Portable integrated water purification device suitable for rural areas and use method thereof

Abstract

The invention relates to the field of portable water treatment, in particular to a portable integrated water purification device suitable for rural areas and a use method thereof, after a filter screen continuously intercepts impurities, the surface of the filter screen is extremely easy to block, so that the water inlet resistance is increased, the water outlet flow is sharply reduced, and frequent blockage not only affects normal water taking, but also affects normal water purification. And a user is forced to frequently and manually disassemble and clean the filter screen, the operation is tedious, and the maintenance is inconvenient. Displacement of the annular supporting plate is transmitted to the cleaning housing through the spherical hinge connecting rod to drive the cleaning housing to clean along the outer surface of the cylindrical filter screen, the cleaning operation is only performed when the valve is closed, and pollutants stripped by the cleaning brush block cannot diffuse along with turbulent flow under the action of no water inflow interference.

Description

Technical Field

[0001] This invention relates to the field of convenient water treatment, specifically to a portable integrated water purification device suitable for rural areas and its usage method. Background Technology

[0002] An outdoor water purifier is a portable drinking water supply device that is convenient to carry when engaging in outdoor activities. It does not need to be installed on a faucet or require tap water pressure. It can purify natural water such as rainwater, stream water, river water, and lake water into sterile, safe drinking water free of suspended pollutants and other harmful substances, requiring only human intervention.

[0003] Rural areas still rely on decentralized water sources, such as well water, river water, and spring water. During the extraction and storage of these water sources, various particulate matter and suspended solids, such as silt and algae, are easily mixed in.

[0004] Water purification devices with preliminary filtration functions are widely used. Their core components typically include a filter screen installed at the water inlet to intercept large particulate impurities in the water.

[0005] However, such devices still have the following problems in practical use: First, after continuously intercepting impurities, the surface of the filter screen is easily clogged, which leads to increased water inlet resistance and a sharp decrease in water outflow. Frequent clogging not only affects normal water intake, but also forces users to frequently disassemble and clean the filter screen manually, which is cumbersome and inconvenient to maintain. Secondly, when the existing self-cleaning action is carried out simultaneously with the water intake process, the impurities stirred up may enter the subsequent system with the water flow, affecting the water purification effect, or the cleaning power is insufficient, making it difficult to remove the biofilm and sticky impurities that are tightly attached to the surface of the filter screen. Summary of the Invention

[0006] The purpose of this invention is to provide a portable integrated water purification device and its usage method suitable for rural areas, in order to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: A portable integrated water purification device suitable for rural areas, comprising a filtration component, suitable for preliminary filtration of particulate matter contained in water during water resource extraction. The filtration component can be integrated into the water inlet of a mobile water tank. The mobile water tank is configured with an inlet unit, a drain unit, and a purification unit in sequence according to the water treatment process. The filtration component is located at the inlet end of the inlet unit, wherein the inlet unit is responsible for introducing external water into the mobile water tank, and the drain unit transports the pre-filtered water to the purification unit for further treatment.

[0007] Preferably, the filtration assembly includes a filter tube fixedly installed at the inlet of the mobile water tank, a cylindrical filter screen is sleeved on the outside of the filter tube, and the filtration assembly is also equipped with a self-cleaning mechanism for periodically removing the trapped material attached to the outer surface of the cylindrical filter screen.

[0008] Preferably, the self-cleaning mechanism includes a mounting cover fixedly installed at the bottom inlet of the movable water tank. The mounting cover has an axially sliding annular support plate inside. The annular support plate is connected to the inner wall of the mounting cover by a plurality of compression springs evenly distributed in the circumferential direction, so that the annular support plate can move smoothly downward along the axial direction of the filter tube when under pressure.

[0009] Preferably, the bottom of the annular support plate is hinged with three circumferentially distributed ball joints, and the other end of each ball joint is connected to a cleaning cover. The three ball joints are arranged radially at a predetermined angle around the axis of the filter tube to form a stable cone. The cleaning cover is coaxially sleeved with the annular support plate on the outside of the cylindrical filter screen. Its inner wall is provided with several detachable cleaning brushes, and the cleaning brushes are in contact with the outer surface of the cylindrical filter screen.

[0010] Preferably, the outer periphery of the cleaning cover is provided with an annular limiting flange, and the bottom of the mounting cover is provided with an annular baffle corresponding to the annular limiting flange.

[0011] Preferably, the water inlet unit includes a water inlet chamber disposed inside the movable water tank, and an axial flow check valve is installed inside the water inlet chamber above the filter tube.

[0012] Preferably, the axial flow check valve includes a valve seat that is threadedly fastened to the inlet of a movable water tank. The valve seat has an axial through hole machined in its center. The sealing surface of the valve seat is a conical sealing surface. A valve cover is installed on the inner wall of the inlet chamber. A valve disc is connected to the valve cover in the direction facing the valve seat via a guide rod. The valve disc and the sealing surface of the valve seat form a seal. A return spring is provided between the valve disc and the valve cover. The return spring provides a preload force for the valve disc to close toward the valve seat.

[0013] Preferably, a permanent magnet is embedded on the end face of the valve disc facing the water inlet, and a repulsive magnetic block with opposite magnetic poles is provided at the corresponding position on the top surface of the annular support plate. A lifting control lever is also provided in the water inlet chamber of the movable water tank, and a sealing piston is installed at the end of the lifting control lever.

[0014] Preferably, the purification unit includes a purification chamber disposed inside the mobile water tank. The purification chamber is filled with a filter element for deep purification of the pre-filtered water. The purification chamber is provided with a water outlet communicating with the outside of the mobile water tank. A water supply pipe is connected between the purification chamber and the water inlet chamber. A one-way flow guide valve is installed in the water supply pipe to ensure that water can only flow into the purification chamber from the water inlet chamber in one direction.

[0015] Preferably, the method of using the portable integrated water purification device suitable for rural areas includes the following steps: S1. Pulling the control lever moves the sealing piston upward, creating negative pressure to open the axial flow check valve; S2. External water enters the inlet chamber through a cylindrical filter screen, completing the initial filtration; S3. Pulling the control lever moves the sealing piston downward, closing the valve disc and cutting off the water inlet channel; S4. The permanent magnet and the repulsive magnetic block generate a repulsive force, which drives the self-cleaning mechanism to work; S5. Clean the housing by moving and rotating it along the cylindrical filter screen to remove surface deposits; S6. Water in the inlet chamber enters the purification unit through the water supply connecting pipe; S7. After being deeply purified by the filter cartridge, the water is discharged through the outlet.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, the cleaning brush continuously scrapes the outer wall of the cylindrical filter screen to remove particulate matter and biofilm adhering to the surface of the cylindrical filter screen. When the restoring force of the compression spring pushes the annular support plate to move up and reset, a cleaning cycle is completed.

[0017] In this invention, the cleaning housing translates axially along the cylindrical filter screen, and the cleaning brush blocks linearly scrape the filter screen surface to remove the main adhering substances. After the annular limiting flange contacts the annular baffle, the ball joint connecting rod expands radially, pushing the cleaning housing to rotate circumferentially. During the rotation of the cleaning housing, the cleaning brush blocks achieve full circumferential coverage cleaning of the outer surface of the cylindrical filter screen. The single axial movement mainly provides a thrust parallel to the direction of the adhering force of the contaminants, which has limited effect on removing firmly embedded contaminants. The shearing force generated between the rotational motion and the filter screen surface can effectively remove sticky substances and particles deeply embedded in the filter screen pores.

[0018] In this invention, the displacement of the annular support plate is transmitted to the cleaning cover through the ball joint connecting rod, driving it to clean along the outer surface of the cylindrical filter screen. The cleaning operation is only performed when the valve is closed. Without the interference of water inlet, the contaminants peeled off by the cleaning brush block will not spread with the turbulent flow, but will move under the action of gravity and the guidance of the cleaning brush block, preventing impurities stirred up during the cleaning process from entering the water inlet chamber. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural development diagram of the mobile water tank of the present invention; Figure 2 This is a three-dimensional sectional view of the mobile water tank structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the water inlet unit in this invention; Figure 4 This is a three-dimensional structural diagram of the axial flow check valve and self-cleaning mechanism in this invention. Figure 5 This is a schematic diagram of the axial flow check valve and the cylindrical filter screen in this invention. Figure 6 This is a cross-sectional view of the axial flow check valve and self-cleaning mechanism in this invention; Figure 7 This is a partial three-dimensional cross-sectional view of the self-cleaning mechanism in this invention. Figure 1 ; Figure 8 This is a partial three-dimensional cross-sectional view of the self-cleaning mechanism in this invention. Figure 2 ; Figure 9 This is a partial three-dimensional cross-sectional view of the self-cleaning mechanism in this invention. Figure 3 ; Figure 10 This is a diagram showing the state of the ball joint connecting rod when the annular limiting flange contacts the annular baffle in this invention.

[0020] In the diagram: 1. Mobile water tank; 2. Filtration assembly; 21. Filter tube; 22. Tubular filter screen; 3. Self-cleaning mechanism; 31. Mounting cover; 32. Annular support plate; 33. Compression spring; 34. Ball joint connecting rod; 35. Cleaning cover; 36. Cleaning brush block; 37. Annular limiting flange; 38. Annular baffle; 4. Water inlet unit; 41. Water inlet chamber; 5. Axial flow check valve; 51. Valve seat; 52. Sealing surface; 53. Valve cover; 54. Guide rod; 55. Valve disc; 56. Return spring; 57. Permanent magnet; 58. Repulsion magnet; 59. Lifting control lever; 510. Sealing piston; 6. Purification unit; 61. Purification chamber; 62. Filter element; 63. Water outlet; 64. Water supply connecting pipe; 65. One-way guide valve. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1 Please see Figures 1 to 10 The present invention provides a technical solution: a portable integrated water purification device suitable for rural areas, including a filtration component 2, which is suitable for preliminary filtration of particulate matter contained in water during water resource extraction and effectively removes impurities trapped on the filter screen surface; For example, the filtration component 2 can be integrated into the water inlet of the mobile water tank 1. The mobile water tank 1 is configured with a water inlet unit 4, a drainage unit and a purification unit 6 in sequence according to the water treatment process. The filtration component 2 disclosed herein is set at the water inlet end of the water inlet unit 4. The water inlet unit 4 is responsible for introducing external water source into the mobile water tank 1, and the drainage unit delivers the pre-filtered water to the purification unit 6 for deep treatment.

[0023] Specifically, in order to achieve preliminary filtration of water during water resource extraction, the filtration treatment component 2 includes a filter pipe 21 fixedly installed at the inlet of the mobile water tank 1, a cylindrical filter screen 22 is sleeved on the outside of the filter pipe 21, and the filtration treatment component 2 is also equipped with a self-cleaning mechanism 3 for periodically removing the trapped material attached to the outer surface of the cylindrical filter screen 22. During the water treatment process, when external water enters the mobile water tank 1 through the water inlet unit 4, it first passes through the filter pipe 21 at the water inlet. The cylindrical filter screen 22 performs preliminary filtration on the incoming water, effectively trapping particulate impurities such as silt and suspended solids outside the filter pipe 21, ensuring that the water entering the mobile water tank 1 has undergone preliminary purification. During the filtration process, the self-cleaning mechanism 3 automatically cleans the outer surface of the cylindrical filter screen 22. On the one hand, this prevents the cylindrical filter screen 22 from becoming clogged due to the accumulation of impurities, ensuring smooth water intake. On the other hand, it prevents the trapped deposits from re-entering the water body during continuous water intake, ensuring stable water intake.

[0024] In this embodiment, the self-cleaning mechanism 3 includes a mounting cover 31 fixedly installed at the bottom water inlet of the movable water tank 1. The mounting cover 31 is provided with an annular support plate 32 that can slide along the axial direction. The annular support plate 32 is connected to the inner wall of the mounting cover 31 by a plurality of compression springs 33 evenly distributed along the circumference, so that the annular support plate 32 can move smoothly downward along the axial direction of the filter tube 21 when it is under pressure, and reset after the external force is released. The bottom of the annular support plate 32 is hinged with three circumferentially distributed ball joint rods 34. The other end of each ball joint rod 34 is connected to a cleaning cover 35. The three ball joint rods 34 are arranged radially at a predetermined angle with the axis of the filter tube 21 as the center, forming a stable cone. The cleaning cover 35 is coaxially sleeved with the annular support plate 32 on the outside of the cylindrical filter screen 22. Its inner wall is provided with several detachable cleaning brush blocks 36. The cleaning brush blocks 36 are in contact with the outer surface of the cylindrical filter screen 22. During the water treatment process, when external water enters the mobile water tank 1 through the cylindrical filter screen 22, the annular support plate 32 moves downward along the axis of the filter tube 21. The displacement of the annular support plate 32 is transmitted to the cleaning cover 35 through the ball joint connecting rod 34, driving it to move downward synchronously along the outer surface of the cylindrical filter screen 22. During this movement, the cleaning brush 36 continuously scrapes the outer wall of the cylindrical filter screen 22 to remove particles and biofilm attached to the surface of the cylindrical filter screen 22. When the restoring force of the compression spring 33 pushes the annular support plate 32 to move upward and reset, a cleaning cycle is completed.

[0025] In this embodiment, the outer periphery of the cleaning cover 35 is provided with an annular limiting flange 37, and the bottom of the mounting cover 31 is provided with an annular baffle 38 corresponding to the annular limiting flange 37. When the annular support plate 32 drives the cleaning cover 35 to move downward through the ball joint connecting rod 34, the cleaning brush block 36 first moves along the axial direction of the cylindrical filter screen 22 to perform preliminary cleaning of the filter screen surface. When the cleaning cover 35 moves down to the point where the annular limiting flange 37 contacts the annular baffle 38 inside the mounting cover 31, as the annular support plate 32 continues to move down, each ball joint connecting rod 34 is constrained by the annular baffle 38, generating synchronous radial expansion motion. The radial expansion motion transforms the cleaning cover 35 from simple axial movement to rotational movement around the axis of the cylindrical filter screen 22. The cleaning housing 35 translates axially along the cylindrical filter screen 22, and the cleaning brush 36 performs linear scraping on the filter screen surface to remove the main adhering substances. After the annular limiting flange 37 contacts the annular baffle 38, the ball joint connecting rod 34 expands radially, pushing the cleaning housing 35 to rotate circumferentially. During the rotation of the cleaning housing 35, the cleaning brush 36 achieves full circumferential coverage cleaning of the outer surface of the cylindrical filter screen 22. The single axial movement mainly provides a thrust parallel to the direction of the adhering force of the contaminants, which has limited effect on removing firmly embedded contaminants. The shearing force generated between the rotational movement and the filter screen surface can effectively remove sticky substances and particles deeply embedded in the filter screen pores.

[0026] In this embodiment, the water inlet unit 4 includes a water inlet chamber 41 disposed inside the movable water tank 1, and an axial flow check valve 5 is installed inside the water inlet chamber 41 above the filter tube 21. The axial flow check valve 5 includes a valve seat 51 that is threadedly fastened to the inlet of the movable water tank 1. The valve seat 51 has an axial through hole machined in its center. The sealing surface 52 of the valve seat 51 is a conical sealing surface 52. A valve cover 53 is installed on the inner wall of the inlet chamber 41. A valve disc 55 is connected to the valve cover 53 in the direction facing the valve seat 51 via a guide rod 54. The valve disc 55 forms a seal with the sealing surface 52 of the valve seat 51. A return spring 56 is provided between the valve disc 55 and the valve cover 53. The return spring 56 provides a preload force for the valve disc 55 to close toward the valve seat 51. A permanent magnet 57 is embedded on the end face of the valve disc 55 facing the water inlet, and a repulsive magnetic block 58 with opposite magnetic poles is provided on the top surface of the annular support plate 32. A lifting control lever 59 is also provided in the water inlet chamber 41 of the movable water tank 1, and a sealing piston 510 is installed at the end of the lifting control lever 59. During the water intake process, when the lifting control lever 59 drives the sealing piston 510 to move upward in the water inlet chamber 41, a negative pressure is formed in the chamber, which drives the valve disc 55 to overcome the force of the return spring 56 and separate from the valve seat 51, opening the water inlet channel, allowing external water to enter the water inlet chamber 41. When water intake is completed, and the lifting control lever 59 moves the sealing piston 510 downward, under the combined action of the return spring 56 and the thrust of the sealing piston 510, the valve disc 55 quickly closes with the sealing surface 52 of the valve seat 51, cutting off the water inlet channel. During the downward closing process of the valve disc 55, due to the repulsive force between the permanent magnet 57 on its end face and the repulsive magnetic block 58 on the annular support plate 32, the repulsive force drives the annular support plate 32 to move downward within the mounting cover 31. The displacement of the annular support plate 32 is transmitted to the cleaning housing 35 through the ball joint connecting rod 34, driving it to clean along the outer surface of the cylindrical filter screen 22. The cleaning operation is only performed when the valve is closed. Without the interference of water inlet, the contaminants peeled off by the cleaning brush block 36 will not spread with the turbulent flow, but will move under the action of gravity and the guidance of the cleaning brush block 36, preventing impurities stirred up during the cleaning process from entering the water inlet chamber 41.

[0027] In this embodiment, the purification unit 6 includes a purification chamber 61 disposed inside the mobile water tank 1. The purification chamber 61 is filled with a filter element 62 for deep purification of the pre-filtered water. The purification chamber 61 is provided with an outlet 63 that communicates with the outside of the mobile water tank 1. A water supply pipe 64 is connected between the purification chamber 61 and the inlet chamber 41. A one-way flow guide valve 65 is installed in the water supply pipe 64 to ensure that water can only flow into the purification chamber 61 from the inlet chamber 41 in one direction. When water is drawn, the lifting control lever 59 moves the sealing piston 510 downward, increasing the pressure in the inlet chamber 41. At this time, the valve disc 55 of the axial flow check valve remains tightly closed with the valve seat 51 under the action of the return spring 56, blocking the entry of external water source. At the same time, the one-way guide valve 65 in the water supply connecting pipe 64 opens, forcing the water that has been pre-filtered in the inlet chamber 41 into the purification chamber 61. After the water flows into the purification chamber 61, it is purified by the filter element 62, and the purified water is output to the outside through the outlet 63.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable integrated water purification device suitable for rural areas, comprising a mobile water tank (1), and an inlet unit (4), a drain unit and a purification unit (6) arranged sequentially according to the water treatment process. The filtration assembly (2) is disposed at the inlet end of the water inlet unit (4); characterized in that: The filter tube (21) is fixedly installed at the inlet of the mobile water tank (1); A cylindrical filter screen (22) is fitted over the outside of the filter tube body (21); A self-cleaning mechanism (3), equipped on the filter treatment assembly (2), is used to periodically remove deposits from the outer surface of the cartridge filter (22).

2. The portable integrated water purification device suitable for rural areas according to claim 1, characterized in that: The self-cleaning mechanism (3) includes a mounting cover (31), which is fixedly installed at the bottom inlet of the mobile water tank (1); An annular support plate (32) is slidably disposed inside the mounting cover (31) along the axial direction; Compression springs (33) are evenly distributed circumferentially between the annular support plate (32) and the inner wall of the mounting cover (31); The ball joint (34) is circumferentially hinged to the bottom of the annular support plate (32), and there are three ball joints (34); The cleaning cover (35) is coaxially sleeved with the annular support plate (32) on the outside of the cylindrical filter screen (22) and connected to the other end of each ball joint connecting rod (34); The cleaning brush block (36) is disposed on the inner wall of the cleaning housing (35) and keeps in contact with the outer surface of the cartridge filter (22).

3. A portable integrated water purification device suitable for rural areas according to claim 2, characterized in that: An annular limiting flange (37) is provided on the outer periphery of the cleaning cover (35); An annular baffle (38) is provided at the bottom of the mounting cover (31) and corresponds to the annular limiting flange (37); The ball joint connecting rod (34) is arranged radially at an angle with the axis of the filter tube (21) as the center.

4. A portable integrated water purification device suitable for rural areas according to claim 1, characterized in that: The water inlet unit (4) includes a water inlet chamber (41) and is located inside the mobile water tank (1); An axial flow check valve (5) is installed inside the inlet chamber (41) and located above the filter tube (21); The lifting control lever (59) is located in the water inlet chamber (41) of the movable water tank (1); A sealing piston (510) is installed at the end of the lifting control lever (59).

5. A portable integrated water purification device suitable for rural areas according to claim 4, characterized in that: The axial flow check valve (5) includes a valve seat (51) which is fastened to the inlet of the movable water tank (1); The sealing surface (52) is provided on the valve seat (51); Valve cover (53) is installed on the inner wall of the water inlet chamber (41); The guide rod (54) is connected to the valve cover (53) in the direction of the valve seat (51); The valve disc (55) is connected to the guide rod (54) and forms a seal with the sealing surface (52) of the valve seat (51); A return spring (56) is disposed between the valve disc (55) and the valve cover (53); A permanent magnet (57) is embedded in the end face of the valve disc (55) facing the inlet. A repulsive magnetic block (58) is positioned on the top surface of the annular support plate (32) at the corresponding position.

6. A portable integrated water purification device suitable for rural areas according to claim 1, characterized in that: The purification unit (6) includes a purification chamber (61) which is located inside the mobile water tank (1); The filter element (62) is installed in the purification chamber (61); The water outlet (63) is located in the purification chamber (61) and is connected to the outside of the mobile water tank (1); Water supply connecting pipe (64) connects the purification chamber (61) and the water inlet chamber (41); A one-way flow guide valve (65) is installed in the water supply connecting pipe (64).

7. A portable integrated water purification device suitable for rural areas according to claim 2, characterized in that: The annular support plate (32) moves smoothly along the axial direction of the filter tube (21) under the action of the compression spring (33); The cleaning cover (35) is connected to the annular support plate (32) via a ball joint link (34) and moves along the outer surface of the cylindrical filter screen (22).

8. A portable integrated water purification device suitable for rural areas according to claim 3, characterized in that: When the annular limiting flange (37) contacts the annular baffle (38), the ball joint connecting rod (34) generates radial expansion motion; The radial expansion motion causes the cleaning housing (35) to change from axial movement to rotational movement around the axis of the cylindrical filter screen (22).

9. A portable integrated water purification device suitable for rural areas according to claim 5, characterized in that: The permanent magnet (57) and the repulsive magnetic block (58) generate a magnetic repulsion effect of the same polarity; The repulsive force drives the annular support plate (32) to move downward within the mounting cover (31).

10. A method of using a portable integrated water purification device suitable for rural areas, comprising using a portable integrated water purification device suitable for rural areas as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Pulling the control lever (59) drives the sealing piston (510) to move upward, forming a negative pressure to open the axial flow check valve (5). S2. External water enters the inlet chamber (41) through the cylindrical filter screen (22) to complete the initial filtration; S3. Pulling the control lever (59) causes the sealing piston (510) to move downward, and the valve disc (55) closes to cut off the water inlet channel; S4. The permanent magnet (57) and the repulsive magnetic block (58) generate a repulsive force, driving the self-cleaning mechanism (3) to work; S5. Clean the housing (35) by moving and rotating it along the cylindrical filter (22) to remove surface deposits; S6. Water in the inlet chamber (41) enters the purification unit (6) through the water supply connecting pipe (64); S7. After the water is deeply purified by the filter element (62), it is output through the outlet (63).

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