CN111871635A - Quick-connection variable-diameter spray gun for powder injection mixing - Google Patents
Quick-connection variable-diameter spray gun for powder injection mixing Download PDFInfo
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- CN111871635A CN111871635A CN202010725109.7A CN202010725109A CN111871635A CN 111871635 A CN111871635 A CN 111871635A CN 202010725109 A CN202010725109 A CN 202010725109A CN 111871635 A CN111871635 A CN 111871635A
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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
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Abstract
The utility model discloses a quick connect powder sprays reducing spray gun for mixing, including feed arrangement, water installations, air inlet unit, the toper pipe, reducing pipe and nozzle, feed arrangement includes the return bend, the entry linkage of return bend has the material import, water installations includes water inlet pipe joint and water inlet nozzle, be connected with the water inlet pipeline on the return bend, water inlet pipe joint's bottom and water inlet pipe connection, water inlet pipe joint's bottom is connected with water inlet nozzle, water inlet pipe joint's central line is located same straight line with material import's central line, and water inlet pipe's the direction of intaking opposite with material import's direction of feed, the export and the air inlet unit of return bend are connected, air inlet unit and the access connection of toper pipe, the export and the access connection of reducing pipe of toper pipe, the export and the access connection of nozzle of reducing pipe. This patent makes thin material of spouting leave the nozzle before with water homogeneous mixing, and the non-stick spray tube inner wall.
Description
Technical Field
This patent belongs to thin technical field that spouts, specifically speaking is a quick connection powder sprays mixes and uses reducing spray gun, provides mining automatic patching machine and uses.
Background
When the current thin spraying operation adopts a wet spraying mode, the phenomenon that the sprayed slurry can not be quickly condensed still occurs, and the main reason is caused by the uneven mixing of thin spraying materials.
The variable-diameter spray gun for the thin spraying machine is needed to solve the technical problems that the thin spraying material is not uniformly mixed with water before leaving a nozzle and the inner wall of the spray pipe is bonded.
Disclosure of Invention
This patent provides a quick connection powder sprays reducing spray gun for mixing to the not enough of above-mentioned prior art, and this quick connection powder sprays reducing spray gun for mixing makes thin material of spouting leave the nozzle before with water homogeneous mixing, and non-bonding spray tube inner wall.
In order to achieve the technical purpose, the technical scheme adopted by the patent is as follows:
a reducing spray gun for quickly connecting powder for spraying and mixing comprises a feeding device, a water inlet device, an air inlet device, a conical pipe, a reducing pipe and a nozzle, the feeding device comprises an elbow, the inlet of the elbow is connected with a material inlet, the water inlet device comprises a water inlet pipe joint and a water inlet nozzle, the elbow is connected with a water inlet pipeline, the water inlet pipe joint is connected with the water inlet pipeline, the bottom of the water inlet pipe joint is connected with a water inlet nozzle, the central line of the water inlet pipeline and the central line of the material inlet are positioned on the same straight line, the water inlet direction of the water inlet pipeline is opposite to the feeding direction of the material inlet, the outlet of the bent pipe is connected with the air inlet device, the air inlet device is connected with an inlet of the conical pipe, an outlet of the conical pipe is connected with an inlet of the reducer pipe, and an outlet of the reducer pipe is connected with an inlet of the nozzle.
As a further improved technical scheme of the patent, the bent pipe is a 45-degree bent pipe.
As a further improved technical scheme of this patent, the return bend adopts welding mode and water inlet pipe connection, the return bend adopts welding mode and material access connection.
As a further improved technical scheme of the patent, one side of the air inlet device, which is connected with the conical pipe, is provided with a semi-closed air ring, the semi-closed air ring is formed by an inner bayonet, an outer bayonet and a closed end bottom surface in a surrounding manner, and the semi-closed air ring is communicated with an external air source; a plurality of air outlet grooves are uniformly distributed on the outer side surface of the inner bayonet; the inlet end of the conical tube extends into the open end of the semi-closed gas ring, the periphery of the inlet end of the conical tube is hermetically connected with the inner side surface of the outer bayonet, the outer side surface of the inner bayonet is in contact with the inner periphery of the inlet end of the conical tube, and gas generated by a gas source enters the conical tube through the gas outlet groove after entering the semi-closed gas ring.
As a further improved technical scheme of the patent, the air outlet grooves are semi-cylindrical air outlet grooves, and the radiuses of the air outlet grooves are 3 mm.
As a further improved technical scheme of the patent, the outer surface of the air inlet device is provided with an auxiliary air inlet block, an externally connected air passage communicated with the semi-closed air ring is arranged in the auxiliary air inlet block, and an air source is connected with the externally connected air passage.
As a further improved technical scheme of the patent, the outlet of the elbow is fixedly connected with the air inlet device in a welding mode.
As a further improved technical scheme of the patent, the number of the conical pipes is three, the structures of the conical pipes are the same, and the conical pipes are respectively a conical pipe I, a conical pipe II and a conical pipe III; the inlet of the first conical pipe is connected with an air inlet device; the outlet of the first conical pipe is connected with the inlet of the second conical pipe through a first conical pipe sleeve, and the first conical pipe sleeve is connected with the first conical pipe and the second conical pipe in an inserting manner; the outlet of the second conical pipe and the inlet of the third conical pipe are connected through a second conical pipe sleeve, and the second conical pipe sleeve is connected with the second conical pipe and the third conical pipe in an inserting manner; and an outlet of the conical pipe III is inserted into one end of the reducer pipe.
As a further improved technical scheme of the patent, the inlet end of the first conical pipe is hermetically connected with the air inlet device through a sealing ring, and the inlet end is fixedly connected with a flange on the air inlet device through a flange plate.
As a further improved technical scheme of the patent, the reducer pipe is provided with a plurality of reducer pipes which are connected in series and spliced with each other, and an inlet sleeve is arranged at an inlet of each reducer pipe; the inlet of the nozzle is provided with an inlet sleeve, and the inlet sleeve of the nozzle is inserted with the outlet of a reducer pipe.
As a further improved technical scheme, the water inlet nozzle adopts a wide-angle nozzle.
To sum up, this patent has following beneficial effect:
this patent makes material and water in spray gun return bend department preliminary mixing, further makes powder and water grain mix through air inlet unit again, improves the material flow rate through the toper pipe, gets into from the mixing of continuous reducing pipe, can select the installation quantity from the continuous reducing pipe by the exit material mixing degree by oneself. The thin spraying material is uniformly mixed with water before leaving the nozzle, the inner wall of the spraying pipe is not bonded, the sprayed material meets various indexes, and the thin spraying material is efficiently bonded on the inner wall of the roadway.
The tapered pipe and the reducer pipe are made of nylon materials, the weight of the spray gun is reduced while the structural strength is met, and the operation and the maintenance of workers are facilitated.
The feeding direction of the spray gun is opposite to the water inlet direction, and the spray gun and the water inlet direction are positioned on the same straight line, so that the thin sprayed powder is fully mixed with water.
The air inlet device adopts a clamping groove air inlet mode, air enters the semi-closed air ring arranged on the inner wall of the air inlet device from the auxiliary air inlet block and is finally discharged from the semi-cylindrical air outlet groove, and air turbulence flowing at a high speed is formed on the inner wall of the spray gun, so that the materials are prevented from being bonded to the inner wall of the spray gun while being uniformly mixed.
The sealing ring is arranged between the inlet end of the conical pipe of the spray gun and the air inlet device, the flange plate is connected with the flange of the air inlet device, the inlet of the conical pipe is pressed to complete airtight assembly, the conical pipe and the air inlet device form an airtight annular air chamber, a plurality of semi-cylindrical air outlet grooves in the air inlet device simultaneously and stably exhaust air, and therefore materials in the conical pipe are prevented from being bonded with the pipe wall, the inner diameter of the inlet of the conical pipe is 56mm, the inner diameter of the outlet of the conical pipe is 44mm, the flow rate during discharging is indirectly improved.
The front end of the nozzle is connected with a plurality of self-connecting reducing pipes in series, and a multi-reducing structure is used, so that disordered flow of water particles and powder particles is increased, and the aim of fully mixing the thin spraying material is fulfilled. Meanwhile, the combination number of the self-reducing pipes can be increased or reduced according to the mixing effect of the thin spraying materials, the requirements of different thin spraying materials are met, and the optimal spraying effect is achieved.
The size of the nozzle interface and the size of the reducer pipe interface are the same, so that the nozzle can be freely combined, the requirements of more working conditions are met, and the maintenance is convenient.
Drawings
FIG. 1 is a front view of a reducing lance.
Fig. 2 is an isometric view of an intake device.
Fig. 3 is a sectional view of the air intake device.
Fig. 4 is a partially enlarged cross-sectional view of the air intake device.
In the figure, a bent pipe 1, an air inlet device 2, a sealing ring 3, a material inlet 4, an auxiliary air inlet block 5, a first conical pipe 6, a second conical pipe 7, a third conical pipe 8, a first conical pipe sleeve 9, a second conical pipe sleeve 10, an inlet sleeve 11, a wide-angle nozzle 12, a semi-cylindrical air outlet groove 13, an inlet pipe joint 14, a flange plate 15, a semi-closed air ring 16, an inner bayonet 17, a reducer pipe 18, a nozzle 19, an outer bayonet 20 and a closed end bottom surface 21.
Detailed Description
Embodiments of this patent are further described below with reference to figures 1-4:
a variable diameter spray gun for quickly connecting powder to spray and mix, which is shown in figure 1, comprises a feeding device, a water inlet device, an air inlet device 2, a conical pipe, a variable diameter pipe 18 and a nozzle 19.
The feeding device comprises an elbow pipe 1, and a material inlet 4 is welded at the inlet of the elbow pipe 1.
The water inlet device comprises a water inlet pipe joint 14 and a wide-angle nozzle 12 (shown in figure 3), a water inlet pipeline is welded on the elbow pipe 1, the water inlet pipe joint 14 is connected with the water inlet pipeline, and the bottom of the water inlet pipe joint 14 is connected with the wide-angle nozzle 12 (shown in figure 3). The central line of the water inlet pipeline and the central line of the material inlet 4 are positioned on the same straight line, and the water inlet direction of the water inlet pipeline is opposite to the feeding direction of the material inlet 4, so that the thin powder spraying material is fully mixed with water. The outlet of the elbow 1 is connected with the inlet of a material channel in the air inlet device 2, the outlet of the material channel in the air inlet device 2 is connected with the inlet of a conical pipe, the outlet of the conical pipe is connected with the inlet of a reducer pipe 18, and the outlet of the reducer pipe 18 is connected with the inlet of a nozzle 19.
In this embodiment, the bent pipe 1 is a 45-degree bent pipe. The feed pipe adopts the material import 4 of threaded connection 45 degrees return bends.
In this embodiment, the return bend 1 adopts welding mode and water inlet pipe connection, and water inlet pipe joint 14 pegs graft with the water inlet pipe, and return bend 1 adopts welding mode and material inlet 4 to be connected.
In this embodiment, referring to fig. 2, 3 and 4, an auxiliary air inlet block 5 is disposed on an outer surface of the air inlet device 2, and a semi-closed air ring 16 is disposed on a side surface of an outlet end of the material passage in the air inlet device 2, and the semi-closed air ring is surrounded by an inner bayonet 17, an outer bayonet 20 and a bottom surface 21 of the closed end. The outer peripheral surface of an inner bayonet 17 of the semi-closed air ring 16 is uniformly provided with 9 semi-cylindrical air outlet grooves 13 with the radius of 3mm, the auxiliary air inlet block 5 is provided with an external air connecting passage communicated with the semi-closed air ring 16, and the external air connecting passage is used for being communicated with an external air source. The gas inlet device 2 adopts a clamping groove gas inlet mode, gas enters the semi-closed gas ring 16 from the auxiliary gas inlet block 5, is discharged from the semi-cylindrical gas outlet groove 13, and enters the conical pipe I6. Through adopting above-mentioned scheme, form the air turbulence of high-speed flow at the spray gun inner wall for when the material homogeneous mixing, prevent that the material from bonding to the spray gun inner wall.
In this embodiment, the outlet of the elbow 1 is fixedly connected to the air inlet device 2 by welding.
In this embodiment, there are three tapered tubes, which have the same structure and are respectively a first tapered tube 6, a second tapered tube 7 and a third tapered tube 8 as shown in fig. 1; the inlet of the first conical pipe 6 is connected with the air inlet device 2; the outlet of the first conical pipe 6 is connected with the inlet of the second conical pipe 7 through a first conical pipe sleeve 9, and the first conical pipe sleeve 9, the first conical pipe 6 and the second conical pipe 7 are connected in an interference fit insertion mode; the outlet of the second conical pipe 7 is connected with the inlet of the third conical pipe 8 through a second conical pipe sleeve 10, and the second conical pipe sleeve 10, the second conical pipe 7 and the third conical pipe 8 are connected in an interference fit insertion mode; the outlet of the third conical pipe 8 is inserted into the inlet sleeve 11 at one end of the reducer pipe 18 in an interference fit manner.
In this embodiment, the reducing spray gun still includes flange plate 15, refer to fig. 3 and 4, the entrance point of conical duct one 6 stretches into the open end of semi-closed gas ring 16, and conical duct one 6 entrance point periphery passes through sealing washer 3 (rubber circle) sealing connection with the interior global of outer bayonet on the air inlet unit 2, and interior bayonet 17 outer axial surface contacts with the interior circumference of the entrance point of conical duct, and conical duct one 6 entrance point periphery has the great crown plate of diameter, and the bolt passes flange plate 15, crown plate, the flange of 2 periphery both sides of air inlet unit, to conical duct one 6 and air inlet unit 2 fixed connection for the import of conical duct one 6 and air inlet unit 2 accomplish airtight assembly. By adopting the technical scheme, the first conical pipe 6 and the air inlet device 2 form a closed annular air chamber, meanwhile, the annular plate on the periphery of the inlet end of the first conical pipe 6 is in contact with the end face of the outer bayonet on the air inlet device 2, the phenomenon that the inlet end of the first conical pipe 6 extends into the semi-closed air ring 16 for too long is prevented, and the length of the inlet end of the first conical pipe 6 extending into the semi-closed air ring 16 is determined according to the principle that the semi-cylindrical air outlet groove 13 is not obstructed from being communicated with the annular air chamber. After gas generated by a gas source enters the annular gas chamber, the gas is stably exhausted through the 9 semi-cylindrical gas outlet grooves 13 and enters the first conical pipe 6, so that materials in the conical pipes are prevented from being bonded with the pipe wall, the inner diameter of inlets of all the conical pipes is 56mm, the inner diameter of outlets of all the conical pipes is 44mm, the flow rate during discharging is indirectly improved, and the flow rate of mixed materials is improved.
In this embodiment, the reducer 18 has a plurality of reducer 18, and the plurality of reducer 18 are connected in series and inserted with each other, and the specific number is not limited, and the number of reducer 18 can be automatically added or reduced according to the mixing condition of the powder particles of the outlet material. Referring to fig. 1, the inlet of each reducer 18 is provided with an inlet sleeve 11. The inner diameters of the inlet and the outlet of the reducer pipe 18 are both 44mm, and the middle section is narrowed to 35 mm. The reducer pipe 18 adopts a sleeve interference fit connection mode, namely an inlet sleeve 11 is arranged at the inlet of the reducer pipe 18, and the inlet sleeve 11 of the reducer pipe 18 is inserted with the outlet of the conical pipe III 8 in an interference fit manner or is inserted with the outlet of the other reducer pipe 18 in an interference fit manner. The inlet sleeve on reducer 18 has an inner diameter of 53mm and an outer diameter of 56 mm. By adopting the technical scheme, the multiple reducing structures are used, the disordered flow of water particles and powder particles is increased, and the aim of fully mixing the thin spraying material is fulfilled. Meanwhile, the number of the combination of the reducer pipes 18 can be increased or reduced according to the mixing effect of the thin spraying materials, so that the requirements of different thin spraying materials are met, and the optimal spraying effect is achieved.
The nozzle 19 is connected in a manner of sleeve interference fit, that is, the inlet of the nozzle 19 is also provided with an inlet sleeve 11, and the inlet sleeve 11 of the nozzle 19 is inserted into the outlet of a reducer 18 in an interference fit manner. The inlet sleeve 11 on the nozzle 19 has an inner diameter of 53mm and the inlet sleeve 11 has an outer diameter of 56 mm. The inner diameter of the inlet of the nozzle 19 is 44mm, and the inner diameter of the outlet of the nozzle 19 is 35 mm. By adopting the technical scheme, the nozzle 19 and the reducer pipe 18 have the same interface size, can realize free combination, meet the requirements of more working conditions and are convenient to maintain.
In this embodiment, the feeding device, the water inlet device and the air inlet device 2 are operated simultaneously when the thin spraying operation is performed. The nozzle, the reducer pipe and the conical pipe can realize quick insertion.
The thin dry powder spraying raw material enters the spray gun from the material inlet 4, meanwhile, the water is introduced into the water inlet pipe, the raw material and water particles are mixed at the 45-degree elbow 1 once, and the central line of the wide-angle nozzle 12 is in the same line with the central line of the inlet of the elbow 1 by adopting a reverse water adding method, so that the mixing effect is improved. The mixed materials pass through the air inlet device 2, a semi-closed air ring 16 is arranged in the air inlet device 2, 9 semi-cylindrical air outlet grooves 13 are arranged on an inner bayonet 17 of the semi-closed air ring 16 to spray high-speed air flow to the periphery of the pipe wall, so that the materials are further mixed, and meanwhile, the high-speed air flow prevents the materials from being bonded with the inner wall of the pipe. The mixed materials are mixed by the tapered pipe to improve the flow speed, and enter the self-connected reducer 18 to finish the third mixing, and the reducer 18 can be combined or used independently and can be automatically combined and adjusted according to the field material mixing condition. And finally spraying the stirred material by a nozzle. The spray tube of spray gun (including conical tube two 7, conical tube three 8, conical tube sleeve one 9, conical tube sleeve two 10, entry sleeve pipe 11, reducing pipe 18) adopts the nylon material, effectively reduces overall quality, and difficult rust convenient clearance. And a sealing ring 3 is additionally arranged between the air inlet device 2 and the conical pipe and is tightly pressed and fixed by a flange plate 15, so that air leakage loss is prevented.
The scope of the patent includes, but is not limited to, the above embodiments, and the scope of the patent is defined by the appended claims, and any substitutions, changes, and modifications that can be easily made by one skilled in the art are all within the scope of the patent.
Claims (10)
1. The utility model provides a quick connect powder sprays mixes and uses reducing spray gun which characterized in that: including feed arrangement, water installations, air inlet unit, conical duct, reducing pipe and nozzle, feed arrangement includes the return bend, the entry linkage of return bend has the material import, water installations includes water inlet pipe joint and water inlet nozzle, be connected with the water inlet pipeline on the return bend, water inlet pipe joint and water inlet pipe connection, water inlet pipe joint's bottom is connected with water inlet nozzle, water inlet pipe pipeline's central line and material import's central line are located same straight line, and water inlet pipe's the direction of intaking opposite with the feeding direction of material import, the export and the air inlet unit of return bend are connected, the access connection of air inlet unit and conical duct, the export of conical duct and reducing pipe's entry connection, the export of reducing pipe and the entry connection of nozzle.
2. The variable diameter spray gun for rapidly connecting powder injection mixing according to claim 1, wherein: the bent pipe is a 45-degree bent pipe.
3. The variable diameter spray gun for rapidly connecting powder injection mixing according to claim 2, wherein: the elbow adopts welding mode and water inlet pipe connection, the elbow adopts welding mode and material access connection.
4. The variable diameter spray gun for rapidly connecting powder injection mixing according to claim 1, wherein: a semi-closed air ring is arranged on one side of the air inlet device connected with the conical pipe, the semi-closed air ring is formed by an inner bayonet, an outer bayonet and a closed end bottom surface in a surrounding mode, and the semi-closed air ring is communicated with an external air source; a plurality of air outlet grooves are uniformly distributed on the outer side surface of the inner bayonet; the inlet end of the conical tube extends into the open end of the semi-closed gas ring, the periphery of the inlet end of the conical tube is hermetically connected with the inner side surface of the outer bayonet, the outer side surface of the inner bayonet is in contact with the inner periphery of the inlet end of the conical tube, and gas generated by a gas source enters the conical tube through the gas outlet groove after entering the semi-closed gas ring.
5. The variable diameter spray gun for rapidly connecting powder injection mixing according to claim 4, wherein: the air outlet grooves are semi-cylindrical air outlet grooves, and the radiuses of the air outlet grooves are 3 mm.
6. The variable diameter spray gun for rapidly connecting powder injection mixing according to claim 1, wherein: the outer surface of the air inlet device is provided with an auxiliary air inlet block, an externally connected air passage communicated with the semi-closed air ring is arranged in the auxiliary air inlet block, and an air source is connected with the externally connected air passage.
7. The variable diameter spray gun for rapidly connecting powder injection mixing according to claim 1, wherein: the three conical tubes are of the same structure and are respectively a first conical tube, a second conical tube and a third conical tube; the inlet of the first conical pipe is connected with an air inlet device; the outlet of the first conical pipe is connected with the inlet of the second conical pipe through a first conical pipe sleeve, and the first conical pipe sleeve is connected with the first conical pipe and the second conical pipe in an inserting manner; the outlet of the second conical pipe and the inlet of the third conical pipe are connected through a second conical pipe sleeve, and the second conical pipe sleeve is connected with the second conical pipe and the third conical pipe in an inserting manner; and an outlet of the conical pipe III is inserted into one end of the reducer pipe.
8. The variable diameter spray gun for rapidly connecting powder injection mixing according to claim 7, wherein: the inlet end of the first conical pipe is hermetically connected with the air inlet device through a sealing ring, and the inlet end is fixedly connected with a flange on the air inlet device through a flange plate.
9. The variable diameter spray gun for rapidly connecting powder injection mixing according to claim 1, wherein: the reducer pipe is provided with a plurality of reducer pipes which are connected in series and are spliced, and an inlet sleeve is arranged at the inlet of each reducer pipe; the inlet of the nozzle is provided with an inlet sleeve, and the inlet sleeve of the nozzle is inserted with the outlet of a reducer pipe.
10. The variable diameter spray gun for rapidly connecting powder injection mixing according to claim 1, wherein: the water inlet nozzle adopts a wide-angle nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725109.7A CN111871635B (en) | 2020-07-24 | 2020-07-24 | Quick-connection variable-diameter spray gun for powder injection mixing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725109.7A CN111871635B (en) | 2020-07-24 | 2020-07-24 | Quick-connection variable-diameter spray gun for powder injection mixing |
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| CN111871635A true CN111871635A (en) | 2020-11-03 |
| CN111871635B CN111871635B (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010725109.7A Active CN111871635B (en) | 2020-07-24 | 2020-07-24 | Quick-connection variable-diameter spray gun for powder injection mixing |
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| DE19813765A1 (en) * | 1997-03-28 | 1998-10-22 | Ishikawajima Harima Heavy Ind | Method of spraying concrete |
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| CN103147767A (en) * | 2013-01-27 | 2013-06-12 | 泰安华煤国宏工矿科技有限公司 | Monolithic concrete guniting device |
| CN103769323A (en) * | 2014-01-24 | 2014-05-07 | 江西省交通工程集团公司 | Multi-mixing cavity type spray nozzle of dry type spraying machine |
| KR20160009432A (en) * | 2014-07-16 | 2016-01-26 | 현대건설주식회사 | Pipe for reducing dust of shotcrete, constructing system and constructing method using thereof |
| CN205652840U (en) * | 2016-04-11 | 2016-10-19 | 广东天泽生态环境有限公司 | Defeated material elbow device of jet plane |
| CN106285720A (en) * | 2016-08-16 | 2017-01-04 | 中国矿业大学 | A kind of feeding device of underground coal mine distance spraying system |
| CN106498948A (en) * | 2016-11-11 | 2017-03-15 | 平顶山鸿顺源工贸有限公司 | A kind of wind division type spray head |
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2020
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19813765A1 (en) * | 1997-03-28 | 1998-10-22 | Ishikawajima Harima Heavy Ind | Method of spraying concrete |
| CN102022125A (en) * | 2009-09-12 | 2011-04-20 | 周德祥 | Wet spraying machine for concrete dry materials |
| CN101745490A (en) * | 2009-12-10 | 2010-06-23 | 衡阳华菱连轧管有限公司 | Air ring of blowing and spraying type steel pipe painting machine |
| CN201848338U (en) * | 2010-05-26 | 2011-06-01 | 郑州知信机电科技开发有限公司 | Spray nozzle device, spray nozzle and spray nozzle holder thereof for damp shotcrete machine |
| CN202823690U (en) * | 2012-09-13 | 2013-03-27 | 济宁矿业集团有限公司安居煤矿 | Pneumatic spiral mixing injection machine |
| CN103147767A (en) * | 2013-01-27 | 2013-06-12 | 泰安华煤国宏工矿科技有限公司 | Monolithic concrete guniting device |
| CN103769323A (en) * | 2014-01-24 | 2014-05-07 | 江西省交通工程集团公司 | Multi-mixing cavity type spray nozzle of dry type spraying machine |
| KR20160009432A (en) * | 2014-07-16 | 2016-01-26 | 현대건설주식회사 | Pipe for reducing dust of shotcrete, constructing system and constructing method using thereof |
| CN205652840U (en) * | 2016-04-11 | 2016-10-19 | 广东天泽生态环境有限公司 | Defeated material elbow device of jet plane |
| CN106285720A (en) * | 2016-08-16 | 2017-01-04 | 中国矿业大学 | A kind of feeding device of underground coal mine distance spraying system |
| CN106498948A (en) * | 2016-11-11 | 2017-03-15 | 平顶山鸿顺源工贸有限公司 | A kind of wind division type spray head |
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| CN111871635B (en) | 2021-11-16 |
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