Device for preventing filter screen at inlet of slurry circulating pump from being blocked

Abstract

The utility model discloses a device for preventing a filter screen at an inlet of a slurry circulating pump from being blocked, relates to the technical field of slurry circulating pumps, and aims to solve the problems that the flow of the slurry circulating pump is reduced and the output is reduced after the slurry circulating pump is blocked. In the operation process of a unit, when an inlet of a slurry circulating pump is blocked, the current system design cannot solve the blocking problem, the normal standby of the slurry circulating pump directly influences the safe operation of a desulfurizing absorption tower, and when the slurry circulating pump cannot be normally standby, the environment-friendly emission of the unit is seriously influenced. The device comprises an absorption tower, a compressed air pipe and a flushing water pipe, a mounting seat is mounted on the absorption tower, a slurry circulating pump is mounted on the mounting seat, an inlet of the slurry circulating pump is mounted in a circulating port of the absorption tower, and a filter screen is mounted on the inlet of the slurry circulating pump; and the compressed air pipe is communicated with a plurality of first pipelines.

Description

Technical Field

[0001] This utility model relates to the field of slurry circulation pumps, specifically a device for preventing clogging of the inlet filter screen of a slurry circulation pump. Background Technology

[0002] When the slurry circulation pump inlet filter of the absorber tower stops operating, the lack of an agitator at the inlet filter leads to a large accumulation of gypsum at the filter screen, resulting in blockage and reduced flow area. This blockage causes a decrease in slurry circulation pump flow rate and output. Since the current system design cannot resolve blockage issues during unit operation, and the normal standby status of the slurry circulation pump directly affects the safe operation of the desulfurization absorber tower, the inability of the slurry circulation pump to operate normally severely impacts the unit's environmental emissions. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a device for preventing clogging of the inlet filter screen of a slurry circulation pump, thereby solving the problem mentioned in the background art where clogging leads to a decrease in the flow rate and output of the slurry circulation pump. During unit operation, when clogging occurs at the inlet of the slurry circulation pump, the current system design cannot solve the clogging problem. Furthermore, the normal standby status of the slurry circulation pump directly affects the safe operation of the desulfurization absorption tower. When the slurry circulation pump cannot be normally standby, it seriously affects the environmental emissions of the unit.

[0004] To solve the above-mentioned technical problems, this utility model provides a device for preventing clogging of the inlet filter screen of a slurry circulation pump. The device includes an absorption tower, a compressed air pipe and a flushing water pipe. An installation base is installed on the absorption tower, and a slurry circulation pump is installed on the installation base. The inlet of the slurry circulation pump is installed in the circulation port of the absorption tower, and a filter screen is installed on the inlet of the slurry circulation pump.

[0005] The compressed air pipe is connected to a plurality of first pipes, each of which is equipped with a first valve. The first pipes are connected to the absorption tower and each of which is equipped with a first nozzle.

[0006] The flushing water pipe is connected to multiple second pipes, each of which is equipped with a second valve. The second pipes are connected to the absorption tower, and each of the second pipes is equipped with a second nozzle.

[0007] In some embodiments, an installation structure is installed between the inlet of the slurry circulation pump and the filter screen. The number of installation structures is four, and the installation structures are distributed in a ring at equal intervals between the inlet of the slurry circulation pump and the filter screen. Each installation structure includes a lug and a bolt. The lug has a T-shaped hole, and the slurry circulation pump has a threaded groove. The bolt passes through the T-shaped hole and is fitted into the threaded groove.

[0008] In some embodiments, a sealing ring is installed inside the inlet of the slurry circulation pump, and the filter screen is inserted into the sealing ring.

[0009] In some embodiments, a connecting pipe is connected to the outlet of the slurry circulation pump, an outer connecting pipe is fitted onto the connecting pipe, a rubber ring is installed inside the outer connecting pipe, the connecting pipe is inserted into the rubber ring, a first L-shaped groove is formed on the outer connecting pipe, a second L-shaped groove is formed on the rubber ring, and a limiting block is installed on the connecting pipe, the limiting block being respectively engaged in the first L-shaped groove and the second L-shaped groove.

[0010] In some embodiments, the limiting block has a groove, a spring is installed in the groove, a ball is installed on the spring, and the ball abuts against the first L-shaped groove.

[0011] In some embodiments, a slot is provided in the first L-shaped groove, and the ball is inserted into the slot.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. When the slurry circulation pump stops running, manually open the first valve of this device. Gas in the compressed air pipe enters the first pipe and is sprayed out through the first nozzle. The gas is sprayed onto the filter screen on the slurry circulation pump. The compressed air effectively increases the fluidity of the inlet filter screen of the slurry circulation pump, preventing gypsum slurry deposition and avoiding blockage. Manually open the second valve. Water in the flushing water pipe enters the second pipe and is sprayed onto the filter screen on the slurry circulation pump through the second nozzle. The flushing water can flush away the deposited gypsum when the inlet filter screen is blocked, increasing the fluidity of the gypsum and thus solving the blockage problem.

[0014] 2. Insert the filter screen into the sealing ring inside the inlet of the slurry circulation pump, pass the bolt through the T-shaped hole on the ear plate, and screw it into the threaded groove to install the filter screen inside the inlet of the slurry circulation pump. The sealing ring will then provide a sealing effect. Alternatively, the filter screen can be disassembled and installed through the inspection port of the absorption tower. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2This is a schematic diagram of the absorption tower, the second pipeline, and the second nozzle of this utility model.

[0017] Figure 3 This is a schematic diagram of the connecting pipe, outer pipe, and rubber ring structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the slurry circulation pump, filter screen, and ear plate structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the groove, spring, and sphere structure of this utility model.

[0020] in:

[0021] 1-Absorber tower; 2-Mounting base; 3-Slurry circulation pump; 4-Mounting structure; 401-Ear plate; 402-Bolt; 5-Compressed air pipe; 6-First pipeline; 7-First valve; 8-First nozzle; 9-Flushing water pipe; 10-Second pipeline; 11-Second valve; 12-Second nozzle; 13-Filter screen; 14-Sealing ring; 15-Connecting pipe; 16-External pipe; 17-Rubber ring; 18-First L-shaped groove; 19-Second L-shaped groove; 20-Limiting block; 21-Groove; 22-Spring; 23-Spherical ball; 24-Slot Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0023] All components of this utility model are general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0024] See Figure 1-5This is a schematic diagram of the structure of this utility model. An embodiment of this utility model provides a device for preventing clogging of the inlet filter screen of a slurry circulation pump. It includes an absorption tower 1, a compressed air pipe 5, and a flushing water pipe 9. An mounting base 2 is installed on the absorption tower 1, and a slurry circulation pump 3 is installed on the mounting base 2. The inlet of the slurry circulation pump 3 is installed inside the circulation port of the absorption tower 1, and a filter screen 13 is installed on the inlet of the slurry circulation pump 3. Five first pipes 6 are connected to the compressed air pipe 5, each with a first valve 7 installed. The first pipes 6 are connected to the absorption tower 1, and each has a first nozzle 8 installed. Five second pipes 10 are connected to the flushing water pipe 9, each with a second valve 11 installed. The second pipes 10 are connected to the absorption tower 1, and each has a second nozzle 12 installed.

[0025] It should be noted that in this embodiment, the absorption tower 1 is existing technology, so it is not described in detail. The compressed air pipe 5 is connected to an external high-pressure air pump, and the flushing water pipe 9 is connected to an external high-pressure water pump. The first nozzle 8 and the second nozzle 12 are both scattering nozzles. The ends of the first pipe 6 and the second pipe 10 (the positions where they enter the absorption tower) are on the same horizontal line and are horizontal to the center line of the filter screen 13. The spray area of ​​the five first nozzles 8 and the five second nozzles 12 is larger than the area of ​​the filter screen 13. The slurry circulation pump 3 is powered on and working.

[0026] Specifically, during operation, when the slurry circulation pump 3 at the inlet of the absorption tower 1 stops running, the first valve 7 is manually opened, allowing gas from the compressed air pipe 5 to enter the first pipe 6 and be sprayed out through the first nozzle 8. The gas sprays onto the filter screen 13 on the slurry circulation pump 3. The compressed air effectively increases the fluidity of the filter screen 13 at the inlet of the slurry circulation pump 3, preventing gypsum slurry deposition and avoiding blockage. Meanwhile, the second valve 11 is manually opened, allowing water from the flushing water pipe 9 to enter the second pipe 10 and be sprayed onto the slurry circulation pump 3 through the second nozzle 12. On filter screen 13, the flushing water can wash away the deposited gypsum when the inlet filter screen becomes clogged, increasing the fluidity of the gypsum and thus solving the clogging problem. (Currently, absorption towers do not have related designs or functions. This invention adds a compressed air pipe and a flushing water pipe at the inlet filter screen of the slurry circulation pump. When the slurry circulation pump stops, the compressed air manual valve can be opened to ensure the fluidity of the slurry at the inlet filter screen and prevent sedimentation. When the inlet filter screen of the slurry circulation pump becomes clogged due to slurry sedimentation, the inlet filter screen can be flushed by opening the relevant flushing water manual valve to solve the inlet filter screen clogging problem.)

[0027] In some embodiments, an installation structure 4 is installed between the inlet of the slurry circulation pump 3 and the filter screen 13. There are four installation structures 4, which are distributed in a ring at equal intervals between the inlet of the slurry circulation pump 3 and the filter screen 13. The installation structure 4 includes a lug 401 and a bolt 402. A T-shaped hole is opened on the lug 401, and a threaded groove is opened on the slurry circulation pump 3. The bolt 402 passes through the T-shaped hole and is sleeved in the threaded groove. A sealing ring 14 is installed in the inlet of the slurry circulation pump 3, and the filter screen 13 is inserted into the sealing ring 14.

[0028] It should be noted that in this embodiment, the cross-section of the T-shaped hole is T-shaped, and the sealing ring 14 is made of fluororubber, which has corrosion resistance and high temperature resistance.

[0029] Specifically, in use, the filter screen 13 is inserted into the sealing ring 14 inside the inlet of the slurry circulation pump 3, and the bolt 402 is passed through the T-shaped hole on the ear plate 401 and screwed into the threaded groove, so that the filter screen 13 is installed inside the inlet of the slurry circulation pump 3, and the sealing ring 14 has a sealing effect. Conversely, it can be disassembled and the filter screen 13 can be disassembled and installed through the inspection port of the absorption tower 1.

[0030] In some embodiments, a connecting pipe 15 is connected to the outlet of the slurry circulation pump 3. An outer connecting pipe 16 is fitted onto the connecting pipe 15. A rubber ring 17 is installed inside the outer connecting pipe 16. The connecting pipe 15 is inserted into the rubber ring 17. A first L-shaped groove 18 is formed on the outer connecting pipe 16. A second L-shaped groove 19 is formed on the rubber ring 17. A limiting block 20 is installed on the connecting pipe 15. The limiting block 20 is respectively engaged in the first L-shaped groove 18 and the second L-shaped groove 19. A groove 21 is formed on the limiting block 20. A spring 22 is installed in the groove 21. A ball 23 is installed on the spring 22. The ball 23 is pressed against the first L-shaped groove 18. A slot 24 is formed in the first L-shaped groove 18. The ball 23 is engaged in the slot 24.

[0031] It should be noted that in this embodiment, the rubber ring 17 is made of fluororubber, which has corrosion resistance and high temperature resistance. The height of the limiting block 20 is the same as the height of the first L-shaped groove 18 and the second L-shaped groove 19. The outer diameter of the sphere 23 is smaller than the inner diameter of the groove 21.

[0032] Specifically, during use, the rubber ring 17 inside the external pipe 16 of the external circulation equipment is fitted onto the connecting pipe 15 at the outlet of the slurry circulation pump 3, while the limiting blocks 20 are respectively engaged at the end positions of the first L-shaped groove 18 and the second L-shaped groove 19, so that the external pipe 16 and the connecting pipe 15 are quickly connected. The spring 22 in the groove 21 exerts an outward force on the ball 23, and the ball 23 is engaged in the slot 24, so that the external pipe 16 and the connecting pipe 15 are connected and positioned.

[0033] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0034] The working process and principle of this utility model are as follows: In use, the rubber ring 17 inside the outer pipe 16 of the external circulation equipment is fitted onto the connecting pipe 15 at the outlet of the slurry circulation pump 3. The limiting blocks 20 are respectively engaged at the end positions of the first L-shaped groove 18 and the second L-shaped groove 19, allowing the outer pipe 16 and the connecting pipe 15 to connect quickly. The spring 22 in the groove 21 exerts an outward force on the ball 23, causing the ball 23 to engage in the slot 24, thus limiting and positioning the connection between the outer pipe 16 and the connecting pipe 15. The filter screen 13 is then inserted into the sealing ring 14 inside the inlet of the slurry circulation pump 3. The bolt 402 passes through the T-shaped hole on the ear plate 401 and is screwed into the threaded groove, allowing the filter screen 13 to be installed inside the inlet of the slurry circulation pump 3. The sealing ring 14 provides a sealing effect and can be disassembled if the filter screen 13 is not engaged. The filter screen 13 is disassembled and reassembled through the inspection port of the absorption tower 1. The slurry circulation pump 3 circulates the slurry between the absorption tower 1 and the external equipment. When the slurry circulation pump 3 stops running, the first valve 7 is manually opened, and the gas in the compressed air pipe 5 enters the first pipe 6 and is sprayed out through the first nozzle 8. The gas is sprayed onto the filter screen 13 on the slurry circulation pump 3. The compressed air effectively increases the fluidity of the inlet filter screen 13 of the slurry circulation pump 3, preventing gypsum slurry deposition and avoiding blockage. The second valve 11 is manually opened, and the water in the flushing water pipe 9 enters the second pipe 10 and is sprayed onto the filter screen 13 on the slurry circulation pump 3 through the second nozzle 12. The flushing water can flush away the deposited gypsum when the inlet filter screen is blocked, increase the fluidity of the gypsum and thus solve the blockage problem.

[0035] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing clogging of the inlet filter screen of a slurry circulation pump, comprising an absorption tower (1), a compressed air pipe (5), and a flushing water pipe (9), characterized in that: The absorption tower (1) is equipped with a mounting base (2), and a slurry circulation pump (3) is installed on the mounting base (2). The inlet of the slurry circulation pump (3) is installed in the circulation port of the absorption tower (1), and a filter screen (13) is installed on the inlet of the slurry circulation pump (3). The compressed air pipe (5) is connected to a plurality of first pipes (6), each of which is equipped with a first valve (7). The first pipes (6) are connected to the absorption tower (1), and each of which is equipped with a first nozzle (8). The flushing water pipe (9) is connected to a plurality of second pipes (10), and a second valve (11) is installed on each of the second pipes (10). The second pipes (10) are connected to the absorption tower (1), and a second nozzle (12) is installed on each of the second pipes (10).

2. The device for preventing clogging of the inlet filter screen of a slurry circulation pump according to claim 1, characterized in that: An installation structure (4) is installed between the inlet of the slurry circulation pump (3) and the filter screen (13). There are four installation structures (4). The installation structures (4) are distributed in a ring at equal intervals between the inlet of the slurry circulation pump (3) and the filter screen (13). The installation structure (4) includes a lug plate (401) and a bolt (402). A T-shaped hole is opened on the lug plate (401). A threaded groove is opened on the slurry circulation pump (3). The bolt (402) passes through the T-shaped hole and is sleeved in the threaded groove.

3. The device for preventing clogging of the inlet filter screen of a slurry circulation pump according to claim 2, characterized in that: A sealing ring (14) is installed inside the inlet of the slurry circulation pump (3), and the filter screen (13) is inserted into the sealing ring (14).

4. The device for preventing clogging of the inlet filter screen of a slurry circulation pump according to claim 1, characterized in that: The outlet of the slurry circulation pump (3) is connected to a connecting pipe (15), and an outer pipe (16) is fitted on the connecting pipe (15). A rubber ring (17) is installed inside the outer pipe (16). The connecting pipe (15) is inserted into the rubber ring (17). A first L-shaped groove (18) is opened on the outer pipe (16), and a second L-shaped groove (19) is opened on the rubber ring (17). A limiting block (20) is installed on the connecting pipe (15), and the limiting block (20) is respectively engaged in the first L-shaped groove (18) and the second L-shaped groove (19).

5. The device for preventing clogging of the inlet filter screen of a slurry circulation pump according to claim 4, characterized in that: The limiting block (20) has a groove (21) and a spring (22) is installed in the groove (21). A ball (23) is installed on the spring (22) and the ball (23) abuts against the first L-shaped groove (18).

6. The device for preventing clogging of the inlet filter screen of a slurry circulation pump according to claim 5, characterized in that: A slot (24) is provided in the first L-shaped groove (18), and the ball (23) is inserted into the slot (24).

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