Automatic locking pneumatic sealing cap

Abstract

The utility model relates to the technical field of fluid loading and unloading, in particular to an automatic locking pneumatic sealing cap which comprises a sealing cap body, a plurality of pressing blocks arranged below the sealing cap body and a sealing driving mechanism installed on the sealing cap body and used for driving all the pressing blocks to be turned upwards together. The sealing driving mechanism comprises a supporting frame fixedly arranged above the sealing cap body, the middle of the supporting frame is downwards provided with an installation inserting opening in a penetrating mode, a double-outlet air cylinder is correspondingly arranged in the installation inserting opening, the double-outlet air cylinder comprises a cylinder barrel and a piston rod, and the cylinder barrel is fixedly installed on the upper surface of the supporting frame. By arranging the sealing driving mechanism, the pressing blocks are turned upwards together to abut against the lower edge of the tank opening, so that the sealing cap body is pressed on the tank opening to achieve crane pipe sealing, automatic locking is achieved through pneumatic driving in the whole process, manual screwing is not needed, the labor intensity of workers and the risk that the workers are exposed in harmful or high-temperature media are effectively reduced, and the working efficiency is improved. And the working efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of fluid loading and unloading technology, and in particular to an automatically locking pneumatic sealing cap. Background Technology

[0002] A sealing cap is a sealing component that fits over the loading and unloading ports of chemical storage containers to ensure their internal sealing and safety. Traditional sealing caps often require manual tightening or loosening, which is not only inefficient but also poses a safety hazard to operators when handling hazardous or high-temperature media. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an automatic locking pneumatic sealing cap that is efficient in loading and unloading and has good safety performance, overcoming the shortcomings of the existing technology.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An automatically locking pneumatic sealing cap is characterized by comprising a sealing cap body, a plurality of pressure blocks disposed below the sealing cap body, and a sealing drive mechanism mounted on the sealing cap body for driving the pressure blocks to flip upward together.

[0006] The sealing drive mechanism includes a support frame fixedly mounted above the sealing cap body. The support frame has a downward through-hole in the middle, and a double-outlet cylinder is correspondingly provided in the mounting hole. The double-outlet cylinder includes a cylinder barrel and a piston rod. The cylinder barrel is fixedly mounted on the upper surface of the support frame, and the piston rod is slidably mounted coaxially inside the cylinder barrel. The two end faces of the piston rod are connected to form a conveying channel.

[0007] A mounting plate is fixedly installed at the bottom of the piston rod. The middle of the mounting plate has a discharge port that communicates with the conveying channel. The edge of the mounting plate has several mounting grooves that match the number of pressure blocks. A mounting shaft is fixedly installed in each mounting groove. A swing arm is rotatably sleeved on each mounting shaft. The other end of each swing arm is connected to a pressure block. A connecting arm is provided between each swing arm and the cylinder. The two ends of each connecting arm are rotatably connected to the swing arm and the cylinder, respectively.

[0008] The technical problem to be solved by this utility model can be further achieved through the following steps: a first hinge seat is fixedly provided on the side of the swing arm close to the corresponding connecting arm, and a second hinge seat matching the first hinge seat is fixedly provided on the outer circumferential surface of the cylinder, and the two ends of each connecting arm are rotatably connected to the first hinge seat and the second hinge seat respectively.

[0009] The technical problem to be solved by this utility model can be further achieved through the following steps: the sealing cap body, the support frame and the mounting plate are all coaxially arranged; the mounting groove is evenly arranged on the mounting plate along the circumference; and a number of fastening bolts connected to the bottom of the piston rod are provided on the mounting plate between the mounting groove and the discharge port.

[0010] The technical problem to be solved by this utility model can be further achieved through the following steps: a connecting flange is fixedly provided on the top of the piston rod, and the inner diameter of the connecting flange is set to correspond to the diameter of the conveying channel.

[0011] The technical problem to be solved by this utility model can be further achieved through the following steps: the other end of the swing arm is fixedly or rotatably connected to the pressure block, and a buffer pad is fixedly installed on the pressure block.

[0012] The technical problem to be solved by this utility model can be further achieved through the following steps: a sealing gasket is provided between the cylinder and the support frame.

[0013] The technical problem to be solved by this utility model can be further achieved through the following steps, including an air supply device and an air delivery pipe. One end of the air delivery pipe is connected to the air supply device, and the other end is connected to the two air ports of the double-outlet cylinder through an air supply switching valve.

[0014] Compared with the prior art, the beneficial effects of this utility model are: by setting a sealing drive mechanism, the pressure blocks are flipped up together and pressed against the lower edge of the tank opening, thereby pressing the sealing cap body onto the tank opening to achieve loading arm sealing. The entire process is automatically locked by pneumatic drive, without the need for manual tightening, which effectively reduces the labor intensity of workers and the risk of exposure to harmful or high-temperature media, and greatly improves work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the use of this utility model;

[0017] Figure 3 This is a schematic diagram (b) illustrating the use of this utility model;

[0018] Figure 4 This is a top view of the mounting plate of this utility model;

[0019] In the diagram: 1-Sealing cap body; 2-Pressure block; 3-Support frame; 4-Double outlet cylinder; 5-Cylinder barrel; 6-Piston rod; 7-Mounting plate; 8-Mounting groove; 9-Mounting shaft; 10-Swing arm; 11-Connecting arm; 12-First hinge seat; 13-Second hinge seat; 14-Fastening bolt; 15-Connecting flange; 16-Buffer pad; 17-Sealing gasket; 18-Can opening; 19-Discharge port. Detailed Implementation

[0020] The specific technical solutions of this utility model are further described below to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0022] Please refer to Figure 1-4 An automatic locking pneumatic sealing cap includes a sealing cap body 1, a plurality of pressure blocks 2 disposed below the sealing cap body 1, and a sealing drive mechanism installed on the sealing cap body 1 for driving each pressure block 2 to flip upward together; wherein the pressure block 2 is used to flip upward to abut against the lower edge of the can opening 18, so that the sealing cap body 1 is pressed onto the can opening to achieve loading arm sealing.

[0023] The sealing drive mechanism includes a support frame 3 fixedly mounted above the sealing cap body 1. The support frame 3 has a downward through-hole in the middle, and a double-outlet cylinder 4 is correspondingly provided in the installation hole. The double-outlet cylinder 4 includes a cylinder barrel 5 and a piston rod 6. The cylinder barrel 5 is fixedly mounted on the upper surface of the support frame 3, and the piston rod 6 is coaxially slidably disposed inside the cylinder barrel 5. The two end faces of the piston rod 6 are connected to form a conveying channel.

[0024] A mounting plate 7 is fixedly provided at the bottom of the piston rod 6. The middle part of the mounting plate 7 is provided with a discharge port 19 that communicates with the conveying channel. The edge of the mounting plate 7 is provided with a number of mounting grooves 8 that match the number of pressure blocks 2. A mounting shaft 9 is fixedly provided in each mounting groove 8. A swing arm 10 is rotatably sleeved on each mounting shaft 9. The other end of each swing arm 10 is connected to a pressure block 2. A connecting arm 11 is provided between each swing arm 10 and the cylinder 5. The two ends of each connecting arm 11 are rotatably connected to the swing arm 10 and the cylinder 5, respectively.

[0025] A first hinge seat 12 is fixedly provided on the side of the swing arm 10 near the corresponding connecting arm 11, and a second hinge seat 13 matching the first hinge seat 12 is fixedly provided on the outer circumferential surface of the cylinder 5. Both ends of each connecting arm 11 are rotatably connected to the first hinge seat 12 and the second hinge seat 13, respectively. The rotatable connection is achieved by additionally installing hinge seats, eliminating the need for slotting or drilling into the swing arm 10 and connecting arm 11 themselves, thus ensuring the overall strength of the swing arm 10 and connecting arm 11 and improving the clamping effect of the pressure block 2. In this embodiment, the connecting arm is L-shaped to prevent interference with the bottom of the cylinder.

[0026] The sealing cap body 1, support frame 3 and mounting plate 7 are all coaxially arranged. The mounting groove 8 is evenly arranged on the mounting plate 7 along the circumference. Several fastening bolts 14 that connect to the bottom of the piston rod 6 are provided on the mounting plate 7 between the mounting groove 8 and the discharge port.

[0027] A connecting flange 15 is fixedly provided on the top of the piston rod 6. The inner diameter of the connecting flange 15 corresponds to the diameter of the conveying channel. The connecting flange 15 is used to connect with the loading arm to ensure that a seal is formed between the loading arm and the conveying channel.

[0028] The other end of the swing arm 10 is fixedly or rotatably connected to the pressure block 2, and a buffer pad 16 is fixedly installed on the pressure block 2; a sealing gasket 17 is provided between the cylinder 5 and the support frame 3 to ensure the sealing effect of the can opening.

[0029] This utility model also includes an air supply device and an air delivery pipe, wherein one end of the air delivery pipe is connected to the air supply port of the air supply device, and the other end of the air delivery pipe is connected to the two air ports of the dual-outlet cylinder 4 through an air supply switching valve. The air supply switching valve is specifically a three-position four-way reversing valve, the structure, connection relationship and working principle of which are existing technologies and will not be described in detail here.

[0030] Working principle: This utility model is an automatic locking pneumatic sealing cap. During loading, the operator places the lower edge of the sealing cap body 1 onto the tank opening, so that the lower part of the sealing cap body 1 extends into the tank opening. Figure 2 The loading arm vertical pipe is connected to the sealing cap via the connecting flange 15, and then the air supply device is turned on to introduce air into the air port of the double-outlet cylinder 4, thereby driving the piston rod 6 and its mounting plate 7 to move downward. The mounting plate 7 drives one end of the swing arm 10 to move downward. Since the connecting arm 11 and the swing arm 10 are rotatably connected and have a fixed length, the swing arm 10 is pulled by the connecting arm 11 during the downward movement, and the other end of the swing arm 10 gradually flips upward and outward until the pressure block 2 abuts against and presses against the lower edge of the tank opening. Figure 3 At this point, the sealing cap body 1 is pressed against the tank opening to achieve a sealing of the loading arm.

[0031] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A pneumatic sealing cap that automatically locks, characterized in that: It includes a sealing cap body, several pressure blocks located below the sealing cap body, and a sealing drive mechanism installed on the sealing cap body for driving the pressure blocks to flip upward together. The sealing drive mechanism includes a support frame fixedly mounted above the sealing cap body. The support frame has a downward through-hole in the middle, and a double-outlet cylinder is correspondingly provided in the mounting hole. The double-outlet cylinder includes a cylinder barrel and a piston rod. The cylinder barrel is fixedly mounted on the upper surface of the support frame, and the piston rod is slidably mounted coaxially inside the cylinder barrel. The two end faces of the piston rod are connected to form a conveying channel. A mounting plate is fixedly installed at the bottom of the piston rod. The middle of the mounting plate has a discharge port that communicates with the conveying channel. The edge of the mounting plate has several mounting grooves that match the number of pressure blocks. A mounting shaft is fixedly installed in each mounting groove. A swing arm is rotatably sleeved on each mounting shaft. The other end of each swing arm is connected to a pressure block. A connecting arm is provided between each swing arm and the cylinder. The two ends of each connecting arm are rotatably connected to the swing arm and the cylinder, respectively.

2. The automatically locking pneumatic sealing cap according to claim 1, characterized in that: The swing arm is fixedly provided with a first hinge seat on the side near the corresponding connecting arm, and a second hinge seat matching the first hinge seat is fixedly provided on the outer circumferential surface of the cylinder. The two ends of each connecting arm are respectively rotatably connected to the first hinge seat and the second hinge seat.

3. The automatically locking pneumatic sealing cap according to claim 1, characterized in that: The sealing cap body, support frame and mounting plate are all coaxially arranged. The mounting groove is evenly arranged on the mounting plate along the circumference. Several fastening bolts that connect to the bottom of the piston rod are provided on the mounting plate between the mounting groove and the discharge port.

4. The automatically locking pneumatic sealing cap according to claim 1, characterized in that: A connecting flange is fixedly provided at the top of the piston rod, and the inner diameter of the connecting flange is set to correspond to the diameter of the conveying channel.

5. The automatically locking pneumatic sealing cap according to claim 1, characterized in that: The other end of the swing arm is fixedly or rotatably connected to the pressure block, and a buffer pad is fixedly installed on the pressure block.

6. The automatically locking pneumatic sealing cap according to claim 1, characterized in that: A sealing gasket is provided between the cylinder and the support frame.

7. The automatically locking pneumatic sealing cap according to claim 1, characterized in that: It also includes an air supply device and an air delivery pipe. One end of the air delivery pipe is connected to the air supply device, and the other end is connected to the two air ports of the dual-outlet cylinder through an air supply switching valve.

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