Crushing device for dielectric ceramic preparation

Abstract

The crushing device comprises a ball-milling cylinder, a base plate, a support, a ball-milling motor and a gear set, the base plate is fixedly connected with the inner wall of the ball-milling cylinder, the ball-milling cylinder and the ball-milling motor are both connected with the support, the ball-milling motor is connected with the ball-milling cylinder through the gear set, the ball-milling cylinder comprises a first cylinder body and a second cylinder body, and the first cylinder body and the second cylinder body are fixedly connected through the support. The second barrel is arranged on the inner side of the first barrel, a vacuum cavity is formed between the first barrel and the second barrel, a plurality of piston sleeves are evenly arranged in the vacuum cavity, one end of each piston sleeve is fixedly connected with the second barrel, and the end, not connected with the second barrel, of each piston sleeve is fixedly connected with the first barrel. A spring piston is arranged in the piston sleeve, the piston sleeve at the lower end of the spring piston is communicated with the vacuum cavity, and the piston sleeve at the upper end of the spring piston is communicated with the outside. In conclusion, through the arrangement of the vacuum cavity and the spring piston, vibration and noise can be reduced, meanwhile, material adhesion on the inner wall is reduced, and waste is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of dielectric ceramics, and particularly to a pulverizing device for preparing dielectric ceramics. Background Art

[0002] Dielectric ceramics, also known as dielectric ceramics, are widely used in many fields such as electronics, communication, energy, and medical. Such ceramic materials are usually composed of metal oxides and other elements or compounds, and are made by high-temperature sintering processing, with characteristics such as high dielectric constant, low dielectric loss, and high insulation resistivity. Thanks to the excellent properties of dielectric ceramics, they are widely used in electronic components such as capacitors, dielectrics, and sensors. In addition, these ceramic materials usually also have good temperature stability and mechanical properties, and can maintain stable electrical properties under different environmental conditions, which enables them to work stably for a long time in most environments. During the production process of dielectric ceramics, it is necessary to uniformly pulverize and mix the raw materials. The pulverizing and mixing process is often operated by a ball mill. However, the ball mill has a long processing time and large vibration. During operation, the cylinder body rotates rapidly, and the vibration will cause wear to the rotating shaft, and will also generate noise, reducing the service life of the device and even posing a health hazard to the on-site staff. Moreover, during the ball milling preparation process, a large amount of material will adhere to the inner wall of the cylinder body, which is likely to cause material waste. Therefore, in the technical field of dielectric ceramics, it is necessary to propose a pulverizing device for preparing dielectric ceramics that can reduce device wear and noise and reduce material waste. Summary of the Invention

[0003] Aiming at the above-mentioned prior art, the present invention aims to provide a pulverizing device for preparing dielectric ceramics, and the main technical problem to be solved is how to reduce device wear and noise and reduce material waste.

[0004] To achieve the above object, the technical solution of the embodiment of the present invention is realized as follows: A pulverizing device for preparing dielectric ceramics includes a ball milling cylinder body, a backing plate, a bracket, a ball milling motor, and a gear set. The backing plate is fixedly connected to the inner wall of the ball milling cylinder body. The ball milling cylinder body and the ball milling motor are both connected to the bracket. The ball milling motor is connected to the ball milling cylinder body through the gear set. The ball milling cylinder body includes a first cylinder body and a second cylinder body. The second cylinder body is arranged inside the first cylinder body. A vacuum cavity is formed between the first cylinder body and the second cylinder body. A plurality of piston sleeves are evenly arranged in the vacuum cavity. One end of the piston sleeve is fixedly connected to the second cylinder body, and the end of the piston sleeve not connected to the second cylinder body is fixedly connected to the first cylinder body. A spring piston is arranged inside the piston sleeve. The piston sleeve at the lower end of the spring piston is communicated with the vacuum cavity, and the piston sleeve at the upper end of the spring piston is communicated with the outside.

[0005] Preferably, an annular groove is provided inside the piston sleeve. The spring piston includes a telescopic spring and a piston plate, and the piston plate is connected to the annular groove through the telescopic spring.

[0006] Preferably, a buffer thin layer is provided at the upper end of the piston plate.

[0007] Preferably, a number of annularly arranged support channel steels are provided between the first cylinder body and the second cylinder body, and the outside of the piston sleeve is fixedly connected to the support channel steels.

[0008] Preferably, a number of openings are provided at the lower end of the support channel steel near the piston sleeve, and the openings communicate the inside of the support channel steel with the vacuum cavity.

[0009] Preferably, four partition plates are evenly arranged annularly between the first cylinder body and the second cylinder body, and the four partition plates divide the vacuum cavity into four parts.

[0010] Preferably, four air extraction interfaces are provided on one side of the vacuum cavity, and the four air extraction interfaces are respectively communicated with the four vacuum cavities. An air extraction socket matching with the air extraction interface is provided at the upper end of the bracket. The air extraction socket is connected to the bracket through an electric telescopic rod. A vacuum pump is provided on one side of the bracket, and the vacuum pump is connected to the air extraction socket through a vacuum extraction pipeline.

[0011] Preferably, four intake valves are provided on both sides of the vacuum cavity, and the intake valves are all electric valves.

[0012] Preferably, a corrugated pipe is provided at the connection between the air extraction socket and the telescopic rod, and the air extraction socket is an electromagnetic suction socket.

[0013] Preferably, a sealing motor is provided inside the air extraction socket, and the sealing motor can drive the air extraction socket to rotate relative to the telescopic rod.

[0014] The beneficial effect of the present invention is that: by providing a vacuum cavity between the first cylinder body and the second cylinder body in this application, when the grinding balls and materials are filled into the ball mill cylinder body for crushing and mixing, the vacuum cavity can reduce the noise generated during collision and vibration.

[0015] The present application is also provided with a spring piston. The spring piston can convert a part of the vibration transmitted to the ball mill cylinder into the up-and-down movement of the spring piston and the change of elastic potential energy, thereby reducing the offset generated by the vibration during the rapid rotation of the ball mill cylinder during operation, reducing wear, and prolonging the service life of the device. Before the ball mill cylinder performs crushing and mixing, the vacuum chamber is evacuated. The spring piston is in an extended or compressed state under the action of the external atmospheric pressure. After the crushing and mixing process of the ball mill cylinder is completed, the vacuum chamber is controlled to be opened, and the pressure in the vacuum chamber quickly returns to the atmospheric pressure, which will push the spring piston to bounce up and down, thereby hitting the ball mill cylinder and causing the materials adhered to the inner wall of the ball mill cylinder to fall off, reducing waste.

[0016] In summary, by providing the vacuum chamber and the spring piston, the present application can reduce vibration and noise, and at the same time reduce the adhesion of materials to the inner wall and reduce waste. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a crushing device for preparing dielectric ceramics in an embodiment of the present application; Figure 2 It is a schematic structural diagram of the first cylinder and the second cylinder in an embodiment of the present application; Figure 3 It is a schematic structural diagram of the second cylinder in an embodiment of the present application; Figure 4 It is a left view of the first cylinder and the second cylinder in an embodiment of the present application; Figure 5 It is a schematic structural diagram of the support channel steel in an embodiment of the present application; Figure 6 It is a schematic structural diagram of the air extraction interface and the air extraction socket in an embodiment of the present application; Explanation of the Reference Numerals in the Drawings: 1. Ball mill cylinder; 2. Base plate; 3. Support; 4. Ball mill motor; 5. Gear set; 6. Base plate fixing bolt; 7. Vacuum pump; 8. Vacuum extraction pipeline; 101. First cylinder; 102. Second cylinder; 103. Vacuum chamber; 104. Piston sleeve; 105. Spring piston; 106. Telescopic spring; 107. Piston plate; 108. Annular slot; 109. Buffer layer; 110. Support channel steel; 111. Opening; 131. Partition plate; 132. Air extraction interface; 133. Air extraction socket; 134. Electric telescopic rod; 135. Intake valve; 136. Bellows; 137. Sealing motor. Detailed Embodiment

[0018] The technical solution of the present invention will be further elaborated in detail below in conjunction with the accompanying drawings of the specification and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. In the following description, the expression "some embodiments" is described, which describes a subset of all possible embodiments. However, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0019] Embodiment 1 Refer to the appendix Figures 1-5, this application provides a crushing device for preparing dielectric ceramics, which includes a ball milling cylinder body 1, a backing plate 2, a bracket 3, a ball milling motor 4 and a gear set 5. The backing plate 2 is fixedly connected to the inner wall of the ball milling cylinder body 1. Both the ball milling cylinder body 1 and the ball milling motor 4 are connected to the bracket 3. The ball milling motor 4 is connected to the ball milling cylinder body 1 through the gear set 5. The ball milling cylinder body 1 includes a first cylinder body 101 and a second cylinder body 102. The second cylinder body 102 is arranged inside the first cylinder body 101. A vacuum cavity 103 is formed between the first cylinder body 101 and the second cylinder body 102. A number of piston sleeves 104 are evenly arranged in the vacuum cavity 103. One end of the piston sleeve 104 is fixedly connected to the second cylinder body 102, and the end of the piston sleeve 104 not connected to the second cylinder body 102 is fixedly connected to the first cylinder body 101. A spring piston 105 is arranged inside the piston sleeve 104. The piston sleeve 104 at the lower end of the spring piston 105 communicates with the vacuum cavity 103, and the piston sleeve 104 at the upper end of the spring piston 105 communicates with the outside. By arranging the vacuum cavity 103 between the first cylinder body 101 and the second cylinder body 102, when the ball milling cylinder body 1 is filled with grinding balls and materials for crushing and mixing, the vacuum cavity 103 can reduce the noise generated during collision and vibration. The ball milling motor 4 drives the ball milling cylinder body 1 to rotate through the gear set 5. The device is also provided with a spring piston 105, which can convert a part of the vibration transmitted to the ball milling cylinder body 1 into the up and down movement of the spring piston 105 and the change of elastic potential energy, thereby reducing the offset generated by vibration during the rapid rotation of the ball milling cylinder body 1 during operation, reducing wear, and extending the service life of the device. And before the ball milling cylinder body 1 crushes and mixes, the vacuum cavity 103 is evacuated. The spring piston 105 is in an extended or compressed state under the action of external atmospheric pressure. After the crushing and mixing process of the ball milling cylinder body 1 is completed, the vacuum cavity 103 is controlled to be opened, and the pressure in the vacuum cavity 103 quickly returns to atmospheric pressure, which will push the spring piston 105 to bounce up and down, thereby hitting the ball milling cylinder body 1 and making the materials adhered to the inner wall of the ball milling cylinder body 1 fall off, reducing waste. In summary, by arranging the vacuum cavity 103 and the spring piston 105, the device can reduce vibration and noise, and at the same time reduce the adhesion of materials on the inner wall and reduce waste.

[0020] Specifically, an annular groove 108 is arranged inside the piston sleeve 104. The spring piston 105 includes a telescopic spring 106 and a piston plate 107. The piston plate 107 is connected to the annular groove 108 through the telescopic spring 106. Refer to the attached Figure 5, in this embodiment, the lower end of the telescopic spring 106 is fixedly connected to the lower part of the annular groove 108, and the upper end of the telescopic spring 106 is fixedly connected to the lower surface of the piston plate 107. When the vacuum chamber 103 is evacuated, the telescopic spring 106 is compressed by the atmospheric pressure to move the piston plate 107 downward. After the crushing and mixing process of the device is completed, the vacuum chamber 103 is communicated with the outside world, and the telescopic spring 106 rebounds to drive the piston plate 107 to strike the upper end of the annular groove 108 and is compressed again after striking the annular groove 108. This process is repeated continuously, striking the annular groove 108 multiple times, driving the ball mill cylinder 1 to vibrate, and thus causing the materials adhering to the inner wall to fall off.

[0021] Specifically, a buffer layer 109 is provided at the upper end of the piston plate 107. In this embodiment, the buffer layer 109 is set as a rubber layer. The rubber layer can reduce the noise when the piston plate 107 strikes the annular groove 108, and at the same time reduce the wear of the annular groove 108 and the piston plate 107. When wear occurs, only the buffer layer 109 needs to be replaced to continue using. It should be understood that the buffer layer 109 can also be replaced with materials such as fabric, plastic or wooden structure that can reduce noise and are convenient for replacement. The buffer layer 109 can improve the reliability of this device.

[0022] Specifically, several annularly arranged support channel steels 110 are provided between the first cylinder 101 and the second cylinder 102, and the outside of the piston sleeve 104 is fixedly connected to the support channel steels 110. The support channel steel 110 is set as a hollow structure, and the front side and the rear side of the support channel steel 110 are communicated with the vacuum chamber 103. The air pressure change during the evacuation and the restoration of the atmospheric pressure in the vacuum chamber 103 is transmitted to the piston sleeve 104 through the hollow structure. When the piston plate 107 inside the piston sleeve 104 strikes the annular groove 108, the vibration force during the strike can be more comprehensively transmitted to the second cylinder 102 through the support channel steel 110, improving the effect of removing the materials adhering to the inner wall.

[0023] Specifically, several openings 111 are provided at the lower end of the support channel steel 110 near the piston sleeve 104, and the openings 111 communicate the inside of the support channel steel 110 with the vacuum chamber 103. The openings 111 enable the inside of the support channel steel 110 to be affected by the air pressure change in the vacuum chamber 103 faster, making the telescopic spring 106 contract and rebound more quickly, and improving the striking effect of the piston plate 107.

[0024] Embodiment 2 Refer to the attached Figures 1-6, The difference between this embodiment and Embodiment 1 is that four partition plates 131 are evenly arranged in a ring between the first cylinder 101 and the second cylinder 102, and the four partition plates 131 divide the vacuum cavity 103 into four parts. Dividing the vacuum cavity 103 into four parts can improve the sealing effect. At the same time, the opening of the four vacuum cavities 103 can be controlled separately. Rotate the ball milling cylinder 1 to open one of the vacuum cavities 103 located above, and drive the corresponding piston plate 107 to rebound, so that the materials adhering to the inner wall of the upper ball milling cylinder 1 fall off. Rotate the ball milling cylinder 1 and repeat this step four times to completely remove the materials adhering to the inside of the ball milling cylinder 1.

[0025] Specifically, four air extraction interfaces 132 are provided on one side of the vacuum cavity 103. The four air extraction interfaces 132 are respectively connected to the four vacuum cavities 103. An air extraction socket 133 that cooperates with the air extraction interface 132 is provided at the upper end of the bracket 3. The air extraction socket 133 is connected to the bracket 3 through an electric telescopic rod 134. An air extraction vacuum pump 7 is provided on one side of the bracket 3. The air extraction vacuum pump 7 is connected to the air extraction socket 133 through an air extraction pipeline 8. When the telescopic rod shortens, the air extraction socket 133 is disconnected from the air extraction interface 132, and the vacuum pump 7 stops working; when the telescopic rod extends, the air extraction socket 133 is connected to the air extraction interface 132, and the vacuum pump 7 is connected to the vacuum cavity 103 through the air extraction socket 133 and the air extraction interface 132 to extract vacuum. Evacuating before the crushing and mixing operation of this device can ensure that a certain vacuum degree is maintained in the vacuum cavity 103 each time it runs to reduce the noise of the device, avoid the rapid decrease of the vacuum degree and the increase of noise caused by the long-term operation and use of the ball milling cylinder 1. At the same time, when the ball milling cylinder 1 is not working, the vacuum cavity 103 is opened and returns to normal atmospheric pressure, avoiding deformation or damage of the device caused by the pressure difference inside and outside the vacuum cavity 103, and improving the service life of this device.

[0026] Specifically, four intake valves 135 are provided on both sides of the vacuum cavity 103, and the intake valves 135 are all set as electric valves. The four intake valves 135 on each side are correspondingly connected to the four vacuum cavities 103. When any one of the vacuum cavities 103 rotates to the upper side, the corresponding intake valves 135 on both sides are opened, so that the vacuum cavity 103 quickly returns to atmospheric pressure, and then the materials adhering to the inner wall of the ball milling cylinder 1 fall off. The intake valves 135 are all set as electric valves, making this operation more convenient and reliable.

[0027] Specifically, a bellows 136 is provided at the connection between the air extraction socket 133 and the telescopic rod, and the air extraction socket 133 is set as an electromagnetic suction socket. When the bellows 136 enables the air extraction socket 133 to be connected to the air extraction interface 132, when there is a slight deviation in the rotation angle of the ball milling cylinder body 1, the bellows 136 can be bent and moved to a certain extent, so that the air extraction socket 133 is normally connected to the air extraction interface 132. The air extraction socket 133 is set as an electromagnetic suction socket, so that the air extraction socket 133 and the air extraction interface 132 can be connected more quickly and reliably.

[0028] Specifically, a sealing motor 137 is provided inside the air extraction socket 133, and the sealing motor 137 can drive the air extraction socket 133 to rotate relative to the telescopic rod. Threads and a sealing ring structure are provided on the air extraction socket 133, and threads matching the air extraction socket 133 are also provided on the air extraction interface 132. The rotation of the sealing motor 137 can make the air extraction socket 133 and the air extraction interface 132 be connected and sealed more tightly, ensuring the vacuum pumping effect.

[0029] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A pulverizing device for preparing dielectric ceramics, comprising a ball milling cylinder body (1), a backing plate (2), a bracket (3), a ball milling motor (4) and a gear set (5). The backing plate (2) is fixedly connected to the inner wall of the ball milling cylinder body (1). The ball milling cylinder body (1) and the ball milling motor (4) are both connected to the bracket (3). The ball milling motor (4) is connected to the ball milling cylinder body (1) through the gear set (5), and is characterized in that, The ball milling cylinder body (1) includes a first cylinder body (101) and a second cylinder body (102). The second cylinder body (102) is arranged inside the first cylinder body (101). A vacuum cavity (103) is formed between the first cylinder body (101) and the second cylinder body (102). A number of piston sleeves (104) are evenly arranged in the vacuum cavity (103). One end of the piston sleeve (104) is fixedly connected to the second cylinder body (102), and the end of the piston sleeve (104) that is not connected to the second cylinder body (102) is fixedly connected to the first cylinder body (101). A spring piston (105) is arranged inside the piston sleeve (104). The piston sleeve (104) at the lower end of the spring piston (105) communicates with the vacuum cavity (103), and the piston sleeve (104) at the upper end of the spring piston (105) communicates with the outside.

2. A pulverizing device for preparing dielectric ceramics according to claim 1, characterized in that, An annular groove (108) is arranged inside the piston sleeve (104). The spring piston (105) includes a telescopic spring (106) and a piston plate (107). The piston plate (107) is connected to the annular groove (108) through the telescopic spring (106).

3. A pulverizing device for preparing dielectric ceramics according to claim 2, characterized in that, A buffer thin layer (109) is arranged at the upper end of the piston plate (107).

4. A pulverizing device for preparing dielectric ceramics according to claim 3, wherein, A number of annularly arranged support channel steels (110) are arranged between the first cylinder body (101) and the second cylinder body (102). The outside of the piston sleeve (104) is fixedly connected to the support channel steel (110).

5. A pulverizing device for preparing dielectric ceramics according to claim 4, characterized in that, A number of openings (111) are arranged at the lower end of the support channel steel (110) near the piston sleeve (104). The openings (111) communicate the inside of the support channel steel (110) with the vacuum cavity (103).

6. A pulverizing device for preparing dielectric ceramics according to claim 1, characterized in that, Four partition plates (131) are evenly arranged in an annular shape between the first cylinder body (101) and the second cylinder body (102). The four partition plates (131) divide the vacuum cavity (103) into four parts.

7. A pulverizing device for preparing dielectric ceramics according to claim 6, characterized in that, Four air extraction interfaces (132) are arranged on one side of the vacuum cavity (103). The four air extraction interfaces (132) are respectively communicated with the four vacuum cavities (103). An air extraction socket (133) that cooperates with the air extraction interface (132) is arranged at the upper end of the bracket (3). The air extraction socket (133) is connected to the bracket (3) through an electric telescopic rod (134). An air extraction vacuum pump (7) is arranged on one side of the bracket (3). The air extraction vacuum pump (7) is connected to the air extraction socket (133) through an air extraction pipeline (8).

8. A pulverizing device for preparing dielectric ceramics according to claim 7, characterized in that, Four air inlet valves (135) are respectively arranged on both sides of the vacuum cavity (103). The air inlet valves (135) are all set as electric valves.

9. The pulverizing device for preparing dielectric ceramics according to claim 8, characterized in that, A corrugated pipe (136) is arranged at the connection part of the air extraction socket (133) and the telescopic rod. The air extraction socket (133) is set as an electromagnet magnetic attraction socket.

10. A crushing device for preparing dielectric ceramics according to claim 9, characterized in that, A sealing motor (137) is arranged inside the air extraction socket (133), and the sealing motor (137) can drive the air extraction socket (133) to rotate relative to the telescopic rod.

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