An industrial high-salinity wastewater recycling pretreatment device

Abstract

The application discloses an industrial high-salinity wastewater recycling pretreatment device, relates to the technical field of high-salinity wastewater treatment, and comprises an inflow pipe and an outflow pipe, two treatment boxes are fixedly connected in common between the inflow pipe and the outflow pipe, and treatment components for treating wastewater are arranged in the two treatment boxes. The treatment components comprise treatment frames which are slidingly connected in the treatment boxes, the inner walls of the treatment frames are detachably connected with filter units one and two, metal fences are fixedly connected in common on the opposite sides of the two treatment boxes, two control rods are rotatably connected to the inner walls of the metal fences, the two control rods are rotatably connected to the inner walls of the inflow pipe and the outflow pipe respectively, valve plates are fixedly connected to the two ends of the two control rods, and the two valve plates located in the inflow pipe and the outflow pipe respectively are staggered. The application ensures that maintenance operation cannot be skipped or forgotten, has high reliability, and is not affected by electrical signal or circuit failure through mechanical forced constraint logic.

Description

Technical Field

[0001] This invention relates to the field of high-salinity wastewater treatment technology, specifically to a pretreatment device for the recycling and reuse of industrial high-salinity wastewater. Background Technology

[0002] High-salinity industrial wastewater mainly originates from the production processes of industries such as chemical, pharmaceutical, printing and dyeing, and steel smelting. It is characterized by complex composition, high salt content, and poor biodegradability; direct discharge will cause serious damage to the aquatic environment. With increasingly stringent national standards for industrial wastewater discharge, the treatment and recycling of high-salinity wastewater has become a key issue in environmental protection. In the pretreatment stage, multi-stage filtration, adsorption, and sedimentation processes are typically used to remove large suspended solids and some dissolved impurities from the wastewater, reducing the load on subsequent advanced treatment processes (such as membrane separation and evaporation crystallization). Among these, the filtration device, as the core unit of pretreatment, requires regular maintenance or replacement of its internal filter components to ensure the stability of the treatment effect and the long-term reliable operation of the equipment.

[0003] Existing technologies have made significant improvements to the maintenance of filtration devices, such as reducing disassembly and assembly difficulty and shortening maintenance time through quick-release structures and pull-out filter frames. However, most improvements still focus on the ease of replacing filter components themselves, and there are still shortcomings in the coordination and control of maintenance and equipment operation time. Specifically, when maintenance of filter components is required, the entire equipment often needs to be shut down and restarted after maintenance, resulting in interruption of the wastewater treatment process and affecting overall treatment efficiency. Even the few self-cleaning methods are extremely inconvenient in daily use because the self-cleaning mechanism inevitably comes into contact with wastewater. Although some solutions attempt to achieve alternating maintenance by setting up backup channels, the control logic of the maintenance process is still relatively weak, lacking an effective mandatory constraint mechanism. This makes it easy for daily management oversights due to operational errors or electrical faults to occur, leading to situations where the equipment is put back into use without timely maintenance, affecting wastewater treatment quality. There is still room for improvement in how to achieve safe, orderly, reliable, and convenient maintenance of existing treatment devices without shutting down the system. Summary of the Invention

[0004] The purpose of this invention is to provide a pretreatment device for recycling industrial high-salt wastewater, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pretreatment device for recycling industrial high-salt wastewater, comprising an inflow pipe and an outflow pipe, wherein the inflow pipe and the outflow pipe are fixedly connected to two treatment tanks, and each of the two treatment tanks is provided with a treatment component for treating wastewater, wherein the treatment component includes a treatment frame slidably connected inside the treatment tank, and the inner wall of the treatment frame is detachably connected to a filter section one and a filter section two;

[0006] The two processing boxes are fixedly connected to a metal enclosure on opposite sides. The inner wall of the metal enclosure is rotatably connected to two control rods. The two control rods are rotatably connected to the inner walls of the inflow pipe and the outflow pipe, respectively. Both ends of the two control rods are fixedly connected to valve plates. The two valve plates located in the inflow pipe and the two valve plates located in the outflow pipe are arranged in an alternating manner.

[0007] The metal enclosure is equipped with a driving component and a switching component. The driving component drives the switching component to move, thereby driving the two control levers to rotate synchronously, and thus synchronously switching the arrangement state of the valve plates in the inflow pipe and the outflow pipe.

[0008] The processing unit also includes two sets of maintenance indicator components. When the processing box is removed from the processing box, the constraint state of the switching component will be changed through the maintenance indicator components to ensure that the switching component can normally drive the valve plate from the closed state to the open state.

[0009] Optionally, the switching component includes two gears, which are respectively fixedly connected to the rod walls of the two control levers. The opposite sides of the two processing boxes are jointly fixedly connected to a limit shaft assembly. The surface of the limit shaft assembly is slidably connected to two rack sets, and the teeth of the two rack sets mesh with the teeth of the two gears respectively.

[0010] Optionally, the maintenance indicator component includes two positioning brackets, both of which are fixedly connected to the side wall of the processing box. A sleeve is fixedly connected to the ends of both positioning brackets. The sleeve is fitted onto the outer wall of the control rod. Rotary cylinder one and rotary cylinder two are rotatably connected to both sides of the sleeve via magnets. Ratchets are provided on the inner walls of both rotary cylinder one and rotary cylinder two, and the directions of the two ratchet teeth are opposite. Two rotating wheels are fixedly connected to the rod wall of the control rod. Notches are provided on the side walls of both rotating wheels. One-way springs are fixedly connected to the surfaces of both notches. A locking plate is fixedly connected to the ends of both one-way springs. The ends of the two locking plates are hinged to the side walls of the two rotating wheels, and the deflection directions of the two locking plates are consistent with the directions of the two ratchet teeth.

[0011] A deflection rod is fixedly connected to the side wall of the first rotating cylinder, and a lace plate is fixedly connected to the side wall of the second rotating cylinder.

[0012] Optionally, the maintenance indicator component further includes a limiting cylinder, which is fixedly connected to the side wall of the processing box. A blocking rod is slidably connected to the inner wall of the limiting cylinder, and the blocking rod is connected to the inner wall of the limiting cylinder by a compression spring. An insertion port is provided on the side wall of the limiting cylinder, and a trigger shaft is slidably connected inside the insertion port. The surface of the trigger shaft is connected to the inner wall of the limiting cylinder by a trigger spring. A retaining shaft is slidably connected to the inner wall of the blocking rod, and the end of the retaining shaft is connected to the inner wall of the blocking rod by a retaining spring. A retaining groove is provided on the inner wall of the limiting cylinder, and the end of the retaining groove near the trigger shaft is inclined.

[0013] Optionally, the maintenance indicator component further includes a hinge shaft fixed to the side wall of the processing frame. The inner wall of the processing box has a sliding groove for the hinge shaft to slide. A connecting rod is rotatably connected to the surface of the hinge shaft. A sliding plate is hinged to the end of the connecting rod. The sliding plate is slidably connected to the inner wall of the processing box. An extrusion plate is fixedly connected to the side wall of the sliding plate. An extrusion groove is provided on the side wall of the processing box for the extrusion plate to slide.

[0014] Optionally, the driving component includes an electromagnetic actuator, which is fixedly connected to the side wall of the processing box. The output end of the electromagnetic actuator is fixedly connected to a driving rod, and the rod wall of the driving rod is fixedly connected to two driving blocks. The surfaces of the two rack groups are fixedly connected to positioning frames, and the two driving blocks are slidably connected in the two positioning frames respectively, and are both connected to the inner wall of the positioning frames through adaptive springs.

[0015] Optionally, the pretreatment device further includes a drainage component, which includes a drainage pipe located below and fixedly connected to the outlet pipe. A drainage valve is rotatably connected to the inner wall of the drainage pipe. A shaft is fixedly connected to the side wall of the drainage valve. The shaft passes through the drainage pipe. A second shaft is fixedly connected to the surface of the valve plate inside the outlet pipe. The second shaft passes through the outlet pipe. The shaft is driven by a bevel gear assembly.

[0016] Optionally, the surface of the metal enclosure is provided with an inspection door, and the processing frame is constrained to ensure stability with the processing box.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] I. When maintenance is required on one side of the treatment channel, the present invention drives the valve plate to switch synchronously through the drive component and the switching component, so that the wastewater automatically flows to the treatment tank on the other side for pretreatment, thereby achieving maintenance without stopping the machine and greatly improving the efficiency of continuous wastewater treatment.

[0019] Simultaneously, when maintenance is closed, the blocking rod pops out and locks the deflection rod, preventing the valve plate on that side from reopening. Only when the processing box is reinserted after maintenance is completed will the blocking rod reset, allowing the valve plate on that side to reopen. Through mechanical forced constraint logic, maintenance operations are ensured to be neither skipped nor forgotten, resulting in high reliability and immunity to electrical signal or circuit failures.

[0020] Second, the invention is arranged vertically and can be directly connected to existing circulation pipelines without special assembly. The bottom of the outlet pipe is equipped with a drain pipe and a drain valve; when the valve plate is closed, the drain valve automatically opens. In this way, before maintenance is performed on one side of the pipeline, all wastewater in that side can be discharged through the drain valve, preventing water from flowing out when the filter is removed and ensuring that wastewater does not come into contact with any mechanical parts.

[0021] Meanwhile, thanks to the layout, all wastewater within the closed path must be filtered before being discharged. Compared to the traditional approach of pumping wastewater back into the inflow pipe to avoid water inrush, this device is waste-free, has more reasonable zoning, and is more convenient to maintain and operate.

[0022] Third, this invention employs an electromagnetic actuator in conjunction with an adaptive spring and a positioning frame. When maintenance on one side is incomplete, causing the deflection rod to lock and the valve plate to be unable to rotate, the drive block will compress the adaptive spring during movement to compensate for the travel, rather than forcibly jamming the transmission mechanism. Compared to the alarm method using hard jamming in existing technologies, this device has less impact on transmission components and the drive source, a longer lifespan, and eliminates the risk of jamming, making overall operation safer and more reliable. Attached Figure Description

[0023] Figure 1 This is an isometric view of the present invention;

[0024] Figure 2 This is a front sectional view of the present invention;

[0025] Figure 3 This is the control logic diagram of the valve plate and the drain valve of the present invention;

[0026] Figure 4 This is a schematic diagram showing the use of filter section one and filter section two of the present invention;

[0027] Figure 5 This is a schematic diagram showing the location of the internal structure of the metal enclosure of the present invention;

[0028] Figure 6 This is a schematic diagram showing the arrangement of the deflection rod and the decorative plate area of ​​the present invention;

[0029] Figure 7 This is a schematic diagram of the driving component area of ​​the present invention;

[0030] Figure 8 This is a schematic diagram of the installation of the sleeve, rotating cylinder one, and rotating cylinder two of the present invention;

[0031] Figure 9 For the present invention Figure 8 Enlarged view of the structure at point A in the middle;

[0032] Figure 10 This is a cross-sectional view of the limiting cylinder of the present invention;

[0033] Figure 11 For the present invention Figure 10 Enlarged view of the structure at point B.

[0034] In the diagram: 1. Inlet pipe; 2. Outlet pipe; 3. Processing box; 4. Processing frame; 5. Filter section one; 6. Filter section two; 7. Metal enclosure; 8. Control lever; 9. Valve plate; 10. Gear; 11. Limiting shaft assembly; 12. Rack and pinion assembly; 13. Positioning bracket; 14. Sleeve; 15. Rotating drum one; 16. Rotating drum two; 17. Rotating wheel; 18. One-way spring; 19. Clamping plate; 20. Deflecting rod; 21. Decorative plate; 22. Limiting... 23. Positioning cylinder; 24. Blocking rod; 25. Compression spring; 26. Trigger shaft; 27. Trigger spring; 28. Snap-on shaft; 29. ​​Snap-on spring; 30. Snap-on groove; 31. Connecting rod; 32. Slide plate; 33. Compression plate; 34. Compression groove; 35. Electromagnetic actuator; 36. Drive rod; 37. Drive block; 38. Positioning frame; 39. Adaptive spring; 40. Drain pipe; 41. Drain valve; 42. Bevel gear assembly. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1:

[0037] Please see Figures 1 to 11This invention provides a pretreatment device for recycling industrial high-salt wastewater, including an inflow pipe 1 and an outflow pipe 2. The inflow pipe 1 and the outflow pipe 2 are connected by two treatment tanks 3. Each treatment tank 3 is equipped with a treatment component for wastewater treatment. The treatment component includes a treatment frame 4 slidably connected inside the treatment tank 3. The inner wall of the treatment frame 4 is detachably connected to a filter section 5 and a filter section 6. The filter section 5 is a grid mesh for isolating large solid waste particles, and the filter section 6 is an adsorbent material for adsorbing fine impurities. The specific components can be selected as needed. The stability between the treatment frame 4 and the treatment tank 3 is ensured by a constraint mechanism. The constraint mechanism is a pin-type connection mechanism, which is a prior art and its specific principle will not be described in detail.

[0038] Two treatment tanks 3 are fixedly connected to metal enclosures 7 on opposite sides. Two control rods 8 are rotatably connected to the inner wall of the metal enclosures 7. The two control rods 8 are rotatably connected to the inner walls of the inflow pipe 1 and the outflow pipe 2, respectively. Valve plates 9 are fixedly connected to both ends of the two control rods 8. The two valve plates 9 located in the inflow pipe 1 and the two valve plates 9 located in the outflow pipe 2 are arranged in an alternating manner. Wastewater flows in from the inlet of the inflow pipe 1. Since the two valve plates 9 are arranged in an alternating manner, the wastewater will flow into the treatment tank 3 on one side through the valve plate 9 in the open state. After being filtered and adsorbed on one side, the wastewater flows into the outflow pipe 2 below and flows out from the outlet.

[0039] It should be emphasized that this device can be directly connected to the existing circulation pipeline and can be installed on the pipeline path of the plant as needed.

[0040] The metal enclosure 7 is equipped with a drive component and a switching component. Considering that the filter section 5 and filter section 6 have a limited lifespan and require regular maintenance / replacement, when maintenance is required, the drive component moves the switching component, thereby causing the two control levers 8 to rotate synchronously. This synchronously switches the arrangement of the valve plates 9 in the inflow pipe 1 and the outflow pipe 2, thus changing the flow path of the wastewater. After being treated by the treatment tank 3 on the other side, the wastewater flows out from the outlet of the lower outflow pipe 2. After the switching is completed, the filter section 5 and filter section 6 that require maintenance can be maintained normally. This uninterrupted wastewater circulation treatment process improves efficiency. In addition, the surface of the metal enclosure 7 is equipped with an inspection door. If it is necessary to replace the parts inside the metal enclosure 7, the inspection door can be opened.

[0041] Furthermore, the switching component includes two gears 10, which are fixedly connected to the rod walls of two control levers 8 respectively. The opposite sides of the two treatment boxes 3 are jointly fixedly connected to a limit shaft assembly 11. The surface of the limit shaft assembly 11 is slidably connected to two rack sets 12. The teeth of the two rack sets 12 mesh with the teeth of the two gears 10 respectively. By driving the two rack sets 12 to move synchronously, the two gears 10 are driven to rotate synchronously, which in turn drives the two control levers 8 to rotate, thereby synchronously switching the arrangement state of the valve plates 9 in the inflow pipe 1 and the outflow pipe 2, thus changing the flow path of the wastewater.

[0042] Furthermore, the processing unit also includes two sets of maintenance indicator components. When maintenance is required, the processing frame 4 can be removed from the processing box 3. The removal method can use some existing material handling mechanisms. In this embodiment, only the process after removal is described. After removal, normal maintenance can be performed. During the removal process, the processing frame 4 will slide relative to the processing box 3. At this time, the maintenance indicator components will change the constraint state of the switching component to ensure that the valve plate 9 is normally driven from the closed state to the open state. Specifically:

[0043] The maintenance indicator component includes a hinge shaft fixed to the side wall of the processing frame 4. The inner wall of the processing box 3 has a slide groove 30 for the hinge shaft to slide. A connecting rod 31 is rotatably connected to the surface of the hinge shaft. A sliding plate 32 is hinged to the end of the connecting rod 31. The sliding plate 32 is slidably connected to the inner wall of the processing box 3. An extrusion plate 33 is fixedly connected to the side wall of the sliding plate 32. An extrusion groove 34 for the extrusion plate 33 to slide is provided on the side wall of the processing box 3. When the processing frame 4 moves, the connecting rod 31 is pulled by the hinge shaft, and the sliding plate 32 is driven to slide vertically by the connecting rod 31, thereby causing the extrusion plate 33 to move vertically.

[0044] Furthermore, the maintenance indicator component also includes two positioning brackets 13, both of which are fixedly connected to the side wall of the processing box 3. The ends of the two positioning brackets 13 are fixedly connected to a sleeve 14, which is sleeved on the outer wall of the control rod 8. Both sides of the sleeve 14 are rotatably connected to a rotating cylinder 15 and a rotating cylinder 2 16 via a magnetic force. The inner walls of the rotating cylinder 15 and the rotating cylinder 2 16 are provided with ratchet teeth, and the two ratchet teeth are in opposite directions. The rod wall of the control rod 8 is fixedly connected to two rotating wheels 17, and the side walls of the two rotating wheels 17 are provided with notches. The surfaces of the two notches are fixedly connected to one-way springs 18, and the ends of the two one-way springs 18 are fixedly connected to a locking plate 19. The ends of the two locking plates 19 are respectively hinged to the side walls of the two rotating wheels 17, and the deflection direction of the two locking plates 19 is consistent with the direction of the two ratchet teeth.

[0045] Specifically, when the control lever 8 rotates, it will drive the two rotating wheels 17 to rotate, so as to Figure 8Taking the upper rotating wheel 17 as an example, when rotating in the forward direction, it drives the first rotating drum 15 to rotate via the clamping plate 19. When rotating in the reverse direction, the clamping plate 19 continuously compresses the one-way spring 18. The lower rotating wheel 17 does the opposite. A deflection rod 20 is fixedly connected to the side wall of the first rotating drum 15, and a decorative plate 21 is fixedly connected to the side wall of the second rotating drum 16. Figure 3 and Figure 5 This allows the first rotating cylinder 15 to rotate when the valve plate 9 changes from closed to open, which is also the rotation of the deflection rod 20; and the second rotating cylinder 16 to rotate when the valve plate 9 changes from open to closed, which is also the rotation of the lace plate 21.

[0046] Furthermore, the maintenance indicator component also includes a limiting cylinder 22, which is fixedly connected to the side wall of the processing box 3. A blocking rod 23 is slidably connected to the inner wall of the limiting cylinder 22. The blocking rod 23 is connected to the inner wall of the limiting cylinder 22 by a compression spring 24. An insertion port is provided on the side wall of the limiting cylinder 22. A trigger shaft 25 is slidably connected in the insertion port. The surface of the trigger shaft 25 is connected to the inner wall of the limiting cylinder 22 by a trigger spring 26. A retaining shaft 27 is slidably connected to the inner wall of the blocking rod 23. The end of the retaining shaft 27 is connected to the inner wall of the blocking rod 23 by a retaining spring 28. A retaining groove 29 is provided on the inner wall of the limiting cylinder 22. The end of the retaining groove 29 near the trigger shaft 25 is inclined.

[0047] Specifically, when the lace plate 21 rotates, it will compress the trigger shaft 25, causing the trigger spring 26 to compress. At this time, the trigger shaft 25 will compress the locking shaft 27, causing the locking spring 28 to compress, thereby causing the locking shaft 27 to disengage from the insertion port. Then, under the elastic restoring action of the compression spring 24, the blocking rod 23 will pop out of the limiting cylinder 22. During the pop-out process, the locking shaft 27 slides along the inner wall of the limiting cylinder 22 until the locking shaft 27 moves to the locking groove 29. (See reference...) Figure 6 It can be seen that after the blocking rod 23 extends, it will be located on the moving path of the deflection rod 20. Therefore, when the valve plate 9 is opened in the future, the blocking rod 23 will block the rotation process of the deflection rod 20, that is, the deflection rod 20 cannot rotate, that is, the control rod 8 cannot rotate, that is, the valve plate 9 cannot be opened here.

[0048] As can be seen from the foregoing, when the processing frame 4 on this side is maintained and reinserted into the processing box 3, this process will drive the extrusion plate 33 to move vertically back and forth once. During the back and forth movement, the blocking rod 23 will be extruded and retracted back into the limiting cylinder 22. During the retraction process, since the end of the slot 29 near the trigger shaft 25 is inclined, it will not obstruct the reset process of the locking shaft 27 until the locking shaft 27 is reinserted into the socket.

[0049] Through the above process, the processing box 4 on the same side must be pulled out before the valve plate 9 on this side can be opened. That is, through the forced constraint logic of the mechanical structure, it is ensured that the wastewater flow path here can only be reopened after the maintenance of the filter section 5 and filter section 6 on the same side is completed. This avoids the situation where maintenance is forgotten due to staff forgetting or other factors. At the same time, due to the use of mechanical constraint method, the reliability is high and it will not be affected by the signals, circuits and other factors of industrial electrical equipment.

[0050] Example 2, based on the above examples:

[0051] Please see Figure 6 and Figure 7 The driving component includes an electromagnetic actuator 35, which is fixedly connected to the side wall of the processing box 3. The output end of the electromagnetic actuator 35 is fixedly connected to a drive rod 36. Two drive blocks 37 are fixedly connected to the rod wall of the drive rod 36. Positioning frames 38 are fixedly connected to the surfaces of the two rack groups 12. The two drive blocks 37 are slidably connected in the two positioning frames 38, and are connected to the inner wall of the positioning frame 38 through an adaptive spring 39.

[0052] Specifically, activating the electromagnetic actuator 35 causes the drive rod 36 to extend or retract once. During this process, the two drive blocks 37 move synchronously. Taking a single drive block 37 as an example, during movement, it pushes the positioning frame 38 through the adapting spring 39, thereby driving the rack and pinion assembly 12 to move, which in turn drives the control rod 8 to rotate through the gear 10. Furthermore, as mentioned above, if the filter section 5 and filter section 6 are not maintained, the deflection rod 20 cannot rotate. Therefore, when the drive block 37 on this side moves, it will compress the adapting spring 39. Compared to the existing technology that uses a "jamming" alarm method, this approach is more user-friendly for the transmission of parts within the metal enclosure 7, resulting in a longer lifespan for the parts and the drive source.

[0053] Example 3, based on the above examples:

[0054] Please see Figures 1 to 3 The pretreatment device also includes a drainage component, which includes a drainage pipe 40 located on the lower side of the outlet pipe 2 and fixedly connected thereto. A drainage valve 41 is rotatably connected to the inner wall of the drainage pipe 40. A shaft is fixedly connected to the side wall of the drainage valve 41 and passes through the drainage pipe 40. A shaft is fixedly connected to the surface of the valve plate 9 inside the outlet pipe 2 and passes through the outlet pipe 2. The shaft is connected to the shaft through a bevel gear assembly 42.

[0055] Specifically, by Figure 3It can be seen that when the valve plate 9 on the same side is closed, the drain valve 41 on that side is open; conversely, when the valve plate 9 on the same side is open, the drain valve 41 on that side is closed. Thus, when maintaining one side of the path, all wastewater on that side can be discharged through the open drain valve 41, preventing water from flowing out during the subsequent removal of filter section 5 and filter section 6. Simultaneously, the wastewater will not come into contact with any mechanical parts. Furthermore, combined with… Figure 1 , Figure 3 and Figure 4 Since this device is set vertically, all wastewater in the closed path must be treated by the first filter section 5 and the second filter section 6 before being discharged. Compared with some traditional methods that use recycling and re-flowing into pipe 1 to avoid wastewater overflow, this method will not produce any waste and the zoning arrangement is more reasonable.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for recycling industrial high-salinity wastewater, comprising an inflow pipe (1) and an outflow pipe (2), characterized in that: The inflow pipe (1) and the outflow pipe (2) are connected together by two treatment boxes (3). Each of the two treatment boxes (3) is equipped with a treatment component for wastewater treatment. The treatment component includes a treatment frame (4) that is slidably connected in the treatment box (3). The inner wall of the treatment frame (4) is detachably connected with a filter section one (5) and a filter section two (6). Metal enclosures (7) are fixedly connected to the opposite sides of the two processing boxes (3). Two control rods (8) are rotatably connected to the inner wall of the metal enclosures (7). The two control rods (8) are rotatably connected to the inner walls of the inflow pipe (1) and the outflow pipe (2), respectively. Valve plates (9) are fixedly connected to both ends of the two control rods (8). The two valve plates (9) located in the inflow pipe (1) and the two valve plates located in the outflow pipe (2) are arranged in an alternating manner. The metal enclosure (7) is equipped with a driving component and a switching component. The driving component drives the switching component to move, thereby driving the two control rods (8) to rotate synchronously, and thus synchronously switching the arrangement state of the valve plate (9) in the inflow pipe (1) and the outflow pipe (2). The processing component also includes two sets of maintenance indicator components. When the processing box (4) is taken out of the processing box (3), the constraint state of the switching component will be changed through the maintenance indicator components to ensure that the switching component can normally drive the valve plate (9) from the closed state to the open state.

2. The industrial high-salinity wastewater recycling pretreatment device according to claim 1, characterized in that: The switching component includes: Two gears (10) are fixedly connected to the rod walls of the two control rods (8) respectively. The opposite sides of the two processing boxes (3) are fixedly connected to a limit shaft group (11). The surface of the limit shaft group (11) is slidably connected to two rack groups (12). The teeth of the two rack groups (12) mesh with the teeth of the two gears (10) respectively.

3. The industrial high-salinity wastewater recycling pretreatment device according to claim 2, characterized in that: The maintenance indicator component includes: Two positioning brackets (13) are fixedly connected to the side wall of the processing box (3). The ends of the two positioning brackets (13) are fixedly connected to a sleeve (14). The sleeve (14) is fitted onto the outer wall of the control rod (8). Both sides of the sleeve (14) are rotatably connected to a rotating cylinder one (15) and a rotating cylinder two (16) via a magnetic force. The inner walls of the rotating cylinder one (15) and the rotating cylinder two (16) are provided with ratchet teeth, and the two ratchet teeth are square. Conversely, the control lever (8) has two rotating wheels (17) fixedly connected to its rod wall. The side walls of the two rotating wheels (17) are provided with notches. One-way springs (18) are fixedly connected to the surfaces of the two notches. The ends of the two one-way springs (18) are fixedly connected with locking plates (19). The ends of the two locking plates (19) are respectively hinged to the side walls of the two rotating wheels (17). The deflection direction of the two locking plates (19) is consistent with the direction of the two ratchet teeth. A deflection rod (20) is fixedly connected to the side wall of the first rotating cylinder (15), and a lace plate (21) is fixedly connected to the side wall of the second rotating cylinder (16).

4. The industrial high-salinity wastewater recycling pretreatment device according to claim 3, characterized in that: The maintenance indicator component also includes: A limiting cylinder (22) is fixedly connected to the side wall of the processing box (3). A blocking rod (23) is slidably connected to the inner wall of the limiting cylinder (22). The blocking rod (23) is connected to the inner wall of the limiting cylinder (22) by a compression spring (24). An insertion port is opened on the side wall of the limiting cylinder (22). A trigger shaft (25) is slidably connected in the insertion port. The surface of the trigger shaft (25) is connected to the inner wall of the limiting cylinder (22) by a trigger spring (26). A retaining shaft (27) is slidably connected to the inner wall of the blocking rod (23). The end of the retaining shaft (27) is connected to the inner wall of the blocking rod (23) by a retaining spring (28). A retaining groove (29) is opened on the inner wall of the limiting cylinder (22). The end of the retaining groove (29) near the trigger shaft (25) is inclined.

5. The industrial high-salinity wastewater recycling pretreatment device according to claim 4, characterized in that: The maintenance indicator component also includes: A hinge shaft is fixed to the side wall of the processing frame (4). The inner wall of the processing box (3) is provided with a sliding groove (30) for the hinge shaft to slide. A connecting rod (31) is rotatably connected to the surface of the hinge shaft. A sliding plate (32) is hinged to the end of the connecting rod (31). The sliding plate (32) is slidably connected to the inner wall of the processing box (3). An extrusion plate (33) is fixedly connected to the side wall of the sliding plate (32). An extrusion groove (34) is provided on the side wall of the processing box (3) for the extrusion plate (33) to slide.

6. The pretreatment device for recycling industrial high-salinity wastewater according to claim 5, characterized in that: The driving component includes: An electromagnetic actuator (35) is fixedly connected to the side wall of the processing box (3). A drive rod (36) is fixedly connected to the output end of the electromagnetic actuator (35). Two drive blocks (37) are fixedly connected to the rod wall of the drive rod (36). Positioning frames (38) are fixedly connected to the surfaces of the two rack groups (12). The two drive blocks (37) are slidably connected in the two positioning frames (38) respectively, and are connected to the inner wall of the positioning frame (38) through an adaptation spring (39).

7. The industrial high-salinity wastewater recycling pretreatment device according to any one of claims 2-4, characterized in that: The pretreatment device also includes a drainage component, which includes: A drain pipe (40) is located below the outlet pipe (2) and is fixedly connected to it. A drain valve (41) is rotatably connected to the inner wall of the drain pipe (40). A shaft is fixedly connected to the side wall of the drain valve (41). The shaft passes through the drain pipe (40). A shaft is fixedly connected to the surface of the valve plate (9) inside the outlet pipe (2). The shaft passes through the outlet pipe (2). The shaft is connected to the shaft through a bevel gear assembly (42).

8. The pretreatment device for recycling industrial high-salinity wastewater according to claim 7, characterized in that: The surface of the metal enclosure (7) is provided with an inspection door, and the processing frame (4) is constrained to ensure stability with the processing box (3).

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