Grinding device with liquid nitrogen freezing function

Abstract

The grinding device with the liquid nitrogen freezing function comprises a bottom plate, supporting legs are fixedly installed on the top of the bottom plate, a supporting plate is fixedly installed on the tops of the supporting legs, stand columns are fixedly installed on the periphery of the top of the supporting plate, and a top plate is fixedly installed on the tops of the stand columns. A grinding mechanism is arranged at the top of the supporting plate, through the arrangement of the grinding mechanism, the grinding barrel and the grinding rod can rotate in the opposite directions at the same time in the material grinding period, impact and shearing force between media are increased through opposite rotation, and therefore the grinding efficiency and the smashing fineness are greatly improved; the movement mode can promote mixing and flowing of materials, reduce material gathering, ensure uniform stress of the materials in the grinding process and improve sample treatment uniformity, in addition, opposite rotation can also reduce heat generated by grinding, and the grinding temperature can be better controlled in cooperation with liquid nitrogen cooling.

Description

Technical Field

[0001] The utility model relates to a grinding device, in particular to a grinding device with a liquid nitrogen freezing function, belonging to the technical field of liquid nitrogen. Background Art

[0002] Liquid nitrogen is a form of nitrogen that has been liquefied at extremely low temperatures, specifically at -195.79 degrees Celsius (77 K). It is a colorless, tasteless, odorless, transparent liquid with the characteristics of extremely low temperatures and rapid evaporation. Liquid nitrogen is widely used in the fields of freezing and refrigerating food, preserving biological samples in medical treatment, cryogenic scientific experiments, and industrial cooling. Due to its extremely low temperature, liquid nitrogen requires special attention to safety when used to avoid frostbite and suffocation accidents.

[0003] During the grinding process, for heat-sensitive materials or materials that need to be kept at low temperatures to prevent chemical changes, liquid nitrogen can effectively reduce the temperature of the materials to prevent damage and oxidation caused by overheating. Authorization announcement number (CN 203061253 U) discloses a grinding device with liquid nitrogen freezing function, including a main machine, a liquid nitrogen delivery device and a liquid nitrogen storage device. The main machine is provided with a grinding chamber, and the grinding chamber is connected to the liquid nitrogen delivery device and the liquid nitrogen storage device through the liquid nitrogen delivery device;

[0004] Although the above technology can achieve rapid refrigeration of liquid nitrogen and ensure that the temperature will not rise during the grinding process, ensure the safety of the sample and that it is quickly crushed, have a long service life and high work efficiency, however, traditional grinding equipment only rotates the grinding rod in a single direction to drive the material to produce friction, thereby grinding. This unidirectional rotation may reduce the grinding efficiency because the material may form a dead angle inside the grinding container and thus not be fully ground. Secondly, if the material cannot be evenly impacted and sheared, it may lead to uneven grinding, which ultimately affects the quality of the sample. The unidirectional movement may also increase the heat generation during the grinding process, thereby reducing the effect of liquid nitrogen freezing.

[0005] Therefore, a grinding device with liquid nitrogen freezing function is proposed. Utility Model Content

[0006] In view of this, the utility model provides a grinding device with a liquid nitrogen freezing function to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0007] The technical solution of the utility model is achieved as follows: it includes a base plate, a supporting leg is fixedly installed on the top of the base plate, a supporting plate is fixedly installed on the top of the supporting leg, columns are fixedly installed on all four sides of the top of the support plate, a top plate is fixedly installed on the top of the column, a grinding mechanism is arranged on the top of the support plate, the grinding mechanism includes a cylinder, a connecting plate, a cover plate, a first motor, a grinding rod, a second motor, a transmission gear, a driven gear, a grinding barrel and grinding balls, the second motor is fixedly installed on all four sides of the bottom of the support plate, the transmission gear is fixedly installed on the output end of the second motor, the driven gear is movably connected to the top of the support plate, the surface of the transmission gear is connected to the surface of the driven gear by teeth meshing, the grinding barrel is fixedly installed on the top of the driven gear, the grinding balls are arranged on all four sides of the inner wall of the grinding barrel, and the grinding rod extends into the inner cavity of the grinding barrel.

[0008] Further preferably, the cylinder is fixedly mounted on the top of the top plate, the connecting plate is fixedly mounted on the output end of the cylinder, the cover plate is fixedly connected to the bottom of the connecting plate, the first motor is fixedly connected to the top of the cover plate, and the grinding rod is fixedly connected to the output end of the first motor.

[0009] Further preferably, a liquid nitrogen machine is fixedly installed on the top of the bottom plate, the top of the liquid nitrogen machine is connected to a bellows, and the other end of the liquid nitrogen machine passes through the top plate and extends to the bottom of the cover plate.

[0010] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0011] 1. The utility model can make the grinding barrel and the grinding rod rotate in opposite directions at the same time during material grinding through the setting of the grinding mechanism. The counter-rotation increases the impact and shear force between the media, thereby greatly improving the grinding efficiency and crushing fineness. At the same time, this movement mode can promote the mixing and flow of materials, reduce material aggregation, ensure that the materials are evenly stressed during the grinding process, and improve the uniformity of sample processing. In addition, the counter-rotation may also reduce the heat generated by grinding. Combined with liquid nitrogen cooling, the grinding temperature can be better controlled to avoid changes or losses in material properties caused by increased temperature.

[0012] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a front view of the main structure of the utility model;

[0015] Figure 2 This is a bottom view of the main structure of the utility model;

[0016] Figure 3 This is a structural diagram of the grinding barrel of the utility model;

[0017] Figure 4 This is a structural diagram of the driven gear of the utility model;

[0018] Figure 5 This is a structural diagram of the grinding rod of the utility model.

[0019] Figure numerals: 1, bottom plate; 2, supporting leg; 3, supporting plate; 4, column; 5, top plate; 6, liquid nitrogen machine; 7, bellows; 8, grinding mechanism; 801, cylinder; 802, connecting plate; 803, cover plate; 804, first motor; 805, grinding rod; 806, second motor; 807, transmission gear; 808, driven gear; 809, grinding barrel; 810, grinding ball. DETAILED DESCRIPTION

[0020] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0021] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0022] Example 1

[0023] like Figure 1-5As shown, the embodiment of the utility model provides a base plate 1, a support leg 2 is fixedly installed on the top of the base plate 1, a support plate 3 is fixedly installed on the top of the support leg 2, columns 4 are fixedly installed on the top of the support plate 3, a top plate 5 is fixedly installed on the top of the column 4, a grinding mechanism 8 is arranged on the top of the support plate 3, the grinding mechanism 8 includes a cylinder 801, a connecting plate 802, a cover plate 803, a first motor 804, a grinding rod 805, a second motor 806, a transmission gear 807, a driven gear 808, a grinding barrel 809 and a grinding ball 810, the second motor 806 is fixedly installed around the bottom of the support plate 3, the transmission gear 807 is fixedly installed on the output end of the second motor 806, the driven gear 808 is movably connected to the top of the support plate 3, and the transmission gear 807 is fixedly installed on the output end of the second motor 806. The surface of the gear 807 is connected to the surface of the driven gear 808 through tooth meshing. The grinding barrel 809 is fixedly installed on the top of the driven gear 808. The grinding balls 810 are arranged around the inner wall of the grinding barrel 809. The grinding rod 805 extends into the inner cavity of the grinding barrel 809. The cylinder 801 is fixedly installed on the top of the top plate 5. The connecting plate 802 is fixedly installed on the output end of the cylinder 801. The cover plate 803 is fixedly connected to the bottom of the connecting plate 802. The first motor 804 is fixedly connected to the top of the cover plate 803. The grinding rod 805 is fixedly connected to the output end of the first motor 804. A liquid nitrogen machine 6 is fixedly installed on the top of the bottom plate 1. The top of the liquid nitrogen machine 6 is connected to a bellows 7. The other end of the liquid nitrogen machine 6 passes through the top plate 5 and extends to the bottom of the cover plate 803.

[0024] By setting the grinding mechanism 8, during material grinding, the grinding barrel 809 and the grinding rod 805 can rotate in opposite directions at the same time. The counter-rotation increases the impact and shear force between the media, thereby greatly improving the grinding efficiency and crushing fineness. At the same time, this movement mode can promote the mixing and flow of materials, reduce material aggregation, ensure that the materials are evenly stressed during the grinding process, and improve the uniformity of sample processing. In addition, the counter-rotation may also reduce the heat generated by grinding. Combined with liquid nitrogen cooling, the grinding temperature can be better controlled to avoid changes or losses in material properties caused by increased temperature.

[0025] When the utility model is working: after placing the material into the inner cavity of the grinding barrel 809, the cylinder 801 can be started to work, and when the cylinder 801 is started, it drives the cover plate 803 at the output end to move downward and fit with the top of the grinding barrel 809 to seal, and then the first motor 804 is started to work, and when the first motor 804 is started, it can drive the grinding rod 805 at the output end to rotate, and while the grinding rod 805 is rotating, it drives the material and the grinding ball 810 to generate friction for grinding, and then the second motor 806 can be started to work, and when the second motor 806 is started, it drives the transmission gear 807 at the output end to rotate, and when the transmission gear 807 rotates, it drives the driven gear 808 to rotate through the action of tooth meshing, and the rotation of the driven gear 808 can drive the grinding barrel 809 to rotate in the opposite direction of the grinding rod 805, thereby improving the grinding efficiency.

[0026] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A grinding device with liquid nitrogen freezing function, characterized in that: The invention comprises a bottom plate (1), a support leg (2) is fixedly mounted on the top of the bottom plate (1), a support plate (3) is fixedly mounted on the top of the support leg (2), upright posts (4) are fixedly mounted on all four sides of the top of the support plate (3), a top plate (5) is fixedly mounted on the top of the upright post (4), a grinding mechanism (8) is arranged on the top of the support plate (3), and the grinding mechanism (8) comprises a cylinder (801), a connecting plate (802), a cover plate (803), a first motor (804), a grinding rod (805), a second motor (806), a transmission gear (807), a driven gear (808), a grinding barrel (809), and a plurality of gears (801, 802, 803, 804, 805, 806, 807, 808, and 809). 9) and grinding balls (810), the second motor (806) is fixedly mounted around the bottom of the support plate (3), the transmission gear (807) is fixedly mounted on the output end of the second motor (806), the driven gear (808) is movably connected to the top of the support plate (3), the surface of the transmission gear (807) and the surface of the driven gear (808) are connected by teeth meshing, the grinding barrel (809) is fixedly mounted on the top of the driven gear (808), the grinding balls (810) are arranged around the inner wall of the grinding barrel (809), and the grinding rod (805) extends into the inner cavity of the grinding barrel (809).

2. A grinding device with liquid nitrogen freezing function according to claim 1, characterized in that: The cylinder (801) is fixedly mounted on the top of the top plate (5), the connecting plate (802) is fixedly mounted on the output end of the cylinder (801), the cover plate (803) is fixedly connected to the bottom of the connecting plate (802), the first motor (804) is fixedly connected to the top of the cover plate (803), and the grinding rod (805) is fixedly connected to the output end of the first motor (804).

3. The grinding device with liquid nitrogen freezing function according to claim 1, characterized in that: A liquid nitrogen machine (6) is fixedly mounted on the top of the bottom plate (1); the top of the liquid nitrogen machine (6) is connected to a bellows (7); the other end of the liquid nitrogen machine (6) passes through the top plate (5) and extends to the bottom of the cover plate (803).

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