A ton bucket product quality detection leakage mechanism
By introducing a synchronous descent design of the top limiting frame and the downward push rod in the leak detection mechanism of the ton container, the detection error caused by the shrinkage and clearance of the sealing push rod is solved, and higher detection accuracy is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI FUJIANG PLASTIC IND CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-06-02
AI Technical Summary
Existing leak detection mechanisms for ton containers are prone to errors in their results, particularly due to the sealing push rod needing to retract and make room during the detection process, leading to issues such as excessively high or low air pressure.
A leak detection mechanism for ton containers was designed. The mechanism employs a top limiting frame and a downward push rod that descend synchronously. The sealing gasket and the top limiting frame press down on the container opening and the upper surface of the ton container, respectively. The sealing push rod does not retract or move. By setting the top limiting frame and the downward push rod to descend synchronously, and the sealing gasket and the top limiting frame pressing down on the container opening and the upper surface of the ton container, internal pressure instability in the ton container is prevented from occurring due to reasons other than damage and leakage.
This reduces errors caused by operational issues, such as excessively high or low air pressure, improves the accuracy of test results, and ensures the reliability of the test results.
Smart Images

Figure CN224317255U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of ton barrel testing equipment, specifically a ton barrel product quality testing leak detection mechanism. Background Technology
[0002] A tonne container is a container used for the large-scale storage and transportation of liquids or granular materials. Common tonne containers are made of plastic and are characterized by being lightweight, durable, low-cost, and suitable for most chemical liquids. They also feature standardized size designs for easy transportation and storage.
[0003] During production, IBC containers undergo multiple inspections to ensure product quality, including a leak test, which is performed using a leak detection mechanism. Common leak detection mechanisms confine the IBC container within a limited space using a restraining frame and side restraints. A sealing push rod moves a sealing gasket downwards to press against the container's opening, sealing it. Compressed air is then introduced into the IBC container, and the internal air pressure is checked to determine if the container's leak resistance is constant.
[0004] The ton container needs to pass smoothly through the limiting frame. There are movable gaps between the inner wall of the limiting frame and the ton container and its opening. During the actual testing process, after compressed air is introduced into the ton container, the plastic ton container expands under the air pressure. The four side walls are directly squeezed against the limiting frame and the side limiting frame. The top of the ton container is not completely restricted, and the upper surface of the ton container will expand upward. At this time, it is necessary to control the sealing push rod to retract upward a small distance to make way, so as to prevent the upper surface of the ton container located around the opening from expanding upward due to the unchanged position of the opening, which would cause deformation of the opening and leakage, as well as excessive bending and damage to the connection between the opening and the upper surface of the ton container.
[0005] However, the extension and retraction of the sealing push rod have strict requirements on the extension distance. Because the sealing push rod needs to retract to make way, the difficulty of maintaining a consistent stroke during numerous tests and countless extensions and retractions is greatly increased. Excessive extension or insufficient retraction will result in a high internal air pressure, while insufficient extension or excessive retraction will result in a low internal air pressure. Since the testing process ends instantly, if a low air pressure is detected, it is easy to be misjudged as a leak. This can easily lead to errors in the test results during a large number of tests. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides a leak detection mechanism for ton containers, which solves the problem that existing leak detection mechanisms for ton containers require the sealing push rod to retract and make room during the detection process, leading to easy detection errors.
[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0008] A leak detection mechanism for ton containers includes a limiting frame with open sides for limiting the position of the ton container. A sealing push rod is mounted on the top center of the limiting frame via a fixed central bracket. A pressure plate is fixed to the lower end of the piston rod of the sealing push rod, and a sealing gasket is fixed to the lower surface of the pressure plate. A top limiting frame is horizontally arranged above the interior of the limiting frame. Both the top limiting frame and the top center of the limiting frame have clearance holes corresponding to the positions of the sealing gasket and the pressure plate. Downward push rods are mounted on the top of the limiting frame near the four corners via fixed side brackets. The lower end of the piston rod of the downward push rod passes through the top of the limiting frame and is fixedly connected to the top limiting frame. The sealing push rod and the downward push rod are of the same model and size. The distance between the top limiting frame and the upper surface of the ton container is equal to the distance between the sealing gasket and the opening of the ton container.
[0009] Preferably, it also includes side limiting frames that can move up and down on both sides of the limiting frame. The front and back edges of the side limiting frames are respectively movably engaged with limiting grooves fixed to the side of the limiting frame. The front and back of the limiting grooves are each equipped with lifting push rods connected to the side limiting frames.
[0010] Preferably, the limiting frame, the top limiting frame, and the side limiting frame are all frame structures made of welded square tubes.
[0011] Preferably, it also includes an intake pipe, an exhaust pipe, and a pressure sensor mounted on the pressure plate, wherein the pressure plate and the sealing gasket are provided with through holes that connect vertically at the positions corresponding to the intake pipe, the exhaust pipe, and the pressure sensor.
[0012] Preferably, it also includes solenoid valves installed on the intake pipe and exhaust pipe.
[0013] Preferably, it also includes a guide post that is vertically fixed to the pressure plate, and the guide post is movably inserted into the central support.
[0014] Preferably, the sealing gasket is a rubber pad.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] This invention, by setting a top limiting frame and a downward pushing rod, allows the sealing pushing rod and the downward pushing rod to descend synchronously during the sealing test. The sealing gasket and the top limiting frame press down on the barrel opening and the upper surface of the ton barrel, respectively. During the test, the sealing pushing rod does not retract to make way, preventing unstable internal air pressure in the ton barrel due to reasons other than damage and leakage. This reduces errors caused by operational problems resulting in excessively high or low air pressure, improves the accuracy of the test results, and solves the problem that existing ton barrel product quality testing leak detection mechanisms require the sealing pushing rod to retract to make way during the test, which easily leads to detection errors. Attached Figure Description
[0017] Figure 1 This is a front view of the overall structure of this utility model;
[0018] Figure 2 This is a front view of the top limiting frame, sealing push rod, and downward push rod of this utility model;
[0019] Figure 3 This is a top view of the limiting frame of this utility model;
[0020] Figure 4 This is a top view of the top limiting frame and the downward push rod of this utility model.
[0021] In the diagram: 1. Tonnage container; 2. Restriction frame; 3. Central support; 4. Sealing push rod; 5. Pressure plate; 6. Sealing gasket; 7. Top restriction frame; 8. Clearance hole; 9. Side support; 10. Downward push rod; 11. Tonnage opening; 12. Side restriction frame; 13. Limiting groove; 14. Lifting push rod; 15. Inlet pipe; 16. Exhaust pipe; 17. Pressure sensor; 18. Solenoid valve; 19. Guide column. Detailed Implementation
[0022] 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.
[0023] like Figure 1-4 As shown, this utility model provides a technical solution: a leak detection mechanism for ton barrel products, including a limiting frame 2 with open sides for limiting the position of the ton barrel 1, a sealing push rod 4 is installed at the top center of the limiting frame 2 through a fixed central bracket 3, a pressure plate 5 is fixed at the lower end of the piston rod of the sealing push rod 4, and a guide post 19 is vertically fixed on the pressure plate 5, the guide post 19 is movably inserted into the central bracket 3.
[0024] A top limiting frame 7 is horizontally arranged inside the upper part of the limiting frame 2. A sealing gasket 6 is fixed on the lower surface of the pressure plate 5. The sealing gasket 6 is a rubber pad. Both the top limiting frame 7 and the top center of the limiting frame 2 are provided with clearance holes 8 corresponding to the positions of the sealing gasket 6 and the pressure plate 5.
[0025] It also includes side limiting frames 12 that can move up and down on both sides of the limiting frame 2. The front and back edges of the side limiting frames 12 are respectively movably engaged with limiting grooves 13 fixed to the side of the limiting frame 2. The front and back of the limiting grooves 13 are respectively equipped with lifting push rods 14 connected to the side limiting frames 12. The limiting frame 2, the top limiting frame 7 and the side limiting frames 12 are all frame structures welded from square tubes.
[0026] It also includes an intake pipe 15, an exhaust pipe 16 and a pressure sensor 17 installed on the pressure plate 5. The pressure plate 5 and the sealing gasket 6 are provided with through holes that connect the upper and lower parts at the positions corresponding to the intake pipe 15, the exhaust pipe 16 and the pressure sensor 17. It also includes a solenoid valve 18 installed on the intake pipe 15 and the exhaust pipe 16.
[0027] Near the four corners of the top of the limiting frame 2, a downward push rod 10 is installed by a fixed side bracket 9. The lower end of the piston rod of the downward push rod 10 passes through the top of the limiting frame 2 and is fixedly connected to the top limiting frame 7. The sealing push rod 4 and the downward push rod 10 are the same in model and size. The distance between the top limiting frame 7 and the upper surface of the ton 1 is equal to the distance between the sealing gasket 6 and the opening 11 of the ton 1.
[0028] Working principle:
[0029] By setting a top limiting frame 7 and a downward pressing rod 10, the sealing push rod 4 and the downward pressing rod 10 are of the same model and size. The distance between the top limiting frame 7 and the upper surface of the ton 1 is equal to the distance between the sealing gasket 6 and the mouth 11 of the ton 1. When testing the seal, the sealing push rod 4 and the downward pressing rod 10 descend synchronously. The sealing gasket 6 and the top limiting frame 7 press down on the mouth 11 and the upper surface of the ton 1 respectively, and also restrict the expansion of the top of the ton 1. During the test, the sealing push rod 4 does not retract to make room, to prevent the internal air pressure of the ton 1 from being unstable due to reasons other than damage and leakage, to reduce the error of high or low air pressure caused by operational problems, and to improve the accuracy of the test results.
[0030] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0031] 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 ton bucket product quality detection leakage mechanism, comprising a limiting frame (2) for limiting a ton bucket (1) which is open on both sides, a sealing push rod (4) is installed at the top center of the limiting frame (2) through a fixed central support (3), the lower end of the piston rod of the sealing push rod (4) is fixed with a pressing plate (5), and the lower surface of the pressing plate (5) is fixed with a sealing gasket (6), characterized in that: A top limiting frame (7) is horizontally arranged above the interior of the limiting frame (2). Both the top limiting frame (7) and the top center of the limiting frame (2) are provided with clearance holes (8) corresponding to the positions of the sealing gasket (6) and the pressure plate (5). At the top of the limiting frame (2) near the four corners, a downward push rod (10) is installed by a fixed side bracket (9). The lower end of the piston rod of the downward push rod (10) passes through the top of the limiting frame (2) and is fixedly connected to the top limiting frame (7). The sealing push rod (4) and the downward push rod (10) are the same in model and size. The distance between the top limiting frame (7) and the upper surface of the ton (1) is equal to the distance between the sealing gasket (6) and the mouth (11) of the ton (1).
2. A ton bucket product quality detection leak mechanism according to claim 1, wherein: It also includes side limiting frames (12) that can move up and down on both sides of the limiting frame (2). The front and back edges of the side limiting frames (12) are respectively movably engaged with limiting grooves (13) fixed on the side of the limiting frame (2). The front and back of the limiting grooves (13) are respectively equipped with lifting push rods (14) connected to the side limiting frames (12).
3. A ton bucket product quality detection leak mechanism according to claim 2, wherein: The limiting frame (2), the top limiting frame (7) and the side limiting frame (12) are all frame structures made of welded square tubes.
4. A ton bucket product quality detection leak mechanism according to claim 1, wherein: It also includes an intake pipe (15), an exhaust pipe (16) and a pressure sensor (17) installed on the pressure plate (5). The pressure plate (5) and the sealing gasket (6) are provided with through holes that connect the upper and lower parts at the positions corresponding to the intake pipe (15), the exhaust pipe (16) and the pressure sensor (17).
5. A tonne bucket product quality detection leak mechanism according to claim 4, wherein: It also includes solenoid valves (18) installed on the intake pipe (15) and the exhaust pipe (16).
6. A ton bucket product quality detection leak mechanism as claimed in claim 1, wherein: It also includes a guide post (19) that is vertically fixed on the pressure plate (5), and the guide post (19) is movably inserted into the central support (3).
7. A ton bucket product quality detection leak mechanism as claimed in claim 1, wherein: The sealing gasket (6) is a rubber pad.