Particle filtering and recycling device for coal conveying pipeline of power plant

Abstract

The power plant coal conveying pipeline particle filtering and recycling device comprises a cross-shaped support, a first limiting sliding groove is formed in the cross-shaped support, a first limiting sliding block is installed in the first limiting sliding groove in a sliding mode, and a rotating motor is fixedly connected to the rear portion of the first limiting sliding block; the output end of the rotating motor penetrates through the first limiting sliding block to be fixedly connected with a screening pipe, a filter screen is fixedly connected into the screening pipe, sealing sleeves are vertically and symmetrically connected to the screening pipe in a sleeved mode, connecting pipes are vertically and symmetrically fixedly connected to the front face of the cross-shaped support through a support, and the sealing sleeves are matched with the connecting pipes. A first air cylinder is fixedly connected into the first limiting sliding groove. The first air cylinder is started to drive the screening pipe to move, then the rotating motor is used for driving the screening pipe to rotate, the screening pipe is made to be inverted, then coal particles screened in the screening pipe are poured into the collecting box, and discharging, recycling and reusing of the screened coal particles can be automatically completed.

Description

Technical Field

[0001] The present invention relates to a particle filtration and recovery device, and particularly to a particle filtration and recovery device for a coal conveying pipeline in a power plant. Background Art

[0002] In traditional thermal power plants, coal combustion is usually used for power generation. In order to ensure the combustion efficiency of coal, the coal needs to be crushed into coal powder less than 0.1 mm, so that oxygen can more easily penetrate into the fuel interior, accelerating the combustion reaction rate. Complete combustion can reduce the residual unburned carbon, avoid waste of resources, and full combustion can also reduce the emission of harmful gases such as carbon monoxide in the flue gas, alleviating environmental pollution. Therefore, during the coal pulverization and transportation process, the coal will be filtered to remove the coal cinder that is not easy to burn fully.

[0003] For example, a coal powder conveying filter with the publication number of CN208728007U disclosed in the Chinese patent includes a filter housing. An inlet coal port is arranged on the right side of the filter housing, an outlet coal port is arranged on the left side of the filter housing, a mounting seat is arranged on the front side of the filter body, the mounting seat is communicated with the front side of the filter body, a sealing door is arranged on the front side of the mounting seat, both the upper end and the lower end of the sealing door are movably connected with locking fasteners by screws, the sealing door is hermetically connected with the mounting seat through the locking fasteners, and a filter screen is arranged inside the filter body. Through the mutual cooperation among the mounting seat, the sealing door, the locking fasteners and the filter screen, the present invention is convenient for filtering out the coal powder blocks that do not meet the size in the powder to be filtered, ensuring that the coal powder meets the use requirements before entering the burner, ensuring stable combustion, and can also extract the filter screen for timely cleaning. With the wavy edge, it is beneficial for conveying, avoiding blockage and improving the conveying efficiency. However, this patent has the following problems:

[0004] First, after separating the lumpy coal mixed in the coal powder by using the filter screen, it is necessary to manually convey the separated coal out.

[0005] Second, when maintaining the filter screen, repeated disassembly and assembly are very inconvenient, and the maintenance time cost is relatively high. Summary of the Invention

[0006] The purpose of the present invention is to provide a particle filtration and recovery device for a coal conveying pipeline in a power plant to solve the problems presented in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A granular filtration and recovery device for a coal conveying pipeline in a power plant, including a cross bracket, a first limiting chute is provided in the cross bracket, a first limiting slider is slidably installed in the first limiting chute, a rotary motor is fixedly connected to the back of the first limiting slider, the output end of the rotary motor passes through the first limiting slider and is fixedly connected to a sieve pipe, a filter screen is fixedly connected in the sieve pipe, sealing sleeves are symmetrically sleeved on the upper and lower sides of the sieve pipe, connecting pipes are symmetrically fixedly connected to the front of the cross bracket through brackets, the sealing sleeves are matched with the connecting pipes, a first cylinder is fixedly connected in the first limiting chute, the other end of the first cylinder is fixedly connected to the first limiting slider, a collection box is arranged on one side of the sieve pipe, an L-shaped bracket is fixedly connected to the upper surface of the cross bracket cross bar, and a blower sleeve is fixedly connected to the other end of the L-shaped bracket.

[0008] Preferably, a support convex edge is fixedly connected to the outer wall of the sieve pipe, and third cylinders are fixedly connected to both the upper and lower surfaces of the support convex edge.

[0009] Preferably, a connecting support leg is fixedly connected to one side of the sealing sleeve, and the other end of the third cylinder is fixedly connected to the connecting support leg.

[0010] Preferably, a first rubber contact edge is fixedly connected to the other end of the sealing sleeve, a second rubber contact edge is fixedly connected to the lower edge of the connecting pipe, and the second rubber contact edge is matched with the first rubber contact edge.

[0011] Preferably, a connecting flange is fixedly connected to the upper edge of the connecting pipe, and a second limiting chute is provided in the cross bracket and on one side of the first limiting chute.

[0012] Preferably, a second cylinder is fixedly connected in the second limiting chute, the other end of the second cylinder is fixedly connected to a second limiting slider, and a connecting frame is fixedly connected to the front of the second limiting slider.

[0013] Preferably, a plugging slot is provided in the connecting pipe, a plugging plate is slidably installed in the plugging slot, and one side of each of the two connecting frames is fixedly connected to both ends of the connecting frame.

[0014] Preferably, a power motor is fixedly connected in the blower sleeve through a bracket, and the output end of the power motor is connected to the blower blades.

[0015] Preferably, a third rubber contact edge is fixedly connected to the lower edge of the blower sleeve, and the third rubber contact edge is matched with the first rubber contact edge.

[0016] Preferably, water delivery pipes are symmetrically fixedly connected to the front and back inner walls of the collection box, and a plurality of atomizing nozzles are fixedly connected to the collection box.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. By starting the first cylinder to drive the sieve pipe to move, and then using the rotating motor to drive the sieve pipe to rotate, the sieve pipe is inverted, and then the coal particles screened inside the sieve pipe are poured into the collection box, which can automatically complete the discharge, recovery and reuse of the screened coal particles.

[0019] 2. By driving the blower blades to rotate with the power motor, the outside air is blown into the sieve pipe, and the particles in the pores of the filter screen are blown away, avoiding the blockage of the pores in the filter screen and extending the service life maintenance interval of the filter screen.

[0020] 3. Using the water supply mechanism to transport clean water to the water delivery pipe, the atomizing nozzle will atomize the clean water, avoiding the diffusion of coal powder when pouring out the coal particles and creating a healthy production environment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 is a schematic diagram of the overall structure of the other side of the present invention;

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

[0024] Figure 4 is a schematic diagram of the sieve pipe and the seal sleeve structure of the present invention;

[0025] Figure 5 is a schematic diagram of the blower sleeve structure of the present invention.

[0026] In the figure: 1. Cross bracket; 101. First limit chute; 102. First cylinder; 103. Second limit chute; 104. Second cylinder; 2. Sieve pipe; 201. Support flange; 202. Third cylinder; 203. Filter screen; 204. First limit slider; 205. Rotating motor; 3. Seal sleeve; 301. Connecting support foot; 302. First rubber contact edge; 4. Connecting pipe; 401. Connecting flange; 402. Second rubber contact edge; 404. Insertion plugging groove; 405. Insertion plugging plate; 406. Connecting frame; 407. Second limit slider; 5. Blower sleeve; 501. Third rubber contact edge; 502. Power motor; 503. Blower blades; 504. L-shaped bracket; 6. Collection box; 601. Water delivery pipe; 602. Atomizing nozzle. DETAILED DESCRIPTION OF THE INVENTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

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

[0029] Embodiment 1

[0030] A granular filtration and recovery device for a coal conveying pipeline in a power plant, comprising a cross support 1. A first limit chute 101 is provided inside the cross support 1. A first limit slider 204 is slidably installed in the first limit chute 101. A rotary motor 205 is fixedly connected to the back of the first limit slider 204. The output end of the rotary motor 205 passes through the first limit slider 204 and is fixedly connected to a sieve pipe 2. A filter screen 203 is fixedly connected inside the sieve pipe 2. Sealing sleeves 3 are symmetrically sleeved on the upper and lower sides of the sieve pipe 2. Connecting pipes 4 are symmetrically and fixedly connected to the front of the cross support 1 through supports. The sealing sleeves 3 cooperate with the connecting pipes 4. A first cylinder 102 is fixedly connected inside the first limit chute 101. The other end of the first cylinder 102 is fixedly connected to the first limit slider 204. A collection box 6 is arranged on one side of the sieve pipe 2. An L-shaped support 504 is fixedly connected to the upper surface of the cross bar of the cross support 1. The other end of the L-shaped support 504 is fixedly connected to a blast sleeve 5.

[0031] In this embodiment, the coal powder conveying pipelines are respectively connected through the connecting pipes 4. By using the cooperation between the sealing sleeves 3 and the connecting pipes 4, the connecting pipes 4 are connected to the sieve pipe 2. The coal powder will pass through the sieve pipe 2 from the upper end and be discharged from the lower end. The filter screen 203 inside the sieve pipe 2 will intercept the large particles in the coal powder and temporarily store them inside the sieve pipe 2. The sealing sleeves 3 are slidably sleeved at both ends of the sieve pipe 2. Control the two sealing sleeves 3 to move closer to each other. At this time, the connection between the sealing sleeves 3 and the connecting pipes 4 will be separated. Start the first cylinder 102 to drive the first limit slider 204 to move. The movement of the first limit slider 204 can drive the sieve pipe 2 to move, so that the sieve pipe 2 and the sealing sleeves 3 move above the collection box 6. At this time, start the rotary motor 205 to drive the sieve pipe 2 to rotate. After the sieve pipe 2 rotates 180 degrees, the sieve pipe 2 is completely inverted. The coal particles temporarily stored in the sieve pipe 2 will directly fall into the collection box 6 for storage. Then control the device to reset, and the filtered coal particles can be automatically taken out, recycled and reused.

[0032] Embodiment 2

[0033] As Figure 1 、 3As shown in FIGS. 4, a support convex edge 201 is fixedly connected to the outer wall of the sieve pipe 2. Third cylinders 202 are fixedly connected to both the upper and lower surfaces of the support convex edge 201. A connecting support leg 301 is fixedly connected to one side of the sealing sleeve 3. The other end of the third cylinder 202 is fixedly connected to the connecting support leg 301. A first rubber contact edge 302 is fixedly connected to the other end of the sealing sleeve 3. A second rubber contact edge 402 is fixedly connected to the lower edge of the connecting pipe 4. The second rubber contact edge 402 cooperates with the first rubber contact edge 302. A connecting flange 401 is fixedly connected to the upper edge of the connecting pipe 4. A second limiting chute 103 is provided inside the cross-shaped bracket 1 and on one side of the first limiting chute 101. A second cylinder 104 is fixedly connected inside the second limiting chute 103. The other end of the second cylinder 104 is fixedly connected to a second limiting slider 407. A connecting frame 406 is fixedly connected to the front surface of the second limiting slider 407. An insertion blocking groove 404 is provided inside the connecting pipe 4. An insertion blocking plate 405 is slidably installed inside the insertion blocking groove 404. One side of the two connecting frames 406 is respectively fixedly connected to both ends of the connecting frame 406.

[0034] In this implementation scheme, the support convex edge 201 and the connecting support leg 301 are respectively connected by the third cylinders 202. Synchronously starting the third cylinders 202 can drive the movement of the connecting support leg 301. The movement of the connecting support leg 301 will further drive the movement of the sealing sleeve 3, which is used to control the up and down movement of the sealing sleeve 3. The first rubber contact edge 302 and the second rubber contact edge 402 cooperate with each other. When the sealing sleeve 3 drives the first rubber contact edge 302 to fit the second rubber contact edge 402, the gap at the connection between the sealing sleeve 3 and the connecting pipe 4 can be sealed, enabling the coal to be smoothly transported from the connecting pipe 4 to the inside of the sealing sleeve 3 and the sieve pipe 2. Starting the second cylinder 104 can drive the movement of 207. 207 can drive the movement of 206. The movement of 206 will synchronously drive the movement of the rotary motor 205. The rotary motor 205 is inserted into the first limiting slider 204, which can block the inside of the connecting pipe 4, preventing the connecting pipe 4 from continuously discharging coal when the sieve pipe 2 moves and tilts the coal particles inside. The connecting flange 401 facilitates the connection of the device to the pulverized coal conveying pipeline.

[0035] Example 3

[0036] As Figure 1 、 3 、5 shows, a power motor 502 is fixedly connected inside the air blowing sleeve 5 through a bracket. The output end of the power motor 502 is connected to the air blowing blades 503. A third rubber contact edge 501 is fixedly connected to the lower edge of the air blowing sleeve 5. The third rubber contact edge 501 cooperates with the first rubber contact edge 302. Water pipes 601 are symmetrically fixedly connected to the front and back inner walls of the collection box 6. A number of atomizing nozzles 602 are fixedly connected to the collection box 6.

[0037] In this embodiment, starting the power motor 502 can drive the blower blade 503 to rotate. The rotation of the blower blade 503 can suck air and transport it into the sieve pipe 2, and then blow the filter screen 203 in the inverted sieve pipe 2 to keep the filter screen 203 unobstructed, extend the service life maintenance interval of the filter screen 203. The water delivery pipe 601 can be connected to a water supply mechanism. The water supply mechanism is used to transport clear water to the water delivery pipe 601, and the water delivery pipe 601 will transport the clear water to the atomizing nozzle 602. The atomizing nozzle 602 will atomize and spray the clear water into the collection box 6 to prevent coal powder from spreading when pouring coal particles.

[0038] The working principle and usage process of the present invention: When in use, it is necessary to connect with the coal conveying pipeline through the connecting flange 401, and connect the two connecting pipes 4 to the input and output pipelines respectively. Then, the coal powder will pass through the connecting pipe 4, the sealing sleeve 3, and the sieve pipe 2 and then be discharged into the coal conveying pipeline again. When passing through the inside of the sieve pipe 2, the filter screen 203 in the sieve pipe 2 will intercept the large particles in the coal powder. When a certain amount of coal particles are stored in the sieve pipe 2, it is necessary to first start the second cylinder 104 to drive the second limit slider 407 to move. The movement of the second limit slider 407 can drive the connecting frame 406 to move, and then drive the plugging plate 405 to insert into the plugging slot 404 to block the inside of the connecting pipe 4 and terminate the transportation of the coal powder. Start the third cylinder 202 to drive the two sealing sleeves 3 to approach each other, separating the first rubber contact edge 302 from the second rubber contact edge 402. Start the first cylinder 102 to drive the first limit slider 204 to move. The movement of the first limit slider 204 will drive the sieve pipe 2 to move so that the sieve pipe 2 moves above the collection box 6. Then start the rotating motor 205 to drive the sieve pipe 2 to rotate. After the sieve pipe 2 rotates 180 degrees, the sieve pipe 2 is completely inverted at this time. The coal particles temporarily stored in the sieve pipe 2 will fall from the inside of the sieve pipe 2 directly into the collection box 6 for storage. Start the third cylinder 202 to drive the sealing sleeve 3 to move upward so that the connecting support foot 301 fits together with the third rubber contact edge 501. Start the power motor 502 to drive the blower blade 503 to rotate, and then blow the outside air into the sieve pipe 2 to blow away the particles in the pores of the filter screen 203. Use the water supply mechanism to transport clear water to the water delivery pipe 601, and the atomizing nozzle 602 will atomize the clear water to prevent coal powder from spreading when pouring and discharging coal particles.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A particle filtering and recovery device for a coal pipeline in a power plant, comprising a cross bracket (1), characterized in that: The cross bracket (1) is provided with a first limiting sliding groove (101), a first limiting sliding block (204) is slidably installed in the first limiting sliding groove (101), a rotating motor (205) is fixedly connected to the rear of the first limiting sliding block (204), an output end of the rotating motor (205) passes through the first limiting sliding block (204) and is fixedly connected to a screen pipe (2), a filter screen (203) is fixedly connected to the screen pipe (2), a sealing sleeve (3) is symmetrically sleeved on the upper and lower sides of the screen pipe (2), and the cross bracket (1) A connecting pipe (4) is symmetrically fixed to the front through a bracket in the upper and lower directions, the sealing sleeve (3) and the connecting pipe (4) cooperate with each other, a first cylinder (102) is fixed in the first limiting slide groove (101), the other end of the first cylinder (102) is fixed to the first limiting slide block (204), a collecting box (6) is arranged on one side of the screening tube (2), an L-shaped bracket (504) is fixed on the cross bar of the cross bracket (1), and the other end of the L-shaped bracket (504) is fixed to the blast sleeve (5).

2. The particle filtering and recovery device for coal pipeline in a power plant according to claim 1, characterized in that: The outer wall of the screening tube (2) is fixedly connected with a supporting flange (201), and the upper and lower surfaces of the supporting flange (201) are both fixedly connected with a third cylinder (202).

3. The particle filtering and recovery device for coal pipeline in power plant according to claim 2, characterized in that: A connecting leg (301) is fixedly connected to one side of the sealing sleeve (3), and the other end of the third cylinder (202) is fixedly connected to the connecting leg (301).

4. The particle filtering and recovery device for coal pipeline in power plant according to claim 1, characterized in that: The other end of the sealing sleeve (3) is fixedly connected to a first rubber contact edge (302), and the lower edge of the connecting pipe (4) is fixedly connected to a second rubber contact edge (402), and the second rubber contact edge (402) cooperates with the first rubber contact edge (302).

5. The particle filtering and recovery device for coal pipeline in power plant according to claim 1, characterized in that: A connecting flange (401) is fixedly connected to the upper edge of the connecting pipe (4), and a second limiting sliding groove (103) is provided in the cross bracket (1) and located on one side of the first limiting sliding groove (101).

6. The particle filtering and recovery device for coal pipeline in power plant according to claim 5, characterized in that: A second cylinder (104) is fixedly connected inside the second limiting sliding groove (103), a second limiting sliding block (407) is fixedly connected to the other end of the second limiting sliding block (407), and a connecting frame (406) is fixedly connected to the front side of the second limiting sliding block (407).

7. The particle filtering and recovery device for coal pipeline in power plant according to claim 6, characterized in that: A plug-in plugging groove (404) is provided in the connecting pipe (4), a plug-in plugging plate (405) is slidably installed in the plug-in plugging groove (404), and one side of the two connecting frames (406) is fixedly connected to the two ends of the connecting frame (406) respectively.

8. The particle filtering and recovery device for coal pipeline in a power plant according to claim 1, characterized in that: A power motor (502) is fixedly connected inside the air blast sleeve (5) via a bracket, and an output end of the power motor (502) is connected to an air blast blade (503).

9. The particle filtering and recovery device for coal pipeline in power plant according to claim 4, characterized in that: A third rubber contact edge (501) is fixedly connected to the lower edge of the air blowing sleeve (5), and the third rubber contact edge (501) cooperates with the first rubber contact edge (302).

10. The particle filtering and recovery device for coal pipeline in power plant according to claim 1, characterized in that: A water delivery pipe (601) is symmetrically fixedly connected to the inner wall of the collection box (6) in front and back, and a plurality of atomizing nozzles (602) are fixedly connected to the collection box (6).

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