A cleaning brush

Abstract

This utility model discloses a cleaning brush, comprising: a handle; a central shaft, one end of which is fixedly connected to the handle; a soft foam plastic layer, which is sleeved on the outside of the central shaft; a water-soluble film layer one, which wraps around the outer surface of the soft foam plastic layer and keeps the soft foam plastic layer in a compressed state; and a solvent containing unit, which is disposed inside the soft foam plastic layer; the solvent containing unit includes a water-soluble film layer two and an organic solvent layer encapsulated therein. During cleaning operations, the outermost water-soluble film layer gradually dissolves upon contact with water. After dissolving, the soft foam plastic layer loses external pressure and gradually expands from a compressed state to achieve all-round cleaning of the inside of the pipe. As water seeps in, the water-soluble film layer two, which encapsulates the organic solvent, dissolves upon contact with water, and the organic solvent penetrates into the melamine foam layer. The melamine foam layer, which is permeated by the water-soluble solvent, enhances the cleaning effect when wiping oil stains.

Description

Technical Field

[0001] This utility model relates to the field of cleaning tools, specifically to a cleaning brush, and more particularly to a cleaning brush for cleaning oil stains on the inner wall of small-diameter pipes. Background Technology

[0002] Soft melamine foam, also known as melamine foam, is a soft foam plastic with countless micropores, made from melamine resin as the main raw material and cured by microwave foaming and cross-linking. It is often cut into blocks and used as a cleaning product to clean items.

[0003] However, when using melamine foam blocks to clean the inside of pipes, the soft foam struggles to penetrate the narrow confines of the pipe. Furthermore, when encountering stubborn oil stains requiring strong cleaning, melamine foam blocks are also ineffective. For better oil removal, melamine foam needs to be used in conjunction with organic solvents such as ethanol to achieve the desired effect. When using it with organic solvents, the solvent must first be sprayed onto the oil stain before wiping, making it inconvenient. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a cleaning brush that aims to overcome at least one related technical problem existing in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a cleaning brush, comprising: a handle; a central shaft; a soft foam plastic layer; a water-soluble film layer; and a solvent-containing unit. One end of the central shaft is fixedly connected to the handle; the soft foam plastic layer is sleeved outside the central shaft; the water-soluble film layer wraps around the outer surface of the soft foam plastic layer and keeps the soft foam plastic layer in a compressed state; and the solvent-containing unit is disposed inside the soft foam plastic layer; the solvent-containing unit includes a water-soluble film layer and an organic solvent layer encapsulated therein.

[0006] In one optional embodiment, the first water-soluble film layer is configured to release the flexible foam plastic layer upon dissolving in water, causing the flexible foam plastic layer to expand from a compressed state and fill the inner wall of the pipe; the second water-soluble film layer is configured to release the organic solvent layer upon dissolving in water to wet the flexible foam plastic layer. The first and second water-soluble film layers are made of water-soluble materials, solving the problem of first introducing a small volume into a small-diameter pipe and then expanding to adhere to the inner wall of the pipe. Simultaneously, it also solves the problem of how to spray organic solvents during cleaning.

[0007] To leverage the high adsorption capacity, microporous structure, and physical detergency of melamine foam, in one optional embodiment, the flexible foam layer is made of melamine foam material and used as a cleaning layer to improve degreasing efficiency and durability. Melamine foam effectively captures and locks in oil particles, while also working synergistically with organic solvents to enhance cleaning performance.

[0008] The thickness of the flexible foam plastic layer in its natural state is 5mm-100mm, and the thickness after compression is 2.5mm-80mm.

[0009] To ensure rapid dissolution of the film layers upon contact with water and the release of foam and solvent, in one optional embodiment, the first water-soluble film layer and the second water-soluble film layer are independently selected from one of polyvinyl alcohol water-soluble film and water-soluble polyimide film. These materials have excellent water solubility and environmental friendliness, and can achieve a controllable dissolution rate.

[0010] In order to ensure that the film layer has sufficient mechanical strength to encapsulate the foam and solvent while achieving rapid dissolution upon contact with water, in an optional embodiment, the thickness of the first water-soluble film layer is 0.03mm-0.07mm, and the thickness of the second water-soluble film layer is 0.01mm-0.03mm.

[0011] In order to effectively dissolve oil stains on the pipe wall and enhance the cleaning ability, in an optional embodiment, the organic solvent layer contains at least one of ethanol, propanol, acetone or tetrahydrofuran.

[0012] To ensure sufficient organic solvent to wet the entire foam layer, in one optional embodiment, the thickness of the organic solvent layer is 5mm-100mm. The filler thickness is set within this range. Too thin a layer may result in insufficient solvent, while too thick a layer may affect the brush's flexibility.

[0013] To provide a comfortable grip and ease of operation, in one alternative embodiment, the handle is made of wood or plastic and is 100mm-200mm in length and 5mm-50mm in diameter. These materials are lightweight, durable, and inexpensive; the size ensures the handle is comfortable for the hand to grip and can apply sufficient force.

[0014] To provide sufficient structural support, in one optional embodiment, the diameter of the central shaft is 3mm-10mm; at the same time, to avoid the shaft being too thick and affecting the flexibility of the brush body, or too thin and causing easy bending, the shaft diameter is set within this range.

[0015] To accommodate the cleaning needs of small-diameter pipes of varying lengths, in one optional embodiment, the overall length of the cleaning brush is 100mm-10m. Setting the overall length within this range ensures that the brush can be used on both short and long pipes, improving versatility. The length can be customized according to specific application scenarios; for example, industrial long pipes can be set to a length exceeding 10m, while household short pipes can be set to a length less than 100mm.

[0016] To ensure that the organic solvent is released uniformly and efficiently along the cleaning brush axis, in one optional embodiment, the solvent-containing unit is a tubular structure formed by the water-soluble film layer being adhered to the inner wall of the flexible foam layer.

[0017] The beneficial effects that a cleaning brush disclosed in this application may bring include, but are not limited to: This utility model has a novel design, simple structure, and is flexible and convenient to use. It can effectively remove oil stains from the inside of pipes with small inner diameters and has a good cleaning effect. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of the present invention; Figure 2 For this Figure 1 Side view.

[0019] Reference numerals: 1-Handle, 2-Water-soluble film layer one, 3-Soft foam plastic layer, 4-Water-soluble film layer two, 5-Organic solvent layer, 6-Central axis. Detailed Implementation

[0020] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] like Figure 1-2As shown, a cleaning brush includes: a handle 1; a central shaft 6; a soft foam plastic layer 3; a water-soluble film layer 2; a solvent-containing unit; one end of the central shaft 6 is fixedly connected to the handle 1; the soft foam plastic layer 3 is sleeved on the outside of the central shaft 6; the water-soluble film layer 2 wraps around the outer surface of the soft foam plastic layer 3 and keeps the soft foam plastic layer 3 in a compressed state; and the solvent-containing unit is disposed on the inner side of the soft foam plastic layer 3; the solvent-containing unit includes a water-soluble film layer 4 and an organic solvent layer 5 encapsulated therein.

[0023] To facilitate easy insertion of the cleaning brush into small-diameter pipes and to achieve automatic release of organic solvents to enhance degreasing effects, a flexible foam layer 3 is compressed and wrapped by a water-soluble film layer 2, resulting in a smaller diameter in its dry state for easy insertion. Simultaneously, an organic solvent layer 5, encapsulated by a second water-soluble film layer 4, is placed inside the flexible foam layer 3, forming a solvent-containing unit. This design solves the problems of foam difficulty penetrating small-diameter pipes and the need for additional spraying of organic solvents in existing technologies.

[0024] It should be noted that the solvent containing unit is not limited to a single cavity structure. For example, it can be multiple independent capsules or segmented cavities, all of which can achieve the encapsulation and release of organic solvents. Different kinds of organic solvents can be selected for dispensing, especially different kinds of organic solvents that will enhance the cleaning effect after mixing.

[0025] The connection between the central shaft 6 and the handle 1 can be threaded, snap-fit, or integrally formed.

[0026] During cleaning, the water-soaked cleaning brush penetrates the entire pipe. The water-soluble film layer 2 gradually dissolves upon contact with water, and the flexible foam layer 3, freed from its confinement, expands from its compressed state, increasing in volume and fully filling the interior of the small-diameter pipe. This achieves comprehensive cleaning of the pipe's interior without the need to repeatedly find the right angle to apply force. Simultaneously, the water-soluble film layer 4 dissolves upon contact with water, releasing organic solvents from the organic solvent layer 5. These organic solvents then permeate the flexible foam layer 3, enhancing its ability to dissolve and wipe away oil stains, eliminating the need for additional solvent spraying.

[0027] In some embodiments, the water-soluble film layer 2 is configured to release the flexible foam plastic layer 3 upon dissolving in water, causing the flexible foam plastic layer 3 to expand from a compressed state and fill the inner wall of the pipe; the water-soluble film layer 4 is configured to release the organic solvent layer 5 upon dissolving in water to wet the flexible foam plastic layer 3. The water-soluble film layer 2 and the water-soluble film layer 4 are both made of water-soluble materials, solving the problem of first entering a small-diameter pipe in a small volume and then expanding to fit the inner wall of the pipe. Simultaneously, it also solves the problem of how to spray organic solvents during cleaning.

[0028] To leverage the high adsorption capacity, microporous structure, and physical detergency of melamine foam, in some embodiments, the flexible foam layer 3 is made of melamine foam material, serving as the cleaning layer to improve degreasing efficiency and durability. Melamine foam effectively captures and locks in oil particles, while also working synergistically with organic solvents to enhance cleaning performance.

[0029] The thickness of the soft foam plastic layer 3 in its natural state is 5mm-100mm, and its thickness after compression is 2.5mm-80mm. In order to balance the insertability and cleaning effect of the cleaning brush, the thickness of the soft foam plastic layer 3 is set within this range to ensure that it can smoothly enter small-diameter pipes after compression and fully fill the pipe wall after expansion, avoiding incomplete cleaning due to being too thin or difficult to insert due to being too thick.

[0030] In the compressed state, the diameter of the foam layer decreases, making it easier for the handle 1 to push and insert into the pipe; after expanding upon contact with water, the foam layer returns to its natural thickness, closely adhering to the pipe wall, achieving all-around wiping.

[0031] Of course, the flexible foam layer 3 can also be made of other materials with similar adsorption and compression resilience, such as polyurethane foam or oleophilic modified foam, but melamine foam has advantages in terms of detergency and stability.

[0032] When melamine foam expands upon contact with water, its open-pore structure allows it to fully contact the pipe wall, removing oil stains through physical friction and adsorption. At the same time, organic solvents penetrate into the foam, decomposing grease and achieving chemical cleaning.

[0033] To ensure rapid dissolution of the film layer upon contact with water and the release of foam and solvent, in some embodiments, the water-soluble film layer 2 and the water-soluble film layer 4 are independently selected from one of polyvinyl alcohol water-soluble film and water-soluble polyimide film. These materials have excellent water solubility and environmental friendliness, and can achieve a controllable dissolution rate.

[0034] When the thin film layer comes into contact with water, it gradually dissolves, thereby releasing the compression of the foam layer and the encapsulation of the organic solvent, allowing the cleaning brush to enter working condition.

[0035] To ensure sufficient mechanical strength for encapsulating the foam and solvent while achieving rapid dissolution upon contact with water, in some embodiments, the thickness of the first water-soluble film layer 2 is 0.03 mm to 0.07 mm, and the thickness of the second water-soluble film layer 4 is 0.01 mm to 0.03 mm. The thickness is set within this range. The thicker first water-soluble film layer 2 ensures compressive binding force, while the thinner second water-soluble film layer 4 accelerates solvent release.

[0036] The thickness of the film layer affects the dissolution time; thinner layers dissolve faster, allowing the organic solvent to quickly wet the foam; thicker layers provide stable encapsulation, preventing premature dissolution. The thickness can be finely adjusted according to actual needs. For example, in high-humidity environments, a slightly thicker film can be used to delay dissolution; in scenarios requiring rapid action, a thinner film can be used.

[0037] To effectively dissolve grease stains on pipe walls and enhance cleaning power, in some embodiments, the organic solvent layer 5 contains at least one of ethanol, propanol, acetone, or tetrahydrofuran. These common, volatile organic solvents are chosen because they have good solubility for greases and are compatible with melamine foam. After release, the organic solvent penetrates the foam layer, chemically breaking down grease stains and reducing their adhesion. Combined with the physical wiping action of the foam, this achieves highly efficient cleaning.

[0038] To ensure sufficient organic solvent to wet the entire foam layer, in some embodiments the thickness of the organic solvent layer 5 is 5mm-100mm. The filler thickness is set within this range. Too thin a layer may result in insufficient solvent, while too thick a layer may affect the brush's flexibility.

[0039] The thickness of the organic solvent layer 5 determines the amount of solvent released. After the film layer dissolves, the solvent diffuses, ensuring that the entire foam layer is wetted and providing continuous cleaning power.

[0040] The filling thickness can be adjusted according to the foam layer thickness and the pipe length. For example, the filling thickness can be increased for long pipes and decreased for short pipes.

[0041] To provide a comfortable grip and ease of operation, in some embodiments the handle 1 is made of wood or plastic, with a length of 100mm-200mm and a diameter of 5mm-50mm. These materials are lightweight, durable, and inexpensive; the size design ensures that the handle 1 is suitable for human hand gripping and can apply sufficient thrust.

[0042] Handle 1 serves as the operating fulcrum. By pushing or pulling handle 1, the user can move the entire cleaning brush within the tube to achieve reciprocating wiping.

[0043] To provide sufficient structural support, in some embodiments the diameter of the central shaft 6 is 3mm-10mm; at the same time, to avoid the shaft being too thick and affecting the flexibility of the brush body, or too thin and causing easy bending, the shaft diameter is set within this range.

[0044] The central axis 6 serves as the skeleton, maintaining the overall shape of the cleaning brush and ensuring that the brush body will not twist or break during insertion and wiping, while allowing a certain degree of flexibility to adapt to the bending of the tube.

[0045] The diameter of the central shaft 6 can be adjusted according to the length of the brush body and the degree of curvature of the tube. For example, for a long brush body, the diameter can be increased to enhance rigidity; for a curved tube, the diameter can be decreased to improve flexibility.

[0046] To accommodate the cleaning needs of small-diameter pipes of varying lengths, the overall length of the cleaning brush in some embodiments ranges from 100mm to 10m. Setting the overall length within this range ensures the brush can be used on both short and long pipes, improving versatility. The length can be customized according to specific application scenarios; for example, industrial long pipes can be set to a length exceeding 10m, while household short pipes can be set to a length less than 100mm.

[0047] The overall length determines the coverage area of ​​the cleaning brush. Users select the appropriate brush body according to the tube length and push the brush body through the entire tube using handle 1 to achieve one-time cleaning and reduce repeated operations.

[0048] To ensure uniform and efficient release of organic solvent along the cleaning brush axis, in some embodiments, the solvent-containing unit is a tubular structure formed by the water-soluble film layer 4 adhering to the inner wall of the flexible foam layer 3. This structure allows it to penetrate the interior of the foam layer parallel to the central axis 6, forming a continuous "solvent delivery channel." When the water-soluble film layer 4 dissolves, the organic solvent can simultaneously and rapidly penetrate radially along the entire length of the brush body into the flexible foam layer 3, avoiding cleaning dead spots caused by insufficient solvent wetting in local areas, thereby achieving a uniform and thorough cleaning effect on the entire inner wall of the tube.

[0049] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A cleaning brush, characterized in that, include: Handle (1); A central shaft (6) is fixedly connected at one end to the handle (1); A flexible foam plastic layer (3) is fitted over the central shaft (6); A water-soluble film layer (2) is wrapped around the outer surface of the soft foam plastic layer (3) and keeps the soft foam plastic layer (3) in a compressed state; And a solvent containing unit disposed inside the flexible foam plastic layer (3); the solvent containing unit includes a water-soluble film layer (4) and an organic solvent layer (5) encapsulated therein.

2. The cleaning brush according to claim 1, characterized in that, The first water-soluble film layer (2) is configured to release the soft foam plastic layer (3) after dissolving in water, causing the soft foam plastic layer (3) to expand from a compressed state and fill the inner wall of the pipe; the second water-soluble film layer (4) is configured to release the organic solvent layer (5) after dissolving in water to wet the soft foam plastic layer (3).

3. The cleaning brush according to claim 1, characterized in that, The soft foam plastic layer (3) is melamine foam material, with a thickness of 5mm-100mm in its natural state and a thickness of 2.5mm-80mm after compression.

4. The cleaning brush according to claim 1, characterized in that, The first water-soluble film layer (2) and the second water-soluble film layer (4) are independently selected from one of polyvinyl alcohol water-soluble film and water-soluble polyimide film.

5. The cleaning brush according to claim 3, characterized in that, The thickness of the first water-soluble film layer (2) is 0.03mm-0.07mm, and the thickness of the second water-soluble film layer (4) is 0.01mm-0.03mm.

6. The cleaning brush according to claim 1, characterized in that, The organic solvent layer (5) contains at least one of ethanol, propanol, acetone or tetrahydrofuran.

7. The cleaning brush according to claim 1, characterized in that, The thickness of the organic solvent layer (5) is 5mm-100mm.

8. The cleaning brush according to claim 1, characterized in that, The handle (1) is made of wood or plastic and has a length of 100mm-200mm and a diameter of 5mm-50mm.

9. The cleaning brush according to claim 1, characterized in that, The diameter of the central shaft (6) is 3mm-10mm; the overall length of the cleaning brush is 100mm-10m.

10. The cleaning brush according to any one of claims 1-9, characterized in that, The solvent-containing unit is a tubular structure, which is formed by attaching the water-soluble film layer (4) to the inner wall of the flexible foam plastic layer (3).

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