Ore pulp conveying pipeline elbow capable of prolonging service life

Abstract

An ore pulp conveying pipeline elbow capable of prolonging service life belongs to the technical field of ore pulp conveying pipelines and is used for prolonging the service life of the elbow in the ore pulp conveying pipeline. According to the technical scheme, a deposition groove protruding outwards is formed in the pipe wall of an outlet straight pipe at the right-angle bending position of the elbow, the deposition groove is located in the outer wall, opposite to the lower end of an inlet straight pipe, of the outlet straight pipe, the two sides of the deposition groove protruding outwards are connected with the outer wall of the outlet straight pipe respectively, and the deposition groove is in a circular arc shape in the length direction of the outlet straight pipe. And the arc-shaped front end is in smooth transition connection with the front part of the outlet straight pipe. The abrasion problem of the elbow of the ore pulp conveying pipeline is thoroughly solved through a simple structure, ore leakage caused by abrasion of the elbow is avoided, the maintenance and replacement work of the elbow is reduced, the maintenance and production cost is reduced, the equipment operation rate is improved, and the production stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to an elbow used in a slurry conveying pipeline and belongs to the technical field of slurry conveying pipelines. Background Art

[0002] Iron ore beneficiation plants need to transport slurry during the production process. At present, cast porcelain pipes are generally used for transporting slurry in iron ore beneficiation plants, and the connection method of each part of the pipeline is welding. During the slurry transportation process, due to the large amount of ore processing, the slurry transportation pipeline is heavily loaded and easy to wear, especially at the corners. The wear of the right-angle elbow is particularly serious, which makes the service life of the elbow part unable to match the straight pipe part of the pipeline. Leakage accidents occur frequently, which greatly increases the probability of repairing and replacing the elbow, seriously affecting production. Taking the 6000 inclined plate thickener of the beneficiation plant as an example, the elbow of the slurry transportation pipeline from the 6000 inclined plate to the tailings pump pool is a vertical 90° right-angle elbow with an average service life of 6 months. After the wear and leakage point appears, the workshop needs to stop and repair welding. Frequent leakage leads to low equipment operation rate, reduced product output and increased unit cost. Therefore, it is very necessary to improve the elbows in the existing slurry transportation pipeline. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a slurry conveying pipeline elbow which can increase the service life. The elbow can greatly reduce the wear of the elbow, solve the problem of ore leakage caused by frequent wear of the elbow part of the slurry conveying pipeline, improve the equipment operation rate and stabilize production.

[0004] The technical solution to solve the above technical problems is:

[0005] A slurry conveying pipeline elbow capable of increasing service life is a right-angle elbow, which is composed of an inlet straight pipe and an outlet straight pipe vertically connected. At the right-angle bend of the elbow, the pipe wall of the outlet straight pipe has a sedimentation groove protruding outward, and the sedimentation groove is located on the outer wall of the outlet straight pipe opposite to the lower end of the inlet straight pipe. The sedimentation groove is arc-shaped along the length direction of the outlet straight pipe, and the front end of the arc is smoothly transitionally connected to the front part of the outlet straight pipe.

[0006] The above-mentioned slurry conveying pipeline elbow capable of improving service life, the width of both sides of the sedimentation trough outside the outlet straight pipe is the same as the diameter of the outlet straight pipe, the two side surfaces and the bottom surface of the sedimentation trough are smoothly connected in the width direction of the sedimentation trough, and the maximum depth of the sedimentation trough is 1.5 times the diameter of the outlet straight pipe.

[0007] The beneficial effects of the utility model are:

[0008] The utility model adds a sedimentation trough structure at the right-angle bend portion of the elbow. During the use of the elbow, larger particles of ore sand are deposited at the bottom of the sedimentation trough structure. The ore slurry deposited in the sedimentation trough forms a protective layer for the outlet straight pipe at the right-angle bend of the elbow, avoiding direct impact contact between the ore slurry and the pipe wall of the outlet straight pipe, reducing the wear of the right-angle bend portion, and thus improving the overall life of the elbow.

[0009] The utility model completely solves the wear problem of elbows in slurry conveying pipelines with a simple structure, avoids ore leakage caused by elbow wear, reduces the maintenance and replacement work of elbows, reduces maintenance and production costs, improves equipment operation rate, and ensures stable production.

[0010] The utility model can increase the service life of the elbow by more than four times, stabilize the equipment operation rate and increase the output. After being put into use, it can create an annual profit of more than 40,000 yuan. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 yes Figure 1 Side view of.

[0013] The markings in the figure are as follows: inlet straight pipe 1, outlet straight pipe 2, sedimentation trough 3, slurry hedging area 4, slurry sedimentation area 5. DETAILED DESCRIPTION

[0014] As shown in the figure, the utility model is a right-angle elbow, which is composed of an inlet straight pipe 1 and an outlet straight pipe 2 connected vertically.

[0015] As shown in the figure, at the right-angle bend of the elbow, the pipe wall of the outlet straight pipe 2 has a sedimentation groove 3 protruding outward, and the sedimentation groove 3 is located on the outer wall of the outlet straight pipe 2 opposite to the lower end of the inlet straight pipe 1.

[0016] As shown in the figure, the sedimentation trough 3 is arc-shaped along the length direction of the outlet straight pipe 2, and the front end of the arc is smoothly connected to the front part of the outlet straight pipe 2. The maximum depth of the sedimentation trough 3 is 1.5 times the diameter of the outlet straight pipe 2.

[0017] As shown in the figure, the width of both sides of the sedimentation trough 3 is the same as the diameter of the outlet straight pipe 2, the two sides of the sedimentation trough 3 are respectively connected to the outer wall of the outlet straight pipe 2, and the two side surfaces and the bottom surface of the sedimentation trough 3 are smoothly connected in the width direction of the sedimentation trough 3.

[0018] As shown in the figure, the upper part of the sedimentation tank 3 is the slurry counter-shock area 4, and the lower part is the slurry deposition area 5. During the transportation process, the slurry enters the right-angle bend of the elbow from the inlet straight pipe 1, and the larger particles in the slurry are deposited in the slurry deposition area 5 of the sand sedimentation tank 3. The slurry deposited in the slurry deposition area 5 forms a natural protective layer for the right-angle bend of the elbow, preventing the slurry from directly impacting the wall of the outlet straight pipe 2, reducing the wear of the right-angle bend of the elbow, and extending the service life of the elbow.

[0019] An embodiment of the present utility model is as follows:

[0020] The diameter of the inlet straight pipe 1 is 377 mm and the length is 100 mm;

[0021] The diameter of the outlet straight pipe 2 is 377 mm and the length is 100 mm;

[0022] The length of the sedimentation trough 3 is 700 mm, the width is 377 mm, and the depth is 565 mm. The depth of the slurry counter-pressure zone 4 is 113 mm, and the depth of the slurry sedimentation zone 5 is 452 mm.

Claims

1. A slurry conveying pipeline elbow capable of increasing service life, which is a right-angle elbow, the right-angle elbow being composed of an inlet straight pipe (1) and an outlet straight pipe (2) vertically connected, and characterized in that: At the right-angle bend of the elbow, the wall of the outlet straight pipe (2) has a sedimentation groove (3) protruding outwards. The sedimentation groove (3) is located on the outer wall of the outlet straight pipe (2) opposite to the lower end of the inlet straight pipe (1). The sedimentation groove (3) is in an arc shape along the length direction of the outlet straight pipe (2). The front end of the arc is smoothly transitionally connected to the front part of the outlet straight pipe (2).

2. The slurry conveying pipeline elbow capable of increasing service life according to claim 1 is characterized in that: The width of both sides of the sedimentation groove (3) outside the outlet straight pipe (2) is the same as the diameter of the outlet straight pipe (2), the two side surfaces and the bottom surface of the sedimentation groove (3) are smoothly connected in the width direction of the sedimentation groove (3), and the maximum depth of the sedimentation groove (3) is 1.5 times the diameter of the outlet straight pipe (2).

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