CN201227868Y

CN201227868Y - Polytetrafluorethylene sintering furnace

Info

Publication number: CN201227868Y
Application number: CNU200820063395XU
Authority: CN
Inventors: 张斯韦
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-12
Filing date: 2008-05-12
Publication date: 2009-04-29
Anticipated expiration: 2018-05-12

Abstract

A polytetrafluoroethylene sintering furnace comprises a temperature detection control device. A power mechanism is arranged inside an insulation furnace body, and the power mechanism comprises a motor, a coupling and a reducer, and the motor is connected with the reducer through the coupling; a rotary table comprises a multi-layer product tray and a bracket, the tray is fixed on the bracket, and the rotary table is detachably fixed on a supporting plate which is fixed on an output shaft of the reducer; the inner chamber of the furnace body is separated by an upper partition board, a lower partition board, and an air intake orifice plate into three cavity rooms including a bottom cabinet, a heating cabinet and a sintering cabinet which are arranged from bottom to top, the upper partition board and the lower partition board are arranged parallel to each other, and the air intake orifice plate is vertically arranged and connected with the upper partition board; the power mechanism is arranged inside the bottom cabinet, the rotary table is arranged inside the sintering cabinet, and an electrical heating element is arranged at the lower part of the heating cabinet; a furnace door is arranged on the face of the furnace body; a blower is arranged at the upper part of the heating cabinet; and an air outlet is formed at the top part of the furnace body. The sintering furnace has the advantages of convenient operation and maintenance, energy conservation and environment protection, and ensures that the sintering temperature can be controlled accurately, that temperatures of the sintering furnace are uniform, that the temperature rises according to heating slope, and that temperature rush can be avoided.

Description

The polytetrafluoroethylene (PTFE) sintering furnace

Technical field

The utility model relates to the heat-agglomerating stove, especially for the electrical heating type sintering furnace of polytetrafluoroethylene (PTFE) sintering.

Background technology

Polytetrafluoroethylene (PTFE) is a kind of macromolecular material, and is mobile poor, very easily decomposes, and produces etchant gas during decomposition.Suitable strict control forming temperature, temperature is controlled improper and is caused the hydrogen fluoride decomposition to be overflowed, and can cause animal and human poisoning in 2 square kilometres of scopes, and this material is that disposable finishing do not reclaimed leeway.

Sintering is an important step in the tetrafluoroethene product molding process, and it will cause that basic variation takes place the polytetrafluoroethylproducts products performance.The difference of process conditions such as sintering temperature, cooling velocity directly has influence on molecular weight, degree of crystallinity and the porosity of goods, and this three makes a difference to physics, machinery and the electric property of goods, sintering process is finished fine or notly simultaneously, also have influence on the size and the distribution of residual stress in the goods, so sintering process control is improper will to cause goods warpage, distortion and even cracking, seriously can cause severe toxicity to produce contaminated environment.

The utility model content

The purpose of this utility model provides uniform heat distribution in a kind of burner hearth, can accurately control sintering temperature, easy to operate polytetrafluoroethylene (PTFE) sintering furnace.

This novel purpose is realized by the following technical programs: a kind of polytetrafluoroethylene (PTFE) sintering furnace, comprise thermal insulation furnace body, and temp detecting controller is provided with actuating unit in the thermal insulation furnace body, and actuating unit is connected and composed through shaft coupling and decelerator by motor; The multi-layered product pallet is fixed on and constitutes rotating disk on the support, and rotating disk removably is fixed on the supporting disk, and supporting disk is fixed on the reducer output shaft; Two upper spacers that be arranged in parallel are divided into Lower Hold, three chambers of heating cabinet and sintering storehouse with lower clapboard and the vertical air intake orifice plate that is provided with, is connected with upper spacer from bottom to top with the body of heater inner chamber; Above-mentioned actuating unit is arranged in the Lower Hold, and rotating disk is arranged in the sintering storehouse, and electrical heating elements is arranged on the bottom of L shaped heating cabinet; Body of heater is positive to be provided with fire door with sintering bin location corresponding position; Blower fan is arranged on the top of L shaped heating cabinet; The air outlet that is communicated with the sintering storehouse is arranged at the body of heater top.

This polytetrafluoroethylene (PTFE) sintering furnace adopts modern integrated electronic technology, is the special-purpose agglomerating plant of polytetrafluoroethylene (PTFE) of new generation, and the technical characterstic of this equipment is as follows:

1, temp detecting controller: this equipment is equipped with 16 groups of 30 wave bands, presses the strict control of sintering temperature curve heating process, and the user can require according to the sintering process of different polytetrafluoroethylproducts products to select for use arbitrarily.The sintering furnace temperature evenly, temperature by the intensification slope rise, absolute guarantee not dash temperature,

2, power: the product rotating disk is rotary, and rotation steadily; Hot air circulation is the leafy formula circulating fan of high rotating speed, and air quantity is big, and the hot blast diffusion evenly.The product rotating disk can move under assigned temperature automatically, and hot air circulation blower can be set automatically and stop, and has eliminated original agglomerating plant complex operation, inhomogeneous, the unsettled phenomenon of burner hearth (being the sintering storehouse) heating-up temperature.

3, security of operation: when rotary system, hot air circulating system, heating components and parts (heating wire) and control system break down in the sintering process; can detect equipment fault and demonstration and warning automatically; one cover back-up system also can be installed; in case fault is arranged when prompting is reported to the police; equipment can automatically switch to and continue operation on the back-up system; assurance equipment normally moves, and the temperature strict protection.

4, operation is followed the tracks of: the equipment instrument also is furnished with output port, can realize that many sintering furnaces move and sintering simultaneously, can connect recording instrument without paper simultaneously the sintering overall process is followed the trail of.

This equipment is easy and simple to handle, energy-conserving and environment-protective, easy to maintenance, save manpower, be the new generation product of hommization, it can be applicable to the sintering and the test of other multiple material equally, can be widely used in factory, R﹠D institution and universities and colleges.

Description of drawings

Fig. 1 is the front view of the utility model body of heater;

Fig. 2 unloads the actuating unit that illustrates behind lower furnace door and the AD and the schematic diagram of product rotating disk among Fig. 1;

Fig. 3 is that Fig. 1 is along the Y direction profile of (being parallel to the body of heater frontal);

Fig. 4 Fig. 5 is respectively the stereogram of the different visual angles direction of product rotating disk shown in Figure 3.

The specific embodiment

Fig. 1 illustrates, and the front of thermal insulation furnace body 1 is provided with fire door 2, and the window 4 of observation is arranged on the fire door 2, opens the observation window, can observe running of (being in the sintering storehouse) rotating disk and product sintering situation in the burner hearth by transparent windows.There is AD 3 body of heater 1 front fire door 2 belows, open AD 3, can keep in repair actuating unit easily.Body of heater 1 be shaped as cuboid (not getting rid of other shape certainly) as the cylinder bodily form, the body of heater inner chamber is the cylinder bodily form.The body of heater front is provided with controller dial plate 5, can select heating temperature curve easily; Set heating-up temperature and heat time heating time, sintering temperature is by in addition omnidistance control of temp detecting controller.

Referring to Fig. 2, be provided with actuating unit in the thermal insulation furnace body 1, actuating unit is connected and composed through shaft coupling 6a and decelerator 7 by motor 6; Multi-layered product pallet 9a is fixed on support 9b and goes up formation rotating disk 9, and rotating disk 9 removably is fixed on the supporting disk 8, and supporting disk 8 is fixed on decelerator 7 output shafts; Two upper spacers that be arranged in parallel 13 are divided into Lower Hold, three chambers of heating cabinet and sintering storehouse with lower clapboard 12 and the vertical air intake orifice plate 11 that is provided with, is connected with upper spacer 13 from bottom to top with the body of heater inner chamber; Above-mentioned actuating unit is arranged in the Lower Hold, and rotating disk 9 is arranged in the sintering storehouse, and electrical heating elements 10 is arranged on the bottom of L shaped heating cabinet; Body of heater is positive to be provided with fire door 2 with sintering bin location corresponding position; Blower fan is arranged on the top of L shaped heating cabinet; The air outlet 14 that is communicated with the sintering storehouse is arranged at body of heater 1 top.

Referring to Fig. 3, the rotating speed of rotating disk 9 is 1.5 rev/mins.Temp detecting controller includes temperature sensor, and this temperature sensor is four, is installed in upper left, the lower-left in sintering storehouse, upper right, position, bottom right respectively.Blower fan is installed in the top of L shaped heating cabinet through Rubber shock-absorbing pad.

This is novel aspect global design:

1, instrument: the body of heater front is provided with the controller dial plate, adopts multistage temperature control program instrument, and it is that Sichuan Pu Zhou (SICHUAN PUZHOU) abbreviation 900 is through nine result of experiment repeatedly that character SP-900F implication appears in start.

2, control circuit: adopt the control of twin-stage IGCT, utilize instrument output signal control IGCT break-make to make the heating element heater heating, the controller PCB plate has comprised name (ZHANGSIWEI)

3, having utilized reducing motor to be output as 60 rev/mins connects another gearbox again to be converted to the burner hearth runing rest is 1.5 rev/mins.The gearbox axis is that pressure bearing can bear 1.5 tons of pressure.The runing rest top center utilizes the different metal body to connect transmission, keeps runing rest firm.

4, hot blast follows and adopts the bottom lock heating hot blast to be discharged with the leafy formula blower fan of high speed through the air channel, and hearth wall is the profile design, and hot blast is blown to formation wind rectification on the hearth wall, after the dial rotation with pneumatic in adjustment has kept stove temperature even.

5, the temperature test point is 4 points, and the distributing position in the sintering storehouse is upper left, bottom right, lower-left, upper right.

Claims

1, a kind of polytetrafluoroethylene (PTFE) sintering furnace comprises thermal insulation furnace body (1), and temp detecting controller is characterized in that: described thermal insulation furnace body is provided with actuating unit in (1), and actuating unit is connected and composed through shaft coupling (6a) and decelerator (7) by motor (6); Multi-layered product pallet (9a) is fixed on support (9b) and goes up formation rotating disk (9), and rotating disk (9) removably is fixed on the supporting disk (8), and supporting disk (8) is fixed on decelerator (7) output shaft; Two upper spacers that be arranged in parallel (13) are divided into Lower Hold, three chambers of heating cabinet and sintering storehouse with lower clapboard (12) and the vertical air intake orifice plate (11) that is provided with, is connected with upper spacer (13) from bottom to top with the body of heater inner chamber; Above-mentioned actuating unit is arranged in the Lower Hold, and rotating disk (9) is arranged in the sintering storehouse, and electrical heating elements (10) is arranged on the bottom of L shaped heating cabinet; Body of heater is positive to be provided with fire door (2) with sintering bin location corresponding position; Blower fan is arranged on the top of L shaped heating cabinet; The air outlet (14) that is communicated with the sintering storehouse is arranged at body of heater (1) top.

2, according to the described polytetrafluoroethylene (PTFE) sintering furnace of claim 1, it is characterized in that: described body of heater (1) is positive to be provided with AD (3) with the Lower Hold corresponding position.

3, according to the described polytetrafluoroethylene (PTFE) sintering furnace of claim 2, it is characterized in that: described fire door (2) is provided with observes window (4).

4, according to the described polytetrafluoroethylene (PTFE) sintering furnace of claim 3, it is characterized in that: described body of heater front is provided with controller dial plate (5).

5, according to the described polytetrafluoroethylene (PTFE) sintering furnace of claim 4, it is characterized in that: the rotating speed of described rotating disk (9) is 1.5 rev/mins.

6, according to the described polytetrafluoroethylene (PTFE) sintering furnace of claim 5, it is characterized in that: described temp detecting controller includes temperature sensor, and this temperature sensor is four, is installed in upper left, the lower-left in sintering storehouse, upper right, position, bottom right respectively.

7, according to the described polytetrafluoroethylene (PTFE) sintering furnace of claim 6, it is characterized in that: described blower fan is installed in the top of L shaped heating cabinet through Rubber shock-absorbing pad.