Dispersing device for high-concentration water-soluble polymer

Abstract

The utility model relates to a dispersing device for a high-concentration water-soluble polymer, which is provided with a motor, a rotor arranged in a stirring and shearing shell and a stator fixed below a secondary water adding shell are oppositely arranged, and the rotor driven by the motor, a coupler and a stirring shaft can rotate in the stator to form a multi-stage shearing area; a slurry inlet communicated with the negative pressure slurry inlet area and a secondary water inlet communicated with secondary water distribution holes in the stator are formed in the secondary water adding shell; slurry enters a primary shearing area and a secondary shearing area in the rotor from a tooth end shearing inlet; secondary water enters the secondary shearing area and the primary shearing area from secondary water distribution holes; and the dispersed polymer aqueous solution flows out from inner ring tooth gaps and outer ring tooth gaps of the stator and is output through a produced liquid outlet. The device is small in occupied area and can meet the use requirements of special scenes such as offshore platforms and mountainous regions. The device is suitable for dispersion treatment of various water-soluble polymers used in various fields, and has relatively high universality and flexibility.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to a dispersion device for high-concentration water-soluble polymers. Background Technology

[0002] Water-soluble polymers have a wide range of applications. For example, in the oil extraction industry, they are used as oil displacement agents to enhance oil recovery; in the water treatment industry, they can be used as flocculants and dehydrating agents to purify water; in the paper industry, they can be used as papermaking additives to improve paper strength and quality; in the cosmetics industry, they serve as thickeners and moisturizers, giving products a good texture and performance; and in the pharmaceutical field, they can be used as drug carriers, dispersants and stabilizers in suspensions, and soil conditioners. With the continuous development of these industries, the demand for water-soluble polymers, especially high-concentration water-soluble polymers, is increasing daily.

[0003] However, polymers often face the following problems during dissolution and dispersion:

[0004] (1) The higher the molecular weight of the polymer, the higher the viscosity of the solution, and the higher the requirements for the dispersion equipment, usually requiring a large dissolving tank;

[0005] (2) Poor solubility: Although the polymer is hydrophilic, its solubility varies with composition and molecular weight, making it difficult to dissolve under precise physical and chemical conditions;

[0006] (3) The problem of uneven dispersion: some solutions are not mixed evenly, resulting in the formation of coarse particles, which affects the effect of use. In oilfield development, uneven oil displacement agent solutions injected into the oil layer will cause blockage of the oil layer, resulting in poor development effect and thus affecting the project benefits.

[0007] These issues place high demands on dispersion equipment. Excessive stirring speed may cause molecular chain breakage, reducing the polymer's molecular weight; conversely, insufficient stirring speed cannot guarantee uniform particle dispersion and rapid dissolution. Traditional dispersion methods use simple stirring, ultrasonic, and grinding devices. However, due to structural and functional deficiencies in these devices—such as poorly designed dispersion chambers, dead zones, and low energy transfer efficiency—they often fail to achieve ideal dispersion results when processing high-concentration water-soluble polymers. For example, while ultrasonic dispersion can improve dispersion to some extent, its uniformity and stability in high-concentration systems still need improvement. Grinding reduces polymer particle size, but it is costly and prone to producing dusty final products and "fish-eye" defects.

[0008] Polymer dry powder dispersion devices commonly used in oilfields mainly consist of a polymer dry powder addition section, a water addition section, a mixing and stirring section, a mixed solution conveying section, and an automatic control section. Based on the contact method between water and powder, polymer dispersion devices can be classified into the following four types:

[0009] 1. Nozzle type: The contact between water and polymer powder is concentrated in one nozzle. Water enters the water-powder mixer tangentially from the inlet and forms a closed, rotating circular water curtain at the bottom of the mixer. The polymer powder enters from the inlet and diffuses rapidly. The powder dissolves quickly upon contact with water, forming a mixed solution.

[0010] 2. Water Mantle Type: Before the polymer powder comes into contact with water, the water flow forms a water mantle. The water flows from the periphery to the center, and the polymer powder is scattered in the vortex of the water mantle. Then, it is directly transported to the polymer curing tank by a delivery pump.

[0011] 3. Jet type: Pressurized water is used to directly draw polymer dry powder into the water jet injector from the powder inlet of the water jet injector. Then, the water and polymer dry powder are mixed through the throat and diffuser of the water jet injector, and the mixture enters the mixing tank.

[0012] 4. Waterfall type: Before the polymer powder comes into contact with water, the water is sprayed out from all sides of the dispersion tank, forming a waterfall-like flow. The polymer powder is scattered in the vortex formed by the waterfall and then directly transported to the polymer curing tank by the delivery pump.

[0013] In addition, there are the following related patent technologies: Patent No. CN201680017478.2 discloses an apparatus for dispersing water-soluble polymers, comprising: a wetting cone connected at its top to a column, the column being typically metered by a metering screw for standard particle size polymers, the bottom of the cone being connected to a primary water inlet line for supplying the flow, and at the bottom end of the cone, an assembly comprising: a cavity for grinding and discharging the dispersed polymer, the cavity comprising: a motor-driven rotor and stator with blades, and on all or part of the outer periphery of the cavity, a ring supplied by a secondary water line, the ring communicating with the cavity through a slot to spray pressurized water onto the stator, the slot of the stator and / or the blades of the rotor being inclined at an angle between 20° and 80° relative to the horizontal plane of the stator.

[0014] However, the drawbacks of the above-mentioned utility model are: the dispersion efficiency of secondary water is low, the mixing is uneven, and it cannot be precisely controlled.

[0015] Patent CN202322802442.5 discloses a dispersion device for water-soluble polymers, relating to the field of dispersion equipment technology. The device includes: a support plate with a limiting frame fixed to the top of the support plate near one side edge; and a crushing assembly, which includes a grinding chamber. In this invention, when dispersing a water-soluble polymer, the polymer is first poured into the grinding chamber. Then, a drive motor is started, driving the crushing roller to crush the polymer. The crushed polymer enters a mixing tank through a conveying pipe. A certain amount of aqueous solution is then poured into the mixing tank. A servo motor is then started, driving the stirring blades to mix and disperse the polymer. Through the action of the crushing assembly, a larger quantity of water-soluble polymer can be rapidly dispersed in a shorter time.

[0016] However, the drawback of the above-mentioned utility model is that it is too large and not conducive to continuous operation.

[0017] Patent CN201220670995.9 discloses a rapid dissolution system for water-soluble polymers, achieving rapid and uniform dissolution of water-soluble polymers. The rapid dissolution system includes a pre-dispersion system, a polymer dissolution system, and fans, pumps, and pipelines connecting the various components. The polymer dissolution system employs two or more stages of rotating packed beds connected in series. This invention can prepare uniformly dissolved polymer aqueous solutions, reducing equipment volume and quantity, lowering investment, reducing floor space, and shortening dissolution time; it also achieves continuous operation of the dissolution process, producing polymer aqueous solutions with uniform and stable concentrations.

[0018] However, the drawback of the above-mentioned utility model is that processing polymers with ultra-high viscosity systems will reduce production efficiency.

[0019] In conclusion, there is an urgent need for a new type of dispersion device specifically designed for high-concentration water-soluble polymers to overcome the shortcomings of existing technologies and meet the needs of industry development. Summary of the Invention

[0020] The purpose of this invention is to provide a dispersion device for high-concentration water-soluble polymers, overcoming the shortcomings of existing dispersion devices, such as uneven polymer particle size distribution and long preparation time for the entire aqueous solution. This improves the application effect of the polymer, shortens the preparation time of the polymer aqueous solution, and enhances the economic benefits in the application field.

[0021] The technical solution of this utility model is: a dispersion device for high-concentration water-soluble polymers, equipped with a motor, wherein: a rotor installed in a stirring shear shell is coupled to a stator fixed below a secondary water addition shell, and the rotor driven by the motor, coupling and stirring shaft can rotate within the stator to form a multi-stage shear zone; the secondary water addition shell is provided with a slurry inlet communicating with a negative pressure slurry inlet zone and a secondary water inlet communicating with a secondary water distribution hole in the stator; the slurry enters the primary shear zone and the secondary shear zone in the rotor from the tooth end shear inlet; secondary water enters the secondary shear zone and the primary shear zone from the secondary water distribution hole; the dispersed polymer aqueous solution flows out from the gap between the inner and outer ring teeth of the stator and is output through the product liquid outlet.

[0022] Preferably, the stator is a disc body and the outer periphery of the upper disc body is connected to the lower body of the secondary water filling shell by bolts. The outer edge of the stator disc body is embedded and sealed in the upper body of the stirring and shearing shell to form a liquid filling cavity that communicates with the liquid outlet. The liquid outlet in the stirring and shearing shell is arranged opposite to the secondary water inlet in the secondary water filling shell.

[0023] Preferably, the lower disk of the stator is provided with outer ring stator teeth and inner ring stator teeth, the gap between the outer ring teeth is provided between the outer ring stator teeth, and the gap between the inner ring teeth is provided between the inner ring stator teeth.

[0024] Preferably, both the outer ring stator teeth and the inner ring stator teeth in the stator are straight teeth, and the outer ring stator teeth and the inner ring stator teeth are staggered; the gap between the inner ring teeth is set between 1mm and 3mm and the number is set between 10 and 120; the gap between the outer ring teeth is set between 1mm and 3mm and the number is set between 10 and 180.

[0025] Preferably, the secondary water distribution holes in the stator are uniformly arranged in the upper disk between the outer ring stator teeth and the inner ring stator teeth and correspond to the secondary shearing zone in the rotor.

[0026] Preferably, the diameter of the secondary water distribution holes is set between 1.0 mm and 30.0 mm, and the number of secondary water distribution holes is set between 5 and 50.

[0027] Preferably, the rotor is a disc with a rotor fixing hole in the disc. Inner ring rotor teeth and outer ring rotor teeth are provided in the disc around the rotor fixing hole. The primary shearing zone is located between the inner ring rotor teeth, and the secondary shearing zone is located between the outer ring rotor teeth.

[0028] Preferably, both the inner and outer rotor teeth are irregular, blade-shaped, inwardly inclined helical teeth that can mesh with the tooth gap between the stator teeth arranged alternately in the inner and outer stator teeth.

[0029] Preferably, the rotor has a total of 4-12 inner and outer rotor teeth; the specific number of inner and outer rotor teeth is determined according to the actual shear force required by the dispersion device of the high-concentration water-soluble polymer and can change the relative position between the outer and inner rotor teeth according to the overall flow pattern of the water-soluble polymer.

[0030] Preferably, the central hole of the slurry inlet tube welded into the secondary water filling shell and the stator central hole is smaller than the central hole formed by the inner ring rotor teeth, forming a negative pressure slurry inlet zone; the tooth end shearing inlet is formed by the inner edge region of the inner ring rotor teeth.

[0031] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0032] 1. This invention improves the structure of stirring and dispersing polymers, enabling water-soluble polymers to be dispersed more quickly and evenly. According to the test, its dispersion speed is 2-3 times higher than that of the dispersion device currently used in oil fields.

[0033] 2. The device has improved the mating structure of the stator and rotor, which significantly improves the dispersion efficiency of the polymer. Through the synergistic effect of secondary water wetting and dispersion steps, the dispersed polymer particles are finer and more uniform.

[0034] 3. A two-stage water-powder mixing method is adopted. The primary water and polymer powder are first mixed into a slurry by a premixer, and then enter this device for secondary mixing with secondary water, so that the water-soluble polymer in the slurry is more evenly dispersed.

[0035] 4. The high-speed rotating rotor forms a negative pressure slurry inlet zone in this device. After the slurry enters through the tooth end shearing inlet between the rotor and the stator, the secondary water can be fully mixed with the slurry in the primary and secondary shearing zones of the rotor that enter through the secondary water inlet and the secondary water distribution holes of the stator. This ensures that the water-soluble polymer entering this invention has no shear dead zones, the composition of the mixed water-soluble polymer slurry is more uniform, and the water-soluble polymer can be dispersed more quickly and uniformly, ultimately obtaining a uniformly dispersed high-concentration polymer solution.

[0036] This device effectively improves the dispersion speed and preparation efficiency of water-soluble polymers, thereby improving the application effect of polymers, shortening the preparation time of polymer aqueous solutions, and increasing the economic benefits in the application field.

[0037] This device is particularly suitable for the dispersion and dissolution of water-soluble polymers during oilfield chemical flooding. It ensures more thorough polymer mixing, improves product quality, and achieves water-soluble polymer concentrations exceeding 10,000 mg / L. During dispersion, the improved stator and rotor structure preserves the polymer molecular structure, preventing degradation of the prepared polymer solution. The polymer solution prepared by this device has a certain head, eliminating the need for an additional delivery pump.

[0038] This device has a compact overall structure and a small footprint, making it suitable for use in special environments such as offshore platforms and mountainous terrain. It is applicable to the dispersion of various water-soluble polymers used in multiple fields, demonstrating high versatility and flexibility. Attached Figure Description

[0039] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0040] Figure 1 This is a schematic diagram of the structure of this utility model.

[0041] Figure 2 yes Figure 1 Front view of the cross-sectional view of the middle stator.

[0042] Figure 3 yes Figure 1 and Figure 2 A bottom view of the center stator.

[0043] Figure 4 yes Figure 1 Top view of the central rotor.

[0044] Figure 5 yes Figure 1 A schematic diagram showing the stator and rotor being installed opposite each other.

[0045] In the diagram: 1. Slurry inlet; 2. Secondary water inlet; 3. Stator; 3-1. Secondary water distribution hole; 3-2. Outer ring stator teeth; 3-3. Outer ring tooth gap; 3-4. Inner ring tooth gap; 3-5. Inner ring stator teeth; 4. Rotor; 4-1. Outer ring rotor teeth; 4-2. Inner ring rotor teeth; 4-3. Rotor fixing hole; 4-4. Primary shearing zone; 4-5. Secondary shearing zone; 5. Tooth end shearing inlet; 6. Product outlet; 7. Stirring shaft; 8. Coupling; 9. Base; 10. Motor; 11. Stirring and shearing shell; 12. Negative pressure slurry inlet zone; 13. Secondary water inlet shell. Detailed Implementation

[0046] The accompanying drawings are for reference and illustration only and are not intended to limit the scope of protection of this utility model. The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0048] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] See Figures 1-5 A dispersion device for a high-concentration water-soluble polymer is provided, comprising a motor 10, wherein: a rotor 4 installed in a stirring shear shell 11 is coupled to a stator 3 fixed below a secondary water addition shell 13, and the rotor 4 driven by the motor 10, coupling 8 and stirring shaft 7 can rotate within the stator 3 to form a multi-stage shear zone; the secondary water addition shell 13 is provided with a slurry inlet 1 communicating with a negative pressure slurry inlet 12 and a secondary water inlet 2 communicating with a secondary water distribution hole 3-1 in the stator 3; the slurry enters the primary shear zone 4-4 and the secondary shear zone 4-5 in the rotor 4 from the tooth end shear inlet 5; secondary water enters the secondary shear zone 4-5 and the primary shear zone 4-4 from the secondary water distribution hole 3-1; the dispersed polymer aqueous solution flows out from the inner ring tooth gap 3-4 and the outer ring tooth gap 3-3 of the stator 3 and is output through the product liquid outlet 6.

[0050] This invention focuses on improving the shearing structure of existing dispersion equipment for high-concentration water-soluble polymers. In this device, the stator 3 and rotor 4 are fitted together. The stirring shearing shell 11 is fixedly connected to the shaft seal shell containing the stirring shaft 7 and coupling 8. The motor 10 and the shaft seal shell are fixed on the base 9, and the lower end of the base 9 is equipped with pads. The motor 10, as the power unit, can be a three-phase asynchronous motor or a DC brushless motor. The transmission mechanism between the motor 10 and the stirring shaft 7 is a belt drive or a sprocket drive, preferably a belt drive.

[0051] The water-soluble polymer enters the device through the slurry inlet 1, enters the primary shear zone 4-4 and secondary shear zone 4-5 of the rotor 4 through the tooth end shearing inlet 5 between the stator 3 and the rotor 4, and flows out through the inner ring tooth gap 3-4 and the outer ring tooth gap 3-3 of the stator 3, and is output through the product liquid outlet 6.

[0052] The negative pressure inlet zone 12 formed by the high-speed rotating rotor 4 facilitates the entry of slurry from the tooth-end shear inlet 5 between the rotor 4 and the stator 3. Secondary water entering the secondary shear zone 4-5 and primary shear zone 4-4 of the rotor 4 through the secondary water inlet 2 and the secondary water distribution holes 3-1 of the stator 3 can fully mix with the slurry, ensuring that the water-soluble polymer entering this invention has no shear dead zones. The resulting slurry composition of the mixed water-soluble polymer is more uniform, allowing for faster and more uniform dispersion of the water-soluble polymer, ultimately yielding a uniformly dispersed, high-concentration polymer solution. This device effectively improves the dispersion speed and preparation efficiency of water-soluble polymers, thereby enhancing the application effect of the polymer, shortening the preparation time of polymer aqueous solutions, and improving the economic benefits in the application field.

[0053] Based on the above embodiment 1, the present invention also has the following embodiments: A preferred embodiment: The stator 3 is a disc body and the outer periphery of the upper disc body is connected to the lower body of the secondary water filling shell 13 by bolts. The outer edge of the disc body of the stator 3 is embedded and sealed in the upper body of the stirring and shearing shell 11 and forms a liquid filling cavity communicating with the liquid outlet. The liquid outlet 6 in the stirring and shearing shell 11 is arranged opposite to the secondary water inlet 2 in the secondary water filling shell 13.

[0054] In a preferred embodiment: the lower disk of the stator 3 is provided with outer ring stator teeth 3-2 and inner ring stator teeth 3-5. The outer ring tooth gap 3-3 is located between the outer ring stator teeth 3-2, and the inner ring tooth gap 3-4 is located between the inner ring stator teeth 3-5. The lower disk of the stator 3 is provided with two rings of teeth, namely the outer ring stator teeth 3-2 and the inner ring stator teeth 3-5, forming two tooth gaps, namely the outer ring tooth gap 3-3 and the inner ring tooth gap 3-4. The water-soluble polymer after being sheared and ground by the rotor 4 flows out through the inner ring tooth gap 3-4 and the outer ring tooth gap 3-3 and is output through the product liquid outlet 6.

[0055] In a preferred embodiment: the outer ring stator teeth 3-2 and the inner ring stator teeth 3-5 in the stator 3 are both straight teeth, and the outer ring stator teeth 3-2 and the inner ring stator teeth 3-5 are staggered; the gap of the inner ring tooth gap 3-4 is set between 1mm and 3mm and the number is set between 10 and 120; the gap of the outer ring tooth gap 3-3 is set between 1mm and 3mm and the number is set between 10 and 180. The stator teeth in the stator 3 are arranged in two rings, and the two rings of stator teeth are staggered. The beneficial effect that can be achieved is that as the rotor 4 drives the flow of water-soluble polymer, the polymer entering the inner ring stator teeth 3-5 in the stator 3 is pressed downward, increasing the shearing time; while the fluid of water-soluble polymer entering the outer ring stator teeth 3-2 rises, enhancing the contact effect between the polymer fluid and the injected secondary water.

[0056] A preferred embodiment: see Figure 5 The secondary water distribution holes 3-1 in the stator 3 are evenly arranged in the upper disk between the outer ring stator teeth 3-2 and the inner ring stator teeth 3-5, and correspond to the secondary shearing zone 4-5 in the rotor 4.

[0057] In a preferred embodiment, the diameter of the secondary water distribution holes 3-1 is set between 1.0 mm and 30.0 mm, and the number of secondary water distribution holes 3-1 is set between 5 and 50.

[0058] A preferred embodiment: see Figure 4 The rotor 4 is a disc body with a rotor fixing hole 4-3 in the disc body. Inner ring rotor teeth 4-2 and outer ring rotor teeth 4-1 are provided in the disc body around the rotor fixing hole 4-3. The primary shearing zone 4-4 is located between the inner ring rotor teeth 4-2, and the secondary shearing zone 4-5 is located between the outer ring rotor teeth 4-1.

[0059] In a preferred embodiment, both the inner rotor teeth 4-2 and the outer rotor teeth 4-1 are irregular, blade-shaped helical teeth with inwardly inclined tooth tips, capable of engaging with the tooth ring gaps between the stator teeth 3-5 and 3-2, which are staggered in the stator 3. The inward inclination of the tooth tips of the inner rotor teeth 4-2 and 4-1 means that the inner tooth tips are lower than the outer tooth tips, facilitating the entry of slurry from the negative pressure slurry inlet zone 12 into the rotor 4 and stator 3 via the tooth end shearing inlet 5. When the rotor 4 rotates within the stator 3, it drives the flow of slurry within the tooth ring gaps, thereby driving the flow of slurry in the primary shearing zone 4-4 and the secondary shearing zone 4-5, shearing and dispersing it.

[0060] In a preferred embodiment, the rotor 4 has a total of 4-12 inner ring rotor teeth 4-2 and outer ring rotor teeth 4-1; the specific number of inner ring rotor teeth 4-2 and outer ring rotor teeth 4-1 is determined according to the actual shear force required by the dispersion device for high-concentration water-soluble polymers, and the relative position between the outer ring rotor teeth 4-1 and the inner ring rotor teeth 4-2 can be changed according to the overall flow pattern of the water-soluble polymers.

[0061] In a preferred embodiment: the central hole of the slurry inlet 1 welded into the secondary water filling shell 13 and the central hole of the stator 3 is smaller than the central hole formed by the inner ring rotor teeth 4-2, forming a negative pressure slurry inlet zone 12; the tooth end shearing inlet 5 is formed by the inner edge region of the inner ring rotor teeth 4-2.

[0062] The embodiments described above are merely typical examples, but the present invention is not limited to these embodiments. Those skilled in the art can make modifications without departing from the spirit and teachings of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the inventive spirit and concept of the present invention should be included within the protection scope of the present invention. Therefore, the protection scope is not limited to the above description.

Claims

1. A dispersion device for a high-concentration water-soluble polymer, equipped with a motor, characterized in that, The rotor installed in the stirring shear shell is mated with the stator fixed below the secondary water filling shell. Driven by the motor, coupling and stirring shaft, the rotor can rotate inside the stator and form a multi-stage shear zone. The secondary water filling shell is provided with a slurry inlet that communicates with the negative pressure slurry inlet zone and a secondary water inlet that communicates with the secondary water distribution hole in the stator. The slurry enters the primary shear zone and the secondary shear zone in the rotor from the tooth end shear inlet. The secondary water enters the secondary shear zone and the primary shear zone from the secondary water distribution hole. The dispersed polymer aqueous solution flows out from the gap between the inner and outer ring teeth of the stator and is output through the product liquid outlet.

2. The dispersion device for a high-concentration water-soluble polymer as described in claim 1, characterized in that, The stator is a disc body, and the outer periphery of the upper disc body is connected to the lower body of the secondary water filling shell by bolts. The outer edge of the stator disc body is embedded and sealed in the upper body of the stirring and shearing shell to form a liquid filling cavity that communicates with the liquid outlet. The liquid outlet in the stirring and shearing shell is arranged opposite to the secondary water inlet in the secondary water filling shell.

3. The dispersion device for a high-concentration water-soluble polymer as described in claim 2, characterized in that, The lower disc of the stator is provided with outer ring stator teeth and inner ring stator teeth. The gap between the outer ring teeth is set between the outer ring stator teeth, and the gap between the inner ring teeth is set between the inner ring stator teeth.

4. The dispersion device for a high-concentration water-soluble polymer as described in claim 3, characterized in that, Both the outer and inner ring stator teeth in the stator are straight teeth, and the outer and inner ring stator teeth are staggered; the gap between the inner ring teeth is set between 1mm and 3mm and the number is set between 10 and 120; the gap between the outer ring teeth is set between 1mm and 3mm and the number is set between 10 and 180.

5. The dispersion device for a high-concentration water-soluble polymer as described in claim 4, characterized in that, The secondary water distribution holes in the stator are evenly arranged in the upper disk between the outer ring stator teeth and the inner ring stator teeth, and correspond to the secondary shearing zone in the rotor.

6. A dispersion device for a high-concentration water-soluble polymer as described in claim 1 or 5, characterized in that, The diameter of the secondary water distribution holes is set between 1.0 mm and 30.0 mm, and the number of secondary water distribution holes is set between 5 and 50.

7. The dispersion device for a high-concentration water-soluble polymer as described in claim 5, characterized in that, The rotor is a disc with a rotor fixing hole in it. Inner and outer rotor teeth are provided in the disc around the rotor fixing hole. The primary shearing zone is located between the inner rotor teeth, and the secondary shearing zone is located between the outer rotor teeth.

8. The dispersion device for a high-concentration water-soluble polymer as described in claim 7, characterized in that, Both the inner and outer rotor teeth are irregular, blade-shaped, inwardly inclined helical teeth that can mesh with the tooth ring gaps between the stator teeth arranged alternately in the inner and outer stator teeth.

9. The dispersion device for a high-concentration water-soluble polymer as described in claim 8, characterized in that, The rotor has a total of 4-12 inner and outer rotor teeth; the specific number of inner and outer rotor teeth is determined according to the actual shear force required by the dispersion device of high-concentration water-soluble polymer and can change the relative position between the outer and inner rotor teeth according to the overall flow pattern of the water-soluble polymer.

10. The dispersion device for a high-concentration water-soluble polymer as described in claim 9, characterized in that, The slurry inlet tube, which is welded into the secondary water-filling shell and the stator center hole, has a smaller center hole than the center hole formed by the inner ring rotor teeth, thus forming a negative pressure slurry inlet zone; the tooth end shearing inlet is formed by the inner edge region of the inner ring rotor teeth.

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