Vacuum furnace heating chamber blanking cap

Abstract

The utility model relates to the technical field of vacuum furnaces, and discloses a vacuum furnace heating chamber plug cover which solves the problem that an existing vacuum furnace single-layer plug cover is prone to causing heat loss, and comprises a plug cover body which is composed of a baffle, a plurality of L-shaped check blocks, a screw rod, a strip-shaped limiting plate, a nut, a first pin, an inner limiting plate and a second pin. The baffle is fixedly connected to the outer side edge of the vacuum furnace, the L-shaped check block is fixedly connected to the side edge of the side, away from the vacuum furnace, of the baffle, the screw is inserted into a temperature measuring hole in the vacuum furnace in a penetrating mode, the strip-shaped limiting plate is arranged at one end of the screw in a sleeved mode and matched with the baffle and the L-shaped check block, and the nut is connected to the end, close to the strip-shaped limiting plate, of the screw. The first pin is inserted into the end, close to the strip-shaped limiting plate, of the screw, the inner limiting plate sleeves the end, away from the nut, of the screw, and the second pin is inserted into the end, close to the inner limiting plate, of the screw. By means of the vacuum furnace heating chamber blanking cap, the inner side and the outer side of the temperature measuring hole in a heating furnace can be plugged at the same time, and heat loss is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum furnaces, and specifically relates to a blanking cover for a heating chamber of a vacuum furnace. Background Art

[0002] Vacuum furnaces are used for heat treatment of workpieces, which can achieve oxidation-free, decarburization-free, and carburization-free treatment, remove phosphorous chips on the surface of workpieces, and have functions such as degreasing and degassing, so as to achieve the effect of surface brightening and purification. Temperature measurement holes are usually provided on the heating chamber of the vacuum furnace, so that temperature measurement equipment can be installed inside the temperature measurement holes according to the use requirements. When the temperature measurement holes are not in use, a single-layer blanking cover is generally installed at the position close to the furnace mouth, but the blanking cover is usually not installed at the opening position on the inner side of the heating chamber, which will cause heat loss and affect the use effect of the vacuum furnace. Therefore, this application improves the existing vacuum furnace and proposes a blanking cover for the heating chamber of the vacuum furnace. Content of the Utility Model

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a blanking cover for a heating chamber of a vacuum furnace, which effectively solves the problem that the existing single-layer blanking cover of the vacuum furnace is prone to heat loss.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A blanking cover for a heating chamber of a vacuum furnace, including a blanking cover body, the blanking cover body is composed of a baffle plate, a plurality of L-shaped stoppers, a screw rod, a strip-shaped limiting plate, a nut, a pin one, an inner limiting plate, and a pin two. The baffle plate is fixedly connected to the outer side of the vacuum furnace, the L-shaped stoppers are fixedly connected to the side of the baffle plate away from the vacuum furnace, the screw rod penetrates inside the temperature measurement hole on the vacuum furnace, the strip-shaped limiting plate is sleeved on one end of the screw rod and matches with the baffle plate and the L-shaped stoppers, the nut is connected to one end of the screw rod close to the strip-shaped limiting plate, the pin one penetrates through one end of the screw rod close to the strip-shaped limiting plate, the inner limiting plate is sleeved on the end of the screw rod away from the nut, and the pin two penetrates through one end of the screw rod close to the inner limiting plate.

[0005] Preferably, the baffle plate and the outer surface of the vacuum furnace are of a welded connection structure, and the L-shaped stoppers and the baffle plate are of a welded connection structure.

[0006] Preferably, one end of the screw rod is provided with a pin hole one matching with the pin one, and the other end of the screw rod is provided with a pin hole two matching with the pin two.

[0007] Preferably, a heat insulation washer is arranged between the inner limiting plate and the pin two, and a heat insulation washer and a heat insulation movable pad are arranged between the inner limiting plate and the inner side of the vacuum furnace.

[0008] Preferably, a heat insulation sleeve is sleeved on the screw rod, and a plurality of heat insulation blocking pieces penetrating through the heat insulation sleeve are fixedly arranged on the outer surface of the screw rod.

[0009] Preferably, a metal washer is provided between the strip-shaped limiting plate and the nut, and a combined washer is provided between the nut and the first pin.

[0010] Preferably, the combined washer is composed of a first semi-circular washer and a second semi-circular washer. Card slots are provided at both ends of the first semi-circular washer, and card heads matching the card slots are fixedly provided at both ends of the second semi-circular washer.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] (1) During operation, by providing a plug cover body composed of a baffle, a number of L-shaped stoppers, a screw rod, a strip-shaped limiting plate, a nut, a first pin, an inner limiting plate, and a second pin, it is possible to simultaneously seal the inner and outer sides of the temperature measurement hole, reduce heat loss, and at the same time, it is possible to install the plug cover body from the inner side of the temperature measurement hole. By installing from both the inner and outer sides, its installation stability can be improved;

[0013] (2) By providing a small heat-insulating washer, a large heat-insulating washer, and a heat-insulating movable pad, the installation tightness can be improved, and at the same time, it has a heat-insulating function. By providing a heat-insulating sleeve and a heat-insulating plug piece, the heat-insulating effect can be further improved, reducing the possibility of heat loss from the temperature measurement hole. By providing a combined washer composed of a first semi-circular washer and a second semi-circular washer, the stability of the nut can be improved, reducing the possibility of its loosening, and thus improving the installation stability of the entire plug cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model.

[0015] In the drawings:

[0016] Figure 1 is one of the schematic connection structures of the plug cover body of the present utility model and the vacuum furnace;

[0017] Figure 2 is the second schematic connection structure of the plug cover body of the present utility model and the vacuum furnace;

[0018] Figure 3 is the third schematic connection structure of the plug cover body of the present utility model and the vacuum furnace;

[0019] Figure 4 is the schematic structure diagram of the combined washer of the present utility model;

[0020] In the figure: 1. Plug cover body; 2. Baffle; 3. L-shaped stop block; 4. Screw; 5. Strip-shaped limit plate; 6. Nut; 7. Pin 1; 8. Inner limit plate; 9. Pin 2; 10. Vacuum furnace; 11. Temperature measurement hole; 12. Pin hole 1; 13. Pin hole 2; 14. Heat insulation small washer; 15. Heat insulation large washer; 16. Heat insulation movable pad; 17. Heat insulation sleeve; 18. Heat insulation plug piece; 19. Metal washer; 20. Combined washer; 21. Semi-circular washer 1; 22. Semi-circular washer 2; 23. Card slot; 24. Chuck. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Consisted of Figure 1 and Figure 2 given, the plug cover of the heating chamber of the vacuum furnace of the present invention includes a plug cover body 1, and the plug cover body 1 is composed of a baffle 2, several L-shaped stop blocks 3, a screw 4, a strip-shaped limit plate 5, a nut 6, a pin 1 7, an inner limit plate 8 and a pin 2 9. The baffle 2 is fixedly connected to the outer side of the vacuum furnace 10, and the L-shaped stop block 3 is fixedly connected to the side of the baffle 2 away from the vacuum furnace 10. The screw 4 penetrates inside the temperature measurement hole 11 on the vacuum furnace 10. The strip-shaped limit plate 5 is sleeved on one end of the screw 4 and matches the baffle 2 and the L-shaped stop block 3. The nut 6 is connected to one end of the screw 4 close to the strip-shaped limit plate 5. The pin 1 7 penetrates through one end of the screw 4 close to the strip-shaped limit plate 5. The inner limit plate 8 is sleeved on the end of the screw 4 away from the nut 6. The pin 2 9 penetrates through one end of the screw 4 close to the inner limit plate 8;

[0023] Through the plug cover body 1 composed of the baffle 2, several L-shaped stop blocks 3, the screw 4, the strip-shaped limit plate 5, the nut 6, the pin 1 7, the inner limit plate 8 and the pin 2 9, it can be stably installed with the vacuum furnace 10, realize the plugging of the temperature measurement hole 11, and reduce the possibility of heat loss;

[0024] Consisted of Figures 2 to 4It is given that the baffle plate 2 and the outer surface of the vacuum furnace 10 are of a welded connection structure, the L-shaped stop block 3 and the baffle plate 2 are of a welded connection structure, one end of the screw 4 is provided with a first pin hole 12 matching the first pin 7, the other end of the screw 4 is provided with a second pin hole 13 matching the second pin 9, a heat insulation washer 14 is arranged between the inner limiting plate 8 and the second pin 9, a heat insulation washer 15 and a heat insulation movable pad 16 are arranged between the inner limiting plate 8 and the inner side edge of the vacuum furnace 10, a heat insulation sleeve 17 is sleeved on the screw 4, a plurality of heat insulation blocking pieces 18 inserted through the heat insulation sleeve 17 are fixedly arranged on the outer surface of the screw 4, a metal washer 19 is arranged between the strip-shaped limiting plate 5 and the nut 6, a combined washer 20 is arranged between the nut 6 and the first pin 7, the combined washer 20 is composed of a first semi-circular washer 21 and a second semi-circular washer 22, clamping grooves 23 are arranged at both ends of the first semi-circular washer 21, and clamping heads 24 matching the clamping grooves 23 are fixedly arranged at both ends of the second semi-circular washer 22;

[0025] During installation, first, the inner limiting plate 8, the heat insulation washer 14, the heat insulation washer 15 and the heat insulation movable pad 16 are sleeved on one end of the screw 4, then the second pin 9 is inserted into the second pin hole 13. At this time, the assembled half of the plug cover body 1 is placed inside the vacuum furnace 10 and inserted through the temperature measuring hole 11 from the inside to the outside. At this time, the heat insulation washer 15 is attached to the inner side wall of the vacuum furnace 10, and clamping is realized through the second pin 9 and the inner limiting plate 8. The strip-shaped limiting plate 5 is sleeved on the other end of the screw 4, and then the metal washer 19, the nut 6 and the first pin 7 are installed. The strip-shaped limiting plate 5 is rotated so that it is inserted between the L-shaped stop block 3 and the baffle plate 2, thereby forming a limiting effect. The nut 6 is tightened by using a wrench. Finally, the combined washer 20 is installed between the nut 6 and the first pin 7. Through the combined washer 20, the possibility of the nut 6 loosening can be reduced, and thus the installation stability can be improved. Through the heat insulation washer 14, the heat insulation washer 15, the heat insulation movable pad 16 and the heat insulation blocking pieces 18 of the heat insulation sleeve 17, the heat insulation performance can be improved and the heat loss can be reduced.

[0026] During operation, by providing a plug cover body composed of a baffle plate, a plurality of L-shaped stop blocks, a screw, a strip-shaped limiting plate, a nut, a first pin, an inner limiting plate and a second pin, the inner side and the outer side of the temperature measuring hole can be simultaneously blocked, the heat loss can be reduced, and at the same time, the plug cover body can be installed from the inner side of the temperature measuring hole. Through the installation method from both the inner side and the outer side, the installation stability can be improved; by providing the heat insulation washer, the heat insulation washer and the heat insulation movable pad, the installation sealing performance can be improved and it has a heat insulation function at the same time. By providing the heat insulation sleeve and the heat insulation blocking pieces, the heat insulation effect can be further improved and the possibility of heat loss from the temperature measuring hole can be reduced. By providing a combined washer composed of a first semi-circular washer and a second semi-circular washer, the stability of the nut can be improved, the possibility of its loosening can be reduced, and thus the installation stability of the entire plug cover body can be improved.

Claims

1. A vacuum furnace heating chamber plugging cover, comprising a plugging cover body (1), characterized in that: The blocking cover body (1) is composed of a baffle (2), a plurality of L-shaped baffles (3), a screw (4), a strip-shaped limiting plate (5), a nut (6), a first pin (7), an inner limiting plate (8) and a second pin (9); the baffle (2) is fixedly connected to the outer side of the vacuum furnace (10); the L-shaped baffle (3) is fixedly connected to the side of the baffle (2) away from the vacuum furnace (10); the screw (4) is inserted into the temperature measuring hole (11) on the vacuum furnace (10). The strip-shaped limit plate (5) is sleeved on one end of the screw rod (4) and matches with the baffle plate (2) and the L-shaped stopper (3); the nut (6) is connected to one end of the screw rod (4) close to the strip-shaped limit plate (5); the first pin (7) is inserted through one end of the screw rod (4) close to the strip-shaped limit plate (5); the inner limit plate (8) is sleeved on one end of the screw rod (4) away from the nut (6); and the second pin (9) is inserted through one end of the screw rod (4) close to the inner limit plate (8).

2. The vacuum furnace heating chamber plugging cover according to claim 1 is characterized in that: The baffle plate (2) and the outer surface of the vacuum furnace (10) are welded connection structures, and the L-shaped baffle (3) and the baffle plate (2) are welded connection structures.

3. The vacuum furnace heating chamber plugging cover according to claim 1 is characterized in that: One end of the screw rod (4) is provided with a pin hole 1 (12) matching with the pin 1 (7), and the other end of the screw rod (4) is provided with a pin hole 2 (13) matching with the pin 2 (9).

4. The vacuum furnace heating chamber plugging cover according to claim 1 is characterized in that: A small heat-insulating gasket (14) is arranged between the inner limit plate (8) and the second pin (9), and a large heat-insulating gasket (15) and a heat-insulating movable pad (16) are arranged between the inner limit plate (8) and the inner side of the vacuum furnace (10).

5. The vacuum furnace heating chamber plugging cover according to claim 1 is characterized in that: The screw rod (4) is sleeved with a heat insulating sleeve (17), and the outer surface of the screw rod (4) is fixedly provided with a plurality of heat insulating plugging pieces (18) inserted into the heat insulating sleeve (17).

6. The vacuum furnace heating chamber plugging cover according to claim 1, characterized in that: A metal washer (19) is arranged between the strip-shaped limiting plate (5) and the nut (6), and a combined washer (20) is arranged between the nut (6) and the pin one (7).

7. The vacuum furnace heating chamber plugging cover according to claim 6, characterized in that: The combined gasket (20) is composed of a semi-annular gasket 1 (21) and a semi-annular gasket 2 (22); both ends of the semi-annular gasket 1 (21) are provided with a clamping groove (23); both ends of the semi-annular gasket 2 (22) are fixedly provided with a clamping head (24) matching the clamping groove (23).

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