CN205997178U - A kind of lightweight aggregate cement concrete mixing device - Google Patents

Abstract

The utility model relates to a lightweight aggregate cement concrete mixing device. The lightweight aggregate cement concrete mixing device includes a cement feeding mechanism, a cement pulping mechanism and a lightweight aggregate mixing mechanism connected in sequence. The cement pulping mechanism, light weight The stirring speed of the aggregate mixing mechanism decreases sequentially. The lightweight aggregate cement concrete mixing device also includes a concrete continuous mixing mechanism, which is connected with the lightweight aggregate mixing mechanism, and the stirring speed of the concrete continuous mixing mechanism is lower than that of the light aggregate mixing mechanism. The utility model overcomes the shortcomings of the existing lightweight aggregate cement concrete mixing equipment that adopting a single type of mixer is easy to cause cement agglomeration, light aggregate breakage and uneven mixing with cement, and has the ability to prevent cement from agglomerating and light aggregate The advantages of crushing, light aggregate and cement mixing evenly.

Description

A lightweight aggregate cement concrete mixing device

technical field

The utility model relates to a light aggregate cement concrete mixing device.

Background technique

With the development of construction technology, various types of lightweight aggregate cement concrete are widely used. However, most of the existing lightweight aggregate cement concrete mixing equipment uses a single mixer, which is not only difficult to fully complete the flocculation and mixing process of cement, but also because the lightweight aggregate cement concrete uses fine aggregates and lacks hard coarse aggregates, mixing The process cannot fully complete the uniform mixing of cement slurry and lightweight aggregate. Therefore, a lightweight aggregate cement concrete mixing device that is composed of various types of combined devices with different mixing and mixing speeds is provided, which can prevent the cement from agglomerating during the mixing process and after the preparation is completed, and the light aggregate is uniformly dispersed and the particles are complete. has become a top priority.

Utility model content

In order to overcome the shortcomings of existing lightweight aggregate cement concrete mixing equipment that adopting a single type of mixer is easy to cause cement agglomeration, light aggregate breakage and uneven mixing with cement, the utility model provides a combination of multiple types of mixing devices and mixing The lightweight aggregate cement concrete mixing device whose mixing speed decreases and changes in turn has the advantages of making the cement not agglomerated, the lightweight aggregate not broken, and the lightweight aggregate and cement mixed evenly.

The technical scheme of the utility model is as follows:

A lightweight aggregate cement concrete mixing device, the lightweight aggregate cement concrete mixing device includes a cement feeding mechanism, a cement slurry making mechanism and a lightweight aggregate mixing mechanism connected in sequence, the cement slurry making mechanism, lightweight aggregate mixing mechanism The stirring speed is decreased successively.

The lightweight aggregate cement concrete mixing device of the present application decomposes the traditional one-step mixing process of each material into two mixing mechanisms (that is, the combination of the cement slurry making mechanism and the lightweight aggregate mixing mechanism) with different types and successively reduced stirring speeds. Independent mixing stage. First use the cement slurry making mechanism to complete the mixing and slurrying process of cement and water at a higher mixing speed, which can make the cement slurry uniform and non-agglomerating. Then mix the well-mixed cement slurry and light aggregate through the mixing speed The lightweight aggregate mixing mechanism is lower than the cement pulping mechanism, which not only overcomes the uneven mixing caused by the lack of sufficient shear force in the mixing and stirring of lightweight aggregate and cement, and the cement powder is prone to shell-making effect and cannot It is difficult to fully play its role, and the integrity of the lightweight aggregate particles is ensured through the lower stirring speed, which can make the lightweight aggregate with small weight and easy to float on the surface of the cement slurry mix well with the cement slurry.

The lightweight aggregate cement concrete mixing device also includes a concrete continuous mixing mechanism, which is connected with the lightweight aggregate mixing mechanism, and the stirring speed of the concrete continuous mixing mechanism is lower than that of the light aggregate mixing mechanism.

After the preparation of lightweight aggregate concrete is completed, the mixed lightweight aggregate concrete is continuously mixed with the concrete continuous mixing mechanism with a lower stirring speed of the lighter aggregate mixing mechanism, which effectively avoids the process of cement slurry being stored and transported into the mold. Segregation occurs.

The cement pulping mechanism is a cement pulping mechanism with a stirring speed of 800-1000rpm, the light aggregate mixing mechanism is a light aggregate mixing mechanism with a stirring speed of 15-22rpm, and the concrete continuous mixing mechanism is a stirring speed of 10-15rpm. Concrete continuous mixing mechanism.

The cement slurry making mechanism adopts high-speed mixing to be suitable for the preparation of cement slurry, so that the cement slurry is mixed evenly and does not agglomerate. During the mixing process of lightweight aggregate concrete with low water-cement ratio, it is easy to cause the cement slurry to agglomerate, and it is difficult to fully complete the flocculation process of cement, which seriously affects the quality of the product. In addition, because the light aggregate is fragile and easy to float, the traditional mixing method cannot effectively impact the viscous surface formed by the cement powder when it meets water. There is no traditional mixer blade to stir the hard coarse and fine aggregate and then impact and cut the cement. The slurry achieves the effect of fully mixing the cement slurry. Therefore, the cement slurry mixing mechanism of the present application is relatively high-speed stirring and the light-weight aggregate mixing mechanism is medium-speed stirring, which can avoid cement agglomeration and breaking of light-weight aggregates, and is conducive to improving the quality of light-weight aggregate concrete products. High efficiency, lower equipment cost than traditional mixing plants. The concrete continuous mixing mechanism adopts low-speed mixing, which can effectively avoid the segregation of concrete, ensure its best mixing state, and help the lightweight aggregate particles to remain intact.

The cement feeding mechanism includes a cement storage bin and a feeding bin, and the discharge port of the cement storage bin is connected with the feeding port of the feeding bin; the cement slurry making mechanism includes a slurry mixer and a water injector, and the discharging port of the feeding bin The outlets of the mixer and the water injector are respectively connected to the inlet of the mixer; the light aggregate mixing mechanism includes the aggregate bin and the mixer, and the outlet of the mixer and the outlet of the aggregate bin are respectively connected to the inlet of the mixer. The feed port is connected; the concrete continuous mixing mechanism includes a continuous mixer, and the discharge port of the mixer is connected with the feed port of the continuous mixer.

The mixer is preferably a basin-shaped mixer with a large body diameter and a low height. The mixer with the characteristics of a low shape and a low height can avoid the segregation of the lightweight aggregate cement concrete and prevent its precipitation. The crushing of aggregate particles, at the same time, the large diameter of the shape can be equipped with multiple longer mixing blades to increase the shear rate and shear times. In addition, this type of mixer can also play the role of material storage. The discharge port of the continuous mixer can be connected with the concrete conveying mechanism through a screw pump, and the motor of the screw pump is connected with the mixing control device. The screw pump may include a bottom material screw pump and a fabric screw pump. The bottom material screw pump and the surface screw pump are used together to make the concrete discharge evenly. The discharge port of the mixer and the continuous mixer can be set at the bottom or side wall of itself, and the side discharge port and the bottom discharge port are used to avoid the storage of large bulk density mixing materials at the bottom, which can improve the uniformity of the volume density of the mixture .

The cement pulping mechanism also includes a water supply solenoid valve and a slurry feeding solenoid valve; the water supply solenoid valve can control the water supply of the water injector, and the water supply solenoid valve is arranged at the outlet of the water injector; the slurry feeding solenoid valve It is installed at the outlet of the mixing machine to control the feeding amount of the slurry of the mixing machine. The feeding screw conveying mechanism is provided at the discharging device of the feeding bin, and the feeding screw conveying mechanism can control the feeding amount of cement in the feeding bin. ;

The lightweight aggregate mixing mechanism also includes an aggregate feeding device for controlling the amount of aggregate feeding, and the aggregate feeding device is respectively connected to the discharge port of the aggregate bin and the feed port of the mixer;

The lightweight aggregate cement concrete mixing device also includes a mixing control device, the motor of the feeding screw conveying mechanism, the water supply solenoid valve, the slurry feeding solenoid valve, the motor of the slurry mixer, the motor of the mixer, and the motor of the continuous mixer. Connect with the mixing control device respectively.

The setting of the feeding screw conveying mechanism, the water supply solenoid valve, the slurry feeding solenoid valve and the aggregate feeding device make the cement and water feeding amount and feeding speed, When deploying lightweight aggregate concrete, the dosage and feeding speed of cement slurry and lightweight aggregate can be precisely controlled, so that the prepared lightweight aggregate concrete can meet the required quality standards, ensuring mass production of lightweight aggregate concrete quality stability. At the same time, a unified mixing control device is adopted to realize the automatic precise control and automatic control operation of the lightweight aggregate cement concrete mixing device.

The slurry mixer includes a slurry mixing tank, a motor, a transmission mechanism, a main shaft and a mud pumping device. The mud pumping device includes an impeller, a spray pipe and a discharge pipe. There is an opening located on the side of the impeller and connected to the discharge pipe arranged outside the mixing tank to push the cement slurry into the discharge pipe. The injection pipe is connected to the side wall of the discharge pipe and extends from bottom to top. It extends along the side wall of the mixing tank to the upper part of the inner cavity of the mixing tank; the main shaft extends into the inner cavity of the mixing tank from top to bottom, the top of the main shaft is connected with the motor through the transmission mechanism, and the bottom of the main shaft is connected with the central axis of the impeller to drive The impeller rotates; the side wall of the middle section of the main shaft is provided with a plurality of paddles; the mud pumping device also includes a first solenoid valve, a second solenoid valve and a third solenoid valve, and the first solenoid valve is arranged at the inlet of the impeller and the injection pipe On the discharge pipe between the two, the second electromagnetic valve is arranged at the outlet end of the injection pipe, and the third electromagnetic valve is arranged on the discharge pipe between the inlet of the injection pipe and the outlet of the discharge pipe; the first electromagnetic valve, the second Both the second solenoid valve and the third solenoid valve are connected with the mixing control device.

The mixer drives the main shaft to rotate through the motor, so as to drive the blades to rotate in one direction to stir the materials in the mixing tank, and at the same time drive the impeller of the mud pumping device at the bottom to push and discharge the materials deposited at the bottom of the mixing tank Tube. The flow direction of the material in the discharge pipe and the injection pipe can be controlled by opening and closing the first solenoid valve, the second solenoid valve and the third solenoid valve. When the first electromagnetic valve is opened, the material can flow toward the outlet of the discharge pipe and the injection pipe; when the first electromagnetic valve is closed, the material cannot be transported through the discharge pipe and the injection pipe. Open the first and second solenoid valves, the material can move to the upper part of the mixing tank along the injection pipe, and spray into the mixing tank from the outlet of the injection pipe to carry out circulating flow, and the impact of the paddle and the injected material can increase the shear The cutting speed can quickly and evenly complete the full mixing of cement and mixing water. The cement slurry is not only uniform and non-caking, but also has high production efficiency; when the second solenoid valve is closed, the material stops circulating. Open the first and third solenoid valves, and the materials can be discharged into the mixer through the outlet of the discharge pipe; close the third solenoid valve, open the second solenoid valve, and the materials can only flow to the outlet of the injection pipe. The mixing control device controls the opening and closing of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve to control the pumping situation, time, material circulation times and time.

The outlet direction of the jet pipe is tangent to and opposite to the direction of rotation of the paddle. The cement slurry is sprayed into the slurry mixing tank from the outlet of the injection pipe along the direction tangent to the rotation of the paddle and opposite to the rotation of the paddle, which can cause the cement slurry to collide with the paddle at a high speed in the opposite direction, improving the shearing and mixing effect.

The mixing method of the lightweight aggregate cement concrete mixing device includes the following steps carried out in sequence: ① injecting the required amount of water; ② adding cement to the water as required to make a cement slurry; ③ mixing the cement slurry with the lightweight aggregate The materials are mixed to make lightweight aggregate cement concrete; the cement mixing speed in step ① is higher than the mixing speed of cement and lightweight aggregate in step ②.

The mixing method also includes step ④: transporting the lightweight aggregate cement concrete made in step ③ to the concrete continuous mixing mechanism (4) for continuous mixing to avoid segregation; the stirring speed of the step ④ continuous mixing is lower than that of step ④ ③The mixing speed of cement and lightweight aggregate.

The mixing speed of the step ② is 800-1000 rpm; the mixing speed of the step ③ is 15-22 rpm; the mixing speed of the step ④ is 10-15 rpm.

The mixing method of the lightweight aggregate cement concrete is mixed in three stages, and in combination with machines with different mixing speeds, the sufficient mixing of the lightweight aggregate cement concrete is realized, segregation is effectively avoided, and automatic control production can be realized.

Compared with the prior art, the utility model application has the following advantages:

1) The lightweight aggregate cement concrete mixing device of the present application adopts multiple mixing machines with different functions, and mixes in three mixing stages with different mixing speeds, so that the cement and water can be fully mixed, so that the cement can be fully mixed after it meets water. The shell effect is suppressed, which can basically eliminate the phenomenon of cement agglomeration, and can ensure the integrity of lightweight aggregate and more fully uniform mixing with cement;

2) The side discharge port and the bottom discharge port are installed on the mixer and the continuous mixer, which can effectively solve the problem that the volume of the light aggregate mixing material discharged first is large, and the volume of the discharged part is small, resulting in the volume density of lightweight aggregate concrete products. the trouble of difference;

3) The automation and precise control of production can be realized by using the mixing control device.

Description of drawings

Fig. 1 is the structural representation of lightweight aggregate cement concrete mixing device described in the utility model;

Fig. 2 is a schematic structural view of the mixer of the lightweight aggregate cement concrete mixing device described in the present invention.

Label description:

Cement feeding mechanism 1, cement pulping mechanism 2, lightweight aggregate mixing mechanism 3, concrete continuous mixing mechanism 4, mixing control device 5, screw pump 6, concrete conveying mechanism 7, cement silo 11, silo screw conveying mechanism 12, Feeding bin 13, slurry mixing machine 21, water injector 22, aggregate bin 31, aggregate feeding device 32, mixer 33, continuous mixing machine 41, feeding machine 42, bottom material screw pump 61, fabric screw pump 62, feeding Material screw conveying mechanism 131, mixing tank 211, motor 212, transmission mechanism 213, main shaft 214, mud pumping device 215, water supply solenoid valve 216, slurry feeding solenoid valve 217, water inlet solenoid valve 221, water level monitoring probe 222, bone Silo electric control valve 311, aggregate monitoring probe 312, impeller 2151, injection pipe 2152, discharge pipe 2153, third solenoid valve 2154, paddle 2141, first solenoid valve 2155, and second solenoid valve 2156.

detailed description

The technical solution of the present utility model is described in detail below in conjunction with accompanying drawings 1-2 of the description.

As shown in Figure 1-2, a lightweight aggregate cement concrete mixing device described in the utility model, the lightweight aggregate cement concrete mixing device includes sequentially connected cement feeding mechanism 1, cement slurry making mechanism 2 and light bone material mixing mechanism 3, the stirring speeds of the cement slurry making mechanism 2 and the lightweight aggregate mixing mechanism 3 decrease successively. The lightweight aggregate cement concrete mixing device also includes a concrete continuous mixing mechanism 4, the concrete continuous mixing mechanism 4 is connected with the lightweight aggregate mixing mechanism 3 and the stirring speed of the concrete continuous mixing mechanism 4 is lower than that of the light aggregate mixing mechanism 3. The cement pulping mechanism 2 is a cement pulping mechanism with a stirring speed of 800-1000rpm, the lightweight aggregate mixing mechanism 3 is a light aggregate mixing mechanism with a stirring speed of 15-22rpm, and the concrete continuous mixing mechanism 4 is a stirring speed of 10 -15rpm concrete continuous mixing mechanism. The cement feeding mechanism 1 includes a cement storage bin 11 and a feeding bin 13, and the discharge port of the cement storage bin 11 is connected with the feeding port of the feeding bin 13; the cement slurry making mechanism 2 includes a slurry mixer 21 and a water injection device 22, the discharge device of the feeding bin 13, and the discharge port of the water injector 22 are respectively connected with the feed port of the mixer 21; the light aggregate mixing mechanism 3 includes the aggregate bin 31 and the mixer 33, and the mixer 21 The feed port and the discharge port of the aggregate bin 31 are connected to the feed port of the mixer 33 respectively; The cement slurry making mechanism 2 also includes a water supply solenoid valve 216 and a slurry feeding solenoid valve 217; the water supply solenoid valve 216 can control the water supply of the water injector 22, and the water supply solenoid valve 216 is arranged at the outlet of the water injector 22; The slurry feeding solenoid valve 217) is located at the discharge port of the slurry mixer 21 for controlling the slurry feeding amount of the slurry mixer 210, and the discharge device of the feeding bin 13 is provided with a feeding screw conveying mechanism 131, so The feeding screw conveying mechanism 131 can control the amount of cement feeding in the feeding bin 13; the lightweight aggregate mixing mechanism 3 also includes an aggregate feeding device 32 for controlling the amount of aggregate feeding, and the aggregate feeding device 32 is connected to the aggregate feeding device 32 respectively. The discharge port of the warehouse 31 is connected to the feed port of the mixer 33; the lightweight aggregate cement concrete mixing device also includes a mixing control device 5, a motor of the feeding screw conveying mechanism 131, a water supply solenoid valve 216, and a slurry feeding solenoid valve 217 , the motor of the mixer 21, the motor of the mixer 33, and the motor of the continued mixer 41 are all connected to the mixing control device 5 respectively. Described slurry mixing machine 21 comprises slurry mixing tank 211, motor 212, transmission mechanism 213, main shaft 214 and mud pumping device 215, and described mud pumping device 215 comprises impeller 2151, injection pipe 2152 and discharge pipe 2153, and impeller 2151 is installed in mixing The bottom of the slurry bucket 211, the bottom side of the slurry mixing bucket 211 is provided with an opening that is positioned at the side of the impeller 2151 and is connected with the discharge pipe 2153 arranged outside the slurry mixing bucket 211 to push the cement slurry into the discharge pipe 2153. The pipe 2152 is connected to the side wall of the discharge pipe 2153 and extends from bottom to top. The injection pipe 2152 extends along the side wall of the mixing tank 211 to the upper part of the inner cavity of the mixing tank 211; the main shaft 214 extends into the mixing tank from top to bottom. The inner cavity of the bucket 211, the top of the main shaft 214 is connected with the motor 212 through the transmission mechanism 213, and the bottom of the main shaft 214 is connected with the central axis of the impeller 2151 to drive the impeller 2151 to rotate; the middle section side wall of the main shaft 214 is provided with a plurality of blades 2141; The mud pumping device 215 also includes a first electromagnetic valve 2155, a second electromagnetic valve 2156 and a third electromagnetic valve 2154. The first electromagnetic valve 2155 is arranged on the discharge pipe 2153 between the impeller 2151 and the inlet of the injection pipe 2152. Two electromagnetic valves 2156 are located at the outlet end of the injection pipe 2152, and the third electromagnetic valve 2154 is located on the discharge pipe 2153 pipeline between the injection pipe 2152 inlet and the discharge pipe 2153 outlet; the first electromagnetic valve 2155, the second electromagnetic valve Both the valve 2156 and the third electromagnetic valve 2154 are connected with the stirring control device 5 . The exit direction of the spray pipe 2152 is tangent to and opposite to the rotation direction of the paddle 2141 .

The aggregate bin 31 is provided with an aggregate monitoring probe and an aggregate bin electric control valve 311 located at the feed inlet of the aggregate bin 31. The aggregate monitoring probe 312 and the aggregate bin electric control valve 311 are respectively connected with the mixing The control device 5 is connected to monitor the storage volume of the aggregate bin; when the aggregate storage volume is less than the set minimum storage volume, the mixing control device 5 controls to open the electric control valve 311 of the aggregate bin to carry out 31, when the storage volume of the aggregate bin exceeds the set maximum storage volume, the mixing control device 5 controls and closes the electric control valve 311 of the aggregate bin to stop the feeding of the aggregate bin 31. The water injector 22 is provided with a water level monitoring probe 222 and a water inlet electromagnetic valve 221 located at the feed port of the water injector 22, and the water level monitoring probe 222 and the water inlet electromagnetic valve 221 are respectively connected with the mixing control device 5 for Monitor the amount of water in the water injector; when the water storage in the water injector is less than the set minimum water storage, the mixing control device 5 controls to open the water inlet solenoid valve 221 to replenish the water injector 22; when the water storage in the water injector exceeds the set When the highest water storage capacity is reached, the stirring control device 5 controls to close the water inlet solenoid valve 221 to stop the replenishment of the water injector 22. Described concrete continuing mixing mechanism 4 also comprises the feeder 42 that is connected to the feed inlet of continuing mixer 41, and continuing mixer 41 is connected to mixer 33 discharge ports by this discharging machine 42, and the motor of discharging machine 42 Connect with mixing control device 5. The cement feeding mechanism 1 also includes a silo screw conveying mechanism 12 connected to the mixing control device 5 , the two ends of the silo screw conveying mechanism 12 are respectively connected to the outlet of the cement silo 11 and the inlet of the feeding silo 13 . The mixing machine 33 is preferably a bowl-shaped mixing machine with a large body diameter and a low height. The discharge port of the continuous mixer 41 can be connected with the concrete conveying mechanism 7 through the screw pump 6 , and the motor of the screw pump is connected with the mixing control device 5 . The screw pump 6 may include a bottom material screw pump 61 and a fabric screw pump 62 . The bottom material screw pump 61 and the surface screw pump 62 are used together to make the concrete discharge uniform. The outlets of the mixer 33 and the continuous mixer 41 can be arranged at the bottom or side wall of the mixer itself, and the uniformity of the bulk density of the mixed material can be improved by using the side outlet and the bottom outlet.

The mixing method of the lightweight aggregate cement concrete mixing device includes the following steps carried out in sequence: ① injecting the required amount of water; ② adding cement to the water as required to make a cement slurry; ③ mixing the cement slurry with the lightweight aggregate The materials are mixed to make lightweight aggregate cement concrete; the cement mixing speed in step ① is higher than the mixing speed of cement and lightweight aggregate in step ②. The mixing method also includes step ④: transporting the lightweight aggregate cement concrete made in step ③ to the concrete continuous mixing mechanism 4 for continuous mixing to avoid segregation; the stirring speed of the step ④ continuous mixing is lower than that of step ③ cement and mixing speed of lightweight aggregate. The mixing speed of the step ② is 800-1000 rpm; the mixing speed of the step ③ is 15-22 rpm; the mixing speed of the step ④ is 10-15 rpm. The step ① is specifically: the water injector 22 injects water into the mixer 21; the step ② is specifically: the cement in the cement silo 11 is transported to the feeding bin 13 through the silo screw conveying mechanism 12 and passed through the discharger. The feeding screw conveying mechanism 131 at the place is sent into the slurry mixer 21 and mixed with water to form cement slurry; the step 3 is specifically: the cement slurry is sent into the mixer 33 from the outlet of the slurry mixer 21, and the aggregate The lightweight aggregate in the bin 31 is put into the mixer 33 through the aggregate feeding device 32, and mixed with the cement slurry to form the lightweight aggregate cement concrete. The aggregate bin electric control valve 311 includes an electric control valve for the upper gate of the aggregate bin and an electric control valve for the lower gate of the aggregate bin. The motor of the storage bin screw conveying mechanism 12 connected to the stirring control device 5, the motor of the feeding screw conveying mechanism 131, the water supply solenoid valve 216, the motor of the mixing machine 21, and the slurry feeding solenoid valve 211 can be controlled by the stirring control device 5 , the electric control valve for the upper gate of the aggregate bin, the electric control valve for the lower gate of the aggregate bin, the monitoring probe 312 for the aggregate bin, the 33 motor for the mixer, the 42 motor for the unwinding machine and the 41 motor for the continuous mixer to realize the screw conveying mechanism of the silo 12. Control of feeding screw conveying mechanism 131, water injector 22, aggregate bin 31, slurry mixer 21, mixer 33, discharger 42, and continuous mixer 41. The motor 212 drives the main shaft 214 extending into the slurry mixing tank 211 through the transmission mechanism 213 to rotate, so that the paddle 2141 located on the side wall of the main shaft 214 drives the cement slurry in the mixing tank 211 to stir, and the main shaft 214 rotates while also Drive the impeller 2151 connected to the bottom end of the main shaft 214 to rotate. After the impeller 2151 pushes the cement slurry into the inlet of the discharge pipe 2153, the cement slurry can be discharged to the mixer 33 along the discharge pipe 2153 and or the injection pipe 2152 or return to the mixer. In the pulp barrel 211. Whether the first solenoid valve 2155 controls the cement slurry can flow out from the discharge pipe 2153 and the injection pipe 2152, whether the second solenoid valve 2156 controls the cement slurry can flow back to the mixing tank 211 for circulation, and the third solenoid valve 2154 controls whether the cement slurry can flow out. It is discharged from the discharge pipe 2153. When the cement slurry flows back into the mixing bucket 211 from the outlet of the injection pipe 2152 , its inflow direction is tangential to and opposite to the rotation direction of the paddle 2141 .

In addition, the mixing method adopted by the mixer 21 may be one or any combination of batch mixing or continuous mixing, disc vertical shaft mixing or circular groove horizontal shaft mixing. When the mixing method is adopted, one part of mixing water should be injected first, and then one part of cement powder should be added at a certain feeding speed by the feeding screw conveying mechanism. The purpose of injecting mixing water first is to avoid unmixed dry cement. Block the pump and pipeline. After this portion of slurry is evenly stirred, control and open the pilot valve 2154 to the working state of discharging material outward. After the discharge is completed, the pilot valve 2154 is closed to carry out the mixing operation of the next cement slurry. The continuous mixing method adopts continuous feeding, which can prevent cement agglomeration and is conducive to the full combination of cement and water. The aggregate feeding device 32 can feed in one or a combination of volume-by-part, weight-by-part, and flow accumulative methods. The stirring method adopted by the continuous mixer 41 may be one of the disk vertical shaft stirring method, the circular groove horizontal shaft stirring method or a combination of both. The concrete conveying mechanism 7 can adopt one or more combinations of pumping, mechanical conveying and vehicle conveying. The mixing control device 5 can adopt one or more combinations of relay sequential control and programming control.

The lightweight aggregate cement concrete mixing device described in the utility model is not limited to the above-mentioned embodiments, and any improvement or replacement based on the principle of the utility model should be within the scope of protection of the utility model.

Claims (7)

1. a kind of lightweight aggregate cement concrete mixing device it is characterised in that：Described lightweight aggregate cement concrete mixing device bag Include the cement batch charging mechanism (1) being sequentially connected, cement pulping mechanism (2) and lightweight aggregate and mix and stir mechanism (3), described cement pulper The mixing speed that structure (2), lightweight aggregate mix and stir mechanism (3) reduces successively.

2. lightweight aggregate cement concrete mixing device according to claim 1 it is characterised in that：Described lightweight aggregate cement mixes Solidifying soil mixing device also includes concrete Xu Ban mechanism (4), and this concrete Xu Ban mechanism (4) and lightweight aggregate mix and stir mechanism (3) even Connect and the mixing speed of concrete Xu Ban mechanism (4) compared with lightweight aggregate, to mix and stir mechanism (3) low.

3. lightweight aggregate cement concrete mixing device according to claim 2 it is characterised in that：Described cement pulping mechanism (2) the cement pulping mechanism for 800-1000rpm for mixing speed, it is 15- that lightweight aggregate mixes and stirs mechanism (3) for mixing speed The lightweight aggregate of 22rpm mixes and stirs mechanism, and concrete Xu Ban mechanism (4) is the concrete Xu Ban mechanism of 10-15rpm for mixing speed.

4. lightweight aggregate cement concrete mixing device according to claim 2 it is characterised in that：Described cement batch charging mechanism (1) cement bunker (11) and the storehouse that feeds intake (13), the discharging opening of described cement bunker (11) and the charging aperture of the storehouse that feeds intake (13) are included Connect；Described cement pulping mechanism (2) includes grout mixer (21) and injector (22), the discharger of the storehouse that feeds intake (13), injector (22) discharging opening is connected with grout mixer (21) charging aperture respectively；Lightweight aggregate mixes and stirs mechanism (3) and includes aggregate bin (31) and mix and stir Machine (33), grout mixer (21) discharging opening, the discharging opening of aggregate bin (31) are connected with mixer (33) charging aperture respectively；Concrete continues Mix mechanism (4) and include continuing machine (41) of mixing, mixer (33) discharging opening is connected with the continuous charging aperture mixing machine (41).

5. lightweight aggregate cement concrete mixing device according to claim 4 it is characterised in that：Described cement pulping mechanism (2) also include water-suppling electromagnetic valve (216) and slurry feeds intake electromagnetic valve (217)；Described water-suppling electromagnetic valve (216) can control injector (22) confluent, this water-suppling electromagnetic valve (216) is arranged at the exit of injector (22)；Described slurry feeds intake electromagnetic valve (217) discharge outlet located at grout mixer (21) is used for controlling grout mixer (210) slurry inventory, the discharger of the storehouse that feeds intake (13) Place is provided with pressure feeding spiral conveying mechanism (131), and described pressure feeding spiral conveying mechanism (131) can control the storehouse that feeds intake (13) cement to feed intake Amount；

Described lightweight aggregate mixes and stirs the aggregate charging device (32) that mechanism (3) also includes for controlling aggregate inventory, and this aggregate is thrown Material device (32) is connected with aggregate bin (31) discharging opening and mixer (33) charging aperture respectively；

Described lightweight aggregate cement concrete mixing device also includes mixing and stirring control device (5), pressure feeding spiral conveying mechanism (131) Motor, water-suppling electromagnetic valve (216), slurry feed intake electromagnetic valve (217), the motor of grout mixer (21), the motor of mixer (33), continuous The motor mixing machine (41) respectively mixes and stirs control device (5) with this and is connected.

6. lightweight aggregate cement concrete mixing device according to claim 5 it is characterised in that：Described grout mixer (21) bag Include slurry mixing tank (211), motor (212), drive mechanism (213), main shaft (214) and mud pumping device (215), described mud is taken out Device (215) is sent to include impeller (2151), playpipe (2152) and discharge pipe (2153), impeller (2151) is installed on slurry mixing tank (211) bottom, the bottom side of slurry mixing tank (211) be provided with positioned at impeller (2151) side and be arranged at slurry mixing tank (211) discharge pipe outward (2153) connects the opening to be advanced to cement slurry in discharge pipe (2153), playpipe (2152) It is connected to the side wall of discharge pipe (2153) and from bottom to top extend, the stretching along along the wall of slurry mixing tank (211) side of this playpipe (2152) To slurry mixing tank (211) inner chamber top；Main shaft (214) stretches into slurry mixing tank (211) inner chamber from top to bottom, and main shaft (214) top is passed through Drive mechanism (213) is connected with motor (212), and main shaft (214) bottom is connected with the central shaft of impeller (2151) with impeller (2151) rotate；The stage casing side wall of main shaft (214) is provided with multiple blades (2141)；Described mud pumping device (215) also includes First electromagnetic valve (2155), the second electromagnetic valve (2156) and the 3rd electromagnetic valve (2154), described first electromagnetic valve (2155) located at On discharge pipe (2153) pipeline between impeller (2151) and playpipe (2152) entrance, the second electromagnetic valve (2156) is located at injection The outlet end of pipe (2152), the 3rd electromagnetic valve (2154) is between playpipe (2152) entrance and discharge pipe (2153) outlet Discharge pipe (2153) pipeline on；Described first electromagnetic valve (2155), the second electromagnetic valve (2156) and the 3rd electromagnetic valve (2154) All with mix and stir control device (5) and be connected.

7. lightweight aggregate cement concrete mixing device according to claim 6 it is characterised in that：Described playpipe (2152) Way out tangent and contrary with blade (2141) direction of rotation.