CN210305764U

CN210305764U - Large-scale rotary furnace for tungsten powder reduction

Info

Publication number: CN210305764U
Application number: CN201920967876.1U
Authority: CN
Inventors: 刘邵生; 邹圣茂; 张小建; 李虹; 郭彬; 郭名亮; 皮志明
Original assignee: Ganzhou Boli Technology Co ltd
Current assignee: Ganzhou Boli Technology Co ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-04-14
Anticipated expiration: 2029-06-26

Abstract

The utility model provides a large-scale rotary furnace for tungsten powder reduction, including heating device, cooling device, rotate the reaction vessel who wears to locate between heating device and the cooling device, heating device and cooling device are worn out respectively at reaction vessel's both ends, reaction vessel is close to tip one side of heating device and is equipped with loading attachment, the discharge end of loading attachment communicates with reaction vessel's feed end, and the cover is equipped with sealing device outside the junction of loading attachment and reaction vessel, sealing device and tail gas processing apparatus pass through the pipeline and communicate, the outside cover of another port of reaction vessel is equipped with a sealed cylinder, sealed cylinder and reaction vessel movable seal cooperate, the bottom intercommunication of sealed cylinder is equipped with unloader, the sealed cylinder keeps away from the tip of reaction vessel and air feeder intercommunication; the automatic feeding device can realize automatic feeding, stir the raw materials, enable the raw materials to be in the same reduction condition for reaction, improve the product quality, provide sealing protection in the whole production process, and provide stable reduction atmosphere.

Description

Large-scale rotary furnace for tungsten powder reduction

Technical Field

The utility model relates to a tungsten powder reduction equipment field, more specifically relates to a large-scale rotary furnace is used in tungsten powder reduction.

Background

Tungsten is a rare high-melting-point metal, can improve the high-temperature hardness of steel, and has very wide application, and relates to the fields of mines, metallurgy, machinery, buildings, traffic, electronics, chemical engineering, light industry, textile, military industry, aerospace, science and technology and various industries, the performance (such as purity, granularity composition and the like) of tungsten powder mainly depends on reduction equipment and a reduction process, most of the existing reduction equipment adopts a reduction furnace structure, can only adopt boat-burning stepping production and cannot realize complete automatic feeding, and the production mode is that the tungsten powder is placed in a boat, the tungsten oxide powder with different thicknesses is different in the material layer thickness and the atmosphere in a furnace pipe, the granularity of the produced tungsten powder is also different, and the consistency of products is poor; and the existing equipment still has a lifting space in the aspect of sealing protection in the production process.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a large-scale rotary furnace is used in tungsten powder reduction is proposed, its novel structure can realize automatic feed, stirs, makes the raw materials be in the same reduction condition and reacts the raw materials, improves product quality, and whole production process provides sealed protection, provides stable reducing atmosphere.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a large-scale rotary furnace for tungsten powder reduction, which comprises a frame, a heating device and a cooling device which are arranged on the frame, a reaction container which is rotatably arranged between the heating device and the cooling device in a penetrating way, the reaction container is of a pipe body structure and is driven by a first motor to rotate around an axis, two ends of the reaction container are respectively arranged on the heating device and the cooling device in a penetrating way, one side of the end part of the reaction container, which is close to the heating device, is provided with a feeding device, the discharge end of the feeding device is communicated with the feed end of the reaction container, a sealing device is sleeved outside the joint of the feeding device and the reaction container, the sealing device is communicated with a tail gas treatment device through a pipeline, a sealing barrel is sleeved outside the other port of the reaction container, and is in movable sealing fit with the reaction container, the bottom of the sealing cylinder is communicated with a blanking device, and the end part of the sealing cylinder, far away from the reaction container, is communicated with a gas supply device.

The utility model discloses in the technical scheme of preferred, heating device includes a plurality of first bodys of concatenation in proper order, each first body is all installed in the frame, it is a plurality of the axis coincidence of first body, each the inner wall of first body with reaction vessel's outer wall shape looks adaptation, and slide to support and hold, each the inner wall of first body all is equipped with first double-layered chamber, heating device's top is erect be equipped with the gas-supply pipe of steam boiler intercommunication, each first double-layered chamber with the gas-supply pipe passes through the pipeline intercommunication, heating device's bottom is equipped with the collector pipe, each the first bottom of pressing from both sides the chamber all with the collector pipe passes through the pipeline intercommunication.

In the preferred technical solution of the present invention, the cooling device includes a second tube and a second clamping cavity disposed on an inner wall of the second tube, the second tube is fixedly mounted on the frame, and the inner wall of the second tube is adapted to the outer wall of the reaction vessel in shape and slidably supported; the bottom of the second clamping cavity is communicated with an external water supply pipe, and the top of the side wall of the second clamping cavity is communicated with a drain pipe.

In a preferred technical solution of the present invention, both ends of the reaction vessel are mounted on the frame through a bracket, and the reaction vessel traverses the heating device and the cooling device after being rotatably supported by the bracket; the outer wall of the reaction container between the heating device and the cooling device is fixedly provided with a first chain wheel, the first motor is fixedly installed on the rack, an output shaft of the first motor is provided with a second chain wheel, and the second chain wheel is in transmission connection with the first chain wheel through a chain.

In the preferred technical scheme of the utility model, a material blocking block is arranged at the port of one end of the reaction vessel close to the feeding device, a bearing is sleeved outside the material blocking block, and the outer wall of the bearing is matched with the inner wall of the reaction vessel; the feeding device comprises a charging bucket and a bucket cover arranged at the top of the charging bucket, a conveying pipe transversely arranged is arranged at the bottom of the charging bucket, a feeding hole is formed in the top of the conveying pipe inside the charging bucket, the other end of the conveying pipe extends towards the reaction container and penetrates through the reaction container, a material blocking block extends into the reaction container, a spiral stirring rod is arranged in the conveying pipe, and the spiral stirring rod is driven by a second motor.

In a preferred technical scheme of the present invention, the sealing device comprises a housing, and one end of the housing is sleeved on the end of the reaction vessel and movably connected through a sealing bearing; the other end of the shell is fixedly connected with the charging bucket, and the conveying pipeline penetrates through the shell; the bottom of casing is equipped with the gas vent, just the gas vent with tail gas processing apparatus passes through the pipeline intercommunication.

The utility model discloses in the technical scheme of preferred, tail gas processing apparatus is including cyclone, sack cleaner and the pulse dust collector that is linked together in proper order, the gas outlet and the tail gas collection tank of pulse dust collector pass through the pipeline intercommunication.

In a preferred technical scheme of the present invention, the sealing cylinder is a cylinder structure, and one end of the sealing cylinder is sleeved on the end of the reaction vessel and movably connected through a sealing bearing; the other end of the sealing cylinder is communicated with the gas supply device, and a feed inlet of the blanking device is communicated with the bottom of the sealing cylinder.

The utility model discloses in the technical scheme of preferred, air feeder is including the jar body that is used for gaseous transfer, the gas outlet of the jar body with sealed section of thick bamboo passes through the pipeline intercommunication, the lateral wall intercommunication of the jar body is equipped with many tracheas with outside gas holder intercommunication.

The utility model discloses in the technical scheme of preferred, unloader includes the collecting vessel, the top of collecting vessel with sealed bobbin base portion intercommunication, the feed opening department of collecting vessel is equipped with the ooff valve.

The utility model has the advantages that:

the utility model provides a large-scale rotary furnace for tungsten powder reduction, which has novel structure, and realizes the automatic reduction production of tungsten powder under the mutual cooperation of a reaction vessel, a heating device, a cooling device, a feeding device, a discharging device, an air supply device, a sealing device and a tail gas treatment device; the feeding device can realize automatic feeding, change the traditional manual feeding mode of the boat and improve the production efficiency; the reaction container is driven by the first motor to rotate, so that the raw materials are rolled and stirred, the raw materials are in the same reduction condition for reaction, and the product quality is improved; the sealing device and the sealing cylinder are arranged, so that the rotating reaction container can be sealed, the whole production process is protected in a sealing way, and a stable reducing atmosphere is provided; and the tail gas treatment device can filter and recover the tail gas after reaction, thereby reducing waste and cost.

Drawings

FIG. 1 is a schematic structural view of a large rotary kiln for tungsten powder reduction according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a heating device provided in an embodiment of the present invention;

fig. 3 is a schematic structural view of a cooling device provided in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a feeding device and a sealing device provided in an embodiment of the present invention.

In the figure:

100. a heating device; 110. a first pipe body; 120. a first clamping cavity; 130. a gas delivery pipe; 140. a water collection pipe; 200. a cooling device; 210. a second tube body; 220. a second clamping cavity; 300. a reaction vessel; 310. a first motor; 320. a material blocking block; 400. a feeding device; 410. a charging bucket; 420. a barrel cover; 430. a delivery pipe; 440. a helical agitator shaft; 450. a second motor; 500. a sealing device; 510. a housing; 520. an exhaust port; 600. a tail gas treatment device; 610. a cyclone dust collector; 620. a bag-type dust collector; 630. a pulse dust collector; 700. a sealing cylinder; 800. a blanking device; 810. a collection barrel; 820. an on-off valve; 900. a gas supply device; 910. and (5) a tank body.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1, the embodiment of the present invention discloses a large rotary furnace for tungsten powder reduction, comprising a frame, a heating device 100 and a cooling device 200 mounted on the frame, and a reaction container 300 rotatably inserted between the heating device 100 and the cooling device 200, wherein the reaction container 300 is in a tubular structure and is driven by a first motor 310 to rotate around an axis, two ends of the reaction container 300 respectively penetrate through the heating device 100 and the cooling device 200, a feeding device 400 is mounted on one side of the reaction container 300 near the end of the heating device 100, a discharging end of the feeding device 400 is communicated with a feeding end of the reaction container 300, a sealing device 500 is sleeved on an outer side of a connection between the feeding device 400 and the reaction container 300, the sealing device 500 is communicated with a tail gas treatment device 600 through a pipeline, an outer sealing barrel 700 is sleeved on the other end of the reaction container 300, the sealing cylinder 700 is in movable sealing fit with the reaction vessel 300, the bottom of the sealing cylinder 700 is communicated with a blanking device 800, and the end part of the sealing cylinder 700 far away from the reaction vessel 300 is communicated with a gas supply device 900.

The large-scale rotary furnace for tungsten powder reduction has a novel structure, and realizes automatic reduction production of tungsten powder under the mutual cooperation of the reaction vessel 300, the heating device 100, the cooling device 200, the feeding device 400, the discharging device 800, the gas supply device 900, the sealing device 500 and the tail gas treatment device 600; the arrangement of the feeding device 400 can realize automatic feeding, change the traditional manual feeding mode of the boat and improve the production efficiency; the reaction container 300 is driven by the first motor 310 to rotate, so that the raw materials are rolled and stirred, the raw materials are in the same reduction condition for reaction, and the product quality is improved; the sealing device 500 and the sealing cylinder 700 are arranged to movably seal the rotating reaction vessel 300, so that sealing protection is provided for the whole production process and a stable reducing atmosphere is provided; and the tail gas processing apparatus 600 can filter, retrieve the tail gas after the reaction, reduce the waste, reduce cost.

Further, as shown in fig. 2, the heating device 100 includes a plurality of first tube bodies 110 sequentially spliced, each first tube body 110 is installed on the rack, axes of the plurality of first tube bodies 110 are overlapped, an inner wall of each first tube body 110 is matched with an outer wall of the reaction vessel 300 in shape and slidably supported, the inner wall of each first tube body 110 is provided with a first clamping cavity 120, an air pipe 130 communicated with a steam boiler is erected above the heating device 100, each first clamping cavity 120 is communicated with the air pipe 130 through a pipeline, the bottom of the heating device 100 is provided with a water collecting pipe 140, and the bottom of each first clamping cavity 120 is communicated with the water collecting pipe 140 through a pipeline; the heating apparatus 100 is formed by splicing a plurality of first tubes 110, and can be conveniently increased or decreased according to the length of the reaction vessel 300 so as to provide a suitable heating condition; and the water collecting pipe 140 is provided to collect water condensed from the steam.

Further, as shown in fig. 3, the cooling device 200 includes a second tube 210 and a second clamping cavity 220 disposed on an inner wall of the second tube 210, the second tube 210 is fixedly mounted on the rack, and the inner wall of the second tube 210 is adapted to the outer wall of the reaction container 300 in shape and slidably abuts against the outer wall; the bottom of the second clamping cavity 220 is communicated with an external water supply pipe, and the top of the side wall of the second clamping cavity 220 is communicated with a drain pipe; the structural design can ensure that the reduced substances are cooled, and the subsequent collection and transportation are convenient; and it should be noted that the drain pipe extends to the water tank or the water pool, and forms cooling water circulation through the water pump, thereby reducing water consumption.

Further, both ends of the reaction vessel 300 are mounted on the rack through a bracket, and the reaction vessel 300 is rotatably supported by the bracket and then traverses the heating device 100 and the cooling device 200; a first chain wheel is fixedly arranged on the outer wall of the reaction container 300 between the heating device 100 and the cooling device 200, the first motor 310 is fixedly arranged on the rack, and an output shaft of the first motor 310 is provided with a second chain wheel which is connected with the first chain wheel through a chain in a transmission manner.

Further, as shown in fig. 4, a material blocking block 320 is arranged at a port of the reaction vessel 300 near one end of the feeding device 400, a bearing is sleeved outside the material blocking block 320, and an outer wall of the bearing is adapted to an inner wall of the reaction vessel 300; the feeding device 400 comprises a charging bucket 410 and a bucket cover 420 covering the top of the charging bucket 410, wherein a conveying pipeline 430 arranged transversely is arranged at the bottom of the charging bucket 410, a feeding hole is formed in the top of the conveying pipeline 430 in the charging bucket 410, the other end of the conveying pipeline 430 extends towards the reaction container 300 direction and penetrates through the material blocking block 320 to extend into the reaction container 300, a spiral stirring rod 440 is arranged in the conveying pipeline 430, and the spiral stirring rod 440 is driven by a second motor 450; the material blocking block 320 is mainly used for preventing the material from being discharged from one end of the inlet of the reaction vessel 300, and the influence on the normal reduction reaction process is avoided.

Further, as shown in fig. 4, the sealing device 500 includes a housing 510, and one end of the housing 510 is sleeved on the end of the reaction vessel 300 and movably connected with the reaction vessel through a sealing bearing; the other end of the shell 510 is fixedly connected with the charging bucket 410, and the conveying pipeline 430 penetrates through the shell 510; an exhaust port 520 is arranged at the bottom of the shell 510, and the exhaust port 520 is communicated with the tail gas treatment device 600 through a pipeline; the structure design can seal and protect the connection between the reaction vessel 30 and the delivery pipe 430, and provide a venting portion that does not affect the normal rotation of the reaction vessel 300, so that the overall structure is more reasonable.

Further, the tail gas treatment device 600 comprises a cyclone dust collector 610, a bag-type dust collector 620 and a pulse dust collector 630 which are sequentially communicated, and a gas outlet of the pulse dust collector 630 is communicated with the tail gas collection tank 640 through a pipeline; the structure design can carry out multi-stage dust removal treatment on the tail gas, and is convenient for subsequent collection and separation of the tail gas; the cyclone dust collector 610, the bag-type dust collector 620 and the pulse dust collector 630 can be purchased and used directly in the market.

Further, the sealing cylinder 700 is a cylinder-shaped structure, and one end of the sealing cylinder 700 is sleeved on the end of the reaction vessel 300 and movably connected through a sealing bearing; the other end of the sealing cylinder 700 is communicated with the gas supply device 900, and the feed inlet of the blanking device 800 is communicated with the bottom of the sealing cylinder 700; the sealing cylinder 700 is arranged to movably seal the end of the reaction vessel 300 without affecting the normal rotation of the reaction vessel 300, thereby preventing the air exchange between the inside and the outside of the reaction vessel 300 and avoiding affecting the normal reducing atmosphere.

Further, the gas supply device 900 comprises a tank body 910 for transferring gas, a gas outlet of the tank body 910 is communicated with the sealing cylinder 700 through a pipeline, and a plurality of gas pipes communicated with an external gas storage tank are arranged on the side wall of the tank body 910 in a communication manner; the tank body 910 is arranged for mixing or transferring gas, a plurality of gas pipes communicated with the side wall of the tank body 910 are respectively communicated with a plurality of gas storage tanks such as a hydrogen gas storage tank, a nitrogen gas storage tank, a carbon monoxide gas storage tank and the like, and when the plurality of gases are required to be mixed to participate in a reduction reaction, the corresponding gas is required to be introduced into the tank body 910 firstly, and then the gas is introduced into the reaction container 300 after being mixed in the tank body 910, so that a suitable atmosphere condition can be provided, and the reduction efficiency and the reduction.

Further, the blanking device 800 comprises a collecting barrel 810, the top of the collecting barrel 810 is communicated with the bottom of the sealing barrel 700, and a switching valve 820 is arranged at the blanking port of the collecting barrel 810.

The working principle is as follows:

when the device is used for tungsten powder reduction, the device is started, and the nitrogen gas storage tank supplies a certain amount of nitrogen gas into the reaction container 300 through the gas supply device, so that the air in the reaction container is discharged into the tail gas treatment device 600; then, the first motor 310 is started, the first motor 310 drives the reaction container 300 to rotate, the feeding device 400 is started simultaneously to feed materials into the reaction container 300, and the external steam supply is started, and the steam enters the first clamping cavity 120 along with the gas pipe 130 to supply heat to the materials in the reaction container 300; then, an external hydrogen storage tank supplies a proper amount of hydrogen gas into the reaction container 300 through a gas supply device, the reaction container 300 enables materials to continuously roll in the rotating process, the materials and the hydrogen gas move in opposite directions and are fully mixed, tungsten powder is generated through reaction and reduction, the generated tungsten powder moves towards one end of a discharge port of the reaction container 300 and is cooled when passing through the cooling device 200, and finally the tungsten powder is collected in a collection barrel 810 of the discharging device 800.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. A large-scale rotary furnace for tungsten powder reduction is characterized in that:

the device comprises a rack, a heating device (100) and a cooling device (200) which are arranged on the rack, a reaction container (300) which is rotatably arranged between the heating device (100) and the cooling device (200) in a penetrating manner is arranged, the reaction container (300) is of a pipe body-shaped structure and is driven by a first motor (310) to rotate around an axis, two ends of the reaction container (300) respectively penetrate through the heating device (100) and the cooling device (200), a feeding device (400) is arranged on one side of the end part, close to the heating device (100), of the reaction container (300), the discharge end of the feeding device (400) is communicated with the feed end of the reaction container (300), a sealing device (500) is sleeved on the outer side of the joint of the feeding device (400) and the reaction container (300), and the sealing device (500) is communicated with a tail gas treatment device (600) through a pipeline, the outside cover of another port of reaction vessel (300) is equipped with sealed section of thick bamboo (700), sealed section of thick bamboo (700) with reaction vessel (300) swing joint, the bottom intercommunication of sealed section of thick bamboo (700) is equipped with unloader (800), sealed section of thick bamboo (700) are kept away from the tip and the air feeder (900) intercommunication of reaction vessel (300).

2. The large-sized rotary furnace for tungsten powder reduction according to claim 1, characterized in that:

the heating device (100) comprises a plurality of first pipe bodies (110) which are sequentially spliced, each first pipe body (110) is installed on the rack, the axes of the plurality of first pipe bodies (110) are overlapped, the inner wall of each first pipe body (110) is matched with the outer wall of the reaction container (300) in shape and is in sliding support, a first clamping cavity (120) is formed in the inner wall of each first pipe body (110), a gas pipe (130) communicated with a steam boiler is erected above the heating device (100), each first clamping cavity (120) is communicated with the gas pipe (130) through a pipeline, a water collecting pipe (140) is arranged at the bottom of the heating device (100), and the bottom of each first clamping cavity (120) is communicated with the water collecting pipe (140) through a pipeline.

3. The large-sized rotary furnace for tungsten powder reduction according to claim 1, characterized in that:

the cooling device (200) comprises a second pipe body (210) and a second clamping cavity (220) arranged on the inner wall of the second pipe body (210), the second pipe body (210) is fixedly arranged on the rack, and the inner wall of the second pipe body (210) is matched with the outer wall of the reaction container (300) in shape and is in sliding and abutting-against; the bottom of the second clamping cavity (220) is communicated with an external water supply pipe, and the top of the side wall of the second clamping cavity (220) is communicated with a drain pipe.

4. The large-sized rotary furnace for tungsten powder reduction according to claim 1, characterized in that:

the two ends of the reaction container (300) are arranged on the rack through brackets, and the reaction container (300) traverses the heating device (100) and the cooling device (200) after being rotatably supported by the brackets; the outer wall of the reaction container (300) between the heating device (100) and the cooling device (200) is fixedly provided with a first chain wheel, the first motor (310) is fixedly installed on the rack, an output shaft of the first motor (310) is provided with a second chain wheel, and the second chain wheel is connected with the first chain wheel through chain transmission.

5. The large-sized rotary furnace for tungsten powder reduction according to claim 1, characterized in that:

a material blocking block (320) is arranged at a port of one end, close to the feeding device (400), of the reaction container (300), a bearing is sleeved on the outer side of the material blocking block (320), and the outer wall of the bearing is matched with the inner wall of the reaction container (300); loading attachment (400) are located including storage bucket (410) and lid bung (420) at storage bucket (410) top, the bottom of storage bucket (410) is equipped with conveying pipeline (430) of horizontal setting, storage bucket (410) is inside conveying pipeline (430) top is equipped with the feed inlet, the other end court of conveying pipeline (430) reaction vessel (300) direction is extended, and is run through keep off material piece (320) and stretch into in reaction vessel (300), be equipped with spiral puddler (440) in conveying pipeline (430), spiral puddler (440) are driven by second motor (450).

6. The large-sized rotary furnace for tungsten powder reduction according to claim 5, characterized in that:

the sealing device (500) comprises a shell (510), and one end of the shell (510) is sleeved at the end of the reaction vessel (300) and movably connected with the end of the reaction vessel through a sealing bearing; the other end of the shell (510) is fixedly connected with the charging bucket (410), and the conveying pipeline (430) penetrates through the shell (510); the bottom of casing (510) is equipped with gas vent (520), just gas vent (520) with exhaust gas treatment device (600) pass through the pipeline intercommunication.

7. The large-sized rotary furnace for tungsten powder reduction according to claim 1, characterized in that:

the tail gas treatment device (600) comprises a cyclone dust collector (610), a bag-type dust collector (620) and a pulse dust collector (630) which are sequentially communicated, wherein a gas outlet of the pulse dust collector (630) is communicated with a tail gas collecting tank (640) through a pipeline.

8. The large-sized rotary furnace for tungsten powder reduction according to claim 1, characterized in that:

the sealing cylinder (700) is of a cylinder-shaped structure, and one end of the sealing cylinder (700) is sleeved at the end part of the reaction container (300) and movably connected with the reaction container through a sealing bearing; the other end of the sealing cylinder (700) is communicated with the gas supply device (900), and a feed inlet of the blanking device (800) is communicated with the bottom of the sealing cylinder (700).

9. The large-sized rotary furnace for tungsten powder reduction according to claim 1, characterized in that:

the gas supply device (900) comprises a tank body (910) used for gas transfer, a gas outlet of the tank body (910) is communicated with the sealing cylinder (700) through a pipeline, and a plurality of gas pipes communicated with an external gas storage tank are arranged on the side wall of the tank body (910) in a communicated manner.

10. The large-sized rotary furnace for tungsten powder reduction according to claim 1, characterized in that:

the blanking device (800) comprises a collecting barrel (810), the top of the collecting barrel (810) is communicated with the bottom of the sealing barrel (700), and a switch valve (820) is arranged at the blanking port of the collecting barrel (810).