Reverse osmosis membrane cleaning device

Abstract

The utility model provides a reverse osmosis membrane cleaning device which comprises a preparation box and a cleaning box, the preparation box is connected with a liquid medicine box, a stirring piece is rotatably connected in the preparation box, the stirring piece is provided with a flow guide cavity, and the stirring piece is connected with a liquid outlet cylinder communicated with the flow guide cavity; the cleaning box is connected with an outlet of the preparation box through a liquid inlet pipe, a spraying assembly and a cleaning ring are arranged in the cleaning box, the spraying assembly is used for washing the reverse osmosis membrane, and the cleaning ring can move up and down to clean the peripheral wall of the reverse osmosis membrane. According to the reverse osmosis membrane cleaning device provided by the embodiment of the invention, liquid medicine is added into the preparation box from the flow guide cavity of the stirring part and the liquid outlet cylinder, so that the dissolving efficiency of the liquid medicine and water is effectively improved, and the subsequent cleaning effect on the reverse osmosis membrane is favorably improved; the cleaning ring capable of moving up and down is used for repeatedly scraping the peripheral wall of the reverse osmosis membrane, so that pollutants adhered to the surface of the membrane are effectively removed, the cleaning quality of the reverse osmosis membrane is improved, and the cleaning time is shortened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to reverse osmosis membrane cleaning equipment technical field, more specifically, relate to a kind of reverse osmosis membrane cleaning device. BACKGROUND

[0002] Reverse osmosis membrane is a kind of artificial semi-permeable membrane with certain characteristics, which is made of biological semi-permeable membrane, and is the core component of reverse osmosis technology. The principle of reverse osmosis technology is to separate water and other substances under the action of higher solution osmotic pressure, according to the principle that other substances cannot penetrate the membrane. Reverse osmosis membrane has been widely used in drinking water purification, medical industry water and industrial wastewater treatment and many other fields.

[0003] With the long-term use of reverse osmosis membrane, a large amount of pollutants will deposit on the membrane surface, which will cause the membrane flux to decrease rapidly and affect the normal use of reverse osmosis system. Therefore, it is necessary to clean the reverse osmosis membrane regularly to restore its performance. In the prior art, chemical cleaning agent is usually used to circulate and flush the membrane element to dissolve and remove the pollutants on the membrane surface. However, during the preparation of the cleaning agent, the chemical agent and water cannot be well mixed and dissolved, resulting in uneven PH value of the cleaning agent, which affects the subsequent cleaning effect and prolongs the cleaning time. In addition, some dirt will adhere to the membrane surface and cannot be removed completely by flushing, which affects the cleaning quality of the membrane. UTILITY MODEL CONTENT

[0004] The utility model embodiment provides a kind of reverse osmosis membrane cleaning device, can effectively improve the dissolving efficiency of liquor and water, simultaneously utilize cleaning ring to effectively remove the pollutants adhered to the membrane surface, improve the cleaning quality of reverse osmosis membrane, shorten cleaning time.

[0005] To achieve the above object, the utility model adopts the technical scheme of: providing a kind of reverse osmosis membrane cleaning device, including the preparation tank for configuring cleaning agent and the cleaning tank for vertically containing and flushing reverse osmosis membrane, the preparation tank is connected with liquor tank, stirring piece is rotatably connected in the preparation tank, the stirring piece has flow guide cavity that is communicated with liquor tank to supply liquor to preparation tank, a plurality of liquid outlet barrels communicated with flow guide cavity are connected on the stirring piece;The cleaning tank is connected with the outlet of preparation tank by inlet pipe, the cleaning tank is equipped with spray assembly connected with inlet pipe and cleaning ring for being sleeved on the outer periphery of reverse osmosis membrane in it, spray assembly is used to flush reverse osmosis membrane, cleaning ring is slidably connected with cleaning tank, and can move up and down to clean the circumferential wall of reverse osmosis membrane.

[0006] As another embodiment of the present application, the stirring part comprises a stirring shaft rotatably connected in the preparation box and extending in the up-down direction, and a plurality of stirring rods connected to the outer periphery of the stirring shaft, the stirring shaft and the stirring rod are hollow tubular members, the flow guide cavity is an inner cavity communicated between the stirring shaft and the stirring rod, the liquid outlet cylinder is connected to the peripheral wall of the stirring rod, and the upper end of the stirring shaft is connected to the liquid tank through a rotary joint.

[0007] As another embodiment of the present application, the liquid outlet cylinder is provided with a one-way liquid outlet structure, the one-way liquid outlet structure comprises a blocking plate for blocking the outlet of the liquid outlet cylinder, a fixed hole plate connected in the liquid outlet cylinder, and an elastic member connected between the blocking plate and the fixed hole plate, the blocking plate can pull down the elastic member under the pressure of the liquid and open the outlet of the liquid outlet cylinder, and the elastic member can elastically pull back the blocking plate to block the outlet of the liquid outlet cylinder when the blocking plate is opened.

[0008] As another embodiment of the present application, the inner side wall of the blocking plate is connected with a guide rod in sliding cooperation with the fixed hole plate, the inner end of the guide rod is connected with a limiting plate located in the flow guide cavity, and the elastic member is sleeved on the outer periphery of the guide rod.

[0009] As another embodiment of the present application, the cleaning box is provided with a sliding ring plate, the cleaning box is provided with a driving assembly for driving the sliding ring plate to slide up and down, the sliding ring plate is provided with a plurality of installation cavities corresponding to the reverse osmosis membranes, and the cleaning ring is connected in the installation cavities.

[0010] As another embodiment of the present application, the driving assembly comprises a driving motor connected to the outer wall of the cleaning box, two sprockets rotatably connected to the inner wall of the cleaning box, and a chain sleeved on the outer periphery of the two sprockets, the output end of the driving motor is connected with one of the sprockets, the two sprockets are arranged in the up-down direction, and the sliding ring plate is connected to the chain through a sliding connecting piece.

[0011] As another embodiment of the present application, the sliding connecting piece comprises a sliding block connected to the chain and a connecting frame connected to the outer periphery of the sliding ring plate, the connecting frame has a sliding arm extending in the horizontal direction, the sliding arm is provided with a sliding groove horizontally penetrating and extending along the direction of the sliding arm, the sliding block is slidingly connected in the sliding groove, and the sliding block can follow the chain to rotate circularly to drive the sliding arm to reciprocatingly move up and down.

[0012] As another embodiment of the present application, the spraying assembly comprises a spraying column arranged at the center of the cleaning box and a plurality of spraying pipes connected to the inner wall of the cleaning box, the lower ends of the spraying column and the spraying pipes are respectively connected to the liquid inlet pipe, and the peripheral walls of the spraying column and the spraying pipes are respectively provided with spraying heads arranged towards the reverse osmosis membranes.

[0013] In another embodiment of this utility model, the top of the cleaning tank is connected to a lid, and the cleaning tank is provided with several sets of installation components for vertically installing reverse osmosis membranes. The installation components include a tray connected to the bottom wall of the cleaning tank, several supports connected to the tray, and several pressure seats connected to the bottom wall of the lid. The pressure seats and supports are arranged vertically and vertically to be engaged with the upper and lower ends of the reverse osmosis membrane. The spray column is connected to the top of the tray.

[0014] In another embodiment of this utility model, a drain pipe is connected to the bottom of the cleaning tank, a wastewater tank is connected to the outlet end of the drain pipe, a first valve is provided on the drain pipe, a circulation branch pipe is connected between the drain pipe and the preparation tank, and a second valve and a filter are provided on the circulation branch pipe.

[0015] The beneficial effects of the reverse osmosis membrane cleaning device provided in this embodiment are as follows: Compared with the prior art, the chemical solution is added to the preparation tank from the guide chamber and outlet cylinder of the agitator, and fully mixed with water under the stirring action of the agitator to form a cleaning agent, which effectively improves the dissolution efficiency of the chemical solution and water, and helps to improve the subsequent cleaning effect on the reverse osmosis membrane; on this basis, multiple reverse osmosis membranes are vertically installed in the cleaning tank, and the reverse osmosis membranes are repeatedly rinsed by the spray assembly. At the same time, the peripheral wall of the reverse osmosis membrane is repeatedly scraped by the cleaning ring that can move up and down, which effectively removes the contaminants adhering to the membrane surface, improves the cleaning quality of the reverse osmosis membrane, and shortens the cleaning time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the reverse osmosis membrane cleaning device provided in this embodiment of the utility model;

[0018] Figure 2 This is an embodiment of the present utility model. Figure 1 Enlarged structural diagram of section A in the middle;

[0019] Figure 3 A cross-sectional view of the cleaning box provided in an embodiment of this utility model;

[0020] Figure 4 This is an embodiment of the present utility model. Figure 3 Enlarged structural diagram of section B.

[0021] In the picture:

[0022] 1, preparation box; 11, stirring rod; 111, flow guide cavity; 12, liquid outlet cylinder; 13, stirring shaft; 14, rotary joint; 15, blocking plate; 16, fixed orifice plate; 17, elastic member; 18, guide rod; 181, limiting plate; 2, cleaning box; 21, tray; 211, support seat; 22, cleaning ring; 23, spray column; 231, spray head; 24, spray pipe; 25, box cover; 251, pressing seat; 3, chemical liquid tank; 4, sliding ring plate; 42, connecting frame; 421, sliding arm; 5, driving assembly; 51, driving motor; 52, chain wheel; 53, chain; 531, sliding block; 6, liquid inlet pipe; 7, drain pipe; 8, wastewater tank; 81, first valve; 9, circulating branch pipe; 91, second valve; 92, filter; 10, reverse osmosis membrane. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0024] It should be noted that when an element is referred to as "disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several" is two or more than two, unless otherwise specifically limited.

[0025] Please see Figures 1 to 4The reverse osmosis membrane cleaning device comprises a preparation box 1 for preparing cleaning agent and a cleaning box 2 for vertically containing and flushing the reverse osmosis membrane 10, the preparation box 1 is connected with a liquid medicine tank 3, a stirring part is rotatably connected in the preparation box 1, the stirring part is provided with a flow guide cavity 111 which is communicated with the liquid medicine tank 3 to supply liquid medicine into the preparation box 1, a plurality of liquid outlet barrels 12 which are communicated with the flow guide cavity 111 are connected to the stirring part, the cleaning box 2 is connected with the outlet of the preparation box 1 through a liquid inlet pipe 6, the cleaning box 2 is provided with a spraying assembly which is connected with the liquid inlet pipe 6 and a cleaning ring 22 which is sleeved on the outer periphery of the reverse osmosis membrane 10, the spraying assembly is used for flushing the reverse osmosis membrane 10, and the cleaning ring 22 is slidably connected with the cleaning box 2 and can move up and down to clean the peripheral wall of the reverse osmosis membrane 10.

[0026] The reverse osmosis membrane cleaning device provided by the embodiment can add the liquid medicine into the preparation box 1 from the flow guide cavity 111 and the liquid outlet barrels 12 of the stirring part, and the liquid medicine is fully mixed with water under the stirring action of the stirring part to form the cleaning agent, so that the dissolution efficiency of the liquid medicine and water is effectively improved, the cleaning effect on the reverse osmosis membrane 10 is improved, and the cleaning time is shortened.

[0027] In the embodiment, the heating coil is arranged on the peripheral wall of the preparation box 1, the temperature of the cleaning agent in the preparation box 1 is increased, and the cleaning effect of the cleaning agent is further improved. The pH meter is arranged on the preparation box 1, the pH value of the cleaning agent is detected in real time, the addition amount of the liquid medicine is controlled according to the measured pH value, the pH value of the cleaning agent is ensured to be within the range of cleaning requirements, and the cleaning effect on the reverse osmosis membrane 10 is ensured.

[0028] As a specific embodiment of the reverse osmosis membrane cleaning device, referring to Figure 1 The stirring part comprises a stirring shaft 13 which is rotatably connected in the preparation box 1 and extends in the up-down direction and a plurality of stirring rods 11 which are connected to the outer periphery of the stirring shaft 13, the stirring shaft 13 and the stirring rods 11 are hollow tubular members, the flow guide cavity 111 is an inner cavity which is communicated between the stirring shaft 13 and the stirring rods 11, the liquid outlet barrels 12 are connected to the peripheral wall of the stirring rods 11, and the upper end of the stirring shaft 13 is connected with the liquid medicine tank 3 through the rotary joint 14.

[0029] In the embodiment, the liquid medicine in the liquid medicine tank 3 enters the flow guide cavity 111 penetrating the stirring shaft 13 and the stirring rod 11 from the upper end of the stirring shaft 13, and then enters the preparation tank 1 through each liquid outlet cylinder 12, at the same time, the stirring shaft 13 drives each stirring rod 11 to rotate, thereby increasing the contact range of the liquid medicine and water and improving the dissolution efficiency.

[0030] Specifically, the top of the preparation tank 1 is connected with a mounting frame, a motor is connected to the mounting frame, a driving gear is connected to the output shaft of the motor, a driven gear is sleeved on the upper end of the stirring shaft 13, and the motor drives the stirring shaft 13 to rotate through the driving gear and the driven gear.

[0031] As a specific embodiment of the reverse osmosis membrane cleaning device provided by the utility model, referring to Figure 2 The liquid outlet cylinder 12 is provided with a one-way liquid outlet structure, the one-way liquid outlet structure comprises a blocking plate 15 used for blocking the outlet of the liquid outlet cylinder 12, a fixed hole plate 16 connected to the liquid outlet cylinder 12 and an elastic element 17 connected between the blocking plate 15 and the fixed hole plate 16, the blocking plate 15 can pull down the elastic element 17 and open the outlet of the liquid outlet cylinder 12 under the pressure of the liquid medicine, and the elastic element 17 can elastically pull back the blocking plate 15 to block the outlet of the liquid outlet cylinder 12 when the blocking plate 15 is opened.

[0032] In the embodiment, when the liquid medicine is added to the preparation tank 1 through the flow guide cavity 111, the pump and the valve connected to the liquid medicine tank 3 are opened, at this time, the pressure of the liquid medicine in the flow guide cavity 111 is greater than the pressure in the preparation tank 1, the liquid medicine pushes the blocking plate 15 to move and open after passing through the fixed hole plate 16 and pulls down the elastic element 17, so that the elastic element 17 is elastically deformed, at this time, the liquid medicine flows out from the annular gap between the blocking plate 15 and the liquid outlet cylinder 12.

[0033] As a specific embodiment of the reverse osmosis membrane cleaning device provided by the utility model, referring to Figure 2 The inner side wall of the blocking plate 15 is connected with a guide rod 18 in sliding cooperation with the fixed hole plate 16, the inner end of the guide rod 18 is connected with a limiting plate 181 located in the flow guide cavity 111, and the elastic element 17 is sleeved on the outer periphery of the guide rod 18.

[0034] In the embodiment, the sliding fit of the guide rod 18 and the fixed hole plate 16 plays a guiding role for the movement of the blocking plate 15, avoids the problem of sealing failure caused by the skewing of the blocking plate 15 when the blocking plate 15 is returned, and the limiting plate 181 at the inner end of the guide rod 18 plays a limiting role for the guide rod 18. When the pressure in the flow guide cavity 111 is relatively large, the outward movement of the guide rod 18 increases, the limiting plate 181 can abut against the inner side wall of the fixed hole plate 16, the guide rod 18 is prevented from sliding off the fixed hole plate 16, and the reliability of the one-way liquid outlet structure is improved.

[0035] As a specific embodiment of the reverse osmosis membrane cleaning device provided by the utility model, referring to Figure 3 , the cleaning box 2 is provided with a sliding ring plate 4, the cleaning box 2 is provided with a driving assembly 5 for driving the sliding ring plate 4 to slide up and down, the sliding ring plate 4 is provided with a plurality of installation cavities corresponding to the reverse osmosis membranes 10 one by one, and the cleaning ring 22 is connected in the installation cavities.

[0036] In the embodiment, the cleaning ring 22 is made of soft material such as cleaning sponge, so as to avoid scratching the peripheral wall of the reverse osmosis membrane 10. A plurality of reverse osmosis membranes 10 are vertically installed in the cleaning box 2, then the sliding ring plate 4 with the cleaning ring 22 is sleeved on the periphery of the plurality of reverse osmosis membranes 10, the driving assembly 5 drives the sliding ring plate 4 to reciprocate up and down along the cleaning box 2, and then the cleaning ring 22 repeatedly scrapes the peripheral wall of the reverse osmosis membrane 10, so that the adhered pollutants on the peripheral wall of the reverse osmosis membrane 10 are completely removed.

[0037] As a specific embodiment of the reverse osmosis membrane cleaning device provided by the utility model, referring to Figure 3 and Figure 4 , the driving assembly 5 comprises a driving motor 51 connected to the outer wall of the cleaning box 2, two sprockets 52 rotatably connected to the inner wall of the cleaning box 2 respectively and a chain 53 sleeved on the periphery of the two sprockets 52, the output end of the driving motor 51 is connected with one of the sprockets 52, the two sprockets 52 are arranged in the up-down direction, and the sliding ring plate 4 is connected to the chain 53 through a sliding connecting piece.

[0038] In the embodiment, since the two sprockets 52 are arranged in the up-down direction, when the driving motor 51 drives the sprockets 52 to rotate, the chain 53 can be circularly rotated in the vertical direction, and then the up-down reciprocating motion of the sliding ring plate 4 is converted through the sliding connecting piece, so as to repeatedly scrub the peripheral wall of the reverse osmosis membrane 10.

[0039] As a specific embodiment of the reverse osmosis membrane cleaning device provided by the utility model, referring to Figure 4The sliding connecting piece comprises a sliding block 531 connected to the chain 53 and a connecting frame 42 connected to the outer periphery of the sliding ring plate 4, the connecting frame 42 is provided with a sliding arm 421 extending in the horizontal direction, the sliding arm 421 is provided with a sliding groove extending along the direction of the sliding arm 421, and the sliding block 531 is slidably connected to the sliding groove, and the sliding block 531 can rotate along with the chain 53 to drive the sliding arm 421 to move up and down reciprocatingly.

[0040] In the embodiment, the sliding block 531 is fixed on the chain 53 and rotates synchronously with the chain 53, when the sliding block 531 translates from one sprocket 52 to another sprocket 52 along with the chain 53, the sliding arm 421 is driven to translate up and down, and when the sliding block 531 rotates along the axis of one of the sprockets 52 along with the chain 53, the sliding block 531 simultaneously slides in the sliding groove of the sliding arm 421, and simultaneously drives the sliding arm 421 to move slightly in the vertical direction. Through the above arrangement, the rotary motion of the driving motor 51 is converted into the up and down reciprocating linear motion of the sliding ring plate 4, and the reverse scrubbing of the circumferential wall of the reverse osmosis membrane 10 is realized.

[0041] As a specific embodiment of the reverse osmosis membrane cleaning device, referring to Figure 1 and Figure 3 , the spraying assembly comprises a spraying column 23 arranged at the axis of the cleaning box 2 and a plurality of spraying pipes 24 connected to the inner wall of the cleaning box 2, the lower ends of the spraying column 23 and the spraying pipes 24 are connected to the liquid inlet pipe 6, and the circumferential walls of the spraying column 23 and the spraying pipes 24 are each provided with a plurality of spraying heads 231 arranged towards the reverse osmosis membrane 10.

[0042] In the embodiment, the liquid inlet pipe 6 guides the cleaning agent in the preparation box 1 into the spraying column 23 and the plurality of spraying pipes 24, and washes the reverse osmosis membrane 10 through the spraying heads 231. The spraying column 23 is located in the middle of the cleaning box 2, and the plurality of spraying heads 231 on the circumferential wall thereof are arranged in a diverging manner to simultaneously wash the plurality of reverse osmosis membranes 10 around. The plurality of spraying pipes 24 are arranged on the inner wall of the cleaning box 2 at intervals to wash the reverse osmosis membrane 10 from multiple angles.

[0043] As a specific embodiment of the reverse osmosis membrane cleaning device, referring to Figure 1 , the top of the cleaning box 2 is connected to a box cover 25, the cleaning box 2 is provided with a plurality of installation assemblies for vertically installing the reverse osmosis membrane 10, the installation assembly comprises a tray 21 connected to the inner bottom wall of the cleaning box 2, a plurality of supporting seats 211 connected to the tray 21, and a plurality of pressing seats 251 connected to the bottom wall of the box cover 25, the pressing seats 251 and the supporting seats 211 are arranged one by one in a vertical correspondence, and are used for clamping the upper and lower ends of the reverse osmosis membrane 10, and the spraying column 23 is connected above the tray 21.

[0044] In the embodiment, the tray 21 is detachably connected with the bottom wall of the cleaning tank 2, such as threaded connection, facilitating simultaneous dismounting of the plurality of holders 211 to clean the bottom wall of the cleaning tank 2, in addition, the provision of the tray 21 provides space for connection of the plurality of spray pipes 24, facilitating collection of the lower ends of the plurality of spray pipes 24 and spray columns 23 together and connection with the liquid inlet pipe 6.

[0045] When installing the reverse osmosis membranes 10, first open the tank cover 25, load the plurality of reverse osmosis membranes 10 into the cleaning tank 2 from top to bottom, make the lower ends of the reverse osmosis membranes 10 correspondingly installed on the holders 211, then set the sliding ring plate 4 on the outer periphery of the reverse osmosis membranes 10, cover the tank cover 25 on the top of the cleaning tank 2, and make the pressing seats 251 on the tank cover 25 correspondingly press and fit the upper ends of the reverse osmosis membranes 10, to ensure reliable installation of the reverse osmosis membranes 10. Further, a sealing ring is arranged between the tank cover 25 and the cleaning tank 2 and locked by a lock buckle.

[0046] As a specific embodiment of the reverse osmosis membrane cleaning device provided by the utility model, referring to Figure 1 The bottom of the cleaning tank 2 is connected with a drain pipe 7, the outlet end of the drain pipe 7 is connected with a wastewater tank 8, the drain pipe 7 is provided with a first valve 81, and the drain pipe 7 is connected with the preparation tank 1 through a circulating branch pipe 9, the circulating branch pipe 9 is provided with a second valve 91 and a filter 92.

[0047] In the embodiment, a large amount of sewage is discharged in the initial stage of cleaning the reverse osmosis membranes 10, at this time, the first valve 81 is opened, and the sewage flows into the wastewater tank 8. With the progress of the cleaning process, the pollutants in the sewage are gradually reduced, at this time, the first valve 81 is closed, and the second valve 91 is opened, so that the sewage enters the preparation tank 1 after being filtered by the filter 92, realizing recycling of the cleaning liquid.

[0048] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A reverse osmosis membrane cleaning device, characterized in that, The device includes a preparation tank for preparing cleaning agents and a cleaning tank for vertically containing and rinsing a reverse osmosis membrane. The preparation tank is connected to a chemical solution tank, and a stirring element is rotatably connected inside the preparation tank. The stirring element has a guide cavity that communicates with the chemical solution tank to supply the chemical solution into the preparation tank. Several outlet cylinders communicating with the guide cavity are connected to the stirring element. The cleaning tank is connected to the outlet of the preparation tank through an inlet pipe. The cleaning tank is equipped with a spray assembly connected to the inlet pipe and a cleaning ring for fitting around the outer periphery of the reverse osmosis membrane. The spray assembly is used to rinse the reverse osmosis membrane, and the cleaning ring slides in conjunction with the cleaning tank and can move up and down to clean the peripheral wall of the reverse osmosis membrane.

2. The reverse osmosis membrane cleaning device as described in claim 1, characterized in that, The stirring component includes a stirring shaft rotatably connected to the preparation tank and extending in the vertical direction, and a plurality of stirring rods connected to the outer periphery of the stirring shaft. The stirring shaft and the stirring rods are both hollow tubular components. The flow guiding cavity is an inner cavity in which the stirring shaft and the stirring rods communicate with each other. The liquid outlet cylinder is connected to the peripheral wall of the stirring rods. The upper end of the stirring shaft is connected to the medicine tank through a rotary joint.

3. The reverse osmosis membrane cleaning device as described in claim 2, characterized in that, The liquid outlet cylinder is equipped with a one-way liquid outlet structure, which includes a blocking plate for sealing the outlet of the liquid outlet cylinder, a fixed perforated plate connected inside the liquid outlet cylinder, and an elastic element connected between the blocking plate and the fixed perforated plate. The blocking plate can pull down the elastic element under the pressure of the liquid and open the outlet of the liquid outlet cylinder. The elastic element can elastically pull back the blocking plate when the blocking plate is opened to seal the outlet of the liquid outlet cylinder.

4. The reverse osmosis membrane cleaning device as described in claim 3, characterized in that, A guide rod that slides with the fixed hole plate is connected to the inner side wall of the blocking plate. The inner end of the guide rod is connected to a limiting plate located in the flow guiding cavity. The elastic element is sleeved on the outer periphery of the guide rod.

5. The reverse osmosis membrane cleaning device as described in claim 1, characterized in that, The cleaning tank is equipped with a sliding ring plate, and the cleaning tank is equipped with a drive assembly for moving the sliding ring plate up and down. The sliding ring plate is equipped with a plurality of mounting cavities corresponding one-to-one with the reverse osmosis membrane, and the cleaning ring is connected to the mounting cavity.

6. The reverse osmosis membrane cleaning device as described in claim 5, characterized in that, The drive assembly includes a drive motor connected to the outer wall of the cleaning tank, two sprockets rotatably connected to the inner wall of the cleaning tank, and a chain sleeved around the outer periphery of the two sprockets. The output end of the drive motor is connected to one of the sprockets. The two sprockets are spaced apart in the vertical direction. The sliding ring plate is connected to the chain through a sliding connector.

7. A reverse osmosis membrane cleaning device as described in claim 6, characterized in that, The sliding connector includes a slider connected to the chain and a connecting frame connected to the outer periphery of the sliding ring plate. The connecting frame has a sliding arm extending in a horizontal direction. The sliding arm has a horizontally penetrating groove extending along its direction. The slider is slidably connected in the groove. The slider can rotate cyclically with the chain to drive the sliding arm to move up and down reciprocally.

8. The reverse osmosis membrane cleaning device as described in claim 1, characterized in that, The spray assembly includes a spray column disposed at the axis of the cleaning tank and a plurality of spray pipes connected to the inner wall of the cleaning tank. The lower ends of the spray column and the spray pipes are respectively connected to the liquid inlet pipe. Spray heads facing the reverse osmosis membrane are provided on the peripheral walls of the spray column and the spray pipes.

9. A reverse osmosis membrane cleaning device as described in claim 8, characterized in that, The top of the cleaning tank is connected to a lid. Inside the cleaning tank are several sets of installation components for vertically installing reverse osmosis membranes. The installation components include a tray connected to the bottom wall of the cleaning tank, several supports connected to the tray, and several pressure seats connected to the bottom wall of the lid. The pressure seats and supports are arranged vertically and vertically to engage with the upper and lower ends of the reverse osmosis membrane. The spray column is connected above the tray.

10. A reverse osmosis membrane cleaning device as described in claim 1, characterized in that, The bottom of the cleaning tank is connected to a drain pipe, the outlet end of the drain pipe is connected to a wastewater tank, a first valve is provided on the drain pipe, a circulation branch pipe is connected between the drain pipe and the preparation tank, and a second valve and a filter are provided on the circulation branch pipe.

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