Metal elbow

Abstract

The utility model provides a metal elbow, which belongs to the technical field of pipeline connectors and comprises an elbow. The number of the butt joint sleeves is two, the two butt joint sleeves are fixedly connected to the two ends of the bent pipe, and internal threads are arranged in the two butt joint sleeves; the transparent observation glass is installed on the circumferential surface of the bent pipe in an embedded mode, the bent pipe is composed of a cast iron pipe, a rubber layer and a zinc coating, the cast iron pipe is formed by casting alloy, the rubber layer wraps the circumferential surface of the bent pipe, the zinc coating is electroplated on the inner wall of the bent pipe, and the bent pipe is used for guiding liquid. The two butt joint sleeves are connected with the pipeline through the internal threads, and the transparent observation glass is used for observing impurities between the inner walls of the elbow, so that when the metal elbow is blocked by large-size impurities, the interior of the blocked metal elbow is directly observed through the transparent observation glass for checking blockage, the metal elbow does not need to be disassembled for checking, and the working efficiency is improved. The daily maintenance difficulty of the metal elbow is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline connectors, and in particular relates to a metal elbow. Background Art

[0002] Metal elbow is a pipe connector, usually made of metal material, used to change the direction of a pipe or connect two pipes. Metal elbow is widely used in various fields, such as construction, chemical industry, petroleum, gas, etc.

[0003] The material of the metal elbow is usually selected according to the use environment and medium. Common metal materials include carbon steel, stainless steel, copper, etc. Stainless steel elbows have good corrosion resistance and are suitable for conveying corrosive media such as acids and alkalis. Copper elbows are suitable for conveying media with high hygiene requirements such as drinking water. During the use of existing metal elbows, when there are too many liquid impurities flowing between the inner walls of the metal elbows and large impurities clog the metal elbows, it is impossible to check the clogged metal elbows through direct observation, which requires the disassembly of the metal elbows for inspection, making the daily maintenance of the metal elbows difficult. For this reason, we propose a metal elbow. Utility Model Content

[0004] The utility model aims to provide a metal elbow, which aims to solve the problem that when there are too many liquid impurities flowing between the inner walls of the metal elbow and the impurities with large volume clog the metal elbow, the clogged metal elbow cannot be checked by direct observation, resulting in the need to disassemble the metal elbow for inspection, making daily maintenance of the metal elbow difficult.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A metal elbow comprises a bent pipe;

[0007] A butt joint sleeve, wherein two butt joint sleeves are provided, the two butt joint sleeves are fixedly connected to the two ends of the elbow, and both butt joint sleeves are provided with internal threads; and

[0008] The transparent observation glass is embedded and installed on the circumferential surface of the bent pipe.

[0009] As a preferred solution of the utility model, the elbow consists of a cast iron pipe, a rubber layer and a galvanized layer, the cast iron pipe is cast from an alloy, the rubber layer is wrapped around the circumferential surface of the elbow, and the galvanized layer is electroplated on the inner wall of the elbow.

[0010] As a preferred solution of the utility model, sealing grooves are provided on the inner walls of the two butt sleeves, and sealing pads are fixedly connected in the two sealing grooves.

[0011] As a preferred solution of the utility model, the circumferential surfaces of the two butt sleeves are fixedly connected with edge sleeves.

[0012] As a preferred solution of the utility model, a plurality of reinforcing ribs of different lengths are fixedly connected to the circumferential surface of the bent pipe, and the plurality of reinforcing ribs are distributed in a circle on the circumferential surface of the bent pipe.

[0013] As a preferred solution of the utility model, shrinkage openings are provided on the inner walls of the two butt sleeves, and the chamfer angles of the two shrinkage openings are 35 degrees.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In this solution, the elbow is used to guide the liquid, the two butt sleeves are connected to the pipes through internal threads, and the transparent observation glass is used to observe the impurities between the inner walls of the elbow. When large impurities clog the metal elbow, the blockage can be directly checked by observing the inside of the blocked metal elbow through the transparent observation glass. There is no need to disassemble the blocked metal elbow for inspection, which reduces the difficulty of daily maintenance of the metal elbow.

[0016] 2. In this scheme, the cast iron pipe is used to provide the main structure, the rubber layer is used to prevent the surface of the cast iron pipe from oxidation and corrosion, and the galvanized layer is used to prevent the inner wall of the cast iron pipe from chemically reacting with the liquid, thereby preventing the inner wall of the cast iron pipe from being oxidized and corroded, thereby increasing the service life of the bent pipe and preventing the bent pipe from being damaged during collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a first-perspective stereoscopic view of a metal elbow of the utility model;

[0019] Figure 2 This is a second perspective stereogram of a metal elbow of the utility model;

[0020] Figure 3 This is a first half cross-sectional view of a metal elbow of the utility model;

[0021] Figure 4 This is a second half cross-sectional view of a metal elbow of the utility model;

[0022] Figure 5 This is a layered structure diagram of a metal elbow bend pipe of the utility model.

[0023] In the figure: 1. bent pipe; 101. cast iron pipe; 102. rubber layer; 103. galvanized layer; 2. butt sleeve; 3. edge sleeve; 4. reinforcing rib; 5. transparent observation glass; 6. shrinkage mouth; 7. sealing groove; 8. sealing gasket. DETAILED DESCRIPTION

[0024] 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.

[0025] Example 1

[0026] Reference Figure 1 - Figure 5 , a metal elbow, comprising:

[0027] Bend 1;

[0028] Butt joint sleeves 2, two butt joint sleeves 2 are provided, the two butt joint sleeves 2 are fixedly connected to the two ends of the elbow 1, and the two butt joint sleeves 2 are both provided with internal threads; and

[0029] The transparent observation glass 5 is installed on the circumferential surface of the curved pipe 1 by embedding.

[0030] In the utility model, the elbow 1 is used to guide the liquid, the two butt sleeves 2 are connected to the pipeline through the internal thread, and the transparent observation glass 5 is used to observe the impurities between the inner walls of the elbow 1. When the metal elbow is blocked by large impurities, the blocked metal elbow can be directly observed through the transparent observation glass 5 for blockage inspection. There is no need to disassemble the blocked metal elbow for inspection, which reduces the difficulty of daily maintenance of the metal elbow.

[0031] The elbow 1 is composed of a cast iron pipe 101 , a rubber layer 102 and a galvanized layer 103 . The cast iron pipe 101 is cast from an alloy, the rubber layer 102 is wrapped around the circumferential surface of the elbow 1 , and the galvanized layer 103 is electroplated on the inner wall of the elbow 1 .

[0032] In the utility model, the cast iron pipe 101 is used to provide a structural main body, the rubber layer 102 is used to prevent the surface of the cast iron pipe 101 from being oxidized and corroded, and the galvanized layer 103 is used to prevent the inner wall of the cast iron pipe 101 from chemically reacting with the liquid, thereby preventing the inner wall of the cast iron pipe 101 from being oxidized and corroded, thereby increasing the service life of the elbow 1 and preventing the elbow 1 from being damaged during a collision.

[0033] A sealing groove 7 is formed on the inner wall of the two butt joint sleeves 2 , and a sealing pad 8 is fixedly connected in the two sealing grooves 7 .

[0034] In the utility model, two sealing grooves 7 are opened to accommodate two sealing pads 8, and the two sealing pads 8 are used to fill the gap between the two butt sleeves 2 and the two pipes to prevent liquid from overflowing from between the two butt sleeves 2 and the two pipes, thereby improving the sealing effect of the metal elbow.

[0035] The circumferential surfaces of the two butt sleeves 2 are fixedly connected with edge sleeves 3 .

[0036] In the utility model, the arrangement of the two edge sleeves 3 facilitates the fixation of the handles to the two butt joint sleeves 2, so as to facilitate the butt jointing of the two butt joint sleeves 2 with the two pipes.

[0037] A plurality of reinforcing ribs 4 of different lengths are fixedly connected to the circumferential surface of the bent pipe 1 , and the plurality of reinforcing ribs 4 are distributed in a circumferential manner on the circumferential surface of the bent pipe 1 .

[0038] In the utility model, the multiple reinforcing ribs 4 are provided to strengthen the structural strength of the elbow 1 and reduce the possibility of the elbow 1 being broken due to the impact of the two pipes.

[0039] The inner walls of the two butt joint sleeves 2 are both provided with shrinkage openings 6 , and the chamfer angles of the two shrinkage openings 6 are 35 degrees.

[0040] In the utility model, the two contraction openings 6 are provided to facilitate the alignment of the elbow 1 with the two pipes, and further guide the flow of liquid between the elbow 1 and the two pipes.

[0041] The working principle of a metal elbow provided by the utility model is:

[0042] Use a wrench to thread the two pipes into the two butt sleeves 2, so that the two sealing pads 8 fill the gap between the butt sleeves 2 and the two pipes to prevent the liquid from overflowing from between the two butt sleeves 2 and the two pipes, thereby improving the sealing effect of the metal elbow. The two contraction ports 6 correspond to the two pipes, so that the elbow 1 guides the liquid. The transparent observation glass 5 is used to observe the impurities between the inner walls of the elbow 1, which is convenient for directly observing the blocked metal elbow through the transparent observation glass 5 when the metal elbow is blocked by large impurities. There is no need to disassemble the blocked metal elbow for inspection, thereby reducing the difficulty of daily maintenance of the metal elbow.

[0043] The cast iron pipe 101 is used to provide a structural main body, the rubber layer 102 is used to prevent the surface of the cast iron pipe 101 from oxidation corrosion, and the galvanized layer 103 is used to prevent the inner wall of the cast iron pipe 101 from chemically reacting with the liquid, preventing the inner wall of the cast iron pipe 101 from being oxidized and corroded, thereby increasing the service life of the elbow 1 and preventing the elbow 1 from being damaged during collision.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A metal elbow, characterized in that: include; Bend pipe (1); A butt joint sleeve (2), wherein two butt joint sleeves (2) are provided, the two butt joint sleeves (2) are fixedly connected to the two ends of the elbow (1), and both butt joint sleeves (2) are provided with internal threads; and A transparent observation glass (5) is installed on the circumferential surface of the curved pipe (1) by embedding.

2. A metal elbow according to claim 1, characterized in that: The bent pipe (1) is composed of a cast iron pipe (101), a rubber layer (102) and a galvanized layer (103); the cast iron pipe (101) is made of alloy casting, the rubber layer (102) is wrapped around the circumferential surface of the bent pipe (1), and the galvanized layer (103) is electroplated on the inner wall of the bent pipe (1).

3. A metal elbow according to claim 2, characterized in that: A sealing groove (7) is provided on the inner wall of the two butt joint sleeves (2), and a sealing pad (8) is fixedly connected in the two sealing grooves (7).

4. A metal elbow according to claim 3, characterized in that: The circumferential surfaces of the two butt sleeves (2) are both fixedly connected with edge sleeves (3).

5. A metal elbow according to claim 4, characterized in that: A plurality of reinforcing ribs (4) of different lengths are fixedly connected to the circumferential surface of the curved pipe (1), and the plurality of reinforcing ribs (4) are distributed in a circular pattern on the circumferential surface of the curved pipe (1).

6. A metal elbow according to claim 5, characterized in that: The inner walls of the two butt joint sleeves (2) are both provided with shrinkage openings (6), and the chamfers of the two shrinkage openings (6) are 35 degrees.

Images