Flushing and backwashing system for filling pipeline
Through the coordinated use of the three-stage high-efficiency pipe washing method and the air-water separator, the problems of water waste and substandard filling quality in the flushing of the filling pipes are solved, and efficient cleaning of the filling pipes and safe production are achieved.
Patent Information
- Application Number
- CN202422016358.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-08-20
AI Technical Summary
In the prior art, the flushing method of filling pipes leads to waste of water resources and unqualified filling quality, and there is a risk of pipe blockage, especially for coarse aggregate cementing slurry with uneven particle size, the flushing effect is poor.
A three-stage high-efficiency pipe washing method is adopted, including forward clean water, first-stage flushing, reverse high-pressure air second-stage flushing and third-stage high-pressure air flushing, combined with an air-water separator and a pipe sight glass, to achieve efficient cleaning of the filling pipe and recovery of flushing water.
It effectively reduces water waste, improves filling quality, reduces pipe blockage risks, and ensures the cleanliness and safety of filling pipelines.
Smart Images
Figure CN223312652U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mine filling, in particular to a filling pipeline flushing and backwashing system. Background Art
[0002] Mine filling technology is the main technical means to deal with surface subsidence. It uses technologies such as full tailings cemented filling, block stone mortar cemented filling, and crushed stone cement cemented filling to complete the filling work after mining.
[0003] At present, cemented filling mainly involves the filling slurry being pressurized by a pump through a filling pipe and sent to the borehole from the surface into the top of the mining area. After the filling is completed, the filling slurry in the filling pipe needs to be cleaned in time to ensure normal use next time. The purpose is to prevent the filling slurry from accumulating and hardening in the pipe, causing pipe blockage accidents and affecting work.
[0004] In the past, the method of flushing the filling pipeline was to directly use clean water under pressure to pump it into the filling management to flush it. However, since the pumped filling pipeline is usually long and the amount of water used for pipe washing is large, the water after pipe washing directly enters the goaf, which will seriously dilute the filling slurry in the goaf, resulting in unqualified filling quality and even causing production safety accidents; at the same time, it causes waste of production water and increases production costs; for coarse aggregate cementing slurry with uneven particle size and large particle specific gravity, a larger water flow rate through the pipeline is required and the flushing time is longer. Utility Model Content
[0005] The purpose of the utility model is to provide a filling pipe flushing and backwashing system.
[0006] The utility model is implemented by the following technical solutions: a filling pipeline flushing and backwashing system, which includes a grouting workshop, a mixing tank, a filling pump, a discharge valve, a filling pipeline, a feed valve, an air-water separator, a water outlet pipe, a production water pool, a water outlet valve, an air outlet pipe, an air compressor, and an air outlet valve;
[0007] The grouting workshop is provided with the stirring tank, the outlet of the stirring tank is connected to the inlet pipeline of the filling pump, the outlet of the filling pump is connected to the inlet end of the filling pipeline through the discharge valve, the outlet end of the filling pipeline is connected to the inlet pipeline of the gas-water separator through the feed valve, and the outlet of the gas-water separator is connected to the filling area;
[0008] The filling pipeline on one side of the outlet end of the discharge valve is fixedly connected to the water outlet pipe, the inlet end of the water outlet pipe is connected to the outlet of the production water pool through a water injection pump, and the water outlet valve is installed on the water outlet pipe;
[0009] The filling pipeline on one side of the inlet end of the feed valve is fixedly connected with the air outlet pipe, the inlet end of the air outlet pipe is connected to the air compressor, and the air outlet valve is installed on the air outlet pipe.
[0010] Furthermore, the gas outlet of the gas-water separator is connected to an exhaust pipe, and a gas valve is installed on the exhaust pipe.
[0011] Furthermore, a pipeline sight glass is installed on the pipeline between the feed valve and the gas-water separator.
[0012] Furthermore, it also includes a return water pool, a return water pipe is fixedly connected to the filling pipeline on the outlet side of the discharge valve, the outlet end of the return water pipe is connected to the inlet of the return water pool, and a return water valve is installed on the return water pipe.
[0013] The advantages of this utility model are: it adopts a three-stage high-efficiency pipe washing method with forward clean water, return clean water and high-pressure air. In the first stage of flushing, the remaining filling slurry in the filling pipeline is quickly and effectively cleaned with clean water in the forward direction. In the second stage of flushing, the primary flushing water in the filling pipeline is backwashed with high-pressure air in the reverse direction, and the flushing water is discharged into the return water tank to recycle this part of water, while achieving secondary flushing of the filling pipeline. In the third stage of flushing, the reverse high-pressure air flushing time is extended on the basis of the second stage of flushing, and the residual aggregate and sediment in the pipeline are flushed clean by high-pressure air and discharged into the return water tank.
[0014] Use the gas-water separator to evacuate the gas in the pipeline. When the filling slurry reaches the front end of the gas-water separator, close the gas valve of the gas-water separator and send the filling slurry to the filling area.
[0015] The pipe sight glass is used to easily observe the flushing and filling conditions in the filling pipe. During a flushing stage, when the pipe sight glass observes production water, it is convenient to close the feed valve in time. During the grouting stage, when the filling slurry is delivered to the front end of the gas-water separator, it is also convenient to observe through the pipe sight glass and close the gas valve of the gas-water separator. At this time, the air in the pipeline is emptied and the filling slurry is delivered to the filling area. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0017] Figure 1 It is a structural diagram of the utility model;
[0018] In the figure: grouting workshop 1, mixing tank 2, filling pump 3, discharge valve 4, filling pipeline 5, feed valve 6, gas-water separator 7, filling area 8, exhaust pipe 9, gas valve 10, water outlet pipe 11, water injection pump 12, production water pool 13, water outlet valve 14, air outlet pipe 15, air compressor 16, air outlet valve 17, pipeline sight glass 18, return water pool 19, return water pipe 20, return water valve 21. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.
[0020] like Figure 1 As shown, the filling pipeline flushing and backwashing system includes a grouting workshop 1, a mixing tank 2, a filling pump 3, a discharge valve 4, a filling pipeline 5, a feed valve 6, a gas-water separator 7, a water outlet pipe 11, a production water pool 13, a water outlet valve 14, an air outlet pipe 15, an air compressor 16, and an air outlet valve 17;
[0021] A mixing tank 2 is provided in the grouting workshop 1, and the mixing tank 2 can be used to prepare filling slurry. The outlet of the mixing tank 2 is connected to the inlet pipeline of the filling pump 3, and the outlet of the filling pump 3 is connected to the inlet end of the filling pipeline 5 through the discharge valve 4. The outlet end of the filling pipeline 5 is connected to the inlet pipeline of the gas-water separator 7 through the feed valve 6. The outlet of the gas-water separator 7 is connected to the filling area 8, and the gas outlet of the gas-water separator 7 is connected to the exhaust pipe 9. The exhaust pipe 9 is equipped with a gas valve 10. During normal grouting, the discharge valve 4 and the feed valve 6 are opened, and the other valves are closed. The gas in the pipeline is emptied by using the gas-water separator 7. When the filling slurry is delivered to the front end of the gas-water separator 7, the gas valve 10 of the gas-water separator 7 is closed, and the filling slurry is delivered to the filling area 8.
[0022] A water outlet pipe 11 is fixedly connected to the filling pipeline 5 on the outlet side of the discharge valve 4. The inlet end of the water outlet pipe 11 is connected to the outlet of the production water pool 13 through a water injection pump 12. A water outlet valve 14 is installed on the water outlet pipe 11. After the grouting is completed, the production water pool 13 and the water injection pump 12 are used to pump production water into the filling pipeline 5, and the filling pipeline 5 is flushed with the production water.
[0023] An air outlet pipe 15 is fixedly connected to the filling pipeline 5 on the inlet end side of the feed valve 6, and the inlet end of the air outlet pipe 15 is connected to an air compressor 16. An air outlet valve 17 is installed on the air outlet pipe 15. The air compressor 16 and the air outlet pipe 15 are used to complete the secondary and tertiary flushing of the filling pipeline 5.
[0024] A pipeline sight glass 18 is installed on the pipeline between the feed valve 6 and the gas-water separator 7. The pipeline sight glass 18 is used to easily observe the flushing and filling conditions in the filling pipeline. During a flushing stage, when the pipeline sight glass 18 observes production water, it is convenient to close the feed valve 6 in time. During the grouting stage, when the filling slurry is delivered to the front end of the gas-water separator 7, it is also convenient to observe through the pipeline sight glass 18, close the gas valve 10 of the gas-water separator 7, and at this time, the air in the pipeline is emptied, and the filling slurry is delivered to the filling area 8.
[0025] It also includes a return water tank 19. A return water pipe 20 is fixedly connected to the filling pipeline 5 on the outlet side of the discharge valve 4. The outlet end of the return water pipe 20 is connected to the inlet of the return water tank 19. A return water valve 21 is installed on the return water pipe 20 to recycle the production water mixed with the filling slurry into the return water tank 19.
[0026] The specific operation process of this embodiment is as follows:
[0027] During grouting: open the discharge valve 4 and the inlet valve 6, and close the other valves. Use the gas-water separator 7 to exhaust the gas in the pipeline. When the filling slurry is delivered to the front end of the gas-water separator 7, close the gas valve 10 of the gas-water separator 7 and deliver the filling slurry to the filling area 8;
[0028] After the grouting is completed, the filling pipeline 5 is cleaned:
[0029] Forward clean water primary flushing: Use the production water pool 13 and the water injection pump 12 to pump production water into the filling pipeline 5, and use the production water to clean the filling pipeline 5. At this time, it is necessary to open the feed valve 6 and close other valves. The production water pushes the filling slurry into the filling area 8. When the production water is observed in the pipeline sight glass 18, when the production water enters the filling area 8, the feed valve 6 is closed in time to intercept the production water in the filling pipeline 5, soak the filling slurry in the filling pipeline 5, and use clean water to quickly and effectively clean the remaining slurry in the filling pipeline 5;
[0030] Reverse clean water secondary flushing: After the first flush after grouting, open the air compressor 16 and the air outlet valve 17, and at the same time open the return valve 21, and use high-pressure air (the air pressure must reach 6MPa and the air volume must meet 10 cubic meters / minute) in the reverse direction to backwash the primary flushing water in the filling pipeline 5. The gas disturbance of the air compressor 16 is used to push the production water into the return water tank 19. At this time, the production water mixed with the filling slurry flows back to the return water tank 19;
[0031] High-pressure air three-stage flushing: Continue to turn on the air compressor 16 and use high-pressure gas to achieve three-stage flushing of the filling pipeline 5. Use high-pressure air to flush out the residual aggregate and sediment in the filling pipeline 5 and discharge them into the return water tank 19, while reducing the water content in the filling pipeline 5.
[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. Filling pipe flushing and backwashing system, characterized by: It includes grouting workshop, mixing tank, filling pump, discharge valve, filling pipeline, feed valve, gas-water separator, water outlet pipe, production water pool, water outlet valve, air outlet pipe, air compressor, air outlet valve; The grouting workshop is provided with the stirring tank, the outlet of the stirring tank is connected to the inlet pipeline of the filling pump, the outlet of the filling pump is connected to the inlet end of the filling pipeline through the discharge valve, the outlet end of the filling pipeline is connected to the inlet pipeline of the gas-water separator through the feed valve, and the outlet of the gas-water separator is connected to the filling area; The filling pipeline on one side of the outlet end of the discharge valve is fixedly connected to the water outlet pipe, the inlet end of the water outlet pipe is connected to the outlet of the production water pool through a water injection pump, and the water outlet valve is installed on the water outlet pipe; The filling pipeline on one side of the inlet end of the feed valve is fixedly connected with the air outlet pipe, the inlet end of the air outlet pipe is connected to the air compressor, and the air outlet valve is installed on the air outlet pipe.
2. The filling pipe flushing and backwashing system according to claim 1, characterized in that: The gas outlet of the gas-water separator is connected to an exhaust pipe, and a gas valve is installed on the exhaust pipe.
3. The filling pipe flushing and backwashing system according to claim 2, characterized in that: A pipeline sight glass is installed on the pipeline between the feed valve and the gas-water separator.
4. The filling pipe flushing and backwashing system according to claim 3, characterized in that: It also includes a return water pool, a return water pipe is fixedly connected to the filling pipeline on one side of the outlet end of the discharge valve, the outlet end of the return water pipe is connected to the inlet of the return water pool, and a return water valve is installed on the return water pipe.