Automatic circulating flushing system for spraying pump of desulfurizing tower

Abstract

An automatic circulating flushing system for spraying pumps of a desulfurizing tower comprises the spraying pumps arranged on spraying pump bearing platforms, the spraying pump bearing platforms are of box structures, a screen plate is arranged at the tops of the spraying pump bearing platforms, and the spraying pump bearing platforms are arranged on the screen plate in a lap joint mode; the bottom of the spraying pump bearing platform is connected with a slurry collecting box through a pipeline; a liquid level meter is arranged on the slurry collecting box; the slurry collecting box is connected with the gypsum filter press through a pipeline, and a slurry feeding pump is arranged on the pipeline; the liquid discharging end of the gypsum filter press is connected with a water tank through a pipeline, the water tank is provided with a pipeline extending to the position above the spraying pump, the part, located above the spraying pump, of the pipeline is provided with a high-pressure spraying head, and the pipeline is further provided with a spraying control module; the spraying control module and the liquid level meter are both connected with the main control module, and the main control module is further connected with the slurry feeding pump and controls starting and stopping of the slurry feeding pump. By the adoption of the structure, automatic flushing of the spraying pump can be achieved, flushing waste water is effectively treated and then recycled, and the labor cost and the economic cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization tower cleaning, in particular to an automatic circulation flushing system of a desulfurization tower spray pump. Background Art

[0002] The three spray pumps in the desulfurization tower spray circulation system adopt the working mode of "2 in operation and 1 out of operation, with regular rotation" to save energy and increase efficiency. In order to prevent the lime slurry from depositing in the spray pump and causing blockage, when one of the spray pumps stops, the operator is required to go to the site to manually flush it, which consumes a large amount of clean water, resulting in problems such as waste of water resources and high labor intensity for operators. After flushing, the lime slurry will flow along the ditch to the rainwater collection pool. As the lime slurry increases, high-density slurry often precipitates, causing ditch blockage, which in turn leads to sewage overflow. There is a certain environmental risk. In addition, the disposal of lime slurry does not meet the environmental protection requirements of chemical companies. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an automatic circulation flushing system for a desulfurization tower spray pump, which can effectively solve the technical problems raised in the background technology, realize automatic flushing of the spray pump, and effectively treat the flushing wastewater for recycling, thereby reducing labor and economic costs.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an automatic circulation flushing system of a desulfurization tower spray pump, comprising a spray pump arranged on a spray pump support, the spray pump support is a box structure, a mesh plate is arranged on the top of the spray pump support, and a plurality of spray pump supports are placed on the mesh plate;

[0005] The bottom of the spray pump support is connected to a slurry collection box through a pipeline, and a liquid level gauge is provided on the slurry collection box;

[0006] The slurry collection box is connected to the gypsum filter press through a pipeline, and a slurry delivery pump is provided on the connecting pipeline between the slurry collection box and the gypsum filter press;

[0007] The discharge end of the gypsum filter press is connected to a water tank through a pipeline, and a pipeline extending to the top of a spray pump is provided on the water tank. A high-pressure nozzle is provided on the pipeline portion above the spray pump, and a spray control module is also provided on the pipeline;

[0008] The spray control module and the liquid level meter are both connected to the main control module, and the main control module is also connected to the slurry delivery pump and controls the start and stop of the slurry delivery pump.

[0009] In a preferred solution, the spray control module includes a solenoid valve located on the pipeline, the solenoid valve is connected to a control module in the spray control module, and the control module is connected to a timing module.

[0010] In the preferred solution, a fixed inclined plate is provided in the middle of the spray pump base, a water-passing inclined mesh plate is provided on the fixed inclined plate, a movable slag discharge frame is provided above the fixed inclined plate and fitted therewith, both ends of the movable slag discharge frame are arranged through the side walls of the spray pump base, and a slag receiving box is provided below the outside of the side wall of the spray pump base through which the lower end of the movable slag discharge frame passes.

[0011] In the preferred scheme, the movable slag discharge frame is a rectangular frame structure, and a plurality of slag pushing rods are arranged along the inclination direction of the movable slag discharge frame. The slag pushing rods are fixed to the side wall of the higher end of the movable slag discharge frame, and a gap is left between the side wall of the lower end.

[0012] In a preferred solution, the higher end of the movable slag discharge frame passes through the control box on the outer wall of the spray pump support platform;

[0013] A movable push plate capable of moving laterally is arranged in the control box, and a higher end of the movable slag discharge frame is movably connected to the movable push plate.

[0014] In a preferred solution, a vertical groove is provided on the movable push plate, and a higher end of the movable slag discharge frame is arranged in the vertical groove and can move vertically along the vertical groove.

[0015] In a preferred solution, a horizontal screw rod passing through the movable push plate is provided in the control box, and one end of the screw rod extends outside the control box and is connected to the shaft between the motors.

[0016] The automatic circulation flushing system of the desulfurization tower spray pump provided by the utility model has the following beneficial effects by adopting the above structure:

[0017] (1) The automatic flushing of the spray pump is achieved, and the solenoid valve on the flushing pipeline can be opened and closed by remote control, thereby achieving the purpose of remote control of the spray pump flushing operation;

[0018] (2) The recycling treatment and utilization of flushing wastewater was achieved, which reduced the flushing water consumption and effectively avoided the environmental risks caused by the leakage of lime slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the structure of the spray pump support platform of the utility model.

[0022] In the figure: a spray pump support 1, a mesh plate 101, a spray pump 2, a slurry collecting box 3, a gypsum filter press 4, a slurry pump 5, a water tank 6, a spray control module 7, a high-pressure nozzle 8, a liquid level meter 9, a main control module 10, a solenoid valve 11, a control module 12, a timing module 13, a fixed inclined plate 14, a water-passing inclined mesh plate 141, a movable slag discharge frame 15, a slag pushing rod 151, a control box 16, a movable push plate 17, a vertical slot 171, a screw 18, a motor 19, and a slag receiving box 20. DETAILED DESCRIPTION

[0023] like Figure 1-2 In the invention, an automatic circulation flushing system for a desulfurization tower spray pump comprises a spray pump 2 arranged on a spray pump support 1, wherein the spray pump support 1 is a box structure, a mesh plate 101 is arranged on the top of the spray pump support 1, and a plurality of spray pump supports 1 are placed on the mesh plate 101;

[0024] The bottom of the spray pump support 1 is connected to the slurry collection box 3 through a pipeline, and the slurry collection box 3 is provided with a liquid level meter 9;

[0025] The slurry collection box 3 is connected to the gypsum filter press 4 through a pipeline, and a slurry pump 5 is provided on the connecting pipeline between the slurry collection box 3 and the gypsum filter press 4;

[0026] The discharge end of the gypsum filter press 4 is connected to a water tank 6 through a pipeline. The water tank 6 is provided with a pipeline extending to the top of the spray pump 2. A high-pressure nozzle 8 is provided on the pipeline portion located above the spray pump 2. A spray control module 7 is also provided on the pipeline.

[0027] The spray control module 7 and the liquid level meter 9 are both connected to the main control module 10 , and the main control module 10 is also connected to the slurry delivery pump 5 and controls the start and stop of the slurry delivery pump 5 .

[0028] In a preferred solution, the spray control module 7 includes a solenoid valve 11 located on the pipeline, the solenoid valve 11 is connected to a control module 12 in the spray control module 7 , and the control module 12 is connected to a timing module 13 .

[0029] In the preferred solution, a fixed inclined plate 14 is provided in the middle of the spray pump base 1, a water-passing inclined mesh plate 141 is provided on the fixed inclined plate 14, a movable slag discharge frame 15 is provided above the fixed inclined plate 14 and fitted therewith, both ends of the movable slag discharge frame 15 are arranged through the side walls of the spray pump base 1, and a slag receiving box 20 is provided below the outside of the side wall of the spray pump base 1 through which the lower end of the movable slag discharge frame 15 passes.

[0030] In the preferred solution, the movable slag discharge frame 15 is a rectangular frame structure, and a plurality of slag pushing rods 151 are arranged along the inclination direction of the movable slag discharge frame 15 inside the movable slag discharge frame 15. The slag pushing rods 151 are fixed to the side wall of the higher end of the movable slag discharge frame 15, and a gap is left between the side wall of the lower end.

[0031] In a preferred solution, the higher end of the movable slag discharge frame 15 passes through the control box 16 on the outer wall of the spray pump support 1;

[0032] The control box 16 is provided with a movable push plate 17 capable of moving laterally, and a higher end of the movable slag discharge frame 15 is movably connected to the movable push plate 17 .

[0033] In a preferred solution, a vertical groove 171 is provided on the movable push plate 17 , and a higher end of the movable slag discharge frame 15 is disposed in the vertical groove 171 and can move vertically along the vertical groove 171 .

[0034] In a preferred solution, a horizontal screw rod 18 passing through the movable push plate 17 is provided in the control box 16 , and one end of the screw rod 18 extends to the outside of the control box 16 and is connected to the shaft of the motor 19 .

[0035] The automatic circulation flushing system of the desulfurization tower spray pump disclosed in the present invention, after adding a set of spray control modules 7, makes the flushing of the spray pump 2 in the desulfurization tower spray circulation system be in the following state: adding a high-pressure nozzle 8 to replace the original manual water pipe flushing operation, realizing the flow control in the high-pressure nozzle 8 through the solenoid valve 11, and controlling the flushing time through the timing module 13 to realize the control of the flushing water consumption. The PLC-controlled flushing device is connected to the DCS system to form an automatic flushing device system, which is convenient for real-time monitoring on the computer. The start and stop states of the three spray pumps 2 are associated with the PLC-controlled flushing system. When a spray pump stops running, its stop state signal is transmitted to the PLC-controlled flushing system. At this time, the corresponding high-pressure nozzle 8 receives the signal and automatically opens, and closes after a certain flushing time to complete the flushing.

[0036] After adding the above structure, the original manual flushing is replaced. When the on-duty personnel find that the spray pump 2 is not flushed clean, they can adjust the high-pressure nozzle 8 of the automatic flushing system to "manual" in the DCS operation interface and operate it. At this time, the high-pressure nozzle 8 is turned on to flush the spray pump 2, and then it is closed after confirming that it is flushed clean again, and it returns to the "automatic" state.

[0037] The added slurry collection box 3 and slurry pump 5 collect the flushed slurry into the slurry collection box 3 through a special pipeline, and then connect the collection box 3, slurry pump 5 and gypsum filter press 4 through a pipeline, connect the liquid level meter 9 and slurry pump 5 to the DCS system, and interlock the liquid level in the slurry collection box 3 with the start and stop of the slurry pump 5. When the liquid level exceeds 85% of the range, the slurry pump 5 starts to transport the lime slurry in the box to the gypsum filter press 4 for filtration; when the liquid level is lower than 15% of the range, the slurry pump 5 stops. The water after filtration is connected to the water tank 6 through a pipeline for flushing the spray pump 2, thereby realizing the recycling of flushing water and effectively avoiding the environmental risks caused by the leakage of lime slurry.

[0038] After this transformation, an automated system was formed, which greatly improved the level of automation in production safety, increased production efficiency, reduced the labor intensity of operators, enabled the recycling of water resources, and effectively reduced environmental risks.

Claims

1. An automatic circulation flushing system for a desulfurization tower spray pump, comprising a spray pump (2) arranged on a spray pump support (1), characterized in that: The spray pump support platform (1) is a box structure, a mesh plate (101) is provided on the top of the spray pump support platform (1), and a plurality of spray pump support platforms (1) are placed on the mesh plate (101); The bottom of the spray pump support (1) is connected to the slurry collection box (3) through a pipeline, and the slurry collection box (3) is provided with a liquid level meter (9); The slurry collection box (3) is connected to the gypsum filter press (4) via a pipeline, and a slurry delivery pump (5) is provided on the connecting pipeline between the slurry collection box (3) and the gypsum filter press (4); The discharge end of the gypsum filter press (4) is connected to a water tank (6) via a pipeline, the water tank (6) is provided with a pipeline extending to the top of the spray pump (2), a high-pressure nozzle (8) is provided on the pipeline portion located above the spray pump (2), and a spray control module (7) is also provided on the pipeline; The spray control module (7) and the liquid level meter (9) are both connected to the main control module (10), and the main control module (10) is also connected to the slurry delivery pump (5) and controls the start and stop of the slurry delivery pump (5).

2. The automatic circulation flushing system of a desulfurization tower spray pump according to claim 1 is characterized in that: The spray control module (7) comprises a solenoid valve (11) located on the pipeline, the solenoid valve (11) is connected to a control module (12) in the spray control module (7), and the control module (12) is connected to a timing module (13).

3. The automatic circulation flushing system of a desulfurization tower spray pump according to claim 1 is characterized in that: A fixed inclined plate (14) is provided in the middle of the spray pump support (1), a water-passing inclined mesh plate (141) is provided on the fixed inclined plate (14), a movable slag discharge frame (15) is provided above the fixed inclined plate (14) and is fitted therewith, both ends of the movable slag discharge frame (15) are arranged through the side wall of the spray pump support (1), and a slag receiving box (20) is provided below the outside of the side wall of the spray pump support (1) through which the lower end of the movable slag discharge frame (15) passes.

4. The automatic circulation flushing system of a desulfurization tower spray pump according to claim 3 is characterized in that: The movable slag discharge frame (15) is a rectangular frame structure. A plurality of slag pushing rods (151) are arranged inside the movable slag discharge frame (15) along the inclined direction of the movable slag discharge frame (15). The slag pushing rods (151) are fixed to the side wall of the higher end of the movable slag discharge frame (15), and a gap is left between the side wall of the lower end.

5. The automatic circulation flushing system of a desulfurization tower spray pump according to claim 3 is characterized in that: The higher end of the movable slag discharge frame (15) passes through a control box (16) on the outer wall of the spray pump support (1); A movable push plate (17) capable of moving laterally is disposed in the control box (16), and a higher end of the movable slag discharge frame (15) is movably connected to the movable push plate (17).

6. The automatic circulation flushing system of a desulfurization tower spray pump according to claim 5 is characterized in that: The movable push plate (17) is provided with a vertical groove (171), and the higher end of the movable slag discharge frame (15) is arranged in the vertical groove (171) and can move vertically along the vertical groove (171).

7. The automatic circulation flushing system of a desulfurization tower spray pump according to claim 6 is characterized in that: A horizontal screw rod (18) passing through the movable push plate (17) is arranged in the control box (16); one end of the screw rod (18) extends outside the control box (16) and is connected to the shaft of the motor (19).

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