A quench oil fume collecting device for heat treatment

Abstract

The utility model belongs to heat treatment technical field relates to a heat treatment quenching oil fume collecting device, include: quenching oil groove, collection cover, air suction cover, blow cover, quenching oil groove, collection cover all are the groove type, collection cover is from above downwards and is buckled on quenching oil groove top, the distance from air suction cover lower bottom to quenching oil groove upper edge is greater than the height of the quenching piece, blow cover sets up around the outer wall of quenching oil groove, and the blowing direction of blow cover is towards the groove inner chamber of collection cover, and the blowing of blow cover is air curtain, and the air curtain of blow cover and groove inner chamber, quenching oil groove upper surface constitute a closed cavity that quenching workpiece is enclosed in, the utility model discloses a strong wind air curtain that blows out through blowing port and forms the closed space with collection cover, and the oil fume that quenching produces is enclosed in, therefore, the utility model discloses can effectively collect oil fume in the quenching process, prevents the oil fume pollution of heat treatment and spills over, protects the health safety of operating personnel, maintains the heat treatment environment not to be contaminated.

Description

Technical Field

[0001] This utility model belongs to the field of heat treatment technology and relates to a heat treatment quenching oil fume collection device. Background Technology

[0002] Heat treatment is a processing technique that alters the internal structure of metallic materials by heating, holding, and cooling them to obtain desired properties (such as hardness, strength, and toughness). Its core lies in adjusting the material's microstructure through temperature control, and it is widely used in machinery manufacturing, automotive, and aerospace industries. Common processes include annealing, normalizing, quenching, and tempering. Quenching is a crucial step in heat treatment, and its functions include: significantly improving the material's hardness and wear resistance; adjusting the material's overall properties in conjunction with tempering; and imparting specific properties to special steels, such as enhancing the ferromagnetism of permanent magnet steel. Quenching media include water, oil, brine, and air.

[0003] However, the quenching media in the heat treatment workshop will generate oil fume pollution during the heat treatment process, specifically including:

[0004] Chemical pollution occurs when oil-based media decompose at high temperatures, producing toxic and harmful gases such as polycyclic aromatic hydrocarbons (PAHs), benzene compounds, and sulfides, accompanied by the emission of particulate matter. Rust inhibitors or additives in water-based media may release volatile organic compounds (VOCs) such as ammonia and formaldehyde.

[0005] Particulate matter pollution occurs when oil evaporates at high temperatures to form fumes, and micron-sized particles (such as FeO and Fe3O4) generated from the oxidation of metal workpieces become suspended in the air. Salt spray may also be generated during quenching with molten salt or brine.

[0006] Safety and health hazards: Oil has a low flash point, and high-temperature operations may cause fires; oil fumes mixed with air pose an explosion risk. Long-term exposure to harmful gases or oil mists may lead to respiratory diseases, skin irritation, and even cancer risks for operators.

[0007] Therefore, reducing the oil fume pollution generated during the quenching process is crucial for protecting the environment and the safety and health of operators. Utility Model Content

[0008] The technical solution adopted by this utility model to solve the technical problem is: a heat treatment quenching oil fume collection device, including: a quenching oil tank, a collection hood, a suction hood, and a blowing hood. The quenching oil tank is a trough shape with the opening facing upward, and the collection hood is an inverted trough shape with the opening facing downward. The collection hood covers the quenching oil tank from top to bottom. The suction end of the suction hood is connected to the inner cavity of the tank of the collection hood, and the exhaust end of the suction hood is connected to the oil fume purification device. The distance from the bottom of the suction hood to the upper edge of the quenching oil tank is greater than the height of the workpiece to be quenched.

[0009] The blowing hood is set around the outer wall of the quenching oil tank. The blowing direction of the blowing hood is towards the inner cavity of the collection hood. The blowing of the blowing hood is an air curtain. The air curtain of the blowing hood, the inner cavity of the tank and the upper surface of the quenching oil tank form a sealed cavity that encloses the quenched workpiece.

[0010] Preferably, the blowing angle of the air outlet of the blower hood is adjustable.

[0011] More preferably, the quenching oil tank is rectangular.

[0012] More preferably, the blower hood is provided with multiple blowers, which are elongated and attached to the outer wall of the quenching oil tank. The blowing directions at the connection of two adjacent blowers overlap each other, and the air curtains at the connection of two adjacent blowers merge with each other.

[0013] Preferably, the opening of the suction hood faces the quenching oil tank from the side, the upper end of the opening of the suction hood is connected to the inner cavity of the collection hood, and the lower end of the opening of the suction hood is connected to the outer wall of the quenching oil tank.

[0014] Preferably, a control switch is provided outside the quenching oil tank, and the control switch is electrically connected to the suction hood and the blowing hood.

[0015] More preferably, the control switch is a foot switch.

[0016] Preferably, the quenching oil tank is provided with a slope, the top of the slope is connected to the upper edge of the quenching oil tank, and the bottom of the slope is connected to the external ground.

[0017] The beneficial effects of this utility model are:

[0018] This invention features air vents around the quenching oil tank, directed towards a collection hood. The strong airflow from the vents and the collection hood create a closed space, trapping the quenching fumes inside. The trapped fumes are then transported through a suction hood to a purifier for purification. Therefore, this invention effectively collects fumes during the quenching process, preventing the overflow of fumes from heat treatment, protecting the health and safety of operators, and maintaining a clean heat treatment environment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a heat treatment quenching oil fume collection device.

[0020] Among them, 1. Quenching oil tank; 2. Collection cover; 3. Suction cover; 4. Blowing cover; 5. Blowing outlet; 6. Control switch; 8. Slope. Detailed Implementation

[0021] The relevant technologies of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] refer to Figure 1 A heat treatment quenching oil fume collection device includes: a quenching oil tank 1, a collection hood 2, a suction hood 3, and a blowing hood 4. The quenching oil tank 1 is a trough-shaped tank with its opening facing upwards, and the collection hood 2 is an inverted trough-shaped tank with its opening facing downwards. The collection hood 2 covers the quenching oil tank 1 from top to bottom. The suction end of the suction hood 3 is connected to the inner cavity of the tank of the collection hood 2, and the exhaust end of the suction hood 3 is connected to an oil fume purification device. The distance from the bottom of the suction hood 3 to the upper edge of the quenching oil tank 1 is greater than the height of the workpiece to be quenched.

[0023] A blower hood 4 is installed around the outer wall of the quenching oil tank 1, with the airflow direction of the blower hood 4 directed towards the inner cavity of the collection hood 2. The blower hood 4 acts as an air curtain, and the air curtain, together with the inner cavity of the tank and the upper surface of the quenching oil tank 1, forms a sealed cavity that encloses the quenching workpiece. During quenching, the workpiece to be quenched can enter from any direction around the quenching oil tank 1. Simultaneously, a space larger than the height of the workpiece is reserved above the quenching oil tank 1, ensuring that the collection hood 2 collects the quenching oil fumes to the maximum extent when the workpiece comes into contact with the quenching medium. The fumes are then transported to a purifier for purification via pipeline.

[0024] Furthermore, the blowing angle of the blowing port 5 of the blowing hood 4 is adjustable; the angle of the blowing port 5 is adjustable within a small range above the quenching oil tank 1, so that the range of quenching oil fume collection can be adjusted according to the size of the workpiece to be quenched and the amount of quenching oil fume, thereby increasing the efficiency of collection and emission.

[0025] Furthermore, the quenching oil tank 1 is rectangular; the rectangular quenching oil tank 1 makes it easier to set up the air blower hood 4 around it, the air blower 5 is easy to install, and the air curtain is easier to form a closed environment.

[0026] Furthermore, the blower hood 4 is provided with multiple blower nozzles 5, which are elongated and attached to the outer wall of the quenching oil tank 1. The blowing directions at the connection of two adjacent blower nozzles 5 overlap; the air curtains at the connection of two adjacent blower nozzles 5 merge with each other. The elongated blower nozzles 5 are set outside the cuboid quenching oil tank 1. The blower nozzles 5 can be long slot-shaped air outlets. The air curtain is planar. The four planar air curtains surround the quenching oil tank 1. The cubic closed cavity can provide sufficient quenching space for the workpiece to be quenched. Moreover, the cubic closed space can more effectively transport the quenching oil fumes to the suction hood 3 for purification and discharge.

[0027] Furthermore, the opening of the suction hood 3 faces the quenching oil tank 1 from the side, the upper end of the opening of the suction hood 3 is connected to the inner cavity of the collection hood 2, and the lower end of the opening of the suction hood 3 is connected to the outer wall of the quenching oil tank 1.

[0028] Furthermore, the quenching oil tank 1 is equipped with a control switch 6, which is electrically connected to the suction hood 3 and the blowing hood 4. The control switch 6 is used to control the on / off state and size of the airflow of the suction hood 3 and the blowing hood 4. When quenching is required, the fan is turned on or the fan power is increased. When quenching is not required, the fan is turned off or the fan power is reduced.

[0029] Furthermore, the control switch 6 is a foot switch; it is convenient for operators to operate. When the operator is quenching with both hands, the foot pedal action can control the on / off state and size of the airflow of the suction hood 3 and the blowing hood 4.

[0030] Furthermore, a ramp 8 is provided outside the quenching oil tank 1. The top of the ramp 8 is connected to the upper edge of the quenching oil tank 1, and the bottom of the ramp 8 is connected to the external ground. The ramp 8 is used to drag the quenched workpiece from the quenching oil tank 1 to the outside of the quenching oil tank 1.

[0031] Example

[0032] The heat treatment quenching oil fume collection device in this embodiment first collects the generated oil fumes, and the collection hood 2 is designed as a blower-suction type. This heat treatment quenching oil fume collection device includes at least four hoods: one suction hood 3 is a semi-shell structure, and it is positioned above the quenching oil tank 1; at least three hoods are blower hoods 4, and the air outlets 5 of the blower hoods 4 can be adjusted at a small angle above the quenching oil tank 1; the three blower hoods 4 can form a closed space through an air curtain for the workpiece to enter and exit the inlet / outlet of the quenching oil tank 1. The workpiece can enter from any position around the quenching oil tank 1. Simultaneously, a space larger than the height of the quenched workpiece is reserved in the upper part of the quenching oil tank 1 to ensure maximum oil fume collection at the moment the quenched workpiece contacts the oil surface. The collected quenching oil fume is then sent to a purifier for purification through pipelines.

[0033] In summary, this invention, by setting air vents around the quenching oil tank and directing the air vents towards the collection hood, creates a closed space with the strong airflow from the air vents and the collection hood, effectively trapping the quenching fumes inside. The trapped fumes are then transported through a suction hood to a purifier for purification. Therefore, this invention effectively collects fumes during the quenching process, preventing the overflow of fumes from heat treatment, protecting the health and safety of operators, and maintaining a clean heat treatment environment. Thus, this invention has broad application prospects.

[0034] It should be emphasized that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A heat treatment quenching oil fume collection device, characterized in that, include: The quenching oil tank (1), collection cover (2), suction cover (3), and blowing cover (4) are provided. The quenching oil tank (1) is a groove with its opening facing upwards, and the collection cover (2) is an inverted groove with its opening facing downwards. The collection cover (2) covers the quenching oil tank (1) from top to bottom. The suction end of the suction cover (3) is connected to the inner cavity of the collection cover (2), and the exhaust end of the suction cover (3) is connected to the oil fume purification device. The distance from the bottom of the suction cover (3) to the upper edge of the quenching oil tank (1) is greater than the height of the workpiece to be quenched. The blower hood (4) is arranged around the outer wall of the quenching oil tank (1). The blowing direction of the blower hood (4) is towards the inner cavity of the collection hood (2). The blowing of the blower hood (4) is an air curtain. The air curtain of the blower hood (4), together with the inner cavity of the tank and the upper surface of the quenching oil tank (1), forms a sealed cavity that encloses the quenched workpiece.

2. The heat treatment quenching oil fume collection device according to claim 1, characterized in that, The blowing angle of the air outlet (5) of the blower hood (4) is adjustable.

3. The heat treatment quenching oil fume collection device according to claim 2, characterized in that, The quenching oil tank (1) is rectangular.

4. The heat treatment quenching oil fume collection device according to claim 3, characterized in that, The blower hood (4) is provided with a plurality of blower ports (5). The blower ports (5) are elongated and attached to the outer wall of the quenching oil tank (1). The blowing directions at the connection of two adjacent blower ports (5) overlap with each other.

5. The heat treatment quenching oil fume collection device according to claim 1, characterized in that, The opening of the suction hood (3) faces the quenching oil tank (1) from the side. The upper end of the opening of the suction hood (3) is connected to the inner cavity of the collection hood (2). The lower end of the opening of the suction hood (3) is connected to the outer wall of the quenching oil tank (1).

6. The heat treatment quenching oil fume collection device according to claim 1, characterized in that, The quenching oil tank (1) is equipped with a control switch (6), which is electrically connected to the suction hood (3) and the blowing hood (4).

7. The heat treatment quenching oil fume collection device according to claim 6, characterized in that, The control switch (6) is a foot switch.

8. The heat treatment quenching oil fume collection device according to claim 1, characterized in that, The quenching oil tank (1) is provided with a ramp (8), the top of the ramp (8) is connected to the upper edge of the quenching oil tank (1), and the bottom of the ramp (8) is connected to the external ground.

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