Vacuumizing oil steam diffusion prevention device

Abstract

The utility model discloses a vacuumizing oil steam diffusion prevention device, which relates to the technical field of vacuum coating and comprises a coating cabin, a sealing cabin cover arranged at the upper end of the coating cabin, an air exhaust pipeline connected onto the coating cabin, a vacuum pump connected onto the air exhaust pipeline, and an air exhaust component fixedly mounted in the coating cabin. The air exhaust assembly comprises an air exhaust opening fixedly formed in the coating cabin, a protruding pipe opening is fixedly formed in the middle of the bottom of the air exhaust opening, a flow guide cone is fixedly installed at the upper end of the protruding pipe opening, air exhaust holes are formed in the side wall of the protruding pipe opening, the bottom of the air exhaust opening is connected with an oil drainage pipeline, and an installation through hole is formed in the edge of the upper end of the air exhaust opening. A condensation mechanism is mounted at the upper end of the extraction opening. According to the vacuumizing oil vapor diffusion prevention device, the condensation mechanism can enable high-temperature oil molecules to be rapidly solidified on the surfaces of the heat conduction fins to restrain diffusion of the oil molecules, and the air exhaust assembly can conveniently discharge collected oil out of the coating cabin.

Description

Technical Field

[0001] This utility model relates to the field of vacuum coating technology, specifically a vacuum-assisted oil vapor diffusion prevention device. Background Technology

[0002] Vacuum coating technology is a process of coating material surfaces in a vacuum environment, widely used in optical devices, electronic components, decorative materials, and other fields. Its principle is to evaporate or sputter coating materials (such as metals, alloys, or compounds) under vacuum conditions using physical or chemical methods, causing them to deposit on the workpiece surface to form a thin film. This technology has advantages such as high film purity, strong adhesion, and controllable thickness, and can significantly improve the wear resistance, corrosion resistance, and optical properties of materials. Furthermore, vacuum coating technology is applicable to various materials, including metals, ceramics, and plastics, providing an effective solution for surface modification of materials in different industries.

[0003] In current coating processes, both suspension coating and drum coating equipment face a common problem: oil backflow from the diffusion pump. Specifically, this phenomenon refers to the incomplete removal of oil vapor from the diffusion pump during vacuum coating; some of it flows back into the vacuum and winding systems. This backflowing oil vapor contaminates the entire system, resulting in oil residue between the rollers during aluminum film deposition. This oil residue adheres to the base film surface, negatively impacting overall performance and appearance. Summary of the Invention

[0004] The purpose of this invention is to provide a vacuum-assisted oil vapor diffusion prevention device to solve the problem of high oil pollution risk in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum oil vapor diffusion prevention device, comprising a coating chamber, a sealed cover at the upper end of the coating chamber, an extraction pipe connected to the coating chamber, a vacuum pump connected to the extraction pipe, an extraction assembly fixedly installed inside the coating chamber, the extraction assembly including an extraction port fixedly installed inside the coating chamber, a protruding pipe fixedly installed at the bottom center of the extraction port, a guide cone fixedly installed at the upper end of the protruding pipe, an extraction hole opened on the side wall of the protruding pipe, an oil drain pipe connected to the bottom of the extraction port, an installation through hole opened at the upper edge of the extraction port, a condensation mechanism installed at the upper end of the extraction port, the condensation mechanism including a positioning ring fixedly installed inside the extraction port, a sealing ring provided at the bottom edge of the positioning ring, an installation screw hole opened on the positioning ring, a cooling coil fixedly installed inside the positioning ring, and heat-conducting fins fixedly installed on the cooling coil, the cooling coil can reduce the temperature of the heat-conducting fins.

[0006] Preferably, the bottom of the air extraction port is provided with an oil drain hole, the oil drain pipe is connected to the air extraction port through the oil drain hole, and a valve is connected to the end of the oil drain pipe.

[0007] Preferably, the bottom of the flow guide cone is provided with a docking groove, the flow guide cone is connected to the upper end of the protruding pipe opening through the docking groove, and the flow guide cone is aligned vertically with the cooling coil.

[0008] Preferably, one end of the suction pipe is connected to the protruding pipe opening, the other end of the suction pipe is connected to the vacuum pump, and the fixing bolt extends into the suction port through the mounting through hole.

[0009] Preferably, the positioning ring seat has an installation groove on its surface, and the sealing ring is installed on the positioning ring seat through the installation groove.

[0010] Preferably, the air extraction port has a notch, and both ends of the cooling coil extend out of the air extraction port through the notch.

[0011] Preferably, the fixing bolt is connected to the positioning ring seat through the mounting screw hole, the positioning ring seat is fixed inside the air extraction port by the fixing bolt, and the cooling coil is installed at the upper end of the air extraction port through the positioning ring seat.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this application, the temperature of the cooling coil can be reduced to a minimum of -120°C. During the process of the gas in the coating chamber being discharged through the exhaust pipe, the high-temperature oil molecules will come into contact with the -120°C cooling coil, causing the oil molecules to quickly solidify on the surface of the heat-conducting fins. This process effectively inhibits the diffusion of oil molecules and can capture water vapor in the chamber.

[0014] 2. In this application, the oil solidified on the surface of the heat-conducting fins will drip after melting. When the oil drips, the guide cone will guide the dripping oil to the bottom edge of the exhaust port, thereby preventing the oil from being sucked into the vacuum pump. After the oil is guided to the bottom edge of the exhaust port, the valve on the oil drain pipe can be opened, and the collected oil will then be discharged through the oil drain pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the air extraction component of this utility model;

[0018] Figure 4 This is a schematic diagram of the condensation mechanism of this utility model.

[0019] The following are the labeling elements in the diagram: 1. Sealed chamber cover; 2. Coated chamber body; 3. Evacuation pipe; 4. Vacuum pump; 5. Evacuation assembly; 501. Evacuation port; 502. Guide cone; 503. Oil drain hole; 504. Oil drain pipe; 505. Protruding pipe opening; 506. Evacuation hole; 507. Mounting through hole; 6. Condensation mechanism; 601. Positioning ring seat; 602. Cooling coil; 603. Heat-conducting fins; 604. Fixing bolt; 605. Mounting groove; 606. Mounting screw hole; 607. Sealing ring. Detailed Implementation

[0020] The technical solutions of the present 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 the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a vacuum oil vapor diffusion prevention device, including a coating chamber 2, a sealed cover 1 at the upper end of the coating chamber 2, an exhaust pipe 3 connected to the coating chamber 2, a vacuum pump 4 connected to the exhaust pipe 3, and an exhaust assembly 5 fixedly installed inside the coating chamber 2. The exhaust assembly 5 includes an exhaust port 501 fixedly installed inside the coating chamber 2, and a condensation mechanism 6 installed at the upper end of the exhaust port 501. The condensation mechanism 6 includes a positioning ring seat 601 fixedly installed inside the exhaust port 501, and a cooling coil 602 fixedly installed inside the positioning ring seat 601. The condensation mechanism 6 can make high-temperature oil molecules quickly solidify on the surface of the heat-conducting fins 603 to inhibit the diffusion of oil molecules. The exhaust assembly 5 can conveniently discharge the collected oil outside the coating chamber 2.

[0022] like Figure 2 and Figure 3 As shown, an air extraction assembly 5 is fixedly installed inside the coating chamber 2. The air extraction assembly 5 includes an air extraction port 501 fixedly installed inside the coating chamber 2. A protruding pipe port 505 is fixedly installed at the middle position of the bottom of the air extraction port 501. A guide cone 502 is fixedly installed at the upper end of the protruding pipe port 505. An air extraction hole 506 is opened on the side wall of the protruding pipe port 505. An oil drain pipe 504 is connected to the bottom of the air extraction port 501. An installation through hole 507 is opened at the upper edge of the air extraction port 501. An oil drain hole 503 is opened at the bottom of the air extraction port 501. The oil drain pipe 504 is connected to the air extraction port 501 through the oil drain hole 503, and a valve is connected to the end of the oil drain pipe 504. A docking groove is opened at the bottom of the guide cone 502. The guide cone 502 is connected to the upper end of the protruding pipe port 505 through the docking groove, and the guide cone 502 is vertically aligned with the cooling coil 602.

[0023] Specifically, the minimum temperature of the cooling coil 602 is -120℃. When the gas inside the coating chamber 2 is discharged through the exhaust pipe 3, the high-temperature oil molecules will encounter the -120℃ cooling coil 602, causing the high-temperature oil molecules to quickly solidify on the surface of the heat-conducting fins 603, thereby inhibiting the diffusion of oil molecules. At the same time, it can also capture water vapor in the chamber.

[0024] like Figure 2 and Figure 4 As shown, the condensation mechanism 6 includes a positioning ring seat 601 fixedly installed inside the exhaust port 501. A sealing ring 607 is provided at the bottom edge of the positioning ring seat 601. A mounting screw hole 606 is provided on the positioning ring seat 601. A fixing bolt 604 is provided in the mounting screw hole 606. A cooling coil 602 is fixedly installed inside the positioning ring seat 601. A heat-conducting fin 603 is fixedly installed on the cooling coil 602. A mounting groove 605 is provided on the surface of the positioning ring seat 601. The sealing ring 607 is installed on the positioning ring seat 601 through the mounting groove 605. A notch is provided on the exhaust port 501, and both ends of the cooling coil 602 extend out of the exhaust port 501 through the notch.

[0025] Specifically, the solidified oil on the surface of the heat-conducting fins 603 melts and drips down. When the oil drips, the guide cone 502 guides the dripping oil to the bottom edge of the exhaust port 501 to prevent the oil from being sucked into the vacuum pump 4. After the oil is guided to the bottom edge of the exhaust port 501, the valve on the oil drain pipe 504 can be opened. After the valve is opened, the collected oil will be discharged through the oil drain pipe 504.

[0026] Working principle: First, place the workpiece inside the coating chamber 2, then seal the chamber cover 1. After sealing the cover 1, start the vacuum pump 4. Since one end of the extraction pipe 3 is connected to the protruding port 505 and the other end is connected to the vacuum pump 4, starting the vacuum pump 4 will allow the gas inside the coating chamber 2 to be discharged through the extraction pipe 3. The minimum temperature of the cooling coil 602 is -120℃. Since the positioning ring seat 601 is fixed inside the extraction port 501 by the fixing bolt 604, and the cooling coil 602 is installed at the upper end of the extraction port 501 through the positioning ring seat 601, when the gas inside the coating chamber 2 is discharged through the extraction pipe 3, the high-temperature oil molecules will encounter the -120℃ cooling coil 602, causing the high temperature to decrease. The oil molecules quickly solidify on the surface of the heat-conducting fins 603 to inhibit the diffusion of oil molecules, and at the same time, they can capture water vapor in the chamber. After the coating is completed, the sealed chamber cover 1 can be opened and the workpiece can be taken out. After the sealed chamber cover 1 is opened, the temperature of the heat-conducting fins 603 will rise to room temperature. After the temperature of the heat-conducting fins 603 rises to room temperature, the solidified oil on its surface will melt. After the solidified oil on the surface of the heat-conducting fins 603 melts, it will drip down. When the oil drips, the guide cone 502 will guide the dripping oil to the bottom edge of the exhaust port 501 to prevent the oil from being sucked into the vacuum pump 4. After the oil is guided to the bottom edge of the exhaust port 501, the valve on the oil drain pipe 504 can be opened to facilitate the discharge of the collected oil out of the coating chamber 2.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vacuum-assisted oil vapor diffusion prevention device, comprising a coating chamber (2), wherein a sealed cover (1) is provided at the upper end of the coating chamber (2), an extraction pipe (3) is connected to the coating chamber (2), and a vacuum pump (4) is connected to the extraction pipe (3), characterized in that: An air extraction assembly (5) is fixedly installed inside the coating chamber (2). The air extraction assembly (5) includes an air extraction port (501) fixedly installed inside the coating chamber (2). A protruding pipe (505) is fixedly installed at the middle position of the bottom of the air extraction port (501). A guide cone (502) is fixedly installed at the upper end of the protruding pipe (505). An air extraction hole (506) is opened on the side wall of the protruding pipe (505). An oil drain pipe (504) is connected to the bottom of the air extraction port (501). An installation through hole (506) is opened at the upper edge of the air extraction port (501). 7) A condensing mechanism (6) is installed on the upper end of the air extraction port (501). The condensing mechanism (6) includes a positioning ring seat (601) fixedly installed inside the air extraction port (501). A sealing ring (607) is provided at the bottom edge of the positioning ring seat (601). A mounting screw hole (606) is opened on the positioning ring seat (601). A fixing bolt (604) is provided in the mounting screw hole (606). A cooling coil (602) is fixedly installed in the positioning ring seat (601). A heat-conducting fin (603) is fixedly installed on the cooling coil (602).

2. The vacuum pumping device for preventing oil vapor diffusion according to claim 1, characterized in that: The bottom of the air extraction port (501) is provided with an oil drain hole (503), and the oil drain pipe (504) is connected to the air extraction port (501) through the oil drain hole (503), and a valve is connected to the end of the oil drain pipe (504).

3. The vacuum pumping device for preventing oil vapor diffusion according to claim 2, characterized in that: The bottom of the flow guide cone (502) is provided with a docking groove. The flow guide cone (502) is connected to the upper end of the protruding pipe opening (505) through the docking groove, and the flow guide cone (502) is aligned vertically with the cooling coil (602).

4. The vacuum pumping device for preventing oil vapor diffusion according to claim 3, characterized in that: One end of the air extraction pipe (3) is connected to the protruding pipe opening (505), and the other end of the air extraction pipe (3) is connected to the vacuum pump (4). The fixing bolt (604) extends into the air extraction port (501) through the mounting through hole (507).

5. The vacuum pumping device for preventing oil vapor diffusion according to claim 4, characterized in that: The positioning ring seat (601) has an installation groove (605) on its surface, and the sealing ring (607) is installed on the positioning ring seat (601) through the installation groove (605).

6. The vacuum pumping device for preventing oil vapor diffusion according to claim 1, characterized in that: The air extraction port (501) has a notch, and both ends of the cooling coil (602) extend out of the air extraction port (501) through the notch.

7. The vacuum pumping device for preventing oil vapor diffusion according to claim 1, characterized in that: The fixing bolt (604) is connected to the positioning ring seat (601) through the mounting screw hole (606). The positioning ring seat (601) is fixed inside the air extraction port (501) by the fixing bolt (604). The cooling coil (602) is installed at the upper end of the air extraction port (501) through the positioning ring seat (601).

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