Vacuum furnace heat preservation structure

Abstract

The utility model discloses a heat preservation structure of a vacuum furnace, and relates to the technical field of vacuum furnaces. The heat preservation sleeve comprises an outer sleeve, an inner sleeve and a heat preservation sleeve plate, the heat preservation sleeve plate is arranged in the outer sleeve, the inner sleeve is attached to the inner wall of the heat preservation sleeve plate, a fixing assembly attached to the outer surface of the heat preservation sleeve plate is arranged in the outer sleeve, and a rotatable rotation limiting mechanism is arranged in the outer sleeve. The rotation limiting mechanism is connected with the fixing assembly, and a driving mechanism for driving the rotation limiting mechanism to rotate is arranged on the outer side of the outer sleeve. The electric push rod pushes the connecting plate to move, the connecting plate drives the limiting push block on the limiting ring to rotate, the limiting push block makes contact with the interior of the fixed clamping block, and along with rotation of the rotary limiting mechanism, the fixed clamping block is pushed to be close to the axis of the outer sleeve along the surface of the fixed clamping block till the fixed clamping block is attached to the surface of the heat preservation sleeve plate. And rapid fixation is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum furnaces, in particular to a vacuum furnace insulation structure. Background Art

[0002] A vacuum furnace is a device that uses a vacuum system to discharge the gas in the furnace cavity to form a vacuum state in the furnace cavity, and heats the workpiece inside the furnace cavity. The Chinese patent with publication number CN215893229U discloses a vacuum furnace insulation structure for reaction sintering silicon carbide products, including a base, the lower end outer surface of the base is fixedly mounted with support columns near the four corners, the upper end of the base is provided with a plurality of detachable insulation boards, and the rear end of the detachable insulation board is provided with a sound insulation structure.

[0003] With regard to this disclosed technology, the connection and fixation between the insulation structures is rather complicated and needs to be aligned one by one, which makes it difficult to ensure the stability of the connection between the components. During the installation process and the disassembly and maintenance process, the workload of the staff is increased and the use is relatively inconvenient. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a vacuum furnace insulation structure.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions: a vacuum furnace insulation structure, comprising an outer sleeve, an inner sleeve and an insulation sleeve plate, the insulation sleeve plate is arranged inside the outer sleeve, the inner sleeve fits the inner wall of the insulation sleeve plate, the interior of the outer sleeve is provided with a fixing component that fits the outer surface of the insulation sleeve plate, the interior of the outer sleeve is provided with a rotatable rotation limiting mechanism, and the rotation limiting mechanism is connected to the fixing component, and the outer side of the outer sleeve is provided with a driving mechanism that drives the rotation limiting mechanism to rotate.

[0006] The thermal insulation cover plate is composed of two groups of upper and lower composite insulation plates, and the two groups of composite insulation plates are clamped together.

[0007] The fixing assembly includes a fixing clamp block, side panels are fixedly installed on the front and rear sides of the fixing clamp block, a guide slide rod is slidably installed on the surface of the side plate, a baffle is fixedly installed on one end of the guide slide rod, and the other end of the guide slide rod is fixedly connected to the inner wall of the outer sleeve, a spring is fixedly installed on the surface of the side plate, and the free end of the spring is fixedly connected to the inner wall of the outer sleeve.

[0008] There are multiple groups of fixing components, and the multiple groups of fixing components are arranged in a circular array inside the outer sleeve. An inclined groove is opened inside the fixing clamp block, and the fixing clamp block and the insulation sleeve plate are arranged correspondingly.

[0009] The rotation limiting mechanism comprises a limiting ring, a limiting push block is fixedly installed on the inner wall of the limiting ring, a connecting plate is fixedly installed on the outer side of the limiting ring, through grooves are opened on the left and right sides of the outer sleeve, and the connecting plate is slidably installed inside the through grooves.

[0010] The number of the limit push blocks is multiple groups, and the multiple groups of limit push blocks are arranged in a circular array inside the limit ring. The sizes of the two ends of the limit push blocks gradually change from small to large, and are arranged corresponding to the inclined grooves of the fixed clamping blocks. The limit push blocks are fitted with the inside of the fixed clamping blocks.

[0011] The driving mechanism comprises an electric push rod, and two ends of the electric push rod are provided with rotation connecting pieces. The electric push rod is rotationally connected to the surface of the outer sleeve and the surface of the rotation limiting mechanism respectively through the rotation connecting pieces.

[0012] The beneficial effects of the utility model are as follows:

[0013] The utility model uses an electric push rod to push the connecting plate to move, and the connecting plate drives the limiting push block on the limiting ring to rotate. The limiting push block contacts the inside of the fixed clamp block, and as the rotating limiting mechanism rotates, the fixed clamp block is pushed along the surface of the fixed clamp block to approach the axis center of the outer sleeve until the fixed clamp block fits the surface of the thermal insulation sleeve plate to fix it quickly. When the thermal insulation sleeve plate needs to be installed, repaired or replaced, the thermal insulation structure can be installed and fixed quickly and stably, reducing the workload of the staff and being able to limit and fix fixed components of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0016] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 4 It is a first partial cross-sectional schematic diagram of the utility model;

[0018] Figure 5 It is a schematic diagram of the second partial structure of the utility model;

[0019] Figure 6 It is a schematic diagram of the third partial structure of the utility model.

[0020] Figure numerals: 1. outer sleeve; 2. inner sleeve; 3. insulation sleeve; 4. fixing assembly; 401. fixing clamp; 402. side plate; 403. guide slide rod; 404. spring; 5. rotation limit mechanism; 501. limit ring; 502. limit push block; 503. connecting plate; 6. driving mechanism; 601. electric push rod; 602. rotating connecting piece. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0022] like Figure 1-Figure 6 As shown, a vacuum furnace insulation structure comprises an outer sleeve 1, an inner sleeve 2 and an insulation sleeve plate 3, the insulation sleeve plate 3 is arranged inside the outer sleeve 1, the inner sleeve 2 fits the inner wall of the insulation sleeve plate 3, a fixing component 4 fitting the outer surface of the insulation sleeve plate 3 is arranged inside the outer sleeve 1, a rotatable rotation limiting mechanism 5 is arranged inside the outer sleeve 1, and the rotation limiting mechanism 5 is connected to the fixing component 4, and a driving mechanism 6 driving the rotation limiting mechanism 5 to rotate is arranged on the outside of the outer sleeve 1; specifically, the rotation limiting mechanism 5 is pushed by the driving mechanism 6 to fit the inner wall of the outer sleeve 1 for rotation, so that the protrusion inside the rotation limiting mechanism 5 contacts the inside of the fixing component 4, and as the rotation limiting mechanism 5 rotates, the fixing component 4 is pushed to move closer to the axis center of the outer sleeve 1 until the fixing component 4 fits the surface of the insulation sleeve plate 3, so that it is quickly fixed, and when the insulation sleeve plate 3 needs to be installed, repaired or replaced, the work efficiency is improved, the workload of the construction personnel is reduced, and the fixing components 4 of different thicknesses can be limited and fixed.

[0023] The insulation sleeve 3 is composed of two sets of upper and lower composite insulation boards, and the two sets of composite insulation boards are snap-connected; specifically, the composite insulation boards prevent the heat in the inner sleeve 2 from propagating outward, thereby insulating the space in the furnace.

[0024] The fixing assembly 4 includes a fixing clamp 401, and side plates 402 are fixedly installed on the front and rear sides of the fixing clamp 401, and a guide slide rod 403 is slidably inserted on the surface of the side plate 402, and a baffle is fixedly installed on one end of the guide slide rod 403, and the other end of the guide slide rod 403 is fixedly connected to the inner wall of the outer sleeve 1, and a spring 404 is fixedly installed on the surface of the side plate 402, and the free end of the spring 404 is fixedly connected to the inner wall of the outer sleeve 1; specifically, the moving path of the fixing clamp 401 is guided by the guide slide rod 403 so that it moves along the axis of the outer sleeve 1 perpendicular to the outer sleeve 1, and the fixing clamp 401 is pulled away from the axis of the outer sleeve 1 by the spring 404, so as to facilitate the installation, disassembly and other operations of the thermal insulation structure, and the fixing clamp 401 is attached to the surface of the thermal insulation sleeve 3, so as to quickly limit and fix the thermal insulation sleeve 3, so as to facilitate its installation, disassembly and maintenance.

[0025] There are multiple groups of fixing components 4, and the multiple groups of fixing components 4 are arranged in a circular array inside the outer sleeve 1. An inclined groove is opened inside the fixing clamp 401, and the fixing clamp 401 is corresponding to the insulation sleeve 3. Specifically, multiple groups of fixing components 4 are used to apply force evenly to the surface of the insulation sleeve 3 to make its installation more stable. Through the inclined groove in the fixing clamp 401, the fixing component 4 can gradually approach the axis of the outer sleeve 1 as the rotation limit mechanism 5 rotates.

[0026] The rotation limit mechanism 5 includes a limit ring 501, the inner wall of the limit ring 501 is fixedly installed with a limit push block 502, the outer side of the limit ring 501 is fixedly installed with a connecting plate 503, the left and right sides of the outer sleeve 1 are provided with through grooves, and the connecting plate 503 is slidably installed inside the through grooves; specifically, by pushing the connecting plate 503 to slide in the through grooves, the limit ring 501 is driven to slide inside the outer sleeve 1, so that the limit push block 502 on the limit ring 501 contacts the fixed component 4, pushing it to clamp and fix the insulation sleeve 3.

[0027] There are multiple groups of limit push blocks 502, and the multiple groups of limit push blocks 502 are arranged in a circular array inside the limit ring 501. The sizes of the two ends of the limit push blocks 502 gradually change from small to large, and are corresponding to the inclined grooves of the fixed clamping block 401. The limit push blocks 502 are fitted with the interior of the fixed clamping block 401; specifically, the limit push blocks 502 are rotated and inserted into the interior of the fixed clamping block 401, thereby gradually pushing the fixed clamping block 401 to move toward the axis of the outer sleeve 1.

[0028] The driving mechanism 6 includes an electric push rod 601, and rotating connecting members 602 are provided at both ends of the electric push rod 601. The electric push rod 601 is rotationally connected to the surface of the outer sleeve 1 and the surface of the rotating limit mechanism 5 respectively through the rotating connecting members 602; specifically, the electric push rod 601 pushes the connecting plate 503 to move, thereby controlling the rotating limit mechanism 5 to drive the fixing component 4 to clamp and fix the thermal insulation sleeve 3, and the rotating connecting member 602 makes the connection points at both ends of the electric push rod 601 able to rotate, thereby ensuring that the telescopic movement of the electric push rod 601 drives the rotating limit mechanism 5 to rotate.

[0029] In summary, when the utility model is used, when the staff installs the insulation structure inside the vacuum furnace, they stack the insulation sleeve 3 according to the required number of layers, connect them and put them into the inner part of the outer sleeve 1, so that the fixed clamping block 401 contacts the surface of the insulation sleeve 3, drive the electric push rod 601 to extend and retract, and push the connecting plate 503 to slide inside the through groove, so that the limit ring 501 drives the limit push block 502 to rotate inside the outer sleeve 1, and as the limit push block 502 rotates, it slides into the inner part of the fixed clamping block 401, gradually pushing the fixed clamping block The block 401 slides along the guide slide rod 403, the spring 404 is stretched, and the multiple groups of fixed clamping blocks 401 move synchronously toward the axis of the outer sleeve 1, stably clamping the insulation sleeve 3 therebetween, and installing the inner sleeve 2 to the inside of the insulation sleeve 3, that is, the insulation sleeve 3 is installed and fixed. After the device is used for a long time, when the insulation sleeve 3 needs to be repaired and disassembled, the rotating connecting piece 602 is contracted and the limit push block 502 is pulled to rotate in the opposite direction to stop clamping and fixing the insulation sleeve 3, and the disassembly process can be quickly completed.

Claims

1. A vacuum furnace insulation structure, characterized in that: The invention comprises an outer sleeve (1), an inner sleeve (2) and an insulation sleeve (3), wherein the insulation sleeve (3) is arranged inside the outer sleeve (1), the inner sleeve (2) fits the inner wall of the insulation sleeve (3), a fixing component (4) fitting the outer surface of the insulation sleeve (3) is arranged inside the outer sleeve (1), a rotatable rotation limiting mechanism (5) is arranged inside the outer sleeve (1), and the rotation limiting mechanism (5) is connected to the fixing component (4), and a driving mechanism (6) for driving the rotation limiting mechanism (5) to rotate is arranged on the outside of the outer sleeve (1).

2. A vacuum furnace insulation structure according to claim 1, characterized in that: The thermal insulation sleeve (3) is composed of two groups of upper and lower composite insulation boards, and the two groups of composite insulation boards are snap-connected.

3. A vacuum furnace insulation structure according to claim 1, characterized in that: The fixing assembly (4) comprises a fixing clamp (401), side plates (402) are fixedly mounted on the front and rear sides of the fixing clamp (401), a guide slide rod (403) is slidably mounted on the surface of the side plate (402), a baffle is fixedly mounted on one end of the guide slide rod (403), the other end of the guide slide rod (403) is fixedly connected to the inner wall of the outer sleeve (1), a spring (404) is fixedly mounted on the surface of the side plate (402), and the free end of the spring (404) is fixedly connected to the inner wall of the outer sleeve (1).

4. A vacuum furnace insulation structure according to claim 3, characterized in that: The number of the fixing components (4) is multiple, and the multiple fixing components (4) are arranged in a circular array inside the outer sleeve (1), an inclined groove is provided inside the fixing clamp block (401), and the fixing clamp block (401) and the thermal insulation sleeve plate (3) are arranged in correspondence.

5. The vacuum furnace insulation structure according to claim 1, characterized in that: The rotation limiting mechanism (5) comprises a limiting ring (501), a limiting push block (502) is fixedly mounted on the inner wall of the limiting ring (501), a connecting plate (503) is fixedly mounted on the outer side of the limiting ring (501), through grooves are formed on the left and right sides of the outer sleeve (1), and the connecting plate (503) is slidably mounted inside the through grooves.

6. A vacuum furnace insulation structure according to claim 5, characterized in that: The number of the limiting push blocks (502) is multiple, and the multiple groups of limiting push blocks (502) are arranged in a circular array inside the limiting ring (501), the sizes of the two ends of the limiting push blocks (502) gradually change from small to large, and are arranged corresponding to the inclined grooves of the fixed clamping block (401), and the limiting push blocks (502) are arranged to fit the inside of the fixed clamping block (401).

7. The vacuum furnace insulation structure according to claim 1, characterized in that: The driving mechanism (6) comprises an electric push rod (601), with rotating connecting members (602) being provided at both ends of the electric push rod (601), and the electric push rod (601) is respectively rotatably connected to the surface of the outer sleeve (1) and the surface of the rotating limit mechanism (5) via the rotating connecting members (602).

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