Hydrogen molybdenum wire furnace for improving tungsten processing quality

Abstract

The utility model relates to a hydrogen molybdenum wire furnace capable of improving tungsten processing quality in the technical field of tungsten carbide powder production equipment, which comprises a furnace body, a smoke exhaust pipe is arranged at one end of the furnace body, an ignition needle is arranged at a smoke outlet of the smoke exhaust pipe and is matched with an igniter, a smoke collecting hood is arranged at the top of the smoke exhaust pipe, and the smoke collecting hood is matched with the igniter. The smoke collecting hood is connected with a smoke guide pipe, the smoke exhaust pipe is further matched with a hydrogen detector, the hydrogen detector is fixed to one side of the smoke exhaust pipe through a support, and the height of the hydrogen detector is larger than that of the smoke outlet. The feeding end can be efficiently and stably opened and closed through the furnace door, automatic ignition operation can be achieved through cooperation of the ignition needle and the igniter, the workload is reduced, emission of flue gas such as carbon monoxide after combustion is avoided, pollution is reduced, and production is facilitated.

Description

Technical Field

[0001] This utility model belongs to the technical field of tungsten carbide powder production equipment, specifically relating to a hydrogen molybdenum wire furnace for improving tungsten processing quality. Background Technology

[0002] The production principle of tungsten carbide powder involves a high-temperature chemical reaction between tungsten and carbon in a hydrogen atmosphere. Hydrogen acts primarily as a medium, first reacting with carbon to form hydrocarbons, which then infuse the carbon into the tungsten powder to produce tungsten carbide. Since hydrogen does not participate in the reaction, it is discharged from the molybdenum wire furnace as hydrocarbon fumes. Because the discharged gas also contains some carbon monoxide (generated from the reaction of oxygen in tungsten, carbon, and a small amount of moisture with carbon black), untreated hydrogen will cause environmental pollution and hinder production. Therefore, a hydrogen-powered molybdenum wire furnace is needed to improve the quality of tungsten processing and address these technical problems. Utility Model Content

[0003] To address the aforementioned deficiencies in existing technologies, this utility model provides a hydrogen-molybdenum wire furnace for improving tungsten processing quality. The furnace includes a furnace body, with an exhaust pipe at one end. An ignition needle is located at the exhaust pipe's outlet, and the ignition needle is used in conjunction with an igniter. A smoke collection hood is located at the top of the exhaust pipe, and the smoke collection hood is connected to a smoke guide pipe. The exhaust pipe is also equipped with a hydrogen detector, which is fixed to one side of the exhaust pipe by a bracket. The height of the hydrogen detector is higher than the height of the exhaust outlet.

[0004] It should be noted that the flue gas inside the furnace is discharged from the exhaust pipe. The ignition needle and igniter work together to ignite the flue gas, which is then collected by the fume hood and discharged, reducing environmental pollution. The igniter uses the TM681-D igniter, which can operate with a single electrode for both ignition and detection. An alarm will be triggered when no flame is detected, and the alarm function will drive a relay to ignite the gas again, thus achieving automatic ignition. A hydrogen detector can be used to detect any gas leaks.

[0005] Preferably, the exhaust pipe is located at the feed end of the furnace body, the feed end is provided with an openable furnace door, the feed end is provided with a protective box matching the furnace door, the feed end passes through the protective box, the height of the protective box is not less than twice the height of the furnace door, a cylinder is fixed on the top of the protective box, and the telescopic end of the cylinder extends vertically downward into the protective box and connects to the top of the furnace door.

[0006] It should be noted that the cylinder can drive the furnace door to move up and down inside the protective box. When the cylinder extends, the furnace door moves down to block the feed end. When the cylinder retracts, the furnace door moves up to open the feed end. The up and down movement of the furnace door inside the protective box further improves safety and also enhances the stability of the furnace door movement.

[0007] Preferably, the ignition needle is fixedly connected to the fixed end of the cylinder via a connector, which simplifies the structure.

[0008] Preferably, the furnace door is provided with a sealing ring, which is a wear-resistant silicone or wear-resistant rubber ring.

[0009] It should be noted that the sealing ring can improve the sealing between the furnace door and the discharge end, reducing air leakage.

[0010] Preferably, the smoke hood is a conical hood that is wider at the bottom and narrower at the top, and the conical hood is connected to a support rod. To improve the stability of the smoke hood, an exhaust fan is installed on the smoke guide pipe, which allows the flue gas after combustion to fully enter the smoke hood and be discharged through the smoke guide pipe.

[0011] Preferably, the support rod is a vertical telescopic rod, and the smoke hood and the smoke guide pipe are connected by a telescopic spring tube. The vertical telescopic rod is a cylinder, an electric push rod, or a hydraulic cylinder.

[0012] By the extension and retraction of the support rod

[0013] It should be noted that the height of the smoke hood can be adjusted reasonably by extending and retracting the support rod, thereby improving the smoke collection effect.

[0014] Working principle: The flue gas inside the furnace is discharged from the exhaust pipe. The ignition needle and igniter work together to ignite the flue gas, which is then collected by the fume hood and discharged, reducing environmental pollution. An igniter (electrode discharge ignition) is installed at the exhaust pipe outlet to achieve automatic ignition when the flame goes out. A hydrogen detector can detect whether there is a gas leak. This avoids the situation where the flame at the exhaust pipe goes out due to the need for continuous feeding during production, requiring constant manual re-ignition and increasing the workload.

[0015] This invention also includes other components that enable the normal operation of a hydrogen-molybdenum wire furnace for improving tungsten processing quality, such as control components for the exhaust fan, hydrogen detector, igniter, cylinder, electric actuator, and hydraulic cylinder, all of which are conventional technologies in the field. Furthermore, devices or components not specified in this invention, such as hydraulic cylinders, electric actuators, cylinders, hydrogen detectors, igniters, ignition needles, exhaust fans, and Bourdon tubes, all employ conventional technologies and equipment in the field.

[0016] The beneficial effects of this utility model are: the furnace door allows for efficient and stable opening and closing of the feed end; the ignition needle and igniter work together to achieve automatic ignition, reducing workload, preventing the emission of unburned flue gas such as carbon monoxide, reducing pollution, and benefiting production. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of a hydrogen-molybdenum wire furnace for improving tungsten processing quality according to an embodiment of this utility model;

[0019] Figure 2 for Figure 1 View from point AA;

[0020] Figure 3 for Figure 2 Diagram showing the state of the furnace when the feed end door is closed;

[0021] Figure 4 for Figure 3 Rear view of the furnace door.

[0022] In the diagram: 1. Furnace body; 2. Exhaust pipe; 3. Support rod; 4. Spring tube; 5. Smoke hood; 6. Ignition needle; 7. Ignition device; 8. Flame; 9. Protective box; 10. Cylinder; 11. Hydrogen detector; 12. Furnace door; 13. Guide groove; 14. Sealing ring. Detailed Implementation

[0023] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0024] Example

[0025] like Figure 1-4As shown, this utility model provides a hydrogen-molybdenum wire furnace for improving the quality of tungsten processing, including a furnace body 1. One end of the furnace body 1 is provided with a flue pipe 2. An ignition needle 6 is provided at the flue outlet of the flue pipe 2. The ignition needle 6 is used in conjunction with an igniter 7. A smoke collection hood 5 is provided at the top of the flue pipe 2. The smoke collection hood 5 is connected to a smoke guide pipe. The flue pipe 2 is also equipped with a hydrogen detector 11 (model: Shandong Yaoan GT-YA-D300F-L). The hydrogen detector 11 is fixed to one side of the flue pipe 2 by a bracket. The height of the hydrogen detector 11 is higher than the height of the flue outlet. The flue gas inside the furnace body 1 is discharged from the exhaust pipe 2. The ignition needle 6 works with the igniter 7 to ignite the flue gas. After ignition, the flue gas is collected by the smoke collection hood 5 and discharged, reducing environmental pollution. The igniter 7 is a TM681-D igniter 7, which can operate in a mode where ignition and detection are performed using a single electrode. When no flame is detected 8, an alarm will be triggered, and the alarm function will drive the relay to ignite again, thereby achieving the function of automatic ignition (that is, it mainly relies on the electrode to continuously ignite, and can be automatically ignited when the flue gas is discharged after the furnace door is closed). The presence of gas leakage can be detected by the hydrogen detector 11.

[0026] The exhaust pipe 2 is located at the feed end of the furnace body 1. The feed end is equipped with an openable furnace door 12 and a protective box 9 that matches the furnace door 12. The side wall of the protective box 9 is provided with a guide groove 13. The two vertical sides of the furnace door 12 are slidably disposed in the corresponding guide grooves 13. The feed end passes through the protective box 9. The height of the protective box 9 is not less than twice the height of the furnace door 12. A cylinder 10 is fixed to the top of the protective box 9. The telescopic end of the cylinder 10 extends vertically downward into the protective box 9 and connects to the top of the furnace door 12. The cylinder 10 can drive the furnace door 12 to move up and down within the protective box 9. When the cylinder 10 extends, the furnace door 12 moves down, blocking the feed end. When the cylinder 10 retracts, the furnace door 12 moves up, opening the feed end. The up-and-down movement of the furnace door 12 within the protective box 9 further improves safety and stability.

[0027] The ignition needle 6 is fixedly connected to the fixed end of the cylinder 10 via a connector, which simplifies the structure.

[0028] A sealing ring 14 is provided on the furnace door 12. The sealing ring 14 is made of wear-resistant silicone or wear-resistant rubber. The sealing ring 14 can improve the sealing performance between the furnace door 12 and the discharge end, reducing air leakage.

[0029] The smoke collection hood 5 is a conical hood that is wider at the bottom and narrower at the top, and the conical hood is connected to a support rod 3. To improve the stability of the smoke collection hood 5, an exhaust fan is installed on the smoke guide pipe, which allows the flue gas after combustion to fully enter the smoke collection hood 5 and be discharged by the smoke guide pipe.

[0030] The support rod 3 is a vertical telescopic rod, and the smoke collection hood 5 is connected to the smoke guide pipe via a telescopic spring tube 4. The vertical telescopic rod is a cylinder 10, an electric push rod, or a hydraulic cylinder. The height of the smoke collection hood 5 can be adjusted reasonably by extending and retracting the support rod 3, thereby improving the smoke collection effect.

[0031] The hydraulic cylinder, electric push rod, air cylinder, hydrogen detector, igniter, ignition needle, exhaust fan, and spring tube mentioned in the above embodiments are all existing technologies. This application does not make any improvements to them, but only utilizes their existing functions. For their specific structure and principle, please refer to the product manual or existing technical data, which are all existing technologies.

[0032] The embodiments of this utility model have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydrogen molybdenum wire furnace for improving the processing quality of tungsten, comprising a furnace body, one end of the furnace body is provided with a smoke exhaust pipe, characterized in that: The smoke outlet of the smoke exhaust pipe is provided with an ignition needle matched with an igniter, the top of the smoke exhaust pipe is provided with a smoke collecting hood, the smoke collecting hood is connected with a smoke guide pipe, the smoke exhaust pipe is further matched with a hydrogen gas detector, the hydrogen gas detector is fixed on one side of the smoke exhaust pipe through a support, and the height of the hydrogen gas detector is higher than the height of the smoke outlet. ​ 2. The hydrogen molybdenum wire furnace for improving tungsten processing quality according to claim 1, characterized in that: The smoke exhaust pipe is arranged at the feeding end of the furnace body, the feeding end is provided with an openable and closable furnace door, the feeding end is provided with a protection box matched with the furnace door, the feeding end passes through the protection box, the height of the protection box is not less than twice the height of the furnace door, the top of the protection box is fixed with a gas cylinder, and the telescopic end of the gas cylinder vertically extends into the protection box and is connected with the top of the furnace door.

3. The hydrogen molybdenum wire furnace for improving tungsten processing quality according to claim 2, characterized in that: The ignition needle is fixedly connected with the fixed end of the gas cylinder through a connecting piece.

4. The hydrogen molybdenum wire furnace for improving tungsten processing quality according to claim 2, characterized in that: A sealing ring is arranged on the furnace door, and the sealing ring is a wear-resistant silica gel ring or a wear-resistant rubber ring.

5. The hydrogen molybdenum wire furnace for improving tungsten processing quality according to claim 1, characterized in that: The smoke collecting hood is a conical hood with a wide lower part and a narrow upper part, and the conical hood is connected with a support rod.

6. The hydrogen molybdenum wire furnace for improving tungsten processing quality according to claim 5, characterized in that: The support rod is a vertical telescopic rod, and the vertical telescopic rod is a gas cylinder, an electric push rod or a hydraulic cylinder.

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