A closed high shear emulsification device for oil-based suspension concentrate preparation

Abstract

The present application relates to the field of closed high shear emulsification, and particularly relates to a closed high shear emulsification device for oil-based suspension agent preparation, comprising a reaction kettle and a high shear mechanism, the bottom of the reaction kettle is adaptively installed with the high shear mechanism. The present application is provided with a pressure change ring and a pressure change swelling mechanism, and through the cooperation between reciprocating screw rods, screw sleeves and locking moving parts, the pressure change ring moves to compress the internal volume of the kettle to generate positive pressure, the base oil is extruded into the internal material of the particles and the rubber / resin particles are compressed, then the pressure in the kettle is suddenly reduced through rapid pressure relief, the particles recover after losing extrusion, the internal pore structure of the particles is expanded to form negative pressure, the oil phase is facilitated to enter the internal particles, the penetration of the base oil into the internal particles is accelerated, and then the base oil is accelerated to penetrate into the crosslinking network of the rubber or resin particles without relying on high temperature, so that the effect of low-temperature swelling and avoiding thermal oxygen degradation of the material is achieved.

Description

Technical Field

[0001] This invention relates to the field of closed-loop high-shear emulsification technology, and more specifically to a closed-loop high-shear emulsification device for the preparation of oil-based suspensions. Background Technology

[0002] In the preparation of oil-based suspensions, the pre-swelling stage is a fundamental process that determines the subsequent pulverization efficiency and the quality of the final product. The core task of this stage is to fully penetrate the base oil into the three-dimensional cross-linked network of the rubber / resin particles, so that the particles change from a hard state with high elasticity to a soft state with good plasticity, thereby creating conditions for subsequent high-shear pulverization. Existing equipment typically uses heating combined with stirring to achieve this. However, the swelling rate is positively correlated with the process temperature. Higher temperatures can accelerate molecular thermal motion and reduce the viscosity of the oil phase, thereby shortening the penetration time. But as a polymer crosslinking material, the main chain chemical bonds of rubber / resin are prone to thermal-oxidative breakage at sustained high temperatures, leading to irreversible chemical degradation of the polymer main chain of rubber or resin due to high temperatures. Traditional equipment typically sets the temperature above 120℃ to ensure production efficiency. If the temperature is lowered to below 90℃ to reduce heat damage, the oil penetration rate decreases, resulting in excessively long production cycles per batch and significantly increased energy consumption. There is currently no solution in the technology that can effectively accelerate the oil-based swelling process of rubber / resin particles without significantly increasing the process temperature. To address the aforementioned issues, for example, CN113321847A discloses a waste rubber recycling device and method. Its top piston, through reciprocating motion, pressurizes and depressurizes the reaction chamber, enabling the rubber crosslinked network to selectively break bonds and regenerate under alternating compression and stretching. However, in this prior art, the piston serves only the chemical regeneration process of rubber, its function being to directly break chemical bonds through mechanical force to achieve regeneration.

[0003] Therefore, in the pre-swelling stage of waste rubber / waste resin oil-based suspension preparation, how to accelerate the penetration of base oil into the particle interior through mechanical means without relying on high temperature, while avoiding thermal degradation of the material, has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a closed-loop high-shear emulsification device for the preparation of oil-based suspensions. This device effectively solves the problem in existing technologies where it is difficult to actively accelerate the efficient penetration of base oil into the cross-linked network of rubber or resin particles through mechanical means during the pre-swelling stage without aggravating the thermo-oxidative degradation of the material.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a closed-loop high-shear emulsification device for the preparation of oil-based suspensions, comprising a reaction vessel and a high-shear mechanism. The bottom of the reaction vessel is adapted to be installed with the high-shear mechanism, and the shear emulsification end of the high-shear mechanism extends into the interior of the reaction vessel. A pressure-changing ring is slidably connected inside the reaction vessel. The device also includes: A pressure-swelling mechanism for accelerating permeation includes a drive source fixedly connected to the top of the reactor. A reciprocating screw is fixedly connected to the output end of the drive source. A threaded sleeve is threaded onto the surface of the reciprocating screw. A locking moving part is provided on the outside of the threaded sleeve. A pushing ring is provided at the bottom of the locking moving part, and the bottom of the pushing ring is fixedly connected to the pressure-swelling ring via a pushing rod. A reset part is provided at the top of the locking moving part, and an adjusting separation part is provided on the outside of the reset part.

[0006] Furthermore, the locking moving part includes a moving ring, and the inside of the moving ring is fixedly connected to the surface of the screw sleeve. The bottom of the moving ring is provided with a sliding groove, and there are three sets of sliding grooves. Electromagnetic locks are fixedly connected inside the three sets of sliding grooves. A moving rod is inserted into the locking end of the electromagnetic lock, and the bottom of the moving rod is fixedly connected to the top of the pushing ring. The moving rod slides within the sliding groove.

[0007] Furthermore, the reset component includes three sets of fixed columns, which are fixedly connected to the top surface inside the reactor. The bottom of the three sets of fixed columns is provided with a shrinkage groove, and an elastic reset component is fixedly connected to the bottom surface inside the shrinkage groove. The other end of the three sets of elastic reset components is fixedly connected to a slip ring, and the inner side of the slip ring is slidably connected to the surface of the moving rod.

[0008] Furthermore, the adjusting separation component includes three sets of trigger switches, and the three sets of trigger switches are fixedly connected to the bottom inside the fixed column. The top of the three sets of trigger switches is provided with sliders, and the three sets of sliders are fixedly connected to the moving ring, and the three sets of sliders are slidably connected to the inside of the fixed column.

[0009] Furthermore, a micro switch is fixedly connected to the top surface inside the reactor, and the micro switch is set on the upward reset path of the locking moving part. The micro switch is electrically connected to the drive source through a wire. The micro switch is electrically connected to a gas valve through a controller, and the gas valve is connected to the top of one side of the reactor. The gas valve is also connected to a nitrogen pipe through a pipeline.

[0010] Furthermore, a corrugated ring is fixedly connected to the top of the transformer ring, and the other end of the corrugated ring is fixedly connected to the top of the inner wall of the reactor.

[0011] Furthermore, the bottom of the push ring is provided with a connecting groove, and the opening of the connecting groove is larger than the diameter of the reciprocating lead screw.

[0012] Furthermore, a sealing box is fixedly connected inside the fixed column, and four sets of sealing boxes are provided, with the four sets of sealing boxes arranged in a ring at equal distances. A limiting block is slidably connected to the inner side of the sealing box, and the limiting block is elastically connected to the sealing box through an elastic connector. An air limiting hole is opened on the outer side of the sealing box, and an air source pipe is connected to the outer side of the air limiting hole.

[0013] Furthermore, a pressure sensor is fixedly connected to the top surface inside the shrinkage tank, and the pressure sensor is electrically connected to a pressure relief valve through a controller. The pressure relief valve is adapted to and connected to the reaction vessel, and the pressure sensor is located at the top of the moving rod. Beneficial effects

[0014] The technical solution provided by this invention has the following advantages compared with the known prior art: This invention, by incorporating components such as a pressure-changing ring and a pressure-changing swelling mechanism, utilizes the coordinated relationship between components such as a reciprocating screw, a threaded sleeve, and a locking moving part to cause the pressure-changing ring to move and compress the internal volume of the reactor, generating positive pressure. This pressure forces the base oil into the particulate material and compresses the rubber / resin particles. Subsequently, rapid pressure relief causes a sudden drop in the internal pressure of the reactor, allowing the particles to recover after being released from compression. This causes the internal pore structure of the particles to expand again, creating negative pressure, which facilitates the entry of the oil phase into the particle interior and accelerates the penetration of the base oil into the particle interior. Thus, it achieves the effect of accelerating the penetration of base oil into the cross-linked network of rubber or resin particles without relying on high temperatures, achieving low-temperature swelling and avoiding the thermo-oxidative degradation of the material. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the interior of the reactor of the present invention; Figure 3 This is a schematic diagram of the variable pressure swelling mechanism of the present invention; Figure 4 This is a schematic diagram of the locking moving part of the present invention; Figure 5 This is a schematic diagram of the reset component of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle; Figure 7 For the present invention Figure 5Enlarged view of point C in the middle; Figure 8 For the present invention Figure 2 The intention behind enlarging point A in the middle; Figure 9 This is a schematic cross-sectional view of the fixing column of the present invention; Figure 10 For the present invention Figure 9 Enlarged diagram of point D in the middle.

[0017] Reference numerals: 1. Reactor; 2. High-shear mechanism; 3. Pressure changing ring; 4. Pressure changing swelling mechanism; 41. Reciprocating screw; 42. Screw sleeve; 43. Locking moving part; 431. Moving ring; 432. Slide groove; 433. Moving rod; 434. Electromagnetic lock; 44. Pushing ring; 45. Reset part; 451. Elastic reset part; 452. Fixed column; 453. Slip ring; 46. Adjusting separation part; 461. Slider; 462. Trigger switch; 5. Micro switch; 6. Corrugated ring; 7. Connecting groove; 8. Sealing box; 9. Limiting block; 10. Gas limiting hole; 11. Pressure sensor. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to embodiments.

[0020] See attached document Figure 1-10 A closed high-shear emulsification device for the preparation of oil-based suspensions includes: a reaction vessel 1 and a high-shear mechanism 2. The reaction vessel 1 serves as a closed reaction container, providing a closed working space for each process of pre-swelling, high-shear emulsification, and vacuum degassing. It is equipped with various functional components and a control system for the preparation of waste rubber / waste resin oil-based suspensions. The bottom of the reaction vessel 1 is adapted to the high-shear mechanism 2, and the shear emulsification end of the high-shear mechanism 2 extends into the interior of the reaction vessel 1 for high-shear pulverization and emulsification of the swollen material. All of the above components are existing technologies and will not be described in detail here. A pressure-changing ring 3 is slidably connected inside the reaction vessel 1. The pressure-changing ring 3 is existing technology, and a suitable piston or sealing ring can be selected. Those skilled in the art can choose according to their needs. The pressure-changing ring 3 is located above the material reaction area and can move back and forth along the axis inside the reaction vessel 1 to generate alternating positive and negative pressure pulses by changing the volume. In the preparation process of oil-based suspension, the material is first put into the reaction vessel 1 through the corresponding feed port, and then the corresponding oil base is added. By starting the reaction vessel 1, the corresponding heating mechanism, detection mechanism and the functions and procedures required in the preparation process of each oil-based suspension are started or pre-started to ensure normal preparation. This is the existing technology and will not be described in detail here.

[0021] The system also includes a pressure-swelling mechanism 4 for driving the pressure-swelling ring 3 to reciprocate during high-shear emulsification to accelerate the penetration of base oil into the particulate material. The pressure-swelling mechanism 4 includes a drive source, which is fixedly connected to the top of the reactor 1. A reciprocating screw 41 is fixedly connected to the output end of the drive source. A threaded sleeve 42 is threaded onto the surface of the reciprocating screw 41. A locking moving part 43 is provided on the outer side of the threaded sleeve 42. The drive source is used to output rotational power, and its start and stop are controlled by a controller (not shown in the figure). The controller is existing technology and uses commercially available standard parts. Its internal control program and operating parameters can be conventionally configured according to process requirements. The specific setting method is well known to those skilled in the art and will not be described in detail. The reciprocating screw 41 rotates synchronously with the drive source and forms a helical transmission pair with the threaded sleeve 42, converting the rotational motion into linear motion to drive the locking moving part 43 to move up and down. The locking moving part 43 includes a moving ring 431, and the inside of the moving ring 431 is fixedly connected to the surface of the screw sleeve 42. The bottom of the moving ring 431 is provided with a sliding groove 432, and there are three sets of sliding grooves 432. Electromagnetic locks 434 are fixedly connected inside the three sets of sliding grooves 432. A moving rod 433 is inserted into the locking end of the electromagnetic lock 434, and the bottom of the moving rod 433 is fixedly connected to the top of the pushing ring 44. The moving rod 433 slides within the sliding groove 432. The moving ring 431 moves synchronously with the screw sleeve 42. When the electromagnetic lock 434 is activated, the locking end of the electromagnetic lock 434 is inserted into the surface of the moving rod 433, locking the moving rod 433 and the moving ring 431 together. Those skilled in the art can open grooves on the surface of the moving rod 433 according to their needs to enhance the stability of the lock. This allows the moving ring 431 to drive the moving rod 433 to move down synchronously. The moving rod 433 drives the pressure changing ring 3 to move down synchronously through the pushing ring 44 and the pushing rod, compressing the internal volume of the reactor 1 to generate positive pressure, squeezing the base oil into the particles and compressing the material to achieve pressurized permeation.

[0022] In order to achieve rapid reset of transformer ring 3 and avoid aggravating mechanical wear due to frequent start-stop of drive source, a reset member 45 is provided on the top of locking moving member 43, and an adjustment separation member 46 is provided on the outside of reset member 45. The reset component 45 includes three sets of fixing columns 452, and the fixing columns 452 are fixedly connected to the top surface inside the reactor 1. The bottom of the three sets of fixing columns 452 is provided with a shrinkage groove, and the bottom surface inside the shrinkage groove is fixedly connected to an elastic reset component 451. The other end of the three sets of elastic reset components 451 is fixedly connected to a slip ring 453, and the inner side of the slip ring 453 is slidably connected to the surface of the moving rod 433. The adjusting separator 46 includes three sets of trigger switches 462, and the three sets of trigger switches 462 are fixedly connected to the bottom inside the fixed column 452. The top of the three sets of trigger switches 462 is provided with sliders 461, and the three sets of sliders 461 are fixedly connected to the moving ring 431, and the three sets of sliders 461 are slidably connected to the inside of the fixed column 452. The movement of the moving rod 433 can drive the slip ring 453 to move. When the slip ring 453 moves down, it can drive the slider 461 to move. The downward movement of the slider 461 will trigger the corresponding trigger switch 462. By setting three sets of trigger switches, even if one set is damaged or malfunctions, the other sets can still work normally. At the same time, the controller can display the status of each set of trigger switches, which is convenient for users to observe intuitively and repair switches that have not responded in time. This is existing technology and will not be described in detail here. Three sets of trigger switches can be used by the controller to close the electromagnetic lock 434 and disengage the moving rod 433. At this time, the moving rod 433 loses its limit. The compressed elastic reset component 451 pushes the slip ring 453 to drive the moving rod 433 to move upward and reset. The moving rod 433 then drives the push ring 44 and the transformer ring 3 to spring back and reset. At this point, during the depressurization phase, the particles recover their deformation from the compressed state, causing the internal pore structure of the particles to expand again, forming a negative pressure inside the particles to facilitate the entry of the oil phase into the particles. The mechanical pulse action works in synergy with the jacket heating environment of the reactor 1 to achieve the swelling effect that traditional high temperatures can only achieve at a lower temperature than traditional equipment, effectively avoiding the problem of thermo-oxidative degradation of rubber or resin macromolecular chains; the specific temperature threshold can be set by the user according to the material conditions and processing time and other objective factors. When the slip ring 453 resets and moves, it no longer touches the trigger switch. The controller delays the start of the electromagnetic lock. After the moving rod 433 resets, the electromagnetic lock restarts and engages with the moving rod 433. The delayed start can be set by those skilled in the art through the controller. This is prior art and will not be described in detail here. The moving rod 433 and the moving ring 431 are locked together again. During the continuous rotation of the reciprocating screw 41, it automatically enters the next pressurization cycle, which can avoid wear caused by frequent start and stop of the drive source. After the screw sleeve 42 moves to the bottom of the reciprocating screw 41, under the control of the preset timing program, the controller closes the electromagnetic lock 434. Then the reciprocating screw 41 can drive the screw sleeve 42 to reset and move. The reciprocating screw 41 is prior art. It can achieve automatic reset of the screw sleeve 42 after the screw sleeve 42 moves to the preset stroke without starting the drive source to reverse.

[0023] It is worth noting that, in order to ensure the accuracy of the unlocking timing of the electromagnetic lock 434, those skilled in the art can also achieve this by adding a position sensor or by using existing methods such as conventional timing control. The specific parameters can be set according to the actual working conditions to ensure the stability of the system operation, which will not be elaborated here. It is worth noting that the elastic reset element 451 is prior art, and its selection is common knowledge. Those skilled in the art can choose it themselves, so it will not be described in detail here.

[0024] Furthermore, to prevent the moving rod 433 from exceeding its preset travel position during reset and to ensure reset stability, a sealing box 8 is fixedly connected inside the fixed column 452. Four sets of sealing boxes 8 are arranged in a ring at equal intervals. A limiting block 9 is slidably connected to the inner side of the sealing box 8, and the limiting block 9 is elastically connected to the sealing box 8 via an elastic connector. A limiting vent 10 is opened on the outer side of the sealing box 8, and an air source pipe is connected to the outer side of the limiting vent 10. The air source pipe is existing technology and can be connected to a clean external air source to replenish or discharge gas into the sealing box 8. The elastic connector is existing technology, and its selection is common knowledge; those skilled in the art can choose it themselves, so it will not be described in detail here. A sealed air chamber is formed between the sealing box 8 and the limiting block 9. When the moving rod 433 is reset by a normal pulse, the instantaneous reset movement of the moving rod 433 briefly impacts the limiting block 9. Due to the air resistance caused by the small diameter of the sealed air chamber and the limiting hole 10, the gas cannot be discharged in time. At this time, the limiting block 9 can only move slightly, and the reset stroke of the moving rod 433 is limited to the normal range. When the expansion and floating stage is entered, the material inside the vessel expands and generates a continuous thrust, which pushes the moving rod 433 to move upward continuously. The gas is gradually discharged, the limiting block 9 is completely pushed open, and the moving rod 433 enters the free floating stroke. By the difference in the gas resistance effect under short-term thrust and continuous thrust, this structure can distinguish between two working conditions: normal reset pulse and continuous expansion and floating. To ensure good sealing during reciprocating movement of the pressure transformer ring 3, a bellows ring 6 is fixedly connected to the top of the pressure transformer ring 3, and the other end of the bellows ring 6 is fixedly connected to the top of the inner wall of the reactor 1. The bellows ring 6 can expand and contract synchronously with the movement of the pressure transformer ring 3, effectively isolating the gas space between the top and bottom of the pressure transformer ring 3, thereby forming a reliable sealing barrier. This sealing structure is not only simple in components and easy to install, but also reduces the risk of leakage caused by long-term friction of traditional piston seals.

[0025] Furthermore, based on the stage changes during high-shear emulsification, under high shear and temperature increases, and as the particulate material is continuously crushed, the overall surface area of ​​the material increases, and a large amount of base oil is adsorbed on the surface of the newly formed material, resulting in a significant expansion of the total volume of the material inside the vessel. This expansion is a common change in the prior art. Under these circumstances, if the volume inside the vessel remains unchanged, the pressure will increase sharply due to the expansion. To coordinate with the expansion stage and achieve automatic shutdown of the drive source when the screw sleeve 42 moves to the highest position, a micro switch 5 is fixedly connected to the top surface inside the reactor 1. The micro switch 5 is set on the upward reset path of the locking moving part 43. The micro switch 5 is electrically connected to the drive source through a wire. The micro switch 5 is electrically connected to a gas valve through a controller. The gas valve is connected to the top of one side of the reactor 1 and is connected to a nitrogen pipe through a pipeline. The microswitch 5 is activated by the controller only when the expansion and floating stage is entered. This is existing technology and will not be described in detail here. When the moving ring 431 moves to the highest position with the screw sleeve 42, the microswitch 5 is triggered. The microswitch 5 sends an electrical signal to the controller, which then shuts off the drive source and opens the gas valve. Its inlet is connected to a nitrogen source through a pipeline. After opening, nitrogen is introduced into the top of the corrugated ring 6 in the vessel to maintain the pressure inside the vessel during the expansion and floating stage. Nitrogen is chosen because of its chemical inertness, non-participation in the reaction inside the vessel, and good pressure transmission characteristics. It is a conventional choice in the field. Since the nitrogen will be discharged into the top of the corrugated ring 6, the nitrogen can be recovered by the user according to the usage requirements to save on usage costs. This choice can be adjusted according to the usage requirements. During the floating phase, the pressure inside the tank pushes the pressure-changing ring 3 to move, which in turn pushes the moving rod 433 upward. During the upward movement of the moving rod 433, the limiting block 9 can be pushed open by a continuous thrust and slide within the fixed column 452. Since the moving rod 433 is slidably connected to the slip ring 453, the moving rod 433 will drive the slip ring 453 to move when it moves downward, but will not push the slip ring 453 to move when it moves upward, so that the floating stroke is not restrained by the elastic reset member 451; thus realizing the adaptive floating of the pressure-changing ring 3 with the pressure and maintaining constant pressure. Furthermore, the bottom of the push ring 44 is provided with a connecting groove 7, and the opening of the connecting groove 7 is larger than the diameter of the reciprocating screw 41; this is used to avoid the reciprocating screw 41 when entering the expansion and floating stage, so as to prevent the reciprocating screw 41 from mechanically interfering with the push ring 44; the push rod is used to limit the upward stroke of the transformer ring 3 during the expansion and floating period, so as to prevent it from exceeding the predetermined range and colliding with the reciprocating screw 41. A pressure sensor 11 is fixedly connected to the top surface inside the shrinkage tank, and the pressure sensor 11 is electrically connected to a pressure relief valve through a controller. The pressure relief valve is adapted and connected to the reactor 1. The pressure sensor 11 is located at the top of the moving rod 433. When entering the expansion and floating stage, the moving rod 433 will continuously move upward. When the moving rod 433 moves to the preset position, it will trigger the pressure sensor 11. At this time, it means that the pressure has reached the preset limit. Then, the pressure sensor 11 can open the pressure relief valve through the controller. The signal sent by the pressure sensor 11 to the control valve can be set by the user to set a warning state for easy reminder. This is the prior art and will not be described in detail here.

[0026] Finally, when entering the degassing stage, the conventional method for reactor 1 is to use its vacuum pump for vacuum suction. At this time, the drive source can be started to cooperate with degassing. This allows the same drive source to accelerate the penetration of base oil into the particles through mechanical means, and can also be combined with other steps to improve the actual use effect. At this time, the electromagnetic lock 434 can be activated by the controller to lock the bottom of the moving rod 433. This locking will prevent the adjustment separation part 46 from being triggered and the reset part 45 from being disturbed during its movement. This is achieved by setting a program control, which is existing technology and will not be described in detail here. Then, the controller sets a program to control the drive source to make the pressure ring 3 perform an asymmetric sawtooth wave reciprocating motion of fast upward pressure holding and slow downward. That is, the pressure ring 3 is quickly lifted to make the volume of the reactor increase sharply, and the pressure inside the reactor decreases further. This causes the micro bubbles locked by the high viscosity paste to expand violently due to the sharp increase in the internal and external pressure difference, and the interface film to stretch and thin until it ruptures. Then, the pressure ring 3 holds pressure at the highest point to provide sufficient exhaust window for the vacuum pump to remove the released gas. Finally, the pressure ring 3 slowly moves downward to reset, preventing the unruptured bubbles from being violently forced back into the liquid phase and causing secondary dissolution. At the same time, it reduces the backflow of high viscosity paste into the vacuum pipeline due to the sudden increase in pressure. The asymmetric cyclic action of fast pressure holding and slow pressure reduction mentioned above causes the bubbles in the material to repeatedly undergo alternating expansion and compression. Due to repeated alternation, the bubbles eventually rupture under stress, thus removing deep bubbles from the high-viscosity paste. At the same time, the loss of light components in the base oil is effectively suppressed due to the reduction in the total evacuation time. Furthermore, in summary, by cooperating with components such as the reciprocating screw 41 and the electromagnetic lock 434, the risk of material contamination caused by dynamic sealing problems of the cylinder or hydraulic cylinder can be avoided. It can also avoid the disadvantages of the cylinder being unable to provide assistance in the switching of multiple processes and being prone to motion interference, which requires the addition of an avoidance structure.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A closed high-shear emulsification device for preparing oil-based suspensions, comprising a reaction vessel (1) and a high-shear mechanism (2), wherein the bottom of the reaction vessel (1) is adapted to be installed with the high-shear mechanism (2), and the shear emulsification end of the high-shear mechanism (2) extends into the interior of the reaction vessel (1), and a pressure-changing ring (3) is slidably connected inside the reaction vessel (1), characterized in that: Also includes: A pressure-swelling mechanism (4) for accelerating permeation includes a drive source and is fixedly connected to the top of the reactor (1). A reciprocating screw (41) is fixedly connected to the output end of the drive source. A threaded sleeve (42) is threaded onto the surface of the reciprocating screw (41). A locking moving part (43) is provided on the outside of the threaded sleeve (42). A pushing ring (44) is provided at the bottom of the locking moving part (43). The bottom of the pushing ring (44) is fixedly connected to the pressure-swelling ring (3) through a pushing rod. A reset part (45) is provided at the top of the locking moving part (43). An adjusting separation part (46) is provided on the outside of the reset part (45).

2. The closed-loop high-shear emulsification device for preparing oil-based suspensions according to claim 1, characterized in that, The locking moving part (43) includes a moving ring (431), and the inside of the moving ring (431) is fixedly connected to the surface of the screw sleeve (42). The bottom of the moving ring (431) is provided with a sliding groove (432), and there are three sets of sliding grooves (432). Electromagnetic locks (434) are fixedly connected inside the three sets of sliding grooves (432). A moving rod (433) is inserted into the locking end of the electromagnetic lock (434), and the bottom of the moving rod (433) is fixedly connected to the top of the pushing ring (44). The moving rod (433) slides in the sliding groove (432).

3. A closed-loop high-shear emulsification device for preparing oil-based suspensions according to claim 2, characterized in that, The reset component (45) includes three sets of fixed columns (452), and the fixed columns (452) are fixedly connected to the top surface inside the reactor (1). The bottom of the three sets of fixed columns (452) is provided with a shrinkage groove, and the bottom surface inside the shrinkage groove is fixedly connected to an elastic reset component (451). The other end of the three sets of elastic reset components (451) is fixedly connected to a slip ring (453), and the inner side of the slip ring (453) is slidably connected to the surface of the moving rod (433).

4. A closed-loop high-shear emulsification device for preparing oil-based suspensions according to claim 1, characterized in that, The adjusting separator (46) includes three sets of trigger switches (462), and the three sets of trigger switches (462) are fixedly connected to the bottom inside the fixed column (452). The top of the three sets of trigger switches (462) is provided with sliders (461), and the three sets of sliders (461) are fixedly connected to the moving ring (431), and the three sets of sliders (461) are slidably connected to the inside of the fixed column (452).

5. A closed-loop high-shear emulsification device for preparing oil-based suspensions according to claim 1, characterized in that, The top surface inside the reactor (1) is fixedly connected to a micro switch (5), and the micro switch (5) is set on the upward reset path of the locking moving part (43). The micro switch (5) is electrically connected to the driving source through a wire. The micro switch (5) is electrically connected to a gas valve through a controller. The gas valve is connected to the top of one side of the reactor (1), and the gas valve is connected to a nitrogen pipe through a pipeline.

6. A closed-loop high-shear emulsification device for preparing oil-based suspensions according to claim 1, characterized in that, The top of the transformer ring (3) is fixedly connected to a corrugated ring (6), and the other end of the corrugated ring (6) is fixedly connected to the top of the inner wall of the reactor (1).

7. A closed-loop high-shear emulsification device for preparing oil-based suspensions according to claim 1, characterized in that, The bottom of the push ring (44) is provided with a connecting groove (7), and the opening of the connecting groove (7) is larger than the diameter of the reciprocating screw (41).

8. A closed-loop high-shear emulsification device for preparing oil-based suspensions according to claim 3, characterized in that, The fixed column (452) is internally fixedly connected to a sealing box (8), and there are four sets of sealing boxes (8), which are arranged in a ring at equal distances. A limiting block (9) is slidably connected to the inner side of the sealing box (8), and the limiting block (9) is elastically connected to the sealing box (8) through an elastic connector. A limiting air hole (10) is opened on the outer side of the sealing box (8), and an air source pipe is connected to the outer side of the limiting air hole (10).

9. A closed-loop high-shear emulsification device for preparing oil-based suspensions according to claim 3, characterized in that, A pressure sensor (11) is fixedly connected to the top surface inside the shrinkage tank, and the pressure sensor (11) is electrically connected to a pressure relief valve through a controller. The pressure relief valve is adapted to and connected to the reactor (1). The pressure sensor (11) is located at the top of the moving rod (433).

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