Metal heat treatment furnace

Abstract

The utility model relates to a metal heat treatment furnace, which belongs to the technical field of heat treatment furnaces and comprises a heat treatment furnace main body, a furnace cover is arranged above the heat treatment furnace main body, a cooling mechanism is arranged on the furnace cover, a lifting mechanism is arranged on the back side of the heat treatment furnace main body, and a heat treatment frame is arranged below the furnace cover. According to the metal heat treatment furnace, by starting a draught fan, negative pressure is generated in a filter box, harmful gas generated by heat treatment is pumped into the filter box, the harmful gas enters a second connecting pipe after being subjected to three-layer filtration, and whether the harmful gas reaches the safe emission standard or not is monitored by a gas analysis monitor; and the metal is conveyed into the water tank to be subjected to heat exchange with the cooling liquid, the metal subjected to heat treatment is cooled, the metal subjected to heat treatment is conveniently taken, the purposes of cooling the material and preventing harmful gas from being directly discharged to pollute the environment are achieved, and the beneficial effects that the material is cooled, meanwhile, the harmful gas is filtered and the like are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment furnaces, and particularly relates to a metal heat treatment furnace. Background Technique

[0002] A heat treatment furnace refers to an electric furnace or fuel furnace for heating furnace materials for heat treatment. Commonly used heat treatment furnaces include box-type resistance furnaces, pit-type resistance furnaces, gas carburizing furnaces, and salt bath furnaces, etc. Continuously operating furnaces are usually used. Workpieces are continuously loaded through the loading door, pass through the furnace chamber, and are continuously unloaded through the unloading door. Generally, the common conveying method inside the furnace is to place the workpieces on heat-resistant steel guide rails and transfer them by a stepping moving beam or a pusher. In recent years, a conveying method using a heat-resistant steel conveyor belt has gradually been adopted. In this way, the heat treatment operation is more rationalized, greatly increasing the possibility of automation and unmanned management in the heat treatment process.

[0003] For example, Chinese Patent CN216445424U discloses a heat treatment furnace for convenient metal surface heat treatment operation in metal processing, including a fixed mounting plate. An installation chute is connected to the outside of the fixed mounting plate. A processing furnace body is installed inside the installation chute. A furnace cover is connected to the side of the processing furnace body away from the installation chute. Two installation fixing plates are arranged on the outside of the fixed mounting plate. Moving adjustment devices are connected to the opposite sides of the two installation fixing plates. A transmission box is arranged on the side of the installation fixing plate away from the fixed mounting plate.

[0004] The above-mentioned heat treatment furnace for convenient metal surface heat treatment operation in metal processing still has certain deficiencies. It provides the necessary power output for the overall device through a bidirectional motor, and then drives the threaded block to move up and down to automatically complete the task of opening and closing the furnace cover, improving work efficiency and usage effect. However, after the workpiece processing is completed, the material temperature is relatively high, and it is difficult to effectively cool the material. Moreover, harmful gases may also be generated during the metal heat treatment process. When the furnace cover is opened, the harmful gases are likely to escape into the air, causing damage to the physical health of the staff. Therefore, this application proposes a metal heat treatment furnace to solve the above problems. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a metal heat treatment furnace, which has the advantages of cooling the material and filtering harmful gases at the same time, and solves the problem that when the furnace cover is opened, harmful gases are likely to escape into the air, causing damage to the physical health of the staff.

[0006] To achieve the above object, the utility model provides the following technical solution: A metal heat treatment furnace includes a heat treatment furnace main body. A furnace cover is arranged above the heat treatment furnace main body. A cooling mechanism is provided on the furnace cover. A lifting mechanism is arranged on the back side of the heat treatment furnace main body. A heat treatment rack is arranged below the furnace cover.

[0007] Furthermore, the cooling mechanism includes two brackets respectively fixed to the left and right sides of the furnace cover near its bottom end. Inside both brackets, there are hollow cylinders horizontally arranged opposite to each other. On the outer side of both hollow cylinders, there is a first connecting pipe connected. On the right side of the furnace cover, there is a filter box. On the left side of the furnace cover, there is a blower. The air suction end of the blower is connected to a second connecting pipe. Above the furnace cover, there is a water tank. On the outer side of the second connecting pipe, there is a gas analysis monitor, and its detection end extends into the interior of the second connecting pipe. On the outer side of the second connecting pipe, there is a diversion pipe located on the left side of the gas analysis monitor. Inside the second connecting pipe, there is a three-way valve located on the left side of the diversion pipe. On the upper surface of the three-way valve, there is an air inlet pipe.

[0008] Furthermore, the end of the second connecting pipe away from the blower penetrates the left side of the water tank and its right inner wall and extends to the right side of the water tank and is connected to the upper surface of the filter box. The gas analysis monitor is located above the filter box.

[0009] Furthermore, the left first connecting pipe is connected to the air outlet end of the blower, and the right first connecting pipe is connected to the lower surface of the filter box.

[0010] Furthermore, inside the filter box, there are three filter plates arranged obliquely. Inside the water tank, there is a refrigerating sheet. The heat-conducting end of the refrigerating sheet is arranged on the left side of the water tank, and the heat-absorbing end of the refrigerating sheet is arranged inside the water tank.

[0011] Furthermore, the interior of the water tank is filled with coolant. The back side of the water tank is fixedly connected to a liquid injection pipe. A valve is installed inside the diversion pipe.

[0012] Furthermore, the lifting mechanism includes an electric push rod arranged on the back side of the heat treatment furnace main body. On the outer side of the output shaft of the electric push rod, there is a connecting column. At the top of the connecting column, there is a connecting plate.

[0013] Furthermore, on both the upper and lower sides of the connecting plate, there are support frames fixed to the back side of the furnace cover. At the upper surface of the heat treatment furnace main body and near its corners, there are four positioning rods. On the lower surface of the furnace cover, there are positioning grooves slidably connected to the positioning rods.

[0014] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0015] The metal heat treatment furnace starts the blower to create negative pressure inside the filter box, sucking the harmful gases generated during heat treatment into the interior of the filter box. The harmful gases pass through three layers of filtration and enter the interior of the second connecting pipe, where they are monitored by a gas analysis monitor to check if they meet the safe emission standards. If they do, they are transferred to the interior of the water tank for heat exchange with the coolant and used to cool the heat-treated metal, facilitating the removal of the heat-treated metal. If the emission standards are not met, outside air is drawn into the interior of the second connecting pipe, and the gases that do not meet the emission standards are connected to an external air extractor through a diversion pipe and discharged to an area for further purification, achieving the purpose of facilitating the cooling of materials and preventing direct emission of harmful gases from polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the present utility model;

[0017] Figure 2 is a rear view of the structure of the present utility model;

[0018] Figure 3 is a schematic view of the cooling mechanism of the present utility model;

[0019] Figure 4 is a schematic view of the lifting mechanism of the present utility model.

[0020] In the figure: 1 heat treatment furnace main body, 2 cooling mechanism, 201 support, 202 hollow cylinder, 203 first connecting pipe, 204 filter box, 205 second connecting pipe, 206 blower, 207 water tank, 208 gas analysis monitor, 209 diversion pipe, 210 three-way valve, 211 air inlet pipe, 3 furnace cover, 4 lifting mechanism, 401 electric push rod, 402 connecting column, 403 connecting plate, 5 heat treatment rack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 2 , a metal heat treatment furnace in this embodiment includes a heat treatment furnace main body 1, a furnace cover 3 is arranged above the heat treatment furnace main body 1, a cooling mechanism 2 is arranged on the furnace cover 3, a lifting mechanism 4 is arranged on the back side of the heat treatment furnace main body 1, and a heat treatment rack 5 is arranged below the furnace cover 3.

[0023] Please refer to Figure 3, in this embodiment, the cooling mechanism 2 includes two brackets 201 respectively fixed to the left and right sides of the furnace cover 3 near its bottom end. Inside both brackets 201, there are hollow cylinders 202 horizontally arranged opposite to each other and fixed. On the outer sides of both hollow cylinders 202, there is a first connecting pipe 203 connected. On the right side of the furnace cover 3, there is a filter box 204. On the left side of the furnace cover 3, there is a fan 206. The air suction end of the fan 206 is connected to a second connecting pipe 205. Above the furnace cover 3, there is a water tank 207. On the outer side of the second connecting pipe 205, there is a gas analysis monitor 208, and its detection end extends into the interior of the second connecting pipe 205. On the outer side of the second connecting pipe 205, there is a diversion pipe 209 located on the left side of the gas analysis monitor 208. Inside the second connecting pipe 205, there is a three-way valve 210 located on the left side of the diversion pipe 209. On the upper surface of the three-way valve 210, there is an air inlet pipe 211.

[0024] One end of the second connecting pipe 205 away from the fan 206 penetrates the left side of the water tank 207 and the right side wall of its inner cavity and extends to the right side of the water tank 207 and is connected to the upper surface of the filter box 204. The gas analysis monitor 208 is located above the filter box 204. The left first connecting pipe 203 is connected to the air outlet end of the fan 206. The right first connecting pipe 203 is connected to the lower surface of the filter box 204. Inside the filter box 204, there are three filter plates inclined. By starting the fan 206, a negative pressure is generated inside the filter box 204. Subsequently, the harmful gases generated by the heat treatment can be sucked into the interior of the filter box 204 by the right hollow cylinder 202. Subsequently, the harmful gases pass through three layers of filtration and enter the interior of the second connecting pipe 205, and are monitored by the gas analysis monitor 208 to determine whether they meet the safety emission standards. Inside the water tank 207, there is a refrigeration chip. The heat conducting end of the refrigeration chip is set on the left side of the water tank 207, and the heat absorbing end of the refrigeration chip is set inside the water tank 207. The interior of the water tank 207 is filled with coolant. If the emission standards are met, it is transmitted to the interior of the water tank 207 for heat exchange with the coolant, and is transmitted through the fan 206 to the interior of the left hollow cylinder 202 so that the cooled gas cools the heat-treated metal, facilitating the taking of the heat-treated metal. On the back side of the water tank 207, there is a liquid injection pipe fixedly connected. A valve is installed inside the diversion pipe 209. If the emission standards are not met, the three-way valve 210 closes the right end valve port and opens the upper and left end valve ports, sucking outside air into the interior of the second connecting pipe 205, and the gas that does not meet the emission standards is connected to an outside air extractor through the diversion pipe 209 and discharged to an area for further purification for treatment.

[0025] Please refer to Figure 4 , in this embodiment, the lifting mechanism 4 includes an electric push rod 401 arranged on the back side of the heat treatment furnace main body 1. On the outer side of the output shaft of the electric push rod 401, there is a connecting column 402. At the top of the connecting column 402, there is a connecting plate 403.

[0026] Support frames fixed to the back side of the furnace cover 3 are provided on both the upper and lower sides of the connecting plate 403. Four positioning rods are fixed on the upper surface of the heat treatment furnace main body 1 near its corners. Start the electric push rod 401 to drive the furnace cover 3 to lift by the connecting plate 403, so that the furnace cover 3 slides vertically outside the four positioning rods. At this time, the heat treatment rack 5 moves out of the interior of the heat treatment furnace main body 1. Place the metal to be heat-treated on the inner bottom wall of the heat treatment rack 5. Then, the electric push rod 401 can be reset, and the heat treatment furnace main body 1 is used to heat-treat the metal. After the heat treatment is completed, the electric push rod 401 is used to lift the furnace cover 3. A positioning groove slidably connected to the positioning rod is provided on the lower surface of the furnace cover 3.

[0027] It can be understood that by starting the blower 206, negative pressure is generated inside the filter box 204, and the harmful gases generated by the heat treatment are drawn into the interior of the filter box 204. The harmful gases pass through three layers of filtration and enter the interior of the second connecting pipe 205, and are monitored by the gas analysis monitor 208 to determine whether they meet the safe emission standards. If they meet the standards, they are transmitted to the interior of the water tank 207 for heat exchange with the coolant, and the metal after the heat treatment is cooled, which is convenient for taking the metal after the heat treatment. If the emission standards are not met, the outside air is drawn into the interior of the second connecting pipe 205, and the gases that do not meet the emission standards are connected to an external air extractor through the diversion pipe 209 and discharged to an area for further purification for treatment, achieving the purpose of facilitating the cooling of the materials and avoiding direct emission of harmful gases to pollute the environment.

[0028] All the electrical components mentioned in the text are electrically connected to the main controller and the power supply, and all the electrical components mentioned in the text are conventional known devices. This application will not elaborate too much. The main controller can be a conventional known device such as a computer for control. The control circuit of the main controller can be realized by simple programming by those skilled in the art. The provision of the power supply also belongs to the common knowledge in the art. And this utility model is mainly used to protect mechanical devices, so this utility model will not explain the control method and circuit connection in detail. At the same time, for the parts not described in detail in this utility model, they are all well-known technologies to those skilled in the art.

[0029] In the description of this utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood through specific situations.

[0030] The working principle of the above embodiment is as follows:

[0031] (1) When the metal heat treatment furnace needs to be used, start the electric push rod 401 to drive the connecting plate 403 to lift the furnace cover 3, so that the furnace cover 3 slides vertically outside the four positioning rods. At this time, the heat treatment rack 5 moves out of the interior of the heat treatment furnace body 1. Place the metal to be heat-treated on the inner bottom wall of the heat treatment rack 5, and then the electric push rod 401 can be reset. Use the heat treatment furnace body 1 to heat-treat the metal. After the heat treatment is completed, use the electric push rod 401 to lift the furnace cover 3.

[0032] (2) To facilitate the taking of the heat-treated metal, start the blower 206 to generate negative pressure inside the filter box 204. Then, the harmful gases generated during heat treatment can be drawn into the interior of the filter box 204 through the right hollow cylinder 202. Subsequently, the harmful gases pass through three layers of filtration and enter the interior of the second connecting pipe 205, and are monitored by the gas analysis monitor 208 to check whether they meet the safety emission standards. If they meet the standards, they are transmitted to the interior of the water tank 207 to exchange heat with the coolant, and are transmitted through the blower 206 to the interior of the left hollow cylinder 202 so that the cooled gas cools the heat-treated metal, facilitating the taking of the heat-treated metal; if they do not meet the emission standards, the three-way valve 210 closes the right end valve port, opens the upper and left end valve ports, draws in outside air into the interior of the second connecting pipe 205, and the gas that does not meet the emission standards is connected to an outside air extractor through the diversion pipe 209 and discharged to an area for further purification and treatment.

[0033] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal heat treatment furnace, comprising a heat treatment furnace main body (1), characterized in that: Above the heat treatment furnace main body (1), there is a furnace cover (3). A cooling mechanism (2) is provided on the furnace cover (3). A lifting mechanism (4) is provided on the back side of the heat treatment furnace main body (1). A heat treatment rack (5) is arranged below the furnace cover (3). The cooling mechanism (2) includes two brackets (201) respectively fixed at the left and right sides of the furnace cover (3) near its bottom end. Inside both of the two brackets (201), there are hollow cylinders (202) horizontally arranged opposite to each other and fixed. On the outer sides of both of the two hollow cylinders (202), there is a first connecting pipe (203) communicated. A filter box (204) is arranged on the right side of the furnace cover (3). A fan (206) is arranged on the left side of the furnace cover (3). The air suction end of the fan (206) is communicated with a second connecting pipe (205). A water tank (207) is arranged above the furnace cover (3). A gas analysis monitor (208) is arranged on the outer side of the second connecting pipe (205), and its detection end extends into the inside of the second connecting pipe (205). A diversion pipe (209) is arranged on the outer side of the second connecting pipe (205) and on the left side of the gas analysis monitor (208). A three-way valve (210) is arranged inside the second connecting pipe (205) and on the left side of the diversion pipe (209). An air inlet pipe (211) is arranged on the upper surface of the three-way valve (210).

2. The metal heat treatment furnace according to claim 1, characterized in that: One end of the second connecting pipe (205) far from the fan (206) penetrates through the left side of the water tank (207) and the right side wall of its inner cavity and extends to the right side of the water tank (207) and is communicated with the upper surface of the filter box (204). The gas analysis monitor (208) is located above the filter box (204).

3. A metal heat treatment furnace according to claim 1, characterized in that: The left first connecting pipe (203) is communicated with the air outlet end of the fan (206). The right first connecting pipe (203) is communicated with the lower surface of the filter box (204).

4. A metal heat treatment furnace according to claim 1, wherein: Inside the filter box (204), there are three filter plates arranged obliquely. Inside the water tank (207), there is a refrigeration sheet. The heat conducting end of the refrigeration sheet is arranged on the left side of the water tank (207). The heat absorbing end of the refrigeration sheet is arranged inside the water tank (207).

5. A metal heat treatment furnace according to claim 1, characterized in that: The inside of the water tank (207) is filled with a coolant. A liquid injection pipe is fixedly communicated with the back side of the water tank (207). A valve is installed inside the diversion pipe (209).

6. The metal heat treatment furnace according to claim 1, characterized in that: The lifting mechanism (4) includes an electric push rod (401) arranged on the back side of the heat treatment furnace main body (1). A connecting column (402) is arranged on the outer side of the output shaft of the electric push rod (401). A connecting plate (403) is arranged at the top end of the connecting column (402).

7. A metal heat treatment furnace according to claim 6, characterized in that: On the upper and lower sides of the connecting plate (403), there are support frames fixed to the back side of the furnace cover (3). Four positioning rods are fixed on the upper surface of the heat treatment furnace main body (1) and near its corners. Positioning grooves for sliding connection with the positioning rods are opened on the lower surface of the furnace cover (3).

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