Active carbon rod filter element structure

Abstract

The invention relates to the technical field of water purification filter elements, in particular to an activated carbon rod filter element structure which comprises a carbon rod filter element, a columnar shell and a backwashing assembly, an annular water cavity is formed between the carbon rod filter element and the columnar shell, and a first water inlet, a second water inlet, a first water outlet and a second water outlet are formed in the bottom of the columnar shell; a columnar base is fixedly connected to the bottom of the columnar shell, a purified water discharge pipe and a sewage discharge pipe are arranged on the columnar base, the backwashing assembly comprises an elastic reset piece, a water pressure driving piece and a rotary pipe valve, a partition block is arranged in the middle of the rotary pipe valve and divides the rotary pipe valve into a water inlet control part and a water discharge control part, a main water inlet pipe is arranged on the water inlet control part, and a water outlet pipe is arranged on the water discharge control part. By means of the backwashing assembly of the device, in the backwashing process, high-pressure water can penetrate through the annular carbon rod from inside to outside, impurities adsorbed in the annular carbon rod are taken away through flowing of the high-pressure water, and finally the impurity removal rate of the annular carbon rod is increased.

Description

Technical Field

[0001] The invention relates to the technical field of water purification filter elements, and in particular to an activated carbon rod filter element structure. Background Art

[0002] Activated carbon is a specially treated carbon. The organic raw materials are heated in an airtight condition to reduce the non-carbon components, and then react with the gas to erode the surface and produce a well-developed microporous structure.

[0003] The existing Chinese invention patent with patent number CN113185041B discloses an activated carbon-based composite filter element, but the above patent and the prior art also have the following defects: First, the above patent scrapes off the impurities on the filter element body by lifting and lowering the movable ring. However, when the filter element body is filtering impurities, the impurities are adsorbed in the filter element body. Before the adsorption of the filter element body reaches saturation, the impurities are difficult to flow on the outer surface of the filter element body. Therefore, the above patent has low impurity removal efficiency for the filter element body. Secondly, after the movable ring scrapes off the impurities on the outer wall of the filter element body, the scraped impurities will still fall into the cavity between the filter element body and the outer shell. Since the impurities cannot be discharged, the scraped impurities will flow back to the filter element body, and finally the scraping of the impurities by the movable ring will not have a beneficial effect; Thirdly, in the initial stage of use, the permeability of the filter element body is high, so when water flows into the outer shell, the water will directly penetrate the filter element body into the inner cavity of the filter element body. Therefore, in the initial stage of use, the movable ring will not drop. Only when the adsorption at the upper end of the filter element body reaches saturation, the water pressure in the outer shell will increase. The gradually increasing water pressure will drive the movable ring to drop. When the movable ring drops to the limit, the adsorption of the entire filter element body reaches saturation, and the water between the outer shell and the filter element body cannot be discharged. Therefore, in the later stage of use, the movable ring will always be in a descending state and cannot rise. Then the movable ring cannot scrape impurities on the outer wall of the filter element body upward.

[0004] Therefore, it is necessary to provide an activated carbon rod filter element structure to solve the above problems. Summary of the invention

[0005] Based on this, it is necessary to provide an activated carbon rod filter element structure to address the above technical problems.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an activated carbon rod filter element structure, including a carbon rod filter element, a columnar shell and a backwash component, the columnar shell is vertical, the carbon rod filter element is coaxially fixed in the columnar shell, an annular water cavity is formed between the carbon rod filter element and the columnar shell, and a No. 1 water inlet, a No. 2 water inlet, a No. 1 drain port and a No. 2 drain port are sequentially provided at the bottom of the columnar shell in a horizontal direction, the No. 1 water inlet and the No. 1 drain port are both connected to the annular water cavity, the No. 2 water inlet and the No. 2 drain port are both connected to the inner cavity of the carbon rod filter element, and the No. 1 water inlet and the No. 2 drain port are both connected to the inner cavity of the carbon rod filter element. A columnar base is fixedly connected to the bottom of the shell, and a clean water drain pipe and a sewage drain pipe corresponding to the No. 1 drain outlet and the No. 2 drain outlet are provided on the columnar base respectively. The backwash component includes an elastic reset member, a water pressure drive member and a rotary pipe valve. The rotary pipe valve rotates horizontally in the columnar base. A partition block is provided in the middle of the rotary pipe valve. The partition block divides the rotary pipe valve into a water inlet control part and a drainage control part. A main water inlet pipe is provided on the water inlet control part. A water pipe connected to the upper end of the annular water cavity is provided on the side of the columnar shell, and the water pressure drive member and the elastic reset member are both provided at the lower end of the water pipe.

[0007] Furthermore, the carbon rod filter element includes an annular carbon rod, a top cover, a bottom cover and an annular covering net. The annular carbon rod is vertical, the top cover is fixed to the top of the annular carbon rod, the bottom cover is fixed to the bottom of the annular carbon rod, the annular covering net covers the outer wall of the annular carbon rod, and the two ends of the annular covering net are respectively fixed to the top cover and the bottom cover. A through hole No. 1 and a through hole No. 2 are provided on the bottom cover. The through hole No. 1 connects the water inlet No. 2 with the inner cavity of the annular carbon rod, and the through hole No. 2 connects the water outlet No. 1 with the inner cavity of the annular carbon rod.

[0008] Furthermore, the top of the columnar shell is an open structure, and a sealing cover is fixed on the top of the columnar shell. A circle of limiting ring is formed on the inner bottom of the columnar shell, and the bottom cover is inserted downward into the limiting ring. An adjusting pressing piece is provided on the sealing cover, and the adjusting pressing piece includes an adjusting screw, a threaded sleeve and a pressure plate. The threaded sleeve is vertically fixed to the top of the sealing cover, and the adjusting screw passes vertically downward through the threaded sleeve and the sealing cover, and the threaded sleeve cooperates with the adjusting screw thread, and the pressure plate is horizontally fixed to the bottom of the adjusting screw.

[0009] Furthermore, a horizontal columnar through groove is opened in the columnar base, and the rotary pipe valve rotates coaxially in the columnar through groove. The water inlet control part includes No. 1 expansion tube, No. 2 expansion tube and connecting pipe. The No. 1 expansion tube, No. 2 expansion tube and connecting pipe are all coaxial with the columnar through groove, and the No. 1 expansion tube and the No. 2 expansion tube are distributed at intervals along the axial direction of the columnar through groove. The connecting pipe connects the No. 1 expansion tube with the No. 2 expansion tube. The main water inlet pipe is connected to the end of the No. 1 expansion tube away from the connecting pipe, and the end of the No. 2 expansion tube away from the connecting pipe is a closed structure. The No. 1 expansion tube is provided with a No. 1 water inlet hole, and the No. 2 expansion tube is provided with a No. 2 water inlet hole. The No. 1 water inlet hole is staggered with the No. 2 water inlet hole. The columnar base is provided with a No. 1 water trough and a No. 2 water trough. The No. 1 water trough is vertically connected to the No. 1 water inlet, and the No. 2 water trough is vertically connected to the No. 2 water inlet.

[0010] Furthermore, the drainage control part includes a No. 3 expansion tube, a No. 4 expansion tube and a columnar connecting block. The No. 3 expansion tube, the columnar connecting block and the No. 4 expansion tube are all coaxial with the columnar through groove, and the No. 3 expansion tube and the No. 4 expansion tube are distributed at intervals along the axial direction of the columnar through groove. Both ends of the No. 3 expansion tube and the No. 4 expansion tube are closed structures. The columnar connecting block fixes the No. 3 expansion tube and the No. 4 expansion tube together. The No. 1 drainage hole and the No. 2 drainage hole are provided on the No. 3 expansion tube, and the No. 3 drainage hole and the No. 4 drainage hole are provided on the No. 4 expansion tube. Holes, drain hole No. 1 is offset from drain hole No. 3, drain hole No. 2 is offset from drain hole No. 4, water trough No. 3, water trough No. 4, flow trough No. 1 and flow trough No. 2 are provided in the columnar base, flow trough No. 1 corresponds to expansion tube No. 3, flow trough No. 2 corresponds to expansion tube No. 4, and both flow trough No. 1 and flow trough No. 2 are connected with the columnar through slot, clean water drain pipe and sewage drain pipe are fixed in flow trough No. 1 and flow trough No. 2 respectively, water trough No. 3 leads vertically to drain outlet No. 1, and water trough No. 4 leads vertically to drain outlet No. 2.

[0011] Furthermore, a bracket is fixedly provided on the outer wall of the columnar base, a shaft seat No. 1 is fixedly provided on the bracket, the main water inlet pipe passes through the shaft seat No. 1, and an annular cover is fixedly provided on one end of the columnar through groove close to the bracket.

[0012] Furthermore, a protrusion is formed on the end of the No. 4 expansion tube away from the columnar connecting block, a sealing plate is fixedly provided on the end of the columnar through groove close to the No. 4 expansion tube, a horizontal limiting rod is fixedly provided on the sealing plate, a limiting cone is formed on the end of the limiting rod that penetrates into the columnar through groove, a horizontal semicircular pin is formed on the limiting cone, a columnar slot is opened inwardly on the side of the protrusion facing the semicircular pin, a limiting strip is formed in the columnar slot, and the cross-section of the limiting strip is a right triangle.

[0013] Furthermore, the water pipe is vertical, and the hydraulic drive component includes an end pipe, a piston, a rack and a gear ring. The end pipe is coaxially connected to the lower end of the water pipe, and the bottom of the end pipe is a closed structure. The piston is arranged in the end pipe, with the cap end of the piston facing upward, and the rod of the piston passing downward through the end pipe. The gear ring is coaxially fixed to the outer wall of the main water inlet pipe, the rack is slidably connected to the bracket in the vertical direction, and the rack is meshed with the gear ring, the rod of the piston is downwardly fixed to the top of the rack, and the elastic reset part is arranged in the end pipe.

[0014] Furthermore, the elastic return member includes a spring, which is vertically arranged in the end tube and sleeved on the rod of the piston. The two ends of the spring respectively contact the cap end of the piston and the inner bottom of the end tube. The upper end of the end tube is provided with a branch pipe, and an electromagnetic valve is provided on the branch pipe.

[0015] Furthermore, a No. 2 axle seat is fixedly provided on the bracket, and the main water inlet pipe is connected to the No. 2 axle seat after passing through the No. 1 axle seat. A fixed pipe is formed on the outer wall of the No. 2 axle seat, and the fixed pipe is connected to the main water inlet pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects: Firstly, the backwashing assembly of the device allows high-pressure water to penetrate the annular carbon rod from the inside to the outside during the backwashing process, and the impurities adsorbed in the annular carbon rod are taken away by the flow of high-pressure water, thereby ultimately improving the impurity removal rate of the annular carbon rod; Secondly, the impurities flushed from the annular carbon rod will fall into the annular water cavity. At this time, the rotary pipe valve will open the No. 2 drainage port, and the water containing impurities in the annular water cavity will be gradually discharged through the No. 2 drainage port, thereby preventing the impurities flushed from the annular carbon rod from being adsorbed in the annular carbon rod again; Thirdly, the device is used to drive the rotary pipe valve to rotate with a hydraulic drive component, which converts the kinetic energy of water into mechanical energy, thereby eliminating the need to install an external drive source, making the device more environmentally friendly and having lower manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 yes Figure 1 A1 is a partial enlarged schematic diagram; Figure 3 is a top view of the present invention; Figure 4 yes Figure 3 Section view along line AA; Figure 5 yes Figure 4 A2 is a partial enlarged schematic diagram; Figure 6 yes Figure 3 Sectional view along line BB; Figure 7 yes Figure 3 Sectional view along line CC; Figure 8 It is a schematic diagram of the three-dimensional structure of the carbon rod filter element; Fig. 9 It is the three-dimensional structure decomposition of the top cover and the columnar shell Figure 1 ; Fig.10 It is the three-dimensional structure decomposition of the top cover and the columnar shell Figure 2 ; Fig.11 This is a three-dimensional structure diagram of a rotary tube valve. Figure 1 ; Fig.12 This is a three-dimensional structure diagram of a rotary tube valve. Figure 2 ; Fig.13 It is a three-dimensional structural diagram of a columnar base; Fig.14 is a plan view of a hydraulic drive member; Fig.15 yes Fig.14 Cross-sectional view along line DD.

[0018] The numbers in the figure are: 1, carbon rod filter element; 2, columnar shell; 3, annular water cavity; 4, No. 1 water inlet; 5, No. 2 water inlet; 6, No. 1 drain outlet; 7, No. 2 drain outlet; 8, columnar base; 9, clean water drain pipe; 10, sewage drain pipe; 11, rotary pipe valve; 12, spacer; 13, main water inlet pipe; 14, water pipe; 15, annular carbon rod; 16, top cover; 17, bottom cover; 18, annular covering net; 19, No. 1 through hole; 20, No. 2 through hole; 21, sealing cover; 22, limit ring; 23, adjusting screw; 24, threaded sleeve; 25, pressure plate; 26, columnar through groove; 27, No. 1 expansion tube; 28, No. 2 expansion tube; 29, connecting pipe; 30, No. 1 water inlet hole; 31, No. 2 water inlet hole; 32, No. 1 water tank; 33, No. 2 water tank; 34, No. 3 expansion tube; 35, No. 4 expansion tube; 36, columnar connecting block; 37, No. 1 drain hole; 38, No. 2 drain hole; 39, No. 3 drain hole; 40, No. 4 drain hole; 41, No. 3 water tank; 42, No. 4 water tank; 43, No. 1 flow slot; 44, No. 2 flow slot; 45, bracket; 46, No. 1 shaft seat; 47, annular cover; 48, bump; 49, sealing plate; 50, limit rod; 51, limit cone; 52, semicircular pin; 53, columnar slot; 54, limit strip; 55, end pipe; 56, piston; 57, rack; 58, gear ring; 59, spring; 60, branch pipe; 61, solenoid valve; 62, No. 2 shaft seat; 63, fixed pipe; 64, dynamic sealing ring. DETAILED DESCRIPTION

[0019] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] refer to Figures 1 to 15 An activated carbon rod filter element structure shown in the figure comprises a carbon rod filter element 1, a columnar shell 2 and a backwash component, the columnar shell 2 is vertical, the carbon rod filter element 1 is coaxially fixed in the columnar shell 2, an annular water cavity 3 is formed between the carbon rod filter element 1 and the columnar shell 2, a No. 1 water inlet 4, a No. 2 water inlet 5, a No. 1 drain port 6 and a No. 2 drain port 7 are sequentially provided at the bottom of the columnar shell 2 in the horizontal direction, the No. 1 water inlet 4 and the No. 1 drain port 6 are both connected to the annular water cavity 3, the No. 2 water inlet 5 and the No. 2 drain port 7 are both connected to the inner cavity of the carbon rod filter element 1, a columnar base 8 is fixedly connected to the bottom of the columnar shell 2, a clean water drain pipe 9 and a sewage drain pipe 10 corresponding to the No. 1 drain port 6 and the No. 2 drain port 7 are respectively provided on the columnar base 8, the backwash component comprises an elastic reset part, a hydraulic drive part and a rotary pipe valve 11, the rotary pipe valve 11 is horizontally rotated in the columnar base 8, and a spacer 12 (combined with Figure 4 and Fig.11 ), the spacer 12 divides the rotary tube valve 11 into a water inlet control part and a water discharge control part, the water inlet control part is provided with a main water inlet pipe 13, the side of the columnar shell 2 is provided with a water pipe 14 connected with the upper end of the annular water chamber 3, and the hydraulic drive part and the elastic reset part are both arranged at the lower end of the water pipe 14.

[0021] In the initial state, the water inlet control unit of the rotary tube valve 11 opens the No. 1 water inlet 4 and blocks the No. 2 water inlet 5 at the same time, and the drainage control unit of the rotary tube valve 11 opens the No. 1 drainage port 6 and blocks the No. 2 drainage port 7 at the same time. When the high-pressure water enters the rotary tube valve 11 through the main water inlet pipe 13, the high-pressure water will enter the annular water cavity 3 from the No. 1 water inlet 4. At this time, since the No. 2 drainage port 7 is blocked by the drainage control unit of the rotary tube valve 11, the high-pressure water entering the annular water cavity 3 can only pass through the carbon rod filter element 1 from the outside to the inside and enter the inner cavity of the carbon rod filter element 1. In this process, the carbon rod filter element 1 will adsorb impurities in the high-pressure water, and the filtered clean water will enter the clean water discharge pipe 9 through the No. 1 drainage port 6, and finally the clean water will be discharged through the clean water discharge pipe 9; In the initial stage of use, the carbon rod filter element 1 has high permeability, so when high-pressure water enters the annular water chamber 3, the high-pressure water will immediately pass through the carbon rod filter element 1 and enter the inner cavity of the carbon rod filter element 1. Therefore, in the initial stage of use, the water level in the annular water chamber 3 will not continue to rise. After a period of use, the adsorption of the carbon rod filter element 1 reaches saturation. At this time, it is difficult for the water in the annular water chamber 3 to pass through the carbon rod filter element 1 and enter the inner cavity of the carbon rod filter element 1. Then the water level in the annular water chamber 3 will continue to rise, and finally the water in the annular water chamber 3 will enter the water pipe 14. As the water pressure in the water pipe 14 increases, the hydraulic drive member drives the rotary tube valve 11 to rotate. In this process, the water inlet control part of the rotary tube valve 11 will open the No. 2 water inlet 5 and block the No. 1 water inlet 4 at the same time. The discharge of the rotary tube valve 11 The water control unit will open the No. 2 drain port 7 and block the No. 1 drain port 6 at the same time. When the No. 2 water inlet 5 is opened, high-pressure water will pass through the carbon rod filter element 1 from the inside to the outside. At this time, the high-pressure water will flush the impurities adsorbed by the carbon rod filter element 1 into the annular water cavity 3. When the No. 2 drain port 7 is opened, the water in the annular water cavity 3 will enter the sewage discharge pipe 10 through the No. 2 drain port 7. Finally, the sewage containing impurities will be discharged through the sewage discharge pipe 10. Among them, when the carbon rod filter element 1 is backwashed, the high-pressure water is continuously injected into the rotary tube valve 11. After a period of time, the injection of high-pressure water is stopped. At this time, the water level in the annular water cavity 3 will gradually decrease, and the water pressure in the water pipe 14 will gradually decrease. The elastic reset member will drive the rotary tube valve 11 to rotate in the opposite direction until it is reset to the initial state.

[0022] In order to show the specific structure of the carbon rod filter element 1, the following features are set: The carbon rod filter element 1 comprises an annular carbon rod 15, a top cover 16, a bottom cover 17 and an annular covering net 18 (such as Figure 8 and Fig. 9 As shown in the figure, the annular carbon rod 15 is vertical, the top cover 16 is fixed to the top of the annular carbon rod 15, the bottom cover 17 is fixed to the bottom of the annular carbon rod 15, the annular covering net 18 covers the outer wall of the annular carbon rod 15, and the two ends of the annular covering net 18 are respectively fixed to the top cover 16 and the bottom cover 17, and a No. 1 through hole 19 and a No. 2 through hole 20 are provided on the bottom cover 17, the No. 1 through hole 19 connects the No. 2 water inlet 5 with the inner cavity of the annular carbon rod 15, and the No. 2 through hole 20 connects the No. 1 drain port 6 with the inner cavity of the annular carbon rod 15.

[0023] When the carbon rod filter element 1 is installed in the columnar shell 2, the bottom cover 17 is downwardly in conflict with the bottom of the columnar shell 2. In the initial state, high-pressure water is injected into the annular water chamber 3 through the No. 1 water inlet 4. The high-pressure water entering the annular water chamber 3 will pass through the annular covering net 18 and the annular carbon rod 15 and enter the inner cavity of the annular carbon rod 15. Finally, the high-pressure water entering the inner cavity of the annular carbon rod 15 will be discharged from the No. 1 drain port 6 through the No. 2 through hole 20. When the rotary tube valve 11 rotates, the No. 1 water inlet 4 is blocked, the No. 2 water inlet 5 is opened, the No. 1 drain port 6 is blocked, and the No. 2 drain port 7 is opened. At this time, the high-pressure water in the rotary tube valve 11 will follow the No. 2 water inlet 5 and enter the inner cavity of the annular carbon rod 15 through the No. 1 through hole 19. Finally, the high-pressure water will pass through the annular carbon rod 15 from the inside to the outside, thereby flushing the impurities adsorbed by the annular carbon rod 15 into the annular water chamber 3.

[0024] In order to facilitate the replacement of the carbon rod filter element 1, the following features are set: The top of the columnar housing 2 is an open structure, a sealing cover 21 is fixedly provided on the top of the columnar housing 2, a circle of limiting ring 22 is formed on the inner bottom of the columnar housing 2, and the bottom cover 17 is inserted downward into the limiting ring 22 (such as Figure 4 As shown in the figure, the sealing cover 21 is provided with an adjusting pressing piece, which includes an adjusting screw 23, a threaded sleeve 24 and a pressing plate 25. The threaded sleeve 24 is vertically fixed to the top of the sealing cover 21, and the adjusting screw 23 passes vertically downward through the threaded sleeve 24 and the sealing cover 21, and the threaded sleeve 24 is threadedly matched with the adjusting screw 23, and the pressing plate 25 is horizontally fixed to the bottom of the adjusting screw 23.

[0025] When installing the carbon rod filter element 1, insert the bottom cover 17 of the carbon rod filter element 1 downward into the limit ring 22, and then fix the sealing cover 21 on the top of the columnar shell 2, and finally rotate the adjusting screw 23 downward. During this process, the adjusting screw 23 will drive the pressure plate 25 to press downward on the top cover 16 of the carbon rod filter element 1, so that the entire carbon rod filter element 1 is pressed tightly into the columnar shell 2 through the pressure plate 25. When replacing the carbon rod filter element 1, the sealing cover 21 can be removed from the top of the columnar shell 2 to take out the entire carbon rod filter element 1.

[0026] In order to show the specific structure of the water inlet control unit, the following features are set: A horizontal columnar through groove 26 (combined with Figure 1 and Fig.13), the rotary pipe valve 11 coaxially rotates in the columnar groove 26, the water inlet control unit includes a No. 1 expansion pipe 27, a No. 2 expansion pipe 28 and a connecting pipe 29, the No. 1 expansion pipe 27, the No. 2 expansion pipe 28 and the connecting pipe 29 are all coaxial with the columnar groove 26, and the No. 1 expansion pipe 27 and the No. 2 expansion pipe 28 are spaced apart along the axial direction of the columnar groove 26, and the connecting pipe 29 connects the No. 1 expansion pipe 27 and the No. 2 expansion pipe 28, and the total water inlet pipe 13 is connected to the end of the No. 1 expansion tube 27 away from the connecting tube 29, the end of the No. 2 expansion tube 28 away from the connecting tube 29 is a closed structure, the No. 1 expansion tube 27 is provided with a No. 1 water inlet hole 30, the No. 2 expansion tube 28 is provided with a No. 2 water inlet hole 31, the No. 1 water inlet hole 30 is staggered with the No. 2 water inlet hole 31, and the columnar base 8 is provided with a No. 1 water tank 32 and a No. 2 water tank 33, and the No. 1 water tank 32 is vertically connected to the No. 1 water inlet 4 (such as Figure 4 As shown), the second water tank 33 is vertically connected to the second water inlet 5.

[0027] The outer walls of the No. 1 expansion tube 27 and the No. 2 expansion tube 28 are both in contact with the inner wall of the columnar through groove 26. The outer diameter of the connecting tube 29 is smaller than the inner diameter of the columnar through groove 26. In the initial state, the No. 1 water inlet 30 corresponds to the No. 1 water tank 32. Since the No. 1 water inlet 30 and the No. 2 water inlet 31 are misaligned, the No. 2 water inlet 31 is blocked by the inner wall of the columnar through groove 26. High-pressure water is injected into the No. 1 expansion tube 27 through the main water inlet pipe 13. Since the No. 2 water inlet 31 is blocked by the inner wall of the columnar through groove 26, The end of the No. 2 expansion tube 28 facing away from the connecting tube 29 is a blocking structure, so the high-pressure water can only enter the annular water cavity 3 through the No. 1 water inlet hole 30 upward along the No. 1 water trough 32 and the No. 1 water inlet port 4. When the entire rotary tube valve 11 rotates, the No. 2 water inlet hole 31 rotates to the bottom of the No. 2 water trough 33, and the No. 1 water inlet hole 30 rotates to be blocked by the inner wall of the columnar through groove 26. At this time, the high-pressure water can only enter the inner cavity of the annular carbon rod 15 through the No. 2 water inlet hole 31 upward along the No. 2 water trough 33 and the No. 2 water inlet port 5.

[0028] In order to show the specific structure of the drainage control unit, the following features are set: The drainage control part includes a No. 3 expansion tube 34, a No. 4 expansion tube 35 and a columnar connecting block 36. The No. 3 expansion tube 34, the columnar connecting block 36 and the No. 4 expansion tube 35 are all coaxial with the columnar through groove 26, and the No. 3 expansion tube 34 and the No. 4 expansion tube 35 are distributed at intervals along the axial direction of the columnar through groove 26. Both ends of the No. 3 expansion tube 34 and the No. 4 expansion tube 35 are closed structures. The columnar connecting block 36 fixedly connects the No. 3 expansion tube 34 and the No. 4 expansion tube 35. The No. 1 drainage hole 37 and the No. 2 drainage hole 38 are provided on the No. 3 expansion tube 34, and the No. 3 drainage hole 39 and the No. 4 drainage hole 40 are provided on the No. 4 expansion tube 35 (such as Fig.12As shown, the first drainage hole 37 is staggered with the third drainage hole 39, the second drainage hole 38 is staggered with the fourth drainage hole 40, and the columnar base 8 is provided with a third water trough 41, a fourth water trough 42, a first flow trough 43 and a second flow trough 44 (combined with Figure 6 , Figure 7 and Fig.13 ), the No. 1 flow trough 43 corresponds to the No. 3 expansion tube 34, the No. 2 flow trough 44 corresponds to the No. 4 expansion tube 35, and the No. 1 flow trough 43 and the No. 2 flow trough 44 are both connected to the columnar through groove 26, the clean water discharge pipe 9 and the sewage discharge pipe 10 are respectively fixed in the No. 1 flow trough 43 and the No. 2 flow trough 44, the No. 3 water trough 41 is vertically connected to the No. 1 drainage outlet 6, and the No. 4 water trough 42 is vertically connected to the No. 2 drainage outlet 7.

[0029] The outer walls of the No. 3 expansion tube 34 and the No. 4 expansion tube 35 are both in contact with the inner wall of the columnar through groove 26, and the outer diameter of the columnar connecting block 36 is smaller than the inner diameter of the columnar through groove 26. In the initial state, the No. 1 drainage hole 37 corresponds to the No. 3 water trough 41, the No. 2 drainage hole 38 corresponds to the No. 1 flow groove 43, and the No. 3 drainage hole 39 and the No. 4 drainage hole 40 are both blocked by the inner wall of the columnar through groove 26. At this time, the water in the annular water cavity 3 cannot enter the No. 4 expansion tube 35 through the No. 2 drainage port 7. The water located in the inner cavity of the annular carbon rod 15 will enter the No. 3 expansion tube 34 through the No. 1 drainage port 6 downward along the No. 3 water trough 41 and the No. 1 drainage hole 37. Since the No. 2 drainage hole 38 corresponds to the No. 1 flow groove 43, the water located in the No. 3 expansion tube 34 will eventually be discharged through the clean water drain pipe 9. When the rotary pipe valve 11 is rotated, the No. 1 drainage hole 37 is turned to be blocked by the column The inner wall of the columnar through groove 26 is blocked, the No. 2 drainage hole 38 is turned to correspond to the No. 3 water tank 41, the No. 3 drainage hole 39 is turned to correspond to the No. 4 water tank 42, and the No. 4 drainage hole 40 is turned to correspond to the No. 2 flow groove 44. At this time, the water located in the inner cavity of the annular carbon rod 15 cannot be discharged from the clean water discharge pipe 9 through the No. 3 expansion tube 34, and the water located in the annular water cavity 3 will flow downward along the No. 4 water tank 42 and the No. 3 drainage hole 39 into the No. 4 expansion tube 35 through the No. 2 drainage port 7. Since the No. 4 drainage hole 40 corresponds to the No. 2 flow groove 44 at this time, the water located in the No. 4 expansion tube 35 will eventually be discharged through the sewage discharge pipe 10. In actual use, dynamic sealing rings 64 are provided on both sides of the No. 1 expansion tube 27, the No. 2 expansion tube 28, the No. 3 expansion tube 34 and the No. 4 expansion tube 35 to prevent water from leaking into the columnar through groove 26.

[0030] In order to show how the rotary tube valve 11 rotates in the cylindrical base 8, the following features are provided: A bracket 45 is fixedly provided on the outer wall of the columnar base 8, and a first shaft seat 46 (such as Figure 5 As shown in the figure, the main water inlet pipe 13 passes through the No. 1 shaft seat 46, and an annular cover 47 is fixedly provided on one end of the columnar through groove 26 close to the bracket 45.

[0031] The main water inlet pipe 13 is rotated via the first shaft seat 46 . Since the main water inlet pipe 13 is connected to the entire rotary pipe valve 11 , the entire rotary pipe valve 11 can be rotated via the main water inlet pipe 13 .

[0032] In order to enable the rotary tube valve 11 to accurately achieve a 90° rotation, the following features are provided: A protrusion 48 is formed on the end of the No. 4 expansion tube 35 which is away from the columnar connecting block 36, and a sealing plate 49 is fixedly provided on the end of the columnar through groove 26 close to the No. 4 expansion tube 35, and a horizontal limiting rod 50 is fixedly provided on the sealing plate 49, and a limiting cone 51 is formed on the end of the limiting rod 50 which penetrates into the columnar through groove 26, and a horizontal semicircular pin 52 is formed on the limiting cone 51, and a columnar slot 53 is opened inwardly on the side of the protrusion 48 facing the semicircular pin 52, and a limiting strip 54 is formed in the columnar slot 53, and the cross section of the limiting strip 54 is a right triangle.

[0033] The protrusion 48 conflicts with the limiting cone 51, and the limiting cone 51 limits the axial displacement of the rotary tube valve 11 in the cylindrical through groove 26. When the protrusion 48 conflicts with the limiting cone 51, the semicircular pin 52 is directly inserted into the cylindrical slot 53. At this time, the limiting strip 54 conflicts with the semicircular pin 52. The rotation angle of the rotary tube valve 11 is limited by the cooperation of the limiting strip 54 and the semicircular pin 52. Since the cross section of the limiting strip 54 is a right triangle, the rotation angle of the rotary tube valve 11 is 90 °, that is, the maximum rotation angle of the rotary tube valve 11 in forward and reverse directions is 90°. When processing the No. 1 water inlet hole 30 and the No. 2 water inlet hole 31, it is necessary to ensure that the axial angle between the No. 1 water inlet hole 30 and the No. 2 water inlet hole 31 is 90°. Similarly, it is necessary to ensure that the axial angle between the No. 1 drainage hole 37 and the No. 2 drainage hole 38 is 90°, and the angle between the No. 3 drainage hole 39 and the No. 4 drainage hole 40 is 90°. Therefore, the rotation angle of the rotary tube valve 11 is controlled to ensure that water can flow normally through the rotary tube valve 11.

[0034] In order to show the specific structure of the hydraulic drive, the following features are set: The water pipe 14 is vertical, and the hydraulic drive member includes an end pipe 55, a piston 56, a rack 57 and a gear ring 58. The end pipe 55 is coaxially connected to the lower end of the water pipe 14 (such as Fig.14 As shown in the figure, the bottom of the end tube 55 is a closed structure, the piston 56 is arranged in the end tube 55, the cap end of the piston 56 faces upward, the rod of the piston 56 passes downward through the end tube 55, the gear ring 58 is coaxially fixed to the outer wall of the main water inlet pipe 13, the rack 57 is slidably connected to the bracket 45 in the vertical direction, and the rack 57 is meshed with the gear ring 58, the rod of the piston 56 is fixed downward to the top of the rack 57, and the elastic reset member is arranged in the end tube 55.

[0035] When the water level in the annular water chamber 3 continues to rise, the water in the annular water chamber 3 flows downward into the end pipe 55 through the water pipe 14. Thereafter, as the water pressure in the end pipe 55 increases, the water pressure will overcome the elastic force of the elastic reset member to drive the piston 56 to descend. At this time, the rack 57 will be driven to descend, and the gear ring 58 will be driven to rotate by the rack 57. Finally, the gear ring 58 will drive the main water inlet pipe 13 to rotate.

[0036] In order to show the specific structure of the elastic reset element, the following features are set: The elastic return member includes a spring 59, which is vertically arranged in the end tube 55 and sleeved on the rod of the piston 56. The two ends of the spring 59 respectively conflict with the cap end of the piston 56 and the inner bottom of the end tube 55. The upper end of the end tube 55 is provided with a branch pipe 60, and the branch pipe 60 is provided with a solenoid valve 61.

[0037] When the annular carbon rod 15 performs normal filtering, the solenoid valve 61 closes the branch pipe 60. When the water pressure in the end pipe 55 gradually increases, the water pressure will overcome the elastic force of the spring 59 to drive the piston 56 to descend. When the piston 56 descends, the rotary tube valve 11 will rotate. Before and after the rotary tube valve 11 rotates, high-pressure water is always injected into the columnar shell 2 through the main water inlet pipe 13. Therefore, when the main water inlet pipe 13 is flowing with water, the water pressure in the end pipe 55 will not decrease. When the backwashing of the annular carbon rod 15 is completed, the main water inlet pipe 13 is stopped from being injected with water. At this time, the water in the annular water cavity 3 will be gradually discharged through the No. 2 drain port 7, so that the water pressure in the end pipe 55 will gradually decrease. At the same time, the solenoid valve 61 opens the branch pipe 60, and the water in the water pipe 14 will be discharged downward through the branch pipe 60, finally ensuring that the spring 59 can release the elastic force to drive the rack 57 to rise. When the rack 57 rises, the rotary tube valve 11 will rotate in the opposite direction until it is reset.

[0038] When the rotary tube valve 11 is rotating, in order to ensure that the external high-pressure water can also be injected into the rotary tube valve 11 through the main water inlet pipe 13, the following features are set: A second shaft seat 62 is fixedly provided on the bracket 45 , and the main water inlet pipe 13 is connected to the second shaft seat 62 after passing through the first shaft seat 46 . A fixed pipe 63 is formed on the outer wall of the second shaft seat 62 , and the fixed pipe 63 is connected to the main water inlet pipe 13 .

[0039] The fixed pipe 63 is connected to the upstream high-pressure water pipe. When the high-pressure water is introduced, the high-pressure water will be injected into the main water inlet pipe 13 through the fixed pipe 63. At this time, the No. 2 shaft seat 62 ensures that the main water inlet pipe 13 can still perform normal water delivery work when rotating.

[0040] Working principle: In the initial state, the water inlet control unit of the rotary tube valve 11 opens the No. 1 water inlet 4 and blocks the No. 2 water inlet 5 at the same time, and the drainage control unit of the rotary tube valve 11 opens the No. 1 drainage port 6 and blocks the No. 2 drainage port 7 at the same time. When the high-pressure water enters the rotary tube valve 11 through the main water inlet pipe 13, the high-pressure water will enter the annular water cavity 3 from the No. 1 water inlet 4. At this time, since the No. 2 drainage port 7 is blocked by the drainage control unit of the rotary tube valve 11, the high-pressure water entering the annular water cavity 3 can only pass through the carbon rod filter element 1 from the outside to the inside and enter the inner cavity of the carbon rod filter element 1. In this process, the carbon rod filter element 1 will adsorb impurities in the high-pressure water, and the filtered clean water will enter the clean water discharge pipe 9 through the No. 1 drainage port 6, and finally the clean water will be discharged through the clean water discharge pipe 9; In the initial stage of use, the carbon rod filter element 1 has high permeability, so when high-pressure water enters the annular water chamber 3, the high-pressure water will immediately pass through the carbon rod filter element 1 and enter the inner cavity of the carbon rod filter element 1. Therefore, in the initial stage of use, the water level in the annular water chamber 3 will not continue to rise. After a period of use, the adsorption of the carbon rod filter element 1 reaches saturation. At this time, it is difficult for the water in the annular water chamber 3 to pass through the carbon rod filter element 1 and enter the inner cavity of the carbon rod filter element 1. Then the water level in the annular water chamber 3 will continue to rise, and finally the water in the annular water chamber 3 will enter the water pipe 14. As the water pressure in the water pipe 14 increases, the hydraulic drive member drives the rotary tube valve 11 to rotate. In this process, the water inlet control part of the rotary tube valve 11 will open the No. 2 water inlet 5 and block the No. 1 water inlet 4 at the same time. The discharge of the rotary tube valve 11 The water control unit will open the No. 2 drain port 7 and block the No. 1 drain port 6 at the same time. When the No. 2 water inlet 5 is opened, high-pressure water will pass through the carbon rod filter element 1 from the inside to the outside. At this time, the high-pressure water will flush the impurities adsorbed by the carbon rod filter element 1 into the annular water cavity 3. When the No. 2 drain port 7 is opened, the water in the annular water cavity 3 will enter the sewage discharge pipe 10 through the No. 2 drain port 7. Finally, the sewage containing impurities will be discharged through the sewage discharge pipe 10. Among them, when the carbon rod filter element 1 is backwashed, the high-pressure water is continuously injected into the rotary tube valve 11. After a period of time, the injection of high-pressure water is stopped. At this time, the water level in the annular water cavity 3 will gradually decrease, and the water pressure in the water pipe 14 will gradually decrease. The elastic reset member will drive the rotary tube valve 11 to rotate in the opposite direction until it is reset to the initial state.

[0041] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. An activated carbon rod filter element structure, characterized in that: The invention comprises a carbon rod filter element (1), a columnar housing (2) and a backwashing assembly, wherein the columnar housing (2) is vertical, the carbon rod filter element (1) is coaxially fixed in the columnar housing (2), an annular water cavity (3) is formed between the carbon rod filter element (1) and the columnar housing (2), a No. 1 water inlet (4), a No. 2 water inlet (5), a No. 1 drain outlet (6) and a No. 2 drain outlet (7) are sequentially provided at the bottom of the columnar housing (2) in a horizontal direction, the No. 1 water inlet (4) and the No. 1 drain outlet (6) are both connected to the annular water cavity (3), the No. 2 water inlet (5) and the No. 2 drain outlet (7) are both connected to the inner cavity of the carbon rod filter element (1), the bottom of the columnar housing (2) is fixedly connected to a columnar base (8), and the columnar housing (2) is provided with a plurality of water inlets (4), a No. 2 water inlet (5), a No. 1 drain outlet (6) and a No. 2 drain outlet (7). A clean water discharge pipe (9) and a sewage discharge pipe (10) are provided on the base (8) and correspond to the first discharge port (6) and the second discharge port (7) respectively. The backwash assembly comprises an elastic reset member, a hydraulic drive member and a rotary pipe valve (11). The rotary pipe valve (11) rotates horizontally in the columnar base (8). A partition block (12) is provided in the middle of the rotary pipe valve (11). The partition block (12) divides the rotary pipe valve (11) into a water inlet control part and a drainage control part. A main water inlet pipe (13) is provided on the water inlet control part. A water pipe (14) connected to the upper end of the annular water cavity (3) is provided on the side of the columnar housing (2). The hydraulic drive member and the elastic reset member are both provided at the lower end of the water pipe (14).

2. The activated carbon rod filter element structure according to claim 1, characterized in that: The carbon rod filter element (1) comprises an annular carbon rod (15), a top cover (16), a bottom cover (17) and an annular covering net (18). The annular carbon rod (15) is vertical, the top cover (16) is fixed to the top of the annular carbon rod (15), the bottom cover (17) is fixed to the bottom of the annular carbon rod (15), the annular covering net (18) covers the outer wall of the annular carbon rod (15), and the two ends of the annular covering net (18) are respectively fixed to the top cover (16) and the bottom cover (17), and the bottom cover (17) is provided with a first through hole (19) and a second through hole (20), the first through hole (19) connects the second water inlet (5) with the inner cavity of the annular carbon rod (15), and the second through hole (20) connects the first water outlet (6) with the inner cavity of the annular carbon rod (15).

3. The activated carbon rod filter element structure according to claim 2, characterized in that: The top of the columnar housing (2) is an open structure. A sealing cover (21) is fixedly provided on the top of the columnar housing (2). A circle of limiting ring (22) is formed on the inner bottom of the columnar housing (2). The bottom cover (17) is inserted downward into the limiting ring (22). An adjusting pressing piece is provided on the sealing cover (21). The adjusting pressing piece comprises an adjusting screw (23), a threaded sleeve (24) and a pressing plate (25). The threaded sleeve (24) is vertically fixed to the top of the sealing cover (21). The adjusting screw (23) passes through the threaded sleeve (24) and the sealing cover (21) vertically downward. The threaded sleeve (24) is threadably matched with the adjusting screw (23). The pressing plate (25) is horizontally fixed to the bottom of the adjusting screw (23).

4. The activated carbon rod filter element structure according to claim 1, characterized in that: A horizontal columnar through groove (26) is provided in the columnar base (8), and the rotary pipe valve (11) coaxially rotates in the columnar through groove (26). The water inlet control unit includes a first expansion pipe (27), a second expansion pipe (28) and a connecting pipe (29). The first expansion pipe (27), the second expansion pipe (28) and the connecting pipe (29) are all coaxial with the columnar through groove (26), and the first expansion pipe (27) and the second expansion pipe (28) are spaced apart along the axial direction of the columnar through groove (26). The connecting pipe (29) connects the first expansion pipe (27) and the second expansion pipe (28). The total water inlet pipe (13) is connected to one end of the No. 1 expansion tube (27) away from the connecting tube (29), and one end of the No. 2 expansion tube (28) away from the connecting tube (29) is a closed structure. The No. 1 expansion tube (27) is provided with a No. 1 water inlet hole (30), and the No. 2 expansion tube (28) is provided with a No. 2 water inlet hole (31). The No. 1 water inlet hole (30) and the No. 2 water inlet hole (31) are offset from each other. A No. 1 water trough (32) and a No. 2 water trough (33) are provided in the columnar base (8), and the No. 1 water trough (32) is vertically connected to the No. 1 water inlet (4), and the No. 2 water trough (33) is vertically connected to the No. 2 water inlet (5).

5. The activated carbon rod filter element structure according to claim 1, characterized in that: The drainage control part comprises a No. 3 expansion tube (34), a No. 4 expansion tube (35) and a columnar connection block (36). The No. 3 expansion tube (34), the columnar connection block (36) and the No. 4 expansion tube (35) are all coaxial with the columnar through groove (26), and the No. 3 expansion tube (34) and the No. 4 expansion tube (35) are spaced apart along the axial direction of the columnar through groove (26). Both ends of the No. 3 expansion tube (34) and the No. 4 expansion tube (35) are closed structures. The columnar connection block (36) fixedly connects the No. 3 expansion tube (34) and the No. 4 expansion tube (35). The No. 1 drainage hole (37) and the No. 2 drainage hole (38) are provided on the No. 3 expansion tube (34), and the No. 3 drainage hole (39) and the No. 4 drainage hole (40) are provided on the No. 4 expansion tube (35). The hole (37) is offset from the third drainage hole (39), the second drainage hole (38) is offset from the fourth drainage hole (40), a third water trough (41), a fourth water trough (42), a first flow trough (43) and a second flow trough (44) are provided in the columnar base (8), the first flow trough (43) corresponds to the third expansion tube (34), the second flow trough (44) corresponds to the fourth expansion tube (35), and the first flow trough (43) and the second flow trough (44) are both connected to the columnar through groove (26), the clean water discharge pipe (9) and the sewage discharge pipe (10) are respectively fixed in the first flow trough (43) and the second flow trough (44), the third water trough (41) is vertically connected to the first drainage outlet (6), and the fourth water trough (42) is vertically connected to the second drainage outlet (7).

6. The activated carbon rod filter element structure according to claim 4, characterized in that: A bracket (45) is fixedly provided on the outer wall of the columnar base (8), a first shaft seat (46) is fixedly provided on the bracket (45), the main water inlet pipe (13) passes through the first shaft seat (46), and an annular cover (47) is fixedly provided on one end of the columnar through groove (26) close to the bracket (45).

7. The activated carbon rod filter element structure according to claim 5, characterized in that: A protrusion (48) is formed on one end of the No. 4 expansion tube (35) away from the columnar connecting block (36), a sealing plate (49) is fixedly provided on one end of the columnar through groove (26) close to the No. 4 expansion tube (35), a horizontal limiting rod (50) is fixedly provided on the sealing plate (49), a limiting truncated cone (51) is formed on one end of the limiting rod (50) penetrating into the columnar through groove (26), a horizontal semicircular pin (52) is formed on the limiting truncated cone (51), a columnar slot (53) is formed inwardly on one side of the protrusion (48) facing the semicircular pin (52), a limiting strip (54) is formed in the columnar slot (53), and the cross section of the limiting strip (54) is a right triangle.

8. The activated carbon rod filter element structure according to claim 6, characterized in that: The water pipe (14) is vertical, and the hydraulic driving member comprises an end pipe (55), a piston (56), a rack (57) and a gear ring (58). The end pipe (55) is coaxially connected to the lower end of the water pipe (14), and the bottom of the end pipe (55) is a closed structure. The piston (56) is arranged in the end pipe (55), the cap end of the piston (56) faces upward, the rod of the piston (56) passes through the end pipe (55) downward, the gear ring (58) is coaxially fixed on the outer wall of the main water inlet pipe (13), the rack (57) is slidably connected to the bracket (45) in the vertical direction, and the rack (57) is meshed with the gear ring (58), the rod of the piston (56) is downwardly fixed to the top of the rack (57), and the elastic reset member is arranged in the end pipe (55).

9. The activated carbon rod filter element structure according to claim 8, characterized in that: The elastic return member comprises a spring (59), which is vertically arranged in the end tube (55) and sleeved on the rod portion of the piston (56). The two ends of the spring (59) respectively contact the cap end of the piston (56) and the inner bottom of the end tube (55). The upper end of the end tube (55) is provided with a branch tube (60), and the branch tube (60) is provided with a solenoid valve (61).

10. The activated carbon rod filter element structure according to claim 6, characterized in that: A second shaft seat (62) is fixedly provided on the bracket (45), and the main water inlet pipe (13) is connected to the second shaft seat (62) after passing through the first shaft seat (46). A fixed pipe (63) is formed on the outer wall of the second shaft seat (62), and the fixed pipe (63) is connected to the main water inlet pipe (13).

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