Rubber sealing ring air tightness detection device

Abstract

The utility model relates to the technical field of air tightness detection, in particular to a rubber sealing ring air tightness detection device, which comprises a bottom plate and the like. The bottom plate is a mounting carrier of the detection device, the shell is fixedly connected to the bottom plate, the cover plate is mounted at a top opening of the shell, the blanking barrel is mounted at the middle upper part of the shell through a support plate, and a discharge port is formed in one side of the bottom of the blanking barrel; the testing barrel is arranged at the bottom in the shell, and an annular bulge is arranged at the upper part of the inner wall of the discharging barrel. According to the utility model, the descending pressure of the pressure cover can be accurately controlled through the electric push rod, consistent pressure is ensured to be applied to each sealing ring, a low-pressure environment is created by using the vacuum pump, whether the sealing ring leaks or not can be quickly and effectively tested, and the change of air pressure in the shell can be accurately monitored by using the pressure gauge; therefore, the airtight performance of the sealing ring can be judged more accurately.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection, in particular to an air tightness detection device for a rubber sealing ring. Background Art

[0002] In industrial production and daily life, rubber sealing rings are widely used in various mechanical equipment, piping systems, automotive parts, etc. to prevent gas or liquid leakage. Ensuring good airtightness of the sealing ring is crucial to maintaining normal equipment operation, improving safety and extending service life. However, due to factors such as material defects, dimensional deviations or improper installation during the manufacturing process, the sealing ring may have tiny leakage paths, thereby affecting its sealing effect. Therefore, it is very necessary to conduct strict airtightness testing before the sealing ring is put into use.

[0003] Chinese utility model patent CN215178593U provides a rubber sealing ring air tightness detection device, including a base, a mounting tube, a detection tube, a sealing cover, a sealing ring to be detected, a pressing device and an inflation device; the detection tube is installed on the upper end surface of the base. The above patent discloses a rubber sealing ring air tightness detection scheme, in which pressure is applied to the liquid in the detection tube by the pressing device, and the leakage rate of the sealing ring is quantitatively detected by the gas detection sensor. However, since the sensor is only installed in a specific position and can detect leakage near it, the sensor may not be able to accurately capture small leaks far away from the sensor position, which may affect the final leakage measurement data. Therefore, we have designed a rubber sealing ring air tightness detection device to achieve the effect of effectively and accurately detecting the air tightness of the rubber sealing ring. Utility Model Content

[0004] In order to overcome the disadvantage of the prior art that when detecting air tightness through a gas detection sensor, the detection data is easily affected by the specific position of the sensor, a rubber sealing ring air tightness detection device is provided.

[0005] The technical solution is: a rubber sealing ring air tightness detection device, including a base plate, an outer shell and a cover plate, the base plate is a mounting carrier of the detection device, the outer shell is fixedly connected to the base plate, and the cover plate is installed at the top opening of the outer shell, and also includes: a discharge barrel, which is installed on the upper middle part of the outer shell through a support plate, and a discharge port is provided on one side of the bottom of the discharge barrel; a test barrel, which is arranged at the bottom inner part of the outer shell, and an annular protrusion is provided on the upper inner wall of the discharge barrel, and the test barrel is close to the discharge port of the discharge barrel, and the test barrel is used to test the sealing ring; an electric push rod, which is installed on the inner side of the cover plate, and the electric push rod is located directly above the test barrel; a pressure cover, which is installed at the push rod end of the electric push rod, and the extrusion of the pressure cover The pressure surface is consistent with the inner diameter of the test cylinder; a pressure gauge passes through and is installed on the side wall of the shell, and the pressure gauge is used to detect the air pressure change in the shell; a vacuum pump is installed on the top of the cover plate, and the vacuum pump is used to extract the gas in the shell and create low-pressure test conditions; a pop-up member is arranged inside the test cylinder, and the pop-up member is used to provide elastic force for the test sealing ring to reset upward, and cooperate with the electric push rod to push the pressure cover downward so that the sealing ring contacts and fits on the top of the test cylinder, and then use the vacuum pump to extract the air between the shell and the test cylinder, turn off the vacuum pump and then use the electric push rod to push the sealing ring down through the pressure cover, so that the sealing ring squeezes the air in the test cylinder downward, and then observe whether the data on the pressure gauge changes, so as to know the air tightness of the sealing ring.

[0006] As a further preferred solution, sealing strips are provided at the joints between the top of the shell and the bottom of the cover plate, so that the shell can be kept sealed after the cover plate covers the shell.

[0007] As a further preferred solution, the pressure cover is a circular bucket-shaped structure, and vents are evenly opened on the cover body of the pressure cover.

[0008] As a further preferred solution, a collection chamber is sealed and connected on the side wall of the housing close to the test cylinder. The collection chamber is used to collect the sealing ring after testing. A baffle is installed on one side of the collection chamber, and the baffle is sealed and clamped with the collection chamber.

[0009] As a further preferred solution, the shell and the collection chamber are both made of transparent materials, which makes it easy for the inspector to observe the inspection situation inside the shell and the collection situation in the collection chamber from the outside.

[0010] As a further preferred solution, the pop-up member includes a telescopic rod, a push plate and a spring, the telescopic rod is installed at the bottom of the test cylinder, the push plate is slidably connected to the top of the test cylinder, the push plate and the telescopic rod are connected, and a spring is provided on the telescopic rod between the test cylinder and the push plate.

[0011] As a further preferred solution, the following sliding arrangement is provided in the discharge barrel: a push block, a slide groove is provided on the bottom plate of the discharge barrel, the push block is slidably installed on the bottom plate of the discharge barrel through the slide groove, and the push block is used to push the sealing ring of the discharge barrel to the test barrel for testing; a motor is installed on one side of the inner wall of the outer shell; a screw rod is rotatably installed between the test barrel and the outer shell, the screw rod is connected to the output shaft of the motor, and the screw rod and the push block are threadedly connected.

[0012] As a further preferred solution, the push block is a right-angled trapezoidal wedge block, and the right-angle side of the push block is equal to the thickness of the sealing ring.

[0013] The utility model has the following advantages: 1. The utility model can accurately control the pressure of the pressure cover through the electric push rod, ensuring that consistent pressure is applied to each sealing ring, and using a vacuum pump to create a low-pressure environment, it can quickly and effectively test whether there is a leak in the sealing ring. The pressure gauge can accurately monitor the air pressure changes in the shell, thereby more accurately judging the airtightness performance of the sealing ring.

[0014] 2. The utility model can automatically push the material from the discharge barrel to the test barrel for testing by driving the push block with a motor. The position design between the discharge barrel and the test barrel enables the sealing ring to be smoothly pushed to the test position. The pop-up piece provided inside the test barrel can also help the sealing ring to automatically reset after the test, facilitating subsequent processing.

[0015] 3. The utility model can also adjust the stroke of the electric push rod or replace the pressure covers of different specifications. The device can be suitable for the air tightness test needs of sealing rings of various sizes and models, thereby increasing its application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0017] Figure 2 It is a three-dimensional structural sectional view of the shell and the collecting chamber of the utility model.

[0018] Figure 3 It is a three-dimensional structural sectional view of the shell, collecting chamber and discharge barrel of the utility model.

[0019] Figure 4 It is a three-dimensional structural diagram of the push block, motor, screw rod and telescopic rod components of the utility model.

[0020] Among them: 1- bottom plate, 2- shell, 21- collection chamber, 22- baffle, 3- cover plate, 31- unloading barrel, 4- testing barrel, 5- electric push rod, 6- pressure cover, 7- sealing ring, 8- pressure gauge, 9- vacuum pump, 10- push block, 11- motor, 12- screw rod, 13- telescopic rod, 14- push plate, 15- spring. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to specific embodiments. It should be noted that, unless otherwise specified or limited, terms such as "dispose," "install," "connect," and "connect" should be understood in a broad sense. For example, "connect" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; or it may refer to internal communication between two components. A person skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0022] Embodiment: A rubber sealing ring airtightness detection device, such as Figure 1-Figure 3 As shown, it includes a base plate 1, a shell 2 and a cover plate 3. The base plate 1 is a mounting carrier for the detection device, the shell 2 is fixed to the base plate 1, and the cover plate 3 is installed at the top opening of the shell 2. It also includes: a discharge barrel 31, which is installed on the upper middle part of the shell 2 through a support plate, and a discharge port is provided on one side of the bottom of the discharge barrel 31; a test barrel 4, which is arranged at the bottom of the shell 2, and an annular protrusion is provided on the upper part of the inner wall of the discharge barrel 31. The test barrel 4 is close to the discharge port of the discharge barrel 31, and the test barrel 4 is used to test the sealing ring 7; an electric push rod 5, which is installed on the inner side of the cover plate 3, and the electric push rod 5 is located directly above the test barrel 4; a pressure cover 6, which is installed on the push rod end of the electric push rod 5, and the extrusion surface of the pressure cover 6 is consistent with the inner diameter of the test barrel 4; a pressure gauge 8, The pressure gauge 8 penetrates and is installed on the side wall of the shell 2, and is used to detect the air pressure change in the shell 2; the vacuum pump 9 is installed on the top of the cover plate 3, and is used to extract the gas in the shell 2 and create low-pressure test conditions; the pop-up member is arranged inside the test cylinder 4, and is used to provide elastic force for the test sealing ring 7 to reset upward, and cooperate with the electric push rod 5 to push the pressure cover 6 downward, so that the sealing ring 7 contacts and fits the top of the test cylinder 4, and then the vacuum pump 9 is used to extract the air between the shell 2 and the test cylinder 4, and then the vacuum pump 9 is turned off and the electric push rod 5 is used to push the sealing ring 7 down through the pressure cover 6, so that the sealing ring 7 squeezes the air in the test cylinder 4 downward, and then observe whether the data on the pressure gauge 8 changes, so as to know the air tightness of the sealing ring 7.

[0023] like Figure 1 and Figure 2As shown, the top of the shell 2 and the bottom of the cover 3 are both provided with sealing strips. After the cover 3 covers the shell 2, the shell 2 can be kept sealed. The pressure cover 6 is a circular bucket-shaped structure. Ventilation holes are evenly opened on the cover body of the pressure cover 6. The side wall of the shell 2 close to the test tube 4 is sealed and connected with a collection chamber 21. The collection chamber 21 is used to collect the sealing ring 7 after the test. A baffle 22 is installed on one side of the collection chamber 21. The baffle 22 and the collection chamber 21 are sealed and snapped together. The shell 2 and the collection chamber 21 are both made of transparent materials, which is convenient for the test personnel to observe the test situation in the shell 2 and the collection situation in the collection chamber 21 from the outside.

[0024] like Figure 4 As shown, the pop-up member includes a telescopic rod 13, a push plate 14 and a spring 15. The telescopic rod 13 is installed at the bottom of the test cylinder 4, and the push plate 14 is slidably connected to the top of the test cylinder 4. The push plate 14 and the telescopic rod 13 are connected. A spring 15 is provided on the telescopic rod 13 between the test cylinder 4 and the push plate 14.

[0025] like Figure 3 and Figure 4 As shown, the following sliding arrangements are provided in the discharge barrel 31: a push block 10, a slide groove is provided on the bottom plate 1 of the discharge barrel 31, and the push block 10 is slidably installed on the bottom plate 1 of the discharge barrel 31 through the slide groove, and the push block 10 is used to push the sealing ring 7 of the discharge barrel 31 to the test barrel 4 for testing; a motor 11 is installed on one side of the inner wall of the outer shell 2; a screw rod 12 is rotatably installed between the test barrel 4 and the outer shell 2, the screw rod 12 is connected to the output shaft of the motor 11, and the screw rod 12 is threadedly connected to the push block 10; the push block 10 is a right-angled trapezoidal wedge block, and the right-angle side of the push block 10 is equal to the thickness of the sealing ring 7.

[0026] When using this device to test the air tightness of the rubber sealing gasket, first open the cover plate 3 from the shell 2, the cover plate 3 will drive the electric push rod 5 and the pressure cover 6 to be lifted from the shell 2, and then the rubber sealing ring 7 to be tested is placed into the discharge barrel 31 in sequence, and then the cover plate 3 is returned to the top of the shell 2. At this time, the interior of the shell 2 is a sealed space, and then the motor 11 is enabled. The output shaft of the motor 11 drives the screw rod 12 to rotate. The rotating screw rod 12 will thread-drive the push block 10 to move along the bottom plate 1 slide groove of the discharge barrel 31. The moving push block 10 will push out a piece of rubber sealing ring 7 to be tested from the bottom of the discharge barrel 31, and push the sealing ring 7 to move toward the discharge port. When the sealing ring 7 reaches the discharge port of the discharge barrel 31, it will naturally fall into the top of the test barrel 4 below. At this time, the top inclined surface of the push block 10 will prevent the next sealing gasket in the discharge barrel 31 from falling downward. After the sealing ring 7 falls into the test barrel 4, the spring 15 in the pop-up member acts on the telescopic rod 13 and the push plate 14, so that the push plate 14 can slightly support the sealing ring 7, ensuring that it is in the correct position and providing sufficient support force for subsequent tests. Then the electric push rod 5 is activated, and the push rod of the electric push rod 5 pushes the pressure cover 6 downward, so that the pressure cover 6 is squeezed on the rubber ring on the push plate 14. As the pressure cover 6 presses the rubber ring down and fits tightly on the top of the test barrel 4, The rubber ring seals and separates the air between the test tube 4 and the housing 2, and then the vacuum pump 9 is activated. The vacuum pump 9 will gradually extract the gas in the housing 2 to the outside. When the air pressure in the housing 2 becomes negative, the vacuum pump 9 is turned off. At the same time, the pressure gauge 8 is used to detect whether the air pressure in the housing 2 changes again. If the air pressure in the housing 2 still changes after the vacuum pump 9 is turned off, it means that the sealing gasket on the test tube 4 is leaking. If the air pressure in the housing 2 does not change after the vacuum pump 9 is turned off, it means that the sealing gasket on the test tube 4 is airtight. At the same time, the tester can record the airtightness of the current sealing ring 7. After the sealing ring 7 test is completed, the electric push rod 5 drives the pressure gauge 8 to check whether the air pressure in the housing 2 changes again. The cover 6 is reset upward, and the tested sealing ring 7 is pushed upward under the action of the spring 15, and then the motor 11 is enabled to reverse and drive the push block 10 to reset, and the next sealing ring 7 falls onto the bottom plate 1 of the discharge barrel 31. Similarly, when the motor 11 drives the push block 10 to push the next sealing ring 7 from the discharge barrel 31 to the test barrel 4, the pushed out sealing ring 7 pushes the tested sealing ring 7 from the test barrel 4 into the collection chamber 21 for collection. In this reciprocating manner, the sealing performance of the rubber rings in the discharge barrel 31 can be tested in turn, and the tested rubber rings will fall into the collection chamber 21. The inspector opens the baffle 22 and takes out the tested sealing rings 7 in batches.

[0027] The technical principles of the embodiments of the present invention have been described above in conjunction with specific embodiments. These descriptions are intended solely to explain the principles of the embodiments of the present invention and should not be construed in any way as limiting the scope of protection of the embodiments of the present invention. Based on the explanations herein, those skilled in the art will be able to conceive of other specific implementations of the embodiments of the present invention without inventive effort, and these implementations will fall within the scope of protection of the embodiments of the present invention.

Claims

1. A rubber sealing ring air tightness detection device, comprising a base plate (1), a shell (2) and a cover plate (3), wherein the shell (2) is fixed to the base plate (1), and the cover plate (3) is installed at the top opening of the shell (2); It is characterized in that Also includes: A lower barrel (31) is mounted on the upper middle portion of the housing (2) via a support plate, and a discharge port is provided on one side of the bottom of the lower barrel (31); A test cylinder (4) is arranged at the bottom of the housing (2), the test cylinder (4) is close to the discharge port of the discharge cylinder (31), and the test cylinder (4) is used to test the sealing ring (7); An electric push rod (5) is installed on the inner side of the cover plate (3), and the electric push rod (5) is located directly above the test cylinder (4); A pressure cover (6) is mounted on the end of the push rod of the electric push rod (5), and the extrusion surface of the pressure cover (6) is consistent with the inner diameter of the test cylinder (4); a pressure gauge (8) passing through and mounted on the side wall of the housing (2), the pressure gauge (8) being used to detect changes in air pressure within the housing (2); A vacuum pump (9) is installed on the top of the cover plate (3), and the vacuum pump (9) is used to extract the gas in the housing (2) and create a low-pressure test condition; A spring-up member is arranged inside the test cylinder (4), and is used to provide an elastic force for the test sealing ring (7) to reset upwards.

2. A rubber sealing ring air tightness detection device according to claim 1, characterized in that: Sealing strips are provided at the joints between the top of the housing (2) and the bottom of the cover plate (3).

3. A rubber sealing ring air tightness detection device as claimed in claim 2, characterized in that: The pressure cover (6) is a circular bucket-shaped structure, and vents are evenly arranged on the cover body of the pressure cover (6).

4. A rubber sealing ring air tightness detection device as claimed in claim 3, characterized in that: A collecting chamber (21) is sealed and connected to the side wall of the housing (2) close to the testing cylinder (4). The collecting chamber (21) is used to collect the sealing ring (7) after testing. A baffle (22) is installed on one side of the collecting chamber (21). The baffle (22) and the collecting chamber (21) are sealed and clamped.

5. A rubber sealing ring air tightness detection device as claimed in claim 4, characterized in that: The housing (2) and the collecting chamber (21) are both made of transparent materials.

6. A rubber sealing ring air tightness detection device as claimed in claim 5, characterized in that: The pop-up member comprises a telescopic rod (13), a push plate (14) and a spring (15); the telescopic rod (13) is mounted on the bottom of the test cylinder (4); the push plate (14) is slidably connected to the top of the test cylinder (4); the push plate (14) and the telescopic rod (13) are connected; and a spring (15) is sleeved on the telescopic rod (13) between the test cylinder (4) and the push plate (14).

7. A rubber sealing ring air tightness detection device as claimed in claim 6, characterized in that: The lower barrel (31) is provided with a sliding structure: A push block (10) is provided with a slide groove on the bottom plate (1) of the lower barrel (31), and the push block (10) is slidably mounted on the bottom plate (1) of the lower barrel (31) through the slide groove; A motor (11) is mounted on one side of the inner wall of the housing (2); A screw rod (12) is rotatably mounted between the test cylinder (4) and the housing (2), the screw rod (12) is connected to the output shaft of the motor (11), and the screw rod (12) is threadedly connected to the push block (10).

8. The rubber sealing ring air tightness detection device according to claim 7, characterized in that: The push block (10) is a right-angled trapezoidal wedge block, and the right-angle side of the push block (10) is equal to the thickness of the sealing ring (7).

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