A coating glass production process

Abstract

The present invention discloses a coated glass production process, and relates to the technical field of glass production. The present invention can improve the spraying range and uniformity of the coating liquid on the glass surface. The detachable design of the atomizing nozzle facilitates the rapid replacement and maintenance of the atomizing nozzle, greatly reducing the downtime. In addition, by installing a suitable number of atomizing nozzles, the spraying range can be effectively controlled according to the glass size and production requirements; through the design of the air collecting chamber and the exhaust gas treatment system, the exhaust gas can be effectively collected and treated before being discharged, reducing the emission of harmful gases. The cooperation of the air intake impeller and the guide column effectively enhances the absorption and treatment efficiency of the exhaust gas. At the same time, the rotation of the exhaust gas impeller drives the operation of the entire system through the transmission device, forming an energy recovery cycle. This design can not only significantly reduce the pollution to the environment, but also save the energy consumption of the system, and meet the environmental protection requirements.

Description

Technical Field

[0001] The invention relates to the technical field of glass production, and in particular to a coated glass production process. Background Art

[0002] At present, most of the existing coated glass production equipment adopts a simple fixed spraying method. The spraying uniformity and spraying area of ​​these equipment are often subject to certain restrictions, resulting in unstable quality of the produced coated glass, prone to uneven coating, and affecting the final product performance. In addition, the waste gas treatment method mostly relies on a single exhaust system, the waste gas treatment is not thorough, it is easy to cause environmental pollution, and cannot meet the current increasingly stringent environmental protection requirements. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a coated glass production process, comprising the following steps: S1, preparing a coating liquid of a solution or suspension from a metal organic compound or an inorganic compound (such as metal salts; metal compounds commonly used in coating liquids include cobalt, nickel, iron, titanium, chromium, tin, etc., and the solvent can be an inorganic or organic substance, such as acetic acid, ethanol, etc.); S2, atomizing the coating liquid through an atomizing component to form fine droplets, so that the atomized metal compound droplets are uniformly sprayed onto the heated glass surface (the atomizing driving gas is usually air, nitrogen, etc.); S3, maintaining the surface temperature of the glass at 560-600°C During the coating process, the heat of the glass itself is used to cause the metal compounds in the coating solution to undergo a pyrolysis reaction to generate a metal oxide film layer (in this process, the metal ions are oxidized and bonded to the glass surface to form a functional film); the thickness, crystal type, uniformity and performance of the film layer are adjusted by controlling the flow rate, temperature, size of atomized particles, temperature of the glass surface and other factors of the spraying solution (coating solution); S4. The waste gas generated during the coating process is collected by the atomizing nozzle support seat and enters the waste gas treatment system through the waste gas treatment connecting pipe. Through solid-liquid-gas separation or high-temperature combustion treatment, the harmful gas is purified to meet the standards before being discharged; S5. The coated glass is inspected for quality.

[0004] Preferably, the atomization assembly includes two symmetrically arranged partitions, a spraying part is provided between the two partitions, the spraying part includes an atomization pool, an atomization nozzle support seat is fixedly provided on the atomization pool, a plurality of atomization nozzles are arranged in parallel and equidistantly at the bottom of the atomization nozzle support seat, which are used to atomize the coating liquid, and the atomization nozzle and the atomization nozzle support seat are connected in a manner that is easy to disassemble, so as to adjust the atomization degree of the coating liquid.

[0005] Preferably, the atomization assembly also includes a sliding support frame, which is fixed on an external support frame, and an air collecting chamber is also fixed on the external support frame. The air collecting chamber is provided with a coaxially arranged driving air inlet and an exhaust gas exhaust pipe, and the air collecting chamber is also provided with two symmetrically arranged exhaust gas inlets for absorbing exhaust gas; wherein the driving air inlet is fixedly connected to a driving air inlet pipe, and the driving air inlet pipe is also fixed on the external support frame, and a flange is provided at one end of the driving air inlet pipe away from the external support frame, which is connected to the air pump through the flange, so as to drive the flow of gas in the driving air inlet, the air collecting chamber and the exhaust gas exhaust pipe.

[0006] Preferably, an exhaust gas treatment connecting pipe is fixed to one end of the exhaust gas exhaust pipe away from the driving air inlet through an overhead frame, and a gap is provided between the exhaust gas treatment connecting pipe and the exhaust gas exhaust pipe, and an exhaust gas impeller is provided with a rotating seal in the gap; a driving gearbox is fixed on the lower surface of the air collecting chamber, and the input shaft of the driving gearbox is connected to the outer ring of the exhaust gas impeller through a transmission belt, and a driving synchronous gear is fixed on the output shaft of the driving gearbox.

[0007] Preferably, intake impellers are rotatably mounted at the bottom of the two exhaust gas inlets, and intake gear rings are fixedly sleeved on the two intake impellers, and the two intake gear rings are meshed with driving synchronous gears for transmission; a planetary gearbox is fixed on the sliding support frame, and the input shaft of the planetary gearbox is fixed to the output shaft of the driving gearbox and the driving synchronous gear, and a widened swing arm that rotatably cooperates with the sliding support frame is fixed on the output shaft of the planetary gearbox.

[0008] Preferably, a widening movable pin is fixedly provided on the atomizing pool, and the widening movable pin is rotatably matched with the end of the widening swing arm away from the output shaft of the planetary gearbox; the atomizing pool is slidably installed on two parallel first sliding rods, and two parallel second sliding rods are fixed between the two first sliding rods. The two first sliding rods and the two second sliding rods form a rectangular frame, and the two second sliding rods are both slidably installed on the sliding support frame.

[0009] Preferably, two symmetrically arranged widened sliding holes are provided on the atomizing pool, wherein the two first sliding rods are slidably matched with the atomizing pool through the widened sliding holes. The atomizing pool is also provided with a feed port, and a feeding boost hose is rotary-sealed and connected to the feed port. The feeding boost hose is used to transport the coating liquid to the inside of the atomizing pool.

[0010] Preferably, a guide column is coaxially arranged in each exhaust gas inlet, and the guide column is located at the rotation axis of the intake impeller, and is used to guide external exhaust gas to pass through the intake impeller and enter the exhaust gas inlet.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention, through the design of the sliding support frame and the planetary gearbox, enables the atomizing pool to slide horizontally in multiple directions on the first sliding rod and the second sliding rod, which can improve the spraying range and uniformity of the coating liquid on the glass surface. At the same time, the detachable design of the atomizing nozzle facilitates the rapid replacement and maintenance of the atomizing nozzle, greatly reducing downtime, thereby improving production efficiency. In addition, by installing a suitable number of atomizing nozzles, the spraying range can be effectively controlled according to the glass size and production requirements. This will not only reduce the waste of coating liquid, but also reduce production costs; (2) Through the design of the air collecting chamber and the exhaust gas treatment system, the exhaust gas can be effectively collected and treated before being discharged, reducing the emission of harmful gases. The cooperation of the intake impeller and the guide column effectively enhances the absorption and treatment efficiency of the exhaust gas. At the same time, the rotation of the exhaust impeller drives the operation of the entire system through the transmission device, making the structure of the entire system more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 It is a schematic diagram of the structure of the external support frame of the present invention.

[0014] Figure 3 This is a schematic diagram of the structure of the exhaust gas treatment connecting pipe of the present invention.

[0015] Figure 4 This is a relative position diagram of the driving air inlet and the exhaust gas discharge pipe of the present invention.

[0016] Figure 5 It is a schematic diagram of the gas collecting chamber structure of the present invention.

[0017] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle.

[0018] Figure 7 It is a schematic diagram of the structure of the atomizing pool of the present invention.

[0019] Figure 8 It is a schematic diagram of the structure of the intake impeller of the present invention.

[0020] In the figure: 101-atomizing pool; 102-widening movable pin; 103-widening sliding hole; 104-feeding port; 105-atomizing nozzle support seat; 106-atomizing nozzle; 107-first sliding rod; 108-second sliding rod; 109-sliding support frame; 110-widening swing arm; 111-planetary gearbox; 112-driving synchronous gear; 113-intake gear ring; 114-intake impeller; 115-air collecting chamber; 116-driving air inlet; 117-guide column; 118-exhaust gas exhaust pipe; 119-exhaust impeller; 120-exhaust gas inlet; 121-exhaust gas treatment connecting pipe; 122-overhead frame; 123-transmission belt; 124-driving gearbox; 125-external support frame; 126-feeding boost hose; 127-driving air inlet pipe; 128-partition. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-Figure 8 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0022] The present invention provides equipment for a coated glass production process, including an atomizing component, the atomizing component including two symmetrically arranged partitions 128, a spraying part is arranged between the two partitions 128, the spraying part includes an atomizing pool 101, an atomizing nozzle support seat 105 is fixedly connected to the atomizing pool 101, a plurality of atomizing nozzles 106 are arranged in parallel and equidistantly at the bottom of the atomizing nozzle support seat 105, and are used to atomize a coating liquid, and the atomizing nozzle 106 is connected to the atomizing nozzle support seat 105 in a manner that is easy to disassemble, so as to facilitate adjustment of the atomization degree of the coating liquid.

[0023] The atomization assembly also includes a sliding support frame 109, which is fixed on an external support frame 125, and a gas collecting chamber 115 is also fixed on the external support frame 125. The gas collecting chamber 115 is provided with a coaxially arranged driving air inlet 116 and an exhaust gas exhaust pipe 118, and the gas collecting chamber 115 is also provided with two symmetrically arranged exhaust gas inlets 120 for absorbing exhaust gas; wherein the driving air inlet 116 is fixedly connected to a driving air inlet pipe 127, and the driving air inlet pipe 127 is also fixed on the external support frame 125, and a flange is provided at one end of the driving air inlet pipe 127 away from the external support frame 125, and is connected to the air pump through the flange, so as to drive the flow of gas in the driving air inlet 116, the air collecting chamber 115 and the exhaust gas exhaust pipe 118. An exhaust gas treatment connecting pipe 121 is fixed overhead at one end of the exhaust gas exhaust pipe 118 away from the driving air inlet 116 through an overhead frame 122, and a gap is provided between the exhaust gas treatment connecting pipe 121 and the exhaust gas exhaust pipe 118, and an exhaust gas impeller 119 is provided with a rotating seal in the gap; a driving gearbox 124 is fixed on the lower surface of the air collecting chamber 115, and the input shaft of the driving gearbox 124 is connected to the outer ring of the exhaust gas impeller 119 through a transmission belt 123, and a driving synchronous gear 112 is fixed on the output shaft of the driving gearbox 124. An intake impeller 114 is rotatably mounted at the bottom of the two exhaust gas inlets 120, and an intake gear ring 113 is fixedly sleeved on the two intake impellers 114, and the two intake gear rings 113 are meshed with a driving synchronous gear 112 for transmission; a planetary gearbox 111 is fixed on the sliding support frame 109, and the input shaft of the planetary gearbox 111 is fixed to the output shaft of the driving gearbox 124 and the driving synchronous gear 112, and a widening swing arm 110 that rotates with the sliding support frame 109 is fixed on the output shaft of the planetary gearbox 111. A widening movable pin 102 is fixedly provided on the atomizing pool 101, and the widening movable pin 102 is rotatably matched with the end of the widening swing arm 110 away from the output shaft of the planetary gearbox 111; the atomizing pool 101 is slidably installed on two parallel first sliding rods 107, and two parallel second sliding rods 108 are fixed between the two first sliding rods 107. The two first sliding rods 107 and the two second sliding rods 108 form a rectangular frame, and the two second sliding rods 108 are slidably installed on the sliding support frame 109. Two symmetrically arranged widening sliding holes 103 are provided on the atomizing pool 101, wherein the two first sliding rods 107 are slidably matched with the atomizing pool 101 through the widening sliding holes 103. The atomizing pool 101 is also provided with a feed port 104, and a feeding boost hose 126 is rotatably sealed and connected to the feed port 104. The feeding boost hose 126 is used to transport the coating liquid into the atomizing pool 101. A guide column 117 is coaxially disposed in each exhaust gas inlet 120 . The guide column 117 is located at the rotation axis of the intake impeller 114 and is used to guide external exhaust gas to pass through the intake impeller 114 and enter the exhaust gas inlet 120 .

[0024] The production process of a coated glass disclosed in the present invention is as follows: Colored functional film glass requires at least one or even multiple metal oxides to be doped to form a colored film layer. The materials used for thermal spraying are generally heavy metals in the periodic table, such as salts of metals such as cobalt, nickel, iron, titanium, chromium, vanadium, tin, and indium. Common salts include: acetylacetonate, acetate, ethanol, etc. Common inorganic or organic solvents include hydrochloric acid, acetic acid, ethanol, ammonia, acrylic acid, dimethylamide, methanol, etc. The decomposition temperature of these metal organic salts is generally 300-600°C, and after thermal decomposition, a metal oxide film is deposited on the glass surface. The sprayed atomizing medium is pressurized with air, nitrogen or a mixed gas thereof, and transported to the inside of the atomizing pool 101 through the feeding pressurization hose 126, and then atomized through the atomizing nozzle 106. (By delivering different spraying solutions into the atomizing pool 101, film layers with different colors and functions can be produced, and multiple independent atomizing pools 101 can be set up at the same time, and multiple groups of solutions can be sprayed at the same time, which brings a lot of convenience to the glass surface modification).

[0025] In the float glass production line, the spraying system is generally arranged above the transition roller table at the tin bath outlet or between the transition roller table and the annealing furnace, and the temperature of the glass belt is about 560-600℃. An atomizing assembly is installed above the glass belt, and a protective cover is provided on the outside of the atomizing assembly to prevent the exhaust gas from leaking out, and an air inlet is left to balance the pressure difference inside and outside the protective cover. The compound solution (coating liquid) is mixed with the carrier gas, atomized, and then transported to the glass surface for atomization, so that the atomized particles with a certain energy are sprayed on the hot glass surface, vaporized evenly, and then pyrolysis reaction occurs, and the metal oxide is deposited on the glass plate. The reaction byproducts are discharged outside the coating area (protective cover) through the gas collecting chamber 115. After passing through the exhaust gas treatment system, the solid waste is recycled and treated for environmental protection, and the gas that meets the requirements is discharged into the atmosphere through the chimney.

[0026] Start the air pump connected to the driving air intake pipe 127. At this time, a cylindrical high-speed airflow will be generated in the driving air intake port 116, the air collecting chamber 115 and the exhaust gas exhaust pipe 118. The airflow passes through the exhaust gas impeller 119 and drives the exhaust gas impeller 119 to rotate. At the same time, since the airflow passes through the interior of the air collecting chamber 115 and the pressure inside the high-speed airflow is greater than the pressure inside the air collecting chamber 115 (except for the space occupied by the airflow), the interior of the air collecting chamber 115 will be in a low-pressure environment. Therefore, the external air will enter the air collecting chamber 115 through the exhaust gas inlet port 120, and then follow the high-speed airflow into the exhaust gas exhaust pipe 118, and then be transported to the exhaust gas treatment system through the exhaust gas treatment connecting pipe 121. In this process, the air entering the exhaust gas inlet 120 will drive the intake impeller 114 to rotate (through the guidance of the guide column 117, the intake impeller 114 and the guide column 117 rotate relative to each other. There is no connection relationship between the two, only a rotational coordination relationship. The guide column 117 is fixed on the inner wall of the exhaust gas inlet 120). The main purpose of this step is to provide a rotational power to the intake impeller 114 so that it can overcome its own frictional resistance and rotate. The rotation of the exhaust impeller 119 will drive the input shaft of the drive gearbox 124 to rotate through the transmission belt 123, and the output shaft of the drive gearbox 124 will drive the input shaft of the drive synchronous gear 112 and the planetary gearbox 111 to rotate. The rotation of the input shaft of the planetary gearbox 111 will drive the widening swing arm 110 to rotate. The widening swing arm 110 drives the atomizing pool 101 to slide on the first sliding rod 107 through the widening movable pin 102. Since the first sliding rod 107 and the second sliding rod 108 are arranged vertically, the first sliding rod 107 slides with the atomizing pool 101, and the second sliding rod 108 slides with the sliding support frame 109. At this time, the atomizing pool 101 will slide horizontally in multiple directions relative to the sliding support frame 109, so that the atomizing nozzle 106 can spray a larger area of ​​​​and more uniform coating liquid on the glass.

[0027] The driving synchronous gear 112 to rotate will drive the two intake gear rings 113 to rotate, and the rotation of the two intake gear rings 113 will drive the intake impeller 114 to rotate. The rotation of the intake impeller 114 will drive the exhaust gas generated in the coating area to enter the air collecting chamber 115, so that the exhaust gas can be collected.

Claims

1. A coated glass production process, characterized in that: The following steps are involved: S1. Prepare a coating liquid of a metal organic compound or an inorganic compound into a solution or a suspension; S2, the coating liquid is atomized by the atomizing component to form fine droplets, so that the atomized metal compound droplets are evenly sprayed onto the heated glass surface; S3, the glass surface temperature is maintained between 560-600°C, and the heat of the glass itself is used to cause the metal compounds in the coating solution to undergo a pyrolysis reaction to form a metal oxide film layer; S4. Waste gas generated during the coating process is collected by the atomizing nozzle support seat (105), enters the waste gas treatment system through the waste gas treatment connecting pipe (121), and is purified to meet the standards through solid-liquid-gas separation or high-temperature combustion treatment before being discharged; S5. Quality inspection of the coated glass; The atomizing assembly comprises two symmetrically arranged partitions (128), a spraying portion is arranged between the two partitions (128), the spraying portion comprises an atomizing pool (101), an atomizing nozzle support seat (105) is fixedly connected and arranged on the atomizing pool (101), a plurality of atomizing nozzles (106) are arranged in parallel and equidistantly at the bottom of the atomizing nozzle support seat (105), and are used to atomize the coating liquid, and the atomizing nozzles (106) and the atomizing nozzle support seat (105) are connected in a manner that is easy to disassemble, so as to facilitate adjustment of the atomization degree of the coating liquid; The atomization assembly further comprises a sliding support frame (109), the sliding support frame (109) being fixed on an external support frame (125), a gas collecting chamber (115) being also fixed on the external support frame (125), the gas collecting chamber (115) being provided with a coaxially arranged driving air inlet (116) and an exhaust gas discharge pipe (118), and the gas collecting chamber (115) being further provided with two symmetrically arranged exhaust gas inlets (120) for absorbing exhaust gas; The driving air inlet (116) is fixedly connected to a driving air inlet pipe (127), which is also fixed to the external support frame (125); a flange is provided at one end of the driving air inlet pipe (127) away from the external support frame (125), and is connected to an air pump via the flange to drive the flow of gas in the driving air inlet (116), the air collecting chamber (115) and the exhaust gas discharge pipe (118); An exhaust gas treatment connecting pipe (121) is suspended and fixed to one end of the exhaust gas discharge pipe (118) away from the driving air inlet (116) via an overhead frame (122); a gap is provided between the exhaust gas treatment connecting pipe (121) and the exhaust gas discharge pipe (118); an exhaust gas impeller (119) is rotatably sealed in the gap; A drive gearbox (124) is fixed on the lower surface of the air collecting chamber (115); an input shaft of the drive gearbox (124) is connected to the outer ring of the exhaust impeller (119) via a drive belt (123); and a drive synchronous gear (112) is fixed on the output shaft of the drive gearbox (124).

2. A coated glass production process according to claim 1, characterized in that: An intake impeller (114) is rotatably mounted at the bottom of the two exhaust gas inlets (120); an intake gear ring (113) is fixedly sleeved on the two intake impellers (114); the two intake gear rings (113) are meshed with the driving synchronous gear (112) for transmission; a planetary gearbox (111) is fixed on the sliding support frame (109); an input shaft of the planetary gearbox (111) is fixed to an output shaft of the driving gearbox (124) and the driving synchronous gear (112); and a widening swing arm (110) rotatably matched with the sliding support frame (109) is fixed on the output shaft of the planetary gearbox (111).

3. A coated glass production process according to claim 2, characterized in that: A widening movable pin (102) is fixedly provided on the atomizing pool (101), and the widening movable pin (102) is rotatably matched with an end of the widening swing arm (110) away from the output shaft of the planetary gearbox (111); The atomizing pool (101) is slidably mounted on two parallel first sliding rods (107), two parallel second sliding rods (108) are fixed between the two first sliding rods (107), the two first sliding rods (107) and the two second sliding rods (108) form a rectangular frame, and the two second sliding rods (108) are both slidably mounted on a sliding support frame (109).

4. A coated glass production process according to claim 3, characterized in that: The atomizing pool (101) is provided with two symmetrically arranged widened sliding holes (103), wherein two first sliding rods (107) are slidably matched with the atomizing pool (101) via the widened sliding holes (103). The atomizing pool (101) is also provided with a feed port (104), and a feed boost hose (126) is rotatably sealed and connected to the feed port (104). The feed boost hose (126) is used to transport the coating liquid into the atomizing pool (101).

5. A coated glass production process according to claim 4, characterized in that: A guide column (117) is coaxially arranged in each exhaust gas inlet (120); the guide column (117) is located at the rotation axis of the intake impeller (114) and is used to guide external exhaust gas to pass through the intake impeller (114) and enter the exhaust gas inlet (120).

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