Steel grit dust separation device

Abstract

The application discloses a steel sand dust separating device, relates to the technical field of steel sand dust separation, and comprises a negative pressure box, the side of the negative pressure box is provided with a square pipeline, the inside of the negative pressure box is provided with a spraying assembly, the inside of the square pipeline is provided with a moving assembly, the moving assembly is provided with a rotating assembly, and the rotating assembly is provided with an adjusting assembly; the moving assembly comprises a square frame, installation grooves are formed in the upper and lower surfaces and the left and right sides of the square frame, fixed electromagnets are embedded in the installation grooves, the application can effectively reduce the situation that the slag and fine steel sand of steel sand are sucked into the inside of equipment, avoid the situation that the slag and fine steel sand of steel sand cause abrasion and damage to the inner wall of equipment and internal parts, can clean the inner wall of the pipeline after work is completed, avoid the influence of the circulation of air flow on the separation effect of steel sand dust, and can self-adaptively adjust the separation capacity of steel sand dust according to the dust concentration in a sand blasting room.

Description

Technical Field

[0001] This invention relates to the field of steel shot dust separation technology, specifically to a steel shot dust separation device. Background Technology

[0002] In the production and processing of some workpieces, shot blasting is required to treat the surface of the workpieces in order to remove impurities such as oxide scale and improve the quality of the workpieces. Shot blasting is generally carried out in a sandblasting room. However, a lot of dust is generated during the shot blasting process, and steel shot residue and debris are also mixed in with the dust.

[0003] Patent application number 2016104907638 discloses a fully automatic steel shot and dust separation and recovery device, connected to the outside of a sandblasting room. It includes a right-angle connector, a flared pipe, a T-pipe, two dust collection hoods, and a control box, all sequentially fixed to the sandblasting room. The inner wall of the right-angle connector is equipped with an anti-collision structure, which includes a grid-like anti-collision layer and a flexible anti-collision layer. Each dust collection hood has a fan power unit at its top and a dust collection bag at its bottom. The bottom of each dust collection hood has an inverted conical structure. Each fan power unit is also connected to the control box. However, during use, dust and residue easily adhere to the inner wall of the pipe, affecting the airflow within the pipe after prolonged use, thus impacting the steel shot and dust separation effect, and making cleaning inconvenient.

[0004] Furthermore, during shot blasting, the impact of steel shot with the workpiece generates a lot of debris. After the debris and fine steel shot are sucked into the separation equipment, they will cause wear and damage to the internal components and the inner wall of the equipment, affecting the service life of the equipment. In addition, the separation capacity of steel shot dust cannot be adaptively adjusted according to the dust concentration in the sandblasting room. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the existing equipment and provide a steel shot dust separation device that can effectively reduce the intake of steel shot fragments and fine steel shot into the equipment, avoid wear and damage to the inner wall and internal components of the equipment caused by steel shot fragments and fine steel shot, and clean the inner wall of the pipe after the work is completed to avoid affecting the airflow and thus the steel shot dust separation effect. Furthermore, the separation capacity of steel shot dust can be adaptively adjusted according to the dust concentration in the sandblasting room, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a steel shot dust separation device, comprising a negative pressure box, a square pipe provided on the side of the negative pressure box, a spray assembly provided inside the negative pressure box, a moving assembly provided inside the square pipe, a rotating assembly provided on the moving assembly, and an adjusting assembly provided on the rotating assembly;

[0007] The moving component includes a square frame. Mounting slots are correspondingly provided on the top and bottom surfaces and the left and right sides of the square frame. A fixed electromagnet is embedded in each mounting slot. A set of guide slots communicating with the mounting slots are provided on the top and bottom surfaces of the square frame. Each set of guide slots is symmetrically located on both sides of the square frame surface. A metal slide block is slidably connected within each guide slot. One end of each metal slide block extends to the outside of the guide slot. A second rotating shaft is rotatably connected between the ends of two corresponding metal slide blocks in the horizontal direction. Second rollers are symmetrically provided on both sides of the second rotating shaft. After the fixed electromagnet loses its magnetism, the moving component utilizes the contact between the second rollers and the inner wall of the square pipe, and under the negative pressure within the negative pressure box, the square frame can move inside the square pipe.

[0008] The rotating assembly includes a drive box located at the center of the square frame. Fixed shafts are symmetrically rotatably connected to both sides of the drive box. Side plates are provided at the ends of the fixed shafts that are far apart from each other. A cleaning electromagnet is embedded in the side plate. The cleaning electromagnet can attract the steel sand and fine steel sand by using the magnetism of the cleaning electromagnet located at the port of the square pipe during the process of dust, steel sand fragments and fine steel sand entering the square pipe. This allows the steel sand and fine steel sand to be separated before entering the square pipe and facilitates the recycling of steel sand and fine steel sand.

[0009] The adjustment assembly includes a top shaft with a movable bevel gear at its bottom end. Fixed bevel gears that mesh with the movable bevel gear are symmetrically arranged at opposite ends of the fixed shafts on both sides. The adjustment assembly can rotate the movable bevel gear by rotating the top shaft. The movable bevel gear can drive the fixed shafts on both sides to rotate in opposite directions by meshing with the fixed bevel gears on both sides, thereby adjusting the side plate.

[0010] Preferably, the top of the negative pressure box is provided with an exhaust pipe and an exhaust fan. The input port of the exhaust fan is connected to the end of the exhaust pipe away from the negative pressure box. The bottom of the negative pressure box has a conical structure, and a collection bucket is provided at the bottom of the negative pressure box. The exhaust fan creates a negative pressure state inside the negative pressure box by drawing air, and then the dust can be drawn into the negative pressure box through a square pipe and finally collected in the collection bucket.

[0011] Preferably, a fixing plate is provided at the end of the square pipe away from the negative pressure box. Multiple sets of bolt holes are evenly opened on the side of the fixing plate, and the fixing plate is connected to the side wall of the external sandblasting room through bolts. The fixing plate is used to install and fix on the side wall of the sandblasting room.

[0012] Preferably, the spray assembly includes an installation pipe that extends through both sides of the negative pressure box. Spray nozzles are evenly distributed at the bottom of the installation pipe. The installation pipe is perpendicular to the central axis of the square pipe. One end of the installation pipe is rotatably connected to a water inlet pipe, which is connected to the output end of an external water pump. The external water supply system pressurizes water and pumps it into the water inlet pipe, which then enters the installation pipe and is sprayed out through the spray nozzles, thereby reducing dust entering the negative pressure box and facilitating dust collection.

[0013] Preferably, the negative pressure box is provided with a support on its side, and a rotating motor is provided on the support. The output shaft of the rotating motor is fixedly connected to the other end of the mounting tube. The rotating motor drives the mounting tube to rotate within the range of 0°-180°, which can adjust the angle of the nozzle.

[0014] Preferably, the frame is made of magnetically shielding material, and the two sides of the frame away from the negative pressure box are symmetrically provided with side seats. The side seats are rotatably connected to a first rotating shaft, and the first rotating shaft is provided with a first roller. The circumferential surfaces of the first rollers on both sides are respectively in contact with the inner sides of the square pipe. The contact between the first rollers and the inner wall of the square pipe can realize the limiting support of the two sides of the frame.

[0015] Preferably, the second roller has the same specifications as the first roller, and the upper and lower second rollers on both sides respectively fit into the upper and lower inner surfaces of the square pipe. The side of the frame is provided with an electromagnetic pin, and the pin of the electromagnetic pin is engaged with a pin hole opened on the outside of the metal slide. A spring is provided between one end of the inside of the metal slide and the fixed electromagnet. The pin of the electromagnetic pin can limit the movement of the metal slide by engaging with the pin hole on the side of the metal slide, thus ensuring the stability of the transmission between the worm gear and the worm.

[0016] Preferably, a dust concentration sensor is provided on the inner bottom surface of the square frame, and a vertical plate is provided on the side of the middle of the square frame away from the second roller. A mounting shaft is rotatably connected to the middle of the vertical plate, and the end of the mounting shaft is fixedly connected to the middle of the side of the drive box. The dust concentration sensor is used to detect the dust concentration entering the square pipe.

[0017] Preferably, the drive box has a drive shaft on the side away from the negative pressure box, and a main bevel gear at the end of the drive shaft. Support plates are provided on the upper and lower sides of the side of the frame, and a transmission shaft is vertically rotatably connected to the end of the support plate. A secondary bevel gear meshing with the main bevel gear is provided in the middle of the transmission shaft. Worms are symmetrically provided at the upper and lower ends of the transmission shaft, and worm wheels meshing with the worms are provided in the middle of the second rotating shafts on both the upper and lower sides. The rotation of the drive box drives the drive shaft to rotate, and the meshing of the main bevel gear and the secondary bevel gear drives the transmission shaft to rotate, which in turn drives the worms on both the upper and lower sides to rotate. The meshing of the worms and worm wheels drives the second rotating shaft to rotate, thereby realizing the rotation of the second roller.

[0018] Preferably, the top shaft is rotatably connected to the inner top surface of the drive box, and the top surface of the drive box is provided with an adjustment motor. The output shaft of the adjustment motor is fixedly connected to the top end of the top shaft, and the rotation of the adjustment motor can provide power for the rotation of the top shaft.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This invention utilizes the magnetism generated by the electromagnet after it is energized. When steel sand fragments and fine steel sand reach the position of the square, the magnetic attraction generated by the electromagnet attracts the steel sand fragments and fine steel sand, preventing them from entering the square pipe and negative pressure box, avoiding wear on the inner wall of the square pipe, and extending its service life.

[0021] 2. When the dust concentration in the sandblasting chamber increases, the present invention can adjust the motor and the meshing of the moving bevel gear and the fixed bevel gear to make the side plates on both sides tilt alternately. Under the action of negative pressure in the negative pressure box, the side plates on both sides rotate. The airflow generated by the rotation of the side plates accelerates the flow rate of dust in the square pipe and increases the suction at the port of the square pipe, thereby improving the separation effect of steel shot and dust. In this way, the separation effect of steel shot and dust can be adaptively adjusted according to the dust concentration in the sandblasting chamber.

[0022] 3. After use, the fixed electromagnet can be de-energized and lose its magnetism, releasing the frame. At the same time, the worm and worm wheel mesh, and the rotation of the side plates and the meshing of the main bevel gear and the secondary bevel gear drive the transmission shaft to rotate, causing the worm to rotate. The second roller is driven to rotate through the second shaft, thus moving the frame. Meanwhile, the fixed electromagnet scrapes away the dust adhering to the inner wall of the square pipe, achieving cleaning of the inner wall of the square pipe. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of the negative pressure box of the present invention;

[0025] Figure 3 This is a schematic diagram of the block structure of the present invention;

[0026] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0027] Figure 5 for Figure 3 Enlarged structural diagram at point B;

[0028] Figure 6 This is a schematic diagram of the cross-sectional structure of the frame of the present invention;

[0029] Figure 7 for Figure 6 Enlarged structural diagram at point C.

[0030] In the diagram: 1. Negative pressure box; 11. Exhaust duct; 12. Exhaust fan; 13. Collection bucket; 14. Square pipe; 15. Fixing plate; 2. Spray assembly; 21. Mounting pipe; 22. Spray nozzle; 23. Water inlet pipe; 24. Rotating motor; 3. Moving assembly; 31. Frame; 311. Dust concentration sensor; 32. Mounting slot; 33. Fixing electromagnet; 34. Side seat; 35. First rotating shaft; 36. First roller; 37. Guide groove; 38. Metal slide; 381. Second rotating shaft 382. Shaft; 383. Second roller; 384. Electromagnetic pin; 39. Spring; 4. Rotating assembly; 41. Vertical plate; 42. Mounting shaft; 43. Drive box; 44. Fixed shaft; 45. Side plate; 46. Cleaning electromagnet; 47. Drive shaft; 48. Main bevel gear; 49. Support plate; 491. Transmission shaft; 492. Secondary bevel gear; 493. Worm; 494. Worm wheel; 5. Adjusting assembly; 51. Top shaft; 52. Moving bevel gear; 53. Adjusting motor; 54. Fixed bevel gear. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] First Embodiment

[0033] Please see Figure 1-2This embodiment provides a technical solution: a steel shot dust separation device, including a negative pressure box 1, a square pipe 14 on the side of the negative pressure box 1, and a spray assembly 2 inside the negative pressure box 1. The spray assembly 2 includes an installation pipe 21 that runs through both sides of the negative pressure box 1. Spray nozzles 22 are evenly distributed at the bottom of the installation pipe 21. The installation pipe 21 is perpendicular to the central axis of the square pipe 14. One end of the installation pipe 21 is rotatably connected to a water inlet pipe 23, which is connected to the output end of an external water pump. Specifically, the external water supply system pressurizes water and pumps it into the water inlet pipe 23, then into the installation pipe 21 and sprays it out through the spray nozzles 22, thereby reducing dust entering the negative pressure box 1 and facilitating dust collection.

[0034] The top of the negative pressure box 1 is equipped with an exhaust pipe 11 and an exhaust fan 12. The input port of the exhaust fan 12 is connected to the end of the exhaust pipe 11 away from the negative pressure box 1. The bottom of the negative pressure box 1 has a conical structure. The bottom of the negative pressure box 1 is equipped with a collection bucket 13. Specifically, the exhaust fan 12 draws air to make the inside of the negative pressure box 1 into a negative pressure state, and then the dust can be drawn into the negative pressure box 1 through the square pipe 14, and finally enters the collection bucket 13 for collection.

[0035] A fixing plate 15 is provided at the end of the square pipe 14 away from the negative pressure box 1. Multiple sets of bolt holes are evenly opened on the side of the fixing plate 15, and the fixing plate 15 is connected to the side wall of the external sandblasting room through bolts. Specifically, the fixing plate 15 is used to install and fix on the side wall of the sandblasting room to connect the square pipe 14 with the through groove opened on the side wall of the sandblasting room.

[0036] In this embodiment, the device is first connected to the through-slot on the side wall of the shot blasting chamber via the fixed plate 15 at the end of the square pipe 14. When the workpiece is shot blasted, the blower 12 is started, and the negative pressure box 1 is made into a negative pressure state through the blower pipe 11. At the same time, the external water supply system pumps water into the installation pipe 21 after pressurization through the water pump, and sprays it into the negative pressure box 1 through the nozzle 22. Under the negative pressure in the negative pressure box 1, the dust generated during the shot blasting process is sucked into the negative pressure box 1 through the square pipe 14. At the same time, the sprayed water mixes with the dust in the negative pressure box 1, thereby achieving the purpose of dust reduction. The combination of dust and water finally falls into the collection bucket 13 for collection, thereby realizing the separation of dust and steel shot in the shot blasting chamber.

[0037] Second Embodiment

[0038] Please see Figure 1-7Based on the steel shot dust separation device provided in the first embodiment, in actual use, during shot blasting, the impact of steel shot with the workpiece generates a lot of debris, and the steel shot also contains a lot of fine steel shot. The fine steel shot and steel shot debris are sucked into the square pipe 14 along with the dust, causing wear on the inner wall of the square pipe 14 and affecting its service life. Furthermore, after prolonged use, a lot of dust adheres to the inner walls of the square pipe 14 and the negative pressure box 1, affecting the airflow inside the square pipe 14 and thus affecting the separation effect of steel shot and dust. It is also inconvenient to clean the dust inside the square pipe 14 and the negative pressure box 1, and it cannot adaptively adjust according to the dust concentration in the sandblasting chamber, resulting in a reduced separation effect of steel shot and dust when the dust concentration in the sandblasting chamber is high. To solve the above problems:

[0039] The inside of the square pipe 14 is provided with a moving component 3, the moving component 3 is provided with a rotating component 4, and the rotating component 4 is provided with an adjusting component 5.

[0040] The movable component 3 includes a frame 31. Mounting slots 32 are correspondingly formed on the upper and lower surfaces and the left and right sides of the frame 31. A fixed electromagnet 33 is embedded within each mounting slot 32. A set of guide grooves 37 communicating with the mounting slots 32 are formed on the upper and lower surfaces of the frame 31, respectively. Each set of guide grooves 37 is symmetrically formed on both sides of the surface of the frame 31. A metal slide block 38 is slidably connected within the guide groove 37, with one end of the metal slide block 38 extending to the outside of the guide groove 37. A second rotating shaft 381 is rotatably connected between the ends of two corresponding metal slide blocks 38 in the horizontal direction. Second rollers 382 are symmetrically arranged on both sides of the second rotating shaft 381. The frame 31 is made of a magnetically blocking material and is located away from the negative pressure box 1. A side seat 34 is symmetrically provided on both sides of one side. A first rotating shaft 35 is rotatably connected to the side seat 34. A first roller 36 is provided on the first rotating shaft 35. The circumferential surfaces of the first rollers 36 on both sides are respectively in contact with the inner sides of the square pipe 14. Specifically, the frame 31 is made of magnetic shielding material, which can avoid the magnetic force of the fixing electromagnet 33 and the magnetic force of the cleaning electromagnet 46 from interfering with each other. After the fixing electromagnet 33 loses its magnetism, the moving component 3 can move the frame 31 inside the square pipe 14 by using the contact of the second roller 382 with the inner wall of the square pipe 14 and the negative pressure in the negative pressure box 1. The contact of the first roller 36 with the inner wall of the square pipe 14 realizes the limiting support of the two sides of the frame 31.

[0041] The second roller 382 has the same specifications as the first roller 36, and the upper and lower rollers 382 on both sides are respectively attached to the upper and lower surfaces of the inside of the square pipe 14. The side of the frame 31 is provided with an electromagnetic pin 383. The pin of the electromagnetic pin 383 is engaged with the pin hole opened on the outside of the metal slide 38. A spring 39 is provided between one end of the inside of the metal slide 38 and the fixed electromagnet 33. Specifically, the pin of the electromagnetic pin 383 can limit the metal slide 38 by engaging with the pin hole on the side of the metal slide 38, so as to ensure the stability of the transmission between the worm gear 494 and the worm 493.

[0042] A dust concentration sensor 311 is provided on the bottom surface of the inner side of the frame 31. A vertical plate 41 is provided on the side of the inner side of the frame 31 away from the second roller 382. A mounting shaft 42 is rotatably connected to the middle of the vertical plate 41. The end of the mounting shaft 42 is fixedly connected to the middle of the side of the drive box 43. Specifically, the dust concentration sensor 311 is used to detect the dust concentration entering the square pipe 14.

[0043] The rotating assembly 4 includes a drive box 43 located at the center of the frame 31. Fixed shafts 44 are symmetrically rotatably connected to both sides of the drive box 43. Side plates 45 are provided at the ends of the fixed shafts 44 that are far apart from each other. A cleansing electromagnet 46 is embedded in each side plate 45. A drive shaft 47 is located on the side of the drive box 43 away from the negative pressure box 1. A main bevel gear 48 is located at the end of the drive shaft 47. Support plates 49 are correspondingly provided on the upper and lower sides of the side of the frame 31. A transmission shaft 491 is vertically rotatably connected to the end of each support plate 49. A secondary bevel gear 492 meshing with the main bevel gear 48 is located in the middle of the transmission shaft 491. Worms 493 are symmetrically provided at the upper and lower ends of the transmission shaft 491, and worm wheels 49 meshing with the worms 493 are located in the middle of the second rotating shafts 381 on both the upper and lower sides. 4. Specifically, the cleaning electromagnet 46 can attract the steel sand fragments and fine steel sand during the process of dust, steel sand fragments, and fine steel sand entering the square pipe 14 using the magnetism of the cleaning electromagnet 46 located at the port of the square pipe 14. This allows the steel sand fragments and fine steel sand to be separated before entering the square pipe 14, facilitating their recycling. More specifically, the rotation of the drive box 43 drives the drive shaft 47 to rotate, which in turn drives the transmission shaft 491 to rotate through the meshing of the main bevel gear 48 and the secondary bevel gear 492. This, in turn, drives the worm gears 493 on both sides to rotate. The worm gears 493 mesh with the worm wheel 494, which in turn drives the second rotating shaft 381 to rotate, thus realizing the rotation of the second roller 382.

[0044] The adjustment assembly 5 includes a top shaft 51, with a movable bevel gear 52 at the bottom end of the top shaft 51. Fixed bevel gears 54 that mesh with the movable bevel gear 52 are symmetrically provided at opposite ends of the fixed shafts 44 on both sides. The top shaft 51 is rotatably connected to the top surface inside the drive box 43. An adjustment motor 53 is provided on the top surface of the drive box 43. The output shaft of the adjustment motor 53 is fixedly connected to the top end of the top shaft 51. Specifically, the adjustment assembly 5 can rotate the movable bevel gear 52 by rotating the top shaft 51. The movable bevel gear 52 can drive the fixed shafts 44 on both sides to rotate in opposite directions by meshing with the fixed bevel gears 54 on both sides, thereby adjusting the side plate 45. The rotation of the adjustment motor 53 can provide power for the rotation of the top shaft 51.

[0045] The negative pressure box 1 is provided with a support on its side, and a rotating motor 24 is provided on the support. The output shaft of the rotating motor 24 is fixedly connected to the other end of the mounting tube 21. Specifically, the rotating motor 24 can drive the mounting tube 21 to rotate, thereby adjusting the angle of the nozzle 22.

[0046] In this embodiment, during initial use, the fixed electromagnet 33 is energized. The fixed electromagnet 33 uses its own magnetism to adhere to the inner wall of the square pipe 14, thus fixing the square frame 31 and preventing it from moving under the action of the first roller 36 and the second roller 382. The metal slide 38 is also attracted by the magnetic force of the fixed electromagnet 33, compressing the spring 39. The worm 493 at the end of the second rotating shaft 381 disengages from the worm wheel 494, meaning the worm 493 and worm wheel 494 are not engaged. Furthermore, the side plates 45 on both sides are in a state similar to... Figure 3 In the horizontal state shown, the cleaning electromagnet 46 is energized. During shot blasting, the blower 12 creates a negative pressure in the negative pressure box 1, while the external water supply system supplies water to the installation pipe 21. Through the nozzle 22, the dust, steel shot fragments, and fine steel shot in the sandblasting room are sucked into the square pipe 14. Since the square frame 31 is located inside the square pipe 14 near the sandblasting room, when the steel shot fragments and fine steel shot reach the position of the square frame 31 under the negative pressure, the cleaning electromagnet 46 uses its own magnetism to attract the steel shot fragments and fine steel shot, thus preventing them from entering the square pipe 14 and avoiding wear on the inner wall of the square pipe 14 and the components inside the negative pressure box 1, thereby extending their service life.

[0047] In addition, when the dust concentration sensor 311 detects a high dust concentration at the box 31, if the components are still in their initial state, the dust will not be able to be separated from the sandblasting chamber in time. Consequently, some dust will settle in the sandblasting chamber and the square pipe 14, reducing the separation effect of steel shot and dust, and also reducing the adsorption effect of the impurity removal electromagnet 46.

[0048] Therefore, when the dust concentration sensor 311 detects that the dust concentration at the box 31 is greater than the threshold set by the dust concentration sensor 311, the regulating motor 53 is started. The regulating motor 53 drives the top shaft 51 to rotate, the top shaft 51 drives the moving bevel gear 52 to rotate, and the moving bevel gear 52 drives the fixed bevel gears 54 on both sides to rotate. In turn, the fixed shafts 44 on both sides cause the side plates 45 on both sides to rotate clockwise and counterclockwise respectively, and the rotation angle is controlled between 0° and 90°. At this time, the state of the side plates 45 on both sides is similar to that of the fan blades. Then, under the negative pressure in the negative pressure box 1, the airflow drives the side plates 45 on both sides to rotate when passing through them. The drive box 43 rotates accordingly. At this time, since the worm gear 493 and the worm wheel 494 are in a separated state, the main bevel gear 48 and the secondary bevel gear 494 are in a separated state. The engagement of 92 only drives the drive shaft 491 to rotate freely, and the impurity removal electromagnet 46 also rotates accordingly, thereby improving the adsorption effect of the impurity removal electromagnet 46 on steel sand fragments and fine steel sand. At the same time, the side plates 45 on both sides, which are staggered and inclined, generate airflow towards the negative pressure box 1 when rotating. Therefore, after the dust enters the square pipe 14, the airflow generated by the rotation of the side plates 45 on both sides can accelerate the flow speed of the dust in the square pipe 14, and at the same time increase the suction at the port of the square pipe 14, preventing the dust from settling inside the sandblasting chamber and affecting the separation effect of steel sand and dust. It also prevents some dust from settling inside the square pipe 14 and avoids more dust adhering to the inner wall of the square pipe 14. Thus, the separation effect of steel sand and dust can be adaptively adjusted according to the dust concentration in the sandblasting chamber.

[0049] However, the airflow generated by the rotation of the side plates 45 that are inclined to each other on both sides will cause the water sprayed from the nozzle 22 to deflect away from the square pipe 14, which will reduce the dust suppression effect in the negative pressure box 1. Therefore, when the side plates 45 are inclined to each other on both sides, the installation pipe 21 is rotated by starting the rotating motor 24, so that the nozzle 22 deflects towards the side closer to the square pipe 14, thereby compensating for the deflection of the sprayed water and avoiding affecting the dust suppression effect in the negative pressure box 1.

[0050] In addition, after use, the induced draft fan 12 is put into operation, and the side plates 45 on both sides are still in an alternating tilted state. At the same time, the fixed electromagnet 33 is de-energized and loses its magnetism, the frame 31 is released from fixation, the pin of the electromagnetic pin 383 retracts, the positioning of the metal slide 38 is released, the compressed spring 39 drives the metal slide 38 to reset, and after the metal slide 38 is reset, the electromagnetic pin 383 is used again to position the metal slide 38, so that the worm gears 493 at the upper and lower ends mesh with the worm wheels 494 on the upper and lower sides respectively. Then, under the action of negative pressure in the negative pressure box 1, the side plates 45 on both sides rotate, driving the drive box 43 to rotate, which drives the main bevel gear 48 to rotate through the drive shaft 47. The main bevel gear 48 drives the secondary bevel gear 492 to rotate, which drives the transmission shaft 491. The rotation of the drive shaft 491 drives the worm gear 493 to rotate, which in turn drives the worm wheel 494 to rotate. The worm wheel 494 drives the second rotating shaft 381 to rotate, which in turn drives the second rollers 382 on both sides to rotate. This allows the frame 31 to move within the square pipe 14. During the movement of the frame 31, the surface of the fixed electromagnet 33 is in contact with the inner wall of the square pipe 14. Therefore, the fixed electromagnet 33 can be used to clean the inner wall of the square pipe 14, scraping off the dust adhering to the inner wall of the square pipe 14. The scraped-off dust is collected into the collection bucket 13 under the negative pressure in the negative pressure box 1. In addition, by rotating the rotating motor 24 in both directions, the nozzle 22 can be driven to swing back and forth, thereby using the sprayed water to rinse the inner wall of the negative pressure box 1, thus cleaning the inner wall of the negative pressure box 1.

[0051] Therefore, this invention utilizes the magnetism generated by the energized electromagnet 46 to attract steel sand fragments and fine steel sand when they reach the position of the square 31. This prevents the steel sand fragments and fine steel sand from entering the square pipe 14 and the negative pressure box 1, avoiding wear on the inner wall of the square pipe 14 and extending its service life. Furthermore, when the dust concentration in the sandblasting chamber increases, this invention adjusts the motor 53 and the meshing of the moving bevel gear 52 and the fixed bevel gear 54 to cause the side plates 45 to tilt alternately. Under the negative pressure in the negative pressure box 1, the side plates 45 rotate, and the airflow generated by the rotation of the side plates 45 accelerates the flow rate of dust in the square pipe 14, while simultaneously increasing the width of the square pipe. The suction force at port 14 improves the separation effect of steel shot and dust. At the same time, the removal electromagnet 46 can improve the adsorption effect of steel shot fragments and fine steel shot as the side plate 45 rotates. In addition, after use, the fixed electromagnet 33 can be de-energized and lose its magnetism to release the fixation of the square frame 31. At the same time, the worm 493 and worm wheel 494 mesh, and the rotation of the two side plates 45 and the meshing of the main bevel gear 48 and the secondary bevel gear 492 drive the transmission shaft 491 to rotate, which in turn drives the worm 493 to rotate. The second roller 382 can then be driven to rotate through the second rotating shaft 381, thereby moving the square frame 31. At the same time, the fixed electromagnet 33 scrapes off the dust attached to the inner wall of the square pipe 14, thus cleaning the inner wall of the square pipe 14.

[0052] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A steel shot dust separation device, characterized in that, The device includes a negative pressure chamber, a square pipe on the side of the negative pressure chamber, a spray assembly inside the negative pressure chamber, a moving assembly inside the square pipe, a rotating assembly on the moving assembly, and an adjusting assembly on the rotating assembly. The movable component includes a frame, on which mounting slots are correspondingly provided on the top and bottom surfaces and the left and right sides. A fixed electromagnet is embedded in the mounting slot. A set of guide slots communicating with the mounting slots are respectively provided on the top and bottom surfaces of the frame. Each set of guide slots is symmetrically provided on both sides of the surface of the frame. A metal slide block is slidably connected in the guide slot. One end of the metal slide block extends to the outside of the guide slot. A second rotating shaft is rotatably connected between the ends of two metal slide blocks that correspond to each other in the horizontal direction. Second rollers are symmetrically provided on both sides of the second rotating shaft. The rotating assembly includes a drive box located at the center of the frame. Fixed shafts are symmetrically rotatably connected to both sides of the drive box. Side plates are provided at the ends of the fixed shafts on both sides that are far apart from each other. Impurity removal electromagnets are embedded in the side plates. The adjustment assembly includes a top shaft, the bottom end of which is provided with a movable bevel gear, and the opposite ends of the fixed shafts on both sides are symmetrically provided with fixed bevel gears that mesh with the movable bevel gear. The negative pressure box is equipped with an exhaust pipe and an exhaust fan at the top. The input port of the exhaust fan is connected to the end of the exhaust pipe away from the negative pressure box. The bottom of the negative pressure box has a conical structure, and a collection bucket is provided at the bottom of the negative pressure box. The drive box has a drive shaft on the side away from the negative pressure box. The end of the drive shaft has a main bevel gear. The upper and lower sides of the side of the frame have corresponding support plates. The ends of the support plates are vertically rotatably connected to a transmission shaft. The middle of the transmission shaft has a secondary bevel gear that meshes with the main bevel gear. The upper and lower ends of the transmission shaft have worm gears symmetrically arranged. The middle of the second rotating shaft on both the upper and lower sides has a worm wheel that meshes with the worm gear. The top shaft is rotatably connected to the inner top surface of the drive box. The top surface of the drive box is equipped with an adjustment motor, and the output shaft of the adjustment motor is fixedly connected to the top end of the top shaft.

2. The steel shot dust separation device according to claim 1, characterized in that: The square pipe is provided with a fixing plate at the end away from the negative pressure box. Multiple bolt holes are evenly opened on the side of the fixing plate, and the fixing plate is connected to the side wall of the external sandblasting room through bolts.

3. The steel shot dust separation device according to claim 1, characterized in that: The spray assembly includes an installation pipe that runs through both sides of the negative pressure box. Spray nozzles are evenly distributed at the bottom of the installation pipe. The installation pipe is perpendicular to the central axis of the square pipe. One end of the installation pipe is rotatably connected to a water inlet pipe, which is connected to the output end of an external water pump.

4. The steel shot dust separation device according to claim 3, characterized in that: The negative pressure box is provided with a support on its side, and a rotating motor is provided on the support. The output shaft of the rotating motor is fixedly connected to the other end of the mounting tube.

5. The steel shot dust separation device according to claim 1, characterized in that: The frame is made of magnetically shielding material. Side seats are symmetrically provided on both sides of the frame away from the negative pressure box. A first rotating shaft is rotatably connected to the side seat. A first roller is provided on the first rotating shaft. The circumferential surfaces of the first rollers on both sides are respectively in contact with the inner sides of the square pipe.

6. The steel shot dust separation device according to claim 5, characterized in that: The second roller has the same specifications as the first roller, and the second rollers on the upper and lower sides respectively fit into the upper and lower surfaces of the inside of the square pipe. The side of the frame is provided with an electromagnetic pin, and the pin of the electromagnetic pin is correspondingly engaged with the pin hole opened on the outside of the metal slide. A spring is provided between one end of the inside of the metal slide and the fixed electromagnet.

7. The steel shot dust separation device according to claim 1, characterized in that: A dust concentration sensor is provided on the bottom inner surface of the frame. A vertical plate is provided on the side of the frame away from the second roller. A mounting shaft is rotatably connected to the middle of the vertical plate. The end of the mounting shaft is fixedly connected to the middle side of the drive box.

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