River water filtering and purifying assembly, purifying device and purifying method

Abstract

The invention discloses a river water filtration and purification assembly, purification device and purification method, the river water filtration and purification assembly comprises a support frame and a plurality of fiber filters, the support frame comprises a fixed transverse pipe and a movable transverse pipe, and the movable transverse pipe is located on the lower side of the fixed transverse pipe and can move up and down relative to the fixed transverse pipe; the fiber filter comprises an upper pipe body, a lower pipe body and hollow filter fibers, the upper pipe body is fixed and communicated with the fixed transverse pipe, the lower pipe body is fixed and communicated with the movable transverse pipe, and the two ends of the hollow filter fibers are connected with the upper pipe body and the lower pipe body respectively; a water pumping opening is formed in the fixed transverse pipe and connected with a water pumping pipe; the fixed transverse pipe and the movable transverse pipe are connected through a piston pipe set, the piston pipe set comprises an outer pipe fitting and an inner pipe fitting, and the outer pipe fitting and the inner pipe fitting are sleeved to form a sealed sliding structure. The first end of the water supplementing pipe is connected with the movable transverse pipe through a guide pipe, and the guide pipe is provided with an electric control valve; the second end of the water replenishing pipe communicates with the clean water tank. According to the invention, self-cleaning of the hollow filter fibers can be realized, and the water purification efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and more specifically, to a filtering and purifying component, a river water purification device having the filtering and purifying component, and a purification method using the river water purification device. Background Art

[0002] River water is used as a water source. During the treatment process, it is usually purified by membrane filtration. The membrane filtration component can generally choose MBR hollow fiber curtain membrane, and its filtration parameters can basically meet the requirements of river water purification. However, during the use of MBR hollow fiber curtain membrane, it is easy to cause blockage problems, especially on the outer surface of the hollow fiber, which is in direct contact with external suspended matter and bacterial colonies. It is easy to accumulate on the outer surface of the hollow fiber, causing blockage and affecting subsequent normal water purification. After using it for a period of time, the membrane filtration component needs to be cleaned frequently to remove the aggregates attached to the outside of the hollow fiber to maintain the water purification efficiency of the membrane filtration component.

[0003] In order to facilitate the cleaning of the MBR hollow fiber curtain membrane, reduce the impact of blockage, and avoid waiting caused by shutdown cleaning. The Chinese invention patent with publication number CN118929902A discloses a membrane filtration water purification module and a river water integrated purification device, including a membrane frame and a plurality of membrane components. The membrane frame includes an upper frame, a lower frame and a movable frame. The upper frame, the movable frame and the lower frame are arranged from top to bottom. The upper frame and the lower frame are relatively fixed, and the movable frame can be adjusted up and down relative to the lower frame; shaft bodies are fixed on both sides of the movable frame, and the two shaft bodies are horizontally coaxially arranged. The axis of the shaft body is located in the middle of the movable frame. The lower frame is fixed with two connecting seats, and the connecting seat is provided with a linkage groove running up and down. The shaft body extends into the linkage groove and can slide up and down in the linkage groove, and can rotate axially in the linkage groove. This solution can use river water as raw water, perform solid-liquid separation through membrane components, and then use excessive aeration to purify the water. It can effectively remove suspended matter, bacterial colonies and other impurities in the water to obtain relatively clean water, thereby achieving efficient purification and utilization of river water.

[0004] In the above technical solution, it is disclosed that an aeration device is used as a power to drive the fiber filter membrane to move, which can disturb the fiber filter membrane, clear the fiber filter membrane surface, and clean the fiber filter membrane, thus solving the problem of easy blockage of fiber filtration to a certain extent. This method proposes a new technical solution to solve the above problem. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a river water filtering and purification component, a purification device and a purification method.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A filtering and purifying component comprises a support frame and a plurality of fiber filters, wherein the support frame comprises a fixed transverse tube and a movable transverse tube, wherein the movable transverse tube is located at the lower side of the fixed transverse tube and can move up and down relative to the fixed transverse tube; the fiber filter comprises an upper tube body, a lower tube body and hollow filter fibers, wherein the upper tube body is fixed and connected to the fixed transverse tube, the lower tube body is fixed and connected to the movable transverse tube, and the two ends of the hollow filter fibers are respectively connected to the upper tube body and the lower tube body; the fixed transverse tube is provided with a water pumping port, and the water pumping port is connected to a water pumping pipe;

[0008] The fixed cross tube and the movable cross tube are connected by a piston tube assembly, which includes an outer tube and an inner tube. The upper end of the outer tube is fixed and connected to the fixed cross tube, and the lower end of the inner tube is fixed to the movable cross tube. The outer tube and the inner tube are mutually sheathed to form a sealed sliding connection structure, and the inner cavities of the outer tube and the inner tube are mutually sealed and separated.

[0009] It also includes a water supply pipe, the first end of which is connected to the movable cross pipe through a conduit, and the second end of which is connected to a clean water tank; the conduit is provided with an electric control valve, which can switch the conduit on and off.

[0010] The present invention is further configured such that the upper end of the inner pipe is closed and extends into the outer pipe, a sliding sealing ring is installed on the outer periphery of the inner pipe; a piston is installed on the upper end of the inner pipe, and the piston is connected to the inner periphery of the outer pipe.

[0011] The present invention is further configured such that a flow sensor is installed in the water supply pipe.

[0012] The present invention is further configured such that the water supply pipe is installed with one-way valve 1 and one-way valve 2, and the flow sensor is located between the one-way valve 1 and the one-way valve 2; both the one-way valve 1 and the one-way valve 2 can conduct unidirectionally from the second end to the first end.

[0013] The present invention is further configured such that the support frame also includes an air guide cross tube, which is located directly below the movable cross tube and is used to support the movable cross tube; the movable cross tube is provided with a through hole that passes through from top to bottom, the lower end of the through hole is connected to the aeration pipe, a lifting block is connected in the through hole for sliding up and down, the lifting block is provided with an air guide groove, the air guide groove passes through the lower side and the outer peripheral surface of the lifting block; during the aeration process of the aeration pipe, the lifting block can press upward to lift the movable cross tube.

[0014] The present invention is further configured such that the support frame further comprises an upper frame, a movable frame and a lower frame arranged from top to bottom, the upper frame and the lower frame are fixed to each other, and the movable frame can move up and down between the upper frame and the lower frame;

[0015] The present invention is further configured such that the fixed cross tube is installed on the upper frame, the movable cross tube is installed on the movable frame, and the air guide cross tube is installed on the lower frame; the lower frame is fixedly installed with a slide rail member, the movable frame is fixedly installed with a slider member, and the slider member can slide up and down and is connected to the slide rail member.

[0016] The present invention also provides a river water purification device, comprising a raw water tank, a clean water tank, a pump device, a fan and the filtering and purification component as described above, wherein the filtering and purification component is located in the raw water tank, the input end of the pump device is connected to the water suction port of the fixed horizontal pipe through a pumping pipe, and the output end of the pump device pumps produced water to the clean water tank through a drain pipe; the drain pipe is installed with a flow meter; the fan is connected to an aeration pipe, the aeration pipe extends into the raw water tank, and is located at the lower side of the fiber filter for aeration; the first end and the second end of the water supply pipe are respectively located in the raw water tank and the clean water tank.

[0017] The present invention also provides a river water purification method, using the river water purification device as described above, the river water purification method includes a preparation step, a self-cleaning step;

[0018] The preparation steps are:

[0019] Loading raw water to be purified in a raw water tank;

[0020] With a new fiber filter, the pump device operates at a preset power P to extract the produced water in the fiber filter through the suction pipe;

[0021] Record the pumping flow rate of the pump device as the standard flow rate Q;

[0022] The self-cleaning steps are:

[0023] The pump device operates at a preset power P to extract the produced water in the fiber filter through the water extraction pipe 51;

[0024] The pumping flow of the pump device is the actual flow Q1. The fiber filter is gradually blocked and the actual flow Q1 will gradually decrease.

[0025] When the actual flow rate Q1≥0.8Q, the electric control valve maintains a closed state; when the actual flow rate Q1<0.8Q, the electric control valve switches from a closed state to an open state, and the duration is t.

[0026] The present invention is further configured such that, in the self-cleaning step, the water replenishment flow rate in the water replenishment pipe is Q2, and the water production flow rate of the fiber filter 34 is Q3, and Q3=Q1-Q2.

[0027] In summary, the present invention has the following beneficial effects:

[0028] By setting the movable transverse tube as a structure that can move up and down, and connecting the fixed transverse tube and the movable transverse tube through a piston tube group that can be retracted by a piston, under the suction effect of the negative pressure in the fixed transverse tube, negative pressure is formed in the tube cavity of the outer tube, which can suck the inner tube upward, so that the inner tube and the lower tube body of the fiber filter can move upward, and the hollow filter fiber can move between the tensioned and bent states. During the movement of the hollow filter fiber, internal vibration will be generated, and adjacent hollow filter fibers can also produce mutual friction contact, thereby allowing impurities attached to the surface of the hollow filter fiber to fall off, which can play a role in clearing the hollow filter fiber.

[0029] By intermittently switching the electric control valve on and off, when the electric control valve is turned on, the movable cross pipe can be connected to the clean water tank through the conduit and the water supply pipe. The water in the clean water tank will quickly pass through the hollow filter fiber and flow from bottom to top along the inner cavity of the hollow filter fiber, thereby shearing the impurities attached to the inner surface of the hollow filter fiber, and then the blockages attached to the hollow filter fiber can be quickly and effectively sheared, and the blockages can be separated and discharged upward along the hollow filter fiber to avoid the accumulation of blockages.

[0030] When the surface of the hollow filter fiber is blocked, the flux on the surface of the hollow filter fiber becomes smaller, and more force of the negative pressure generated by the pump device will be applied to the inner cavity of the outer pipe, making it easier for the inner pipe to be sucked upward, making it easier for the inner pipe, the movable cross tube, and the lower tube body of the fiber filter to rise and fall.

[0031] The movable cross pipe is connected to the water supply pipe through the conduit, and the water supply pipe can be connected to the clean water tank. By controlling the electric control valve on the conduit, the on-off of the conduit can be controlled. When the electric control valve controls the conduit to open, the clean water tank is connected to the inner cavity of the hollow filter fiber, which will destroy the negative pressure state; under the action of gravity, the inner pipe, the movable cross pipe, the lower pipe body of the fiber filter and other components will fall, and the hollow filter fiber will be straightened from the bent state, which can achieve the disturbance of the hollow filter fiber and remove some obstructions attached to the surface. By adjusting the on-off of the electric control valve, the up and down movement of the inner pipe can be realized.

[0032] By detecting the difference between the actual flow rate Q1 of the pump device and the standard flow rate Q under the same preset power P, it is possible to judge whether the fiber filter is blocked and the flux change of the fiber filter. When the actual flow rate Q1 of the pump device is less than a certain range, the lifting and lowering of the piston tube group and the fiber filter can be adjusted through the control of the electric control valve, and then self-cleaning can be achieved while continuously running in the raw water pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of a filtering and purification component in Example 1;

[0034] Figure 2 It is a schematic diagram of the structure of the fiber filter in Example 1;

[0035] Figure 3 This is a schematic cross-sectional view of a filtering and purification component in Embodiment 1, in which the fiber filter is not shown;

[0036] Figure 4 It is a structural schematic diagram of the piston tube assembly in Example 1;

[0037] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0038] Figure 6 This is a schematic diagram of the connection structure of a water supply pipe of a filtering and purifying component in Example 1, and the fiber filter is not shown;

[0039] Figure 7 This is a schematic structural diagram of a river water purification device in Example 2;

[0040] Figure 8 It is a cross-sectional view of a river water purification device in Example 2;

[0041] Fig. 9 It is a schematic diagram of the structure of the pump device in the second embodiment.

[0042] Reference numerals: raw water tank 1; water inlet and outlet pipes 11; clean water tank 2; filtration and purification assembly 3; support frame 30; upper frame 31; fixed transverse pipe 311; water inlet 312; lower frame 32; slide rail 321; slider 322; air guide transverse pipe 323; through hole 324; lifting block 325; air guide groove 326; movable frame 33; movable transverse pipe 331; fiber filter 34; upper tube body 341; lower tube body 34 2; hollow filter fiber 343; piston tube assembly 35; outer pipe 351; inner pipe 352; piston member 353; sliding seal 354; water supply pipe 4; first end 41; second end 42; one-way valve 1 43; one-way valve 2 44; flow sensor 45; conduit 46; two-way connector 461; electric control valve 462; pump device 5; water suction pipe 51; drainage pipe 52; flow meter 53; fan 6; aeration pipe 61. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] This embodiment discloses a filtering and purifying component 3, referring to Figure 1-Figure 6 As shown, it includes a support frame 30 and a plurality of fiber filters 34 . The fiber filters 34 are curtain-type MBR membranes, which play a role in filtering raw water; and the support frame 30 plays a role in supporting the fiber filters 34 .

[0045] Reference Figure 1 , Figure 3 As shown, the support frame 30 also includes an upper frame 31, a movable frame 33 and a lower frame 32 arranged from top to bottom, and the upper frame 31 and the lower frame 32 are fixed to each other to form a rectangular parallelepiped frame structure. The movable frame 33 is located on the upper side of the upper frame 31 and can move up and down between the upper frame 31 and the lower frame 32.

[0046] The support frame 30 further includes a fixed transverse tube 311 and a movable transverse tube 331, both of which are hollow pipes. The fixed transverse tube 311 is fixedly mounted on the upper frame 31, and the movable transverse tube 331 is fixedly mounted on the movable frame 33, and the movable transverse tube 331 is located at the lower side of the fixed transverse tube 311. The movable transverse tube 331 can move with the movable frame 33 and can move up and down relative to the fixed transverse tube 311.

[0047] The lower frame 32 is located at the lower side of the movable frame 33, and can play a role in supporting the movable frame 33. A slide rail 321 is fixedly installed on the lower frame 32, and a slider 322 is fixedly installed on the movable frame 33. The slide rail 321 is provided with a slide groove running up and down, and the slider 322 is embedded in the slide groove of the slide rail 321, which can form an up and down guide and limit the sliding stroke of the slider 322.

[0048] Reference Figure 1 , Figure 2 As shown, the fiber filter 34 includes an upper tube body 341, a lower tube body 342 and a hollow filter fiber 343. The upper tube body 341 is fixed to and connected to the fixed transverse tube 311, the lower tube body 342 is fixed to and connected to the movable transverse tube 331, and the two ends of the hollow filter fiber 343 are respectively connected to the upper tube body 341 and the lower tube body 342.

[0049] The upper side of the fixed transverse pipe 311 is provided with a water pumping port 312, which is connected to the water pumping pipe 51. During filtration and purification, clean water passes through the surface of the hollow filter fiber 343 and enters the hollow filter fiber 343. The clean water inside the hollow filter fiber 343 is sucked out by the pump device 5 to achieve water purification.

[0050] Reference Figure 3 , Figure 4As shown, the fixed transverse tube 311 and the movable transverse tube 331 are connected by a piston tube group 35, and the piston tube group 35 can form an upper interactive adjustment. The piston tube group 35 includes an outer tube 351 and an inner tube 352, wherein the upper end of the outer tube 351 is fixedly connected to the fixed transverse tube 311, and the inner cavity of the outer tube 351 is connected to the inner cavity of the fixed transverse tube 311. The lower end of the inner tube 352 is fixed to the movable transverse tube 331. The outer tube 351 and the inner tube 352 are mutually sleeved, and a sealed sliding connection structure is formed at the sleeve connection. Moreover, the inner cavities of the outer tube 351 and the inner tube 352 are sealed and separated from each other.

[0051] Specifically, the upper end of the inner tube 352 is closed, and a piston 353 is installed on the upper end of the inner tube 352. The upper end of the inner tube 352 and the piston 353 extend into the outer tube 351, and a sliding seal 354 is installed on the outer periphery of the inner tube 352. The piston 353 is connected to the inner periphery of the outer tube 351 by a piston, and the multiple seals 354 can form a multiple sliding seal structure to improve the stability of the piston seal structure.

[0052] The filtering and purifying assembly 3 in this embodiment further includes a water supply pipe 4, a first end 41 of the water supply pipe 4 is connected to the movable transverse pipe 331 through a conduit 46, and a second end 42 of the water supply pipe 4 is connected to the clean water tank 2. The conduit 46 is provided with an electric control valve 462, through which the conduit 46 can be regulated to be on and off.

[0053] Specifically, one end of the conduit 46 is connected to the movable cross pipe 331 through a two-way joint 461 ; the electric control valve 462 is a two-way solenoid valve, connecting the other end of the conduit 46 to the first end 41 of the water supply pipe 4 .

[0054] During the water purification process, the pump device 5 can generate negative pressure suction in the fixed horizontal pipe 311 through the water pumping pipe 51. Under the suction effect of the negative pressure, the water in the raw water tank 1 will pass through the hollow filter fibers 343 to achieve raw water filtration and purification;

[0055] In addition, under the suction effect of the negative pressure in the fixed transverse tube 311, negative pressure is formed in the tube cavity of the outer tube 351, which can suck the inner tube 352 upward, so that the inner tube 352 and the lower tube 342 of the fiber filter 34 can also move upward synchronously, so that the lower tube 342 can move upward relative to the upper tube 341, so that the hollow filter fiber 343 can produce tension and bending changes. When the hollow filter fiber 343 is in tension and bending operation, the hollow filter fiber 343 vibrates, and adjacent hollow filter fibers 343 can also produce mutual friction contact, so that impurities attached to the surface of the hollow filter fiber 343 can fall off, which can play the role of clearing the hollow filter fiber 343.

[0056] Especially when the surface of the hollow filter fiber 343 is blocked, the flux on the surface of the hollow filter fiber 343 becomes smaller, and more force of the negative pressure generated by the pump device 5 will be applied to the inner cavity of the outer tube 351, thereby making it easier for the inner tube 352 to be sucked upward, making it easier for the inner tube 352, the movable cross tube 331, and the lower tube 342 of the fiber filter 34 to rise and fall.

[0057] While the pump device 5 is performing the suction effect of negative pressure, it controls the electric control valve 462 to switch and adjust the on-off state of the conduit 46, thereby adjusting the suction pressure in the tube and controlling the lifting and lowering of components such as the internal pipe 352, the movable cross pipe 331, and the lower tube body 342 of the fiber filter 34.

[0058] When the electric control valve 462 controls the conduit 46 to be closed, the negative pressure generated by the pump device 5 in the outer pipe 351 can suck the inner pipe 352 upward, and the inner pipe 352, the movable cross tube 331, the lower tube body 342 of the fiber filter 34 and other components can move upward, and the hollow filter fiber 343 will also become curved.

[0059] When the electric control valve 462 controls the conduit 46 to open, the movable cross pipe 331 will be directly connected to the clean water tank 2, and the clean water in the clean water tank 2 can be sucked into the movable cross pipe 331 from the water supply pipe 4 and the conduit 46, and then flow upward through the lower tube body 342 and the hollow filter fiber 343, and then flow through the upper tube body 341 and the fixed cross pipe 311 to achieve circulation; after being connected with the clean water tank 2, the negative pressure state of the inner cavity of the fixed cross pipe 311 and the outer tube 351 will be destroyed, so that the negative pressure will be reduced, and the inner tube 352 cannot be sucked up any further. Under the action of gravity, the inner tube 352, the movable cross pipe 331, the lower tube body 342 of the fiber filter 34 and other components will fall, and the hollow filter fiber 343 will be straightened from the bent state, which can achieve disturbance of the hollow filter fiber 343 and remove some blockages attached to the surface. Moreover, when the electric control valve 462 controls the conduit 46 to open, a large amount of water can quickly enter the hollow filter fiber 343, and the water can quickly circulate in the hollow filter fiber 343, which can clear some of the blockages accumulated in the hollow filter fiber 343, further cleaning and clearing the hollow filter fiber 343. In this embodiment, the inner tube 352 can be lifted and lowered by adjusting the on and off of the electric control valve 462.

[0060] Reference Figure 3 , Figure 6 As shown, in the filtering and purifying assembly 3 in this embodiment, the water supply pipe 4 is installed with a flow sensor 45. The flow sensor 45 can detect the flow through the water supply pipe 4, can record the instantaneous flow, and can also record the total flow. The flow sensor 45 can feedback the flow information of the water supply pipe 4.

[0061] Furthermore, the water supply pipe 4 is installed with a one-way valve 1 43 and a one-way valve 2 44, and the flow sensor 45 is located between the one-way valve 1 43 and the one-way valve 2 44. Both the one-way valve 1 43 and the one-way valve 2 44 can conduct one-way from the second end 42 to the first end 41, and the one-way valve 1 43 and the one-way valve 2 44 can prevent the clean water from flowing back to the clean water tank 2 without affecting the circulation of water, and prevent the backflow of water from affecting the normal operation of the flow sensor 45.

[0062] Furthermore, in the filtration and purification component 3 of this embodiment, an aeration structure is also provided. Figure 3 , Figure 5 , Figure 6 As shown, the support frame 30 also includes an air guide cross pipe 323 , and the fixed cross pipe 311 is installed on the upper frame 31 and is located directly below the movable cross pipe 331 for supporting the movable cross pipe 331 .

[0063] The movable transverse pipe 331 is provided with a through hole 324 which passes through from top to bottom. The lower end of the through hole 324 is connected to the aeration pipe 61. A lifting block 325 is slidably connected to the through hole 324. The lifting block 325 is provided with an air guide groove 326 which passes through the lower side and the outer peripheral surface of the lifting block 325. The lifting block 325 is used to push the lifting block 325 upward during the aeration process of the aeration pipe 61, so that the air guide groove 326 on the outer periphery of the lifting block 325 can be exposed to the through hole 324, and the gas used for aeration is output to the outside. The lifting block 325 can press upward to lift up the movable cross tube 331, and can also lift up the movable cross tube 331, the lower tube body 342 and other components to transform the hollow filter fiber 343 into a curved structure. By controlling the aeration pressure, the remaining lifting of the movable cross tube 331 can be adjusted, thereby achieving disturbance control of the hollow filter fiber 343 and clearing the blockage of the hollow filter fiber 343.

[0064] Embodiment 2

[0065] This embodiment discloses a river water purification device, referring to Figure 7-Figure 9 As shown, it includes a raw water tank 1, a clean water tank 2, a pump device 5, a fan 6 and a filtering and purifying component 3 as in the above-mentioned embodiment 1.

[0066] The main body of the filtering and purifying component 3 is installed in the raw water tank 1 , and the first end 41 and the second end 42 of the water supply pipe 4 are located in the raw water tank 1 and the clean water tank 2 respectively.

[0067] The input end of the pump device 5 is connected to the water inlet 312 of the fixed horizontal pipe 311 through the water pumping pipe 51, and the output end of the pump device 5 pumps the produced water to the clean water tank 2 through the drainage pipe 52. When the pump device 5 is in operation, it can draw water from the water pumping pipe 51 and pump it to the drainage pipe 52. The water in the raw water tank 1 is filtered and purified by the hollow filter fiber 343, and the produced water is input into the clean water tank 2 to achieve river water purification.

[0068] A flow meter 53 is installed at the drain pipe 52. The flow meter 53 can detect the flow rate, record the instantaneous flow rate, and record the total flow rate within a certain period of time.

[0069] The fan 6 plays the role of aeration. The air outlet of the fan 6 is connected to an aeration pipe 61. The aeration pipe 61 extends into the raw water pool 1 and is located at the lower side of the fiber filter 34 for aerating the bottom of the raw water pool 1.

[0070] This embodiment also discloses a river water purification method, which adopts the river water purification device in the above-mentioned embodiment 2.

[0071] In the water purification process, river water is injected into the raw water pool 1 as raw water. The river water purification method specifically includes a preparation step and a self-cleaning step. The preparation step is to calibrate the standard flow Q; the self-cleaning step is to perform a self-cleaning effect on the fiber filter 34 and dredge it by disturbing the fiber filter 34 after the fiber filter 34 is blocked to a certain extent.

[0072] Specifically, the preparation steps are: the pump device 5 operates at a preset power P, and extracts the produced water in the fiber filter 34 through the suction pipe 51; at this time, the fiber filter 34 is in a brand new and unblocked state, and the flow rate pumped by the pump device 5 is recorded by the flow meter 53 as the standard flow rate Q.

[0073] The self-cleaning steps are as follows: the pump device 5 operates at a preset power P, and extracts the produced water in the fiber filter 34 through the water extraction pipe 51; the flow rate pumped by the pump device 5 is recorded by the flow meter 53 as the actual flow rate Q1. When the device continues to operate for a period of time, the surface of the fiber filter 34 will be blocked to a certain extent, and the fiber filter 34 will be gradually blocked, and the actual flow rate Q1 will gradually decrease;

[0074] When the actual flow rate Q1≥0.8Q, the electric control valve 462 maintains the closed state; when the actual flow rate Q1<0.8Q, the electric control valve 462 switches from the closed state to the open state, and the duration is t, and the range of t is generally 1-2s. After the duration t ends, the electric control valve 462 will close again. After the electric control valve 462 is closed for 5-15s, the size of Q1 and Q will be compared again, and the above steps will be repeated.

[0075] By adjusting the on-off of the electric control valve 462, the inner tube 352 can be lifted and lowered, thereby controlling the hollow filter fiber 343 to switch between tension and bending, thereby intermittently disturbing the hollow filter fiber 343 and clearing the blockage.

[0076] When the electric control valve 462 is opened, the water flow in the water supply pipe 4 will enter the hollow filter fiber 343. At this time, the actual flow rate Q1 will not be able to represent the total amount of water produced. The flow sensor 45 can detect and record the water supply flow rate Q2 in the water supply pipe 4. The water production flow rate of the fiber filter 34 is Q3, Q3=Q1-Q2. By calculating the flow difference, the total amount of water produced can be detected and recorded.

[0077] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A filtering and purification component, characterized in that: The invention comprises a support frame (30) and a plurality of fiber filters (34), wherein the support frame (30) comprises a fixed transverse tube (311) and a movable transverse tube (331), wherein the movable transverse tube (331) is located at the lower side of the fixed transverse tube (311) and can move up and down relative to the fixed transverse tube (311); the fiber filter (34) comprises an upper tube body (341), a lower tube body (342) and hollow filter fibers (343), wherein the upper tube body (341) is fixed to and connected to the fixed transverse tube (311), the lower tube body (342) is fixed to and connected to the movable transverse tube (331), and the two ends of the hollow filter fibers (343) are respectively connected to the upper tube body (341) and the lower tube body (342); the fixed transverse tube (311) is provided with a water pumping port (312), and the water pumping port (312) is connected to a water pumping pipe (51); The fixed transverse tube (311) and the movable transverse tube (331) are connected via a piston tube assembly (35), the piston tube assembly (35) comprising an outer tube member (351) and an inner tube member (352), the upper end of the outer tube member (351) being fixed to and connected to the fixed transverse tube (311), and the lower end of the inner tube member (352) being fixed to the movable transverse tube (331); the outer tube member (351) and the inner tube member (352) being sleeved together to form a sealed sliding connection structure, and the inner cavities of the outer tube member (351) and the inner tube member (352) being sealed and separated from each other; It also includes a water supply pipe (4), wherein a first end (41) of the water supply pipe (4) is connected to the movable transverse pipe (331) via a conduit (46), and a second end (42) of the water supply pipe (4) is connected to the clean water tank (2); the conduit (46) is provided with an electric control valve (462), and the electric control valve (462) can switch the conduit (46) on and off.

2. A filtering and purifying component according to claim 1, characterized in that: The upper end of the inner tube member (352) is closed and extends into the outer tube member (351). A sliding sealing ring (354) is installed on the outer periphery of the inner tube member (352). A piston member (353) is installed on the upper end of the inner tube member (352). The piston member (353) is connected to the inner periphery of the outer tube member (351).

3. A filtering and purifying component according to claim 1, characterized in that: The water supply pipe (4) is installed with a flow sensor (45).

4. A filtering and purifying component according to claim 3, characterized in that: The water supply pipe (4) is provided with a one-way valve (43) and a two-way valve (44), and the flow sensor (45) is located between the one-way valve (43) and the two-way valve (44); the one-way valve (43) and the two-way valve (44) can both conduct one-way flow from the second end (42) to the first end (41).

5. A filtering and purifying component according to claim 1, characterized in that: The support frame (30) further comprises an air guide transverse tube (323), which is located directly below the movable transverse tube (331) and is used to support the movable transverse tube (331); the movable transverse tube (331) is provided with a through hole (324) which passes through from top to bottom, the lower end of the through hole (324) is connected to the aeration tube (61), a lifting block (325) is slidably connected in the through hole (324) from top to bottom, the lifting block (325) is provided with an air guide groove (326), and the air guide groove (326) passes through the lower side and the outer peripheral surface of the lifting block (325); during the aeration process of the aeration tube (61), the lifting block (325) can press upward to lift up the movable transverse tube (331).

6. A filtering and purifying component according to claim 5, characterized in that: The support frame (30) further comprises an upper frame (31), a movable frame (33) and a lower frame (32) arranged from top to bottom, wherein the upper frame (31) and the lower frame (32) are fixed to each other, and the movable frame (33) can move up and down between the upper frame (31) and the lower frame (32).

7. A filtering and purifying component according to claim 6, characterized in that: The fixed transverse tube (311) is installed on the upper frame (31), the movable transverse tube (331) is installed on the movable frame (33), and the air guide transverse tube (323) is installed on the lower frame (32); the lower frame (32) is fixedly installed with a slide rail member (321), the movable frame (33) is fixedly installed with a slider member (322), and the slider member (322) can be slid up and down and is connected to the slide rail member (321).

8. A river water purification device, characterized in that: It comprises a raw water tank (1), a clean water tank (2), a pump device (5), a fan (6) and a filtering and purifying component as claimed in any one of claims 1 to 7, The filtering and purifying component is located in the raw water pool (1); the input end of the pump device (5) is connected to the water inlet (312) of the fixed horizontal pipe (311) through a water pumping pipe (51); the output end of the pump device (5) pumps produced water to the clean water pool (2) through a drainage pipe (52); the drainage pipe (52) is installed with a flow meter (53); the fan (6) is connected to an aeration pipe (61), the aeration pipe (61) extends into the raw water pool (1) and is located at the lower side of the fiber filter (34) for aeration; The first end (41) and the second end (42) of the water supply pipe (4) are respectively located in the raw water tank (1) and the clean water tank (2).

9. A method for purifying river water, characterized in that: Using the river water purification device as claimed in claim 8, the river water purification method includes a preparation step, a self-cleaning step; The preparation steps are: The raw water to be purified is loaded into the raw water tank (1); A new fiber filter (34) is used, and the pump device (5) is operated at a preset power P to extract the produced water in the fiber filter (34) through the water extraction pipe (51); Record the pumping flow rate of the pump device (5) as the standard flow rate Q; The self-cleaning steps are: The pump device (5) operates at a preset power P to extract the produced water in the fiber filter (34) through the water extraction pipe (51); The pumping flow rate of the pump device (5) is the actual flow rate Q1, and the fiber filter (34) is gradually blocked, and the actual flow rate Q1 will gradually decrease; When the actual flow rate Q1≥0.8Q, the electric control valve (462) maintains a closed state; when the actual flow rate Q1<0.8Q, the electric control valve (462) switches from a closed state to an open state, with a duration of t.

10. A river water purification method according to claim 9, characterized in that: In the self-cleaning step, the water replenishment flow rate in the water replenishment pipe (4) is Q2, and the water production flow rate of the fiber filter (34) is Q3, Q3=Q1-Q2.

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