Dust removal device for production workshop

Abstract

The invention provides a dust removal device for a production workshop, and belongs to the technical field of dust removal devices.The dust removal device for the production workshop comprises a box body and an air inlet located in the lower portion of the box body and further comprises a filtering mechanism, the filtering mechanism comprises a guiding frame installed at the air inlet, and when the filtering mechanism is blocked, the guiding frame is located in the box body; the filtering mechanism can move towards the interior of the box body along the guide frame; the air outlet mechanism comprises flow guide cloth installed on the inner wall of the box body in a surrounding mode, the flow guide cloth is made of elastic materials, and a flow guide opening is formed in the middle of the flow guide cloth. The spraying mechanism comprises a spraying frame which is installed in the box body and can move in the horizontal direction, and a universal mechanism is arranged between the spraying frame and the air outlet mechanism. The filter screen moves to drive the spraying mechanism to be close to and away from the air outlet mechanism so as to prolong the dust removal time of the position and improve the dust removal effect, synchronous adjustment is performed according to the dust at the continuously changing positions in the workshop, and it is guaranteed that the dust is completely removed.

Description

Technical Field

[0001] This invention belongs to the technical field of dust removal devices, specifically relating to a dust removal device for production workshops. Background Technology

[0002] During industrial production, production workshops generate a large amount of dust due to the nature of the processes. This dust not only threatens worker health and affects product quality, but may also cause safety accidents and environmental problems. Dust removal devices used in production workshops are equipment used to capture, separate, and remove dust generated during the production process, thereby improving workshop air quality, protecting worker health, and increasing production efficiency.

[0003] Chinese patent CN113559643B discloses an automated dust removal device for industrial production workshops, comprising a dust collection bin, a spray assembly, an exhaust assembly, and a sealing spherical shell. The spray assembly is slidably connected to the inner wall of the dust collection bin, the exhaust assembly is snap-fitted to the spray assembly, and the sealing spherical shell is rotatably connected to the dust collection bin via a threaded connection. An annular support plate is fixedly connected to the bottom of the dust collection bin, a water tank is fixedly connected to the surface of the annular support plate, a water pump is mounted on the surface of the water tank, and a water inlet pipe is fixedly connected between the water pump and the dust collection bin. A heating plate is located near the bottom of the inner wall of the dust collection bin, a heat insulation plate is located near the bottom of the outer wall of the dust collection bin, and a mounting plate is located on the outer wall of the dust collection bin. A drive motor is fixedly connected to the surface of the mounting plate. It is mainly used for dust removal in production workshops.

[0004] However, the above technical solutions still have the following problems: when removing dust in the production workshop, since the dust is not evenly distributed in the workshop, the dust concentration drawn in by the air inlet at different angles in the dust removal device in the production workshop is significantly different, resulting in uneven dust removal effect at different locations in the dust removal device, and some dust is not completely removed and is carried away from the dust removal device by the airflow. Summary of the Invention

[0005] The purpose of this invention is to provide a dust removal device for production workshops, which aims to solve the problems in the prior art where the concentration of dust entering from different locations in the dust removal device varies, resulting in uneven dust removal effect and incomplete dust removal.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dust removal device for a production workshop, comprising: a housing and an air inlet located below the housing, and further comprising: The filter mechanism is installed on the inner wall of the housing. The filter mechanism includes a guide frame installed at the air inlet. When the filter mechanism is blocked, it can move along the guide frame into the housing. An air outlet mechanism is installed above the filter mechanism. The air outlet mechanism includes a guide cloth that surrounds the inner wall of the housing. The guide cloth is made of elastic material and has a guide port in the middle. The spray mechanism is installed between the filter mechanism and the air outlet mechanism. The spray mechanism includes a spray frame installed inside the housing and capable of moving horizontally. A universal mechanism is provided between the spray frame and the air outlet mechanism, which allows the spray frame to move in the opposite direction to the direction of the guide port. The filter mechanism is equipped with a driving mechanism, which is connected to the air outlet mechanism. When the filter mechanism moves, it can drive the air guide port to move in the same direction.

[0007] Preferably, a guide plate installed on the inner wall of the box is provided below the spray frame. The guide plate is vertically connected in the middle. Part of the water sprayed from the spray frame can flow down along the guide plate. A sliding plate is slidably connected to the bottom of the guide plate. The guide plate is inclined. The sliding plate can slide up and down along the bottom inclined surface of the guide plate. The lower end of the sliding plate is serrated. The pushing mechanism includes an extension plate. The extension plate passes through the guide plate and the sliding plate and extends to the top of the guide plate. The sliding plate is slidably connected to the extension plate. When the guide frame moves away from the air inlet, it drives the sliding plate to move obliquely downwards synchronously until it extends out from the bottom of the guide plate. A guide groove is provided on the guide plate so that the extension plate can slide back and forth along the guide plate.

[0008] Preferably, the inner wall of the guide frame is equipped with a guide frame that can slide back and forth. The guide frame is provided with a first spring for limiting its movement. The two ends of the first spring are respectively connected to the guide frame and the inner wall of the box, so that it is initially located on the side closer to the air inlet. A filter screen is rotatably installed on the guide frame. A rotating shaft is provided at the bottom of the filter screen. A long groove is provided at the bottom of the guide frame. The rotating shaft can move back and forth along the long groove and passes through the long groove to the bottom of the guide frame.

[0009] Preferably, a guide plate that can slide up and down is provided below the guide frame. The guide plate is provided with a positioning hole. The rotating shaft slides up and down in the positioning hole. A spiral groove is provided on the inner wall of the positioning hole along its length direction. A sliding column that matches the spiral groove is provided on the outer wall of the rotating shaft. A lifting plate is slidably connected to the bottom of the guide plate. A first hydraulic cylinder that can drive the lifting plate to move up and down is provided on the lifting plate. When the lifting plate drives the guide plate to move up and down relative to the rotating shaft, it can drive the rotating shaft to rotate.

[0010] Preferably, the upper end of the flow guide is connected to a telescopic rod, the other end of which is slidably connected to the inner wall of the box. A baffle is provided below the flow guide, and a second spring is provided at the upper end of the extension plate. The other end of the second spring is connected to the push plate, which can reciprocate on the extension plate.

[0011] Preferably, the guide cloth has extensibility and sealing properties, and can maintain the sealing properties of the guide cloth when the guide port moves, so that gas can only pass through the guide port.

[0012] Preferably, the bottom of the spray frame is provided with a nozzle for spray dust removal, and the inside of the housing is provided with a fixed frame for placing the spray frame. The universal mechanism includes a universal rod installed on the fixed frame, and a first universal ball is provided on the universal rod. The first universal ball can rotate freely along the fixed frame. The two ends of the universal rod have telescopic functions and are connected to two second universal balls. The second universal balls are respectively installed on the baffle and the spray frame to ensure that the guide port and the spray frame move in opposite directions.

[0013] Preferably, a fixing device is provided above the guide frame. The fixing device includes a fixing plate that moves up and down along the inside of the box. A positioning plate installed on the guide frame is provided below the fixing plate. A second hydraulic cylinder that can drive the fixing plate to move up and down is provided on the fixing plate. When the fixing plate moves down, it can contact and press the positioning plate to limit its movement.

[0014] Preferably, a fan is installed on the top of the housing to control the flow of gas, and a dust concentration detection device is installed at the air outlet on the top of the housing to detect whether the dust content in the gas after dust removal meets the standard.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. When the dust concentration detection device detects that the dust content is not up to standard, it determines which locations in the workshop have excessively high dust content by observing the amount of impurities adhering to the surface of the filter screen during operation, which in turn affects the airflow speed. By moving the filter screen at that location, the spray mechanism moves closer and the air outlet mechanism moves further away, thereby extending the dust removal time at that location and improving the dust removal effect. It makes synchronous adjustments based on the constantly changing dust in the workshop, which is convenient, quick, and ensures that the dust is completely removed.

[0016] 2. By adjusting the water flow area synchronously through the slide plate, dust is initially treated, reducing the dust removal pressure during subsequent spraying. At the same time, the filter screen can be cleaned directly during operation, avoiding unnecessary time loss caused by cleaning the filter screen when the machine is stopped. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention; Figure 2 This is a transverse isometric sectional view of a specific embodiment of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4This is a schematic diagram of the internal structure of a specific embodiment of the present invention; Figure 5 This is a schematic diagram of the filter mechanism structure in a specific embodiment of the present invention; Figure 6 This is a schematic diagram of the cooperation structure between the filter screen and the guide plate in a specific embodiment of the present invention; Figure 7 for Figure 6 Enlarged structural diagram at point B; Figure 8 This is a schematic diagram of the spray mechanism and the air outlet mechanism in a specific embodiment of the present invention; Figure 9 This is a schematic diagram of the fixing frame structure in a specific embodiment of the present invention.

[0018] In the diagram: 1. Housing; 11. Air inlet; 12. Fixing frame; 2. Fan; 3. Filtering mechanism; 31. Guide frame; 311. Long slot; 32. Guide frame; 321. First spring; 322. Positioning plate; 33. Filter screen; 331. Rotating shaft; 332. Sliding column; 34. Guide plate; 341. Positioning hole; 342. Spiral groove; 35. Lifting plate; 36. First hydraulic cylinder; 37. Extension plate; 38. Push plate; 39. Second spring; 4. Spraying mechanism; 41. Spray frame; 42. Guide plate; 43. Slide plate; 5. Air outlet mechanism; 51. Guide cloth; 52. Guide port; 53. Telescopic rod; 54. Baffle; 6. Fixing device; 61. Fixing plate; 62. Second hydraulic cylinder; 7. Universal rod; 71. First universal ball; 72. Second universal ball. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-8 The present invention provides the following technical solution: a dust removal device for a production workshop, comprising a housing 1, a fan 2, a filter mechanism 3, a spray mechanism 4, an air outlet mechanism 5, and a fixing device 6; The housing 1 is placed horizontally on the ground. Multiple air inlets 11 are located at the bottom of the housing 1, each with a different orientation. A fan 2 is installed on the top of the housing 1. The fan 2 draws air from different directions within the workshop into the housing 1 through the air inlets 11. In this embodiment, there are four air inlets 11. A filter mechanism 3 is installed inside the housing 1, with the same number of filters as the number of air inlets 11, and its installation position corresponds to the position of the air inlets 11, allowing air to directly pass through the filter mechanism 3 into the housing 1. The housing 1 is equipped with a spray mechanism 4 and an air outlet mechanism 5. The air outlet mechanism 5 is located below the fan 2. The spray mechanism 4 is located between the filter mechanism 3 and the air outlet mechanism 5. The spray mechanism 4 sprays the gas entering the housing 1 to remove dust. The dust-removed gas rises to the air outlet mechanism 5. The air outlet mechanism 5 adjusts its horizontal position to change the outlet position of the gas. The fixing device 6 is installed below the spray mechanism 4. The fixing device 6 is used to fix the air outlet mechanism 5 after it has been adjusted to ensure that the gas passes through the air outlet mechanism 5 at a fixed angle. Finally, the clean air is discharged through the fan 2.

[0021] Please see Figures 4-7 The filter mechanism 3 includes a guide frame 31 disposed on the inner wall of the housing 1. The guide frame 31 is installed at the air inlet 11 and has a flow channel inside. This flow channel can cover the area of ​​the air inlet 11, so that the air inlet 11 and the flow channel are interconnected. A guide frame 32 is slidably connected to the inner side of the guide frame 31. The guide frame 32 is in close contact with the inner wall of the guide frame 31 and can slide back and forth along the inner wall of the guide frame 31 to approach or move away from the air inlet 11. A filter screen 33 is rotatably mounted on the guide frame 32. In this embodiment, one guide frame is used. Two filters 33 are provided on the upper part of the guide frame 32. The filters 33 can be rotated to completely cover the guide frame 32 to filter dust in the passing gas, or rotated to open the guide frame 32 so that the gas can enter the interior of the housing 1 directly without passing through the filters 33. The bottom of the guide frame 31 is provided with a long groove 311 along the moving direction of the guide frame 32. The long groove 311 penetrates the bottom surface of the guide frame 31. The bottom of the filter 33 is provided with a rotating shaft 331 that penetrates the long groove 311 and slides along its length. The rotating shaft 331 can reciprocate along the length of the long groove 311. A first spring 321 is connected to the side of the guide frame 32 near the air inlet 11. The other end of the first spring 321 is connected to the inner wall of the housing 1. In the initial state, the tension of the first spring 321 causes the guide frame 32 to move to the side of the guide frame 31 that is close to the air inlet 11.

[0022] Below the guide frame 31 is a guide plate 34 that can slide up and down along the rotating shaft 331. Above the guide plate 34 is a positioning hole 341 that mates with the rotating shaft 331. The inner wall of the positioning hole 341 is provided with a spiral groove 342, which is spirally arranged along the length of the positioning hole 341. The outer wall of the rotating shaft 331 is provided with a sliding column 332 that slides freely in the spiral groove 342. This design ensures that when the guide plate 34 slides on the rotating shaft 331, the rotating shaft 331 is driven to rotate on a fixed axis through the spiral groove 342 on the inner wall of the positioning hole 341. The bottom of the guide plate 34 is slidably connected to a lifting plate 35 that can move up and down along the inside of the housing 1. The guide plate 34 can slide horizontally away from or near the air inlet 11 along the lifting plate 35. A first hydraulic cylinder 36 is installed inside the housing 1. The output end of the first hydraulic cylinder 36 is connected to the lifting plate 35. The lifting plate 35 is driven to move up and down along the housing 1 by the first hydraulic cylinder 36, thereby controlling the up and down movement of the guide plate 34.

[0023] When the dust content is within acceptable limits, filter 33 rotates to keep guide frame 32 open, allowing gas to directly enter the housing 1 through inlet 11 and guide frame 32. At this time, guide frame 32 remains close to inlet 11. When excessive dust content is detected, the first hydraulic cylinder 36 moves lifting plate 35 and guide plate 34 upwards, causing filter 33 to rotate and completely cover guide frame 32 and the flow channel. Since dust concentration varies at different locations in the workshop, the filtration speed of filter 33 also varies; the faster a filter 33 becomes clogged, the more severe the dust pollution in that direction. After a period of time, some severely clogged filter 33s experience poor gas flow. Due to the negative pressure of fan 2, guide frame 32 moves along guide frame 31 away from inlet 11. A dust concentration detection device is installed at the top outlet of housing 1 to detect the dust content in the gas after dust removal.

[0024] Please see Figures 3-8 The air outlet mechanism 5 includes a guide cloth 51 and a guide port 52. The edge of the guide cloth 51 is sealed to the inner wall of the housing 1. The guide port 52 is located in the middle of the guide cloth 51 and is higher than the edge of the guide cloth 51, making the guide cloth 51 form a protrusion. When the gas flows upward, it can be guided by the guide cloth 51 to the middle and discharged from the guide port 52. The guide cloth 51 is made of elastic material with good extensibility and sealing performance. It can be stretched and ensures that the gas can only pass through the guide port 52. Multiple telescopic rods 53 are provided on the side of the upper end of the guide port 52. One end of the telescopic rod 53 is connected to the guide port 52, and the other end is slidably connected to the inner wall of the housing 1 in the horizontal direction, so that the telescopic rod 53 can slide along the inner wall of the housing 1 in the same horizontal direction.

[0025] A pushing mechanism is provided above the guide frame 32. The pushing mechanism includes an extension plate 37, a push plate 38, and a second spring 39. The extension plate 37 is located on the upper end of the guide frame 32, and the push plate 38 is slidably connected above the extension plate 37. The two ends of the second spring 39 are connected to the push plate 38 and the extension plate 37, respectively. A baffle 54 is provided below the guide port 52. In the initial state, the second spring 39 causes one end of the push plate 38 to contact the baffle 54. At this time, the guide port 52 is located in the center of the housing 1. When a filter 33 is blocked, the guide frame 32 drives the extension plate 37 and the push plate 38 to approach the baffle 54. While the second spring 39 is compressed, it pushes the guide port 52 away from the side of the severely blocked filter 33, so that the guide port 52 is away from the side of the severely blocked air inlet 11. This prolongs the distance that the gas flows from the direction of the air inlet 11 to the guide port 52, thereby prolonging the time that the gas passes through the spray mechanism 4, so that the dust is removed more thoroughly.

[0026] Please see Figure 4 , Figure 5 and Figure 8 The spraying mechanism 4 includes a spray frame 41 and a guide plate 42. A fixed frame 12 is horizontally installed inside the housing 1. The spray frame 41 can move horizontally along the fixed frame 12. A nozzle is installed at the bottom of the spray frame 41 to spray dust-removing liquid downwards, used to remove dust from the inhaled gas. The guide plate 42 is a ring-shaped plate made of multiple plates, with its edges fixed to the inner wall of the housing 1 and sealed to the housing 1. The center of the guide plate 42 is open, connecting the upper and lower chambers. The guide plate 42 is inclined, meaning its edge is higher than the central opening, allowing airflow to flow upwards only through the central opening. The guide plate 42 is positioned below the spray frame 41. When water is sprayed downwards through the nozzles, the water flow completely covers the central opening, and some water sprays onto the guide plate 42 and flows downwards along its upper surface, making initial contact with the incoming gas for dust removal.

[0027] A slide plate 43 is slidably connected to the bottom of the deflector plate 42. The slide plate 43 is in close contact with the bottom surface of the deflector plate 42 and can slide up and down along the slope. Initially, the slide plate 43 is completely inside the bottom surface of the deflector plate 42. An extension plate 37 extends through the deflector plate 42 and the slide plate 43 to the top of the deflector plate 42. A guide groove is provided on the deflector plate 42 to allow the extension plate 37 to slide back and forth. The slide plate 43 and the extension plate 37 slide up and down together. When the extension plate 37 moves away from the air inlet 11, the extension plate 37 can drive the slide plate 43 to slide along the deflector plate 42. At this time, the slide plate 43 moves diagonally downward and extends from the bottom of the deflector plate 42. The water flowing down the upper surface of the deflector plate 42 continues to flow onto the slide plate 43 and then flows down. The lower end of the slide plate 43 is set in a sawtooth shape, which can extend the length of the water flow when it flows down the slide plate 43, thereby increasing the contact area between the dust and the water.

[0028] Please see Figure 8 and Figure 9 A universal joint is provided between the spray frame 41 and the air outlet mechanism 5. The universal joint can adjust the relative position of the spray frame 41 and the air outlet mechanism 5. The universal joint includes a universal rod 7 mounted on the fixed frame 12. A first universal ball 71 is provided in the middle of the universal rod 7. The fixed frame 12 is provided with a ball socket that mates with the first universal ball 71. The center of the first universal ball 71 coincides with the center of the ball socket. At this time, the first universal ball 71 can rotate freely in the ball socket. The two ends of the universal rod 7 have telescopic functions. Two second universal balls 72 are connected to the two ends of the universal rod 7. The second universal balls 72 move closer to or away from the first universal ball 71 along the universal rod 7. The second universal balls 72 are respectively installed at the bottom of the baffle 54 and the top of the spray frame 41, and the installation method is the same as that of the first universal ball 71.

[0029] When the baffle 54 moves horizontally along the guide port 52, the universal rod 7 drives the first universal ball 71 to rotate. Through the telescopic cooperation of the connection between the universal rod 7 and the second universal ball 72, the spray frame 41 moves in the opposite direction to the guide port 52. That is, the spray frame 41 will move closer to the direction of the most severely blocked air inlet 11. At this time, the amount of water flowing down from the guide plate 42 and the slide plate 43 in this direction increases, ensuring that the water flow moves towards the direction of the most severe dust. This realizes the dynamic adjustment of the spray mechanism 4 when the dust content changes. Moreover, the spray frame 41 always keeps the water flow completely covering the central through-hole during the movement, preventing dust from escaping upwards.

[0030] Please see Figure 2 , Figure 4 and Figure 5 The fixing device 6 includes a fixing plate 61, which can slide up and down along the inside of the housing 1. A positioning plate 322 is provided on the guide frame 32, and the fixing plate 61 is positioned above the positioning plate 322. A second hydraulic cylinder 62 is installed inside the housing 1. The output end of the second hydraulic cylinder 62 is connected to the fixing plate 61. The second hydraulic cylinder 62 drives the fixing plate 61 to move up and down along the housing 1, moving it away from or closer to the positioning plate 322.

[0031] During operation, when impurities adhere to the filter screen 33 and move a certain distance, the guide port 52 and the spray frame 41 move relative to each other synchronously. At this time, the fixing plate 61 moves downward, pressing it tightly against the positioning plate 322 to limit its position, ensuring that the filter mechanism 3 remains in its current position. The relative positions of the spray mechanism 4 and the air outlet mechanism 5 are simultaneously fixed. The angle of the filter screen 33 is adjusted so that air can enter the housing 1 directly without passing through the filter screen 33. The dust removal device is then adjusted according to the constantly changing dust position in the production workshop, continuously directing water flow towards areas with severe dust pollution. Furthermore, the dust adhering to the filter screen 33 can be cleaned manually or by adjusting the angle of the filter screen 33 and then backflushing it with airflow, avoiding the need to stop the machine for cleaning due to excessive dust.

Claims

1. A dust removal device for a production workshop, comprising: The housing (1) and the air inlet (11) located below the housing (1) are characterized in that they further include: The filter mechanism (3) is installed on the inner wall of the housing (1). The filter mechanism (3) includes a guide frame (31) installed at the air inlet (11). When the filter mechanism (3) is blocked, the filter mechanism (3) can move along the guide frame (31) into the housing (1). An air outlet mechanism (5) is installed above the filter mechanism (3). The air outlet mechanism (5) includes a guide cloth (51) that surrounds the inner wall of the housing (1). The guide cloth (51) is made of elastic material, and a guide port (52) is provided in the middle of the guide cloth (51). The spray mechanism (4) is installed between the filter mechanism (3) and the air outlet mechanism (5). The spray mechanism (4) includes a spray frame (41) installed inside the housing (1) and capable of moving in the horizontal direction. A universal mechanism is provided between the spray frame (41) and the air outlet mechanism (5). The universal mechanism allows the spray frame (41) to move in the opposite direction to the direction of the guide port (52). The filter mechanism (3) is equipped with a pushing mechanism, which is connected to the air outlet mechanism (5). When the filter mechanism (3) moves, it can push the guide port (52) to move in the same direction.

2. The dust removal device for a production workshop according to claim 1, characterized in that: Below the spray frame (41) is a guide plate (42) installed on the inner wall of the box (1). The guide plate (42) is vertically connected in the middle. Part of the water sprayed from the spray frame (41) can flow down along the guide plate (42). A sliding plate (43) is slidably connected to the bottom of the guide plate (42). The guide plate (42) is inclined. The sliding plate (43) can slide up and down along the bottom inclined surface of the guide plate (42). The lower end of the sliding plate (43) is serrated. The pushing mechanism includes an extension plate (37). 37) The extension plate (43) extends through the guide plate (42) and the slide plate (43) to the top of the guide plate (42). The slide plate (43) is slidably connected to the extension plate (37). The inner wall of the guide frame (31) is equipped with a guide frame (32) that can slide back and forth. When the guide frame (32) moves away from the air inlet (11), it drives the slide plate (43) to move obliquely downwards at the same time until it extends out from the bottom of the guide plate (42). The guide plate (42) is provided with a guide groove so that the extension plate (37) can slide back and forth along the guide plate (42).

3. A dust removal device for a production workshop according to claim 2, characterized in that: The guide frame (32) is provided with a first spring (321) for limiting its movement. The two ends of the first spring (321) are connected to the guide frame (32) and the inner wall of the box (1) respectively, so that it is initially located on the side close to the air inlet (11). A filter screen (33) is rotatably installed on the guide frame (32). A rotating shaft (331) is provided at the bottom of the filter screen (33). A long groove (311) is provided at the bottom of the guide frame (31). The rotating shaft (331) can move back and forth along the long groove (311). The rotating shaft (331) passes through the long groove (311) to the bottom of the guide frame (31).

4. A dust removal device for a production workshop according to claim 3, characterized in that: Below the guide frame (31) is a guide plate (34) that can slide up and down. The guide plate (34) is provided with a positioning hole (341). The rotating shaft (331) slides up and down in the positioning hole (341). The inner wall of the positioning hole (341) is provided with a spiral groove (342) along its length direction. The outer wall of the rotating shaft (331) is provided with a sliding column (332) that matches the spiral groove (342). The bottom of the guide plate (34) is slidably connected to a lifting plate (35). The lifting plate (35) is provided with a first hydraulic cylinder (36) that can drive the lifting plate (35) to move up and down. When the lifting plate (35) drives the guide plate (34) to move up and down relative to the rotating shaft (331), it can drive the rotating shaft (331) to rotate.

5. A dust removal device for a production workshop according to claim 4, characterized in that: The upper end of the flow guide (52) is connected to a telescopic rod (53), and the other end of the telescopic rod (53) is slidably connected to the inner wall of the box (1). A baffle (54) is provided below the flow guide (52), and a second spring (39) is provided at the upper end of the extension plate (37). The other end of the second spring (39) is connected to the push plate (38), and the push plate (38) can move back and forth on the extension plate (37).

6. A dust removal device for a production workshop according to claim 5, characterized in that: The guide cloth (51) has extensibility and sealing properties, and can maintain the sealing properties of the guide cloth (51) when the guide port (52) moves, so that gas can only pass through the guide port (52).

7. A dust removal device for a production workshop according to claim 1, characterized in that: The bottom of the spray frame (41) is provided with a nozzle for spraying dust removal. The box (1) is provided with a fixed frame (12) for placing the spray frame (41). The universal mechanism includes a universal rod (7) installed on the fixed frame (12). A first universal ball (71) is provided on the universal rod (7). The first universal ball (71) can rotate freely along the fixed frame (12). The two ends of the universal rod (7) have telescopic function and are connected to two second universal balls (72). The second universal balls (72) are respectively installed on the baffle (54) and the spray frame (41) to ensure that the guide port (52) and the spray frame (41) move in opposite directions.

8. A dust removal device for a production workshop according to claim 1, characterized in that: A fixing device (6) is provided above the guide frame (31). The fixing device (6) includes a fixing plate (61) that moves up and down along the inside of the box (1). A positioning plate (322) is provided below the fixing plate (61) and mounted on the guide frame (32). A second hydraulic cylinder (62) is provided on the fixing plate (61) that can drive it to move up and down. When the fixing plate (61) moves down, it can contact and press the positioning plate (322) to limit its movement.

9. A dust removal device for a production workshop according to claim 1, characterized in that: A fan (2) is installed on the top of the box (1) to control the flow of gas. A dust concentration detection device is installed at the air outlet on the top of the box (1) to detect whether the dust content in the gas after dust removal meets the standard.

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