An automatic cleaning system for long-distance pipelines of granular slurry

Abstract

The utility model discloses an automatic cleaning system for a long-distance pipeline of particle slurry, and belongs to the technical field of slurry transportation. The utility model includes a filter press, a clear liquid tank, a clear liquid pump, a check valve C, an electric valve A, a check valve A, and a valve. The filter press is connected to a terminal slurry tank through a pipeline, the clear liquid tank is connected to the filter press through a pipeline, the clear liquid pump is connected to the clear liquid tank through a pipeline, the clear liquid pump is connected to a slurry pipe through a first connecting pipe, the slurry pipe is connected to a starting slurry tank through a second connecting pipe, the check valve C is installed on the first connecting pipe, the electric valve A is installed on the second connecting pipe, the check valve A is installed on the slurry pipe, the valve is installed on the slurry pipe, and the clear liquid pump and the electric valve A are both connected to the control system for communication. The utility model cleans the retained slurry in the slurry pipe to prevent the retained slurry from being deposited in the slurry pipe for a long time and affecting the normal production slurry transportation, and the cleaning process of the utility model has little effect on the slurry concentration, can reduce slurry waste, has a simple structure, and is low in cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of slurry transportation, and relates to an automatic cleaning system for a particle slurry long-distance transportation pipeline. Background Art

[0002] Pipeline transportation is a mode of transportation that uses pipelines as a means of transportation to transport liquid and gas materials over long distances. For industrial production units, there will also be situations where pipelines are frequently used to transport materials. Some industrial production units will use pipelines to transport particle slurry, and the transportation distance is long. Because the particle slurry contains solid matter and the transportation distance is long, when the particle slurry conveying system stops working after conveying the particle slurry, some particle slurry will be retained in the conveying pipeline due to the loss of driving force. As time goes by, the retained particle slurry will form sediments that affect the next pipeline material transportation. If the retained particle slurry in the pipeline is not cleaned, it will eventually lead to more and more sediments in the pipeline, causing pipeline blockage. At the same time, if the viscosity of the transported particle slurry is large, it will also increase the speed of pipeline blockage. When the sediment in the pipeline affects the normal production and transportation of materials, it is necessary to stop production and handle the pipeline, which has a great impact on normal production.

[0003] For industrial production units, a starting slurry pool and a terminal slurry pool are usually set up to store slurry at different locations, and the slurry is pumped into the slurry pipe through a slurry pump, and the slurry is transported from the starting slurry pool to the terminal slurry pool through the slurry pipe, and then the slurry is transported from the terminal slurry pool to the production process for use (such as Figure 2 As shown in the figure, therefore, the particle slurry is easily retained in the slurry pipe to form sediment, and the slurry pipe needs to be cleaned. Since the particle slurry retained in the slurry pipe belongs to the material that originally needs to be transported to the terminal slurry pool for production use, when cleaning the slurry pipe, it is necessary to reduce the waste of particle slurry and reduce the impact of the cleaning process on the original particle slurry concentration.

[0004] Therefore, it is necessary to provide an automatic cleaning system for long-distance particle slurry pipelines, which can clean the retained particle slurry in the slurry pipe with low impact on the particle slurry to avoid affecting the normal material transportation of the pipeline. Utility Model Content

[0005] In order to overcome the problems in the background technology, the utility model realizes solid-liquid separation by filtering part of the particle slurry in the terminal slurry pool, and washes the particle slurry retained in the slurry pipe by using the separated clear liquid. Since the clear liquid used for washing is separated from the slurry in the terminal slurry pool, no other clean water is introduced. Therefore, after washing, the slurry concentration is less affected, and water resources are saved. After washing the retained slurry in the slurry pipe, the retained slurry is transported to the starting slurry pool for standby, reducing slurry waste.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] The automatic cleaning system includes a filter press 1, a clear liquid tank 2, a clear liquid pump 3, a one-way valve C4, an electric valve A5, a one-way valve A6, and a valve 7. The filter press 1 is connected to a terminal slurry tank 8 through a pipeline, the clear liquid tank 2 is connected to the filter press 1 through a pipeline, the clear liquid pump 3 is connected to the clear liquid tank 2 through a pipeline, the clear liquid pump 3 is connected to a slurry pipe 9 through a first connecting pipe 10, and the slurry pipe 9 is connected to a starting slurry tank 12 through a second connecting pipe 11. The one-way valve C4 is installed on the first connecting pipe 10, the electric valve A5 is installed on the second connecting pipe 11, the one-way valve A6 is installed on the slurry pipe 9 and is located between the connection point of the second connecting pipe 11 and the slurry pipe 9 and the slurry pump 13, the valve 7 is installed on the slurry pipe 9 and is located between the connection point of the first connecting pipe 10 and the slurry pipe 9 and the terminal slurry tank 8, and the clear liquid pump 3 and the electric valve A5 are both communicatively connected to the control system.

[0008] Preferably, the control system is a PLC control system.

[0009] Preferably, the valve 7 is an electric valve, and the valve 7 is communicatively connected with the control system.

[0010] Beneficial effects of the utility model:

[0011] 1. The utility model utilizes the liquid obtained by filtration of the slurry in the terminal slurry pool to clean the retained material in the slurry pipe without introducing other cleaning liquids. The slurry in the terminal slurry pool is transported from the starting slurry pool. At the same time, after cleaning, the retained slurry will return to the starting slurry pool and be transported to the terminal slurry pool for the next production, which has little effect on the slurry concentration. After cleaning, the retained slurry will re-enter the starting slurry pool for recycling, reducing slurry waste.

[0012] 2. The utility model cleans the retained slurry to prevent the retained slurry from accumulating and depositing in the slurry pipe, thereby affecting the normal transportation of the slurry pipe and reducing the impact of the slurry transportation system on normal production.

[0013] 3. The PLC control system of the utility model can realize manual start or automatic control, which is convenient for users to choose according to actual conditions.

[0014] 4. The utility model has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the cleaning system of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a conventional slurry conveying system in an industrial production unit.

[0017] In the figure, 1-filter press, 2-clear liquid tank, 3-clear liquid pump, 4-check valve C, 5-electric valve A, 6-check valve A, 7-valve, 8-terminal slurry tank, 9-slurry pipe, 10-first connecting pipe, 11-second connecting pipe, 12-starting slurry tank, 13-slurry pump. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with specific embodiments.

[0019] like Figure 1 As shown, the automatic cleaning system includes a filter press 1, a clear liquid tank 2, a clear liquid pump 3, a one-way valve C4, an electric valve A5, a one-way valve A6, and a valve 7. The filter press 1 is connected to a terminal slurry tank 8 through a pipeline, the clear liquid tank 2 is connected to the filter press 1 through a pipeline, the clear liquid pump 3 is connected to the clear liquid tank 2 through a pipeline, the clear liquid pump 3 is connected to a slurry pipe 9 through a first connecting pipe 10, and the slurry pipe 9 is connected to a starting slurry tank 12 through a second connecting pipe 11. The one-way valve C4 is installed on the first connecting pipe 10, the electric valve A5 is installed on the second connecting pipe 11, the one-way valve A6 is installed on the slurry pipe 9 and is located between the connection point of the second connecting pipe 11 and the slurry pipe 9 and the slurry pump 13, the valve 7 is installed on the slurry pipe 9 and is located between the connection point of the first connecting pipe 10 and the slurry pipe 9 and the terminal slurry tank 8, and the clear liquid pump 3 and the electric valve A5 are both communicatively connected to the control system.

[0020] The control system is a PLC control system.

[0021] By turning on the filter press 1, part of the slurry in the terminal slurry pool 8 can be filtered, and the clear liquid obtained after the filtration is stored in the clear liquid pool 2 for standby use. When the slurry pipe 9 needs to be cleaned, the staff first determines that the slurry pump 13 is in a closed state, and at the same time determines that the valve 7 is closed, and then manually controls the control system to start the cleaning system. The control system controls the electric valve A5 to open, and controls the clear liquid pump 3 to start. The clear liquid pump 3 pumps the clear liquid stored in the clear liquid pool 2 into the first connecting pipe 10. The clear liquid flows along the first connecting pipe 10 through the one-way valve C4 and then flows into the slurry pipe 9. The clear liquid flows in the slurry pipe 9 to flush the retained slurry in the slurry pipe 9. Then, the retained slurry, driven by the clear liquid, flows in the slurry pipe 9 with the clear liquid and enters the second connecting pipe 11, and then enters the starting slurry pool 12 through the second connecting pipe 11. The valve 7 is in a closed state. When the clear liquid flows to the connection point between the first connecting pipe 10 and the slurry pipe 9, the pipeline between the connection point and the terminal slurry pool 8 is in a blocked state, and the clear liquid will not enter the terminal slurry pool 8 from the slurry pipe 9. A one-way valve A 6 is installed between the connection point between the second connecting pipe 11 and the slurry pipe 9 and the slurry pump 13. When the clear liquid flows to the connection point between the second connecting pipe 11 and the slurry pipe 9 with the retained slurry, the one-way valve A 6 prevents the liquid from continuing to flow along the slurry pipe 9 to the slurry pump 13, so that the liquid can smoothly enter the second connecting pipe 11, and then enter the starting slurry pool 12 for standby, reducing the waste of slurry. After stopping the slurry transportation from the starting slurry pool 12 to the terminal slurry pool 8, the position of the retained slurry in the slurry pipe 9 is relatively random. Therefore, it is necessary to make the distance between the position where the clear liquid enters the slurry pipe 9 and the position where the liquid flows out of the slurry pipe 9 after cleaning cover the length of the slurry pipe 9. Therefore, the connection point between the slurry pipe 9 and the first connecting pipe 10 should be as close to the terminal slurry pool 8 as possible, and the connection point between the slurry pipe 9 and the second connecting pipe 11 should be as close to the slurry pump 13 as possible, so that the liquid can flow through more positions of the slurry pipe 9, and the cleaning effect of the slurry pipe 9 is better.

[0022] When cleaning is completed, the control system controls the cleaning system to be closed, and the control system controls the electric valve A5 and the clear liquid pump 3 to be closed. When cleaning is completed, the original slurry conveying system can carry out normal slurry conveying without being affected by the cleaning system. When the original slurry conveying system conveys slurry normally, the slurry pump 13 is started, and the valve 7 is opened. The slurry pump 13 pumps the slurry in the starting slurry pool 12 into the slurry pipe 9. The slurry flows along the slurry pipe 9 through the one-way valve A6 and the valve 7 in turn, and then flows into the terminal slurry pool 8. After cleaning is completed, some clear liquid may be retained in the slurry pipe 9. At this time, the retained clear liquid will be transported to the terminal slurry pool 8 together with the slurry. Since the clear liquid used for cleaning is originally obtained by filtration of the material in the terminal slurry pool 8, the retained clear liquid returns to the terminal slurry pool 8 at this time, which can reduce the impact of the cleaning process on the slurry concentration in the terminal slurry pool 8. When the slurry is normally transported, the slurry flows to the connection point between the slurry pipe 9 and the first connecting pipe 10. Since the one-way valve C4 only allows the fluid to pass in one direction, the slurry flow direction during the slurry transport process is opposite to the clear liquid flow direction during the cleaning process. The one-way valve C4 will prevent the slurry from flowing to the clear liquid pump 3 through the first connecting pipe 10, allowing the slurry to flow directly into the terminal slurry pool 8. After the electric valve A5 is closed, the slurry cannot flow to the starting slurry pool 12 through the second connecting pipe 11 during the slurry transport process, thereby ensuring that the normal slurry transport process proceeds smoothly.

[0023] The valve 7 is an electric valve, and the valve 7 is communicatively connected with the control system.

[0024] The cleaning system can also realize full automatic control. When the valve 7 is connected to the control system for communication, the valve 7 needs to be closed when the normal transportation is stopped. When the valve 7 is an electric valve, the control system receives the signal of the valve 7 closing, and according to the preset time, the delay control clear liquid pump 3 starts, and at the same time controls the electric valve A5 to open, then the cleaning system starts to work, and cleans the slurry pipe 9. When the preset cleaning time is reached, the control system automatically controls the clear liquid pump 3 to close, and at the same time controls the electric valve A5 to close, and then controls the valve 7 to open, that is, the control of the cleaning process is completed. The time for the control system to control the delayed start of the clear liquid pump 3 and the cleaning time can be directly preset and stored in the control system.

[0025] The working process of the utility model is as follows: when cleaning is required, the clear liquid pump pumps the clear liquid into the first connecting pipe, the clear liquid flows into the slurry pipe along the first connecting pipe to clean the slurry pipe, and then the liquid in the slurry pipe continues to flow and flows into the starting slurry pool through the second connecting pipe, thus completing the cleaning process of the slurry pipe.

[0026] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. An automatic cleaning system for a long-distance pipeline of particle slurry, characterized in that: The automatic cleaning system comprises a filter press (1), a clear liquid tank (2), a clear liquid pump (3), a one-way valve C (4), an electric valve A (5), a one-way valve A (6), and a valve (7); the filter press (1) is connected to a terminal slurry tank (8) through a pipeline; the clear liquid tank (2) is connected to the filter press (1) through a pipeline; the clear liquid pump (3) is connected to the clear liquid tank (2) through a pipeline; the clear liquid pump (3) is connected to a slurry pipe (9) through a first connecting pipe (10); the slurry pipe (9) is connected to a starting slurry tank (12) through a second connecting pipe (11); ), the one-way valve C (4) is installed on the first connecting pipe (10), the electric valve A (5) is installed on the second connecting pipe (11), the one-way valve A (6) is installed on the slurry pipe (9) and is located between the connection point between the second connecting pipe (11) and the slurry pipe (9) and the slurry pump (13), the valve (7) is installed on the slurry pipe (9) and is located between the connection point between the first connecting pipe (10) and the slurry pipe (9) and the terminal slurry pool (8), and the clear liquid pump (3) and the electric valve A (5) are both connected to the control system for communication.

2. The automatic cleaning system for a particle slurry long-distance pipeline according to claim 1 is characterized by: The control system is a PLC control system.

3. The automatic cleaning system for a particle slurry long-distance pipeline according to claim 1 is characterized by: The valve (7) is an electric valve, and the valve (7) is communicatively connected with the control system.

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