Zero-discharge multi-stage wastewater treatment device for industrial high-salinity wastewater

Abstract

The invention relates to the technical field of wastewater treatment equipment, in particular to a zero-discharge multi-stage wastewater treatment device for industrial high-salinity wastewater, which comprises a base, a fixed frame fixedly mounted on the base and a support limiting frame fixedly mounted on the fixed frame, and the support limiting frame is slidably connected with a heat exchange box. Limiting assemblies corresponding to the heat exchange box are arranged on the two sides of the front end face of the fixing frame. The fixing frame is provided with a settling box and a core treatment box which are located at the bottom of the heat exchange box from top to bottom, the heat exchange box, the settling box and the core treatment box are sequentially communicated through connecting channels, and a feeding pipe is arranged on the side wall of the settling box. The pressure of the extrusion frame on the third sealing frame can be automatically adjusted, it can be ensured that the extrusion plate and the third sealing frame are tightly attached, the pressure is evenly distributed, a traditional manual adjustment sealing mode is replaced, and the sealing reliability is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment equipment, in particular to a zero-emission multi-stage wastewater treatment device for industrial high-salinity wastewater. BACKGROUND

[0002] Industrial high-salinity wastewater is widely generated in many industries such as chemical industry, pharmaceutical industry, printing and dyeing industry, and seawater desalination. The water quality of the wastewater is complex, containing not only high-concentration salt substances (such as sodium chloride and sodium sulfate), but also pollutants such as refractory organic matter and heavy metal ions. When the high-salinity wastewater penetrates into the soil, it will break the original ion balance and aggregate structure of the soil, cause soil compaction, significantly reduce the air and water permeability of the soil, destroy the soil microbial community, and lead to permanent degradation of soil fertility, affecting agricultural production and sustainable use of land. Discharge of the wastewater will also pollute the groundwater, and if the contaminated groundwater is used as a source of drinking water, it will lose the function of drinking water and threaten the water safety of surrounding residents. Therefore, achieving zero-emission treatment of high-salinity wastewater has become a key issue in the field of industrial environmental protection.

[0003] At present, the treatment technologies for industrial high-salinity wastewater mainly include evaporation crystallization, membrane separation, and sedimentation adsorption. However, the existing treatment technologies and supporting equipment still have many deficiencies in practical application. Firstly, the connection between the units of the traditional multi-stage treatment device is not close enough, and fixed connection is mostly used, which has poor limit stability, and the core components such as heat exchange boxes are inconvenient to disassemble and assemble, and the subsequent maintenance efficiency is low. Secondly, the heat exchange units generally have poor sealing performance, and are prone to wastewater leakage or loss of heat exchange medium. In addition, the arrangement of the heat exchange pipes is unreasonable, and the internal baffle design is imperfect, which leads to low heat exchange efficiency and easy blockage of the pipes due to salt crystallization. Thirdly, the deep treatment components are mostly fixed installation structures, and when the adsorption plates and reaction membranes are saturated or damaged, the disassembly and replacement process is complicated, which affects the continuity of treatment. Fourthly, the sealing mechanisms of the existing devices are mostly manually adjusted, and the sealing pressure is uneven, which cannot adapt to the pressure fluctuation in the high-salinity wastewater treatment process, further increasing the risk of leakage. Therefore, a zero-emission multi-stage wastewater treatment device for industrial high-salinity wastewater is needed to solve the above problems. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the present application provides a zero-emission multi-stage wastewater treatment device for industrial high-salinity wastewater, which can effectively solve the problems existing in the prior art.

[0005] To achieve the above purpose, the present application is implemented by the following technical solutions:

[0006] The application provides a zero-emission multistage wastewater treatment device for industrial high-salinity wastewater, which comprises a base, a fixing frame fixedly installed on the base and a supporting limiting frame fixedly installed on the fixing frame, the supporting limiting frame is slidably connected with an assembly provided with a heat exchange box, and the front end surface of the fixing frame is provided with a limiting assembly corresponding to the heat exchange box on both sides.

[0007] The fixing frame is provided, from top to bottom, with a sedimentation tank located at the bottom of the heat exchange box and a core treatment tank, the heat exchange box, the sedimentation tank and the core treatment tank are sequentially communicated through a connecting channel, a water outlet end of the core treatment tank is provided with a drain pipe, a water inlet pipe is arranged at the top of the heat exchange box, a handle is arranged at the front end of the heat exchange box, a heat exchange assembly is arranged in the heat exchange box, and a sealing assembly is arranged on one side of the heat exchange box; a feeding pipe is arranged on the side wall of the sedimentation tank, a plug-in plate is arranged in the side wall of the core treatment tank, mounting grooves are formed in the inner walls of the two sides of the core treatment tank, and a treatment assembly is assembled between the two mounting grooves.

[0008] Preferably, the limiting assembly comprises a limiting rotating shaft fixedly connected to the fixing frame, a limiting plate rotatably connected to the limiting rotating shaft, and a stop block fixedly installed on the fixing frame and matched with the limiting plate.

[0009] Preferably, the heat exchange assembly comprises two mounting plates, main pipes fixedly connected to the inner walls of the two mounting plates, a plurality of connecting pipes equidistantly installed between the two main pipes, two connecting pipes respectively connected to the two main pipes at one end, a plurality of heat exchange pipes arranged between the connecting pipes, a supporting sliding frame fixedly connected to the heat exchange box for mounting the mounting plates, a first sealing frame installed on the inner wall of one side of the heat exchange box, a second sealing frame installed on the outer wall of the other side of the heat exchange box, and a baffle arranged in the connecting pipes.

[0010] Preferably, the heat exchange box is provided with a plug hole on both sides, one of the mounting plates is located in the heat exchange box, and the other mounting plate is located outside the heat exchange box, and the two mounting plates are respectively attached to the first sealing frame and the second sealing frame.

[0011] Preferably, the sealing assembly comprises a third sealing frame fixedly installed on the outer wall of one of the mounting plates, a first mounting frame and a second mounting frame symmetrically arranged on one side of the heat exchange box, a screw rod rotatably assembled on the first mounting frame, a guide column fixedly installed on the second mounting frame, a positioning column fixedly connected to the first mounting frame and the second mounting frame, an extrusion frame installed on the outer wall of the screw rod and the guide column, the screw rod and the corresponding extrusion frame being threadedly connected, the guide column and the corresponding extrusion frame being slidably connected, a rotating rod rotatably connected to one of the extrusion frames, a motor fixedly connected to the first mounting frame, and an output shaft of the motor connected to one end of the screw rod.

[0012] Preferably, both of the extrusion frames are provided with positioning holes corresponding to the positioning posts, and both positioning posts penetrate the interior of the positioning holes.

[0013] Preferably, both extrusion frames consist of a movable plate and an extrusion plate. The two movable plates are respectively connected to a lead screw and a guide column. The two extrusion plates are connected to the corresponding movable plates via hinges, and the two extrusion plates are tightly fitted to the third sealing frame.

[0014] Preferably, both of the extrusion frames have slots on their tops, and the rotating rod rotates inside one of the slots and corresponds to the other slot.

[0015] Preferably, the processing component includes two sliding seats that are slidably connected inside two mounting slots, and the inner walls of the two sliding seats are provided with slots for removal. An installation frame is fixedly connected between the two sliding seats, and a first adsorption plate, a reaction membrane, and a second adsorption plate are inserted into the interior of the installation frame from top to bottom.

[0016] Preferably, all of the plurality of connection channels are flexible hoses, and are movably connected to the corresponding heat exchange box, sedimentation box and core processing box.

[0017] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0018] The device uses a sliding connection between the support and limiting frame and the heat exchange box. With the help of the limiting components on the fixed frame, the heat exchange box can be quickly pulled out and disassembled, which is convenient for the inspection or replacement of the internal heat exchange components. At the same time, the cooperation of the limiting plate and the stop block can limit the sliding displacement of the heat exchange box, which can prevent the heat exchange box from shifting due to vibration during operation. This solves the problems of cumbersome disassembly and assembly and low maintenance efficiency of traditional fixed connection heat exchange boxes.

[0019] The heat exchange assembly adopts a structure with double mounting plates, main pipes, multiple sets of connecting pipes and heat exchange tubes. The connecting pipes are equipped with baffles inside, which can optimize the flow path of wastewater in the heat exchange tubes and extend the heat exchange time. At the same time, the first and second sealing frames on both sides of the heat exchange box are respectively attached to the inner and outer mounting plates, and together with the third sealing frame and the compression frame of the sealing assembly, effectively prevent wastewater leakage or loss of heat exchange medium, significantly improving heat exchange stability and efficiency.

[0020] The sealing assembly is driven by a motor to rotate a lead screw, which in turn causes the extrusion frame to slide along the guide column. With the positioning column limiting the extrusion frame, the pressure of the extrusion frame on the third sealing frame can be automatically adjusted, ensuring that the extrusion plate and the third sealing frame are tightly fitted and the pressure is evenly distributed. This replaces the traditional manual adjustment method of the seal, can adapt to pressure fluctuations in the high-salt wastewater treatment process, further improves the reliability of the seal, and avoids the decrease in treatment efficiency due to seal failure. In addition, the extrusion frame is composed of an extrusion plate connected by a moving plate and a hinge, which can be rotated and adjusted in the future, allowing the heat exchange assembly to be directly removed for separate cleaning.

[0021] The processing components inside the core processing box slide and engage with the mounting slot via a sliding seat, and the mounting frame and the sliding seat are detachably connected via a snap-fit. When the first adsorption plate, reaction membrane, or second adsorption plate becomes saturated or is damaged, the insert plate can be directly pulled out, and then the sliding seat can be pulled upwards to remove the mounting frame and complete the component replacement. There is no need to disassemble the entire core processing box, which greatly shortens the replacement time, avoids processing interruptions caused by component maintenance, and ensures continuous operation of the device.

[0022] The heat exchanger, sedimentation tank, and core treatment tank are connected by flexible hoses, which can accommodate the disassembly of the heat exchanger and core treatment tank. This avoids pipe damage or loosening caused by the relocation of the heat exchanger, which is a problem with traditional fixed pipes. At the same time, it ensures smooth wastewater transport between the treatment units and improves the overall adaptability and stability of the device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a front view of the present invention;

[0026] Figure 3 This is a schematic diagram of the heat exchange box in this invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the heat exchanger in this invention;

[0028] Figure 5 This is a schematic diagram of the sealing assembly in this invention;

[0029] Figure 6 This is a schematic diagram of the core processing box in this invention;

[0030] Figure 7 This is a schematic diagram of the internal structure of the core processing box in this invention;

[0031] Figure 8 This is a schematic diagram of the processing component in this invention;

[0032] Figure 9 This is a cross-sectional view of the connecting pipe in the heat exchange assembly of the present invention;

[0033] Figure 10 for Figure 1 A magnified view of a portion of point A in the middle.

[0034] Figure label:

[0035] 1. Base; 2. Fixing frame; 3. Support and limiting frame; 31. Limiting component; 311. Limiting pivot; 312. Limiting plate; 313. Stop block;

[0036] 4. Heat exchanger box; 41. Water inlet pipe; 42. Handle; 43. Heat exchange assembly; 44. Sealing assembly;

[0037] 431. Mounting plate; 432. Main pipe; 433. Connecting pipe; 434. Heat exchanger pipe; 435. Slide carriage; 436. First sealing frame; 437. Second sealing frame; 438. Baffle;

[0038] 441. Third sealing frame; 442. First mounting frame; 443. Second mounting frame; 444. Lead screw; 445. Guide post; 446. Positioning post; 447. Extrusion frame; 448. Rotating rod; 449. Motor;

[0039] 5. Sedimentation tank; 51. Feed pipe;

[0040] 6. Core processing box; 61. Insert board; 62. Mounting slot; 63. Processing components;

[0041] 631. Sliding seat; 632. Clip groove; 633. Mounting frame; 634. First adsorption plate; 635. Reaction membrane; 636. Second adsorption plate;

[0042] 7. Drain pipe; 8. Connecting channel. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] The present invention will be further described below with reference to embodiments.

[0045] Example: Refer to Figures 1 to 10 A zero-discharge multi-stage wastewater treatment device for industrial high-salt wastewater includes a base 1, a fixed frame 2 fixedly installed on the base 1, and a support and limiting frame 3 fixedly installed on the fixed frame 2. The support and limiting frame 3 is slidably connected to a heat exchange box 4. Limiting components 31 corresponding to the heat exchange box 4 are provided on both sides of the front end face of the fixed frame 2.

[0046] The mounting frame 2 is equipped with a sedimentation tank 5 and a core processing tank 6 located at the bottom of the heat exchange box 4 from top to bottom. The heat exchange box 4, sedimentation tank 5 and core processing tank 6 are connected in sequence through a connecting channel 8. The outlet end of the core processing tank 6 is equipped with a drain pipe 7. The top of the heat exchange box 4 is equipped with a water inlet pipe 41. The front end of the heat exchange box 4 is equipped with a handle 42. The heat exchange box 4 is equipped with a heat exchange component 43 inside. A sealing component 44 is provided on one side of the heat exchange box 4 inside. The side wall of the sedimentation tank 5 is equipped with a feeding pipe 51. The side wall of the core processing tank 6 is equipped with a plate 61. The inner walls on both sides of the core processing tank 6 are provided with mounting grooves 62. The processing component 63 is assembled between the two mounting grooves 62.

[0047] The limiting assembly 31 includes a limiting shaft 311 fixedly connected to the fixed frame 2, a limiting plate 312 rotatably connected to the limiting shaft 311, and a stop 313 that cooperates with the limiting plate 312 fixedly installed on the fixed frame 2. The limiting shaft 311 provides a rotation fulcrum for the limiting plate 312. When the heat exchange box 4 slides to the working position along the supporting limiting frame 3, the limiting plate 312 can be rotated around the limiting shaft 311 so that the limiting plate 312 fits against the side wall of the heat exchange box 4, limiting the sliding displacement of the heat exchange box 4. The function of the stop 313 is to limit the rotation angle of the limiting plate 312 to ensure the stability of the limiting.

[0048] The heat exchange assembly 43 includes two mounting plates 431, with main pipes 432 fixedly connected to the inner walls of both mounting plates 431. Multiple connecting pipes 433 are installed at equal intervals between the two main pipes 432, with one end of each connecting pipe 433 connected to one of the two main pipes 432. Multiple heat exchange pipes 434 are arranged between the multiple connecting pipes 433. A support slide 435 for the mounting plates 431 is fixedly connected inside the heat exchange box 4. A first sealing frame 436 is installed on one inner wall of the heat exchange box 4, and a second sealing frame 437 is installed on the other outer wall of the heat exchange box 4. Baffles 438 are provided inside the multiple connecting pipes 433. The main pipes 432 are used to transport the heat exchange medium, and the connecting pipes 434... 33 connects the two main pipes 432 to form a circulation path for the heat exchange medium. The heat exchange tubes 434 are laterally distributed between the connecting pipes 433 to increase the contact area with the wastewater in the heat exchange box 4 and improve the heat exchange efficiency. The support slide 435 provides positioning support for the mounting plate 431, so that the mounting plate 431 cannot shift when installed inside the heat exchange box 4, ensuring that the heat exchange tubes 434 are in a stable position inside the heat exchange box 4. The first sealing frame 436 and the second sealing frame 437 provide a preliminary seal for the gap between the mounting plate 431 and the wall of the heat exchange box 4 to prevent leakage of wastewater or heat exchange medium. The baffle 438 in the connecting pipe 433 can change the flow direction of the heat exchange medium and prolong the residence time of the heat exchange medium in the pipe.

[0049] The heat exchange box 4 has insertion holes on both sides. One mounting plate 431 is located inside the heat exchange box 4, and the other mounting plate 431 is located outside the heat exchange box 4. The two mounting plates 431 are respectively attached to the first sealing frame 436 and the second sealing frame 437. The insertion holes on both sides of the heat exchange box 4 provide passage for the mounting plates 431 and the connected pipes, ensuring a smooth connection between the external main pipe 432 and the internal heat exchange pipe 434. The design of one mounting plate 431 inside and one outside clarifies the installation direction of the internal mounting plate 431. It is pushed in from one side of the heat exchange box 4 and pressed against the inner wall of the other side to complete the installation and adapt to the space inside the heat exchange box 4.

[0050] The sealing assembly 44 includes a third sealing frame 441 fixedly installed on the outer wall of one of the mounting plates 431. A first mounting frame 442 and a second mounting frame 443 are symmetrically arranged along the front and rear sides of one side of the heat exchange box 4. A lead screw 444 is rotatably mounted on the first mounting frame 442, and a guide post 445 is fixedly mounted on the second mounting frame 443. Positioning posts 446 are fixedly connected to both the first mounting frame 442 and the second mounting frame 443. Extrusion frames 447 are installed on the outer walls of both the lead screw 444 and the guide post 445. The lead screw 444 is threadedly connected to the corresponding extrusion frame 447, and the guide post 445 is slidably connected to the corresponding extrusion frame 447. A rotating rod 448 is rotatably connected to one of the extrusion frames 447. A motor 449 is fixedly connected to the first mounting bracket 442, and the output shaft of the motor 449 is connected to one end of the lead screw 444. The third sealing bracket 441 is fixed to the outer wall of the mounting plate 431. The gap between the two mounting plates 431 and the heat exchange box 4 is sealed by pressing the third sealing bracket 441. The first mounting bracket 442 and the second mounting bracket 443 provide support for the lead screw 444 and the guide column 445 respectively, ensuring the stability of the drive structure. The motor 449 provides power for the seal: the output shaft of the motor 449 drives the lead screw 444 to rotate. Since the lead screw 444 is threadedly connected to the pressing bracket 447, the rotation of the lead screw 444 is converted into the linear movement of the pressing bracket 447 along the guide column 445, thereby achieving the pressing seal.

[0051] Both extrusion frames 447 are provided with positioning holes corresponding to the positioning posts 446, and both positioning posts 446 penetrate the interior of the positioning holes. The positioning holes and positioning posts 446 are fitted with a clearance fit, which allows the extrusion frame 447 to slide smoothly along the positioning posts 446, while limiting the lateral displacement of the extrusion frame 447, ensuring the movement stability of the extrusion frame 447, giving it a better extrusion effect, and ensuring the sealing of the heat exchange box 4.

[0052] Both extrusion frames 447 consist of a movable plate and an extrusion plate. The two movable plates are connected to the lead screw 444 and the guide column 445, respectively. The two extrusion plates are connected to the corresponding movable plates via hinges, and both extrusion plates are in close contact with the third sealing frame 441. The function of the movable plate is to transmit power. It is connected to the lead screw 444 and the guide column 445 to convert the rotational power of the lead screw 444 into linear extrusion power. The function of the extrusion plate is to directly seal. It applies sealing pressure by being in close contact with the third sealing frame 441. The hinge allows the extrusion plate to rotate. When disassembling the heat exchange component 43, the limit can be released by rotating the extrusion plate, which facilitates the disassembly of the heat exchange component 43 and reduces the difficulty of maintenance.

[0053] Both extrusion frames 447 have slots on their tops. The rotating rod 448 rotates inside one of the slots and corresponds to the other slot. The main function of the slots is to position and store the components. When the motor 449 is working normally, the rotating rod 448 is placed in one of the slots, so that the two extrusion frames 447 can move synchronously to perform extrusion sealing. The two extrusion frames 447 can be easily separated, thereby releasing the restriction on the heat exchange component 43.

[0054] The processing component 63 includes two sliding seats 631 that are slidably connected inside two mounting slots 62. Each sliding seat 631 has a retaining groove 632 on its inner wall for removal. A mounting frame 633 is fixedly connected between the two sliding seats 631. A first adsorption plate 634, a reaction membrane 635, and a second adsorption plate 636 are inserted into the mounting frame 633 from top to bottom. The sliding connection between the sliding seats 631 and the mounting slots 62 enables the overall pulling out of the processing component 63. When the first adsorption plate 634, the reaction membrane 635, and the second adsorption plate 636 are saturated or damaged, the sliding seat 631 can be pulled out directly along the mounting slots 62 without disassembling the core processing box 6, greatly shortening the replacement time. The retaining groove 632 provides a force point for pulling out, making it convenient for operators to grasp.

[0055] Multiple connection channels 8 are all flexible hoses, and are movably connected to the corresponding heat exchange box 4, sedimentation box 5 and core treatment box 6. The heat exchange box 4 and core treatment box 6 need to be disassembled during subsequent cleaning. Flexible hoses can avoid the pulling caused by displacement and facilitate connection, avoiding pipe rupture or joint leakage caused by bending of traditional rigid pipes, and ensuring the continuity of wastewater transportation.

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

[0057] First, connect the external heat exchange channel to the two main pipes 432, and rotate the rotating rod 448 into another slot so that the two extrusion frames 447 can move synchronously.

[0058] Next, the industrial high-salt wastewater enters the heat exchange box 4 through the inlet pipe 41. At this time, the heat exchange component 43 starts to work: the heat exchange medium is transported through the main pipe 432, and the heat exchange medium flows into the heat exchange tube 434 through the connecting pipe 433. Since the heat exchange tube 434 is distributed laterally between the connecting pipes 433, it is in full contact with the wastewater in the heat exchange box 4 to achieve heat exchange; the baffle 438 in the connecting pipe 433 changes the flow direction of the heat exchange medium and makes it fully mixed, forming turbulence to prolong the residence time and improve the heat exchange efficiency.

[0059] During this process, the sealing assembly 44 ensures sealing performance: the motor 449 drives the lead screw 444 to rotate, the lead screw 444 drives one of the extrusion frames 447 to move, and the other extrusion frame 447 moves linearly along the guide post 445. The two extrusion frames 447 press the third sealing frame 441 on one of the mounting plates 431, making it fit tightly against the second sealing frame 437. At the same time, the other mounting plate 431 fits tightly against the first sealing frame 436, completing the sealing at both ends. The positioning post 446 restricts the displacement of the extrusion frame 447, ensuring uniform force and preventing leakage of wastewater or heat exchange medium. In addition, during installation and subsequent processes, the support slide 435 restricts the position of the fixed mounting plate 431, ensuring the stability of the position of the heat exchange tube 434.

[0060] After heat exchange pretreatment, the wastewater flows into the sedimentation tank 5 through the connecting channel 8 made of flexible hose. The operator adds sedimentation agents such as flocculants and heavy metal capture agents through the feed pipe 51 on the side wall of the sedimentation tank 5. The agents react with suspended particles, heavy metal ions and other pollutants in the wastewater to form precipitates, thus achieving preliminary impurity removal.

[0061] After sedimentation and impurity removal, the wastewater continues to enter the core treatment tank 6 through the connecting channel 8. It undergoes three-stage deep purification through the treatment component 63: the first adsorption plate 634 adsorbs large molecular pollutants such as residual suspended particles and some organic matter in the wastewater. Then, the wastewater flows through the reaction membrane 635, which specifically intercepts salt substances and recalcitrant organic matter in the high-salt wastewater. Finally, the second adsorption plate 636 deeply adsorbs residual trace pollutants such as trace heavy metals and small molecular organic matter to ensure that the wastewater purification meets the standards. After deep purification, the wastewater that meets the pre-discharge requirements is discharged through the drain pipe 7 at the outlet of the core treatment tank 6.

[0062] The processing component 63 is slidably connected to the mounting groove 62 via the sliding seat 631. When the first adsorption plate 634, the reaction membrane 635, or the second adsorption plate 636 are saturated or damaged, the connection channel 8 can be disconnected, the insert plate 61 can be pulled out, and then the sliding seat 631 and the mounting frame 633 can be pulled out via the snap-fit ​​groove 632. The purification components can be quickly replaced without disassembling the box, ensuring the continuity of processing.

[0063] When maintaining the heat exchange component 43, reverse the motor 449 so that the two pressing plates 447 no longer press the third sealing frame 441. Then rotate the rotating rod 448 into the initial slot. Then, the two pressing plates 447 can be rotated by the hinge so that they no longer block the disassembly path of the heat exchange component 43. Then, pull out the mounting plate 431 directly and move it along the outside of the heat exchange box 4. The installation operation is the same.

[0064] When maintenance is required on heat exchange box 4, simply rotate the limiting plate 312 in the opposite direction around the limiting shaft 311 to disengage it from the limiting position of heat exchange box 4, and then pull heat exchange box 4 along the support limiting frame 3 using handle 42. After maintenance, push heat exchange box 4 back to its original position, rotate the limiting plate 312 to fit against its side wall, and the stop block 313 restricts excessive rotation of the limiting plate 312 to ensure stable positioning of heat exchange box 4 and restore normal operation of the device.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A zero-discharge multi-stage wastewater treatment device for industrial high-salinity wastewater, characterized in that, It includes a base (1), a fixed frame (2) fixedly installed on the base (1), and a support and limiting frame (3) fixedly installed on the fixed frame (2). The support and limiting frame (3) is slidably connected to a heat exchange box (4). The front end face of the fixed frame (2) is provided with limiting components (31) corresponding to the heat exchange box (4). The mounting bracket (2) is equipped with a sedimentation tank (5) and a core processing tank (6) located at the bottom of the heat exchange box (4) from top to bottom. The heat exchange box (4), sedimentation tank (5) and core processing tank (6) are connected in sequence through a connecting channel (8). The water outlet of the core processing tank (6) is provided with a drain pipe (7). The top of the heat exchange box (4) is provided with a water inlet pipe (41). The front end of the heat exchange box (4) is provided with a handle (42). The heat exchange box (4) is provided with a heat exchange component (43) inside. The inner side of the heat exchange box (4) is provided with a sealing component (44). The side wall of the sedimentation tank (5) is provided with a feeding pipe (51). The side wall of the core processing tank (6) is provided with a plug plate (61). The inner walls on both sides of the core processing tank (6) are provided with mounting grooves (62). The processing component (63) is assembled between the two mounting grooves (62).

2. The zero-discharge multi-stage wastewater treatment device for industrial high-salinity wastewater according to claim 1, characterized in that, The limiting component (31) includes a limiting pivot (311) fixedly connected to the fixed frame (2), a limiting plate (312) rotatably connected to the limiting pivot (311), and a stop (313) that cooperates with the limiting plate (312) fixedly installed on the fixed frame (2).

3. The zero-discharge multi-stage wastewater treatment device for industrial high-salinity wastewater according to claim 1, characterized in that, The heat exchange assembly (43) includes two mounting plates (431), and the inner walls of the two mounting plates (431) are fixedly connected to main pipes (432). Multiple connecting pipes (433) are installed at equal intervals between the two main pipes (432). One end of each of the two connecting pipes (433) is connected to the two main pipes (432). Multiple heat exchange tubes (434) are provided between the multiple connecting pipes (433). The heat exchange box (4) is fixedly connected to a support slide (435) for the mounting plates (431). A first sealing frame (436) is installed on one inner wall of the heat exchange box (4), and a second sealing frame (437) is installed on the other outer wall of the heat exchange box (4). Baffles (438) are provided inside the multiple connecting pipes (433).

4. The zero-discharge multi-stage wastewater treatment device for industrial high-salinity wastewater according to claim 3, characterized in that, The heat exchange box (4) has insertion holes on both sides. One of the mounting plates (431) is located inside the heat exchange box (4), and the other mounting plate (431) is located outside the heat exchange box (4). The two mounting plates (431) are respectively attached to the first sealing frame (436) and the second sealing frame (437).

5. A zero-discharge multi-stage wastewater treatment device for industrial high-salinity wastewater according to claim 4, characterized in that, The sealing assembly (44) includes a third sealing frame (441) fixedly installed on the outer wall of one of the mounting plates (431). A first mounting frame (442) and a second mounting frame (443) are symmetrically arranged along the front and rear sides of one side of the heat exchange box (4). A lead screw (444) is rotatably mounted on the first mounting frame (442), and a guide post (445) is fixedly mounted on the second mounting frame (443). Positioning posts (445) are fixedly connected to both the first mounting frame (442) and the second mounting frame (443). 46) Both the lead screw (444) and the guide post (445) are equipped with extrusion frames (447). The lead screw (444) is threadedly connected to the corresponding extrusion frame (447), and the guide post (445) is slidably connected to the corresponding extrusion frame (447). A rotating rod (448) is rotatably connected to one of the extrusion frames (447). A motor (449) is fixedly connected to the first mounting frame (442). The output shaft of the motor (449) is connected to one end of the lead screw (444).

6. The zero-discharge multi-stage wastewater treatment device for industrial high-salinity wastewater according to claim 5, characterized in that, Both of the extrusion frames (447) are provided with positioning holes corresponding to the positioning posts (446), and both positioning posts (446) penetrate the interior of the positioning holes.

7. A zero-discharge multi-stage wastewater treatment device for industrial high-salinity wastewater according to claim 6, characterized in that, Both of the extrusion frames (447) are composed of a movable plate and an extrusion plate. The two movable plates are respectively connected to the lead screw (444) and the guide column (445). The two extrusion plates are connected to the corresponding movable plates through hinges, and the two extrusion plates are tightly fitted to the third sealing frame (441).

8. A zero-discharge multi-stage wastewater treatment device for industrial high-salinity wastewater according to claim 7, characterized in that, Both of the extrusion frames (447) have slots on their tops, and the rotating rod (448) rotates inside one of the slots and corresponds to the other slot.

9. A zero-discharge multi-stage wastewater treatment device for industrial high-salinity wastewater according to claim 1, characterized in that, The processing component (63) includes two sliding seats (631) that are slidably connected inside two mounting slots (62). The inner walls of the two sliding seats (631) are provided with snap-fit ​​slots (632) for removal. An installation frame (633) is fixedly connected between the two sliding seats (631). The first adsorption plate (634), the reaction membrane (635), and the second adsorption plate (636) are inserted into the interior of the installation frame (633) from top to bottom.

10. A zero-discharge multi-stage wastewater treatment device for industrial high-salinity wastewater according to claim 1, characterized in that, All of the multiple connection channels (8) are flexible hoses, and are movably connected to the corresponding heat exchange box (4), sedimentation box (5) and core processing box (6).

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