A filter membrane fixture for cleanliness particle detection

Abstract

This utility model relates to the field of cleanliness particle detection technology, specifically a cleanliness particle detection filter membrane fixture, including a filter membrane fixture body. The filter membrane fixture body has an aluminum alloy base, and a suction chamber is formed within the aluminum alloy base. A support groove is formed above the suction chamber. A base plate is engaged with the support groove within the aluminum alloy base, and an aluminum alloy pressure ring is formed above the base plate. A through hole is formed in the center of the aluminum alloy pressure ring. A negative pressure suction port is formed on the side of the aluminum alloy base, located on the side of the base plate. This cleanliness particle detection filter membrane fixture ensures that the filter membrane remains flat during detection, ensuring that the focusing surface is on a single water surface. This eliminates the need for focusing algorithms, improving detection speed and repeatability, and greatly facilitating cleanliness particle detection.

Description

Technical Field

[0001] This utility model relates to the field of cleanliness particle detection technology, specifically a cleanliness particle detection filter membrane fixture. Background Technology

[0002] Cleanliness particle detection filter membranes are tools used to detect particulate pollutants in liquids or gases. They are widely used in industries such as environmental monitoring, pharmaceuticals, electronics, and automobile manufacturing. The filter membranes are usually made of high-purity materials, such as mixed cellulose esters, polytetrafluoroethylene (PTFE), and nylon, and have different pore sizes to meet various detection needs.

[0003] In the current cleanliness testing industry, high-magnification material microscopes are typically used for cleanliness testing, and 50X magnification scanning is generally employed. While this scanning mode offers high resolution, it also results in a shallow depth of field. Since the filter membrane is uneven with height differences exceeding the depth of field, focusing algorithms were previously required for scanning analysis, leading to slow analysis speed and poor repeatability. Utility Model Content

[0004] The purpose of this invention is to provide a filter membrane fixture for cleanliness particle detection, in order to solve the problems mentioned in the background art, such as the filter membrane positioning not being flat enough, the height difference being greater than the depth of field, the need to use focusing algorithm scanning analysis, resulting in slow analysis speed and poor detection repeatability in the current cleanliness particle detection on the market.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cleanliness particle detection filter membrane fixture, comprising a filter membrane fixture body, an aluminum alloy base on the filter membrane fixture body, a suction chamber inside the aluminum alloy base, and a ring of support grooves above the suction chamber, a base plate engaging with the support grooves inside the aluminum alloy base, an aluminum alloy pressure ring above the base plate, and a through hole in the center of the aluminum alloy pressure ring, and a negative pressure suction port on the side of the aluminum alloy base, the negative pressure suction port being located on the side of the base plate.

[0006] Preferably, the aluminum alloy base is further provided with a circular limiting groove, and the limiting groove and the support slot are coaxial.

[0007] Preferably, the aluminum alloy base is also provided with evenly spaced support columns, and the upper surface of the support columns is flush with the bottom surface of the support slot.

[0008] Preferably, the outer ring of the aluminum alloy pressure ring is integrally provided with a wear-resistant and anti-slip protrusion, and the lower part of the aluminum alloy pressure ring is in contact with the base plate, and the size of the through hole is smaller than the size of the base plate.

[0009] Preferably, a limiting ring is integrally provided below the aluminum alloy pressure ring, and the limiting ring is engaged with the limiting groove.

[0010] Preferably, the base plate is a white, highly flat and breathable ceramic plate with a diameter of 50mm.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This cleanliness particle detection filter membrane fixture keeps the filter membrane flat during detection, ensuring that the focusing surface is on the same water surface. This eliminates the need for focusing algorithms, improving detection speed and repeatability, and greatly facilitating cleanliness particle detection and processing.

[0013] This cleanliness particle detection filter membrane fixture uses a highly flat and breathable ceramic plate as the base plate for filter membrane support. The base plate is positioned by an aluminum alloy base and the edges of the base plate are pressed by an aluminum alloy pressure ring to ensure that the filter membrane has a good suction effect and improve the cleanliness particle detection efficiency. Attached Figure Description

[0014] Figure 1 This is a top view of a filter membrane fixture for detecting cleanliness particles according to this utility model;

[0015] Figure 2 This is a side view of the disassembled filter membrane fixture for particle detection of cleanliness according to this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of a cleanliness particle detection filter membrane fixture according to the present invention.

[0017] Figure 4 This is a schematic diagram of the aluminum alloy base structure of a cleanliness particle detection filter membrane fixture according to the present invention;

[0018] Figure 5 This is a schematic diagram of the bottom structure of the aluminum alloy pressure ring of a cleanliness particle detection filter membrane fixture according to this utility model.

[0019] In the figure: 1. Filter membrane clamp body; 2. Aluminum alloy base; 201. Suction chamber; 202. Limiting groove; 203. Negative pressure suction port; 204. Support slot; 205. Support column; 3. Aluminum alloy pressure ring; 301. Wear-resistant and anti-slip protrusion; 302. Limiting ring; 303. Through hole; 4. Base plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This utility model provides a technical solution: a filter membrane fixture for cleanliness particle detection, including a filter membrane fixture body 1, an aluminum alloy base 2 on the filter membrane fixture body 1, a suction chamber 201 inside the aluminum alloy base 2, a supporting groove 204 above the suction chamber 201, and a circular limiting groove 202 on the aluminum alloy base 2, with the limiting groove 202 and the supporting groove 204 being coaxial. This structure, through the aluminum alloy base 2, constitutes the basic positioning structure of the filter membrane fixture body 1, ensuring that the filter membrane can be positioned during cleanliness particle detection. A base plate 4 is engaged with the base 2 within the support slot 204. Support columns 205 are evenly spaced within the aluminum alloy base 2, with the upper surface of each support column 205 flush with the bottom surface of the support slot 204. This structure allows the base plate 4 to be stably supported by the support columns 205, ensuring the stability of the filter membrane. An aluminum alloy pressure ring 3 is located above the base plate 4, with a through hole 303 in its center. A wear-resistant, anti-slip protrusion 301 is integrally formed on the upper part of the outer ring of the aluminum alloy pressure ring 3, and the lower part of the aluminum alloy pressure ring 3 contacts and engages with the base plate 4. The size of the through hole 303 is smaller than the size of the base plate 4. This structure allows the aluminum alloy pressure ring 3 to be easily lifted via the wear-resistant and anti-slip protrusions 301. Simultaneously, the aluminum alloy pressure ring 3 provides edge weight reinforcement to the base plate 4, preventing insufficient suction at the edges of the base plate 4 from affecting the positioning of the filter membrane and ensuring a leveling effect of the base plate 4. This results in a flat filter membrane for cleanliness testing. A limiting ring 302 is also integrally provided below the aluminum alloy pressure ring 3, and the limiting ring 302 engages with the limiting groove 202. This structure allows the aluminum alloy pressure ring 3 to be reliably positioned through the engagement of the limiting ring 302 and the limiting groove 202, and also secures the base plate 4. A negative pressure opening is provided on the side of the aluminum alloy base 2. The negative pressure suction port 203, through an external suction pump, can perform air extraction on the base plate 4, ensuring that the filter membrane adheres tightly to the base plate 4 and guaranteeing the quality of cleanliness testing. The negative pressure suction port 203 is located on the side of the base plate 4, which is a white, highly flat and breathable ceramic plate with a diameter of 50mm. This structure allows the base plate 4 to be compatible with filter membranes of 47mm and 50mm in size. Since the base plate 4 is a white, highly flat and breathable ceramic plate, it can effectively increase the imaging contrast of the filter membrane, especially for nylon and PET filter membranes, providing better imaging effects without affecting the test data, and also improving the leveling effect.

[0022] Working Principle: When using this cleanliness particle detection filter membrane fixture, the main body 1 of the filter membrane fixture is first positioned by the aluminum alloy base 2. The base plate 4 is secured to the aluminum alloy base 2 by the support slot 204 and is stably supported by the support column 205. The filter membrane for cleanliness particle detection is placed on the base plate 4. Then, the aluminum alloy pressure ring 3 is placed on the upper edge of the base plate 4, and the limiting ring 302 is secured to the limiting groove 202. The part of the base plate 4 exposed through the through hole 303 is used for filter membrane detection. The wear-resistant and anti-slip protrusion 301 facilitates the removal of the aluminum alloy pressure ring 3. Then, the gas in the suction chamber 201 is extracted by the cooperation of the external suction pump and the negative pressure air extraction port 203. Since the base plate 4 is a highly flat and breathable ceramic plate, it has a better leveling effect. At the same time, the white base plate 4 can effectively increase the contrast of the filter membrane imaging and has a better imaging effect. There is no need to use a focusing algorithm. Through the setting of the filter membrane fixture main body 1, the efficiency of cleanliness particle detection is improved, thereby completing a series of tasks.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A filter membrane fixture for cleanliness particle detection, comprising a filter membrane fixture body (1), characterized in that: The filter membrane clamp body (1) is provided with an aluminum alloy base (2), and a suction chamber (201) is provided inside the aluminum alloy base (2). A ring of support slots (204) is also provided above the suction chamber (201). A base plate (4) is engaged in the support slots (204) inside the aluminum alloy base (2). An aluminum alloy pressure ring (3) is provided above the base plate (4). A through hole (303) is provided in the middle of the aluminum alloy pressure ring (3). A negative pressure suction port (203) is provided on the side of the aluminum alloy base (2). The negative pressure suction port (203) is located on the side of the base plate (4).

2. The cleanliness particle detection filter membrane fixture according to claim 1, characterized in that: The aluminum alloy base (2) is also provided with a circular limiting groove (202), and the limiting groove (202) and the support slot (204) are coaxial.

3. The cleanliness particle detection filter membrane fixture according to claim 1, characterized in that: The aluminum alloy base (2) is also equipped with evenly spaced support columns (205), and the upper surface of the support column (205) is flush with the bottom surface of the support slot (204).

4. The cleanliness particle detection filter membrane fixture according to claim 1, characterized in that: The aluminum alloy pressure ring (3) has an integral wear-resistant and anti-slip protrusion (301) on the upper part of the outer ring, and the aluminum alloy pressure ring (3) is in contact with the bottom plate (4) below. The size of the through hole (303) is smaller than the size of the bottom plate (4).

5. A filter membrane fixture for cleanliness particle detection according to claim 2, characterized in that: The aluminum alloy pressure ring (3) is also integrally provided with a limiting ring (302) below it, and the limiting ring (302) is engaged with the limiting groove (202).

6. The cleanliness particle detection filter membrane fixture according to claim 1, characterized in that: The base plate (4) is a white, highly flat and breathable ceramic plate, and the diameter of the base plate (4) is 50mm.

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