A coaxial stirring device suitable for water treatment

Abstract

The invention discloses a coaxial stirring device suitable for water treatment, and relates to the technical field of water treatment. The invention uses bevel gear meshing as the basic principle to achieve the purpose of coaxial stirring, and two impellers on an upper cone wheel and a lower cone wheel perform stirring action. On this basis, the buoyancy combined with a water leakage plate is used to filter out impurities on the surface of the liquid, and the overall operation control is performed according to a first-order model of pressure-rotational resistance and a second-order model of electromagnetic-rotational resistance. Specifically, the rotational resistance in the liquid stirring process is indirectly judged according to the pressure variation inside a rubber sleeve, and the rotation mode or rotation speed of the impeller in the upper cone wheel is adjusted by the change of the rotational resistance. Specifically, the coaxial stirring process with different speeds or directions is achieved by changing the current in the winding coil, and the purpose is to maintain a better stirring effect and meet different stirring requirements.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, and in particular to a coaxial stirring device suitable for water treatment. Background Art

[0002] The essence of water treatment is the process of purifying water through relevant physical or chemical reactions. In order to speed up the treatment, a stirring component needs to be installed simultaneously in the current water treatment equipment. The principle is to use structures such as impellers to drive the water to flow, promote solid precipitation or contact with chemical agents, etc.

[0003] The current stirring assembly adopts a single stirring shaft with a single impeller or a coaxial multi-impeller structure. It should be noted that the flow mode of water quality is only related to the physical properties of the stirring assembly (rotation speed, impeller installation method / position), which is difficult to meet the diversity of the water treatment process. For example, due to chemical reactions in the water treatment process, solids such as flocs are produced, and the physical properties of water quality (viscosity, density, etc.) change. In particular, due to the density difference / viscosity difference between solids such as flocs and water quality, the required stirring speed or stirring method is different. It can be understood that the single stirring method maintained by the single impeller structure in the coaxial multi-impeller structure cannot meet the above-mentioned usage requirements, mainly because it cannot maintain the reverse / differential stirring requirements. This application proposes a solution. Summary of the invention

[0004] The purpose of the present invention is to provide a coaxial stirring device suitable for water treatment, which is used to solve the problem that the stirring method used in the current water treatment process cannot meet the diverse usage requirements. It can be understood that: the current stirring method only maintains a single flow mode, mainly unable to maintain the reverse / differential stirring requirements.

[0005] The object of the present invention can be achieved by the following technical scheme: a coaxial stirring device suitable for water treatment, comprising a lifting seat, a complete set, a driving motor and a container, wherein the complete set is installed at the output end position of the lifting seat, and the driving motor is installed at the external position of the complete set, and the upper cone wheel, the lower cone wheel and the driving cone wheel are rotatably installed on the inside of the complete set along the upper inner wall, the lower inner wall and the inner wall position close to the driving motor, respectively, and a control component is installed on the complete set, the driving cone wheel is meshed with the upper cone wheel and the lower cone wheel, and the output shaft end of the driving motor is fixedly connected to the center point of the driving cone wheel;

[0006] An inner sleeve rod and an outer sleeve rod are respectively installed at the center point positions of the upper cone wheel and the lower cone wheel, the inner sleeve rod is inside the outer sleeve rod and the inner sleeve rod and the outer sleeve rod are slidably connected, and a mounting sleeve is installed at the lower end of the inner sleeve rod, a permanent magnet block rod is rotatably installed inside the mounting sleeve, impellers are installed at the end positions of the permanent magnet block rod and the outer sleeve rod, a water leakage plate is slidably installed on the outer sleeve rod, the impeller and the water leakage plate are located inside the container, a power block is installed at the upper end of the mounting sleeve, a winding coil is connected to the lower side of the power block, and a rubber sleeve is installed on the circumferential outer wall of the inner sleeve rod located at the lower side of the outer sleeve rod.

[0007] It is further configured as follows: the diameters of the impeller and the water leakage plate are smaller than the inner diameter of the container, and the cross section of the water leakage plate is in the shape of an inverted cone, and a plurality of float bags are installed on the lower surface of the water leakage plate.

[0008] It is further configured as follows: a plurality of air grooves are provided on the outer wall of the inner sleeve rod corresponding to the rubber sleeve.

[0009] It is further configured as follows: a plurality of directional balls are arranged between the inner sleeve rod and the rubber sleeve, a ring groove corresponding to the directional balls is provided on the outer wall of the inner sleeve rod, and the center of the directional balls is in the same plane as the center point of the rubber sleeve. It is further configured as follows: the inner sleeve rod and the assembly sleeve are rotatably connected, an air box is installed on the upper side of the upper surface of the assembly sleeve corresponding to the inner sleeve rod, the inner sleeve rod and the air box are rotatably connected, an electric power mounting seat is rotatably installed on the upper surface of the air box, a ball joint is provided on the electric power mounting seat, and the electric power mounting seat is electrically connected to the power block, a bracket is installed on the upper surface of the assembly sleeve, and the electric power mounting seat and the bracket are fixedly connected.

[0010] It is further configured as follows: an air pipe is installed on one side of the outer wall of the air box, the control component includes a controller, a gas pressure sensor, a power supply component and a current sensor, the transmission end of the gas pressure sensor is connected to the air pipe, and the ball joint is connected to the power supply component and the current sensor.

[0011] It is further configured that: during use, the driving motor drives the active cone wheel to rotate, and then drives the upper cone wheel and the lower cone wheel to rotate synchronously, and the rotation action is performed through the two fan wheels. The rotation action includes two operating modes: single-stage stirring and double-stage stirring:

[0012] Single-stage stirring: The winding coil is in a power-off and non-magnetic state. When the inner sleeve rod drives the mounting sleeve to rotate, the mounting sleeve cannot drive the permanent magnet block rod to rotate;

[0013] Double-stage stirring: The winding coil is energized and magnetized. The direction of the magnetic field of the winding coil is opposite to the rotation direction of the inner sleeve rod. When the inner sleeve rod drives the installation sleeve to rotate, the installation sleeve synchronously drives the permanent magnet block rod to rotate.

[0014] In the single-stage stirring and double-stage stirring operation modes, the pressure change inside the rubber sleeve is detected by the gas pressure sensor, and the operation system of the associated control action is set by the controller. The operation system includes the following parts during operation:

[0015] S1: Collect the pressure variation of the rubber sleeve, establish the first-order model of pressure-rotation resistance with the pressure variation, and simultaneously record the current of the winding coil, and simultaneously establish the second-order model of electric-magnetic-rotation resistance;

[0016] S2: Generate a stirring state capacity coefficient according to the pressure variation and the first-order model, and send the stirring state capacity coefficient to the second-order model, control the current of the winding coil according to the second-order model, and control the rotation speed of the impeller on the inner sleeve through the current.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present invention realizes the purpose of coaxial stirring by the transmission mode when bevel gears mesh with each other, specifically, the driving gear synchronously drives the upper bevel wheel and the lower bevel wheel to rotate at the same speed but in different directions, so as to stir the inner sleeve rod and the fan wheel on the mounting sleeve. On this basis, the water leakage plate combined with the buoyancy of the float bag on the outer sleeve rod is used to "offset" the water vortex formed during the stirring process, and to filter out low-density impurities;

[0019] 2. It is further explained that: on the basis of coaxial stirring, the pressure variation of the rubber sleeve is used to form a first-order model of pressure-rotational resistance, and then combined with the current of the winding coil to form a second-order model of electric-magnetic-rotational resistance. The first-order model and the second-order model are used to control the operation of the overall stirring process. Specifically, the rotational resistance in the liquid stirring process is indirectly judged according to the pressure variation inside the rubber sleeve, and the rotation mode or rotation speed of the fan wheel in the upper cone wheel is adjusted by the change of the rotational resistance. Specifically, by changing the current in the winding coil, a coaxial stirring process with different speeds or directions is achieved, and its purpose is to maintain a better stirring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic structural diagram of a coaxial stirring device suitable for water treatment proposed by the present invention;

[0022] Figure 2 This is a schematic structural diagram of a stirring assembly in a coaxial stirring device suitable for water treatment proposed by the present invention;

[0023] Figure 3 A cross-sectional view of a complete set of a coaxial stirring device suitable for water treatment proposed by the present invention;

[0024] Figure 4 A cross-sectional view of a stirring assembly in a coaxial stirring device suitable for water treatment proposed by the present invention;

[0025] Figure 5 A coaxial stirring device suitable for water treatment proposed by the present invention Figure 4 A front view of

[0026] Figure 6 This is a schematic structural diagram of part A of a coaxial stirring device suitable for water treatment proposed by the present invention;

[0027] Figure 7 This is a schematic structural diagram of part B in a coaxial stirring device suitable for water treatment proposed by the present invention.

[0028] In the figure: 1. container; 2. lifting seat; 3. control component; 4. assembly set; 5. drive motor; 6. air box; 7. bracket; 8. outer sleeve rod; 9. leaking plate; 10. fan wheel; 11. inner sleeve rod; 12. mounting sleeve; 13. upper cone wheel; 14. lower cone wheel; 15. active cone wheel; 16. float; 17. power mounting seat; 18. ball joint; 19. directional ball; 20. rubber sleeve; 21. air groove; 22. power block; 23. winding coil; 24. permanent magnet block rod. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1

[0031] The current stirring method is difficult to meet the diversity of the water treatment process, especially because the density difference / viscosity difference between solids such as floccules and water quality leads to differences in the required stirring speed or stirring method. It is understandable that the single stirring method maintained by the single impeller structure in the coaxial multi-impeller structure cannot meet the above-mentioned use requirements, mainly because it cannot maintain the reverse / differential stirring requirements. The following technical solutions are proposed:

[0032] Reference Figures 1 to 7 In this embodiment, a coaxial stirring device suitable for water treatment includes a lifting seat 2, a complete set 4, a driving motor 5 and a container 1. The complete set 4 is installed at the output end position of the lifting seat 2, and the driving motor 5 is installed at the external position of the complete set 4. An upper cone wheel 13, a lower cone wheel 14 and an active cone wheel 15 are rotatably installed on the upper inner wall, the lower inner wall and the inner wall position close to the driving motor 5 inside the complete set 4, and a control component 3 is installed on the complete set 4. The active cone wheel 15 is meshed with the upper cone wheel 13 and the lower cone wheel 14. The output shaft end of the driving motor 5 is fixedly connected to the center point of the active cone wheel 15;

[0033] An inner sleeve rod 11 and an outer sleeve rod 8 are respectively installed at the center point positions of the upper cone wheel 13 and the lower cone wheel 14. The inner sleeve rod 11 is inside the outer sleeve rod 8 and the inner sleeve rod 11 and the outer sleeve rod 8 are slidably connected. A mounting sleeve 12 is installed at the lower end of the inner sleeve rod 11. A permanent magnet block rod 24 is rotatably installed inside the mounting sleeve 12. Fan wheels 10 are installed at the end positions of the permanent magnet block rod 24 and the outer sleeve rod 8. A water leakage plate 9 is slidably installed on the outer sleeve rod 8. The fan wheel 10 and the water leakage plate 9 are located inside the container 1. A power block 22 is installed at the upper end of the mounting sleeve 12. A winding coil 23 is connected to the lower side of the power block 22. A rubber sleeve 20 is installed on the circumferential outer wall of the inner sleeve rod 11 located at the lower side of the outer sleeve rod 8.

[0034] Basic principle: Figure 1 and Figure 2 It is explained that: the container 1 is used to hold liquid. When the drive motor 5 is started, the upper cone wheel 13 and the lower cone wheel 14 are synchronously driven to rotate, and the rotation directions of the two are opposite, which can be understood as the rotation directions of the inner sleeve rod 11 and the outer sleeve rod 8 are opposite and at the same speed. In this regard, the impeller 10 of corresponding specifications is rotated according to the stirring requirements of different liquids, and then different stirring effects are achieved. For example, the impellers 10 are of the same specifications and are installed in the same way. When rotating in opposite directions at the same speed, the water vortex directions are opposite. The installation methods of the two impellers 10 are opposite but the specifications are different. When rotating in opposite directions at the same speed, the water vortex directions are consistent.

[0035] It should be noted that one of the impellers 10 is not directly mounted on the inner sleeve rod 11, but is mounted on the permanent magnet block rod 24. The permanent magnet block rod 24 is rotatably connected in the mounting sleeve 12. When the winding coil 23 is not energized, the permanent magnet block rod 24 will not be subjected to external forces between the inner sleeve rod 11 except for the friction between the permanent magnet block rod 24 and the mounting sleeve 12. Therefore, when the inner sleeve rod 11 rotates, the impeller 10 will not rotate synchronously; on the contrary, when the winding coil 23 is energized to generate a magnetic field, and the direction of the electromagnetic field is opposite to the rotation direction of the inner sleeve rod 11 itself, for example, when the inner sleeve rod 11 rotates clockwise, the winding coil 23 generates an electromagnetic field in a counterclockwise direction, the purpose of which is to provide an opposite external force to the permanent magnet block rod 24, so as to ensure that the impeller 10 on the inner sleeve rod 11 rotates synchronously;

[0036] When stirring liquids of different specifications, the rubber sleeve 20 and the two impellers 10 are both located inside the liquid. According to the pressure formula, the pressure of the liquid in a static state is only related to the depth, but the density is also one of the related factors. Especially for liquids that need to be stirred, it is necessary to ensure that the different components are blended and compatible or solid-liquid separation is carried out. Then, when the density changes with the degree of liquid stirring, the rubber sleeve 20 is at the same depth. It can be understood that: the depth remains unchanged and its density increases or decreases, and then the pressure changes, and the pressure inside the rubber sleeve 20 changes.

[0037] Embodiment 2

[0038] This embodiment is based on the basic principle of the first embodiment to make the following optimization scheme:

[0039] The cross section is in the shape of an inverted cone, and a plurality of floating bags 16 are installed on the lower surface of the leaking plate 9. A plurality of air grooves 21 are provided on the outer wall of the inner sleeve rod 11 corresponding to the rubber sleeve 20. A plurality of directional balls 19 are provided between the inner sleeve rod 11 and the rubber sleeve 20. An annular groove corresponding to the directional balls 19 is provided on the outer wall of the inner sleeve rod 11. The center of the directional balls 19 is in the same plane as the center point of the rubber sleeve 20. The inner sleeve rod 11 is rotatably connected to the total sleeve 4. An air box 6 is installed on the upper surface of the total sleeve 4 corresponding to the upper side of the inner sleeve rod 11. The inner sleeve rod 11 and the air box 6 are rotatably connected. Dynamic connection, an electric power mounting seat 17 is rotatably installed on the upper surface of the gas box 6, a ball joint 18 is provided on the electric power mounting seat 17, and the electric power mounting seat 17 is electrically connected to the power block 22, a bracket 7 is installed on the upper surface of the total set 4, the electric power mounting seat 17 and the bracket 7 are fixedly connected, an air pipe is installed on one side of the outer wall of the gas box 6, the control component 3 includes a controller, a gas pressure sensor, a power supply component and a current sensor, the transmission end of the gas pressure sensor is connected to the air pipe, and the ball joint 18 is connected to the power supply component and the current sensor.

[0040] Purpose of the scheme: First of all, it should be explained that when the liquid is stirred, the upper surface of the liquid is subjected to the centrifugal force and gravity to generate a downward water vortex. When the liquid is stirred, the water leakage plate 9 is always kept above the liquid surface by the buoyancy of the float 16. Therefore, the low-density solid impurities in the liquid will always float above the liquid surface and gradually flow down along the slope of the water leakage plate 9, thereby ensuring that the low-density solid impurities are concentrated and collected in the internal position of the water leakage plate 9;

[0041] In order to maintain the rotation process of the inner sleeve rod 11 and the air-increasing process of the rubber sleeve 20, firstly, an air groove 21 corresponding to the rubber sleeve 20 is added on the inner sleeve rod 11, and in order to avoid the irregular deformation degree of the rubber sleeve 20, which affects the flow mode of the liquid with the stirring action, a directional ball 19 is added, the purpose of which is to ensure that the rubber sleeve 20 always maintains a circular arc surface during the process of compression deformation;

[0042] It should be noted that in order to avoid interfering with the rotation of the inner sleeve rod 11, the power mounting seat 17 rotates synchronously with the inner sleeve rod 11 at the same speed. In order to detect the air pressure and energize the air box 6, it is necessary to maintain a rotational connection with the inner sleeve rod 11, and the two are internally connected. To connect the power mounting seat 17, a freely movable spherical joint 18 is required to avoid motion interference.

[0043] Embodiment 3

[0044] This embodiment proposes the following use process and operation system for the coaxial stirring device in the present invention:

[0045] During use, the driving motor 5 drives the active cone wheel 15 to rotate, and then synchronously drives the upper cone wheel 13 and the lower cone wheel 14 to rotate, and the two fan wheels 10 perform a rotation action, and the rotation action includes two operating modes: single-stage stirring and double-stage stirring:

[0046] Single-stage stirring: the winding coil 23 is in a power-off and non-magnetic state. When the inner sleeve rod 11 drives the mounting sleeve 12 to rotate, the mounting sleeve 12 cannot drive the permanent magnet block rod 24 to rotate;

[0047] Two-stage stirring: the winding coil 23 is energized and magnetized, and the direction of the magnetic field of the winding coil 23 is opposite to the rotation direction of the inner sleeve rod 11. When the inner sleeve rod 11 drives the mounting sleeve 12 to rotate, the mounting sleeve 12 synchronously drives the permanent magnet block rod 24 to rotate;

[0048] In the single-stage stirring and double-stage stirring operation modes, the pressure change inside the rubber sleeve 20 is detected by the gas pressure sensor, and the operation system of the associated control action is set by the controller. The operation system includes the following parts during the operation process:

[0049] S1: collecting the pressure variation of the rubber sleeve 20, establishing a first-order model of pressure-rotation resistance with the pressure variation, and synchronously recording the current of the winding coil 23, and synchronously establishing a second-order model of electric-magnetic-rotation resistance;

[0050] S2: Generate a stirring state capacity coefficient according to the pressure variation and the first-order model, and send the stirring state capacity coefficient to the second-order model, control the current of the winding coil 23 according to the second-order model, and control the rotation speed of the impeller 10 on the inner sleeve 11 through the current.

[0051] Solution description: First, refer to the pressure formula for explanation: P=ρgh, where ρ represents the density of the liquid, g is the acceleration of gravity, and h represents the depth of the liquid. The inside of the rubber sleeve 20 is connected to the gas pressure sensor. The purpose is to use the gas pressure sensor to detect the internal pressure of the rubber sleeve 20. In the initial state, the inside of the rubber sleeve 20 is full of gas, so the initial value of the gas pressure sensor is a fixed value, and its initial value can be set to 0.

[0052] Then, the liquid to be stirred and mixed is poured into the container 1, and the pressure of the liquid will further squeeze the rubber sleeve 20, causing the gas pressure sensor to rise. Referring to P=ρgh, the depth of the liquid remains constant, and the liquid pressure P remains stable, but its ρ changes with the stirring process, resulting in irregular changes in the liquid pressure in actual conditions. It should be further explained that when the density of the liquid changes, the resistance generated by the rotation of the impeller 10 will also change. For example, after the density of the liquid tends to be stable, the pressure generated by the liquid tends to be stable, and then the squeezing force on the rubber sleeve 20 is equal;

[0053] In combination with the first embodiment, it is explained that: in the two-stage stirring process, the impeller 10 on the inner sleeve rod 11 is mainly adjusted, because the rotation speed of the impeller 10 on the outer sleeve rod 8 is only related to the output power of the drive motor 5, and the rotation speed of the impeller 10 on the inner sleeve rod 11 is not directly affected by the drive motor 5. For example, when the winding coil 23 is energized to generate an electromagnetic field, the impeller 10 on the permanent magnet block rod 24 can be driven to rotate. The difference is that in order to ensure that the inner sleeve rod 11 can drive the permanent magnet block rod 24 to rotate, the magnetic field force direction of the electromagnetic field needs to be opposite to the rotation direction of the inner sleeve rod 11, so that the impeller 10 on the permanent magnet block rod 24 can be driven to rotate by the electromagnetic field force;

[0054] It is to be noted again that the first-order model of pressure-rotational resistance can be displayed in the form of a curve. Specifically, there is variable management between pressure and rotational resistance. After the rotational resistance tends to be stable, the pressure variable value will also be in a relatively stable state. Similarly, in the second-order model of electric-magnetic-rotational resistance, firstly, according to the conversion method between electromagnetics, the magnitude of the magnetic field force generated by the winding coil 23 is directly calculated according to the magnitude of the energized current. The magnitude of the magnetic field force is directly related to the rotation speed of the impeller on the inner sleeve rod 11, and the rotational resistance is mainly determined by the synchronous rotation or asynchronous rotation of the two impellers 10, which is specifically related to the stirring requirements of the liquid, such as making the internal components of the liquid undergo solid-liquid separation or making the internal components of the liquid blended and compatible. For this, the liquid density has differences along its numerical direction. For example, when performing solid-liquid separation, the liquid density finally presents a state in which the upper density is lower than the lower density, while in blending and compatibility, the liquid density finally presents a state in which the density is equal.

[0055] What is explained in the second-order model of the electro-magnetic-rotational resistance is that: the conversion method between the electromagnetics can refer to the electromagnetic theory, which is mainly to change the "fixing degree" of the mounting sleeve 12 to the permanent magnet block rod 24 by changing the magnetic field force of the winding coil 23. When the magnetic field force reaches the limit value, it is used to indicate that the "fixing degree" reaches the maximum value. It can be understood that when the inner sleeve rod 11 rotates, the impeller 10 thereon is equivalent to being "fixed" on the inner sleeve rod 11, so that the rotation speeds of the two impellers 10 are equal. On the contrary, as the magnetic field force decreases, the "fixing degree" gradually decreases. When it decreases to 0, it can be understood that the mounting sleeve 12 will not "fix" the permanent magnet block rod 24, so the impeller 10 on the inner sleeve rod 11 will not rotate synchronously, but only flow in a small range with the flow of the liquid. It can be understood that: as the magnetic field force decreases, the "fixing degree" gradually decreases to 0, and the rotation speed of the impeller 10 on the inner sleeve rod 11 slowly decreases until it is 0. Therefore, in actual use, the power supply component provides a corresponding amount of power-on current, and the value of the power-on current is controlled by the current sensor;

[0056] In this regard, as shown in Example 1, on the basis that the two impellers 10 can rotate coaxially, the coaxial but different directions and the same speed can be achieved by changing the installation method of the two impellers 10 of the same specifications, or by controlling the energization direction and energization magnitude of the winding coil 23 to change the electromagnetic field direction and the magnitude of the magnetic field force, and change the "degree of fixation" between the mounting sleeve 12 and the permanent magnet block rod 24. When the rotation speed of the impeller 10 on the outer sleeve rod 8 is a constant value, the rotation speed of the impeller 10 on the inner sleeve rod 11 is lower than the constant value. The purpose is to meet different stirring requirements. In the present invention, there is no restriction on the stirring requirements, so the relevant parameters therein are not limited, and are only used to describe the two operating modes of single-stage stirring and double-stage stirring in coaxial stirring.

[0057] In summary: the purpose of coaxial stirring is achieved by taking bevel gear meshing as the basic principle, and the two impellers on the upper cone wheel and the lower cone wheel are used for stirring. On this basis, the buoyancy combined with the leaky plate is used to filter out impurities on the liquid surface, and the overall operation is controlled according to the first-order model of pressure-rotational resistance and the second-order model of electric-magnetic-rotational resistance. Specifically, the rotational resistance in the liquid stirring process is indirectly judged according to the pressure change inside the rubber sleeve, and the rotation mode or rotation speed of the impeller in the upper cone wheel is adjusted by the change of rotational resistance. Specifically, the coaxial stirring process with different speeds or directions is achieved by changing the current in the winding coil, and its purpose is to maintain a better stirring effect.

[0058] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A coaxial stirring device suitable for water treatment, characterized in that: The invention comprises a lifting seat (2), a complete set (4), a driving motor (5) and a container (1), wherein the complete set (4) is mounted at the output end of the lifting seat (2), the driving motor (5) is mounted at an external position of the complete set (4), an upper cone wheel (13), a lower cone wheel (14) and a driving cone wheel (15) are rotatably mounted on the inside of the complete set (4) along the upper inner wall, the lower inner wall and the inner wall position close to the driving motor (5), and a control component (3) is mounted on the complete set (4), the driving cone wheel (15) is meshed with the upper cone wheel (13) and the lower cone wheel (14), and the output shaft end of the driving motor (5) is fixedly connected to the center point of the driving cone wheel (15); An inner sleeve rod (11) and an outer sleeve rod (8) are respectively installed at the center point positions of the upper cone wheel (13) and the lower cone wheel (14); the inner sleeve rod (11) is inside the outer sleeve rod (8) and the inner sleeve rod (11) and the outer sleeve rod (8) are slidably connected, and a mounting sleeve (12) is installed at the lower end position of the inner sleeve rod (11); a permanent magnet block rod (24) is rotatably installed inside the mounting sleeve (12); an impeller (10) is installed at the end positions of the permanent magnet block rod (24) and the outer sleeve rod (8); a water leakage plate (9) is slidably installed on the outer sleeve rod (8); the impeller (10) and the water leakage plate (9) are located inside the container (1); a power block (22) is installed at the upper end of the mounting sleeve (12); a winding coil (23) is connected to the lower side of the power block (22); and a rubber sleeve (20) is installed at the circumferential outer wall position of the inner sleeve rod (11) located at the lower side of the outer sleeve rod (8); The inner sleeve rod (11) is provided with a plurality of air grooves (21) on the outer wall position corresponding to the rubber sleeve (20), a plurality of directional balls (19) are arranged between the inner sleeve rod (11) and the rubber sleeve (20), an annular groove corresponding to the directional balls (19) is provided on the outer wall position of the inner sleeve rod (11), the center of the circle of the directional balls (19) and the center point of the rubber sleeve (20) are in the same plane, the inner sleeve rod (11) and the assembly sleeve (4) are rotatably connected, an air box (6) is installed on the upper surface of the assembly sleeve (4) corresponding to the upper side position of the inner sleeve rod (11), the inner sleeve rod (11) and the air box (6) are rotatably connected, and the air box (6) is An electric power mounting seat (17) is rotatably mounted on the surface, a spherical joint (18) is provided on the electric power mounting seat (17), and the electric power mounting seat (17) is electrically connected to the power block (22); a bracket (7) is mounted on the upper surface of the assembly (4), and the electric power mounting seat (17) and the bracket (7) are fixedly connected; an air pipe is mounted on one side of the outer wall of the air box (6); the control component (3) includes a controller, a gas pressure sensor, a power supply component and a current sensor; a transmission end of the gas pressure sensor is connected to the air pipe, and the spherical joint (18) is connected to the power supply component and the current sensor; During use, the driving motor (5) drives the active cone wheel (15) to rotate, and then synchronously drives the upper cone wheel (13) and the lower cone wheel (14) to rotate, and the two fan wheels (10) perform a rotation action, and the rotation action includes two operating modes: single-stage stirring and double-stage stirring: Single-stage stirring: the winding coil (23) is in a power-off and non-magnetic state, and when the inner sleeve rod (11) drives the mounting sleeve (12) to rotate, the mounting sleeve (12) cannot drive the permanent magnet block rod (24) to rotate; Two-stage stirring: the winding coil (23) is in a powered and magnetized state, the magnetic field direction of the winding coil (23) is opposite to the rotation direction of the inner sleeve rod (11), and when the inner sleeve rod (11) drives the mounting sleeve (12) to rotate, the mounting sleeve (12) synchronously drives the permanent magnet block rod (24) to rotate; In the single-stage stirring and double-stage stirring operation modes, the pressure change inside the rubber sleeve (20) is detected by a gas pressure sensor, and an operation system of associated control actions is set by a controller. The operation system includes the following parts during operation: S1: collecting the pressure variation of the rubber sleeve (20), establishing a first-order model of pressure-rotation resistance with the pressure variation, and simultaneously recording the current of the winding coil (23), and simultaneously establishing a second-order model of electric-magnetic-rotation resistance; S2: Generate a stirring state capacity coefficient according to the pressure variation and the first-order model, and send the stirring state capacity coefficient to the second-order model, control the current of the winding coil (23) according to the second-order model, and control the rotation speed of the impeller (10) on the inner sleeve (11) through the current.

2. A coaxial stirring device suitable for water treatment according to claim 1, characterized in that: The diameters of the impeller (10) and the water leakage plate (9) are smaller than the inner diameter of the container (1), and the cross section of the water leakage plate (9) is in the shape of an inverted cone. A plurality of floating bags (16) are installed on the lower surface of the water leakage plate (9).

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