Reverse osmosis membrane sewage treatment device and sewage treatment method

Abstract

The invention relates to the technical field of sewage treatment, and discloses a reverse osmosis membrane sewage treatment device and a sewage treatment method.The reverse osmosis membrane sewage treatment device comprises a base, a treatment box and a reverse osmosis membrane body, when the filter screen accumulates impurities and is about to be blocked, the baffle moves downwards to form a closed cavity, the filter screen extrudes liquid in the cavity under the guide of the slope and the action of the extension spring, high-pressure liquid precisely flushes away the blocked impurities, automatic deep dredging is achieved, manual disassembly is not needed in the whole process, the automation level of equipment is greatly improved, and the labor cost is reduced; the filtering performance can be quickly recovered, and efficient and continuous operation of the sewage treatment process is guaranteed; meanwhile, the collecting plate synchronously rotates when the filter screen is cleaned, fallen impurities are guided and collected, and after the filter screen is reset, the impurities slide into the temporary storage cavity under the action of gravity, so that centralized collection and storage in the whole process are realized, secondary pollution and blockage are avoided, the sewage treatment quality and efficiency are improved, the subsequent treatment process is simplified, and the treatment difficulty is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and specifically relates to a reverse osmosis membrane sewage treatment device and a sewage treatment method. Background Art

[0002] In the field of sewage treatment, reverse osmosis membrane sewage treatment devices are widely used. They initially filter sewage through a filter screen and then use a reverse osmosis membrane to achieve deep purification of the sewage.

[0003] However, in the prior art, when impurities accumulate on the filter screen, they are mainly cleaned by a scraper and a brush. This cleaning method can only deal with the impurities on the surface of the filter screen. For the impurities blocked in the mesh holes of the filter screen, it is difficult for the scraper and the brush to penetrate into the mesh holes to remove them, and an ideal cleaning effect cannot be achieved. Moreover, during the cleaning process, when the scraper and the brush squeeze the filter screen, some debris may pass through the mesh holes and enter the subsequent treatment process, affecting the normal use of the sewage treatment device and the water quality of the effluent, increasing the equipment maintenance cost and the difficulty of sewage treatment.

[0004] In view of this, the present invention is specifically proposed. Summary of the Invention

[0005] To solve the technical problems in the prior art that when impurities accumulate on the filter screen, they are mainly cleaned by a scraper and a brush. This cleaning method can only deal with the impurities on the surface of the filter screen. For the impurities blocked in the mesh holes of the filter screen, it is difficult for the scraper and the brush to penetrate into the mesh holes to remove them, and an ideal cleaning effect cannot be achieved. Moreover, during the cleaning process, when the scraper and the brush squeeze the filter screen, some debris may pass through the mesh holes and enter the subsequent treatment process, affecting the normal use of the sewage treatment device and the water quality of the effluent, increasing the equipment maintenance cost and the difficulty of sewage treatment, the basic concept of the technical solution adopted by the present invention is:

[0006] A reverse osmosis membrane sewage treatment device includes a base and a treatment tank and a reverse osmosis membrane body which are installed on its surface and communicate with each other.

[0007] A filter screen is inserted and arranged inside the treatment tank;

[0008] A baffle for blocking the discharge channel of the treatment tank is inserted inside the treatment tank, and the filter screen slides on the surface of the baffle. A slope for guiding the filter screen to move towards one side of the baffle is arranged on the baffle, and during the movement, the filter screen squeezes the liquid in the inner cavity, and the blocked filter screen is dredged through the liquid pressure;

[0009] A collection plate is installed at the bottom of the processing box. A number of pairs of temporary storage cavities for collecting impurities are provided on the collection plate. An inlet is provided at the top of the temporary storage cavity, and the inlet is in a funnel shape for reducing the overflow of impurities. A guide plate is installed between adjacent temporary storage cavities. A rocker arm connected to the filter screen is installed on the collection plate. The filter screen horizontally slides to pull the collection plate to rotate, and the impurities on the guide plate and the filter screen are collected and guided into the temporary storage cavity after resetting.

[0010] As a preferred embodiment of the present invention, a support frame is installed on the base. The top of the support frame is connected to the outer shell of the reverse osmosis membrane body. Connection covers are installed at both ends of the reverse osmosis membrane body. A connecting pipe is installed on the connection cover, and the connecting pipe is communicated with the inside of the processing box. An inclined plate is installed on the side wall of the support frame, and the inclined plate is connected to the side wall of the connection cover.

[0011] As a preferred embodiment of the present invention, four support legs are installed at the bottom of the processing box, and the bottoms of the four support legs are installed on the base. An observation window for observing the internal processing situation is provided on the surface of the processing box. A water inlet pipe is installed on the side wall of the processing box, and the water inlet pipe is communicated with the internal cavity of the processing box. A flange is installed at the end face of the water inlet pipe.

[0012] As a preferred embodiment of the present invention, a positioning rod is movably installed through the side wall of the filter screen. A positioning plate for preventing falling off is installed at one end of the positioning rod, and a positioning seat is installed at the other end of the positioning rod. The positioning seat is welded to the side wall of the processing box. A tension spring is sleeved on the positioning rod. One end of the tension spring is clamped on the side wall of the filter screen, and the other end of the tension spring is clamped on the positioning seat.

[0013] As a preferred embodiment of the present invention, a partition plate is installed on the processing box. A baffle is movably installed through the partition plate. The bottom of the partition plate is slidably connected to the filter screen. A sealing groove is installed at the bottom of the processing box, and the sealing groove is adapted to the baffle. A top rod is installed on the side wall of the filter screen, and a guide wheel is installed at the end of the top rod. The guide wheel is in rolling connection with the side wall of the baffle.

[0014] As a preferred embodiment of the present invention, a limiting rod is installed on the partition plate. A limiting plate is installed at the top of the limiting rod. A sliding plate is slidably arranged on the limiting rod. The side wall of the sliding plate is connected to the surface of the baffle. A limiting spring is sleeved on the limiting rod. One end of the limiting spring is clamped on the partition plate, and the other end of the limiting spring is clamped on the sliding plate.

[0015] As a preferred embodiment of the present invention, a cover plate is installed on the top of the processing box. Mounting ears are installed on the mutual surfaces of the cover plate and the processing box, and a number of pairs of mounting holes for connection are provided on the mounting ears. A hydraulic push rod is installed on the top of the cover plate. The output end of the hydraulic push rod movably penetrates through the cover plate. A fixed seat is installed on the top of the baffle, and a countersunk head groove is provided on the fixed seat, and the countersunk head groove corresponds to the output end of the hydraulic push rod.

[0016] As a preferred embodiment of the present invention, an installation groove is provided at the bottom of the processing box. A synchronous shaft is installed on the side wall of the installation groove. The synchronous shaft is connected to the rotation center of the collection plate, and the collection plate is placed in the installation groove. A guiding slope is installed on the side wall of the processing box, and the guiding slope corresponds to the side wall of the installation groove. The synchronous shaft is connected to a rocker arm. A strip-shaped groove is provided on the rocker arm, and a sliding rod is slidably arranged on the strip-shaped groove. Synchronous rods are installed at both ends of the sliding rod, and the synchronous rods are connected to the side wall of the filter net.

[0017] As a preferred embodiment of the present invention, a triangular protrusion is installed at the end of the guiding plate. The triangular protrusion is used to prevent impurities from overflowing, and an inclined surface is provided at the bottom of the temporary storage cavity, and the inclined surface corresponds to the side wall of the inlet.

[0018] As a preferred embodiment of the present invention, the sewage treatment method of a reverse osmosis membrane sewage treatment device is as follows:

[0019] Step 1: Install the processing box and the reverse osmosis membrane body on the base, and connect the processing box and the reverse osmosis membrane body.

[0020] Step 2: Introduce sewage into the processing box. The sewage inside is filtered through the filter net. The preliminarily filtered sewage is transported into the reverse osmosis membrane body for further filtration. And for the sewage in the processing box, through sedimentation, part of the impurities flow from the inlet to the temporary storage cavity for preliminary collection.

[0021] Step 3: When the filter net is about to be blocked, the operator starts the hydraulic push rod to drive the baffle connected to the output end to move downward. Eventually, the chamber between the filter net and the baffle becomes a sealed state. And during the continuous sliding of the baffle in the sealing groove, the filter net will slide along the slope, thereby driving the filter net to slide towards the baffle side. At this time, the chamber is squeezed, and the high-pressure chamber inside reversely squeezes the impurities blocking the mesh holes of the filter net, causing the impurities to float away from the filter net side, thereby achieving the purpose of unclogging the filter net.

[0022] Step 4: After the filter screen moves, the synchronization rod on the filter screen pulls the sliding rod to move. The sliding rod slides on the rocker arm, thereby driving the entire collection plate to rotate into an inclined state. At this time, the impurities that have been cleaned float onto the guide plate of the collection plate. When the collection plate resets, they are re-collected into the temporary storage cavity by gravity.

[0023] The present invention has the following beneficial effects compared with the prior art:

[0024] When the impurities accumulated on the filter screen of the present invention are about to cause blockage, a closed chamber is formed by the downward movement of the baffle. Under the action of the slope guide and the tension spring, the filter screen squeezes the liquid in the chamber, and the high-pressure liquid precisely flushes away the blocked impurities, realizing automatic in-depth dredging. The whole process does not require manual disassembly, which not only greatly improves the automation level of the equipment and reduces the labor cost, but also can quickly restore the filtering performance and ensure the efficient and continuous operation of the sewage treatment process. At the same time, the collection plate rotates synchronously when the filter screen is cleaned to guide and collect the falling impurities. After the filter screen resets, the impurities slide into the temporary storage cavity under the action of gravity, realizing centralized collection and storage throughout the process, effectively avoiding secondary pollution and blockage, further improving the quality and efficiency of sewage treatment, simplifying the subsequent treatment process, and reducing the treatment difficulty.

[0025] The following further describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. Description of the Drawings

[0026] In the drawings:

[0027] Figure 1 is a three-dimensional structure diagram of a reverse osmosis membrane sewage treatment device;

[0028] Figure 2 is a side structure diagram of a reverse osmosis membrane sewage treatment device;

[0029] Figure 3 is a cross-sectional view of the treatment tank of a reverse osmosis membrane sewage treatment device;

[0030] Figure 4 is a partial structure diagram of a reverse osmosis membrane sewage treatment device Figure 1 ;

[0031] Figure 5 is a partial structure diagram of a reverse osmosis membrane sewage treatment device Figure 2 ;

[0032] Figure 6 is a partial structure diagram of a reverse osmosis membrane sewage treatment device Figure 3 ;

[0033] Figure 7 is a reverse osmosis membrane sewage treatment device Figure 6 enlarged view of part A in;

[0034] Figure 8 It is a cross-sectional view of the collection plate of a reverse osmosis membrane sewage treatment device;

[0035] Figure 9 It is a flow chart for cleaning impurities in the filter screen of a reverse osmosis membrane sewage treatment device.

[0036] In the figure:

[0037] 1. Base;

[0038] 2. Treatment tank; 21. Cover plate; 211. Installation ear; 22. Observation window; 221. Support leg; 222. Water inlet pipe; 223. Flange; 23. Filter screen; 231. Positioning rod; 232. Positioning plate; 233. Tensile spring; 234. Positioning seat; 24. Partition board; 241. Guide slope;

[0039] 3. Reverse osmosis membrane body; 31. Connection cover; 311. Connection pipe; 312. Support frame; 313. Inclined plate;

[0040] 4. Baffle; 41. Slope; 411. Sealing groove; 412. Thrust rod; 413. Guide wheel; 42. Limit rod; 421. Slide plate; 422. Limit plate; 423. Limit spring; 43. Hydraulic push rod; 431. Fixed seat; 432. Countersunk head groove;

[0041] 5. Collection plate; 51. Installation groove; 511. Synchronous shaft; 52. Guide plate; 521. Triangular protrusion; 522. Temporary storage cavity; 523. Inclined surface; 524. Inlet; 53. Rocker arm; 531. Strip-shaped groove; 532. Slide rod; 533. Synchronous rod. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0043] Embodiment 1:

[0044] As Figures 1 to 9 shown, a reverse osmosis membrane sewage treatment device includes a base 1 and a treatment tank 2 and a reverse osmosis membrane body 3 which are installed on its surface and communicate with each other.

[0045] A filter screen 23 is inserted and arranged inside the treatment tank 2;

[0046] Inside the treatment tank 2, a baffle 4 for blocking the discharge channel of the treatment tank 2 is inserted. The filter screen 23 slides on the surface of the baffle 4. A slope 41 for guiding the filter screen 23 to move to one side of the baffle 4 is provided on the baffle 4. During the movement, the filter screen 23 squeezes the liquid in the inner cavity, and the blocked filter screen 23 is dredged through the liquid pressure. This design enables the filter screen 23 to be automatically dredged through the liquid pressure by the linkage of the baffle 4 and the filter screen 23 without manual cleaning after being blocked, which not only reduces the labor maintenance cost, but also improves the continuity and automation degree of the equipment operation, and avoids the problem of the decline of the sewage treatment efficiency caused by the blockage of the filter screen.

[0047] A collecting plate 5 is installed at the bottom of the treatment tank 2. A number of pairs of temporary storage cavities 522 for collecting impurities are opened on the collecting plate 5. An inlet 524 is provided at the top of the temporary storage cavity 522, and the inlet 524 is in a funnel shape for reducing the overflow of impurities. A guiding plate 52 is installed between adjacent temporary storage cavities 522. A rocker arm 53 connected to the filter screen 23 is installed on the collecting plate 5. The filter screen 23 horizontally slides to pull the collecting plate 5 to rotate, and the guiding plate 52 collects the impurities on the filter screen 23 and guides them into the temporary storage cavity 522 after resetting. This design of the impurity collection structure can centrally collect the impurities settled in the sewage and the impurities dredged from the filter screen 23, avoiding the accumulation of impurities in the treatment tank 2 and affecting the treatment effect. At the same time, the cooperation of the funnel-shaped inlet and the guiding plate 52 effectively prevents the overflow of impurities and facilitates subsequent unified cleaning and treatment.

[0048] As Figures 1 to 9 As shown, in the specific implementation, a support frame 312 is installed on the base 1. The top of the support frame 312 is connected to the shell of the reverse osmosis membrane body 3. Connection covers 31 are installed at both ends of the reverse osmosis membrane body 3. Connection pipes 311 are installed on the connection covers 31. The connection pipes 311 are internally connected to the inside of the treatment tank 2. An inclined plate 313 is installed on the side wall of the support frame 312. The inclined plate 313 is connected to the side wall of the connection cover 31. The setting of the support frame 312 and the inclined plate 313 provides a stable support structure for the reverse osmosis membrane body 3, ensuring its stability during operation, reducing the damage to the reverse osmosis membrane caused by factors such as vibration, and ensuring the efficient and stable operation of the reverse osmosis membrane. The design of the connection pipes 311 realizes the smooth transportation of sewage between the treatment tank 2 and the reverse osmosis membrane body 3, ensuring the continuity of the sewage treatment process.

[0049] As Figures 1 to 9As shown in the figure, further, four support legs 221 are installed at the bottom of the treatment tank 2, and the bottoms of the four support legs 221 are installed on the base 1. An observation window 22 for observing the internal treatment situation is arranged on the surface of the treatment tank 2. A water inlet pipe 222 is installed on the side wall of the treatment tank 2, and the water inlet pipe 222 is communicated with the internal chamber of the treatment tank 2. A flange 223 is installed at the end face of the water inlet pipe 222. The support legs 221 ensure the stability of the installation of the treatment tank 2 and prevent it from shaking during operation; the observation window 22 facilitates the operator to observe the sewage situation, impurity accumulation situation and the operating state of the filter screen 23 inside the treatment tank 2 in real time, and discover and handle problems in time; the design of the water inlet pipe 222 and the flange 223 facilitates the connection with the external sewage conveying pipeline, and the flange connection method is convenient for disassembly and maintenance, improving the flexibility of equipment installation and use.

[0050] Embodiment 2:

[0051] Based on the above embodiment, the difference from this embodiment is: As Figures 1 to 9 shown in the figure, a positioning rod 231 is movably installed through the side wall of the filter screen 23. A positioning plate 232 for preventing falling off is installed at one end of the positioning rod 231. A positioning seat 234 is installed at the other end of the positioning rod 231. The positioning seat 234 is welded to the side wall of the treatment tank 2. A tension spring 233 is sleeved on the positioning rod 231. One end of the tension spring 233 is clamped on the side wall of the filter screen 23, and the other end of the tension spring 233 is clamped on the positioning seat 234. The structure composed of the positioning rod 231, the positioning plate 232, the positioning seat 234 and the tension spring 233 provides accurate guidance and stable restoring force for the movement of the filter screen 23, ensuring that the filter screen 23 remains stable during the movement along the slope 41 of the baffle 4 and the reset process, and will not deviate or get stuck, thus ensuring the reliable operation of the automatic dredging function of the filter screen 23 and improving the stability and reliability of equipment operation.

[0052] As Figures 1 to 9As shown, in the specific implementation manner, a partition plate 24 is installed on the processing box 2. A baffle 4 is movably and penetratingly installed on the partition plate 24. The bottom of the partition plate 24 is slidably connected to the filter screen 23. A sealing groove 411 is installed at the bottom of the processing box 2, and the sealing groove 411 is adapted to the baffle 4. A top rod 412 is installed on the side wall of the filter screen 23, and a guide wheel 413 is installed at the end of the top rod 412. The guide wheel 413 is in rolling connection with the side wall of the baffle 4. The setting of the partition plate 24 reasonably divides the internal space of the processing box 2, providing a stable space environment for the movement of the baffle 4 and the filter screen 23; the adaptation of the sealing groove 411 and the baffle 4 can form a good seal when the baffle 4 descends, ensuring the sealing of the chamber when the filter screen 23 is dredged by liquid pressure and improving the dredging effect; the rolling connection mode of the guide wheel 413 reduces the friction between the filter screen 23 and the baffle 4, making the filter screen 23 move more smoothly during the movement, reducing the energy consumption of the equipment operation, and at the same time extending the service life of each component.

[0053] As Figures 1 to 9 shown, further, a limiting rod 42 is installed on the partition plate 24. A limiting plate 422 is installed at the top of the limiting rod 42. A sliding plate 421 is slidably arranged on the limiting rod 42. The side wall of the sliding plate 421 is connected to the surface of the baffle 4. A limiting spring 423 is sleeved on the limiting rod 42. One end of the limiting spring 423 is clamped on the partition plate 24, and the other end of the limiting spring 423 is clamped on the sliding plate 421. The limiting structure composed of the limiting rod 42, the limiting plate 422, the sliding plate 421 and the limiting spring 423 provides precise limitation for the movement of the baffle 4 to ensure that the baffle 4 moves along a predetermined track during the up and down movement, preventing deviation; the limiting spring 423 can provide a reset force during the rising process of the baffle 4, reducing the collision and impact between components, protecting the equipment components, and extending the overall service life of the equipment.

[0054] As Figures 1 to 9As shown in the figure, further, a cover plate 21 is installed on the top of the processing tank 2. Mounting ears 211 are installed on the mutually contacting surfaces of the cover plate 21 and the processing tank 2, and a number of pairs of mounting holes for connection are provided on the mounting ears 211. A hydraulic push rod 43 is installed on the top of the cover plate 21. The output end of the hydraulic push rod 43 movably penetrates through the cover plate 21. A fixed seat 431 is installed on the top of the baffle 4, and a counterbore 432 is provided on the fixed seat 431. The counterbore 432 corresponds to the output end of the hydraulic push rod 43. The cover plate 21 can protect the interior of the processing tank 2 and prevent sundries from entering the processing tank 2 and affecting the sewage treatment process. The design of the mounting ears 211 and the mounting holes facilitates the installation and disassembly of the cover plate 21 and is convenient for the inspection and maintenance of the interior of the processing tank 2. The hydraulic push rod 43, as a power source, can provide a stable and controllable driving force for the movement of the baffle 4. Through the cooperation with the fixed seat 431 and the counterbore 432, the moving distance and speed of the baffle 4 can be accurately controlled, thereby precisely controlling the dredging process of the filter screen 23 and improving the accuracy and automation of the equipment operation.

[0055] Embodiment 3:

[0056] Based on the above embodiment, the difference from this embodiment is: As Figures 1 to 9 shown in the figure, an installation groove 51 is provided at the bottom of the processing tank 2. A synchronous shaft 511 is installed on the side wall of the installation groove 51. The synchronous shaft 511 is connected to the rotation center of the collection plate 5. The collection plate 5 is placed in the installation groove 51. A guiding slope 241 is installed on the side wall of the processing tank 2, and the guiding slope 241 corresponds to the side wall of the installation groove 51. The synchronous shaft 511 is connected to a rocker arm 53. A strip-shaped groove 531 is provided on the rocker arm 53. A sliding rod 532 is slidably arranged on the strip-shaped groove 531. Synchronous rods 533 are installed at both ends of the sliding rod 532. The synchronous rods 533 are connected to the side wall of the filter screen 23. The guiding slope 241 can guide impurities to smoothly enter the installation groove 51 and then fall into the temporary storage cavity 522 of the collection plate 5. The transmission structure composed of the rocker arm 53, the strip-shaped groove 531, the sliding rod 532 and the synchronous rods 533 realizes the linkage between the movement of the filter screen 23 and the rotation of the collection plate 5, so that the impurities dredged from the filter screen 23 can be timely collected by the collection plate 5 without an additional driving device, simplifies the equipment structure, reduces the equipment cost, and at the same time improves the efficiency and automation of impurity collection.

[0057] As Figures 1 to 9As shown, in the specific implementation manner, a triangular protrusion 521 is installed at the end of the guide plate 52. The triangular protrusion 521 is used to prevent impurities from overflowing, and an inclined surface 523 is provided at the bottom of the temporary storage cavity 522. The inclined surface 523 corresponds to the side wall of the inlet 524. The triangular protrusion 521 further enhances the effect of the guide plate 52 in preventing impurities from overflowing, ensuring that impurities can be stably collected; the design of the inclined surface 523 at the bottom of the temporary storage cavity 522 can assist impurities to smoothly slide into the interior of the temporary storage cavity 522, avoid the accumulation of impurities in the cavity, improve the thoroughness of impurity collection, and facilitate subsequent cleaning and treatment.

[0058] The present invention also discloses a sewage treatment method for a reverse osmosis membrane sewage treatment device, and the steps are as follows:

[0059] Step 1: Install the treatment tank 2 and the reverse osmosis membrane body 3 on the base 1, and connect the treatment tank 2 and the reverse osmosis membrane body 3.

[0060] Step 2: Introduce sewage into the treatment tank 2. The sewage inside is filtered through the filter screen 23. The preliminarily filtered sewage is transported to the reverse osmosis membrane body 3 for further filtration. And for the sewage in the treatment tank 2, through sedimentation, part of the impurities flow from the inlet 524 to the temporary storage cavity 522 for preliminary collection.

[0061] Step 3: When the filter screen 23 is about to be blocked, the operator starts the hydraulic push rod 43 to drive the baffle 4 connected to the output end to move downward. Eventually, the cavity between the filter screen 23 and the baffle 4 becomes a closed state. And during the continuous sliding of the baffle 4 in the sealing groove 411, the filter screen 23 will slide along the slope 41, thereby driving the filter screen 23 to slide towards the baffle 4 side. At this time, the cavity is squeezed, and the high-pressure cavity inside reversely squeezes the impurities blocking the mesh holes of the filter screen 23, causing the impurities to float away from the filter screen 23 side, thereby achieving the purpose of unclogging the filter screen 23.

[0062] Step 4: After the filter screen 23 moves, the synchronizing rod 533 on the filter screen 23 pulls the sliding rod 532 to move. The sliding rod 532 slides on the rocker arm 53, thereby driving the entire collection plate 5 to rotate into an inclined state. At this time, the cleaned impurities float onto the guide plate 52 of the collection plate 5. When the collection plate 5 resets, they are re-collected into the temporary storage cavity 522 by gravity.

[0063] The implementation principle of a reverse osmosis membrane sewage treatment device of the present invention is as follows:

[0064] Install the treatment tank 2 and the reverse osmosis membrane body 3 on the base 1, and connect the treatment tank 2 and the reverse osmosis membrane body 3. Then, introduce sewage into the treatment tank 2 through the water inlet pipe 222. The sewage first passes through the filter screen 23 in the treatment tank 2 for preliminary filtration to intercept larger particulate impurities in the sewage. The preliminarily filtered sewage flows into the reverse osmosis membrane body 3 through the connecting pipe 311. Utilizing the semi-permeability of the reverse osmosis membrane, under the drive of pressure, small molecule substances, ions, organic substances and other impurities in the water are further removed to achieve the deep purification treatment of sewage.

[0065] During the operation of the treatment tank 2, on the one hand, some impurities in the sewage naturally settle under the action of gravity and fall into the temporary storage chamber 522 through the funnel-shaped inlet 524 at the top of the temporary storage chamber 522 for preliminary collection. The guide plate 52 and the triangular protrusion 521 cooperate to prevent the impurities from overflowing during the collection process. The inclined surface 523 at the bottom of the temporary storage chamber 522 then assists the impurities to smoothly slide into the interior of the chamber, improving the collection effect.

[0066] On the other hand, when the filter screen 23 gradually accumulates impurities during the long-term filtration process and the mesh holes are blocked by the protruding impurities and are about to be blocked, start the hydraulic push rod 43 at the top of the cover plate 21. The output end of the hydraulic push rod 43 pushes the baffle 4 downward. The baffle 4 slides along the limiting rod 42 on the partition plate 24. The sliding plate 421 moves on the limiting rod 42 and compresses the limiting spring 423 to provide buffering and guidance for the movement of the baffle 4. When the baffle 4 is initially inserted into the sealing groove 411 at the bottom of the treatment tank 2, at this time, the slope 41 on the baffle 4 has not yet contacted the ejector rod 412 on the filter screen, but the baffle 4 cooperates with the inner wall of the treatment tank 2 to make the chamber between the filter screen 23 and the baffle 4 form a sealed state. This design can ensure that the liquid in the chamber will not leak during the subsequent extrusion operation, providing a stable sealed environment for using the liquid pressure to dredge the filter screen 23 and improving the reliability of the dredging effect.

[0067] As the baffle 4 continues to slide downward, the slope 41 on the baffle 4 gradually corresponds to the guide wheel 413 at the end of the ejector rod 412. At this time, the structure composed of the positioning rod 231, the positioning plate 232, the positioning seat 234 and the tension spring 233 comes into play. The tension spring 233 always applies a pulling force to the filter screen 23, making the ejector rod 412 closely fit the side wall of the baffle 4, ensuring that the filter screen 23 can accurately and smoothly slide along the positioning rod 231 and move toward one side of the baffle 4 under the guidance of the slope 41. The movement of the filter screen 23 continuously squeezes the liquid in the sealing chamber, forming a high-pressure environment. The high-pressure liquid acts on the impurities blocking the mesh of the filter screen 23 in the reverse direction, washing them away and completing the automatic dredging of the filter screen 23. This phased design not only ensures the sealing effect of the chamber but also can accurately control the movement timing and process of the filter screen 23. Without an additional driving device, it greatly reduces the energy consumption and cost of the equipment; at the same time, it ensures the stability and reliability of the movement of the filter screen 23, avoiding deviation or jamming due to external forces and guaranteeing the effective realization of the key dredging function. This automatic dredging method does not require manual disassembly and cleaning, significantly improving the automation level of the equipment, reducing the frequency and intensity of manual maintenance, and lowering the labor cost; and it can promptly restore the filtering performance of the filter screen 23, avoiding problems such as a decline in sewage treatment efficiency and deterioration of treatment effect caused by the blockage of the filter screen, effectively guaranteeing the continuity and high efficiency of the sewage treatment process.

[0068] Meanwhile, during the horizontal sliding process of the filter screen 23, the synchronous rod 533 thereon drives the slide rod 532 to slide in the strip-shaped groove 531 of the rocker arm 53, and then drives the collection plate 5 to rotate to an inclined state (as Figure 9 shown). At this time, the impurities cleaned from the filter screen 23 float toward the guide plate 52 of the collection plate 5 under the drive of the water flow. When the filter screen 23 is dredged and the hydraulic push rod 43 drives the baffle 4 to reset, the filter screen 23 resets synchronously, driving the collection plate 5 to return to the horizontal state again. The impurities on the guide plate 52 slide into the temporary storage chamber 522 along the inclined plane 523 under the action of gravity, realizing the centralized collection and storage of impurities. This impurity collection mechanism enables the cleaned impurities to be promptly collected, avoiding the re-mixing of impurities into the treatment process, causing secondary pollution or blockage, and further guaranteeing the quality and efficiency of sewage treatment; moreover, the centralized storage of impurities is convenient for subsequent unified treatment, reducing the complexity and difficulty of impurity treatment.

Claims

1. A reverse osmosis membrane sewage treatment device, comprising a base (1) and a treatment box (2) and a reverse osmosis membrane body (3) mounted on the surface of the base and connected to each other, characterized in that: A filter screen (23) is inserted and arranged inside the processing box (2); A baffle (4) for blocking the discharge channel of the processing box (2) is inserted inside the processing box (2), and the filter screen (23) slides on the surface of the baffle (4). The baffle (4) is provided with a slope (41) for guiding the filter screen (23) to move toward one side of the baffle (4), and during the movement, the filter screen (23) squeezes the liquid in the inner cavity and clears the blocked filter screen (23) through the liquid pressure; A collecting plate (5) is installed at the bottom of the processing box (2), and a plurality of pairs of temporary storage chambers (522) for collecting impurities are opened on the collecting plate (5), and an inlet (524) is arranged at the top of the temporary storage chamber (522), and the inlet (524) is funnel-shaped for reducing the overflow of impurities, and a guide plate (52) is installed on the adjacent temporary storage chambers (522). A rocker arm (53) connected to a filter screen (23) is installed on the collecting plate (5), and the filter screen (23) slides horizontally to pull the collecting plate (5) to rotate, and the guide plate (52) collects the impurities on the filter screen (23) and guides them to the temporary storage chamber (522) after resetting.

2. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: A support frame (312) is installed on the base (1), the top of the support frame (312) is interconnected with the outer shell of the reverse osmosis membrane body (3), connecting covers (31) are installed at both ends of the reverse osmosis membrane body (3), a connecting pipe (311) is installed on the connecting cover (31), the connecting pipe (311) is communicated with the inside of the processing box (2), and an inclined plate (313) is installed on the side wall of the support frame (312), and the inclined plate (313) is interconnected with the side wall of the connecting cover (31).

3. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: Four supporting legs (221) are installed at the bottom of the processing box (2), and the bottoms of the four supporting legs (221) are installed on the base (1). The surface of the processing box (2) is provided with an observation window (22) for observing the internal processing conditions. A water inlet pipe (222) is installed on the side wall of the processing box (2), and the water inlet pipe (222) is communicated with the internal chamber of the processing box (2). A flange plate (223) is installed on the end face of the water inlet pipe (222).

4. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: A positioning rod (231) is movably installed through the side wall of the filter screen (23); a positioning plate (232) for preventing falling off is installed at one end of the positioning rod (231); a positioning seat (234) is installed at the other end of the positioning rod (231); the positioning seat (234) is welded to the side wall of the processing box (2); a tension spring (233) is sleeved on the positioning rod (231); one end of the tension spring (233) is clamped on the side wall of the filter screen (23); and the other end of the tension spring (233) is clamped on the positioning seat (234).

5. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: The processing box (2) is provided with a partition (24), a baffle (4) is movably installed on the partition (24), and the bottom of the partition (24) is slidably connected to the filter screen (23). The bottom of the processing box (2) is provided with a sealing groove (411), and the sealing groove (411) is adapted to the baffle (4). The side wall of the filter screen (23) is provided with a push rod (412), and a guide wheel (413) is installed at the end of the push rod (412), and the guide wheel (413) is rollingly connected to the side wall of the baffle (4).

6. A reverse osmosis membrane sewage treatment device according to claim 5, characterized in that: A limiting rod (42) is installed on the partition (24), a limiting plate (422) is installed on the top of the limiting rod (42), a slide plate (421) is slidably arranged on the limiting rod (42), a side wall of the slide plate (421) is connected to the surface of the baffle (4), a limiting spring (423) is sleeved on the limiting rod (42), one end of the limiting spring (423) is clamped on the partition (24), and the other end of the limiting spring (423) is clamped on the slide plate (421).

7. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: A cover plate (21) is installed on the top of the processing box (2), and mounting ears (211) are installed on the surfaces of the cover plate (21) and the processing box (2), and a plurality of pairs of mounting holes for connection are provided on the mounting ears (211), a hydraulic push rod (43) is installed on the top of the cover plate (21), and the output end of the hydraulic push rod (43) movably passes through the cover plate (21), and a fixing seat (431) is installed on the top of the baffle (4), and a countersunk groove (432) is provided on the fixing seat (431), and the countersunk groove (432) corresponds to the output end of the hydraulic push rod (43).

8. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: The bottom of the processing box (2) is provided with a mounting groove (51), and a synchronizing shaft (511) is installed on the side wall of the mounting groove (51). The synchronizing shaft (511) is connected to the rotation center of the collecting plate (5), and the collecting plate (5) is placed in the mounting groove (51). A guide slope (241) is installed on the side wall of the processing box (2), and the guide slope (241) corresponds to the side wall of the mounting groove (51). The synchronizing shaft (511) is connected to the rocker arm (53). The rocker arm (53) is provided with a strip groove (531), and a sliding rod (532) is slidably arranged on the strip groove (531). Synchronizing rods (533) are installed at both ends of the sliding rod (532), and the synchronizing rod (533) is connected to the side wall of the filter screen (23).

9. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: A triangular protrusion (521) is installed at the end of the guide plate (52), and the triangular protrusion (521) is used to prevent impurities from overflowing. The bottom of the temporary storage cavity (522) is provided with an inclined surface (523), and the inclined surface (523) corresponds to the side wall of the inlet (524).

10. A method for treating wastewater using a reverse osmosis membrane, characterized in that: A reverse osmosis membrane sewage treatment device as described in any one of claims 1 to (9), wherein the sewage treatment method of the reverse osmosis membrane sewage treatment device comprises the following steps: Step 1: installing the processing box (2) and the reverse osmosis membrane body (3) on the base (1), and connecting the processing box (2) and the reverse osmosis membrane body (3); Step 2: Sewage is introduced into the processing box (2), the sewage inside is filtered through the filter net (23), and the initially filtered sewage is transported to the reverse osmosis membrane body (3) to be filtered. The sewage in the processing box (2) is sedimented, and a part of the impurities flow from the inlet (524) to the temporary storage chamber (522) for initial collection; Step 3: When the filter screen (23) is about to be blocked, the operator starts the hydraulic push rod (43) to drive the baffle (4) connected to the output end to move downward, and finally the chamber between the filter screen (23) and the baffle (4) becomes sealed, and while the baffle (4) continues to slide in the sealing groove (411), the filter screen (23) will slide along the slope (41), thereby driving the filter screen (23) to slide toward the side of the baffle (4), and at this time, the chamber is squeezed, and the internal high-pressure chamber reversely squeezes the impurities that block the mesh of the filter screen (23), so that the impurities float to the side away from the filter screen (23), thereby achieving the purpose of clearing the filter screen (23); Step 4: After the filter screen (23) moves, the synchronization rod (533) on the filter screen (23) pulls the slide rod (532) to move, and the slide rod (532) slides on the rocker arm (53), thereby driving the entire collection plate (5) to rotate and tilt. At this time, the cleaned impurities float to the guide plate (52) of the collection plate (5). When the collection plate (5) is reset, it is collected again into the temporary storage chamber (522) by gravity.

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