Equipment for detecting high-temperature resistance of O-shaped sealing ring

Abstract

The utility model discloses a high-temperature-resistant performance detection device for an O-shaped sealing ring, which belongs to the field of quality inspection and comprises a high-temperature-resistant sealing assembly for detecting the O-shaped ring. The high-temperature-resistant sealing assembly comprises a pneumatic telescopic rod pressing the O-shaped ring downwards, a detachable fixing ring plate fixing the bottom face of the O-shaped ring, a sealing air pressure shell fixing the detachable fixing ring plate and a water tank detecting whether the detachable fixing ring plate leaks air or not. Compared with the prior art, the device has the advantages that the detachable fixing ring matched with the O-shaped ring is arranged below the heating wire, and the negative pressure suction cup is arranged above the detachable fixing ring, so that the O-shaped ring can be sucked out of the sealed air pressure shell through the suction force of the negative pressure suction cup after the O-shaped ring is detected; and the condition that material taking is difficult due to the fact that the temperature of the O-shaped ring is too high during taking out is avoided.

Description

Technical Field

[0001] This utility model relates to the field of quality inspection, specifically to a device for testing the high-temperature resistance of O-ring seals. Background Technology

[0002] As a sealing and protective component in current industrial transmission structures, O-rings ensure the safety of mechanical operation. To ensure the sealing effect of O-rings under high temperature conditions, a high-temperature resistance testing device is usually used to conduct high-temperature resistance quality inspection on O-rings after production.

[0003] The commonly used high-temperature sealing components for existing industrial magnetic connectors mainly consist of a pneumatic telescopic rod pressing down on the O-ring, a detachable retaining plate fixing the bottom surface of the O-ring, a sealing air pressure housing fixing the detachable retaining plate, and a water tank for detecting whether the detachable retaining plate leaks. The top opening of the sealing air pressure housing is sealed by a sealing plate, and the temperature of the O-ring is controlled by a heating wire. Whether the O-ring leaks under high temperature conditions is determined by whether air bubbles are generated inside the water tank during the quality inspection process.

[0004] Although this method can intuitively reflect the airtightness of the O-ring under high temperature, after the test is completed, the O-ring will be directly fixed to the detachable fixing plate. The O-ring and the sealing pressure shell will become very hot due to the heating wire. If you take it out directly by hand, your arm will inevitably touch the cavity of the sealing pressure shell, which may easily burn your arm when taking it out. Utility Model Content

[0005] The technical problem this invention aims to solve is that the O-rings of existing industrial magnetic connectors cannot be automatically ejected after testing, which makes them prone to burns when removed.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a high-temperature resistance performance testing device for O-rings, comprising a high-temperature resistance sealing assembly for testing O-rings, the high-temperature resistance sealing assembly comprising a pneumatic telescopic rod pressing down on the O-ring, a detachable fixing ring plate fixing the bottom surface of the O-ring, a sealing air pressure housing fixing the detachable fixing ring plate, and a water tank for detecting whether the detachable fixing ring plate leaks. The detachable fixing ring plate has several air holes inserted into the water tank below the O-ring fixing groove. A sealing plate is welded to the output shaft of the pneumatic telescopic rod to seal the open end of the top surface of the sealing air pressure housing, and a heating wire for heating the O-ring is provided inside the sealing plate. A negative pressure suction cup with multiple suction ports on the bottom surface of the heating wire is provided on the outer wall end, and a detachable fixing ring corresponding to the top surface of the O-ring is provided on the bottom surface of the negative pressure suction cup. The negative pressure suction port of the negative pressure suction cup passes through the upper and lower ends of the detachable fixing ring, and the detachable fixing ring is connected to the bottom surface of the negative pressure suction cup by bolts.

[0007] As an improvement, an air inlet for connecting a pressure pump is provided on one side of the sealed air pressure housing.

[0008] As an improvement, the base of the pneumatic telescopic rod is provided with a U-shaped fixing frame connected by a bolt structure.

[0009] As an improvement, the detachable retaining ring is made of alumina ceramic.

[0010] As an improvement, the water tank has a transparent shell, and the water inside the tank is soapy water.

[0011] As an improvement, the detachable fixing ring plate is made of polypropylene.

[0012] The advantages of this invention compared with the prior art are as follows: This device has a detachable fixing ring that matches the O-ring installed below the heating wire, and a negative pressure suction cup above the detachable fixing ring. This ensures that after the O-ring is tested, it can be sucked out of the sealed air pressure shell by the suction force of the negative pressure suction cup, avoiding the situation where it is difficult to remove the material due to the high temperature of the O-ring. Attached Figure Description

[0013] Figure 1 This is a general structural diagram of a device for testing the high-temperature resistance of O-ring seals according to this utility model.

[0014] Figure 2 This is a cross-sectional view of the overall structure of a high-temperature resistance testing device for O-ring seals according to this utility model.

[0015] Figure 3 This is an exploded view of the overall structure of a high-temperature resistance testing device for O-ring seals according to this utility model.

[0016] Figure 4This is an exploded view of the negative pressure suction cup connection of a high-temperature resistance testing device for O-ring seals according to this utility model.

[0017] As shown in the figure: 1. O-ring; 2. High-temperature resistant sealing assembly; 21. Pneumatic telescopic rod; 22. Removable fixing ring plate; 23. Sealing air pressure housing; 231. Air inlet; 24. Water tank; 25. Air hole; 26. Sealing plate; 27. Heating wire; 3. Negative pressure suction cup; 4. Removable fixing ring; 5. U-shaped fixing bracket. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] As per the instruction manual Figure 1 , 2 As shown in Figures 3 and 4, a high-temperature resistant sealing assembly 2 is included for detecting O-ring 1. The high-temperature resistant sealing assembly 2 includes a pneumatic telescopic rod 21 that presses down on top of O-ring 1, a detachable fixing plate 22 that fixes the bottom surface of O-ring 1, a sealing air pressure housing 23 that fixes the detachable fixing plate 22, and a water tank 24 for detecting whether the detachable fixing plate 22 is leaking. To ensure that bubbles can be generated normally when observing the water tank 24, the water tank 24 is a transparent shell, and the water inside the water tank 24 is soapy water. At the same time, several air holes 25 are provided below the fixing groove of O-ring 1 of the detachable fixing plate 22 to insert into the water tank 24, thereby ensuring that high-pressure gas can smoothly enter the soapy water and ensure the generation of bubbles.

[0020] To ensure the sealing of the top opening of the sealed air pressure housing 23 during testing, a sealing plate 26 is welded to the output shaft of the pneumatic telescopic rod 21 to seal the top opening of the sealed air pressure housing 23. The edge of the sealing plate 26 is generally equipped with a sealing ring.

[0021] The enclosed plate 26 has a heating wire 27 with a heating O-ring 1 inside, and the heating wire 27 is generally selected to have a temperature display so as to facilitate monitoring of temperature changes.

[0022] To automatically remove the O-ring 1 after testing and avoid burns, the outer wall of the heating wire 27 is provided with a negative pressure suction cup 3 with multiple suction ports on its bottom surface. A detachable fixing ring 4 corresponding to the top surface of the O-ring 1 is provided on the bottom surface of the negative pressure suction cup 3. The negative pressure suction ports of the negative pressure suction cup 3 pass through the upper and lower ends of the detachable fixing ring 4. The detachable fixing ring 4 is connected to the bottom surface of the negative pressure suction cup 3 by bolts. The detachable fixing ring 4 is made of alumina ceramic, which has high thermal conductivity and prevents the O-ring 1 from sticking. Similarly, the detachable fixing ring plate 22 is made of polypropylene, which is a high-hardness material with low thermal conductivity. This ensures the hardness of the detachable fixing ring plate 22 while preventing heat loss and avoiding the formation of bubbles in soapy water due to high temperature.

[0023] To facilitate pressurization of the sealed air pressure housing 23, an air inlet 231 for connecting to an air pressure pump is provided on one side of the sealed air pressure housing 23, and both the negative pressure suction cup 3 and the pneumatic telescopic rod 21 are supplied with high-pressure gas by an air pressure pump.

[0024] To ensure the accuracy of the sealing plate 26 below the pneumatic telescopic rod 21, a U-shaped fixing frame 5 connected by a bolt structure is provided on the base of the pneumatic telescopic rod 21, wherein the U-shaped fixing frame 5 is a movable fixing frame.

[0025] In specific implementation, the inner ring of the O-ring 1 is secured to the retaining ring above the detachable retaining ring 4. Then, the negative pressure suction cup 3 is activated to ensure the O-ring 1 is positioned correctly. The pneumatic telescopic rod 21 is activated to press the O-ring 1 onto the detachable retaining ring plate 22. The O-ring 1 is then heated by the heating wire 27. Next, the pressure pump is activated to pressurize the inside of the sealed air pressure housing 23. Whether the O-ring 1 leaks air is observed by checking for air bubbles inside the water tank 24, thus determining whether the O-ring 1 is leaking. Its sealing performance is ensured by selecting detachable fixing ring 4 and detachable fixing ring plate 22, which must match the model of O-ring 1. The detachable fixing ring plate 22 is sealed to the cavity groove of the sealing air pressure housing 23 through a sealing gasket. After the test is completed, the pneumatic telescopic rod 21 is retracted, so that O-ring 1 is raised as the pneumatic telescopic rod 21 retracts. Then, the heat insulation glove is placed under O-ring 1. Finally, the negative pressure suction cup 4 is released, and O-ring 1 is dropped onto the heat insulation glove for recycling.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high-temperature resistance testing device for O-ring seals, comprising a high-temperature resistant sealing assembly (2) for testing O-rings (1), wherein the high-temperature resistant sealing assembly (2) comprises a pneumatic telescopic rod (21) pressing down on the O-ring (1), a detachable fixing plate (22) fixing the bottom surface of the O-ring (1), a sealing air pressure housing (23) fixing the detachable fixing plate (22), and a water tank (24) for detecting whether the detachable fixing plate (22) leaks air, wherein the detachable fixing plate (22) has a plurality of air holes (25) for inserting into the water tank (24) below the O-ring (1) fixing groove, and a sealing plate (26) for sealing the open end of the top surface of the sealing air pressure housing (23) is welded to the output shaft of the pneumatic telescopic rod (21), and a heating wire (27) for heating the O-ring (1) is provided inside the sealing plate (26), characterized in that: The outer wall end of the heating wire (27) is provided with a negative pressure suction cup (3) with multiple suction ports on the bottom surface, and the bottom surface of the negative pressure suction cup (3) is provided with a detachable fixing ring (4) corresponding to the top surface of the O-ring (1), and the negative pressure suction port of the negative pressure suction cup (3) passes through the upper and lower ends of the detachable fixing ring (4). The detachable fixing ring (4) is connected to the bottom surface of the negative pressure suction cup (3) by a bolt structure.

2. The high-temperature resistance testing equipment for O-ring seals according to claim 1, characterized in that: The sealed air pressure housing (23) has an air inlet (231) on one side for connecting to an air pressure pump.

3. The high-temperature resistance testing equipment for O-ring seals according to claim 1, characterized in that: The base of the pneumatic telescopic rod (21) is provided with a U-shaped fixing frame (5) connected by a bolt structure.

4. The high-temperature resistance testing equipment for O-ring seals according to claim 1, characterized in that: The detachable retaining ring (4) is made of alumina ceramic.

5. The high-temperature resistance testing equipment for O-ring seals according to claim 1, characterized in that: The water tank (24) is a transparent shell, and the water inside the water tank (24) is soapy water.

6. The high-temperature resistance testing equipment for O-ring seals according to claim 1, characterized in that: The detachable fixing ring plate (22) is made of polypropylene.

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