Sealed belt conveyor

Abstract

A sealed belt conveyor is characterized in that a sealing device is arranged on a rack of the conveyor, an anti-inversion mechanism and a gravity self-adaptive cleaning mechanism are mounted on the rack, with short discharging time, of a conveying belt, baffle belt supports are arranged on the inner side of the upper end of a side support of the sealing device, and a flexible baffle belt is obliquely and fixedly mounted among the baffle belt supports. The outer side of the flexible blocking leather is tightly pressed on the upper surface of the edge part of the conveying belt; a sealing cover plate is arranged between the upper ends of the side supports, side sealing plates are connected between the side supports, the upper ends of the side sealing plates are in sealed butt joint with the edges of the sealing cover plate, and the sealing cover plate at the upper end of the conveyor rack and the side sealing plates on the two sides form a relatively-closed sealing shell on the outer side of the conveying belt. The sealing shell can prevent flying dust generated during conveying from dispersing all around, the non-return belt can be adjusted to the proper length again through unwinding of the winding roller of the anti-reverse mechanism, and the problems that a traditional non-return belt is troublesome to disassemble and assemble and waste of the non-return belt is serious are effectively solved.

Description

Technical Field

[0001] The invention relates to the field of belt conveyors, and in particular to a sealed belt conveyor. Background Art

[0002] Belt conveyor is a continuous conveying machine that uses flexible conveying as a material carrying and traction component. The conveyor belt rotates around the roller. When in use, the material is placed on the conveyor belt, and the friction between the roller and the conveyor belt is used to pull the conveyor belt and the material to run synchronously. Belt conveyor is suitable for conveying bulk materials and finished products in horizontal and inclined directions. It can also be used for assembly line operations with certain process operations. It has a large conveying capacity, low power consumption, and is widely used.

[0003] There are still some problems in the use of belt conveyors. First, due to the support resistance of the rollers and the installation accuracy, the conveyor belt is prone to vibration and deviation, which will cause the conveyed materials to fall from the belt, waste materials and generate dust. In addition, the conveying speed of the belt conveyor itself, the disturbance of the external airflow and the materials on the belt return belt will also cause the material to generate dust. These dusts will cause environmental pollution in the workshop and threaten the health of workers. Secondly, when the belt conveyor encounters a sudden power outage or equipment failure during operation, the belt conveyor will stop abnormally. Under the action of gravity, the materials on the conveyor belt will drive the belt to rotate in the opposite direction, causing the materials to slide from the bottom of the belt. At present, a belt-type check device is used to prevent the conveyor from reversing. However, during the conveying operation, the check belt constantly rubs against the inner surface of the conveyor belt, and it needs to be replaced when it is seriously worn and insufficient in length. At present, the entire check belt is usually disassembled and replaced with a new check belt of sufficient length, which causes serious waste of the check belt and the disassembly and assembly process is more troublesome and needs to be improved. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a sealed belt conveyor.

[0005] The technical solution of the present invention is: a sealed belt conveyor, comprising a frame and a conveying belt installed on a roller assembly in the frame, the conveying belt is provided with anti-slip grooves, the frame is provided with a sealing device, and an anti-reversal mechanism and a gravity adaptive cleaning mechanism are installed on the frame with a short conveying belt discharge; the sealing device comprises a plurality of side brackets arranged at equal intervals on both sides of the frame, a baffle support is provided on the inner side of the upper end of the side bracket, the baffle support is inclined inwardly at a certain angle, a flexible baffle made of rubber is obliquely fixedly installed between the plurality of baffle supports, and the outer side of the flexible baffle is pressed against the upper surface of the edge of the conveying belt; a sealing cover plate with an isosceles trapezoidal cross-section is provided between the upper ends of the side brackets, the sealing cover plate is a stainless steel iron plate, and a side sealing plate is connected between the side brackets, the material of the side sealing plate is the same as that of the sealing cover plate, the lower end of the side sealing plate extends to the lower support roller of the roller assembly, and the upper end of the side sealing plate is sealed and docked with the edge of the sealing cover plate.

[0006] Preferably, a baffle support is provided on one side of the feed port at the rear of the frame, and a material baffle is vertically fixedly connected to the baffle support, a high-hardness plastic plate is inside the material baffle, and the lower end of the material baffle is close to the surface of the conveyor belt at the feed port.

[0007] Preferably, a square tube is fixedly installed between the upper end surfaces of the plurality of side brackets, the side portion of the sealing cover plate is fixedly connected to the surface of the square tube, and the upper end of the side sealing plate is fixedly connected to the outer side surface of the square tube.

[0008] Preferably, the anti-reversal mechanism is installed on the frame inside the active roller in the roller assembly, the anti-reversal mechanism includes a winding roller and a check belt installed between the upper ends of the two vertical brackets, both ends of the winding roller are provided with a limit plate, a square rod-shaped positioning seat is fixedly connected between the lower ends of the two vertical brackets, the check belt is wrapped around the winding roller, the outer end of the check belt passes around the outer side surface of the positioning seat, the positioning seat is provided with a transition fillet at the corners, and extends out after being horizontally close to the bottom surface of the positioning seat, the outer end of the extended part of the check belt is located at the angle between the conveyor belt of the conveyor and the lower part of the active roller, and a clamping plate is provided on the bottom surface of the positioning seat, the length of the clamping plate is greater than the width of the check belt, and the two ends of the clamping plate are fixedly connected to the two ends of the positioning seat by screws.

[0009] Preferably, the outer end of the roller shaft at one end of the winding roller is a threaded shaft, the threaded shaft extends out of the vertical bracket, and a nut is installed on the threaded shaft.

[0010] Preferably, the gravity adaptive cleaning mechanism includes an inclined bracket symmetrically arranged on the two legs at the front end of the frame, the lower end of the inclined bracket is fixedly connected to the leg through a support, the two inclined brackets are located on both sides of the belt conveyor discharge nozzle, and a gravity adaptive scraper mechanism is installed between the two inclined brackets, the mechanism includes symmetrically arranged two side rods and scrapers, the middle parts of the two side rods are respectively hinged to the outer ends of the two oblique brackets, a support rod is connected between the inner ends of the two side rods, the scraper is horizontally installed in the middle of the support plate, the upper end of the scraper is pressed against the bottom surface of the front end of the conveyor belt, and a counterweight block is provided at the outer end of the side rod.

[0011] Preferably, a rotating support is provided in the middle of the side rod, the side rod is connected to the rotating shaft of the rotating support, and the rotating support is fixedly connected to the oblique bracket.

[0012] Preferably, the support rod is a section of tubular body, a tube clamp is provided at the inner end of the side rod, and both ends of the support rod are clamped in the two tube clamps.

[0013] The beneficial technical effects of the present invention are: (1) The sealing device of the present invention is elastically sealed and pressed against both sides of the conveyor belt by a flexible baffle. When the conveyor belt vibrates or deviates, the flexible baffle can always block the edge of the conveyor belt to prevent materials from being scattered from both sides of the conveyor belt, effectively suppress the generation of dust, and reduce material loss. The sealing cover plate at the upper end of the frame and the side sealing plates on both sides form a relatively closed sealing shell on the outside of the conveyor belt. The sealing shell can prevent the dust generated by the conveying from diffusing to the surroundings, and a slight negative pressure can be formed in the sealing shell through a negative pressure pipe, so that the generated dust can be sucked and recovered in time, effectively controlling the amount of dust in the working environment and preventing the health of workers from being damaged by dust.

[0014] (2) The anti-reverse mechanism of the present invention winds a check belt of sufficient length around a winding roller, and a positioning seat and a clamping plate are provided at the lower end of the winding roller to clamp and fix the check belt. When the check belt is severely worn and insufficient in length, the check belt can be readjusted to a suitable length by simply unwinding the winding roller, which effectively solves the problems of the traditional check belt being troublesome to disassemble and assemble and the serious waste of the check belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 AA sectional view of FIG. Figure 3 yes Figure 1 BB-direction cross-sectional schematic diagram; Figure 4 yes Figure 1 A magnified view of the front end of the medium belt conveyor; Figure 5This is the state diagram of the anti-reversal mechanism when the active roller rotates counterclockwise; Figure 6 It is one of the three-dimensional structural diagrams of the anti-reversal mechanism; Figure 7 This is the second schematic diagram of the three-dimensional structure of the anti-reversal mechanism; Figure 8 is a side view structural diagram of a gravity adaptive cleaning mechanism; Fig. 9 It is a schematic diagram of the top view of the gravity adaptive cleaning mechanism.

[0016] In the figure, 001. belt conveyor, 11. conveyor belt, 12. side bracket, 121. baffle support, 13. flexible baffle, 14. sealing cover, 15. side sealing plate, 151. folding edge, 16. lower support roller, 161. roller support, 17. baffle support, 18. material baffle, 181. vertical long hole, 191. horizontal roller, 192. inclined roller, 201. long angle iron, 202. square tube, 301. channel steel side beam, 302. feed hopper, 303. feed port, 401. support leg, 02. gravity adaptive cleaning mechanism, 21. active roller, 22. discharge nozzle, 23. oblique bracket, 241. side rod, 242. scraper, 243. support rod, 244. counterweight plate, 25. Rotating support, 251. Rotating shaft, 26. Pipe clamp, 271. Fixed splint, 272. Movable splint, 28. Reinforcement plate, 29. Angle iron seat, 03. Anti-reversal mechanism, 31. Frame, 32. Vertical bracket, 321. Docking plate, 33. Roller, 331. Threaded shaft, 332. Nut, 34. Check belt, 35. Positioning seat, 36. Pressing plate, 37. Screw, 04. Transfer conveyor. Implementation

[0017] Example 1, see the attached specification Figure 1-9A sealed belt conveyor comprises a frame 31 and a conveying belt 11 mounted on a roller assembly in the frame 31, a sealing device is arranged on the frame 31, and an anti-reversal mechanism 03 and a gravity adaptive cleaning mechanism 02 are installed on the frame 31 where the conveying belt 11 has a short discharge; the sealing device comprises a plurality of side brackets 12 arranged at equal intervals on both sides of the frame 31, a baffle support 121 is arranged on the inner side of the upper end of the side bracket 12, the baffle support 121 is tilted downward at a certain angle, a flexible baffle 13 is fixedly installed between the plurality of baffle supports 121 at an angle, the flexible baffle 13 is a flexible and wear-resistant rubber skin, the outer side of the flexible baffle 13 is pressed against the upper surface of the edge of the conveying belt 11, the bottom surface of the outer side of the flexible baffle 13 and the surface of the conveying belt 11 are sliding sealing surfaces, and the conveying belt 11 is provided with a sealing surface. During the process of the belt 11 moving and conveying, the two are in a sliding sealed state. Under the blocking effect of the flexible baffle 13, the material will not be scattered from the two sides of the conveyor belt 11 due to the vibration or deviation of the conveyor belt 11; a sealing cover plate 14 with an isosceles trapezoidal cross-section is provided between the upper ends of the side brackets 12, and a side sealing plate 15 is connected between the side brackets 12, and the lower end of the side sealing plate 15 extends to the lower support roller 16 of the roller assembly. The upper end of the side sealing plate 15 is sealed and docked with the edge of the sealing cover plate 14, and the sealing cover plate 14 and the side sealing plates 15 on both sides form a relatively closed sealing shell on the outside of the conveyor belt 11. The sealing shell can prevent the dust generated by the conveying from spreading to the surroundings, and control the dust in the sealing shell and below it, thereby effectively controlling the dust amount in the working environment.

[0018] A baffle support 17 is provided on one side of the feed port 303 at the rear of the frame 31, and a material baffle 18 is vertically fixedly connected to the baffle support 17, and the lower end of the material baffle 18 is close to the surface of the conveyor belt 11 at the feed port 303. The feed port 303 passes through the sealing cover plate 14 upward, and a feed hopper 302 is provided at the upper end of the feed port 303. After the material enters the lower end of the conveyor belt 11 from the feed hopper 302, the material baffle 18 can block the material to prevent the material from sliding down from the rear end when it enters the conveyor belt 11. A circular hole is provided in the middle of the baffle support 17, and a vertical long hole 181 is provided at the corresponding position of the material baffle 18. A fixing bolt is installed between the circular hole and the vertical long hole 181, and the vertical long hole 181 can conveniently adjust the height of the material baffle 18.

[0019] The roller assembly includes a transverse roller 191 and two inclined rollers 192 installed on the frame 31 through a roller bracket. The two inclined rollers 192 are symmetrically arranged at both ends of the transverse roller 191. The transverse roller 191 and the two inclined rollers 192 form a V-shaped groove structure. The cross-section of the conveyor belt 11 mounted in the roller assembly is also V-shaped.

[0020] A long angle iron 201 is fixedly connected between the upper surfaces of the baffle support 121, and the outer end of the flexible baffle 13 is fixedly connected to the inclined side plate of the long angle iron 201 by bolts. The long angle iron 201 can be used to conveniently assemble the flexible baffle 13 to an inclined state so that the lower end of the flexible baffle 13 can be stably pressed against the surface of the conveyor belt 11.

[0021] A square tube 202 is fixedly installed between the upper end surfaces of the several side brackets 12, the side of the sealing cover plate 14 is fixedly connected to the surface of the square tube 202, the upper end of the side sealing plate 15 is fixedly connected to the outer side surface of the square tube 202, and the lower end of the side sealing plate 15 is vertically provided with a folded edge 151 inwardly, and the lower end of the sealing shell formed by the sealing cover plate 14 and the side sealing plate 15 is in an open state. After the sealing shell controls the dust dispersion and generates dust, the dust inside will fall to the lower end of the belt conveyor 001, and the folded edge 151 is used to block the dust and control the falling range of the dust.

[0022] Two channel steel side beams 301 are symmetrically arranged in the middle of the frame 31, the lower end of the side bracket 12 is fixedly connected to the channel steel side beams 301, the lower support roller 16 of the roller assembly is installed between the two channel steel side beams 301 through the roller support 161, and the lower support roller 16 rolls and supports the conveyor belt 11 at the bottom. The frame 31 is tilted and supported by the legs 401 with increasing heights in sequence, and the upper ends of the legs 401 are fixedly connected to the channel steel side beams 301 through the connecting seat.

[0023] The anti-reversal mechanism 03 is installed on the frame 31 on the inner side of the active roller 21 in the roller assembly. The anti-reversal mechanism 03 includes a winding roller 33 and a reverse belt 34 installed between the upper ends of the two vertical brackets 32. A square rod-shaped positioning seat 35 is fixedly connected between the lower ends of the two vertical brackets 32. The reverse belt 34 is wound on the winding roller 33. The length of the reverse belt 34 wound on the winding roller 33 is used for unwinding. When the reverse belt 34 is insufficient in length due to wear, the wound reverse belt 34 is released to increase its length. The outer end of the reverse belt 34 bypasses the outer side surface of the positioning seat 35 and extends out after being horizontally close to the bottom surface of the positioning seat 35. The outer end of the extended part of the anti-return belt 34 is located at the angle between the conveyor belt 11 of the conveyor and the lower part of the active roller 21. When the conveyor belt operates normally clockwise, the anti-return belt 34 located at the lower angle will not be clamped between the active roller 21 and the conveyor belt. When the conveyor belt reverses counterclockwise, the anti-return belt 34 is clamped between the active roller 21 and the conveyor belt, and a clamping plate 36 is provided on the bottom surface of the positioning seat 35. The two ends of the clamping plate 36 are fixedly connected to the two ends of the positioning seat 35 by screws 37. The positioning seat 35 and the clamping plate 36 are used to clamp and fix the anti-return belt 34 to avoid the phenomenon that the winding roller 33 rotates due to tension.

[0024] The anti-return belt 34 between the positioning seat 35 and the driving roller 21 is in a bent state under force, and the bending length is the clamping length of the anti-return belt 34 when the conveyor belt is reversed.

[0025] The outer end of the roller shaft at one end of the winding roller 33 is a threaded shaft 331, which extends out of the vertical bracket 32. A nut 332 is installed on the threaded shaft 331. The winding roller 33 is tightened between the two vertical brackets 32 through the nut 332 and the threaded shaft 331 to lock the winding roller 33 and prevent it from rotating.

[0026] The corners of the positioning seat 35 are rounded to eliminate the sharp corners of the positioning seat 35 and reduce the wear of the positioning seat 35 on the anti-return belt 34. The material of the anti-return belt 34 is rubber with high strength and good flexibility.

[0027] A docking plate 321 is provided at the lower part of the outer side surface of the vertical bracket 32 ​​. The device is fixedly connected to the frame 31 via the docking plate 321 . The vertical bracket 32 ​​can be firmly connected to the frame 31 via the docking plate 321 .

[0028] The gravity adaptive cleaning mechanism 02 includes an inclined bracket 23 symmetrically arranged on two legs 401 at the front end of the frame 31, the lower end of the inclined bracket 23 is fixedly installed in the middle of the legs 401, the two inclined brackets 23 are located on both sides of the belt conveyor discharge nozzle 22, and a gravity adaptive scraper 242 mechanism is installed between the two inclined brackets 23. The mechanism includes two side rods 241 and scrapers 242 arranged symmetrically, and the middle parts of the two side rods 241 are respectively hinged to the outer ends of the two inclined brackets 23. A support rod 243 is connected between the inner ends of the side rods 241, through which the two side rods 241 are fixedly connected as a whole. The two side rods 241 can rotate synchronously. The scraper 242 is horizontally installed in the middle of the support plate. The upper end of the scraper 242 presses on the bottom surface of the front end of the conveyor belt 11. A counterweight block is provided at the outer end of the side rod 241. The large gravity generated by the counterweight block drives the scraper 242 at its inner end to lift up. The scraper 242 generates a constant upward tightening force to scrape off the material adhered to the surface of the conveyor belt 11.

[0029] A rotating support 25 is provided in the middle of the side rod 241, and the side rod 241 is connected to the rotating shaft 251 of the rotating support 25. The rotating support 25 is fixedly connected to the oblique bracket 23. One side of the rotating support 25 is fixedly connected to an angle iron seat 29 by bolts, and the angle iron seat 29 makes the rotating support 25 and the oblique bracket 23 more firmly fixedly connected.

[0030] The support rod 243 is a section of tubular body, and a tube clamp 26 is provided at the inner end of the side rod 241. The two ends of the support rod 243 are clamped in the two tube clamps 26. The connection structure of the support rod 243 is convenient for disassembly or assembly at the outer end of the side rod 241, so the scraper 242 on the support rod 243 can be easily replaced.

[0031] A fixed clamping plate 271 and a movable clamping plate 272 are provided in the middle of the support rod 243 . The fixed clamping plate 271 is fixedly connected to the support rod 243 . The scraper 242 is clamped between the fixed clamping plate 271 and the movable clamping plate 272 by bolts.

[0032] A plurality of reinforcing plates 28 are evenly arranged between the fixing clamping plate 271 and the support rod 243 . The reinforcing plates 28 ensure the connection strength of the fixing clamping plate 271 on the support rod 243 , thereby improving the stability of the scraper 242 .

[0033] The counterweight block includes a plurality of counterweight plates 244, which are fixed to the outer end of the side rod 241 by bolts. The pressing force of the scraper 242 can be changed by adjusting the number of counterweight plates 244 in the counterweight block, so that the pressing force of the scraper 242 can be adaptively adjusted for different materials.

[0034] The working process of the present invention is as follows: the first step is to start the belt conveyor 001 to tilt and lift the material, and let the material enter the conveying belt 11 from the feed hopper 302 at the bottom thereof. The material is blocked by the material baffle 18 at the rear at the moment it enters the conveying belt 11, so as to prevent the material from sliding off the tail of the conveying belt 11. The second step is to transport the material forward on the conveying belt 11. During this process, the flexible baffles 13 on both sides are pressed against the surfaces on both sides of the conveying belt 11 to form a blocking seal for the material. The material will not fall off from both sides of the conveying belt 11 due to the vibration or deviation of the conveying belt 11, and the sealing cover plate 14 and the side sealing plate 15 form a sealing shell on the outside of the conveying belt 11, which effectively controls the dust generated during the conveying process from diffusing outward. The third step is to connect the negative pressure pipe to the tail of the belt conveyor 001. The suction force of the negative pressure pipe creates a slight negative pressure in the sealed shell, and the dust is sucked away and enters the dust removal equipment, and no dust is generated at the discharge nozzle 22 at its front end; in the fourth step, during the feeding process, the deadweight of the counterweight blocks at the outer ends of the two side rods 241 drives the scraper 242 at the inner end of the side rod 241 to rise upward, and the scraper 242 generates a constant top pressure, which is pressed against the surface of the conveyor belt 11 to scrape off the adhered material, and an opening is provided on the inner side of the discharge nozzle 22, and the scraped material enters the discharge nozzle 22 from the opening and is discharged; in the fifth step, when the check belt 34 is insufficient in length due to long-term wear, first loosen the clamping plate 36 on the positioning seat 35, then loosen the nut 332 at the outer end of the winding roller 33, and then rotate the winding tube to unwind the check belt 34, adjust the check belt 34 to an appropriate length, and then tighten the nut 332 and the clamping plate 36.

Claims

1. A sealed belt conveyor, Its characteristics are: It includes a frame and a conveyor belt installed on a roller assembly in the frame, a sealing device is provided on the frame, and an anti-reversal mechanism and a gravity adaptive cleaning mechanism are installed on the frame where the conveyor belt has a short discharge; the sealing device includes a plurality of side brackets arranged at equal intervals on both sides of the frame, a leather baffle support is provided on the inner side of the upper end of the side bracket, a flexible leather baffle is obliquely fixedly installed between the plurality of leather baffle supports, and the outer side of the flexible leather baffle is pressed against the upper surface of the edge of the conveyor belt; a sealing cover plate with an isosceles trapezoidal cross-section is provided between the upper ends of the side brackets, and a side sealing plate is connected between the side brackets, the lower end of the side sealing plate extends to the lower support roller of the roller assembly, and the upper end of the side sealing plate is sealed and docked with the edge of the sealing cover plate.

2. A sealed belt conveyor according to claim 1, Its characteristics are: A baffle support is provided on one side of the feed inlet at the rear of the frame, and a material baffle is vertically fixedly connected to the baffle support, and the lower end of the material baffle is close to the surface of the conveyor belt at the feed inlet.

3. A sealed belt conveyor according to claim 1, Its characteristics are: A square tube is fixedly installed between the upper end surfaces of the plurality of side brackets, the side portion of the sealing cover plate is fixedly connected to the surface of the square tube, and the upper end of the side sealing plate is fixedly connected to the outer side surface of the square tube.

4. A sealed belt conveyor according to claim 1, Its characteristics are: The anti-reversal mechanism is installed on the frame inside the active roller in the roller assembly, and the anti-reversal mechanism includes a winding roller and a check belt installed between the upper ends of the two vertical brackets. A square rod-shaped positioning seat is fixedly connected between the lower ends of the two vertical brackets. The check belt is wound on the winding roller, and the outer end of the check belt bypasses the outer side surface of the positioning seat and extends out after being horizontally pressed against the bottom surface of the positioning seat. The outer end of the extended part of the check belt is located at the angle between the conveyor belt of the conveyor and the lower part of the active roller, and a clamping plate is provided on the bottom surface of the positioning seat, and the two ends of the clamping plate are fixedly connected to the two ends of the positioning seat by screws.

5. A sealed belt conveyor according to claim 4, Its characteristics are: The outer end of the roller shaft at one end of the winding roller is a threaded shaft, the threaded shaft extends out of the vertical bracket, and a nut is installed on the threaded shaft.

6. A sealed belt conveyor according to claim 1, Its characteristics are: The gravity adaptive cleaning mechanism includes inclined brackets symmetrically arranged on the two legs at the front end of the frame, the two inclined brackets are located on both sides of the belt conveyor discharge nozzle, and a gravity adaptive scraper mechanism is installed between the two inclined brackets. The mechanism includes symmetrically arranged two side rods and scrapers, the middle parts of the two side rods are respectively hinged to the outer ends of the two inclined brackets, a support rod is connected between the inner ends of the two side rods, the scraper is horizontally installed in the middle part of the support plate, the upper end of the scraper is pressed against the bottom surface of the front end of the conveyor belt, and a counterweight block is provided at the outer end of the side rod.

7. A sealed belt conveyor according to claim 6, Its characteristics are: A rotating support is provided in the middle of the side rod, the side rod is connected to the rotating shaft of the rotating support, and the rotating support is fixedly connected to the oblique bracket.

8. A sealed belt conveyor according to claim 6, Its characteristics are: The support rod is a section of pipe body, a pipe clamp is arranged at the inner end of the side rod, and the two ends of the support rod are clamped in the two pipe clamps.

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