A landfill leachate treatment device

Abstract

The present invention belongs to the technical field of leachate filtration, and in particular, relates to a landfill leachate treatment device, including a filter pool and an inlet pipe and an outlet pipe respectively arranged on the left and right sides of the filter pool, wherein the right side wall of the filter pool is fixedly connected with a PLC controller, and further comprising: a lifting assembly arranged on the front and rear sides of the filter pool. The present invention can intercept impurity particles of different sizes in sequence, thereby achieving a finer filtering effect and improving the effluent water quality, and the multi-layer filter screen plates share the filtering load, reducing the wear and clogging degree of each layer of the filter screen plates, thereby extending the service life of the entire filtering device, reducing the replacement frequency and cost, and when a filter screen plate has a larger filter screen aperture and a reduced filtering accuracy due to long-term use and wear, the worn filter screen plate can be automatically replaced when the processing device is idle, thereby ensuring the filtering performance of the filter screen plate.

Description

Technical Field

[0001] The invention belongs to the technical field of leachate filtration, and in particular relates to a landfill leachate treatment device. Background Art

[0002] Leachate is a high-concentration organic wastewater produced during the landfill or stacking process of garbage due to compaction, fermentation and precipitation. The leachate contains a variety of pollutants such as organic matter, inorganic salts and heavy metals. If it is discharged directly without proper treatment, it will cause serious pollution to soil and groundwater resources.

[0003] When the leachate is being treated, the impurities in the leachate need to be filtered. For example, a garbage leachate pretreatment device for a garbage compression station proposed in patent publication number CN118079493B can filter the leachate and automatically clean the filter screen to reduce manpower work.

[0004] In order to achieve a finer filtering effect and enhance filtering stability, existing leachate treatment devices usually set up multiple layers of filter screens inside the treatment equipment, and the apertures of different layers of filter screens gradually decrease, which can intercept impurity particles of different sizes in turn, so as to achieve a better filtering effect and improve the water quality of the effluent. However, after long-term use, the filter screen will have two conditions: first, with the passage of time, impurities continue to accumulate in the pores of the filter screen, causing the mesh holes to be gradually blocked; second, long-term use and wear cause the pore size of the filter screen to become larger, thereby reducing its filtering accuracy, causing impurities that should have been intercepted to pass through the filter screen, affecting the treatment effect. In addition, due to the large number of filter screens, it is difficult for operators to learn about the use of the filter screens and handle them in the first time, which will adversely affect the filtering effect of the leachate treatment device.

[0005] Therefore, a landfill leachate treatment device is proposed to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a landfill leachate treatment device in view of the above problems.

[0007] To achieve the above object, the present invention adopts the following technical scheme: a landfill leachate treatment device, comprising a filter tank and an inlet pipe and an outlet pipe respectively arranged on the left and right sides of the filter tank, wherein the right side wall of the filter tank is fixedly connected with a PLC controller, and further comprising:

[0008] A lifting assembly is arranged on the front and rear sides of the filter tank, and a plurality of filter screens are fixed by the induction assembly, and the apertures of the plurality of filter screens gradually decrease from left to right. The lifting assembly includes two placement plates and a plurality of hydraulic cylinders, the two placement plates are respectively fixedly connected to the front and rear outer walls of the filter tank, the plurality of hydraulic cylinders are evenly distributed on the upper side walls of the two placement plates, the moving ends of the plurality of hydraulic cylinders are all fixedly connected to the lifting plates, and the side walls on the opposite side of the plurality of lifting plates are rotatably connected to the rotating rods;

[0009] An analysis component is arranged on the front side wall of the filter tank, and is used to analyze the changes of the filter screen plate. The analysis component includes an analysis box and a horizontal plate. The analysis box is fixedly connected to the front side wall of the filter tank, and the horizontal plate is fixedly connected to the inner wall of the analysis box. The side wall of the horizontal plate is provided with four plug holes, and the plug holes are plugged with plug rods, and the lower end of the plug rod is fixedly connected to the first permanent magnet block;

[0010] A flushing assembly is arranged on the rear side wall of the filter tank and is used to clean a clogged filter screen. The flushing assembly includes a flushing box and a high-pressure pump. The flushing box and the high-pressure pump are both fixedly connected to the rear side wall of the filter tank. The water inlet end of the high-pressure pump is located in an external water source, and the water outlet end of the high-pressure pump is connected to the flushing box. The inner wall of the filter tank is fixedly connected with four water outlet boxes located on the right side of the filter screen.

[0011] Preferably, the lifting assembly also includes a reduction motor located on the front wall of the lifting plate on the front side, the output end of the reduction motor is fixedly connected to the front end of the front rotating rod, and the two rotating rods located in the same longitudinal direction are fixedly connected to the same square rod at one opposite end, and the rod wall of the square rod is fixedly connected to an indicator light, the number of the square rods is four, and the upper and lower rod walls of the four square rods are connected to the filter screen plate through the sensing assembly, and the filter screen plate located on the lower side is inserted into the filter pool and fits tightly to the inner wall of the filter pool.

[0012] Preferably, the sensing component includes a sensing box and a sliding block, the sensing box is fixedly connected to the rod wall of the square rod, the sliding block is slidably arranged in the sensing box by a spring, the side wall of the sliding block is fixedly connected to a guide plate, the end of the guide plate away from the sliding block extends out of the sensing box and is fixedly connected to a connecting plate, the connecting plate is fixedly connected to the filter screen plate by bolts, the right inner wall of the sensing box is fixedly connected to a trigger switch by an elastic rod, the trigger switch is electrically connected to the flushing component through a PLC controller, the side wall of the sliding block away from the guide plate is inlaid with a conductive block, the inner wall of the sensing box away from the guide plate is inlaid with a resistor plate, the conductive block is in contact with the resistor plate in an initial state, and the right end of the resistor plate is electrically connected to the analysis component through a positioning component.

[0013] Preferably, the analysis component also includes four first electromagnetic blocks fixedly connected to the lower inner wall of the analysis box, the right end of the resistor plate is electrically connected to the corresponding first electromagnetic block through the positioning component, the upper ends of the four plug rods are fixedly connected to a conductive plate, the same spring is fixedly connected between the conductive plate and the cross plate, two adjacent conductive plates are in contact with each other, the lower side walls of the two conductive plates on the left and right sides are fixedly connected to a conductive frame, the left and right inner walls of the analysis box are inlaid with conductive seats, the conductive seat on the left is electrically connected to an external power supply, the upper side wall of the analysis box is fixedly connected to a control box, the inner wall of the control box is fixedly connected to a vertical circle, the vertical A horizontal pin is inserted in the circle, and a circular plate is fixedly connected to the left end of the horizontal pin. The same spring is fixedly connected between the circular plate and the vertical circle, and a second permanent magnet block is fixedly connected to the left side wall of the circular plate. The left inner wall of the control box is fixedly connected to the second electromagnetic block, and the conductive seat on the right side is connected to the circuit of the second electromagnetic block. A push switch is fixedly connected to the right inner wall of the control box, and a metal plate is fixedly connected to the upper inner wall of the analysis box through a spring, and the metal plate is electrically connected to an external power supply through a push switch. An insulating layer is fixedly connected to the upper side wall of the conductive plate, and a metal seat is fixedly connected to the upper side wall of the insulating layer, and the metal seat is electrically connected to a PLC controller.

[0014] Preferably, the positioning assembly includes a bending plate and a micro electric push rod, the bending plate is fixedly connected to the lower side wall of the rear lifting plate, the fixed end of the micro electric push rod is fixedly connected to the upper side wall of the bent plate, the rear end of the rotating rod located on the rear side extends out of the lifting plate and is fixedly connected to two positioning cylinders, the port of the positioning cylinder is connected to a guide bucket, the moving end of the micro electric push rod is fixedly connected to a positioning pin that matches the positioning cylinder, one end of the positioning pin located in the positioning cylinder is fixedly connected to an electric contact block, the electric contact block is electrically connected to the right end of the corresponding resistor plate, the inner wall of the positioning cylinder is fixedly connected to an electric contact seat, and the electric contact seat is electrically connected to the corresponding first electromagnetic block.

[0015] Preferably, the flushing assembly further comprises a delivery pipe fixedly connected between the water outlet box and the flushing box, and a control valve is provided in the delivery pipe, and a water outlet is provided on the side wall of the water outlet box close to the filter screen plate.

[0016] Preferably, the upper side wall of the placement plate located on the front side is fixedly connected to a control electric push rod, the output end of the control electric push rod is fixedly connected to a fixing frame, the rear end of the fixing frame is located in the filter tank and is fixedly connected to a collection cover.

[0017] Preferably, the rear side wall of the induction box is fixedly connected to the limiting cylinder, and the front inner wall of the limiting cylinder is fixedly connected to the limiting electric push rod, the output end of the limiting electric push rod is fixedly connected to a conical block, and the rear side wall of the sliding block is provided with a conical groove that matches the conical block.

[0018] Compared with the existing technology, the advantages of a landfill leachate treatment device are:

[0019] By means of the setting of the limit cylinder, the limit electric push rod, the conical block and the conical groove, the position of the filter screen plate can be fixed before the filter screen plate is installed in the leachate treatment device. During the installation of the filter screen plate, the filter screen plate can be accurately placed at the set position so that the filter screen plate and the inner wall of the treatment device fit closely to ensure the filtering performance.

[0020] By setting up the lifting component, sensing component and analysis component, when a filter plate has a larger aperture and reduced filtering accuracy due to long-term use and wear, the worn filter plate can be automatically replaced when the processing device is idle, thereby ensuring the filtering performance of the filter plate.

[0021] By setting up the lifting assembly, sensing assembly and flushing assembly, when the filter screen is used for a long time and too many impurities accumulate in the pores of the filter screen, causing the permeability of the filter screen to be reduced, the impurities in the pores of the filter screen can be automatically flushed when the processing device is idle, so that the impurities are separated from the pores, thereby ensuring the permeability of the filter screen, and no manual cleaning is required, reducing the workload of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a landfill leachate treatment device provided by the present invention;

[0023] Figure 2 It is a structural schematic diagram of a sensing component in a landfill leachate treatment device provided by the present invention;

[0024] Figure 3 The invention provides a landfill leachate treatment device. Figure 1 Right view of;

[0025] Figure 4 It is a structural schematic diagram of a positioning component in a landfill leachate treatment device provided by the present invention;

[0026] Figure 5 It is a structural schematic diagram of a landfill leachate treatment device provided by the present invention when an analysis component is not working;

[0027] Figure 6 It is a structural schematic diagram of an analysis component in a landfill leachate treatment device provided by the present invention when it is working;

[0028] Figure 7It is a schematic diagram of the positional relationship between the induction box and the limiting cylinder in a landfill leachate treatment device provided by the present invention;

[0029] Figure 8 The present invention provides a schematic diagram of the positional relationship between a flushing box and a plurality of conveying pipes in a landfill leachate treatment device.

[0030] In the figure: 1 filter tank, 2 water inlet pipe, 3 water outlet pipe, 4 PLC controller, 5 filter screen plate, 6 lifting assembly, 61 placement plate, 62 hydraulic cylinder, 7 lifting plate, 8 rotating rod, 9 reduction motor, 10 square rod, 11 induction assembly, 111 induction box, 112 sliding block, 12 guide plate, 13 connecting plate, 14 trigger switch, 15 conductive block, 16 resistance plate, 17 analysis assembly, 171 analysis box, 172 horizontal plate, 18 plug rod, 19 first permanent magnet block, 20 first electromagnetic block, 21 conduction plate, 22 conduction frame, 23 conduction seat, 24 control box, 25 vertical circle, 26 horizontal pin, 27 circular plate, 28 second permanent magnet block, 29 second electromagnetic block, 30 push switch, 31 metal plate, 32 insulating layer, 33 metal seat, 34 positioning assembly, 341 bent plate, 342 micro electric push rod, 35 positioning cylinder, 36 guide bucket, 37 positioning pin, 38 electric contact block, 39 electric contact seat, 40 flushing assembly, 401 flushing box, 402 high pressure pump, 41 water outlet box, 42 delivery pipe, 43 control valve, 44 water outlet, 45 control electric push rod, 46 fixing frame, 47 collecting cover, 48 limiting cylinder, 49 limiting electric push rod, 50 conical block, 51 conical groove, 52 indicator light. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] like Figure 1-Figure 8 As shown, a landfill leachate treatment device includes a filter tank 1 and an inlet pipe 2 and an outlet pipe 3 respectively arranged on the left and right sides of the filter tank 1, a PLC controller 4 is fixedly connected to the right side wall of the filter tank 1, and further includes:

[0033] The lifting assembly 6 is arranged at the front and rear sides of the filter tank 1, and fixes the plurality of filter screens 5 through the sensing assembly 11, and the apertures of the plurality of filter screens 5 gradually decrease from left to right;

[0034] An analysis component 17 is disposed on the front side wall of the filter tank 1 and is used to analyze changes in the filter screen plate 5;

[0035] The flushing assembly 40 is arranged on the rear side wall of the filter tank 1 and is used for cleaning the clogged filter screen plate 5 .

[0036] The lifting assembly 6 includes two placement plates 61 and multiple hydraulic cylinders 62. The two placement plates 61 are respectively fixedly connected to the outer walls of the front and rear sides of the filter tank 1. The multiple hydraulic cylinders 62 are evenly distributed on the upper side walls of the two placement plates 61. The moving ends of the multiple hydraulic cylinders 62 are fixedly connected to the lifting plates 7. The side walls of the multiple lifting plates 7 on the opposite side are rotatably connected to the rotating rods 8. The front side wall of the front lifting plate 7 is fixedly connected to the reduction motor 9. The output end of the reduction motor 9 is fixedly connected to the front end of the front rotating rod 8. The opposite ends of the two rotating rods 8 in the same longitudinal direction are fixedly connected to the same square rod 10, and the rod wall of the square rod 10 is fixedly connected to the indicator light 52. There are four square rods 10. The upper and lower rod walls of the four square rods 10 are connected to the filter screen plate 5 through the sensing assembly 11. The filter screen plate 5 at the lower side is inserted into the filter tank 1 and fits tightly with the inner wall of the filter tank 1. This mechanism can drive the filter screen plate 5 to move up and down.

[0037] The induction assembly 11 includes an induction box 111 and a sliding block 112. The induction box 111 is fixedly connected to the rod wall of the square rod 10. The sliding block 112 is slidably arranged in the induction box 111 through a spring. The side wall of the sliding block 112 is fixedly connected with a guide plate 12. The end of the guide plate 12 away from the sliding block 112 extends out of the induction box 111 and is fixedly connected with a connecting plate 13. The connecting plate 13 is fixedly connected to the filter plate 5 through bolts. The right inner wall of the induction box 111 is fixedly connected with a trigger switch 14 through an elastic rod. The trigger switch 14 is electrically connected to the flushing assembly 40 through the PLC controller 4. The side wall of the sliding block 112 away from the guide plate 12 is inlaid with a conductive block 15. The inner wall of the induction box 111 away from the guide plate 12 is inlaid with an electric The resistance plate 16 and the conductive block 15 are in contact with the resistance plate 16 in the initial state. The right end of the resistance plate 16 is electrically connected to the analysis component 17 through the positioning component 34. The analysis component 17 includes an analysis box 171 and a cross plate 172. The analysis box 171 is fixedly connected to the front side wall of the filter tank 1. The cross plate 172 is fixedly connected to the inner wall of the analysis box 171. Four plug holes are provided on the side wall of the cross plate 172, and the plug rods 18 are inserted into the plug holes. The lower end of the plug rods 18 is fixedly connected to the first permanent magnet block 19. The lower inner wall of the analysis box 171 is fixedly connected to four first electromagnetic blocks 20. The right end of the resistance plate 16 is electrically connected to the corresponding first electromagnetic block 20 through the positioning component 34. The upper ends of the four plug rods 18 are fixedly connected to the conductive plate 21. The same spring is fixedly connected between the guide plate 21 and the cross plate 172, and the two adjacent conductive plates 21 are in contact with each other. The lower side walls of the two conductive plates 21 on the left and right sides are fixedly connected with conductive frames 22. The left and right inner walls of the analysis box 171 are inlaid with conductive seats 23. The conductive seat 23 on the left is electrically connected to the external power supply. The upper side wall of the analysis box 171 is fixedly connected with a control box 24. The inner wall of the control box 24 is fixedly connected with a vertical circle 25. A horizontal pin 26 is inserted in the vertical circle 25. The left end of the horizontal pin 26 is fixedly connected with a circular plate 27. The same spring is fixedly connected between the circular plate 27 and the vertical circle 25. The left side wall of the circular plate 27 is fixedly connected with a second permanent magnet block 28. The left inner wall of the control box 24 is fixedly connected with a second electromagnetic Block 29, the right side conductive seat 23 is connected to the circuit of the second electromagnetic block 29, the right inner wall of the control box 24 is fixedly connected with a push switch 30, the upper inner wall of the analysis box 171 is fixedly connected with a metal plate 31 through a spring, the metal plate 31 is electrically connected to the external power supply through the push switch 30, the upper side wall of the conductive plate 21 is fixedly connected with an insulating layer 32, the upper side wall of the insulating layer 32 is fixedly connected with a metal seat 33, the metal seat 33 is electrically connected to the PLC controller 4, through this mechanism, when a filter screen plate 5 becomes larger in diameter and the filtering accuracy is reduced due to long-term use and wear, the worn filter screen plate 5 can be automatically replaced when the processing device is idle, thereby ensuring the filtering performance of the filter screen plate 5.

[0038] The positioning assembly 34 includes a bent plate 341 and a micro electric push rod 342. The bent plate 341 is fixedly connected to the lower side wall of the rear lifting plate 7. The fixed end of the micro electric push rod 342 is fixedly connected to the upper side wall of the bent plate 341. The rear end of the rear rotating rod 8 extends out of the lifting plate 7 and is fixedly connected to two positioning cylinders 35. The port of the positioning cylinder 35 is connected to a guide bucket 36. The moving end of the micro electric push rod 342 is fixedly connected to a positioning pin 37 that matches the positioning cylinder 35. One end of the positioning pin 37 located in the positioning cylinder 35 is fixedly connected to an electric contact block 38. The electric contact block 38 is electrically connected to the right end of the corresponding resistor plate 16. The inner wall of the positioning cylinder 35 is fixedly connected to an electric contact seat 39. The electric contact seat 39 is electrically connected to the corresponding first electromagnetic block 20. Through this mechanism, after the filter screen plate 5 is replaced, the corresponding resistor plate 16 and the first electromagnetic block 20 can be electrically connected.

[0039] The flushing assembly 40 includes a flushing box 401 and a high-pressure pump 402, which are both fixedly connected to the rear side wall of the filter pool 1, the water inlet end of the high-pressure pump 402 is located in the external water source, and the water outlet end of the high-pressure pump 402 is connected to the flushing box 401. The inner wall of the filter pool 1 is fixedly connected with four water outlet boxes 41 located on the right side of the filter screen plate 5, and the same delivery pipe 42 is fixedly connected between the water outlet box 41 and the flushing box 401, and a control valve 43 is provided in the delivery pipe 42. A water outlet 44 is opened on the side wall of the water outlet box 41 near the filter screen plate 5. Through this mechanism, when the filter screen plate 5 is used for a long time, too many impurities accumulate in the pores of the filter screen plate 5, so that the permeability of the filter screen plate 5 is reduced. When the processing device is idle, the impurities in the pores of the filter screen plate 5 can be automatically flushed to separate the impurities from the pores, thereby ensuring the permeability of the filter screen plate 5, and no manual cleaning is required, thereby reducing the workload of the operator.

[0040] A control electric push rod 45 is fixedly connected to the upper side wall of the front placement plate 61, and a fixing frame 46 is fixedly connected to the output end of the control electric push rod 45. The rear end of the fixing frame 46 is located in the filter tank 1 and is fixedly connected to a collecting cover 47, which can collect impurities cleaned from the surface of the filter screen plate 5.

[0041] The rear side wall of the induction box 111 is fixedly connected to the limiting cylinder 48, and the front inner wall of the limiting cylinder 48 is fixedly connected to the limiting electric push rod 49, the output end of the limiting electric push rod 49 is fixedly connected to the conical block 50, and the rear side wall of the sliding block 112 is provided with a conical groove 51 that matches the conical block 50, which can fix the relative position of the induction box 111 and the sliding block 112.

[0042] The operating principle of the present invention is now described as follows: the garbage leachate is transported to the filter tank 1 through the water inlet pipe 2, and the leachate is filtered through four filter screens 5 from left to right and then discharged from the water outlet pipe 3 (the four filter screens 5 are stainless steel filter screens, fiber filter screens, ceramic filter screens and ultrafiltration membranes from left to right), which can intercept impurity particles of different sizes in turn, thereby achieving a more refined filtering effect and improving the effluent water quality. In addition, the multi-layer filter screens 5 share the filtering load, reducing the wear and clogging degree of each layer of the filter screens 5, thereby extending the service life of the entire filtering device and reducing the replacement frequency and cost;

[0043] When the leachate passes through the filter screen 5, the filter screen 5 will move to the right by a certain distance under the impact of the water flow. After the filter screen 5 has been used for a long time, the long-term use and the friction of impurities in the leachate will make the aperture of the filter screen 5 larger. Some slightly larger particles of pollutants that could not originally pass through this layer of the filter screen 5 can now pass through. The permeability of the filter screen 5 at this location will be greatly increased, and the impact force received by the filter screen 5 at this location will also be reduced. The filter screen 5 located on the right side of the filter screen 5 at this location needs to filter more impurities, and the permeability of the filter screen 5 on the right side will decrease, and the impact force received will also increase.

[0044] Reference Figure 5 and Figure 6For example, when the aperture of the second filter screen plate 5 on the left increases due to the above reasons, the impact force on the filter screen plate 5 will be reduced, and the distance that the second filter screen plate 5 on the left moves to the right will be shortened. The second filter screen plate 5 on the left drives the sliding block 112 and the conductive block 15 to move to the right through the guide plate 12, and the conductive block 15 is also shorter. The conductive block 15 is electrically connected to the external power supply, and the conductive block 15 is in contact with the resistor plate 16 at the location. The right end of the resistor plate 16 is electrically connected to the second first electromagnetic block 20 on the left through the corresponding electric contact block 38 and the electric contact seat 39, so that the second first electromagnetic block 20 on the left is energized to generate magnetic force. At this time, the second conductive block 15 on the left is in contact with the second resistor plate 16 on the left near the left end. When the voltage remains unchanged, the current connected to the circuit of the second first electromagnetic block 20 on the left side becomes smaller, the magnetic attraction generated by the second first electromagnetic block 20 on the left side becomes smaller, and the distance that the second first electromagnetic block 20 on the left side attracts the second first permanent magnet block 19 on the left side to move downward is also relatively short. The third filter screen plate 5 on the left side will be subjected to a greater impact force because it filters more impurities. The third filter screen plate 5 on the left side drives the corresponding conductive block 15 to move to the right for a long distance. Referring to the above principle, the third plug rod 18 on the left side will drive the corresponding conductive plate 21 to continue to move downward until the second conductive plate 21 on the left side and the third conductive plate 21 on the left side are separated, and multiple conductive plates 21 are connected to the circuit of the second electromagnetic block 29 through the conductive frame 22 and the conductive seat 23. On the road, when two of the conducting plates 21 are separated, the circuit of the second electromagnetic block 29 will be disconnected, causing the second electromagnetic block 29 to lose its magnetic force. Under the pulling force of the spring, the circular plate 27 will drive the cross pin 26 to move to the right, thereby squeezing the push switch 30. After being pressed, the push switch 30 will transmit external current to the metal plate 31, and the metal plate 31 is always in contact with the highest metal seat 33 under the elastic force of the spring. At this time, the second metal seat 33 on the left is in contact with the metal plate 31, and the second metal seat 33 on the left is electrically connected to the PLC controller 4, thereby transmitting an electrical signal to the PLC controller 4. After receiving the electrical signal transmitted from the second metal seat 33 on the left, the PLC controller 4 will turn on the device at night. When the machine is idle or shut down for maintenance, the two hydraulic cylinders 62 on the left side are controlled to work. The two hydraulic cylinders 62 will drive the corresponding square rods 10 and the filter screen plates 5 to move upward to the set positions through the lifting plate 7 and the rotating rod 8. Then the PLC controller 4 controls the corresponding micro-electric push rods 342 to work, so that the micro-electric push rods 342 drive the positioning pins 37 to disengage from the positioning cylinder 35. Then the PLC controller 4 controls the corresponding reduction motor 9 to drive the square rods 10 and the two filter screen plates 5 to rotate 180 degrees, move the severely worn filter screen plates 5 to the upper side for placement, and move the spare filter screen plates 5 to the lower side. Then the PLC controller 4 controls the micro-electric push rods 342 to drive the positioning pins 37 to reinsert into another positioning cylinder 35.The positions of the opposing rod 10 and the filter screen plate 5 are fixed, and then the PLC controller 4 controls the two hydraulic cylinders 62 to move downward to restore to the initial position, so that the spare filter screen plate 5 is inserted into the set position to perform filtering work, and then the PLC controller 4 controls the corresponding indicator light 52 to work, which is used to remind the operator to replace the worn filter screen plate 5, and controls the corresponding limit electric push rod 49 to drive the conical block 50 to disengage from the conical groove 51, thereby releasing the relative fixation between the induction box 111 and the sliding block 112;

[0045] Referring to the above principle, the third filter screen plate 5 on the left side is subjected to a greater impact force and moves farther to the right, which will squeeze the corresponding trigger switch 14. The trigger switch 14 will send an electrical signal to the PLC controller 4. After replacing the severely worn filter screen plate 5, the PLC controller 4 will control the high-pressure pump 402 and the corresponding control valve 43 and the hydraulic cylinder 62 to work. The high-pressure pump 402 delivers water to the flushing box 401, and delivers it to the water outlet box 41 through the corresponding delivery pipe 42, and discharges it through the water outlet 44, while the hydraulic cylinder 62 will drive the third filter screen plate 5 on the left side to move to the right side. The three filter screens 5 move upward, so that the filter screens 5 can be washed by high-speed water flow, so that all impurities on the surface of the filter screens 5 fall into the corresponding collection hoods 47 for collection. Similarly, when a filter screen 5 has too many impurities on its surface due to long-term impurity filtering and is subjected to a large impact force, the PLC controller 4 will wash the filter screen 5 when the equipment is idle at night or shut down for maintenance. When the corresponding filter screen 5 is washed, the PLC controller 4 will control the filter screen 5 to move downward to the initial position to continue filtering.

[0046] When a filter screen plate 5 has increased surface impurities due to long-term filtration, the filter screen plate 5 drives the corresponding sliding block 112 and the conductive block 15 to move to the right for a shorter distance, and other filter screen plates 5 will also drive the sliding block 112 and the conductive block 15 to move to the right for a shorter distance due to certain impurities on the surface. That is to say, when the apertures of all filter screen plates 5 have not become larger due to wear, the height difference between two adjacent conductive plates 21 is small, and the process of replacing the filter screen plates 5 will not be triggered by mistake. Only when one filter screen plate 5 is damaged and the aperture becomes larger, and the other filter screen plates 5 are normal, the height difference between the two adjacent conductive plates 21 will become larger, and the two adjacent conductive plates 21 will be separated and not in contact. Referring to the above principle, the metal plate 31 will be energized, thereby triggering the process of replacing the filter screen plates 5.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A landfill leachate treatment device, comprising a filter tank (1) and a water inlet pipe (2) and a water outlet pipe (3) respectively arranged on the left and right sides of the filter tank (1), wherein a PLC controller (4) is fixedly connected to the right side wall of the filter tank (1), characterized in that: Also includes: A lifting component (6) is arranged on the front and rear sides of the filter tank (1), and fixes a plurality of filter screens (5) through a sensing component (11), wherein the apertures of the plurality of filter screens (5) gradually decrease from left to right, the lifting component (6) comprises two placement plates (61) and a plurality of hydraulic cylinders (62), the two placement plates (61) are respectively fixedly connected to the front and rear outer walls of the filter tank (1), the plurality of hydraulic cylinders (62) are evenly distributed on the upper side walls of the two placement plates (61), the moving ends of the plurality of hydraulic cylinders (62) are all fixedly connected to the lifting plates (7), and the side walls on the opposite sides of the two lifting plates (7) in the same longitudinal direction are all rotatably connected to the rotating rods (8); An analysis component (17) is arranged on the front side wall of the filter tank (1) and is used to analyze changes in the filter screen plate (5). The analysis component (17) comprises an analysis box (171) and a transverse plate (172). The analysis box (171) is fixedly connected to the front side wall of the filter tank (1). The transverse plate (172) is fixedly connected to the inner wall of the analysis box (171). Four insertion holes are formed on the side wall of the transverse plate (172), and insertion rods (18) are inserted into the insertion holes. The lower end of the insertion rod (18) is fixedly connected to a first permanent magnet block (19). A flushing assembly (40) is arranged on the rear side wall of the filter tank (1) and is used to clean a clogged filter screen plate (5). The flushing assembly (40) comprises a flushing box (401) and a high-pressure pump (402). The flushing box (401) and the high-pressure pump (402) are both fixedly connected to the rear side wall of the filter tank (1). The water inlet end of the high-pressure pump (402) is located in an external water source. The water outlet end of the high-pressure pump (402) is connected to the flushing box (401). Four water outlet boxes (41) located on the right side of the filter screen plate (5) are fixedly connected to the inner wall of the filter tank (1). The lifting assembly (6) further comprises a reduction motor (9) located on the front side of the lifting plate (7). The output end of the reduction motor (9) The front end of the rotating rod (8) is fixedly connected to the front end, and the opposite ends of the two rotating rods (8) located in the same longitudinal direction are fixedly connected to the same square rod (10), and the rod wall of the square rod (10) is fixedly connected to an indicator light (52). The number of the square rods (10) is four, and the upper and lower rod walls of the four square rods (10) are connected to the filter screen plate (5) through a sensing component (11), and the filter screen plate (5) located at the lower side is inserted into the filter pool (1) and is tightly fitted with the inner wall of the filter pool (1), and the sensing component (11) includes a sensing box (111) and a sliding block (112), the sensing box (111) is fixedly connected to the rod wall of the square rod (10), and the sliding block (112) is slidable by a spring. The invention is arranged in an induction box (111), wherein a side wall of the sliding block (112) away from the square rod (10) is fixedly connected to a guide plate (12), an end of the guide plate (12) away from the sliding block (112) protrudes out of the induction box (111) and is fixedly connected to a connecting plate (13), wherein the connecting plate (13) is fixedly connected to a filter screen plate (5) via bolts, a trigger switch (14) is fixedly connected to the right inner wall of the induction box (111) via an elastic rod, and the trigger switch (14) is electrically connected to a flushing component (40) via a PLC controller (4), a conductive block (15) is embedded in the side wall of the sliding block (112) away from the guide plate (12), and the induction box (111) away from the guide plate (1 2) is inlaid with a resistor plate (16), the conductive block (15) is in contact with the resistor plate (16) in an initial state, the right end of the resistor plate (16) is electrically connected to the analysis component (17) through a positioning component (34), the analysis component (17) further comprises four first electromagnetic blocks (20) fixedly connected to the inner wall of the lower side of the analysis box (171), the right end of the resistor plate (16) is electrically connected to the corresponding first electromagnetic block (20) through the positioning component (34), the upper ends of the four insertion rods (18) are fixedly connected to a conductive plate (21), each of the conductive plates (21) is fixedly connected to the same spring between the horizontal plate (172), and two adjacent conductive plates (21) are in contact with each other,The lower side walls of the two conductive plates (21) on the left and right sides are fixedly connected to conductive frames (22); the inner walls on the left and right sides of the analysis box (171) are inlaid with conductive seats (23); the conductive seat (23) on the left side is electrically connected to an external power supply; the upper side wall of the analysis box (171) is fixedly connected to a control box (24); the inner wall of the control box (24) is fixedly connected to a vertical ring (25); a horizontal pin (26) is inserted into the vertical ring (25); the left end of the horizontal pin (26) is fixedly connected to a circular plate (27); the circular plate (27) and the vertical ring (25) are fixedly connected to the same spring; the left side wall of the circular plate (27) is fixedly connected to a second permanent magnet The control box (24) is provided with a second electromagnetic block (29) fixedly connected to the left inner wall thereof, the conductive seat (23) located on the right side thereof is connected to the circuit of the second electromagnetic block (29), the control box (24) is provided with a push switch (30) fixedly connected to the right inner wall thereof, the upper inner wall of the analysis box (171) is provided with a metal plate (31) fixedly connected to the upper inner wall thereof via a spring, the metal plate (31) being electrically connected to an external power source via the push switch (30), the upper side wall of the conductive plate (21) being provided with an insulating layer (32), the upper side wall of the insulating layer (32) being provided with a metal seat (33), the metal seat (33) being electrically connected to a PLC controller (4).

2. A landfill leachate treatment device according to claim 1, characterized in that: The positioning assembly (34) comprises a bent plate (341) and a micro electric push rod (342); the bent plate (341) is fixedly connected to the lower side wall of the rear lifting plate (7); the fixed end of the micro electric push rod (342) is fixedly connected to the upper side wall of the bent plate (341); the rear end of the rotating rod (8) located at the rear side extends out of the lifting plate (7) and is fixedly connected to two positioning cylinders (35); the port of the positioning cylinder (35) is connected to a guide bucket (36); the moving end of the micro electric push rod (342) is fixedly connected to a positioning pin (37) that matches the positioning cylinder (35); one end of the positioning pin (37) located in the positioning cylinder (35) is fixedly connected to an electric contact block (38); the electric contact block (38) is electrically connected to the right end of the corresponding resistor plate (16); the inner wall of the positioning cylinder (35) is fixedly connected to an electric contact seat (39); the electric contact seat (39) is electrically connected to the corresponding first electromagnetic block (20).

3. A landfill leachate treatment device according to claim 2, characterized in that: The flushing assembly (40) further comprises a delivery pipe (42) fixedly connected between the water outlet box (41) and the flushing box (401), wherein a control valve (43) is provided in the delivery pipe (42), and a water outlet (44) is provided on a side wall of the water outlet box (41) close to the filter screen plate (5).

4. The landfill leachate treatment device according to claim 1, characterized in that: A control electric push rod (45) is fixedly connected to the upper side wall of the placement plate (61) located at the front side, and an output end of the control electric push rod (45) is fixedly connected to a fixing frame (46). The rear end of the fixing frame (46) is located in the filter tank (1) and is fixedly connected to a collection cover (47).

5. The landfill leachate treatment device according to claim 1, characterized in that: The rear side wall of the induction box (111) is fixedly connected to the limiting cylinder (48), and the front inner wall of the limiting cylinder (48) is fixedly connected to the limiting electric push rod (49), the output end of the limiting electric push rod (49) is fixedly connected to a conical block (50), and the rear side wall of the sliding block (112) is provided with a conical groove (51) that matches the conical block (50).

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