A differential angle sealing structure and its sealing performance testing method

Abstract

This invention discloses a differential angle sealing structure and a method for testing its sealing performance, relating to the field of differential angle sealing structures. The differential angle sealing structure and its sealing performance testing method include a sealing seat and a valve assembly. The sealing seat is disposed below the valve assembly, and a connecting cavity connected to the valve assembly is provided on the sealing seat near its top. The valve assembly is vertically disposed above the connecting cavity and is formed by grinding. A connecting head corresponding to the connecting cavity is provided at the bottom end of the valve assembly. This differential angle sealing structure and its sealing performance testing method, through steps such as appearance inspection, structural assembly, sealing performance testing, test analysis, defect handling, and reprocessing, achieves simple, stable, and efficient sealing performance testing of differential angle sealing structures. Defects in individual parts are addressed during testing, and zero rework is possible after testing, effectively improving the product's sealing test pass rate.

Description

Technical Field

[0001] This invention relates to the field of differential angle sealing structure technology, specifically to a differential angle sealing structure and a method for detecting its sealing performance. Background Technology

[0002] Differential angle sealing structures typically consist of two parts: a sealing seat and a valve assembly. During use, in order to ensure the sealing effect of the differential angle sealing structure, it is usually necessary to perform a sealing test on the connection between the sealing seat and the valve assembly.

[0003] In existing technologies, the sealing performance of differential angle seals is generally determined by testing technical conditions such as the roundness and coaxiality of the cone angle seal, or by coloring the cone surface.

[0004] However, the above solutions still have some problems. For example, it is not easy to detect the technical conditions such as roundness, runout, and coaxiality at the sealing cone corner of the differential angle sealing structure for irregular parts. In addition, even if the test determines that a single part is qualified, when the assembly is tested for sealing performance, the sealing performance index often exceeds the tolerance, making the sealing performance judgment of the differential angle sealing structure unreliable. This results in a low first-time sealing performance pass rate for differential angle sealing structure products, often requiring the overhaul of a large number of parts. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a differential angle sealing structure and its sealing performance testing method. This solves the problems of the difficulty in testing the roundness, runout, and coaxiality of the sealing cone at the corner of the differential angle sealing structure for irregularly shaped parts, as well as the unreliability of the sealing performance judgment of the differential angle sealing structure. These issues result in a low first-time sealing performance pass rate for differential angle sealing structure products, often requiring the rework of a large number of parts.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a differential angle sealing structure comprising a sealing seat and a valve assembly.

[0009] The sealing seat is disposed below the valve assembly, and a connecting cavity for connecting to the valve assembly is provided on the sealing seat near the top.

[0010] The valve assembly is vertically disposed above the connecting cavity. The valve assembly is formed by grinding. The bottom end of the valve assembly is provided with a connector corresponding to the connecting cavity.

[0011] Preferably, a sealing ring is provided at the top of the connecting cavity, and a sealing cone is provided on the inner wall of the sealing ring near the top.

[0012] Preferably, a light inlet is provided on the left side of the sealing seat near the bottom, and a cold light source is provided on the left side of the light inlet.

[0013] Preferably, a ring-shaped array of guide posts is provided on the outer wall of the connector near the bottom, and the guide posts are engaged with the connecting cavity.

[0014] Preferably, a component ring is provided on the outer side of the connector near the top, and a sealing cone surface is provided on the outer circumferential wall of the component ring near the bottom.

[0015] Preferably, the sealing area between the sealing seat and the valve assembly is provided with an observation area for detecting light and observing.

[0016] On the other hand, a method for detecting a differential angle sealing structure is also provided. The operation steps for a differential angle sealing structure according to any one of the above are as follows:

[0017] S1. Visual inspection: Move the sealing seat and valve assembly to the stage of the binocular microscope in sequence. Observe the surface of the sealing seat and valve assembly under 10x magnification through the binocular microscope. The sealing area of ​​the sealing seat and valve assembly should be free of any foreign matter or defects.

[0018] S2. Structural assembly: Move the valve assembly above the sealing seat so that the sealing seat and the valve assembly are naturally placed vertically. Then, move the valve assembly downward so that the connector is close to the connecting cavity, so that the guide post is engaged with the connecting cavity, so that the part ring is in contact with the sealing ring, and so that the sealing cone angle and the sealing cone surface are in contact to form a cone surface seal.

[0019] S3. For sealing test, move the assembled structure to a darker place, then move the cold light source to the left side of the light inlet so that the light from the cold light source shines into the inside of the sealing seat through the light inlet. Then, observe whether the light beam passes through in the observation area. After that, rotate the valve assembly so that the sealing cone surface rotates on the sealing cone angle, thereby observing whether the light beam passes through the seal in all directions.

[0020] S4. Detection and analysis: If a beam passes through the vicinity of the observation area, there is a sealing defect between the sealing cone angle and the sealing cone surface. Since the valve assembly is formed by grinding, the part ring and sealing cone surface have the characteristics of integrity, dimensional stability and good technical conditions. Therefore, there is a processing defect on the surface of the sealing cone angle.

[0021] S5. Defect handling: Apply polishing paste to the surface of the sealing cone angle, and then use a cast iron grinder to grind the sealing cone angle. After grinding, clean the surface of the sealing seat with alcohol and dry it with an air gun.

[0022] S6. Repeat the test. First, repeat the operation step S1 to observe whether there are any appearance defects at the sealing cone corner. After confirming that there are no appearance defects, repeat the operation steps S2-S4. Use a cold light source to perform a light transmission test at the sealing cone corner. If no visible light beam passes through, it is qualified.

[0023] This invention discloses a differential angle sealing structure and a method for detecting its sealing performance, which has the following beneficial effects:

[0024] This differential angle sealing structure and its sealing performance testing method, through steps such as appearance inspection, structural assembly, sealing performance testing, test analysis, defect handling, and reprocessing, utilizes the transmittance of a cold light source to test the sealing performance at the connection between the sealing seat and the valve assembly. This achieves simple, stable, and efficient sealing performance testing of the differential angle sealing structure, and handles defects in individual parts during testing. After testing, zero rework of parts can be achieved, effectively improving the product's sealing test pass rate. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the sealing seat structure of the present invention;

[0028] Figure 3 For the present invention Figure 2 Enlarged view of the structure of part A;

[0029] Figure 4 This is a schematic diagram of the valve assembly structure of the present invention.

[0030] In the diagram: 1. Sealing seat; 11. Connecting cavity; 12. Sealing ring; 121. Sealing cone angle; 13. Light inlet; 2. Valve assembly; 21. Connector; 22. Guide post; 23. Part ring; 231. Sealing cone surface; 3. Cold light source; 4. Observation area. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This application provides a differential angle sealing structure and its sealing performance testing method, which solves the problems of the difficulty in testing the roundness, runout, and coaxiality of the sealing cone corner of the differential angle sealing structure of irregular parts, as well as the unreliability of the sealing performance judgment of the differential angle sealing structure. This results in a low first-pass sealing performance test pass rate for differential angle sealing structure products, often requiring the rework of a large number of parts. The method achieves simple, stable, and efficient sealing performance testing of differential angle sealing structures, and handles defects of individual parts during testing. After testing, zero rework of parts can be achieved, effectively improving the sealing test pass rate of products.

[0033] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0034] Example 1

[0035] This invention discloses a differential angle sealing structure.

[0036] According to the appendix Figure 1-4 As shown, a differential angle sealing structure includes a sealing seat 1 and a valve assembly 2:

[0037] The sealing seat 1 is located below the valve assembly 2, and a connecting cavity 11 connected to the valve assembly 2 is provided on the sealing seat 1 near the top.

[0038] The valve assembly 2 is vertically positioned above the connecting cavity 11. The valve assembly 2 is formed by grinding, which makes the part ring 23 and the sealing cone surface 231 have the characteristics of completeness, dimensional stability and good technical conditions, ensuring that the surface of the sealing cone surface 231 is free of sealing defects. The bottom end of the valve assembly 2 is provided with a connector 21 corresponding to the connecting cavity 11.

[0039] A sealing ring 12 is provided at the top of the connecting cavity 11, and a sealing cone angle 121 is provided on the inner wall of the sealing ring 12 near the top.

[0040] A light inlet 13 is provided on the left side of the sealing seat 1 near the bottom. A cold light source 3 is provided on the left side of the light inlet 13. The cold light source 3 and the light inlet 13 work together to allow light to shine into the inside of the sealing seat 1, which facilitates the sealing performance test of the sealing area between the sealing seat 1 and the valve assembly 2.

[0041] A ring array of guide posts 22 is provided on the outer wall of the connector 21 near the bottom. The guide posts 22 are engaged with the connecting cavity 11. The guide posts 22 can guide the bottom of the valve assembly 2, which facilitates the connection between the connector 21 and the connecting cavity 11.

[0042] A component ring 23 is provided on the outer side of the connector 21 near the top. A sealing cone 231 is provided on the outer circumference of the component ring 23 near the bottom. The sealing cone 121 and the sealing cone 231 cooperate with each other to perform cone sealing at the connection between the sealing seat 1 and the valve assembly 2, so that the sealing seat 1 and the valve assembly 2 have a good sealing effect and are convenient to use.

[0043] An observation area 4 is provided at the sealing point between the sealing seat 1 and the valve assembly 2 to observe whether a light beam passes through the sealing point between the sealing seat 1 and the valve assembly 2, so as to facilitate the analysis of the sealing performance.

[0044] Working principle: When this differential angle sealing structure is in use, the valve assembly 2 is moved above the sealing seat 1, so that the sealing seat 1 and the valve assembly 2 are naturally placed vertically. Then, the valve assembly 2 is moved downward, so that the connector 21 is close to the connecting cavity 11, and the guide post 22 is engaged with the connecting cavity 11. This causes the part ring 23 to contact the sealing ring 12, and the sealing cone angle 121 and the sealing cone surface 231 to fit together for a cone surface seal. This connects and fixes the sealing seat 1 and the valve assembly 2, facilitating the use of the sealing structure.

[0045] Example 2

[0046] This invention discloses a method for detecting the sealing performance of a differential angle sealing structure.

[0047] According to the appendix Figure 1-4 As shown, it includes a sealing seat 1 and a valve assembly 2. The sealing seat 1 is disposed below the valve assembly 2, and a connecting cavity 11 connected to the valve assembly 2 is provided on the sealing seat 1 near the top.

[0048] The valve assembly 2 is vertically positioned above the connecting cavity 11. The valve assembly 2 is formed by grinding. The bottom end of the valve assembly 2 is provided with a connector 21 corresponding to the connecting cavity 11.

[0049] A sealing ring 12 is provided at the top of the connecting cavity 11, and a sealing cone angle 121 is provided on the inner wall of the sealing ring 12 near the top.

[0050] A light inlet 13 is provided on the left side of the sealing seat 1 and near the bottom, and a cold light source 3 is provided on the left side of the light inlet 13.

[0051] A ring array of guide posts 22 is provided on the outer wall of the connector 21 near the bottom end, and the guide posts 22 are engaged with the connecting cavity 11.

[0052] A component ring 23 is provided on the outer side of the connector 21 near the top, and a sealing cone surface 231 is provided on the outer circumference of the component ring 23 near the bottom.

[0053] An observation area 4 is provided at the sealing point between the sealing seat 1 and the valve assembly 2 for detecting light and making observations.

[0054] The testing method for this differential angle sealing structure has the following operating steps:

[0055] S1. Visual inspection: Move the sealing seat 1 and the valve assembly 2 onto the stage of the binocular microscope in sequence. Observe the surface of the sealing seat 1 and the valve assembly 2 under 10x magnification through the binocular microscope. It is required that there are no extraneous objects or defects at the sealing part of the sealing seat 1 and the valve assembly 2.

[0056] S2. Structural assembly: Move the valve assembly 2 above the sealing seat 1 so that the sealing seat 1 and the valve assembly 2 are naturally placed vertically. Then, move the valve assembly 2 downward so that the connector 21 is close to the connecting cavity 11, so that the guide post 22 is engaged with the connecting cavity 11, so that the part ring 23 contacts the sealing ring 12, and so that the sealing cone angle 121 and the sealing cone surface 231 are in contact to form a cone surface seal.

[0057] S3. For sealing test, move the assembled structure to a darker place, then move the cold light source 3 to the left side of the light inlet 13 so that the light from the cold light source 3 shines into the inside of the sealing seat 1 through the light inlet 13. Then, observe whether the light beam passes through in the observation area 4. After that, rotate the valve assembly 2 so that the sealing cone surface 231 rotates on the sealing cone angle 121, thereby observing whether the light beam passes through the seal in various directions.

[0058] S4. Detection and analysis: If a beam passes through the vicinity of observation area 4, there is a sealing defect between the sealing cone angle 121 and the sealing cone surface 231. Since the valve assembly 2 is formed by grinding, the part ring 23 and the sealing cone surface 231 have the characteristics of integrity, dimensional stability and good technical conditions. Therefore, there is a processing defect on the surface of the sealing cone angle 121.

[0059] S5. Defect handling: Apply polishing paste to the surface of the sealing cone angle 121, and then use a cast iron grinder to grind the sealing cone angle 121. After grinding, clean the surface of the sealing seat 1 with alcohol and dry it with an air gun.

[0060] S6. Repeat the test. First, repeat the operation step S1 and observe whether there are any appearance defects at the sealing cone angle 121. After confirming that there are no appearance defects, repeat the operation steps S2-S4 and use the cold light source 3 to perform a light transmission test at the sealing cone angle 121. If no visible light beam passes through, it is qualified.

[0061] In summary, compared with existing technologies, it has the following beneficial effects:

[0062] The differential angle sealing structure and its sealing performance testing method, through steps such as appearance inspection, structural assembly, sealing performance testing, test analysis, defect handling, and reprocessing, utilizes the transmittance of a cold light source to perform sealing performance testing at the connection between the sealing seat 1 and the valve assembly 2. This achieves simple, stable, and efficient sealing performance testing of the differential angle sealing structure, and handles defects of individual parts during testing. After testing, zero rework of parts can be achieved, effectively improving the product's sealing test pass rate.

[0063] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0064] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A method for detecting the sealing performance of a differential angle sealing structure, characterized in that: The detected differential angle sealing structure includes a sealing seat (1) and a valve assembly (2). The sealing seat (1) is located below the valve assembly (2), and a connecting cavity (11) connected to the valve assembly (2) is provided on the sealing seat (1) near the top. The valve assembly (2) is vertically disposed above the connecting cavity (11). The valve assembly (2) is formed by grinding. The bottom end of the valve assembly (2) is provided with a connector (21) corresponding to the connecting cavity (11). A sealing ring (12) is provided at the top of the connecting cavity (11), and a sealing cone (121) is provided on the inner wall of the sealing ring (12) near the top. A light inlet (13) is provided on the left side of the sealing seat (1) and near the bottom end, and a cold light source (3) is provided on the left side of the light inlet (13). The connector (21) has guide posts (22) arranged in a ring array on its outer wall near the bottom end. The guide posts (22) are engaged with the connecting cavity (11). A component ring (23) is provided on the outer side of the connector (21) and near the top end, and a sealing cone surface (231) is provided on the outer circumferential wall of the component ring (23) and near the bottom end. An observation area (4) is provided at the sealing point between the sealing seat (1) and the valve assembly (2) for detecting light and making observations; The operating steps are as follows: S1. Visual inspection: Move the sealing seat (1) and valve assembly (2) to the stage of the binocular microscope in sequence. Observe the surface of the sealing seat (1) and valve assembly (2) under 10x magnification through the binocular microscope. It is required that there are no extraneous objects or defects in the appearance of the sealing part of the sealing seat (1) and valve assembly (2). S2. Structural assembly: Move the valve assembly (2) above the sealing seat (1) so that the sealing seat (1) and the valve assembly (2) are naturally placed vertically. Then, move the valve assembly (2) downward so that the connector (21) is close to the connecting cavity (11) so that the guide post (22) is engaged with the connecting cavity (11) so that the part ring (23) contacts the sealing ring (12) and the sealing cone angle (121) and the sealing cone surface (231) are fitted together to perform cone surface sealing. S3. For sealing test, move the assembled structure to a darker place, then move the cold light source (3) to the left side of the light inlet (13) so that the light from the cold light source (3) shines into the inside of the sealing seat (1) through the light inlet (13). Then, observe whether there is a beam of light passing through the observation area (4). After that, rotate the valve assembly (2) so that the sealing cone surface (231) rotates on the sealing cone angle (121) so that there is a beam of light passing through the sealing area in all directions. S4. Detection and analysis: If a beam passes through the vicinity of the observation area (4), there is a sealing defect between the sealing cone angle (121) and the sealing cone surface (231). Since the valve assembly (2) is formed by grinding, the part ring (23) and the sealing cone surface (231) have the characteristics of being complete, dimensionally stable and technically good. Therefore, it is determined that there is a processing defect on the surface of the sealing cone angle (121). S5. Defect handling: Apply polishing paste to the surface of the sealing cone (121), and then use a cast iron grinder to grind the sealing cone (121). After grinding, clean the surface of the sealing seat (1) with alcohol and dry it with an air gun. S6. Repeat the test. First, repeat the operation step S1 and observe whether there are any appearance defects at the sealing cone angle (121). After confirming that there are no appearance defects, repeat the operation steps S2-S4 and use the cold light source (3) to perform light transmission test at the sealing cone angle (121). If no visible light beam passes through, it is qualified.

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