Spray gun for photovoltaic glass edge fire auxiliary combustion and edge fire auxiliary device

Abstract

The utility model relates to the technical field of glass production and manufacturing, and discloses a spray gun for photovoltaic glass edge fire auxiliary combustion and an edge fire auxiliary device.The spray gun for photovoltaic glass edge fire auxiliary combustion comprises a spray gun body and a gun head, and the air inlet end of the spray gun body is used for communicating a gas pipeline and a compressed air pipeline; the gun head is arranged at the air outlet end of the spray gun body and used for spraying flames. A first external thread part is arranged on the outer side wall of the end, facing the spray gun body, of the gun head, a first internal thread part is arranged on the inner wall of the air outlet end of the spray gun body, and the first internal thread part is matched with the first external thread part. And the maintenance cost and the maintenance difficulty of the device are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of glass production and manufacturing, in particular to a spray gun for edge fire auxiliary combustion of photovoltaic glass and an edge fire combustion auxiliary device. Background Art

[0002] Photovoltaic glass is a special type of glass that incorporates solar photovoltaic modules, generating electricity from solar radiation and equipped with current extraction devices and cables. Photovoltaic glass is typically produced using a rolling process. Its production process consists of two main steps: raw sheet production and further processing. Raw sheet production involves mixing, melting, rolling, annealing, and cutting raw materials to produce unprocessed semi-finished photovoltaic sheets, which then undergo further processing.

[0003] Sheet production involves five steps: batching, melting, forming, annealing, and edge inspection. Melting, forming, and annealing are the core components of the sheet production line; any failure in any of these steps can negatively impact product quality and yield. Glass production is highly continuous, and substandard photovoltaic glass products must be remelted and remanufactured, incurring additional costs for manufacturers. Sheet production operates 24 / 7, requiring no downtime. Unstable product quality can disrupt normal production.

[0004] Before the original glass sheets are transported to the annealing kiln for the annealing process, the calendering process needs to be carried out in the kiln. The calendering process is mainly completed in the calendering machine. The performance of the calendering machine and the control of the transverse temperature difference are the decisive factors for the quality of this process.

[0005] In the production of photovoltaic glass sheets, when a calendering machine fails, causing a large temperature difference between the lateral side and the middle of the glass sheet, in order to reduce the temperature difference between the lateral side and the middle of the glass sheet without interrupting production, meet annealing requirements and ensure the quality of the finished glass products, side fire combustion auxiliary equipment is usually installed between the kiln and the annealing kiln to compensate for the heat of the lateral side of the photovoltaic glass sheet with a large temperature difference; however, the structure of the spray gun of most existing side fire combustion auxiliary equipment is complicated, which makes it inconvenient to repair and replace the gun head. Utility Model Content

[0006] In view of this, the utility model provides a spray gun and an edge fire combustion auxiliary device for photovoltaic glass to solve the problem that the spray gun of the edge fire combustion auxiliary equipment has a complex structure and is inconvenient to repair and replace the gun head.

[0007] In a first aspect, the utility model provides a spray gun for photovoltaic glass edge fire auxiliary combustion, which is applied to an edge fire combustion auxiliary device. The spray gun includes:

[0008] The main body of the spray gun, the air inlet end is used to connect the gas pipeline and the compressed air pipeline;

[0009] The gun head is arranged at the air outlet end of the spray gun body and is used to spray flames; a first external threaded portion is provided on the outer side wall of one end of the gun head facing the spray gun body, and a first internal threaded portion is provided on the inner wall of the air outlet end of the spray gun body, and the first internal threaded portion matches the first external threaded portion.

[0010] The spray gun for photovoltaic glass edge fire auxiliary combustion according to the utility model has at least the following beneficial effects:

[0011] By providing a first internal threaded portion on the inner wall of the air outlet end of the spray gun body, and providing a first external threaded portion matching the first internal threaded portion on the gun head, the spray gun body can be detachably connected to the gun head through the threaded connection of the first internal threaded portion and the first external threaded portion. Compared with the fixed installation assisted by a fixing clamp or welding, the connection method of the utility model is easy to assemble and the connection between the spray gun body and the gun head is tight and not easy to loosen, meeting the demand for stable flame spraying to compensate for the heat of the lateral side heating of the glass original piece; at the same time, when the gun head is damaged, it is also convenient to remove the gun head from the spray gun body for repair or replacement, reducing the maintenance cost and difficulty of the spray gun for photovoltaic glass edge fire auxiliary combustion.

[0012] In an optional embodiment, the air outlet end of the spray gun body is provided with an L-shaped elbow, and the first internal thread portion is provided on the inner wall of one end of the vertical portion of the L-shaped elbow facing the gun head.

[0013] In an optional embodiment, the horizontal portion of the L-shaped elbow is detachably connected to the air outlet end of the spray gun body.

[0014] In an optional embodiment, a second internal threaded portion is provided on the inner wall of one end of the horizontal portion of the L-shaped elbow facing the spray gun body, and a second external threaded portion is provided at the air outlet end of the spray gun body, and the second external threaded portion matches the second internal threaded portion.

[0015] In an optional embodiment, the first external thread portion and the second external thread portion are configured as the same thread portion, and the first internal thread portion and the second internal thread portion are configured as the same thread portion.

[0016] In an optional embodiment, a third external threaded portion is provided on one end of the horizontal portion of the L-shaped elbow facing the spray gun body, and a third internal threaded portion is provided on the inner wall of the air outlet end of the spray gun body, and the third internal threaded portion matches the third external threaded portion.

[0017] In an optional embodiment, a quick connector is provided at one end of the spray gun body away from the gun head, and the quick connector is used to connect to a gas pipeline and / or a compressed air pipeline.

[0018] In an optional embodiment, the quick connector is fixed to the spray gun body by welding.

[0019] In an optional embodiment, one end of the spray gun body connected to the quick connector is configured as an inclined section, and the inclined section gradually inclines downward in a direction toward the quick connector.

[0020] In a second aspect, the present invention further provides an edge fire combustion auxiliary device, comprising the spray gun for photovoltaic glass edge fire auxiliary combustion provided in the first aspect above.

[0021] Because the edge fire combustion auxiliary device includes a spray gun for photovoltaic glass edge fire auxiliary combustion, it has the same beneficial effects as the spray gun for photovoltaic glass edge fire auxiliary combustion, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the main structure of a spray gun for photovoltaic glass edge fire auxiliary combustion according to an embodiment of the utility model;

[0024] Figure 2 for Figure 1 A schematic cross-sectional view of the assembly of the gun head and the flame baffle;

[0025] Figure 3 for Figure 1 Schematic diagram of the overhead structure of the middle flame baffle.

[0026] Description of reference numerals:

[0027] 100-spray gun body, 110-inclined section, 200-gun head, 210-air intake hole, 300-L-type elbow, 400-quick connector, 500-flame baffle, 510-flame through hole. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0029] In the description of this embodiment, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this embodiment and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this embodiment. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0031] In the prior art, the spray gun of edge fire auxiliary combustion equipment integrates the gun head 200 and the spray gun body 100 by welding or integral molding. This makes it difficult to repair or replace the gun head 200 if it becomes damaged. To address the above technical drawbacks, the present invention provides a spray gun and an edge fire auxiliary combustion device for photovoltaic glass.

[0032] The following combination Figures 1 to 3 , describing the embodiments of the present utility model.

[0033] According to the first aspect of the embodiment of the utility model, a spray gun for edge fire auxiliary combustion of photovoltaic glass is provided, which is used in an edge fire combustion auxiliary device. The spray gun includes a spray gun body 100 and a gun head 200. The air inlet end of the spray gun body 100 is used to connect the gas pipeline and the compressed air pipeline; the gun head 200 is arranged at the air outlet end of the spray gun body 100, and is used to spray flames; the outer side wall of the gun head 200 facing the spray gun body 100 is provided with a first external threaded portion, and the inner wall of the air outlet end of the spray gun body 100 is provided with a first internal threaded portion, and the first internal threaded portion matches the first external threaded portion.

[0034] The spray gun for auxiliary combustion of photovoltaic glass edge fire in this embodiment is provided with a first internal threaded portion on the inner wall of the air outlet end of the spray gun body 100, and the gun head 200 is provided with a first external threaded portion matching the first internal threaded portion, so that the spray gun body 100 is detachably connected to the gun head 200 through the threaded connection of the first internal threaded portion and the first external threaded portion. Compared with the fixed installation assisted by a fixing clamp or the fixed installation by welding, the connection method of this embodiment is easy to assemble and the connection between the spray gun body 100 and the gun head 200 is tight and not easy to loosen, which meets the demand for stable flame spraying to compensate for the heat of the lateral side heating of the glass original piece; at the same time, when the gun head 200 is damaged, it is also convenient to remove the gun head 200 from the spray gun body 100 for repair or replacement, thereby reducing the maintenance cost and difficulty of the spray gun for auxiliary combustion of photovoltaic glass in this embodiment.

[0035] It should be noted that the spray gun body 100 mixes the fuel gas and compressed air after the fuel gas and compressed air enter the interior thereof, and then transports the mixture to the gun head 200 for combustion to emit flames.

[0036] In some embodiments, an L-shaped elbow 300 is provided at the gas outlet end of the spray gun body 100, and a first internal thread portion is provided on the inner wall of the vertical portion of the L-shaped elbow 300 at one end facing the gun head 200. Through the transition connection of the L-shaped elbow 300, on the one hand, the spray gun body 100 can be arranged horizontally to connect with the gas pipeline and the compressed air pipeline, and on the other hand, the flame-spraying end of the gun head 200 can be arranged vertically, that is, the flame-spraying end of the gun head 200 is arranged perpendicular to the conveying direction of the glass sheet, so as to better heat the lateral side of the glass sheet and perform heat compensation; on the other hand, when the spray gun body 100 outputs the mixed gas formed by the mixture of gas and compressed air through the L-shaped elbow 300, the flow direction will be turned and the flow rate of the mixed gas in the gun head 200 will be reduced, thereby making the combustion more complete and improving the heat compensation effect on the lateral side of the glass sheet.

[0037] Specifically, the horizontal portion of the L-shaped elbow 300 is detachably connected to the air outlet end of the spray gun body 100. When the L-shaped elbow 300 is damaged, it is convenient to disassemble the L-shaped elbow 300 for repair or replacement.

[0038] The specific structure of the detachable connection between the horizontal portion of the L-shaped elbow 300 and the air outlet end of the spray gun body 100 of this embodiment is described in detail below.

[0039] In some embodiments, a second internal threaded portion is provided on the inner wall of the horizontal portion of the L-shaped elbow 300 facing the spray gun body 100, and a second external threaded portion is provided on the air outlet end of the spray gun body 100, and the second external threaded portion matches the second internal threaded portion. When the L-shaped elbow 300 and the spray gun body 100 are assembled into one, it is only necessary to match and connect the second external threaded portion with the second internal threaded portion. Moreover, this connection method is convenient to install compared to using a fixing clamp to assist in fixing the L-shaped elbow 300 and the spray gun body 100, and the connection between the two is stable and not easy to loosen. At the same time, because the second external threaded portion is provided on the outer wall of the air outlet end of the spray gun body 100, when the gun head 200 is removed for maintenance or replacement, the mixed gas remaining in the spray gun body 100 is not likely to corrode the second external threaded portion, thereby extending the service life.

[0040] Specifically, the first external thread portion and the second external thread portion are configured as the same thread portion, and the first internal thread portion and the second internal thread portion are configured as the same thread portion. This configuration eliminates the need to distinguish between the two ends of the L-shaped elbow 300 during assembly and connection between the spray gun body 100 and the gun head 200, thereby facilitating assembly.

[0041] In other embodiments, the horizontal portion of the L-shaped elbow 300 facing the spray gun body 100 is provided with a third external threaded portion, and the inner wall of the air outlet end of the spray gun body 100 is provided with a third internal threaded portion, which mates with the third external threaded portion. By clearly distinguishing the two ends of the L-shaped elbow 300, it serves as a foolproof method, allowing operators to quickly assemble the L-shaped elbow 300 between the spray gun body 100 and the gun head 200.

[0042] In some embodiments, a quick connector 400 is provided at the end of the spray gun body 100 facing away from the gun head 200. This quick connector 400 is used to connect to a gas line. By adding the quick connector 400 to the air inlet end of the spray gun body 100, the gas line can be quickly connected and disconnected without the need for tools. Specifically, the quick connector 400 is also used to connect to a compressed air line. More specifically, a quick connector is provided at the outlet of each gas and compressed air line. The spray gun body 100 connects to the gas and compressed air outlets via a Y-shaped metal hose. One end of the Y-shaped hose connects to the quick connector 400 of the spray gun body 100, while the other end has dual connectors connected to the quick connectors of the gas and compressed air lines, respectively. This allows natural gas and compressed air to be initially mixed through the Y-shaped hose before being delivered to the spray gun body 100.

[0043] Specifically, the quick connector 400 is welded and fixed to the spray gun body 100. Compared to a threaded connection, the quick connector 400 of this embodiment is welded integrally with the spray gun body 100, resulting in a gap-free and secure connection between the quick connector 400 and the spray gun body 100. This effectively prevents the quick connector 400 from loosening or even falling off the spray gun body 100 due to the impact force generated by gas delivery during the process of delivering natural gas, compressed air, or a mixed gas into the spray gun body 100.

[0044] Specifically, one end of the spray gun body 100 connected to the quick connector 400 is provided with an inclined section 110, which gradually slopes downward toward the quick connector 400. The inclined section 110 slows down the flow rate of the gas or compressed air input from the quick connector 400 into the spray gun body 100, allowing the gas and compressed air to be fully mixed.

[0045] like Figure 2 and Figure 3 As shown, in some embodiments, a flame baffle 500 is disposed within the flame end of the gun head 200. A plurality of flame holes 510 are evenly distributed on a cross section of the flame baffle 500 perpendicular to the thickness of the flame baffle 500. The evenly distributed plurality of flame holes 510 allow the mixture of fuel gas and compressed air delivered from the gun body 100 to the gun head 200 to be evenly distributed across the entire cross section of the flame end of the gun head 200. This ensures uniform combustion in the gun of this embodiment, ensuring that substantially the same amount of heat compensation is applied to each position on the lateral side of the original glass sheet, thereby ensuring a heat compensation effect on the lateral side of the original glass sheet.

[0046] like Figure 2 As shown, specifically, a plurality of air intake holes 210 are arranged at intervals along the circumference of the outer wall of the gun head 200. The air intake holes 210 are located at the end of the flame baffle 500 facing the spray gun body 100, and the air intake holes 210 are connected to the interior of the gun head 200. During the combustion process of the spray gun of this embodiment, external gas is sucked into the interior of the gun head 200 through the air intake holes 210 and added to the mixed gas of fuel gas and compressed air to adjust the mixing ratio of the gases. This makes the spray gun of this embodiment burn more uniformly, ensures that substantially the same amount of heat compensation is applied to each position on the lateral side of the original glass piece, and thus ensures a heat compensation effect on the lateral side of the original glass piece.

[0047] It should be noted that the spray gun of this embodiment primarily uses a mixture of natural gas and compressed air as the combustion gas. Natural gas is lighter than air and requires more air for full and even combustion. During the process of emitting flames from the spray gun of this embodiment, the air intake holes 210 facilitate the intake of an appropriate amount of air to mix with the mixture of natural gas and compressed air to achieve optimal combustion, thereby avoiding incomplete combustion and reducing harmful gas emissions, thereby ensuring efficient and safe combustion.

[0048] It should be noted that due to the high flow rate of natural gas at the gun tip, according to the Bernoulli principle in fluid mechanics, the pressure is low when the flow rate is high, and the pressure on the air flow surface is less than the atmospheric pressure outside the suction hole on the outer wall. Therefore, natural gas will not be ejected from the suction hole, but only from the flame-spraying end of the gun tip; this design not only ensures the efficient use of natural gas, but also improves safety.

[0049] Specifically, a fourth internal threaded portion is provided within the flame end of the lance head 200, and a fourth external threaded portion is provided on the outer wall of the flame baffle 500. The fourth external threaded portion and the fourth internal threaded portion mate with each other. When the flame baffle 500 and the lance head 200 are assembled into one, the fourth external threaded portion and the fourth internal threaded portion simply need to be mated and connected. Furthermore, if the flame baffle 500 becomes damaged, it can be easily removed from the flame end of the lance head 200 for repair or replacement.

[0050] According to the second aspect of the embodiment of the present invention, there is also provided an edge fire combustion auxiliary device, comprising the spray gun for photovoltaic glass edge fire auxiliary combustion provided by the first aspect of the embodiment of the present invention. The spray gun of the edge fire combustion auxiliary device of this embodiment is provided with a first internal threaded portion on the inner wall of the air outlet end of the spray gun body 100, and the gun head 200 is provided with a first external threaded portion matching the first internal threaded portion, so that the spray gun body 100 is detachably connected to the gun head 200 through the threaded connection of the first internal threaded portion and the first external threaded portion. Compared with the fixed installation or welding method with the assistance of a fixing clamp, the connection method of the spray gun body 100 and the gun head 200 in this embodiment is easy to assemble and the connection between the two is tight and not easy to loosen, meeting the need for stable flame spraying to heat the lateral side of the glass original sheet for heat compensation; at the same time, when the gun head 200 is damaged, it is also convenient to remove the gun head 200 from the spray gun body 100 for repair or replacement, reducing the maintenance cost and difficulty of the edge fire combustion auxiliary device of this embodiment.

[0051] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A spray gun for photovoltaic glass edge fire auxiliary combustion, used in edge fire combustion auxiliary device, characterized in that: The spray gun comprises: The spray gun body (100) has an air inlet end for connecting a gas pipeline and a compressed air pipeline; A gun head (200) is provided at the air outlet end of the spray gun body (100) and is used to spray flames; a first external threaded portion is provided on the outer side wall of one end of the gun head (200) facing the spray gun body (100), and a first internal threaded portion is provided on the inner wall of the air outlet end of the spray gun body (100), and the first internal threaded portion matches the first external threaded portion.

2. The spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 1, characterized in that: The air outlet end of the spray gun body (100) is provided with an L-shaped elbow (300), and the first internal thread portion is provided on the inner wall of one end of the vertical portion of the L-shaped elbow (300) facing the gun head (200).

3. The spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 2, characterized in that: The horizontal portion of the L-shaped elbow (300) is detachably connected to the air outlet end of the spray gun body (100).

4. The spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 3, characterized in that: A second internal threaded portion is provided on the inner wall of one end of the horizontal portion of the L-shaped elbow (300) facing the spray gun body (100), and a second external threaded portion is provided at the air outlet end of the spray gun body (100), and the second external threaded portion matches the second internal threaded portion.

5. The spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 4, characterized in that: The first external thread portion and the second external thread portion are configured as the same thread portion, and the first internal thread portion and the second internal thread portion are configured as the same thread portion.

6. The spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 3, characterized in that: A third external threaded portion is provided on one end of the horizontal portion of the L-shaped elbow (300) facing the spray gun body (100), and a third internal threaded portion is provided on the inner wall of the air outlet end of the spray gun body (100), and the third internal threaded portion matches the third external threaded portion.

7. A spray gun for photovoltaic glass edge fire auxiliary combustion according to any one of claims 1 to 3, characterized in that: A quick connector (400) is provided at one end of the spray gun body (100) away from the gun head (200), and the quick connector (400) is used to connect a gas pipeline and / or a compressed air pipeline.

8. The spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 7, characterized in that: The quick connector (400) is welded and fixed to the spray gun body (100).

9. The spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 8, characterized in that: One end of the spray gun body (100) connected to the quick connector (400) is provided as an inclined section (110), and the inclined section (110) gradually inclines downward in a direction toward the quick connector (400).

10. A side fire combustion auxiliary device, characterized in that: A spray gun for photovoltaic glass edge fire auxiliary combustion comprising the spray gun described in any one of claims 1 to 9.

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