CN112211649A - Wet-type concrete spraying unit and operation method thereof - Google Patents
Wet-type concrete spraying unit and operation method thereof Download PDFInfo
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- CN112211649A CN112211649A CN201910618557.4A CN201910618557A CN112211649A CN 112211649 A CN112211649 A CN 112211649A CN 201910618557 A CN201910618557 A CN 201910618557A CN 112211649 A CN112211649 A CN 112211649A
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- 238000005507 spraying Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 114
- 239000004576 sand Substances 0.000 claims abstract description 82
- 239000004568 cement Substances 0.000 claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000000843 powder Substances 0.000 claims abstract description 57
- 238000002347 injection Methods 0.000 claims abstract description 44
- 239000007924 injection Substances 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims description 154
- 238000003756 stirring Methods 0.000 claims description 19
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000000428 dust Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000004575 stone Substances 0.000 description 3
- 238000007580 dry-mixing Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007858 starting material Substances 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/12—Supplying or proportioning liquid ingredients
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C9/00—General arrangement or layout of plant
- B28C9/04—General arrangement or layout of plant the plant being mobile, e.g. mounted on a carriage or a set of carriages
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention provides a wet concrete spraying unit and an operation method thereof, wherein the wet concrete spraying unit comprises a rack, and a feeding part and a spraying part which are positioned on the rack, wherein the feeding part comprises a sand feeding assembly, a sand conveying device, a cement feeding assembly, a cement conveying device, a powder vertical mixing device and a water adding continuous mixing device. The wet concrete injection unit has the characteristics of advanced technology, reasonable structure, stable performance, energy conservation, convenient operation, long service life and the like, and can be widely applied to concrete injection construction in the operation environments of mines, tunnels, culverts, subways, hydroelectric engineering, underground engineering and the like.
Description
Technical Field
The invention belongs to the technical field of mining equipment, and relates to a wet concrete injection unit and an operation method thereof.
Background
A concrete sprayer is a machine that continuously conveys concrete along a pipe by using compressed air and sprays the concrete onto a construction surface. The dry jet machine is a dry jet machine and a wet jet machine, wherein the dry jet machine is used for pneumatically conveying dry mixing materials, and the dry mixing materials are mixed with pressure water at a nozzle and then are jetted; the latter is sprayed out by a pneumatic or concrete pump conveying concrete mixture through a nozzle. The method is widely applied to lining construction of underground engineering, roadways, tunnels, culverts and the like.
At present, in the engineering construction of mine roadways, railways and road tunnels all over the country, because the working space is limited, a rotor concrete sprayer is widely adopted as the main equipment for operation. However, when the existing concrete sprayer in the market is used underground, most of stirring is manually completed, cement, sand and stones are placed on the underground ground and stirred by a shovel, a large amount of dust is generated in the process, and the concentration is extremely high; and the uniformity of the mixed materials is very low, and the materials are not fully mixed. In addition, water is added above the rotor spraying machine in the wet stirring link of the existing concrete spraying machine or water is added on the ground artificially, so that the uniformity cannot be guaranteed, the water-cement ratio cannot be controlled, the final rebound quantity of the concrete exceeds the standard, and the due effect cannot be achieved.
CN104564108B discloses a rotor piston type concrete sprayer, which realizes high-frequency spraying of materials through helical gear transmission of S-H staggered shafts, but it still has the problems that the mixing time of the materials is short, the materials cannot be mixed and stirred in a storage manner, the materials are conveyed to a spraying mechanism during the stirring process, so that the materials cannot be uniformly mixed, the mixing ratio cannot be controlled, and the like, thereby affecting the quality of the concrete product and the operation effect.
Disclosure of Invention
The invention provides a wet concrete injection unit and an operation method thereof, aiming at the problems in the prior art. The wet concrete injection unit has the characteristics of advanced technology, reasonable structure, stable performance, energy conservation, convenient operation, long service life and the like, and can be widely applied to concrete injection construction in the operation environments of mines, tunnels, culverts, subways, hydroelectric engineering, underground engineering and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a wet concrete spraying unit, which comprises a rack, and a feeding part and a spraying part which are positioned on the rack, wherein the feeding part comprises a sand feeding assembly, a sand conveying device, a cement feeding assembly, a cement conveying device, a powder vertical mixing device and a water adding continuous mixing device;
the material outlet of the sand feeding assembly is connected with the material inlet of the sand conveying device, the material outlet of the sand conveying device is connected with the material inlet at the bottom of the powder vertical mixing device, the material outlet of the cement feeding assembly is connected with the cement conveying device, the material outlet of the cement conveying device is connected with the material inlet at the bottom of the powder vertical mixing device, the top of the powder vertical mixing device is provided with a material outlet, and the material outlet at the top of the powder vertical mixing device is connected with the material inlet of the water adding continuous mixing device; and a material outlet of the water adding continuous mixing device is connected with a material inlet of the spraying part.
The following technical solutions are preferred technical solutions of the present invention, but not limited to the technical solutions provided by the present invention, and technical objects and advantageous effects of the present invention can be better achieved and achieved by the following technical solutions.
As a preferred technical scheme of the invention, the injection part comprises a rotor feeding assembly, a rotor type injection machine and an injection port; the material inlet of the rotor feeding assembly is connected with the material outlet of the water adding continuous mixing device, the material outlet of the rotor feeding assembly is connected with the material inlet of the rotor type spraying machine, and the material outlet of the rotor type spraying machine is connected with the spraying opening.
As a preferable technical scheme of the invention, the sand material conveying device is a spiral stirrer.
In a preferred embodiment of the present invention, the cement transporting device is a screw mixer.
As a preferable technical scheme of the invention, the powder vertical mixing device is a vertical mixing device.
Preferably, the vertical powder mixing device is a vertical stirring and mixing device.
Preferably, the powder vertical mixing device is an auger type vertical stirring mixing device.
As the preferred technical scheme of the invention, the water adding continuous mixing device is an auger type stirrer, one end of the auger type stirrer is provided with a material inlet and a water adding port, the other end of the auger type stirrer is provided with a material outlet, and the material outlet is connected with the material inlet of the injection part;
preferably, the water-adding continuous mixer is supported by a support assembly.
As a preferable technical scheme of the invention, wheels are arranged below the machine frame.
As the preferable technical scheme of the invention, the sand feeding assembly is provided with the vibrator, and the material assembly is internally provided with the filtering screen.
As a preferable technical solution of the present invention, the wet concrete injection unit further includes an additive feeding device, and a material outlet of the additive feeding device is connected to a material inlet of the injection part.
In a second aspect, the present invention provides an operating method of the above wet concrete injection unit, the operating method including:
adding sand from a sand feeding assembly and conveying the sand to a vertical powder mixing device through a sand conveying device, and adding cement from a cement feeding assembly and conveying the cement to the vertical powder mixing device through a cement conveying device;
mixing sand materials and cement in a powder vertical mixing device, then feeding the mixture into a water adding continuous mixing device, adding water into the material in the water adding continuous mixing device, mixing the material with the water, and then feeding the material into an injection part for injection;
preferably, the materials are mixed by adding water in a water adding continuous mixing device, then enter a spraying part, enter a rotor type spraying machine through a rotor feeding assembly and are sprayed through a spraying port;
preferably, both the sand and cement feed assemblies remain empty during operation.
Compared with the prior art, the invention has the following beneficial effects:
(1) the powder in the wet concrete sprayer unit is mixed firstly, and then water is added for mixing after the powder is mixed uniformly, so that the material mixing time is prolonged, the quality of a concrete finished product is improved, and the rebound rate can be reduced to about 9%;
(2) the wet concrete spraying unit has the advantages that the materials are automatically proportioned and added, the stirring is uniform, the water-cement ratio is accurately controlled, the hydration of cement sand stone is facilitated, the dust is small, the finally formed concrete has good homogeneity and high strength, and the compressive strength of 1 day can reach 9 MPa;
(3) the wet concrete injection unit is respectively provided with a sand feeding assembly and a cement feeding assembly, and in the operation process, personnel only need to put materials into corresponding feeding ports, and equipment sequentially enters a conveying and stirring link according to a preset proportion; meanwhile, the wet stirring link of the wet concrete spraying unit is uniform and continuous, water can be automatically added according to a set value, materials are always kept in the operation process, and continuous spraying can be realized; moreover, the water-cement ratio of the material can be fixed, the stirring uniformity is high, uninterrupted work is achieved, automatic control is realized, the production efficiency is improved, and the labor intensity of operators is reduced;
(4) the whole device of the wet concrete injection unit is of a full-sealing structure, so that the harm caused by the generation of a large amount of dust is effectively avoided.
Drawings
Fig. 1 is a schematic structural view of a wet concrete injection unit according to embodiment 1 of the present invention;
the system comprises a sand feeding assembly, a sand conveying device, a cement feeding assembly, a cement conveying device, a powder vertical mixing device, a water adding continuous mixing device, a rotor feeding assembly, a rotor type spraying machine and a spraying opening, wherein the sand feeding assembly is 1, the sand conveying device is 2, the cement feeding assembly is 3, the cement conveying device is 4, the powder vertical mixing device is 5, the water adding continuous mixing device is 6, the rotor type spraying machine is 7, and the spraying opening is 9.
Detailed Description
In order to better illustrate the present invention and facilitate the understanding of the technical solutions of the present invention, the present invention is further described in detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
The invention provides a wet concrete injection unit, which comprises a rack, a feeding part and an injection part, wherein the feeding part and the injection part are positioned on the rack, and the feeding part comprises a sand feeding component 1, a sand conveying device 2, a cement feeding component 3, a cement conveying device 4, a vertical powder mixing device 5 and a water adding continuous mixing device 6;
the material outlet of the sand feeding assembly 1 is connected with the material inlet of the sand conveying device 2, the material outlet of the sand conveying device 2 is connected with the material inlet at the bottom of the powder vertical mixing device 5, the material outlet of the cement feeding assembly 3 is connected with the cement conveying device 4, the material outlet of the cement conveying device 4 is connected with the material inlet at the bottom of the powder vertical mixing device 5, the top of the powder vertical mixing device 5 is provided with a material outlet, and the material outlet at the top of the powder vertical mixing device 5 is connected with the material inlet of the water adding continuous mixing device 6; the material outlet of the water adding continuous mixing device 6 is connected with the material inlet of the spraying part.
In the present invention, the injection part is fixed to one side of the frame, and the charging part is disposed in a space other than the injection part of the frame.
In the present invention, the sand feeding assembly, the cement feeding assembly and the rotor feeding assembly may all take the form of a feed hopper.
The following technical solutions are preferred technical solutions of specific embodiments, but are not limited to the technical solutions provided by the present invention, and the technical objects and advantageous effects of the present invention can be better achieved and realized by the following technical solutions.
As a preferable technical scheme of the specific embodiment, the injection part comprises a rotor feeding assembly 7, a rotor type injection machine 8 and an injection port 9; the material inlet of the rotor feeding assembly 7 is connected with the material outlet of the water adding continuous mixing device 6, the material outlet of the rotor feeding assembly 7 is connected with the material inlet of the rotor type spraying machine 8, and the material outlet of the rotor type spraying machine 8 is connected with the spraying opening 9.
In the present invention, the rotor type injection machine is a conventional device in the field, and the structure thereof is not described again.
As a preferable technical solution of the specific embodiment, the sand material conveying device 2 is a helical agitator.
In a preferred embodiment, the cement conveyer 4 is a screw mixer.
As a preferable technical scheme of the specific embodiment, the powder vertical mixing device 5 is a vertical mixing device.
Preferably, the vertical powder mixing device 5 is a vertical stirring and mixing device.
Preferably, the vertical powder mixing device 5 is an auger-type vertical stirring and mixing device.
As a preferable technical solution of the specific embodiment, the continuous water-adding mixing device 6 is an auger type stirrer, one end of which is provided with a material inlet and a water-adding port, and the other end of which is provided with a material outlet, and the material outlet is connected with the material inlet of the injection part.
Preferably, the watering continuous mixer 6 is supported by a support assembly.
As a preferable technical scheme of the specific implementation mode, wheels are arranged below the machine frame to realize movement.
As a preferable technical scheme of the specific implementation mode, the sand feeding assembly 1 is provided with a vibrator, and a filtering screen is arranged in the sand feeding assembly and can filter large particles in sand materials to prevent the sand materials from blocking a pipeline; and (5) auxiliary blanking by using a vibrator.
As a preferable technical solution of the specific embodiment, the wet concrete injection unit further comprises an additive adding device, and a material outlet of the additive adding device is connected with a material inlet of the injection part; further, the material outlet of the additive feeding device is connected with the material inlet of the rotor feeding assembly in the spraying part.
Furthermore, the wet concrete spraying unit comprises a rack, and a feeding part and a spraying part which are positioned on the rack, wherein the feeding part comprises a sand feeding assembly 1, a sand conveying device 2, a cement feeding assembly 3, a cement conveying device 4, a powder vertical mixing device 5 and a water adding continuous mixing device 6;
the material outlet of the sand feeding assembly 1 is connected with the material inlet of the sand conveying device 2, the material outlet of the sand conveying device 2 is connected with the material inlet at the bottom of the powder vertical mixing device 5, the material outlet of the cement feeding assembly 3 is connected with the cement conveying device 4, the material outlet of the cement conveying device 4 is connected with the material inlet at the bottom of the powder vertical mixing device 5, the top of the powder vertical mixing device 5 is provided with a material outlet, and the material outlet at the top of the powder vertical mixing device 5 is connected with the material inlet of the water adding continuous mixing device 6; a material outlet of the water adding continuous mixing device 6 is connected with a material inlet of the spraying part; the wet concrete spraying unit comprises a rack, and a feeding part and a spraying part which are positioned on the rack, wherein the feeding part comprises a sand feeding component 1, a sand conveying device 2, a cement feeding component 3, a cement conveying device 4, a powder vertical mixing device 5 and a water adding continuous mixing device 6;
the material outlet of the sand feeding assembly 1 is connected with the material inlet of the sand conveying device 2, the material outlet of the sand conveying device 2 is connected with the material inlet at the bottom of the powder vertical mixing device 5, the material outlet of the cement feeding assembly 3 is connected with the cement conveying device 4, the material outlet of the cement conveying device 4 is connected with the material inlet at the bottom of the powder vertical mixing device 5, the top of the powder vertical mixing device 5 is provided with a material outlet, and the material outlet at the top of the powder vertical mixing device 5 is connected with the material inlet of the water adding continuous mixing device 6; the material outlet of the water adding continuous mixing device 6 is connected with the material inlet of the spraying part.
In a second aspect, the present embodiment provides, in part, a method of operating the wet concrete injection unit, the method including:
adding sand from a sand feeding assembly 1 and conveying the sand to a vertical powder mixing device 5 through a sand conveying device 2, and adding cement from a cement feeding assembly 3 and conveying the cement to the vertical powder mixing device 5 through a cement conveying device 4;
the sand material and the cement are mixed in the vertical powder mixing device 5 and then are sent into the water adding continuous mixing device 6, and the materials are added with water and mixed in the water adding continuous mixing device 6 and then enter the spraying part for spraying.
Preferably, the materials are mixed by adding water in the water continuous mixing device 6, then enter the spraying part, enter the rotor type spraying machine 8 through the rotor feeding assembly 7 and are sprayed through the spraying port 9.
Preferably, both the sand feed assembly 1 and the cement feed assembly 3 remain empty during operation.
In the invention, the sand feeding component 1 is designed according to human engineering, and one person can easily feed the sand.
The following are typical but non-limiting examples of the invention:
example 1:
the embodiment provides a wet concrete spraying unit and an operation method thereof, and as shown in fig. 1, the wet concrete spraying unit comprises a rack, and a feeding part and a spraying part which are positioned on the rack, wherein the feeding part comprises a sand feeding assembly 1, a sand conveying device 2, a cement feeding assembly 3, a cement conveying device 4, a vertical powder mixing device 5 and a continuous water adding mixing device 6;
the material outlet of the sand feeding assembly 1 is connected with the material inlet of the sand conveying device 2, the material outlet of the sand conveying device 2 is connected with the material inlet at the bottom of the powder vertical mixing device 5, the material outlet of the cement feeding assembly 3 is connected with the cement conveying device 4, the material outlet of the cement conveying device 4 is connected with the material inlet at the bottom of the powder vertical mixing device 5, the top of the powder vertical mixing device 5 is provided with a material outlet, and the material outlet at the top of the powder vertical mixing device 5 is connected with the material inlet of the water adding continuous mixing device 6; a material outlet of the water adding continuous mixing device 6 is connected with a material inlet of the spraying part; the injection part comprises a rotor feeding assembly 7, a rotor type injection machine 8 and an injection port 9; the material inlet of the rotor feeding assembly 7 is connected with the material outlet of the water adding continuous mixing device 6, the material outlet of the rotor feeding assembly 7 is connected with the material inlet of the rotor type spraying machine 8, and the material outlet of the rotor type spraying machine 8 is connected with the spraying opening 9.
Wherein the sand material conveying device 2 is a spiral stirrer; the cement conveying device 4 is a spiral stirrer; the powder vertical mixing device 5 is a vertical stirring and mixing device; the water adding continuous mixing device 6 is an auger type stirrer, one end of the water adding continuous mixing device is provided with a material inlet and a water adding port, the other end of the water adding continuous mixing device is provided with a material outlet, and the material outlet is connected with the material inlet of the injection part; the water adding continuous mixer 6 is supported by a support component; the sand feeding component 1 is provided with a vibrator, and the inside of the sand feeding component is provided with a filter screen.
The operation method of the wet concrete injection unit comprises the following steps:
adding sand from a sand feeding assembly 1 and conveying the sand to a vertical powder mixing device 5 through a sand conveying device 2, and adding cement from a cement feeding assembly 3 and conveying the cement to the vertical powder mixing device 5 through a cement conveying device 4;
the sand material and the cement are mixed in the vertical powder mixing device 5 and then are sent into the water adding continuous mixing device 6, the materials are added with water and mixed in the water adding continuous mixing device 6 and then enter the spraying part, enter the rotor type spraying machine 8 through the rotor feeding assembly 7 and are sprayed through the spraying opening 9.
The sand feeding assembly 1 and the cement feeding assembly 3 are kept in an empty state during operation.
In the operation process, the cement is added into a bag of 50kg in 3min to 4min, and water in the water adding continuous mixing device 6 is quantitatively added according to the requirement.
The operating parameters of the wet concrete injection unit are shown in table 1.
Table 1: example 1 Table of operating parameters of wet concrete injection unit
The wet concrete spraying unit improves the quality of a concrete finished product, the rebound rate can be reduced to about 9%, the finally formed concrete has good homogeneity and high strength, and the compressive strength of 1 day reaches 9 MPa.
Comparative example 1:
the present comparative example 1 provides a wet concrete sprayer unit in the prior art, in which sand is mixed with water, then mixed and stirred with cement, and then fed into a rotor type sprayer to be sprayed through a nozzle.
The water-cement ratio in the wet concrete spraying unit in the comparative example cannot be accurately controlled, the hydration of cement sand and stone is not facilitated, the quality of finally formed concrete is reduced, the rebound rate is 12%, and the 1-day compressive strength is only 6 MPa.
Comparative example 2:
this comparative example 1 provides a wet concrete sprayer unit in the prior art, in which sand, cement and water are first manually proportioned and then directly added into a stirring device to be stirred, and then sprayed from a rotor sprayer through a nozzle.
In the wet concrete sprayer unit in the comparative example, the quality of the finally formed concrete is reduced due to insufficient material stirring, the rebound rate is 15%, and the 1-day compressive strength is only 5 MPa.
To sum up, the embodiment and the comparative example are provided, the wet concrete injection unit is respectively provided with a sand feeding component and a cement feeding component, in the operation process, personnel only need to put materials into corresponding feeding ports, and equipment sequentially enters a conveying and stirring link according to a preset proportion; meanwhile, the wet stirring link of the wet concrete spraying unit is uniform and continuous, water can be automatically added according to a set value, materials are always kept in the operation process, and continuous spraying can be realized; moreover, the water-cement ratio of the material can be fixed, the stirring uniformity is high, uninterrupted work is achieved, automatic control is achieved, the production efficiency is improved, and the labor intensity of operators is reduced.
The whole device of the wet concrete injection unit is of a full-sealing structure, so that the harm caused by the generation of a large amount of dust is effectively avoided.
The applicant indicates that the present invention is illustrated in detail by the above examples, but the present invention is not limited to the above detailed application, that is, the present invention is not meant to be necessarily dependent on the above detailed method. It will be apparent to those skilled in the art that any modifications to the invention, equivalent alterations to the starting materials for the products of the invention, and additions of auxiliary components, specific operating conditions and modes of choice, etc., are deemed to be within the scope and disclosure of the invention.
Claims (10)
1. The wet concrete spraying unit is characterized by comprising a rack, a feeding part and a spraying part, wherein the feeding part and the spraying part are positioned on the rack, and the feeding part comprises a sand feeding assembly (1), a sand conveying device (2), a cement feeding assembly (3), a cement conveying device (4), a vertical powder mixing device (5) and a continuous water adding mixing device (6);
the material outlet of the sand feeding assembly (1) is connected with the material inlet of the sand conveying device (2), the material outlet of the sand conveying device (2) is connected with the material inlet at the bottom of the powder vertical mixing device (5), the material outlet of the cement feeding assembly (3) is connected with the cement conveying device (4), the material outlet of the cement conveying device (4) is connected with the material inlet at the bottom of the powder vertical mixing device (5), the top of the powder vertical mixing device (5) is provided with the material outlet, and the material outlet at the top of the powder vertical mixing device (5) is connected with the material inlet of the water adding continuous mixing device (6); the material outlet of the water adding continuous mixing device (6) is connected with the material inlet of the spraying part.
2. A wet concrete sprayer unit according to claim 1, characterized in that said spraying section comprises a rotor feed assembly (7), a rotor sprayer (8) and a spray orifice (9); the material inlet of the rotor feeding assembly (7) is connected with the material outlet of the water adding continuous mixing device (6), the material outlet of the rotor feeding assembly (7) is connected with the material inlet of the rotor type spraying machine (8), and the material outlet of the rotor type spraying machine (8) is connected with the jet orifice (9).
3. Wet concrete injection unit according to claim 1, characterised in that said sand conveying means (2) is a helical mixer.
4. Wet concrete injection unit according to claim 1, characterised in that said cement conveying means (4) is a helical mixer.
5. Wet concrete injection unit according to claim 1, characterised in that said vertical powder mixing device (5) is a vertical mixing device;
preferably, the powder vertical mixing device (5) is a vertical stirring and mixing device;
preferably, the powder vertical mixing device (5) is an auger type vertical stirring and mixing device.
6. The wet concrete sprayer unit according to claim 1, wherein the watering continuous mixing device (6) is an auger mixer having a material inlet and a watering opening at one end and a material outlet at the other end, the material outlet being connected to the material inlet of the spraying section;
preferably, the watering continuous mixer (6) is supported by a support assembly.
7. The wet concrete sprayer unit of claim 1, wherein wheels are provided under the frame.
8. The wet concrete sprayer unit as claimed in claim 1, wherein a vibrator is provided on the sand feed assembly (1) and a filter screen is provided inside the material assembly.
9. The wet concrete sprayer unit of claim 1, further comprising an additive dosing device having a material outlet connected to the material inlet of the spray section.
10. A method of operating a wet concrete injection unit according to any one of claims 1 to 9, characterised in that it comprises:
adding sand from a sand feeding assembly (1) and conveying the sand to a vertical powder mixing device (5) through a sand conveying device (2), and adding cement from a cement feeding assembly (3) and conveying the cement to the vertical powder mixing device (5) through a cement conveying device (4);
the sand material and the cement are mixed in the vertical powder mixing device (5) and then are sent into the water adding continuous mixing device (6), and the materials are added with water and mixed in the water adding continuous mixing device (6) and then enter the spraying part for spraying;
preferably, the materials are added with water and mixed in a water adding continuous mixing device (6), then enter a spraying part, enter a rotor type spraying machine (8) through a rotor feeding assembly (7) and are sprayed through a spraying port (9);
preferably, the sand feeding assembly (1) and the cement feeding assembly (3) are kept in an empty state during operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910618557.4A CN112211649A (en) | 2019-07-10 | 2019-07-10 | Wet-type concrete spraying unit and operation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910618557.4A CN112211649A (en) | 2019-07-10 | 2019-07-10 | Wet-type concrete spraying unit and operation method thereof |
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| CN112211649A true CN112211649A (en) | 2021-01-12 |
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|---|---|---|---|
| CN201910618557.4A Pending CN112211649A (en) | 2019-07-10 | 2019-07-10 | Wet-type concrete spraying unit and operation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102733823A (en) * | 2012-07-03 | 2012-10-17 | 河南省煤炭科学研究院有限公司 | Mining method for jetting concrete in wet type |
| CN102817622A (en) * | 2012-10-08 | 2012-12-12 | 江苏中机矿山设备有限公司 | Negative pressure type concrete wet-spray machine set |
| CN102953736A (en) * | 2011-08-17 | 2013-03-06 | 闫冬生 | Novel grout spraying machine |
| CN103104266A (en) * | 2013-03-07 | 2013-05-15 | 江苏鼎甲科技有限公司 | Wet-type concrete spraying unit |
| CN210343367U (en) * | 2019-07-03 | 2020-04-17 | 山东博宏建材科技有限公司 | Wet-type concrete sprays unit |
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2019
- 2019-07-10 CN CN201910618557.4A patent/CN112211649A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953736A (en) * | 2011-08-17 | 2013-03-06 | 闫冬生 | Novel grout spraying machine |
| CN102733823A (en) * | 2012-07-03 | 2012-10-17 | 河南省煤炭科学研究院有限公司 | Mining method for jetting concrete in wet type |
| CN102817622A (en) * | 2012-10-08 | 2012-12-12 | 江苏中机矿山设备有限公司 | Negative pressure type concrete wet-spray machine set |
| CN103104266A (en) * | 2013-03-07 | 2013-05-15 | 江苏鼎甲科技有限公司 | Wet-type concrete spraying unit |
| CN210343367U (en) * | 2019-07-03 | 2020-04-17 | 山东博宏建材科技有限公司 | Wet-type concrete sprays unit |
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Application publication date: 20210112 |