Rapid air tightness detection device for centrifugal pump
The automated centrifugal pump air tightness testing device solves the problems of low testing efficiency and poor accuracy in existing technologies, achieving efficient and safe air tightness testing. It also features a modular design for easy maintenance.
Patent Information
- Application Number
- CN202423151829.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing airtightness testing devices for injection molded pipe fittings rely on manual operation, resulting in low testing efficiency and poor accuracy. Furthermore, traditional mechanical testing structures are susceptible to human error.
An automated testing device was designed, comprising a concave transport testing platform, a testing and processing bracket, an inner testing arc support block, and a sealing component. By combining the concave transport testing platform with a tracked transporter, and utilizing the cooperation of the handling screw module and the concave vertical telescopic block, the centrifugal pump can be stably transported and accurately inserted. Combined with the sealing component and a high-pressure air pump, automated air inflation testing is performed to achieve efficient and accurate air tightness testing.
It improves detection efficiency and accuracy, reduces manual operation, and ensures the safety and reliability of the detection process. The system adopts a modular design, which facilitates maintenance and upgrades.
Smart Images
Figure CN223870255U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of centrifugal pump manufacturing technology, specifically a rapid airtightness testing device for centrifugal pumps. Background Technology
[0002] Injection molding, an indispensable molding method in industrial production, is widely used in the production of rubber and plastic products. Among these, injection molding and die casting are two mainstream technologies that enable the precise manufacture of various injection-molded parts—including packaging materials and various components. However, with the increasing demands for product quality in the manufacturing industry, injection-molded fittings must undergo a series of rigorous product inspections after processing to ensure their finished product quality.
[0003] Among various testing items, airtightness testing is particularly critical. However, current airtightness testing devices for injection molded pipe fittings have significant shortcomings. Many devices still rely on traditional mechanical testing structures, which require operators to directly participate in the airtightness testing process using tools, including multiple steps such as clamping, inflation, and testing. This manual intervention not only reduces testing efficiency but also increases the risk of human error.
[0004] Even more serious is that current airtightness testing mostly employs immersion methods or manual testing. While immersion is intuitive, it is limited by the subjectivity of human operation and observation, often resulting in inaccurate results. Manual testing, on the other hand, is more susceptible to the influence of operator skill, experience, and fatigue, further reducing accuracy. In light of these issues, this case study was developed to address these problems in depth. Utility Model Content
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a centrifugal pump rapid air tightness testing device, comprising: a concave transport testing platform, a testing and processing bracket, and an inner testing arc support block, wherein the inner testing arc support block is installed on the concave transport testing platform, the testing and processing bracket is installed on the concave transport testing platform, and the testing and processing bracket is equipped with a handling and testing structure.
[0006] The transport detection structure includes: a pair of L-shaped detection blocks, a bidirectional threaded rod, a pair of detection threaded tubes, a pair of support bearing blocks, several detection limit shafts, a detection gearbox, a detection drive motor, a pair of convex cylindrical blocks, a transport screw module, a convex vertical telescopic block, a concave vertical telescopic block, two pairs of lifting hydraulic push rods, a detection L-shaped inner shaft tube, a detection outer shaft tube, a high-pressure air pump, and a sealing assembly.
[0007] The inspection and processing bracket has a pair of opposing telescopic clamping slots. A pair of L-shaped inspection blocks are movably inserted into the inner sides of the pair of opposing telescopic clamping slots. A pair of support bearing blocks are mounted on the inspection and processing bracket. A bidirectional threaded rod is inserted into the pair of support bearing blocks. A pair of inspection threaded tubes are inserted into the pair of L-shaped inspection blocks, and the pair of inspection threaded tubes are mounted on the bidirectional threaded rod. Several inspection limiting shafts are inserted into the pair of opposing telescopic clamping slots, and the several inspection limiting shafts are movably inserted into the pair of L-shaped inspection blocks. The inspection gearbox is fitted onto the bidirectional threaded rod. The drive end of the inspection drive motor is connected to the inspection gearbox. A pair of convex cylindrical blocks are respectively mounted on the pair of L-shaped clamping slots. On the L-shaped detection block, the conveying screw module is mounted on the detection processing bracket, the concave vertical telescopic block is mounted on the moving end of the conveying screw module, the convex vertical telescopic block is movably inserted into the inner side of the concave vertical telescopic block, two pairs of lifting hydraulic push rods are installed parallel to each other on the inner side of the concave vertical telescopic block, and the pushing ends of the two pairs of lifting hydraulic push rods are connected to the convex vertical telescopic block, the detection L-shaped inner shaft tube is inserted into the concave vertical telescopic block, the detection outer shaft tube is inserted into the convex vertical telescopic block, and the detection outer shaft tube is movably inserted into the detection L-shaped inner shaft tube, the high-pressure air pump is connected to the detection L-shaped inner shaft tube, and the sealing assembly is mounted on the convex vertical telescopic block and a pair of convex cylindrical blocks;
[0008] It should be noted that, as described above, the centrifugal pump housing is transported via a tracked conveyor on a concave transport inspection platform. The operation of the transport screw module drives the concave vertical telescopic block on its moving end to perform stable horizontal extension and retraction, moving the concave vertical telescopic block to the top of the centrifugal pump on the tracked conveyor. The extension and retraction of two pairs of lifting hydraulic push rods inside the concave vertical telescopic block causes the convex vertical telescopic block on its pushing end to perform vertical lifting and retraction, allowing the convex vertical telescopic block to move stably along the inner side of the concave vertical telescopic block. The convex vertical telescopic block is inserted into the inner side of the pump housing, and the sealing assembly expands the space between the pump and the convex vertical telescopic block, thereby causing the centrifugal pump to expand and be transported to the inner inspection arc support block. Simultaneously, through… The detection drive motor operates, driving the detection gearbox on its drive end. This gearbox rotates the bidirectional threaded rod inside, which in turn rotates a pair of detection threaded tubes. These tubes then cause a pair of L-shaped detection blocks to extend and retract relative to each other. This causes a pair of convex vertical telescopic blocks on the L-shaped detection blocks to be inserted into the inner ends of both sides of the centrifugal pump. Simultaneously, a sealing assembly expands and seals the three holes on the centrifugal pump. A high-pressure air pump inflates the outer detection shaft tube, which in turn inflates the inside of the centrifugal pump, thus pressurizing the pump and initiating the detection process. The sealing pressure of the centrifugal pump is adjusted by the sealing assembly, automatically releasing pressure when a certain pressure is reached.
[0009] Preferably, the sealing assembly includes: two pairs of sealing inflatable airbags, a pair of inflatable limiting pumps, a pair of expansion limiting tubes, a pair of fitted airbags, a pair of compression drainage shaft tubes, a pair of fitted annular electromagnets, a pair of fitted annular magnets, and a pair of expansion sealing drainage tubes.
[0010] Two pairs of sealed inflatable airbags are respectively installed on a pair of convex cylindrical blocks and a pair of convex vertical telescopic blocks, and the sealed inflatable airbags are inserted into the detection outer shaft tube. A pair of expansion limiting tubes are respectively inserted into a pair of L-shaped detection blocks and a pair of convex cylindrical blocks. A pair of inflation limiting pumps are respectively installed on a pair of expansion limiting tubes. A pair of extrusion grooves are provided on the convex vertical telescopic blocks. A pair of fitted airbags are respectively installed inside the pair of extrusion grooves. A pair of extrusion drainage shaft tubes are respectively inserted into the pair of extrusion grooves. A pair of fitted annular electromagnets are respectively installed on the pair of extrusion grooves. A pair of fitted annular magnets are respectively installed on a pair of fitted airbags. A pair of expansion sealing drainage tubes are respectively inserted into the pair of extrusion grooves, and the pair of expansion sealing drainage tubes are respectively connected to a pair of fitted airbags and a pair of sealed inflatable airbags.
[0011] It should be noted that, as described above, the inflation limiting pump inflates a pair of expansion limiting tubes, which in turn inflates a pair of sealing airbags. This inflates the airbags on the pair of convex cylindrical blocks, thus achieving a sealing effect. Similarly, energizing the set ring electromagnet causes it to magnetically repel the set ring magnet, which in turn drives the set ring magnet to inflate the set airbag. The airbag then guides the gas to the expansion of another pair of sealing airbags, thereby causing the detection outer shaft tube and the detection L-shaped inner shaft tube to expand and seal, achieving sealing and drainage.
[0012] Preferably, the inspection and processing bracket is equipped with a scanning camera.
[0013] Preferably, a pair of tracked transporters are provided on the concave transport testing platform.
[0014] Preferably, the inner detection arc support block is provided with a plurality of support arc blocks.
[0015] Preferably, the outer shaft tube for detection is equipped with a pressure sensor and a flow sensor.
[0016] Beneficial effects
[0017] This invention provides a rapid airtightness testing device for centrifugal pumps. It offers the following advantages: This rapid airtightness testing device for centrifugal pumps, through the combination of a concave transport testing platform and a tracked transporter, can efficiently and stably transport the centrifugal pump housing. The cooperation between the transport screw module and the concave vertical telescopic block ensures horizontal stability and vertical lifting accuracy during transport; the convex vertical telescopic block can be precisely inserted into the inner side of the pump body and achieves a tight connection with the pump body through a sealing component, ensuring the stability and accuracy of the centrifugal pump during testing; through the design of the sealing component, the sealing pressure can be flexibly adjusted according to different centrifugal pumps and testing requirements, achieving efficient sealing of the centrifugal pump and improving the accuracy and reliability of the test; the entire system adopts automated operation, such as driving the testing gearbox to rotate through the testing drive motor and inflating the testing outer shaft tube with a high-pressure air pump, reducing manual operation and improving work efficiency and safety. The system is highly reliable and employs a multi-layered sealing design, including sealing the centrifugal pump through sealing components and sealing the convex cylindrical block through expansion limiting tubes and sealed inflation bladders, ensuring sealing and safety during the testing process. When a certain pressure is reached, the system automatically depressurizes and uses the magnetic repulsion of a set of circular electromagnets and a set of circular magnets to achieve gas diversion and sealing, ensuring the safety and accuracy of the testing process. The system uses a high-pressure inflation pump to pressurize the inside of the centrifugal pump, enabling comprehensive testing of the pump's internal structure and ensuring its quality and reliability. The system's modular design facilitates maintenance and upgrades, improving its lifespan and flexibility. Attached Figure Description
[0018] Figure 1 This is a front sectional view of the centrifugal pump rapid airtightness testing device described in this utility model.
[0019] Figure 2 for Figure 1 A magnified view of the letter "A" in the image.
[0020] In the diagram: 1. Concave transport inspection table; 2. Inspection and processing bracket; 3. Inner inspection arc support block; 4. L-shaped inspection block; 5. Bidirectional threaded rod; 6. Inspection threaded tube; 7. Support bearing block; 8. Inspection limit shaft; 9. Inspection gearbox; 10. Inspection drive motor; 11. Convex cylindrical block; 12. Handling screw module; 13. Convex vertical telescopic block; 14. Concave vertical telescopic block; 15. Lifting hydraulic push rod; 16. Inspection L-shaped inner shaft tube; 17. Inspection outer shaft tube; 18. High-pressure air pump. Detailed Implementation
[0021] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.
[0023] Example
[0024] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-2As shown, the inner detection arc support block 3 is installed on the concave transport detection table 1, and the detection processing bracket 2 is installed on the concave transport detection table 1. The detection processing bracket 2 has a transport detection structure mounted on it. The transport detection structure includes: a pair of L-shaped detection blocks 4, a bidirectional threaded rod 5, a pair of detection threaded tubes 6, a pair of support bearing blocks 7, several detection limit shafts 8, a detection gearbox 9, a detection drive motor 10, a pair of convex cylindrical blocks 11, a transport screw module 12, a convex vertical telescopic block 13, a concave vertical telescopic block 14, two pairs of lifting hydraulic push rods 15, a detection L-shaped inner shaft tube 16, a detection outer shaft tube 17, and a high-pressure charging... The equipment includes an air pump 18 and a sealing assembly; a pair of opposing telescopic clamping grooves are provided on the inspection and processing bracket 2; a pair of L-shaped inspection blocks 4 are respectively movably inserted into the inner side of the pair of opposing telescopic clamping grooves; a pair of support bearing blocks 7 are installed on the inspection and processing bracket 2; a bidirectional threaded rod 5 is inserted into the pair of support bearing blocks 7; a pair of inspection threaded tubes 6 are respectively inserted into the pair of L-shaped inspection blocks 4, and the pair of inspection threaded tubes 6 are installed on the bidirectional threaded rod 5; and several inspection limiting shafts 8 are respectively inserted into the pair of opposing telescopic clamping grooves, and several inspection limiting shafts 8 are respectively movably inserted into the pair of L-shaped inspection blocks 4. The detection gearbox 9 is mounted on the bidirectional threaded rod 5. The driving end of the detection drive motor 10 is connected to the detection gearbox 9. A pair of convex cylindrical blocks 11 are respectively mounted on a pair of L-shaped detection blocks 4. The conveying screw module 12 is mounted on the detection processing bracket 2. The concave vertical telescopic block 14 is mounted on the moving end of the conveying screw module 12. The convex vertical telescopic block 13 is movably inserted into the inner side of the concave vertical telescopic block 14. Two pairs of lifting hydraulic push rods 15 are installed parallel to each other on the inner side of the concave vertical telescopic block 14, and the pushing ends of the two pairs of lifting hydraulic push rods 15 are connected to the convex vertical telescopic block. On the 13, the detection L-shaped inner shaft tube 16 is inserted into the concave vertical telescopic block 14, the detection outer shaft tube 17 is inserted into the convex vertical telescopic block 13, and the detection outer shaft tube 17 is movably inserted into the detection L-shaped inner shaft tube 16. The high-pressure air pump 18 is connected to the detection L-shaped inner shaft tube 16. The sealing assembly is installed on the convex vertical telescopic block 13 and a pair of convex cylindrical blocks 11. The sealing assembly includes: two pairs of sealing airbags, a pair of air-limiting pumps, a pair of expansion limiting tubes, a pair of fitted airbags, a pair of extrusion drainage shaft tubes, a pair of fitted annular electromagnets, a pair of fitted annular magnets, and a pair of expansion sealing drainage tubes.Two pairs of sealed inflatable airbags are respectively installed on a pair of convex cylindrical blocks 11 and a pair of convex vertical telescopic blocks 13, and the sealed inflatable airbags are inserted into the detection outer shaft tube 17. A pair of expansion limiting tubes are respectively inserted into a pair of L-shaped detection blocks 4 and a pair of convex cylindrical blocks 11. A pair of inflation limiting pumps are respectively installed on a pair of expansion limiting tubes. A pair of extrusion grooves are provided on the convex vertical telescopic block 13. A pair of sleeve airbags are respectively installed inside the pair of extrusion grooves. A pair of extrusion drainage shaft tubes are respectively inserted into the pair of extrusion grooves. A pair of sleeve airbags are respectively installed inside the pair of extrusion grooves. A pair of circular electromagnets are respectively installed on a pair of extrusion grooves; a pair of assembled circular magnets are respectively installed on a pair of assembled airbags; a pair of expansion sealing drain tubes are respectively inserted into a pair of extrusion grooves, and the pair of expansion sealing drain tubes are respectively connected to a pair of assembled airbags and a pair of sealing inflation airbags; a scanning camera is provided on the detection and processing bracket 2; a pair of tracked conveyors are provided on the concave transport detection table 1; several supporting arc blocks are provided on the inner detection arc support block 3; a pressure sensor and a flow sensor are provided on the detection outer shaft tube 17.
[0025] According to the appendix Figure 1-2It is concluded that the centrifugal pump housing is transported by a tracked conveyor on the concave transport testing platform 1. The operation of the transport screw module 12 drives the concave vertical telescopic block 14 on the moving end of the transport screw module 12 to perform stable horizontal extension and retraction, moving the concave vertical telescopic block 14 to the top of the centrifugal pump on the tracked conveyor. The extension and retraction of two pairs of lifting hydraulic push rods 15 on the inner side of the concave vertical telescopic block 14 drives the convex vertical telescopic block 13 on the pushing end of the two pairs of lifting hydraulic push rods 15 to perform vertical lifting and retraction, causing the convex vertical telescopic block 13 to move steadily along the inner side of the concave vertical telescopic block 14. The pump body is raised and lowered by inserting a convex vertical telescopic block 13 into the inner side of the pump body. A sealing assembly expands the space between the pump and the convex vertical telescopic block 13, causing the centrifugal pump to expand and move to the inner detection arc support block 3. Simultaneously, the detection drive motor 10 operates, driving the detection gearbox 9 on its drive end. The detection gearbox 9 rotates the bidirectional threaded rod 5 inside, which in turn rotates a pair of detection threaded tubes 6. These tubes then rotate a pair of L-shaped... The detection blocks 4 extend and retract relative to each other, thereby causing the pair of convex vertical telescopic blocks 13 on the pair of L-shaped detection blocks 4 to be movably inserted into the inner ends of both sides of the centrifugal pump. At the same time, the sealing assembly expands and seals the three holes on the centrifugal pump. Simultaneously, the high-pressure air pump 18 inflates the detection outer shaft tube 17, which inflates the inside of the centrifugal pump, thereby pressurizing the inside of the centrifugal pump and initiating the detection. The sealing pressure of the centrifugal pump is adjusted by the sealing assembly, thereby automatically releasing pressure when a certain pressure is reached. The air inflation limit pump further inflates the pair of convex vertical telescopic blocks 13. The limiting tubes are inflated, and a pair of expansion limiting tubes inflate a pair of sealing airbags, thereby causing the airbags on a pair of convex cylindrical blocks 11 to expand, thus achieving a sealing effect. Similarly, the set ring electromagnet is energized, and the set ring electromagnet magnetically repels the set ring magnet, thereby causing the set ring magnet to drive the set ring airbag on it to expand. The set airbag guides the gas to the expansion of another pair of sealing airbags, thereby causing the detection outer shaft tube 17 and the detection L-shaped inner shaft tube 16 to expand and seal, thus achieving sealing and drainage.
[0026] 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. A rapid airtightness testing device for a centrifugal pump, comprising: A concave transport inspection platform, an inspection and processing bracket, and an inner inspection arc support block are characterized in that the inner inspection arc support block is installed on the concave transport inspection platform, the inspection and processing bracket is installed on the concave transport inspection platform, and a handling and inspection structure is installed on the inspection and processing bracket. The transport detection structure includes: a pair of L-shaped detection blocks, a bidirectional threaded rod, a pair of detection threaded tubes, a pair of support bearing blocks, several detection limit shafts, a detection gearbox, a detection drive motor, a pair of convex cylindrical blocks, a transport screw module, a convex vertical telescopic block, a concave vertical telescopic block, two pairs of lifting hydraulic push rods, a detection L-shaped inner shaft tube, a detection outer shaft tube, a high-pressure air pump, and a sealing assembly. The inspection and processing bracket has a pair of opposing telescopic clamping slots. A pair of L-shaped inspection blocks are movably inserted into the inner sides of the pair of opposing telescopic clamping slots. A pair of support bearing blocks are mounted on the inspection and processing bracket. A bidirectional threaded rod is inserted into the pair of support bearing blocks. A pair of inspection threaded tubes are inserted into the pair of L-shaped inspection blocks, and the pair of inspection threaded tubes are mounted on the bidirectional threaded rod. Several inspection limiting shafts are inserted into the pair of opposing telescopic clamping slots, and the several inspection limiting shafts are movably inserted into the pair of L-shaped inspection blocks. The inspection gearbox is fitted onto the bidirectional threaded rod. The drive end of the inspection drive motor is connected to the inspection gearbox. A pair of convex cylindrical blocks are respectively mounted on the pair of L-shaped clamping slots. On the L-shaped detection block, the conveying screw module is mounted on the detection and processing bracket, the concave vertical telescopic block is mounted on the moving end of the conveying screw module, the convex vertical telescopic block is movably inserted into the inner side of the concave vertical telescopic block, two pairs of lifting hydraulic push rods are mounted parallel to each other on the inner side of the concave vertical telescopic block, and the pushing ends of the two pairs of lifting hydraulic push rods are connected to the convex vertical telescopic block, the detection L-shaped inner shaft tube is inserted into the concave vertical telescopic block, the detection outer shaft tube is inserted into the convex vertical telescopic block, and the detection outer shaft tube is movably inserted into the detection L-shaped inner shaft tube, the high-pressure air pump is connected to the detection L-shaped inner shaft tube, and the sealing assembly is mounted on the convex vertical telescopic block and a pair of convex cylindrical blocks.
2. The centrifugal pump rapid airtightness testing device according to claim 1, characterized in that, The sealing assembly includes: two pairs of sealing inflatable airbags, a pair of inflatable limiting pumps, a pair of expansion limiting tubes, a pair of fitted airbags, a pair of compression drainage shaft tubes, a pair of fitted annular electromagnets, a pair of fitted annular magnets, and a pair of expansion sealing drainage tubes. Two pairs of sealed inflatable airbags are respectively installed on a pair of convex cylindrical blocks and a pair of convex vertical telescopic blocks, and the sealed inflatable airbags are inserted into the detection outer shaft tube. A pair of expansion limiting tubes are respectively inserted into a pair of L-shaped detection blocks and a pair of convex cylindrical blocks. A pair of inflation limiting pumps are respectively installed on a pair of expansion limiting tubes. A pair of extrusion grooves are provided on the convex vertical telescopic blocks. A pair of fitted airbags are respectively installed inside the pair of extrusion grooves. A pair of extrusion drainage shaft tubes are respectively inserted into the pair of extrusion grooves. A pair of fitted annular electromagnets are respectively installed on the pair of extrusion grooves. A pair of fitted annular magnets are respectively installed on a pair of fitted airbags. A pair of expansion sealing drainage tubes are respectively inserted into the pair of extrusion grooves, and the pair of expansion sealing drainage tubes are respectively connected to a pair of fitted airbags and a pair of sealed inflatable airbags.
3. The centrifugal pump rapid airtightness testing device according to claim 2, characterized in that, The inspection and processing support is equipped with a scanning camera.
4. The centrifugal pump rapid airtightness testing device according to claim 3, characterized in that, A pair of tracked transporters are installed on the concave transport testing platform.
5. The centrifugal pump rapid airtightness testing device according to claim 4, characterized in that, The inner detection arc support block is provided with several supporting arc blocks.
6. The centrifugal pump rapid airtightness testing device according to claim 5, characterized in that, The detection outer shaft tube is equipped with a pressure sensor and a flow sensor.