Air filtering device and PCB drying equipment

Abstract

The utility model relates to the technical field of PCB drying equipment, in particular to an air filtering device and PCB drying equipment. The air filtering device comprises a shell, a first sealing ring and a filtering unit. The shell comprises a first shell body and a second shell body, the first shell body comprises a first surrounding part and a first connecting part, the first surrounding part forms an air inlet, and the first connecting part is arranged at the end, facing the second shell body, of the first surrounding part in a protruding mode. The second shell comprises a second surrounding part and a second connecting part, the second surrounding part forms an air outlet, the second connecting part is arranged at the end, facing the first shell, of the second surrounding part in a protruding mode, the first sealing ring is connected between the first connecting part and the second connecting part in a sealed mode, and the filtering unit is arranged in the shell. The first sealing ring is connected between the first shell and the second shell in a sealed mode, it is guaranteed that the shells have good sealing performance, leakage can be avoided when high-temperature and high-pressure gas is filtered, the air pressure in the air filtering device is kept stable, and the good filtering effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board drying equipment, in particular to an air filtering device and PCB board drying equipment. Background Art

[0002] In the PCB production process, the last step of wet processing is drying the PCB. PCB drying equipment usually consists of a fan, a heating device, an air knife, etc. The fan provides pressurized air, the air is heated by the heating device, and then blown out by the air knife to dry the PCB board surface. Since the PCB product has a high requirement for cleanliness, there must be no dust particles on the surface of the circuit board after drying, so the air filter device is also very important in the PCB drying equipment.

[0003] At present, the air filter commonly used in PCB drying equipment includes an aluminum alloy profile shell, an aluminum foil partition and filter paper. Usually, the aluminum alloy profile shell is riveted by rivets and sealed by glue. When the air filter of this structure works under high temperature and high pressure environment, because its shell is formed by riveting the aluminum alloy profile shell, air leakage often occurs, resulting in a decrease in air pressure in the air filter, affecting the air flow speed and thus affecting the filtration efficiency.

[0004] Therefore, an air filtering device and a PCB board drying device are urgently needed to solve the above problems. Utility Model Content

[0005] According to one aspect of the utility model: an air filter device is provided, which can prevent air leakage during filtering, ensure the stability of the air pressure in the air filter device, and improve the filtering efficiency.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An air filtering device is provided, comprising:

[0008] The housing comprises a first shell and a second shell, the first shell comprises a first surrounding portion and a first connecting portion, the first surrounding portion forms an air inlet, the first connecting portion is protrudingly arranged at one end of the first surrounding portion facing the second shell, the second shell comprises a second surrounding portion and a second connecting portion, the second surrounding portion forms an air outlet, and the second connecting portion is protrudingly arranged at one end of the second surrounding portion facing the first shell;

[0009] a first sealing ring, wherein the first sealing ring is sealingly connected between the first connecting portion and the second connecting portion;

[0010] A filter unit is disposed in the housing.

[0011] As an optional solution for the air filtering device, the filter unit includes a partition and a filter element, a plurality of the partitions are stacked in a first direction, and an insertion space is formed between two adjacent partitions. The filter element includes a folded filter plate, and the filter plate includes a plurality of plug-in parts perpendicular to the first direction. The plurality of plug-in parts are plugged into the plurality of plug-in spaces one by one.

[0012] As an optional solution of the air filtering device, the partition includes a partition body and a frame, and the frame is arranged on both sides of the partition body in the second direction for supporting the partition body.

[0013] As an optional solution of the air filtering device, the partition further includes a supporting portion, which is arranged on the partition body and is used to support the filter element.

[0014] As an optional solution for the air filtering device, a first mounting groove is formed on a surface of the first connecting portion facing the second shell, and the first sealing ring is installed in the first mounting groove; and / or a second mounting groove is formed on a surface of the second connecting portion facing the first shell, and the first sealing ring is installed in the second mounting groove.

[0015] As an optional solution for the air filtering device, the first shell includes a first reinforcing rib, which is connected between the first surrounding portion and the first connecting portion; and / or the second shell includes a second reinforcing rib, which is connected between the second surrounding portion and the second connecting portion.

[0016] As an optional solution of the air filtering device, a plurality of the first reinforcing ribs are evenly distributed around the circumference of the first surrounding portion.

[0017] As an optional solution of the air filtering device, a plurality of the second reinforcing ribs are evenly distributed around the circumference of the second surrounding portion.

[0018] As an optional solution for the air filtering device, the air filtering device also includes a second sealing ring, which is sealed to the end of the air inlet side wall, and / or the air filtering device also includes a third sealing ring, which is sealed to the end of the air outlet side wall.

[0019] According to another aspect of the utility model, a PCB board drying device is provided, comprising the above-mentioned air filtering device.

[0020] Beneficial effects of the utility model:

[0021] The utility model provides an air filtering device, comprising an outer shell, a first sealing ring and a filter unit, wherein the filter unit is arranged in the outer shell, and the outer shell comprises a first shell body and a second shell body, the first shell body is provided with an air inlet, and the second shell body is provided with an air outlet, high-temperature and high-pressure gas enters the air filtering device through the air inlet, is filtered through the filter unit, and finally flows out through the air outlet, and the first sealing ring is sealingly connected between the first shell body and the second shell body to ensure that the outer shell has good sealing performance, and can avoid leakage of high-temperature and high-pressure gas when passing through the air filtering device, so that the air pressure in the air filtering device remains stable, and a good filtering effect is achieved.

[0022] The utility model also provides a PCB board drying device, including the above-mentioned air filter device, and the air filter device has good sealing performance, can prevent air leakage, has a simple shell structure and high strength, is easy to disassemble, is convenient for regular replacement of the filter element, saves costs, and is not easy to deform and break. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an exploded view of the air filter device provided by the embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of a partition of an air filter device provided in an embodiment of the utility model.

[0025] In the figure:

[0026] 1. first shell; 11. first surrounding portion; 12. first connecting portion; 13. air inlet; 131. first reinforcing rod; 14. first reinforcing rib;

[0027] 2. second housing; 21. second surrounding portion; 22. second connecting portion; 23. air outlet; 231. second reinforcing rod; 24. second reinforcing rib;

[0028] 3. The first sealing ring;

[0029] 4. partition; 41. partition body; 42. frame; 421. clamping structure; 43. support part; 44. through hole;

[0030] 5. Filter element; 6. Connecting piece; 7. Second sealing ring; 8. Third sealing ring. DETAILED DESCRIPTION

[0031] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and implementation methods. It is understood that the specific embodiments described herein are only used to explain the utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings, rather than all.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] like Figure 1 As shown, the air filter device provided in this embodiment includes a housing, a first sealing ring 3 and a filter unit. The housing includes a first shell 1 and a second shell 2, the first shell 1 includes a first enclosing portion 11 and a first connecting portion 12, the first enclosing portion 11 forms an air inlet 13, and the first connecting portion 12 is protruded from one end of the first enclosing portion 11 facing the second shell 2. The second shell 2 includes a second enclosing portion 21 and a second connecting portion 22, the second enclosing portion 21 forms an air outlet 23, and the second connecting portion 22 is protruded from one end of the second enclosing portion 21 facing the first shell 1. The first sealing ring 3 is sealingly connected between the first connecting portion 12 and the second connecting portion 22 to prevent high-temperature and high-pressure gas from leaking from the connection between the first shell 1 and the second shell 2. The filter unit is arranged in the housing for filtering the high-temperature and high-pressure gas passing through the air filter device.

[0035] The utility model provides an air filter device, comprising a housing, a first sealing ring 3 and a filter unit, wherein the housing comprises a first shell 1 and a second shell 2, the first sealing ring 3 is sealed and connected between the first shell 1 and the second shell 2, the filter unit is arranged in the housing, the first shell 1 is provided with an air inlet 13, the second shell 2 is provided with an air outlet 23, and high-temperature and high-pressure gas enters the air filter device through the air inlet 13, is filtered by the filter unit, and finally flows out from the air outlet 23. The air filter device improves the sealing performance of the housing by arranging the first sealing ring 3 between the first shell 1 and the second shell 2, prevents gas from leaking from the housing, keeps the air pressure in the air filter device stable, saves costs, and achieves a good filtering effect.

[0036] Further, the air filter device further includes a connector 6, which is connected to the first connector 12 and the second connector 22. Specifically, the first connector 12 is circumferentially provided with a first connecting hole 121, and the second connector 22 is circumferentially provided with a second connecting hole 221, the first connecting hole 121 and the second connecting hole 221 are correspondingly provided, and the connector 6 is passed through the first connecting hole 121 and the second connecting hole 221 for connection. In some embodiments, the connector 6 can be a bolt and nut, which is convenient for regular disassembly of the first housing 1 and the second housing 2 to clean and replace the filter element 5.

[0037] In order to improve the stability of the sealing structure, a first mounting groove is formed on the side of the first connecting portion 12 facing the second shell 2, and the first sealing ring 3 is installed in the first mounting groove. Alternatively, a second mounting groove is formed on the side of the second connecting portion 22 facing the first shell 1, and the first sealing ring 3 is installed in the second mounting groove. Of course, while the first mounting groove is provided on the first connecting portion 12, a second mounting groove may also be provided on the second connecting portion 22. Such a setting can also better position the first sealing ring 3 and facilitate installation.

[0038] It should be noted that the second sealing ring 7 can be connected to the end of the side wall of the air inlet 13, and the third sealing ring 8 can be set at the end of the side wall of the air outlet 23 to reduce the outflow of high-temperature and high-pressure gas, improve the sealing performance of the air filter device during air inlet and outlet, and save production costs. Of course, the air filter device can be set with only one of the second sealing ring 7 or the third sealing ring 8, or both, which is not limited in this embodiment.

[0039] Continue to refer to Figure 1 In this embodiment, the housing is a square housing, which is convenient for fixed installation of the housing. In order to increase the air intake and air outlet of the air filter device, the first housing 1 and the second housing 2 are set as a square frame structure to maximize the cross-section of the air inlet 13 and the air outlet 23. In order to ensure the structural strength of the housing, a first reinforcing rod 131 is set in the air inlet 13, and multiple first reinforcing rods 131 are arranged at intervals; a second reinforcing rod 231 is set in the air outlet 23, and multiple second reinforcing rods 231 are arranged at intervals, so that the housing is more solid.

[0040] Furthermore, the first shell 1 includes a first reinforcing rib 14, which is connected between the first surrounding portion 11 and the first connecting portion 12, or the second shell 2 includes a second reinforcing rib 24, which is connected between the second surrounding portion 21 and the second connecting portion 22. Of course, while the first reinforcing rib 14 is provided between the first surrounding portion 11 and the first connecting portion 12, the second reinforcing rib 24 can also be provided between the second surrounding portion 21 and the second connecting portion 22. As a preferred embodiment, a plurality of first reinforcing ribs 14 are evenly distributed around the first surrounding portion 11, and a plurality of second reinforcing ribs 24 are evenly distributed around the second surrounding portion 21. Such a configuration can further improve the structural strength of the outer shell and prevent the outer shell from being deformed or even ruptured under the impact of high-temperature and high-pressure gas.

[0041] In this embodiment, the shell can be set as a plastic part, which has the characteristics of high strength, high temperature resistance, wear resistance, etc. Available engineering plastics include acrylonitrile butadiene styrene (ABS) plastic, polycarbonate (PC) plastic, polyethylene (PE) plastic, etc. Setting the shell as an engineering plastic part can be integrally formed during production and manufacturing, reducing manufacturing costs, and can also ensure the structural strength of the shell, preventing the shell from being stretched, deformed, or even broken by high-temperature and high-pressure gas.

[0042] Furthermore, the filter unit includes a partition 4 and a filter element 5, wherein a plurality of partitions 4 are stacked in a first direction, and a plug-in space is formed between two adjacent partitions 4, and the filter element 5 includes a folded filter disc, and the filter disc includes a plurality of plug-in portions perpendicular to the first direction, and the plurality of plug-in portions are plugged into the plurality of plug-in spaces one by one. Such a configuration can expand the use area of ​​the filter element 5 and enable multi-layer filtration of the air. Specifically, the filter element 5 can use filter cloth, filter cotton or filter net, etc. In this embodiment, the filter element 5 is an integrated structure, and is folded and alternately arranged with the multi-layer partitions 4, so that the filter element 5 can be taken out at one time when it is replaced, thereby improving the efficiency of replacing the filter element 5 and saving time.

[0043] like Figure 2As shown, the partition 4 includes a partition body 41 and a frame 42. The frame 42 is arranged on both sides of the partition body 41 in the second direction, and is used to support the partition body 41, so that a filtering space capable of passing the filter element 5 is formed between the stacked partitions 4. Support portions 43 are arranged above and below the partition body 41 in the first direction, and a plurality of support portions 43 are arranged at intervals in the second direction, and the support portions 43 are used to support and fix the filter element 5. Specifically, the support portions 43 located above the partition body 41 and the support portions 43 below are arranged alternately, which is beneficial to the stability of the partitions 4 when they are stacked. In the present embodiment, the support portion 43 is a long strip boss structure. In some other embodiments, the support portion 43 may also be a cylindrical boss structure, etc.

[0044] Furthermore, through holes 44 are provided on the partition body 41 to increase the air permeability of the partition body 41 and reduce the weight of the partition 4, making the partition 4 lighter. In some embodiments, the through holes 44 are long holes, and a plurality of through holes 44 are evenly distributed on the partition body 41. In some other embodiments, the through holes 44 can also be set as circular holes, and their arrangement can also be concentric circles or spiral arrangements. Specifically, in the present embodiment, the through holes 44 are arranged in multiple rows in the third direction, and the through holes 44 in two adjacent rows are staggered, and the through holes 44 are arranged at the connection between the support portion 43 and the partition body 41 to prevent the partition body 41 at the edge of the through holes 44 from being deformed or broken, thereby ensuring the structural strength of the partition 4.

[0045] Furthermore, the frame 42 is provided with a clamping structure 421 to facilitate the movement of the partition 4. In some embodiments, the clamping structure 421 is convexly provided on a side of the frame 42 away from the partition body 41, and the clamping structure 421 can be provided as a boss structure, such as a trapezoidal boss structure, a rectangular boss structure, or a cylindrical boss structure. In some other embodiments, the clamping structure 421 can also be formed by providing a clamping hole on the frame 42.

[0046] It should be noted that the air filter device proposed in the utility model can also be applied to other scenarios where gas needs to be filtered, and has good applicability.

[0047] The utility model also provides a PCB drying device, including the above-mentioned air filtering device. The PCB drying device has good filtering and sealing performance and can prevent air leakage during operation; the structure is simple and easy to disassemble, and the filter element 5 is easy to replace regularly, saving costs; the filtering device has high structural strength and is not easy to deform or break.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An air filter device, characterized in that: include: A shell, the shell comprising a first shell (1) and a second shell (2) which are detachably connected, the first shell (1) comprising a first surrounding portion (11) and a first connecting portion (12), the first surrounding portion (11) forming an air inlet (13), the first connecting portion (12) being protruding from one end of the first surrounding portion (11) facing the second shell (2), the second shell (2) comprising a second surrounding portion (21) and a second connecting portion (22), the second surrounding portion (21) forming an air outlet (23), the second connecting portion (22) being protruding from one end of the second surrounding portion (21) facing the first shell (1); A first sealing ring (3), the first sealing ring (3) being sealingly connected between the first connecting portion (12) and the second connecting portion (22); A filter unit is disposed in the housing.

2. The air filter device according to claim 1, characterized in that: The filter unit comprises a partition (4) and a filter element (5), wherein a plurality of the partitions (4) are stacked in a first direction, and an insertion space is formed between two adjacent partitions (4); the filter element (5) comprises a folded filter plate, wherein the filter plate comprises a plurality of insertion portions perpendicular to the first direction, and the plurality of insertion portions are inserted into the plurality of insertion spaces one by one.

3. The air filter device according to claim 2, characterized in that: The partition (4) comprises a partition body (41) and a frame (42); the frame (42) is arranged on both sides of the partition body (41) in the second direction and is used to support the partition body (41).

4. The air filter device according to claim 3, characterized in that: The partition plate (4) further comprises a supporting portion (43), wherein the supporting portion (43) is arranged on the partition plate body (41), and the supporting portion (43) is used to support the filter element (5).

5. The air filter device according to claim 1, characterized in that: A first installation groove is formed on a surface of the first connecting portion (12) facing the second shell (2), and the first sealing ring (3) is installed in the first installation groove; And / or, a second installation groove is formed on a side of the second connecting portion (22) facing the first housing (1), and the first sealing ring (3) is installed in the second installation groove.

6. The air filter device according to claim 1, characterized in that: The first shell (1) comprises a first reinforcing rib (14), wherein the first reinforcing rib (14) is connected between the first surrounding portion (11) and the first connecting portion (12); And / or, the second shell (2) comprises a second reinforcing rib (24), and the second reinforcing rib (24) is connected between the second surrounding portion (21) and the second connecting portion (22).

7. The air filter device according to claim 6, characterized in that: A plurality of the first reinforcing ribs (14) are evenly distributed in the circumferential direction of the first surrounding portion (11).

8. The air filter device according to claim 6, characterized in that: A plurality of the second reinforcing ribs (24) are evenly distributed in the circumferential direction of the second surrounding portion (21).

9. The air filter device according to claim 1, characterized in that: The air filter device further comprises a second sealing ring (7), wherein the second sealing ring (7) is sealingly connected to an end portion forming a side wall of the air inlet (13); And / or, the air filtering device further comprises a third sealing ring (8), wherein the third sealing ring (8) is sealingly connected to the end portion forming the side wall of the air outlet (23). 10.PCB board drying equipment, characterized in that: An air filter device comprising any one of claims 1 to 9.

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