Double-furnace-door sealed high-temperature calcining furnace

Abstract

The utility model relates to the technical field of calcining furnaces, in particular to a double-furnace-door sealing high-temperature calcining furnace which comprises a conveying platform and a transition cabin, one end of the transition cabin is rotatably connected with an outer sealing door, the other end of the transition cabin is fixedly connected with a protection frame, and the interior of the protection frame is fixedly connected with an inner furnace. And an inner door is rotationally connected between the transition cabin and the protective frame. The device adopts a basic structure of the double-furnace-door airlock chamber, the transition cabin is isolated from the outside and the inner furnace through the outer sealing door and the inner door, and the device has the core advantages that physical isolation between the feeding and discharging process and the high-temperature atmosphere environment in the furnace is realized, so that material transmission is completed on the premise of maintaining the stability of the process conditions in the furnace, and the service life of the material is prolonged. The energy utilization efficiency is remarkably improved, the process atmosphere is protected, the production continuity and safety are improved, and the problems of a traditional high-temperature furnace in the aspects of atmosphere maintenance, heat energy management and continuous production are effectively solved through an exquisite mechanical structure and systematic design.

Description

Technical Field

[0001] This utility model relates to the field of calcining furnace technology, specifically to a double-door sealed high-temperature calcining furnace. Background Technology

[0002] When processing metals, a calcining furnace is needed to forge them at high temperatures to make them stronger and increase their service life after processing.

[0003] Chinese utility model patent CN218855528U discloses a high-temperature calcining furnace for metal processing, which includes "a device body, a support mechanism, a body mechanism, and a sealing mechanism, wherein the support mechanism is located below the device body, the body mechanism is located above the support mechanism, and the sealing mechanism is located at the front end of the body mechanism, and the sealing mechanism includes a furnace cover plate, a handle, a rotating groove, a connecting block, a circular rod, a slider, and a locking block"; In traditional single-door high-temperature furnaces, the furnace chamber is directly exposed to the external environment during material feeding and discharging, which leads to a rapid loss of high-temperature heat inside the furnace. Utility Model Content

[0004] The purpose of this invention is to provide a double-door sealed high-temperature calcining furnace to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-door sealed high-temperature calcining furnace, including a transition chamber, one end of which is rotatably connected to an outer sealing door, the other end of which is fixedly connected to a protective frame, an inner furnace being fixedly connected inside the protective frame, and an inner door being rotatably connected between the transition chamber and the protective frame.

[0006] The beneficial effects of this utility model are as follows: By adopting the basic structure of a double-furnace-door airlock chamber, the transition chamber is isolated from the outside world and the inner furnace through the outer sealing door and the inner door. The core advantage is that it realizes the physical isolation between the material feeding and discharging process and the high-temperature atmosphere environment inside the furnace. Thus, while maintaining the stability of the process conditions inside the furnace, the material transfer is completed, which significantly improves energy utilization efficiency, protects the process atmosphere, and enhances the continuity and safety of production.

[0007] To achieve atmosphere control in the transition chamber and material transfer station:

[0008] The transition chamber is further configured as follows: the other end of the chamber is fixedly connected to one end of the protective frame, one end of the chamber is fixedly connected to the frame, both sides of the chamber are fixedly connected to a main pipe and an auxiliary pipe, the middle of the main pipe is fixedly connected to an inflation / deflation valve, the upper and lower ends of the opposite sides of the main pipe and the auxiliary pipe are fixedly connected to insertion tubes, and the four insertion tubes are arranged in groups of two, with the opposite sides of the two groups of insertion tubes penetrating and connected inside the chamber. The top of the main pipe and the auxiliary pipe is fixedly connected to a connecting air pipe, the inner walls of both sides of the chamber are fixedly connected to a fixing seat, the side surfaces of the two fixing seats are rotatably connected to a locking plate, and the inward-facing side of the two locking plates is fixedly connected to a handle.

[0009] By adopting the above technical solution, a gas pipeline system is formed by the main pipe, the charging and discharging valve, the auxiliary pipe and the connecting gas pipe. This system is used to evacuate the transition chamber, fill it with protective gas or perform gas replacement, so as to ensure that the surrounding environment of the material before it enters the inner furnace is consistent with the atmosphere inside the furnace.

[0010] To achieve multi-point, multi-directional mechanical locking and sealing function:

[0011] Further configured as follows: the outer sealing door includes an outer hinge, one end of which is fixedly connected to the outward-facing side of the cabin frame. A sealing frame is sleeved on the side surface of the inner shaft of the outer hinge. An outer door frame is fixedly connected inside the sealing frame. A locking rod is passed through one side of the inner side of the outer door frame. Hook rods are fixedly connected to both the inner and outer sides of the outer door frame through the locking rod. An active plate is rotatably connected to the other end of the locking rod. An angle seat is sleeved on both the upper and lower ends of the active plate. An auxiliary plate is sleeved on the other end of the two angle seats. Another auxiliary plate is sleeved on the other end of each of the two auxiliary plates through the angle seats. A Y rod is passed through both the upper and lower ends of the active plate facing the outer door frame. The top auxiliary plate is movably engaged with the inner wall of the cabin frame through the Y rod. One side of the Y rod is rotatably connected to the inner wall of the outer door frame.

[0012] By adopting the above technical solution, the locking rod drives the active plate, and then the corner seat links the auxiliary plate and the Y rod, so that multiple locking points are pressed simultaneously at different positions of the cabin frame, thereby making the outer door sealing pressure uniform and the operation convenient.

[0013] To achieve a reliable seal and facilitate linkage with the furnace body, the inner door is designed as follows:

[0014] Further configured as follows: the inner door includes two inner hinges, one end of each inner hinge is fixedly connected to both ends of the protective frame, a sealed furnace door is fixedly connected to the side surface of the inner hinge shaft, a lock handle is connected through one side inside the sealed furnace door, a bracket is fixedly connected to the top of the sealed furnace door facing the bulkhead, an insert rod is slidably connected to the top of the bracket, a docking frame is connected through the side surface of the top of the insert rod, and one side of each docking frame is fixedly connected to one side of the top of the protective frame.

[0015] By adopting the above technical solution and through the linkage locking design, the card seat, the insertion rod and the docking frame constitute a set of safety linkage mechanisms. When the inner door is closed, the insertion rod falls into the docking frame through the spring, realizing automatic or semi-automatic additional locking, which enhances the stability of the inner door when subjected to positive or negative pressure in the furnace, and improves the safety and automation of the equipment.

[0016] To support the inner furnace and connect the transition compartment:

[0017] The further configuration is as follows: the protective frame includes a base plate, one end of which is fixedly connected to one end of the bulkhead, and four perforated frames are fixedly connected to the top of the base plate. Side plates are fixedly connected to the opposite side surfaces of the perforated frames, and a top plate is fixedly connected to the top of the perforated frames. A protruding frame is fixedly connected to the top of the perforated frames facing the bulkhead, and the side of the protruding frame facing the bulkhead is fixedly connected to one side of the docking frame.

[0018] By adopting the above technical solution, a rigid outer frame is formed by the hollow frame, side plates and top plate, which provides stable support and installation benchmark for the inner furnace and furnace door, and ensures the structural stability of the entire equipment.

[0019] To achieve cooling of the high-temperature furnace:

[0020] The furnace is further configured such that: the inner furnace includes two supports, the bottom of the two supports is fixedly connected to the top of the base plate, the top of the two supports is fixedly connected to a furnace wall, the inside of the furnace wall is fixedly connected to a heat insulation layer, the side surface of the furnace wall is fixedly connected to a water-cooling pipe, the outer side of the water-cooling pipe is fixedly connected to a furnace outer frame, the two ends of the water-cooling pipe are fixedly connected to inlet and outlet water pipes, and the side surfaces of the inlet and outlet water pipes penetrate and connect to the inside of the furnace outer frame and the side plate.

[0021] By adopting the above technical solution, a high-temperature working cavity is formed by the furnace wall and the insulation layer, which reduces heat loss. The water cooling pipe, the inlet and outlet water pipe and the outer frame of the furnace form a jacketed water cooling structure, which protects the furnace structure and improves the working environment. By adjusting the water flow, the furnace can be actively cooled to a certain extent.

[0022] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall left side structure of this utility model;

[0024] Figure 2 This is an enlarged structural schematic diagram of the transition chamber of this utility model;

[0025] Figure 3This is an enlarged structural schematic diagram of the outer sealing door of this utility model;

[0026] Figure 4 This is a schematic diagram of the overall internal structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the connection structure between the protective frame and the inner furnace of this utility model;

[0028] Figure 6 This is an enlarged structural diagram of the inner door of this utility model;

[0029] Figure 7 This is an enlarged structural diagram of the protective frame of this utility model;

[0030] Figure 8 This is an enlarged schematic diagram of the inner furnace structure of this utility model.

[0031] In the diagram: 1. Transition compartment; 101. Bulkhead; 102. Frame; 103. Main pipe; 104. Inflation / expansion valve; 105. Insertion tube; 106. Auxiliary pipe; 107. Connecting air pipe; 108. Fixing seat; 109. Clamping plate; 1010. Handle; 2. External sealing door; 201. External hinge; 202. Sealing frame; 203. External door frame; 204. Locking rod; 205. Hook rod; 206. Active plate; 207. Angle seat; 208. Auxiliary plate 209. Y-bar; 3. Inner door; 301. Inner hinge; 302. Sealed furnace door; 303. Lock handle; 304. Card seat; 305. Insert rod; 306. Connecting frame; 4. Protective frame; 401. Base plate; 402. Hollow frame; 403. Side plate; 404. Top plate; 405. Protruding frame; 5. Inner furnace; 501. Support; 502. Furnace wall; 503. Insulation layer; 504. Water cooling pipe; 505. Inlet and outlet water pipes; 506. Outer furnace frame. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0033] Please see Figures 1 to 8 The double-door sealed high-temperature calcining furnace includes a transition chamber 1. One end of the transition chamber 1 is rotatably connected to an outer sealing door 2, and the other end of the transition chamber 1 is fixedly connected to a protective frame 4. An inner furnace 5 is fixedly connected inside the protective frame 4, and an inner door 3 is rotatably connected between the transition chamber 1 and the protective frame 4.

[0034] In this embodiment, as Figure 2As shown, the transition chamber 1 includes a bulkhead 101. The other end of the bulkhead 101 is fixedly connected to one end of the protective frame 4. One end of the bulkhead 101 is fixedly connected to the frame 102. Both sides of the bulkhead 101 are fixedly connected to a main pipe 103 and an auxiliary pipe 106. The middle of the main pipe 103 is fixedly connected to an inflation / deflation valve 104. The upper and lower ends of the opposite side of the main pipe 103 and the auxiliary pipe 106 are fixedly connected to insertion tubes 105. The four insertion tubes 105 are arranged in pairs, and the opposite sides of the two sets of insertion tubes 105 are connected through the bulkhead 101. The top of the main pipe 103 and the auxiliary pipe 106 are fixedly connected to a connecting air pipe 107. The inner walls of both sides of the bulkhead 101 are fixedly connected to a fixing seat 108. The side surfaces of the two fixing seats 108 are rotatably connected to a locking plate 109. The inward side of the two locking plates 109 is fixedly connected to a handle 1010.

[0035] In this embodiment, as Figure 3 As shown, the outer sealing door 2 includes an outer hinge 201. One end of the outer hinge 201 is fixedly connected to the outward side of the frame 102. A sealing frame 202 is sleeved on the side surface of the inner shaft of the outer hinge 201. An outer door frame 203 is fixedly connected inside the sealing frame 202. A locking rod 204 is connected through one side inside the outer door frame 203. The locking rod 204 extends to both the inner and outer sides of the outer door frame 203 and is fixedly connected to hook rods 205. The other end of the locking rod 204 is rotatably connected to an active plate 206. Both ends of the active plate 206 are fitted with corner seats 207, and the other ends of the two corner seats 207 are fitted with auxiliary plates 208. The other ends of the two auxiliary plates 208 are fitted with another auxiliary plate 208 through the corner seats 207. Both ends of the active plate 206 facing the outer door frame 203 are connected with Y rods 209. The top auxiliary plate 208 is movably engaged with the inner wall of the cabin frame 102 through the Y rods 209, and one side of the Y rods 209 is rotatably connected to the inner wall of the outer door frame 203.

[0036] In this embodiment, as Figure 6 As shown, the inner door 3 includes two inner hinges 301. One end of each inner hinge 301 is fixedly connected to both ends of the protective frame 4. A sealed furnace door 302 is fixedly connected to the side surface of the inner hinge 301 shaft. A lock handle 303 is connected through one side inside the sealed furnace door 302. A bracket 304 is fixedly connected to the top of the sealed furnace door 302 facing the bulkhead 101. A plug rod 305 is slidably connected to the top of the bracket 304. A docking frame 306 is connected through the side surface of the top of the plug rod 305. One side of each docking frame 306 is fixedly connected to one side of the top of the protective frame 4.

[0037] In this embodiment, as Figure 7As shown, the protective frame 4 includes a base plate 401, one end of which is fixedly connected to one end of the bulkhead 101. The four corners of the top of the base plate 401 are fixedly connected to a perforated frame 402. The side surfaces of the perforated frame 402 are fixedly connected to each other. The top of the perforated frame 402 is fixedly connected to a top plate 404. The top of the perforated frame 402 facing the bulkhead 101 is fixedly connected to a protruding frame 405, and the side of the protruding frame 405 facing the bulkhead 101 is fixedly connected to one side of the docking frame 306.

[0038] In this embodiment, as Figure 8 As shown, the inner furnace 5 includes two supports 501. The bottom of the two supports 501 is fixedly connected to the top of the base plate 401. The top of the two supports 501 is fixedly connected to the furnace wall 502. The inside of the furnace wall 502 is fixedly connected to the heat insulation layer 503. The side surface of the furnace wall 502 is fixedly connected to the water cooling pipe 504. The outer side of the water cooling pipe 504 is fixedly connected to the furnace outer frame 506. The two ends of the water cooling pipe 504 are fixedly connected to the inlet and outlet water pipes 505. The side surface of the inlet and outlet water pipes 505 penetrates and connects to the inside of the furnace outer frame 506 and the side plate 403.

[0039] The working process of this double-door sealed high-temperature calcining furnace is as follows:

[0040] During high-temperature calcination of raw materials, the water-cooling pipe 504 between the furnace wall 502 and the outer frame 506 is used to regulate the internal temperature. The inlet and outlet water pipes 505 facilitate water replacement. During calcination inside the inner furnace 5, the heat insulation layer 503 ensures the internal temperature and prevents cracking. When it needs to be removed, the hook rod 205 is gripped and rotated upwards. The locking rod 204 on one side of the outer door frame 203 inside the compartment frame 102 and the compartment wall 101 drives the active plate 206, the corner seat 207, and the auxiliary plate 208 in conjunction. The Y-bars 209 on the inner side of the active plate 206 and the other two auxiliary plates 208 rotate and detach from the inner wall of the compartment frame 102. The outer door frame 203 is pulled apart from the compartment frame 102 by the outer hinge 201. When entering the compartment wall 101, the hook rod 205 on the inner wall of the outer door frame 203 is gripped and pressed down to close it again. Next, slide the insert rods 305 in the two card seats 304 out of the docking frame 306 outside the convex frame 405. Then pull the sealing furnace door 302 at one end of the lock handle 303. At this time, the sealing furnace door 302 on the side surface of the inner hinge 301 is against the inner side wall of the bulkhead 101. Then, hold the handle 1010 and the card plate 109 and rotate it on the side surface of the fixed seat 108 to fix the sealing furnace door 302. At the same time, the main pipe 103 and auxiliary pipe 106 on the outside of the bulkhead 101 exchange air through the connecting gas pipe 107. The charging and discharging valve 104 inputs various gases into the bulkhead 101 through the insert pipe 105, thereby adjusting the gas inside the transition compartment 1 and discharging the gas entering from the outside. After opening the inner door 3, the calcined raw material is extracted from the inner furnace 5. The inner door 3 at one end of the protective frame 4 is closed. The outer sealing door 2 is reopened to take out the calcined raw material.

[0041] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0042] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A double-door sealed high-temperature calcining furnace, including a transition chamber (1), characterized in that: One end of the transition chamber (1) is rotatably connected to an outer sealing door (2), and the other end of the transition chamber (1) is fixedly connected to a protective frame (4). An inner furnace (5) is fixedly connected inside the protective frame (4), and an inner door (3) is rotatably connected between the transition chamber (1) and the protective frame (4).

2. The double-door sealed high-temperature calcining furnace as described in claim 1, characterized in that: The transition chamber (1) includes a bulkhead (101), one end of which is fixedly connected to one end of a protective frame (4). One end of the bulkhead (101) is fixedly connected to a frame (102). Both sides of the bulkhead (101) are fixedly connected to a main pipe (103) and an auxiliary pipe (106). A charging / discharging valve (104) is fixedly connected to the middle of the main pipe (103). Insertion tubes (105) are fixedly connected to the upper and lower ends of the opposite sides of the main pipe (103) and the auxiliary pipe (106). The four intubation tubes (105) are connected in pairs, and the two pairs of intubation tubes (105) are connected to the opposite side of the cabin wall (101). The top of the main tube (103) and the auxiliary tube (106) are fixedly connected to the connecting air tube (107). The inner walls on both sides of the cabin wall (101) are fixedly connected to the fixing seats (108). The side surfaces of the two fixing seats (108) are rotatably connected to the clamping plates (109). The inward side of the two clamping plates (109) is fixedly connected to the handle (1010).

3. The double-door sealed high-temperature calcining furnace as described in claim 2, characterized in that: The outer sealing door (2) includes an outer hinge (201), one end of which is fixedly connected to the outward side of the frame (102). A sealing frame (202) is sleeved on the side surface of the inner shaft of the outer hinge (201). An outer door frame (203) is fixedly connected inside the sealing frame (202). A locking rod (204) is connected through one side inside the outer door frame (203). The locking rod (204) extends to both the inner and outer sides of the outer door frame (203) and is fixedly connected to hook rods (205). The other end of the locking rod (204) is rotatably connected to an active plate (206). The active plate (206) is fitted with corner seats (207) at both the upper and lower ends, and the other ends of the two corner seats (207) are fitted with auxiliary plates (208). The other ends of the two auxiliary plates (208) are fitted with another auxiliary plate (208) through the corner seats (207). The active plate (206) is connected to Y rods (209) through both the upper and lower ends facing the outer door frame (203). The auxiliary plate (208) at the top is movably engaged with the inner wall of the cabin frame (102) through the Y rods (209), and one side of the Y rods (209) is rotatably connected to the inner wall of the outer door frame (203).

4. The double-door sealed high-temperature calcining furnace as described in claim 2, characterized in that: The inner door (3) includes two inner hinges (301), one end of each inner hinge (301) is fixedly connected to both ends of the protective frame (4), a sealed furnace door (302) is fixedly connected to the side surface of the inner hinge (301) shaft, a lock handle (303) is connected through one side inside the sealed furnace door (302), a card seat (304) is fixedly connected to the top of the sealed furnace door (302) facing the bulkhead (101), a plug rod (305) is slidably connected to the top of the card seat (304), a docking frame (306) is connected through the side surface of the top of the plug rod (305), and one side of each docking frame (306) is fixedly connected to one side of the top of the protective frame (4).

5. The double-door sealed high-temperature calcining furnace as described in claim 2, characterized in that: The protective frame (4) includes a base plate (401), one end of which is fixedly connected to one end of the bulkhead (101). The four corners of the top of the base plate (401) are fixedly connected to a perforated frame (402). The side surfaces of the perforated frame (402) are fixedly connected to each other. The top of the perforated frame (402) is fixedly connected to a top plate (404). The top of the perforated frame (402) facing the bulkhead (101) is fixedly connected to a protruding frame (405), and the side of the protruding frame (405) facing the bulkhead (101) is fixedly connected to the side of the docking frame (306).

6. The double-door sealed high-temperature calcining furnace as described in claim 5, characterized in that: The inner furnace (5) includes two supports (501), the bottom of the two supports (501) is fixedly connected to the top of the base plate (401), the top of the two supports (501) is fixedly connected to the furnace wall (502), the inside of the furnace wall (502) is fixedly connected to the heat insulation layer (503), the side surface of the furnace wall (502) is fixedly connected to the water cooling pipe (504), the outer side of the water cooling pipe (504) is fixedly connected to the furnace outer frame (506), the two ends of the water cooling pipe (504) are fixedly connected to the inlet and outlet water pipes (505), and the side surface of the inlet and outlet water pipes (505) penetrates and connects to the inside of the furnace outer frame (506) and the side plate (403).

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