A wastewater recovery and filtration device and filtration method based on chemical water production

Abstract

The present invention discloses a wastewater recovery and filtration device and a filtration method based on chemical water production, and specifically relates to the field of filtration technology. The wastewater recovery and filtration device based on chemical water production includes a filter tank, and also includes: a plurality of filter units, which are arranged in a circular array in the filter tank to complete the filtration and recovery work. The present invention uses two filter elements to complete multi-stage filtration of wastewater, adopts the design of a control element, can carry the circular filter screen on the filter element to complete the rotation, and completes multiple cleaning actions under the adaptation of a cleaning element and a plurality of cleaning nozzles, without stopping for cleaning. By providing a conversion mechanism, the opening and closing states of each filter unit can be controlled, and each filter unit can complete continuous recovery filtration and cleaning switching. The switching and coordination of multiple filter units avoids the problems of bacterial growth, reduced filtration effect and reduced water output caused by the large amount of waste accumulation, and can complete continuous recovery and filtration operations.

Description

Technical Field

[0001] The invention relates to the technical field of filtration, and in particular to a wastewater recovery filtration device and a filtration method based on chemical water production. Background Art

[0002] Wastewater generated in the chemical water production process usually contains a variety of pollutants and needs to be specially treated before discharge or reuse. These wastewaters mainly come from the loss of raw materials in the chemical production process, incomplete chemical reactions, side reactions, and emissions from specific production processes.

[0003] Impurities such as inorganic salts contained in chemical water production wastewater can be recovered by a variety of methods:

[0004] Physical treatment method: Through filtration, centrifugation and other means, suspended matter, particulate matter and other solid substances in wastewater, including some inorganic salts, can be separated for recycling or further treatment;

[0005] Chemical treatment method: using chemical reactions, such as precipitation, oxidation-reduction, extraction, etc., to convert harmful substances in wastewater into harmless substances, and recover useful components, such as heavy metal ions, inorganic salts, etc. When the wastewater is recovered by physical treatment, a filtration device is required to assist in recovery.

[0006] A bag filter for chemical copper plating wastewater recovery disclosed in a patent application with reference publication number CN116651049A improves the buffering performance of the filter bag under material impact through a buffer component, thereby increasing the service life of the filter bag. The filter bag is squeezed by an extrusion seat acting on the filter bag, so that the filter material in the filter bag shrinks radially inward, making it easier to remove the filter bag from the filter frame.

[0007] At present, filters for wastewater recycling mostly use filter screens, filter bags and other consumables to complete the filtering work. For example, the above-mentioned filter can complete the filtering work by using filter bags, but the filter bags are inconvenient to clean, and impurities accumulate in the filter, which increases the load of the filter, and easily leads to problems such as deterioration of water quality and reduction of water output. In addition, there is the hidden danger of bacterial growth, which can easily cause pollution to water production. Frequent shutdown for maintenance and cleaning is required, and the operation is time-consuming and labor-intensive, making it impossible to perform continuous non-stop filtering and recycling work for water production. Summary of the invention

[0008] The object of the present invention is to provide a wastewater recovery and filtration device and a filtration method based on chemical water production to solve the above-mentioned technical problems.

[0009] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0010] The present invention is a wastewater recovery and filtration device based on chemical water production, comprising a filter tank and also comprising:

[0011] Multiple filter units are arranged in a circular array in the filter tank to complete the filtration recovery work;

[0012] A conversion mechanism is arranged in the filter tank to dynamically switch the filtering states of the multiple filtering units, and the active control operation of the multiple filtering units is completed through the conversion mechanism;

[0013] Multiple cleaning mechanisms are correspondingly assembled in multiple filter units to complete self-cleaning work. Multiple cleaning mechanisms also cooperate with the conversion mechanism to complete follow-up switching control. Each cleaning mechanism is divided into two filter elements and a control element. The two filter elements are arranged at the top and bottom of each unit to complete multi-stage filtration work. The control element is arranged in each filter unit to complete the active cleaning action of the two filter elements.

[0014] Furthermore, each filter unit comprises:

[0015] A filter channel is provided in the filter tank for guiding and conveying the produced water;

[0016] Two sealing rings are symmetrically arranged at the top and bottom of the filter tank, and the two sealing rings are respectively connected to the filter channels of the multiple filter units.

[0017] Furthermore, each filter unit also includes:

[0018] Two ear seats are symmetrically arranged on both sides of the bottom of the filter channel to complete the guidance;

[0019] The sealing bottom plate is arranged at the bottom of the filter channel to complete the plugging operation. Two guide rods are symmetrically installed on both sides of the sealing bottom plate. The two guide rods slide through the two ear seats to complete the guidance;

[0020] A sensing wheel, arranged at one side of the bottom of the sealing bottom plate, for sensing the action of the conversion mechanism;

[0021] The slag discharge channel is connected to the sealing bottom plate to receive and discharge the waste, and the slag discharge pipeline is connected to the waste pipe through a flexible pipeline to complete the waste discharge work.

[0022] Furthermore, the conversion mechanism comprises:

[0023] A switching disk, rotatably arranged on the top of the filter tank, is used for switching between multiple filter units;

[0024] The flow guide area is provided on the switching disk and is coordinated with the filter unit;

[0025] The transmission shaft is fixedly arranged at the center of the lower surface of the switching disk, a No. 1 gear is fixedly sleeved on the outside of the transmission shaft, a conversion motor is installed on the filter tank, and a No. 2 gear meshing with the No. 1 gear is installed at the output end of the conversion motor;

[0026] The switching ring is fixedly arranged at the bottom of the transmission shaft and is used for switching control of the flow status of multiple filter units. An escape area is concavely arranged inwardly on one side of the upper surface of the switching ring.

[0027] Furthermore, the conversion mechanism also includes:

[0028] The circulation area is arranged in the transmission shaft to complete the drainage, and a connecting pipe connected with the cleaning water pipe is rotatably installed at the bottom of the circulation area;

[0029] The annular cavity is rotatably sleeved outside the transmission shaft and is connected with the flow area through a pipeline. A plurality of delivery pipes are arranged in a circular array around the annular cavity.

[0030] Furthermore, the filter element comprises:

[0031] A fixed ring is fixedly arranged in the filter channel, a circular filter screen is detachably installed in the fixed ring, and the circular filter screen and the fixed ring are combined together to form a filter assembly;

[0032] The concentric shaft is fixedly arranged on the circular filter screens of the two filter elements, and the concentric shaft is connected with the control element to complete the driving operation of the circular filter screen. A conveying area is opened through the center of the concentric shaft.

[0033] Furthermore, each filter element comprises:

[0034] A lifting frame is arranged on one side of the top of the fixing ring, and a lifting block is slidably installed in the lifting frame;

[0035] A control spring is arranged between the lifting frame and the lifting block. The control spring pushes the lifting block to move toward the circular filter. A limit column is installed at the bottom of the lifting frame. The limit column limits the downward movement of the lifting block.

[0036] A cleaning chamber is arranged on one side of the lifting block to actively clean the circular filter screen, and a cleaning piece is arranged on one side of the bottom of the cleaning chamber to scrape and clean the circular filter screen through contact between the cleaning piece and the circular filter screen.

[0037] Furthermore, each filter element further comprises:

[0038] An inlet pipe is connected and installed on one side of the top of the cleaning chamber, and the inlet pipe is rotatably connected to the conveying area through a pipeline;

[0039] A plurality of cleaning nozzles are installed in parallel and connected at one side of the bottom of the cleaning chamber, and a plurality of cleaning nozzles are used to clean the circular filter screen in multiple ways through the cleaning piece and the plurality of cleaning nozzles.

[0040] Furthermore, the control element comprises:

[0041] The driving circular cavity is arranged on the upper surface of the sealing bottom plate through a bracket, a top cover is detachably installed on the top of the driving circular cavity, an impeller is rotatably installed in the driving circular cavity, and the top of the impeller is rotatably arranged through the top cover;

[0042] No. 1 pipe, connected and installed on one side of the driving circular cavity;

[0043] The second tube is connected and installed on the other side of the driving circular cavity.

[0044] The present invention also provides a method for recovering and filtering wastewater in chemical water production, and the method specifically comprises the following steps:

[0045] Step 1, controlling the wastewater to be fed into the filter tank;

[0046] Step 2: The wastewater is guided into the corresponding filter unit through the conversion mechanism;

[0047] Step 3: by providing a cleaning mechanism in the filter unit, the wastewater is filtered in multiple stages;

[0048] Step 4: By providing a conversion mechanism, the opening and closing states of each filter unit can be controlled, so that continuous recovery filtration and cleaning switching can be performed between the filter units.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] The present invention provides a cleaning mechanism in the filter channel, uses two filter elements to complete multi-stage filtering of wastewater, ensures filtering accuracy, adopts the design of a control element, can carry the circular filter screen on the filter element to complete rotation, and completes multiple cleaning actions under the adaptation of the cleaning element and multiple cleaning nozzles, can complete automatic cleaning of each filter unit, reduces maintenance difficulty, and does not need to stop the machine for cleaning;

[0051] The present invention is provided with a conversion mechanism, which can control the opening and closing state of each filter unit, so that each filter unit can complete continuous recovery filtration and cleaning switching. At the same time, the switching coordination of multiple filter units is adopted to avoid the problems of bacterial breeding, reduced filtration effect and reduced water output caused by a large amount of waste accumulation, and can complete continuous recovery and filtration operations;

[0052] The present invention is provided with a filtering unit. Since the guide area is arranged corresponding to the avoidance area on the switching ring, when the guide area corresponds to one of the filtering channels, the avoidance area corresponds to the filtering channel in the open state. The design of the avoidance area allows the sensing wheel at the bottom of the filtering channel in the open state to enter the avoidance area. At this time, the sealing bottom plate at the bottom of the filtering channel in the open state moves downward due to gravity, so that the top and bottom of the filtering channel are both in the open state. No external operation control is required, and the opening and closing actions can be completed, thereby reducing the control difficulty.

[0053] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is the overall front view of the present invention;

[0055] Figure 2 It is a schematic diagram of the filter tank of the present invention;

[0056] Figure 3 It is a schematic diagram of multiple filter units in the filter tank of the present invention;

[0057] Figure 4 It is a schematic diagram of the distribution of multiple filtering units of the present invention;

[0058] Figure 5 It is a schematic diagram of the distribution of multiple cleaning mechanisms of the present invention;

[0059] Figure 6 It is a schematic diagram of the distribution of two filter elements of the present invention;

[0060] Figure 7 It is a schematic diagram of the switching mechanism of the present invention;

[0061] Figure 8 It is a schematic diagram of the separation of the switching ring and the multiple sensing wheels of the present invention;

[0062] Fig. 9 It is a schematic diagram of installing two filter elements of the present invention in a filter channel;

[0063] Fig.10 It is a schematic diagram of the distribution of the circular filter screen and the fixing ring of the present invention;

[0064] Fig.11 It is a schematic diagram of the distribution of the cleaning chamber and the circular filter screen of the present invention;

[0065] Fig.12 It is a schematic diagram of the flow area of ​​the present invention being opened on a concentric axis;

[0066] Fig.13 It is a schematic diagram of the distribution of the cleaning nozzles of the present invention on the cleaning chamber;

[0067] Fig.14 It is a schematic diagram of the connection between the cleaning member and the cleaning chamber of the present invention;

[0068] Fig.15 It is a schematic diagram of a control component of the present invention.

[0069] In the figure: 1. filter tank; 2. tank cover; 3. feed pipe; 4. discharge pipe; 5. waste pipe; 6. cleaning water pipe; 7. filter channel; 8. sealing ring; 9. ear seat; 10. sealing bottom plate; 11. guide rod; 12. sensing wheel; 13. slag discharge channel; 14. switching plate; 15. diversion area; 16. transmission shaft; 17. No. 1 gear; 18. conversion motor; 19. No. 2 gear; 20. switching ring; 21. Avoidance area; 22. Flow area; 23. Annular cavity; 24. Delivery pipe; 25. Fixed ring; 26. Circular filter; 27. Concentric shaft; 28. Delivery area; 29. ​​Lifting frame; 30. Lifting block; 31. Control spring; 32. Cleaning cavity; 33. Cleaning piece; 34. Inlet pipe; 35. Cleaning nozzle; 36. Driving circular cavity; 37. Top cover; 38. Impeller; 39. Pipe No. 1; 40. Pipe No. 2. DETAILED DESCRIPTION

[0070] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0071] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0072] Embodiment 1: The present invention provides a technical solution: Figure 1 , Figure 2 and Figure 3 As shown, a wastewater recovery and filtration device based on chemical water production includes a filter tank 1, a tank cover 2 is detachably installed on the top of the filter tank 1 through a buckle, and a plurality of legs are arranged in a circular array at the bottom of the filter tank 1, a feed pipe 3 is connected and installed on one side of the top of the filter tank 1, a discharge pipe 4 is connected and installed on one side of the bottom of the filter tank 1, a waste pipe 5 is connected and installed on one side of the bottom of the filter tank 1, a control valve for controlling the opening and closing of the waste pipe 5 is installed at the end of the waste pipe 5, a cleaning water pipe 6 is connected and installed at one side of the waste pipe 5 at the bottom of the filter tank 1, and a pump body for pumping is installed at the end of the cleaning water pipe 6, and also includes:

[0073] like Figure 4As shown, a plurality of filter units are arranged in a circular array in the filter tank 1 to complete the filtering and recycling work;

[0074] A conversion mechanism is arranged in the filter tank 1 to dynamically switch the filtering states of the multiple filtering units, and the active control operation of the multiple filtering units is completed through the conversion mechanism;

[0075] like Figure 5 As shown, multiple cleaning mechanisms are correspondingly assembled in multiple filter units to complete self-cleaning work. Multiple cleaning mechanisms also cooperate with the conversion mechanism to complete follow-up switching control. Each cleaning mechanism is divided into two filter elements and a control element. The two filter elements are arranged at the top and bottom of each unit to complete multi-stage filtering work. The filter screens on the two filter elements are composed of circular filter screens 26 with different filtering precisions, thereby providing multi-stage filtering with different precisions, which can be freely set according to filtering requirements. The control element is arranged in each filter unit to complete the active cleaning action of the two filter elements;

[0076] like Figure 8 As shown, each filter unit includes:

[0077] The filter channel 7 is arranged in the filter tank 1 for guiding and conveying water production, is circularly arranged, and has an open top and a bottom. The top of the filter channel 7 cooperates with the feed pipe 3 to complete the flow diversion, and the bottom of the filter channel 7 cooperates with the discharge pipe 4 to complete the flow diversion;

[0078] Two sealing rings 8 are symmetrically arranged at the top and bottom of the filter tank 1. The two sealing rings 8 are respectively connected to the filter channels 7 of the multiple filter units. The multiple filter units are connected to the filter tank 1 through the two sealing rings 8.

[0079] Each filter unit also includes:

[0080] Two ear seats 9 are symmetrically arranged on both sides of the bottom of the filter channel 7 to complete the guidance;

[0081] The sealing bottom plate 10 is arranged at the bottom of the filter channel 7 to complete the plugging operation. Two guide rods 11 are symmetrically installed on both sides of the sealing bottom plate 10. The two guide rods 11 slide through the two ear seats 9 to complete the guidance, and a stopper for limiting is installed on the top of the two guide rods 11. The sealing bottom plate 10 can be convex outwardly or concave inwardly toward the filter channel 7, so as to complete the guidance of water production. It can be freely set according to work requirements, and the sealing bottom plate 10 is designed with a counterweight so that the sealing bottom plate 10 can fall smoothly to complete the opening;

[0082] The sensing wheel 12 is arranged at one side of the bottom of the sealing bottom plate 10 and is used to sense the action of the conversion mechanism. Specifically, the sensing wheel 12 is rotatably mounted on the bottom of the sealing bottom plate 10 through a bracket;

[0083] The slag discharge channel 13 is connected to the sealing bottom plate 10 to receive and discharge the waste, and the slag discharge pipe is connected to the waste pipe 5 through a flexible pipe to complete the waste discharge work;

[0084] It is worth noting that: when recycling and filtering, the wastewater is sent into the filter channel 7 through the guide area 15 on the switching disk 14 by means of the filter unit. Since the guide area 15 corresponds to the avoidance area 21 on the switching ring 20, when the guide area 15 corresponds to one of the filter channels 7, the avoidance area 21 corresponds to the filter channel 7 in the open state. The design of the avoidance area 21 allows the sensing wheel 12 at the bottom of the filter channel 7 to enter the avoidance area 21. At this time, the sealing bottom plate 10 at the bottom of the filter channel 7 in the open state is subjected to the gravity. The filter tank 1 is moved downward so that the top and bottom of the filter channel 7 are both in an open state. At the same time, the circular filter screens 26 of the two filter elements are synchronously moved downward through the sealing bottom plate 10 and engaged in the fixing ring 25 to wait for the filtering operation. After that, the waste water enters the filter channel 7 and completes the multi-stage filtering work through the circular filter screens 26 of the two filter elements. After the filtering is completed, the water source flows into the bottom of the filter tank 1 through the separation space between the filter channel 7 and the sealing bottom plate 10, and is finally discharged through the discharge pipe 4 to complete the filtering work. Repeating the above actions can perform continuous filtering work.

[0085] Among them, electrical components such as the conversion motor 18 are connected to switches through wires, and the switches are electrically connected to a controller. The specific structure of the controller is not limited. An absolute encoder is installed on the conversion motor 18 to accurately position the conversion motor 18.

[0086] Embodiment 2: Based on the conversion mechanism provided in Embodiment 1, this embodiment provides a further technical solution of the conversion mechanism.

[0087] like Figure 7 As shown, the conversion mechanism includes:

[0088] A switching disk 14 is rotatably disposed at the top of the filter tank 1 for switching between multiple filter units, and the lower surface of the switching disk 14 is in rotationally sealed contact with multiple filter channels 7 to prevent leakage;

[0089] The guide area 15 is provided through the switching disk 14 and is matched with the filter channel 7 of the filter unit. The guide area 15 is matched with the size of the filter channel 7, and the water is sent into the filter channel 7 through the guide area 15;

[0090] The transmission shaft 16 is fixedly arranged at the center of the lower surface of the switching disk 14, and the transmission shaft 16 is arranged to rotate through the two sealing rings 8, and a first gear 17 is fixedly sleeved on the outside of the transmission shaft 16, and a conversion motor 18 is installed on the sealing ring 8 of the filter tank 1. Specifically, the conversion motor 18 is installed on one side of one of the sealing rings 8 through a bracket, and a second gear 19 meshing with the first gear 17 is installed at the output end of the conversion motor 18;

[0091] The switching ring 20 is fixedly arranged at the bottom of the transmission shaft 16 for switching control of the flow state of multiple filter units. An avoidance area 21 is concavely arranged on one side of the upper surface of the switching ring 20, and both sides of the avoidance area 21 are inclined. The avoidance area 21 is arranged in coordination with the sensing wheel 12. The sensing wheel 12 and the sealing bottom plate 10 are guided downward by the avoidance area 21, and the upper surface of the switching ring 20 is respectively in contact with the sensing wheels 12 of multiple passing units to complete the control. The avoidance area 21 is arranged correspondingly to the guide area 15, so that the filter unit and the cleaning mechanism can operate stably.

[0092] The conversion mechanism also includes:

[0093] The flow area 22 is arranged in the transmission shaft 16 to complete the drainage. Specifically, the flow area 22 is arranged upward from the bottom of the transmission shaft 16, and a connecting pipe connected to the cleaning water pipe 6 is rotatably installed at the bottom of the flow area 22, and the connecting pipe can be replaced by a hard pipe or a flexible pipe.

[0094] The annular cavity 23 is rotatably sleeved outside the transmission shaft 16 and communicated with the circulation area 22 through a pipeline. A plurality of delivery pipes 24 are arranged in a circular array around the annular cavity 23. The number of the plurality of delivery pipes 24 is consistent with the number of the plurality of filter channels 7. A solenoid valve for controlling the on-off of each delivery pipe 24 is installed at the end of each delivery pipe 24.

[0095] It is worth noting that when the filter units are coordinated and converted: by providing a conversion mechanism, since the guide area 15 and the avoidance area 21 are coordinated, the top and bottom of the filter channel 7 can be opened synchronously. When specifically controlling, it is only necessary to control the conversion motor 18, and the transmission shaft 16 is rotated through the meshing transmission of the No. 1 gear 17 and the No. 2 gear 19, and the switching disk 14 and the switching ring 20 connected to the end of the transmission shaft 16 are synchronously switched and rotated, so that the guide area 15 and the avoidance area 21 are synchronously switched to another filter channel 7, and the avoidance area 21 avoids the sensing wheel 12 so that the sealing bottom plate 10 of the corresponding filter channel 7 is opened. After the filter is opened, the filtering operation is continued. The filter channel 7 originally enriched with waste is squeezed and pushed by the avoidance area 21 and the sensing wheel 12, so that the sealing bottom plate 10 moves up to complete the blocking of the filter channel 7. The two circular filter screens 26 are pushed up by the sealing bottom plate 10 and the concentric shaft 27 to form a certain gap with the fixing ring 25, which is beneficial to the subsequent cleaning mechanism to perform cleaning operations. The cooperation of the guide area 15 and the avoidance area 21 can complete the opening and closing operations of multiple filter units, and can cooperate with multiple filter units to complete continuous recovery and filtration operations, thereby improving the recovery and filtration accuracy, ensuring the filtering effect of the filter unit, and reducing the difficulty of maintenance, without the need to stop the machine to replace cleaning consumables.

[0096] Embodiment 3: Based on the cleaning mechanism provided in Embodiment 1, this embodiment provides a further technical solution for the cleaning mechanism.

[0097] like Figure 6 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, the filter element includes:

[0098] The fixing ring 25 is fixedly arranged in the filter channel 7. A circular filter screen 26 is detachably installed in the fixing ring 25. The circular filter screen 26 and the fixing ring 25 are combined into a filter assembly. The top of the fixing ring 25 adopts an inclined transition to facilitate the flow of wastewater. A plurality of filtering through holes are opened through the circular filter screen 26.

[0099] The concentric shaft 27 is fixedly arranged on the circular filter screens 26 of the two filter elements, and the concentric shaft 27 is connected to the control element to complete the driving operation of the circular filter screen 26, and the concentric shaft 27 is arranged to pass through the circular filter screen 26. Specifically, the concentric shaft 27 and the circular filter screen 26 are detachably fixedly connected by bolts, and a conveying area 28 is opened through the center of the concentric shaft 27;

[0100] like Fig.13 and Fig.14 As shown, each filter element includes:

[0101] A lifting frame 29 is arranged on one side of the top of the fixing ring 25, and a lifting block 30 is slidably installed in the lifting frame 29;

[0102] The control spring 31 is arranged between the lifting frame 29 and the lifting block 30. The control spring 31 pushes the lifting block 30 to move toward the circular filter 26. A limit column is installed at the bottom of the lifting frame 29. The limit column limits the downward movement of the lifting block 30. The control spring 31 flexibly controls the lifting block 30 to contact and clean the circular filter 26, thereby improving the cleaning accuracy and avoiding damage to the circular filter 26.

[0103] The cleaning chamber 32 is arranged on one side of the lifting block 30 to actively clean the circular filter 26. In order to maintain the stable contact between the cleaning chamber 32 and the circular filter 26, a travel wheel is rotatably installed on one side of the cleaning chamber 32 through a bracket. The travel wheel contacts the circular filter 26 to maintain the stable cleaning state of the cleaning member 33. A cleaning member 33 is arranged on one side of the bottom of the cleaning chamber 32. The cleaning member 33 contacts the circular filter 26 to complete the scraping cleaning. The cleaning chamber 32 is hollow in design and can receive water. The cleaning member 33 is specifically replaced by a scraper, a brush, or other welding material that can complete the cleaning.

[0104] Each filter also includes:

[0105] The introduction pipe 34 is connected and installed on one side of the top of the cleaning chamber 32, and the introduction pipe 34 is rotatably connected to the conveying area 28 through a pipeline;

[0106] A plurality of cleaning nozzles 35 are installed in parallel and connected at one side of the bottom of the cleaning chamber 32, and the cleaning member 33 and the plurality of cleaning nozzles 35 are used to clean the circular filter 26 in multiple ways;

[0107] like Fig.15 As shown, in the embodiment of the present invention, the control element includes:

[0108] The driving circular cavity 36 is arranged on the upper surface of the sealing bottom plate 10 through a bracket, and the top of the driving circular cavity 36 is open. A top cover 37 is detachably installed on the top of the driving circular cavity 36. An impeller 38 is rotatably installed in the driving circular cavity 36. The top of the impeller 38 is rotatably arranged to pass through the top cover 37, and the top of the impeller 38 is detachably fixedly connected to the bottom of the concentric shaft 27.

[0109] The first pipe 39 is connected and installed on one side of the driving circular cavity 36, and the first pipe 39 is connected with the delivery pipe 24 through a flexible hose;

[0110] The second pipe 40 is connected and installed on the other side of the driving circular cavity 36. The first pipe 39 and the second pipe 40 are both installed with an opening and closing valve to control the opening and closing thereof. The second pipe 40 is connected with the conveying area 28 through a pipeline;

[0111] It is worth noting that when the filter unit is actively cleaned: a cleaning mechanism is provided, which is squeezed and driven by the avoidance area 21 and the sensing wheel 12, so that the bottom sealing bottom plate 10 of the filter channel 7 originally enriched with waste is moved up to complete the blocking, and the two circular filter screens 26 are moved up by the concentric shaft 27 to complete the dislocation separation. When the circular filter screen 26 moves up, the cleaning member 33 is squeezed and pushed, and is pushed by the control spring 31, so that the cleaning member 33 carries a certain pressure and contacts the surface of the circular filter screen 26 to wait for cleaning, and the control spring 31 is used to control the cleaning member 33. The flexible control lifting block 30 contacts and cleans the circular filter screen 26. Similarly, the top of the filter channel 7 rich in waste is blocked by the switching disk 14, so that the filter channel 7 rich in waste remains blocked. Subsequently, the external cleaning liquid is sent into the circulation area 22 through the cleaning water pipe 6, and the delivery pipe 24 of the filter channel 7 to be cleaned is controlled to be opened, so that the cleaning liquid is sent into the No. 1 pipe 39 of the filter channel 7 through the circulation area 22, the annular cavity 23 and the delivery pipe 24. Subsequently, the high-pressure cleaning liquid enters the driving circular cavity 36, and then the high-pressure cleaning liquid pushes The impeller 38 rotates, and at the same time, the high-pressure cleaning liquid is sent out through the No. 2 pipe 40, so that the concentric shaft 27 and the circular filter screen 26 rotate. During the rotation of the circular filter screen 26, the waste accumulated on it can be thrown out and fall through the gap between the circular filter screen 26 and the fixing ring 25. During the rotation of the circular filter screen 26, it can also contact with the cleaning member 33 to complete the scraping cleaning, which further improves the cleaning accuracy. The cleaning liquid sent out through the No. 2 pipe 40 enters the conveying area 28, and then is sprayed out through the cleaning chamber 32 and multiple cleaning nozzles 35 to complete the flushing of the circular filter screen 26, thereby completing the multi-mode cleaning operation of the circular filter screen 26, ensuring the cleaning accuracy of the circular filter screen 26, and a large amount of cleaning liquid can be injected into the filter channel 7 to complete the immersion cleaning, and the type of cleaning liquid can be freely set to sterilizing liquid according to needs. Finally, the cleaned waste liquid is discharged from the filter channel 7 through the slag discharge channel 13 and the waste pipe 5, so that the self-cleaning work is completed, and the subsequent recovery and filtration work can be waited for. The operation is convenient and the operation is stable, and continuous recovery, filtration and cleaning operations can be completed.

[0112] Embodiment 4: A method for recycling and filtering wastewater in chemical water production, the recycling and filtering method specifically comprises the following steps:

[0113] Step 1, controlling the wastewater to be fed into the filter tank 1 through the feed pipe 3;

[0114] Step 2: The wastewater is guided into the corresponding filter channel 7 through the conversion mechanism;

[0115] Step 3: by providing a cleaning mechanism in the filter channel 7, two filter elements are used to perform multi-stage filtration of the wastewater;

[0116] Step 4: By providing a conversion mechanism, the opening and closing states of each filter unit can be controlled, so that continuous recovery filtration and cleaning switching can be performed between the filter units.

[0117] The present invention provides a wastewater recovery and filtration device and a filtration method based on chemical water production. The specific working principle is as follows: first, the feed pipe 3 is connected to the wastewater source, the discharge pipe 4 is connected to the collection source, and the waste pipe 5 is connected to the waste collection source. Then, the wastewater is controlled to be sent into the filter tank 1 through the feed pipe 3, and is sent into the corresponding filter channel 7 under the guidance of the guide area 15 of the conversion mechanism. By arranging a cleaning mechanism in the filter channel 7, two filter elements are used to complete multi-stage filtration of the wastewater, thereby ensuring the filtration accuracy. The design of the control element is adopted, which can carry the circular filter screen 26 on the filter element to complete the rotation, and the cleaning element 33 And with the adaptation of multiple cleaning nozzles 35, multiple cleaning actions can be completed, and each filter unit can be automatically cleaned, which reduces the difficulty of maintenance and does not require shutdown for cleaning. The filter units can work together to complete continuous recovery and filtration work. By providing a conversion mechanism, the opening and closing states of each filter unit can be controlled, so that each filter unit can complete continuous recovery filtration and cleaning switching. At the same time, the switching coordination of multiple filter units avoids the problems of bacterial growth, reduced filtration effect and reduced water output caused by large-scale accumulation of waste, and can complete continuous recovery and filtration operations.

[0118] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0119] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wastewater recovery and filtration device based on chemical water production, comprising a filter tank, characterized in that: Also includes: Multiple filter units are arranged in a circular array in the filter tank to complete the filtration recovery work; A conversion mechanism is arranged in the filter tank to dynamically switch the filtering states of the multiple filtering units, and the active control operation of the multiple filtering units is completed through the conversion mechanism; Multiple cleaning mechanisms are correspondingly assembled in multiple filter units to complete self-cleaning work. Multiple cleaning mechanisms also cooperate with the conversion mechanism to complete follow-up switching control. Each cleaning mechanism is divided into two filter elements and a control element. The two filter elements are arranged at the top and bottom of each unit to complete multi-stage filtering work. The control element is arranged in each filter unit to complete the active cleaning action of the two filter elements; Each filter unit includes: A filter channel is provided in the filter tank for guiding and conveying the produced water; The sealing bottom plate is arranged at the bottom of the filter channel to complete the plugging operation. Two guide rods are symmetrically installed on both sides of the sealing bottom plate. The two guide rods slide through the two ear seats to complete the guidance; A sensing wheel, arranged at one side of the bottom of the sealing bottom plate, for sensing the action of the conversion mechanism; The conversion mechanism includes: A switching disk, rotatably arranged on the top of the filter tank, is used for switching between multiple filter units; The flow guide area is provided on the switching disk and is coordinated with the filter unit; The transmission shaft is fixedly arranged at the center of the lower surface of the switching disk, a No. 1 gear is fixedly sleeved on the outside of the transmission shaft, a conversion motor is installed on the filter tank, and a No. 2 gear meshing with the No. 1 gear is installed at the output end of the conversion motor; A switching ring is fixedly arranged at the bottom of the transmission shaft for switching control of the flow status of multiple filter units, and an escape zone is concavely arranged on one side of the upper surface of the switching ring; The conversion mechanism also includes: The circulation area is arranged in the transmission shaft to complete the drainage, and a connecting pipe connected with the cleaning water pipe is rotatably installed at the bottom of the circulation area; The annular cavity is rotatably sleeved outside the transmission shaft and is connected to the flow area through a pipeline, and a plurality of delivery pipes are arranged in a circular array around the annular cavity; The filter element includes: A fixed ring is fixedly arranged in the filter channel, a circular filter screen is detachably installed in the fixed ring, and the circular filter screen and the fixed ring are combined together to form a filter assembly; The concentric shaft is fixedly arranged on the circular filter screens of the two filter elements, and the concentric shaft is connected with the control element to complete the driving operation of the circular filter screen. A conveying area is opened through the center of the concentric shaft.

2. The wastewater recovery and filtration device based on chemical water production according to claim 1 is characterized by: Each filter unit includes: Two sealing rings are symmetrically arranged at the top and bottom of the filter tank, and the two sealing rings are respectively connected to the filter channels of the multiple filter units.

3. The wastewater recovery and filtration device based on chemical water production according to claim 2 is characterized by: Each filter unit also includes: Two ear seats are symmetrically arranged on both sides of the bottom of the filter channel to complete the guidance; The slag discharge channel is connected to the sealing bottom plate to receive and discharge the waste, and the slag discharge pipeline is connected to the waste pipe through a flexible pipeline to complete the waste discharge work.

4. The wastewater recovery and filtration device based on chemical water production according to claim 3 is characterized by: Each filter element includes: A lifting frame is arranged on one side of the top of the fixing ring, and a lifting block is slidably installed in the lifting frame; A control spring is arranged between the lifting frame and the lifting block. The control spring pushes the lifting block to move toward the circular filter. A limit column is installed at the bottom of the lifting frame. The limit column limits the downward movement of the lifting block. A cleaning chamber is arranged on one side of the lifting block to actively clean the circular filter screen, and a cleaning piece is arranged on one side of the bottom of the cleaning chamber to scrape and clean the circular filter screen through contact between the cleaning piece and the circular filter screen.

5. The wastewater recovery and filtration device based on chemical water production according to claim 4 is characterized by: Each filter also includes: An inlet pipe is connected and installed on one side of the top of the cleaning chamber, and the inlet pipe is rotatably connected to the conveying area through a pipeline; A plurality of cleaning nozzles are installed in parallel and connected at one side of the bottom of the cleaning chamber, and a plurality of cleaning nozzles are used to clean the circular filter screen in multiple ways through the cleaning piece and the plurality of cleaning nozzles.

6. The wastewater recovery and filtration device based on chemical water production according to claim 5, characterized in that: The control includes: The driving circular cavity is arranged on the upper surface of the sealing bottom plate through a bracket, a top cover is detachably installed on the top of the driving circular cavity, an impeller is rotatably installed in the driving circular cavity, and the top of the impeller is rotatably arranged through the top cover; No. 1 pipe, connected and installed on one side of the driving circular cavity; The second tube is connected and installed on the other side of the driving circular cavity.

7. A method for recovering and filtering wastewater from chemical water production, using a wastewater recovery and filtering device for chemical water production as described in any one of claims 1 to 6, characterized in that: The recovery and filtration method specifically comprises the following steps: Step 1, controlling the wastewater to be fed into the filter tank; Step 2: The wastewater is guided into the corresponding filter unit through the conversion mechanism; Step 3: A cleaning mechanism is provided in the filter unit to perform multi-stage filtration on the wastewater; Step 4: By providing a conversion mechanism, the opening and closing states of each filter unit can be controlled, so that continuous recovery filtration and cleaning switching can be performed between the filter units.

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