Improved difficult-to-fall-off heating element back insulation device for vacuum heat treatment furnace

Abstract

The utility model provides an improved difficult-to-fall heating element back insulation device for a vacuum heat treatment furnace, which comprises an integrally formed molybdenum bracket, an insulation porcelain piece, a molybdenum sleeve and a fixing piece, wherein a fixing part is fixed on a heating belt, and the molybdenum bracket is fixed on the fixing part; the two opposite end faces of the molybdenum support are respectively provided with at least two corresponding fixing holes, the insulating porcelain piece is installed in the molybdenum support, the fixing pieces are inserted in the fixing holes and penetrate through the insulating porcelain piece to fix the insulating porcelain piece in the molybdenum support, one end face of the molybdenum sleeve is fixedly connected to the insulating porcelain piece and penetrates through the molybdenum support, and the other end face of the molybdenum sleeve is fixedly connected to the molybdenum support. The heating device further comprises a supporting rod and a heat insulation screen, the heat insulation screen is fixed to the supporting rod, one end of the supporting rod is fixed in the molybdenum sleeve, and insulation and heat insulation of the heating belt and the heat insulation screen can be effectively guaranteed through the integrally-formed molybdenum support and the double-fixed insulation porcelain piece installed in the molybdenum support.

Description

Technical Field

[0001] The utility model relates to the field of heating elements, in particular to an improved non-detachable back insulation device for a heating element used in a vacuum heat treatment furnace. Background Art

[0002] In the equipment of existing common vacuum furnace manufacturers, in order to maintain the integrity of the heating belt, a back insulation device is sometimes used, so that the heating belt does not need to be punched. However, this structure often causes the heating belt to twist, spark, the insulating porcelain tube to break, and the back insulation device to fall off when the heating temperature is high.

[0003] How to ensure the insulation between the heating belt and the heat shield is a crucial issue during the operation of the vacuum furnace. During the heating process, the temperature of the heating belt is very high. Once it contacts the heat shield or the distance is too close, serious consequences such as sparks and the heat shield being burned through will occur. The conventional solution is to drill a hole in the heating belt, pass the insulating bracket through it, and use porcelain parts to maintain the distance between the heating belt and the heat shield, such as Figure 2 However, this method is destructive to the heating belt. The uneven width of the heating belt will cause local overheating of the heating belt, which will affect the service life of the heating belt. The conventional back insulation structure can make the heating belt not perforated, such as Figure 3 However, this structure often suffers from the following problems when the heating temperature is high: the heating belt is twisted, sparks are generated, the insulating porcelain tube is broken, and the back insulating device falls off. Utility Model Content

[0004] In order to solve the above technical problems, the utility model proposes an improved back insulation device of a heating element that is not easy to fall off for a vacuum heat treatment furnace. The insulation and heat insulation of the heating belt and the heat insulation screen can be effectively guaranteed through an integrally formed molybdenum bracket and a double-fixed insulating porcelain part installed in the molybdenum bracket.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An improved back insulation device for a heating element that is not easy to fall off for a vacuum heat treatment furnace is characterized in that it includes an integrally formed molybdenum bracket, a fixing portion is fixed on the heating belt, the molybdenum bracket is fixed on the fixing portion, and also includes an insulating porcelain part, a molybdenum sleeve and a fixing part. At least two corresponding fixing holes are respectively arranged on the opposite end faces of the molybdenum bracket, the insulating porcelain part is installed in the molybdenum bracket, the fixing part is inserted in the fixing hole and passes through the insulating porcelain part and fixed in the molybdenum bracket, one end face of the molybdenum sleeve is fixedly connected to the insulating porcelain part and passes through the molybdenum bracket, and also includes a support rod and a heat insulation screen, the heat insulation screen is fixed on the support rod, and one end of the support rod is fixed in the molybdenum sleeve.

[0007] In the above structure: the improved non-detachable back insulation device for the heating element for a vacuum heat treatment furnace proposed in the utility model comprises an integrally formed molybdenum bracket, a fixing portion is fixed on the heating belt, the molybdenum bracket is fixed on the fixing portion, the molybdenum bracket is integrally formed, and there will be no problem of anchor point cracking during installation and use, and it is very stable. The molybdenum bracket is installed on the heating belt through the fixing portion, and a suitable distance is reserved on the fixing portion for the molybdenum bracket to be installed and fixed. An insulating porcelain part is fixed in the molybdenum bracket, and the insulating porcelain part is fixed in the molybdenum bracket through a fixing part. At least two fixing parts are provided, which can make the insulating porcelain part more firmly fixed. A molybdenum sleeve is fixed on the insulating porcelain part, and the molybdenum sleeve is used to fix the support rod. A heat insulation screen is fixed on the support rod. The heat insulation screen can be fixed by the support rod and the molybdenum sleeve, which can effectively solve the technical problems existing in the prior art.

[0008] Further: the fixing part is a molybdenum bracket fixing plate, one end of the molybdenum bracket fixing plate is fixed to the heating belt through a pin, and one side surface of the molybdenum bracket is fixed to the molybdenum bracket fixing plate.

[0009] In the above structure, the one-piece molybdenum bracket is fixed to the molybdenum bracket fixing plate by fixing one end of the molybdenum bracket fixing plate to the heating belt.

[0010] Further: two corresponding fixing holes are respectively arranged on the upper and lower end surfaces of the molybdenum bracket, and the fixing piece is inserted into the fixing holes.

[0011] Furthermore: the fixing members are respectively provided with mounting holes, and the fixing members are fixed in the fixing holes by pins.

[0012] In the above structure: the fixing piece is fixed by the fixing hole and the pin, and a through hole is also provided on the insulating porcelain piece, corresponding to the position of the fixing hole, so as to facilitate the fixing of the fixing piece.

[0013] Furthermore: a mounting hole is provided on the support rod, and the support rod is fixed in the molybdenum sleeve by a pin.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model can effectively solve the problems existing in the prior art by providing a molybdenum bracket fixing plate and an integrally formed molybdenum bracket. The molybdenum bracket is integrally formed, and the problem of anchor point cracking will not occur during installation and use. It is fixed to the heating belt by the molybdenum bracket fixing plate. Since the molybdenum bracket fixing plate is evenly stressed, there will be no uneven width of the heating belt that will cause local overheating of the heating belt and affect the service life of the heating belt. Since the molybdenum bracket fixing plate is used to fix the molybdenum bracket in the present application, the problems of pin breakage, deformation of the U-shaped part due to being too thin, and anchor point cracking that occur in the prior art will not occur. Moreover, the insulating porcelain part in the present application is fixed by at least two or more fixing parts, so that its installation is more secure and its service life is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of this application;

[0017] Figure 2 It is a schematic diagram of the structure of the prior art Figure 1 ;

[0018] Figure 3 It is a schematic diagram of the structure of the prior art Figure 2 .

[0019] List of reference numerals:

[0020] 1. Molybdenum bracket; 2. Heating belt; 3. Insulating porcelain parts; 4. Molybdenum sleeve; 5. Support rod; 6. Heat insulation screen; 7. Molybdenum bracket fixing plate; 8. Fixing piece; 9. Pin; 10. U-shaped piece. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0022] During the operation of the vacuum furnace, in order to ensure the insulation between the heating belt 2 and the heat shield 6, the prior art usually punches holes in the heating belt 2, passes through the insulating bracket, and uses porcelain parts to maintain the distance between the heating belt 2 and the heat shield 6, such as Figure 2 As shown, this design is destructive to the heating belt 2 , and the uneven width of the heating belt 2 will cause local overheating of the heating belt 2 , thus affecting the service life of the heating belt 2 .

[0023] The existing design also provides a conventional back insulation structure so that the heating belt 2 is not perforated. Figure 3 As shown, however, when the heating temperature is high, this structure will cause the pin 9 to be easily broken, the U-shaped part 10 to be too thin and easily deformed, and the anchor point to crack, causing the heating belt 2 to twist and spark. In addition, the fixing part 8 will often rotate during installation and use, and cannot effectively play a supporting role. Moreover, the support tube relies on the insulating porcelain part 3 to support its weight. If things go on like this for a long time, it will cause the insulating porcelain part 3 to break, resulting in serious problems.

[0024] In order to solve the above technical problems, the utility model proposes an improved non-detachable back insulation device for a heating element for a vacuum heat treatment furnace, such as Figure 1 As shown, it includes an integrally formed molybdenum bracket 1, a fixing part is fixed on the heating belt 2, the molybdenum bracket 1 is fixed on the fixing part, and also includes an insulating porcelain part 3, a molybdenum sleeve 4 and a fixing part 8. At least two corresponding fixing holes are respectively arranged on the opposite end faces of the molybdenum bracket 1, the insulating porcelain part 3 is installed in the molybdenum bracket 1, the fixing part 8 is inserted in the fixing hole and passes through the insulating porcelain part 3 and is fixed in the molybdenum bracket 1, one end face of the molybdenum sleeve 4 is fixedly connected to the insulating porcelain part 3 and passes through the molybdenum bracket 1, and also includes a support rod 5 and a heat shield 6, the heat shield 6 is fixed on the support rod 5, and one end of the support rod 5 is fixed in the molybdenum sleeve 4.

[0025] The utility model proposes an improved back insulation device for a heating element that is not easy to fall off for a vacuum heat treatment furnace, comprising an integrally formed molybdenum bracket 1, a fixing portion being fixed on a heating belt 2, the molybdenum bracket 1 being fixed on the fixing portion, the molybdenum bracket 1 being integrally formed, and the problem of anchor point cracking will not occur during installation and use, and the molybdenum bracket 1 is very stable, and is installed on the heating belt 2 through the fixing portion through the molybdenum bracket 1, and a suitable distance is reserved on the fixing portion for the molybdenum bracket 1 to be installed and fixed, an insulating porcelain part 3 is fixed in the molybdenum bracket 1, and the insulating porcelain part 3 is fixed in the molybdenum bracket 1 through a fixing part 8, and at least two fixing parts 8 are provided, which can make the insulating porcelain part 3 fixed more firmly, and a molybdenum sleeve 4 is fixed on the insulating porcelain part 3, and the molybdenum sleeve 4 is used to fix a support rod 5, and a heat insulation screen 6 is fixed on the support rod 5, and the heat insulation screen 6 can be fixed by the support rod 5 and the molybdenum sleeve 4, which can effectively solve the technical problems existing in the prior art.

[0026] In this embodiment: the fixing part is a molybdenum bracket fixing plate 7, one end of the molybdenum bracket fixing plate 7 is fixed to the heating belt 2 by a pin, and one side of the molybdenum bracket 1 is fixed to the molybdenum bracket fixing plate 7. By fixing one end of the molybdenum bracket fixing plate 7 to the heating belt 2, the molybdenum bracket 1 is fixed to the molybdenum bracket fixing plate 7 to achieve the fixation of the integrally formed molybdenum bracket 1.

[0027] In this embodiment: the upper and lower end surfaces of the molybdenum bracket 1 are respectively provided with two corresponding fixing holes, and the fixing member 8 is inserted into the fixing holes. The fixing member 8 is respectively provided with pin holes, and the fixing member 8 is fixed in the fixing holes by pins.

[0028] The fixing member 8 is fixed by fixing holes and pins. A through hole is also provided on the insulating porcelain member 3, corresponding to the position of the fixing hole, so as to facilitate the fixing of the fixing member 8.

[0029] The support rod 5 is provided with a threaded hole, and the support rod 5 is fixed in the molybdenum sleeve 4 by a pin.

[0030] The utility model can effectively solve the problems existing in the prior art by providing a molybdenum bracket fixing plate 7 and an integrally formed molybdenum bracket 1. The molybdenum bracket 1 is integrally formed, and there will be no problem of anchor point cracking during installation and use. It is fixed to the heating belt 2 by the molybdenum bracket fixing plate 7. Since the molybdenum bracket fixing plate 7 is evenly stressed, there will be no uneven width of the heating belt 2 that will cause local overheating of the heating belt 2 and affect the service life of the heating belt 2. Since the molybdenum bracket fixing plate 7 is used to fix the molybdenum bracket 1 in the present application, there will be no problems such as the pin 9 breaking, the U-shaped part 10 being too thin and deforming, and the anchor point cracking that occur in the prior art. In addition, the insulating porcelain part 3 in the present application is fixed by at least two or more fixing parts 8, so that the installation is more secure and the service life is longer.

[0031] The above is only a preferred embodiment of the present invention and does not constitute any other limitation on the present invention. Any modification or equivalent change made based on the technical essence of the present invention still falls within the scope of protection required by the present invention.

Claims

1. An improved non-detachable back insulation device for heating elements for vacuum heat treatment furnaces, characterized in that: The invention comprises an integrally formed molybdenum bracket (1), a fixing portion being fixed on a heating belt (2), the molybdenum bracket (1) being fixed on the fixing portion, and further comprising an insulating porcelain piece (3), a molybdenum sleeve (4) and a fixing piece (8), at least two corresponding fixing holes being respectively arranged on opposite end faces of the molybdenum bracket (1), the insulating porcelain piece (3) being installed in the molybdenum bracket (1), the fixing piece (8) being inserted into the fixing hole and passing through the insulating porcelain piece (3) and fixing it in the molybdenum bracket (1), one end face of the molybdenum sleeve (4) being fixedly connected to the insulating porcelain piece (3) and passing through the molybdenum bracket (1), and further comprising a support rod (5) and a heat shield (6), the heat shield (6) being fixed on the support rod (5), and one end of the support rod (5) being fixed in the molybdenum sleeve (4).

2. The improved non-detachable back insulation device for heating elements used in vacuum heat treatment furnaces according to claim 1, characterized in that: The fixing part is a molybdenum bracket fixing plate (7), one end of the molybdenum bracket fixing plate (7) is fixed to the heating belt (2) by a pin, and one side surface of the molybdenum bracket (1) is fixed to the molybdenum bracket fixing plate (7).

3. The improved non-detachable back insulation device for heating elements for vacuum heat treatment furnaces according to claim 1, characterized in that: Two corresponding fixing holes are respectively arranged on the upper and lower end surfaces of the molybdenum bracket (1), and the fixing piece (8) is inserted into the fixing holes.

4. The improved non-detachable back insulation device for heating elements used in vacuum heat treatment furnaces according to claim 3, characterized in that: The fixing members (8) are respectively provided with mounting holes, and the fixing members (8) are fixed in the fixing holes by means of pins.

5. The improved non-detachable back insulation device for heating elements used in vacuum heat treatment furnaces according to claim 1, characterized in that: The support rod (5) is provided with a mounting hole, and the support rod (5) is fixed in the molybdenum sleeve (4) by a pin.

Images