present invention;

[0034] Figure 9 It is a schematic diagram of the upper part of the cleaning rack of the present invention;

[0035] Figure 10 It is a schematic diagram of the side sectional structure of the cleaning rack of the present invention.

[0036] The reference signs in the figure are as follows:

[0037] 1. Operation box; 21. Side plate; 22. Sorting box; 23. Shaft rod; 24. Magnetic attraction plate; 25. Deflector; 26. Internal groove; 31. Electric push plate; 32. Support plate; 321. Traction plate; 322. Double-headed push rod; 33. Surrounding plate; 331. Regulation ring; 332. Pushing plate; 333. Adjusting plate; 334. Limiting plate; 34. Central cylinder; 35. Cylinder; 36. Tapered block; 37. Abutting plate; 38. Wedge block; 4. Cleaning rack; 40. Motor; 401. Cam; 41. Jitter groove; 42. Connecting plate; 43. Return-shaped rack; 431. Arc plate; 432. Arc block; 44. Sieve plate; 45. Recycling box; 451. Inclined plate; 46. Side frame; 461. Lifting frame; 462. Cleaning brush plate; 463. Rotating rod; 464. Pressing wheel; 465. Contact frame; 47. Spraying box; 48. Water receiving box; 5. Shot blasting head; 51. Feeding pipe. Detailed implementation manners

[0038] 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 making creative efforts belong to the scope of protection of the present invention.

[0039] As shown in the attached Figures 1-9 figure, a shot blasting machine for strengthening the surface of metal pipe fittings includes an operation box 1 with a box door on the outside. In the middle of the inner cavity of the operation box 1, two symmetrically arranged side plates 21 are fixedly installed. A sorting box 22 distributed left and right is jointly installed between the two side plates 21 on both sides. A flow guide plate 25 communicating with the sorting boxes 22 on both sides is jointly installed in the middle of the two side plates 21. An internal groove 26 communicating with the inner cavities of the two sorting boxes 22 is opened at the top of the flow guide plate 25. A sorting unit is arranged in the middle of the sorting box 22. Two groups of corresponding grooves are opened on the upper end surface of the flow guide plate 25. An electric push plate 31 is slidably installed in each group of grooves through an electric slider. A support plate 32 is jointly installed between the two electric push plates 31 in one group. A surrounding plate 33 is rotatably installed on one side of the support plate 32. Positioning units are installed on the closer sides of the two surrounding plates 33. A cleaning unit placed at the bottom of the inner cavity of the operation box 1 is arranged below the sorting unit. A shot blasting head 5 is fixedly installed in the upper part of the inner cavity of the operation box 1.

[0040] Place the pipe fittings to be shot blasted between the two support plates 32, turn on the electric slider to make the two groups of electric push plates 31 approach each other until the positioning unit is placed into the inner wall of the pipe fittings, and then the positioning unit fixes it. The box door on the operation box 1 is closed to keep the inside of the operation box 1 airtight during the polishing operation of the pipe fittings. The shot blasting head 5 is turned on to perform shot blasting treatment on the outer wall of the pipe fittings. The setting of the sorting unit can perform magnetic separation treatment on the steel shots thrown by the shot blasting head 5 and the metal impurities knocked off on the outer wall of the steel pipe. Through the setting of the cleaning unit, the used steel shots can be rinsed to remove iron oxide impurities that cannot be adsorbed during magnetic separation, etc., so as to recycle the used steel shots after cleaning.

[0041] As shown in the attached Figure 3 、 Figure 4 figure, the sorting unit includes a shaft rod 23. The shaft rod 23 is rotatably connected in the middle of the sorting box 22 through a motor. A falling port is arranged at the lower part of the sorting box 22. A plurality of circumferentially arranged magnetic attraction plates 24 are detachably installed on the outside of the shaft rod 23. An installation groove for disassembling and assembling the magnetic attraction plates 24 is opened on the side of the sorting box 22.

[0042] After the steel shot falls onto the upper part of the diversion plate 25 after shot blasting the pipe fitting, since both sides of the diversion plate 25 are inclined, the steel shot and the impurities falling from the outside of the pipe fitting during shot blasting can enter the sorting boxes 22 on both sides through the diversion plate 25 and the internal groove 26. The motor is turned on to drive the shaft rod 23 to rotate. When the shaft rod 23 rotates, it drives a plurality of magnetic attraction plates 24 to change positions and flip in the sorting box 22. When the magnetic attraction plates 24 flip, they can adsorb the metal impurities doped in the steel shot. Since the steel shot is a non-ferromagnetic metal, when the magnetic attraction plates 24 adsorb the metal impurities falling from the outer wall of the pipe fitting during shot blasting, the steel shot fails to be adsorbed on the magnetic attraction plates 24, thereby realizing the separation of the steel shot and the metal impurities in the sorting box 22. When a plurality of magnetic attraction plates 24 rotate to drive the steel shot to move to the lowermost part in the sorting box 22, at this time, the steel shot falls out of the sorting box 22.

[0043] As shown in the appendix Figure 5 、 Figure 7 As shown in the figure, on the side of the surrounding plate 33 away from the support plate 32, a regulation ring 331 is rotatably installed through an electric slider. A plurality of circumferentially arranged push plates 332 are hinged inside the regulation ring 331. One end of the push plate 332 away from the regulation ring 331 is hinged with an adjustment plate 333 slidably connected to the surrounding plate 33. On one side of the adjustment plate 333, a limiting plate 334 is slidably installed through an electric slider.

[0044] When abutting and fixing both sides of the pipe fitting, the electric slider is turned on to drive the regulation ring 331 to rotate. When the regulation ring 331 rotates, it synchronously drives a plurality of push plates 332 to rotate. When the push plates 332 rotate, they can make a plurality of adjustment plates 333 approach or move away from each other on the surrounding plate 33. Subsequently, the electric slider is turned on to drive the limiting plate 334 to slide on the adjustment plate 333 until the limiting plates 334 on both sides abut against the ends of the pipe fitting, thereby realizing the fixation of both ends of the pipe fitting. Compared with the existing device, the present invention can abut and fix both ends of the pipe fitting when shot blasting the pipe fitting, avoiding the situation that the pipe fitting deflects left and right during shot blasting.

[0045] On one side of the support plate 32, a traction plate 321 is provided. The traction plate 321 is telescopically arranged on both sides and is respectively fixedly connected to the two support plates 32. In the middle of the support plate 32, a double-headed push rod 322 is rotatably installed through an electric slider. Belt wheels are fixedly installed at both ends of the double-headed push rod 322 and on the outside of the two surrounding plates 33, and a belt is installed between the corresponding two belt wheels.

[0046] When performing uniform shot peening on the outside of the pipe fitting, the electric slider is turned on to drive the double-headed push rod 322 to rotate. When the double-headed push rod 322 rotates, it drives the surrounding plate 33 to rotate on the support plate 32 through a pulley and a belt. When the surrounding plate 33 rotates, it drives the fixed pipe fitting to rotate. When the pipe fitting rotates, its outside sequentially faces the shot peening head 5, so that when the shot peening head 5 starts shot peening, it can act evenly on the outer wall of the pipe fitting. Compared with the existing device, the present invention can, when performing shot peening on the outside of the pipe fitting, make the outer wall of the pipe fitting evenly receive the shot peening operation through the rotation of the pipe fitting itself.

[0047] As shown in the Figure 6 accompanying drawings, a central cylinder 34 is fixedly installed in the middle of the surrounding plate 33. A cylinder 35 fixed to the support plate 32 is provided in the central cylinder 34. A tapered block 36 is fixedly installed at the telescopic end of the cylinder 35. A plurality of abutting plates 37 that penetrate and slide in the central cylinder 34 are circumferentially arranged outside the tapered block 36. A wedge block 38 is fixedly installed on one side of the abutting plate 37 close to the tapered block 36. A spring is jointly installed between one side of the abutting plate 37 and the central cylinder 34.

[0048] After the steel pipe is placed between the two support plates 32 and the inside of the steel pipe is supported and fixed, when the cylinder 35 is turned on and pushed forward, the cylinder 35 drives the tapered block 36 to move forward synchronously when it is pushed forward. When the tapered block 36 moves forward, it squeezes a plurality of wedge blocks 38. After being squeezed, the plurality of wedge blocks 38 move away from each other. At this time, the abutting plates 37 respectively connected to the plurality of wedge blocks 38 move away from each other until they abut against the inner wall of the pipe fitting. Compared with the existing device, the present invention can, through the abutting and fixing of the inner wall of the pipe fitting, on the one hand, enhance the strength of the pipe fitting and prevent deformation on the outside during polishing, and on the other hand, prevent steel shot from entering the pipe fitting and causing blockage inside the pipe fitting.

[0049] As shown in the Figure 8 and Figure 9 accompanying drawings, the cleaning unit includes a cleaning frame 4. Dithering grooves 41 are opened on both sides of the cleaning frame 4. A connecting plate 42 is slidably installed in the dithering grooves 41. A return frame 43 is jointly installed on one side close to each other of the two connecting plates 42. A spring is jointly installed between one side of the connecting plate 42 and the cleaning frame 4. A motor 40 is fixedly installed on one side of the cleaning frame 4. A cam 401 is fixedly installed at the output end of the motor 40. The cam 401 is always in contact with one side of the connecting plate 42. A sieve plate 44 is rotatably installed in the middle of the return frame 43. A recovery box 45 is provided below the sieve plate 44. An inclined plate 451 is fixedly installed on one side of the recovery box 45.

[0050] When cleaning the steel shots that fall onto the sieve plate 44, the spraying tank 47 is opened to rinse and clean the outside of the steel shots, thereby removing the non-ferromagnetic metal impurities on their outside. And the motor 40 is started to drive the cam 401 to rotate. When the cam 401 rotates, it intermittently presses the connecting plate 42. After being pressed, the connecting plate 42 drives the sieve plate 44 to sieve left and right in the middle of the cleaning frame 4 with the cooperation of the spring. By sieving the steel shots on the sieve plate 44 during rinsing, the outside of the steel shots can be evenly rinsed and cleaned. The electric slider is started to drive the arc-shaped block 432 to slide downward in the arc-shaped plate 431. At this time, the sieve plate 44 rotates. When the sieve plate 44 rotates, one side of it turns downward. Thus, the steel shots that have been rinsed and cleaned on its upper part can be guided by the inclined plate 451 and put into the recycling box 45, so as to provide steel pipes for the shot blasting head 5 cyclically under the transportation of the feeding pipe 51. Compared with the existing device, the present invention can, after magnetic separation of the metal impurities in the steel shots, rinse the non-metallic impurities on their outside through rinsing and let them fall into the water receiving tank 48, so as to recycle the used steel pipes after cleaning.

[0051] As shown in the Figure 10 accompanying drawings, two symmetrically arranged arc-shaped plates 431 are provided on one side of the return-shaped frame 43. An arc-shaped block 432 is slidably installed in the arc-shaped plate 431 through an electric slider. One side of the arc-shaped block 432 is fixedly connected to the sieve plate 44.

[0052] As shown in the Figure 9 accompanying drawings, two symmetrically arranged spraying tanks 47 are fixedly installed on both sides of the cleaning frame 4. When the spraying tank 47 is opened, it cleans the steel shots on the sieve plate 44.

[0053] Two groups of corresponding side frames 46 are fixedly installed on the two sides of the cleaning frame 4 far away from the spraying tank 47. A lifting frame 461 is slidably installed between each group of side frames 46. A spring located inside the side frame 46 is fixedly installed below the lifting frame 461. A cleaning brush plate 462 is jointly installed between the two lifting frames 461 on both sides. A rotating rod 463 is rotatably installed between a group of side frames 46 through a motor. A pressing wheel 464 is fixedly installed in the middle of the rotating rod 463. A contact frame 465 fixed to the lifting frame 461 is provided below the pressing wheel 464.

[0054] When wiping the outside of the steel shots after rinsing, the motor is started to drive the rotating rod 463 to rotate. When the rotating rod 463 rotates, it synchronously drives the pressing wheel 464 to rotate and then presses down the contact frame 465. At this time, the contact frame 465 slides down in the side frame 46 through the lifting frame 461. Thus, the cleaning brush plate 462 wipes the outside of the steel shots, and with the left and right sieving of the sieve plate 44, the drying of the rinsed steel shots is accelerated.

[0055] A water receiving tank 48 is provided below the cleaning rack 4 and is placed inside the operation box 1. A feeding pipe 51 is commonly installed between one side of the recycling box 45 and the shot blasting head 5. The feeding pipe 51 conveys the cleaned steel shots in the recycling box 45 into the shot blasting head 5.

[0056] During use, place the pipe fittings to be shot blasted between the two support plates 32. Turn on the electric slider to make the two groups of electric push plates 31 approach each other until the positioning unit is placed inside the pipe fitting wall, and then the positioning unit fixes it. The door of the operation box 1 is closed to keep the inside of the operation box 1 airtight during the polishing operation of the pipe fittings. The shot blasting head 5 is turned on to perform shot blasting treatment on the outer wall of the pipe fittings. The setting of the sorting unit can perform magnetic separation treatment on the steel shots thrown by the shot blasting head 5 and the metal impurities knocked off the outer wall of the steel pipe. Through the setting of the cleaning unit, the used steel shots can be rinsed to remove iron oxide impurities that cannot be adsorbed during magnetic separation, etc., so as to recycle the used steel shots after cleaning. When the steel shots fall onto the upper part of the diversion plate 25 after shot blasting the pipe fittings, since both sides of the diversion plate 25 are inclined, the steel shots and the impurities falling from the outside of the pipe fittings during shot blasting can enter the sorting boxes 22 on both sides through the diversion plate 25 and the internal groove 26. The motor is turned on to drive the shaft rod 23 to rotate. When the shaft rod 23 rotates, it drives a plurality of magnetic adsorption plates 24 to rotate and turn over in the sorting box 22. When the magnetic adsorption plates 24 turn over, they can adsorb the metal impurities doped in the steel shots. Since the steel shots are non-ferromagnetic metals, when the magnetic adsorption plates 24 adsorb the metal impurities falling from the outer wall of the pipe fittings during shot blasting, the steel shots are not adsorbed on the magnetic adsorption plates 24, thus realizing the separation of the steel shots and the metal impurities in the sorting box 22. When the rotation of the plurality of magnetic adsorption plates 24 drives the steel shots to move to the bottom of the sorting box 22, at this time, the steel shots fall out of the sorting box 22;

[0057] When making abutting and fixing on both sides of the pipe fitting, the electric slider is activated to drive the regulating ring 331 to rotate. When the regulating ring 331 rotates, it synchronously drives a plurality of pushing plates 332 to rotate. When the pushing plates 332 rotate, it can make a plurality of adjusting plates 333 approach or move away from each other on the surrounding plate 33. Subsequently, the electric slider is activated to drive the limiting plate 334 to slide on the adjusting plate 333 until the limiting plates 334 on both sides abut against the ends of the pipe fitting, thereby realizing the fixation of both ends of the pipe fitting. Compared with the existing device, the present invention can abut and fix the two ends of the pipe fitting when shot blasting the pipe fitting, avoiding the situation of left - right deviation of the pipe fitting during shot blasting. When performing uniform shot blasting on the outside of the pipe fitting, the electric slider is activated to drive the double - headed push rod 322 to rotate. When the double - headed push rod 322 rotates, it drives the surrounding plate 33 to rotate on the support plate 32 through a belt pulley and a belt. When the surrounding plate 33 rotates, it drives the fixed pipe fitting to rotate. When the pipe fitting rotates, its outside sequentially faces the shot blasting head 5, so that the shot blasting can act evenly on the outer wall of the pipe fitting when the shot blasting head 5 starts shot blasting. Compared with the existing device, the present invention can, when shot blasting the outside of the pipe fitting, make the outer wall of the pipe fitting evenly receive shot blasting operations through the rotation of the pipe fitting itself;

[0058] After the steel pipe is placed between the two support plates 32 and the inside of the steel pipe is supported and fixed, when the cylinder 35 is opened and pushed forward, the conical block 36 is synchronously driven to move forward when the cylinder 35 is pushed forward. When the conical block 36 moves forward, it squeezes a plurality of wedge blocks 38. After being squeezed, the plurality of wedge blocks 38 move away from each other. At this time, the abutting plates 37 respectively connected to the plurality of wedge blocks 38 move away from each other until they abut against the inner wall of the pipe fitting. Compared with the existing device, the present invention can, through the abutting and fixing of the inner wall of the pipe fitting, on the one hand, enhance the strength of the steel pipe when the outer wall of the steel pipe is subjected to shot blasting operation, avoid external deformation during polishing, and on the other hand, prevent steel shots from entering the pipe fitting and causing blockage inside the pipe fitting. When cleaning the steel shots falling on the sieve plate 44, the spraying tank 47 is opened to wash and clean the outside of the steel shots, thereby removing the non-ferromagnetic metal impurities on its outside. And the motor 40 is started to drive the cam 401 to rotate. When the cam 401 rotates, it intermittently squeezes the connecting plate 42. After being squeezed, the connecting plate 42 drives the sieve plate 44 to sieve left and right in the middle of the cleaning frame 4 under the cooperation of the spring. By sieving the steel shots on the sieve plate 44 during washing, the outside of the steel shots can be evenly washed and cleaned. The electric slider is opened to drive the arc-shaped block 432 to slide downward in the arc-shaped plate 431. At this time, the sieve plate 44 rotates. When the sieve plate 44 rotates, one side of it turns downward, so that the steel shots that have been washed and cleaned on its upper part can be guided by the inclined plate 451 and put into the recycling box 45, so as to circularly supply the steel pipe to the shot blasting head 5 under the transportation of the feeding pipe 51. Compared with the existing device, the present invention can, after magnetic separation of the metal impurities in the steel shots, wash the non-metallic impurities on its outside and let them fall into the water receiving tank 48, so as to recycle the used steel pipe after cleaning;

[0059] When wiping the outside of the steel shots after washing, the motor is started to drive the rotating rod 463 to rotate. When the rotating rod 463 rotates, it synchronously drives the pressing wheel 464 to rotate and then presses down the contact frame 465. At this time, the contact frame 465 slides down in the side frame 46 through the lifting frame 461, so that the cleaning brush plate 462 wipes the outside of the steel shots, and in cooperation with the left and right sieving of the sieve plate 44, the drying of the washed steel shots is accelerated.

[0060] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A shot blasting machine for strengthening the surface of a metal pipe, comprising a working box (1), the working box (1) being provided with a door outside, characterized in that: Two symmetrically arranged side plates (21) are fixedly installed in the middle of the inner cavity of the working box (1), and left and right distributed sorting boxes (22) are installed between the side plates (21) on both sides. A guide plate (25) connected to the sorting boxes (22) on both sides is installed in the middle of the side plates (21) on both sides. An internal groove (26) connected to the inner cavities of the two sorting boxes (22) is opened on the top of the guide plate (25). A sorting unit is arranged in the middle of the sorting box (22). Two groups of corresponding grooves are opened on the upper end surface of the guide plate (25). An electric push plate (31) is slidably installed in each group of grooves through an electric slider. A support plate (32) is installed between the two electric push plates (31) in one group. A surrounding plate (33) is rotatably installed on one side of the support plate (32). Positioning units are installed on the adjacent sides of the two surrounding plates (33). A cleaning unit placed at the bottom of the inner cavity of the working box (1) is arranged below the sorting unit. A shot blasting head (5) is fixedly installed on the upper part of the inner cavity of the working box (1).

2. A shot blasting machine for strengthening the surface of metal pipes according to claim 1, characterized in that: The sorting unit comprises a shaft (23), the shaft (23) is rotatably connected to the middle of a sorting box (22) through a motor, a drop opening is provided at the lower part of the sorting box (22), a plurality of circumferentially arranged magnetic plates (24) are detachably mounted on the outside of the shaft (23), and a mounting groove for disassembling and mounting the magnetic plates (24) is provided on the side of the sorting box (22).

3. A shot blasting machine for strengthening the surface of a metal pipe according to claim 2, characterized in that: A regulating ring (331) is rotatably mounted on the side of the surrounding plate (33) away from the support plate (32) via an electric slider, a plurality of circumferentially arranged pushing plates (332) are hingedly connected to the inner side of the regulating ring (331), an adjusting plate (333) slidably connected to the surrounding plate (33) is hingedly connected to one end of the pushing plate (332) away from the regulating ring (331), and a limiting plate (334) is slidably mounted on one side of the adjusting plate (333) via an electric slider.

4. A shot blasting machine for strengthening the surface of a metal pipe according to claim 3, characterized in that: A traction plate (321) is provided on one side of the support plate (32). The traction plate (321) is telescopically arranged at both sides and is respectively fixedly connected to the two support plates (32). A double-headed push rod (322) is rotatably installed in the middle of the support plate (32) via an electric slider. Belt pulleys are fixedly installed at both ends of the double-headed push rod (322) and on the outside of the two surrounding plates (33). A belt is installed between the two corresponding belt pulleys.

5. A shot blasting machine for strengthening the surface of metal pipes according to claim 4, characterized in that: A central tube (34) is fixedly mounted in the middle of the surrounding plate (33), and the central tube (34) is provided with a cylinder (35) fixed to the support plate (32). A conical block (36) is fixedly mounted on the telescopic end of the cylinder (35), and a plurality of abutment plates (37) penetrating through and sliding on the central tube (34) are arranged in an annular manner on the outside of the conical block (36), and a wedge block (38) is fixedly mounted on one side of the abutment plate (37) close to the conical block (36), and a spring is installed between one side of the abutment plate (37) and the central tube (34).

6. A shot blasting machine for strengthening the surface of a metal pipe according to claim 1, characterized in that: The cleaning unit comprises a cleaning frame (4), both sides of the cleaning frame (4) are provided with shaking grooves (41), connecting plates (42) are slidably installed in the shaking grooves (41), a return frame (43) is installed on one side of the two connecting plates (42) close to each other, a spring is installed between one side of the connecting plate (42) and the cleaning frame (4), a motor (40) is fixedly installed on the cleaning frame (4) on one side, a cam (401) is fixedly installed on the output end of the motor (40), and the cam (401) is always in contact with the connecting plate (42) on one side, a sieve plate (44) is rotatably installed in the middle of the return frame (43), a recovery box (45) is provided below the sieve plate (44), and an inclined plate (451) is fixedly installed on one side of the recovery box (45).

7. A shot blasting machine for strengthening the surface of metal pipes according to claim 6, characterized in that: Two symmetrically arranged arc plates (431) are provided on one side of the return frame (43), an arc block (432) is slidably installed in the arc plate (431) via an electric slider, and one side of the arc block (432) is fixedly connected to the screen plate (44).

8. A shot blasting machine for strengthening the surface of a metal pipe according to claim 6, characterized in that: Two symmetrically arranged spray boxes (47) are fixedly mounted on both sides of the cleaning frame (4). When the spray boxes (47) are opened, the steel shots on the sieve plate (44) are cleaned.

9. A shot blasting machine for strengthening the surface of a metal pipe according to claim 8, characterized in that: Two groups of corresponding side frames (46) are fixedly installed on both sides of the cleaning frame (4) away from the spray box (47), a lifting frame (461) is slidably installed between each group of side frames (46), a spring located in the side frame (46) is fixedly installed below the lifting frame (461), a cleaning brush plate (462) is installed between the lifting frames (461) on both sides, a rotating rod (463) is installed between a group of side frames (46) through the rotation of a motor, a pressing wheel (464) is fixedly installed in the middle of the rotating rod (463), and a contact frame (465) fixed to the lifting frame (461) is provided below the pressing wheel (464).

10. A shot blasting machine for strengthening the surface of a metal pipe according to claim 9, characterized in that: A water receiving box (48) is provided below the cleaning frame (4) and is placed in the inner cavity of the working box (1). A feeding pipe (51) is installed between one side of the recovery box (45) and the shot blasting head (5). The feeding pipe (51) transports the cleaned steel shots in the recovery box (45) to the shot blasting head (5).

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