Energy-saving baking tunnel of coating machine

Abstract

The utility model discloses a kind of energy-saving drying channel of coating machine, including the roller conveyor for conveying plate material being arranged at the discharging end of coating machine, the heat radiation pipe between adjacent rollers is installed in the rack of roller conveyor, and the inside of roller conveyor is further fixed with the reflector between adjacent rollers, below heat radiation pipe;Flat drying cover is installed on roller conveyor, air inlet groove and air outlet groove are respectively arranged at the position of two ends of flat drying cover close to top, and the isolation grid is fixed below air inlet groove and air outlet groove along horizontal direction in the inside of flat drying cover.The utility model is heated to the photovoltaic glass plate material conveyed from below to above by setting heat radiation pipe between adjacent rollers in roller conveyor, so that photovoltaic glass plate material is preferentially heated, not only let coating agent film be heated more evenly, but also can let coating agent film gradually dry and solidify from inside to outside, dry more thoroughly, improve product performance.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, specifically to an energy-saving drying tunnel for a coating machine. Background Technology

[0002] To improve the physical and mechanical properties of photovoltaic glass, we use a coating machine to coat the photovoltaic glass with a coating agent, forming a thin film with specific functions. Then, we use drying equipment to dry and cure the film. Most existing coating machines use top-heating drying methods. However, on the photovoltaic glass output from these machines, the coating agent is located on the upper surface. Top-heating drying methods tend to cause the surface layer of the coating agent film to dry faster than the interior. When the surface layer of the coating agent film is dry and cured, it hinders the expulsion of internal water molecules, affecting the drying quality. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an energy-saving drying tunnel for a coating machine, which solves the problem that the top heating drying method used in existing coating machines is not conducive to the discharge of water molecules inside the coating agent film and affects the drying quality.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] An energy-saving drying tunnel for a coating machine includes a roller conveyor installed at the discharge end of the coating machine for conveying the sheet material. The frame of the roller conveyor is equipped with a heat radiation tube located between adjacent rollers, and a reflector plate located between adjacent rollers and below the heat radiation tube is also fixed inside the roller conveyor.

[0006] The roller conveyor is equipped with a flat drying hood. The flat drying hood has an air inlet slot and an air outlet slot at both ends near the top. Inside the flat drying hood, there are isolation grid plates fixed at equal intervals along the horizontal direction below the air inlet slot and the air outlet slot.

[0007] The flat drying hood has a confluence channel fixed at one end corresponding to the air outlet slot. The top of the confluence channel is connected to an exhaust fan, and the air outlet of the exhaust fan is connected to the exhaust pipe.

[0008] Preferably, the reflector is a folded plate with an integral structure including four inclined plates, and the four inclined plates of the reflector are symmetrically arranged between adjacent rollers. The two inclined plates at the middle position and the two inclined plates at the two sides of the reflector are inclined upward on the side edge of the roller, and the inclination angle of the two inclined plates at the middle position is smaller than the inclination angle of the two inclined plates at the two sides.

[0009] Preferably, the heat radiation tube is an electric radiation tube or a gas radiation tube, and the heat radiation tube includes an S-shaped tube horizontally arranged between adjacent rollers and a connecting tube that connects the adjacent S-shaped tubes, passes through the reflector plate and passes around the roller from below.

[0010] Preferably, the internal height of the flat drying hood does not exceed 15 cm, and the isolation grid is located at an upward position inside the flat drying hood.

[0011] Preferably, the distance between the isolation grid and the top of the inner wall of the flat baking hood is not less than the width of the isolation grid, and the width of the isolation grid is at least five times the gap between adjacent isolation grids.

[0012] Preferably, the air inlet groove and the air outlet groove correspond to the output end and input end of the roller conveyor, respectively.

[0013] Preferably, the manifold is a box-shaped trough arranged longitudinally, and a connecting trough is provided at the position of the manifold corresponding to the air outlet trough. A bucket-shaped gathering cover is also provided on the top of the manifold below the induced draft fan.

[0014] Preferably, the air inlet groove is an integral through groove, and the air outlet groove and the connecting groove are each a plurality of narrow strip grooves arranged at equal intervals, and the directions of the corresponding narrow strip grooves of the air outlet groove and the connecting groove are perpendicular to each other.

[0015] Preferably, insulation boards are fixedly installed around and at the bottom of the roller conveyor, as well as around and at the top of the flat drying hood.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention utilizes heat radiation tubes installed between adjacent rollers in a roller conveyor to heat the photovoltaic glass sheet conveyed from bottom to top. This allows the photovoltaic glass sheet to be heated preferentially before the heat is transferred upwards to the coating agent film. This indirect heat transfer method not only ensures more uniform heating of the coating agent film but also allows the film to gradually dry and solidify from the inside out, resulting in more thorough drying and improved product performance. This solves the problem of existing coating machines using top heating drying methods, which hinder the removal of water molecules from the coating agent film and affect drying quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of a portion of the corresponding air intake slot in this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of a portion of the corresponding air outlet groove in this utility model;

[0022] Figure 5 This is a top view of a partial structure of the corresponding position of the heat radiation tube of this utility model;

[0023] Figure 6 This is a side view of the manifold of this utility model.

[0024] In the diagram: 1. Sheet metal; 2. Roller conveyor; 201. Roller; 3. Heat radiation tube; 301. S-shaped tube; 302. Connecting tube; 4. Reflector; 5. Flat drying hood; 501. Air inlet slot; 502. Air outlet slot; 503. Isolation grid plate; 6. Combination slot; 601. Connecting slot; 602. Gathering hood; 7. Exhaust fan; 8. Exhaust pipe; 9. Insulation board. Detailed Implementation

[0025] 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.

[0026] like Figure 1-6 As shown, this utility model provides a technical solution: an energy-saving drying tunnel for a coating machine, including a roller conveyor 2 installed at the discharge end of the coating machine for conveying the sheet 1. A heat radiation tube 3 located between adjacent rollers 201 is installed in the frame of the roller conveyor 2. The heat radiation tube 3 is an electric radiation tube or a gas radiation tube. The heat radiation tube 3 includes an S-shaped tube 301 horizontally arranged between adjacent rollers 201 and a connecting tube 302 connecting the adjacent S-shaped tubes 301, passing through the reflector plate 4 and passing around the rollers 201 from below, so as to avoid the rollers 201 blocking the ineffective heating, reduce energy waste, save resources, and reduce production costs.

[0027] Inside the roller conveyor 2, there is also a reflector 4 located between adjacent rollers 201 and below the heat radiation tube 3. The reflector 4 is an integral structure consisting of a folded plate with four inclined plates. The material is polished stainless steel or polished aluminum plate. The four inclined plates of the reflector 4 are symmetrically arranged between adjacent rollers 201. The two inclined plates in the middle position and the two inclined plates on the sides of the reflector 4 are inclined upward on the edge of the roller 201. The inclination angle of the two inclined plates in the middle position is smaller than that of the two inclined plates on the sides, which effectively reflects and refracts heat radiation upward and improves energy utilization.

[0028] A flat drying hood 5 is installed on the roller conveyor 2. Insulation plates 9 are fixedly installed on the four sides and bottom of the roller conveyor 2, as well as on the four sides and top of the flat drying hood 5, to improve the insulation effect and reduce the natural heat dissipation rate. The internal height of the flat drying hood 5 does not exceed 15 cm, reducing the internal space and having the advantages of fast heating and low energy demand, thus achieving energy saving. Air inlet grooves 501 and air outlet grooves 502 are respectively set at both ends of the flat drying hood 5 near the top. The air inlet grooves 501 and air outlet grooves 502 correspond to the output end and input end of the roller conveyor 2, respectively. A confluence groove 6 is fixed at one end of the flat drying hood 5 corresponding to the air outlet groove 502.

[0029] The confluence channel 6 is a box-shaped channel arranged longitudinally. A connecting channel 601 is provided at the position corresponding to the air outlet channel 502. A bucket-shaped gathering cover 602 is also provided on the top of the confluence channel 6 below the induced draft fan 7. The air inlet channel 501 is an integral through channel. The air outlet channel 502 and the connecting channel 601 are both multiple narrow strip channels arranged at equal intervals. The directions of the narrow strip channels corresponding to the air outlet channel 502 and the connecting channel 601 are perpendicular to each other, which helps to make the air flow uniformly. The top of the confluence channel 6 is connected to the induced draft fan 7, and the air outlet of the induced draft fan 7 is connected to the exhaust pipe 8.

[0030] Inside the flat drying hood 5, there are equidistant isolation grids 503 located below the air inlet slot 501 and the air outlet slot 502, and the isolation grids 503 are located at an upward position inside the flat drying hood 5. The distance between the isolation grids 503 and the top of the inner wall of the flat drying hood 5 is not less than the width of the isolation grids 503. The width of the isolation grids 503 is at least five times the gap between adjacent isolation grids 503. The lower part is heated, and the hot air rises. The exhaust fan 7 is turned on periodically, or a low-power exhaust fan 7 is turned on continuously. The exhaust fan 7 operates at a low speed, which drives the air above to flow slowly horizontally. This helps to promote the discharge of hot air mixed with water molecules from below, reduce the internal humidity, and improve the drying effect.

[0031] Working principle:

[0032] The roller conveyor 2 transports the coated plate 1 from right to left through the rollers 201. After passing through the flat drying hood 5, the heat radiation tubes 3 between the rollers 201 transfer heat from bottom to top through heat radiation. The plate 1 is heated first and the heat is transferred upward to the coating agent film, so that the coating agent film is heated more evenly, and the coating agent film gradually dries and solidifies from the inside to the outside, resulting in better drying effect and more thorough drying.

[0033] During the drying process, the reflector 4 helps to reflect and refract heat radiation upwards, improving energy utilization and reducing waste. The flat drying hood 5 has a small internal height, which has the advantages of rapid heating and low energy demand, resulting in energy saving. The insulation board 9 improves the insulation effect and reduces the natural heat dissipation rate.

[0034] Heating from below causes the air containing water molecules to rise. With the help of the isolation grid 503, the blower 7 is turned on, which can drive the air above to flow slowly horizontally. This helps to promote the discharge of the hot air containing water molecules that is heated and dried below the isolation grid 503, reduce the humidity inside the flat drying hood 5, and improve the drying effect.

[0035] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving drying tunnel for a coating machine, comprising a roller conveyor (2) installed at the discharge end of the coating machine for conveying sheet metal (1), characterized in that: The roller conveyor (2) has a heat radiation tube (3) installed in the frame between adjacent rollers (201), and a reflector plate (4) is fixed inside the roller conveyor (2) between adjacent rollers (201) and below the heat radiation tube (3). The roller conveyor (2) is equipped with a flat drying hood (5). The flat drying hood (5) has an air inlet groove (501) and an air outlet groove (502) at both ends near the top. Inside the flat drying hood (5), there are isolation grid plates (503) fixed at equal intervals along the horizontal direction below the air inlet groove (501) and the air outlet groove (502). The flat drying hood (5) has a confluence channel (6) fixed at one end corresponding to the air outlet channel (502). The top of the confluence channel (6) is connected to an exhaust fan (7), and the air outlet of the exhaust fan (7) is connected to the exhaust pipe (8).

2. The energy-saving drying tunnel of a coating machine according to claim 1, characterized in that: The reflector (4) is a folded plate with four inclined plates as an integral structure. The four inclined plates of the reflector (4) are symmetrically arranged between adjacent rollers (201). The two inclined plates in the middle position and the two inclined plates on the sides of the reflector (4) are inclined upward on the side edge of the roller (201). The inclination angle of the two inclined plates in the middle position of the reflector (4) is smaller than the inclination angle of the two inclined plates on the sides.

3. The energy-saving drying tunnel of a coating machine according to claim 1, characterized in that: The heat radiation tube (3) is an electric radiation tube or a gas radiation tube. The heat radiation tube (3) includes an S-shaped tube (301) horizontally arranged between adjacent rollers (201) and a connecting tube (302) connecting the adjacent S-shaped tubes (301), passing through the reflector (4) and passing around the rollers (201) from below.

4. The energy-saving drying tunnel of a coating machine according to claim 1, characterized in that: The internal height of the flat baking hood (5) does not exceed 15 cm, and the isolation grid plate (503) is located at an upward position inside the flat baking hood (5).

5. The energy-saving drying tunnel of a coating machine according to claim 1, characterized in that: The distance between the isolation grid plate (503) and the top of the inner wall of the flat baking hood (5) is not less than the width of the isolation grid plate (503), and the width of the isolation grid plate (503) is at least five times the gap between adjacent isolation grid plates (503).

6. The energy-saving drying tunnel of a coating machine according to claim 1, characterized in that: The air inlet groove (501) and air outlet groove (502) correspond to the output end and input end of the roller conveyor (2), respectively.

7. The energy-saving drying tunnel of a coating machine according to claim 1, characterized in that: The confluence channel (6) is a box-shaped channel arranged longitudinally. A connecting channel (601) is provided at the position of the outlet channel (502) of the confluence channel (6). A bucket-shaped gathering cover (602) is also provided on the top of the confluence channel (6) below the induced draft fan (7).

8. The energy-saving drying tunnel of a coating machine according to claim 7, characterized in that: The air inlet groove (501) is an integral through groove, and the air outlet groove (502) and the connecting groove (601) are both multiple narrow grooves arranged at equal intervals, and the directions of the narrow grooves corresponding to the air outlet groove (502) and the connecting groove (601) are perpendicular to each other.

9. The energy-saving drying tunnel of a coating machine according to claim 1, characterized in that: Insulation plates (9) are fixedly installed around and at the bottom of the roller conveyor (2) and around and at the top of the flat drying hood (5).

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