Quick-assembly wear-resistant filling slurry conveying pipeline

Abstract

The utility model belongs to the field of material conveying pipelines, and discloses a fast-assembly wear-resistant filling slurry conveying pipeline which comprises a plurality of sections of filling pipelines, and every two adjacent sections of filling pipelines are connected through a groove flange and a groove pipe clamp. A pipeline fixing groove is formed in the outer ring face of the groove flange, a socket groove is formed in the end face of one side of the groove flange, and the filling pipeline is fixedly welded to the end face of the groove flange after being inserted into the socket groove. The two end faces of the groove pipe clamp protrude inwards to form protruding edges respectively, the distance between the two protruding edges is the same as the distance between the pipeline fixing grooves in the two groove flanges, and the height of the protruding edges is larger than the depth of the pipeline fixing grooves. The inner walls of the pipelines are hardened, the pipeline ends are connected through the groove flanges, the pipelines are fixed through the groove pipe clamps, and the pipelines are high in machining precision, rapid to disassemble and assemble and good in pressure resistance and abrasion resistance. The device is suitable for conveying slurry media with high abrasiveness, and is particularly suitable for conveying mine tail waste filling slurry.

Description

Technical Field

[0001] The utility model relates to the field of material conveying pipelines, in particular to a quick-install wear-resistant filling slurry conveying pipeline. Background Art

[0002] After mining, high-concentration filling materials mainly composed of tailings need to be transported through pipelines to fill the mine. However, the coarse tailings in the filling slurry will wash the pipe wall at high speed, causing serious wear of the pipe wall, especially at the bends. The tailings particles collide with the pipe wall at a large incident angle, causing more serious wear and more likely to cause pipe bursts and grouting accidents. Therefore, the pipe is required to have high wear resistance and durability. Due to the wide distribution of the space to be filled in the mine, the filling pipe needs to be frequently moved and connected and installed. The traditional flange or welding connection method has high installation technical requirements, high construction labor intensity, long removal and installation construction period, poor reusability of welded pipe removal, no flexibility of flange-connected pipes, and high installation precision requirements. Utility Model Content

[0003] In view of the above problems, the utility model provides a quick-install wear-resistant filling slurry conveying pipeline. The inner wall of the pipeline is hardened, groove flanges are used at the pipeline ends, and groove pipe clamps are used to fix the pipelines. It has high processing accuracy, low processing difficulty, quick and easy dismantling and installation, and good wear resistance.

[0004] The technical solution of the utility model is as follows:

[0005] A quick-install wear-resistant filling slurry conveying pipeline, comprising a plurality of filling pipeline sections, wherein two adjacent filling pipeline sections are connected by a connecting assembly, wherein the connecting assembly comprises a pair of groove flanges arranged in mirror symmetry and a groove pipe clamp connecting the two groove flanges, wherein the inner diameter of the groove flange is the same as the inner diameter of the filling pipeline;

[0006] A pipe fixing groove is provided on the outer annular surface of the groove flange, a socket is provided on one end surface of the groove flange, the socket coincides with the axis of the groove flange, the inner diameter of the socket is larger than the outer diameter of the filling pipe, and the filling pipe is inserted into the socket and fixed to the end surface of the groove flange by welding;

[0007] The two end surfaces of the groove pipe clamp respectively protrude inward with ridges, the spacing between the two ridges is the same as the spacing between the pipeline fixing grooves on the two groove flanges, and the height of the ridges is greater than the depth of the pipeline fixing grooves.

[0008] In a further technical solution, the outer annular surface of the groove flange located on the side of the pipeline fixing groove away from the socket is a sealing surface, and sealing rings are sleeved on the sealing surfaces of the two groove flanges.

[0009] In a further technical solution, the inner annular surface of the grooved pipe clamp is provided with a cavity for accommodating the sealing ring between the two convex ridges.

[0010] In a further technical solution, a nitriding layer is provided on the inner annular surface of the groove flange.

[0011] In a further technical solution, the thickness of the nitriding layer is 1 mm-5 mm, and the hardness is HRC40-70.

[0012] In a further technical solution, the inner wall of the filling pipe is provided with a high-frequency quenching layer.

[0013] In a further technical solution, the high-frequency quenching layer has a thickness of 1 mm-5 mm and a hardness of HRC40-70.

[0014] In a further technical solution, the difference between the inner diameter of the socket and the outer diameter of the filling pipe is less than 4 mm, and the depth of the socket is 3 mm-10 mm.

[0015] In a further technical solution, the outer diameter of the groove flange is 6mm-30mm larger than the outer diameter of the filling pipe, which is convenient for welding.

[0016] In a further technical solution, the groove flange and the filling pipe are both made of 20# steel.

[0017] Optionally, the groove flange and the filling pipe are made of steel material with increased hardness after nitriding or high-frequency quenching.

[0018] Optionally, the hardening treatment process performs an integral inner wall quenching treatment after the groove flange and the filling pipe are welded together.

[0019] Optionally, the inner wall of the groove flange is hardened by high frequency quenching.

[0020] The utility model is a quick-install wear-resistant filling slurry delivery pipeline, each section of which is connected by a groove flange, the filling pipe is socket-welded on the groove flange, the welding point is located at the right angle formed between the end face of the groove flange and the outer wall of the filling pipe, and a hoop-type groove pipe clamp is used to clamp and fix the groove flanges on the two sections of the filling pipe, so as to complete the rapid assembly of the entire wear-resistant filling slurry delivery pipeline. In addition, after the two convex ridges on the groove pipe clamp are matched and clamped with the pipe fixing grooves on the two groove flanges, the contact end faces of the two groove pipe clamps can be compressed and sealed. The inner walls of the filling pipe and the groove flange are respectively subjected to high-frequency quenching hardening treatment and nitriding hardening treatment to improve the wear resistance of the inner wall of the delivery pipeline.

[0021] The beneficial effects of the utility model are:

[0022] 1. The utility model does not need to perform grooving for the connection of each section of the filling pipe, which greatly reduces the processing difficulty and can realize the rapid assembly of the entire wear-resistant filling slurry conveying pipeline. At the same time, there is no need to increase the overall thickness to improve the tensile strength, which has good economy.

[0023] 2. The utility model adopts a groove flange, and the groove only needs to be processed on the short pipe (groove flange). It is processed by a lathe machine tool, with high processing accuracy and low processing labor intensity.

[0024] 3. Since it is difficult to clamp and groove the bent pipe, the utility model adopts a groove flange which eliminates the need to groove the bent pipe, greatly reduces the processing difficulty, and greatly improves the processing accuracy.

[0025] 4. The groove flange connection method is adopted, the groove pipe clamp is fixed, the filling pipe is removed and installed quickly, and can be directly reused, which is convenient for frequent movement and quick connection. There are two types of connections: rigid and flexible. The flexible joint has the characteristics of axial movement and axial deflection, which can solve the problems of thermal expansion and contraction, misalignment, settlement, earthquake pressure absorption, etc. of the pipeline. The noise and vibration attenuation isolates the propagation of vibration at each connection point. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the groove flange according to the embodiment of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the filling pipeline according to the embodiment of the utility model;

[0028] Figure 3 It is an assembly diagram of the filling pipe and the groove flange according to the embodiment of the utility model;

[0029] Figure 4 It is a structural schematic diagram of the quick-install wear-resistant filling slurry conveying pipeline described in an embodiment of the utility model.

[0030] Description of reference numerals:

[0031] 10. Filling pipe; 11. High-frequency quenching layer; 12. Welding point; 20. Groove flange; 21. Pipe fixing groove; 22. Sealing surface; 23. Socket; 24. Nitriding layer; 30. Groove pipe clamp; 40. Sealing ring. DETAILED DESCRIPTION

[0032] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0033] Example:

[0034] A quick-install wear-resistant filling slurry delivery pipeline, such as Figure 4As shown, it includes several sections of filling pipes 10, and two adjacent sections of filling pipes 10 are connected by a connecting assembly, and the connecting assembly includes a pair of groove flanges 20 arranged in mirror symmetry and a groove pipe clamp 30 connecting the two groove flanges 20, and the inner diameter of the groove flange 20 is the same as the inner diameter of the filling pipe 10;

[0035] like Figure 1 As shown, a pipeline fixing groove 21 is provided on the outer annular surface of the groove flange 20, and a socket 23 is provided on one end surface of the groove flange 20. The socket 23 coincides with the axis of the groove flange 20, and the inner diameter of the socket 23 is larger than the outer diameter of the filling pipe 10. After the filling pipe 10 is inserted into the socket 23, it is welded and fixed to the end surface of the groove flange 20;

[0036] like Figure 4 As shown, ridges protrude inwardly at both end surfaces of the groove pipe clamp 30 , and the spacing between the two ridges is the same as the spacing between the pipe fixing grooves 21 on the two groove flanges 20 . The height of the ridges is greater than the depth of the pipe fixing grooves 21 .

[0037] In another embodiment, if Figure 1 and Figure 4 As shown, the outer annular surface of the groove flange 20 is located on the side of the pipeline fixing groove 21 away from the socket 23 as a sealing surface 22, and sealing rings 40 are sleeved on the sealing surfaces 22 of the two groove flanges 20.

[0038] In another embodiment, if Figure 4 As shown, the inner annular surface of the grooved pipe clamp 30 is provided with a cavity for accommodating the sealing ring 40 between two convex ridges.

[0039] In another embodiment, if Figure 1 As shown, a nitriding layer 24 is provided on the inner annular surface of the groove flange 20. The thickness of the nitriding layer 24 is 1 mm-5 mm, and the hardness is HRC40-70.

[0040] In another embodiment, if Figure 2 As shown, the inner wall of the filling pipe 10 is provided with a high-frequency quenching layer 11, the thickness of the high-frequency quenching layer 11 is 1mm-5mm, and the hardness is HRC40-70.

[0041] In another embodiment, the difference between the inner diameter of the socket 23 and the outer diameter of the filling pipe 10 is less than 4 mm, and the depth of the socket 23 is 3 mm-10 mm.

[0042] In another embodiment, the outer diameter of the groove flange 20 is 6 mm to 30 mm larger than the outer diameter of the filling pipe 10 to facilitate welding.

[0043] In another embodiment, the groove flange 20 and the filling pipe 10 are both made of 20# steel.

[0044] The utility model is a quick-install wear-resistant filling slurry conveying pipeline, such as Figure 3 As shown, each section is connected by a groove flange 20, and the filling pipe 10 is socket-welded on the groove flange 20. The welding point 12 is located at the right angle formed between the end face of the groove flange 20 and the outer wall of the filling pipe 10, and the groove flanges 20 on the two sections of the filling pipe 10 are clamped and fixed by a hoop-type groove pipe clamp 30 to complete the rapid assembly of the entire wear-resistant filling slurry conveying pipeline. In addition, after the two convex ridges on the groove pipe clamp 30 are clamped with the pipe fixing grooves 21 on the two groove flanges 20, the contact end faces of the two groove pipe clamps 30 can be compressed and sealed. The inner walls of the filling pipe 10 and the groove flange 20 are respectively subjected to high-frequency quenching hardening treatment and nitriding hardening treatment to improve the wear resistance of the inner wall of the conveying pipeline.

[0045] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A quick-install wear-resistant filling slurry delivery pipeline, characterized in that: It comprises a plurality of sections of filling pipes, wherein two adjacent sections of the filling pipes are connected by a connecting assembly, wherein the connecting assembly comprises a pair of groove flanges arranged in mirror symmetry and a groove pipe clamp connecting the two groove flanges, and the inner diameter of the groove flange is the same as the inner diameter of the filling pipe; A pipe fixing groove is provided on the outer annular surface of the groove flange, a socket is provided on one end surface of the groove flange, the socket coincides with the axis of the groove flange, the inner diameter of the socket is larger than the outer diameter of the filling pipe, and the filling pipe is inserted into the socket and fixed to the end surface of the groove flange by welding; The two end surfaces of the groove pipe clamp respectively protrude inward with ridges, the spacing between the two ridges is the same as the spacing between the pipeline fixing grooves on the two groove flanges, and the height of the ridges is greater than the depth of the pipeline fixing grooves.

2. The quick-install wear-resistant filling slurry delivery pipeline according to claim 1 is characterized in that: The outer annular surface of the groove flange is located at a side of the pipeline fixing groove away from the socket and is a sealing surface. Sealing rings are sleeved on the sealing surfaces of the two groove flanges.

3. The quick-install wear-resistant filling slurry delivery pipeline according to claim 2 is characterized in that: The inner annular surface of the groove pipe clamp is provided with a cavity for accommodating the sealing ring between the two convex ridges.

4. The quick-install wear-resistant filling slurry delivery pipeline according to claim 1 is characterized in that: A nitriding layer is provided on the inner annular surface of the groove flange.

5. The quick-install wear-resistant filling slurry delivery pipeline according to claim 4 is characterized in that: The thickness of the nitriding layer is 1 mm-5 mm, and the hardness is HRC40-70.

6. The quick-install wear-resistant filling slurry delivery pipeline according to claim 1 is characterized in that: The inner wall of the filling pipe is provided with a high-frequency quenching layer.

7. The quick-install wear-resistant filling slurry delivery pipeline according to claim 6 is characterized in that: The high-frequency quenching layer has a thickness of 1 mm to 5 mm and a hardness of HRC 40 to 70.

8. The quick-install wear-resistant filling slurry delivery pipeline according to claim 1 is characterized in that: The difference between the inner diameter of the socket and the outer diameter of the filling pipe is less than 4 mm, and the depth of the socket is 3 mm-10 mm.

9. The quick-install wear-resistant filling slurry delivery pipeline according to claim 1, characterized in that: The outer diameter of the groove flange is 6mm-30mm larger than the outer diameter of the filling pipe.

10. The quick-install wear-resistant filling slurry delivery pipeline according to claim 1, characterized in that: The groove flange and filling pipe are both made of 20# steel.

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