CN210268189U

CN210268189U - Atmosphere furnace

Info

Publication number: CN210268189U
Application number: CN201921135383.8U
Authority: CN
Inventors: 罗此树; 罗陆光; 邹怀利; 赵朋飞
Original assignee: Zhengzhou Hengsu Electronic Technology Co Ltd
Current assignee: Zhengzhou Hengsu Electronic Technology Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-04-07
Anticipated expiration: 2029-07-19

Abstract

The utility model discloses an atmosphere furnace, which comprises a furnace body, install the furnace gate on the furnace body, be equipped with the furnace chamber in the furnace body, furnace chamber and atmosphere system link to each other, be equipped with consecutive heating area in the furnace chamber, heat preservation district and cooling area, cooling area is equipped with exhaust pipe and is connected with heat exchanger, heat exchanger is connected with the circulating pipe through an air pump, the circulating pipe other end is connected with heating area, be provided with around the water route around the outside of the entry of furnace chamber, be provided with the sealing washer with around the corresponding position in water route on the furnace gate, the sealing washer cooperatees with surrounding the water route, atmosphere system connects the air supply jar outside furnace chamber and the furnace body in order to. The utility model discloses can realize carrying different atmosphere gas in the atmosphere stove simultaneously, encircle the water route through the setting and carry out the contact cooling to the sealing washer, improve the life of sealing washer greatly, improve the gas tightness of furnace body, gas in the atmosphere stove can reuse after the cooling zone discharges, has energy-conserving, reduce cost's advantage.

Description

Atmosphere furnace

Technical Field

The utility model relates to an atmosphere furnace technical field especially relates to a heating atmosphere furnace that can be used to many atmospheres.

Background

An atmosphere furnace is an apparatus for performing experiments related to materials under certain atmosphere conditions, and generally includes a furnace chamber, an inlet duct, and an outlet duct. A constant temperature area is divided in the furnace chamber, the constant temperature area is generally positioned in the middle of the furnace chamber, and the sample is sintered in the constant temperature area. Different materials are sintered in proper atmosphere, which is beneficial to the sintering process, improves the densification degree of the product and obtains the product with good performance.

The atmosphere furnace is usually used in various atmospheres such as vacuum, hydrogen, oxygen, nitrogen, and inert gas (e.g., argon). The existing atmosphere furnace can only be used for introducing one atmosphere gas, and the introduced atmosphere gas is single, so that the function of the atmosphere furnace is single, and the sintering treatment can only be simply carried out on the material. However, in the process of manufacturing electronic components, heat pipes, activated carbon, and other products, different atmospheres need to be introduced into the atmosphere furnace for sintering. For an atmosphere furnace, the tightness of a furnace chamber is related to whether the actual atmosphere of a sintering reaction is consistent with expectations or not, and the existing atmosphere furnace is sealed by a common sealing ring and is easy to age under the influence of continuous high-temperature heating, so that the gas leakage of the furnace chamber is caused.

Therefore, those skilled in the art have made efforts to develop an atmosphere furnace having a simple structure and allowing introduction of different atmosphere gases, while providing a furnace door device having a long service life to ensure a stable atmosphere for the reaction therein.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that present atmosphere furnace can only let in the limitation of an atmosphere gas and the sealing washer is used fast ageing defect that causes gas leakage under for a long time.

In order to achieve the purpose, the utility model provides an atmosphere furnace, which comprises a furnace body, wherein a furnace door is arranged on the furnace body, a furnace chamber is arranged in the furnace body, the furnace chamber is connected with an atmosphere system, a heating area, a heat preservation area and a cooling area which are sequentially connected are arranged in the furnace chamber, a heating device is arranged in the heating area, an exhaust pipe is arranged in the cooling area, the cooling area is also connected with a heat exchanger, one end of the heat exchanger is connected with the exhaust pipe, the other end of the heat exchanger is connected with an air pump, the air pump is connected with a circulating; a surrounding water path is arranged around the outside of an inlet of the furnace chamber, the surrounding water path is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are respectively communicated with the water tank through pipelines, and a water pump is arranged on the water inlet pipe; a sealing ring is arranged on the furnace door at a position corresponding to the surrounding waterway and matched with the surrounding waterway; the atmosphere system is connected with the furnace chamber and an air source tank outside the furnace chamber, and comprises a first air duct, a second air duct and a third air duct which are sequentially connected, wherein one end of the first air duct extends into the furnace chamber, one end of the second air duct is connected with one end of the third air duct through a gas multi-way valve, and one end of the third air duct is connected with the air source tank.

Furthermore, the gas multi-way valve comprises a plurality of inlet ends and an outlet end, the third gas guide pipes are provided with a plurality of gas guide pipes and are connected with the inlet ends in a one-to-one correspondence mode, and the outlet end is connected with one end of the second gas guide pipe.

Furthermore, the furnace door is provided with two stages of sealing blocks, the first stage of sealing block extends into the furnace chamber to be in sealing fit with the furnace chamber, and the second stage of sealing block is matched with a step platform outside the furnace chamber.

Further, the furnace door is connected with the furnace body through a rotating arm.

Furthermore, four corners around the water path are fixed with lock catches, and the lock catches are matched with lock blocks on the furnace door.

Further, the heat exchanger includes air inlet and gas vent, and air inlet and gas vent set up the both sides at the heat exchanger, and the air inlet is connected with the exhaust pipe, and the gas in the exhaust pipe is discharged from the gas vent.

Further, the air inlet and the air outlet are arranged on the same horizontal line.

Further, the diameter of the air inlet is larger than that of the air outlet.

Further, the gas multi-way valve is a one-way conduction valve.

Further, the first air duct is a heat-resistant steel pipe.

The utility model discloses an atmosphere stove has following technological effect:

(1) the plurality of gas guide pipes are connected with different gas source tanks and are connected with gas supply through the multi-way valve, so that different atmosphere gases can be simultaneously conveyed into the atmosphere furnace, and the connection and the operation are convenient;

(2) the surrounding water way is arranged at the inlet of the furnace chamber and is in contact with the sealing ring for cooling, so that the service life of the sealing ring is greatly prolonged, and the air tightness of the furnace body is improved;

(3) the gas in the atmosphere furnace can be reused after being discharged from the cooling section, and the method has the advantages of energy conservation and cost reduction.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a schematic view of the structure of the atmosphere furnace of the present invention.

Fig. 2 is a schematic structural view of the door portion of the atmosphere furnace according to the present invention.

In the figure, 1 furnace body, 11 lock catches, 2 furnace doors, 21 sealing rings, 22 first-stage sealing blocks, 23 second-stage sealing blocks, 24 rotating arms, 25 locking blocks, 3 furnace chambers, 31 heating areas, 32 heat preservation areas, 33 cooling areas, 34 steps, 4 atmosphere systems, 41 first air guide pipes, 42 second air guide pipes, 43 third air guide pipes, 44 gas multi-way valves, 45 flow meters, 5 exhaust air pipes, 6 heat exchangers, 61 air inlets, 62 air outlets, 63 air pumps, 64 circulating air pipes, 7 surrounding water paths, 71 water inlet pipes, 72 water outlet pipes, 73 water tanks and 711 water pumps.

Detailed Description

As shown in fig. 1 is the utility model provides a pair of atmosphere furnace, including furnace body 1, install furnace gate 2 on the furnace body 1, be equipped with furnace chamber 3 in the furnace body 1, furnace chamber 3 links to each other with atmosphere system 4, be equipped with consecutive heating zone 31 in the furnace chamber 3, heat preservation area 32 and cooling zone 33, be equipped with heating device in the heating zone 31, heating device can select for devices commonly used such as heating rod or heating coil, be equipped with exhaust pipe 5 in the cooling zone 33, cooling zone 33 still is connected with heat exchanger 6, heat exchanger 6 is used for providing cold volume to cooling zone 33, make the atmosphere gas temperature wherein reduce to some extent.

As shown in fig. 2, a surrounding water path 7 is provided around the outside of the inlet of the furnace chamber 3, the surrounding water path 7 surrounds a circular water path along the inlet of the furnace chamber 3, and a water inlet pipe 71 and a water outlet pipe 72 are connected to the upper and lower sides of the surrounding water path 7, respectively, the water inlet pipe 71 and the water outlet pipe 72 are communicated with a water tank 73 outside the atmosphere furnace through pipes, and circulating water for cooling is provided by the water tank 73. Meanwhile, a water pump 711 is installed on the water inlet pipe 71. The position corresponding to the surrounding waterway 7 on the furnace door 2 is provided with a sealing ring 21, the sealing ring 21 is matched with the surrounding waterway 7, after the furnace door 2 is closed, the sealing ring 21 is just positioned in the middle of the surrounding waterway 7, and because the circulating cooling water flows for cooling, the sealing ring 21 is not deformed and aged due to overhigh temperature, so that the service life of the furnace door is greatly prolonged.

As a preferred embodiment, the oven door 2 is provided with two sealing blocks at one side of the oven cavity 3, a first sealing block 22 extends into the oven cavity 3 to be in sealing engagement therewith, and a second sealing block 23 is engaged with a step 34 outside the oven cavity 3. Through the arrangement of the two stages of sealing blocks, the heat transfer from the furnace chamber 3 can be reduced, the heat transfer to the furnace door 2 is minimized, and the service life of the sealing ring 21 is further prolonged. In addition, the furnace door 2 is connected with the furnace body 1 through a rotating arm 24. At the both sides that encircle water route 7, every side is fixed with two hasps 11 respectively, and four hasps 11 distribute in four angles of furnace door 2, are equipped with the locking piece 25 with hasp 11 on the furnace door 2 correspondingly, and hasp 11 cooperatees with locking piece 25, fixes through the structure similar to the flange, makes furnace door 2 sealed inseparabler.

Atmosphere system 4 connects the outer air supply jar of furnace chamber 3 and furnace body 1, and atmosphere system 4 is including the first air duct 41, second air duct 42 and the third air duct 43 that connect gradually, and wherein, in first air duct 41 located furnace chamber 3, the one end of first air duct 41 stretched into furnace chamber 3, and the other end is connected with second air duct 42, and the one end of second air duct 42 is passed through being connected of a gas multi-way valve 44 and third air duct 43, and the one end and the air supply jar of third air duct 43 are connected.

Preferably, the first gas-guiding tube 41 is a heat-resistant steel tube, and the first gas-guiding tube 41 extends into the furnace chamber 3 and needs to withstand the high temperature in the furnace chamber 3 when the product is sintered, so that on one hand, the first gas-guiding tube 41 needs to be non-reactive with the atmosphere at high temperature, and on the other hand, the first gas-guiding tube 41 needs not to be deformed at high temperature to cause damage and blockage. The second gas-guide tube 42 is connected to the first gas-guide tube 41, and preferably is a stainless steel tube, which is required to have a certain heat resistance.

In a specific embodiment of the present invention, the gas multi-way valve 44 is a one-way conduction valve, which plays a role of reverse flow stopping and prevents the reverse flow of gas. Further, the gas multi-way valve 44 includes a plurality of inlet ends and an outlet end, meanwhile, the third gas-guide tubes 43 are also provided with a plurality of gas source tanks corresponding to the inlet ends one by one, the other end of each third gas-guide tube 43 is connected to each gas source, and the outlet end of the gas multi-way valve 44 is connected to one end of the second gas-guide tube 42.

Preferably, third air duct 43 can be selected to be rubber tube or silicone tube, has better elasticity and resistant kink nature, has longer life, can conveniently be connected with the air supply jar. The third gas-guide tube 43 is optionally provided with a flow meter 45, which can detect the amount of gas introduced into each pipeline, so that the user can conveniently control the content of the introduced atmosphere.

The heat exchanger 6 is arranged in the cooling zone 33, which is mounted in close contact with the cooling zone 33, optionally, fixed on a heat-conducting surface of the cooling zone 33, for example, by means of a heat-conducting adhesive, and performs heat exchange. The heat exchanger 6 comprises an air inlet 61 and an air outlet 62, the air inlet 61 and the air outlet 62 are arranged on two sides of the heat exchanger 6, the air inlet 61 is connected with the exhaust air pipe 5 of the cooling area 33, and the air in the exhaust air pipe 5 is introduced into the heat exchanger 6 from the air inlet 61 and then is exhausted from the air outlet 62. The intake port 61 and the exhaust port 62 are disposed on the same horizontal line. The diameter of the gas inlet 61 is larger than that of the gas outlet 62 so that the gas can be discharged more rapidly. In order to recycle the atmosphere in the atmosphere furnace, an air pump 63 is connected to the air outlet 62 of the heat exchanger 6, a circulating air pipe 64 is connected to the air pump 63, and the other end of the circulating air pipe 64 is connected to the temperature raising region 31. The temperature of the circulating gas passing through the heat exchanger is reduced, and the circulating gas is introduced into the heating area 31 to reach the target temperature without excessive heating, so that the heating time is shortened, the electric energy is saved, and the cost is reduced.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. An atmosphere furnace, which comprises a furnace body, a furnace door is arranged on the furnace body, a furnace chamber is arranged in the furnace body, the furnace chamber is connected with an atmosphere system, and the atmosphere furnace is characterized in that,

the furnace chamber is internally provided with an elevated temperature region, a heat preservation region and a cooling temperature region which are sequentially connected, the elevated temperature region is internally provided with a heating device, the cooling temperature region is internally provided with an exhaust pipe and is also connected with a heat exchanger, one end of the heat exchanger is connected with the exhaust pipe, the other end of the heat exchanger is connected with an air pump, the air pump is connected with a circulating pipe, and the other end of the circulating pipe is connected with the;

a surrounding water path is arranged around the outside of an inlet of the furnace chamber, the surrounding water path is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are respectively communicated with the water tank through pipelines, and a water pump is arranged on the water inlet pipe; a sealing ring is arranged on the furnace door at a position corresponding to the surrounding waterway and matched with the surrounding waterway;

the atmosphere system is connected with the furnace chamber and an air source tank outside the furnace chamber, and comprises a first air duct, a second air duct and a third air duct which are sequentially connected, wherein one end of the first air duct extends into the furnace chamber, one end of the second air duct is connected with one end of the third air duct through a gas multi-way valve, and one end of the third air duct is connected with the air source tank.

2. The atmosphere furnace according to claim 1, wherein the gas multi-way valve comprises a plurality of inlet ends and an outlet end, the third gas-guide tubes are provided in a plurality and are connected with the inlet ends in a one-to-one correspondence, and the outlet end is connected with one end of the second gas-guide tube.

3. The atmosphere furnace of claim 1, wherein the furnace door is provided with two sealing blocks, a first sealing block extending into the furnace chamber for sealing engagement therewith, and a second sealing block engaging a step platform outside the furnace chamber.

4. The atmosphere furnace according to claim 1, wherein the furnace door is connected to the furnace body by a pivoted arm.

5. The atmosphere furnace of claim 1, wherein latches are secured to the corners of the surrounding waterway, the latches engaging with the locking blocks on the furnace door.

6. The atmosphere furnace according to claim 1, wherein the heat exchanger includes an inlet port and an outlet port, the inlet port and the outlet port being disposed at both sides of the heat exchanger, the inlet port being connected to an exhaust pipe, and gas in the exhaust pipe being exhausted from the outlet port.

7. The atmospheric furnace of claim 6, wherein the gas inlet and the gas outlet are disposed on the same horizontal line.

8. The atmosphere furnace of claim 7, wherein the diameter of the gas inlet is greater than the diameter of the gas outlet.

9. An atmosphere furnace according to claim 1 or 2, wherein the gas multi-way valve is a one-way conductance valve.

10. The atmospheric furnace of claim 1, wherein the first gas-conducting tube is a heat-resistant steel tube.