CN109798132A - A kind of concrete injection device and injection method - Google Patents
A kind of concrete injection device and injection method Download PDFInfo
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- CN109798132A CN109798132A CN201910063876.3A CN201910063876A CN109798132A CN 109798132 A CN109798132 A CN 109798132A CN 201910063876 A CN201910063876 A CN 201910063876A CN 109798132 A CN109798132 A CN 109798132A
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- accelerator
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- atomizer
- screw rod
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Abstract
This application discloses a kind of concrete injection device and injection method, injection apparatus includes: spraying machine；Nozzle comprising two input ports, one of input port are connected to spraying machine, another input port is connected to accelerator supply arrangement；Accelerator supply arrangement further comprises: shell, and side-walls are equipped with the material sucking port to adding liquid accelerator, and one end of shell is equipped with discharge port, the Inner Constitution seal chamber of shell；Self-priming screw rod is set to the inside of shell, to suck liquid accelerator from material sucking port and be discharged from discharge outlet；Driving device is set to the other end of shell, and the output shaft of driving device is connect with the rod end of self-priming screw rod, and the revolving speed of driving device control self-priming screw rod is to control the flow of liquid accelerator；Atomizer, to mix accelerator with concrete mix with spray pattern；Liquid accelerator is discharged from discharge port, mixes at nozzle with concrete mix after the atomizing by atomizer.
Description
Technical field
The present disclosure relates generally to underground construction machinery technical fields, and in particular to a kind of concrete injection device and injection side
Method.
Background technique
Concrete-spraying technology is widely used in the surrounding rock of chamber surface supporting of the underground engineerings such as tunnel, subway, mine,
It is one of the three big support technologies of tunnel New Austrian Tunneling Method construction.Gunite concrete can carry out supporting in the split room of digging a hole in time, and combine
Anchor pole, steel arch-shelf, steel mesh etc. form integer support structure, can effectively inhibit the deformation of country rock, bring guarantor to construction safety
Card.Wherein accelerator is the necessary additive of gunite concrete, and main function keeps concrete rapid hardening hard fastly, improves a spray-up thickness
Degree reduces rebound, is exactly the presence because of accelerator, has played gunite concrete in underground rock cavern supporting and answer
Play the role of.
Currently, domestic, there are mainly two types of shotcrete technologies, i.e. wet shot and tide spray.
Wet shotcreting technique is cement, stone, sand, water, water-reducing agent stir evenly in mixing station, pours into quotient and mixes vehicle
In be transported to construction site；Wet shotcreting uses liquid accelerator, and wet-mixing material is by wet-spraying machine, in high-pressure blast or pumping
It under pressure, is transported at nozzle via conveying pipeline, and liquid accelerator is added at nozzle, injection to country rock surface.Due to wet
The advantages such as the intensity of pneumatically placed concrete is high, rebound is small, dust is small, application is more and more extensive, becomes main spray regime.
Half wet shotcreting technique is cement, stone, sand, a small amount of water stir evenly in mixing station, and it is existing to be transported to injection
?；Dry spraying machine is added by artificial or feeder using powder accelerator in half wet shotcreting together with concrete mix
In, under the action of high-pressure blast, mixture is transported at nozzle via conveying pipeline, and adds water at nozzle, injection to country rock table
Face.
Existing above-mentioned shotcrete technology, there are the controls of the volume of accelerator inaccurately, unevenness is mixed with concrete
Even problem, causes gunite concrete largely to fall off, and brings hidden danger to engineering safety.
In addition, liquid accelerator is mainly used in wet shotcreting in shotcrete technology, and tide can not be applied to
In pneumatically placed concrete.During wet shotcreting, it is added by the metering pump in wet-spraying machine.Currently, liquid accelerator is deposited
Volume control it is inaccurate, mix the problems such as uneven with concrete material, cause wet shotcreting largely to fall off, seriously affect
Construction efficiency brings hidden danger to engineering safety.
Summary of the invention
In view of drawbacks described above in the prior art or deficiency, being intended to provide a kind of can be improved the mixed of concrete ejection quality
Solidifying soil ejection schemes.
In a first aspect, the embodiment of the present application provides a kind of concrete injection device, comprising:
Spraying machine；
Nozzle comprising two input ports, one of them described input port are connected to the spraying machine, another institute
Input port is stated to be connected to accelerator supply arrangement；
The accelerator supply arrangement further comprises:
Shell, side-walls are equipped with the material sucking port to adding liquid accelerator, and one end of the shell is equipped with discharge port,
The Inner Constitution seal chamber of the shell；
Self-priming screw rod is set to the inside of the shell, to suck the liquid accelerator from the material sucking port,
And it is discharged from the discharge outlet；
Driving device is set to the other end of the shell, the output shaft of the driving device and the self-priming screw rod
Rod end connection, the driving device control the revolving speed of the self-priming screw rod to control the flow of the liquid accelerator；
Atomizer, to mix the accelerator with concrete mix with spray pattern；
The liquid accelerator is discharged from the discharge port, by after the atomizing of the atomizer at the nozzle
It is mixed with concrete mix.
In some embodiments of the application, the driving device further includes speed reducer, the output shaft of the speed reducer with
The rod end of the self-priming screw rod connects.
Further, the driving device further includes motor, and the input shaft of the speed reducer and the motor output shaft connect
It connects.
In some embodiments of the application, the accelerator supply arrangement further includes controller, the controller and institute
Speed reducer connection is stated, the revolving speed of the self-priming screw rod is controlled by adjusting the transmission ratio of the speed reducer, and then described in control
Drive screw rod to the output flow of liquid material.
In some embodiments of the application, the controller includes the display device to show Liquid output stream amount.
By digital display controller, the flow of accelerator can be shown, over the display in order to clear view and liquid with precise control rapid hardening
The volume of agent.
In other embodiments of the application, the driving device is control motor, the output shaft of the control motor
It is directly connect with the rod end of the self-priming screw rod, the controller is set in the control motor.
The spraying machine is connected to compressed air line.
The discharge port is connected to by accelerator pipeline with the inlet of the atomizer, the atomizing nozzle of the atomizer and
Another described described input port connection.
Further include water pipe branch, the water pipe branch after the discharge port, before the inlet of the atomizer
It is communicated in the accelerator pipeline.Specifically, water pipe branch can be connected in the pipeline by tee tube, described three
One input port of siphunculus is connect with the discharge port, another input port of the tee tube is connect with water pipe, described
The output port of tee tube is connect with the atomizer.The injection apparatus of water pipe branch is set, it can be by liquid accelerator application
Into half wet shotcreting technique.By the setting of tee tube, liquid accelerator and water are atomized in atomizer, can be subtracted significantly
The hydration process time of few liquid accelerator and water, to make it possible for liquid accelerator to be applied in dry pressure spray process.
Second aspect, the embodiment of the present application provide a kind of concrete injection method, comprising the following steps:
Liquid accelerator is provided using the weight feed equipment of accelerator come quantitative；
The liquid accelerator is atomized using atomizer；
The liquid accelerator after atomization is mixed with dry-mix concrete or wet shotcreting to be sprayed, and is sprayed
Penetrate operation.
Liquid accelerator can be applied to half wet shotcreting and wet shot by concrete injection device provided by the embodiments of the present application
In concrete.Using liquid accelerator and spraying function, can make accelerator under spray pattern with the rapid water of concrete mix
Change reaction, improves condensation effect.
Relative to wet shot, atomising device mixes liquid accelerator with concrete material sufficiently, reduction hydration time, and with
Concrete material is uniformly mixed, and while playing the effect significantly quickly mixed, weight feed equipment can be more accurate
The volume for controlling liquid accelerator, to avoid the problem that wet shotcreting caused by traditional wet shot operation largely falls off, greatly
It is big to improve construction efficiency, substantially reduce the security risk of engineering.
It, can be by liquid accelerator by the way that liquid accelerator to be atomized relative to powder accelerator used by moist spurting craft
It is applied to dry shotcreting technique.When can reduce the hydration process with water using liquid accelerator in dry shotcreting
Between, it can be very good volume when control field application, avoid generating a large amount of dust, so that conventional dry be avoided to spray operation when institute
The disadvantage that the concrete strength decaying encountered is serious, discreteness is big.
The equipment is not necessarily to improve for existing injection apparatus, can be realized to the quick accurate of liquid accelerator
Atomized spray, while making full use of existing injection apparatus, by the lower cost of manufacture of weight feed equipment, Ji Ke great
It is big to improve jet quality and spray environment, it is environmentally protective.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 shows the structure schematic diagram of liquid accelerator weight feed equipment in the embodiment of the present application；
Fig. 2 shows the wet shotcreting process flow charts that the equipment is used in the embodiment of the present application；
Fig. 3 shows the half wet shotcreting process flow chart that the equipment is used in the embodiment of the present application；
Component label instructions
1 motor
2 speed reducers
3 digital display controllers
4 material sucking ports
5 shells
6 discharge ports
7 atomizers
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment is
A part of the invention is instead of all the embodiments.For ease of description, part relevant to invention is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the embodiment of the present invention for usually describing and showing in this figure
Component can arrange and design with a variety of different configurations.It is understood that specific embodiment described herein is only
It is only used for explaining related invention, rather than the restriction to the invention.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, belong to " setting ",
" connection " should broadly understood, for example, it may be being fixedly connected, may be a detachable connection, or the connection of one；It can be
Mechanical connection, is also possible to be electrically connected；It can be and be directly connected to, can also be indirectly connected with by intermediary, can be two
Connection inside element.For the ordinary skill in the art, can regard concrete condition understands above-mentioned term in this hair
Concrete meaning in bright.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Whole description.
As shown in Figure 1, the embodiment of the present application provides a kind of injection apparatus of liquid accelerator, which includes spray
Penetrate machine, nozzle, weight feed equipment and atomizer.The pipeline connection of spraying machine and offer compressed air, the nozzle packet of spraying machine
Two input ports are included, one of input port is connected to spraying machine, another input port and the weight feed of nozzle are set
The atomizing nozzle connection of atomizer in standby.
Weight feed equipment includes: motor 1, speed reducer 2, digital display controller 3, shell 5 and self-priming screw rod.
The side-walls of shell are equipped with the material sucking port 4 to adding liquid accelerator, and one end of shell is equipped with discharge port 6, shell
The Inner Constitution seal chamber of body.Self-priming screw rod is set to the inside of shell 5, to suck liquid accelerator from material sucking port, simultaneously
It is discharged from discharge outlet.Motor is set to the other end of shell, the output shaft of motor and the input shaft of speed reducer as driving device
Connection, the output shaft of speed reducer are connect with the rod end of self-priming screw rod.Speed reducer is equipped with digital display controller, and digital display controller can be with
The revolving speed (i.e. the revolving speed of self-priming screw rod) for adjusting the gearratio control speed reducer output shaft of speed reducer, to control the output of liquid material
Flow.It is understood that shell, self-priming screw rod, motor, speed reducer and digital display controller together constitute screw pump, table 1 shows
Screw pump flow parameter is gone out.
1 screw pump flow parameter of table
| Aperture | Revolutions per minute | Every turn of tidal stream amount/ml | Minute | 1000 milliliters | Discharge-amount/ml per hour |
| 0 | 30 | 9 | 60 | 0.001 | 16.2 |
| 0.5 | 40 | 9 | 60 | 0.001 | 21.6 |
| 1 | 50 | 9 | 60 | 0.001 | 27 |
| 1.5 | 60 | 9 | 60 | 0.001 | 32.4 |
| 2 | 70 | 9 | 60 | 0.001 | 37.8 |
| 2.5 | 80 | 9 | 60 | 0.001 | 43.2 |
| 3 | 90 | 9 | 60 | 0.001 | 48.6 |
| 3.5 | 100 | 9 | 60 | 0.001 | 54 |
| 4 | 110 | 9 | 60 | 0.001 | 59.4 |
As can be seen that by the revolution of digital display controller adjusting screw rod, and then can control the flow of liquid accelerator.
The discharge port of shell is equipped with interface connector, and can according to need connecting line.When using wet shot, interface connects
Fitting is directly connected to the inlet of atomizer；When using wet shotcreting method, interface connector is first connected to tee tube, tee tube
Another input port is connect with water pipe, and the output port of tee tube is connected to atomizer.Liquid accelerator from discharge port be discharged,
By being mixed at nozzle with concrete mix after the atomizing of atomizer.
Motor mainly provides power, and speed reducer reduces the revolving speed of motor, and digital display controller controls the volume of liquid accelerator,
Self-priming screw conveyer liquid accelerator, atomizer make liquid accelerator carry out different atomizing effects.
Be understood that when, for directly can accurately control the control motor of self-priming screw speed, even if not slowing down
Machine and digital display controller, because it is still able to achieve the control to self-priming screw rod and then controls the flow of liquid accelerator, still
Within the scope of protection of this application.
It specifically can be that liquid accelerator accesses feed inlet 4 by hose from charging basket, start motor 1, speed reducer 2
It is connected with motor 1, digital display controller is connected with speed reducer 2, the revolving speed of screw rod can be controlled together with speed reducer 2, to control
The flow of liquid accelerator, liquid accelerator transport in screw rod, enter in atomizer 7 via discharge port 6, by liquid accelerator
Atomization, whole equipment provide pressure by liquid accelerator be pressed into nozzle at, be sufficiently mixed with concrete mix, injection to by
Spray plane, to complete the transmission process of entire liquid accelerator.
The discharge port of shell is directly and atomizer when wherein, using wet shotcreting process flow, in weight feed equipment
Connection.Wet shotcreting process flow mixes vehicle with quotient and transports as shown in Fig. 2, cement, stone, sand, water are mixed and stirred in mixing plant
It to construction site, pours into spraying machine, the liquid accelerator after the atomization provided by weight feed equipment is added at nozzle, mist
Liquid accelerator and concrete mix after change are quickly sufficiently mixed at nozzle, can be injected directly to by spray plane.
The embodiment of the present application is also applied to half wet shotcreting.
Traditional half wet shotcreting mainly applies powder accelerator, generally passes through screw feeding machine or is manually added
Add.Since powder accelerator and concrete mix aquation need the regular hour, volume is excessive when field application, and produces
Raw a large amount of dust, causing concrete strength to decay, serious, discreteness is big.
When the embodiment of the present application uses half wet shotcreting process flow, the discharge port elder generation and three of shell in weight feed equipment
Siphunculus connection, another input port of tee tube are connect with water pipe, and the output port of tee tube is connected to atomizer.Tide spray is mixed
Earth process process is coagulated as shown in figure 3, cement, stone, sand and a small amount of water, mix in mixing plant, be transported to and applied with dump truck
Mix is put into spraying machine by work scene by feeder or manually, and liquid accelerator passes through the weight feed equipment and enters
It in high-pressure water pipe, is transported at nozzle together with water, atomizer is equipped at nozzle, is atomized mixed liquor sufficiently, with concrete material
Mixing, injection is to by spray plane.
Relative to dry spray powder accelerator, the aquation mistake with water can be reduced using liquid accelerator in dry shotcreting
The journey time can be very good volume when control field application, avoid generating a large amount of dust, so that conventional dry be avoided to spray operation
When the concrete strength decaying that is encountered is serious, discreteness is big disadvantage.Liquid accelerator is applied in half wet shotcreting, energy
Rebound and the dust of half wet shotcreting are substantially reduced, sprayed concrete strength is improved.Traditional dry shotcreting springback capacity is generally
25%~40%, dust concentration is 1120~1470mg/m3；Using the technique of the device, springback capacity is 8%~15%, dust
Concentration is 76~135mg/m3, and can greatly reduce the slump of wet shotcreting.
Equipment provided by the embodiments of the present application has seal chamber since it is internal, can generate vacuum under screw rod rotation, because
This is with self-suction function.By digital display controller, the volume of energy liquid with precise control accelerator, and speed can be shown over the display
The flow of solidifying agent, in order to clear view and timely adjustment liquid accelerator volume.Atomizer can be dismantled at any time, wherein containing
Dynamic element can carry out different degrees of atomizing effect to liquid accelerator, be conducive to liquid accelerator and mix with concrete
It closes material to be sufficiently mixed, to improve the performance of gunite concrete.
Liquid accelerator weight feed equipment through the invention realizes and uses liquid in tide spray and wet shotcreting
Accelerator, and the volume of the equipment energy liquid with precise control accelerator, and liquid accelerator can be atomized, so that with mixed
The mixing of solidifying soil mix is more uniform, to improve the performance of gunite concrete.
The above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (10)
1. a kind of concrete injection device characterized by comprising
Spraying machine；
Nozzle comprising two input ports, one of them described input port are connected to the spraying machine, another is described defeated
Inbound port is connected to accelerator supply arrangement；
The accelerator supply arrangement further comprises:
Shell, side-walls are equipped with the material sucking port to adding liquid accelerator, and one end of the shell is equipped with discharge port, described
The Inner Constitution seal chamber of shell；
Self-priming screw rod, be set to the shell inside, to the liquid accelerator is sucked from the material sucking port and from
The discharge outlet discharge；
Driving device is set to the other end of the shell, the rod end of the output shaft of the driving device and the self-priming screw rod
Connection, the driving device control the revolving speed of the self-priming screw rod to control the flow of the liquid accelerator；
Atomizer, to mix the accelerator with concrete mix with spray pattern；
The liquid accelerator is discharged, by the nozzle and mixed after the atomizing of the atomizer from the discharge port
Solidifying soil mix mixing.
2. a kind of concrete injection device according to claim 1, which is characterized in that the driving device further includes slowing down
Machine, the output shaft of the speed reducer are connect with the rod end of the self-priming screw rod.
3. a kind of concrete injection device according to claim 2, which is characterized in that the driving device further includes electricity
Machine, the output axis connection of the input shaft of the speed reducer and the motor.
4. a kind of concrete injection device according to claim 2, which is characterized in that the accelerator supply arrangement also wraps
Controller is included, the controller is connect with the speed reducer, controls the self-priming by adjusting the transmission ratio of the speed reducer
The revolving speed of screw rod.
5. a kind of concrete injection device according to claim 4, which is characterized in that the controller includes to show
The display device of Liquid output stream amount.
6. a kind of concrete injection device according to claim 1, which is characterized in that the driving device is control electricity
The output shaft of machine, the control motor is directly connect with the rod end of the self-priming screw rod.
7. a kind of concrete injection device according to claim 1, which is characterized in that the spraying machine and compressed air hose
Road connection.
8. -7 any a kind of concrete injection device according to claim 1, which is characterized in that the discharge port passes through speed
Solidifying agent pipeline is connected to the inlet of the atomizer, the atomizing nozzle of the atomizer and another described described input port
Connection.
9. a kind of concrete injection device according to claim 8, which is characterized in that further include water pipe branch, the water
Pipe branch is communicated in the accelerator pipeline after the discharge port, before the inlet of the atomizer.
10. a kind of concrete injection method, which comprises the following steps:
Liquid accelerator is provided using the weight feed equipment of accelerator come quantitative；
The liquid accelerator is atomized using atomizer；
The liquid accelerator after atomization is mixed with dry-mix concrete or wet shotcreting to be sprayed, and carries out injection work
Industry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063876.3A CN109798132A (en) | 2019-01-23 | 2019-01-23 | A kind of concrete injection device and injection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063876.3A CN109798132A (en) | 2019-01-23 | 2019-01-23 | A kind of concrete injection device and injection method |
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| Publication Number | Publication Date |
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| CN109798132A true CN109798132A (en) | 2019-05-24 |
Family
ID=66560016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910063876.3A Pending CN109798132A (en) | 2019-01-23 | 2019-01-23 | A kind of concrete injection device and injection method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635373A (en) * | 2012-04-24 | 2012-08-15 | 山东大学 | High-pressure hydraulic injection system |
| CN103821148A (en) * | 2014-02-25 | 2014-05-28 | 山东大学 | Sealed type continuous double water adding wet shotcreting system |
| CN204098931U (en) * | 2014-07-31 | 2015-01-14 | 泰安市新亚特混凝土外加剂有限公司 | For the quantitative output device of the liquid accelerating agent of dry shotcreting injection apparatus |
| CN209780911U (en) * | 2019-01-23 | 2019-12-13 | 齐鲁交通发展集团有限公司 | Concrete injection device |
-
2019
- 2019-01-23 CN CN201910063876.3A patent/CN109798132A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635373A (en) * | 2012-04-24 | 2012-08-15 | 山东大学 | High-pressure hydraulic injection system |
| CN103821148A (en) * | 2014-02-25 | 2014-05-28 | 山东大学 | Sealed type continuous double water adding wet shotcreting system |
| CN204098931U (en) * | 2014-07-31 | 2015-01-14 | 泰安市新亚特混凝土外加剂有限公司 | For the quantitative output device of the liquid accelerating agent of dry shotcreting injection apparatus |
| CN209780911U (en) * | 2019-01-23 | 2019-12-13 | 齐鲁交通发展集团有限公司 | Concrete injection device |
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Effective date of registration: 20200904 Address after: No.8, Longao North Road, Lixia District, Jinan City, Shandong Province Applicant after: Shandong high speed Group Co.,Ltd. Applicant after: SHANDONG University Address before: 250013 Block D, Yinfeng Fortune Plaza, Austrian West Road, Jinan City, Shandong Province Applicant before: QILU TRANSPORTATION DEVELOPMENT GROUP Co.,Ltd. Applicant before: SHANDONG University |