Steel-plastic composite tee joint

Abstract

The utility model relates to a steel-plastic composite tee joint which comprises a tee joint body, a composite protection mechanism is arranged on the tee joint body and comprises a first bonding layer fixedly installed on the surface of the inner side of the tee joint body, and an inner plastic layer is fixedly installed on the surface of the inner side of the first bonding layer. And a second bonding layer is fixedly mounted on the outer side surface of the tee joint body. According to the steel-plastic composite tee joint, the inner plastic layer made of food-grade polypropylene is arranged on the inner side of the tee joint body, so that the tee joint body can be prevented from being in direct contact with water, substances on the surface of the tee joint body can be prevented from being separated into water, and the use safety of the tee joint body can be improved; the problems that in the prior art, a pure metal three-way pipe fitting is prone to separating out metal substances in water, and the body health of a user is prone to being harmed are solved, meanwhile, the threaded sleeve is arranged on the outer plastic layer, the sealing gasket is arranged on the three-way body, and the connection sealing performance of the three-way body and a water pipe can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connectors, in particular to a steel-plastic composite tee. Background Art

[0002] A tee is a pipe connector, usually used to connect three pipes or branch parts of a pipe system to achieve fluid diversion or confluence. A tee usually has three interfaces, one of which is the main pipe and the other two are branch pipes. It can be divided into two types: equal-diameter tees and reducing-diameter tees. Different specifications and materials can be selected according to actual needs. Tees are widely used in industrial pipe systems for diversion, confluence, branching, and confluence operations. They are commonly found in chemical, petroleum, natural gas, water treatment and other fields.

[0003] Chinese patent CN218000814U discloses a three-way assembly. The three-way assembly includes: a three-way tube body, an outer sleeve and a valve. The material of the three-way tube body is a food-grade material; the outer sleeve is sleeved on at least a portion of the three-way tube body, and the strength of the outer sleeve is greater than that of the three-way tube body; the valve is arranged on the first water outlet of the three-way tube body to control the conduction and cutoff of the first water outlet. During the use of the three-way assembly provided by the embodiment of the utility model, water and other fluids can flow in the three-way tube body without contacting the outer sleeve. Since the material of the three-way tube body is a food-grade material, and nickel and other substances will not be precipitated in the food-grade material, even after being soaked in pure water, there will be no problem of excessive nickel and lead, and the user's water safety is guaranteed.

[0004] The above patent improves the shortcomings of the prior art pure metal three-way pipe fittings that easily precipitate metal substances in water and easily endanger the health of users. This embodiment provides another implementation scheme for the problems raised in the above patent. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a steel-plastic composite tee, which has the advantage of high safety and solves the problem that pure metal tee pipe fittings in the prior art are prone to precipitate metal substances in water, which is likely to endanger the health of users.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel-plastic composite tee, comprising a tee body, on which a composite protection mechanism is provided;

[0007] The composite protection mechanism includes a first adhesive layer fixedly installed on the inner surface of the tee body, an inner plastic layer fixedly installed on the inner surface of the first adhesive layer, a second adhesive layer fixedly installed on the outer surface of the tee body, and an outer plastic layer fixedly installed on the outer surface of the second adhesive layer.

[0008] Furthermore, a first annular groove is formed on the surface of the outer plastic layer, and a threaded sleeve is rotatably installed in the first annular groove.

[0009] The beneficial effect of adopting the above further solution is that the connection stability between the tee and the water pipe can be improved by providing the threaded sleeve.

[0010] Furthermore, the number of the first annular grooves and the threaded sleeves is three, and the three first annular grooves and the threaded sleeves are respectively located at three interfaces of the tee body.

[0011] The beneficial effect of adopting the above further solution is that the threaded sleeve and the three-way interface can be matched.

[0012] Furthermore, a second annular groove is formed on the end surface of the tee body, and a sealing gasket is fixedly installed inside the second annular groove.

[0013] The beneficial effect of adopting the above further solution is that the sealing between the tee body and the water pipe can be improved.

[0014] Furthermore, the cross-sectional shape of the sealing gasket is U-shaped.

[0015] The beneficial effect of adopting the above further solution is that the contact area between the water pipe and the sealing gasket can be increased.

[0016] Furthermore, the tee body is a steel pipe.

[0017] The beneficial effect of adopting the above further solution is that the overall strength of the tee can be improved.

[0018] Furthermore, the first adhesive layer and the second adhesive layer are polyurethane.

[0019] The beneficial effect of adopting the above further solution is that the stability between the tee body and the inner plastic layer and the outer plastic layer can be improved.

[0020] Furthermore, the inner plastic layer is food grade polypropylene.

[0021] The beneficial effect of adopting the above further solution is that direct contact between the tee body and water can be avoided.

[0022] Furthermore, the outer plastic layer is high-density polyethylene.

[0023] The beneficial effect of adopting the above further solution is that the external wear resistance and strength of the entire tee can be improved.

[0024] Furthermore, a circular hole is formed on one end surface of the threaded sleeve, and the circular hole is matched with the first annular groove.

[0025] The beneficial effect of adopting the above further solution is that the threaded sleeve can be better inserted into the first annular groove through the circular hole.

[0026] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0027] The steel-plastic composite tee is provided with an inner plastic layer made of food-grade polypropylene on the inner side of the tee body. When used, the tee body can be prevented from directly contacting with water, and substances on the surface of the tee body can be prevented from precipitating into the water, which is beneficial to improving the safety of the tee body. It solves the problem in the prior art that pure metal tee pipe fittings are prone to precipitating metal substances in water, which is harmful to the health of users. At the same time, a threaded sleeve is provided on the outer plastic layer, and a sealing gasket is provided on the tee body. When used, the sealing performance of the connection between the tee body and the water pipe can be improved, which is beneficial to preventing water leakage at the connection between the tee body and the water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the threaded sleeve structure of the utility model;

[0030] Figure 3 This is a schematic diagram of the first annular groove of the structure of the utility model;

[0031] Figure 4 This is a schematic diagram of the end face of the tee body of the utility model structure;

[0032] Figure 5 This is a schematic diagram of the surface of the tee body of the utility model;

[0033] Figure 6 It is a schematic diagram of the structural sealing gasket of the utility model.

[0034] In the figure: 1. tee body; 2. first adhesive layer; 3. inner plastic layer; 4. second adhesive layer; 5. outer plastic layer; 6. first annular groove; 7. threaded sleeve; 8. second annular groove; 9. sealing gasket; 10. round hole. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] See also Figure 1-6In this embodiment, a steel-plastic composite tee includes a tee body 1. The tee body 1 is a steel pipe, which can improve the overall strength of the tee. The end surface of the tee body 1 is provided with a second annular groove 8. A sealing gasket 9 is fixedly installed inside the second annular groove 8 to improve the sealing between the tee body 1 and the water pipe. The cross-sectional shape of the sealing gasket 9 is U-shaped, which can increase the contact area between the water pipe and the sealing gasket 9. The tee body 1 is provided with a composite protective mechanism, which includes a first fixedly installed on the inner surface of the tee body 1. Adhesive layer 2, an inner plastic layer 3 is fixedly installed on the inner surface of the first adhesive layer 2, the inner plastic layer 3 is food grade polypropylene, which can prevent the tee body 1 from direct contact with water, a second adhesive layer 4 is fixedly installed on the outer surface of the tee body 1, the first adhesive layer 2 and the second adhesive layer 4 are polyurethane, an outer plastic layer 5 is fixedly installed on the outer surface of the second adhesive layer 4, the outer plastic layer 5 is high-density polyethylene, which can improve the stability between the tee body 1 and the inner plastic layer 3 and the outer plastic layer 5, and can improve the overall external wear resistance and strength of the tee.

[0037] A first annular groove 6 is provided on the surface of the outer plastic layer 5, and a threaded sleeve 7 is rotatably installed in the first annular groove 6. The threaded sleeve 7 can improve the connection stability between the tee and the water pipe by providing the threaded sleeve 7. There are three first annular grooves 6 and three threaded sleeves 7. The three first annular grooves 6 and the threaded sleeves 7 are respectively located at the three interfaces of the tee body 1, so that the threaded sleeve 7 can match the tee interface, and the threaded sleeve 7 can be better inserted into the first annular groove 6 through the circular hole 10.

[0038] It should be noted that the food-grade polyethylene material used in the inner plastic layer 3 of this embodiment has been specially treated and does not contain substances harmful to human health. It meets food safety standards and can safely come into contact with food and water. In addition, food-grade polyethylene has good corrosion resistance and is not easily corroded by chemical substances.

[0039] It should be noted that the high-density polyethylene used in the outer plastic layer 5 of this embodiment has good tensile resistance, compression resistance and wear resistance, and is not easily affected by wear and tear. At the same time, the high-density polyethylene material has good corrosion resistance and is not easily corroded by chemical substances.

[0040] The working principle of the above embodiment is:

[0041] When in use, the water pipe joint is inserted into the second annular groove 8 so that the water pipe joint contacts the sealing gasket 9, and then the threaded sleeve 7 is rotated to thread the threaded sleeve 7 into the threaded groove on the water pipe, thereby completing the connection between the tee as a whole and the water pipe. The inner plastic layer 3 can prevent water from directly contacting the tee body 1, and can prevent substances on the surface of the tee body 1 from precipitating into the water. The outer plastic layer 5 can protect the exterior of the tee as a whole, and can improve the strength and wear resistance of the exterior of the tee as a whole.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel-plastic composite tee, comprising a tee body (1), characterized in that: The three-way body (1) is provided with a composite protection mechanism; The composite protective mechanism comprises a first adhesive layer (2) fixedly mounted on the inner surface of a tee body (1), an inner plastic layer (3) fixedly mounted on the inner surface of the first adhesive layer (2), a second adhesive layer (4) fixedly mounted on the outer surface of the tee body (1), and an outer plastic layer (5) fixedly mounted on the outer surface of the second adhesive layer (4).

2. The steel-plastic composite tee according to claim 1, characterized in that: A first annular groove (6) is provided on the surface of the outer plastic layer (5), and a threaded sleeve (7) is rotatably installed in the first annular groove (6).

3. The steel-plastic composite tee according to claim 2, characterized in that: The number of the first annular grooves (6) and the threaded sleeves (7) is three, and the three first annular grooves (6) and the threaded sleeves (7) are respectively located at three interfaces of the tee body (1).

4. The steel-plastic composite tee according to claim 1, characterized in that: The end surface of the tee body (1) is provided with a second annular groove (8), and a sealing gasket (9) is fixedly installed inside the second annular groove (8).

5. The steel-plastic composite tee according to claim 4, characterized in that: The cross-sectional shape of the sealing gasket (9) is U-shaped.

6. The steel-plastic composite tee according to claim 1, characterized in that: The tee body (1) is a steel pipe.

7. The steel-plastic composite tee according to claim 1, characterized in that: The first adhesive layer (2) and the second adhesive layer (4) are polyurethane.

8. The steel-plastic composite tee according to claim 1, characterized in that: The inner plastic layer (3) is food grade polypropylene.

9. The steel-plastic composite tee according to claim 1, characterized in that: The outer plastic layer (5) is high-density polyethylene.

10. The steel-plastic composite tee according to claim 2, characterized in that: A circular hole (10) is formed on one end surface of the threaded sleeve (7), and the circular hole (10) is matched with the first annular groove (6).

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