Spraying apparatus for forming metallized thin film strips

Abstract

This invention discloses a spraying apparatus for forming a metallized thin-film screen strip, comprising: an oil storage tank, a heating tank, a gas storage tank, and a liquefaction tank; an oil pump is installed in the oil storage tank, and an oil pipe is connected to the discharge port of the oil pump; a semiconductor cooling chip is embedded in the heating tank; an air jet is provided on the upper surface of the gas storage tank, and a sealing plate for sealing the air jet is slidably disposed in the gas storage tank; an electric actuator for pushing the sealing plate to slide is fixed in the gas storage tank; a booster pump is installed at the connection port; and the liquefaction tank is fixed to the bottom of the heating tank; by setting up independent heating tanks and gas storage tanks, the oil and gas pressure in the gas storage tank can be easily controlled by the booster pump, and the opening and closing of the air jet can be realized by controlling the sliding of the sealing plate by the electric actuator, thereby eliminating the problem of coating peeling off at the bright spot at the beginning of the metallized coating and improving the coating quality.

Description

Technical Field

[0001] This invention belongs to the field of metallization film processing technology, and particularly relates to a spraying device for forming metallized thin film strips. Background Technology

[0002] Currently, metallized films are made by vapor-depositing aluminum and zinc onto the surface of BOPP or BOPET films to form a metallic coating. Depending on the width of the metallic coating required by the user, a blank edge of a certain width is left on one side of the metallic coating; this is called a shielding strip. The blank edge area must be clearly free of coating, and the connection between the blank edge area and the metallic coating must be clear, without any blurred buffer zones. In production, an oil-coating shielding method is commonly used. That is, before film vapor deposition, a layer of oil is sprayed onto the corresponding blank edge area to prevent metal adhesion during vapor deposition.

[0003] This type of spraying equipment for applying shielding oil vapor to a thin film surface typically consists of a horizontally positioned cylindrical oil tank with a built-in electric heater. The top of the tank has a spraying area with a slot, and a sealing baffle is fixed to the upper end of the slot. The baffle has nozzles along its length for spraying oil vapor onto the thin film surface, with each nozzle corresponding to a shielding strip on the film with a blank edge. The oil in the tank is heated to form oil vapor, which is then sprayed onto the corresponding area of ​​the thin film surface through the nozzles on the baffle.

[0004] The existing technical solutions mentioned above have the following drawbacks: In the early stage of preparing the metallized film by vapor deposition, the oil in the oil tank must be heated first. The oil vapor that evaporates after heating will inevitably overflow from the nozzle of the baffle, contaminating the film surface and causing oil contamination points at the beginning of the metallized film. In addition, dust in the air will be adsorbed and adhered to the surface of the metallized film during the spraying process, causing the coating to be easy to fall off and affecting product quality. Furthermore, the airflow from the nozzle is affected by the electric heater, resulting in oil vapor that fluctuates, causing unstable air pressure and affecting the coating effect. Summary of the Invention

[0005] This invention addresses the problems of unstable spraying leading to easy coating peeling and poor coating quality in existing technologies, and proposes the following technical solution:

[0006] A spraying apparatus for forming a metallized thin film strip includes: an oil storage tank, a heating tank, a gas storage tank, and a liquefaction tank;

[0007] An oil pump is installed inside the oil storage tank, and an oil pipe is connected to the discharge port of the oil pump; a semiconductor refrigeration chip is embedded in the heating tank, and the heating surface of the semiconductor refrigeration chip is located inside the heating tank; one end of the oil pipe extends into the heating tank.

[0008] The upper surface of the gas storage tank is provided with a jet nozzle, and a sealing plate for sealing the jet nozzle is slidably disposed inside the gas storage tank. An electric push rod for pushing the sealing plate to slide is fixed in the gas storage tank. The heating tank is fixed to the bottom of the gas storage tank, and a communication port is provided between the top of the heating tank and the bottom of the gas storage tank. A booster pump is installed at the communication port.

[0009] The liquefaction tank is fixed to the bottom of the heating tank. The cooling surface of the semiconductor refrigeration chip is disposed inside the liquefaction tank. The liquefaction tank is connected to an inlet pipe and an outlet pipe. A cover is disposed on the top of the gas storage tank. The jet nozzle is disposed inside the cover. Inlet and outlet channels are respectively opened on both sides of the cover. A circulation pump is installed on one side of the gas storage tank. The suction end of the circulation pump is connected to the inside of the cover. The exhaust end of the circulation pump is connected to the inlet pipe. One end of the outlet pipe is connected to the cover.

[0010] As a preferred embodiment of the above technical solution, the oil storage tank is provided with an oil filling port, a plug is threaded onto the oil filling port, a pressure balancing port is installed on the top of the oil storage tank, and a level gauge is installed on the side wall of the oil storage tank. The oil filling port is provided for adding oil to the oil storage tank to ensure sufficient oil volume. By independently setting up the oil storage tank and the heating tank, the efficiency of heating and generating oil vapor in the heating tank is not affected during the refueling process.

[0011] As a preferred embodiment of the above technical solution, the heating tank is provided with heat dissipation fins, which are submerged in the oil, and the bottom of the heat dissipation fins are attached to the heating surface of the semiconductor cooling chip. The heat dissipation fins are used to rapidly diffuse the heat generated by the heating surface of the semiconductor cooling chip into the oil, achieving a rapid heating effect, and the diffusion process ensures uniform heating of the oil as a whole.

[0012] As a preferred embodiment of the above technical solution, pressure sensors are installed in both the heating tank and the gas storage tank, and an electrically controlled valve is installed at the connection point between the bottom of the gas storage tank and the heating tank. The pressure sensors monitor the gas pressure in both the heating tank and the gas storage tank to ensure stable oil and gas output within specified ranges.

[0013] As a preferred embodiment of the above technical solution, a filler port is provided on one side of the heating tank, and a one-way valve is installed at the filler port. The upper end of the oil pipe is connected to the one-way valve. The one-way valve ensures that the oil in the storage tank can smoothly enter the heating tank through the oil pipe, and that the internal pressure of the heating tank increases during the heating process, preventing oil vapor from diffusing into the storage tank.

[0014] As a preferred embodiment of the above technical solution, multiple air jets are provided, and the multiple air jets are equally spaced. The air jets are round or square holes, and a transparent cover plate is provided to seal the top of the cover. The number of air jets is set according to actual needs to meet processing requirements. The air jets are round holes, which facilitates the opening of internal threads and the installation of nozzles of different shapes. The air jets are square holes, which facilitate the control of the air volume by sliding the sealing plate without affecting the spraying width.

[0015] The liquefaction tank has a drain port at the bottom, and a valve is installed at the drain port. The drain port at the bottom of the liquefaction tank is used to drain the oil accumulated inside, and the oil recovery operation can be conveniently performed by opening and closing the valve.

[0016] As a preferred embodiment of the above technical solution, a removable baffle is threadedly fixed to the top of the air tank, and the jet nozzle is located on the surface of the removable baffle. A sealing gasket is provided between the upper end of the air tank and the removable baffle. The baffle is removably fixed to the top of the air tank, facilitating disassembly and replacement, meeting the needs of cleaning and maintenance, and reducing maintenance costs.

[0017] As a preferred embodiment of the above technical solution, a sliding rod is fixed inside the gas storage tank, and a sliding sleeve is slidably connected to the surface of the sliding rod. The sliding sleeve is fixedly connected to the sealing plate. The electric push rod is fixed outside the gas storage tank, and the movable end of the electric push rod slides through the gas storage tank and connects to the sealing plate. By adding a sliding rod and a sliding sleeve to cooperate, the sealing plate is guided. Furthermore, a cover structure is provided to reduce the friction of the sealing plate sliding, reduce wear, and extend service life.

[0018] As a preferred embodiment of the above technical solution, the cover is rectangular, with an air inlet and an air outlet diagonally opposite each other. An inlet / outlet channel is positioned between the air inlets and outlets, with the horizontal height of the channel lower than the height of the air inlets and outlets. The suction end of the circulation pump is connected to the air outlet, and one end of the outlet pipe is connected to the air inlet. The air inlet and outlet pipes are positioned at the upper end of the metallized film, circulating airflow only in the space gathered at the top of the cover, without affecting the spraying process between the metallized film and the jet nozzle. The diagonal arrangement of the air inlet and outlet pipes enhances the overall airflow circulation effect within the cover.

[0019] As a preferred embodiment of the above technical solution, it further includes a support frame, the upper end of which is connected to the gas storage tank, the oil storage tank is fixed to one side of the support frame, and the oil pipe is a telescopic flexible hose.

[0020] As a preferred embodiment of the above technical solution, the support frame includes a support rod and a sleeve. The support rod is slidably inserted into the lower end of the sleeve, and an electric push rod is fixed to the support rod for pushing the sleeve to slide. The overall height of the gas storage tank can be adjusted by controlling the electric push rod, facilitating application according to site requirements during actual operation.

[0021] As a preferred embodiment of the above technical solution, the lower end of the support rod is fixed with a base, the surface of the base is provided with mounting holes, the fixed end of the electric push rod is fixed to the support rod, the movable end of the electric push rod is fixed to the rod sleeve, and the rod sleeve is arranged parallel to the support rod.

[0022] As a preferred embodiment of the above technical solution, the upper end of the support frame is hinged to the bottom of the gas storage tank via a hinged seat. The oil storage tank is located diagonally below the heating tank, and chamfers are respectively provided at the joints of one corner of the oil storage tank and one corner of the heating tank. Since the gas storage tank is long and occupies a large space, the upper end of the support frame is connected to the gas storage tank by a hinge, which facilitates rotation and folding, resulting in a smaller overall equipment footprint and easier transportation. Furthermore, during maintenance, folding and standing the equipment exposes most of the structure, facilitating maintenance operations.

[0023] As a preferred embodiment of the above technical solution, a first buckle is installed on the outer wall of the oil storage tank, and a first slot is formed on the side wall of the heating tank, with the first buckle engaging with the first slot; a second buckle is installed at the bottom of the gas storage tank, and a second slot is formed on the outer wall of the rod sleeve, with the second buckle engaging with the second slot. By setting the first buckle to engage with the first slot, the gas storage tank is kept in a horizontal position, facilitating processing and operation; by rotating the gas storage tank around the hinge seat, the second buckle engages with the second slot, achieving vertical locking, facilitating transportation and maintenance.

[0024] The beneficial effects of this invention are as follows:

[0025] 1. The enclosure effectively isolates impurities in the external air from adhering to the surface of the metallized film, keeping the sprayed surface clean and improving the spraying effect. The operation of the circulation pump makes the gas inside the enclosure and the liquefaction tank circulate repeatedly, reducing the interaction between the airflow inside the enclosure and the outside airflow, and further reducing the entry of external dust into the enclosure through the inlet and outlet channels. The circulating airflow not only carries away excess oil and gas floating inside the enclosure, but also cools the metallized film inside the enclosure, so that the oil adhering to the surface dries and solidifies faster. The oil and gas are liquefied and accumulated at the bottom of the liquefaction tank due to the low temperature environment, which is convenient for recycling.

[0026] 2. By setting up independent heating tanks and gas storage tanks, heating and oil-gas separation are achieved. The pressure of oil-gas in the gas storage tank can be easily controlled by a booster pump. The opening and closing of the jet nozzle can be achieved by controlling the sliding of the sealing plate by the electric actuator. The time of spraying oil vapor onto the film surface can be precisely controlled, thereby eliminating the problem of coating peeling off at the bright spot at the beginning of the metallization coating and improving the coating quality.

[0027] 3. The booster pump draws the vaporized oil and gas from the heating tank into the gas storage tank, so that the gas storage tank maintains a constant gas pressure, ensuring that the jet nozzle sprays out a stable amount of oil and gas, so that the oil film sprayed on the surface of the metallized film is uniform; the device uses a semiconductor refrigeration chip to make full use of both cooling and heating, thereby improving energy efficiency. Attached Figure Description

[0028] Figure 1 The diagram shown is a three-dimensional structural schematic of the spraying apparatus used to form a metallized thin film strip in the embodiment.

[0029] Figure 2 The diagram shown is an exploded view of an embodiment;

[0030] Figure 3 The diagram shown is a side view of the embodiment.

[0031] Figure 4 The diagram shown is a three-dimensional structural schematic of the gas storage tank in a horizontal state in the embodiment.

[0032] Figure 5 The diagram shown is a three-dimensional structural schematic of the gas storage tank in the vertical position in the embodiment.

[0033] Reference numerals: 100, oil storage tank; 101, oil inlet; 103, air pressure balance port; 105, level gauge; 110, oil pump; 120, oil pipe; 190, first latch; 200, heating tank; 210, semiconductor refrigeration chip; 220, one-way valve; 300, air storage tank; 301, jet nozzle; 303, removable baffle; 310, sealing plate; 320, electric actuator; 330, booster pump; 340, cover; 341, inlet / outlet channel; 350, circulation pump; 360, slide rod; 361, sliding sleeve; 390, second latch; 400, liquefaction tank; 410, air inlet pipe; 420, air outlet pipe; 430, valve; 500, support frame; 501, hinge seat; 510, support rod; 520, base; 530, rod sleeve; 540, electric actuator. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0035] Example

[0036] Figures 1-5 The illustration shows a spraying apparatus for forming a metallized thin film strip, as a specific embodiment of the present invention, comprising: an oil storage tank 100, a heating tank 200, a gas storage tank 300, and a liquefaction tank 400.

[0037] An oil pump 110 is installed inside the oil storage tank 100, and an oil pipe 120 is connected to the discharge port of the oil pump 110; a semiconductor cooling chip 210 is embedded in the heating tank 200, and the heating surface of the semiconductor cooling chip 210 is located inside the heating tank 200; one end of the oil pipe 120 extends into the heating tank 200.

[0038] An air outlet 301 is provided on the upper surface of the air storage tank 300. A sealing plate 310 for sealing the air outlet 301 is slidably disposed inside the air storage tank 300. An electric push rod 320 for pushing the sealing plate 310 to slide is fixed in the air storage tank 300. A heating tank 200 is fixed at the bottom of the air storage tank 300. A communication port is provided between the top of the heating tank 200 and the bottom of the air storage tank 300. A booster pump 330 is installed at the communication port.

[0039] The liquefaction tank 400 is fixed to the bottom of the heating tank 200. The cooling surface of the semiconductor cooling chip 210 is located inside the liquefaction tank 400. The liquefaction tank 400 is connected to an air inlet pipe 410 and an air outlet pipe 420. The top of the gas storage tank 300 is equipped with a cover 340. The air jet 301 is located inside the cover 340. The cover 340 has inlet and outlet channels 341 on both sides. A circulation pump 350 is installed on one side of the gas storage tank 300. The suction end of the circulation pump 350 is connected to the inside of the cover 340. The exhaust end of the circulation pump 350 is connected to the air inlet pipe 410. One end of the air outlet pipe 420 is connected to the cover 340.

[0040] A contact switch is installed inside the 300. When the sealing plate 310 slides to close the air jet 301, it pushes the normally closed contact of the contact switch to open, causing the booster pump 330 to be de-energized and stop working, thus improving the linkage performance of the equipment operation.

[0041] Figure 2 The illustration shows a specific embodiment of the present invention, in which the oil storage tank 100 has an oil filling port 101, a plug is threaded onto the oil filling port 101, a pressure balance port 103 is installed on the top of the oil storage tank 100, and a level gauge 105 is installed on the side wall of the oil storage tank 100. The oil filling port 101 is provided for adding oil to the oil storage tank 100 to ensure sufficient oil volume. By independently configuring the oil storage tank 100 and the heating tank 200, the efficiency of heating and generating oil vapor in the heating tank 200 is not affected during the refueling process.

[0042] In one specific embodiment of the present invention, the heating tank 200 is provided with heat dissipation fins, which are immersed in the oil and the bottom of the heat dissipation fins are attached to the heating surface of the semiconductor cooling chip 210. The heat dissipation fins are provided to rapidly diffuse the heat generated by the heating surface of the semiconductor cooling chip 210 into the oil, achieving a rapid heating effect, and the diffusion ensures that the oil is heated evenly throughout.

[0043] In one specific embodiment of the present invention, pressure sensors are installed in the heating tank 200 and the gas storage tank 300, respectively, and an electrically controlled valve is installed at the connection port between the bottom of the gas storage tank 300 and the heating tank 200. The pressure sensors monitor the gas pressure in the heating tank 200 and the gas storage tank 300 to ensure stable oil and gas output within a specified range.

[0044] In one specific embodiment of the present invention, a filler port is provided on one side of the heating tank 200, and a one-way valve 220 is installed at the filler port. The upper end of the oil pipe 120 is connected to the one-way valve 220. The one-way valve 220 ensures that the oil in the oil storage tank 100 can smoothly enter the heating tank 200 through the oil pipe 120, and that the internal pressure of the heating tank 200 increases during the heating process, preventing oil vapor from diffusing into the oil storage tank 100.

[0045] Figures 1-2 The illustration shows a specific embodiment of the present invention, in which multiple air nozzles 301 are provided, and the multiple air nozzles 301 are equally spaced. The air nozzles 301 are round holes or square holes, and a transparent cover plate is sealed on the top of the cover 340. The number of air nozzles 301 is set according to actual needs to meet processing requirements. The air nozzles 301 are round holes, which facilitates the opening of internal threads and the installation of nozzles of different shapes. The air nozzles 301 are square holes, which facilitates the control of air volume by sliding the sealing plate 310 without affecting the spraying width.

[0046] The liquefaction tank 400 has a drain port at the bottom, and a valve 430 is installed at the drain port. The drain port at the bottom of the liquefaction tank 400 is used to drain the oil accumulated inside, and the oil recovery operation can be conveniently performed by opening and closing the valve 430.

[0047] Figure 2 As shown in a specific embodiment of the present invention, a removable baffle 303 is threadedly fixed to the top of the air tank 300. An air jet 301 is formed on the surface of the removable baffle 303, and a sealing gasket is provided between the upper end of the air tank 300 and the removable baffle 303. The baffle 303 is removably fixed to the top of the air tank 300, facilitating disassembly and replacement, meeting the needs of cleaning and maintenance, and reducing maintenance costs.

[0048] Figure 2As shown in a specific embodiment of the present invention, a slide rod 360 is fixed inside the gas storage tank 300, and a sliding sleeve 361 is slidably connected to the surface of the slide rod 360. The sliding sleeve 361 is fixedly connected to the sealing plate 310. An electric push rod 320 is fixed outside the gas storage tank 300. The movable end of the electric push rod 320 slides through the gas storage tank 300 and is connected to the sealing plate 310. By adding the slide rod 360 and the sliding sleeve 361, the sealing plate 310 is guided. In addition, a cover structure is provided to reduce the friction of the sealing plate 310 sliding, reduce wear, and extend service life.

[0049] In one specific embodiment of the present invention, the cover 340 is rectangular, with an air inlet and an air outlet diagonally opposite each other. An inlet / outlet channel 341 is positioned between the air inlet and the air outlet, with the horizontal height of the inlet / outlet channel 341 lower than the height of the air inlet and the air outlet. The suction end of the circulation pump 350 is connected to the air outlet, and one end of the air outlet pipe 420 is connected to the air inlet. The airflow inlets and outlets of the air inlet pipe 410 and the air outlet pipe 420 are positioned at the upper end of the metallized film, circulating only the airflow accumulated in the top space of the cover 340, without affecting the spraying process between the metallized film and the jet nozzle 301. The diagonal arrangement of the air inlet pipe 410 and the air outlet pipe 420 enhances the overall airflow circulation effect within the cover 340.

[0050] Figures 3-5 The illustration shows a specific embodiment of the present invention, which also includes a support frame 500, the upper end of which is connected to the gas storage tank 300, the oil storage tank 100 is fixed to one side of the support frame 500, and the oil pipe 120 is a telescopic flexible hose.

[0051] Figure 3 The illustration shows a specific embodiment of the present invention. The support frame 500 includes a support rod 510 and a rod sleeve 530. The support rod 510 is slidably inserted into the lower end of the rod sleeve 530. An electric push rod 540 for pushing the rod sleeve 530 to slide is fixed to the support rod 510. The overall height of the gas storage tank 300 can be adjusted by controlling the electric push rod 540, which facilitates application according to the needs of the site during actual operation.

[0052] In a specific embodiment of the present invention, a base 520 is fixed to the lower end of the support rod 510, and an installation hole is provided on the surface of the base 520. The fixed end of the electric push rod 540 is fixed to the support rod 510, and the movable end of the electric push rod 540 is fixed to the rod sleeve 530. The rod sleeve 530 is arranged parallel to the support rod 510.

[0053] Figure 5The illustration shows a specific embodiment of the present invention. The upper end of the support frame 500 is hinged to the bottom of the gas storage tank 300 via a hinge seat 501. The oil storage tank 100 is located diagonally below the heating tank 200. A chamfer is provided at the junction of one corner of the oil storage tank 100 and one corner of the heating tank 200. Because the gas storage tank 300 is relatively long and occupies a large space, the upper end of the support frame 500 is connected to the gas storage tank 300 by a hinge, which facilitates rotation and folding, resulting in a smaller overall equipment footprint and easier transportation. Furthermore, during maintenance, folding and standing the equipment exposes most of the structure, facilitating maintenance operations.

[0054] In a specific embodiment of the present invention, a first buckle 190 is installed on the outer wall of the oil storage tank 100, and a first slot is opened on the side wall of the heating tank 200. The first buckle 190 engages with the first slot. A second buckle 390 is installed at the bottom of the gas storage tank 300, and a second slot is opened on the outer wall of the rod sleeve 530. The second buckle 390 engages with the second slot. By setting the first buckle 190 to engage with the first slot, the gas storage tank 300 is kept in a horizontal state, which is convenient for processing and operation. By rotating the gas storage tank 300 around the hinge seat 501, the second buckle 390 engages with the second slot, realizing the locking of the vertical state, which is convenient for transportation and maintenance.

[0055] Working principle:

[0056] By setting up independent heating tank 200 and gas storage tank 300, heating and oil-gas separation are achieved. The pressure of oil-gas in the gas storage tank 300 can be easily controlled by the booster pump 330. The opening and closing of the jet nozzle 301 is achieved by controlling the sliding of the sealing plate 310 by the electric actuator 320. The time of spraying oil vapor onto the film surface can be precisely controlled, thereby eliminating the problem of coating peeling off at the bright spot at the beginning of the metallization coating and improving the coating quality. The booster pump 330 draws the vaporized oil-gas in the heating tank 200 into the gas storage tank 300, so that the gas storage tank 300 maintains a constant air pressure, ensuring that the jet nozzle 301 sprays out stable oil-gas, so that the oil film sprayed on the surface of the metallization film is uniform. The device uses a semiconductor cooling chip 210 to make full use of both cooling and heating, improving energy efficiency.

[0057] The enclosure 340 effectively isolates impurities in the external air from adhering to the surface of the metallized film, keeping the sprayed surface clean and improving the spraying effect. The operation of the circulation pump 350 causes the gas inside the enclosure 340 to circulate repeatedly with the liquefaction tank 400, reducing the interaction between the airflow inside the enclosure 340 and the outside airflow, and further reducing the entry of external dust into the enclosure 340 through the inlet and outlet channels 341. The circulating airflow not only carries away excess oil and gas floating inside the enclosure 340, but also cools the metallized film inside the enclosure 340, causing the oil adhering to the surface to dry and solidify faster. The oil and gas are liquefied and accumulated at the bottom of the liquefaction tank 400 due to the low temperature environment, making it easy to recycle.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A spraying apparatus for forming metallized thin-film screen strips, characterized in that, include: An oil storage tank (100) is provided, and an oil pump (110) is installed inside the oil storage tank (100). The discharge port of the oil pump (110) is connected to an oil pipe (120). A heating tank (200) is fitted with a semiconductor cooling chip (210), the heating surface of which is disposed inside the heating tank (200), and one end of the oil pipe (120) extends into the heating tank (200); An air storage tank (300) has an air jet port (301) on its upper surface. A sealing plate (310) for sealing the air jet port (301) is slidably disposed inside the air storage tank (300). An electric push rod (320) for pushing the sealing plate (310) to slide is fixed in the air storage tank (300). A heating tank (200) is fixed at the bottom of the air storage tank (300). A communication port is provided between the top of the heating tank (200) and the bottom of the air storage tank (300). A booster pump (330) is installed at the communication port. A liquefaction tank (400) is fixed at the bottom of the heating tank (200). The cooling surface of the semiconductor cooling chip (210) is disposed inside the liquefaction tank (400). The liquefaction tank (400) is connected to an air inlet pipe (410) and an air outlet pipe (420). A cover (340) is provided on the top of the gas storage tank (300). The jet nozzle (301) is disposed inside the cover (340). Inlet and outlet channels (341) are respectively opened on both sides of the cover (340). A circulation pump (350) is installed on one side of the gas storage tank (300). The suction end of the circulation pump (350) is connected to the inside of the cover (340). The exhaust end of the circulation pump (350) is connected to the air inlet pipe (410). One end of the air outlet pipe (420) is connected to the cover (340).

2. The spraying apparatus for forming a metallized thin film strip according to claim 1, characterized in that, The oil storage tank (100) is provided with an oil inlet (101), and a plug is threaded to the oil inlet (101). A pressure balance port (103) is installed on the top of the oil storage tank (100), and a level gauge (105) is installed on the side wall of the oil storage tank (100).

3. The spraying apparatus for forming a metallized thin film strip according to claim 2, characterized in that, The heating tank (200) is provided with heat dissipation fins, which are immersed in oil, and the bottom of the heat dissipation fins are attached to the heating surface of the semiconductor cooling chip (210).

4. The spraying apparatus for forming a metallized thin film strip according to claim 2, characterized in that, Pressure sensors are installed in the heating tank (200) and the gas storage tank (300), respectively. An electric control valve is installed at the connection port between the bottom of the gas storage tank (300) and the heating tank (200).

5. A spraying apparatus for forming a metallized thin-film screen strip according to claim 2, characterized in that, The heating tank (200) has an oil filling port on one side, and a one-way valve (220) is installed at the oil filling port. The upper end of the oil pipe (120) is connected to the one-way valve (220).

6. A spraying apparatus for forming a metallized thin-film screen strip according to claim 2, characterized in that, The jet nozzle (301) has multiple openings, and the multiple jet nozzles (301) are equally spaced. The jet nozzle (301) is a round hole or a square hole. The top of the cover (340) is sealed with a transparent cover plate. The liquefaction tank (400) has a drain port at the bottom, and a valve (430) is installed at the drain port.

7. A spraying apparatus for forming a metallized thin-film screen strip according to claim 2, characterized in that, The top of the gas storage tank (300) is fixedly connected to a detachable baffle (303) by threads. The jet nozzle (301) is opened on the surface of the detachable baffle (303). A sealing gasket is provided between the upper end of the gas storage tank (300) and the detachable baffle (303).

8. A spraying apparatus for forming a metallized thin-film screen strip according to claim 2, characterized in that, A slide rod (360) is fixed inside the gas storage tank (300). A sliding sleeve (361) is slidably connected to the surface of the slide rod (360). The sliding sleeve (361) is fixedly connected to the sealing plate (310). The electric push rod (320) is fixed outside the gas storage tank (300). The movable end of the electric push rod (320) slides through the gas storage tank (300) and is connected to the sealing plate (310).

9. A spraying apparatus for forming a metallized thin-film screen strip according to claim 2, characterized in that, The cover (340) is rectangular, and the cover (340) has an air inlet and an air outlet at opposite corners. The inlet-outlet channel (341) is located between the air inlet and the air outlet. The horizontal height of the inlet-outlet channel (341) is lower than the height of the air inlet and the air outlet. The air pump (350) is connected to the air outlet at its suction end, and one end of the air outlet pipe (420) is connected to the air inlet.

10. A spraying apparatus for forming a metallized thin-film screen strip according to claim 2, characterized in that, It also includes a support frame (500), the upper end of which is connected to the gas storage tank (300), the oil storage tank (100) is fixed to one side of the support frame (500), and the oil pipe (120) is a telescopic hose; The support frame (500) includes a support rod (510) and a sleeve (530). The support rod (510) is slidably inserted into the lower end of the sleeve (530). The support rod (510) is fixed with an electric push rod (540) for pushing the sleeve (530) to slide. The lower end of the support rod (510) is fixed with a base (520), and the surface of the base (520) is provided with mounting holes. The fixed end of the electric push rod (540) is fixed to the support rod (510), and the movable end of the electric push rod (540) is fixed to the rod sleeve (530). The rod sleeve (530) is arranged parallel to the support rod (510). The upper end of the support frame (500) is hinged to the bottom of the gas storage tank (300) through the hinge seat (501). The oil storage tank (100) is located diagonally below the heating tank (200). A corner of the oil storage tank (100) and a corner of the heating tank (200) are respectively provided with mutually fitting chamfers. The outer wall of the oil storage tank (100) is equipped with a first buckle (190), and the side wall of the heating tank (200) is provided with a first slot. The first buckle (190) is engaged with the first slot. The bottom of the gas storage box (300) is equipped with a second buckle (390), and the outer wall of the rod sleeve (530) is provided with a second slot. The second buckle (390) is engaged with the second slot.

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