A molybdenum strip processing reduction device

Abstract

The utility model belongs to metal processing technical field, concretely relates to a kind of molybdenum strip processing reduction device, including the furnace door of rotation assembly in the one side of reduction furnace, the internal flow guide copper pipe of furnace door is equipped with, the flow guide copper pipe is arranged in a roundabout way in the shape of "Wang", and its both ends are extended to furnace door top outside, the side wall of reduction furnace and located above the adjustable sliding of furnace door is equipped with double pipe joint mechanism, the double pipe joint mechanism includes: the guide rail of being fixed in the side wall of reduction furnace, fixed hole is set up in guide rail both ends;The utility model controls the flow pipe and flow guide copper pipe to be connected through double pipe joint mechanism and through flow, makes flow guide copper pipe form circulating waterway in furnace door, and heat is quickly guided and drained, or controls the separation of both and cut-off, to cooperate with the opening and closing of furnace door, so that the surface temperature of furnace door can be reduced, prevent operator from being scalded by mistake, reduce security risk.

Description

Technical Field

[0001] The utility model belongs to the field of metal processing, and specifically relates to a molybdenum bar processing and reduction device. Background Art

[0002] A molybdenum bar processing and reduction device is key equipment in molybdenum metal production, and is a special device mainly used for converting molybdenum oxides (such as molybdenum trioxide) into metal molybdenum powder or molybdenum bar blanks through high-temperature hydrogen reduction process. Generally, hydrogen is injected into a reduction furnace to generate a hydrogen reduction reaction (MoO3+3H2→Mo+3H2O), which converts molybdenum oxides into metal molybdenum powder or primary molybdenum bar blanks, achieving high purity (≥99.95%) of molybdenum and particle size control.

[0003] In the prior art processing of molybdenum bars, molybdenum powder is placed into a reduction furnace through a boat plate. The furnace door of the reduction furnace is affected by the high temperature inside the furnace chamber (up to 1700°C). Although structures such as heat insulation cotton are provided to block heat, heat is still conducted through the sealing structure of the furnace door and the metal shell, which will raise the surface temperature of the furnace door to 60–100°C. When operators open and close the furnace door, they are prone to scalding due to contact, which poses a potential safety hazard. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a molybdenum bar processing and reduction device, which controls the connection and through-flow between the flow-receiving pipe and the flow guide copper pipe through a double-pipe embedding mechanism, so that the flow guide copper pipe forms a circulating water path inside the furnace door to quickly conduct and discharge heat, or controls the separation and cut-off of the two to cooperate with the opening and closing of the furnace door, thereby reducing the surface temperature of the furnace door, preventing accidental contact scalding of operators, and reducing potential safety hazards.

[0005] The technical solution adopted by the utility model is specifically as follows: A molybdenum bar processing and reduction device comprises a furnace door rotatably assembled on one side of a reduction furnace, wherein a flow guide copper pipe is arranged inside the furnace door, the flow guide copper pipe is arranged in a "king"-shaped迂回 arrangement, both ends of the flow guide copper pipe extend to the outside of the top of the furnace door, and a double-pipe embedding mechanism is adjustably slidably arranged on the side wall of the reduction furnace and above the furnace door.

[0006] The double-pipe embedding mechanism comprises: a guide rail fixed on the side wall of the reduction furnace, and fixing holes are provided at both ends of the guide rail.

[0007] a sliding plate, wherein the sliding plate is in sliding fit with the guide rail, and limiting plates are arranged at both ends of the guide rail to limit the sliding stroke of the sliding plate.

[0008] a fastening rotating handle, wherein the fastening rotating handle penetrates the middle part of the sliding plate and is in threaded connection with any one of the fixing holes, and L-shaped flow-receiving pipes are fixed at both ends of the sliding plate.

[0009] The two connectors are fixed to both ends of the guide copper pipe, forming an inlet and an outlet to create a circulating water path.

[0010] A shut-off valve is provided at the end of the inlet pipe, and a limit ring and a sealing ring are sequentially fixed to the outer wall of the shut-off valve.

[0011] The flow inlet head is fixedly connected to a top rod, which is used to drive the valve core of the shut-off valve to move.

[0012] A sealing groove is formed on the top of the receiving head, and the sealing groove is interference-fitted with the sealing ring.

[0013] The end of the shut-off valve facing the reduction furnace is connected to a heat-resistant hose. A drain pipe is fixedly connected to the top of the reduction furnace extending towards the limiting plate, and the drain pipe is fixedly connected to the heat-resistant hose.

[0014] One end of the receiving pipe is sealed and inserted into the receiving head, with their axes coinciding to form a fluid conduction channel.

[0015] The technical effect achieved by this utility model is as follows: by controlling the connection between the inlet pipe and the guide copper pipe through the double pipe splicing mechanism, the guide copper pipe forms a circulating water path in the furnace door, which quickly conducts and discharges heat, or controls the two to separate and cut off the flow, so as to cooperate with the opening and closing of the furnace door, thereby reducing the surface temperature of the furnace door, preventing operators from accidentally touching and burning themselves, and reducing safety hazards. Attached Figure Description

[0016] Figure 1 This is an overall view of the reduction furnace provided in an embodiment of this utility model; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a structural illustration of the removal of the reduction furnace and furnace door obstruction provided in an embodiment of this utility model; Figure 4 yes Figure 3 A magnified view of a section at point B in the middle; Figure 5 yes Figure 4 A magnified view of a section at point C.

[0017] The attached diagram lists the components represented by each number as follows: 1. Reduction furnace; 101. Furnace door; 102. Guide copper pipe; 103. Flow inlet head; 104. Top rod; 105. Sealing groove; 2. Guide rail; 201. Limiting plate; 202. Fixing hole; 203. Sliding plate; 204. Heat-resistant flexible hose; 205. Flow inlet pipe; 206. Shut-off valve; 207. Limiting ring; 208. Sealing ring; 209. Fastening handle; 210. Drain pipe. Detailed Description of Embodiments

[0018] To clarify the objectives and advantages of the present utility model more clearly, the present utility model is specifically described below with reference to embodiments. It should be understood that the following text only describes one or several specific embodiments of the present utility model, and does not strictly limit the scope of protection specifically claimed by the present utility model.

[0019] As shown in Figures 1-5 , a molybdenum bar processing and reducing device comprises a furnace door rotatably assembled on one side of a reduction furnace, a flow guide copper tube is arranged inside the furnace door, the flow guide copper tube is arranged in a king-shaped winding layout, both ends of the flow guide copper tube extend to the outer side of the top of the furnace door, and a double-tube embedding mechanism is adjustably slidably arranged on the side wall of the reduction furnace and above the furnace door; The double-tube embedding mechanism comprises: a guide rail fixed on the side wall of the reduction furnace, fixing holes are formed at both ends of the guide rail; a sliding plate in sliding fit with the guide rail, limiting plates are arranged at both ends of the guide rail to limit the sliding stroke of the sliding plate; a tightening rotary handle penetrating through the middle part of the sliding plate and in threaded connection with any one of the fixing holes; L-shaped flow receiving tubes fixed at both ends of the sliding plate, and flow receiving heads fixedly connected to both ends of the flow guide copper tube.

[0020] According to the above structure, in this embodiment, the double-tube embedding mechanism controls the embedding or separation of the flow receiving tubes and the flow guide copper tube to cooperate with the opening and closing of the furnace door. Specifically: in the initial state, the sliding plate is attached to the limiting plate at the top of the guide rail, the tightening rotary handle is screwed with the fixing hole at the top end of the guide rail. After the furnace door is closed, the tightening rotary handle is rotated to separate it from the corresponding fixing hole, the sliding plate is slid downward until it is attached to the limiting plate at the bottom of the guide rail. At this time, the flow receiving tubes descend together with the sliding plate and are inserted into the corresponding flow receiving heads, the tightening rotary handle is rotated again to screw it with the fixing hole at the bottom end of the guide rail for fixation, so as to fix the positions of the sliding plate and the flow receiving tubes. Similarly, when the furnace door is about to be opened, the tightening rotary handle is rotated to separate it from the fixing hole at the bottom end of the guide rail, the sliding plate is slid upward to separate the flow receiving tubes from the flow receiving heads, and the tightening rotary handle is screwed into the corresponding fixing hole again to fix the position of the sliding plate.

[0021] Referring to the drawing Figures 3-5 , the double-tube embedding mechanism further comprises: the two flow receiving heads respectively form a water inlet and a water outlet to form a circulating water path; a stop valve is arranged at the end of the flow receiving tube, and a limiting ring and a sealing ring are sequentially and fixedly connected to the outer wall of the stop valve; An ejector rod 104 is fixedly connected in the flow receiving head 103, and is configured to drive the valve core of the stop valve 206 to move; a sealing groove 105 is formed on the top of the flow receiving head 103, and the sealing groove 105 is in interference fit with a sealing ring 208; an end of the stop valve 206 facing the reduction furnace 1 is connected with a heat-resistant hose 204; a drainage tube 210 is fixedly connected to the top of the reduction furnace 1 extending toward the position limiting plate 201, and the drainage tube 210 is in fixed communication with the heat-resistant hose 204. One end of a flow receiving tube 205 is in sealed inserting connection with the flow receiving head 103, the axes of the two are coincident, and a fluid conduction channel is formed thereby.

[0022] According to the above structure, there are two drainage tubes 210, one is used for externally connecting a water source or cooling liquid and a water pump to supply water or liquid to one of the heat-resistant hoses 204 and the flow receiving tube 205, and the other is used for draining water and liquid. When the flow receiving tube 205 is embedded with the flow receiving head 103, the sealing ring 208 is embedded into the corresponding sealing groove 105 to form interference fit, a position limiting ring 207 limits the position of the sealing ring 208, so as to prevent the sealing ring 208 from being pushed upward and disengaged by the sealing groove 105 when the stop valve 206 descends, so that the fit between the sealing ring 208 and the sealing groove 105 is tighter. Meanwhile, when the stop valve 206 descends, the ejector rod 104 is inserted into the stop valve 206 and pushes up the valve clack inside the stop valve, and the spring outside the valve is compressed and contracted. At this time, the flow receiving head 103, the stop valve 206, the flow receiving tube 205, the heat-resistant hose 204 and the drainage tube 210 jointly form a through water channel, water flow in the stop valve 206 will flow into the flow receiving head 103 and flow inside the furnace door 101 along the "king"-shaped pipeline of the flow receiving head 103, which can expand the cooling area, absorb and take away the heat of the furnace door 101, then flow into the corresponding position limiting ring 207 and the heat-resistant hose 204 through another flow receiving head 103, and finally flow out through the drainage tube 210 responsible for draining water and liquid. When the flow receiving tube 205 moves upward along with the sliding plate 203, the stop valve 206 is disengaged from the flow receiving head 103, the ejector rod 104 no longer pushes and squeezes the valve clack of the stop valve 206, the valve clack descends and resets under the condition of spring reset to block water flow. The heat-resistant hose 204 is a flexible hose, although it is located relatively above the furnace position, it may still be affected by residual temperature, therefore, materials including but not limited to cross-linked polyethylene, heat-resistant polyethylene, silicon, rubber, EPDM rubber hose can be used, preferably EPDM rubber hose, which is heat-resistant and flexible.

[0023] The working principle of the present utility model is: in this embodiment, the double-tube embedding mechanism can control the embedding and separation operations between the flow receiving tube 205 and the flow guide copper tube 102, so as to cooperate with the opening and closing actions of the furnace door 101. Specifically: in the initial state, the sliding plate 203 closely fits against the position limiting plate 201 at the top of the guide rail 2, at this time, the fastening rotating handle 209 is firmly combined with the fixing hole 202 at the top end of the guide rail 2 through threaded connection. After the furnace door 101 completes the closing action, an operator rotates the fastening rotating handle 209 to disengage it from the corresponding fixing hole 202; Further, the sliding plate (203) is slid downward along the guide rail (2) until it fits against the limiting plate (201) at the bottom of the guide rail (2). In this process, the flow receiving pipe (205) descends together with the sliding plate (203) and is accurately inserted into the corresponding flow receiving head (103). Then, the fastening rotating handle (209) is rotated again to re-establish threaded connection with the fixing hole (202) at the bottom end of the guide rail (2), so as to fix the positions of the sliding plate (203) and the flow receiving pipe (205); Further, when the furnace door (101) is about to be opened, the operation is performed in the reverse order. That is, the fastening rotating handle (209) is rotated first to separate it from the fixing hole (202) at the bottom end of the guide rail (2), then the sliding plate (203) is slid upward to disengage the flow receiving pipe (205) from the flow receiving head (103), and finally, the fastening rotating handle (209) is screwed into the corresponding fixing hole (202) to fix the position of the sliding plate (203) again; Further, based on the above structural layout, two drainage pipes (210) are provided, one of which is responsible for external connection of water source or cooling liquid through a water pump and provides liquid to one heat-resistant hose (204) and the flow receiving pipe (205); the other drainage pipe (210) is specially used for water and liquid discharge.

[0024] Further, when the flow receiving pipe (205) is embedded and connected with the flow receiving head (103), the sealing ring (208) will be embedded into the corresponding sealing groove (105) to form an interference fit. At the same time, the limiting ring (207) limits the position of the sealing ring (208), which effectively prevents the sealing ring (208) from being pushed upward out of the sealing groove (105) during the descending process of the stop valve (206), thereby ensuring a tighter fit between the sealing ring (208) and the sealing groove (105).

[0025] Further, when the stop valve (206) descends, the ejector rod (104) will be inserted into the stop valve (206) and push up the valve disc inside the stop valve. At this time, the spring outside the valve is compressed and contracted. In this state, the flow receiving head (103), the stop valve (206), the flow receiving pipe (205), the heat-resistant hose (204) and the drainage pipe (210) jointly form a through water channel. The water flow in the stop valve (206) can smoothly flow into the flow receiving head (103) and flow inside the furnace door (101) along the king-shaped pipeline inside the flow receiving head (103); Further, this design can significantly expand the cooling area and effectively absorb and take away the heat generated by the furnace door (101). Then, the water flow will flow into the corresponding limiting ring (207) and heat-resistant hose (204) through another flow receiving head (103), and finally be discharged by the drainage pipe (210) responsible for water and liquid discharge; Further, when the flow receiving pipe (205) moves upward along with the sliding plate (203), the stop valve (206) will disengage from the flow receiving head (103). At this time, the ejector rod (104) no longer applies a pushing force to the valve disc of the stop valve (206), and the valve disc will descend and reset under the reset action of the spring, thereby blocking the water flow; Furthermore, the heat-resistant hose 204, being a flexible hose, may still be affected by residual heat despite being located relatively above the furnace. Therefore, when selecting the hose material, cross-linked polyethylene, heat-resistant polyethylene, silicone rubber, EPDM rubber, etc., can be used, but are not limited to. Among these, EPDM rubber hose is preferred due to its good heat resistance and flexibility.

[0026] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A molybdenum strip processing reduction device, comprising a furnace door (101) rotatably assembled on one side of a reduction furnace (1), characterized in that: A flow guide copper pipe (102) is arranged inside the furnace door (101), the flow guide copper pipe (102) is arranged in a迂回 king-shaped manner, and both ends of the flow guide copper pipe extend to the outer side of the top of the furnace door (101), a double-pipe embedding mechanism is adjustably slidably arranged on the side wall of the reduction furnace (1) and above the furnace door (101).

2. The molybdenum bar direct reduction apparatus according to claim 1, wherein, The double-pipe embedding mechanism comprises: a guide rail (2) fixed to the side wall of the reduction furnace (1), and fixing holes (202) are provided at both ends of the guide rail (2).

3. The molybdenum bar direct reduction apparatus of claim 2, wherein: a sliding plate (203), the sliding plate (203) is in sliding fit with the guide rail (2), and limiting plates (201) are provided at both ends of the guide rail (2) to limit the sliding stroke of the sliding plate (203).

4. The apparatus for the reduction of molybdenum strip as claimed in claim 3, wherein: a tightening rotary handle (209), the tightening rotary handle (209) penetrates the middle part of the sliding plate (203) and is in threaded connection with any one of the fixing holes (202), and L-shaped flow receiving pipes (205) are fixed to both ends of the sliding plate (203).

5. The apparatus for the reduction of molybdenum strip as claimed in claim 4, wherein: flow receiving heads (103), the flow receiving heads (103) are fixedly connected to both ends of the flow guide copper pipe (102), and the two flow receiving heads (103) respectively form a water injection port and a water outlet to form a circulating water path.

6. The molybdenum bar direct reduction apparatus of claim 5, wherein: a stop valve (206), the stop valve (206) is arranged at the end of the flow receiving pipe (205), and a limiting ring (207) and a sealing ring (208) are sequentially fixedly connected to the outer wall of the stop valve (206).

7. The molybdenum strip direct reduction device of claim 6, wherein: a top rod (104) is fixedly connected in the flow receiving head (103) and is used for driving the valve core of the stop valve (206) to move.

8. The molybdenum bar direct reduction apparatus of claim 7, wherein: a sealing groove (105) is provided at the top of the flow receiving head (103), and the sealing groove (105) is in interference fit with the sealing ring (208).

9. The molybdenum bar direct reduction apparatus of claim 8, wherein: a heat-resistant hose (204) is connected to an end of the stop valve (206) facing the reduction furnace (1); a drainage pipe (210) is fixedly connected to the top of the reduction furnace (1) extending toward the limiting plate (201), and the drainage pipe (210) is fixedly communicated with the heat-resistant hose (204).

10. The molybdenum strip direct reduction device of claim 6, wherein: one end of the flow receiving pipe (205) is in sealed inserted connection with the flow receiving head (103), the axes of the two are coincident, and a fluid conduction channel is formed.

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