Pressure-adjustable chemical barrel

Abstract

The utility model provides a chemical barrel capable of adjusting pressure, which relates to the field of fluid chemical product packaging and comprises a barrel body and a barrel cover, the barrel cover comprises an air inlet cover, an air outlet cover and an outer cover, telescopic devices are arranged in the air inlet cover and the air outlet cover, and the telescopic device of the air inlet cover comprises a first spring, a connecting rod, a first conical plug and an air baffle. When the pressure in the barrel body is smaller than the atmospheric pressure, the first spring is compressed, air enters the barrel body, and when the air pressure in the barrel body is equal to the atmospheric pressure, the telescopic device restores; a telescopic device of the air leakage cover comprises a second spring and a second conical plug, when the pressure in the barrel body is larger than the atmospheric pressure, the second spring is compressed, air in the barrel body is exhausted, and when the air pressure in the barrel body is equal to the atmospheric pressure, the telescopic device restores. The chemical barrel has the advantages that the pressure in the barrel body can be adjusted more conveniently through the air inlet cover and the air outlet cover, and the chemical barrel is prevented from expanding or shrinking.

Description

Technical Field

[0001] This utility model relates to the field of fluid chemical product packaging, specifically to an adjustable pressure chemical drum. Background Technology

[0002] Chemical drums are containers used to hold chemical raw materials and are widely used in chemical enterprises. They are currently the ideal choice for long-distance transportation of chemical products. However, during transportation, when moving from low-altitude areas to high-altitude areas or when the temperature changes from low to high, some chemical raw materials will evaporate, changing from a liquid to a gaseous state. This causes the air pressure in the sealed environment to increase continuously, which may lead to the expansion of the drum or even an explosion. Conversely, when moving from high-altitude areas to low-altitude areas or when the temperature changes from high to low, some chemical raw materials will condense, changing from a gaseous state to a liquid state. This causes the air pressure in the sealed environment to decrease continuously, reducing the pressure inside the chemical drum and causing adverse phenomena such as drum collapse or suction, affecting the appearance of the goods or causing damage to the drum itself.

[0003] A utility model patent with publication number "CN205802092U" discloses an anti-expansion plastic chemical drum. The drum has a pressure relief hole at the top with a pressure relief valve. A pressure gauge and alarm indicator light are located at the bottom of the drum, and a control device is installed on the surface of the drum. When the pressure inside the chemical drum exceeds a warning value, the control device sounds an alarm, the alarm indicator light flashes, and the pressure relief valve opens to release pressure, bringing the pressure inside the chemical drum back to normal. However, this structure has the following problems: the pressure relief operation is cumbersome, and it cannot prevent the drum from collapsing or sucking in when the pressure inside the chemical drum is lower than atmospheric pressure. Utility Model Content

[0004] This invention addresses the aforementioned problems in the prior art by providing an adjustable pressure chemical drum. The invention features an air inlet cover and an air vent cover on the chemical drum, which balances the pressure inside the drum with atmospheric pressure, preventing the drum from expanding or collapsing.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: an adjustable pressure chemical drum includes a drum body and a drum lid. The drum lid includes an air inlet cover, an air vent cover, and an outer cover. The air inlet cover and the air vent cover are disposed on the top of the drum body. The air inlet cover and the air vent cover are used to adjust the air pressure inside the drum body to balance the atmospheric pressure. The outer cover covers the outside of the air inlet cover and the air vent cover.

[0006] Furthermore, the air intake cover is longitudinally provided with through holes, including through hole one and through hole two, which are located at the center of the air intake cover; the through holes include through hole one and through hole two located on the top wall and bottom wall of the air intake cover respectively, and the two are interconnected; a first telescopic device is provided inside the air intake cover, the first telescopic device includes spring one, connecting rod, conical plug one and baffle plate, the two ends of the connecting rod are fixedly connected to conical plug one and baffle plate, conical plug one is located inside the air intake cover, below the through hole, and the conical head of conical plug one faces through hole one, baffle plate is located on the bottom side of the air intake cover, the two ends of spring one abut against conical plug one and bottom wall of air intake cover, spring one is in a compressed state in its natural state, and under the action of spring one, conical plug one can block through hole one while baffle plate blocks through hole two.

[0007] Furthermore, the vent cover is longitudinally provided with through holes, including through holes three and four located on the top and bottom walls of the vent cover respectively, and the two are interconnected; a second telescopic device is provided inside the vent cover, the second telescopic device includes a spring two and a conical plug two, the conical plug two is located inside the vent cover with its conical head facing through hole four, and the two ends of the spring two abut against the top wall of the vent cover and the conical plug two, and the spring two is in a compressed state in its natural state.

[0008] Furthermore, the two ends of the second spring are fixedly connected to the top wall of the vent cover and the second conical plug, respectively.

[0009] Furthermore, the air intake cover and the air vent cover are equipped with sealing rings.

[0010] Furthermore, the air inlet cover and the air vent cover are respectively connected to the barrel body via threads.

[0011] The beneficial effects of this utility model are as follows: By setting an air inlet cover and an air vent cover, when the pressure inside the barrel is less than atmospheric pressure, the first spring in the air inlet cover is compressed, and external air enters the barrel through the through hole; when the pressure inside the barrel is greater than atmospheric pressure, the second spring in the air vent cover is compressed, and the gas inside the barrel is discharged through the through hole; when the pressure inside the barrel is the same as atmospheric pressure, the first and second springs return to their original state, and the first and second conical plugs block the through hole, thereby adjusting the pressure of the chemical barrel. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a top view of the air intake cover of this utility model;

[0014] Figure 3 This is a bottom view of the air intake cover of this utility model;

[0015] Figure 4This is a top view of the vent cover of this utility model;

[0016] Figure 5 This is a bottom view of the vent cap of this utility model;

[0017] Figure 6 This is a side view of the air intake cover and air vent cover of this utility model;

[0018] Figure 7 This is a top view of the outer cover of this utility model;

[0019] Figure 8 This is a schematic diagram of the structure of the air inlet cover, air vent cover and outer cover of this utility model when used together;

[0020] Figure 9 This is a structural schematic diagram of the air intake cover in its initial state.

[0021] Figure 10 This is a structural schematic diagram of the air intake cover of this utility model in the air intake state;

[0022] Figure 11 This is a schematic diagram of the vent cover of this utility model in its initial state;

[0023] Figure 12 This is a schematic diagram of the structure of the vent cover of this utility model in the venting state;

[0024] In the diagram: 1. Barrel body, 2. Air inlet cover, 3. Air vent cover, 4. Outer cover, 5. Through hole one, 6. Through hole two, 7. Spring one, 8. Conical plug one, 9. Air baffle plate, 10. Through hole three, 11. Through hole four, 12. Spring two, 13. Conical plug two, 14. Connecting rod. Detailed Implementation

[0025] The principles and features of this utility model are described below. The embodiments given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0026] like Figure 1-8 As shown, an adjustable pressure chemical drum according to this embodiment includes a drum body 1 and a drum lid. The drum lid includes an air inlet cover 2, an air vent cover 3, and an outer cover 4. The air inlet cover 2 and the air vent cover 3 are disposed on the top of the drum body 1. The air inlet cover 2 and the air vent cover 3 are used to adjust the air pressure inside the drum body 1 to balance the atmospheric pressure. The outer cover 4 covers the outside of the air inlet cover 2 and the air vent cover 3 and serves as a dust cover.

[0027] like Figure 9 and Figure 10As shown, the air inlet cover 2 is longitudinally provided with through holes, including through hole 5 and through hole 6 located on the top and bottom walls of the air inlet cover 2, respectively, and the two are interconnected; a first telescopic device is provided inside the air inlet cover 2, the first telescopic device including spring 7, connecting rod 14, conical plug 8 and baffle plate 9. The two ends of the connecting rod 14 are fixedly connected to conical plug 8 and baffle plate 9. Conical plug 8 is located inside the air inlet cover 2, below through hole 5, and the conical head of conical plug 8 faces through hole 5. Baffle plate 9 is located on the bottom side of air inlet cover 2. The two ends of spring 7 abut against conical plug 8 and bottom wall of air inlet cover 2. In its natural state, spring 7 is in a compressed state. Under the action of spring 7, conical plug 8 can block through hole 5, and at the same time, baffle plate 9 blocks through hole 6, maintaining the airtightness of the chemical drum. During the transportation of chemical drums, when the temperature drops or the drum is transported from a high-altitude area to a low-altitude area, the pressure inside the drum 1 decreases, the spring 7 is compressed, the conical plug 8 moves away from the through hole 5, and the baffle plate 9 moves away from the through hole 26. External gas enters the drum 1 through the through holes 5 and 26 to regulate the atmospheric pressure balance inside and outside the drum.

[0028] like Figure 11 and Figure 12 As shown, the vent cover 3 has a through hole arranged longitudinally. The through hole includes a third through hole 10 and a fourth through hole 11 located on the top and bottom walls of the vent cover 3, respectively, and the two are interconnected. A second telescopic device is provided inside the vent cover 3. The second telescopic device includes a second spring 12 and a second conical plug 13. The second conical plug 13 is located inside the vent cover 3 with its conical head facing the fourth through hole 11. The two ends of the second spring 12 abut against the top wall of the vent cover 3 and the second conical plug 13. In its natural state, the second spring 12 is compressed. In the compressed state, the two ends of spring 12 are fixedly connected to the top wall of the vent cover 3 and the conical plug 13, respectively. In the initial state, the conical plug 13 blocks the through hole 11 to maintain the airtightness of the chemical drum. During the transportation of the chemical drum, when the temperature rises or when it is transported from a low-altitude area to a high-altitude area, the pressure inside the drum 1 increases, spring 12 is further compressed, and the conical plug 13 leaves the through hole 11. The gas inside the drum 1 is discharged through the through hole 11 and the hole 10 to regulate the atmospheric pressure balance inside and outside the drum.

[0029] In a preferred embodiment of this utility model, a sealing ring is provided between the air inlet cover 2 and the air vent cover 3 and the barrel body 1. A sealing ring can also be provided at the contact points between the conical plug 18, the conical plug 23 and the contacting through hole, so as to improve the sealing performance between the air inlet cover 2, the air vent cover 3 and the barrel body 1, and ensure the airtightness of the chemical barrel in the non-pressure regulating state.

[0030] In a preferred embodiment of this utility model, the air cover 2 and the vent cover 3 are respectively connected to the barrel body 1 by threads, which makes disassembly convenient.

[0031] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent substitutions, and variations made within the spirit and principles of the present invention should be understood as being within the protection scope of the present invention.

Claims

1. An adjustable pressure chemical drum comprising a drum body, characterized in that, Also include the bucket cover, the bucket cover includes air inlet cover (2), air release cover (3) and outer cover (4), the air inlet cover (2) and air release cover (3) are arranged at the top of the bucket body (1), and the air inlet cover (2) and air release cover (3) are used to adjust the air pressure and atmospheric pressure balance in the bucket body (1);The outer cover (4) covers the outside of the air inlet cover (2) and air release cover (3).

2. The pressure-adjustable chemical drum according to claim 1, characterized in that, The air inlet cover (2) is longitudinally provided with a through hole, the through hole includes through hole one (5) and through hole two (6) located at the top wall and the bottom wall of the air inlet cover (2) respectively, and the two are communicated with each other;The first telescopic device is arranged in the air inlet cover (2), the first telescopic device includes spring one (7), connecting rod (14), conical plug one (8) and air baffle (9), the connecting rod (14) is fixedly connected with the conical plug one (8) and the air baffle (9) at both ends, the conical plug one (8) is located in the air inlet cover (2), the lower side of the through hole one (5), and the taper head of the conical plug one (8) faces the through hole one (5), the air baffle (9) is located at the lower side of the air inlet cover (2), the spring one (7) is abutted between the conical plug one (8) and the bottom wall of the air inlet cover (2) at both ends, the spring one (7) is in compression state in the natural state, and under the action of the spring one (7), the conical plug one (8) can block the through hole one (5) at the same time, and the air baffle (9) blocks the through hole two (6).

3. The pressure-adjustable chemical drum according to claim 1, characterized in that, The air release cover (3) is longitudinally provided with a through hole, the through hole includes through hole three (10) and through hole four (11) located at the top wall and the bottom wall of the air release cover (3) respectively, and the two are communicated with each other;The second telescopic device is arranged in the air release cover (3), the second telescopic device includes spring two (12) and conical plug two (13), the conical plug two (13) is located in the air release cover (3) and the taper head faces the through hole four (11), the spring two (12) is abutted between the top wall of the air release cover (3) and the conical plug two (13) at both ends, the spring two (12) is in compression state in the natural state.

4. The pressure-adjustable chemical drum according to claim 3, characterized in that, The spring two (12) is fixedly connected with the top wall of the air release cover (3) and the conical plug two (13) at both ends respectively.

5. The pressure-adjustable chemical drum according to claim 1, wherein, The air inlet cover (2) and the air release cover (3) are provided with sealing rings.

6. The pressure-adjustable chemical drum according to claim 1, characterized in that, The air cover (2), air release cover (3) and the bucket body (1) are connected through threads respectively.

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