Furnace heating chamber of vacuum gas quenching furnace

Abstract

The utility model provides a furnace heating chamber of a vacuum gas quenching furnace, which comprises a cylinder body, a front cover assembly arranged at one end of the cylinder body, a rear cover assembly arranged in the cylinder body, a check ring arranged on the surface of the front cover assembly, a plurality of first fixing frame assemblies arranged in the cylinder body, and a second fixing frame assembly arranged in the cylinder body, a base is arranged in the barrel, an air pipe is arranged in the base, a temperature measuring hole plug is arranged in the barrel, a heat insulation part is arranged on one side of the front cover assembly, a fixing pin is arranged in the heat insulation part, and a fixing block is in threaded connection with the surface of the fixing pin. According to the furnace heating chamber of the vacuum gas quenching furnace, the heat insulation pieces are arranged on the surfaces of the inner walls of the cylinder body, the front cover assembly and the rear cover assembly, and the heat insulation pieces are fixed through the cooperation of the fixing pins and the fixing blocks, so that the heat insulation pieces can be conveniently detached after being damaged in the later period; therefore, the heat insulation part can be conveniently overhauled or replaced.

Description

Technical Field

[0001] The utility model relates to the field of vacuum air quenching furnaces, in particular to a heating chamber of a vacuum air quenching furnace. Background Art

[0002] A vacuum gas quenching furnace is a device that performs quenching treatment in a vacuum environment. Its working principle is to place the workpiece to be processed in a heating chamber, first evacuate the chamber to remove air and impurities in the furnace, then heat the workpiece to a predetermined temperature through a heating element, and quickly introduce cooling gas for quenching treatment after reaching the required temperature.

[0003] The internal insulation layer of the heating chamber of the current vacuum gas quenching furnace is usually integrated, and the insulation layer will be damaged over a long period of use. For example, during repeated heating and cooling, the insulation material may experience thermal fatigue and uneven thermal expansion, resulting in cracking, peeling or deformation, or during loading and unloading, the workpiece collides with the insulation layer, or if there are certain corrosive components in the atmosphere in the furnace, the insulation material may be chemically corroded, causing its performance to degrade or even be damaged. After long-term use, the insulation material itself may age and lose its original insulation performance and structural strength. The current insulation layer is integrated with the heating chamber, so it is not convenient to disassemble it for inspection or replacement after the insulation layer is damaged.

[0004] Therefore, it is necessary to provide a vacuum gas quenching furnace heating chamber to solve the above technical problems. Utility Model Content

[0005] The utility model provides a vacuum gas quenching furnace heating chamber, which solves the problem that after the existing heat insulation layer is damaged, it is inconvenient to disassemble it for inspection or replacement.

[0006] In order to solve the above technical problems, the utility model provides a vacuum gas quenching furnace heating chamber, comprising:

[0007] A cylinder, a front cover assembly is arranged at one end of the cylinder, a rear cover assembly is arranged inside the cylinder, a retaining ring is arranged on the surface of the front cover assembly, a plurality of first fixing frame assemblies are arranged inside the cylinder, a second fixing frame assembly is arranged inside the cylinder, a base is arranged inside the cylinder, an air duct is arranged inside the base, a temperature measuring hole plug is arranged inside the cylinder, a heat insulating member is arranged on one side of the front cover assembly, a fixing pin is arranged inside the heat insulating member, and a fixing block is threadedly connected to the surface of the fixing pin;

[0008] A crossbeam, wherein the crossbeam is arranged inside the cylinder, a plurality of support caps are arranged on one side of the crossbeam, and columns are arranged inside the plurality of support caps;

[0009] A heating element is arranged inside the cylinder, an electrode ceramic is arranged at one end of the heating element, and an electrode assembly is arranged inside the electrode ceramic.

[0010] Preferably, the heating element is disposed inside the first fixing frame assembly and is located inside the second fixing frame assembly.

[0011] Preferably, the inner wall surfaces of the cylinder, the front cover assembly and the rear cover assembly are all provided with heat insulation components.

[0012] Preferably, the thermal insulation component is composed of three layers of high-temperature molybdenum, two layers of heat-resistant steel and two layers of stainless steel.

[0013] Preferably, a fixing sleeve is fixedly connected to the surface of the cylinder, and a limiting sleeve is provided on the surface of the fixing sleeve.

[0014] Preferably, the fixing sleeve is a threaded sleeve, and a thread matching the fixing sleeve is provided inside the limiting sleeve.

[0015] Preferably, a sealing sleeve is fixedly connected to the surface of the limiting sleeve, and the sealing sleeve is made of rubber material.

[0016] Compared with the related art, the vacuum gas quenching furnace heating chamber provided by the utility model has the following features:

[0017] Beneficial effects:

[0018] The utility model provides a vacuum air quenching furnace heating chamber, wherein heat insulating parts are arranged on the inner wall surfaces of a cylinder body, a front cover assembly and a rear cover assembly, and are fixed by fixing pins and fixing blocks, so that it is convenient to disassemble the heat insulating parts after the heat insulating parts are damaged in the later stage, thereby facilitating the repair or replacement of the heat insulating parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a first embodiment of a heating chamber of a vacuum gas quenching furnace provided by the utility model;

[0020] Figure 2 for Figure 1 The structural schematic diagram of the cylinder shown;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the front cover assembly shown;

[0022] Figure 4 for Figure 1 A schematic diagram of the structure of the rear cover assembly shown;

[0023] Figure 5 for Figure 2An enlarged schematic diagram of part A is shown;

[0024] Figure 6 for Figure 2 An enlarged schematic diagram of part B is shown;

[0025] Figure 7 for Figure 2 An enlarged schematic diagram of the D portion shown;

[0026] Figure 8 A schematic structural diagram of a second embodiment of a heating chamber of a vacuum air quenching furnace provided by the utility model;

[0027] Fig. 9 for Figure 8 An enlarged schematic diagram of part C is shown.

[0028] Numbers in the figure: 1. cylinder, 2. front cover assembly, 3. rear cover assembly, 4. retaining ring, 5. crossbeam, 6. support cap, 7. column, 8. electrode assembly, 9. heating element, 10. electrode ceramic, 11. fixing pin, 12. fixing block, 14. first fixing frame assembly, 15. second fixing frame assembly, 16. base, 17. air duct, 19. thermal insulation, 27. temperature measuring hole plug, 28. fixing sleeve, 29. limiting sleeve, 30. sealing sleeve. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0030] First embodiment

[0031] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 ,in, Figure 1 A schematic structural diagram of a first embodiment of a heating chamber of a vacuum gas quenching furnace provided by the utility model; Figure 2 for Figure 1 The structural schematic diagram of the cylinder shown; Figure 3 for Figure 1 A schematic diagram of the structure of the front cover assembly shown;

[0032] Figure 4 for Figure 1 A schematic diagram of the structure of the rear cover assembly shown; Figure 5 for Figure 2 An enlarged schematic diagram of part A is shown; Figure 6 for Figure 2 An enlarged schematic diagram of part B is shown; Figure 7 for Figure 2The enlarged schematic diagram of the D part is shown. A vacuum gas quenching furnace heating chamber comprises:

[0033] A cylinder 1, a front cover assembly 2 is provided at one end of the cylinder 1, a rear cover assembly 3 is provided inside the cylinder 1, a retaining ring 4 is provided on the surface of the front cover assembly 2, a base 16 is provided inside the cylinder 1, an air duct 16 is provided inside the base 16, a temperature measuring hole plug 27 is provided inside the cylinder 1, a heat insulating member 19 is provided on one side of the front cover assembly 2, a fixing pin 11 is provided inside the heat insulating member 19, a fixing block 12 is threadedly connected to the surface of the fixing pin 11, a plurality of first fixing frame assemblies 14 are provided inside the heat insulating member 19, and a second fixing frame assembly 15 is provided inside the heat insulating member 19;

[0034] A crossbeam 5, wherein the crossbeam 5 is disposed inside the cylinder 1, and a plurality of support caps 6 are disposed on one side of the crossbeam 5, and columns 7 are disposed inside the plurality of support caps 6;

[0035] A heating element 9 is disposed inside the barrel 1 , an electrode ceramic 10 is disposed at one end of the heating element 9 , and an electrode assembly 8 is disposed inside the electrode ceramic 10 .

[0036] A plurality of first fixing frame assemblies 14 and a plurality of second fixing frame assemblies 15 are fixedly installed inside the heat insulating member 19 , and the heating element 9 is fixedly installed in a serpentine shape inside the plurality of first fixing frame assemblies 14 , the plurality of second fixing frame assemblies 15 and the plurality of electrode ceramics 10 .

[0037] The fixing pin 11 is a bolt, and a plurality of fixing blocks 12 are fixedly connected inside the cylinder 1, the front cover assembly 2 and the rear cover assembly 3. A plurality of fixing holes are opened inside the heat insulation member 19, which are used to insert the fixing pin 11 into the fixing hole and then rotate it to one side, so that it can be moved to one side to a suitable position inside the fixing block 12.

[0038] A plurality of electrode ceramics 10 are fixedly installed inside the cylinder 1 and the heat insulating member 19 , and an electrode assembly 8 is fixedly installed inside each of the plurality of electrode ceramics 10 .

[0039] The heating element 9 is disposed inside the first fixing frame assembly 14 and is located inside the second fixing frame assembly 15 .

[0040] The inner wall surfaces of the cylinder 1 , the front cover assembly 2 and the rear cover assembly 3 are all provided with heat insulation members 19 .

[0041] The thermal insulation member 19 is composed of three layers of high-temperature molybdenum, two layers of heat-resistant steel and two layers of stainless steel.

[0042] The working principle of the heating chamber of a vacuum gas quenching furnace provided by the utility model is as follows:

[0043] When in use, the plurality of fixing pins 11 are rotated to one side so as to move to one side inside the plurality of fixing blocks 12 respectively. After the fixing pins 11 are removed, the heat insulating member 19 is moved to one side and removed.

[0044] Compared with the related art, the vacuum gas quenching furnace heating chamber provided by the utility model has the following features:

[0045] Beneficial effects:

[0046] The utility model provides a vacuum air quenching furnace heating chamber, in which a heat insulating member 19 is arranged on the inner wall surfaces of a cylinder 1, a front cover assembly 2 and a rear cover assembly 3, and is fixed by a fixing pin 11 and a fixing block 12, so that it is convenient to disassemble the heat insulating member 19 after the heat insulating member 19 is damaged in the later stage, thereby facilitating the repair or replacement of the heat insulating member 19.

[0047] Second embodiment

[0048] Please refer to Figure 8 and Fig. 9 Based on the vacuum air quenching furnace heating chamber provided in the first embodiment of the present application, the second embodiment of the present application proposes another vacuum air quenching furnace heating chamber. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0049] Specifically, the difference of the vacuum air quenching furnace heating chamber provided in the second embodiment of the present application is that, in the vacuum air quenching furnace heating chamber, a fixing sleeve 28 is fixedly connected to the surface of the cylinder 1, and a limiting sleeve 29 is provided on the surface of the fixing sleeve 28.

[0050] The fixing sleeve 28 is a threaded sleeve, and a thread matching the fixing sleeve 28 is formed inside the limiting sleeve 29 .

[0051] A sealing sleeve 30 is fixedly connected to the surface of the limiting sleeve 29 , and the sealing sleeve 30 is made of rubber material.

[0052] The sealing sleeve 20 is sleeved on the surface of the front cover assembly 2 and the retaining ring 4 , thereby increasing the sealing effect of the front cover assembly 2 .

[0053] Sealing sleeve 20

[0054] The working principle of the heating chamber of a vacuum gas quenching furnace provided by the utility model is as follows:

[0055] When in use, the limiting sleeve 29 is rotated to one side so that the surface of the fixing sleeve 28 is separated to one side, and then the limiting sleeve 29 is removed.

[0056] After the limiting sleeve 29 is sleeved on the surface of the fixing sleeve 28 and then rotated to one side, the surface of the fixing sleeve 28 is moved to one side to a suitable position.

[0057] Compared with the related art, the vacuum gas quenching furnace heating chamber provided by the utility model has the following features:

[0058] Beneficial effects:

[0059] The utility model provides a vacuum gas quenching furnace heating chamber, which limits the front cover assembly 2 by a limiting sleeve 29, thereby increasing the fixing effect and cooperating with a sealing sleeve 30 to increase the sealing effect of the front cover assembly 2.

[0060] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vacuum gas quenching furnace heating chamber, characterized in that: include: A cylinder, a front cover assembly is arranged at one end of the cylinder, a rear cover assembly is arranged inside the cylinder, a retaining ring is arranged on the surface of the front cover assembly, a plurality of first fixing frame assemblies are arranged inside the cylinder, a second fixing frame assembly is arranged inside the cylinder, a base is arranged inside the cylinder, an air duct is arranged inside the base, a temperature measuring hole plug is arranged inside the cylinder, a heat insulating member is arranged on one side of the front cover assembly, a fixing pin is arranged inside the heat insulating member, and a fixing block is threadedly connected to the surface of the fixing pin; A crossbeam, wherein the crossbeam is arranged inside the cylinder, a plurality of support caps are arranged on one side of the crossbeam, and columns are arranged inside the plurality of support caps; A heating element is arranged inside the cylinder, an electrode ceramic is arranged at one end of the heating element, and an electrode assembly is arranged inside the electrode ceramic.

2. A vacuum gas quenching furnace heating chamber according to claim 1, characterized in that: The heating element is disposed inside the first fixing frame assembly and is located inside the second fixing frame assembly.

3. The vacuum gas quenching furnace heating chamber according to claim 1, characterized in that: The inner wall surfaces of the cylinder, the front cover assembly and the rear cover assembly are all provided with heat insulation members.

4. The vacuum gas quenching furnace heating chamber according to claim 1, characterized in that: The heat insulation component is composed of three layers of high-temperature molybdenum, two layers of heat-resistant steel and two layers of stainless steel.

5. The vacuum gas quenching furnace heating chamber according to claim 3, characterized in that: A fixing sleeve is fixedly connected to the surface of the cylinder, and a limiting sleeve is arranged on the surface of the fixing sleeve.

6. A vacuum gas quenching furnace heating chamber according to claim 5, characterized in that: The fixing sleeve is a threaded sleeve, and a thread matching the fixing sleeve is provided inside the limiting sleeve.

7. The vacuum gas quenching furnace heating chamber according to claim 6, characterized in that: A sealing sleeve is fixedly connected to the surface of the limiting sleeve, and the sealing sleeve is made of rubber material.

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