Low-temperature low-turbidity raw water treatment device with efficient flocculation structure
By using components such as rotating cylinders, impact blocks and filters in low-temperature and low-turbid water treatment device, the problem of difficult flocs and alum removal is solved, efficient flocculation is achieved, and the residue of coagulant is avoided and treatment is improved. Efficiency and safety.
Patent Information
- Application Number
- CN202411510961.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-01-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When existing raw water treatment devices treat low-temperature and low-turbid water, it is difficult to form effective flocs, resulting in alum-running phenomenon and coagulant residues, affecting treatment efficiency and environmental safety.
A low-temperature and low-turbid water treatment device with an efficient flocculation structure was designed. Using components such as rotating cylinders, impact blocks and filters, the floc generation and adhesion area are increased through the mixing and the filters, and the floc generation and adhesion area are reduced. The floc is refluxed through the design of the outlet pipe to improve flocculation efficiency and avoid residues of coagulant.
Without the need to add a coagulant, the flocculation efficiency of low-temperature and low-turbid water is improved, the phenomenon of running alum is reduced, the harm of coagulant residues to the environment and health is avoided, and the efficiency and safety of water treatment are improved.
Smart Images
Figure CN119240883A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of water treatment, and in particular to a low-temperature and low-turbidity raw water treatment device with a high-efficiency flocculation structure. Background Art
[0002] A raw water treatment device is a device that deals with various pollutants and impurities present in raw water from different sources (such as surface water, groundwater, rainwater, etc.) to ensure that the final treated water quality meets the standards for safe drinking or other uses. The raw water treatment device can be used to treat various types of raw water, such as low-temperature and low-turbidity water, high-turbidity water and high-hardness water. The existing device has certain challenges in treating low-temperature and low-turbidity water, because low temperature will increase the viscosity of the raw water, reduce the probability of collision between impurity particles, and there are fewer suspended particles in low-turbidity water, which will make it difficult to form effective flocs in the raw water, resulting in the phenomenon of alum running, causing a large amount of flocculants to remain in the raw water, affecting the efficiency of raw water treatment. Therefore, when the existing raw water treatment device treats low-temperature and low-turbidity raw water, it is necessary to add a large amount of coagulant to the water to promote the formation of flocs in the low-turbidity water. However, this not only increases the cost of raw water treatment, but also causes a large amount of coagulant to remain in the raw water after treatment, which affects the environment and even harms human health. Summary of the invention
[0003] In order to overcome the shortcomings pointed out in the above background technology, the present invention provides a low-temperature and low-turbidity raw water treatment device with a high-efficiency flocculation structure.
[0004] The technical solution is: a low-temperature and low-turbidity raw water treatment device with a high-efficiency flocculation structure, comprising: A kettle body, wherein the kettle body is connected with a water inlet pipe, a feed pipe and a drain pipe; A transmission assembly is arranged on the kettle body; A rotating cylinder is rotatably connected to the kettle body, the transmission assembly is used to drive the rotating cylinder to rotate, and the rotating cylinder is fixedly connected to a plurality of rotating plates distributed in the circumferential direction; The trigger racks have the same number as the number of the rotating plates, and are limitedly slidably connected to the adjacent rotating plates. The kettle body is provided with limited slots, and the trigger racks are slidably matched with the limited slots; There are several impact blocks, which are fixed between two adjacent trigger frames through flexible ropes. When the impact blocks stir the raw water, the adhesion area of the flocs in the water is increased.
[0005] Furthermore, the impact block is provided with a plurality of protrusions for increasing the area on the impact block to which the flocs can adhere.
[0006] Furthermore, the transmission assembly includes: The motor is fixedly connected to the kettle body, the output shaft of the motor is transmitted to the rotating cylinder via a planetary gear set, and the output shaft of the motor is fixedly connected to a stirring member via a rotating shaft.
[0007] Furthermore, it also includes: A rotating frame is fixedly connected to the rotating cylinder, the rotating frame is fixedly connected to a first auger, the rotating frame is provided with first holes having the same number as the rotating plates, and the first holes are located between two adjacent rotating plates; A fixed plate is fixedly connected to the kettle body, a second hole is arranged on the fixed plate, the fixed plate is rotatably connected to the rotating frame, the first hole is communicated with the second hole, and the first hole is blocked with the fixed plate; The thermal insulation layer is fixedly connected to the kettle body and is located below the first auger.
[0008] Furthermore, it also includes: The first filter screen has the same number as the first holes and is arranged in the first holes to block flocs in the raw water.
[0009] Furthermore, the rotation direction of the first auger from top to bottom is opposite to the rotation direction of the rotating plate.
[0010] Furthermore, the angle between the line from the projection of the water inlet pipe to the axis of the kettle body and the line from the projection of the second hole to the axis of the kettle body is A, and the angle formed by two adjacent rotating plates to the axis of the kettle body is B, and A>B.
[0011] Furthermore, it also includes: A second auger is fixedly connected to the rotating shaft of the motor output shaft and is located inside the rotating cylinder and the rotating frame. The rotating cylinder is rotatably connected and communicated with a rotating ring, and the rotating ring is communicated with a water outlet pipe rotatably connected to the kettle body. The water outlet pipe is communicated with an external water pump, and a notch is provided on the water outlet pipe; A transmission member, arranged on the kettle body, for driving the water outlet pipe to rotate; The second filter screen is arranged in the water outlet pipe, and the notch on the water outlet pipe is located between the rotating cylinder and the second filter screen.
[0012] Furthermore, it also includes: The rotating block is rotatably connected to the water outlet pipe and cooperates with the gap of the water outlet pipe for sealing.
[0013] Furthermore, a guide portion is provided on the rotating block for guiding the water flow and the flocs.
[0014] Compared with the prior art, the present invention has the following advantages: 1. The present invention uses the impact block to adhere to the particles and flocs in the raw water, and uses the up and down movement of the impact block to increase the probability of contact with the particles and flocs in the raw water, so as to prevent the flocs in the low-temperature and low-turbidity raw water from being difficult to coagulate. Without adding a coagulant, the present invention reduces the occurrence of alum running and avoids residual coagulant in the raw water, so as to prevent the residual coagulant in the raw water from affecting human health; 2. Block part of the flocs through the first filter, so that part of the flocs remain on the upper side of the first filter, so that when the next raw water and flocculant enter between the two rotating plates, part of the flocs will exist in the raw water, adsorbing the impurity particles in the raw water, so as to improve the generation efficiency of the flocs, and further improve the flocculation efficiency of low-temperature and low-turbidity water; 3. The rotating block is driven to rotate through the outlet pipe. The rotating block rotates and falls due to its own gravity, so that the gap of the outlet pipe is opened, and the raw water with flocs flows along the guide part to between two adjacent rotating plates, so that part of the flocs flows back between the two rotating plates. The flocs absorb the impurity particles in the raw water to improve the generation efficiency of the flocs, thereby improving the flocculation efficiency of low-temperature and low-turbidity water. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural cross-sectional view of the kettle body of the present invention; Figure 3 It is a three-dimensional structural cross-sectional view of the kettle body and the thermal insulation layer of the present invention; Figure 4 It is a three-dimensional structural cross-sectional view of the kettle body, rotating cylinder and rotating frame of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the limiting groove of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the impact block of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the transmission member of the present invention; Figure 8 It is a three-dimensional structural cross-sectional view of the water outlet pipe of the present invention; Fig. 9 It is a three-dimensional structural cross-sectional view of the rotating block of the present invention.
[0016] Among them, the drawings include the following figure marks: 1. kettle body, 101. water inlet pipe, 102. feeding pipe, 103. drain pipe, 2. transmission assembly, 201. motor, 202. planetary gear set, 203. stirring member, 3. rotating cylinder, 301. rotating plate, 302. trigger frame, 303. limiting groove, 304. impact block, 4. rotating frame, 401. first auger, 402. first filter screen, 403. fixed plate, 5. thermal insulation layer, 6. second auger, 601. water outlet pipe, 602. transmission member, 603. second filter screen, 7. rotating block, 701. guide part. DETAILED DESCRIPTION
[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0018] A low-temperature and low-turbidity raw water treatment device with an efficient flocculation structure, such as Figure 1-Figure 6 As shown, it comprises: a kettle body 1, a control terminal not shown in the figure is arranged outside the kettle body 1, the kettle body 1 is connected with a water inlet pipe 101, a feeding pipe 102 and a drain pipe 103, the water inlet pipe 101 and the feeding pipe 102 are located at the upper part of the kettle body 1, and the drain pipe 103 is located at the lower part of the kettle body 1, and a turbidity meter can be installed in the water inlet pipe 101 to detect the turbidity of the raw water in the water inlet pipe 101, so as to know the amount of flocculant required for the raw water in the kettle body 1; a transmission component 2, which is arranged on the kettle body 1; a rotating cylinder 3, which is rotatably connected to the kettle body 1, and the transmission component 2 is used to drive the rotating cylinder 3 to rotate, and the rotating cylinder 3 is fixedly connected with a plurality of rotating plates 301 distributed in the circumferential direction; a trigger frame 302, the number of which is the same as the number of the rotating plates 301, and is limitedly slidably connected to the adjacent rotating plates 301, and the upper side of the rotating plate 301 is provided with The symmetrically distributed inclined surfaces guide the added raw water to the two sides of the rotating plate 301. A limiting groove 303 is arranged in the kettle body 1. The limiting groove 303 is an annular closed groove, and the limiting groove 303 is wavy. The trigger frame 302 slides with the limiting groove 303, so that the trigger frame 302 moves back and forth up and down when moving along the limiting groove 303; there are several impact blocks 304, which are fixed between two adjacent trigger frames 302 through flexible ropes. When the impact blocks 304 stir the raw water, the adhesion area of the flocs in the water is increased, and the flocs in the low-temperature and low-turbidity raw water are promoted to clumping and condensing, so as to increase the generation of flocs in the raw water, thereby reducing the occurrence of alum running, and further improving the flocculation efficiency of the raw water. A plurality of protrusions are arranged on the impact blocks 304 to increase the adhesion area of the flocs on the impact blocks 304.
[0019] like Figure 1-Figure 4As shown, the transmission assembly 2 includes: a motor 201, which is fixedly connected to the kettle body 1, and the motor 201 is electrically connected to the control terminal. The output shaft of the motor 201 is transmitted to the rotating cylinder 3 through a planetary gear set 202. The sun gear of the planetary gear set 202 is fixedly connected to the output shaft of the motor 201, the planetary gears of the planetary gear set 202 are rotationally connected to the kettle body 1, the ring gear of the planetary gear set 202 is fixedly connected to the rotating cylinder 3, and the output shaft of the motor 201 is fixedly connected to a stirring member 203 through a rotating shaft. The stirring member 203 is used to stir the raw water and the flocculant to promote the mixing of impurities in the raw water and the flocculant.
[0020] The above embodiment aims to solve the problem that flocs in low-temperature and low-turbidity raw water are difficult to coagulate, resulting in the phenomenon of alum running away. The specific working principle is: When the operator needs to use the device to treat low-temperature and low-turbidity raw water (hereinafter referred to as raw water), the operator continuously adds raw water into the kettle body 1 through the water inlet pipe 101, and then continuously adds flocculant into the kettle body 1 through the feeding pipe 102. After entering the kettle body 1, the raw water and flocculant first fall between two adjacent rotating plates 301, and then the motor 201 is turned on through the control terminal. The output shaft of the motor 201 drives the rotating cylinder 3 through the planetary gear set 202. The output shaft of the motor 201 drives the stirring member 203 through the rotating shaft. The stirring member 203 mixes and stirs the raw water and flocculant in the kettle body 1, and promotes the mixing of the flocculant and the suspended particles in the raw water through stirring, thereby promoting the formation of flocs. At the same time, the rotating cylinder 3 rotates The trigger frame 302 rotates along the limit groove 303, so that the trigger frame 302 continuously moves up and down during the rotation process. The two adjacent trigger frames 302 respectively drive all the impact blocks 304 located between them to move up and down through the adjacent flexible ropes, so as to stir the raw water to promote the formation of flocs. At the same time, the impact blocks 304 move up and down, so that the flocs in the water are adhered to the impact blocks 304, and the protrusions on the impact blocks 304 can increase the adhesion area of the flocs, promote the aggregation of flocs in the low-temperature and low-turbidity raw water, so as to improve the generation of flocs in the raw water, thereby reducing the occurrence of alum running, and further improving the flocculation efficiency of the raw water.
[0021] When the operator needs to stop using the device, the operator turns off the motor 201 through the control terminal and discharges the raw water after the flocculation reaction in the kettle body 1 through the drain pipe 103. The operator then collects and settles the raw water and cleans the kettle body 1 for the next use.
[0022] Based on the above embodiments, Figure 2-Figure 4 and Figure 6As shown, it also includes: a rotating frame 4, which is fixedly connected to the rotating cylinder 3, and the vertical section of the rotating frame 4 is T-shaped. The rotating frame 4 is fixedly connected to a first auger 401, and the rotating frame 4 is provided with a first hole having the same number as the rotating plate 301, and the first hole is located between two adjacent rotating plates 301. The first filter screen 402 is used to block the flocs so that part of the flocs are retained on the upper side of the first filter screen 402; a fixed plate 403, which is fixedly connected to the kettle body 1, and a second hole is provided on the fixed plate 403. The fixed plate 403 is rotatably connected to the rotating frame 4, and the first hole is connected and matched with the second hole. The first The hole is sealed with the fixed plate 403; the insulation layer 5 is fixedly connected to the kettle body 1 and is located below the first auger 401, which is used to keep the raw water in the kettle body 1 warm. A heating element can be set on the lower side of the kettle body 1 to heat the raw water to increase the temperature of the raw water and the flocculant, thereby improving the efficiency of floc formation in the low-temperature and low-turbidity raw water to reduce the occurrence of alum running; the rotation direction of the first auger 401 from top to bottom is opposite to the rotation direction of the rotating plate 301, and through the transmission of the planetary gear set 202, the rotation direction of the rotating cylinder 3 is opposite to the rotation direction of the stirring element 203. The rotation angle here is Figure 1 With the top view as a reference, the rotating plate 301 pushes the raw water to flow counterclockwise, and the raw water flows along the first auger 401. The stirring element 203 stirs the raw water clockwise, so that the raw water continuously forms turbulence in the kettle body 1 to increase the mixing rate of the raw water and the flocculant. The angle between the line from the projection of the water inlet pipe 101 to the axis of the kettle body 1 and the line from the projection of the second hole to the axis of the kettle body 1 is A, and the angle formed by two adjacent rotating plates 301 to the axis of the kettle body 1 is B, A>B, so as to prevent the space between the two adjacent rotating plates 301 from being connected to the water inlet pipe 101 when the first hole is aligned with the second hole, thereby avoiding water inflow and water outflow between the two rotating plates 301 at the same time, and preventing the raw water without flocculation from being directly discharged into the second hole.
[0023] like Figure 3 and Figure 6 As shown, it also includes: a first filter screen 402, which has the same number as the first holes and is arranged in the first holes to block flocs in the raw water.
[0024] The above embodiment aims to prolong the flocculation time of raw water and keep the raw water warm, so as to improve the efficiency of floc formation in low-temperature and low-turbidity raw water. The specific working principle is as follows: During the rotation of the rotating cylinder 3, the rotating cylinder 3 drives the first auger 401 to rotate through the rotating frame 4. At the same time, the rotating frame 4 drives all the first holes and all the first filter screens 402 thereon to rotate. All the first filter screens 402 are alternately connected with the second holes. When one of the first holes is connected with the second hole, the raw water and flocculant between the two adjacent rotating plates 301 will flow to the second holes through the first filter screen 402 (the first filter screen 402 blocks part of the flocs, so that part of the flocs remain on the upper side of the first filter screen 402, and there is a part of the flocs between the two adjacent rotating plates 301, so that the latter When the continuously injected raw water and flocculant enter between the two rotating plates 301, there is a part of flocs in the raw water, which adsorb the impurity particles in the raw water to improve the floc formation efficiency, thereby improving the flocculation efficiency of low-temperature and low-turbidity water). The raw water and flocculant in the second hole flow into the first auger 401, and the raw water and flocculant flow downward along the first auger 401. The first auger 401 prolongs the mixing time of the raw water and flocculant, and facilitates the insulation layer 5 to keep the raw water and flocculant in the kettle body 1 warm, so as to increase the temperature of the raw water and flocculant, thereby improving the efficiency of floc formation in the low-temperature and low-turbidity raw water, so as to reduce the occurrence of alum running.
[0025] Based on the above embodiments, Figure 2 , Figure 7-Figure 9 As shown, it also includes: a second auger 6, which is fixedly connected to the rotating shaft of the output shaft of the motor 201 and is located in the rotating cylinder 3 and the rotating frame 4. The rotating cylinder 3 is rotatably connected and communicated with a rotating ring, and the rotating ring is communicated with a water outlet pipe 601 rotatably connected to the kettle body 1. The water outlet pipe 601 is communicated with an external water pump, and the external water pump is electrically connected to the control terminal. A notch is provided on the water outlet pipe 601; a transmission member 602 is provided on the kettle body 1, and is used to drive the water outlet pipe 601 to rotate. The transmission member 602 is composed of a motor and two spur gears meshing with each other. The motor is fixedly connected to the kettle body 1, and the output shaft of the motor is fixedly connected to one spur gear, and the water outlet pipe 601 is fixedly connected to the other spur gear; a second filter screen 603 is provided in the water outlet pipe 601, and the notch on the water outlet pipe 601 is located between the rotating cylinder 3 and the second filter screen 603.
[0026] like Figure 7-Figure 9 As shown, it also includes: a rotating block 7, which is rotatably connected to the water outlet pipe 601 and cooperates with the gap sealing of the water outlet pipe 601. A guide part 701 is provided on the rotating block 7 to guide the water flow and flocs, and guide the flocs to between two adjacent rotating plates 301 located on the lower side of the water inlet pipe 101, so as to increase the floc content close to the two rotating plates 301, and utilize the guiding effect of the guide part 701 to prevent the flocs from directly passing through the first hole into the second hole. The flocs adsorb the impurity particles in the raw water to improve the generation efficiency of the flocs, thereby improving the flocculation efficiency of low-temperature and low-turbidity water.
[0027] The specific working principle of the above embodiment is as follows: After the reaction between the raw water and the flocculant in the kettle body 1 is completed, the output shaft of the motor 201 drives the second auger 6 to rotate, and the flocculated raw water is driven by the second auger 6 to the outlet pipe 601, and the external water pump extracts the flocculated raw water through the outlet pipe 601. The second filter screen 603 in the outlet pipe 601 filters the flocs in the raw water, and then the extracted and filtered raw water is collected by the operator, and the operator can drive the outlet pipe 601 to rotate 90° clockwise through the transmission member 602 (the rotation reference is Figure 1 As shown in the right view of the figure, the outlet pipe 601 drives the rotating block 7 to rotate 90°, and the rotating block 7 rotates under the influence of its own gravity, so that the gap of the outlet pipe 601 is opened, and the raw water with flocs flows along the guide part 701 to between the two adjacent rotating plates 301, so that part of the flocs flows back to between the two rotating plates 301, and the flocs adsorb the impurity particles in the raw water to improve the generation efficiency of the flocs, thereby improving the flocculation efficiency of low-temperature and low-turbidity water. When the raw water in the kettle body 1 no longer has the alum running phenomenon, the operator controls the transmission member 602 to reset through the control terminal, so that the outlet pipe 601 drives the rotating block 7 to rotate in the opposite direction, and the rotating block 7 rotates under its own gravity and blocks the gap of the outlet pipe 601. Finally, the operator can turn off the motor of the transmission member 602 through the control terminal.
[0028] When the operator needs to stop using the device, the operator turns off the motor 201 and the external water pump through the control terminal, discharges the raw water remaining in the kettle body 1 through the drain pipe 103, and cleans the kettle body 1 for the next use.
[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A low-temperature and low-turbidity raw water treatment device with an efficient flocculation structure, characterized in that: include: A kettle body (1), wherein the kettle body (1) is connected to a water inlet pipe (101), a feed pipe (102) and a drain pipe (103); A transmission assembly (2) is arranged on the kettle body (1); A rotating cylinder (3) is rotatably connected to the kettle body (1); the transmission assembly (2) is used to drive the rotating cylinder (3) to rotate; the rotating cylinder (3) is fixedly connected to a plurality of rotating plates (301) distributed in the circumferential direction; The trigger frames (302) are the same in number as the rotating plates (301), and are slidably connected to adjacent rotating plates (301) in a limited manner. A limited groove (303) is provided in the kettle body (1), and the trigger frames (302) are slidably matched with the limited groove (303); There are a plurality of impact blocks (304) which are fixedly connected between two adjacent trigger frames (302) via flexible ropes. When the impact blocks (304) stir the raw water, the adhesion area of the flocs in the water is increased.
2. A low-temperature and low-turbidity raw water treatment device with a high-efficiency flocculation structure according to claim 1, characterized in that: The impact block (304) is provided with a plurality of protrusions, which are used to increase the area on the impact block (304) to which flocs can adhere.
3. A low-temperature and low-turbidity raw water treatment device with a high-efficiency flocculation structure according to claim 1, characterized in that: The transmission assembly (2) comprises: The motor (201) is fixedly connected to the kettle body (1); the output shaft of the motor (201) and the rotating cylinder (3) are driven via a planetary gear set (202); the output shaft of the motor (201) is fixedly connected to a stirring member (203) via a rotating shaft.
4. A low-temperature and low-turbidity raw water treatment device with a high-efficiency flocculation structure according to claim 3, characterized in that: include: A rotating frame (4) is fixedly connected to the rotating cylinder (3), the rotating frame (4) being fixedly connected to a first auger (401), the rotating frame (4) being provided with the same number of first holes as the rotating plates (301), the first holes being located between two adjacent rotating plates (301); A fixed plate (403) is fixedly connected to the kettle body (1), a second hole is provided on the fixed plate (403), the fixed plate (403) is rotatably connected to the rotating frame (4), the first hole is in communication with the second hole, and the first hole is in sealing cooperation with the fixed plate (403); The thermal insulation layer (5) is fixedly connected to the kettle body (1) and is located below the first auger (401).
5. A low-temperature and low-turbidity raw water treatment device with a high-efficiency flocculation structure according to claim 4, characterized in that: include: The first filter screen (402), which has the same number as the first holes, is arranged in the first holes and is used to block flocs in the raw water.
6. A low-temperature and low-turbidity raw water treatment device with a high-efficiency flocculation structure according to claim 4, characterized in that: The top-down rotation direction of the first auger (401) is opposite to the rotation direction of the rotating plate (301).
7. A low-temperature and low-turbidity raw water treatment device with a high-efficiency flocculation structure according to claim 6, characterized in that: The angle between the line connecting the projection of the water inlet pipe (101) to the axis of the kettle body (1) and the line connecting the projection of the second hole to the axis of the kettle body (1) is A, and the angle formed by two adjacent rotating plates (301) to the axis of the kettle body (1) is B, and A>B.
8. A low-temperature and low-turbidity raw water treatment device with a high-efficiency flocculation structure according to claim 7, characterized in that: include: a second auger (6) fixedly connected to the rotating shaft of the output shaft of the motor (201) and located inside the rotating cylinder (3) and the rotating frame (4); a rotating ring is rotatably connected to and communicated with the rotating cylinder (3); the rotating ring is communicated with a water outlet pipe (601) rotatably connected to the kettle body (1); the water outlet pipe (601) is communicated with an external water pump; a notch is provided on the water outlet pipe (601); A transmission member (602) is arranged on the kettle body (1) and is used to drive the water outlet pipe (601) to rotate; The second filter screen (603) is arranged in the water outlet pipe (601), and the notch on the water outlet pipe (601) is located between the rotating cylinder (3) and the second filter screen (603).
9. A low-temperature and low-turbidity raw water treatment device with a high-efficiency flocculation structure according to claim 8, characterized in that: include: The rotating block (7) is rotatably connected to the water outlet pipe (601) and cooperates with the gap of the water outlet pipe (601) to seal.
10. A low-temperature and low-turbidity raw water treatment device with a high-efficiency flocculation structure according to claim 9, characterized in that: The rotating block (7) is provided with a guide portion (701) for guiding the water flow and the flocs.