CN105065034B - Full-hydraulic concrete wet spraying unit and working method thereof - Google Patents

Abstract

The present invention discloses a fully hydraulic concrete wet spraying unit and a working method thereof, which is mainly composed of a pulping machine, a storage bin, a hydraulic cylinder, a screw pump, a rotor-type spraying machine, and a frame. The pulping machine, the storage bin, and the rotor-type spraying machine are all driven by a hydraulic motor, and the pulping machine and the storage bin are connected by a hydraulic cylinder. The storage bin receives cement slurry prepared by the pulping machine through the telescopic action of the hydraulic cylinder, and pumps the cement slurry to the vicinity of the wet spraying working surface through the screw pump. At the same time, the rotor-type spraying machine transports dry materials such as sand and gravel to the vicinity of the wet spraying working surface. The cement slurry and dry materials such as sand and gravel are combined through a three-way pipe joint and sprayed to the wet spraying working surface by a nozzle. The present invention combines pumping technology with pneumatic conveying and spraying technology, and adopts a fully hydraulic system drive control, which has the advantages of compact structure, convenient control, high conveying efficiency, not easy to block pipes, and small amount of dust.

Description

A fully hydraulic concrete wet spraying unit and its working method

technical field

The invention relates to a concrete wet spraying unit used in roadway support, coal mine post-mining filling, road construction and other fields, and relates to a fully hydraulic concrete wet spraying unit.

Background technique

The existing concrete dry spraying machine mixes dry materials such as cement and sand in a certain proportion and then pneumatically transports them to the nozzle. Water is added to the nozzle to wet the dry material and then sprayed to the working surface. The amount of water added is determined by the nozzle at the nozzle. Valve adjustment, which has caused the difficulty of controlling the water-cement ratio, and the dry spraying effect is poor, the amount of dust is large, and the rebound rate is high. It causes serious pollution to the environment and wastes a lot of concrete resources. The appearance of concrete wet spraying machine overcomes the shortcomings of dry spraying machine to a large extent. It transports the prepared wet material to the nozzle and sprays it, with less dust and low rebound rate. It takes more power, and wet materials are easy to cause pipe blockage. After each wet spraying operation, the pipeline must be cleaned in time. At the same time, the wet spraying machine uses expensive liquid accelerator, which increases the construction cost.

Contents of the invention

Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a fully hydraulic concrete wet spraying unit and its working method, which has the advantages of compact structure, convenient control, high conveying efficiency, not easy to block pipes, and small amount of dust, etc. .

Technical scheme: in order to achieve the above object, the technical scheme adopted in the present invention is:

A fully hydraulic concrete wet spraying unit, including a pulper, a storage bin, a rotor jetting machine, a screw pump and a three-way pipe joint, the pulper is connected to the storage bin for feeding, and the storage bin It is connected with the screw pump feed, the cement slurry outlet of the screw pump is connected with the cement slurry inlet of the three-way pipe joint, and the sand and stone dry material outlet of the rotor jet machine is connected with the three-way pipe joint. The sand and gravel dry material inlet is connected, and the concrete outlet of the three-way pipe joint is connected with a sprinkler.

Further, the pulping machine includes a stirring shaft 1, a spray dedusting system, pin 1 and pin 2, the agitating shaft 1 is set in the pulping machine and driven by a hydraulic motor 1, and the spray dedusting system is set above the stirring shaft one; the pulper is hinged to the frame through the pin one, and the pulper is driven and connected to the hydraulic cylinder through the pin two, and the hydraulic cylinder performs an elongation action to drive the pulper around As soon as the pin shaft dumps the cement slurry to the storage bin, the hydraulic cylinder retracts to drive the pulping machine around the pin shaft to restore the initial position.

Further, the storage bin includes the second stirring shaft, which is driven by the second hydraulic motor; the rotor jet machine is driven by the third hydraulic motor.

Further, the first hydraulic motor, the second hydraulic motor, the hydraulic cylinder and the third hydraulic motor are all powered by a triple pump assembly driven by a motor, hydraulic oil is provided by an oil tank, and action commands are provided by a hydraulic valve group.

Further, the outlet of the three-way pipe joint is provided with a helical mixing blade, and the span of the helical mixing blade inside the three-way pipe joint is twice the pitch, and the material is evenly mixed under the rotation of the helical mixing blade and then transferred to nozzle.

Further, the inner diameter ratio of the cement slurry inlet connected to the three-way pipe joint to the sand and gravel dry material inlet is 3:5, and the axis between the cement slurry inlet and the sand and gravel dry material inlet The angle is 40-60 degrees.

Further, the front end of the nozzle is provided with an auxiliary air intake device, and the auxiliary air intake device is composed of several air intake pipes, and each air intake pipe is arranged around the axial and tangential angles of the pipeline at this place, and each air intake pipe Connect to air pump supply.

Further, the cement slurry outlet is connected to the cement slurry inlet through a thin hose, and the sand and gravel dry material outlet is connected to the sand and gravel dry material inlet through a thick hose.

A working method of a fully hydraulic concrete wet spraying unit:

Step 1: Start the motor, and the motor drives the triple pump assembly to provide power for the pulper, storage bin, and rotor jet to enter the working state;

Step 2: Pour cement ash and water into the pulping machine, the hydraulic motor drives the stirring shaft to rotate, mix the cement ash and water evenly to make cement slurry, and control the hydraulic valve group so that the movable cylinder of the hydraulic cylinder pushes the pin shaft The second movement, the pulping machine turns around the pin shaft to the direction of the storage bin under the promotion of the hydraulic cylinder, so as to pour the prepared cement slurry into the storage bin;

Step 3: The storage bin stores the cement slurry from the pulping machine, and sends the cement slurry to the screw pump evenly according to the set flow rate, during which the second stirring shaft is driven by the second hydraulic motor to continuously stir the cement slurry to prevent it solidification;

Step 4: The screw pump pumps the cement slurry through the cement slurry outlet to the cement slurry inlet connected by the three-way pipe joint near the working face, and at the same time, the rotor jet machine drives the dry sand and gravel through the sand under the three-way drive of the hydraulic motor. The dry stone material outlet is transported to the sand and gravel dry material inlet connected by the three-way pipe joint. The three-way pipe joint mixes the cement slurry and the dry sand and gravel material evenly, and then transports it to the nozzle for a short distance and sprays it to the wet spraying working surface. The dry gravel material includes gravel and quick-setting agent powder. .

Further, the transportation between the screw pump and the rotor jet machine and the three-way pipe joint is long-distance transportation, and the transportation between the three-way pipe joint and the nozzle is short-distance transportation.

Beneficial effect: compared with prior art, the beneficial effect that the present invention has is:

1. Control the working parts of the wet spraying unit through the full hydraulic system, and replace the traditional multiple motors with the hydraulic system, so that the structure of the wet spraying unit is more compact and the control is more flexible.

2. Combine dry sand and gravel and cement slurry near the working surface through a three-way pipe joint and then transport them to the wet spraying working surface, which can effectively improve the spraying effect, reduce the amount of dust and rebound rate, and reduce the pollution to the working environment .

3. The pneumatic conveying injection system conveys dry sand and gravel, and the pumping system conveys cement slurry. The combination of the two can effectively reduce the energy loss in the process of material conveying, and eliminate the problem of easy pipe blockage.

4. The quick-setting agent powder and sand are mixed at the source and pneumatically transported to the vicinity of the working surface, which prevents the traditional wet spraying machine from adding the accelerator at the source, which is easy to block the pipe, and adding the accelerator at the nozzle to spray unevenly. question.

5. The spiral mixing vane and auxiliary air intake device are added in front of the nozzle to convert the linear motion of the material along the bottom of the pipe into the spiral motion along the pipe wall, so that the material is more fully mixed, the conveying efficiency is higher, and the spraying effect is improved.

Description of drawings

Fig. 1 is the front view of a kind of fully hydraulic concrete wet spraying unit of the present invention;

Fig. 2 is a top view of a fully hydraulic concrete wet spraying unit of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, a fully hydraulic concrete wet spraying unit includes a pulper 1, a storage bin 2, a rotor jetting machine 3, a screw pump 6, a tee pipe joint 15 and a vehicle frame 22. The pulper 1 is arranged behind the storage bin 2 and is connected to the storage bin 2 for feeding. The storage bin 2 is connected to the screw pump 6 for feeding, and the cement slurry in the storage bin 2 is pumped by the screw pump 6. Pump to the vicinity of the wet spraying face. The three-way pipe joint 15 is arranged near the wet spraying work surface, and receives and mixes cement and sand and gravel dry materials. The specific receiving and mixing method: the cement slurry outlet 13 of the screw pump 6 and the three-way pipe joint 15 The cement slurry inlet 16 is connected, the sand and stone dry material outlet 14 of the rotor jet machine 3 is connected with the sand and gravel dry material inlet 17 of the three-way pipe joint 15, and the concrete of the three-way pipe joint 15 The discharge port is connected with a shower head 18. The cement slurry outlet 13 is connected to the cement slurry inlet 16 through a thin hose, and the sand and stone dry material outlet 14 is connected to the sand and gravel dry material inlet 17 through a thick hose. The vehicle frame 22 carries the main parts of the unit, and wheels are installed below the vehicle frame 22 to facilitate the movement of the unit.

The pulper 1 includes a stirring shaft one 1-1, a spray dust removal system 1-2, a pin one 1-3 and a pin two 1-4. The stirring shaft 1-1 is arranged in the pulping machine 1, and is driven by a hydraulic motor 9, and the spray dust removal system 1-2 is arranged above the stirring shaft 1-1, and the preparation operation of the cement slurry is carried out. Spray dust treatment. The pulp making machine 1 is hinged with the vehicle frame 22 through the pin one 1-3, and the pulp making machine 1 is driven and connected with the hydraulic cylinder 11 through the pin two 1-4, and the hydraulic cylinder 11 performs an elongation action to drive The pulping machine 1 dumps the cement slurry to the storage bin 2 around the pin shaft 1-3, and the hydraulic cylinder 11 retracts to drive the pulp making machine 1 around the pin shaft 1-3 to restore the initial position.

The storage bin 2 includes the second stirring shaft 2-1, which is driven by the second hydraulic motor 10 to prevent the cement slurry in the storage bin 2 from solidifying. The rotor jetting machine 3 is driven by a hydraulic motor 3 12, and the dry gravel material is conveyed pneumatically. The first hydraulic motor 9 , the second hydraulic motor 10 , the hydraulic cylinder 11 and the third hydraulic motor 12 are all powered by the triple pump assembly 5 driven by the motor 4 , hydraulic oil is provided by the oil tank 7 , and action commands are provided by the hydraulic valve group 8 .

Regarding the improvement of the three-way pipe joint 15, the outlet of the three-way pipe joint 15 is provided with a helical mixing blade 19, and the span of the helical mixing blade 19 inside the three-way pipe joint 15 is twice the pitch, and the cement slurry and The sand and gravel dry material is mixed evenly with the help of the spiral mixing blade 19, and its linear motion is converted into a spiral motion and transmitted to the nozzle 18. The double pitch length can not only ensure the uniform mixing of the material, the acquisition of the spiral motion, but also avoid energy consumption. excessive losses. The inner diameter ratio of the cement slurry inlet 16 connected to the three-way pipe joint 15 and the gravel dry material inlet 17 is 3:5, and this ratio makes the comprehensive delivery efficiency of the two materials reach the highest. The angle is 40-60 degrees, so that the mixing effect of the material in the tee pipe joint 15 is the best.

Regarding the improvement of the spray nozzle 18, the front end of the spray nozzle 18 is provided with an auxiliary air intake device 20, and the auxiliary air intake device 20 is composed of several air intake pipes, two in the present invention, and each air intake pipe is connected with the pipe shaft at this place. The horizontal and tangential angles are 30 degrees and 45 degrees respectively, and the air is supplied by the air pump near the working surface, which forms a spiral air flow to further accelerate the ejection of the material.

A working method of a fully hydraulic concrete wet spraying unit, the steps are as follows:

Step 1: start the motor 4, and the motor 4 drives the triple pump assembly 5 to provide power for the pulping machine 1, the storage bin 2, and the rotor jet machine 3 to enter the working state;

Step 2: Pour the cement ash and water into the pulping machine 1, the hydraulic motor 19 drives the stirring shaft 1-1 to rotate, mix the cement ash and water evenly to make cement slurry, and control the hydraulic valve group 8 to make the hydraulic cylinder 11 The movable cylinder pushes the pin shaft 1-4 to move, and the pulping machine 1 turns around the pin shaft 1-3 to the storage bin 2 under the push of the hydraulic cylinder 11, so as to pour the prepared cement slurry into Storage bin 2;

Step 3: The storage bin 2 stores the cement slurry from the pulping machine 1, and sends the cement slurry to the screw pump 6 evenly according to the set flow rate, during which the stirring shaft 2-1 is continuously driven by the hydraulic motor 2 10 The cement slurry is stirred to prevent it from setting;

Step 4: The screw pump 6 pumps the cement slurry through the cement slurry outlet 13 to the cement slurry inlet 16 connected to the three-way pipe joint 15 near the working surface, and the rotor jet machine 3 is driven by the hydraulic motor 3 12 at the same time. The dry gravel material is transported through the dry gravel material outlet 14 to the dry gravel material inlet 17 connected to the three-way pipe joint 15, and the three-way pipe joint 15 mixes the cement slurry and the dry sand and gravel material evenly and transports them in a short distance To the spray head 18 and spray to the wet spray working surface. The sand and gravel dry material involved in the present invention includes dry materials such as sand and quick-setting agent powder. Mixing and transporting the quick-setting agent powder and sand and gravel can not only make the quick-setting agent powder spread evenly, but also prevent the quick-setting agent from being trapped in the pipeline. Condensation plugging problem.

The transportation between the screw pump 6 and the rotor jet machine 3 and the three-way pipe joint 15 is long-distance transportation, and the transportation between the three-way pipe joint 15 and the nozzle 18 is short-distance transportation.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (2)

1. a kind of full hydraulic concrete spraying unit, it is characterised in that：Including pulper (1), storage bin (2), rotator type spray Machine (3), screw pump (6) and tee pipe coupling (15) are penetrated, the pulper (1) connects with storage bin (2) feed, the storage bin (2) connected with screw pump (6) feed, the cement mortar discharge port (13) of the screw pump (6) and the cement of tee pipe coupling (15) It starches feeding mouth (16) to connect, the sandstone siccative discharge port (14) of the rotor spraying machine (3) and the sand of tee pipe coupling (15) Stone siccative feeding mouth (17) connects, and the concrete discharge port of the tee pipe coupling (15) is connected with nozzle (18)；

The pulper (1) includes agitating shaft one (1-1), two (1- of atomizing dust-removing system (1-2), axis pin one (1-3) and axis pin 4), the agitating shaft one (1-1) is arranged in pulper (1), and is driven by hydraulic motor one (9), the atomizing dust-removing system (1-2) is arranged on the top of agitating shaft one (1-1)；The pulper (1) is hinged by axis pin one (1-3) and vehicle frame (22), institute It states pulper (1) to be drivingly connected by axis pin two (1-4) and hydraulic cylinder (11), the hydraulic cylinder (11) does elongation action, drives Pulper (1) topples over cement mortar to storage bin (2) around axis pin one (1-3), and hydraulic cylinder (11) does retract action, drives pulper (1) initial position is recovered around axis pin one (1-3)；

The storage bin (2) includes agitating shaft two (2-1), and the agitating shaft two (2-1) is driven by hydraulic motor two (10)；It is described Rotor spraying machine (3) is driven by hydraulic motor three (12)；

The hydraulic motor one (9), hydraulic motor two (10), hydraulic cylinder (11) and hydraulic motor three (12) are driven by motor (4) Dynamic treble pump component (5) provides power, and hydraulic oil is provided by fuel tank (7), and action command is provided by hydraulic valve bank (8)；

Tee pipe coupling (15) exit is provided with thread mixing blade (19), and the thread mixing blade (19) is in threeway The internal span of pipe fitting (15) is 2 times of screw pitch, and material is transported under thread mixing blade (19) rotation with spiral after mixing It is dynamic to be transmitted to nozzle (18)；

The cement mortar feeding mouth (16) of tee pipe coupling (15) connection and the internal diameter ratio of sandstone siccative feeding mouth (17) are 3: 5, and the axis angle between cement mortar feeding mouth (16) and sandstone siccative feeding mouth (17) is 40-60 degree；

Nozzle (18) front end is provided with auxiliary air intake device (20), and the auxiliary air intake device (20) is by several air inlet pipe Composition, every air inlet pipe and pipeline at this be axial, tangential angle is around setting, and every air inlet pipe is connected with air pump supply；

The cement mortar discharge port (13) is connected with cement mortar feeding mouth (16) by small hose, the sandstone siccative discharge port (14) it is connected with sandstone siccative feeding mouth (17) by thick flexible pipe；

The screw pump (6) and rotor spraying machine (3) arrive the conveying between tee pipe coupling (15) as long distance delivery respectively, The tee pipe coupling (15) is arrived the conveying between nozzle (18) and is conveyed for short distance.

2. a kind of method of work of full hydraulic concrete spraying unit, it is characterised in that：

Step 1：Start motor (4), motor (4) driving treble pump component (5) is pulper (1), the spray of storage bin (2), rotator type Machine (3) offer power is provided and makes it into working condition；

Step 2：Concrete grey and water are poured into pulper (1), hydraulic motor one (9) driving agitating shaft one (1-1) rotates, will Concrete grey stirs evenly with water and cement mortar is made, and manipulation hydraulic valve bank (8) makes the movable cylinder of hydraulic cylinder (11) push two (1- of axis pin 4) moving, pulper (1) is overturn under the impetus of hydraulic cylinder (11) around axis pin one (1-3) toward storage bin (2) direction, with The cement mortar prepared is poured into storage bin (2)；

Step 3：Cement mortar of storage bin (2) storage from pulper (1), and uniformly give cement mortar by the flow set Enter screw pump (6), agitating shaft two (2-1) is persistently stirred cement mortar to prevent under hydraulic motor two (10) driving therebetween It is solidified；

Step 4：Cement mortar is pumped to working face tee pipe coupling nearby by screw pump (6) by cement mortar discharge port (13) (15) the cement mortar feeding mouth (16) of connection, while rotor spraying machine (3) does sandstone under hydraulic motor three (12) driving Material is delivered to the sandstone siccative feeding mouth (17) of tee pipe coupling (15) connection, T joint by sandstone siccative discharge port (14) By cement mortar, short distance is delivered to nozzle (18) and is ejected into wet shot working face head (15) after mixing with sandstone siccative, described Sandstone siccative includes sandstone and accelerator powder.