CN87200358U

CN87200358U - Middle temperature well-type energy-saving electric furnace for heat treating

Info

Publication number: CN87200358U
Application number: CN 87200358
Authority: CN
Inventors: 孙树真
Original assignee: SUN SHUZHEU
Current assignee: SUN SHUZHEU
Priority date: 1987-01-09
Filing date: 1987-01-09
Publication date: 1988-03-30

Abstract

The utility model relates to a middle temperature well-type energy-saving electric furnace for heat treating, which comprises two kinds of structures of a resistance band heating body structure and a resistance wire heating body structure. The inner part of the furnace wall of silicate lead fiber bricks of the resistance band heating body structure is bricked with a plurality of light brick rings used for hanging resistance band heating bodies. The inner part of the furnace wall of the silicate aluminum fiber bricks of the resistance wire heating body structure is hung with the standard components of the supporting boards of refractory bricks. The upper parts of the furnace walls of the two structures are respectively provided with a light in-brick convex ring. The utility model has the advantages of good energy-saving effect, long service life, easy maintenance, labor saving, time saving, money saving, etc. The utility model is suitable for the manufacture of new furnaces and the reformation of prior middle temperature well-type furnaces, bell-type furnaces and box-type furnaces.

Description

Middle temperature well-type energy-saving electric furnace for heat treating

The utility model is a kind of middle temperature (below 1000 ℃) well formula heat treatment Energy-saving electric stove, and it is departments such as metallurgy, machinery, light industry, electronics Equipments for Heating Processing commonly used.

The major defect of the present employed well formula heat treatment electric furnace of China is that power consumption is big.Some producer transforms resistance wire calandria electric furnace in order to economize on electricity, having produced a kind of as Harbin electric furnace factory is the resistance wire calandria electric furnace of liner with the light-weight brick, the structure of this stove is that the furnace wall liner is a light-weight brick, filling alumina silicate fibre heat-insulation layer in the middle of light-weight brick and furnace shell, on light brick, build the brick of putting that is useful on the supporting resistance wire, its iron plate bell studs with light-weight brick, also has some enterprises putting the alumina silicate fiber felt that sticks the 10-20 millimeter between brick.Through in economize on electricity, receiving certain effect after these transformations, but still exist the amount of holding of light-weight brick and heat conduction big, the unfavorable shortcoming of power savings, and the brick of putting that will support the resistance wire calandria when easily taking on workpiece breaks, cause this stove short service life, need take off the stove rebuilding in case damage, time-consuming expensive.

The design people had once applied for a utility model patent on April 1st, 1985, and the patent No. is 85200168, and this patent is applicable to batch-type furnace, adopted piled bricks or put brick supporting resistance wire calandria.

The purpose of this utility model is big, fragile in order to overcome existing shaft furnace power consumption, difficult maintenance, and the expensive shortcoming of taking a lot of work provides a kind of power savings good, long service life, the middle hot-well formula heat treatment Energy-saving electric stove of repairing easily.

The utility model has two kinds of structures: the one, and resistive band calandria structure is as shown in Figure 1, the furnace wall of this structure is made of alumina silicate fibre brick (3), interior several high-strength light brick rings (6) of building, on the light-weight brick ring, several holes is arranged, each pore area has hook (7) to be used to catch on resistive band calandria (8), and build on furnace wall top has a high-strength light brick inner protuberant ring (9) to be used to support the alumina silicate fibre brick on top and the weight of bell; Two resistance wire calandria structures as shown in Figure 2, the furnace wall of this structure also adopts alumina silicate fibre brick (3 α) to make, the interior standard component refractory brick support plate (10 α) of hanging is used to support the resistance wire calandria, refractory brick support plate (10 α) is connected on the end of insulator (7 α) by steel wire (6 α), the other end of insulator is connected with furnace shell (4 α) by resistance wire, the effect of insulator is to prevent that electric current passes to furnace shell, the danger of avoiding personnel to get an electric shock in the stove.The furnace bottom of two kinds of structures is a bottom brick, for heat-retaining electricity-saving pastes alumina silicate fiber felt inboard the squeezing of stove cover plate.

Description of drawings: Fig. 1 is a resistive band calandria structure 1-stove cover plate 2-bell 3-alumina silicate fibre brick 4-furnace shell 5-bottom brick 6-high-strength light brick ring 7-hook 8-resistive band calandria 9-light-weight brick inner protuberant ring.Fig. 2 is resistance wire calandria structure 1 α-stove cover plate 2 α-bell 3 α-alumina silicate fibre brick 4 α-furnace shell 5 α-bottom brick 6 α-steel wire 7 α-insulator 8 α-resistance wire hook 9 α-light-weight brick inner protuberant ring 10-refractory brick support plate.

Warm shaft furnace, bell furnace and batch-type furnace during the utility model is applicable to and manufactures or transform, the utlity model has following advantage with the prior art ratio: 1. the furnace wall of resistive band calandria structure and Resistant heating body structure all adopts the alumina silicate fibre brick to manufacture, its amount of stored heat and thermal conductivity factor are little, reach about 40% than power saving rate with former stove; 2. because the former stove of Thickness Ratio of the furnace wall of two kinds of structures is little by 1/5, and the temperature rise of stove table remains on below 40 ℃, thereby combustion space increases, and avoids taking on the worker Break refractory brick support plate or light-weight brick inner protuberant ring during part, increase the service life; 3. because Resistant heating body support plate adopts standard component, in case broken, only need to change new part half an hour, need not take off the stove rebuilding, saving of work and time saves money.

Claims

The utility model is a kind of Energy-saving electric stove, and the furnace wall of being made by furnace bottom, bell and alumina silicate fibre brick constitutes.It is characterized in that described Energy-saving electric stove has two kinds of versions: promptly

A, resistive band calandria structure are built the light-weight brick ring (6) of several supporting resistive band calandrias in furnace wall, have each Kong Youyi of several holes to be used to collude the hook of hanging the resistive band calandria on this light-weight brick ring (6), a light-weight brick inner protuberant ring (9) is arranged at furnace wall top.

B, resistance wire calandria structure, hang with the refractory brick support plate (10a) of supporting resistance wire calandria in the inboard of furnace wall, it is connected by resistance wire (8a) on the end of insulator (7a), and the other end of insulator (7a) links to each other with furnace shell (6a) by steel wire.A light-weight brick inner protuberant ring (9a) is also arranged at furnace wall top.