A dustproof device for a discharge car

Abstract

The application discloses a dustproof device for a discharging vehicle and belongs to the technical field of dust removal equipment. The dustproof device comprises a dust removal ventilation groove, a dust removal trolley, a belt cleaning device, a dust suction pipeline and a discharging vehicle. The dust removal trolley is arranged on the dust removal ventilation groove, the belt cleaning device is arranged on the dust removal trolley, and the dust suction pipeline is connected between the discharging vehicle and the dust removal trolley. The fastening rod of the dust removal ventilation groove is rotated to drive the belt fastening rod to rotate, thereby tightening the sealing belt. The locking sliding block on the belt fastening rod is used for fixing the sealing belt. The dust removal trolley is extruded and attached to the dust removal ventilation groove to move under the action of the sealing belt. The traveling roller rolls on the sealing belt and compacts the sealing belt. The positioning rollers on the two sides of the traveling roller roll on the positioning track to prevent the traveling roller from deviating from the roller traveling groove. The cleaning plate can clean the inner wall of the sealing belt during the movement of the dust removal trolley, thereby preventing excessive accumulation of dust on the surface of the sealing belt.

Description

Technical Field

[0001] This invention belongs to the field of dust removal equipment technology, specifically referring to a dust prevention device for unloading trucks. Background Technology

[0002] Industries such as steel and coal have a large amount of bulk materials that need to be unloaded using belt conveyor unloading trolleys. The unloading trolleys are usually set on the track at the top of the silo. When the unloading trolleys unload materials, a large amount of dust is generated as the material falls from the material conveying device to the unloading funnel and chute. Since the unloading trolleys are located at the top of the silo, the dust will spread throughout the silo and affect the health of the workers. Therefore, mobile dust collection vehicles are usually used during the unloading process.

[0003] Existing mobile dust collection vehicles use steel plates and sealing belts for sealing. However, due to wear and loosening of the sealing belts over long-term use, as well as the accumulation of dust inside the sealing belts, the sealing belts may deviate from their tracks. This can lead to insecure sealing of the dust collection device, resulting in a decrease in pressure within the ventilation ducts, which in turn affects the dust collection effect. In severe cases, it can cause the mobile dust collection vehicle to deviate from its travel track. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a dust prevention device for unloading vehicles, which effectively solves the above problems.

[0005] The technical solution adopted by this invention is as follows: This invention proposes a dust prevention device for an unloading vehicle, including a dust removal ventilation duct, a dust removal trolley, a belt cleaning device, a dust suction pipe, and an unloading vehicle. The dust removal trolley is installed on the dust removal ventilation duct, the belt cleaning device is installed on the dust removal trolley, and the dust suction pipe is connected between the unloading vehicle and the dust removal trolley. The dust removal ventilation duct includes a ventilation duct body, a sealing belt, a belt fastening rod, and a fastening rod control disc. One end of the ventilation duct body is a ventilation end, and the other end of the ventilation duct body is a closed end. The sealing belt is installed on the ventilation duct body, and the belt fastening rod is installed at the closed end of the ventilation duct body. The belt fastening rod is pressed against the surface of the sealing belt. The fastening rod control disc is installed on the side wall of the ventilation duct body and is connected to the belt fastening rod.

[0006] Furthermore, the ventilation duct body has positioning rails on both sides of its top, a support plate on the underside of the positioning rails, a roller travel groove and a belt sealing groove on the top surface of the ventilation duct body, the belt sealing groove being located at the bottom of the roller travel groove, a ventilation grille below the belt sealing groove, and a sealing belt located within the belt sealing groove. The outer wall of the closed end of the ventilation duct body has a belt fixing groove, fastening rod rotating seats on both sides of the belt fixing groove, the end of the sealing belt being located within the belt fixing groove, and the belt fastening rod rotating on the fastening rod rotating seat. The outer wall of the closed end of the ventilation duct body has an adjustment disc rotating column, and the fastening rod adjustment disc rotating on the adjustment disc rotating column.

[0007] Furthermore, one end of the belt fastening rod is provided with a fastening rod gear, the center of the belt fastening rod is provided with a locking slider groove, the belt fastening rod also includes a locking slider, the locking slider slides in the locking slider groove, the bottom of the locking slider is provided with a locking slider spring, the end of the locking slider spring is provided on the inner wall of the locking slider groove, one side of the front end of the locking slider is a flat surface, the other side of the front end of the locking slider is an arc surface, the inner side of the fastening rod control disc is provided with a control disc gear, the control disc gear meshes with the fastening rod gear, and the fastening rod control disc is provided with a crank handle.

[0008] Preferably, by turning the crank, the fastening rod adjustment disc is rotated in the forward direction, which in turn drives the belt fastening rod to rotate. The belt fastening rod drives the sealing belt to move downward in the belt fixing groove through friction. The arc-shaped surface of the locking slider is squeezed into the locking slider groove by the sealing belt, while the flat surface of the locking slider is pressed against the sealing belt. At the same time, the sealing belt tends to drive the belt fastening rod to rotate in the opposite direction, which increases the pressure of the flat surface of the locking slider on the sealing belt, prevents the sealing belt from loosening, and improves the sealing effect of the sealing belt.

[0009] Furthermore, the dust removal trolley includes a trolley body, a traveling roller, and a top roller. The trolley body slides on the roller traveling groove, and the lower part of the trolley body is connected to the ventilation duct body. The traveling rollers are symmetrically arranged on both sides of the bottom of the trolley body and roll on the roller traveling groove. The top rollers are symmetrically arranged on both sides of the top of the trolley body. The sealing belt covers the outside of the trolley body. The traveling rollers roll on the outer surface of the sealing belt, and the top rollers roll on the inner surface of the sealing belt. During the movement of the dust removal trolley, it is squeezed by the sealing belt and always moves in close contact with the roller traveling groove.

[0010] Preferably, the traveling roller rolls in the roller travel groove and rolls on the sealing belt, compacting the sealing belt. The positioning rollers on both sides of the traveling roller roll on the positioning track. The inclined groove design of the positioning track prevents the traveling roller from deviating from the roller travel groove and the sealing belt from deviating from the belt sealing groove, while ensuring the sealing effect between the sealing belt and the dust removal trolley and ensuring the negative pressure environment inside the dust removal trolley.

[0011] Furthermore, the trolley body has symmetrically provided limiting plate grooves and cleaning plate through grooves on both sides, and roller rotating seats are provided at the four corners of the bottom of the trolley body. The traveling rollers rotate on the roller rotating seats. Roller rotating grooves are provided on both sides of the top of the trolley body. The top rollers rotate in the roller rotating grooves. The dust suction pipe passes through the front wall of the dust removal trolley. The rear arm of the dust removal trolley is provided with a maintenance plate, and the dust suction pipe is connected to the maintenance plate.

[0012] Furthermore, the belt cleaning device includes a cleaning plate, a belt limiting plate, and a roller assembly. The belt limiting plate is located on both sides of the cleaning plate, and the cleaning plate rotates on the belt limiting plate. The belt limiting plate is located on the groove of the limiting plate, and the cleaning plate is located in the through groove of the cleaning plate. The roller assembly is located between the belt limiting plate and the cleaning plate. The sealing belt is located between the two belt limiting plates on the same side and is used to straighten the sealing belt and prevent the sealing belt from deviating.

[0013] Furthermore, the cleaning plate has a cleaning plate rotating shaft at both ends, a spring groove on the cleaning plate rotating shaft, a support spring on the spring groove, and a roller groove at the top of both ends of the cleaning plate. A slider groove is provided in the roller groove, and the roller assembly is located in the roller groove.

[0014] Furthermore, the belt limiting plate has a limiting plate slot on its edge, which is fastened to the side plate of the limiting plate groove. The belt limiting plate has a cleaning plate rotation hole on its side wall, and a spring groove on its side wall. The cleaning plate rotation shaft rotates in the cleaning plate rotation hole, and the support spring is located in the spring groove.

[0015] Furthermore, the roller assembly includes a roller, a roller fixing member, and a limiting wedge. The roller rolls on the inner wall of the sealing belt. A baffle groove is provided on one side of the roller, and a wedge slot is provided in a circular array on the edge of the baffle groove. The roller fixing member is provided with a slider and a roller shaft. A baffle is provided at the end of the roller shaft. The slider slides in a slider groove. The roller rotates on the roller shaft. The baffle is located in the baffle groove and has a wedge groove. The limiting wedge is located in the wedge groove and has a wedge spring at its tail. The end of the wedge spring is located on the inner wall of the wedge groove.

[0016] Preferably, as the sealing belt moves upward along the through groove of the front cleaning plate of the dust removal trolley, the rollers adhere to the sealing belt. The wedge groove of the rollers is blocked by the straight edge of the limiting wedge, preventing the rollers from rotating and allowing them to slide on the sealing belt. At the same time, this causes the cleaning plate to rotate, so that the bottom of the cleaning plate adheres to the sealing belt to clean the surface dust, preventing excessive accumulation of dust on the surface of the sealing belt and causing the sealing belt to detach from the belt sealing groove. When the sealing belt moves downward along the through groove of the front cleaning plate of the dust removal trolley, it will again cause the rollers to rotate, and the bottom of the cleaning plate will move away from the sealing belt, preventing excessive wear of the sealing belt by the cleaning plate and rollers, thus improving the service life of the sealing belt and the sealing performance.

[0017] Furthermore, one end of the dust suction pipe is a dust suction port, and the other end of the dust suction pipe is a dust discharge port. The dust discharge port is provided with a tail fixing plate inside. The tail fixing plate is connected to the inspection plate by bolts. The unloading vehicle is provided with an unloading bin. The top of the unloading bin is provided with a dust suction trough. The dust suction port is located at the top of the dust suction trough and communicates with the dust suction trough.

[0018] The beneficial effects achieved by the present invention using the above structure are as follows:

[0019] 1. By turning the crank, the fastening rod adjustment disc rotates forward, which in turn drives the belt fastening rod to rotate. The belt fastening rod drives the sealing belt to move downward in the belt fixing groove through friction. The arc-shaped surface of the locking slider is squeezed into the locking slider groove by the sealing belt, while the flat surface of the locking slider is pressed against the sealing belt. At the same time, the sealing belt tends to drive the belt fastening rod to rotate in the opposite direction, which increases the pressure of the flat surface of the locking slider on the sealing belt, prevents the sealing belt from loosening, and improves the sealing effect of the sealing belt.

[0020] 2. During the movement of the dust removal trolley, it is squeezed by the sealing belt and always moves in close contact with the roller travel groove. At the same time, the travel roller rolls in the roller travel groove and rolls on the sealing belt, compacting the sealing belt. The positioning rollers on both sides of the travel roller roll on the positioning track. The inclined groove design of the positioning track prevents the travel roller from deviating from the roller travel groove and the sealing belt from deviating from the belt sealing groove, while ensuring the sealing effect between the sealing belt and the dust removal trolley and ensuring the negative pressure environment inside the dust removal trolley.

[0021] 3. As the sealing belt moves upward along the cleaning plate groove on the front side of the dust removal trolley, the rollers adhere to the sealing belt. The wedge groove of the rollers is blocked by the straight edge of the limiting wedge, preventing the rollers from rotating and allowing them to slide on the sealing belt. At the same time, this drives the cleaning plate to rotate, causing the bottom of the cleaning plate to adhere to the sealing belt and clean the surface dust, preventing excessive dust accumulation on the surface of the sealing belt and causing the sealing belt to detach from the belt sealing groove. When the sealing belt moves downward along the cleaning plate groove on the front side of the dust removal trolley, it will drive the rollers to rotate again, and the bottom of the cleaning plate will move away from the sealing belt, preventing excessive wear between the cleaning plate and the rollers on the sealing belt, thus improving the service life of the sealing belt and the sealing performance. Attached Figure Description

[0022] Figure 1 This is a perspective view of a dust prevention device for an unloading vehicle proposed in this invention;

[0023] Figure 2 This is a front view of a dust prevention device for an unloading vehicle proposed in this invention;

[0024] Figure 3 for Figure 2 A cross-sectional view along the cutting line AA;

[0025] Figure 4 for Figure 3 A cross-sectional view along the cutting line BB;

[0026] Figure 5 This is a partial structural schematic diagram of a dust prevention device for an unloading vehicle proposed in this invention;

[0027] Figure 6 This is a schematic diagram of the ventilation slot body of a dust prevention device for an unloading vehicle proposed in this invention;

[0028] Figure 7 This is a schematic diagram of the belt fastening rod of a dustproof device for an unloading vehicle proposed in this invention;

[0029] Figure 8 for Figure 7 A cross-sectional view along the section line CC;

[0030] Figure 9 This is a schematic diagram of the belt cleaning device of a dust prevention device for an unloading vehicle proposed in this invention;

[0031] Figure 10 for Figure 9 A cross-sectional view along the cutting line DD;

[0032] Figure 11 for Figure 9 A cross-sectional view along the cutting line EE;

[0033] Figure 12This is a schematic diagram of the cleaning plate of a dustproof device for an unloading vehicle proposed in this invention;

[0034] Figure 13 This is a schematic diagram of the belt limiting plate of a dustproof device for an unloading vehicle proposed in this invention;

[0035] Figure 14 This is a schematic diagram of the roller assembly of a dustproof device for an unloading vehicle proposed in this invention;

[0036] Figure 15 for Figure 5 A magnified view of a section at point I.

[0037] Among them, 1. Dust removal ventilation duct, 11. Ventilation duct body, 111. Positioning rail, 1111. Support plate, 112. Roller travel groove, 113. Belt sealing groove, 114. Ventilation grille, 115. Fastening rod rotating seat, 116. Control disc rotating column, 117. Belt fixing groove, 12. Sealing belt, 13. Belt fastening rod, 131. Fastening rod gear, 132. Locking slider groove, 133. Locking slider, 134. Locking slider spring, 14. Fastening rod control disc, 141. Control disc gear, 142. Handle; 2. Dust removal trolley, 21. Trolley body, 211. Limiting plate groove, 212. Roller rotating seat, 213. Roller rotating groove, 214. Inspection plate, 215. Cleaning plate through groove, 22. Traveling roller. 221. Positioning roller; 23. Top roller; 3. Belt cleaning device; 31. Cleaning plate; 311. Cleaning plate rotating shaft; 3111. Spring groove; 3112. Support spring; 312. Roller groove; 313. Slider groove; 32. Belt limiting plate; 321. Limiting plate slot; 322. Cleaning plate rotating hole; 323. Spring groove; 33. Roller assembly; 331. Roller; 3311. Baffle groove; 3312. Wedge slot; 332. Roller fixing part; 3321. Slider; 3322. Roller shaft; 3323. Baffle; 3324. Wedge groove; 333. Limiting wedge; 3331. Wedge spring; 4. Dust suction pipe; 41. Dust suction port; 42. Dust discharge port; 43. Tail fixing plate; 5. Unloading vehicle.

[0038] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] like Figures 1-15 As shown, the present invention proposes a dust prevention device for an unloading vehicle, including a dust removal ventilation duct 1, a dust removal trolley 2, a belt cleaning device 3, a dust suction pipe 4, and an unloading vehicle 5. The dust removal trolley 2 is mounted on the dust removal ventilation duct 1, the belt cleaning device 3 is mounted on the dust removal trolley 2, and the dust suction pipe 4 is connected between the unloading vehicle 5 and the dust removal trolley 2. The dust removal ventilation duct 1 includes a ventilation duct body 11, a sealing belt 12, a belt fastening rod 13, and a fastening rod control disc 14. One end of the ventilation duct body 11 is a ventilation end, and the other end of the ventilation duct body 11 is a closed end. The sealing belt 12 is mounted on the ventilation duct body 11, and the belt fastening rod 13 is mounted on the closed end of the ventilation duct body 11. The belt fastening rod 13 is pressed against the surface of the sealing belt 12. The fastening rod control disc 14 is mounted on the side wall of the ventilation duct body 11 and is connected to the belt fastening rod 13.

[0042] The ventilation duct body 11 has positioning rails 111 on both sides of the top, and a support plate 1111 on the lower side of the positioning rails 111. The top surface of the ventilation duct body 11 has a roller travel groove 112 and a belt sealing groove 113. The belt sealing groove 113 is located at the bottom of the roller travel groove 112. A ventilation grille 114 is located below the belt sealing groove 113. The sealing belt 12 is located in the belt sealing groove 113. The outer wall of the closed end of the ventilation duct body 11 has a belt fixing groove 117. Fastening rod rotating seats 115 are located on both sides of the belt fixing groove 117. The end of the sealing belt 12 is located in the belt fixing groove 117. The belt fastening rod 13 rotates on the fastening rod rotating seat 115. The outer wall of the closed end of the ventilation duct body 11 has an adjustment disc rotating column 116. The fastening rod adjustment disc 14 rotates on the adjustment disc rotating column 116.

[0043] The belt fastening rod 13 has a fastening rod gear 131 at one end, a locking slider groove 132 at the center of the belt fastening rod 13, and a locking slider 133 at the center of the belt fastening rod 13. The belt fastening rod 13 also includes a locking slider 133, which slides in the locking slider groove 132. A locking slider spring 134 is provided at the bottom of the locking slider 133, and the end of the locking slider spring 134 is located on the inner wall of the locking slider groove 132. One side of the front end of the locking slider 133 is flat, and the other side of the front end of the locking slider 133 is arc-shaped. An adjustment disc gear 141 is provided on the inner side of the fastening rod adjustment disc 14. The adjustment disc gear 141 meshes with the fastening rod gear 131. A crank 142 is provided on the fastening rod adjustment disc 14.

[0044] The dust removal trolley 2 includes a trolley body 21, a traveling roller 22, and a top roller 23. The trolley body 21 slides on the roller traveling groove 112. The lower part of the trolley body 21 is connected to the ventilation duct body 11. The traveling roller 22 is symmetrically arranged on both sides of the bottom of the trolley body 21 and rolls on the roller traveling groove 112. The top roller 23 is symmetrically arranged on both sides of the top of the trolley body 21. The sealing belt 12 covers the outside of the trolley body 21. The traveling roller 22 rolls on the outer surface of the sealing belt 12, and the top roller 23 rolls on the inner surface of the sealing belt 12.

[0045] The trolley body 21 has symmetrically arranged limiting plate grooves 211 and cleaning plate through grooves 215 on both sides. The four corners of the bottom of the trolley body 21 have roller rotating seats 212, and the traveling roller 22 rotates on the roller rotating seats 212. The top of the trolley body 21 has roller rotating grooves 213 on both sides, and the top roller 23 rotates in the roller rotating grooves 213. The dust suction pipe 4 passes through the front wall of the dust removal trolley 2. The rear arm of the dust removal trolley 2 has a maintenance plate 214, and the dust suction pipe 4 is connected to the maintenance plate 214.

[0046] The belt cleaning device 3 includes a cleaning plate 31, a belt limiting plate 32, and a roller assembly 33. The belt limiting plate 32 is located on both sides of the cleaning plate 31, and the cleaning plate 31 rotates on the belt limiting plate 32. The belt limiting plate 32 is located on the limiting plate groove 211, and the cleaning plate 31 is located at the cleaning plate through groove 215. The roller assembly 33 is located between the belt limiting plate 32 and the cleaning plate 31. The sealing belt 12 is located between the two belt limiting plates 32 on the same side.

[0047] The cleaning plate 31 has a cleaning plate rotating shaft 311 at both ends, a spring groove 3111 on the cleaning plate rotating shaft 311, a support spring 3112 on the spring groove 3111, and a roller groove 312 at the top of both ends of the cleaning plate 31. A slider groove 313 is provided in the roller groove 312, and the roller assembly 33 is located in the roller groove 312.

[0048] The belt limiting plate 32 has a limiting plate slot 321 on its edge, which is fastened to the side plate of the limiting plate groove 211. The belt limiting plate 32 has a cleaning plate rotation hole 322 on its side wall, and a spring groove 323 on its side wall. The cleaning plate rotation shaft 311 rotates in the cleaning plate rotation hole 322, and the support spring 3112 is located in the spring groove 323.

[0049] The roller assembly 33 includes a roller 331, a roller fixing member 332, and a limiting wedge 333. The roller 331 rolls on the inner wall of the sealing belt 12. A baffle groove 3311 is provided on one side of the roller 331. A wedge slot 3312 is provided in a circular array on the edge of the baffle groove 3311. The roller fixing member 332 is provided with a slider 3321 and a roller shaft 3322. A baffle 3323 is provided at the end of the roller shaft 3322. The slider 3321 slides in the slider groove 313. The roller 331 rotates on the roller shaft 3322. The baffle 3323 is provided in the baffle groove 3311. A wedge groove 3324 is provided on the baffle 3323. The limiting wedge 333 is provided in the wedge groove 3324. A wedge spring 3331 is provided at the tail of the limiting wedge 333. The end of the wedge spring 3331 is provided on the inner wall of the wedge groove 3324.

[0050] One end of the dust suction pipe 4 is a dust suction port 41, and the other end of the dust suction pipe 4 is a dust discharge port 42. The dust discharge port 42 is equipped with a tail fixing plate 43 inside. The tail fixing plate 43 is connected to the inspection plate 214 by bolts. The unloading vehicle 5 is equipped with an unloading bin. The top of the unloading bin is equipped with a dust suction trough. The dust suction port 41 is located at the top of the dust suction trough and is connected to the dust suction trough.

[0051] In practical use, during the unloading process of the unloading vehicle 5, a large amount of dust will appear in the unloading bin. The ventilation duct body 11 generates suction under the action of the fan. The airflow carries the dust in the unloading bin through the dust suction trough and the dust suction port 41 of the dust suction pipe 4, into the dust suction pipe 4, and then into the ventilation duct body 11 from the dust discharge port 42. The dust enters the ventilation duct body 11 and is collected through the ventilation end of the ventilation duct body 11. The sealing belt 12 is set in the belt sealing groove 113 at the top of the ventilation duct body 11. The end of the sealing belt 12 is fixed in the belt fixing groove 117. At the same time, by rotating the crank handle 142 in the forward direction, the fastening rod control disc 14 is rotated. The control disc gear 141 of the fastening rod control disc 14 drives the fastening rod gear 131, thereby rotating the belt fastening rod 13. The belt fastening rod 13 drives the end of the sealing belt 12 to move downward, thereby tightening the sealing belt 12. During the forward rotation of the belt fastening rod 13, the arc of the locking slider 133 is locked. After the surface rotates to the surface of the sealing belt 12, the locking slider 133 is compressed by the sealing belt 12, and the locking slider spring 134 is compressed and enters the locking slider groove 132. This will not hinder the rotation of the belt fastening rod 13. When the sealing belt 12 is taut, the belt fastening rod 13 will no longer drive the sealing belt 12 to move. The belt fastening rod 13 will only slide relative to the sealing belt 12 to prevent the sealing belt 12 from loosening. At this time, after the locking slider 133 passes the sealing belt 12, the crank handle 142 stops turning. The plane of the locking slider 133 will be in contact with the sealing belt 12. The sealing belt 12 cannot squeeze the locking slider 133 into the locking slider groove 132. At the same time, the sealing belt 12 has a tendency to drive the belt fastening rod 13 to rotate in the opposite direction, which increases the pressure of the plane of the locking slider 133 on the sealing belt 12, preventing the sealing belt 12 from loosening. When the sealing belt 12 is taut, it will not deviate from the belt sealing groove 113, thus improving the sealing effect of the dust removal ventilation groove 1.

[0052] During the movement of the unloading vehicle 5, the suction pipe 4 is driven, which in turn moves the dust removal trolley 2, causing it to travel on the ventilation duct body 11. The bottom of the dust removal trolley 2 slides between the two positioning tracks 111. Simultaneously, as the dust removal trolley 2 moves, the sealing belt 12 moves against it. The pressure from the sealing belt 12 keeps the dust removal trolley 2 firmly within the roller travel groove 112, while the traveling roller 22 rolls within the roller travel groove 112. The roller 22 rolls on the sealing belt 12 and compacts the sealing belt 12. The positioning rollers 221 on both sides of the traveling roller 22 roll on the positioning track 111. The inclined groove design of the positioning track 111 prevents the traveling roller 22 from deviating from the roller traveling groove 112. The two pairs of belt limit plates 32 at the front and rear of the dust removal trolley 2 correct the sealing belt 12, preventing the sealing belt 12 from deviating from the belt sealing groove 113, while ensuring the sealing effect between the sealing belt 12 and the dust removal trolley 2, and ensuring the negative pressure environment inside the dust removal trolley 2.

[0053] As the sealing belt 12 moves along the dust removal trolley 2, it moves upward from the front side of the trolley. During this upward movement, along the cleaning plate groove 215, the roller 331 adheres to the sealing belt 12. Under the elastic force of the wedge spring 3331, the limiting wedge 333 slides into the wedge groove 3312 of the roller 331. The wedge groove 3312 is blocked by the straight edge of the limiting wedge 333, preventing the roller 331 from rotating. Roller 331 and sealing belt 12 can only slide relative to each other, resulting in significant friction. Under this friction, roller 331 moves upward, which in turn drives roller fixing part 332 to move upward. The slider 3321 of roller fixing part 332 moves upward within the slider groove 313 of cleaning plate 31. Since the slider groove 313 is inclined, it causes the bottom of cleaning plate 31 to rotate towards sealing belt 12, making the bottom of cleaning plate 31 adhere to the surface of sealing belt 12, cleaning the dust on the surface of sealing belt 12, preventing excessive accumulation of dust on the surface of sealing belt 12, and gradually raising sealing belt 12 within belt sealing groove 113, causing air leakage in dust removal ventilation duct 1, thereby reducing the airtightness and negative pressure strength of dust removal ventilation duct 1. A belt cleaning device 3 is also provided at the rear of dust removal trolley 2 to ensure that sealing belt 12 can be cleaned simultaneously during bidirectional movement of dust removal trolley 2, and that sealing belt 12 moves downward when passing the rear of dust removal trolley 2. When the roller 331 rolls on the sealing belt 12, the wedge groove 3312 will squeeze the inclined side of the limiting wedge 333, thereby squeezing the limiting wedge 333 into the wedge groove 3324, so as not to block the rotation of the roller 331. At the same time, the roller 331 and the sealing belt 12 move downward, driving the cleaning plate 31 to rotate, so that the bottom of the cleaning plate 31 moves away from the sealing belt 12, preventing the cleaning plate 31 and the roller 331 from excessively wearing the sealing belt 12, and improving the service life of the sealing belt 12.

[0054] The above is the overall workflow of this invention. The actual operation is very simple and easy to implement.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0057] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A dust prevention device for an unloading vehicle, characterized in that: It includes a dust removal ventilation duct (1), a dust removal trolley (2), a belt cleaning device (3), a dust suction pipe (4), and an unloading trolley (5). The dust removal trolley (2) is located on the dust removal ventilation duct (1), the belt cleaning device (3) is located on the dust removal trolley (2), and the dust suction pipe (4) is connected between the unloading trolley (5) and the dust removal trolley (2). The dust removal ventilation duct (1) includes a ventilation duct body (11), a sealing belt (12), a belt fastening rod (13), and a fastening rod adjustment disc (14). One end of the ventilation duct body (11) is a ventilation end, and the other end of the ventilation duct body (11) is a closed end. The sealing belt (12) is provided on the ventilation duct body (11), and the belt fastening rod (13) is provided on the closed end of the ventilation duct body (11). The belt fastening rod (13) is pressed against the surface of the sealing belt (12). The fastening rod adjustment disc (14) is provided on the side wall of the ventilation duct body (11), and the fastening rod adjustment disc (14) is connected to the belt fastening rod (13). The belt fastening rod (13) has a fastening rod gear (131) at one end, a locking slider groove (132) at the center of the belt fastening rod (13), and a locking slider (133) at the center of the belt fastening rod (13). The belt fastening rod (13) also includes a locking slider (133), which slides in the locking slider groove (132). A locking slider spring (134) is provided at the bottom of the locking slider (133), and the end of the locking slider spring (134) is located on the inner wall of the locking slider groove (132). One side of the front end of the locking slider (133) is a flat surface, and the other side of the front end of the locking slider (133) is an arc surface. An adjustment disc gear (141) is provided on the inner side of the fastening rod adjustment disc (14), and the adjustment disc gear (141) meshes with the fastening rod gear (131). A crank (142) is provided on the fastening rod adjustment disc (14).

2. The dust prevention device for an unloading vehicle according to claim 1, characterized in that: The ventilation duct body (11) has positioning rails (111) on both sides of its top, and a support plate (1111) on the lower side of the positioning rails (111). The top surface of the ventilation duct body (11) has a roller travel groove (112) and a belt sealing groove (113). The belt sealing groove (113) is located at the bottom of the roller travel groove (112). A ventilation grille (114) is located below the belt sealing groove (113). The sealing belt (12) is located inside the belt sealing groove (113). The outer wall of the closed end of the ventilation duct body (11) is provided with a belt fixing groove (117), and fastening rod rotating seats (115) are provided on both sides of the belt fixing groove (117). The end of the sealing belt (12) is located in the belt fixing groove (117), and the belt fastening rod (13) rotates on the fastening rod rotating seat (115). The outer wall of the closed end of the ventilation duct body (11) is provided with a control disc rotating column (116), and the fastening rod control disc (14) rotates on the control disc rotating column (116).

3. The dust prevention device for an unloading vehicle according to claim 2, characterized in that: The dust removal trolley (2) includes a trolley body (21), a traveling roller (22), and a top roller (23). The trolley body (21) slides on the roller traveling groove (112). The trolley body (21) is connected to the ventilation groove body (11) at the bottom. The traveling roller (22) is symmetrically arranged on both sides of the bottom of the trolley body (21). The traveling roller (22) rolls on the roller traveling groove (112). The top roller (23) is symmetrically arranged on both sides of the top of the trolley body (21). The sealing belt (12) covers the outside of the trolley body (21). The traveling roller (22) rolls on the outer surface of the sealing belt (12). The top roller (23) rolls on the inner surface of the sealing belt (12).

4. A dust prevention device for an unloading vehicle according to claim 3, characterized in that: The trolley body (21) is symmetrically provided with a limiting plate groove (211) and a cleaning plate through groove (215) on both sides. The trolley body (21) is provided with a roller rotating seat (212) at the four corners of the bottom. The traveling roller (22) rotates on the roller rotating seat (212). The trolley body (21) is provided with roller rotating grooves (213) on both sides of the top. The top roller (23) rotates in the roller rotating groove (213). The dust suction pipe (4) passes through the front wall of the dust removal trolley (2). The rear arm of the dust removal trolley (2) is provided with a maintenance plate (214). The dust suction pipe (4) is connected to the maintenance plate (214).

5. A dust prevention device for an unloading vehicle according to claim 4, characterized in that: The belt cleaning device (3) includes a cleaning plate (31), a belt limiting plate (32), and a roller assembly (33). The belt limiting plate (32) is located on both sides of the cleaning plate (31). The cleaning plate (31) rotates on the belt limiting plate (32). The belt limiting plate (32) is located on the limiting plate groove (211). The cleaning plate (31) is located at the cleaning plate through groove (215). The roller assembly (33) is located between the belt limiting plate (32) and the cleaning plate (31). The sealing belt (12) is located between the two belt limiting plates (32) on the same side.

6. A dust prevention device for an unloading vehicle according to claim 5, characterized in that: The cleaning plate (31) has a cleaning plate rotating shaft (311) at both ends. The cleaning plate rotating shaft (311) has a spring groove (3111) and a support spring (3112) on the spring groove (3111). The top of both ends of the cleaning plate (31) also has a roller groove (312). The roller groove (312) has a slider groove (313) inside. The roller assembly (33) is located inside the roller groove (312).

7. A dust prevention device for an unloading vehicle according to claim 6, characterized in that: The belt limiting plate (32) has a limiting plate slot (321) on its edge. The limiting plate slot (321) is fastened to the side plate of the limiting plate groove (211). The belt limiting plate (32) has a cleaning plate rotating hole (322) on its side wall. The cleaning plate rotating hole (322) has a spring groove (323) on its side wall. The cleaning plate rotating shaft (311) rotates in the cleaning plate rotating hole (322). The support spring (3112) is located in the spring groove (323).

8. A dust prevention device for an unloading vehicle according to claim 7, characterized in that: The roller assembly (33) includes a roller (331), a roller fixing member (332), and a limiting wedge (333). The roller (331) rolls on the inner wall of the sealing belt (12). A baffle groove (3311) is provided on one side of the roller (331), and a wedge slot (3312) is provided in a circular array on the edge of the baffle groove (3311). The roller fixing member (332) is provided with a slider (3321) and a roller shaft (3322). A baffle (3323) is provided at the end of the roller shaft (3322). The slider (3321) slides in the slider groove (313), the roller (331) rotates on the roller shaft (3322), the baffle (3323) is provided in the baffle groove (3311), the baffle (3323) is provided with a wedge groove (3324), the limiting wedge (333) is provided in the wedge groove (3324), the tail of the limiting wedge (333) is provided with a wedge spring (3331), and the end of the wedge spring (3331) is provided on the inner wall of the wedge groove (3324).

9. A dust prevention device for an unloading vehicle according to claim 8, characterized in that: One end of the dust suction pipe (4) is a dust suction port (41), and the other end of the dust suction pipe (4) is a dust discharge port (42). The dust discharge port (42) is provided with a tail fixing plate (43) inside. The tail fixing plate (43) is connected to the inspection plate (214) by bolts. The unloading vehicle (5) is provided with an unloading bin. The top of the unloading bin is provided with a dust suction trough. The dust suction port (41) is located at the top of the dust suction trough and is connected to the dust suction trough.

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