Flow uniformizing plate of groove type machine table
By combining vertical and inclined uniform holes on the uniform flow plate of the groove machine, and optimizing the arrangement and size of the uniform holes, the problem of poor suede uniformity in the prior art is solved, and a more efficient circulation of the medicine liquid is achieved. And a more even suede effect.
Patent Information
- Application Number
- CN202421100608.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-05-20
AI Technical Summary
It is difficult to achieve suede uniformity during the velvet making process of existing groove machine machines, which affects the effect of velvet making.
A new groove machine uniform plate is designed, adopting a combination of two uniform holes, vertical and inclined uniform holes, with two opposite inclined directions, and a central uniform array and Local uniform flow array, equal interval arrangement between uniform flow holes, and optimum aperture size and interval.
By optimizing the structure of the uniform plate, the density and diversity of the uniform holes are increased, the uniform circulation of the medicine liquid is improved, the uniformity of suede and the velvet making effect are improved, and the efficiency is improved by 0.02-0.03%.
Smart Images
Figure CN222510920U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of photovoltaic cell production and manufacturing, in particular to a trough type machine flow plate. Background Art
[0002] The preparation process of photovoltaic cells includes cleaning, texturing, diffusion, etching / PSG removal, PECVD, screen printing, sintering and other steps. Among them, a trough machine is required in the texturing process, including main and auxiliary troughs, circulation pumps, online heating rods, circulation tanks, bubbling tubes, flow equalizers and other structures. The flow equalizer is set at the bottom of the trough to evenly disperse the liquid circulation, which affects the uniformity of the velvet surface. Therefore, in order to further improve the uniformity of the velvet surface and improve the texturing effect, it is necessary to design a new flow equalizer. Utility Model Content
[0003] The utility model aims to provide a trough type machine flow plate, which improves the velvet making effect and makes the velvet surface more uniform through structural optimization.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a slot-type machine flow plate, comprising a flow plate body and a plurality of flow holes opened thereon, the flow holes comprising a first flow hole, a second flow hole and a third flow hole, the second flow hole being a through hole opened vertically on the flow plate body, the first flow hole and the third flow hole being through holes opened obliquely through the flow plate body, and the inclination directions of the two are opposite, a central flow array and a local flow array are horizontally arranged along the length direction on the flow plate body, the central flow array comprising a row of first flow holes and a row of third flow holes, the local flow array comprising multiple rows of first flow holes, second flow holes and third flow holes, each row having only one type of flow hole, and the second flow hole row being located between the first flow hole row and the third flow hole row.
[0005] As a further improved technical solution of the utility model, the uniform flow holes in each row are arranged at equal intervals, and the uniform flow holes in each row are arranged at equal intervals.
[0006] As a further improved technical solution of the present invention, the inclination angles of the first flow-uniform hole and the third flow-uniform hole are 30°-60°.
[0007] As a further improved technical solution of the utility model, the diameter of the flow-uniform hole is 0.2cm-0.3cm.
[0008] As a further improved technical solution of the utility model, there are four local uniform flow arrays, which are distributed on both sides of the central uniform flow array and are arranged corresponding to the flower basket positions.
[0009] As a further improved technical solution of the utility model, in the local flow-uniform array, the second flow-uniform hole is arranged in a staggered manner with the first flow-uniform hole and the third flow-uniform hole.
[0010] As a further improved technical solution of the utility model, the interval between the flow-uniform holes is 0.25 cm-0.35 cm.
[0011] The slot-type machine flow plate of the utility model is provided with two kinds of flow holes, vertical and inclined, on the flow plate body, and the inclined flow holes also have two relative inclined directions. Compared with the flow holes only opened vertically in the prior art, the bubble dispersion is optimized and the dead angle area is reduced. In addition, the aperture of the flow holes is reduced in the utility model. Compared with the 0.5 cm flow holes in the prior art, more small-aperture flow holes in the present application can be provided on the flow plate body, thereby increasing the overall number of flow holes. The flow holes on the flow plate with the same area are denser, so that the circulation of the medicine solution can be more uniform during the texturing process, and the silicon wafer at the bottom of the slot body can react more fully with the medicine solution, thereby improving the uniformity of the texturing surface. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the flow equalizer of the utility model.
[0013] Figure 2 It is a plan view of the flow equalizer of the utility model.
[0014] Figure 3 for Figure 2 Middle AA section view.
[0015] Figure 4 for Figure 2 Middle BB cross-section.
[0016] Figure 5 for Figure 2 Middle CC section. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. For ease of description, the accompanying drawings only show parts related to the utility model rather than all structures.
[0018] Ginseng Figure 1As shown, the utility model provides a slot-type machine flow plate, including a flow plate body 1 and a plurality of flow holes 2 opened thereon, the flow holes 2 including a first flow hole 21, a second flow hole 22 and a third flow hole 23, the second flow hole 22 is a through hole opened vertically on the flow plate body 1, the first flow hole 21 and the third flow hole 23 are through holes opened obliquely through the flow plate body 1, and the first flow hole 21 and the third flow hole 23 are inclined in opposite directions, and the inclination angle with the horizontal direction is 30°-60°, preferably 45° in this embodiment, as shown in FIG. Figure 3 The first uniform flow hole 21 is inclined at an angle of 45° to the horizontal direction and is inclined to the right. Figure 5 The third uniform flow hole 23 is inclined at an angle of 45° to the horizontal direction and is inclined to the left. Figure 4 The second flow-uniform hole 22 is a 90° straight hole.
[0019] Ginseng Figure 2 As shown, a central flow array 11 and a local flow array 12 are horizontally arranged on the flow plate body 1 along the length direction of the flow plate body 1. There are four local flow arrays 12, which are distributed on both sides of the central flow array 11, just corresponding to the four flower basket positions in the slot body. The central flow array 11 includes a row of first flow holes 21 and a row of third flow holes 23, and the local flow array 12 includes multiple rows of first flow holes 21, second flow holes 22 and third flow holes 23, wherein each row has only one type of flow holes, and the row of second flow holes 22 is located between the row of first flow holes 21 and the row of third flow holes 23, that is, the local flow array 12 is arranged in a regular cycle of the first flow holes 21, the second flow holes 22, the third flow holes 23, the second flow holes 22, the first flow holes 21, the second flow holes 22, the third flow holes 23, and the second flow holes 22. The rows are arranged at equal intervals, and the flow-uniform holes 2 in each row are also arranged at equal intervals. The interval between the flow-uniform holes is 0.25 cm-0.35 cm, preferably 0.3 cm, and the aperture of the flow-uniform holes 2 is 0.2 cm-0.3 cm.
[0020] Compared with the 0.5cm aperture and 0.5cm interval uniform flow holes in the prior art, the small-aperture and narrow-spacing uniform flow holes 2 of the present application can be set more on the uniform flow plate body under the same area, and the circulation dispersion is more uniform. The circulation contact area of the silicon wafer at the bottom of the trough body is more uniform during the circulation. In addition, three groups of air holes with bidirectional angles of 45° and vertical angles of 90° are arranged alternately in a cycle. The air hole angle design is added on the basis of the original dense air holes. From the perspective of the generated bubbles, the dispersion of bubbles at different angles can further compress the amount of bubbles and reduce the dead corners, so that the silicon wafer at the bottom can react more fully with the drug solution, the velvet surface is more uniform, and the efficiency is improved by 0.02-0.03%. Secondly, tests show that it can also improve the fracture strength of the silicon wafer and reduce a certain fragmentation rate.
[0021] Terms such as "left" and "right" used herein to indicate spatial relative positions are used for the purpose of convenience to describe the relationship of one feature relative to another feature as shown in the drawings. It is understood that, depending on the placement of the product, the terms of spatial relative positions may be intended to include different orientations in addition to the orientation shown in the drawings, and should not be construed as limiting the claims.
[0022] In addition, the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on the technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in the field should understand that the technical personnel in the relevant technical field can still modify or make equivalent substitutions to the present invention, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.
Claims
1. A trough type machine flow plate, characterized in that: It includes a flow equalizer plate body and a plurality of flow equalizer holes opened thereon, the flow equalizer holes include a first flow equalizer hole, a second flow equalizer hole and a third flow equalizer hole, the second flow equalizer hole is a through hole opened vertically on the flow equalizer plate body, the first flow equalizer hole and the third flow equalizer hole are through holes opened obliquely through the flow equalizer plate body, and the two inclination directions are opposite, a central flow equalizer array and a local flow equalizer array are horizontally arranged along the length direction on the flow equalizer plate body, the central flow equalizer array includes a row of first flow equalizer holes and a row of third flow equalizer holes, the local flow equalizer array includes multiple rows of first flow equalizer holes, second flow equalizer holes and third flow equalizer holes, each row has only one type of flow equalizer hole, and the second flow equalizer hole row is located between the first flow equalizer hole row and the third flow equalizer hole row.
2. The trough type machine flow plate according to claim 1, characterized in that: The flow-uniform holes in each row are arranged at equal intervals, and the flow-uniform holes in each row are arranged at equal intervals.
3. The trough type machine flow plate according to claim 1, characterized in that: The inclination angles of the first flow-uniform hole and the third flow-uniform hole are 30°-60°.
4. The trough type machine flow plate according to claim 1, characterized in that: The diameter of the flow-uniform hole is 0.2 cm to 0.3 cm.
5. The trough type machine flow plate according to claim 1, characterized in that: There are four local uniform flow arrays, which are distributed on both sides of the central uniform flow array and are arranged corresponding to the positions of the flower baskets.
6. The trough type machine flow plate according to claim 1, characterized in that: In the local flow-uniform array, the second flow-uniform hole is arranged in a staggered manner with the first flow-uniform hole and the third flow-uniform hole.
7. The trough type machine flow plate as claimed in claim 2, characterized in that: The intervals between the flow-uniform holes are 0.25 cm to 0.35 cm.