Filtration treatment integrated equipment for sand washing wastewater and treatment method of filtration treatment integrated equipment

Abstract

The invention discloses sand washing wastewater filtering treatment integrated equipment and a treatment method thereof, and belongs to the technical field of wastewater treatment.The sand washing wastewater filtering treatment integrated equipment comprises a main filtering box, a storage box and a drainage port and further comprises a main filtering mechanism, and the main filtering mechanism comprises a main filtering cavity formed in the main filtering box; a pressing assembly used for pressing wastewater is arranged on the lower portion in the main filtering cavity, a main filtering assembly used for finely filtering the wastewater is arranged on the upper portion in the main filtering cavity, a mounting hole communicated with the interior of the main filtering cavity is formed in the upper portion of the main filtering box, and an activated carbon filtering block and a secondary filtering mechanism are fixedly mounted in the mounting hole; the secondary filtering mechanism comprises a plurality of secondary filtering assemblies arranged on the outer side of the main filtering box, a pretreatment assembly is arranged on one side of each secondary filtering assembly, and a secondary waste discharging assembly is arranged below each secondary filtering assembly. And the overall filtering effect of the wastewater is poor.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and particularly relates to an integrated device for filtering and treating washing sand wastewater and a treatment method thereof. Background Art

[0002] Washing sand refers to the act of producing construction sand by means of washing, soaking, filtering, desalination, etc. for sea sand, mountain sand, silt, construction waste, etc. The sand and gravel materials obtained after washing sand are mainly used in concrete mixing plants, construction sites, etc. and are the main source of construction sand. As an important part of building materials such as concrete, washing sand plays a key role in the stability and durability of buildings.

[0003] A large amount of washing sand wastewater is produced during the process of washing sand. This kind of wastewater contains a large amount of particulate impurities and usually needs to be filtered to meet the discharge standard in order to avoid affecting the environment. Currently, the filtering and treatment method for washing sand wastewater mostly uses a filtering device for filtration. It can intercept impurities in the wastewater through a filter screen to achieve the purpose of filtering the wastewater. However, there are still some common problems. Although it can filter the wastewater, its filtering efficiency is affected by the opening size of the filter screen. When the opening is too small, its filtering efficiency is relatively low and cannot meet the requirement of quickly filtering and treating a large amount of wastewater. Moreover, its filtering effect is poor and cannot ensure the removal of most impurities in the wastewater, thus affecting the overall filtering effect of the washing sand wastewater. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the invention provides an integrated device for filtering and treating washing sand wastewater and a treatment method thereof, which have the advantages of high filtering efficiency and good filtering effect, and solve the problems that the filtering efficiency of the existing washing sand wastewater filtering and treatment device is low due to the influence of the opening size of the filter screen and the overall filtering effect of the wastewater is poor.

[0005] The present invention is implemented as follows. An integrated device and its treatment method for filtering and treating sand washing wastewater include a main filtration tank. One side of the main filtration tank is fixedly connected to a storage tank, and one side of the storage tank is fixedly connected to a drain port. It also includes a main filtration mechanism. The main filtration mechanism includes a main filtration chamber opened inside the main filtration tank. Below the main filtration chamber, there is a pressing component for pressing the wastewater, and above the main filtration chamber, there is a main filtration component for finely filtering the wastewater. An installation hole communicating with the inside of the main filtration chamber is opened above the main filtration tank, and an activated carbon filter block is fixedly installed in the installation hole. There is also a secondary filtration mechanism. The secondary filtration mechanism includes a plurality of secondary filtration components arranged outside the main filtration tank for roughly filtering the pretreated wastewater. One side of the secondary filtration component is provided with a pretreatment component for pretreating the wastewater, and below the secondary filtration component, there is a secondary waste discharge component for discharging the roughly filtered impurities.

[0006] Preferably, the secondary filtration component includes a secondary filtration tank fixedly connected to one side of the main filtration tank. A secondary filtration chamber is opened inside the secondary filtration tank. A secondary filter screen is arranged inside the secondary filtration chamber. An installation frame is fixedly connected above the secondary filtration tank, and a first hydraulic push rod is fixedly connected above the installation frame. The output end of the first hydraulic push rod extends into the secondary filtration chamber and is fixedly connected to the secondary filter screen. Above the secondary filtration tank, there is a conveying unit for conveying the wastewater filtered out in the secondary filtration chamber into the main filtration chamber.

[0007] Preferably, the conveying unit includes an elastic tube fixedly connected to the upper surface of the secondary filtration chamber. A first water pump is fixedly connected above the secondary filtration tank. The first water pump is communicated with one end of the elastic tube. The other end of the elastic tube is fixedly connected to the outside of the output end of the first hydraulic push rod. The end of the first water pump away from the elastic tube is communicated with the inside of the main filtration chamber through a pipeline.

[0008] Preferably, the pretreatment component includes a pretreatment tank fixedly connected to the side of the secondary filtration tank away from the main filtration tank. A pretreatment chamber is opened inside the pretreatment tank, and a pre-filter screen is detachably installed in the pretreatment chamber.

[0009] Preferably, a second water pump fixedly connected to one side of the pretreatment tank and communicated with the inside of the pretreatment chamber. The end of the second water pump away from the pretreatment tank is communicated with the inside of the secondary filtration chamber through a pipeline. Support legs for supporting the equipment are fixedly connected below the pretreatment tank.

[0010] Preferably, in the present invention, the secondary waste discharging assembly includes a mounting ring fixedly connected below the pretreatment tank. A rotating plate is rotatably connected inside the mounting ring. The rotating plate is sleeved outside the main filtration tank, and an internal gear ring is fixedly connected below the rotating plate. A support plate is fixedly connected below the mounting ring, and a first motor is fixedly connected above the support plate. The output end of the first motor is fixedly connected with a driving gear, and the driving gear meshes with the internal gear ring. Waste discharging ports corresponding to each other are formed on the rotating plate and below the secondary filtration tank. A diversion plate corresponding to the position of the waste discharging port is fixedly connected below the rotating plate. An arc-shaped conveyor belt for conveying coarse-filtered impurities is arranged below the mounting ring.

[0011] Preferably, in the present invention, the main filtration assembly includes a filtration rack slidably arranged inside the main filtration chamber. A second hydraulic push rod is fixedly connected above the main filtration tank, and the output end of the second hydraulic push rod extends into the main filtration chamber and is fixedly connected with the filtration rack. A number of main filtration blocks for finely filtering wastewater are fixedly installed inside the filtration rack. A sliding groove is formed at the center of the filtration rack, and a closing block is slidably connected inside the sliding groove. A first spring is arranged inside the sliding groove, and two ends of the first spring are respectively fixedly connected with the lower end of the closing block and the bottom surface of the sliding groove.

[0012] Preferably, in the present invention, the pressing assembly includes a conical sleeve fixedly connected below the main filtration tank. A push rod rack is fixedly connected inside the conical sleeve, and a third hydraulic push rod is fixedly connected to the push rod rack. The output end of the third hydraulic push rod is fixedly connected with a motor rack, and a second motor is fixedly connected inside the motor rack. The output end of the second motor extends above the motor rack. A pressing plate is slidably arranged inside the main filtration chamber, and the lower part of the pressing plate is fixedly connected with the output end of the second motor. A straight conveyor belt for conveying finely filtered impurities is arranged below the conical sleeve.

[0013] Preferably, in the present invention, a cross groove is formed above the pressing plate, and a cross slider is slidably connected inside the cross groove. A number of second springs are arranged inside the cross groove, and two ends of the second spring are respectively fixedly connected with the lower part of the cross slider and the bottom surface of the cross groove.

[0014] A method for filtering and treating sand washing wastewater includes the following steps: First, pour the wastewater into the pretreatment assembly to remove oversized impurities in the wastewater through the pretreatment assembly, and convey the pretreated wastewater to the secondary filtration assembly; The wastewater transported into the secondary filtration component is first statically settled to make the impurities in the wastewater sink to the bottom of the secondary filtration component. Then, the secondary filtration component conducts a rough filtration on the wastewater to further remove the impurities in the wastewater, and transports the wastewater after the rough filtration into the main filtration chamber. After the wastewater is completely transported into the main filtration chamber, the impurities filtered out by the rough filtration are discharged through the secondary waste discharge component; The wastewater transported into the main filtration chamber is located between the main filtration component and the pressing component. First, it is necessary to push the wastewater in the main filtration chamber gradually closer to the main filtration component through the pressing component, so that the wastewater can be quickly and finely filtered by the main filtration component. While the pressing component is pushing the wastewater, the clear water filtered out by the main filtration component will be finally filtered by the activated carbon filter block as the filtered clear water continuously increases and then discharged into the storage tank and discharged through the drain port. After the wastewater filtration is completed, the pressing component will discharge the impurities produced by the fine filtration.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention uses the pretreatment component and the secondary filtration component to achieve the pretreatment and rough filtration of wastewater, thereby removing the oversized impurities in the wastewater before the fine filtration, and effectively improving the filtration effect of the equipment.

[0016] 2. The present invention uses the main filtration component and the pressing component, and can quickly conduct a fine filtration on the wastewater by pressing, thereby effectively improving the filtration efficiency of the equipment.

[0017] 3. The present invention is provided with several secondary filtration components, which can alternately statically settle the wastewater during use, so as to ensure that the main filtration component can continuously filter the wastewater, and further improve the filtration efficiency of the equipment.

[0018] 4. The present invention uses the cooperation of the rotating plate and the secondary filter screen to enable the equipment to automatically and effectively discharge the rough filtration impurities, thereby effectively improving the convenience and use effect of the equipment.

[0019] 5. The present invention uses the rotational movement of the pressing plate to achieve the automatic cleaning of the filtered impurities. At the same time, by setting the sealing block and the second hydraulic push rod, and using the backflow of a small amount of clear water to conduct a reverse cleaning on the main filter block, the blockage of the main filter block can be effectively avoided, and further improve the filtration efficiency and filtration effect of the equipment.

[0020] 6. The present invention uses the cross slider to divide and clean the filtered impurities squeezed into a cake shape, thereby effectively improving the cleaning effect of the filtered impurities and ensuring the efficient operation of the equipment. Brief Description of the Drawings

[0021] Figure 1 is the structural schematic diagram provided by the embodiment of the present invention; Figure 2It is a schematic structural diagram from another perspective provided by an embodiment of the present invention; Figure 3 It is a full left-sectional view provided by an embodiment of the present invention; Figure 4 It is provided by an embodiment of the present invention Figure 3 The partial enlarged view at A in; Figure 5 It is provided by an embodiment of the present invention Figure 3 The partial enlarged view at B in; Figure 6 It is a full front-sectional view provided by an embodiment of the present invention; Figure 7 It is provided by an embodiment of the present invention Figure 6 The partial enlarged view at C in; Figure 8 It is a schematic structural diagram below the secondary filter box provided by an embodiment of the present invention; Figure 9 It is a schematic structural diagram of the cooperation of the secondary filter screen provided by an embodiment of the present invention; Figure 10 It is a schematic structural diagram of the main filter assembly provided by an embodiment of the present invention; Figure 11 It is a schematic structural diagram of the pressing assembly provided by an embodiment of the present invention; Figure 12 It is a schematic structural diagram of the secondary waste discharge assembly provided by an embodiment of the present invention.

[0022] In the figure: 1. Main filter box; 2. Storage box; 3. Drainage port; 4. Activated carbon filter block; 5. Secondary filter box; 6. Secondary filter screen; 7. Mounting frame; 8. First hydraulic push rod; 9. Elastic tube; 10. First water pump; 11. Pretreatment box; 12. Prefilter screen; 13. Second water pump; 14. Support leg; 15. Mounting ring; 16. Rotating plate; 17. Internal gear ring; 18. Support plate; 19. First motor; 20. Driving gear; 21. Deflector; 22. Arc-shaped conveyor belt; 23. Filter rack; 24. Second hydraulic push rod; 25. Main filter block; 26. Sealing block; 27. First spring; 28. Conical sleeve; 29. Push rod frame; 30. Third hydraulic push rod; 31. Motor frame; 32. Second motor; 33. Pressing plate; 34. Straight conveyor belt; 35. Cross slider; 36. Second spring. Detailed implementation manners

[0023] To further understand the content, features and effects of the present invention, the following embodiments are exemplified and described in detail with reference to the accompanying drawings as follows.

[0024] The structure of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] Reference Figures 1 to 12, an integrated equipment and its treatment method for filtering and treating washing sand wastewater provided by an embodiment of the present invention, including a main filtration tank 1, a storage tank 2 fixedly connected to one side of the main filtration tank 1, a drain port 3 fixedly connected to one side of the storage tank 2, and further including a main filtration mechanism. The main filtration mechanism includes a main filtration chamber opened inside the main filtration tank 1. A pressing assembly for pressing the wastewater is arranged below the main filtration chamber, and a main filtration assembly for finely filtering the wastewater is arranged above the main filtration chamber. An installation hole communicating with the inside of the main filtration chamber is opened above the main filtration tank 1, and an activated carbon filtration block 4 is fixedly installed in the installation hole. A secondary filtration mechanism, the secondary filtration mechanism includes a plurality of secondary filtration components arranged outside the main filtration tank 1 for coarsely filtering the pretreated wastewater. A pretreatment component for pretreating the wastewater is arranged on one side of the secondary filtration component, and a secondary waste discharge component for discharging the coarsely filtered impurities is arranged below the secondary filtration component.

[0026] When it is necessary to filter and treat the washing sand wastewater, first pour the wastewater into the pretreatment component. The pretreatment component will pretreat the wastewater, thereby removing the oversized impurities in the wastewater and conveying the pretreated wastewater to the secondary filtration component.

[0027] The wastewater conveyed into the secondary filtration component is first statically precipitated, so that the impurities in the wastewater sink to the bottom of the secondary filtration component. After the static precipitation is completed, the secondary filtration component will coarsely filter the wastewater, thereby further removing the impurities in the wastewater. The wastewater after the coarse filtration will be conveyed into the main filtration chamber, and the impurities filtered out by the coarse filtration will be discharged by the secondary waste discharge component.

[0028] The wastewater conveyed into the main filtration chamber is located between the main filtration component and the pressing component. The pressing component will push the wastewater in the main filtration chamber to gradually approach the main filtration component, so that the wastewater can be quickly and finely filtered through the main filtration component by the pushing pressure, and then the wastewater is filtered into qualified clear water. While the pressing component presses the wastewater, the clear water filtered out by the main filtration component will be finally filtered through the activated carbon filtration block 4 as the filtered clear water continuously increases and then discharged into the storage tank 2 and discharged through the drain port 3. After the wastewater filtration is completed, the pressing component will discharge the impurities produced by the fine filtration.

[0029] Through this setting, the pretreatment component and the secondary filtration component can be used to realize the pretreatment and coarse filtration of the wastewater, thereby removing the oversized impurities in the wastewater before the fine filtration, effectively improving the filtration effect of the equipment. By using the main filtration component and the pressing component, the wastewater can be quickly and finely filtered by pressing, effectively improving the filtration efficiency of the equipment. And because there are a plurality of secondary filtration components, the wastewater can be statically precipitated alternately during use, so as to ensure that the main filtration component can continuously filter the wastewater, and further improve the filtration efficiency of the equipment.

[0030] Further, the secondary filtration component includes a secondary filtration tank 5 fixedly connected to one side of the main filtration tank 1. A secondary filtration chamber is provided inside the secondary filtration tank 5, and a secondary filter screen 6 is arranged inside the secondary filtration chamber. An installation frame 7 is fixedly connected above the secondary filtration tank 5, and a first hydraulic push rod 8 is fixedly connected above the installation frame 7. The output end of the first hydraulic push rod 8 extends into the secondary filtration chamber and is fixedly connected to the secondary filter screen 6. A conveying unit for conveying the wastewater filtered out in the secondary filtration chamber to the main filtration chamber is arranged above the secondary filtration tank 5. The conveying unit includes an elastic tube 9 fixedly connected to the upper surface of the secondary filtration chamber. A first water pump 10 is fixedly connected above the secondary filtration tank 5. The first water pump 10 is communicated with one end of the elastic tube 9. The other end of the elastic tube 9 is fixedly connected to the outside of the output end of the first hydraulic push rod 8. One end of the first water pump 10 away from the elastic tube 9 is communicated with the inside of the main filtration chamber through a pipeline.

[0031] The pretreated wastewater is conveyed into the secondary filtration chamber and is located below the secondary filter screen 6. Then, the wastewater is allowed to stand. After the standing is completed, the first hydraulic push rod 8 will push the secondary filter screen 6 and the elastic tube 9 to move downward away from one end of the first water pump 10. At the same time, the first water pump 10 will be started. While the secondary filter screen 6 is descending, it will conduct rough filtration on the wastewater in the secondary filtration chamber. The roughly filtered wastewater will directly be discharged into the main filtration chamber through the elastic tube 9 and the first water pump 10. After all the wastewater is roughly filtered and the roughly filtered wastewater is all discharged into the main filtration chamber, the first water pump 10 is turned off, and at the same time, the secondary waste discharge component is started. At this time, the roughly filtered impurities located below the secondary filter screen 6 will be pushed into the secondary waste discharge component and discharged as the secondary filter screen 6 continues to move downward. Then, the secondary filter screen 6 can be reversely driven to reset. Through this setting, the secondary filter screen 6 can be used to conduct rough filtration on the wastewater before fine filtration, thereby effectively removing the too large impurities in the wastewater, and further effectively improving the filtration effect and filtration efficiency of the equipment.

[0032] Further, the pretreatment component includes a pretreatment tank 11 fixedly connected to the side of the secondary filtration tank 5 away from the main filtration tank 1. A pretreatment chamber is provided inside the pretreatment tank 11, and a pre-filter screen 12 is detachably installed inside the pretreatment chamber. A second water pump 13 communicated with the inside of the pretreatment chamber is fixedly connected to one side of the pretreatment tank 11. One end of the second water pump 13 away from the pretreatment tank 11 is communicated with the inside of the secondary filtration chamber through a pipeline. Support legs 14 for supporting the equipment are fixedly connected below the pretreatment tank 11.

[0033] When it is necessary to filter wastewater, the wastewater is directly poured into the pretreatment tank 11. The wastewater will be filtered by the pre-filter screen 12, thereby blocking the too large impurities in the wastewater and avoiding the influence of the too large impurities on the transportation and subsequent filtration of the wastewater. The pretreated wastewater will be discharged into the secondary filtration chamber through the second water pump 13. The larger impurities intercepted by the pre-filter screen 12 can be cleaned by disassembling and installing the pre-filter screen 12. Through this setting, the filtration effect of the wastewater can be further improved, and the high-quality filtration of the equipment can be guaranteed.

[0034] Further, the secondary waste discharge assembly includes a mounting ring 15 fixedly connected to the lower part of the pretreatment tank 11. A rotating plate 16 is rotatably connected in the mounting ring 15. The rotating plate 16 is sleeved outside the main filtration tank 1. And a internal gear ring 17 is fixedly connected to the lower part of the rotating plate 16. A support plate 18 is fixedly connected to the lower part of the mounting ring 15. A first motor 19 is fixedly connected to the upper part of the support plate 18. The output end of the first motor 19 is fixedly connected with a driving gear 20. The driving gear 20 meshes with the internal gear ring 17. Waste discharge ports are opened on the rotating plate 16 and below the secondary filtration tank 5 in a corresponding manner. A guide plate 21 corresponding to the position of the waste discharge port is fixedly connected to the lower part of the rotating plate 16. An arc-shaped conveyor belt 22 for conveying the coarsely filtered impurities is arranged below the mounting ring 15.

[0035] When the wastewater in the secondary filtration chamber is in a static and coarsely filtered state, the waste discharge port on the rotating plate 16 is staggered from the waste discharge port below the secondary filtration tank 5, and the lower part of the secondary filtration chamber is closed by the rotating plate 16. When the wastewater in the secondary filtration chamber is completely coarsely filtered and the coarsely filtered wastewater is completely discharged into the main filtration chamber, start the first motor 19, which will drive the driving gear 20 to rotate, thereby driving the internal gear ring 17 to drive the rotating plate 16 to rotate, so that the waste discharge port on the rotating plate 16 corresponds to the waste discharge port below the secondary filtration tank 5, so that the coarsely filtered impurities are pushed by the secondary filter screen 6 and fall onto the arc-shaped conveyor belt 22 (it is driven by a motor to move the conveyor belt, which is the same as the prior art, so it will not be elaborated here) through the waste discharge port and the guide plate 21 and are discharged. After the coarsely filtered impurities are completely discharged, the secondary filter screen 6 and the rotating plate 16 can be driven to reset, so as to close the lower part of the secondary filtration tank 5 again for another coarse filtration. Through this setting, the rotating plate 16 and the secondary filter screen 6 can be used in cooperation, so that the equipment can automatically and effectively discharge the coarsely filtered impurities, thereby effectively improving the convenience and use effect of the equipment.

[0036] Further, the main filtering component includes a filtering rack 23 slidably disposed inside the main filtering chamber. A second hydraulic push rod 24 is fixedly connected above the main filtering box 1. The output end of the second hydraulic push rod 24 extends into the main filtering chamber and is fixedly connected to the filtering rack 23. A number of main filtering blocks 25 for finely filtering wastewater are fixedly installed inside the filtering rack 23. A sliding groove is formed at the center of the filtering rack 23. A closing block 26 is slidably connected inside the sliding groove. A first spring 27 is disposed inside the sliding groove. Two ends of the first spring 27 are respectively fixedly connected to the lower end of the closing block 26 and the bottom surface of the sliding groove. The pressing component includes a conical sleeve 28 fixedly connected below the main filtering box 1. A push rod frame 29 is fixedly connected inside the conical sleeve 28. A third hydraulic push rod 30 is fixedly connected to the push rod frame 29. The output end of the third hydraulic push rod 30 is fixedly connected to a motor frame 31. A second motor 32 is fixedly connected inside the motor frame 31. The output end of the second motor 32 extends above the motor frame 31. A pressing plate 33 is slidably disposed inside the main filtering chamber. The lower side of the pressing plate 33 is fixedly connected to the output end of the second motor 32. A straight conveyor belt 34 for conveying finely filtered impurities is disposed below the conical sleeve 28.

[0037] The wastewater conveyed to the main filtration chamber is located between the pressing plate 33 and the filtration rack 23. In the initial state, there is a predetermined distance between the upper part of the sealing block 26 and the upper surface of the main filtration chamber, and the pressing plate 33 is located at the bottom of the main filtration chamber. When it is necessary to finely filter the wastewater inside the main filtration chamber, the third hydraulic push rod 30 is started, which will drive the second motor 32 and the pressing plate 33 to move upward, thereby applying pressure to the wastewater to make it pass through the main filtration block 25 for filtration. The clear water generated by the filtration is located above the main filtration block 25. As the clear water continuously increases, the clear water will be further filtered by the activated carbon filtration block 4 and then discharged into the storage tank 2. When the wastewater is completely filtered, the impurities generated by the filtration are squeezed between the pressing plate 33 and the filtration rack 23. Then, the pressing plate 33 is driven to move downward by the third hydraulic push rod 30, and the filtered impurities will fall above the pressing plate 33 and move downward with the pressing plate 33. When the pressing plate 33 moves into the conical sleeve 28, the second motor 32 is started, which will drive the pressing plate 33 to rotate, so that the impurities located above the pressing plate 33 are discharged through the conical sleeve 28 onto the upper surface of the straight conveyor belt 34 (the conveyor belt is driven by a motor to move, which is the same as the prior art, so it will not be elaborated here). Then, the pressing plate 33 is driven to reset to the initial position. Since there is a predetermined distance between the upper part of the sealing block 26 and the upper surface of the main filtration chamber, there is still a small amount of clear water above the filtration rack 23 that has not been discharged through the activated carbon filtration block 4. At this time, the second hydraulic push rod 24 is started, which will drive the filtration rack 23 and the sealing block 26 to move upward. When the sealing block 26 fits with the upper surface of the main filtration chamber, it seals the activated carbon filtration block 4. At this time, as the filtration rack 23 continues to move upward, the sealing block 26 will compress the first spring 27 downward, and the clear water that cannot be discharged through the activated carbon filtration block 4 will move from above the main filtration block 25 to below the main filtration block 25 in the reverse direction. During this process, the clear water flowing back in the reverse direction will clean the impurities remaining during the filtration process of the main filtration block 25 in the reverse direction. Through this setting, the pressing plate 33 and the main filtration block 25 can be used to quickly finely filter the wastewater, and the automatic cleaning of the filtered impurities can be realized through the rotational movement of the pressing plate 33. At the same time, by setting the sealing block 26 and the second hydraulic push rod 24, the main filtration block 25 is cleaned in the reverse direction by using the reflux of a small amount of clear water, which can effectively prevent the main filtration block 25 from being blocked, thereby further improving the filtration efficiency and filtration effect of the equipment.

[0038] Further, a cross groove is formed above the pressing plate 33, a cross slider 35 is slidably connected in the cross groove, and a plurality of second springs 36 are arranged in the cross groove. The two ends of the second spring 36 are respectively fixedly connected to the lower part of the cross slider 35 and the bottom surface of the cross groove.

[0039] When the pressing plate 33 moves upward, the upper part of the cross slider 35 will first contact the lower surface of the filter rack 23 and compress the second spring 36. After the wastewater is finely filtered, as the pressing plate 33 moves downward, the cross slider 35 will extend under the push of the second spring 36, so as to divide the filtered impurities extruded into a cake shape, which is convenient for subsequent centrifugal cleaning of the filtered impurities. When the pressing plate 33 descends a predetermined distance, at this time, the upper part of the cross slider 35 still contacts the lower part of the filter rack 23, then the third hydraulic push rod 30 is closed, and the second motor 32 is turned on. The second motor 32 will drive the cross slider 35 to rotate through the pressing plate 33, so as to clean the residual filtered impurities remaining under the filter rack 23 and the main filter block 25. After the cleaning is completed, the second motor 32 is turned off, and the third hydraulic push rod 30 is turned on to centrifuge and clean the filtered impurities according to the above principle. Through this setting, the cross slider 35 can be used to divide and clean the filtered impurities extruded into a cake shape, so as to effectively improve the cleaning effect of the filtered impurities and ensure the efficient operation of the equipment.

[0040] A filtering treatment method for washing sand wastewater includes the following steps: First, pour the wastewater into the pretreatment component, remove the oversized impurities in the wastewater through the pretreatment component, and transport the pretreated wastewater to the secondary filtering component; The wastewater transported to the secondary filtering component is first statically precipitated, so that the impurities in the wastewater sink to the bottom of the secondary filtering component, and then the secondary filtering component conducts a rough filtration on the wastewater to further remove the impurities in the wastewater, and transports the wastewater after the rough filtration to the main filtering cavity. After the wastewater is completely transported to the main filtering cavity, the impurities filtered out by the rough filtration are discharged through the secondary waste discharge component; The wastewater transported to the main filtering cavity is located between the main filtering component and the pressing component. First, it is necessary to push the wastewater in the main filtering cavity gradually close to the main filtering component through the pressing component, so that the wastewater can be quickly finely filtered through the main filtering component. While the pressing component pushes the wastewater, the clear water filtered out by the main filtering component will be finally filtered through the activated carbon filter block 4 as the filtered clear water continuously increases and then discharged into the storage tank 2 and discharged through the drain port 3. After the wastewater filtration is completed, the pressing component will discharge the impurities produced by the fine filtration.

[0041] The working principle of the present invention: When treating washing sand wastewater, it is first necessary to introduce it into the pretreatment component, which is responsible for removing the large impurities in the wastewater and transferring the treated wastewater to the secondary filtering component.

[0042] The wastewater entering the secondary filtration component will undergo a static sedimentation process, causing impurities to settle to the bottom. After the static sedimentation is completed, the wastewater will undergo rough filtration to further remove impurities in the wastewater. The wastewater after rough filtration will be sent into the main filtration chamber, and the impurities generated during the rough filtration process will be discharged by the secondary waste discharge component.

[0043] In the main filtration chamber, the wastewater is placed between the main filtration component and the pressing component. The pressing component will apply pressure to push the wastewater closer to the main filtration component, so that the wastewater passes through the main filtration component for fine filtration until the wastewater is filtered into qualified clean water. During the pressing process, the clean water will continuously increase and pass through the activated carbon filter block 4 for final filtration, and then be discharged into the storage tank 2 and flow out through the drain port 3. After the wastewater filtration is completed, the pressing component will discharge the impurities generated by the fine filtration.

[0044] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated device for filtering and treating sand washing wastewater, comprising a main filter box (1), one side of the main filter box (1) is fixedly connected to a storage box (2), one side of the storage box (2) is fixedly connected to a drain port (3), characterized in that: It also comprises a main filtering mechanism, the main filtering mechanism comprising a main filtering chamber opened inside the main filtering box (1), a pressing component for pressing wastewater being arranged at the lower part of the main filtering chamber, a main filtering component for finely filtering wastewater being arranged at the upper part of the main filtering chamber, a mounting hole being opened at the upper part of the main filtering box (1) and communicating with the interior of the main filtering chamber, an activated carbon filtering block (4) being fixedly installed in the mounting hole; A secondary filtering mechanism, the secondary filtering mechanism comprising a plurality of secondary filtering components arranged outside the main filtering box (1) for coarsely filtering the pretreated wastewater, a pretreatment component for pretreating the wastewater being arranged on one side of the secondary filtering component, and a secondary waste discharge component for discharging coarsely filtered impurities being arranged below the secondary filtering component.

2. The integrated equipment for filtering and treating sand washing wastewater according to claim 1, characterized in that: The secondary filter assembly comprises a secondary filter box (5) fixedly connected to one side of the main filter box (1), a secondary filter chamber is provided inside the secondary filter box (5), a secondary filter screen (6) is arranged inside the secondary filter chamber, a mounting frame (7) is fixedly connected above the secondary filter box (5), a first hydraulic push rod (8) is fixedly connected above the mounting frame (7), an output end of the first hydraulic push rod (8) extends into the secondary filter chamber and is fixedly connected to the secondary filter screen (6), and a conveying unit for conveying wastewater filtered out of the secondary filter chamber to the main filter chamber is arranged above the secondary filter box (5).

3. The integrated equipment for filtering and treating sand washing wastewater according to claim 2, characterized in that: The conveying unit comprises an elastic tube (9) fixedly connected to the upper surface of the secondary filter chamber, a first water pump (10) is fixedly connected above the secondary filter box (5), the first water pump (10) is connected to one end of the elastic tube (9), the other end of the elastic tube (9) is fixedly connected to the outside of the output end of the first hydraulic push rod (8), and the end of the first water pump (10) away from the elastic tube (9) is connected to the inside of the main filter chamber through a pipeline.

4. The integrated equipment for filtering and treating sand washing wastewater according to claim 2, characterized in that: The pre-treatment assembly comprises a pre-treatment box (11) fixedly connected to a side of the secondary filter box (5) away from the main filter box (1), a pre-treatment chamber being provided inside the pre-treatment box (11), and a pre-filter screen (12) being detachably installed in the pre-treatment chamber.

5. The integrated equipment for filtering and treating sand washing wastewater according to claim 4, characterized in that: A second water pump (13) communicating with the interior of the pretreatment chamber is fixedly connected to one side of the pretreatment box (11); an end of the second water pump (13) away from the pretreatment box (11) is communicated with the interior of the secondary filtration chamber via a pipeline; and a support leg (14) for supporting the device is fixedly connected to the bottom of the pretreatment box (11).

6. The integrated equipment for filtering and treating sand washing wastewater according to claim 4, characterized in that: The secondary waste discharge assembly comprises a mounting ring (15) fixedly connected to the bottom of the pretreatment box (11), a rotating plate (16) being rotatably connected inside the mounting ring (15), the rotating plate (16) being sleeved on the outside of the main filter box (1), and an inner gear ring (17) being fixedly connected below the rotating plate (16), a support plate (18) being fixedly connected below the mounting ring (15), a first motor (19) being fixedly connected above the support plate (18), a driving gear (20) being fixedly connected to the output end of the first motor (19), the driving gear (20) being meshed with the inner gear ring (17), waste discharge ports corresponding to each other being provided on the rotating plate (16) and below the secondary filter box (5), a guide plate (21) corresponding to the position of the waste discharge port being fixedly connected below the rotating plate (16), and an arc-shaped conveyor belt (22) for conveying coarse filtered impurities being provided below the mounting ring (15).

7. The integrated equipment for filtering and treating sand washing wastewater according to claim 1, characterized in that: The main filter assembly comprises a filter frame (23) slidably arranged inside the main filter chamber, a second hydraulic push rod (24) is fixedly connected to the top of the main filter box (1), an output end of the second hydraulic push rod (24) extends into the main filter chamber and is fixedly connected to the filter frame (23), a plurality of main filter blocks (25) for fine filtering of waste water are fixedly installed inside the filter frame (23), a sliding groove is provided at the center of the filter frame (23), a closing block (26) is slidably connected inside the sliding groove, a first spring (27) is arranged in the sliding groove, and two ends of the first spring (27) are respectively fixedly connected to the lower end of the closing block (26) and the bottom surface of the sliding groove.

8. The integrated equipment for filtering and treating sand washing wastewater according to claim 1, characterized in that: The pressing assembly comprises a conical sleeve (28) fixedly connected to the bottom of the main filter box (1); a push rod frame (29) is fixedly connected inside the conical sleeve (28); a third hydraulic push rod (30) is fixedly connected to the push rod frame (29); an output end of the third hydraulic push rod (30) is fixedly connected to a motor frame (31); a second motor (32) is fixedly connected inside the motor frame (31); an output end of the second motor (32) extends above the motor frame (31); a pressing plate (33) is slidably arranged inside the main filter chamber; a lower portion of the pressing plate (33) is fixedly connected to the output end of the second motor (32); and a straight conveyor belt (34) for conveying fine filtered impurities is arranged below the conical sleeve (28).

9. The integrated equipment for filtering and treating sand washing wastewater according to claim 8, characterized in that: A cross groove is provided above the pressing plate (33), a cross slider (35) is slidably connected in the cross groove, a plurality of second springs (36) are arranged in the cross groove, and two ends of the second springs (36) are respectively fixedly connected to the bottom of the cross slider (35) and the bottom surface of the cross groove.

10. A method for filtering and treating sand washing wastewater, characterized in that: The integrated equipment for filtering and treating sand washing wastewater according to any one of claims 1 to 9 comprises the following steps: First, the wastewater is poured into the pre-treatment component, the pre-treatment component removes the excessive impurities in the wastewater, and the pre-treated wastewater is transported to the secondary filtration component; The wastewater transported to the secondary filter assembly is first allowed to settle to allow the impurities in the wastewater to sink to the bottom of the secondary filter assembly, and then the wastewater is coarsely filtered through the secondary filter assembly to further remove the impurities in the wastewater, and the wastewater after coarse filtration is transported to the main filter chamber. After the wastewater is completely transported to the main filter chamber, the impurities filtered out by the coarse filtration are discharged through the secondary waste discharge assembly; The wastewater transported to the main filter chamber is located between the main filter assembly and the pressing assembly. First, the wastewater in the main filter chamber needs to be pushed gradually closer to the main filter assembly by the pressing assembly so that the wastewater can be quickly finely filtered by the main filter assembly. While the pressing assembly is pushing the wastewater, the clean water filtered by the main filter assembly will be discharged into the storage box (2) after the final filtration treatment by the activated carbon filter block (4) as the amount of clean water filtered increases, and then discharged through the drain port (3). After the wastewater filtration is completed, the pressing assembly will discharge the impurities produced by the fine filtration.

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