Tubular nanofiltration membrane device

Abstract

The utility model relates to a tubular nanofiltration membrane device and belongs to the field of nanofiltration membranes. The device comprises installation pipes and a nanofiltration assembly, the nanofiltration assembly is installed in the installation pipes, the device further comprises two three-way valves, each three-way valve comprises a valve body, each valve body comprises a first channel, a second channel and a third channel, and the two first channels are communicated with the two ends of the two installation pipes respectively; and two movable joints. According to the utility model, the prepared cleaning fluid is introduced from the movable joint where the cleaning fluid can enter, passes through the first movable joint, the mounting pipe and the nanofiltration assembly in the mounting pipe, and then is discharged through the second movable joint which can discharge the fluid, so that the cleaning fluid circularly passes through the nanofiltration assembly; the cleaning of the nanofiltration assembly in an isolated state from other communication positions is realized, and the use amount of the cleaning liquid in a single circulation process is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to tubular nanofiltration membrane device, especially a tubular nanofiltration membrane device BACKGROUND

[0002] Dyeing and finishing wastewater is high in COD and salt, and salt is often used to mix with dyes, so as to achieve fixing effect, and the aniline molecular weight in the dyes is close to the salt, so it is difficult to separate by using traditional nanofiltration membrane, so it is necessary to use the membrane with relatively low molecular weight and narrow range. At the same time, due to the high COD, it is a test for the traditional roll type membrane, so the tubular nanofiltration is used for sterilization and disinfection of oxidizing agent.

[0003] In the filtering process, the tubular nanofiltration membrane is attached by the filtered material and needs to be sterilized and cleaned, and in the cleaning process, the tubular nanofiltration assembly is often cleaned by circulation, but in the process of circulating cleaning, it is inconvenient to isolate the two ends of the tubular nanofiltration assembly from other communication positions and then separately circulate cleaning, and more cleaning liquid is needed for single circulation. UTILITY MODEL CONTENT

[0004] Therefore, it is necessary to provide a tubular nanofiltration membrane device in view of the problem that it is inconvenient to isolate the two ends of the tubular nanofiltration assembly from other communication positions and then separately circulate cleaning in the process of circulating cleaning, and more cleaning liquid is needed for single circulation.

[0005] The utility model provides a tubular nanofiltration membrane device, including installation pipe and nanofiltration assembly, nanofiltration assembly installs inside installation pipe, still include:

[0006] Two three -way valves, two three -way valves all include valve body, two valve body all include first passageway, second passageway and third passageway, two first passageway respectively with two installation pipe both ends communication;

[0007] Two movable joints, two movable joints include first joint and second joint and set up in first joint and second joint one -way valve door between;

[0008] Wherein, the inner wall of two third passageways is provided with first screw threads, the surfaces of the first joint and the second joint are provided with second screw threads matched with the first screw threads, in cleaning, the first passageway of the three -way valve is communicated with the third passageway, and the first joint and the second joint of one of the two movable joints are changed in position and screwed with the third passageway, forming a communication state of discharging liquid.

[0009] It should be understood that, in the actual cleaning process, the third channel is communicated with the first channel by adjusting the three-way valve, the communication between the second channel and the first channel is cancelled, and then the two ends of the installation pipe are isolated from other communication positions. Then, the first joint and the second joint of one of the two movable joints are changed in position and are in threaded communication with the third channel, so that the flow directions of the one-way valves in the two movable joints are in a communication state, and then a one-way communication channel is formed between the two movable joints and the installation pipe, and the isolation from other communication positions is maintained.

[0010] Then, by communicating the discharge end of the pumping device with the movable joint in the injectable liquid state and communicating the suction end of the pumping device with the movable joint in the dischargeable state, the prepared cleaning liquid is introduced into the cleaning liquid from the movable joint, and the cleaning liquid is discharged through the second movable joint in the dischargeable liquid state after passing through the first movable joint, the installation pipe and the nanofiltration assembly in the installation pipe, thereby realizing the circulation of the cleaning liquid through the nanofiltration assembly and cleaning the nanofiltration assembly in the isolated state from other communication positions, which is beneficial to reducing the amount of cleaning liquid used in a single cycle.

[0011] In one embodiment, a valve core is further included, which is rotationally arranged in the installation cavity inside the valve body and includes a first port, a second port and a third port. The two ends of the first port are in communication with the first channel and the second channel, respectively. One end of the second port is in communication with the first port, and the other end is in communication with the third channel. The third port is in communication with the first port. A motor is fixedly installed on the top surface of the valve body. An adjustment shaft is fixedly connected to the output shaft of the motor at one end, and extends into the installation cavity of the valve body at the other end. The bottom end of the adjustment shaft is fixedly connected to the valve core. It should be understood that, in the filtering state, the adjustment shaft is rotated by the motor, thereby rotating the valve core. The two ends of the first port of the valve core are in communication with the first channel and the second channel, respectively. At this time, the third channel is limited to communicate with the first port by the one-way valve, so that the liquid to be filtered can only pass through the first channel, the second channel and the first port, thereby realizing the communication between the liquid to be filtered outside and the installation pipe, and realizing the filterable state.

[0012] In the cleaning state, the adjustment shaft is rotated by the motor, thereby rotating the valve core. The third port of the valve core is in communication with the first port, and the valve core of the three-way valve is isolated from the second channel, thereby being isolated from the external device and being in a separate space for subsequent cleaning.

[0013] The pipe type nanofiltration membrane device realizes circulation of the cleaning liquid through the nanofiltration assembly, realizes cleaning of the nanofiltration assembly in the isolated state from other communication positions, and is favorable for reducing the amount of the cleaning liquid in a single circulation process. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0016] Figure 2 It is a cross-sectional view of the overall structure of the present application;

[0017] Figure 3 It is Figure 2 It is an enlarged view of part A in the middle;

[0018] Figure 4 It is a cross-sectional view of the structure of the movable joint of the present application;

[0019] Figure 5 It is a schematic diagram of the structure of the movable joint of the present application;

[0020] Figure 6 It is a schematic diagram of the structure of the mounting rack and the nanofiltration assembly of the present application;

[0021] Figure 7 It is a schematic diagram of the structure of the three-way valve of the present application;

[0022] Figure 8 It is a schematic diagram of the structure of the valve core of the present application.

[0023] Reference signs:

[0024] Mounting pipe 1, valve body 3, first channel 301, second channel 302, third channel 303, movable joint 4, first joint 401, second joint 402, one-way valve 403, communication port 40301, sealing plate 40302, elastic support 40303, first thread 5, second thread 6, valve core 7, first through port 701, second through port 702, third through port 703, motor 8, adjusting shaft 9, mounting rack 10, mounting through port 11, membrane pipe 12. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in the description of the present application are for the purpose of illustration only and do not indicate the only embodiments.

[0027] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0028] In the present application, unless otherwise specifically defined and limited, the "on", "under", "above" and "below" of the first feature to the second feature can be that the first feature directly contacts the second feature, or the first feature indirectly contacts the second feature through an intermediate medium. Moreover, the "on", "above" and "below" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "below" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0029] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0030] The following will be described in conjunction withFigures 1-8 The utility model discloses a tubular nanofiltration membrane device.

[0031] As Figures 1-7 Shown in one embodiment, a tubular nanofiltration membrane device, comprising installation pipe 1 and nanofiltration assembly, nanofiltration assembly is installed inside installation pipe 1, still include:

[0032] Two three -way valves, two three -way valves all include valve body 3, two valve body 3 all include first passageway 301, second passageway 302 and third passageway 303, two first passageway 301 respectively with two installation pipe 1 both ends communication;

[0033] Two movable joints 4, two movable joints 4 include first joint 401 and second joint 402 and set up in first joint 401 and second joint 402 one -way valve 403 between;

[0034] Wherein, the inner wall of two third passageways 303 is provided with first screw thread 5, the surface of first joint 401 and second joint 402 is all provided with second screw thread 6 mutually adapted with first screw thread 5, when cleaning, adjust the first passageway 301 of three -way valve and third passageway 303 communication, and the first joint 401 and second joint 402 of one of two movable joints 4 of movable joint 4 are changed position and third passageway 303 screw communication, form the communication state of discharging liquid.

[0035] It should be understood that, in actual cleaning process, first passageway 301 is communicated with third passageway 303 through the adjustment of three -way valve, cancel the communication of second passageway 302 and first passageway 301, and then, the first joint 401 and second joint 402 of one of two movable joints 4 are changed position and third passageway 303 screw communication, so that the flow -through direction of one -way valve 403 in two movable joints 4 is in communication state, and then, realize that one -way communication channel is formed between two movable joints 4 and installation pipe 1, and keep isolated with other communication positions;

[0036] Then, by the discharging end of pumping device and the movable joint 4 in the injectable liquid communication, the pumping end of pumping device and the movable joint 4 in the discharging state communication, the prepared cleaning fluid is communicated from the movable joint 4 in the entering state, and then, the cleaning fluid is discharged through the second movable joint 4 in the discharging state, and then, the cleaning fluid is circulated through the nanofiltration assembly, and the cleaning of the nanofiltration assembly in the isolated state with other communication positions is realized, which is beneficial to reduce the amount of cleaning fluid in a single cycle.

[0037] As Figure 1, Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, in one embodiment, the valve core 7 is rotatably disposed in the mounting cavity inside the valve body 3 and includes a first port 701, a second port 702, and a third port 703. The two ends of the first port 701 are connected to the first channel 301 and the second channel 302 respectively. One end of the second port 702 is connected to the first port 701, and the other end is connected to the third channel 303 respectively. The third port 703 is connected to the first port 701. A motor 8 is fixedly mounted on the top surface of the valve body 3. An adjusting shaft 9 is fixedly connected to the output shaft of the motor 8 at one end, and the other end of the adjusting shaft 9 passes through the valve body 3 and extends into the mounting cavity of the valve body 3. The bottom end of the adjusting shaft 9 is fixedly connected to the valve core 7. It should be understood that in the filtration state, the motor 8 drives the adjusting shaft 9 to rotate, which in turn drives the valve core 7 to rotate, connecting the two ends of the first port 701 of the valve core 7 to the first channel 301 and the second channel 302 respectively. At this time, the third channel 303 is restricted from connecting to the first port 701 by the one-way valve 403, so that the liquid to be filtered can only pass through the first channel 301, the second channel 302 and the first port 701, thus realizing the connection between the external liquid to be filtered and the installation pipe 1, achieving the filterable state.

[0038] During the cleaning process, the motor 8 drives the adjusting shaft 9 to rotate, which in turn drives the valve core 7 to rotate, connecting the third port 703 of the valve core 7 with the first port 701. This isolates the valve core 7 of the three-way valve from the second channel 302, thereby isolating it from external devices and placing the nanofiltration assembly in a separate space to prepare for subsequent cleaning.

[0039] like Figure 2 and Figure 6 As shown, in one embodiment, it further includes: a mounting bracket 10, which is fixedly connected to the inner wall of the mounting tube 1 and has mounting ports 11 on its surface. The nanofiltration components are respectively fixedly inserted into the mounting ports 11. Specifically, by setting the mounting bracket 10, the mounting tube 1 is divided into two spaces and the nanofiltration components are supported, so that the liquid to be filtered must pass through the nanofiltration components before it can pass through the mounting tube 1.

[0040] like Figure 2 and Figure 6 As shown, in one embodiment, the nanofiltration assembly includes a membrane tube 12, the interior of which is a filterable ceramic core. The membrane tube 12 is fixedly inserted into the mounting port 11. It should be understood that by providing the membrane tube 12, filtration of the liquid passing through the nanofiltration assembly is achieved. Specifically, multiple membrane tubes 12 can be provided, and the number of mounting ports 11 can also be adapted to meet the actual filtration needs.

[0041] As Figure 2 , Figure 3 , Figure 4 and Figure 5 indicated, in one embodiment, the one-way valve 403 comprises: a communication port 40301, which is arranged in the interior of the movable joint 4 and communicates with the first joint 401 and the second joint 402 at two ends; and a sealing plate 40302, which is rotationally connected to the inner surface of the first joint 401 and blocks the communication port 40301. It should be understood that by arranging the sealing plate 40302, the one-way blocking of the communication port 40301 is realized, so that the liquid can only flow in a specified direction.

[0042] As Figure 3 and Figure 4 indicated, in one embodiment, the one-way valve 403 further comprises an elastic support 40303, one end of which is fixedly connected to the inner surface of the first joint 401 and the other end is in surface contact with the sealing plate 40302. It should be understood that the elastic support 40303 can be an elastic support rod, which elastically supports the sealing state of the sealing plate 40302, but can also provide elastic displacement when the liquid flows in the flow direction.

[0043] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present disclosure.

[0044] The above-described embodiments only express several implementation manners of the present disclosure, the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present disclosure. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present disclosure, a number of modifications and improvements can be made, which all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the appended claims.

Claims

1. A tubular nanofiltration membrane device comprising a mounting tube (1) and a plurality of nanofiltration modules, the plurality of nanofiltration modules being mounted inside the mounting tube (1), characterized in that, Also include: Two three-way valves, two said three-way valves each include a valve body (3), two said valve body (3) each includes a first channel (301), a second channel (302) and a third channel (303), two said first channel (301) is communicated with two ends of two installation pipe (1) respectively; Two movable joints (4), two said movable joints (4) include a first joint (401) and a second joint (402) and a one-way valve (403) arranged between the first joint (401) and the second joint (402); Wherein, the inner wall of two said third channel (303) is provided with a first thread (5), the surface of the first joint (401) and the second joint (402) is provided with a second thread (6) matched with the first thread (5), during cleaning, the first channel (301) of the three-way valve is communicated with the third channel (303), and the first joint (401) and the second joint (402) of one of the two movable joints (4) are changed in position and threaded communicated with the third channel (303), forming a communication state that can discharge liquid.

2. The tubular nanofiltration membrane device according to claim 1, characterized in that, Also include a valve core (7), the valve core (7) is rotatably arranged in the mounting cavity inside the valve body (3), and includes a first port (701), a second port (702) and a third port (703), both ends of the first port (701) are communicated with the first channel (301) and the second channel (302) correspondingly, one end of the second port (702) is communicated with the first port (701), the other end is communicated with the third channel (303) correspondingly, the third port (703) is communicated with the first port (701); motor (8), the motor (8) is fixedly installed on the top surface of the valve body (3); adjustment shaft (9), one end of the adjustment shaft (9) is fixedly connected with the output shaft of the motor (8), the other end of the adjustment shaft (9) penetrates the valve body (3) and extends to the inside of the mounting cavity of the valve body (3), the bottom end of the adjustment shaft (9) is fixedly connected with the valve core (7).

3. The tubular nanofiltration membrane device according to claim 2, characterized in that, Mounting frame (10), the mounting frame (10) is fixedly connected on the inner wall of the installation pipe (1), and the surface is provided with a mounting port (11), the nanofiltration assembly is respectively fixedly inserted in the mounting port (11).

4. The tubular nanofiltration membrane device according to claim 3, characterized in that, The nanofiltration assembly includes a membrane tube (12), the inside of the membrane tube (12) is a filterable ceramic core, the membrane tube (12) is fixedly inserted in the mounting port (11).

5. The tubular nanofiltration membrane device according to claim 4, characterized in that, The one-way valve (403) includes: a communication port (40301), the communication port (40301) is arranged in the inside of the movable joint (4), and both ends are communicated with the first joint (401) and the second joint (402) respectively; sealing plate (40302), the sealing plate (40302) is rotatably connected on the inner surface of the first joint (401), and the communication port (40301) is blocked.

6. The tubular nanofiltration membrane device according to any one of claims 1 to 5, characterized in that The one-way valve (403) further comprises an elastic support (40303), one end of the elastic support (40303) is fixedly connected to the inner surface of the first joint (401), and the other end is in surface contact with the sealing plate (40302).

Images