Interlocking control cleaning water tank for treating high-salinity wastewater in coal chemical industry

Abstract

The invention relates to the technical field of wastewater treatment, and discloses an interlocking control cleaning water tank for high-salinity wastewater treatment in the coal chemical industry, which comprises a sewage treatment tank, a coarse filtration unit mounted at the top of an inner cavity of the sewage treatment tank, a membrane treatment unit mounted in the middle of the inner cavity of the sewage treatment tank, and an output unit mounted at the bottom of the inner cavity of the sewage treatment tank, the upper side of the membrane treatment unit is provided with an offset flushing assembly for flushing internal pores of the membrane treatment unit by using treated purified water, the disinfected purified water is accelerated under the guide action of an inclined guide block and an arc-shaped guide block so as to form high-pressure and high-speed water, and the swastika-shaped rotating part is pushed to rotate when the water is jetted out, so that the membrane treatment unit is driven to rotate by the swastika-shaped rotating part; according to the invention, high-speed and high-pressure water obtains a rotating trend so as to go deep into pores, the high-speed and high-pressure water can more effectively penetrate through the pore structure of the membrane and go deep into the membrane for cleaning, and due to the fact that the pressure and speed of the water are high, the energy attenuation of the water is slow, and an effective cleaning effect can be formed in the tiny pores of the membrane.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and particularly to an interlock control cleaning water tank for treating high-salt wastewater in the coal chemical industry. Background Art

[0002] The interlock control cleaning water tank is a device used for treating high-salt wastewater in the coal chemical industry, which can ensure the stability and efficiency of the cleaning process, effectively remove salts and other pollutants in the wastewater, and improve the wastewater treatment efficiency and water quality.

[0003] However, there are still some problems with the existing interlock control cleaning water tank: First, although the membrane filtration technology can effectively separate salts and pollutants in the treatment of high-salt wastewater, its easy clogging has become a bottleneck. The existing technology uses the water vapor generated in the crystallization evaporation step to drive the brush to rotate and generate bubbles, and uses the mechanical action of the brush and the impact of bubble rupture to clean the membrane surface. However, this method is not applicable to all scenarios, because crystallization evaporation is not an essential step, and the water vapor cannot play a cleaning role. Therefore, the membrane clogging problem still exists. Although the long-term brush cleaning alleviates the clogging, it will cause the membrane to gradually wear, thereby reducing the service life and separation effect; Secondly, the brush and the bubble rupture cannot penetrate deep into the internal pores of the membrane. Because the physical impact generated by the bubble rupture mainly acts on the membrane surface, its energy rapidly decays on the membrane surface and is difficult to penetrate the pore structure of the membrane. In addition, the pores of the membrane are usually very small, with diameters in the nanometer to micrometer range. The shock wave generated by the bubble rupture is difficult to form an effective cleaning effect in these tiny pores. Although the bristles of the brush can touch the membrane surface, their action depth is limited and they cannot penetrate deep into the internal pores of the membrane. The pore structure of the membrane is complex, and it is difficult for the bristles of the brush to enter these tiny pores, resulting in poor cleaning effect. Further, the accumulation of pollutants inside the membrane reduces the permeability and causes secondary pollution, affecting the final water quality.

[0004] Second, after the wastewater passes through the coarse filtration, a coagulant needs to be combined with the wastewater to generate flocs to further remove suspended solids and colloidal particles in the wastewater. In order to accelerate the mixing rate, the existing technology uses a stirring structure to stir it. However, stirring will not only make the sludge deposited inside chaotic again, resulting in an unstable sludge layer and affecting the subsequent solid-liquid separation effect, but also break up the flocs, reducing the flocculation effect, thereby affecting the efficiency and water quality of wastewater treatment. In addition, the sludge continuously accumulates inside, resulting in a smaller mixing space for the supernatant and the flocculant, further exacerbating the problem of uneven mixing. This uneven mixing not only reduces the use efficiency of the flocculant, but also causes uneven generation of flocs, affecting the subsequent precipitation and filtration effects.

[0005] Therefore, the present invention proposes an interlock control cleaning water tank for treating high-salt wastewater in the coal chemical industry. Summary of the invention

[0006] The purpose of the present invention is to provide a chain-controlled cleaning water tank for high-salt wastewater treatment in the coal chemical industry to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a chain-controlled cleaning water tank for treating high-salt wastewater in the coal chemical industry, comprising a sewage treatment tank, a coarse filtration unit is installed at the top of the inner cavity of the sewage treatment tank, a membrane treatment unit is installed in the middle of the inner cavity of the sewage treatment tank, an output unit is installed at the bottom of the inner cavity of the sewage treatment tank, and an offset flushing component is provided on the upper side of the membrane treatment unit for flushing the internal pores of the membrane treatment unit with treated pure water, the offset flushing component comprises a plurality of inclined guide blocks which accelerate and pressurize the pure water through their own guiding action, the plurality of inclined guide blocks are arranged in an interlaced manner, both sides of each of the inclined guide blocks are arranged as inclined planes, and the inclination directions of each inclined plane are arranged in opposite directions, and a swastika rotating part is provided below the plurality of inclined guide blocks which rotates itself to allow the pressurized and accelerated pure water to penetrate into the pores.

[0008] Preferably, the offset flushing assembly also includes two flushing pipes, which are symmetrically fixedly connected to the interior of the sewage treatment tank and located above the membrane treatment unit. The interiors of the flushing pipes are linearly equidistant and staggeredly fixedly connected with a plurality of arc-shaped guide blocks, and a plurality of inclined guide blocks are symmetrically fixedly connected to the inner walls of the flushing pipes. A buffer arc block is fixedly connected to one end of the two flushing pipes that is close to each other and located at the bend of the inner wall, and a nozzle is installed at the end of each flushing pipe close to the membrane treatment unit.

[0009] Preferably, each of the flushing pipes is fixedly connected to a support at one end close to the nozzle, a reciprocating screw is fixedly connected to the bottom of the support, an internally threaded sleeve is threadedly connected to the outer surface of the reciprocating screw, the internal thread of the internally threaded sleeve and the external thread of the reciprocating screw are mutually adapted, the outer surface of the internally threaded sleeve is fixedly connected to the outer surface of the swastika rotating member, and the swastika rotating member penetrates the surface and is provided with a plurality of diversion holes arranged equidistantly in a ring shape.

[0010] Preferably, a convection mixing component for preventing the flocs from being broken is arranged above the membrane treatment unit, and the convection mixing component includes a mixing chamber, which is installed inside the sewage treatment tank and is located between the coarse filtration unit and the membrane treatment unit. A mixing motor is installed on the top of the mixing chamber, and the output shaft of the mixing motor passes through the top of the mixing chamber. A first missing tooth is fixedly connected to the outer surface of the output shaft of the mixing motor, and a second missing tooth is fixedly connected to the outer surface of the output shaft of the mixing motor and located below the first missing tooth.

[0011] Preferably, the convection mixing component further includes a driving disk, which is rotatably connected to the top of the inner cavity of the mixing bin. The driving disk penetrates through the surface and is provided with a plurality of linear grooves arranged at equal intervals in a circular shape. The surface of the driving disk is fixedly connected with a plurality of circular teeth meshing with the first missing teeth. The inside of the driving disk is rotatably connected with a driven disk, and the edge where the driving disk contacts the driven disk is made of nylon material. The driven disk penetrates through the surface and is provided with a plurality of curved grooves arranged at equal intervals in a circular shape. On the side of the driven disk close to the mixing motor, a plurality of straight teeth meshing with the second missing teeth are fixedly connected.

[0012] Preferably, a reset spring is fixedly connected to the outer surface of the driving disk. The side of the reset spring away from the driving disk is fixedly connected to the straight teeth on the surface of the driven disk. A mixing part is slidably connected inside each of the curved grooves and the linear grooves. The mixing part is divided into a straight rod and an arc block. The straight rod is slidably connected inside the curved grooves and the linear grooves. The arc block is fixedly connected to the bottom of the straight rod. A scraping plate is fixedly connected to the side of each arc block close to each other. A plurality of inclined blocks are fixedly connected to the bottom of each scraping plate.

[0013] Preferably, the sides of the upper and lower inclined guide blocks close to the center of the sewage treatment tank are tangent to the outer surfaces of the co-linear arc guide blocks. The sides of the upper and lower inclined guide blocks away from the center of the sewage treatment tank are tangent to the outer surfaces of the arc guide blocks on the opposite side.

[0014] Preferably, fixing seats are symmetrically and fixedly connected to the bottom of the mixing bin. The mixing motor is electrically controlled by an external controller to start and stop. The contact points between each scraping plate and the arc block of the mixing part are all different. The inclined blocks at the bottom of the scraping plate all incline towards the side close to the arc block.

[0015] Preferably, the buffer arc blocks are all made of rubber material, and the flushing pipes are all fixedly connected inside the fixing seats.

[0016] Preferably, a feeding port is opened at the top of the sewage treatment tank. A feeding mechanism is installed inside the coarse filtration unit. A disinfection mechanism is arranged above the output unit. The feeding mechanism and the disinfection mechanism are both electrically controlled by an external controller to start and stop.

[0017] Preferably, the feeding mechanism includes a feeding pipe, a water pump I, a spray head and two transfer pipes.

[0018] Preferably, the disinfection mechanism includes a disinfection chamber, a water quality on-line monitor and a disinfectant dispenser.

[0019] Preferably, the output unit includes a four-way pipe, a solenoid valve, two water pumps II and two groups of water distribution pipes.

[0020] Preferably, the coarse filtration unit includes a coarse filtration bin, a coarse grille, and a funnel.

[0021] Preferably, the membrane treatment unit includes a reverse osmosis membrane and a support hopper.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The disinfected purified water is accelerated under the guiding action of the inclined guiding block and the arc guiding block, thereby forming high-pressure and high-speed water. When the water jets out, it drives the swastika rotating part to rotate, so that the high-pressure and high-speed water obtains a rotating trend, thereby penetrating deep into the pores. First, the high-pressure and high-speed water can more effectively penetrate the pore structure of the membrane and penetrate deep into the membrane for cleaning. Due to the high pressure and speed of the water, its energy attenuation is slow, and it can form an effective cleaning effect in the tiny pores of the membrane. Second, the rotating trend of the water makes the cleaning effect more uniform, which can cover all corners of the membrane, avoiding the problem of limited action depth during brush cleaning. In addition, the impact force of the high-pressure and high-speed water can more thoroughly remove the pollutants inside the membrane, reduce the accumulation of pollutants, and improve the permeability of the membrane; Compared with the prior art, the prior art relies on the water vapor generated by crystallization evaporation and the mechanical action of the brush. This method is not applicable to all scenarios and has limited cleaning effects. The offset flushing assembly cleans by penetrating deep into the pores with high-pressure and high-speed water, which is applicable to various scenarios and has better cleaning effects. Second, the bubble bursting and brush cleaning in the prior art cannot penetrate deep into the pores inside the membrane, resulting in the accumulation of pollutants inside the membrane and reducing the permeability. The offset flushing assembly cleans by penetrating deep into the pores with high-pressure and high-speed water, which can more thoroughly remove the pollutants inside the membrane and reduce the accumulation of pollutants; Among them: the flushing pipes on both sides will periodically flush one side of the reverse osmosis membrane due to the periodic operation of the second water pump. Based on the self-recovery of the reverse osmosis membrane, the periodic flushing with high-pressure and high-speed water will not damage the reverse osmosis membrane and will extend its service life; Among them: when the water flow moves and encounters an obstacle, turbulence will be generated, and the turbulence can more effectively agitate and clean the pollutants inside the pores, improving the cleaning effect; Among them: the swastika rotating part is impacted by the high-speed water flow and rotates. A number of diversion holes opened on its surface can divert the water flow, thereby reducing the speed of part of the water flow to prevent over-flushing; Among them: the swastika rotating part with a planar structure reduces the flow-around phenomenon generated by the water flow on the curved surface structure, thereby can push the water flow to act on the inside of the reverse osmosis membrane and improves the cleaning efficiency. In addition, the planar structure has a simple design, low manufacturing and maintenance costs, and is not prone to mechanical wear; Among them: by contacting the water flow with the reciprocating swastika rotating part, the water flow obtains different rotating trends, and then the water flow can cover the reverse osmosis membrane and flush it; Among them: The design of staggered arrangement of inclined guiding blocks and staggered arrangement of arc guiding blocks enables the water flow to be guided by the inclined guiding blocks and divided into two streams, and the diverted water will continuously converge with the main stream to accelerate, thereby improving the energy utilization efficiency; Among them: The buffer arc block is provided to prevent the high-pressure and high-speed water flow from continuously impacting the flushing pipe and causing damage; Among them: Since both sides of the inclined guiding block are tangent to the arc guiding block respectively, and this design method optimizes the fluid movement path, making the water flow smoother, reducing the resistance of the water flow, and improving the cleaning efficiency.

[0023] 2. The mixing motor drives the driving disk to slowly drive the driven disk and the mixing part to slowly rotate, and the mixing part will continuously reciprocate under the elastic force of the return spring and the meshing relationship between the driven disk and the second toothless part. The design of the overall slow movement avoids the shear force and eddy current generated by the traditional stirring structure, reduces the damage of the flocculant and the chaos of the sludge layer. Secondly, the mixing part can effectively disturb the wastewater and the flocculant during the movement process, so that the flocculant and the wastewater are fully mixed, improving the use efficiency of the flocculant. In addition, the design of slow movement and reciprocating movement reduces the generation of eddy current and turbulence, avoids the instability of the sludge layer, and improves the sedimentation effect; Compared with the prior art, the prior art uses a stirring structure for stirring, which will not only make the sludge deposited inside chaotic again, resulting in the instability of the sludge layer and affecting the subsequent solid-liquid separation effect, but also break the flocculant, reducing the flocculation effect, and thus affecting the efficiency and water quality of wastewater treatment. The convective mixing component avoids the shear force and eddy current generated during the stirring process through the design of slow movement and reciprocating movement, reduces the damage of the flocculant and the chaos of the sludge layer, and improves the flocculation effect and the efficiency of wastewater treatment; Secondly, in the prior art, the sludge continuously accumulates inside, resulting in a smaller mixing space for the supernatant and the flocculant, further exacerbating the problem of uneven mixing. The reciprocating movement design of the mixing part makes the mixing process more uniform, avoids the continuous accumulation and blockage of the sludge, and improves the use efficiency of the flocculant. In addition, the eddy current and turbulence generated during the stirring process in the prior art may roll up the sludge at the bottom, making the sludge layer unstable and affecting the sedimentation effect. The convective mixing component reduces the generation of eddy current and turbulence through the design of slow movement and reciprocating movement, avoiding the instability of the sludge layer; Among them: Under the action of the driving of the mixing motor and its own elastic force, the return spring drives the mixing part to move and reset, causing the wastewater to generate mixed convection, further strengthening the mixing effect. Compared with the traditional stirring method, it improves the use efficiency of the flocculant, reduces the eddy current and turbulence, and avoids the instability of the sludge layer; Among them: the mixing element collides with the bottom of the mixing bin during movement, effectively preventing the sludge from concentrating in the middle, avoiding the reduction of the mixing space between the supernatant and the flocculant, solving the problem of uneven mixing, and improving the efficiency and water quality of wastewater treatment; Among them: since the contact point between each scraper plate and the arc block of the mixing element is different, and the bottom inclined block is inclined toward the side close to the arc block, the scraper plate can take away the sludge between the mixing elements when the mixing elements move, further reducing the sludge aggregation and clogging problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a frontal perspective schematic diagram of the main structure of the present invention; Figure 2 It is a rear perspective schematic diagram of the main structure of the present invention; Figure 3 It is a cross-sectional stereoscopic schematic diagram of the main structure of the present invention; Figure 4 For the present invention Figure 3 A magnified three-dimensional schematic diagram of the structure at center A; Figure 5 For the present invention Figure 3 The enlarged three-dimensional schematic diagram of the structure at B in the middle; Figure 6 It is a cutaway perspective schematic diagram of the offset flushing assembly of the present invention; Figure 7 For the present invention Figure 6 The enlarged three-dimensional schematic diagram of the structure at C in the middle; Figure 8 It is a three-dimensional schematic diagram of the convection mixing assembly of the present invention; Figure 9 It is a three-dimensional schematic diagram of the connection position relationship between the driving disk and the driven disk of the present invention; Figure 10 It is a partial three-dimensional schematic diagram of the convection mixing component of the present invention.

[0025] In the figure: 11. Sewage treatment tank; 12. Coarse filtration unit; 13. Membrane treatment unit; 14. Output unit; 2. Offset flushing assembly; 21. Flushing pipe; 22. Arc guide block; 23. Inclined guide block; 24. Buffer arc block; 25. Support member; 26. Reciprocating screw rod; 27. Internal threaded sleeve; 28. Swastika rotating member; 29. ​​Diverter hole; 3. Convection mixing assembly; 31. Mixing chamber; 32. Mixing motor; 33. First missing tooth; 34. Second missing tooth; 35. Active disk; 36. Straight groove; 37. Driven disk; 38. Curved groove; 39. Return spring; 310. Mixing element; 311. Scraper plate. DETAILED DESCRIPTION

[0026] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 10 The present invention provides an embodiment: a chain-controlled cleaning water tank for high-salt wastewater treatment in the coal chemical industry, comprising a sewage treatment tank 11, a coarse filtration unit 12 is installed on the top of the inner cavity of the sewage treatment tank 11, a membrane treatment unit 13 is installed in the middle of the inner cavity of the sewage treatment tank 11, and an output unit 14 is installed at the bottom of the inner cavity of the sewage treatment tank 11. The upper side of the membrane treatment unit 13 is provided with an offset flushing component 2 for flushing the internal pores of the membrane treatment unit 13 with treated pure water. The offset flushing component 2 includes a plurality of inclined guide blocks 23 that accelerate and pressurize the pure water through its own guiding effect. The plurality of inclined guide blocks 23 are staggered with each other, and both sides of each inclined guide block 23 are arranged as inclined planes, and the inclination directions of each inclined plane are arranged in opposite directions. A swastika rotating member 28 is provided below the plurality of inclined guide blocks 23, which allows the pressurized and accelerated pure water to penetrate into the pores through its own rotation.

[0028] The offset flushing assembly 2 also includes two flushing pipes 21, which are symmetrically fixedly connected to the interior of the sewage treatment tank 11 and located above the membrane treatment unit 13. The interior of the flushing pipes 21 is linearly equidistant and staggeredly arranged with a plurality of arc-shaped guide blocks 22 fixedly connected thereto, and a plurality of inclined guide blocks 23 are symmetrically fixedly connected to the inner wall of the flushing pipes 21. A buffer arc block 24 is fixedly connected to one end of the two flushing pipes 21 that is close to each other and located at the bend of the inner wall, and a nozzle is installed at the end of each flushing pipe 21 close to the membrane treatment unit 13.

[0029] One end of each flushing pipe 21 close to the nozzle is fixedly connected to a support member 25, and a reciprocating screw 26 is fixedly connected to the bottom of the support member 25. An internal threaded sleeve 27 is threadedly connected to the outer surface of the reciprocating screw 26. The internal thread of the internal threaded sleeve 27 is compatible with the external thread of the reciprocating screw 26. The outer surface of the internal threaded sleeve 27 is fixedly connected to the outer surface of the swastika rotating member 28. The swastika rotating member 28 penetrates the surface and is arranged in a circular shape with a plurality of diversion holes 29 at equal intervals.

[0030] Above the membrane treatment unit 13, a convection mixing component 3 for preventing the breaking of flocs is provided. The convection mixing component 3 includes a mixing bin 31. The mixing bin 31 is installed inside the sewage treatment tank 11 and is located between the coarse filtration unit 12 and the membrane treatment unit 13. A mixing motor 32 is installed on the top of the mixing bin 31. The output shaft of the mixing motor 32 penetrates the top of the mixing bin 31. A first missing tooth 33 is fixedly connected to the outer surface of the output shaft of the mixing motor 32. A second missing tooth 34 is fixedly connected to the outer surface of the output shaft of the mixing motor 32 and is located below the first missing tooth 33.

[0031] The convection mixing component 3 further includes a driving disk 35. The driving disk 35 is rotatably connected to the top of the inner cavity of the mixing bin 31. A plurality of linear grooves 36 are arranged in a circular and equidistant manner on the surface of the driving disk 35. A plurality of circular teeth meshing with the first missing tooth 33 are fixedly connected to the surface of the driving disk 35. A driven disk 37 is rotatably connected inside the driving disk 35, and the edge where the driving disk 35 contacts the driven disk 37 is made of nylon material. A plurality of curved grooves 38 are arranged in a circular and equidistant manner on the surface of the driven disk 37. A plurality of straight teeth meshing with the second missing tooth 34 are fixedly connected to the side of the driven disk 37 close to the mixing motor 32.

[0032] A return spring 39 is fixedly connected to the outer surface of the driving disk 35. The side of the return spring 39 away from the driving disk 35 is fixedly connected to the straight teeth on the surface of the driven disk 37. A mixing member 310 is slidably connected inside each of the curved grooves 38 and the linear grooves 36. The mixing member 310 is divided into a straight rod and an arc block. The straight rod is slidably connected inside the curved grooves 38 and the linear grooves 36. The arc block is fixedly connected to the bottom of the straight rod. A scraping plate 311 is fixedly connected to the side of each arc block close to each other. A plurality of inclined blocks are fixedly connected to the bottom of each scraping plate 311.

[0033] The inclined guide blocks 23 located above and below are tangent to the outer surface of the arc-shaped guide block 22 collinear with them on the side close to the center of the sewage treatment tank 11. The inclined guide blocks 23 located above and below are tangent to the outer surface of the arc-shaped guide block 22 on the opposite side on the side away from the center of the sewage treatment tank 11.

[0034] Fixed seats are symmetrically fixedly connected to the bottom of the mixing bin 31. The mixing motor 32 is electrically controlled by an external controller to start and stop. The contact points of each scraping plate 311 and the arc block of the mixing member 310 are all different. The inclined blocks at the bottom of the scraping plates 311 all incline towards the side close to the arc block.

[0035] The buffer arc blocks 24 are all made of rubber material. The flushing pipes 21 are all fixedly connected inside the fixed seats.

[0036] The top of the sewage treatment tank 11 is provided with a feeding port. A feeding mechanism is installed inside the coarse filtration unit 12, and a disinfection mechanism is arranged above the output unit 14. The feeding mechanism and the disinfection mechanism are both electrically controlled by an external controller to start and stop.

[0037] The feeding mechanism includes a feeding pipe, a first water pump, a spray head, and two transfer pipes. The two transfer pipes are respectively a first transfer pipe and a second transfer pipe. The feeding pipe penetrates through the top of the sewage treatment tank 11, and the bottom of the feeding pipe is fixedly communicated with the inside of the mixing chamber 31. The first water pump is installed on the side wall of the sewage treatment tank 11. The first transfer pipe is fixedly communicated with the input end of the first water pump, the second transfer pipe is fixedly communicated with the output end of the first water pump, and the end of the second transfer pipe away from the first water pump is fixedly connected to the bottom of the mixing chamber 31. The spray head is installed at the end of the second transfer pipe away from the first water pump.

[0038] The disinfection mechanism includes a disinfection chamber, a water quality on-line monitor, and a disinfectant dispenser. The disinfection chamber is installed inside the sewage treatment tank 11 and is located below the membrane treatment unit 13. The water quality on-line monitor is installed on the inner wall of the disinfection chamber, and the disinfectant dispenser is installed on the inner wall of the sewage treatment tank 11. Its input end penetrates through the outer wall of the sewage treatment tank 11, and the output end is located inside the disinfection chamber.

[0039] The output unit 14 includes a four-way pipe, a solenoid valve, two second water pumps, and two groups of water distribution pipes. The four-way pipe is installed at the bottom of the disinfection chamber, the solenoid valve is installed inside the four-way pipe, the two second water pumps are symmetrically installed on the outer wall of the sewage treatment tank 11. The water distribution pipes are divided into a first water distribution pipe and a second water distribution pipe. The first water distribution pipe is fixedly communicated between the four-way pipe and the input end of the second water pump, and the second water distribution pipe is fixedly communicated between the output end of the second water pump and the flushing pipe 21. The two solenoid valves are programmed to control the alternating working states of the two second water pumps, that is, one of the second water pumps is in the working state, while the other water pump remains in the non-working state.

[0040] The coarse filtration unit 12 includes a coarse filtration chamber, a coarse grille, and a funnel. The coarse filtration chamber is installed at the top of the inner cavity of the sewage treatment tank 11, the coarse grille is installed on the top of the coarse filtration chamber, the funnel is installed inside the coarse filtration chamber, and the top of the funnel completely covers the coarse grille. The bottom of the funnel is communicated with the mixing chamber 31.

[0041] The membrane treatment unit 13 includes a reverse osmosis membrane and a support hopper. The support hopper is fixedly connected to the inner wall of the sewage treatment tank 11, the reverse osmosis membrane is installed on the top of the support hopper, and the bottom of the support hopper is communicated with the disinfection chamber.

[0042] The bottom of the four-way pipe can be externally connected to a recovery pipe for reusing or discharging the purified water.

[0043] The working principle of the present invention in combination with the above embodiments is as follows: The following is the initial state: the internal threaded sleeves 27 are all located in the middle of the reciprocating screw 26, the swastika rotating member 28 is in a tilted state at this time, the mixing members 310 are all located on the side of the curved groove 38 and the straight groove 36 close to the center of the active disk 35, the return spring 39 is not in a stretched state, and the scraper plates 311 are in conflict with each other.

[0044] The following are the specific steps of the work: Among them, the treatment of high-salt wastewater: like Figures 1 to 3 As shown, the operator can use an external pipe to introduce the wastewater into the coarse filtration unit 12 through the feeding port on the top of the sewage treatment tank 11. At this time, the wastewater is initially filtered through the coarse screen and funnel, and enters the delivery mechanism after removing large particles of impurities.

[0045] At this time, the operator puts the flocculant into the delivery pipe, and after the flocculant enters the mixing chamber 31, it will react with the sewage and form supernatant, floccules and precipitated sludge. The operator then starts the water pump 1 and the disinfection mechanism through the external controller. The supernatant flows into the bottom through the water pump 1 and is deeply filtered through the membrane treatment unit 13 to filter out fine impurities and salt. The filtered water enters the disinfection chamber, and after disinfection and water quality monitoring, it is finally discharged through the output unit 14. Among them, flushing of reverse osmosis membrane: like Figures 3 to 7 as well as Figure 10 As shown, in the process of treating high-salt wastewater by the reverse osmosis membrane, since the wastewater contains a large amount of impurities such as salt, organic matter, microorganisms and metal ions, these impurities will accumulate on the membrane surface and in the membrane pores when passing through the reverse osmosis membrane, causing the pores of the membrane to be blocked, thereby reducing the water permeability and desalination efficiency of the membrane. In order to solve the problem of reverse osmosis membrane blockage, the operator can electrically control the start of water pump 2 through an external controller, and open the solenoid valve to start flushing the reverse osmosis membrane. At this time, the solenoid valve in the four-way pipe at the bottom of the disinfection chamber is opened, and a part of the pure water that has been disinfected is extracted by water pump 2 and transported to the flushing pipe 21 through water distribution pipe 1.

[0046] After the pure water enters the flushing pipe 21, it first contacts the inclined guide block 23. Since the inclined guide block 23 has inclined surfaces on both sides, the water flow will be divided into two streams when it contacts the inclined guide block 23. The water flow at the top of the inclined guide block 23 will flow toward the top of the next arc guide block 22 under the guidance of the top and side inclined walls of the inclined guide block 23 and the arc guide block 22 colinear with it. The water diverted by the first inclined guide block 23 will be diverted again when it encounters the next inclined guide block 23.

[0047] Similarly, the water flow above is mixed with the water that was diverted for the first time and accelerated. Since the water flows in the same direction and the pure water is continuously diverted, the speed of the pure water is ultimately greatly improved.

[0048] After the pure water hits the buffer arc block 24, it is guided to the bottom of the flushing pipe 21 and sprayed out from the nozzle. The sprayed high-speed and high-pressure water will collide with the swastika rotating part 28. Since the swastika rotating part 28 is swastika-shaped, the impact force of the water flow generates a tangential force, causing the swastika rotating part 28 to start rotating, and then the rotation of the swastika rotating part 28 drives the internal threaded sleeve 27 to rotate.

[0049] Because the internal threaded sleeve 27 is threadedly connected to the reciprocating screw 26, and the threads are adapted to each other, the threaded connection allows the internal threaded sleeve 27 to move axially along the reciprocating screw 26 while rotating, and the threaded design of the reciprocating screw 26 allows the internal threaded sleeve 27 to move axially back and forth while rotating. Eventually, when the water flow encounters the swastika rotating part 28 during movement, turbulence will be generated, and the turbulence can more effectively stir and clean the pollutants inside the pores, thereby improving the cleaning effect. At the same time, the turbulence can transfer the energy of the water flow to deeper pores, making the cleaning more thorough.

[0050] In addition, the swastika rotating member 28 will reciprocate while rotating, which allows the water flow to obtain different rotation trends. This rotation trend helps the water flow to penetrate into the pores. When the swastika rotating member 28 moves, the water flow is in dynamic contact with its contact point, and then the water flow obtains different rotation trends at different positions, further enhancing the coverage range and cleaning effect of the water flow. Since the swastika rotating member 28 is a planar structure, the planar structure reduces the circumference phenomenon of the water flow on the curved surface structure, making the water flow smoother and improving the cleaning efficiency. Secondly, the design of the planar structure makes it easier for the water flow to penetrate into the pores, and the cleaning effect is better. Finally, the design of the planar structure is simple, the manufacturing and maintenance costs are low, and it is not easy to produce mechanical wear.

[0051] In the above process, part of the water flows through the diversion hole 29 and acts on the surface of the reverse osmosis membrane. The diversion effect makes the water flow more evenly distributed on the surface of the reverse osmosis membrane, thereby improving the cleaning effect.

[0052] Since the two water pumps are in alternating working state through programming control, when one of the water pumps stops working, the other water pump starts working and flushes the other side of the reverse osmosis membrane. Since the reverse osmosis membrane itself has restorative properties, the periodic flushing will not cause high-speed and high-pressure water to damage the reverse osmosis membrane.

[0053] Among them, prevent the flocs from being broken: like Figure 3 and Figure 4 as well as Figure 8 and Figure 9As shown, during the above process, flocculants will generate flocs and sludge after being mixed with sewage. The formation of these flocs and sludge helps to remove suspended solids and colloidal substances in the wastewater. However, with the generation of sludge, the mixing space of sewage and flocculants will gradually become smaller, and there will also be sewage in the sludge that has not been fully mixed with the flocculants.

[0054] To prevent the flocs from being broken during the treatment process, the operator electrically controls the start of the mixing motor 32 through an external controller to achieve effective protection of the flocs and uniform mixing of the sludge.

[0055] Specifically, the output shaft of the mixing motor 32 will drive the first missing tooth 33 and the second missing tooth 34 on it to rotate. The rotation of the first missing tooth 33 will drive the driving disc 35 meshing with it. Since the number of teeth of the first missing tooth 33 is small, the driving disc 35 will rotate slowly. This slow rotation helps to avoid excessive shear force on the flocs, thus preventing the flocs from being broken. The contact part between the driving disc 35 and the driven disc 37 is made of rubber material, so the friction between the two is large, that is, the rotation of the driving disc 35 will drive the driven disc 37 to rotate synchronously. At this time, the driving disc 35, the driven disc 37 and the mixing member 310 move synchronously, and at the same time, the driving disc 35 drives the mixing member 310 to rotate slowly. At the same time, since the mixing member 310 can fit the bottom of the mixing chamber 31, the slow rotation helps to evenly distribute the sludge and avoid too high local concentration, thus preventing the flocs from being broken.

[0056] At the same time, the second missing tooth 34 will drive the driven disc 37 meshing with it to rotate. The rotation of the driven disc 37 will cause the mixing member 310 inside the straight groove 36 and the curved groove 38 to move away from the center of the driving disc 35, and then the mixing member 310 expands at this time. This expansion helps to increase the mixing space, promote the uniform distribution of the sludge, and prevent the flocs from being under excessive pressure in a local area. Since the second missing tooth 34 is an incomplete gear, as the second missing tooth 34 rotates, the second missing tooth 34 will no longer mesh with the driven disc 37. Under the elastic contraction force of the return spring 39 itself, the return spring 39 pulls the driven disc 37 to reset, and then drives the mixing member 310 to reset. This reset mechanism helps to maintain the stability of the mixing space and prevent the flocs from being impacted too much during the mixing process.

[0057] In addition, scraping plates 311 are arranged on the surface of the mixing member 310. The contact points of each scraping plate 311 with the arc blocks of the mixing member 310 are all different. The inclined blocks at the bottom of the scraping plates 311 all incline towards the side close to the arc blocks. Therefore, the scraping plates 311 help to take away the sludge in the center, avoid excessive accumulation of sludge in the central area, and provide a certain space for the mixing of sewage and flocculants.

[0058] When the sludge inside the mixing bin 31 is relatively full, since the sludge has been resisted by the mixing member 310 to the surroundings, the operator can open the sewage treatment tank 11 and collect and process the sludge inside the mixing bin 31.

[0059] Through the coordinated work of the mixing motor 32, the first missing tooth 33, the second missing tooth 34, the driving disk 35, the driven disk 37, the mixing member 310 and the scraping plate 311, the convection mixing assembly 3 can effectively prevent the flocs from being broken during the treatment process, and at the same time promote the uniform mixing of the sludge. The slow rotation of the first missing tooth 33 and the slow rotation of the mixing member 310 help to maintain the integrity of the flocs and avoid excessive shear force. The expansion and reset mechanism of the mixing member 310 helps to increase the mixing space and promote the uniform distribution of the sludge. At the same time, the design of the scraping plate 311 helps to take away the sludge in the center and avoid excessive accumulation of the sludge in the central area, thereby improving the mixing effect. Finally, the incomplete gear design of the second missing tooth 34 and the elastic contraction mechanism of the reset spring 39 help to maintain the stability of the mixing space and prevent the flocs from being impacted too much during the mixing process.

[0060] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chain-controlled cleaning water tank for high-salt wastewater treatment in the coal chemical industry, comprising a sewage treatment tank (11), a coarse filtration unit (12) being installed at the top of the inner cavity of the sewage treatment tank (11), a membrane treatment unit (13) being installed at the middle of the inner cavity of the sewage treatment tank (11), and an output unit (14) being installed at the bottom of the inner cavity of the sewage treatment tank (11), characterized in that: The upper side of the membrane treatment unit (13) is provided with an offset flushing assembly (2) for flushing the internal pores of the membrane treatment unit (13) with treated pure water. The offset flushing assembly (2) comprises a plurality of inclined guide blocks (23) which accelerate and pressurize the pure water through their own guiding action. The plurality of inclined guide blocks (23) are arranged in an interlaced manner. Both sides of each inclined guide block (23) are provided with inclined surfaces, and the inclination directions of each inclined surface are arranged in opposite directions. A swastika rotating member (28) is provided below the plurality of inclined guide blocks (23) so that the pressurized and accelerated pure water can penetrate into the pores through its own rotation.

2. The interlocking control cleaning water tank for high-salt wastewater treatment in the coal chemical industry according to claim 1 is characterized by: The offset flushing assembly (2) further comprises two flushing pipes (21), the two flushing pipes (21) being symmetrically fixedly connected to the interior of the sewage treatment tank (11) and being located above the membrane treatment unit (13), the interior of the flushing pipes (21) being linearly equidistant and staggeredly arranged and fixedly connected with a plurality of arc-shaped guide blocks (22), the plurality of inclined guide blocks (23) being symmetrically fixedly connected to the inner wall of the flushing pipes (21), a buffer arc block (24) being fixedly connected to the ends of the two flushing pipes (21) close to each other and located at the bend of the inner wall, and a nozzle being installed at the end of each flushing pipe (21) close to the membrane treatment unit (13).

3. The interlocking control cleaning water tank for high-salt wastewater treatment in the coal chemical industry according to claim 2 is characterized by: Each flushing pipe (21) is fixedly connected to a support member (25) at one end close to the nozzle, and a reciprocating screw (26) is fixedly connected to the bottom of the support member (25). The outer surface of the reciprocating screw (26) is threadedly connected to an internal threaded sleeve (27), and the internal thread of the internal threaded sleeve (27) is mutually compatible with the external thread of the reciprocating screw (26). The outer surface of the internal threaded sleeve (27) is fixedly connected to the outer surface of a swastika rotating member (28), and the swastika rotating member (28) is penetrated through the surface and is arranged in a circular shape with equal intervals to form a plurality of diversion holes (29).

4. The interlocking control cleaning water tank for high-salt wastewater treatment in the coal chemical industry according to claim 1 is characterized by: A convection mixing assembly (3) for preventing floccules from being broken is arranged above the membrane treatment unit (13). The convection mixing assembly (3) comprises a mixing chamber (31). The mixing chamber (31) is installed inside the sewage treatment tank (11) and is located between the coarse filtration unit (12) and the membrane treatment unit (13). A mixing motor (32) is installed on the top of the mixing chamber (31). The output shaft of the mixing motor (32) passes through the top of the mixing chamber (31). A first missing tooth (33) is fixedly connected to the outer surface of the output shaft of the mixing motor (32). A second missing tooth (34) is fixedly connected to the outer surface of the output shaft of the mixing motor (32) and is located below the first missing tooth (33).

5. The interlocking control cleaning water tank for high-salt wastewater treatment in the coal chemical industry according to claim 4 is characterized by: The convection mixing assembly (3) further comprises an active disk (35), the active disk (35) being rotatably connected to the top of the inner cavity of the mixing chamber (31), the active disk (35) having a plurality of straight grooves (36) extending through the surface and arranged in an annular manner with equal spacing, the active disk (35) having a plurality of round teeth fixedly connected to the surface of the active disk (35) and meshing with the first missing teeth (33), the active disk (35) having a driven disk (37) rotatably connected inside, the edge of the active disk (35) contacting the driven disk (37) being made of nylon, the driven disk (37) having a plurality of curved grooves (38) extending through the surface and arranged in an annular manner with equal spacing, and a plurality of straight teeth fixedly connected to the side of the driven disk (37) close to the mixing motor (32) and meshing with the second missing teeth (34).

6. The interlocking control cleaning water tank for high-salt wastewater treatment in the coal chemical industry according to claim 5, characterized in that: A return spring (39) is fixedly connected to the outer surface of the active disk (35); the side of the return spring (39) away from the active disk (35) is fixedly connected to the straight teeth on the surface of the driven disk (37); a mixing piece (310) is slidably connected inside each of the curved grooves (38) and the linear grooves (36); the mixing piece (310) is divided into a straight rod and an arc block; the straight rod is slidably connected inside the curved grooves (38) and the linear grooves (36); the arc block is fixedly connected to the bottom of the straight rod; a scraping plate (311) is fixedly connected to the side of each of the arc blocks close to each other; and a plurality of inclined blocks are fixedly connected to the bottom of the scraping plate (311).

7. The interlocking control cleaning water tank for high-salt wastewater treatment in the coal chemical industry according to claim 1 is characterized by: The sides of the upper and lower inclined guide blocks (23) close to the center of the sewage treatment tank (11) are tangent to the outer surface of the arc-shaped guide block (22) that is colinear with them, and the sides of the upper and lower inclined guide blocks (23) away from the center of the sewage treatment tank (11) are tangent to the outer surface of the arc-shaped guide block (22) on the opposite side.

8. The interlocking control cleaning water tank for high-salt wastewater treatment in the coal chemical industry according to claim 6 is characterized by: A fixing seat is symmetrically fixedly connected to the bottom of the mixing bin (31); the mixing motor (32) is electrically controlled to start and stop by an external controller; the contact point between each scraper plate (311) and the arc block of the mixing element (310) is different; and the inclined blocks at the bottom of the scraper plates (311) are inclined toward a side close to the arc block.

9. The interlocking control cleaning water tank for high-salt wastewater treatment in the coal chemical industry according to claim 2, characterized in that: The buffer arc blocks (24) are all made of rubber material, and the flushing pipes (21) are all fixedly connected to the inside of the fixing seat.

10. The interlocking controlled cleaning water tank for high-salt wastewater treatment in the coal chemical industry according to claim 1, characterized in that: The top of the sewage treatment box (11) is provided with a loading port, a delivery mechanism is installed inside the coarse filtering unit (12), and a disinfection mechanism is arranged above the output unit (14), and both the delivery mechanism and the disinfection mechanism are electrically controlled to start and stop by an external controller.

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