CN202813842U - Pipe connector and water tank with same - Google Patents

Abstract

The utility model discloses a pipe connector and have water tank of this pipe connector, the internal thread has been seted up on the pipe connector inner wall, is provided with the interior bushing pipe of plastics that leans on partial internal thread in the pipe connector, and the outer tip cover of pipe connector is equipped with the plastics outer tube. The utility model discloses a set up interior bushing pipe of plastics and plastics outer tube on the pipe connector mouth to simple structure and lower cost have realized rust-resistant, the anticorrosion of pipe connector mouth.

Description

Pipe interface and water tank with the pipe interface

technical field

The utility model relates to the technical field of water heater structures, in particular to a pipe joint applied to a water tank and a water tank with the pipe joint.

Background technique

With the gradual popularization of green energy knowledge, people's awareness of renewable energy has gradually increased, and the use of green and environmentally friendly solar water heaters has become a trend. More and more consumers are beginning to consider choosing solar water heaters, especially Split pressurized solar water heaters are favored by high-end consumers because of their high water outlet pressure, balanced bathing temperature, and beautiful installation. At present, the liner materials of pressurized water tanks are mainly divided into stainless steel and pickling plate enamel. Stainless steel materials have good processing performance and strong anti-corrosion ability, but because of their high cost, they are more sensitive to water quality, and areas with poor water quality will seriously shorten the inner liner of stainless steel. The service life of gallbladder, thereby has limited its popularization and application. Because of its low cost, strong water quality adaptability, and anodic protection measures, the enamel liner greatly increases its service life and is widely used.

The inner tank of the enamel water tank is made of special enamel steel plate, and the matching pipe interface is made of carbon steel. When the water tank is used outdoors, the outer end surface of the exposed carbon steel pipe interface is severely corroded by rainwater. At the same time, the inner thread of the pipe interface is also easily corroded because the enamel layer cannot cover it, thereby accelerating the consumption of the anode and greatly reducing the service life of the water tank.

In order to prevent the corrosion of pipe joints, the prior art generally adopts the solution of brushing anti-rust paint on the pipe joints or selecting inner shrinkage pipes. However, brushing anti-rust paint is not easy to operate, and due to poor coating adhesion, it is easy to fall off, the protection time is short, and painting will pollute the environment. The inner shrinkage tube has poor manufacturability, complex processing, and the external connecting pipe fittings used are not universal, and need to be specially designed and manufactured, thereby greatly increasing the product cost.

Contents of the invention

One of the purposes of this utility model is to provide a pipe joint for the above-mentioned defects in the prior art. By arranging a plastic inner liner and a plastic outer sleeve on the pipe joint, the pipe joint can be realized with a simple structure and a relatively low cost. Anti-rust, anti-corrosion.

In order to solve the above technical problems, the pipe joint of the utility model is realized by the following technical solutions:

A pipe joint is provided with an internal thread on the inner wall of the pipe joint, a plastic inner lining pipe abutting against part of the internal thread is arranged in the pipe joint, and a plastic outer sleeve is sleeved on the outer end of the pipe joint.

For the above-mentioned pipe joint, in order to form a sealing surface in close contact with the external water pipe, the end of the lining pipe close to the outer end of the pipe joint has a bell mouth that opens toward the outer end of the pipe joint.

For the above-mentioned pipe joint, in order to prevent the liner pipe from being over-fitted and entering the water tank, the end of the liner pipe away from the bell mouth is retracted to form a limiting boss.

For the above-mentioned pipe joint, in order to facilitate assembly and at the same time realize the overall waterproofing of the outer end of the pipe joint, the overall outer sleeve is cylindrical in shape, and its longitudinal section is in an "L" shape.

The second purpose of the utility model is to provide a water tank with the above-mentioned pipe joint, so as to improve the service life and performance of the water tank and reduce the cost of the water tank.

In order to achieve the above-mentioned technical purpose, the water tank of the present utility model adopts the following technical solutions to realize:

A water tank, comprising a water tank body, an enamel layer arranged in the water tank body and a pipe joint arranged on the water tank body, the enamel layer extends to the inner wall of the pipe joint, an internal thread is provided on the inner wall of the pipe joint, and a pipe joint is arranged in the pipe joint There is a plastic liner pipe against part of the internal thread and the enamel layer on the inner wall of the pipe joint, and a plastic outer sleeve is set on the outer end of the pipe joint exposed to the water tank body.

For the above-mentioned water tank, in order to form a sealing surface in close contact with the external water pipe, the end of the inner liner pipe close to the outer end of the pipe joint has a bell mouth that opens toward the outer end of the pipe joint.

In the above-mentioned water tank, in order to prevent the liner pipe from being over-fitted and entering the water tank, the end of the liner pipe away from the bell mouth is retracted to form a limiting boss.

For the above-mentioned water tank, in order to facilitate assembly and simultaneously realize the overall waterproofing of the outer end of the pipe joint, the overall outer sleeve is in the shape of a cylinder, and its longitudinal section is in an "L" shape.

As for the above water tank, the pipe joint is fixed on the water tank body by welding, and a pipe joint guard is provided in the gap between the pipe joint and the water tank body.

Compared with the prior art, the advantages and positive effects of this utility model are: the pipe interface of the utility model is provided with a plastic liner on the internal thread of the pipe interface, so that the water directly communicates with the external water pipe through the inner liner, eliminating the The hidden danger of water contacting the internal thread and corroding the internal thread; by setting a plastic outer sleeve at the outer end of the pipe joint to protect the exposed area of the pipe joint, it can effectively prevent rainwater erosion and avoid corrosion of the exposed part of the pipe joint. And the lower cost realizes the anti-rust and anti-corrosion of the inside and outside of the pipe interface, which improves the service performance and life of the water tank.

After reading the specific implementation of the utility model in conjunction with the accompanying drawings, other features and advantages of the utility model will become clearer.

Description of drawings

Fig. 1 is a schematic diagram of an explosion structure of an embodiment of a pipe joint of the present invention;

Fig. 2 is the structural representation of an embodiment of the water tank of the present utility model;

Fig. 3 is a schematic structural view of the pipe joint in Fig. 2 in use.

In the above-mentioned figures, the reference signs and their corresponding component names are as follows:

1. Water tank body; 11. Enamel layer; 2. Pipe interface; 21. Internal thread; 22. Outer end of pipe interface; 23. Limit rib; 3. Lining pipe; 31. Bell mouth; 33. Cylindrical surface; 4. Outer casing; 5. Pipe joint guard; 6. External water pipe.

Detailed ways

Specific embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings.

Please refer to FIG. 1 and FIG. 3 , wherein FIG. 1 is a schematic diagram of an exploded structure of an embodiment of the pipe joint of the present invention, and FIG. 3 is a schematic diagram of the structure of the pipe joint in use.

As shown in FIG. 1 and FIG. 3 , an internal thread 21 is provided on the inner wall of the pipe interface 2 of this embodiment, so as to be threadedly connected with the external water pipe 6 . Considering that when the pipe interface 2 is connected with the external water pipe 6, there will always be some internal threads 21 that are not threaded with the external water pipe 6, that is, the rest of the internal threads. If this part of the unconnected internal thread is in direct contact with water, it will easily get rusted and corroded, which will affect the performance of the pipe joint 2. In order to solve this problem, this embodiment is provided with a plastic lining pipe 3 in the pipe interface 2 . The inner liner 3 is cylindrical as a whole, with a bell mouth 31 opening outward at one end, and retracted at the other end to form a limiting boss 32 , with a cylindrical surface 33 in the middle. The lining pipe 3 will abut against a part of the internal thread 21 , specifically, as shown in FIG. 2 , it is against a part of the internal thread 21 in the pipe interface 2 that is not screwed to the external water pipe 6 . Moreover, the liner pipe 3 extends laterally in the pipe joint 2, and its bell mouth 31 is close to the pipe joint outer end 22 that will be connected with the external water pipe 6, and the opening of the bell mouth 31 is toward the pipe joint outer end 22, which A part of the cylindrical surface 33 abuts against the internal thread 21 , and the other part contacts with the enamel layer 11 deep into the pipe joint 2 and abuts against the enamel layer 11 .

By arranging the plastic liner 3 with the above-mentioned structure inside the pipe interface 2 and connecting the external water pipe 6 on the pipe interface, the external water pipe 6 will be pressed against the bell mouth 31 to form a sealing surface, which effectively prevents the water from infiltrating through the gap. onto the internal thread 21. Moreover, because the cylindrical surface 33 of the liner pipe 3 is in close contact with the enamel layer 11, the water flow will directly communicate with the external water pipe 6 through the liner pipe 3, preventing the water flow from contacting the internal thread 21, and preventing the internal thread 21 from being damaged by water. potential for corrosion. At the same time, because the other end of the liner pipe 3 away from the bell mouth 31 is retracted, a limiting boss 32 is formed, and the limiting boss 32 cooperates with the limiting rib 23 inside the pipe joint 2 to play a role of limiting , it can effectively prevent the inner liner 3 from entering into the water tank body 1 due to excessive insertion of the liner 3 into the pipe interface 2 when the inner liner 3 is assembled in the pipe interface 2 .

In addition, in this embodiment, since the outer end 22 of the pipe joint 2 will be exposed in the air during use, in order to prevent rainwater from eroding the exposed part, a plastic outer sleeve 4 is sleeved on the outer end 22 of the pipe joint. . The plastic outer sleeve 4 is cylindrical as a whole, and its longitudinal section is "L"-shaped, as shown in Figure 3, so that it is convenient to be placed on the pipe joint 2, and can fully cover the outer end 22 of the pipe joint, so as to realize the The comprehensive waterproof protection of the exposed part of the pipe joint reduces the corrosion of the exposed part.

In this embodiment, the inner liner 3 can be made of plastic materials such as PP (polypropylene), ABS (acrylonitrile-butadiene-styrene) or other corrosion-resistant materials, and the outer sleeve 4 can be made of PE (polyethylene). ), PP (polypropylene) and other plastic materials or other corrosion-resistant materials.

The pipe interface 2 with the above structure can be applied in a water tank to improve the service performance and life of the water tank.

As shown in Fig. 2, this Fig. 2 shows a schematic structural view of an embodiment of a water tank of the present invention, and the water tank of this embodiment is a pressurized water tank of a solar water heater.

As shown in Fig. 3, the water tank of this embodiment has a water tank body 1, and an enamel layer is arranged in the water tank body 1 as an inner liner material, and a plurality of pipe interfaces 2 are arranged on the water tank body 1 for connecting with external water pipes. connected to realize the inflow or outflow of water in the tank.

In this embodiment, the pipe interface 2 is fixed on the water tank body 1 by welding, and a pipe interface guard 5 is provided in the gap between the pipe interface 2 and the water tank body 1, so as to cover the pipe interface 2 and the water tank body 1 The gap between them ensures the aesthetic appearance of the water tank. Moreover, the pipe interface 2 adopts the structure of the embodiment in FIG. 1 , which has good waterproof performance and improves the overall service life of the water tank. Applying the pipe interface structure of the embodiment in Figure 1 to the water tank, the installation is simple, the operability is strong, the waterproof effect is obvious, and the adaptability to the water tank is strong, the overall cost of the water tank is reduced, and it is convenient for large-scale promotion and use in solar water heaters.

The above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, the aforementioned implementation can still be carried out. The technical solutions described in the examples are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed by the utility model.

Claims (9)

1. an interface tube offers internal thread at the interface tube inwall, it is characterized in that, is provided with the plastic inner lining pipe that is resisted against on the part internal thread in interface tube, is arranged with plastic outer sleeve in the interface tube outer end.

2. interface tube according to claim 1 is characterized in that, described internal lining pipe has opening towards the horn mouth of interface tube outer end near an end of described interface tube outer end.

3. interface tube according to claim 2 is characterized in that, described internal lining pipe inside contracts away from a described bell-mouthed end, forms positive stop lug boss.

4. each described interface tube in 3 according to claim 1 is characterized in that described outer tube integral body is cylindrical, and its vertical section is L-shaped.

5. water tank, comprise tank body, be arranged on the enamel layer in the tank body and be arranged on interface tube on the tank body, enamel layer extends on the interface tube inwall, offer internal thread at the interface tube inwall, it is characterized in that, be provided with the plastic inner lining pipe that is resisted against on part internal thread and the interface tube inwall enamel layer in interface tube, the outer end that exposes to tank body at interface tube is arranged with plastic outer sleeve.

6. water tank according to claim 5 is characterized in that, described internal lining pipe has opening towards the horn mouth of interface tube outer end near an end of described interface tube outer end.

7. water tank according to claim 6 is characterized in that, described internal lining pipe inside contracts away from a described bell-mouthed end, forms positive stop lug boss.

8. water tank according to claim 5 is characterized in that, described outer tube integral body is cylindrical, and its vertical section is L-shaped.

9. each described water tank in 8 according to claim 5 is characterized in that described interface tube is fixed by welding on the described tank body, and is provided with interface tube in the slit between interface tube and the tank body and protects mouth.

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