Leak-proof sealing connection device for tank car liquid level gauge

Abstract

This utility model relates to the field of fluid sealing technology and discloses a leak-proof sealing connection device for a tank truck level gauge. It includes a tank truck body, a flange fixedly connected to the top of the tank truck body, a fixing mechanism installed on the inner wall of the flange, a clamping mechanism installed on the top of the flange, and multiple bolts threaded onto the inner wall of the flange. A level gauge body is detachably connected to the top of the flange, a second sealing ring is detachably connected to the inner wall of the level gauge body, and a vent valve is detachably connected to the inner wall of the flange. The fixing mechanism includes a fixing column, the outer wall of which is slidably connected to the inner wall of the flange. This utility model uses easily replaceable components, avoiding the need for specialized tools and numerous disassembled parts that would lead to long maintenance times, prolonged tank truck downtime, reduced transportation efficiency, and increased secondary damage and maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of fluid sealing technology, and in particular to a leak-proof sealing connection device for tank truck level gauges. Background Technology

[0002] The leak-proof sealing connection device of the tank truck level gauge blocks the leakage channel of the medium inside the tank through the sealing structure, ensuring that there is no leakage at the connection between the level gauge and the tank body, preventing the leakage of flammable, explosive and toxic media, avoiding safety accidents and environmental pollution, ensuring accurate level measurement, avoiding economic disputes caused by measurement errors, maintaining the pressure balance of the tank truck, extending the service life of the equipment, meeting regulatory requirements, and providing core protection for the safe transportation of dangerous goods. It is a key link in the safe operation of tank trucks.

[0003] The anti-leakage sealing connection device of the tank truck level gauge uses sealing elements to fit tightly with the connection surface under mechanical force, forming a sealing interface to block the medium channel. At the same time, some structures use medium pressure to enhance the seal, and use elastic elements to compensate for gaps caused by vibration and temperature difference. Combined with multi-stage sealing design, it ensures that the level gauge and tank body can communicate and measure while preventing medium leakage, taking into account both pressure balance and leak prevention functions.

[0004] In existing technologies, some leak-proof sealing connection devices require the use of special tools for disassembly when replacing the sealing ring, and there are many parts to be disassembled, resulting in long maintenance time, prolonged tanker downtime, reduced transportation efficiency, and increased secondary damage and maintenance costs. Therefore, a leak-proof sealing connection device for tanker level gauges is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a leak-proof sealing connection device for tank truck level gauges. It aims to improve the existing technology, which requires the use of special tools to disassemble the tank truck when replacing the sealing ring, and involves a large number of disassembled parts, resulting in long maintenance time, prolonged tank truck downtime, reduced transportation efficiency, and increased secondary damage and maintenance costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A leak-proof sealing connection device for a tank truck level gauge includes a tank truck body, a flange fixedly connected to the top of the tank truck body, a fixing mechanism installed on the inner wall of the flange, a clamping mechanism installed on the top of the flange, multiple bolts threadedly connected to the inner wall of the flange, a level gauge body detachably connected to the top of the flange, a sealing ring II detachably connected to the inner wall of the level gauge body, and a vent valve detachably connected to the inner wall of the flange.

[0008] The fixing mechanism includes a fixing column, the outer wall of which is slidably connected to the inner wall of the flange, a connecting column slidably connected to the inner wall of the fixing column, and a fixing component fixedly connected to one end of the connecting column.

[0009] As a further description of the above technical solution:

[0010] The fixing assembly includes a connecting rod and a limiting rod. The outer wall of the connecting rod is fixedly connected to the inner wall of the fixing column, and the outer wall of the limiting rod is slidably connected to the inner wall of the fixing column. Two rotating plates are rotatably connected to the outer wall of the connecting rod.

[0011] As a further description of the above technical solution:

[0012] The inner walls of the two rotating plates are rotatably connected to round rods, and the inner wall of the limiting rod is slidably connected to the inner wall of the connecting column;

[0013] As a further description of the above technical solution:

[0014] A limiting block is fixedly connected to the outer wall of the round rod, and the outer wall of the limiting block is in contact with the inner wall of the flange.

[0015] As a further description of the above technical solution:

[0016] The clamping mechanism includes a connecting ring, the inner wall of which is fixedly connected to the outer wall of the vent valve, and multiple fixing blocks are fixedly connected to the outer wall of the connecting ring. A positioning rod is fixedly connected to the inner wall of each of the multiple fixing blocks, and a pressure plate is rotatably connected to the outer wall of the positioning rod.

[0017] As a further description of the above technical solution:

[0018] A clamping column is slidably connected to the inner wall of the connecting ring, and a rotating block is fixedly connected to the top of the clamping column;

[0019] As a further description of the above technical solution:

[0020] The outer wall of the rotating block is in contact with the outer wall of the pressure plate, and the inner wall of the connecting ring is detachably connected with a sealing ring. The bottom of the pressing column is in contact with the top of the sealing ring.

[0021] As a further description of the above technical solution:

[0022] The bottom of the level gauge body is fixedly connected to the top of the bolt, and the outer wall of the vent valve is installed on the inner wall of the tanker body.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, by pulling up the connecting column, the connecting rod is moved upward, causing the rotating plate to move the round rod backward, the limiting block is disengaged from the flange, and then the fixing column is removed. The above operation is repeated to remove the remaining three fixing columns, the liquid level gauge body is lifted up, and the sealing ring 2 that needs to be replaced is removed and replaced to prevent the tanker truck from having to stop for a long time due to the long replacement time, which would affect the transportation efficiency.

[0025] 2. In this utility model, the connecting ring is installed on the vent valve, then the pressure plate is lifted, the rotating block is rotated parallel to the pressure plate to limit the clamping column, and the pressure plate is pressed down to make it contact the clamping column, so that the clamping column presses against the sealing ring one, to prevent the wear of other sealing parts from being aggravated due to the internal pressure balance of the liquid level gauge, thereby reducing the service life of the overall device and increasing maintenance costs. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the anti-leakage sealing connection device for the tank truck level gauge proposed in this utility model.

[0027] Figure 2 This is a schematic diagram of the flange of the anti-leakage sealing connection device for the tank truck level gauge proposed in this utility model.

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Tank truck body; 2. Flange; 3. Fixing mechanism; 31. Fixing column; 32. Connecting column; 33. Fixing assembly; 331. Connecting rod; 332. Rotating plate; 333. Round rod; 334. Limiting block; 335. Limiting rod; 4. Clamping mechanism; 41. Connecting ring; 42. Fixing block; 43. Positioning rod; 44. Pressure plate; 45. Rotating block; 46. Clamping column; 47. Sealing ring one; 5. Bolt; 6. Level gauge body; 7. Sealing ring two; 8. Vent valve. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 , Figure 2and Figure 3 This utility model provides an embodiment of a leak-proof sealing connection device for a tank truck level gauge, including a tank truck body 1. The tank truck body 1 is the basic load-bearing component of the entire leak-proof sealing connection device for the tank truck level gauge, and is a large container used to store various liquid or gas media. A flange 2 is fixedly connected to the top of the tank truck body 1. The flange 2 is a key connecting component for connecting other components. A fixing mechanism 3 is installed on the inner wall of the flange 2. The fixing mechanism 3 is used to enhance the stability of the connection between the flange 2 and other components, which can facilitate the disassembly of the sealing ring 7 and strengthen the sealing of the level gauge body 6. A clamping mechanism 4 is installed on the top of the flange 2. The clamping mechanism 4 is a key structure used to ensure the sealing performance of the vent valve 8.

[0034] The inner wall of flange 2 is threaded with multiple bolts 5, which are used to fix flange 2 to tank truck body 1. The top of flange 2 is detachably connected to level gauge body 6, which is the core component for measuring the liquid level of the medium inside the tank truck. The inner wall of level gauge body 6 is detachably connected to sealing ring 2 7, which enhances the sealing performance between level gauge body 6 and flange 2 and other components, preventing the medium inside the tank truck from leaking from the connection gap between level gauge body 6 and other components. The inner wall of flange 2 is detachably connected to vent valve 8, which is used to regulate the air pressure inside the tank truck.

[0035] The fixing mechanism 3 includes a fixing column 31, which is used to connect the level gauge body 6 and the flange 2 to improve the sealing effect of the sealing ring 7. At the same time, the connecting column 32 slides up and down on the inner wall, driving the fixing component 33 to perform corresponding actions. The outer wall of the fixing column 31 is slidably connected to the inner wall of the flange 2, and the inner wall of the fixing column 31 is slidably connected to the connecting column 32. The connecting column 32 drives the fixing component 33 to move together, thereby realizing the control of the connection state between the fixing column 31 and the flange 2. One end of the connecting column 32 is fixedly connected to the fixing component 33, which firmly fixes the fixing column 31 to the flange 2, enhancing the stability of the overall structure.

[0036] The fixing component 33 includes a connecting rod 331 and a limiting rod 335. The connecting rod 331 is used to drive the subsequent components to move when the connecting column 32 moves. The limiting rod 335 is used to prevent the connecting column 32 from shifting when the fixing component 33 is fixed. The outer wall of the connecting rod 331 is fixedly connected to the inner wall of the fixing column 31. The outer wall of the limiting rod 335 is slidably connected to the inner wall of the fixing column 31. Two rotating plates 332 are rotatably connected to the outer wall of the connecting rod 331. The rotating plates 332 are used to connect the round rod 333 and the connecting rod 331.

[0037] Two rotating plates 332 are rotatably connected to the inner walls of the rotating plates 332. The rotating plates 332 are used to rotate the limiting block 334 outward. The inner wall of the limiting rod 335 is slidably connected to the inner wall of the connecting column 32. The outer wall of the rotating plate 333 is fixedly connected to the limiting block 334. The limiting block 334 is used to fix the connection between the liquid level gauge body 6 and the flange 2, and at the same time facilitates the replacement of the sealing ring 7 between them. The outer wall of the limiting block 334 is in contact with the inner wall of the flange 2.

[0038] Reference Figure 2 and Figure 4 The clamping mechanism 4 includes a connecting ring 41. The fixed connection between the connecting ring 41 and the vent valve 8 ensures the synchronous action of the two in subsequent operations, providing a basis for the sealing operation. The inner wall of the connecting ring 41 is fixedly connected to the outer wall of the vent valve 8. Multiple fixing blocks 42 are fixedly connected to the outer wall of the connecting ring 41. The fixing blocks 42 provide an installation position for the positioning rod 43. The inner wall of the multiple fixing blocks 42 is fixedly connected to the positioning rod 43. The positioning rod 43 is the axis of rotation of the pressure plate 44, ensuring that the pressure plate 44 can rotate stably around the positioning rod 43. The outer wall of the positioning rod 43 is rotatably connected to the pressure plate 44. The pressure plate 44 rotates on the positioning rod 43 to apply pressure or release pressure, thereby fixing and releasing the clamping column 46.

[0039] A clamping column 46 is slidably connected to the inner wall of the connecting ring 41. The clamping column 46 is used to enhance the sealing effect of the sealing ring 47. A rotating block 45 is fixedly connected to the top of the clamping column 46. The rotating block 45 is used to connect the rotating block 45 and limit the clamping column 46 to prevent it from moving when no force is applied. The outer wall of the rotating block 45 is in contact with the outer wall of the pressure plate 44. A sealing ring 47 is detachably connected to the inner wall of the connecting ring 41. When the clamping column 46 moves downward, it applies pressure to the sealing ring 47, causing it to deform and fill the gap in the connection, thus achieving a good sealing effect. The bottom of the clamping column 46 is in contact with the top of the sealing ring 47. The bottom of the level gauge body 6 is fixedly connected to the top of the bolt 5. The outer wall of the vent valve 8 is installed on the inner wall of the tanker body 1.

[0040] Working principle: When it is necessary to replace the second sealing ring 7, remove the limiting rod 335, then pull up the connecting column 32, causing the connecting rod 331 to move upward. At this time, the rotating plate 332 rotates, and then the rotating plate 332 drives the round rod 333 to move backward, causing the limiting block 334 to leave the flange 2. At this time, the fixing column 31 can be removed. Then repeat the above operation to remove the remaining three fixing columns 31. Then lift the level gauge body 6 upward, and then remove the second sealing ring 7 to be replaced. After the replacement is completed, reverse the above steps to fix the level gauge body 6 back to the flange 2, thereby completing the replacement of the second sealing ring 7. This prevents secondary damage and increased maintenance costs caused by disassembling more parts during replacement.

[0041] When a good seal is required for the vent valve 8, the connecting ring 41 is installed on the vent valve 8. At this time, the operator lifts the pressure plate 44 and slides the clamping column 46 into the connecting ring 41. The rotating block 45 is rotated parallel to the pressure plate 44, so that the clamping column 46 is limited. Then the pressure plate 44 is pressed down, and the pressure plate 44 contacts the clamping column 46, so that the clamping column 46 presses down on the sealing ring 47, thereby improving the sealing performance of the vent valve 8 and preventing the intrusion of external water vapor and dust, which may interfere with the accuracy of liquid level measurement, cause display distortion, and affect the judgment of loading and unloading volume.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A leak-proof sealing connection device for a tank truck liquid level gauge, comprising a tank truck body (1), characterized in that: A flange (2) is fixedly connected to the top of the tanker body (1). A fixing mechanism (3) is installed on the inner wall of the flange (2). A pressing mechanism (4) is installed on the top of the flange (2). Multiple bolts (5) are threadedly connected to the inner wall of the flange (2). A liquid level gauge body (6) is detachably connected to the top of the flange (2). A sealing ring II (7) is detachably connected to the inner wall of the liquid level gauge body (6). A vent valve (8) is detachably connected to the inner wall of the flange (2). The fixing mechanism (3) includes a fixing column (31), the outer wall of the fixing column (31) is slidably connected to the inner wall of the flange (2), the inner wall of the fixing column (31) is slidably connected to a connecting column (32), and one end of the connecting column (32) is fixedly connected to a fixing component (33).

2. A leak-proof sealed connection device for tank truck gauges according to claim 1, characterized in that: The fixing component (33) includes a connecting rod (331) and a limiting rod (335). The outer wall of the connecting rod (331) is fixedly connected to the inner wall of the fixing column (31). The outer wall of the limiting rod (335) is slidably connected to the inner wall of the fixing column (31). The outer wall of the connecting rod (331) is rotatably connected to two rotating plates (332).

3. A leak-proof sealed connection device for tank truck gauges according to claim 2, characterized in that: The inner walls of the two rotating plates (332) are rotatably connected to a round rod (333), and the inner wall of the limiting rod (335) is slidably connected to the inner wall of the connecting column (32).

4. The leak-proof sealed connection of a tank truck gauge according to claim 3, characterized in that: A limiting block (334) is fixedly connected to the outer wall of the round rod (333), and the outer wall of the limiting block (334) is in contact with the inner wall of the flange (2).

5. The leak-proof sealed connection device for tank truck gauges of claim 1, wherein: The clamping mechanism (4) includes a connecting ring (41), the inner wall of which is fixedly connected to the outer wall of the vent valve (8), and a plurality of fixing blocks (42) are fixedly connected to the outer wall of the connecting ring (41). A positioning rod (43) is fixedly connected to the inner wall of the plurality of fixing blocks (42), and a pressure plate (44) is rotatably connected to the outer wall of the positioning rod (43).

6. A leak-proof sealed connection device for tank truck gauges according to claim 5, characterized in that: The inner wall of the connecting ring (41) is slidably connected to a clamping column (46), and the top of the clamping column (46) is fixedly connected to a rotating block (45).

7. A leak-proof sealed connection device for tank truck gauges according to claim 6, characterized in that: The outer wall of the rotating block (45) is in contact with the outer wall of the pressure plate (44), the inner wall of the connecting ring (41) is detachably connected with a sealing ring (47), and the bottom of the pressing column (46) is in contact with the top of the sealing ring (47).

8. The leak-proof sealed connection device for tank truck gauges of claim 1, wherein: The bottom of the level gauge body (6) is fixedly connected to the top of the bolt (5), and the outer wall of the vent valve (8) is installed on the inner wall of the tanker body (1).

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