CN110748356A - Wind-driven automatic proportioning concrete sprayer - Google Patents
Wind-driven automatic proportioning concrete sprayer Download PDFInfo
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- CN110748356A CN110748356A CN201910923002.0A CN201910923002A CN110748356A CN 110748356 A CN110748356 A CN 110748356A CN 201910923002 A CN201910923002 A CN 201910923002A CN 110748356 A CN110748356 A CN 110748356A
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- 239000004567 concrete Substances 0.000 title claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000004568 cement Substances 0.000 claims abstract description 54
- 238000002156 mixing Methods 0.000 claims abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 239000004576 sand Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000004575 stone Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 239000011440 grout Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003823 mortar mixing Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a wind-driven automatic proportioning concrete sprayer which is characterized by comprising a walking frame and a horizontal pipe which is arranged on the walking frame and is used for proportioning and conveying concrete materials; a cement paste proportional conveying device, a stone proportional conveying device and a sand proportional conveying device are arranged on the pipe body of the horizontal pipe; the cement paste proportional conveying device is characterized in that a circle of surrounding water pipe, an accelerator proportional conveying device and a cement proportional conveying device are arranged on a cement paste mixing barrel; also includes an integrated proportional distribution valve; when spraying the cement, the cement and the accelerator are fully mixed with water after meeting water spraying in a cement slurry mixing barrel to form cement slurry, the cement slurry is conveyed to the horizontal pipe, flows forwards at high speed under the action of compressed air, is mixed with the sand after meeting stones and the sand, and is output under pressure through a conical pipe at the front end of the horizontal pipe.
Description
Technical Field
The invention relates to a concrete sprayer for supporting mine roadways and traffic tunnels.
Background
The concrete sprayer is a mechanical device which utilizes compressed air to make concrete form suspended air flow according to a certain proportion and spray the air flow onto the surface of the concrete to be coated to form a compact concrete layer, so that the surface of a building is reinforced or a new structure is formed. The concrete is widely adopted by many countries in underground and ground concrete engineering in the industries of construction, municipal administration, railway, mine and the like, and shows better technical and economic benefits. The concrete mixture can be divided into dry type, wet type and semi-wet type according to different water adding methods. The wet type of the concrete mixture entering the spraying machine is added with water, so the dust content in the spraying is low, the rebound quantity is also reduced, and the spraying mode is an ideal spraying mode. The technology related to the present application is a wet concrete sprayer. According to the structural form of the jet machine, the jet machine can be divided into a cylinder tank type jet machine, a spiral jet machine and a rotor jet machine. In any form, after the stones, the sand, the cement, the accelerator and the water are manually mixed, the mixture is stirred by a stirring device and then conveyed to a concrete discharge port, and then the pressure spraying to the concrete is completed by high-pressure compressed air. Need artifical batching, electric power or hydraulic equipment stirring and wind power transmission equipment to carry, supporting power equipment is many, and the structure is complicated, with high costs, receives artifical influence can not guarantee the ratio quality of concrete raw materials, causes the raw materials extravagant and influences the tunnel and strut the quality easily. Some devices are assembled into a whole to form a triple machine integrating storage, stirring and injection, so that the mechanization degree of the whole concrete injection construction process is improved, and the triple machine is still complex in structure and heavy in body.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an integrated injection device which is driven by wind power and realizes automatic proportioning, automatic feeding and pressurized injection of concrete components.
The technical scheme is that the wind-driven automatic proportioning concrete sprayer is characterized by comprising a walking frame and a horizontal pipe which is arranged on the walking frame and used for proportioning and conveying concrete materials; the front end of the horizontal pipe is provided with a taper pipe, the tail part of the horizontal pipe is provided with a compressed air pipeline interface, a proportional conveying device communicated with the pipe body is arranged on the pipe body, and the proportional conveying device sequentially comprises a cement paste proportional conveying device, a stone proportional conveying device and a sand proportional conveying device from back to front; the cement paste proportional conveying device comprises a cement paste mixing barrel, the bottom of the cement paste mixing barrel is communicated with a horizontal pipe, a circle of surrounding water pipes are arranged on the cement paste mixing barrel, a plurality of water spray nozzles for spraying water into the barrel are arranged on the surrounding water pipes, and an accelerator proportional conveying device and a cement proportional conveying device are arranged at the top of the cement paste mixing barrel.
The accelerator proportional conveying device, the cement proportional conveying device, the stone proportional conveying device and the sand proportional conveying device have the same structure; the specific structure of the materials comprises a charging bucket suitable for proportioning specific supply, wherein a perforated plate is arranged in the charging bucket, a discharging opening meeting the material flow is formed in the bottom of the charging bucket, a section of straight pipe is connected below the discharging opening, the inner wall of the straight pipe is coated with a wear-resistant layer, a spiral conveying blade is arranged in the straight pipe, the spiral conveying blade and the inner wall of the straight pipe have certain sealing degree, a pneumatic motor is arranged on the perforated plate and is connected with the spiral conveying blade through a shaft, and the pneumatic motor drives the spiral conveying blade to rotate according to a set rotating speed so as to realize quantitative conveying of materials in the charging bucket; for the flowing of the materials, the charging bucket is in an inverted cone shape.
The device also comprises an integrated proportional distribution valve (hereinafter referred to as a distribution valve); the distribution valve is a valve component for controlling and distributing compressed air pressure, flow and water flow, the valve component is provided with a compressed air inlet and a compressed water inlet, a proportional pore channel formed according to proportional fluid dynamics design is arranged in the valve component and comprises a concrete conveying and air feeding channel, a water channel and four motor control air channels, the concrete conveying and air feeding channel is connected with a compressed air pipeline interface at the tail part of the horizontal pipe, the four motor control air channels are respectively connected with pneumatic motors of proportional conveying devices correspondingly controlled by the concrete conveying and air channel through air pipelines, a compressed air power source pressurizes the horizontal pipe according to a proportional relation, and drives the pneumatic motors to respectively operate according to set rotating speeds so as to realize proportional conveying of concrete raw materials; one water channel is connected with the surrounding water pipe through a water pipe to realize the water delivery.
The water channel is designed according to the flow of the maximum water-cement ratio of concrete, and a flow valve and a flow meter are arranged on the pressure water inlet in order to adjust the water-cement ratio at any time according to the guniting condition.
The working method of the concrete sprayer comprises the following steps:
during guniting, a compressed air source and a pressure water source are respectively connected with a compressed air inlet and a pressure water inlet of a distribution valve, and openings of concrete raw material bags are downwards arranged on porous plates of respective proportional conveying devices, so that the raw materials flow into a charging bucket; opening a flow valve on a water inlet to enable the flow valve to meet the flow of the water-cement ratio of the concrete, and spraying pressure water flow into the cement paste mixing barrel through a surrounding water pipe; then starting the distribution valve, sending compressed air to the horizontal pipe, and simultaneously starting each proportional conveying device to work; the cement and the accelerator are fully mixed with water after meeting water spray in a cement slurry mixing barrel to form cement slurry, the cement slurry is conveyed to the horizontal pipe, flows forwards at high speed under the action of compressed air, is mixed with stones and sand, and is output under pressure through a conical pipe at the front end of the horizontal pipe.
In the guniting process, when the water-cement ratio of the concrete needs to be adjusted, the flow valve is adjusted manually.
The positive effects of this application are:
1. the integrated proportional distributing valve is designed in proportion according to the requirement of concrete proportioning, realizes the proportional drive control and the water quantity control of the pneumatic motor, and ensures the rationality of the concrete raw material proportioning.
2. The pneumatic motor automatically realizes the proportioning of the raw materials in the operation process, prevents the raw material proportioning imbalance caused by misoperation of equipment, and improves the supporting quality.
3. The delivery power of the compressed air power is adjustable, and the automatic adjustment of the injection power and the raw material ratio is realized.
4, the raw material bags are respectively used for feeding, so that flying dust is prevented, and the environment is protected.
In a word, the invention adopts the compressed air power source to control the automatic proportioning and conveying of the concrete raw materials, realizes the spraying of the wet concrete, has simple structure and low cost, is not influenced by manpower, and improves the supporting quality and the working efficiency.
Drawings
FIG. 1 is a schematic front view of the embodiment.
Illustration of the drawings: a-cement paste proportional conveying device; b-sand proportional conveying device; c-a pebble proportional conveying device; 1-moving the frame; 2-horizontal tube; 3-a conical pipe; 4-compressed air pipeline interface; 5-cement slurry mixing barrel; 6-surrounding water pipes; 7-cement proportional conveying device; 8-accelerator proportional delivery device; 9-a charging basket; 10-straight pipe; 11-a screw conveying blade; 12-perforated plate 13-pneumatic motor; 14-axis; 15-gas line; 16-a dispensing valve; 17-a flow meter; 18-flow valve; 19-a pressurized water inlet; 20-compressed air inlet; 21-water line.
Detailed Description
As shown in fig. 1, a wind-driven automatic proportioning concrete sprayer comprises a walking frame 1 and a horizontal pipe 2 which is arranged on the walking frame and used for proportioning and conveying concrete materials; the front end of the horizontal pipe 2 is provided with a taper pipe 3, the tail part of the horizontal pipe is provided with a compressed air pipeline interface 4, and a proportional conveying device communicated with the pipe body is arranged on the pipe body; the proportional conveying device comprises a cement paste proportional conveying device A, a stone proportional conveying device C and a sand proportional conveying device B in sequence from back to front; wherein grout proportion conveyor A's structure is, including a grout blending tank 5, grout blending tank 5's bottom and horizontal pipe 2 intercommunication are equipped with the round on grout blending tank 5 and encircle water pipe 6, encircle and be equipped with a plurality of water sprayings to the bucket internal water spray on the water pipe 6, are equipped with accelerator proportion conveyor 8 and cement proportion conveyor 7 at grout blending tank 5's top.
The accelerator proportion conveying device 8, the cement proportion conveying device 7, the stone proportion conveying device C and the sand proportion conveying device B have the same structure; the specific structure of the materials comprises a charging bucket 9 suitable for proportioning specific supply, a perforated plate 12 is arranged in the charging bucket, a feed opening meeting the material flow is formed in the bottom of the charging bucket 9, a section of straight pipe 10 is connected below the feed opening, a wear-resistant layer is coated on the inner wall of the straight pipe 10, a spiral conveying blade 11 is arranged in the straight pipe 10, the spiral conveying blade 11 and the inner wall of the straight pipe have certain sealing degree, a pneumatic motor 13 is installed on the perforated plate 12, the pneumatic motor 13 is connected with the spiral conveying blade 11 through a shaft 14, and the pneumatic motor 13 drives the spiral conveying blade 11 to rotate according to certain rotating speed so as to realize quantitative conveying of materials in the charging bucket; the charging basket 9 is formed in an inverted cone shape for the purpose of material flow.
An integrated proportional distributing valve 16 (hereinafter referred to as distributing valve 16); the distribution valve 16 is a valve component for controlling and distributing compressed air pressure, flow and water flow, the valve component is provided with a compressed air inlet 20 and a compressed water inlet 19, a proportional pore channel designed according to proportional fluid dynamics is arranged in the valve component and comprises a concrete conveying and air supplying channel, a water channel and four motor control air channels, the concrete conveying and air supplying channel is connected with a compressed air pipeline interface 4 at the tail part of the horizontal pipe, the four motor control air channels are respectively connected with pneumatic motors 13 of proportional conveying devices correspondingly controlled by the air pipeline 15, and a compressed air power source provides compressed air power for the horizontal pipe 2 according to a proportional relation and drives the pneumatic motors 13 to respectively operate according to a set rotating speed so as to realize the proportional conveying of concrete raw materials; the water channel is connected with the surrounding water pipe 6 through a water pipe 21, so that the proportional delivery of water quantity is realized.
The device also comprises a flow valve 18 and a flow meter 17 which are arranged on the pressure water inlet.
The concrete sprayer of the invention has the working method that:
during guniting, a compressed air source and a pressure water source are respectively connected with a compressed air inlet 20 and a flow valve 18 on a pressure water inlet of a distribution valve, openings of concrete raw material bags are downwards placed on porous plates 12 of respective proportional conveying devices, and the concrete raw material bags flow into a charging bucket 9; opening a flow valve 18 on a water inlet to enable the flow valve to meet the flow of the concrete water-cement ratio, and spraying pressure water flow into the cement paste mixing barrel 5 through a surrounding water pipe 6; then the distributing valve 16 is started to send compressed air to the horizontal pipe 2, and simultaneously each proportional conveying device starts to work; wherein, cement and accelerator meet water spray in the cement mortar mixing barrel 5 and then fully mix with water, become cement mortar and convey to the horizontal pipe 2, flow forward at high speed under the effect of compressed air, meet stones and sand and then mix together with it, output under pressure through the taper pipe 3 at the front end of the horizontal pipe.
According to the spraying condition, when the water cement ratio of the concrete needs to be adjusted, the flow valve 18 can be adjusted manually, and the required water flow is observed through the flow meter 17.
Claims (5)
1. A wind-driven automatic proportioning concrete sprayer is characterized by comprising a walking frame and a horizontal pipe which is arranged on the walking frame and used for proportioning and conveying concrete materials; the front end of the horizontal pipe is provided with a taper pipe, the tail part of the horizontal pipe is provided with a compressed air pipeline interface, and a cement paste proportional conveying device, a stone proportional conveying device and a sand proportional conveying device which are communicated with the pipe body are sequentially arranged on the pipe body from back to front; the cement slurry proportional conveying device comprises a cement slurry mixing barrel, the bottom of the cement slurry mixing barrel is communicated with a horizontal pipe, a circle of surrounding water pipe is arranged on the cement slurry mixing barrel, a plurality of water spray nozzles for spraying water into the barrel are arranged on the surrounding water pipe, and an accelerator proportional conveying device and a cement proportional conveying device are arranged at the top of the cement slurry mixing barrel; the concrete structure of the accelerator proportional conveying device, the cement proportional conveying device, the stone proportional conveying device and the sand proportional conveying device is the same, and the concrete structure comprises a charging basket suitable for proportioning proportional supply, a perforated plate is arranged in the charging basket, a discharging opening meeting material flow is arranged at the bottom of the charging basket, a section of straight pipe is connected below the discharging opening, a spiral conveying blade is arranged in the straight pipe, the spiral conveying blade and the inner wall of the straight pipe have certain sealing degree, a pneumatic motor is arranged on the perforated plate and connected with the spiral conveying blade through a shaft, and the pneumatic motor drives the spiral conveying blade to rotate to convey materials;
also includes a dispensing valve; the distribution valve is a valve component for controlling and distributing compressed air pressure, flow and water flow, the valve component is provided with a compressed air inlet and a compressed water inlet, a proportional pore channel formed according to proportional fluid dynamics design is arranged in the valve component and comprises a concrete conveying and air feeding channel, a water channel and four motor control air channels, the concrete conveying and air feeding channel is connected with a compressed air pipeline interface at the tail part of the horizontal pipe, the four motor control air channels are respectively connected with pneumatic motors of proportional conveying devices correspondingly controlled by the concrete conveying and air channel through air pipelines, a compressed air power source pressurizes the horizontal pipe according to a proportional relation, and drives the pneumatic motors to respectively operate according to set rotating speeds so as to realize proportional conveying of concrete raw materials; the water channel is connected with the surrounding water pipe through a water pipe, so that the water quantity is conveyed.
2. The concrete sprayer according to claim 1, wherein the water passage is designed according to the maximum water-cement ratio of concrete, and a water control valve and a flow meter are arranged on the water flow passage.
3. The concrete sprayer according to claim 1, wherein the barrels of the accelerator proportional delivery unit, the cement proportional delivery unit, the gravel proportional delivery unit and the sand proportional delivery unit are reverse tapered.
4. The concrete sprayer according to claim 1, wherein the inner wall of the straight pipe at the bottom of the charging basket is coated with a wear resistant layer.
5. A method of operating a concrete spraying machine as claimed in claim 2, characterized in that the spraying is carried out
During slurry preparation, a compressed air source and a pressure water source are respectively connected with a compressed air inlet and a pressure water inlet of a distribution valve, openings of the concrete raw material bags are downwards placed on porous plates of respective proportional conveying devices, and flow into a charging bucket; opening a flow valve on a water inlet to enable the flow valve to meet the flow of the water-cement ratio of the concrete, and spraying pressure water flow into the cement paste mixing barrel through a surrounding water pipe; then starting the distribution valve, sending compressed air to the horizontal pipe, and simultaneously starting each proportional conveying device to work; wherein, the cement and the accelerator are fully mixed with water after meeting water spray in a cement slurry mixing barrel to form cement slurry, the cement slurry is conveyed to a horizontal pipe, flows forwards at high speed under the action of compressed air, is mixed with stones and sand, and is output at high pressure through a taper pipe at the front end of the horizontal pipe; when the water-cement ratio of the concrete needs to be adjusted in the guniting process, the flow valve is adjusted manually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910923002.0A CN110748356A (en) | 2019-09-27 | 2019-09-27 | Wind-driven automatic proportioning concrete sprayer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910923002.0A CN110748356A (en) | 2019-09-27 | 2019-09-27 | Wind-driven automatic proportioning concrete sprayer |
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| CN110748356A true CN110748356A (en) | 2020-02-04 |
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| CN201910923002.0A Pending CN110748356A (en) | 2019-09-27 | 2019-09-27 | Wind-driven automatic proportioning concrete sprayer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2214479Y (en) * | 1994-01-14 | 1995-12-06 | 汤殿荣 | Thrust wet concrete injector |
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| CN107225685A (en) * | 2017-07-31 | 2017-10-03 | 合肥恩腾电子科技有限公司 | A kind of construction site travelling mixer |
| CN206707728U (en) * | 2017-03-17 | 2017-12-05 | 山东聚亨源环保科技有限公司 | A kind of mining automatic charging stirs the dustless concrete tidal injection unit of material |
| CN206765079U (en) * | 2017-04-28 | 2017-12-19 | 罗方武 | A kind of subway engineering construction concrete mixer |
| CN206899509U (en) * | 2017-07-19 | 2018-01-19 | 邱卿芳 | A kind of construction site multifunctional efficient mixer |
| CN206982979U (en) * | 2017-07-11 | 2018-02-09 | 李雄伟 | A kind of novel building site construction concrete central mix plant |
| CN108150195A (en) * | 2017-12-28 | 2018-06-12 | 山东科技大学 | Wind drive automatic mixing concrete spraying device |
| CN108487919A (en) * | 2018-03-14 | 2018-09-04 | 山东科技大学 | The annular automatic mixing Wet-type concrete pulp shooting machine of full wind driving |
| CN109695460A (en) * | 2019-03-14 | 2019-04-30 | 中铁十局集团西北工程有限公司 | The injection method of concrete in a kind of constructing tunnel |
| CN109899091A (en) * | 2019-03-27 | 2019-06-18 | 中南大学 | A kind of mixing station material mixture ratio Reverse Turning Control method required based on gunite concrete work on the spot |
-
2019
- 2019-09-27 CN CN201910923002.0A patent/CN110748356A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2214479Y (en) * | 1994-01-14 | 1995-12-06 | 汤殿荣 | Thrust wet concrete injector |
| CN1652908A (en) * | 2001-06-20 | 2005-08-10 | 株式会社大林组 | Weighing equipment for concrete material |
| CN202706563U (en) * | 2012-05-15 | 2013-01-30 | 安阳市圆通建筑机械有限公司 | Universal concrete truck |
| CN206707728U (en) * | 2017-03-17 | 2017-12-05 | 山东聚亨源环保科技有限公司 | A kind of mining automatic charging stirs the dustless concrete tidal injection unit of material |
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| CN206765079U (en) * | 2017-04-28 | 2017-12-19 | 罗方武 | A kind of subway engineering construction concrete mixer |
| CN206982979U (en) * | 2017-07-11 | 2018-02-09 | 李雄伟 | A kind of novel building site construction concrete central mix plant |
| CN206899509U (en) * | 2017-07-19 | 2018-01-19 | 邱卿芳 | A kind of construction site multifunctional efficient mixer |
| CN107225685A (en) * | 2017-07-31 | 2017-10-03 | 合肥恩腾电子科技有限公司 | A kind of construction site travelling mixer |
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| CN108487919A (en) * | 2018-03-14 | 2018-09-04 | 山东科技大学 | The annular automatic mixing Wet-type concrete pulp shooting machine of full wind driving |
| CN109695460A (en) * | 2019-03-14 | 2019-04-30 | 中铁十局集团西北工程有限公司 | The injection method of concrete in a kind of constructing tunnel |
| CN109899091A (en) * | 2019-03-27 | 2019-06-18 | 中南大学 | A kind of mixing station material mixture ratio Reverse Turning Control method required based on gunite concrete work on the spot |
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Address after: 266590 No. 579, Bay Road, Huangdao District, Shandong, Qingdao Applicant after: Shandong University of Science and Technology Address before: 271000 Shandong Province, Tai'an city Taishan District mountain Street No. 223 Tai'an campus of Shandong University of Science and Technology Applicant before: Shandong University of Science and Technology |
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Application publication date: 20200204 |