Plastic bucket with high sealing performance

Abstract

The utility model discloses a plastic bucket with strong sealing performance, which relates to the technical field of plastic buckets and has the advantages of high bucket body strength, high bucket cover and bucket body connection strength and good sealing performance. Comprising a barrel body and a barrel cover, the bottom of the barrel body is provided with a plurality of annular ribs, the annular ribs are arranged at the bottom of the barrel body in a radial mode, the barrel body and the barrel cover are provided with a first sealing structure and a second sealing structure which are matched with each other, and the barrel cover is further provided with a rotatable locking structure. And a limiting block corresponding to the locking structure is arranged on the barrel body.

Description

Technical Field

[0001] This utility model relates to the field of plastic bucket technology, specifically a plastic bucket with strong sealing performance. Background Technology

[0002] Plastic drums are widely used for the storage and transportation of various liquids. They offer excellent packaging properties for special hazardous materials, being unbreakable, rust-free, and lightweight. They also exhibit excellent oil and strong corrosion resistance, making them ideal for packaging hazardous materials requiring insulation, moisture protection, pressure resistance, and corrosion resistance. Plastic drums are typically made from polyethylene, polypropylene, polyester, and other plastics through blow molding, injection molding, vacuum forming, and rotational molding. They are commonly used for containing liquids and solids in the chemical, pesticide, pharmaceutical, food, hardware, electronics, and electromechanical industries. However, existing plastic drums have poor sealing properties, especially when containing liquids, making leakage a common problem, leading to material waste and inconvenience.

[0003] For example, Chinese patent CN214494066U discloses a sealed plastic bucket, including a bucket body. A sealing ring and a first convex ring are sequentially arranged along the height of the outer side of the bucket body's open end from top to bottom. The sealing ring is arc-shaped from the upper middle part of the side away from the bucket body's open end to the open end of the bucket body, and the arc surface is a convex arc. A positioning ring is provided on the bottom end face of the sealing ring. A snap-fit ​​groove for engaging with the first convex ring is provided on the inner side of the bucket lid's open end. A sealing ring groove for engaging with the sealing ring is provided on the bottom inner side of the bucket lid. When the bucket lid and bucket body are closed, the inner surface of the sealing ring groove fits against the outer surface of the sealing ring. This design has high sealing performance, preventing liquid leakage and theft prevention when filled into the bucket.

[0004] When the lid is placed on the barrel, the locking ring groove on the inside of the lid engages with the first protruding ring on the barrel, and the sealing ring groove at the bottom of the lid engages with the sealing ring at the opening of the barrel. The inner surface of the sealing ring groove fits against the outer surface of the sealing ring to achieve a seal. However, the sealing quality is poor, and the connection strength between the lid and the barrel is reduced after the easy-tear strip is damaged, resulting in poor sealing performance. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology and provide a plastic bucket with strong sealing performance, high bucket body strength, high connection strength between the bucket lid and the bucket body, and good sealing performance.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a plastic bucket with strong sealing performance, including a bucket body and a bucket lid. The bottom of the bucket body is provided with multiple annular ribs, which are arranged radially on the bottom of the bucket body. The bucket body and the bucket lid are provided with a first sealing structure and a second sealing structure that cooperate with each other. The bucket lid is also provided with a rotatable locking structure. The bucket body is provided with a limiting block corresponding to the locking structure.

[0007] Furthermore, the first sealing structure includes a spiral reinforcing rib disposed on the outer wall of the barrel opening at the upper end of the barrel body, and a corresponding spiral groove is provided on the inner side of the barrel lid.

[0008] Furthermore, the first sealing structure also includes a sealing ramp at the upper end of the barrel opening, and the inner side of the barrel cover is provided with a sealing step corresponding to the sealing ramp.

[0009] Furthermore, the first sealing structure also includes an annular sealing ring disposed within the barrel lid.

[0010] Furthermore, the second sealing structure includes a cylindrical inner plug on the barrel lid, the outer wall of the cylindrical inner plug being provided with an annular groove, and an O-ring being embedded in the annular groove.

[0011] Furthermore, the locking structure includes a handle movably disposed on the bucket lid, and limiting plates are fixedly provided on both sides of the handle.

[0012] Furthermore, a connecting sleeve is fixedly provided on the bucket lid. The connecting sleeve is divided into two sections. The diameter of the lower section of the connecting sleeve is larger than the diameter of the upper section of the connecting sleeve. A spring and a movable plate are provided inside the lower section of the connecting sleeve. One end of the spring is fixedly provided on the bucket lid, and both ends of the movable plate abut against the spring and the bottom wall of the upper section of the connecting sleeve, respectively.

[0013] Furthermore, a movable rod is fixedly connected to the handle, and the other end of the movable rod passes through the connecting sleeve and is fixedly connected to the movable plate.

[0014] Furthermore, the center of the bucket lid is provided with a mounting groove for installing the spring, and one end of the spring is fixedly disposed in the mounting groove on the bucket lid.

[0015] By adopting the above technical solution, this utility model has the following beneficial effects:

[0016] 1. By setting the first sealing structure, the cooperation between the spiral reinforcing rib on the outside of the barrel opening and the spiral groove on the inside of the barrel lid can improve the connection strength and sealing performance between the barrel lid and the barrel body. The sealing step on the inside of the barrel lid abuts against the sealing surface at the top of the barrel opening, and the sealing ring is squeezed against the inner wall of the barrel opening to form a radial seal, thereby achieving a further sealing effect.

[0017] 2. By setting a second sealing structure, the cylindrical inner plug on the barrel lid is inserted into the barrel opening. The outer wall of the cylindrical inner plug is provided with an annular groove, and an O-ring is embedded in the annular groove. When the barrel lid is tightened, the O-ring fits tightly with the inner wall of the barrel opening, forming a further seal.

[0018] 3. A locking mechanism is installed to further tighten the lid and body of the bucket, improving the connection strength and sealing effect;

[0019] 4. The bottom of the barrel is equipped with multiple ring ribs, which are arranged radially at the bottom of the barrel to increase the strength of the barrel and prevent the bottom of the barrel from deforming when too much material is contained. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the plastic bucket with strong sealing performance according to this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0022] Figure 3 for Figure 1 Enlarged view of part B in the middle

[0023] Figure 4 for Figure 1 Enlarged view of section C in the image.

[0024] Reference numerals: 1. Barrel body; 2. Barrel lid; 3. First sealing structure; 4. Second sealing structure;

[0025] 5. Locking structure; 6. Limiting block; 11. Annular flange; 12. Annular rib; 13. Annular step;

[0026] 14. Limiting rod; 21. Connecting sleeve; 22. Mounting groove; 31. Spiral reinforcing rib; 32. Spiral groove; 33. Sealing bevel; 34. Sealing step;

[0027] 35. Annular sealing ring; 41. Cylindrical inner plug; 42. Annular groove; 43. O-ring seal; 51. Handle;

[0028] 52. Limiting plate; 53. Spring; 54. Movable plate; 55. Movable rod. Detailed Implementation

[0029] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0030] like Figure 1-4 As shown, in this embodiment, a plastic bucket with strong sealing performance is provided, including a bucket body 1 and a bucket lid 2. The bottom of the bucket body 1 is provided with an annular flange 11, so that the bottom of the bucket body 1 has an inward structure. The bottom of the bucket body 1 is provided with multiple annular ribs 12, which are arranged radially at the bottom of the bucket body 1. The bucket body 1 and the bucket lid 2 are provided with a first sealing structure 3 and a second sealing structure 4 that cooperate with each other. The bucket lid 2 is also provided with a rotatable locking structure 5. The bucket body 1 is provided with a limiting block 6 corresponding to the locking structure 5.

[0031] In this embodiment, the first sealing structure 3 includes a spiral reinforcing rib 31 on the outer wall of the barrel opening at the upper end of the barrel body 1, a corresponding spiral groove 32 on the inner side of the barrel cover 2, a sealing inclined surface 33 at the upper end of the barrel opening, a sealing step 34 corresponding to the sealing inclined surface 33 on the inner side of the barrel cover 2, and an annular sealing ring 35 inside the barrel cover 2. When the barrel cover 2 is tightened, the annular sealing ring 35 is squeezed against the inner wall of the barrel body 1 to form a radial seal.

[0032] The combination of the spiral reinforcing rib 31 on the outside of the barrel opening and the spiral groove 32 on the inside of the barrel lid 2 can improve the connection strength and sealing performance between the barrel lid 2 and the barrel body 1. At the same time, when the barrel lid 2 is tightened, the sealing step 34 on the inside of the barrel lid 2 abuts against the sealing surface at the top of the barrel opening, achieving a further sealing effect.

[0033] In this embodiment, the second sealing structure 4 includes a cylindrical inner plug 41 on the lid 2. The cylindrical inner plug 41 extends from the center of the lid 2 and is inserted into the inside of the bucket opening. The outer wall of the cylindrical inner plug 41 is provided with an annular groove 42. An O-ring 43 is embedded in the annular groove 42. When the lid 2 is tightened, the O-ring 43 fits tightly with the inner wall of the bucket opening, forming a further seal.

[0034] In this embodiment, the barrel body 1 is provided with an annular step 13, and two symmetrical limiting rods 14 are fixedly provided on the annular step. The limiting block 6 is fixedly installed on the limiting rods 14.

[0035] In this embodiment, the locking structure 5 includes a handle 51 movably mounted on the lid 2. The bottom plate of the handle 51 has a rectangular cross-section. Limiting plates 52 are fixedly mounted on both sides of the handle 51. A connecting sleeve 21 is fixedly mounted on the lid 2. The connecting sleeve 21 is divided into two sections. The diameter of the lower section of the connecting sleeve 21 is larger than the diameter of the upper section of the connecting sleeve 21. A spring 53 and a movable plate 54 are provided in the lower section of the connecting sleeve 21. A mounting groove 22 for mounting the spring 53 is opened in the center of the lid 2. One end of the spring 53 is fixedly mounted in the mounting groove 22 on the lid 2. The two ends of the movable plate 54 are... Do not press the handle 51 against the bottom wall of the upper section of the connecting sleeve 21. A movable rod 55 is fixedly connected to the handle 51. The other end of the movable rod 55 passes through the connecting sleeve 21 and is fixedly connected to the movable plate 54. After the lid 2 is tightened, press the handle 51 down. The spring 53 is compressed by force. Rotate the handle 51 so that the limiting plate 52 on the handle 51 moves to below the limiting block 6 on the barrel body 1. Release the handle 51. The spring 53 loses its force and automatically resets. The limiting plate 52 abuts against the limiting block 6, completing the further locking of the lid 2 and the barrel body 1, improving the connection strength and sealing effect.

[0036] The working principle and advantages of this utility model are as follows: When it is necessary to seal the material inside the barrel, place the barrel lid 2 on the barrel body 1 and tighten the barrel lid 2. When tightening, the cooperation between the spiral reinforcing rib 31 on the outer side of the barrel opening and the spiral groove 32 on the inner side of the barrel lid 2 can improve the connection strength and sealing performance between the barrel lid 2 and the barrel body 1. The sealing step 34 on the inner side of the barrel lid 2 abuts against the sealing surface at the upper end of the barrel opening. The sealing ring is squeezed against the inner wall of the barrel opening to form a radial seal, achieving a further sealing effect. At the same time, the columnar inner plug 41 on the barrel lid 2 is inserted into the barrel opening. The outer wall of the columnar inner plug 41 is provided with an annular groove 42. An O-ring 43 is embedded in the annular groove 42. When tightening the barrel lid 2, the O-ring 43 fits tightly against the inner wall of the barrel opening, forming a further seal. Then, press down on the handle 51 to release the spring. When spring 53 is compressed, rotating handle 51 moves the limiting plate 52 on handle 51 to below the limiting block 6 on barrel 1. Releasing handle 51 causes spring 53 to automatically return to its original position, allowing the limiting plate 52 to abut against the limiting block 6, further locking the lid 2 to barrel 1 and improving connection strength and sealing effect. To open lid 2, press handle 51 down, compress spring 53, rotate handle 51 to disengage the limiting plate 52 on handle 51 from the limiting block 6 on barrel 1, release handle 51, and unscrew lid 2. Barrel 1 has multiple annular ribs 12 at the bottom, arranged radially to increase the strength of barrel 1 and prevent deformation of the bottom when overfilled.

[0037] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plastic bucket with strong sealing performance, characterized in that: The container includes a barrel body (1) and a barrel lid (2). The bottom of the barrel body (1) is provided with multiple annular ribs (12), which are arranged radially at the bottom of the barrel body (1). The barrel body (1) and the barrel lid (2) are provided with a first sealing structure (3) and a second sealing structure (4) that cooperate with each other. The barrel lid (2) is also provided with a rotatable locking structure (5). The barrel body (1) is provided with a limiting block (6) corresponding to the locking structure (5).

2. The plastic bucket with strong sealing performance according to claim 1, characterized in that: The first sealing structure (3) includes a spiral reinforcing rib (31) on the outer wall of the barrel opening at the upper end of the barrel body (1), and a corresponding spiral groove (32) is provided on the inner side of the barrel cover (2).

3. A plastic bucket with strong sealing performance according to claim 2, characterized in that: The first sealing structure (3) further includes a sealing slope (33) provided at the upper end of the barrel opening, and a sealing step (34) corresponding to the sealing slope (33) is provided on the inner side of the barrel cover (2).

4. A plastic bucket with strong sealing performance according to claim 2, characterized in that: The first sealing structure (3) also includes an annular sealing ring (35) disposed inside the barrel lid (2).

5. A plastic bucket with strong sealing performance according to claim 1, characterized in that: The second sealing structure (4) includes a columnar inner plug (41) on the barrel lid (2), and an annular groove (42) is provided on the outer wall of the columnar inner plug (41), and an O-ring (43) is embedded in the annular groove (42).

6. A plastic bucket with strong sealing performance according to claim 1, characterized in that: The locking structure (5) includes a handle (51) movably disposed on the bucket lid (2), and limiting plates (52) are fixedly provided on both sides of the handle (51).

7. A plastic bucket with strong sealing performance according to claim 6, characterized in that: A connecting sleeve (21) is fixedly provided on the bucket lid (2). The connecting sleeve (21) is divided into two sections. The diameter of the lower section of the connecting sleeve (21) is larger than the diameter of the upper section of the connecting sleeve (21). A spring (53) and a movable plate (54) are provided in the lower section of the connecting sleeve (21). One end of the spring (53) is fixedly provided on the bucket lid (2). The two ends of the movable plate (54) respectively abut against the bottom wall of the upper section of the connecting sleeve (21).

8. A plastic bucket with strong sealing performance according to claim 7, characterized in that: A movable rod (55) is fixedly connected to the handle (51), and the other end of the movable rod (55) passes through the connecting sleeve (21) and is fixedly connected to the movable plate (54).

9. A plastic bucket with strong sealing performance according to claim 7, characterized in that: The center of the bucket lid (2) is provided with a mounting groove (22) for installing the spring (53), and one end of the spring (53) is fixedly installed in the mounting groove (22) on the bucket lid (2).

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