Tubular ultrafiltration membrane dredging device

Abstract

The utility model discloses a tubular ultrafiltration membrane dredging device, which is used for dredging a membrane tube of a tubular ultrafiltration membrane, and comprises a supercharger, a water supply tube and a dredging component, the dredging component is provided with a flushing channel, a water inlet of the water supply pipe is communicated with a water outlet of the supercharger, and a water outlet of the water supply pipe is communicated with a water inlet of the flushing channel; the dredging component comprises a conical dredging head, the flushing channel penetrates through the dredging head in the axial direction, and the dredging head is gradually shrunk in the water flow direction. When the tubular ultrafiltration membrane dredging device is applied, the dredging effect and the dredging efficiency of the tubular ultrafiltration membrane can be improved.

Description

Technical Field

[0001] This application relates to the technical field of membrane pore dredging, and particularly relates to a tube ultrafiltration membrane dredging device. Background Art

[0002] Due to advantages such as high water flux, high filtration efficiency, and environmental protection, tube ultrafiltration membranes are widely used in the separation of mud and water from various wastewaters. For example, in the treatment of landfill leachate. Tube ultrafiltration membranes usually have multiple membrane tubes inside, and the membrane tubes are used to filter the wastewater. During its operation, sludge is likely to form fouling due to various reasons, which can easily cause blockage of the membrane tubes and reduce the output of the tube ultrafiltration membrane. Therefore, it is necessary to dredge the tube ultrafiltration membrane to restore its treatment capacity.

[0003] In related technologies, a tube ultrafiltration membrane dredging device usually includes a water supply pipe and a nozzle, which are connected. The water supply pipe supplies water to the nozzle, and the nozzle sprays water flow to wash the fouling to dredge the membrane tube. Among them, the front end of the nozzle often becomes blunt and is in the shape of a semi-sphere, which results in a small penetration range at the front end, easy generation of flushing dead angles, poor dredging effect, and low dredging efficiency.

[0004] Therefore, how to provide a solution to overcome or alleviate the above defects is still a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0005] The purpose of this application is to provide a tube ultrafiltration membrane dredging device to improve the dredging effect and efficiency of the tube ultrafiltration membrane.

[0006] To solve the above technical problems, this application provides a tube ultrafiltration membrane dredging device for dredging the membrane tubes of a tube ultrafiltration membrane. The tube ultrafiltration membrane dredging device includes a booster, a water supply pipe, and a dredging component;

[0007] The dredging component has a flushing channel. The water inlet of the water supply pipe is connected to the water outlet of the booster, and the water outlet of the water supply pipe is connected to the water inlet of the flushing channel; the dredging component includes a conical dredging head, the flushing channel axially penetrates the dredging head, and the dredging head tapers in the water flow direction.

[0008] Optionally, the flushing channel has a first axis, and there is a first included angle between the outer side surface of the dredging head and the first axis, and the first included angle does not exceed 45 degrees.

[0009] Optionally, the first included angle is 15 degrees - 30 degrees.

[0010] Optionally, the dredging head has at least one reverse flushing channel;

[0011] The water inlet of the backwashing channel communicates with the flushing channel. The water outlet of the backwashing channel penetrates to the outer side of the dredging head. The backwashing channel inclines towards one end of the dredging head close to the water supply pipe.

[0012] Optionally, the backwashing channel has a second axis, and there is a second included angle between the second axis and the first axis. The second included angle b is 10 degrees - 60 degrees; and / or,

[0013] The inner diameter of the flushing channel is 0.5 mm - 2.5 mm; and / or,

[0014] The inner diameter of the backwashing channel is 0.5 mm - 2.5 mm.

[0015] Optionally, the water supply pipe is a high-pressure flexible hose.

[0016] Optionally, the dredging component further includes a connecting piece; the connecting piece is connected to the dredging head. The connecting piece has a first mounting hole which communicates with the flushing channel. The connecting piece is sleeved on the end of the water outlet of the high-pressure flexible hose through the first mounting hole. The connecting piece and the high-pressure flexible hose are connected by a crimping method; and / or,

[0017] The tubular ultrafiltration membrane dredging device further includes a water outlet pipe and a joint; the water inlet of the water outlet pipe communicates with the water outlet of the booster, and the water outlet of the water outlet pipe and the water inlet of the high-pressure flexible hose are communicated through the joint. The joint is a quick coupling.

[0018] Optionally, the tubular ultrafiltration membrane dredging device further includes a baffle;

[0019] The baffle has a second mounting hole. The baffle is sleeved on the water supply pipe through the second mounting hole. The inner diameter of the second mounting hole is larger than the outer diameter of the water supply pipe.

[0020] Optionally, the tubular ultrafiltration membrane dredging device further includes a lifting piece;

[0021] One end of the lifting piece is connected to the top of the baffle, and the other end of the lifting piece is installed on an external device.

[0022] Optionally, the baffle is circular, and the difference between the outer diameter of the baffle and the outer diameter of the tubular ultrafiltration membrane is 10 cm - 20 cm.

[0023] The tube ultrafiltration membrane dredging device provided by this application is provided with a booster, a water supply pipe and a dredging component. The water outlet of the booster is connected to the flushing channel of the dredging component through the water supply pipe. The dredging head in the dredging component is set to be conical and tapered along the water flow direction. During use, the front end of the conical dredging head has a large probing range and is not prone to flushing dead corners, which can improve the dredging effect and efficiency of the tube ultrafiltration membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 FIG. is a schematic structural diagram of the tube ultrafiltration membrane dredging device according to the embodiment provided by this application;

[0025] Figure 2 is Figure 1 an axial sectional view of the connection between the shown dredging component and the water supply pipe;

[0026] Figure 3 FIG. is a schematic installation structure diagram of the baffle in the tube ultrafiltration membrane dredging device according to the embodiment provided by this application.

[0027] The reference numerals in the above-mentioned drawings are explained as follows:

[0028] 1 - Booster;

[0029] 2 - Water supply pipe, 2a - Water supply channel;

[0030] 3 - Dredging component, 3a - Flushing channel, 3b - Outer side, 3c - First axis, 3d - Backwashing channel, 3e - Second axis, 3f - First mounting hole, 31 - Dredging head, 32 - Connector;

[0031] 4 - Outlet pipe;

[0032] 5 - Connector;

[0033] 6 - Baffle, 6a - Second mounting hole;

[0034] 7 - Lifting member;

[0035] 8 - External device;

[0036] a - First included angle, b - Second included angle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] In order to enable those skilled in the art to better understand the solution of this application, the following further detailed description of this application will be given in conjunction with the drawings and specific embodiments.

[0038] It should be specifically noted that: the terms "first", "second", etc. in this application are only for the convenience of describing two or more structures or components with the same or similar structures and / or functions, and do not represent a special limitation on the order and / or importance.

[0039] In this application, unless otherwise clearly specified and defined, the term "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meaning of the above terms in this application can be understood according to specific circumstances.

[0040] Please refer to Figures 1 to 2 , Figure 1 which is a schematic structural diagram of the tubular ultrafiltration membrane dredging device provided by the embodiments of this application. Figure 2 is Figure 1 an axial sectional view of the connection between the dredging component and the water supply pipe shown.

[0041] In the embodiments provided by this application, the tubular ultrafiltration membrane dredging device is used to dredge the membrane tube (not shown in the figure) of the tubular ultrafiltration membrane (not shown in the figure). The tubular ultrafiltration membrane dredging device includes a booster 1, a water supply pipe 2, and a dredging component 3; the dredging component 3 has a flushing channel 3a, the water inlet of the water supply pipe 2 is communicated with the water outlet of the booster 1, and the water outlet of the water supply pipe 2 is communicated with the water inlet of the flushing channel 3a; the dredging component 3 includes a conical dredging head 31, the flushing channel 3a axially penetrates through the dredging head 31, and the dredging head 31 tapers in the water flow direction.

[0042] It is not difficult to understand that the booster 1 has a water inlet, and its water inlet can be connected to a water source to introduce the water source into the booster 1, and the booster 1 is used to pressurize the water to obtain pressurized water. The water supply pipe 2 has a water supply channel 2a inside, and the water outlet of the water supply channel 2a is communicated with the water inlet of the flushing channel 3a. During use, the dredging head 31 of the dredging component 3 extends into the membrane tube. The pressurized water is sent from the booster 1 through the water supply channel 2a of the water supply pipe 2 into the flushing channel 3a of the dredging head 31 and sprayed out from the water outlet of the flushing channel 3a, so as to flush the dirt inside the membrane tube and realize the dredging of the membrane tube. During the dredging process, since the dredging head 31 is conical, the range and depth of its front end penetrating into the dirt are relatively large, and it is not easy to generate flushing dead corners, thereby improving the dredging effect and efficiency of the membrane tube.

[0043] In addition, since high-pressure water is introduced into the water supply pipe 2 and the dredging head 31, during use, under the action of water pressure, the water supply pipe 2 and the dredging head 31 are not easily bent and inclined relative to the axis of the membrane tube, so that the conical dredging head 31 is not easily scratched on the inner wall of the membrane tube.

[0044] It should be noted that the "cone" mentioned in this application can be a conical shape, a pyramidal shape, or a frustum of a cone obtained by cutting a part of the conical head as shown in Figure 2 or a frustum of a pyramid obtained by cutting a part of the pyramidal head, and there is no specific limitation.

[0045] In actual setting, the flushing channel 3a in the dredging head 31 has a first axis 3c as shown in Figure 2 the figure. There is a first included angle a between the outer side surface 3b of the dredging head 31 and the first axis 3c, and the size of the first included angle a is not limited.

[0046] In the embodiment provided by the present application, the first included angle a does not exceed 45 degrees. For example, it can be 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees or 45 degrees, and the specific value is not limited. In this way, the conical angle of the dredging head 31 is an acute angle, which is beneficial to obtaining a better membrane tube dredging effect.

[0047] It can be understood that the conical angle of the dredging head 31 can be twice the first included angle a. If this conical angle is too small, the tip of the dredging head 31 is likely to injure the staff, but the dredging effect is better. In other words, if this conical angle is too large, although it is not easy to injure the staff, the dredging effect is poor. In the embodiment of the present application, the first included angle a can be further set to 15 degrees - 30 degrees. In this way, the above-mentioned conical angle is between 30 degrees - 60 degrees, with a suitable size, which can not only obtain a better membrane tube dredging effect, but also make the tip of the dredging head 31 not easy to harm the staff, making the use of the tubular ultrafiltration membrane dredging device safer and more reliable.

[0048] As shown in Figure 2 the figure, in the embodiment provided by the present application, the first included angle a can specifically be 15 degrees, so that the conical angle of the dredging head 31 is 30 degrees. This angle can better balance the membrane tube dredging effect and the use safety of the dredging head 31.

[0049] Please combine Figure 1 and Figure 2 to understand that in the embodiment provided by the present application, the dredging head 31 further has at least one reverse flushing channel 3d; the water inlet of the reverse flushing channel 3d is communicated with the flushing channel 3a, the water outlet of the reverse flushing channel 3d penetrates through to the outer side surface 3b of the dredging head 31, and the reverse flushing channel 3d inclines towards the end of the dredging head 31 close to the water supply pipe 2.

[0050] Compared with the related technology where there is no reverse flushing channel 3d and the discharge efficiency of the fouling is relatively low, in the tubular ultrafiltration membrane dredging device provided by the embodiment of the present application, due to the reverse flushing channel 3d provided in the dredging head 31, the high-pressure water flow ejected from the flushing channel 3a can be used to flush the fouling inside the membrane tube in the front, break, cut and disperse the fouling, and the high-pressure water flow ejected from the reverse flushing channel 3d is used to flush the scattered fouling backward to the rear side, washing the fouling out of the membrane tube, improving the sewage discharge efficiency. At the same time, the inner wall of the membrane tube can also be further cleaned. Among them, the end of the dredging head 31 far from the water supply pipe 2 is the front, and the end close to the water supply pipe 2 is the rear.

[0051] It can be seen that the flushing channel 3a and the reverse flushing channel 3d of the dredging head 31 cooperate with each other, and a small amount of water flow can be used to thoroughly dredge the blocked substances and discharge them outside the pipe in time, and a series of dredging operations such as clog removal, cleaning and sewage discharge of the membrane tube can be efficiently realized.

[0052] During specific setting, the number of the reverse flushing channels 3d is not limited.

[0053] In the embodiment of the present application, a plurality of reverse flushing channels 3d are provided, and the plurality of reverse flushing channels 3d can be evenly spaced along the circumferential direction of the dredging head 31. In this way, uniform flushing of the scattered blocked substances and uniform cleaning of the inner wall of the membrane tube can be realized, so as to further improve the sewage discharge efficiency and the cleaning efficiency of the membrane tube.

[0054] Such as Figure 2 shown, the reverse flushing channel 3d has a second axis 3e, and there is a second included angle b between the second axis 3e and the first axis 3c. The reverse flushing channel 3d is inclined backward, in other words, the second included angle b does not exceed 90 degrees.

[0055] It is not difficult to understand that the size of the second included angle b affects the cleaning effect of the inner wall of the membrane tube. Specifically, when the second included angle b is too small, the cleaning effect of the dredging head 31 on the inner wall of the membrane tube is poor, but the inner wall of the membrane tube is not easily damaged. On the contrary, when the second included angle b is too large, the cleaning effect of the dredging head 31 on the inner wall of the membrane tube is good, but the impact force of the water flow ejected from the reverse flushing channel 3d on the inner wall of the membrane tube is large, and the inner wall of the membrane tube is easily damaged. In the embodiment provided by the present application, the second included angle b can be further set to 10 degrees - 60 degrees. For example, it can be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees or 60 degrees, and the specific setting is not limited. In this way, while the dredging head 31 can better clean the inner wall of the membrane tube, the impact force of the reverse flushing water flow on the inner wall of the membrane tube can be relatively guaranteed within a suitable range, so that the inner wall of the membrane tube is not easily damaged.

[0056] Such as Figure 2 shown, in the embodiment of the present application, the second included angle b can be specifically 30 degrees, which can better balance the cleaning effect of the dredging head 31 on the inner wall of the membrane tube, the flushing effect on the blocked substances, and the safety of cleaning the inner wall of the membrane tube.

[0057] During specific setting, the inner diameters of the flushing channel 3a and the reverse flushing channel 3d are not limited.

[0058] It is not difficult to understand that the smaller the inner diameter of the flushing channel 3a, the smaller the flow rate of the flushing water flow, and the worse the flushing effect on the fouling. On the contrary, the larger the inner diameter of the flushing channel 3a, the larger the flow rate of the flushing water flow, and the better the flushing effect on the fouling. However, when the inner diameter of the flushing channel 3a is too large, the strength of the dredging head 31 is likely to be reduced. In the embodiment provided by the present application, the inner diameter of the flushing channel 3a is 0.5 mm - 2.5 mm. For example, it can be 0.5 mm, 1 mm, 1.5 mm, 2 mm or 2.5 mm. In this way, on the basis of ensuring the flushing effect on the fouling, the strength of the dredging head 31 can be relatively ensured.

[0059] In the embodiment of the present application, the inner diameter of the flushing channel 3a can specifically be 1.5 mm, which can better balance the flushing effect on the fouling and the strength of the dredging head 31.

[0060] The reverse flushing channel 3d is similar to the flushing channel 3a. The smaller its inner diameter, the smaller the flow rate of the reverse flushing water flow, and the worse the cleaning effect on the inner wall of the membrane tube and the discharging effect on the fouling. On the contrary, the larger the inner diameter, the larger the flow rate of the reverse flushing water flow, and the better the cleaning effect on the inner wall of the membrane tube and the discharging effect on the fouling. However, when the inner diameter of the reverse flushing channel 3d is too large, the strength of the dredging head 31 is likely to be reduced. In the embodiment provided by the present application, the inner diameter of the reverse flushing channel 3d is 0.5 mm - 2.5 mm. For example, it can be 0.5 mm, 1 mm, 1.5 mm, 2 mm or 2.5 mm. In this way, on the basis of ensuring the cleaning effect on the inner wall of the membrane tube and the discharging effect on the fouling, the strength of the dredging head 31 can be relatively ensured.

[0061] In the embodiment of the present application, the inner diameter of the reverse flushing channel 3d can specifically be 1.5 mm, which can better balance the cleaning effect on the inner wall of the membrane tube, the discharging effect on the fouling and the strength of the dredging head 31.

[0062] In actual setting, the material of the water supply pipe 2 is not limited.

[0063] In the embodiment provided by the present application, the water supply pipe 2 is a high-pressure hose. Compared with the related art where a stainless steel pipe is usually used as the water supply pipe and it is inconvenient to carry, since the tubular ultrafiltration membrane dredging device provided by the embodiment of the present application uses a high-pressure hose as the water supply pipe 2, the water supply pipe 2 can be rolled up when not in use, occupying a relatively compact space and being convenient to carry. When in use, just spread out the water supply pipe 2, and it is also convenient to use. At the same time, the high-pressure hose is also a common material on site, and it is simple and fast to put into use. In addition, the high-pressure hose can generally have a structure with a metal skeleton lining and a rubber protective outer sheath. It not only has sufficient strength, making it not easy to deform and bend during the water passing process, thus not easily affecting the dredging operation of the membrane tube, but also has high wear resistance and is not easily damaged.

[0064] During specific setting, there is no limit on the outer diameter size of the water supply pipe 2.

[0065] It can be understood that when the outer diameter of the water supply pipe 2 is too small, it is not easy to manufacture, and when it is too large, it is not easy to insert into the inner part of the membrane tube, which will affect the smooth progress of the membrane tube dredging work. In the embodiment provided by the present application, the inner diameter of the water supply pipe 2 can be set to be 2 mm - 3 mm smaller than the inner diameter of the membrane tube. For example, if the inner diameter of the membrane tube is 8.5 mm, the inner diameter of the water supply pipe 2 can be 5.5 mm - 6.5 mm, specifically 6.5 mm, so that the water supply pipe 2 can be easily inserted into the inner part of the membrane tube and the dredging operation can be carried out smoothly, and it also makes the water supply pipe 2 easy to manufacture.

[0066] When specifically setting, the structure of the dredging component 3 and the connection manner between it and the water supply pipe 2 are not limited.

[0067] Please combine Figure 1 and Figure 2 It can be understood that in the embodiment provided by the present application, the dredging component 3 further includes a connecting piece 32; the connecting piece 32 is connected to the dredging head 31, the connecting piece 32 has a first mounting hole 3f, the first mounting hole 3f is communicated with the flushing channel 3a, the connecting piece 32 is sleeved on the end part of the water outlet end of the high-pressure hose through the first mounting hole 3f, and the connecting piece 32 and the high-pressure hose are connected by a crimping method.

[0068] Specifically, the end part of the water outlet end of the high-pressure hose can be inserted into the end part of the water inlet end of the connecting piece 32, and a special crimping tool, such as a hydraulic crimper, etc., is used to perform radial crimping on both sides of the connecting piece 32 to form a hexagonal deformation.

[0069] Compared with the related art in which the nozzle and the water supply pipe are connected by a threaded connection method and are prone to leakage, in the tubular ultrafiltration membrane dredging device provided by the embodiment of the present application, since the connecting piece 32 of the dredging component 3 and the high-pressure hose are connected by a crimping method, the tensile and pull-out resistance of the connection between the dredging component 3 and the high-pressure hose can be improved, so that the connection is not easy to loosen. Moreover, the high-pressure hose can be radially compressed and clamped by the O-ring in the crimping connection structure, which can improve the sealing performance of the connection. At the same time, the crimping tool can press the connection position into a hexagonal shape, so that the connection is not easy to rotate during use. All these make the connection between the dredging component 3 and the high-pressure hose not easy to leak during the process of dredging the membrane tube, and can also extend the service life of the dredging component 3 and the high-pressure hose, and ensure the smooth and reliable progress of the ultrafiltration membrane dredging work. In addition, the crimping connection structure is easy to process, and after the dredging component 3 and the high-pressure hose are installed, basically no maintenance is required, which can reduce the maintenance cost of the tubular ultrafiltration membrane dredging device.

[0070] It should be noted that the high-pressure hose can have the same strength throughout, or the part used for connecting with the connecting piece 32 can be set to have a greater strength than the rest of the part, for example, a thicker thickness, and the specific setting is not limited. Obviously, the latter can make the connection more difficult to deform during the crimping process.

[0071] When specifically setting, the material of the dredging head 31 can be stainless steel, copper alloy or aluminum alloy, and the present application does not limit this. As an alternative solution, the dredging head 31 is made of stainless steel, which not only has a long service life, but also has high plasticity and toughness, and is not easily broken or damaged during the crimping process.

[0072] When specifically setting, the dredging head 31 and the connecting member 32 can be integrally formed, and are connected by welding or clamping, etc., or can be integrally formed as shown in Figure 2 , and the present application does not limit this. Obviously, the integral formation of the two makes it not easy to generate leakage at the dredging component 3, which is more conducive to the smooth progress of the membrane tube dredging work.

[0073] When specifically setting, the axial length of the first mounting hole 3f in the connecting member 32 can be equal to the axial length of the connecting member 32, that is, the flushing channel 3a can be only arranged in the dredging head 31, or the axial length of the first mounting hole 3f can be less than the axial length of the connecting member 32 as shown in Figure 2 , that is, the flushing channel 3a can be partly arranged in the dredging head 31 and partly arranged in the connecting member 32. The first mounting hole 3f is a stepped hole communicating with the flushing channel 3a, and the present application does not limit this.

[0074] In actual setting, the connection method between the high-pressure hose and the booster 1 is not limited.

[0075] In the embodiment provided by the present application, as shown in Figure 1 , the tubular ultrafiltration membrane dredging device further includes a water outlet pipe 4 and a joint 5; the water inlet of the water outlet pipe 4 is communicated with the water outlet of the booster 1, and the water outlet of the water outlet pipe 4 and the water inlet of the high-pressure hose are communicated through the joint 5, and the joint 5 is a quick joint. In this way, the disassembly and installation of the high-pressure hose can be carried out quickly, which can further improve the dredging efficiency of the tubular ultrafiltration membrane and has a low cost.

[0076] Moreover, compared with the related art in which there are many intermediate connecting members on the water supply pipe and there are many leakage-prone points, the tubular ultrafiltration membrane dredging device provided by the embodiment of the present application uses a crimping connection method between the water outlet end of the water supply pipe 2 and the dredging component 3, so that there is no other connection joint in the whole device except the quick joint at the connection between the water inlet end of the water supply pipe 2 and the booster 1, which can reduce the number of leakage-prone points and relatively ensure the smooth progress of the membrane tube dredging work.

[0077] It should be noted that, compared with the related art where multiple membrane-passing branch pipes are connected to the water outlet of the water supply pipe, which easily causes mutual interference among the branch pipes during operation, the tubular ultrafiltration membrane dredging device provided in the embodiment of the present application only connects one dredging component 3 to the water outlet of the water supply pipe 2. During use, there is no problem of mutual interference between the pipes, enabling the dredging work to proceed smoothly, and it has a simple structure, convenient and fast installation.

[0078] During specific setting, the structural form of the booster 1 is not limited. Exemplarily, the booster 1 can be the booster of a car wash machine. Specifically, the cleaning gun head of the car wash machine can be removed and replaced with the water supply pipe 2 and the dredging component 3. In this way, since the car wash machine is a relatively simple, mature, stable and economical product on the market, transforming it into a booster 1 dedicated to membrane pipe dredging can reduce the cost of membrane pipe dredging, save investment, and is also relatively simple and fast to put into use.

[0079] Among them, the booster 1 can have a pressure regulating function, and can adjust the pressure at the water outlet to be between 0.3 MPa and 0.4 Mpa (the operating pressure of the tubular ultrafiltration membrane is between 0.4 MPa and 0.5 MPa), so that the water flow pressure sprayed out by the dredging head 31 is within a suitable range, so that the dredging water flow is not easy to damage the membrane pipe. At the same time, this pressure range can ensure that the flexible high-pressure hose is not easy to bend, making the tip of the hard-material dredging head 31 less likely to damage the membrane pipe, and can also make the backwashing water flow have a suitable pressure, so that the dirt blockage is more thoroughly removed and discharged.

[0080] Please refer to Figure 3 , Figure 3 which is the schematic diagram of the installation structure of the baffle in the tubular ultrafiltration membrane dredging device provided by the embodiment of the present application.

[0081] In the embodiment provided by the present application, the tubular ultrafiltration membrane dredging device further includes a baffle 6; the baffle 6 has a second mounting hole 6a, and the baffle 6 is sleeved on the water supply pipe 2 through the second mounting hole 6a, and the inner diameter of the second mounting hole 6a is larger than the outer diameter of the water supply pipe 2. In this way, the baffle 6 can effectively block the dirt blockage flushed out by the backwashing water flow behind the membrane pipe, so that the dirt blockage is not easy to cause splashing pollution to the operator, and the setting of the baffle 6 is not easy to interfere with the movement of the dredging component 3 and the water supply pipe 2 into the membrane pipe, taking into account the cleanliness and smoothness of the dredging work.

[0082] As Figure 3 shown, in the embodiment of the present application, the tubular ultrafiltration membrane dredging device further includes a lifting member 7; one end of the lifting member 7 is connected to the top of the baffle 6, and the other end of the lifting member 7 is installed on the external device 8.

[0083] In this way, by installing the baffle 6 on the external device 8 through the hoisting member 7, not only can the baffle 6 be more conveniently taken and placed, which is beneficial to further improving the dredging efficiency of the membrane tube, but also after the dredging component 3 and the water supply pipe 2 are inserted into the membrane tube, the other end of the hoisting member 7 can be relatively fixed after the second mounting hole 6a of the baffle 6 is substantially coaxial with the membrane tube, so that the position of the baffle 6 is relatively stable. Thus, the baffle 6 is less likely to affect the movement of the water supply pipe 2 into the membrane tube, further ensuring the shielding effect on the fouling and the smooth progress of the dredging work.

[0084] When specifically set, the hoisting member 7 can be a lifting rope or a chain, and the present application does not limit this.

[0085] As Figure 3 shown, in the embodiment of the present application, the hoisting member 7 is a lifting rope, one end of which can be tied to the upper part of the baffle 6, and the other end can be tied to the external device 8 above the tubular ultrafiltration membrane. During use, the position of the baffle 6 can be adjusted by adjusting the position of the lifting rope on the external device 8 according to the position of the membrane tube to be dredged, further ensuring the shielding effect on the fouling.

[0086] It should be noted that the position of the baffle 6 can be adjusted when dredging each membrane tube, or the membrane tubes inside the tubular ultrafiltration membrane can be partitioned. Each area includes several membrane tubes. When dredging the membrane tubes in each area, the position of the baffle 6 is adjusted. In this way, it is more convenient and has higher efficiency.

[0087] When specifically set, the shape of the baffle 6 is not limited, as long as it can block the fouling carried out by the backwashing water flow. As Figure 3 shown, in the embodiment provided by the present application, the baffle 6 can be circular. In this way, the baffle 6 is easy to process and manufacture, and has a good shielding effect on the fouling carried out by the backwashing water flow.

[0088] When specifically set, the size of the baffle 6 is not limited. It can be understood that the larger the size of the baffle 6, the better the shielding effect on the fouling. However, if the baffle 6 is too large, it is inconvenient to use and will also affect the movement of the dredging component 3 and the water supply pipe 2 into the membrane tube. In the embodiment of the present application, the difference between the outer diameter of the baffle 6 and the outer diameter of the tubular ultrafiltration membrane can be 10 cm - 20 cm, that is, the outer diameter of the baffle 6 is 10 cm - 20 cm larger than the outer diameter of the tubular ultrafiltration membrane. In this way, it can not only ensure that the fouling carried out by the backwashing water flow is not easily splashed onto the operator's body, but also ensure that the baffle 6 is more convenient to use, and also ensure that the baffle 6 is not likely to affect the movement of the dredging component 3 and the water supply pipe 2 into the membrane tube, ensuring the smooth progress of the membrane tube dredging work.

[0089] The tube ultrafiltration membrane dredging device provided by the above embodiments of the present application can dredge the membrane tubes when the tube ultrafiltration membrane needs to be repaired. The following describes the working process of the tube ultrafiltration membrane dredging device provided by the above embodiments of the present application with reference to the accompanying drawings:

[0090] First, spread out the coiled high-pressure hose, quickly connect its water inlet end and the water outlet pipe 4 at the water outlet end of the booster 1 with a quick coupling, and pass the dredging component 3 at its water outlet end through the baffle 6;

[0091] Then, start the booster 1, adjust the outlet pressure of the booster 1 to a preset pressure value, insert the dredging component 3 into the membrane tube of the tube ultrafiltration membrane to be dredged. The flushing water flow ejected from the flushing channel 3a in the dredging head 31 flushes the dirt blockage inside the membrane tube. The dirt blockage is dispersed inside the membrane tube. The reverse flushing water flow ejected from the circumferentially evenly distributed reverse flushing channels 3d in the dredging head 31 evenly flushes the inside of the membrane tube, flushes the dirt blockage out of the membrane tube backward, and cleans the inner wall of the membrane tube. At the same time, the baffle 6 blocks the dirt blockage flushing backward in front, making it not easy to contaminate the operator. During this process, control the high-pressure hose to drive the dredging head 31 to gradually move forward to the front end of the membrane tube until reaching the front end of the membrane tube;

[0092] Finally, slowly pull out the high-pressure hose and the dredging component 3, and use the reverse flushing water flow to thoroughly flush the remaining dirt blockage inside the membrane tube to complete the dredging of the entire membrane tube. Subsequently, insert the dredging component 3 into the next membrane tube and repeat the above steps to dredge the next membrane tube. In this way, cycle repeatedly to complete the dredging of all the membrane tubes inside the tube ultrafiltration membrane.

[0093] It can be seen that the supporting materials of the tube ultrafiltration membrane dredging device provided by the above embodiments of the present application are basically available on site, can be assembled simply and quickly, are convenient and fast to use, have a good dredging effect on the membrane tubes of the tube ultrafiltration membrane, and have a high dredging efficiency. It can complete the repair task of the tube ultrafiltration membrane in time. At the same time, it is not easy to damage the inner wall of the membrane tube, and it is even less likely to contaminate the operator, and the use safety and cleanliness are relatively high.

[0094] In this article, specific examples are used to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the device of the present application and its core idea. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present application, several improvements and modifications can still be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A tubular ultrafiltration membrane dredging device for dredging the membrane tubes of a tubular ultrafiltration membrane, characterized in that, The tubular ultrafiltration membrane dredging device includes a booster (1), a water supply pipe (2), and a dredging component (3); The dredging component (3) has a flushing channel (3a). The water inlet of the water supply pipe (2) is communicated with the water outlet of the booster (1), and the water outlet of the water supply pipe (2) is communicated with the water inlet of the flushing channel (3a). The dredging component (3) includes a conical dredging head (31). The flushing channel (3a) axially penetrates through the dredging head (31), and the dredging head (31) tapers in the water flow direction.

2. The tube ultrafiltration membrane dredging device according to claim 1, characterized in that, The flushing channel (3a) has a first axis (3c). There is a first included angle (a) between the outer side surface (3b) of the dredging head (31) and the first axis (3c), and the first included angle (a) does not exceed 45 degrees.

3. The tubular ultrafiltration membrane dredging device according to claim 2, characterized in that, The first included angle (a) is 15 degrees - 30 degrees.

4. The tube ultrafiltration membrane dredging device according to claim 2 or 3, characterized in that, The dredging head (31) has at least one reverse flushing channel (3d); The water inlet of the reverse flushing channel (3d) is communicated with the flushing channel (3a), the water outlet of the reverse flushing channel (3d) penetrates to the outer side surface (3b) of the dredging head (31), and the reverse flushing channel (3d) inclines towards the end of the dredging head (31) close to the water supply pipe (2).

5. The tubular ultrafiltration membrane dredging device according to claim 4, characterized in that, The reverse flushing channel (3d) has a second axis (3e). There is a second included angle (b) between the second axis (3e) and the first axis (3c), and the second included angle (b) is 10 degrees - 60 degrees; and / or, The inner diameter of the flushing channel (3a) is 0.5 mm - 2.5 mm; and / or, The inner diameter of the reverse flushing channel (3d) is 0.5 mm - 2.5 mm.

6. The tubular ultrafiltration membrane dredging device according to any one of claims 1 to 3, characterized in that, The water supply pipe (2) is a high-pressure flexible hose.

7. The tubular ultrafiltration membrane dredging device according to claim 6, wherein The dredging component (3) further includes a connecting piece (32); the connecting piece (32) is connected to the dredging head (31). The connecting piece (32) has a first mounting hole (3f), the first mounting hole (3f) is communicated with the flushing channel (3a), the connecting piece (32) is sleeved on the end of the water outlet of the high-pressure flexible hose through the first mounting hole (3f), and the connecting piece (32) is connected to the high-pressure flexible hose by a crimping method; and / or, The tubular ultrafiltration membrane dredging device further includes a water outlet pipe (4) and a joint (5); the water inlet of the water outlet pipe (4) is communicated with the water outlet of the booster (1), the water outlet of the water outlet pipe (4) and the water inlet of the high-pressure flexible hose are communicated through the joint (5), and the joint (5) is a union joint.

8. The tubular ultrafiltration membrane dredging device according to any one of claims 1 to 3, characterized in that The tubular ultrafiltration membrane dredging device further includes a baffle (6); The baffle (6) has a second mounting hole (6a). The baffle (6) is sleeved on the water supply pipe (2) through the second mounting hole (6a), and the inner diameter of the second mounting hole (6a) is larger than the outer diameter of the water supply pipe (2).

9. The tubular ultrafiltration membrane dredging device according to claim 8, characterized in that, The tubular ultrafiltration membrane dredging device further includes a lifting piece (7); One end of the lifting piece (7) is connected to the top of the baffle (6), and the other end of the lifting piece (7) is installed on an external device (8).

10. The tubular ultrafiltration membrane dredging device according to claim 8, characterized in that, The baffle plate (6) is circular, and the difference between the outer diameter of the baffle plate (6) and the outer diameter of the tubular ultrafiltration membrane is 10 cm - 20 cm.

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