Nodular cast iron pipe fitting elbow joint suitable for complex terrains

Abstract

The utility model discloses a nodular cast iron pipe fitting elbow joint suitable for complex terrains, which comprises an elbow joint, a pipeline, locking rings and a connecting ring, two ends of the elbow joint are respectively connected with the pipeline through the locking rings, and the locking rings are fixed on the elbow joint through mounting sleeves and locking screws. The connecting ring is connected with the connecting rod in a hanging mode through the hanging groove and matched with the connecting sleeve on the pipeline in a clamped mode, and the connecting rod tensions the connecting ring and the locking ring through the adjusting sleeve and the nut so as to achieve rapid locking. The limiting groove is clamped with a clamping rib on the outer side of the connecting sleeve to limit rotation of the connecting ring, a check ring is arranged on the outer side of the connecting sleeve and used for limiting longitudinal sliding of the connecting ring, the two ends of the bent connector are in sealing fit with a sealing ring through clamping rings to improve the sealing performance, and a reinforced fiber layer is embedded in the sealing ring to enhance the pressure resistance. The bent connector is simple in structure and convenient to install, can achieve rapid locking and efficient sealing of the bent connector and a pipeline, meets the use requirements under the complex terrain environment, and solves the problems that a traditional pipe fitting is loose in connection and poor in sealing performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of conveying pipeline, especially to a nodal pipe fitting of nodular cast iron pipe suitable for complex terrain. BACKGROUND

[0002] In water delivery, sewage and other liquid transportation systems, nodular cast iron pipe fittings are widely used in pipeline laying in complex terrain due to their excellent strength, toughness and corrosion resistance. However, in the actual pipeline laying process, especially when facing complex terrain, it is often necessary to use a bend joint to adapt to the bending changes of the terrain and achieve flexible connection of the pipeline.

[0003] The connection of the existing bend joint and the pipeline usually requires the cooperation of multiple tools and has a high requirement for the operation proficiency of the construction personnel, resulting in low installation efficiency, especially in complex terrain conditions, which is more time-consuming and labor-intensive. At the same time, the fixing method of many bend joints is prone to looseness or unstable connection when subjected to terrain vibration or internal medium flow impact, affecting the reliability of the pipeline system. SUMMARY

[0004] The utility model discloses a nodal pipe fitting of nodular cast iron pipe suitable for complex terrain to solve the problems of inconvenient installation and unstable locking.

[0005] To solve the above technical problems, the utility model is realized by the following technical scheme: a nodal pipe fitting of nodular cast iron pipe suitable for complex terrain, comprising a bend joint, both ends of the bend joint are sleeved with a pipeline, both end head parts of the bend joint are detachably installed with a lock ring, a plurality of uniformly arranged connecting rods are rotatably installed on the edge of the lock ring, one end of the pipeline connected with the bend joint is detachably installed with a connecting ring, and the other end of the connecting rod away from the lock ring is hung with the connecting ring.

[0006] The outer side edge of the connecting ring is provided with a plurality of uniformly arranged hanging grooves, one end of the connecting rod is threadedly sleeved with an adjusting sleeve, one end of the adjusting sleeve penetrating through the hanging groove is fixed with a hanging table, and the other end of the adjusting sleeve is fixed with a nut.

[0007] As a preferred scheme, the side of the lock ring away from the pipeline is fixed with a mounting sleeve, and a plurality of locking screws are threadedly installed on the outer side of the mounting sleeve.

[0008] As a preferred scheme, a plurality of open grooves are provided on the outer side of the lock ring.

[0009] The other end of the connecting rod away from the adjusting sleeve is fixed with a rotating block, and the rotating block is rotatably installed in the open groove through a rotating shaft.

[0010] As a preferred scheme, the edge of the side of the connecting ring away from the bend joint is fixed with a stop edge, and a plurality of uniformly arranged limiting grooves are provided in the inner hole of the connecting ring.

[0011] As a preferred solution, the end of the pipeline facing the elbow joint is fixed with a connecting sleeve;

[0012] The outer side of the connecting sleeve is fixed with uniformly arranged clamping ribs, and the outer side of the connecting sleeve is fixed with a retaining ring near the end of the elbow joint.

[0013] As a preferred solution, the two ends of the elbow joint are fixed with clamping rings, and the outer side of the clamping ring is sleeved with a sealing ring, and the inner side of the sealing ring is provided with a sleeve groove matched with the clamping ring.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The utility model discloses a connecting ring and a lock ring structure, realizing the quick butt joint and locking between the elbow joint and the pipeline. The connecting ring is matched with the connecting rod through the hanging groove, and the connecting rod is tightened by the adjusting sleeve and the nut, so that the fixation of the elbow joint and the pipeline after connection is more reliable, avoiding the leakage problem caused by loose connection, and the sealing ring is arranged to ensure the sealing performance of the pipeline and the pipe joint.

[0016] The connecting rod on the lock ring is hung on the connecting ring through the rotating block on the lock ring, not only simplifying the installation process, but also ensuring the flexibility and reliability of each component under complex terrain conditions, improving the efficiency of the connection and installation between the pipeline and the pipe joint, and making the pipeline installation more convenient and fast.

[0017] In summary, the utility model can adapt to complex terrain, provide a reliable pipeline connection scheme, solve the deficiencies of traditional pipe fittings in installation efficiency, connection stability and sealing performance through optimized structure design, and greatly improve the service life and safety of the pipeline system. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the utility model;

[0019] Figure 2 It is the lock ring schematic diagram of the utility model;

[0020] Figure 3 It is the connecting ring schematic diagram of the utility model;

[0021] Figure 4 It is the pipeline schematic diagram of the utility model;

[0022] Figure 5 It is the elbow joint schematic diagram of the utility model.

[0023] In the figure: 1, pipeline; 11, connecting sleeve; 12, retaining ring; 13, clamping rib; 2, connecting ring; 21, hanging groove; 22, retaining edge; 23, limiting groove; 3, connecting rod; 31, adjusting sleeve; 32, hanging table; 33, nut; 34, rotating block; 4, lock ring; 41, locking screw; 42, mounting sleeve; 5, elbow; 51, clamping ring; 52, sealing ring; 53, sleeve groove. DETAILED DESCRIPTION

[0024] As Figure 1 shown, a nodular cast iron pipe fitting elbow suitable for complex terrain, comprising an elbow 5, both ends of the elbow 5 are sleeved with a pipeline 1, both end parts of the elbow 5 are detachably installed with a lock ring 4, the edges of the lock ring 4 are rotatably installed with a plurality of evenly arranged connecting rods 3 through bearing connection, the connecting rods 3 are made of stainless steel, having good corrosion resistance; the end of the pipeline 1 connected with the elbow 5 is detachably installed with a connecting ring 2 through clamping, the connecting ring 2 is made of high-strength aluminum alloy, and its outer surface is subjected to anodic oxidation treatment to enhance durability; the end of the connecting rod 3 away from the lock ring 4 is hung on the hanging groove 21 on the connecting ring 2 through the hanging table 32, and reliable fixation is achieved through threaded connection.

[0025] As Figure 2 and Figure 3 shown, the outer edge of the connecting ring 2 is provided with evenly arranged hanging grooves 21, one end of the connecting rod 3 is sleeved with an adjusting sleeve 31 through a threaded structure, the adjusting sleeve 31 is made of carbon steel, and a rust-proof coating is sprayed on its surface to prolong service life; one end of the adjusting sleeve 31 fixedly connected with the hanging table 32 passes through the hanging groove 21, and the other end of the adjusting sleeve 31 is fixedly provided with a nut 33, which is hexagonal in shape to facilitate tool adjustment.

[0026] As Figure 2 shown, the side of the lock ring 4 away from the pipeline 1 is fixedly provided with a mounting sleeve 42, four locking screws 41 are threadedly installed on the outer side of the mounting sleeve 42, and the lock ring 4 is fixed by the locking screws 41 in cooperation with the mounting sleeve 42.

[0027] As Figure 2 shown, the outer side of the lock ring 4 is uniformly provided with an open slot, the end of the connecting rod 3 away from the adjusting sleeve 31 is fixedly provided with a rotating block 34, and the rotating block 34 is rotatably installed in the open slot through a rotating shaft, and the rotating block 34 facilitates the rotation of the connecting rod 3 to be hung on the connecting ring 2.

[0028] As Figure 3 shown, the edge of the side of the connecting ring 2 away from the elbow 5 is fixedly provided with a retaining edge 22, four limiting grooves 23 are uniformly provided in the inner hole of the connecting ring 2, and the limiting grooves 23 are used to cooperate with the clamping ribs 13 on the pipeline 1 to achieve precise positioning and limit the rotation of the connecting ring 2 on the connecting sleeve 11.

[0029] As Figure 4 shown, the pipe 1 facing the one end of the elbow joint 5 is fixed with a connecting sleeve 11 through a welding process, the connecting sleeve 11 is made of nodular cast iron, the outer surface is treated with anticorrosion to adapt to complex environment; the outer side of the connecting sleeve 11 is uniformly fixed with a clamping rib 13 for cooperating with the limiting groove 23 of the connecting ring 2; the outer side of the connecting sleeve 11 is fixed with a retaining ring 12 near the one end of the elbow joint 5 for limiting the longitudinal sliding of the connecting ring 2.

[0030] As Figure 5 shown, the two ends of the elbow joint 5 are fixed with a clamping ring 51 through a tight fit mode, the outer side of the clamping ring 51 is sleeved with a sealing ring 52, the sealing ring 52 is made of high-temperature-resistant silicone and embedded with a reinforcing fiber layer to improve the compression resistance; the inner side of the sealing ring 52 is provided with a sleeve groove 53 matched with the clamping ring 51 to ensure the sealing performance and improve the stability of the connection.

[0031] In this embodiment, when laying the pipe 1, the connecting ring 2 is sleeved at the position of the connecting sleeve 11 of the pipe 1 and clamped and limited by the limiting groove 23 and the clamping rib 13 to prevent the self-rotation of the connecting ring 2, and the retaining ring 12 on the connecting sleeve 11 is used for limiting the sleeving of the connecting ring 2;

[0032] The lock ring 4 is sleeved on the elbow joint 5 by the mounting sleeve 42, and then the lock screw 41 is screwed on the elbow joint 5 to fix the lock ring 4;

[0033] When the elbow joint 5 and the pipe 1 are butt-jointed, the connecting sleeve 11 on the pipe 1 is sleeved with the elbow joint 5, at this time the connecting rod 3 on the lock ring 4 is rotated and hung on the connecting ring 2, thereby completing the quick butt-jointing and locking of the elbow joint 5 and the pipe 1;

[0034] Then the connecting rod 3 is hung in the hanging groove 21 of the connecting ring 2 by the adjusting sleeve 31 and the hanging table 32, and the adjusting sleeve 31 is screwed at the nut 33 by the wrench sleeve to tighten the connecting rod 3, thereby completing the quick locking and fixing after the elbow joint 5 and the pipe 1 are sleeved, and completing the more efficient and convenient laying of the pipe 1.

[0035] The above is the preferred embodiment of the utility model, the skilled in the art of the utility model can also change and modify the above embodiment, therefore, the utility model is not limited to the specific embodiments described above, any obvious improvement, replacement or modification made by the skilled in the art on the basis of the utility model belongs to the protection scope of the utility model.

Claims

1. A nodal bend for nodal pipe fittings of nodular cast iron suitable for complex topography, comprising a nodal bend (5) having a pipe (1) fitted on each end of the nodal bend (5), characterized in that: Both end parts of the elbow joint (5) are detachably installed with a locking ring (4), the edge of the locking ring (4) is rotatably installed with a plurality of uniformly arranged connecting rods (3), one end of the pipeline (1) connected with the elbow joint (5) is detachably installed with a connecting ring (2), one end of the connecting rod (3) away from the locking ring (4) is hung with the connecting ring (2). The outer side edge of the connecting ring (2) is provided with a plurality of uniformly arranged hanging grooves (21), one end of the connecting rod (3) is threadedly sleeved with an adjusting sleeve (31), one end of the adjusting sleeve (31) is fixedly provided with a hanging table (32) penetrating through the hanging groove (21), and the other end of the adjusting sleeve (31) is fixedly provided with a nut (33).

2. The nodular cast iron pipe fitting elbow joint suitable for complex terrain according to claim 1, characterized in that: The side of the locking ring (4) away from the pipeline (1) is fixedly provided with a mounting sleeve (42), and the outer side of the mounting sleeve (42) is threadedly installed with a plurality of locking screws (41).

3. The nodular cast iron pipe fitting elbow joint suitable for complex terrain according to claim 2, characterized in that: The outer side of the locking ring (4) is provided with a plurality of opening grooves; One end of the connecting rod (3) away from the adjusting sleeve (31) is fixedly provided with a rotating block (34), and the rotating block (34) is rotatably installed in the opening groove through a rotating shaft.

4. The nodular cast iron pipe fitting elbow joint suitable for complex terrain according to claim 1, characterized in that: The edge of the side of the connecting ring (2) away from the elbow joint (5) is fixedly provided with a stop edge (22), and a plurality of uniformly arranged limiting grooves (23) are formed in the inner hole of the connecting ring (2).

5. The nodular cast iron pipe fitting elbow joint suitable for complex terrain according to claim 4, characterized in that: One end of the pipeline (1) facing the elbow joint (5) is fixedly provided with a connecting sleeve (11). The outer side of the connecting sleeve (11) is fixedly provided with a plurality of uniformly arranged clamping ribs (13), and one end of the outer side of the connecting sleeve (11) close to the elbow joint (5) is fixedly provided with a stop ring (12).

6. The nodular cast iron pipe fitting elbow joint suitable for complex terrain according to claim 5, characterized in that: Both ends of the elbow joint (5) are fixedly provided with clamping rings (51), and the outer side of the clamping ring (51) is sleeved with a sealing ring (52), and the inner side of the sealing ring (52) is provided with a sleeve groove (53) matched with the clamping ring (51).

Images