Carbon residue separation device of heat treatment furnace and heat treatment furnace

Abstract

The utility model is applicable to the technical field of heat treatment furnaces, and provides a carbon residue separation device of a heat treatment furnace, the heat treatment furnace comprises an oil groove lifting mesh belt for conveying carbon residues and products, and the carbon residue separation device of the heat treatment furnace comprises a magnetic force unit, a carbon residue separation unit and a carbon residue separation unit, the device comprises a magnetic roller, a driving machine used for driving the magnetic roller to rotate and a material blocking plate used for receiving the carbon residues and products. The front end of the material blocking plate wraps the outer side of the magnetic roller, and the rear end of the material blocking plate extends in the direction away from the magnetic roller. Therefore, according to the utility model, the carbon residue can be separated from the product, and the bad product caused by the combustion of the carbon residue is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment furnaces, in particular to a carbon slag separation device of a heat treatment furnace and a heat treatment furnace. Background Art

[0002] A heat treatment furnace is a process that uses mechanical transmission rollers to move the conveyor belt forward. The belt carries workpieces such as bolts, nuts or screws through pre-cleaning, high-temperature heating, quenching, post-cleaning, high-temperature tempering and other processes to make the workpieces meet the heat treatment process performance requirements. In the prior art, post-cleaning refers to the process in which the workpiece is lifted from the oil tank and falls into the post-cleaning water tank after high-temperature heating and quenching, and the quenching oil on the surface of the product is removed by water cleaning, and then heated and blown to remove water. High-temperature tempering refers to the process in which the quenched parts enter the tempering furnace, are heated to a temperature above 500 degrees, maintained for a certain period of time, and then air-cooled or water-cooled out of the furnace.

[0003] Heat treatment furnaces are often used to process fasteners such as bolts, screws, and nuts. Through heat treatment processes such as carburizing and tempering, the mechanical properties of the products are met. The high-temperature heating process usually reaches about 860°C. Since carbon-containing substances are used as protective gases (such as methanol, propane, high-temperature cracking gas, etc.), this type of protective gas is sintered in the furnace for a long time, accumulating into black lumps of combustibles (i.e., carbon slag) and falling off continuously. In the quenching process, due to the heat conduction from the upper part of the furnace to the vicinity of the oil surface, the surface temperature of the steel plate in the drop hopper exceeds 200°C. When the product falls into the quenching oil tank, oil spots will splash. The oil spots will continuously contact the high-temperature steel plate surface, and will accumulate and thicken to form carbon slag over a long period of time. When the thickness of carbon slag reaches more than 20mm, it will be knocked off by the falling products, and then the carbon slag will fall into the quenching oil tank with the products for quenching. The carbon slag will absorb enough quenching oil and enter the post-cleaning water tank. In the prior art, the post-cleaning process can only separate the small, floating carbon slag with water drifting by soaking in water and spraying hot air to dry. Most of the carbon slag will still enter the tempering furnace with the products through the oil tank lifting mesh belt. When the tempering furnace temperature reaches about 300℃, the carbon slag will self-ignite, and the temperature of the large carbon slag block at the combustion point can reach more than 900℃, which will cause the temperature of the product burned by the carbon slag to be higher than the tempering temperature required by the process, resulting in the hardness of these products becoming low and the tensile strength failing to meet the requirements.

[0004] Since the timing, volume and quantity of carbon slag falling off are uncertain, and carbon slag is not easy to be found, the current preventive measures are to burn charcoal in the furnace regularly, clean the inside of the furnace and the quenching oil tank every six months, and install a flame sensing alarm device on the side wall of the tempering furnace to monitor and reduce the outflow of defective products.

[0005] In summary, the existing structure has obvious inconveniences and defects in actual use, so it is necessary to improve it. Utility Model Content

[0006] In view of the above-mentioned defects, the purpose of the present invention is to provide a carbon slag separation device for a heat treatment furnace and a heat treatment furnace, so as to separate the carbon slag from the product and avoid product defects caused by the combustion of the carbon slag.

[0007] In order to achieve the above-mentioned object, the utility model provides a carbon slag separation device for a heat treatment furnace, wherein the heat treatment furnace comprises an oil tank lifting mesh belt for conveying carbon slag and products, comprising:

[0008] A magnetic unit, located below the rear end of the oil tank lifting mesh belt, comprises a magnetic roller, a driving machine for driving the magnetic roller to rotate, and a baffle plate for receiving the product;

[0009] The front end of the material baffle plate is wrapped around the outer side of the magnetic roller, and the rear end of the material baffle plate extends in a direction away from the magnetic roller.

[0010] According to the carbon-slag separation device of the heat treatment furnace, it also includes a slag receiving pan, which is located below the magnetic unit.

[0011] According to the carbon slag separation device of the heat treatment furnace, a through hole is opened at the bottom of the slag receiving pan, and the bottom of the slag receiving pan is covered with a wire mesh made of stainless steel.

[0012] According to the carbon slag separation device of the heat treatment furnace, it also includes a demagnetization unit, which is located below the rear end of the baffle plate, and includes a demagnetization machine and a conveyor belt for receiving products dropped from the baffle plate;

[0013] The conveying direction of the conveying belt is from front to back, and the demagnetizing machine is arranged at the rear end of the conveying belt.

[0014] According to the carbon slag separation device of the heat treatment furnace, it also includes a flushing machine for flushing the product on the baffle plate.

[0015] According to the carbon slag separation device of the heat treatment furnace, it also includes a receiving hopper, which is arranged between the oil tank lifting mesh belt and the magnetic unit;

[0016] An inlet is provided above the receiving hopper, the position of which corresponds to the position of the rear end of the oil tank lifting mesh belt, and an outlet is provided below the receiving hopper, the position of which corresponds to the position of the baffle plate.

[0017] According to the carbon slag separation device of the heat treatment furnace, the product is a bolt, a screw or a nut.

[0018] In order to achieve the above-mentioned purpose, the utility model also provides a heat treatment furnace, including an oil tank lifting mesh belt and a cleaning water tank for transporting products with carbon slag, and also includes a carbon slag separation device for the heat treatment furnace as described in any of the above items, wherein the carbon slag separation device for the heat treatment furnace is arranged below the oil tank lifting mesh belt and above the cleaning water tank.

[0019] According to the heat treatment furnace, it also includes a water tank lifting mesh belt arranged on the cleaning water tank, which is used to transfer the product in the cleaning water tank to the tempering furnace.

[0020] In an embodiment of the utility model, a carbon slag separation device for a heat treatment furnace is provided. The heat treatment furnace includes an oil tank lifting mesh belt for transmitting carbon slag and products. The carbon slag separation device for the heat treatment furnace includes: a magnetic unit, located below the rear end of the oil tank lifting mesh belt, including a magnetic roller, a driving machine for driving the magnetic roller to rotate, and a material baffle plate for receiving the product; the front end of the material baffle plate is wrapped around the outside of the magnetic roller, and the rear end of the material baffle plate extends in a direction away from the magnetic roller. Specifically, the products processed by the heat treatment furnace are often made of metal, so the products and carbon slag can be separated by magnetic force. The product and carbon slag fall from the oil tank lifting mesh belt, and the product is attracted by the magnetic force of the magnetic roller and rotates to the rear end of the material baffle plate and falls, while the carbon slag falls in advance under the action of gravity, so that the product and the carbon slag fall at different positions, thereby separating the carbon slag and the product. In this way, the utility model can separate the carbon slag from the product and avoid product defects caused by the combustion of carbon slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the partial structure of the heat treatment furnace provided in the embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] See also Figure 1 , shows a carbon slag separation device 100 of a heat treatment furnace 1000 provided in the first embodiment of the utility model, the heat treatment furnace 1000 includes an oil tank lifting mesh belt 1100 for transporting carbon slag and products, including:

[0024] The magnetic unit 10 is located below the rear end of the oil tank lifting mesh belt 1100, and includes a magnetic roller 11, a driving machine for driving the magnetic roller 11 to rotate, and a baffle plate 12 for receiving the product;

[0025] The front end of the material baffle plate 12 is wrapped around the outer side of the magnetic roller 11 , and the rear end of the material baffle plate 12 extends in a direction away from the magnetic roller 11 .

[0026] In this embodiment, after the product undergoes the quenching process, the product and the carbon slag in the quenching oil tank will be transported through the oil tank lifting mesh belt 1100, and fall freely when reaching the rear end of the oil tank lifting mesh belt 1100. The magnetic unit 10 arranged below the rear end of the oil tank lifting mesh belt 1100 can receive the product. The product processed by the heat treatment furnace 1000 is made of metal, and optionally, the product is a bolt, a screw or a nut. Thus, the product and the carbon slag can be separated by magnetic force. When the product and the carbon slag fall from the oil tank lifting mesh belt 1100, the magnetic force generated by the magnetic roller 11 attracts the product to the baffle plate 12, and the carbon slag continues to fall under the action of gravity. The product is attracted by the magnetic force of the rotating magnetic roller 11, so that it rotates along the outer side of the baffle plate 12. When it rotates to the rear end of the baffle plate 12, since the rear end of the baffle plate 12 extends in a direction away from the magnetic roller 11, the magnetic force on the product gradually weakens, resulting in the product finally falling at the rear end of the baffle plate 12. As a result, the product and the carbon slag fall at different positions, and the carbon slag and the product can be separated. Optionally, when the rear end of the baffle plate 12 is located on the right side of the magnetic roller 11 and extends to the right, the driving machine drives the magnetic roller 11 to rotate counterclockwise, and vice versa. And the position of the magnetic unit 10 can be set according to the position where the product and the carbon slag fall freely from the rear end of the oil tank lifting mesh belt 1100. When the rear end of the baffle plate 12 is located on the right side of the magnetic roller 11, the product and the carbon slag can fall on the left half of the magnetic unit 10, which is convenient for the carbon slag to slide directly from the baffle plate 12 and is different from the falling position of the product.

[0027] As an optional embodiment, the carbon slag separation device 100 of the heat treatment furnace 1000 also includes a slag receiving plate 20, which is located below the magnetic unit 10 and is set corresponding to the position where the carbon slag falls, and is used to receive the carbon slag falling from the baffle plate 12.

[0028] Optionally, a through hole is provided at the bottom of the slag receiving pan 20, and a wire mesh made of stainless steel is covered on the bottom of the slag receiving pan 20. If the product is washed by a washing machine 40, the sewage falling on the slag receiving pan 20 can flow away from the through hole, the diameter of the through hole can be optionally set to 3 mm, and the wire mesh is a 50-mesh stainless steel wire mesh to prevent carbon slag from falling from the through hole.

[0029] As an optional embodiment, the carbon slag separation device 100 of the heat treatment furnace 1000 further includes a demagnetization unit 30, which is located below the rear end of the baffle plate 12, and includes a demagnetizer 31 and a conveyor belt 32 for receiving products dropped from the baffle plate 12;

[0030] The conveying direction of the conveyor belt 32 is from front to back, and the demagnetizer 31 is arranged at the rear end of the conveyor belt 32. The conveyor belt 32 conveys the product through the demagnetizer 31, and the demagnetizer 31 is used to demagnetize the product to make it lose its magnetism, and finally the product falls from the conveyor belt 32.

[0031] As an optional embodiment, the carbon slag separation device 100 of the heat treatment furnace 1000 further includes a washing machine 40 for washing the product on the baffle plate 12. The washing machine 40 can be a water curtain of a water distributor, which can wash impurities on the product. The specific setting position of the washing machine 40 is not limited, as long as the product can be washed. Optionally, the washing machine 40 is set above the magnetic unit 10.

[0032] As an optional embodiment, the carbon slag separation device 100 of the heat treatment furnace 1000 further includes a receiving hopper 50, which is arranged between the oil tank lifting mesh belt 1100 and the magnetic unit 10;

[0033] An inlet is provided above the receiving hopper 50 , and its position corresponds to the rear end of the oil tank lifting mesh belt 1100 . An outlet is provided below the receiving hopper 50 , and its position corresponds to the position of the material blocking plate 12 .

[0034] In this embodiment, the receiving hopper 50 can guide the carbon residue and the product to fall to a predetermined position of the baffle plate 12 to prevent the carbon residue and the product from falling from other positions.

[0035] See also Figure 1 , showing a heat treatment furnace 1000 provided in the second embodiment of the utility model, including an oil tank lifting mesh belt 1100 and a cleaning water tank 1200 for conveying products with carbon slag on the belt 32, and also including a carbon slag separation device 100 of the heat treatment furnace 1000 of any of the above items, the carbon slag separation device 100 of the heat treatment furnace 1000 is arranged below the oil tank lifting mesh belt 1100 and above the cleaning water tank 1200.

[0036] It should be noted that the carbon slag separation device 100 of the heat treatment furnace 1000 provided in the embodiment of the utility model has the same specific implementation and technical effects as those of the aforementioned embodiments. For the sake of brief description, for parts not mentioned in this embodiment, reference may be made to the corresponding contents in the aforementioned embodiments.

[0037] As an optional embodiment, the heat treatment furnace 1000 further includes a water tank lifting mesh belt 1300 disposed on the cleaning water tank 1200 for transferring the product in the cleaning water tank 1200 to the tempering furnace.

[0038] In summary, in an embodiment of the utility model, a carbon slag separation device for a heat treatment furnace is provided, the heat treatment furnace includes an oil tank lifting mesh belt for transmitting carbon slag and products, and the carbon slag separation device for the heat treatment furnace includes: a magnetic unit, located below the rear end of the oil tank lifting mesh belt, which includes a magnetic roller, a driving machine for driving the magnetic roller to rotate, and a baffle plate for receiving the product; the front end of the baffle plate is wrapped around the outside of the magnetic roller, and the rear end of the baffle plate extends in a direction away from the magnetic roller. Specifically, the products processed by the heat treatment furnace are often made of metal, so that the products and carbon slag can be separated by magnetic force. The product and carbon slag fall from the oil tank lifting mesh belt, and the product is attracted by the magnetic force of the magnetic roller and rotates to the rear end of the baffle plate and falls, while the carbon slag falls in advance under the action of gravity, so that the product and the carbon slag fall at different positions, thereby separating the carbon slag from the product. In this way, the utility model can separate the carbon slag from the product and avoid product defects caused by the combustion of carbon slag.

[0039] It should also be pointed out that the terms used in the present invention, such as “left”, “right”, “front”, “back”, etc., to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0040] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A carbon slag separation device for a heat treatment furnace, the heat treatment furnace comprising an oil tank lifting mesh belt for transporting carbon slag and products, characterized in that: include: A magnetic unit, located below the rear end of the oil tank lifting mesh belt, comprises a magnetic roller, a driving machine for driving the magnetic roller to rotate, and a baffle plate for receiving the product; The front end of the material baffle plate is wrapped around the outer side of the magnetic roller, and the rear end of the material baffle plate extends in a direction away from the magnetic roller.

2. The carbon slag separation device for a heat treatment furnace according to claim 1, characterized in that: It also includes a slag receiving pan, which is located below the magnetic unit.

3. The carbon slag separation device for a heat treatment furnace according to claim 2, characterized in that: A through hole is provided at the bottom of the slag receiving pan, and the bottom of the slag receiving pan is covered with a wire mesh made of stainless steel.

4. The carbon slag separation device for a heat treatment furnace according to claim 1, characterized in that: Also included is a demagnetization unit, located below the rear end of the baffle plate, which includes a demagnetization machine and a conveyor belt for receiving products dropped from the baffle plate; The conveying direction of the conveying belt is from front to back, and the demagnetizing machine is arranged at the rear end of the conveying belt.

5. The carbon slag separation device for a heat treatment furnace according to claim 1, characterized in that: Also included is a rinser for rinsing the product on the baffle plate.

6. The carbon slag separation device for a heat treatment furnace according to claim 1, characterized in that: It also includes a material receiving hopper, which is arranged between the oil tank lifting mesh belt and the magnetic unit; An inlet is provided above the receiving hopper, the position of which corresponds to the position of the rear end of the oil tank lifting mesh belt, and an outlet is provided below the receiving hopper, the position of which corresponds to the position of the baffle plate.

7. The carbon slag separation device for a heat treatment furnace according to claim 1, characterized in that: The product is a bolt, a screw or a nut.

8. A heat treatment furnace, comprising an oil tank lifting mesh belt for conveying products with carbon slag and a cleaning water tank, characterized in that: It also includes the carbon slag separation device of the heat treatment furnace according to any one of claims 1 to 7, wherein the carbon slag separation device of the heat treatment furnace is arranged below the oil tank lifting mesh belt and above the cleaning water tank.

9. The heat treatment furnace according to claim 8, characterized in that: It also includes a water tank lifting mesh belt arranged on the cleaning water tank, which is used to transfer the product in the cleaning water tank to the tempering furnace.

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