Barrel type container for safely storing isocyanate

Abstract

The utility model relates to the technical field of chemical containers, in particular to a barrel type container for safely storing isocyanate, which comprises a barrel body, a safety pressure relief piece is integrally formed and fixedly connected on the outer side wall of the middle of the barrel body, and an external thread is arranged on the outer side wall of the upper part of the barrel body above the safety pressure relief piece. An upper cover unit is installed on the outer thread portion of the barrel in a screwed mode, the bottom of the upper cover unit abuts against the corresponding position of the top of the safety pressure relief piece, inlet ends of the bottom of the safety pressure relief piece are communicated with a pressure relief channel in the outer side wall of the lower portion of the barrel, and the connecting portions of the inlet ends and the pressure relief channel are sealed. The safety pressure relief pieces are communicated with the pressure relief channel at the bottom of the barrel in a sealed mode, the pressure relief pieces can accurately control pressure relief, the buffer cavity can slow down the pressure relief speed, graded pressure relief is achieved in cooperation with the multiple safety pressure relief pieces and the pressure relief pieces with different opening pressures, and the barrel is effectively prevented from being broken due to abnormal rising of internal pressure; and the safety of isocyanate storage is ensured.

Description

Technical Field

[0001] This utility model relates to the field of chemical container technology, and in particular to a barrel-type container for the safe storage of isocyanates. Background Technology

[0002] Traditional chemical raw material storage tanks serve to achieve a certain degree of sealed storage of chemical raw materials, preventing leakage and protecting the environment. Some also have functions such as easy handling and temperature control, meeting the basic storage needs of some conventional chemical raw materials.

[0003] A search revealed a chemical raw material storage tank disclosed in patent publication number CN206782528U. Its main structure includes an outer tank, a lid, an exhaust valve pipe, a thermal insulation jacket, and an inner tank. The outer tank provides protection and support, the lid is used for sealing, the thermal insulation jacket regulates the temperature, and the inner tank stores chemical raw materials. When in operation, it can store particulate chemical raw materials and ordinary fluid raw materials.

[0004] However, due to the high activity, toxicity, and moisture sensitivity of isocyanates, ordinary chemical drums are insufficient to meet their storage requirements. Therefore, existing chemical raw material storage drums have the following shortcomings and safety hazards when storing isocyanates:

[0005] First, the storage container relies solely on a sealing ring attached to the bottom of the lid. During long-term storage, the sealing ring is susceptible to corrosion from volatile isocyanate gases and changes in storage environment temperature and humidity, which accelerates aging and hardening, leading to a decline in sealing performance.

[0006] Secondly, during storage, isocyanates may experience increased pressure inside the container due to their own chemical reactions or changes in ambient temperature. This increased pressure can cause the sealing rings to shift, deform, or even be forced open, leading to seal failure and isocyanate leakage. Leaked isocyanate not only causes material loss but also poses hazards to human health and the environment.

[0007] Based on this, the present invention optimizes the design of chemical raw material storage tanks in the prior art and proposes a tank-type container for safe storage of isocyanates, so as to better solve the problems existing in the prior art. Utility Model Content

[0008] To solve one of the aforementioned technical problems, the present invention provides the following technical solution: a barrel-shaped container for safely storing isocyanate, comprising a cylindrical body, a safety pressure relief component integrally formed and fixed to the outer wall of the middle part of the cylindrical body, an external thread provided on the upper outer wall of the cylindrical body above the safety pressure relief component, a top cover unit screwed onto the external thread of the cylindrical body, the bottom of the top cover unit abutting against the corresponding position on the top of the safety pressure relief component, each inlet end of the bottom of the safety pressure relief component being connected to a pressure relief channel on the lower outer wall of the cylindrical body and the connection is sealed, and a plurality of magnetically attached components are spaced apart on the circumferential side wall of the safety pressure relief component.

[0009] In any of the above embodiments, the preferred embodiment includes a square body integrally formed and fixed to the middle outer wall of the cylinder. Buffer cavities are respectively provided at the top of the four corners of the square body. A pressure relief component is sealed and fixedly installed at the bottom of each buffer cavity. The inlet end of the pressure relief component is sealed and connected to the pressure relief channel at the corresponding position of the cylinder, and the two are internally connected. A sealing plug with a sealing ring is provided at the upper opening of each buffer cavity, and the top of each sealing plug is grounded to the bottom of the upper cover unit.

[0010] In any of the above embodiments, it is preferred that the pressure relief component includes a safety valve, the upper port of which is fixedly connected to the buffer chamber and the connection is sealed, and the lower port of which is fixedly connected to the outer wall of the cylinder at the pressure relief channel via a connecting bend and the connection is sealed.

[0011] In any of the above schemes, it is preferred that the number of the safety relief components is N, where N is a natural number ≥ 2.

[0012] In any of the above solutions, it is preferred that the safety opening pressure of the safety valve inside each of the pressure relief components is different.

[0013] In any of the above embodiments, preferably, the upper cover unit includes a sealing cover threadedly installed on the upper outer side wall of the cylinder, a central plug is provided at the bottom center of the sealing cover, an annular sealing cavity is provided on the outer side of the central plug, the bottom edge of the sealing cover abuts against the top of each of the sealing plugs, the top of the cylinder is sealed and tightly abutted against the top of the annular sealing cavity, the outer side wall of the annular sealing cavity is threaded onto the external thread section of the cylinder through an internal thread, and the central plug is installed at the upper opening of the cylinder.

[0014] In any of the above embodiments, it is preferred that a multi-stage seal is installed on the outer wall of the central plug.

[0015] In any of the above embodiments, it is preferred that the multi-stage sealing element includes sealing rings spaced from top to bottom within grooves on the outer sidewall of the central plug, and each sealing ring respectively abuts against an annular groove on the upper inner sidewall of the cylinder.

[0016] In any of the above embodiments, it is preferred that a pressure gauge is installed on the top of the sealing cover.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. The pressure relief device is sealed and connected to the pressure relief channel at the bottom of the cylinder through a safety relief device (such as a safety valve), and the pressure relief device (such as a safety valve) can accurately control the pressure release. The buffer chamber can slow down the pressure release rate. With the cooperation of multiple safety relief devices and pressure relief devices with different opening pressures, staged pressure relief can be achieved, which can effectively prevent the cylinder from rupturing due to abnormal increase in internal pressure and ensure the safety of storing isocyanates.

[0019] 2. The multiple sealing design of the central plug, annular sealing cavity and cylinder of the top cover unit, as well as the sealing structure of the safety pressure relief plug, plus the tight fit between the multi-stage sealing ring on the outer wall of the central plug and the annular groove on the inner wall of the upper part of the cylinder, form multiple sealing defenses, effectively preventing isocyanate leakage and ensuring the sealing of the container during storage.

[0020] 3. The strong magnetic blocks in the magnetic coupling component cause adjacent barrel-shaped containers to attract each other and fit tightly during transportation, maintaining relative stability and reducing collisions caused by bumps and shaking. At the same time, it helps containers to be neatly arranged during storage and transportation, improving space utilization.

[0021] 4. The pressure gauge installed on the top of the sealing cover is connected to the inside of the cylinder, allowing operators to monitor the pressure inside the cylinder in real time, promptly detect abnormal pressure conditions, and take measures such as adjusting the storage environment or depressurizing to ensure the safety of storage and transportation. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn to scale.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a top view of the cylinder body and the safety pressure relief component installed on it according to this utility model.

[0025] Figure 3 for Figure 2Schematic diagram of the cross-sectional structure along the AA direction.

[0026] Figure 4 for Figure 1 A schematic diagram of a local cross-sectional structure under local conditions.

[0027] Figure 5 This is a schematic diagram of the internal structure of the upper cover unit of this utility model.

[0028] Figure 6 This is a partial three-dimensional structural schematic diagram of the present invention.

[0029] Parts list: 1. Cylinder; 2. Pressure relief channel; 3. Sealing plug; 4. Buffer chamber; 5. Safety valve; 6. Connecting bend; 7. Sealing cover; 8. Center plug; 9. Annular sealing chamber; 10. Strong magnetic block; 11. Sealing ring; 12. Annular groove; 13. Pressure gauge; 14. Square body. Detailed Implementation

[0030] The embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of the present utility model, and are therefore merely examples and should not be construed as limiting the scope of protection of the present utility model. The specific structure of the present utility model is as follows: Figures 1-6 As shown in the image.

[0031] Example 1: A barrel-type container for safely storing isocyanate includes a cylindrical body 1. A safety pressure relief component is integrally formed and fixed to the outer wall of the middle part of the cylindrical body 1. An external thread is provided on the upper outer wall of the cylindrical body 1 above the safety pressure relief component. A top cover unit is screwed onto the external thread of the cylindrical body 1. The bottom of the top cover unit abuts against the corresponding position on the top of the safety pressure relief component. Each inlet end of the bottom of the safety pressure relief component is connected to a pressure relief channel 2 on the lower outer wall of the cylindrical body 1, and the connection is sealed. A plurality of magnetically attached components are installed at intervals on the circumferential side wall of the safety pressure relief component.

[0032] The barrel-type container for safe storage of isocyanate of this utility model is mainly composed of a barrel body 1, a safety pressure relief component, a top cover unit and a magnetic attraction component. Isocyanate is filled into the internal space of the barrel body 1, and the barrel body 1 stores isocyanate.

[0033] The safety pressure relief component is integrally formed on the outer wall of the middle part of the cylinder 1. The bottom of the cylinder 1 is sealed and connected to the pressure relief channel 2 of the cylinder 1, which can release excess pressure in time and relieve pressure when the internal pressure is abnormal, thus ensuring safety. The two adjacent barrel-shaped containers can be relatively pressed together during transportation and rely on magnetic coupling components to ensure relative stability during transportation.

[0034] The barrel-shaped container for safe storage of isocyanate in this utility model relies on the internal space of the barrel 1 as the storage space when storing isocyanate. After the isocyanate is placed inside the barrel 1, the sealing plugs 3 of the safety pressure relief components are installed on the upper part of the corresponding buffer chambers 4 in sequence and kept sealed and locked. Then, the upper cover unit can be screwed onto the upper part of the barrel 1 to complete the seal. The bottom of the upper cover unit is pressed against the bottom of the corresponding sealing plug 3 to achieve secondary compression of each sealing plug 3. At the same time, the upward pressing of the sealing plug 3 can also achieve anti-detachment locking of the upper cover unit. The two cooperate to lock and prevent detachment.

[0035] In any of the above embodiments, the preferred embodiment includes a square body 14 integrally formed and fixed to the middle outer wall of the cylinder 1. Buffer cavities 4 are respectively provided at the top of the four corners of the square body 14. A pressure relief component is sealed and fixedly installed at the bottom of each buffer cavity 4. The inlet end of the pressure relief component is sealed and connected to the pressure relief channel 2 at the corresponding position of the cylinder 1, and the two are internally connected. A sealing plug 3 with a sealing ring is provided at the upper opening of each buffer cavity 4 through a threaded connection. The top of each sealing plug 3 is grounded to the bottom of the upper cover unit.

[0036] When the pressure inside cylinder 1 increases due to factors such as the chemical reaction of isocyanate itself or temperature changes, the pressure is transmitted to the safety relief device through the pressure relief channel 2 on the lower outer wall of cylinder 1. The pressure relief device (such as safety valve 5) opens when the set opening pressure is reached, and the pressure medium enters the buffer chamber 4 through the pressure relief device. The buffer chamber 4 slows down the pressure release rate, preventing a sudden pressure release from impacting cylinder 1. After pressure relief is completed, when the pressure drops below the closing pressure of safety valve 5, safety valve 5 closes, stopping pressure relief and ensuring that the internal pressure of cylinder 1 remains within a safe range. Multiple safety relief devices and pressure relief devices with different opening pressures can achieve staged pressure relief, allowing for more precise control of pressure changes.

[0037] In any of the above embodiments, it is preferred that the pressure relief component includes a safety valve 5, the upper port of the safety valve 5 is fixedly connected to the buffer chamber 4 and the connection is sealed, and the lower port of the safety valve 5 is fixedly connected to the outer wall of the cylinder 1 at the pressure relief channel 2 through a connecting bend 6 and the connection is sealed.

[0038] Safety valve 5 precisely controls the timing and extent of pressure release. Different isocyanate storage conditions have different requirements for the upper pressure limit, which is addressed by setting the opening and closing pressures of safety valve 5. Safety valve 5 works in conjunction with buffer chamber 4, which buffers the instantaneous pressure release. When safety valve 5 opens to release pressure, the pressure medium first enters buffer chamber 4, which slows down the rate of pressure release, preventing a sudden surge of pressure from impacting the container body 1 and surrounding equipment, thus further enhancing the container's safety.

[0039] In any of the above schemes, it is preferred that the number of the safety relief components is N, where N is a natural number ≥ 2.

[0040] Individual pressure relief components carry the risk of failure. When one safety pressure relief component fails due to damage, blockage, or other reasons, the others can still function normally and continue to perform their pressure relief function. This significantly improves the reliability of the entire pressure relief system, ensuring that the container has effective pressure relief capabilities under various complex conditions and preventing safety accidents caused by the failure of a single component.

[0041] In any of the above schemes, it is preferred that the safety opening pressure of the safety valve 5 inside each of the pressure relief components is different.

[0042] As the pressure inside the container gradually increases, the safety valve 5 with the lower opening pressure will open first to release pressure. This allows for timely release of some pressure when there is a slight pressure abnormality, preventing the pressure from continuing to rise rapidly. As the pressure increases further, the safety valves 5 with higher opening pressures open sequentially, gradually increasing the pressure relief. This staged pressure relief method allows for more precise control of pressure changes inside the container, preventing sudden and large pressure fluctuations from impacting the container and ensuring its structural safety. For example, during the process of isocyanate pressure rising due to a slow increase in temperature, the safety valve 5 with the lower opening pressure will activate first, releasing a small amount of pressure; if the temperature continues to rise, the safety valve 5 with the higher opening pressure will then open, ensuring that the pressure remains within a safe range.

[0043] In any of the above embodiments, preferably, the upper cover unit includes a sealing cover 7 threadedly installed on the upper outer side wall of the cylinder 1. A center plug 8 is provided at the bottom center of the sealing cover 7, and an annular sealing cavity 9 is provided on the outer side of the center plug 8. The bottom edge of the sealing cover 7 abuts against the top of each of the sealing plugs 3. The top of the cylinder 1 is sealed and tightly abutted against the top of the annular sealing cavity 9. The outer side wall of the annular sealing cavity 9 is threaded onto the external thread section of the cylinder 1 through an internal thread. The center plug 8 is sealed at the upper opening of the cylinder 1.

[0044] The central plug 8 of the upper cover unit seals the upper opening of the cylinder 1, and the annular sealing cavity 9 is tightly sealed against the top of the cylinder 1. Simultaneously, the internal thread on its outer wall engages with the external thread on the upper part of the cylinder 1, enhancing the sealing effect. The multi-stage sealing ring 11 on the outer wall of the central plug 8 tightly fits with the annular groove 12 on the inner wall of the upper part of the cylinder 1, forming multiple sealing lines to further prevent isocyanate leakage. The sealing plug 3 of the safety relief component, through threaded connection and sealing rings, ensures the sealing of the buffer cavity 4, preventing pressure leakage.

[0045] In any of the above embodiments, it is preferred that the magnetic attraction component includes a plurality of strong magnetic blocks 10 fixedly installed in the corresponding cavities on the outer side walls of the square body 14, with the outer ends of each strong magnetic block 10 being flush with the outer side walls of the square body 14.

[0046] The magnetic assemblies help keep containers neatly arranged during storage and transportation. By attracting each other magnetically, containers can be arranged according to certain rules, improving space utilization. This is especially beneficial in warehouse storage or when loading containers onto transport vehicles, allowing for a more compact and orderly container layout.

[0047] Example 2: Compared with Example 1, this example also includes the following technical features:

[0048] In any of the above embodiments, it is preferred that a multi-stage seal is installed on the outer wall of the central plug 8.

[0049] In any of the above embodiments, it is preferred that the multi-stage sealing element includes sealing rings 11 spaced from top to bottom and fitted into grooves on the outer sidewall of the central plug 8, and each sealing ring 11 is respectively fitted into an annular groove 12 on the upper inner sidewall of the cylinder 1.

[0050] A single sealing ring cannot completely eliminate tiny gaps, and isocyanates are highly volatile and corrosive; even a small leak can cause safety issues. Multi-stage sealing uses multiple sealing rings 11 working together to form multiple lines of defense. When isocyanate attempts to leak from the connection between the central plug 8 and the cylinder 1, each sealing ring 11 blocks it, providing layered protection and effectively filling any potential leakage channels. This greatly enhances the reliability of the seal and ensures that the isocyanate is safely sealed within the cylinder 1.

[0051] In any of the above embodiments, it is preferred that a pressure gauge 13 is installed on the top of the sealing cover 7.

[0052] The pressure gauge 13, installed on top of the sealing cover 7, is connected to the inside of the cylinder 1 to monitor the pressure inside the cylinder 1 in real time. Operators can determine the storage status of isocyanate inside the container based on the pressure value, promptly detect abnormal pressure, and take appropriate measures, such as adjusting the storage environment or performing pressure relief operations, to ensure storage and transportation safety.

[0053] Specific working principle: During installation, first, the sealing plug 3 on the safety relief component is installed on the upper part of the buffer chamber 4, and then the upper cover unit is screwed onto the upper part of the cylinder 1. The bottom of the upper cover unit presses against the sealing plug 3 to achieve a secondary seal; the sealing plug 3 pushes the upper cover unit upward, and the two cooperate with each other to prevent the upper cover unit from loosening and falling off, ensuring the sealing of the container during storage and avoiding isocyanate leakage.

[0054] During transportation, adjacent barrel-shaped containers are attracted to each other by magnetic coupling components. The strong magnetic block 10 in the magnetic coupling component is fixed in the cavity on the outer wall of the square body 14 of the safety pressure relief component, with its outer end flush with the outer wall of the square body 14, so that the adjacent containers fit tightly together. The magnetic force is used to maintain relative stability, reduce collisions caused by bumps and shaking, and protect the containers and the isocyanate inside.

[0055] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. For those skilled in the art, any alternative improvements or transformations made to the implementation of this utility model fall within the protection scope of this utility model.

[0056] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A drum container for the safe storage of isocyanates, characterized in that: The application relates to a safety pressure relief device, which comprises a cylinder body, a safety pressure relief device integrally formed and fixedly connected to the outer side wall of the middle part of the cylinder body, an outer thread provided on the upper outer side wall of the cylinder body above the safety pressure relief device, an upper cover unit screw-coupled to the outer thread part of the cylinder body, the bottom of the upper cover unit abutting against the corresponding position of the top of the safety pressure relief device, the bottom of the safety pressure relief device being connected to the pressure relief channels on the lower outer side wall of the cylinder body and being sealed at the connecting part, and a plurality of magnetic attraction parts being installed on the circumferential side wall of the safety pressure relief device at intervals.

2. A bucket container for the safe storage of isocyanates according to claim 1, characterized in that: The safety pressure relief device comprises a square body integrally formed and fixedly connected to the outer side wall of the middle part of the cylinder body, a buffer cavity provided at the top of each corner of the square body, a pressure relief device sealingly and fixedly installed at the bottom of each buffer cavity, the inlet end of the pressure relief device being sealingly connected to the pressure relief channel at the corresponding position of the cylinder body and the two being connected to each other, a plugging plug being provided at the upper opening of each buffer cavity and being connected through a thread and a sealing ring, and the top of each plugging plug abutting against the bottom of the upper cover unit.

3. A bucket container for the safe storage of isocyanate according to claim 2, characterized in that: The pressure relief device comprises a safety valve, the upper port of the safety valve being fixedly connected to the buffer cavity and being sealed at the connecting part, and the lower port of the safety valve being fixedly connected to the outer side wall of the cylinder body at the pressure relief channel and being sealed at the connecting part.

4. A bucket container for the safe storage of isocyanate according to claim 3, characterized in that: The number of the safety pressure relief devices is N, wherein N is a natural number greater than or equal to 2.

5. A bucket container for the safe storage of isocyanate according to claim 4, characterized in that: The safety opening pressures of the safety valves in the pressure relief devices are different.

6. A bucket container for the safe storage of isocyanate according to claim 5, characterized in that: The upper cover unit comprises a plugging upper cover screw-coupled to the upper outer side wall of the cylinder body, a center plug provided at the bottom center of the plugging upper cover, an annular sealing cavity provided outside the center plug, the bottom edge of the plugging upper cover abutting against the top of each plugging plug, the top of the cylinder body being sealingly and tightly abutted against the top of the annular sealing cavity, the outer side wall of the annular sealing cavity being screw-coupled to the outer thread segment of the cylinder body through an inner thread, and the center plug being sealingly plugged into the upper opening of the cylinder body.

7. A bucket container for the safe storage of isocyanate according to claim 6, characterized in that: A multistage sealing element is installed on the outer side wall of the center plug.

8. A bucket container for the safe storage of isocyanate according to claim 7, characterized in that: The multistage sealing element comprises sealing rings which are clamped into the clamping grooves on the outer side wall of the center plug at intervals from top to bottom, and each sealing ring is abutted against and matched with the annular groove at the upper inner side wall of the cylinder body.

9. A bucket container for the safe storage of isocyanate according to claim 8, characterized in that: A pressure gauge is installed on the top of the plugging upper cover.

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