Coal mine filling pipe

Abstract

The utility model provides a coal mine filling pipe which comprises a filling pipe body, a quick connector pipe is arranged on the filling pipe body, an annular square flange is arranged at the front end of the quick connector pipe, a welding groove with a large chamfer is formed in the rear end of the quick connector pipe, and the welding groove with the large chamfer is in butt joint with the filling pipe body in an annular welding mode. According to the coal mine filling pipe, the large-chamfer welding groove and the filling pipe body are in butt joint and girth welding, so that the installation efficiency of the filling pipe is improved, the filling pipe can be conveniently and rapidly installed and disassembled, meanwhile, pipe blocking faults can be conveniently removed in the filling process, the filling pipe can be conveniently cleaned and dredged, and safety and smoothness of coal mine filling operation are guaranteed; use is convenient, installation is fast, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of a filling pipe used for coal mine filling and mining, and specifically discloses a coal mine filling pipe. Background Art

[0002] Modern coal mines advocate green mining technology. After coal mining, the roof does not collapse, the surface ecology is not damaged, and the recovery rate is improved. The coal industry has proposed a new technology for coal mining with "three downs and one up". The paste filling mining technology is adopted. Abandoned coal gangue or construction foundation pit sand, fly ash, and an appropriate amount of cement are prepared into a paste from the surface and injected into the underground goaf with a concrete pump. After solidification, low-strength concrete is formed, which becomes an artificial support body in the coal mine and all the coal is mined;

[0003] And this process needs to use a large number of filling pipes, and the length of the filling pipes is generally from several thousand meters to ten thousand meters. When the filling pipes are in use, they need to be disassembled and cleaned regularly or because of the paste blocking in the pipes, the paste in the pipes needs to be cleaned. If they cannot be cleaned in time, the paste will solidify in the pipes and cause the filling pipes to be scrapped, thereby affecting the coal mine production and causing waste, and the cost is high. At the same time, since the filling pipes are long, large equipment is required to process the pipe joints, resulting in low processing efficiency. Therefore, a coal mine filling pipe is needed. Utility Model Content

[0004] In view of the above-mentioned defects or shortcomings in the prior art, a coal mine filling pipe includes a filling pipe body, a quick joint pipe is arranged on the filling pipe body, and the front end of the quick joint pipe is provided with an annular square flange, and the rear end of the quick joint pipe is provided with a large chamfered welding groove, and the large chamfered welding groove is circumferentially welded to the filling pipe body.

[0005] Preferably, the filling tube bodies are connected via an annular square flange.

[0006] Preferably, the large chamfered welding groove is butt-welded to the filling pipe body, and the annular square flange at the front end of the quick connector pipe joint is connected to another filling pipe by a pipe fitting.

[0007] Beneficial effects: The utility model provides a coal mine filling pipe, which improves the installation efficiency of the filling pipe by butt-welding the large chamfered welding groove with the filling pipe body, facilitates the quick installation and disassembly of the filling pipe, realizes the rapid manufacture of the filling pipe, and also facilitates the troubleshooting of pipe blockages and the cleaning and dredging of the filling pipe during the filling process, thereby ensuring the safety and smoothness of coal mine filling operations. The utility model is easy to use, quick to install, safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0010] In the figure: 1. Quick connector pipe; 2. Annular square flange; 3. Large chamfered welding groove; 4. Filling pipe body. DETAILED DESCRIPTION

[0011] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0012] The accompanying drawings in the embodiments of the present invention: different types of section lines in the drawings are not marked according to national standards, nor do they impose any requirements on the materials of the components. Instead, they are used to distinguish the cross-sectional views of the components in the drawings.

[0013] See also Figure 1 A coal mine filling pipe comprises a filling pipe body 4, on which a quick joint pipe 1 is arranged, and a front end of the quick joint pipe 1 is provided with an annular square flange 2, and a rear end of the quick joint pipe 1 is provided with a large chamfered welding groove 3, and the large chamfered welding groove 3 is butt-welded with the filling pipe body 4 by girth welding.

[0014] The filling pipe bodies 4 are connected via an annular square flange 2 .

[0015] The large chamfered welding groove 3 is butt-welded to the filling pipe body 4, and the annular square flange at the front end of the quick joint pipe 1 is connected to another filling pipe by a pipe fitting.

[0016] It should be noted that the annular square flange 2 can quickly connect the filling pipe body 4 with another filling pipe, and the large chamfered welding groove 3 can be used to butt-weld the filling pipe body 4. By butting and butting the large chamfered welding groove 3 with the filling pipe body 1, the installation efficiency of the filling pipe is improved, and the quick installation and disassembly of the filling pipe is facilitated. At the same time, it also facilitates the troubleshooting of pipe blockages and the cleaning and unblocking of the filling pipe during the filling process, thereby ensuring the safety and smoothness of coal mine filling operations. It is easy to use, quick to install, safe and reliable.

[0017] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A coal mine filling pipe, comprising a filling pipe body (4), characterized in that: A quick joint pipe (1) is provided on the filling pipe body (4), and a front end of the quick joint pipe (1) is provided with an annular square flange (2), and a rear end of the quick joint pipe (1) is provided with a large chamfered welding groove (3), and the large chamfered welding groove (3) is butt-jointed with the filling pipe body (4) by girth welding.

2. A coal mine filling pipe according to claim 1, characterized in that: The filling pipe bodies (4) are connected via an annular square flange (2).

3. A coal mine filling pipe according to claim 1, characterized in that: The large chamfered welding groove (3) is butt-welded to the filling pipe body (4), and the annular square flange at the front end of the quick joint pipe (1) is connected to another filling pipe by a pipe fitting.

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