Packaging storage device for modified isocyanates

Abstract

The utility model discloses a kind of modified isocyanate packing storage devices, including storage bucket and the bucket cover of lid installation in the top of storage bucket, the cut-off valve is equipped on the top of storage bucket, multiple valve ports are equipped on cut-off valve, valve port at least includes the discharge valve port for output material, the nitrogen inlet valve port for input protection nitrogen and the connecting valve port for being communicated with the inside of storage bucket, main pipe is equipped in storage bucket, penetrates bucket cover and is sealedly connected with the connecting valve port of cut-off valve.The modified isocyanate packing storage device of the utility model cooperates through cut-off valve, balance valve, drying box, drying pipe and so on structure, realizes nitrogen protection agent airtight discharge, whole process does not need to open bucket cover, prevents moisture invasion in material taking link.

Description

Technical Field

[0001] This utility model belongs to the technical field of chemical product storage devices, specifically relating to a packaging and storage device for modified isocyanates. Background Technology

[0002] Modified isocyanates are extremely sensitive to moisture, and their packaging must have excellent moisture-proof and airtight properties. Currently, commonly used metal or plastic drums present significant problems during retrieval: First, when the liquid level is low, it is difficult to completely remove the remaining material, resulting in waste; second, each opening introduces humid air, contaminating the remaining product and posing safety hazards; finally, traditional packaging requires additional extraction tools, which is inconvenient and increases the risk of contamination.

[0003] A Chinese utility model patent discloses a "dedicated storage tank for isocyanates," which improves moisture prevention during storage by absorbing moisture from the tank through a drying chamber located under the lid. However, this device still requires opening the main tank lid when discharging material, failing to address the issues of air intrusion and incomplete material removal during the discharging process.

[0004] Therefore, there is an urgent need for a packaging device that can achieve full-sealed moisture protection while allowing for easy and thorough access to materials. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a modified isocyanate packaging and storage device with a reasonable structure, good sealing performance, and the ability to easily and completely retrieve all liquid materials from the container.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] This utility model provides a packaging and storage device for modified isocyanates, including a storage tank and a lid installed on the top of the storage tank. A shut-off valve is provided above the storage tank, and the shut-off valve has multiple valve ports, including at least a discharge valve for discharging materials, a nitrogen inlet valve for inputting protective nitrogen, and a connection valve for communicating with the inside of the storage tank. The storage tank has a main pipe that penetrates the lid and is sealed to the connection valve of the shut-off valve. One end of the main pipe that extends into the storage tank is sealed to a flexible hose that extends into the liquid material inside the tank. The end of the flexible hose away from the main pipe is equipped with a universal gravity suction head that always points to the lowest point inside the tank.

[0008] Preferably, a drying box is fixedly installed on the side of the barrel lid near the storage barrel, the drying box is filled with solid desiccant, the bottom of the drying box is open, and an air-permeable liquid-resistant membrane is fixedly installed at the bottom opening of the drying box to seal the opening.

[0009] Preferably, the lid is also equipped with a balance valve for adjusting the air pressure inside the storage tank. One end of the balance valve extends into the storage tank, and the end of the balance valve extending into the storage tank is connected to a drying tube. The drying tube contains a solid desiccant, and several air vents are evenly opened on the side wall of the drying tube.

[0010] Preferably, the universal gravity suction head includes a suction head fixed to the end of a flexible hose and a gravity ball fixed to the end of the suction head, and the gravity ball has a plurality of liquid passage holes that allow the suction head to communicate with the outside.

[0011] Preferably, the storage tank has a confluence bottom plate at the bottom of its inner side, which surrounds the bottom of the storage tank and forms a concave cone or inclined surface around the bottom of the storage tank.

[0012] Preferably, the shut-off valve also includes a feed valve port for injecting materials, and the discharge valve port, nitrogen inlet valve port, feed valve port and connecting valve port are all provided with quick-connect adapters at their outer ends.

[0013] Preferably, the gas-permeable and liquid-resistant membrane is a polytetrafluoroethylene microporous membrane.

[0014] Preferably, the storage tank is provided with a locking mechanism on the top of its outer side, and the tank lid is detachably fixed to the storage tank through the locking mechanism. The locking mechanism is specifically a lever-type quick-lock clamp.

[0015] Preferably, the top of the storage tank is also provided with a sealing ring, which is used to seal the tank lid when it is closed with the storage tank lid.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] This utility model discloses a packaging and storage device for modified isocyanates. Through the cooperation of structures such as a shut-off valve, a balance valve, a drying chamber, and a drying pipe, it achieves sealed discharge of nitrogen-filled protective agent without opening the barrel lid throughout the process, thus preventing moisture intrusion during material handling. The shut-off valve can also be directly connected to a pipeline for conveying, eliminating the need for additional material extraction and improving work efficiency. Inside the barrel, a universal gravity suction head ensures that the suction port always faces the lowest point, allowing for complete material extraction regardless of barrel conditions, reducing waste. At the same time, the internal pressure changes are minimized while maintaining dryness during operation, ensuring structural safety and preventing high pressure or negative pressure from affecting the barrel's safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a packaging and storage device for modified isocyanates.

[0019] 1-Storage tank; 11-Locking mechanism; 12-Manifold base plate; 2-Tank lid; 21-Drying chamber; 211-Air-permeable liquid-blocking membrane; 3-Stop valve; 31-Discharge valve port; 32-Nitrogen inlet valve port; 33-Feed inlet valve port; 34-Connecting valve port; 4-Main pipe; 41-Flexible connecting pipe; 42-Universal gravity suction head; 43-Gravity ball; 5-Balance valve; 51-Drying tube. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] Example

[0022] Please see Figure 1 A packaging and storage device for modified isocyanates includes a storage tank 1 and a lid 2 that is installed on the top of the storage tank. A shut-off valve 3 is provided above the storage tank. The shut-off valve has multiple valve ports, including at least a discharge valve port 31 for discharging materials, a nitrogen inlet valve port 32 for inputting protective nitrogen, and a connection valve port 34 for communicating with the inside of the storage tank. The storage tank has a main pipe 4 that penetrates the lid and is sealed to the connection valve port of the shut-off valve. One end of the main pipe 4 that extends into the storage tank is sealed to a flexible hose 41 that extends into the liquid material inside the tank. The end of the flexible hose away from the main pipe is equipped with a universal gravity suction head 42 that always points to the lowest point inside the tank.

[0023] A drying chamber 21 is fixedly installed on the side of the barrel lid 2 near the storage barrel. The drying chamber is filled with solid desiccant. The bottom of the drying chamber has an opening, and a breathable liquid-resistant membrane 211 is fixedly installed at the bottom opening of the drying chamber to seal the opening.

[0024] The lid 2 is also equipped with a balance valve 5 for adjusting the air pressure inside the storage tank. One end of the balance valve extends into the storage tank, and the end of the balance valve extending into the storage tank is connected to a drying tube 51. The drying tube contains a solid desiccant, and several air vents are evenly opened on the side wall of the drying tube.

[0025] The universal gravity suction head 42 includes a suction head fixed to the end of a flexible hose and a gravity ball 43 fixed to the end of the suction head. The gravity ball has several liquid passage holes that allow the suction head to communicate with the outside.

[0026] The storage tank 1 has a confluence bottom plate 12 at the bottom of its inner side. The confluence bottom plate is arranged around the bottom of the storage tank and surrounds the bottom of the inner side of the storage tank into a concave cone or inclined plane.

[0027] The shut-off valve 3 also includes a feed valve port 33 for injecting materials, and quick-connect couplings are provided at the outer ends of the discharge valve port, nitrogen inlet valve port, feed valve port and connecting valve port.

[0028] The gas-permeable and liquid-resistant membrane 211 is specifically a polytetrafluoroethylene microporous membrane.

[0029] The storage tank 1 is provided with a locking mechanism 11 on the top of its outer side. The tank lid is detachably fixed to the storage tank through the locking mechanism. The locking mechanism is specifically a lever-type quick-lock clamp.

[0030] The top of the storage tank 1 is also provided with a sealing ring, which is used to seal the tank lid when it is connected to the storage tank lid.

[0031] The modified isocyanate packaging and storage device of this embodiment works on the following principle: when liquid modified isocyanate is filled into the storage tank and placed for storage, the discharge valve 31 and the inlet valve 33 are closed, the nitrogen inlet valve 32 is opened, and dry nitrogen is introduced into the tank through the connecting valve 34. At this time, the pressure inside the tank rises, the balance valve opens, and excess air is discharged from the storage tank through the balance valve until the nitrogen fills the liquid surface inside the tank. In conjunction with the drying box 21, the moisture inside the tank is continuously absorbed to ensure that the gas inside the tank is dry. During material collection, the conveying pipe is connected to the discharge valve 31. When the discharge valve is opened, the material is sucked out through the universal gravity suction head 42 via the flexible connecting pipe and the main pipe. During this process, as the liquid level drops, the universal gravity suction head, under the action of the gravity ball 43, can automatically turn and point to the lowest point of the liquid material regardless of whether the tank is tilted, ensuring that the material can be completely sucked out. As the liquid level drops, the pressure inside the tank decreases, the balance valve opens, and air or nitrogen is drawn into the tank from the outside. The air drawn in is dried through the drying pipe, which can effectively ensure its dryness.

[0032] The beneficial effects of this utility model are as follows: Through the cooperation of structures such as the shut-off valve, balance valve, drying chamber, and drying pipe, the nitrogen-filled protective agent can be discharged in a sealed manner without opening the barrel lid throughout the process, thus preventing moisture intrusion during the material handling process. The shut-off valve can also be directly connected to the pipeline for transportation, eliminating the need for additional material extraction and improving work efficiency. The universal gravity suction head inside the barrel ensures that the suction port is always facing the lowest point, so that the material can be completely extracted no matter how the barrel is protected, reducing waste. At the same time, the pressure change inside the barrel is reduced while ensuring dryness during operation, ensuring structural safety and preventing high pressure and negative pressure from having a safety impact on the barrel.

[0033] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. A packaging and storage device for modified isocyanates, characterized in that, The system includes a storage tank (1) and a lid (2) installed on the top of the storage tank. A shut-off valve (3) is provided above the storage tank. The shut-off valve has multiple valve ports, including at least a discharge valve (31) for discharging materials, a nitrogen inlet valve (32) for inputting protective nitrogen, and a connection valve (34) for communicating with the inside of the storage tank. The storage tank has a main pipe (4) that penetrates the lid and is sealed to the connection valve of the shut-off valve. One end of the main pipe (4) that extends into the storage tank is sealed to a flexible hose (41) that extends into the liquid material inside the tank. The end of the flexible hose away from the main pipe is equipped with a universal gravity suction head (42) that always points to the lowest point inside the tank.

2. The packaging and storage device for modified isocyanates according to claim 1, characterized in that, A drying box (21) is fixedly installed on the side of the barrel lid (2) near the storage barrel. The drying box is filled with solid desiccant. The bottom of the drying box is open, and a breathable liquid-resistant membrane (211) is fixedly installed at the bottom opening of the drying box to seal the opening.

3. The packaging and storage device for modified isocyanates according to claim 1, characterized in that, The lid (2) is also equipped with a balance valve (5) for adjusting the air pressure inside the storage tank. One end of the balance valve extends into the storage tank, and the end of the balance valve extending into the storage tank is connected to a drying tube (51). The drying tube contains a solid desiccant, and several air vents are evenly opened on the side wall of the drying tube.

4. The packaging and storage device for modified isocyanates according to claim 1, characterized in that, The universal gravity suction head (42) includes a suction head fixed to the end of a flexible hose and a gravity ball (43) fixed to the end of the suction head. The gravity ball has several liquid passage holes that allow the suction head to communicate with the outside.

5. The packaging and storage device for modified isocyanates according to claim 1, characterized in that, The storage tank (1) has a confluence bottom plate (12) at the bottom inside. The confluence bottom plate is set around the bottom of the storage tank and surrounds the bottom inside the storage tank into a concave cone or inclined plane.

6. The packaging and storage device for modified isocyanates according to claim 1, characterized in that, The shut-off valve (3) also includes a feed valve port (33) for injecting materials. The discharge valve port, nitrogen inlet valve port, feed valve port and connecting valve port are all equipped with quick adapters at their outer ends.

7. The packaging and storage device for modified isocyanates according to claim 2, characterized in that, The gas-permeable liquid-blocking membrane (211) is specifically a polytetrafluoroethylene microporous membrane.

8. The packaging and storage device for modified isocyanates according to claim 1, characterized in that, The storage tank (1) is provided with a locking mechanism (11) on the top of its outer side. The lid is detachably fixed to the storage tank through the locking mechanism. The locking mechanism is specifically a lever-type quick-lock clamp.

9. The packaging and storage device for modified isocyanates according to claim 1, characterized in that, The top of the storage tank (1) is also provided with a sealing ring, which is used to seal the tank lid when it is connected to the storage tank lid.

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