Filter paper clamping device and filter paper particle extracting device

Abstract

The utility model relates to a filter paper clamping device and a filter paper particle extraction device. The filter paper clamping device comprises a first clamping piece and a second clamping piece; a first clamping groove and a first through hole communicating with the first clamping groove are formed in the first clamping piece in the axial direction; the groove wall of the first clamping groove is used for abutting against the peripheral wall of the filter paper. A second through hole communicated with the first clamping groove is formed in the second clamping piece; the first through hole and the second through hole are used for allowing particles attached to the filter paper to pass through. The second clamping piece abuts against the axial side wall of the filter paper, so that the filter paper is clamped and limited in cooperation with the first clamping groove; the groove wall of the first clamping groove abuts against the peripheral wall of the filter paper, so that the peripheral wall of the filter paper is sealed, the possibility that fibrous matter leaks from the periphery of the filter paper when the filter paper is immersed in a solvent is reduced, and then the possibility that particles separated from the filter paper cover the fibrous matter is reduced; and it is ensured that particles can be clearly observed or extracted in subsequent detection and analysis.

Description

Technical Field

[0001] The present application relates to the field of detection technology, and in particular to a filter paper clamp and a filter paper particle extraction device. Background Art

[0002] Filter elements are widely used in oil purification of major equipment such as steam turbines, generators, pumps, and fans. They are important components for filtering impurities in lubricating oil and protecting the normal operation of equipment. Abnormal contamination of lubricating oil, severe wear caused by improper operation of equipment, etc., will cause the filter element to be blocked and cause filter element failure. In order to find out the cause of the filter element failure, it is necessary to conduct a multi-faceted analysis of the filter element failure. Particle extraction from the filter element is one of the essential steps in the filter element failure analysis. The quality of particle extraction will directly affect the failure analysis results of the entire filter element.

[0003] The filter paper plays the main filtering function of the filter element. The widely used method for extracting filter element particles is to disassemble the filter element, cut the filter paper fragments in the main particle interception layer of the filter element, that is, the filter layer, select a solvent that is soluble in the oil filtered by the filter element, and directly immerse the filter paper in the solvent and vibrate for several minutes. The particles on the filter paper are continuously shaken off the filter paper after mechanical vibration, and the filter paper leachate mixed with the solvent and particles is obtained. Subsequently, the filter paper fragments can be picked out, and the filter element leachate can be extracted by micron-level filter membrane experiment to obtain the filter membrane with attached particles, and then the particles of the filter membrane can be detected and analyzed.

[0004] However, after the filter paper is cut, there are fractures around it, which leads to the presence of a large amount of fiber material in the filter paper leachate, affecting the extraction and detection analysis of the particles. Utility Model Content

[0005] Based on this, it is necessary to provide a filter paper clamp to address the problem of poor extraction effect of existing filter paper particle extraction devices.

[0006] A filter paper clamp is applied to a filter paper particle extraction device, and the filter paper clamp comprises:

[0007] A first clamping member is axially provided with a first clamping groove and a first through hole communicating with the first clamping groove; a groove wall of the first clamping groove is used to abut against an outer peripheral wall of the filter paper;

[0008] The second clamping member is constructed with a second through hole connected to the first clamping groove; at least a portion of the second clamping member is detachably inserted into the first clamping groove and abuts against a side of the filter paper away from the first through hole; the first through hole and the second through hole are used for allowing particles attached to the filter paper to pass through.

[0009] In one of the embodiments, a first sealing ring is disposed in the first clamping groove, and the first sealing ring abuts against a side of the filter paper facing away from the second clamping member.

[0010] In one embodiment, the filter paper clamp further includes a second sealing ring connected between the second clamping member and the filter paper.

[0011] In one embodiment, the first clamping member includes a first clamping section and a second clamping section, and the inner diameter of the first clamping section is smaller than the inner diameter of the second clamping section;

[0012] The first clamping section is provided with the first through hole; the second clamping section is provided with the first clamping groove.

[0013] In one embodiment, the outer diameter of the first clamping section is different from the outer diameter of the second clamping section.

[0014] In one embodiment, the second clamping member includes a third clamping segment and a fourth clamping segment, and the third clamping segment and the fourth clamping segment have different outer diameters; at least a portion of the third clamping segment passes through the first clamping groove.

[0015] In one embodiment, the outer diameter of the third clamping segment is smaller than the outer diameter of the fourth clamping segment.

[0016] In one embodiment, the second clamping section is configured with an internal thread, and the third clamping section is configured with an external thread matching the internal thread.

[0017] A filter paper particle extraction device comprises a container containing a solvent and the filter paper clamp as described above immersed in the solvent.

[0018] In one embodiment, the filter paper particle extraction device further includes an ultrasonic cleaner, and the container is placed in the ultrasonic cleaner.

[0019] The filter paper clamp, when immersed in a solvent, is provided with a first through hole and a second through hole respectively on the first clamp and the second clamp, so that particles attached to the filter paper can be mixed into the solvent through the first through hole and the second through hole. The second clamp abuts against the axial side wall of the filter paper, thereby cooperating with the first clamping groove to clamp and limit the filter paper; the groove wall of the first clamping groove abuts against the peripheral wall of the filter paper, thereby sealing the peripheral wall of the filter paper, reducing the possibility of fiber material leaking from the periphery of the filter paper when the filter paper is immersed in the solvent, thereby reducing the possibility of fiber material covering particles separated from the filter paper, and ensuring that the particles can be clearly observed or extracted in subsequent detection and analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG. 1 is a schematic diagram of a filter paper particle extraction device provided in an embodiment of the present application.

[0021] FIG. 2 is a schematic diagram of a filter paper clamp in the filter paper particle extraction device shown in FIG. 1 .

[0022] FIG. 3 is an exploded view of the filter paper clamp shown in FIG. 2 .

[0023] Figure numbers: 10, filter paper particle extraction device; 100, filter paper clamp; 110, first clamping member; 111, first through hole; 112, first clamping groove; 113, first clamping section; 114, second clamping section; 120, second clamping member; 121, second through hole; 122, third clamping section; 123, fourth clamping section; 130, first sealing ring; 140, second sealing ring; 200, filter paper; 300, container; 310, solvent; 400, ultrasonic cleaner; 410, water. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0025] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0028] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0030] As mentioned in the background technology, particle extraction in the filter element is an important part of filter element failure analysis. In the related technology, a filter paper extract in which the solvent and particles are mixed is obtained by cutting a piece of filter paper in the faulty filter element and immersing the filter paper in a solvent and vibrating it for several minutes. However, after the filter paper is cut, there are fractures around it, which causes a large amount of fibrous material to leak into the filter paper extract. A large amount of fibrous material is deposited on the surface of the filter membrane, causing the particles to be covered by a large amount of fibrous material. During the iron spectrum analysis, few particles can be observed, and the types of particles observed may be incomplete, which affects the extraction and detection analysis of the particles. At the same time, due to the presence of a large amount of fibrous material on the surface of the filter membrane, it is difficult to stick the particles when using conductive glue to pick up the particles for electron microscope energy spectrum analysis, and it is difficult to determine the position of the particles in the electron microscope scanner image.

[0031] Based on this, the present application provides a filter paper clamping device, which can reduce the possibility of fiber material being exposed from the periphery of the filter paper. The filter element clamping device provided in an embodiment of the present application will be described in detail below in conjunction with the accompanying drawings.

[0032] FIG2 is a schematic diagram of a filter paper clamp according to an embodiment of the present application, and FIG3 is an exploded diagram of the filter paper clamp shown in FIG2. Referring to FIG2 and FIG3, a filter paper clamp 100 provided in an embodiment of the present application is applied to a filter paper particle extraction device 10, and the filter paper clamp 100 includes a first clamping member 110 and a second clamping member 120; the first clamping member 110 is axially configured with a first clamping groove 112 and a first through hole 111 connected to the first clamping groove 112; the groove wall of the first clamping groove 112 is used to abut against the outer peripheral wall of the filter paper 200; the second clamping member 120 is configured with a second through hole 121 connected to the first clamping groove 112; at least part of the second clamping member 120 is detachably arranged in the first clamping groove 112, and abuts against a side of the filter paper 200 away from the first through hole 111; the first through hole 111 and the second through hole 121 are used for particles attached to the filter paper 200 to pass through.

[0033] The filter paper clamp 100, when the filter paper 200 is immersed in the solvent 310, provides the first through hole 111 and the second through hole 121 on the first clamp 110 and the second clamp 120, respectively, so that the particles attached to the filter paper 200 can be mixed into the solvent 310 through the first through hole 111 and the second through hole 121. The second clamp 120 abuts against the axial side wall of the filter paper 200, thereby cooperating with the first clamp groove 112 to clamp and limit the filter paper 200; the groove wall of the first clamp groove 112 abuts against the outer peripheral wall of the filter paper 200, thereby sealing the outer peripheral wall of the filter paper 200, reducing the possibility of fiber material leaking from the periphery of the filter paper 200 when the filter paper 200 is immersed in the solvent 310, thereby reducing the possibility of fiber material covering the particles separated from the filter paper 200, and ensuring that the particles can be clearly observed or extracted in subsequent detection and analysis.

[0034] Among them, the aperture of the first through hole 111 is smaller than the outer diameter of the first clamping groove 112, so that a transition step is formed between the two, and the filter paper 200 can abut against the step. The first clamping member 110 and the second clamping member 120 can be a circular cylindrical structure. The outer diameter of the filter paper 200 can be slightly smaller than the inner diameter of the first clamping member 110, which is convenient for the filter paper 200 to be placed in the first clamping groove 112, and can also ensure the sealing effect after the filter paper 200 is placed; at the same time, the outer diameter of the filter paper 200 is larger than the aperture of the first through hole 111, so that the filter paper 200 can abut against the step, so that the step and the second clamping member 120 cooperate to clamp the filter paper 200.

[0035] Referring to FIG. 2 and FIG. 3, in one embodiment, a first sealing ring 130 is provided in the first clamping groove 112, and the first sealing ring 130 abuts against the side of the filter paper 200 away from the second clamping member 120. Further, the filter paper clamp 100 also includes a second sealing ring 140 connected between the second clamping member 120 and the filter paper 200. That is, the first sealing ring 130 is located between the transition step and the filter paper 200, and the second sealing ring 140 is located between the filter paper 200 and the second clamping member 120. By providing the first sealing ring 130 and the second sealing ring 140 to seal the filter paper 200 respectively, the possibility of the fiber material in the filter paper 200 leaking from the peripheral fracture is further reduced. The outer diameters of the first sealing ring 130 and the second sealing ring 140 are the same as the outer diameters of the filter paper 200, so that the sealing rings can fully contact the filter paper 200 and the second clamping member 120. The first sealing ring 130 and the second sealing ring 140 can be made of rubber.

[0036] Specifically, the inner diameter of the first sealing ring 130 can be consistent with the aperture of the first through hole 111, and the outer diameter of the first sealing ring 130 can be the same as the inner diameter of the first clamping member 110, so that the first sealing ring 130 can fully contact the first clamping member 110 to ensure the sealing effect, and the first sealing ring 130 has a certain elastic deformation ability, so it can also be smoothly placed in the first clamping groove 112. The inner diameter of the second sealing ring 140 can be consistent with the aperture of the second through hole 121, and the outer diameter of the first sealing ring 130 is the same as the outer diameter of the second clamping member 120, so that the second sealing ring 140 can fully contact the second clamping member 120 to ensure the sealing effect. In other embodiments, the inner diameter of the first sealing ring 130 may be different from the aperture of the first through hole 111, for example, the inner diameter of the first sealing ring 130 is slightly larger than the aperture of the first through hole 111; the inner diameter of the second sealing ring 140 may be different from the aperture of the second through hole 121, for example, the inner diameter of the second sealing ring 140 is slightly larger than the aperture of the second through hole 121, but this is not limited here.

[0037] Referring to FIG. 2 and FIG. 3 , in one embodiment, the first clamping member 110 includes a first clamping section 113 and a second clamping section 114, the inner diameter of the first clamping section 113 is smaller than the inner diameter of the second clamping section 114; the first clamping section 113 is provided with a first through hole 111; the second clamping section 114 is provided with a first clamping groove 112. Further, the outer diameter of the first clamping section 113 is different from the outer diameter of the second clamping section 114, so that it is convenient for the operator to hold the first clamping section 113 during the process of loading the filter paper. Further, the outer diameter of the first clamping section 113 is smaller than the outer diameter of the second clamping section 114.

[0038] Referring to FIG. 2 and FIG. 3 , in one embodiment, the second clamping member 120 includes a third clamping section 122 and a fourth clamping section 123, and the third clamping section 122 and the fourth clamping section 123 have different outer diameters; at least a portion of the third clamping section 122 is inserted into the first clamping groove 112. Further, the outer diameter of the third clamping section 122 is smaller than the outer diameter of the fourth clamping section 123. With this arrangement, after the filter paper 200 is placed in the first clamping groove 112, it is convenient for the operator to hold the fourth clamping section 123 to screw the third clamping section 122 into the first clamping groove 112.

[0039] 2 and 3, in one embodiment, the second clamping section 114 is configured with an internal thread, and the third clamping section 122 is configured with an external thread that matches the internal thread. The thread matching of the two further ensures the sealing effect around the filter paper 200, reducing the possibility of fiber material leakage.

[0040] When using the filter paper clamp 100, first put the first sealing ring 130 into the first clamping groove 112, then put the filter paper 200 and the second sealing ring 140 in sequence, and then screw the second clamping member 120 into the first clamping groove 112. Through the threaded fit between the first clamping member 110 and the second clamping member 120, screw the second clamping member 120 into the second sealing ring 140, so that the first sealing ring 130 and the second sealing ring 140 are compressed to produce an axial sealing effect. At the same time, the groove wall of the first clamping groove 112 will play a radial sealing effect. Through radial sealing and axial sealing, the leakage of fiber materials in the filter paper 200 can be reduced, thereby ensuring the extraction effect of particles in subsequent processing.

[0041] Referring to FIG. 1 , further, an embodiment of the present application further provides a filter paper particle extraction device 10, comprising a container 300 containing a solvent 310 and the filter paper clamp 100 as described above immersed in the solvent 310. The container 300 may be a beaker, the solvent 310 may be gasoline, etc., and the solvent 310 must completely immerse the filter paper 200.

[0042] Since the filter paper particle extraction device 10 includes the filter paper clamp 100 of any of the above-mentioned embodiments, when the filter paper 200 is immersed in the solvent 310, the first through hole 111 and the second through hole 121 are respectively provided on the first clamp 110 and the second clamp 120, so that the particles attached to the filter paper 200 can be mixed into the solvent 310 through the first through hole 111 and the second through hole 121. The second clamping member 120 abuts against the axial side wall of the filter paper 200, thereby cooperating with the first clamping groove 112 to clamp and limit the filter paper 200; the groove wall of the first clamping groove 112 abuts against the outer peripheral wall of the filter paper 200, thereby sealing the outer peripheral wall of the filter paper 200, thereby reducing the possibility of fiber material leaking from the periphery of the filter paper 200 when the filter paper 200 is immersed in the solvent 310, thereby reducing the possibility of fiber material covering the particles separated from the filter paper 200, and the extracted particles are less affected by fiber covering, and can be easily observed in iron spectrum analysis and electron microscope energy spectrum analysis.

[0043] Referring to FIG. 1 , in one embodiment, the filter paper particle extraction device 10 further includes an ultrasonic cleaner 400, and the container 300 is placed in the ultrasonic cleaner 400. The ultrasonic cleaner 400 is filled with water 410. The filter paper 200 in the container 300 is ultrasonically vibrated by the ultrasonic cleaner 400, so that the particles on the filter paper 200 are fully shaken off, thereby obtaining the filter paper 200 leachate. A 0.45um filter membrane test is performed on the filter paper 200 leachate to obtain a filter membrane with attached particles, and then the particles on the filter membrane are subjected to iron spectrum analysis; and the particles on the filter membrane are adhered and subjected to electron microscope-energy spectrum analysis.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A filter paper clamp, characterized in that: Applied to a filter paper particle extraction device, the filter paper clamp comprises: A first clamping member (110) is axially provided with a first clamping groove (112) and a first through hole (111) communicating with the first clamping groove (112); a groove wall of the first clamping groove (112) is used to abut against an outer peripheral wall of the filter paper (200); The second clamping member (120) is constructed with a second through hole (121) communicating with the first clamping groove (112); at least a portion of the second clamping member (120) is detachably inserted into the first clamping groove (112) and abuts against a side of the filter paper (200) facing away from the first through hole (111); the first through hole (111) and the second through hole (121) are used for allowing particles attached to the filter paper (200) to pass through.

2. The filter paper clamp according to claim 1, characterized in that: A first sealing ring (130) is arranged in the first clamping groove (112), and the first sealing ring (130) abuts against a side of the filter paper (200) facing away from the second clamping member (120).

3. The filter paper clamp according to claim 1, characterized in that: The filter paper clamp further comprises a second sealing ring (140) connected between the second clamping member (120) and the filter paper (200).

4. The filter paper clamp according to claim 1, characterized in that: The first clamping member (110) comprises a first clamping section (113) and a second clamping section (114); the inner diameter of the first clamping section (113) is smaller than the inner diameter of the second clamping section (114); The first clamping section (113) is provided with the first through hole (111); and the second clamping section (114) is provided with the first clamping groove (112).

5. The filter paper clamp according to claim 4, characterized in that: The outer diameter of the first clamping section (113) is different from the outer diameter of the second clamping section (114).

6. The filter paper clamp according to claim 4, characterized in that: The second clamping member (120) comprises a third clamping section (122) and a fourth clamping section (123); the third clamping section (122) and the fourth clamping section (123) have different outer diameters; at least a portion of the third clamping section (122) is inserted into the first clamping groove (112).

7. The filter paper clamp according to claim 6, characterized in that: The outer diameter of the third clamping section (122) is smaller than the outer diameter of the fourth clamping section (123).

8. The filter paper clamp according to claim 6, characterized in that: The second clamping section (114) is configured with an internal thread, and the third clamping section (122) is configured with an external thread matching the internal thread.

9. A filter paper particle extraction device, characterized in that: The invention comprises a container (300) containing a solvent (310) and the filter paper clamp according to any one of claims 1 to 8 immersed in the solvent (310).

10. The filter paper particle extraction device according to claim 9, characterized in that: The filter paper particle extraction device further comprises an ultrasonic cleaner (400), and the container (300) is placed in the ultrasonic cleaner (400).

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