Composite plastic bucket

By introducing a floating sealing cap and an elastic telescopic ring structure into the plastic drum, combined with a glass fiber reinforced layer and a PTFE inner layer, the shaking and sealing problems of traditional plastic drums when storing liquids are solved, achieving more stable material transportation and sealing effect.

CN224131772UActive Publication Date: 2026-04-17TIANJIN LUYUAN PLASTIC PROD CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN LUYUAN PLASTIC PROD CO LTD
Filing Date
2025-06-07
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Traditional plastic buckets are prone to shaking when storing liquids, causing spills, and they also have poor sealing properties, making them prone to leakage.

Method used

A composite plastic bucket was designed, featuring a floating sealing cap and an elastic telescopic ring structure, combined with a glass fiber reinforcement layer and a PTFE inner layer, and equipped with an anti-UV coating to ensure sealing and stability.

Benefits of technology

It effectively reduces material movement, improves sealing, prevents liquid leakage, and extends service life.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224131772U_ABST
    Figure CN224131772U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of plastic buckets, in particular to a composite plastic bucket. The composite plastic barrel comprises a barrel body, an integrally-formed inner edge ring is arranged at a barrel opening in the top of the barrel body, and a floating sealing cover connected in a sliding mode is installed in the barrel body. An elastic telescopic ring sleeve is fixedly installed on the upper cover face of the floating sealing cover, and an upper sleeve opening of the elastic telescopic ring sleeve is fixedly connected with the inner top wall of the inner edge ring. According to the composite plastic barrel, after materials enter the barrel body, the materials push the floating sealing cover to float upwards, at the moment, the elastic telescopic ring sleeve is awakened to be compressed by the floating sealing cover, the threaded sealing cover is installed after filling is completed, and therefore the floating sealing cover is attached to the liquid level in the barrel body all the time; therefore, when the barrel body is carried, due to the fact that the liquid level in the barrel body is pressed by the floating sealing cover, shaking of materials is effectively reduced.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of plastic bucket technology, and in particular to a composite plastic bucket. Background Technology

[0002] Plastic buckets are mostly made of polyethylene, polypropylene and other plastics through blow molding and injection molding. They are used as outer packaging for liquid and solid products in industries such as chemicals, pesticides, pharmaceuticals, food, hardware, electronics and electromechanical. In the field of plastic bucket technology, traditional plastic buckets are prone to sloshing when storing liquid materials. This can not only cause the materials to spill during transportation, but also affect the stability of the materials. In addition, the sealing components inside traditional plastic buckets have poor sealing performance with the bucket body, which can easily lead to leakage problems.

[0003] Therefore, it is necessary to provide a new composite plastic bucket to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a composite plastic bucket.

[0005] The composite plastic bucket provided by this utility model includes a bucket body, an integrally formed inner rim ring is provided at the bucket opening at the top of the bucket body, and a slidingly connected floating sealing cover is installed inside the bucket body.

[0006] An elastic telescopic ring is fixedly installed on the upper cover surface of the floating sealing cover, and the upper opening of the elastic telescopic ring is fixedly connected to the inner top wall of the inner edge ring.

[0007] Preferably, the outer ring wall of the floating sealing cap is fixedly fitted with a plurality of coaxially arranged elastic rubber tubes, and the elastic rubber tubes are tightly abutted against the inner wall of the barrel.

[0008] Preferably, the floating sealing cover has a threaded material port, and a threaded sealing cover is installed on the threaded material port.

[0009] Preferably, the barrel body includes a glass fiber reinforcement layer, a PTFE inner layer, and an anti-UV coating. The glass fiber reinforcement layer and the PTFE inner layer are fixedly connected by hot pressing, and the anti-UV coating is applied to the outer surface of the glass fiber reinforcement layer by high-pressure spraying.

[0010] Preferably, a rubber gasket is fitted at the bottom of the barrel.

[0011] Preferably, the lower cover surface of the floating sealing cap is covered with a fluorocarbon polymer film.

[0012] Compared with related technologies, the composite plastic bucket provided by this utility model has the following beneficial effects:

[0013] After the material enters the barrel, it pushes the floating sealing cap to float. At this time, the elastic telescopic ring is compressed by the floating sealing cap. After filling is completed, the threaded sealing cap is installed. Therefore, the floating sealing cap is always in contact with the liquid surface in the barrel. Thus, when the barrel is moved, the shaking of the material is effectively reduced because the liquid surface in the barrel is pressed by the floating sealing cap. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the composite plastic bucket provided by this utility model;

[0015] Figure 2 for Figure 1 A cross-sectional view of the barrel shown.

[0016] Figure 3 for Figure 2 The diagram shows the structure of the barrel.

[0017] The following are the labels in the diagram: 1. Barrel body; 11. Inner rim ring; 2. Floating sealing cap; 2a. Threaded feed port; 21. Threaded sealing cap; 3. Elastic telescopic sleeve; 4. Elastic rubber tube; 5. Rubber gasket; 101. Glass fiber reinforced layer; 102. PTFE inner layer; 103. Anti-UV coating. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0020] Please see Figures 1 to 3 The present invention provides a composite plastic bucket, which includes a bucket body 1, a floating sealing cap 2, and an elastic telescopic ring sleeve 3.

[0021] In the embodiments of this utility model, please refer to Figure 1 and Figure 2 The barrel body 1 has an integrally formed inner rim ring 11 at the top opening, and a slidingly connected floating sealing cover 2 is installed inside the barrel body 1. An elastic telescopic ring 3 is fixedly installed on the upper cover surface of the floating sealing cover 2, and the upper opening of the elastic telescopic ring 3 is fixedly connected to the inner top wall of the inner rim ring 11. A threaded material port 2a is opened on the floating sealing cover 2, and a threaded sealing cover 21 is installed on the threaded material port 2a.

[0022] It should be noted that when the barrel 1 is not storing liquid material, the floating sealing cap 2 slides down the inner wall of the barrel 1 under the action of gravity until it is close to the bottom of the barrel 1. When material needs to be loaded into the barrel 1, after opening the threaded sealing cap 21, the quick connector of the flexible filling tube is connected to the threaded material port 2a, and then the barrel 1 is filled. When the material enters the barrel 1, the material pushes the floating sealing cap 2 to float up. At this time, the elastic telescopic ring 3 is compressed by the floating sealing cap 2. After the filling is completed, the threaded sealing cap 21 is installed. Therefore, the floating sealing cap 2 is always in contact with the liquid surface in the barrel 1. Therefore, when the barrel 1 is moved, the liquid surface in the barrel 1 is pressed by the floating sealing cap 2, which effectively reduces the shaking of the material.

[0023] Since the upper opening of the elastic telescopic sleeve 3 is fixedly connected to the upper cover surface of the floating sealing cover 2, and the lower opening of the elastic telescopic sleeve 3 is fixedly connected to the inner top wall of the inner edge ring 11, it also has a sealing effect on the floating sealing cover 2 and the barrel 1. This ensures that some of the liquid leaking from the periphery of the floating sealing cover 2 enters the cavity between the elastic telescopic sleeve 3 and the barrel 1, thus preventing the liquid from leaking out of the barrel 1.

[0024] In this embodiment, the bottom of the barrel 1 is designed as a contracting cavity to prevent the floating sealing cap 2 from directly contacting the inner bottom wall of the barrel 1, thus preventing the material from being poured into the barrel 1 from the threaded inlet 2a.

[0025] Furthermore, the outer ring wall of the floating sealing cover 2 is fixedly fitted with a plurality of coaxially arranged elastic rubber tubes 4, and the elastic rubber tubes 4 are tightly abutted against the inner wall of the barrel 1, thereby improving the sealing performance between the floating sealing cover 2 and the barrel 1.

[0026] Furthermore, the lower cover surface of the floating sealing cover 2 is covered with a fluorocarbon polymer film, which can reduce the material adhering to the inner cover surface of the floating sealing cover 2, making it easier to clean and maintain.

[0027] The bottom of the barrel 1 is fitted with a rubber gasket 5, which reduces the impact force when the barrel 1 comes into contact with the ground.

[0028] In the embodiments of this utility model, please refer to Figure 2 and Figure 3 The barrel body 1 includes a glass fiber reinforcement layer 101, a PTFE inner layer 102, and an anti-UV coating 103. The glass fiber reinforcement layer 101 and the PTFE inner layer 102 are fixedly connected by hot pressing, and the anti-UV coating 103 is applied to the outer surface of the glass fiber reinforcement layer 101 by high-pressure spraying. This structure gives the barrel body 1 high strength, good corrosion resistance and UV resistance, thus extending the service life of the barrel body 1.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A composite plastic bucket, characterized by, Includes a barrel body (1), with an integrally formed inner edge ring (11) at the top of the barrel body (1), and a slidingly connected floating sealing cover (2) installed inside the barrel body (1). The upper cover of the floating sealing cover (2) is fixedly installed with an elastic telescopic ring (3), and the upper opening of the elastic telescopic ring (3) is fixedly connected to the inner top wall of the inner edge ring (11).

2. The composite plastic bucket of claim 1, wherein, The outer ring wall of the floating sealing cover (2) is fixedly fitted with a plurality of coaxially arranged elastic rubber tubes (4), and the elastic rubber tubes (4) are tightly abutted against the inner wall of the barrel (1).

3. The composite plastic bucket according to claim 2, characterized in that, The floating sealing cover (2) has a threaded material port (2a), and a threaded sealing cover (21) is installed on the threaded material port (2a).

4. The composite plastic bucket of claim 1, wherein, The barrel body (1) includes a glass fiber reinforced layer (101), a PTFE inner layer (102), and an anti-UV coating (103). The glass fiber reinforced layer (101) and the PTFE inner layer (102) are fixedly connected by hot pressing, and the anti-UV coating (103) is applied to the outer surface of the glass fiber reinforced layer (101) by high-pressure spraying.

5. The composite plastic bucket according to claim 1, characterized in that, A rubber gasket (5) is fitted to the bottom of the barrel (1).

6. The composite plastic bucket of claim 1, wherein, The lower cover of the floating sealing cover (2) is covered with a fluorocarbon polymer film.