Interlayer vacuum furnace

Abstract

The utility model belongs to the technical field of metal processing, and particularly relates to an interlayer vacuum furnace which comprises a furnace body. An inner furnace pipe is fixedly connected to the interior of the furnace body; a gap is formed between the middle part of the inner furnace pipe and the shell of the furnace body; the top of the furnace body is fixedly connected with a liquid inlet pipe; the bottom of the furnace body is fixedly connected with a liquid discharge pipe; the top of the furnace body is fixedly connected with an exhaust pipe; an annular plate is fixedly connected to the interior of the exhaust pipe; the middle of the annular plate is slidably connected with a sliding rod. The top end of the sliding rod is fixedly connected with a spring; the other end of the spring is fixedly connected with the top of the annular plate; the bottom end of the sliding rod is fixedly connected with a rubber plug; by means of the structure, when cooling liquid is added into the interlayer to cool the inner furnace pipe and the interior of the furnace, air residues in the interlayer can be reduced, evaporated gas can be exhausted in time, the situation that the heat exchange effect is reduced due to existence of the gas is reduced, and therefore the cooling effect on the vacuum furnace is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal processing, in particular to a sandwich vacuum furnace. Background Art

[0002] A vacuum furnace is a heating device that uses a vacuum system to discharge some of the material in the furnace, making the pressure in the furnace less than one standard atmospheric pressure, thereby achieving a vacuum state.

[0003] The sandwich vacuum furnace is a special vacuum furnace. Its design feature lies in the sandwich design between the furnace shell and the inner furnace. This design is usually used to improve the thermal insulation performance of the furnace body, reduce heat loss, and may enhance the structural strength of the furnace body. After some sandwich vacuum furnaces are used, cooling liquid will be injected into the sandwich. The cooling liquid exchanges heat with the inner furnace shell to quickly cool the inner furnace shell. However, when the existing sandwich vacuum furnace is injected into the sandwich, the gas in the sandwich cannot be completely discharged, which reduces the contact area between the cooling liquid and the inner furnace shell, affecting the heat exchange and cooling effect.

[0004] To this end, the utility model provides a sandwich vacuum furnace. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes a sandwich vacuum furnace, comprising a furnace body; an inner furnace core is fixedly connected to the interior of the furnace body; there is a gap between the middle of the inner furnace core and the shell of the furnace body; the top of the furnace body is fixedly connected to a liquid inlet pipe; the bottom of the furnace body is fixedly connected to a liquid discharge pipe; the top of the furnace body is fixedly connected to an exhaust pipe; the interior of the exhaust pipe is fixedly connected to a ring plate; the middle part of the ring plate is slidably connected to a sliding rod; the top end of the sliding rod is fixedly connected to a spring; the other end of the spring is fixedly connected to the top of the ring plate; the bottom end of the sliding rod is fixedly connected to a rubber plug; the middle diameter of the rubber plug is larger than the inner diameter of the ring plate; through the above structure, when cooling liquid is added to the interlayer to cool the inner furnace core and the furnace, the residual air in the interlayer can be reduced, and the evaporated gas can be discharged in time, reducing the occurrence of a decrease in heat exchange effect caused by the presence of gas, thereby improving the cooling effect of the vacuum furnace.

[0007] Preferably, a pair of fixing buckles are fixed to the side walls of the exhaust pipe; a connecting plate is slidably connected to the middle of the fixing buckle; a dust cover is fixed to the top of a pair of connecting plates; and a limiting block is fixed to the bottom of the connecting plate; through the above structure, the occurrence of liquid leakage caused by impurities falling on the surface of the plug and the loose fit between the plug and the inner wall of the ring plate is reduced.

[0008] Preferably, a fixing rod is fixedly connected to the middle of the exhaust pipe; a limiting rod is fixedly connected to the top of the fixing rod; a sliding groove is opened in the middle of the sliding rod; the limiting rod is slidably connected to the inside of the sliding groove; through the above structure, the situation where the rubber plug cannot block the ring plate in time due to shaking and causes leakage is reduced.

[0009] Preferably, a plurality of heat conducting plates are fixedly connected to the middle of the inner furnace shell; the plurality of heat conducting plates are staggered; the heat conducting plates and the inner side wall of the furnace body are non-contacted; through the above structure, the contact area between the inner furnace shell and the cooling liquid can be increased, and the low-temperature cooling liquid can be distributed more evenly in the interlayer, thereby improving the cooling effect of the vacuum furnace.

[0010] Preferably, both ends of the heat conducting plate are fixed with elastic rods; the end of the elastic rod away from the heat conducting plate is fixed with a water baffle; through the above structure, the cooling liquid can leave the surface of the inner furnace faster after heat exchange, thereby improving the cooling effect of the inner furnace.

[0011] Preferably, a plurality of flexible wires are fixed to the bottom of the water baffle; a counterweight is fixed to the bottom end of the flexible wire; through the above structure, bubbles attached to the surface of the inner furnace due to liquid evaporation fall off, so that the cooling liquid can fully contact the inner furnace, further improving the heat exchange cooling effect.

[0012] Preferably, the heat conducting plate is arranged in an arc shape; the arc shape of the heat conducting plate is arranged so that the middle height is lower than the two ends; through the above structure, the accumulation of bubbles at the bottom of the heat conducting plate, resulting in insufficient contact between the cooling liquid and the inner furnace, is reduced, thereby improving the heat exchange cooling effect.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The sandwich vacuum furnace described in the utility model, through the arrangement of the exhaust pipe, ring plate, slide rod, spring, and rubber plug, can reduce the residual air in the sandwich when cooling liquid is added to the inner furnace core and the furnace to cool down the furnace, and can discharge the evaporated gas in time, thereby reducing the occurrence of a decrease in heat exchange effect caused by the presence of gas, thereby improving the cooling effect of the vacuum furnace.

[0015] 2. The sandwich vacuum furnace described in the present invention prevents external impurities from easily entering the interior of the exhaust pipe through the arrangement of fixing buckles, connecting plates, and dust covers, thereby reducing the occurrence of liquid leakage caused by impurities falling on the surface of the rubber plug and the loose fit between the rubber plug and the inner wall of the ring plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the inner furnace in the utility model;

[0019] Figure 3 It is a schematic structural diagram of the exhaust pipe in the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the heat conducting plate in the utility model;

[0021] In the figure: 1. Furnace body; 12. Inner furnace; 13. Liquid inlet pipe; 14. Liquid discharge pipe; 15. Exhaust pipe; 16. Ring plate; 17. Slide rod; 18. Spring; 19. Rubber plug; 2. Fixing buckle; 21. Connecting plate; 22. Dust cover; 23. Limit block; 3. Fixing rod; 31. Limit rod; 32. Slide groove; 4. Heat conducting plate; 5. Elastic rod; 51. Water baffle; 6. Flexible wire; 61. Counterweight. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figures 1 to 3As shown, a sandwich vacuum furnace according to an embodiment of the present invention comprises a furnace body 1; an inner furnace 12 is fixedly connected to the interior of the furnace body 1; a gap exists between the middle of the inner furnace 12 and the shell of the furnace body 1; a liquid inlet pipe 13 is fixedly connected to the top of the furnace body 1; a liquid discharge pipe 14 is fixedly connected to the bottom of the furnace body 1; an exhaust pipe 15 is fixedly connected to the top of the furnace body 1; a ring plate 16 is fixedly connected to the interior of the exhaust pipe 15; a slide rod 17 is slidably connected to the middle of the ring plate 16; and a top of the slide rod 17 is fixedly connected to the bottom of the slide rod 17. Spring 18; the other end of the spring 18 is fixed to the top of the ring plate 16; the bottom end of the slide rod 17 is fixed with a rubber plug 19; the middle diameter of the rubber plug 19 is larger than the inner diameter of the ring plate 16; when working, after the vacuum furnace is used, the valve of the liquid inlet pipe 13 is opened and cooling liquid is supplied to the interlayer between the furnace body 1 and the inner furnace 12. The liquid level in the interlayer will gradually rise. At the same time, the gas in the interlayer will be squeezed into the exhaust pipe 15, and the gas will rise through the hole in the middle of the ring plate 16 and exit from the exhaust pipe 15. The top is discharged. As the air in the interlayer is discharged, more and more liquid will enter the interior of the exhaust pipe 15. At this time, the rubber plug 19 is impacted by the water flow and rises. After the rubber plug 19 blocks the middle hole of the ring plate 16, it stops, so that the cooling liquid will not be easily discharged through the exhaust pipe 15. Then the valve of the drain pipe 14 is opened to allow the coolant to circulate, and the inner furnace 12 and the furnace are cooled. When the coolant is evaporated to form gas, the gas will overflow into the exhaust pipe 15 again. In this case, the air pressure is much lower than the water pressure, so that the rubber plug 19 opens the ring plate 16 when the elastic force of the spring 18 decreases, so that the gas can be discharged, reducing the situation where the surface of the inner furnace 12 is not in sufficient contact with the cooling liquid due to the presence of gas. Through the above structure, when cooling liquid is added to the interlayer to cool the inner furnace 12 and the furnace, the air residue in the interlayer is reduced, and the evaporated gas can be discharged in time, reducing the situation where the heat exchange effect is reduced due to the presence of gas, thereby improving the cooling effect of the vacuum furnace.

[0024] like Figures 1 to 3 As shown, the side wall of the exhaust pipe 15 is fixed with a pair of fixing buckles 2; the middle part of the fixing buckle 2 is slidably connected with a connecting plate 21; the top of a pair of connecting plates 21 is fixed with a dust cover 22; the bottom of the connecting plate 21 is fixed with a limiting block 23; during operation, when the gas overflows from the top of the exhaust pipe 15, the overflowing gas will push up the dust cover 22, so that the dust cover 22 is separated from the top of the exhaust pipe 15, thereby allowing the gas to overflow. When there is no gas overflow, the dust cover 22 will fall due to its own gravity and cover the top of the exhaust pipe 15, so that external impurities will not easily enter the interior of the exhaust pipe 15, thereby reducing the occurrence of liquid leakage caused by the impurities falling on the surface of the rubber plug 19 and the loose fit between the rubber plug 19 and the inner wall of the ring plate 16.

[0025] like Figures 1 to 3As shown, a fixing rod 3 is fixedly connected to the middle of the exhaust pipe 15; a limiting rod 31 is fixedly connected to the top of the fixing rod 3; a sliding groove 32 is opened in the middle of the sliding rod 17; the limiting rod 31 is slidably connected to the inside of the sliding groove 32; when working, the sliding rod 17 will slide along the sliding groove 32 and will not shake easily, thereby reducing the situation where the rubber plug 19 cannot block the ring plate 16 in time due to shaking, resulting in leakage.

[0026] like Figures 1 to 4 As shown, a plurality of heat conducting plates 4 are fixedly connected to the middle part of the inner furnace 12; the plurality of heat conducting plates 4 are staggered; the heat conducting plates 4 are non-contacting with the inner side wall of the furnace body 1; during operation, the heat contained in the inner furnace 12 will be conducted to the plurality of heat conducting plates 4. When the interlayer is filled with cooling liquid, the plurality of heat conducting plates 4 will exchange heat with the cooling liquid. By setting the plurality of heat conducting plates 4, the contact area between the inner furnace 12 and the cooling liquid can be increased, thereby improving the heat exchange effect. At the same time, when the coolant flows through the plurality of heat conducting plates 4, the staggered plurality of heat conducting plates 4 will disrupt the flow direction of the liquid, so that the low-temperature cooling liquid injected into the interlayer can flow to various places in the interlayer, so that the temperature of the cooling liquid in various places in the interlayer can become more uniform, thereby improving the cooling effect. Through the above structure, the contact area between the inner furnace 12 and the cooling liquid can be increased, and the low-temperature cooling liquid can be distributed more evenly in the interlayer, thereby improving the cooling effect of the vacuum furnace.

[0027] like Figures 1 to 4 As shown, elastic rods 5 are fixedly connected to both ends of the heat conducting plate 4; a water baffle 51 is fixedly connected to one end of the elastic rod 5 away from the heat conducting plate 4; during operation, the cooling liquid in the interlayer will continuously impact the multiple water baffles 51 when flowing, and the multiple water baffles 51 will drive the elastic rods 5 to swing when impacted by the water flow, thereby further disrupting the flow direction of the liquid, so that the cooling liquid can leave the surface of the inner furnace 12 faster after heat exchange, thereby improving the cooling effect of the inner furnace 12.

[0028] like Figures 1 to 4 As shown, a plurality of flexible wires 6 are fixed to the bottom of the water baffle 51; a counterweight 61 is fixed to the bottom end of the flexible wire 6; during operation, when the cooling liquid flows through the plurality of flexible wires 6 and the counterweight 61, the counterweight 61 will swing with the water flow, and the plurality of counterweights 61 will hit the surface of the inner furnace 12 when swinging, so that the bubbles attached to the surface of the inner furnace 12 due to evaporation of the liquid fall off, so that the cooling liquid can fully contact the inner furnace 12, further improving the heat exchange and cooling effect.

[0029] like Figure 4As shown, the heat conducting sheet 4 is arranged in an arc shape; the arc shape of the heat conducting sheet 4 is arranged so that the middle height is lower than the two ends; when working, the bubbles generated by the evaporation of the liquid will move along the bottom curve of the heat conducting sheet 4 toward the two ends of the heat conducting sheet 4 and rise, thereby reducing the accumulation of bubbles at the bottom of the heat conducting sheet 4, resulting in insufficient contact between the cooling liquid and the inner furnace 12, thereby improving the heat exchange cooling effect.

[0030] During operation, after the vacuum furnace is used up, the valve of the liquid inlet pipe 13 is opened and cooling liquid is supplied to the interlayer between the furnace body 1 and the inner furnace 12. The liquid level in the interlayer will gradually rise. At the same time, the gas in the interlayer will be squeezed into the exhaust pipe 15. The gas will rise through the hole in the middle of the ring plate 16 and be discharged from the top of the exhaust pipe 15. As the air in the interlayer is discharged, more and more liquid will enter the interior of the exhaust pipe 15. At this time, the rubber plug 19 is impacted by the water flow and rises. After the rubber plug 19 blocks the hole in the middle of the ring plate 16, it stops, so that the cooling liquid will not be easily discharged through the exhaust pipe 15, and then the rubber plug 19 is opened. Open the valve of the drain pipe 14 to allow the coolant to circulate, dissipating heat and cooling the inner furnace 12 and the furnace. When the coolant is evaporated to form gas, the gas will overflow into the exhaust pipe 15 again. In this case, the air pressure is much lower than the water pressure, so that the rubber plug 19 opens the ring plate 16 when the elastic force of the spring 18 decreases, allowing the gas to be discharged, reducing the occurrence of insufficient contact between the surface of the inner furnace 12 and the cooling liquid caused by the presence of gas. When the gas overflows from the top of the exhaust pipe 15, the overflowing gas will push up the dust cover 22, separating the dust cover 22 from the top of the exhaust pipe 15, thereby allowing the gas to overflow. When the exhaust pipe 15 is out, the dust cover 22 will fall due to its own gravity and cover the top of the exhaust pipe 15, so that external impurities will not easily enter the interior of the exhaust pipe 15. The heat contained in the inner furnace 12 will be conducted to the multiple heat conducting sheets 4. When the interlayer is filled with cooling liquid, the multiple heat conducting sheets 4 will exchange heat with the cooling liquid. By setting up multiple heat conducting sheets 4, the contact area between the inner furnace 12 and the cooling liquid can be increased, thereby improving the heat exchange effect. At the same time, when the coolant flows through the multiple heat conducting sheets 4, the staggered multiple heat conducting sheets 4 will disrupt the flow direction of the liquid, so that the low-temperature cooling liquid injected into the interlayer can flow to the interlayer. The cooling liquid in the interlayer is made to have a relatively uniform temperature at various locations within the interlayer, thereby improving the cooling effect. The cooling liquid in the interlayer will continuously impact the multiple water baffles 51 when flowing. The multiple water baffles 51 will drive the elastic rods 5 to swing when impacted by the water flow, thereby further disrupting the flow direction of the liquid, so that the cooling liquid can leave the surface of the inner furnace 12 faster after heat exchange. When the cooling liquid flows through the multiple flexible wires 6 and the counterweights 61, the counterweights 61 will swing with the water flow, and the multiple counterweights 61 will hit the surface of the inner furnace 12 when swinging, so that the bubbles attached to the surface of the inner furnace 12 due to the increase in liquid will fall off.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A sandwich vacuum furnace, comprising a furnace body (1); characterized in that: An inner furnace bladder (12) is fixedly connected to the interior of the furnace body (1); a gap exists between the middle of the inner furnace bladder (12) and the shell of the furnace body (1); a liquid inlet pipe (13) is fixedly connected to the top of the furnace body (1); a liquid discharge pipe (14) is fixedly connected to the bottom of the furnace body (1); an exhaust pipe (15) is fixedly connected to the top of the furnace body (1); a ring plate (16) is fixedly connected to the interior of the exhaust pipe (15); a sliding rod (17) is slidably connected to the middle of the ring plate (16); a spring (18) is fixedly connected to the top of the sliding rod (17); the other end of the spring (18) is fixedly connected to the top of the ring plate (16); a rubber plug (19) is fixedly connected to the bottom end of the sliding rod (17); the diameter of the middle part of the rubber plug (19) is larger than the inner diameter of the ring plate (16).

2. The sandwich vacuum furnace according to claim 1, characterized in that: A pair of fixing buckles (2) are fixedly connected to the side walls of the exhaust pipe (15); a connecting plate (21) is slidably connected to the middle of the fixing buckles (2); a dust cover (22) is fixedly connected to the top of the pair of connecting plates (21); and a limiting block (23) is fixedly connected to the bottom of the connecting plate (21).

3. The sandwich vacuum furnace according to claim 1, characterized in that: A fixing rod (3) is fixedly connected to the middle of the exhaust pipe (15); a limiting rod (31) is fixedly connected to the top of the fixing rod (3); a sliding groove (32) is opened in the middle of the sliding rod (17); and the limiting rod (31) is slidably connected to the inside of the sliding groove (32).

4. The sandwich vacuum furnace according to claim 1, characterized in that: A plurality of heat conducting plates (4) are fixedly connected to the middle of the inner furnace (12); the plurality of heat conducting plates (4) are arranged in a staggered manner; and the heat conducting plates (4) are arranged in a non-contact manner with the inner side wall of the furnace body (1).

5. The sandwich vacuum furnace according to claim 4, characterized in that: Both ends of the heat conducting plate (4) are fixedly connected to elastic rods (5); one end of the elastic rod (5) away from the heat conducting plate (4) is fixedly connected to a water baffle (51).

6. The sandwich vacuum furnace according to claim 5, characterized in that: A plurality of flexible wires (6) are fixedly connected to the bottom of the water retaining plate (51); and a counterweight block (61) is fixedly connected to the bottom end of the flexible wire (6).

7. The sandwich vacuum furnace according to claim 4, characterized in that: The heat conducting plate (4) is arranged in an arc shape; the arc shape of the heat conducting plate (4) is arranged such that the middle portion is lower in height than the two ends.

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