Rural drinking water purification equipment based on ultrafiltration membrane

Abstract

This invention discloses a rural drinking water purification device based on an ultrafiltration membrane, comprising a filtration chamber containing an ultrafiltration membrane device. The ultrafiltration membrane device includes an outer frame, a membrane fiber assembly, and a top plate. An outlet and an inlet are located on the upper surface of the top plate, and the membrane fiber assembly is disposed on the bottom surface of the top plate. This invention provides a rural drinking water purification device based on an ultrafiltration membrane that can automatically clean the membrane fibers and remove impurities from the water after a period of operation. This allows the water purification equipment to operate automatically for a longer period, reducing manual maintenance time and improving purification efficiency.

Description

Technical Field

[0001] This invention relates to the field of water purification equipment technology, and in particular to a rural drinking water purification device based on an ultrafiltration membrane. Background Technology

[0002] In some remote mountain villages, due to their distance from cities, many do not have access to centralized water supply and still rely on groundwater or lake water. However, groundwater and lake water contain more impurities and pests, which can easily affect the health of those who drink it.

[0003] For example, Chinese patent CN106268331A describes installing an ultrafiltration membrane inside a water purifier. When water is supplied, the membrane automatically filters and purifies the water, removing impurities and pests and improving the safety of drinking water. However, the filter cartridges in these water purifiers need to be manually removed and cleaned periodically. In rural areas, where the initial water quality is worse, the interval between filter cleanings is even shorter, requiring someone to be on duty to clean or replace the filter cartridges regularly. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a rural drinking water purification device based on an ultrafiltration membrane.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a rural drinking water purification device based on an ultrafiltration membrane, comprising a filtration chamber, an ultrafiltration membrane device disposed within the filtration chamber, the ultrafiltration membrane device comprising an outer frame, a membrane fiber assembly, and a top plate, an outlet and a return outlet being disposed on the upper surface of the top plate, the membrane fiber assembly being disposed on the bottom surface of the top plate, and the membrane fibers within the membrane fiber assembly being connected to the outlet via internal pipes, the outlet leading to the outside of the device; and several flushing ports being provided on the bottom surface of the top plate, the flushing ports corresponding to the membrane fiber assembly. At the gaps between the membrane fibers, the flushing port is connected to the return water port through an internal pipe. The filter chamber is equipped with an inlet that can supply water with a certain pressure to the filter chamber. One end of the water pump is located at the bottom of the filter chamber, and a filtration device is installed in front of the water pump. The other end of the water pump is connected to the return water port inside the filter chamber through a pipe. A sliding plate is also installed on the top plate to control the opening and closing of the outlet and return water port. When the outlet is open, the return water port and the water pump are closed; when the outlet is closed, the return water port and the water pump are open.

[0006] Its beneficial effect is that after the purification equipment has been running for a period of time, the equipment can automatically stop the water filtration operation, while simultaneously rinsing the membrane fiber assembly and circulating and filtering the residual water in the equipment to remove impurities and pests from the residual water.

[0007] In the above scheme, preferably, a horizontal plate is provided in the filter chamber, a sliding groove is provided on the horizontal plate, a magnetic block is guided and slidably arranged in the sliding groove, one end of a pull rope is provided on the rear end of the magnetic block, the other end is provided on a winding reel for collecting the pull rope, and a first elastic element for resetting the magnetic block is sleeved on the pull rope, and the magnetic block slides on the sliding groove past the position in front of the sliding plate.

[0008] In the above-mentioned scheme, preferably, a sliding cavity is formed on the cross-section of the water outlet and the water return outlet. A sliding plate is guided and slidably disposed in the sliding cavity. A through hole is formed on the sliding plate. One end of an elastic pull rope is connected to the rear end of the sliding plate, and the other end is disposed at the rear end of the sliding cavity. Under the action of the elastic pull rope, the through hole is located in the water outlet, while the water return outlet is blocked. A magnetic suction plate is provided at the front end of the sliding plate. When the magnetic suction block passes by, it can attract the magnetic suction plate outward, thereby the sliding plate closes the water outlet and opens the water return outlet.

[0009] Its beneficial effect is that when rinsing the membrane fiber assembly, the vibration mode is automatically activated, which gradually increases the vibration amplitude of the membrane fiber assembly from slow to fast, so that the deposits on the membrane fiber assembly can be removed more quickly.

[0010] In the above scheme, preferably, a vibrating plate is provided inside the outer frame, and a sliding rheostat is provided inside the horizontal plate. The sliding block on the sliding rheostat is magnetically connected to the magnetic block and moves together with the magnetic block. The sliding rheostat is connected to the circuit of the vibrating plate. When the magnetic block moves towards the winding reel, the resistance of the sliding rheostat in the circuit decreases, and the vibration amplitude of the vibrating plate increases.

[0011] In the above scheme, preferably, the outer frame has several permeable grooves on its side, and a sealing plate is slidably arranged above the permeable grooves. The sealing plate can block the permeable grooves by sliding upward.

[0012] In the above scheme, preferably, a U-shaped sliding cavity is provided on the outer frame, and a U-shaped magnetic block is slidably arranged in the U-shaped sliding cavity. When the magnetic block passes above the outer frame, it can attract the U-shaped magnetic block upward. The U-shaped magnetic block is connected to the sealing plate by a rope. At the same time, each sealing plate in the vertical direction is connected to each other by a rope. The U-shaped magnetic block slides upward, and the sealing plate simultaneously seals the permeable channel.

[0013] Its beneficial effect is that it can automatically seal the sides of the outer frame during rinsing, so that the water can only flow out from the bottom of the outer frame, thereby allowing the rinsing water to flow through the entire membrane fiber. At the same time, the rinsing water quickly enters the water pump and enters the filter screen, further reducing impurities in the water in the filter chamber.

[0014] In the above scheme, preferably, the filtration device includes a rotating frame, a rotating disk, a collection frame, and a filter screen. The rotating frame is provided with a filtration station, a feeding station, and a discharging station. The feeding station is provided with a guide channel, and the filter screen is guided and slidably disposed in the guide channel. The left and right ends of the filtration station are connected to the water pump pipes. The rotating disk is rotatably disposed within the rotating frame, and four opening slots are evenly opened on the rotating disk. Rotating the rotating disk one station can move the filter screen from the feeding station to the filtration station, and move the filter screen in the filtration station to the discharging station, where it automatically falls into the collection frame.

[0015] The beneficial effects of the present invention are as follows: The present invention provides a rural drinking water purification device based on ultrafiltration membrane, which can automatically clean the membrane fibers after the device has been running for a period of time, and at the same time clean impurities in the water inside the device, so that the water purification device can run automatically for a longer period of time, reduce the time for manual maintenance, and improve the purification efficiency of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention.

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] Figure 3 This is a cross-sectional view of the outer frame of the present invention.

[0019] Figure 4 This is a cross-sectional view of the filtering device of the present invention.

[0020] Figure 5 This is a schematic diagram of the cooperation between the horizontal plate and the outer frame of the present invention.

[0021] Figure 6 This is a schematic diagram of the present invention. Figure 3 Enlarged view of a portion of point A in the middle.

[0022] Figure 7 This is a schematic diagram of the present invention. Figure 3 Enlarged view of section B in the middle. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1-7A rural drinking water purification device based on ultrafiltration membrane includes a filter chamber 1, an ultrafiltration membrane device 2, and a filter unit 3. The ultrafiltration membrane device 2 includes an outer frame 21, a membrane fiber assembly 22, and a top plate 23. The top plate 23 is fixed to the upper end of the outer frame 21 by bolts. The outer frame 21 is fixed to the inner wall of the filter chamber 1 by bolts. The membrane fiber assembly 22 consists of several hollow membrane fibers, all of which are disposed on the bottom surface of the top plate 23. An outlet 231 and a return outlet 232 are arranged side by side on the upper surface of the top plate 23. All membrane fibers are connected to the outlet 231 through internal channels. The outlet 231 is connected to the outlet on the filter chamber 1 to provide filtered clean water. The bottom surface of the top plate 23 also... A plurality of flushing ports 233 are provided, which are distributed around the membrane fiber connection and are connected to the return water port 232 through an internal channel. When water is injected into the return water port 232, water can be sprayed downward from the flushing ports 233 to flush the periphery of the membrane fiber. A sliding cavity 2311 is provided on the cross-section of the outlet 231 and the return water port 232. A sliding plate 24 is slidably arranged in the sliding cavity 2311, and one end of an elastic pull rope 241 is connected to the rear end of the sliding plate 24, while the other end is located at the rear end of the sliding cavity 2311. A magnetic suction plate 234 is provided at the front end of the sliding plate 24. The width of the magnetic suction plate 234 is greater than the width of the sliding cavity 2311 and the same as the width of the outer frame 21.

[0024] In the initial state, under the action of the elastic pull rope 241, the rear end of the magnetic suction plate 234 touches the opening of the sliding cavity 2311. At the same time, a through hole 242 is opened on the sliding plate 24. At this time, the through hole 242 is located inside the water outlet 231, so that the water outlet 231 is in a smooth state, while the return water outlet 232 is laterally cut off by the sliding plate 24 and is in a blocked state.

[0025] The filter chamber 1 is provided with an inlet 11, which can supply water with a certain pressure to the filter chamber 1. Therefore, when the inlet 11 supplies water to the filter chamber 1, the water pressure in the filter chamber 1 increases. The water inside passes through the outer wall of the membrane fiber assembly 22 and enters the hollow cavity of the membrane fiber, and then flows out from the outlet 231, isolating impurities and pests on the outer wall of the membrane fiber.

[0026] A horizontal plate 12 is provided in the filter chamber 1. A sliding groove 121 is provided on the horizontal plate 12. A magnetic block 122 is slidably arranged on the sliding groove 121. The sliding groove 121 is parallel to the magnetic plate 234 on the sliding plate 24. One end of a pull rope 123 is provided on the rear end of the magnetic block 122. The other end is provided on a winding reel 124 for collecting the pull rope 123. The winding reel 124 is controlled by a motor to rotate. A first elastic element 125 is sleeved on the pull rope 123. The two ends of the first elastic element 125 respectively abut against the magnetic block 122 and the rear end of the sliding groove 121.

[0027] When the motor starts rotating, it drives the reel 124 to rotate, thereby winding the pull rope 123 onto the reel 124. This pulls the magnetic block 122 towards the reel 124. The width of the magnetic plate 234 is the same as the width of the outer frame 21. Therefore, after the magnetic block 122 moves into the area of ​​the outer frame 21, it is positioned in front of the magnetic plate 234, thus magnetically attracting the magnetic plate 234. Because the bottom of the sliding plate 24 is equipped with a limit device, the sliding plate 24 slides outward under the action of magnetic attraction. 4. It does not contact the magnetic block 122, thus not affecting the sliding of the magnetic block 122 on the sliding groove 121. At the same time, the through hole 242 moves out to the outside of the outlet 231. The horizontal plate that previously blocked the return water port 232 blocks the outlet 231, while the return water port 232 is in a free-flowing state. Therefore, after the magnetic block 122 moves into the area of ​​the outer frame 21, the outlet 231 is automatically closed, that is, the membrane fiber group 22 no longer performs filtration. The return water port 232 is opened, and the water flow can be sprayed downward from the flushing port 233 to flush the periphery of the membrane fiber.

[0028] The outer frame 21 is provided with several vibrating plates 25. The vibrating plates 25 are connected to the power supply and are controlled by a control device to start and stop. After starting, the vibrating plates 25 can vibrate. The vibrating plates 25 are located in the gaps between the membrane fibers in the membrane fiber assembly 22. Therefore, when the vibrating plates 25 vibrate, they can drive the surrounding water flow and membrane fibers to vibrate, thereby shaking off the attached substances on the membrane fibers. A sliding rheostat 13 is provided in the horizontal plate 12. The sliding block on the sliding rheostat 13 is magnetically connected to the magnetic block 122 and moves with the magnetic block 122. The sliding rheostat 13 is connected to the circuit of the vibrating plate 25. When the magnetic block 122 moves towards the winding reel 124, the resistance of the sliding rheostat 13 in the circuit decreases, and the vibration amplitude of the vibrating plate 25 increases.

[0029] When the motor starts, it drives the winding reel 124 to rotate, which simultaneously energizes the vibrating plate 25. At this time, the resistance of the sliding rheostat 13 connected to the circuit of the vibrating plate 25 is at its maximum value, so the vibration amplitude of the vibrating plate 25 is at its minimum, and it begins to vibrate at a small amplitude, causing the surrounding objects to vibrate along with it. As the magnetic block 122 moves, the resistance of the sliding rheostat 13 connected to the circuit of the vibrating plate 25 decreases, thereby slowly increasing the vibration amplitude. This allows the surrounding membrane fibers to adapt to the vibration amplitude of the vibrating plate 25, thus protecting the membrane fibers and preventing them from breaking due to sudden rapid vibration.

[0030] The outer frame 21 has several permeable grooves 211 on its side, and a sealing plate 214 is slidably arranged above the permeable grooves 211. The outer frame 21 is also provided with a U-shaped sliding cavity 212, and a U-shaped magnetic block 213 is slidably arranged in the U-shaped sliding cavity 212. When the magnetic block 122 passes above the outer frame 21, it can attract the U-shaped magnetic block 213 upward. The U-shaped magnetic block 213 is connected to the sealing plate 214 by a rope, and each sealing plate 214 in the vertical direction is connected to each other by a rope.

[0031] In the initial state, the sealing plate 214 is located inside the outer frame 21 under its own weight, thus keeping the permeable channel 211 unobstructed. Therefore, the water in the filter chamber 1 can flow freely. When the magnetic block 122 passes above the outer frame 21, the outlet 231 automatically closes, meaning the membrane fiber assembly 22 no longer performs filtration. Therefore, the adhesion of the membrane fibers to the deposits disappears, and the return outlet 232 opens, with water spraying downwards from the flushing port 233 to wash the periphery of the membrane fibers. At the same time, the circular magnetic block 213 slides upwards, and the sealing plate 214 simultaneously seals the permeable channel 211, so that the flushed water can only flow downwards, allowing the water to completely wash the periphery of the membrane fibers. At the same time, the vibrating plate 25 is vibrating, further assisting in cleaning the deposits on the periphery of the membrane fibers, causing the deposits to be flushed downwards from below the outer frame 21 with the water flow.

[0032] A water pump 13 is installed at the bottom of the filter chamber 1, and the filter device 3 is installed on the water pump 13's water pump pipe. One end of the water pump 13's pipe is connected to the bottom of the filter chamber 1, and the other end enters the filter chamber 1 and is connected to the return water port 232.

[0033] When the motor starts, it drives the winding reel 124 to rotate, which in turn drives the water pump 13 to rotate. This causes the water at the bottom of the filter chamber 1 to pass through the filter device 3 and then be sprayed out from the return water port 232, so that the water flow inside the filter chamber 1 begins to circulate. After all the impurities in the filter chamber 1 are left on the filter device 3, the water flow is sprayed downward from the flushing port 233 to rinse the periphery of the membrane fibers, thereby cleaning the impurities and pests remaining inside the filter chamber 1 after filtration.

[0034] The filtration device 3 includes a rotating frame 31, a rotating disk 32, a collection frame 33, and a filter screen 34. The rotating frame 31 is equipped with a filtration station 311, a feeding station 312, and a discharge station 313. The rotating disk 32 is rotatably mounted within the rotating frame 31, and has four evenly distributed openings 321. These openings 321 correspond to the filtration station 311, the feeding station 312, and the discharge station 313, respectively. 2. Rotating 90 degrees can move the opening slot 321 originally located at the feeding station 312 to the filtering station 311, and the opening slot 321 at the filtering station 311 to the discharging station 313. A guide channel 314 is provided on the feeding station 312, and the filter screen 34 is guided and slidably set in the guide channel 314. The left and right ends of the filtering station 311 are connected to the water pump pipe of the water pump 13, and the collection frame 33 is located below the discharging station 313.

[0035] When the opening slot 321 is aligned with the feeding station 312, the filter screen 34 in the guide channel 314 can automatically fall into the opening slot 321. The rotating disk 32 rotates one station to transfer the new filter screen 34 into the filtration station 311, while the previously used filter screen 34 rotates to the discharge station 313 and automatically falls into the collection frame 33. The rotation of the rotating disk 32 is controlled by the control system.

[0036] Its working principle or usage method is as follows:

[0037] After the purification equipment has been running for a period of time (this time can be adjusted by the program), the control system starts the motor, causing the winding reel 124 to rotate. Simultaneously, the vibrating plate 25 is energized, and the water pump 13 also starts rotating. At this time, because the return water inlet 232 is closed, the water pump 13 is running dry, with no water flowing through. After the magnetic block 122 moves into the area of ​​the outer frame 21, it is positioned in front of the magnetic plate 234, thus holding the magnetic plate 234... Magnetic adsorption occurs, at which point the through hole 242 moves out of the outlet 231, and the horizontal plate that previously blocked the return water outlet 232 moves to the outlet 231, thereby blocking the outlet 231 and stopping the membrane fiber assembly 22 from working. The return water outlet 232 is then unobstructed, allowing the water pumped by the pump 13 to be filtered by the filter screen 34 and then sprayed downwards from the flushing port 233 to flush the periphery of the membrane fibers. At the same time, several permeable grooves 211 on the side of the outer frame 21 are automatically closed, and the vibrating plate 25 begins to vibrate.

[0038] After the water pumped by the water pump 13 is filtered by the filter screen 34, all the impurities in the water in the filter chamber 1 are left on the filter screen 34. When the magnetic block 122 moves to the end of the sliding groove 121, it presses against the pressure switch at the end, thereby controlling the motor to be de-energized, the vibrating plate 25 to be de-energized, and the water pump 13 to stop working. At this time, the magnetic block 122 returns to the initial position of the first elastic element 125, and the sliding rheostat 13 also moves to the maximum resistance value. At the same time, the magnetic block 122 moves out of the outer frame 21 area, and the magnetic plate 234 loses its magnetic attraction. Therefore, under the action of the elastic pull rope 241, it returns to the initial state, that is, the through hole 242 is located in the water outlet 231, so that the membrane fiber group 22 starts working again and blocks the return water outlet 232. At the same time, under the action of its own gravity, the sealing plate 214 slides down into the outer frame 21, thereby making the water permeable groove 211 unobstructed, and everything returns to the initial state.

[0039] At this time, all the impurities in the water in the filtration chamber 1 are collected in the filter screen 34. Then, the rotating disk 32 rotates one station, so that the new filter screen 34 enters the filtration station 311, and the used filter screen 34 automatically falls into the collection box 33.

[0040] At this point, the self-cleaning operation of the purification equipment is complete. Operators only need to clean the collection box 33 periodically and add new filters 34 to the guide channel 314 to enable the purification equipment to run automatically for a long time.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rural drinking water purification device based on an ultrafiltration membrane, characterized in that: The device includes a filter chamber (1), an ultrafiltration membrane device (2) is installed in the filter chamber (1), the ultrafiltration membrane device (2) includes an outer frame (21), a membrane fiber assembly (22) and a top plate (23), an outlet (231) and a return water outlet (232) are provided on the upper surface of the top plate (23), the membrane fiber assembly (22) is installed on the bottom surface of the top plate (23), and the membrane fibers in the membrane fiber assembly (22) are connected to the outlet (231) through an internal pipe. The outlet (231) leads to the outside of the device. Several flushing ports (233) are also provided on the bottom surface of the top plate (23). The flushing ports (233) correspond to the gap positions of the membrane fibers in the membrane fiber assembly (22). The flushing ports (233) are connected to the return water outlet (232) through an internal pipe. The filter chamber (1) is provided with an inlet (11), which can supply water with a certain pressure to the filter chamber (1). The bottom of the filter chamber (1) is provided with one end of a water pump (13), and a filter device (3) is provided in front of the water pump (13). The other end of the water pump (13) is connected to the return water port (232) in the filter chamber (1) through a pipe. The top plate (23) is also equipped with a sliding plate (24) that can control the opening or closing of the water outlet (231) and the water return port (232). When the water outlet (231) is open, the water return port (232) and the water pump (13) are closed. When the water outlet (231) is closed, the water return port (232) and the water pump (13) are open. A horizontal plate (12) is provided in the filter chamber (1). A sliding groove (121) is provided on the horizontal plate (12). A magnetic block (122) is slidably provided in the sliding groove (121). One end of a pull rope (123) is provided on the rear end of the magnetic block (122). The other end of the pull rope (123) is provided on a winding reel (124) for collecting the pull rope (123). A first elastic element (125) for resetting the magnetic block (122) is sleeved on the pull rope (123). The magnetic block (122) slides on the sliding groove (121) past the position in front of the sliding plate (24). The outlet (231) and return outlet (232) are provided with sliding cavities (2311) on their cross-sections. A sliding plate (24) is guided and slidably disposed in the sliding cavity (2311). A through hole (242) is provided on the sliding plate (24). One end of an elastic pull rope (241) is connected to the rear end of the sliding plate (24). The other end of the elastic pull rope (241) is disposed at the rear end of the sliding cavity (2311). Under the action of the elastic pull rope (241), the through hole (242) is located in the outlet (231) and the return outlet (232) is blocked. A magnetic suction plate is provided at the front end of the sliding plate (24). When the magnetic block (122) passes by, it can attract the magnetic suction plate outward, so that the sliding plate (24) closes the outlet (231) and opens the return outlet (232). A vibrating plate (25) is provided inside the outer frame (21), and a sliding rheostat is provided inside the horizontal plate (12). The sliding block on the sliding rheostat is magnetically connected to the magnetic block (122) and moves together with the magnetic block (122). The sliding rheostat is connected to the circuit of the vibrating plate (25). The magnetic block (122) moves towards the winding reel (124). The resistance of the sliding rheostat connected to the circuit decreases, and the vibration amplitude of the vibrating plate (25) increases.

2. The rural drinking water purification equipment based on ultrafiltration membrane according to claim 1, characterized in that: The outer frame (21) has several permeable grooves (211) on its side, and a sealing plate (214) is slidably provided above the permeable grooves (211). The sealing plate (214) can slide upward to seal the permeable grooves (211).

3. The rural drinking water purification equipment based on ultrafiltration membrane according to claim 2, characterized in that: A spiral sliding cavity (212) is provided on the outer frame (21), and a spiral magnetic block (213) is slidably arranged in the spiral sliding cavity (212). When the magnetic block (122) passes above the outer frame (21), it can attract the spiral magnetic block (213) upward. The spiral magnetic block (213) is connected to the sealing plate (214) by a rope. At the same time, each sealing plate (214) in the vertical direction is connected by a rope. The spiral magnetic block (213) slides upward, and the sealing plate (214) simultaneously seals the permeable trough (211).

4. The rural drinking water purification equipment based on ultrafiltration membrane according to claim 1, characterized in that: The filtration device (3) includes a rotating frame (31), a rotating disk (32), a collection frame (33), and a filter screen (34). The rotating frame (31) is provided with a filtration station (311), a feeding station (312), and a discharging station (313). The feeding station (312) is provided with a guide channel (314). The filter screen (34) is guided and slidably disposed in the guide channel (314). The left and right ends of the filtration station (311) are connected to the water pump (13) pumping pipe. The rotating disk (32) is rotatably provided with the rotating frame (31). The rotating disk (32) is evenly provided with four opening slots (321). When the rotating disk (32) rotates one station, it can move the filter screen (34) of the feeding station (312) into the filtration station (311) and move the filter screen (34) in the filtration station (311) into the discharging station (313), where it automatically falls into the collection frame (33).

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