A high-salt water membrane concentration device

Abstract

This application relates to the technical field of high-salinity water treatment, and in particular to a high-salinity water membrane concentration device, comprising an evaporation assembly, a pretreatment chamber, an inlet pipe, a cleaning mechanism, a drive mechanism, and an inlet. The evaporation assembly is connected to the pretreatment chamber via the inlet, and the pretreatment chamber is connected to the inlet pipe. The cleaning mechanism and the drive mechanism are mounted on the pretreatment chamber. The cleaning mechanism filters impurities in the high-salinity water, enabling efficient filtration of the high-salinity water entering the pretreatment chamber and effectively intercepting suspended impurities and particulate matter. Furthermore, the drive mechanism drives a top plate to move vertically, causing the cleaning brush to clean the filter screen surface, achieving self-cleaning of the filter screen and preventing filtration efficiency reduction due to impurities clogging the filter screen. This ensures the continuity and stability of the high-salinity water pretreatment, providing high-quality raw materials for subsequent evaporation and concentration stages.

Description

Technical Field

[0001] This application relates to the technical field of high saline treatment, and in particular to high saline membrane concentration equipment. Background Technology

[0002] Industrial production processes, such as those in the chemical, power, and metallurgical industries, generate large quantities of high-salt water. High-salt water has a complex composition, containing significant amounts of salt, suspended solids, colloids, and other impurities. Direct discharge of such water would severely damage the ecological environment. Therefore, zero-emission MVR (Mechanical Vapor Recompression) equipment for high-salt water treatment has emerged. MVR equipment achieves a highly efficient and energy-saving evaporation and concentration process by compressing and reusing secondary steam, making it a crucial device for achieving zero emissions in high-salt water treatment.

[0003] However, existing zero-discharge MVR (Medium-Voltage Reduction) equipment for high-salinity water treatment presents a series of problems if it directly enters the evaporation components without effective pretreatment. Impurities such as suspended solids, silt, and particulate matter, as well as potential colloidal substances and microorganisms, are present in the high-salinity water. These impurities easily deposit on the heat exchange surfaces of the evaporation components, forming a fouling layer that reduces the equipment's heat transfer efficiency, leading to increased energy consumption and a significant decrease in treatment efficiency during the evaporation and concentration process. Furthermore, these impurities may clog internal pipes and flow channels, affecting normal operation and even causing equipment malfunctions, thus shortening the equipment's lifespan. In addition, some components of the impurities may react with chemicals in the high-salinity water, affecting the quality of the evaporation and concentration products and increasing the difficulty of subsequent treatment.

[0004] Currently, while some high-salinity water treatment systems include simple pretreatment steps, such as conventional filter screens, these screens have low filtration precision, making it difficult to intercept fine particulate impurities. Furthermore, these screens are prone to clogging, requiring frequent manual cleaning, which increases labor intensity and operating costs. Sedimentation tanks are also used, but these methods are time-consuming, require large areas, and are ineffective at treating colloids and other difficult-to-settle impurities, failing to meet the stringent pretreatment requirements of MVR (Multi-Recovery Vessel) equipment. Therefore, how to efficiently and reliably pretreat high-salinity water to ensure that the impurity content of the water entering the MVR equipment meets requirements, thereby improving equipment operating efficiency and reducing maintenance costs, has become a pressing issue in the field of high-salinity water treatment. Utility Model Content

[0005] To address the problems mentioned in the background section, this application provides a high-salt water membrane concentration device.

[0006] This application provides a high-salinity membrane concentration device, which adopts the following technical solution: it includes an evaporation component, a pretreatment tank, an inlet pipe, a cleaning mechanism, a drive mechanism, and an inlet. The evaporation component is connected to the pretreatment tank through the inlet, and the pretreatment tank is connected to the inlet pipe. The cleaning mechanism and the drive mechanism are disposed on the pretreatment tank. The cleaning mechanism is used to filter impurities in the high-salinity water, and the drive mechanism is used to drive the cleaning mechanism to perform self-cleaning.

[0007] Optional components also include steam pipes, connecting pipes, check valves, and coils;

[0008] The steam pipe is connected to the steam outlet of the evaporation assembly, and the steam pipe is connected to the connecting pipe. The connecting pipe is connected to the coil through a one-way valve, and the coil is coiled on the inner wall of the pretreatment chamber.

[0009] Optionally, it also includes a cover that is fastened to the pretreatment chamber.

[0010] Optionally, the cleaning mechanism includes multiple filters, a frame, a top plate, a connecting rod, a bracket, and a cleaning brush;

[0011] Multiple filters are slidably connected to the inner wall of the pretreatment chamber, the tops of the multiple filters are connected to the frame, the top plate is connected to the bracket via a connecting rod, the bracket is connected to the cleaning brush, and the driving mechanism can drive the top plate to move in the vertical direction.

[0012] Optionally, the drive mechanism includes a motor, gears, racks, rods, and cylinders;

[0013] The motor is connected to the pretreatment box, the output end of the motor is connected to the gear, the gear is meshed with the rack, the rack is connected to the rod, the rod is slidably connected to the cylinder, and the rod is connected to the top plate.

[0014] Optionally, the cleaning mechanism may further include a stop, a groove, a limiting block, and bolts;

[0015] The groove is formed on the stop block, the groove is slidably connected to the limiting block, the bolt is threadedly connected to the limiting block, the bolt abuts against the upper surface of the stop block, and the stop block can extend between the frame and the filter screen.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] 1. This utility model, by setting up a cleaning mechanism with multiple filter screens slidably connected to the inner wall of the pretreatment tank, can efficiently filter high-salinity water entering the pretreatment tank, effectively intercepting suspended impurities and particulate matter. Furthermore, the drive mechanism can drive the top plate to move vertically, causing the cleaning brush to clean the filter screen surface, achieving self-cleaning of the filter screens. This avoids reduced filtration efficiency due to impurities clogging the filter screens, ensuring the continuity and stability of high-salinity water pretreatment, and providing high-quality raw materials for subsequent evaporation and concentration stages. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the front in an embodiment of this application;

[0019] Figure 2 This is an exploded view of an embodiment of this application;

[0020] Figure 3 This is a three-dimensional structural diagram of the cleaning mechanism in the embodiments of this application;

[0021] Figure 4 This is a partially enlarged schematic diagram of the cleaning mechanism in the embodiments of this application;

[0022] Figure 5 This is a three-dimensional structural schematic diagram of the cleaning mechanism and the driving mechanism in the embodiments of this application;

[0023] Figure 6 This is a three-dimensional structural diagram of the connecting pipe and the one-way valve in the embodiments of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Evaporation assembly; 2. Pretreatment chamber; 3. Liquid inlet pipe; 4. Cleaning mechanism; 401. Support; 402. Cleaning brush; 403. Connecting rod; 404. Top plate; 405. Stop block; 406. Tank; 407. Limiting block; 408. Bolt; 409. Filter screen; 410. Frame; 5. Drive mechanism; 501. Motor; 502. Gear; 503. Rack; 504. Cylinder; 505. Rod; 6. Steam pipe; 7. Connecting pipe; 8. Check valve; 9. Coil; 10. Cover; 11. Liquid inlet. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0027] This application discloses a high-salt water membrane concentration device.

[0028] Please see Figure 1 and Figure 2This high-salinity water treatment zero-discharge MVR equipment includes an evaporation assembly 1, a pretreatment tank 2, an inlet pipe 3, a cleaning mechanism 4, a drive mechanism 5, and an inlet 11.

[0029] The evaporation assembly 1 is equipped with a liquid inlet 11 at the top, which is connected to the pretreatment tank 2 via a flange to achieve a sealed connection, ensuring that the high-salt water can flow smoothly from the pretreatment tank 2 into the evaporation assembly 1. The evaporation assembly 1, as the core of the equipment, is used to evaporate and concentrate the high-salt water.

[0030] The pretreatment tank 2 is connected to the inlet pipe 3 via a pipeline, and the high-salt water enters the pretreatment tank 2 through the inlet pipe 3. The cleaning mechanism 4 and the drive mechanism 5 are both installed on the pretreatment tank 2 and work together. The cleaning mechanism 4 is used to intercept and filter suspended impurities and particulate matter in the high-salt water to prevent these impurities from entering the evaporation component 1 and avoiding equipment blockage or affecting evaporation efficiency.

[0031] Please see Figures 3 to 5 The cleaning mechanism 4 and the drive mechanism 5 are cooperatingly installed in the pretreatment chamber 2 to achieve high-salinity impurity filtration and filter screen self-cleaning functions. Multiple filter screens 409 are rectangular flat plates made of corrosion-resistant metal woven mesh, with wear-resistant sliding plates embedded on their sides. These plates slide in conjunction with vertical grooves on the inner wall of the pretreatment chamber 2, ensuring that the filter screens 409 can slide smoothly along the height of the chamber. The tops of the filter screens 409 are fixedly connected to the frame 410 by welding. The frame 410 serves as a supporting structure, ensuring the overall stability of the multiple filter screens 409.

[0032] The top plate 404 is horizontally positioned above the filter screen 409 and connected to the bracket 401 via three connecting rods 403. The three connecting rods 403 are arranged in an equilateral triangle to ensure even force distribution. The bottom of the bracket 401 is fixedly connected to the cleaning brush 402, whose bristles are in close contact with the surface of the filter screen 409 to remove impurities trapped by the filter screen 409.

[0033] In addition, the cleaning mechanism 4 also includes a stop 405, a groove 406, a limiting block 407, and a bolt 408. The groove 406 is horizontally positioned in the middle of the stop 405. The limiting block 407 can slide laterally within the groove 406. The bolt 408 passes through the threaded hole of the limiting block 407. After tightening, the bottom of the bolt 408 abuts against the upper surface of the stop 405, thus fixing the position of the limiting block 407. When it is necessary to lift the filter screen 409, loosen the bolt 408, move the limiting block 407, causing the stop 405 to disengage from the gap between the frame 410 and the filter screen 409. Retighten the bolt, and as the top plate 404 moves upward, it will drive the stop 405 upward, thereby driving the filter screen 409 upward, thus enabling the removal of the filter screen 409.

[0034] Drive mechanism 5: Motor 501 is fixedly installed on the top of pretreatment box 2 by bolts. Its output end is coaxially connected to gear 502. When motor 501 is running, it can drive gear 502 to rotate synchronously. Gear 502 meshes with rack 503. Rack 503 is vertically set and has guide protrusions on its side, which slide in cooperation with guide grooves opened in the inner wall of pretreatment box 2 to ensure that rack 503 moves stably in the vertical direction.

[0035] The bottom of the rack 503 is fixedly connected to the rod 505, which is inserted into the cylinder 504, forming a sliding pair. The cylinder 504 provides guidance for the movement of the rod 505. The top of the rod 505 passes through the top of the pretreatment box 2 and is fixedly connected to the top plate 404 of the cleaning mechanism 4. When the motor 501 drives the gear 502 to rotate, the gear 502 drives the rack 503 to move up and down, which in turn drives the top plate 404, connecting rod 403, bracket 401, and cleaning brush 402 to move vertically through the rod 505, thereby cleaning the impurities on the surface of the filter screen 409 by the cleaning brush 402.

[0036] Please see Figure 6 This utility model also includes a steam pipe 6, a connecting pipe 7, a one-way valve 8, a coil 9, and a cover 10. One end of the steam pipe 6 is connected to the steam outlet of the evaporation assembly 1 via a flange, and the other end is welded to the connecting pipe 7. The connecting pipe 7 has an L-shaped structure, and its vertical section end is sealed to the inlet end of the one-way valve 8 via a flange. The outlet end of the one-way valve 8 is welded and fixed to the inlet end of the coil 9.

[0037] The coil 9 is made of seamless stainless steel tubing, spiraling upwards along the inner wall of the pretreatment chamber 2, with a spacing of 50-100mm between adjacent coils. The outlet end of the coil 9 penetrates the side wall of the pretreatment chamber 2 and extends to the outside for draining condensate. The cover 10 is a circular flat plate structure, with its outer diameter matching the inner diameter of the top opening of the pretreatment chamber 2. The edge of the cover 10 is fastened to the edge of the top opening of the pretreatment chamber 2 with bolts.

[0038] The implementation principle of a high-salt water membrane concentration device according to an embodiment of this application is as follows: High-salt water flows into the pretreatment tank 2 through the inlet pipe 3. Multiple filter screens 409 within the tank intercept and filter suspended impurities and particulate matter. The motor 501 of the drive mechanism 5 drives the gear 502 to rotate. Through meshing with the rack 503, the rod 505 drives the top plate 404 to move up and down, thereby driving the cleaning brush 402 to reciprocate vertically, cleaning impurities from the surface of the filter screens 409 and ensuring filtration efficiency.

[0039] The pretreated high-salt water enters the evaporation assembly 1 through the inlet 11, where it is evaporated and concentrated. The secondary steam generated by evaporation enters the coil 9, which is coiled on the inner wall of the pretreatment tank 2, through the steam outlet, steam pipe 6, and connecting pipe 7, under the action of the one-way valve 8. The steam releases heat in the coil 9 to preheat the high-salt water in the tank before condensing and discharging, thus realizing heat recovery and utilization.

[0040] During the concentration process, the MVR system compresses and heats the secondary steam using a steam compressor, then reuses it as a heat source to achieve steam recycling. Finally, the high-salinity water is evaporated and concentrated, achieving the goal of zero-emission treatment.

[0041] When it is necessary to lift the filter screen 409, loosen the bolt 408 and pull the stop block 405 to move it below the frame 410. When the motor 501 is started again, the frame 410 will move upward and lift the filter screen 409, making it easy for the user to clean.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-salt water membrane concentration device, comprising an evaporation assembly (1), a pretreatment chamber (2), an inlet pipe (3), a cleaning mechanism (4), a drive mechanism (5), and an inlet (11), characterized in that, The evaporation assembly (1) is connected to the pretreatment tank (2) through the liquid inlet (11), and the pretreatment tank (2) is connected to the liquid inlet pipe (3). The cleaning mechanism (4) and the driving mechanism (5) are arranged on the pretreatment tank (2). The cleaning mechanism (4) is used to filter impurities in the high saline solution, and the driving mechanism (5) is used to drive the cleaning mechanism (4) to perform self-cleaning.

2. The high-salt water membrane concentration device according to claim 1, characterized in that: It also includes a steam pipe (6), a connecting pipe (7), a one-way valve (8), and a coil (9); The steam pipe (6) is connected to the steam outlet of the evaporation assembly (1), the steam pipe (6) is connected to the connecting pipe (7), the connecting pipe (7) is connected to the coil (9) through the one-way valve (8), and the coil (9) is coiled on the inner wall of the pretreatment box (2).

3. The high-salt water membrane concentration device according to claim 2, characterized in that: It also includes a cover (10) that is fastened to the pretreatment box (2).

4. The high-salt water membrane concentration device according to claim 1, characterized in that: The cleaning mechanism (4) includes multiple filters (409), a frame (410), a top plate (404), a connecting rod (403), a bracket (401), and a cleaning brush (402); Multiple filters (409) are slidably connected to the inner wall of the pretreatment box (2), the top of the multiple filters (409) is connected to the frame (410), the top plate (404) is connected to the bracket (401) through the connecting rod (403), the bracket (401) is connected to the cleaning brush (402), and the driving mechanism (5) can drive the top plate (404) to move in the vertical direction.

5. A high-salt water membrane concentration device according to claim 4, characterized in that: The drive mechanism (5) includes a motor (501), a gear (502), a rack (503), a rod (505), and a cylinder (504); The motor (501) is connected to the pretreatment box (2), the output end of the motor (501) is connected to the gear (502), the gear (502) is meshed with the rack (503), the rack (503) is connected to the rod (505), the rod (505) is slidably connected to the cylinder (504), and the rod (505) is connected to the top plate (404).

6. A high-salt water membrane concentration device according to claim 5, characterized in that: The cleaning mechanism (4) also includes a stop (405), a groove (406), a limiting block (407), and a bolt (408); The groove (406) is formed on the stop (405), the groove (406) is slidably connected to the limiting block (407), the bolt (408) is threadedly connected to the limiting block (407), the bolt (408) abuts against the upper surface of the stop (405), and the stop (405) can extend between the frame (410) and the filter screen (409).

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