CN108050275B - Anti-blocking type hydraulic support spraying dust fall control valve - Google Patents
Anti-blocking type hydraulic support spraying dust fall control valve Download PDFInfo
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- CN108050275B CN108050275B CN201711335387.6A CN201711335387A CN108050275B CN 108050275 B CN108050275 B CN 108050275B CN 201711335387 A CN201711335387 A CN 201711335387A CN 108050275 B CN108050275 B CN 108050275B
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- 239000000428 dust Substances 0.000 title claims abstract description 57
- 238000005507 spraying Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 127
- 239000002245 particle Substances 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000000354 decomposition reaction Methods 0.000 claims description 35
- 239000007921 spray Substances 0.000 claims description 24
- 230000009471 action Effects 0.000 claims description 17
- 239000011148 porous material Substances 0.000 claims description 15
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000000306 component Substances 0.000 claims description 5
- 239000008358 core component Substances 0.000 claims description 4
- 230000004044 response Effects 0.000 abstract description 4
- 239000000839 emulsion Substances 0.000 description 13
- 239000003245 coal Substances 0.000 description 11
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 239000012535 impurity Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 208000035874 Excoriation Diseases 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 206010035653 pneumoconiosis Diseases 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
- F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- 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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nozzles (AREA)
Abstract
The invention discloses an anti-blocking hydraulic support spraying dust fall control valve, which comprises a valve body, wherein a water inlet, a water outlet, a control liquid inlet and a valve cavity are arranged on the valve body, the water inlet and the water outlet are communicated through the valve cavity, a valve core assembly is arranged in the valve cavity, and the valve core assembly is of a non-rigid combined structure; an anti-blocking filter device comprising a dust particle decomposing knife is arranged between the water inlet and the valve cavity. The valve cavity and the water outlet are both provided with two, the two valve cavities are communicated through a communication hole, the valve core assembly is provided with two paths of control liquid driving structures formed by two control liquid inlets, and the two water outlets can be communicated with the water inlet through the valve cavity and the horn mouth respectively; or the two water outlets are simultaneously communicated with the water inlet through the valve cavity and the bell mouth, and the valve core assembly seals the bell mouth through the self-resetting valve core head. The valve has the advantages that the valve core is short in stroke, the valve opening is quick in opening and closing response, and the service life of the sealing element is long; the valve core has no hidden danger of blockage, compact structure, strong pressure resistance and long service life.
Description
Technical Field
The invention relates to a hydraulic control valve, in particular to an anti-blocking hydraulic control valve for spraying and dust falling of a hydraulic support under a coal mine.
Background
The harm of dust is highly valued in the current country, and in order to ensure the life safety of first-line workers and furthest reduce the occurrence of pneumoconiosis, the old project or the newly-built project has strict requirements on environmental protection acceptance, and dust prevention measures are needed at dust production points; the link with the most dust production of the coal face comprises falling post and frame moving and dust falling, top coal caving and dust impacting, grinding dust during coal cutting of a coal machine, side wall impact dust and the like, wherein the dust prevention measures are to spray clean water and reduce the dust, and the spraying and dust reduction are mainly realized by controlling the opening or closing of a spraying valve through a hydraulic control valve by a hydraulic system of a hydraulic support. In order to prevent the valve from being blocked, a filtering device is usually required to be arranged at the front end of the clean water access valve so as to effectively prevent solid impurities in the water from entering the valve, thereby eliminating the hidden danger of blocking. But this approach results in a complex spray system structure. In addition, the existing control valve has the defects of short service life or few spray outlets. For example, in chinese patent publication No. CN205990928U, publication date 2017, 3, 1, and an automatic spray control valve is disclosed, in which an O-ring in a valve core assembly seals two valve cavity holes when a valve moving in a valve opening and closing state, the two valve cavity holes are correspondingly formed on two members, the valve cavity holes are butted through a bell mouth, in a moving process of the valve core, the O-ring needs to move from a cylindrical matching section at one end, passes through a butted section of the bell mouth and then enters a cylindrical section at the other end, so that the O-ring has a working state of repeated expansion and contraction, which is easy to cause early aging and abrasion of the O-ring, and shortens the service life. Chinese patent publication No. CN104747223a, publication date 2015, 7, 1 and 1, discloses an automatic spray control device for hydraulic support, which is provided with two valve core components, but only has one spray outlet, when the spray outlet needs to be added, the whole control device can only be added, resulting in structural bulkiness and resource waste. For this reason, further improvements to existing spray dust control valves are needed.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides an anti-blocking hydraulic support spraying dust fall control valve, which is characterized in that an anti-blocking filter device with a dust particle decomposing knife is arranged on a valve body to reduce the dust particle size, so that a valve core can be effectively prevented from being blocked; the integrated design simplification and the compact structure of the double-hole water supply mode are further realized through the parallel double-valve core structure, and the cost is reduced; the valve core moving distance is shortened through the short-stroke shut-off structure, the valve core is composed of a driving assembly and an executing assembly which are not rigidly connected, a butt joint interface or tangential perforation of the wall of the valve cavity in a moving area of the sealing element is avoided, and the service life of the sealing element is prolonged.
In order to achieve the above purpose, the present invention adopts the following technical scheme.
An anti-blocking hydraulic support spray dust fall control valve comprises a valve body, wherein a water inlet, a water outlet, a control liquid inlet and a valve cavity are formed in the valve body, the water inlet and the water outlet are communicated through the valve cavity, a valve core assembly is arranged in the valve cavity, and the valve core assembly moves under the action of control liquid to form connection and disconnection of the water inlet and the water outlet; an anti-blocking filter device comprising a dust particle decomposing knife is arranged between the water inlet and the valve cavity.
According to the invention, the water outlet and the water inlet are communicated and blocked by controlling the pressure liquid entering through the control liquid inlet, so that the spray dust fall control valve of the hydraulic support is formed and is used for forming dust fall measures of a hydraulic support area in a coal mining working face. Moreover, prevent stifled filter equipment includes the dust and decompose the sword, can be at the kinetic energy action line of intaking, makes dust and sword take place to strike, thereby effectively reduce the dust particle diameter of intaking the end, reduce the system and to aquatic impurity particle diameter requirement, widen application scope.
Preferably, the anti-blocking filter device comprises a decomposition tool apron, the decomposition tool apron is fixedly connected in an anti-blocking filter device mounting hole formed in the valve body in a sealing manner, a pore plate is arranged at the bottom of the anti-blocking filter device mounting hole and is fixedly abutted by the decomposition tool apron, a particle decomposition cavity is formed in the middle of the inner end of the decomposition tool apron, the particle decomposition cavity is communicated with the water inlet, and the decomposition tool apron is fixedly connected with the dust particle decomposition tool through the bottom of the particle decomposition cavity; and the pore plate is provided with a water passing hole, and two ends of the water passing hole are respectively communicated with the particle decomposition cavity and the valve cavity. So as to form a simple and compact anti-blocking filter structure, and is convenient to integrate on the valve body. Wherein, the decomposing knife can be arranged in a plurality according to the size of the containing cavity and the knife body; preferably, the split blades are arranged in a circumferentially distributed plurality of helical or straight blade configurations, similar to a machined cylindrical or rod mill.
Further preferably, the outer wall of the decomposing tool apron is provided with an annular groove, the annular groove is communicated with the water inlet, the bottom of the annular groove is provided with a water inlet communicated with the particle decomposing cavity, and the water inlet is close to the inner wall of the particle decomposing cavity. So as to form a spiral water inlet structure in the containing cavity, thereby not only increasing the impact energy of water inlet, but also being convenient for flushing the water inlet of the pore plate and reducing the hidden trouble of blocking the pore plate.
Preferably, the valve cavity and the water outlet are both provided with two, the two valve cavities are communicated through a communication hole to form a parallel structure, the valve core assembly arranged in the valve cavity is provided with two paths of control liquid driving structures formed by two control liquid inlets, so that two water outlets are formed and can be respectively communicated with the water inlet through the valve cavity and the horn mouth; or the two water outlets are simultaneously communicated with the water inlet through the valve cavity and the bell mouth, a valve core head is arranged in the valve core assembly, and the valve core head is used for forming the blocking of the bell mouth. So as to be suitable for spraying water from any one water outlet or spraying water from two water outlets at the same time. Compared with the existing control valve with only one water outlet, the control valve has the advantages of simplifying the structure and reducing the cost. Moreover, the water outlet and the water inlet are turned off and on only through blocking and opening of the bell mouth, and the O-shaped sealing ring does not need to move back and forth on the matched section with the butt-joint bell mouth, so that early abrasion and aging phenomena of the sealing ring are eliminated.
Further preferably, the valve cavity comprises a valve cavity upper section and a valve cavity lower section; the valve core assembly comprises a driving assembly and an executing assembly comprising a valve core head, the driving assembly is used for driving the executing assembly to move, and the executing assembly is used for opening or sealing the bell mouth; the upper section of the valve cavity is used for setting the driving component and is communicated with the two control liquid inlets; the lower section of the valve cavity is used for setting the execution assembly and is communicated with the water inlet and the water outlet; the upper valve cavity section and the lower valve cavity section are separated into two independent spaces through a valve cavity baffle; the driving assembly and the executing assembly are connected through a connecting rod, the middle rod part of the connecting rod passes through the valve cavity baffle, and the valve cavity baffle and the matching hole arranged on the valve cavity baffle form sliding fit, and the two ends of the valve cavity baffle are provided with sealing through covers which pass through the connecting rod and form plugging for the matching hole. So as to effectively avoid the phenomenon of channeling of the spray clear water and the control liquid, eliminate the risk of diluting the control liquid by adopting emulsion or mixing water by adopting the control liquid of hydraulic oil, and prolong the service lives of the hydraulic system and the spray dust settling system. The horn mouth is adopted to control water supply, the execution assembly for plugging the horn mouth can be completely opened after being moved by about 2mm, and the opening and closing response is quick and quick.
Still further preferably, the executing assembly comprises a valve core head fixing seat, the valve core head fixing seat is movably arranged in the lower section of the valve cavity, a self-resetting elastic element is arranged between the valve core head fixing seat and the valve cavity baffle, the valve core head fixing seat is connected with the connecting rod through a synchronous moving connecting structure, and the moving connecting structure is used for pulling the valve core head fixing seat to synchronously move upwards after the connecting rod moves upwards for a set distance; the valve core head is fixed at the lower end of the valve core head fixing seat in a threaded manner. The valve is automatically closed only through the elastic element, the pressure is not required to be maintained when the valve is controlled to be closed, the valve can be closed only by one execution action, the closing reliability is ensured, the response speed is high, and the closing energy consumption of the valve can be effectively reduced. The driving component and the executing component form a non-rigid connection relationship, so that the situation that a butt joint interface exists in the moving range of the valve core or a valve cavity wall section with a notch exists can be effectively avoided, the service life of the sealing element is prolonged, and the service life of the control valve is indirectly prolonged. The set distance of the upward movement of the connecting rod is 2.0-3.0 mm, so that the automatic resetting stroke requirement of the elastic element can be met, and the movement distance of the corresponding driving assembly is only 4.0-5.0 mm; the self-resetting elastic element can be a cylindrical or conical compression spring, a belleville spring, an elastic gasket made of an elastomer material and having elastic compression amount, or any structural elastic element capable of automatically sealing the bell mouth by utilizing the elastic force of the elastic element.
Still further preferably, the lower section of the valve cavity is in a cylindrical hole structure; the valve core head fixing seat is in sliding fit with a cylindrical hole in the lower section of the valve cavity; the valve core head is of a stepped shaft structure, the valve core head is used for plugging a cylindrical working part of the bell mouth, and the diameter of the cylindrical working part is smaller than that of a cylindrical hole at the lower section of the valve cavity. The cylindrical valve core head and the bell mouth form reliable sealing connection, and even if abrasion occurs, the water outlet can be reliably shut off through automatic compensation of the self-resetting elastic element. In addition, the valve core head is smaller than the diameter of the cylindrical hole at the lower section of the valve cavity, so that an annular cavity is formed between the valve core head and the inner wall of the lower section of the valve cavity, and water can be reliably supplied to the other valve cavity.
Still further preferably, the communication hole is connected to the lower sections of the two valve chambers. The two valve cavities are ensured to store water through the annular cavity at the lower section of the uniform valve cavity, and a parallel state is formed.
Still further preferably, the synchronous moving connecting structure comprises a terminal arranged at the lower end of the connecting rod and a terminal accommodating space arranged at the upper part of the valve core head fixing seat; the valve core head fixing seat is characterized in that the bottom of a threaded hole for screwing the valve core head is of a blind hole structure, a through hole penetrating through the connecting rod is formed in the bottom of the blind hole, the blind hole forms an end head accommodating space, and when the valve core head is in a sealing state of the bell mouth, the end head accommodating space is further provided with a space for allowing the end head to axially move for a set distance. So as to realize a mobile connection structure through a simple and compact structure; after the water outlet is closed and loaded and the connecting rod moves upwards for a set distance, the valve core head fixing seat is driven to move upwards so as to open the water outlet to provide clean water for spraying and dust fall.
Still further preferably, the driving assembly comprises a piston, the piston is fixedly connected to the upper end of the connecting rod, the piston is in sliding fit in a cylinder sleeve, the cylinder sleeve is arranged in the upper section of the valve cavity, a limiting seat is arranged at the outer end of the cylinder sleeve, and the limiting seat forms a cylinder bottom at one end of a cylinder body of the piston cylinder provided with the piston; one of the two control liquid inlets is arranged on the limiting seat and is positioned above the piston; the other is arranged through the valve body and the upper section of the valve cavity and is positioned below the piston; the valve cavity baffle is arranged at the bottom of the upper section of the valve cavity and is in liquid sealing connection with the inner wall of the upper section of the valve cavity through a baffle sealing ring, and the valve cavity baffle forms the bottom of the other end of the piston cylinder body provided with the piston. The piston is only matched with the cylinder sleeve, the working state of the piston is the same as that of a traditional hydraulic cylinder, the reliable moving and driving of the driving assembly can be effectively ensured, and the hydraulic cylinder has the advantages of simple structure, compact layout and long service life. And the piston and the cylinder sleeve can be replaced after being worn so as to prolong the service life of the valve body. The valve cavity baffle can be of a structure fixed at the bottom of the upper section of the valve cavity and also can be movably arranged at the bottom of the upper section of the valve cavity so as to form the valve cavity baffle of the piston structure.
The service life of the control valve is longer than 10 ten thousand times through the test pressure of 10 MPa; the service life of the bracket spray control valve in the prior art is about 3000 times when the water pressure is less than 5MPa, and the service life of part of products can not reach 1000 times even when the water pressure is more than 5 MPa. Therefore, compared with the prior art, the product has the advantages of strong pressure resistance, long service life and obvious technical advantages.
The valve has the advantages that the valve core is short in stroke, the valve opening is quick in opening and closing response, and the service life of the sealing element is long; the valve core has no hidden danger of blockage, compact structure, strong pressure resistance and long service life.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings, which are not intended to limit the invention to the embodiments described.
Referring to fig. 1, an anti-blocking hydraulic support spray dust control valve comprises a valve body 1, wherein a water inlet 2, a water outlet, a control liquid inlet and a valve cavity are arranged on the valve body 1, the water inlet 2 and the water outlet are communicated through the valve cavity, a valve core component is arranged in the valve cavity and moves under the action of the control liquid so as to form connection and disconnection of the water inlet 2 and the water outlet; an anti-blocking filter device comprising a dust particle decomposing knife 3 is arranged between the water inlet 2 and the valve cavity.
The anti-blocking filter device comprises a decomposition tool apron 4, the decomposition tool apron 4 is fixedly connected in an anti-blocking filter device mounting hole formed in the valve body 1 in a sealing manner, a pore plate 5 is arranged at the bottom of the anti-blocking filter device mounting hole, the pore plate 5 is fixedly abutted by the decomposition tool apron 4, a particle decomposition cavity is formed in the middle of the inner end of the decomposition tool apron 4, the particle decomposition cavity is communicated with the water inlet 2, the decomposition tool apron 4 is fixedly connected with a plurality of dust particle decomposition tools 3 through the bottom of the particle decomposition cavity, and the dust particle decomposition tools 3 are provided with a plurality of spiral blades or straight blades distributed circumferentially; the orifice plate 5 is provided with a water passing hole, the water passing Kong Jinshui end is communicated with the granule decomposing cavity through a 100-mesh filter screen, and the water outlet end of the water passing hole is communicated with the valve cavity. The outer wall of the decomposing tool apron 4 is provided with an annular groove 4a, the annular groove 4a is communicated with the water inlet 2, the bottom of the annular groove 4a is provided with a particle decomposing cavity communicated with the particle decomposing cavity through a water inlet, and the water inlet is close to the inner wall of the particle decomposing cavity.
The two valve cavities and the two water outlets are respectively arranged, and comprise a first valve cavity 16, a second valve cavity 17, a first water outlet 18 and a second water outlet 19; the first valve cavity 16 and the second valve cavity 17 are communicated through a communication hole 6, the valve core assembly arranged in the valve cavity is provided with a two-way control liquid driving structure formed by a first control liquid inlet 20 and a second control liquid inlet 21, so that when the first horn mouth 22 is closed, the second water outlet 19 can be communicated with the water inlet 2 through the first valve cavity 16, the communication hole 6, the second valve cavity 17 and the second horn mouth 23; when the second bellmouth 23 is closed, the first water outlet 18 can be communicated with the water inlet 2 through the first valve cavity 16 and the first bellmouth 22; the valve core assembly is internally provided with a valve core head 7, and the valve core head 7 is used for forming a plugging of a corresponding bell mouth. So as to be suitable for spraying water from any one water outlet or spraying water from two water outlets at the same time.
The valve cavity comprises a valve cavity upper section and a valve cavity lower section; the valve core assembly comprises a driving assembly and an executing assembly comprising a valve core head 7, the driving assembly is used for driving the executing assembly to move, and the executing assembly is used for opening or sealing the bell mouth; the upper section of the valve cavity is used for setting the driving component and is communicated with the two control liquid inlets; the lower section of the valve cavity is used for setting the execution assembly and is communicated with the water inlet 2 and the water outlet; the upper valve cavity section and the lower valve cavity section are separated into two independent spaces through a valve cavity baffle 8; the driving assembly is connected through a connecting rod 9, the middle section rod part of the connecting rod 9 passes through the valve cavity baffle 8 and forms sliding fit with the valve cavity baffle 8 through a matching hole formed in the valve cavity baffle 8, two ends of the valve cavity baffle 8 are provided with sealing through covers 10 which pass through the connecting rod 9 and are used for blocking the matching hole, the sealing through covers 10 are screwed and fixed on the valve cavity baffle 8, the inner end face of the sealing through covers is in static sealing connection with the outer end face of the valve cavity baffle 8, a sealing element or a sealing element structure is formed on the hole wall of a hole penetrating through the connecting rod 9, and the hole wall is in dynamic sealing connection with the rod part of the connecting rod 9.
The execution assembly comprises a valve core head fixing seat 11, the valve core head fixing seat 11 is movably arranged in the lower section of the valve cavity, a self-resetting elastic element 12 formed by a compression spring is arranged between the valve core head fixing seat 11 and the valve cavity baffle 8, the valve core head fixing seat 11 is connected with the connecting rod 9 through a synchronous moving connecting structure, and the moving connecting structure is used for pulling the valve core head fixing seat 11 to synchronously move upwards by the connecting rod 9 after the connecting rod 9 moves upwards by a distance of 2.0-3.0 mm; the valve core head 7 is fixedly screwed at the lower end of the valve core head fixing seat 11. The lower section of the valve cavity is in a cylindrical hole structure; the valve core head fixing seat 11 is in sliding fit with a cylindrical hole in the lower section of the valve cavity; the valve core head 7 is of a stepped shaft structure, a working part for plugging the bell mouth is cylindrical, and the diameter of the cylinder of the working part is smaller than that of a cylinder hole at the lower section of the valve cavity. The communication hole 6 is connected to the lower sections of the two valve chambers. The synchronous moving connecting structure comprises a terminal arranged at the lower end of the connecting rod 9 and a terminal accommodating space arranged at the upper part of the valve core head fixing seat 11; the bottom of the threaded hole on the valve core head fixing seat 11 for screwing the valve core head 7 is in a blind hole structure, a through hole penetrating through the connecting rod 9 is formed at the bottom of the blind hole, the blind hole forms the end head accommodating space, and when the valve core head 7 is in a state of plugging the bell mouth, the end head accommodating space is also provided with a space allowing the end head to axially move by a distance of 2.0-3.0 mm.
The driving assembly comprises a piston 13, the piston 13 is fixedly connected to the upper end of a connecting rod 9, the piston 13 is in sliding fit with a cylinder sleeve 14, the cylinder sleeve 14 is arranged in the upper section of the valve cavity, the cylinder sleeve 14 is propped against the edge of an orifice of the upper section of the valve cavity through a flange plate arranged at the outer end of the cylinder sleeve 14, a limiting seat 15 is arranged at the outer end of the cylinder sleeve 14, the limiting seat 15 is screwed and fixed on the valve body 1, the limiting seat 15 forms a cylinder bottom at one end of a cylinder body of the piston cylinder provided with the piston 13, and the limiting seat 15 is used for limiting the stroke of the piston 13 to be between 4.0mm and 5.0 mm; the first control liquid inlet 20 of the first control liquid inlet 20 and the second control liquid inlet 21 is arranged on the limiting seat 15 and is positioned above the piston 13; a second control fluid inlet 21 is arranged through the valve body 1 and the upper section of the valve cavity and is positioned below the piston 13; the valve cavity baffle 8 is arranged at the bottom of the upper section of the valve cavity and is in liquid sealing connection with the inner wall of the upper section of the valve cavity through a baffle sealing ring 24, and the valve cavity baffle 8 forms the bottom of the other end of the piston cylinder body provided with the piston 13.
In this embodiment, the valve cavity baffle 8 may be fixed at the bottom of the upper section of the valve cavity, or may be movably disposed at the bottom of the upper section of the valve cavity to form the valve cavity baffle 8 with a piston structure. When the movable arrangement is adopted, the penetration position between the second control fluid inlet 21 and the inner part of the upper section of the valve cavity is required to be positioned outside the moving area of the baffle sealing ring 24 when the valve cavity baffle 8 moves.
In this embodiment, the self-restoring elastic member 12 may also employ a cylindrical or conical compression spring, a belleville spring, or an elastic washer made of an elastomer material having an elastic compression amount, or the like, instead of the cylindrical compression spring.
In this embodiment, when both the first bell mouth 22 and the second bell mouth 23 are opened, the two water outlets are simultaneously communicated with the water inlet 2 through the valve cavity and the bell mouth, so as to meet the requirements of spraying dust fall at two places at the same time, or other water supply.
When the hydraulic support system of the coal face is practically applied, the working process is as follows:
when the support plugboard is retracted to realize top coal caving, a second control liquid inlet 21 positioned on the right side in fig. 1 is communicated with a high-pressure emulsion liquid pipeline, emulsion liquid enters the lower part of a piston 13 in the lower cavity of a cylinder body of a right-side piston cylinder, the piston 13 moves upwards under the action of emulsion liquid pressure, and when a movable structure is adopted by the valve cavity baffle 8, the valve cavity baffle 8 moves downwards to a designed position; after the piston 13 moves upwards by 2.5mm synchronously with the connecting rod 9 fixedly connected through threads, the upper end surface of the connecting rod 9 is in close contact with the valve core head fixing seat 11, the piston 13 continuously moving upwards drives the valve core head fixing seat 11 and the valve core head 7 screwed with the valve core head fixing seat 11 through the connecting rod 9, the elastic force of the self-reset elastic element 12 formed by a compression spring is overcome to move upwards by 2mm to reach the end of the current stroke, the moving valve core head 7 is opened to form a first horn 22 and a first water outlet 18 which are originally sealed, when the first horn 2 is opened, the first water outlet 18 is communicated with the lower section of the valve cavity of the first valve cavity 16, so that the communication between the first water outlet 18 and the water inlet 2 is realized, static pressure water containing impurities in the pit sequentially enters a particle decomposition cavity formed in the middle of the inner end of the decomposition cavity 4 tangentially through the water inlet 2, the annular groove 4a water inlet, large-particle-size impurities in the water are blocked outside the pore plate 5 and move at a high speed under the action of tangential water impact force, and are subjected to collision, friction, interception and other physical contact with dust particles 3 are continuously decomposed and crushed, smashed, and crushed, when the geometric diameter of the particles is smaller than the diameter of the particle is 5, and the particle size is smaller than the diameter of the particle is smaller than the diameter and the diameter of the particle size and the particle size.
When the top coal is discharged and the inserting plate stretches out, a first control liquid inlet 20 positioned on the right side in fig. 1 is communicated with a high-pressure emulsion liquid pipeline, emulsion liquid enters the upper part of a piston 13 in an upper cavity of a right-side piston cylinder body, the piston 13 moves downwards under the action of emulsion liquid pressure, the piston 13 and a connecting rod 9 fixedly connected through threads move downwards synchronously, when the synchronous downwards moving distance of the two is more than 2.0mm, the upper end of the connecting rod 9 is separated from a valve core head fixing seat 11, the acting force loaded on the valve core head fixing seat 11 by the connecting rod 9 disappears, the connecting rod 9 continuously moves downwards under the action of liquid pressure for 2.5mm to reach the end of the current stroke, the valve core head fixing seat 11 without the action of liquid pressure and the valve core head 7 screwed with the valve core head fixing seat 11 downwards move for 2.5mm to reach the end of the current stroke under the action of elasticity of a self-resetting elastic element 12 formed by a compression spring, the moving valve core head 7 blocks a first horn 22 which is originally opened, namely, the first water outlet 18 is blocked from being communicated with the lower section of a valve cavity of the first valve cavity 16, namely the valve head 18 and the lower section of the valve cavity 2 are stopped, the coal spraying passage is stopped, and the spray spraying frame is stopped, and the coal discharging frame is stopped.
When the rear stand column of the bracket descends, a second control liquid inlet 21 positioned at the left side in the figure 1 is communicated with a high-pressure emulsion liquid pipeline, emulsion liquid enters the lower part of a piston 13 in the lower cavity of the left piston cylinder body, the piston 13 moves upwards under the action of emulsion liquid pressure, and when the valve cavity baffle 8 adopts a movable structure, the valve cavity baffle 8 moves downwards to a designed position; after the piston 13 moves upwards by 2.5mm synchronously with the connecting rod 9 fixedly connected through threads, the upper end surface of the connecting rod 9 is in close contact with the valve core head fixing seat 11, the piston 13 continuously moving upwards drives the valve core head fixing seat 11 and the valve core head 7 screwed with the valve core head fixing seat 11 through the connecting rod 9, the elastic force of the self-reset elastic element 12 formed by a compression spring is overcome to move upwards by 2mm to reach the end point of the current stroke, the moving valve core head 7 opens the originally closed second horn mouth 23 and the second water outlet 19, after the second horn mouth 23 is opened, the second water outlet 19 is communicated with the lower section of the valve cavity of the second valve cavity 17, the second valve cavity 17 is communicated with the lower section of the valve cavity of the first valve cavity 16 through the communication hole 6, the communication between the second water outlet 19 and the water inlet 2 is realized, static pressure water containing impurities sequentially passes through the water inlet 2, the annular groove 4a and the middle part of the water inlet hole tangentially enters the particle decomposition cavity formed in the middle of the decomposition tool apron 4, large-particle-size impurities in water are blocked outside the pore plate 5 and move at a high speed under the action of tangential water impact force, and collide with the dust particle decomposition tool 3, friction, the dust particles are blocked by the dust particles are sprayed and the dust particles are discharged from the top of the pore plate 5, and the dust particle size is discharged from the pore plate when the dust particle jet is crushed, and the dust particle dust particles pass through the pore plate is discharged from the pore plate through the pore plate when the pore plate is in the diameter and the dust particle jet hole is in the dust particle size has the dust particle size.
When the rear stand column of the bracket rises, a first control liquid inlet 20 positioned at the left side in fig. 1 is communicated with a high-pressure emulsion pipeline, emulsion enters the upper part of a piston 13 in an upper cavity of a cylinder body of a left piston cylinder, the piston 13 moves downwards under the action of emulsion pressure, the piston 13 is fixedly connected with a connecting rod 9 through threads, when a moving piston and the connecting rod 9 move downwards by 2.5mm, the upper end of the connecting rod 9 is separated from a valve core head fixing seat 11, the acting force of the connecting rod 9 on the valve core head fixing seat 11 disappears, the connecting rod 9 continuously moves downwards by 2mm under the action of the hydraulic pressure to reach the end of the stroke, the valve core head fixing seat 11 without the action of the hydraulic pressure and the valve core head 7 hinged with the valve core head fixing seat 11 move downwards by 2mm under the action of the elasticity of a self-resetting elastic element 12 formed by a compression spring, the moving valve core head 7 seals a second bellmouth 23 and a second water outlet 19 which are originally opened, and the water supply of spray to the falling column spray frame is stopped.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (8)
1. The anti-blocking hydraulic support spraying dust fall control valve comprises a valve body (1), wherein a water inlet (2), a water outlet, a control liquid inlet and a valve cavity are arranged on the valve body (1), the water outlet is communicated with the water inlet (2) through the valve cavity and a horn mouth, a valve core component is arranged in the valve cavity, and the valve core component moves under the action of control liquid of two control liquid inlets to form connection and disconnection of the water inlet (2) and the water outlet; the anti-blocking filter device comprising a dust particle decomposing knife (3) is arranged between the water inlet (2) and the valve cavity;
the valve cavity comprises a valve cavity upper section and a valve cavity lower section; the valve core assembly comprises a driving assembly and an executing assembly comprising a valve core head (7), the driving assembly is used for driving the executing assembly to move, and the executing assembly is used for opening or sealing the bell mouth; the upper section of the valve cavity is used for setting the driving component and is communicated with the two control liquid inlets; the lower section of the valve cavity is used for setting the execution assembly and is communicated with the water inlet (2) and the water outlet; the upper section of the valve cavity and the lower section of the valve cavity are separated into two independent spaces through a valve cavity baffle (8); the driving assembly and the executing assembly are connected through a connecting rod (9), the middle section rod part of the connecting rod (9) passes through the valve cavity baffle (8) and is in sliding fit with the valve cavity baffle (8) through a matching hole arranged on the valve cavity baffle (8), and sealing penetrating covers (10) penetrating through the connecting rod (9) and forming a seal for the matching hole are arranged at two ends of the valve cavity baffle (8);
the driving assembly comprises a piston (13), and the piston (13) is fixedly connected to the upper end of the connecting rod (9); the valve cavity baffle (8) is arranged through the bottom of the upper section of the valve cavity, the valve cavity baffle (8) is movably arranged at the bottom of the upper section of the valve cavity and is in liquid sealing connection with the inner wall of the upper section of the valve cavity through a baffle sealing ring (24), and the valve cavity baffle (8) forms the bottom of the other end of the piston cylinder body provided with the piston (13);
the execution assembly comprises a valve core head fixing seat (11), the valve core head fixing seat (11) is movably arranged in the lower section of the valve cavity, a self-resetting elastic element (12) is arranged between the valve core head fixing seat (11) and the valve cavity baffle (8), the valve core head fixing seat (11) is connected with the connecting rod (9) through a synchronous moving connecting structure, and the moving connecting structure is used for pulling the valve core head fixing seat (11) to synchronously move upwards after the connecting rod (9) moves upwards for a set distance; the valve core head (7) is screwed and fixed at the lower end of the valve core head fixing seat (11).
2. The anti-blocking hydraulic support spray dust fall control valve according to claim 1, wherein the anti-blocking filter device comprises a decomposition tool apron (4), the decomposition tool apron (4) is fixedly connected in an anti-blocking filter device mounting hole formed in the valve body (1) in a sealing manner, an orifice plate (5) is arranged at the bottom of the anti-blocking filter device mounting hole, the orifice plate (5) is fixedly abutted by the decomposition tool apron (4), a particle decomposition cavity is formed in the middle of the inner end of the decomposition tool apron (4), the particle decomposition cavity is communicated with the water inlet (2), and the decomposition tool apron (4) is fixedly connected with the dust particle decomposition tool (3) through the bottom of the particle decomposition cavity; the pore plate (5) is provided with a water passing hole, and two ends of the water passing hole are respectively communicated with the particle decomposition cavity and the valve cavity.
3. The anti-blocking hydraulic support spray dust fall control valve according to claim 2, wherein an annular groove (4 a) is formed in the outer wall of the decomposing tool apron (4), the annular groove (4 a) is communicated with the water inlet (2), and a water inlet hole which is close to the inner wall of the particle decomposing cavity is formed in the bottom of the annular groove (4 a) and communicated with the particle decomposing cavity.
4. The anti-blocking hydraulic support spray dust fall control valve according to claim 1, wherein two valve cavities are arranged and two valve cavities are communicated through a communication hole (6) so as to form two water outlets which can be respectively communicated with the water inlet (2) through the valve cavities and a bell mouth; or the two water outlets are simultaneously communicated with the water inlet (2) through a valve cavity and a bell mouth, a valve core head (7) is arranged in the valve core assembly, and the valve core head (7) is used for forming a plug for the bell mouth.
5. The anti-blocking hydraulic support spray dust control valve according to claim 4, characterized in that the communication hole (6) is connected to the lower sections of the two valve chambers.
6. The anti-blocking hydraulic support spray dust fall control valve according to claim 1, wherein the lower section of the valve cavity is in a cylindrical hole structure; the valve core head fixing seat (11) is in sliding fit with a cylindrical hole at the lower section of the valve cavity; the valve core head (7) is of a stepped shaft structure, the valve core head (7) is used for plugging a cylindrical working part of the bell mouth, and the diameter of the cylindrical working part is smaller than the large diameter of the bell mouth at the lower section of the valve cavity.
7. The anti-blocking hydraulic support spray dust fall control valve according to claim 1, wherein the synchronous movement connecting structure comprises a terminal arranged at the lower end of a connecting rod (9) and a terminal accommodating space arranged at the upper part of a valve core head fixing seat (11); the bottom of a threaded hole on the valve core head fixing seat (11) for screwing the valve core head (7) is of a blind hole structure, a through hole penetrating through the connecting rod (9) is formed in the bottom of the blind hole, the blind hole forms an end head accommodating space, and when the valve core head (7) is in a state of plugging the bell mouth, the end head accommodating space is further provided with a space allowing the end head to axially move for a set distance.
8. The anti-blocking hydraulic support spray dust fall control valve according to claim 1, wherein the piston (13) is in sliding fit in a cylinder sleeve (14), the cylinder sleeve (14) is arranged in the upper section of the valve cavity, a limit seat (15) is arranged at the outer end of the cylinder sleeve (14), and the limit seat (15) forms a cylinder bottom at one end of a piston cylinder body provided with the piston (13); one of the two control liquid inlets is arranged on the limiting seat (15) and is positioned above the piston (13); the other is arranged through the valve body (1) and the upper section of the valve cavity and is positioned below the piston (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711335387.6A CN108050275B (en) | 2017-12-13 | 2017-12-13 | Anti-blocking type hydraulic support spraying dust fall control valve |
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| CN201711335387.6A CN108050275B (en) | 2017-12-13 | 2017-12-13 | Anti-blocking type hydraulic support spraying dust fall control valve |
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| CN108050275B true CN108050275B (en) | 2023-11-28 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109237080A (en) * | 2018-10-30 | 2019-01-18 | 河南鑫之辉机电设备有限公司 | A kind of six slide valves of mechanical one and application method |
| CN109354266B (en) * | 2018-12-21 | 2021-11-26 | 徐荣霞 | Multi-layer filtering type purifying equipment suitable for treating sewage |
| CN109939486A (en) * | 2019-03-20 | 2019-06-28 | 武汉泰歌氢能汽车有限公司 | A kind of fuel battery engines runner transform particulate filter |
| CN111075953B (en) * | 2019-10-07 | 2023-07-07 | 阿特拉斯·科普柯空气动力股份有限公司 | Flush valve, dust collector and dust collection system |
| CN113719308A (en) * | 2021-09-09 | 2021-11-30 | 国能神东煤炭集团有限责任公司 | Support system for realizing air-water linkage spraying |
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| FR2545735A1 (en) * | 1983-05-13 | 1984-11-16 | Saarbergwerke Ag | Advancing mine support frames dust settling sprinkler system |
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