A low temperature pulverizer

Abstract

The present invention belongs to the field of low-temperature pulverization, and specifically is a low-temperature pulverizer, comprising a drainage pipe and a pulverizing disk, wherein a pulverizing chamber is provided inside the pulverizing disk, an airflow component is arranged inside the pulverizing chamber, and the airflow component is used to generate a vortex airflow inside the pulverizing chamber, a recovery pipe is connected to the top of the pulverizing disk, an air pump is arranged on the outside of the drainage pipe, the output end of the air pump is connected to the top of the outside of the drainage pipe, the outside bottom of the drainage pipe is connected to the inside of the pulverizing disk, and a feed pipe is connected to the outside of the drainage pipe. Through this arrangement, materials are polished against each other during the grinding process, so there is no loss of the grinding parts, and at the same time, the high temperature generated when the grinding parts rotate and the high temperature generated by the high-speed collision between the materials and the metal grinding parts are directly avoided, and the continuous supply of cold air also ensures the sufficient cooling of the materials and the freezing of the materials during the grinding process.

Description

Technical Field

[0001] The invention belongs to the field of low-temperature pulverization, in particular to a low-temperature pulverizer. Background Art

[0002] Low-temperature grinding refers to the process of breaking a material cooled to its brittle point into smaller particles or powders under the action of external force. Low-temperature grinding technology can ensure that the tissue components of the crushed material, such as natural products, are not destroyed during the grinding process.

[0003] Low temperature pulverizer, the material is treated with refrigerant to reduce its temperature to below the brittle temperature, and then sent to the pulverizer at room temperature for pulverization. It is mainly used for low temperature pulverization of food materials with high fiber content.

[0004] Traditional low-temperature crushing equipment generally cools the material and then puts the material into the cooled crushing equipment for crushing. This crushing method requires the material to contact and collide with the crushing parts during the crushing process. During the collision, not only are the parts easily damaged, but the driving of the parts requires energy input, which generates heat during the input process, and the impact process also generates heat. This not only easily causes the material to be affected by high temperature during the impact process, resulting in reduced quality of the finished product after crushing, but also requires continuous cooling of the equipment to ensure a low-temperature crushing environment. The energy consumption required to maintain the low temperature is high.

[0005] To this end, the present invention provides a low-temperature pulverizer. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a low-temperature pulverizer according to the present invention comprises a drainage pipe and a crushing disc, a crushing chamber is provided inside the crushing disc, an airflow component is provided inside the crushing chamber, the airflow component is used to generate a vortex airflow inside the crushing chamber, a recovery pipe is connected to the top of the crushing disc, an air pump is provided outside the drainage pipe, the output end of the air pump is connected to the top of the outside of the drainage pipe, the outside bottom of the drainage pipe is connected to the inside of the crushing disc, and a feed pipe is connected to the outside of the drainage pipe;

[0008] Through the setting of the crushing chamber, the material that needs to be crushed at low temperature is placed in the feed pipe, and the air pump inputs high-speed airflow into the drainage pipe. The feed pipe will generate negative pressure due to the Venturi effect, thereby sucking the material into it. Finally, the airflow will carry part of the material into the crushing chamber of the crushing disk. The airflow component in the crushing chamber will spray high-speed low-temperature airflow into the crushing chamber. The low-temperature airflow flows in a ring in the crushing chamber, which will not only quickly cool the material entering it, but also because the mass of the materials is not exactly the same, materials of different masses will rub and grind against each other due to different speeds during the rotation process, thereby crushing the material into smaller materials, and the top of the crushing chamber is left with a single air outlet. The airflow will be discharged outward through the recovery pipe. Under the action of inertia, the heavier materials in the annular airflow will be maintained in the outer circle under the action of inertia, and the smaller materials to be ground will enter the recovery pipe with the airflow. At this time, the ground materials can be recovered on the outside of the recovery pipe, and the heavy materials will be gradually ground until they are discharged. Through this arrangement, the materials will grind each other during the grinding process, so there will be no loss of grinding parts. At the same time, the high temperature generated by the rotation of the grinding parts and the high temperature generated by the high-speed collision between the materials and the metal grinding parts are directly avoided. The continuous supply of cold air also ensures the sufficient cooling of the materials and the freezing of the materials during the crushing process.

[0009] Preferably, the pulverizing disk is formed by splicing two upper and lower half disks, a hollow interlayer is opened in the middle of the half disk, and a sealing ring is connected to the outer edge of the half disk. The entire pulverizing disk is composed of two half disks. The hollow interlayer of the half disk can reduce heat exchange with the outside world and reduce the impact of ambient temperature on the inside. The outer edges of the two half disks are already sealed, and the sealing ring is added to form a secondary seal to ensure the sealing of the pulverizing disk and reduce leakage problems.

[0010] Preferably, the airflow component includes a plurality of nozzles, a plurality of connecting holes are provided on the top surface of the upper half disk, the nozzles are fixedly connected to the half disk through the connecting holes, the plurality of nozzles are arranged in a circular shape and are equidistant, the outer sides of the plurality of nozzles are connected to an airflow supply component, the airflow supply component is used to supply cold air to the plurality of nozzles, the plurality of nozzles are arranged in a circular shape and are equidistant inside the pulverizing disk, and the nozzles of the nozzles are inclined to one side, so that when the plurality of nozzles spray at the same time, an annular airflow can be formed in the pulverizing chamber, and the airflow supply component can continuously supply high-pressure cold air to the nozzles, thereby ensuring uninterrupted annular low-temperature airflow in the pulverizing chamber.

[0011] Preferably, the airflow supply component includes a liquid nitrogen condensation module, the output end of the liquid nitrogen condensation module is connected to a detection tube, the end of the detection tube is connected to an annular parallel ring, the parallel ring is connected to a plurality of nozzles, the liquid nitrogen condensation module requires an external inert gas supply pipe, the external inert gas is quickly cooled down by the liquid nitrogen condensation module, the inert gas can be nitrogen, the temperature of the cooled gas is detected by the detection tube, and then it is passed to the parallel ring, the parallel ring simultaneously inputs equal pressure and equal amount of gas into the plurality of nozzles, thereby ensuring that the annular airflow formed in the crushing chamber is stable and uniform, and ensuring the subsequent material crushing effect.

[0012] Preferably, a raw material tank is provided on one side of the drainage tube, a launch box is connected to the bottom of the raw material tank, the end of the launch box is connected to the feed pipe outside the drainage tube, and a crushing assembly is provided on the inner side of the launch box, and the crushing assembly is used to crush the raw material. In order to ensure the working efficiency of the equipment, the material needs to be crushed before entering the crushing disk to ensure that the quality and volume of the material are small, so that it is more convenient to rub against each other under the action of airflow. Through the setting of the launch box, the materials are first piled up in the raw material tank, and a small amount of material is taken from the raw material tank each time by the crushing assembly, and the taken out material is crushed. After crushing, the material will enter the feed pipe of the drainage tube, and then be sucked away by negative pressure and enter the crushing disk. In this way, the problem of large materials being unable to be driven by the airflow to rotate at high speed in the crushing disk will not occur, thereby ensuring the comprehensiveness of the crushing.

[0013] Preferably, the crushing assembly includes an extrusion rod, a shearing groove is provided on the inner side of the launch box, the shearing groove is composed of a negative pressure groove and an impact groove, the extrusion rod is slidably connected in the negative pressure groove, the top of the negative pressure groove is connected to the bottom of the raw material tank, the outer side of the extrusion rod is connected to an electric cylinder, an impact core is provided in the impact groove, the end of the impact groove away from the negative pressure groove is connected to the drainage pipe, a one-way valve is connected between the negative pressure groove and the raw material tank, and a pressure valve is provided in the raw material tank. When the electric cylinder is shortened, the extrusion rod retracts and passes through the bottom of the one-way valve, as the extrusion rod continues to retract, negative pressure will be generated on the one-way valve, thereby sucking the raw materials accumulated in the upper raw material tank into the lower one. The material is put into the negative pressure groove, and then with the push of the extrusion rod, the raw material enters the impact groove. Since the impact groove is provided with an impact core, it can not only crush the material, but also because there are two upper and lower outlets of the material at this time, shear force will be generated, so that the material can be quickly broken and separated into fine particles under the action of impact and shear force, and move from the upper and lower channels, and finally gather at the end of the impact groove and enter the drainage pipe. Repeating the above operation can quickly and effectively crush a large number of materials and send them into the drainage pipe. In addition, since the shear and impact effects of the airflow are used at the same time during the crushing process, the material can be effectively crushed without generating a large impact heat.

[0014] Preferably, the impact core is made of solid metal material, the outer surface of the impact core is uneven, the impact core is aligned with the negative pressure groove, the connection between the impact groove and the drainage tube is located at the bottom of the impact groove, and the interior of the impact core is connected to the outside world by a circulation tube. The uneven setting of the outer surface of the impact core can disturb the passing airflow and break the material hitting the surface to make it more broken. The outlet of the impact groove makes the distances of the shear groove in the upper and lower directions different, so that the materials transported at the upper and lower ends will not collide, ensuring that the materials can be smoothly transported outward.

[0015] Preferably, the top of the recovery pipe is connected to a cyclone dust collector, the bottom of the cyclone dust collector is connected to a collecting tank, the top output end of the cyclone dust collector is connected to an airflow pipe, and the middle part of the airflow pipe is connected to a filter box. The airflow discharged from the crushing disk will enter the cyclone dust collector through the recovery pipe, and the cyclone dust collector will form a vortex airflow inside. The larger particles in the airflow will gradually fall into the collecting tank at the bottom, which is the finished material after low-temperature crushing, and the air will be discharged outward through the airflow pipe. The remaining fine particles in the airflow can be filtered by coordinating with the setting of the filter box, so that the airflow can be directly discharged outward.

[0016] Preferably, a transfer ring is wrapped around the outside of the raw material tank, and one side of the transfer ring is fixedly connected to the outside of the electric cylinder. Vibration will be generated during the operation of the electric cylinder, and the vibration will be transmitted to the raw material tank through the transfer ring, thereby transmitting vibration to the material in the raw material tank so that it will not be blocked, ensuring that it can be smoothly sucked into the negative pressure tank during the negative pressure absorption process.

[0017] Preferably, the top height of the recovery pipe is higher than the bottom height of the airflow pipe, and a plurality of connection modules are connected to the outer side of the half-disc. The two half-discs are fixedly connected through the connection modules. The airflow ejected from the recovery pipe will centrifugally rotate around the inner wall of the cyclone dust collector and will not be directly discharged from the airflow pipe. When the work is completed, the connection module is opened, and one of the half-discs can be opened from the bottom, which facilitates maintenance and replacement.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The low-temperature pulverizer described in the present invention, through the setting of the pulverizing chamber, puts the material that needs to be pulverized at low temperature into the feed pipe, and the air pump inputs high-speed airflow into the drainage pipe. The feed pipe will generate negative pressure due to the Venturi effect, thereby sucking the material into it, and finally the airflow will carry part of the material into the pulverizing chamber of the pulverizing disk, and the airflow component in the pulverizing chamber will spray high-speed low-temperature airflow into the pulverizing chamber. The low-temperature airflow flows in a ring in the pulverizing chamber, which will not only quickly cool the material entering therein, but also, because the mass sizes of the materials are not exactly the same, the materials of different masses will rub and grind against each other due to different speeds during the rotation process, thereby pulverizing the materials into smaller materials, and the top of the pulverizing chamber There is only one air outlet at the part, and the airflow will be discharged outward through the recovery pipe. Under the action of inertia, the heavier materials in the annular airflow will be maintained in the outer circle under the action of inertia, and the smaller materials to be ground will enter the recovery pipe with the airflow. At this time, the ground materials can be recovered on the outside of the recovery pipe, and the large mass materials will be gradually ground until they are discharged. Through this arrangement, the materials will grind each other during the grinding process, so there will be no loss of grinding parts. At the same time, the high temperature generated by the rotation of the grinding parts and the high temperature generated by the high-speed collision between the materials and the metal grinding parts are directly avoided. The continuous supply of cold air also ensures the sufficient cooling of the materials and the freezing of the materials during the crushing process.

[0020] 2. The low-temperature pulverizer described in the present invention, through the setting of a sealing disk, the entire pulverizing disk is composed of two half disks, the hollow interlayer of the half disk can reduce heat exchange with the outside world, reduce the influence of ambient temperature on the inside, and the outer edges of the two half disks are already sealed, and an external sealing ring forms a secondary seal to ensure the sealing of the pulverizing disk and reduce leakage problems. Multiple nozzles are arranged in an annular manner at equal intervals inside the pulverizing disk, and the nozzles of the nozzles are inclined to one side, so that when multiple nozzles spray at the same time, an annular airflow can be formed in the pulverizing chamber, and the airflow supply component can continuously supply high-pressure cold air to the nozzles, ensuring uninterrupted annular low-temperature airflow in the pulverizing chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 is a stereoscopic view of a pulverizing disk and a drainage tube of the present invention;

[0024] Figure 3 is a stereoscopic view of the pulverizing disk and the nozzle of the present invention;

[0025] Figure 4 is a cross-sectional view of a cyclone dust collector of the present invention;

[0026] Figure 5 It is a three-dimensional diagram of the raw material tank of the present invention;

[0027] Figure 6 is a cross-sectional view of a launch box of the present invention;

[0028] Figure 7 It is a structural diagram of the shear groove of the present invention;

[0029] In the figure: 1. Raw material tank; 2. Cyclone dust collector; 3. Collection tank; 4. Launch box; 5. Crushing disk; 6. Liquid nitrogen condensation module; 7. Air pump; 8. Drainage pipe; 9. Recovery pipe; 10. Detection tube; 11. Parallel ring; 12. Nozzle; 13. Sealing ring; 14. Half disk; 15. Crushing chamber; 16. Connecting hole; 17. Air flow pipe; 18. Filter box; 19. Extrusion rod; 20. One-way valve; 21. Transfer ring; 22. Shear groove; 23. Impact groove; 24. Negative pressure groove; 25. Impact core; 26. Electric cylinder. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figures 1 to 3 As shown, a low-temperature pulverizer according to an embodiment of the present invention comprises a drainage pipe 8 and a pulverizing disc 5, wherein a pulverizing chamber 15 is provided inside the pulverizing disc 5, wherein an airflow component is provided inside the pulverizing chamber 15, wherein the airflow component is used to generate a vortex airflow inside the pulverizing chamber 15, wherein a recovery pipe 9 is connected to the top of the pulverizing disc 5, an air pump 7 is provided outside the drainage pipe 8, wherein the output end of the air pump 7 is connected to the top of the outside of the drainage pipe 8, the bottom of the outside of the drainage pipe 8 is connected to the inside of the pulverizing disc 5, and the outside of the drainage pipe 8 is connected to a feed pipe;

[0032] When working, traditional low-temperature pulverizing equipment generally cools the material, and then puts the material into the cooled pulverizing equipment for pulverization. This pulverization method requires that the material contact and collide with the pulverized parts during the pulverization process. During the collision process, not only are the parts easily damaged, but the driving of the parts requires energy input, which generates heat during the input process, and the collision process also generates heat. This not only easily causes the material to be affected by high temperature during the collision process, resulting in reduced quality of the finished product after pulverization, but also requires continuous cooling of the equipment to ensure a low-temperature pulverization environment, and the energy consumption required to maintain the low temperature is high;

[0033] Through the setting of the crushing chamber 15, the material that needs to be crushed at low temperature is put into the feed pipe, and the high-speed airflow is input into the drainage pipe 8 by the air pump 7. The negative pressure at the feed pipe will be generated due to the Venturi effect, so that the material is sucked into it. Finally, the airflow will carry part of the material into the crushing chamber 15 of the crushing disk 5. The airflow component in the crushing chamber 15 will spray high-speed low-temperature airflow into the crushing chamber 15. The low-temperature airflow flows in a ring in the crushing chamber 15, which will not only quickly cool the material entering therein, but also because the mass of the materials is not exactly the same, the materials of different masses will rub and grind against each other due to different speeds during the rotation process, thereby crushing the materials into smaller materials, and the top of the crushing chamber 15 is left There is a single air outlet, and the airflow will be discharged outward through the recovery pipe 9. Under the action of inertia, the heavier materials in the annular airflow will be maintained in the outer circle under the action of inertia, and the smaller materials to be polished will enter the recovery pipe 9 with the airflow. At this time, the polished materials can be recovered on the outside of the recovery pipe 9, and the large mass materials will also be gradually polished until they are discharged. Through this arrangement, the materials are polished against each other during the polishing process, so there is no loss of polishing parts. At the same time, the high temperature generated by the rotation of the polishing parts and the high temperature generated by the high-speed collision between the materials and the metal polishing parts are directly avoided. The continuous supply of cold air also ensures sufficient cooling of the materials and ensures the freezing of the materials during the crushing process.

[0034] like Figures 1 to 3 As shown, the pulverizing disk 5 is composed of two upper and lower half disks 14, a hollow interlayer is opened in the middle of the half disk 14, and a sealing ring 13 is connected to the outer edge of the half disk 14. When working, the entire pulverizing disk 5 is composed of two half disks 14. The hollow interlayer of the half disk 14 can reduce heat exchange with the outside world and reduce the impact of ambient temperature on the inside. The outer edges of the two half disks 14 are already sealed, and the sealing ring 13 is added to form a secondary seal to ensure the sealing of the pulverizing disk 5 and reduce leakage problems.

[0035] like Figures 1 to 3 As shown, the airflow assembly includes a plurality of nozzles 12, and a plurality of connection holes 16 are opened on the top surface of the upper half disk 14, and the nozzles 12 are fixedly connected to the half disk 14 through the connection holes 16. The plurality of nozzles 12 are arranged in an annular manner with equal distances, and the outer sides of the plurality of nozzles 12 are connected to an airflow supply assembly, and the airflow supply assembly is used to supply cold air to the plurality of nozzles 12;

[0036] During operation, multiple nozzles 12 are arranged in a circular shape at equal intervals inside the pulverizing disk 5, and the nozzles of the nozzles 12 are inclined to one side, so that when the multiple nozzles 12 spray at the same time, an annular airflow can be formed in the pulverizing chamber 15, and the airflow supply component can continuously supply high-pressure cold air to the nozzles 12, ensuring uninterrupted annular low-temperature airflow in the pulverizing chamber 15.

[0037] like Figures 1 to 3 As shown, the air flow supply assembly includes a liquid nitrogen condensation module 6, the output end of the liquid nitrogen condensation module 6 is connected to a detection tube 10, the end of the detection tube 10 is connected to an annular parallel ring 11, and the parallel ring 11 is connected to a plurality of nozzles 12;

[0038] When working, the liquid nitrogen condensation module 6 needs to be connected to an external inert gas supply pipe, and the external inert gas is quickly cooled down by the liquid nitrogen condensation module 6. The inert gas can be nitrogen. The cooled gas is detected by the detection tube 10 for temperature detection, and then passed to the parallel ring 11. The parallel ring 11 simultaneously inputs equal pressure and equal amount of gas into multiple nozzles 12, thereby ensuring that the annular airflow formed in the crushing chamber 15 is stable and uniform, and ensuring the subsequent material crushing effect.

[0039] like Figures 1 to 7 As shown, a raw material tank 1 is provided on one side of the drainage pipe 8, a launch box 4 is connected to the bottom of the raw material tank 1, an end of the launch box 4 is connected to the feed pipe outside the drainage pipe 8, and a crushing assembly is provided inside the launch box 4, and the crushing assembly is used to crush the raw material;

[0040] During operation, in order to ensure the working efficiency of the equipment, the material needs to be crushed before entering the crushing disk 5 to ensure that the quality and volume of the material are small, so that it can be more convenient to rub against each other under the action of the airflow. Through the setting of the launch box 4, the materials are first piled up in the raw material tank 1, and a small amount of material is taken from the raw material tank 1 each time through the crushing component, and the taken out material is crushed. After crushing, the material will enter the feed pipe of the drainage pipe 8, and then be sucked away by the negative pressure and enter the crushing disk 5. In this way, there will be no problem that larger materials cannot be driven by the airflow to rotate at high speed in the crushing disk 5, thereby ensuring the comprehensiveness of the crushing.

[0041] like Figures 1 to 7 As shown, the crushing assembly includes an extrusion rod 19, a shearing groove 22 is opened on the inner side of the launch box 4, and the shearing groove 22 is composed of a negative pressure groove 24 and an impact groove 23. The extrusion rod 19 is slidably connected in the negative pressure groove 24, and the top of the negative pressure groove 24 is connected to the bottom of the raw material tank 1. The outer side of the extrusion rod 19 is connected to an electric cylinder 26, and an impact core 25 is arranged in the impact groove 23. The end of the impact groove 23 away from the negative pressure groove 24 is connected to the drainage pipe 8, and a one-way valve 20 is connected between the negative pressure groove 24 and the raw material tank 1, and a pressure valve is arranged in the raw material tank;

[0042] During operation, when the electric cylinder 26 is shortened, the extrusion rod 19 is retracted and passes through the bottom of the one-way valve 20. As the extrusion rod 19 continues to retract, negative pressure is generated on the one-way valve 20, thereby sucking the raw materials accumulated in the upper raw material tank 1 into the negative pressure groove 24 below. Then, as the extrusion rod 19 is pushed out, the raw materials enter the impact groove 23. Since the impact groove 23 is provided with an impact core 25, not only can the material be crushed, but also since the material has two upper and lower outlets at this time, shear force is generated, so that the material is quickly crushed and separated into fine particles under the action of impact and shear force, and moves from the upper and lower channels, and finally gathers at the end of the impact groove 23 and enters the drainage pipe 8. By repeating the above operation, a large number of materials can be quickly and effectively crushed and sent to the drainage pipe 8. In addition, since the shear and impact effects of the airflow are used simultaneously during the crushing process, the material can be effectively crushed without generating a large amount of impact heat.

[0043] like Figures 1 to 7 As shown, the impact core 25 is made of solid metal material, the outer surface of the impact core 25 is uneven, the impact core 25 is aligned with the negative pressure groove 24, the connection between the impact groove 23 and the drainage tube 8 is located at the bottom of the impact groove 23, and the inside of the impact core 25 is connected to the outside with a circulation pipe;

[0044] During operation, the uneven setting of the outer surface of the impact core 25 can disturb the passing airflow and break the materials impacting the surface to make them more broken. The outlet of the impact groove 23 makes the distances of the shear groove 22 in the upper and lower directions different, so that the materials transported at the upper and lower ends will not collide, ensuring that the materials can be transported out smoothly.

[0045] like Figures 1 to 7 As shown, the top of the recovery pipe 9 is connected to a cyclone dust collector 2, the bottom of the cyclone dust collector 2 is connected to a collection tank 3, the top output end of the cyclone dust collector 2 is connected to an airflow pipe 17, and the middle of the airflow pipe 17 is connected to a filter box 18;

[0046] During operation, the airflow discharged from the crushing disk 5 will enter the cyclone dust collector 2 through the recovery pipe 9. The cyclone dust collector 2 will form a vortex airflow inside. The larger particles in the airflow will gradually fall into the collection tank 3 at the bottom. This is the finished material after low-temperature crushing, and the air will be discharged outward through the airflow pipe 17. The setting of the filter box 18 can filter the remaining fine particles in the airflow, so that the airflow can be directly discharged outward.

[0047] like Figures 1 to 7 As shown, a transfer ring 21 is wound around the outer side of the raw material tank 1, and one side of the transfer ring 21 is fixedly connected to the outer side of the electric cylinder 26;

[0048] During operation, vibration will be generated during the operation of the electric cylinder 26, and the vibration will be transmitted to the raw material tank 1 through the transfer ring 21, thereby transmitting vibration to the material in the raw material tank 1 so that it will not be blocked, ensuring that it can be smoothly sucked into the negative pressure groove 24 during the negative pressure absorption process.

[0049] like Figures 1 to 7 As shown, the top height of the recovery pipe 9 is higher than the bottom height of the airflow pipe 17, and a plurality of connection modules are connected to the outer side of the half-disc 14, and the two half-discs 14 are fixedly connected by the connection modules;

[0050] During operation, the airflow ejected from the recovery pipe 9 will centrifugally rotate around the inner wall of the cyclone dust collector 2 and will not be directly discharged from the airflow pipe 17. When the work is completed, the connection module can be opened and one of the half-disks 14 can be opened from the bottom, which facilitates maintenance and replacement.

[0051] During operation, the material to be low-temperature crushed is placed in the feed pipe through the setting of the crushing chamber 15, and the high-speed airflow is input into the drainage pipe 8 by the air pump 7. The feed pipe will generate negative pressure due to the Venturi effect, thereby sucking the material into it, and finally the airflow will carry part of the material into the crushing chamber 15 of the crushing disk 5, and the airflow component in the crushing chamber 15 will spray high-speed low-temperature airflow into the crushing chamber 15. The low-temperature airflow flows in a ring in the crushing chamber 15, which will not only quickly cool the material entering therein, but also, because the mass of the materials is not exactly the same, the materials of different masses will rub and grind against each other due to different speeds during the rotation process, thereby crushing the materials into smaller materials, and the top of the crushing chamber 15 There is only one air outlet at the bottom, and the airflow will be discharged outward through the recovery pipe 9. Under the action of inertia, the heavier materials in the annular airflow will be maintained in the outer circle under the action of inertia, and the materials with smaller mass to be ground will enter the recovery pipe 9 with the airflow. At this time, the ground materials can be recovered on the outside of the recovery pipe 9, and the large mass materials will be gradually ground until they are discharged. Through this arrangement, the materials are ground against each other during the grinding process, so there is no loss of the grinding parts. At the same time, the high temperature generated when the grinding parts rotate and the high temperature generated by the high-speed collision between the materials and the metal grinding parts are directly avoided. The continuous supply of cold air also ensures the full cooling of the materials and the freezing of the materials during the crushing process.

[0052] The entire pulverizing disk 5 is composed of two half disks 14. The hollow interlayer of the half disk 14 can reduce heat exchange with the outside and reduce the influence of ambient temperature on the inside. The outer edges of the two half disks 14 are already sealed, and the sealing ring 13 is added to form a secondary seal to ensure the sealing of the pulverizing disk 5 and reduce leakage problems.

[0053] Multiple nozzles 12 are arranged in an annular manner at equal intervals inside the pulverizing disk 5, and the nozzles of the nozzles 12 are inclined to one side, so that when the multiple nozzles 12 spray at the same time, an annular airflow can be formed in the pulverizing chamber 15, and the airflow supply component can continuously supply high-pressure cold air to the nozzles 12, ensuring an uninterrupted annular low-temperature airflow in the pulverizing chamber 15;

[0054] The liquid nitrogen condensation module 6 needs to be connected to an external inert gas supply pipe, and the external inert gas is quickly cooled down by the liquid nitrogen condensation module 6. The inert gas can be nitrogen. The cooled gas is detected by the detection tube 10, and then transferred to the parallel ring 11. The parallel ring 11 simultaneously inputs equal pressure and equal amount of gas into multiple nozzles 12, thereby ensuring that the annular airflow formed in the crushing chamber 15 is stable and uniform, and ensuring the subsequent material crushing effect;

[0055] In order to ensure the working efficiency of the equipment, before the material enters the crushing disk 5, it is necessary to first crush the material to ensure that the material quality and volume are small, so that it can be more convenient to rub against each other under the action of the airflow. Through the setting of the launch box 4, the materials are first piled up in the raw material tank 1, and a small amount of material is taken from the raw material tank 1 each time through the crushing component, and the taken material is crushed. After crushing, the material will enter the feed pipe of the drainage pipe 8, and then be sucked away by the negative pressure and enter the crushing disk 5. In this way, there will be no problem that larger materials cannot be driven by the airflow to rotate at high speed in the crushing disk 5, thereby ensuring the comprehensiveness of crushing;

[0056] When the electric cylinder 26 is shortened, so that the extrusion rod 19 retracts and passes through the bottom of the one-way valve 20, as the extrusion rod 19 continues to retract, negative pressure will be generated on the one-way valve 20, so that the raw materials accumulated in the upper raw material tank 1 are sucked into the negative pressure groove 24 below, and then as the extrusion rod 19 is pushed out, the raw materials enter the impact groove 23. Since the impact groove 23 is provided with an impact core 25, it can not only crush the material, but also because the material has two upper and lower outlets at this time, a shear force will be generated, so that the material is quickly crushed and separated into fine particles under the action of impact and shear force, and moves from the upper and lower channels, and finally gathers at the end of the impact groove 23 and enters the drainage pipe 8. Repeating the above operation can quickly and effectively crush a large number of materials and send them to the drainage pipe 8. In addition, since the shear and impact effects of the airflow are used simultaneously during the crushing process, the material can be effectively crushed without generating a large impact heat.

[0057] The uneven setting of the outer surface of the impact core 25 can disturb the passing airflow and break the materials that hit the surface, making them more broken. The outlet of the impact groove 23 makes the distances of the shear groove 22 in the upper and lower directions different, so that the materials transported at the upper and lower ends will not collide, ensuring that the materials can be smoothly transported outward.

[0058] The airflow discharged from the crushing disk 5 will enter the cyclone dust collector 2 through the recovery pipe 9. The cyclone dust collector 2 will form a vortex airflow inside. The larger particles in the airflow will gradually fall into the collection tank 3 at the bottom. This is the finished material after low-temperature crushing. The air will be discharged to the outside through the airflow pipe 17. The setting of the filter box 18 can filter the remaining fine particles in the airflow, so that the airflow can be directly discharged to the outside.

[0059] During the operation of the electric cylinder 26, vibration will be generated, and the vibration will be transmitted to the raw material tank 1 through the transmission ring 21, so that the vibration is transmitted to the material in the raw material tank 1, so that it will not be blocked, ensuring that it can be smoothly sucked into the negative pressure groove 24 during the negative pressure absorption process;

[0060] The airflow ejected from the recovery pipe 9 will centrifugally rotate around the inner wall of the cyclone dust collector 2 and will not be directly discharged from the airflow pipe 17. When the work is completed, the connection module can be opened and one of the half-disks 14 can be opened from the bottom, which facilitates maintenance and replacement.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A low temperature pulverizer, characterized in that: The invention comprises a drainage pipe (8) and a pulverizing disc (5), wherein a pulverizing chamber (15) is provided inside the pulverizing disc (5), an airflow component is provided inside the pulverizing chamber (15), and the airflow component is used to generate a vortex airflow inside the pulverizing chamber (15), a recovery pipe (9) is connected to the top of the pulverizing disc (5), an air pump (7) is provided outside the drainage pipe (8), an output end of the air pump (7) is connected to the top of the outside of the drainage pipe (8), the bottom of the outside of the drainage pipe (8) is connected to the inside of the pulverizing disc (5), and a feed pipe is connected to the outside of the drainage pipe (8); The pulverizing disc (5) is formed by splicing two upper and lower half discs (14); a hollow interlayer is provided in the middle of the half disc (14); and a sealing ring (13) is connected to the outer edge of the half disc (14); The airflow assembly comprises a plurality of nozzles (12), a plurality of connection holes (16) are provided on the top surface of the upper half disk (14), the nozzles (12) are fixedly connected to the half disk (14) via the connection holes (16), the plurality of nozzles (12) are arranged in a circular shape and are equidistant from each other, the outer sides of the plurality of nozzles (12) are connected to an airflow supply assembly, and the airflow supply assembly is used to supply cold air to the plurality of nozzles (12); The airflow supply assembly comprises a liquid nitrogen condensation module (6), the output end of the liquid nitrogen condensation module (6) is connected to a detection tube (10), the end of the detection tube (10) is connected to an annular parallel ring (11), and the parallel ring (11) is connected to a plurality of nozzles (12); A raw material tank (1) is arranged on one side of the drainage pipe (8), a launch box (4) is connected to the bottom of the raw material tank (1), an end of the launch box (4) is connected to a feed pipe outside the drainage pipe (8), and a crushing assembly is arranged on the inside of the launch box (4), the crushing assembly is used to crush the raw material; The crushing assembly comprises an extrusion rod (19), a shearing groove (22) is provided on the inner side of the launch box (4), the shearing groove (22) is composed of a negative pressure groove (24) and an impact groove (23), the extrusion rod (19) is slidably connected in the negative pressure groove (24), the top of the negative pressure groove (24) is connected to the bottom of the raw material tank (1), the outer side of the extrusion rod (19) is connected to an electric cylinder (26), an impact core (25) is provided in the impact groove (23), one end of the impact groove (23) away from the negative pressure groove (24) is connected to a drainage pipe (8), a one-way valve (20) is connected between the negative pressure groove (24) and the raw material tank (1), and a pressure valve is provided in the raw material tank (1); The impact core (25) is made of solid metal material. The outer surface of the impact core (25) is arranged in an uneven shape. The impact core (25) is aligned with the negative pressure groove (24). The connection between the impact groove (23) and the drainage pipe (8) is located at the bottom of the impact groove (23). The interior of the impact core (25) is connected to the outside by a circulation pipe.

2. A low temperature pulverizer according to claim 1, characterized in that: The top of the recovery pipe (9) is connected to a cyclone dust collector (2), the bottom of the cyclone dust collector (2) is connected to a collection tank (3), the top output end of the cyclone dust collector (2) is connected to an airflow pipe (17), and the middle of the airflow pipe (17) is connected to a filter box (18).

3. A low temperature pulverizer according to claim 2, characterized in that: A transfer ring (21) is wound around the outer side of the raw material tank (1), and one side of the transfer ring (21) is fixedly connected to the outer side of the electric cylinder (26).

4. A low temperature pulverizer according to claim 3, characterized in that: The top height of the recovery pipe (9) is higher than the bottom height of the airflow pipe (17); the outer side of the half-disc (14) is connected to a plurality of connection modules; and the two half-discs (14) are fixedly connected via the connection modules.

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