CN216077139U - Spiral concrete sprayer - Google Patents

Abstract

The utility model relates to the field of concrete processing, and particularly discloses a spiral concrete sprayer which comprises a rack, an accelerator adding unit, a stirring hopper, a pushing unit and a spray head, wherein the stirring hopper, the pushing unit and the spray head are sequentially connected and communicated; and an inwards concave guide groove is formed in the inner wall of the spray head. Adopt the accelerator and the liquid feeding controller of control accelerator quantity in this scheme, can effectually let the accelerator of corresponding measurement mix before the blowout with the concrete, reduced the rebound rate of concrete, and then reach and practice thrift construction cost, improve work efficiency and quality, and reach the purpose to construction all ring edge borders protection.

Description

Spiral concrete sprayer

Technical Field

The utility model relates to the technical field of concrete processing, in particular to a spiral concrete sprayer.

Background

The conventional concrete sprayer can utilize compressed air to spray concrete mixed according to a certain water-cement ratio at a high speed through a conveying pipe and a nozzle of a sprayer, so that a concrete supporting layer is formed on a sprayed surface.

The spraying machine adopts a linear or streamline pipeline to transmit the concrete, so that when the concrete is conveyed to the nozzle, the flow velocity of the concrete is high, when the concrete impacts the ground, the horizontal spraying resilience rate of wet-sprayed concrete is about 20%, the upward spraying of the concrete reaches 30%, the falling position of the part of the rebounded concrete is not controlled, and the condition that the amount of the adhered concrete is insufficient on the bottom surface of the concrete with enough quantity to be sprayed is easily caused, so that the construction quality is influenced; meanwhile, concrete is easily wasted, construction cost is greatly increased, and the surrounding of the construction environment is polluted by the splashed concrete.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a spiral concrete sprayer, which solves the problem that the rebound rate of concrete is higher when the concrete is sprayed out of the original concrete sprayer in the prior art.

According to the embodiment of the utility model, the spiral concrete sprayer comprises a rack, a stirring hopper, a material pushing unit, a spray head and an accelerator adding unit, wherein the stirring hopper, the material pushing unit and the spray head are sequentially connected and communicated; the inner wall of the spray head is provided with an inwards concave guide groove.

The technical principle of the utility model is as follows: when the stirred concrete enters the material pushing unit, the material pushing pipe pushes the concrete, so that the material pushing pipe enters the spray head through the feeding pipe, in the process, the liquid adding controller synchronously conveys the accelerating agent with the corresponding dosage from the accelerating agent feeding box to the material pushing pipe, so that the accelerating agent with the corresponding dosage is synchronously added into the concrete by the feeding pipe, and the accelerating agent and the concrete are mixed to generate a hydration reaction, so that the fluidity of the concrete can be rapidly reduced; when the concrete is sprayed out from the spray head, the guide groove can decelerate and guide the concrete, and after the double deceleration treatment, the rebound rate of the concrete is reduced to be within 20 percent when the concrete is sprayed to the ground.

Compared with the prior art, the utility model has the following beneficial effects: by adopting the accelerating agent and the liquid adding controller for controlling the using amount of the accelerating agent, the accelerating agent with corresponding measurement can be effectively mixed with the concrete, so that the flow speed of the concrete is reduced, and the rebound rate of the concrete when being sprayed to the ground can be effectively reduced; meanwhile, the guide groove is adopted to guide the concrete, the flow velocity of the concrete is further reduced under the limiting of the guide groove, the concrete can be guided to flow, and the rebound rate of the concrete during spraying is further reduced.

Further, the material pushing pipe comprises a conveying pipe horizontally and fixedly arranged on the rack and an L-shaped connecting pipe, the upper side of one end of the conveying pipe is communicated with the stirring hopper, the lower side of the other end of the conveying pipe is connected with the upper end of the connecting pipe, and the other end of the connecting pipe is communicated with the spray head; the filling tube is communicated with the vertical end of the connecting tube, and stirring blades are coaxially and rotatably arranged in one end of the connecting tube which is horizontally arranged.

Through the arrangement, the conveying pipe can convey the concrete in the stirring hopper into the connecting pipe at the lower side from top to bottom, and the concrete flows smoothly; simultaneously when the concrete when the connecting pipe, the accelerating agent is added to the concrete earlier to the filling tube, and when the concrete that has added the accelerating agent when stirring fan blade, stirring fan blade is impacted by the concrete and is rotated, realizes the mixing to accelerating agent and concrete, lets the mixture of concrete and accelerating agent more even.

Furthermore, a corrugated pipe is detachably connected between the connecting pipe and the spray head.

When the ground position that needs the spraying concrete changes, the shower nozzle can be held to the staff, and the bellows extension or shorten is pulled to this moment for the shower nozzle is just right with the ground of waiting to spray concrete, can realize accurate construction.

Furthermore, one end of the corrugated pipe is provided with first threads, the other end of the corrugated pipe is provided with second threads, one end of the connecting pipe, which is close to the corrugated pipe, is provided with third threads which can be meshed with the first threads, one end of the spray head, which is close to the corrugated pipe, is provided with fourth threads which can be meshed with the second threads, and the third threads can be meshed with the fourth threads.

When the corrugated pipe needs to be cleaned or replaced after long-term use, the first thread and the third thread are disassembled, and the second thread and the fourth thread are disassembled, so that the corrugated pipe can be disassembled, and the corrugated pipe is convenient to treat; when the environment of use need not to use the bellows, also can be with the fourth screw thread direct meshing of the third screw thread on the connecting pipe and shower nozzle, realize that the shower nozzle uses directly, let the service environment of shower nozzle can be more changeable.

Further, the guide slot is the heliciform, and the guide slot coaxial setting is on the inner wall of shower nozzle.

The spiral guide groove can prolong the flow path of partial concrete passing through the spray head, thereby effectively reducing the flow speed of the concrete and reducing the rebound rate of the sprayed concrete.

Furthermore, a handle is fixedly arranged on the outer wall of the spray head.

Through the arrangement, the handle is convenient to hold, and the orientation of the spray head is adjusted.

Further, the material pushing unit further comprises a rotating shaft, a spiral sheet and a motor, wherein the spiral sheet is coaxially and fixedly installed on the rotating shaft, the motor drives the rotating shaft to rotate, the rotating shaft and the spiral sheet are coaxially and rotatably arranged in the conveying pipe, the motor is fixedly installed outside one end of the conveying pipe, and two ends, far away from the motor, of the rotating shaft are rotatably and hermetically connected with the end portion of the conveying pipe.

Through the setting, under motor power take off, drive axis of rotation and flight synchronous rotation for the flight promotes the concrete and removes to the direction of connecting pipe, realizes the stable and quick propelling movement to the concrete.

Drawings

FIG. 1 is a front sectional view of a screw type concrete sprayer apparatus according to example 1 of the present invention.

Fig. 2 is a front sectional view of a screw type concrete sprayer apparatus according to embodiment 2 of the present invention.

In the above drawings: the quick-setting admixture feeding device comprises a frame 10, a stirring hopper 20, a spray head 30, a fourth thread 301, a guide groove 302, a handle 303, a rotating shaft 401, a spiral piece 402, a motor 403, a conveying pipe 501, a connecting pipe 502, a third thread 512, an accelerating admixture feeding box 601, a liquid feeding controller 602, a feeding pipe 603, a fixing ring 701, stirring blades 702, a corrugated pipe 80, a first thread 801 and a second thread 802.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the embodiments.

Example 1

As shown in fig. 1, an embodiment of the present invention provides a spiral concrete spraying machine, including a rack 10, an accelerator adding unit, and a stirring hopper 20, a pushing unit, and a spraying head 30 connected in sequence and in communication, where the stirring hopper 20 is provided with an air pressure pressurizing unit (not shown), the pushing unit includes a pushing pipe, a rotating shaft 401, a spiral sheet 402 coaxially welded on the rotating shaft 401, and a motor 403 driving the rotating shaft to rotate, the pushing pipe includes a conveying pipe 501 horizontally welded on the rack 10 and a connecting pipe 502 having an "L" shaped longitudinal section, an upper side of a right end of the conveying pipe 501 is communicated and welded with a lower end of the stirring hopper 20, a lower side of a left end of the conveying pipe 501 is communicated and integrally formed with an upper end of the connecting pipe 502, and a left end of the connecting pipe 502 is communicated and threadedly connected with a right end of the spraying head 30; meanwhile, the rotating shaft 401 and the spiral piece 402 are coaxially and rotatably arranged in the conveying pipe 501, the motor 403 is welded outside the right end of the conveying pipe 501, and two ends, far away from the motor 403, of the rotating shaft 401 are rotatably and hermetically connected with the end part of the conveying pipe 501.

As shown in fig. 1, the accelerator adding unit comprises an accelerator feeding tank 601, a liquid feeding controller 602 and a feeding pipe 603 which are connected in sequence and communicated, the liquid feeding controller 602 is a digital mass flow meter of type ACU10FD-MM, both the accelerator feeding tank 601 and the liquid feeding controller 602 are fixedly connected with the frame 10 through bolts, and a liquid accelerator is contained in the accelerator feeding tank 601; the left end of the feeding pipe 603 is communicated with the middle part of the vertical end of the connecting pipe 502 and is welded; the inner wall of one horizontally arranged end of the connecting pipe 502 is welded with a fixing ring 701, stirring fan blades 702 are rotatably mounted in the fixing ring 701, and the stirring fan blades 702 and the connecting pipe 502 are coaxially arranged.

In addition, an inner wall of the nozzle 30 is provided with a concave guide groove 302, the guide groove 302 is spiral, and the guide groove 302 is coaxially arranged on the inner wall of the nozzle 30.

When the spiral concrete sprayer device in this embodiment is used, the concrete related materials are placed into the mixing hopper 20 at first and are mixed to form the concrete in a solid-liquid mixing state, the concrete enters the conveying pipe 501 rapidly under the action of the air pressure pressurizing unit, at this time, the motor 403 drives the rotating shaft 401 and the spiral piece 402 to rotate synchronously, and when the concrete is stirred, the concrete is conveyed to the left end of the conveying pipe 501, so that the concrete smoothly enters the connecting pipe 502.

After the concrete enters the connecting pipe 502, the liquid feeding controller 602 synchronously conveys the accelerating agent with corresponding dosage from the accelerating agent feeding box 601 to the feeding pipe 603, so that the feeding pipe 603 synchronously adds the accelerating agent with corresponding dosage to the concrete, when the concrete added with the accelerating agent passes through the stirring fan blade 702, the stirring fan blade 702 is impacted and rotated by the concrete, the mixing and stirring of the accelerating agent and the concrete are realized, and the accelerating agent and the concrete are mixed to generate a hydration reaction, so that the fluidity of the concrete can be rapidly reduced, and the flow rate of the whole concrete is further reduced; meanwhile, the mixed concrete and the accelerating agent immediately enter the spray head 30, the spiral guide groove 302 in the spray head 30 can decelerate and guide the concrete, so that the flow speed of the concrete can be further decelerated, when the concrete impacts the ground, the rebound rate of the whole concrete can be reduced to be within 10 percent, the rebound rate of the concrete can be obviously reduced, the construction cost can be saved, the work efficiency and the quality can be improved, and the purpose of protecting the surrounding environment of construction can be achieved.

In the process, the mixing time of the concrete and the accelerator is controlled, so that the concrete and the accelerator cannot be mixed too early, excessive anhydrous reaction between the concrete and the accelerator is caused, the concrete is quickly hardened, and the speed of the concrete can be reduced by about 5-8% under the action of the accelerator pair before the concrete is sprayed out of the spray head 30; meanwhile, the flow of the concrete can be further reduced by about 2-5% under the limitation of the guide groove 302 pair, and the rebound rate of the concrete can be further effectively reduced.

Example 2

Embodiment 2 is basically different from embodiment 1 in that as shown in fig. 2, the spray head further includes a corrugated tube 80, the corrugated tube 80 is detachably disposed between the connection tube 502 and the spray head 30, a right end of the corrugated tube 80 is provided with a first thread 801, another end of the corrugated tube 80 is provided with a second thread 802, one end of the connection tube 502 close to the corrugated tube 80 is provided with a third thread 512 capable of meshing with the first thread 801, one end of the spray head 30 close to the corrugated tube 80 is provided with a fourth thread 301 capable of meshing with the second thread 802, and the third thread 512 is capable of meshing with the fourth thread 301; wherein the first thread 801 and the fourth thread 301 are internal threads and the second thread 802 and the third thread 512 are external threads.

In addition, a handle 303 is welded to an outer wall of the head 30.

When the spiral concrete sprayer device in the embodiment is used, a human hand can hold the handle 303 on the sprayer 30, and at the moment, the corrugated pipe 80 is pulled to extend or shorten, so that the sprayer 30 is opposite to the ground to be sprayed with concrete, and accurate construction can be realized; simultaneously bellows 80's setting can increase the interval between shower nozzle 30 and the connecting pipe 502, also can further slow down the velocity of flow of concrete, also can further reduction concrete's rebound resilience rate.

After the corrugated pipe 80 is used for a long time, the first thread 801 and the third thread 512 are disassembled, and the second thread 802 and the fourth thread 301 are disassembled, so that the corrugated pipe 80 can be disassembled, the corrugated pipe 80 can be cleaned or replaced in time, and the corrugated pipe 80 is convenient to install again.

When the corrugated pipe 80 is not needed in the using scene, the corrugated pipe 80 between the spray head 30 and the connecting pipe 502 can be detached, and then the third thread 512 on the connecting pipe 502 is meshed with the fourth thread 301 of the spray head 30, so that the spray head 30 and the connecting pipe 502 can be connected, and the adaptability of the whole concrete sprayer device can be effectively prompted.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (7)

1. The spiral concrete sprayer comprises a rack, a stirring hopper, a material pushing unit and a spray head which are sequentially connected and communicated, and is characterized by further comprising an accelerator adding unit, wherein the accelerator adding unit comprises an accelerator feeding box, a liquid adding controller and a feeding pipe which are sequentially connected and communicated, the material pushing unit comprises a material pushing pipe, and the feeding pipe is communicated with one end, close to the spray head, of the material pushing pipe; and an inwards concave guide groove is formed in the inner wall of the spray head.

2. The spiral concrete sprayer according to claim 1, wherein the material pushing pipe comprises a conveying pipe horizontally and fixedly installed on the frame and a connecting pipe in an "L" shape, an upper side of one end of the conveying pipe is communicated with the stirring hopper, a lower side of the other end of the conveying pipe is connected with an upper end of the connecting pipe, and the other end of the connecting pipe is communicated with the spray head; the feed pipe and the intercommunication of the vertical one end of connecting pipe, coaxial rotation installs stirring fan blade in the one end that the connecting pipe level set up.

3. The spiral concrete sprayer of claim 2, wherein a bellows is removably connected between the connecting tube and the spray head.

4. A spiral concrete sprayer according to claim 3, wherein one end of the bellows is provided with a first thread, the other end of the bellows is provided with a second thread, one end of the connection pipe adjacent to the bellows is provided with a third thread engageable with the first thread, one end of the nozzle adjacent to the bellows is provided with a fourth thread engageable with the second thread, and the third thread is engageable with the fourth thread.

5. The spiral concrete sprayer according to claim 4, wherein the guide channel is formed in a spiral shape, and the guide channel is coaxially provided on an inner wall of the nozzle head.

6. A spiral concrete sprayer according to claim 5, wherein a handle is fixedly mounted to an outer wall of said sprayer head.

7. The spiral concrete sprayer of claim 6, wherein the pusher unit further comprises a rotating shaft, a spiral blade coaxially and fixedly mounted on the rotating shaft, and a motor for driving the rotating shaft to rotate, the rotating shaft and the spiral blade are coaxially and rotatably disposed in the delivery pipe, the motor is fixedly mounted outside one end of the delivery pipe, and both ends of the rotating shaft, which are far away from the motor, are rotatably and hermetically connected with the end of the delivery pipe.

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