Fixing device for middle section of hot area of furnace body

Abstract

The utility model discloses a furnace body hot area middle section fixing device which comprises a middle section limiting bolt, a guide rail, an installation support and an adjusting and positioning assembly. The upper end of the mounting bracket is fixedly mounted in the middle of the metal hot area; the adjusting and positioning assembly is mounted at the lower end of the mounting bracket; the guide rail is installed in the furnace body in the length direction of the metal hot area, a hot area middle section limiting hole is formed in the guide rail, and the middle section limiting bolt penetrates through the lower end of the installation support and the adjusting and positioning assembly and is inserted into the hot area middle section limiting hole, so that the middle of the metal hot area is fixed to the guide rail. The utility model relates to the technical field of industrial furnaces, and can solve the problem that a rear connecting part is extruded when a metal hot area expands backwards in one direction in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial furnaces, in particular to a middle section fixing device of a furnace hot zone. Background Art

[0002] In industrial furnaces such as vacuum high-pressure gas quenching furnaces, the metal hot zone is placed in the furnace. The metal hot zone in the prior art is usually fixed by a front sealing plate. When the furnace body is running, the temperature of the high-temperature hot zone can reach above 1450°C, resulting in a large expansion of the metal hot zone. Since the front end of the metal hot zone is fixed, the metal hot zone can only expand backward in one direction, resulting in the rear end squeezing the thermocouples passing through the hot zone insulation screen and other connecting parts of the overheating zone screen, thereby causing damage to the rear connecting parts. Therefore, it is necessary to provide a fixing device for the middle section of the hot zone of the furnace body, which can solve the problem of squeezing the rear connecting parts when the metal hot zone expands backward in one direction in the prior art. Summary of the invention

[0003] The utility model aims to provide a furnace hot zone middle section fixing device, which can solve the problem of extruding rear connecting parts when the metal hot zone expands backward in one direction in the prior art.

[0004] The utility model is achieved in this way:

[0005] A device for fixing the middle section of a furnace hot zone comprises a middle section limit pin, a guide rail, a mounting bracket and an adjustment and positioning assembly; the upper end of the mounting bracket is fixedly mounted to the middle section of a metal hot zone, and the adjustment and positioning assembly is mounted on the lower end of the mounting bracket; the guide rail is mounted in the furnace body along the length direction of the metal hot zone, a middle section limit hole of the hot zone is formed on the guide rail, the middle section limit pin penetrates the lower end of the mounting bracket and the adjustment and positioning assembly and is inserted into the middle section limit hole of the hot zone, so that the middle section of the metal hot zone is fixed on the guide rail.

[0006] A pair of furnace hot zone middle section fixing devices are symmetrically arranged on both sides of the middle of the metal hot zone.

[0007] The mounting bracket comprises a mounting plate, a support plate and a base plate. A pair of support plates are arranged in parallel between the mounting plate and the base plate to form a hollow frame-shaped mounting bracket. The mounting plate is fixedly mounted on the middle outer wall of the metal hot zone, and the adjustment and positioning assembly is mounted on the base plate.

[0008] The adjustment and positioning assembly includes an adjustment plate and a pad, which are detachably mounted on the top and bottom of the base plate respectively. The lower end of the middle limit pin passes through the adjustment plate, base plate and pad in sequence and is inserted into the middle limit hole of the hot zone.

[0009] The adjustment plate and the base plate are both formed with a first pin hole, the first pin hole on the adjustment plate completely overlaps or partially overlaps with the first pin hole on the base plate, and a second pin hole is formed on the cushion block; the upper end of the second pin hole is connected to the first pin hole, and the lower end of the second pin hole is aligned with the middle limit hole of the hot zone, so that the middle limit pin is inserted between the adjustment plate, the base plate, the cushion block and the guide rail.

[0010] The bottom plate is formed with an elongated adjustment hole, so that the adjustment plate can be adjustably mounted on the bottom plate through the adjustment hole.

[0011] The upper part of the middle limit pin is a flat structure, and a hole is formed on the flat structure.

[0012] The pair of support plates are formed with observation windows, and the observation windows of the pair of support plates are respectively located on both sides of the flat structure.

[0013] The mounting plate is in an arc surface structure, and the curvature of the arc surface structure is consistent with the curvature of the outer wall of the metal hot zone, so that the mounting plate is fitted on the outer wall of the metal hot zone.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model is provided with a mounting bracket, a middle limit pin and a guide rail. The guide rail is installed in the furnace body beside the metal hot zone, and the mounting bracket is installed in the middle of the metal hot zone and plugged into the guide rail through the middle limit pin. It is used to limit the installation of the middle of the metal hot zone, and distribute the thermal expansion of the metal hot zone in a high temperature environment to both ends, that is, converting the backward unidirectional expansion into forward and backward bidirectional expansion, reducing the rear expansion, and solving the problem of excessive rear expansion and extrusion damage to the rear connecting parts.

[0016] 2. The utility model is provided with a mounting bracket and an adjustment and positioning assembly. The mounting position of the adjustment plate on the base plate is adjusted through the adjustment hole so that the first pin hole on the adjustment plate and the base plate completely overlap or partially overlap. The alignment degree between the middle limit pin and the middle limit hole of the hot zone on the guide rail can be limited and adjusted, thereby ensuring rapid and accurate positioning and fixation of the middle of the metal hot zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the fixing device of the middle section of the hot zone of the furnace body of the utility model;

[0018] Figure 2 It is a side view of the fixing device for the middle section of the hot zone of the furnace body of the utility model;

[0019] Figure 3 This is a front view of the fixing device for the middle section of the hot zone of the furnace body of the utility model;

[0020] Figure 4 yes Figure 2 Middle AA section;

[0021] Figure 5 yes Figure 3 Middle BB section;

[0022] Figure 6 This is a three-dimensional installation diagram of the fixing device for the middle section of the hot zone of the furnace body of the utility model;

[0023] Figure 7 This is the installation front view of the fixing device for the middle section of the hot zone of the furnace body of the utility model;

[0024] Figure 8 It is a side view of the middle section limit pin of the middle section fixing device of the hot zone of the furnace body of the utility model;

[0025] Fig. 9 It is a front view of a middle section limit latch in a middle section fixing device of a furnace hot zone of the utility model.

[0026] In the figure, 1 is a middle limit pin, 101 is a flat structure, 102 is a hole, 2 is a guide rail, 3 is a metal hot zone, 4 is a mounting bracket, 401 is a mounting plate, 402 is a support plate, 403 is a bottom plate, 404 is an observation window, 5 is an adjustment positioning assembly, 501 is an adjustment plate, 502 is a cushion block, 503 is an adjustment hole, 504 is a first pin hole, and 505 is a second pin hole. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] Please see attached Figure 1 To Attachment Figure 3 , Attachment Figure 6 and attached Figure 7 A device for fixing the middle section of a furnace hot zone comprises a middle section limit pin 1, a guide rail 2, a mounting bracket 4 and an adjustment and positioning assembly 5; the upper end of the mounting bracket 4 is fixedly mounted to the middle part of a metal hot zone 3, and the adjustment and positioning assembly 5 is mounted on the lower end of the mounting bracket 4; the guide rail 2 is mounted in the furnace body along the length direction of the metal hot zone 3, and a middle section limit hole of the hot zone is formed on the guide rail 2 (not shown in the figure), the middle section limit pin 1 passes through the lower end of the mounting bracket 4 and the adjustment and positioning assembly 5 and is inserted into the middle section limit hole of the hot zone, so that the middle part of the metal hot zone 3 is fixed on the guide rail 2.

[0029] The mounting bracket 4 is used to connect the guide rail 2 and the metal hot zone 3. The mounting bracket 4 and the guide rail 2 are adjusted by adjusting the positioning assembly 5 so that the middle limit pin 1 is more accurately aligned with the hot zone middle limit hole on the guide rail 2 when plugged in. The mounting bracket 4 is located in the middle of the metal hot zone 3. While ensuring that the metal hot zone 3 is reliably fixed, the traditional backward unidirectional expansion of the metal hot zone 3 when it is heated and expanded is changed to bidirectional expansion, that is, with the plugging position of the middle limit pin 1 as the midpoint, the metal hot zone 3 expands simultaneously to the front and rear, thereby reducing the rear expansion, thereby avoiding the problem of the metal hot zone 3 squeezing the rear connection parts due to the large rear expansion.

[0030] A pair of furnace hot zone middle section fixing devices are symmetrically arranged on both sides of the middle of the metal hot zone 3 .

[0031] A pair of furnace hot zone middle section fixing devices are used to limit the displacement of both sides of the middle of the metal hot zone 3. The symmetrical structure can ensure the force balance on both sides of the middle of the metal hot zone 3, thereby ensuring the reliable installation of the metal hot zone 3 and uniform expansion at both ends.

[0032] Please see attached Figure 1 To Attachment Figure 4 The mounting bracket 4 includes a mounting plate 401, a support plate 402 and a bottom plate 403. A pair of support plates 402 are arranged in parallel between the mounting plate 401 and the bottom plate 403 to form a hollow frame-shaped mounting bracket 4; the mounting plate 401 is fixedly mounted on the middle outer wall of the metal hot zone 3, and the adjustment and positioning assembly 5 is mounted on the bottom plate 403.

[0033] The mounting plate 401, a pair of support plates 402 and the bottom plate 403 together form a hollow frame structure, which can provide operating space for the installation and adjustment of the positioning assembly 5 and the insertion of the middle limit pin 1 while ensuring stable support for the metal hot zone 3.

[0034] Please see attached Figure 1 To Attachment Figure 4 The adjustment and positioning assembly 5 includes an adjustment plate 501 and a cushion block 502, which are detachably mounted on the top and bottom of the base plate 403, respectively. The lower end of the middle limit pin 1 passes through the adjustment plate 501, the base plate 403 and the cushion block 502 in sequence and is inserted into the middle limit hole of the hot zone.

[0035] The middle limit pin 1 is limited by the adjustment plate 501, the bottom plate 403 and the cushion block 502, so that the lower end of the middle limit pin 1 can be accurately aligned with the middle limit hole of the hot zone, thereby ensuring that the middle of the metal hot zone 3 can be stopped at the middle limit hole of the hot zone through the middle limit pin 1, limiting the displacement of the middle of the metal hot zone 3.

[0036] Please see attached Figure 4 and attached Figure 5The adjusting plate 501 and the bottom plate 403 are both formed with a first pin hole 504, the first pin hole 504 on the adjusting plate 501 completely overlaps or partially overlaps with the first pin hole 504 on the bottom plate 403, and the cushion block 502 is formed with a second pin hole 505; the upper end of the second pin hole 505 is connected to the first pin hole 504, and the lower end of the second pin hole 505 is aligned with the middle limit hole of the hot zone, so that the middle limit pin 1 is inserted between the adjusting plate 501, the bottom plate 403, the cushion block 502 and the guide rail 2.

[0037] Preferably, the sizes of the first pin holes 504 on the adjustment plate 501 and the base plate 403 are both larger than the size of the middle-section limit pin 1. The first pin holes 504 on the adjustment plate 501 and the base plate 403 partially overlap, so that the first pin holes 504 and the second pin holes 505 of the overlapping part are aligned, and the size of the second pin hole 505 matches the middle-section limit pin 1. Therefore, the first pin holes 504 and the second pin holes 505 can be used to limit the position of the middle-section limit pin 1, and the reliability of the middle fixation of the metal hot zone 3 is ensured by the alignment of the hole positions.

[0038] Please see attached Figure 4 and attached Figure 5 The bottom plate 403 is formed with an elongated adjustment hole 503, so that the adjustment plate 501 can be adjustably mounted on the bottom plate 403 through the adjustment hole 503 via mounting parts such as bolts and nuts.

[0039] The elongated adjustment hole 503 can adjust the installation position of the adjustment plate 501 on the base plate 403, so that the first pin hole 504 on the adjustment plate 501 completely overlaps or partially overlaps with the first pin hole 504 on the base plate 403, and then the insertion position of the middle section limit pin 1 can be limited by the partially overlapping first pin hole 504, thereby ensuring that the insertion position of the middle section limit pin 1 is accurate.

[0040] Please see attached Figure 8 and attached Fig. 9 The upper portion of the middle limit pin 1 is a flat structure 101 , and a hole 102 is formed on the flat structure 101 .

[0041] The flat structure 101 is more convenient to hold, and improves the plugging and unplugging convenience of the middle limit latch 1. The hole 102 can be used to connect a pull ring, etc., and further improves the plugging convenience of the middle limit latch 1.

[0042] Please see attached Figure 4 , observation windows 404 are formed on the pair of support plates 402 , and the observation windows 404 of the pair of support plates 402 are respectively located on both sides of the flat structure 101 .

[0043] The observation window 404 is provided to facilitate observation of the insertion height of the middle limit pin 1 and timely detection of the situation in which the middle limit pin 1 escapes upward from the guide rail, thereby further improving the reliability of the middle limit of the metal hot zone 3.

[0044] Please see attached Figure 1 and attached Figure 4 The mounting plate 401 is in an arc surface structure, and the curvature of the arc surface structure is consistent with the curvature of the outer wall of the metal hot zone 3, so that the mounting plate 401 is closely mounted on the outer wall of the metal hot zone 3.

[0045] The mounting plate 401 with a curved surface structure can completely fit the outer wall of the metal hot zone 3, thereby increasing the contact area during installation, thereby making the connection between the mounting plate 401 and the metal hot zone 3 more secure.

[0046] Please see attached Figure 1 To Attachment Fig. 9 , the installation method and working principle of the utility model are:

[0047] The mounting bracket 4 is fitted onto the middle outer wall of the metal hot zone 3 through the mounting plate 401 with an arc surface structure and bolted and fixed. The adjustment plate 501 and the cushion block 502 are installed on the bottom plate 403 of the mounting bracket 4 through the adjustment holes 503 by means of bolts and nuts, and the bolts and nuts are not tightened.

[0048] The metal hot zone 3 is placed into the furnace body along a pair of guide rails 2 through a pulley, and the metal hot zone 3 is moved to the installation position along the pair of guide rails 2. The position of the adjustment plate 501 relative to the bottom plate 403 is adjusted along the adjustment hole 503, so that the overlapping part of the first pin hole 504 and the second pin hole 505 are aligned with the limiting hole in the middle section of the hot zone of the guide rail 2.

[0049] Insert the middle limit pin 1 through the overlapping part of the first pin hole 504 and the second pin hole 505 into the middle limit hole of the hot zone of the guide rail 2, lock the bolts and nuts between the adjustment plate 501 and the pad 502 and the bottom plate 403, and fix the middle part of the metal hot zone 3 on the guide rail 2.

[0050] When the furnace is running, the metal hot zone 3 expands due to heat. Since the middle of the metal hot zone 3 is fixed, the expansion direction of the metal hot zone 3 is to expand toward both ends, reducing the expansion amount of the rear part, thereby avoiding excessive expansion of the rear of the metal hot zone 3 and squeezing the rear connecting parts.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for fixing the middle section of a furnace hot zone, characterized in that: The invention comprises a middle section limit pin (1), a guide rail (2), a mounting bracket (4) and an adjustment and positioning assembly (5); the upper end of the mounting bracket (4) is fixedly mounted to the middle part of the metal hot zone (3), and the adjustment and positioning assembly (5) is mounted on the lower end of the mounting bracket (4); the guide rail (2) is mounted in the furnace body along the length direction of the metal hot zone (3), a hot zone middle section limit hole is formed on the guide rail (2), and the middle section limit pin (1) passes through the lower end of the mounting bracket (4) and the adjustment and positioning assembly (5) and is inserted into the hot zone middle section limit hole, so that the middle part of the metal hot zone (3) is fixed on the guide rail (2).

2. The furnace hot zone middle section fixing device according to claim 1 is characterized in that: A pair of furnace hot zone middle section fixing devices are symmetrically arranged on both sides of the middle of the metal hot zone (3).

3. The furnace hot zone middle section fixing device according to claim 1 is characterized in that: The mounting bracket (4) comprises a mounting plate (401), a support plate (402) and a bottom plate (403); a pair of support plates (402) are arranged in parallel between the mounting plate (401) and the bottom plate (403) to form a mounting bracket (4) in the shape of a hollow frame; the mounting plate (401) is fixedly mounted on the middle outer wall of the metal hot zone (3); and the adjustment and positioning assembly (5) is mounted on the bottom plate (403).

4. The furnace hot zone middle section fixing device according to claim 3 is characterized in that: The adjustment and positioning assembly (5) comprises an adjustment plate (501) and a cushion block (502), wherein the adjustment plate (501) and the cushion block (502) are detachably mounted on the top and bottom of the base plate (403), respectively, and the lower end of the middle section limit pin (1) passes through the adjustment plate (501), the base plate (403) and the cushion block (502) in sequence and is inserted into the middle section limit hole of the hot zone.

5. The furnace hot zone middle section fixing device according to claim 4 is characterized in that: The adjusting plate (501) and the bottom plate (403) are both formed with a first pin hole (504), the first pin hole (504) on the adjusting plate (501) completely overlaps or partially overlaps with the first pin hole (504) on the bottom plate (403), and the cushion block (502) is formed with a second pin hole (505); the upper end of the second pin hole (505) is connected to the first pin hole (504), and the lower end of the second pin hole (505) is aligned with the middle limit hole of the hot zone, so that the middle limit pin (1) is inserted between the adjusting plate (501), the bottom plate (403), the cushion block (502) and the guide rail (2).

6. The furnace hot zone middle section fixing device according to claim 4 or 5, characterized in that: The bottom plate (403) is formed with an elongated adjustment hole (503), so that the adjustment plate (501) can be adjustably mounted on the bottom plate (403) through the adjustment hole (503).

7. The device for fixing the middle section of the hot zone of a furnace according to claim 1, 4 or 5, characterized in that: The upper part of the middle limit latch (1) is a flat structure (101), and a hole (102) is formed on the flat structure (101).

8. The furnace hot zone middle section fixing device according to claim 3 is characterized in that: Observation windows (404) are formed on the pair of support plates (402), and the observation windows (404) of the pair of support plates (402) are respectively located on both sides of the flat structure (101).

9. The furnace hot zone middle section fixing device according to claim 3 is characterized in that: The mounting plate (401) is in an arc surface structure, and the curvature of the arc surface structure is consistent with the curvature of the outer wall of the metal hot zone (3), so that the mounting plate (401) is arranged in close contact with the outer wall of the metal hot zone (3).

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