Solvent tank automatically balancing internal and external pressure difference

Abstract

The utility model relates to a kind of solvent bucket of automatic balance inner and outer pressure difference, including bucket body, cover body, breathable waterproof plug;The upper end opening of bucket body is formed with annular neck part, annular neck part is equipped with first annular groove, is equipped with convex point in first annular groove, annular support portion is extended outward horizontally in the lower end outside of annular neck part, and, breathable hole is equipped in annular neck part, breathable hole is located below first annular groove;Cover body includes circular top plate, inner ring circumferential side plate, annular top plate, outer ring circumferential side plate, annular reinforcing convex rib is protruded upward in the top surface of circular top plate, second annular groove is recessed in the inner side surface of outer ring circumferential side plate, sealing ring is embedded in second annular groove, the inner end of breathable waterproof plug is inserted in breathable hole and because the outer wall surface of breathable waterproof plug and the inner wall surface of breathable hole will form sealed contact;It realizes the pressure difference balance of solvent bucket while breathable waterproof, multiple sealing, effectively solve the problem of sealing and ventilation.

Description

Technical Field

[0001] This utility model relates to the technical field of solvent tanks that automatically balance internal and external pressure differences, and in particular to a solvent tank that automatically balances internal and external pressure differences. Background Technology

[0002] Solvent tanks are specialized containers used for storing and transporting organic solvents (such as alcohol, acetone, paint solvents, chemical reagents, etc.). Their core requirements are leak prevention, resistance to solvent corrosion, and adaptability to pressure changes caused by solvent volatility. They also need to meet waterproof requirements in outdoor or humid environments.

[0003] The design of solvent tanks needs to be based on the "solvent characteristics," with different solvents (volatility, corrosiveness, flammability) requiring different materials and structures.

[0004] Material selection: The mainstream materials used are high-density polyethylene (HDPE) or polypropylene (PP) (resistant to most organic solvents, lightweight, and impact resistant); metal drums (galvanized steel or stainless steel) lined with fluoropolymer are required for highly corrosive solvents (such as strong acids and strong alkalis); and explosion-proof structures (such as antistatic coatings and explosion-proof covers) are required for highly volatile and flammable solvents (such as ethanol and toluene).

[0005] Basic structure: Includes barrel body (with reinforcing ribs to prevent deformation caused by air pressure changes), sealing cap (threaded or snap-on type, equipped with nitrile rubber / fluororubber sealing ring, basic sealing and leak prevention), handle / forklift slot (for easy handling), some large barrels (200L industrial barrels) are also designed with bottom discharge valve (for easy access).

[0006] The pressure difference in the solvent tank originates from "solvent evaporation" and "environmental changes." Imbalance can lead to safety hazards and usage problems.

[0007] Increased internal pressure: Organic solvents are volatile (e.g., the saturated vapor pressure of acetone reaches 24 kPa at 25°C). The volatile gases accumulate inside the container, causing the internal pressure to be higher than the external atmospheric pressure. This can cause the container to bulge and the sealing cap to deform, or even lead to leakage (the sealing ring is forced open by the pressure). If the solvent is flammable, the leakage may also cause a fire or explosion.

[0008] Internal pressure reduction: When the solvent is removed (the internal space of the container increases), or the ambient temperature drops (the gas contracts), the internal pressure will be lower than the external atmospheric pressure, causing the container to be "sucked out" (especially for HDPE soft containers). This not only damages the container structure, but also makes it impossible to open the lid normally (negative pressure adsorption) or to discharge the material smoothly (pressure difference hinders the flow of solvent).

[0009] Therefore, the core of "pressure differential balance" is to allow the air pressure inside and outside the barrel to be dynamically adjusted: when the internal pressure is too high, excess gas is discharged, and when the internal pressure is too low, outside air is drawn in. At the same time, it is necessary to avoid "water or solvent leakage when adjusting the air pressure" - which requires the cooperation of "breathable and waterproof" functions.

[0010] Therefore, in this utility model patent application, the applicant has carefully researched a solvent tank that automatically balances the internal and external pressure difference to solve the above problems. Utility Model Content

[0011] This invention addresses the shortcomings of the existing technology by providing a solvent tank that automatically balances the internal and external pressure difference. It achieves pressure balance while being breathable, waterproof, and multi-sealed, effectively solving the problems of sealing and breathability.

[0012] To achieve the above objectives, the present invention adopts the following technical solution:

[0013] A solvent container that automatically balances internal and external pressure differences includes a container body, a lid, and a breathable and waterproof plug;

[0014] The upper opening of the barrel body forms a circular neck. The outer circumferential surface of the circular neck is provided with a first circular groove extending in the same direction. Several protrusions are arranged at circumferential intervals in the first circular groove. A circular support portion extends horizontally outward from the lower outer side of the circular neck. A vent hole extending radially is provided on the circular neck. The vent hole is located below the first circular groove.

[0015] The cover includes a circular top plate, an inner circumferential side plate extending integrally upward from the outer circumference of the circular top plate, an annular top plate extending integrally outward horizontally from the top of the inner circumferential side plate, and an outer circumferential side plate extending integrally downward from the outer circumference of the annular top plate. An annular reinforcing rib is provided protruding upward from the top surface of the circular top plate, and a second annular groove is provided recessed on the inner side surface of the outer circumferential side plate. A sealing ring is embedded in the second annular groove, and an annular protrusion is provided on the outer side surface of the outer circumferential side plate corresponding to the location of the second annular groove.

[0016] The lid is placed on the upper opening of the barrel, with its circular top plate sinking into the circular neck and its inner circumferential side plate also sinking into the circular neck. The circular top plate is located at the top of the circular neck, and the outer circumferential side plate is fitted around the outer circumference of the circular neck. The sealing ring on the lid is inserted into the first annular groove.

[0017] The inner end of the breathable and waterproof plug is inserted into the vent hole, and the outer wall of the breathable and waterproof plug will form a sealed contact with the inner wall of the vent hole.

[0018] As a preferred embodiment, it also includes a sealing clamp, which is fitted around the outside of the outer circumferential side plate and engaged at the annular protrusion.

[0019] As a preferred option, the breathable and waterproof plug is a hollow cylinder with a closed inner end and a hollow, open outer end.

[0020] As a preferred option, the outer diameter of the breathable and waterproof plug is slightly larger than the diameter of the vent holes.

[0021] As a preferred option, the inner end of the breathable and waterproof plug has a tapered guide structure.

[0022] As a preferred embodiment, the sealing clamp extends in a C-shape.

[0023] As a preferred embodiment, the two ends of the sealing band are connected by a locking buckle to tightly fasten the cover to the annular neck of the barrel. After the sealing band is locked, a small air gap is still maintained between the outer circumferential side plate and the annular neck to allow a small amount of gas to flow through the breathable and waterproof plug.

[0024] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, it mainly features the specific structural design of the breathable and waterproof plug, the barrel body, and the lid body, which achieves pressure difference balance of the solvent barrel while being breathable and waterproof, and providing multiple seals, effectively solving the problems of sealing and breathability.

[0025] Secondly, the breathable and waterproof plug is a hollow cylinder with a closed inner end and a hollow, open outer end. The outer diameter of the breathable and waterproof plug is slightly larger than the diameter of the vent hole, and the inner end of the plug has a gradually decreasing guide structure, making it easy to insert the breathable and waterproof plug into the vent hole from the outside in. In this way, when the breathable and waterproof plug is inserted into the vent hole, it is compressed into the vent hole, forming a waterproof and breathable seal that will not loosen because the outer wall of the cylinder and the inner wall of the vent hole will form a sealing contact. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the cover structure according to an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the barrel structure according to an embodiment of the present utility model;

[0028] Figure 3 This is a partially enlarged structural schematic diagram of an embodiment of the present invention (mainly showing the barrel body, lid, breathable and waterproof plug, and sealing hoop).

[0029] Explanation of icon numbers:

[0030] 10. Barrel body 11. Circular neck

[0031] 111. Ventilation holes

[0032] 12. First annular groove 121. Protrusion

[0033] 13. Circular support section

[0034] 20. Cover

[0035] 21. Circular top plate; 211. Annular reinforcing ribs.

[0036] 22. Inner ring side plate

[0037] 23. Annular top plate; 24. Outer circumferential side plate

[0038] 241. Second annular groove; 242. Sealing ring

[0039] 243. Annular protrusion

[0040] 30. Breathable and waterproof plug

[0041] 40. Sealing hoop. Detailed Implementation

[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0043] like Figures 1 to 3 As shown, a solvent container that automatically balances the internal and external pressure difference includes a container body 10, a lid 20, a breathable and waterproof plug 30, and a sealing ring 40.

[0044] A circular neck 11 is formed at the upper opening of the barrel body 10. A first annular groove 12 extending in the same direction is provided on the outer peripheral surface of the circular neck 11. A plurality of protrusions 121 arranged at circumferential intervals are provided in the first annular groove 12. An annular support portion 13 extends horizontally outward from the lower outer side of the circular neck 11. A radially extending vent hole 111 is provided on the circular neck 11. The vent hole 111 is located below the first annular groove 12.

[0045] The cover 20 includes a circular top plate 21, an inner circumferential side plate 22 extending upward from the outer circumference of the circular top plate 21, an annular top plate 23 extending horizontally outward from the top of the inner circumferential side plate 22, and an outer circumferential side plate 24 extending downward from the outer circumference of the annular top plate 23. An annular reinforcing rib 211 is provided upward on the top surface of the circular top plate 21, and a second annular groove 241 is provided recessed on the inner side surface of the outer circumferential side plate 24. A sealing ring 242 is embedded in the second annular groove 241, and an annular protrusion 243 is provided on the outer side surface of the outer circumferential side plate 24 corresponding to the location of the second annular groove 241.

[0046] The lid 20 is closed on the upper opening of the barrel 10. Its circular top plate 21 is sunk into the annular neck 11, and its inner circumferential side plate 22 is also sunk into the annular neck 11. The annular top plate 23 is located at the top of the annular neck 11, and the outer circumferential side plate 24 is fitted around the outer circumference of the annular neck 11. The sealing ring 242 on the lid 20 is engaged in the first annular groove 12.

[0047] The inner end of the breathable and waterproof plug 30 is inserted into the vent hole 111, and a sealing contact is formed between the outer wall surface of the breathable and waterproof plug 30 and the inner wall surface of the vent hole 111. In this embodiment, the breathable and waterproof plug 30 is a hollow cylinder with a closed inner end and a hollow, through outer end. The outer diameter of the breathable and waterproof plug 30 is slightly larger than the diameter of the vent hole 111, and the inner end of the breathable and waterproof plug 30 has a gradually decreasing guide structure, which facilitates inserting the breathable and waterproof plug 30 into the vent hole 111 from the outside in. In this way, when the breathable and waterproof plug 30 is inserted into the vent hole 111, it is squeezed into the vent hole 111, forming a waterproof and breathable seal that will not loosen because the cylindrical outer wall surface and the inner wall surface of the vent hole 111 form a sealing contact.

[0048] The sealing hoop 40 is fitted onto the outside of the outer circumferential side plate 24 and secured at the annular protrusion 243. The sealing hoop 40 extends in a C-shape. The two ends of the sealing hoop 40 are connected by a locking buckle to tightly fasten the cover 20 to the annular neck 11 of the barrel body 10. After the sealing hoop 40 is locked, a small air gap is still maintained between the outer circumferential side plate 24 and the annular neck 11 to allow a small amount of gas to pass through the breathable and waterproof plug 30.

[0049] The following is a brief explanation of how to use this embodiment:

[0050] After the solvent is filled, the cap 20 is first placed over the opening at the top of the container 10. The circular top plate 21 of the cap 20 is recessed into the annular neck 11, and its inner circumferential side plate 22 is also recessed into the annular neck 11. The annular top plate 23 is located at the top of the annular neck 11, and the outer circumferential side plate 24 is fitted around the outer circumference of the annular neck 11. The sealing ring 242 on the cap 20 is inserted into the first annular groove 12. The outer circumferential side plate 24 of the cap 20 has a pre-thinned section corresponding to the outside of the breathable and waterproof plug 30 to facilitate the formation of an air gap. Then, the sealing band 40 is installed. The sealing band 40 extends in a C-shape, and its vertical cross-section is also similar to a C-shape. It is fitted over the outside of the outer circumferential side plate 24 of the cap and secured at the annular protrusion 243. Then, the two ends of the sealing band 40 are locked, so that the sealing band 40 tightly clamps the cap 20 onto the annular neck 11 of the container 10. Furthermore, after the sealing clamp 40 is locked, a small air gap is still maintained between the outer ring circumference and the circular neck 11 to allow a small amount of gas to pass through the breathable and waterproof plug 30.

[0051] The key design feature of this utility model lies in the specific structural design of the breathable and waterproof plug, the barrel body, and the lid body. This design achieves pressure differential balance in the solvent barrel while ensuring breathability, waterproofing, and multiple seals, effectively solving the problems of sealing and breathability.

[0052] Secondly, the breathable and waterproof plug is a hollow cylinder with a closed inner end and a hollow, open outer end. The outer diameter of the breathable and waterproof plug is slightly larger than the diameter of the vent hole, and the inner end of the plug has a gradually decreasing guide structure, making it easy to insert the breathable and waterproof plug into the vent hole from the outside in. In this way, when the breathable and waterproof plug is inserted into the vent hole, it is compressed into the vent hole, forming a waterproof and breathable seal that will not loosen because the outer wall of the cylinder and the inner wall of the vent hole will form a sealing contact.

[0053] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A solvent tank that automatically balances internal and external pressure differences, characterized in that: It includes a barrel body, a lid, and a breathable and waterproof plug; The upper opening of the barrel body forms a circular neck. The outer circumferential surface of the circular neck is provided with a first circular groove extending in the same direction. Several protrusions are arranged at circumferential intervals in the first circular groove. A circular support portion extends horizontally outward from the lower outer side of the circular neck. A vent hole extending radially is provided on the circular neck. The vent hole is located below the first circular groove. The cover includes a circular top plate, an inner circumferential side plate extending integrally upward from the outer circumference of the circular top plate, an annular top plate extending integrally outward horizontally from the top of the inner circumferential side plate, and an outer circumferential side plate extending integrally downward from the outer circumference of the annular top plate. An annular reinforcing rib is provided protruding upward from the top surface of the circular top plate, and a second annular groove is provided recessed on the inner side surface of the outer circumferential side plate. A sealing ring is embedded in the second annular groove, and an annular protrusion is provided on the outer side surface of the outer circumferential side plate corresponding to the location of the second annular groove. The lid is placed on the upper opening of the barrel, with its circular top plate sinking into the circular neck and its inner circumferential side plate also sinking into the circular neck. The circular top plate is located at the top of the circular neck, and the outer circumferential side plate is fitted around the outer circumference of the circular neck. The sealing ring on the lid is inserted into the first annular groove. The inner end of the breathable and waterproof plug is inserted into the vent hole, and the outer wall of the breathable and waterproof plug will form a sealed contact with the inner wall of the vent hole.

2. The solvent tank for automatically balancing internal and external pressure differences according to claim 1, characterized in that: It also includes a sealing clamp, which is fitted around the outside of the outer circumferential side plate and engaged at the annular protrusion.

3. The solvent tank for automatically balancing internal and external pressure differences according to claim 1, characterized in that: The breathable and waterproof plug is a hollow cylinder with a closed inner end and a hollow, open outer end.

4. The solvent tank with automatic internal and external pressure balancing according to claim 3, characterized in that: The outer diameter of the breathable and waterproof plug is slightly larger than the diameter of the vent hole.

5. The solvent tank with automatic internal and external pressure balancing according to claim 4, characterized in that: The inner end of the breathable and waterproof plug features a tapered guide structure.

6. The solvent tank for automatically balancing internal and external pressure differences according to claim 2, characterized in that: The sealing band extends in a C-shape.

7. The solvent tank for automatically balancing internal and external pressure differences according to claim 6, characterized in that: The two ends of the sealing hoop are connected by a locking buckle to tightly fasten the cover to the annular neck of the barrel. After the sealing hoop is locked, a small air gap is still maintained between the outer circumferential side plate and the annular neck to allow a small amount of gas to pass through the breathable and waterproof plug.

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