Valve mechanism for stripping tower residue discharge

Abstract

The utility model relates to the technical field of polycrystalline silicon production equipment, in particular to a valve mechanism for residue discharge of a stripping tower. According to the main technical scheme, the valve mechanism for removing the residues of the stripping tower comprises a valve and a pipe body structure, a connecting flange is arranged at one end of a valve body of the valve and is connected with an impurity outlet of the stripping tower; the pipe body structure is a straight pipe structure; a plurality of through holes are formed in the length direction of the pipe body structure; one end of the pipe body structure is fixedly connected to an inlet of the valve body and is communicated with the inlet of the valve body; the inner diameter of the pipe body structure is equal to that of the inlet of the valve body; the pipe body structure can be inserted into the impurity outlet. According to the utility model, the impurity outlet of the stripping tower can be prevented from being blocked, the normal production time is prolonged, and the frequency of shutdown maintenance is reduced; and moreover, the caking can be quickly cleaned, the production of the stripping tower is recovered, and the influence on the yield is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of polysilicon production equipment, and in particular to a valve mechanism for removing residues from a stripping tower. Background Technology

[0002] In the production of polysilicon, the reaction leaves behind many metal chloride impurities and unreacted silicon powder. These residues need to be processed by a stripping tower to separate the volatile components and remove solid impurities. Existing stripping towers have a conical lower section with an impurity outlet at the bottom. After prolonged operation, residues agglomerate inside the stripping tower. Small agglomerates are discharged from the impurity outlet; however, when the agglomerates are larger than the outlet, they block it, increasing the pressure differential and preventing the material from being discharged smoothly, thus affecting normal production. Currently, when the impurity outlet of the stripping tower is blocked, the only solution is to shut down the tower for maintenance, requiring either replacement and unblocking or alkaline washing to clean the agglomerated material. However, both methods disrupt the normal operation of the system and result in production losses. Utility Model Content

[0003] In view of this, the present invention provides a valve mechanism for removing impurities from a stripping tower. Its main purpose is to prevent the impurity outlet of the stripping tower from being blocked, extend normal production time, and reduce the number of shutdowns for maintenance. Furthermore, it can quickly clean up clumps, restore the production of the stripping tower, and reduce the impact on output.

[0004] To achieve the above objectives, this utility model mainly provides the following technical solutions:

[0005] An embodiment of this utility model provides a valve mechanism for removing residue from a stripping tower, comprising: a valve and a pipe body structure;

[0006] The valve body has a connecting flange at one end for connecting to the impurity outlet of the stripping tower;

[0007] The tube structure is a straight tube structure; multiple through holes are provided along the length of the tube structure.

[0008] One end of the tube structure is fixedly connected to the inlet of the valve body and communicates with the inlet of the valve body; the inner diameter of the tube structure is equal to the inner diameter of the inlet of the valve body; the tube structure can be inserted into the impurity outlet.

[0009] Furthermore, the plurality of through holes are distributed in two rows; the two rows of through holes are distributed opposite to each other on the sidewall of the tube structure.

[0010] Furthermore, the length of the tube structure is 500–900 mm;

[0011] The diameter of the through hole is 15-30 mm.

[0012] Furthermore, the valve is a manual valve.

[0013] By employing the above technical solution, the valve mechanism for residual removal in a stripping tower of this utility model has at least the following advantages:

[0014] It can prevent the impurity outlet of the stripping tower from being blocked, extend normal production time, and reduce the number of shutdowns for maintenance; in addition, it can quickly clean up clumps, restore the production of the stripping tower, and reduce the impact on output.

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 A schematic diagram of a valve mechanism for removing residue from a stripping tower, provided for an embodiment of this utility model;

[0017] Figure 2 A schematic diagram showing the connection between a valve mechanism for removing residue from a stripping tower and the stripping tower, provided in an embodiment of this utility model;

[0018] Figure 3 A schematic diagram of residue removal from a traditional stripping tower;

[0019] Figure 4 This is a schematic diagram illustrating the discharge of impurities when a valve mechanism for removing residues from a stripping tower is connected to the stripping tower, as provided in an embodiment of this utility model.

[0020] As shown in the figure:

[0021] 1 is the valve, 2 is the pipe structure, 3 is the through hole, 4 is the connecting flange, and 5 is the stripping tower. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0023] like Figures 1 to 4As shown in the figure, an embodiment of this utility model proposes a valve mechanism for removing residues from a stripping tower, comprising: a valve 1 and a pipe structure 2; one end of the valve body of the valve 1 has a connecting flange 4 for connecting to the impurity outlet of the stripping tower 5; preferably, the valve 1 is a manual valve 1; of course, it can also be an electric valve 1. The pipe structure 2 is a straight pipe structure; multiple through holes 3 are provided along the length direction of the pipe structure 2; the material to be discharged can enter the inlet of the valve body through the through holes 3 and be discharged through the valve 1. Since the material enters the pipe structure 2 through the through holes 3, and the inner diameter of the through holes 3 is smaller than the inner diameter of the pipe structure 2, the agglomerates passing through the through holes 3 are smaller than the inner diameter of the pipe structure 2, and will not cause blockage of the pipe structure 2. Preferably, the multiple through holes 3 are distributed in two rows; the two rows of through holes 3 are distributed opposite each other on the side wall of the pipe structure 2 to ensure that the through holes 3 have a large diameter and maintain the flowability of small particulate materials. Preferably, the length of the tube structure 2 is 500–900 mm; this ensures sufficient height after installation to prevent blockage. The diameter of the through hole 3 is 15–30 mm to allow normal passage of clumps. One end of the tube structure 2 is fixedly connected to the inlet of the valve body, communicating with the inlet; the inner diameter of the tube structure 2 is equal to the inner diameter of the valve body inlet; and the tube structure 2 can be inserted into the impurity outlet.

[0024] One embodiment of this utility model proposes a valve mechanism for removing impurities from a stripping tower. In implementation, when large clumps fall into the bottom impurity discharge port, only the lowest through-hole is blocked, while other through-holes can continue to discharge impurities. Because the pipe structure has a certain height and many through-holes, it is not easy for clumps to block all through-holes. Sufficient clumps of a certain size and height need to accumulate at the bottom of the stripping tower, especially the holes at the top of the pipe structure 2, which are less prone to blockage. The probability of large pieces of material or multiple small pieces of material concentrating at this location simultaneously is very small. Compared with traditional stripping towers, this significantly extends production time and reduces the number of shutdowns for maintenance. This valve mechanism for removing impurities from a stripping tower, as proposed in one embodiment of this utility model, can prevent the impurity outlet of the stripping tower 5 from being blocked, extending normal production time and reducing the number of shutdowns for maintenance. Furthermore, it can quickly clear clumps, restore production of the stripping tower, and reduce the impact on output.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A valve mechanism for stripping column venting, characterized by, Includes: valves and pipe structure; The valve body has a connecting flange at one end for connecting to the impurity outlet of the stripping tower; The tube structure is a straight tube structure; multiple through holes are provided along the length of the tube structure. One end of the tube structure is fixedly connected to the inlet of the valve body and communicates with the inlet of the valve body; the inner diameter of the tube structure is equal to the inner diameter of the inlet of the valve body; the tube structure can be inserted into the impurity outlet.

2. The valve mechanism for residual steam discharge from a stripping tower according to claim 1, characterized in that, The plurality of through holes are distributed in two rows; the two rows of through holes are distributed opposite to each other on the sidewall of the tube structure.

3. The valve mechanism for residual steam discharge from a stripping tower according to claim 1, characterized in that, The length of the tube structure is 500–900 mm; The diameter of the through hole is 15-30 mm.

4. The valve mechanism for residual steam discharge from a stripping tower according to claim 1, characterized in that, The valve is a manual valve.

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