Air exhausting and cleaning device of texturing equipment

Abstract

The utility model relates to an exhaust and cleaning device of texturing equipment, and belongs to the technical field of solar cell manufacturing. Comprising a water pump, an air draft pump, a connecting disc, a main pipe, an exhaust pipe, a spraying pipe, a waste liquid pipe, a first control valve, a second control valve, a third control valve and a pressure detection meter. A worker opens an air draft pump and a first control valve to exhaust air in the main pipe; a pressure value in a main pipe is detected through a pressure detection meter, crystal substances are attached to the inner wall of the main pipe, the pressure detection meter detects that the pressure value in the main pipe exceeds a preset pressure value, a worker starts a water pump, a second control valve and a third control valve, water flow sprays the inner wall of the main pipe through a spraying pipe, and the crystal substances flow into a waste liquid pipe along with spraying water flow; the air exhausting and cleaning device provided by the utility model is simple in structure, integrates air exhausting and cleaning, is convenient to operate, can clean the main pipe when crystal substances in the main pipe are not seriously blocked, can shorten the maintenance period of the main pipe, and reduces the influence on the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell manufacturing, in particular to an exhaust and cleaning device for a texturing device. Background Art

[0002] With the rapid progress and development of photovoltaic technology, the conversion efficiency of crystalline silicon solar cells has increased year by year, and the development of high-efficiency batteries has received more and more attention, especially silicon-based heterojunction (HJT) solar cells. Silicon-based heterojunction solar cells have become one of the important research directions because of their short manufacturing process, low preparation process temperature, high conversion efficiency, high open circuit voltage, low temperature coefficient, no light-induced degradation (LID), no electrical degradation (PID), suitable for using thin silicon wafers to make flexible battery components, and high power generation.

[0003] In the preparation of silicon-based heterojunction solar cells, texturing and cleaning are one of the most critical steps. The wafer is cleaned in the texturing equipment by a water pump and an external water source, and the pyramid velvet structure formed on the surface of the wafer can reduce the reflectivity, increase the short-circuit current (Isc), increase the PN junction area, and ultimately improve the conversion efficiency of the wafer. After the wafer enters the tank body and reacts with the liquid medicine for cleaning, the smell of the liquid medicine reacting with the wafer flows out during the process of the tank body opening door robot arm taking out the flower basket. Because the liquid medicine is volatile, the gas volatilized by the liquid medicine is extracted through the external exhaust pipe; however, when the gas volatilized by the liquid medicine passes through the exhaust pipe, it will form crystals on the inner wall of the exhaust pipe. The crystals adhere to the inner wall of the exhaust pipe for a long time, which can easily block the exhaust port of the exhaust pipe; due to the blockage of the exhaust pipe, the gas volatilized by the liquid medicine cannot be extracted. If it is not handled in time, it will cause the gas concentration in the exhaust pipe to increase, and the smell of the gas will easily spread to the outside of the texturing equipment, which is easy to cause unsafe accidents, and the maintenance cycle of the exhaust pipe is long, affecting production efficiency. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an exhaust and cleaning device for a cashmere making device.

[0005] The technical solution of the utility model is as follows:

[0006] An exhaust and cleaning device for a texturing device comprises a water pump, an exhaust pump, a connecting plate, a main pipe, an exhaust pipe, a spray pipe, a waste liquid pipe, a first control valve, a second control valve, a third control valve and a pressure detection gauge. One side of the connecting plate is connected to the exhaust port of the texturing device, and the air inlet of the exhaust pipe is connected to the other side of the connecting plate. The main pipe is divided into an upper pipe and a lower pipe. The air inlet of the exhaust pump is connected to one end of the upper pipe, and the exhaust port of the exhaust pipe is connected and communicated with the pipe wall of the lower pipe through the first control valve. The spray pipe is connected between the other end of the upper pipe and one end of the lower pipe, the other end of the lower pipe is connected to and communicated with the liquid inlet of the waste liquid pipe through the second control valve, the water outlet of the water pump is connected to and communicated with the spray pipe through the third control valve, the pressure detection gauge is connected to the lower pipe, and the detection port of the pressure detection gauge is communicated with the interior of the lower pipe; the exhaust port of the exhaust pump is connected to an external filtering device, the liquid outlet of the waste liquid pipe is connected to an external waste liquid tank, and the water inlet of the water pump is connected to an external water source.

[0007] Optionally, the spray pipe includes a first pipe, a second pipe and two bottom plates, the first pipe is sleeved on the outer circumference of the second pipe, a plurality of spray holes are circumferentially opened on the pipe wall of the second pipe, the two bottom plates are both annular in shape, the top end of the first pipe and the top end of the second pipe are respectively connected to the outer wall and the inner wall of the first bottom plate, the bottom end of the first pipe and the bottom end of the second pipe are respectively connected to the outer wall and the inner wall of the second bottom plate, and the water outlet of the water pump is connected to the first pipe.

[0008] Optionally, an exhaust and cleaning device of a velveting equipment also includes two connecting parts and two sealing rings, the first connecting part is connected between the top end of the first pipe and the other end of the upper pipe, the second connecting part is connected between the bottom end of the first pipe and one end of the lower pipe, and the two sealing rings are respectively connected between the inner walls of the two connecting parts and the outer wall of the first pipe.

[0009] Optionally, an exhaust and cleaning device of a wool making equipment also includes an inlet pipe and an outlet pipe, one end of the inlet pipe is connected to the water outlet of the water pump, the other end of the inlet pipe is connected to and communicates with the pipe wall of the first pipe, and the third control valve is connected to the inlet pipe; one end of the outlet pipe is connected to the other end of the lower pipe, the other end of the outlet pipe is connected to the liquid inlet of the waste liquid pipe, and the second control valve is connected to the lower pipe and is located above the connection between the lower pipe and one end of the outlet pipe and below the connection between the lower pipe and the exhaust outlet of the exhaust pipe.

[0010] Optionally, an exhaust and cleaning device for a texturing device further comprises a branch pipe, one end of which is connected to the pipe wall of the lower pipe section, and the other end of which is connected to the detection port of the pressure detection gauge.

[0011] All the optional technical solutions mentioned above can be combined arbitrarily, and the present utility model does not provide detailed descriptions of the structures after the combinations one by one.

[0012] By means of the above scheme, the beneficial effects of the utility model are as follows:

[0013] By setting a water pump, an exhaust pump, a connecting plate, a main pipe, an exhaust pipe, a spray pipe, a waste liquid pipe, a first control valve, a second control valve, a third control valve and a pressure detection gauge, when the texturing equipment is cleaning the wafer, the staff turns on the exhaust pump and the first control valve, and keeps the water pump, the second control valve and the third control valve closed. The volatile gas generated by the liquid medicine during the cleaning process enters the external filtering equipment through the exhaust pipe, the first control valve, the main pipe and the exhaust pump, thereby completing the exhaust process of the volatile gas; by pre-setting a pressure value for the pressure detection gauge connected to the main pipe, when the main pipe is continuously exhausted for a period of time, crystals adhere to the inner wall of the main pipe, causing the main pipe to be vented. When the pressure rises, the pressure detection gauge detects that the pressure value in the main pipe exceeds the preset pressure value and starts to alarm. The staff turns off the exhaust pump and the first control valve, and turns on the water pump, the second control valve and the third control valve. The water flows into the spray pipe through the third control valve, and sprays the inner wall of the main pipe through the spray pipe to separate the crystals from the inner wall of the main pipe. The crystals flow into the waste liquid pipe through the second control valve along with the spray water flow, thereby completing the cleaning process of the main pipe. In addition, the cleaning process of the main pipe can also be carried out regularly, and the main pipe can be cleaned during the time interval when the texturing equipment is not working, which can prevent the production rhythm of the texturing equipment from being interrupted and reduce the impact on the texturing equipment.

[0014] In summary, the exhaust and cleaning device of the cashmere making equipment provided by the utility model has a simple structure, integrates exhaust and cleaning in one, and is easy to operate; by pre-setting the pressure value of the pressure detection gauge, it is judged whether the main pipe needs to be cleaned based on the preset pressure value, or the main pipe is cleaned regularly, and the main pipe can be cleaned when there is no serious blockage caused by crystals in the main pipe, which can shorten the maintenance cycle of the main pipe and reduce the impact on production efficiency.

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Description of Figure Numbers:

[0018] 1. Connecting plate; 2. Main pipe; 21. Upper pipe; 22. Lower pipe; 3. Exhaust pipe; 4. Spray pipe; 41. Spray hole; 5. Waste liquid pipe; 6. First control valve; 7. Second control valve; 8. Third control valve; 9. Pressure test gauge; 10. Liquid inlet pipe; 11. Liquid outlet pipe; 12. Branch pipe. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] like Figure 1 As shown, the utility model provides an exhaust and cleaning device for a texturing device, including a water pump, an exhaust pump, a connecting plate 1, a main pipe 2, an exhaust pipe 3, a spray pipe 4, a waste liquid pipe 5, a first control valve 6, a second control valve 7, a third control valve 8 and a pressure detection gauge 9, one side of the connecting plate 1 is connected to the exhaust port of the texturing device, the air inlet of the exhaust pipe 3 is connected to the other side of the connecting plate 1, the main pipe 2 is divided into an upper pipe 21 and a lower pipe 22, the air inlet of the exhaust pump is connected to one end of the upper pipe 21, the exhaust port of the exhaust pipe 3 and the pipe wall of the lower pipe 22 are connected through the first control valve. The second control valve 7 is connected and communicated with the second control valve 8, the water outlet of the water pump is connected and communicated with the spray pipe 4 through the third control valve 8, the pressure detection gauge 9 is connected with the lower section pipe 22, and the detection port of the pressure detection gauge 9 is communicated with the interior of the lower section pipe 22; the exhaust port of the exhaust pump is connected with an external filtering device, the outlet of the waste liquid pipe 5 is connected with an external waste liquid tank, and the water inlet of the water pump is connected with an external water source.

[0021] Specifically, the diameter of the connecting plate 1 in the utility model is 300mm; the main pipe 2 is a PP pipe with a diameter of 200mm; the waste liquid pipe 5 is a PP pipe with a diameter of 150mm; the first control valve 6 is a PP hand valve, the second control valve 7 is a PVDF hand valve, and the third control valve 8 is a water inlet hand valve.

[0022] Furthermore, since the first control valve 6 and the second control valve 7 are easily exposed to volatile gases, crystals and spray water of the liquid medicine, valves with better corrosion resistance should be selected when selecting the first control valve 6 and the second control valve 7.

[0023] In a specific implementation manner, when the texturing equipment is cleaning the wafer, the staff turns on the exhaust pump and the first control valve 6, and keeps the water pump, the second control valve 7 and the third control valve 8 closed. The volatile gas generated by the liquid medicine during the cleaning process enters the external filtering device through the exhaust pipe 3, the first control valve 6, the main pipe 2 and the exhaust pump, thereby completing the exhaust process of the volatile gas; by pre-setting a pressure value for the pressure detection gauge 9, when the main pipe 2 is continuously exhausted for a period of time, crystals are attached to the inner wall of the main pipe 2, causing the pressure in the main pipe 2 to increase, the pressure detection gauge 9 detects that the pressure value in the main pipe 2 exceeds the preset pressure After the force value is reached, the alarm starts to sound. The staff turns off the exhaust pump and the first control valve 6, and turns on the water pump, the second control valve 7 and the third control valve 8. The water flows into the spray pipe 4 through the third control valve 8, and is sprayed on the inner wall of the main pipe 2 through the spray pipe 4, so that the crystals are separated from the inner wall of the main pipe 2. The crystals flow into the waste liquid pipe 5 through the second control valve 7 along with the spraying water flow, thereby completing the cleaning process of the main pipe 2. In addition, the cleaning process of the main pipe 2 can also be carried out regularly, and the main pipe 2 can be cleaned during the time interval when the texturing equipment is not working, which can prevent the production rhythm of the texturing equipment from being interrupted and reduce the impact on the texturing equipment.

[0024] In order to reduce the probability of failure of the texturing equipment to a greater extent, reduce the maintenance time of the main pipe 2, and reduce the impact on production efficiency, it is preferred to clean the main pipe 2 regularly to ensure the cleanliness of the inner wall of the main pipe 2. More preferably, the main pipe 2 can be cleaned once every half a month.

[0025] Furthermore, the pressure detection gauge 9 in the utility model is electrically connected to the controller, and the controller is electrically connected to the external alarm device. The controller pre-sets a pressure value, and the pressure detection gauge 9 detects the pressure value in the main pipe 2 in real time and sends it to the controller. When the controller determines that the pressure value sent by the pressure detection gauge 9 is higher than the preset pressure value, it is confirmed that there are more crystals in the main pipe 2, and the controller then controls the external alarm device to start and alarm.

[0026] Optionally, the spray pipe 4 includes a first pipe, a second pipe and two bottom plates, the first pipe is sleeved on the outer circumference of the second pipe, a plurality of spray holes 41 are circumferentially opened on the pipe wall of the second pipe, the two bottom plates are both annular in shape, the top end of the first pipe and the top end of the second pipe are respectively connected to the outer wall and the inner wall of the first bottom plate, the bottom end of the first pipe and the bottom end of the second pipe are respectively connected to the outer wall and the inner wall of the second bottom plate, and the water outlet of the water pump is connected to the first pipe.

[0027] Specifically, the diameter of the spray hole 41 in the present invention is 2 mm.

[0028] In a specific implementation manner, the water flowing out of the water pump passes through the first pipe and enters between the first pipe and the second pipe, and then is sprayed onto the inner wall of the main pipe 2 through multiple spray holes 41. The water flow is sprayed onto the inner wall of the main pipe 2, so that the crystals are separated from the inner wall of the main pipe 2. Finally, the separated crystals and the sprayed water flow flow into the waste liquid pipe 5, thereby completing the cleaning process of the main pipe 2.

[0029] Optionally, an exhaust and cleaning device of a velveting equipment also includes two connecting parts and two sealing rings, the first connecting part is connected between the top end of the first pipe and the other end of the upper pipe 21, the second connecting part is connected between the bottom end of the first pipe and one end of the lower pipe 22, and the two sealing rings are respectively connected between the inner walls of the two connecting parts and the outer wall of the first pipe.

[0030] In a specific implementation, if the diameter of the upper pipe 21 and the diameter of the lower pipe 22 are both smaller than the diameter of the first pipe, a pipe fitting used to connect a reducer can be selected as a connecting piece; if the diameter of the upper pipe 21, the diameter of the lower pipe 22 and the diameter of the first pipe are the same, a pipe fitting such as a snap or a connecting elbow can be selected as a connecting piece.

[0031] The two sealing rings can be used to prevent water leakage and air leakage at the connection between the upper pipe 21 and the top end of the first pipeline and to prevent water leakage and air leakage at the connection between the lower pipe 22 and the bottom end of the first pipeline.

[0032] Optionally, an exhaust and cleaning device of a wool making equipment also includes an inlet pipe 10 and an outlet pipe 11, one end of the inlet pipe 10 is connected to the water outlet of the water pump, the other end of the inlet pipe 10 is connected to and communicates with the pipe wall of the first pipe, the third control valve 8 is connected to the inlet pipe 10; one end of the outlet pipe 11 is connected to the other end of the lower pipe 22, the other end of the outlet pipe 11 is connected to the liquid inlet of the waste liquid pipe 5, the second control valve 7 is connected to the lower pipe 22 and is located above the connection between the lower pipe 22 and one end of the outlet pipe 11 and below the connection between the lower pipe 22 and the exhaust outlet of the exhaust pipe 3.

[0033] Specifically, the liquid inlet pipe 10 in the present invention is a PPR pipe with a diameter of 30 mm; the liquid outlet pipe 11 is a PP pipe with a diameter of 100 mm.

[0034] By setting the liquid inlet pipe 10, the water flow pressure at the water outlet of the water pump can be relieved, thereby preventing the spray pipe 4 from being damaged when the high-pressure water flows into the spray pipe 4; by setting the liquid outlet pipe 11, the waste water in the waste liquid pipe 5 can be prevented from flowing back into the lower pipe 22 and polluting the lower pipe 22.

[0035] Optionally, an exhaust and cleaning device for a texturing device further includes a branch pipe 12 , one end of the branch pipe 12 is connected to the pipe wall of the lower pipe 22 , and the other end of the branch pipe 12 is connected to the detection port of the pressure detection gauge 9 .

[0036] If the pressure gauge 9 is directly fixed on the wall of the lower tube 22, crystals may easily clog the detection port of the pressure gauge 9, making it difficult to clean. However, by connecting the pressure gauge 9 to the lower tube 22 through the branch tube 12, the crystals may be prevented from clogging the detection port.

[0037] In summary, the exhaust and cleaning device of the silk-making equipment provided by the utility model has a simple structure, integrates exhaust and cleaning in one, and is easy to operate; by pre-setting the pressure value of the pressure detection gauge 9, it is judged whether the main pipe 2 needs to be cleaned based on the preset pressure value, or the main pipe 2 is cleaned regularly, and the main pipe 2 can be cleaned when there is no serious blockage of crystals in the main pipe 2, which can shorten the maintenance cycle of the main pipe 2 and reduce the impact on production efficiency.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. An exhaust and cleaning device for a texturing device, characterized in that: include: A water pump, an exhaust pump, a connecting plate (1), a main pipe (2), an exhaust pipe (3), a spray pipe (4), a waste liquid pipe (5), a first control valve (6), a second control valve (7), a third control valve (8) and a pressure detection gauge (9), wherein one side of the connecting plate (1) is connected to the exhaust port of the velvet making equipment, and the air inlet of the exhaust pipe (3) is connected to the other side of the connecting plate (1); the main pipe (2) is divided into an upper pipe (21) and a lower pipe (22); the air inlet of the exhaust pump is connected to one end of the upper pipe (21), and the air outlet of the exhaust pipe (3) is connected to the lower pipe (22). The pipe wall of the lower pipe (22) is connected and communicated through the first control valve (6); the spray pipe (4) is connected between the other end of the upper pipe (21) and one end of the lower pipe (22); the other end of the lower pipe (22) is connected and communicated with the liquid inlet of the waste liquid pipe (5) through the second control valve (7); the water outlet of the water pump is connected and communicated with the spray pipe (4) through the third control valve (8); the pressure detection gauge (9) is connected to the lower pipe (22); and the detection port of the pressure detection gauge (9) is communicated with the interior of the lower pipe (22); The exhaust port of the exhaust pump is connected to an external filtering device, the liquid outlet of the waste liquid pipe (5) is connected to an external waste liquid tank, and the water inlet of the water pump is connected to an external water source.

2. The exhaust and cleaning device for a texturing device according to claim 1, characterized in that: The spray pipe (4) comprises: a first pipe, a second pipe and two bottom plates, the first pipe is sleeved on the outer circumference of the second pipe, a plurality of spray holes (41) are circumferentially provided on the pipe wall of the second pipe, the two bottom plates are both in the shape of a ring, the top end of the first pipe and the top end of the second pipe are respectively connected to the outer wall and the inner wall of the first bottom plate, the bottom end of the first pipe and the bottom end of the second pipe are respectively connected to the outer wall and the inner wall of the second bottom plate, and the water outlet of the water pump is connected to the first pipe.

3. The exhaust and cleaning device for a texturing device according to claim 2, characterized in that: Also includes: Two connecting pieces and two sealing rings, the first connecting piece is connected between the top end of the first pipe and the other end of the upper pipe (21), the second connecting piece is connected between the bottom end of the first pipe and one end of the lower pipe (22), and the two sealing rings are respectively connected between the inner walls of the two connecting pieces and the outer wall of the first pipe.

4. The exhaust and cleaning device for a texturing device according to claim 3, characterized in that: Also includes: a liquid inlet pipe (10) and a liquid outlet pipe (11), one end of the liquid inlet pipe (10) being connected to the water outlet of the water pump, the other end of the liquid inlet pipe (10) being connected to and in communication with the pipe wall of the first pipe, and the third control valve (8) being connected to the liquid inlet pipe (10); One end of the liquid outlet pipe (11) is connected to the other end of the lower pipe (22), and the other end of the liquid outlet pipe (11) is connected to the liquid inlet of the waste liquid pipe (5). The second control valve (7) is connected to the lower pipe (22) and is located above the connection between the lower pipe (22) and one end of the liquid outlet pipe (11) and below the connection between the lower pipe (22) and the exhaust port of the exhaust pipe (3).

5. The exhaust and cleaning device for a texturing device according to claim 1, characterized in that: Also includes: A branch pipe (12), one end of which is connected to the pipe wall of the lower pipe (22), and the other end of which is connected to the detection port of the pressure detection gauge (9).

Images