A tool for detecting the cross-sectional width of a seal ring

Abstract

The utility model discloses a detection tool of sealing ring cross section width, including a fixed pipe and mandrel, the mandrel can be inserted with fixed pipe one end, the outer circumferential surface movable sleeve of mandrel has the inner taper pipe, the inner taper pipe is a gradually change diameter and inside intercommunication pipe from small to big, the diameter of mandrel and the minimum calibre of inner taper pipe are same, when the mandrel is inserted with fixed pipe one end, the fixed pipe is placed in the inner taper pipe big calibre direction inside, the fixed pipe with mandrel sleeve joint end place still is equipped with the detection placement groove, the fixed pipe outside wall is marked with the scale value between the diameter of inner taper pipe somewhere and the inside diameter of detection placement groove distance. The utility model detection step is simple and quick, can realize the detection to sealing ring all azimuth cross section width, can detect simultaneously to sealing ring one's sealing performance.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing ring testing tools, specifically a tool for testing the cross-sectional width of a sealing ring. Background Technology

[0002] Currently, a type of sealing ring called a rotary Glyd ring is widely used in machinery and equipment in industries such as pharmaceuticals, chemicals, and food and beverage. Rotary Glyd rings are composed of a PTFE slip ring and an elastomer. In some applications, the rotary Glyd rings used must achieve both reliable sealing to ensure a good seal and a sufficiently low coefficient of friction to ensure smooth operation. Therefore, the cross-sectional width of the rotary Glyd ring at various locations needs precise control; otherwise, inconsistent cross-sectional widths can lead to poor sealing and uneven rotation when in contact with the device.

[0003] In the past, calipers were generally used to measure the cross-sectional width of the rotating glyph. However, due to the different force and angles applied by each person during the measurement, the measurement results had a large deviation. If the rotating glyph was measured at various positions, it would take a long time and the accuracy could not be guaranteed.

[0004] Therefore, it is necessary to provide a convenient and rapid tool for measuring the cross-sectional width of a rotating glyph from all angles. Utility Model Content

[0005] This invention provides a tool for detecting the cross-sectional width of a sealing ring, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tool for detecting the cross-sectional width of a sealing ring includes a fixed tube and a mandrel. The mandrel can be inserted into one end of the fixed tube. An inner conical tube is movably sleeved on the outer circumference of the mandrel. The inner conical tube is a tube with a gradually changing diameter from small to large and is internally connected. The diameter of the mandrel is the same as the minimum diameter of the inner conical tube. When the mandrel is inserted into one end of the fixed tube, the fixed tube is placed inside the large diameter direction of the inner conical tube. The outer wall of the fixed tube is marked with scale values ​​at different distances corresponding to the inner conical tube. That is, the height of the scale value is the same as the overall height of the inner conical tube, and it brings different distance scale values ​​for the diameter values ​​at different positions of the inner conical tube. The scale value (12) is obtained by calculating the value of the inner conical tube (3) from large to small diameter and the inner diameter of the detection placement groove (11): scale value = (diameter of a certain point of the inner conical tube - inner diameter d of the detection placement groove (11)) / 2, that is, the width range value of the rotating glyph. A detection placement groove is also provided at the connection end between the fixed tube and the mandrel sleeve. When the sealing ring is placed in the detection placement groove, the inner wall of the inner conical tube abuts against the outer periphery of the sealing ring. The diameter of the inner conical tube gradually increases from top to bottom, while the scale reading on the fixed tube gradually increases from bottom to top. This reading represents the distance between the inner wall of the detection placement groove and the inner wall of the inner conical tube at the corresponding height position, which is the cross-sectional width of the sealing ring. When the sealing ring is in contact with the inner wall of the inner conical tube, the larger the cross-sectional width of the sealing ring, the larger the inner diameter of the inner conical tube at the contact point, and the larger the corresponding scale reading at the bottom of the inner conical tube, and vice versa.

[0008] Preferably, the lower end of the mandrel is a plug-in end, which is connected to the top of the fixed tube. A sealing groove is formed on the outer circumferential surface of the plug-in end, and a second sealing ring is provided within the sealing groove. The second sealing ring contacts and seals against the inner wall of the fixed tube. The mandrel guides the inner conical tube, ensuring its descent angle does not deviate. The second sealing ring improves the sealing performance. When the first sealing ring contacts the inner wall of the inner conical tube, a sealed space is formed between the first sealing ring, the inner conical tube, and the mandrel, which can be used to test the sealing performance of the first sealing ring.

[0009] Preferably, a handle groove is provided on the outer circumferential surface of the upper end of the inner conical tube, and a water inlet is provided at the top of the inner conical tube, and the water inlet is connected to the interior of the inner conical tube. The handle groove facilitates manual lifting of the inner conical tube by the operator. The water inlet is used to inject water into the sealed space between the sealing ring, the inner conical tube, and the mandrel, thereby testing the sealing performance of the sealing ring.

[0010] Preferably, the detection placement groove is located on the outer edge of the top of the fixed tube, and a gasket is provided at the bottom of the detection placement groove, with a sealing ring placed on the gasket.

[0011] Preferably, the first sealing ring is a rotating Glyd ring, and the gasket is a POM material gasket with two notches. POM plastic has high strength and high wear resistance, serving to protect the first sealing ring and fix the tube. The notches facilitate the removal of the first sealing ring.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention features a structure that allows an inner conical tube to be fitted onto a mandrel, enabling the inner conical tube to move up and down along the mandrel. The first sealing ring is a rotating Glyd ring. The inner diameter of the inner conical tube gradually decreases from bottom to top. The first sealing ring is placed in the detection placement groove, and the scale value on the fixed tube gradually increases from bottom to top. The scale value represents the distance between the inner wall of the detection placement groove and the inner wall of the inner conical tube at the corresponding height position. When the outer circumference of the first sealing ring contacts the inner wall of the inner conical tube, the reading of the corresponding scale value at the bottom of the inner conical tube is taken, which is the cross-sectional width of the first sealing ring. This enables the detection of the cross-sectional width of the rotating Glyd ring, and the detection process is convenient and fast.

[0014] A second sealing ring is installed between the insertion end and the inner wall of the fixed tube, so that a sealed space is formed between the first sealing ring, the inner cone tube and the mandrel. The sealing performance of the rotating glyph can be tested by injecting water into the sealed space through the water inlet. At the same time, the pressure that the sealing performance of the rotating glyph can withstand can be tested by adjusting the water volume and water pressure in the sealed space. Attached Figure Description

[0015] Figure 1 This is a side cross-sectional view of the overall structure of this utility model;

[0016] Figure 2 This is a side view of the fixing tube of this utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the inner conical tube of this utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the mandrel of this utility model;

[0019] Figure 5 This is a schematic diagram of the washer structure of this utility model;

[0020] 1. Fixed tube; 11. Detection placement groove; 12. Scale value; 13. Sealing ring one; 14. Washer; 15. Notch; 2. Mandrel; 21. Insertion end; 22. Sealing groove; 23. Sealing ring two; 3. Inner conical tube; 32. Handle groove; 33. Water inlet. Detailed Implementation

[0021] 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.

[0022] Reference Figure 1-5 A tool for detecting the cross-sectional width of a sealing ring includes a fixed tube 1 and a mandrel 2. The mandrel 2 can be inserted into one end of the fixed tube 1. An inner conical tube 3 is movably sleeved on the outer circumference of the mandrel 2. The inner conical tube 3 is a tube with a gradually changing diameter from small to large and is internally connected. The diameter of the mandrel 2 is the same as the minimum diameter of the inner conical tube 3. When the mandrel 2 is inserted into one end of the fixed tube 1, the fixed tube 1 is placed inside the large diameter direction of the inner conical tube 3. The outer wall of the fixed tube is marked with scale values ​​at different distances corresponding to the inner conical tube. That is, the height of the scale value is the same as the overall height of the inner conical tube, and it brings different distance scale values ​​for the diameter values ​​at different positions of the inner conical tube. The scale value 12 is obtained by calculating the value of the inner conical tube (3) diameter from large to small and the inner diameter of the detection placement groove (11): scale value = (diameter of a certain point of the inner conical tube - inner diameter d of the detection placement groove (11)) / 2, that is, the width range value of the rotating glyph.

[0023] A detection placement groove 11 is also provided at the connection end between the fixed tube 1 and the mandrel 2. When the sealing ring 13 is placed in the detection placement groove 11, the inner wall of the inner conical tube 3 abuts against the outer periphery of the sealing ring 13. The diameter of the inner conical tube 3 gradually increases from top to bottom, and the reading of the scale value 12 gradually increases from bottom to top. This reading is the distance between the inner side wall of the detection placement groove 11 and the inner wall of the inner conical tube 3 at the corresponding height position, which is the cross-sectional width of the sealing ring 13. When the sealing ring 13 is in contact with the inner wall of the inner conical tube 3, the larger the cross-sectional width of the sealing ring 13, the larger the inner diameter of the inner conical tube 3 at the contact position, and the larger the corresponding scale value 12 reading at the bottom of the inner conical tube 3, and vice versa.

[0024] The lower end of the mandrel 2 is a plug-in end 21, which is inserted into the top of the fixed tube 1. A sealing groove 22 is formed on the outer circumferential surface of the plug-in end 21, and a second sealing ring 23 is provided within the sealing groove 22. The second sealing ring 23 contacts and seals against the inner wall of the fixed tube 1. The mandrel 2 guides the inner conical tube 3, ensuring its descent angle does not deviate. The second sealing ring 23 improves the sealing performance. When the first sealing ring 13 contacts the inner wall of the inner conical tube 3, a sealed space is formed between the first sealing ring 13, the inner conical tube 3, and the mandrel 2, which can be used to test the sealing performance of the first sealing ring 13.

[0025] A handle groove 32 is provided on the outer circumferential surface of the upper end of the inner conical tube 3, and a water inlet 33 is provided on the top of the inner conical tube 3, and the water inlet 33 is connected to the interior of the inner conical tube 3. The handle groove 32 facilitates manual lifting of the inner conical tube 3 by the operator. The water inlet 33 is used to inject water into the sealed space between the sealing ring 13, the inner conical tube 3 and the mandrel 2, thereby testing the sealing performance of the sealing ring 13.

[0026] The detection placement groove 11 is opened at the outer edge of the top of the fixed tube 1. A gasket 14 is provided at the bottom of the detection placement groove 11, and a sealing ring 13 is placed on the gasket 14.

[0027] The sealing ring 13 is a rotating Glyd ring, and the washer 14 is a POM material gasket with two notches 15. POM plastic has high strength and high wear resistance, serving to protect the sealing ring 13 and the fixing tube 1. The notches 15 facilitate the removal of the sealing ring 13.

[0028] In use, the sealing ring 13 with the inner diameter to be tested is placed on the washer 14. The inner conical tube 3 is then fitted onto the mandrel 2, and the inner conical tube 3 is gradually moved downwards along the mandrel 2 until its inner wall contacts the sealing ring 13. Since the scale value 12 represents the distance between the inner wall of the testing groove 11 and the inner wall of the corresponding inner conical tube 3, the reading of the corresponding scale value 12 at the bottom of the inner conical tube 3 is taken, which is the cross-sectional width of the sealing ring 13. Water is then injected into the sealed space between the sealing ring 13, the inner conical tube 3, and the mandrel 2 through the water inlet 33, thus enabling the testing of the sealing performance of the sealing ring 13.

[0029] A method for detecting rotating Glyphs based on the above structure is described in detail below:

[0030] (1) Detection of the cross-sectional width of the rotating Glyph:

[0031] 1) Place the fixed tube 1 vertically, place the rotating Gladius ring to be tested on the washer 14 on the fixed tube 1, and insert the mandrel 2 into one end of the fixed tube 1.

[0032] 2) Next, attach the inner conical tube 3 to the mandrel 2, and place the fixed tube 1 with the rotating glyph inside the large diameter direction of the inner conical tube 3, that is, in the form of a reverse cap at the opening of the inner conical tube 3. Since the rotating glyph has a certain width, the inner diameter position of the inner wall of the inner conical tube is in contact with the outer periphery of the rotating glyph. Read the corresponding scale value on the fixed tube 1 at the edge of the largest diameter of the inner conical tube to obtain the cross-sectional width value of the rotating glyph.

[0033] Furthermore, the rotating glyphs with different values ​​are classified. In addition, if a range of values ​​is set as acceptable, if the value read corresponding to the maximum diameter of the inner tapered tube is not within the range, the cross-sectional width of the rotating glyph is determined to be unacceptable. If it is within the range, the cross-sectional width is acceptable.

[0034] (2) It also includes the test of the sealing performance of the rotating glyph: water is injected into the sealed space formed between the rotating glyph, the inner cone tube and the mandrel through the water injection port. After a period of time, if water flows out or seeps out, it is determined that the sealing performance of the rotating glyph is not good. If not, it is determined that the sealing performance is qualified.

[0035] Furthermore, the pressure that the rotating glyph can withstand to ensure its seal can be tested by adjusting the amount and pressure of water injected into the sealed space.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tool for detecting the cross-sectional width of a sealing ring, characterized in that, It includes a fixed tube (1) and a mandrel (2). The mandrel (2) can be inserted into one end of the fixed tube (1). An inner conical tube (3) is movably sleeved on the outer circumference of the mandrel (2). The inner conical tube (3) is a tube with a gradually changing diameter from small to large and is internally connected. The diameter of the mandrel (2) is the same as the minimum diameter of the inner conical tube (3). When the mandrel (2) is inserted into one end of the fixed tube (1), the fixed tube (1) is placed in the direction of the large diameter of the inner conical tube (3). The outer wall of the fixed tube (1) is marked with a scale value (12) indicating the distance between the outer wall of the fixed tube (1) and the inner wall of the inner conical tube (3). The end of the fixed tube (1) that is sleeved with the mandrel (2) is also provided with a detection placement groove (11).

2. The tool for detecting the cross-sectional width of a sealing ring according to claim 1, characterized in that, The lower end of the mandrel (2) is a plug-in end (21). The mandrel (2) is plugged into the top of the fixed tube (1) through the plug-in end (21). A sealing groove (22) is provided on the outer circumferential surface of the plug-in end (21). A sealing ring (23) is provided in the sealing groove (22). The sealing ring (23) contacts and seals with the inner wall of the fixed tube (1).

3. The tool for detecting the cross-sectional width of the sealing ring according to claim 2, characterized in that, The outer circumferential surface of the upper end of the inner conical tube (3) is provided with a handle groove (32), and a water inlet (33) is provided at the top of the inner conical tube (3), and the water inlet (33) is connected to the inside of the inner conical tube (3).

4. The tool for detecting the cross-sectional width of the sealing ring according to claim 3, characterized in that, The detection placement groove (11) is opened on the outer edge of the top of the fixed tube (1). The inner diameter of the detection placement groove (11) is equal to the nominal rotation axis d of the rotating glyph being tested. A washer (14) is provided at the bottom of the detection placement groove (11), and a sealing ring (13) is placed on the washer (14).

5. The tool for detecting the cross-sectional width of the sealing ring according to claim 4, characterized in that, The sealing ring (13) is a rotating glyph, and the gasket (14) is a POM gasket with two notches (15).

6. The tool for detecting the cross-sectional width of a sealing ring according to claim 4, characterized in that, The scale value (12) is a value obtained by calculating the inner diameter of the inner conical tube (3) from large to small and the inner diameter of the detection placement groove (11): scale value = (diameter of a certain point of the inner conical tube - inner diameter d of the detection placement groove (11)) / 2, that is, the width range of the rotating glyph.

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