阅读说明：本技术 一种加热炉内加热带的固定结构 (Fixing structure of heating belt in heating furnace ) 是由 阮连富 滕广力 李林 于 2020-12-15 设计创作，主要内容包括：一种加热炉内加热带的固定结构,所述的加热带通过多个支撑架和多个保形架固定在加热炉的内壁上,所述的支撑架含有U型支架和支撑柱,所述的U型支架与加热带的宽度匹配,U型支架的开口端设有连接杆,U型支架的另一端外侧设有背夹,所述的支撑柱的一端与背夹绝缘连接,支撑柱的另一端与加热炉的内壁固定,所述的保形架含有保形杆和绝缘夹,绝缘夹由两根平行的绝缘管及绝缘端盖组成,绝缘夹的两端通过L形角片与保形杆连接,保形架的保形杆通过支脚固定在加热炉的内壁上,保形杆的长度方向垂直于加热带的长度方向,保形架的绝缘夹将相邻两个加热带夹持定位。(A fixing structure of a heating belt in a heating furnace is characterized in that the heating belt is fixed on the inner wall of the heating furnace through a plurality of supporting frames and a plurality of shape-retaining frames, the support frame comprises a U-shaped support and a support column, the width of the U-shaped support is matched with that of the heating belt, a connecting rod is arranged at the opening end of the U-shaped support, a back clip is arranged at the outer side of the other end of the U-shaped support, one end of the supporting column is connected with the back clamp in an insulating way, the other end of the supporting column is fixed with the inner wall of the heating furnace, the shape-preserving frame comprises a shape-preserving rod and an insulating clamp, the insulating clamp is composed of two parallel insulating tubes and an insulating end cover, two ends of the insulating clamp are connected with the shape-preserving rod through L-shaped angle pieces, the shape-preserving rod of the shape-preserving frame is fixed on the inner wall of a heating furnace through support legs, the length direction of the shape-preserving rod is perpendicular to the length direction of a heating belt, and the insulating clamp of the shape-preserving frame clamps and positions two adjacent heating belts.)

1. A fixing structure of a heating belt in a heating furnace is characterized in that the heating belt is parallelly arranged on the inner wall of the heating furnace and is fixed on the inner wall of the heating furnace through a plurality of supporting frames and a plurality of shape-preserving frames, each supporting frame comprises a U-shaped support and a supporting column, the width of each U-shaped support is matched with that of the heating belt, a connecting rod is arranged at the opening end of each U-shaped support, a back clamp is arranged on the outer side of the other end of each U-shaped support, one end of each supporting column is connected with the back clamp in an insulating mode, a dust cover is arranged at the joint of each supporting column and the back clamp, the other end of each supporting column is fixed on the inner wall of the heating furnace, each shape-preserving frame comprises a shape-preserving rod and an insulating clamp, each insulating clamp comprises two parallel insulating tubes and an insulating end cover, the two ends of each insulating clamp are connected with the shape-preserving, the length direction of the shape-keeping rod is perpendicular to the length direction of the heating belts, and the insulating clamp of the shape-keeping frame clamps and positions two adjacent heating belts.

2. The fixing structure of the heating belt in the heating furnace according to claim 1, wherein the supporting pillar is provided with a lateral connection hole, and the supporting pillar is connected with the back clip of the U-shaped bracket through an insulating bush and a lateral connection rod.

3. The fixing structure of the heating belt in the heating furnace according to claim 1, wherein both ends of the L-shaped corner piece are connected to both ends of the insulating clip and the shape-retaining bar through insulating bushes, respectively.

4. The fixing structure of the heating belt in the heating furnace according to claim 1 or 3, wherein the insulating tube of the insulating clamp has a core rod therein, and a dustproof sleeve is further sleeved outside the insulating tube, the dustproof sleeve is a multi-section sleeve made of an insulating material, and a stepped hole is formed in an inner wall of each section of the dustproof sleeve.

Technical Field

The application relates to the field of metal heat treatment, in particular to a fixing structure of a heating belt in a heating furnace.

Background

When the metal part is heated, the temperature of the heating chamber needs to be maintained at a high temperature for a long time, and then the temperature is rapidly reduced, so that the heat treatment operation of the metal part is completed. Therefore, the heating belt and the insulating structure in the heating furnace need to bear severe temperature change repeatedly, the fixed structure of the heating belt in the prior art is difficult to bear the temperature change, and the service life of the heating belt is easily influenced due to the short service life of the fixed structure; in addition, the service life of the fixed insulation structure of the heating belt is short due to evaporation and deposition of air in the furnace and impurities on the surface of metal. The reasons for the short service life of the common insulating structure are as follows: (1) the heating belt deforms at high temperature and is conducted close to the heating belt or conducted with the furnace body; (2) the working temperature in the equipment is very high, and a single-stage common insulating structure is easy to lose efficacy; (3) the equipment heats the indoor air, the workpiece and the impurities on the surface of the heating belt at high temperature to evaporate, and after the equipment is cooled, the impurity dust is deposited on the insulating layer of the heating belt. After the process is repeated, the deposition layer is conducted with the support, so that the heating belt is conducted with the furnace body, and the insulation structure is failed or the insulation resistance is unstable. Asbestos, mica, ceramics, and the like are often used as insulating structural materials for heat treatment heating apparatuses. Wherein the alumina ceramic has better insulation and high temperature resistance.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a fixing structure of a heating belt in a heating furnace, which can be used for a large-scale high-temperature heating furnace in a sealed environment.

A fixing structure of a heating belt in a heating furnace is characterized in that the heating belt is parallelly arranged on the inner wall of the heating furnace and is fixed on the inner wall of the heating furnace through a plurality of supporting frames and a plurality of shape-preserving frames, each supporting frame comprises a U-shaped support and a supporting column, the width of each U-shaped support is matched with that of the heating belt, a connecting rod is arranged at the opening end of each U-shaped support, a back clamp is arranged on the outer side of the other end of each U-shaped support, one end of each supporting column is connected with the back clamp in an insulating mode, a dust cover is arranged at the joint of each supporting column and the back clamp, the other end of each supporting column is fixed on the inner wall of the heating furnace, each shape-preserving frame comprises a shape-preserving rod and an insulating clamp, each insulating clamp comprises two parallel insulating tubes and an insulating end cover, the two ends of each insulating clamp are connected with the shape-preserving, the length direction of the shape-keeping rod is perpendicular to the length direction of the heating belts, and the insulating clamp of the shape-keeping frame clamps and positions two adjacent heating belts.

The support column is provided with a transverse connecting hole and is connected with a back clamp of the U-shaped support through an insulating bush and a transverse connecting rod.

Two ends of the L-shaped angle piece are respectively connected with two ends of the insulating clamp and the shape-preserving rod through insulating bushings.

The insulating clamp is characterized in that a core rod is arranged in an insulating tube of the insulating clamp, a dustproof sleeve is further sleeved on the outer side of the insulating tube and is a multi-section sleeve made of insulating materials, and a step hole is formed in the inner wall of each section of dustproof sleeve.

The beneficial effect of this application is: (1) the insulation layers between the heating belts of the heating furnace wall of the secondary equipment are in multiple stages, so that the insulation reliability is greatly improved; (2) the insulating structure support adopts molybdenum-lanthanum alloy as a framework, the framework can resist temperature of more than 1500 ℃, and meanwhile, the framework has good cold and hot state strength and is easy to manufacture and install; (3) the No. 99 alumina ceramic is adopted as an insulating part, has very good high temperature resistance, high temperature toughness and high temperature rigidity, and can also obviously reduce the attachment of impurity and dust.

The invention is described in further detail below with reference to the accompanying drawings of embodiments.

Drawings

Fig. 1 is a schematic view of a supporting frame structure.

Fig. 2 is a schematic cross-sectional view of fig. 1.

FIG. 3 is a schematic view of a conformal frame structure.

FIG. 4 is a schematic view of conformal frame end connections.

Fig. 5 is a schematic longitudinal cross-sectional view of an insulating tube.

FIG. 6 is a schematic view showing a fixing structure of a heating belt in the heating furnace.

The numbering in the figures illustrates: the device comprises a heating furnace 1, a heating belt 2, a 3U-shaped support, a 4 back clamp, 5 support columns, 6 connecting rods, 7 transverse connecting rods, 8 dust covers, 9 conformal rods, 10 insulating pipes, 11 insulating end covers, 12L-shaped corner pieces, 13 support legs, 14 core rods, 15 insulating bushes, 16 dust-proof sleeves and 17 step holes.

Detailed Description

Referring to the attached drawings, according to the fixing structure of the heating belt in the heating furnace, the heating belt 2 is arranged on the inner wall 1 of the heating furnace in parallel, the heating belt 2 is fixed on the inner wall 1 of the heating furnace through a plurality of supporting frames and a plurality of shape-retaining frames, each supporting frame comprises a U-shaped support 3 and a supporting column 5, the U-shaped support 3 is matched with the heating belt 2 in width, a connecting rod 6 is arranged at the opening end of the U-shaped support 3, a back clamp 4 is arranged on the outer side of the other end of the U-shaped support 3, one end of each supporting column 5 is connected with the back clamp 4 in an insulating mode, a transverse connecting hole is formed in each supporting column 5, and the supporting columns 5 are connected with the back clamps 4 of the U-shaped. In order to prevent dust accumulation, a dust cover 8 is arranged at the joint of the support column 5 and the back clamp, and the other end of the support column 5 is fixed with the inner wall 1 of the heating furnace. The shape-preserving frame comprises a shape-preserving rod 9 and an insulating clamp, the insulating clamp consists of two parallel insulating tubes 10 and an insulating end cover 11, two ends of the insulating clamp are connected with the shape-preserving rod 9 through an L-shaped angle piece 12 and an insulating bush 15, the insulating bush 15 is also arranged between the L-shaped angle piece 12 and the shape-preserving rod 9, the shape-preserving rod 12 of the shape-preserving frame is fixed on the inner wall 1 of the heating furnace through a support leg 13, the length direction of the shape-preserving rod 9 is perpendicular to the length direction of the heating belts 2, and the insulating clamp of the shape-preserving frame clamps and positions the two adjacent heating belts 2.

In practice, the transverse connecting rods 7 and the core rods 14, the connecting rods 6 and the conformal rods 9 are preferably selected from a molybdenum rod with high temperature resistance.

A core rod 14 is arranged in an insulating tube 10 of the insulating clamp, a dustproof sleeve 16 is further sleeved on the outer side of the insulating tube, the dustproof sleeve 16 is a multi-section sleeve made of insulating materials, and a step hole 17 is formed in the inner wall of each section of dustproof sleeve.

In the implementation, the insulating parts such as the insulating tube 10, the insulating end cover 11 and the dust-proof sleeve 16 are preferably made of alumina ceramic with the purity of 99#, and have very good high-temperature resistance, high-temperature toughness and high-temperature rigidity.

According to the heating chamber, a long strip-shaped heating belt is reliably and fixedly installed along the shape (such as a cylinder and a square) of the inner wall of the heating chamber through a uniformly distributed supporting structure and a shape-preserving structure on the inner wall of the closed heating chamber, and two ends of the heating belt which is connected in series are connected with a power supply positive electrode and a power supply negative electrode of the heating chamber through binding posts; through the fixed knot structure of this application, the heating band keeps the safety clearance with heating chamber inner wall, keeps the safety clearance between the heating band, and the clearance is stable under the high temperature relatively, and the fixed knot through this application constructs reliably insulating between heating band and the heating chamber inner wall simultaneously, and the fixed knot of this application constructs to have shape preserving and supporting role concurrently to the heating band.

The support frame and the shape-preserving clamp are respectively of independent structures, and the arrangement number can be increased or decreased according to the situation so as to ensure the optimal use effect. The retaining clips and the supporting structures are arranged in a staggered manner; each clip can retain two adjacent heating strips while the support structure retains only one heating strip at a time.

The heating belt is positioned on the inner wall of the heating furnace by using the fixing structure of the application, and after the heating belt is electrified, the first possible path for the current to flow between the heating belt and the heating chamber is as follows: the heating belt, the U-shaped bracket, the transverse connecting rod 7, the insulating sleeve, the supporting column and the inner wall of the heating chamber; the second possible path for current flowing between the heating belt and the heating chamber is the heating belt, the dustproof sleeve, the insulating tube, the insulating end cover, the insulating bush, the corner piece, the insulating bush, the conformal rod and the support leg, and both paths can ensure the insulativity of the inner wall of the heating chamber, and meanwhile, the dustproof cover, the dustproof sleeve and the insulating end cover can effectively prevent impurities and dust from depositing on the insulativity.