Vacuumizing device for dehydroxylation of quartz glass tube

Abstract

The utility model relates to the technical field of quartz glass tube processing, in particular to a vacuumizing device for dehydroxylation of a quartz glass tube. According to the technical scheme, the device comprises a box body, a conveying structure and a vacuumizing structure, and the conveying structure comprises a stroke frame, a conveying roller rotationally installed in the stroke frame, sliding blocks located at the two ends of the stroke frame, a motor located at the rear end of the box body, a nut located at the lower end of the stroke frame and a screw located at the output end of the motor and rotationally inserted into the nut; the vacuumizing structure comprises a suction pump, a suction pipe located at the input end of the suction pump, an adjusting valve installed in the upper end of the suction pipe in a penetrating mode, a valve block located in the adjusting valve, a spring located at the lower end of the valve block, a valve seat located at the lower end of the spring and a valve ring located above the valve block. The regulating valve is arranged in the suction pipe of the suction pump, when the negative pressure in the box body meets the requirement, the regulating valve is automatically opened, continuous suction in the box body is avoided, use of inspection instruments and control devices is reduced, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of quartz glass tube processing, in particular to a vacuum pumping device for dehydroxylation of a quartz glass tube. Background Art

[0002] Quartz glass tube is a glass tube made of quartz. It has high temperature resistance and chemical stability. It is widely used in laboratories, industries and scientific research fields. During the processing, dehydroxylation is required, which is the process of removing hydrogen from the quartz glass tube.

[0003] For the dehydroxylation of quartz glass tubes, a higher operating temperature will be selected to promote the removal of moisture and hydroxyl groups. It is necessary to treat at a temperature of 950-1100°C to promote the removal of moisture and hydroxyl groups inside the quartz glass tube. At the same time, a suitable suction device is used to extract the generated gas to ensure the dehydroxylation of the quartz glass tube. However, the vacuum structure cannot be adaptively adjusted during use, and it is often necessary to use a variety of inspection instruments and control devices to understand the vacuum of the suction space and adjust the suction structure, resulting in a lot of additional costs. For this reason, we propose a vacuum device for dehydroxylation of quartz glass tubes to solve the existing problems. Utility Model Content

[0004] The utility model aims to solve the problems existing in the background technology and proposes a vacuum pumping device for dehydroxylation of a quartz glass tube.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum pumping device for dehydroxylation of a quartz glass tube, comprising a box body, a conveying structure and a vacuum pumping structure, a box cover is rotatably installed at the front end of the box body, heating components are arranged inside the upper and lower ends of the box body, the conveying structure comprises a travel frame, a conveying roller rotatably installed inside the travel frame, sliders located at both ends of the travel frame, a motor located at the rear end of the box body, a nut located at the lower end of the travel frame, a screw located at the output end of the motor and rotatably plugged into the nut, the vacuum pumping structure comprises a suction pump, a suction pipe located at the input end of the suction pump and passing through the inside of the box body, a regulating valve installed inside the upper end of the suction pipe, a valve block located inside the regulating valve, a spring located at the lower end of the valve block, a valve seat located at the lower end of the spring, and a valve ring located above the valve block.

[0006] Preferably, the inner walls at both ends of the box body are provided with guide rails, and the slider is slidably mounted on the outer wall of the guide rail. The travel frame is slidably supported inside the box body by the slider.

[0007] Preferably, a travel block is provided at the upper end of the slider, and limit blocks are provided on the inner walls at both ends of the box body near the box body opening, and the limit blocks correspond to the travel block. When the slider drives the travel frame to move to the box opening, the limit blocks intercept the travel block to prevent the travel frame from completely leaving the guide rail.

[0008] Preferably, the conveying rollers are relatively distributed and in an inverted figure eight shape. The conveying rollers in the inverted figure eight shape roll and convey the quartz glass tube while guiding the quartz glass tube at the center.

[0009] Preferably, the travel frame is provided with equidistantly distributed through openings inside, which ensure that the heat of the heating component is transferred to the quartz glass tube through the travel frame.

[0010] Preferably, the screw is rotatably mounted with the box, a bearing bracket is provided on the inner wall of the lower end of the box near the box opening, and one end of the screw is rotatably mounted inside the bearing bracket. The screw is rotatably supported, and the rotation stability inside the box is improved.

[0011] Preferably, the valve ring and the valve seat are both hollow inside, and the sides are connected to the inside of the regulating valve, and the upper end of the valve block is inserted into the inside of the valve ring. The valve seat supports the spring, and the spring's own elastic force is inserted into the inside of the valve ring to close the regulating valve.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model heats the quartz glass tube through the heating component inside the box, and the hydrogen inside the quartz glass tube is separated from the quartz glass tube. The gas inside the box is sucked by the suction pump. When the negative pressure inside the box is removed and the gas is removed, the valve block inside the pressure regulating valve drops under the action of the suction force, and the valve ring opens. Because the valve block is supported by elasticity, when the air density inside the box is large, the negative pressure inside the box acts on the valve block, and the spring drives the valve block to shake up and down. The suction force of the suction pump acts on the outside through the regulating valve, and the gas from the outside entering the regulating valve is directly extracted through the suction pump to compensate for the suction inside the box. In the process of continuously generating gas inside the box due to the heating of the quartz glass tube, the suction force also acts on the inside of the box, and the suction pump operates continuously without the use of an electric regulating component. The regulating valve automatically adapts to the use of the suction pump, thereby avoiding a large negative pressure inside the box, thereby affecting the processing of the quartz glass tube, and the suction pump realizes adaptive regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0015] Figure 2 It is a top-sectional three-dimensional structural schematic diagram of the utility model;

[0016] Figure 3 It is a side sectional three-dimensional structural schematic diagram of the utility model;

[0017] Figure 4It is a schematic diagram of the main sectional three-dimensional structure of the regulating valve of the utility model.

[0018] Reference numerals: 100, box body; 101, box cover; 102, heating assembly;

[0019] 200, conveying structure; 201, travel frame; 202, conveying roller; 203, bearing bracket; 204, through port; 205, travel block; 206, limit block; 207, guide rail; 208, screw; 209, nut; 210, motor; 211, slider;

[0020] 300, vacuum pumping structure; 301, suction pump; 302, suction pipe; 303, regulating valve; 304, valve ring; 305, valve block; 306, spring; 307, valve seat. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-Figure 4 As shown, the vacuum pumping device for dehydroxylation of a quartz glass tube proposed in the utility model comprises a box body 100, a conveying structure 200 and a vacuum pumping structure 300, wherein the conveying structure 200 comprises a travel frame 201, a conveying roller 202 rotatably mounted inside the travel frame 201, sliders 211 located at both ends of the travel frame 201, a motor 210 located at the rear end of the box body 100, a nut 209 located at the lower end of the travel frame 201, and a screw 208 located at the output end of the motor 210 and rotatably plugged into the nut 209.

[0023] Guide rails 207 are provided on the inner walls at both ends of the box body 100 , and the sliders 211 are slidably mounted on the outer walls of the guide rails 207 .

[0024] A travel block 205 is disposed on the upper end of the slider 211, and both inner walls of the box body 100 are provided with limit blocks 206 near the opening of the box body 100, and the limit blocks 206 correspond to the travel block 205. The conveying rollers 202 are relatively distributed and in an inverted eight-shaped shape.

[0025] The travel frame 201 has openings 204 equidistantly distributed therein.

[0026] The screw rod 208 is rotatably mounted on the box body 100 . A bearing bracket 203 is provided on the inner wall of the lower end of the box body 100 near the opening of the box body 100 . One end of the screw rod 208 is rotatably mounted inside the bearing bracket 203 .

[0027] Based on the implementation steps of Example 1: the quartz glass tube is slidably placed on the conveying roller 202, and the quartz glass tube is guided at the center by the inverted eight-shaped conveying roller 202. The motor 210 drives the screw 208 to rotate, and pushes the guide nut 209, driving the travel frame 201 to enter the inside of the box 100. The travel frame 201 of the quartz glass tube supporting frame assembly is automatically moved, which reduces the work intensity, and the staff reduces the time at the opening of the box 100, reduces high-temperature baking, and improves the working environment.

[0028] like Figure 1-Figure 4 As shown, compared with the first embodiment, the vacuum pumping device for dehydroxylation of a quartz glass tube proposed by the utility model further includes: a box cover 101 is rotatably installed at the front end of the box body 100, heating components 102 are arranged inside the upper and lower ends of the box body 100, and the vacuum pumping structure 300 includes a suction pump 301, a suction pipe 302 located at the input end of the suction pump 301 and penetrating the interior of the box body 100, a regulating valve 303 installed inside the upper end of the suction pipe 302, a valve block 305 located inside the regulating valve 303, a spring 306 located at the lower end of the valve block 305, a valve seat 307 located at the lower end of the spring 306, and a valve ring 304 located above the valve block 305. The interiors of the valve ring 304 and the valve seat 307 are both hollow, and the sides are connected to the interior of the regulating valve 303, and the upper end of the valve block 305 is plugged into the interior of the valve ring 304.

[0029] In this embodiment, the box cover 101 closes the box body 100, the heating assembly 102 operates to heat the quartz glass tube inside the box body 100, and the suction pump 301 sucks the gas inside the box body 100 to create a vacuum environment, so that the air and other gases in the quartz glass tube are pumped out, and at the same time, the moisture and hydroxyl in the quartz glass tube are removed to ensure the purity and performance of the quartz glass tube in experiments or industrial uses;

[0030] When the negative pressure inside the box 100 reaches the required level, the suction force continues to act, and the negative pressure inside the box 100 acts on the valve block 305 through the suction pipe 302. The force on the spring 306 decreases, thereby opening the valve ring 304. With the new air supply, the suction pump 301 will no longer cause the negative pressure inside the box 100 to change. The outside air is output through the suction pump 301. After the processing environment of the quartz glass tube obtains the required vacuum degree, adaptive adjustment is achieved, reducing the use of vacuum pump control components, vacuum degree adjustment components and control equipment, and reducing the use cost.

[0031] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A vacuum pumping device for dehydroxylation of a quartz glass tube, comprising a housing (100), a conveying structure (200) and a vacuum pumping structure (300), characterized in that: The front end of the box body (100) is rotatably mounted with a box cover (101); the upper and lower ends of the box body (100) are internally provided with heating components (102); the conveying structure (200) comprises a travel frame (201), a conveying roller (202) rotatably mounted inside the travel frame (201), sliders (211) located at both ends of the travel frame (201), a motor (210) located at the rear end of the box body (100), a nut (209) located at the lower end of the travel frame (201), and a nut (209) located at the output end of the motor (210) and rotatably plugged into the nut. (209) has a screw (208) inside, and the vacuum pumping structure (300) includes a suction pump (301), a suction pipe (302) located at the input end of the suction pump (301) and passing through the inside of the box (100), a regulating valve (303) installed inside the upper end of the suction pipe (302), a valve block (305) located inside the regulating valve (303), a spring (306) located at the lower end of the valve block (305), a valve seat (307) located at the lower end of the spring (306), and a valve ring (304) located above the valve block (305).

2. The quartz glass tube dehydroxylation vacuum pump according to claim 1, characterized in that: Guide rails (207) are provided on the inner walls at both ends of the box body (100), and the sliding block (211) is slidably mounted on the outer wall of the guide rail (207).

3. The quartz glass tube dehydroxylation vacuum pump according to claim 1, characterized in that: A travel block (205) is arranged at the upper end of the sliding block (211), and both inner walls at both ends of the box body (100) are provided with limit blocks (206) close to the opening of the box body (100), and the limit blocks (206) correspond to the travel block (205).

4. The vacuum pumping device for dehydroxylation of a quartz glass tube according to claim 1, characterized in that: The conveying rollers (202) are relatively distributed and are in an inverted eight-shaped shape.

5. The vacuum pumping device for dehydroxylation of a quartz glass tube according to claim 1, characterized in that: The travel frame (201) is provided with openings (204) distributed at equal intervals.

6. The vacuum pumping device for dehydroxylation of a quartz glass tube according to claim 1, characterized in that: The screw rod (208) is rotatably mounted on the box body (100); a bearing bracket (203) is provided on the inner wall of the lower end of the box body (100) near the opening of the box body (100); and one end of the screw rod (208) is rotatably mounted inside the bearing bracket (203).

7. The vacuum pumping device for dehydroxylation of a quartz glass tube according to claim 1, characterized in that: The interiors of the valve ring (304) and the valve seat (307) are both hollow, and the sides are connected to the interior of the regulating valve (303). The upper end of the valve block (305) is inserted into the interior of the valve ring (304).

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