Coal conveying anti-blocking cleaning device for thermal power plant

Abstract

The coal conveying anti-blocking cleaning device comprises an anti-blocking flow limiting block and a conveying belt, inclined baffles are symmetrically and fixedly connected to the upper face of the conveying belt, the anti-blocking flow limiting block is fixedly connected between the two inclined baffles, and the inclined baffles are attached to the outer walls of the two sides of the anti-blocking flow limiting block; a guide slope is arranged at the position, close to the edge of the front end, of the upper face of the anti-blocking flow limiting block, an installation sliding groove is formed in the guide slope, a flow limiting guide plate is installed in the installation sliding groove in a sliding mode, and a discharging inclined groove is formed in the position, close to the edge of the rear face, of the upper face of the anti-blocking flow limiting block. The anti-blocking flow limiting block is fixed between the inclined baffles and located above the conveying belt, the anti-blocking flow limiting block can limit the thickness of coal on the conveying belt, and the situation that rear equipment is blocked and choked due to the fact that the amount of the coal conveyed and fed by the conveying belt is too large is avoided firstly; and the coal on the guide slope is not pushed and naturally falls onto the conveying belt, so that the conveying belt can uniformly convey the coal.

Description

Technical Field

[0001] The invention relates to an anti-blocking and cleaning device, in particular to an anti-blocking and cleaning device for coal transportation in a thermal power plant. Background Art

[0002] In thermal power generation, coal needs to be transported through a belt conveyor. During the coal transportation process, a belt coal conveyor is often used. When the coal transportation volume on the conveyor belt is too large, it will cause the back-end processing equipment to feed too much, causing the equipment to get stuck, and then an anti-blocking device needs to be used.

[0003] For example, the Chinese patent publication number CN215923414U discloses an anti-blocking device for a coal conveyor belt in a power plant, comprising a conveyor trough and a second rotating rod; the bottom end of the conveyor trough is connected to a rotating roller that rotates from left to right, the outer side of the rotating roller is connected to a conveyor belt through a transmission, a servo motor is fixedly installed on the left side of the upper surface of the conveyor trough, the motor shaft of the servo motor is fixedly connected to the first rotating rod, a funnel-shaped feed trough is installed through the left end of the upper surface of the conveyor trough, and mounting slots are provided in the middle of the lower ends of the left and right inner walls of the feed trough. The utility model can control the coal conveying amount of the conveyor belt through the combination of the servo motor, the first rotating rod, and the adjustment plate to prevent excessive accumulation of coal on the conveyor belt and cause blockage. The combination of the first pulley, the second pulley, the transmission belt, the second rotating rod, the fan, and the filter can automatically clean the coal dust in the feed trough during the coal conveying process. However, this patent has the following problems:

[0004] First, the device can only limit the amount of coal falling, but cannot sort the coal on the conveyor belt. When the coal dumping speed is too fast, a large amount of coal will accumulate inside the feed chute and cannot be quickly digested, and the coal may overflow in the feed chute.

[0005] Second, the device uses an adjustment plate to control the falling speed of the coal. When too much coal accumulates in the feed chute and there is no auxiliary falling mechanism, the coal is easily stuck in the gap between the adjustment plate and the inside of the feed chute, resulting in the problem of not being able to fall normally. Summary of the Invention

[0006] The purpose of the present invention is to provide a coal conveying anti-blocking and cleaning device for a thermal power plant to solve the existing problems raised in the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a coal conveying anti-blocking and cleaning device for a thermal power plant, comprising an anti-blocking and flow-limiting block and a conveyor belt, wherein inclined baffles are symmetrically fixed on the conveyor belt, the anti-blocking and flow-limiting block is fixed between the two inclined baffles, and the outer walls on both sides of the anti-blocking and flow-limiting block are fitted with the inclined baffles, a guide slope is provided on the anti-blocking and flow-limiting block near the front end edge, an installation slide is provided on the guide slope, a flow-limiting guide plate is slidably installed in the installation slide, a discharge chute is provided on the anti-blocking and flow-limiting block near the rear edge, and the inner bottom surface of the discharge chute is inclined outward.

[0008] Preferably, baffles are fixedly connected to both sides of the anti-blocking and flow-limiting block, and the lower side of the baffles fits the upper side of the inclined baffles.

[0009] Preferably, a limiting slide groove is provided in the installation slide groove, a limiting installation block is fixedly connected to the lower side of the current limiting guide plate, and the limiting slide groove is slidably matched with the limiting installation block.

[0010] Preferably, a mounting hole is provided in the limiting sliding groove, a rotating disk is mounted in the mounting hole through axial symmetrical rotation, and an eccentric shaft is fixedly connected between the two rotating disks.

[0011] Preferably, a driving motor is fixedly connected inside the anti-blocking and current-limiting block, and a side surface of the eccentric shaft on one side is fixedly connected to an output end of the driving motor.

[0012] Preferably, a limit adjustment groove is provided below the limit installation block, and a T-shaped limit sliding block is slidably installed in the limit adjustment groove.

[0013] Preferably, a snap-fit groove is provided under the T-shaped limiting sliding block, and the snap-fit groove cooperates with the eccentric shaft.

[0014] Preferably, a threaded adjustment rod is rotatably installed in the limit adjustment groove, and a hexagonal groove is provided at the end of the threaded adjustment rod.

[0015] Preferably, a threaded through hole is provided in the T-shaped limiting slider, and the threaded through hole is threadably matched with the threaded adjusting rod.

[0016] Preferably, a longitudinal unloading plate is fixedly connected to one side of the anti-blocking and flow-limiting block, and the longitudinal unloading plate is communicated with the interior of the discharge chute.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By fixing the anti-blocking and flow-limiting blocks between the inclined baffles and above the conveyor belt, the anti-blocking and flow-limiting blocks will limit the thickness of the coal on the conveyor belt, so that the thickness of the coal cannot exceed the height of the anti-blocking and flow-limiting blocks. The coal on the conveyor belt that is higher than the anti-blocking and flow-limiting blocks will be scraped off by the anti-blocking and flow-limiting blocks and pushed to the guide slope for temporary storage. First, it avoids the conveyor belt from feeding too much coal, which may cause blockage of the rear equipment. When the thickness of the coal on the conveyor belt is too low, the coal on the guide slope will naturally fall onto the conveyor belt without being pushed, so that the conveyor belt can transport the coal evenly.

[0019] 2. By starting the rotating disk to drive the eccentric shaft to rotate, the eccentric shaft can drive the current limiting guide plate to move back and forth in a small range through the T-shaped limit slider, generating a certain vibration to assist the coal to slide off the current limiting guide plate, thereby preventing the coal from being blocked on the current limiting guide plate.

[0020] 3. When the coal conveying volume on the conveyor belt is continuously too large, the coal will be pushed over the guide slope and fall into the discharge chute. The discharge chute and the extended unloading plate can be used to discharge the coal to one side, clearing the excess coal from the entire conveying mechanism, avoiding the problem of too much coal on the guide slope of the device being unable to accommodate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is the front view of the present invention;

[0023] Figure 3 is a cross-sectional view of the present invention;

[0024] Figure 4 This is an exploded view of the anti-blocking current limiting block of the present invention;

[0025] Figure 5 This is an exploded view of the current limiting guide plate of the present invention.

[0026] In the figure: 1. Anti-blocking flow-limiting block; 101. Baffle; 2. Guide slope; 201. Mounting chute; 202. Limiting chute; 203. Mounting hole; 204. Drive motor; 205. Rotating disk; 206. Eccentric shaft; 3. Current-limiting guide plate; 301. Limiting mounting block; 302. Limiting adjustment groove; 303. Threaded adjustment rod; 304. Hexagonal groove; 4. T-type limiting slider; 401. Threaded through hole; 402. Clamping groove; 5. Discharge chute; 501. Extended unloading plate; 6. Conveyor belt; 601. Oblique baffle. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figure 1-5 As shown, the present invention has the following specific embodiments.

[0029] Example 1

[0030] A coal conveying anti-blocking and cleaning device for a thermal power plant comprises an anti-blocking and flow-limiting block 1 and a conveyor belt 6. Oblique baffles 601 are symmetrically fixed on the conveyor belt 6. The anti-blocking and flow-limiting block 1 is fixed between the two oblique baffles 601. The outer walls on both sides of the anti-blocking and flow-limiting block 1 fit the oblique baffles 601. A guide slope 2 is provided on the anti-blocking and flow-limiting block 1 near the front end edge. An installation chute 201 is provided on the guide slope 2. A flow-limiting guide plate 3 is slidably installed in the installation chute 201. A discharge chute 5 is provided on the anti-blocking and flow-limiting block 1 near the rear edge. The inner bottom surface of the discharge chute 5 is inclined outward.

[0031] In this embodiment, the anti-blocking and flow-limiting block 1 is installed between the inclined baffles 601 and is located above the conveyor belt 6. When the conveyor belt 6 is used to transport coal, the coal is located on the conveyor belt 6 and moves backward with the rotation of the belt. When passing the anti-blocking and flow-limiting block 1, the anti-blocking and flow-limiting block 1 will limit the thickness of the coal on the conveyor belt 6, so that the thickness of the coal cannot exceed the height of the anti-blocking and flow-limiting block 1. The coal on the conveyor belt 6 that is higher than the anti-blocking and flow-limiting block 1 will be scraped off by the anti-blocking and flow-limiting block 1 and pushed onto the guide slope 2. First, since the guide slope 2 is an inclined surface, when the thickness of the coal on the conveyor belt 6 is too low, the coal on the guide slope 2 will lose the push and naturally fall onto the conveyor belt 6, so that the conveyor belt 6 can transport the coal evenly, avoiding blockage and choking of the machine caused by excessive coal feed, and the flow-limiting guide plate 3 slides Installed inside the guide slope 2, the flow limiting guide plate 3 can move forward and backward. When the flow limiting guide plate 3 moves forward, the front end of the flow limiting guide plate 3 will extend. At this time, the flow limiting guide plate 3 will further limit the thickness of the coal output on the conveyor belt 6, and then by adjusting the position of the flow limiting guide plate 3, the thickness of the coal transported by the conveyor belt 6 can be adjusted according to demand. However, when the coal transportation volume on the conveyor belt 6 continues to be too large, the coal scraped off the guide slope 2 continues to increase. At this time, the coal will be pushed over the guide slope 2 and fall into the inside of the discharge chute 5. The bottom surface of the discharge chute 5 is also a slope and tilted outward, and then the excess coal will be directly discharged through the discharge chute 5, and the excess coal will be cleaned out of the entire conveying mechanism, avoiding the problem of too much coal on the guide slope 2 of the device and cannot be accommodated.

[0032] Example 2

[0033] Baffles 101 are fixed on both sides of the anti-blocking and current-limiting block 1, and the baffle 101 is fitted on the upper surface of the inclined baffle 601. A limited slide groove 202 is provided in the mounting slide groove 201, and a limited mounting block 301 is fixed to the lower side of the current-limiting guide plate 3. The limited slide groove 202 slides with the limited mounting block 301, and a mounting hole 203 is provided in the limited slide groove 202. A rotating disk 205 is installed in the mounting hole 203 through axial symmetrical rotation. An eccentric shaft 206 is fixed between the two rotating disks 205. A drive motor 204 is fixed to the anti-blocking and current-limiting block 1, and one side of the eccentric shaft 206 is fixed to the output end of the drive motor 204. A limited adjustment groove 302 is provided under the limit mounting block 301, and a T-shaped limit slider 4 is slidably installed in the limit adjustment groove 302. A clamping groove 402 is provided under the T-shaped limit slider 4, and the clamping groove 402 cooperates with the eccentric shaft 206.

[0034] In this embodiment, the baffle 101 can prevent the coal pushed onto the anti-blocking flow limiting block 1 from falling from both sides. The limiting chute 202 and the limiting mounting block 301 are slidably matched, and the flow limiting guide plate 3 can be slidably installed inside the guide slope 2. At the same time, the length of the limiting mounting block 301 is shorter than the length of the limiting chute 202. Figure 3 As shown, the limit mounting block 301 can move back and forth inside the limit slide groove 202, and starting the drive motor 204 can drive the rotating disk 205 to rotate. The rotation of the rotating disk 205 can drive the eccentric shaft 206 to rotate in a circle. The eccentric shaft 206 cooperates with the clamping groove 402, and then the rotation of the eccentric shaft 206 can drive the T-shaped limit slider 4 to move back and forth. The movement of the T-shaped limit slider 4 can drive the current limiting guide plate 3 to move, so that the current limiting guide plate 3 continuously moves back and forth in a small amplitude, generating a certain vibration, which helps the coal material slide off the current limiting guide plate 3.

[0035] Example 3

[0036] A threaded adjustment rod 303 is rotatably installed in the limit adjustment groove 302, and a hexagonal groove 304 is provided at the end of the threaded adjustment rod 303. A threaded through hole 401 is provided in the T-shaped limit slider 4, and the threaded through hole 401 is threadedly matched with the threaded adjustment rod 303. A longitudinal unloading plate 501 is fixedly connected to one side of the anti-blocking and flow limiting block 1, and the longitudinal unloading plate 501 is communicated with the inside of the discharge chute 5.

[0037] In this embodiment, the threaded adjustment rod 303 can be driven to rotate by using an internal angle wrench through the hexagonal groove 304. The threaded adjustment rod 303 is threadedly matched with the threaded through hole 401. The rotation of the threaded adjustment rod 303 can drive the T-shaped limit slider 4 and the flow limiting guide plate 3 to move relative to each other, and the T-shaped limit slider 4 is stuck in the limiting slide groove 202 and is limited by the eccentric shaft 206. At this time, the flow limiting guide plate 3 will move, thereby controlling the extension distance of the flow limiting guide plate 3 and adjusting the thickness of the coal transported on the conveyor belt 6.

[0038] The working principle and use process of the present invention are as follows: during use, the conveyor belt 6 is normally used to convey the coal. When the coal passes through the anti-blocking flow-limiting block 1, the flow-limiting guide plate 3 and the front angle of the anti-blocking flow-limiting block 1 are used to scrape off the excessively thick coal on the conveyor belt 6. The scraped coal will be pushed by the coal behind to the guide slope 2 and the flow-limiting guide plate 3 for temporary storage. When the thickness of the coal on the conveyor belt 6 is too low, the coal on the guide slope 2 will lose the pushing force and will naturally fall onto the conveyor belt 6, so that the conveyor belt 6 can evenly transport the coal. The rotating disk 205 is started with The movable eccentric shaft 206 rotates, and the eccentric shaft 206 can drive the T-shaped limit slider 4 to make reciprocating motion, and the T-shaped limit slider 4 can synchronously drive the flow limiting guide plate 3 to move. The reciprocating motion of the flow limiting guide plate 3 can help the coal above to slide back onto the conveyor belt 6, avoiding the coal from being blocked on the flow limiting guide plate 3. When too much coal is temporarily stored on the guide slope 2 and the flow limiting guide plate 3, the coal will be pushed over the guide slope 2 and fall into the discharge chute 5. The discharge chute 5 and the extended unloading plate 501 can be used to discharge the coal to one side.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A coal conveying anti-blocking and cleaning device for a thermal power plant, comprising an anti-blocking and current limiting block (1) and a conveyor belt (6), wherein inclined baffles (601) are symmetrically fixed on the conveyor belt (6), characterized in that: The anti-blocking flow-limiting block (1) is fixedly connected between the two oblique baffles (601), and the outer walls on both sides of the anti-blocking flow-limiting block (1) are in contact with the oblique baffles (601). A guide slope (2) is provided on the anti-blocking flow-limiting block (1) near the front edge, and a mounting chute (201) is provided on the guide slope (2). A flow-limiting guide plate (3) is slidably installed in the mounting chute (201). A discharge chute (5) is provided on the anti-blocking flow-limiting block (1) near the rear edge, and the inner bottom surface of the discharge chute (5) is inclined outward.

2. The device for preventing and cleaning coal transportation in a thermal power plant according to claim 1, characterized in that: Baffles (101) are fixedly connected to both sides of the anti-blocking and current-limiting block (1), and the lower side of the baffle (101) is in contact with the upper side of the inclined baffle (601).

3. The device for preventing and cleaning coal transportation in a thermal power plant according to claim 1, characterized in that: A limiting sliding groove (202) is provided in the installation sliding groove (201), a limiting installation block (301) is fixedly connected below the flow limiting guide plate (3), and the limiting sliding groove (202) and the limiting installation block (301) are slidably matched.

4. The device for preventing and cleaning coal transportation in a thermal power plant according to claim 3, characterized in that: A mounting hole (203) is provided in the position-limiting sliding groove (202), a rotating disk (205) is mounted in the mounting hole (203) through axial symmetrical rotation, and an eccentric shaft (206) is fixedly connected between the two rotating disks (205).

5. The device for preventing and cleaning coal transportation in a thermal power plant according to claim 4, characterized in that: A driving motor (204) is fixedly connected inside the anti-blocking current limiting block (1), and a side surface of the eccentric shaft (206) is fixedly connected to an output end of the driving motor (204).

6. The device for preventing and cleaning coal transportation in a thermal power plant according to claim 3, characterized in that: A limit adjustment groove (302) is provided below the limit installation block (301), and a T-shaped limit sliding block (4) is slidably installed in the limit adjustment groove (302).

7. The device for preventing and cleaning coal transportation in a thermal power plant according to claim 6, characterized in that: A snap-fit groove (402) is provided below the T-shaped limiting slider (4), and the snap-fit groove (402) cooperates with the eccentric shaft (206).

8. The device for preventing and cleaning coal transportation in a thermal power plant according to claim 7, characterized in that: A threaded adjustment rod (303) is rotatably mounted in the position limiting adjustment groove (302), and a hexagonal groove (304) is provided at the end of the threaded adjustment rod (303).

9. The device for preventing and cleaning coal transportation in a thermal power plant according to claim 8, characterized in that: A threaded through hole (401) is provided in the T-shaped limiting slider (4), and the threaded through hole (401) is threadably matched with the threaded adjustment rod (303).

10. The device for preventing and cleaning coal conveying in a thermal power plant according to claim 1, characterized in that: A longitudinal unloading plate (501) is fixedly connected to one side of the anti-blocking flow-limiting block (1), and the longitudinal unloading plate (501) is communicated with the interior of the discharge chute (5).

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