Pressure self-adjusting barrel plug for preventing deformation of steel barrel
By installing a one-way flow valve on the steel drum stopper to regulate the air pressure, the problem of steel drum deformation due to high-temperature liquid storage was solved, achieving stable air pressure and safe storage, and reducing production costs.
Patent Information
- Application Number
- CN202520597113.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-31
AI Technical Summary
The deformation of steel drums due to pressure differences after storing high-temperature liquids, especially the denting phenomenon when the drum wall thickness is not up to standard, has not been effectively solved by existing technologies.
Design a pressure self-regulating barrel stopper with a one-way flow valve to allow gas from outside the barrel to enter the barrel in one direction, regulate the pressure difference between the inside and outside of the barrel, and ensure stable gas pressure.
It effectively prevents steel drums from deforming, reduces material and transportation costs, and improves storage safety.
Smart Images
Figure CN223836182U_ABST
Abstract
Description
[Technical Field]
[0001] This utility model relates to the field of oil and chemical steel drum accessories, and in particular to a pressure self-regulating drum stopper that prevents steel drum deformation. [Background Technology]
[0002] Steel drums are a common type of liquid storage container, mainly used for storing oils or some chemical liquids. Their main structure includes a drum body and a lid on the drum body. The lid has inlet and outlet ports, which are both outlets and inlets. After the oils or chemical liquids are injected into the drum, the inlet and outlet ports are sealed with a stopper to facilitate storage and transportation.
[0003] However, during long-term daily operations or steel drum production, it has been observed that these steel drums can dent or deform when storing high-temperature liquids due to environmental temperature and pressure. This is because many oils or chemical liquids are typically at a certain temperature when poured into the drums, sometimes reaching 70°C-85°C. After these liquids are poured into the drums, workers immediately tighten the stoppers. Over time or after transportation, the drums are found to exhibit varying degrees of flattening or denting, especially those with substandard wall thickness.
[0004] Initially, it was thought that the flattening or denting was caused by impact. However, after long-term research, it was found that some containers that were stored naturally without being transported also experienced flattening or denting. Analysis revealed that this problem was caused by the high temperature of the oil initially poured in. If the container stopper was tightened immediately after pouring without cooling, the internal pressure of the grease or chemical liquid would decrease as the oil cooled inside the container, creating a negative pressure. This pressure difference between the inside and outside of the container, especially in containers with insufficient wall thickness, would cause flattening or denting under atmospheric pressure. [Utility Model Content]
[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a pressure self-adjusting barrel stopper to prevent steel barrel deformation, which can greatly reduce the probability of steel barrels being dented and deformed after being injected with high-temperature liquid.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0007] A pressure-adjustable plug for preventing deformation of a steel drum is provided for installation on the inlet / outlet of the steel drum lid. The plug includes a cover plate with a threaded connection on its outer peripheral sidewall for connecting to the inlet / outlet of the steel drum lid. The cover plate also has a positioning part for matching a tightening tool and a pressure regulating component for connecting the inside of the steel drum to the outside. The pressure regulating component is a one-way valve that allows air from outside the drum to flow into the drum in one direction. The opening pressure of the one-way valve is configured to be 0.1–0.13 MPa.
[0008] The beneficial effects of using this utility model are as follows:
[0009] In this invention, a pressure regulating component is provided on the barrel stopper. This pressure regulating component is a one-way flow valve, which only allows gas outside the barrel to flow into the barrel in one direction, while gas inside the barrel cannot flow out of the barrel. This is to prevent some liquids from evaporating due to long-term storage.
[0010] After the inlet and outlet are sealed with a stopper, if the temperature inside the steel drum drops to room temperature, a pressure difference will occur between the inside and outside of the drum. This will open the pressure regulator, allowing outside gas to enter until the pressure difference between the inside and outside of the drum becomes similar. At this point, the pressure regulator will close, ensuring optimal storage. After long-term testing, the opening pressure of the one-way valve was set at 0.1–0.13 MPa. Too low an opening pressure will cause the pressure regulator to open and close frequently, affecting the storage effect of the oil inside the drum. Too high an opening pressure will cause inward deformation of the drum body before the one-way valve even opens. A setting of 0.1–0.13 MPa is considered appropriate.
[0011] In addition, using this type of stopper makes the air pressure inside the barrel more stable, thereby eliminating certain safety hazards.
[0012] For manufacturers, the original method of increasing the thickness of the steel barrel to prevent deformation of the barrel body had to be changed, which greatly increased the manufacturing cost and the corresponding transportation cost. However, by using the barrel stopper of this utility model, the barrel body can be prevented from deforming while reducing the material cost of the barrel body.
[0013] Preferably, the one-way flow valve includes a valve body, the valve body having a hollow valve cavity, and the valve cavity having a valve stem and a return spring for resetting the valve stem.
[0014] Preferably, the valve body is provided with external threads, and a first nut and a second nut are provided on the external threads, and the base plate is clamped between the first nut and the second nut.
[0015] Preferably, a metal washer is provided on the outside of the valve body, and the metal washer is disposed between the base plate and the first nut; and / or, the metal washer is disposed between the base plate and the second nut.
[0016] Preferably, a first sealing ring is provided between the one-way flow valve and the base plate, and the first sealing ring is located between the first nut and the base plate; and / or, a second sealing ring is provided between the one-way flow valve and the base plate, and the second sealing ring is located between the second nut and the base plate.
[0017] Preferably, the portion of the one-way flow valve protruding from the barrel lid is fitted with a removable protective sleeve.
[0018] Preferably, the air pressure regulating component is located at the middle position on the side of the positioning part.
[0019] Preferably, the positioning part includes an intermediate connecting plate and raised lugs located on both sides of the intermediate connecting plate.
[0020] Preferably, the raised lug includes an outer connecting piece connected to the middle connecting plate and an inner connecting piece extending downward. The middle connecting plate has hollow holes on both sides, and the inner connecting piece extends downward and passes through the hollow holes before finally being fixedly connected to the base plate.
[0021] Preferably, the height of the raised lug is lower than the height of the outer wall of the barrel stopper.
[0022] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]
[0023] The present invention will be further described below with reference to the accompanying drawings:
[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;
[0025] Figure 2 This is a top view of Embodiment 1 of the present utility model;
[0026] Figure 3 for Figure 2 Schematic sectional view along the AA direction.
Detailed Implementation Methods
[0027] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.
[0028] In the following description, terms such as “inner,” “outer,” “upper,” “lower,” “left,” and “right” that indicate orientation or positional relationship are used only for the convenience of describing the embodiments and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0030] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0031] Example 1:
[0032] like Figures 1 to 3The illustration shows a pressure-adjustable plug for preventing deformation of a steel drum. It is installed on the inlet / outlet of the steel drum lid. The plug includes a base plate 1, which in this embodiment is circular. An outer peripheral wall 2 surrounds the base plate 1, extending upwards. The outer peripheral wall 2 has a threaded connection 21 for connecting to the inlet / outlet of the steel drum lid. A top sealing ring 22 matching the inlet / outlet is also provided on the outer peripheral wall 2. A positioning part 3 for a tightening tool is provided on the base plate 1. During sealing, the tightening tool is positioned on the positioning part 3, and rotating the tool tightens the plug to seal it to the inlet / outlet, thus sealing the steel drum. In this embodiment, a pressure regulating component 4 for connecting the inside of the steel drum to the outside is provided on the base plate 1. The pressure regulating component 4 is a one-way valve, allowing air from outside the drum to flow into the drum in one direction. The opening pressure of the one-way valve is configured to be 0.1–0.13 MPa.
[0033] Because this embodiment has a pressure regulating component 4 on the barrel stopper, which is a one-way flow valve, it only allows gas outside the barrel to flow into the barrel in one direction, while gas inside the barrel cannot flow out of the barrel. This is to prevent some liquids from evaporating due to long-term storage.
[0034] After the stopper seals the inlet and outlet, if the temperature inside the steel drum drops to room temperature, creating a pressure difference between the inside and outside of the drum, the pressure regulating component 4 will open, allowing outside gas to enter until the pressure difference between the inside and outside of the drum becomes similar. At this point, the pressure regulating component 4 will close, ensuring optimal storage. After long-term testing, the opening pressure of the one-way valve was configured to be 0.1–0.13 MPa. Too low an opening pressure would cause the pressure regulating component 4 to open and close frequently, affecting the storage effect of the oil inside the drum. Too high an opening pressure would cause the drum body to deform inwards before the one-way valve even opens. A pressure of 0.1–0.13 MPa is considered suitable, with 0.12 MPa being the preferred setting. Furthermore, using this type of stopper ensures more stable internal pressure, thus eliminating certain safety hazards.
[0035] For manufacturers, the original method required increasing the thickness of the steel barrel to prevent deformation, which significantly increased manufacturing and transportation costs. However, by using the barrel stopper of this embodiment, the barrel deformation can be prevented while reducing the material cost of the barrel.
[0036] The structure of the one-way flow valve specifically includes a valve body 41, which has a hollow valve cavity. The valve cavity contains a valve stem 40 and a return spring (not shown in the figure) for resetting the valve stem 40. Different opening pressures of the one-way flow valve can be set by using different specifications of the return spring.
[0037] To facilitate the installation of the valve body 41 on the base plate 1, the valve body 41 is provided with external threads. The external threads are provided with a first nut 51 and a second nut 52, wherein the first nut 51 is above the base plate 1 and the second nut 52 is below the base plate 1. By tightening the two nuts together, the base plate 1 is clamped between the first nut 51 and the second nut 52, thereby realizing the installation of the valve body 41 on the base plate 1.
[0038] To ensure a more stable installation of the valve body 41, a metal washer 53 is provided on the outside of the valve body 41. The metal washer 53 is located between the base plate 1 and the first nut 51. Alternatively, the metal washer 53 can also be located between the base plate 1 and the second nut 52, or both between the base plate 1 and the first nut 51 and between the base plate 1 and the second nut 52.
[0039] To enhance the sealing effect between the one-way valve and the base plate 1, a first sealing ring is provided between the one-way valve and the base plate 1. The first sealing ring is located between the first nut 51 and the base plate 1.
[0040] Similarly, a second sealing ring 62 can also be provided between the one-way valve and the base plate 1, with the second sealing ring 62 located between the second nut 52 and the base plate 1. It is readily apparent that those skilled in the art can simultaneously provide a first sealing ring and a second sealing ring 62 on the one-way valve. Taking this embodiment as an example, the second sealing ring 62 is only provided between the one-way valve and the base plate 1.
[0041] like Figure 2 As shown, in this embodiment, the air pressure regulating component 4 is positioned in the middle of the side of the positioning part 3. This design maximizes the use of the space on the side of the positioning part 3 for installing the air pressure regulating component 4, while also largely not affecting the positioning of the tightening tool on the positioning part 3, thus not affecting operation.
[0042] like Figure 2 or Figure 3 As shown, the positioning part 3 in this embodiment specifically includes an intermediate connecting plate 30 and raised lugs 31 located on both sides of the intermediate connecting plate 30. Each raised lug 31 includes an outer connecting piece 311 connected to the intermediate connecting plate 30 and an inner connecting piece 312 extending downwards. The intermediate connecting plate 30 has perforated holes 34 on both sides. The inner connecting piece 312 extends downwards and passes through the perforated holes 34 before finally being fixedly connected to the base plate 1. This structure of the positioning part 3 is equivalent to both the intermediate connecting plate 30 and the raised lugs 31 having corresponding connection points to the base plate 1, which improves the stability of the connection between the positioning part 3 and the base plate 1.
[0043] like Figure 3As shown, in this embodiment, the height of the raised lug 31 is lower than the height of the outer wall of the stopper. This design aims to better protect the raised lug 31 from external forces, especially from lateral forces, thus reducing the likelihood of the stopper being loosened.
[0044] Example 2
[0045] To enhance the protection of the one-way valve, this embodiment, based on Embodiment 1, includes a removable protective sleeve covering the portion of the one-way valve protruding from the barrel lid. This protective sleeve serves two purposes: first, it protects the one-way valve from damage, especially when no oil or liquid is being injected, keeping the valve clean and reducing the risk of dust or oil entering and causing blockages; second, when the pressure inside the barrel returns to normal, the protective sleeve can be reattached to the one-way valve, completely sealing it and isolating the inside and outside of the barrel.
[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.
Claims
1. A pressure-adjusting plug for preventing deformation of a steel drum, used for installation on the inlet / outlet of a steel drum lid, the plug comprising a base plate, an outer peripheral sidewall surrounding the outer circumference of the base plate, a threaded connection portion on the outer peripheral sidewall for connecting with the inlet / outlet of the steel drum lid, a top sealing ring matching the inlet / outlet on the outer peripheral sidewall, and a positioning portion on the base plate for matching a tightening tool, characterized in that... The bottom plate is equipped with a pressure regulating component for connecting the inside of the steel drum with the outside. The pressure regulating component is a one-way flow valve, which allows air from outside the drum to flow into the drum in one direction. The opening pressure of the one-way flow valve is configured to be 0.1 to 0.13 MPa.
2. The pressure self-adjusting barrel stopper for preventing deformation of a steel barrel as described in claim 1, characterized in that: The one-way flow valve includes a valve body, a hollow valve cavity inside the valve body, a valve stem and a return spring for resetting the valve stem inside the valve cavity.
3. The pressure self-adjusting barrel stopper for preventing steel barrel deformation as described in claim 2, characterized in that: The valve body is provided with external threads, and a first nut and a second nut are provided on the external threads. The base plate is clamped between the first nut and the second nut.
4. The pressure self-adjusting barrel stopper for preventing steel barrel deformation as described in claim 3, characterized in that: The valve body is provided with a metal washer on the outside, and the metal washer is located between the base plate and the first nut; and / or, the metal washer is located between the base plate and the second nut.
5. The pressure self-adjusting barrel stopper for preventing steel barrel deformation as described in claim 3, characterized in that: A first sealing ring is provided between the one-way flow valve and the base plate, and the first sealing ring is located between the first nut and the base plate; and / or, a second sealing ring is provided between the one-way flow valve and the base plate, and the second sealing ring is located between the second nut and the base plate.
6. The pressure self-adjusting barrel stopper for preventing steel barrel deformation as described in claim 1, characterized in that: The portion of the one-way flow valve protruding from the barrel lid is fitted with a removable protective sleeve.
7. A pressure-adjusting stopper for preventing steel drum deformation as described in any one of claims 1 to 6, characterized in that: The air pressure regulating component is located in the middle position on the side of the positioning part.
8. A pressure self-regulating barrel stopper for preventing deformation of a steel barrel as described in any one of claims 1 to 6, characterized in that: The positioning part includes an intermediate connecting plate and raised lugs located on both sides of the intermediate connecting plate.
9. A pressure self-adjusting barrel stopper for preventing deformation of a steel barrel as described in claim 8, characterized in that: The raised lug includes an outer connecting piece connected to the middle connecting plate and an inner connecting piece extending downward. The middle connecting plate has hollow holes on both sides. The inner connecting piece extends downward and passes through the hollow holes before finally being fixedly connected to the base plate.
10. A pressure self-adjusting barrel stopper for preventing deformation of a steel barrel as described in claim 8, characterized in that: The height of the raised lug is lower than the height of the outer wall of the barrel stopper.