Combined screen

Abstract

The utility model discloses a combined screen in the technical field of screens, which comprises a first screen and a second screen, a plurality of first screen line plates are arranged on the first screen in parallel, second screen line plates are arranged on the second screen in parallel, the first screen and the second screen are mounted and fixed through a clamping part, and the first screen and the second screen are arranged in parallel. Wherein the first screen mesh and the second screen mesh are fixed, and the first screen mesh plate and the second screen mesh plate are parallel; the top of the second screening plate and the top of the first screening plate are located on the same horizontal plane. A traditional screen is designed into a combined screen, the first screen and the second screen are combined to form a detachable screen form, when particle silicon is detained in the distance between the screens, the first screen and the second screen can be opened, the particle silicon at the position can be rapidly discharged, and after treatment is completed, the particle silicon can be rapidly discharged. The two screens can be rapidly and stably fixed through the clamping parts and then continue to be put into production, and operation is easy; the cleaning time is greatly shortened, and the operation efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of sieve technology, specifically to a combined sieve. Background Technology

[0002] Granular silicon is produced using a fluidized bed process. In this process, silane gas enters the fluidized bed and is heated to 600℃-1000℃, where it decomposes into silicon and hydrogen. The silicon accumulates on the seed crystals, growing into particles of a certain size, which are then collected in a product collector for sale. The granular silicon product is approximately spherical. During sieving, some silicon particles have a diameter that matches the screen spacing, causing them to become stuck on the screen and affecting sieving efficiency. This requires cleaning during shutdowns, which is time-consuming. Utility Model Content

[0003] The purpose of this application is to provide a combined screen to solve the problem of low cleaning efficiency in the prior art.

[0004] To achieve the above objectives, this application employs the following technical solution:

[0005] This application discloses a combined screen, which includes a first screen and a second screen. A plurality of first screen plates are arranged in parallel on the first screen, and a second screen plate is arranged in parallel on the second screen. The first screen and the second screen are installed and fixed by a locking part. The first screen and the second screen are fixed, and the first screen plate and the second screen plate are parallel. The top of the second screen plate and the top of the first screen plate are on the same horizontal plane.

[0006] In a further embodiment of this application, the first screen and the second screen are fixed, and the bottom of the second screen plate is at a height not lower than the bottom of the first screen plate.

[0007] In a further embodiment of this application, the engaging portion includes a first mounting portion and a second mounting portion. The first mounting portion is disposed on the side surface of the first screen, and the second mounting portion is disposed on the side surface of the second screen. The first mounting portion and the second mounting portion cooperate to fix the screen in place.

[0008] In a further embodiment of this application, both the first and second screens are cylindrical, and both the first and second screens are made of metal.

[0009] In a further embodiment of this application, the height of the outer edge of the first screen gradually decreases towards the center.

[0010] In a further embodiment of this application, a first mark is provided on the first screen, a second mark is provided on the second screen, the first screen and the second screen are fixed, and the second mark corresponds to the first mark.

[0011] In a further embodiment of this application, the first screen plate and the second screen plate are of equal length, the first screen and the second screen are fitted with a clearance and connected by an adjusting part; the adjusting part includes a screw, the first screen is provided with a threaded hole, the screw is rotatably mounted on the second screen, and the screw is threaded into the threaded hole.

[0012] In a further embodiment of this application, the distance between adjacent first and second sieve plates is 1-2 mm.

[0013] The beneficial effects of this application are as follows:

[0014] In this application, the traditional screen is designed as a combination device. The combination of the first screen and the second screen forms a detachable screen. When silicon particles happen to be stuck in the screen spacing, the first screen and the second screen can be opened to allow the silicon particles to be discharged quickly. After processing, the two screens can be quickly and stably fixed by the locking part, and then production can continue. The operation is simple and convenient, greatly reducing cleaning time and speeding up work efficiency.

[0015] In this design, an adjustment section is added to the first and second screens. The adjustment section connects the inner screen to the outer screen through the cooperation of a screw and a threaded hole. The screw and the outer screen are rotatably installed, and the screen spacing of the combined screen can be adjusted by rotating the screw. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the combined screen structure in an embodiment of this application;

[0017] Figure 2 for Figure 1 A cross-sectional view of the first screen along the BB direction;

[0018] Figure 3 for Figure 1 Cross-sectional view of the second screen along the BB direction

[0019] Figure 4 for Figure 1 A cross-sectional view of the combined screen along the AA direction.

[0020] Wherein: 1. First screen; 2. Second screen; 11. First mounting part; 12. First screen plate; 21. Second mounting part; 22. Second screen plate. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0022] like Figure 1 and Figure 2 As shown, this embodiment discloses a combined screen for screening granular silicon. This combined screen includes two main parts: a first screen 1 and a second screen 2. The first screen 1 is provided with a plurality of first screening plates 12 arranged in parallel, and the second screen 2 is provided with a second screening plate 22 arranged in parallel. The first screen 1 and the second screen 2 are installed and fixed by a snap-fit ​​part, wherein the first screen 1 and the second screen 2 are fixed, and the first screening plates 12 and the second screening plates 22 are parallel. It should be noted that the top of the second screening plate 22 and the top of the first screening plate 12 are on the same horizontal plane. In short, the top of the second screening plate 22 and the top of the first screening plate 12 need to be flush.

[0023] When in use, granular silicon mixed with square or rectangular polycrystalline silicon (mixed silicon) passes through this combined sieve. The diameter of the granular silicon is generally 1-2 mm. The size of the square or rectangular polycrystalline silicon is larger than the diameter of the granular silicon. The required granular silicon will be "filtered out" from the gap between the first sieve plate 12 and the second sieve plate 22. When some granular silicon has a diameter equal to the sieve spacing, the granular silicon will be placed within the sieve spacing. At this time, the operator only needs to separate the upper and lower first sieve 1 and second sieve 2. Then the first sieve plate 12 and the second sieve plate 22 move relative to each other. After the sieve plates are misaligned, the granular silicon between them is discharged. The operation is simple and convenient. The sieve is also easy to disassemble. The sieves with different sieve plate installation positions can be combined according to different screening diameter requirements. For example, one first sieve 1 is matched with several second sieves 2. Each second sieve 2 and the first sieve 1 will form a different first sieve plate 12 and second sieve plate 22 spacing after assembly. Adaptive assembly can be performed to meet other diameter selection requirements.

[0024] As attached Figure 4 As shown, in this embodiment, after the first screen 1 and the second screen 2 are fixed, the horizontal plane at the bottom of the second screen plate 22 is not lower than the horizontal plane at the bottom of the first screen plate 12, ensuring the overall aesthetics of the device.

[0025] As attached Figure 2 and 3As shown, the engaging part in this embodiment uses an interference fit connection, which can also be understood as a plug-in connection. Both the first screen 1 and the second screen 2 are cylindrical. The engaging part includes a first mounting part 11 and a second mounting part 21. The first mounting part 11 is located on the side surface of the first screen 1, and the second mounting part 21 is located on the side surface of the second screen 2. The first mounting part 11 and the second mounting part 21 are engaged and fixed. Generally, the designers have chosen a relatively practical mounting structure. A flange is axially provided on the side surface of the first screen 1, and a mounting groove is axially provided on the side surface of the second screen 2. During assembly, the flange is placed in the mounting groove, and the two screens are combined and fixed. It should be noted that the radially outer edges of the two screens are flush after assembly.

[0026] Considering the structural characteristics of the sieve in this embodiment, since the shape of granular silicon is approximately sphere-like, the first screen 1 is used as the top surface, and the height of the outer edge of the first screen 1 gradually decreases towards the center; in actual production, the surface of the first screen 1 in the physical product looks like a plate, which has a certain aggregation effect.

[0027] To facilitate quick and easy fixing of the upper and lower screens and ensure that the first screen plate 12 and the second screen plate 22 are parallel to each other, some embodiments have a first mark on the first screen 1 and a second mark on the second screen 2. When the first screen 1 and the second screen 2 are fixed, the second mark corresponds to the first mark. When these two marks are aligned, it indicates that the two screen plates are in a parallel state after installation.

[0028] In another embodiment, the first screen 1 and the second screen 2 are cuboids, and are fitted with a gap. All the first screen plates 12 and the second screen plates 22 are of equal length and are connected by an adjusting part. The adjusting part includes a screw. In this embodiment, the first screen 1 has a threaded hole on its side. The screw is rotatably mounted on the second screen 2, and the screw thread fits into the threaded hole. If necessary, two screws can be installed on the device, with the two screws spaced apart. By rotating the screws, the spacing between adjacent first screen plates 12 and second screen plates 22 can be unified. The first screen 1 and the second screen 2 are made of metal, and stainless steel can be used here.

[0029] In summary, the combined screen in this embodiment is divided into upper and lower parts and then combined. When cleaning the screen, the upper and lower parts are separated, which can quickly achieve the cleaning of the screen.

[0030] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

Claims

1. A combined screen, characterized in that, It includes a first screen and a second screen. A plurality of first screen plates are arranged in parallel on the first screen, and a second screen plate is arranged in parallel on the second screen. The first screen and the second screen are installed and fixed by a locking part. The first screen and the second screen are fixed, and the first screen plate and the second screen plate are parallel. The top of the second screen plate and the top of the first screen plate are on the same horizontal plane.

2. The combined screen according to claim 1, characterized in that, The first screen and the second screen are fixed, and the bottom of the second screen plate is at a height not lower than the bottom of the first screen plate.

3. The combined screen according to claim 1, characterized in that, The engaging part includes a first mounting part and a second mounting part. The first mounting part is disposed on the side surface of the first screen, and the second mounting part is disposed on the side surface of the second screen. The first mounting part and the second mounting part cooperate to fix each other.

4. The combined screen according to claim 1, characterized in that, Both the first and second screens are cylindrical.

5. The combined screen according to claim 1, characterized in that, The height of the outer edge of the first screen gradually decreases towards the center.

6. The combined screen according to claim 1, characterized in that, The first screen is provided with a first mark, and the second screen is provided with a second mark. The first screen and the second screen are fixed, and the second mark corresponds to the first mark.

7. The combined screen according to claim 1, characterized in that, The first and second screens are made of metal.

8. The combined screen according to any one of claims 1 to 7, characterized in that, The distance between adjacent first and second sieve plates is 1~2mm.

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