Mine paste filling multi-pipeline switching device and method

Abstract

The invention discloses a mine paste filling multi-pipeline switching device and method, and relates to the technical field of paste filling switching devices.The mine paste filling multi-pipeline switching device comprises a frame body and an adapter pipe, a first frame plate and a second frame plate which are arranged in parallel are installed on the frame body, an inlet pipe is installed on the first frame plate, and a switching cylinder coaxial with the inlet pipe is installed on the second frame plate; a push disc is installed at the end, close to the inlet pipe, of the switching cylinder, a fixed disc is installed at the end, away from the inlet pipe, of the switching cylinder, a switching cavity is formed between the fixed disc and the push disc, a plurality of outlet pipes which are distributed in the circumferential direction and communicate with the switching cavity are installed on the fixed disc, and a sleeve communicating with the switching cavity is installed on the push disc. A push-pull mechanism used for controlling the push disc to move is installed on the second frame plate, and a rotating mechanism used for controlling the push disc to rotate is installed on the push-pull mechanism. And therefore, the paste filling efficiency and the fluidity in the paste filling process are improved, and the multi-pipeline switching efficiency, operation simplicity and safety are improved.

Description

Technical Field

[0001] The invention relates to the technical field of paste filling switching devices, and in particular to a mine paste filling multi-pipeline switching device and method. Background Art

[0002] With the continuous advancement of coal mining technology, paste filling technology is increasingly used in mines. As an effective post-mining processing technology, paste filling can not only reduce surface subsidence and improve resource recovery rate, but also effectively prevent groundwater pollution and protect the ecological environment of mining areas. However, with the increase in mining depth and the complexity of mining surfaces, the underground filling environment has become more complex and changeable.

[0003] In underground filling operations, there are many working faces distributed in different directions, the distance is long, and the space is limited, especially the space at the support of the comprehensive mining working face is small. The traditional filling pipeline system usually adopts the method of laying a single pipeline or multiple pipelines independently, which not only occupies a large amount of valuable underground space, but also increases the cost of pipeline laying and maintenance. In addition, due to the changes in filling requirements between different working faces, frequent pipeline switching has become the norm, and the existing pipeline switching devices often have problems such as complex operation, long time consumption, poor wear resistance, and inability to withstand high pressure, which seriously restricts the efficiency and safety of filling operations.

[0004] Therefore, it is necessary to provide a multi-pipeline switching device and method for mine paste filling to solve the problems raised in the above background technology. Summary of the invention

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-pipeline switching device for filling mine paste, comprising a frame body and a transfer tube, the frame body being respectively provided with a frame plate 1 and a frame plate 2 arranged in parallel, the frame plate 1 being provided with an inlet pipe, the frame plate 2 being provided with a switching cylinder coaxially arranged with the inlet pipe, a push plate being provided at one end of the switching cylinder close to the inlet pipe, a fixed plate being provided at one end of the switching cylinder away from the inlet pipe, a switching cavity being formed between the fixed plate and the push plate, a plurality of circumferentially distributed outlet pipes connected with the switching cavity being provided on the fixed plate, a sleeve being provided on the push plate and connected with the switching cavity, and the sleeve being used for cooperating and connecting with the inlet of the outlet pipe, one end of the transfer tube being rotatably connected with the outlet of the inlet pipe, and the other end of the transfer tube being slidably connected with the inlet of the sleeve, a push-pull mechanism for controlling the movement of the push plate being provided on the frame plate 2, and a rotating mechanism for controlling the rotation of the push plate being provided on the push-pull mechanism.

[0006] Furthermore, the switching chamber and the lumen of the inlet pipe are connected via a reflux pipe, a one-way valve is provided on the reflux pipe, the one-way valve is used to control the paste in the switching chamber to flow into the lumen of the inlet pipe, and a reflux pump is also installed on the reflux pipe.

[0007] Furthermore, the push-pull mechanism includes a telescopic rod installed on the second frame plate, the output end of the telescopic rod faces the first frame plate, a movable plate is fixed to the output end of the telescopic rod, and the push plate is rotatably installed on the movable plate at one end of the push plate facing the first frame plate.

[0008] Furthermore, the rotating mechanism includes a motor and a gear ring, the gear ring is coaxially fixed with the push plate, and the output end of the motor is equipped with a gear meshing with the gear ring.

[0009] Furthermore, the sleeve includes an inner sleeve and an outer sleeve sleeved on the outlet side of the inner sleeve, the inlet of the inner sleeve is sealed and slidably connected to the outlet of the transfer tube, the outlet of the inner sleeve is provided with a plug for sealing the inner sleeve lumen, and a through hole connected to the outer sleeve lumen is provided on the tube wall of the inner sleeve near the outlet.

[0010] Furthermore, the outlet end of the outer sleeve is arranged flush with the end of the plug close to the switching chamber.

[0011] Furthermore, a connecting groove corresponding to the outlet pipe is provided on the fixed disk, and the inlet of the outlet pipe coaxially passes through the connecting groove. The inlet of the outlet pipe is provided with a blocking block for blocking the tube cavity of the outlet pipe. A through hole 2 is provided on the tube wall of the outlet pipe between the blocking block and the bottom of the connecting groove, and an annular cavity is formed between the outlet pipe and the connecting groove. A piston ring for controlling the connection between the through hole 2 and the switching cavity is installed in the annular cavity, and the piston ring is connected to the bottom of the connecting groove by a spring.

[0012] Furthermore, the outlet of the outer sleeve passes through one end of the push plate close to the switching cavity, the inner diameter of the outer tube wall of the outer sleeve is the same as the inner diameter of the annular cavity wall, and the inner diameter of the outer wall of the plug is the same as the inner diameter of the inner wall of the outlet pipe.

[0013] Furthermore, a pressure sensor for monitoring the pressure of the switching chamber is installed at the inlet of the reflux pipe.

[0014] A multi-pipeline switching method for filling a mine paste comprises the following steps:

[0015] Step 1: The push-pull mechanism adjusts the push plate to move away from the fixed plate until the sleeve and the connected outlet pipe are separated from each other, and the outlet of the sleeve is connected to the switching chamber;

[0016] Step 2: The rotating mechanism adjusts the push plate to rotate until the sleeve is aligned with the outlet pipe that needs to be switched and is not connected;

[0017] Step 3: The push-pull mechanism adjusts the push plate to approach the fixed plate until the sleeve is docked with the outlet pipe that needs to be switched and has not been docked. At the same time, the reflux pump sucks the paste in the switching cavity and introduces it into the inlet pipe.

[0018] Compared with the prior art, the present invention provides a multi-pipeline switching device and method for filling paste in a mine, which has the following beneficial effects:

[0019] The present invention adopts the design of the transfer tube, switching cylinder, push plate, fixed plate, switching cavity, push-pull mechanism, rotating mechanism and reflux pipe, so that the paste can be continuously filled during the multi-pipeline switching process, avoiding solidification of the paste when it is left standing, reducing the difficulty of driving the paste to flow again when it is left standing, thereby improving the paste filling efficiency, improving the fluidity during the paste filling process, and improving the efficiency, operation simplicity and safety of multi-pipeline switching, and avoiding paste leakage during the multi-pipeline switching process, ensuring the cleanliness of the working environment and avoiding waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure of the multi-pipeline switching device for filling the mine paste of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 2 The structure of the multi-pipeline switching device for filling the mine paste of the present invention is shown in FIG. Figure 2 ;

[0022] Figure 3 It is a partial cross-sectional structural schematic diagram of the mine paste filling multi-pipeline switching device of the present invention;

[0023] Figure 4 It is a schematic cross-sectional structure diagram of a multi-pipeline switching device for filling a mine paste according to the present invention;

[0024] Figure 5 for Figure 4 Schematic diagram of the local structure;

[0025] In the figure: 1, frame; 2, inlet pipe; 3, transfer pipe; 4, sleeve; 5, push-pull mechanism; 6, push plate; 7, rotating mechanism; 8, fixed plate; 9, outlet pipe; 10, reflux pipe; 11, frame plate one; 12, frame plate two; 13, switching cylinder; 131, switching chamber; 41, inner sleeve; 42, outer sleeve; 411, through hole one; 412, plug; 51, telescopic rod; 52, moving plate; 71, motor; 72, gear; 73, gear ring; 81, connecting groove; 82, ring chamber; 91, piston ring; 92, spring; 93, through hole two; 94, block; 101, one-way valve; 102, reflux pump; 103, pressure sensor. DETAILED DESCRIPTION

[0026] Reference Figure 1-Figure 5The present invention provides a technical solution: a multi-pipeline switching device for filling paste in a mine, comprising a frame 1 and a transfer tube 3, wherein the frame 1 is respectively provided with a frame plate 11 and a frame plate 2 12 arranged in parallel, the frame plate 1 1 is provided with an inlet pipe 2, the frame plate 2 12 is provided with a switching cylinder 13 arranged coaxially with the inlet pipe 2, a push plate 6 is provided at one end of the switching cylinder 13 close to the inlet pipe 2, a fixed plate 8 is provided at one end of the switching cylinder 13 away from the inlet pipe 2, and a switching cavity 1 is formed between the fixed plate 8 and the push plate 6. 31, a plurality of outlet pipes 9 distributed circumferentially and connected to the switching chamber 131 are installed on the fixed plate 8, a sleeve 4 connected to the switching chamber 131 is installed on the push plate 6, and the sleeve 4 is used to communicate with the inlet of the outlet pipe 9, one end of the transfer tube 3 is rotatably connected to the outlet of the inlet pipe 2, and the other end of the transfer tube 3 is slidably connected to the inlet of the sleeve 4, a push-pull mechanism 5 for controlling the movement of the push plate 6 is installed on the frame plate 2, and a rotating mechanism 7 for controlling the rotation of the push plate 6 is installed on the push-pull mechanism 5.

[0027] In this embodiment, the switching chamber 131 is also connected to the lumen of the inlet pipe 2 through a reflux pipe 10, and a one-way valve 101 is provided on the reflux pipe 10. The one-way valve 101 is used to control the paste in the switching chamber 131 to flow into the lumen of the inlet pipe 2. A reflux pump 102 is also installed on the reflux pipe 10; wherein, the one-way valve 101 is used to control the paste in the switching chamber 131 to reflux into the inlet pipe 2.

[0028] In this embodiment, the push-pull mechanism 5 includes a telescopic rod 51 installed on the frame plate 12, the output end of the telescopic rod 51 faces the frame plate 11, and a movable plate 52 is fixed to the output end of the telescopic rod 51, and the push plate 6 is rotatably installed on the movable plate 52 at one end close to the frame plate 11; the movement of the movable plate 52 is regulated by the telescopic movement of the telescopic rod 51, and the movable plate 52 drives the push plate 6 away from or close to the fixed plate 8. When the sleeve 4 and an outlet pipe 9 are in a coaxial state, at this time, when the push plate 6 is close to the fixed plate 8, the sleeve 4 is connected to the outlet pipe 9, and the paste in the inlet pipe 2 passes through the transfer tube 3, the sleeve 4 and the outlet pipe 9 in turn. When the push plate 6 is separated from the fixed plate 8, the sleeve 4 is separated from the outlet pipe 9, and the paste in the inlet pipe 2 passes through the transfer tube 3, the sleeve 4 and the switching chamber 131 in turn.

[0029] In this embodiment, the rotating mechanism 7 includes a motor 71 and a gear ring 73. The gear ring 73 is coaxially fixed with the push plate 6. The output end of the motor 71 is equipped with a gear 72 meshing with the gear ring 73. The motor 71 drives the gear 72, and the gear 72 drives the gear ring 73 and the push plate 6 to rotate synchronously, thereby adjusting the sleeve 4 to align the outlet pipe 9 to be switched.

[0030] In this embodiment, the sleeve 4 includes an inner sleeve 41 and an outer sleeve 42 sleeved on the outlet side of the inner sleeve 41, the inlet of the inner sleeve 41 is sealed and slidably connected to the outlet of the transfer tube 3, the outlet of the inner sleeve 41 is provided with a plug 412 for sealing the tube cavity of the inner sleeve 41, and a through hole 411 connected to the tube cavity of the outer sleeve 42 is provided on the tube wall of the inner sleeve 41 near the outlet; when the push plate 6 moves, the push plate 6 can drive the sleeve 4 to slide on the outlet of the transfer tube 3 and maintain the sealing state between the sleeve 4 and the transfer tube 3; the flow process of the paste in the sleeve 4: the paste enters through the inner sleeve 41, is discharged through the through hole 411, and enters the annular flow channel formed between the outer sleeve 42 and the inner sleeve 41.

[0031] In this embodiment, the outlet end of the outer sleeve 42 is flush with the end of the plug 412 close to the switching chamber 131 so as to cooperate with the outlet pipe 9 .

[0032] In this embodiment, the fixed disk 8 is provided with a connecting groove 81 corresponding to the outlet pipe 9, the inlet of the outlet pipe 9 coaxially passes through the connecting groove 81, the inlet of the outlet pipe 9 is provided with a blocking block 94 for blocking the tube cavity of the outlet pipe 9, a through hole 2 93 is provided on the tube wall of the outlet pipe 9 between the blocking block 94 and the bottom of the connecting groove 81, and an annular cavity 82 is formed between the outlet pipe 9 and the connecting groove 81, a piston ring 91 for controlling the connection between the through hole 2 93 and the switching cavity 131 is installed in the annular cavity 82, and the piston ring 91 is connected to the bottom of the connecting groove 81 through a spring 92; when the sleeve 4 is docked with the outlet pipe 9, the plug 412 is embedded in the tube cavity of the outlet pipe 9, and the outer sleeve 42 is embedded in the annular cavity 82. As the paste continues to flow, the paste pushes the piston ring 91 to move, the spring 92 is compressed, and the through hole 2 93 and the switching cavity 131 are connected. The piston rings 91 are staggered with each other. At this time, the paste enters the tube cavity of the outlet pipe 9 through the second through hole 93; when the sleeve 4 is separated from the outlet pipe 9, the plug 412 is separated from the tube cavity of the outlet pipe 9, and the outer sleeve 42 is separated from the ring cavity 82. At this time, the continuously flowing paste will flow into the switching cavity 131 with a gradually increasing volume. Under the action of the spring 92, the piston ring 91 blocks the second through hole 93, so that during the switching process between the sleeve 4 and the outlet pipe 9, the paste can still flow continuously, thereby avoiding shutdown operations, preventing the paste from solidifying when standing, and reducing the difficulty of driving the paste to flow again when it is standing, thereby improving the paste filling efficiency, improving the fluidity during the paste filling process, and improving the efficiency, simplicity of operation and safety of multi-pipeline switching.

[0033] In this embodiment, the outlet of the outer sleeve 42 passes through one end of the push plate 6 close to the switching chamber 131, the inner diameter of the outer tube wall of the outer sleeve 42 is the same as the inner diameter of the annular wall of the annular chamber 82, and the inner diameter of the outer wall of the plug 412 is the same as the inner diameter of the inner tube wall of the outlet pipe 9.

[0034] In this embodiment, a pressure sensor 103 for monitoring the pressure of the switching chamber 131 is installed at the inlet of the reflux pipe 10; when multiple pipelines are switched, the pressure sensor 103 monitors the pressure in the switching chamber 131 in real time, feeds back to the telescopic rod 51, controls the telescopic rate of the telescopic rod 51, and feeds back to the reflux pump 102 to control the flow rate of the reflux pump 102, thereby ensuring the stability and smoothness of the storage and discharge of the paste in the switching chamber 131.

[0035] In a specific implementation, when the sleeve 4 is connected to an outlet pipe 9, if the sleeve 4 and the outlet pipe 9 need to be switched, the following steps are included:

[0036] Step 1: The push-pull mechanism 5 adjusts the push plate 6 to move away from the fixed plate 8 until the sleeve 4 and the connected outlet pipe 9 are separated from each other, and the outlet of the sleeve 4 is connected to the switching chamber 131. During this process, the paste in the sleeve 4 is gradually introduced into the switching chamber 131, and the volume of the switching chamber 131 increases accordingly;

[0037] Step 2: The rotating mechanism 7 controls the push plate 6 to rotate until the sleeve 4 is aligned with the outlet pipe 9 that needs to be switched and is not connected. During this process, the paste continues to be discharged from the sleeve 4 and enters the switching chamber 131;

[0038] Step 3: The push-pull mechanism 5 adjusts the push plate 6 to approach the fixed plate 8 until the sleeve 4 is docked with the outlet pipe 9 that needs to be switched and has not been docked. At the same time, the reflux pump 102 sucks the paste in the switching chamber 131 and introduces it into the inlet pipe 2. The reflux pump 102 sucks out the paste in the switching chamber 131 and introduces it into the inlet pipe 2. The paste can be continuously introduced into the switched outlet pipe 9.

[0039] The above description is only a preferred specific implementation manner of the invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-pipeline switching device for filling paste in a mine, comprising a frame (1) and a transfer pipe (3), wherein a frame plate 1 (11) and a frame plate 2 (12) arranged in parallel are respectively mounted on the frame (1), characterized in that: The first frame plate (11) is provided with an inlet pipe (2), the second frame plate (12) is provided with a switching cylinder (13) coaxially arranged with the inlet pipe (2), a push plate (6) is provided at one end of the switching cylinder (13) close to the inlet pipe (2), a fixed plate (8) is provided at one end of the switching cylinder (13) away from the inlet pipe (2), a switching cavity (131) is formed between the fixed plate (8) and the push plate (6), a plurality of outlet pipes (9) circumferentially distributed and connected to the switching cavity (131) are provided on the fixed plate (8), ), a sleeve (4) communicating with the switching chamber (131) is installed on the push plate (6), and the sleeve (4) is used to cooperate with the inlet of the outlet pipe (9) to communicate, one end of the transfer tube (3) is rotatably connected to the outlet of the inlet pipe (2), and the other end of the transfer tube (3) is slidably connected to the inlet of the sleeve (4), and a push-pull mechanism (5) for controlling the movement of the push plate (6) is installed on the frame plate 2 (12), and a rotating mechanism (7) for controlling the rotation of the push plate (6) is installed on the push-pull mechanism (5).

2. The multi-pipeline switching device for filling paste in a mine according to claim 1, characterized in that: The switching chamber (131) is also connected to the lumen of the inlet pipe (2) via a reflux pipe (10). A one-way valve (101) is provided on the reflux pipe (10). The one-way valve (101) is used to control the paste in the switching chamber (131) to flow into the lumen of the inlet pipe (2). A reflux pump (102) is also installed on the reflux pipe (10).

3. The multi-pipeline switching device for filling mine paste according to claim 2, characterized in that: The push-pull mechanism (5) comprises a telescopic rod (51) mounted on the second frame plate (12), the output end of the telescopic rod (51) facing the first frame plate (11), a movable plate (52) being fixed to the output end of the telescopic rod (51), and an end of the push plate (6) facing the first frame plate (11) being rotatably mounted on the movable plate (52).

4. The multi-pipeline switching device for filling paste in a mine according to claim 3, characterized in that: The rotating mechanism (7) comprises a motor (71) and a gear ring (73); the gear ring (73) is coaxially fixed to the push plate (6); and a gear (72) meshingly connected to the gear ring (73) is installed at the output end of the motor (71).

5. The multi-pipeline switching device for filling mine paste according to claim 2, characterized in that: The sleeve (4) comprises an inner sleeve (41) and an outer sleeve (42) sleeved on the outlet side of the inner sleeve (41); the inlet of the inner sleeve (41) is sealed and slidably connected to the outlet of the transfer tube (3); the outlet of the inner sleeve (41) is provided with a plug (412) for sealing the lumen of the inner sleeve (41); and a through hole (411) communicating with the lumen of the outer sleeve (42) is provided on the wall of the inner sleeve (41) near the outlet.

6. The multi-pipeline switching device for filling paste in a mine according to claim 5, characterized in that: The outlet end of the outer sleeve (42) is arranged flush with an end of the plug (412) close to the switching chamber (131).

7. The multi-pipeline switching device for filling paste in a mine according to claim 5, characterized in that: The fixed disk (8) is provided with a communication groove (81) corresponding to the outlet pipe (9); the inlet of the outlet pipe (9) coaxially penetrates the communication groove (81); the inlet of the outlet pipe (9) is provided with a blocking block (94) for blocking the lumen of the outlet pipe (9); a second through hole (93) is provided on the wall of the outlet pipe (9) between the blocking block (94) and the bottom of the communication groove (81); an annular cavity (82) is formed between the outlet pipe (9) and the communication groove (81); a piston ring (91) for controlling the communication between the second through hole (93) and the switching cavity (131) is installed in the annular cavity (82); the piston ring (91) is connected to the bottom of the communication groove (81) via a spring (92).

8. The multi-pipeline switching device for filling paste in a mine according to claim 7, characterized in that: The outlet of the outer sleeve (42) passes through one end of the push plate (6) close to the switching chamber (131), the inner diameter of the outer tube wall of the outer sleeve (42) is the same as the inner diameter of the annular wall of the annular chamber (82), and the inner diameter of the outer wall of the plug (412) is the same as the inner diameter of the inner tube wall of the outlet pipe (9).

9. The multi-pipeline switching device for filling paste in a mine according to claim 2, characterized in that: A pressure sensor (103) for monitoring the pressure of the switching chamber (131) is installed at the inlet of the return pipe (10).

10. A method for switching multiple pipelines for filling paste in a mine, which adopts the multiple pipeline switching device for filling paste in a mine as claimed in any one of claims 2 to 9, characterized in that: It includes the following steps: Step 1: The push-pull mechanism (5) adjusts the push plate (6) to move away from the fixed plate (8) until the sleeve (4) and the connected outlet pipe (9) are separated from each other, and the outlet of the sleeve (4) is connected to the switching chamber (131); Step 2: The rotating mechanism (7) controls the push plate (6) to rotate until the sleeve (4) is aligned with the outlet pipe (9) to be switched and not connected; Step 3: The push-pull mechanism (5) adjusts the push plate (6) to approach the fixed plate (8) until the sleeve (4) is docked with the outlet pipe (9) to be switched and not docked. At the same time, the reflux pump (102) sucks the paste in the switching chamber (131) and introduces it into the inlet pipe (2).

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