A spiral-wound membrane device for desalination and concentration of solutions

Abstract

The utility model discloses a kind of for solution desalination concentration roll type membrane equipment, belong to solution desalination concentration technical field, its technical scheme main points include base, the left side of base top is provided with roll type membrane equipment body, the right side of base top is provided with pretreatment component and backwashing component, the pretreatment component includes treatment tank, the inner chamber of treatment tank is provided with filter screen plate, the side of filter screen plate close to treatment tank inner wall is fixedly connected with the inner wall of treatment tank, it is solved before existing in solution enters the roll type membrane group of roll type membrane equipment, usually need to filter solution in advance, avoid the impurity particle in solution and plug membrane hole or scratch the active layer of membrane surface when high pressure flows, and the filter processing structure of existing roll type membrane equipment lacks anti-blocking structure, to cause blockage easily in the process of filter processing, and it is inconvenient to clean the impurity particle of interception filtration, bring the problem of inconvenience to operator.

Description

Technical Field

[0001] This utility model relates to the field of solution desalination and concentration technology, and in particular to a spiral wound membrane device for solution desalination and concentration. Background Technology

[0002] Solution desalination and concentration is a process that removes salts (such as ions and small molecule electrolytes) from a solution and simultaneously increases the concentration of the target solute in the solution through physical, chemical, or membrane separation techniques. It is widely used in seawater desalination, industrial wastewater treatment, food processing, and pharmaceutical purification. Its core is to achieve the synergistic completion of the two goals of salt separation and solute enrichment.

[0003] There are many existing membrane experimental devices and industrial equipment used for desalination, but they still have problems such as complex structure, high cost, inconvenient operation, and time-consuming and labor-intensive testing, which need to be further improved and perfected.

[0004] The existing patent (publication number: CN212283583U) provides a spiral wound membrane device for solution desalination and concentration, including a feed tank, a spiral wound membrane module, and an industrial control computer. The feed tank is connected to the spiral wound membrane module and includes an outer tank and a filter assembly. The filter assembly in the feed tank can filter out impurities in the feed solution and provide feed solution for the spiral wound membrane module. The industrial control computer detects and controls the spiral wound membrane device through its internal operating system. The spiral wound membrane module is installed on the outer wall of the industrial control computer. The spiral wound membrane module is also equipped with a permeate storage tank to monitor the permeate conductivity in real time, eliminating the need for multiple sampling and testing operations. The degree of desalination and whether it is qualified can be directly judged based on the conductivity. The entire device is easy to connect, practical, exquisite and beautiful, compact in structure, and has a small feed solution circulation volume, saving materials when conducting small-scale experiments. Process parameters can be automatically monitored at any time, resulting in high efficiency.

[0005] To address the aforementioned issues, existing patents offer solutions. Currently, before the solution enters the spiral wound membrane module of a spiral wound membrane device, the solution typically needs to be pre-filtered to prevent impurities in the solution from clogging the membrane pores or scratching the active layer on the membrane surface during high-pressure flow. However, the existing filtration structure of spiral wound membrane devices lacks an anti-clogging structure, which easily leads to clogging during the filtration process and makes it difficult to clean the intercepted impurities, causing inconvenience to operators.

[0006] Therefore, a spiral wound membrane device for solution desalination and concentration is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a spiral wound membrane device for solution desalination and concentration, which solves the problem that existing spiral wound membrane devices usually require pre-filtration of the solution before it enters the spiral wound membrane assembly to prevent impurities in the solution from clogging the membrane pores or scratching the active layer on the membrane surface during high-pressure flow. However, the existing spiral wound membrane devices lack anti-clogging structures, which easily cause clogging during the filtration process and make it difficult to clean the intercepted impurities, causing inconvenience to operators.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a spiral wound membrane device for solution desalination and concentration, comprising a base, wherein the spiral wound membrane device body is disposed on the left side of the top of the base, and a pretreatment component and a backwashing component are disposed on the right side of the top of the base;

[0009] The pretreatment assembly includes a treatment tank, the inner cavity of which is provided with a filter plate. The side of the filter plate near the inner wall of the treatment tank is fixedly connected to the inner wall of the treatment tank. A drive motor is fixedly connected to the right side of the treatment tank. A transmission rod is fixedly connected to the output shaft of the drive motor. The left side of the transmission rod passes through the treatment tank and the filter plate in sequence. An anti-clogging scraper is fixedly connected to the surface of the transmission rod. The side of the anti-clogging scraper near the filter plate is in contact with the filter plate.

[0010] Preferably, the backwashing assembly includes a water collection tray located on the left side of the inner cavity of the treatment tank, and a plurality of backwashing nozzles are connected to the side of the water collection tray near the filter plate.

[0011] Preferably, the top of the water collection tray is connected to a water inlet pipe, the top of the water inlet pipe extends through to the top of the treatment tank and is connected to an external water pipe, and the surface of the water inlet pipe is fixedly connected to the inner wall of the treatment tank.

[0012] Preferably, a fixing block is fixedly connected to both the front and rear sides of the water collection tray, and the side of the fixing block closest to the inner wall of the treatment tank is fixedly connected to the inner wall of the treatment tank.

[0013] Preferably, the right side of the top of the treatment tank is connected to an inlet pipe, and an inlet valve is provided on the front side of the inlet pipe.

[0014] Preferably, a collection hopper is connected to the right side of the bottom of the treatment tank, a drain pipe is connected to the bottom of the collection hopper, and a drain valve is provided at the front of the drain pipe.

[0015] Preferably, an infusion pipe is connected to the left side of the bottom of the treatment tank, and an infusion valve is provided on the front side of the infusion pipe near the end of the treatment tank.

[0016] Preferably, the other end of the infusion tube is connected to a pressure pump, the outlet of the pressure pump is connected to a connecting pipe, and the other end of the connecting pipe is connected to the inlet pipe of the spiral wound membrane assembly of the spiral wound membrane device body.

[0017] Preferably, both the right side of the treatment tank and the right side of the filter plate are provided with movable holes for use with the transmission rod, and the surface of the transmission rod is rotatably connected to the inner wall of the movable hole through a sealed bearing.

[0018] Preferably, the front and rear sides of the processing tank are fixedly connected to support legs, and the bottom of the support legs is fixedly connected to the top of the base.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. By setting up a pretreatment component, this application can perform pre-filtration treatment on the solution before it enters the spiral wound membrane module of the spiral wound membrane equipment body, filter out impurity particles in the solution, and prevent impurity particles from clogging the membrane pores of the spiral wound membrane module or scratching the active layer on the membrane surface during high-pressure flow. Furthermore, through the corresponding anti-clogging structure design, it can effectively prevent the clogging of the filtration structure during the pretreatment process and reduce the problem of reduced treatment efficiency caused by clogging.

[0021] 2. This application, through the setting of the backwashing component, can perform backwashing and cleaning of impurity particles intercepted and filtered during pretreatment without disassembling related parts, thus bringing convenience to the operator's cleaning work. Attached Figure Description

[0022] Figure 1 This is an overall structural diagram of the spiral wound membrane device for solution desalination and concentration according to this utility model;

[0023] Figure 2 This is a cross-sectional view of the processing tank in this utility model;

[0024] Figure 3 In this utility model Figure 2 Structure diagram of the preprocessing component;

[0025] Figure 4 This is a structural diagram of the backwashing assembly in this utility model;

[0026] Figure 5 This is a structural diagram of the treatment tank and filter plate in this utility model.

[0027] In the diagram: 1. Base; 2. Spiral membrane equipment body; 3. Pretreatment component; 31. Treatment tank; 32. Filter screen; 33. Drive motor; 34. Transmission rod; 35. Anti-clogging scraper; 4. Backwashing component; 41. Water collection tray; 42. Backwashing nozzle; 43. Water inlet pipe; 44. External water pipe; 45. Fixing block; 5. Liquid inlet pipe; 6. Liquid inlet valve; 7. Impurity collection hopper; 8. Sewage pipe; 9. Sewage valve; 10. Infusion pipe; 11. Infusion valve; 12. Pressure pump; 13. Connecting pipe; 14. Movable hole; 15. Support leg. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-5 The present invention provides the following technical solution:

[0030] A spiral wound membrane device for solution desalination and concentration includes a base 1, a spiral wound membrane device body 2 disposed on the left side of the top of the base 1, and a pretreatment component 3 and a backwashing component 4 disposed on the right side of the top of the base 1.

[0031] The pretreatment component 3 includes a treatment tank 31. A filter plate 32 is provided in the inner cavity of the treatment tank 31. The side of the filter plate 32 near the inner wall of the treatment tank 31 is fixedly connected to the inner wall of the treatment tank 31. A drive motor 33 is fixedly connected to the right side of the treatment tank 31. A transmission rod 34 is fixedly connected to the output shaft of the drive motor 33. The left side of the transmission rod 34 passes through the treatment tank 31 and the filter plate 32 in sequence. An anti-clogging scraper 35 is fixedly connected to the surface of the transmission rod 34. The side of the anti-clogging scraper 35 near the filter plate 32 contacts the filter plate 32.

[0032] In this embodiment: by setting up a base 1, a spiral wound membrane device body 2, a pretreatment component 3, and a backwashing component 4, the base 1 provides a supporting foundation for the entire device during use. The spiral wound membrane device body 2 enables desalination and concentration of the solution using membrane separation technology. The pretreatment component 3 pre-filters the solution before it enters the spiral wound membrane assembly of the spiral wound membrane device body 2, filtering out impurities and preventing them from clogging the membrane pores or scratching the active layer on the membrane surface during high-pressure flow. Furthermore, the anti-clogging structure design effectively prevents clogging of the filtration structure during pretreatment, reducing the decrease in processing efficiency caused by clogging. The backwashing component 4 cleans the impurities intercepted and filtered during pretreatment without disassembling related components, thus simplifying the cleaning process for operators.

[0033] Specifically, such as Figure 2 , Figure 4 As shown, the backwashing assembly 4 includes a water collection tray 41, which is located on the left side of the inner cavity of the treatment tank 31. Multiple backwashing nozzles 42 are connected to the side of the water collection tray 41 near the filter screen plate 32.

[0034] Specifically, such as Figure 1 , Figure 2 , Figure 4 As shown, the top of the water collection tray 41 is connected to a water inlet pipe 43, the top of the water inlet pipe 43 extends through to the top of the treatment tank 31 and is connected to an external water pipe 44, and the surface of the water inlet pipe 43 is fixedly connected to the inner wall of the treatment tank 31.

[0035] Specifically, such as Figure 2 , Figure 4 As shown, fixing blocks 45 are fixedly connected to both the front and rear sides of the water collection tray 41. The side of the fixing block 45 closest to the inner wall of the treatment tank 31 is fixedly connected to the inner wall of the treatment tank 31.

[0036] In this embodiment, by setting up a water collection tray 41, backwash nozzles 42, an inlet pipe 43, an external water pipe 44, and a fixing block 45, in use, by connecting the external water pipe 44 to a water source, water enters the water collection tray 41 through the external water pipe 44 and the inlet pipe 43, and then sprays it onto the back-retention surface of the filter screen 32 through multiple backwash nozzles 42, thereby realizing the backwashing and cleaning of impurities filtered by the retention surface of the filter screen 32. This is relatively convenient and brings convenience to the operator's cleaning work. The fixing block 45 can support and fix the water collection tray 41.

[0037] Specifically, such as Figure 1 , Figure 2 As shown, the right side of the top of the treatment tank 31 is connected to the inlet pipe 5, and the inlet valve 6 is provided on the front side of the inlet pipe 5.

[0038] Specifically, such as Figure 1 , Figure 2 As shown, a collection hopper 7 is connected to the right side of the bottom of the treatment tank 31, and a drain pipe 8 is connected to the bottom of the collection hopper 7. A drain valve 9 is provided on the front side of the drain pipe 8.

[0039] In this embodiment: by setting an inlet pipe 5, the solution that needs to be pretreated enters the treatment tank 31. By setting an inlet valve 6, the inlet pipe 5 can be opened and closed. By setting a collection hopper 7, some impurities that fall off during the filtration process can be collected and intercepted. By setting a drain pipe 8, the collected impurities can be discharged conveniently, and impurities and backwash wastewater can be discharged when backwashing the filter screen 32. By setting a drain valve 9, the drain pipe 8 can be opened and closed.

[0040] Specifically, such as Figure 1 , Figure 2 As shown, an infusion pipe 10 is connected to the left side of the bottom of the treatment tank 31, and an infusion valve 11 is provided on the front side of the infusion pipe 10 near the end of the treatment tank 31.

[0041] Specifically, such as Figure 1 , Figure 2 As shown, the other end of the infusion pipe 10 is connected to a pressure pump 12, and the outlet of the pressure pump 12 is connected to a connecting pipe 13. The other end of the connecting pipe 13 is connected to the inlet pipe of the spiral wound membrane assembly of the spiral wound membrane equipment body 2.

[0042] In this embodiment: by setting up the infusion pipe 10, the pre-filtered solution can be discharged and transported from the treatment tank 31. By setting up the infusion valve 11, the infusion pipe 10 can be opened and closed. By setting up the pressurization pump 12 and the connecting pipe 13, the pre-filtered solution can be pressurized and transported to the inlet pipe of the spiral wound membrane assembly of the spiral wound membrane equipment body 2.

[0043] Specifically, such as Figure 5 As shown, both the right side of the treatment tank 31 and the right side of the filter plate 32 are provided with movable holes 14 that cooperate with the transmission rod 34. The surface of the transmission rod 34 and the inner wall of the movable hole 14 are rotatably connected by a sealed bearing.

[0044] Specifically, such as Figure 1 , Figure 2 As shown, support legs 15 are fixedly connected to both the front and rear sides of the processing tank 31, and the bottom of the support legs 15 is fixedly connected to the top of the base 1.

[0045] In this embodiment: by providing the movable hole 14, the transmission rod 34 can pass through the processing tank 31 and the filter plate 32 and rotate easily through the bearing; by providing the support leg 15, the processing tank 31 can be supported and fixed.

[0046] Working Principle: In operation, first, open the inlet valve 6 on the inlet pipe 5 on the top right side of the treatment tank 31, then inject the solution into the treatment tank 31 through the inlet pipe 5. At this time, the solution is pre-filtered through the filter screen 32, intercepting impurities and preventing them from entering the spiral wound membrane assembly of the spiral wound membrane device body 2 and clogging the membrane pores or scratching the active layer on the membrane surface during high-pressure flow. Simultaneously with filtration, the drive motor 33 can be started, causing its output shaft to drive the transmission rod 34 to rotate. The transmission rod 34 then drives the anti-clogging scraper 35 to rotate. The rotation of the anti-clogging scraper 35 continuously scrapes the interception surface of the filter screen 32, effectively preventing clogging during pretreatment and reducing the decrease in processing efficiency caused by clogging. The filtered solution then passes through the filter screen 32. At this point, open the inlet valve 11 on the inlet pipe 10 on the bottom left side of the treatment tank 31, allowing the filtered solution to enter the pressure pump 12 through the inlet pipe 10. The pressurizing pump 12 can be started to pressurize and deliver the solution to the inlet pipe of the spiral wound membrane assembly in the spiral wound membrane device body 2 via the connecting pipe 13. The solution can then be desalinated and concentrated using the membrane separation technology of the spiral wound membrane device body 2. Later, when it is necessary to clean the filtered impurities and filter screen 32, the inlet valve 6 on the inlet pipe 5 and the delivery valve 11 on the delivery pipe 10 can be closed to seal the inlet pipe 5 and delivery pipe 10. Then, the drain valve 9 on the drain pipe 8 can be opened. Impurities in the bottom collection hopper 7 of the treatment tank 31 can be discharged through the drain pipe 8. At the same time, by connecting the external water pipe 44 to the water source, water can enter the water collection tray 41 through the external water pipe 44 and the inlet pipe 43. Then, it can be sprayed onto the back-retention surface of the filter screen plate 32 through multiple backwash nozzles 42 to achieve backwash cleaning of the impurities filtered by the retention surface of the filter screen plate 32. Then, the backwash wastewater and impurities are discharged through the drain pipe 8. The operation is relatively convenient, which brings convenience to the cleaning work of the operators.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spiral wound membrane device for solution desalination and concentration, comprising a base (1), characterized in that: The base (1) has a spiral membrane device body (2) on the left side of the top and a pretreatment component (3) and a backwashing component (4) on the right side of the top. The pretreatment component (3) includes a treatment tank (31), and a filter plate (32) is provided in the inner cavity of the treatment tank (31). The side of the filter plate (32) near the inner wall of the treatment tank (31) is fixedly connected to the inner wall of the treatment tank (31). A drive motor (33) is fixedly connected to the right side of the treatment tank (31). A transmission rod (34) is fixedly connected to the output shaft of the drive motor (33). The left side of the transmission rod (34) passes through the treatment tank (31) and the filter plate (32) in sequence. An anti-clogging scraper (35) is fixedly connected to the surface of the transmission rod (34). The side of the anti-clogging scraper (35) near the filter plate (32) contacts the filter plate (32).

2. The spiral wound membrane device for solution desalination and concentration according to claim 1, characterized in that: The backwash assembly (4) includes a water collection tray (41) located on the left side of the inner cavity of the treatment tank (31), and a plurality of backwash nozzles (42) are connected to the side of the water collection tray (41) near the filter plate (32).

3. A spiral wound membrane device for solution desalination and concentration according to claim 2, characterized in that: The top of the water collection tray (41) is connected to a water inlet pipe (43), the top of the water inlet pipe (43) extends through to the top of the treatment tank (31) and is connected to an external water pipe (44), and the surface of the water inlet pipe (43) is fixedly connected to the inner wall of the treatment tank (31).

4. A spiral wound membrane device for solution desalination and concentration according to claim 2, characterized in that: The front and rear sides of the water collection tray (41) are fixedly connected to a fixing block (45), and the side of the fixing block (45) near the inner wall of the treatment tank (31) is fixedly connected to the inner wall of the treatment tank (31).

5. A spiral wound membrane device for solution desalination and concentration according to claim 1, characterized in that: The top right side of the processing tank (31) is connected to an inlet pipe (5), and an inlet valve (6) is provided on the front side of the inlet pipe (5).

6. A spiral wound membrane device for solution desalination and concentration according to claim 1, characterized in that: The bottom right side of the treatment tank (31) is connected to a collection hopper (7), the bottom of the collection hopper (7) is connected to a drain pipe (8), and a drain valve (9) is provided on the front side of the drain pipe (8).

7. A spiral wound membrane device for solution desalination and concentration according to claim 1, characterized in that: The bottom left side of the treatment tank (31) is connected to an infusion pipe (10), and an infusion valve (11) is provided on the front side of the infusion pipe (10) near the end of the treatment tank (31).

8. A spiral wound membrane device for solution desalination and concentration according to claim 7, characterized in that: The other end of the infusion pipe (10) is connected to a pressure pump (12), the outlet of the pressure pump (12) is connected to a connecting pipe (13), and the other end of the connecting pipe (13) is connected to the inlet pipe of the spiral wound membrane assembly of the spiral wound membrane device body (2).

9. A spiral wound membrane device for solution desalination and concentration according to claim 1, characterized in that: The right side of the treatment tank (31) and the right side of the filter plate (32) are provided with movable holes (14) that cooperate with the transmission rod (34). The surface of the transmission rod (34) and the inner wall of the movable hole (14) are rotatably connected by a sealed bearing.

10. A spiral wound membrane device for solution desalination and concentration according to claim 1, characterized in that: The processing tank (31) has support legs (15) fixedly connected to both the front and rear sides, and the bottom of the support legs (15) is fixedly connected to the top of the base (1).

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