Low temperature pulverizing mechanism

Abstract

The utility model belongs to the technical field of rubbing crusher, specifically disclose a low temperature rubbing mechanism, wherein, this low temperature rubbing mechanism mainly includes base, case, drive mechanism and screw conveyor etc. Structure components, the case is established on the base, and the back cover of case is connected with freeze pipe, freeze pipe includes riser and freeze storehouse, the top end of riser is connected with screw conveyor, and the lateral wall of riser is communicated with exhaust pipe, and freeze storehouse is also connected with liquid nitrogen pipeline, the inside of case is provided with rubbing disc, and rubbing disc is connected drive mechanism, and drive mechanism can drive rubbing disc to rotate, the inside of case is provided with air volume adjusting plate, is used for adjusting and controlling to air volume to indirectly adjust the size of discharge capacity, the utility model discloses low temperature rubbing mechanism is handled to low temperature brittle treatment to material through injecting liquid nitrogen, and the material needing rubbing is frozen to brittle temperature below, can effectively improve the efficiency of subsequent rubbing, makes material have better rubbing effect.

Description

Technical Field

[0001] This utility model relates to the field of pulverizer technology, specifically to a low-temperature pulverizing mechanism. Background Technology

[0002] Low-temperature pulverizing mechanisms are widely used in the pharmaceutical, food, chemical, and national defense research industries for material pulverization. They are particularly useful for heat-sensitive substances, such as rubber, plastics, Chinese and Western medicines, plants and animals, and materials that are tough and cannot be pulverized at room temperature. These mechanisms can freeze the materials to be pulverized below their embrittlement point before pulverizing them.

[0003] However, most existing crushing mechanisms cannot control the material conveying speed or intervene and adjust the material output, which affects the final crushing effect and output quality.

[0004] Therefore, this utility model proposes a low-temperature pulverizing mechanism. Utility Model Content

[0005] The purpose of this invention is to provide a low-temperature pulverizing mechanism that can pulverize materials at low temperatures and simultaneously adjust the material conveying speed and output.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: A cryogenic pulverizing mechanism includes a base; The base is equipped with a housing, the front cover of the housing has a discharge port, and the rear cover of the housing is connected to a freezing pipe. The freezing tube includes a riser and a freezing chamber. The riser is a hollow pipe with openings at both ends and is vertically arranged. A screw conveyor is connected to the top of the riser, an exhaust pipe is connected to the side wall of the riser, and the bottom of the riser is connected to the freezing chamber. The outer contour of the freezing chamber is a right triangular prism. The top surface of the freezing chamber is connected to the bottom of the riser, the side wall of the freezing chamber is connected to the interior of the casing, and the freezing chamber is also connected to a liquid nitrogen pipeline. The machine housing is equipped with a crushing disc, which is connected to a drive mechanism that can drive the crushing disc to rotate. The machine housing is also equipped with an airflow regulating plate, which is located between the crushing disc and the front cover plate. The airflow regulating plate has a frustum-shaped protrusion at its center, which is arranged opposite to the discharge port.

[0007] Preferably, the drive mechanism includes a first drive motor, a drive wheel, a transmission belt, and a driven wheel; The first drive motor is mounted on the base via a motor bracket; the output shaft of the first drive motor is fixedly connected to the middle position of the drive wheel, the drive wheel is connected to the driven wheel via a transmission belt, and the driven wheel is fixedly connected to the middle position of the crushing disc via a rotating shaft.

[0008] Preferably, the pulverizing disc includes a disc body and toothed plates, the toothed plates are inserted at equal intervals around the periphery of the disc body, and the rotating shaft is fixedly connected to the middle position of the disc body.

[0009] Preferably, the inner wall of the chassis is provided with a gear ring, the gear ring including an upper gear ring, a lower gear ring and a pressure block; The outer contours of both the upper and lower gear rings are semi-circular arcs, and the ends of the upper and lower gear rings are spliced ​​together. The pressure block is located at the splice of the upper and lower gear rings. The outer contour of the pressure block is frustum-shaped, the sidewall of the pressure block is in contact with the ends of the upper and lower gear rings, and the pressure block is connected to the chassis by bolts.

[0010] Preferably, the screw conveyor includes a second drive motor, a reducer, a universal joint coupling, an auger, and a feed pipe; The second drive motor is fixed above the base by a stand, and the output shaft of the second drive motor is connected to the input end of the reducer. The output end of the reducer is connected to the end of the auger through a universal joint coupling. The feed pipe is set horizontally, and the auger is set inside the feed pipe. The bottom outlet end of the feed pipe is connected to the top end of the stand.

[0011] Preferably, a temperature sensor is provided at the discharge port of the front cover plate.

[0012] Preferably, the side wall of the chassis is provided with a connecting shaft, and the front cover is rotatably connected to the connecting shaft via a connecting block.

[0013] Preferably, the front cover of the chassis is provided with a handle.

[0014] Preferably, the outer contour of the discharge port of the chassis is frustum-shaped, and the discharge port is connected to a negative pressure pipeline.

[0015] Preferably, a protective housing is also provided, wherein the driving wheel, the transmission belt and the driven wheel are all disposed inside the protective housing.

[0016] The beneficial effects of this utility model are as follows: This utility model proposes a low-temperature pulverizing mechanism, which can perform low-temperature embrittlement treatment on materials by injecting liquid nitrogen. The materials to be pulverized are first frozen to below the embrittlement temperature and then sent into the machine for pulverization, which can effectively improve the efficiency of material pulverization and make the materials have a better pulverization effect. By setting up a screw conveyor to transport materials, the conveying speed of the materials can be controlled. At the same time, an air volume regulating plate is set inside the crushing host to adjust the air volume, thereby indirectly controlling the material output. By adding a temperature sensor, the temperature of the material can be detected to determine whether the material temperature has reached the embrittlement temperature, thereby adjusting the input of liquid nitrogen. The low temperature crushing mechanism of this utility model has a compact structure, reasonable layout, and high degree of intelligence, which meets the development requirements of modern industry. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a front view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the protective shell of this utility model; Figure 4 This is a schematic diagram of the external structure of the chassis of this utility model; Figure 5 This is a schematic diagram of the internal structure of the chassis of this utility model. Figure 1 ; Figure 6 This is a schematic diagram of the internal structure of the chassis of this utility model. Figure 2 ; Figure 7 This is a schematic diagram of the internal structure of the chassis of this utility model. Figure 3 ; Figure 8 This is a cross-sectional view of the chassis of this utility model; Figure 9 This is a schematic diagram of the structure of the freezing tube of this utility model; Figure 10 This is a schematic diagram of the structure of the pulverizing disc of this utility model; Figure 11 This is a schematic diagram of the gear ring of this utility model; Among them, 1-base; 2-Screw conveyor: 20-Upright frame, 21-Second drive motor, 22-Reducer, 23-Feed pipe, 24-Auger; 3-Freezing pipe: 301-Riser, 302-Freezing chamber, 31-Liquid nitrogen pipeline, 32-Exhaust pipe; 4-Grinding main unit: 40-Chassis, 41-Front cover, 411-Discharge port, 412-Handle, 413-Connecting block; 42-Airflow regulating plate, 421-Protrusion; 43-Grinding disc, 431-Disc body, 432-Gear plate; 44-Gear ring, 441-Upper gear ring, 442-Lower gear ring, 443-Pressure block; 5-Drive mechanism: 50-Protective housing, 51-First drive motor, 52-Drive wheel, 53-Transmission belt, 54-Driven wheel, 55-Shaft, 551-Shaft box. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Combination Figures 1 to 11 As shown, this utility model proposes a cryogenic pulverizing mechanism. This mechanism can pulverize materials at low temperatures and simultaneously intervene and control the airflow and feeding speed during the pulverizing process, ensuring thorough pulverization and a good pulverizing effect. The cryogenic pulverizing mechanism mainly includes a base 1, a screw conveyor 2, a freezing pipe 3, a pulverizing host 4, and a drive mechanism 5. The base 1, located at the bottom of the cryogenic pulverizing mechanism, provides good support and protection for the other structural components, ensuring the smooth operation of the pulverizing process.

[0021] Combination Figures 1 to 3 As shown, a housing 40 is provided on the base 1. The front cover 41 of the housing 40 has a discharge port 411. The outer contour of the discharge port 411 is frustum-shaped, and the discharge port 411 is connected to a negative pressure pipeline. The negative pressure management can provide negative pressure attraction for the main unit, so that the material can pass smoothly through the discharge port 411 after being crushed and move to the next stage equipment.

[0022] Combination Figure 1 As shown, the rear cover of the chassis 40 is connected to a freezing pipe 3. The freezing pipe 3 mainly includes a riser 301 and a freezing chamber 302. The riser 301 is a hollow pipe with openings at both ends and is vertically arranged. The top of the riser 301 is connected to a screw conveyor 2, which is used to transport materials and can adjust the material conveying speed.

[0023] Combination Figure 1 and Figure 3 As shown, the screw conveyor 2 includes structural components such as a second drive motor 21, a reducer 22, a universal joint coupling, a feed pipe 23, and an auger 24. The second drive motor 21 is fixed above the base 1 via a stand 20. The output shaft of the second drive motor 21 is connected to the input end of the reducer 22, and the output end of the reducer 22 is connected to the end of the auger 24 via a universal joint coupling. The feed pipe 23 is horizontally arranged, and the auger 24 is located inside the feed pipe 23. The bottom outlet of the feed pipe 23 is connected to the top of the riser 301. Material can enter the feed pipe 23 from the top inlet, and then the second drive motor 21 provides power to drive the auger 24 to rotate, so that the material is transported to the freezing pipe 3 for low-temperature embrittlement treatment. The screw conveyor 2 is frequency-controlled, which can adjust the conveying speed. The rotation speed of the auger 243 can be adjusted by the second drive motor 21 and the reducer 22 to control the feeding rate, thereby achieving the purpose of fully crushing the material and indirectly ensuring the quality of material crushing.

[0024] Combination Figure 2 and Figure 9 As shown, the side wall of the riser 301 is connected to the exhaust pipe 32. After the material is subjected to low-temperature embrittlement treatment by injecting liquid nitrogen, nitrogen gas will be generated. If too much gas accumulates in the casing 40, it is easy to explode. The exhaust pipe 32 can discharge the nitrogen gas, thereby ensuring the normal operation of the equipment and protecting the life, health and safety of the staff.

[0025] Combination Figure 9 As shown, the bottom end of the riser 301 is connected to the freezing chamber 302. The outer contour of the freezing chamber 302 is a right triangular prism. The top surface of the freezing chamber 302 is connected to the bottom end of the riser 301, and the right-angled sidewall of the freezing chamber 302 is connected to the interior of the casing 40. A liquid nitrogen pipeline 31 is also connected to the inclined sidewall of the freezing chamber 302. Liquid nitrogen can be injected into the freezing chamber 302 through the liquid nitrogen pipeline 31 to freeze the material to be crushed below its embrittlement point before subsequent crushing. This improves crushing efficiency while ensuring that the material achieves a better crushing effect. Low-temperature crushing can crush materials that are difficult to crush at room temperature. It can produce products with better particle flow and more uniform particle size dispersion than those crushed at room temperature. Furthermore, it avoids the deterioration caused by heat and oxidation that occurs during room temperature crushing. It also prevents overflow or dust explosions during crushing, ensuring the safety of the crushing process. Meanwhile, due to the triangular prism-shaped outline of the freezing chamber 302, the inclined surface design inside the freezing chamber 302 can slow down the time of material falling, so that the material can be fully cooled and embrittled before entering the machine box 40 for crushing, which can effectively improve the crushing effect of the material and ensure the final output quality of the material.

[0026] Combination Figure 6 and Figure 10As shown, the inside of the chassis 40 is provided with a crushing disc 43, which includes a disc body 431 and toothed plates 432. The toothed plates 432 are inserted at equal intervals around the periphery of the disc body 431, and the rotating shaft 55 is fixedly connected to the middle position of the disc body 431.

[0027] Combination Figures 1 to 3 As shown, the pulverizing disc 43 is connected to the drive mechanism 5, which drives the pulverizing disc 43 to rotate. The drive mechanism 5 includes a first drive motor 51, a drive wheel 52, a transmission belt 53, and a driven wheel 54. The first drive motor 51 is mounted on the base 1 via a motor bracket. The output shaft of the first drive motor 51 is fixedly connected to the middle position of the drive wheel 52. The drive wheel 52 is connected to the driven wheel 54 via the transmission belt 53. The driven wheel 54 is fixedly connected to the middle position of the pulverizing disc 43 via a rotating shaft 55. A shaft box 551 is provided on the base 1, and the rotating shaft 55 is disposed within the shaft box 551.

[0028] Combination Figure 6 and Figure 7 As shown, the inner wall of the chassis 40 is provided with a gear ring 44, which includes structural components such as an upper gear ring 441, a lower gear ring 442, and a pressure block 443. The outer contours of both the upper gear ring 441 and the lower gear ring 442 are semi-circular arcs, and the ends of the upper gear ring 441 and the lower gear ring 442 are joined together. The pressure block 443 is located at the joint between the upper gear ring 441 and the lower gear ring 442. The outer contour of the pressure block 443 is frustoconical, and the sidewalls of the pressure block 443 are fitted to the ends of both the upper gear ring 441 and the lower gear ring 442. The pressure block 443 is connected to the chassis 40 by bolts. Four pressure blocks are provided and arranged symmetrically. The first drive motor 51 drives the crushing disc 43 to rotate. At the same time, the inner wall of the machine is equipped with a toothed ring 44, which can realize the collision crushing of materials. In addition, the combined effect of repeated impacts, collisions, shearing and friction between the material and the crushing disc 43, the material and the toothed ring 44, and the material and the material can achieve a relatively ideal crushing effect.

[0029] Combination Figure 5As shown, an airflow regulating plate 42 is provided inside the casing 40. The airflow regulating plate 42 is located between the crushing disc 43 and the front cover plate 41, and a frustum-shaped protrusion 421 is provided at the center of the airflow regulating plate 42. The protrusion 421 is arranged opposite to the discharge port 411 of the front cover plate 41, and the size of the opening of the protrusion 421 is adapted to the opening of the discharge port 411. By rotating the nut and bolt to change the distance between the airflow regulating plate 42 and the front cover plate 41, the extension of the protrusion 421 into the discharge port is indirectly adjusted. The depth of the feed inlet 411 indirectly affects the air volume. The smaller the distance between the air volume regulating plate 42 and the front cover plate 41, the greater the depth of the protrusion 421 into the discharge port 411, the smaller the air volume and the smaller the material discharge. Conversely, the greater the distance between the air volume regulating plate 42 and the front cover plate 41, the smaller the depth of the protrusion 421 into the discharge port 411, the greater the air volume and the greater the material discharge. Ultimately, the material discharge is controlled by adjusting the distance between the air volume regulating plate 42 and the front cover plate 41.

[0030] A temperature sensor is installed at the discharge port 411 of the front cover plate 41. The temperature sensor can detect the temperature of the material to determine whether the temperature of the material has reached the embrittlement temperature, and adjust the input of liquid nitrogen accordingly.

[0031] Combination Figure 1 and Figure 2 As shown, the main unit is also equipped with a protective shell 50, in which the drive wheel 52, the transmission belt 53 and the driven wheel 54 are all located inside the protective shell 50, which can protect the relevant structural components and ensure the smooth progress of the crushing process.

[0032] Combination Figure 4 As shown, a connecting shaft is provided on the side wall of the chassis 40, and the front cover 41 is rotatably connected to the connecting shaft via a connecting block 413. Furthermore, a handle 412 is provided on the front cover 41 of the chassis 40, allowing operators to open the front cover 41 by pulling the handle 412 to inspect and replace relevant structural components inside the chassis 40.

[0033] Combination Figures 1 to 11As shown, this utility model proposes a low-temperature pulverizing mechanism. This mechanism uses liquid nitrogen to perform low-temperature embrittlement treatment on materials. The materials to be pulverized are first frozen below the embrittlement temperature before being fed into the machine casing 40 for pulverization, which effectively improves pulverization efficiency and results in better pulverization effects. A screw conveyor 2 is used to transport the materials, allowing control of the feeding speed. An airflow regulating plate 42 is installed inside the machine casing 40 of the pulverizing host 4 to adjust the airflow, indirectly controlling the material output. A temperature sensor is added to detect the material temperature, determining whether it has reached the embrittlement temperature and adjusting the liquid nitrogen input accordingly. This utility model's low-temperature pulverizing mechanism has a compact structure, reasonable layout, and high degree of intelligence, meeting the requirements of modern industrial development.

[0034] Of course, the above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model and should be protected by the present utility model.

Claims

1. A cryogenic comminution mechanism characterized by, Including the base; The base is equipped with a housing, the front cover of the housing has a discharge port, and the rear cover of the housing is connected to a freezing pipe. The freezing tube includes a riser and a freezing chamber. The riser is a hollow pipe with openings at both ends and is vertically arranged. A screw conveyor is connected to the top of the riser, an exhaust pipe is connected to the side wall of the riser, and the bottom end of the riser is connected to the freezing chamber. The outer contour of the freezing chamber is a right triangular prism. The top surface of the freezing chamber is connected to the bottom end of the riser, the side wall of the freezing chamber is connected to the interior of the casing, and the freezing chamber is also connected to a liquid nitrogen pipeline. The machine housing is equipped with a crushing disc, which is connected to a drive mechanism that can drive the crushing disc to rotate. The machine housing is also equipped with an airflow regulating plate, which is located between the crushing disc and the front cover plate. The airflow regulating plate has a frustum-shaped protrusion at its center, which is arranged opposite to the discharge port.

2. The cryogenic pulverizing mechanism according to claim 1, characterized in that, The drive mechanism includes a first drive motor, a drive wheel, a transmission belt, and a driven wheel; The first drive motor is mounted on the base via a motor bracket; The output shaft of the first drive motor is fixedly connected to the middle position of the drive wheel, the drive wheel is connected to the driven wheel through a transmission belt, and the driven wheel is fixedly connected to the middle position of the crushing disc through a rotating shaft.

3. The low-temperature pulverizing mechanism according to claim 2, characterized in that, The pulverizing disc includes a disc body and toothed plates. The toothed plates are inserted at equal intervals around the perimeter of the disc body, and the rotating shaft is fixedly connected to the center of the disc body.

4. The cryogenic pulverizing mechanism according to claim 1, characterized in that, The inner wall of the chassis is provided with a gear ring, which includes an upper gear ring, a lower gear ring, and a pressure block; The outer contours of both the upper and lower gear rings are semi-circular arcs, and the ends of the upper and lower gear rings are spliced ​​together. The pressure block is located at the splice of the upper and lower gear rings. The outer contour of the pressure block is frustum-shaped, the sidewall of the pressure block is in contact with the ends of the upper and lower gear rings, and the pressure block is connected to the chassis by bolts.

5. The cryogenic pulverizing mechanism according to claim 1, characterized in that, The screw conveyor includes a second drive motor, a reducer, a universal joint coupling, an auger, and a feed pipe; The second drive motor is fixed above the base by a stand, and the output shaft of the second drive motor is connected to the input end of the reducer. The output end of the reducer is connected to the end of the auger through a universal joint coupling. The feed pipe is horizontally arranged, the auger is located inside the feed pipe, and the bottom outlet of the feed pipe is connected to the top of the riser.

6. The cryogenic pulverizing mechanism according to claim 1, characterized in that, A temperature sensor is installed at the discharge port of the front cover plate.

7. The cryogenic pulverizing mechanism according to claim 1, characterized in that, The side wall of the chassis is provided with a connecting shaft, and the front cover is rotatably connected to the connecting shaft via a connecting block.

8. A low-temperature pulverizing mechanism according to claim 1, characterized in that, The front cover of the chassis is equipped with a handle.

9. A cryogenic pulverizing mechanism according to claim 1, characterized in that, The outer contour of the discharge port of the chassis is frustum-shaped, and the discharge port is connected to a negative pressure pipeline.

10. A low-temperature pulverizing mechanism according to claim 2, characterized in that, It is also equipped with a protective shell, wherein the driving wheel, the transmission belt and the driven wheel are all located inside the protective shell.

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