Filtering mechanism and gas and solid powder separation device

Abstract

The utility model relates to a chemical equipment field especially a filter mechanism and gas and solid powder separation device, including filter core, the filter core end part is equipped with mounting piece, and bracket, the mounting piece and the bracket between are the movable connection, be equipped with the spacer that the mounting piece is limited the displacement of mounting piece in the moving direction of mounting piece on the mounting piece, be equipped with flexible connecting piece between the bracket and spacer, the utility model discloses through the setting of upside support subassembly, can fixed filter core position, and through the setting of flexible connecting piece, realize the flexible connection of filter core and bracket, effectively buffered the mechanical impact that filter core received, through the support subassembly of downside setting, filter core passes through the support ring of downside support subassembly but does not use spacer fixed, makes filter core lower end can be displaced along the support ring up and down, and the circumferential relative position is fixed, further improved the impact resistance of filter core and the stability of relative position.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment, and in particular to a filtration mechanism and a gas-solid powder separation device. Background Technology

[0002] The material emanating from the cold hydrogenation reactor contains chlorosilanes, unreacted silicon powder, and hydrogen; direct discharge would result in material waste. A filter is typically used for initial separation, followed by purification of the chlorosilanes in a scrubbing tower. However, the large amount of unseparated silicon powder carried into the scrubbing tower causes malfunctions. Therefore, inventing a device for effectively separating chlorosilanes and silicon powder is crucial. Conventional silicon powder filters suffer from incomplete separation, bottom clogging, and easily damaged or dislodged filter elements. Utility Model Content

[0003] In view of the problem of incomplete separation of silicon powder, chlorosilane, and hydrogen in the cold hydrogenation reaction production process mentioned above or in the prior art, this utility model is proposed.

[0004] Therefore, the purpose of this invention is to provide a filtration mechanism.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a filtration mechanism, comprising: a filter element, wherein an installation member is provided at the end of the filter element; and a bracket, wherein the installation member and the bracket are movably connected, the installation member is provided with a limiting member that restricts the displacement of the installation member in the moving direction of the installation member, and a flexible connecting member is provided between the bracket and the limiting member.

[0006] In a preferred embodiment of the filtration mechanism of this utility model, the bracket includes a plurality of support rings evenly spaced apart, and adjacent support rings are connected by connecting rods; the mounting member passes through the support rings and is movably connected to the bracket in the axial direction.

[0007] In a preferred embodiment of the filtration mechanism of this utility model, the number of filter elements corresponds to the number of support rings.

[0008] In a preferred embodiment of the filtration mechanism of this utility model, the bracket is configured as two sets, which are respectively connected to the mounting parts at both ends of the filter element.

[0009] In a preferred embodiment of the filtration mechanism of this utility model, the flexible connector is sleeved on the mounting member, wherein the flexible connector is configured as a spring.

[0010] The beneficial effects of the filtration mechanism of this utility model are as follows: The upper support component can fix the position of the filter element, and the flexible connector can achieve a flexible connection between the filter element and the bracket, effectively buffering the mechanical impact on the filter element; the lower support component allows the filter element to move up and down along the support ring without using a limiting component, while the circumferential relative position is fixed, further improving the filter element's impact resistance and relative position stability.

[0011] In actual use, there is still the problem that the filter element inside the separation device is difficult to clean after it becomes clogged.

[0012] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: a gas and solid powder separation device, comprising a device body, the device body including a cylinder, and a filter mechanism installed inside the cylinder.

[0013] In a preferred embodiment of the gas and solid powder separation device of this utility model, the filtration mechanism is installed along the axial direction of the cylinder and is fixedly connected to the inner wall of the cylinder.

[0014] As a preferred embodiment of the gas and solid powder separation device of this utility model, the main body of the device further includes a material inlet / outlet component and a purging component, which are respectively installed on the cylinder.

[0015] In a preferred embodiment of the gas and solid powder separation device of this utility model, the material inlet and outlet assembly includes a feed pipe disposed in the middle of the cylinder, which can introduce the material to be separated into the cylinder; a gas outlet disposed at the top of the cylinder for discharging gas; and a powder outlet disposed at the conical end cap at the bottom of the cylinder for discharging solid powder.

[0016] In a preferred embodiment of the gas and solid powder separation device of this utility model, the purging assembly includes a filter element purging inlet pipe, which comprises several groups and is respectively disposed at the top of the cylinder, with the portion of the filter element purging inlet pipe extending into the cylinder parallel to the axis of the cylinder; and a discharge port purging pipe, which is disposed at the bottom of the cylinder, with the portion of the discharge port purging pipe extending into the cylinder facing the powder discharge port.

[0017] The beneficial effects of this utility model's gas and solid powder separation device are as follows: This utility model effectively separates chlorosilane and silicon powder through the setting of the filter element, the selection of the filter element material, and the control of process parameters; the setting of the purging component enables the filter element to be cleaned without disassembling the device; the structure of the bottom conical head makes the discharge of solid powder smoother and avoids clogging at the bottom of the device body. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the filter element.

[0020] Figure 2 This is a structural diagram of the bracket.

[0021] Figure 3 This is a schematic diagram of the overall filtration mechanism.

[0022] Figure 4 This is the main view of the filtering mechanism.

[0023] Figure 5 This is a schematic diagram of a gas-solid powder separation device.

[0024] Figure 6 This is a schematic diagram of the process flow of a gas and solid powder separation device. Detailed Implementation

[0025] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0026] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0027] In this invention, the filtration mechanism is installed in the separation device to separate the chlorosilane and residual hydrogen produced in the cold hydrogenation reactor from the unreacted silicon powder. The silicon powder falls to the bottom of the filtration mechanism due to its own gravity, while the chlorosilane and hydrogen enter the next reaction device through the filter element of the filtration mechanism.

[0028] Reference Figure 1 As a first embodiment of the present invention, a filtration mechanism is provided, including a filter element 100. The filter element 100 is made of high-precision ceramic, polytetrafluoroethylene, or glass fiber, etc., with a precision of 0.1 to 0.3 μm.

[0029] The filter element 100 has a mounting member 101 at its end, which is a rod for inserting into the bracket 200. Specifically, the mounting member 101 and the bracket 200 are movably connected, meaning the filter element 100 can move up and down relative to the bracket 200 along its own axial direction. A limiting member 102 is installed on the mounting member 101, which can fix the filter element 100 to the bracket 200 to limit the range of movement of the filter element 100. A flexible connector 103 is provided between the bracket 200 and the limiting member 102. Specifically, the flexible connector 103 can buffer the impact force between the filter element 100 and the bracket 200 during movement.

[0030] Reference Figures 2-4 As a second embodiment of the present invention, unlike the previous embodiment, the bracket 200 includes a plurality of support rings 202 distributed at equal intervals, and the number of filter elements 100 corresponds to the number of support rings 202.

[0031] Adjacent support rings 202 are connected by connecting rods 203; mounting piece 101 passes through support rings 202 and is movably connected to bracket 200 in the axial direction.

[0032] Several connecting rods 203 are interwoven into a mesh, and the shape of the gap holes 204 can be circular, triangular or polygonal. The shape of the gap holes 204 is not limited here, as long as the filter element 100 is evenly distributed after it is installed on the bracket 200. The evenly distributed distribution of the filter elements 100 is conducive to improving the filtration efficiency of the filter element 100 to be filtered gas.

[0033] It should be noted that in the accompanying drawings of this embodiment, the gap hole 204 is shown as an example in the form of a quadrilateral and a trilateral.

[0034] Specifically, the filter element 100 has an installation member 101 at at least one end. The installation member 101 can pass through the support ring 202 and the flexible connector 103 and form a flexible connection with the bracket 200.

[0035] In this embodiment, mounting parts 101 are installed at both ends of the filter element 100. Specifically, end caps 105 are first installed at both ends of the filter element 100 to protect both ends of the filter element 100 from impacts from other equipment. Mounting parts 101 are welded to the outside of the end caps 105, and the outer diameter of the mounting parts 101 is smaller than the outer diameter of the filter element 100.

[0036] According to the arrangement of the mounting components 101, the brackets 200 are configured in two sets, which are respectively connected to the mounting components 101 at both ends of the filter element 100. The brackets 200 are used to connect the filter element 100 to form a filtration mechanism; at the same time, the brackets 200 are also used to fix and connect to the separation device.

[0037] Reference Figure 4 As the third embodiment of this utility model, unlike the previous embodiment, the flexible fixed connection refers to the installation of a flexible connector 103 between the filter element 100 and the bracket 200. The flexible connection can provide the filter element with a certain impact resistance, that is, when the filter element 100 is subjected to mechanical vibration, it can undergo axial position displacement within a certain range to buffer the impact force.

[0038] In this embodiment, the flexible connector 103 is preferably a spring, which is easy to install, has a mature manufacturing process, and is convenient to purchase.

[0039] Alternatively, the flexible connector 103 can also be a rubber pad, which can be obtained by cutting the rubber pad according to the working conditions.

[0040] The following describes the flexible connection relationship between a set of filter elements 100 and flexible connectors 103.

[0041] In this embodiment, preferably, the bracket 200 is configured as two sets, which are respectively installed at the upper and lower ends of the filter element 100.

[0042] When the filter element 100 is flexibly connected to the upper bracket 200, the upper mounting piece 101 passes through the support ring 202, then the bracket gasket 104 is fitted onto the mounting piece 101, then the flexible connector 103 is fitted onto the mounting piece 101, then the nut washer 106 is fitted onto the mounting piece 101, and finally one end of the mounting piece 101 is screwed with the upper limit piece 102, which is set as a nut; so that the filter element 100 is suspended on the bracket 200 through the flexible connector 103; when the filter element 100 is impacted, the flexible connector 103 deforms to offset the impact on the filter element 100.

[0043] When the filter element 100 is flexibly connected to the lower bracket 200, the lower mounting member 101 first passes through the flexible connector 103, then the bracket gasket 104 is fitted onto the mounting member 101, and then the mounting member 101 passes through the support ring 202. This allows indirect contact between the lower side of the filter element 100 and the bracket 200 through the flexible connector 103. When the filter element 100 is impacted, the lower mounting member 101 can move up and down along the lower support ring 202, further offsetting the impact on the filter element 100 and effectively limiting the circumferential position of the filter element 100. The position of the lower bracket 200 is limited by its overall installation position with the device.

[0044] Alternatively, the connecting rod 203 can be made of steel wire rope, and the support ring 202 can be connected into a net using the steel wire rope. The flexibility of the steel wire rope can be used to offset the impact on the filter element 100.

[0045] Reference Figure 5 As the fourth embodiment of this utility model, unlike the previous embodiment, this utility model also proposes a gas and solid powder separation device, including a device body 300, which includes a cylinder 301. A filter mechanism is installed inside the cylinder 301. Specifically, the upper and lower brackets 200 are fixedly connected to preset positions inside the cylinder 301 so as to effectively limit the filter element 100. After the material discharged from the cold hydrogenation reactor enters the cylinder 301, due to the pressure difference between the inside of the cylinder 301 and the outside, the gaseous part of the material discharged from the cold hydrogenation reactor inside the cylinder 301, namely chlorosilane and hydrogen, is released through the filter mechanism, while the solid powder part, namely silicon powder, is deposited at the bottom of the cylinder 301 and then discharged.

[0046] Furthermore, the filter mechanism is installed along the axial direction of the cylinder 301, and the bracket 200 is welded or bolted to the inner wall of the cylinder 301, so that the filter mechanism and the cylinder 301 form a coaxial connection.

[0047] Furthermore, the main body 300 of the device also includes a material inlet / outlet component 303 and a purging component 304, which are respectively installed on the cylinder 301. Specifically, the material inlet / outlet component 303 is used to feed materials into the cylinder 301 and discharge the separated materials, while the purging component 304 is used to clean the filter mechanism and the outlet of the solid grinding material.

[0048] Preferably, the material inlet / outlet assembly 303 includes: a feed pipe 303c, which is located in the middle of the cylinder 301 and can introduce the material to be separated into the cylinder 301; a gas outlet 303a, which is located at the top of the cylinder 301 and is used to discharge chlorosilane and hydrogen; and a powder outlet 303b, which is located on the conical end cap 302 at the bottom of the cylinder 301 and is used to discharge silicon powder.

[0049] During filtration, a mixture of silicon powder, chlorosilane, and hydrogen enters the device through the feed pipe 303c. After separation by the filter element 100, the chlorosilane and hydrogen are discharged from the gas discharge port 303a at the top, while the silicon powder is deposited at the conical end cap 302 at the bottom of the device and discharged through the powder discharge port 303b.

[0050] The purging assembly 304 includes a filter element purging inlet pipe 304a. The filter element purging inlet pipe 304a comprises several sets, which are respectively disposed on the top of the cylinder 301. The portion of the filter element purging inlet pipe 304a extending into the cylinder 301 is parallel to the axis of the cylinder 301. Therefore, the filter element purging inlet pipe 304a can purge along the axis of the cylinder 301, blowing the purging air towards the filtration mechanism to blow off the solid powder adhering to the surface of the filter element 100, so as to prevent the solid powder from clogging the filter element 100 and affecting the filtration efficiency of the filter element 100. The setting of the filter element purging inlet pipe 304a facilitates the maintenance of the filter element 100.

[0051] And a discharge port purge pipe 304b, which is located at the bottom of the cylinder 301, with the part of the discharge port purge pipe 304b extending into the cylinder 301 facing the powder discharge port 303b; during maintenance, the discharge port purge pipe 304b blows towards the powder discharge port 303b, blowing the solid powder accumulated at the powder discharge port 303b out of the cylinder 301, effectively preventing the powder discharge port 303b from becoming blocked.

[0052] Furthermore, refer to Figure 6 When the device is in operation, valve n of feed pipe 303c, valve n of gas discharge port 303a, and valve n of powder discharge port 303b are opened simultaneously; when purging is performed, valve n of feed pipe 303c and valve n of gas discharge port 303a are closed, while valve n of powder discharge port 303b, valve n of filter element purging inlet pipe 304a, and valve n of discharge port purging pipe 304b are opened.

[0053] This utility model, through the setting of the upper bracket 200, can not only fix the position of the filter element 100, but also achieve a flexible connection between the filter element 100 and the bracket 200 through the setting of the flexible connector 103, effectively buffering the mechanical impact on the filter element 100; through the lower bracket 200, the filter element 100 is fixed by the support ring 202 of the lower bracket 200 without the use of the limiting member 102, so that the lower end of the filter element 100 can move up and down along the support ring 202, while the circumferential relative position is fixed, further improving the impact resistance and relative position stability of the filter element 100.

[0054] By selecting the filter material and controlling the process parameters, such as keeping the operating temperature inside the device above 200℃, it is ensured that both trichlorosilane and silicon tetrachloride are in the gas phase, which can effectively separate chlorosilane and silicon powder.

[0055] The filter element can be cleaned without disassembling the device by using the purging component 304.

[0056] The bottom conical end cap structure allows for smoother discharge of solid powder, preventing blockage at the bottom of the device.

[0057] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A filtration mechanism, characterized in that: include, Filter element (100), wherein the filter element (100) is provided with a mounting member (101) at one end; and, The bracket (200) is movably connected to the mounting component (101); The mounting component (101) is provided with a limiting component (102) that restricts its displacement in its moving direction, and a flexible connector (103) is provided between the bracket (200) and the limiting component (102).

2. The filtration mechanism as described in claim 1, characterized in that: The bracket (200) includes a plurality of support rings (202) evenly spaced apart, and adjacent support rings (202) are connected by connecting rods (203); the mounting member (101) passes through the support rings (202) and is movably connected to the bracket (200) in the axial direction.

3. The filtration mechanism as described in claim 2, characterized in that: The number of filter elements (100) corresponds to the number of support rings (202).

4. The filtration mechanism as described in claim 1, characterized in that: The bracket (200) is configured in two sets, which are respectively connected to the mounting parts (101) at both ends of the filter element (100).

5. The filtration mechanism according to any one of claims 1 to 4, characterized in that: The flexible connector (103) is sleeved on the mounting member (101), wherein the flexible connector (103) is configured as a spring.

6. A gas and solid powder separation device having a filtration mechanism as described in any one of claims 1 to 4, characterized in that: include, The device body (300) includes a cylindrical body (301).

7. The gas and solid powder separation device as described in claim 6, characterized in that: The filter mechanism is installed along the axial direction of the cylinder (301) and is fixedly connected to the inner wall of the cylinder (301).

8. The gas and solid powder separation device as described in claim 6 or 7, characterized in that: The main body (300) of the device also includes a material inlet / outlet assembly (303) and a purging assembly (304), which are respectively installed on the cylinder (301).

9. The gas and solid powder separation device as described in claim 8, characterized in that: The material inlet / outlet assembly (303) includes, A feed pipe (303c), located in the middle of the cylinder (301), is used to introduce the material to be separated into the cylinder (301); a gas discharge port (303a), located at the top of the cylinder (301), is used to discharge gas; and, A powder discharge port (303b) is provided on the conical end cap (302) at the bottom of the cylinder (301) for discharging solid powder.

10. The gas and solid powder separation device as described in claim 9, characterized in that: The purging assembly (304) includes, A filter element purge inlet pipe (304a), comprising several groups, is respectively disposed at the top of the cylinder (301). The portion of the filter element purge inlet pipe (304a) extending into the cylinder (301) is parallel to the axis of the cylinder (301); and, A discharge port purge pipe (304b) is provided at the bottom of the cylinder (301), and the portion of the discharge port purge pipe (304b) extending into the cylinder (301) faces the powder discharge port (303b).

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