Negative pressure detection equipment for steel drum

Abstract

The utility model relates to steel drum negative pressure detection equipment, in particular to the technical field of steel drum sealing performance detection equipment. The steel drum testing device comprises an input roller way, an output roller way, a testing station, a drum pushing mechanism, a mounting frame, a sealing mechanism, a drum blocking mechanism, a hinge piece and a fixing plate, and a plurality of drum pushing mechanisms used for pushing steel drums to the testing roller way are mounted on one side of the input roller way. The number of the barrel pushing mechanisms is consistent with the number of the testing stations, the barrel pushing mechanisms and the testing stations are arranged in a one-to-one correspondence mode, the mounting frame is arranged over each testing roller way in a crossing mode, and the mounting frame is vertically and downwards provided with the sealing mechanism used for sealing the steel barrels; the two sides of each mounting frame are provided with the barrel blocking mechanisms used for limiting the steel barrels, and through parallel detection of multiple test stations, the pneumatic barrel pushing mechanism, the self-adaptive barrel blocking assemblies and the efficient sealing structure, the detection efficiency and accuracy are remarkably improved.

Description

A negative pressure detection device for steel drums Technical Field

[0001] This utility model relates to the technical field of steel drum sealing test equipment, and in particular to a steel drum negative pressure test equipment. Background Technology

[0002] As industrial storage containers, the airtightness of steel drums directly affects the safety of the stored substances. Traditional testing methods often rely on manual visual inspection or single-station testing, which suffers from low efficiency and high error rates. Existing multi-station automated testing equipment has a complex structure and insufficient stability in the positioning and sealing of steel drums, affecting the reliability of the test results. Summary of the Invention

[0003] (1) Technical solution

[0004] To solve the above-mentioned technical problems, this utility model provides a steel drum negative pressure detection device, including an input roller conveyor, an output roller conveyor, a testing station, a drum pushing mechanism, a mounting frame, a sealing mechanism, a drum blocking mechanism, a hinge, and a fixing plate. The input roller conveyor and the output roller conveyor are arranged in parallel. A plurality of testing stations are provided between the input roller conveyor and the output roller conveyor. Each testing station is provided with a corresponding testing roller conveyor above it. A plurality of drum pushing mechanisms for pushing steel drums to the testing roller conveyor are installed on one side of the input roller conveyor. The number of drum pushing mechanisms is consistent with the number of testing stations and is arranged in a one-to-one correspondence. A mounting frame is horizontally spanned directly above each testing roller conveyor. A sealing mechanism for sealing the steel drum is vertically installed downward on the mounting frame. A drum blocking mechanism for limiting the position of the steel drum is provided on both sides of each mounting frame.

[0005] Preferably, the barrel pushing mechanism includes a first cylinder, a first piston rod, a connecting block, and a push plate. The first cylinder is installed on one side of the input roller conveyor. One end of the first piston rod of the first cylinder faces the test station and is connected to one side of the connecting block. The push plate is connected to the other side of the connecting block.

[0006] Preferably, the sealing mechanism includes a second cylinder, a second piston rod, and a sealing pressure plate. The second cylinder is mounted on the top of the mounting bracket. The second piston rod of the second cylinder is arranged downward and its lower end passes through the top of the mounting bracket and is connected to the top of the sealing pressure plate. A vacuum port is provided on the top of the sealing pressure plate.

[0007] Preferably, the barrel-blocking mechanism includes two barrel-blocking assemblies, which are arranged in a V-shape, and one end of each barrel-blocking assembly is hinged to a fixing plate on the side wall of the mounting frame via a hinge.

[0008] Preferably, the stop assembly includes a sleeve, a spring, a connecting rod, and a roller. One end of the sleeve is connected to the hinge, one end of the spring is fixed to the inner wall of one end of the sleeve, the other end of the spring is connected to one end of the connecting rod, and the other end of the connecting rod passes through the other end of the sleeve and is fitted with the roller.

[0009] Preferably, one end of the test roller conveyor is connected to the input roller conveyor, and the other end of the test roller conveyor is connected to the output roller conveyor.

[0010] (2) Beneficial effects

[0011] This utility model provides a negative pressure detection device for steel drums. Compared with the prior art, this utility model has the following advantages:

[0012] 1. Multi-station parallel testing: Multiple testing stations operate simultaneously, significantly improving testing efficiency;

[0013] 2. Precise positioning: The V-shaped barrel-stop mechanism, combined with spring buffer, enables the steel barrel to self-adaptively limit its movement without damage, achieving centered fixation and improving detection accuracy;

[0014] 3. High-efficiency sealing: The pneumatically driven sealing pressure plate, combined with the elastic sealing ring, ensures reliable sealing during the testing process. Attached Figure Description

[0015] Figure 1 is a top view of this utility model.

[0016] Figure 2 is a side view of this utility model.

[0017] Figure 3 is a schematic diagram of the structure of the barrel-stopping mechanism of this utility model.

[0018] The attached figures are labeled as follows: 1-Input roller conveyor, 2-Output roller conveyor, 3-Testing station, 4-Testing roller conveyor, 5-Pushing mechanism, 51-First cylinder, 52-First piston rod, 53-Connecting block, 54-Push plate, 6-Mounting bracket, 7-Sealing mechanism, 71-Second cylinder, 72-Second piston rod, 73-Sealing pressure plate, 731-Vacuum port, 8-Bug blocking mechanism, 81-Sleeve, 82-Spring, 83-Connecting rod, 84-Roller, 9-Hinge, 10-Fixing plate, 11-Steel drum. Detailed Implementation

[0019] The present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0020] As shown in Figures 1-3, the negative pressure testing equipment for steel drums according to this utility model includes an input roller conveyor 1, an output roller conveyor 2, a testing station 3, a drum pushing mechanism 5, a mounting frame 6, a sealing mechanism 7, a drum blocking mechanism 8, a hinge 9, and a fixing plate 10. The input roller conveyor 1 and the output roller conveyor 2 are arranged in parallel. Several testing stations 3 are provided between the input roller conveyor 1 and the output roller conveyor 2. A testing roller conveyor 4 is provided above each testing station 3. Several drum pushing mechanisms 5 are installed on one side of the input roller conveyor 1 for pushing steel drums 11 to the testing roller conveyor 4. The number of drum pushing mechanisms 5 is the same as the number of testing stations 3 and they are arranged in a one-to-one correspondence. The mounting frame 6 spans horizontally above each testing roller conveyor 4. A sealing mechanism 7 for sealing the steel drum 11 is installed vertically downward on the mounting frame 6. A drum blocking mechanism 8 for limiting the position of the steel drum 11 is provided on both sides of each mounting frame 6.

[0021] The barrel pushing mechanism 5 includes a first cylinder 51, a first piston rod 52, a connecting block 53, and a push plate 54. The first cylinder 51 is installed on one side of the input roller conveyor 1. One end of the first piston rod 52 of the first cylinder 51 faces the test station 3 and is connected to one side of the connecting block 53. The push plate 54 is connected to the other side of the connecting block 53.

[0022] The sealing mechanism 7 includes a second cylinder 71, a second piston rod 72, and a sealing pressure plate 73. The second cylinder 71 is mounted on the top of the mounting frame 6. The second piston rod 72 of the second cylinder 71 is positioned downwards, with its lower end passing through the top of the mounting frame 6 and connecting to the top of the sealing pressure plate 73. An elastic sealing ring (not shown) is provided at the bottom of the sealing pressure plate 73. A vacuum port 731 is provided on the top of the sealing pressure plate 73, which is connected to an external vacuuming device. During testing, the second cylinder 71 drives the sealing pressure plate 73 to press down, tightly fitting it against the opening of the steel drum 11 to form a sealed cavity. Air is extracted through the vacuum port 731 to test the negative pressure performance of the steel drum.

[0023] The barrel-blocking mechanism 8 includes two barrel-blocking assemblies, which are arranged in a V-shape. One end of each barrel-blocking assembly is hinged to the fixing plate 10 on the side wall of the mounting frame 6 via a hinge 9.

[0024] The barrel-stopping assembly includes a sleeve 81, a spring 82, a connecting rod 83, and a roller 84. One end of the sleeve 81 is connected to the hinge 9. One end of the spring 82 is fixed to the inner wall of one end of the sleeve 81, and the other end of the spring 82 is connected to one end of the connecting rod 83. The other end of the connecting rod 83 passes through the other end of the sleeve 81 and is equipped with the roller 84. When the steel barrel 11 enters the test station 3, the V-shaped roller 84 adaptively conforms to the outer wall of the steel barrel under the action of the spring 82, providing flexible limiting to avoid rigid collision damage to the barrel body, while ensuring that the steel barrel is centered.

[0025] One end of the test roller conveyor 4 is connected to the input roller conveyor 1, and the other end of the test roller conveyor 4 is connected to the output roller conveyor 2.

[0026] Working principle:

[0027] 1. The steel drum 11 is conveyed to each test station 3 via the input roller conveyor 1, and the steel drum is pushed onto the side-view roller conveyor 4 above the corresponding test station 3 by the corresponding drum pushing mechanism 5.

[0028] 2. By starting the second cylinder 71, the sealing pressure plate 73 is driven to press down and seal the entire steel drum 11. The vacuum port 731 on the sealing pressure plate 73 is connected to the vacuum device through a pipe. The vacuum device starts to work. When the vacuum degree reaches the set value (the negative pressure value is recommended to be between -30Kpa and -50Kpa depending on the thickness of the steel drum), it stops working and seals and maintains pressure.

[0029] 3. After the pressure holding time is over, the sealing performance of the steel drum is judged based on the change in negative pressure value (a small change in negative pressure value is normal). (The vacuum port 731 of the sealing pressure plate 73 can be integrated with a pressure sensor to monitor the change in negative pressure in real time). Qualified steel drums are conveyed out through the output roller conveyor 2, and unqualified steel drums will sound an alarm and be manually removed. The alarm light is installed on the mounting frame 6 and is electrically connected to the integrated pressure sensor on the vacuum port 731.

[0030] 4. Considering the inconsistent height of the steel drums, the pressing position of the pressure plate is automatically adapted by the cylinder stroke. The second cylinder 71 is a 100mm diameter cylinder with a working pressure of 0.5Mpa and a downward pressure of about 400 kg, to ensure that the steel drum 11 will not be damaged.

[0031] 5. A custom-made, thickened, heavy-duty roller is installed inside the test roller conveyor 4 to ensure sufficient support for the pressure of the second cylinder 71 during operation.

[0032] The embodiments described above are merely preferred embodiments of the present invention, and are described in a relatively specific and detailed manner. However, the present invention is not limited to these embodiments. It should be noted that for those skilled in the art, any improvements made without departing from the spirit of the present invention fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A negative pressure detection device for steel drums, characterized in that, The system includes an input roller conveyor (1), an output roller conveyor (2), a testing station (3), a barrel pushing mechanism (5), a mounting frame (6), a sealing mechanism (7), a barrel blocking mechanism (8), a hinge (9), and a fixing plate (10). The input roller conveyor (1) and the output roller conveyor (2) are arranged parallel to each other. Several testing stations (3) are provided between the input roller conveyor (1) and the output roller conveyor (2). Each testing station (3) is equipped with a corresponding testing roller conveyor (4) above it. Several testing stations are installed on one side of the input roller conveyor (1). The number of the pushing mechanism (5) for pushing the steel drum (11) to the test roller (4) is the same as the number of the test station (3) and they are arranged in a one-to-one correspondence. The mounting frame (6) spans directly above each test roller (4). The sealing mechanism (7) for sealing the steel drum (11) is installed vertically downward on the mounting frame (6). The barrel blocking mechanism (8) for limiting the steel drum (11) is provided on both sides of each mounting frame (6).

2. The negative pressure detection device for steel drums according to claim 1, characterized in that, The pushing mechanism (5) includes a first cylinder (51), a first piston rod (52), a connecting block (53), and a push plate (54). The first cylinder (51) is installed on one side of the input roller conveyor (1). One end of the first piston rod (52) of the first cylinder (51) faces the test station (3) and is connected to one side of the connecting block (53). The push plate (54) is connected to the other side of the connecting block (53).

3. The negative pressure detection device for steel drums according to claim 1, characterized in that, The sealing mechanism (7) includes a second cylinder (71), a second piston rod (72), and a sealing pressure plate (73). The second cylinder (71) is mounted on the top of the mounting frame (6). The second piston rod (72) of the second cylinder (71) is set downward and its lower end passes through the top of the mounting frame (6) and is connected to the top of the sealing pressure plate (73). A vacuum port (731) is provided on the top of the sealing pressure plate (73).

4. The negative pressure detection device for steel drums according to claim 1, characterized in that, The barrel-blocking mechanism (8) includes two barrel-blocking components, which are arranged in a V-shape. One end of each barrel-blocking component is hinged to the fixing plate (10) on the side wall of the mounting frame (6) via a hinge (9).

5. The negative pressure detection device for steel drums according to claim 4, characterized in that, The stop assembly includes a sleeve (81), a spring (82), a connecting rod (83), and a roller (84). One end of the sleeve (81) is connected to the hinge (9). One end of the spring (82) is fixed to the inner wall of one end of the sleeve (81). The other end of the spring (82) is connected to one end of the connecting rod (83). The other end of the connecting rod (83) passes through the other end of the sleeve (81) and is fitted with the roller (84).

6. The negative pressure detection device for steel drums according to claim 1, characterized in that, One end of the test roller (4) is connected to the input roller (1), and the other end of the test roller (4) is connected to the output roller (2).

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