Flocculating agent preparing and adding device

Abstract

The invention relates to the field of flocculants, in particular to a flocculant preparing and adding device, solves the problems that a flocculant cannot be prepared universally and efficiently and cannot be added uniformly in the prior art, and provides the following scheme. The device comprises a base, a preparation cylinder, a pipeline, a solid reagent tank, a liquid reagent tank, a sealing cover, a rotating shaft, a disc seat, a telescopic rod, a dispersing rod, a telescopic piece, a connecting plate, an L-shaped rack, a motor, a stirring rod and a gear, a driving assembly is slidably arranged in the preparation cylinder, a linkage assembly is arranged in the preparation cylinder, and the linkage assembly is used for driving the driving assembly to rotate when the connecting plate moves upwards. And the sealing covers on the two sides are driven to get close to each other so as to seal and block the pipeline, and a feeding valve is installed at the lower end of the preparation cylinder. The device can be used for efficiently preparing a flocculating agent and uniformly adding the flocculating agent, and meanwhile, the flocculating agent is also convenient to stably store.

Description

Technical Field

[0001] The present invention relates to the field of flocculants, in particular to a preparation and dosing device for flocculants. Background Art

[0002] Flocculants are substances that can cause suspended particles in a liquid to aggregate into larger particles and precipitate, and are widely used in many fields such as water treatment, papermaking, and food processing. The principles of flocculants mainly include compression of the double electric layer, adsorption bridging, and network capture and sweeping.

[0003] Compression of the double electric layer: Flocculant ions reduce the charge on the surface of suspended particles through electrostatic action, thinning the thickness of the double electric layer, reducing the repulsive force between particles, and thus promoting the particles to approach and aggregate each other.

[0004] Adsorption bridging: Flocculant molecules have a long chain-like structure and can adsorb on the surfaces of multiple particles. By bridging, the particles are connected together to form larger flocs.

[0005] Network capture and sweeping: The precipitate formed by the hydrolysis of the flocculant captures and sweeps the surrounding suspended particles like a net during the sedimentation process, realizing solid-liquid separation.

[0006] The physical states of flocculants include solid powders, granules, etc., and also liquids. It can be seen that flocculants have various physical forms. Before specific dosing, the flocculant solutions or dilutions in various physical states need to be prepared. However, before the existing flocculants are dosed, generally, they are manually weighed, dissolved or diluted, and stirred evenly before dosing. Such an operation has low efficiency, and the preparation methods of flocculants in different physical states are generally different, which also increases the difficulty of the preparation operation. There will also be large errors in manual operations. Therefore, a flocculant preparation and dosing device is proposed. Summary of the Invention

[0007] In order to overcome the deficiencies of the prior art, the present invention proposes a flocculant preparation and dosing device that can efficiently prepare flocculants in different physical states, and has simple operation and high precision.

[0008] To solve the above technical problems, the basic technical solution proposed by the present invention is as follows:

[0009] A flocculant preparation and dosing device includes a base, a preparation cylinder is installed on the base, a pipeline is connected to the preparation cylinder, and a solid reagent tank and a liquid reagent tank are respectively connected through the pipeline in a through manner. A sealing cover for covering the pipeline is slidably connected to the inner wall of the upper part of the preparation cylinder. A rotating shaft is rotatably connected to the preparation cylinder. Disc seats are symmetrically sleeved on both sides of the rotating shaft, and telescopic rods are arrayed on the outer side surfaces of the disc seats and are connected to a dispersion rod through the telescopic rods. A telescopic member is installed in the preparation cylinder, and the lower output end of the telescopic member is connected to a connecting plate;

[0010] The lower end of the connecting plate is connected with an L-shaped rack, and a motor is installed at the lower end of the L-shaped rack. The output end of the motor is connected with a stirring rod. A first gear meshing with the L-shaped rack is sleeved on the rotating shaft. A driving assembly is slidably arranged in the preparation cylinder. The driving assembly is used to drive the stretching telescopic rods on which the dispersing rods are located to move away from each other when the connecting plate moves downward. A linkage assembly is arranged in the preparation cylinder. The linkage assembly is used to drive the sealing covers on both sides to approach each other when the connecting plate moves upward, so as to seal and block the pipeline. A feeding valve is installed at the lower end of the preparation cylinder.

[0011] Preferably, a sliding rod frame is connected to the inner wall of the preparation cylinder, and the sliding rod frame is respectively located on both sides of the pipeline. Both sides of the sealing cover are slidably sleeved on the sliding rod frames on both sides. A first spring sleeved on the outer side of the sliding rod frame is connected between the sealing cover and the sliding rod frame.

[0012] Preferably, the driving assembly includes a rotating ring, a collar, a sliding plate, and a top plate. The rotating ring is slidably sleeved on the rotating shafts on both sides of the first gear. A first rotating rod is rotatably connected between the rotating ring and the dispersing rod on its respective side. The collar is rotatably sleeved on the side where the two rotating rings approach each other. The sliding plates are symmetrically slidably arranged on both sides in the preparation cylinder. A second rotating rod is rotatably connected between each sliding plate and the collar on its respective side. The top plate is connected to the connecting plate and is in contact with the upper end of the sliding plate in a mating manner.

[0013] Preferably, a guide rod is connected in the preparation cylinder. The sliding plate is slidably sleeved on the outer side of the guide rod and is limited at the lower end of the guide rod. A second spring sleeved on the outer side of the guide rod is connected between the sliding plate and the lower end of the guide rod.

[0014] Preferably, the linkage assembly includes an inclined block and a push rod. The inclined block is connected to the lower side of the sealing cover. The push rod is connected to the connecting plate. The push rod is in sliding contact with the inclined surface of the inclined block in a fitting manner.

[0015] Preferably, a material distributing plate is rotatably sleeved at the lower end of the feeding valve. A plurality of spraying ports communicating with the feeding valve are radially provided on the material distributing plate. A toothed ring is sleeved on the outer side of the material distributing plate. A first servo motor is installed at the bottom of the preparation cylinder, and the output end of the first servo motor is connected with a second gear meshing with the toothed ring.

[0016] Preferably, a second servo motor is installed in the solid reagent tank, and the output end of the second servo motor is connected with a rotating rod. A spiral surface is sleeved on the lower end surface of the rotating rod. The lower end of the rotating rod and the spiral surface both pass through the pipeline and extend into the preparation cylinder. The sealing cover is sleeved on the outer sides of the extending ends of the rotating rod and the spiral surface.

[0017] Preferably, an electromagnetic valve is installed in the pipeline connected to the liquid reagent tank.

[0018] Preferably, a water injection port is provided at the upper end of the preparation cylinder, and adding pipes are provided on both the solid reagent tank and the liquid reagent tank.

[0019] Preferably, a sealing gasket is installed on one side surface of the two sealing covers that are close to each other.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The technical solution of the present invention can add flocculants with different physical and chemical properties into the preparation cylinder respectively through the provided solid reagent tank and liquid reagent tank, and then dissolve or dilute the preparation by injecting water, which improves the functionality of the equipment. At the same time, a stirring rod connected to the motor is provided in the preparation cylinder, which can stir the solution in the preparation cylinder driven by the motor to accelerate dissolution or dilution. At the same time, it can also drive the connecting plate to move up and down in cooperation with the telescopic member, so that the stirring rod can turn the solution up and down while stirring, improving the stirring efficiency;

[0022] 2. The technical solution of the present invention is provided with a dispersion rod on the rotating shaft, and a first gear meshing with the L-shaped rack on the rotating plate is sleeved on the rotating shaft. Then, when the rotating plate moves up and down, the rotating shaft and each dispersion rod can be driven to rotate, so that the solid reagent or liquid reagent falling from the two side pipes can be dispersed by the dispersion rod, improving its dissolution efficiency in the water in the preparation cylinder and also enabling the maximum effect of the flocculant to be exerted. Each dispersion rod can also drive the driving component through the connecting plate and move away from the rotating shaft to form a longer dispersion effect. At the same time, when preparing a small amount of flocculant solution, the relatively lower dispersion rod can also effectively contact the solution and form a stirring effect on the solution to cooperate with the stirring rod to obtain better dissolution efficiency and effect;

[0023] 3. The technical solution of the present invention can drive the two sealing covers to approach each other through the linkage component to close and cover the end of the pipe in the preparation cylinder, avoiding the humid air generated during the preparation of the solution, cleaning, etc. in the preparation cylinder from flowing back into the solid reagent tank or the liquid reagent tank, which is beneficial to the long-term preservation of the solid reagent in the solid reagent tank or the liquid reagent in the liquid reagent tank. Description of the Drawings

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a sectional structural schematic diagram of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the present invention without a base;

[0027] Figure 4 It is a structural schematic diagram inside the solid reagent tank of the present invention;

[0028] Figure 5 Schematic structural diagram inside the preparation cylinder of the present invention;

[0029] Figure 6 Schematic structural diagram of the drive assembly of the present invention;

[0030] Figure 7 Schematic structural diagram of the linkage assembly of the present invention;

[0031] Figure 8 Schematic structural diagram at the feeding valve of the present invention.

[0032] Explanation of reference numerals:

[0033] 1. Base; 2. Preparation cylinder; 3. Pipeline; 4. Solid reagent tank; 5. Liquid reagent tank; 6. Feeding valve; 7. Slide rod frame; 8. Sealing cover; 9. First spring; 10. Inclined block; 11. Telescopic member; 12. Connecting plate; 13. Push rod; 14. L-shaped rack; 15. Motor; 16. Stirring rod; 17. Rotating shaft; 18. First gear; 19. Disc seat; 20. Telescopic rod; 21. Dispersion rod; 22. Rotating ring; 23. First rotating rod; 24. Collar; 25. Guide rod; 26. Slide plate; 27. Second spring; 28. Second rotating rod; 29. Top plate; 30. Material distribution plate; 31. Spraying port; 32. Tooth ring; 33. First servo motor; 34. Second gear; 35. Second servo motor; 36. Rotating rod; 37. Spiral surface; 38. Solenoid valve; 39. Water injection port; 40. Adding pipe. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached Figure 1 to the attached Figure 8 It is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] As Figures 1-5, as shown in Figures 8, the present invention discloses a device for preparing and dosing a flocculant, including a base 1. A preparation cylinder 2 is installed on the base 1. A pipeline 3 is connected to the preparation cylinder 2 and is respectively connected through the pipeline 3 to a solid reagent tank 4 and a liquid reagent tank 5. A sealing cover 8 for covering the pipeline 3 is slidably connected to the inner upper wall of the preparation cylinder 2. A rotating shaft 17 is rotatably connected in the preparation cylinder 2. Disc seats 19 are symmetrically sleeved on both sides of the rotating shaft 17. And telescopic rods 20 are arrayedly installed on the outer side surfaces of the disc seats 19 and are connected to dispersion rods 21 through the telescopic rods 20. A telescopic member 11 is installed in the preparation cylinder 2, and the lower output end of the telescopic member 11 is connected to a connecting plate 12. Among them, the solid reagent tank 4 and the liquid reagent tank 5 are also connected to the base 1 to achieve stable support;

[0037] The lower end of the connecting plate 12 is connected to an L-shaped rack 14, and a motor 15 is installed at the lower end of the L-shaped rack 14. The output end of the motor 15 is connected to a stirring rod 16. A gear one 18 meshing with the L-shaped rack 14 is sleeved on the rotating shaft 17. A driving assembly is slidably arranged in the preparation cylinder 2. The driving assembly is used to drive the telescopic rods 20 connected to the respective dispersion rods 21 to move away from each other when the connecting plate 12 moves downward. A linkage assembly is arranged in the preparation cylinder 2. The linkage assembly is used to drive the sealing covers 8 on both sides to approach each other when the connecting plate 12 moves upward to seal and block the pipeline 3. A feeding valve 6 is installed at the lower end of the preparation cylinder 2.

[0038] A sliding rod frame 7 is connected to the inner wall of the preparation cylinder 2, and the sliding rod frames 7 are respectively on both sides of the pipeline 3. Both sides of the sealing cover 8 are slidably sleeved on the sliding rod frames 7 on both sides. A first spring 9 sleeved on the outer side of the sliding rod frame 7 is connected between the sealing cover 8 and the sliding rod frame 7, as Figure 5 shown. Two sliding rod frames 7 connected to the inner wall of the preparation cylinder 2 are symmetrically and parallelly arranged on both sides of each end of the pipeline 3 in the preparation cylinder 2. The sealing cover 8 can stably slide on the sliding rod frame 7. And the setting of the first spring 9 enables the sealing covers 8 on both sides of each pipeline 3 to slide away from each other without external force, opening the lower end of the pipeline 3.

[0039] A distribution plate 30 is rotatably sleeved at the lower end of the feeding valve 6. A plurality of spraying ports 31 communicating with the feeding valve 6 are radially provided on the distribution plate 30. And a toothed ring 32 is sleeved on the outer side of the distribution plate 30. A servo motor one 33 is installed at the bottom of the preparation cylinder 2, and the output end of the servo motor one 33 is connected to a gear two 34 meshing with the toothed ring 32, as Figure 8 shown. The prepared flocculant solution will flow into the distribution plate 30 through the opening of the feeding valve 6. The distribution plate 30 can be driven to rotate through the meshing of the toothed ring 32 and the gear two 34. Then, the flocculant solution in the distribution plate 30 can be sprayed from the circumferences of the respective spraying ports 31 into the water to be treated through the rotation of the distribution plate 30, achieving a more uniform dosing effect of the flocculant solution.

[0040] A servo motor two 35 is installed inside the solid reagent tank 4, and the output end of the servo motor two 35 is connected with a rotating rod 36. A spiral surface 37 is sleeved on the lower end surface of the rotating rod 36. The lower end of the rotating rod 36 and the spiral surface 37 both pass through the pipeline 3 and extend into the preparation cylinder 2. The sealing cover 8 is sleeved on the outside of the extending ends of the rotating rod 36 and the spiral surface 37. In this way, when the reagent in the solid reagent tank 4 needs to be added into the preparation cylinder 2 to prepare the flocculant solution, start the servo motor two 35 to drive the rotating rod 36 and the spiral surface 37 to rotate, and the reagent in the solid reagent tank 4 can be added into the preparation cylinder 2.

[0041] A solenoid valve 38 is installed in the pipeline 3 connected to the liquid reagent tank 5. In this way, when the reagent in the liquid reagent tank 5 needs to be added into the preparation cylinder 2 to prepare the flocculant solution, open the solenoid valve 38, and the reagent in the solid reagent tank 4 can be added into the preparation cylinder 2.

[0042] For the accurate metering of adding materials from the solid reagent tank 4 and the liquid reagent tank 5 into the preparation cylinder 2, an existing weighing and metering device can be used to detect the weights of the reagents before and after in the solid reagent tank 4 and the liquid reagent tank 5 to achieve accurate feeding. A solenoid valve 38 with a capacity metering function can also be used. Due to the setting of the spiral surface 37 in the solid reagent tank 4, it has a stable amount of feeding effect when it rotates one circle, so it is convenient to control.

[0043] A water injection port 39 is opened at the upper end of the preparation cylinder 2. Adding pipes 40 are provided on both the solid reagent tank 4 and the liquid reagent tank 5. The setting of the water injection port 39 facilitates injecting water into the preparation cylinder 2 to prepare the solution.

[0044] Sealing washers are installed on the mutually approaching side surfaces of the two sealing covers 8 to further improve the moisture-proof sealing effect on the pipeline 3 when the two sealing covers 8 approach each other.

[0045] During specific use:

[0046] First, inject an appropriate amount of water into the preparation cylinder 2. According to the need, add materials from the solid reagent tank 4 or the liquid reagent tank 5 into the preparation cylinder 2. Then control the telescopic member 11 to reciprocally expand and contract, which can drive the connecting plate 12, the L-shaped rack 14, the motor 15, and the stirring rod 16 to move up and down. At the same time, the stirring rod 16 can be driven by the motor 15 to rotate, thereby stirring and turning over the solution in the preparation cylinder 2 up and down, accelerating the dissolution of the reagent and water, and improving the preparation efficiency of the flocculant;

[0047] The up and down reciprocating movement of the L-shaped rack 14 can drive the rotating shaft 17 to rotate through the first gear 18, and then drive each dispersion rod 21 to rotate. The dispersion rods 21 are located below the pipeline 3 and can disperse the materials added from the solid reagent tank 4 or the liquid reagent tank 5, thereby improving the dissolution efficiency and uniformity of the reagent and ensuring the stability of the preparation of the flocculant solution.

[0048] Example Two:

[0049] As Figures 1-6 shown in Figures 7 and 8, the present invention discloses a device for preparing and adding a flocculant. Compared with Example One, the structure of the driving component is disclosed in this example.

[0050] The driving component includes a rotating ring 22, a collar 24, a sliding plate 26, and a top plate 29. The rotating ring 22 is slidably sleeved on the rotating shafts 17 on both sides of the first gear 18. A first rotating rod 23 is rotatably connected between the rotating ring 22 and the dispersion rod 21 on each side. The collar 24 is rotatably sleeved on the side where the two rotating rings 22 are close to each other. The sliding plate 26 is symmetrically and slidably arranged on both sides inside the preparation cylinder 2. A second rotating rod 28 is rotatably connected between each sliding plate 26 and the collar 24 on its respective side. The top plate 29 is connected to the connecting plate 12 and is in contact and abutted against the upper end of the sliding plate 26.

[0051] A guide rod 25 is connected inside the preparation cylinder 2. The sliding plate 26 is slidably sleeved on the outer side of the guide rod 25 and is limited at the lower end of the guide rod 25. A second spring 27 sleeved on the outer side of the guide rod 25 is connected between the sliding plate 26 and the lower end of the guide rod 25.

[0052] As Figure 5 shown in Figures 18 and 6 19, at this time, the sealing cover 8 is in an open state with respect to the pipeline 3. The telescopic member 11 can push the connecting plate 12 downward, driving the top plate 29 to gradually contact and abut against the upper end of the sliding plate 26. By pushing the two collars 24 away from the rotating rings 22 through the second rotating rod 28, the dispersion rods 21 are pulled away from each other through the first rotating rod 23, and the telescopic rod 20 is stretched, thus forming a larger dispersion range. After that, the connecting plate 12 can still move up and down reciprocally, driving the dispersion rods 21 to extend or contract reciprocally within a larger dispersion range. Such adjustment can make the liquid level in the preparation cylinder 2 relatively low when preparing a small amount of flocculant solution. The downward movement of the connecting plate 12 can drive the stirring rod 16 downward to maintain the stirring effect on the solution. At the same time, the extended dispersion rods 21 can also come into full contact with the solution, realizing the combined stirring of the solution and also dispersing the reagent, accelerating the solution, and improving the preparation efficiency.

[0053] Example Three:

[0054] As Figures 1-8 shown in Figure 28, the present invention discloses a device for preparing and adding a flocculant. Compared with Example Two, the structure of the linkage component is disclosed in this example.

[0055] The linkage component includes an inclined block 10 and a push rod 13. The inclined block 10 is connected to the lower side of the sealing cover 8, and the push rod 13 is connected to the connecting plate 12. The push rod 13 is in sliding contact and abutted against the inclined surface of the inclined block 10. As Figure 5 shown in Figures 32 and 6As shown, the top plate 29 and the upper end of the sliding plate 26 are in a state of about to touch but not yet touching. If the connecting plate 12 moves upward at this time, it will drive the push rod 13 to move upward. The push rod 13 will fit with the inclined surfaces of the inclined blocks 10 connected to each sealing cover 8, and drive the sealing covers 8 on both sides to approach each other, so as to seal one end of the pipeline 3 in the preparation cylinder 2 after preparation, avoiding the backflow of moisture and affecting the preservation of the reagent.

[0056] According to the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A flocculant preparation and dosing device, comprising a base (1), a preparation cylinder (2) mounted on the base (1), a pipeline (3) connected to the preparation cylinder (2), and a solid reagent tank (4) and a liquid reagent tank (5) respectively connected through the pipeline (3), characterized in that: The upper inner wall of the preparation cylinder (2) is slidably connected to a sealing cover (8) for covering the pipeline (3); a rotating shaft (17) is rotatably connected inside the preparation cylinder (2); a disc seat (19) is symmetrically mounted on both sides of the rotating shaft (17); and telescopic rods (20) are arrayed on the outer side of the disc seat (19), and a dispersion rod (21) is connected via the telescopic rods (20); a telescopic member (11) is installed inside the preparation cylinder (2), and a connecting plate (12) is connected to the lower output end of the telescopic member (11); The lower end of the connecting plate (12) is connected to an L-shaped rack (14), and the lower end of the L-shaped rack (14) is equipped with a motor (15), and the output end of the motor (15) is connected to a stirring rod (16). The rotating shaft (17) is provided with a gear (18) meshing with the L-shaped rack (14). A driving assembly is slidably arranged in the preparation barrel (2). The driving assembly is used to drive the stretching and telescopic rods (20) of each dispersion rod (21) to move away from each other when the connecting plate (12) moves downward. A linkage assembly is arranged in the preparation barrel (2). The linkage assembly is used to drive the sealing covers (8) on both sides to move closer to each other when the connecting plate (12) moves upward, so as to seal and plug the pipeline (3). A feeding valve (6) is installed at the lower end of the preparation barrel (2).

2. A flocculant preparation and dosing device according to claim 1, characterized in that: The inner wall of the preparation cylinder (2) is connected to a slide rod frame (7), and the slide rod frame (7) is respectively located on both sides of the pipeline (3). The two sides of the sealing cover (8) are slidably mounted on the slide rod frames (7) on both sides. A spring (9) mounted on the outside of the slide rod frame (7) is connected between the sealing cover (8) and the slide rod frame (7).

3. A flocculant preparation and dosing device according to claim 1, characterized in that: The driving assembly comprises a rotating ring (22), a sleeve ring (24), a slide plate (26), and a top plate (29). The rotating ring (22) is slidably mounted on the rotating shaft (17) on both sides of the gear one (18). A rotating rod one (23) is rotatably connected between the rotating ring (22) and the dispersion rod (21) on each side. The sleeve ring (24) is rotatably mounted on the rotating rings (22) on both sides and is close to one side. The slide plate (26) is symmetrically slidably arranged on both sides of the preparation barrel (2). A rotating rod two (28) is rotatably connected between each of the slide plates (26) and the sleeve ring (24) on each side. The top plate (29) is connected to the connecting plate (12) and cooperates with and contacts the upper end of the slide plate (26).

4. A flocculant preparation and dosing device according to claim 3, characterized in that: A guide rod (25) is connected inside the preparation cylinder (2), the slide plate (26) is slidably sleeved on the outer side of the guide rod (25) and is limited at the lower end of the guide rod (25), and a second spring (27) sleeved on the outer side of the guide rod (25) is connected between the slide plate (26) and the lower end of the guide rod (25).

5. A flocculant preparation and dosing device according to claim 1, characterized in that: The linkage assembly comprises an inclined block (10) and a push rod (13); the inclined block (10) is connected to the lower side of the sealing cover (8); the push rod (13) is connected to the connecting plate (12); and the push rod (13) is in sliding contact with the inclined surface of the inclined block (10).

6. A flocculant preparation and dosing device according to claim 1, characterized in that: The lower end of the feeding valve (6) is rotatably mounted with a material distribution disc (30), the material distribution disc (30) is radially provided with a plurality of dispensing openings (31) that are in communication with the feeding valve (6), and a gear ring (32) is mounted on the outer side of the material distribution disc (30), a servo motor 1 (33) is mounted at the bottom of the preparation cylinder (2), and the output end of the servo motor 1 (33) is connected to a gear 2 (34) that meshes with the gear ring (32).

7. A flocculant preparation and dosing device according to claim 1, characterized in that: A servo motor 2 (35) is installed in the solid reagent tank (4), and the output end of the servo motor 2 (35) is connected to a rotating rod (36), the lower end surface of the rotating rod (36) is sleeved with a spiral surface (37), the lower end of the rotating rod (36) and the spiral surface (37) both pass through the pipeline (3) and extend into the preparation cylinder (2), and the sealing cover (8) is sleeved on the outer side of the extending end of the rotating rod (36) and the spiral surface (37).

8. A flocculant preparation and dosing device according to claim 1, characterized in that: A solenoid valve (38) is installed in the pipeline (3) connected to the liquid reagent tank (5).

9. A flocculant preparation and dosing device according to claim 1, characterized in that: The upper end of the preparation cylinder (2) is provided with a water injection nozzle (39), and both the solid reagent tank (4) and the liquid reagent tank (5) are provided with an addition tube (40).

10. A flocculant preparation and dosing device according to claim 1, characterized in that: Sealing gaskets are installed on the sides of the sealing covers (8) that are close to each other.

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