Evaporative crystallization treatment device for zero discharge of high-salinity wastewater

Abstract

The invention relates to the technical field of water pollution treatment, in particular to an evaporative crystallization treatment device for zero discharge of high-salinity wastewater, which is characterized in that a steam heating system is arranged at the bottom of a distillation kettle body, a crystallization concentrate discharge port is formed in one end of the distillation kettle body, and a waste liquid inlet pipe and a steam outlet are formed in the other end of the distillation kettle body; the two ends of the rectangular stirring shaft are of cylindrical structures, and the cylindrical structure of one end is connected with a stirring piece power driving assembly outside the distillation kettle body; a plurality of stirring and crushing parts are arranged on the rectangular stirring shaft; every two stirring and crushing parts form a group, and the two stirring and crushing parts in each group are arranged in a relatively staggered manner, are connected in a magnetic attraction manner and are fixed on the rectangular stirring shaft through locking parts; every two adjacent groups of stirring and crushing parts are distributed in a cross shape.

Description

Technical Field

[0001] This invention relates to the field of water pollution treatment technology, specifically to an evaporation and crystallization treatment device for zero discharge of high-salinity wastewater. Background Technology

[0002] In zero-discharge evaporation crystallization treatment equipment for high-salinity wastewater, the crushing device is used to remove scale adhering to the inner surface of the crystallization tank, ensuring the equipment's heat transfer efficiency and continuous operation. Existing crushing devices mostly employ a fixed structure, with a constant scraping force during operation. However, scale adhesion varies significantly in different areas of the crystallization tank due to different formation conditions. This structure cannot adapt to the uneven scale adhesion, leading to uneven stress on the crushing device during operation, localized overload, and potential damage such as component deformation and breakage. Frequent shutdowns for component replacement are necessary, increasing maintenance costs and affecting the stable operation of the evaporation crystallization system. Current technology has not yet effectively solved this problem. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing an evaporation crystallization treatment device for zero discharge of high-salt wastewater. This device can adapt to the differences in the adhesion of scale within the crystallization tank, dynamically adjust the scraping force of the crushing device, effectively balance the forces on each part, avoid local overload, and fundamentally solve the problems of deformation and breakage caused by uneven force on the crushing device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: It includes a distillation vessel, the bottom of which is equipped with a steam heating system. One end of the distillation vessel is provided with a discharge port for the crystallized concentrate, and the other end is provided with a waste liquid inlet pipe and a steam outlet. A rectangular stirring shaft is rotatably installed inside the distillation vessel. Both ends of the rectangular stirring shaft are cylindrical structures, one of which is connected to a stirring component power drive assembly outside the distillation vessel. Several stirring and crushing components are arranged on the rectangular stirring shaft. The stirring and crushing components are arranged in pairs, with the two stirring and crushing components in each pair being staggered relative to each other and magnetically connected, and fixed to the rectangular stirring shaft by locking components. Adjacent groups of stirring and crushing components are arranged in a cross shape.

[0005] Furthermore, the stirring and crushing component includes a stirring rod and crushing blades. The stirring rod is U-shaped, and several crushing blades are installed on its horizontal side. The two vertical rods of the stirring rod are movably sleeved on a rectangular stirring shaft using rectangular collars. Electromagnetic ring one and electromagnetic ring two are fixed on the left and right sides of the rectangular collar, respectively.

[0006] Furthermore, a set of agitating and crushing components is equipped with eight locking components, which are distributed on the rectangular agitating shaft in pairs, fours, and two adjacent to each other.

[0007] Furthermore, the locking component includes a support seat fixed in the internal cavity of the rectangular stirring shaft, a guide sleeve symmetrically fixed in the support seat, and a pin movably installed in the guide sleeve by means of a spring. The outer end of the pin passes through the outer wall of the rectangular stirring shaft and is inserted into the rectangular collar.

[0008] Furthermore, the rectangular stirring shaft is a split structure, and the joint is sealed with a sealing gasket.

[0009] Furthermore, the locking components in the adjacent sets of mixing and crushing components are arranged in a cross shape.

[0010] Furthermore, the two longitudinal rods of the stirring rod are integrally formed with crushing blades on their front and rear walls.

[0011] Furthermore, the two ends of the crossbar of the stirring rod are provided with a protruding structure, which is movably inserted into the movable guide groove opened at the ends of the two longitudinal rods, and the upper and lower sides are connected to the groove wall of the movable guide groove by a matrix of springs; the front and rear walls of the protruding structure slide against the groove wall of the movable guide groove.

[0012] The working principle of this invention is as follows: The distillation vessel is connected to the evaporation crystallization system and started. The waste liquid is heated and evaporated in the distillation vessel. The stirring component drives the stirring rod to rotate, and the waste liquid is stirred during the evaporation process. When crystals are formed, they are broken up. In the initial state, the two stirring and crushing components in each group are set up adjacent to each other at the farthest distance and locked by locking components. At this time, the first and second electromagnet rings in each stirring and crushing component are not energized, and the electromagnet plates in each locking component are also not energized. The first spring is in the natural state. In this state, the pins extend out. The pins used to fix the stirring and crushing components are inserted into the rectangular collar, and the pins not involved in fixing are inserted into the side wall of the rectangular stirring shaft to block the pin holes and prevent waste liquid and crystals from entering. After a period of use, in the two adjacent rectangular collars of the two mixing and crushing components in a set, the electromagnet ring 2 on the right and the electromagnet ring 1 on the left are energized and have the same pole. The electromagnet ring 1 on the left and the electromagnet ring 2 on the right of these two rectangular collars are also energized and have the same pole. In the other two rectangular collars of the two mixing and crushing components in the set, which are far apart to the left and right, the electromagnet ring 1 on the left and the electromagnet ring 2 on the right are not energized, and the electromagnet ring 2 on the right and the electromagnet ring 1 on the left of these two rectangular collars are energized and have the same pole. However, the electromagnet rings in the two mixing and crushing components in the set are magnetically attracted to each other. The second and the first electromagnet ring are opposite poles; at the same time, in one of the mixing and crushing parts in the group, except for two locking parts that are not energized, the remaining locking parts are energized and magnetized, so that the pin is magnetically attracted by the electromagnet and detaches from the rectangular collar. In this state, the mixing and crushing parts corresponding to the energized locking parts are attracted to each other by the magnetic attraction of like poles repelling and opposite poles attracting. When the magnetic attraction is in place, all eight locking parts in the group are de-energized. At this time, the pin is reset and re-inserted into the rectangular collar under the elastic force of the first spring, thus fixing the position of the mixing and crushing parts at this time. When it is necessary to reset two of the mixing and crushing components in a group to their initial state, the direction of the current in the energized electromagnet rings one and two in the one mixing and crushing component whose position has shifted is changed, thereby changing the polarity under magnetic attraction. At the same time, the locking component in the other mixing and crushing component whose position has not changed is kept de-energized, while the remaining locking components are energized so that the pin disengages from the rectangular collar. In this state, the mixing and crushing component corresponding to the energized locking component will be displaced under the magnetic attraction of like poles repelling and unlike poles attracting. After resetting, all locking components are de-energized and demagnetized, and the pin is reinserted into the rectangular collar to lock and fix the position. After the position is fixed, all electromagnet rings one and two are de-energized and demagnetized, restoring the initial state.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides an evaporation crystallization treatment device for zero discharge of high-salt wastewater, which can adapt to the difference in the adhesion force of scale in the crystallization tank, dynamically adjust the scraping force of the crushing device, effectively balance the force on each part, avoid local overload, and fundamentally solve the problem of deformation and breakage of the crushing device caused by uneven force; at the same time, it extends the service life of the vulnerable parts of the crushing device, reduces the frequency of downtime maintenance, and reduces equipment maintenance costs; it ensures stable operation of the crushing device, ensures thorough removal of scale in the crystallization tank, maintains continuous and efficient operation of the evaporation crystallization system, and improves the overall reliability and economy of the equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the rectangular stirring shaft and the stirring and crushing components in this invention.

[0016] Figure 3 This is a schematic diagram of the internal structure of the rectangular stirring shaft in this invention.

[0017] Figure 4 This is a cross-sectional schematic diagram of the rectangular stirring shaft in this invention.

[0018] Figure 5 yes Figure 4 Enlarged view of section A.

[0019] Figure 6 This is a schematic diagram of the structure of the stirring and crushing component in this invention.

[0020] Figure 7 yes Figure 6 Enlarged view of section B in the middle.

[0021] Figure 8 This is a schematic diagram showing the location of the stirring and crushing components in Example 1.

[0022] Figure 9 This is a schematic diagram showing the location of the stirring and crushing component in Example 2.

[0023] Figure 10 This is a schematic diagram of the stirring rod in this invention.

[0024] Figure 11 This is a schematic diagram of the switching process of the stirring and crushing component in this invention to the state of Embodiment 1.

[0025] Figure 12 This is a schematic diagram of the process of switching the stirring and crushing component in this invention from the state of Example 1 to the initial state.

[0026] Figure 13 This is a schematic diagram of the switching process of the stirring and crushing component in this invention to the state of Embodiment 2.

[0027] Figure 14 This is a schematic diagram of the process of switching the stirring and crushing component in this invention from the state of Example 2 to the initial state.

[0028] Explanation of reference numerals in the attached figures: 1. Distillation vessel body; 2. Steam heating system; 3. Crystallized concentrate discharge port; 4. Stirring component power drive assembly; 5. Waste liquid inlet pipe; 6. Steam outlet; 7. Rectangular stirring shaft; 8. Stirring and crushing component; 9. Stirring rod; 10. Crushing blade; 11. Movable guide groove; 12. Crushing blade; 13. Locking component; 14. Cover plate; 15. Guide sleeve; 16. Spring 1; 17. Pin; 18. Support base; 19. Electromagnetic ring 1; 20. Electromagnetic ring 2; 21. Electromagnetic sheet; 22. Rectangular collar; 23. Spring 2. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1-10 As shown, this specific embodiment adopts the following technical solution: It includes a distillation vessel 1, the bottom of which is equipped with a steam heating system 2. One end of the distillation vessel 1 is provided with a crystallization concentrate discharge port 3, and the other end is provided with a waste liquid inlet pipe 5 and a steam outlet 6. A rectangular stirring shaft 7 is rotatably installed inside the distillation vessel 1. The rectangular stirring shaft 7 is a split structure (with a cover plate 12 on the upper part), and the docking part between the cover plate 12 and the lower open rectangular stirring shaft 7 body is sealed with a sealing gasket (the rectangular stirring shaft 7 is equipped with a battery for powering the magnet 19, electromagnet ring 17, and electromagnet ring 18, as well as a wireless transceiver wirelessly connected to the main control cabinet, all of which are one-to-one wirelessly controlled); the rectangular stirring shaft 7 is rotatably installed inside the distillation vessel 1. The stirring shaft 7 has cylindrical structures at both ends, with one end connected to the stirring component drive assembly 4 outside the distillation vessel body 1. Four stirring and crushing components 8 are mounted on the rectangular stirring shaft 7. The four stirring and crushing components 8 are arranged in pairs, with two components in each pair staggered (the two on the left are vertically opposite each other, and the two on the right are front-to-back opposite each other), magnetically connected, and fixed to the rectangular stirring shaft 7 using locking components 11. Each pair of stirring and crushing components 8 is equipped with eight locking components 11, distributed in pairs, fours, and two adjacent pairs on the rectangular stirring shaft 7. Adjacent pairs of stirring and crushing components 8 are arranged in a cross shape; the locking components 11 in adjacent pairs of stirring and crushing components 8 are also arranged in a cross shape. The stirring and crushing component 8 includes a stirring rod 9 and crushing blades 10. The stirring rod 9 is U-shaped, with several crushing blades 10 mounted on its horizontal side. The two vertical rods of the stirring rod 9 are movably fitted onto the rectangular stirring shaft 7 using rectangular collars 20. Electromagnetic ring 17 and electromagnetic ring 28 are fixed to the left and right sides of the rectangular collar 20, respectively. The front and rear walls of the two vertical rods of the stirring rod 9 are integrally formed with crushing blades 9-1, which play an auxiliary crushing role. The two ends of the horizontal rod of the stirring rod 9 are provided with protruding structures, which are movably inserted into the movable guide grooves 9-2 opened at the ends of the two vertical rods. The upper and lower sides are connected to the groove walls of the movable guide grooves 9-2 by several springs 21 distributed in a matrix. The front and rear walls of the protruding structures slide against the groove walls of the movable guide grooves 9-2. Under the elastic force of the springs 21, the crushing blades 10 are always in contact with the inner wall of the distillation vessel 1, which has an elastic floating function and adapts to the curvature of the inner wall of the distillation vessel 1. The locking member 11 includes a support seat 16 fixed in the internal cavity of the rectangular stirring shaft 7. A guide sleeve 13 is symmetrically fixed in the support seat 16. A pin 15 is movably installed in the guide sleeve 13 by means of a spring 14. The outer end of the pin 15 passes through the outer wall of the rectangular stirring shaft 7 and is inserted into the rectangular collar 20.

[0031] Example 1: See Figure 11 and Figure 12 The working principle of this embodiment is as follows (only the positional relationship of the two stirring and crushing components 8 in one group is shown): In the initial state, the two stirring and crushing components 8 are arranged adjacent to each other at the farthest distance and locked by the locking component 11. At this time, the electromagnet ring 17 and electromagnet ring 18 in the two stirring and crushing components 8 are not energized, and the electromagnet plates 19 in each locking component 11 are also not energized. The spring 14 is in the natural state. In this state, the pin 15 extends out. The pin used to fix the stirring and crushing component 8 is inserted into the rectangular collar 20. The pin 15 that is not involved in fixing is inserted into the side wall of the rectangular stirring shaft 7 to block the pin hole and prevent waste liquid and crystals from entering. After a period of use, the electromagnet ring 18 on the right side and the electromagnet ring 17 on the left side of the two adjacent rectangular collars 20 in the two mixing and crushing components 8 are energized and form the N pole. The electromagnet ring 17 on the left side and the electromagnet ring 18 on the right side of the two rectangular collars 20 are also energized and form the S pole. The electromagnet ring 17 on the left side and the electromagnet ring 18 on the right side of the other two rectangular collars 20 that are far apart in the two mixing and crushing components 8 are not energized, and the electromagnet ring 18 on the right side and the electromagnet ring 17 on the left side of the two rectangular collars 20 are energized and form the N pole. At the same time, the two locking parts 11 in the left mixing and crushing component 8 are not energized, and the remaining six locking parts 11 are energized and magnetized, so that the pin 15 is magnetically attracted by the electromagnet piece 19 and disengages from the rectangular collar 20. In this state, the right mixing and crushing component 8 moves to the left under the repulsive force of like poles. It is magnetically attracted to the stirring and crushing component 8 on the left side under the attraction of opposite poles. At this time, the six locking components 11 that are energized are de-energized, and the pin 15 is reset and re-inserted into the rectangular collar 20 under the elastic force of the spring 14 to fix the position of the stirring and crushing component 8 on the right side. When it is necessary to reset the two stirring and crushing components 8 to their initial state, the current direction of the electromagnet ring 17 and electromagnet ring 18 at the left end of the stirring and crushing component 8 on the right is changed, so that the electromagnet ring 17 at the left end changes from the S pole to the N pole, and the electromagnet ring 18 at the right end changes from the N pole to the S pole, and the electromagnet ring 17 at the right end changes from the N pole to the S pole; at the same time, the locking component 11 in the stirring and crushing component 8 on the left is kept de-energized, and the other six locking components 11 are energized so that the pin 15 disengages from the rectangular collar 20. In this state, the stirring and crushing component 8 on the right is displaced to the right under the magnetic repulsion of like poles and attracted under the attraction of opposite poles, thus achieving reset. Then, the six energized locking components 11 are de-energized and demagnetized, and the pin 15 is reinserted into the rectangular collar 20 and locked in place.

[0032] Example 2: See Figure 13 and Figure 14 The working principle of this embodiment is as follows (only the positional relationship of the two stirring and crushing components 8 in one group is shown): In the initial state, the two stirring and crushing components 8 are arranged adjacent to each other at the furthest distance and locked by the locking component 11. At this time, the electromagnet ring 17 and electromagnet ring 18 in the two stirring and crushing components 8 are not energized, and the electromagnet plates 19 in each locking component 11 are also not energized. The spring 14 is in the natural state. In this state, the pin 15 extends out. The pin used to fix the stirring and crushing component 8 is inserted into the rectangular collar 20. The pin 15 that is not involved in fixing is inserted into the side wall of the rectangular stirring shaft 7 to block the pin hole and prevent waste liquid and crystals from entering (the above initial state is the same as in Example 1). After a period of use, the electromagnet ring 18 on the right side and the electromagnet ring 17 on the left side of the two adjacent rectangular collars 20 in the two mixing and crushing components 8 are energized and form the N pole. The electromagnet ring 17 on the left side and the electromagnet ring 18 on the right side of the two rectangular collars 20 are also energized and form the S pole. The electromagnet ring 17 on the left side and the electromagnet ring 18 on the right side of the other two rectangular collars 20 that are far apart in the two mixing and crushing components 8 are not energized, and the electromagnet ring 18 on the right side and the electromagnet ring 17 on the left side of the two rectangular collars 20 are energized and form the N pole. At the same time, the two locking parts 11 in the right mixing and crushing component 8 are not energized, and the remaining six locking parts 11 are energized and magnetized, so that the pin 15 is magnetically attracted by the electromagnet piece 19 and disengages from the rectangular collar 20. In this state, the left mixing and crushing component 8 moves to the right under the repulsion of like poles. It is magnetically attracted to the stirring and crushing component 8 on the right side under the attraction of opposite poles. At this time, the six locking components 11 that are energized are de-energized. The pin 15 is reset and re-inserted into the rectangular collar 20 under the elastic force of the spring 14, thus fixing the position of the stirring and crushing component 8 on the left side. After the position is fixed, all the electromagnet rings 17 and 18 are de-energized and demagnetized, returning to the initial state. When it is necessary to reset the two mixing and crushing components 8 to their initial state, the current direction of the electromagnet ring 18 at the left end of the left mixing and crushing component 8 is changed, so that the electromagnet ring 18 changes from the N pole to the S pole, and the electromagnet ring 17 at the right end changes from the N pole to the S pole, and the electromagnet ring 18 changes from the S pole to the N pole. At the same time, the locking component 11 in the right mixing and crushing component 8 is kept de-energized, and the other six locking components 11 are energized, so that the pin 15 disengages from the rectangular collar 20. In this state, the left mixing and crushing component 8 is displaced to the left under the magnetic repulsion of like poles and attracted by the attraction of opposite poles, thus achieving reset. Then, the six energized locking components 11 are de-energized and demagnetized, and the pin 15 is reinserted into the rectangular collar 20 and locked in place. After the position is fixed, all electromagnet rings 17 and 18 are de-energized and demagnetized, restoring the initial state.

[0033] Compared with the prior art, the beneficial effects of the present invention are: 1. The adjustable movement of the mixing and crushing parts can adapt to the differences in the adhesion of scale, dynamically adjust the scraping force, balance the force on the equipment, and avoid deformation and breakage of the crushing parts.

[0034] 2. Extend the service life of vulnerable parts, reduce downtime for maintenance, and lower equipment maintenance costs.

[0035] 3. Scale removal is more thorough, ensuring the heat transfer efficiency of the distillation vessel and maintaining continuous and efficient system operation.

[0036] 4. The locking mechanism provides a reliable seal, preventing waste liquid and crystals from entering the shaft and ensuring normal equipment operation. For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. An evaporation and crystallization treatment device for zero discharge of high-salinity wastewater, characterized in that: It includes a distillation vessel (1), the bottom of which is provided with a steam heating system (2). One end of the distillation vessel (1) is provided with a discharge port (3) for the crystal concentrate, and the other end is provided with a waste liquid inlet pipe (5) and a steam outlet (6). A rectangular stirring shaft (7) is rotatably installed inside the distillation vessel (1). The two ends of the rectangular stirring shaft (7) are cylindrical structures, and the cylindrical structure at one end is connected to the stirring component power drive assembly (4) outside the distillation vessel (1). Several stirring and crushing components (8) are provided on the rectangular stirring shaft (7). The several stirring and crushing components (8) are arranged in pairs, and the two stirring and crushing components (8) in each group are staggered relative to each other and magnetically connected, and fixed to the rectangular stirring shaft (7) by a locking component (11). The two adjacent groups of stirring and crushing components (8) are arranged in a cross shape.

2. The evaporation crystallization treatment device for zero discharge of high-salinity wastewater according to claim 1, characterized in that: The stirring and crushing component (8) includes a stirring rod (9) and crushing blades (10). The stirring rod (9) is U-shaped and has several crushing blades (10) installed on its horizontal side. The two vertical rods of the stirring rod (9) are movably sleeved on the rectangular stirring shaft (7) using a rectangular collar (20). Electromagnetic ring one (17) and electromagnetic ring two (18) are fixed on the left and right sides of the rectangular collar (20) respectively.

3. The evaporation crystallization treatment device for zero discharge of high-salinity wastewater according to claim 2, characterized in that: A set of stirring and crushing components (8) is equipped with eight locking components (11), which are distributed on the rectangular stirring shaft (7) in pairs, fours, and two adjacent to each other.

4. The evaporation crystallization treatment device for zero discharge of high-salinity wastewater according to claim 3, characterized in that: The locking component (11) includes a support seat (16) fixed in the cavity inside the rectangular stirring shaft (7). A guide sleeve (13) is symmetrically fixed in the support seat (16). A pin (15) is movably installed in the guide sleeve (13) by means of a spring (14). The outer end of the pin (15) passes through the outer wall of the rectangular stirring shaft (7) and is inserted into the rectangular collar (20).

5. The evaporation crystallization treatment device for zero discharge of high-salinity wastewater according to claim 4, characterized in that: The rectangular stirring shaft (7) is a split structure, and the docking part is sealed with a sealing gasket.

6. The evaporation crystallization treatment device for zero discharge of high-salinity wastewater according to claim 5, characterized in that: The locking parts (11) in the two adjacent sets of mixing and crushing parts (8) are arranged in a cross shape.

7. The evaporation crystallization treatment device for zero discharge of high-salinity wastewater according to claim 6, characterized in that: The two longitudinal bars of the stirring rod (9) are integrally formed with crushing blades (9-1) on their front and rear walls.

8. The evaporation crystallization treatment device for zero discharge of high-salinity wastewater according to claim 7, characterized in that: The two ends of the crossbar of the stirring rod (9) are provided with a protruding structure. The protruding structure is movably inserted into the movable guide groove (9-2) opened at the ends of the two longitudinal rods. The upper and lower sides are connected to the groove wall of the movable guide groove (9-2) by a matrix of several springs (21). The front and rear walls of the protruding structure slide against the groove wall of the movable guide groove (9-2).

9. An evaporation crystallization treatment device for zero discharge of high-salinity wastewater according to claim 8, characterized in that: Its working principle: The distillation vessel (1) is connected to the evaporation crystallization system and started. The waste liquid is heated and evaporated in the distillation vessel (1). The stirring component power drive assembly (4) drives the stirring rod (9) to rotate. The waste liquid is stirred during the evaporation process. When crystals are generated, the crystals are broken. In the initial state, the two stirring and crushing parts (8) in each group are arranged adjacent to each other at the farthest distance and locked by the locking part (11). At this time, the first electromagnet ring (17) and the second electromagnet ring (18) in each stirring and crushing part (8) are not energized, and the electromagnet plate (19) in each locking part (11) is also not energized. The first spring (14) is in the natural state. In this state, the pin (15) extends out. The pin used to fix the stirring and crushing part (8) is inserted into the rectangular collar (20). The pin (15) that is not involved in fixing is inserted into the side wall of the rectangular stirring shaft (7) to block the pin hole and prevent waste liquid and crystals from entering. After a period of use, in the two adjacent rectangular rings (20) of the two mixing and crushing parts (8) in a set, the electromagnet ring 2 (18) on the right and the electromagnet ring 1 (17) on the left are energized and have the same pole. The electromagnet ring 1 (17) on the left and the electromagnet ring 2 (18) on the right of the two rectangular rings (20) are also energized and have the same pole. In the other two rectangular rings (20) of the two mixing and crushing parts (8) in a set, the electromagnet ring 1 (17) on the left and the electromagnet ring 2 (18) on the right are not energized. The electromagnet ring 2 (18) on the right and the electromagnet ring 1 (17) on the left of the two rectangular rings (20) are energized and have the same pole. However, the electromagnet rings 2 (18) that are magnetically attracted to each other in the two mixing and crushing parts (8) in a set are not energized. The two locking parts (11) of one of the stirring and crushing parts (8) in the group are opposite poles; at the same time, except for the two locking parts (11) in one of the stirring and crushing parts (8) in the group, the other locking parts (11) are all energized and magnetized, so that the pin (15) is magnetically attracted by the electromagnet piece (19) and detached from the rectangular collar (20). In this state, the stirring and crushing part (8) corresponding to the energized locking part (11) is attracted to the stirring and crushing part (8) corresponding to the unenergized locking part (11) under the magnetic attraction of like poles repulsion and opposite poles attraction. When the magnetic attraction is in place, all eight locking parts (11) in the group are de-energized. At this time, the pin (15) is reset and re-inserted into the rectangular collar (20) under the elastic force of the spring (14) to fix the position of the stirring and crushing part (8) at this time. When it is necessary to reset two of the stirring and crushing parts (8) in a group to their initial state, the current direction of the electromagnet ring 1 (17) and electromagnet ring 2 (18) in the stirring and crushing part (8) whose position has been moved is changed, thereby changing the polarity in the magnetic attraction state. At the same time, the locking part (11) in the other stirring and crushing part (8) whose position has not changed is not energized, and the remaining locking parts (11) are energized so that the pin (15) is disengaged from the rectangular collar (20). Then, the stirring and crushing part (8) corresponding to the energized locking part (11) in this state is displaced under the magnetic attraction of like poles repelling and opposite poles attracting. After resetting, all locking parts (11) are de-energized and demagnetized, and the pin (15) is reinserted into the rectangular collar (20) and locked. After the position is fixed, all electromagnet ring 1 (17) and electromagnet ring 2 (18) are de-energized and demagnetized, and restored to the initial state.

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