Active rotary spraying type filter element self-cleaning water purifier

Abstract

The invention relates to an active rotary spraying type filter element self-cleaning water purifier, which is water purification equipment which is used for a rural small tap water station and is used for automatically cleaning a filter element in a manner of spraying fan-shaped high-pressure water flow by a fan-shaped nozzle in active rotary motion, and the equipment mainly comprises three parts, namely a main frame, a water purification device and a rotary spraying device, the automatic cleaning device has the following characteristics: (1) the stainless steel cylinder filter element is automatically cleaned in an active spraying manner, so that the time cost and the labor cost for manually dismounting, washing and mounting the filter element can be reduced; (2) a plurality of fan-shaped nozzles in the rotary spraying device can perform bypassing motion along with a spray head bent pipe and a spray head straight pipe when spraying operation is performed on the surface filter screen of the stainless steel cylindrical filter element, so that the surface filter screen of the stainless steel cylindrical filter element is sprayed and cleaned in all directions; and (3) a plurality of groups of stainless steel cylinder filter elements are arranged in the water purifying device, so that the water purifying efficiency is high.

Description

Technical Field

[0001] The present invention relates to the field of water treatment equipment machinery, and is a water treatment equipment used in small rural water supply stations and capable of automatically cleaning filter cartridges, an active rotary spray filter cartridge self-cleaning water purifier, a water treatment equipment that uses mechanical transmission to make a nozzle rotate around a filter cartridge while spraying a high-speed fan-shaped water flow, and uses active spraying to automatically clean the filter cartridge. Background Art

[0002] Rural drinking water safety is an important guarantee for the health of farmers. As of the end of 2023, a total of 5.63 million rural water supply projects have been built across the country, providing drinking water security for 870 million rural people.

[0003] The penetration rate of tap water in rural areas has reached 90%. Basically, each administrative village has built a tap water station according to its own geographical conditions and resource conditions. Villages along the river will build a water tower by the river, take water from the river dam and send it to the water tower for storage after filtering. Villages on the mountain will build ponds on high terrain to store water, and then send it to the water tower for storage after filtering. However, this water-taking method has a high impurity content in the water, especially in the dry season or rainy season, the sediment content seriously exceeds the standard, and the water purifier filter of the water station will be blocked and fail in a short time. Manual cleaning and maintenance are time-consuming and labor-intensive. If cleaning and maintenance are not carried out in time, water outages will occur, affecting the normal water use of villagers. Therefore, the invention of a water purification equipment that can realize automatic cleaning of the filter element for small rural tap water stations is of great significance to improving the rural water use environment. Summary of the invention

[0004] An active rotary spray filter element self-cleaning water purifier is a mechanical device that filters and purifies tap water entering a water tower, especially a water purification device used in small rural tap water stations that can automatically clean the filter element by high-pressure spraying. The device is mainly composed of three parts: a main frame, a water purification device and a rotary spray device. Figure 1 shown.

[0005] The main frame of the active rotary spray filter element self-cleaning water purifier is welded and installed by a cylindrical bracket and a right stand, and is a supporting and mounting structural member for the water purification device and the rotary spray device. Figure 1 , Fig.16 shown.

[0006] The water purification device of the active rotary spray filter element self-cleaning water purifier is a filter tank body installed horizontally on the cylindrical bracket of the main frame, the tank body water inlet pipe is welded and installed at the upper opening of the filter tank body, and an inlet pipe electric valve is installed between the tank body water inlet pipe and the water inlet pipe joint to form a pipeline on-off control connection, the tank body drain pipe is welded and installed at the lower opening of the filter tank body, and a drain pipe electric valve is installed between the tank body drain pipe and the sewage pipe to form a pipeline on-off control connection, the left side of the tank body The sealing gasket, the filter element mounting plate and the left cavity cover of the tank body are sequentially installed on the left annular mounting plate of the filter tank body and are fastened by bolts. A water purification flange pipe is welded and installed at the central opening. The right side sealing gasket of the tank body and the right cavity cover of the tank body are installed in sequence on the annular mounting plate on the right side of the filter tank body and are fastened by bolts. A rotary shaft flange pipe is welded and installed at the central opening of the right cavity cover of the tank body. A sealing ring A is installed in the sealing groove of the axial hole of the rotary shaft flange pipe. Several filter element mounting rods are welded and installed through the filter element rod mounting holes on the filter element mounting plate. Filter element sealing gasket A, stainless steel cylindrical filter element, filter element sealing gasket B and filter element end cover are installed in sequence on each filter element mounting rod on one side of the filter element positioning recessed hole on the filter element mounting plate, and are fastened to the filter element mounting rod by nuts, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig. 9 , Fig.10 , Fig.11 shown.

[0007] The rotary spray device of the active rotary spray filter element self-cleaning water purifier is characterized in that a tabletop sub-frame is installed on the right tabletop of the main frame, and a sealing shaft seat, a bearing seat A and a bearing seat B are fixedly installed on the panel of the tabletop sub-frame from right to left in sequence, and the tubular stepped rotary shaft passes through the axial hole of the bearing seat A, the axial hole of the bearing seat B and the axial hole of the rotary shaft flange tube in sequence, and the right end of the tubular stepped rotary shaft is inserted and installed in the axial hole of the sealing shaft seat and forms a rotary sealing connection through the sealing ring B, and the tubular stepped rotary shaft and the axial hole of the rotary shaft flange tube form a rotary sealing connection through the sealing ring A, a driven gear is installed on the shaft shoulder of the tubular stepped rotary shaft between the bearing seat A and the bearing seat B, and a multi-channel diverter plate is installed on the left end of the tubular stepped rotary shaft, and the multi-channel diverter plate side A number of nozzle curved tubes are installed on the threaded holes of the surface passage, and a number of fan-shaped nozzles are installed on the radial inner side of each nozzle curved tube. A nozzle straight tube is installed on the threaded holes of the end passage of the multi-channel manifold, and a number of fan-shaped nozzles are installed on the radial outer side of the nozzle straight tube. The water inlet of the sealing shaft seat is connected to the pump water joint through pipe threads. A high-pressure water pump is fixedly installed at the bottom of the right stand of the main frame. The water inlet of the high-pressure water pump is connected to the water pump suction pipe, and the water pressure port of the high-pressure water pump is connected to the water pump pressure water pipe. The water inlet of the pump water joint and the water pump pressure water pipe form a pipeline on-off control connection through the pump water pipe electric valve. The reduction motor is fixedly installed on the panel of the table sub-frame through the motor mounting seat. A driving gear is installed on the output shaft of the reduction motor. The driving gear and the driven gear form a gear meshing transmission, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig.12 , Fig.13 shown.

[0008] As a further optimization of this solution, the filter element mounting plate in the water purification device is evenly distributed with water permeable holes, filter element rod mounting holes and filter element positioning recessed holes. The water filtered and purified by the stainless steel cylindrical filter element can enter the left cavity cover cavity of the tank body through the water permeable holes and then be discharged through the water purification flange pipe. The filter element positioning recessed holes can assist the stainless steel cylindrical filter element in accurately positioning during the installation process. Fig.11 , Fig.15 shown.

[0009] As a further optimization of this solution, the axes of the several fan-shaped nozzles on the curved tube of the spray head in the rotary spray device are staggered at a certain angle to the surface where the rotary axis is located, and the several fan-shaped nozzles on the straight tube of the spray head are all facing the stainless steel cylindrical filter element. When the stainless steel cylindrical filter element is sprayed and cleaned, the fan-shaped water flow sprayed by each fan-shaped nozzle can be directed to the filter surface of the stainless steel cylindrical filter element in different directions, such as Figure 7 , Fig. 9 , Fig.10 , Fig.12 shown.

[0010] As a further optimization of this scheme, the tubular stepped rotating shaft and the shaft hole of the driven gear in the rotary spray device are formed as a whole through interference fit. The tubular stepped rotating shaft and the driven gear can be driven by the meshing of the driving gear installed on the output shaft of the reduction motor to perform a rotary motion, thereby driving the multi-channel diverter plate installed on the left end of the tubular stepped rotating shaft to perform a rotary motion. The nozzle curved tube and the nozzle straight tube respectively make a circumferential motion on the outside and inside of the stainless steel cylindrical filter element, so that the fan-shaped water flow sprayed by the fan-shaped nozzle can perform a surrounding spray cleaning operation on the stainless steel cylindrical filter element. Figure 7 , Fig. 9 , Fig.12 , Fig.13 shown.

[0011] As a further optimization of this scheme, the water inlet pipe electric valve in the water purification device is a normally open valve, the drain pipe electric valve is a normally closed valve, and the pump water pipe electric valve in the rotary spray device is a normally closed valve. When the water inlet pipe electric valve, the drain pipe electric valve and the pump water pipe electric valve are all in normal state, the water to be purified enters the water purification device from the water inlet pipe joint through the pipeline, flows out from the water purification flange pipe after filtration, and enters the water storage tower through the pipeline for storage, thereby realizing the water purification function. When the stainless steel cylindrical filter element in the water purification device is blocked and the water purification capacity is seriously reduced, the water inlet pipe electric valve is closed, and the drain pipe electric valve and the pump water pipe electric valve are opened. Under the action of the rotary spray device, the stainless steel cylindrical filter element in the water purification device is automatically sprayed and cleaned, and the sewage containing mud and impurities is discharged from the sewage pipe at the bottom of the water purification device. Figure 7 , Fig. 9 , Fig.10 shown.

[0012] An active rotary spray filter element self-cleaning water purifier has the following advantages: ① The present invention adopts active spraying to automatically clean the stainless steel cylindrical filter element, which can reduce the time cost and labor cost of manually disassembling and installing the filter element; ② When the rotary spray device of the present invention performs a spraying operation on the filter screen on the surface of the stainless steel cylindrical filter element, the plurality of fan-shaped nozzles will move around with the nozzle curved tube and the nozzle straight tube when spraying the filter screen on the surface of the stainless steel cylindrical filter element, and perform a full-range spray cleaning on the filter screen on the surface of the stainless steel cylindrical filter element; ③ The water purification device of the present invention is equipped with multiple groups of stainless steel cylindrical filter elements, and the water purification efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described in detail below in conjunction with the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a left front axonometric view of the overall structure of the present invention; Figure 3 It is a right front axonometric view of the overall structure of the present invention; Figure 4 is a right rear axonometric view of the overall structure of the present invention; Figure 5 It is a left rear axonometric view of the overall structure of the present invention; Figure 6 It is a front view of the overall structure of the present invention; Figure 7 It is a full cross-sectional front view of the overall structure of the present invention; Figure 8 It is a right side view of the overall structure of the present invention; Fig. 9 is a three-dimensional cross-sectional view of the water purification device of the present invention in the right front direction; Fig.10 is a three-dimensional cross-sectional view of the water purification device of the present invention in the left front direction; Fig.11 is a three-dimensional cross-sectional view of the installation of the filter element of the present invention; Fig.12 is an axonometric view of the rotary spraying device of the present invention; Fig.13 is a three-dimensional cross-sectional view of the rotary spray device of the present invention; Fig.14 It is an axonometric view of the filter tank structure of the present invention; Fig.15 is an axonometric view of a filter element mounting plate of the present invention; Fig.16 It is an axonometric view of the main frame of the present invention.

[0014] Names of marks in the drawings of the specification: 101 main frame, 102 cylindrical bracket, 103 right stand, 200 water purification device, 201 filter tank, 202 tank water inlet pipe, 203 tank drain pipe, 204 water inlet pipe electric valve, 205 drain pipe electric valve, 206 tank left sealing gasket, 207 tank right sealing gasket, 208 filter element mounting plate, 2081 water permeable hole, 2082 filter element rod mounting hole, 2083 filter element positioning recessed hole, 209 tank left cavity cover, 210 water purification flange pipe, 211 tank right cavity cover, 212 rotary shaft flange pipe, 213 sealing ring A, 214 filter element mounting rod, 215 stainless steel cylindrical filter element, 216 filter element sealing gasket A, 217 filter element sealing gasket B, 218 filter element end cover, 219 water inlet pipe joint, 220 sewage pipe, 300 rotary spray device, 301 table sub-frame, 302 sealing shaft seat, 303 tubular stepped rotary shaft, 304 sealing ring B, 305 bearing seat A, 306 bearing seat B, 307 driven gear, 308 multi-channel manifold, 309 nozzle curved pipe, 310 nozzle straight pipe, 311 fan-shaped nozzle, 312 motor mounting seat, 313 reduction motor, 314 driving gear, 315 high-pressure water pump, 316 water pump pressure pipe, 317 pump water pipe electric valve, 318 pump water joint, 319 water pump suction pipe. DETAILED DESCRIPTION

[0015] An active rotary spray filter element self-cleaning water purifier is a mechanical device for filtering and purifying tap water entering a water tower. The device is characterized in that: the device is a water purification device used in small rural tap water stations and can automatically clean the filter element by high-pressure spraying. The device mainly consists of three parts: a main frame 101, a water purification device 200 and a rotary spray device 300. Figure 1 shown.

[0016] The main frame 101 of the present invention is formed by welding and assembling a cylindrical support 102 and a right stand 103, and is a supporting and mounting structural member for the water purification device 200 and the rotary spray device 300. Figure 1 , Fig.16 shown.

[0017] The water purification device 200 of the present invention is a filter tank body 201 installed horizontally on the cylindrical bracket 102 of the main frame 101, the tank body water inlet pipe 202 is welded and installed at the upper opening of the filter tank body 201, and an inlet pipe electric valve 204 is installed between the tank body water inlet pipe 202 and the water inlet pipe joint 219 to form a pipeline on-off control connection, a tank body drain pipe 203 is welded and installed at the lower opening of the filter tank body 201, and a drain pipe electric valve 205 is installed between the tank body drain pipe 203 and the sewage pipe 220 to form a pipeline on-off control connection, and the left side sealing gasket 206 of the tank body, the filter element mounting plate 208 and the left cavity cover 209 of the tank body are sequentially installed on the left annular mounting plate of the filter tank body 201 and are fastened by bolts, and the central opening of the left cavity cover 209 of the tank body is welded and installed There is a water purification flange pipe 210, and the right side sealing gasket 207 of the tank body and the right cavity cover 211 of the tank body are installed in sequence on the annular installation plate on the right side of the filter tank body 201 and are fastened by bolts. A rotating shaft flange pipe 212 is welded and installed at the central opening of the right cavity cover 211 of the tank body, and a sealing ring A213 is installed in the sealing groove of the shaft hole of the rotating shaft flange pipe 212. A plurality of filter element mounting rods 214 are welded and installed through each filter element rod mounting hole 2082 on the filter element mounting plate 208. A filter element sealing gasket A216, a stainless steel cylindrical filter element 215, a filter element sealing gasket B217 and a filter element end cover 218 are installed in sequence on each filter element mounting rod 214 on one side of the filter element positioning recessed hole 2083 on the filter element mounting plate 208, and are fastened to the filter element mounting rod 214 by nuts, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig. 9 , Fig.10 , Fig.11 shown.

[0018] The rotary spray device 300 of the present invention is a table sub-frame 301 installed on the right table 103 of the main frame 101, and the sealing shaft seat 302, the bearing seat A305 and the bearing seat B306 are fixedly installed on the panel of the table sub-frame 301 from right to left in sequence, and the tubular stepped rotary shaft 303 passes through the shaft hole of the bearing seat A305, the shaft hole of the bearing seat B306 and the shaft hole of the rotary shaft flange pipe 212 in sequence, and the right end of the tubular stepped rotary shaft 303 is inserted into the sealing shaft 302 and installed in the sealing shaft 302. The shaft hole of the shaft seat 302 is connected in a rotary seal through a sealing ring B304, the tubular stepped rotary shaft 303 and the shaft hole of the rotary shaft flange tube 212 are connected in a rotary seal through a sealing ring A213, a driven gear 307 is installed on the shaft shoulder of the tubular stepped rotary shaft 303 between the bearing seat A305 and the bearing seat B306, a multi-channel diverter plate 308 is installed on the left end of the tubular stepped rotary shaft 303, and several threaded holes on the side channels of the multi-channel diverter plate 308 are installed. The dry nozzle curved tube 309, each nozzle curved tube 309 is installed with a plurality of fan-shaped nozzles 311 on the radial inner side, a nozzle straight tube 310 is installed on the threaded hole of the end passage of the multi-channel manifold 308, and a plurality of fan-shaped nozzles 311 are installed on the radial outer side of the nozzle straight tube 310, the water inlet of the sealing shaft seat 302 is connected to the pump water joint 318 through a pipe thread, and a high-pressure water pump 315 is fixedly installed at the bottom of the right stand 103 of the main frame 101, and the water inlet of the high-pressure water pump 315 is connected to the water inlet of the high-pressure water pump 315. The water pump suction pipe 319 is connected, the water pressure port of the high-pressure water pump 315 is connected to the water pump pressure water pipe 316, the water inlet of the pump water joint 318 and the water pump pressure water pipe 316 are connected through the pump water pipe electric valve 317 to form a pipeline on-off control connection, the reduction motor 313 is fixedly installed on the panel of the table sub-frame 301 through the motor mounting seat 312, and the driving gear 314 is installed on the output shaft of the reduction motor 313, and the driving gear 314 and the driven gear 307 form a gear meshing transmission, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig.12 , Fig.13 shown.

[0019] The filter element mounting plate 208 in the water purification device 200 of the present invention is evenly distributed with water permeable holes 2081, filter element rod mounting holes 2082 and filter element positioning recessed holes 2083 in an annular manner. The water filtered and purified by the stainless steel cylindrical filter element 215 can enter the cavity of the left chamber cover 209 of the tank body through the water permeable holes 2081, and then be discharged through the water purification flange pipe 210. The filter element positioning recessed holes 2083 can assist the stainless steel cylindrical filter element 215 in accurately positioning during the installation process. Fig.11 , Fig.15 shown.

[0020] The axes of the plurality of fan-shaped nozzles 311 on the nozzle curved tube 309 in the rotary spray device 300 of the present invention are staggered at a certain angle to the plane where the rotation axis is located. The plurality of fan-shaped nozzles 311 on the nozzle straight tube 310 are all facing the stainless steel cylindrical filter element 215. When the stainless steel cylindrical filter element 215 is sprayed and cleaned, the fan-shaped water flows sprayed by the fan-shaped nozzles 311 can be directed toward the filter screen surface of the stainless steel cylindrical filter element 215 in different directions, such as Figure 7 , Fig. 9 , Fig.10 , Fig.12 shown.

[0021] The tubular stepped rotating shaft 303 and the shaft hole of the driven gear 307 in the rotary spray device 300 of the present invention are formed as a whole through interference fit. The tubular stepped rotating shaft 303 and the driven gear 307 can be driven by the meshing of the driving gear 314 installed on the output shaft of the reduction motor 313 to perform a rotary motion, thereby driving the multi-channel diverter plate 308 installed on the left end of the tubular stepped rotating shaft 303 to perform a rotary motion. The nozzle curved tube 309 and the nozzle straight tube 310 respectively make a circumferential motion on the outer side and the inner side of the stainless steel cylindrical filter element 215, so that the fan-shaped water flow sprayed by the fan-shaped nozzle 311 can perform a surrounding spray cleaning operation on the stainless steel cylindrical filter element 215, such as Figure 7 , Fig. 9 , Fig.12 , Fig.13 shown.

[0022] The water inlet pipe electric valve 204 in the water purifier 200 of the present invention is a normally open valve, the drain pipe electric valve 205 is a normally closed valve, and the pump pipe electric valve 317 in the rotary spray device 300 is a normally closed valve. When the water inlet pipe electric valve 204, the drain pipe electric valve 205 and the pump pipe electric valve 317 are all in normal state, the water to be purified enters the water purifier 200 from the water inlet pipe joint 219 through the pipeline, and after filtration, it flows out from the water purification flange pipe 210 through the water purification flange pipe 210. The pipeline enters the water storage tower for storage to realize the water purification function. When the stainless steel cylindrical filter element 215 in the water purification device 200 is blocked and the water purification capacity is seriously reduced, the water inlet pipe electric valve 204 is closed, the drain pipe electric valve 205 and the pump water pipe electric valve 317 are opened, and under the action of the rotary spray device 300, the stainless steel cylindrical filter element 215 in the water purification device 200 is automatically sprayed and cleaned, and the sewage containing mud and impurities is discharged from the sewage pipe 220 at the bottom of the water purification device 200. Figure 7 , Fig. 9 , Fig.10 shown.

[0023] The working process of an active rotary spray filter element self-cleaning water purifier is as follows: the device is installed between the tap water source and the water storage tower, the water inlet pipe joint 219 is connected to the water source pipeline, the water purification flange pipe 210 is connected to the pipeline leading to the water storage tower, and the water pump suction pipe 319 is connected to the pipeline leading to the water storage tower and the pipe mouth is submerged below the water surface.

[0024] When the equipment performs water purification, the external controller controls the water inlet pipe electric valve 204, the drain pipe electric valve 205 and the water inlet pipe electric valve 204 to be in a normal state, the water inlet pipe electric valve 204 is opened, the drain pipe electric valve 205 and the water inlet pipe electric valve 204 are closed, and the untreated water from the water source enters the filter tank body 201 through the pipeline from the water inlet pipe joint 219 through the water inlet pipe electric valve 204. Under the action of water pressure, the water inside the filter tank body 201 passes through the stainless steel filter net on the surface of the stainless steel cylindrical filter element 215, enters the stainless steel cylindrical filter element 215 to complete the filtration, and the particulate impurities are blocked on the outer surface of the stainless steel cylindrical filter element 215. The filtered water enters the cavity of the left cavity cover 209 of the tank body from the end outlet of the stainless steel cylindrical filter element 215 through the water permeable hole 2081 on the filter element mounting plate 208, and then flows into the water storage tower from the water purification flange pipe 210 through the pipeline.

[0025] When the stainless steel filter screen on the surface of the stainless steel cylindrical filter element 215 in the equipment is clogged by granular impurities such as mud and sand, resulting in a significant decrease in filtering capacity, the external controller controls the water inlet pipe electric valve 204, the drain pipe electric valve 205 and the water inlet pipe electric valve 204 to all be energized and switched to a connected state, the water inlet pipe electric valve 204 is closed, the drain pipe electric valve 205 and the water inlet pipe electric valve 204 are opened, and the water inside the tank body 201 to be filtered is discharged from the drain pipe electric valve 205 through the sewage pipe 220, the high-pressure water pump 315 is powered on and starts, and draws water from the water storage tower through the water pump suction pipe 319, and the water is pressurized by the water pump Pipe 316 outputs high-pressure water flow, which flows through the water pump pressure water pipe 316, the pump water joint 318, the tubular stepped rotating shaft 303 to the multi-channel diverter plate 308 in sequence. The high-pressure water flow is diverted inside the multi-channel diverter plate 308 to the inside of the nozzle straight pipe 310 and several nozzle curved pipes 309. The high-pressure water flow inside the nozzle straight pipe 310 and the nozzle curved pipe 309 is ejected from the fan-shaped nozzle 311 to form a fan-shaped high-pressure water flow, which is used to flush the surface of the stainless steel cylindrical filter element 215. The mud and sand impurities that fall off the surface of the stainless steel cylindrical filter element 215 are discharged from the sewage pipe 220 at the bottom of the water purification device 200 along with the water flow.

[0026] When the high-pressure water pump 315 is powered on and started, the reduction motor 313 is powered on and started, and the output shaft of the reduction motor 313 begins to rotate, and the driving gear 314 installed on the output shaft rotates accordingly. The driving gear 314 rotates the driven gear 307 and the tubular stepped rotating shaft 303 through meshing transmission, and the multi-channel diverter plate 308 installed at the end of the tubular stepped rotating shaft 303 and the nozzle straight pipe 310 and a plurality of nozzle curved pipes 309 installed on the multi-channel diverter plate 308 perform a rotational motion, and the fan-shaped high-pressure water flow sprayed by the fan-shaped nozzle 311 installed on the nozzle straight pipe 310 and the nozzle curved pipe 309 can surround all the stainless steel cylindrical filter elements 215 for spraying operations.

[0027] After a period of time, the stainless steel cylindrical filter element 215 is sprayed to clean the dirt and impurities on its surface, and the external controller controls the water inlet pipe electric valve 204, the drain pipe electric valve 205 and the water inlet pipe electric valve 204 to lose power and return to normal, the high-pressure water pump 315 and the reduction motor 313 are powered off and stop running, and the equipment switches back to the water purification mode.

Claims

1. An active rotary spray filter element self-cleaning water purifier, which is a mechanical device for filtering and purifying tap water entering a water tower, and in particular a water purification device used in a small rural tap water station, which can automatically clean the filter element by high-pressure spraying. The device mainly consists of three parts: a main frame (101), a water purification device (200) and a rotary spray device (300); The main frame (101) is formed by welding and assembling a cylindrical support (102) and a right stand (103), and is a supporting and mounting structural member for the water purification device (200) and the rotary spray device (300); The water purification device (200) comprises a filter tank body (201) installed transversely on a cylindrical support (102) of a main frame (101); a tank body water inlet pipe (202) is welded and installed at an upper opening of the filter tank body (201); an inlet pipe electric valve (204) is installed between the tank body water inlet pipe (202) and a water inlet pipe joint (219) to form a pipeline on-off control connection; a tank body drain pipe (203) is welded and installed at a lower opening of the filter tank body (201); a drain pipe electric valve (205) is installed between the tank body drain pipe (203) and a sewage pipe (220) to form a pipeline on-off control connection; a tank body left side sealing gasket (206), a filter element installation plate (208) and a tank body left cavity cover (209) are installed in sequence on a left annular installation plate of the filter tank body (201) and are fastened by bolts; a tank body left cavity cover (209) is welded and installed at a central opening A water purification flange pipe (210) is provided. A tank body right side sealing gasket (207) and a tank body right cavity cover (211) are sequentially installed on the right side annular mounting plate of the filter tank body (201) and are fastened by bolts. A rotary shaft flange pipe (212) is welded and installed at the central opening of the tank body right cavity cover (211). A sealing ring A (213) is installed in the shaft hole sealing groove of the rotary shaft flange pipe (212). A plurality of filter element mounting rods (214) are welded and installed on the filter element mounting plate (208) through each filter element rod mounting hole (2082). A filter element sealing gasket A (216), a stainless steel cylindrical filter element (215), a filter element sealing gasket B (217) and a filter element end cover (218) are sequentially installed on each filter element mounting rod (214) on one side of the filter element positioning recessed hole (2083) on the filter element mounting plate (208), and are fastened to the filter element mounting rod (214) by nuts. The rotary spray device (300) is a device in which a table sub-frame (301) is installed on the right table frame (103) of the main frame (101). A sealing shaft seat (302), a bearing seat A (305) and a bearing seat B (306) are fixedly installed on the panel of the table sub-frame (301) from right to left. The tubular stepped rotary shaft (303) passes through the shaft hole of the bearing seat A (305), the shaft hole of the bearing seat B (306) and the shaft hole of the rotary shaft flange pipe (212) in sequence. The right end of the tubular stepped rotary shaft (303) is inserted into the sealing shaft. The shaft hole of the bearing seat (302) is connected to the shaft of the tubular stepped rotating shaft (303) through a sealing ring B (304), the shaft hole of the rotating shaft flange tube (212) is connected to the shaft of the tubular stepped rotating shaft (303) through a sealing ring A (213), a driven gear (307) is installed on the shaft shoulder of the tubular stepped rotating shaft (303) between the bearing seat A (305) and the bearing seat B (306), a multi-channel manifold (308) is installed on the left end of the tubular stepped rotating shaft (303), and several threaded holes of the side passages of the multi-channel manifold (308) are installed. A dry nozzle curved tube (309), each nozzle curved tube (309) is installed with a plurality of fan-shaped nozzles (311) on the radial inner side, a nozzle straight tube (310) is installed on the threaded hole of the end passage of the multi-passage manifold (308), a plurality of fan-shaped nozzles (311) are installed on the radial outer side of the nozzle straight tube (310), a water inlet of the sealing shaft seat (302) is connected to a pump water joint (318) through a pipe thread, a high-pressure water pump (315) is fixedly installed at the bottom of the right stand (103) of the main frame (101), and the water inlet of the high-pressure water pump (315) A water pump suction pipe (319) is connected, a water pressure port of the high-pressure water pump (315) is connected to a water pump pressure pipe (316), a pipeline on-off control connection is formed between the water inlet of the pump water joint (318) and the water pump pressure pipe (316) via a pump water pipe electric valve (317), a reduction motor (313) is fixedly mounted on the panel of the table sub-frame (301) via a motor mounting seat (312), a driving gear (314) is mounted on the output shaft of the reduction motor (313), and the driving gear (314) and the driven gear (307) form a gear meshing transmission.

2. The active rotary spray filter element self-cleaning water purifier according to claim 1, characterized in that The filter element mounting plate (208) in the water purification device (200) is evenly distributed in an annular pattern with water permeable holes (2081), filter element rod mounting holes (2082) and filter element positioning recessed holes (2083). Water filtered and purified by the stainless steel cylindrical filter element (215) can enter the cavity of the left chamber cover (209) of the tank body through the water permeable holes (2081) and then be discharged through the water purification flange pipe (210). The filter element positioning recessed holes (2083) can assist the stainless steel cylindrical filter element (215) in accurately positioning itself during installation.

3. The active rotary spray filter self-cleaning water purifier according to claim 1, characterized in that The axes of the plurality of fan-shaped nozzles (311) on the nozzle curved tube (309) in the rotary spray device (300) are staggered at a certain angle to the plane where the rotary axis is located. The plurality of fan-shaped nozzles (311) on the nozzle straight tube (310) are all directly facing the stainless steel cylindrical filter element (215). When the stainless steel cylindrical filter element (215) is subjected to a spray cleaning operation, the fan-shaped water flows sprayed from the fan-shaped nozzles (311) can be directed toward the filter screen surface of the stainless steel cylindrical filter element (215) in different directions.

4. The active rotary spray filter element self-cleaning water purifier according to claim 1, characterized in that The tubular stepped rotating shaft (303) and the shaft hole of the driven gear (307) in the rotary spray device (300) are formed as a whole through interference fit. The tubular stepped rotating shaft (303) and the driven gear (307) can be driven by the meshing of a driving gear (314) mounted on the output shaft of a reduction motor (313) to perform a rotary motion, thereby driving a multi-channel diverter plate (308) mounted on the left end of the tubular stepped rotating shaft (303) to perform a rotary motion. The nozzle curved tube (309) and the nozzle straight tube (310) respectively perform a circumferential motion on the outside and inside of the stainless steel cylindrical filter element (215), so that the fan-shaped water flow sprayed by the fan-shaped nozzle (311) can perform a surrounding spray cleaning operation on the stainless steel cylindrical filter element (215).

5. The active rotary spray filter element self-cleaning water purifier according to claim 1, characterized in that The water inlet pipe electric valve (204) in the water purification device (200) is a normally open valve, the drain pipe electric valve (205) is a normally closed valve, and the pump pipe electric valve (317) in the rotary spray device (300) is a normally closed valve. When the water inlet pipe electric valve (204), the drain pipe electric valve (205) and the pump pipe electric valve (317) are all in normal state, the water to be purified enters the water purification device (200) from the water inlet pipe joint (219) through the pipeline, and flows out from the water purification flange pipe (210) after filtration. The wastewater enters the water storage tower through the pipeline for storage, and realizes the water purification function. When the stainless steel cylindrical filter element (215) in the water purification device (200) is blocked and the water purification capacity is seriously reduced, the water inlet pipe electric valve (204) is closed, the drainage pipe electric valve (205) and the pump water pipe electric valve (317) are opened, and the stainless steel cylindrical filter element (215) in the water purification device (200) is automatically sprayed and cleaned under the action of the rotary spray device (300), and the wastewater containing mud and sand impurities is discharged from the sewage discharge pipe (220) at the bottom of the water purification device (200).

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