Cover type annealing furnace with heat insulation protection structure

Abstract

The invention relates to the field of annealing furnace protection, and discloses a cover type annealing furnace with a heat insulation protection structure, the cover type annealing furnace comprises a base mechanism and a protection mechanism arranged above the base mechanism, the base mechanism comprises a base, a connecting plate is fixedly connected to the lower portion of the outer side of the base, and an annular plate is fixedly connected to the upper portion of the side, away from the base, of the connecting plate; according to the invention, deionized water stored in the annular plate is used for liquid sealing, so that the liquid level always submerges the joint of the inner shell and the base, the fluidity of the deionized water can compensate the microscopic unevenness of the contact surface, and dynamic sealing is realized; in the heat preservation stage, the system can close the water drainage short pipe valve and start the air pump to actively pump out gas and water vapor in the cavity between the outer shell and the inner shell, a low-vacuum environment is formed, vacuum is an excellent heat insulation layer, and heat loss is further reduced.

Description

Technical Field

[0001] The invention relates to the technical field of annealing furnace protection, in particular to a bell-type annealing furnace with a heat insulation protection structure. Background Art

[0002] In the patent application with application publication number CN222923186U, it includes a furnace body and a vehicle plate, wherein the furnace body is provided with a carrier, the carrier is provided with multiple through holes, the bottom of the carrier is fixedly connected to multiple first ground wheels, the inner walls on both sides of the furnace body are fixedly connected to multiple heating tubes, the bottom inner wall of the furnace body is fixedly connected to two first guide rails, the first ground wheel rolls in the first guide rails, one outer wall of the furnace body is fixedly connected to a motor, the output end of the motor is fixedly installed with a screw rod, and the screw rod is set on the bottom inner wall of the furnace body. This application rotates the screw rod under the drive of the motor, thereby driving the push plate to move, and then pushing the carrier outward, so that the first ground wheel rolls in the first guide rail, so that the first ground wheel slides along the first guide rail into the second guide rail, thereby moving the carrier to the vehicle plate, thereby realizing automatic unloading operation, without manual operation, to avoid scalding of workers.

[0003] In the above patent, some of the existing bell-type annealing furnaces have high outer surface temperatures, resulting in a large amount of heat loss, causing energy waste and a surge in production costs. Heat loss will cause the workshop environment to be hot and harsh, endangering the health of workers, and the aging and failure of rubber seals will cause oxidation or nitridation of steel in the furnace, causing the entire furnace product to be scrapped in batches, resulting in huge economic losses. Summary of the Invention

[0004] The object of the present invention is to provide a bell-type annealing furnace with a heat insulation protection structure to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the technical solution of the present invention is: a bell-type annealing furnace with a heat-insulating protective structure, comprising a base mechanism and a protective mechanism arranged above the base mechanism, the base mechanism comprising a base, a connecting plate fixedly connected to the lower side of the base, an annular plate fixedly connected to the upper side of the connecting plate away from the base, a connecting shell fixedly connected to the outer side of the annular plate, a fixing pipe fixedly connected to the outer side of the connecting shell, a connecting hole formed on the annular plate and connected to the interior of the connecting shell, and an inner cover placed above the base; The protective mechanism includes an outer shell arranged on a base mechanism, an inner shell arranged inside the outer shell, a cavity formed between the outer shell and the inner shell, a heating component for heating the inner cover arranged inside the inner shell, and a cooling component and an exhaust component arranged outside the outer shell.

[0006] Preferably, a plurality of short drainage pipes are fixedly connected to the lower outer side of the shell, a connecting ring is fixedly connected to the lower inner side of the shell, a through hole is opened on the top of the shell, an exhaust pipe is fixedly connected to one side of the upper side of the shell, and valves are provided inside the plurality of short drainage pipes.

[0007] Preferably, a connecting rod is fixedly provided above the shell, and a bent rod is fixedly connected above the connecting rod.

[0008] Preferably, a hollow layer is provided in the inner shell, a plurality of reinforcing rods are fixedly connected to the outer side of the inner shell, the other end of the reinforcing rods is fixedly connected to the inner side of the outer shell, the inner side of the connecting ring is fixedly connected to the lower side of the outer side of the inner shell, a fixing ring is fixedly connected to the upper end of the inner shell, and a plurality of drainage holes are provided on the fixing ring.

[0009] Preferably, the inner and outer sides of the outer shell and the outer side of the inner shell are coated with an anti-corrosion coating.

[0010] Preferably, the cooling component includes a water pump fixedly arranged above the shell, the water pump outlet is connected to a drainage elbow, the other end of the drainage elbow passes through a through hole, the drainage elbow is fixedly connected to the shell through the through hole, the shell liquid inlet is connected to a connecting pipe, the other end of the connecting pipe is connected to a plate heat exchanger, the plate heat exchanger is fixedly arranged on the outside of the shell through a mounting plate, a water pump pipe is fixedly connected to the bottom of the plate heat exchanger, two connecting ports are provided above the plate heat exchanger, and the two connecting ports on the plate heat exchanger are respectively a low-temperature cooling water inlet and a high-temperature cooling water outlet.

[0011] Preferably, the exhaust assembly includes a mounting plate fixedly connected to the upper outer side of the shell, an air pump is fixedly provided on the mounting plate, an air inlet of the air pump is fixedly connected to a connecting hose, and the other end of the connecting hose is fixedly connected to the exhaust pipe.

[0012] Preferably, the connecting shell is connected to a water pump via a fixed pipe and a water pipe, a liquid level sensor is provided inside the annular plate, and a sealing valve is provided inside the exhaust pipe.

[0013] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) The base mechanism is provided with an outer shell, an inner shell, a cooling component and an exhaust component. The deionized water stored in the annular plate is used to seal the liquid so that the liquid level always submerges the joint between the inner shell and the base. The liquid forms the first physical barrier. Its fluidity can compensate for the microscopic unevenness of the contact surface, achieving dynamic sealing and effectively blocking the leakage of the protective gas in the furnace and the infiltration of external air. During the insulation stage, the system will close the drain short pipe valve and start the air pump to actively evacuate the gas and water vapor in the cavity between the outer shell and the inner shell to form a low vacuum environment. Vacuum is an excellent thermal insulation layer, which further reduces heat loss. However, its key role here is that it constitutes the second "negative pressure seal". In addition, the liquid level sensor integrated in the annular plate realizes the monitoring of the sealing liquid level, ensuring that the liquid level is always in a safe range, preventing the seal from failing due to too low a liquid level and also avoiding overflow due to too high a liquid level. (2) When the traditional bell-type annealing furnace is running at high temperature, the temperature of the outer wall of the furnace shell is extremely high, and a large amount of heat is lost to the workshop in the form of radiation and convection. This not only causes huge energy waste, but also leads to a poor production environment. Especially in summer, the high temperature in the workshop is unbearable, which seriously affects the health and work efficiency of workers. The present invention introduces deionized water into the cavity between the outer shell and the inner shell. The water pump pumps out the deionized water in the annular plate, and after cooling through the plate heat exchanger, it is pumped to the fixed ring on the top of the inner shell through the drainage elbow. The deionized water then flows evenly along the high-temperature outer wall of the inner shell through the drainage hole. In this process, the deionized water is forced to flow through convection and high-efficiency heat conduction. Actively and in large quantities absorbs the heat dissipated from the inner shell, greatly reducing the overall temperature of the outer shell. After the deionized water that has absorbed the heat flows back to the annular plate, it is not directly discarded, but is immediately sent to the plate heat exchanger for cooling, thus forming a closed, continuous active cooling cycle of heat extraction and transfer. This process effectively collects the waste heat that would otherwise be lost to the environment and discharges it through the heat exchanger, greatly reducing the heat loss from the furnace body to the environment, saving the energy consumption required for heating, reducing production costs, solving the problem of "thermal pollution" in the workshop, and preventing the workshop temperature from being too high due to heat diffusion, affecting the health of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the base structure of the present invention; Figure 3 This is a schematic diagram of the protective mechanism structure of the present invention; Figure 4 This is a schematic diagram of the housing structure of the present invention; Figure 5 This is a schematic diagram of the housing flip structure of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the protection mechanism of the present invention; Figure 7 This is a schematic diagram of the inner shell structure of the present invention; Figure 8 This is a schematic diagram of the cooling component structure of the present invention; Figure 9 It is a schematic diagram of the exhaust assembly structure of the present invention.

[0015] In the figure: 1. base mechanism; 11. base; 12. connecting plate; 13. annular plate; 14. connecting shell; 141. fixing pipe; 2. protective mechanism; 21. outer shell; 211. drainage short pipe; 212. through hole; 213. exhaust pipe; 214. connecting ring; 22. connecting rod; 221. bent rod; 23. inner shell; 231. hollow layer; 232. reinforcing rod; 233. fixing ring; 234. drainage hole; 24. heating component; 25. cooling component; 251. water pump; 252. drainage elbow; 253. plate heat exchanger; 254. suction pipe; 255. connecting pipe; 26. exhaust component; 261. mounting plate; 262. air pump; 263. connecting hose. DETAILED DESCRIPTION

[0016] To make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0017] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words “including” or “comprising” and the like used in this disclosure mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words “connected” or “connected” and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. “Up”, “down”, “left”, “right” and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0018] like Figures 1 to 9As shown, the present invention provides a bell-type annealing furnace with a heat-insulating protective structure, comprising a base mechanism 1 and a protective mechanism 2 arranged above the base mechanism 1. The base mechanism 1 comprises a base 11, a connecting plate 12 is fixedly connected to the lower outer side of the base 11, an annular plate 13 is fixedly connected to the upper side of the connecting plate 12 away from the base 11, a connecting shell 14 is fixedly connected to the outer side of the annular plate 13, a fixing pipe 141 is fixedly connected to the outer side of the connecting shell 14, a connecting hole is opened on the annular plate 13 and is connected to the interior of the connecting shell 14, and the connecting shell 14 is provided with a valve. An inner cover is placed above the base 11, and a sealing gasket is provided on the base 11; The protective mechanism 2 includes an outer shell 21 arranged on the base mechanism 1, an inner shell 23 is arranged inside the outer shell 21, a cavity is formed between the outer shell 21 and the inner shell 23, a heating component 24 for heating the inner cover is arranged inside the inner shell 23, and a cooling component 25 and an exhaust component 26 are arranged on the outside of the outer shell 21.

[0019] A plurality of drainage short pipes 211 are fixedly connected to the lower outer side of the shell 21, a connecting ring 214 is fixedly connected to the lower inner side of the shell 21, a through hole 212 is opened on the top of the shell 21, an exhaust pipe 213 is fixedly connected to one side of the top of the shell 21, and valves are provided inside the plurality of drainage short pipes 211.

[0020] A connecting rod 22 is fixedly provided above the housing 21 , and a bent rod 221 is fixedly connected above the connecting rod 22 .

[0021] A hollow layer 231 is provided inside the inner shell 23, and a plurality of reinforcing rods 232 are fixedly connected to the outside of the inner shell 23. The other end of the reinforcing rod 232 is fixedly connected to the inside of the outer shell 21. The inside of the connecting ring 214 is fixedly connected to the lower outside of the inner shell 23. A fixing ring 233 is fixedly connected to the upper end of the inner shell 23, and a plurality of drainage holes 234 are provided on the fixing ring 233.

[0022] The inner and outer sides of the outer shell 21 and the outer side of the inner shell 23 are coated with an anti-corrosion coating.

[0023] The cooling component 25 includes a water pump 251 fixedly arranged above the shell 21, and the liquid outlet of the water pump 251 is connected to a drainage elbow 252, the other end of the drainage elbow 252 passes through the through hole 212, and the drainage elbow 252 is fixedly connected to the shell 21 through the through hole 212, and the liquid inlet of the shell 21 is connected to a connecting pipe 255, and the other end of the connecting pipe 255 is connected to a plate heat exchanger 253, and the plate heat exchanger 253 is fixedly arranged on the outside of the shell 21 through a mounting plate, and a water pumping pipe 254 is fixedly connected to the bottom of the plate heat exchanger 253. Two connecting ports are provided above the plate heat exchanger 253, and the two connecting ports on the plate heat exchanger 253 are respectively a low-temperature cooling water inlet and a high-temperature cooling water outlet. The plate heat exchanger 253 is connected to the high-temperature cooling water outlet and the cooling equipment through the low-temperature cooling water inlet.

[0024] The exhaust assembly 26 includes a mounting plate 261 fixedly connected to the upper outer side of the shell 21, and an air pump 262 is fixedly provided on the mounting plate 261. The air inlet of the air pump 262 is fixedly connected to a connecting hose 263, and the other end of the connecting hose 263 is fixedly connected to the exhaust pipe 213.

[0025] The connecting shell 14 is connected to the water pipe through a fixed pipe 141 and a liquid replenishing device. A liquid level sensor is provided inside the annular plate 13, and a sealing valve is provided in the exhaust pipe 213. The liquid replenishing device is used to replenish deionized water into the annular plate 13 to reduce scale generation.

[0026] The working principle of the present invention is as follows: the material is placed on the base 11, the inner cover is covered, and then the protective mechanism 2 is covered. The inner shell 23 contacts the sealing gasket on the base 11. At this time, liquid is injected into the connecting shell 14 through the liquid replenishing device. The valve in the connecting shell 14 is opened, and the liquid enters the annular plate 13 through the connecting hole. At this time, the water pump 251 extracts the liquid in the annular plate 13 through the connecting pipe 255 and the water pumping pipe 254, and then injects it into the upper part of the outer shell 21 from the drainage elbow 252. The drainage elbow 252 injects the liquid into the upper part of the inner shell 23, and the liquid falls on the fixed The liquid flows into the ring 233 and then flows from the drainage hole 234 to the bottom of the inner shell 23. After the liquid flows down from the outside of the inner shell 23, it finally flows into the connecting ring 214 and then is discharged into the annular plate 13 from the drainage short pipe 211. Then the heating component 24 heats the inner shell. At this time, the liquid takes away the heat from the outside of the inner shell 23 when it flows down from the outside of the inner shell 23. After the heated liquid enters the annular plate 13, it will be sucked away by the pumping pipe 254 again. After passing through the plate heat exchanger 253, it is cooled by the plate heat exchanger 253 and then continues to be discharged by the drainage elbow 252. The liquid in the annular plate 13 floods the joints between the outer shell 21, the inner shell 23 and the base 11, and forms a seal on the joints between the inner shell 23 and the base 11, thereby preventing the rubber seal from aging, etc., which would cause the protective gas in the furnace to leak and the outside air to penetrate, causing the strip steel in the furnace to be oxidized or even nitrided, resulting in the quality failure of a large number of products. When the liquid flows through the outer side of the inner shell 23, part of it is evaporated, and the air pump 262 passes through the outer shell 23. The connecting hose 263 extracts steam between the outer shell 21 and the inner shell 23. When heating is completed, the valve in the drain short pipe 211 is closed, and the air pump 262 extracts gas between the inner shell 23 and the outer shell 21 through the connecting hose 263, so that a low vacuum state is formed between the inner shell 23 and the outer shell 21, preventing the heat in the furnace from being dissipated outward mainly through the furnace shell when in the heat preservation state. The liquid level sensor in the annular plate 13 monitors the liquid level in the annular plate 13 in real time to prevent the liquid level from falling below the joint between the inner shell 23 and the base 11, or the liquid from overflowing from the annular plate 13.

[0027] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present invention.

Claims

1. A bell-type annealing furnace with a heat-insulating protective structure, comprising a base mechanism (1) and a protective mechanism (2) arranged above the base mechanism (1), characterized in that: The base mechanism (1) comprises a base (11), a connecting plate (12) is fixedly connected to the lower side of the outer side of the base (11), an annular plate (13) is fixedly connected to the upper side of the connecting plate (12) away from the base (11), a connecting shell (14) is fixedly connected to the outer side of the annular plate (13), a fixing pipe (141) is fixedly connected to the outer side of the connecting shell (14), a connecting hole is opened on the annular plate (13) and is connected to the inside of the connecting shell (14), and an inner cover is placed above the base (11); The protective mechanism (2) comprises an outer shell (21) arranged on the base mechanism (1), an inner shell (23) being arranged inside the outer shell (21), a cavity being formed between the outer shell (21) and the inner shell (23), a heating component (24) for heating the inner cover being arranged inside the inner shell (23), and a cooling component (25) and an exhaust component (26) being arranged outside the outer shell (21).

2. The bell-type annealing furnace with a heat-insulating protective structure according to claim 1, characterized in that: A plurality of short drainage pipes (211) are fixedly connected to the lower outer side of the shell (21), a connecting ring (214) is fixedly connected to the lower inner side of the shell (21), a through hole (212) is provided on the upper side of the shell (21), an exhaust pipe (213) is fixedly connected to one side of the upper side of the shell (21), and valves are provided inside the plurality of short drainage pipes (211).

3. The bell-type annealing furnace with a heat-insulating protective structure according to claim 1, characterized in that: A connecting rod (22) is fixedly provided above the housing (21), and a bent rod (221) is fixedly connected above the connecting rod (22).

4. The bell-type annealing furnace with a heat-insulating protective structure according to claim 2, characterized in that: A hollow layer (231) is provided in the inner shell (23), a plurality of reinforcing rods (232) are fixedly connected to the outer side of the inner shell (23), the other end of the reinforcing rod (232) is fixedly connected to the inner side of the outer shell (21), the interior of the connecting ring (214) is fixedly connected to the lower side of the outer side of the inner shell (23), the upper end of the inner shell (23) is fixedly connected to a fixing ring (233), and a plurality of drainage holes (234) are provided on the fixing ring (233).

5. The bell-type annealing furnace with a heat-insulating protective structure according to claim 1, characterized in that: The inner and outer sides of the outer shell (21) and the outer side of the inner shell (23) are coated with an anti-corrosion coating.

6. The bell-type annealing furnace with a heat-insulating protective structure according to claim 2, characterized in that: The cooling component (25) includes a water pump (251) fixedly arranged above the shell (21); the liquid outlet of the water pump (251) is connected to a drain elbow (252); the other end of the drain elbow (252) passes through a through hole (212); the drain elbow (252) is fixedly connected to the shell (21) through the through hole (212); the liquid inlet of the shell (21) is connected to a connecting pipe (255); the other end of the connecting pipe (255) is connected to a plate heat exchanger (253); the plate heat exchanger (253) is fixedly arranged on the outside of the shell (21) through a mounting plate; a water pumping pipe (254) is fixedly connected below the plate heat exchanger (253); two connecting ports are provided above the plate heat exchanger (253); the two connecting ports on the plate heat exchanger (253) are a low-temperature cooling water inlet and a high-temperature cooling water outlet, respectively.

7. The bell-type annealing furnace with a heat-insulating protective structure according to claim 2, characterized in that: The exhaust assembly (26) comprises a mounting plate (261) fixedly connected to the upper outer side of the housing (21); an air pump (262) is fixedly provided on the mounting plate (261); an air inlet of the air pump (262) is fixedly connected to a connecting hose (263); the other end of the connecting hose (263) is fixedly connected to the exhaust pipe (213).

8. The bell-type annealing furnace with a heat-insulating protective structure according to claim 6, characterized in that: The connecting shell (14) is connected to a water pipe via a fixed pipe (141) and a water pump. A liquid level sensor is provided inside the annular plate (13), and a sealing valve is provided inside the exhaust pipe (213).

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