Environment-friendly dust removal device of shot blasting machine

Abstract

The invention belongs to the technical field of dust removal, and particularly relates to an environment-friendly dust removal device of a shot blasting machine. The interior of the shell is fixedly connected with an air guide pipe, and the air guide pipe is located at the top in the shell; a dust removal box is arranged at the end, away from the shell, of the air guide pipe. The side, close to the dust removal box, of the shell is fixedly connected with a pair of guide rails, the dust removal box is slidably connected with the guide rails, the dust removal box is lifted and lowered through a threaded column, so that the dust removal box can be lifted to the position close to the top of the shell by the threaded column during working, and at the moment, an air guide pipe and a butt joint pipe can be connected into a complete straight pipe; therefore, excessive 90-degree bending angles do not exist, dust accumulation caused by the excessive bending angles can be reduced, the air inlet amount of the air guide pipe and the butt joint pipe can be guaranteed, the suction force to the interior of the shell is guaranteed, the suction effect on dust-containing air is improved, and the atmospheric pollution and the dust leakage amount are further reduced.

Description

Technical Field

[0001] This invention belongs to the field of dust removal technology, specifically an environmentally friendly dust removal device for shot blasting machines. Background Technology

[0002] Shot blasting machines are surface treatment equipment that uses high-speed projectiles to impact the surface of workpieces, removing impurities such as oxide scale, rust, welding slag, and burrs through mechanical impact and grinding. They can be classified into various types according to their structure, including crawler type, hook type, through type, and rotary table type. They are widely used in industries such as casting, forging, and steel structure. However, because their core working principle involves the mechanical crushing and friction generated when high-speed projectiles impact the workpiece surface, achieving grinding and polishing, this process results in the generation of very fine debris between the workpiece and the projectiles. This debris accumulates and forms a mist-like dust, which not only threatens the lives of workers but also causes serious air pollution if directly emitted.

[0003] Dust pollution generated by shot blasting machines is mainly purified by bag filters. Bag filters use negative pressure generated by a fan to draw dust-laden gas from the shot blasting chamber into the dust collector housing. When the dust-laden gas passes through the outer surface of the filter bags, the dust is trapped on the outside of the filter bags, and the clean gas passes through the filter bags into the clean air chamber and is discharged by the fan.

[0004] Existing technologies have also proposed some specific solutions. For example, a patent application with publication number CN106112827A discloses a shot blasting machine, which includes a frame, a shot blasting chamber, a shot blasting device, a suspension mechanism, a shot collection device, a lower sand box, an upper sand box, a lifting device, and a dust removal device. By sorting in real time during operation, it simultaneously removes small-diameter shot and impurities. It has the advantages of fast and efficient dust removal, timely and reliable impurity removal, and avoidance of blockage. While improving efficiency, it also extends service life and improves the hygiene of the equipment.

[0005] The dust removal equipment in the above technology connects the shot blasting machine's working chamber to the dust collection box through a dust removal pipe. However, since the dust collection box uses a filter bag for dust removal, the dust must enter from the bottom of the dust collection box. This requires the dust removal pipe to have multiple 90-degree bends, which not only affects the air intake of the dust collection box but also causes dust to accumulate at the bends.

[0006] Therefore, the present invention provides an environmentally friendly dust removal device for shot blasting machines. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0008] The technical solution adopted by this invention to solve its technical problem is as follows: An environmentally friendly dust removal device for a shot blasting machine, comprising a housing; the housing is the outer shell of the shot blasting machine; an air guide pipe is fixedly connected inside the housing and located at the top of the housing; a dust collection box is provided at the end of the air guide pipe away from the housing; a pair of guide rails are fixedly connected to the side of the housing near the dust collection box, and the dust collection box is slidably connected to the guide rails; a connecting pipe is fixedly connected to the surface of the dust collection box at a corresponding position of the air guide pipe; the connecting pipe and the air guide pipe are fixedly connected together by a connecting component; a fan is fixedly connected to the top surface of the dust collection box, and the fan is driven by a motor; a partition is fixedly connected inside the dust collection box; mounting holes are opened on the surface of the partition; a support frame is inserted into the mounting holes; a cloth bag is fitted onto the surface of the support frame; a threaded post is threadedly connected to the bottom of the dust collection box and away from the housing, and the threaded post is driven by a motor.

[0009] Preferably, the connecting assembly includes a pair of mating rings; the two mating rings are respectively fixedly connected to the mating pipe and the air guide pipe at their respective close ends; each mating ring has a plurality of evenly arranged slots on its side; a pull rod is disposed in each slot; a pressure plate is fixedly connected to the side of the pull rod near the dust collector; a connecting ring is rotatably connected to the end of the pull rod away from the pressure plate; the connecting ring is slidably connected to the air guide pipe; a sleeve is rotatably connected to the inner side of the connecting ring; the sleeve is threadedly connected to the air guide pipe. Preferably, the surface of the connecting ring has a plurality of evenly arranged through holes; a push rod is slidably connected in the through hole; a connecting pipe is slidably connected to the end of the push rod away from the docking ring, and the connecting pipe is fixedly connected to the air guide pipe; a pressure rod is slidably connected to the end of the connecting pipe away from the push rod, and the pressure rod is fixedly connected to the connecting ring; the connecting pipe is U-shaped, and the interior between the pressure rod and the push rod is filled with hydraulic oil.

[0010] Preferably, a plurality of evenly arranged connecting plates are fixedly connected to the side surface of the connecting ring; the plurality of connecting plates are slidably connected to a limiting ring; a steel wire rope is fixedly connected to the outer side of the limiting ring; and the end of the steel wire rope away from the limiting ring is fixedly connected to a pull rod.

[0011] Preferably, both ends of the limiting plate are fixedly connected to baffles; a spring is fixedly connected between the two baffles and the limiting ring.

[0012] Preferably, the dust collector is provided with a top cover; the fan is fixedly connected to the top surface of the top cover, and the top cover and the dust collector are fixed together by bolts; a support rod is slidably connected inside the dust collector, and the support rod is located at the bottom of the filter bag; a traction rope is installed at both ends of the support rod; a handle is fixedly connected to the ends of the two traction ropes away from the support rod; a pair of through holes are opened on the surface of the partition, and the two traction ropes pass through the two through holes respectively.

[0013] Preferably, a backing plate is fixedly connected to the inner wall of the top cover on the side away from the shell; a support column is fixedly connected to the bottom of the backing plate on the top surface of the partition plate; a sliding rod is slidably connected to the top surface of the support column; a guide wheel is rotatably connected to the top surface of the sliding rod; and a pair of springs are fixedly connected between the sleeve rod and the partition plate.

[0014] Preferably, a rotating rod is rotatably connected to the inner wall of the dust collector away from the shell; the rotating rod is located on the top surface of the partition and passes through the dust collector; a gear is fixedly connected to the surface of the rotating rod; a pair of toothed plates are meshed with the surface of the gear and are slidably connected to the inner wall of the dust collector; each of the two toothed plates is fixedly connected to a plug rod at one end away from each other; an insertion hole is provided on the surface of the support column near the top position, and the insertion hole is adapted to the plug rod.

[0015] Preferably, both ends of the handle are rotatably connected to rotating tubes; a block is fixedly connected to the surface of the rotating tube, and the block is cone-shaped; the traction rope is fixedly attached to the surface of the rotating tube, and the traction rope passes through the block, and the block is made of rubber.

[0016] Preferably, a support rod is fixedly connected to one side of the top cover; a sleeve is slidably connected to the bottom of the support rod; the sleeve is fixedly connected to the surface of the dust collector box; a vertical groove and a horizontal groove are opened on the surface of the sleeve, and the horizontal groove is located at the top of the vertical groove; a limiting post is fixedly connected to the surface of the support rod, and the limiting post is adapted to the vertical groove and the horizontal groove.

[0017] The beneficial effects of this invention are as follows: 1. The environmental dust removal device for shot blasting machines described in this invention uses a threaded column to raise and lower the dust collection box. During operation, the dust collection box is raised to a position near the top of the housing by the threaded column. At this point, the air guide pipe and the connecting pipe can be connected to form a complete straight pipe, eliminating excessive 90-degree bends. This not only reduces dust accumulation caused by excessive bends but also ensures the air intake of the air guide pipe and the connecting pipe, thereby guaranteeing suction power inside the housing and improving the suction effect on dust-laden air. This further reduces air pollution and dust leakage.

[0018] 2. The environmentally friendly dust removal device for shot blasting machines described in this invention allows the air guide pipe to be disengaged from the slot by rotating the pull rod. This disconnects the air guide pipe from the connecting pipe. Thus, the user only needs to turn the sleeve and rotate the pull rod to connect and disconnect the air guide pipe and the connecting pipe, thereby reducing the difficulty for the user to connect the two. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a partial cross-sectional view of the shell in this invention; Figure 3 This is a schematic diagram of the dust collection box in this invention; Figure 4 This is a schematic diagram of the pipe assembly structure in this invention; Figure 5 This is a schematic diagram of the support frame in this invention; Figure 6 This is a schematic diagram of the top cover structure in this invention; Figure 7 This is a schematic diagram of the partition structure in this invention; Figure 8 This is a cross-sectional view of the dust collection box in this invention; Figure 9 This is a schematic diagram of the supporting column in this invention; Figure 10 This is a schematic diagram of the handle structure in this invention; Figure 11 This is a schematic diagram of the sleeve structure in this invention; In the diagram: 1. Shell; 2. Air duct; 3. Dust collector; 4. Guide rail; 5. Connecting pipe; 6. Fan; 7. Partition plate; 8. Mounting hole; 9. Support frame; 10. Filter bag; 11. Threaded post; 12. Connecting ring; 13. Slot; 14. Tie rod; 15. Pressure plate; 16. Connecting ring; 17. Sleeve; 18. Through hole one; 19. Top rod; 20. Connecting pipe; 21. Pressure rod; 22. Connecting plate; 23. Limiting ring; 24. Steel wire rope; 5. Baffle; 26. Spring 1; 27. Top cover; 28. Support rod; 29. ​​Traction rope; 30. Handle; 31. Through hole 2; 32. Support plate; 33. Support column; 34. Sliding rod; 35. Guide wheel; 36. Spring 2; 37. Rotating rod; 38. Gear; 39. Tooth plate; 40. Insert rod; 41. Insertion hole; 42. Rotating tube; 43. Block; 44. Support rod; 45. Sleeve; 46. Vertical groove; 47. Horizontal groove; 48. Limiting post. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 7As shown in the embodiment of the present invention, an environmentally friendly dust removal device for a shot blasting machine includes a housing 1; the housing 1 is the outer shell of the shot blasting machine; an air guide pipe 2 is fixedly connected inside the housing 1 and located at the top inside the housing 1; a dust collection box 3 is provided at the end of the air guide pipe 2 away from the housing 1; a pair of guide rails 4 are fixedly connected to the side of the housing 1 near the dust collection box 3, and the dust collection box 3 is slidably connected to the guide rails 4; a connecting pipe 5 is fixedly connected to the surface of the dust collection box 3 at a position corresponding to the air guide pipe 2; the connecting pipe 5 and the air guide pipe 2 are fixedly connected together by a connecting assembly; the dust collection box 3... A fan 6 is fixedly connected to the top surface and is driven by a motor; a partition 7 is fixedly connected inside the dust collection box 3; mounting holes 8 are provided on the surface of the partition 7; a support frame 9 is inserted into the mounting holes 8; a cloth bag 10 is fitted onto the surface of the support frame 9; a threaded post 11 is threadedly connected to the bottom of the dust collection box 3 on the side away from the shell 1, and the threaded post 11 is driven by a motor; during operation, to avoid the use of bends in the pipes, to ensure that the dust collection device uses as few bends as possible, and to ensure suction efficiency, the embodiment of the present invention can be used. First, when the shot blasting machine is working, the shot blasting machine produces... Dust accumulates inside the casing 1. Then, the fan 6 starts and draws in the dust collector 3, creating a negative pressure inside the dust collector 3. The air duct 2 is connected via the connecting pipe 5, so it is also under negative pressure. Therefore, the air duct 2 can draw in the dust from inside the casing 1. Once the dust is drawn into the dust collector 3, the filter bags 10 on the surface of the support frame 9 filter the dust, leaving it on the outside of the bags. Clean air passes through the bags 10, enters the inside of the bags, and is discharged from the top by the fan 6, thus completing the entire dust purification process. The second motor can raise and lower the dust collector 3 via the threaded column 11, so that when the dust collector 3 is working, it can be raised to a position close to the top of the housing 1 by the threaded column 11. At this time, the air guide pipe 2 and the connecting pipe 5 can be connected to form a complete straight pipe, thus eliminating too many 90-degree bends. This not only reduces dust accumulation caused by too many bends, but also ensures the air intake of the air guide pipe 2 and the connecting pipe 5, thereby ensuring the suction force inside the housing 1 and improving the suction effect of dust-containing air, thereby further reducing air pollution and reducing dust leakage.

[0023] like Figures 1 to 4As shown, the connecting assembly includes a pair of docking rings 12; the two docking rings 12 are respectively fixedly connected to the ends of the docking tube 5 and the air guide tube 2 that are close to each other; each docking ring 12 has a plurality of evenly arranged slots 13 on its side; the surface of the air guide tube 2 is provided with a connecting ring 16; a plurality of evenly arranged pull rods 14 are rotatably connected to the side of the connecting ring 16 near the docking ring 12, and the pull rods 14 are arranged in a one-to-one correspondence with the slots 13; a pressure plate 15 is fixedly connected to the side of the pull rod 14 away from the connecting ring 16; the pull rod 14 is further fixed away from the pressure plate 15. One end of the disc 15 is rotatably connected to a connecting ring 16; a sleeve 17 is rotatably connected to the inner side of the connecting ring 16; the sleeve 17 is threadedly connected to the air guide pipe 2; during operation, when the user connects the air guide pipe 2 to the connecting pipe 5, the user needs to rotate the pull rod 14 to engage the pull rod 14 into the slots 13 on the surfaces of the two connecting rings 12. Then, the user screws the sleeve 17, which drives the pull rod 14 to move away from the dust collector 3. At this time, the pressure plate 15 at the end of the pull rod 14 will press against the surface of the connecting ring 12. This presses the mating ring 12 on the end face of the air duct 2 against the mating ring 12 on the end face of the connecting pipe 5, thus completing the connection between the connecting pipe 5 and the air duct 2. When it is necessary to disconnect the connection between the connecting pipe 5 and the air duct 2, the user only needs to turn the sleeve 17, causing it to move the connecting ring 16 towards the dust collector 3. At this time, the pressure plate 15 at the end of the pull rod 14 is no longer pressed tightly against the surface of the mating ring 12. Then, the user can turn the pull rod 14 to disengage it from the slot 13, thereby disconnecting the air duct 2 from the connecting pipe 5. The connection and disconnection between the air duct 2 and the connecting pipe 5 can be completed simply by turning the sleeve 17 and rotating the pull rod 14. This not only ensures the stability of the connection between the air duct 2 and the connecting pipe 5, but also simplifies the user's difficulty in disconnecting the two connecting pipes compared to traditional bolt connections. Even if the air duct 2 and the connecting pipe 5 are located at a high position, the user can still easily release the squeezing effect of the pull rod 14 and the pressure plate 15 on the end face of the air duct 2 and the connecting pipe 5 by turning the sleeve, thus facilitating the user's disassembly.

[0024] like Figure 4As shown, the surface of the connecting ring 16 has a plurality of evenly arranged through holes 18; a push rod 19 is slidably connected to the through hole 18; a connecting pipe 20 is slidably connected to the end of the push rod 19 away from the docking ring 12, and the connecting pipe 20 is fixedly connected to the air guide pipe 2; a pressure rod 21 is slidably connected to the end of the connecting pipe 20 away from the push rod 19, and the pressure rod 21 is fixedly connected to the connecting ring 16; the connecting pipe 20 is U-shaped, and its interior, between the pressure rod 21 and the push rod 19, is filled with hydraulic oil; during operation, when the user screws on the sleeve 17 to move the connecting ring 16 away from the dust collector 3, the connection... Ring 16 will also squeeze the pressure rod 21, thereby pressing the pressure rod 21 against the connecting pipe 20. At this time, the pressure rod 21 will transmit the pressure to the push rod 19 through the hydraulic oil in the connecting pipe 20. The push rod 19 will then move along the through hole 18 toward the mating ring 12 on the end face of the air guide pipe 2 and squeeze the mating ring 12, so that the pressure plate 15 on the end face of the connecting rod 14 can be pressed tightly together by the push rod 19 and the pressure plate 15 respectively, thereby improving the sealing between the two and ensuring the stability of the negative pressure of the connecting pipe 5 and the air guide pipe 2, thus enabling more efficient suction of dust from the housing 1.

[0025] like Figure 4 As shown, multiple evenly arranged connecting plates 22 are fixedly connected to the side surface of the connecting ring 16; the multiple connecting plates 22 are slidably connected to a limiting ring 23; a steel wire rope 24 is fixedly connected to the outer side of the limiting ring 23; the end of the steel wire rope 24 away from the limiting ring 23 is fixedly connected to the pull rod 14; during operation, after the sleeve 17 drives the connecting ring 16 to move towards the housing 1, the user can slide the limiting ring 23 to move it towards the housing 1. During the movement of the limiting ring 23, the limiting ring 23 will pull the steel wire rope 24, and the steel wire rope 24 will then pull the pull rod 14, causing the pull rod 14 to move away from the locking mechanism. The movement of the groove 13 eliminates the need for the user to rotate each lever 14 individually, simplifying the user's operation. When the user needs to re-engage the lever 14 into the groove 13, the user moves the limiting ring 23 towards the dust collection box 3. At this time, the inner side of the limiting ring 23 can press the lever 14, causing the lever 14 to move towards the groove 13, thus engaging all levers 14 into the groove 13. Therefore, engaging and disengaging the lever 14 into the groove 13 can be achieved through the movement of the limiting groove, further simplifying the user's operation and improving the usability of this embodiment of the invention.

[0026] like Figure 4As shown, baffles 25 are fixedly connected to both ends of the limiting plate; springs 26 are fixedly connected between the two baffles 25 and the limiting ring 23; during operation, when the user no longer moves the limiting plate, the springs 26 at the baffles 25 on both sides will apply the same pressure to the limiting plate, so that the limiting plate is at the connecting ring 16, thus neither pulling the steel wire rope 24 nor restricting the pull rod 14 from rotating away from the air pipe 2, thereby preventing the limiting plate from sliding at will and affecting the user's normal adjustment of the pull rod 14.

[0027] like Figure 3 , Figure 6 , Figure 7 and Figure 2 As shown, the dust collector 3 is provided with a top cover 27; the fan 6 is fixedly connected to the top surface of the top cover 27, and the top cover 27 and the dust collector 3 are fixed together by bolts; a support rod 28 is slidably connected inside the dust collector 3, and the support rod 28 is located at the bottom of the filter bag 10; a traction rope 29 is installed at both ends of the support rod 28; the ends of the two traction ropes 29 away from the support rod 28 are fixedly connected to a handle 30; a pair of through holes 31 are opened on the surface of the partition 7. Two traction ropes 29 pass through two through holes 31 respectively. When the user needs to replace the filter bag 10, the user needs to first disconnect the connection between the connecting pipe 5 and the air duct 2, and then drive the dust collection box 3 to descend through the threaded column 11. After that, the user removes the bolts used to fix the top cover 27 and the dust collection box 3, and removes the top cover 27. Then the user pulls the handle 30, which pulls the traction rope 29, and the traction rope 29 pulls the support rod 28, so that the support rod 28 rises along the dust collection box 3, thereby lifting the filter bag 10 and the support frame 9 at the top of the support rod 28 to rise along the mounting hole 8, and finally push the filter bag 10 and the support frame 9 out of the mounting hole 8, so that the user can take out the filter bag 10 and the support frame 9, and thus make it convenient for the user to replace the filter bag 10 on the surface of the support frame 9.

[0028] like Figure 3 , Figure 5 , Figure 7 and Figure 8As shown, a backing plate 32 is fixedly connected to the inner wall of the top cover 27 on the side away from the housing 1; a support column 33 is fixedly connected to the bottom of the backing plate 32 on the top surface of the partition 7; a sliding rod 34 is slidably connected to the top surface of the support column 33; a guide wheel 35 is rotatably connected to the top surface of the sliding rod 34; a pair of springs 36 are fixedly connected between the sleeve rod and the partition 7; during operation, when the top cover 27 is removed from the top of the dust collector 3, the backing plate 32 no longer presses the guide wheel 35. At this time, the springs 36 will lift the sliding rod 34 from the top of the support column 33, and make the top of the guide wheel 35 protrude from the top of the dust collector 3. Then, when the user pulls the handle 30 and the traction rope 29, the traction rope 29 can be placed on the top surface of the guide rail 4 instead of the edge of the dust collector 3, thereby reducing the friction force on the traction rope 29 when it is pulled, reducing wear on the traction rope 29, and extending its service life.

[0029] like Figure 5 , Figure 8 and Figure 9 As shown, a rotating rod 37 is rotatably connected to the inner wall of the dust collector 3 on the side away from the shell 1; the rotating rod 37 is located on the top surface of the partition 7 and passes through the dust collector 3; a gear 38 is fixedly connected to the surface of the rotating rod 37; a pair of toothed plates 39 are meshed with the surface of the gear 38, and the toothed plates 39 are slidably connected to the inner wall of the dust collector 3; each of the two toothed plates 39 is fixedly connected to a plug rod 40 at one end away from each other; a plug hole 41 is opened on the surface of the support column 33 near the top, and the plug hole 41 is adapted to the plug rod 40; during operation, when After the guide wheel 35 protrudes from the top of the dust collection box 3, the user needs to turn the rotating rod 37, which drives the gear 38 to rotate. The gear 38 then drives the two toothed plates 39 to move toward the slide bars 34 on both sides, and inserts the insertion rod 40 on the end face of the toothed plate 39 into the insertion hole 41 on the surface of the slide bar 34, thereby restricting the movement of the slide bar 34. At this time, the traction rope 29 rests on the top surface of the guide wheel 35. When the user pulls the guide wheel 35, the guide wheel 35 will not float up and down due to the pressure of the traction rope 29, thus preventing the user from pulling the traction rope 29.

[0030] like Figure 8 and Figure 10As shown, both ends of the handle 30 are rotatably connected to rotating tubes 42; a block 43 is fixedly connected to the surface of the rotating tube 42, and the block 43 is conical; the traction rope 29 is fixedly attached to the surface of the rotating tube 42, and the traction rope 29 passes through the block 43, and the block 43 is made of rubber; during operation, when the user reinstalls the cloth bag 10 and the support frame 9 into the mounting hole 8, the cloth bag 10 and the support frame 9 will squeeze the support rod 28, causing it to move back to the bottom of the dust collection box 3, and pull the handle 30 at the end of the traction rope 29 back to the partition 7. At this time, the user needs to insert the block 43 at the rotating tube 42 into the through hole 31 on the surface of the partition 7, thereby sealing the through hole 31 and ensuring that the dust at the bottom of the partition 7 is not directly sucked to the top of the partition 7 through the through hole 31, thus preventing some dust from being directly discharged to the outside by the fan 6, thereby causing air pollution.

[0031] like Figure 3 and Figure 11 As shown, a support rod 44 is fixedly connected to one side of the top cover 27; a sleeve 45 is slidably connected to the bottom of the support rod 44; the sleeve 45 is fixedly connected to the surface of the dust collection box 3; a vertical groove 46 and a horizontal groove 47 are formed on the surface of the sleeve 45, and the horizontal groove 47 is located at the top of the vertical groove 46; a limiting post 48 is fixedly connected to the surface of the support rod 44, and the limiting post 48 is adapted to the vertical groove 46 and the horizontal groove 47; during operation, after the user removes the bolts between the top cover 27 and the dust collection box 3, the user needs to first pull the support rod 44 upwards. At this time, the limiting post 48 will rise along the vertical groove 46 under the action of the support rod 44, and then the user can rotate the support rod 44 to release the bolts. The support rod 44 drives the limiting post 48 to slide along the horizontal groove 47, thereby allowing the top cover 27 to be completely removed from the top of the dust collector 3. When reinstalling the top cover 27 back onto the top surface of the dust collector 3, the user only needs to rotate the support rod 44 to move the limiting post 48 on its surface from the horizontal groove 47 to the vertical groove 46. Then the user can rotate the top cover 27 and reattach it to the top surface of the dust collector 3. Thus, the user does not need to place the removed top cover 27 on the ground each time it is removed, thereby avoiding the need for the user to lift the heavy fan 6 and the top cover 27 each time the top cover 27 is installed, and thus reducing the difficulty of operation for the user.

[0032] To avoid using bends in the pipes during operation, minimize the use of bends in the dust removal device, and ensure suction efficiency, this embodiment of the invention can be used. First, when the shot blasting machine is working, the dust generated by the shot blasting machine will concentrate inside the shell 1. Then, the fan 6 starts and draws in the dust collection box 3, creating a negative pressure state inside the dust collection box 3. Since the air guide pipe 2 is connected via the connecting pipe 5, it will also be under negative pressure. Therefore, the air guide pipe 2 can draw in the dust inside the shell 1. After the dust is drawn into the dust collection box 3, the filter bags 10 on the surface of the support frame 9 will filter the dust, leaving the dust on the outside of the filter bags 10, while clean gas passes through the filter bags 10 and enters the filter bags. The dust is drawn into the interior of the housing 10 and discharged from the top fan 6, thus completing the entire dust purification process. Since the motor 2 can lift and lower the dust collection box 3 through the threaded column 11, the dust collection box 3 can be lifted to a position close to the top of the housing 1 when it is working. At this time, the air guide pipe 2 and the connecting pipe 5 can be connected to form a complete straight pipe, so there are no too many 90-degree bends. This not only reduces the dust accumulation caused by too many bends, but also ensures the air intake of the air guide pipe 2 and the connecting pipe 5, thereby ensuring the suction force inside the housing 1, thereby improving the suction effect of dust-containing air, and further reducing air pollution and dust leakage.

[0033] When the user connects the air duct 2 to the connecting pipe 5, the user needs to rotate the pull rod 14 to engage it with the grooves 13 on the surfaces of the two mating rings 12. Then, the user screws on the sleeve 17, causing the pull rod 14 to move away from the dust collector 3. At this point, the pressure plate 15 at the end of the pull rod 14 presses against the surface of the mating rings 12, thus pressing the mating ring 12 on the end face of the air duct 2 against the mating ring 12 on the end face of the connecting pipe 5, thereby completing the connection between the connecting pipe 5 and the air duct 2. When it is necessary to disconnect the connecting pipe... When connecting the air duct 2 and the connecting pipe 5, the user only needs to turn the sleeve 17 to move the connecting ring 16 towards the dust collector 3. At this time, the pressure plate 15 at the end of the pull rod 14 is no longer pressed tightly against the surface of the docking ring 12. Then, the user can rotate the pull rod 14 to disengage it from the slot 13, thereby disconnecting the air duct 2 from the connecting pipe 5. Thus, the user only needs to turn the sleeve 17 and rotate the pull rod 14 to complete the docking and disconnection between the air duct 2 and the connecting pipe 20, thereby reducing the difficulty for the user to connect the two.

[0034] When the user screws on the sleeve 17 to move the connecting ring 16 away from the dust collector 3, the connecting ring 16 will also squeeze the pressure rod 21, thereby pressing the pressure rod 21 against the connecting pipe 20. At this time, the pressure rod 21 will transmit the pressure to the top rod 19 through the hydraulic oil in the connecting pipe 20. The top rod 19 will then move along the through hole 18 toward the mating ring 12 on the end face of the air guide pipe 2 and squeeze the mating ring 12, so that the pressure plate 15 on the end face of the connecting rod 14 can be pressed tightly together by the top rod 19 and the pressure plate 15 respectively, thereby improving the sealing between the two and ensuring the stability of the negative pressure of the mating pipe 5 and the air guide pipe 2, thus enabling more efficient suction of dust from the housing 1.

[0035] After the sleeve 17 moves the connecting ring 16 toward the housing 1, the user can slide the limiting ring 23 to move it toward the housing 1. During the movement of the limiting ring 23, the limiting ring 23 will pull the wire rope 24, which in turn will pull the pull rod 14, causing the pull rod 14 to move away from the slot 13. Thus, the user does not need to rotate the pull rod 14 one by one, thereby simplifying the user's operation. When the user needs to re-engage the pull rod 14 into the slot 13, the user moves the limiting ring 23 toward the dust collector 3. At this time, the inner side of the limiting ring 23 can squeeze the pull rod 14, causing the pull rod 14 to move toward the slot 13, thereby engaging all the pull rods 14 into the slot 13. Thus, the engagement and disengagement of the pull rod 14 into the slot 13 can be achieved through the movement of the limiting ring, thereby further simplifying the user's operation and improving the usability of the embodiment of the present invention.

[0036] When the user stops moving the limiting plate, the springs 26 at the baffles 25 on both sides will apply the same pressure to the limiting plate, so that the limiting plate is at the connecting ring 16. This will prevent the steel wire rope 24 from being pulled and the pull rod 14 from rotating away from the air pipe 2, thus preventing the limiting plate from sliding randomly and affecting the user's normal adjustment of the pull rod 14.

[0037] When the user needs to replace the filter bag 10, the user first needs to disconnect the connection between the connecting pipe 5 and the air duct 2, and then drive the dust collection box 3 to descend through the threaded column 11. After that, the user removes the bolts used to fix the top cover 27 and the dust collection box 3, and removes the top cover 27. Then the user pulls the handle 30, which pulls the traction rope 29, and the traction rope 29 pulls the support rod 28, so that the support rod 28 rises along the dust collection box 3, thereby lifting the filter bag 10 and the support frame 9 at the top of the support rod 28 to rise along the mounting hole 8, and finally push the filter bag 10 and the support frame 9 out of the mounting hole 8, so that the user can easily take out the filter bag 10 and the support frame 9, thus making it convenient for the user to replace the filter bag 10 on the surface of the support frame 9.

[0038] Once the top cover 27 is removed from the top of the dust collection box 3, the abutment 32 will no longer press against the guide wheel 35. At this time, the spring 36 will lift the slide bar 34 from the top of the support column 33, causing the top of the guide wheel 35 to protrude from the top of the dust collection box 3. After that, when the user pulls the handle 30 and the traction rope 29, the traction rope 29 can be placed on the top surface of the guide rail 4 instead of the edge of the dust collection box 3, thereby reducing the friction force on the traction rope 29 when it is pulled, reducing wear on the traction rope 29, and extending its service life.

[0039] After the guide wheel 35 protrudes from the top of the dust collection box 3, the user needs to turn the rotating rod 37, which drives the gear 38 to rotate. The gear 38 then drives the two toothed plates 39 to move toward the slide bars 34 on both sides, and inserts the insertion rod 40 on the end face of the toothed plate 39 into the insertion hole 41 on the surface of the slide bar 34, thereby restricting the movement of the slide bar 34. At this time, the traction rope 29 rests on the top surface of the guide wheel 35. When the user pulls the guide wheel 35, the guide wheel 35 will not float up and down due to the pressure of the traction rope 29, thus preventing the user from pulling the traction rope 29.

[0040] When the user reinstalls the cloth bag 10 and support frame 9 into the mounting hole 8, the cloth bag 10 and support frame 9 will squeeze the support rod 28, causing it to move back to the bottom of the dust collection box 3, and pull the handle 30 at the end of the traction rope 29 back to the partition 7. At this time, the user needs to insert the plug 43 at the rotating tube 42 into the through hole 31 on the surface of the partition 7 to seal the through hole 31, thereby ensuring that the dust at the bottom of the partition 7 will not be directly sucked to the top of the partition 7 through the through hole 31, thus preventing some dust from being directly discharged to the outside by the fan 6, thereby causing air pollution.

[0041] After the user removes the bolts between the top cover 27 and the dust collection box 3, the user needs to first pull the support rod 44 upwards. At this time, the limiting post 48 will rise along the vertical groove 46 under the action of the support rod 44. Then the user rotates the support rod 44, which drives the limiting post 48 to slide along the horizontal groove 47. In this way, the top cover 27 can be completely removed from the top of the dust collection box 3. When reinstalling the top cover 27 back onto the top surface of the dust collection box 3, the user only needs to rotate the support rod 44 to move the limiting post 48 on its surface from the horizontal groove 47 to the vertical groove 46. Then the user can turn the top cover 27 and re-attach it to the top surface of the dust collection box 3. Thus, the user does not need to place the removed top cover 27 on the ground each time it is removed, thereby avoiding the need for the user to lift the heavy fan 6 and the top cover 27 each time the top cover 27 is installed, and thus reducing the difficulty of operation for the user.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly dust removal device for shot blasting machines, characterized in that: The device includes a housing; an air duct is fixedly connected inside the housing and located at the top of the housing; a dust collection box is located at the end of the air duct away from the housing; a pair of guide rails are fixedly connected to the side of the housing near the dust collection box, and the dust collection box is slidably connected to the guide rails; a connecting pipe is fixedly connected to the surface of the dust collection box at the corresponding position of the air duct; the connecting pipe and the air duct are fixedly connected together by a connecting assembly; a fan is fixedly connected to the top surface of the dust collection box, and the fan is driven by a motor; a partition is fixedly connected inside the dust collection box; mounting holes are opened on the surface of the partition; a support frame is inserted into the mounting holes; a cloth bag is fitted on the surface of the support frame; a threaded post is threadedly connected to the bottom of the dust collection box, away from the housing, and the threaded post is driven by a motor.

2. The environmentally friendly dust removal device for shot blasting machines according to claim 1, characterized in that: The connecting assembly includes a pair of mating rings; the two mating rings are respectively fixed to the mating pipe and the air guide pipe at their respective close ends; each mating ring has multiple evenly arranged slots on its side; a pull rod is provided in each slot; a pressure plate is fixed to the side of the pull rod near the dust collector; a connecting ring is rotatably connected to the end of the pull rod away from the pressure plate; the connecting ring is slidably connected to the air guide pipe; a sleeve is rotatably connected to the inner side of the connecting ring; the sleeve is threadedly connected to the air guide pipe.

3. The environmentally friendly dust removal device for shot blasting machines according to claim 2, characterized in that: The surface of the connecting ring has a plurality of evenly spaced through holes; a push rod is slidably connected to the through hole; a connecting pipe is slidably connected to the end of the push rod away from the connecting ring, and the connecting pipe is fixedly connected to the air guide pipe; a pressure rod is slidably connected to the end of the connecting pipe away from the push rod, and the pressure rod is fixedly connected to the connecting ring; the connecting pipe is U-shaped, and the interior between the pressure rod and the push rod is filled with hydraulic oil.

4. The environmentally friendly dust removal device for shot blasting machines according to claim 3, characterized in that: Multiple evenly arranged connecting plates are fixed to the side surface of the connecting ring; the multiple connecting plates are slidably connected to the limiting ring; a steel wire rope is fixed to the outside of the limiting ring; the end of the steel wire rope away from the limiting ring is fixed to the pull rod.

5. The environmentally friendly dust removal device for shot blasting machines according to claim 4, characterized in that: Both ends of the limiting plate are fixedly connected to baffles; a spring is fixedly connected between the two baffles and the limiting ring.

6. The environmentally friendly dust removal device for shot blasting machines according to claim 1, characterized in that: The dust collector is provided with a top cover; the fan is fixed to the top surface of the top cover, and the top cover and the dust collector are fixed together by bolts; a support rod is slidably connected inside the dust collector, and the support rod is located at the bottom of the filter bag; a traction rope is installed at both ends of the support rod; the ends of the two traction ropes away from the support rod are fixed together with a handle; a pair of through holes are opened on the surface of the partition, and the two traction ropes pass through the two through holes respectively.

7. The environmentally friendly dust removal device for a shot blasting machine according to claim 6, characterized in that: A backing plate is fixedly connected to the inner wall of the top cover on the side away from the shell; a support column is fixedly connected to the bottom of the backing plate on the top surface of the partition plate; a sliding rod is slidably connected to the top surface of the support column; a guide wheel is rotatably connected to the top surface of the sliding rod; a pair of springs are fixedly connected between the sleeve rod and the partition plate.

8. The environmentally friendly dust removal device for a shot blasting machine according to claim 7, characterized in that: A rotating rod is rotatably connected to the inner wall of the dust collector away from the shell; the rotating rod is located on the top surface of the partition and passes through the dust collector; a gear is fixedly connected to the surface of the rotating rod; a pair of toothed plates are meshed with the surface of the gear and are slidably connected to the inner wall of the dust collector; each of the two toothed plates is fixedly connected to a plug at one end away from each other; an insertion hole is opened on the surface of the support column near the top position, and the insertion hole is adapted to the plug.

9. The environmentally friendly dust removal device for a shot blasting machine according to claim 8, characterized in that: Both ends of the handle are rotatably connected to rotating tubes; a block is fixedly connected to the surface of the rotating tube, and the block is cone-shaped; the traction rope is fixedly attached to the surface of the rotating tube, and the traction rope passes through the block.

10. The environmentally friendly dust removal device for a shot blasting machine according to claim 6, characterized in that: A support rod is fixedly connected to one side of the top cover; a sleeve is slidably connected to the bottom of the support rod; the sleeve is fixedly connected to the surface of the dust collector box; a vertical groove and a horizontal groove are opened on the surface of the sleeve, and the horizontal groove is located at the top of the vertical groove; a limiting post is fixedly connected to the surface of the support rod, and the limiting post is adapted to the vertical groove and the horizontal groove.

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