A liquid nitrogen-cooled ball mill

Abstract

The utility model relates to a liquid nitrogen frozen ball mill related technical field, especially liquid nitrogen frozen ball mill, including support plate and combination mechanism, the surface one side of support plate is provided with combination mechanism. That liquid nitrogen frozen ball mill, through the setting of combination mechanism, first through the feed pipe for the iron ball and material input to the rotating jar inside, through the thread structure on the feed pipe, the sealing of rotating jar is convenient, then starts the motor, and the motor drives the rotating jar to rotate in the outer jar body, guarantees the iron ball and material's grinding, simultaneously through the thread structure on the liquid inlet pipe links up outside storage liquid nitrogen with the outer jar body, and then input liquid nitrogen in the communication groove, thereby effectively reduces the heat generated when the rotating jar grinds, finally when grinding is completed, first loosens the bolt, and the external frame and the top cap are loosened, then the top cap is opened, after that loosens the connection of motor and rotating jar and dismounts, can with the outer jar body and rotating jar together dismount down, can clean up.

Description

Technical Field

[0001] This utility model relates to the technical field of ball mills frozen in liquid nitrogen, and in particular to a ball mill frozen in liquid nitrogen. Background Technology

[0002] A liquid nitrogen cryogenic ball mill is an experimental device that combines low-temperature freezing with high-speed ball milling. By rapidly cooling the sample to an ultra-low temperature in a liquid nitrogen environment, it then performs mechanical ball milling at low temperature to prevent denaturation or volatilization of heat-sensitive substances. It is widely used for cryogenic pulverization and homogenization of samples such as biological tissues, drugs, and materials. With the continuous development of science and technology, the functional requirements for ball mills are also increasing. Therefore, a liquid nitrogen cryogenic ball mill is particularly needed.

[0003] However, most existing ball mills that use liquid nitrogen freezing either inject liquid nitrogen directly into the grinding jar or place cooled grinding balls into the material to be ground before grinding. Regardless of the method, the extremely low temperature will damage the activity of the material to be ground, thus affecting the normal progress of the grinding process and reducing grinding efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a ball mill that is frozen with liquid nitrogen, in order to solve the problem mentioned in the background art that most existing ball mills that are frozen with liquid nitrogen directly inject liquid nitrogen into the grinding tank or put cooled grinding balls into the material to be ground before grinding. In either case, the extremely low temperature will damage the activity of the material to be ground, thereby affecting the normal progress of the grinding work and reducing the grinding efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a ball mill frozen by liquid nitrogen, comprising a support plate and a combination mechanism, wherein the combination mechanism is provided on one side of the surface of the support plate;

[0006] The combined mechanism includes an external frame, an outer tank, a threaded groove, a top cover, a rotating tank, a connecting groove, bolts, a feed pipe, a motor, a liquid inlet pipe, and a rotating groove. The external frame is fixedly connected to both sides of the support plate, and the outer tank is supported and connected to the surface of the support plate. A threaded groove is opened on one side of the external frame, and a top cover is rotatably connected to one side of the external frame. The rotating tank is fitted into both ends of the outer tank, and a connecting groove is opened in the central area of ​​the outer tank and the rotating tank. Bolts are threadedly connected to the extended end of the top cover. Feed pipes are connected to both ends of the rotating tank, and one side of the rotating tank is connected to the output end of the motor. Liquid inlet pipes are connected to both ends of the connecting groove, and the output end of the motor is fitted into the rotating groove.

[0007] Preferably, the two ends of the rotating tank are fitted into the rotating groove, and the two ends of the rotating groove are respectively provided on the outer frame and the top cover.

[0008] Preferably, the rotating tank and the rotating groove form a mutually rotating structure, and the rotating tank and the outer tank body form a mutually rotating structure.

[0009] Preferably, one end of the bolt is threaded into a threaded groove, and the top cover is fixed to the external frame by bolts.

[0010] Preferably, there are two sets of feed pipes, which are symmetrically distributed along the rotating tank.

[0011] Preferably, the liquid inlet pipe is also provided in two sets, which are located inside the feed pipe and are symmetrically distributed along the outer tank.

[0012] Preferably, the main body of the motor is mounted on an external frame, and the top cover and the external frame are arranged to rotate relative to each other.

[0013] Preferably, the top edges of both the feed pipe and the liquid inlet pipe are provided with threaded structures.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the ball mill with liquid nitrogen freezing, through the arrangement of the combined mechanism, the combination mechanism forms a liquid nitrogen flow channel on the outer surface of the rotating tank through the cooperation of the outer tank, the connecting groove and the liquid inlet pipe, which effectively cools and reduces the temperature of the rotating tank during rotation grinding. While achieving the intended purpose, it avoids the situation where liquid nitrogen comes into direct contact with the material and damages the material, thereby improving grinding efficiency. Attached Figure Description

[0015] Figure 1 This is a side view of the appearance structure of this utility model;

[0016] Figure 2 This is a cross-sectional side view of some parts of the combined mechanism of this utility model;

[0017] Figure 3 This is a cross-sectional exploded side view of some parts of the combined mechanism of this utility model;

[0018] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 5 This utility model Figure 3 Enlarged structural diagram at point B.

[0020] In the diagram: 1. Support plate; 2. Assembly mechanism; 201. External frame; 202. Outer tank; 203. Threaded groove; 204. Top cover; 205. Rotating tank; 206. Connecting groove; 207. Bolt; 208. Feed pipe; 209. Motor; 210. Liquid inlet pipe; 211. Rotating groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 The present invention provides a technical solution: a ball mill frozen by liquid nitrogen, comprising a support plate 1 and a combination mechanism 2, wherein the combination mechanism 2 is provided on one side of the surface of the support plate 1;

[0023] The combined mechanism 2 includes an outer frame 201, an outer tank 202, a threaded groove 203, a top cover 204, a rotating tank 205, a connecting groove 206, bolts 207, a feed pipe 208, a motor 209, a liquid inlet pipe 210, and a rotating groove 211. The outer frame 201 is fixedly connected to both sides of the support plate 1, and the outer tank 202 is supported and connected to the surface of the support plate 1. A threaded groove 203 is opened on one side of the outer frame 201, and the top cover 204 is rotatably connected to one side of the outer frame 201. The rotating tanks 205 are fitted into both ends of the outer tank 202. 05. A connecting groove 206 is provided in the central area of ​​the outer tank 202 and the rotating tank 205. Bolts 207 are threadedly connected to the extension end of the top cover 204. Feed pipes 208 are connected to both ends of the rotating tank 205. One side of the rotating tank 205 is connected to the output end of the motor 209. Liquid inlet pipes 210 are connected to both ends of the connecting groove 206. The output end of the motor 209 is fitted into the rotating groove 211. The connection is achieved through the outer frame 201, outer tank 202, threaded groove 203, top cover 204, rotating tank 205, and connecting groove 206. The arrangement of the groove 206, bolt 207, feed pipe 208, motor 209, liquid inlet pipe 210, and rotating groove 211, in use, with the support plate 1 serving as the basic support platform, firstly, the feed pipe 208 is used to input iron balls and materials into the rotating tank 205. After the materials are added, the threaded structure on the feed pipe 208 facilitates the sealing of the rotating tank 205. Then, the motor 209 is started, and the motor 209 drives the rotating tank 205 to rotate inside the outer tank 202 through the output shaft, thereby ensuring the iron balls and materials... During normal grinding, the externally stored liquid nitrogen is connected to the outer tank 202 through the threaded structure on the liquid inlet pipe 210, and then the liquid nitrogen is input into the connecting groove 206, thereby effectively reducing the heat generated by the rotating tank 205 during grinding. Finally, after grinding is completed, first loosen the bolts 207 to loosen the outer frame 201 and the top cover 204, then open the top cover 204, and then loosen and disassemble the connection between the motor 209 and the rotating tank 205, so that the outer tank 202 and the rotating tank 205 can be disassembled together for cleaning.

[0024] Furthermore, the two ends of the rotating tank 205 are fitted into the rotating groove 211. The two ends of the rotating groove 211 are respectively provided on the outer frame 201 and the top cover 204. Through the setting of the rotating groove 211, the rotating groove 211 is set on the outer frame 201 and the top cover 204, and its two ends are respectively fitted into the two ends of the rotating tank 205, and cooperate with the output end of the motor 209 to form a stable rotation guide structure, ensuring that the rotating tank 205 rotates smoothly in the outer tank body 202, while limiting its axial and radial offset, and improving the reliability and accuracy of the overall operation.

[0025] Furthermore, the rotating tank 205 forms a mutually rotating structure with the rotating groove 211 via the motor 209, and the rotating tank 205 forms a mutually rotating structure with the outer tank body 202 via the motor 209. With the setting of the rotating tank 205, the rotating tank 205 is fitted into the outer tank body 202 and supported by the rotating groove 211. One side of it is connected to the motor 209, so that it can rotate in the outer tank body 202 after power input, playing a core role in material grinding, full mixing or reaction, and is the main working part of the mechanism.

[0026] Furthermore, one end of bolt 207 is threaded into threaded groove 203. Top cover 204 is fixed to outer frame 201 by bolt 207. Through the setting of bolt 207, bolt 207 is threaded into threaded groove 203 on outer frame 201 to fix top cover 204, so that top cover 204 is firmly installed on outer frame 201, preventing loosening or falling off during operation, ensuring safe operation of rotating tank 205. Bolt 207 is also easy to disassemble and maintain, improving the stability and operability of combined mechanism 2, and is an important fastener for connecting and fixing top cover 204.

[0027] Furthermore, two sets of feed pipes 208 are provided, which are symmetrically distributed along the rotating tank 205. The feed pipes 208 are located at both ends of the rotating tank 205 and are symmetrically distributed. They are used to convey materials into the rotating tank 205 and serve as the channel for materials to enter the mixing system. Their structure facilitates connection with external feeding devices. The top end is provided with a threaded structure to ensure a sealed and secure connection, ensuring continuous and uniform material input and providing a stable source of raw materials for subsequent mixing or reaction.

[0028] Furthermore, two sets of inlet pipes 210 are also provided. The inlet pipes 210 are located inside the feed pipe 208 and are symmetrically distributed along the outer tank 202. Through the arrangement of the inlet pipes 210, the inlet pipes 210 are located on both sides of the connecting groove 206, inside the feed pipe 208, and symmetrically distributed along the outer tank 202. They are used to uniformly introduce liquid nitrogen into the connecting groove 206 to ensure the normal operation of the cooling work. At the same time, the top of the pipe has a threaded structure, which facilitates the sealed connection with the external liquid supply system to ensure the continuity and stability of liquid nitrogen input. It is a key channel for realizing the participation of the liquid phase in the processing process.

[0029] Furthermore, the main body of the motor 209 is mounted on the outer frame 201, and the top cover 204 and the outer frame 201 form a mutually rotating structure. Through the arrangement of the top cover 204 and the motor 209, the motor 209 is mounted on the outer frame 201, and its output end is fitted into the rotating groove 211 and connected to the rotating tank 205, providing stable power to the rotating tank 205 to realize the grinding of materials in the tank. It is the driving core of the mechanism. At the same time, the top cover 204 is rotatably connected to the outer frame 201 and fixed to the threaded groove 203 by bolts 207, which is used to seal the top of the device, facilitate maintenance and sealing, and ensure the safe and reliable operation of the device.

[0030] Furthermore, both the feed pipe 208 and the liquid inlet pipe 210 have threaded structures at their top edges. These threaded structures allow for threaded connections with external materials or liquid supply devices, ensuring a tight seal at the interface and preventing material or liquid leakage. Simultaneously, this threaded structure facilitates quick disassembly and replacement of the pipes, improving equipment maintenance efficiency and ease of use. It is a crucial connection method for ensuring the safe and stable operation of the system.

[0031] Working principle: During use, the support plate 1 serves as the basic support platform. First, the iron balls and materials are fed into the rotating tank 205 through the feed pipe 208. After the materials are added, the threaded structure on the feed pipe 208 facilitates the sealing of the rotating tank 205. Then, the motor 209 is started, and the motor 209 drives the rotating tank 205 to rotate inside the outer tank 202 through the output shaft, thereby ensuring the normal grinding of the iron balls and materials. At the same time, the threaded structure on the liquid inlet pipe 210 connects the externally stored liquid nitrogen to the outer tank 202, thereby inputting liquid nitrogen into the connecting groove 206, which effectively reduces the heat generated by the rotating tank 205 during grinding. Finally, after grinding is completed, the bolts 207 are first loosened to loosen the outer frame 201 and the top cover 204, and then the top cover 204 is opened. After that, the connection between the motor 209 and the rotating tank 205 is loosened and disassembled, and the outer tank 202 and the rotating tank 205 can be disassembled together for cleaning.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A liquid nitrogen cooled ball mill comprising a support plate (1) and a combination mechanism (2), characterized in that: A combination mechanism (2) is provided on one side of the surface of the support plate (1); The combined mechanism (2) includes an outer frame (201), an outer tank (202), a threaded groove (203), a top cover (204), a rotating tank (205), a connecting groove (206), bolts (207), a feed pipe (208), a motor (209), a liquid inlet pipe (210), and a rotating groove (211). The outer frame (201) is fixedly connected to both sides of the support plate (1), and the outer tank (202) is supported and connected to the surface of the support plate (1). A threaded groove (203) is opened on one side of the outer frame (201), and a top cover is rotatably connected to one side of the outer frame (201). (204), the outer tank (202) has a rotating tank (205) fitted at both ends, and a connecting groove (206) is provided in the central area of ​​the outer tank (202) and the rotating tank (205). The extension end of the top cover (204) is threaded with a bolt (207). The two ends of the rotating tank (205) are connected to the feed pipe (208). One side of the rotating tank (205) is connected to the output end of the motor (209). The two ends of the connecting groove (206) are connected to the liquid inlet pipe (210). The output end of the motor (209) is fitted in the rotating groove (211).

2. A liquid nitrogen cooled ball mill according to claim 1, wherein: The two ends of the rotating tank (205) are fitted into the rotating groove (211), and the two ends of the rotating groove (211) are respectively opened on the outer frame (201) and the top cover (204).

3. A liquid nitrogen cooled ball mill according to claim 1, wherein: The rotating tank (205) forms a mutually rotating structure with the rotating groove (211) via the motor (209), and the rotating tank (205) forms a mutually rotating structure with the outer tank body (202) via the motor (209).

4. A liquid nitrogen cooled ball mill according to claim 1, wherein: One end of the bolt (207) is threaded into the threaded groove (203), and the top cover (204) is fixed to the outer frame (201) by the bolt (207).

5. A liquid nitrogen cooled ball mill according to claim 1, wherein: The feed pipe (208) is provided in two sets, and the two sets of feed pipes (208) are symmetrically distributed along the rotating tank (205).

6. A liquid nitrogen cooled ball mill according to claim 1, wherein: The liquid inlet pipe (210) is also provided in two sets. The liquid inlet pipe (210) is located inside the feed pipe (208) and is symmetrically distributed along the outer tank (202).

7. A liquid nitrogen cooled ball mill according to claim 1, wherein: The main body of the motor (209) is mounted on the outer frame (201), and the top cover (204) and the outer frame (201) form a mutually rotating structure.

8. A liquid nitrogen cooled ball mill according to claim 1, wherein: The top edges of both the feed pipe (208) and the liquid inlet pipe (210) are provided with threaded structures.

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