Efficient carbonization furnace for tungsten powder production

Abstract

The invention discloses an efficient carbonization furnace for tungsten powder production, and relates to the field of tungsten powder production, the efficient carbonization furnace comprises a carbonization furnace body internally provided with a heater, and a tungsten powder feeding tank and a carbon powder feeding tank which are communicated with the top of the carbonization furnace body; a rotating gear is further fixed to the outer side of the output end of the fixed motor, and the outer side of the rotating gear is connected with the wall cleaning mechanism. The outer side of the rotating gear is meshed with two sets of matching gears, a stirring rod is fixed to the circle center of the bottom of each matching gear, a gas exchange mechanism is arranged in each stirring rod, gas at the top of the inner side of the carbonization furnace body is conveyed to the bottom of the carbonization furnace body through the arrangement of the gas exchange mechanisms, and the phenomenon that materials in the carbonization furnace body are oxidized is avoided. The efficient carbonization furnace for tungsten powder production is provided with the gas exchange mechanism, and gas at the upper end of the inner side of the carbonization furnace body can be conveyed to the bottom of the carbonization furnace body through the arrangement of the gas exchange mechanism, so that gas transfer is formed, effective contact with materials is facilitated, and the oxidation phenomenon is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of tungsten powder processing, in particular to a high-efficiency carbonization furnace for producing tungsten powder. Background Art

[0002] When processing tungsten powder, refined tungsten powder and carbon black are used as raw materials, dry-mixed in a ball mill, fully mixed and pressurized, and then placed in a carbonization furnace for high-temperature carbonization. After carbonization, they are ball-milled and sieved. This technical production process is relatively complicated, time-consuming, and prone to impurities. In addition, uneven tungsten-carbon mixing is prone to occur in the first ball-milling carbonization, resulting in segregation, carbon black impermeability, and low carbon content during the carbonization process. In order to solve the above problems, a carbonization furnace is required for preparation.

[0003] When the existing carbonization furnace is in operation, the materials inside it are easily mixed, which leads to uneven mixing. In order to solve the above-mentioned defects, reference can be made to a carbonization furnace for producing high-efficiency ultra-coarse tungsten carbide powder disclosed in the prior art (application number CN201420751464.1, published on 2015-04-01 Chinese patent). When the carbonization furnace is in use, the powder spraying gun and the circulating fan play the role of air stirring, so that the tungsten-carbon mixture becomes more uniform, and the tungsten powder and carbon powder are evenly coated on the surface of the tungsten carbide powder particles to continue to form tungsten carbide powder, which not only ensures the Fisher particle size of the ultra-coarse tungsten carbide powder, but also solves the problems of segregation, carbon black impermeability and low carbon content; at the same time, reference can also be made to a continuous and high-efficiency tungsten carbide carbonization furnace disclosed in the prior art (application number CN201720331529.0, published on 2017-11-24 Chinese patent), in which the tungsten powder in the carbide furnace is made of The tungsten powder spray gun is sprayed into the carbonization furnace, and the carbon powder is sprayed into the carbonization furnace by the carbon powder nozzle. The carbon powder and the tungsten powder react at the set temperature of the heating plate to obtain tungsten carbide powder. The tungsten carbide powder obtained by the reaction continuously falls and is collected in the collecting hopper and introduced into the furnace tube, and then discharged to the boat outlet by the pneumatic propeller. During this period, the air intake pipe allows external cold air to be introduced into the furnace tube; and a fully automatic vertical ultra-coarse tungsten carbide continuous and efficient carbonization furnace disclosed in the prior art (application number CN201711400852.X, published on 2018-05-18 Chinese patent) is disclosed. The carbonization furnace overcomes the shortcomings of the traditional method for preparing ultra-coarse tungsten carbide powder, such as complicated procedures, low efficiency, and easy removal of tungsten carbide powder. The prepared ultra-coarse tungsten carbide powder cannot meet the increasingly high production requirements. The present invention achieves the effect of making the preparation process of ultra-coarse tungsten carbide powder simpler, more efficient, easy to remove tungsten carbide powder, and better product.

[0004] Although the above-mentioned existing technology can solve some problems in the existing production of tungsten carbide powder, there are still certain shortcomings in its use. When carbonizing the inside of the furnace body, it is necessary to add inert gas to the inside of the furnace body. However, the inert gas is added through one position inside the furnace body. At this time, there may be a large deviation in the gas concentration at the bottom and the top, which may cause local oxidation of the tungsten powder.

[0005] Therefore, we proposed an efficient carbonization furnace for tungsten powder production in order to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide an efficient carbonization furnace for tungsten powder production to solve the problem raised in the background art that during carbonization inside the furnace body on the current market, there is a deviation in gas concentration between the bottom and top, which may lead to oxidation of tungsten powder.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-efficiency carbonization furnace for tungsten powder production, comprising a carbonization furnace body with a heater provided therein, and a tungsten powder feed tank and a carbon powder feed tank connected to the top of the carbonization furnace body, a preheater is installed at the lower side of the tungsten powder feed tank and the carbon powder feed tank, and the discharge positions of the tungsten powder feed tank and the carbon powder feed tank are both provided with valves for metering, a gas conveying member for inputting inert gas is installed at the side wall position of the carbonization furnace body; a fixed motor is installed at the top center position of the carbonization furnace body, and the output end position of the fixed motor extends to the upper and lower ends of the carbonization furnace body. The motor is inserted into the interior of the fixed cylinder, the upper end of the fixed cylinder is fixed to the inner top of the carbonizing furnace body; a rotating gear is also fixed to the outer side of the output end of the fixed motor, and the outer side of the rotating gear is connected to the wall cleaning mechanism. The setting of the wall cleaning mechanism prevents the material from adhering to the inner wall of the carbonizing furnace body; two sets of matching gears are meshed on the outer side of the rotating gear, and a stirring rod is fixed to the bottom center of the matching gear. A ventilation mechanism is provided inside the stirring rod. The setting of the ventilation mechanism realizes the gas transportation from the inner top of the carbonizing furnace body to the bottom position of the carbonizing furnace body, thereby avoiding the oxidation of the material inside the carbonizing furnace body.

[0008] Preferably, the interior of the fixed cylinder includes an outlet opened at the top of the fixed cylinder, an inlet is opened at the bottom of the fixed cylinder, and an auger conveying rod is rotatably arranged inside the fixed cylinder, and the top position of the auger conveying rod is fixed outside the output end of the fixed motor.

[0009] Preferably, the wall cleaning mechanism includes a gear ring meshed with the outer side of the rotating gear, the upper end of the gear ring is rotatably arranged inside the carbonization furnace body, and a scraper is fixed to the bottom of the gear ring, the bottom of the scraper extends into the internal position of the carbonization furnace body, and one side of the bottom of the scraper is attached to the inner wall of the carbonization furnace body.

[0010] Preferably, the scraper is provided with an inner groove near the nozzle of the tungsten powder feed tank and the carbon powder feed tank, which can avoid direct contact between the scraper and the nozzle of the tungsten powder feed tank and the carbon powder feed tank. A circular groove is also provided on the inner side of the upper end of the carbonization furnace body, and the groove near the circular groove below the gear ring is closed by a sealing gasket.

[0011] Preferably, the ventilation mechanism includes a threaded groove opened at the bottom end of the stirring rod, the inner side of the threaded groove is threadedly connected to the outer side of the reciprocating screw, a piston block is fixed at the top position of the reciprocating screw, and the bottom end position of the reciprocating screw is slidably set on the outside of the limit rod; the outer side of the piston block is slidably set in the cavity opened inside the stirring rod, the top of the cavity is communicated with the through hole, a one-way air outlet is opened on the outer side of the upper end of the cavity, and a one-way air inlet is set on the outer side of the upper end of the through hole.

[0012] Preferably, a protrusion is provided on the outer side of the top of the limit rod, and the outer side of the protrusion is slidably set at the bottom end position of the reciprocating screw. The height of the limit rod is greater than the distance the reciprocating screw moves inside the stirring rod. The reciprocating screw and the piston block are integrated, and the outer side of the piston block fits into the inside of the cavity.

[0013] Preferably, the outer side of the one-way air inlet is on the same horizontal line as the inlet, and the through hole is opened inside the stirring rod, and the outermost distance of the stirring rod is between the outer wall of the fixed cylinder and the inner wall of the carbonization furnace body.

[0014] Preferably, the stirring rods are symmetrically arranged in two groups about the center of the carbonizing furnace body, the bottom end of the limiting rod is fixed inside the carbonizing furnace body, and the reciprocating screw drives the piston block and the inner side of the cavity to form a reciprocating sliding structure through the rotation of the thread groove.

[0015] Preferably, a cooling water pipe is wound downwardly inside the carbonization furnace body, the upper end of the cooling water pipe extends from the top of the carbonization furnace body, and the lower end of the cooling water pipe extends from the surface of the carbonization furnace body, and the interior of the cooling water pipe transports coolant.

[0016] Preferably, an eccentric wheel is provided near the upper end of the cooling water pipe, the center of the eccentric wheel is fixed at the center of a set of matching gears, and the upper end of the cooling water pipe forms an extrusion structure with the carbonization furnace body through the eccentric wheel.

[0017] Compared with the prior art, the present invention has the following beneficial effects: the high-efficiency carbonization furnace for tungsten powder production is provided with a ventilation mechanism, which can realize the gas transfer from the upper end of the inner side of the carbonization furnace body to the bottom of the carbonization furnace body, forming a gas transfer, facilitating effective contact with the material and avoiding oxidation. The specific content is shown below;

[0018] 1. A fixed motor is provided. The rotation of the fixed motor enables the material at the bottom of the carbonizing furnace body to enter through the outlet and be discharged through the inlet, thereby preventing the material at the bottom from remaining at the bottom of the carbonizing furnace body. Furthermore, a rotating gear is provided. The rotating gear drives the meshing mating gear to rotate, thereby rotating the stirring rod fixed at the bottom of the mating gear. Through the combination of the two, the material inside the carbonizing furnace body is made to flow, thereby avoiding the phenomenon of insufficient contact.

[0019] 2. A gear ring is provided, and the rotation of the rotating gear can make the matching gear rotate, and the rotation of the matching gear can realize the rotation of the gear ring at the upper position on the inner side of the carbonizing furnace body, so that the scraper provided at the bottom position of the gear ring can clean the inner wall of the carbonizing furnace body, thereby preventing material from remaining on the inner wall of the carbonizing furnace body.

[0020] 3. A stirring rod is provided. The rotation of the stirring rod drives the reciprocating screw and the piston block to slide inside the stirring rod through the limit rod, and the piston block slides on the inner wall of the cavity, so that the piston block can slide back and forth on the cavity. Through the cooperation of the one-way air outlet and the one-way air inlet, the gas at the upper end is transported to the lower end of the carbonization furnace body to achieve the purpose of gas transfer. In addition, the one-way air inlet and the outlet are on the same horizontal line. When the one-way air inlet absorbs the gas, the gas moves relatively and can contact the material discharged from the outlet, which can effectively avoid oxidation.

[0021] 4. A cooling water pipe is provided, which is wound around the inner wall of the carbonizing furnace body. When coolant is transported inside the cooling water pipe, the coolant can cool the inside of the carbonizing furnace body in the later stage. In addition, the rotation of a set of matching gears can cause the eccentric wheel to squeeze the outer side of the upper end of the cooling water pipe, thereby accelerating the circulation of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0023] Figure 2 This is a side structural diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the carbonization furnace body of the present invention;

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of the fixed cylinder of the present invention;

[0026] Figure 5 For the present invention Figure 4 A in the middle is an enlarged structural diagram;

[0027] Figure 6This is a schematic diagram of the main structure of the stirring rod of the present invention;

[0028] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0029] Figure 8 Schematic diagram of the cross-sectional structure of the stirring rod of the present invention;

[0030] Figure 9 This is a schematic diagram of the top view of the eccentric wheel of the present invention;

[0031] Figure 10 This is a schematic diagram of the main structure of the cooling water pipe of the present invention.

[0032] In the figure: 1. Carbonization furnace body; 2. Tungsten powder feed tank; 3. Carbon powder feed tank; 4. Preheater; 5. Gas conveying part; 6. Control box; 7. Fixed motor; 8. Fixed cylinder; 81. Outlet; 82. Inlet; 83. Auger conveying rod; 9. Rotating gear; 10. Matching gear; 11. Gear ring; 12. Scraper; 13. Stirring rod; 14. Thread groove; 15. Reciprocating screw; 16. Piston block; 17. Limit rod; 18. Cavity; 19. One-way air outlet; 20. Through hole; 21. One-way air inlet; 22. Eccentric wheel; 23. Cooling water pipe. DETAILED DESCRIPTION

[0033] See also Figures 1-10 , the present invention provides the following technical solutions:

[0034] Example 1

[0035] In order to solve the problem in the market that when carbonizing the interior of the furnace, there is a deviation in the gas concentration at the bottom and top, which may cause the tungsten powder to be oxidized, please refer to the attached Figure 1 -Attached Figure 3 and attached Figure 6 -Attached Figure 8, including a carbonizing furnace body 1 with a heater inside, and a tungsten powder feed tank 2 and a carbon powder feed tank 3 connected to the top of the carbonizing furnace body 1, a preheater 4 is installed at the lower side of the tungsten powder feed tank 2 and the carbon powder feed tank 3, and the discharge positions of the tungsten powder feed tank 2 and the carbon powder feed tank 3 are both provided with valves for metering, and a gas conveying member 5 for inputting inert gas is installed at the side wall of the carbonizing furnace body 1; a fixed motor 7 is installed at the top center position of the carbonizing furnace body 1, and the output end position of the fixed motor 7 extends into the interior of the fixed cylinder 8, and the upper end of the fixed cylinder 8 is fixed to the carbonizing furnace body 1 The inner top of the rotating gear 9 is meshed with two sets of matching gears 10, and a stirring rod 13 is fixed to the bottom center of the matching gear 10. A ventilation mechanism is provided inside the stirring rod 13. The ventilation mechanism is provided to realize the gas at the top of the inner side of the carbonizing furnace body 1 to be transported to the bottom position of the carbonizing furnace body 1, thereby avoiding the oxidation of the material inside the carbonizing furnace body 1; the ventilation mechanism includes a threaded groove 14 provided at the bottom end of the stirring rod 13, and the inner side of the threaded groove 14 is threadedly connected to the outer side of the reciprocating screw rod 15. A piston block 16 is fixed to the top position of the reciprocating screw rod 15, and the reciprocating screw rod 1 5 is slidably arranged on the outside of the limit rod 17; the outside of the piston block 16 is slidably arranged in the cavity 18 opened inside the stirring rod 13, the top of the cavity 18 is communicated with the through hole 20, a one-way air outlet 19 is opened on the outside of the upper end of the cavity 18, and a one-way air inlet 21 is provided on the outside of the upper end of the through hole 20; a convex block is provided on the outside of the top of the limit rod 17, and the outer side of the convex block is slidably arranged on the bottom end position of the reciprocating screw 15, the height of the limit rod 17 is greater than the distance the reciprocating screw 15 moves inside the stirring rod 13, the reciprocating screw 15 and the piston block 16 are It is an integrated arrangement, and the outer side of the piston block 16 fits into the interior of the cavity 18; the outer side of the one-way air inlet 21 is on the same horizontal line as the inlet 82, and the through hole 20 is opened in the internal position of the stirring rod 13, and the outermost distance of the stirring rod 13 is between the outer wall of the fixed cylinder 8 and the inner wall of the carbonizing furnace body 1; the stirring rod 13 is symmetrically arranged in two groups about the center position of the carbonizing furnace body 1, and the bottom end of the limit rod 17 is fixed to the interior of the carbonizing furnace body 1, and the reciprocating screw 15 drives the piston block 16 and the inner side of the cavity 18 to form a reciprocating sliding structure through the rotation of the thread groove 14.

[0036] First, the control box 6 is used to control the preheater 4 to work, so that the preheater 4 can drive the materials inside the tungsten powder feed tank 2 and the carbon powder feed tank 3 to be preheated, and the materials are circulated to the inside of the carbonization furnace body 1 through the valve setting. Then, the heater inside the carbonization furnace body 1 is controlled to work, so that the materials inside the carbonization furnace body 1 can be reacted, and before work, inert gas is transported to the inside of the carbonization furnace body 1 through the gas conveying part 5 to discharge the oxygen inside the carbonization furnace body 1. When the reaction is carried out, a certain amount of inert gas is also transported to the inside of the carbonization furnace body 1. At this time, the fixed motor 7 is started, and the output end of the fixed motor 7 drives the rotating gear 9 to rotate when rotating, so that the rotating gear 9 can drive the matching gear 10 to rotate, and then the matching gear 10 can rotate inside the carbonization furnace body 1. Since a thread groove 14 is provided at the bottom position of the matching gear 10, and the thread groove 14 is threadedly connected to the reciprocating screw 15, the reciprocating screw 15 can drive the piston block 16 to pass through the limiting rod 17 on the stirring rod. The piston 13 slides inside the cavity 18, so that the outer side of the piston block 16 slides inside the cavity 18. When the piston block 16 descends in the cavity 18, the piston block 16 absorbs the gas inside the carbonization furnace body 1 through the one-way air inlet 21. When the piston block 16 rises inside the cavity 18, the piston block 16 pushes the gas inside the cavity 18, so that the gas is discharged through the one-way air outlet 19, and the material at the bottom end of the carbonization furnace body 1 contacts the inert gas. In addition, through the stirring rod 13 The rotation operation can make the tungsten powder above fully contact with the inert gas, reduce the concentration difference of the inert gas at the upper and lower ends of the carbonization furnace body 1, and avoid oxidation during the high-temperature process. The one-way air inlet 21 and the outlet 81 are at the same horizontal position. When the one-way air inlet 21 absorbs the gas, the gas circulates, and the outlet 81 discharges the material, so that the flowing gas can contact the material discharged from the outlet 81, which can further prevent the oxidation of the material. Through the above settings, the carbonization work can be carried out more efficiently.

[0037] Example 2

[0038] In order to ensure sufficient contact between carbon powder and tungsten powder, please refer to the attached Figure 1 -Attached Figure 6; A rotating gear 9 is also fixed to the outside of the output end of the fixed motor 7, and the outside of the rotating gear 9 is connected to the wall cleaning mechanism. The setting of the wall cleaning mechanism prevents the material from adhering to the inner wall of the carbonizing furnace body 1; the interior of the fixed cylinder 8 includes an outlet 81 opened at the top of the fixed cylinder 8, an inlet 82 is opened at the bottom position of the fixed cylinder 8, and an auger conveying rod 83 is provided inside the fixed cylinder 8, and the top position of the auger conveying rod 83 is fixed to the outside of the output end of the fixed motor 7; the wall cleaning mechanism includes a gear ring 11 meshed with the outside of the rotating gear 9, and the gear ring 11 is connected to the outside of the fixed cylinder 8. The upper end is rotatably arranged inside the carbonizing furnace body 1, and a scraper 12 is fixed to the bottom of the gear ring 11. The bottom of the scraper 12 extends into the internal position of the carbonizing furnace body 1, and one side of the bottom of the scraper 12 is attached to the inner wall of the carbonizing furnace body 1; the scraper 12 is arranged in an inner groove near the nozzle position of the tungsten powder feed tank 2 and the carbon powder feed tank 3, which can avoid direct contact between the scraper 12 and the nozzle position of the tungsten powder feed tank 2 and the carbon powder feed tank 3. A circular groove is also provided on the inner side of the upper end of the carbonizing furnace body 1, and the groove near the circular setting below the gear ring 11 is closed by a sealing gasket.

[0039] By starting the fixed motor 7, when the fixed motor 7 rotates, it can not only drive the matching gear 10 and the stirring rod 13 to rotate by the rotating gear 9, and the stirring rod 13 stirs the material inside the carbonizing furnace body 1, so that the material inside the carbonizing furnace body 1 is mixed, but also drive the auger conveying rod 83 to rotate inside the fixed cylinder 8 through the output end of the fixed motor 7, so that the material can be loaded onto the material at the bottom end of the carbonizing furnace body 1, and the inlet 82 set at the top of the fixed cylinder 8 can unload the material inside the fixed cylinder 8, so that the material inside the carbonizing furnace body 1 can be fully reacted and contacted. In addition, when the rotating gear 9 rotates, the rotating gear 9 will also drive the gear ring 11 to rotate inside the carbonizing furnace body 1, so that the gear ring 11 drives the scraper 12 to scrape the material adhered to the inner wall of the carbonizing furnace body 1. Through the above settings, sufficient contact between carbon powder and tungsten powder can be achieved.

[0040] Example 3

[0041] In order to cool the material inside the carbonization furnace body 1 after the end, please refer to the attached Figure 1 , Attachment Figure 9 and attached Figure 10 A cooling water pipe 23 is wound downwardly inside the carbonizing furnace body 1, and the upper end of the cooling water pipe 23 extends from the top of the carbonizing furnace body 1, and the lower end of the cooling water pipe 23 extends from the surface of the carbonizing furnace body 1. Cooling liquid is transported inside the cooling water pipe 23; an eccentric wheel 22 is provided near one side of the upper end of the cooling water pipe 23, and the center position of the eccentric wheel 22 is fixed at the center position of a set of mating gears 10. The upper end of the cooling water pipe 23 forms an extrusion structure with the carbonizing furnace body 1 through the eccentric wheel 22.

[0042] After the carbonization reaction is completed, it is still necessary to maintain the introduction of inert gas during the cooling process. Continuous introduction of inert gas can form a protective gas film on the surface of the product to prevent it from being oxidized during the cooling process, ensuring that the final tungsten carbide product has good performance and purity. Coolant is transported to the inside of the cooling water pipe 23, so that the coolant can cool the inside of the carbonization furnace body 1. In addition, through the rotation of a group of mating gears 10, the outer side of the mating gear 10 drives the eccentric wheel 22 to rotate, so that the cooling water pipe 23 squeezes one side of the eccentric wheel 22, so that the coolant inside the cooling water pipe 23 can be cooled more quickly.

Claims

1. A high-efficiency carbonization furnace for producing tungsten powder, comprising a carbonization furnace body (1) with a heater provided therein, and a tungsten powder feed tank (2) and a carbon powder feed tank (3) connected to the top of the carbonization furnace body (1), a preheater (4) being installed at the lower side of the tungsten powder feed tank (2) and the carbon powder feed tank (3), valves for metering being provided at the discharge positions of the tungsten powder feed tank (2) and the carbon powder feed tank (3), and a gas conveying member (5) for inputting an inert gas being installed at the side wall of the carbonization furnace body (1); Its characteristics are: A fixed motor (7) is installed at the center of the top of the carbonization furnace body (1), and the output end of the fixed motor (7) extends into the interior of the fixed cylinder (8), and the upper end of the fixed cylinder (8) is fixed to the inner top of the carbonization furnace body (1); A rotating gear (9) is also fixed to the outside of the output end of the fixed motor (7), and the outside of the rotating gear (9) is connected to a wall cleaning mechanism. The wall cleaning mechanism is provided to prevent materials from adhering to the inner wall of the carbonization furnace body (1); Two sets of matching gears (10) are meshed on the outer side of the rotating gear (9), a stirring rod (13) is fixed at the bottom center of the matching gear (10), and a ventilation mechanism is provided inside the stirring rod (13). The ventilation mechanism is provided to realize the gas at the top of the inner side of the carbonization furnace body (1) to be transported to the bottom position of the carbonization furnace body (1), thereby avoiding the oxidation of the material inside the carbonization furnace body (1).

2. The high-efficiency carbonization furnace for tungsten powder production according to claim 1, characterized in that: An outlet (81) is provided at the top of the interior of the fixed cylinder (8), an inlet (82) is provided at the bottom of the fixed cylinder (8), and an auger conveying rod (83) is rotatably provided inside the fixed cylinder (8), and the top of the auger conveying rod (83) is fixed outside the output end of the fixed motor (7).

3. The high-efficiency carbonization furnace for tungsten powder production according to claim 1, characterized in that: The wall cleaning mechanism includes a toothed ring (11) meshed with the outer side of a rotating gear (9), the upper end of the toothed ring (11) is rotatably arranged inside the carbonization furnace body (1), and a scraper (12) is fixed to the bottom of the toothed ring (11), the bottom of the scraper (12) extends into the interior of the carbonization furnace body (1), and one side of the bottom of the scraper (12) is in contact with the inner wall of the carbonization furnace body (1).

4. The high-efficiency carbonization furnace for tungsten powder production according to claim 2, characterized in that: The scraper (12) is provided with an inner groove near the nozzles of the tungsten powder feed tank (2) and the carbon powder feed tank (3), so as to avoid direct contact between the scraper (12) and the nozzles of the tungsten powder feed tank (2) and the carbon powder feed tank (3). A circular groove is also provided on the inner side of the upper end of the carbonization furnace body (1), and the groove near the circular groove below the gear ring (11) is closed by a sealing gasket.

5. The high-efficiency carbonization furnace for tungsten powder production according to claim 1, characterized in that: The ventilation mechanism includes a thread groove (14) formed at the bottom end of the stirring rod (13), the inner side of the thread groove (14) is threadedly connected to the outer side of the reciprocating screw rod (15), a piston block (16) is fixed at the top position of the reciprocating screw rod (15), and the bottom end position of the reciprocating screw rod (15) is slidably arranged on the outer side of the limit rod (17); The outer side of the piston block (16) is slidably arranged in a cavity (18) opened inside the stirring rod (13); the top of the cavity (18) is communicated with the through hole (20); a one-way air outlet (19) is opened on the outer side of the upper end of the cavity (18); and a one-way air inlet (21) is arranged on the outer side of the upper end of the through hole (20).

6. The high-efficiency carbonization furnace for tungsten powder production according to claim 5, characterized in that: A protrusion is provided on the outer side of the top of the limiting rod (17), and the outer side of the protrusion is slidably provided at the bottom end position of the reciprocating screw (15). The height of the limiting rod (17) is greater than the distance that the reciprocating screw (15) moves inside the stirring rod (13). The reciprocating screw (15) and the piston block (16) are integrated, and the outer side of the piston block (16) is fitted into the interior of the cavity (18).

7. The high-efficiency carbonization furnace for tungsten powder production according to claim 5, characterized in that: The outer side of the one-way air inlet (21) is on the same horizontal line as the inlet (82), and the through hole (20) is opened at an inner position of the stirring rod (13), and the outermost distance of the stirring rod (13) is between the outer wall of the fixed cylinder (8) and the inner wall of the carbonization furnace body (1).

8. The high-efficiency carbonization furnace for tungsten powder production according to claim 5, characterized in that: The stirring rods (13) are symmetrically arranged in two groups about the center position of the carbonizing furnace body (1); the bottom end of the limiting rod (17) is fixed inside the carbonizing furnace body (1); and the reciprocating screw (15) drives the piston block (16) and the inner side of the cavity (18) to form a reciprocating sliding structure through the rotation of the thread groove (14).

9. The high-efficiency carbonization furnace for tungsten powder production according to claim 1, characterized in that: A cooling water pipe (23) is wound downwardly at an internal position of the carbonization furnace body (1), the upper end of the cooling water pipe (23) extends from the top position of the carbonization furnace body (1), and the lower end of the cooling water pipe (23) extends from the surface of the carbonization furnace body (1), and the interior of the cooling water pipe (23) transports cooling liquid.

10. The high-efficiency carbonization furnace for tungsten powder production according to claim 9, characterized in that: An eccentric wheel (22) is provided near one side of the upper end of the cooling water pipe (23), the center position of the eccentric wheel (22) is fixed to the center position of a group of matching gears (10), and the matching gears (10) are rotatably provided inside the carbonization furnace body (1). The upper end of the cooling water pipe (23) forms an extrusion structure with the carbonization furnace body (1) through the eccentric wheel (22).

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