Groove sinking apparatus for a hollow quartz cylinder

Abstract

The utility model relates to hollow quartz cylinder processing device technical field discloses a groove sinking processing device of hollow quartz cylinder, including split type furnace body, is composed of upper furnace body and lower furnace body, the lower furnace body bottom is equipped with lifting device, can drive lower furnace body to lift and close with upper furnace body closed cavity, temperature control unit, locate in the closed cavity inner wall, be used for realizing gradient temperature control, temperature control precision is 1 DEG C, mould, through high temperature resistant support fixed in the cavity middle part, the mould bottom is connected with multichannel gas distribution system, the gas extraction system includes the gas extraction pipeline and the mechanical pump and roots pump connected in proper order, the gas extraction pipeline is linked with lower furnace body side wall intercommunication, can be with the cavity barometric pressure draws to 30mbar below's primary vacuum. In the utility model, adopt split type furnace body and precision temperature control, barometric pressure collaborative control, realize hollow quartz cylinder integration forming, save traditional craft's secondary processing and annealing step, promote material utilization, shorten production cycle.

Description

Technical Field

[0001] This utility model relates to the technical field of hollow quartz cylinder processing equipment, and in particular to a troughing processing equipment for hollow quartz cylinders. Background Technology

[0002] Hollow quartz cylinders exhibit excellent heat resistance in high-temperature environments and are widely used in optoelectronic, chemical, and laboratory fields. Their processing demands high precision and efficiency, especially in the production of large quantities of high-quality products. Using specialized processing equipment can significantly improve both production efficiency and precision.

[0003] Traditional hollow quartz tube processing equipment typically consists of a feeding system, processing equipment, and a control system. The feeding system is responsible for feeding the raw materials into the processing equipment, which performs cutting, grinding, and other processing. The control system adjusts the processing parameters and monitors the production process to ensure the smooth operation of each step.

[0004] Traditional hollow quartz cylinder processing equipment suffers from low material utilization, typically due to significant raw material cutting and waste generation during the process. The precision and processing methods of traditional equipment often fail to minimize waste, resulting in substantial waste of quartz material. This low material utilization not only increases production costs but also leads to resource waste, reduces overall production efficiency, and impacts the manufacturer's economic benefits and environmental goals. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a troughing processing device for hollow quartz cylinders, which aims to improve the problem of low material utilization rate in traditional hollow quartz cylinder processing devices, leading to resource waste and reduced overall production efficiency.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a groove sinking processing device for hollow quartz cylinders, comprising:

[0007] The split furnace body consists of an upper furnace body and a lower furnace body. The bottom of the lower furnace body is equipped with a lifting device, which can drive the lower furnace body to rise and fall and close with the upper furnace body to form a sealed cavity.

[0008] A temperature control unit is located on the inner wall of the sealed cavity to achieve gradient temperature control with a temperature control accuracy of ±1℃.

[0009] The mold is fixed in the middle of the cavity by a high-temperature resistant bracket, and the bottom of the mold is connected to a multi-channel gas distribution system;

[0010] The evacuation system includes an evacuation pipe and a mechanical pump and a Roots pump connected in sequence. The evacuation pipe is connected to the side wall of the lower furnace body and can evacuate the cavity pressure to a primary vacuum of less than 30 mbar, then evacuate to the working vacuum and maintain the pressure.

[0011] The gas pipeline system includes a forming gas pipeline and a protective gas pipeline, both of which are connected to the gas distribution system at the bottom of the mold. The forming gas pipeline is equipped with a precision pressure regulating device. The protective gas pipeline can be filled with gas up to a pressure of 980 mbar and then continue to be filled with gas up to the critical atmospheric pressure, and the gas intake control value is ≥30 SLMP.

[0012] As a further description of the above technical solution:

[0013] The lifting device for the lower furnace body is a hydraulic push rod, and a high-temperature resistant sealing gasket is provided at the joint between the upper and lower furnace bodies when closed.

[0014] As a further description of the above technical solution:

[0015] The temperature control unit uses a spirally arranged nickel-chromium alloy resistance strip, which is fixed by insulating ceramic. It can preset a gradient temperature curve and trigger the opening of the forming gas pipeline when the material reaches the quartz transformation temperature.

[0016] As a further description of the above technical solution:

[0017] The precision pressure regulating device of the forming gas pipeline forms a closed-loop control with the PLC control system, and the softening material undergoes plastic deformation by controlling the inlet pressure.

[0018] As a further description of the above technical solution:

[0019] The mold is made of high-purity graphite material, and its cavity shape is adapted to the finished hollow quartz cylinder.

[0020] As a further description of the above technical solution:

[0021] The protective gas pipeline is equipped with a flow control valve, which can introduce nitrogen or inert gas.

[0022] As a further description of the above technical solution:

[0023] The high-temperature resistant bracket is made of corundum, and the part in contact with the mold is provided with a heat insulation pad. The height of the bracket is adjustable.

[0024] As a further description of the above technical solution:

[0025] The PLC control system integrates a touch screen, which can preset and store temperature-pressure linkage parameters, and has fault alarm and emergency shutdown functions.

[0026] This utility model has the following beneficial effects:

[0027] 1. In this utility model, a split furnace body is first adopted in conjunction with precision temperature control and air pressure control to achieve integrated molding of hollow quartz cylinder, eliminating the secondary processing and annealing steps of traditional processes, improving material utilization and shortening the production cycle.

[0028] 2. In this utility model, there is no need to customize special molds. The PLC control system can preset parameters to adapt to different product specifications, reduce equipment investment, break through the limitations of traditional mass production processes, and improve production flexibility. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a troughing device for hollow quartz cylinders proposed in this utility model.

[0030] Legend:

[0031] 1. Upper furnace body; 2. Lower furnace body; 3. Temperature control unit; 4. Mold; 5. Air extraction pipe; 6. Forming gas pipe; 7. Protective gas pipe; 8. Top detection hole; 9. High-temperature resistant bracket; 10. PLC control system. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 One embodiment of this utility model provides: a groove sinking processing device for hollow quartz cylinders, comprising:

[0034] The split furnace body consists of an upper furnace body 1 and a lower furnace body 2. The bottom of the lower furnace body 2 is equipped with a lifting device, which can drive the lower furnace body 2 to rise and fall and close with the upper furnace body 1 to form a sealed cavity.

[0035] Temperature control unit 3 is located on the inner wall of the sealed cavity and is used to achieve gradient temperature control with a temperature control accuracy of ±1℃.

[0036] Mold 4 is fixed in the middle of the cavity by high temperature resistant bracket 9, and the bottom of mold 4 is connected to a multi-channel gas distribution system;

[0037] The evacuation system includes an evacuation pipe 5 and a mechanical pump and a Roots pump connected in sequence. The evacuation pipe 5 is connected to the side wall of the lower furnace body 2 and can evacuate the cavity pressure to a primary vacuum of less than 30 mbar, then evacuate to the working vacuum and maintain the pressure.

[0038] The gas pipeline system, including forming gas pipeline 6 and protective gas pipeline 7, is connected to the gas distribution system at the bottom of the mold 4. Forming gas pipeline 6 is equipped with a precision pressure regulating device. Protective gas pipeline 7 can be supplied with gas up to a pressure of 980 mbar and then continue to be pressurized to the critical atmospheric pressure, with an intake control value ≥30 SLMP. The lifting device for the lower furnace body 2 is a hydraulic push rod. When closed, a high-temperature resistant sealing gasket is provided at the joint between the upper furnace body 1 and the lower furnace body 2. The temperature control unit 3 uses a spirally arranged nickel-chromium alloy resistance band, fixed by insulating ceramic, and can preset a gradient temperature curve. When the material reaches the quartz transformation temperature... The molding gas pipeline 6 is triggered to open. The precision pressure regulating device of the molding gas pipeline 6 and the PLC control system 10 form a closed-loop control. By controlling the inlet pressure, the softened material undergoes plastic deformation. The mold 4 is made of high-purity graphite material, and its cavity shape is adapted to the hollow quartz cylinder finished product. The protective gas pipeline 7 is equipped with a flow control valve, which can introduce nitrogen or inert gas. The high-temperature resistant bracket 9 is made of corundum material, and the contact part with the mold 4 is equipped with a heat insulation pad. The height of the bracket is adjustable. The PLC control system 10 integrates a touch screen, which can preset and store temperature-pressure linkage parameters and has fault alarm and emergency shutdown functions.

[0039] Working principle: When the device is working, the lower furnace body 2 is first lowered by the lifting device at the bottom of the lower furnace body 2, and the mold 4 is sent in after being fixed by the high temperature resistant bracket 9. Then the upper furnace body 1 and the lower furnace body 2 are closed to form a sealed cavity. The air extraction system starts the mechanical pump and the Roots pump in sequence through the air extraction pipe 5, first pumping the cavity to a primary vacuum of less than 30 mbar, and then pumping to the working vacuum and holding pressure. Then the protective gas pipe 7 is filled with gas to 980 mbar and then continues to be filled to the critical atmospheric pressure, with the air intake control ≥30 SLMP. The temperature control unit 3 controls the temperature with an accuracy of ±1℃ according to the gradient temperature curve. When the material reaches the quartz transformation temperature, the precision pressure regulating device of the forming gas pipe 6 controls the air intake pressure, so that the softened material is plastically deformed to form a hollow structure. The entire process is controlled by the PLC control system 10 to control the operation of each component.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for troughing hollow quartz cylinders, characterized in that, include: The split furnace body consists of an upper furnace body (1) and a lower furnace body (2). The bottom of the lower furnace body (2) is equipped with a lifting device, which can drive the lower furnace body (2) to rise and fall and close with the upper furnace body (1) to form a sealed cavity. Temperature control unit (3) is located on the inner wall of the sealed cavity to achieve gradient temperature control with a temperature control accuracy of ±1℃; The mold (4) is fixed in the middle of the cavity by a high-temperature resistant bracket (9), and the bottom of the mold (4) is connected to a multi-channel gas distribution system; The extraction system includes an extraction pipe (5) and a mechanical pump and a Roots pump connected in sequence. The extraction pipe (5) is connected to the side wall of the lower furnace body (2) and can pump the cavity gas pressure to a primary vacuum of less than 30 mbar, and then pump it to the working vacuum and maintain the pressure. The gas pipeline system includes a forming gas pipeline (6) and a protective gas pipeline (7), both of which are connected to the gas distribution system at the bottom of the mold (4). The forming gas pipeline (6) is equipped with a precision pressure regulating device. The protective gas pipeline (7) can be filled with gas to a pressure value of 980 mbar and then continue to be filled to the critical atmospheric pressure, and the gas intake control value is ≥30 SLMP.

2. The sinking apparatus for hollow quartz cylinders according to claim 1, characterized in that: The lifting device of the lower furnace body (2) is a hydraulic push rod. When closed, a high-temperature resistant sealing gasket is provided at the joint between the upper furnace body (1) and the lower furnace body (2).

3. The sinking apparatus for hollow quartz cylinders according to claim 2, characterized in that: The temperature control unit (3) uses a spirally arranged nickel-chromium alloy resistance strip, which is fixed by insulating ceramic. It can preset a gradient temperature curve and trigger the opening of the forming gas pipe (6) when the material reaches the quartz transformation temperature.

4. The sinking apparatus for hollow quartz cylinders according to claim 3, characterized in that: The precision pressure regulating device of the forming gas pipe (6) and the PLC control system (10) form a closed-loop control, and the softening material undergoes plastic deformation by controlling the inlet pressure.

5. The sinking apparatus for hollow quartz cylinders according to claim 4, characterized in that: The mold (4) is made of high-purity graphite material, and the cavity shape is compatible with the finished hollow quartz cylinder.

6. The sinking apparatus for hollow quartz cylinders according to claim 5, characterized in that: The protective gas pipeline (7) is equipped with a flow control valve, which can be used to introduce nitrogen or inert gas.

7. The sinking apparatus for hollow quartz cylinders according to claim 6, characterized in that: The high-temperature resistant bracket (9) is made of corundum, and a heat insulation pad is provided at the contact part with the mold (4). The height of the bracket is adjustable.

8. The sinking apparatus for hollow quartz cylinders according to claim 7, characterized in that: The PLC control system (10) integrates a touch screen, which can preset and store temperature-pressure linkage parameters and has fault alarm and emergency shutdown functions.

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