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

Abstract

The invention 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 with 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 flaming baffle is arranged in the flaming end of the gun head, and a plurality of flaming through holes are uniformly distributed in the section, perpendicular to the thickness direction, of the flaming baffle; a plurality of air suction holes are formed in the outer side wall of the gun head in the circumferential direction at intervals, and the air suction holes are located in the end, facing the spray gun body, of the flaming baffle. Therefore, the heat compensation effect on the transverse side of the raw glass sheet is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of glass production and manufacturing, and 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 glass that can generate electricity using solar radiation by pressing solar photovoltaic modules into it, and has relevant current extraction devices and cables. Photovoltaic glass is usually prepared by calendering. Its production process is mainly divided into two links: raw sheet production and deep processing. Raw sheet production is to obtain unprocessed photovoltaic raw sheet semi-finished products after the raw materials are mixed, melted, calendered, annealed and cut in five steps, and then deep processing is carried out.

[0003] The production of raw glass includes five processes: batching, melting, forming, annealing, and edge detection. Among them, melting, forming, and annealing are the core links of the raw glass production line. Any problem in any link will affect the quality and production rate of the product. The continuity of glass production is very strong. The finished photovoltaic glass products with poor quality need to be remelted and remade, which will bring additional costs to the production company. The normal production of raw glass products is 24 hours a day and cannot be stopped. If the product quality is unstable, the production cannot proceed normally.

[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 lateral temperature difference are the decisive factors for the quality of this process.

[0005] In the production of photovoltaic glass sheets, when a calender 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 and meet annealing requirements to ensure the quality of the finished glass products, a side fire combustion auxiliary equipment is usually installed between the kiln and the annealing kiln to heat the lateral side of the photovoltaic glass sheet with a large temperature difference for heat compensation; however, the spray guns of most existing side fire combustion auxiliary equipment cannot maintain uniform combustion for a long time, resulting in poor heat compensation effect on the lateral side of the glass sheet. Summary of the invention

[0006] In view of this, the present invention provides a spray gun and an edge fire combustion auxiliary device for photovoltaic glass edge fire auxiliary combustion to solve the problem that the spray gun of the edge fire combustion auxiliary equipment cannot maintain uniform combustion for a long time, resulting in poor heat compensation effect on the lateral side of the glass original sheet.

[0007] In a first aspect, the present invention provides a spray gun for photovoltaic glass edge fire auxiliary combustion, which is applied to an edge fire combustion auxiliary device, and the spray gun comprises:

[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 flame spray baffle is arranged inside the flame spray end of the gun head, and a plurality of flame spray through holes are evenly distributed on the cross section of the flame spray baffle perpendicular to its thickness direction; a plurality of air suction holes are arranged at intervals along the circumferential direction on the outer wall of the gun head, and the air suction holes are located at one end of the flame spray baffle facing the spray gun body.

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

[0011] By arranging a flame-spraying baffle in the flame-spraying end of the gun head, a plurality of flame-spraying through holes evenly distributed on the cross section of the flame-spraying baffle enable the mixed gas of natural gas and compressed air transported by the spray gun body to the gun head to be evenly distributed on the entire cross section of the flame-spraying end of the gun head, so that the spray gun burns evenly; at the same time, in the process of burning and spraying flames of the spray gun, the air intake hole sucks the external gas into the gun head and adds it to the mixed gas of natural gas and compressed air to adjust the mixing ratio of the gas, so that the spray gun can maintain uniform combustion for a long time, ensuring that basically the same amount of heat compensation is applied to each position on the lateral side of the glass original piece, thereby ensuring the heat compensation effect on the lateral side of the glass original piece.

[0012] In an optional embodiment, a first internal threaded portion is provided in the flame spraying end of the gun head, and a first external threaded portion is provided on the outer side wall of the flame spraying baffle, and the first external threaded portion matches the first internal threaded portion.

[0013] In an optional embodiment, an L-shaped elbow is provided between the spray gun body and the gun head, the horizontal portion of the L-shaped elbow is connected to the air inlet end of the spray gun body, and the gun head is connected to the vertical portion of the L-shaped elbow.

[0014] In an optional embodiment, the gun head is detachably connected to the vertical portion of the L-shaped elbow;

[0015] And / or, the horizontal portion of the L-shaped elbow is detachably connected to the air outlet end of the spray gun body.

[0016] In an optional embodiment, a second external threaded portion is provided on an outer side wall of one end of the gun head facing the L-shaped elbow, and a second internal threaded portion is provided on an inner side wall of one end of the vertical portion of the L-shaped elbow facing the gun head, and the second internal threaded portion matches the second external threaded portion;

[0017] Or, a third internal threaded portion is provided on the inner wall of one end of the gun head facing the L-shaped elbow, and a third external threaded portion is provided on the outer wall of one end of the vertical portion of the L-shaped elbow facing the gun head, and the third external threaded portion matches the third internal threaded portion.

[0018] In an optional embodiment, a fourth external threaded portion is provided on the outer side wall of the air outlet end of the spray gun body, a fourth 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 the fourth internal threaded portion matches the fourth external threaded portion;

[0019] Or, a fifth internal threaded portion is provided on the inner wall of the air outlet end of the spray gun body, and a fifth external threaded portion is provided on the outer wall of one end of the horizontal portion of the L-shaped elbow facing the spray gun body, and the fifth external threaded portion matches the fifth internal threaded portion.

[0020] In an optional embodiment, the second external threaded portion and the fourth external threaded portion are configured as the same threaded portion, and the second internal threaded portion and the fourth internal threaded portion are configured as the same threaded portion.

[0021] 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 the gas pipeline and / or the compressed air pipeline.

[0022] In a second aspect, the present invention further provides an edge fire combustion auxiliary device, comprising the spray gun for edge fire auxiliary combustion of photovoltaic glass provided in the first aspect above.

[0023] 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.

[0024] In an optional embodiment, a gas pipeline is further included, and a natural gas edge fire combustion auxiliary component is arranged between the gas pipeline and the air inlet end of the spray gun body, and the natural gas edge fire combustion auxiliary component includes:

[0025] A gas uniform distributor, the gas inlet of which is connected to the gas pipeline;

[0026] The gas delivery branch pipe is connected to the gas outlet of the gas evenly distributed device. One end of the gas delivery branch pipe away from the gas evenly distributed device is connected to the spray gun body. The gas delivery branch pipe is provided with a first ball valve, and the first ball valve is electrically connected to the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] 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 present invention;

[0029] Figure 2 for Figure 1 A schematic cross-sectional view of the assembly of the middle gun head and the flamethrower baffle;

[0030] Figure 3 for Figure 1 A schematic diagram of the structure of the middle flame baffle from a top view;

[0031] Figure 4 The present invention is a schematic structural diagram of a natural gas edge fire combustion auxiliary component in an edge fire combustion auxiliary device according to an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 100-spray gun body, 110-inclined section;

[0034] 200-gun head, 210-air intake hole;

[0035] 300-flame-spraying baffle, 310-flame-spraying through hole;

[0036] 400-L elbow;

[0037] 500-Quick connector;

[0038] 600-gas uniform distributor, 610-detection interface, 620-pressure gauge;

[0039] 700-gas transmission branch pipe, 710-first ball valve, 720-check valve;

[0040] 800-intake pipe, 810-second ball valve;

[0041] 900-first branch pipe, 910-stop valve. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0043] In the description of this embodiment, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting this embodiment. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] In the description of this embodiment, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0045] The spray gun of the edge fire combustion auxiliary equipment in the related art mainly uses a mixture of natural gas and compressed air as the combustion gas for combustion. Natural gas is lighter than air and requires more air to fully burn so that the combustion is uniform. However, after a period of combustion, the air at the flame spraying end of the spray gun in the related art is reduced and cannot be mixed with the mixture of natural gas and compressed air to achieve the best combustion effect, so that the spray gun cannot maintain uniform combustion for a long time, resulting in poor heat compensation effect on the lateral side of the original glass sheet. In order to solve the above technical defects, a spray gun for edge fire auxiliary combustion of photovoltaic glass and an edge fire combustion auxiliary device according to an embodiment of the present invention are provided.

[0046] Combine the following Figures 1 to 4 , describing an embodiment of the present invention.

[0047] According to a first aspect of an embodiment of the present invention, Figures 1 to 3 The figure shows a spray gun for photovoltaic glass edge fire auxiliary combustion, which is applied to edge fire combustion auxiliary device, and 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; a fire-spraying baffle 300 is arranged in the fire-spraying end of the gun head 200, and a plurality of fire-spraying through holes 310 are evenly distributed on the cross section of the fire-spraying baffle 300 perpendicular to its thickness direction; a plurality of air suction holes 210 are arranged at intervals along the circumferential direction on the outer wall of the gun head 200, and the air suction holes 210 connect the inside of the gun head 200 with the outside, and the air suction holes 210 are located at one end of the fire-spraying baffle 300 facing the spray gun body 100.

[0048] The spray gun for auxiliary combustion of photovoltaic glass edge fire in this embodiment is provided with a fire baffle 300 in the fire end of the gun head 200. The multiple fire through holes 310 evenly distributed on the cross section of the fire baffle 300 make the mixed gas of natural gas and compressed air delivered to the gun head 200 by the spray gun body 100 be evenly distributed on the entire cross section of the fire end of the gun head 200, so that the spray gun of this embodiment burns evenly; at the same time, in the process of the spray gun of this embodiment burning and spraying flames, the air intake hole 210 sucks the external gas into the inside of the gun head 200 and adds it to the mixed gas of natural gas and compressed air to adjust the mixing ratio of the gas, so that the spray gun of this embodiment can maintain uniform combustion for a long time, ensuring that basically the same amount of heat compensation is applied to each position on the lateral side of the glass original piece, thereby ensuring the heat compensation effect on the lateral side of the glass original piece.

[0049] It should be noted that, during the process of the spray gun of this embodiment burning and spraying flames, the air intake hole 210 helps to inhale an appropriate amount of air and mix it with the mixed gas of natural gas and compressed air to achieve the best combustion effect, thereby avoiding incomplete combustion and reducing harmful gas emissions, ensuring efficient and safe combustion.

[0050] It should be noted that since the flow rate of natural gas at the gun head 200 is high, 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 lower than the atmospheric pressure outside the air intake hole 210 of the outer wall. Therefore, natural gas will not be ejected from the air intake hole 210, but will only be ejected from the flame-spraying end of the gun head 200. This design not only ensures the efficient use of natural gas, but also improves safety.

[0051] It should be noted that the spray gun body 100 mixes the natural gas and the compressed air after the natural gas and the compressed air enter the spray gun body 100 , and then transmits the mixture to the spray gun head 200 for combustion and spraying out flames.

[0052] In some embodiments, a first internal threaded portion is provided in the flame spraying end of the gun head 200, and a first external threaded portion is provided on the outer side wall of the flame spraying baffle 300, and the first external threaded portion matches the first internal threaded portion. The flame spraying baffle 300 is detachably connected to the gun head 200 by threaded connection of the first external threaded portion and the first internal threaded portion. Compared with the fixed installation by welding, the connection method of this embodiment is easy to assemble, which can ensure that the flame spraying baffle 300 and the gun head 200 are tightly connected and not easy to loosen, and meet the requirements of heat compensation for the lateral heating of the glass original piece by the stable flame spraying; and when the flame spraying baffle 300 is damaged, it is convenient to remove the flame spraying baffle 300 from the gun head 200 for repair or replacement, thereby reducing the maintenance cost and difficulty of the spray gun of this embodiment.

[0053] In some embodiments, an L-shaped elbow 400 is provided between the spray gun body 100 and the gun head 200, the horizontal portion of the L-shaped elbow 400 is connected to the air inlet end of the spray gun body 100, and the gun head 200 is connected to the vertical portion of the L-shaped elbow 400. Through the transition connection of the L-shaped elbow 400, on the one hand, the spray gun body 100 can be arranged horizontally so as to be connected with the gas pipeline and the compressed air pipeline, and 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 original piece, so as to better heat the lateral side of the glass original piece for heat compensation; on the other hand, when the spray gun body 100 outputs the mixed gas formed by mixing natural gas and compressed air through the L-shaped elbow 400, the flow direction will be turned and the flow rate of the mixed gas in the gun head 200 will be reduced, so that the combustion is more complete and the heat compensation effect on the lateral side of the glass original piece is improved.

[0054] Specifically, the gun head 200 is detachably connected to the vertical portion of the L-shaped elbow 400. When the gun head 200 is damaged, it is convenient to disassemble the gun head 200 for repair or replacement.

[0055] Specifically, the horizontal portion of the L-shaped elbow 400 is detachably connected to the gas outlet end of the spray gun body 100. When the L-shaped elbow 400 is damaged, it is convenient to disassemble the L-shaped elbow 400 for repair or replacement.

[0056] The specific structure of the detachable connection between the horizontal portion of the L-shaped elbow 400 and the gun head 200 and the specific structure of the detachable connection between the horizontal portion of the L-shaped elbow 400 and the air outlet end of the spray gun body 100 of this embodiment are described in detail below.

[0057] In some embodiments, the outer side wall of the end of the gun head 200 facing the L-shaped elbow 400 is provided with a second external threaded portion, and the inner side wall of the end of the vertical portion of the L-shaped elbow 400 facing the gun head 200 is provided with a second internal threaded portion, and the second internal threaded portion matches the second external threaded portion. The gun head 200 is detachably connected to the L-shaped elbow 400 by threading the second external threaded portion and the second internal threaded portion. Compared with the fixed installation assisted by the fixing clamp, the connection method of this embodiment is easy to assemble, which can ensure that the connection between the gun head 200 and the L-shaped elbow 400 is not easy to loosen, and meet the requirements of heat compensation for the lateral heating of the glass original piece by the stable spraying flame; and when the gun head 200 is damaged, it is convenient to remove the gun head 200 from the L-shaped elbow 400 for repair or replacement, reducing the repair cost and difficulty of the spray gun of this embodiment.

[0058] Specifically, the outer wall of the air outlet end of the spray gun body 100 is provided with a fourth external threaded portion, and the inner wall of the horizontal portion of the L-shaped elbow 400 facing the end of the spray gun body 100 is provided with a fourth internal threaded portion, and the fourth internal threaded portion and the fourth external threaded portion match. When the L-shaped elbow 400 and the spray gun body 100 are assembled into one, it is only necessary to match and connect the fourth external threaded portion with the fourth internal threaded portion; and this connection method is convenient to install compared to using a fixing clamp to assist in fixing the L-shaped elbow 400 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 fourth 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 residual mixed gas in the spray gun body 100 is not easy to corrode the fourth external threaded portion, thereby extending the service life.

[0059] Specifically, the second external threaded portion and the fourth external threaded portion are configured as the same threaded portion, and the second internal threaded portion and the fourth internal threaded portion are configured as the same threaded portion. In this way, when the L-shaped elbow 400 is assembled and connected between the spray gun body 100 and the gun head 200, it is not necessary to distinguish the two ends of the L-shaped elbow 400, which is more convenient for assembly.

[0060] In other embodiments, the outer wall of the end of the gun head 200 facing the L-shaped elbow 400 is provided with a second external threaded portion, the inner wall of the vertical portion of the L-shaped elbow 400 facing the end of the gun head 200 is provided with a second internal threaded portion, and the second internal threaded portion matches the second external threaded portion; the inner wall of the air outlet end of the spray gun body 100 is provided with a fifth internal threaded portion, and the outer wall of the horizontal portion of the L-shaped elbow 400 facing the end of the spray gun body 100 is provided with a fifth external threaded portion, and the fifth external threaded portion matches the fifth internal threaded portion. By clearly distinguishing the two ends of the L-shaped elbow 400, it plays a fool-proof role, so that the operator can quickly assemble and connect the L-shaped elbow 400 between the spray gun body 100 and the gun head 200.

[0061] In other embodiments, the inner wall of one end of the gun head 200 facing the L-shaped elbow 400 is provided with a third internal threaded portion, and the outer wall of one end of the vertical portion of the L-shaped elbow 400 facing the gun head 200 is provided with a third external threaded portion, and the third external threaded portion matches the third internal threaded portion; the outer wall of the gas outlet end of the spray gun body 100 is provided with a fourth external threaded portion, and the inner wall of one end of the horizontal portion of the L-shaped elbow 400 facing the spray gun body 100 is provided with a fourth internal threaded portion, and the fourth internal threaded portion matches the fourth external threaded portion. By clearly distinguishing the two ends of the L-shaped elbow 400, it plays a fool-proof role, so that the operator can quickly assemble and connect the L-shaped elbow 400 between the spray gun body 100 and the gun head 200.

[0062] In other embodiments, the inner wall of the end of the gun head 200 facing the L-shaped elbow 400 is provided with a third internal threaded portion, and the outer wall of the vertical portion of the L-shaped elbow 400 facing the end of the gun head 200 is provided with a third external threaded portion, and the third external threaded portion matches the third internal threaded portion; the inner wall of the air outlet end of the spray gun body 100 is provided with a fifth internal threaded portion, and the outer wall of the horizontal portion of the L-shaped elbow 400 facing the end of the spray gun body 100 is provided with a fifth external threaded portion, and the fifth external threaded portion matches the fifth internal threaded portion; the third internal threaded portion and the fifth internal threaded portion are set to the same threaded portion, and the third external threaded portion and the fifth external threaded portion are set to the same threaded portion. In this way, in the process of assembling and connecting the L-shaped elbow 400 between the spray gun body 100 and the gun head 200, there is no need to distinguish the two ends of the L-shaped elbow 400, which is more convenient for assembly.

[0063] like Figure 1 As shown, in some embodiments, a quick connector 500 is provided at one end of the spray gun body 100 away from the gun head 200, and the quick connector 500 is used to connect the gas pipeline. By adding a quick connector 500 to the air inlet end of the spray gun body 100, it is possible to quickly connect or disconnect with the gas pipeline without the need for tools. Specifically, the quick connector 500 is also used to connect the compressed air pipeline. More specifically, a quick connector 500 is provided at the air outlet end of the gas pipeline and the compressed air pipeline, and the spray gun body 100 is connected to the air outlet end of the gas pipeline and the compressed air pipeline through a "Y"-shaped metal hose. One end of the "Y"-shaped metal hose is connected to the quick connector 500 of the spray gun body 100, and the double interfaces at the other end are respectively connected to the quick connectors 500 of the gas pipeline and the compressed air pipeline; so that the natural gas and the compressed air are preliminarily mixed through the "Y"-shaped metal hose and then transported to the spray gun body 100.

[0064] Specifically, the quick connector 500 is welded and fixed to the spray gun body 100. Compared with the threaded connection, the quick connector 500 of this embodiment is welded to the spray gun body 100 as a whole, so that there is no gap at the connection between the quick connector 500 and the spray gun body 100 and the connection is tight, and in the process of conveying natural gas or compressed air or a mixture of natural gas and compressed air into the spray gun body 100, the quick connector 500 can be effectively prevented from loosening or even falling off from the spray gun body 100 under the impact force generated by gas delivery.

[0065] like Figure 1 As shown, specifically, one end of the spray gun body 100 connected to the quick connector 500 is provided with an inclined section 110, and the inclined section 110 gradually inclines downward in the direction toward the quick connector 500. The inclined section 110 slows down the flow rate of the natural gas or compressed air or the mixed gas of natural gas and compressed air input from the quick connector 500 into the interior of the spray gun body 100, so that the natural gas and the compressed air are more fully mixed.

[0066] According to a second aspect of the embodiment of the present invention, Figures 1 to 3 The side fire combustion auxiliary device is also provided, including the spray gun for photovoltaic glass side fire auxiliary combustion provided by the first aspect of the embodiment of the present invention. The spray gun of the side fire combustion auxiliary device of this embodiment is provided with a flame baffle 300 in the flame spray end of the gun head 200, and multiple flame spray holes 310 evenly distributed on the cross section of the flame baffle 300 make the mixed gas of natural gas and compressed air delivered to the gun head 200 by the spray gun body 100 evenly distributed on the entire cross section of the flame spray end of the gun head 200, so that the spray gun in this embodiment burns evenly; at the same time, in the process of burning and spraying flames in the side fire combustion auxiliary device of this embodiment, the air intake hole 210 sucks the external gas into the inside of the gun head 200 and adds it to the mixed gas of natural gas and compressed air to adjust the mixing ratio of the gas, so that the spray gun of this embodiment keeps burning evenly for a long time, ensuring that basically the same amount of heat compensation is applied to each position on the lateral side of the glass original piece, thereby ensuring the heat compensation effect on the lateral side of the glass original piece.

[0067] like Figure 4 As shown, in some embodiments, the edge fire combustion auxiliary device also includes a gas pipeline, and a natural gas edge fire combustion auxiliary component is arranged between the gas pipeline and the air inlet end of the spray gun body 100, and the natural gas edge fire combustion auxiliary component includes a gas distributor 600, and the air inlet of the gas distributor 600 is connected to the gas pipeline; the air outlet of the gas distributor 600 is connected to a gas branch pipe 700, and the end of the gas branch pipe 700 away from the gas distributor 600 is connected to the spray gun body 100, and the gas branch pipe 700 is provided with a first ball valve 710, and the first ball valve 710 is electrically connected to a controller. When a malfunction of the calender causes a large temperature difference between the lateral side and the middle of the glass sheet, the controller can flexibly adjust the opening of the first ball valve 710 according to the actual temperature difference, that is, control the amount of natural gas delivered to the spray gun per unit time, thereby adjusting the heat output by the spray gun to the lateral side of the glass sheet, performing heat compensation on the lateral side of the glass sheet so that the temperature of the lateral side of the glass sheet rises, and reducing the temperature difference between the lateral side and the middle of the glass sheet to meet the annealing requirements, ensuring that there is no need to interrupt production when a malfunction of the calender causes a large temperature difference between the lateral side and the middle of the glass sheet, thereby ensuring the continuity of production and avoiding large economic losses. A gas distributor 600 is connected between the gas branch pipe 700 and the fuel gas pipeline. The gas distributor 600 can evenly distribute the natural gas entering from the gas inlet over the entire cross-section of the gas distributor 600, thereby stabilizing the natural gas before entering the gas branch pipe 700, ensuring that the spray gun stably outputs the set heat to the lateral side of the glass sheet, thereby ensuring that the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet is reduced to meet the annealing requirements.

[0068] like Figure 4 As shown, specifically, the gas uniform distributor 600 is provided with multiple gas outlets, preferably six here, and the six gas outlets of the gas uniform distributor 600 are connected to a corresponding gas branch pipe 700, and each gas branch pipe 700 is connected to a spray gun at one end away from the gas uniform distributor 600, and the multiple spray guns are arranged at intervals along the conveying direction of the glass original sheet. Six gas outlets are arranged at intervals along the conveying direction of the glass sheet on the gas distributor 600, and each gas outlet is connected to a spray gun through a gas supply branch pipe 700 with a first ball valve 710. When a malfunction of the calender causes a large temperature difference between the lateral side and the middle of the glass sheet, the controller can flexibly adjust the opening of the first ball valve 710 located at different positions along the conveying direction according to the actual temperature difference, that is, control the amount of gas delivered to the spray gun per unit time, thereby adjusting the heat output by the spray gun to the lateral side of the glass sheet, performing heat compensation on the lateral side of the glass sheet so that the temperature of the lateral side of the glass sheet rises, and reducing the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet to meet the requirements of high-quality annealing, ensuring that there is no need to interrupt production when a malfunction of the calender causes a large temperature difference between the lateral side and the middle of the glass sheet, thereby ensuring the continuity of production and avoiding large economic losses. A gas distributor 600 is also connected between the six gas branch pipes 700 of the natural gas edge fire combustion auxiliary component and the gas pipeline. The gas distributor 600 can evenly distribute the gas entering from the air inlet over the entire cross-section of the gas distributor 600, thereby stabilizing the gas before entering each gas branch pipe 700, and ensuring that the amount of gas delivered to the gas branch pipes 700 at different positions along the delivery direction is basically the same, ensuring that the spray guns at different positions along the delivery direction stably output the same heat to the lateral side of the glass sheet, thereby ensuring that the temperature difference between the lateral side of the glass sheet and the middle of the glass sheet is reduced to meet the requirements of high-quality annealing.

[0069] In specific applications, the number of gas branch pipes 700 can be reasonably increased or decreased according to the heat compensation requirements to be met; for example, in other embodiments, the gas branch pipes 700 are provided with two, three, four, five or seven or other numbers.

[0070] It should be noted that existing photovoltaic glass is formed by calendering. The molten glass flows out from the branch lip brick of the kiln into the calender. The calender passes through two calender rollers to squeeze and form a solid glass sheet. Since the temperature in the middle of the molten glass is high when it flows out, and the temperature on both sides is low, it is bound to cause a lateral temperature difference. During the cooling process of the glass sheet in the annealing kiln, it is also necessary to ensure that the lateral temperature difference of the glass sheet is small to facilitate the annealing of the glass. If the temperature difference between the lateral side and the middle of the glass sheet is large, annealing in the annealing kiln will have a fatal impact on the final quality of the glass.

[0071] like Figure 4 As shown, specifically, the air inlet end of the gas distributor 600 is connected to the gas pipeline through the air inlet pipeline 800, and the air inlet pipeline 800 is provided with a second ball valve 810, and the second ball valve 810 is used to control the on-off of the air inlet pipeline 800. When there is no need to perform heat compensation on the lateral side of the original glass sheet, the second ball valve 810 is closed to disconnect the air inlet pipeline 800, ensuring that the gas in the gas pipeline will not be delivered to the gas distributor 600, so that the edge fire combustion auxiliary device of this embodiment can be reliably and accurately switched to the closed state. It is also possible to control the opening of the second ball valve 810 when performing heat compensation on the lateral side of the original glass sheet, so as to control the amount of natural gas delivered to the gas distributor 600 per unit time, thereby adjusting the heat output by the burner to the lateral side of the original glass sheet to meet different temperature compensation requirements.

[0072] Specifically, the gas distributor 600 is provided with a detection interface 610, and the detection interface 610 is provided with a pressure gauge 620. The pressure gauge 620 displays the pressure inside the gas distributor 600, so that the operator can observe and detect whether the gas distributor 600 has leakage and other problems, and adjust the gas pipeline pressure ratio.

[0073] Optionally, the detection interface 610 and the pressure gauge 620 are connected through the first branch pipe 900, and a stop valve 910 is provided on the first branch pipe 900, and the stop valve 910 is used to control the on and off of the first branch pipe 900. When the pressure gauge 620 is damaged and the pressure gauge 620 is removed for repair or replacement, the stop valve 910 can be closed to disconnect the first branch pipe 900, effectively preventing the gas in the gas uniform distributor 600 from leaking to the outside through the first branch pipe 900 during the process of removing the pressure gauge 620 for repair or replacement.

[0074] Optionally, a check valve 720 is provided on the gas branch pipe 700. The check valve 720 can prevent the gas from flowing back or reversely from the burner through the gas branch pipe 700 back to the gas distributor 600, ensuring that the gas can only flow in one direction in the gas branch pipe 700, ensuring the safety and stability of the edge fire combustion auxiliary device of this embodiment.

[0075] The operating principle of the edge fire combustion auxiliary device of this embodiment is as follows:

[0076] Obtaining a first temperature difference between a lateral side and a middle portion of a glass sheet output from a furnace;

[0077] The controller compares the first temperature difference with the first standard temperature difference to obtain a first compensation adjustment value, and adjusts the opening of the first ball valve 710 according to the first compensation adjustment value, so that the spray gun heats the lateral side of the glass sheet for corresponding heat compensation, ensuring that the temperature difference between the lateral side and the middle of the glass sheet entering the annealing furnace meets the requirements of high-quality annealing.

[0078] It should be noted that the first standard temperature difference refers to the temperature difference between the lateral side and the middle of the glass sheet that meets the high-quality annealing requirements.

[0079] It should be noted that the lateral side temperature and the middle temperature of the glass sheet output from the kiln are respectively detected by the first temperature sensor and the second temperature sensor, and the first temperature sensor and the second temperature sensor respectively transmit the two measured temperature values ​​to the controller, and the controller calculates the first temperature difference based on the two temperature values.

[0080] Although the embodiments of the present invention have been described in conjunction with 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 are all within the scope defined by the appended claims.

Claims

1. A spray gun for photovoltaic glass edge fire auxiliary combustion, applied to 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 arranged at the gas outlet end of the spray gun body (100) and is used to spray flames; a flame spraying baffle (300) is arranged inside the flame spraying end of the gun head (200), and a plurality of flame spraying through holes (310) are evenly distributed on the cross section of the flame spraying baffle (300) perpendicular to the thickness direction thereof; a plurality of air suction holes (210) are arranged at intervals along the circumferential direction on the outer wall of the gun head (200), and the air suction holes (210) are located at one end of the flame spraying baffle (300) facing the spray gun body (100).

2. A spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 1, characterized in that: A first internal threaded portion is provided in the flame spraying end of the gun head (200), and a first external threaded portion is provided on the outer side wall of the flame spraying baffle (300), and the first external threaded portion matches the first internal threaded portion.

3. A spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 1, characterized in that: An L-shaped elbow (400) is arranged between the spray gun body (100) and the gun head (200), the horizontal part of the L-shaped elbow (400) is connected to the air inlet end of the spray gun body (100), and the gun head (200) is connected to the vertical part of the L-shaped elbow (400).

4. A spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 3, characterized in that: The gun head (200) is detachably connected to the vertical portion of the L-shaped elbow (400); And / or, the horizontal portion of the L-shaped elbow (400) is detachably connected to the air outlet end of the spray gun body (100).

5. A spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 4, characterized in that: A second external threaded portion is provided on the outer wall of one end of the gun head (200) facing the L-shaped elbow (400), and a second internal threaded portion is provided on the inner wall of one end of the vertical portion of the L-shaped elbow (400) facing the gun head (200), wherein the second internal threaded portion matches the second external threaded portion; Alternatively, a third internal threaded portion is provided on the inner wall of one end of the gun head (200) facing the L-shaped elbow (400), and a third external threaded portion is provided on the outer wall of one end of the vertical portion of the L-shaped elbow (400) facing the gun head (200), and the third external threaded portion matches the third internal threaded portion.

6. A spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 5, characterized in that: The outer wall of the air outlet end of the spray gun body (100) is provided with a fourth external threaded portion, and the inner wall of the horizontal portion of the L-shaped elbow (400) facing the end of the spray gun body (100) is provided with a fourth internal threaded portion, and the fourth internal threaded portion matches the fourth external threaded portion; Alternatively, a fifth internal threaded portion is provided on the inner wall of the air outlet end of the spray gun body (100), and a fifth external threaded portion is provided on the outer wall of one end of the horizontal portion of the L-shaped elbow (400) facing the spray gun body (100), and the fifth external threaded portion matches the fifth internal threaded portion.

7. A spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 6, characterized in that: The second external thread portion and the fourth external thread portion are provided as the same thread portion, and the second internal thread portion and the fourth internal thread portion are provided as the same thread portion.

8. The spray gun for photovoltaic glass edge fire auxiliary combustion according to claim 1, characterized in that: A quick connector (500) is provided at one end of the spray gun body (100) away from the gun head (200), and the quick connector (500) is used to connect a gas pipeline and / or a compressed air pipeline.

9. A side-fire combustion auxiliary device, characterized in that: A spray gun for photovoltaic glass edge fire auxiliary combustion comprising any one of claims 1 to 8.

10. The edge fire combustion auxiliary device according to claim 9, characterized in that: It also includes a gas pipeline, and a natural gas edge fire combustion auxiliary component is arranged between the gas pipeline and the gas inlet end of the spray gun body (100), and the natural gas edge fire combustion auxiliary component includes: A gas uniform distributor (600), the gas inlet of which is connected to the gas pipeline; The gas delivery branch pipe (700) is connected to the gas outlet of the gas uniform distributor (600), and one end of the gas delivery branch pipe (700) away from the gas uniform distributor (600) is connected to the spray gun body (100). The gas delivery branch pipe (700) is provided with a first ball valve (710), and the first ball valve (710) is electrically connected to a controller.

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