Water filtering system for condensation dehumidification and spray dust fall of mine and control method of water filtering system

Abstract

The invention discloses a water filtering system for mine condensation dehumidification and spray dust fall and a control method thereof.The system comprises a controller, filter cartridges, a shell, a fixator, a nozzle, a rotary connector, an explosion-proof motor, an electric ball valve, a pressure sensor, a water supply steel pipe and other components, and the system can achieve free switching of the double filter cartridges; meanwhile, the controller is used for autonomously controlling spraying to be started according to the pressure difference value of a water inlet and a water outlet of the filter cartridge, automatic cleaning and decontamination of the filter cartridge are achieved through rotary spraying, continuous and automatic supply of clean water needed by an underground coal mine condensation dehumidifier and a spraying device is guaranteed, the adaptive capacity is high, the automation degree is high, and stability is good; and the purposes of no manual operation and automatic cleaning can be achieved, so that the workload of underground workers can be effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mine water purification, and in particular to a mine water filtration system for condensation dehumidification and spray dust reduction and a control method thereof. Background Art

[0002] With the increasing exploitation of coal resources, underground coal mines in central and eastern my country are generally mined in depth, and their depths often exceed 800m, making the problem of high temperature heat damage more prominent. In addition, due to factors such as groundwater seepage and limited ventilation, deep mines generally have high humidity problems, resulting in a relatively poor working environment for mine workers and prone to rheumatic diseases. In addition, a large amount of coal dust will be generated in the process of coal mining and transportation, which seriously affects the health of underground workers and the safe production of enterprises. At present, coal mining enterprises generally use condensation dehumidification and spray dust reduction to improve the underground working environment, but the above measures have high requirements for water quality. However, secondary circulating water is generally used for production water in coal mines. Due to limited purification technology, the secondary circulating water itself usually contains a large amount of impurities, such as suspended matter and minerals. If a water source containing impurities is directly used for condensation dehumidification or spray dust reduction, many problems will arise. For example, during condensation dehumidification in mines, impurities may adhere to the heat exchange surface of the dehumidification equipment, reducing the heat exchange efficiency; during spray dust reduction, impurities may clog the spray nozzle, affecting the dust reduction effect.

[0003] At present, in response to the problem of mine water quality, Chinese patent CN115382285A discloses a backwashing system for a filter in a coal mine underground water supply pipeline, which changes the direction of water flow by controlling the valve opening to realize backwashing of the filter and discharge impurities attached to the filter out of the water supply pipe. However, the filter is directly backwashed with water containing impurities, which easily causes impurities to adhere to the inside of the filter and affect the filtering effect. At the same time, the filter is flushed with water in the reverse flow, but the impurity removal effect is not good, and the patent cannot realize automatic backwashing, and cannot remove impurities in time to affect the filtering effect of the device; Chinese patent CN113384938A discloses a large filter surface self-cleaning filter for a coal mine underground spray device, which uses the impact of water flow to drive a spiral cleaner to remove impurities from the filter. However, the coal mine is affected by the water used in other working faces, and the water impact force is easily affected and the rotation of the spiral cleaner cannot be realized. At the same time, the spiral cleaner brush and the filter are easily stuck due to the influence of impurities, and the invention cannot realize automatic cleaning. In summary, in order to solve the problem of water purification for condensation dehumidification and spray dust reduction in coal mines, there is an urgent need for an intelligent flushing water filter with strong adaptability, high degree of automation and good stability. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the first purpose of the present invention is to propose a water quality filtration system for mine condensation dehumidification and spray dust reduction, which can realize the free switching of double filter cartridges, and at the same time use a controller to autonomously control the spray opening according to the pressure difference between the inlet and outlet of the filter cartridge, and use rotary spray to realize automatic cleaning and decontamination of the filter cartridge, thereby ensuring the continuous automatic supply of clean water required by the underground coal mine condensation dehumidifier and spray device, with strong adaptability, high degree of automation, good stability, and can achieve the purpose of automatic cleaning without manual operation, thereby effectively reducing the workload of underground workers.

[0005] The second object of the present invention is to provide a control method for a water quality filtration system used for mine condensation dehumidification and spray dust reduction.

[0006] To achieve the above-mentioned purpose, the first embodiment of the present invention proposes a water quality filtration system for mine condensation dehumidification and spray dust reduction, the system comprising:

[0007] A first filter, the first filter comprising: a first filter housing, a first filter cartridge, a first filter container and a first water supply steel pipe, the first filter cartridge is arranged inside the first filter housing, the middle part between the first filter housing and the first filter cartridge is the first filter container, the first water supply steel pipe is arranged inside the first filter cartridge, and the first water supply steel pipe is provided with a first nozzle group; the lower end of the first water supply steel pipe is connected to a first rotating joint, and the first rotating joint is connected to a first explosion-proof motor through a first belt; the lower end of the first filter container is provided with a first sewage outlet, and the first sewage outlet is installed with a third electric ball valve;

[0008] A second filter, the second filter comprising: a second filter housing, a second filter cartridge, a second filter container and a second water supply steel pipe, the second filter cartridge is arranged inside the second filter housing, the middle part between the second filter housing and the second filter cartridge is the second filter container, the second water supply steel pipe is arranged inside the second filter cartridge, and a second nozzle group is arranged on the second water supply steel pipe; the lower end of the second water supply steel pipe is connected to a second rotary joint, and the second rotary joint is connected to a second explosion-proof motor through a second belt; the lower end of the second filter container is provided with a second sewage outlet, and the second sewage outlet is installed with a fourth electric ball valve;

[0009] The water supply pipe is connected to the water inlet of the first filter housing and the water inlet of the second filter housing respectively through a first tee, a first electric ball valve and a first pressure sensor are provided on the pipeline between the first tee and the first filter housing, and a second electric ball valve and a second pressure sensor are provided on the pipeline between the first tee and the second filter housing; the lower end water outlet of the first filter housing and the lower end water outlet of the second filter housing are connected through a second tee, a third pressure sensor, a fifth electric ball valve, and a fourth tee are provided in sequence on the pipeline between the first filter housing and the second tee, a fourth pressure sensor, a sixth electric ball valve, and a fifth tee are provided in sequence on the pipeline between the second filter housing and the second tee, and the second tee is connected to the condensation dehumidification system and the spray dust reduction system respectively through the third tee; the first rotary joint and the fifth tee are connected through a pressure-resistant hose, and a seventh electric ball valve is provided; the second rotary joint and the fourth tee are connected through a pressure-resistant water pipe, and an eighth electric ball valve is provided;

[0010] The first electric ball valve, the second electric ball valve, the first pressure sensor, the second pressure sensor, the third pressure sensor, the fourth pressure sensor, the third electric ball valve, the fourth electric ball valve, the fifth electric ball valve, the sixth electric ball valve, the seventh electric ball valve, the eighth electric ball valve, the first explosion-proof motor, and the second explosion-proof motor are respectively connected to the controller for communication. The controller is used to control each electric ball valve and each explosion-proof motor according to the pressure difference between the first pressure sensor and the third pressure sensor, so that the first filter switches to the second filter for filtering sewage, and provides the first nozzle group with filtered pure water, so as to clean and decontaminate the first filter cartridge by rotating spray; or, according to the pressure difference between the second pressure sensor and the fourth pressure sensor, control each electric ball valve and each explosion-proof motor, so that the second filter switches to the first filter for filtering sewage, and provides the second nozzle group with filtered pure water, so as to clean and decontaminate the second filter cartridge by rotating spray.

[0011] In addition, the water quality filtration system for mine condensation dehumidification and spray dust reduction according to the above embodiment of the present invention may also have the following additional technical features:

[0012] According to an embodiment of the present invention, the controller controls each electric ball valve and each explosion-proof motor according to the pressure difference between the first pressure sensor and the third pressure sensor, so as to switch from filtering sewage by the first filter to filtering sewage by the second filter, and provide the first nozzle group with filtered pure water, so as to clean and decontaminate the first filter cartridge by rotary spray, including: opening the first electric ball valve and the fifth electric ball valve, closing the other electric ball valves, introducing sewage containing impurities into the water supply pipe, and monitoring the pressure values ​​of the upper and lower ends of the first filter housing by the first pressure sensor and the third pressure sensor; when the pressure difference between the first pressure sensor and the third pressure sensor is greater than or equal to the preset difference, controlling the first electric ball valve and the fifth electric ball valve to be closed, controlling the second electric ball valve, the sixth electric ball valve, the seventh electric ball valve, and the third electric ball valve to be opened, and controlling the first explosion-proof motor to be turned on, so as to drive the first water supply steel pipe to rotate through the first belt, so as to clean and decontaminate the first filter cartridge; when the working time of the first explosion-proof motor reaches the preset time, controlling the seventh electric ball valve, the third electric ball valve, and the first explosion-proof motor to be closed at the same time.

[0013] According to one embodiment of the present invention, the controller controls each electric ball valve and each explosion-proof motor according to the pressure difference between the second pressure sensor and the fourth pressure sensor, so as to switch from filtering sewage by the second filter to filtering sewage by the first filter, and provide filtered pure water to the second nozzle group, so as to clean and decontaminate the second filter cartridge by rotary spray, including: when the pressure difference between the second pressure sensor and the fourth pressure sensor is greater than or equal to a preset difference, controlling the second electric ball valve and the sixth electric ball valve to close, controlling the first electric ball valve, the fifth electric ball valve, the eighth electric ball valve, and the fourth electric ball valve to open, and controlling the second explosion-proof motor to start, so as to drive the second water supply steel pipe to rotate through the second belt, so as to clean and decontaminate the second filter cartridge; when the working time of the second explosion-proof motor reaches the preset time, controlling the eighth electric ball valve, the fourth electric ball valve, and the second explosion-proof motor to close at the same time.

[0014] According to one embodiment of the present invention, a first fixer is provided above the first water supply steel pipe and a second fixer is provided below the first water supply steel pipe for fixing the first water supply steel pipe; a third fixer is provided above the second water supply steel pipe and a fourth fixer is provided below the second water supply steel pipe for fixing the second water supply steel pipe.

[0015] According to one embodiment of the present invention, the first nozzle group arranges multiple nozzles above and below the center of the first water supply steel pipe, and they are rotated 180° to overlap; the second nozzle group arranges multiple nozzles above and below the center of the second water supply steel pipe, and they are rotated 180° to overlap.

[0016] According to one embodiment of the present invention, the arrangement manner of the first nozzle group in the first water supply steel pipe is: 5 nozzles are evenly arranged in the upper half of the right side of the first water supply steel pipe, with an interval of 8-10cm, and 5 nozzles are evenly arranged in the lower half of the left side, with an interval of 8-10cm; the arrangement manner of the second nozzle group in the second water supply steel pipe is: 5 nozzles are evenly arranged in the upper half of the right side of the second water supply steel pipe, with an interval of 8-10cm, and 5 nozzles are evenly arranged in the lower half of the left side, with an interval of 8-10cm.

[0017] According to one embodiment of the present invention, the rotation speeds of the first rotary joint and the second rotary joint are adjustable at 30-60 r / min.

[0018] To achieve the above object, the second embodiment of the present invention proposes a control method for the water quality filtration system used for the above-mentioned mine condensation dehumidification and spray dust reduction, the method comprising:

[0019] Controlling the first filter to filter sewage, and obtaining a pressure difference between a water inlet and a water outlet of the first filter;

[0020] When the pressure difference between the water inlet and the water outlet of the first filter is greater than or equal to a preset difference, the second filter is switched to filter the sewage, and the first filter cartridge of the first filter is cleaned and decontaminated within a preset time;

[0021] Obtaining a pressure difference between a water inlet and a water outlet of the second filter;

[0022] When the pressure difference between the water inlet and the water outlet of the second filter is greater than or equal to a preset difference, the first filter is switched to filter the sewage, and the second filter cartridge of the second filter is cleaned and decontaminated within a preset time.

[0023] According to one embodiment of the present invention, the second filter is switched to filter sewage, and the first filter cartridge of the first filter is cleaned and decontaminated within a preset time, including: controlling the first electric ball valve and the fifth electric ball valve to be closed, controlling the second electric ball valve, the sixth electric ball valve, the seventh electric ball valve, and the third electric ball valve to be opened, and controlling the first explosion-proof motor to be turned on, so as to drive the first water supply steel pipe to rotate through the first belt, so as to clean and decontaminate the first filter cartridge; when the working time of the first explosion-proof motor reaches the preset time, controlling the seventh electric ball valve, the third electric ball valve, and the first explosion-proof motor to be closed at the same time.

[0024] According to one embodiment of the present invention, switching the first filter to filter sewage, and cleaning and decontaminating the second filter cartridge of the second filter within a preset time, comprises:

[0025] When the pressure difference between the second pressure sensor and the fourth pressure sensor is greater than or equal to a preset difference, the second electric ball valve and the sixth electric ball valve are controlled to be closed, the first electric ball valve, the fifth electric ball valve, the eighth electric ball valve, and the fourth electric ball valve are controlled to be opened, and the second explosion-proof motor is controlled to be turned on, so as to drive the second water supply steel pipe to rotate through the second belt, so as to clean and decontaminate the second filter cartridge;

[0026] When the working time of the second explosion-proof motor reaches a preset time, the eighth electric ball valve, the fourth electric ball valve and the second explosion-proof motor are controlled to be closed simultaneously.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The intelligent flushing water filter designed by the present invention overcomes the problems of untimely cleaning and low automation of existing mining water filters. The proposed intelligent flushing system uses the pressure sensor set at the inlet and outlet of the filter cartridge to monitor the pressure difference between the inlet and outlet water in real time. Once the pressure difference exceeds the limit, the controller takes measures to flush the filter cartridge with attached impurities, thereby achieving the purpose of automatic cleaning without manual operation.

[0029] 2. The cleaning and decontamination system designed by the present invention, on the one hand, utilizes purified clean water to clean the filter cartridge, thereby solving the problem that the existing mining water quality filters generally use impurity-containing water to backwash the filter screen, which causes internal pollution and affects the filtering effect; at the same time, a high-speed spray field is formed by a nozzle, and the high-speed impact force of the water mist is used to wash the filter cartridge with impurities attached, thereby solving the problem of weak water flow washing capacity of the existing mining filters; in addition, an explosion-proof motor is used to drive the water supply steel pipe equipped with multiple nozzles to rotate, forming a 360° high-speed water mist cleaning surface with no dead angles, which can comprehensively clean the filter cartridge all around, effectively remove impurities, extend the service life of the filter cartridge, and solve the problem of insufficient self-cleaning capacity of the existing mining filters.

[0030] 3. The intelligent flushing water filter designed by the present invention realizes the integrated control of the filtration of mine production water and the automatic cleaning of the filter by the coordinated control of the controller, electric ball valve and pressure sensor. By setting two filter cartridges, once the pressure difference between the inlet and outlet of one filter cartridge exceeds the limit and needs to be cleaned, the controller automatically switches to other clean filter cartridges by controlling the opening state of the electric ball valve to meet the production water filtration requirements, ensuring the continuous cleaning of production water, without stopping the supply of condensation dehumidification and spray dust reduction water due to filter cleaning. In addition, this set of water quality filters has a high degree of integration and intelligence, which effectively reduces the workload of underground workers.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of a water quality filtration system for mine condensation dehumidification and spray dust reduction according to an embodiment of the present invention;

[0033] Figure 2 The present invention is a flow chart of a water quality filtration system for mine condensation dehumidification and spray dust reduction according to an embodiment of the present invention.

[0034] Reference numerals:

[0035] 1. Water supply pipe; 2. First three-way; 3. Second electric ball valve; 4. First electric ball valve; 5. First pressure sensor; 6. Second pressure sensor; 7. Controller; 8. First filter housing; 9. First filter container; 10. First filter cartridge; 11. First sewage outlet; 12. First bracket; 13. Third electric ball valve; 14. First fixture; 15. First nozzle group; 16. Second fixture; 17. Third pressure sensor; 18. Seventh electric ball valve; 19. First rotary joint; 20. First explosion-proof motor; 21. Fifth electric ball valve; 22. Third fixture; 23. Second filter 1. the second filter housing; 24. the second filter cartridge; 25. the second nozzle group; 26. the second filter container; 27. the fourth fixture; 28. the second sewage outlet; 29. ​​the fourth electric ball valve; 30. the fourth pressure sensor; 31. the second belt; 32. the second bracket; 33. the second explosion-proof motor; 34. the second rotary joint; 35. the eighth electric ball valve; 36. the sixth electric ball valve; 37. the second three-way valve; 38. the condensation dehumidification system; 39. the third three-way valve; 40. the spray dust suppression system; 41. the fifth three-way valve; 42. the first water supply steel pipe; 43. the first belt; 44. the second water supply steel pipe; 45. the fourth three-way valve. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0037] The following describes the water quality filtration system and control method for mine condensation dehumidification and spray dust reduction proposed in the embodiment of the present invention with reference to the accompanying drawings.

[0038] like Figure 1 As shown, the water quality filtration system for mine condensation dehumidification and spray dust reduction in an embodiment of the present invention may include: a first filter, a second filter and a controller 7.

[0039] Among them, the first filter includes: a first filter housing 8, a first filter cartridge 10, a first filter container 9 and a first water supply steel pipe 42. The first filter cartridge 10 is arranged inside the first filter housing 8. The middle part of the first filter housing 8 and the first filter cartridge 10 is the first filter container 9. The first water supply steel pipe 42 is arranged inside the first filter cartridge 10. The first water supply steel pipe 42 is provided with a first nozzle group 15; the lower end of the first water supply steel pipe 42 is connected to the first rotary joint 19, and the first rotary joint 19 is connected to the first explosion-proof motor 20 through the first belt 43; the lower end of the first filter container 9 is provided with a first sewage outlet 11, and the first sewage outlet 11 is installed with a third electric ball valve 13.

[0040] The second filter includes: a second filter housing 23, a second filter cartridge 24, a second filter container 26 and a second water supply steel pipe 44. The second filter cartridge 24 is arranged inside the second filter housing 23. The middle part between the second filter housing 23 and the second filter cartridge 24 is the second filter container 26. The second water supply steel pipe 44 is arranged inside the second filter cartridge 24. The second water supply steel pipe 44 is provided with a second nozzle group 25. The lower end of the second water supply steel pipe 44 is connected to the second rotary joint 34, and the second rotary joint 34 is connected to the second explosion-proof motor 33 through the second belt 31. The lower end of the second filter container 26 is provided with a second sewage outlet 28, and the second sewage outlet 28 is installed with a fourth electric ball valve 29.

[0041] The water supply pipe 1 is connected to the water inlet of the first filter housing 8 and the water inlet of the second filter housing 23 respectively through the first tee 2. The pipeline between the first tee 2 and the first filter housing 8 is provided with a first electric ball valve 4 and a first pressure sensor 5. The pipeline between the first tee 2 and the second filter housing 23 is provided with a second electric ball valve 3 and a second pressure sensor 6. The lower end water outlet of the first filter housing 8 is connected to the lower end water outlet of the second filter housing 23 through the second tee 37. The pipeline between the first filter housing 8 and the second tee 37 is provided with a third electric ball valve 4 and a second pressure sensor 5 in sequence. The pressure sensor 17, the fifth electric ball valve 21, the fourth three-way valve 45, the fourth pressure sensor 30, the sixth electric ball valve 36, the fifth three-way valve 41 are arranged in sequence on the pipeline between the second filter housing 23 and the second three-way valve 37. The second three-way valve 37 is connected to the condensation dehumidification system 38 and the spray dust reduction system 40 respectively through the third three-way valve 39; the first rotary joint 19 and the fifth three-way valve 41 are connected by a pressure-resistant rubber hose, and a seventh electric ball valve 18 is arranged; the second rotary joint 34 and the fourth three-way valve 45 are connected by a pressure-resistant water pipe, and an eighth electric ball valve 35 is arranged.

[0042] The first electric ball valve 4, the second electric ball valve 3, the first pressure sensor 5, the second pressure sensor 6, the third pressure sensor 17, the fourth pressure sensor 30, the third electric ball valve 13, the fourth electric ball valve 29, the fifth electric ball valve 21, the sixth electric ball valve 36, the seventh electric ball valve 18, the eighth electric ball valve 35, the first explosion-proof motor 20, and the second explosion-proof motor 33 are respectively connected to the controller 7 for communication; the controller 7 is used to control each electric ball valve and each explosion-proof motor according to the pressure difference between the first pressure sensor 5 and the third pressure sensor 17, so that the sewage filtering by the first filter is switched to the sewage filtering by the second filter, and the first nozzle group 15 is provided with filtered pure water, so as to clean and decontaminate the first filter cartridge 10 by rotary spray; or, according to the pressure difference between the second pressure sensor 6 and the fourth pressure sensor 30, each electric ball valve and each explosion-proof motor is controlled to switch from filtering the sewage by the second filter to filtering the sewage by the first filter, and the second nozzle group 25 is provided with filtered pure water, so as to clean and decontaminate the second filter cartridge 24 by rotary spray.

[0043] Further, according to an embodiment of the present invention, the controller 7 controls each electric ball valve and each explosion-proof motor according to the pressure difference between the first pressure sensor 5 and the third pressure sensor 17, so as to switch from filtering sewage by the first filter to filtering sewage by the second filter, and provide filtered pure water to the first nozzle group 15, so as to clean and decontaminate the first filter cartridge 10 by rotary spray, including: opening the first electric ball valve 4 and the fifth electric ball valve 21, closing the other electric ball valves, introducing sewage containing impurities at the water supply pipe 1, and monitoring the first filter housing through the first pressure sensor 5 and the third pressure sensor 17. 8; when the pressure difference between the first pressure sensor 5 and the third pressure sensor 17 is greater than or equal to the preset difference, the first electric ball valve 4 and the fifth electric ball valve 21 are controlled to be closed, the second electric ball valve 3, the sixth electric ball valve 36, the seventh electric ball valve 18, and the third electric ball valve 13 are controlled to be opened, and the first explosion-proof motor 20 is controlled to be turned on, so as to drive the first water supply steel pipe 42 to rotate through the first belt 43, so as to clean and decontaminate the first filter cartridge 10; when the working time of the first explosion-proof motor 20 reaches the preset time, the seventh electric ball valve 18, the third electric ball valve 13, and the first explosion-proof motor 20 are controlled to be closed at the same time. Among them, the preset difference and the preset time can be calibrated according to the actual situation. For example, the preset difference can be 0.03MPa, and the preset time can be 3-6min.

[0044] Further, according to an embodiment of the present invention, the controller 7 controls each electric ball valve and each explosion-proof motor according to the pressure difference between the second pressure sensor 6 and the fourth pressure sensor 30, so as to switch from filtering sewage by the second filter to filtering sewage by the first filter, and provide filtered pure water to the second nozzle group 25, so as to clean and decontaminate the second filter cartridge 24 by rotary spray, including: when the pressure difference between the second pressure sensor 6 and the fourth pressure sensor 30 is greater than or equal to the preset difference, the second electric ball valve 3 and the sixth electric ball valve 36 are controlled to be closed, the first electric ball valve 4, the fifth electric ball valve 21, the eighth electric ball valve 35, and the fourth electric ball valve 29 are controlled to be opened, and the second explosion-proof motor 33 is controlled to be turned on, so as to drive the second water supply steel pipe 44 to rotate through the second belt 31, so as to clean and decontaminate the second filter cartridge 24; when the working time of the second explosion-proof motor 33 reaches the preset time, the eighth electric ball valve 35, the fourth electric ball valve 29, and the second explosion-proof motor 33 are controlled to be closed at the same time.

[0045] Specifically, if Figure 1As shown, when the system is working, the first filter is first used to filter the sewage containing impurities. At this time, the controller 7 opens the first electric ball valve 4 and the fifth electric ball valve 21, and the other electric ball valves are closed. The sewage containing impurities is introduced into the water supply pipe 1, and the sewage flows into the first filter cartridge 10 for filtration. The purified water obtained after filtration flows out from the lower water outlet of the first filter housing 8, and passes through the fifth electric ball valve 21, the second three-way valve 37, and the third three-way valve 39 to supply water to the condensation dehumidification system 38 and the spray dust reduction system 40. The controller 7 monitors the pressure values ​​of the water inlet and the water outlet of the first filter through the first pressure sensor 5 and the third pressure sensor 17, respectively, and obtains the pressure difference between the water inlet and the water outlet of the first filter in real time. When the pressure difference between the water inlet and the water outlet of the first filter is greater than or equal to the preset difference, it means that there are too many impurities attached to the first filter cartridge 10 and the first filter cartridge 10 needs to be flushed. At this time, the controller 7 controls the first electric ball valve 4 and the fifth electric ball valve 21 to close, and controls the second electric ball valve 3, the sixth electric ball valve 36, the seventh electric ball valve 18, and the third electric ball valve 13 to open. The sewage in the water supply pipe 1 flows into the second filter and is filtered by the second filter cartridge 24. The purified water obtained after filtration flows out from the lower water outlet of the second filter housing 23 and passes through the sixth electric ball valve 36, the second three-way valve 37, the third three-way valve 18 and the fourth three-way valve 19. The passage 39 supplies water to the condensation dehumidification system 38 and the spray dust reduction system 40 respectively. At the same time, the pure water flows into the first water supply steel pipe 42 through the fifth three-way passage 41, the seventh electric ball valve 18, and the first rotary joint 19, and is sprayed out from the first nozzle group 15; at the same time, the controller 7 controls the first explosion-proof motor 20 to start, so as to drive the first water supply steel pipe 42 to rotate through the first belt 43, and the pure water sprayed from the first nozzle group 15 forms a high-speed spray field, and the high-speed impact force of the water mist is used to rinse and decontaminate the first filter cartridge 10 attached with impurities, and the generated sewage enters the first filter container 9 and is discharged through the first sewage outlet 11 and the third electric ball valve 13.

[0046] Furthermore, in the process of the second filter filtering sewage, the controller 7 monitors the pressure values ​​of the water inlet and the water outlet of the second filter respectively through the second pressure sensor 6 and the fourth pressure sensor 30, and obtains the pressure difference between the water inlet and the water outlet of the second filter in real time. When the pressure difference between the water inlet and the water outlet of the second filter is greater than or equal to the preset difference, it means that there are too many impurities attached to the second filter cartridge 24, and the second filter cartridge 24 needs to be flushed. At this time, the controller 7 controls the second electric ball valve 3 and the sixth electric ball valve 36 to close, and controls the first electric ball valve 4, the fifth electric ball valve 21, the eighth electric ball valve 35, and the fourth electric ball valve 29 to open, and the sewage in the water supply pipe 1 flows into the first filter and is filtered by the first filter cartridge 10. The purified water obtained after filtration flows out from the lower water outlet of the first filter housing 8 and passes through the fifth electric ball valve 21, the second three-way valve 37, and the third three-way valve 39. The condensation dehumidification system 38 and the spray dust suppression system 40 are respectively supplied with water, and the purified water flows into the second water supply steel pipe 44 through the fourth three-way 45, the eighth electric ball valve 35, and the second rotary joint 34, and is sprayed out from the second nozzle group 25; at the same time, the controller 7 controls the second explosion-proof motor 33 to start, so as to drive the second water supply steel pipe 44 to rotate through the second belt 31, and the purified water sprayed from the second nozzle group 25 forms a high-speed spray field, and the high-speed impact force of the water mist is used to wash and decontaminate the second filter cartridge 24 with attached impurities, and the generated sewage enters the second filter container 26 and is discharged through the second sewage outlet 28 and the fourth electric ball valve 29. In this way, the free switching of the double filter cartridges is realized, and the spray is autonomously controlled by the controller 7 to start, and the filter cartridge is automatically cleaned and decontaminated by the rotary spray.

[0047] According to one embodiment of the present invention, Figure 1 As shown, a first fixer 14 is provided above the first water supply steel pipe 42 and a second fixer 16 is provided below the first water supply steel pipe 42 for fixing the first water supply steel pipe 42; a third fixer 22 is provided above the second water supply steel pipe 44 and a fourth fixer 27 is provided below the second water supply steel pipe 44 for fixing the second water supply steel pipe 44.

[0048] According to one embodiment of the present invention, Figure 1 As shown, the first nozzle group 15 arranges multiple nozzles above and below the center of the first water supply steel pipe 42, and they are rotated 180° to overlap; the second nozzle group 25 arranges multiple nozzles above and below the center of the second water supply steel pipe 44, and they are rotated 180° to overlap.

[0049] Further, according to one embodiment of the present invention, Figure 1As shown, the arrangement of the first nozzle group 15 in the first water supply steel pipe 42 is: 5 nozzles are evenly arranged in the upper right half of the first water supply steel pipe 42, with an interval of 8-10cm, and 5 nozzles are evenly arranged in the lower left half, with an interval of 8-10cm; the arrangement of the second nozzle group 25 in the second water supply steel pipe 44 is: 5 nozzles are evenly arranged in the upper right half of the second water supply steel pipe 44, with an interval of 8-10cm, and 5 nozzles are evenly arranged in the lower left half, with an interval of 8-10cm. Through the above arrangement, and using an explosion-proof motor to drive the water supply steel pipe equipped with multiple nozzles to rotate, a 360° high-speed water mist cleaning surface with no dead angle is formed, which can fully clean the filter cartridge around, effectively remove impurities, extend the service life of the filter cartridge, and solve the problem of insufficient self-cleaning ability of existing mining filters.

[0050] According to one embodiment of the present invention, the rotation speeds of the first rotary joint 19 and the second rotary joint 34 are adjustable at 30-60 r / min.

[0051] According to one embodiment of the present invention, the water pressure of the system is no higher than 8 MPa.

[0052] According to one embodiment of the present invention, Figure 1 As shown, the first filter is mounted on the first bracket 12 , and the second filter is mounted on the second bracket 32 ​​.

[0053] Corresponding to the above-mentioned embodiment, the present invention also proposes a control method for a water quality filtration system used for mine condensation dehumidification and spray dust reduction.

[0054] Figure 2 The present invention is a flow chart of a control method for a water quality filtration system for mine condensation dehumidification and spray dust reduction according to an embodiment of the present invention.

[0055] like Figure 2 As shown, the control method of the water quality filtration system for mine condensation dehumidification and spray dust reduction in the embodiment of the present invention may include the following steps:

[0056] S1, controlling the first filter to filter sewage, and obtaining the pressure difference between the water inlet and the water outlet of the first filter.

[0057] S2, when the pressure difference between the water inlet and the water outlet of the first filter is greater than or equal to a preset difference, switching to the second filter to filter the sewage, and cleaning and decontaminating the first filter cartridge of the first filter within a preset time;

[0058] S3, obtaining a pressure difference between a water inlet and a water outlet of the second filter.

[0059] S4, when the pressure difference between the water inlet and the water outlet of the second filter is greater than or equal to a preset difference, switch the first filter to filter the sewage, and clean and decontaminate the second filter cartridge of the second filter within a preset time.

[0060] According to one embodiment of the present invention, the second filter is switched to filter sewage, and the first filter cartridge of the first filter is cleaned and decontaminated within a preset time, including: controlling the first electric ball valve and the fifth electric ball valve to close, controlling the second electric ball valve, the sixth electric ball valve, the seventh electric ball valve, and the third electric ball valve to open, and controlling the first explosion-proof motor to turn on, so as to drive the first water supply steel pipe to rotate through the first belt, so as to clean and decontaminate the first filter cartridge; when the working time of the first explosion-proof motor reaches the preset time, controlling the seventh electric ball valve, the third electric ball valve, and the first explosion-proof motor to close at the same time.

[0061] According to one embodiment of the present invention, the first filter is switched to filter sewage, and the second filter cartridge of the second filter is cleaned and decontaminated within a preset time, including: when the pressure difference between the second pressure sensor and the fourth pressure sensor is greater than or equal to the preset difference, the second electric ball valve and the sixth electric ball valve are controlled to be closed, the first electric ball valve, the fifth electric ball valve, the eighth electric ball valve, and the fourth electric ball valve are controlled to be opened, and the second explosion-proof motor is controlled to be turned on to drive the second water supply steel pipe to rotate through the second belt to clean and decontaminate the second filter cartridge; when the working time of the second explosion-proof motor reaches the preset time, the eighth electric ball valve, the fourth electric ball valve, and the second explosion-proof motor are controlled to be closed at the same time.

[0062] The following is a detailed description of a control method for a water quality filtration system for mine condensation dehumidification and spray dust reduction according to an embodiment of the present invention, which may include the following steps:

[0063] S101: Open the first electric ball valve and the fifth electric ball valve through the controller, and close the other electric ball valves, introduce sewage containing impurities into the water supply pipe, and monitor the pressure values ​​at the upper and lower ends of the first filter housing through the first pressure sensor and the third pressure sensor.

[0064] S102: When the pressure difference between the first pressure sensor and the third pressure sensor reaches 0.03MPa (preset difference), the controller controls the first electric ball valve and the fifth electric ball valve to close, and controls the second electric ball valve, the sixth electric ball valve, the seventh electric ball valve and the third electric ball valve to open, and the controller controls the first explosion-proof motor to turn on, and drives the first water supply steel pipe to rotate through the first belt.

[0065] S103: Set the working time of the first explosion-proof motor to 3-6 minutes (preset time), the opening time of the seventh electric ball valve and the third electric ball valve is equal to the working time of the first explosion-proof motor, when the working time of the first explosion-proof motor is 3-6 minutes, the controller controls the seventh electric ball valve, the third electric ball valve, and the first explosion-proof motor to close at the same time

[0066] S104: When the pressure difference between the second pressure sensor and the fourth pressure sensor reaches 0.03MPa, the controller controls the second electric ball valve and the sixth electric ball valve to close, and controls the first electric ball valve, the fifth electric ball valve, the eighth electric ball valve and the fourth electric ball valve to open, and the controller controls the second explosion-proof motor to turn on, and drives the second water supply steel pipe to rotate through the second belt.

[0067] S105: Set the working time of the second explosion-proof motor to 3-6 minutes, the opening time of the eighth electric ball valve and the fourth electric ball valve is equal to the working time of the second explosion-proof motor, and when the working time of the first explosion-proof motor is 3-6 minutes, the controller controls the eighth electric ball valve, the fourth electric ball valve and the second explosion-proof motor to close at the same time.

[0068] S106: Repeat steps S102-S105 to ensure that the sewage is continuously purified to meet the water demand for condensation dehumidification and spray dust reduction in the mine.

[0069] It should be noted that for details not disclosed in the control method of the water quality filtration system for mine condensation dehumidification and spray dust reduction in the embodiment of the present invention, please refer to the details disclosed in the water quality filtration system for mine condensation dehumidification and spray dust reduction in the embodiment of the present invention, and the details will not be repeated here.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0071] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0072] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A water quality filtration system for mine condensation dehumidification and spray dust reduction, characterized in that: The system comprises: A first filter, the first filter comprising: a first filter housing (8), a first filter cartridge (10), a first filter container (9) and a first water supply steel pipe (42), the first filter cartridge (10) being arranged inside the first filter housing (8), the middle part between the first filter housing (8) and the first filter cartridge (10) being the first filter container (9), the first water supply steel pipe (42) being arranged inside the first filter cartridge (10), the first water supply steel pipe (42) being provided with a first nozzle group (15); the lower end of the first water supply steel pipe (42) being connected to a first rotating joint (19), the first rotating joint (19) being connected to a first explosion-proof motor (20) via a first belt (43); the lower end of the first filter container (9) being provided with a first sewage outlet (11), the first sewage outlet (11) being provided with a third electric ball valve (13); a second filter, the second filter comprising: a second filter housing (23), a second filter cartridge (24), a second filter container (26) and a second water supply steel pipe (44); the second filter cartridge (24) is arranged inside the second filter housing (23); the middle part between the second filter housing (23) and the second filter cartridge (24) is the second filter container (26); the second water supply steel pipe (44) is arranged inside the second filter cartridge (24); a second nozzle group (25) is arranged on the second water supply steel pipe (44); the lower end of the second water supply steel pipe (44) is connected to a second rotary joint (34); the second rotary joint (34) is connected to a second explosion-proof motor (33) via a second belt (31); a second sewage outlet (28) is arranged at the lower end of the second filter container (26); a fourth electric ball valve (29) is installed on the second sewage outlet (28); The water supply pipe (1) is connected to the water inlet of the first filter housing (8) and the water inlet of the second filter housing (23) respectively through a first tee (2); a first electric ball valve (4) and a first pressure sensor (5) are provided on the pipeline between the first tee (2) and the first filter housing (8); a second electric ball valve (3) and a second pressure sensor (6) are provided on the pipeline between the first tee (2) and the second filter housing (23); the lower water outlet of the first filter housing (8) and the lower water outlet of the second filter housing (23) are connected through a second tee (37); and the pipeline between the first filter housing (8) and the second tee (37) is provided with A third pressure sensor (17), a fifth electric ball valve (21), and a fourth three-way valve (45); a fourth pressure sensor (30), a sixth electric ball valve (36), and a fifth three-way valve (41) are sequentially arranged on the pipeline between the second filter housing (23) and the second three-way valve (37); the second three-way valve (37) is respectively connected to the condensation dehumidification system (38) and the spray dust suppression system (40) through the third three-way valve (39); the first rotary joint (19) and the fifth three-way valve (41) are connected through a pressure-resistant hose, and a seventh electric ball valve (18) is arranged; the second rotary joint (34) and the fourth three-way valve (45) are connected through a pressure-resistant water pipe, and an eighth electric ball valve (35) is arranged; The first electric ball valve (4), the second electric ball valve (3), the first pressure sensor (5), the second pressure sensor (6), the third pressure sensor (17), the fourth pressure sensor (30), the third electric ball valve (13), the fourth electric ball valve (29), the fifth electric ball valve (21), the sixth electric ball valve (36), the seventh electric ball valve (18), the eighth electric ball valve (35), the first explosion-proof motor (20), and the second explosion-proof motor (33) are respectively connected to the controller (7) for communication; the controller (7) is used to, according to the pressure between the first pressure sensor (5) and the third pressure sensor (17), According to the pressure difference, each electric ball valve and each explosion-proof motor are controlled to switch from filtering sewage by the first filter to filtering sewage by the second filter, and to provide filtered pure water to the first nozzle group (15) so as to clean and decontaminate the first filter cartridge (10) by means of rotary spray; or, according to the pressure difference between the second pressure sensor (6) and the fourth pressure sensor (30), each electric ball valve and each explosion-proof motor are controlled to switch from filtering sewage by the second filter to filtering sewage by the first filter, and to provide filtered pure water to the second nozzle group (25) so as to clean and decontaminate the second filter cartridge (24) by means of rotary spray.

2. The water quality filtration system for mine condensation dehumidification and spray dust reduction according to claim 1 is characterized in that: The controller (7) controls each electric ball valve and each explosion-proof motor according to the pressure difference between the first pressure sensor (5) and the third pressure sensor (17) to switch from filtering sewage by the first filter to filtering sewage by the second filter, and provides filtered pure water to the first nozzle group (15) to clean and decontaminate the first filter cartridge (10) by rotary spraying, comprising: The first electric ball valve (4) and the fifth electric ball valve (21) are opened, and the other electric ball valves are closed, sewage containing impurities is introduced into the water supply pipe (1), and the pressure values ​​at the upper and lower ends of the first filter housing (8) are monitored by the first pressure sensor (5) and the third pressure sensor (17); When the pressure difference between the first pressure sensor (5) and the third pressure sensor (17) is greater than or equal to a preset difference, the first electric ball valve (4) and the fifth electric ball valve (21) are controlled to be closed, the second electric ball valve (3), the sixth electric ball valve (36), the seventh electric ball valve (18), and the third electric ball valve (13) are controlled to be opened, and the first explosion-proof motor (20) is controlled to be turned on, so as to drive the first water supply steel pipe (42) to rotate through the first belt (43), so as to clean and decontaminate the first filter cartridge (10); When the working time of the first explosion-proof motor (20) reaches a preset time, the seventh electric ball valve (18), the third electric ball valve (13), and the first explosion-proof motor (20) are controlled to be closed simultaneously.

3. The water quality filtration system for mine condensation dehumidification and spray dust reduction according to claim 2 is characterized in that: The controller (7) controls each electric ball valve and each explosion-proof motor according to the pressure difference between the second pressure sensor (6) and the fourth pressure sensor (30) to switch from filtering sewage by the second filter to filtering sewage by the first filter, and provides filtered pure water to the second nozzle group (25) to clean and decontaminate the second filter cartridge (24) by rotary spraying, comprising: When the pressure difference between the second pressure sensor (6) and the fourth pressure sensor (30) is greater than or equal to a preset difference, the second electric ball valve (3) and the sixth electric ball valve (36) are controlled to be closed, the first electric ball valve (4), the fifth electric ball valve (21), the eighth electric ball valve (35), and the fourth electric ball valve (29) are controlled to be opened, and the second explosion-proof motor (33) is controlled to be turned on, so as to drive the second water supply steel pipe (44) to rotate through the second belt (31), so as to clean and decontaminate the second filter cartridge (24); When the working time of the second explosion-proof motor (33) reaches a preset time, the eighth electric ball valve (35), the fourth electric ball valve (29), and the second explosion-proof motor (33) are controlled to be closed simultaneously.

4. The water quality filtration system for mine condensation dehumidification and spray dust reduction according to claim 1 is characterized in that: A first fixer (14) is provided above the first water supply steel pipe (42) and a second fixer (16) is provided below the first water supply steel pipe (42) for fixing the first water supply steel pipe (42); a third fixer (22) is provided above the second water supply steel pipe (44) and a fourth fixer (27) is provided below the second water supply steel pipe (44) for fixing the second water supply steel pipe (44).

5. The water quality filtration system for mine condensation dehumidification and spray dust reduction according to claim 1 is characterized in that: The first nozzle group (15) arranges a plurality of nozzles above and below the center of the first water supply steel pipe (42), and the nozzles are rotated 180 degrees to overlap; the second nozzle group (25) arranges a plurality of nozzles above and below the center of the second water supply steel pipe (44), and the nozzles are rotated 180 degrees to overlap.

6. The water quality filtration system for mine condensation dehumidification and spray dust reduction according to claim 5 is characterized in that: The arrangement of the first nozzle group (15) on the first water supply steel pipe (42) is as follows: 5 nozzles are evenly arranged on the upper right half of the first water supply steel pipe (42) at intervals of 8-10 cm, and 5 nozzles are evenly arranged on the lower left half at intervals of 8-10 cm; the arrangement of the second nozzle group (25) on the second water supply steel pipe (44) is as follows: 5 nozzles are evenly arranged on the upper right half of the second water supply steel pipe (44) at intervals of 8-10 cm, and 5 nozzles are evenly arranged on the lower left half at intervals of 8-10 cm.

7. The water quality filtration system for mine condensation dehumidification and spray dust reduction according to claim 1 is characterized in that: The rotation speeds of the first rotary joint (19) and the second rotary joint (34) are adjustable between 30-60 r / min.

8. A control method for a water quality filtration system for mine condensation dehumidification and spray dust reduction as described in claims 1-7, characterized in that: The method comprises: Controlling the first filter to filter sewage, and obtaining a pressure difference between a water inlet and a water outlet of the first filter; When the pressure difference between the water inlet and the water outlet of the first filter is greater than or equal to a preset difference, the second filter is switched to filter the sewage, and the first filter cartridge of the first filter is cleaned and decontaminated within a preset time; Obtaining a pressure difference between a water inlet and a water outlet of the second filter; When the pressure difference between the water inlet and the water outlet of the second filter is greater than or equal to a preset difference, the first filter is switched to filter the sewage, and the second filter cartridge of the second filter is cleaned and decontaminated within a preset time.

9. The control method according to claim 8, characterized in that: Switching the second filter to filter the sewage, and cleaning and decontaminating the first filter cartridge of the first filter within a preset time, comprises: Control the first electric ball valve and the fifth electric ball valve to close, control the second electric ball valve, the sixth electric ball valve, the seventh electric ball valve, and the third electric ball valve to open, and control the first explosion-proof motor to start, so as to drive the first water supply steel pipe to rotate through the first belt, so as to clean and decontaminate the first filter cartridge; When the working time of the first explosion-proof motor reaches a preset time, the seventh electric ball valve, the third electric ball valve and the first explosion-proof motor are controlled to be closed simultaneously.

10. The control method according to claim 8, characterized in that: Switching the first filter to filter sewage, and cleaning and decontaminating the second filter cartridge of the second filter within a preset time, comprises: When the pressure difference between the second pressure sensor and the fourth pressure sensor is greater than or equal to a preset difference, the second electric ball valve and the sixth electric ball valve are controlled to be closed, the first electric ball valve, the fifth electric ball valve, the eighth electric ball valve, and the fourth electric ball valve are controlled to be opened, and the second explosion-proof motor is controlled to be turned on, so as to drive the second water supply steel pipe to rotate through the second belt, so as to clean and decontaminate the second filter cartridge; When the working time of the second explosion-proof motor reaches a preset time, the eighth electric ball valve, the fourth electric ball valve and the second explosion-proof motor are controlled to be closed simultaneously.

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