Negative pressure testing device for air path sealing performance

Abstract

The utility model relates to the technical field of measurement, in particular to a gas path sealing negative pressure testing device, which comprises a base, a lifting assembly, a vacuum pump and a mounting assembly, the mounting assembly comprises a mounting plate, a spring, a fixed rod, a telescopic rod and a clamping part, the base is provided with a mounting groove, the spring is fixedly connected with the base, the fixed rod is fixedly connected with the base, and the telescopic rod is fixedly connected with the base. The telescopic rod is slidably connected with the fixed rod, the mounting plate is fixedly connected with the spring, a product is inserted into the mounting groove, the product is clamped through the clamping part, then the vacuum pump makes contact with the product downwards for air tightness detection, and after detection is finished, the vacuum pump is lifted up, and the product is loosened by the clamping part, and then the product is clamped. The spring rebounds on the fixing rod according to the characteristic of elastic deformation of the spring, the telescopic rod slides synchronously while the mounting plate is pushed to slide upwards in the mounting groove, the direction of elastic deformation of the spring is kept perpendicular all the time, and the product can be supported out of the surface of the base through sliding of the mounting plate so that the product can be taken out conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to a negative pressure test device for airtightness of an air circuit. Background Art

[0002] In workpieces such as cast iron, aluminum die-casting, and low-pressure aluminum casting, such as engine casings, automotive water pumps, and various small and medium-sized oil cylinders / cylinders, good internal airtightness is required. Therefore, when these workpieces are in use, airtightness tests need to be carried out.

[0003] Currently, the prior art publication number (CN220912567U) of a negative pressure sealing performance detection device includes a vacuum pump, a first solenoid valve, a second vacuum digital display, a tee, and a second solenoid valve connected in sequence. The other opening of the tee is hermetically connected to the airtight port of the tooling, the detection port of the test piece is hermetically connected to the airtight port, and the detection port is hermetically connected to the airtight port. Then, the vacuum pump is driven to evacuate, and the negative pressure is obtained through the second vacuum digital display. Then, the first solenoid valve is closed and waited for a period of time. Since the inside of the test piece is in negative pressure at this time, when the airtightness of the test piece is good, the negative pressure shown by the second vacuum digital display will be higher than the set value of the vacuum test instrument, and when the airtightness of the test piece is not good, the negative pressure shown by the second vacuum digital display will be lower than the set value of the vacuum test instrument, so as to quickly complete the sealing performance detection of a test piece, reduce the backlog of products, and improve the shipping rate of products.

[0004] However, in the above solution, when detecting the airtightness of various products, the product needs to be inserted into the base for detection, and it is not convenient to take out the solenoid valve from the base after the detection. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a negative pressure test device for airtightness of an air circuit, aiming to solve the problem that it is not convenient to take out the product after detecting the airtightness by putting the product into the base of the existing negative pressure sealing performance detection device.

[0006] To achieve the above purpose, the utility model provides a negative pressure test device for airtightness of an air circuit, including a base, a lifting assembly, a vacuum pump, and an installation assembly. The lifting assembly is arranged on one side of the base, the vacuum pump is arranged on one side of the lifting assembly, the installation assembly includes an installation plate, a spring, a fixed rod, a telescopic rod, and a plurality of clamping parts. The base has an installation groove, the installation groove is located on one side of the base, the spring is fixedly connected to the base and is located on one side of the base, the fixed rod is fixedly connected to the base and is located on one side of the base, the telescopic rod is slidably connected to the fixed rod and is located on one side of the fixed rod, the installation plate is fixedly connected to the spring and is located on one side of the spring, and the plurality of clamping parts are respectively located on one side of the base.

[0007] Wherein, the clamping part includes a clamping cylinder, a connecting rod and an arc-shaped clamp. The clamping cylinder is fixedly connected to the base and is located on one side of the base. The connecting rod is fixedly connected to the output end of the clamping cylinder and is located on one side of the clamping cylinder. The arc-shaped clamp is fixedly connected to the connecting rod and is located on one side of the connecting rod.

[0008] Wherein, the clamping part further includes a soft pad. The soft pad is fixedly connected to the arc-shaped clamp and is located on one side of the arc-shaped clamp.

[0009] Wherein, the installation component further includes a support arm, a telescopic arm and a lifting cylinder. The support arm is fixedly connected to the base and is located on one side of the base. The lifting cylinder is fixedly connected to the support arm and is located on one side of the support arm. The telescopic arm is fixedly connected to the output end of the lifting cylinder, is fixedly connected to the vacuum pump, and is located on one side of the lifting cylinder.

[0010] Wherein, the air circuit sealing negative pressure testing device further includes a support component, and the support component is arranged on one side of the base.

[0011] Wherein, the support component includes support legs and moving wheels. The support legs are fixedly connected to the base and are located on one side of the base. The moving wheels are rotatably connected to the support legs and are located on one side of the support legs.

[0012] For a pneumatic circuit sealing negative pressure testing device of the present utility model, the product is inserted into the installation groove, and the product is clamped by the clamping part. Then, the vacuum pump moves on the lifting component. The vacuum pump contacts the product downward for airtightness detection. After the detection is completed, the vacuum pump lifts. After the clamping part releases the product, the spring rebounds on the fixed rod according to its own elastic deformation characteristics, pushing the installation plate to slide upward in the installation groove while the telescopic rod also slides synchronously, always keeping the direction of elastic deformation of the spring perpendicular. The sliding of the installation plate will push the product out of the surface of the base for easy removal. Finally, according to the data shown on the vacuum digital display after the vacuum pump evacuates the air, the vacuum data display can quickly observe the abnormality of the data, thereby judging the airtightness of the workpiece. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0014] Figure 1 It is a schematic structural diagram of the whole of the first embodiment of the present utility model.

[0015] Figure 2 It is a schematic structural diagram of another perspective of the whole of the first embodiment of the present utility model.

[0016] Figure 3 It is a sectional view of the structure of the whole of the first embodiment of the present utility model.

[0017] Figure 4 It is a schematic structural diagram of the whole of the second embodiment of the present utility model.

[0018] 101 - Base, 102 - Vacuum pump, 103 - Installation component, 104 - Installation groove, 105 - Installation plate, 106 - Spring, 107 - Fixed rod, 108 - Telescopic rod, 109 - Clamping part, 110 - Clamping cylinder, 111 - Connecting rod, 112 - Arc-shaped clamp, 113 - Soft pad, 114 - Support arm, 115 - Telescopic arm, 116 - Lifting cylinder, 117 - Lifting component, 201 - Support component, 202 - Support leg, 203 - Movable wheel. Specific implementation manners

[0019] The first embodiment of the present application is as follows:

[0020] Please refer to Figures 1 - 3 , wherein, Figure 1 is a schematic structural diagram of the whole of the first embodiment of the present utility model, Figure 2 is a schematic structural diagram of another perspective of the whole of the first embodiment of the present utility model, Figure 3 is a sectional view of the structure of the whole of the first embodiment of the present utility model.

[0021] The present utility model provides a gas path airtightness negative pressure testing device, which includes a base 101, a vacuum pump 102 and an installation component 103. The installation component 103 includes an installation plate 105, a spring 106, a fixed rod 107, a telescopic rod 108 and a clamping part 109. The clamping part 109 includes a clamping cylinder 110, a connecting rod 111, an arc-shaped clamp 112 and a soft pad 113. By the foregoing solution, the problem that it is not convenient to take out the product after performing airtightness detection by putting the product into the base 101 in the existing negative pressure sealing performance detection device is solved.

[0022] For this specific embodiment, the lifting assembly 117 is disposed on one side of the base 101, and the vacuum pump 102 is disposed on one side of the lifting assembly 117. Connect the vacuum pump 102 to the vacuum number display meter. Place the product in the base 101, align the vacuum pump 102 with the product, and then the vacuum pump 102 slides on the lifting assembly 117 to contact the product for vacuum pumping. Then, according to the various data displayed by the vacuum number display meter during the operation of the vacuum pump 102, it is determined whether the product is qualified. The specific structures and usage methods of the vacuum pump 102 and the vacuum number display meter are described in the patent document with the publication number CN220912567U, which is not within the protection scope of this application and will not be elaborated here.

[0023] Wherein, the base 101 has a mounting groove 104 located on one side of the base 101. The spring 106 is fixedly connected to the base 101 and is located on one side of the base 101. The fixing rod 107 is fixedly connected to the base 101 and is located on one side of the base 101. The telescopic rod 108 is slidably connected to the fixing rod 107 and is located on one side of the fixing rod 107. The mounting plate 105 is fixedly connected to the spring 106 and is located on one side of the spring 106. The clamping portion 109 is located on one side of the base 101. Insert the product into the mounting groove 104, clamp the product through the clamping portion 109, then align the vacuum pump 102 with the product, and drive the vacuum pump 102 to move downward in the lifting assembly 107 to contact the product for airtightness detection. After the detection is completed, the vacuum pump 102 is lifted and leaves the base 101 by a certain distance. Then, after the clamping portion 109 releases the product, the spring 106 rebounds on the fixing rod 107 according to its own elastic deformation characteristics, pushing the mounting plate 105 to slide upward in the mounting groove 104 while the telescopic rod 108 also slides synchronously, always keeping the direction of elastic deformation of the spring 106 perpendicular. The sliding of the mounting plate 105 will push the product out of the surface of the base 101 for easy removal.

[0024] Secondly, the clamping cylinder 110 is fixedly connected to the base 101 and is located on one side of the base 101. The connecting rod 111 is fixedly connected to the output end of the clamping cylinder 110 and is located on one side of the clamping cylinder 110. The arc-shaped clamp 112 is fixedly connected to the connecting rod 111 and is located on one side of the connecting rod 111. When the product is inserted into the installation groove 104, the output end of the clamping cylinder 110 will push the connecting rod 111 to gather towards the middle synchronously. One end of the connecting rod 111 is connected to the output end of the clamping cylinder 110, and the other end is connected to the arc-shaped clamp 112. Through the push of the connecting rod 111, the arc-shaped clamps contact the surface of the product simultaneously, and then the product is clamped by continuous gathering to fix the position of the product and align it below the vacuum pump 102, ensuring that the position of the product will not shift when the vacuum pump 102 slides to align with the product for vacuum testing of airtightness.

[0025] Meanwhile, the soft pad 113 is fixedly connected to the arc-shaped clamp 112 and is located on one side of the arc-shaped clamp 112. When the arc-shaped clamp 112 clamps the product, the soft pad 113 will isolate the connection between the arc-shaped clamp 112 and the product. The soft material of the soft pad 113 ensures that the surface of the product is not worn by the arc-shaped clamp 112 while clamping.

[0026] In addition, the support arm 114 is fixedly connected to the base 101 and is located on one side of the base 101. The lifting cylinder 116 is fixedly connected to the support arm 114 and is located on one side of the support arm 114. The telescopic arm 115 is fixedly connected to the output end of the lifting cylinder 116 and is fixedly connected to the vacuum pump 102 and is located on one side of the lifting cylinder 116. During airtightness testing, the output end of the lifting cylinder 116 drives the telescopic arm 115 to slide within the support arm 114. The sliding of the telescopic arm 115 will drive the vacuum pump 102 to lift and lower, so as to align the vacuum pump 102 with the product for vacuum pumping. After the vacuum pump 102 performs vacuum treatment on the product, the data of the product is displayed through the vacuum data display table, and the detected data can be observed quickly and clearly. After the detection is completed, the vacuum pump 102 is lifted to leave enough space, and the product pops out from the installation groove 104, and the product can be easily taken out from the installation groove 104.

[0027] When using the present utility model, the product is inserted into the installation groove 104. The output end of the clamping cylinder 110 will push the connecting rod 111 to gather towards the middle synchronously. One end of the connecting rod 111 is connected to the output end of the clamping cylinder 110, and the other end is connected to the arc-shaped fixture 112. Through the push of the connecting rod 111, the arc-shaped clamping contacts the surface of the product simultaneously. Then, the lifting cylinder 116 drives the telescopic arm 115 to slide on the support arm 114. The sliding of the telescopic arm 115 will drive the vacuum pump 102 to contact the product downward for airtightness detection. After the vacuum pump 102 performs vacuum treatment on the product, the data of the product is displayed through the vacuum data display table, and the detected data can be observed quickly and clearly. After the detection is completed, the vacuum pump 102 is lifted. After the clamping part 109 releases the product, the spring 106 rebounds on the fixed rod 107 according to its own elastic deformation characteristics, pushing the mounting plate 105 to slide upward in the installation groove 104 while the telescopic rod 108 also slides synchronously, always keeping the direction of elastic deformation of the spring 106 perpendicular. The sliding of the mounting plate 105 will push the product out of the surface of the base 101 for easy removal.

[0028] The second embodiment of the present application is as follows:

[0029] Based on the first embodiment, please refer to Figure 4 , in which, Figure 4 is the overall structural schematic diagram of the second embodiment of the present utility model. A gas path airtightness negative pressure testing device provided by the present utility model further includes a support assembly 201. The support assembly 201 includes support legs 202 and moving wheels 203.

[0030] For this specific embodiment, the support legs 202 are fixedly connected to the base 101 and are located on one side of the base 101. The moving wheels 203 are rotatably connected to the support legs 202 and are located on one side of the support legs 202. The support legs 202 support the base 101. When it is necessary to move the device, by applying a thrust to the base 101, the base 101 is pushed to drive the moving wheels 203 to rotate on the support legs 202. The rotation of the moving wheels 203 will drive the overall position to change, so that the device can be easily pushed to the required position.

[0031] When using the present utility model, a pushing force is applied to the base 101 to cause the moving wheels 203 to rotate on the support legs 202, driving the device to a specified position. Then, the product is inserted into the installation groove 104. The output end of the clamping cylinder 110 will push the connecting rod 111 to converge towards the middle synchronously. One end of the connecting rod 111 is connected to the output end of the clamping cylinder 110, and the other end is connected to the arc-shaped fixture 112. Through the pushing of the connecting rod 111, the arc-shaped clamping contacts the surface of the product simultaneously. Then, the lifting cylinder 116 drives the telescopic arm 115 to slide on the support arm 114. The sliding of the telescopic arm 115 will drive the vacuum pump 102 to contact the product downward for airtightness detection. After the vacuum pump 102 performs vacuum treatment on the product, the data of the product is displayed through the vacuum data display table, and the detected data can be observed quickly and clearly. After the detection is completed, the vacuum pump 102 is lifted. After the clamping part 109 releases the product, the spring 106 rebounds on the fixed rod 107 according to its own elastic deformation characteristics, pushing the mounting plate 105 to slide upward in the installation groove 104 while the telescopic rod 108 also slides synchronously, always keeping the direction of elastic deformation of the spring 106 perpendicular. The sliding of the mounting plate 105 will push the product out of the surface of the base 101 for easy removal.

[0032] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A negative pressure test device for air path sealing, comprising a base, a lifting assembly and a vacuum pump, wherein the lifting assembly is arranged on one side of the base, and the vacuum pump is arranged on one side of the lifting assembly, characterized in that: Also included are mounting components; The mounting assembly includes a mounting plate, a spring, a fixing rod, a telescopic rod and a plurality of clamping parts; The base has a mounting groove, which is located on one side of the base; the spring is fixedly connected to the base and is located on one side of the base; the fixing rod is fixedly connected to the base and is located on one side of the base; the telescopic rod is slidably connected to the fixing rod and is located on one side of the fixing rod; the mounting plate is fixedly connected to the spring and is located on one side of the spring; and the plurality of clamping parts are respectively located on one side of the base.

2. A negative pressure test device for air path sealing according to claim 1, characterized in that: The clamping part includes a clamping cylinder, a connecting rod and an arc-shaped clamp. The clamping cylinder is fixedly connected to the base and is located on one side of the base. The connecting rod is fixedly connected to the output end of the clamping cylinder and is located on one side of the clamping cylinder. The arc-shaped clamp is fixedly connected to the connecting rod and is located on one side of the connecting rod.

3. A negative pressure test device for air path sealing as claimed in claim 2, characterized in that: The clamping portion further comprises a soft pad, which is fixedly connected to the arc-shaped clamp and is located on one side of the arc-shaped clamp.

4. A negative pressure test device for air path sealing as claimed in claim 1, characterized in that: The lifting assembly includes a support arm, a telescopic arm and a lifting cylinder. The support arm is fixedly connected to the base and is located on one side of the base. The lifting cylinder is fixedly connected to the support arm and is located on one side of the support arm. The telescopic arm is fixedly connected to the output end of the lifting cylinder and is fixedly connected to the vacuum pump and is located on one side of the lifting cylinder.

5. The negative pressure test device for air path sealing according to claim 1, characterized in that: The air path sealing negative pressure testing device also includes a support assembly, and the support assembly is arranged on one side of the base.

6. A negative pressure test device for air path sealing as claimed in claim 5, characterized in that: The support assembly includes a support leg and a moving wheel. The support leg is fixedly connected to the base and is located on one side of the base. The moving wheel is rotatably connected to the support leg and is located on one side of the support leg.

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