Metal powder reduction rotary furnace

Abstract

The utility model relates to the technical field of metal powder production and processing, and particularly discloses a metal powder reduction rotary furnace which comprises a reduction furnace and a material uniformizing mechanism, the material uniformizing mechanism comprises two mounting plates arranged on the left side and the right side in the reduction furnace, and the opposite sides of the two mounting plates are fixedly connected with two inclined material guide grooves. By arranging the material uniformizing mechanism and the multiple material guiding grooves, the function of guiding metal powder is achieved, the metal powder entering the reduction furnace continuously flows downwards through guiding of the multiple material guiding grooves in sequence, then is discharged from the discharging port after being conveyed upwards through the spiral conveyor, and then returns to the interior of the uppermost material guiding groove again, circulation of the metal powder is achieved, and the metal powder recycling efficiency is improved. The metal powder is in a flowing active state, so that the contact area of hot air and reduction air with the metal powder can be effectively increased, the metal powder is reduced more thoroughly, the reduction quality is improved, and meanwhile, compared with a traditional material boat with a fixed size, the powder loading amount is greatly increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal powder production and processing technical field, specifically disclose a metal powder reduction rotary furnace. BACKGROUND

[0002] Metal powder is widely used as the key basic raw material of functional material and the production of various mechanical structural parts by powder metallurgy method, in order to meet the performance demand of metal powder metallurgy product, the oxygen content in metal powder needs to be controlled, and the oxygen content is an important index for measuring the performance of metal powder.For example, in the sputtering target industry, the oxygen content of raw material metal powder has a decisive influence on the final target performance, and reducing the oxygen content is beneficial to: 1, improving powder purity, stabilizing powder crystal structure, eliminating powder work hardening and improving pressing performance;2, activating powder particle interface, reducing sintering temperature and improving the density of sintered body.Reducing the oxygen content can improve the purity and conductivity of sputtering target and other comprehensive performance.

[0003] At present, metal powder is mainly produced by electrolysis method, mechanical crushing method and atomization method, in order to reduce the oxygen content and moisture in powder, the metal powder is mainly deoxidized by reduction furnace, the transmission mode of reduction furnace is mainly push boat type or mesh belt type, in the reduction process, hydrogen gas is introduced into the reduction furnace, the metal powder is loaded into each small boat, under the transmission action of the reduction furnace, the single boat enters the reduction furnace in turn and under the action of the reducing gas, the oxygen in the metal powder is reduced.The equipment required by the reduction device occupies a large area and has high investment, the resistance type is used, the heating time is long, the consumption of reducing gas is large, and the production cost is high.At the same time, in actual production, single layer boat is driven, in order to improve production efficiency, the powder loading capacity in the boat is increased, but the increase of powder thickness will agglomerate and block, affect the permeability of metal powder in the boat, hinder the contact between the powder at the bottom of the boat and the reducing gas, cause incomplete reduction of the powder at the bottom, produce color stratification phenomenon of metal powder, and further affect the reduction quality of the whole powder. UTILITY MODEL CONTENT

[0004] The utility model provides a metal powder reduction rotary furnace, makes metal powder be in flowing active state, thereby can effectively improve the contact area of hot air and reducing air and metal powder, makes metal powder reduction more completely, improves reduction quality, and compared with traditional fixed size boat, greatly increases powder loading capacity.

[0005] The utility model is realized in this way, a metal powder reduction rotary furnace, including reduction furnace;

[0006] The uniform material mechanism comprises two installation plates arranged on the left and right sides in the interior of the reduction furnace, two obliquely arranged material guide grooves are fixedly connected to the opposite sides of the installation plates, the material guide grooves are staggered distributed on the left and right sides, a movable material groove is arranged below the material guide grooves, a screw conveyor is arranged on the right side in the interior of the reduction furnace, a discharge port and a feeding port are arranged at the top and the bottom of the screw conveyor respectively, the other end of the discharge port is located above the uppermost material guide groove, and the other end of the feeding port is located below the movable material groove.

[0007] The discharging mechanism comprises a sliding rail fixedly connected to the left side of the inner wall of the reduction furnace, a sliding block slidingly connected to the outer wall of the sliding rail, and the movable material groove is fixedly connected to the front end face of the sliding block.

[0008] Preferably, the top of the reduction furnace is communicated with a feeding hopper, the top of the feeding hopper is movably connected with a cover body, and the bottom end of the feeding hopper is located directly above the discharge port.

[0009] Preferably, the top and the bottom end of the reduction furnace are respectively provided with an air inlet valve and an air outlet valve.

[0010] Preferably, the top end of the interior of the reduction furnace is provided with a temperature sensor and an air pressure sensor, the right side of the outer wall of the reduction furnace is fixedly connected with a pressure regulating pipe, and the outer wall of the pressure regulating pipe is provided with a pressure regulating valve.

[0011] Preferably, the two installation plates are fixed to the left side of the inner wall of the reduction furnace and the outer wall of the screw conveyor through a plurality of connecting springs, and the opposite sides of the two installation plates are both provided with a vibration motor.

[0012] Preferably, the screw conveyor, the electric push rod, the temperature sensor, the air pressure sensor and the vibration motor are electrically connected with an external control system.

[0013] Preferably, the inner wall of the material guide groove is coated with an epoxy ceramic wear-resistant coating.

[0014] The metal powder reduction rotary furnace has the advantages that:

[0015] By setting the uniform material mechanism, the plurality of material guide grooves play a role of guiding the metal powder, the metal powder entering the inside of the reduction furnace flows downward continuously through the guidance of the plurality of material guide grooves in turn, the metal powder at the lowermost part flows into the screw conveyor through the feeding port, after being upwardly conveyed through the screw conveyor, is discharged from the discharging port, and then returns to the inside of the uppermost material guide groove, so that the circulation of the metal powder is realized, the metal powder is in an active flowing state, the contact area of the hot air and the reduction air with the metal powder can be effectively improved, the reduction of the metal powder is more thorough, and the reduction quality is improved, and compared with the traditional fixed-size material boat, the powder loading capacity is greatly increased.

[0016] When the metal powder reduction is completed, the electric push rod is started to retract, so as to drive the sliding block to slide leftwards on the outer wall of the sliding rail, further drive the movable material groove to move leftwards, and make the end of the movable material groove be located above the discharging pipe, so that the metal powder is discharged from the discharging pipe, and the discharging is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, various elements or parts are not necessarily drawn according to the actual proportion.

[0018] Fig. 1 It is a sectional view of the whole structure of the present application;

[0019] Fig. 2 It is a sectional view of the whole structure of the present application;

[0020] Fig. 3 It is a sectional view of the whole structure of the present application;

[0021] In the drawings, 1 is a reduction furnace, 2 is a mounting plate, 3 is a material guide groove, 4 is a movable material groove, 5 is a screw conveyor, 6 is a discharging port, 7 is a feeding port, 8 is a sliding rail, 9 is a sliding block, 10 is an electric push rod, 11 is a discharging pipe, 12 is an inlet hopper, 13 is an air inlet valve, 14 is an air outlet valve, 15 is a pressure regulating pipe, 16 is a pressure regulating valve, 17 is a temperature sensor, 18 is an air pressure sensor, 19 is a connecting spring, and 20 is a vibration motor. DETAILED DESCRIPTION

[0022] The present application will be further described below in conjunction with the drawings and specific embodiments, so as to help understand the content of the present application. The methods used in the present application are conventional methods unless otherwise specified; the raw materials and devices used are conventional commercially available products unless otherwise specified.

[0023] Please refer to Figs. 1-3The utility model provides a metal powder reduction rotary furnace, including reduction furnace 1,

[0024] The material uniform mechanism includes two installation plates 2 arranged on the left and right sides in the reduction furnace 1, and two inclined material guide grooves 3 are fixedly connected to the opposite sides of the two installation plates 2, the material guide grooves 3 on the left and right sides are staggered, and a movable material groove 4 is arranged below the material guide grooves 3, the material uniform mechanism further includes a screw conveyor 5 arranged on the right side in the reduction furnace 1, and a discharge port 6 and a feeding port 7 are arranged at the top and the bottom of the screw conveyor 5 respectively, the other end of the discharge port 6 is located above the uppermost material guide groove 3, and the other end of the feeding port 7 is located below the movable material groove 4.

[0025] The material discharge mechanism includes a sliding rail 8 fixedly connected to the left side of the inner wall of the reduction furnace 1, a sliding block 9 slidingly connected to the outer wall of the sliding rail 8, and the movable material groove 4 is fixedly connected to the front end face of the sliding block 9, an electric push rod 10 is installed on the left side of the outer wall of the reduction furnace 1, the output end of the electric push rod 10 is fixedly connected to the sliding block 9, and a discharge pipe 11 is fixedly connected to the bottom of the reduction furnace 1.

[0026] In the embodiment, the material uniform mechanism is arranged, the material guide grooves 3 play a guiding role for the metal powder, the metal powder entering the reduction furnace 1 flows downward in sequence through the guidance of the material guide grooves 3, the metal powder at the lowermost position enters the screw conveyor 5 through the feeding port 7, is conveyed upward through the screw conveyor 5, is discharged from the discharge port 6, and then returns to the uppermost material guide groove 3, so that the circulation of the metal powder is realized, the metal powder is in an active flowing state, the contact area between the hot air, the reduction air and the metal powder can be effectively improved, the reduction of the metal powder is more complete, the reduction quality is improved, and the powder loading capacity is greatly increased compared with a traditional fixed-size material boat.

[0027] When the metal powder reduction is completed, the electric push rod 10 is started to retract, so that the sliding block 9 slides leftward on the outer wall of the sliding rail 8, the movable material groove 4 is further moved leftward, the end of the movable material groove 4 is located directly above the discharge pipe 11, and the metal powder is discharged from the discharge pipe 11.

[0028] As a technical optimization scheme of the utility model, the top of the reduction furnace 1 is communicated with a feeding hopper 12, the top of the feeding hopper 12 is movably connected with a cover, and the bottom end of the feeding hopper 12 is located directly above the discharge port 6.

[0029] In the embodiment, the bottom end of the feeding hopper 12 is located directly above the discharge port 6, the metal powder is placed in the reduction furnace 1 through the feeding hopper 12, the metal powder falls in the discharge port 6, and then continuously flows downward.

[0030] The top and bottom end of the reduction furnace 1 are respectively provided with an air inlet valve 13 and an air outlet valve 14.

[0031] In the embodiment, the top and bottom end of the reduction furnace 1 are respectively provided with an air inlet valve 13 and an air outlet valve 14, and the flow direction of the reduction gas (hydrogen) is from the air inlet valve 13 at the top to the air outlet valve 14 at the bottom.

[0032] As a technical optimization scheme of the utility model, the inside top end of the reduction furnace 1 is provided with a temperature sensor 17 and a gas pressure sensor 18, and the outer wall of the reduction furnace 1 is fixedly connected with a pressure regulating pipe 15 on the right side, and the outer wall of the pressure regulating pipe 15 is provided with a pressure regulating valve 16.

[0033] In the embodiment, the temperature sensor 17 and the gas pressure sensor 18 can monitor the internal temperature and gas pressure of the reduction furnace 1 in real time, so that the heating temperature can be adjusted, and the gas pressure in the furnace can be controlled to be stable through the pressure regulating valve 16.

[0034] As a technical optimization scheme of the utility model, the two mounting plates 2 are fixed to the inner wall left side of the reduction furnace 1 and the outer wall of the screw conveyor 5 through a plurality of connecting springs 19, and the opposite sides of the two mounting plates 2 are both provided with a vibration motor 20.

[0035] In the embodiment, the mounting plate 2 is fixedly installed through the connecting spring 19, and the vibration motor 20 drives the whole mounting plate 2 to vibrate, further drives a plurality of material guide grooves 3 to vibrate, so that the metal powder can be prevented from adhering to the inside of the material guide groove 3, and the normal operation of the equipment is ensured.

[0036] As a technical optimization scheme of the utility model, the screw conveyor 5, the electric push rod 10, the temperature sensor 17, the gas pressure sensor 18 and the vibration motor 20 are electrically connected with an external control system.

[0037] In the embodiment, the external control system can receive the signals of the temperature sensor 17 and the gas pressure sensor 18, and can control the screw conveyor 5, the electric push rod 10 and the vibration motor 20 to work conveniently.

[0038] As a technical optimization scheme of the utility model, the inner wall of the material guide groove 3 is coated with epoxy ceramic wear-resistant paint.

[0039] In the embodiment, the inner wall of the material guide groove 3 is coated with epoxy ceramic wear-resistant paint, so that the inner wall of the material guide groove 3 is more smooth and wear-resistant, the metal powder is prevented from being bonded, and the service life is prolonged.

[0040] The working principle and use process of the utility model: through the hopper 12, metal powder is placed into the reduction furnace 1, the reduction furnace 1 is started to heat, reduction gas (hydrogen) flow direction is by the gas inlet valve 13 of top, then is discharged through the exhaust valve 14 of bottom, metal powder falls in the discharge port 6, then flows into the most upper guide chute 3, metal powder flows down continuously by the guidance of multiple guide chutes 3 in turn, flows to the most lower metal powder through the feed port 7 into the screw conveyor 5, after being conveyed upwards through the screw conveyor 5, then is discharged from the discharge port 6, then returns to the most upper guide chute 3, realizes the circulation of metal powder, makes metal powder in flowing active state, thereby can effectively improve the contact area of hot air and reduction air with metal powder, after the reduction of metal powder ends, the electric push rod 10 is started to contract, thereby drives the sliding block 9 to slide left on the outer wall of slide rail 8, further drives the movable chute 4 to move left, makes the end of movable chute 4 be located above the discharge pipe 11, thereby makes metal powder all discharge from the discharge pipe 11, and the discharge is convenient.

[0041] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle" is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0042] The above-mentioned is only the specific embodiment of the utility model, and cannot limit the range of the utility model, so the replacement of equivalent components or equivalent changes and modifications made according to the patent protection range of the utility model should still belong to the scope covered by the claims of the utility model.

Claims

1. A rotary furnace for reducing metal powder, characterized in that: Including reduction furnace (1); The material leveling mechanism includes two mounting plates (2) set on the left and right sides inside the reduction furnace (1). Two inclined guide troughs (3) are fixedly connected to the opposite side of the two mounting plates (2). Multiple guide troughs (3) are staggered on the left and right sides. A movable material trough (4) is set below the multiple guide troughs (3). The material leveling mechanism also includes a screw conveyor (5) set on the right side inside the reduction furnace (1). The top and bottom of the screw conveyor (5) are respectively provided with a discharge port (6) and a feed port (7). The other end of the discharge port (6) is located above the uppermost guide trough (3), and the other end of the feed port (7) is located below the movable material trough (4). The discharge mechanism includes a slide rail (8) fixedly connected to the left side of the inner wall of the reduction furnace (1), a slider (9) slidably connected to the outer wall of the slide rail (8), a movable material trough (4) fixedly connected to the front end face of the slider (9), an electric push rod (10) installed on the left side of the outer wall of the reduction furnace (1), the output end of the electric push rod (10) fixedly connected to the slider (9), and a discharge pipe (11) fixedly connected to the bottom of the reduction furnace (1).

2. The metal powder reduction rotary furnace according to claim 1, characterized in that: The top of the reduction furnace (1) is connected to a feed hopper (12), the top of the feed hopper (12) is movably connected to a cover, and the bottom of the feed hopper (12) is located directly above the discharge port (6).

3. The metal powder reduction rotary furnace according to claim 1, characterized in that: The reduction furnace (1) is provided with an air inlet valve (13) and an exhaust valve (14) at the top and bottom respectively.

4. The metal powder reduction rotary furnace according to claim 2, characterized in that: A temperature sensor (17) and a pressure sensor (18) are installed at the top of the inside of the reduction furnace (1). A pressure regulating pipe (15) is fixedly connected to the right side of the outer wall of the reduction furnace (1). A pressure regulating valve (16) is installed on the outer wall of the pressure regulating pipe (15).

5. A metal powder reduction rotary furnace according to claim 4, characterized in that: The two mounting plates (2) are respectively fixed to the left side of the inner wall of the reduction furnace (1) and the outer wall of the screw conveyor (5) by multiple connecting springs (19). Vibration motors (20) are installed on the opposite sides of the two mounting plates (2).

6. The metal powder reduction rotary furnace according to claim 5, characterized in that: The screw conveyor (5), electric push rod (10), temperature sensor (17), air pressure sensor (18) and vibration motor (20) are all electrically connected to the external control system.

7. The metal powder reduction rotary furnace according to claim 1, characterized in that: The inner wall of the feed trough (3) is coated with epoxy ceramic wear-resistant coating.

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