Multi-filter-screen fixing structure of cleanliness detection device

Abstract

The utility model relates to the technical field of cleanliness detection, in particular to a multi-filter-screen fixing structure of a cleanliness detection device, which comprises a fixing structure main body, a positioning seat is arranged on the fixing structure main body, the positioning seat is of a cylindrical structure, and an exhaust pipe connector and an air inlet pipe connector are respectively arranged on the side face and one end of the positioning seat. A fastening cover is arranged at the other end of the positioning seat, a filter screen positioning barrel of a cylindrical structure is arranged in the positioning seat, one end of the filter screen positioning barrel is of an opening structure, a through hole structure is also arranged on the side face of the filter screen positioning barrel, and multiple layers of filter screens are arranged in the filter screen positioning barrel; a clamping seat and a handle which are of an integrated structure are arranged on the inner side and the outer side of the fastening cover respectively, and a groove which is fastened and clamped with the filter screen positioning cylinder is formed in the clamping seat. According to the multi-filter-screen fixing structure of the cleanliness detection device, the multiple layers of filter screens can be stably positioned, the multiple layers of filter screens are convenient to disassemble and assemble, and collection treatment after sample collection is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of cleanliness detection, in particular to a multi-filter screen fixing structure of a cleanliness detection device. Background Art

[0002] Cleanliness testing is a process that evaluates the degree of contamination on a surface or in a fluid, which is critical to ensuring product reliability and performance. Cleanliness testing can help industrial production identify and quantify potential contaminants such as dust, metal fragments, fibers, chemical residues, etc., which may cause functional failure, accelerated wear or product contamination.

[0003] When performing sample collection and processing, the existing cleanliness detection device intercepts particulate pollutants by filtering. The sample collection device used for the cleanliness detection device positions the filter screen by a fixed structure, such as the filter screen fixing structure disclosed in publication number CN112337160A, which positions the filter screen by a frame structure composed of a hoop. However, the filter screen positioned in this way is inconvenient to disassemble and assemble, which affects the collection and processing of samples after collection. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-filter fixing structure for a cleanliness detection device to solve the problem that the multi-filter fixing structure for cleanliness detection devices on the market currently has the problem of inconvenience in disassembly and assembly of the filters when in use, thus affecting the collection and processing of samples after collection.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-filter fixing structure of a cleanliness detection device, comprising a fixing structure main body, a positioning seat is provided on the fixing structure main body, and the positioning seat is a cylindrical structure, and the side and one end of the positioning seat are respectively provided with an exhaust pipe connection port and an intake pipe connection port, a fastening cover is provided at the other end of the positioning seat, and a filter positioning cylinder of a cylindrical structure is provided in the positioning seat, one end of the filter positioning cylinder is an open structure, and the side of the filter positioning cylinder is also provided with a through hole structure, and multiple layers of filters are provided inside the filter positioning cylinder, and a clamping seat and a handle of an integrated structure are respectively provided inside and outside the fastening cover, and a groove for fastening and clamping with the filter positioning cylinder is provided on the clamping seat, and the side of the clamping seat is threadedly fastened to the positioning seat.

[0006] Preferably, the inner ring of the opening end of the positioning seat is further provided with a circle of grooves, and a sealing gasket is fastened and clamped in the inner ring groove of the positioning seat, and the sealing gasket is in close contact with the fastening cover.

[0007] Preferably, one end of the inner wall of the positioning seat close to the air inlet pipe connection port is evenly spaced with limiting protrusions of an integral structure, and a support plate is movably connected to the positioning seat through the limiting protrusions.

[0008] Preferably, the support plate is in close contact with the open end of the filter positioning cylinder, and a through hole corresponding to the position of the air inlet pipe connection port is opened in the middle of the support plate.

[0009] Preferably, an air guide ring and a support seat of an integral structure are respectively provided at both ends of the support plate, and both the air guide ring and the support seat are circular ring structures, and the air guide ring is inserted into the open end of the filter positioning cylinder.

[0010] Preferably, a spring is sleeved on the outside of the support seat, and both the support seat and the spring are in contact with and cooperate with the positioning seat.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the multi-filter fixing structure of the cleanliness detection device can stably position the multi-layer filter screens, and make the multi-layer filter screens easy to disassemble and assemble, and easy to collect and process after sample collection. The multi-filter fixing structure of the cleanliness detection device sets the exhaust pipe connection port and the intake pipe connection port on the positioning seat, and stably supports the filter positioning cylinder used for fixing the multi-layer filter screens through the support plate, and then closes it with the fastening cover, which can improve the convenience of disassembling and assembling the multi-layer filter screens. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the internal structure of a multi-filter fixing structure of a cleanliness detection device of the utility model;

[0013] Figure 2 This is a schematic diagram of the assembly structure of a multi-filter fixing structure of a cleanliness detection device of the utility model;

[0014] Figure 3 It is a schematic diagram of the connection structure between the support plate and the positioning seat of a multi-filter fixing structure of a cleanliness detection device of the utility model;

[0015] Figure 4 This is a schematic diagram of a limit protrusion structure arranged in a positioning seat of a multi-filter fixing structure of a cleanliness detection device of the utility model;

[0016] Figure 5 It is a schematic diagram of the connection structure between the fastening cover and the clamping seat of a multi-filter fixing structure of a cleanliness detection device of the utility model;

[0017] Figure 6 It is a top view of the connection between the multi-layer filter screens and the filter screen positioning cylinder of the multi-filter screen fixing structure of the cleanliness detection device of the utility model.

[0018] In the figure: 1. Fixed structure body; 2. Sealing gasket; 3. Fastening cover; 301. Cardan seat; 302. Handle; 4. Spring; 5. Positioning seat; 501. Exhaust pipe connection port; 502. Limiting protrusion; 503. Inlet pipe connection port; 6. Support plate; 601. Air guide ring; 602. Support seat; 7. Multi-layer filter; 8. Filter positioning cylinder. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-6The utility model provides a technical solution: a multi-filter fixing structure of a cleanliness detection device, including a fixing structure body 1, a positioning seat 5 is provided on the fixing structure body 1, and the positioning seat 5 is a cylindrical structure, and the side surface and one end of the positioning seat 5 are respectively provided with an exhaust pipe connection port 501 and an intake pipe connection port 503, and the inner wall of the positioning seat 5 is close to the intake pipe connection port 503. The end is evenly spaced with an integral structure of limiting protrusions 502, and the positioning seat 5 is movably connected with a support plate 6 through the limiting protrusion 502. This structure can interactively limit the support plate 6 through the limiting protrusion 502, so that the support plate 6 can be linearly moved in the positioning seat 5, and the other end of the positioning seat 5 is provided with a fastening cover 3, and the inner circle of the opening end of the positioning seat 5 is also provided with a The inner groove of the positioning seat 5 is fastened with a sealing gasket 2, and the sealing gasket 2 is in close contact with the fastening cover 3. This structure allows the port portion of the positioning seat 5 used to fix the multi-layer filter 7 to be sealed and leak-proof through the sealing gasket 2, so that the fastening cover 3 is tightly fixed relative to the positioning seat 5, ensuring the sealed communication between the intake pipe connecting port 503 and the exhaust pipe connecting port 501, and a filter positioning cylinder 8 with a cylindrical structure is provided in the positioning seat 5, the support plate 6 is in close contact with the open end of the filter positioning cylinder 8, and a through hole corresponding to the position of the intake pipe connecting port 503 is opened in the middle of the support plate 6. This structure allows the filter positioning cylinder 8 to be positioned through the support plate 6 when the filter positioning cylinder 8 is fixed to the positioning seat 5, ensuring the stability of the position of the filter positioning cylinder 8. The air collected by the air inlet pipe connection port 503 is discharged into the filter positioning cylinder 8, and the required particles are left after being filtered by the multi-layer filter 7, and the gas is discharged through the exhaust pipe connection port 501. One end of the filter positioning cylinder 8 is an open structure, and the side of the filter positioning cylinder 8 is also provided with a through-hole structure, and the filter positioning cylinder 8 is provided with a multi-layer filter 7 inside. The two ends of the support plate 6 are respectively provided with an integrated air guide ring 601 and a support seat 602, and the air guide ring 601 and the support seat 602 are both annular structures, and the air guide ring 601 is inserted into the open end of the filter positioning cylinder 8. This structure enables the support plate 6 to limit the filter positioning cylinder 8 through the air guide ring 601, and allows the collected air to smoothly enter the filter positioning cylinder 8. The inner and outer sides of the fastening cover 3 are respectively provided with There are an integrally structured snap-fit ​​seat 301 and handle 302, and a groove is provided on the snap-fit ​​seat 301 for fastening and fastening with the filter positioning cylinder 8, and the side of the snap-fit ​​seat 301 is threadedly fastened with the positioning seat 5, and a spring 4 is sleeved on the outside of the support seat 602, and the support seat 602 and the spring 4 are in contact with the positioning seat 5. In this structure, when the multi-layer filter 7 is fixed to the positioning seat 5 through the filter positioning cylinder 8, the filter positioning cylinder 8 pushes the support plate 6 until the support seat 602 is supported on the positioning seat 5, completing the fastening of the filter positioning cylinder 8 between the positioning seat 5 and the fastening cover 3, realizing a highly stable positioning of the multi-layer filter 7, and at the same time, the multi-layer filter 7 is easy to disassemble and easy to collect samples for cleanliness detection, and the air intake pipe connection port 503 does not directly impact the multi-layer filter 7.This avoids the situation where the multi-layer filter screen 7 is damaged, and improves the filtering efficiency of the multi-layer filter screen 7.

[0021] Working principle: When using the multi-filter fixing structure of the cleanliness detection device, first insert the multi-layer filter 7 into the filter positioning cylinder 8 from the opening part of the filter positioning cylinder 8, and then snap the bottom of the filter positioning cylinder 8 into the snap-in seat 301, and then take the fastening cover 3 through the handle 302, insert the filter positioning cylinder 8 into the positioning seat 5, and let the opening part of the filter positioning cylinder 8 be snapped into the air guide ring 601. At the same time, the filter positioning cylinder 8 is pressed against the support plate 6 and then continued to be pushed, and then the fastening cover 3 is rotated through the handle 302 to make the snap-in seat 301 and the positioning seat 5 threadedly fastened, and the fastening cover 3 is tightly attached to the sealing gasket 2 for sealing. After the fastening cover 3 is completely fixed to the positioning seat 5, the support seat 602 is pressed against the positioning seat 5, and the spring 4 is compressed by the support plate 6 to fasten the filter positioning cylinder 8. In the positioning seat 5, the limiting protrusion 502 plays the role of active limiting on the support plate 6, completing the positioning processing of the fixed structure main body 1 to the multi-layer filter 7. When the cleanliness detection device is performing sampling processing, the air containing particulate matter is sucked into the filter positioning cylinder 8 through the intake pipe connection port 503. The air is filtered through the multi-layer filter 7, and the particulate matter remains on the multi-layer filter 7. The multi-layer filter 7 is located on the side of the filter positioning cylinder 8, avoiding the direct impact of the airflow on the multi-layer filter 7. After the air is sampled and filtered, it is discharged through the exhaust pipe connection port 501. After sampling is completed, the filter positioning cylinder 8 is taken out of the positioning seat 5 through the fastening cover 3, and then the filter positioning cylinder 8 is removed from the clamping seat 301, and then the multi-layer filter 7 is removed to collect the sample, thereby completing a series of work.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-filter fixing structure of a cleanliness detection device, comprising a fixing structure body (1), characterized in that: The fixed structure body (1) is provided with a positioning seat (5), and the positioning seat (5) is a cylindrical structure, and the side and one end of the positioning seat (5) are respectively provided with an exhaust pipe connection port (501) and an intake pipe connection port (503), the other end of the positioning seat (5) is provided with a fastening cover (3), and a filter screen positioning cylinder (8) of a cylindrical structure is provided inside the positioning seat (5), one end of the filter screen positioning cylinder (8) is an open structure, and the side of the filter screen positioning cylinder (8) is also provided with a through-hole structure, and the filter screen positioning cylinder (8) is provided with multiple layers of filter screens (7) inside, the inner and outer sides of the fastening cover (3) are respectively provided with a clamping seat (301) and a handle (302) of an integral structure, and the clamping seat (301) is provided with a groove for fastening and fastening with the filter screen positioning cylinder (8), and the side of the clamping seat (301) is fastened to the positioning seat (5) by threads.

2. The multi-filter fixing structure of the cleanliness detection device according to claim 1, characterized in that: The inner ring of the opening end of the positioning seat (5) is also provided with a circle of grooves, and a sealing gasket (2) is fastened and clamped in the inner ring groove of the positioning seat (5), and the sealing gasket (2) is in close contact with the fastening cover (3).

3. The multi-filter fixing structure of a cleanliness detection device according to claim 1, characterized in that: One end of the inner wall of the positioning seat (5) close to the air intake pipe connection port (503) is evenly spaced with limiting protrusions (502) of an integral structure, and a support plate (6) is movably clamped in the positioning seat (5) through the limiting protrusions (502).

4. The multi-filter fixing structure of the cleanliness detection device according to claim 3, characterized in that: The support plate (6) is in close contact with the open end of the filter screen positioning cylinder (8), and a through hole corresponding to the position of the air intake pipe connection port (503) is provided in the middle of the support plate (6).

5. The multi-filter fixing structure of the cleanliness detection device according to claim 3, characterized in that: An air guide ring (601) and a support seat (602) of an integral structure are respectively provided at both ends of the support plate (6), and both the air guide ring (601) and the support seat (602) are circular ring structures, and the air guide ring (601) is inserted into the open end of the filter positioning cylinder (8).

6. The multi-filter fixing structure of the cleanliness detection device according to claim 5, characterized in that: The support seat (602) is sleeved with a spring (4) on its exterior, and both the support seat (602) and the spring (4) are in contact with and fit with the positioning seat (5).

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