Rapid cooling device for vertical vacuum furnace

Abstract

The utility model relates to the technical field of mold production, in particular to a rapid cooling device for a vertical vacuum furnace, which comprises a vacuum furnace main body, an upper cover is hinged to the top of the vacuum furnace main body, a cooling mechanism is arranged on the vacuum furnace main body, and a heat exchange mechanism is arranged between the vacuum furnace main body and the cooling mechanism. The heat exchange mechanism comprises an air outlet pipe fixedly connected to one side of the bottom of the vacuum furnace body, one end, away from the vacuum furnace body, of the air outlet pipe is fixedly connected with a spiral heat exchange pipe, and the spiral heat exchange pipe is sleeved with a heat exchange water storage tank. The side edge cooling assembly is used for forming annular airflow, cooled inert gas is prevented from being directly blown to the mold, after precooling is finished, side face blowing cooling and top blowing cooling are conducted at the same time, the cooling efficiency is high, meanwhile, the heat exchange mechanism is used for conducting heat exchange on the heated inert gas, and heat recycling is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of mold manufacturing technology, specifically relating to a rapid cooling device for a vertical vacuum furnace. Background Technology

[0002] A vertical vacuum furnace is an industrial equipment mainly used for the heat treatment of materials. Vertical vacuum furnaces are used in a variety of industries, especially in the mold production field, where vertical vacuum furnaces are also required. After heating the mold, the heated mold needs to be cooled, which requires the use of a rapid cooling device.

[0003] The existing method generally uses high-speed outflowing inert gas, such as argon or helium, to directly and rapidly cool the mold. However, this cooling method can easily cause the mold to cool too quickly, resulting in a large temperature difference between the inside and outside of the mold. This can easily cause thermal stress concentration in the mold, leading to mold deformation or cracks. Furthermore, after the inert gas absorbs the heat from the mold and is discharged from the vacuum furnace, the heat absorbed by the gas is not recovered and reused, resulting in energy waste. Utility Model Content

[0004] The purpose of this invention is to provide a simple and reasonably designed rapid cooling device for a vertical vacuum furnace in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A rapid cooling device for a vertical vacuum furnace includes a vacuum furnace body, a top cover hinged to the top of the vacuum furnace body, a cooling mechanism on the vacuum furnace body, and a heat exchange mechanism shared between the vacuum furnace body and the cooling mechanism.

[0007] The heat exchange mechanism includes an exhaust pipe fixedly connected to one side of the bottom of the vacuum furnace body. A spiral heat exchange tube is fixedly connected to the end of the exhaust pipe away from the vacuum furnace body. A heat exchange water tank is sleeved on the outside of the spiral heat exchange tube. The heat exchange water tank stores heat exchange cooling water. A return pipe is fixedly connected to the end of the spiral heat exchange tube away from the exhaust pipe. An inlet pipe and an outlet pipe are provided on the rear side of the heat exchange water tank.

[0008] Preferably, a fixing ring is fixedly sleeved at the bottom of the vacuum furnace body, and several supporting legs are evenly fixedly connected to the bottom of the fixing ring in a circumferential direction.

[0009] Preferably, the cooling mechanism includes a top cooling component, a side cooling component, a second diversion pipe, a gas storage tank, and a gas pump. The side cooling component is located below the top cooling component. The gas storage tank contains inert gas, and a gas pump is fixedly connected to the top surface inside the gas storage tank. The output end of the gas pump is fixedly connected to the second diversion pipe. The top cooling component and the side cooling component are respectively located on the right side of the second diversion pipe. The return pipe is fixedly connected to the gas storage tank.

[0010] Preferably, the top cooling assembly includes a valve fixedly connected to the top right side of the second diversion pipe. A connecting hose is fixedly connected to the right end of the valve. The end of the connecting hose away from the valve passes through the center of the top of the cover and is fixedly connected to a diversion plate. The diversion plate is fixedly connected to the top surface inside the cover, and several top nozzles are evenly installed at the bottom of the diversion plate.

[0011] Preferably, the side cooling assembly includes a second valve fixedly connected to the bottom right side of the second diversion pipe, a gas supply pipe fixedly connected to the right end of the second valve, an annular connecting pipe fixedly connected to the right end of the gas supply pipe, and the annular connecting pipe being sleeved and fixed in the middle of the outer part of the vacuum furnace body.

[0012] Preferably, a plurality of No. 1 diversion pipes are uniformly fixedly installed on the annular connecting pipe, and a plurality of side nozzles are uniformly installed on the No. 1 diversion pipes. The output ends of the side nozzles are fixedly installed through the outer wall of the vacuum furnace body, and a plurality of baffles for blocking and forming a spiral airflow are uniformly installed circumferentially on the inner wall of the vacuum furnace body.

[0013] The beneficial effects of this utility model are as follows: When cooling the mold inside the vacuum furnace body, this utility model adopts a two-stage cooling method of preliminary pre-cooling and rapid cooling. During pre-cooling, the side cooling components form an annular airflow to avoid the inert gas being blown directly onto the mold, thus avoiding the thermal stress concentration caused by the temperature difference between the inside and outside of the mold. After pre-cooling, side air blowing cooling and top air blowing cooling are carried out simultaneously, resulting in high cooling efficiency. At the same time, the inert gas that has absorbed heat enters the heat exchange mechanism for heat exchange cooling, heating the hot water in the heat exchange storage tank, realizing the recovery and utilization of heat. Furthermore, the cooled inert gas flows back to the gas storage tank, realizing the recycling of inert gas. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0015] Figure 2 This is a partial sectional top view of the overall structure of this utility model;

[0016] Figure 3 This is a partial sectional bottom view of the overall structure of this utility model;

[0017] Figure 4This is a perspective view of the baffle of this utility model.

[0018] In the diagram: 1. Vacuum furnace body; 2. Top cover; 3. Cooling mechanism; 31. Top cooling assembly; 311. No. 1 valve; 312. Connecting hose; 313. Top nozzle; 314. Diverter plate; 32. Side cooling assembly; 321. No. 2 valve; 322. Gas supply pipe; 323. No. 1 diverter pipe; 324. Annular connecting pipe; 325. Baffle plate; 326. Side nozzle; 33. No. 2 diverter pipe; 34. Gas storage tank; 35. Gas pump; 4. Heat exchange mechanism; 41. Heat exchange water tank; 42. Spiral heat exchange tube; 43. Return pipe; 44. Gas outlet pipe; 5. Support leg; 6. Fixing ring. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example

[0021] Please see Figure 1 A rapid cooling device for a vertical vacuum furnace includes a vacuum furnace body 1, a top cover 2 hinged to the top of the vacuum furnace body 1, a cooling mechanism 3 provided on the vacuum furnace body 1, and a heat exchange mechanism 4 provided between the vacuum furnace body 1 and the cooling mechanism 3; a fixing ring 6 is fixedly sleeved at the bottom of the vacuum furnace body 1, and several support legs 5 are uniformly fixedly connected to the bottom of the fixing ring 6.

[0022] The cooling mechanism 3 achieves primary pre-cooling and secondary rapid cooling of the mold inside the vacuum furnace body 1, with high cooling efficiency and avoids the situation of different temperatures inside and outside the mold caused by direct rapid cooling. The heat exchange mechanism 4 is used to recover and utilize heat, and the support leg 5 and the fixing ring 6 are used to support and fix the vacuum furnace body 1.

[0023] Please see Figure 1 and Figure 2The cooling mechanism 3 includes a top cooling component 31, a side cooling component 32, a second diversion pipe 33, a gas storage tank 34, and an air pump 35. The side cooling component 32 is located below the top cooling component 31. The gas storage tank 34 stores inert gas, and the air pump 35 is fixedly connected to the top surface inside the gas storage tank 34. The output end of the air pump 35 is fixedly connected to the second diversion pipe 33. The top cooling component 31 and the side cooling component 32 are respectively arranged on the right side of the second diversion pipe 33. The return pipe 43 is fixedly connected to the gas storage tank 34. The top cooling component 31 includes a first valve 311 fixedly connected to the top right side of the second diversion pipe 33. A connecting hose 312 is fixedly connected to the right end of the first valve 311. The end of the connecting hose 312 away from the first valve 311 is fixedly connected to a diversion plate 314 after passing through the center of the top of the top cover 2. The diversion plate 314 is fixedly connected to the top surface inside the top cover 2, and several top nozzles 313 are evenly installed at the bottom of the diversion plate 314.

[0024] Please see Figure 2 , Figure 3 and Figure 4 The side cooling assembly 32 includes a second valve 321 fixedly connected to the bottom right side of the second diversion pipe 33. A gas supply pipe 322 is fixedly connected to the right end of the second valve 321. An annular connecting pipe 324 is fixedly connected to the right end of the gas supply pipe 322. The annular connecting pipe 324 is sleeved and fixed in the middle of the outer side of the vacuum furnace body 1. Several first diversion pipes 323 are evenly fixedly installed on the annular connecting pipe 324. Several side nozzles 326 are evenly installed on the first diversion pipes 323. The output end of the side nozzles 326 is fixedly penetrated through the outer wall of the vacuum furnace body 1. Several baffles 325 for blocking and forming a spiral airflow are evenly installed circumferentially on the inner wall of the vacuum furnace body 1.

[0025] When the mold heating is complete and cooling is required, first open valve 321 and close valve 311. Then, start the air pump 35. The air pump 35 delivers the inert gas stored in the gas tank 34 to the second distribution pipe 33. The inert gas includes argon or helium. The inert gas then enters the gas supply pipe 322 through valve 321, and is subsequently distributed to the first distribution pipe 323 through the annular connecting pipe 324. Finally, it is ejected through the side nozzle 326. During the ejection process, the baffle plate 325 obstructs the gas, forming a spiral... The swirling airflow accelerates the flow rate of the airflow and avoids the phenomenon of thermal stress concentration caused by the airflow directly spraying onto the mold surface, thus achieving pre-cooling of the mold. After pre-cooling, valves 311 and 321 are opened simultaneously. While the gas is ejected from the side nozzle 326, it enters the manifold 314 through valve 311 and connecting hose 312, and then is ejected from the top nozzle 313, directly spraying onto the surface of the mold. Combined with the swirling airflow ejected from the side nozzle 326, the mold is rapidly cooled.

[0026] Please see Figure 1 , Figure 2 and Figure 3 The heat exchange mechanism 4 includes an outlet pipe 44 fixedly connected to one side of the bottom of the vacuum furnace body 1. A spiral heat exchange tube 42 is fixedly connected to the end of the outlet pipe 44 away from the vacuum furnace body 1. A heat exchange water tank 41 is sleeved on the outside of the spiral heat exchange tube 42. The heat exchange water tank 41 stores heat exchange cooling water. A return pipe 43 is fixedly connected to the end of the spiral heat exchange tube 42 away from the outlet pipe 44. An inlet pipe and an outlet pipe (not shown in the figure) are provided on the rear side of the heat exchange water tank 41.

[0027] During operation, the inert gas in the heat exchange mechanism 4 absorbs heat from the mold after rapidly cooling it. The heat-absorbing gas then enters the spiral heat exchange tube 42 through the outlet pipe 44. Inside the spiral heat exchange tube 42, it exchanges heat with the cooling water in the heat exchange water tank 41. After cooling, the inert gas returns to the gas storage tank 34 through the return pipe 43, thus realizing the recycling of the inert gas. At the same time, the cooling water is heated after absorbing heat. The hot water is then delivered to the location where hot water is needed through the outlet pipe on the heat exchange water tank 41, and the inlet pipe enables the input of cooling water, thus realizing the recovery and utilization of heat and reducing resource waste.

[0028] It should be noted that, in the use of this vertical vacuum furnace rapid cooling device, the top cover 2 is first opened, and the mold to be heated is hoisted into the vacuum furnace body 1. The vacuum furnace body 1 is used to perform vacuum heating treatment on the mold. After completion, valve 321 is opened and valve 311 is closed. Inert gas is delivered to the side nozzle 326 by the air pump 35 and sprayed out to form a spiral airflow, which achieves pre-cooling of the mold. After pre-cooling, valves 311 and 321 are opened simultaneously, and high-speed inert gas is sprayed out from the top nozzle 313 and the side nozzle 326 at the same time, which achieves rapid cooling of the mold. The inert gas that has absorbed heat after cooling is heat exchanged through the heat exchange mechanism 4, which realizes the recovery and utilization of heat. After the treatment is completed, the top cover 2 is opened again and the mold is hoisted out.

[0029] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A rapid cooling device for a vertical vacuum furnace, comprising a vacuum furnace body (1), characterized in that: The vacuum furnace body (1) is hinged to the top of the cover (2), and a cooling mechanism (3) is provided on the vacuum furnace body (1), and a heat exchange mechanism (4) is provided between the vacuum furnace body (1) and the cooling mechanism (3); The heat exchange mechanism (4) includes an outlet pipe (44) fixedly connected to one side of the bottom of the vacuum furnace body (1). A spiral heat exchange tube (42) is fixedly connected to one end of the outlet pipe (44) away from the vacuum furnace body (1). A heat exchange water tank (41) is sleeved on the outside of the spiral heat exchange tube (42). The heat exchange water tank (41) stores heat exchange cooling water inside. A return pipe (43) is fixedly connected to one end of the spiral heat exchange tube (42) away from the outlet pipe (44). An inlet pipe and an outlet pipe are provided on the rear side of the heat exchange water tank (41).

2. The rapid cooling device for a vertical vacuum furnace according to claim 1, characterized in that: The bottom of the vacuum furnace body (1) is fixedly fitted with a fixing ring (6), and several supporting legs (5) are evenly fixedly connected to the bottom of the fixing ring (6) in a circumferential direction.

3. The rapid cooling device for a vertical vacuum furnace according to claim 1, characterized in that: The cooling mechanism (3) includes a top cooling component (31), a side cooling component (32), a second diversion pipe (33), a gas storage tank (34), and an air pump (35). The side cooling component (32) is located below the top cooling component (31). The gas storage tank (34) stores inert gas, and the air pump (35) is fixedly connected to the top surface inside the gas storage tank (34). The output end of the air pump (35) is fixedly connected to the second diversion pipe (33). The top cooling component (31) and the side cooling component (32) are respectively located on the right side of the second diversion pipe (33). The return pipe (43) is fixedly connected to the gas storage tank (34).

4. The rapid cooling device for a vertical vacuum furnace according to claim 3, characterized in that: The top cooling assembly (31) includes a first valve (311) fixedly connected to the top right side of the second diversion pipe (33). A connecting hose (312) is fixedly connected to the right end of the first valve (311). The end of the connecting hose (312) away from the first valve (311) is fixedly connected through the center of the top of the top cover (2) and then fixedly connected to a diversion plate (314). The diversion plate (314) is fixedly connected to the top surface inside the top cover (2), and several top nozzles (313) are evenly installed at the bottom of the diversion plate (314).

5. A rapid cooling device for a vertical vacuum furnace according to claim 3, characterized in that: The side cooling assembly (32) includes a second valve (321) fixedly connected to the bottom right side of the second diversion pipe (33). A gas supply pipe (322) is fixedly connected to the right end of the second valve (321). An annular connecting pipe (324) is fixedly connected to the right end of the gas supply pipe (322). The annular connecting pipe (324) is sleeved and fixed to the middle of the outside of the vacuum furnace body (1).

6. A rapid cooling device for a vertical vacuum furnace according to claim 5, characterized in that: A number of first-order diversion pipes (323) are uniformly fixedly installed on the annular connecting pipe (324). A number of side nozzles (326) are uniformly installed on the first-order diversion pipe (323). The output end of the side nozzles (326) is fixedly inserted through the outer wall of the vacuum furnace body (1). A number of baffles (325) for blocking and forming spiral airflow are uniformly installed on the inner wall of the vacuum furnace body (1) in a circumferential direction.

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