CN112901256A - Device and method for controlling falling speed of solid material in large vertical depth feeding well - Google Patents
Device and method for controlling falling speed of solid material in large vertical depth feeding well Download PDFInfo
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- CN112901256A CN112901256A CN202110292597.1A CN202110292597A CN112901256A CN 112901256 A CN112901256 A CN 112901256A CN 202110292597 A CN202110292597 A CN 202110292597A CN 112901256 A CN112901256 A CN 112901256A
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- 239000011343 solid material Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 238000009423 ventilation Methods 0.000 claims description 39
- 238000004891 communication Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 15
- 239000000463 material Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/04—Transport of mined material in gravity inclines; in staple or inclined shafts
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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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
- E21F17/12—Dam doors
-
- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/16—Modification of mine passages or chambers for storage purposes, especially for liquids or gases
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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)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The invention relates to a solid material falling speed control device and a method in a large vertical-depth feeding well, wherein the solid material falling speed control device in the large vertical-depth feeding well comprises a feeding well, a storage bin, a chamber, a connection roadway and a sealing wall, the chamber is positioned below the feeding well and above the storage bin, the connection roadway is positioned at one side of the chamber, and the sealing wall is positioned between the chamber and the connection roadway; and a high-pressure air supply main pipe is arranged on the closed wall, one end of the high-pressure air supply main pipe extends into the chamber, and the other end of the high-pressure air supply main pipe extends into the connecting roadway and is connected with the high-pressure fan. According to the invention, the high-pressure air supply pipe connected with the high-pressure fan is arranged, so that high-pressure air is supplied to the chamber during feeding, a stable high-pressure environment in the chamber is maintained, an air cushion effect is formed, the falling resistance of solid materials is increased, the falling speed of the solid materials is slowed down, and the impact force on the storage bin is reduced; simple structure, safety and reliability.
Description
Technical Field
The invention relates to the technical field of mining engineering, in particular to a device and a method for controlling the falling speed of a solid material in a large vertical depth feeding well.
Background
During mine filling mining, a vertical feeding well is usually adopted to feed solid materials such as waste rocks into an underground storage bin from the ground, when the vertical feeding well is deep, the solid materials fed continuously generate a fast falling speed, a storage bin at the lower part of the feeding well generates huge impact force, and the huge impact force causes premature wear of a well wall structure and deformation and damage of bottom hole facilities.
Among the prior art, generally adopt and set up a plurality of blotters in throwing the pipeline of material well, cushion throwing the material that the material well fell down, but the blotter takes place to damage easily, reliability and life-span are low.
Disclosure of Invention
In order to solve the technical problem, the invention provides a solid material falling speed control device in a large vertical depth feeding well, which comprises a feeding well, a storage bin, a chamber, a connection roadway and a sealing wall, wherein the chamber is positioned below the feeding well and above the storage bin, the connection roadway is positioned on one side of the chamber, and the sealing wall is positioned between the chamber and the connection roadway;
the high-pressure air supply main pipe is arranged on the closed wall, one end of the high-pressure air supply main pipe extends into the chamber, the other end of the high-pressure air supply main pipe extends into the connection roadway and is connected with the high-pressure fan, and the high-pressure air supply main pipe is used for providing high-pressure air to the chamber and reducing the falling speed of solid materials.
According to the invention, the high-pressure air supply pipe connected with the high-pressure fan is arranged, so that high-pressure air is supplied to the chamber during feeding, a stable high-pressure environment in the chamber is maintained, an air cushion effect is formed, the falling resistance of solid materials is increased, the falling speed of the solid materials is slowed down, and the impact force on the storage bin is reduced; simple structure, safety and reliability.
Further, a first valve is arranged on the high-pressure air supply main pipe in the connecting roadway.
Furthermore, a ventilation branch pipe is arranged in the communication roadway, one end of the ventilation branch pipe is connected with the high-pressure air supply main pipe between the valve I and the closed wall, and a valve II is arranged on the ventilation branch pipe.
According to the invention, the ventilation branch pipe connected with the high-pressure air supply main pipe is arranged, so that air supply to the connection roadway is realized by opening the second valve during feeding, no new ventilation roadway is required to be connected with the connection roadway, the structure is simple, and the cost is low; on the other hand, the opening of the second valve is adjusted to ensure that high-pressure air mainly enters the chamber, so that the air pressure in the chamber is maintained in a higher pressure state, the falling resistance of the solid materials in the feeding well is increased, and the high-pressure air in the feeding chamber forms a continuous air cushion effect, thereby achieving the effect of reducing the falling speed of the solid materials.
Further, a pressure sensor is arranged on the high-pressure air supply main pipe in the connecting roadway.
According to the invention, the pressure sensor is arranged on the high-pressure air supply pipe, so that the air pressure in the chamber can be conveniently detected, when the air pressure is lower than a preset air pressure value, the first valve can be conveniently opened in time, high-pressure air is supplied to the chamber through the high-pressure air supply main pipe, the air pressure in the chamber is maintained in a higher pressure state, the falling resistance of the solid materials in the feeding well is increased, and the high-pressure air in the feeding chamber forms a continuous 'air cushion' effect, so that the effect of reducing the falling speed of the solid materials is achieved.
Further, the high-pressure fan, the first valve, the second valve and the pressure sensor are all electrically connected with the control system.
According to the invention, the control system electrically connected with the high-pressure fan, the first valve, the second valve and the pressure sensor is arranged, so that automatic control is realized, the labor intensity of workers is reduced, and the labor cost is saved.
Further, a pressure gauge is arranged on the high-pressure air supply main pipe in the connecting roadway.
According to the invention, the pressure gauge is arranged on the high-pressure air supply main pipe, so that the air pressure in the chamber can be known conveniently, when the displayed air pressure is lower than the preset air pressure value, the first valve can be opened conveniently in time, high-pressure air is supplied to the chamber through the high-pressure air supply main pipe, the air pressure in the chamber is maintained in a higher pressure state, the falling resistance of the solid materials in the feeding well is increased, and the high-pressure air in the feeding chamber forms a continuous 'air cushion' effect, so that the effect of reducing the falling speed of the solid materials is achieved.
Furthermore, a ventilation pipe is arranged on the closed wall, and a valve III is arranged on the ventilation pipe.
According to the invention, the ventilation pipe is arranged, when the feeding is finished, the connection roadway is communicated with the external atmospheric pressure through the ventilation pipe, the air supply for the connection roadway is realized, the air supply through the ventilation branch pipe connected with the high-pressure fan is not needed, the electric energy is saved, and the cost is saved.
Further, a sealing door is arranged on the sealing wall.
In the embodiment, the space of the feeding chamber is sealed by arranging the sealing door on the sealing wall, and the sealing door can be opened, so that an operator can conveniently overhaul or maintain equipment in the chamber or the storage bin during the non-feeding period.
The second aspect of the invention provides a method for controlling the falling speed of a solid material in a large vertical-depth feeding well, which is applied to the device for controlling the falling speed of the solid material in the vertical-depth feeding well, and the method comprises the following steps:
when feeding, closing a first valve on the high-pressure air supply main pipe, a second valve on the ventilation branch pipe and a third valve on the ventilation pipe;
detecting the air pressure of a high-pressure air supply main pipe, and when the air pressure value detected by a pressure sensor on the high-pressure air supply main pipe is lower than a preset air pressure value, opening a first valve, controlling a high-pressure fan connected with the high-pressure air supply main pipe to work, and providing high pressure for the underground chamber; opening a second valve on a ventilation branch pipe connected with the high-pressure air supply main pipe, supplying air to a connecting roadway, and simultaneously adjusting the opening degree of the second valve to ensure that high-pressure air mainly enters the chamber;
and after the feeding is finished, closing the first valve and the second valve, opening the third valve, and communicating the communication roadway with the external atmospheric pressure through the ventilation pipe, the chamber and the feeding well.
Drawings
FIG. 1 is a schematic view of the overall structure of a solid material falling speed control device in a large vertical depth feeding well provided by the invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged partial schematic view of the circled portion of FIG. 1;
description of reference numerals:
10-chamber; 100-a buffer device; 110-a buffer cover; 120-upper support plate; 130-an elastic member; 131-a guide bar; 132-a spring; 140-a lower support plate; 150-a support beam; 160-guide posts;
20-a feeding well;
30-a storage bin;
40-communication lane; 401-high pressure draught fan;
50-a closed wall; 501-a sealed door;
60-high pressure air supply main pipe; 601-valve one; 602-a pressure sensor; 603-pressure gauge;
70-a ventilation branch pipe; 701-valve two;
80-a vent pipe; 801-valve three;
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures 1 to 3 are described in detail below.
In the present invention, the terms "inside", "outside", "upper", "lower", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, the present embodiment provides a device for controlling a falling speed of a solid material in a large vertical depth charging well, which includes a charging well 20, a storage bin 30, a chamber 10, a connection lane 40 and a sealing wall 50, wherein the chamber 10 is located below the charging well 20 and above the storage bin 30, the connection lane 40 is located at one side of the chamber 10, and the sealing wall 50 is located between the chamber 10 and the connection lane 40;
the sealed wall 50 is provided with a high-pressure air supply main pipe 60, one end of the high-pressure air supply main pipe 60 extends into the chamber 10, the other end of the high-pressure air supply main pipe 60 extends into the connection roadway 40 and is connected with the high-pressure fan 401, and the high-pressure air supply main pipe 60 is used for supplying high-pressure air to the chamber 10 and reducing the falling speed of the solid materials.
Therefore, in the embodiment, the high-pressure air supply pipe connected to the high-pressure blower 401 is arranged to supply high-pressure air to the chamber 10 during the feeding period, so as to maintain a stable high-pressure environment in the chamber 10, form an air cushion effect, increase the falling resistance of the solid material, slow down the falling speed of the solid material, and reduce the impact force on the storage bin 30; simple structure, safety and reliability.
Preferably, referring to fig. 1, a first valve 601 is disposed on the high-pressure air supply main pipe 60 located in the connecting roadway 40.
Preferably, referring to fig. 1, a ventilation branch pipe 70 is arranged in the communication lane 40, one end of the ventilation branch pipe 70 is connected to the high-pressure main air supply pipe 60 between the first valve 601 and the sealing wall 50, and a second valve 701 is arranged on the ventilation branch pipe 70.
Therefore, in the embodiment, by arranging the ventilation branch pipe 70 connected with the high-pressure air supply main pipe 60, during the feeding period, on one hand, air supply to the connection roadway 40 is realized by opening the second valve 701, and no new ventilation roadway is required to be connected with the connection roadway 40, so that the structure is simple and the cost is low; on the other hand, the opening degree of the second valve 701 is adjusted to ensure that high-pressure air mainly enters the chamber 10, so that the air pressure in the chamber 10 is maintained in a higher pressure state, the falling resistance of the solid materials in the feeding well 20 is increased, and the high-pressure air in the feeding chamber 10 forms a continuous air cushion effect, thereby achieving the effect of reducing the falling speed of the solid materials.
Preferably, referring to fig. 1, a pressure sensor 602 is disposed on the high-pressure air supply main pipe 60 located in the communication roadway 40, and the pressure sensor 602 is used for detecting the air pressure of the chamber 10.
Therefore, in the embodiment, the pressure sensor 602 is arranged on the high-pressure air supply pipe, so that the air pressure in the chamber 10 can be detected conveniently, when the air pressure is lower than the preset air pressure value, the valve one 601 can be opened conveniently in time, high-pressure air is provided for the chamber 10 through the high-pressure air supply main pipe 60, the air pressure in the chamber 10 is maintained in a higher pressure state, the falling resistance of the solid materials in the feeding well 20 is increased, and the high-pressure air in the feeding chamber 10 forms a continuous 'air cushion' effect, so that the effect of reducing the falling speed of the solid materials is achieved.
Preferably, a control system (not shown in the figure) is further included, and the high pressure fan 401, the first valve 601, the second valve 701 and the pressure sensor 602 are all electrically connected with the control system.
During the feeding, the first valve 601 on the high-pressure air supply main pipe 60, the second valve 701 on the ventilation branch pipe 70 and the third valve 801 on the ventilation pipe 80 are closed; when the air pressure value detected by the pressure sensor 602 on the high-pressure air supply main pipe 60 is lower than the preset air pressure value, the control system controls to open the first valve 601, controls the high-pressure fan 401 connected with the high-pressure air supply main pipe 60 to operate, and provides high pressure for the chamber 10; the control system controls to open a second valve 701 on the ventilation branch pipe 70 connected with the high-pressure air supply main pipe 60, supplies air to the connecting roadway 40, and adjusts the opening degree of the second valve 701 to ensure that high-pressure air mainly enters the chamber 10, so that the air pressure in the chamber 10 is maintained in a higher pressure state;
when the feeding is finished, the control system controls the first valve 601 and the second valve 701 to be closed, and controls the third valve 801 to be opened, so that the communication roadway 40 is communicated with the external atmosphere through the ventilation pipe 80, the chamber 10 and the feeding well 20.
Therefore, this embodiment realizes automatic control through setting up the control system who is connected with high pressure positive blower 401, valve 601, valve two 701, pressure sensor 602 electricity, reduces artifical intensity of labour, practices thrift the cost of labor.
Preferably, referring to fig. 1, a pressure gauge (not shown) is disposed on the high pressure air supply main pipe 60 in the communication lane 40 for displaying the air pressure value.
Therefore, in the embodiment, the pressure gauge is arranged on the high-pressure air supply main pipe 60, so that the air pressure in the chamber 10 can be known conveniently, when the displayed air pressure is lower than the preset air pressure value, the valve I601 can be opened conveniently in time, high-pressure air is provided for the chamber 10 through the high-pressure air supply main pipe 60, the air pressure in the chamber 10 is maintained in a higher pressure state, the falling resistance of solid materials in the feeding well 20 is increased, and the high-pressure air in the feeding chamber 10 forms a continuous 'air cushion' effect, so that the effect of reducing the falling speed of the solid materials is achieved.
Preferably, referring to fig. 1, the sealing wall 50 is provided with a ventilation pipe 80, the ventilation pipe 80 is provided with a valve three 801, and the valve three 801 is configured as follows: after the feeding is finished, the third valve 801 is opened, so that the communication roadway 40 is communicated with the external atmosphere through the ventilation pipe 80, the chamber 10 and the feeding well 20.
Therefore, this embodiment is through setting up ventilation pipe 80, throw the material when finishing, and contact lane 40 communicates with external atmospheric pressure through ventilation pipe 80, realizes for contact lane 40 air feed, need not practice thrift the electric energy through the ventilation branch 70 air feed that links to each other with high pressure positive blower 401, saves the cost.
Preferably, the valve III 801 is electrically connected with the control system, so that automatic control of the valve III 801 is realized, the labor intensity of workers is reduced, and the labor cost is saved.
Preferably, referring to fig. 1 and 2, the containment wall 50 is provided with a containment door 501.
Note that the airtight door 501 is normally closed.
Therefore, in the embodiment, the space of the charging chamber 10 is sealed by arranging the sealing door 501 on the sealing wall 50, and the sealing door 501 can be opened, so that an operator can conveniently overhaul or maintain the chamber 10 or the storage bin 30 during the non-charging period.
Preferably, referring to fig. 1 and 3, a buffer device 100 is disposed in the chamber 10, the buffer device 100 includes a buffer cover 110, an upper support plate 120, an elastic member 130, a lower support plate 140 and a support beam 150, the buffer cover 110 is connected to the upper support plate 120, the upper support plate 120 is connected to one end of the elastic member 130, the other end of the elastic member 130 is connected to the lower support plate 140, the lower support plate 140 is connected to the support beam 150, and the support beam 150 is fixed to the inner wall of the storage bin 30.
Therefore, in the present embodiment, the buffering device 100 is disposed in the chamber 10, so that the falling solid material is buffered at high pressure and then further contacts with the buffering device 100, and then absorbs part of the kinetic energy through the elastic member 130, thereby effectively reducing the impact of the solid material on the downhole storage bin 30.
Preferably, referring to fig. 3, the elastic member 130 is a spring 132 having a guide rod 131, the spring 132 is sleeved on the guide rod 131, the lower end of the guide rod 131 is connected to the support beam 150, the upper support plate 120 is provided with a mounting hole, the upper support plate 120 is sleeved on the guide rod 131 through the mounting hole, and the spring 132 is connected to the upper support plate 120 and the lower support plate 140, respectively.
Preferably, referring to fig. 3, the buffering device 100 further includes a guide post 160, one end of the guide post 160 is connected to the upper support plate 120, and the other end of the guide post 160 passes through a guide hole of the lower support plate 140 and extends below the lower support plate 140.
Preferably, referring to fig. 3, the support beam 150 is an i-beam.
The second aspect of the present invention provides a method for controlling the falling speed of a solid material in a large vertical-depth charging well, which is applied to the above-mentioned device for controlling the falling speed of a solid material in a vertical-depth charging well 20, and the method comprises:
when feeding, closing a first valve 601 on the high-pressure air supply main pipe 60, a second valve 701 on the ventilation branch pipe 70 and a third valve 801 on the ventilation pipe 80;
detecting the air pressure of the high-pressure air supply main pipe 60, opening a first valve 601 when the air pressure value detected by a pressure sensor 602 on the high-pressure air supply main pipe 60 is lower than a preset air pressure value, controlling a high-pressure fan 401 connected with the high-pressure air supply main pipe 60 to work, and providing high pressure for the underground chamber 10; opening a second valve 701 on the ventilation branch pipe 70 connected with the high-pressure air supply main pipe 60, supplying air to the connecting roadway 40, and simultaneously adjusting the opening degree of the second valve 701 to ensure that high-pressure air mainly enters the chamber 10;
after the feeding is finished, the first valve 601 and the second valve 701 are closed, the third valve 801 is opened, and the communication roadway 40 is communicated with the external atmosphere through the ventilation pipe 80, the chamber 10 and the feeding well 20.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The solid material falling speed control device in the large vertical depth feeding well is characterized by comprising a feeding well (20), a storage bin (30), a chamber (10), a connection roadway (40) and a sealing wall (50), wherein the chamber (10) is positioned below the feeding well (20) and above the storage bin (30), the connection roadway (40) is positioned on one side of the chamber (10), and the sealing wall (50) is positioned between the chamber (10) and the connection roadway (40);
be provided with high-pressure air supply on the sealed wall (50) and be responsible for (60), the one end that high-pressure air supply was responsible for (60) stretches into chamber (10), and the other end stretches into contact lane (40) and link to each other with high-pressure positive blower (401), high-pressure air supply is responsible for (60) and is used for to chamber (10) provides high-pressure wind, slows down the falling speed of solid material.
2. The solid material falling speed control device in the large vertical depth feeding well according to the claim 1, characterized in that the high pressure air supply main pipe (60) in the connecting roadway (40) is provided with a valve one (601).
3. The solid material falling speed control device in the large vertical depth charging well according to claim 2, characterized in that a ventilation branch pipe (70) is arranged in the communication roadway (40), one end of the ventilation branch pipe (70) is connected with the high-pressure air supply main pipe (60) between the valve I (601) and the sealing wall (50), and a valve II (701) is arranged on the ventilation branch pipe (70).
4. The solid material falling speed control device in the large vertical depth charging well according to any one of claims 2 to 3, characterized in that a pressure sensor (602) is arranged on the high-pressure air supply main pipe (60) in the connecting roadway (40).
5. The solid material falling speed control device in the large vertical depth feeding well according to claim 4, characterized by further comprising a control system, wherein the high pressure fan (401), the first valve (601), the second valve (701) and the pressure sensor (602) are all electrically connected with the control system.
6. The solid material falling speed control device in the large vertical depth charging well according to any one of claims 1 to 3, characterized in that a pressure gauge is arranged on the high-pressure air supply main pipe (60) in the connecting roadway (40).
7. The solid material falling speed control device in the large vertical depth batch charging well according to any one of claims 1 to 3, characterized in that the sealing wall (50) is provided with a vent pipe (80), and the vent pipe (80) is provided with a valve III (801).
8. The solid material falling speed control device in the large vertical depth batch charging well according to any one of claims 1 to 3, characterized in that the sealing wall (50) is provided with a sealing door (501).
9. A method for controlling the falling speed of solid materials in a large vertical depth charging well, which is applied to the device for controlling the falling speed of the solid materials in the large vertical depth charging well as defined in any one of claims 1-8, and is characterized by comprising the following steps:
when feeding, controlling a first valve (601) on the high-pressure air supply main pipe (60), a second valve (701) on the ventilation branch pipe (70) connected with the high-pressure air supply main pipe (60) and a third valve (801) on the ventilation pipe (80) to be closed;
detecting an air pressure value in the underground chamber (10), and when the air pressure value is lower than a preset air pressure value, controlling a first valve (601) and a second valve (701) to be opened, and controlling a high-pressure fan (401) connected with the high-pressure air supply main pipe (60) to operate;
and when the feeding is finished, controlling the first valve (601) and the second valve (701) to be closed, and controlling the third valve (801) to be opened.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110292597.1A CN112901256B (en) | 2021-03-18 | 2021-03-18 | Device and method for controlling falling speed of solid material in large vertical depth feeding well |
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| CN202110292597.1A CN112901256B (en) | 2021-03-18 | 2021-03-18 | Device and method for controlling falling speed of solid material in large vertical depth feeding well |
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| CN112901256A true CN112901256A (en) | 2021-06-04 |
| CN112901256B CN112901256B (en) | 2022-11-15 |
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| CN102889097A (en) * | 2012-09-20 | 2013-01-23 | 河北煤炭科学研究院 | System for feeding coal mine solid filling material |
| US20160311625A1 (en) * | 2014-06-25 | 2016-10-27 | China University Of Mining And Technology | Solid filling coal mining feeding and conveying monitoring system |
| CN206395474U (en) * | 2016-08-30 | 2017-08-11 | 湖南三德科技股份有限公司 | A kind of buffer unit for material pneumatic conveyer system |
| CN214836520U (en) * | 2021-03-18 | 2021-11-23 | 华能煤炭技术研究有限公司 | Solid material falling speed control device in large vertical depth feeding well |
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2021
- 2021-03-18 CN CN202110292597.1A patent/CN112901256B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB876148A (en) * | 1956-12-14 | 1961-08-30 | Gewerk Reuss | A chute for mine waste or other materials |
| GB878565A (en) * | 1957-04-08 | 1961-10-04 | Gewerk Reuss | Improvements in gravity-feed rubbish pipes |
| GB999635A (en) * | 1962-05-10 | 1965-07-28 | Stamicarbon | Process and installation for transporting solid material with the aid of compressed air |
| GB2111930A (en) * | 1981-12-22 | 1983-07-13 | British Steam Spec | Particulate solid material supply system and method |
| CN201412180Y (en) * | 2009-06-02 | 2010-02-24 | 中国矿业大学 | Large vertical depth solid charging system with filling technology in coal mining |
| CN101845965A (en) * | 2010-05-11 | 2010-09-29 | 中国矿业大学 | Pressure discharge method for anti-blocking chamber of feeding well |
| CN102889097A (en) * | 2012-09-20 | 2013-01-23 | 河北煤炭科学研究院 | System for feeding coal mine solid filling material |
| US20160311625A1 (en) * | 2014-06-25 | 2016-10-27 | China University Of Mining And Technology | Solid filling coal mining feeding and conveying monitoring system |
| CN206395474U (en) * | 2016-08-30 | 2017-08-11 | 湖南三德科技股份有限公司 | A kind of buffer unit for material pneumatic conveyer system |
| CN214836520U (en) * | 2021-03-18 | 2021-11-23 | 华能煤炭技术研究有限公司 | Solid material falling speed control device in large vertical depth feeding well |
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| CN112901256B (en) | 2022-11-15 |
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