Double door structure of fifteen tube reduction furnace

Abstract

The utility model relates to the technical field of reduction furnace discloses a kind of double furnace door structure of fifteen tube reduction furnace, comprising: furnace tube, for loading boat, and furnace tube end portion has discharge port;Transition unit, including transition valve group, transition bin;Transition valve group is used to close discharge port, and transition bin is provided with atmosphere replacement group, pick-up valve group;Lifting disengagement unit is installed on furnace tube.The utility model improves the reduction atmosphere stability inside furnace tube under the condition of making small change to original furnace tube, solves the industry problem of material secondary oxidation in the production process of fifteen tube reduction furnace, plays key role to product upgrading;By setting the specific relative position of first atmosphere replacement port, second atmosphere replacement port, make hydrogen atmosphere flow from valve bin to pick-up bin one end, then from pick-up bin one end to the other end, finally from second atmosphere replacement port, ensure that transition bin is completely replaced by all gas, ensure that atmosphere in transition bin is stable.

Description

Technical Field

[0001] This utility model relates to the field of reduction furnace technology, specifically, to a double-door structure for a fifteen-tube reduction furnace. Background Technology

[0002] The fifteen-tube high-temperature reduction furnace is a large-scale device that uses hydrogen as the reducing gas. It is specifically designed to reduce tungsten oxide powder, molybdenum powder, and other materials at a set temperature. It is suitable for the production of coarse particles such as tungsten powder and molybdenum powder and has been widely used in large-scale enterprises in the tungsten powder and molybdenum powder production industry.

[0003] In existing applications of fifteen-tube reduction furnaces, a single furnace door structure is used. This has a drawback: when the furnace door is opened, the atmosphere inside the furnace tube is directly connected to the outside. If the hydrogen pressure is insufficient, outside air can easily enter the furnace tube, disrupting the hydrogen reduction atmosphere and causing secondary oxidation of the material, resulting in the vessel turning blue. Furthermore, if the hydrogen-oxygen mixture reaches a certain ratio, it can also cause the risk of explosion. Utility Model Content

[0004] The purpose of this invention is to provide a double-door structure for a fifteen-tube reduction furnace, which solves the problem that when the furnace door is opened to remove parts in existing reduction furnaces, the atmosphere inside the furnace tubes is directly connected to the outside, and outside air can easily enter the furnace tubes, affecting the quality of materials or even causing safety accidents.

[0005] This utility model is achieved through the following technical solution: a double-door structure for a fifteen-tube reduction furnace, comprising:

[0006] A furnace tube for loading a vessel, the furnace tube having a discharge port at its end;

[0007] The transition unit includes a transition valve group and a transition chamber; the transition valve group is used to close the discharge port, and the transition chamber is equipped with an atmosphere replacement group and a part removal valve group;

[0008] A lifting and disengagement unit is installed on the furnace tube;

[0009] The lifting and detachment unit pushes the boat from the furnace tube through the discharge port to the transition chamber. After the transition valve group closes the discharge port, it opens the removal valve group to remove the boat. Then, the atmosphere in the transition chamber is replaced by the atmosphere replacement group.

[0010] To better realize this utility model, the transition chamber further includes a valve chamber and a material receiving chamber. One end of the material receiving chamber is installed on the valve chamber, and the valve chamber is installed at the end of the furnace tube. The other end of the material receiving chamber is provided with a part receiving port, and the part receiving valve group is installed on the part receiving port.

[0011] To better realize this utility model, the part-retrieving valve assembly further includes a control unit and a part-retrieving valve, wherein the part-retrieving valve includes a part-retrieving valve and a sealing ring is installed on the part-retrieving valve corresponding to the part-retrieving port.

[0012] To better realize this utility model, the control unit further includes an opening lever and a reset retaining rod. The opening lever is rotatably connected to the material picking bin and is connected to the material picking valve. One end of the reset retaining rod is hinged to the material picking bin, and the other end is connected to the opening lever.

[0013] To better realize this utility model, the atmosphere replacement group further includes a first atmosphere replacement port and a second atmosphere replacement port, the first atmosphere replacement port being installed on the valve chamber and the second atmosphere replacement port being installed on the part removal valve.

[0014] To better realize this utility model, the transition valve group further includes a valve hydraulic cylinder and a transition valve. The transition valve is installed at the output end of the valve hydraulic cylinder, the valve hydraulic cylinder is installed on the valve chamber, and the transition valve is used to close the discharge port.

[0015] To better realize this utility model, the lifting and detachment unit further includes a pushing hydraulic cylinder, a separating hydraulic cylinder, and a receiving plate. The pushing hydraulic cylinder and the separating hydraulic cylinder are installed on the furnace tube, and the receiving plate is set at the output end of the separating hydraulic cylinder. The pushing hydraulic cylinder and the separating hydraulic cylinder are arranged perpendicularly.

[0016] To better realize this utility model, the lifting and disengagement unit further includes a guide sleeve plate and a guide rod. The guide sleeve plate is disposed on the furnace tube, and the guide rod is installed on the receiving plate. The guide sleeve plate is connected to the guide rod.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] (1) By setting a transition unit, this utility model improves the stability of the reducing atmosphere inside the furnace tube with minor modifications to the original furnace tube, solves the industry problem of secondary oxidation of materials during the production process of the fifteen-tube reduction furnace, and avoids safety accidents; it also greatly improves the quality of the reduced powder, and the structure used is simple to manufacture and easy to disassemble and assemble.

[0019] (2) By setting specific relative positions of the first atmosphere replacement port and the second atmosphere replacement port, the present invention allows hydrogen atmosphere to flow from the valve chamber to one end of the material taking chamber, then from one end of the material taking chamber to the other end, and finally out from the second atmosphere replacement port, ensuring that all gases in the transition chamber are completely replaced and ensuring the stability of the atmosphere in the transition chamber. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the lifting and disengagement unit structure.

[0023] Figure 4 This is a schematic diagram of the transition unit structure.

[0024] Wherein: 20-Transition unit; 30-Boat; 101-Furnace tube; 102-Pushing hydraulic cylinder; 103-Guide sleeve; 104-Guide rod; 105-Separation hydraulic cylinder; 106-Receiving plate; 107-Discharge port; 201-Valve hydraulic cylinder; 202-First atmosphere replacement port; 203-Transition valve; 204-Valve compartment; 205-Retrieving compartment; 206-Reset holding rod; 207-Second atmosphere replacement port; 208-Retrieving valve; 209-Opening mechanism. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1:

[0028] This embodiment provides a double-door structure for a fifteen-tube reduction furnace, specifically as follows: Figure 1 , Figure 2 As shown, it includes:

[0029] Furnace tube 101 is used to load boat 30, and the end of furnace tube 101 has a discharge port 107;

[0030] The transition unit 20 includes a transition valve group and a transition chamber; the transition valve group is used to close the discharge port 107, and the transition chamber is equipped with an atmosphere replacement group and a part removal valve group;

[0031] The lifting and disengagement unit is installed on the furnace tube 101.

[0032] The lifting and detachment unit catches and lowers a boat 30, breaking the adhesion between the boats 30; it opens the transition valve group and then pushes it to the transition chamber through the discharge port 107. The transition valve group closes the discharge port 107 and then opens the part removal valve group. The robot arm takes out the boat 30, and then closes the part removal valve group. After that, the atmosphere in the transition chamber is replaced by the atmosphere replacement group.

[0033] With the above settings, the stability of the reducing atmosphere inside the furnace tube 101 is improved by making minor modifications to the original furnace tube 101, solving the industry problem of secondary oxidation of materials during the production process of the fifteen-tube reduction furnace, and playing a key role in improving product quality.

[0034] Example 2:

[0035] This embodiment further extends the transition unit 20 based on the above embodiment, specifically as follows: Figure 2 , Figure 4 As shown, the transition chamber includes a valve chamber 204 and a material receiving chamber 205. One end of the material receiving chamber 205 is mounted on the valve chamber 204, and the valve chamber 204 is mounted on the end of the furnace tube 101. The other end of the material receiving chamber 205 is provided with a part receiving port, and a part receiving valve assembly is mounted on the part receiving port. The part receiving valve assembly includes a control unit and a part receiving valve. The part receiving valve includes a part receiving valve 208, and a sealing ring is installed on the part receiving valve 208 corresponding to the part receiving port. The control unit includes an opening lever 209 and a reset retaining lever 206. The opening lever 209 is rotatably connected to the material receiving chamber 205 and is connected to the part receiving valve 208. One end of the reset retaining lever 206 is hinged to the material receiving chamber 205, and the other end is connected to the opening lever 209.

[0036] When retrieving the boat 30, press one end of the opening lever 209. At this time, the other end of the opening lever 209 will drive the retrieval valve 208 to rotate and open synchronously due to the lever action. Simultaneously, the movement of the retrieval valve 208 will cause the length of the reset holding lever 206 to change. At this time, the spring on the reset holding lever 206 will begin to store force. After the retrieval valve 208 is fully opened, the robotic arm will hook the boat 30 out. Then, release the opening lever 209. Under the elastic force of the spring on the reset holding lever 206, the retrieval valve 208 will reset and press firmly against the retrieval port.

[0037] Furthermore, the atmosphere replacement assembly includes a first atmosphere replacement port 202 and a second atmosphere replacement port 207. The first atmosphere replacement port 202 is installed on the valve chamber 204, and the second atmosphere replacement port 207 is installed on the part removal valve 208.

[0038] Remove the boat 30. After the part removal valve 208 is closed, add hydrogen atmosphere through the second atmosphere replacement port 207. At this time, hydrogen flows from the valve chamber 204 to one end of the part removal chamber 205, then from one end of the part removal chamber 205 to the other end, and finally flows out from the second atmosphere replacement port 207. This replaces all the gas in the transition chamber to ensure that the atmosphere in the transition chamber is stable.

[0039] Furthermore, the transition valve assembly includes a valve hydraulic cylinder 201 and a transition valve 203. The transition valve 203 is installed at the output end of the valve hydraulic cylinder 201, and the valve hydraulic cylinder 201 is installed on the valve chamber 204. The transition valve 203 is used to close the discharge port 107.

[0040] When the discharge port 107 needs to be opened, the valve hydraulic cylinder 201 retracts, causing the transition valve 203 to move upward; when the discharge port 107 needs to be closed, the valve hydraulic cylinder 201 extends, causing the transition valve 203 to move downward; since the valve chamber 204 is equipped with an inspection window, the sealing ring on the transition valve 203 can be replaced directly without disassembling the connecting flange, which is more convenient.

[0041] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0042] Example 3:

[0043] This embodiment further expands the lifting and disengagement unit based on the above embodiment, specifically as follows: Figure 1 , Figure 2 , Figure 3 As shown, the lifting and detachment unit includes a pushing hydraulic cylinder 102, a separating hydraulic cylinder 105, and a receiving plate 106. The pushing hydraulic cylinder 102 and the separating hydraulic cylinder 105 are installed on the furnace tube 101. The receiving plate 106 is located at the output end of the separating hydraulic cylinder 105. The pushing hydraulic cylinder 102 and the separating hydraulic cylinder 105 are arranged perpendicularly.

[0044] When the boat 30 needs to be removed, the separation hydraulic cylinder 105 extends, and the receiving plate 106 receives the boat 30. Then the separation hydraulic cylinder 105 retracts, and the boat 30 moves down under the action of gravity according to the receiving plate 106 to ensure that the adjacent boat 30 is disconnected. Then the pushing hydraulic cylinder 102 extends, and the output end of the pushing hydraulic cylinder 102 abuts against the boat 30, pushing the boat 30 out of the discharge port 107.

[0045] Furthermore, the lifting and disengagement unit also includes a guide sleeve 103 and a guide rod 104. The guide sleeve 103 is disposed on the furnace tube 101, and the guide rod 104 is installed on the receiving plate 106. The guide sleeve 103 is connected to the guide rod 104.

[0046] The guide sleeve 103 guides the guide rod 104 to ensure the stability of the moving trajectory of the receiving plate 106 and prevent the separation hydraulic cylinder 105 from shaking during the extension and retraction process; at the same time, it avoids excessive wear of the separation hydraulic cylinder 105 caused by the lateral force on the receiving plate 106 when the pushing hydraulic cylinder 102 pushes the boat 30.

[0047] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A double-door structure for a fifteen-tube reduction furnace, characterized in that, include: A furnace tube (101) is used to load a boat (30), and the furnace tube (101) has a discharge port (107) at its end; The transition unit (20) includes a transition valve group and a transition chamber; the transition valve group is used to close the discharge port (107), and the transition chamber is equipped with an atmosphere replacement group and a part removal valve group; A lifting and disengagement unit is installed on the furnace tube (101); The lifting and detachment unit pushes the boat (30) from the furnace tube (101) through the discharge port (107) to the transition chamber. The transition valve group closes the discharge port (107) and then opens the take-out valve group to take out the boat (30). After that, the atmosphere in the transition chamber is replaced by the atmosphere replacement group.

2. The double-door structure of a fifteen-tube reduction furnace according to claim 1, characterized in that: The transition chamber includes a valve chamber (204) and a material taking chamber (205). One end of the material taking chamber (205) is installed on the valve chamber (204), and the valve chamber (204) is installed at the end of the furnace tube (101). The other end of the material taking chamber (205) is provided with a part taking port, and the part taking valve group is installed on the part taking port.

3. The double-door structure of a fifteen-tube reduction furnace according to claim 2, characterized in that: The part retrieval valve assembly includes a control unit and a part retrieval valve. The part retrieval valve includes a part retrieval valve (208), and a sealing ring is installed on the part retrieval valve (208) corresponding to the part retrieval port.

4. The double-door structure of a fifteen-tube reduction furnace according to claim 3, characterized in that: The control unit includes an opening lever (209) and a reset retaining lever (206). The opening lever (209) is rotatably connected to the material receiving bin (205) and is connected to the material receiving valve (208). One end of the reset retaining lever (206) is hinged to the material receiving bin (205), and the other end is connected to the opening lever (209).

5. The double-door structure of a fifteen-tube reduction furnace according to claim 2, characterized in that: The atmosphere replacement assembly includes a first atmosphere replacement port (202) and a second atmosphere replacement port (207). The first atmosphere replacement port (202) is installed on the valve chamber (204), and the second atmosphere replacement port (207) is installed on the part removal valve (208).

6. The double-door structure of a fifteen-tube reduction furnace according to claim 2, characterized in that: The transition valve assembly includes a valve hydraulic cylinder (201) and a transition valve (203). The transition valve (203) is installed at the output end of the valve hydraulic cylinder (201). The valve hydraulic cylinder (201) is installed on the valve chamber (204). The transition valve (203) is used to close the discharge port (107).

7. A double-door structure for a fifteen-tube reduction furnace according to any one of claims 1-6, characterized in that: The lifting and detachment unit includes a pushing hydraulic cylinder (102), a separating hydraulic cylinder (105), and a receiving plate (106). The pushing hydraulic cylinder (102) and the separating hydraulic cylinder (105) are installed on the furnace tube (101). The receiving plate (106) is located at the output end of the separating hydraulic cylinder (105). The pushing hydraulic cylinder (102) and the separating hydraulic cylinder (105) are arranged perpendicularly.

8. The double-door structure of a fifteen-tube reduction furnace according to claim 7, characterized in that: The lifting and disengagement unit also includes a guide sleeve (103) and a guide rod (104). The guide sleeve (103) is disposed on the furnace tube (101), and the guide rod (104) is installed on the receiving plate (106). The guide sleeve (103) is connected to the guide rod (104).

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