Ultrafiltration membrane emptying system

Abstract

The present invention belongs to the technical field of ultrafiltration membrane cleaning, and specifically is an ultrafiltration membrane emptying system, comprising a frame, an ultrafiltration unit and a cleaning unit, the cleaning unit comprising a conduit, a control valve and a detection component, the conduit is fixedly connected and communicated with one end of the water outlet pipe, the control valve is used to control the opening and closing of the conduit, the detection component is used to detect the water pressure in the conduit, and the diaphragm covers the outside of the conduit; after the high-pressure backwash water in the conduit breaks through the diaphragm, the high-pressure backwash water sprays upward and enters the inside of the detection rod through a guide hole, and then the backwash water uses its own pressure to quickly push the control switch, so that the control switch is triggered to open, and the water pressure boosting device and the water pump circuit in the water storage tank are interrupted, so that the cleaning unit can automatically intervene, prevent the high-pressure backwash water from entering the ultrafiltration membrane component, and protect the ultrafiltration membrane in the ultrafiltration membrane component from being easily damaged by high water pressure impact.

Description

Technical Field

[0001] The invention belongs to the technical field of ultrafiltration membrane cleaning, in particular to an ultrafiltration membrane emptying system. Background Art

[0002] Ultrafiltration membrane is a polymer semipermeable membrane used in the ultrafiltration process to separate polymer colloids or suspended particles of a certain size from the solution. It is generally made of polymer materials such as cellulose acetate, cellulose acetate esters, polyethylene, polysulfones and polyamides. Ultrafiltration membranes are generally pre-made into various types of membrane components such as tubular, plate-type, roll-type, capillary type, and then multiple components are assembled together to increase the filtration area and facilitate maintenance. Ultrafiltration membranes are mainly suitable for removing colloidal particles and macromolecules, and can separate solutions with a concentration of less than 10%. They are widely used in filtration treatment in industrial processing.

[0003] After the ultrafiltration membrane assembly has been used for a period of time, because there are about 6 billion 0.01 micron micropores on the ultrafiltration membrane tube wall, the pore size only allows water molecules, beneficial minerals and trace elements in the water to pass through, and the lower limit of the volume of bacteria in the world is currently known to be 0.2 microns, so bacteria and colloids, rust, suspended matter, sediment, macromolecular organic matter, etc. that are much larger than bacteria can be intercepted by the ultrafiltration membrane, so it is necessary to clean the inside of the ultrafiltration membrane assembly regularly to ensure that the ultrafiltration membrane assembly can perform filtering work normally;

[0004] The existing methods for cleaning ultrafiltration membranes mainly include forward washing, backwashing, and air washing, among which backwashing is to allow purified water to enter the ultrafiltration fiber from the clear liquid side and flow through the membrane to the concentrated water side, and then use a large flow of backwash water to wash away the pollutants in the membrane pores and the surface of the hollow fiber membrane, thereby achieving backwashing and emptying of the ultrafiltration membrane to ensure the cleanliness of the ultrafiltration membrane. However, the backwashing and emptying of the ultrafiltration membrane requires controlling the water pressure to prevent excessive water pressure from causing the ultrafiltration membrane to be damaged by high pressure. The existing cleaning water pressure mainly relies on personnel to observe the pressure gauge. If the equipment for conveying clean water is abnormal during night work, resulting in an increase in the conveying water pressure, and the personnel fail to see and intervene in time due to fatigue, it is easy for clean water with a large pressure to enter the ultrafiltration membrane assembly, causing the ultrafiltration membrane assembly to be damaged by pressure.

[0005] In view of this, the present invention solves the above technical problems by proposing an ultrafiltration membrane emptying system. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, the present invention proposes an ultrafiltration membrane emptying system to solve the problem that the existing ultrafiltration membrane cleaning water pressure mainly relies on personnel to observe the pressure gauge and then adjust the water pressure. When abnormal water pressure occurs and the personnel do not intervene in time, it is easy to cause the ultrafiltration membrane assembly to be damaged by pressure.

[0007] The technical solution adopted by the present invention to solve the technical problem is:

[0008] An ultrafiltration membrane emptying system according to the present invention comprises:

[0009] frame;

[0010] An ultrafiltration unit, the ultrafiltration unit is fixedly connected to the frame, and the ultrafiltration unit is used to filter industrial products;

[0011] Also includes:

[0012] A cleaning unit, the cleaning unit is fixedly connected to the frame and is located on the side of the ultrafiltration unit;

[0013] The cleaning unit is used to clean the ultrafiltration unit.

[0014] The ultrafiltration unit comprises:

[0015] Ultrafiltration membrane assembly, the ultrafiltration membrane assembly is an existing tubular membrane assembly;

[0016] A water inlet pipe, the water inlet pipe is fixedly connected to the frame, and the water inlet pipe is communicated with the upper end of the ultrafiltration membrane assembly;

[0017] A water outlet pipe is fixedly connected to the bottom of the frame and is located below the water inlet pipe. The water outlet pipe is communicated with the bottom of the ultrafiltration membrane assembly.

[0018] The cleaning unit comprises:

[0019] A conduit, the conduit being fixedly connected and in communication with one end of the water outlet pipe;

[0020] A control valve, the control valve is fixedly connected to the conduit, and the control valve is used to control the opening and closing of the conduit;

[0021] A detection component is fixedly connected to the outside of the conduit, and is used to detect the water pressure in the conduit.

[0022] A water tank is fixedly connected to the inner side of the frame, and the water tank is communicated with one end of the conduit.

[0023] The detection component comprises:

[0024] A fixing plate, the fixing plate is fixedly connected to the outside of the conduit, and the fixing plate is made of rubber;

[0025] A wedge-shaped block, wherein the wedge-shaped block is fixedly connected to two sides of the fixing plate;

[0026] Fixing holes, which are opened on both sides of the fixing plate and penetrate the wedge-shaped block;

[0027] A diaphragm, the diaphragm covers the outside of the catheter, and circular holes are opened at corresponding positions of the catheter and the diaphragm;

[0028] A detection rod, wherein the lower end of the detection rod is fixedly connected to the frame, and the upper end of the detection rod is located above the diaphragm.

[0029] A guide hole is provided inside the detection rod;

[0030] A control switch is arranged above the guide hole, and the control switch is slidably connected to the inner wall of the detection rod;

[0031] Through holes are provided on both sides of the guide hole and at the bottom of the detection rod.

[0032] The opening diameter of the upper end of the guide hole is smaller than the opening diameter of the lower end.

[0033] A groove is provided on the inner side of the fixing plate and between the wedge blocks.

[0034] The sizes of the wedge blocks fixedly connected to each of the fixing plates are different.

[0035] A recovery box is fixedly connected to the lower part of the water storage tank, and a viewing window is fixedly connected to the outer side of the recovery box.

[0036] The beneficial effects of the present invention are as follows:

[0037] 1. An ultrafiltration membrane emptying system described in the present invention, after the high-pressure backwash water in the conduit breaks through the diaphragm, the high-pressure backwash water sprays upward and enters the interior of the detection rod through the guide hole, and the backwash water uses its own pressure to quickly push the control switch, so that the control switch is triggered to open, and the water pressure boosting equipment and the water pump circuit in the water storage tank are interrupted, which solves the problem that the existing cleaning process mainly relies on personnel to observe the water pressure gauge to know the backwash water pressure in the ultrafiltration membrane assembly. If the personnel become tired during operation at night and fail to promptly discover the abnormal value displayed on the water pressure gauge, it is easy to cause high-pressure backwash water to enter the ultrafiltration membrane assembly and cause damage to the ultrafiltration membrane.

[0038] 2. An ultrafiltration membrane emptying system described in the present invention has wedge blocks fixedly connected on both sides of a fixed plate, and a wedge groove adapted to the wedge blocks is opened in the conduit, so that when the fixed plate fixes the diaphragm, the wedge blocks can squeeze the diaphragm in the wedge groove to prevent the diaphragm from sliding, and the size of each wedge block is different, so that personnel need to place the fixed plate at a specified position on the conduit to ensure that the wedge blocks on both sides of the fixed plate are fully matched with the wedge grooves, preventing personnel from arbitrarily placing the fixed plate, because machining errors may cause gaps between the diaphragm and the fixed plate, resulting in water leakage at the circular hole of the conduit. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention will be further described below in conjunction with the accompanying drawings.

[0040] Figure 1 is a stereogram of the device of the present invention;

[0041] Figure 2 is a front view of the device of the present invention;

[0042] Figure 3 yes Figure 1 A partial enlarged view of point A shown;

[0043] Figure 4 yes Figure 2 A partial enlarged view of point B is shown;

[0044] Figure 5 is a stereogram of the detection assembly of the present invention;

[0045] Figure 6 is a three-dimensional diagram of the fixing plate of the present invention;

[0046] Figure 7 is a stereogram of the detection rod of the present invention;

[0047] Figure 8 It is a side sectional view of the detection rod of the present invention.

[0048] In the figure: 1. frame; 2. ultrafiltration unit; 21. water inlet pipe; 22. water outlet pipe; 3. cleaning unit; 31. catheter; 32. control valve; 33. detection component; 331. fixing plate; 332. wedge block; 333. fixing hole; 334. groove; 335. diaphragm; 34. detection rod; 341. guide hole; 342. through hole; 343. control switch; 4. water storage tank; 5. recovery tank; 51. window. DETAILED DESCRIPTION

[0049] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0050] The embodiment of the present invention provides an ultrafiltration membrane emptying system, which solves the technical problem that the existing ultrafiltration membrane cleaning water pressure mainly depends on personnel observing the pressure gauge and then adjusting the water pressure. When the water pressure is abnormal and the personnel do not intervene in time, it is easy to cause the ultrafiltration membrane assembly to be damaged by pressure.

[0051] The technical solution in the embodiment of the present invention is to solve the above technical problems. The overall idea is as follows: by using a diaphragm 335 with a pressure bearing capacity similar to that of the ultrafiltration membrane inside the ultrafiltration membrane assembly, the diaphragm 335 can be made of rubber, silicone and other materials. When the water pressure in the conduit 31 is greater than the pressure bearing capacity of the ultrafiltration membrane, the water pressure in the conduit 31 will first break through the diaphragm 335 to release the pressure. At the same time, the water in the conduit 31 can use its own pressure to trigger the control switch 343 to open, thereby closing the cleaning unit 3 to prevent high-pressure backwash water from entering the ultrafiltration membrane assembly and causing damage to the ultrafiltration membrane.

[0052] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0053] like Figures 1 to 8 As shown, an embodiment of the present invention provides an ultrafiltration membrane emptying system, comprising:

[0054] Rack 1;

[0055] An ultrafiltration unit 2, wherein the ultrafiltration unit 2 is fixedly connected to the frame 1, and the ultrafiltration unit 2 is used to filter industrial products;

[0056] Also includes:

[0057] A cleaning unit 3, wherein the cleaning unit 3 is fixedly connected to the frame 1 and is located on the side of the ultrafiltration unit 2;

[0058] The cleaning unit 3 is used to clean the ultrafiltration unit 2 .

[0059] In this embodiment, the personnel first fix the rack 1 at a certain position in the workshop according to the actual workshop site and processing conditions, and then fix the ultrafiltration unit 2 and the cleaning unit 3 on the rack 1, and perform relevant filtration tests to ensure that the ultrafiltration unit 2 and the cleaning unit 3 can operate stably.

[0060] like Figure 1-2 As shown, the ultrafiltration unit 2 comprises:

[0061] Ultrafiltration membrane assembly, the ultrafiltration membrane assembly is an existing tubular membrane assembly;

[0062] A water inlet pipe 21, the water inlet pipe 21 is fixedly connected to the frame 1, and the water inlet pipe 21 is communicated with the upper end of the ultrafiltration membrane assembly;

[0063] The water outlet pipe 22 is fixedly connected to the bottom of the frame 1 and is located below the water inlet pipe 21. The water outlet pipe 22 is connected to the bottom of the ultrafiltration membrane assembly.

[0064] Furthermore, after the personnel have completed the testing of the ultrafiltration unit 2 and the cleaning unit 3, the ultrafiltration membrane assembly in the ultrafiltration unit 2 is connected to the water inlet pipe 21 and the water outlet pipe 22 through pipes, wherein the ultrafiltration membrane assembly is an existing tubular standard membrane assembly, which can efficiently filter and treat the wastewater generated during the processing, thereby reducing environmental pollution;

[0065] When the ultrafiltration membrane assembly is working, first the wastewater produced by the factory processing enters the ultrafiltration membrane assembly through the water inlet pipe 21, and then the ultrafiltration membrane group filters the wastewater, so that the pollutants in the wastewater remain inside the ultrafiltration membrane assembly, and then the filtered water is discharged through the water outlet pipe 22, so that the wastewater can be filtered quickly, reducing environmental pollution and waste of water resources.

[0066] like Figure 1 and Figure 3-4 As shown, the cleaning unit 3 includes:

[0067] A conduit 31, wherein the conduit 31 is fixedly connected to and communicates with one end of the water outlet pipe 22;

[0068] A control valve 32, wherein the control valve 32 is fixedly connected to the conduit 31, and the control valve 32 is used to control the opening and closing of the conduit 31;

[0069] A detection component 33, wherein the detection component 33 is fixedly connected to the outside of the conduit 31, and the detection component 33 is used to detect the water pressure in the conduit 31;

[0070] A water tank 4 is fixedly connected to the inner side of the frame 1 , and the water tank 4 is communicated with one end of the conduit 31 .

[0071] In this embodiment, after the ultrafiltration membrane assembly in the ultrafiltration unit 2 has been working for a period of time, because there are about 6 billion 0.01 micron micropores on the ultrafiltration membrane tube wall, the pore size only allows water molecules, beneficial minerals and trace elements in the water to pass through, and the lower limit of the volume of bacteria in the world is currently known to be 0.2 microns, so bacteria and colloids, rust, suspended matter, silt, macromolecular organic matter, etc. that are much larger than bacteria can be intercepted by the ultrafiltration membrane. Therefore, after the ultrafiltration membrane assembly has been working for a period of time, a large amount of pollutants will accumulate on the ultrafiltration membrane tube wall. If they are not cleaned in time, these pollutants will clog the micropores on the ultrafiltration membrane, causing the filtration rate of the ultrafiltration membrane assembly to decrease. Therefore, in order to ensure the long-term stable operation of the ultrafiltration membrane assembly, the ultrafiltration membrane assembly needs to be cleaned regularly;

[0072] When the ultrafiltration unit 2 filters the industrial wastewater, the control valve 32 in the cleaning unit 3 is in a normally closed state, thereby preventing the water in the outlet pipe 22 from flowing into the conduit 31 when the ultrafiltration unit 2 filters the wastewater;

[0073] When cleaning the ultrafiltration membrane assembly, the personnel first close the valves of the water inlet pipe 21 and the water outlet pipe 22 respectively, and then open the control valve 32 on the conduit 31, wherein a water pump and related water pressure boosting equipment are fixedly connected to the water storage tank 4, and the pressure added to the water by the water pressure boosting equipment will be preset according to the pressure bearing strength of the ultrafiltration membrane inside the ultrafiltration membrane assembly, so that during the cleaning process of the ultrafiltration membrane assembly, there is no need to adjust the water pressure boosting equipment; then the personnel turn on the water pump in the water storage tank 4, so that the water pump pumps the water in the water storage tank 4 into the water pressure boosting equipment, and the water in the water storage tank 4 is the water filtered by the ultrafiltration membrane assembly, thereby ensuring that the water in the water storage tank 4 will not cause pollution to the interior of the ultrafiltration membrane assembly when cleaning the ultrafiltration membrane assembly, and then the water pressure boosting equipment pressurizes the water in the water storage tank 4 and inputs it into the conduit 31, and then the pressurized water enters the ultrafiltration through the conduit 31 Backwashing is performed in the membrane assembly, and the flow direction of the backwash water is opposite to that of the filtration, that is, the backwash water enters the ultrafiltration fiber inside the ultrafiltration membrane assembly from the clear liquid side and flows through the membrane to the concentrated water side. The large flow of backwash water can wash away the pollutants on the membrane pores and the surface of the hollow fiber membrane, thereby backwashing and emptying the inside of the ultrafiltration membrane assembly to accelerate the cleaning of pollutants inside the ultrafiltration membrane assembly. The personnel perform backwashing every 30-60 minutes and maintain it for about 4-5 hours, ensuring that the time of each backwash is about 30-120 seconds. According to the pollution condition of the ultrafiltration membrane assembly, an appropriate amount of cleaning liquid can be added to the backwash water to improve the cleaning effect of the backwash water, and then the pollutants washed away are discharged through the lower discharge valve in the ultrafiltration membrane assembly, ensuring the cleanliness of the inside of the ultrafiltration membrane assembly, so that the ultrafiltration membrane assembly can maintain a good filtration efficiency to filter wastewater.

[0074] like Figure 4-5 As shown, the detection component 33 includes:

[0075] A fixing plate 331, wherein the fixing plate 331 is fixedly connected to the outer side of the conduit 31, and the fixing plate 331 is made of rubber;

[0076] Wedge blocks 332, the wedge blocks 332 are fixedly connected to two sides of the fixing plate 331;

[0077] Fixing holes 333 , which are provided on both sides of the fixing plate 331 and pass through the wedge block 332 ;

[0078] A diaphragm 335, the diaphragm 335 covers the outer side of the conduit 31, and circular holes are opened at corresponding positions of the conduit 31 and the diaphragm 335;

[0079] The detection rod 34 has a lower end fixedly connected to the frame 1 and an upper end of the detection rod 34 located above the diaphragm 335 .

[0080] Furthermore, when the backwash water flows in the conduit 31, the diaphragm 335 covers the outside of the conduit 31, and the fixing plate 331 fixes the diaphragm 335 on the surface of the conduit 31. The fixing plate 331 is made of rubber, which can ensure that the fixing plate 331 perfectly fits the curved surface of the conduit 31, so that the diaphragm 335 can be stably fixed on the circular hole of the conduit 31, thereby preventing the backwash water in the conduit 31 from leaking through the circular hole. The material of the diaphragm 335 can be rubber, silicone, etc., and the maximum bearing pressure of the diaphragm 335 is slightly less than the maximum bearing pressure capacity of the ultrafiltration membrane in the ultrafiltration membrane assembly;

[0081] If the water pressure boosting equipment runs abnormally for a long time, causing the water pressure output by the water tank 4 to be greater than the maximum pressure-bearing capacity of the ultrafiltration membrane inside the ultrafiltration membrane assembly, and at the same time, the high-pressure backwash water will flow in the conduit 31 before entering the ultrafiltration membrane assembly. Because the maximum pressure-bearing capacity of the diaphragm 335 is slightly smaller than the maximum pressure-bearing capacity of the ultrafiltration membrane in the ultrafiltration membrane assembly, the backwash water in the conduit 31 will break through the diaphragm 335, and the backwash water in the conduit 31 will be sprayed onto the detection rod 34 through the circular hole. After the detection rod 34 detects the impact of the backwash water, it can cut off the water pressure boosting equipment and the water pump circuit in the water tank 4, so that the water pressure boosting equipment and the water pump stop running.

[0082] like Figure 7-8 As shown, a guide hole 341 is provided inside the detection rod 34;

[0083] A control switch 343 is disposed above the guide hole 341 , and the control switch 343 is slidably connected to the inner wall of the detection rod 34 ;

[0084] Through holes 342 are provided on both sides of the guide hole 341 and at the bottom of the detection rod 34;

[0085] The opening diameter of the upper end of the guide hole 341 is smaller than the opening diameter of the lower end.

[0086] Furthermore, after the high-pressure backwash water in the conduit 31 breaks through the diaphragm 335, the high-pressure backwash water sprays upward and enters the interior of the detection rod 34 through the guide hole 341. At the same time, because the opening diameter of the upper end of the guide hole 341 is smaller than the opening diameter of the lower end, when the backwash water sprays upward through the guide hole 341, the diameter of the guide hole 341 gradually decreases, which can gather the sprayed backwash water. At the same time, the reduction in the opening diameter can increase the flow rate of the backwash water, so that the backwash water uses its own pressure to quickly push the control switch 343, so that the control switch 343 is triggered to open, so that the control switch 343 increases the water pressure in the water storage tank 4. The circuit of the booster device and the water pump is interrupted, which solves the problem that the existing cleaning process mainly relies on personnel to observe the water pressure gauge to know the backwash water pressure in the ultrafiltration membrane assembly. Generally, the cleaning of the ultrafiltration membrane assembly is arranged to be carried out at night. If the personnel are tired during the operation at night and fail to find the abnormal value displayed by the water pressure gauge in time, it is easy to cause high-pressure backwash water to enter the ultrafiltration membrane assembly, causing damage to the ultrafiltration membrane. The present invention automatically detects the water pressure in the conduit 31 through the diaphragm 335, and then automatically intervenes to prevent the high-pressure backwash water from entering the ultrafiltration membrane assembly, thereby protecting the ultrafiltration membrane in the ultrafiltration membrane assembly from being easily damaged by high water pressure shock;

[0087] It also solves the problem that some existing devices use pressure sensors to detect water pressure, the pressure sensors need to be waterproofed, and the pressure sensors need to be regularly checked to see if they are working properly. Compared with the diaphragm 335 of the present invention, the maintenance cost of the existing pressure sensors is relatively high.

[0088] like Figure 5-6 As shown, a groove 334 is provided on the inner side of the fixing plate 331 and between the wedge blocks 332;

[0089] The sizes of the wedge blocks 332 fixedly connected to each of the fixing plates 331 are different.

[0090] Furthermore, the thickness of the outer wall at the circular hole position of the catheter 31 is thicker than the thickness of the outer wall at other positions of the catheter 31, so that after the fixing plate 331 fixes the diaphragm 335 at the circular hole position on the catheter 31, by placing bolts in the fixing holes 333, personnel can tighten the bolts on the outer wall of the catheter 31 to fix the diaphragm 335, and at the same time, wedge blocks 332 are fixedly connected to both sides of the fixing plate 331, and wedge grooves adapted to the wedge blocks 332 are provided in the catheter 31, so that when the fixing plate 331 fixes the diaphragm 335, the wedge blocks 332 can fix the diaphragm The membrane 335 is squeezed in the wedge-shaped groove to prevent the diaphragm 336 from sliding, and the size of each wedge block 332 is different, so that the personnel need to place the fixing plate 331 at a specified position on the catheter 31 to ensure that the wedge blocks 332 on both sides of the fixing plate 331 are fully matched with the wedge-shaped groove, ensuring that the fixing plate 331 and the diaphragm 335 can fit tightly, preventing the personnel from arbitrarily placing the position of the fixing plate 331, causing a gap between the diaphragm 335 and the fixing plate 331 due to processing errors, resulting in water leakage at the circular hole of the catheter 31;

[0091] At the same time, a groove 334 is opened on the inner side of the fixing plate 331 and between the wedge blocks 332, and a protrusion adapted to the groove 334 is fixedly connected to the outer wall of the conduit 31, so that after the fixing plate 331 fixes the diaphragm 335 on the conduit 31, the groove 334 and the protrusion cooperate to increase the fit between the diaphragm 335 and the outer wall of the conduit 31, further making it difficult for the backwash water in the conduit 31 to leak out through the diaphragm 335; at the same time, the groove 334 is parallel to the arc of the fixing plate 331, so that after the groove 334 and the protrusion cooperate to clamp the diaphragm 335, the diaphragm 335 is not easy to slip.

[0092] like Figure 2 As shown, a recovery box 5 is fixedly connected to the lower part of the water storage box 4 , and a viewing window 51 is fixedly connected to the outer side of the recovery box 5 .

[0093] In this embodiment, after the water in the conduit 31 backwashes and empties the interior of the ultrafiltration membrane assembly, the water containing pollutants is discharged into the recovery box 5 through the lower discharge valve in the ultrafiltration membrane assembly for collection. Personnel can observe the sewage sediment in the recovery box 5 through the window 51, and then the personnel regularly clean the recovery box 5 according to the sedimentation of pollutants in the recovery box 5.

[0094] The specific workflow is as follows:

[0095] If the water pressure boosting device has an abnormality during long-term operation, causing the water pressure output by the water storage tank 4 to be greater than the maximum pressure-bearing capacity of the ultrafiltration membrane inside the ultrafiltration membrane assembly, and at the same time, before the high-pressure backwash water enters the ultrafiltration membrane assembly, the high-pressure backwash water will flow in the conduit 31. Because the maximum bearing pressure of the diaphragm 335 is slightly smaller than the maximum pressure-bearing capacity of the ultrafiltration membrane in the ultrafiltration membrane assembly, the backwash water in the conduit 31 will break through the diaphragm 335, so that the backwash water in the conduit 31 is sprayed onto the detection rod 34 through the circular hole. After the detection rod 34 detects the impact of the backwash water, it can cut off the water pressure boosting device and the water pump circuit in the water storage tank 4, so that the water pressure boosting device and the water pump circuit are disconnected. The pump stops running; after the high-pressure backwash water in the conduit 31 breaks through the diaphragm 335, the high-pressure backwash water sprays upward and enters the interior of the detection rod 34 through the guide hole 341. At the same time, because the opening diameter of the upper end of the guide hole 341 is smaller than the opening diameter of the lower end, when the backwash water sprays upward through the guide hole 341, the diameter of the guide hole 341 gradually decreases, which can gather the sprayed backwash water. At the same time, the reduction in the opening diameter can increase the flow rate of the backwash water, so that the backwash water uses its own pressure to quickly push the control switch 343, so that the control switch 343 is triggered to open, so that the control switch 343 interrupts the water pressure boosting device and the water pump circuit in the water tank 4.

[0096] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An ultrafiltration membrane emptying system, comprising: Rack (1); An ultrafiltration unit (2), the ultrafiltration unit (2) being fixedly connected to the frame (1), and the ultrafiltration unit (2) being used to filter industrial products; It is characterized by further comprising: A cleaning unit (3), the cleaning unit (3) being fixedly connected to the frame (1) and located on a side of the ultrafiltration unit (2); The cleaning unit (3) is used to clean the ultrafiltration unit (2); The ultrafiltration unit (2) comprises: Ultrafiltration membrane assembly, the ultrafiltration membrane assembly is an existing tubular membrane assembly; A water inlet pipe (21), the water inlet pipe (21) is fixedly connected to the frame (1), and the water inlet pipe (21) is in communication with the upper end of the ultrafiltration membrane assembly; A water outlet pipe (22), the water outlet pipe (22) is fixedly connected to the bottom of the frame (1) and is located below the water inlet pipe (21), and the water outlet pipe (22) is connected to the bottom of the ultrafiltration membrane assembly; The cleaning unit (3) comprises: A conduit (31), the conduit (31) being fixedly connected to and in communication with one end of the water outlet pipe (22); A control valve (32), the control valve (32) being fixedly connected to the conduit (31), and the control valve (32) being used to control the opening and closing of the conduit (31); A detection component (33), the detection component (33) being fixedly connected to the outside of the conduit (31), and the detection component (33) being used to detect the water pressure in the conduit (31); A water tank (4) is fixedly connected to the inner side of the frame (1), and the water tank (4) is in communication with one end of the conduit (31); The detection component (33) comprises: A fixing plate (331), the fixing plate (331) being fixedly connected to the outside of the conduit (31), and the fixing plate (331) being made of rubber; A wedge block (332), wherein the wedge block (332) is fixedly connected to two sides of the fixing plate (331); Fixing holes (333), the fixing holes (333) are opened on both sides of the fixing plate (331) and penetrate the wedge block (332); a diaphragm (335), the diaphragm (335) covering the outer side of the conduit (31), and circular holes being provided at corresponding positions of the conduit (31) and the diaphragm (335); the fixing plate (331) fixing the diaphragm (335) on the surface of the conduit (31); the maximum bearing pressure of the diaphragm (335) being slightly less than the maximum bearing pressure capacity of the ultrafiltration membrane in the ultrafiltration membrane assembly; A detection rod (34), wherein the lower end of the detection rod (34) is fixedly connected to the frame (1), and the upper end of the detection rod (34) is located above the diaphragm (335).

2. An ultrafiltration membrane emptying system according to claim 1, characterized in that: A guide hole (341) is provided inside the detection rod (34); A control switch (343) is provided above the guide hole (341), and the control switch (343) is slidably connected to the inner wall of the detection rod (34); Through holes (342) are provided on both sides of the guide hole (341) and at the bottom of the detection rod (34).

3. An ultrafiltration membrane emptying system according to claim 2, characterized in that: The opening diameter of the upper end of the guide hole (341) is smaller than the opening diameter of the lower end.

4. The ultrafiltration membrane emptying system according to claim 1, characterized in that: A groove (334) is provided on the inner side of the fixing plate (331) and between the wedge blocks (332).

5. The ultrafiltration membrane emptying system according to claim 1, characterized in that: The wedge blocks (332) fixedly connected to each of the fixing plates (331) have different sizes.

6. The ultrafiltration membrane emptying system according to claim 1, characterized in that: A recovery box (5) is fixedly connected below the water storage box (4), and a viewing window (51) is fixedly connected to the outer side of the recovery box (5).

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