Wear-resistant composite bent pipe for mining

Abstract

The utility model discloses a wear-resistant composite elbow for mining, which comprises a composite elbow, a fastening bolt and a nut, the composite elbow is provided with a limiting mechanism, the limiting mechanism comprises a limiting ring which is in interference fit with the outer surface of the composite elbow, six stepped holes are annularly and uniformly formed in the limiting ring, and three clamping grooves are also equidistantly formed in the limiting ring. By means of the structural design of the limiting ring, the stepped holes and the limiting assemblies, after the fastening bolt and the nut are used for being connected with the composite bent pipe and the connecting pipe in a matched mode, limiting of the nut can be achieved through the limiting groove which is formed in the limiting block and is tightly matched with the nut; even if the bent pipe is vibrated and impacted for a long time in the mining process, the limiting block can keep tight limiting of the nut, the connection stability of the fastening bolt and the nut is ensured, and therefore the connection stability and safety of a whole pipeline system are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite pipe bends, in particular to a wear-resistant composite pipe bend used in mining. Background Art

[0002] Composite elbow is a kind of elbow made of multiple materials or structures. It has a wide range of applications in the industrial field. Specifically, composite elbow is mainly composed of pipe body, elbow and flange. In the field of mining, composite elbow is a key component and is widely used to transport various fluid media. When composite elbow is connected to other pipelines, the flange on the elbow is usually aligned with the flange on other pipelines, and then bolts and nuts are used to install and fix it.

[0003] However, during mining operations, due to the long-term operation of the equipment, the elbows are often subjected to greater vibration and impact. Long-term vibration and impact will cause the friction between the bolts and the nuts to gradually decrease, resulting in the loosening of the nuts, which in turn affects the stability and safety of the entire pipeline system. Therefore, a wear-resistant composite elbow is proposed for mining in response to the above situation. Utility Model Content

[0004] The utility model aims to solve the disadvantages in the prior art that the connection of the elbow pipe is prone to loosening of the nut under long-term vibration and impact, affecting the stability and safety of the entire pipeline system, and proposes a wear-resistant composite elbow pipe for mining.

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

[0006] A wear-resistant composite pipe bend used in mining comprises a composite pipe bend, a fastening bolt and a nut. A limiting mechanism is arranged on the composite pipe bend. The limiting mechanism comprises a limiting ring which is interference fit on the outer surface of the composite pipe bend. Six stepped holes are evenly arranged in a ring shape on the limiting ring. Three slots are evenly arranged on the limiting ring. A limiting component is arranged in each stepped hole.

[0007] The limit assembly includes a step rod arranged in the step hole, one end of the step rod passes through the step rod and is connected to a connecting block, a spring is sleeved on the outer wall of the step rod located in the step hole, a limit block is arranged at the end of the step rod away from the connecting block, and the limit block is respectively provided with an annular groove cooperating with the end of the fastening bolt and a limit groove cooperating with the nut.

[0008] A driving ring is commonly arranged on the six connection blocks, and three abutment blocks are evenly arranged on the outer surface of the driving ring close to the limiting mechanism.

[0009] Preferably, a flange is welded on the composite elbow, and the composite elbow is connected to the connecting pipe by fastening bolts and nuts.

[0010] Preferably, the drive ring is clearance-matched with the composite elbow, a connecting piece is provided on the drive ring, and the abutment block is mounted on the drive ring via the connecting piece.

[0011] Preferably, the connecting member comprises two short plates fixedly connected to the outer surface of the driving ring, short shafts are arranged on the two short plates, and the abutment block is clearance-matched with the short shafts.

[0012] Preferably, the size of the abutment block matches the card slot.

[0013] Preferably, both the outer wall and the inner wall of the composite elbow are coated with a wear-resistant coating.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model adopts the structural design of the limit ring, the stepped hole and the limit assembly. After the composite elbow and the connecting pipe are connected by the fastening bolts and the nuts, the nut can be limited by the limit grooves on the limit block that are closely matched with the nuts. Even if the elbow is subjected to vibration and impact for a long time during mining, the limit block can maintain a tight limit on the nut, ensuring the stability of the connection between the fastening bolts and the nuts, thereby improving the connection stability and safety of the entire pipeline system.

[0016] 2. The utility model adopts the structural design of the card slot, the resistance block and the connection pipe. When connecting the composite bent pipe and the connecting pipe, the resistance block can be pulled and then rotated to align with the card slot and insert into the card slot. Then, by realizing the resistance limit of the resistance block, the connecting block can drive the limit slot to move away from the flange, thereby providing convenience for installing the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a composite elbow;

[0018] Figure 2 It is a structural schematic diagram of the cooperation between the composite elbow and the connecting pipe;

[0019] Figure 3 It is a structural schematic diagram of the limiting mechanism;

[0020] Figure 4 It is a structural schematic diagram of the limit assembly;

[0021] Figure 5 Schematic diagram of the structure of the drive ring.

[0022] In the figure: 1. compound bent pipe; 2. connecting pipe; 3. flange; 4. fastening bolt; 401. nut; 5. limiting mechanism; 501. limiting ring; 502. stepped hole; 503. slot; 504. limiting assembly; 5040. stepped rod; 5041. connecting block; 5042. spring; 5043. limiting block; 5044. annular groove; 5045. limiting groove; 6. driving ring; 601. abutment block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-5 A wear-resistant composite elbow pipe for mining includes a composite elbow pipe 1, a fastening bolt 4 and a nut 401. In this embodiment, Figure 1 and Figure 2 As shown, the outer wall and the inner wall of the composite elbow 1 are coated with a wear-resistant coating, and the wear-resistant coating is composed of composite materials such as epoxy resin, wear-resistant ceramic balls and superhard crystals. A flange 3 is welded on the composite elbow 1, and the composite elbow 1 is connected to the connecting pipe 2 through a fastening bolt 4 and a nut 401. Specifically, the connecting pipe 2 is connected to relevant equipment during mining, such as drainage equipment during mining, such as the output end of a water pump. When connecting the composite elbow 1 and the connecting pipe 2, first align the flanges 3 connecting the composite elbow 1 and the connecting pipe 2, then pass the fastening bolt 4 through the hole on the flange 3 at one end of the connecting pipe 2, and at the same time, thread the nut 401 at the corresponding end.

[0025] A limiting mechanism 5 is provided on the composite elbow 1, and the limiting mechanism 5 includes a limiting ring 501 which is interference fit on the outer surface of the composite elbow 1, and six stepped holes 502 are evenly opened in a ring shape on the limiting ring 501. Specifically, the six stepped holes 502 correspond to the connecting holes on the flange 3 one by one, and three slots 503 are evenly opened on the limiting ring 501, and a limiting component 504 is arranged in each stepped hole 502.

[0026] The limiting assembly 504 includes a step rod 5040 arranged in the step hole 502, one end of the step rod 5040 passes through the step rod 5040 and is connected to a connecting block 5041, the step rod 5040 is provided with a spring 5042 on the outer wall of the step rod 5040 located in the step hole 502, and a limiting block 5043 is provided at the end of the step rod 5040 away from the connecting block 5041, and the limiting block 5043 is respectively provided with an annular groove 5044 that cooperates with the end of the fastening bolt 4 and a limiting groove 5045 that cooperates with the nut 401.

[0027] Specifically, after all the fastening bolts 4 and nuts 401 are installed and matched, the driving ring 6 is pulled to drive the connecting block 5041 to move, and then the abutment block 601 is flipped to keep it in a vertical state. After the driving ring 6 is loosened, the step rod 5040 moves toward one end of the flange 3 under the reset rebound of the spring 5042, and then the limit block 5043 moves toward one end of the flange 3, so that the annular groove 5044 is in conflict with the end of the fastening bolt 4, so that the nut 401 enters the limit groove 5045, that is, the nut 401 can be limited by the limit groove 5045 that is tightly matched with the nut 401 opened on the limit block 5043. Even if the elbow is subjected to vibration and impact for a long time during mining, the limit block 5043 can maintain a tight limit on the nut 401, ensuring the stability of the connection between the fastening bolt 4 and the nut 401, thereby improving the connection stability and safety of the entire pipeline system.

[0028] The six connecting blocks 5041 are commonly provided with a driving ring 6. The outer surface of the driving ring 6 close to the limiting mechanism 5 is evenly provided with three abutment blocks 601. The size of the abutment blocks 601 is adapted to the card slot 503. In this embodiment, Figure 1 and Figure 2 As shown, the driving ring 6 is loosely matched with the composite elbow 1, a connecting piece is provided on the driving ring 6, and the resistance block 601 is installed on the driving ring 6 through the connecting piece. The connecting piece includes two short plates fixedly connected to the outer surface of the driving ring 6, and short shafts are provided on the two short plates. The resistance block 601 is loosely matched with the short shafts. Specifically, when connecting the composite elbow 1 and the connecting pipe 2, the resistance block 601 can be pulled and then 602 can be rotated so that 602 is aligned with the slot 503 and inserted into the slot 503, and then the resistance block 601 is limited by 602, so that the connecting block 5041 can drive the limiting slot 5045 to move away from the flange 3, thereby providing convenience for installing the nut 401.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wear-resistant composite elbow pipe for use in mining, comprising a composite elbow pipe (1), a fastening bolt (4) and a nut (401), characterized in that: A limiting mechanism (5) is provided on the composite curved pipe (1), the limiting mechanism (5) comprising a limiting ring (501) which is interference-fitted on the outer surface of the composite curved pipe (1), the limiting ring (501) being provided with six stepped holes (502) evenly arranged in an annular shape, the limiting ring (501) also being provided with three slots (503) at equal intervals, and a limiting component (504) being arranged in each of the stepped holes (502); The limiting assembly (504) comprises a step rod (5040) arranged in the step hole (502), one end of the step rod (5040) passes through the step rod (5040) and is connected to a connecting block (5041), a spring (5042) is sleeved on the outer wall of the step rod (5040) located in the step hole (502), a limiting block (5043) is arranged at the end of the step rod (5040) away from the connecting block (5041), and the limiting block (5043) is respectively provided with an annular groove (5044) cooperating with the end of the fastening bolt (4) and a limiting groove (5045) cooperating with the nut (401); A driving ring (6) is commonly arranged on the six connecting blocks (5041), and three abutment blocks (601) are evenly arranged on the outer surface of the driving ring (6) close to the limiting mechanism (5).

2. The wear-resistant composite elbow pipe for mining according to claim 1 is characterized in that: A flange (3) is welded on the composite bent pipe (1), and the composite bent pipe (1) is connected to a connecting pipe (2) via a fastening bolt (4) and a matching nut (401).

3. The wear-resistant composite elbow pipe for mining according to claim 1 is characterized in that: The driving ring (6) is clearance-matched with the composite curved pipe (1); a connecting piece is provided on the driving ring (6); and the abutment block (601) is mounted on the driving ring (6) via the connecting piece.

4. The wear-resistant composite elbow pipe for mining according to claim 3 is characterized in that: The connecting member comprises two short plates fixedly connected to the outer surface of the driving ring (6), short shafts are arranged on the two short plates, and the abutment block (601) is loosely matched with the short shafts.

5. The wear-resistant composite elbow pipe for mining according to claim 1 is characterized in that: The size of the abutment block (601) is adapted to the card slot (503).

6. The wear-resistant composite elbow pipe for mining according to claim 1 is characterized in that: The outer wall and the inner wall of the composite curved pipe (1) are both coated with a wear-resistant coating.

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