Device for producing slow-release silicon dioxide

Abstract

The invention relates to the technical field of silicon dioxide, in particular to a slow-release silicon dioxide production device which comprises a bearing cylinder, an air heater and a cyclone separator and further comprises an air pipe, a feeding assembly, a motor, an inner rod, an outer rod, a pressing disc, an adjusting assembly and a flow limiting plate. The feeding assembly is connected to the upper side of the air pipe, the motor is connected to the upper side of the feeding assembly, the inner rod is connected with the power output end of the motor, the peripheral face of the inner rod is sleeved with the outer rod, the pressing disc is connected to the peripheral face of the outer rod, the adjusting assembly is connected to the upper end of the outer rod, and the flow limiting plate array is connected into the air pipe. According to the silica gel drying device, silica gel is frozen and hardened firstly and then smashed, the pulverization degree of the silica gel during drying is effectively guaranteed, the drying airflow flow speed is changed according to the feeding amount of the silica gel when the silica gel is fed, and then the drying effect is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of silicon dioxide, in particular to a device for producing sustained-release silicon dioxide. Background Art

[0002] Silicon dioxide is an inorganic compound that is widely used in fields such as materials science, medicine, and agriculture. Sustained-release silicon dioxide is a functional material that has a sustained-release function based on the characteristics of ordinary silicon dioxide through special structural settings and surface modifications. The gel method is a method used to produce sustained-release silicon dioxide. The gel method uses a silicon compound with high chemical activity as a precursor, mixes it evenly in a liquid environment, and adds an acid catalyst to induce a hydrolysis reaction of silicate ions, so that dehydration condensation occurs between the original silicic acid to form silica gel. At this time, the silica gel is treated to give it a sustained-release function, and then after drying and sintering and curing, sustained-release silicon dioxide can be obtained. In order to improve the use effect of sustained-release silicon dioxide, it will be ground and crushed after sintering and curing. In order to reduce the time of grinding and crushing, the company will use a spray dryer to dry the silica gel. The silica gel is first atomized by the spray dryer and then dried to directly obtain silica powder.

[0003] The working principle of the spray dryer is to atomize the silicone gel and spray it into the chamber through a special nozzle. At this time, the silicone gel is in powder form. High-temperature hot air is generated in the chamber to dry the powdered silicone gel. The dried silicone gel loses its adhesive properties. At this time, calcination is carried out to obtain silica powder. However, since the undried silicone gel has adhesive properties, the volume of silicone gel sprayed by the nozzle is different, which leads to the poor quality of the final silica powder.

[0004] In view of the above problems, some solutions have been proposed in the prior art. For example, by increasing the air flow rate of the nozzle, the atomization of the silicone gel is achieved through a larger airflow. However, the viscosity of the silicone gel is not only reflected at the nozzle, but also at the feed port of the silicone gel. For example, higher viscosity will lead to a decrease in the silicone gel content at the feed port, thereby reducing the silicone gel content in the nozzle. At this time, the air flow will be directly sprayed into the chamber vertically, causing the flow of the silicone gel in the chamber to move vertically downward, and the flow speed of the silica sol is fast, which in turn leads to a short drying time of the silica sol, resulting in poor drying effect of the silica sol, resulting in poor quality of the subsequently produced silica powder.

[0005] To this end, a device for producing sustained-release silicon dioxide is proposed. Summary of the invention

[0006] The object of the present invention is to provide a device for producing slow-release silica, which solves the problem that in the slow-release silica production process, the silica is not completely powdered when it is dried due to the viscosity of the silica sol, which affects the quality of the finished product. By first freezing and hardening the silica sol and then crushing it, the degree of powderization of the silica gel when it is dried is effectively guaranteed. When the silica gel is fed, the drying air flow rate is changed according to the feeding amount of the silica gel, thereby effectively ensuring the drying effect.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A device for producing sustained-release silica comprises a carrying cylinder, a hot air blower and a cyclone separator, wherein the hot air blower is connected to the upper end of the left side of the carrying cylinder, and the cyclone separator is connected to the right side of the carrying cylinder. The device also comprises an air duct, a feeding assembly, a motor, an inner rod, an outer rod, a pressure plate, an adjusting assembly and a flow limiting plate. The air duct is connected to the upper end of the carrying cylinder and is in communication with the right side of the hot air blower, the feeding assembly is connected to the upper side of the air duct, the motor is connected to the upper side of the feeding assembly, the inner rod is connected to the power output end of the motor, the outer rod is sleeved on the circumferential surface of the inner rod, the pressure plate is connected to the circumferential surface of the outer rod, the adjusting assembly is connected to the upper end of the outer rod, the flow limiting plate array is connected in the air duct, and the flow limiting plate is located at the lower side of the adjusting assembly. When the pressure plate is pressed and moved downward, the outer rod drives the adjusting assembly to move downward and forces the flow limiting plate to move toward the inner rod, and the feeding assembly adjusts the action position of the airflow on the pressure plate according to the downward movement of the pressure plate.

[0009] Through the above scheme, the pressure plate drives the outer rod to move down a specified distance according to the weight of the pressure. When there is less silicone gel, the pressure plate moves down a short distance. When there is more silicone gel, the pressure plate moves down a long distance. The downward movement of the adjustment component can control the flow rate of the airflow according to the amount of silicone gel. When there is more silicone gel, the traction is accelerated to improve the drying efficiency. When there is less silicone gel, the traction speed is reduced to ensure the drying quality.

[0010] Preferably, the air duct includes a lower tube, an upper ring, an inner ring, a guide plate, an outer air nozzle and an inner air nozzle, the lower tube is connected to the right end of the hot air blower, the upper ring is located on the upper side of the lower tube and is connected to the hot air blower, the inner ring is connected to the inner wall of the upper ring, the bottom surface of the inner ring is higher than the bottom surface of the inner cavity of the lower tube, the guide plate array is connected to the inner cavity of the lower tube, the outer air nozzle is connected to the inner wall of the top of the supporting tube, the inner air nozzle is connected to the inner side of the bottom of the inner ring, the guide plate is arc-shaped, the extension line of the windward surface of the guide plate is tangent to the top of the inner wall of the outer air nozzle, the lower tube is spiral-shaped, and the height value of the lower tube gradually decreases along the gas flow direction.

[0011] Through the above scheme, the setting of the guide plate can guide the flow direction of the airflow, and then by making the extension line of the guide plate tangent to the external air nozzle, the airflow will flow in a spiral shape along the external air nozzle when flowing along the guide plate to the external air nozzle, and then form a spiral airflow in the inner cavity of the carrying tube, effectively extending the flow time of the airflow in the carrying tube and improving the drying effect.

[0012] Preferably, the flow limiting plate is fitted with the leeward side of the guide plate, the thickness of the flow limiting plate gradually increases from the inside to the outside, an array of slots are opened on the outer peripheral surface of the inner ring, a rubber layer is fitted on both sides of the inner wall of the slot, and the flow limiting plate is connected to the slot.

[0013] Through the above solution, the thickness of the limiting plate gradually increases from the inside to the outside, and then when the limiting plate moves inward, the distance between the inner end of the limiting plate and the inner end of the guide plate gradually decreases, thereby achieving the purpose of increasing the wind speed.

[0014] Preferably, the feed assembly includes a feed barrel, a quick-freezing box, a catering plate and a screen, the feed barrel is connected to the top of the upper ring, the quick-freezing box is connected to the top of the feed barrel, the catering plate is connected to the lower side of the inner wall of the feed barrel, the screen array is connected to the feed barrel, and the screen is trapezoidal with the smaller end of the screen facing upward.

[0015] With the above solution, the smaller end of the screen faces upward, and as the pressure plate moves downward, the area of ​​the screen on the upper side of the pressure plate will gradually increase, thereby increasing the flow rate of the airflow and facilitating the airflow to pull the silicone gel downward.

[0016] Preferably, the pressure plate includes an upper plate, a pressure bar and a lower plate, the upper plate is connected to the outer circumference of the outer rod, the pressure bar array is connected to the upper plate, and the lower plate is connected to the lower side of the upper plate, the upper plate and the lower plate are both truncated cone-shaped, and the pressure bar is arranged in an arc shape.

[0017] Through the above scheme, the pressure bar is arranged in an arc shape, and when the upper plate drives the pressure bar to rotate, the pressure bar can drive the frozen silicone gel to move downward, thereby increasing the crushing speed of the silicone gel.

[0018] Preferably, the inner wall of the catering plate is trumpet-shaped, and the distance between the inner wall of the catering plate and the inclined surface of the lower plate gradually decreases from top to bottom.

[0019] Through the above scheme, when the silicone gel feeding speed is relatively fast, the silicone gel can be crushed again between the inner wall of the catering plate and the inclined surface of the lower plate, thereby effectively ensuring the crushing effect of the silicone gel.

[0020] Preferably, the adjustment assembly includes a push spring, a baffle, a connecting frame, a connecting plate and a pressure plate, the push spring is connected to the upper side of the feed barrel, the baffle is connected to the upper side of the push spring, the baffle is connected to the top of the outer rod, the connecting frame is connected to the outer end of the baffle, the connecting plate array is connected to the lower side of the connecting frame, and the pressure plate is connected to the lower side of the connecting frame.

[0021] Through the above solution, when the pressure plate carries the silicone gel, the pressure plate will move down and contact the limiting plate.

[0022] Preferably, the inner wall of the bottom of the pressure plate is provided with an arc-shaped chamfer, and the outer side of the top of the limiting plate is provided with an inclined surface, and the arc-shaped chamfer of the pressure plate fits with the inclined surface in the initial state.

[0023] Through the above solution, the pressure plate will squeeze the flow limiting plate when it moves downward, forcing the flow limiting plate to slide, and the arc chamfer of the pressure plate fits the inclined surface, effectively reducing the friction when the pressure plate squeezes the inclined surface.

[0024] Preferably, the movable distance of the pressure plate is h, and h is greater than the height of the screen.

[0025] Through the above scheme, h is greater than the height of the screen, so that when the silicone gel is less, the screen body is located at the lower side of the pressure plate, the airflow passes through the lower side of the pressure plate, and a small part of the airflow flows downward from the upper side of the pressure plate, thereby effectively reducing the leakage speed of the cold air when the silicone gel is less.

[0026] Preferably, a rubber sleeve is attached to the surface of the flow limiting plate, the rubber sleeve is located on the upper side of the lower tube, and the outer end of the inner wall of the rubber sleeve is fixed to the outer end of the flow limiting plate.

[0027] Through the above scheme, the rubber sleeve is attached to the outer surface of the limiting plate, and when the limiting plate slides, the gap left by the limiting plate can be closed to avoid the leakage of hot air flow. At the same time, the outer end of the inner wall of the rubber sleeve is fixed to the outer end of the limiting plate, and after the limiting plate loses extrusion, the limiting plate can be driven to reset.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention solves the problem that in the production process of sustained-release silica, the silica powder is not completely powdered during drying due to the viscosity of the silica gel, which affects the quality of the finished product. By setting a pressure plate, the rotation of the pressure plate will drive the pressure bar to contact the silica gel. The pressure bar is set in an arc shape, and when the pressure bar rotates and contacts the silica gel, the silica gel is forced to move downward to the gap between the pressure plate and the feed barrel, which effectively improves the rolling speed of the silica gel. At the same time, the uniformity of the gap between the pressure plate and the feed barrel makes the silica gel powder uniform in size when entering the supporting barrel, thereby effectively ensuring the quality of the silica.

[0030] 2. By setting the feeding assembly, the position of the screen on the upper plate will be changed when the pressure plate moves. When the downward moving distance is short, the screen is at the lower side of the upper plate, thereby avoiding the airflow taking away the temperature of the silicone gel and ensuring the condensation of the silicone gel, thereby facilitating subsequent production and ensuring the quality of the finished silica product. When the downward moving distance is large, the sieve plate is at the upper side of the upper plate, thereby allowing the airflow to pass through the silicone gel, effectively increasing the downward moving speed of the silicone gel, thereby achieving the purpose of improving production efficiency.

[0031] 3. By setting a guide plate in an arc shape, the airflow flows in a spiral shape in the carrier tube, which effectively prolongs the drying time of the silica gel in the carrier tube. When the silicone gel is put onto the pressure plate, the pressure of the silicone gel will cause the pressure plate to move downward, thereby driving the pressure plate to move downward and squeeze the flow limiting plate. Since the thickness of the flow limiting plate gradually increases from the inside to the outside, the size of the gap between the flow limiting plate and the guide plate will change when the flow limiting plate moves, so that the flow velocity of the spiral airflow changes according to the amount of silicone gel put in. When the amount put in is small, the silicone gel in the carrier tube flows to the cyclone separator at a slower flow rate, and when the amount put in is large, the silicone gel in the carrier tube flows to the cyclone separator at a faster flow rate, thereby ensuring that the silicone gel powder in the carrier tube is at an appropriate concentration for drying, thereby ensuring the quality of silica. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the main body of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the position of the pressure plate of the present invention;

[0034] Figure 3 It is a structural schematic diagram of the air duct part of the present invention;

[0035] Figure 4 For the present invention Figure 3 The enlarged schematic diagram at A in the middle;

[0036] Figure 5 It is a top view schematic diagram of the guide plate part of the present invention;

[0037] Figure 6 It is a schematic structural diagram of the feeding assembly part of the present invention;

[0038] Figure 7 It is a structural schematic diagram of the regulating component part of the present invention;

[0039] Figure 8 It is a schematic structural diagram of the rubber sleeve part of the present invention.

[0040] In the figure: 1. bearing cylinder; 2. hot air blower; 3. cyclone separator; 4. air duct; 401. lower tube; 402. upper ring; 403. inner ring; 4031. notch; 404. guide plate; 405. outer air nozzle; 406. inner air nozzle; 5. feeding assembly; 501. feeding cylinder; 502. quick freezing box; 503. catering plate; 504. screen; 6. motor; 7. inner rod; 8. outer rod; 9. pressure plate; 901. upper plate; 902. pressure bar; 903. lower plate; 10. adjustment assembly; 1001. push spring; 1002. baffle; 1003. connecting frame; 1004. connecting plate; 1005. pressure plate; 11. current limiting plate; 1101. inclined surface; 12. rubber sleeve. DETAILED DESCRIPTION

[0041] The following is a clear and complete description of the technical solution of the embodiment of the present invention in conjunction with the drawings of the embodiment of the present invention, so that its working state and structural features are more detailed. Obviously, the described embodiment is only a partial embodiment of the present invention, not a complete embodiment. Based on the embodiment of the present invention, other embodiments obtained by ordinary technicians in this field without making any creativity belong to the protection scope of the present invention.

[0042] See also Figures 1 to 8 The present invention provides a device for producing sustained-release silicon dioxide, and the technical solution is as follows:

[0043] For details, please refer to Figures 1 to 8 A device for producing slow-release silica comprises a carrier tube 1, a hot air blower 2 and a cyclone separator 3, wherein the hot air blower 2 is connected to the upper end of the left side of the carrier tube 1, the hot air blower 2 is fixedly connected to the carrier tube 1, the cyclone separator 3 is connected to the right side of the carrier tube 1, the inner cavity of the carrier tube 1 is connected to the inner cavity of the cyclone separator 3 through a pipeline, and further comprises an air duct 4, a feeding assembly 5, a motor 6, an inner rod 7, an outer rod 8, a pressure plate 9, an adjustment assembly 10 and a flow limiting plate 11, the air duct 4 is connected to the upper end of the carrier tube 1 and is connected to the right side of the hot air blower 2, the air duct 4 is connected to the hot air blower 2, the feeding assembly 5 is connected to the upper side of the air duct 4 The motor 6 is connected to the upper side of the feeding assembly 5, the inner rod 7 is connected to the output end of the motor 6, the outer rod 8 is sleeved on the circumferential surface of the inner rod 7, and the inner rod 7 can drive the outer rod 8 to rotate when it rotates. The outer rod 8 can slide on the surface of the inner rod 7, the pressure plate 9 is connected to the circumferential surface of the outer rod 8, the adjusting assembly 10 is connected to the upper end of the outer rod 8, the limiting plate 11 array is connected in the air duct 4, and the limiting plate 11 is located on the lower side of the adjusting assembly 10. When the pressure plate 9 is pressed and moved downward, the outer rod 8 drives the adjusting assembly 10 to move downward and forces the limiting plate 11 to move toward the inner rod 7. The feeding assembly 5 adjusts the action position of the airflow on the pressure plate 9 according to the downward movement of the pressure plate 9.

[0044] By setting up the hot air blower 2, the high-temperature airflow formed by the hot air blower 2 passes through the air duct 4 and enters the inner cavity of the supporting tube 1. The silicone gel will fall onto the pressure plate 9 after being frozen by the feeding component 5. The frozen silicone gel is powdered by the cooperation of the pressure plate 9 and the feeding component 5. The hot air blower 2 forms a spiral airflow in the supporting tube 1 through the air duct 4, and draws the silicone gel in the feeding component 5 for release through the flow of the airflow, so as to facilitate the drying of the silicone gel powder.

[0045] As an embodiment of the present invention, refer to Figure 3 , Figure 4 and Figure 5The air duct 4 includes a lower tube 401, an upper ring 402, an inner ring 403, a guide plate 404, an outer air nozzle 405 and an inner air nozzle 406. The lower tube 401 is connected to the right end of the hot air blower 2, the right end of the hot air blower 2 is the air outlet, the opening of the lower tube 401 completely covers the air outlet of the hot air blower 2, the upper ring 402 is located on the upper side of the lower tube 401 and is connected to the hot air blower 2, the inner ring 403 is connected to the inner wall of the upper ring 402, the inner ring 403 is fixedly connected to the upper ring 402, the bottom surface of the inner ring 403 is higher than the bottom surface of the inner cavity of the lower tube 401, the guide plate 404 is connected in an array to the inner cavity of the lower tube 401, the outer air nozzle 405 is connected to the inner wall of the top of the bearing tube 1, the inner air nozzle 406 is connected to the inner side of the bottom of the inner ring 403, and the airflow is guided by the guide plate 404. On the inner ring 403, the bottom surface of the inner ring 403 is higher than the bottom surface of the lower tube 401, and then the airflow passes through the inner ring 403 and the lower tube 401 and flows to between the inner air nozzle 406 and the outer air nozzle 405. The guide plate 404 is arc-shaped, and the airflow will form an arc-shaped airflow when it is guided by the guide plate. The extension line of the windward surface of the guide plate 404 is tangent to the top of the inner wall of the outer air nozzle 405, so that the arc-shaped airflow flows downward along the inner wall of the outer air nozzle 405. When the guide plates 404 are arranged in an array, the airflow is spirally cut into between the inner air nozzle 406 and the outer air nozzle 405, and flows into the inner cavity of the carrier tube 1 through the outer air nozzle 405 and the inner air nozzle 406, forming a spiral airflow in the inner cavity of the carrier tube 1. By making the airflow move downward in a spiral, the silicone gel powder in the carrier tube is effectively improved. The time for the gas to flow in the inner cavity of the carrier tube 1 is increased, thereby achieving the purpose of improving the drying effect. When the airflow in the outer air nozzle 405 and the inner air nozzle 406 moves downward, a low-pressure area is formed at the lower ends of the outer air nozzle 405 and the inner air nozzle 406, and the high pressure in the feeding component 5 will fill the gas to the low pressure, thereby forming a downward airflow at the feeding component 5. The silicone gel in the feeding component 5 is pulled downward by the downward airflow, and the lower tube 401 is spiral, and the height of the lower tube 401 gradually decreases along the gas flow direction. The lower tube 401 gradually decreases with the wind direction, thereby converging the airflow, which is convenient for guiding the airflow to the guide plate 404, the limiting plate 11 is in contact with the leeward side of the guide plate 404, the limiting plate 11 is slidably connected to the guide plate 404, and the limiting plate 11 is slidably connected to the lower tube 401 , and the limiting plate 11 is slidably connected to the lower side of the upper ring 402, the limiting plate 11 moves toward the inner tube or away from the inner tube, the limiting plate 11 moves along the arc surface of the guide plate 404, the thickness of the limiting plate 11 gradually increases from the inside to the outside, and then when the limiting plate 11 moves toward the inner rod 7, the distance between the limiting plate 11 and the guide plate 404 decreases, and by reducing the distance, the flow velocity of the airflow can be increased, and then when the airflow flows to the lower ends of the outer nozzle 405 and the inner nozzle 406, the traction on the feed assembly 5 is increased, and the outer peripheral surface of the inner ring 403 is provided with an array of slots 4031, and the two sides of the inner wall of the slot 4031 are bonded with a rubber layer, and the limiting plate 11 is connected to the slot 4031. When the limiting plate 11 moves toward the inner tube, the rubber layer will be deformed,To ensure the accommodation of the limiting plate 11.

[0046] By providing the air duct 4, the hot air flow formed by the heat sealer flows in a spiral shape under the guidance of the air duct 4 and the guide plate 404, which effectively prolongs the flow time of the air flow in the inner cavity of the carrier tube 1, thereby achieving the purpose of ensuring the drying effect.

[0047] As an embodiment of the present invention, refer to Figure 6 The feeding assembly 5 includes a feeding barrel 501, a quick-freezing box 502, a catering plate 503 and a screen 504. The feeding barrel 501 is connected to the top of the upper ring 402, and the quick-freezing box 502 is connected to the top of the feeding barrel 501. The quick-freezing box 502 is filled with liquid nitrogen for rapid freezing of the silica gel. Since the silica gel contains water, when the silica gel is frozen, the water in the silica gel expands, which can enlarge the pores of the silica gel, thereby improving the sustained release effect of the calcined silica powder. The catering plate 503 is connected to the lower side of the inner wall of the feeding barrel 501, and the screen 504 array is connected to the feeding barrel 501. The screen 504 is trapezoidal, and the smaller end of the screen 504 faces upward. The movable distance of the pressure plate 9 is h, and h is greater than the height value of the screen 504. When the pressure plate 9 moves, the pressure plate 9 will slide over the screen 504 from top to bottom, the pressure plate 9 includes an upper plate 901, a pressure bar 902 and a lower plate 903, the upper plate 901 is connected to the outer periphery of the outer rod 8, the pressure bar 902 is connected to the upper plate 901 in an array, and the lower plate 903 is connected to the lower side of the upper plate 901, the upper plate 901 and the lower plate 903 are both truncated cone-shaped, the maximum surface diameters of the upper plate 901 and the lower plate 903 are equal and fit together, the central axis of the pressure plate 9 is on the central axis of the bearing cylinder 1, the pressure bar 902 is arranged in an arc shape, when the upper plate 901 drives the pressure bar 902 to rotate, the arc arrangement of the pressure bar 902 can force the silicone gel to move downward, thereby compressing the silicone gel to break, the inner wall of the catering plate 503 is trumpet-shaped, and the distance between the inner wall of the catering plate 503 and the inclined surface of the lower plate 903 gradually decreases from top to bottom.

[0048] By setting up the feeding component 5, the upper side of the quick freezing box 502 is connected to the barrel by laying the feeding pipe. The silicone gel enters the quick freezing box 502 in batches through the feeding pipe and is frozen after entering the quick freezing box 502. During the freezing process, the feeding is stopped. At this time, the silicone gel in the barrel will slowly gather, which is convenient for extraction. After freezing, the quick freezing box 502 is opened to put the silicone gel into the feeding barrel 501, and the motor 6 drives the pressure plate 9 to rotate to achieve the crushing of the silicone gel.

[0049] As an embodiment of the present invention, refer to Figure 7 and Figure 8, the adjusting assembly 10 includes a push spring 1001, a baffle 1002, a connecting frame 1003, a connecting plate 1004 and a pressing plate 1005, the push spring 1001 is connected to the upper side of the feed barrel 501, the baffle 1002 is connected to the upper side of the push spring 1001, the baffle 1002 is connected to the top of the outer rod 8, when the pressure plate 9 moves downward, the outer rod 8 will drive the baffle 1002 to move downward, when the pressure plate 9 is not subjected to force, the push spring 1001 remains open, the connecting frame 1003 is connected to the outer end of the baffle 1002, the connecting frame 1003 will move with the baffle 1002, the connecting plate 1004 array is connected to the lower side of the connecting frame 1003, the connecting plate 1004 moves with the connecting frame 1003, the pressing plate 1005 is connected to the lower side of the connecting frame 1003, and the pressing plate 100 5 moves along with the connecting frame 1003, the inner wall of the bottom of the pressing plate 1005 is provided with an arc chamfer, and the outer side of the top of the limiting plate 11 is provided with an inclined surface 1101. In the initial state, the arc chamfer of the pressing plate 1005 is in contact with the inclined surface 1101. When the pressing plate 1005 moves downward, the arc chamfer of the pressing plate 1005 will squeeze the inclined surface 1101 of the limiting plate 11, forcing the limiting plate 11 to move. By setting the arc chamfer on the bottom of the pressing plate 1005, the friction between the pressing plate 1005 and the limiting plate 11 is effectively reduced. The surface of the limiting plate 11 is in contact with a rubber sleeve 12, which is located on the upper side of the lower tube 401. The outer end of the inner wall of the rubber sleeve 12 is fixed to the outer end of the limiting plate 11, and the two sides of the inner wall of the rubber sleeve are in contact with the limiting plate 11.

[0050] By setting the adjustment component 10, when the pressure plate 9 is pressed and moved, the outer rod 8 will drive the pressure plate 1005 to move downward through the baffle 1002, the connecting frame 1003, and the connecting plate 1004. The downward movement of the pressure plate 1005 will squeeze the limiting plate 11, so that the limiting plate 11 moves, thereby realizing the adjustment of the position of the limiting plate 11. The movement of the limiting plate 11 will change the distance between the limiting plate 11 and the guide plate 404, thereby realizing the change of the air flow velocity, so that when there is more silicone gel, the air flow velocity is faster, and the air flow traction speed of the silicone gel in the feed barrel 501 is increased, thereby effectively improving the drying efficiency. When there is less silicone gel, the air flow velocity is slow, and the air flow traction speed of the silicone gel in the feed barrel 501 is reduced, thereby effectively reducing the flow rate of the cold air when there is less silicone gel material, thereby ensuring the powdered state of the silicone gel.

[0051] When the spray dryer dries the silica gel, due to the adhesive properties of the silica gel, the silica gel sprayed out of the spray dryer nozzle will be of different sizes, resulting in poor drying quality and affecting the calcination effect. This solution first freezes the silica gel to harden it, and then crushes the hardened silica gel by a pressing plate 9, thereby ensuring the uniformity of the size of the silica gel. At the same time, in the process of freezing the silica gel, the water in the silica gel expands due to the cold, thereby increasing the porosity of the silica gel, effectively improving the sustained release effect of the silica gel. The crushed silica gel is dried in the carrier tube 1 by the hot air blower 2 and collected in the cyclone separator 3 for separation. The specific solution is as follows;

[0052] The silicone gel is intermittently put into the quick-freezing box 502, and after being frozen in the quick-freezing box 502, it is put into the feeding tube 501 and falls on the surface of the upper plate 901. The motor 6 drives the upper plate 901 to rotate through the inner rod 7 and the outer rod 8 to crush the silicone gel. At the same time, the hot air blower 2 forms a spiral airflow to the inner cavity of the carrier tube 1 through the air duct 4. Since the feeding tube 501 is located at the center of the carrier tube 1, when the spiral airflow is formed in the inner cavity of the carrier tube 1, a low-pressure area is formed at the flow position of the airflow. At this time, the airflow in the high-pressure area of ​​the feeding tube 501 will flow to the low-pressure area, that is, forming a downward traction airflow. At this time, the airflow in the feeding tube 501 will pull the powdered silicone gel to flow into the inner cavity of the carrier tube 1, and the high-temperature airflow of the spiral flow will dry the silicone gel powder.

[0053] Due to the adhesive properties of silicone gel, when the material is fed into the quick-freezing box 502 at a certain time, the amount of silicone gel that can be extracted into the quick-freezing box 502 is different, which leads to different materials fed into the feeding barrel 501 after freezing. When the silicone gel is less, the flow rate of the traction airflow is faster, which will cause the cold air of the silicone gel to be lost quickly. If the traction speed is kept low, when the single feeding is large, the cleaning efficiency is low, and it is difficult to achieve complete processing at the next feeding. For this reason, the present scheme is provided with an adjustment component 10, and the adjustment component 10 is connected to the pressure plate 9. The flow rate of the traction airflow is adjusted by the pressure of the pressure plate 9. The specific scheme is as follows: when the silicone gel is fed onto the pressure plate 9, the pressure of the silicone gel will cause the pressure plate 9 to move downward, and the downward movement of the pressure plate 9 will drive the outer rod 8 to move downward, and the outer rod 8 drives the baffle 1002, The connecting frame 1003 and the connecting plate 1004 drive the pressure plate 1005 to move downward. At this time, the compression spring contracts, and the pressure plate 1005 moves downward and contacts the flow limiting plate 11, forcing the flow limiting plate 11 to move in the direction of the inner rod 7. Since the thickness of the flow limiting plate 11 gradually increases from the inside to the outside, when the flow limiting plate 11 moves, the gap between the flow limiting plate 11 and the guide plate 404 decreases. At this time, the flow rate of the spiral airflow increases, and then the pressure in the low-pressure area decreases. At this time, the flow rate of the traction airflow increases. When the amount of silicone gel is large, the pressure plate 9 moves downward for a long distance, and the flow rate of the traction airflow increases greatly, thereby effectively realizing the rapid traction of the silicone gel and ensuring the drying efficiency. When the amount of silicone gel added is small, the pressure plate 9 moves downward for a short distance, and the flow rate of the traction airflow increases less, thereby less traction on the silicone gel, effectively ensuring the drying effect of the silicone gel.

[0054] In order to further improve the traction effect on silicone gel for different material amounts, this scheme sets the moving distance of the pressure plate 9 to h, and makes the initial position of the pressure plate 9 on the upper side of the screen 504, and the limit position of the downward movement of the pressure plate 9 on the lower side of the screen 504. When the traction airflow is formed, the traction airflow mainly enters the feed barrel 501 from the screen 504. When the silicone gel is fed less, the main flow position of the traction airflow is on the lower side of the pressure plate 9, thereby reducing the contact between the airflow and the frozen silicone gel, effectively ensuring the temperature of the frozen silicone gel, thereby avoiding the adhesion of the silicone gel after melting, and ensuring the quality of the silicone gel after drying. When the feed is more, the pressure plate 9 moves downward, and the main flow position of the traction airflow is on the upper side of the pressure plate 9, so that the airflow will pass through the frozen silicone gel, thereby forcing the frozen silicone gel to move downward, thereby achieving the purpose of increasing the traction speed and effectively ensuring the grinding efficiency.

[0055] Although the embodiments of the present invention have been described, it will be apparent to those skilled in the art that changes and modifications may be made to the embodiments to obtain other effects with an understanding of the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for producing slow-release silica, comprising a carrier tube (1), a hot air blower (2) and a cyclone separator (3), wherein the hot air blower (2) is connected to the upper end of the left side of the carrier tube (1), and is characterized in that: The heat exchanger further comprises an air duct (4), a feed assembly (5), a motor (6), an inner rod (7), an outer rod (8), a pressure plate (9), an adjustment assembly (10) and a flow limiting plate (11); the air duct (4) is connected to the upper end of the bearing cylinder (1) and is in communication with the right side of the hot air blower (2); the feed assembly (5) is connected to the upper side of the air duct (4); the motor (6) is connected to the upper side of the feed assembly (5); the inner rod (7) is connected to the output end of the motor (6); the outer rod (8) is sleeved around the inner rod (7) and is The pressure plate (9) is connected to the circumferential surface of the outer rod (8), the regulating assembly (10) is connected to the upper end of the outer rod (8), the limiting plate (11) array is connected in the air duct (4), and the limiting plate (11) is located at the lower side of the regulating assembly (10), when the pressure plate (9) is pressed and moved downward, the outer rod (8) drives the regulating assembly (10) to move downward and forces the limiting plate (11) to move toward the inner rod (7), and the feeding assembly (5) adjusts the action position of the airflow on the pressure plate (9) according to the downward movement of the pressure plate (9).

2. The device for producing sustained-release silicon dioxide according to claim 1, characterized in that: The air duct (4) comprises a lower tube (401), an upper ring (402), an inner ring (403), a guide plate (404), an outer air nozzle (405) and an inner air nozzle (406); the lower tube (401) is connected to the right end of the hot air blower (2); the upper ring (402) is located on the upper side of the lower tube (401) and is connected to the hot air blower (2); the inner ring (403) is connected to the inner wall of the upper ring (402); the bottom surface of the inner ring (403) is higher than the bottom surface of the inner cavity of the lower tube (401); The guide plate (404) array is connected to the inner cavity of the lower tube (401), the outer air nozzle (405) is connected to the inner wall of the top of the supporting tube (1), and the inner air nozzle (406) is connected to the inner side of the bottom of the inner ring (403). The guide plate (404) is arc-shaped, and the extension line of the windward surface of the guide plate (404) is tangent to the top of the inner wall of the outer air nozzle (405). The lower tube (401) is spiral-shaped, and the height of the lower tube (401) gradually decreases along the gas flow direction.

3. A device for producing sustained-release silicon dioxide according to claim 2, characterized in that: The flow limiting plate (11) is fitted with the leeward side of the guide plate (404); the thickness of the flow limiting plate (11) gradually increases from the inside to the outside; an array of slots (4031) are provided on the outer peripheral surface of the inner ring (403); rubber layers are fitted on both sides of the inner wall of the slot (4031); and the flow limiting plate (11) is connected to the slot (4031).

4. The device for producing sustained-release silicon dioxide according to claim 2, characterized in that: The feed assembly (5) includes a feed barrel (501), a quick-freezing box (502), a catering plate (503) and a screen (504); the feed barrel (501) is connected to the top of the upper ring (402); the quick-freezing box (502) is connected to the top of the feed barrel (501); the catering plate (503) is connected to the lower side of the inner wall of the feed barrel (501); the screen (504) array is connected to the feed barrel (501); the screen (504) is trapezoidal in shape, and the smaller end of the screen (504) faces upward.

5. The device for producing sustained-release silicon dioxide according to claim 4, characterized in that: The pressure plate (9) comprises an upper plate (901), a pressure bar (902) and a lower plate (903); the upper plate (901) is connected to the outer periphery of the outer rod (8); the pressure bars (902) are connected to the upper plate (901) in an array; the lower plate (903) is connected to the lower side of the upper plate (901); the upper plate (901) and the lower plate (903) are both in the shape of a truncated cone; and the pressure bars (902) are arranged in an arc shape.

6. The device for producing sustained-release silicon dioxide according to claim 5, characterized in that: The inner wall of the engaging plate (503) is trumpet-shaped, and the distance between the inner wall of the engaging plate (503) and the inclined surface of the lower plate (903) gradually decreases from top to bottom.

7. The device for producing sustained-release silicon dioxide according to claim 6, characterized in that: The adjustment assembly (10) comprises a push spring (1001), a baffle (1002), a connecting frame (1003), a connecting plate (1004) and a pressing plate (1005), wherein the push spring (1001) is connected to the upper side of the feed barrel (501), the baffle (1002) is connected to the upper side of the push spring (1001), the baffle (1002) is connected to the top of the outer rod (8), the connecting frame (1003) is connected to the outer end of the baffle (1002), the connecting plate (1004) array is connected to the lower side of the connecting frame (1003), and the pressing plate (1005) is connected to the lower side of the connecting frame (1003).

8. The device for producing sustained-release silicon dioxide according to claim 7, characterized in that: The inner wall of the bottom of the pressing plate (1005) is provided with an arc chamfer, and the outer side of the top of the limiting plate (11) is provided with an inclined surface (1101). In the initial state, the arc chamfer of the pressing plate (1005) is in contact with the inclined surface (1101).

9. The device for producing sustained-release silicon dioxide according to claim 4, characterized in that: The movable distance of the pressure plate (9) is h, and h is greater than the height value of the screen (504).

10. The device for producing sustained-release silicon dioxide according to claim 8, characterized in that: A rubber sleeve (12) is attached to the surface of the flow limiting plate (11), the rubber sleeve (12) is located on the upper side of the lower tube (401), and the outer end of the inner wall of the rubber sleeve (12) is fixed to the outer end of the flow limiting plate (11).

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