Leachate conveying system

Abstract

The utility model discloses a leachate conveying system which comprises a conveying device and an impurity smashing device arranged on the conveying device. The conveying device comprises a barrel with a water inlet and a water outlet, the water outlet is communicated with the impurity smashing device, the impurity smashing device comprises a shell, a stirring mechanism, a water inlet barrel, a water outlet barrel and a sewage draining exit formed in the bottom wall of the shell, a filtering device is arranged in the water outlet pipe, and the filtering device is communicated with the water inlet barrel. The drain outlet is communicated with a drain pipe through a blow-off pipe, and the drain pipe is communicated with a water outlet pipe. The ultrasonic liquid level measuring instrument is arranged to determine the height of deposits in the barrel so that the conveying device can dredge the barrel timely, waste residues are cut and refined through the impurity smashing device, the filtering device is arranged to prevent large impurities from forming clamping stagnation, dirt accumulation can be reduced, the treatment effect of leachate can be improved, the structure is simple and compact, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to leachate treatment technical field, especially relate to a kind of leachate conveying system. BACKGROUND

[0002] The treatment of leachate in domestic waste incineration power plant has been a very thorny problem in the design, operation and management of incineration power plant. The leachate in waste incineration power plant is mainly derived from the moisture of the waste, and the waste leachate is a kind of high-concentration organic wastewater with complex composition. However, in the current filtration process of leachate, various types of garbage from leachate are blocked, so that the filtration system of leachate is often in a state of blockage and paralysis, causing frequent overflow of leachate, causing severe pollution to the site, seriously affecting normal production and site environment. The main reason is that the static grid in the leachate filter causes the grid to be blocked by floating objects during the filtration process of leachate. SUMMARY

[0003] In view of the above technical problems of the prior art, the technical problem to be solved by the utility model is to provide a leachate conveying system which can conveniently stir and crush garbage waste and prevent filter residue from being blocked.

[0004] To solve the above technical problems, one technical scheme of the utility model is to provide a leachate conveying system, which comprises a conveying device and an impurity stirring and crushing device connected with the conveying device; the conveying device comprises a cylinder body with a water inlet and a water outlet, the water inlet is connected with a sewage pipe, the water outlet is connected with the impurity stirring and crushing device, the impurity stirring and crushing device comprises an outer shell, a stirring mechanism arranged in the outer shell, a water inlet cylinder arranged on the side wall of the outer shell and connected with the water outlet, a water outlet cylinder arranged on the side wall of the outer shell and connected with a water outlet pipe, and a blowdown port arranged on the bottom wall of the outer shell, a filter device is arranged in the water outlet pipe, the blowdown port is connected with a drain pipe through a blowdown pipe, and the drain pipe is connected with the water outlet pipe.

[0005] Using the above structure, an ultrasonic liquid level measuring instrument and a drive motor are installed on the cylinder. When the height of the accumulated material is low, the sound beam reflection time is long, so the drive motor is not activated, and the leachate automatically flows out along the cylinder. When the height of the accumulated material is high, the sound beam reflection time is short, and the pneumatic drive motor is activated so that the conveying device can move the accumulated material to the leachate tank and clear the cylinder in a timely manner. When the height of the accumulated material decreases to a suitable height, the sound beam reflection time becomes longer again, so the drive motor is turned off, the conveying device is turned off, and the leachate continues to flow out automatically along the cylinder. The impurity crushing device includes a stirring mechanism installed inside the shell. The stirring mechanism crushes and refines the impurities in the leachate on both sides of the rotation direction so that the leachate that meets the filtration standard can be smoothly filtered and flowed out. The filter device is set to prevent larger impurities in the leachate from getting stuck in the filter gaps, and the drain pipe is set to improve the leachate discharge efficiency inside the shell when the leachate flow rate increases.

[0006] To simplify the installation structure, preferably, the conveying device further includes an ultrasonic liquid level measuring instrument mounted on the cylinder for detecting the liquid level of the leachate conveyed in the cylinder, a screw propeller disposed in the cylinder along the length direction of the cylinder, a drive motor disposed on the outside of one end of the cylinder and connected to one end of the screw propeller, and a PLC controller electrically connected to both the ultrasonic liquid level measuring instrument and the drive motor. The two ends of the screw propeller are rotatably disposed in the cylinder through a first bracket and a second bracket, respectively.

[0007] For ease of installation and use, preferably, the propeller includes a shaftless helical blade, a hollow support sleeve on the first bracket, a connecting conical section at one end of the shaftless helical blade corresponding to the first bracket, the connecting conical section being fitted into the support sleeve; a hollow fixed cylinder on the second bracket, a conical section at one end of the shaftless helical blade corresponding to the second bracket, and a cylindrical section on the conical section, the conical section being fitted into the fixed cylinder, and the cylindrical section being connected to the output end of the drive motor.

[0008] To simplify the structure and facilitate installation, preferably, the stirring mechanism includes blades and a fixing frame mounted on the inner wall of the outer casing. The upper end of the outer casing is provided with a cylinder cover, and the lower end is connected to a drain pipe. A slot is provided in the middle of the fixing frame, and a drive shaft is mounted on the fixing frame. One end of the drive shaft is provided with a ball joint, and the other end passes through the cylinder cover. The ball joint is inserted into the slot. A rotating wheel is provided at the end of the drive shaft, and the rotating wheel is connected to the output belt of the drive motor. A blade holder assembly is mounted on the drive shaft, and the drive shaft passes upward through the cylinder cover and is connected to the output belt of the drive motor fixed on the outer casing.

[0009] To simplify the structure and facilitate installation, and to facilitate the cutting of waste slag, the preferred embodiment of the tool holder assembly includes a first tool holder, a second tool holder, a third tool holder, and a fourth tool holder arranged sequentially from bottom to top. A auger blade sleeve is provided between each pair of adjacent tool holders. The first tool holder includes a first fixed sleeve with three horizontally extending first connecting rods evenly arranged along its circumference, and a first blade is screwed onto each of the first connecting rods. The second tool holder includes a second fixed sleeve with three horizontally extending second connecting rods evenly arranged along its circumference, and a second blade is screwed onto each of the second connecting rods. The third tool holder includes a third fixed sleeve with three horizontally extending third connecting rods evenly arranged along its circumference, and a third blade is screwed onto each of the third connecting rods. The fourth tool holder includes a fourth fixed sleeve with three horizontally extending fourth connecting rods evenly arranged along its circumference, and a fourth blade is screwed onto each of the fourth connecting rods.

[0010] For ease of installation and fixation, preferably, a sleeve is provided in the middle of each of the three auger blade sleeves, and a strip-shaped positioning pin is provided on the drive shaft. Positioning grooves are provided on the inner sidewalls of the three sleeves and the four fixing sleeves at the positions corresponding to the strip-shaped positioning pins. The positioning grooves are fitted on the outside of the strip-shaped positioning pins so that the drive shaft drives the three auger blade sleeves and the four tool holders to rotate synchronously.

[0011] To facilitate rapid discharge of leachate while preventing leakage, preferably, a guide pipe is provided at the lower end of the outer casing, which is connected to the sewage pipe, and a switch valve is also provided on the guide pipe.

[0012] To simplify the installation structure of the filter device and ensure the effectiveness of the filter transmission, preferably, the filter device includes two rows of driven gear sets on the upper end face of the water outlet pipe. Each driven gear set includes seven driven gears arranged side by side and meshing sequentially. Each driven gear is connected to a filter shaft that extends vertically downward into the water outlet pipe. The insertion end of the filter shaft is rotatably connected to the corresponding position at the lower end of the water outlet pipe. A transmission tooth is meshing between the two driven gear sets. A guide rail fixed on the water outlet pipe is provided on each side of the transmission tooth. A first guide block and a second guide block are staggered on the two guide rails. A tooth groove is provided on one side of each of the two guide blocks. The tooth groove meshes with the transmission tooth. The first guide block is connected to the output end of an electric top cylinder fixed on the water outlet pipe.

[0013] To improve the efficiency of waste filtration and facilitate cleaning, preferably, a cleaning device is installed on the drain pipe. The cleaning device includes a water supply pipe, on which a first connecting pipe, a second connecting pipe, a third connecting pipe, and a fourth connecting pipe are sequentially connected along the water outlet direction. The first connecting pipe extends into the drain pipe, and its extended end has a vertically placed first annular water pipe. Seven first nozzles are connected and wound around the lower end of the first annular water pipe, with the outlets of the seven first nozzles all angled downwards along the water outlet direction. The outlet end of the second connecting pipe has a second annular water pipe wound around the outside of the drain pipe, and three second nozzles extend into the drain pipe from the second annular water pipe, with the outlets of the second nozzles all angled downwards. The third connecting pipe... A three-way valve is connected to the upper part of the water inlet cylinder. One side of the three-way valve is connected to a third annular water pipe located inside the outlet cylinder, and the other side is connected to an electric contact level gauge. Six third nozzles are connected and wound around the third annular water pipe. The outlets of the third nozzles are all angled towards the center line of the third annular water pipe. The middle part of the electric contact level gauge is connected to the outlet pipe, and the lower part of the electric contact level gauge is connected to the drain pipe. A drain valve for the level gauge is provided at the bottom of the electric contact level gauge. A fourth connecting pipe extends into the inlet cylinder. The extended end of the fourth connecting pipe is provided with a vertically placed fourth annular water pipe. Six fourth nozzles are connected and wound around one side of the fourth annular water pipe, and six fifth nozzles are connected and wound around the other side. The outlets of the fourth and fifth nozzles are all angled towards the center line of the fourth annular water pipe.

[0014] To ensure air pressure balance within the system and improve cleaning efficiency, preferably, a first flexible hose is provided between the cylinder and the inlet cylinder, and a second flexible hose is provided between the outlet pipe and the drain pipe.

[0015] Beneficial effects: This utility model uses an ultrasonic liquid level measuring instrument to determine the height of the accumulated material inside the cylinder, so that the conveying device can clear the cylinder in a timely manner, and the impurity crushing device can cut and refine the waste residue. The filter device is set to prevent larger impurities from forming blockages, which can reduce the accumulation of dirt and improve the treatment effect of leachate. The structure is simple and compact and easy to operate. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 for Figure 1 EE section view in the image.

[0019] Figure 3 for Figure 1 Enlarged view of point K in the image.

[0020] Figure 4 This is a schematic diagram of the impurity crushing device.

[0021] Figure 5 for Figure 4 The left view.

[0022] Figure 6 This is a schematic diagram of the outer shell.

[0023] Figure 7 This is a schematic diagram of the tool holder assembly.

[0024] Figure 8 This is a schematic diagram of the first tool holder.

[0025] Figure 9 This is a schematic diagram of the structure of the first blade.

[0026] Figure 10 This is a schematic diagram of the second tool holder.

[0027] Figure 11 This is a schematic diagram of the second blade.

[0028] Figure 12 This is a schematic diagram of the third tool holder.

[0029] Figure 13 This is a schematic diagram of the third blade.

[0030] Figure 14 This is a schematic diagram of the fourth tool holder.

[0031] Figure 15 This is a schematic diagram of the fourth blade.

[0032] Figure 16 This is a schematic diagram of the auger blade sleeve.

[0033] Figure 17 for Figure 1 The D-direction view in the image.

[0034] Figure 18 for Figure 16 Enlarged view of point H in the image.

[0035] Figure 19 for Figure 1 BB view in the middle.

[0036] Figure 20 for Figure 1 AA section view in the image.

[0037] Figure 21 for Figure 1FF view in the middle.

[0038] Figure 22 for Figure 17 CC section view in the image.

[0039] Figure 23 for Figure 1 Enlarged view of point G in the image.

[0040] The meanings of the labels in the attached diagram are as follows:

[0041] Cylinder-1; Sewage pipe-10; First hose-12; Fixing frame-13; Guide pipe-130; Switch valve-132; Drive shaft-14; Ball joint-141; Rotary wheel-142; Second hose-15; Ultrasonic liquid level measuring instrument-2; Shaftless spiral blade-3; Drive motor-4;

[0042] First bracket - 21; Support sleeve - 210; Sewage pipe - 211; Connecting conical section - 220; Second bracket - 22; Water outlet pipe - 23; Fixing cylinder - 230; Conical section - 231; Columnar section - 232;

[0043] Outer shell - 30; Cylinder cover - 301; Drive motor - 302; Inlet cylinder - 31; Outlet cylinder - 32; Blade - 33;

[0044] First tool holder - 51; Second tool holder - 52; Third tool holder - 53; Fourth tool holder - 54; Screwdriver blade sleeve - 55; First fixing sleeve - 511; First connecting rod - 512; First blade - 513; Second fixing sleeve - 521; Second connecting rod - 522; Second blade - 523; Third fixing sleeve - 531; Third connecting rod - 532; Third blade - 533; Fourth fixing sleeve - 541; Fourth connecting rod - 542; Fourth blade - 543;

[0045] Driven gear - 61; Filter shaft - 62; Transmission gear - 63; Guide rail - 64; First guide block - 651; Second guide block - 652; Electric top cylinder - 66; Water supply pipe - 7; First connecting pipe - 71; Second connecting pipe - 72; Third connecting pipe - 73; Fourth connecting pipe - 74; First annular water pipe - 711; First nozzle - 712; Second annular water pipe - 721; Second nozzle - 722; Third connecting pipe - 73; Three-way valve - 731; Third annular water pipe - 732; Third nozzle - 733; Fourth connecting pipe - 74; Fourth annular water pipe - 741; Fourth nozzle - 742; Fifth nozzle - 743; Electric contact level gauge - 8; Level gauge drain valve - 81; Drain pipe - 9. Detailed Implementation

[0046] Depend on Figures 1 to 23As shown, this utility model includes a conveying device and an impurity crushing device connected to the conveying device; the conveying device includes a cylinder 1 with an inlet and an outlet, the inlet being connected to a sewage pipe 10, and the outlet being connected to the impurity crushing device; the impurity crushing device includes an outer shell 30, a stirring mechanism disposed within the outer shell 30, an inlet cylinder 31 disposed on the side wall of the outer shell 30 and connected to the outlet, an outlet cylinder 32 disposed on the side wall of the outer shell 30 and connected to an outlet pipe 23, and a drain outlet disposed on the bottom wall of the outer shell 30; a filter device is disposed within the outlet pipe 23; the drain outlet is connected to a drain pipe 9 via a drain pipe 211; and the drain pipe 9 is connected to the outlet pipe 23.

[0047] Specifically, such as Figures 1 to 3 As shown, the conveying device also includes an ultrasonic liquid level measuring instrument 2 mounted on the cylinder 1 for detecting the liquid level of the leachate conveyed in the cylinder 1, a screw propeller disposed in the cylinder 1 along the length direction of the cylinder 1, a drive motor 4 disposed on the outside of one end of the cylinder 1 and connected to one end of the screw propeller, and a PLC controller (not shown) electrically connected to both the ultrasonic liquid level measuring instrument 2 and the drive motor. The two ends of the screw propeller are rotatably mounted in the cylinder 1 through a first bracket 21 and a second bracket 22, respectively.

[0048] The propeller includes a shaftless helical blade 3. A hollow support sleeve 210 is provided on the first bracket 21. A connecting conical section 220 is provided at one end of the shaftless helical blade 3 corresponding to the first bracket 21. The connecting conical section 220 is sleeved in the support sleeve 210. A hollow fixed cylinder 230 is provided on the second bracket 22. A conical section 231 is provided at one end of the shaftless helical blade 3 corresponding to the second bracket 22. A cylindrical section 232 is also provided on the conical section 231. The conical section 231 is sleeved in the fixed cylinder 230, and the cylindrical section 232 is connected to the output end of the drive motor 4.

[0049] like Figure 1 , Figures 4 to 16As shown, the stirring mechanism includes a blade 33 and a fixing frame 13 disposed on the inner wall of the outer shell 30. The upper end of the outer shell 30 is provided with a cylinder cover 301, and the lower end is connected to a drain pipe 211. A slot 131 is provided in the middle of the fixing frame 13. A drive shaft 14 is provided on the fixing frame 13. One end of the drive shaft 14 is provided with a ball joint 141, and the other end passes through the cylinder cover 301. The ball joint 141 is inserted into the slot 131. A rotating wheel 142 is provided at the end of the drive shaft 14. The rotating wheel 142 is connected to the output end of the drive motor 302 by a belt. A blade holder assembly is sleeved on the drive shaft 14. The drive shaft 14 passes upward through the cylinder cover 301 and is connected to the output end of the drive motor 302 fixed on the outer shell 30 by a belt.

[0050] The tool holder assembly includes a first tool holder 51, a second tool holder 52, a third tool holder 53, and a fourth tool holder 54 arranged sequentially from bottom to top. A auger blade sleeve 55 is provided between each adjacent pair of tool holders. The first tool holder 51 includes a first fixing sleeve 511, on which three horizontally extending first connecting rods 512 are evenly arranged along the circumferential direction. A first blade 513 is screwed onto the first connecting rod 512. The second tool holder 52 includes a second fixing sleeve 521, on which three horizontally extending first connecting rods 512 are evenly arranged along the circumferential direction. The second connecting rod 522 is screwed onto the second connecting rod 522; the third tool holder 53 includes a third fixing sleeve 531, on which three horizontally extending third connecting rods 532 are evenly arranged in the circumferential direction, and third blades 533 are screwed onto the third connecting rods 532; the fourth tool holder 54 includes a fourth fixing sleeve 541, on which three horizontally extending fourth connecting rods 542 are evenly arranged in the circumferential direction, and fourth blades 543 are screwed onto the fourth connecting rods 542.

[0051] A sleeve is provided in the middle of each of the three auger blade sleeves 55, and a strip-shaped positioning pin is provided on the drive shaft 14. Positioning grooves are provided on the inner sidewalls of the three sleeves and the four fixed sleeves at the positions corresponding to the strip-shaped positioning pins. The positioning grooves are fitted on the outside of the strip-shaped positioning pins so that the drive shaft 14 can drive the three auger blade sleeves 55 and the four tool holders to rotate synchronously.

[0052] Depend on Figure 4 As shown, a guide pipe 130 is connected to the lower end of the outer casing 30. The guide pipe 130 is connected to the sewage pipe 211. A switch valve 132 is also provided on the guide pipe 130.

[0053] Depend on Figure 1 , Figures 17 to 19As shown, the filtration device includes two rows of driven gear sets on the upper end face of the water outlet pipe 23. Each driven gear set includes seven driven gears 61 arranged side by side and meshed sequentially. Each driven gear 61 is connected to a filter shaft 62 that extends vertically downward into the water outlet pipe 23. The insertion end of the filter shaft 62 is rotatably connected to the corresponding position at the lower end of the water outlet pipe 23. A transmission gear 63 meshes between the two driven gear sets. A guide rail 64 fixed on the water outlet pipe 23 is provided on each side of the transmission gear 63. A first guide block 651 and a second guide block 652 are staggered on the two guide rails 64. A tooth groove is provided on one side of each of the two guide blocks. The tooth groove meshes with the transmission gear 63. The first guide block 651 is connected to the output end of an electric top cylinder 66 fixed on the water outlet pipe 23.

[0054] Depend on Figure 1 , Figure 17 , Figures 20 to 23 As shown, a cleaning device is installed on the drain pipe 9. The cleaning device includes a water supply pipe 7. A first connecting pipe 71, a second connecting pipe 72, a third connecting pipe 73, and a fourth connecting pipe 74 are sequentially connected to the water supply pipe 7 along the water outlet direction. The first connecting pipe 71 extends into the drain pipe 9. The extended end of the first connecting pipe 71 is provided with a vertically placed first annular water pipe 711. Seven first nozzles 712 are connected and wound around the lower end of the first annular water pipe 711. The outlets of the seven first nozzles 712 are all obliquely downward along the water outlet direction. The outlet end of the second connecting pipe 72 is provided with a second annular water pipe 721 wound around the outside of the sewage pipe 211. Three second nozzles 722 are provided on the second annular water pipe 721 extending into the sewage pipe 211. The outlets of the second nozzles 722 are all obliquely downward. A three-way valve 731 is connected to the third connecting pipe 73. One side of valve 731 is connected to a third annular water pipe 732 located inside the water outlet cylinder 32, and the other side is connected to an electric contact level gauge 8. Six third nozzles 733 are connected and wound around the third annular water pipe 732, and the outlets of the third nozzles 733 are all angled towards the center line of the third annular water pipe 732. The middle part of the electric contact level gauge 8 is connected to the water outlet pipe 23, and the lower part of the electric contact level gauge 8 is connected to the drain pipe 211. The bottom of the device 8 is equipped with a level gauge drain valve 81; the fourth connecting pipe 74 extends into the water inlet cylinder 31, and the extended end of the fourth connecting pipe 74 is equipped with a vertically placed fourth annular water pipe 741. Six fourth nozzles 742 are connected and wound around one side of the fourth annular water pipe 741, and six fifth nozzles 743 are connected and wound around the other side. The outlets of the fourth nozzles 742 and the fifth nozzles 743 are all obliquely positioned towards the center line of the fourth annular water pipe 741.

[0055] A first flexible hose 12 is provided between the cylinder 1 and the inlet cylinder 31, and a second flexible hose 15 is provided between the outlet pipe 23 and the drain pipe 9.

[0056] The working principle of this utility model is as follows:

[0057] like Figures 1 to 3 As shown, an ultrasonic liquid level measuring instrument 2 and a drive motor 4 connected to a PLC controller are installed on the cylinder 1. When the height of the accumulated material is low, the sound beam reflection time is long, and the PLC controller does not send a start command to the drive motor 4, so the leachate automatically flows down the cylinder 1. When the height of the accumulated material is high, the sound beam reflection time is short, and the ultrasonic liquid level measuring instrument 2 sends a signal to the PLC controller. The PLC controller then sends a start command to the drive motor 4 so that the screw propeller drives the shaftless screw blade 3 to rotate and move the accumulated material to the leachate tank, clearing the cylinder 1 in a timely manner. When the height of the accumulated material decreases to a suitable height, the sound beam reflection time becomes longer again, and the PLC controller sends a stop command to the drive motor 4. The screw propeller then shuts down, the shaftless screw blade 3 stops rotating, and the leachate continues to flow down the cylinder 1 automatically.

[0058] It should be noted that the PLC controller only selects the minimum value between the two ultrasonic liquid level measuring instruments 2 when the reflection time of the sound beam is the shortest and the accumulation height is reached. At this time, the PLC controller sends a signal to the PLC controller, which then sends a start command to the drive motor 4. When the accumulation height decreases, the PLC controller will only send a signal to the PLC controller when the reflection time of both ultrasonic liquid level measuring instruments 2 returns to a longer value. The PLC controller then sends a stop command to the drive motor 4. In addition, the structure of the shaftless spiral blade 3 can prevent plastic bags, cloth strips and other garbage from getting tangled in the shaft.

[0059] After the leachate enters the outer casing 30 through the inlet cylinder 31, the drive motor 2 is started. The drive shaft 14 drives the four blade holders and three auger blade sleeves 55 to rotate together, and also drives the sewage to rotate. The blades on the four blade holders cut the waste residue in the sewage during rotation. It should be noted that although the cutting edge direction of the first blade 513, the second blade 523, the third blade 533 and the fourth blade 543 are all in the same direction as the rotation of the drive shaft 14, the sewage flow velocity in the outer ring away from the drive shaft 14 will decrease, while the rotation speed of the drive shaft 14 remains unchanged. That is, the cutting speed of the twelve blades remains unchanged. The resulting speed difference can fully crush the waste residue. The leachate that meets the filtration standard flows out after filtration. It should be noted that nine blades 33 are spirally arranged at equal intervals on the inner wall of the outer cylinder 1. They work with the blades on the blade holders to further crush the waste residue, thereby achieving the purpose of refining the waste residue and avoiding clogging of the leachate discharge. In addition, since a drain pipe is installed, it can also quickly remove blockages if there is poor discharge or cleaning is required.

[0060] Simultaneously, the electric top cylinder 66 is activated to reciprocate, which also drives the first guide block 651 to reciprocate synchronously in the horizontal direction. One side of the first guide plate 651 is meshed with a transmission gear 63, which meshes with two sets of driven gears (not shown) on one side, and with the other side meshing with the second guide plate 652. Each driven gear set includes seven driven gears 61 arranged side-by-side and meshing sequentially. That is, the second guide plate 652 and the two sets of driven gears 61 also reciprocate synchronously with the transmission gear 63. The reciprocating rotation of the driven gears 61... The vertically mounted filter shaft 62 rotates back and forth. To avoid jamming, the frequency of the reciprocating rotation should be increased. This requires adjusting the extension and retraction frequency of the electric top cylinder 66. In this way, the reciprocating rotation of the filter shaft 62 creates a swirling flow in the gap between two adjacent filter shafts 62, which can create a surging flow in the gap and accelerate the rapid passage of leachate. If large pieces of impurities that have been crushed and leaked out move to the gap, they are less likely to cause jamming within a short stroke range. At the same time, it can quickly switch to reverse rotation to carry out larger impurities in the opposite direction, avoiding blockage of the gap between the filter shafts 62.

[0061] When cleaning is required, first close the electric butterfly valve (not marked) at the positions of cylinder 1 and drain pipe 9, turn on the drive motor 302 and electric top cylinder 66, the knife holder assembly rotates in one direction, the filter shaft 62 rotates back and forth, and then water enters from the water supply pipe 7. When the water flows through the first connecting pipe 71, it is diverted and flows into the first annular water pipe 711 set in the drain pipe 9, and is sprayed out from the seven first nozzles 712 to remove the residue at the position of drain pipe 9. When the water flows through the second connecting pipe 72, it is diverted into the second annular water pipe 721 wrapped around the sewage pipe 211, and is sprayed out from the second nozzle 722 that extends into the sewage pipe 211 to remove the residue in the sewage pipe 211, and flows to the drain pipe 9 for discharge.

[0062] In sequence, the water flows through the third connecting pipe 73 and then splits into two streams at the three-way valve 731. One stream flows into the third annular water pipe 732 located in the water outlet cylinder 32 and is sprayed out by the third nozzle 733. The outlets of the third nozzles 733 are all angled towards the center line of the third annular water pipe 732, that is, the water outlet direction is all angled downward towards the filter shaft 62. The water sprayed by the third nozzles 733, together with the reciprocating rotation of the filter shaft 62, can achieve a better cleaning purpose. The other stream of water flows into the electric contact level gauge 8. The water flowing into the electric contact level gauge 8 flows into the drain pipe 211 and merges with the water flowing down from the outer casing 30. During this process, the leachate and the cleaning water accumulate in the outer casing 30 and the water outlet cylinder 32 so that the rotation of the blade assembly and the filter shaft 62 can drive the water flow and also move the impurities in the leachate so as to better break them up and discharge them.

[0063] When water flows through the fourth connecting pipe 74, it flows into the fourth annular water pipe 741 and is simultaneously sprayed out by the fourth nozzle 742 and the fifth nozzle 743. The fourth nozzle 742 directly washes the rotating knife holder assembly, while the fifth nozzle 743 directly washes the electric butterfly valve position between the cylinder 1 and the water inlet cylinder 31.

[0064] As the inflow of water increases, the electric contact level gauge 8 displays the water level inside the housing 30. If large particles of waste enter the electric contact level gauge 8, the drain valve 81 of the level gauge can be opened to remove them. Similarly, if a blockage occurs inside the housing 30, the switch valve 132 on the guide pipe 130 can be opened to remove the blockage. In addition, the air inside the housing 30 and the outlet pipe 23 is discharged simultaneously through the second hose 15 and the first hose 12, so the water level inside the housing 30 and the outlet pipe 23 will not be affected by the air pressure. When the electric contact level gauge 8 displays the water level as high, the water supply pipe 7 is closed, and the blade assembly and filter shaft 62 continue to rotate to crush the residual waste in the water. After rotating and rinsing for a period of time, the electric butterfly valve connected to the cylinder 1, the drain pipe 9 and the drain pipe 211 is opened to discharge the cleaned water.

[0065] If further cleaning is required, when the electric contact level gauge 8 shows a low water level, close the electric butterfly valve connected to the cylinder 1, drain pipe 9, and sewage pipe 211 again, and open the water supply pipe 7 to inject water. Repeat the above steps until the cleaning meets the standards. Combined with the ultrasonic liquid level measuring instrument 2 previously installed on the cylinder 1 to monitor the liquid level of the sewage, the flow status of the leachate can be monitored in real time, so that the device can filter and self-clean at the same time. The structure is simple and compact, and it is convenient and flexible to use.

[0066] It should be noted that this embodiment is not unique. Valves can be installed at the connection points between the water supply pipe 7 and the four connecting pipes as needed to control the water supply position for cleaning, save water and improve cleaning efficiency. In addition, the electric butterfly valve used in this embodiment and other valves can be installed as electronic control components and connected to the PLC controller to improve operating efficiency. The contents of the above-mentioned prior art will not be repeated.

Claims

1. A leachate delivery system characterized by: The device comprises a conveying device and a foreign matter stirring device connected with the conveying device; the conveying device comprises a cylinder (1) with a water inlet connected with a sewage pipe (10) and a water outlet connected with the foreign matter stirring device; the foreign matter stirring device comprises a shell (30), a stirring mechanism arranged in the shell (30), a water inlet cylinder (31) arranged on the side wall of the shell (30) and connected with the water outlet, a water outlet cylinder (32) arranged on the side wall of the shell (30) and connected with a water outlet pipe (23), and a sewage discharge port arranged on the bottom wall of the shell (30); a filter device is arranged in the water outlet pipe (23), and the sewage discharge port is connected with a drain pipe (9) through a sewage discharge pipe (211), and the drain pipe (9) is connected with the water outlet pipe (23).

2. A leachate delivery system as claimed in claim 1, wherein: The conveying device further comprises an ultrasonic liquid level meter (2) arranged on the cylinder (1) for detecting the liquid level of the percolate conveyed in the cylinder (1), a screw propeller arranged in the cylinder (1) along the length direction of the cylinder (1), a driving motor (4) arranged on one end side of the cylinder (1) and connected with one end of the screw propeller, and a PLC controller electrically connected with the ultrasonic liquid level meter (2) and the driving motor; the two ends of the screw propeller are rotatably arranged in the cylinder (1) through a first support (21) and a second support (22), respectively.

3. A leachate delivery system as claimed in claim 2, wherein: The screw propeller comprises a shaftless screw blade (3); a hollow support sleeve (210) is arranged on the first support (21), a connecting taper section (220) is arranged on one end of the shaftless screw blade (3) corresponding to the first support (21), and the connecting taper section (220) is sleeved in the support sleeve (210); a hollow fixing cylinder (230) is arranged on the second support (22), a taper section (231) is arranged on one end of the shaftless screw blade (3) corresponding to the second support (22), a cylindrical section (232) is further arranged on the taper section (231), the taper section (231) is sleeved in the fixing cylinder (230), and the cylindrical section (232) is connected with the output end of the driving motor (4).

4. A leachate delivery system as claimed in claim 2, wherein: The stirring mechanism comprises a blade (33) arranged on the inner wall of the shell (30), a fixing frame (13), an upper end of the shell (30) is provided with a barrel cover (301), a lower end is communicated with a sewage pipe (211), a middle part of the fixing frame (13) is provided with a slot (131), a transmission shaft (14) is arranged on the fixing frame (13), one end of the transmission shaft (14) is provided with a ball joint (141), the other end is arranged out of the barrel cover (301), the ball joint (141) is inserted into the slot (131), the transmission shaft (14) is arranged out of the barrel cover (301) and is connected with the output end belt of the transmission motor (302).

5. A leachate delivery system as claimed in claim 4, wherein: The knife rack set comprises a first knife rack (51), a second knife rack (52), a third knife rack (53) and a fourth knife rack (54) arranged in sequence from bottom to top, one auger blade sleeve (55) is arranged between adjacent two of the knife racks, the first knife rack (51) comprises a first fixed sleeve (511), three first connecting rods (512) horizontally extending are uniformly arranged on the first fixed sleeve (511) in the circumferential direction, and a first blade (513) is screwed on the first connecting rod (512); the second knife rack (52) comprises a second fixed sleeve (521), three second connecting rods (522) horizontally extending are uniformly arranged on the second fixed sleeve (521) in the circumferential direction, and a second blade (523) is screwed on the second connecting rod (522); the third knife rack (53) comprises a third fixed sleeve (531), three third connecting rods (532) horizontally extending are uniformly arranged on the third fixed sleeve (531) in the circumferential direction, and a third blade (533) is screwed on the third connecting rod (532); the fourth knife rack (54) comprises a fourth fixed sleeve (541), three fourth connecting rods (542) horizontally extending are uniformly arranged on the fourth fixed sleeve (541) in the circumferential direction, and a fourth blade (543) is screwed on the fourth connecting rod (542).

6. A leachate delivery system as claimed in claim 5, wherein: A sleeve is arranged in the middle part of each of the three auger blade sleeves (55), a strip-shaped positioning pin is arranged on the transmission shaft (14), a positioning groove is arranged on the inner side wall of each of the three sleeves and four fixed sleeves at positions corresponding to the strip-shaped positioning pin, and the positioning groove is sleeved on the outer side of the strip-shaped positioning pin, so that the transmission shaft (14) drives the three auger blade sleeves (55) and the four knife racks to rotate synchronously.

7. A leachate delivery system as claimed in claim 1, wherein: A flow guide pipe (130) is arranged at the lower end of the shell (30) in communication, the flow guide pipe (130) is communicated with the sewage pipe (211), and a switch valve (132) is further arranged on the flow guide pipe (130).

8. A leachate delivery system as claimed in claim 1, wherein: The filtering device comprises two rows of driven gear sets arranged on the upper end surface of the water outlet pipe (23), each driven gear set comprises seven driven gears (61) arranged side by side and connected in sequence, each driven gear (61) is connected with a filtering shaft (62) vertically extending into the water outlet pipe (23), the extending end of the filtering shaft (62) is rotationally connected with the corresponding position of the lower end of the water outlet pipe (23); the two driven gear sets are connected in mesh with a transmission tooth (63), a guide rail (64) fixed on the water outlet pipe (23) is arranged on the two sides of the transmission tooth (63), a first guide block (651) and a second guide block (652) are arranged on the two guide rails (64) in a staggered manner, one side of each of the two guide blocks is provided with a tooth groove, the tooth groove is connected in mesh with the transmission tooth (63), the first guide block (651) is connected with the output end of the electric lifting cylinder (66) fixed on the water outlet pipe (23).

9. A leachate delivery system as claimed in claim 1, wherein: The drain pipe (9) is provided with a cleaning device, the cleaning device comprises a water supply pipe (7), a first connecting pipe (71), a second connecting pipe (72), a third connecting pipe (73) and a fourth connecting pipe (74) are sequentially and communicatively arranged on the water supply pipe (7) in the water outlet direction, the first connecting pipe (71) extends into the drain pipe (9), the extending end of the first connecting pipe (71) is provided with a first annular water pipe (711) arranged vertically, seven first spray heads (712) are arranged on the lower end of the first annular water pipe (711) in a winding manner, the water outlets of the seven first spray heads (712) are all arranged obliquely downward in the water outlet direction; the water outlet end of the second connecting pipe (72) is provided with a second annular water pipe (721) arranged on the outer side of the drain pipe (211) in a winding manner, three second spray heads (722) extending into the drain pipe (211) are arranged on the second annular water pipe (721), the water outlets of the second spray heads (722) are all arranged obliquely downward; a three-way valve (731) is connected to the third connecting pipe (73), one side of the three-way valve (731) is in communication with a third annular water pipe (732) arranged in the water outlet cylinder (32), the other side of the three-way valve (731) is in communication with an electric contact liquid level meter (8), six third spray heads (733) are arranged on the third annular water pipe (732) in a winding manner, the water outlets of the third spray heads (733) are all arranged obliquely toward the center line of the third annular water pipe (732), the middle part of the electric contact liquid level meter (8) is in communication with the water outlet pipe (23), the lower part of the electric contact liquid level meter (8) is in communication with the drain pipe (211), and a liquid level meter drain valve (81) is arranged at the bottom of the electric contact liquid level meter (8); the fourth connecting pipe (74) extends into the water inlet cylinder (31), the extending end of the fourth connecting pipe (74) is provided with a fourth annular water pipe (741) arranged vertically, six fourth spray heads (742) and six fifth spray heads (743) are arranged on one side and the other side of the fourth annular water pipe (741) in a winding manner, respectively, the water outlets of the fourth spray heads (742) and the fifth spray heads (743) are all arranged obliquely toward the center line of the fourth annular water pipe (741).

10. A leachate delivery system as claimed in claim 4, wherein: A first hose (12) is arranged in communication between the barrel (1) and a water inlet barrel (31), and a second hose (15) is arranged in communication between the water outlet pipe (23) and a drain pipe (9).

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