CN210343367U - Wet-type concrete sprays unit - Google Patents
Wet-type concrete sprays unit Download PDFInfo
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- CN210343367U CN210343367U CN201921025313.7U CN201921025313U CN210343367U CN 210343367 U CN210343367 U CN 210343367U CN 201921025313 U CN201921025313 U CN 201921025313U CN 210343367 U CN210343367 U CN 210343367U
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Abstract
The utility model provides a wet concrete sprayer unit, wet concrete sprayer unit includes the frame and is located reinforced subtotal injection part in the frame, reinforced subtotal injection part includes sand material feeding component, sand material conveyor, cement feeding component, cement conveyor, the vertical mixing arrangement of powder and the continuous mixing arrangement that adds water. Wet-type concrete sprays unit has characteristics such as advanced, rational in infrastructure, stable performance, energy-conservation, convenient operation and long service life of technique, can extensively be applicable to the shotcrete construction of operation environment such as mine, tunnel, culvert, subway, water and electricity engineering, underground works.
Description
Technical Field
The utility model belongs to the technical field of mining equipment, a wet concrete sprays unit is related to.
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.
SUMMERY OF THE UTILITY MODEL
To the problem among the prior art, the utility model provides a wet concrete sprayer unit. Wet-type concrete sprays unit has characteristics such as advanced, rational in infrastructure, stable performance, energy-conservation, convenient operation and long service life of technique, can extensively be applicable to the shotcrete construction of operation environment such as mine, tunnel, culvert, subway, water and electricity engineering, underground works.
To achieve the purpose, the utility model adopts the following technical proposal:
in a first aspect, the utility model provides a wet concrete spraying unit, which comprises a frame, a feeding part and a spraying part, wherein the feeding part and the spraying part are positioned on the frame, and the feeding part comprises a sand feeding component, a sand conveying device, a cement feeding component, 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.
Following conduct the utility model discloses preferred technical scheme, nevertheless do not conduct the utility model provides a technical scheme's restriction, through following technical scheme, can reach and realize better the utility model discloses a technical purpose and beneficial effect.
As the preferred technical scheme of the utility model, the injection part comprises a rotor feeding assembly, a rotor type injection machine and a jet orifice; 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 the preferred technical scheme of the utility model, sand material conveyor is the helical agitator.
As the preferred technical scheme of the utility model, cement conveyor is the helical agitator.
As the utility model discloses preferred technical scheme, the vertical mixing arrangement of powder is vertical mixing arrangement.
Preferably, the powder vertical mixing device is an auger type vertical stirring mixing device.
As the utility model discloses preferred technical scheme, the continuous mixing arrangement that adds water is auger formula agitator, and its one end is equipped with material inlet and filler, and the other end is equipped with the material export, the material export with the material entry of injection part links to each other.
The water adding continuous mixer is supported by a support component.
As the utility model discloses preferred technical scheme, the frame is equipped with the wheel.
As the utility model discloses preferred technical scheme, be equipped with the vibrator on the sand material feeding subassembly, the inside filter screen that is equipped with of material subassembly.
As the utility model discloses preferred technical scheme, wet concrete sprayer unit still includes additive and adds the device, the material export of additive interpolation device links to each other with the material entry of injection part.
In a second aspect, the present invention provides a method of operating the wet concrete injection unit, the method comprising:
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 utility model discloses following beneficial effect has:
(1) the powder in the wet concrete sprayer unit is mixed firstly, and then is mixed with water after being mixed uniformly, so that the material mixing time is prolonged, the quality of concrete finished products is improved, and the rebound resilience can be reduced to about 9%;
(2) the wet concrete spraying unit of the utility model has the advantages of automatic material proportioning and addition, uniform stirring, accurate water-cement ratio control, and contribution to the hydration of cement, sand and stone, so that the dust is small, the finally formed concrete has good homogeneity and high strength, and the compressive strength in 1 day can reach 9 MPa;
(3) the wet concrete spraying unit of the utility model 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 feed ports, and the equipment can sequentially enter into the conveying and stirring links according to the 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 wet concrete sprayer unit is full seal structure, has effectively stopped because of producing the harm that a large amount of dust brought.
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
To better explain the utility model, the technical proposal of the utility model is convenient to understand, and the utility model is further explained in detail below. However, the following embodiments are only simple examples of the present invention, and do not represent or limit the scope of the present invention, which is defined by the appended claims.
The specific embodiment of the utility model provides a wet concrete sprayer unit, which comprises a frame, a feeding part and a spraying part, wherein the feeding part and the spraying part are positioned on the frame, 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 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; the material outlet of the water adding continuous mixing device 6 is connected with the material inlet of the spraying part.
The utility model discloses in, one side in the frame is fixed in to the injection part, and reinforced part sets up the space except injection part in the frame.
The utility model discloses in, sand material feeding subassembly, cement feeding subassembly and rotor feeding subassembly all can take the form of feeder hopper.
The technical purpose and advantages of the present invention can be better achieved and realized by the following technical solutions, which are not to be construed as limitations of the technical solutions provided by the present invention.
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.
The utility model discloses in, rotor type jet plane is the conventional device in this field, and no longer gives details to its structure.
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.
As a preferable technical scheme of the specific embodiment, the powder vertical 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.
The utility model discloses in, sand material feeding subassembly 1 is according to the ergonomic design, the material loading that alone can relax.
The following are typical but non-limiting examples of the present 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 an auger type 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 adopted, the wet concrete spraying unit of the utility model is respectively provided with a sand feeding component and a cement feeding component, in the operation process, a person only needs to put the materials into corresponding feeding ports, and the equipment can sequentially enter into the conveying and stirring links according to the 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 wet concrete sprayer unit is full seal structure, has effectively stopped because of producing the harm that a large amount of dust brought.
The applicant has stated that the present invention is described in detail by the above embodiments, but the present invention is not limited to the above detailed application, that is, the present invention can be implemented only by relying on the above detailed method. It should be clear to those skilled in the art that any modifications to the invention, to the equivalent replacement of the product materials of the invention and the addition of auxiliary components, the selection of specific operating conditions and modes, etc., all fall within the scope of protection 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 sprayer unit according to claim 1, characterized in that said vertical powder mixing device (5) is a vertical mixing device.
6. Wet concrete injection unit according to claim 1, characterised in that said vertical powder mixing device (5) is an auger-type vertical mixer.
7. 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;
the water adding continuous mixing device (6) is supported by a support component.
8. The wet concrete sprayer unit of claim 1, wherein wheels are provided under the frame.
9. 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.
10. 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.
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| CN201921025313.7U CN210343367U (en) | 2019-07-03 | 2019-07-03 | Wet-type concrete sprays unit |
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| CN201921025313.7U CN210343367U (en) | 2019-07-03 | 2019-07-03 | Wet-type concrete sprays unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211649A (en) * | 2019-07-10 | 2021-01-12 | 北京中矿时代工程技术研究院有限公司 | Wet-type concrete spraying unit and operation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112211649A (en) * | 2019-07-10 | 2021-01-12 | 北京中矿时代工程技术研究院有限公司 | Wet-type concrete spraying unit and operation method thereof |
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