Anti-blocking device and waste gas treatment system comprising same

Abstract

The utility model relates to the technical field of battery production, particularly provides an anti-blocking device and a waste gas treatment system comprising the anti-blocking device, and aims to solve the problem that a waste discharge pipeline is blocked by metaphosphoric acid in the existing photovoltaic battery production. In order to achieve the purpose, the anti-blocking device is arranged on the waste discharge pipeline and comprises an outer shell and a heating component, and the heating component is arranged in the outer shell and used for heating the waste discharge pipeline. In the production of photovoltaic cells, metaphosphoric acid waste gas generated after the reaction of a diffusion furnace and phosphorus oxychloride enters the liquid accumulation bottle through the waste discharge pipeline to be condensed and filtered, and in the waste gas flowing process, the waste discharge pipeline is heated through the heating component, so that the temperature of the metaphosphoric acid waste gas is increased, and the metaphosphoric acid waste gas is prevented from being solidified into a solid state to cause pipeline blockage; therefore, the difficulty and the frequency of equipment maintenance are reduced, possible damage to equipment is reduced, and the influence on the production efficiency is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, and specifically provides an anti-blocking device and an exhaust gas treatment system comprising the anti-blocking device. Background Art

[0002] Photovoltaic cells, as an important component of green energy, have been widely used in modern society. Among them, PERC cells (passivated emitter and rear surface area cells) have attracted much attention due to their high efficiency. However, during their production process, they need to react with phosphorus oxychloride in a diffusion furnace, which produces waste gas. The main component of the waste gas is metaphosphoric acid, which has a melting point of 73.6 degrees Celsius and a boiling point of up to 200 degrees Celsius. In existing production processes, to prevent the impact of metaphosphoric acid waste gas on the environment, the common practice is to connect the tail of the diffusion furnace tube to a liquid storage bottle so that the liquid metaphosphoric acid can be stored in the liquid storage bottle through condensation and filtration, and cleaned regularly. However, in actual operation, due to the relatively low melting point of metaphosphoric acid, the metaphosphoric acid easily solidifies into a solid state at the connection between the diffusion furnace and the liquid storage bottle as the exhaust gas temperature gradually decreases, causing blockage in the waste discharge pipe. This not only affects the smooth progress of the production process and increases the difficulty and frequency of equipment maintenance, but also may cause damage to the equipment, thereby affecting production efficiency and cost.

[0003] Accordingly, there is a need in the art for an anti-blocking device to solve the problem of metaphosphoric acid blocking waste pipes in existing photovoltaic cell production. Utility Model Content

[0004] The utility model aims to solve the above technical problem, that is, to solve the problem of metaphosphoric acid clogging waste discharge pipes in the existing photovoltaic cell production.

[0005] In a first aspect, the utility model provides an anti-blocking device, which is configured to be set on a waste pipe, and the anti-blocking device includes an outer shell and a heating component, the heating component is set in the outer shell, and the heating component is used to heat the waste pipe.

[0006] When using this technical solution, during photovoltaic cell production, the metaphosphoric acid waste gas generated by the reaction between the diffusion furnace and phosphorus oxychloride flows through a waste pipe into a liquid collection bottle for condensation and filtration. During the waste gas's flow, a heating element heats the waste pipe, raising the temperature of the metaphosphoric acid waste gas. This prevents it from solidifying and potentially clogging the pipe, reducing the difficulty and frequency of equipment maintenance, as well as potential damage to the equipment and preventing production efficiency from being affected.

[0007] In an optional technical solution of the above-mentioned anti-blocking device, the anti-blocking device further includes a heat-conducting component, which is arranged in the outer shell, and heat is conducted between the heating component and the exhaust pipe through the heat-conducting component.

[0008] When the above technical solution is adopted, after the heat-generating component heats the heat-conducting component, the heat-conducting component conducts the heat to the exhaust pipe, which can improve the uniformity of heating the pipe.

[0009] In an optional technical solution of the above-mentioned anti-blocking device, the heating component is a heating pipe, the heat-conducting component is a heat-conducting pipe, and the heating pipe is located between the outer shell and the heat-conducting pipe.

[0010] When the above technical solution is adopted, the anti-blocking device is sleeved on the waste discharge pipe, and the tubular heat-conducting component comprehensively heats the waste discharge pipe, thereby improving heating efficiency and heating uniformity.

[0011] In an optional technical solution of the above-mentioned anti-blocking device, the outer shell includes a first outer shell and a second outer shell, and the first outer shell and the second outer shell are detachably connected to form the outer shell;

[0012] The heating pipe comprises a first heating portion and a second heating portion, wherein the first heating portion and the second heating portion together form the heating pipe;

[0013] The heat conducting pipe includes a first heat conducting portion and a second heat conducting portion, and the first heat conducting portion and the second heat conducting portion together form the heat conducting pipe.

[0014] When adopting the above technical solution, the anti-blocking device is split into two parts. When installing the anti-blocking device, the two split parts can be installed from both sides of the waste discharge pipe respectively, and then the first outer shell and the second outer shell are connected, so that the anti-blocking device wraps the waste discharge pipe, without the need to disassemble the waste discharge pipe and then insert the anti-blocking device from its end, which is convenient for installation.

[0015] In an optional technical solution of the above-mentioned anti-blocking device, the first heating part and the first heat conducting part are respectively connected to the first outer shell, and the second heating part and the second heat conducting part are respectively connected to the second outer shell;

[0016] Alternatively, the first heat-generating part is connected to the first heat-conducting part, one of which is connected to the first outer shell, the second heat-generating part is connected to the second heat-conducting part, and one of which is connected to the second outer shell.

[0017] When the above technical solution is adopted, the anti-blocking device is split into two parts connected as a whole and then installed, which can further improve the installation efficiency.

[0018] In an optional technical solution of the above-mentioned anti-blocking device, a heat-conducting block for conducting heat is provided between the first heating part and the second heating part;

[0019] And / or, the first outer shell and the second outer shell are respectively provided with outwardly extending fixing plates, and the two fixing plates are detachably connected via fasteners.

[0020] In the case of adopting the above technical solution, the heat conducting block is used to transfer heat between the first heating part and the second heating part, so that the heat on the heating pipe is more evenly distributed. The first outer shell and the second outer shell are connected by an outwardly extending fixing plate, which is more convenient for installation and removal.

[0021] In an optional technical solution of the above-mentioned anti-blocking device, a twisting handle is provided on the fastener.

[0022] When the above technical solution is adopted, the fastener is removed or installed by twisting the handle, which is convenient for technicians to operate.

[0023] In an optional technical solution of the above-mentioned anti-blocking device, a fixing rod is provided on the heating tube, and a corresponding plug-in slot is provided on the outer shell. When the heating tube is arranged in the outer shell, the end of the fixing rod is inserted into the plug-in slot; and / or, a mounting handle is provided on the outer shell.

[0024] When the above technical solution is adopted, the heating pipe and the outer shell are connected by inserting the fixing rod into the plug-in slot, which makes installation and disassembly more convenient and improves the efficiency of installation and disassembly. The outer shell is provided with an installation handle, which can be held during installation to make installation more convenient and labor-saving.

[0025] In an optional technical solution of the above-mentioned anti-blocking device, the anti-blocking device further includes a display screen and a temperature sensor, the temperature sensor is electrically connected to the display screen, and the temperature sensor is configured to detect the temperature of the waste discharge pipe.

[0026] When the above technical solution is adopted, the staff can easily see the temperature of the waste discharge pipe and adjust the heating temperature according to the temperature.

[0027] The present utility model also provides a waste gas treatment system, which includes the anti-blocking device, diffusion furnace and liquid accumulation bottle described in any one of the above technical solutions, and the diffusion furnace and the liquid accumulation bottle are connected through the waste discharge pipe.

[0028] Those skilled in the art can understand that the anti-blocking device of the present invention includes an outer shell and a heating component. The heating component is arranged in the outer shell, and the anti-blocking device is arranged on the waste pipe. The heating component is used to heat the waste pipe.

[0029] When using the above technical solution, during photovoltaic cell production, the metaphosphoric acid waste gas generated by the reaction between the diffusion furnace and phosphorus oxychloride flows through a waste pipe into a liquid collection bottle for condensation and filtration. As the waste gas flows from the diffusion furnace to the liquid collection bottle, a heating element heats the waste pipe, raising the temperature of the metaphosphoric acid waste gas. This prevents the waste gas from solidifying and potentially clogging the pipe, reducing the difficulty and frequency of equipment maintenance, as well as potential damage to the equipment and preventing production efficiency from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0031] Figure 1 This is a three-dimensional structural diagram of the anti-blocking device of the utility model;

[0032] Figure 2 This is a partial front cross-sectional view of the anti-blocking device of the utility model;

[0033] Figure 3 This is a partial cross-sectional view of the interior of the anti-blocking device of the utility model;

[0034] Figure 4 This is a schematic structural diagram of the heating tube of the present utility model;

[0035] Figure 5 It is a schematic diagram of the heat pipe of the present utility model.

[0036] List of reference numerals:

[0037] 1. Outer shell; 11. First outer shell; 12. Second outer shell; 13. Fixing plate; 14. First mounting plate; 15. Second mounting plate; 16. Fastener; 17. Twist handle;

[0038] 2. Heating tube; 21. First heating part; 22. Second heating part; 23. Heat conducting block; 24. End ring; 25. Heating branch pipe; 26. Heater;

[0039] 3. Heat pipe; 31. First heat conducting portion; 32. Second heat conducting portion;

[0040] 41. Temperature sensor; 42. Display screen; 43. Controller; 44. Fixing rod;

[0041] 5. Install the handle;

[0042] 1', waste discharge pipe. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific applications. For example, although the present application is described in conjunction with an exhaust gas treatment system in photovoltaic cell production, this is not restrictive, and the anti-blocking device of the present invention can be applied to exhaust gas treatment systems in other fields, and can also be applied to other equipment outside the exhaust gas treatment system.

[0044] It should be noted that in the description of this utility model, terms such as "inner" and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is for ease of description only and does not indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting the utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance.

[0045] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installation" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; they can refer to mechanical connection; they can refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0046] Reference Figure 1 、 Figure 2 and Figure 4 In order to solve the problem of metaphosphoric acid clogging the waste pipe in the existing photovoltaic cell production, the anti-clogging device of the utility model is configured to be set on the waste pipe 1', and the anti-clogging device includes an outer shell 1 and a heating component. The heating component is set in the outer shell 1 and is used to heat the waste pipe 1'.

[0047] In the production of photovoltaic cells, the metaphosphoric acid waste gas generated by the reaction between the diffusion furnace and phosphorus oxychloride enters the liquid accumulation bottle through the waste discharge pipe 1' for condensation and filtration. In the process of the waste gas flowing from the diffusion furnace to the liquid accumulation bottle, the waste discharge pipe 1' is heated by the heating component, thereby increasing the temperature of the metaphosphoric acid waste gas, preventing it from solidifying into a solid state during the flow process and causing pipeline blockage, reducing the difficulty and frequency of equipment maintenance, as well as possible damage to the equipment, and preventing it from affecting production efficiency.

[0048] Reference Figure 1 and Figure 2In one possible embodiment, the anti-blocking device includes an outer shell 1, a heating component and a heat-conducting component. The heating component is connected to a heater 26 for controlling the heating temperature. Optionally, the outer shell 1 is tubular, the heating component is a heating pipe 2, and the heat-conducting component is a heat-conducting pipe 3. Figure 4 Furthermore, the heating tube 2 includes an end ring 24 and a heating branch tube 25, and both ends of the multiple heating branch tubes 25 are respectively connected to the end ring 24. Fixed rods 44 are provided at the ends of both sides of the heating tube 2, and a plug-in slot (not shown in the figure) that cooperates with the fixed rod 44 is provided in the outer shell 1. When the heating tube 2 is installed in the outer shell 1, the end of the fixed rod 44 is inserted into the plug-in slot. However, it should be noted that the heating tube 2 is not limited to a structure in which multiple branches are connected, but can also be an integral tubular structure. Those skilled in the art can set it by themselves according to their needs, and all of them fall within the protection scope of the present utility model.

[0049] Reference Figures 2 to 4 Furthermore, the heating pipe 2 is sleeved on the outside of the heat pipe 3, and the two are arranged in the outer shell 1, so that the heat pipe 3 is located between the outer shell 1 and the heating pipe 2. When installing the anti-blocking device, the heat pipe 3 is sleeved on the exhaust pipe 1', and the heat generated by the heating pipe 2 is transferred to the exhaust pipe 1' through the heat pipe 3, thereby improving the uniformity of pipe heating. Fixed rods 44 are provided on the ends of both sides of the heat pipe 3, and a plug-in groove that cooperates with the fixed rod 44 is provided on the inner wall of the outer shell 1. When the heat pipe 3 is installed in the outer shell 1, the end of the fixed rod 44 is inserted into the plug-in groove to fix the heat pipe 3. A first mounting plate 14 is provided on the outside of the outer shell 1, and the heater 26 is provided on the first mounting plate 14. Furthermore, a mounting handle 5 is provided on the outer shell 1 to facilitate technicians to install the anti-blocking device.

[0050] Reference Figure 1 Furthermore, the anti-blocking device also includes a display screen 42, a temperature sensor 41, and a controller 43. The display screen 42 and controller 43 are disposed on the outside of the outer shell 1. A second mounting plate 15 is also disposed on the outside of the outer shell 1. The temperature sensor 41 is disposed on the second mounting plate 15 and is used to detect the temperature of the waste discharge pipe 1'. The temperature sensor 41 and the display screen 42 are electrically connected so that the display screen 42 displays the temperature of the waste discharge pipe 1' in real time. The controller 43 is electrically connected to the temperature sensor 41 and the heater 26, respectively, so that the heating power of the heater 26 is adjusted based on the detected temperature of the waste discharge pipe 1'.

[0051] Reference Figure 1 and Figure 2In one possible embodiment, the outer shell 1 includes a semicircular first outer shell 11 and a second outer shell 12, which are connected to form the outer shell 1. The first outer shell 11 and the second outer shell 12 are respectively provided with an outwardly extending fixing plate 13, and the two fixing plates 13 are detachably connected by a fastener 16.

[0052] Reference Figure 1 The fastener 16 is a bolt. The fixing plate 13 is provided with a mounting hole. The bolt is inserted into the mounting hole and then tightened with a nut. A handle 17 is provided on the bolt, so that technicians can more conveniently tighten the bolt by turning the handle 17 during assembly and disassembly. The present invention does not impose any restrictions on the type of fastener 16. The fastener 16 can also be a screw, etc. Those skilled in the art can freely determine the type of fastener 16 according to actual needs, and all such changes fall within the scope of protection of the present invention.

[0053] Reference Figure 2 and Figure 4 The heat pipe 2 includes a semicircular first heat-generating portion 21 and a second heat-generating portion 22. The first heat-generating portion 21 and the second heat-generating portion 22 abut against each other to form the entire tubular heat pipe 2. Figure 2 and Figure 5 The heat pipe 3 includes a semicircular first heat conducting portion 31 and a second heat conducting portion 32. The first heat conducting portion 31 and the second heat conducting portion 32 abut against each other to form the entire tubular heat pipe 3. A heat conducting block 23 is provided between the first heating portion 21 and the second heating portion 22 for heat conduction therebetween. The first heating portion 21 and the first heat conducting portion 31 are each detachably connected to the first outer shell 11. The second heating portion 22 and the second heat conducting portion 32 are each detachably connected to the second outer shell 12.

[0054] Reference Figure 4 Furthermore, fixing rods 44 are provided on both ends of the first heating portion 21, and corresponding insertion slots are provided on the first outer shell 11. The first heating portion 21 and the first outer shell 11 are connected by inserting the ends of the fixing rods 44 into the insertion slots. Similarly, fixing rods 44 are provided on both ends of the second heating portion 22, and corresponding insertion slots are provided on the second outer shell 12. The second heating portion 22 and the second outer shell 12 are connected by inserting the ends of the fixing rods 44 into the insertion slots.

[0055] Similarly, fixing rods 44 are provided at the ends of both sides of the first heat conducting part 31, and corresponding plug-in slots are provided on the first outer shell 11. The first heat conducting part 31 and the first outer shell 11 are connected by inserting the ends of the fixing rods 44 into the plug-in slots. Fixing rods 44 are provided at the ends of both sides of the second heat conducting part 32, and corresponding plug-in slots are provided on the second outer shell 12. The second heat conducting part 32 and the second outer shell 12 are connected by inserting the ends of the fixing rods 44 into the plug-in slots.

[0056] However, it should be noted that although the detachable connection between the two heating parts and the outer shell 1 and the detachable connection between the two heat-conducting parts and the outer shell 1 are described as the fixing rod 44 is inserted into the plug-in slot, it is not intended to limit the connection method. For example, a snap can be provided on the first heating part 21 and the first heat-conducting part 31, and a corresponding slot can be provided on the first outer shell 11. A snap can be provided on the second heating part 22 and the second heat-conducting part 32, and a corresponding slot can be provided on the second outer shell 12, and the connection is achieved by snapping the snap in the slot. Alternatively, the first heating part 21, the first heat-conducting part 31 and the first outer shell 11 are detachably connected by bolts or screws. The second heating part 22, the second heat-conducting part 32 and the second outer shell 12 are detachably connected by bolts or screws, etc. In addition to being detachably connected, the first heating part 21, the first heat-conducting part 31 and the first outer shell 11, and the second heating part 22, the second heat-conducting part 32 and the second outer shell 12 can also be fixedly connected, such as by welding, etc. Those skilled in the art can set the connection mode according to actual needs, and all of them fall within the protection scope of the present invention.

[0057] The utility model splits the tubular anti-blocking device into two parts. When installing the anti-blocking device, the two split parts can be installed from both sides of the waste discharge pipe 1', and then the first outer shell 11 and the second outer shell 12 are connected, so that the anti-blocking device wraps the waste discharge pipe 1', without the need to disassemble the waste discharge pipe 1' and then insert the anti-blocking device from its end.

[0058] In addition, although the outer shell 1, heating component and heat-conducting component in the present invention are described as circular tubes, the shapes of the outer shell 1, heating component and heat-conducting component in the present invention are not limited to circular tubes, and their shapes can also be rectangular tubes, elliptical tubes, etc.

[0059] As stated in the first paragraph of this section, the above-mentioned implementation mode is only used to illustrate the principle of the present invention and is not intended to limit the scope of protection of the present invention. Without departing from the principle of the present invention, those skilled in the art can adjust the above-mentioned structure so that the present invention can be applied to more specific application scenarios.

[0060] Of course, the shapes of the heating component and the heat-conducting component are not limited to tubular shapes. For example, in an alternative embodiment, the heating component can also be a heating wire, which is wound around the outer wall of the heat-conducting tube 3, thereby heating the heat-conducting tube 3. In another alternative embodiment, the heating component is an arc-shaped heating plate, and the heat-conducting component is an arc-shaped heat-conducting plate, which heats the exhaust pipe 1' by partial contact. The present invention does not impose any restrictions on the structure of the heating component and the heat-conducting component, and all fall within the scope of protection of the present invention. These do not deviate from the principles of the present invention, and therefore all fall within the scope of protection of the present invention.

[0061] For example, in an alternative embodiment, the heat pipe 3 is connected to the heating pipe 2, and one of the heating pipes 2 or 3 is further connected to the outer shell 1. Therefore, the present invention does not specify the method for fixing the heat pipe 3 and the heating pipe 2 in the outer shell 1. As long as the heating pipe 2 and the heat pipe 3 can be fixed in the outer shell 1, these methods do not deviate from the principles of the present invention and thus fall within the scope of protection of the present invention.

[0062] In addition, the utility model also provides a waste gas treatment system, which has the anti-blocking device, diffusion furnace and liquid accumulation bottle described in any of the above embodiments. The diffusion furnace and the liquid accumulation bottle are connected through a waste discharge pipe 1', and the anti-blocking device is arranged on the waste discharge pipe 1' to heat the waste discharge pipe 1'.

[0063] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. An anti-blocking device, characterized in that: The anti-blocking device is configured to be disposed on a waste discharge pipe, and includes an outer shell and a heating component disposed in the outer shell, and the heating component is used to heat the waste discharge pipe.

2. The anti-blocking device according to claim 1, characterized in that: The anti-blocking device further includes a heat-conducting component, which is disposed in the outer shell. Heat is conducted between the heat-generating component and the exhaust pipe through the heat-conducting component.

3. The anti-blocking device according to claim 2, characterized in that: The heat-generating component is a heat-generating pipe, the heat-conducting component is a heat-conducting pipe, and the heat-generating pipe is located between the outer shell and the heat-conducting pipe.

4. The anti-blocking device according to claim 3, characterized in that: The outer shell includes a first outer shell and a second outer shell, and the first outer shell and the second outer shell are detachably connected to form the outer shell; The heating pipe includes a first heating portion and a second heating portion, wherein the first heating portion and the second heating portion together form the heating pipe; The heat conducting pipe includes a first heat conducting portion and a second heat conducting portion, and the first heat conducting portion and the second heat conducting portion together form the heat conducting pipe.

5. The anti-blocking device according to claim 4, characterized in that: The first heat generating portion and the first heat conducting portion are connected to the first outer shell respectively, and the second heat generating portion and the second heat conducting portion are connected to the second outer shell respectively; Alternatively, the first heat-generating part is connected to the first heat-conducting part, one of which is connected to the first outer shell, the second heat-generating part is connected to the second heat-conducting part, and one of which is connected to the second outer shell.

6. The anti-blocking device according to claim 4, characterized in that: A heat conducting block for conducting heat is provided between the first heat generating portion and the second heat generating portion; And / or, the first outer shell and the second outer shell are respectively provided with outwardly extending fixing plates, and the two fixing plates are detachably connected via fasteners.

7. The anti-blocking device according to claim 6, characterized in that: The fastener is provided with a screwing handle.

8. The anti-blocking device according to claim 3, characterized in that: The heating tube is provided with a fixing rod, and the outer shell is provided with a corresponding plug-in slot. When the heating tube is arranged in the outer shell, the end of the fixing rod is inserted into the plug-in slot; and / or, the outer shell is provided with a mounting handle.

9. The anti-blocking device according to any one of claims 1 to 8, characterized in that: The anti-blocking device further includes a display screen and a temperature sensor. The temperature sensor is electrically connected to the display screen, and the temperature sensor is configured to detect the temperature of the waste discharge pipe.

10. An exhaust gas treatment system, characterized in that: The waste gas treatment system comprises the anti-blocking device according to any one of claims 1 to 9, a diffusion furnace and a liquid accumulation bottle, wherein the diffusion furnace and the liquid accumulation bottle are connected via a waste discharge pipe.

Images