Ball milling tank with controllable temperature, heat insulation and noise reduction characteristics

Abstract

The utility model relates to a ball-milling tank with controllable temperature, heat insulation and noise reduction characteristics, which is characterized by comprising a relatively fixed ball-milling outer tank and a ball-milling inner tank positioned in the ball-milling outer tank and capable of relatively coaxially rotating, and the ball-milling outer tank comprises an outer tank body and an outer tank cover arranged on a tank opening of the outer tank body; the inner ball-milling tank comprises an inner tank body and an inner tank cover connected to a tank opening of the inner tank body in a sealed mode, rotating shafts extending out of the outer ball-milling tank are arranged on the outer side face of the inner tank cover and the bottom side face of the inner tank body, and an annular interval groove is formed between the inner peripheral wall of the outer tank body and the outer peripheral wall of the inner tank body; a cylindrical rolling bearing and a cylindrical heater are arranged in the annular spacing groove, and a wire of the cylindrical heater penetrates through the ball-milling outer tank to be connected with a temperature controller located on the peripheral wall of the ball-milling outer tank so as to control the temperature in the inner tank body to be 500-1200 DEG C. The ball milling tank with controllable temperature, heat insulation and noise reduction characteristics is reasonable in design, and temperature control in the ball milling process is facilitated.

Description

Technical field:

[0002] The utility model relates to a ball milling jar with controllable temperature and heat insulation and noise reduction characteristics. Background technology:

[0004] The function of a ball mill is to grind materials. It is mainly composed of a cylindrical tank body and a cover-shaped tank lid fixed to the tank mouth of the cylindrical tank body. The current ball mill can only provide a simple ball milling function and cannot effectively control the temperature generated during the ball milling process. Most of its energy is dissipated in the form of heat energy, resulting in energy waste and reduced ball milling efficiency. In addition, the existing ball mill can only realize the grinding function and cannot change the crystal structure of the powder material to be ball milled.

[0005] For example, the Chinese patent "A temperature control mechanism for a ball mill", publication number CN220460865U

[0006] , install the lower shell and the upper shell in the middle of the ball mill, the water pump pumps the cold water in the water tank into the upper and lower half ring pipes, and sprays uniform water mist to the ball mill through the nozzle to cool the ball mill, and the water collected in the upper and lower shells is discharged into the collection box and filtered by the filter before entering the water tank again for circulation, which has a good temperature control effect and will not affect the material in the ball mill. The upper shell can be quickly installed and fixed through the cooperation of the pressure rod and the reset block, which is highly flexible and practical; it includes a base, a fixed The fixed frame and the ball mill are fixedly arranged on the top of the base, and the ball mill is rotatably arranged on the upper part of the fixed frame; it also includes a cover mechanism, a spraying mechanism and a connecting mechanism, the cover mechanism surrounds the middle part of the ball mill, the spraying mechanism is arranged on the cover mechanism, and the connecting mechanism is arranged on the cover mechanism. Although this patent can realize the controllable temperature of the ball mill, its temperature control cannot change the crystal structure of the powder material to be ball milled, and its structure is complex, and it is inconvenient to install and use. In addition, the ball mill does not have the functions of heat insulation and noise reduction. Summary of the invention:

[0008] The purpose of the utility model is to provide a ball mill jar with controllable temperature and heat insulation and noise reduction characteristics. The ball mill jar with controllable temperature and heat insulation and noise reduction characteristics is reasonably designed and is conducive to achieving temperature control during the ball milling process.

[0009] The utility model has a ball mill jar with controllable temperature and heat insulation and noise reduction characteristics, and is characterized in that: it includes a relatively fixed ball mill outer tank and a ball mill inner tank located in the ball mill outer tank body and capable of relatively coaxial rotation, the ball mill outer tank includes an outer tank body and an outer tank cover provided on the tank mouth of the outer tank body, the ball mill inner tank includes an inner tank body and an inner tank cover sealedly connected to the tank mouth of the inner tank body, the outer side surface of the inner tank cover and the bottom side surface of the inner tank body are provided with a rotating shaft extending out of the ball mill outer tank, an annular spacing groove is formed between the inner circumferential wall of the outer tank body and the outer circumferential wall of the inner tank body, a cylindrical rolling bearing and a cylindrical heater are provided in the annular spacing groove, and the wire of the cylindrical heater passes through the ball mill outer tank and is connected to the temperature controller located on the outer circumferential wall of the ball mill outer tank to control the temperature inside the inner tank body to 500-1200 degrees Celsius.

[0010] Preferably, a through hole is provided at the center of the bottom of the outer tank body and the center of the outer tank cover, and a rolling bearing is installed in the through hole, and the rotating shaft passes through the rolling bearing.

[0011] Preferably, the mouth of the inner tank body is provided with an external thread, and the inner tank cover is provided with an internal thread connected to the external thread.

[0012] Preferably, the outer tank cover is locked and fixed to the tank opening of the outer tank body by bolts.

[0013] Preferably, the outer end portion of the rotating shaft is connected to a motor provided outside the ball mill outer tank, and the ball mill inner tank is rotated by the motor.

[0014] Preferably, the ball mill outer tank is made of alloy material and has a heat insulation layer on the outer periphery of the ball mill outer tank.

[0015] The method of using the utility model is as follows: first, the grinding balls and powder (material to be ground) are placed in the inner tank body in sequence, and then the inner tank body and the inner tank cover are screwed together to complete the assembly of the ball mill inner tank; then, the cylindrical rolling bearing is slid into the ball mill outer tank body (the cylindrical heater has been pre-embedded in the inner circumferential wall of the ball mill outer tank), and the assembled ball mill inner tank is placed into the cylindrical rolling bearing; then, the outer tank cover and the outer tank body are screwed together to complete the overall assembly of the ball mill tank body, and the assembled ball mill tank body is placed horizontally so that its rotating shaft is aligned with the motor. Then, set the required ball milling temperature through the temperature controller, and then turn on the motor. Under the action of the motor drive and rolling bearing, the shaft drives the inner ball mill to rotate, while the outer ball mill remains stationary, and the ball milling work begins. After the ball milling is completed, turn off the motor, wait for the ball mill body to cool to room temperature, unscrew the bolts, and open the outer ball mill cover. Take out the inner ball mill, unscrew the threads, separate the inner ball mill body and the inner ball mill cover, pour out the milling powder and grinding balls in the inner ball mill body, and sieve out the required milling powder. The ball milling is completed. After cleaning, repeat the above steps and start the next ball milling.

[0016] During the ball milling process, the temperature inside the tank is controlled at 500-1200 degrees through a temperature controller, so that the collision between the grinding balls and the inner tank will generate an instantaneous temperature of more than 1000 degrees and a pressure of 1-10 GPa locally in the material, which will cause the crystal structure of the powder material to change, which is beneficial to improving the ball milling efficiency. Description of the drawings:

[0018] Figure 1 It is a cross-sectional view of the utility model;

[0019] Figure 2 This is an exploded view of the ball mill inner tank;

[0020] Figure 3 yes Figure 1 Cross-section view of the middle part;

[0021] Figure 4 yes Figure 1 Cross-sectional view of the positions of the middle and outer tank covers;

[0022] Figure 5 yes Figure 1 Cross-sectional view of the bottom of the middle and outer tanks. Specific implementation method:

[0024] The method of the present utility model is further described in detail below with reference to the embodiments. It should be noted that the scope of protection of the present utility model shall include but not be limited to the technical content disclosed in the embodiments.

[0025] The utility model has a ball mill jar with controllable temperature and heat insulation and noise reduction characteristics, including a relatively fixed ball mill outer tank 1 and a ball mill inner tank 2 located in the ball mill outer tank 1 and capable of relatively coaxial rotation. The above-mentioned ball mill outer tank 1 and ball mill inner tank 2 are made of alloy material, and an insulation layer 8 (the insulation layer can be a melamine resin foam layer) is provided on the outer periphery of the ball mill outer tank 1 to prevent heat loss.

[0026] The ball mill outer tank 1 includes an outer tank body 101 and an outer tank cover 102 provided on the tank mouth of the outer tank body. The outer tank cover 102 is locked and fixed to the tank mouth of the outer tank body 101 by bolts 9, that is, a threaded hole is provided on the wall of the tank mouth of the outer tank body 101, and a through hole is provided on the outer tank cover 102, and the bolt 9 passes through the through hole and is locked with the threaded hole.

[0027] The ball mill inner tank 2 includes an inner tank body 201 and an inner tank cover 202 sealed on the tank mouth of the inner tank body. The tank mouth of the inner tank body is provided with an external thread 203, and the inner tank cover is provided with an internal thread 204 connected to the external thread. The internal thread 204 is threadedly connected to the external thread 203 to achieve the connection and fixation of the inner tank cover 202 and the inner tank body 201.

[0028] The outer side surface of the inner tank cover 202 and the bottom side surface of the inner tank body 201 are solid (or integrated) with a rotating shaft 3 extending out of the ball mill outer tank. The outer end of the rotating shaft 3 is connected to a motor provided outside the ball mill outer tank, and the rotation of the ball mill inner tank is realized under the action of the motor.

[0029] An annular spacing groove is formed between the inner circumferential wall of the outer tank body and the outer circumferential wall of the inner tank body, and a cylindrical rolling bearing 4 and a cylindrical heater 5 are arranged in the annular spacing groove, wherein the cylindrical rolling bearing 4 is a commercially available needle bearing, which can be sleeved on the outer circumferential wall of the inner tank body; wherein the cylindrical heater 5 can be a rigid tube sleeve that can conduct heat, and an electric heating wire is embedded in the tube sleeve. The tube sleeve is a rigid body and does not deform during operation.

[0030] The cylindrical rolling bearing 4 can reduce the friction coefficient during the rotation of the ball mill inner tank, so that the ball mill inner tank can achieve smooth rotational motion. Through the connection between the outer tank cover 102 and the outer tank body 101, the ball mill inner tank can only achieve rotational motion and cannot move longitudinally and laterally, while ensuring that the ball mill outer tank does not rotate with the ball mill inner tank.

[0031] The wire of the cylindrical heater (ie the wire connected to the heating wire) passes through the ball mill outer tank and is connected to the temperature controller 6 located on the outer peripheral wall of the ball mill outer tank to control the temperature inside the inner tank body to 500-1200 degrees Celsius.

[0032] In order to ensure smooth rotation of the inner tank body 201, a through hole is provided at the bottom center of the outer tank body (referring to the bottom opposite to the outer tank cover) and the center of the outer tank cover. A rolling bearing 7 is installed in the through hole, and the rotating shaft 3 passes through the rolling bearing, which can be a commercially available needle bearing.

[0033] The method of using the utility model is as follows: first, the grinding balls and powder (material to be ground) are placed in the inner tank body in sequence, and then the inner tank body and the inner tank cover are screwed together to complete the assembly of the ball mill inner tank; then, the cylindrical rolling bearing is slid into the ball mill outer tank body (the cylindrical heater has been pre-embedded in the inner circumferential wall of the ball mill outer tank), and the assembled ball mill inner tank is placed into the cylindrical rolling bearing; then, the outer tank cover and the outer tank body are screwed together to complete the overall assembly of the ball mill tank body, and the assembled ball mill tank body is placed horizontally so that its rotating shaft is aligned with the motor. Then, set the required ball milling temperature through the temperature controller, and then turn on the motor. Under the action of the motor drive and rolling bearing, the shaft drives the inner ball mill to rotate, while the outer ball mill remains stationary, and the ball milling work begins. After the ball milling is completed, turn off the motor, wait for the ball mill body to cool to room temperature, unscrew the bolts, and open the outer ball mill cover. Take out the inner ball mill, unscrew the threads, separate the inner ball mill body and the inner ball mill cover, pour out the milling powder and grinding balls in the inner ball mill body, and sieve out the required milling powder. The ball milling is completed. After cleaning, repeat the above steps and start the next ball milling.

[0034] During the ball milling process, the temperature inside the tank is controlled at 500-1200 degrees through a temperature controller, so that the collision between the grinding balls and the inner tank will generate an instantaneous temperature of more than 1000 degrees and a pressure of 1-10 GPa locally in the material, which will cause the crystal structure of the powder material to change, which is beneficial to improving the ball milling efficiency.

[0035] Traditional ball mills can only provide simple ball milling functions and cannot effectively control the temperature generated during the ball milling process. Most of the remaining energy is dissipated as heat, resulting in energy waste and reduced ball milling efficiency.

[0036] In addition, the outer tank body can be made of alloy material and melamine resin foam (as a heat insulation layer, thermal insulation layer, and sound insulation layer). Its function is to have excellent sound absorption, flame retardancy, heat insulation and moisture and heat resistance properties, which can effectively reduce the thermal damage to the body caused by high temperature in the tank and reduce the impact of ball milling noise on the working environment.

[0037] In summary, the device provided by the present invention has a simple structure and reasonable design. It can control the temperature during the ball milling process and has a certain high-temperature calcination function. This not only significantly reduces energy loss, improves the efficiency and quality of ball milling, but also effectively reduces the noise generated during the ball milling process. In addition, the device design can isolate the influence of the temperature generated by the ball milling on other equipment, thereby ensuring the stability and safety of the operation. It is easy to operate, has high ball milling efficiency, has strong practicality, and is suitable for various ball milling application scenarios.

[0038] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A ball mill with controllable temperature and heat insulation and noise reduction properties, characterized by: The invention comprises a relatively fixed ball mill outer tank and a ball mill inner tank located in the ball mill outer tank body and capable of relatively coaxial rotation. The ball mill outer tank comprises an outer tank body and an outer tank cover provided on the tank mouth of the outer tank body. The ball mill inner tank comprises an inner tank body and an inner tank cover sealedly connected to the tank mouth of the inner tank body. The outer side surface of the inner tank cover and the bottom side surface of the inner tank body are provided with a rotating shaft extending out of the ball mill outer tank. An annular spacing groove is formed between the inner circumferential wall of the outer tank body and the outer circumferential wall of the inner tank body. A cylindrical rolling bearing and a cylindrical heater are provided in the annular spacing groove. The wire of the cylindrical heater passes through the ball mill outer tank and is connected to a temperature controller located on the outer circumferential wall of the ball mill outer tank to control the temperature inside the inner tank body to 500-1200 degrees Celsius.

2. The ball mill with controllable temperature and heat-insulating and noise-reducing properties according to claim 1, characterized in that: A through hole is provided at the center of the bottom of the outer tank body and the center of the outer tank cover. Rolling bearings are installed in the through holes, and the rotating shaft passes through the rolling bearings.

3. The ball mill with controllable temperature and heat-insulating and noise-reducing properties according to claim 1, characterized in that: The tank mouth of the inner tank body is provided with an external thread, and the inner tank cover is provided with an internal thread connected with the external thread.

4. The ball mill with controllable temperature and heat-insulating and noise-reducing properties according to claim 1, characterized in that: The outer tank cover is locked and fixed to the tank opening of the outer tank body by means of bolts.

5. The ball mill with controllable temperature and heat-insulating and noise-reducing properties according to claim 1, characterized in that: The outer end of the rotating shaft is connected to a motor arranged outside the ball mill outer tank, and the rotation of the ball mill inner tank is achieved under the action of the motor.

6. The ball mill with controllable temperature and heat-insulating and noise-reducing properties according to claim 1, characterized in that: The ball mill outer tank is made of alloy material and has a heat insulation layer on the outer periphery of the ball mill outer tank.

Images