High-purity white corundum sintering sealing cavity capable of preventing impurities from being mixed

Abstract

The utility model relates to the technical field of white corundum sintering processing, in particular to a high-purity white corundum sintering sealing cavity capable of preventing impurity mixing, which comprises a high-temperature heating furnace for white corundum sintering, a door opening is arranged on the front side of the high-temperature heating furnace, a sealing door is arranged on the inner side of the door opening, and a sealing component is arranged on the side edge of the sealing door; the sealing assembly comprises a rubber sealing pipe, a mounting groove is formed in the periphery of the sealing door, the rubber sealing pipe is mounted on the inner side of the mounting groove, the outer side of the rubber sealing pipe is communicated with an outer cooling water pipe, and the outer cooling water pipe is communicated with a circulating water pump and a variable volume cylinder. By means of the sealing assembly, when the upper sealing door is closed, the electric push rod is started to drive the valve plate to compress the internal volume of the variable-volume cylinder, the volume of a water body is a fixed value, then the volume of the rubber sealing pipe expands outwards, the sealing rubber pipe abuts against the door opening, and the lateral abutting sealing effect on the sealing door is achieved; dust is prevented from entering the high-temperature heating furnace.

Description

Technical Field

[0001] This utility model relates to the field of white fused alumina sintering processing technology, and in particular to a high-purity white fused alumina sintering sealing cavity that prevents impurities from entering. Background Technology

[0002] White fused alumina is a synthetic abrasive with advantages such as high hardness, wear resistance, and corrosion resistance. It is widely used in abrasives, cutting tools, ceramics, and other fields.

[0003] White fused alumina, as a high-performance artificial abrasive and refractory material, is widely used in many industries such as ceramics, chemicals, and electronics. During its sintering preparation process, strict environmental control is required to prevent the ingress of impurities, otherwise the performance of the product will be significantly affected. However, existing sintering cavities often have insufficient sealing performance, which can easily lead to the entry of external impurities into the cavity, thereby reducing the purity and quality of white fused alumina. To improve the purity and quality of white fused alumina, we propose a high-purity white fused alumina sintering sealing cavity that prevents the ingress of impurities. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-purity white corundum sintered sealing cavity that prevents impurities from entering.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-purity white fused alumina sintering sealing cavity to prevent impurities from entering includes a high-temperature heating furnace for white fused alumina sintering. A doorway is provided on the front side of the high-temperature heating furnace, and a sealing door is provided inside the doorway. A sealing assembly is provided on the side of the sealing door. The sealing assembly includes a rubber sealing tube. An installation groove is provided around the sealing door, and the rubber sealing tube is installed inside the installation groove. An external cooling water pipe is connected to the outside of the rubber sealing tube. A circulating water pump and a variable displacement cylinder are connected to the external cooling water pipe. A valve plate is slidably installed on the inner wall of the variable displacement cylinder. An electric push rod is fixedly installed on the outside of the variable displacement cylinder. The output end of the electric push rod slides through to the inside of the variable displacement cylinder and is fixedly connected to the valve plate. The valve plate is slidably connected to the inner wall of the variable displacement cylinder.

[0007] Furthermore, a temperature sensor is fixedly installed on the inner wall of the high-temperature heating furnace, and a pressure gauge is fixedly installed on the outer wall of the high-temperature heating furnace.

[0008] Furthermore, a controller is fixedly installed on the outer wall of the high-temperature heating furnace.

[0009] Furthermore, an exhaust pipe is connected and installed on the upper side of the high-temperature heating furnace, and a pressure relief solenoid valve is fixedly installed on the exhaust pipe.

[0010] Furthermore, a lateral connector is fixedly installed on the side of the sealing door, a rotating shaft is rotatably installed on the lateral connector, and fixed seats are symmetrically fixedly installed on the upper and lower sides of the rotating shaft, and the fixed seats are fixedly installed on the side wall of the high-temperature heating furnace.

[0011] Furthermore, a handle is fixedly installed on the outer wall of the sealed door, and a vacuum layer is provided inside the sealed door.

[0012] Furthermore, an installation side plate is fixedly installed on the outer wall of the sealing door, and the external cooling water pipe, circulating water pump and variable displacement cylinder are all fixedly installed on the side wall of the installation side plate.

[0013] Compared with related technologies, the high-purity white corundum sintered sealing cavity for preventing impurities from entering proposed in this utility model has the following beneficial effects:

[0014] In this invention, a high-purity white corundum sintered sealing cavity designed to prevent impurities from entering is constructed using a sealing assembly. Within this assembly is a rubber sealing tube, positioned inside a mounting groove around the sealing door. When the sealing door is closed, an electric push rod is activated, causing a valve plate to compress the internal volume of the variable-capacity cylinder. Since the water volume is constant, the rubber sealing tube expands outwards, abutting against the door opening, thus achieving a lateral sealing effect and preventing dust from entering the high-temperature furnace. When the circulating water pump is activated, water circulates between the external cooling water pipe and the rubber sealing tube, dissipating heat from the tube. Because the boiling point of water is constant, the rubber sealing tube is not burned due to the high temperature inside the furnace. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a high-purity white corundum sintered sealing cavity for preventing impurities from entering, as proposed in this utility model. Figure 1 ;

[0016] Figure 2 A three-dimensional structural diagram of a high-purity white corundum sintered sealing cavity for preventing impurities from entering, as proposed in this utility model. Figure 2 ;

[0017] Figure 3 This is a three-dimensional structural diagram of a sealed door;

[0018] Figure 4 A three-dimensional disassembly diagram of a sealed door;

[0019] Figure 5 This is a three-dimensional structural diagram of the sealing assembly.

[0020] In the diagram: 1. High-temperature heating furnace; 2. Exhaust pipe; 3. Pressure relief solenoid valve; 4. Controller; 5. Pressure gauge; 6. Doorway; 7. Sealing door; 71. Mounting groove; 72. Lateral connector; 73. Rotating shaft; 74. Fixing base; 75. Handle; 8. Sealing assembly; 81. Rubber sealing tube; 82. Mounting side plate; 83. External cooling water pipe; 84. Circulating water pump; 85. Variable volume cylinder; 86. Electric push rod; 87. Valve plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Reference Figures 1-5 A high-purity white fused alumina sintering sealing cavity to prevent impurities from entering includes a high-temperature heating furnace 1 for white fused alumina sintering. A doorway 6 is provided on the front side of the high-temperature heating furnace 1, and a sealing door 7 is provided inside the doorway 6. A sealing assembly 8 is provided on the side of the sealing door 7. The sealing assembly 8 includes a rubber sealing tube 81. An installation groove 71 is provided around the sealing door 7. The rubber sealing tube 81 is installed inside the installation groove 71. An external cooling water pipe 83 is connected to the outside of the rubber sealing tube 81. A circulating water pump 84 and a variable displacement cylinder 85 are connected to the external cooling water pipe 83. A valve plate 87 is slidably installed on the inner wall of the variable displacement cylinder 85. An electric push rod 86 is fixedly installed on the outside of the variable displacement cylinder 85. The output end of the electric push rod 86 slides through to the inside of the variable displacement cylinder 85 and is fixedly connected to the valve plate 87. The valve plate 87 is slidably connected to the inner wall of the variable displacement cylinder 85.

[0023] With the above setup, when the high-temperature heating furnace 1 is started, it generates high temperature inside to sinter the white alumina. When the sealing door 7 inside the doorway 6 is opened, the white alumina production raw materials can be added through the doorway 6.

[0024] In this method, a lateral connector 72 is fixedly installed on the side of the sealing door 7, a rotating shaft 73 is rotatably installed on the lateral connector 72, and a fixing seat 74 is symmetrically fixedly installed on the upper and lower sides of the rotating shaft 73. The fixing seat 74 is fixedly installed on the side wall of the high-temperature heating furnace 1.

[0025] By setting it up in the above manner, the sealing door 7 can be rotated on the side of the door opening 6 via the pivot 73, so that the sealing door 7 can be rotated and opened.

[0026] In this method, a handle 75 is fixedly installed on the outer wall of the sealed door 7, and a vacuum layer is provided inside the sealed door 7.

[0027] By setting it up in the above manner, the vacuum layer enables the sealing door 7 to have heat insulation properties, thereby preventing the heat inside the high-temperature heating furnace 1 from dissipating to the outside through the sealing door 7.

[0028] In this method, an installation side plate 82 is fixedly installed on the outer wall of the sealing door 7, and the external cooling water pipe 83, the circulating water pump 84 and the variable volume cylinder 85 are all fixedly installed on the side wall of the installation side plate 82.

[0029] With the above-described configuration, the mounting side plate 82 provides a fixed mounting surface for the external cooling water pipe 83, the circulating water pump 84, and the variable displacement cylinder 85.

[0030] In this method, a temperature sensor is fixedly installed on the inner wall of the high-temperature heating furnace 1, a pressure gauge 5 is fixedly installed on the outer wall of the high-temperature heating furnace 1, and a controller 4 is fixedly installed on the outer wall of the high-temperature heating furnace 1.

[0031] With the above settings, the pressure gauge 5 is used to monitor the pressure value inside the high-temperature heating furnace 1, and the controller 4 is used to control the working status of the high-temperature heating furnace 1.

[0032] In this method, an exhaust pipe 2 is connected and installed on the upper side of the high-temperature heating furnace 1, and a pressure relief solenoid valve 3 is fixedly installed on the exhaust pipe 2.

[0033] With the above settings, when the pressure gauge 5 detects that the pressure inside the high-temperature heating furnace 1 exceeds the limit, the controller 4 will actively control the pressure relief solenoid valve 3 to open and perform active pressure relief.

[0034] The working principle of the high-purity white corundum sintering sealing cavity for preventing impurities from entering, provided by this utility model, is as follows:

[0035] In operation, the high-purity white corundum raw material to be sintered is placed into the high-temperature heating furnace 1 through the doorway 6. After the raw material is placed, the sealing door 7 is closed, allowing it to return to the inside of the doorway 6, initially preventing external impurities from entering. The electric push rod 86 is activated, and its output end pushes the valve plate 87 to slide against the inner wall of the variable displacement cylinder 85, compressing its internal volume. Since the water volume in the external cooling water pipe 83 and the rubber sealing pipe 81 is constant, when the volume of the variable displacement cylinder 85 decreases, the pressure is transmitted to the rubber sealing pipe 81, causing it to expand outwards. The expanded rubber sealing pipe 81 tightly abuts against the edge of the doorway 6, forming the first line of tight sealing, effectively preventing dust and other external impurities from entering the high-temperature heating furnace 1 through the gap between the sealing door 7 and the doorway 6. The circulating water pump 84 is then turned on, and water begins to circulate inside the external cooling water pipe 83 and the rubber sealing pipe 81. The high-temperature heating furnace 1 generates a large amount of heat during operation. The rubber sealing pipe 81, being close to the inside of the high-temperature heating furnace 1, is easily affected by the high temperature. The water continuously carries away the heat absorbed by the rubber sealing tube 81. Since the boiling point of water is relatively stable, under normal working conditions, the rubber sealing tube 81 will not be burned by the high temperature inside the high-temperature heating furnace 1, and will always maintain good sealing performance. The high-temperature heating furnace 1 starts to sinter the white fused alumina raw material. The temperature sensor installed on the inner wall of the high-temperature heating furnace 1 monitors the temperature inside the furnace in real time and feeds the temperature data back to the controller 4. At the same time, the pressure gauge 5 monitors the pressure inside the high-temperature heating furnace 1 in real time and displays the data on the outside of the furnace. If the pressure gauge 5 detects that the pressure inside the furnace exceeds the set safety threshold, the controller 4 will immediately control the pressure relief solenoid valve 3 to open, and discharge some of the gas inside the high-temperature heating furnace 1 through the exhaust pipe 2 to actively relieve pressure and ensure that the sintering process is carried out in a safe pressure environment. Throughout the sintering process, the controller 4 accurately controls the working state of the high-temperature heating furnace 1 according to the preset sintering program and the real-time monitoring data to ensure that the white fused alumina raw material is sintered under stable and suitable temperature and pressure conditions.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-purity white corundum sintered sealing cavity for preventing impurities from entering, characterized in that, The furnace includes a high-temperature heating furnace (1) for sintering white corundum. The high-temperature heating furnace (1) has a door opening (6) on the front side, a sealing door (7) is provided inside the door opening (6), and a sealing component (8) is provided on the side of the sealing door (7). The sealing assembly (8) includes a rubber sealing tube (81). The sealing door (7) has an installation groove (71) around its perimeter. The rubber sealing tube (81) is installed inside the installation groove (71). An external cooling water pipe (83) is connected to the outside of the rubber sealing tube (81). A circulating water pump (84) and a variable displacement cylinder (85) are connected to the external cooling water pipe (83). A valve plate (87) is slidably installed on the inner wall of the variable displacement cylinder (85). An electric push rod (86) is fixedly installed on the outside of the variable displacement cylinder (85). The output end of the electric push rod (86) slides through to the inside of the variable displacement cylinder (85) and the output end of the electric push rod (86) is fixedly connected to the valve plate (87). The valve plate (87) is slidably connected to the inner wall of the variable displacement cylinder (85).

2. The high-purity white corundum sintered sealing cavity for preventing impurities from entering, as described in claim 1, is characterized in that... A temperature sensor is fixedly installed on the inner wall of the high-temperature heating furnace (1), and a pressure gauge (5) is fixedly installed on the outer wall of the high-temperature heating furnace (1).

3. The high-purity white corundum sintered sealing cavity for preventing impurities from entering, as described in claim 1, is characterized in that... A controller (4) is fixedly installed on the outer wall of the high-temperature heating furnace (1).

4. The high-purity white corundum sintered sealing cavity for preventing impurities from entering, as described in claim 1, is characterized in that... The high-temperature heating furnace (1) is connected to an exhaust pipe (2) on its upper side, and a pressure relief solenoid valve (3) is fixedly installed on the exhaust pipe (2).

5. The high-purity white corundum sintered sealing cavity for preventing impurities from entering, as described in claim 1, is characterized in that... A lateral connector (72) is fixedly installed on the side of the sealing door (7). A rotating shaft (73) is rotatably installed on the lateral connector (72). A fixed seat (74) is symmetrically fixed on the upper and lower sides of the rotating shaft (73). The fixed seat (74) is fixedly installed on the side wall of the high-temperature heating furnace (1).

6. The high-purity white corundum sintered sealing cavity for preventing impurities from entering, as described in claim 1, is characterized in that... A handle (75) is fixedly installed on the outer wall of the sealed door (7), and a vacuum layer is provided inside the sealed door (7).

7. The high-purity white corundum sintered sealing cavity for preventing impurities from entering, as described in claim 1, is characterized in that... An installation side plate (82) is fixedly installed on the outer wall of the sealing door (7), and the external cooling water pipe (83), circulating water pump (84) and variable volume cylinder (85) are all fixedly installed on the side wall of the installation side plate (82).

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