Experimental device for conveying mine filling materials

Abstract

The utility model relates to the technical field of mine equipment, in particular to a mine filling material conveying experiment device which comprises an outer conveying pipe and an inner conveying pipe, the outer conveying pipe is arranged outside the inner conveying pipe, one end of the outer conveying pipe and one end of the inner conveying pipe are connected with the same conveying pump, and a soft sleeve is embedded in the side wall of the middle of the inner conveying pipe. Three swing plates are installed on the surface of the soft sleeve, and a rotary supporting device and a driving extrusion device are installed outside the swing plates. In the mine filling material conveying experiment device, swing plates are extruded to rotate through a second pin shaft, a rotating rod and a third pin shaft, at the moment, the ends, away from a conveying pump, of the three swing plates swing close to one another, a conveying cavity at the position in a conveying inner pipe becomes smaller, and resistance borne by flowing filling materials in the conveying inner pipe is changed; the continuously changing resistance in the conveying inner pipe is used for impacting the filling materials, and the probability that the filling materials adhere to the conveying inner pipe to cause blockage is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment technology, and more specifically, to an experimental device for conveying filling material in mines. Background Technology

[0002] In modern mining operations, backfilling technology, as a key method in underground mining, plays a vital role in stabilizing goaf areas, reducing surface subsidence, and improving mine safety and mineral recovery rates. However, the transportation of backfill material faces numerous challenges, posing serious obstacles to backfilling efficiency and safety.

[0003] Due to their complex material composition, high fine particle content, and high conveying concentration, the flow characteristics of packing materials are extremely complex, leading to increased pipeline transport resistance and significantly increased difficulty in pipeline transportation. During the transportation process, these materials tend to accumulate inside the conveying pipe and may cause blockages. In addition, changes in ambient temperature can also significantly affect the packing materials, causing them to solidify or thicken, further increasing the risk of adhesion and blockage inside the conveying pipe.

[0004] These factors interact, potentially leading to blockages in certain areas of the conveying pipeline, which in turn negatively impacts the operational efficiency and safety of the entire mine backfilling system. Therefore, there is an urgent need for a device that can effectively prevent backfill material from adhering to the conveying pipe and ensure the continuity of the conveying process, thereby reducing the risk of blockages caused by adhesion, optimizing the backfilling process, and improving backfilling efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an experimental device for conveying filling material in mines, in order to solve the numerous problems encountered by filling material in the conveying process mentioned in the background art, which pose serious challenges to filling efficiency and safety.

[0006] To achieve the above objectives, this utility model provides an experimental device for conveying filling material in mines, comprising an outer conveying pipe and an inner conveying pipe. The outer conveying pipe is located outside the inner conveying pipe, and one end of both the outer and inner conveying pipes is connected to the same conveying pump. A soft sleeve is embedded in the middle side wall of the inner conveying pipe, and three swing plates are mounted on the surface of the soft sleeve. A rotating support device and a driving extrusion device are mounted outside the swing plates. The rotating support device, the driving extrusion device, and the sliding support device are all fixed inside the outer conveying pipe. The driving extrusion device includes a driving assembly, the outer shell of which is fixed to the inner wall of the outer conveying pipe. The output shaft of the driving assembly is connected to a disc, and a connecting column is mounted on the outer wall of the disc off-center. A movable frame is slidably mounted outside the connecting column, and two sliding support devices are located at both ends of the movable frame. A first fixed frame is connected to the movable frame, and a second fixed frame is mounted on the swing plate. The first and second fixed frames are connected by a rotating rod.

[0007] Preferably, one end of the rotating rod is rotatably connected to the first fixed frame via a second pin, and the other end of the rotating rod is rotatably connected to the second fixed frame via a third pin.

[0008] Preferably, the rotating support device includes a fixed rod, one end of which is fixed to the inner wall of the outer conveying tube, and the other end of which is hinged to a connecting frame via a first pin, the outer wall of which is connected to the swing plate.

[0009] Preferably, the sliding support device includes a sliding sleeve connected to the outer wall of one end of the movable frame, a sliding rod slidably disposed inside the sliding sleeve, one end of the sliding rod being fixed to the inner wall of the conveying outer tube, and the other end of the sliding rod being connected to a stop block.

[0010] Preferably, a cavity is provided between the outer conveying pipe and the inner conveying pipe, an inlet pipe is installed at the lower part of a section of the outer conveying pipe, and an outlet pipe is installed at the upper part of one end of the outer conveying pipe. Both the inlet pipe and the outlet pipe are connected to the cavity.

[0011] Preferably, the connecting column is cylindrical, the movable frame is a strip frame structure, and the inner wall width of the movable frame is adapted to the cross-sectional diameter of the connecting column.

[0012] Preferably, the swing plates are arranged in a ring at equal intervals on the surface of the soft sleeve.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This experimental device for conveying filling material in mines uses a drive assembly to rotate a disc and a connecting column. The connecting column uses a pressing control to move a moving frame back and forth. When the moving frame moves closer to the swing plate, it presses the swing plate to rotate through the second pin, rotating rod, and third pin. At this time, the ends of the three swing plates away from the conveying pump move closer to each other, making the conveying cavity at this position in the inner conveying tube smaller. This changes the resistance experienced by the flowing filling material in the inner conveying tube. The constantly changing resistance in the inner conveying tube impacts the filling material, reducing the probability of the filling material sticking to the inner conveying tube and causing blockage.

[0015] By setting up an inlet pipe, an outlet pipe, and a cavity, the inlet and outlet pipes can introduce liquid at a preset temperature into the cavity, thereby regulating the temperature of the inner conveying pipe. The cavity also improves the insulation effect of the inner conveying pipe, preventing the filling material from solidifying due to a drop in temperature.

[0016] By setting a fixed rod, a first pin, and a connecting frame, the fixed rod and the first pin support and limit the swing plate, ensuring that the swing plate can rotate smoothly and stably when subjected to external force, and facilitating the rotation mode in which adjacent swing plates move closer to each other. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of this utility model;

[0018] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a three-dimensional cross-sectional structural diagram of the outer conveying pipe of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the rotary support device of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the driving extrusion device of this utility model;

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Outer conveying pipe; 2. Inner conveying pipe; 3. Cavity; 4. Conveying pump; 5. Inlet pipe; 6. Outlet pipe; 7. Soft sleeve; 8. Swinging plate; 9. Rotary support device; 91. Fixed rod; 92. First pin; 93. Connecting frame; 10. Drive extrusion device; 101. Drive assembly; 102. Disc; 103. Connecting column; 104. Moving frame; 105. First fixed frame; 106. Second pin; 107. Rotating rod; 108. Second pin; 109. Second fixed frame; 11. Sliding support device; 111. Sliding sleeve; 112. Sliding rod; 113. Stop. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides an experimental device for conveying filling materials in mines, such as... Figures 1-5 As shown, it includes an outer conveying pipe 1 and an inner conveying pipe 2. The outer conveying pipe 1 is located outside the inner conveying pipe 2. One end of the outer conveying pipe 1 and the inner conveying pipe 2 is connected to the same conveying pump 4. A soft sleeve 7 is embedded in the middle side wall of the inner conveying pipe 2. The outer conveying pipe 1 is a rigid pipe. Three swing plates 8 are installed on the surface of the soft sleeve 7. A rotating support device 9 and a driving extrusion device 10 are installed outside the swing plates 8. The rotating support device 9, the driving extrusion device 10, and the sliding support device 11 are all fixed inside the outer conveying pipe 1. The driving extrusion device 10 includes a driving assembly 101. Component 101 can be a low-power motor. The housing of the drive assembly 101 is fixed to the inner wall of the outer conveying pipe 1. The output shaft of the drive assembly 101 is connected to a disc 102. A connecting column 103 is installed on the outer wall of the disc 102 off-center. A movable frame 104 is slidably provided on the connecting column 103. There are two sliding support devices 11 at both ends of the movable frame 104. A first fixed frame 105 is connected to the movable frame 104. A second fixed frame 109 is installed on the swing plate 8. The first fixed frame 105 and the second fixed frame 109 are connected by a rotating rod 107. By setting the soft sleeve 7 and the swing plate 8, the soft sleeve 7 can ensure the connection between adjacent swing plates 8, and can still maintain the closed connection between the two ends of the soft sleeve 7 and the inner conveying pipe 2 when the swing plate 8 is moving. The rotation of the swing plate 8 can adjust the inner diameter of the soft sleeve 7, realizing the diameter change of the filling material flow path. When the disc 102 rotates, it can squeeze the moving frame 104 through the connecting column 103, which is used to control the reciprocating movement of the moving frame 104 away from and towards the swing plate 8.

[0026] In this embodiment, one end of the rotating rod 107 is rotatably connected to the first fixed frame 105 via the second pin 106, and the other end of the rotating rod 107 is rotatably connected to the second fixed frame 109 via the third pin 108. This allows the movable frame 104 to rotate by pushing the swing plate 8 while maintaining the relative connection between the two.

[0027] Specifically, the rotating support device 9 includes a fixed rod 91. One end of the fixed rod 91 is fixed to the inner wall of the outer conveying pipe 1, and the other end of the fixed rod 91 is hinged to a connecting frame 93 via a first pin 92. The outer wall of the connecting frame 93 is connected to the swing plate 8. By setting the fixed rod 91, the first pin 92, and the connecting frame 93, the fixed rod 91 supports and limits the swing plate 8 via the first pin 92, ensuring that the swing plate 8 can rotate stably when under pressure.

[0028] Furthermore, the sliding support device 11 includes a sliding sleeve 111, which is connected to the outer wall of one end of the movable frame 104. A sliding rod 112 is slidably disposed inside the sliding sleeve 111. One end of the sliding rod 112 is fixed to the inner wall of the conveying outer tube 1, and the other end of the sliding rod 112 is connected to a stop block 113. By setting the sliding sleeve 111 and the sliding rod 112, the sliding rod 112 guides and limits the sliding sleeve 111, ensuring that the movable frame 104 can move stably in a straight line when subjected to external pressure.

[0029] Furthermore, a cavity 3 is provided between the outer conveying pipe 1 and the inner conveying pipe 2. A liquid inlet pipe 5 is installed at the lower part of one section of the outer conveying pipe 1, and a liquid outlet pipe 6 is installed at the upper part of one end of the outer conveying pipe 1. Both the liquid inlet pipe 5 and the liquid outlet pipe 6 are connected to the cavity 3. By setting up the liquid inlet pipe 5, the liquid inlet pipe 5 is used to introduce the temperature-controlled liquid into the cavity 3, which facilitates the insulation and heating of the inner conveying pipe 2. The liquid outlet pipe 6 is used for the liquid to flow out of the cavity 3.

[0030] Furthermore, the connecting column 103 is cylindrical, and the moving frame 104 is a strip frame structure. The inner wall width of the moving frame 104 is adapted to the cross-sectional diameter of the connecting column 103 to ensure sliding stability.

[0031] Furthermore, the swing plates 8 are arranged in a ring at equal intervals on the surface of the soft sleeve 7 to ensure uniform force during swinging.

[0032] When using the experimental device for conveying filling material in a mine, the conveying pump 4 first works to input the filling material into the inner conveying pipe 2. The temperature-controlled liquid is then directly input into the cavity 3 through the liquid inlet pipe 5. At the same time, the drive component 101 is controlled to work. The drive component 101 drives the disc 102 and the connecting column 103 to rotate. The connecting column 103 uses the squeezing control to move the moving frame 104 closer to the swing plate 8. When the moving frame 104 moves closer to the swing plate 8, the moving frame 104 squeezes the swing plate 8 to rotate through the second pin 106, the rotating rod 107 and the third pin 108. At this time, the swing plate 8 rotates around the first pin 92. The ends of the three swing plates 8 away from the conveying pump 4 move closer to each other, making the conveying cavity 3 at this position in the inner conveying pipe 2 smaller. This changes the resistance of the flowing filling material in the inner conveying pipe 2. The filling material interacts with each other under the changing flow rate, thereby reducing its adhesion in the conveying pipe.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An experimental device for conveying filling material in mines, comprising an outer conveying pipe (1) and an inner conveying pipe (2), characterized in that: The outer conveying pipe (1) is located outside the inner conveying pipe (2). One end of the outer conveying pipe (1) and the inner conveying pipe (2) are connected to the same conveying pump (4). A soft sleeve (7) is embedded in the middle side wall of the inner conveying pipe (2). Three swing plates (8) are installed on the surface of the soft sleeve (7). A rotating support device (9) and a driving extrusion device (10) are installed outside the swing plates (8). The rotating support device (9), the driving extrusion device (10), and the sliding support device (11) are all fixed inside the outer conveying pipe (1). The driving extrusion device (10) includes a driving assembly (101). The outer shell of 01) is fixed to the inner wall of the outer conveying tube (1). The output shaft of the drive assembly (101) is connected to a disc (102). A connecting column (103) is installed on the outer wall of the disc (102) off-center. A moving frame (104) is slidably provided on the outside of the connecting column (103). There are two sliding support devices (11) at both ends of the moving frame (104). A first fixed frame (105) is connected to the moving frame (104). A second fixed frame (109) is installed on the swing plate (8). The first fixed frame (105) and the second fixed frame (109) are connected by a rotating rod (107).

2. The experimental device for conveying filling material in mines according to claim 1, characterized in that: One end of the rotating rod (107) is rotatably connected to the first fixed frame (105) via the second pin (106), and the other end of the rotating rod (107) is rotatably connected to the second fixed frame (109) via the third pin (108).

3. The experimental device for conveying filling material in mines according to claim 1, characterized in that: The rotating support device (9) includes a fixed rod (91), one end of which is fixed to the inner wall of the outer conveying pipe (1), and the other end of which is hinged to a connecting frame (93) via a first pin (92). The outer wall of the connecting frame (93) is connected to the swing plate (8).

4. The experimental device for conveying filling material in mines according to claim 1, characterized in that: The sliding support device (11) includes a sliding sleeve (111), which is connected to the outer wall of one end of the movable frame (104). A sliding rod (112) is slidably provided inside the sliding sleeve (111). One end of the sliding rod (112) is fixed to the inner wall of the conveying outer tube (1), and the other end of the sliding rod (112) is connected to a stop block (113).

5. The experimental device for conveying filling material in mines according to claim 1, characterized in that: A cavity (3) is provided between the outer conveying pipe (1) and the inner conveying pipe (2). A liquid inlet pipe (5) is installed at the lower part of a section of the outer conveying pipe (1), and a liquid outlet pipe (6) is installed at the upper part of one end of the outer conveying pipe (1). Both the liquid inlet pipe (5) and the liquid outlet pipe (6) are connected to the cavity (3).

6. The experimental device for conveying filling material in mines according to claim 1, characterized in that: The connecting column (103) is cylindrical, and the movable frame (104) is a strip frame structure. The inner wall width of the movable frame (104) is adapted to the cross-sectional diameter of the connecting column (103).

7. The experimental device for conveying filling material in mines according to claim 1, characterized in that: The swing plates (8) are arranged in a ring at equal intervals on the surface of the soft sleeve (7).

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