Vertical air knife for drying equipment

Abstract

The utility model belongs to the technical field of drying equipment, and relates to a vertical air knife for drying equipment, which comprises two knife shells and a sealing gasket, the sealing gasket is clamped between the two knife shells, and a plurality of air guide grooves extending along the length direction of the knife shell are arranged on one surface of each knife shell facing the other knife shell. The positions of the air guide grooves in the two cutter shells correspond to each other, through holes corresponding to the positions of each pair of air guide grooves are formed in the sealing gasket, each pair of air guide grooves and the through holes define an air guide cavity extending in the length direction of the cutter shells, one end of the air guide cavity is open, the other end of the air guide cavity is closed, and a plurality of air blowing holes penetrating through the thickness direction of the cutter shells are formed in each air guide groove. According to the vertical type air knife, air pressure can be evenly distributed through the air guide cavity, hot air is sprayed outwards from the air blowing holes, and therefore air is blown to the positions right opposite to the two faces of the vertical type air knife, and the vertical type air knife can be arranged in the space between two flower baskets. The basket is used for discharging silicon wafers, and the vertical air knife can blow out hot air along the surfaces of the silicon wafers, so that drying is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, in particular to a vertical air knife used for drying equipment. Background Art

[0002] With the development of solar cell technology, the power generation efficiency of cells has been continuously improved, and the texturing process has also made great progress. In the process of texturing process development, the requirements for drying cells have become higher and higher. At present, conventional drying tanks still use porous air ducts to disperse airflow to dry silicon wafers and their carriers. With the development of industry technology, the half-chip process has entered the conventional production line. Half-chip carriers are more difficult to dry than full-chip carriers, especially on the carrier lever in the middle of the tank. Conventional porous air ducts are limited by space and cannot be installed in the middle of the basket. Therefore, when solving this problem, the method of increasing the number of drying tanks is usually adopted. Increasing the number of drying tanks in the existing industry solution mainly increases the investment in equipment costs and increases the length of the equipment. Its floor space is also increased, and the client's investment cost is also increased by a certain proportion.

[0003] Chinese patent CN 218179431U discloses a silicon wafer drying device, which blows hot air from both sides of the flower basket to the silicon wafers through the blowing pipe. Because the pipeline is generally arranged inside the side wall of the drying device, generally only two rows of blowing pipes can blow air to the silicon wafers. The farther away from the air outlet, the weaker the wind force. Therefore, generally only two flower baskets can be arranged side by side in the drying device. Once there are more than two, the drying effect will deteriorate.

[0004] Therefore need to improve drying device to solve the above problems. Summary of the invention

[0005] The main purpose of the utility model is to provide an upright wind knife for drying equipment, which can use a very small space to blow hot air from the interval area of ​​the flower basket to both sides, so as to achieve the effect of accelerating drying.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: an upright wind knife for drying equipment, comprising two knife shells and a sealing gasket, wherein the sealing gasket is clamped between the two knife shells, each knife shell is provided with a plurality of air guide grooves extending along the length direction of the knife shell on a side facing the other knife shell, the positions of the air guide grooves on the two knife shells correspond, and the sealing gasket is provided with through holes corresponding to the positions of each pair of air guide grooves, each pair of air guide grooves and the through holes form an air guide cavity extending along the length direction of the knife shell, one end of the air guide cavity is open and the other end is closed, and each air guide groove is provided with a plurality of blowing holes penetrating the thickness direction of the knife shell.

[0007] Specifically, the two blade housings are fixed together by a plurality of connecting bolts penetrating the blade housing in the thickness direction. The outer wall of the blade housing is divided into a plurality of parallel and equal rectangular areas. The connecting bolts are all located on the edges or corners of the rectangular areas. The position where the connecting bolts pass through the blade housing is located outside the air guide groove.

[0008] Specifically, a pair of mounting blocks and a plurality of connecting bolts are provided at one end of the upright wind knife, the mounting blocks are respectively located on the outer side surfaces of the knife housing, the connecting bolts pass through the mounting blocks and the knife housing and fix the two knife housings into one, and the position where the connecting bolts pass through the knife housing is located outside the air guide groove.

[0009] Specifically, the blowing hole is a round hole with a diameter of 0.5-2 mm or a narrow slit hole with a thickness of 0.4-1 mm.

[0010] The beneficial effects of the technical solution of the utility model are:

[0011] The vertical wind knife can evenly distribute the wind pressure through the wind guide cavity, and the hot wind is ejected outward from the blowing holes, thereby drying the positions directly facing the two sides of the vertical wind knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional diagram of an upright wind knife according to an embodiment;

[0013] Figure 2 is a cross-sectional view of a vertical air knife;

[0014] Figure 3 This is the assembly diagram of the knife housing and sealing gasket.

[0015] The numbers in the figure represent:

[0016] 1-blade housing, 11-air guide slot, 12-air blowing hole, 13-air guide cavity, 14-rectangular area;

[0017] 2-sealing gasket, 21-through hole;

[0018] 3-Mounting blocks;

[0019] 4-Connecting bolts;

[0020] 5-Install the bolts. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with specific embodiments.

[0022] Example:

[0023] like Figures 1 to 3As shown, the utility model is an upright wind knife for drying equipment, comprising two knife shells 1 and a sealing gasket 2, the sealing gasket 2 is clamped between the two knife shells 1, each knife shell is provided with a plurality of air guide grooves 11 extending along the length direction of the knife shell 1 on a side facing the other knife shell, the positions of the air guide grooves 11 on the two knife shells 1 correspond, and the sealing gasket 2 is provided with a through hole 21 corresponding to the position of each pair of air guide grooves 11, each pair of air guide grooves 11 and the through hole 21 form an air guide cavity 13 extending along the length direction of the knife shell 1, one end of the air guide cavity 13 is open, and the other end is closed, and each air guide groove 11 is provided with a plurality of blowing holes 12 penetrating the thickness direction of the knife shell 1.

[0024] The vertical wind knife is a narrow assembled structure. Two wind guide grooves 11 form a wind guide cavity 13 as the air intake channel of the vertical wind knife. The sealing gasket 2 ensures that there is no air leakage at other positions on the interface of the two blade shells 1, so that the wind pressure is evenly distributed in the wind guide cavity 13. Hot air can only be ejected from the blowing hole 12, so as to blow air to the positions facing each other on both sides of the vertical wind knife, so it can be arranged in the space between the two flower baskets. The flower basket is used to discharge silicon wafers, and the vertical wind knife can blow hot air along the board surface of the silicon wafer to achieve drying.

[0025] like Figure 1 As shown, the two blade housings 1 are fixed together by a plurality of connecting bolts 4 penetrating the thickness direction of the blade housing 1. The outer wall of the blade housing 4 is divided into a plurality of parallel and equal rectangular areas. The connecting bolts 4 are all located on the edge lines or corners of the rectangular areas. The position where the connecting bolts 4 pass through the blade housing 4 is located outside the air guide groove 11.

[0026] There is a very high sealing requirement between the two blade housings 1, so multiple bolt fixing positions are needed to press the two sides tightly, so that the sealing gasket 2 can seal and isolate each position between the contact surfaces to avoid gas leakage and affect the uniformity of pressure.

[0027] like Figure 1 As shown, a pair of mounting blocks 3 and a plurality of connecting bolts (not exposed) are provided at one end of the upright wind knife, the mounting blocks are respectively located on the outer side surfaces of the knife housing 1, the connecting bolts pass through the mounting blocks 3 and the knife housing 1 and fix the two knife housings 1 as a whole, and the position where the connecting bolts pass through the knife housing 1 is located outside the air guide groove 11.

[0028] The vertical wind knife is fixed as a whole by connecting bolts 4, and the mounting blocks 3 are also fixed at both ends of the knife housing 1. Because the side range of the knife housing 1 is very small, it needs to be connected with the mounting blocks 3 when it is assembled on the drying equipment, that is, the mounting blocks 3 are also mounted on the inner wall of the drying equipment by mounting bolts 4 along the horizontal direction.

[0029] like Figure 1 As shown, the blowing hole 12 is a round hole with a diameter of 0.5-2 mm, and can also be a narrow slit hole with a thickness of 0.4-1 mm.

[0030] The hot air blown out from the blowing hole 12 needs to have a relatively large initial velocity, otherwise it is difficult to blow to the silicon wafer surface in the flower basket. Therefore, the diameter of the blowing hole 12 is smaller or the thickness is thinner, thereby increasing the air flow speed and ensuring the drying effect on the silicon wafer surface.

[0031] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A vertical air knife for drying equipment, characterized in that: It includes two knife shells and a sealing gasket, which is clamped between the two knife shells. Each knife shell is provided with a plurality of air guide grooves extending along the length direction of the knife shell on a side facing the other knife shell. The positions of the air guide grooves on the two knife shells correspond and the sealing gasket is provided with through holes corresponding to the positions of each pair of air guide grooves. Each pair of air guide grooves and the through holes form an air guide cavity extending along the length direction of the knife shell, and one end of the air guide cavity is open and the other end is closed. Each air guide groove is provided with a plurality of blowing holes penetrating the thickness direction of the knife shell.

2. The vertical air knife for drying equipment according to claim 1, characterized in that: The two blade housings are fixed together by a plurality of connecting bolts penetrating the blade housing in the thickness direction. The outer wall of the blade housing is divided into a plurality of parallel and equal rectangular areas. The connecting bolts are all located on the edge lines or corners of the rectangular areas. The position where the connecting bolts pass through the blade housing is located outside the air guide groove.

3. The vertical air knife for drying equipment according to claim 1, characterized in that: A pair of mounting blocks and a plurality of connecting bolts are provided at one end of the upright wind knife, wherein the mounting blocks are respectively located on the outer side surfaces of the knife housing, and the connecting bolts pass through the mounting blocks and the knife housing and fix the two knife housings as one, and the position where the connecting bolts pass through the knife housing is located outside the air guide groove.

4. The vertical air knife for drying equipment according to claim 1, characterized in that: The blowing hole is a round hole with a diameter of 0.5-2 mm or a narrow slit hole with a thickness of 0.4-1 mm.

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