Testing device for compression permanent deformation rate of O-shaped elastic sealing ring

Abstract

The utility model discloses an O-shaped elastic sealing ring compression permanent deformation rate testing device, which belongs to the technical field of deformation rate testing and comprises a base, a compression groove and a measuring groove are processed at the top of the base, a testing clamp for placing a sealing ring for testing is arranged in the compression groove, and the testing clamp comprises a bottom plate. A positioning column is fixedly arranged in the center of the top of the bottom plate and sleeved with a pressing plate, a downward pressing mechanism is arranged above the pressing plate, a rotating table is arranged in the measuring groove, a groove matched with the bottom plate is machined in the top of the rotating table, and a measuring mechanism is arranged between the compression groove and the measuring groove. According to the utility model, the sealing ring is compressed by the test fixture, the thickness of the sealing ring is measured by the measuring mechanism to calculate the compression permanent deformation rate, the structure is simple, the operation is very fast, and the test fixture and the base are detachable, so that the test fixture and the base can be conveniently and rapidly replaced by a worker, and a plurality of sealing rings can be tested at one time, thereby improving the working efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of deformation rate test belongs to a kind of O type elastic packing ring compression permanent deformation rate test device. BACKGROUND

[0002] O type elastic packing ring is abbreviated as O ring, it is a kind of rubber ring with circular section, simple structure, mainly made of elastomer material.O type elastic packing ring, rely on the elastic deformation of sealing element when using, contact pressure is caused on sealing contact surface, if contact pressure is greater than the internal pressure of sealed medium, then no leakage occurs, otherwise leakage occurs.Compression permanent deformation rate is an important index to measure the ability of sealing ring to maintain sealing performance under long-term compression state.If deformation rate is too large, the sealing ring can not maintain good sealing effect during use, resulting in leakage, affecting the normal operation of equipment.And the compression permanent deformation rate obtained by test can help predict the service life of O type elastic packing ring.

[0003] The existing compression permanent deformation rate test device is generally compressed by using extrusion structure to test the sealing ring.For example, the prior art with publication number CN218765987U discloses a special tool for radial rubber seal ring accelerated aging test.

[0004] However, the above prior art has the following problems when in use: the test is carried out by extruding the sealing ring, the compression permanent deformation rate data of the sealing ring cannot be obtained, so that the test result cannot accurately reflect the deformation rate of the sealing ring, resulting in low convincing power of the test result. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a kind of O type elastic packing ring compression permanent deformation rate test device to solve the problem that the test result cannot accurately reflect the deformation rate of the sealing ring in prior art by using extrusion method, resulting in low convincing power of the test result.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] A kind of O type elastic packing ring compression permanent deformation rate test device, including base, the base top is processed with compression groove and measurement groove, the compression groove is equipped with the test fixture for placing sealing ring to test inside, the test fixture includes bottom plate, the bottom plate top center is fixed with positioning column, positioning column is equipped with pressing plate, the pressing plate is equipped with lower pressing mechanism above, the measurement groove is equipped with rotating table inside, the rotating table top is processed with the recess that is compatible with bottom plate, the compression groove is equipped with measurement mechanism between measurement groove, for measuring the thickness of sealing ring.

[0008] Further, the pressing mechanism comprises an electric push rod fixed on the top of the base through a support plate, and a pressure head is fixed at the bottom end of the piston rod of the electric push rod.

[0009] Further, the measuring mechanism comprises a column, a measuring plate is sleeved on the outer wall of the column, and a scale is embedded on the front end surface of the column, so that the thickness of the sealing ring can be quickly measured by means of the scale and the measuring plate.

[0010] Further, the measuring groove is provided with a mounting groove at the bottom, and a motor for driving the rotation of the rotating table is detachably installed in the mounting groove, so that the rotating table can be driven by the motor without manual operation, thereby improving the test efficiency.

[0011] Further, the base is provided with heat dissipation holes communicated with the mounting grooves on the outer walls of the front and rear sides, and a plurality of uniformly distributed fixing holes are formed on the top of the base, so that the base can be installed on a plane by using bolts passing through the fixing holes, thereby improving the stability of the base.

[0012] Further, the positioning column is provided with a circular groove at the top, a pull ring is fixed in the circular groove, a plurality of limit grooves are arranged in an annular array on the outer wall surface of the positioning column, a plurality of limit blocks are fixed on the inner wall of the pressing plate, and the limit blocks are slidably arranged in the limit grooves, so that the pressing plate can be stably lifted by means of the limit blocks and the limit grooves.

[0013] Further, the pressing plate and the measuring plate are both provided with a plurality of pull rods fixed at the top, and the pull rods can be easily adjusted by workers.

[0014] Further, the bottom plate is provided with a positioning groove matched with the positioning column at the bottom, and a U-shaped limiting plate is fixed on the top of the base and located on one side of the support plate, so that a plurality of test clamps can be placed in the U-shaped limiting plate, and workers can quickly take the test clamps, thereby improving the test efficiency.

[0015] The utility model has the advantages of:

[0016] 1、the utility model discloses a test clamp for compressing sealing rings, and the initial thickness, compressed thickness and thickness after high-temperature and low-temperature treatment of the sealing rings are measured by a measuring mechanism, so that the compression permanent deformation rate of the sealing rings can be obtained, the structure is simple, and the operation is very fast, and the test clamp and the base can be separated, so that workers can quickly replace the test clamp, a plurality of sealing rings can be tested at a time, and the working efficiency is improved.

[0017] 2. The automatic driving of the compression plate by the electric push rod and the pressure head can improve the test efficiency, and the motor driven rotating table can rotate, so that the staff can quickly measure the thickness of the sealing ring at different positions, thereby improving the persuasiveness of the test data. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other implementation drawings can be obtained without creative labor on the basis of the provided drawings.

[0019] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that the present application can produce, should still fall within the scope of the technical content disclosed by the present application.

[0020] Figure 1 The overall structure schematic diagram provided by the present application is shown in the figure;

[0021] Figure 2 The compression state schematic diagram provided by the present application is shown in the figure;

[0022] Figure 3 The measurement state schematic diagram provided by the present application is shown in the figure;

[0023] Figure 4 The base partial sectional view provided by the present application is shown in the figure;

[0024] Figure 5 The test fixture structure schematic diagram provided by the present application is shown in the figure;

[0025] Figure 6 The test fixture front view provided by the present application is shown in the figure;

[0026] Figure 7 The bottom plate bottom view provided by the present application is shown in the figure.

[0027] In the figure: 1, base; 2, compression groove; 3, measurement groove; 4, test fixture; 5, lower pressing mechanism; 6, rotating table; 7, groove; 8, measurement mechanism; 9, mounting groove; 10, motor; 11, heat dissipation hole; 12, fixing hole; 13, circular groove; 14, pull ring; 15, limiting groove; 16, limiting block; 17, lever; 18, positioning groove; 19, U-shaped limiting plate;

[0028] 401, bottom plate; 402, positioning column; 403, pressing plate;

[0029] 501, electric push rod; 502, support plate; 503, pressing head;

[0030] 801, column; 802, measuring plate; 803, scale. DETAILED DESCRIPTION

[0031] The embodiments of the present application will be described in detail with specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. Obviously, the described embodiments are part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0032] Referring to the drawings accompanying the specification Figures 1-7 The utility model provides a kind of O type elastic sealing ring compression permanent deformation rate test device, including base 1, base 1 top is processed with compression groove 2 and measurement groove 3, compression groove 2 inside is equipped with the test fixture 4 for placing sealing ring to test, test fixture 4 includes bottom plate 401, bottom plate 401 top center is fixed with positioning column 402, positioning column 402 is equipped with pressing plate 403, pressing plate 403 top is equipped with lower pressure mechanism 5, specifically, the lower pressure mechanism 5 includes electric push rod 501, electric push rod 501 is fixed in the top of base 1 by support plate 502, the piston rod bottom end of electric push rod 501 is fixed with pressing head 503, pressing head 503 is driven to press sealing ring and compress by pressing plate 403 descending.

[0033] Measurement groove 3 inside is equipped with rotary table 6, rotary table 6 top is processed with the recess 7 compatible with bottom plate 401, for improving the stability of bottom plate 401.

[0034] Compression groove 2 and measurement groove 3 are equipped with measuring mechanism 8 between, for measuring the thickness of sealing ring, specifically, the measuring mechanism 8 includes column 801, column 801 outer wall is equipped with measuring plate 802, column 801 front end surface is fixedly embedded with scale 803, by the cooperation of scale 803 and measuring plate 802, the thickness of sealing ring can be quickly measured.

[0035] In actual use, the worker first takes out a test fixture 4 and places it in the compression groove 2 on the base 1, then takes out the pressing plate 403 on the bottom plate 401, places the sealing ring to be detected, rotates the measuring plate 802 and contacts the top of the sealing ring, then checks and records the data on the scale 803, that is, the thickness of the sealing ring. After measurement, the pressing plate 403 is re-sleeved on the positioning column 402, and the piston rod of the electric push rod 501 in the pressing mechanism 5 is elongated, and the pressing head 503 is used to press the pressing plate 403, so that the sealing ring between the pressing plate 403 and the bottom plate 401 is compressed, and the pressing plate 403 is fixed by using the bolt. At this time, the bottom of the measuring plate 802 is flush with the bottom of the pressing plate 403, and the thickness of the compressed sealing ring is measured, so that the sealing ring remains in a compressed state. After the high-temperature and low-temperature tests are completed, the worker takes out the test fixture 4 and places it in the rotating table 6 on the measuring groove 3, and uses the measuring plate 802 and the scale 803 in the measuring mechanism 8 to measure the thickness of the sealing ring. The worker calculates the compression permanent deformation rate of the sealing ring by measuring the value.

[0036] In this embodiment, a circular groove 13 is formed at the top end of the positioning column 402, and a pull ring 14 is fixedly arranged in the circular groove 13. A plurality of limiting grooves 15 are arranged in an annular array on the outer wall surface of the positioning column 402. A plurality of limiting blocks 16 are fixedly arranged on the inner wall of the pressing plate 403, and the limiting blocks 16 are slidably arranged in the limiting grooves 15. By means of the limiting blocks 16 and the limiting grooves 15, the pressing plate 403 can be stably lifted.

[0037] In this embodiment, a plurality of pull rods 17 are fixedly arranged on the top of the pressing plate 403 and the top of the measuring plate 802. The worker can adjust the positions of the pressing plate 403 and the measuring plate 802 more easily by holding the pull rods 17.

[0038] Referring to the drawings Figure 4 The bottom of the measuring groove 3 is provided with a mounting groove 9, and a motor 10 for driving the rotating table 6 to rotate is detachably mounted in the mounting groove 9. The outer walls of the front and rear sides of the base 1 are both provided with heat dissipation holes 11 communicating with the mounting groove 9. The top of the base 1 is provided with a plurality of evenly distributed fixing holes 12.

[0039] The rotation of the rotating table 6 is driven by the motor 10, which facilitates the staff to quickly measure the thickness of the sealing ring at different positions, thereby improving the persuasiveness of the test data. For example, when measuring the initial thickness, the compressed thickness, and the thickness after high-temperature and low-temperature treatment of the sealing ring, the thickness of the sealing ring at multiple positions is marked and recorded, and then different data is obtained by calculation. The heat dissipation hole 11 can be used for heat dissipation of the motor 10, and the fixing hole 12 is used for the staff to firmly fix the base 1 on a plane for test operation.

[0040] Moreover, as shown in Figure 1 and Figure 7 A positioning groove 18 matched with the positioning column 402 is processed at the bottom of the bottom plate 401, and a U-shaped limiting plate 19 is fixed at the top of the base 1, and the U-shaped limiting plate 19 is arranged on one side of the supporting plate 502, and a plurality of test clamps 4 are placed together inside the U-shaped limiting plate 19, so as to improve the test efficiency.

[0041] Although the utility model has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model all belong to the scope of protection required by the utility model.

Claims

1. A device for testing the compression set of an O-ring, comprising a base (1), characterised in that: The base (1) top processing has compression groove (2) and measuring groove (3), the compression groove (2) inside is equipped with the test fixture (4) for placing the sealing ring to carry out test; The test fixture (4) includes a bottom plate (401), the bottom plate (401) top center is fixedly provided with a positioning column (402), the positioning column (402) is sleeved with a pressing plate (403), and a pressing mechanism (5) is arranged above the pressing plate (403); The measuring groove (3) is internally provided with a rotating table (6), the rotating table (6) top is processed with a groove (7) matched with the bottom plate (401), and a measuring mechanism (8) is arranged between the compression groove (2) and the measuring groove (3) for measuring the thickness of the sealing ring.

2. The O-ring compression set test apparatus of claim 1, wherein: The pressing mechanism (5) includes an electric push rod (501), the electric push rod (501) is fixed on the top of the base (1) through a support plate (502), the piston rod bottom end of the electric push rod (501) is fixedly provided with a pressure head (503), and the pressure head (503) is driven to press the sealing ring for compression by moving downwardly pressing the pressing plate (403).

3. The O-ring compression set test apparatus of claim 1, wherein: The measuring mechanism (8) includes a stand column (801), the stand column (801) is sleeved with a measuring plate (802), and a scale (803) is fixedly embedded on the front end surface of the stand column (801).

4. The O-ring compression set test apparatus of claim 1, wherein: The measuring groove (3) bottom is provided with a mounting groove (9), and a motor (10) for driving the rotating table (6) to rotate is detachably mounted in the mounting groove (9).

5. The O-ring compression set test apparatus of claim 4, wherein: The base (1) front and rear outer walls are both processed with heat dissipation holes (11) communicated with the mounting groove (9), and the top of the base (1) is processed with a plurality of evenly distributed fixing holes (12) on the front and rear sides.

6. The O-ring compression set test apparatus of claim 1, wherein: The positioning column (402) top end is provided with a circular groove (13), the circular groove (13) is fixedly provided with a pull ring (14), the outer wall surface of the positioning column (402) is processed with a plurality of annularly arranged limiting grooves (15), the inner wall of the pressing plate (403) is fixedly provided with a plurality of limiting blocks (16) same as the limiting grooves (15), and the limiting blocks (16) are slidably arranged in the limiting grooves (15).

7. The compression set test apparatus for O-rings of claim 3, wherein: The pressing plate (403) top and the measuring plate (802) top are both fixedly provided with a plurality of pull rods (17).

8. The compression set test apparatus for O-rings according to claim 3, wherein: The bottom plate (401) bottom is processed with a positioning groove (18) matched with the positioning column (402), and the top of the base (1) is fixedly provided with a shaped limiting plate (19), which is arranged on one side of the support plate (502).

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