Bimetal composite high-pressure-resistant elbow pipe fitting

Abstract

The utility model relates to the technical field of elbow pipe fittings, and discloses a bimetal composite high-pressure-resistant elbow pipe fitting which comprises an elbow pipe body, two straight pipe bodies and two anti-falling devices, the elbow pipe body comprises a metal elbow pipe, compression-resistant wear-resistant ceramic is fixedly arranged in the metal elbow pipe, and the two straight pipe bodies are connected with the two anti-falling devices. First stop blocks are fixedly arranged at the two ends of the outer wall of the metal bent pipe correspondingly, second stop blocks are fixedly arranged at the positions, close to one side, of the two ends of the outer wall of the metal bent pipe correspondingly, internal threaded holes are formed in the two ends of the metal bent pipe correspondingly, and hollow columns are fixedly arranged at the two ends of the metal bent pipe in the internal threaded holes. First sealing rings are fixedly arranged between the inner threaded holes and the hollow columns at the two ends of the metal bent pipes, the two straight pipe bodies comprise metal straight pipes, and pipe threads are fixedly arranged on one sides of the outer walls of the metal straight pipes. According to the utility model, the service life can be prolonged, the leakage risk of a connecting part is reduced, and safety accidents caused by breakage are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to elbow pipe technology field especially relates to a bimetallic composite high pressure resistant elbow pipe fitting. BACKGROUND

[0002] Elbow pipe fitting is the key connecting component for changing flow direction in pipeline system, directly affects the flexibility and functionality of the system. And bimetallic composite high pressure resistant elbow pipe fitting is through special process to composite two kinds of metal materials, compared with pure stainless steel or carbon steel pipe fitting, it can greatly prolong the service life, reduce maintenance cost.

[0003] However, in the mining, mineral processing, cement and construction industry, the transport medium often contains high hardness particles or sharp particles, which causes serious impact and wear on the inner wall of the pipeline, and frequent maintenance is required. In addition, if the straight pipe and elbow connection are loose or cracked, it will not only increase the safety risk, but also significantly increase the operation and maintenance cost.

[0004] Therefore, the application provides a bimetallic composite high pressure resistant elbow pipe fitting to solve the problems raised in the background art. UTILITY MODEL CONTENT

[0005] The utility model discloses a bimetallic composite high pressure resistant elbow pipe fitting to solve the problems raised in the background art, which can prolong the service life, reduce the leakage risk of the connecting part, and reduce the safety accidents caused by fracture.

[0006] To achieve the above object, the utility model provides the following technical scheme.

[0007] A bimetallic composite high pressure resistant elbow pipe fitting, comprising an elbow pipe body, two straight pipe bodies and two anti-falling devices, the elbow pipe body comprises a metal elbow pipe, the metal elbow pipe is internally fixedly provided with a pressure-resistant wear-resistant ceramic, the outer wall of the metal elbow pipe is fixedly provided with a first blocking block at both ends, the outer wall of the metal elbow pipe is fixedly provided with a second blocking block at both ends on one side, both ends of the metal elbow pipe are provided with an internal thread hole, both ends of the metal elbow pipe are fixedly provided with a hollow column in the internal thread hole, and a first sealing ring is fixedly arranged between the internal thread hole and the hollow column at both ends of the metal elbow pipe.

[0008] Both the straight pipe bodies comprise a metal straight pipe, the metal straight pipe is fixedly provided with a pipe thread on one side of the outer wall, the metal straight pipe is fixedly provided with a second sealing ring on the outer wall on one side close to the pipe thread, and the metal straight pipe is fixedly provided with a third sealing ring on the outer wall on one side close to the inner wall of the pipe thread.

[0009] Both the anti-falling devices comprise an anti-falling base and an anti-falling ring, the outer wall of the anti-falling base is fixedly provided with a plurality of positioning bases, the inner wall of the anti-falling ring is fixedly provided with a limiting block at the other end, and the inner wall of the anti-falling ring is fixedly provided with a plurality of limiting blocks at one end.

[0010] Further, the outer wall upper end surface of the two internal thread holes is tightly attached to the second sealing ring to form a sealing connection.

[0011] Further, the upper end surface of the two hollow columns is tightly attached to the third sealing ring to form a sealing connection.

[0012] Further, the two pipe threads are threadedly matched with the internal thread holes to enable the metal straight pipe to be installed on one side of the metal elbow pipe.

[0013] Further, the two anti-falling bases are fixedly arranged on the outer wall of the metal straight pipe at one side.

[0014] Further, the outer wall upper end surface of the two pipe threads is tightly attached to the first sealing ring to form a sealing connection.

[0015] Further, the two anti-falling rings are slidingly arranged at the outer wall of the metal elbow pipe at two ends, and the limiting block is slidingly arranged between the first blocking block and the second blocking block.

[0016] The utility model has the advantages of the following beneficial effects:

[0017] 1. The utility model discloses a double-metal composite high-pressure-resistant elbow pipe fitting, the inner wall of the metal elbow pipe is lined with pressure-resistant wear-resistant ceramic, which has ultrahigh hardness and chemical inertness and can resist particle erosion and medium corrosion. In addition, the interface is a three-layer structure and is provided with a first sealing ring, a second sealing ring and a third sealing ring, which can effectively prevent leakage caused by loosening of the connection.

[0018] 2. The utility model discloses a double-metal composite high-pressure-resistant elbow pipe fitting, if the connection is broken, the internal pressure will make the elbow pipe body separate from the pipeline, not only causing medium leakage, but also possibly causing deformation of the adjacent straight pipe body due to impact force. During installation, the straight pipe body and the elbow pipe body are first aligned and connected, then the anti-falling ring is slid and rotated, the limiting block is clamped into the groove of the positioning base, and additional loss can be avoided. DRAWINGS

[0019] Figure 1 It is the overall axonometric view of the utility model;

[0020] Figure 2 It is the connection view of the straight pipe body and the elbow pipe body of the utility model;

[0021] Figure 3 It is the internal axonometric view of the elbow pipe body of the utility model;

[0022] Figure 4 It is the structure schematic view of bend pipe body connecting place of the utility model;

[0023] Figure 5 It is the axial measurement schematic view of straight pipe body of the utility model;

[0024] Figure 6 It is the axial measurement schematic view of inside straight pipe body of the utility model;

[0025] Figure 7 It is the axial measurement schematic view of second sealing ring of the utility model;

[0026] Figure 8 It is the axial measurement schematic view of anti-falling device of the utility model.

[0027] Legend:

[0028] 1, bend pipe body;2, straight pipe body;3, anti-falling device;101, metal bend pipe;102, pressure-resistant wear-resistant ceramic;103, first blocking;104, second blocking;105, internal thread hole;106, first sealing ring;107, hollow column;201, metal straight pipe;202, pipe thread;203, second sealing ring;204, third sealing ring;301, anti-falling base;302, positioning base;303, anti-falling ring;304, limiting block;305, positioning block. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0030] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4The utility model provides an embodiment: a kind of bimetallic composite high-pressure resistant elbow pipe fitting, including elbow pipe body 1, two straight pipe bodies 2 and two anti-falling devices 3, elbow pipe body 1 includes metal elbow pipe 101, anti-pressure wear-resistant ceramic 102 is fixedly arranged in metal elbow pipe 101, the outer wall both ends of metal elbow pipe 101 are fixedly provided with first blocking block 103, the outer wall both ends of metal elbow pipe 101 are fixedly provided with second blocking block 104 by one side, the both ends of metal elbow pipe 101 are provided with internal thread hole 105, hollow column 107 is fixedly arranged in internal thread hole 105 of the both ends of metal elbow pipe 101, first sealing ring 106 is fixedly arranged in the intermediate of internal thread hole 105 and hollow column 107 of the both ends of metal elbow pipe 101.

[0031] Specifically, the anti-pressure wear-resistant ceramic 102 lined in the metal elbow pipe 101 can effectively resist particle erosion and medium corrosion, and the limiting block 304 slides between the first blocking block 103 and the second blocking block 104 on the outer wall of the metal elbow pipe 101, which can effectively prevent the anti-falling ring 303 from separating from the metal elbow pipe 101.

[0032] Referring to Figure 2 , Figure 5 , Figure 6 , two straight pipe bodies 2 all include metal straight pipe 201, metal straight pipe 201 outer wall one side is fixedly provided with pipe thread 202, metal straight pipe 201 outer wall one side is fixedly provided with second sealing ring 203 near the outer wall of pipe thread 202, metal straight pipe 201 outer wall one side is fixedly provided with third sealing ring 204 near the inner wall of pipe thread 202, two internal thread holes 105 outer wall upper end surfaces are all tightly attached to form sealed connection with second sealing ring 203, two hollow columns 107 upper end surfaces are all tightly attached to form sealed connection with third sealing ring 204, two pipe threads 202 are all screwed with internal thread hole 105 to make metal straight pipe 201 install on one side of metal elbow pipe 101, two pipe threads 202 outer wall upper end surfaces are all tightly attached to form sealed connection with first sealing ring 106.

[0033] Specifically, the plurality of positioning bases 302 fixedly arranged on the outer wall of the anti-falling base 301 can fix the positioning block 305 in the groove, which can effectively prevent the elbow pipe body 1 from being separated from the track due to impact force, the internal thread hole 105 is screwed with the pipe thread 202, and is simultaneously sealed with the first sealing ring 106, the second sealing ring 203 and the third sealing ring 204, which can effectively prevent leakage.

[0034] Referring to Figure 5 , Figure 7 , Figure 8, two anti-falling devices 3 include anti-falling base 301 and anti-falling ring 303, the outer wall of anti-falling base 301 is fixedly provided with a plurality of positioning bases 302, the inner wall of anti-falling ring 303 is fixedly provided with a limiting block 304 at the other end, the inner wall of anti-falling ring 303 is fixedly provided with a plurality of limiting blocks 305 at one end, the two anti-falling bases 301 are fixedly arranged on the outer wall of the metal straight pipe 201 at one side, and the two anti-falling rings 303 are slidingly arranged on the outer wall of the metal elbow pipe 101 at both ends and the limiting block 304 is slidingly arranged between the first blocking block 103 and the second blocking block 104.

[0035] Specifically, the anti-falling base 301 and the anti-falling ring 303 are slidingly matched, the limiting block 305 is moved into the groove of the positioning base 302 by rotating and moving the anti-falling ring 303, and the limiting block 304 can only slide between the first blocking block 103 and the second blocking block 104, so that the two are pulled by each other, preventing the metal elbow pipe 101 from being broken at the connection with the metal straight pipe 201, and the internal pressure causes the elbow pipe body 1 to be separated from the pipeline, and the adjacent straight pipe body 2 is deformed due to impact force.

[0036] Working principle: first, the straight pipe body 2 is aligned with the elbow pipe body 1 and is connected, then the limiting block 305 is clamped into the groove of the positioning base 302 by sliding and rotating the anti-falling ring 303, which can effectively prevent the metal elbow pipe 101 from being broken at the connection with the metal straight pipe 201, and the internal pressure causes the elbow pipe body 1 to be separated from the pipeline, and the adjacent straight pipe body 2 is deformed due to impact force. The metal elbow pipe 101 is lined with pressure-resistant and wear-resistant ceramic 102, which can effectively resist particle erosion and medium corrosion. The internal threaded hole 105 at the connection between the metal elbow pipe 101 and the metal straight pipe 201 is threadedly connected with the pipe thread 202, and is sealingly connected with the first sealing ring 106, the second sealing ring 203 and the third sealing ring 204, effectively preventing leakage.

[0037] Finally, it should be pointed out that: the above-mentioned only for preferred embodiments of the present application, and does not limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included in the protection scope of the present application.

Claims

1. A double metal composite high pressure resistant elbow pipe fitting comprising an elbow body (1), two straight pipe bodies (2) and two anti-drop devices (3), characterized in that: The elbow body (1) comprises a metal elbow (101), the metal elbow (101) is internally and fixedly provided with a pressure-resistant wear-resistant ceramic (102), the outer wall of the metal elbow (101) is fixedly provided with a first blocking block (103) at both ends, the outer wall of the metal elbow (101) is fixedly provided with a second blocking block (104) at both ends on one side, both ends of the metal elbow (101) are provided with an internal thread hole (105), the metal elbow (101) is fixedly provided with a hollow column (107) in the internal thread hole (105) at both ends, and the metal elbow (101) is fixedly provided with a first sealing ring (106) between the internal thread hole (105) and the hollow column (107) at both ends. Both the straight pipe bodies (2) comprise a metal straight pipe (201), the metal straight pipe (201) is fixedly provided with a pipe thread (202) on one side of the outer wall, the metal straight pipe (201) is fixedly provided with a second sealing ring (203) on one side of the outer wall close to the outer wall of the pipe thread (202), and the metal straight pipe (201) is fixedly provided with a third sealing ring (204) on one side of the outer wall close to the inner wall of the pipe thread (202). Both the anti-falling devices (3) comprise an anti-falling base (301) and an anti-falling ring (303), the anti-falling base (301) is fixedly provided with a plurality of positioning bases (302) on the outer wall, the anti-falling ring (303) is fixedly provided with a limiting block (304) on the inner wall on the other end, and the anti-falling ring (303) is fixedly provided with a plurality of positioning blocks (305) on the inner wall on one end.

2. A double metal composite high pressure elbow pipe fitting according to claim 1, wherein: The outer wall upper end surface of the internal thread hole (105) is tightly attached to the second sealing ring (203) to form a sealed connection.

3. The bimetallic composite high pressure elbow pipe fitting of claim 1, wherein: The upper end surface of the hollow column (107) is tightly attached to the third sealing ring (204) to form a sealed connection.

4. The bimetallic composite high pressure elbow pipe fitting of claim 1, wherein: The pipe thread (202) is screwed with the internal thread hole (105) to enable the metal straight pipe (201) to be installed on one side of the metal elbow (101).

5. The bimetallic composite high pressure elbow pipe fitting of claim 1, wherein: Both the anti-falling bases (301) are fixedly arranged on one side of the outer wall of the metal straight pipe (201).

6. The bimetallic composite high pressure elbow pipe fitting of claim 1, wherein: The outer wall upper end surface of the pipe thread (202) is tightly attached to the first sealing ring (106) to form a sealed connection.

7. The bi-metallic composite high pressure elbow pipe fitting of claim 1, wherein: Both the anti-falling rings (303) are slidingly arranged on the outer wall at both ends of the metal elbow (101), and the limiting block (304) is slidingly arranged between the first blocking block (103) and the second blocking block (104).

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