A filter tank with a shared filter material lifting pipeline and filter material cleaning device

Abstract

The present invention discloses a filter tank with a shared filter material lifting pipeline and a filter material cleaning device, comprising a plurality of tank bodies arranged in parallel, a set of tracks laid above the tank bodies, a filter material cleaning device movable along the tracks placed on the tracks; a filter material lifting pipeline that can be raised and lowered is provided on the filter material cleaning device, and a top pipe is provided below the filter material lifting pipeline; deep water valves are provided on opposite sides of the two rows of tank bodies, and a movable piston is provided in the deep water valve; the top pipe below the filter material lifting pipeline can be inserted into the deep water valve and press down the piston to connect the tank body with the filter material lifting pipeline. The present invention places a movable filter material cleaning device and a filter material lifting pipeline on the tracks above the tank bodies, so that the filter material cleaning device can move back and forth in each tank body, and the filter material lifting pipeline can cooperate with the deep water valve of any tank body, so that the two rows of tank bodies can share a set of filter material cleaning devices and filter material lifting pipelines, thereby improving equipment utilization and reducing costs.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment equipment, and in particular relates to a filter tank with a common filter material lifting pipeline and a filter material cleaning device. Background Art

[0002] The mobile sand filter and mobile activated carbon adsorption filter currently used in the water treatment industry have single-stage, two-stage or multi-stage modes according to the different concentrations of pollutants that need to be removed. The purpose of the multi-stage setting is to increase the total height of the filter layer and increase the time of the treated sewage to improve the treatment effect. When the amount of water to be treated is large, it is necessary to use a method of parallel operation of multiple tanks at each stage. These filter tanks are independent of each other and have their own pipelines and filter cleaning devices.

[0003] This type of filter tank that cleans the filter media while it is running is mostly cleaned by air lift, where the bottom filter media is transported to the cleaning device at the top of the tank through a pipe. Each tank has a set of filter media lifting pipes and valves. These pipes are always in wear and tear during use. In order to ensure a sufficient service life, the pipes and valves must be made of corrosion-resistant and wear-resistant materials, or their thickness must be increased. Such pipes and valves are often expensive, which means that the construction cost and operation and replacement cost of the filter tank are both high.

[0004] The filter media cleaning device often has idle time. Each filter tank is equipped with a filter media cleaning device, which makes the equipment investment cost high. Moreover, the filter media in each tank only needs to be cleaned for one hour a day, or a few hours at most. The filter media lifting pipeline and filter media cleaning device are idle at other times, that is, the equipment utilization rate is very low.

[0005] The cleaning when adding new filter media and the daily cleaning of the filter media in the pool have different requirements for the cleaning output of the filter media cleaning device. The current filter media cleaning devices cannot meet the demand for variable cleaning output. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems and to provide a filter tank with a common filter material lifting pipeline and a filter material cleaning device which has a simple structure and saves costs.

[0007] To this end, the technical solution of the present invention is: a filter tank with a common filter material lifting pipeline and a filter material cleaning device, comprising a plurality of tank bodies arranged in parallel, the tank bodies are arranged in rows and columns, and have at least two rows; it is characterized in that: a group of tracks are laid above every two rows of tank bodies, and the tracks are located in the middle of the two rows of tank bodies; a filter material cleaning device is placed on the track, and a power component is provided on the filter material cleaning device to drive the filter material cleaning device to move along the track above the tank body; a liftable filter material lifting pipeline is provided on the filter material cleaning device, a top pipe is provided below the filter material lifting pipeline, and a feed port is provided on the side of the top pipe; deep water valves are provided on the opposite side of the two rows of tank bodies, a movable piston is provided in the deep water valve, and a sealing block is provided on the top of the piston to seal with the discharge port of the deep water valve; the top pipe below the filter material lifting pipeline can be inserted into the deep water valve, and the piston is pressed down to connect the tank body and the filter material lifting pipeline.

[0008] Preferably, a water inlet distribution channel is provided between every two rows of pool bodies, and a deep water valve is placed at the bottom of the water inlet distribution channel and is respectively connected to the bottom of one of the pool bodies.

[0009] Preferably, a pipe rack is provided above the filter material cleaning device, and the filter material lifting pipeline is installed on the pipe rack; lifting cylinders are provided on both sides of the filter material cleaning device, and the cylinder rods of the lifting cylinders are connected to the pipe rack to drive the pipe rack and the filter material lifting pipeline to rise and fall.

[0010] Preferably, the feed end of the filter material cleaning device is provided with two primary feed hoppers and one secondary feed hopper, and a lifting push rod is provided below the secondary feed hopper to drive the secondary feed hopper to rise and fall; when the filter material lifting pipeline is descended to be connected with the deep water valve, the discharge end of the filter material lifting pipeline is connected with the primary feed hopper; a filter material adding valve is provided above the filter material cleaning device, and the secondary feed hopper can rise to be connected with the filter material adding valve.

[0011] Preferably, an air lift device is also installed below the filter material lifting pipeline, the top pipe is located below the air lift device, and above the air lift device is a discharge pipe. A switching valve is provided on the discharge pipe, and the switching valve is divided into two routes, one is a cleaning branch connected to the first-level feed hopper, and the other is an external discharge branch connected to the filter material external discharge valve arranged on the side of the track; the air lift device is connected to the air intake valve through an air intake pipe.

[0012] Preferably, a plurality of cleaning stations are provided on the track, corresponding to each pool body; a compressed air pipe is provided above the track, and a plurality of air circuit docking valves are provided on the compressed air pipe, corresponding to the positions of the cleaning stations; the air circuit docking valve comprises a valve body and a valve core, the valve core is placed in the valve body, the upper part of the valve body is an air inlet chamber, and the lower part of the valve body is a guide sleeve; the valve core is placed in the middle of the valve body, and a second spring is provided above the valve core; the filter material cleaning device is provided with a hollow push rod and an electric push rod for driving the hollow push rod to rise and fall, and the side of the hollow push rod is connected to the air outlet pipe; when the filter material cleaning device moves to any cleaning station, the hollow push rod moves up to dock with the air circuit docking valve corresponding to the cleaning station, the head of the hollow push rod is inserted into the guide sleeve of the valve body, and pushes the valve core to move up, connecting the compressed air pipe and the air outlet pipe.

[0013] Preferably, the valve core is placed in the through hole in the middle of the valve body, and an air inlet channel and an air outlet channel are provided in the valve core. The air inlet channel is connected to the air inlet chamber, and the air outlet channel is connected to the guide sleeve; a first sealing ring is provided on the outer side of the valve core, which fits tightly with the inside of the through hole in the middle of the valve body. The first sealing ring is located between the air inlet channel and the air outlet channel, separating the air inlet chamber and the guide sleeve.

[0014] Preferably, the deepwater valve comprises an upper valve chamber, a mounting plate and a lower valve chamber, a conical guide tube is installed at the upper end of the upper valve chamber, and the lower end of the lower valve chamber is the inlet end; the mounting plate is placed between the upper and lower valve chambers, a piston cylinder is fixed on the mounting plate, the piston is placed in the piston cylinder and can move relative to the piston cylinder, the sealing block at the top of the piston is sealed with the pipe mouth of the guide tube, and a first spring is provided between the piston and the piston cylinder.

[0015] Preferably, a sealing tube is provided above the guide tube, a conical guide block is provided above the feed port of the top tube, a sealing ring is provided on the guide block, and when the top tube is inserted into the upper valve cavity from the guide tube, the sealing ring on the guide block fits tightly with the sealing tube.

[0016] Preferably, the filter material cleaning device also includes a first cylindrical screen and a second cylindrical screen, the first screen and the second screen are coaxially arranged, and the two screens are internally connected, the first screen is connected to the first and second feed hoppers, the second screen is connected to the discharge reversing valve, the discharge reversing valve is connected to two discharge troughs, and the discharge troughs face the pool bodies on both sides respectively; the lower parts of the first screen and the second screen are placed in a water tank, and material pushing spiral pieces are fixed in the first screen and the second screen; a driving component is also provided to drive the first screen and the second screen to roll, the first screen and the second screen roll in their respective water tanks, and the internal material pushing spiral pieces rotate synchronously.

[0017] The present invention arranges multiple tank bodies into at least two rows, lays tracks in the middle, and places movable filter material cleaning devices on the tracks, so that the filter material cleaning devices can move back and forth in each tank body, so that two rows of tank bodies can share a set of filter material cleaning devices, thereby improving equipment utilization and reducing costs.

[0018] In order to further reduce the equipment cost, the filter media cleaning device is also equipped with a filter media lifting pipeline that can be raised and lowered. Each tank body is equipped with a deep water valve on the side. A water inlet distribution channel is set between every two rows of tank bodies, and the deep water valve is placed at the bottom of the water inlet distribution channel. The distribution channel is also the channel for the horizontal reciprocating movement of the filter media lifting pipeline, and the cleaning water of the filter media cleaning device can also be directly taken from the water channel. The filter media lifting pipeline moves with the filter media cleaning device on each tank body, and can work with the deep water valve of any tank body, so that multiple tank bodies can share a set of filter media lifting pipelines.

[0019] When the deepwater valve is closed, the first spring is in a compressed state. The elastic force given by the first spring causes the sealing block at the top of the piston to be tightly pressed against the orifice of the guide tube, so that the entire valve is in a closed state. When the deepwater valve needs to be opened, the filter material lifting pipeline descends, and the top pipe at the bottom of the gas is inserted into the upper valve cavity from the sealing tube and the guide tube. The top pipe presses down the piston, so that the sealing block at the top of the piston is separated from the orifice of the guide tube, thereby connecting the deepwater valve and the top pipe. The opening and closing actions of the deepwater valve are completed in the vertical direction, and the operation is simple; the liftable filter material lifting pipeline is installed on a movable filter material cleaning device, and two rows of pools share a set of filter material lifting pipelines, which can greatly reduce pipeline configuration and reduce pipeline idle time.

[0020] At the same time, the filter material cleaning device requires compressed air during use, and when the filter material cleaning device moves on the track above the pool body, it becomes somewhat difficult to automatically connect the air circuit to the equipment. If a small compressed air preparation machine is installed on the filter material cleaning device, the equipment cost will increase. Therefore, the present invention further arranges a compressed air pipe above the track, and a plurality of air circuit docking valves are arranged on the compressed air pipe, and then a hollow push rod that cooperates with the air circuit docking valve is arranged on the filter material cleaning device, and the air outlet of the hollow push rod is connected to the equipment on the filter material cleaning device that needs air. Therefore, after the filter material cleaning device moves to the cleaning station, the hollow push rod can rise to connect the air circuit docking valve, and connect the compressed air required for pneumatic conveying of the filter material, which can greatly reduce the cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 for Figure 1A partial enlarged view of

[0024] Figure 3 for Figure 1 AA section view;

[0025] Figure 4 for Figure 1 BB cross-sectional view;

[0026] Figure 5 for Figure 1 CC section view;

[0027] Figure 6 This is a schematic diagram of the deepwater valve closing operation;

[0028] Figure 7 This is a schematic diagram of the deepwater valve opening operation;

[0029] Figure 8 It is a structural side view of the pool body;

[0030] Fig. 9 It is a structural schematic diagram of a filter material cleaning device;

[0031] Fig.10 It is a side schematic diagram of the filter material cleaning device;

[0032] Fig.11 It is a top view schematic diagram of the filter material cleaning device;

[0033] Fig.12 This is a schematic diagram of the structure of a deepwater valve;

[0034] Fig.13 This is a structural diagram of the filter material lifting pipeline;

[0035] Fig.14 Schematic diagram of opening the valve for the filter media lifting pipeline;

[0036] Fig.15 This is a structural cross-sectional view of the gas path connection valve;

[0037] Fig.16 It is a structural cross-sectional view of the hollow mandrel;

[0038] Fig.17 It is a schematic diagram of the matching status of the gas line connection valve and the hollow push rod.

[0039] The markings in the figure are:

[0040] Pool body 1, water inlet and distribution channel 2, main water inlet channel 3, main water outlet channel 4, track 5, guardrail 7, position sensor block 8, sensor switch 9;

[0041] Filter material adding valve 11, filter material return trough 12, pipeline rack 13, lifting cylinder 14, pipeline guide frame 15, pipeline guide ring 16, filter material lifting pipeline 17, top pipe 18, air stripping device 19, discharge pipe 20, air inlet valve 21, air inlet pipe 22, filter material cleaning / external discharge switching valve 23, filter material external discharge valve 24, filter material external discharge pipeline 25, feed port 26, guide block 27, fifth sealing ring 10;

[0042] Deepwater valve 28, filter material discharge pipe 29, sealing pipe 30, guide pipe 31, upper valve chamber 32, mounting plate 33, lower valve chamber 34, reducer 35, feed inlet flange 36, piston cylinder 37, piston 38, sealing block 39, first spring 40;

[0043] Compressed air pipe 41, air path connection valve 42, valve body 43, valve core 44, air inlet chamber 45, air inlet 46, guide sleeve 47, second sealing ring 48, first air inlet hole 49, first air outlet hole 50, second air inlet hole 51, second air outlet hole 52, first sealing ring 53, third sealing ring 54, second spring 55, hollow push rod 56, electric push rod 57, air outlet 58, fourth sealing ring 59;

[0044] Filter material cleaning device 6, driving wheel 61, primary feed hopper 62, secondary feed hopper 63, discharge trough 64, lifting push rod 65, discharge reversing valve 66, first screen 67, second screen 68, first water trough 69, second water trough 70, sewage trough 71, aeration motor 72, cleaning motor 73, driven gear 74, power motor 77, control cabinet 79, flushing water pump 80, flushing pump water inlet pipe 81, elevator 82, water inlet pipe flexible section and its drag chain 83; induction block 85, proximity switch 86, filter tank water distribution pipe 87, filter tank water inlet pipe 88, water outlet weir 89. DETAILED DESCRIPTION

[0045] See the attached drawings. The filter tank described in this embodiment takes a primary filter tank and two rows of 20 filter tank bodies as an example, with 10 tank bodies 1 arranged in each row, and a water inlet distribution channel 2 is arranged between the two rows of tank bodies, connecting the main water inlet channel 3 and the main water outlet channel 4. A set of tracks 5 is laid above the primary filter tank, and the tracks 5 are located between the two rows of tank bodies 1; a filter material cleaning device 6 is placed on the tracks 5, and a driving wheel 61 and a power motor 77 that drives the driving wheel to rotate are provided on the filter material cleaning device 6, driving the filter material cleaning device 6 to move along the tracks above the primary filter tank.

[0046] A guardrail 7 is provided above the track 5, and 10 position sensing blocks 8 are provided on the guardrail 7, corresponding to 10 cleaning stations. A sensor switch 9 is provided on the filter material cleaning device 6. When the two work together, the filter material cleaning device can start the filter material cleaning work.

[0047] The feed end of the filter material cleaning device 6 is provided with two first-level feed hoppers 62 and one second-level feed hopper 63. The two first-level feed hoppers 62 are located on both sides of the second-level feed hopper 63. The first-level feed hopper 62 is used to connect the discharge end of the filter material lifting pipeline 17; a lifting push rod 65 is provided below the second-level feed hopper 63 to drive the second-level feed hopper to rise and fall, and a filter material adding valve 11 is provided above the filter material cleaning device. The second-level feed hopper 63 can rise to connect with the filter material adding valve 11, which is used to receive new filter material from the next level filter tank or the outside through the pipeline to add to the filter tank. The discharge end of the filter material cleaning device 6 is provided with a discharge reversing valve 66, which connects two discharge troughs 64. A swinging baffle is provided inside the discharge reversing valve, and the two discharge troughs 64 are switched on and off by the baffle; the two discharge troughs face the tank body on both sides of the track respectively, and a filter material return trough 12 is provided on the tank body to facilitate the falling of the filter material.

[0048] The frame of the filter material cleaning device 6 is provided with a cylindrical first screen 67 and a second screen 68, the first screen and the second screen are coaxially arranged, and the two screens are internally connected; the first screen 67 is connected to the primary feed hopper and the secondary feed hopper, and the second screen 68 is connected to the discharge reversing valve 66; the lower parts of the first screen and the second screen are placed in a water tank, a first water tank 69 is provided below the first screen 67, and a second water tank 70 is provided below the second screen 68, the first water tank is connected to the second water tank, and the second water tank is higher than the first water tank; the first screen and the second screen are both fixed with material propulsion spirals, and a plurality of scooping plates are fixed on the material propulsion spirals, which are sheet-like structures and are evenly inserted on the circumference of the material propulsion spirals. A drain port is provided on the first water tank 69, which is connected to the sewage pipeline through the sewage tank 71; an aeration motor 72 is provided below the filter material cleaning device 6, and the fine filter material screened by the first and second screens will be deposited at the bottom of the water tank, and needs to be aerated and stirred up and then discharged with the water flow.

[0049] A circle of nozzles is provided inside the second screen, and a flushing water pump 80 is provided below the second screen. The flushing water pump directly draws water from the top of the filter tank through the flushing pump water inlet pipe 81, and is connected to the nozzle inside the second screen through a pipeline. The sewage brought from the first screen into the filter material is cleaned by the supernatant of the filter tank, and the waste water generated by the cleaning is collected by the second water tank and flows into the first water tank as the washing water for the filter material at the first screen. The flushing pump water inlet pipe 81 is connected to the flushing water pump 80 through a flexible section of the water inlet pipe and its drag chain 83. The flushing pump water inlet pipe 81 is also provided with a lift 82 to drive it up and down. When the filter material cleaning device 6 moves, the flushing pump water inlet pipe 81 is raised and separated from the filter tank to avoid interfering with the movement of the filter material cleaning device 6.

[0050] The filter material cleaning device 6 also includes a driving assembly that drives the first screen 67 and the second screen 68 to roll, so that the first screen and the second screen roll in their respective water tanks, and the internal material push spirals rotate synchronously. The driving assembly includes a cleaning motor 73 installed on the frame, the cleaning motor 73 is located on the side of the first screen, a driving gear is fixed on the cleaning motor 73, and a driven gear 74 is provided on the side of the first screen 67, and the driving gear is meshed with the driven gear; the first screen 67 is provided with a first rolling ring at one end, and the other end is connected to the second screen through a second rolling ring, and two sets of supporting wheels are provided on the frame, and the first screen and the second screen are mounted on the supporting wheels of the frame through the rolling rings.

[0051] The filter material cleaning device is also provided with a control cabinet 79, which contains various functional modules and can be manually operated to control the movement and cleaning of the filter material cleaning device. The entire cleaning process can also be remotely controlled manually or fully automatically through wireless communication, and the control mode can be set.

[0052] A pipe rack 13 is provided above the filter material cleaning device 6, and lifting cylinders 14 are provided on both sides of the filter material cleaning device. The cylinder rod of the lifting cylinder is connected to the pipe rack 13, and the lifting cylinder 14 can drive the pipe rack 13 to move up and down; a pipeline guide frame 15 is installed below the filter material cleaning device, and a pipeline guide ring 16 is provided on the pipeline guide frame 15. The filter material lifting pipeline 17 is fixedly installed on the pipe rack 13 above, and the filter material lifting pipeline passes through multiple pipeline guide rings below, so that it can perform lifting and lowering movements.

[0053] The filter material lifting pipeline 17 is composed of a top pipe 18, an air stripping device 19, a discharge pipe 20 and an air inlet valve 21. The discharge pipe 20 and the top pipe 18 are respectively located at the upper and lower ends of the air stripping device 19. The air stripping device 19 is connected to the air inlet valve 21 through an air inlet pipe 22. The discharge pipe 20 is provided with a filter material cleaning / external discharge switching valve 23. The filter material cleaning / external discharge switching valve 23 is divided into two paths, one is a cleaning branch, which can be connected to the first-level feed hopper 62 when descending, and the other is an external discharge branch, which can be connected to the filter material external discharge valve 24 set on the side of the track when descending. The filter material external discharge valve 24 is set on the filter material external discharge pipeline 25, which can discharge the filter material of the filter tank. A feed port 26 is provided on the side of the top pipe 18, and a conical guide block 27 is provided above the feed port, and a fifth sealing ring 10 is provided on the guide block.

[0054] A water inlet distribution channel 2 is provided between the two rows of pool bodies 1, and 20 deep water valves 28 are provided at the bottom of the water inlet distribution channel, which are connected to the bottom of the 20 pool bodies 1 through a filter material discharge pipe 29. The deep water valve 28 is divided into upper and lower parts, the upper half of the valve is composed of a sealing pipe 30, a guide pipe 31, and an upper valve cavity 32, the upper end of the upper valve cavity 32 has an opening, a conical guide pipe 31 is fixedly installed at the opening, and a sealing pipe 30 is arranged above the guide pipe 31; the lower half is composed of a mounting plate 33, a lower valve cavity 34, a reducer 35 and a feed inlet flange 36, the lower end of the lower valve cavity 34 is installed with a reducer 35, and the feed inlet flange 36 is installed at the bottom of the reducer 35. The mounting plate 33 is placed between the upper and lower valve chambers. The mounting plate is a hollow structure all around, and a piston cylinder 37 is installed in the middle. The piston cylinder 37 is a hollow cylindrical structure, and a piston 38 that can move relative to the piston cylinder is arranged inside. A sealing block 39 is arranged on the top of the piston; a first spring 40 is arranged between the piston 38 and the piston cylinder 37, and the first spring 40 is in a compressed state. The sealing block 39 on the top of the piston is sealed with the pipe mouth of the guide tube 31.

[0055] When the deep water valve 28 is opened, the filter material lifting pipeline 17 descends, and under the action of the guide block 27 of the top pipe, the top pipe 18 moves downward in the center. When the fifth sealing ring 10 installed on the guide block 27 enters the sealing pipe 30 of the deep water valve, the deep water valve 28 and the filter material lifting pipeline 17 are sealed and connected; the top pipe 18 continues to move downward, reaches the top of the piston 38 and continues to press down, connecting the upper and lower parts of the valve. When the air inlet valve 21 of the filter material lifting pipeline 17 is opened, the water in the top pipe is transported away, making the liquid level in the top pipe much lower than the liquid level in the pool body. Under the action of the liquid level difference, the water and materials in the pool body flow into the top pipe 18 through the deep water valve 28, and then are transported to the filter material cleaning device 6 by the air lift device 19. When the deepwater valve 28 is closed, the filter material lifting pipeline 17 rises, the top pipe 18 is lifted upward, and the piston 38 moves upward under the action of the first spring 40, pressing the sealing block 39 on the top of the piston against the pipe mouth of the guide pipe 31, thus completing the closing of the deepwater valve 28.

[0056] A compressed air pipe 41 is provided above the track, and 10 air circuit docking valves 42 are provided on the compressed air pipe, which correspond to the positions of the cleaning stations one by one; the air circuit docking valve 42 includes a valve body 43 and a valve core 44, the upper part of the valve body 43 is an air inlet chamber 45, the top of the air inlet chamber 45 is provided with an air inlet port 46, and the lower part of the valve body is a guide sleeve 47, and the opening of the guide sleeve faces downward; a through hole is provided in the middle part of the valve body, and the valve core 44 is placed in the through hole of the valve body 43, and the upper part of the valve core is a protruding step portion, which is located above the through hole, which can ensure that the entire valve core will not sink into the through hole, and the step portion on the upper part of the valve core 44 is tightly fitted with the inner wall of the air inlet chamber 45 of the valve body through the second sealing ring 48, which plays the role of fixing the valve core 44 and sealing the air inlet chamber 45.

[0057] A first air inlet 49 is provided at the center of the step portion above the valve core 44, and a first air outlet 50 and a second air inlet 51 are provided on the side surfaces respectively, and a second air outlet 52 is provided at the center below the valve core. The first air inlet 49 is connected with the first air outlet 50 to form an air inlet passage, and the air inlet passage is connected to the air inlet chamber 45. The second air inlet 51 is connected with the second air outlet 52 to form an air outlet passage, and the air outlet passage is connected to the guide sleeve 47. A first sealing ring 53 and a third sealing ring 54 are sleeved on the valve core 44, and two circles of grooves are provided on the inner wall of the valve body through hole. The first sealing ring 53 and the third sealing ring 54 are respectively placed in the two grooves. When the valve core moves upward, the positions of the first sealing ring 53 and the third sealing ring 54 remain unchanged. The first sealing ring 53 is located between the first air outlet 50 and the second air inlet 51, and the first sealing ring is tightly fitted with the inner wall of the valve body to separate the connection between the first air outlet and the second air inlet, thereby separating the passage between the air inlet chamber 45 and the guide sleeve 47. The third sealing ring 54 fits tightly against the inner wall of the through hole of the valve body. The third sealing ring 54 is located below the second air inlet hole 51 and also plays the role of fixing the valve core 44. A second spring 55 is provided in the air inlet chamber 45. One end of the second spring 55 abuts against the top of the air inlet chamber 45 and the other end abuts against the top of the valve core 44. The second spring is in a compressed state, which can move the valve core 44 downward and block it in the through hole of the valve body, so that the air path docking valve 42 is in a closed state.

[0058] The push rod assembly is matched with the air path docking valve 42, and the push rod assembly includes a hollow push rod 56 and an electric push rod 57 that drives the hollow push rod to move upward. The top of the hollow push rod 55 is a hollow conical head, and the side of the hollow push rod is provided with an air outlet 58. The hollow push rod is provided with an airway connecting the conical head and the side outlet, and the bottom of the hollow push rod is a closed structure; a fourth sealing ring 59 is provided below the conical head of the hollow push rod, which fits tightly with the inner wall of the guide sleeve 47 below the valve body. The bottom of the hollow push rod is provided with a mounting hole, which is installed on the top of the electric push rod 57 by fastening bolts, and the electric push rod 57 is installed on the filter material cleaning device 6.

[0059] When the hollow push rod 55 moves upward, the conical head of the hollow push rod 55 is inserted into the guide sleeve 47 below the valve body, and the valve core 44 is pushed upward, and the first air outlet 50 and the second air inlet 51 in the middle of the valve core are moved above the first sealing ring 53, thereby connecting the air inlet channel and the air outlet channel, connecting the air inlet 46 at the upper end of the valve body and the air outlet 58 on the side of the hollow push rod, so that the valve is opened. The side of the valve body is provided with a sensing block 85, and the side of the hollow push rod is provided with a proximity switch 86. The sensing block cooperates with the proximity switch to sense whether the hollow push rod 55 and the gas path docking valve 42 are installed in place.

[0060] During water treatment, the incoming water enters the water inlet pipes 88 of each filter tank through the water inlet distribution channel 2, and is then distributed to the branch filter tank water distribution pipes 87. The water flowing out of the filter tank water distribution pipes 87 passes through the filter material layer upward, and the pollutants in the water are gradually intercepted or adsorbed. The water gradually becomes clean and finally flows out from the water outlet weir 89 at the top to the next level filter tank for further treatment or to the next treatment process.

[0061] During daily cleaning of the filter material, the filter material cleaning device 6 is provided with two left and right discharge troughs 64. Therefore, to clean the filter material of 20 pool bodies, the filter material cleaning device 6 only needs to stay in 10 positions, that is, only 10 cleaning stations are required. When the left side of a cleaning station needs to be cleaned, the filter material cleaning device 6 runs to this cleaning station, switches the discharge to the left side, and at the same time, the electric push rod 57 pushes the hollow push rod 55 upward, connects with the air circuit docking valve 42, and connects the compressed air to the filter material cleaning device; then the filter material lifting pipeline 17 descends, the top pipe 18 at the bottom of the pipeline is pressed down, the deep water valve 28 is opened, and then the air inlet valve 21 is opened to lift the filter material to the first-level feed hopper of the filter material cleaning device 6. At this time, the filter material lifting pipeline 17 descends to a low position, and the discharge end of the filter material lifting pipeline is docked with the first-level feed hopper 62. The filter material cleaned by the filter material cleaning device 6 flows from the left discharge trough to the filter material return trough 12, and finally falls back to the top of the pool body. Daily cleaning of filter media in other locations is similar.

[0062] Adding new filter media to the filter tank from the next filter tank or from the outside through a pipeline is considered as adding new filter media. When adding new media, the secondary feed hopper 63 of the filter media cleaning device 6 rises through the lifting push rod 65, and the secondary feed hopper is connected to the filter media adding valve 11. Then the filter media cleaning device 6 is started and the filter media adding valve 11 is opened. The cleaned filter media enters the filter tank body 1 through the discharge trough 64 and the filter media return trough 12.

[0063] When the filter material of the filter tank is activated carbon, it has two functions: adsorption and filtration. After a certain period of use, the activated carbon will reach a saturated state of adsorption. At this time, the activated carbon filter material needs to be discharged from the tank, which is the waste discharge operation. When there are multiple levels of filter tanks, only the first level filter tank has a waste discharge operation. The waste discharged from the next level filter tank is discharged to the previous level and is the "new material" of the previous level.

[0064] When discharging waste, the filter media cleaning device 6 runs to the filter tank position where waste needs to be discharged, and the electric push rod 57 pushes the hollow push rod 55 upward to connect with the air circuit docking valve 42, and the compressed air is connected to the equipment; the "filter media cleaning / external discharge switching valve 23" is opened to the external discharge position, and the filter media external discharge valve 24 corresponding to the filter tank is opened at the same time, and then the filter media lifting pipeline 17 is lowered, the top pipe 18 at the bottom of the pipeline is pressed down, the deep water valve 28 is opened, and then the air lift inlet valve 21 is opened, and the filter media is discharged out of the pool through the filter media lifting pipeline 17, the filter media cleaning / external discharge switching valve 23, the external discharge road, the filter media external discharge valve 24, and the filter media external discharge pipeline 25.

Claims

1. A filter tank with a common filter material lifting pipeline and a filter material cleaning device, comprising a plurality of tank bodies arranged in parallel, the tank bodies being arranged in rows and columns, and having at least two rows; characterized in that: A set of tracks is laid above every two rows of pool bodies, and the tracks are located in the middle of the two rows of pool bodies; a filter material cleaning device is placed on the track, and a power component is provided on the filter material cleaning device to drive the filter material cleaning device to move along the track above the pool body; a filter material lifting pipeline that can be raised and lowered is provided on the filter material cleaning device, and a top pipe is provided below the filter material lifting pipeline, and a feed port is provided on the side of the top pipe; deep water valves are provided on the opposite sides of the two rows of pool bodies, and a movable piston is provided in the deep water valve, and a sealing block that seals with the discharge port of the deep water valve is provided on the top of the piston; the top pipe below the filter material lifting pipeline can be inserted into the deep water valve, and the piston is pressed down to connect the pool body and the filter material lifting pipeline; A pipe rack is provided above the filter material cleaning device, and lifting cylinders are provided on both sides of the filter material cleaning device. The cylinder rods of the lifting cylinders are connected to the pipe rack, and the lifting cylinders drive the pipe rack to move up and down; a pipeline guide rack is installed below the filter material cleaning device, and a pipeline guide ring is provided on the pipeline guide rack. The filter material lifting pipeline is fixedly installed on the pipeline rack above, and the filter material lifting pipeline passes through multiple pipeline guide rings below to perform lifting and lowering movements; The deepwater valve comprises an upper valve chamber, a mounting plate and a lower valve chamber, wherein a conical guide tube is mounted on the upper end of the upper valve chamber, and the lower end of the lower valve chamber is an inlet end; the mounting plate is placed between the upper and lower valve chambers, a piston cylinder is fixed on the mounting plate, the piston is placed in the piston cylinder and can move relative to the piston cylinder, a sealing block at the top of the piston is sealed with the pipe opening of the guide tube, and a first spring is provided between the piston and the piston cylinder; A sealing tube is arranged above the guide tube, a conical guide block is arranged above the feed port of the jacking tube, a sealing ring is arranged on the guide block, and when the jacking tube is inserted into the upper valve cavity from the guide tube, the sealing ring on the guide block fits tightly with the sealing tube.

2. A filter tank with a common filter material lifting pipeline and filter material cleaning device as claimed in claim 1, characterized in that: A water inlet distribution channel is arranged between each two rows of pool bodies, and a deep water valve is arranged at the bottom of the water inlet distribution channel and is respectively connected to the bottom of one of the pool bodies.

3. A filter tank with a common filter material lifting pipeline and filter material cleaning device as claimed in claim 1, characterized in that: The filter media lifting pipeline is installed on the pipe rack.

4. A filter tank with a common filter material lifting pipeline and filter material cleaning device as claimed in claim 1, characterized in that: The feed end of the filter material cleaning device is provided with two primary feed hoppers and one secondary feed hopper, and a lifting push rod is provided below the secondary feed hopper to drive the secondary feed hopper to rise and fall; when the filter material lifting pipeline is lowered to be connected with the deep water valve, the discharge end of the filter material lifting pipeline is connected with the primary feed hopper; a filter material adding valve is provided above the filter material cleaning device, and the secondary feed hopper can rise to be connected with the filter material adding valve.

5. The filter tank with a common filter material lifting pipeline and filter material cleaning device as claimed in claim 1, characterized in that: An air lift device is also installed below the filter material lifting pipeline, the top pipe is located below the air lift device, and above the air lift device is a discharge pipe. A switching valve is provided on the discharge pipe, and the switching valve is divided into two routes, one is a cleaning branch connected to the first-level feed hopper, and the other is an external discharge branch connected to the filter material external discharge valve arranged on the side of the track; the air lift device is connected to the air intake valve through an air intake pipe.

6. A filter tank with a common filter material lifting pipeline and filter material cleaning device as claimed in claim 1, characterized in that: A plurality of cleaning stations are arranged on the track, corresponding to each pool body; a compressed air pipe is arranged above the track, and a plurality of air circuit docking valves are arranged on the compressed air pipe, corresponding to the positions of the cleaning stations; the air circuit docking valve comprises a valve body and a valve core, the valve core is arranged in the valve body, the upper part of the valve body is an air inlet chamber, and the lower part of the valve body is a guide sleeve; the valve core is arranged in the middle part of the valve body, and a second spring is arranged above the valve core; a hollow push rod and an electric push rod for driving the hollow push rod to rise and fall are arranged on the filter material cleaning device, and the side of the hollow push rod is connected to the air outlet pipe; when the filter material cleaning device moves to any cleaning station, the hollow push rod moves up to dock with the air circuit docking valve corresponding to the cleaning station, the head of the hollow push rod is inserted into the guide sleeve of the valve body, and the valve core is pushed up to connect the compressed air pipe and the air outlet pipe.

7. A filter tank with a common filter material lifting pipeline and filter material cleaning device as claimed in claim 6, characterized in that: The valve core is placed in the through hole in the middle of the valve body, and an air inlet channel and an air outlet channel are provided in the valve core. The air inlet channel is connected to the air inlet chamber, and the air outlet channel is connected to the guide sleeve; a first sealing ring is provided on the outer sleeve of the valve core, which is tightly matched with the inside of the through hole in the middle of the valve body. The first sealing ring is located between the air inlet channel and the air outlet channel, separating the air inlet chamber and the guide sleeve.

8. The filter tank with a common filter material lifting pipeline and filter material cleaning device as claimed in claim 1, characterized in that: The filter material cleaning device also includes a cylindrical first screen and a second screen, the first screen and the second screen are coaxially arranged, and the two screens are internally connected, the first screen is connected to the first and second feed hoppers, the second screen is connected to the discharge reversing valve, the discharge reversing valve is connected to two discharge troughs, and the discharge troughs face the pool bodies on both sides respectively; the lower parts of the first screen and the second screen are placed in the water tank, and the first screen and the second screen are fixed with material pushing spiral pieces; a driving component is also provided to drive the first screen and the second screen to roll, the first screen and the second screen roll in their respective water tanks, and the internal material pushing spiral pieces rotate synchronously.

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