Flocculating agent polymerization reaction tank

Abstract

The utility model relates to the technical field of reaction tanks, and discloses a flocculating agent polymerization reaction tank which comprises a tank body, a tank cover is arranged at the top end of the tank body through a connecting flange, a support, a connecting frame, a feeding pipe and a washing assisting pipe are arranged at the top end of the tank cover, a limiting assembly is arranged on one side of the support, and a stirring motor is arranged at the top end of the support. A transmission shaft of the stirring motor is provided with stirring rods. A cleaning solvent is added through a cleaning assisting pipe, a cleaning motor, a gear and a gear ring are matched to drive a sleeve to rotate, the sleeve drives a scraper to rotate, the scraper can scrape reaction residues attached to the inner wall of the tank body, automatic cleaning of the tank body is achieved, manual cleaning is not needed, and time and labor are saved; the impact force generated by the polyaluminum chloride solution stirred by the stirring blades on the scraper is prevented from damaging the transmission shaft of the cleaning motor through the scraper, the sleeve, the gear ring and the gear, and the service life of the cleaning motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction tanks, in particular to a flocculant polymerization reaction tank. Background Art

[0002] Flocculants are substances that reduce or eliminate the sedimentation stability and aggregation stability of dispersed particles in water, causing the dispersed particles to aggregate and flocculate into aggregates for removal. Poly aluminum chloride-based flocculants are a commonly used water purification agent, which are prepared through a polymerization reaction. When preparing poly aluminum chloride-based flocculants, a reaction tank is required to keep the poly aluminum chloride solution warm and continuously stir it. A reaction tank is a container for chemical reactions and physical reactions, which can be divided into pressurized containers and atmospheric pressure containers. The reaction tank has the characteristics of rapid heating, high temperature resistance, corrosion resistance, hygiene, no environmental pollution, no need for boiler automatic heating, convenient use, and low price.

[0003] Among them, the "reaction tank for flocculants" disclosed in the patent application No. "202120261694.X" "comprises a tank body, a feeding port is fixedly installed at the top of the tank body, a discharging port is fixedly installed at the bottom of the tank body, a stirring mechanism is arranged inside the tank body, a heat preservation shell is sleeved on the outer wall of the bottom of the tank body, a heating coil is arranged between the inner wall of the heat preservation shell and the outer wall of the tank body, a water inlet and a water outlet are fixedly connected to the outer wall of the heat preservation shell, one end of the inner side of the water inlet passes through the heat preservation shell and is communicated with the water inlet end of the heating coil, one end of the inner side of the water outlet passes through the heat preservation shell and is communicated with the water outlet end of the heating coil, a pressure relief pipe is fixedly connected to the top of the tank body, the pressure relief pipe is communicated with the tank body, and a voltage stabilizing component is fixedly installed on the inner wall of the pressure relief pipe; by setting the heat preservation shell and arranging the heating coil between the inner wall of the heat preservation shell and the outer wall of the tank body, when it is necessary to carry out a mixing reaction on the raw materials in the tank body, the heating coil can heat the tank body, and the reaction efficiency is further improved by increasing the reaction temperature".

[0004] However, the above method still has the following defects: reaction residues are easily adhered to the inner wall of the tank body, which is inconvenient for manual cleaning, and will affect the operation of the reaction tank in the long run. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the utility model provides a flocculant polymerization reaction tank, which has the advantage of automatically cleaning the inner wall of the tank body, and solves the problems raised in the above background art.

[0006] The present utility model provides the following technical solution: A flocculant polymerization reaction tank, including a tank body, the top end of the tank body is provided with a tank cover through a connecting flange, the top end of the tank cover is respectively provided with a bracket, a connecting frame, a feed pipe and a washing aid pipe, one side of the bracket is provided with a limiting component, the top end of the bracket is provided with a stirring motor, the transmission shaft of the stirring motor is provided with a stirring rod, the surface of the stirring rod is provided with stirring blades, the surface of the stirring rod is rotatably connected with a sleeve through a sealing bearing, the surface of the bottom of the sleeve is provided with a scraper, the top end of the connecting frame is provided with a cleaning motor, the transmission shaft of the cleaning motor is provided with a transmission rod, the surface of the transmission rod is provided with a gear, and one side of the gear is meshed and connected with a toothed ring.

[0007] As a preferred technical solution of the present utility model, the contact parts of the tank cover and the connecting frame with the transmission rod are both rotatably connected through bearings, the contact part of the bracket with the stirring rod is rotatably connected through a bearing, the contact part of the sleeve with the tank cover is rotatably connected through a sealing bearing, the surface of the sleeve is connected with the inner wall of the toothed ring, and the surface of the scraper is slidably connected with the inner wall of the tank body.

[0008] As a preferred technical solution of the present utility model, the limiting component includes a stop block, a first sleeve, a second sleeve, a detection component and two buffer components, the stop block is arranged at the top end of the tank cover, two chutes are opened inside the stop block, telescopic cylinders are embedded in the inner walls of the two chutes, the telescopic ends of the two telescopic cylinders are both provided with sliders, and limiting rods are arranged on one side of the two sliders.

[0009] As a preferred technical solution of the present utility model, the first sleeve is arranged on the surface of the top of the sleeve, the inner wall of the first sleeve is slidably connected with the surface of one of the limiting rods, the second sleeve is arranged on the surface of the top of the stirring rod, and one ends of the two limiting rods both penetrate through the inner wall of one side of the corresponding chute and are located outside the stop block.

[0010] As a preferred technical solution of the present utility model, the detection component includes a power collection box, a first pressure sensor plate and a second pressure sensor plate, the power collection box is arranged on the front of the stop block, a single-chip microcomputer and a wireless transmission module are respectively arranged inside the power collection box, the first pressure sensor plate is arranged at one end of one of the limiting rods, the second pressure sensor plate is arranged at one end of the other limiting rod, and the second pressure sensor plate, the first pressure sensor plate, the wireless transmission module, the stirring motor, the cleaning motor and the two telescopic cylinders are all electrically connected to the single-chip microcomputer.

[0011] As a preferred technical solution of the present utility model, both of the two buffer components each include two dovetail grooves, wherein two of the dovetail grooves are each opened on the inner wall of the first sleeve, and the other two dovetail grooves are each opened on the inner wall of the second sleeve. The inner walls of the four dovetail grooves are each slidably connected with a dovetail block, and a sliding disc is provided between each two corresponding dovetail blocks. One end of each of the two sliding discs is provided with a return spring.

[0012] As a preferred technical solution of the present utility model, one end of one of the return springs is connected to the inner wall of the first sleeve, and one end of the other return spring is connected to the inner wall of the second sleeve. The surface of one of the sliding discs is slidably connected with the inner wall of the first sleeve, and the other end of one of the sliding discs is slidably connected with one side of the first pressure sensor plate. The surface of the other sliding disc is slidably connected with the inner wall of the second sleeve.

[0013] As a preferred technical solution of the present utility model, a discharge pipe is provided at the bottom end of the tank body, a heat preservation shell is provided on the surface of the tank body, support legs are provided at the bottom end of the heat preservation shell, electric heating rods are provided on the inner wall of the heat preservation shell, a drain pipe, a water inlet pipe and a water outlet pipe are respectively provided on the surface of the heat preservation shell, electric valves are provided on the surfaces of the drain pipe, the water inlet pipe, the water outlet pipe, the discharge pipe, the auxiliary washing pipe and the feed pipe, and a pressure relief valve, a handle and a lifting lug are respectively provided on the surface of the tank cover.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. For this flocculant polymerization reaction tank, through the cooperation of the cleaning motor, the gear and the gear ring, the sleeve is driven to rotate, the sleeve drives the scraper to rotate, and the scraper will scrape the reaction residues attached to the inner wall of the tank body, realizing the automatic cleaning of the tank body without manual cleaning, which is time-saving and labor-saving;

[0016] 2. For this flocculant polymerization reaction tank, through the limiting component, the sleeve is fixed during stirring, avoiding the impact force generated by the polyaluminum chloride solution stirred by the stirring blades on the scraper from causing damage to the transmission shaft of the cleaning motor through the scraper, the sleeve, the gear ring and the gear, which is beneficial to extending the service life of the cleaning motor;

[0017] 3. For this flocculant polymerization reaction tank, through the limiting component, the stirring rod is fixed during cleaning, thereby avoiding the impact force generated by the polyaluminum chloride solution stirred by the scraper on the stirring blades from causing damage to the transmission shaft of the stirring motor through the stirring rod, which is beneficial to extending the service life of the stirring motor;

[0018] 4. The flocculant polymerization reaction tank is equipped with a detection component to assist workers in monitoring the movement of the limit rod. Without the need for manual climbing of the tank lid and visual inspection, workers can understand the movement of the limit rod, thereby estimating whether the telescopic cylinder is operating normally and reducing the maintenance difficulty of the telescopic cylinder, making it convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 is a schematic cross-sectional structural diagram of the present invention;

[0021] Figure 3 for the present invention Figure 2 is an enlarged schematic structural diagram of part A in the present invention;

[0022] Figure 4 for the present invention Figure 3 is an enlarged schematic structural diagram of part B in the present invention;

[0023] Figure 5 is a schematic structural diagram of the tank lid of the present invention;

[0024] Figure 6 is a schematic cross-sectional structural diagram of the bracket of the present invention;

[0025] Figure 7 is a schematic structural diagram of the heat preservation shell of the present invention.

[0026] In the figure: 1, tank body; 2, tank lid; 3, bracket; 4, connecting frame; 5, limit component; 51, stop block; 52, chute; 53, first sleeve; 54, second sleeve; 55, telescopic cylinder; 56, slider; 57, limit rod; 58, detection component; 581, collector box; 582, first pressure sensor plate; 583, second pressure sensor plate; 6, buffer component; 61, dovetail groove; 62, dovetail block; 63, sliding disc; 64, return spring; 7, stirring motor; 8, stirring rod; 9, pressure relief valve; 10, stirring blade; 11, sleeve; 12, scraper; 13, cleaning motor; 14, transmission rod; 15, gear; 16, gear ring; 17, feed pipe; 18, auxiliary washing pipe; 19, discharge pipe; 20, heat preservation shell; 21, handle; 22, lifting lug; 23, water outlet pipe; 24, water inlet pipe; 25, drain pipe. DETAILED DESCRIPTION OF THE INVENTION

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-7 , a flocculant polymerization reaction tank, including a tank body 1. The top of the tank body 1 is fixedly provided with a tank cover 2 through a connecting flange. The tank cover 2 is removed by disassembling the connecting flange. The top of the tank cover 2 is respectively provided with a bracket 3, a connecting frame 4, a feed pipe 17 and a washing aid pipe 18. A polyaluminum chloride solution and various additives are added through the feed pipe 17, and a cleaning solvent is added through the washing aid pipe 18. A limiting component 5 is arranged on one side of the bracket 3 to limit the stirring rod 8 or the sleeve 11 through the limiting component 5 to prevent the two from rotating simultaneously, thereby preventing the two from interfering with each other. The top of the bracket 3 is fixedly provided with a stirring motor 7. The transmission shaft of the stirring motor 7 is fixedly provided with a stirring rod 8. The surface of the stirring rod 8 is fixedly provided with stirring blades 10. There are twelve stirring blades 10. The surface of the stirring rod 8 is rotatably connected with a sleeve 11 through a sealed bearing. The surface of the bottom of the sleeve 11 is fixedly provided with a scraping plate 12. The top of the connecting frame 4 is fixedly provided with a cleaning motor 13. The transmission shaft of the cleaning motor 13 is fixedly provided with a transmission rod 14. The surface of the transmission rod 14 is fixedly provided with a gear 15. One side of the gear 15 is meshed and connected with a toothed ring 16.

[0029] The contact parts of the tank cover 2 and the connecting frame 4 with the transmission rod 14 are rotatably connected through bearings. The contact part of the bracket 3 with the stirring rod 8 is rotatably connected through a bearing. The contact part of the sleeve 11 with the tank cover 2 is rotatably connected through a sealed bearing. The surface of the sleeve 11 is fixedly connected with the inner wall of the toothed ring 16. The surface of the scraping plate 12 is slidably connected with the inner wall of the tank body 1. The toothed ring 16 drives the sleeve 11 to rotate, the sleeve 11 drives the scraping plate 12 to rotate, and the scraping plate 12 scrapes the reaction residues attached to the inner wall of the tank body 1 to realize the automatic cleaning of the tank body 1.

[0030] The limit component 5 includes a stop block 51, a first sleeve 53, a second sleeve 54, a detection component 58 and two buffer components 6. The stop block 51 is fixedly arranged at the top end of the tank cover 2. Two sliding grooves 52 are formed inside the stop block 51. Telescopic cylinders 55 are embedded in the inner walls of the two sliding grooves 52. The telescopic ends of the two telescopic cylinders 55 are fixedly provided with sliders 56. Limit rods 57 are fixedly arranged on one side of the two sliders 56. The two telescopic cylinders 55 are respectively controlled by a single-chip microcomputer. When the telescopic end of one telescopic cylinder 55 is in the extended state, the telescopic end of the other telescopic cylinder 55 is in the contracted state. When the telescopic end of one telescopic cylinder 55 is in the contracted state, the telescopic end of the other telescopic cylinder 55 is in the extended state, so as to limit the stirring rod 8 or the sleeve 11 respectively.

[0031] The first sleeve 53 is fixedly arranged on the surface of the top of the sleeve 11. The inner wall of the first sleeve 53 is slidably connected to the surface of one of the limit rods 57. The second sleeve 54 is fixedly arranged on the surface of the top of the stirring rod 8. One end of each of the two limit rods 57 penetrates through the inner wall of one side of the corresponding sliding groove 52 and is located outside the stop block 51. When one of the telescopic cylinders 55 is started, the telescopic end of the telescopic cylinder 55 will extend and push the slider 56 and the limit rod 57 to move, causing the limit rod 57 to slide into the inner wall of the first sleeve 53, completing the fixation of the sleeve 11. Before stirring, the sleeve 11 is fixed by the limit component 5, thereby avoiding the impact force generated by the polyaluminum chloride solution stirred by the stirring blade 10 on the scraping plate 12 from damaging the transmission shaft of the cleaning motor 13 through the scraping plate 12, the sleeve 11, the gear ring 16 and the gear 15, and extending the service life of the cleaning motor 13. Similarly, before stirring, the stirring rod 8 is fixed by the limit component 5, thereby avoiding the impact force generated by the polyaluminum chloride solution stirred by the scraping plate 12 on the stirring blade 10 from damaging the transmission shaft of the stirring motor 7 through the stirring rod 8, and extending the service life of the stirring motor 7. It should be emphasized that the stirring motor 7 and the cleaning motor 13 are controlled by the single-chip microcomputer to be turned off so that the stationary first sleeve 53 and the second sleeve 54 are aligned with the corresponding limit rods 57.

[0032] The detection component 58 includes a current collector box 581, a first pressure sensor board 582, and a second pressure sensor board 583. The current collector box 581 is fixedly arranged on the front surface of the stop block 51. A single-chip microcomputer and a wireless transmission module are fixedly arranged inside the current collector box 581. The first pressure sensor board 582 is fixedly arranged at one end of one of the limit rods 57, and the second pressure sensor board 583 is fixedly arranged at one end of the other limit rod 57. The second pressure sensor board 583, the first pressure sensor board 582, the wireless transmission module, the stirring motor 7, the cleaning motor 13, and the two telescopic cylinders 55 are all electrically connected to the single-chip microcomputer. Through the cooperation of an external remote terminal, the single-chip microcomputer, and the wireless transmission module, the above-mentioned electrical appliances are remotely controlled. The moving limit rod 57 will push the first pressure sensor board 582 or the second pressure sensor board 583 to move until the first pressure sensor board 582 or the second pressure sensor board 583 contacts and presses the return spring 64 against the sliding disk 63. At this time, the pressure value measured by the first pressure sensor board 582 or the second pressure sensor board 583 will increase. There is a program inside the single-chip microcomputer. After the single-chip microcomputer receives a pressure value greater than the preset value of the program, the single-chip microcomputer will judge that the limit rod 57 has slid into the inside of the first sleeve 53 or the second sleeve 54, and then send a prompt to the external remote terminal through the wireless transmission module for subsequent stirring or cleaning. Otherwise, a warning will be issued to remind the worker to climb onto the tank cover 2 and check the telescopic cylinder 55. Therefore, by setting the detection component 58, it is possible to master the movement of the limit rod 57 without manually climbing onto the tank cover 2 and observing the limit rod 57 with the naked eye, and then estimate whether the telescopic cylinder 55 is working properly, reducing the maintenance difficulty of the telescopic cylinder 55 and facilitating use.

[0033] The two buffer components 6 both include two dovetail grooves 61. Among them, two dovetail grooves 61 are both opened on the inner wall of the first sleeve 53, and the other two dovetail grooves 61 are both opened on the inner wall of the second sleeve 54. The inner walls of the four dovetail grooves 61 are all slidably connected with dovetail blocks 62. A sliding disk 63 is fixedly arranged between every two corresponding dovetail blocks 62. One end of each of the two sliding disks 63 is fixedly provided with a return spring 64. When the sliding disk 63 is squeezed by the first pressure sensor board 582 or the second pressure sensor board 583, the return spring 64 will be compressed. The collision between the sliding disk 63 and the first pressure sensor board 582 is buffered by the return spring 64, and the collision between the sliding disk 63 and the second pressure sensor board 583 is buffered by the return spring 64, thereby protecting the first pressure sensor board 582 or the second pressure sensor board 583. The dovetail groove 61 guides the movement of the sliding disk 63 through the dovetail block 62 to prevent the sliding disk 63 from rotating, thereby preventing the return spring 64 from being twisted.

[0034] One end of one of the return springs 64 is fixedly connected to the inner wall of the first sleeve 53, and one end of the other return spring 64 is fixedly connected to the inner wall of the second sleeve 54. The surface of one of the sliding disks 63 is slidably connected to the inner wall of the first sleeve 53, and the other end of one of the sliding disks 63 is slidably connected to one side of the first pressure sensor plate 582. The surface of the other sliding disk 63 is slidably connected to the inner wall of the second sleeve 54. Both the second sleeve 54 and the first sleeve 53 can guide the movement of the sliding disk 63.

[0035] A discharge pipe 19 is fixedly provided at the bottom end of the tank body 1, and the polyaluminum chloride-based flocculant is discharged through the discharge pipe 19. A heat preservation shell 20 is fixedly provided on the surface of the tank body 1. Support legs are fixedly provided at the bottom end of the heat preservation shell 20, and there are four support legs. Electric heating rods are provided on the inner wall of the heat preservation shell 20, and there are twenty electric heating rods. A drain pipe 25, a water inlet pipe 24, and a water outlet pipe 23 are respectively fixedly provided on the surface of the heat preservation shell 20. Electric valves are fixedly provided on the surfaces of the drain pipe 25, the water inlet pipe 24, the water outlet pipe 23, the discharge pipe 19, the auxiliary washing pipe 18, and the feed pipe 17. Water is input into the interior of the heat preservation shell 20 through the water inlet pipe 24, and the electric heating rods are started to heat the water, thereby performing water bath heating on the tank body 1. A pressure relief valve 9, a handle 21, and lifting lugs 22 are respectively fixedly provided on the surface of the tank cover 2. There are two handles 21, which are convenient for manually lifting the tank cover 2, and there are three lifting lugs 22, which are convenient for lifting the tank cover 2.

[0036] During use, first, two telescopic cylinders 55 are started. The telescopic end of one of the telescopic cylinders 55 will shorten and drive one of the limit rods 57 and the first pressure sensor plate 582 to move, prompting the limit rod 57 to limit the first sleeve 53 and the sleeve 11. The telescopic end of the other telescopic cylinder 55 extends and pushes the other limit rod 57 and the second pressure sensor plate 583 to move, prompting the limit rod 57 to slide into the interior of the second sleeve 54, completing the limitation of the second sleeve 54 and the stirring rod 8, thereby avoiding the impact force generated by the polyaluminum chloride solution stirred by the scraper 12 on the stirring blade 10 from damaging the transmission shaft of the stirring motor 7 through the stirring rod 8, which is beneficial to extending the service life of the stirring motor 7. Then, a cleaning solvent is added through the auxiliary washing pipe 18, and at the same time, the cleaning motor 13 is started. The cleaning motor 13 drives the sleeve 11 to rotate through the gear 15 and the gear ring 16, and the sleeve 11 drives the scraper 12 to rotate. The scraper 12 scrapes the reaction residues attached to the inner wall of the tank body 1, realizing the automatic cleaning of the tank body 1 without manual cleaning, saving time and effort.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flocculant polymerization reaction tank, comprising a tank body (1), characterized in that: The top of the tank body (1) is provided with a tank cover (2) via a connecting flange, and the top of the tank cover (2) is respectively provided with a bracket (3), a connecting frame (4), a feed pipe (17) and a washing-assisting pipe (18), and a stopper assembly (5) is provided on one side of the bracket (3). The top of the bracket (3) is provided with a stirring motor (7), and the transmission shaft of the stirring motor (7) is provided with a stirring rod (8), and the surface of the stirring rod (8) is provided with a stirring blade (10). The surface of the stirring rod (8) is rotatably connected to a sleeve (11) via a sealed bearing, and the surface of the bottom of the sleeve (11) is provided with a scraper (12). The top of the connecting frame (4) is provided with a cleaning motor (13), and the transmission shaft of the cleaning motor (13) is provided with a transmission rod (14), and the surface of the transmission rod (14) is provided with a gear (15), and one side of the gear (15) is meshingly connected to a gear ring (16).

2. The flocculant polymerization reaction tank according to claim 1, characterized in that: The contact parts of the tank cover (2) and the connecting frame (4) with the transmission rod (14) are rotatably connected via bearings, the contact parts of the bracket (3) with the stirring rod (8) are rotatably connected via bearings, the contact parts of the sleeve (11) with the tank cover (2) are rotatably connected via a sealed bearing, the surface of the sleeve (11) is connected to the inner wall of the gear ring (16), and the surface of the scraper (12) is slidably connected to the inner wall of the tank body (1).

3. The flocculant polymerization reaction tank according to claim 1, characterized in that: The limit assembly (5) comprises a stopper (51), a first sleeve (53), a second sleeve (54), a detection assembly (58) and two buffer assemblies (6); the stopper (51) is arranged at the top end of the tank cover (2); two slide grooves (52) are provided inside the stopper (51); inner walls of the two slide grooves (52) are embedded with telescopic cylinders (55); telescopic ends of the two telescopic cylinders (55) are provided with sliders (56); and one side of the two sliders (56) is provided with a limit rod (57).

4. The flocculant polymerization reaction tank according to claim 3, characterized in that: The first sleeve (53) is arranged on the surface of the top of the sleeve (11), the inner wall of the first sleeve (53) is slidably connected to the surface of one of the limiting rods (57), the second sleeve (54) is arranged on the surface of the top of the stirring rod (8), and one end of each of the two limiting rods (57) passes through the inner wall of one side of the corresponding slide groove (52) and is placed outside the stopper (51).

5. The flocculant polymerization reaction tank according to claim 3, characterized in that: The detection assembly (58) comprises a current collecting box (581), a first pressure sensor plate (582) and a second pressure sensor plate (583); the current collecting box (581) is arranged on the front side of the stopper (51); a single-chip microcomputer and a wireless transmission module are respectively arranged inside the current collecting box (581); the first pressure sensor plate (582) is arranged at one end of one of the limit rods (57); the second pressure sensor plate (583) is arranged at one end of the other limit rod (57); the second pressure sensor plate (583), the first pressure sensor plate (582), the wireless transmission module, the stirring motor (7), the cleaning motor (13) and the two telescopic cylinders (55) are all electrically connected to the single-chip microcomputer.

6. The flocculant polymerization reaction tank according to claim 3, characterized in that: The two buffer assemblies (6) each include two dovetail grooves (61), wherein two of the dovetail grooves (61) are each opened on the inner wall of the first sleeve (53), and the other two dovetail grooves (61) are each opened on the inner wall of the second sleeve (54), the inner walls of the four dovetail grooves (61) are each slidably connected to a dovetail block (62), a sliding plate (63) is provided between each two corresponding dovetail blocks (62), and a return spring (64) is provided at one end of each of the two sliding plates (63).

7. The flocculant polymerization reaction tank according to claim 6, characterized in that: One end of one of the return springs (64) is connected to the inner wall of the first sleeve (53), one end of the other return spring (64) is connected to the inner wall of the second sleeve (54), the surface of one of the sliding plates (63) is slidably connected to the inner wall of the first sleeve (53), the other end of one of the sliding plates (63) is slidably connected to one side of the first pressure sensor plate (582), and the surface of the other sliding plate (63) is slidably connected to the inner wall of the second sleeve (54).

8. The flocculant polymerization reaction tank according to claim 1, characterized in that: A discharge pipe (19) is provided at the bottom end of the tank body (1), a heat-insulating shell (20) is provided on the surface of the tank body (1), a supporting leg is provided at the bottom end of the heat-insulating shell (20), an electric heating rod is provided on the inner wall of the heat-insulating shell (20), a drainage pipe (25), a water inlet pipe (24) and a water outlet pipe (23) are provided on the surface of the heat-insulating shell (20), an electric valve is provided on the surface of the drainage pipe (25), the surface of the water inlet pipe (24), the surface of the water outlet pipe (23), the surface of the discharge pipe (19), the surface of the auxiliary washing pipe (18) and the surface of the feed pipe (17), and a pressure relief valve (9), a handle (21) and a lifting lug (22) are provided on the surface of the tank cover (2).

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