Multifunctional flange pipeline joint spreader

Abstract

The utility model aims to provide a multifunctional flange pipeline joint spreader, which belongs to the technical field of coal mine tools and comprises a spreading frame with a U-shaped section, first open holes corresponding to bolt holes of a flange plate are symmetrically arranged at the top end of the spreading frame, and ejector rods used for connecting the spreading frame and the flange plate are arranged in the first open holes. A through hole is formed in the bottom of the opening frame, an opening tip used for opening a flange plate is arranged in the through hole, a puller bolt is arranged at the bottom of the opening tip, a second opening is formed in the side wall of the opening frame, and a limiting bolt playing a limiting role is arranged in the second opening. By means of the pipeline rubber pad replacing device, the pipeline rubber pad can be replaced in a time-saving and labor-saving mode.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine tool technology, specifically relating to a multi-functional flange pipe joint opener. Background Technology

[0002] According to Article 249 of the "Coal Mine Safety Regulations," mines must be equipped with surface fire-fighting water tanks and underground fire-fighting pipeline systems. The underground fire-fighting pipeline system should be laid to the mining face, with branch pipes and valves installed every 100m; however, in belt conveyor roadways, branch pipes and valves should be installed every 50m. Article 687 stipulates that compressed air pipelines should be installed along the emergency escape routes in mining areas. The main pipeline diameter should be no less than 100mm, and the pipeline diameter at the mining face should be no less than 50mm. The interval between air supply valves on the compressed air pipelines should not exceed 200m. In mines with complex or extremely complex hydrogeological conditions, compressed air pipelines should be laid at the highest points of each level, mining area, and uphill roadway, and air supply valves should be installed. Water supply pipelines should be laid along the emergency escape routes in mining areas, and water supply valves should be installed near the air supply valves.

[0003] As the above regulations indicate, underground pipeline systems in coal mines play a crucial role, directly impacting the lives and safety of coal miners. With the continuous development of large-scale mines nationwide, the workload for installing and maintaining underground pipelines is enormous. Currently, most underground coal mines in China use flanged welded pipes with rubber gaskets, secured with bolts. During use, these rubber gaskets are prone to damage due to aging and pressure. Replacement is difficult, time-consuming, and risky due to the small gaps between pipe joints, significantly impacting normal underground production. In emergency situations, this could directly endanger the lives of coal miners. Utility Model Content

[0004] This utility model addresses the problems of difficulty, time-consuming process, and high risk in replacing rubber gaskets in underground coal mine pipelines by providing a multi-functional flange pipeline joint opener for replacing pipeline tape underground, thereby achieving the goal of simple, time-saving, and labor-saving replacement of pipeline gaskets.

[0005] The present invention adopts the following technical solution:

[0006] A multifunctional flange pipe joint expander includes a U-shaped expansion frame. The top of the expansion frame is symmetrically provided with openings corresponding to the bolt holes of the flange. A top rod for connecting the expansion frame to the flange is provided in the opening. The bottom of the expansion frame is provided with a through hole, and a support tip for expanding the flange is provided in the through hole. A tightening bolt is provided at the bottom of the support tip. The side wall of the expansion frame is provided with an opening, and a limiting bolt for limiting the position is provided in the opening.

[0007] Furthermore, the through hole at the bottom of the support frame is located at the center of the support frame.

[0008] Furthermore, the cross-section of the through hole at the bottom of the support frame is elliptical.

[0009] Furthermore, the side wall of the support tip is provided with a slot, through which the limiting bolt passes.

[0010] Furthermore, one end of the support tip is a pointed cone end, a flat end, or a grooved end.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This utility model has a simple structure and is easy to use.

[0013] 2. By using this utility model, the replacement of pipeline rubber gaskets can be done in a time-saving and labor-saving manner.

[0014] 3. By using this utility model, it is also possible to dismantle flange fixing bolts that cannot be removed due to corrosion. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of Example 1;

[0016] Figure 2 This is an exploded view of Example 1;

[0017] Figure 3 This is a front view of the usage state of Example 1;

[0018] Figure 4 This is an axis view showing the usage status of Example 1;

[0019] Figure 5 This is a schematic diagram of the structure of Example 2;

[0020] Figure 6 This is a schematic diagram of the support tip structure in Example 2;

[0021] Figure 7 This is a schematic diagram of the usage state of Example 2;

[0022] Figure 8 This is a schematic diagram of the support tip structure in Example 3;

[0023] Wherein: 1-Spreading frame; 2-Opening one; 3-Top rod; 4-Through hole; 5-Spreading tip; 6-Tightening bolt; 7-Opening two; 8-Limiting bolt; 9-Slot. Detailed Implementation

[0024] The present invention will be further described with reference to the accompanying drawings.

[0025] Example 1

[0026] like Figures 1 to 4 As shown, a multifunctional flange pipe joint opener includes an opener frame 1 with a U-shaped cross-section. The top of the opener frame 1 is symmetrically provided with openings 2 corresponding to the bolt holes of the flange. A top rod 3 for connecting the opener frame 1 to the flange is provided in the opening 2. The bottom of the opener frame 1 is provided with a through hole 4. A support tip 5 for opening the flange is provided in the through hole 4. The support tip 5 is assembled with the opener frame 1 through the through hole 4. The support tip 5 can move relative to each other in the vertical direction within the through hole 4. A tightening bolt 6 is provided at the bottom of the support tip 5. The side wall of the opener frame 1 is provided with an opening 7. A limiting bolt 8 for limiting is provided in the opening 7.

[0027] Furthermore, the through hole 4 at the bottom of the support frame 1 is located at the center of the support frame 1.

[0028] Furthermore, the cross-section of the through hole 4 at the bottom of the support frame 1 is elliptical.

[0029] Furthermore, the side wall of the support tip 5 is provided with a slot 9, through which the limiting bolt 8 passes. The limiting bolt 8 fixes the support tip 5 to the support frame 1 through the second opening and the slot 9 on the support tip 5, ensuring that it will not fall off freely.

[0030] Furthermore, one end of the support tip 5 is flat.

[0031] The method of using this utility model is as follows:

[0032] The expansion bracket 1 of the two multi-functional flange pipe joint expanders is fixed to the bolt holes on the pipe by the top rod 3. Then, by continuously tightening the top bolt 6, the expansion tip 5 is forced to continuously enter the pipe joint, and finally the pipe joint is expanded to the appropriate size. Then the damaged sealing gasket inside the pipe joint can be replaced smoothly.

[0033] Example 2

[0034] like Figures 5 to 7 As shown, replace the support tip 5 with a support tip 5 with a pointed end, fix the support 1 between the fixing bolts of the two flanges, and by tightening the top bolt 6, the tip of the support tip 5 can break the fixing bolt.

[0035] Example 3

[0036] like Figure 8 As shown, one end of the support tip 5 is a groove end.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multifunctional flange pipe joint expander, characterized in that: The support frame (1) has a U-shaped cross section. The top of the support frame (1) is symmetrically provided with an opening (2) corresponding to the bolt holes of the flange. The opening (2) is provided with a top rod (3) for connecting the support frame (1) and the flange. The bottom of the support frame (1) is provided with a through hole (4). The through hole (4) is provided with a support tip (5) for supporting the flange. The bottom of the support tip (5) is provided with a tightening bolt (6). The side wall of the support frame (1) is provided with an opening (7). The opening (7) is provided with a limiting bolt (8) for limiting.

2. The multifunctional flange pipe joint expander according to claim 1, characterized in that: The through hole (4) at the bottom of the support frame (1) is located at the center of the support frame (1).

3. The multifunctional flange pipe joint expander according to claim 1, characterized in that: The cross-section of the through hole (4) at the bottom of the support frame (1) is elliptical.

4. A multifunctional flange pipe joint expander according to claim 1, characterized in that: The side wall of the support tip (5) is provided with a slot (9), and the limiting bolt (8) passes through the slot (9).

5. A multifunctional flange pipe joint expander according to claim 1, characterized in that: One end of the support tip (5) is a pointed end, a flat end, or a grooved end.

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