Aluminum nitride ceramic slurry stirring defoaming device

Abstract

The utility model discloses an aluminum nitride ceramic slurry stirring bubble removing device. Aluminum nitride ceramic slurry stirring bubble removing device, include: the stirring bubble removing mechanism and vacuum pump, the stirring bubble removing mechanism contains the stirring jar, the upper end of stirring jar is equipped with the stirring sealing cover, the inside of stirring sealing cover is connected fixed through bolt with first air extraction valve and second air extraction valve, the inside of stirring sealing cover is equipped with through -hole groove, under the vacuum environment, the pressure of gas is lower, and the bubble can be more easily released from liquid, through the vacuum pump air extraction, can effectively reduce or prevent the formation of bubble in aluminum nitride ceramic slurry, in the stirring process, the aluminum nitride ceramic slurry under the vacuum environment is easier to exclude the bubble, this helps to improve the compactness and uniformity of material, can reduce the bubble of aluminum nitride ceramic slurry.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum nitride ceramic slurry stirring and defoaming device, and in particular to an aluminum nitride ceramic slurry stirring and defoaming device. Background Technology

[0002] An aluminum nitride ceramic slurry stirring and defoaming device is a special equipment used to process aluminum nitride ceramic slurry. Its main function is to remove air bubbles from the slurry during the preparation of aluminum nitride ceramic materials, so as to ensure the quality of the prepared aluminum nitride ceramic materials.

[0003] The prior art discloses a technical solution for an aluminum nitride ceramic slurry stirring and defoaming device. After the slurry is mixed evenly, the stirring motor stirs it at a very slow speed for a period of time to perform preliminary defoaming. Then, the controller controls the opening of sealing valve one to allow the slurry to enter the defoaming tank. After sealing valve one is closed, the vacuum pump is turned on to perform vacuum defoaming. After defoaming is completed, the controller controls the opening of sealing valve two and the discharge pump to allow the discharge pump to transport the slurry out.

[0004] In this scheme, during the process of pouring the slurry into the defoaming tank, the gas inside the mixing tank mixes with the slurry, resulting in air bubbles inside the slurry. Since the vacuum pump can only reduce the number of air bubbles on the slurry, the air bubbles inside the slurry are not completely removed.

[0005] Therefore, it is necessary to provide an aluminum nitride ceramic slurry stirring and defoaming device to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the prior art, this utility model provides an aluminum nitride ceramic slurry stirring and defoaming device that can create a vacuum environment by evacuating the inside of the stirring tank, which can reduce the occurrence of bubbles during the stirring process of aluminum nitride ceramic slurry.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An aluminum nitride ceramic slurry stirring and defoaming device includes: a stirring and defoaming mechanism and a vacuum pump. The stirring and defoaming mechanism includes a stirring tank, with a stirring sealing cover installed at the upper end of the stirring tank. A first suction valve and a second suction valve are installed inside the stirring sealing cover by bolts. A through-hole groove is opened inside the stirring sealing cover. The first suction valve and the second suction valve are connected and fixed to a first suction pipe and a second suction pipe by bolts. The first suction pipe and the second suction pipe are connected and fixed to the interior of the vacuum pump by bolts. A mounting plate is connected and fixed to the upper end of the stirring sealing cover by bolts. A first motor is connected and fixed to the upper end of the mounting plate by bolts. A stirring shaft is connected and fixed to the lower end of the first motor by bolts. The stirring shaft is installed inside the stirring tank, and spiral blades are connected and fixed to the outer side of the stirring shaft by welding.

[0008] Preferably, the upper end of the mixing tank is provided with a sealing ring plate, and the sealing ring plate is used to connect and fix the mixing sealing cover by bolts.

[0009] Preferably, the movable trough block is welded to the outside of the mixing tank, the movable trough block has a through hole inside, the movable trough block is connected and fixed by a through connection inside, the movable trough block is connected and fixed by a threaded bolt by welding, the threaded bolt is screwed in through the inside of the nut, the threaded bolt is mated in the groove of the connecting block, and the connecting block is fixed to the outside of the mixing sealing cover by welding.

[0010] Preferably, the mixing tank has a through hole on its outer side, and the feeding pipe is connected and fixed to the through hole of the mixing tank by welding. A rotating shaft is installed inside the feeding pipe, and the spiral blades are connected and fixed to the outer side of the rotating shaft by welding. One end of the rotating shaft is connected and fixed to the servo motor by bolts.

[0011] Preferably, the upper end of the feed pipe is provided with a through hole, and a vacuum mounting plate is installed in the through hole of the feed pipe. The vacuum mounting plate has a hollow internal structure, and a third vacuum valve is installed at the upper end of the vacuum mounting plate. The third vacuum valve is connected and fixed to the third vacuum pipe by bolts, and the third vacuum pipe is installed on the vacuum pump.

[0012] Preferably, the rotating shaft is connected through the interior of the first sealing plate and the second sealing plate. The first sealing plate is welded to fix one end of the feed pipe. The first sealing plate and the second sealing plate are connected and fixed by fixing bolts. A fixing block is installed at the lower end of the servo motor. The lower end of the fixing block is welded to fix the support plate. The lower end of the support plate is welded to fix the support leg.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) By utilizing the air extraction valve, air extraction pipe, vacuum pump, stirring shaft and spiral blades, the gas pressure is lower in a vacuum environment, and bubbles can be released from the liquid more easily. By using the vacuum pump to extract air, the formation of bubbles in aluminum nitride ceramic slurry can be effectively reduced or prevented. During the stirring process, the aluminum nitride ceramic slurry in the vacuum environment is more likely to remove bubbles, which helps to improve the density and uniformity of the material and can reduce the occurrence of bubbles in aluminum nitride ceramic slurry.

[0014] (2) By utilizing the suction installation plate, the third suction valve, and the third suction pipe, this utility model can ensure that there is no gas inside the mixing tank, reduce the bubbles generated when the aluminum nitride ceramic raw material is stirred into a slurry, reduce the formation of bubbles in the slurry, and ensure that the slurry has a more uniform and dense texture.

[0015] (3) This utility model utilizes a first sealing sheet and a second sealing sheet. The function of the sealing sheet is to prevent external gas from entering the inside of the feed pipe, thereby maintaining the vacuum state inside the pipe and effectively reducing the amount of gas entering the inside of the mixing tank from the feed pipe. Attached Figure Description

[0016] Figure 1 A first-view structural schematic diagram of the aluminum nitride ceramic slurry stirring and defoaming device provided by this utility model; Figure 2 A schematic diagram of the spiral blades and stirring shaft structure of the aluminum nitride ceramic slurry stirring and defoaming device provided by this utility model; Figure 3 A second-view structural schematic diagram of the aluminum nitride ceramic slurry stirring and defoaming device provided by this utility model; Figure 4 A schematic diagram of the spiral blades and rotating shaft structure of the aluminum nitride ceramic slurry stirring and defoaming device provided by this utility model; Figure 5 for Figure 3 Enlarged view of part B in the image; Figure 6 for Figure 3 Enlarged view of part A in the image; The corresponding names of the reference numerals in the attached drawings are as follows: 100, stirring and defoaming mechanism; 101, stirring sealing cover; 102, stirring tank; 103, first exhaust valve; 104, second exhaust valve; 105, first exhaust pipe; 106, second exhaust pipe; 107, support leg; 108, support plate; 109, fixing block; 110, servo motor; 111, first motor; 112, stirring shaft; 113, spiral blades; 114, sealing ring plate; 115, installation. Plate; 116. Feed pipe; 117. Support frame; 118. Feed inlet; 119. Vacuum mounting plate; 120. Third vacuum pipe; 121. Third vacuum valve; 122. Spiral blade; 123. Rotating shaft; 124. First sealing plate; 125. Second sealing plate; 126. Fixing bolt; 200. Fixing assembly; 201. Movable slot block; 202. Connecting fixing block; 203. Movable bolt; 204. Threaded bolt; 205. Nut; 300. Vacuum pump. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0018] First embodiment: like Figure 1-3The present invention provides an aluminum nitride ceramic slurry stirring and defoaming device, comprising: a stirring and defoaming mechanism 100 and a vacuum pump 300. The stirring and defoaming mechanism 100 includes a stirring tank 102, and a stirring sealing cover 101 is installed on the upper end of the stirring tank 102. A first exhaust valve 103 and a second exhaust valve 104 are bolted inside the stirring sealing cover 101. A through-hole groove is opened inside the stirring sealing cover 101. A first exhaust pipe 105 and a second exhaust pipe 104 are bolted inside the first exhaust valve 103 and the second exhaust valve 104. Pipe 106 is connected and fixed. The first suction pipe 105 and the second suction pipe 106 are bolted to the internal connection and fixation of the vacuum pump 300. The upper end of the stirring sealing cover 101 is bolted to the mounting plate 115. The upper end of the mounting plate 115 is bolted to the first motor 111. The lower end of the first motor 111 is bolted to the stirring shaft 112. The stirring shaft 112 is installed inside the stirring tank 102. The spiral blades 113 are welded to the outer side of the stirring shaft 112. In actual use, when the operator... When the aluminum nitride ceramic raw material is placed inside the mixing tank 102, the working principle of the vacuum pump 300 is mainly to extract the gas inside the container through different mechanical or physical methods, thereby creating a low-pressure or vacuum environment. Vacuum pumps 300 come in various types, including centrifugal pumps, rotary vane pumps, molecular pumps, and turbomolecular pumps. By driving the vacuum pump 300, and by opening the first extraction valve 103 and the second extraction valve 104, the gas inside the mixing tank 102 is further transported from the first extraction valve 103 to the first extraction valve 104. The gas inside the extraction pipe 105 and the second extraction pipe 106 is then discharged from the external environment of the mixing tank 102 by the vacuum pump 300. After that, the first motor 111 drives the stirring shaft 112 and the spiral blades 113 to rotate at high speed, or the rotation speed can be adjusted to slow speed. By evacuating the gas inside the mixing tank 102 to form a vacuum environment, the aluminum nitride ceramic slurry is stirred to prevent the formation of bubbles. The special structure of the stirring shaft 112 and the spiral blades 113 can reduce the formation of bubbles in the aluminum nitride ceramic slurry.

[0019] In this embodiment, by utilizing the evacuation valve, evacuation pipe, vacuum pump 300, stirring shaft 112, and spiral blades 113, the gas pressure is lower in a vacuum environment, and bubbles can be released from the liquid more easily. By evacuating the gas with the vacuum pump 300, the formation of bubbles in the aluminum nitride ceramic slurry can be effectively reduced or prevented. During the stirring process, the aluminum nitride ceramic slurry in the vacuum environment is more likely to expel bubbles, which helps to improve the density and uniformity of the material and can reduce the occurrence of bubbles in the aluminum nitride ceramic slurry.

[0020] Second embodiment: like Figure 3As shown, a sealing ring plate 114 is provided at the upper end of the mixing tank 102. The sealing ring plate 114 is connected and fixed to the mixing sealing cover 101 by bolts. The sealing ring plate 114 is usually made of elastic materials such as rubber or silicone. These materials have good sealing performance and can effectively prevent outside air or gas from entering the interior of the mixing tank 102. The sealing ring plate 114 can prevent outside gas from entering the interior of the mixing tank 102.

[0021] Third embodiment: like Figure 2 As shown, the movable slot block 201 is welded to the outside of the mixing tank 102. The movable slot block 201 has a through hole inside. The movable slot block 203 is connected through the movable slot block 201. The movable slot block 203 is connected and fixed to the threaded bolt 204 by welding. The threaded bolt 204 is screwed in the nut 205. The threaded bolt 204 is mated in the groove of the connecting fixing block 202. The connecting fixing block 202 is welded to the outside of the mixing sealing cover 101. By rotating the movable slot block 203 and the threaded bolt 204 inside the movable slot block 201, the threaded bolt 204 can be locked in the groove of the connecting fixing block 202. The nut 205 is tightened on the threaded bolt 204, further fixing the mixing sealing cover 101 above the mixing tank 102. This facilitates the installation and fixing of the mixing sealing cover 101 and reduces the entry of gas into the mixing tank 102.

[0022] Fourth embodiment: like Figure 1 , Figure 3-4 As shown, a through hole is provided on the outer side of the mixing tank 102. The feed pipe 116 is connected and fixed to the through hole of the mixing tank 102 by welding. A rotating shaft 123 is installed inside the feed pipe 116. The spiral blade 122 is connected and fixed to the outer side of the rotating shaft 123 by welding. One end of the rotating shaft 123 is connected and fixed to the servo motor 110 by bolts. When the servo motor 110 is driven, the rotating shaft 123 and the spiral blade 122 are further driven to rotate. The aluminum nitride ceramic raw material is transported into the mixing tank 102 by the rotation of the rotating shaft 123 and the spiral blade 122. The raw material is poured in through the feed port.

[0023] Fifth embodiment: like Figure 3As shown, a through hole is provided at the upper end of the feed pipe 116. The through hole of the feed pipe 116 is connected and fixed to the vacuum mounting plate 119 by bolts. The vacuum mounting plate 119 has a hollow structure inside. A third vacuum valve 121 is installed at the upper end of the vacuum mounting plate 119. The third vacuum valve 121 is connected and fixed to the third vacuum pipe 120 by bolts. The third vacuum pipe 120 is installed on the vacuum pump 300. When the operator places the aluminum nitride ceramic raw material particles into the feed pipe 116, the feed pipe 116 is sealed. By driving the vacuum pump 300 to run, the gas inside the feed pipe 116 is evacuated through the third vacuum pipe 120 and the third vacuum valve 121, which can ensure that there is no gas inside the mixing tank 102 and reduce the bubbles generated when the aluminum nitride ceramic raw material is mixed into a slurry.

[0024] In this embodiment, by utilizing the suction mounting plate 119, the third suction valve 121, and the third suction pipe 120, it can be ensured that there is no gas inside the mixing tank 102, thereby reducing the bubbles generated when the aluminum nitride ceramic raw material is stirred into a slurry, reducing the formation of bubbles in the slurry, and ensuring that the slurry has a more uniform and dense texture.

[0025] Sixth embodiment: like Figure 3 , Figure 5 As shown, the rotating shaft 123 is connected through the interior of the first sealing plate 124 and the second sealing plate 125. The first sealing plate 124 and the second sealing plate 125 are made of stainless steel, which has excellent corrosion resistance and mechanical strength and is often used to manufacture sealing parts. The first sealing plate 124 is welded to one end of the feed pipe 116. The feed pipe 116 can be sealed by the first sealing plate 124 and the second sealing plate 125, which can reduce the entry of external gas into the interior of the feed pipe 116 and keep the feed pipe 116 in a vacuum state. The first sealing plate 124 and the second sealing plate 125 are connected and fixed by the fixing bolt 126. The lower end of the servo motor 110 is equipped with a fixing block 109. The lower end of the fixing block 109 is welded to the support plate 108. The lower end of the support plate 108 is welded to the support leg 107.

[0026] In this embodiment, by utilizing the first sealing plate 124 and the second sealing plate 125, the function of the sealing plate is to prevent external gas from entering the inside of the feed pipe 116, thereby maintaining the vacuum state inside the pipe, which can effectively reduce the amount of gas entering the inside of the mixing tank 102 from the feed pipe 116.

[0027] In use, firstly, by driving the servo motor 110, the rotating shaft 123 and the spiral blade 122 are further rotated. The rotation of the rotating shaft 123 and the spiral blade 122 transports the aluminum nitride ceramic raw material into the mixing tank 102. The raw material is poured in through the feed port. When the operator places the aluminum nitride ceramic raw material into the mixing tank 102, the vacuum pump 300 is driven to run. By opening the first suction valve 103 and the second suction valve 104, the gas inside the mixing tank 102 is further transported from the first suction valve 103 and the second suction valve 104 to the first suction pipe. The gas is discharged from the inside of the mixing tank 102 through the vacuum pump 300, and then the stirring shaft 112 and the spiral blades 113 are driven by the first motor 111 to rotate at high speed, or the rotation speed can be adjusted to slow speed. When the worker puts the aluminum nitride ceramic raw material particles into the feeding pipe 116, the feeding pipe 116 is closed. The vacuum pump 300 is driven to run, and the gas inside the feeding pipe 116 is evacuated through the third suction pipe 120 and the third suction valve 121 to ensure that there is no gas inside the mixing tank 102.

[0028] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.

Claims

1. A device for stirring and defoaming aluminum nitride ceramic slurry, characterized in that, include: The stirring and defoaming mechanism (100) and vacuum pump (300) are included. The stirring and defoaming mechanism (100) includes a stirring tank (102). A stirring sealing cover (101) is installed on the upper end of the stirring tank (102). A first suction valve (103) and a second suction valve (104) are installed inside the stirring sealing cover (101) by bolts. A through-hole groove is opened inside the stirring sealing cover (101). The first suction valve (103) and the second suction valve (104) are connected and fixed to the first suction pipe (105) and the second suction pipe (106) by bolts. The first suction pipe (105) and the second suction pipe (106) are connected and fixed to the inside of the vacuum pump (300) by bolts. The upper end of the stirring sealing cover (101) is connected and fixed to the mounting plate (115) by bolts. The upper end of the mounting plate (115) is connected and fixed to the first motor (111) by bolts. The lower end of the first motor (111) is connected and fixed to the stirring shaft (112) by bolts. The stirring shaft (112) is installed inside the stirring tank (102). The spiral maple blade (113) is connected and fixed to the outside of the stirring shaft (112) by welding.

2. The aluminum nitride ceramic slurry stirring and defoaming device according to claim 1, characterized in that, The upper end of the mixing tank (102) is provided with a sealing ring plate (114), and the sealing ring plate (114) is used to connect and fix the mixing sealing cover (101) by bolts.

3. The aluminum nitride ceramic slurry stirring and defoaming device according to claim 2, characterized in that, The outer side of the mixing tank (102) is welded to a movable slot block (201). The movable slot block (201) has a through hole inside. The movable slot block (201) is connected and fixed to a movable bolt (203) through a through connection inside. The movable bolt (203) is connected and fixed to a threaded bolt (204) through welding. The threaded bolt (204) is screwed through the inside of a nut (205). The threaded bolt (204) is mated in the groove of the connecting block (202). The connecting block (202) is fixed to the outside of the mixing sealing cover (101) through welding.

4. The aluminum nitride ceramic slurry stirring and defoaming device according to claim 2, characterized in that, The mixing tank (102) has a through hole on its outer side. The through hole of the mixing tank (102) is connected and fixed to the feed pipe (116) by welding. The feed pipe (116) has a rotating shaft (123) installed inside. The rotating shaft (123) has a spiral blade (122) connected and fixed to its outer side by welding. One end of the rotating shaft (123) is connected and fixed to the servo motor (110) by bolts.

5. The aluminum nitride ceramic slurry stirring and defoaming device according to claim 4, characterized in that, The upper end of the feed pipe (116) is provided with a through hole, and a vacuum mounting plate (119) is installed in the through hole of the feed pipe (116). The vacuum mounting plate (119) has a hollow structure inside. A third vacuum valve (121) is installed at the upper end of the vacuum mounting plate (119). The third vacuum valve (121) is connected and fixed to the third vacuum pipe (120) by bolts. The third vacuum pipe (120) is installed on the vacuum pump (300).

6. The aluminum nitride ceramic slurry stirring and defoaming device according to claim 4, characterized in that, The rotating shaft (123) is connected through the interior of the first sealing plate (124) and the second sealing plate (125). The first sealing plate (124) is welded to one end of the feed pipe (116). The first sealing plate (124) and the second sealing plate (125) are connected and fixed by fixing bolts (126). The lower end of the servo motor (110) is equipped with a fixing block (109). The lower end of the fixing block (109) is welded to the support plate (108). The lower end of the support plate (108) is welded to the support leg (107).

Images