CN2408124Y

CN2408124Y - Rotary continuous vacuum heat processing furnace

Info

Publication number: CN2408124Y
Application number: CN 99244337
Authority: CN
Inventors: 鲁斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-10
Filing date: 1999-09-10
Publication date: 2000-11-29
Anticipated expiration: 2009-09-10

Abstract

The utility model relates to a rotary continuous vacuum heat processing furnace, which is composed of a heating furnace body, a high temperature resistant furnace tube, a cooling water jacket, an opening support frame for the heating furnace body, a movable pulley for a heating furnace, a vacuum sealed device, a chain transmission device, a support bearing and a lifting platform with an adjustable angle. The utility model can continuously work for ten hours; Neodymium-iron-boron magnetic powder can be uniformly heated in a furnace; a water cooling system is reasonable; metal powder can be immediately cooled after discharged from the furnace, causing that crystal growth is uniform; the quality is increased.

Description

Rotary type continous vacuum heat treatment furnace

The utility model relates to a kind of rotary type continous vacuum heat treatment furnace, belongs to metal heat treatmet and kiln technical field.

In fast quenching neodymium iron boron (NdFeB) magnetic production process, the crystallization treating processes is arranged one, this process will be used vacuum heat treatment equipment, present heat treatment furnace mainly contains two kinds of forms, a kind of is the stainless steel conveyor belt formula, this mode is that the metal-powder that will handle is placed on the stainless steel conveyor belt, handle by the heating isothermal region, the defective of this kind method is that powder is placed on certain thickness is arranged on the travelling belt, it is inhomogeneous to be heated, and the consistence of quality product is bad, and the water-cooling system imperfection of this kind stove, the powder of just having handled can not be cooled off immediately, this is influential to product performance, and another kind is a tube furnace, and its mode of operation is earlier powder to be packed in the stainless steel pipe, boiler tube is inserted in the heating member, behind for some time constant temperature, tube furnace to be extracted out put into cold water rapidly and cool off, the characteristics of this mode are can not continuous production, make complex operation, the labour intensity height.

The purpose of this utility model is to sum up the relative merits of existing many metal-powder Equipment for Heating Processing, design a kind of rotary type continous vacuum heat treatment furnace, energy non-stop run 10 hours, NdFeB magnetic powder is heated evenly at stove, after coming out of the stove, can cool off immediately the reasonable metal-powder of water-cooling system, to fast quenching NaFeB and Fe ₃The crystal growth of B magnetic is even, and quality improves.

For reaching the purpose of foregoing invention, the utility model adopts following design to realize, shown in Fig. 1-5.It opens support (18), pedestal bearing (26), angle adjustable lifting gantry (24) formation by heating furnace body (6), high temperature resistant boiler tube (7), watercooling jacket (8), heating furnace body; Heating furnace body (6) is an annular, from vertical dimidiation portion, in heating unit is arranged, respectively there is the movable pulley (19) that can slide in orbit the front and back end, the one side has a pair of body of heater to open support (18), opens crank (15) and worm type of reduction gearing (16) makes it to open by heating furnace body; High temperature resistant boiler tube (7) inner chamber is equipped with the scraper plate that vertically rolls (17), two row scraper plates are mutually 180 ° of dislocation arrangements and are welded on the inwall of boiler tube, the boiler tube front end is connected with feeding storehouse (2), thermal stabilization shield plate (5) is housed in the front tube, the rear end is connected with watercooling jacket (8), the end of pipe has shielding baffle plate (14) that pipe end is shut, shielding baffle plate (14) is preceding, the tube wall hoop has discharge port (11), communicate with the interior pipe of watercooling jacket (8), angle adjustable lifting gantry (24) is the center with the platform fulcrum (10) on the operator's console (23), changes angle [alpha] with lifting platform screw rod (3) control lifting, motor (4) drives chain gearing (25), make high temperature resistant boiler tube (7) revolution, there is pedestal bearing (26) at the terminal watercooling jacket (8) of boiler tube position, and the boiler tube upper end is a pedestal bearing with a watt shape vaccum seal ring.

Watercooling jacket (8) has water-in (12) and water outlet (13), each is connected with water outlet water jacket (28) with the outside water inlet water jacket (27) that does not rotate of watercooling jacket (8), and vacuum sealing system has watt shape vaccum seal ring (22) at vacuum interface (21) and two ends to be prior art.

The hopper (9) of the loading hopper of stokehold end (1) and feeding storehouse (2) and stove rear end is a prior art all, is not described further.

Thermal stabilization shield baffle plate (5) structure is to be arranged by three stainless steel plate stacks to form, diameter is smaller than boiler tube (see among Fig. 1 7) diameter, for metal-powder is flow through from seam, be welded with two Small clamps on one block plate of the inside, use after heat shield plate just to be fixed on the powder scraper plate (17) of boiler tube by these two clips.

Now the principle of work with this equipment is described below:

At first, the powder that will handle is put into loading hopper, opening vacuum system vacuumizes entire equipment, simultaneously high temperature resistant boiler tube (7) is heated, when vacuum tightness and temperature reach requirement, open rotary electric machine (4), high temperature resistant boiler tube (7) is rotated, open the feed appliance (2a) of feeding storehouse (2) simultaneously, powder is entered in the boiler tube (7), because of boiler tube becomes inclined angle alpha with level, can change powder velocity of flow in boiler tube, in boiler tube so powder is moved by the scraper plate string trend water jacket that rolls, in the heating furnace body isothermal region, powder is heated processing, and heating furnace body (6) is made of two semicolumns, and the centre encases boiler tube, open the opener of crank (15) and worm-gear speed reducer (16) formation by process furnace, body of heater can be opened, body of heater can level be pulled out, and makes boiler tube be exposed to cooling rapidly under the normal temperature.In metal-powder enters watercooling jacket (8), metal-powder is cooled rapidly, the watercooling jacket front end becomes the outsourcing type to be connected with boiler tube, water coolant advances from water-in (12), go out from water outlet 13, the boiler tube end is shut by shielding baffle plate (14), and processed powder flows out from the terminal discharge port of boiler tube (11), enter at last in the discharge bucket (9), cooling once more after metal powder is handled in the discharge bucket, is opened heating furnace body (6) and pull out, make boiler tube be cooled to room temperature immediately, close the vacuum unit then, venting then is desirable material, and the cleaning body of heater, prepare operation next time.

Description of drawings:

Fig. 1 is the utility model front view;

Fig. 2 is watercooling jacket and feed opening diagrammatic cross-section;

Fig. 3 is heating furnace body folding condition figure;

Fig. 4 is high temperature resistant boiler tube front end thermal stabilization shield intralamellar part organigram;

Fig. 5 is the feed appliance figure in the feeding storehouse among Fig. 1.

Be compared with the prior art, the utility model has the advantage of:

1, stream time is long, and general work was greater than 10 hours;

2, metal dust is heated evenly in body of heater;

3, behind the metal dust process boiler tube thermal treatment zone, enter immediately water collar, make the temperature of powder Degree falls sharply, and more meets the step curve of metal heat treatmet temperature, makes the high conformity of product;

4, heat treatment complete after, heating furnace body can be opened, and makes boiler tube be exposed to immediately the normal temperature state, has greatly shortened the cool time of boiler tube, has also just shortened simultaneously and has got the material time, according to our test, to fast quenching NdFeB and Fe₃The crystallization treatment effect of B magnetic is fine, is embodied in raising Uniformity and the performance of product.

Embodiment: Fig. 1-the 5th, embodiment of the present utility model.

The utility model is mainly by the heating furnace body (6) that can open and pull out and the inboard boiler tube (7) of being with the scraper plate that rolls, the diaphragm thermoshield baffle plate at boiler tube (7) two ends, boiler tube (7) upper end and terminal hopper (1), the interior feed appliance of feeding storehouse (2) (2a) and discharge bucket (9), vacuum system and water-cooling system, the platform of adjustable-angle α (24), transmission mechanism constitutes, boiler tube is a stainless steel, boiler tube diameter 50-100mm, heat-resisting 600 ℃-900 ℃, process furnace is that refractory materials and steel are made, built-in heating element, external diameter are 400mm-500mm.

Claims

1, a kind of rotary type continous vacuum heat treatment furnace is characterized in that its internal heating body of heater (6), high temperature resistant boiler tube (7), watercooling jacket (8), heating furnace body unlatching support (18), pedestal bearing (26), angle adjustable lifting gantry (24) constitute; Heating furnace body (6) is an annular, from vertical dimidiation portion, in heating unit is arranged, respectively there is the movable pulley (19) that can slide in orbit the front and back end, the one side has a pair of body of heater to open support (18), opens crank (15) and worm type of reduction gearing (16) makes it to open by heating furnace body; High temperature resistant boiler tube (7) inner chamber is equipped with the scraper plate that vertically rolls (17), two row scraper plates are mutually 180 ° of dislocation arrangements and are welded on the inwall of boiler tube, the boiler tube front end is connected with feeding storehouse (2), thermal stabilization shield plate (5) is housed in the front tube, the rear end is connected with watercooling jacket (8), the end of pipe has shielding baffle plate (14) that pipe end is shut, shielding baffle plate (14) is preceding, the tube wall hoop has discharge port (11), communicate with the interior pipe of watercooling jacket (8), angle adjustable lifting gantry (24) is the center with the platform fulcrum (10) on the operator's console (23), changes angle [alpha] with lifting platform screw rod (3) control lifting, motor (4) drives chain gearing (25), make high temperature resistant boiler tube (7) revolution, there is pedestal bearing (26) at the terminal watercooling jacket (8) of boiler tube position, and the boiler tube upper end is a pedestal bearing with a watt shape vaccum seal ring.