Airtightness testing device for mechanical parts

Abstract

The utility model relates to mechanical part processing technical field, and disclose a kind of air-tightness testing device for mechanical parts, the air-tightness testing device for mechanical parts, including bottom plate, bottom plate top is provided with test box, its top clamps have box cover;Further including rotary testing mechanism, rotary testing mechanism includes the drive assembly being set to test box inside one side, drive assembly one side is provided with first casing, and multiple sets of hollow abutting seat are rotatably installed in first casing interior.The air cylinder part is sealed at both ends, and the compressed air of booster pump is sent into air cylinder part through three-way pipe, first solenoid valve pipe, and the air tightness is judged by pressure gauge by operator, if the value fluctuates, servo motor is rotated by transmission assembly and drives fixed base, so that air cylinder part and hollow abutting seat are synchronously rotated, and air leakage point is positioned by bubble through explosion-proof glass, and the problem that traditional detection is difficult to find small leakage point is solved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical parts processing technology, specifically to an airtightness testing device for mechanical parts. Background Technology

[0002] In the field of mechanical parts processing, cylinder parts are the core actuators of pneumatic systems. They transmit power through the sealed storage and directional release of compressed gas. The airtightness directly determines the operating efficiency, stability and safety of the equipment. During the welding, boring and other processing of cylinder parts, small defects such as sand holes, micro-cracks and scratches on the sealing surface are easily generated due to process errors, which can lead to high-pressure gas leakage and power loss. Therefore, a special airtightness testing device is required.

[0003] When testing cylinder parts for leaks and air tightness, the operator's field of vision is obstructed by the cylinder's installation angle, making it difficult to quickly detect minor leaks and reducing the accuracy of air tightness testing. Therefore, there is an urgent need to develop an air tightness testing device for mechanical parts to solve these practical problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an airtightness testing device for mechanical parts, which solves the problem that the operator's field of vision is obstructed due to the influence of the cylinder installation angle during testing, making it difficult to quickly detect minor air leaks.

[0005] To achieve the above objectives, this utility model provides an airtightness testing device for mechanical parts through the following technical solution: a base plate with a test box on top of the base plate and a box cover snapped onto the top of the test box.

[0006] It also includes a rotating testing mechanism, which includes a drive assembly disposed on one side inside the test chamber. A first housing is disposed on one side of the drive assembly. Multiple sets of hollow contact seats are rotatably installed inside the first housing. A second housing is disposed on the other side inside the test chamber. Multiple sets of fixed seats corresponding to the hollow contact seats are rotatably installed inside the second housing. A transmission assembly is disposed on one side of the test chamber. The output end of the transmission assembly is rotatably connected to one side of the fixed seats. A servo motor is disposed on one side of the transmission assembly through the housing. An air supply assembly is also disposed on the top side of the base plate.

[0007] Preferably, the driving assembly includes a motor disposed at the bottom of one side of the test chamber, the output end of the motor passing through the interior of the test chamber and fixedly connected to a screw, a threaded sleeve is installed on the outer side of the screw, and one side of the threaded sleeve is fixedly connected to one side of the first housing. A limiting rod corresponding to the screw is also provided on the other side of the interior of the test chamber to limit the first housing from rotating with the screw.

[0008] Preferably, the air supply assembly includes a booster pump located on one side of the top of the base plate. The air outlet pipe of the booster pump is fixedly connected to a three-way pipe. Multiple sets of first solenoid valve pipes are installed at equal intervals on one side of the three-way pipe. One end of the first solenoid valve pipe is fixedly connected to a telescopic pipe that penetrates one side of the test box. One end of the telescopic pipe is connected to the hollow contact seat through a rotary joint. A pressure gauge is also provided on the outside of the telescopic pipe.

[0009] Preferably, the test box has a mounting groove on the front, and explosion-proof glass is embedded in the mounting groove.

[0010] Preferably, it also includes a purification mechanism, which includes a drain valve pipe located at the bottom of the back of the test chamber. One end of the drain valve pipe is fixedly connected to a filter box, and the filter box is located on the top of the base plate near the back of the test chamber. The filter box is filled with bamboo charcoal granular fiber through two sets of mesh plates.

[0011] Preferably, a hinge is provided on one side of the filter box, and a door is fixedly connected to one side of the hinge.

[0012] This invention provides an airtightness testing device for mechanical parts. Compared with the prior art, it has the following advantages.

[0013] 1. The motor drives the screw to move the screw sleeve, causing the first housing to move the hollow contact seat to contact one end of the part, thereby sealing both ends. The booster pump compresses air and sends it into the cylinder part through the three-way pipe and the first solenoid valve pipe. The operator judges the air tightness by the pressure gauge. If the value fluctuates, the servo motor drives the fixed seat to rotate through the transmission component, so that the cylinder part and the hollow contact seat rotate synchronously. The leak point is located by the air bubble through the explosion-proof glass, which solves the problem that traditional detection is difficult to detect tiny leaks.

[0014] 2. After the test is completed, the operator unscrews the drain valve to drain the water in the test chamber. Because the water comes into contact with the processed cylinder parts, it will mix with the residual cooling and lubrication from the parts processing and grinding debris. The water containing impurities flows into the filter box through the drain valve and is adsorbed and filtered by the bamboo charcoal granular fiber with its porous adsorption properties, which solves the environmental pollution and sewage pipe blockage problems caused by direct discharge of wastewater containing impurities. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the appearance of the present utility model;

[0016] Figure 2 This is a partial schematic diagram of the rotating testing mechanism of this utility model;

[0017] Figure 3 This is a partial schematic diagram of the purification mechanism of this utility model.

[0018] In the diagram: 1. Base plate; 2. Test box; 3. Rotary test mechanism; 301. Motor; 302. Screw; 303. Screw sleeve; 304. First housing; 305. Hollow contact seat; 306. Second housing; 307. Fixed seat; 308. Transmission assembly; 309. Servo motor; 310. Booster pump; 311. T-pipe; 312. First solenoid valve pipe; 313. Telescopic pipe; 314. Pressure gauge; 4. Explosion-proof glass; 5. Purification mechanism; 501. Drain valve pipe; 502. Filter box; 503. Bamboo charcoal granule fiber; 504. Box door. Detailed Implementation

[0019] 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.

[0020] First implementation method:

[0021] refer to Figure 1-3 An airtightness testing device for mechanical parts includes a base plate 1, a test box 2 is provided on the top of the base plate 1, and a box cover is snapped onto the top of the test box 2.

[0022] It also includes a rotating testing mechanism 3, which includes a drive assembly disposed on one side inside the test chamber 2. A first housing 304 is disposed on one side of the drive assembly. Multiple sets of hollow contact seats 305 are rotatably installed inside the first housing 304. A second housing 306 is disposed on the other side inside the test chamber 2. Multiple sets of fixed seats 307 corresponding to the hollow contact seats 305 are rotatably installed inside the second housing 306. A transmission assembly 308 is disposed on one side of the test chamber 2. The output end of the transmission assembly 308 is rotatably connected to one side of the fixed seat 307. A servo motor 309 is disposed on one side of the transmission assembly 308 through the housing. An air supply assembly is also disposed on one side of the top of the base plate 1.

[0023] The drive assembly includes a motor 301 located at the bottom of one side of the test chamber 2. The output end of the motor 301 passes through the interior of the test chamber 2 and is fixedly connected to a screw 302. A screw sleeve 303 is threaded on the outside of the screw 302, and one side of the screw sleeve 303 is fixedly connected to one side of the first housing 304. A limiting rod corresponding to the screw 302 is also provided on the other side of the interior of the test chamber 2 to limit the first housing 304 from rotating with the screw 302.

[0024] The air supply assembly includes a booster pump 310 located on one side of the top of the base plate 1. The air outlet pipe of the booster pump 310 is fixedly connected to a three-way pipe 311. Multiple sets of first solenoid valve pipes 312 are equidistantly installed on one side of the three-way pipe 311. One end of the first solenoid valve pipe 312 is fixedly connected to a telescopic pipe 313 that penetrates one side of the test chamber 2. One end of the telescopic pipe 313 is connected to the hollow contact seat 305 through a rotary joint. A pressure gauge 314 is also provided on the outside of the telescopic pipe 313. An installation groove is provided on the front of the test chamber 2, and an explosion-proof glass 4 is embedded in the installation groove.

[0025] Open the box cover and place the cylinder part to be tested between the hollow contact seat 305 and the fixed seat 307. The motor 301 runs and drives the screw 302 to rotate. The screw 302 drives the screw sleeve 303 to move horizontally. The moving screw sleeve 303 drives the first housing 304 to move synchronously. The moving first housing 304 drives the hollow contact seat 305 to abut against one end of the cylinder part, so that the other end of the cylinder part abuts against the inside of the fixed seat 307 to achieve a seal, thereby sealing both ends of the cylinder part.

[0026] After water is supplied into the test chamber 2, the chamber cover is closed. The booster pump 310 is used to compress air and deliver it into the three-way pipe 311. Then, multiple sets of first solenoid valves 312 are opened and closed in sequence to allow high-pressure air to enter the cylinder parts in sequence.

[0027] Operators observe the pressure gauge 314 to understand the internal pressure of the cylinder parts and regularly check the value of the pressure gauge 314 to determine whether there are any leaks or processing defects in the cylinder parts, thereby determining whether the airtightness of the cylinder parts is up to standard.

[0028] When the operator observes fluctuations in the pressure gauge 314, the servo motor 309 is started to drive the transmission assembly 308 to do work. The transmission assembly 308 drives multiple sets of fixed seats 307 to rotate. The rotating fixed seats 307 drive the hollow contact seats 305 to rotate synchronously through the cylinder parts they are in contact with.

[0029] At this time, the operator observes the cylinder parts corresponding to the numerical fluctuations through the explosion-proof glass 4. Since bubbles will be generated when the high-pressure gas leak inside the cylinder parts comes into contact with water, the operator can accurately locate the leak point of the cylinder parts based on the location of the bubbles. This achieves efficient detection of the airtightness of the cylinder parts and accurate location of the leak point, solving the problems of difficulty in quickly finding small leaks, low detection efficiency and insufficient accuracy in traditional detection.

[0030] Second implementation method:

[0031] Impurities such as residues used for cooling and lubrication during cylinder part processing and fine debris generated during grinding will naturally mix into the water. Direct discharge can easily cause environmental pollution and pipe blockage.

[0032] refer to Figure 3 In the second embodiment of this utility model, a purification mechanism 5 is also included. The purification mechanism 5 includes a drain valve pipe 501 disposed at the bottom of the back of the test chamber 2. One end of the drain valve pipe 501 is fixedly connected to the filter box 502, and the filter box 502 is located on the top of the bottom plate 1 near the back of the test chamber 2. The filter box 502 is filled with bamboo charcoal granular fiber 503 through two sets of mesh plates. A hinge is provided on one side of the filter box 502, and a door 504 is fixedly connected to one side of the hinge.

[0033] After the test is completed, the operator turns the drain valve 501 to drain the water inside the test chamber 2. When the water inside the test chamber 2 comes into contact with the processed cylinder parts, impurities such as the residue used for cooling and lubrication during the processing of the parts and the fine debris generated during the grinding process will naturally mix into the water. When the water containing impurities is discharged into the filter box 502 through the drain valve 501, the bamboo charcoal granular fiber 503 has the porous adsorption and filtration capabilities to adsorb and filter the cutting fluid residue, fine grinding particles and other impurities in the water, and discharge the purified water to the outside. This realizes the purification treatment function of wastewater containing impurities and solves the problem that direct discharge of wastewater containing impurities is likely to cause environmental pollution and blockage of external sewage pipes.

[0034] The bamboo charcoal granular fiber 503 can be replaced periodically by opening the box door 504, which ensures a continuous and stable filtration effect and facilitates equipment maintenance.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An airtightness testing device for mechanical parts, comprising a base plate (1), characterized in that: The bottom plate (1) is provided with a test box (2) on top, and a box cover is snapped onto the top of the test box; It also includes a rotating testing mechanism (3), which includes a driving component disposed on one side inside the test box (2). A first housing (304) is disposed on one side of the driving component. Multiple sets of hollow contact seats (305) are rotatably installed inside the first housing (304). A second housing (306) is disposed on the other side inside the test box (2). Multiple sets of fixed seats (307) corresponding to the hollow contact seats (305) are rotatably installed inside the second housing (306). A transmission component (308) is disposed on one side of the test box (2). The output end of the transmission component (308) is rotatably connected to one side of the fixed seat (307). A servo motor (309) is disposed on one side of the transmission component (308) through the housing. An air supply component is also disposed on one side of the top of the base plate (1).

2. The airtightness testing device for mechanical parts according to claim 1, characterized in that: The drive assembly includes a motor (301) located at the bottom of one side of the test box (2). The output end of the motor (301) passes through the inside of the test box (2) and is fixedly connected to a screw (302). A screw sleeve (303) is threaded on the outside of the screw (302), and one side of the screw sleeve (303) is fixedly connected to one side of the first housing (304). A limiting rod corresponding to the screw (302) is also provided on the other side of the inside of the test box (2) to limit the first housing (304) from rotating with the screw (302).

3. The airtightness testing device for mechanical parts according to claim 1, characterized in that: The gas supply assembly includes a booster pump (310) located on one side of the top of the base plate (1). The gas outlet pipe of the booster pump (310) is fixedly connected to a three-way pipe (311). Multiple sets of first solenoid valve pipes (312) are installed at equal intervals on one side of the three-way pipe (311). One end of the first solenoid valve pipe (312) is fixedly connected to a telescopic pipe (313) that penetrates one side of the test box (2). One end of the telescopic pipe (313) is connected to the hollow contact seat (305) through a rotary joint. A pressure gauge (314) is also provided on the outside of the telescopic pipe (313).

4. The airtightness testing device for mechanical parts according to claim 1, characterized in that: The test box (2) has an installation slot on the front, and an explosion-proof glass (4) is embedded inside the installation slot.

5. The airtightness testing device for mechanical parts according to claim 1, characterized in that: It also includes a purification mechanism (5), which includes a drain valve pipe (501) located at the bottom of the back of the test box (2). One end of the drain valve pipe (501) is fixedly connected to a filter box (502), and the filter box (502) is located on the top of the base plate (1) near the back of the test box (2). The filter box (502) is filled with bamboo charcoal granular fiber (503) through two sets of mesh plates.

6. The airtightness testing device for mechanical parts according to claim 5, characterized in that: The filter box (502) is provided with a hinge on one side, and a door (504) is fixedly connected to one side of the hinge.

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