Rural direct drinking water treatment system

Abstract

The invention belongs to the technical field of water treatment, and discloses a rural direct drinking water treatment system which comprises a water storage tank and a pump body, a water level gauge is mounted at the top of the water storage tank, a filter assembly is mounted in the middle of a cavity of the water storage tank, the rural direct drinking water treatment system further comprises a pipeline communicated with the bottom of the water storage tank, and a tail end treatment assembly is arranged at one end of the pipeline. According to the scheme, the pump body is operated to pump well water into the water storage tank for accumulation, the well water can be preliminarily filtered by the filtering assembly in the water storage tank, and the well water is conveyed into the tail end treatment assembly through the pipeline; fine particle impurities in water are removed by the ultrafiltration membrane through the water inlet and the valve core hole in the pipeline and are conveyed into the disinfection cavity through the bent pipe, and finally, well water is pumped into the water storage tank by the pump body, so that water pressure is accumulated in the water storage tank, and the well water can penetrate through the filtering assembly and the ultrafiltration membrane to realize a filtering effect; the problem that the pump body is damaged due to direct pressure supply through the pump body is solved.

Description

Technical Field

[0001] This invention belongs to the field of water treatment technology, specifically a rural direct drinking water treatment system. Background Technology

[0002] In many rural areas, well water is a vital groundwater resource for rural residents, supporting their basic daily lives and production activities. However, geological activity causes the dissolution of natural minerals, resulting in raw well water often containing varying levels of suspended solids and microorganisms. Therefore, to ensure that the well water can be directly supplied to rural residents, it generally needs to be treated.

[0003] Typically, in the process of treating well water in rural areas, water is drawn from the well by a pump, pressurized, and then sent to a treatment tank for multi-stage filtration and disinfection before being directly supplied to rural residents. However, this method relies on the pump to pressurize the water source, making the pump the power source and the continuous operating pressure of the entire water supply system. When the filtration system in the tank becomes filled with a large amount of impurities, the pump's supply pressure will increase significantly, leading to a continuous increase in the pump's load. This can easily cause the pump to overheat or even be damaged, thus affecting the stable operation of the entire water supply system.

[0004] Therefore, in order to solve the above problems, a rural direct drinking water treatment system was proposed. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a rural direct drinking water treatment system that solves the problem that a large amount of impurities filling the filtration system can lead to a continuous increase in pump load, which can easily cause the pump to overheat or even be damaged.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rural direct drinking water treatment system, comprising a water storage tank and a pump body, wherein a water level gauge is installed on the top of the water storage tank, a filter assembly is installed in the middle of the water storage tank cavity, and further comprising: a pipe connected to the bottom of the water storage tank, wherein an end-of-pipe treatment assembly is provided at one end of the pipe; The end-of-line treatment assembly includes a valve body and a bent tube. A valve core rod is movably installed inside the valve body. A valve core hole is opened at the top of the valve core rod. An ultrafiltration membrane is installed in the valve core hole. The lower outer periphery of the valve core rod and the inner wall of the valve body form a disinfection chamber. A handle is rotatably connected to the top of the valve body. The bottom of the handle is threadedly connected to the top of the valve core rod. The valve body is provided with an inlet and an outlet at the top and bottom, respectively, which can communicate with the pipeline and the disinfection chamber. The inlet can communicate with one end of the bent pipe through the valve core hole, and the other end of the bent pipe can communicate with the disinfection chamber. The valve core rod can block the inlet and outlet when it moves upward. An ultraviolet lamp is installed on the valve body, and the lamp tube of the ultraviolet lamp can extend into the disinfection chamber.

[0007] Preferably, a partition plate located in the middle of the disinfection chamber is fixedly installed inside the valve body. The partition plate is movably sleeved on the outer periphery of the valve core rod. The bottom end of the bent pipe is connected to the cavity of the disinfection chamber above the partition plate, and the water outlet is connected to the cavity of the disinfection chamber below the partition plate. A limiting post is fixedly connected to the valve core rod, and the limiting post is movably sleeved on the partition plate.

[0008] Preferably, the inner diameter of the middle part of the valve core hole is larger than the inner diameters of its two ends.

[0009] Preferably, the valve body is equipped with a backwashing assembly for cleaning the ultrafiltration membrane.

[0010] Preferably, the backwash assembly includes a cylinder fixedly connected to a valve body, a spring piston with a tendency to move toward the valve body is movably installed inside the cylinder, a connecting pipe is fixedly connected to the cylinder, and the bottom end of the connecting pipe is connected to a bent pipe. One-way valve discs capable of unidirectional communication with the cylinder are evenly arranged in the connecting pipe. A drain port at the same height as the valve body is fixedly connected to the valve body. After the valve core hole moves upward to the top, its two ends can communicate with the cylinder and the drain port respectively. The valve core rod can seal the ends of the cylinder and the drain port.

[0011] Preferably, the piston end of the spring piston is fixedly connected to a rubber cylinder that can be fitted into and seal the constant pressure hole, and the rubber cylinder has an L-shaped channel.

[0012] Preferably, the filter assembly includes two sets of perforated plates fixed inside the water storage tank, each perforated plate having a connecting cylinder fixed to one side of its opposite side, a filter screen being disposed between the two perforated plates, and filler being filled between the filter screen and the outer periphery of the connecting cylinder.

[0013] Preferably, the filter assembly is further provided with a stirring mechanism; the stirring mechanism includes an annular component rotatably connected between two connecting cylinders, the annular component having a plurality of blades arranged in a ring around its outer periphery, the annular component having a plurality of guide grooves arranged in a ring around its inner periphery, the top of the guide grooves being a contraction section, a float being provided in the water storage tank floating above the perforated plate, a main shaft being fixedly connected to the bottom of the float, the lower middle part of the main shaft being sleeved in the connecting cylinders and the annular component, a connecting ring being fixedly connected to the outer periphery of the main shaft located below the annular component, a set of spring-loaded cams arranged in a symmetrical ring around the connecting ring, one end of the spring-loaded cams being able to slide within the guide grooves; The blade can extend into the packing, and the guide groove is provided with an inclined surface and a vertical surface, with the vertical surface adjacent to the inclined surface of the next set of guide grooves. The end of the spring cam is provided with an arc-shaped surface and a vertical surface. When the vertical surface is below the guide groove, the top of the vertical surface overlaps with the bottom of the inclined surface of the next set of guide grooves. The distance between the two arc-shaped surfaces can match the contraction section.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The above solution uses a pump to extract well water and pump it into a storage tank. The well water is initially filtered by a filter assembly in the storage tank and then transported to the end-of-pipe treatment unit through a pipeline. When residents draw water, they rotate the handle to drive the valve core rod downwards, allowing the pipeline to pass through the inlet and valve core holes. Fine particulate impurities in the water are removed by the ultrafiltration membrane and transported through a bend to the disinfection chamber. The ultraviolet lamps then quickly sterilize the treated water in the disinfection chamber before supplying it through the outlet. Ultimately, the pump pump delivers well water to the storage tank, accumulating water pressure that allows the well water to pass through the filter assembly and ultrafiltration membrane to achieve the filtration effect. This solves the problem that directly supplying pressure through the pump body would damage the pump body. The above scheme uses a bent pipe to create a pressure that causes water to bend in the pipe when it enters the disinfection chamber through the valve core hole and the bent pipe. This pressure creates a brief and intermittent high pressure, forcing some of the filtered well water to enter the cylinder through the one-way valve. At this time, the spring on the spring piston is compressed and stores energy. When the resident rotates the handle to block the outlet and inlet of the valve core, the two ends of the valve core hole are connected to the drain and the cylinder, respectively. The spring piston then pushes the water stored in the cylinder into the valve core hole and backwashes the ultrafiltration membrane. Impurities on the ultrafiltration membrane's filtration side are discharged through the drain, preventing the long-term accumulation of small particles. When the water level in the storage tank is detected to be too low by the water level gauge, the pump body will pump well water into the storage tank. At this time, the float will rise and drive the connecting ring and the spring cam to move upward under the limit of the connecting cylinder. The arc surface will move upward along the bottom of the inclined surface of the next set of circular parts, thereby forcing the circular parts to rotate and driving the blade to rotate in the packing, thus realizing a small-amplitude agitation of the packing and avoiding large suspended particles from being on the same height plane in the packing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a frontal perspective view of the present invention; Figure 3 This is a front cross-sectional view of the valve body of the present invention; Figure 4This is a front cross-sectional view of the valve core rod of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the backwashing assembly of the present invention; Figure 7 This is a front cross-sectional view of the filter assembly of the present invention; Figure 8 This is a schematic diagram of the main shaft of the present invention; Figure 9 This is a cross-sectional view of the annular component of the present invention; Figure 10 for Figure 9 Enlarged view of point B in the middle.

[0016] In the diagram: 1. Water storage tank; 11. Water level gauge; 12. Pipeline; 2. Pump body; 3. Filter assembly; 31. Perforated plate; 32. Connecting cylinder; 33. Filter screen; 34. Packing material; 4. End-of-pipe treatment assembly; 41. Valve body; 411. Inlet; 412. Outlet; 413. Baffle plate; 42. Valve core rod; 421. Limiting post; 43. Valve core hole; 44. Ultrafiltration membrane; 45. Bend; 46. Disinfection chamber; 47. Handle; 5. Backwash assembly; 51. Cylinder; 511. Constant pressure orifice; 52. Spring piston; 521. Rubber cylinder; 522. L-shaped channel; 53. Drain outlet; 54. Connecting pipe; 55. One-way valve disc; 6. Stirring mechanism; 61. Circular ring; 62. Blade; 63. Guide groove; 64. Contraction section; 65. Float; 66. Main shaft; 67. Connecting ring; 68. Spring cam; 681. Arc-shaped surface; 682. Vertical surface; 7. Ultraviolet lamp. Detailed Implementation

[0017] 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.

[0018] like Figures 1 to 10 As shown, the present invention provides a rural direct drinking water treatment system, including a water storage tank 1 and a pump body 2. A water level gauge 11 is installed on the top of the water storage tank 1, and a filter assembly 3 is installed in the middle of the cavity of the water storage tank 1. The system also includes a pipe 12 connected to the bottom of the water storage tank 1, and an end-of-pipe treatment assembly 4 is provided at one end of the pipe 12. The end-of-line treatment component 4 includes a valve body 41 and a bent tube 45. A valve core rod 42 is movably installed inside the valve body 41. A valve core hole 43 is opened at the top of the valve core rod 42. An ultrafiltration membrane 44 is installed in the valve core hole 43. The lower outer periphery of the valve core rod 42 and the inner wall of the valve body 41 form a disinfection chamber 46. A handle 47 is rotatably connected to the top of the valve body 41. The bottom of the handle 47 is threadedly connected to the top of the valve core rod 42. The valve body 41 is provided with an inlet 411 and an outlet 412 at the top and bottom, respectively, which can communicate with the pipe 12 and the disinfection chamber 46. The inlet 411 can communicate with one end of the bent pipe 45 through the valve core hole 43, and the other end of the bent pipe 45 can communicate with the disinfection chamber 46. The valve core rod 42 can block the inlet 411 and the outlet 412 when it moves upward. An ultraviolet lamp 7 is installed on the valve body 41, and the lamp tube of the ultraviolet lamp 7 can extend into the disinfection chamber 46. A partition 413 located in the middle of the disinfection chamber 46 is fixedly installed inside the valve body 41. The partition 413 is movably sleeved on the outer periphery of the valve core rod 42. The bottom end of the bent pipe 45 is connected to the upper part of the disinfection chamber 46 of the partition 413, and the outlet 412 is connected to the lower part of the disinfection chamber 46 of the partition 413. A limiting post 421 is fixedly connected to the valve core rod 42, and the limiting post 421 is movably sleeved on the partition 413. The inner diameter of the middle part of the valve core hole 43 is larger than the inner diameters of its two ends; Using the above scheme, well water is drawn from the pump body 2 and pumped to the storage tank 1 for storage. The well water is initially filtered by the filter assembly 3 in the storage tank 1 and then transported to the end treatment assembly 4 through the pipeline 12. When residents draw water, they rotate the handle 47 to drive the valve core rod 42 downward, so that the pipeline 12 passes through the inlet 411 and the valve core hole 43, and the ultrafiltration membrane 44 removes fine particulate impurities from the water. The water is then transported to the disinfection chamber 46 through the bend pipe 45. The ultraviolet lamp 7 is used to quickly sterilize the water source treated in the disinfection chamber 46 and then supply it through the outlet 412. Finally, the pump body 2 pumps well water to the storage tank 1, and the water pressure accumulated in the storage tank 1 allows the well water to pass through the filter assembly 3 and the ultrafiltration membrane 44 to achieve the filtration effect. This solves the problem that directly supplying pressure through the pump body 2 will damage the pump body 2.

[0019] like Figures 1-6As shown, a backwashing assembly 5 for cleaning the ultrafiltration membrane 44 is installed on the valve body 41. The backwashing assembly 5 includes a cylinder 51 fixedly connected to the valve body 41. A spring piston 52 with a tendency to move toward the valve body 41 is movably installed inside the cylinder 51. A connecting pipe 54 is fixedly connected to the cylinder 51, and the bottom end of the connecting pipe 54 is connected to a bent pipe 45. One-way valve discs 55 that can communicate with the cylinder 51 in one direction are evenly arranged in the connecting pipe 54. A drain port 53 at the same height as the valve body 41 is fixedly connected to the valve body 41. After the valve core hole 43 moves to the top, its two ends can communicate with the cylinder 51 and the drain port 53 respectively. The valve core rod 42 can seal the ends of the cylinder 51 and the drain port 53. Using the above scheme, the bent pipe 45 is arranged in a bent shape, so that when the water source enters the disinfection chamber 46 through the valve core hole 43 and the bent pipe 45, it will impact the bend of the bent pipe 45, causing a brief and intermittent high pressure inside, and forcing some of the filtered well water to enter the cylinder 51 for storage through the one-way valve disc 55. At this time, the spring on the spring piston 52 will be compressed and stored. When the resident rotates the handle 47 to drive the valve core rod 42 to block the outlet 412 and the inlet 411, the two ends of the valve core hole 43 are connected to the drain port 53 and the cylinder 51 respectively. At this time, the spring piston 52 will push the water source stored in the cylinder 51 into the valve core hole 43 and backwash the ultrafiltration membrane 44. The impurities on the filtration side of the ultrafiltration membrane 44 will be discharged out through the drain port 53, avoiding the long-term accumulation of small particulate impurities.

[0020] like Figure 5 and Figure 6 As shown, the piston end of the spring piston 52 is fixedly connected to the back liquid surface with a rubber cylinder 521 that can be fitted into and seal the constant pressure hole 511. An L-shaped channel 522 is provided on the rubber cylinder 521. By adopting the above scheme, the rubber column 521 is set so that when well water is accumulated inside the cylinder 51, the rubber column 521 will gradually block the constant pressure hole 511. At the same time, the gas between the outer periphery of the spring piston 52 and the inner wall of the cylinder 51 will be discharged outward through the L-shaped channel 522. When the well water in the cylinder 51 needs to be discharged, the gas will enter the constant pressure hole 511 through the L-shaped channel 522, which will limit the pushing speed of the spring piston 52. When the rubber column 521 is disengaged from the constant pressure hole 511, the spring piston 52 will rebound quickly, thereby quickly pushing out the well water in the cylinder 51, thus achieving a good backwashing effect on the ultrafiltration membrane 44.

[0021] like Figure 2 and Figures 7-10 As shown, the filter assembly 3 includes two sets of perforated plates 31 fixed in the water storage tank 1. A connecting cylinder 32 is fixed to each side of the perforated plate 31. A filter screen 33 is provided between the two perforated plates 31. The filter screen 33 and the outer periphery of the connecting cylinder 32 are filled with filler 34. The filter assembly 3 is also provided with a stirring mechanism 6; the stirring mechanism 6 includes a ring 61 rotatably connected between two connecting cylinders 32, a number of blades 62 are arranged in a ring around the outer periphery of the ring 61, a number of guide grooves 63 are arranged in a ring inside the ring 61, the top of the guide grooves 63 is a contraction part 64, a float 65 is provided in the water storage tank 1 floating above the perforated plate 31, a main shaft 66 is fixedly connected to the bottom of the float 65, the middle and lower part of the main shaft 66 is sleeved in the connecting cylinders 32 and the ring 61, a connecting ring 67 located below the ring 61 is fixedly connected to the outer periphery of the main shaft 66, a set of spring-loaded cams 68 are arranged in a ring in a symmetrical direction on the connecting ring 67, one end of the spring-loaded cam 68 can slide in the guide groove 63; The blade 62 can extend into the packing 34. The guide groove 63 is provided with an inclined surface and a vertical surface, and the vertical surface is adjacent to the inclined surface of the next set of guide grooves 63. The end of the spring cam 68 is provided with an arc-shaped surface 681 and a vertical surface 682. When the vertical surface 682 is below the guide groove 63, the top of the vertical surface 682 overlaps with the bottom of the inclined surface of the next set of guide grooves 63. The distance between the two arc-shaped surfaces 681 can match the contraction part 64. Using the above scheme, when the water level in the water storage tank 1 is detected to be too low by the water level gauge 11, the pump body 2 will pump well water into the water storage tank 1. At this time, the float 65 will float up and drive the connecting ring 67 and the spring cam 68 to move upward under the limit of the connecting cylinder 32. The arc surface 681 will move upward along the bottom of the inclined surface of the next set of circular rings 61, thereby forcing the circular rings 61 to rotate and drive the blades 62 to rotate in the packing 34, thereby achieving a small-amplitude agitation of the packing 34 and preventing large suspended particles from being on the same height plane in the packing 34. It is worth noting that when the mainspring cam 68 moves upward into the contraction section 64, the two arc-shaped surfaces 681 will contact the two vertical surfaces on the contraction section 64 respectively, thereby ensuring that when the mainspring cam 68 moves downward and is deflected by its own elastic force, the top of the vertical surface 682 can be below the inclined part of the next mainspring cam 68.

[0022] Working principle and usage process of this invention: First, the well water is pumped into the storage tank 1 by the pump body 2. The well water is initially filtered by the filter assembly 3 in the storage tank 1 and then transported to the end treatment assembly 4 through the pipeline 12. When residents draw water, the valve core rod 42 is driven down by rotating the handle 47. This allows the pipeline 12 to pass through the inlet 411 and the valve core hole 43, where the ultrafiltration membrane 44 removes fine particulate impurities from the water and transports it to the disinfection chamber 46 through the bend pipe 45. Then, the ultraviolet lamp 7 is used to quickly sterilize the water in the disinfection chamber 46, so that the water is finally supplied through the outlet 412. By pumping the well water into the storage tank 1 by the pump body 2, the water pressure accumulated in the storage tank 1 allows the well water to pass through the filter assembly 3 and the ultrafiltration membrane 44 to achieve the filtration effect. When well water enters the bend pipe 45, due to the bend pipe 45 being set in a bent shape, when the water source enters the disinfection chamber 46 through the valve core hole 43 and the bend pipe 45, it will impact the bend of the bend pipe 45. At this time, a brief and intermittent high pressure will be generated in the bend pipe 45, thereby forcing some of the filtered well water to enter the cylinder 51 for storage through the one-way valve disc 55. At this time, the spring on the spring piston 52 will be compressed and stored. When the resident rotates the handle 47 to drive the valve core rod 42 to block the outlet 412 and the inlet 411, the two ends of the valve core hole 43 are connected to the drain port 53 and the cylinder 51 respectively. At this time, the spring piston 52 will push the water source stored in the cylinder 51 into the valve core hole 43 and backwash the ultrafiltration membrane 44. The impurities on the filtration side of the ultrafiltration membrane 44 will be discharged out through the drain port 53. When the water level gauge 11 detects that the water level in the water storage tank 1 is too low, the pump body 2 will pump well water into the water storage tank 1. At this time, the float 65 will rise and drive the connecting ring 67 and the spring cam 68 to move upward under the limit of the connecting cylinder 32. The arc surface 681 will move upward along the bottom of the inclined surface of the next set of circular rings 61, thereby forcing the circular rings 61 to rotate and drive the blades 62 to rotate in the packing 34, thereby achieving a small-amplitude agitation of the packing 34 and preventing large suspended particles from being on the same height plane in the packing 34.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rural direct drinking water treatment system, comprising a water storage tank (1) and a pump body (2), wherein a water level gauge (11) is installed on the top of the water storage tank (1), and a filter assembly (3) is installed in the middle of the cavity of the water storage tank (1), characterized in that, Also includes: A pipe (12) is connected to the bottom of the water storage tank (1), and an end-of-pipe treatment component (4) is provided at one end of the pipe (12). The end-processing component (4) includes a valve body (41) and a bent tube (45). A valve core rod (42) is movably installed inside the valve body (41). A valve core hole (43) is opened at the top of the valve core rod (42). An ultrafiltration membrane (44) is installed inside the valve core hole (43). The lower outer periphery of the valve core rod (42) and the inner wall of the valve body (41) form a disinfection chamber (46). A handle (47) is rotatably connected to the top of the valve body (41). The bottom of the handle (47) is threadedly connected to the top of the valve core rod (42). The valve body (41) is provided with an inlet (411) and an outlet (412) at the top and bottom respectively, which can communicate with the pipe (12) and the disinfection chamber (46). The inlet (411) can communicate with one end of the bent pipe (45) through the valve core hole (43), and the other end of the bent pipe (45) can communicate with the disinfection chamber (46). The valve core rod (42) can block the inlet (411) and outlet (412) when it moves upward. An ultraviolet lamp (7) is installed on the valve body (41), and the lamp tube of the ultraviolet lamp (7) can extend into the disinfection chamber (46).

2. The rural direct drinking water treatment system according to claim 1, characterized in that: A partition (413) located in the middle of the disinfection chamber (46) is fixedly installed inside the valve body (41). The partition (413) is movably sleeved on the outer periphery of the valve core rod (42). The bottom end of the bent pipe (45) is connected to the cavity of the disinfection chamber (46) above the partition (413). The outlet (412) is connected to the cavity of the disinfection chamber (46) below the partition (413). A limiting post (421) is fixedly connected to the valve core rod (42), and the limiting post (421) is movably sleeved on the partition plate (413).

3. The rural direct drinking water treatment system according to claim 1, characterized in that: The inner diameter of the middle part of the valve core hole (43) is larger than the inner diameters of its two ends.

4. The rural direct drinking water treatment system according to claim 1, characterized in that: The valve body (41) is equipped with a backwashing assembly (5) for cleaning the ultrafiltration membrane (44).

5. The rural direct drinking water treatment system according to claim 4, characterized in that: The backwash assembly (5) includes a cylinder (51) fixedly connected to the valve body (41). A spring piston (52) with a tendency to move toward the valve body (41) is movably installed inside the cylinder (51). A connecting pipe (54) is fixedly connected to the cylinder (51), and the bottom end of the connecting pipe (54) is connected to a bent pipe (45). One-way valve discs (55) that can communicate with the cylinder (51) are evenly arranged in the connecting pipe (54). A drain port (53) at the same height as the valve body (41) is fixedly connected to the valve body (41). After the valve core hole (43) moves up to the top, its two ends can communicate with the cylinder (51) and the drain port (53) respectively. The valve core rod (42) can seal the ends of the cylinder (51) and the drain port (53).

6. The rural direct drinking water treatment system according to claim 5, characterized in that: The piston end of the spring piston (52) is fixedly connected to the back liquid surface and is a rubber cylinder (521) that can be fitted into the constant pressure hole (511) and seal it. An L-shaped channel (522) is provided on the rubber cylinder (521).

7. The rural direct drinking water treatment system according to claim 1, characterized in that: The filter assembly (3) includes two sets of perforated plates (31) fixed in the water storage tank (1). Each perforated plate (31) has a connecting cylinder (32) fixed on one side of the opposite side. A filter screen (33) is provided between the two perforated plates (31). The filter screen (33) and the outer periphery of the connecting cylinder (32) are filled with filler (34).

8. The rural direct drinking water treatment system according to claim 7, characterized in that: The filter assembly (3) is also provided with a stirring mechanism (6); The stirring mechanism (6) includes an annular component (61) rotatably connected between two connecting cylinders (32). The annular component (61) has several blades (62) arranged in annular array on its outer periphery. The annular component (61) has several guide grooves (63) arranged in annular array inside its inner periphery. The top of the guide grooves (63) is a contraction part (64). The water storage tank (1) is provided with a float (65) floating above the perforated plate (31). The bottom of the float (65) is fixedly connected to a main shaft (66). The middle and lower part of the main shaft (66) is sleeved in the connecting cylinders (32) and the annular component (61). The outer periphery of the main shaft (66) is fixedly connected to a connecting ring (67) located below the annular component (61). A set of spring-loaded cams (68) are arranged in annular array in a symmetrical direction on the connecting ring (67). One end of the spring-loaded cam (68) can slide in the guide groove (63). The blade (62) can extend into the filler (34), and the guide groove (63) is provided with an inclined surface and a vertical surface, the vertical surface being adjacent to the inclined surface of the next set of guide grooves (63); The end of the spring cam (68) is provided with an arc-shaped surface (681) and a vertical surface (682). When the vertical surface (682) is below the guide groove (63), the top of the vertical surface (682) overlaps with the bottom of the inclined surface of the next set of guide grooves (63). The distance between the two arcuate surfaces (681) can match the contraction portion (64).

Images