CN115625053B - Method and spraying device for improving gas concentration by spraying and plugging coal wall - Google Patents
Method and spraying device for improving gas concentration by spraying and plugging coal wall Download PDFInfo
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- CN115625053B CN115625053B CN202211280076.5A CN202211280076A CN115625053B CN 115625053 B CN115625053 B CN 115625053B CN 202211280076 A CN202211280076 A CN 202211280076A CN 115625053 B CN115625053 B CN 115625053B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention relates to the field of coal wall spraying equipment, in particular to a method and a spraying device for improving gas concentration by spraying plugging on a coal wall, which comprises a spray gun body, wherein one end of the spray gun body is provided with a gas spraying structure, a spraying cavity is arranged in the spray gun body, the spraying cavity penetrates through one end close to the gas spraying structure, an adjusting valve is arranged in the spraying cavity, the adjusting valve comprises a valve shell, a valve groove is arranged in the valve shell, a valve core is adapted to the valve groove through a spring, two agent guiding ports penetrating through the valve groove, a second air port and a first air port are arranged on the surface of the valve groove, and the two agent guiding ports and the second air port and the first air port are arranged along the sliding direction of the valve core.
Description
Technical Field
The invention relates to the field of coal wall spraying equipment, in particular to a method and a spraying device for improving gas concentration by spraying and plugging coal walls.
Background
Gas is the main accessory product in coal mining, not only for coal mineThe safety production has an influence and is also a main greenhouse gas, and the capability of generating the greenhouse effect is far greater than that of CO 2 Other greenhouse gases such as gas is a disaster factor in coal exploitation and is an efficient and clean energy source, so that gas extraction is performed as much as possible while coal is exploited, namely 'coal and gas co-extraction' is implemented, but the gas extraction efficiency is very low in the world as far as the current technical conditions are concerned, the mine gas extraction rate is low not only because coal seams in China generally have the characteristics of high deterioration degree, low permeability and low gas saturation, but also because air is mixed into extraction drilling holes along coal wall cracks, the concentration of the extracted gas is relatively low, and the practical conditions restrict the exploitation and utilization of coal seam gas in China;
the method for spraying the coating on the surface of the coal wall generally adopts an organic polymer double-liquid foaming agent as the coating, adopts spraying equipment to mix the two components of the polyurethane combined foaming material to completely cover the whole roadway wall section, and the mixed two components of the foaming agent are rapidly foamed on the surface of the coal wall to form a plugging wall, so that cracks of the filled coal wall are effectively cured, the air permeability coefficient of the surface layer of the coal wall can be reduced, and the gas extraction concentration is improved;
the two-component organic foaming material is sprayed out after being mixed in a spraying gun, and the organic foaming mixture is easy to remain in a spray gun opening after stopping spraying, so that the spraying is blocked and the spray gun is influenced to be reused if the foaming material in the spray gun opening is solidified due to long stopping spraying time.
Disclosure of Invention
The invention aims to solve the following problems in the prior art: the two-component organic foaming material is sprayed out after being mixed in a spraying gun, and the organic foaming mixture is easy to remain in a spray gun opening after stopping spraying, so that the spraying is blocked and the spray gun is influenced to be reused if the foaming material in the spray gun opening is solidified due to long stopping spraying time.
The invention provides a coal wall spraying device, which comprises a spray gun body, wherein one end of the spray gun body is provided with an air spraying structure, a spraying cavity is arranged in the spray gun body, the spraying cavity penetrates through one end close to the air spraying structure, an adjusting valve is arranged in the spraying cavity, the adjusting valve comprises a valve shell, a valve groove is arranged in the valve shell, a valve core is adapted in the valve groove through a spring, two agent guiding ports, a second air port and a first air port which penetrate through the valve groove are formed in the surface of the valve groove, the two agent guiding ports, the second air port and the first air port are arranged along the sliding direction of the valve core, two agent valve ports and an air valve port are arranged on the surface of the valve core, and the agent valve ports are aligned with the agent guiding ports, and the air valve port is aligned with the second air port and the first air port;
one side of each agent guiding port is communicated with a spraying cavity, the other side of each agent guiding port is respectively connected with a first feeding assembly and a second feeding assembly, one sides of each second air port and each first air port are jointly connected with an air supply assembly, the other ends of the first air ports are communicated with the spraying cavities, the other ends of the second air ports are communicated with the air spraying structure, and the valve core is connected with a switch assembly.
Preferably, the switch assembly comprises a handle, the handle is fixedly connected with the spray gun body, one end of the handle, which is close to the spray gun body, is elastically rotated by a torsion spring to form a holding rod, a sliding groove is formed in the surface of the handle, a sliding block is slid in the sliding groove, the sliding block is rotationally connected with a connecting rod, the connecting rod is rotationally connected with the holding rod, a steel wire is fixed on the sliding block, and the steel wire is connected with the end part of the valve core.
Preferably, the bottom of the valve casing and the top of the holding rod are both provided with guide wheels, and the steel wire bypasses the guide wheels to connect the valve core and the sliding block.
Preferably, the top of the valve core is provided with a sealing cavity, a stop block is slidably matched in the sealing cavity, the surface of the stop block is provided with a through hole which penetrates up and down, the stop block is fixedly provided with a needle rod, the needle rod slides out of the sealing cavity to be fixedly connected with the top of the valve groove, and damping liquid is filled in the sealing cavity.
Preferably, one ends of the two groups of agent guiding ports are respectively communicated with a first agent pipe and a second agent pipe, the first agent pipe and the second agent pipe are respectively connected with a first feeding component and a second feeding component, one ends of the two groups of agent guiding ports are communicated with a spraying cavity through the agent guiding pipes, one sides of the second air ports and the first air ports are jointly connected with an air supply pipe, the air supply pipe is connected with the air supply component, the other ends of the first air ports are communicated with the spraying cavity through the first air pipe, and the other ends of the second air ports are communicated with an air spraying structure through the second air pipe.
Preferably, the middle part of the spray cavity is sealed to rotate, the periphery of the through pipe is provided with a ring groove, the outer wall of the through pipe is provided with a blade handle which is matched in the ring groove, the inner wall of the through pipe is provided with a stirring handle, the second air pipe is communicated with the ring groove along the tangential direction of the ring groove, the edge of the ring groove is tangentially communicated with a third air pipe, and the third air pipe is communicated with the air spray structure.
Preferably, the air spraying structure comprises an air groove, the air groove is communicated with the third air pipe, the end part of the spray gun body is provided with a conical concave opening, a plurality of outer ring air holes and inner ring air holes are annularly distributed around the conical concave opening at equal angles, the outer ring air holes and the inner ring air holes are communicated with the air groove, and the end part of the spray cavity is in conical shrinkage communication at the central position of the conical concave opening.
The method for improving the gas concentration by spraying and plugging the coal wall based on the spraying device comprises the following specific steps:
A. the first feeding component and the second feeding component respectively boost pressure to the two agent guiding ports to provide two groups of foaming agents, and the air supply component transmits high-pressure air to the second air port and the first air port;
B. the valve core is pulled by the switch component to overcome the elastic force drop, so that the two groups of agent valve ports are aligned with the two groups of agent guiding ports, the gas valve ports are aligned with the second gas ports, the two groups of foaming agents are led into the spraying cavity to be mixed to form a mixing agent, the mixing agent is sprayed out from the end part of the spraying cavity, and high-pressure gas is sprayed to the mixing agent by the gas spraying structure, so that the sprayed mixing agent is atomized;
C. when the spraying is stopped, the valve core is loosened through the switch assembly and reset until the air valve port is aligned with the first air port, at the moment, the second air port and the agent guiding port are blocked, and high-pressure air is guided into the spraying cavity through the first air port to spray the residual mixture, so that the spraying cavity and the port thereof are kept unblocked.
Compared with the related art, the method and the spraying device for improving the gas concentration by spraying the plugging of the coal wall have the following beneficial effects:
1. according to the invention, the valve core is lifted and slid in the valve groove, so that the agent valve port and the agent guiding port are aligned, the gas valve port and the second gas port are aligned, the joint filling spraying on the coal wall is realized, the valve core is adjusted to move, when the gas valve port is aligned with the first gas port, gas is led into the spraying cavity, the residual mixture is sprayed out under high pressure, and the blockage of the inside and the port of the spraying cavity caused by the foaming of the residual mixed spraying agent is avoided;
2. the invention adopts the second air pipe to guide high-pressure air along the tangential direction of the annular groove and leads the high-pressure air to be discharged by the third air pipe, so that the blade handle is driven by the air flow to rotate the through pipe and the stirring handle, the full mixing of the two-component spraying agent in the spraying cavity is facilitated, the foaming and shaping can be quickly carried out after the spraying agent is sprayed, and the effect generating efficiency of the spraying agent is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the gun part structure of the present invention;
FIG. 3 is a schematic diagram of the distribution structure of the air-jet structure, the spray gun and the regulating valve of the invention;
FIG. 4 is a schematic diagram of the structure of the air jet structure of the present invention;
FIG. 5 is a schematic view of the connection structure of the first air pipe and the second air pipe according to the present invention;
FIG. 6 is a schematic view of the connection structure of the second air pipe, the third air pipe and the ring groove according to the present invention;
FIG. 7 is a schematic diagram of a pipeline connection structure of a regulating valve according to the present invention;
FIG. 8 is a schematic view of the external structure of the regulating valve of the present invention;
FIG. 9 is a schematic view of the internal structure of the regulating valve of the present invention;
FIG. 10 is a schematic view of the internal structure of the valve element of the present invention;
fig. 11 is a schematic structural diagram of a switch assembly according to the present invention.
Reference numerals in the drawings: 1. a first feed assembly; 2. a second feed assembly; 3. a gas supply assembly; 4. a spray gun body; 5. a switch assembly; 51. a handle; 52. a chute; 53. a slide block; 54. a grip; 55. a connecting rod; 56. a steel wire; 6. a first dosage tube; 7. a second dose tube; 8. an air supply pipe; 9. a regulating valve; 91. a valve housing; 92. a valve core; 93. a valve spool; 94. a guiding agent port; 95. a second gas port; 96. a first gas port; 97. a dosing valve port; 98. a gas valve port; 99. sealing the cavity; 910. a stop block; 911. a through port; 912. a needle bar; 10. a through pipe; 11. a petiole; 12. a ring groove; 13. an air tank; 14. outer ring air holes; 15. an inner ring air hole; 16. a spray cavity; 17. a guide tube; 18. a first air tube; 19. a second air pipe; 20. a third air pipe; 21. stirring handle.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Example 1
As shown in fig. 1, the coal wall spraying device consists of three parts, namely a feed agent, a gas supply and a spray gun;
the structure of the feed part is as follows:
the first feeding component 1 and the second feeding component 2 can be high-pressure finished product filling components of two organic combination foaming materials;
the first feeding component 1 and the second feeding component 2 can also be two independent containers, a liquid pump is arranged outside the containers, the liquid inlet end of the liquid pump is connected with the inside of the container, and the liquid outlet end of the liquid pump is connected with the spray gun through a hose;
the structure of the air supply part is as follows:
the air supply assembly 3 can be an independent booster air pump or other devices for stabilizing pressure and outputting air, but a moisture filter is arranged at the air exhaust end and is connected with the spray gun through a hose;
two hoses of the foaming agent and the air supply hose need to be bound to form an independent soft conducting line, so that disorder and difficult operation of the pipeline are avoided;
the spray gun part structure is as follows:
as shown in fig. 3 and 4, the spray gun body 4 is a cylinder, a cylindrical spray cavity 16 is arranged in the spray gun body 4, the end part of the spray cavity 16 is in conical reduction and communicated with the center position of the front end of the spray gun body 4, an air spray structure is arranged at the front end of the spray gun body 4, the air spray structure comprises an annular air groove 13, the front end surface of the spray gun body 4 is provided with a conical concave opening, a plurality of outer ring air holes 14 and inner ring air holes 15 are annularly distributed around the conical concave opening at equal angles, and the outer ring air holes 14 and the inner ring air holes 15 are communicated with the air groove 13;
as shown in fig. 1, 2 and 3, a first agent pipe 6, a second agent pipe 7 and an air supply pipe 8 are embedded and fixed at the tail part of the spray gun body 4, two hoses of the first feeding assembly 1 and the second feeding assembly 2 are connected with the ends of the first agent pipe 6 and the second agent pipe 7, and a hose of the air supply assembly 3 is connected with the air supply pipe 8;
as shown in fig. 5, 8 and 9, an upward square groove is formed in the bottom of the spray gun body 4, the regulating valve 9 is adapted to penetrate into the square groove from bottom to top, a screw is used for fixing the regulating valve 9 in the square groove from the spray gun body 4, the regulating valve 9 comprises a valve shell 91, a valve groove 93 is formed in the valve shell 91, a valve core 92 is slidably adapted in the valve groove 93, the valve core 92 can slidably lift in the valve groove 93, a spring is arranged at the bottom of the valve core 92, two groups of agent guiding ports 94, a second air port 95 and a first air port 96 are formed in the surface of the valve shell 91, the agent guiding ports 94, the second air port 95 and the first air port 96 are all communicated with the valve groove 93, the two groups of agent guiding ports 94 are distributed up and down, the first air port 96 and the second air port 95 are distributed up and down, two agent valve ports 97 and an air valve port 98 are formed in the surface of the valve core 92, the agent valve port 97 is aligned with the agent guiding ports 94, and the air valve port 98 is aligned with the second air port 95 and the first air port 96;
as shown in fig. 3, 5 and 7, the first agent tube 6 and the second agent tube 7 are respectively communicated with the rear ends of the agent guiding openings 94, the air supply tube 8 is provided with two branch ends respectively connected with the rear ends of the second air openings 95 and the first air openings 96, the front ends of the two agent guiding openings 94 are communicated with the spraying cavity 16 through the agent guiding tube 17, the first air openings 96 are communicated with the spraying cavity 16 through the first air tube 18, and the second air openings 95 are communicated with the air groove 13 through the second air tube 19;
as shown in fig. 11, the switch assembly 5 comprises a handle 51, the handle 51 is fixedly connected with a spray gun body 4, a holding rod 54 is elastically and rotatably installed at a position of the handle 51, which is close to the spray gun body 4, through a torsion spring, a sliding groove 52 is formed in the surface of the handle 51, a sliding block 53 is slidably arranged in the sliding groove 52, a connecting rod 55 is rotatably connected with the sliding block 53, the connecting rod 55 is rotatably connected with the holding rod 54, guide wheels are respectively arranged at the bottom of a valve shell 91 and the top of the holding rod 54, and a steel wire 56 bypasses the guide wheels to connect a valve core 92 and the sliding block 53;
when spraying, the following steps are carried out:
the handle 51 is held by hand, the finger is buckled and pulled to close the holding rod 54, the connecting rod 55 is pushed to swing so that the sliding block 53 slides downwards along the sliding groove 52, the steel wire 56 is pulled so that the valve core 92 slides downwards in the valve groove 93 against the elasticity, the two agent valve ports 97 are aligned with the two agent guiding ports 94, the air valve ports 98 are aligned with the second air ports 95, the spraying foaming components provided by the first feeding component 1 and the second feeding component 2 are guided into the spraying cavity 16 through the agent guiding pipe 17 to be mixed and sprayed out from the tip of the spraying cavity 16, the high-pressure air provided by the air feeding component 3 is guided into the air groove 13 through the second air pipe 19 and then sprayed out from the outer ring air holes 14 and the inner ring air holes 15, and the sprayed air makes the sprayed mixed spraying agent atomized to act on the surface of the coal wall to form a plugging layer;
stopping spraying and cleaning the gun:
as shown in fig. 11, the holding rod 54 is incompletely loosened, the sliding block 53 is reset for a certain distance, the valve core 92 is lifted to the air valve port 98 to be aligned with the first air port 96 under the action of elasticity, at this time, the agent guiding port 94 and the second air port 95 are staggered and blocked, high-pressure air is led into the spraying cavity 16 through the first air port 96 and the first air pipe 18, residual mixture in the spraying cavity 16 is sprayed out under high pressure, then the holding rod 54 is completely loosened, the first air port 96 is blocked, and the blocking of the inside and the port of the spraying cavity 16 caused by foaming of the residual mixed spraying agent is avoided;
as shown in fig. 10, the top of the valve core 92 is provided with a sealing cavity 99, a stop block 910 is vertically and slidably fitted in the sealing cavity 99, a plurality of through holes 911 penetrating up and down are formed on the surface of the stop block 910, a needle rod 912 is fixed on the stop block 910, the needle rod 912 slides out of the sealing cavity 99 to be fixedly connected with the top of the valve groove 93, and damping liquid is filled in the sealing cavity 99;
when the valve core 92 is driven to move downwards to open the spraying pipeline, the stop block 910 is relatively moved upwards in the sealing cavity 99, damping liquid needs to pass through the through hole 911, damping force is generated to slow down the downward movement of the valve core 92, the damping force is used for increasing the time for the agent valve port 97 to pass through the first air port 96, when the agent valve port 97 passes through the first air port 96, gas is led into the spraying cavity 16 for cleaning before spraying, and the overlapping time of the agent valve port 97 and the first air port 96 is also increased when the valve core 92 is closed by upward movement, so that air blowing cleaning of the spraying cavity 16 is carried out.
Example two
As shown in fig. 3, 5 and 6, a rotary through pipe 10 is sealed in the middle of a spray cavity 16, the inner cavity of the through pipe 10 and the spray cavity 16 form a complete conduction space, a ring groove 12 is formed in the periphery of the through pipe 10, a plurality of blade handles 11 are annularly distributed on the outer wall of the through pipe 10, the blade handles 11 are matched in the ring groove 12, a stirring handle 21 is arranged on the inner wall of the through pipe 10, a second air pipe 19 is communicated with the ring groove 12 along the tangential direction of the ring groove 12, a third air pipe 20 is tangentially communicated with the edge of the ring groove 12, and the third air pipe 20 is communicated with an air spray structure;
when spraying is performed, high-pressure air is tangentially introduced into the annular groove 12 through the second air pipe 19, the blade handle 11 is impacted by the high-pressure air to drive the through pipe 10 to rotate, the high-pressure air is discharged from the third air pipe 20 and introduced into the air groove 13, the stirring handle 21 in the rotating through pipe 10 mixes the two-component spraying agent in the spraying cavity 16, so that the two-component spraying agent can be fully combined and rapidly foamed and shaped after being sprayed, and the effect generating efficiency of the spraying agent is improved;
example III
The method for improving the gas concentration by spraying and plugging the coal wall based on the spraying device comprises the following specific steps:
A. the first feeding component 1 and the second feeding component 2 respectively boost pressure to the two blowing agent guiding ports 94 to provide two groups of blowing agents, and the air supply component 3 conducts high-pressure air to the second air port 95 and the first air port 96;
B. the valve core 92 is pulled by the switch assembly 5 to overcome the elastic force reduction, so that two groups of agent valve ports 97 are aligned with two groups of agent guiding ports 94, the air valve ports 98 are aligned with the second air ports 95, two groups of foaming agents are led into the spraying cavity 16 to be mixed to form a mixture, the mixture is sprayed out from the end part of the spraying cavity 16, and high-pressure air is sprayed to the mixture by the air spraying structure, so that the sprayed mixture is atomized;
C. when the spraying is stopped, the valve core 92 is loosened through the switch assembly 5 and reset until the air valve port 98 is aligned with the first air port 96, at this time, the second air port 95 and the agent guiding port 94 are blocked, and high-pressure air is led into the spraying cavity 16 through the first air port 96 to spray the rest mixture, so that the spraying cavity 16 and the ports thereof are kept unblocked.
Claims (8)
1. The coal wall spraying device comprises a spraying gun body (4), and is characterized in that one end of the spraying gun body (4) is provided with an air spraying structure, a spraying cavity (16) is formed in the spraying gun body (4), the spraying cavity (16) penetrates through one end close to the air spraying structure, an adjusting valve (9) is arranged in the spraying cavity (16), the adjusting valve (9) comprises a valve shell (91), a valve groove (93) is formed in the valve shell (91), a valve core (92) is adapted in the valve groove (93) through a spring, two agent guiding ports (94) penetrating through the valve groove (93), a second air port (95) and a first air port (96) are formed in the surface of the valve groove (93), the two agent guiding ports (94) and the second air port (95) and the first air port (96) are arranged along the sliding direction of the valve core (92), two agent valve ports (97) and one air valve port (98) are formed in the surface of the valve core (92), the agent valve port (97) is aligned with the agent guiding ports (94), and the air valve port (98) is aligned with the second air port (95) and the first air port (96).
One side of two lead agent mouth (94) communicates spouts chamber (16), and the opposite side of two lead agent mouths (94) is connected with first feed subassembly (1), second feed subassembly (2) respectively, one side of second gas port (95), first gas port (96) is connected with air feed subassembly (3) jointly, and the other end intercommunication of first gas port (96) spouts chamber (16), and the other end intercommunication of second gas port (95) gas spouts the structure, case (92) are connected with switch assembly (5).
2. The coal wall spraying device according to claim 1, wherein the switch assembly (5) comprises a handle (51), the handle (51) is fixedly connected with the spray gun body (4), one end of the handle (51) close to the spray gun body (4) is elastically rotated by a torsion spring to form a holding rod (54), a sliding groove (52) is formed in the surface of the handle (51), a sliding block (53) slides in the sliding groove (52), the sliding block (53) is rotationally connected with a connecting rod (55), the connecting rod (55) is rotationally connected with the holding rod (54), a steel wire (56) is fixed on the sliding block (53), and the steel wire (56) is connected with the end portion of the valve core (92).
3. The coal wall spraying device according to claim 2, wherein the bottom of the valve housing (91) and the top of the holding rod (54) are provided with guide wheels, and the steel wire (56) bypasses the guide wheels to connect the valve core (92) and the sliding block (53).
4. The coal wall spraying device according to claim 2, wherein the top of the valve core (92) is provided with a sealing cavity (99), a stop block (910) is slidably fitted in the sealing cavity (99), a through hole (911) penetrating up and down is formed in the surface of the stop block (910), a needle bar (912) is fixed on the stop block (910), the needle bar (912) slides out of the sealing cavity (99) and is fixedly connected with the top of the valve groove (93), and damping liquid is filled in the sealing cavity (99).
5. The coal wall spraying device according to claim 1, wherein one ends of two groups of agent guiding ports (94) are respectively communicated with a first agent pipe (6) and a second agent pipe (7), the first agent pipe (6) and the second agent pipe (7) are respectively connected with a first feeding component (1) and a second feeding component (2) through hoses, one ends of the two groups of agent guiding ports (94) are communicated with a spraying cavity (16) through the agent guiding pipes (17), one sides of the second air ports (95) and the first air ports (96) are jointly connected with an air supply pipe (8), the air supply pipe (8) is connected with the air supply component (3), the other ends of the first air ports (96) are communicated with the spraying cavity (16) through the first air pipes (18), and the other ends of the second air ports (95) are communicated with an air spraying structure through the second air pipes (19).
6. The coal wall spraying device according to claim 5, wherein the middle part of the spraying cavity (16) is hermetically rotated to form a through pipe (10), a ring groove (12) is formed in the periphery of the through pipe (10), a blade handle (11) which is fit in the ring groove (12) is formed on the outer wall of the through pipe (10), a stirring handle (21) is formed on the inner wall of the through pipe (10), the second air pipe (19) is communicated with the ring groove (12) along the tangential direction of the ring groove (12), a third air pipe (20) is tangentially communicated with the edge of the ring groove (12), and the third air pipe (20) is communicated with the air spraying structure.
7. The coal wall spraying device according to claim 6, wherein the air spraying structure comprises an air groove (13), the air groove (13) is communicated with the third air pipe (20), a conical concave opening is formed in the end portion of the spray gun body (4), a plurality of outer ring air holes (14) and inner ring air holes (15) are annularly distributed around the conical concave opening at equal angles, the outer ring air holes (14) and the inner ring air holes (15) are communicated with the air groove (13), and the end portion of the spray cavity (16) is in conical shrinkage communication at the central position of the conical concave opening.
8. A method for improving gas concentration by spraying and plugging coal wall based on the spraying device of any one of claims 1-7, which is characterized by comprising the following specific steps:
A. the first feeding component (1) and the second feeding component (2) respectively pressurize and provide two groups of foaming agents for the two agent guiding ports (94), and the air supply component (3) conducts high-pressure air to the second air port (95) and the first air port (96);
B. the valve core (92) is pulled by the switch component (5) to overcome the elastic force reduction, so that two groups of agent valve ports (97) are aligned with two groups of agent guiding ports (94), the air valve ports (98) are aligned with the second air ports (95), two groups of foaming agents are led into the spraying cavity (16) to be mixed to form a mixture, the mixture is sprayed out from the end part of the spraying cavity (16), and high-pressure air is sprayed to the mixture by the air spraying structure, so that the sprayed mixture is atomized;
C. when the spraying is stopped, the valve core (92) is loosened through the switch assembly (5) and reset until the air valve opening (98) is aligned with the first air opening (96), at the moment, the second air opening (95) and the agent guiding opening (94) are blocked, and high-pressure air is led into the spraying cavity (16) through the first air opening (96) to spray the residual mixture, so that the spraying cavity (16) and the ports thereof are kept smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211280076.5A CN115625053B (en) | 2022-10-19 | 2022-10-19 | Method and spraying device for improving gas concentration by spraying and plugging coal wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211280076.5A CN115625053B (en) | 2022-10-19 | 2022-10-19 | Method and spraying device for improving gas concentration by spraying and plugging coal wall |
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| Publication Number | Publication Date |
|---|---|
| CN115625053A CN115625053A (en) | 2023-01-20 |
| CN115625053B true CN115625053B (en) | 2023-08-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204261366U (en) * | 2014-11-19 | 2015-04-15 | 湖南瑞翔新材料股份有限公司 | Atomizing lance |
| CN105805362A (en) * | 2016-05-19 | 2016-07-27 | 江苏恒达动力科技发展股份有限公司 | Large-caliber quick high-pressure air valve |
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| CN214902775U (en) * | 2021-06-30 | 2021-11-30 | 济南一诺振华防腐保温工程有限公司 | Small-size electronic two ingredient sprinkling irrigation machines |
| CN216224915U (en) * | 2021-11-12 | 2022-04-08 | 铁科腾跃科技有限公司 | Small-size pneumatic two ingredient spraying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210268321A1 (en) * | 2018-07-09 | 2021-09-02 | Juan Jose Soriano Azorin | System for forming and delivering fluids in gel form by means of a lance with a venturi device |
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| CN204261366U (en) * | 2014-11-19 | 2015-04-15 | 湖南瑞翔新材料股份有限公司 | Atomizing lance |
| CN205731706U (en) * | 2016-05-17 | 2016-11-30 | 复旦大学 | Extra quality mixture spray gun |
| CN105805362A (en) * | 2016-05-19 | 2016-07-27 | 江苏恒达动力科技发展股份有限公司 | Large-caliber quick high-pressure air valve |
| CN210585466U (en) * | 2019-06-26 | 2020-05-22 | 李永生 | Automatic spray gun with automatic control function |
| CN213644574U (en) * | 2020-09-15 | 2021-07-09 | 苏州全裕祥机械设备有限公司 | Coating equipment is with preventing stifled spray gun |
| CN214902775U (en) * | 2021-06-30 | 2021-11-30 | 济南一诺振华防腐保温工程有限公司 | Small-size electronic two ingredient sprinkling irrigation machines |
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| CN115625053A (en) | 2023-01-20 |
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