Reverse osmosis membrane cleaning equipment

Abstract

The utility model discloses reverse osmosis membrane cleaning equipment, and relates to cleaning of reverse osmosis membranes. The reverse osmosis membrane element cleaning device comprises a pipeline assembly and a pressing mechanism, the pipeline assembly comprises one or more sets of connecting mechanisms used for being connected with a reverse osmosis membrane element to be cleaned, and each connecting mechanism comprises a first connecting cover used for being arranged at the first end of the reverse osmosis membrane element in a sleeving mode and a second connecting cover used for being arranged at the second end of the reverse osmosis membrane element in a sleeving mode; the first connecting cover and / or the second connecting cover are / is connected with the reverse osmosis membrane element in a sliding fit manner and can slide along the axis direction of the reverse osmosis membrane element; the pressing mechanism is used for driving the first connecting cover and the second connecting cover to press the two ends of the reverse osmosis membrane element. The reverse osmosis membrane element is placed on the connecting mechanism, and the pressing mechanism drives the first connecting cover and the second connecting cover to press the two ends of the reverse osmosis membrane element, so that the reverse osmosis membrane element is automatically sealed, the reverse osmosis membrane element is conveniently connected, and the connecting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the cleaning of a reverse osmosis membrane, in particular to a reverse osmosis membrane cleaning device. Background Art

[0002] The reverse osmosis membrane element comprises a shell, a central tube arranged in the shell, and a reverse osmosis membrane located between the central tube and the shell. The reverse osmosis membrane is spirally wound around the periphery of the central tube.

[0003] The reverse osmosis membrane in the reverse osmosis membrane element can separate soluble substances in water and is widely used in sewage treatment. However, after a long period of filtration, the soluble substances in the water will accumulate in the reverse osmosis membrane, affecting the separation of water and soluble substances.

[0004] At present, the offline cleaning method is generally adopted, and the reverse osmosis membrane element is connected to the pipeline of the external cleaning device for cleaning. However, the structure of the external pipeline used to connect the reverse osmosis membrane element is relatively complicated, and the reverse osmosis membrane element is inconvenient to install. Especially when multiple reverse osmosis membrane elements need to be cleaned at the same time, it takes a lot of time to connect the reverse osmosis membrane element in the pipeline.

[0005] The above contents are only used to help understand the technical solution of this application and do not constitute an admission that the above contents are prior art. Utility Model Content

[0006] The utility model aims to provide a reverse osmosis membrane cleaning device, which can conveniently access the reverse osmosis membrane element and improve the access efficiency.

[0007] In order to achieve the above utility model purpose, the utility model proposes a reverse osmosis membrane cleaning device, which includes:

[0008] A pipeline assembly, comprising one or more than two connecting mechanisms for connecting to a reverse osmosis membrane element to be cleaned, the connecting mechanisms comprising a first connecting cover for sleeved on a first end of the reverse osmosis membrane element and a second connecting cover for sleeved on a second end of the reverse osmosis membrane element, the first connecting cover and / or the second connecting cover being slidably matched with the reverse osmosis membrane element and being able to slide along the axial direction of the reverse osmosis membrane element; and

[0009] The pressing mechanism is used to drive the first connecting cover and the second connecting cover to press the two ends of the reverse osmosis membrane element.

[0010] Furthermore, during cleaning, the reverse osmosis membrane element is vertically arranged, the first connecting cover is located at the bottom of the reverse osmosis membrane element, the second connecting cover is located at the top of the reverse osmosis membrane element, the first connecting cover and the second connecting cover both have insertion ports for inserting the reverse osmosis membrane element, the insertion port of the first connecting cover is arranged upward, and the insertion port of the second connecting cover is arranged downward.

[0011] Furthermore, the clamping mechanism includes a fixed frame, a movable frame connected to the second connecting cover, and a linear drive device for driving the movable frame to perform linear motion relative to the fixed frame. The first connecting cover is relatively fixed to the fixed frame. Under the drive of the linear drive device, the movable frame moves along the axial direction of the reverse osmosis membrane element so that the second connecting cover is sleeved on the reverse osmosis membrane element.

[0012] Furthermore, the linear drive device is electrically connected to a controller of the reverse osmosis membrane cleaning device, and the controller adjusts the driving force of the linear drive device according to the liquid pressure of the cleaning agent input into the reverse osmosis membrane element.

[0013] Furthermore, the pipeline assembly includes more than two groups of connection mechanisms for connecting the reverse osmosis membrane elements to be cleaned, and the reverse osmosis membrane elements connected to the pipeline assembly are arranged in parallel;

[0014] The movable frame is simultaneously connected to the second connection covers of at least two groups of connection mechanisms.

[0015] Furthermore, the first connection cover and the second connection cover each include a cavity and an outer ring portion for enclosing the outer periphery of the reverse osmosis membrane element;

[0016] The outer ring portion is sealed and connected to the outer wall of the reverse osmosis membrane element, and the space enclosed by the outer ring portion forms an insertion port for inserting the reverse osmosis membrane element.

[0017] Furthermore, the cavity is at least partially communicated with the area between the shell and the central tube of the reverse osmosis membrane element, and the reverse osmosis membrane of the reverse osmosis membrane element is located between the shell and the central tube.

[0018] Furthermore, a sealing ring is provided on the inner wall of the outer ring portion, and the sealing ring is provided with a convex ring located outside the outer ring portion, and the convex ring is arranged opposite to the end surface of the outer ring portion.

[0019] Furthermore, the first connection cover and the second connection cover each include a support plate connected to the outer ring portion, the cavity and the outer ring portion are respectively located on both sides of the support plate, and the support plate is used to abut against the end of the reverse osmosis membrane element to limit the reverse osmosis membrane element.

[0020] Furthermore, the first end of the reverse osmosis membrane element is used for the entry of a cleaning agent, and the second end of the reverse osmosis membrane element is used for the discharge of liquid inside the reverse osmosis membrane element;

[0021] The first end of the reverse osmosis membrane element is the water outlet end when the reverse osmosis membrane element performs filtering work, and the second end of the reverse osmosis membrane element is the water inlet end when the reverse osmosis membrane element performs filtering work;

[0022] When the reverse osmosis membrane element is cleaned, the end of the central tube of the reverse osmosis membrane element located at the first end is blocked.

[0023] Furthermore, the reverse osmosis membrane cleaning device also includes a reagent container for storing cleaning reagents and a liquid conveying device;

[0024] The pipeline assembly includes a first pipeline connected between the medicine container and the liquid inlet end of the liquid delivery device and a second pipeline connected between the liquid outlet end of the liquid delivery device and the medicine container;

[0025] The second pipeline includes a branch pipeline connected to the reverse osmosis membrane elements. The reverse osmosis membrane elements connected to the second pipeline are arranged in parallel, and each reverse osmosis membrane element is correspondingly provided with a branch pipeline, and each branch pipeline is provided with at least one valve.

[0026] Furthermore, the cavity of the first connection cover is connected to the second pipeline, and the second pipeline includes a third pipeline connected to the cavity of the second connection cover, and the third pipeline is used to discharge the liquid coming out of the reverse osmosis membrane element into the medicine container.

[0027] Furthermore, at least two groups of connection mechanisms are correspondingly arranged on both sides of the medicine container, and at least two groups of connection mechanisms are arranged along the extension direction of the sides corresponding to the medicine container;

[0028] The pressing mechanism simultaneously drives the first connection cover and the second connection cover of at least two groups of connection mechanisms to press the two ends of the reverse osmosis membrane element.

[0029] Compared with the prior art, the utility model has the following beneficial effects: the reverse osmosis membrane cleaning equipment comprises a pipeline assembly and a clamping mechanism, the pipeline assembly comprises one or more than two groups of connecting mechanisms for accessing the reverse osmosis membrane element to be cleaned, the connecting mechanism comprises a first connecting cover sleeved on the first end of the reverse osmosis membrane element and a second connecting cover sleeved on the second end of the reverse osmosis membrane element, the first connecting cover and / or the second connecting cover are slidably matched with the reverse osmosis membrane element and can slide along the axial direction of the reverse osmosis membrane element; the clamping mechanism is used to drive the first connecting cover and the second connecting cover to clamp the two ends of the reverse osmosis membrane element, so as to realize automatic fixing of the reverse osmosis membrane element, thereby facilitating access to the reverse osmosis membrane element and improving access efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The utility model is a schematic diagram of the hydraulic principle of a reverse osmosis membrane cleaning device in one embodiment.

[0031] Figure 2 It is a structural schematic diagram of a reverse osmosis membrane cleaning device in one embodiment of the utility model.

[0032] Figure 3 yes Figure 2 The front view of the reverse osmosis membrane cleaning equipment is shown.

[0033] Figure 4 The utility model is a schematic structural diagram of a reverse osmosis membrane cleaning device in one embodiment, and a control box is shown in the figure.

[0034] Figure 5 It is a schematic diagram of a reverse osmosis membrane element according to an embodiment of the present invention.

[0035] Figure 6 yes Figure 5 A cross-sectional view of a reverse osmosis membrane element is shown.

[0036] Figure 7 It is a schematic diagram of the positions of the second pipeline, the filter, the medicine container and other components in one embodiment of the utility model.

[0037] Figure 8 It is a module block diagram of the electrical components of the reverse osmosis membrane cleaning device in one embodiment of the utility model.

[0038] Fig. 9 It is a schematic diagram of a first connecting cover in an embodiment of the utility model.

[0039] Fig.10 yes Figure 4 The cross-sectional view of the connection relationship between the connection mechanism of the reverse osmosis membrane cleaning equipment and the reverse osmosis membrane element is shown.

[0040] Fig.11 yes Fig.10 A partial enlarged view of point Ⅰ in the middle. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0042] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0043] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0044] like Figures 1 to 4 As shown, a reverse osmosis membrane cleaning device corresponding to a preferred embodiment of the utility model includes a pipeline component 4 and a pressing mechanism 6.

[0045] The pipeline assembly 4 includes one or more than two groups of connection mechanisms 43 for connecting the reverse osmosis membrane elements 20 to be cleaned. In the illustrated embodiment, there are six groups of connection mechanisms 43, and up to six reverse osmosis membrane elements 20 can be connected at the same time for cleaning, which is more efficient. Figure 5 and Figure 6 As shown, in some embodiments, the reverse osmosis membrane element 20 includes a housing 20a, a central tube 20b disposed in the housing 20a, and a reverse osmosis membrane 20c located between the central tube 20b and the housing 20a. The first end 200 of the reverse osmosis membrane element 20 is used for the entry of a cleaning agent, and the second end 201 of the reverse osmosis membrane element 20 is used for the discharge of liquid inside the reverse osmosis membrane element 20. The cleaning agent transported by the second pipeline 41 enters from the first end 200, flows through the reverse osmosis membrane 20c for cleaning, and the cleaned liquid is discharged from the second end 201.

[0046] The connecting mechanism 43 includes a first connecting cover 431 sleeved on the first end 200 of the reverse osmosis membrane element 20 and a second connecting cover 432 sleeved on the second end 201 of the reverse osmosis membrane element 20. The first connecting cover 431 and / or the second connecting cover 432 are slidably matched with the reverse osmosis membrane element 20 and can slide along the axial direction of the reverse osmosis membrane element 20. When cleaning the reverse osmosis membrane element 20, the connecting mechanism 43 can seal the reverse osmosis membrane element 20 to prevent overflow of the cleaning agent.

[0047] The pressing mechanism 6 is used to drive the first connection cover 431 and the second connection cover 432 to press the two ends of the reverse osmosis membrane element 20 , so that the reverse osmosis membrane element 20 is fixed and the reverse osmosis membrane element 20 is connected to the pipeline assembly 4 .

[0048] By providing a first connection cover 431 and a second connection cover 432 respectively connected to both ends of the reverse osmosis membrane element 200, and driving the first connection cover 431 and the second connection cover 432 to press both ends of the reverse osmosis membrane element 20 through the pressing mechanism 6, the reverse osmosis membrane element 20 can be quickly connected to improve the connection efficiency.

[0049] In some embodiments, the first connection cover 431 is fixed, and the second connection cover 432 moves relative to the first connection cover 431 under the drive of the clamping mechanism, and the reverse osmosis membrane element 20 is pressed against the first connection cover 431 through the second connection cover 432. In other embodiments, the second connection cover 432 is fixed, and the first connection cover 431 moves relative to the second connection cover 432 under the drive of the clamping mechanism, and the reverse osmosis membrane element 20 is pressed against the second connection cover 432 through the first connection cover 431. In still other embodiments, the first connection cover 431 and the second connection cover 432 can both move in the same direction or in opposite directions under the drive of the clamping mechanism to loosen or clamp the reverse osmosis membrane element 20.

[0050] like Figures 2 to 4 As shown, in some embodiments, the clamping mechanism 6 includes a fixed frame 60, a movable frame 61 connected to the second connecting cover 432, and a linear drive device 62 for driving the movable frame 61 to perform linear motion relative to the fixed frame 60. The first connecting cover 431 is relatively fixed to the fixed frame 60. Under the drive of the linear drive device 62, the movable frame 61 moves along the axial direction of the reverse osmosis membrane element 20, so that the second connecting cover 432 is sleeved on the reverse osmosis membrane element 20, and cooperates with the first connecting cover 431 to clamp the reverse osmosis membrane element 20, thereby sealing the reverse osmosis membrane element 20 to prevent leakage of the cleaning agent.

[0051] Optionally, the movable frame 61 is connected to the second connection covers 432 of more than two groups of connection mechanisms 43 at the same time, and the pressing mechanism 6 can simultaneously drive the first connection covers 431 and the second connection covers 432 of at least two groups of connection mechanisms 43 to press the two ends of the reverse osmosis membrane element 20. In the illustrated embodiment, the movable frame 61 is connected to the second connection covers 432 of all the connection mechanisms 43 at the same time. The user only needs to place the reverse osmosis membrane element 20 on the first connection cover 21, and then start the switch, and all the second connection covers 432 automatically move toward the first connection cover 21, so that all the reverse osmosis membrane elements 20 are clamped between the first connection cover 21 and the second connection cover 432, and multiple reverse osmosis membrane elements 20 can be connected at the same time, and the access efficiency is higher. It can be understood that when the second connection cover 432 rises to be separated from the reverse osmosis membrane element 20, the reverse osmosis membrane element 20 can be taken out.

[0052] The linear drive device 62 may be, for example, a pneumatic cylinder, an electric cylinder, a hydraulic cylinder, or the like, or may be a device that realizes a linear drive function by cooperating with a motor and a transmission structure (such as a belt drive, a chain drive, a connecting rod drive, etc.). Figure 3 In the figure, the linear drive device 62 is a hydraulic cylinder, whose body 620 is fixedly connected to the fixed frame 60, and the drive shaft 621 is connected to the movable frame 61, and drives the movable frame 61 and the second connection cover 432 to move through telescopic movement. When the reverse osmosis membrane element 20 is vertically arranged, the linear drive device 62 drives the second connection cover 432 to move up and down, that is, to move in the vertical direction.

[0053] The reverse osmosis membrane cleaning device includes a control box 71, and a controller 710 (such as a PLC or a single chip microcomputer, etc.) is arranged in the control box 71. In some embodiments, the linear drive device 62 is electrically connected to the controller 710 of the reverse osmosis membrane cleaning device, and the controller 710 adjusts the driving force of the linear drive device 62 according to the liquid pressure of the cleaning agent input into the reverse osmosis membrane element 20, so that the clamping mechanism 6 and the reverse osmosis membrane element 20 always maintain good sealing, and avoid the cleaning agent overflowing when the liquid pressure of the cleaning agent is too high. Specifically, when the pressure in the second pipeline 41 increases, it indicates that the liquid pressure on the reverse osmosis membrane element 20 increases. At this time, the controller 710 controls the linear drive device 62 to increase the driving force of the second connection cover 432 to achieve a reliable sealing connection and prevent leakage. On the contrary, when the pressure in the pipeline decreases, the driving force of the second connection cover 432 can be reduced to prevent damage due to excessive clamping force.

[0054] The liquid pressure input into the reverse osmosis membrane element 20 can be detected by setting a pressure sensor 72, such as Figure 7 and Figure 8As shown, in some embodiments, the reverse osmosis membrane cleaning device includes a pressure sensor 72 capable of detecting liquid pressure, and the pressure sensor 72 is used to determine the liquid pressure to which the reverse osmosis membrane element 20 is subjected. The pressure sensor 72 can be disposed, for example, in the second pipeline 41, preferably close to the first end 200 of the reverse osmosis membrane element 20. When the pressure sensor 72 detects that the pressure in the pipeline increases, the controller 710 in the control box 71 controls the linear drive device 62 to increase the driving force for pressing the second connection cover 432 to achieve a reliable sealing connection and prevent liquid leakage. Conversely, when the pressure in the pipeline decreases, the driving force for pressing the second connection cover 432 can be reduced.

[0055] like Figure 2 and Figure 3 As shown, the reverse osmosis membrane cleaning device also includes a reagent container 1 for storing cleaning reagents and a liquid conveying device 3; the liquid conveying device 3 is used to generate power to drive the liquid to move, and it can suck the liquid in the reagent container 1 into the reverse osmosis membrane element 20 for cleaning. The liquid conveying device 3 can be, for example, a water pump. The liquid conveying device 3 has a liquid inlet end 30 and a liquid outlet end 31, and the liquid is sucked from the liquid inlet end 30 and discharged from the liquid outlet end 31.

[0056] The pipeline assembly 4 includes a first pipeline 40 connected between the medicine container 1 and the liquid inlet end 30 of the liquid conveying device 3, and a second pipeline 41 connected between the liquid outlet end 31 of the liquid conveying device 3 and the medicine container 1; the first pipeline 40 and the second pipeline 41 each include at least one pipe for liquid circulation. The reverse osmosis membrane element 20 to be cleaned is arranged on the second pipeline 41, and the liquid in the second pipeline 41 can flow through the reverse osmosis membrane element 20. The two ends of the reverse osmosis membrane element 20 in the length direction are respectively a first end 200 and a second end 201, the first end 200 is used for the cleaning agent to enter, and the second end 201 is used for the internal liquid to be discharged.

[0057] In some embodiments, reference Figures 1 to 3 The reverse osmosis membrane cleaning device further includes a filter 5. The filter 5 and the reverse osmosis membrane element 20 are both arranged on the second pipeline 41, and the two are connected in series. The liquid transported by the liquid transport device 3 enters the reverse osmosis membrane element 20 after passing through the filter 5. The filter 5 can filter particles and impurities in the liquid, thereby preventing the particles from entering the reverse osmosis membrane element 20 again, which is beneficial to improving the cleaning effect and efficiency and preventing clogging and damage to the reverse osmosis membrane 20c.

[0058] In some embodiments, Figures 1 to 3As shown, the second pipeline 41 includes a first pipeline 410 connected between the liquid outlet 31 and the filter 5, and a second pipeline 411 connected between the filter 5 and the first end 200 of the reverse osmosis membrane element 20. Optionally, the second pipeline 41 is connected between the liquid outlet 31 and the reagent container 1 to achieve the recycling of the cleaning reagent. Figure 2 and Figure 4 As shown, the second pipeline 41 also includes a third pipeline 412 connecting the reagent container 1 and the second end 201 of the reverse osmosis membrane element 20. The liquid in the reverse osmosis membrane element 20 after cleaning is discharged from the second end 201 and enters the third pipeline 412, and returns to the reagent container 1. In this way, the cleaning agent is continuously circulated in the pipeline system, and the cleaning agent can be fully utilized. Since the second pipeline 41 is provided with a filter 5, even if the liquid in the reagent container 1 contains impurities such as particulate matter after cleaning for a period of time, it can be reliably filtered by the filter 5 to ensure the cleaning effect.

[0059] When the number of reverse osmosis membrane elements 20 connected to the second pipeline 41 is more than two groups, the reverse osmosis membrane elements 20 are arranged in parallel, and the first end 200 of each reverse osmosis membrane element 20 is connected to the second pipeline 411, rather than being connected end to end, so that the cleaning agent can directly enter each reverse osmosis membrane element 20 for cleaning, and the cleaning effect and efficiency are higher. The second pipeline 41 includes a branch pipeline 4110 connected to the reverse osmosis membrane element 20, and each reverse osmosis membrane element 20 is correspondingly provided with a branch pipeline 4110, and each branch pipeline 4110 is provided with at least one valve 4111. Figure 7 In the embodiment, the second pipeline 41 can fix six reverse osmosis membrane elements 20 , and a branch pipeline 4110 is correspondingly arranged at the bottom of each reverse osmosis membrane element 20 , and a third pipeline 412 is correspondingly arranged at the top.

[0060] The valve 4111 can control the flow rate into the corresponding reverse osmosis membrane element 20, and then adjust the liquid pressure of the corresponding reverse osmosis membrane element 20. Since the pollution conditions of the reverse osmosis membrane elements 20 are different, by adjusting the valve 4111, each reverse osmosis membrane element 20 can be cleaned under different pressures, and the cleaning is more targeted. In addition, when there is no reverse osmosis membrane element 20 at a position where a reverse osmosis membrane element 20 is connected, the valve 4111 can be closed to ensure that the reverse osmosis membrane cleaning equipment can still work normally. For example, when there are only five reverse osmosis membrane elements 20 that need to be cleaned, one valve 4111 among the six valves can be closed to achieve the cleaning of the five reverse osmosis membrane elements 20.

[0061] Optionally, during cleaning, the reverse osmosis membrane element 20 is arranged vertically (i.e., along the Figure 2The first connection cover 431 is located at the bottom of the reverse osmosis membrane element 20, and the second connection cover 432 is located at the top of the reverse osmosis membrane element 20. That is, the first end 200 is at the bottom, and the second end 201 is at the top. The cleaning agent is passed upward from the bottom and then discharged into the reagent container 1 from the top. In this way, the reverse osmosis membrane element 20 can be cleaned more fully and the cleaning effect is better. It can be understood that some reverse osmosis membrane elements 20 are placed horizontally when performing filtering work. Under the action of gravity, pollutants are usually deposited on the lower side of the radial direction. If the reverse osmosis membrane element 20 is still placed horizontally when cleaning the reverse osmosis membrane element 20, the cleaning agent is more inclined to pass through the place where the blockage is better, resulting in poor cleaning effect on the part with serious blockage. In addition, the cleaning agent may not be able to completely immerse the reverse osmosis membrane 20c under the action of gravity, so that the cleaning effect of the part close to the upper end of the reverse osmosis membrane 20c is not ideal. By arranging the reverse osmosis membrane element 20 vertically, it is advantageous to more fully and comprehensively clean each part of the reverse osmosis membrane element 20 .

[0062] like Fig. 9 As shown, in some embodiments, the first connection cover 431 and the second connection cover 432 both have an insertion port 43110 for loading the reverse osmosis membrane element 20, so as to facilitate loading the reverse osmosis membrane element 20. When the reverse osmosis membrane element 20 is arranged vertically, the insertion port 43110 of the first connection cover 431 is arranged upward, and the insertion port 43110 of the second connection cover 432 is arranged downward. When installing the reverse osmosis membrane element 20, the reverse osmosis membrane element 20 can be directly placed on the first connection cover 431, positioned by the first connection cover 431, and then the second connection cover 43 is pressed down to fix the reverse osmosis membrane element 20.

[0063] In some embodiments, Fig.10 and Fig.11 As shown, the first connection cover 431 and the second connection cover 432 each include a cavity 4310 and an outer ring portion 4311 for enclosing the outer periphery of the reverse osmosis membrane element 20, the outer ring portion 4311 can realize the horizontal positioning of the reverse osmosis membrane element 20, and is sealed and connected with the outer wall of the reverse osmosis membrane element 20 to prevent water leakage. The space enclosed by the outer ring portion 4311 forms an insertion port 43110 for inserting the reverse osmosis membrane element 20.

[0064] In some embodiments, Fig.10 and Fig.11 As shown, a sealing ring 4312 is provided on the inner wall of the outer ring portion 4311 , and sealing is achieved by matching the sealing ring 4312 with the reverse osmosis membrane element 20 .

[0065] The cavity 4310 of the first connection cover 431 is connected to the second pipeline 41, specifically, to the branch pipeline 4110. The liquid in the branch pipeline 4110 enters the cavity 4310 and then enters the reverse osmosis membrane element 20. The liquid after washing the reverse osmosis membrane element 20 enters the cavity 4310 of the second connection cover 432. The cavity 4310 of the second connection cover 432 is connected to the third pipeline 412, and the third pipeline 412 discharges the liquid discharged from the reverse osmosis membrane element 20 into the medicine container 1.

[0066] Optional, reference Fig.10 and Fig.11 The sealing ring 4312 is provided with a convex ring 4314 located outside the outer ring portion 4311, and the convex ring 4314 is arranged opposite to the end face 4315 of the outer ring portion 4311. When the reverse osmosis membrane element 20 is connected to the connection cover, the convex ring 4314 will deform outward when it contacts the reverse osmosis membrane 20, so that the reverse osmosis membrane element 20 can be reliably connected to the connection cover and sealed, and the convex ring 4314 can improve the sealing effect. Optionally, the convex ring 4314 fits the end face 4315 of the outer ring portion 4311.

[0067] like Fig.10 and Fig.11 As shown, the first connection cover 431 and the second connection cover 432 both include a support plate 4313 , the support plate 4313 is connected to the outer ring portion 4311 , and the cavity 4310 and the outer ring portion 4311 are respectively located on both sides of the support plate 4313 .

[0068] The support plate 4313 is used to abut against the end of the reverse osmosis membrane element 20 to limit the reverse osmosis membrane element 20. Specifically, the support plate 4313 of the first connection cover 431 abuts against the first end 200 of the reverse osmosis membrane element 20 to support the reverse osmosis membrane element 20. When the reverse osmosis membrane element 20 is vertically arranged, the reverse osmosis membrane element 20 can be placed in the first connection cover 431 to achieve positioning, and then the second connection cover 432 can be installed. The support plate 4313 of the second connection cover 432 abuts against the second end 201 of the reverse osmosis membrane element 20 to clamp the reverse osmosis membrane element 20.

[0069] It is understandable that a sealing gasket may be provided between the end of the reverse osmosis membrane element 20 and the support plate 4313 to improve the sealing effect.

[0070] The cavity 4310 is at least partially connected to the area between the shell 20 a and the central tube 20 b of the reverse osmosis membrane element 20 , so as to facilitate the cleaning agent to enter and exit the reverse osmosis membrane element 20 .

[0071] The cleaning agent enters the cavity 4310 of the first connection cover 431 through the second pipe 411, flows into the first end 200 through the cavity 4310, and flows out from the second end 201 into the cavity 4310 of the second connection cover 432 after flushing the reverse osmosis membrane 20c, and finally is discharged from the cavity 4310. Optionally, the cavity 4310 is arranged relative to the area between the shell 20a and the central tube 20b, so that the area between the shell 20a and the central tube 20b is exposed in the cavity 4310, thereby facilitating the cleaning agent to flow into and out of the reverse osmosis membrane element 20, and cleaning the reverse osmosis membrane element 20 located between the shell 20a and the central tube 20b.

[0072] The cavity 4310 of the first connecting cover 431 is connected to the second pipeline 41. In some embodiments, the second pipeline 41 also includes a third pipeline 412 connected to the cavity 4310 of the second connecting cover 432. The third pipeline 412 is used to discharge the liquid from the reverse osmosis membrane element 20 into the medicine container 1.

[0073] In some embodiments, the first end 200 of the reverse osmosis membrane element 20 is the water outlet end when the reverse osmosis membrane element 20 performs filtering work, and the second end 201 of the reverse osmosis membrane element 20 is the water inlet end when the reverse osmosis membrane element 20 performs filtering work; when performing filtering work, the reverse osmosis membrane element 20 is usually connected in series in a pipeline system to work. Since the concentrated water produced by the reverse osmosis membrane element 20 flows backward, the pollution situation is usually more serious as it flows backward. This makes the pollution degree of the water outlet end of the reverse osmosis membrane element 20 during filtering work usually more serious than that of its water inlet end. By setting the water outlet end of the reverse osmosis membrane element 20 during filtering work to the first end 200 of the reverse osmosis membrane element 20 (i.e., the water inlet end during cleaning), the cleaning agent can first contact with the more seriously polluted part of the reverse osmosis membrane element 20, give full play to the cleaning effect of the cleaning agent, and perform the cleaning work more efficiently.

[0074] Furthermore, when the reverse osmosis membrane element 20 is cleaned, the end of the central tube 20b at the first end 200 is blocked. In this way, the cleaning agent can pass more through the gaps of the reverse osmosis membrane diaphragms to form parallel shear water flows, effectively improving the cleaning effect. Exemplarily, the reverse osmosis membrane cleaning device includes a plug 203 that blocks the central tube 20b, and the plug 203 blocks the end of the central tube 20b at the first end 200. Optionally, the plug 203 is at least partially inserted into the central tube 20b.

[0075] In some embodiments, Figure 4As shown, at least two groups of connection mechanisms 43 are correspondingly arranged on both sides of the medicine container 1, and at least two groups of connection mechanisms 43 are arranged along the extension direction of the side corresponding to the medicine container 1. The plurality of connection mechanisms 43 are divided into two groups and arranged on both sides of the medicine container 1, so that the space can be reasonably utilized, and the number of reverse osmosis membrane elements 20 that can be cleaned at the same time is increased, thereby improving the working efficiency of the reverse osmosis membrane cleaning equipment. Figure 4 In the illustrated embodiment, the medicine container 1 is rectangular, and at least two groups of connecting mechanisms 43 are provided at both ends of the width direction Y. In the illustrated embodiment, the number of connecting mechanisms 43 is specifically six groups, which are symmetrically arranged on both sides of the medicine container 1, and can simultaneously fix six reverse osmosis membrane elements 20 for cleaning.

[0076] like Figure 7 As shown, the second pipeline 411 includes a main pipeline 4112 and two branch pipelines 4113 connected to the main pipeline 4112. The two branch pipelines 4113 extend to the bottom of the connection mechanism 43 on both sides of the reagent container 1, respectively, so as to transport the cleaning agent to the reverse osmosis membrane elements 20 on both sides. The branch pipeline 4110 is connected to the branch pipeline 4113.

[0077] The above are only specific implementations of the present invention, and any improvements made based on the concept of the present invention are considered to be within the protection scope of the present invention.

Claims

1. A reverse osmosis membrane cleaning device, characterized in that: include: A pipeline assembly (4), comprising one or more than two connection mechanisms (43) for connecting to a reverse osmosis membrane element (20) to be cleaned, the connection mechanism (43) comprising a first connection cover (431) for sleeved on a first end (200) of the reverse osmosis membrane element (20) and a second connection cover (432) for sleeved on a second end (201) of the reverse osmosis membrane element (20), the first connection cover (431) and / or the second connection cover (432) being slidably matched with the reverse osmosis membrane element (20) and being able to slide along the axial direction of the reverse osmosis membrane element (20); and The pressing mechanism (6) is used to drive the first connecting cover (431) and the second connecting cover (432) to press the two ends of the reverse osmosis membrane element (20).

2. The reverse osmosis membrane cleaning device according to claim 1, characterized in that: During cleaning, the reverse osmosis membrane element (20) is arranged vertically, the first connection cover (431) is located at the bottom of the reverse osmosis membrane element (20), and the second connection cover (432) is located at the top of the reverse osmosis membrane element (20). The first connection cover (431) and the second connection cover (432) both have an insertion port (43110) for inserting the reverse osmosis membrane element (20), the insertion port (43110) of the first connection cover (431) is arranged upward, and the insertion port (43110) of the second connection cover (432) is arranged downward.

3. The reverse osmosis membrane cleaning device according to claim 1, characterized in that: The clamping mechanism (6) comprises a fixed frame (60), a movable frame (61) connected to the second connecting cover (432), and a linear drive device (62) for driving the movable frame (61) to perform linear motion relative to the fixed frame (60); the first connecting cover (431) is relatively fixed to the fixed frame (60); under the drive of the linear drive device (62), the movable frame (61) moves along the axial direction of the reverse osmosis membrane element (20) so that the second connecting cover (432) is sleeved on the reverse osmosis membrane element (20).

4. The reverse osmosis membrane cleaning device according to claim 3, characterized in that: The linear drive device (62) is electrically connected to a controller (710) of the reverse osmosis membrane cleaning device, and the controller (710) adjusts the driving force of the linear drive device (62) according to the liquid pressure of the cleaning agent input into the reverse osmosis membrane element (20).

5. The reverse osmosis membrane cleaning device according to claim 3, characterized in that: The pipeline assembly (4) comprises two or more connection mechanisms (43) for connecting to the reverse osmosis membrane elements (20) to be cleaned, and the reverse osmosis membrane elements (20) connected to the pipeline assembly (4) are arranged in parallel; The movable frame (61) is simultaneously connected to the second connection covers (432) of at least two sets of connection mechanisms (43).

6. The reverse osmosis membrane cleaning device according to claim 1, characterized in that: The first connection cover (431) and the second connection cover (432) each comprise a cavity (4310) and an outer ring portion (4311) for enclosing the outer circumference of the reverse osmosis membrane element (20); The outer ring portion (4311) is sealedly connected to the outer wall of the reverse osmosis membrane element (20), and the space enclosed by the outer ring portion (4311) forms an insertion port (43110) for inserting the reverse osmosis membrane element (20).

7. The reverse osmosis membrane cleaning device according to claim 6, characterized in that: The cavity (4310) is at least partially connected to the area between the outer shell (20a) and the central tube (20b) of the reverse osmosis membrane element (20), and the reverse osmosis membrane (20c) of the reverse osmosis membrane element (20) is located between the outer shell (20a) and the central tube (20b).

8. The reverse osmosis membrane cleaning device according to claim 6, characterized in that: The inner wall of the outer ring portion (4311) is provided with a sealing ring (4312), and the sealing ring (4312) is provided with a convex ring (4314) located outside the outer ring portion (4311), and the convex ring (4314) is arranged opposite to the end face (4315) of the outer ring portion (4311).

9. The reverse osmosis membrane cleaning device according to claim 6, characterized in that: The first connection cover (431) and the second connection cover (432) both include a support plate (4313) connected to the outer ring portion (4311), the cavity (4310) and the outer ring portion (4311) are respectively located on both sides of the support plate (4313), and the support plate (4313) is used to abut against the end of the reverse osmosis membrane element (20) to limit the reverse osmosis membrane element (20).

10. The reverse osmosis membrane cleaning device according to any one of claims 1 to 9, characterized in that: The first end (200) of the reverse osmosis membrane element (20) is used for allowing a cleaning agent to enter, and the second end (201) of the reverse osmosis membrane element (20) is used for allowing liquid inside the reverse osmosis membrane element (20) to be discharged; The first end (200) of the reverse osmosis membrane element (20) is the water outlet end when the reverse osmosis membrane element (20) performs filtering work, and the second end (201) of the reverse osmosis membrane element (20) is the water inlet end when the reverse osmosis membrane element (20) performs filtering work; When the reverse osmosis membrane element (20) is cleaned, the end of the central tube (20b) of the reverse osmosis membrane element (20) located at the first end (200) is blocked.

11. The reverse osmosis membrane cleaning device according to any one of claims 1 to 9, characterized in that: The reverse osmosis membrane cleaning device also includes a reagent container (1) for storing a cleaning reagent and a liquid conveying device (3); The pipeline assembly (4) comprises a first pipeline (40) connected between the medicine container (1) and the liquid inlet end (30) of the liquid delivery device (3), and a second pipeline (41) connected between the liquid outlet end (31) of the liquid delivery device (3) and the medicine container (1); The second pipeline (41) comprises a branch pipeline (4110) connected to the reverse osmosis membrane element (20), the reverse osmosis membrane elements (20) connected to the second pipeline (41) are arranged in parallel, and each of the reverse osmosis membrane elements (20) is correspondingly provided with a branch pipeline (4110), and each of the branch pipelines (4110) is provided with at least one valve (4111).

12. The reverse osmosis membrane cleaning device according to claim 11, characterized in that: The cavity (4310) of the first connecting cover (431) is connected to the second pipeline (41), and the second pipeline (41) includes a third pipeline (412) connected to the cavity (4310) of the second connecting cover (432), and the third pipeline (412) is used to discharge the liquid coming out of the reverse osmosis membrane element (20) into the medicine container (1).

13. The reverse osmosis membrane cleaning device according to claim 11, characterized in that: At least two groups of connection mechanisms (43) are correspondingly arranged on both sides of the medicine container (1), and the at least two groups of connection mechanisms (43) are arranged along the extension direction of the sides corresponding to the medicine container (1); The pressing mechanism (6) simultaneously drives the first connecting cover (431) and the second connecting cover (432) of at least two groups of connecting mechanisms (43) to press the two ends of the reverse osmosis membrane element (20).

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