CN114688355A

CN114688355A - Anti-folding negative pressure resistant water inlet and outlet pipe for kitchen and bathroom and manufacturing method thereof

Info

Publication number: CN114688355A
Application number: CN202210308963.2A
Authority: CN
Inventors: 游章森
Original assignee: Youshi Xiamen Sanitary Ware Industry Co ltd
Current assignee: Youshi Xiamen Sanitary Ware Industry Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-07-01

Abstract

The invention discloses a folding-proof negative pressure-resistant water inlet and outlet pipe for kitchens and bathrooms, which sequentially consists of a first inner pipe, a woven layer, a second inner pipe, a reinforcing layer and an outer coating. Wherein, first inner tube, weaving layer and second inner tube are through the technology integrated into one piece of moulding plastics many times. The reinforcing layer is closely attached to the outer wall of the second inner pipe and restrains the second outer pipe. The outer coating is tightly coated on the outer surface of the second outer pipe below the reinforced layer and the reinforced layer. This anti-negative pressure business turn over water pipe of rolling over for kitchen and bath also has superstrong anti negative pressure ability when having superstrong anti positive pressure ability, and the pliability is good simultaneously, appears rolling over flat when can avoiding the bending of water pipe. The anti-folding negative pressure resistant water inlet and outlet pipe for kitchens and bathrooms also has the advantages of good fitting degree, good radial consistency of the water pipe, capability of being cut at will according to the use environment and the like. The invention discloses a manufacturing method of a folding-proof negative pressure-resistant water inlet and outlet pipe for kitchens and bathrooms.

Description

Anti-folding negative pressure resistant water inlet and outlet pipe for kitchen and bathroom and manufacturing method thereof

Technical Field

The invention relates to a bathroom water inlet and outlet pipe, in particular to a folding-proof negative pressure-resistant water inlet and outlet pipe for kitchens and bathrooms and a manufacturing method thereof.

Background

The bathroom water inlet and outlet pipe is mainly used for water inlet of a toilet water tank or inlet and outlet of cold water and hot water of a bathroom device and is common bathroom hardware.

Due to the limited space in toilets and for aesthetic reasons, toilets and water heaters are often mounted very compactly, very close to the wall and to the water inlet angle valve on the wall, and even the toilet inlet and angle valve are sometimes completely hidden behind the toilet tank. Admittedly, the toilet is more concise and beautiful, but the water inlet pipe of the toilet needs to be twisted and bent twice or for many times in a narrow space behind the toilet water tank, and the water inlet pipe is easy to lose elasticity and be folded and flattened.

The water inlet pipe is installed between a toilet water tank or a water heater and a water inlet angle valve, so that the water inlet pipe is required to withstand larger water pressure at ordinary times, and high positive water pressure resistance is the most basic requirement. However, the toilet bowl may form a large negative pressure in the water inlet pipe when discharging water. The general water inlet pipe is difficult to frequently bear the action of positive water pressure and negative water pressure in two directions, the inherent elasticity and strength can be gradually lost after a long time, and the water inlet pipe can be directly propped and exploded by the positive water pressure or folded and flattened at a bending part in serious conditions.

In addition, the existing water inlet and outlet pipes of the bathroom are generally manufactured into a single pipe according to a certain length. When in use, the water pipe is difficult to be just suitable for one water pipe, and is very inconvenient.

In addition, in the bathroom industry, a double-layer water pipe formed by sleeving two rubber pipes is further provided. During production, the outer pipe is inflated with high pressure air, the inner pipe is inserted into the outer pipe, the outer pipe is deflated, and the outer pipe and the inner pipe are tightened to form the double-layer water pipe. The production mode has many disadvantages, for example, the inner part of the outer pipe has high pressure, if the pipe wall of the outer pipe has a defective wire, the outer pipe is easy to blow and explode, and the outer pipe is usually made of flexible materials with better elasticity due to the need of blowing, so that the outer pipe is softer, the outer pipe cannot be prevented from being folded and flattened, and cannot play an explosion-proof role in use, because the water pipe sometimes has instant water pressure which is larger than the high-pressure air pressure used in the production and manufacturing process. Due to the limitation of the processing mode, the double-layer water pipe can only be produced one section at a time according to a certain length, so that the efficiency is not high during production, and the double-layer water pipe is very inconvenient because the double-layer water pipe is difficult to be suitable for one water pipe when in use.

Disclosure of Invention

The invention aims to provide a folding-proof negative-pressure-resistant water inlet and outlet pipe for kitchens and bathrooms, and also aims to provide a manufacturing method of the folding-proof negative-pressure-resistant water inlet and outlet pipe for kitchens and bathrooms.

According to one aspect of the invention, the invention provides a folding-proof negative pressure-resistant water inlet and outlet pipe for kitchens and bathrooms.

The anti-folding negative pressure resistant water inlet and outlet pipe for kitchens and bathrooms is sequentially composed of a first inner pipe, a woven layer, a second inner pipe, a reinforcing layer and an outer coating layer. Wherein, first inner tube, weaving layer and second inner tube are through a lot of injection moulding technology integrated into one piece. The reinforcing layer is closely attached to the outer wall of the second inner pipe and restrains the second outer pipe. The outer coating is tightly coated on the outer surface of the second outer pipe below the reinforced layer and the reinforced layer.

Specifically, the reinforcing layer is plastic wires or metal wires tightly attached to the outer wall surface of the second inner pipe.

Preferably, the plastic wire or the metal wire is spirally wound along the side wall of the second inner tube in a spring shape.

Preferably, the first inner tube is a bellows tube.

Specifically, the woven layer is a composite formed by one or more than two of a plant fiber mesh, a metal woven mesh and a plastic woven mesh which are completely embedded between the first inner pipe and the second inner pipe.

Further, this plant fiber net is the cotton-flax fiber net, and this metal mesh grid is the stainless steel mesh grid, and this plastics mesh grid is nylon wire or dacron net.

In other embodiments, the woven layer may also be a composite net formed by co-weaving two or more groups of plant fibers, metal wires and plastic wires.

Further, this plant fiber is single strand or stranded cotton-flax fiber, and this wire is single strand or stranded stainless steel wire, and this plastic filament is single strand or stranded nylon yarn or dacron silk.

Further, the coating layer is a heat-shrinkable tube layer or a plastic dipping layer or a spraying plastic layer.

Specifically, the heat-shrinkable tube layer is a flexible plastic layer which is formed by sleeving a heat-shrinkable tube on a second outer tube wrapped with a reinforcing layer and then heating the heat-shrinkable tube by hot air to shrink the heat-shrinkable tube, wherein the flexible plastic layer is tightly attached to the reinforcing layer and the outer surface of the second outer tube below the reinforcing layer;

the plastic coating layer is a flexible polymer layer formed on the outer surface of the reinforcing layer and the outer surface of the second outer pipe below the reinforcing layer by a polymerization process after the second outer pipe wrapped with the reinforcing layer is immersed in the polymer solution;

the spraying of the plastic layer refers to the spraying of a layer of rubber on the outer surface of the second outer tube wrapped with the reinforcing layer by a spraying process to form a flexible rubber layer.

According to another aspect of the invention, a manufacturing method of the anti-folding negative pressure resistant water inlet and outlet pipe for kitchens and bathrooms is provided.

The manufacturing method includes the following five steps S1 to S5.

S1, injection molding the first inner pipe: and (4) carrying out extrusion molding on the first inner pipe by using an injection molding machine according to the set requirement.

S2, after the first inner pipe is molded, winding the woven layer on the outer wall of the first inner pipe: after the first inner pipe is hardened and formed, the woven layer is wound on the surface of the first inner pipe in one of the following modes, and a plant fiber net, a metal woven net or a plastic woven net and the like are wrapped on the surface of the outer wall of the first inner pipe through a winding part; or, the net-shaped braided layer is braided on the outer surface of the braided component by using two or more groups of vegetable fibers, metal wires and plastic wires.

Wherein, the winding part can use multiple finished product nets such as vegetable fibre net, metal mesh grid or plastic mesh grid to carry out a lot of parcels in order to strengthen the performance of weaving layer to this first inner tube surface.

The braided part can be woven by two or more than two groups of plant fibers, metal wires and plastic wires on the outer wall of the first inner tube for one-time mixed braiding or multiple braiding to enhance the performance of the braided layer.

Specifically, this plant fiber net is the cotton-flax fiber net, and this metal mesh grid is the stainless steel mesh grid, and this plastics mesh grid is nylon wire or dacron net.

Specifically, this plant fiber is single strand or stranded cotton-flax fiber, and this wire is single strand or stranded stainless steel wire, and this plastic filament is single strand or stranded nylon yarn or dacron silk.

S3, repeating the step S1, and performing injection molding on the second inner pipe outside the braided layer: and (3) carrying out secondary extrusion molding on the first inner pipe wrapped with the woven layer by using an injection molding machine according to a set requirement to prepare a second inner pipe, and integrating the second inner pipe, the woven layer and the first inner pipe into a whole.

The first inner pipe wrapped with the woven layer can return to the initial position of the injection molding machine for extrusion molding again; or directly connecting another injection molding machine in series to extrude and form the first inner tube wrapped with the woven layer. The former is intermittent production, and is suitable for the condition that the materials of the first inner pipe and the second inner pipe are the same; the latter is continuous production, and is more suitable for the situation that the materials of the first inner pipe and the second inner pipe are different.

S4, after the second inner pipe is formed, winding the reinforcing layer on the outer wall of the second inner pipe to form a pipe fitting main body: in this step, a reinforcing layer may be formed by winding a plastic wire or a metal wire around the outer wall of the second inner tube using a winding work similar to the winding member in the step S2.

S5, manufacturing an outer coating on the outer wall of the pipe fitting main body by adopting one of the following modes: sleeving a layer of heat-shrinkable tube outside the pipe fitting main body, and then heating by hot air to shrink the heat-shrinkable tube to form a flexible plastic outer coating layer tightly attached to the outer surface of the pipe fitting main body;

or immersing the pipe fitting main body in the polymer polymerization liquid, and forming a flexible polymer polymerization outer coating on the outer surface of the pipe fitting main body by a polymerization process;

or, a layer of flexible rubber outer coating formed by rubber is uniformly sprayed on the outer surface of the pipe fitting main body through a spraying process.

Technical scheme's kitchen guarding is with preventing rolling over anti negative pressure business turn over water pipe more than adopting, form composite construction through the embedding weaving layer, can strengthen the intensity of water pipe lateral wall, make the water pipe also have superstrong anti negative pressure ability when having superstrong anti malleation ability, the enhancement layer can transmit the atress when the bending of water pipe along the water pipe axial simultaneously, and then dispersed the atress of water pipe lateral wall to make the water pipe pliability good, appear rolling over flat when can avoiding the bending of water pipe. The anti-folding negative pressure resistant composite water inlet and outlet pipe is good in fitting degree and good in radial consistency of the water pipe, and can be cut at any time according to the use environment.

Drawings

Fig. 1 is a schematic structural view of a folding-proof negative pressure-resistant water inlet and outlet pipe for kitchens and bathrooms in an embodiment of the invention.

Fig. 2 is a schematic cross-sectional view of the anti-folding negative pressure inlet and outlet water pipe for kitchen and bath in fig. 1.

Fig. 3 is a schematic view of a manufacturing method of the anti-folding negative pressure inlet and outlet water pipe for kitchens and bathrooms shown in fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

Fig. 1 and 2 schematically show a folding-proof negative pressure-resistant water inlet and outlet pipe for kitchens and bathrooms according to one embodiment of the invention.

As shown in the figure, the anti-folding negative pressure resistant water inlet and outlet pipe for kitchens and bathrooms sequentially comprises a first inner pipe 1, a woven layer 2, a second inner pipe 3, a reinforcing layer 4 and an outer coating layer 5.

Wherein, first inner tube 1, weaving layer 2 and second inner tube 3 are through a lot of injection moulding technology integrated into one piece.

The reinforcing layer 4 is closely adhered to the outer wall of the second inner pipe 3 and applies a constraint to the second outer pipe 3.

The outer coating 5 is closely coated on the outer surface of the reinforcing layer 4 and the outer surface of the second outer tube 3 below the reinforcing layer 4.

The reinforcing layer 4 is typically a plastic or metal wire that is applied against the outer wall surface of the second inner tube 3. The plastic wire or the metal wire is spirally wound along the side wall of the second inner pipe in a spring shape.

In this embodiment, the reinforcing layer 4 is a spring made of a metal wire, and the inner diameter of the spring corresponds to the outer diameter of the second inner tube 3.

In the present embodiment, the first inner pipe 1 is a straight pipe.

In other embodiments, the first inner tube 1 may also be a bellows tube. The flexibility of the corrugated pipe is better.

In this embodiment, the braided layer 2 is a stainless steel braided mesh that is tightly attached to the outer wall surface of the first inner pipe 1.

In other embodiments, the woven layer 2 may also be one of a vegetable fiber mesh, a metal woven mesh, a plastic woven mesh, or a composite formed by two or more of them.

The braided layer 2 can be a layer of net structure or a composite structure of multiple layers of net structures.

The plant fiber net can be a cotton-flax fiber net, and the plastic woven net can be a nylon net or a polyester net.

The coating layer 5 is a heat shrinkable tube layer or a plastic dipping layer or a spraying plastic layer. The coating layer 4 can protect the water pipe and is more attractive in appearance.

Specifically, the heat-shrinkable tube layer is a flexible plastic layer formed by coating a heat-shrinkable tube on the second outer tube 3 wrapped with the reinforcing layer 4 and then heating the heat-shrinkable tube by hot air to shrink the heat-shrinkable tube, and tightly attaching the outer surface of the reinforcing layer 4 and the outer surface of the second outer tube 3 below the reinforcing layer 4;

the plastic-impregnated layer is a flexible polymer layer formed on the outer surface of the reinforcing layer 4 and the outer surface of the second outer tube 3 below the reinforcing layer 4 by a polymerization process after the second outer tube 3 wrapped with the reinforcing layer 4 is immersed in the polymer polymerization liquid;

the spraying of the plastic layer refers to the spraying of a layer of rubber on the outer surface of the second outer tube 3 wrapped with the reinforcing layer 4 by a spraying process to form a flexible rubber layer on the outer surface of the reinforcing layer 4 and the outer surface of the second outer tube 3 below the reinforcing layer 4.

Example 2

The difference from the embodiment 1 is that the braided layer is a composite net formed by mixing and braiding two or more groups of plant fibers, metal wires and plastic wires.

Wherein, the plant fiber is single strand or stranded cotton-flax fiber, the wire is single strand or stranded stainless steel wire, and the plastic filament is single strand or stranded nylon yarn or dacron silk.

Example 3

Fig. 3 schematically shows a method for manufacturing the anti-folding and anti-negative pressure water inlet and outlet pipe for kitchens and bathrooms in the embodiment 1.

As shown in fig. 3, the manufacturing method includes the following five steps S1 to S5.

S1, injection molding the first inner pipe: and (3) performing extrusion molding on the first inner pipe by using an injection molding machine according to set requirements.

S2, after the first inner pipe is molded, winding the woven layer on the outer wall of the first inner pipe: after the first inner pipe is hardened and formed, the woven layer is wound on the surface of the first inner pipe in one of the following modes, and a plant fiber net, a metal woven net or a plastic woven net and the like are wrapped on the surface of the outer wall of the first inner pipe through a winding part; wherein, the winding part can use multiple finished product nets such as vegetable fibre net, metal mesh grid or plastic mesh grid to carry out a lot of parcels in order to strengthen the performance of weaving layer to this first inner tube surface.

And S4, after the second inner pipe is formed, winding the reinforcing layer on the outer wall of the second inner pipe to manufacture the pipe fitting main body.

In this step, a plastic wire or a metal wire may be wound around the outer wall of the second inner tube to form a reinforcing layer using a winding work similar to the winding member in the step S2.

Example 4

The difference from the embodiment 3 is that the net-like braid layer is woven on the outer surface of the braided member by using two or more groups of vegetable fiber, metal wire, and plastic wire as a mixed braiding.

What has been described above are merely some of the embodiments of the present invention. The plastic cement used for the first inner pipe and the second inner pipe can be reasonably selected according to the industry acquaintance in the field and the requirements of toughness and strength. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims

1. The anti-folding negative pressure resistant water inlet and outlet pipe for kitchens and bathrooms is characterized by sequentially comprising a first inner pipe, a woven layer, a second inner pipe, a reinforcing layer and an outer coating layer, wherein the first inner pipe, the woven layer and the second inner pipe are integrally formed through multiple injection molding processes, the reinforcing layer is tightly attached to the outer wall of the second inner pipe and is used for constraining the second outer pipe, and the outer coating layer is tightly coated on the reinforcing layer and the outer surface of the second outer pipe below the reinforcing layer.

2. The folding-proof negative pressure-resistant water inlet and outlet pipe for kitchens and bathrooms as claimed in claim 1, wherein the reinforcing layer is a plastic wire or a metal wire tightly adhered to the outer wall surface of the second inner pipe.

3. The folding-proof negative pressure-resistant water inlet and outlet pipe for kitchens and bathrooms as claimed in claim 2, wherein the plastic wires or the metal wires are spirally wound along the side wall of the second inner pipe.

4. The anti-folding negative pressure inlet and outlet water pipe for kitchens and bathrooms as claimed in any one of claims 1 to 3, wherein said first inner pipe is a corrugated pipe.

5. The folding-proof negative-pressure-resistant water inlet and outlet pipe for kitchens and bathrooms as claimed in claim 1, wherein the woven layer is one or a composite of two or more of a plant fiber net, a metal woven net and a plastic woven net completely embedded between the first inner pipe and the second inner pipe, the plant fiber net is a cotton-flax fiber net, the metal woven net is a stainless steel woven net, and the plastic woven net is a nylon net or a polyester net.

6. The anti-folding negative pressure resistant water inlet and outlet pipe for kitchens and bathrooms as claimed in claim 1, wherein said woven layer is a composite net formed by co-weaving two or more groups of plant fiber, metal wire and plastic wire, said plant fiber is single-strand or multi-strand cotton fiber, said metal wire is single-strand or multi-strand stainless steel wire, and said plastic wire is single-strand or multi-strand nylon wire or polyester wire.

7. The anti-folding negative pressure resistant water inlet and outlet pipe for kitchens and bathrooms as claimed in claim 1, wherein the coating layer is a heat shrinkable pipe layer or a plastic dipping layer or a spraying plastic layer.

8. The manufacturing method of the anti-folding and anti-negative pressure water inlet and outlet pipe for kitchens and bathrooms as claimed in claim 1, comprising the following steps:

s1, injection molding the first inner pipe;

s2, winding the woven layer on the outer wall of the first inner pipe after the first inner pipe is formed;

s3, repeating the step S1, and carrying out injection molding on the second inner pipe outside the braided layer;

s4, after the second inner pipe is formed, winding the reinforcing layer on the outer wall of the second inner pipe to form a pipe fitting main body;

s5, manufacturing the outer coating on the outer wall of the pipe fitting main body by adopting one of the following modes:

after a layer of heat-shrinkable tube is sleeved outside the pipe fitting main body, hot air heating is carried out to shrink the heat-shrinkable tube to form a flexible plastic outer coating layer which is tightly attached to the outer surface of the pipe fitting main body;

or immersing the pipe fitting main body in a polymer polymerization liquid, and forming a flexible polymer polymerization outer coating on the outer surface of the pipe fitting main body through a polymerization process;

or a layer of flexible rubber outer coating formed by uniformly spraying rubber on the outer surface of the pipe fitting main body through a spraying process.

9. The method for manufacturing a folding-proof negative-pressure-resistant water inlet/outlet pipe for kitchens and bathrooms as claimed in claim 8, wherein the step of S2 is:

wrapping a plant fiber net, a metal woven net or a plastic woven net and the like on the surface of the outer wall of the first inner pipe by adopting a winding part;

or, two or more than two groups of plant fibers, metal wires and plastic wires are mixed and braided on the outer surface of the first inner pipe by adopting a braiding part to braid a reticular braiding layer.

10. The method of claim 11, wherein the winding member wraps the surface of the first inner pipe with a plurality of finished nets such as the plant fiber net, the metal woven net or the plastic woven net to enhance the performance of the woven layer; the woven component is formed by weaving two or more groups of the plant fibers, the metal wires and the plastic wires into a net on the outer wall of the first inner pipe in a mixed mode once or multiple times.