Photovoltaic raw material bottle outlet filtering device

Abstract

The utility model belongs to the field of photovoltaic technology, and discloses a photovoltaic raw material bottle outlet filtering device which comprises a filter body, the inlet end of the filter body is connected with an inlet valve in a sealed mode, the outlet end of the filter body is connected with an outlet valve in a sealed mode, the filter body comprises a shell and a filtering piece, and the interior of the shell is hollow. The filtering part is of a hollow structure and is arranged in the shell, a feeding space is formed between the periphery of the filtering part and the inner wall of the shell, the inlet end is located at one end of the shell and communicates with the feeding space, a discharging space is formed in the filtering part, and the outlet end is located at the other end of the shell and communicates with the discharging space. And raw materials in the feeding space enter the discharging space through the filtering piece. According to the photovoltaic raw material bottle outlet filtering device, the filtering piece is arranged, raw materials are filtered through the filtering piece and then guided into the high-purity diaphragm valve, so that the purity of the raw materials is improved, it is guaranteed that the granularity reaches the standard, and the damage condition of the high-purity diaphragm valve is kept at the normal level.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to an outlet filtering device for a photovoltaic raw material bottle. Background Art

[0002] In the photovoltaic field, trimethylaluminum (TMA) is used for vapor or liquid phase deposition of aluminum oxide passivation films, playing a key role in improving the performance of photovoltaic devices. Furthermore, in semiconductor manufacturing, TMA is used to deposit high-dielectric constant dielectric films, such as aluminum oxide, and serves as an important source of organic metals in the metal-organic chemical vapor deposition (MOCVD) process for the manufacture of aluminum-containing semiconductors.

[0003] During the use of trimethylaluminum, the purchased trimethylaluminum raw materials were of slightly lower purity and the particles exceeded the standard, resulting in the damage to the high-purity diaphragm valve far exceeding the normal level after the raw materials entered the pipeline.

[0004] Therefore, it is urgent to design a new photovoltaic raw material bottle outlet filtering device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a photovoltaic raw material bottle outlet filtering device to solve the technical problem that the purity of trimethylaluminum raw materials is slightly low and the particles exceed the standard, resulting in the damage of the high-purity diaphragm valve far exceeding the normal level after the raw materials enter the pipeline.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The photovoltaic raw material bottle outlet filtering device comprises a filter body, wherein the inlet end of the filter body is sealedly connected to an inlet valve, and the outlet end of the filter body is sealedly connected to an outlet valve. The filter body comprises:

[0008] a housing, wherein the interior of the housing is hollow;

[0009] The filter element is arranged in a hollow structure, and the filter element is arranged in the shell. There is a feed space between the outer periphery of the filter element and the inner wall of the shell. The inlet end is located at one end of the shell and is connected to the feed space. The interior of the filter element has a discharge space, and the outlet end is located at the other end of the shell and is connected to the discharge space. The raw material in the feed space enters the discharge space through the filter element.

[0010] As a preferred solution for the photovoltaic raw material bottle outlet filtering device, the filter element is a cylindrical structure with both ends open and a hollow arrangement, one end of the shell is provided with an outlet porous connector, the outlet porous connector is connected to the outlet valve, one end of the filter element is sleeved on one end of the outlet porous connector, the other end of the filter element is provided with a tightening cap, the other end of the shell is connected to an inlet cover plate connector, and the inlet cover plate connector is connected to the inlet valve.

[0011] As a preferred solution for the photovoltaic raw material bottle outlet filtering device, a support member is provided inside the shell, one end of the support member is connected to one end of the shell, the filter member is sleeved on the circumference of the support member, and the gap between the support member and the filter member is the discharge space.

[0012] As a preferred solution of the photovoltaic raw material bottle outlet filtering device, the end of the support member connected to the shell is provided with a connection hole, and the outlet porous connector includes:

[0013] A connecting pipe, one end of which is installed in the connecting hole, a plurality of first through holes communicating with the interior of the connecting pipe are opened on the circumference of the connecting pipe, a plurality of second through holes are opened on the support member, and the plurality of first through holes and the plurality of second through holes are arranged in a one-to-one correspondence.

[0014] As a preferred solution of the photovoltaic raw material bottle outlet filtering device, the filtering element includes:

[0015] A filter screen, the filter screen being sleeved on the peripheral side of the support member;

[0016] A filter core is located inside the filter screen and sleeved on the peripheral side of the support member.

[0017] As a preferred solution for the photovoltaic raw material bottle outlet filtering device, the compression plug is set in a conical shape, the compression plug is connected to the other end of the support, and the small head end of the compression plug is inserted into one end of the filter.

[0018] As a preferred solution for the photovoltaic raw material bottle outlet filtering device, the tightening cap is sleeved on the other end of the support member, and the support member is threadedly connected to limit the tightening cap against a limiting nut at one end of the filter member.

[0019] As a preferred solution of the photovoltaic raw material bottle outlet filtering device, the inner wall of the shell, the surface of the outlet porous connector, the surface of the inlet cover connector and the surface of the support are selectively provided with a polishing layer.

[0020] As a preferred solution of the photovoltaic raw material bottle outlet filtering device, the inlet valve and the outlet valve are both three-way switching valves;

[0021] One end of the inlet three-way switching valve is the feed end, and the other end is connected to the inlet end of the filter body;

[0022] One end of the outlet three-way switching valve is the discharge end, and the other end is connected to the outlet end of the filter body.

[0023] As a preferred solution for the photovoltaic raw material bottle outlet filtering device, a bypass inspection valve is provided between the inlet three-way switching valve and the outlet three-way switching valve, and the two ends of the bypass inspection valve are respectively connected to the inlet three-way switching valve and the outlet three-way switching valve through pipes.

[0024] Beneficial effects of the utility model:

[0025] The raw material enters the feed space from the inlet end of the shell through the inlet valve, and then enters the discharge space after being filtered by the filter element. The raw material filtered by the filter element is discharged from the inlet valve at the outlet end and then introduced into the high-purity diaphragm valve, thereby improving the purity of the raw material, ensuring that the particle size meets the standard, and maintaining the damage of the high-purity diaphragm valve at a normal level, reducing the frequency of replacement and maintenance, and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a photovoltaic raw material bottle outlet filtering device provided by an embodiment of the present utility model;

[0027] Figure 2 It is along Figure 1 Cross-section along line AA.

[0028] In the picture:

[0029] 100, feeding space; 200, discharging space;

[0030] 1. Filter body; 11. Housing; 12. Filter element; 121. Filter screen; 122. Filter element; 13. Support member; 131. Connecting hole; 132. Second through hole; 133. Limit nut;

[0031] 2. Inlet three-way switching valve;

[0032] 3. Outlet three-way switching valve;

[0033] 4. Outlet porous connector; 41. Connecting pipe; 42. First through hole;

[0034] 5. Inlet cover connector;

[0035] 6. Tighten the plug cap;

[0036] 7. Bypass inspection valve. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0038] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0041] Combine Figure 1 and Figure 2 As shown, this embodiment provides a photovoltaic raw material bottle outlet filtering device. The raw materials in this embodiment are explained using trimethylaluminum as an example. The raw materials referred to in this embodiment are not limited to trimethylaluminum. In other embodiments, other raw materials with substandard purity or particle size can also be filtered, which are not listed one by one here.

[0042] Specifically, the photovoltaic raw material bottle outlet filtering device comprises a filter body 1 , an inlet end of the filter body 1 is sealedly connected to an inlet valve, and an outlet end of the filter body 1 is sealedly connected to an outlet valve.

[0043] Preferably, the inlet valve and outlet valve of this embodiment are both three-way valves, i.e., the inlet three-way switching valve 2 and the outlet three-way switching valve 3. One end of the inlet three-way switching valve 2 is the feed end, and the other end is connected to the inlet end of the filter body 1. One end of the outlet three-way switching valve 3 is the discharge end, and the other end is connected to the outlet end of the filter body 1. In addition, the inlet three-way switching valve 2 and the outlet three-way switching valve 3 are pneumatic valves, and thus can achieve automated switching operation through the air pipe, solenoid valve and PLC. Since this switching operation process is existing technology, it will not be described in detail in this embodiment.

[0044] In this embodiment, a bypass inspection valve 7 is provided between the remaining port of the inlet three-way switching valve 2 and the outlet three-way switching valve 3. The two ends of the bypass inspection valve 7 are connected to the inlet three-way switching valve 2 and the outlet three-way switching valve 3 respectively through pipes. Thus, two pipelines are formed between the inlet three-way switching valve 2 and the outlet three-way switching valve 3. When the raw materials meet the standards, the inlet three-way switching valve 2 and the outlet three-way switching valve 3 are switched to connect to the bypass inspection valve 7. When the raw materials do not meet the standards, the inlet three-way switching valve 2 and the outlet three-way switching valve 3 are switched to connect to the filter body 1 to filter the raw materials. On the one hand, the provision of the bypass inspection valve 7 facilitates the replacement and maintenance of the filter body 1 and does not hinder the normal introduction of raw materials. On the other hand, when the raw materials meet the standards, they can be directly introduced, improving production efficiency. Only when they do not meet the standards do they need to enter the filter body 1 for filtration, which improves adaptability.

[0045] like Figure 2 As shown, the filter body 1 of this embodiment includes a shell 11 and a filter element 12. The interior of the shell 11 is hollow, and the filter element 12 is hollow. The filter element 12 is arranged in the shell 11. There is a feed space 100 between the outer periphery of the filter element 12 and the inner wall of the shell 11. The inlet end is located at one end of the shell 11 and is connected to the feed space 100. The interior of the filter element 12 has a discharge space 200, and the outlet end is located at the other end of the shell 11 and is connected to the discharge space 200. The raw material in the feed space 100 enters the discharge space 200 through the filter element 12.

[0046] It can be understood that the raw material enters the feed space 100 from the inlet end of the shell 11 through the inlet valve, and then enters the discharge space 200 through the filtered raw material of the filter element 12. The raw material filtered by the filter element 12 is discharged from the inlet valve at the outlet end and then introduced into the high-purity diaphragm valve, thereby improving the purity of the raw material, ensuring that the particle size meets the standard, and maintaining the damage of the high-purity diaphragm valve at a normal level, reducing the frequency of replacement and maintenance, and increasing its service life.

[0047] Specifically, if Figure 2 As shown, the filter element 12 is a cylindrical structure with both ends open and a hollow arrangement. One end of the shell 11 is provided with an outlet porous connector 4, and the outlet porous connector 4 is connected to the outlet three-way switching valve 3. One end of the filter element 12 is sleeved on one end of the outlet porous connector 4, and the other end of the filter element 12 is provided with a tightening plug 6. The other end of the shell 11 is connected to the inlet cover plate connector 5, and the inlet cover plate connector 5 is connected to the inlet three-way switching valve 2.

[0048] More specifically, the housing 11 is cylindrical in structure, and a support member 13 is disposed within the housing 11. One end of the support member 13 is connected to the closed end of the housing 11. Preferably, the support member 13 is a support rod, one end of which is connected to the closed end of the housing 11, and the two are integrally formed, providing good integrity. The filter element 12 is a cylindrical structure with open ends and a hollow center. The filter element 12 is sleeved around the support rod, and the gap between the support rod and the filter element 12 constitutes the aforementioned discharge space 200.

[0049] The support rod has a connecting hole 131 at one end connected to the housing 11. In this embodiment, the connecting hole 131 is preferably a threaded hole. The outlet porous connector 4 includes a connecting pipe 41. One end of the connecting pipe 41 is closed, and the other end is open and connected to the outlet three-way switching valve 3. The closed end of the connecting pipe 41 is threaded into the connecting hole 131. The connecting pipe 41 is provided with a plurality of first through holes 42 communicating with the interior thereof on its circumference. The inner wall of the connecting hole 131 of the support rod has a plurality of second through holes 132, and the plurality of first through holes 42 and the plurality of second through holes 132 are provided in a one-to-one correspondence. The connecting pipe 41 is installed into the connecting hole 131 by screwing it forward or backward, thereby achieving installation and removal of the connecting pipe 41 from the filter body 1. The structure is simple and installation and removal are convenient.

[0050] In this embodiment, the compression plug cap 6 is conical in shape and connected to the other end of the support rod. The small end of the compression plug cap 6 is inserted into one end of the filter element 12. Specifically, a through-hole is provided in the axial direction of the compression plug cap 6. The compression plug cap 6 is sleeved on the circumference of the support rod through the through-hole, and the small end is inserted into the filter element 12. A limit nut 133 is threadedly connected to the support rod. One side of the limit nut 133 presses against the large end of the compression plug cap 6, so that the small end of the compression plug cap 6 is pressed against the filter element 12, thereby completing the installation of the filter element 12.

[0051] The filter element 12 of this embodiment includes a filter screen 121 and a filter core 122. The filter screen 121 is sleeved around the support member 13, and the filter core 122 is located inside the filter screen 121 and sleeved around the support member 13. The filter screen 121, as a fiber filter core 122, can play a certain supporting role in the overall shape of the filter element 12.

[0052] Preferably, the inner wall of the shell 11, the surface of the outlet porous connector 4, the surface of the inlet cover connector 5 and the surface of the support 13 are selectively provided with a polishing layer, that is, all surfaces of the photovoltaic raw material bottle outlet filter device that are in contact with the raw materials are electrochemically polished, Ra≤0.25um, and strictly ensured to be grease-free, so that the photovoltaic raw material bottle outlet filter device can be used in the fields of high-purity gas transportation, liquid vaporization, solid sublimation, etc.

[0053] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Photovoltaic raw material bottle outlet filtering device, characterized in that: The filter body (1) comprises a filter body (1), wherein the inlet end of the filter body (1) is sealedly connected to an inlet valve, and the outlet end of the filter body (1) is sealedly connected to an outlet valve. The filter body (1) comprises: A housing (11), wherein the interior of the housing (11) is hollow; A filter element (12) is provided in a hollow structure, the filter element (12) is provided in the shell (11), a feed space (100) is provided between the outer periphery of the filter element (12) and the inner wall of the shell (11), the inlet end is located at one end of the shell (11) and is connected to the feed space (100), the interior of the filter element (12) is provided with a discharge space (200), the outlet end is located at the other end of the shell (11) and is connected to the discharge space (200), and the raw material in the feed space (100) enters the discharge space (200) through the filter element (12).

2. The photovoltaic raw material bottle outlet filtering device according to claim 1, characterized in that: The filter element (12) is a cylindrical structure with both ends open and a hollow structure. One end of the shell (11) is provided with an outlet porous connector (4), and the outlet porous connector (4) is connected to the outlet valve. One end of the filter element (12) is sleeved on one end of the outlet porous connector (4), and the other end of the filter element (12) is provided with a compression cap (6). The other end of the shell (11) is connected to an inlet cover plate connector (5), and the inlet cover plate connector (5) is connected to the inlet valve.

3. The photovoltaic raw material bottle outlet filtering device according to claim 2, characterized in that: A support member (13) is provided inside the shell (11), one end of the support member (13) is connected to one end of the shell (11), the filter member (12) is sleeved on the circumference of the support member (13), and the gap between the support member (13) and the filter member (12) is the discharge space (200).

4. The photovoltaic raw material bottle outlet filtering device according to claim 3, characterized in that: One end of the support member (13) connected to the housing (11) is provided with a connection hole (131), and the outlet porous connector (4) comprises: A connecting pipe (41), one end of which is installed in the connecting hole (131), a plurality of first through holes (42) communicating with the interior of the connecting pipe (41) are provided on the peripheral side of the connecting pipe (41), a plurality of second through holes (132) are provided on the supporting member (13), and the plurality of first through holes (42) and the plurality of second through holes (132) are provided in a one-to-one correspondence.

5. The photovoltaic raw material bottle outlet filtering device according to claim 3, characterized in that: The filter element (12) comprises: A filter screen (121), the filter screen (121) being sleeved on a circumferential side of the support member (13); A filter element (122), the filter element (122) is located inside the filter screen (121) and is sleeved on the circumference of the support member (13).

6. The photovoltaic raw material bottle outlet filtering device according to claim 3, characterized in that: The compression plugging cap (6) is arranged in a conical shape, the compression plugging cap (6) is connected to the other end of the support member (13), and the small end of the compression plugging cap (6) is inserted into one end of the filter member (12).

7. The photovoltaic raw material bottle outlet filtering device according to claim 6, characterized in that: The compression plugging cap (6) is sleeved on the other end of the support member (13), and the support member (13) is threadedly connected to a limiting nut (133) that limits the compression plugging cap (6) to press against one end of the filter member (12).

8. The photovoltaic raw material bottle outlet filtering device according to claim 3, characterized in that: The inner wall of the housing (11), the surface of the outlet porous connector (4), the surface of the inlet cover plate connector (5), and the surface of the support member (13) are selectively provided with a polishing layer.

9. The photovoltaic raw material bottle outlet filtering device according to any one of claims 1 to 8, characterized in that: The inlet valve and the outlet valve are both three-way switching valves; One end of the inlet three-way switching valve (2) is the feed end, and the other end is connected to the inlet end of the filter body (1); One end of the outlet three-way switching valve (3) is a discharge end, and the other end is connected to the outlet end of the filter body (1).

10. The photovoltaic raw material bottle outlet filtering device according to claim 9, characterized in that: A bypass inspection valve (7) is provided between the inlet three-way switching valve (2) and the outlet three-way switching valve (3), and both ends of the bypass inspection valve (7) are respectively connected to the inlet three-way switching valve (2) and the outlet three-way switching valve (3) through pipelines.

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