A filtering device for efficient water supply and a method of using the same

Abstract

The invention discloses a filtering device for efficient water supply and a method of using the same, and belongs to the technical field of impurity separation. The filtering device comprises a shell and a cyclone desander, a bag filter, a security precision filter, an ultrafiltration filter and a water tank installed in the shell. The cyclone desander, the bag filter, the security precision filter, the ultrafiltration filter and the water tank are connected in series in sequence through a pipeline, and a centrifugal water pump, a pressure-stabilizing tank and an ultraviolet disinfector are also installed on the pipeline; a bellows is connected to the bottom of the cyclone desander, a dirt collecting box is connected to the bottom of the bellows, a sewage pipe is connected to the bottom of the sewage collecting box, a hose is connected to one end of the sewage pipe, and the hose is connected to an external sewage pipe; a base is also installed on the bottom wall of the shell, a touch switch is installed on the upper surface of the base, the touch switch is located directly below the sewage pipe, a sewage electric valve is installed on the sewage pipe, and the touch switch is electrically connected to the sewage electric valve; the invention realizes automatic sewage discharge and ensures the reliability of water supply.

Description

Technical Field

[0001] The present invention relates to the technical field of impurity separation, and in particular to a filtering device for efficient water supply and a use method thereof. Background Art

[0002] As people's demand for healthy living and high-quality water sources continues to grow, the quality of drinking water is constantly improving. Currently, water supply stations are mostly built on a village basis. However, the water supply stations that need to be built have long construction periods, high costs, low efficiency, unstable water quality, large footprints, and high maintenance costs, which have caused waste of economic resources and materials. The aging and rusting of water supply pipelines in old communities have caused secondary water pollution. It is imperative to develop efficient, convenient, and economical water purification solutions.

[0003] At present, there are many water supply equipment on the market, which mainly use cyclone desander and multiple filters in series, combined with disinfection equipment, to effectively remove impurities and harmful substances in the water. As one of the main equipment for separating large particles of impurities in water, cyclone desander has the characteristics of high efficiency, economy and environmental protection. However, in long-term use, we found that it is necessary to regularly discharge the cyclone desander. There are currently two mainstream methods. The first is to manually open the drain valve to discharge impurities. The second is to install a time control system on the drain pipe, relying on the time control system to collect signals and transmit them to the control system. The system automatically issues action instructions according to the change of time to make the drain electric valve act, and the automatic drainage process, but both manual and automatic drainage have certain limitations: manual drainage requires manual operation. If the user does not drain in time, it will cause more impurities inside the cyclone desander, and the sediment will gradually accumulate, occupying the effective space, reducing the water flow channel, thereby reducing the processing capacity and efficiency of the equipment. Automatic drainage is carried out according to time, but the sand content of the source water is not fixed. If the sand content of the source water is high, the impurities inside the cyclone desander will increase per unit time, and there is still a problem of untimely drainage. Summary of the invention

[0004] The purpose of the present invention is to provide a filtering device with efficient water supply and a method of use, so as to solve the following technical problems: the existing cyclone desander has limitations in sewage discharge, and whether it is manual or automatic sewage discharge, there may be a problem of untimely sewage discharge.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A high-efficiency water supply filtering device, comprising a housing and a cyclone desander, a bag filter, a security precision filter, an ultrafiltration filter and a water tank installed in the housing, wherein the cyclone desander, the bag filter, the security precision filter, the ultrafiltration filter and the water tank are sequentially connected in series through a pipeline, and a centrifugal water pump, a pressure regulating tank and an ultraviolet disinfector are also installed on the pipeline;

[0007] The bottom of the cyclone desander is connected to a bellows, the bottom of the bellows is connected to a dirt collecting box, the bottom of the dirt collecting box is connected to a drain pipe, one end of the drain pipe is connected to a hose, the hose is connected to an external drain pipe, a base is also installed on the bottom wall of the shell, a touch switch is installed on the upper surface of the base, the touch switch is located directly below the drain pipe, a drain electric valve is installed on the drain pipe, the touch switch is electrically connected to the drain electric valve, an opening is provided on the top wall of the dirt collecting box, the bottom of the cyclone desander penetrates the opening and extends into the dirt collecting box, and a blocking mechanism is provided between the bottom of the cyclone desander and the dirt collecting box;

[0008] Support rods are symmetrically arranged on the base, and guide grooves are provided on the side walls adjacent to the two support rods in the vertical direction. Guide blocks are slidably connected in the guide grooves, and the two guide blocks are fixedly connected to the dirt collecting box.

[0009] As a further solution of the present invention: the sealing mechanism includes two fixed blocks, the two fixed blocks are symmetrically installed on the bottom of the cyclone desander, and the two fixed blocks are fixed with a fixed plate at one end away from each other, and a sealing plate is movably provided on the fixed plate, and a supporting block is fixed on the lower surface of the sealing plate, and a first spring is connected to the supporting block, one end of the first spring is connected to the fixed plate, and push blocks are symmetrically provided on the inner surface of the top wall of the dirt collecting box.

[0010] As a further solution of the present invention: the cross section of the push block is a right-angled trapezoidal structure, and the sides of the two blocking plates that are away from each other are both provided with inclined surfaces.

[0011] As a further solution of the present invention: air pumps are symmetrically arranged on the upper surface of the base, piston rods of the two air pumps are fixedly connected to the two guide blocks respectively, and a second spring is sleeved on the piston rods of the air pumps.

[0012] As a further solution of the present invention: a T-shaped block is fixed on the base through a vertical rod, and the T-shaped block is a hollow structure. The air outlet pipes of the two air pumps are respectively connected to the two ends of the T-shaped block, and a movable rod is movably provided at the other end of the T-shaped block. A positioning block is fixed at one end of the movable rod, and a piston is fixed at the other end. A positioning groove is provided on the side wall of the dirt collecting box near the positioning block, and the positioning block matches the size of the positioning groove.

[0013] As a further solution of the present invention: a pressure relief box is fixed on the top of the T-shaped block, the pressure relief box is connected to the T-shaped block, a stopper is movably provided on the side wall of the pressure relief box close to the positioning block, a connecting rod is connected to the stopper, one end of the connecting rod is fixedly connected to the movable rod, a pressure relief pipe is connected to the top of the pressure relief box, a pressure relief valve is installed in the pressure relief pipe, a third spring is connected to the side wall of the piston away from the movable rod, one end of the third spring is connected to the inner wall of the T-shaped block.

[0014] A method for using a filtering device for efficient water supply comprises the following steps:

[0015] S1. The source water passes through the pipeline in sequence through the cyclone desander, bag filter, security precision filter and ultrafiltration filter, and finally enters the water tank;

[0016] S2. The impurities intercepted and separated inside the cyclone desander enter the dirt collecting box. As the impurities increase, the overall weight of the dirt collecting box gradually increases;

[0017] S3. The sewage collecting box gradually descends under the influence of gravity. When the impurities are saturated, the sewage discharge pipe of the sewage collecting box contacts the switch, and the sewage discharge electric valve opens to perform sewage discharge operation.

[0018] Beneficial effects of the present invention:

[0019] (1) The present invention realizes the automatic sewage discharge function of the cyclone desander, effectively solving the problem of untimely sewage discharge caused by untimely manual operation or unreasonable time setting of the automatic control system. The sewage collecting box is connected to the cyclone desander through a bellows, and the impurities generated by the cyclone desander can automatically fall into the sewage collecting box. The touch switch is located directly below the sewage discharge pipe. When there are too many impurities in the sewage collecting box, the sewage collecting box sinks and presses the touch switch, and the sewage discharge electric valve is triggered through electrical connection to realize automatic sewage discharge, thereby avoiding the accumulation of impurities affecting the processing capacity and efficiency of the equipment, and ensuring the stability of the system and the reliability of water supply;

[0020] (2) The present invention provides a blocking mechanism. When discharging sewage, the blocking mechanism blocks the bottom of the cyclone desander to prevent impurities and sewage from continuing to enter the sewage collection box, thereby ensuring smooth sewage discharge.

[0021] (3) The present invention provides an air pump, a T-shaped block, a movable rod and a piston. When the sewage is discharged, in order to ensure that the sewage is discharged completely, when the sewage collecting box is lowered to a specified position, the positioning block is inserted into the positioning groove to avoid the sewage collecting box being immediately raised and resulting in incomplete sewage discharge, so that the impurities have enough time to be discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the cyclone desander of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the base and the dirt collecting box of the present invention;

[0026] Figure 4 It is a schematic diagram of the internal structure of the dirt collecting box of the present invention;

[0027] Figure 5 yes Figure 4 The enlarged view of point A in the middle;

[0028] Figure 6 It is a structural schematic diagram of the T-shaped block of the present invention;

[0029] Figure 7 It is a schematic diagram of the internal structure of the T-shaped block of the present invention;

[0030] Figure 8 It is a schematic diagram of the internal structure of the pressure relief box of the present invention.

[0031] In the figure: 1. shell; 2. cyclone sand remover; 3. bag filter; 4. security precision filter; 5. ultrafiltration filter; 6. water tank; 7. centrifugal water pump; 8. pressure regulating tank; 9. bellows; 10. sewage collecting box; 11. sewage pipe; 12. hose; 13. base; 14. touch switch; 15. support rod; 16. guide block; 17. opening; 18. push block; 19. fixed block; 20. fixed plate; 21. blocking plate; 22. support block; 23. first spring; 24. air pump; 25. second spring; 26. outlet pipe; 27. positioning groove; 28. vertical rod; 29. ​​T-block; 30. movable rod; 31. positioning block; 32. piston; 33. third spring; 34. pressure relief box; 35. pressure relief pipe; 36. stopper; 37. connecting rod; 38. pressure relief valve.

[0032] The drawings are only used for illustrative purposes and are not to be construed as limitations of the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced in size, and do not represent the size and shape of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. DETAILED DESCRIPTION

[0033] 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.

[0034] See also Figures 1 to 5 As shown, the present invention is a filtering device for efficient water supply, comprising a housing 1 and a cyclone desander 2, a bag filter 3, a security precision filter 4, an ultrafiltration filter 5 and a water tank 6 installed in the housing 1, the cyclone desander 2, the bag filter 3, the security precision filter 4, the ultrafiltration filter 5 and the water tank 6 are sequentially connected in series through pipelines, and a centrifugal water pump 7, a pressure-stabilizing tank 8 and an ultraviolet disinfector are also installed on the pipeline; a bellows 9 is connected to the bottom of the cyclone desander 2, a dirt collecting box 10 is connected to the bottom of the dirt collecting box 10, a sewage pipe 11 is connected to the bottom of the sewage pipe 11, a hose 12 is connected to one end of the sewage pipe 11, and the hose 12 is connected to the external sewage pipe. The housing 1 A base 13 is also installed on the bottom wall of the cyclone desander 2. A touch switch 14 is installed on the upper surface of the base 13. The touch switch 14 is located directly below the sewage pipe 11. A sewage discharge electric valve is installed on the sewage pipe 11. The touch switch 14 is electrically connected to the sewage discharge electric valve. An opening 17 is provided on the top wall of the sewage collecting box 10. The bottom of the cyclone desander 2 passes through the opening 17 and extends into the sewage collecting box 10. A blocking mechanism is provided between the bottom of the cyclone desander 2 and the sewage collecting box 10; support rods 15 are symmetrically provided on the base 13. Guide grooves are provided on the side walls close to the two support rods 15 in the vertical direction. Guide blocks 16 are slidably connected in the guide grooves. The two guide blocks 16 are fixed to the sewage collecting box 10 Connection; the source water first enters the cyclone desander 2 to preliminarily remove large particles larger than 0.1mm in the water, the bag filter 3 further filters 5μmm tiny particles and suspended matter, the security precision filter 4 can further intercept 2μm fine impurities, the ultrafiltration filter 5 can completely remove 0.01μm colloids and macromolecular organic matter in the water, the water tank 6 is used to store purified water, ozone equipment can be added to the water tank 6 for disinfection, and the ultraviolet disinfector is used to perform the final disinfection of microorganisms in the water. The centrifugal water pump 7 provides power for the water supply system, and the pressure regulating tank 8 is used to stabilize the pressure of the system to ensure stable water output; the source water is cut from the water inlet of the cyclone desander 2 at a certain pressure. After entering the equipment, a strong rotation motion will be generated. Due to the different densities of sand and water, under the action of centrifugal force, centripetal force, buoyancy and fluid drag, the water with low density rises and is discharged from the water outlet, while the sand particles with high density are thrown to the inner wall of the equipment and move downward, and finally fall into the sewage collecting box 10 at the bottom. When the impurities in the sewage collecting box 10 increase, the sewage collecting box 10 gradually descends. When the impurities inside the sewage collecting box 10 are saturated, the sewage pipe 11 on the sewage collecting box 10 sinks and presses the touch switch 14, which triggers the action of the sewage discharge electric valve through electrical connection, realizes automatic sewage discharge, avoids the accumulation of impurities affecting the processing capacity and efficiency of the equipment, and ensures the stability of the system and the reliability of water supply.

[0035] See also Figure 4 and Figure 5The blocking mechanism includes two fixed blocks 19, which are symmetrically mounted on the bottom of the cyclone desander 2. A fixed plate 20 is fixed to the ends of the two fixed blocks 19 that are far away from each other. A blocking plate 21 is movably arranged on the fixed plate 20. A support block 22 is fixed to the lower surface of the blocking plate 21. A first spring 23 is connected to the support block 22. One end of the first spring 23 is connected to the fixed plate 20. A push block 18 is symmetrically arranged on the inner surface of the top wall of the sewage collecting box 10. The cross section of the push block 18 is a right-angled trapezoidal structure. An inclined surface is arranged on the side away from the two blocking plates 21. In order to prevent the sewage discharge from being affected by the cyclone desander 2, when the sewage collecting box 10 descends, the two push blocks 18 will gradually squeeze the blocking plate 21, and the two blocking plates 21 gradually approach each other. When the sewage collecting box 10 descends to a specified height and stops descending, the blocking plate 21 just blocks the bottom of the cyclone desander 2 to prevent impurities from continuing to enter the sewage collecting box 10 during the sewage discharge process.

[0036] See also Figure 3 An air pump 24 is symmetrically arranged on the upper surface of the base 13. The piston rods of the two air pumps 24 are fixedly connected to the two guide blocks 16 respectively, and a second spring 25 is mounted on the piston rod of the air pump 24. In order to prevent the dirt collecting box 10 from descending too quickly, the air pump 24 and the second spring 25 cooperate to provide a certain buffer so that the dirt collecting box 10 can absorb enough impurities.

[0037] See also Figure 3 , Figure 6 and Figure 7 The base 13 is fixed with a T-shaped block 29 through a vertical rod 28. The T-shaped block 29 is a hollow structure. The air outlet pipes 26 of the two air pumps 24 are respectively connected to the two ends of the T-shaped block 29. A movable rod 30 is movably provided at the other end of the T-shaped block 29. A positioning block 31 is fixed at one end of the movable rod 30, and a piston 32 is fixed at the other end. A positioning groove 27 is opened on the side wall of the dirt collecting box 10 near the positioning block 31, and the size of the positioning block 31 matches the positioning groove 27. In order to prevent the dirt collecting box 10 from rising and resetting in advance, so that the sewage discharge is more thorough, when the sewage collecting box 10 is lowered, the air pump 24 is pushed to work to increase the internal air pressure of the T-shaped block 29. At this time, it is blocked by the sewage collecting box 10 and the positioning block 31 cannot move. When the sewage collecting box 10 drops to the specified position, the positioning groove 27 is exactly at the same height as the positioning block 31, and the positioning block 31 is inserted into the positioning groove 27. During the sewage discharge process, the sewage collecting box 10 will not rise, and the sewage discharge is more thorough.

[0038] See also Figure 6 , Figure 7 and Figure 8A pressure relief box 34 is fixed on the top of the T-shaped block 29, and the pressure relief box 34 is connected to the T-shaped block 29. A stopper 36 is movably provided on the side wall of the pressure relief box 34 close to the positioning block 31, and a connecting rod 37 is connected to the stopper 36, and one end of the connecting rod 37 is fixedly connected to the movable rod 30. A pressure relief pipe 35 is connected to the top of the pressure relief box 34, and a pressure relief valve 38 is installed in the pressure relief pipe 35. A third spring 33 is connected to the side wall of the piston 32 away from the movable rod 30, and one end of the third spring 33 is connected to the inner wall of the T-shaped block 29; in order to make the sewage collecting box after the sewage discharge is completed 10 can be automatically reset. Initially, the stopper 36 is located in the pressure relief box 34, so that the T-block 29 cannot be connected with the pressure relief pipe 35. When the positioning block 31 is inserted into the positioning groove 27, the third spring 33 is stretched, the stopper 36 moves a distance, and the T-block 29 is connected with the pressure relief pipe 35. At this time, the internal gas of the T-block 29 is slowly discharged through the pressure relief valve 38. Under the action of the third spring 33, the piston 32 and the positioning block 31 are automatically reset. When the inside of the T-block 29 returns to normal pressure, the positioning block 31 is separated from the positioning groove 27, and the dirt collecting box 10 can be automatically reset.

[0039] A method for using a filtering device for efficient water supply comprises the following steps:

[0040] S1, source water passes through the pipeline in sequence through the cyclone desander 2, bag filter 3, security precision filter 4 and ultrafiltration filter 5, and finally enters the water tank 6;

[0041] S2, the impurities intercepted and separated inside the cyclone desander 2 enter the dirt collecting box 10. As the impurities increase, the overall weight of the dirt collecting box 10 gradually increases;

[0042] S3, the sewage collecting box 10 gradually descends under the influence of gravity. When the impurities are saturated, the sewage discharge pipe 11 of the sewage collecting box 10 contacts the touch switch 14, and the sewage discharge electric valve opens to perform sewage discharge operation.

[0043] Working principle of the present invention: after the source water enters the device tangentially from the water inlet of the cyclone sand remover 2 at a certain pressure, a strong rotation motion will be generated. Due to the different densities of sand and water, under the action of centrifugal force, centripetal force, buoyancy and fluid drag, the water with low density rises and is discharged from the water outlet, while the sand particles with high density are thrown to the inner wall of the device and move downward, and finally fall into the dirt collecting box 10 at the bottom. When the impurities in the dirt collecting box 10 increase, the dirt collecting box 10 gradually descends, and the two push blocks 18 gradually squeeze the sealing plate 21, and the two push blocks 18 gradually squeeze the sealing plate 21. The sealing plate 21 gradually approaches. When the impurities inside the sewage collecting box 10 are saturated, the sewage discharge pipe 11 on the sewage collecting box 10 sinks and presses the touch switch 14. At this time, the sealing plate 21 just blocks the bottom of the cyclone desander 2 to prevent impurities from continuing to enter the sewage collecting box 10 during the sewage discharge process. The sewage discharge electric valve is triggered by electrical connection to realize automatic sewage discharge, avoiding the accumulation of impurities affecting the processing capacity and efficiency of the equipment, ensuring the stability of the system and the reliability of water supply. The bellows 9 has a certain degree of elasticity to avoid sewage leakage;

[0044] During the descent of the dirt collecting box 10, the air pump 24 and the second spring 25 cooperate to provide a certain buffer to prevent the dirt collecting box 10 from descending too fast. At the same time, the air pump 24 inflates the T-shaped block 29 to increase the internal air pressure of the T-shaped block 29. Initially, the positioning block 31 cannot move due to the obstruction of the dirt collecting box 10, and the air pressure in the T-shaped block 29 gradually increases. When the dirt collecting box 10 descends to the specified position, the positioning groove 27 is exactly at the same height as the positioning block 31. The positioning block 31 is inserted into the positioning groove 27 to fix the position of the dirt collecting box 10. During the sewage discharge process, the dirt collecting box 10 will not rise, and there is enough time for sewage discharge, and the sewage discharge is more thorough.

[0045] Initially, the stopper 36 is located at the pressure relief box 34 (eg Figure 6 and Figure 8 As shown in the figure, the T-block 29 cannot be connected to the pressure relief pipe 35. When the positioning block 31 is inserted into the positioning groove 27, the third spring 33 is stretched, and the stopper 36 moves a distance with the movable rod 30 and the connecting rod 37. At this time, the T-block 29 is connected to the pressure relief pipe 35, and the internal gas of the T-block 29 is slowly discharged through the pressure relief valve 38. Under the action of the third spring 33, the piston 32 and the positioning block 31 are automatically reset. When the inside of the T-block 29 returns to normal pressure, the positioning block 31 is separated from the positioning groove 27. Under the action of the second spring 25, the dirt collecting box 10 can be automatically reset. At the same time, the two blocking plates 21 are also reset under the action of the first spring 23, and impurities can continue to enter the dirt collecting box 10.

[0046] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A high-efficiency water supply filtering device, comprising a housing (1) and a cyclone desander (2), a bag filter (3), a security precision filter (4), an ultrafiltration filter (5) and a water tank (6) installed in the housing (1), characterized in that: The cyclone desander (2), bag filter (3), security precision filter (4), ultrafiltration filter (5) and water tank (6) are sequentially connected in series through a pipeline, and a centrifugal water pump (7), a pressure regulating tank (8) and an ultraviolet disinfector are also installed on the pipeline; The bottom of the cyclone desander (2) is connected to a bellows (9), the bottom of the bellows (9) is connected to a sewage collecting box (10), the bottom of the sewage collecting box (10) is connected to a sewage discharge pipe (11), one end of the sewage discharge pipe (11) is connected to a hose (12), the hose (12) is connected to an external sewage discharge pipe, a base (13) is also installed on the bottom wall of the shell (1), a touch switch (14) is installed on the upper surface of the base (13), the touch switch (14) is located directly below the sewage discharge pipe (11), a sewage discharge electric valve is installed on the sewage discharge pipe (11), the touch switch (14) is electrically connected to the sewage discharge electric valve, an opening (17) is provided on the top wall of the sewage collecting box (10), the bottom of the cyclone desander (2) penetrates the opening (17) and extends into the sewage collecting box (10), and a blocking mechanism is provided between the bottom of the cyclone desander (2) and the sewage collecting box (10); Support rods (15) are symmetrically arranged on the base (13); guide grooves are provided on the adjacent side walls of the two support rods (15) in the vertical direction; guide blocks (16) are slidably connected in the guide grooves; and the two guide blocks (16) are fixedly connected to the dirt collecting box (10); The upper surface of the base (13) is symmetrically provided with air pumps (24), the piston rods of the two air pumps (24) are respectively fixedly connected to the two guide blocks (16), and a second spring (25) is sleeved on the piston rods of the air pumps (24); A T-shaped block (29) is fixed to the base (13) via a vertical rod (28); the T-shaped block (29) is a hollow structure; the air outlet pipes (26) of the two air pumps (24) are respectively connected to the two ends of the T-shaped block (29); a movable rod (30) is movably provided at the other end of the T-shaped block (29); a positioning block (31) is fixed to one end of the movable rod (30); and a piston (32) is fixed to the other end; a positioning groove (27) is provided on the side wall of the dirt collecting box (10) near the positioning block (31); the positioning block (31) and the positioning groove (27) have matching sizes.

2. A high-efficiency water supply filtering device according to claim 1, characterized in that: The blocking mechanism comprises two fixed blocks (19), the two fixed blocks (19) are symmetrically mounted at the bottom of the cyclone desander (2), a fixed plate (20) is fixed to the ends of the two fixed blocks (19) which are away from each other, a blocking plate (21) is movably arranged on the fixed plate (20), a support block (22) is fixed to the lower surface of the blocking plate (21), a first spring (23) is connected to the support block (22), one end of the first spring (23) is connected to the fixed plate (20), and a push block (18) is symmetrically arranged on the inner surface of the top wall of the dirt collecting box (10).

3. The high-efficiency water supply filtering device according to claim 2, characterized in that: The push block (18) has a cross-section of a right-angled trapezoidal structure, and the two sealing plates (21) are provided with inclined surfaces on the sides away from each other.

4. The high-efficiency water supply filtering device according to claim 1, characterized in that: A pressure relief box (34) is fixed on the top of the T-shaped block (29), and the pressure relief box (34) is connected to the T-shaped block (29). A stopper (36) is movably provided on the side wall of the pressure relief box (34) close to the positioning block (31), and a connecting rod (37) is connected to the stopper (36), and one end of the connecting rod (37) is fixedly connected to the movable rod (30). A pressure relief pipe (35) is connected to the top of the pressure relief box (34), and a pressure relief valve (38) is installed in the pressure relief pipe (35). A third spring (33) is connected to the side wall of the piston (32) away from the movable rod (30), and one end of the third spring (33) is connected to the inner wall of the T-shaped block (29).

5. The method for using the high-efficiency water supply filtering device according to claim 1, characterized in that: The following steps are involved: S1, source water passes through the pipeline in sequence through the cyclone desander (2), the bag filter (3), the security precision filter (4) and the ultrafiltration filter (5), and finally enters the water tank (6); S2, the impurities intercepted and separated inside the cyclone desander (2) enter the dirt collecting box (10), and as the amount of impurities increases, the overall weight of the dirt collecting box (10) gradually increases; S3: The sewage collecting box (10) gradually descends due to the influence of gravity. When the sewage collecting box (10) is saturated with impurities, the sewage discharge pipe (11) of the sewage collecting box (10) contacts the switch (14), and the sewage discharge electric valve opens to perform sewage discharge operation.

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