Observation window structure capable of being quickly disassembled and assembled

Abstract

The utility model relates to an observation window structure capable of realizing quick disassembly and assembly, which comprises a vacuum chamber connecting pipe and quartz glass, the quartz glass is arranged on the upper end face of an upper flange of the vacuum chamber connecting pipe, and a sealing rubber ring is arranged between the quartz glass and the upper flange. According to the technical scheme, the check ring is composed of a horizontal pressing ring located on the edge of the quartz glass and a vertical cylinder section wrapping the periphery of the quartz glass and the periphery of the upper flange, the outer side face of a transition section of the horizontal pressing ring and the vertical cylinder section is a first annular conical face with the narrow upper portion and the wide lower portion, and the lower end face of the upper flange is a second annular conical face with the wide upper portion and the narrow lower portion. A quick-release clamp is wound on the outer side of the check ring and the outer side of the upper flange, the quick-release clamp is composed of two clamp petals, one ends of the clamp petals are hinged together through a connecting piece, the other ends of the clamp petals are connected through a bolt pair, and the inner sides of the clamp petals are provided with third semi-annular conical surfaces attached to the first annular conical surfaces and fourth semi-annular conical surfaces attached to the second annular conical surfaces. According to the structure, the disassembly and assembly efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to an observation window for a vacuum furnace, in particular to an observation window structure which can be quickly disassembled and assembled. Background Art

[0002] In a vacuum environment, it is inevitable to use an observation window to monitor the production situation inside the vacuum container or transmit the light source, such as observing the temperature, the state of the material, etc. The observation window is very easy to be contaminated. For example, in a vacuum smelting furnace, the material and impurities often undergo a three-phase state change, and when the hot steam encounters the cold quartz glass, it will condense. It is also very easy to form a film layer on the glass in PVD equipment. When the equipment is in working condition, it can be simply handled by blowing and wiping. When the equipment is shut down, it needs to be disassembled and replaced, and then thoroughly cleaned.

[0003] However, the existing observation window has the following problems: the baffle, sealing ring and glass must be removed when disassembling, and then assembled after cleaning. When the observation window is used as a temperature measurement window, the external mechanism in the height direction of the observation window, namely the infrared temperature measurement mechanism, must also be removed before the observation window can be cleaned. The infrared temperature measurement mechanism needs to be re-debugged and focused, which increases the additional work of cleaning and leads to low disassembly and assembly efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide an observation window structure which solves the above problems, has a reasonable structure, is reliable in use and can be quickly disassembled and assembled, thereby significantly improving the disassembly and assembly efficiency.

[0005] The technical solution of the utility model is:

[0006] The invention discloses an observation window structure capable of realizing quick disassembly and assembly, comprising a vacuum chamber pipe and quartz glass, wherein the quartz glass is placed on the upper end face of the upper flange of the vacuum chamber pipe and a sealing rubber ring is arranged between the two, and a retaining ring is arranged on the edge of the upper surface of the quartz glass. The technical key points are as follows: the retaining ring is composed of a horizontal pressing ring located on the edge of the quartz glass and a vertical cylinder section wrapped around the outer periphery of the quartz glass and the upper flange, the outer side face of the transition section between the horizontal pressing ring and the vertical cylinder section is a first annular conical surface which is narrow at the top and wide at the bottom, the lower end face of the upper flange is a second annular conical surface which is wide at the top and narrow at the bottom, a quick-release clamp is wrapped around the outer side of the retaining ring and the upper flange, the quick-release clamp is composed of two hoop petals which are hinged together at one end by a connecting piece and connected at the other end by a bolt pair, and the inner side of the hoop petals is provided with a third semi-annular conical surface which fits with the first annular conical surface, and a fourth semi-annular conical surface which fits with the second annular conical surface.

[0007] The above-mentioned observation window structure capable of realizing quick disassembly and assembly, the upper end surface of the upper flange of the vacuum chamber connecting pipe is provided with a reduction groove corresponding to the quartz glass, the center line of the reduction groove coincides with the center line of the vacuum chamber connecting pipe, the bottom surface of the reduction groove is provided with an annular sealing groove corresponding to the sealing rubber ring, the center line of the annular sealing groove coincides with the center line of the vacuum chamber connecting pipe.

[0008] The above-mentioned observation window structure that can be quickly disassembled and assembled is provided with a through hole corresponding to the bolt of the bolt pair at the end of the hoop petal, and the tip of the bolt passes through the through holes of the two hoop petals and is connected to a horn-shaped locking nut.

[0009] In the above-mentioned observation window structure capable of realizing quick disassembly and assembly, the end of the hoop petal is provided with a U-shaped side notch corresponding to the bolt of the bolt pair, so as to facilitate the bolt of the bolt pair to be moved out of the U-shaped side notch.

[0010] The beneficial effects of the utility model are:

[0011] 1. When disassembly is required, loosen and remove the bolt pair, so that the third semi-annular cone surface and the fourth semi-annular cone surface of the two hoop petals of the quick-release clamp are separated from the retaining ring and the upper flange, and the retaining ring and the quartz glass are released. The retaining ring and the quartz glass can be removed in turn to clean the quartz glass. The disassembly is convenient and quick, and the disassembly and assembly efficiency is significantly improved.

[0012] 2. During assembly, the third semi-annular cone surface of the quick-release clamp cooperates with the first annular cone surface of the retaining ring, and the fourth semi-annular cone surface of the quick-release clamp cooperates with the second annular cone surface of the upper flange, so that automatic centering is achieved without the need for precise positioning, and assembly is convenient and quick, which significantly improves disassembly and assembly efficiency.

[0013] 3. When disassembling and assembling, no space is required for the wrench, and the space occupied is small. The observation window can be replaced and cleaned without disassembling the infrared temperature measuring mechanism in the height direction of the observation window, without additional work, which further improves the disassembly and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 yes Figure 1 AA section view.

[0016] In the figure: 1. Connector, 2. Hoop, 3. Horn-shaped locking nut, 4. Bolt, 5. Vacuum chamber pipe, 6. Horizontal pressure ring, 7. Vertical cylinder section, 8. First annular cone, 9. Sealing rubber ring, 10. Upper flange, 11. Second annular cone, 12. Quartz glass. DETAILED DESCRIPTION

[0017] The utility model is described in detail according to the accompanying drawings of the specification.

[0018] like Figure 1 , Figure 2 As shown, the observation window structure that can be quickly disassembled and assembled includes a vacuum chamber pipe 5 and a quartz glass 12. The quartz glass 12 is placed on the upper end surface of the upper flange 10 of the vacuum chamber pipe 5 and a sealing rubber ring 9 is provided between the two. A retaining ring is provided on the edge of the upper surface of the quartz glass 12.

[0019] The retaining ring is composed of a horizontal pressing ring 6 located on the edge of the quartz glass 12, and a vertical tube section 7 wrapped around the outer periphery of the quartz glass 12 and the upper flange 10. The outer side surface of the transition section between the horizontal pressing ring 6 and the vertical tube section 7 is a first annular cone 8 that is narrow at the top and wide at the bottom, and the lower end surface of the upper flange 10 is a second annular cone 11 that is wide at the top and narrow at the bottom. A quick-release clamp is wrapped around the outer side of the retaining ring and the upper flange 10, and the quick-release clamp is composed of two hoop petals 2 that are hinged together at one end by a connector 1 and connected at the other end by a bolt pair. The inner side of the hoop petal 2 is provided with a third semi-annular cone surface that fits the first annular cone surface 8, and a fourth semi-annular cone surface that fits the second annular cone surface 11.

[0020] In this embodiment, the upper end surface of the upper flange 10 of the vacuum chamber pipe 5 is provided with a reduction groove corresponding to the quartz glass 12, and the center line of the reduction groove coincides with the center line of the vacuum chamber pipe 5. The bottom surface of the reduction groove is provided with an annular sealing groove corresponding to the sealing rubber ring 9, and the center line of the annular sealing groove coincides with the center line of the vacuum chamber pipe 5. The end of the hoop petal 2 is provided with a through hole corresponding to the bolt 4 of the bolt pair, and the tip of the bolt 4 passes through the through holes of the two hoop petals 2 and is connected to the horn-shaped locking nut 3. The end of the hoop petal 2 is provided with a U-shaped side notch corresponding to the bolt 4 of the bolt pair, so as to facilitate the removal of the bolt 4 of the bolt pair from the U-shaped side notch.

[0021] When in use, loosen the horn-shaped locking nut 3 on the quick-release clamp, and remove the bolt pair through the U-shaped side notch, so as to release the restriction of the quick-release clamp on the retaining ring and the quartz glass 12, and remove the retaining ring and the quartz glass 12 in turn to clean the quartz glass 12.

[0022] After cleaning, reinstall the quartz glass 12 and the retaining ring, and then make the third semi-annular cone surface of the quick-release clamp cooperate with the first annular cone surface 8 of the retaining ring, and the fourth semi-annular cone surface of the quick-release clamp cooperate with the second annular cone surface 11 of the upper flange 10 to achieve automatic centering. Finally, press the bolt pair into the U-shaped side notch, and tighten the horn-shaped locking nut 3 to achieve locking and fixing of the two hoop petals 2.

[0023] The above embodiments of the present invention are described in detail, but the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. An observation window structure capable of rapid assembly and disassembly, comprising a vacuum chamber pipe and quartz glass, wherein the quartz glass is placed on the upper end surface of the upper flange of the vacuum chamber pipe and a sealing rubber ring is provided between the two, and a retaining ring is provided on the edge of the upper surface of the quartz glass, characterized in that: The retaining ring is composed of a horizontal pressure ring located on the edge of the quartz glass, and a vertical cylinder section wrapped around the outer periphery of the quartz glass and the upper flange. The outer side surface of the transition section between the horizontal pressure ring and the vertical cylinder section is a first annular cone surface that is narrow at the top and wide at the bottom. The lower end surface of the upper flange is a second annular cone surface that is wide at the top and narrow at the bottom. A quick-release clamp is wrapped around the outer side of the retaining ring and the upper flange. The quick-release clamp is composed of two hoop petals that are hinged together at one end by a connecting piece and connected at the other end by a bolt pair. The inner side of the hoop petal is provided with a third semi-annular cone surface that fits the first annular cone surface, and a fourth semi-annular cone surface that fits the second annular cone surface.

2. The observation window structure capable of rapid assembly and disassembly according to claim 1, characterized in that: The upper end surface of the upper flange of the vacuum chamber pipe is provided with a reduction groove corresponding to the quartz glass, and the center line of the reduction groove coincides with the center line of the vacuum chamber pipe. The bottom surface of the reduction groove is provided with an annular sealing groove corresponding to the sealing rubber ring, and the center line of the annular sealing groove coincides with the center line of the vacuum chamber pipe.

3. The observation window structure capable of rapid assembly and disassembly according to claim 1, characterized in that: The ends of the hoop petals are provided with through holes corresponding to the bolts of the bolt pair, and the tips of the bolts pass through the through holes of the two hoop petals and are connected with horn-shaped locking nuts.

4. The observation window structure capable of rapid assembly and disassembly according to claim 1, characterized in that: The end of the hoop petal is provided with a U-shaped side notch corresponding to the bolt of the bolt pair.

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