A bell-type annealing furnace having a water circulation system

Abstract

The application relates to the technical field of annealing furnaces, in particular to a cover type annealing furnace with a water circulation system, which comprises a base, a furnace table arranged on the base, a furnace plate arranged on the furnace table, a placing ring fixedly connected to the bottom of the furnace table, an inner cover and an outer cover sequentially sleeved on the base, a spraying seat arranged at the top of the inner cover, water spraying holes arranged on the spraying seat, a plurality of water spraying holes being arranged at intervals, a fixed pipe connected to the spraying seat, the fixed pipe being bent into an L shape and one section of the fixed pipe being attached to the side wall of the inner cover, a spraying hose connected to one end of the fixed pipe, a water collecting tank arranged on one side of the base, a water pump mounted in the water collecting tank, a water outlet end of the water pump being connected to the spraying hose, a fixing ring fixedly connected to the bottom of the inner cover, the fixing ring abutting against the placing ring, a water baffle fixedly connected to the fixing ring, and a water collecting pipe fixedly connected to the water baffle, so that the water consumption of the annealing furnace during cooling is reduced.

Description

Technical Field

[0001] This application relates to the field of annealing furnace technology, and in particular to a bell-type annealing furnace with a water circulation system. Background Technology

[0002] Annealing is a common heat treatment process for metallic materials, mainly used to eliminate internal stress, refine grains, or improve processing performance. An annealing furnace is a piece of equipment used in the annealing process. In the annealing furnace, the material needs to undergo specific heating, holding, and cooling processes to achieve the defined process requirements.

[0003] The cooling process of an annealing furnace typically employs either air cooling or water cooling. Water cooling involves externally spraying water to lower the internal temperature of the furnace. Compared to air cooling, water cooling achieves a faster cooling rate and reaches the target temperature more quickly.

[0004] The existing technical solutions mentioned above have the following drawbacks: when the annealing furnace is cooled by spraying water, the water consumption is huge, which can easily lead to water waste. Utility Model Content

[0005] In order to reduce the amount of water consumed during the cooling process of the annealing furnace, this application provides a bell-type annealing furnace with a water circulation system.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: A bell-type annealing furnace with a water circulation system includes a base, a furnace platform on the base, a furnace plate on the furnace platform, a placement ring fixed to the bottom of the furnace platform, an inner cover and an outer cover sequentially fitted on the base, a spray seat on the top of the inner cover, multiple spray holes spaced apart on the spray seat, a fixed pipe connected to the spray seat, the fixed pipe being bent into an L-shape with one end fitting against the side wall of the inner cover, a spray hose connected to one end of the fixed pipe, a water collection tank on one side of the base, a water pump installed in the water collection tank, the outlet end of the water pump connected to the spray hose, a fixed ring fixed to the bottom of the inner cover, the fixed ring abutting against the placement ring, a baffle plate fixed to the fixed ring, the baffle plate being annularly arranged, a water collection pipe fixed to the baffle plate, one end of the water collection pipe being located above the water collection tank.

[0007] By adopting the above technical solution, when cooling the inside of the annealing furnace, the outer cover is removed using a hoist, and the spray seat is placed on top of the inner cover. This allows cold water in the water collection tank to flow out from the top of the inner cover and down the outer wall of the inner cover until it flows down the outer wall of the inner cover into the annular groove formed by the baffle plate and the peripheral wall of the inner cover. Finally, it flows into the water collection tank from the water collection pipe for cooling. The water flowing down the outer wall of the inner cover from the top increases the contact area between the water and the outer wall of the inner cover. The water in the water collection tank circulates over the outer wall of the inner cover, which can reduce the temperature of the inner cover, thereby reducing the temperature inside the annealing furnace. The water flowing down the outer wall of the inner cover is blocked by the baffle plate and flows into the water collection tank through the water collection pipe for cooling, which can reduce the amount of water consumed during the cooling of the annealing furnace.

[0008] Optionally, the peripheral wall of the inner cover is processed to form a corrugated shape.

[0009] By adopting the above technical solution, the outer wall of the inner cover is processed into a corrugated shape, which can increase the contact area between the water flowing out of the spray seat and the outer wall of the inner cover, improve the heat exchange efficiency between the water and the inner cover, ensure that the flowing water can cover the outer wall of the inner cover, and ensure the cooling effect of the circulating water on the inner cover.

[0010] Optionally, the water collection tank is rectangular, the outlet end of the water pump is connected to an outlet pipe, an outlet valve is installed on the outlet pipe, multiple outlet valves are spaced apart, and one end of the outlet valve is connected to the spray hose.

[0011] By adopting the above technical solution, the rectangular water collection tank can increase the volume of the water collection tank and increase the contact area between the water and the air, thereby improving the cooling effect of the water in the water collection tank. When multiple annealing furnaces are set up, the annealing furnaces are arranged on both sides of the water collection tank along the length of the water collection tank. Multiple water outlet valves on the water outlet pipe can be connected to multiple spray hoses, so that multiple spray hoses connected with spray seats and fixed pipes can cool multiple annealing furnaces respectively. This allows the water circulation system to cool the inner shell of multiple annealing furnaces at the same time, improving working efficiency and reducing the amount of water consumed when cooling multiple annealing furnaces.

[0012] Optionally, a sealing strip is fixed to the placement ring.

[0013] By adopting the above technical solutions, the sealing strip can improve the sealing performance at the connection between the inner cover and the furnace platform, ensure the stability of the annealing furnace's material processing effect, ensure the uniform temperature reduction inside the furnace during cooling, and ensure the safety and stability of the annealing furnace operation.

[0014] Optionally, a cooling pipe is fixed to the fixing ring. The cooling pipe is arranged in a ring along one side of the baffle plate. The two ends of the cooling pipe are close to each other and connected to a cooling hose. One cooling hose is connected to one end of the water outlet valve, and the other cooling hose is located above the water collection tank.

[0015] By adopting the above technical solution, the cooling pipe can reduce the temperature at the connection between the fixing ring and the sealing strip through water circulation inside the pipe. It can also reduce the temperature of the sealing strip when heating or heat preservation in the annealing furnace, ensuring the stability of the sealing effect of the sealing strip and reducing the risk of damage to the sealing strip due to high temperature.

[0016] Optionally, the bottom of the spray seat is machined with anti-slip ridges.

[0017] By adopting the above technical solution, the anti-slip ridges can increase the friction between the spray seat and the inner cover, ensuring the stability and safety of the spray seat operation.

[0018] Optionally, the top of the inner cover is machined to form an outwardly protruding spherical surface.

[0019] By adopting the above technical solution, the contact area between the water flowing out of the spray seat and the outer wall of the inner cover can be increased, the heat exchange efficiency between the water and the inner cover can be improved, the flowing water can cover the outer wall of the inner cover, and the cooling effect of the circulating water on the inner cover can be guaranteed.

[0020] Optionally, the bottom of the spray seat is machined to form a spherical surface that fits the top of the inner cover.

[0021] By adopting the above technical solution, the bottom of the spray seat is processed to form an arc surface that fits the inner cover, which makes it easier for workers to place the spray seat on the inner cover and improves the stability of the spray seat when placed on the inner cover.

[0022] In summary, this application has the following technical effects: 1. By setting up an inner cover, baffle plate, water collection tank, water pump and spray seat, water flows down from the top of the inner cover along the outer wall of the inner cover, which can increase the contact area between the water and the outer wall of the inner cover. The water in the water collection tank circulates through the outer wall of the inner cover, which can reduce the temperature of the inner cover, thereby reducing the temperature inside the annealing furnace. The water flowing down along the outer wall of the inner cover is blocked by the baffle plate and flows into the water collection tank through the water collection pipe for cooling, which can reduce the amount of water consumed when the annealing furnace is cooled. 2. By installing a cooling pipe, the temperature at the connection between the fixing ring and the sealing strip can be reduced through water circulation inside the pipe. This can reduce the temperature of the sealing strip when heating or holding it in the annealing furnace, ensuring the stability of the sealing effect of the sealing strip and reducing the risk of damage to the sealing strip due to high temperature. 3. By setting anti-slip ridges, the friction between the spray seat and the inner cover can be increased, ensuring the stability and safety of the spray seat during operation. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the object of this application; Figure 2 This is a cross-sectional structural diagram of this application; Figure 3 yes Figure 2Enlarged view of point A in the middle.

[0024] Explanation of reference numerals in the attached drawings: 1. Base; 2. Furnace platform; 21. Placement ring; 22. Sealing strip; 3. Inner cover; 31. Fixing ring; 32. Water baffle; 33. Cooling pipe; 34. Water collection pipe; 4. Water collection trough; 41. Water pump; 42. Water outlet pipe; 43. Water outlet valve; 5. Sprayer seat; 51. Fixing pipe; 52. Spray hose. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings.

[0026] This application discloses a bell-type annealing furnace with a water circulation system, as shown in the embodiments below. Figure 1 and Figure 2 The bell-type annealing furnace includes a base 1, a furnace platform 2 on top of the base 1, a furnace plate on top of the furnace platform 2, an inner cover 3 on the base 1, the top surface of the inner cover 3 is machined into an outwardly protruding spherical surface, the peripheral wall of the inner cover 3 is machined into a corrugated shape along the height direction of the inner cover 3, a fixing ring 31 is integrally formed at the bottom of the inner cover 3, and an outer cover with a heating function is fitted on the outer wall of the inner cover 3. The outer cover heats or keeps the interior of the annealing furnace warm. The outer cover is removed when the annealing furnace cools down. The outer cover is not shown in the figure in this embodiment. A water collection tank 4 is provided on one side of the base 1. The water collection tank 4 is cuboid. A water pump 41 is installed in the water collection tank 4. The water inlet of the water pump 41 is located at the bottom of the water collection tank 4. The water outlet of the water pump 41 is connected to a water outlet pipe 42. The water outlet pipe 42 is fixed to the top of the water collection tank 4 by bolts. The end of the water outlet pipe 42 away from the water pump 41 is closed. Multiple water outlet valves 43 are installed on the water outlet pipe 42.

[0027] Reference Figure 1 and Figure 2 The inner cover 3 is provided with a spray seat 5 at the top. The spray seat 5 is annular and has spray holes on its side wall. Multiple spray holes are spaced apart. The side of the spray seat 5 facing the inner cover 3 is machined with an anti-slip ridge. The anti-slip ridge protrudes from the outer wall of the spray seat 5. The anti-slip ridge in this embodiment is not shown in the figure. The side of the spray seat 5 facing the inner cover 3 is machined to form an arc surface that fits the top of the inner cover 3. A fixing pipe 51 is connected to one side of the spray seat 5. The fixing pipe 51 is bent into an L shape and one part fits the side wall of the inner cover 3. The end of the fixing pipe 51 away from the spray seat 5 is connected to a spray hose 52. One end of the spray hose 52 is connected to one end of a water outlet valve 43 on the water outlet pipe 42.

[0028] Reference Figure 2 and Figure 3 The bottom perimeter wall of the furnace platform 2 is integrally formed with a placement ring 21. The top surface of the placement ring 21 is provided with a ring groove on the side near the furnace platform 2. One side of the ring groove is connected to the side wall of the furnace platform 2. A sealing strip 22 is bonded to the side wall away from the furnace platform 2. In this embodiment, the sealing strip 22 is a sealing strip made of silicone material.

[0029] Reference Figure 1 and Figure 2 The bottom of the inner cover 3 is integrally formed with a fixing ring 31. The fixing ring 31 is sleeved on the furnace platform 2 and abuts against the top surface of the placement ring 21. The peripheral wall of the fixing ring 31 is welded with connecting blocks. Multiple connecting blocks are spaced apart. Bolts are passed through the connecting blocks. The placement ring 21 has connecting holes for bolt thread connection. Multiple connecting holes are spaced apart and correspond one-to-one with multiple connecting blocks. The fixing ring 31 is welded with a positioning plate. Two positioning plates are spaced apart. The end of the positioning plate away from the fixing ring 31 has a fixing hole for the positioning rod to pass through.

[0030] Reference Figure 1 and Figure 2 A baffle plate 32 is integrally formed on the side of the top surface of the fixing ring 31 away from the inner cover 3. The baffle plate 32 is arranged in a ring and forms an annular groove with the outer wall of the inner cover 3. A water collection pipe 34 is welded to the side of the baffle plate 32 near the water collection tank 4. One end of the water collection pipe 34 is connected to the side of the baffle plate 32 facing the inner cover 3, and the other end of the water collection pipe 34 is located above the water collection tank 4. A cooling pipe 33 is welded to the side of the baffle plate 32 facing the inner cover 3. The cooling pipe 33 is arranged in a ring on the fixing ring 31 with its two ends close to each other. The cooling pipe 33 is located above the sealing strip 22. Both ends of the cooling pipe 33 are bent away from the inner cover 3 and pass through the baffle plate 32. Both ends of the cooling pipe 33 are connected to cooling hoses. One cooling hose is connected to one end of a water outlet valve 43 on the water outlet pipe 42, and the other cooling hose is located in the water collection tank 4 at the end away from the cooling pipe 33.

[0031] When using this hood-type annealing furnace, place the material on the furnace plate, and use a hoist to install and fix the inner cover 3 and outer cover in sequence. The outer cover heats or keeps the furnace interior warm. When cooling is required, use the hoist to remove the outer cover, place the spray seat 5 on top of the inner cover 3, and at this time, the fixing pipe 51 is attached to the outer wall of the inner cover 3. Start the water pump 41, open the water outlet valve 43 connected to the spray seat 5, so that the cold water in the water collection tank 4 flows out from the top of the inner cover 3 and flows down the outer wall of the inner cover 3 until it flows down the outer wall of the inner cover 3 into the annular groove formed by the baffle plate 32 and the peripheral wall of the inner cover 3, and finally flows out from the water collection pipe 34. The water flows into the water collection tank 4 for cooling. The rectangular water collection tank 4 can improve the cooling effect of the water in the water collection tank 4, which is conducive to cooling the inner cover 3 through water circulation. The water in the water collection tank 4 is transported to the spray seat 5 by the water pump 41. The water flows down from the top of the inner cover 3 along the outer wall of the inner cover 3, which can increase the contact area between the water and the outer wall of the inner cover 3. The water in the water collection tank 4 circulates through the outer wall of the inner cover 3, which can reduce the temperature of the inner cover 3, thereby reducing the temperature inside the annealing furnace. The water flowing down along the outer wall of the inner cover 3 is blocked by the baffle and flows into the water collection tank 4 through the water collection pipe 34 for cooling, which can reduce the amount of water consumed when the annealing furnace is cooled.

[0032] The top of the inner cover 3 is spherical and the outer wall is corrugated, which can increase the contact area between the water flowing out of the spray seat 5 and the outer wall of the inner cover 3, improve the heat exchange efficiency between the water and the inner cover 3, ensure that the flowing water can cover the outer wall of the inner cover 3, and ensure the cooling effect of the circulating water on the inner cover 3.

[0033] The sealing strip 22 can improve the sealing performance at the connection between the inner cover 3 and the furnace platform 2, ensure the stability of the annealing furnace's material processing effect, ensure that the furnace temperature drops evenly during cooling, and ensure the safety and stability of the annealing furnace operation.

[0034] The cooling pipe 33 can reduce the temperature at the connection between the fixing ring 31 and the sealing strip 22 by circulating water inside the pipe. It can also reduce the temperature of the sealing strip 22 when heating or heat preservation in the annealing furnace, ensuring the stability of the sealing effect of the sealing strip 22 and reducing the risk of damage to the sealing strip 22 due to high temperature.

[0035] The rectangular water collection tank 4 can increase the volume of the water collection tank 4 and increase the contact area between the water inside and the air, thereby improving the cooling effect of the water inside the water collection tank 4. When multiple annealing furnaces are set up, the annealing furnaces are arranged on both sides of the water collection tank 4 along the length of the water collection tank 4. Multiple water outlet valves 43 on the water outlet pipe 42 can be connected to multiple spray hoses 52, so that multiple spray hoses 52 connected to spray seats 5 and fixed pipes 51 can cool multiple annealing furnaces respectively. This allows the water circulation system to cool the inner cover 3 of multiple annealing furnaces at the same time, improving working efficiency and reducing the amount of water consumed when cooling multiple annealing furnaces.

[0036] The protruding anti-slip ridges on the spray seat 5 increase the friction between the spray seat 5 and the inner cover 3, ensuring the stability and safety of the spray seat 5 during operation. The bottom of the spray seat 5 is machined to form an arc surface that fits the inner cover 3, making it easier for workers to place the spray seat 5 on the inner cover 3 and improving the stability of the spray seat 5 on the inner cover 3.

[0037] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A bell-type annealing furnace with a water circulation system, characterized in that, The bell-type annealing furnace includes a base (1), a furnace platform (2) on the base (1), a furnace plate on the furnace platform (2), and a placement ring (21) fixed to the bottom of the furnace platform (2). An inner cover (3) and an outer cover are sequentially fitted on the base (1). A spray seat (5) is provided on the top of the inner cover (3). The spray seat (5) has multiple water spray holes spaced apart. A fixing pipe (51) is connected to the spray seat (5). The fixing pipe (51) is bent into an L-shape and one end fits against the side wall of the inner cover (3). One end of the fixing pipe (51) is connected to a... A water collection tank (4) is provided on one side of the base (1) of the spray hose (52). A water pump (41) is installed in the water collection tank (4). The water outlet of the water pump (41) is connected to the spray hose (52). A fixing ring (31) is fixedly connected to the bottom of the inner cover (3). The fixing ring (31) abuts against the placement ring (21). A baffle plate (32) is fixedly connected to the fixing ring (31). The baffle plate (32) is arranged in a ring shape. A water collection pipe (34) is fixedly connected to the baffle plate (32). One end of the water collection pipe (34) is located above the water collection tank (4).

2. The bell-type annealing furnace with a water circulation system according to claim 1, characterized in that: The peripheral wall of the inner cover (3) is processed to form a corrugated shape.

3. A bell-type annealing furnace with a water circulation system according to claim 2, characterized in that: The water collection tank (4) is rectangular. The outlet end of the water pump (41) is connected to the outlet pipe (42). The outlet pipe (42) is equipped with an outlet valve (43). Multiple outlet valves (43) are spaced apart. One end of the outlet valve (43) is connected to the spray hose (52).

4. A bell-type annealing furnace with a water circulation system according to claim 3, characterized in that: A sealing strip (22) is fixedly attached to the placement ring (21).

5. A bell-type annealing furnace with a water circulation system according to claim 4, characterized in that: A cooling pipe (33) is fixedly connected to the fixed ring (31). The cooling pipe (33) is arranged in a ring along one side of the baffle plate (32). The two ends of the cooling pipe (33) are close to each other and connected to a cooling hose. One cooling hose is connected to one end of the outlet valve (43), and the other cooling hose is located above the water collection tank (4).

6. A bell-type annealing furnace with a water circulation system according to claim 1, characterized in that: The bottom of the spray seat (5) is machined with anti-slip ridges.

7. A bell-type annealing furnace with a water circulation system according to claim 6, characterized in that: The top of the inner cover (3) is machined to form an outwardly protruding spherical surface.

8. A bell-type annealing furnace with a water circulation system according to claim 7, characterized in that: The bottom of the spray seat (5) is machined to form a spherical surface that fits the top of the inner cover (3).

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