An oil vapor volatilization suppression device

Abstract

This invention provides an oil vapor evaporation suppression device, belonging to the field of heat treatment technology. The oil vapor evaporation suppression device includes: a heating chamber, an intermediate chamber, a quenching chamber, a sealing door assembly, an exhaust port, a first vacuum regulating unit, a second vacuum regulating unit, and a third vacuum regulating unit. The device ensures that the pressure in the intermediate chamber is greater than the pressure in the heating chamber and the quenching chamber, thereby preventing gas from the heating chamber from flowing into the intermediate chamber, and also preventing oil vapor from the quenching chamber from flowing into the intermediate chamber. This creates a barrier zone within the intermediate chamber to prevent oil vapor from the quenching chamber from flowing into the heating chamber, thus preventing oil vapor from corroding and contaminating conductive and insulating components in the heating chamber, improving equipment reliability, and extending the product's service life.

Description

Technical Field

[0001] This invention belongs to the field of heat treatment technology, specifically relating to an oil vapor volatilization suppression device. Background Technology

[0002] In related technologies, vacuum furnaces are key equipment for the heat treatment of metallic materials, widely used in aerospace, precision machinery, and automotive manufacturing. By heating and quenching workpieces in a vacuum environment, they effectively prevent oxidation and decarburization, ensuring the surface quality and mechanical properties of the workpieces. In the vacuum oil quenching heat treatment process, after the workpiece is heated in the heating chamber, it enters the quenching chamber and comes into contact with quenching oil. During the quenching process, a large amount of oil vapor is generated. Under vacuum conditions, this oil vapor will evaporate and diffuse irregularly within the furnace body, not only contaminating the internal components of the heating chamber and intermediate chamber, reducing the heating efficiency of the heating element, and affecting the sealing and insulation performance of the furnace body, but also forming oil stains on the surface of the workpiece, affecting the quenching quality and subsequent machining accuracy.

[0003] In existing technologies, such as Figure 1 As shown, the two ends of the intermediate chamber 11' are connected to the heating chamber 10' and the quenching chamber 12', respectively. After the workpiece 17' is heated to a predetermined temperature by the heating component 15' in the heating chamber 10', the sealing door component 13' and the insulating door component 16' are opened first, allowing the workpiece 17' to pass through the intermediate chamber 11' and enter the quenching chamber 12'. During the quenching process, the workpiece 17' located in the quenching chamber 12' will generate a large amount of oil vapor. At this time, the exhaust port 14' is opened, and some oil vapor will be discharged from the exhaust port. However, some oil vapor will still diffuse into the intermediate chamber 11' and the heating chamber 10', thereby corroding and contaminating the components in the heating chamber 10', thus reducing the service life of the product. Summary of the Invention

[0004] To address the issue in existing technologies where some oil vapor still diffuses into the intermediate and heating chambers, causing corrosion and contamination of components in the heating chamber and thus reducing product lifespan, this invention provides an oil vapor evaporation suppression device. This device employs a pressure control mechanism where the pressure in the quenching chamber is greater than that in the intermediate chamber, and vice versa. This allows air to flow from both chambers into the intermediate and quenching chambers, creating a barrier zone within the intermediate chamber to prevent oil vapor from the quenching chamber from flowing into the heating chamber. This prevents corrosion and contamination of components in the heating chamber, thereby extending product lifespan. The specific technical solution is as follows: An oil vapor evaporation suppression device includes: a heating chamber, an intermediate chamber, a quenching chamber, a sealing door assembly, an exhaust port, a first vacuum regulating unit, a second vacuum regulating unit, and a third vacuum regulating unit. The heating chamber is a hollow cavity. The intermediate chamber is a hollow cavity located on one side of the heating chamber and connected to it. The quenching chamber is located on the side of the intermediate chamber away from the heating chamber and connected to it. The sealing door assembly is installed at the connection between the quenching chamber and the intermediate chamber. The exhaust port is located on the side wall of the quenching chamber. The first vacuum regulating unit is installed in the heating chamber. The second vacuum regulating unit is installed in the intermediate chamber. The third vacuum regulating unit is installed in the quenching chamber. The pressure in the quenching chamber is lower than the pressure in the intermediate chamber, and the pressure in the intermediate chamber is higher than the pressure in the heating chamber.

[0005] In addition, the oil vapor volatilization suppression device in the above-mentioned technical solution provided by the present invention may also have the following additional technical features: In the above technical solution, the oil vapor volatilization suppression device further includes: a heating component and an insulation door component; the heating component is installed in the heating chamber; the insulation door component is installed in the intermediate chamber.

[0006] In the above technical solution, the oil vapor volatilization suppression device further includes: a first pressure detection unit, a second pressure detection unit, and a third pressure detection unit; the first pressure detection unit is installed in the heating chamber; the second pressure detection unit is installed in the intermediate chamber; and the third pressure detection unit is installed in the quenching chamber.

[0007] In the above technical solution, the oil vapor volatilization suppression device further includes: a first jet port and a compressed gas injection assembly; the first jet port is disposed on the side wall of the quenching chamber and is opposite to the exhaust port; the compressed gas injection assembly is located on the outside of the intermediate chamber, the compressed gas injection assembly is connected to the first jet port, and the compressed gas injection assembly is connected to the gas source; wherein, the gas in the gas source is an inert gas.

[0008] In the above technical solution, the oil vapor volatilization suppression device further includes: a second jet port and an on / off valve; the two second jet ports are respectively arranged on the two side walls of the intermediate chamber, the two second jet ports are arranged opposite each other, and the two second jet ports are located on the side of the sealing door assembly closer to the quenching chamber; the two on / off valves are respectively installed on the two second jet ports, and the two on / off valves are simultaneously connected to the compressed gas injection assembly.

[0009] In the above technical solution, the gas in the gas source is argon or a mixture of nitrogen and argon.

[0010] In the above technical solution, the oil vapor volatilization suppression device also includes: a vacuum pump group; the vacuum pump group is located outside the quenching chamber and is connected to the exhaust port.

[0011] In the above technical solution, the pressure in the quenching chamber is 0.133–13.3 Pa; the pressure in the intermediate chamber is 1 × 10⁻⁶ Pa. 0 ~1×10²Pa; the pressure inside the heating chamber is 0.133~13.3Pa.

[0012] The oil vapor volatilization suppression device of the present invention has the following advantages compared with the prior art: 1. By installing a first vacuum regulating unit in the heating chamber, a second vacuum regulating unit in the intermediate chamber, and a third vacuum regulating unit in the quenching chamber, the first vacuum regulating unit can regulate the pressure in the heating chamber, the second vacuum regulating unit can regulate the pressure in the intermediate chamber, and the third vacuum regulating unit can regulate the pressure in the quenching chamber. Simultaneously, the pressure in the intermediate chamber is greater than that in the heating chamber and the quenching chamber, respectively. This prevents gas from the heating chamber from flowing into the intermediate chamber, and also prevents oil vapor from the quenching chamber from flowing into the intermediate chamber. This creates a barrier zone in the intermediate chamber, preventing oil vapor from the quenching chamber from flowing into the heating chamber. This, in turn, prevents oil vapor from corroding or contaminating conductive and insulating components in the heating chamber, or causing short-circuit discharge, thereby improving equipment reliability and extending product lifespan.

[0013] 2. By installing the heat insulation door assembly in the intermediate cavity, the heat insulation door assembly can seal the interior of the intermediate cavity, thereby preventing heat from flowing into the quenching cavity from the heating cavity, thus preventing heat loss from the heating cavity and improving the heating efficiency of the heating assembly on the workpiece.

[0014] 3. By installing the first pressure detection unit in the heating chamber, the first pressure detection unit can detect the pressure in the heating chamber, thereby facilitating the first vacuum regulation unit to accurately control the pressure in the heating chamber and improve the user experience; by installing the second pressure detection unit in the intermediate chamber, the second pressure detection unit can detect the pressure in the intermediate chamber, thereby facilitating the second vacuum regulation unit to accurately control the pressure in the intermediate chamber and improve the user experience; by installing the third pressure detection unit in the quenching chamber, the third pressure detection unit can detect the pressure in the quenching chamber, thereby facilitating the third vacuum regulation unit to accurately control the pressure in the quenching chamber and improve the user experience.

[0015] 4. By setting the gas in the gas source to an inert gas, the gas injected into the quenching chamber through the first jet nozzle is an inert gas. This inert gas isolates the oil vapor from the components inside the quenching chamber, preventing contamination and corrosion. Simultaneously, it creates a protective atmosphere on the workpiece surface, preventing secondary oxidation during quenching and improving the quality and surface finish of the heat treatment. Furthermore, by aligning the first jet nozzle with the exhaust port, a directional airflow is created, driving the oil vapor towards the exhaust port and improving its efficiency. This also prevents oil vapor from flowing back into the heating chamber, enhancing the user experience.

[0016] 5. By arranging the two second jet nozzles opposite each other and placing them on the side of the sealing door assembly closer to the quenching chamber, the gas flowing in through the two second jet nozzles can form an airflow barrier, thereby blocking the oil vapor in the quenching chamber and preventing oil vapor from flowing into the side of the sealing door assembly closer to the heating chamber, thus further preventing oil vapor from flowing into the heating chamber and improving the user experience of the product.

[0017] 6. By setting the gas in the gas source to argon or a mixture of nitrogen and argon, the gas can protect the components in the quenching chamber, thereby preventing oil vapor from contaminating and corroding the components in the quenching chamber.

[0018] 7. By placing the vacuum pump unit outside the quenching chamber and connecting it to the exhaust port, the vacuum pump unit can extract oil vapor from the quenching chamber through the exhaust port, thereby improving the oil vapor outflow efficiency. This allows the pumping speed of the vacuum pump unit to be adjusted according to the amount of oil vapor generated, thus improving the applicability of the product. Attached Figure Description

[0019] Figure 1 A schematic diagram of a structure in existing technology that does not include an oil vapor volatilization suppression device; in, Figure 1 The correspondence between the reference numerals and component names in the attached drawings is as follows: 10' Heating chamber, 11' Intermediate chamber, 12' Quenching chamber, 13' Sealing door assembly, 14' Exhaust port, 15' Heating assembly, 16' Insulation door assembly, 17' Workpiece.

[0020] Figure 2 This is one of the structural schematic diagrams of an oil vapor volatilization suppression device according to the present invention. Figure 3 This is a second schematic diagram of the structure of an oil vapor volatilization suppression device according to the present invention. in, Figure 2 and Figure 3The correspondence between the reference numerals and component names in the attached drawings is as follows: 10 Heating chamber, 11 Intermediate chamber, 12 Quenching chamber, 13 Sealing door assembly, 14 Exhaust port, 15 Heating assembly, 16 Insulation door assembly, 17 First jet port, 18 Compressed gas injection assembly, 19 Second jet port, 20 Opening and closing valve, 21 Workpiece. Detailed Implementation

[0021] The following are specific implementation cases and appendices. Figure 2 and Figure 3 The present invention will be further described, but the present invention is not limited to these embodiments.

[0022] An oil vapor evaporation suppression device, such as Figure 2 and Figure 3 As shown, the oil vapor evaporation suppression device includes: a heating chamber 10, an intermediate chamber 11, a quenching chamber 12, a sealing door assembly 13, an exhaust port 14, a first vacuum regulating unit, a second vacuum regulating unit, and a third vacuum regulating unit; the heating chamber 10 is a hollow cavity; the intermediate chamber 11 is a hollow cavity, located on one side of the heating chamber 10, and connected to the heating chamber 10; the quenching chamber 12 is located on the side of the intermediate chamber 11 away from the heating chamber 10, and the quenching... The quenching chamber 12 is connected to the intermediate chamber 11; the sealing door assembly 13 is installed at the connection between the quenching chamber 12 and the intermediate chamber 11; the exhaust port 14 is provided on the side wall of the quenching chamber 12; the first vacuum regulating unit is installed in the heating chamber 10; the second vacuum regulating unit is installed in the intermediate chamber; and the third vacuum regulating unit is installed in the quenching chamber 12; wherein, the pressure in the quenching chamber 12 is less than the pressure in the intermediate chamber 11, and the pressure in the intermediate chamber 11 is greater than the pressure in the heating chamber 10.

[0023] By placing the intermediate chamber 11 on one side of the heating chamber 10 and connecting the intermediate chamber 11 to the heating chamber 10, the intermediate chamber 11 and the heating chamber 10 are connected together, thereby enabling the workpiece 21 in the heating chamber 10 to move into the intermediate chamber 11; by placing the quenching chamber 12 on the side of the intermediate chamber 11 away from the heating chamber 10 and connecting the quenching chamber 12 to the intermediate chamber 11, the quenching chamber 12 and the intermediate chamber 11 are connected, thereby enabling the workpiece 21 in the intermediate chamber to move into the quenching chamber 12; by installing the sealing door assembly 13 at the connection between the quenching chamber 12 and the intermediate chamber 11, the sealing door assembly 13 controls the connection or closure of the quenching chamber 12 and the intermediate chamber 11. By placing the exhaust port 14 on the side wall of the quenching chamber 12, the gas inside the quenching chamber 12 can be discharged through the exhaust port 14; by installing the first vacuum regulating unit inside the heating chamber 10, the first vacuum regulating unit can regulate the pressure inside the heating chamber 10; by installing the second vacuum regulating unit inside the intermediate chamber 11, the second vacuum regulating unit can regulate the pressure inside the intermediate chamber 11; by installing the third vacuum regulating unit inside the quenching chamber 12, the third vacuum regulating unit can regulate the pressure inside the quenching chamber 12. The pressure within chamber 2 is controlled by ensuring that the pressure inside the quenching chamber 12 is lower than the pressure inside the intermediate chamber 11, and that the pressure inside the intermediate chamber 11 is higher than the pressure inside the heating chamber 10. This prevents gas from flowing from the heating chamber 10 into the intermediate chamber 11, and also prevents oil vapor from flowing from the quenching chamber 12 into the intermediate chamber 11. This avoids oil vapor from corroding or contaminating the conductive and insulating components inside the heating chamber 10, or causing short circuits, thus improving equipment reliability and extending product lifespan.

[0024] In actual use of the product, firstly, the workpiece 21 is placed in the heating chamber 10 and heated, with the sealing door assembly 13 in the closed state; simultaneously, the first vacuum regulating unit, the second vacuum regulating unit, and the third vacuum regulating unit are activated to make the pressure in the quenching chamber 12 less than the pressure in the intermediate chamber 11, and the pressure in the intermediate chamber 11 greater than the pressure in the heating chamber 10; after the workpiece 21 is heated to the predetermined temperature, the sealing door assembly 13 is opened; then, the workpiece 21 is moved so that it passes through the intermediate chamber 11 and enters the quenching chamber 12, and the sealing door assembly 13 is closed; then, another workpiece 21 is placed in the heating chamber 10; then, the spray mechanism in the quenching chamber 12 is activated, so that the spray mechanism sprays quenching oil onto the workpiece 21 in the quenching chamber 12, thereby cooling the workpiece 21; when the cooling oil is sprayed onto the workpiece 21... When heated, a large amount of oil vapor will be generated; at the same time, the workpiece 21 in the heating chamber 10 will be heated; when the workpiece 21 in the heating chamber 10 is heated to the predetermined temperature and the workpiece 21 in the quenching chamber 12 is cooled, the sealing door assembly 13 is opened to remove the workpiece 21 in the quenching chamber 12 and to move the workpiece 21 in the heating chamber 10 to the quenching chamber 12 through the intermediate chamber 11; at the same time, the exhaust port 14 is opened to allow the oil vapor in the quenching chamber 12 to be discharged from the exhaust port 14; moreover, since the pressure in the quenching chamber 12 is less than the pressure in the intermediate chamber 11 and the pressure in the intermediate chamber 11 is greater than the pressure in the heating chamber 10, the air in the heating chamber 10 cannot flow into the intermediate chamber 11, and the oil vapor in the quenching chamber 12 cannot flow into the intermediate chamber 11, thereby preventing the oil vapor in the quenching chamber 12 from flowing into the heating chamber 10.

[0025] By employing the above structure, the first vacuum regulating unit is installed in the heating chamber 10, the second vacuum regulating unit is installed in the intermediate chamber 11, and the third vacuum regulating unit is installed in the quenching chamber 12. This allows the first vacuum regulating unit to regulate the pressure in the heating chamber 10, the second vacuum regulating unit to regulate the pressure in the intermediate chamber 11, and the third vacuum regulating unit to regulate the pressure in the quenching chamber 12. Simultaneously, the pressure in the intermediate chamber 11 is greater than that in the heating chamber 10 and the quenching chamber 12, preventing gas from flowing into the intermediate chamber 11 and oil vapor from the quenching chamber 12 from flowing into it. This creates a barrier zone within the intermediate chamber 11, preventing oil vapor from flowing into the heating chamber 10 and thus avoiding corrosion and contamination of the conductive and insulating components in the heating chamber 10. This improves equipment reliability and extends product lifespan. In embodiments of the present invention, such as... Figure 2 and Figure 3As shown, the oil vapor evaporation suppression device also includes: a heating component 15 and an insulated door component 16; the heating component 15 is installed in the heating chamber 10; and the insulated door component 16 is installed in the intermediate chamber 11.

[0026] By installing the heating component 15 inside the heating chamber 10, the heating component 15 can heat the workpiece 21 placed inside the heating chamber 10. By installing the door insulation component 16 inside the intermediate chamber 11, the door insulation component 16 can seal the interior of the intermediate chamber 11, thereby preventing heat from flowing into the quenching chamber 12 from the heating chamber 10, thus preventing heat loss from the heating chamber 10 and improving the heating efficiency of the heating component 15 on the workpiece 21.

[0027] In embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the oil vapor evaporation suppression device further includes: a first pressure detection unit, a second pressure detection unit, and a third pressure detection unit; the first pressure detection unit is installed in the heating chamber 10; the second pressure detection unit is installed in the intermediate chamber 11; and the third pressure detection unit is installed in the quenching chamber 12.

[0028] By installing the first pressure detection unit inside the heating chamber 10, the first pressure detection unit can detect the pressure inside the heating chamber 10, thereby facilitating the first vacuum regulation unit to accurately control the pressure inside the heating chamber 10 and improve the user experience. By installing the second pressure detection unit inside the intermediate chamber 11, the second pressure detection unit can detect the pressure inside the intermediate chamber 11, thereby facilitating the second vacuum regulation unit to accurately control the pressure inside the intermediate chamber 11 and improve the user experience. By installing the third pressure detection unit inside the quenching chamber 12, the third pressure detection unit can detect the pressure inside the quenching chamber 12, thereby facilitating the third vacuum regulation unit to accurately control the pressure inside the quenching chamber 12 and improve the user experience.

[0029] In embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the oil vapor evaporation suppression device further includes: a first jet port 17 and a compressed gas injection assembly 18; the first jet port 17 is disposed on the side wall of the quenching chamber 12 and is opposite to the exhaust port 14; the compressed gas injection assembly 18 is located outside the intermediate chamber 11, the compressed gas injection assembly 18 is connected to the first jet port 17, and the compressed gas injection assembly 18 is connected to the gas source; wherein, the gas in the gas source is an inert gas.

[0030] By setting the first jet nozzle 17 on the side wall of the quenching chamber 12, connecting the compressed gas injection assembly to the first jet nozzle 17, and connecting the compressed gas injection assembly 18 to the gas source, the compressed gas injection assembly 18 can compress the gas from the gas source and inject it into the quenching chamber 12 through the first jet nozzle 17. By setting the gas in the gas source to an inert gas, the gas injected into the quenching chamber 12 through the first jet nozzle 17 is an inert gas. This allows the inert gas to separate the oil vapor from the components in the quenching chamber 12, preventing the oil vapor from contaminating and corroding the components in the quenching chamber 12. At the same time, it can also form a protective atmosphere on the surface of the workpiece 21, thereby preventing secondary oxidation of the workpiece 21 during the quenching process and improving the heat treatment quality and surface finish of the workpiece 21. Furthermore, by positioning the first jet nozzle 17 opposite to the exhaust port 14, the gas flowing out through the first jet nozzle 17 can form a directional airflow, thereby driving the oil vapor to flow towards the exhaust port, thus improving the efficiency of oil vapor outflow and preventing oil vapor from flowing towards the heating chamber 10, thereby improving the user experience of the product.

[0031] In embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the oil vapor evaporation suppression device further includes: a second jet port 19 and an on / off valve 20; the two second jet ports 19 are respectively disposed on the two side walls of the intermediate chamber, the two second jet ports 19 are arranged opposite each other, and the two second jet ports 19 are located on the side of the sealing door assembly 13 near the quenching chamber 12; the two on / off valves 20 are respectively installed on the two second jet ports 19, and the two on / off valves 20 are simultaneously connected to the compressed gas injection assembly 18.

[0032] By setting two second jet ports 19 on the two side walls of the intermediate chamber respectively, and installing two on / off valves 20 on the two second jet ports 19 respectively, and connecting the two on / off valves 20 to the compressed gas injection assembly 18 simultaneously, the on / off valves 20 can control the flow or closure between the compressed gas injection assembly 18 and the second jet ports 19, thereby controlling whether the compressed gas injection assembly 18 injects gas into the intermediate chamber 11 through the second jet ports 19; by setting the two second jet ports 19 opposite to each other and placing the two second jet ports 19 on the side of the sealing door assembly 13 near the quenching chamber 12, the gas flowing in through the two second jet ports 19 can form an airflow barrier, thereby blocking the oil vapor in the quenching chamber 12, preventing the oil vapor from flowing into the side of the sealing door assembly 13 near the heating chamber 10, and further preventing the oil vapor from flowing into the heating chamber 10, thus improving the user experience of the product.

[0033] In embodiments of the present invention, the gas in the gas source is argon or a mixture of nitrogen and argon.

[0034] By setting the gas in the gas source to argon or a mixture of nitrogen and argon, the gas can protect the components in the quenching chamber 12, thereby preventing oil vapor from contaminating and corroding the components in the quenching chamber 12.

[0035] In embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the oil vapor evaporation suppression device also includes a vacuum pump group; the vacuum pump group is located outside the quenching chamber 12 and is connected to the exhaust port 14.

[0036] By placing the vacuum pump unit outside the quenching chamber 12 and connecting the vacuum pump unit to the exhaust port 14, the vacuum pump unit can extract the oil vapor from the quenching chamber 12 through the exhaust port 14, thereby improving the oil vapor outflow efficiency. This allows the pumping speed of the vacuum pump unit to be adjusted according to the amount of oil vapor generated, thus improving the applicability of the product.

[0037] In an embodiment of the present invention, the pressure in the quenching chamber 12 is 0.133–13.3 Pa; the pressure in the intermediate chamber 11 is 1 × 10⁻⁶ Pa. 0 ~1×10²Pa; the pressure inside the heating chamber 10 is 0.133~13.3Pa.

[0038] In the description of this invention, the term "a plurality of" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0039] In the description of this invention, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this invention, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An oil vapor emission inhibiting device characterized by comprising: The oil vapor volatilization suppression device includes: Heating chamber, wherein the heating chamber is a hollow cavity; An intermediate chamber, which is a hollow cavity, is located on one side of the heating chamber and is connected to the heating chamber. A quenching chamber is located on the side of the intermediate chamber away from the heating chamber, and the quenching chamber is connected to the intermediate chamber; A sealing door assembly is installed at the connection between the quenching chamber and the intermediate chamber; An exhaust port is provided on the side wall of the quenching chamber; A first vacuum conditioning unit is installed inside the heating chamber; A second vacuum regulating unit is installed in the intermediate cavity; A third vacuum regulating unit is installed inside the quenching chamber; The pressure inside the quenching chamber is lower than the pressure inside the intermediate chamber, and the pressure inside the intermediate chamber is higher than the pressure inside the heating chamber.

2. An oil vapour emission suppression device according to claim 1, wherein The oil vapor volatilization suppression device also includes: A heating assembly, which is installed within the heating chamber; An insulated door assembly is installed in the intermediate cavity.

3. An oil vapour emission suppression device according to claim 2, wherein The oil vapor volatilization suppression device also includes: A first pressure detection unit is installed inside the heating chamber; A second pressure detection unit is installed in the intermediate cavity; The third pressure detection unit is installed in the quenching chamber.

4. An oil vapour emission suppression device according to claim 1, wherein The oil vapor volatilization suppression device also includes: The first air jet is disposed on the side wall of the quenching chamber and is opposite to the exhaust port; A compressed gas injection assembly is located outside the intermediate chamber, is connected to the first jet port, and is connected to a gas source. The gas in the gas source is an inert gas.

5. An oil vapour emission suppression device according to claim 4, wherein The oil vapor volatilization suppression device also includes: The two second jet ports are respectively disposed on the two side walls of the intermediate chamber, the two second jet ports are disposed opposite each other, and the two second jet ports are located on the side of the sealing door assembly closer to the quenching chamber; Two opening and closing valves are respectively installed on two second jet ports, and both opening and closing valves are simultaneously connected to the compressed gas injection assembly.

6. The oil vapor volatilization suppression device according to claim 5, characterized in that: The gas in the gas source is argon or a mixture of nitrogen and argon.

7. The oil vapor volatilization suppression device according to claim 1, characterized in that, The oil vapor volatilization suppression device also includes: A vacuum pump assembly is located outside the quenching chamber and is connected to the exhaust port.

8. The oil vapor volatilization suppression device according to claim 1, characterized in that: The pressure inside the quenching chamber is 0.133–13.3 Pa; the pressure in the intermediate chamber is 1 x 10 0 ~ 1 x 10 Pa; The pressure inside the heating chamber is 0.133 to 13.3 Pa.

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