Pollution-resistant insulating support for heating belts

Abstract

The utility model discloses a kind of pollution-resistant insulation support for heating band, including ceramic insulating seat, fixed rod, support frame and limit rod, the fixed rod is installed on heating chamber support frame plate, ceramic insulating seat is installed on the fixed rod, for the insulation between the metal heating band for conducting electricity and non-conductive metal support piece, support frame is installed on the ceramic insulating seat, for supporting heating band, limit rod is installed on the support frame, for limiting the position of heating band, traditional combined insulation is designed as integral insulation, linear insulation distance between conducting metal and non-conducting metal is extended, the pollution resistance of insulation support is enhanced, the maintenance cycle of equipment is extended, production efficiency is improved, the deformation space of non-fixed support structure is provided for heating band heating extension, avoid equipment failure caused by heating band stress damage, facilitate later maintenance and vulnerable part replacement.

Description

Technical Field

[0001] This utility model relates to the field of vacuum furnace technology, specifically to an insulating support for a pollution-resistant heating element. Background Technology

[0002] As a key heating component of a vacuum sintering furnace, the reliable support structure of the heating tape is crucial for the stable operation of the equipment. Inside the furnace, the strip-shaped heating tape needs to be fixed to the support frame plate by multiple insulating supports. The traditional support structure involves drilling holes in the heating tape and installing a combined cylindrical insulating seat to separate the conductive and non-conductive metals. This structure has some shortcomings in use. In some heavily polluted sintering environments, such as the high-temperature metal powder sintering process, the additives in the metal powder will decompose and volatilize at high temperatures, forming pollutants. During evacuation, these pollutants will preferentially flow outward from the pores of the support structure. When they encounter cooling during the flow, they accumulate on the surface of the insulating components. When more and more pollutants accumulate on the insulating components, it can lead to short circuits in the conductive structure or even equipment failure, increasing the operating cost and downtime of the equipment.

[0003] Meanwhile, the metal heating tape elongates under high temperature conditions. Due to the difference in thermal expansion coefficients between the heating tape and the supporting frame plate, the fixed support connection restricts the elongation of the heating tape, resulting in stretching and twisting, which can easily damage the heating tape. Utility Model Content

[0004] The purpose of this invention is to provide a pollution-resistant insulating support for heating systems to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an insulating support for a pollution-resistant heating cable, comprising a ceramic insulating base, a fixing rod, a support frame, and a limiting rod. The fixing rod is installed on a heating chamber support frame plate, passes through holes in the support frame plate and the reflector screen, and is limited and fixed on both sides. A ceramic insulating base is installed on the fixing rod inside the thermal field, and a support frame is installed on the ceramic insulating base. The support frame is used to support the heating cable, and a limiting rod is installed on the support frame to limit the position of the heating cable.

[0006] Preferably, the ceramic insulating base is Y-shaped and has through holes running vertically through it for inserting the fixing rod. The two upper ends of the Y-shaped ceramic insulating base are connected to the support frame, and its lower end is connected to the fixing rod.

[0007] Preferably, the connection holes between the upper part of the ceramic insulating base and the support frame are two first transverse holes, and the connection holes between the lower part of the ceramic insulating base and the fixing rod are two second transverse holes. The first transverse holes and the second transverse holes are perpendicularly arranged on different planes, so that the conductive connectors and the support connectors are distributed on different surfaces, which is used to extend the insulation distance between the conductive metal and the non-conductive support metal. On the one hand, this structure can extend the insulation distance by distributing the conductive connectors and the support connectors on different surfaces through staggered arrangement of connectors. On the other hand, the connection with the support frame is set as two first transverse holes, which shortens the length of the downwardly bent plate connecting the support frame and the upper part of the ceramic insulating base, and increases the distance from other non-conductive metals. The extended insulation distance reduces the electric shock effect of contaminants, extends the maintenance cycle of the equipment, and improves production efficiency.

[0008] Preferably, the support frame and the ceramic insulating base are connected by a U-shaped pin, and the ceramic insulating base and the fixing rod are connected by a U-shaped pin. The U-shaped pin is made of molybdenum wire. The traditional connection method involves directly inserting a metal wire into a single hole and bending it to limit its position. The metal wire can rotate freely in the hole. If its rotation position is close to other metals, it is easy to cause a short circuit. The metal wire is bent into a U-shaped pin, inserted into two holes, and then bent to limit its position. Its position is fixed and will not rotate or move freely, thus avoiding metal-to-metal electrical contact.

[0009] Preferably, the upper end of the support frame limiting plate is bent upward to form a groove for supporting the heating element, wherein limiting rods are provided through both sides of the support frame limiting plate to limit the heating element in the groove.

[0010] Compared with the prior art, the beneficial effects of this utility model are: a pollution-resistant insulating support for heating cables, which designs the traditional combined insulating components into an integral irregular insulating component, extends the linear insulation distance between conductive and non-conductive metals, enhances the pollution resistance of the insulating support, extends the maintenance cycle of the equipment, improves production efficiency, and the non-fixed support structure provides a certain deformation space for the heating cable to extend under heat, avoids equipment failure caused by stress damage to the heating cable, and facilitates later maintenance and replacement of vulnerable parts. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a traditional insulating support structure for heating systems.

[0012] Figure 2 This is the main view of the overall structure of this utility model.

[0013] Figure 3 This is a left view of the overall structure of this utility model.

[0014] In the diagram: 1. Fixing rod; 2. Support frame plate; 3. Limiting molybdenum wire; 4. Ceramic insulating base; 5. U-shaped pin; 6. Support frame; 7. Heater; 8. Limiting rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 Traditional ceramic insulators are typically cylindrical composite structures installed on metal mounting rods to insulate the conductive metal heating element from the non-conductive metal support. Traditional structures have short insulation distances, and contaminants accumulating on the insulators can easily cause short circuits due to electrical connections between the metal parts. The integrated, irregularly shaped structure of the ceramic insulator base optimizes the traditional multi-piece ceramic composite structure into a single, directly connectable irregular structure. This enhances insulation and strengthens the material's rigidity, making it less prone to breakage. Furthermore, the heating element and support frame are not fixed, making replacement of easily damaged components such as the ceramic elements and heating element easier and faster.

[0017] Please see Figure 2-3 This utility model provides a technical solution: an insulating support for a pollution-resistant heating cable, comprising a ceramic insulating base 4, a fixing rod 1, a support frame 6, and a limiting rod 8. The fixing rod 1 is installed on the heating chamber support frame plate 2. The fixing rod 1 passes through holes in the support frame plate 1 and the reflector screen and is fixed on both sides by limiting molybdenum wire 3 and bolts. The ceramic insulating base 4 is installed on the inner side of the heating field of the fixing rod 1. The support frame 6 is installed on the ceramic insulating base 4. The support frame 6 is used to support the heating cable 7. The limiting rod 8 is installed on the support frame 6 to limit the position of the heating cable 7.

[0018] The fixing rod 1 is equipped with a limiting molybdenum wire 3. The fixing rod 1 passes through the holes on the support frame plate 1 and the reflector screen and is fixed on both sides by the limiting molybdenum wire 3 and bolts.

[0019] The ceramic insulating base 4 is Y-shaped and has through holes running vertically through it for inserting the fixing rod 1. The two upper ends of the Y-shaped ceramic insulating base 4 are connected to the support frame 6, and its lower end is connected to the fixing rod 1. Traditional ceramic insulating components are basically cylindrical composite structures. When installed on a metal fixing rod, they insulate the conductive metal heating element and the non-conductive metal support element. The traditional structure has a small insulation distance, and contaminants accumulated on the insulating element can easily cause electrical connections between the metals, resulting in a short circuit. The Y-shaped structure of the ceramic insulating base optimizes the traditional multi-piece ceramic composite structure into a single irregular structure that can be directly connected, thus enhancing the insulation effect. At the same time, the heating element and the support frame of this structure are not fixed, making it easier and faster to replace the ceramic components and other vulnerable parts such as the heating element.

[0020] The upper part of the ceramic insulating base 4 has two first transverse holes for connecting to the support frame 6, and the lower part of the ceramic insulating base 4 has two second transverse holes for connecting to the fixing rod 1. The first transverse holes and the second transverse holes are arranged perpendicularly and are not on the same plane. By staggering the connectors, the conductive connectors and the support connectors are distributed on different surfaces, which can lengthen their insulation distance. On the other hand, the connection with the support frame 6 is set as two first transverse holes, which shortens the length of the downward bent plate connecting the support frame 6 and the upper Y-shaped sides of the ceramic insulating base 4, and lengthens the distance from other non-conductive metals. The extended insulation distance reduces the electrical influence of contaminants, lengthens the maintenance cycle of the equipment, and improves production efficiency.

[0021] The support frame 6 is connected to the ceramic insulating base 4 by a U-shaped pin, and the ceramic insulating base 4 is connected to the fixing rod 1 by a U-shaped pin 5.

[0022] The ceramic insulating base 4 and the other components are connected by U-shaped pins 5. If a metal wire is directly inserted into a single hole and bent to limit its position, the metal wire can rotate freely in the hole. If its rotation position is close to other metals, it is easy to cause a short circuit. In this invention, the molybdenum wire is bent into a U-shaped pin 5, inserted into two holes, and then bent to limit its position. Its position is fixed and will not rotate or move at will, thus avoiding metal-to-metal electrical connection.

[0023] The U-shaped pin 5 is made of molybdenum wire.

[0024] The support frame 6 has two sides bent upwards into grooves to support the heating tape 7. Holes are punched in the bent plates on both sides and limit rods 8 are inserted and fixed to confine the heating tape 7 in the grooves. The grooves have a certain amount of movement along the length direction, which effectively solves the problem of tensile stress on the heating tape 7. In addition, there are no ceramic parts to block the heating tape 7, which increases the radiation area and improves the heating efficiency.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pollution-resistant insulating support for a heating band, comprising a ceramic insulating base, a fixing rod, a support bracket and a limiting rod, characterized in that: The fixing rod is installed on the heating chamber support frame plate. A ceramic insulating seat is installed on the fixing rod for insulation between the conductive metal heating cable and the non-conductive metal support. A support frame is installed on the ceramic insulating seat for supporting the heating cable. A limit rod is installed on the support frame for limiting the position of the heating cable.

2. The pollution-resistant, insulated support for a heat generating band of claim 1, wherein: The ceramic insulating base is Y-shaped and has through holes running vertically through it for inserting the fixing rod. The two upper ends of the Y-shaped ceramic insulating base are connected to the support frame, and the lower end is connected to the fixing rod.

3. The pollution-resistant, insulated support for a heat generating band of claim 2, wherein: The upper part of the ceramic insulating base has two first transverse holes for connecting with the support frame, and the lower part of the ceramic insulating base has two second transverse holes for connecting with the fixing rod. The first transverse holes and the second transverse holes are perpendicularly arranged on different planes, so that the conductive connector and the support connector are distributed on different surfaces, which is used to extend the insulation distance between the conductive metal and the non-conductive support metal.

4. The pollution-resistant, insulated support for a heat generating band of claim 3, wherein: The support frame and the ceramic insulating base are connected by a U-shaped pin, and the ceramic insulating base and the fixing rod are connected by a U-shaped pin.

5. The pollution resistant, insulated support for a heat generating band of claim 1, wherein: The upper end of the support frame limiting plate is bent upward to form a groove for supporting the heating element. Limiting rods are provided through both sides of the support frame limiting plate to limit the heating element in the groove.

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