CN113006864A - Coal mine goaf bag type filling device - Google Patents
Coal mine goaf bag type filling device Download PDFInfo
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- CN113006864A CN113006864A CN202110339520.5A CN202110339520A CN113006864A CN 113006864 A CN113006864 A CN 113006864A CN 202110339520 A CN202110339520 A CN 202110339520A CN 113006864 A CN113006864 A CN 113006864A
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- air bag
- air
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- barrel
- valve core
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- 239000003245 coal Substances 0.000 title claims abstract description 15
- 230000003139 buffering effect Effects 0.000 claims abstract description 51
- 230000001105 regulatory effect Effects 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 238000004806 packaging method and process Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 238000009459 flexible packaging Methods 0.000 claims description 3
- 239000003566 sealing material Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims 1
- 239000011435 rock Substances 0.000 description 21
- 239000007789 gas Substances 0.000 description 17
- 230000003068 static effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000000872 buffer Substances 0.000 description 6
- 239000002775 capsule Substances 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/08—Filling-up hydraulically or pneumatically
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to a coal mine goaf bag type filling device, which comprises a filling bag, a buffering air bag and an air pressure source with a valve, wherein the valve of the air pressure source is communicated with a pressure control valve, the other end of the pressure control valve is communicated with the buffering air bag, the filling bag is formed by connecting a first air bag and a second air bag, the first air bag is communicated with the buffering air bag, a box body is arranged between the air pressure source and the first air bag, the buffering air bag is arranged in the box body, a pressing plate is connected on the box body in a sliding manner, a first push spring is connected on the pressing plate, a pressure release valve is arranged on the buffering air bag, a regulating valve is arranged in the filling bag, the first air bag is communicated with the second air bag through the regulating valve, a one-way valve is communicated between the first air bag and the second air bag, an annular groove is arranged on the outer wall of the second air bag, a packaging bag is filled with, the problems that the existing device is long in operation time, incapable of automatically compensating air pressure and poor in air tightness are solved.
Description
Technical Field
The invention relates to the technical field of coal mine goaf filling equipment, in particular to a coal mine goaf bag type filling device.
Background
The existing air bag type filling device needs to be operated by workers on site in the process of inflation, and the safety of the workers is difficult to ensure along with the increase of the operation time; after the air bag is full of air, the air in the air bag cannot be automatically supplemented after the air is dissipated, and the reliability of the air bag is difficult to ensure; when the air bag is filled with gas and contacts with the rock wall of the mine cavity, gaps inevitably exist, and harmful gas generated in the goaf leaks to the outside along the gaps, so that the environment is polluted.
Disclosure of Invention
Aiming at the situation, in order to make up for the technical defects in the prior art, the invention provides a coal mine goaf bag type filling device, which aims to solve the problems that the prior device has long operation time, cannot automatically compensate air pressure and has poor air tightness.
The technical scheme for solving the problem is as follows: the utility model provides a coal mine goaf bag type filling device, including filling the bag, buffering gasbag and the pressure source that has the valve, the pressure source, buffering gasbag and filling bag are arranged along transversely in proper order, the intercommunication has the accuse to press the valve on the valve of pressure source, the other end of accuse pressure valve is through pipeline and buffering gasbag intercommunication, when the internal pressure of buffering gasbag did not reach the setting value, the accuse is pressed the valve and is kept the intercommunication and make the internal gas of pressure source aerify to the buffering gasbag, when the internal pressure of buffering gasbag reached the setting value, thereby the accuse was pressed the valve and is closed and cut off the intercommunication between pressure source and the buffering gasbag.
The filling bag is connected by first gasbag and the second gasbag that is located first gasbag right side and forms, the volume of first gasbag is less than the volume of second gasbag, the pipeline intercommunication between first gasbag and the buffering gasbag, be equipped with the box between atmospheric pressure source and the first gasbag, the buffering gasbag is arranged in the box, vertical sliding connection has the clamp plate that is located the box on the box, be connected with on the clamp plate and be located the clamp plate up end and the box inboard between the upper wall push away the spring, the first spring that pushes away gives the decurrent thrust of clamp plate, be equipped with the relief valve on the buffering gasbag.
The filling bag is internally provided with a regulating valve, the first air bag is communicated with the second air bag through the regulating valve, a one-way valve is communicated between the first air bag and the second air bag, the regulating valve cuts off the communication between the first air bag and the second air bag during the inflation stage, so that the air pressure source only inflates the first air bag, when the air pressure in the first air bag reaches a set value, the pressure control valve is communicated with the first air bag and the second air bag, the air pressure source inflates the second air bag while the air pressure in the first air bag is unchanged, when the inflation is finished, the pressure control valve stops the air flow from the first air bag to the second air bag, and when the air pressure in the second air bag is too high, the air in the second air bag flows into the first air bag through the one-way valve.
An annular groove surrounding the transverse axis of the second air bag is formed in the outer wall of the second air bag, a flexible packaging bag is arranged on the annular groove, filling materials are filled in the packaging bag, and after the second air bag is inflated and expanded and is in contact with the rock wall of the mine cave, the filling materials are discharged out of the packaging bag under the pressure between the second air bag and the rock wall of the mine cave, so that the filling materials are filled between the rock wall of the mine cave and the second air bag, and a gap between the second air bag and the rock wall of the mine cave is blocked; the first air bag is provided with a first exhaust pipe with a valve, the first exhaust pipe is communicated with the first air bag, the first air bag is provided with a second exhaust pipe with a valve, and the second exhaust pipe is communicated with the second air bag.
Preferably, a supporting device is arranged on the first air bag and comprises a plurality of first supporting rods arranged side by side, the first supporting rods are uniformly distributed on the first air bag along the front-back direction, one ends of the first supporting rods are hinged to the left side wall of the first air bag through shafts arranged along the front-back direction, the first supporting rods are located on the left side of the first air bag, the other ends of the first supporting rods are hinged to a first friction block through the shafts arranged along the front-back direction, a plurality of cones with downward vertexes are arranged on the lower end face of the first friction block, a second supporting rod is hinged to the first supporting rods through the shafts arranged along the front-back direction and is located between the first supporting rods and the first air bag, the other ends of the second supporting rods are hinged to a second friction block, a plurality of cones with downward vertexes are arranged on the lower end face of the second friction block, a connecting rod is hinged to the first supporting rods through the shafts arranged along the front-back direction, and the hinged portion between the connecting rod and the first supporting rods are located between the first supporting Between the articulated portion, be equipped with the slider that the shape is the cuboid on the connecting rod, be equipped with two cylinders parallel with second branch axis on the second branch, the axis of second branch and the axis of two cylinders are located same vertical plane, when the contained angle of first branch and horizontal plane is less than the setting value, the slider card is gone into between two cylinders, makes second branch locking on first branch, when the contained angle of first branch and horizontal plane reaches the setting value, slider and cylinder separation, second branch deflects downwards under the effect of gravity.
Preferably, the pressure control valve comprises a first barrel body, the first barrel body is connected with a first barrel body arranged in the first barrel body, the first barrel body is coaxial with the first barrel body, an opening of the first barrel body faces to the right, the outer diameter of the first barrel body is equal to the inner diameter of the first barrel body, so that the first barrel body divides the inner space of the first barrel body into a first cavity at the left part and a second cavity at the right part, a first air groove is formed in the inner side wall of the first barrel body and communicates the first cavity with the second cavity, a first valve core arranged in the first barrel body is connected on the first barrel body in a limiting sliding manner along the axial direction of the first barrel body, the first valve core is arranged at the right side of the first barrel body, the first valve core is a barrel body with an opening facing to the right, a second push spring is connected on the first barrel body and is positioned between the left end face of the first valve core and the inner bottom wall of the first barrel body, the second push spring applies right thrust to the first valve core, the outer diameter of the first valve core is equal to the inner diameter of the first barrel body so that the outer wall, when the air pressure in the buffering air bag is not lower than the set value, the first valve core overcomes the elastic force of the second push spring to move leftwards under the action of the air pressure, so that the first through hole is positioned in the first barrel, the side wall of the first valve core blocks the first air groove, and the air pressure source is blocked from inflating into the buffering air bag.
Preferably, the regulating valve comprises a second barrel body, a second barrel body arranged in the second barrel body is connected to the second barrel body, the second barrel body is coaxial with the second barrel body, an opening of the second barrel body faces to the right, the outer diameter of the second barrel body is equal to the inner diameter of the second barrel body, so that the second barrel body divides the inner space of the second barrel body into a third chamber at the left part and a fourth chamber at the right part, a second air groove is formed in the inner side wall of the second barrel body and communicates the third chamber with the fourth chamber, a second valve core arranged in the second barrel body is connected to the second barrel body in a limiting and sliding manner along the axial direction of the second barrel body, the second valve core is arranged at the right side of the second barrel body, the second valve core is a barrel body with an opening facing to the right, a third push spring is connected to the second barrel body and is positioned between the left end face of the second valve core and the inner bottom wall of the second barrel body, the third push spring gives a pushing force to the second valve core, the outer diameter of the second valve core is equal to the inner diameter of the second barrel body, a plurality of second through holes are uniformly distributed on the side wall of the second valve core in the circumference, the second through holes are communicated with a second air groove and the second valve core, a third valve core arranged in the second cylinder is connected on the second cylinder in a limiting and sliding way along the axial direction of the second cylinder, the third valve core is arranged on the left side of the second cylinder, the third valve core is a cylinder with an opening facing to the left, a fourth push spring is connected on the second cylinder, the fourth push spring is positioned between the right end surface of the third valve core and the outer bottom wall of the second cylinder, the fourth push spring provides leftward thrust for the third valve core, the outer diameter of the third valve core is equal to the inner diameter of the second cylinder, so that the outer wall of the third valve core is in sealed sliding contact with the inner wall of the second cylinder, a plurality of third through holes are uniformly distributed on the circumference on the side wall of the third valve core, the third through holes are communicated with the second air groove and the third valve core, when the pressure in the first air bag is lower than a set value, the, at the moment, the third through hole is in contact with the inner wall of the second barrel body so as to block the third through hole from being communicated with the second air groove, when the air pressure in the first air bag reaches a set value, the third valve core overcomes the elastic force of the fourth push spring to move rightwards under the action of the air so as to enable the first through hole to be communicated with the second air groove, the air in the first air bag enters the second air bag through the third through hole, the second air groove and the second through hole, the air pressure in the first air bag is inflated into the second air bag under the condition that the air pressure is not smaller than the set value, and when the air pressure in the second air bag reaches the set value, the second valve core overcomes the elastic force of the third push spring to move leftwards under the action of the air pressure so as to enable the second through hole to be located in the second barrel body, the side wall of the second valve core blocks the second air groove, and.
Compared with the prior art, the invention has the following advantages:
1. when inflating, first gasbag is full of gas earlier fast and extrudees the cliff, and first gasbag drives second branch automatically regulated position on the first branch and fixes at the in-process of inflation, and first gasbag, first branch and second branch have played the supporting role this moment, have reduced operating time.
2. When the air pressure in the first air bag rises, due to the action of the regulating valve, the air in the first air bag is discharged into the buffering air bag and enables the first push spring to compress and inflate, so that the pressure of the first air bag is reduced under the action of not influencing the pressure of the second air bag, and when the air pressure in the first air bag is reduced, the buffering air bag discharges the air into the first air bag under the action of the first push spring, so that the influence on the second air bag due to the change of the pressure in the first air bag is avoided.
3. The buffering air bag does not consume the stored energy of the air pressure source within the threshold value and automatically buffers the air pressure in the first air bag, so that the stored energy of the air pressure source is saved, and the working time of the device is prolonged.
4. After the second air bag is inflated and expanded and is in contact with the rock wall of the mine cavity, the filling material is discharged out of the packaging bag under the pressure between the second air bag and the rock wall of the mine cavity, so that the filling material is filled between the rock wall of the mine cavity and the second air bag, a gap between the second air bag and the rock wall of the mine cavity is sealed, and the tightness of the filling bag is improved.
5. In the use process, the cones on the first friction block 16 and the second friction block 18 are deeper into the ground, so that the maximum static friction force between the first friction block 16 and the ground and the maximum static friction force between the second friction block 18 and the ground are larger and larger respectively, and the device is more stable.
Drawings
Fig. 1 is a front view of the present invention.
FIG. 2 is a schematic view of a partial structure of the present invention.
Fig. 3 is a perspective view of a partial structure of the present invention.
FIG. 4 is a partial enlarged view a of FIG. 3 according to the present invention.
Fig. 5 is a partial enlarged view b of fig. 3 according to the present invention.
Fig. 6 is a top view of the present invention.
Fig. 7 is a sectional view taken along line a-a of fig. 6 in accordance with the present invention.
In the figure: filling the capsule 1; a buffer airbag 2; a gas pressure source 3; a pressure control valve 4; a first air bag 5; a second airbag 6; a box body 7; a pressing plate 8; a first push spring 9; a regulating valve 10; a check valve 11; an annular groove 12; a first exhaust pipe 13; a second exhaust pipe 14; a first strut 15; a first friction block 16; a second strut 17; a second friction block 18; a connecting rod 19; a slider 20; a cylindrical body 21; a first barrel 22; a first barrel 23; a first air tank 24; a first spool 25; a second push spring 26; a first through hole 27; a second cylinder 28; the second tub 29; a second gas tank 30; the second spool 31; a third push spring 32; a second through hole 33; a third valve element 34; a fourth push spring 35; and a third through hole 36.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to fig. 1 to 7.
The filling bag 1 is formed by connecting a first air bag 5 and a second air bag 6 positioned at the right side of the first air bag 5, the volume of the first air bag 5 is smaller than that of the second air bag 6, the first air bag 5 is communicated with the buffering air bag 2 through a pipeline, a box body 7 is arranged between an air pressure source 3 and the first air bag 5, the buffering air bag 2 is arranged in the box body 7, a pressing plate 8 positioned in the box body 7 is vertically and slidably connected onto the box body 7, a first push spring 9 positioned between the upper end surface of the pressing plate 8 and the inner upper wall of the box body 7 is connected onto the pressing plate 8, the first push spring 9 gives downward thrust to the pressing plate 8, a pressure release valve is arranged on the buffering air bag 2, when the air pressure in the first air bag 5 is increased, the air in the first air bag 5 is discharged into the buffering air bag 2, the buffering air bag 2 expands to push the pressing plate 8 upwards so as to compress the first push spring 9, so that the, in 2 interior gas inflows first gasbag 5 of buffering gasbag, first push spring 9 pushes down clamp plate 8 and makes clamp plate 8 extrude buffering gasbag 2 downwards with the atmospheric pressure in the increase buffering gasbag 2, make the atmospheric pressure in buffering gasbag 2 and the first gasbag 5 not consume under the energy storage self-adaptation adjustment of atmospheric pressure source 3 in the threshold value, the live time of device has been increased, when 2 interior atmospheric pressure of buffering gasbag was too high, discharge unnecessary gas through the relief valve, in order to avoid damaging buffering gasbag 2 and first gasbag 5.
A regulating valve 10 is arranged in the filling bag 1, the first air bag 5 is communicated with the second air bag 6 through the regulating valve, a one-way valve 11 is communicated between the first air bag 5 and the second air bag 6, the regulating valve 10 cuts off the communication between the first air bag 5 and the second air bag 6 during the inflation stage, so that the air pressure source 3 only inflates the first air bag 5, the first air bag 5 rapidly expands to support the second air bag 6, when the air pressure in the first air bag 5 reaches a set value, the regulating valve 10 is communicated with the first air bag 5 and the second air bag 6, so that the air pressure source 3 inflates the second air bag 6 while the air pressure in the first air bag 5 is unchanged, when the inflation is finished, the regulating valve 10 stops the air flow from the first air bag 5 to the second air bag 6, the air pressure in the second air bag 6 is not influenced by the change of the pressure in the first air bag 5, when the air pressure in the second air bag 6 is too high, the air in the second air bag 6 flows into the first air bag 5 through the one, avoiding damage to the second balloon 6.
The outer wall of the second air bag 6 is provided with an annular groove 12 surrounding the transverse axis of the second air bag 6, the annular groove 12 is provided with a flexible packaging bag, filling materials are filled in the packaging bag, after the second air bag 6 is inflated and expanded and is in contact with the rock wall of the mine cave, the filling materials are discharged out of the packaging bag under the pressure between the second air bag 6 and the rock wall of the mine cave, so that the filling materials are filled between the rock wall of the mine cave and the second air bag 6, gaps between the second air bag 6 and the rock wall of the mine cave are sealed, and the tightness of the device is improved.
The first air bag 5 is provided with a first exhaust pipe 13 with a valve, the first exhaust pipe 13 is communicated with the first air bag 5, the first air bag 5 is provided with a second exhaust pipe 14 with a valve, and the second exhaust pipe 14 is communicated with the second air bag 6.
When the filling bag 1 is subjected to a rightward force in an elevation view, the first strut 15 is subjected to the rightward force of the filling bag 1, the first strut 15 generates a clockwise moment under the action of the second strut 17, the first strut 15 gives a force to the second strut 17 in a downward and rightward direction, namely, the second friction block 18 on the second strut 17 receives a force in a downward and rightward direction, so that the cone on the second friction block 18 penetrates into the ground, the second friction block 18 generates a friction force and a supporting force with the ground so as to give a reaction force to the second strut 17 in an upward and leftward direction, namely, the first strut 15 receives a reaction force to the second strut 17 in an upward and leftward direction, and the first friction block 16 generates a friction force to the ground in a leftward direction, so that the first strut 15 counteracts the rightward pulling force of the filling bag 1 under the combined action of the friction force of the first friction block 16 and the reaction force of the second strut 17, namely the first strut 15, and the right force of the filling capsule 1 is counteracted by the combined force of the left friction force between the filling capsule 1 and the rock wall and the left pulling force of the first strut 15; similarly, when the filling bag 1 is subjected to a leftward force, the first strut 15 is subjected to the leftward force of the filling bag 1, under the action of the second strut 17, the first strut 15 generates a moment in the counterclockwise direction, so that the first friction block 16 is subjected to a downward force in the leftward direction, so that the cone on the first friction block 16 penetrates deeper into the ground, the first friction block 16 generates a friction force and a supporting force with the ground so as to provide a reaction force to the first strut 15 in the upward right direction, meanwhile, the first strut 15 provides a pulling force to the second strut 17 in the leftward direction, the second friction block 18 on the second strut 17 generates a friction force in the rightward direction with the ground so that the second strut 17 provides a reaction force to the first strut 15 in the rightward direction, the first strut 15 counteracts the leftward thrust force of the filling bag 1 under the reaction force of the first friction block 16 and the reaction force of the second strut 17, so as to keep the filling bag 1 from being moved by an external force, and in the use process, the cones on the first friction block 16 and the second friction block 18 are deeper into the ground, so that the maximum static friction force between the first friction block 16 and the ground and the maximum static friction force between the second friction block 18 and the ground are larger and larger respectively, and the stability of the device is improved.
Example 4, based on example 1, the control valve 10 includes a second cylinder 28, a second barrel 29 disposed in the second cylinder 28 is connected to the second cylinder 28, the second barrel 29 is coaxial with the second cylinder 28, the second barrel 29 opens to the right, the outer diameter of the second barrel 29 is equal to the inner diameter of the second cylinder 28, so that the second barrel 29 divides the inner space of the second cylinder 28 into a third chamber at the left and a fourth chamber at the right, a second air groove 30 is formed on the inner side wall of the second cylinder 28, the third chamber and the fourth chamber are communicated by the second air groove 30, a second valve core 31 disposed in the second cylinder 28 is slidably connected to the second cylinder 28 along the axial direction of the second cylinder 28, the second valve core 31 is disposed at the right side of the second cylinder 29, the second valve core 31 is a barrel opening to the right, a third push spring 32 is connected to the second barrel 29, the third push spring 32 is disposed between the left end surface of the second valve core 31 and the inner bottom wall of the second cylinder 29, the third push spring 32 applies a right pushing force to the second valve core 31, the outer diameter of the second valve core 31 is equal to the inner diameter of the second barrel 29 so that the outer wall of the second valve core 31 is in sealing sliding contact with the inner wall of the second barrel 29, a plurality of second through holes 33 are circumferentially distributed on the side wall of the second valve core 31, the second through holes 33 communicate with the second air groove 30 and the second valve core 31, a third valve core 34 disposed in the second barrel 28 is slidably connected to the second barrel 28 along the axial direction of the second barrel 28, the third valve core 34 is disposed on the left side of the second barrel 29, the third valve core 34 is a barrel opening to the left, a fourth push spring 35 is connected to the second barrel 29, the fourth push spring 35 is disposed between the right end surface of the third valve core 34 and the outer bottom wall of the second barrel 29, the fourth push spring 35 applies a left pushing force to the third valve core 34, the outer diameter of the third valve core 34 is equal to the inner diameter of the second barrel 28 so that the outer wall of the third valve core 34 is, a plurality of third through holes 36 are uniformly distributed on the side wall of the third valve core 34 around the circumference, the third through holes 36 are communicated with the second air groove 30 and the third valve core 34, when the air pressure in the first air bag 5 is lower than a set value, the fourth push spring 35 pushes the third valve core 34 leftwards to place the second valve core 31 at the leftmost end, at the moment, the third through holes 36 are contacted with the inner wall of the second cylinder 28 to block the communication between the third through holes 36 and the second air groove 30, when the air pressure in the first air bag 5 reaches the set value, the third valve core 34 moves rightwards under the action of the air against the elastic force of the fourth push spring 35 to enable the first through holes 27 to be communicated with the second air groove 30, the air in the first air bag 5 enters the second air bag 6 through the third through holes 36, the second air groove 30 and the second through holes 33 to enable the air pressure in the first air bag 5 to be inflated into the second air bag 6 under the condition that the air pressure in the first air bag 5 is not less than the set value, the second valve core 31 moves leftwards against the elastic force of the third push spring 32 under the action of the air pressure, so that the second through hole 33 is positioned in the second barrel body 29, the side wall of the second valve core 31 blocks the second air groove 30, and the first air bag 5 is blocked from inflating into the second air bag 6.
In the embodiment 5, on the basis of the embodiment 1, the filling material is a high-molecular mine sealing material, and the high-molecular mine sealing material is filled in the gap between the filling bag 1 and the rock wall of the mine cavity, so that toxic gas such as gas is effectively prevented from leaking.
When the device is used, the device is placed at a proper position, the valve of the air pressure source 3 is opened after the first friction block 16 is fixed, the air in the air pressure source 3 flows into the buffering air bag 2 through the pressure control valve 4, the air in the buffering air bag 2 flows into the first air bag 5, the first air bag 5 gradually expands upwards along with the inflow of the air, so that the hinged part of the first support rod 15 and the first air bag 5 is driven to move upwards, the first support rod 15 drives the second support rod 17 to move upwards, when the first air bag 5 expands upwards to be in contact with the rock wall of a mine cave, the slide block 20 on the connecting rod 19 is separated from the cylinder 21 on the second support rod 17, the second support rod 17 deflects downwards under the action of gravity to enable the second friction block 18 to smash on the ground, the first air bag 5, the first support rod 15 and the second support rod 17 form a previous supporting function, so that the filling effect cannot be influenced by the movement of an external force when the second air bag 6 is, then when the air pressure in the first air bag 5 reaches a set value, the third valve core 34 moves to the right against the elastic force of the fourth push spring 35 under the action of the air, so that the first through hole 27 is communicated with the second air groove 30, the air in the first air bag 5 enters the second air bag 6 through the third through hole 36, the second air groove 30 and the second through hole 33, so that the air pressure source 3 inflates the second air bag 6 while the air pressure in the first air bag 5 is unchanged, when the air pressure in the second air bag 6 reaches the set value, the second valve core 31 moves to the left against the elastic force of the third push spring 32 under the action of the air pressure, so that the second through hole 33 is positioned in the second barrel body 29, the side wall of the second valve core 31 blocks the second air groove 30, the inflation of the first air bag 5 into the second air bag 6 is blocked, then the first valve core 25 moves to the left against the elastic force of the second push spring 26 under the action of the air pressure, so that the first through hole 27 is positioned in the first barrel body 23, the side wall of the first valve core 25 blocks the first air groove 24, so that the air pressure source 3 is blocked from inflating the buffer air bag 2, and the inflation is finished;
when the filling bag 1 is subjected to a rightward force in an elevation view, the first strut 15 is subjected to the rightward force of the filling bag 1, the first strut 15 generates a clockwise moment under the action of the second strut 17, the first strut 15 gives a force to the second strut 17 in a downward and rightward direction, namely, the second friction block 18 on the second strut 17 receives a force in a downward and rightward direction, so that the cone on the second friction block 18 penetrates into the ground, the second friction block 18 generates a friction force and a supporting force with the ground so as to give a reaction force to the second strut 17 in an upward and leftward direction, namely, the first strut 15 receives a reaction force to the second strut 17 in an upward and leftward direction, and the first friction block 16 generates a friction force to the ground in a leftward direction, so that the first strut 15 counteracts the rightward pulling force of the filling bag 1 under the combined action of the friction force of the first friction block 16 and the reaction force of the second strut 17, namely the first strut 15, and the right force of the filling capsule 1 is counteracted by the combined force of the left friction force between the filling capsule 1 and the rock wall and the left pulling force of the first strut 15; similarly, when the filling bag 1 is subjected to a leftward force, the first strut 15 is subjected to the leftward force of the filling bag 1, under the action of the second strut 17, the first strut 15 generates a moment in the counterclockwise direction, so that the first friction block 16 is subjected to a downward force in the leftward direction, so that the cone on the first friction block 16 penetrates deeper into the ground, the first friction block 16 generates a friction force and a supporting force with the ground so as to provide a reaction force to the first strut 15 in the upward right direction, meanwhile, the first strut 15 provides a pulling force to the second strut 17 in the leftward direction, the second friction block 18 on the second strut 17 generates a friction force in the rightward direction with the ground so that the second strut 17 provides a reaction force to the first strut 15 in the rightward direction, the first strut 15 counteracts the leftward thrust force of the filling bag 1 under the reaction force of the first friction block 16 and the reaction force of the second strut 17, so as to keep the filling bag 1 from being moved by an external force, and in the use process, the cones on the first friction block 16 and the second friction block 18 are deeper into the ground, so that the maximum static friction force between the first friction block 16 and the ground and the maximum static friction force between the second friction block 18 and the ground are larger and larger respectively.
Compared with the prior art, the invention has the following advantages:
1. when inflating, first gasbag is full of gas earlier fast and extrudees the cliff, and first gasbag drives second branch automatically regulated position on the first branch and fixes at the in-process of inflation, and first gasbag, first branch and second branch have played the supporting role this moment, have reduced operating time.
2. When the air pressure in the first air bag rises, due to the action of the regulating valve, the air in the first air bag is discharged into the buffering air bag and enables the first push spring to compress and inflate, so that the pressure of the first air bag is reduced under the action of not influencing the pressure of the second air bag, and when the air pressure in the first air bag is reduced, the buffering air bag discharges the air into the first air bag under the action of the first push spring, so that the influence on the second air bag due to the change of the pressure in the first air bag is avoided.
3. The buffering air bag does not consume the stored energy of the air pressure source within the threshold value and automatically buffers the air pressure in the first air bag, so that the stored energy of the air pressure source is saved, and the working time of the device is prolonged.
4. After the second air bag is inflated and expanded and is in contact with the rock wall of the mine cavity, the filling material is discharged out of the packaging bag under the pressure between the second air bag and the rock wall of the mine cavity, so that the filling material is filled between the rock wall of the mine cavity and the second air bag, a gap between the second air bag and the rock wall of the mine cavity is sealed, and the tightness of the filling bag is improved.
5. In the use process, the cones on the first friction block 16 and the second friction block 18 are deeper into the ground, so that the maximum static friction force between the first friction block 16 and the ground and the maximum static friction force between the second friction block 18 and the ground are larger and larger respectively, and the device is more stable.
Claims (7)
1. A coal mine goaf bag type filling device comprises a filling bag (1), a buffering air bag (2) and an air pressure source (3) with a valve, and is characterized in that the air pressure source (3), the buffering air bag (2) and the filling bag (1) are sequentially arranged along the transverse direction, a pressure control valve (4) is communicated on the valve of the air pressure source (3), and the other end of the pressure control valve (4) is communicated with the buffering air bag (2) through a pipeline;
the filling bag (1) is formed by connecting a first air bag (5) and a second air bag (6) positioned on the right of the first air bag (5), the first air bag (5) is communicated with the buffering air bag (2) through a pipeline, a box body (7) is arranged between the air pressure source (3) and the first air bag (5), the buffering air bag (2) is arranged in the box body (7), a pressing plate (8) positioned in the box body (7) is vertically and slidably connected to the box body (7), and a first push spring (9) positioned between the upper end surface of the pressing plate (8) and the inner upper wall of the box body (7) is connected to the pressing plate (8);
a regulating valve (10) is arranged in the filling bag (1), the first air bag (5) is communicated with the second air bag (6) through the regulating valve, and a one-way valve (11) is communicated between the first air bag (5) and the second air bag (6);
an annular groove (12) surrounding the transverse axis of the second air bag (6) is formed in the outer wall of the second air bag (6), a flexible packaging bag is arranged on the annular groove (12), and filling materials are filled in the packaging bag;
be equipped with first blast pipe (13) of taking the valve on first gasbag (5), first blast pipe (13) and first gasbag (5) intercommunication are equipped with second blast pipe (14) of taking the valve on first gasbag (5), second blast pipe (14) and second gasbag (6) intercommunication.
2. The coal mine goaf bag-type filling device according to claim 1, characterized in that a supporting device is arranged on the first air bag (5), the supporting device comprises a plurality of first supporting rods (15) arranged side by side, one end of each first supporting rod (15) is hinged on the left side wall of the first air bag (5) through a shaft arranged along the front-back direction, the first supporting rod (15) is positioned at the left side of the first air bag (5), the other end of each first supporting rod (15) is hinged with a first friction block (16) through a shaft arranged along the front-back direction, a plurality of cones with downward vertexes are arranged on the lower end face of each first friction block (16), a second supporting rod (17) is hinged on each first supporting rod (15) through a shaft arranged along the front-back direction, the second supporting rod (17) is positioned between the first supporting rod (15) and the first air bag (5), the other end of each second supporting rod (17) is connected with a second friction block (18), a plurality of cones with downward vertexes are arranged on the lower end face of the second friction block (18), a connecting rod (19) is hinged on the first supporting rod (15) through a shaft arranged along the front-back direction, a hinged part between the connecting rod (19) and the first supporting rod (15) is positioned between the hinged part between the first supporting rod (15) and the second supporting rod (17) and the hinged part between the first supporting rod (15) and the first air bag (5), a sliding block (20) in a cuboid shape is arranged on the connecting rod (19), two cylinders (21) parallel to the axis of the second supporting rod (17) are arranged on the second supporting rod (17), the axis of the second supporting rod (17) and the axes of the two cylinders (21) are positioned in the same vertical plane, when the included angle between the first supporting rod (15) and the horizontal plane is smaller than a set value, the sliding block (20) is clamped between the two cylinders (21), so that the second supporting rod (17) is locked on the first supporting rod (15, when the included angle between the first supporting rod (15) and the horizontal plane reaches a set value, the sliding block (20) is separated from the cylinder (21), and the second supporting rod (17) deflects downwards under the action of gravity.
3. The coal mine goaf bag-type filling device according to claim 1, wherein the pressure control valve (4) comprises a first barrel (22), the first barrel (22) is connected with a first barrel (23) arranged in the first barrel (22), the first barrel (23) is coaxial with the first barrel (22), the opening of the first barrel (23) faces to the right, the outer diameter of the first barrel (23) is equal to the inner diameter of the first barrel (22) so that the first barrel (23) divides the inner space of the first barrel (22) into a first chamber at the left part and a second chamber at the right part, the inner side wall of the first barrel (22) is provided with a first air groove (24), the first air groove (24) communicates the first chamber and the second chamber, the first barrel (22) is connected with a first valve core (25) arranged in the first barrel (22) in a sliding manner along the axial limiting direction of the first barrel (22), the first valve core (25) is arranged at the right side of the first barrel (23), first case (25) are the staving that the opening is rightwards, be connected with the second on the first staving (23) and push away spring (26), the second pushes away spring (26) and is located between first case (25) left end face and the bottom wall in first staving (23), the second pushes away spring (26) and gives first case (25) thrust to the right, the outer wall of first case (25) and the inner wall sealing sliding contact of first staving (23), it has a plurality of first through-holes (27) to go up the circumference equipartition on first case (25) lateral wall, first through-hole (27) intercommunication first air pocket (24) and first case (25).
4. The coal mine goaf bag-type filling device according to claim 1, characterized in that the control valve (10) comprises a second cylinder (28), the second cylinder (28) is connected with a second cylinder (29) disposed in the second cylinder (28), the second cylinder (29) and the second cylinder (28) are coaxial, the opening of the second cylinder (29) faces right, the outer diameter of the second cylinder (29) is equal to the inner diameter of the second cylinder (28) so that the second cylinder (29) divides the inner space of the second cylinder (28) into a third chamber at the left and a fourth chamber at the right, the inner side wall of the second cylinder (28) is provided with a second air groove (30), the third chamber and the fourth chamber are communicated by the second air groove (30), the second cylinder (28) is slidably connected with a second valve core (31) disposed in the second cylinder (28) along the axial limit of the second cylinder (28), the second valve core (31) is disposed at the right of the second cylinder (29), the second valve core (31) is a barrel body with an opening facing to the right, a third push spring (32) is connected on the second barrel body (29), the third push spring (32) is positioned between the left end surface of the second valve core (31) and the inner bottom wall of the second barrel body (29), the third push spring (32) provides the right thrust for the second valve core (31), the outer wall of the second valve core (31) is in sealing sliding contact with the inner wall of the second barrel body (29), a plurality of second through holes (33) are uniformly distributed on the periphery of the side wall of the second valve core (31), the second through holes (33) are communicated with a second air groove (30) and the second valve core (31), the second barrel body (28) is connected with a third valve core (34) arranged in the second barrel body (28) in a limiting sliding manner along the axial direction of the second barrel body (28), the third valve core (34) is arranged on the left side of the second barrel body (29), the third valve core (34) is a left barrel body with an opening facing to the left, and a fourth push spring (35), the fourth push spring (35) is located between the right end face of the third valve core (34) and the outer bottom wall of the second barrel body (29), the fourth push spring (35) pushes the third valve core (34) leftwards, the outer diameter of the third valve core (34) is equal to the inner diameter of the second barrel body (28) so that the outer wall of the third valve core (34) is in sealing sliding contact with the inner wall of the second barrel body (28), a plurality of third through holes (36) are uniformly distributed on the side wall of the third valve core (34) in the circumferential direction, and the third through holes (36) are communicated with the second air groove (30) and the third valve core (34).
5. The coal mine goaf pocket filling device according to any one of claims 1 to 4, wherein the filling material is a polymer mine hole sealing material.
6. The coal mine goaf pocket filling device according to any one of claims 1 to 4, characterized in that the air pressure source (3) is a portable air compressor with a battery.
7. The coal mine goaf bag filling device according to any one of claims 1 to 4, characterized in that the air pressure source (3) is a high pressure gas cylinder.
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| CN113006864B (en) | 2023-09-29 |
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