Filtering device for preparing electronic grade phosphorus oxychloride

Abstract

The utility model discloses a filtering device for preparing electronic grade phosphorus oxychloride, which comprises a filtering device, a plugging assembly and a material conveying assembly, the filtering device comprises a filtering device body, a first filter screen and a second filter screen are arranged in the filtering device body, the first filter screen is arranged above the second filter screen, and the plugging assembly is arranged above the first filter screen. A pair of mounting holes is formed in the right side wall of the filtering device body, and the first filtering net and the second filtering net are mounted in the filtering device body through the pair of mounting holes; the plugging assembly comprises a pair of sliding connection grooves, and the pair of sliding connection grooves are formed in the upper side walls and the lower side walls of the pair of mounting holes. According to the utility model, phosphorus oxychloride is homogenized through the material conveying assembly and then conveyed into the filtering device, and the phosphorus oxychloride is filtered through the filter screen, so that impurities in the phosphorus oxychloride are removed, the impurities entering the distillation kettle are relatively small, the cleaning frequency of the distillation kettle is reduced, and the preparation efficiency of the distillation kettle is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtering devices, and in particular relates to a filtering device for preparing electronic-grade phosphorus oxychloride. Background Art

[0002] Electronic grade phosphorus oxychloride is extremely pure phosphorus oxychloride, which is mainly used in the solar energy industry, integrated circuits, separation devices and optical fiber preforms, etc. It can also be used as a liquid phosphorus source to prepare phosphate esters.

[0003] When industrial phosphorus oxychloride is prepared into electronic grade phosphorus oxychloride, the industrial phosphorus oxychloride in the high-level tank needs to be transported to the distillation kettle through a pipeline, and the impurities in the industrial phosphorus oxychloride need to be removed by the distillation kettle. Since the removed impurities contain solid particles, they are deposited in the distillation kettle and need to be frequently cleaned, which affects the preparation efficiency of the distillation kettle.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a filtering device for preparing electronic-grade phosphorus oxychloride, which can solve the problem that impurities in phosphorus oxychloride affect the preparation efficiency of a distillation kettle.

[0006] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0007] A filtering device for preparing electronic grade phosphorus oxychloride, comprising:

[0008] The filter device comprises a filter device body, wherein a first filter screen and a second filter screen are installed in the filter device body, the first filter screen is installed above the second filter screen, a pair of mounting holes are opened on the right side wall of the filter device body, and the first filter screen and the second filter screen are connected through a pair of mounting holes.

[0009] The installation hole is installed in the filter device body; the first filter screen and the second filter screen are used to filter impurities in phosphorus oxychloride, the aperture of the filter hole on the first filter screen is smaller than the aperture of the filter hole on the second filter screen, the first filter screen is used to filter solid particles with larger particle sizes, and the second filter screen is used to filter fine solid particles.

[0010] The plugging assembly includes a sliding groove, wherein a pair of the sliding grooves are provided, and the pair of the sliding grooves are opened on the upper and lower side walls of the pair of the mounting holes; since the first filter screen and the second filter screen need to be cleaned regularly during use, in order to ensure that the first filter screen and the second filter screen do not affect the normal preparation of the distillation kettle during cleaning, a sliding groove is provided on the mounting hole, and when the first filter screen or the second filter screen is pulled out for cleaning, a plugging plate is installed in the sliding groove to prevent phosphorus oxychloride in the filter device body from leaking through the mounting hole. At the same time, when the first filter screen or the second filter screen is cleaned, the other one that has not been removed can temporarily filter the phosphorus oxychloride, so that the cleaning does not affect the filtration of the raw materials during feeding.

[0011] The material feeding assembly includes a material distributor, the upper side wall of which is fixedly connected to the upper end wall plate of the filter device body, and a plurality of discharge holes are provided on the bottom wall plate of the material distributor. The phosphorus oxychloride in the high-level tank is transported to the material distributor, and after being divided in the material distributor, it is dispersed to the first filter screen through the discharge holes for filtration, thereby improving the filtration efficiency.

[0012] In one or more embodiments of the present invention, a mounting plate is fixedly connected to the side wall on the right side of the first filter screen and the second filter screen, and the mounting plate is used to install the first filter screen and the second filter screen. A sealing gasket is provided on the side of the mounting plate close to the right side wall of the filter device body, and the sealing gasket ensures better sealing between the mounting plate and the filter device body.

[0013] In one or more embodiments of the present invention, a plurality of fixing screws are installed on the mounting plate and the right side wall of the filter device body, and the fixing screws are used to fix the mounting plate to the side wall of the filter device body to ensure the stability of the first filter screen and the second filter screen after installation. At the same time, the fixing screws facilitate the disassembly and assembly of the mounting plate. A handle is fixedly connected to the right side wall of the mounting plate, and the handle is used to facilitate pulling the mounting plate, thereby pulling the first filter screen and the second filter screen out of the filter device body, making it convenient to disassemble and assemble the first filter screen and the second filter screen.

[0014] In one or more embodiments of the present invention, a sealing layer is installed in the mounting hole, and the sealing layer is installed between the inner wall of the mounting hole and the filter screen. The sealing layer ensures that the first filter screen and the second filter screen have good sealing properties with the mounting hole respectively, thereby avoiding leakage of phosphorus oxychloride in the filter device body.

[0015] In one or more embodiments of the present invention, a pair of mounting grooves are fixedly connected to the front and rear side walls of the filter device body, and the first filter screen and the second filter screen are slidably connected to the pair of mounting grooves on the front and rear side walls, respectively. The mounting grooves are used to support the first filter screen and the second filter screen, so that the first filter screen and the second filter screen are stable when installed in the filter device body.

[0016] In one or more embodiments of the present invention, one end of the sliding groove is opened in the front side wall of the filter device body, and the other end of the sliding groove passes through the rear side wall of the filter device body. The end passing through the rear side wall of the filter device body is set as an opening for installing a blocking plate. A sealing plug is mounted on the end of the sliding groove passing through the rear side wall of the filter device body. When the first filter screen and the second filter screen are not removed, one end of the opening needs to be closed by the sealing plug.

[0017] In one or more embodiments of the utility model, the blocking assembly is provided with a blocking plate matching the sliding groove, and the blocking plate is inserted through one end of the sliding groove on the rear side wall of the filter device body during installation. The blocking plate is used to temporarily block the mounting hole, and when the first filter screen or the second filter screen is removed for cleaning, the corresponding mounting hole is blocked by the blocking plate to prevent leakage of phosphorus oxychloride.

[0018] In one or more embodiments of the present invention, the material distributor is configured to be conical, and the diameter of the conical body of the material distributor gradually increases from top to bottom, so that when phosphorus oxychloride enters the material distributor, the pipe diameter increases, causing the instantaneous pressure of phosphorus oxychloride to increase.

[0019] In one or more embodiments of the utility model, a plurality of the discharge holes are arranged in a plurality of rings at the bottom of the material distributor, so that phosphorus oxychloride can be transported in a ring-shaped manner through the discharge holes, and the discharge holes are located on the outer ring and are arranged in an inclined manner from top to bottom in a direction away from the center of the circle, so that the discharge holes transport phosphorus oxychloride to the outside, so as to increase the dispersion area of ​​phosphorus oxychloride.

[0020] Improve the filtering effect.

[0021] In one or more embodiments of the present invention, a feed pipe is installed at the upper end of the material distributor, and the feed pipe transports phosphorus oxychloride into the material distributor. A discharge pipe is installed at the bottom of the filter body, and the phosphorus oxychloride filtered in the filter body is discharged through the discharge pipe.

[0022] Compared with the prior art, the utility model homogenizes phosphorus oxychloride through a feeding component and then conveys it to a filtering device, and filters the phosphorus oxychloride through a filter screen, thereby removing impurities in the phosphorus oxychloride, making the impurities entering the distillation kettle smaller, reducing the frequency of cleaning the distillation kettle, and thus improving the efficiency of preparing the distillation kettle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a three-dimensional diagram of a filtering device for preparing electronic grade phosphorus oxychloride in one embodiment of the utility model;

[0025] Figure 2 This is an exploded view of a filtering device for preparing electronic grade phosphorus oxychloride in one embodiment of the utility model;

[0026] Figure 3 This is a cross-sectional view of a filtering device for preparing electronic grade phosphorus oxychloride in one embodiment of the utility model;

[0027] Figure 4 An exploded view of the sealing plug and the sliding groove in one embodiment of the utility model;

[0028] Figure 5 It is a right side cross-sectional view of a filtering device for preparing electronic grade phosphorus oxychloride in one embodiment of the utility model;

[0029] Figure 6 It is a front cross-sectional view of a filtering device for preparing electronic grade phosphorus oxychloride in one embodiment of the utility model;

[0030] Figure 7 In one embodiment of the utility model Figure 6 Enlarged view of point A in the middle.

[0031] Description of main reference numerals:

[0032] 1-filter device, 11-filter device body, 12-first filter screen, 13-second filter screen, 14-mounting plate, 15-sealing gasket, 16-fixing screw, 17-handle, 18-mounting hole, 19-sealing layer, 110-mounting trough, 2-sealing assembly, 21-sliding groove, 22-sealing plug, 3-feeding assembly, 31-material distributor, 32-discharge hole, 33-feed pipe, 34-discharge pipe. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] like Figure 1 to Figure 6 As shown, a filtering device for preparing electronic-grade phosphorus oxychloride in one embodiment of the utility model includes a filtering device 1, a blocking component 2 and a feeding component 3.

[0035] like Figure 1 to Figure 6 As shown, the filter device 1 includes a filter device body 11, in which a first filter screen 12 and a second filter screen 13 are installed, the first filter screen 12 is installed above the second filter screen 13, the aperture of the filter holes on the first filter screen 12 is smaller than the aperture of the filter holes on the second filter screen 13, and a pair of mounting holes 18 are opened on the right side wall of the filter device body 11, and the first filter screen 12 and the second filter screen 13 are installed in the filter device body 11 through the pair of mounting holes 18; the first filter screen 12 and the second filter screen 13 are used to filter impurities in phosphorus oxychloride; wherein the first filter screen 12 is used to filter solid particles with larger particle sizes, and the second filter screen 13 is used to filter fine solid particles.

[0036] like Figure 2 and Figure 3 As shown, the side walls on the right sides of the first filter screen 12 and the second filter screen 13 are both fixed

[0037] A mounting plate 14 is fixedly connected, and the mounting plate 14 is used to install the first filter screen 12 and the second filter screen 13. A sealing gasket 15 is arranged on one side of the mounting plate 14 close to the right side wall of the filter device body 11. The sealing gasket 15 ensures better sealing between the mounting plate 14 and the filter device body 11.

[0038] like Figure 2 as well as Figure 6 Combination Figure 7As shown, a plurality of fixing screws 16 are installed on the mounting plate 14 and the right side wall of the filter device body 11, and the fixing screws 16 are used to fix the mounting plate 14 to the side wall of the filter device body 11, so as to ensure the stability of the first filter screen 12 and the second filter screen 13 after installation. At the same time, the fixing screws 16 make it easy to disassemble and assemble the mounting plate 14; a handle 17 is fixedly connected to the right side wall of the mounting plate 14, and the handle 17 is used to facilitate pulling the mounting plate 14, so as to extract the first filter screen 12 and the second filter screen 13 from the filter device body 11, so that the first filter screen 12 and the second filter screen 13 are convenient to disassemble and assemble.

[0039] Figure 6 Combination Figure 7 As shown, a sealing layer 19 is installed in the mounting hole 18, and the sealing layer 19 is installed between the inner wall of the mounting hole 18 and the filter screen. The sealing layer 19 ensures that the first filter screen 12 and the second filter screen 13 have good sealing properties with the mounting hole 18 respectively, thereby avoiding leakage of phosphorus oxychloride in the filter device body 11.

[0040] like Figure 5 and Figure 6 As shown, a pair of mounting grooves 110 are fixedly connected to the front and rear side walls of the filter device body 11, and the first filter screen 12 and the second filter screen 13 are respectively slidably connected to the pair of mounting grooves 110 on the front and rear side walls. The mounting grooves 110 are used to support the first filter screen 12 and the second filter screen 13, so that the first filter screen 12 and the second filter screen 13 are stable when installed in the filter device body 11.

[0041] like Figure 4 and Figure 7 As shown, the plugging assembly 2 includes a sliding groove 21, and a pair of sliding grooves 21 are provided. The pair of sliding grooves 21 are opened on the upper and lower side walls of a pair of mounting holes 18; because the first filter screen 12 and the second filter screen 13 need to be cleaned regularly during use, in order to ensure that the cleaning of the first filter screen 12 and the second filter screen 13 does not affect the normal preparation of the distillation kettle, a sliding groove 21 is opened on the mounting hole 18, and when the first filter screen 12 or the second filter screen 13 is pulled out for cleaning, a plugging plate is installed in the sliding groove 21 to prevent the phosphorus oxychloride in the filter device body 11 from leaking through the mounting hole 18. At the same time, when the first filter screen 12 or the second filter screen 13 is cleaned, the other one that has not been removed can be cleaned by the phosphorus oxychloride.

[0042] Perform temporary filtration so that cleaning will not affect the filtration of raw materials during feeding.

[0043] like Figure 4As shown, one end of the sliding groove 21 is opened in the front side wall of the filter device body 11, and the other end of the sliding groove 21 passes through the rear side wall of the filter device body 11. The end passing through the rear side wall of the filter device body 11 is set as an opening for installing a blocking plate. A sealing plug 22 is sleeved on the end of the sliding groove 21 passing through the rear side wall of the filter device body 11. When the first filter screen 12 and the second filter screen 13 are not removed, one end of the opening needs to be closed by the sealing plug 22.

[0044] Secondly, the blocking assembly 2 is provided with a blocking plate matching the sliding groove 21, and the blocking plate is inserted through one end of the sliding groove 21 on the rear side wall of the filter device body 11 during installation. The blocking plate is used to temporarily block the mounting hole 18. When the first filter screen 12 or the second filter screen 13 is removed for cleaning, the corresponding mounting hole 18 is blocked by the blocking plate to prevent leakage of phosphorus oxychloride.

[0045] like Figure 3 , Figure 5 and Figure 6 As shown, the feeding assembly 3 includes a material distributor 31, the upper side wall of the material distributor 31 is fixedly connected to the upper end wall plate of the filter device body 11, and a plurality of discharge holes 32 are provided on the bottom wall plate of the material distributor 31. The phosphorus oxychloride in the high-level tank is transported to the material distributor 31, and after being divided in the material distributor 31, it is dispersed through the discharge holes 32 to the first filter screen 12 for filtration, thereby improving the filtration efficiency.

[0046] like Figure 3 , Figure 5 and Figure 6 As shown, the material distributor 31 is configured to be conical, and the diameter of the conical body of the material distributor 31 gradually increases from top to bottom, so that when phosphorus oxychloride enters the material distributor 31, the pipe diameter increases, so that the instantaneous pressure of phosphorus oxychloride increases, thereby improving the effect of equalizing the flow of phosphorus oxychloride.

[0047] like Figure 3 As shown, a plurality of discharge holes 32 are arranged in a plurality of ring-shaped manners at the bottom of the material distributor 31, so that phosphorus oxychloride can be transported in a ring-shaped manner through the discharge holes 32. The discharge holes 32 are located on the outer ring and are inclined from top to bottom in a direction away from the center of the circle, so that the discharge holes 32 transport phosphorus oxychloride to the outside, so as to increase the dispersion area of ​​phosphorus oxychloride and improve the filtering effect.

[0048] like Figure 1 to Figure 6 As shown, a feed pipe 33 is installed at the upper end of the material distributor 31, and the feed pipe 33 transports phosphorus oxychloride into the material distributor 31. A discharge pipe 34 is installed at the bottom of the filter body 11, and the phosphorus oxychloride filtered in the filter body 11 is discharged through the discharge pipe 34.

[0049] When in use, the phosphorus oxychloride in the high-level tank is transported to the material distributor 31 through the feed pipe 33, and the phosphorus oxychloride is dispersed through the discharge hole 32 in the material distributor 31 and then transported to the filter device body 11, and the phosphorus oxychloride is filtered in turn through the first filter screen 12 and the second filter screen 13. The first filter screen 12 filters larger particles of impurities in the phosphorus oxychloride, and the second filter screen 13 filters fine impurities in the phosphorus oxychloride. The filtered phosphorus oxychloride is transported to the distillation kettle through the discharge pipe 34 for preparation, so that the impurities entering the distillation kettle are smaller, the frequency of cleaning the distillation kettle is reduced, and the preparation efficiency of the distillation kettle is improved.

[0050] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0051] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A filtering device for preparing electronic grade phosphorus oxychloride, characterized in that: include: A filter device body, wherein a first filter screen and a second filter screen are installed in the filter device body, wherein the first filter screen is installed above the second filter screen, and a pair of mounting holes are opened on the right side wall of the filter device body, and the first filter screen and the second filter screen are installed in the filter device body through the pair of mounting holes; The blocking assembly comprises a pair of sliding grooves, wherein the pair of sliding grooves are provided on the upper and lower side walls of the pair of mounting holes; The material delivery component comprises a material distributor, the upper side wall of the material distributor is fixedly connected to the upper end wall plate of the filter device body, and a plurality of discharge holes are opened on the bottom wall plate of the material distributor.

2. A filtering device for preparing electronic grade phosphorus oxychloride according to claim 1, characterized in that: A mounting plate is fixedly connected to the side walls on the right side of the first filter screen and the second filter screen, and a sealing gasket is arranged on one side of the mounting plate close to the right side wall of the filter device body.

3. A filtering device for preparing electronic grade phosphorus oxychloride according to claim 2, characterized in that: A plurality of fixing screws are installed on the mounting plate and the right side wall of the filter device body, and a handle is fixedly connected to the right side wall of the mounting plate.

4. A filtering device for preparing electronic grade phosphorus oxychloride according to claim 1, characterized in that: A sealing layer is installed in the installation hole, and the sealing layer is installed between the inner side wall of the installation hole and the filter screen.

5. The filtering device for preparing electronic grade phosphorus oxychloride according to claim 1, characterized in that: A pair of mounting grooves are fixedly connected to the front and rear side walls of the filter device body, and the first filter screen and the second filter screen are slidably connected to the pair of mounting grooves on the front and rear side walls respectively.

6. The filtering device for preparing electronic grade phosphorus oxychloride according to claim 1, characterized in that: One end of the sliding groove is opened in the front side wall of the filter device body, and the other end of the sliding groove passes through the rear side wall of the filter device body. A sealing plug is sleeved on the end of the sliding groove passing through the rear side wall of the filter device body.

7. A filtering device for preparing electronic grade phosphorus oxychloride according to claim 6, characterized in that: The blocking assembly is provided with a blocking plate matched with the sliding groove. When the blocking plate is installed, it is inserted through one end of the sliding groove on the rear side wall of the filter device body.

8. The filtering device for preparing electronic grade phosphorus oxychloride according to claim 1, characterized in that: The material distributor is configured to be conical, and the diameter of the conical body of the material distributor gradually increases from top to bottom.

9. A filtering device for preparing electronic grade phosphorus oxychloride according to claim 8, characterized in that: The plurality of discharge holes are arranged in a plurality of rings at the bottom of the material distributor, and the discharge holes are located on the outer ring and are inclined from top to bottom in a direction away from the center of the circle.

10. A filtering device for preparing electronic grade phosphorus oxychloride according to claim 9, characterized in that: A feed pipe is installed at the upper end of the material distributor, and a discharge pipe is installed at the bottom of the filter device body.

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