CN204800860U - A concrete mixing station - Google Patents

Abstract

The utility model discloses a concrete mixing station, which comprises a frame. The upper part of the frame is provided with sand and gravel silos, cement silos, additive silos, fly ash silos and water tanks, and the lower part of the frame is equipped with concrete Mixer, the bottom of the concrete mixer is connected with a discharge device, weighing devices are respectively installed on the gravel silo, cement silo, additive silo, and fly ash silo, and a flow meter is installed on the water tank. High-speed mixer, the discharge port on the cement silo, the additive silo, the fly ash silo and the outlet pipe at the bottom of the water tank are respectively connected to the feed inlet of the high-speed mixer, the discharge port of the high-speed mixer and the sand The discharge port of the stone silo is connected to the feed port of the concrete mixer. The utility model has the advantages of improving the strength and workability of concrete, effectively solving the problem of cement mass and shaft holding, and improving production efficiency.

Description

A concrete mixing station

technical field

The utility model relates to a concrete mixing station.

Background technique

The essence of concrete is that cement or other cementitious materials bind scattered materials (coarse aggregate and fine aggregate) together through hydration and hardening. The cement undergoes a series of physical and chemical changes during the whole process, and the aggregate plays a role in the process. The role of support, no chemical reaction, only physical mixing with cement slurry when stirring.

When a traditional concrete mixing station feeds materials into the mixer, sand and gravel aggregates, cement powder, and water are fed and stirred at the same time. It is fully developed, which affects the quality of the concrete, and the material group is easy to stick to the mixing arm and the mixing shaft of the mixer, resulting in a shaft-holding phenomenon, resulting in a crash setting that damages the mixing shaft and the mixing arm. This kind of concrete mixing plant has a long mixing time and low efficiency.

Utility model content

The technical problem to be solved by the utility model is to provide a concrete mixing plant which can realize fast mixing to make concrete in view of the above defects.

In order to solve the above technical problems, the concrete mixing plant provided includes a frame, the upper part of the frame is equipped with sand and gravel silos, cement silos, additive silos, fly ash silos and water tanks, and the lower part of the frame is equipped with concrete The mixer, the bottom of the concrete mixer is connected with a discharge device, and its structural features are: the sand and gravel silo, the cement silo, the additive silo, and the fly ash silo are respectively equipped with a weighing device, and the water tank is equipped with a flow meter. , the frame is equipped with a high-speed mixer, the discharge port on the cement silo, the additive silo, the fly ash silo and the outlet pipe at the bottom of the water tank are respectively connected with the feed inlet of the high-speed mixer, and the high-speed Both the discharge port of the mixer and the discharge port of the gravel silo are connected to the feed port of the concrete mixer.

After adopting the above structure, the raw materials in the cement silo, additive silo and fly ash silo are weighed and quantified into the high-speed mixer, and a certain amount of water is poured into the high-speed mixer, and the high-speed mixer is mixed at a high speed to make cement. Put the prepared cement slurry and a certain amount of sand and gravel raw materials in the sand and gravel silo into the concrete mixer for mixing to make concrete. In the above process, the cement and water are first put into the high-speed mixer, and the high-speed mixing can promote the violent collision between the particle molecules, which can break the material group, fully mix and undergo hydration reaction, and make cement slurry to improve the utilization rate of cement. Avoid the mud and soil impurities in the sand and gravel materials to ensure the purity and high efficiency of the cement slurry. The liquid admixture is fully mixed with the cement slurry in the high-speed mixer to improve the characteristics of the later concrete; the cement slurry and the sand and gravel aggregate are put into double The horizontal shaft mixer stirs and mixes, and the cement slurry easily enters the gap between the sand and gravel materials. The mixing time can be shortened by 5-10s compared with the traditional process, which reduces the cycle time of the whole process, which improves the production efficiency, and can prevent the cement mass from sticking to the mixing. The "shaft holding" phenomenon formed on the arm and the stirring shaft.

As an improvement of the utility model, the high-speed mixer includes a high-speed mixing drum connected to the frame, and the top of the high-speed mixing drum is equipped with a cover, and the cover is provided with the cement silo and the additive material through the pipeline respectively. silo, fly ash silo, and the feed port connected to the discharge port of the water tank. The high-speed mixing drum is connected with a high-speed stirring shaft driven by a high-speed stirring power mechanism, and a stirring arm is connected to the high-speed stirring shaft. The bottom of the high-speed mixing drum is provided with a discharge port; the stirring arm includes a plurality of stirring main arms connected to the high-speed stirring shaft through a transverse support arm and arranged vertically along the high-speed stirring shaft ring, and the stirring main arms are connected with Multiple stirring arms arranged vertically at intervals; the high-speed stirring shaft includes a stirring main shaft that is rotatably connected to the high-speed mixing drum, and the top of the stirring main shaft is connected with a stirring installation sleeve, and the stirring main arm is connected to the stirring installation through a horizontal support arm. Put it on, the bottom of the mixing main shaft protrudes from the high-speed mixing drum and is connected to the high-speed mixing power mechanism. The high-speed mixer with this structure has the advantages of good mixing effect and high cement utilization rate.

As a further improvement of the utility model, a material guide pipe is installed between the discharge port of the sand and gravel silo and the feed port of the concrete mixer, and an automatic unloader that can close and open the discharge port of the sand and gravel silo is installed in the guide pipe. Unloading device; the automatic unloading device includes two unloading shafts that are rotatably connected in the material guide pipe and set opposite to each other. The two unloading shafts are correspondingly connected with a sealing baffle whose shape is suitable for the discharge port of the sand and gravel silo. A discharge crank arm is arranged between the extended ends of the two discharge shafts, and a discharge cylinder is connected between the two discharge crank arms.

As a further improvement of the utility model, the concrete mixer includes a mixing barrel connected to the frame, and two stirring shafts arranged vertically and parallelly are connected to the inside of the mixing barrel, and the two stirring shafts are driven by a power device and synchronized, Rotate at the same speed and turn in the opposite direction. The two stirring shafts are equipped with stirring screw blades correspondingly. The inner bottom surface of the mixing barrel is an arc-shaped surface that adapts to the contour line formed when the stirring screw blades rotate; the top of the mixing barrel is equipped with a catch The mixer cover is smaller than the lower opening and has a conical shape, and the side wall of the mixer cover is equipped with an openable observation window. In the middle of the bottom of the mixing barrel, there is a strip-shaped outlet extending along its axial direction. The discharging device includes a discharging shaft that is rotatably connected to the mixing barrel and driven to rotate by a power mechanism. There is an arc-shaped baffle adapted to the shape of the bottom surface of the mixing barrel and positioned correspondingly to the discharge port.

As a further improvement of the utility model, a pulse dust collector is installed on the frame, and the tops of the gravel silo, cement silo, fly ash silo, concrete mixer and high-speed mixer are respectively connected to the pulse dust collector through pipelines.

It can be seen from the above description that the utility model has the advantages of improving the strength and workability of concrete, effectively solving the problem of cement mass and shaft holding, and improving production efficiency.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail:

Fig. 1 is the structural representation of a kind of embodiment of the utility model;

Fig. 2 is a schematic structural view taken along line A-A in Fig. 1;

Fig. 3 is a schematic structural view taken along line B-B in Fig. 1;

Fig. 4 is the structural representation of high-speed mixer in Fig. 1 embodiment;

Fig. 5 is a schematic structural view along C-C section in Fig. 4;

Fig. 6 is the structural representation of unloading device in Fig. 1 embodiment;

Fig. 7 is a schematic structural diagram of the left view state in Fig. 6;

Fig. 8 is the structural representation of concrete mixer in Fig. 1 embodiment;

Fig. 9 is a schematic structural diagram of the left view of Fig. 8;

FIG. 10 is a schematic view of the top view of FIG. 8 .

Detailed ways

In the prior art, the sand and gravel are transported to the sand and gravel silo by the belt conveyor, and the cement is sent to the cement silo by the screw conveyor, and the sand and gravel in the sand and gravel silo, the cement in the cement silo and the additives, pulverized coal Both ash and water are put into the concrete mixer, and the concrete is produced through the mixing of the concrete. The concrete mixing equipment of this structure has the following disadvantages: the simultaneous feeding will cause the hydration reaction of the cement, which will affect the quality of the concrete, and this simultaneous Stirring by feeding materials also has the disadvantages of long stirring time, low labor efficiency and easy shaft holding phenomenon.

As shown in Fig. 1, Fig. 2 and Fig. 3, the utility model provides the best embodiment of a kind of concrete mixing plant, and this concrete mixing plant comprises frame 1, and the top of frame 1 is provided with gravel silo 10, The cement silo 11, the additive silo 12, the fly ash silo 13 and the water tank 14 transport the sand and gravel to the sand and gravel silo 10 through the belt conveyor 101, and transport the cement and fly ash respectively through the screw conveyor 102 To the cement silo and the fly ash silo, the lower part of the frame 1 is equipped with a concrete mixer 2, and the bottom of the concrete mixer 2 is connected with a discharge device, the sand and gravel silo 10, the cement silo 11, the additive silo 12, the pulverized coal Ash silo 13 is equipped with weighing device 15 respectively, and this weighing device 15 can adopt pressure transducer or load cell, also can adopt existing weighing feeding platform certainly, its purpose is to sandstone silo 10, cement Various raw materials in feed bin 11, additive feed bin 12, fly ash feed bin 13 carry out quantitative proportioning, flow meter is housed on water tank 14, high-speed mixer 3 is housed on described frame 1, cement feed bin 11, additive The discharge port on the silo 12, the fly ash silo 13 and the outlet pipe at the bottom of the water tank 14 are respectively connected to the feed port of the high-speed mixer, and the discharge port of the high-speed mixer 3 and the discharge port of the sand and gravel silo 10 The ports are all connected to the feed port of the concrete mixer. The above settings realize the automatic quantitative ratio of materials, that is to say, according to the optimal ratio, the cement, fly ash, additives and water are first made into cement slurry through the high-speed mixer, and then the mixture is mixed. Comparing suitable sandstone and cement slurry with a concrete mixer to make qualified concrete, this method will improve the hydration reaction of cement, improve the strength and workability of concrete, and effectively solve the phenomenon of cement lumps and shaft-holding problems ,Increase productivity.

As shown in Fig. 4 and Fig. 5, in the present embodiment, the high-speed mixer 3 includes a high-speed mixing drum 31 connected to the frame 1, and the top of the high-speed mixing drum 31 is equipped with a cylinder cover 32, and the cylinder cover 32 is provided with The feed port connected to the discharge port of the cement silo 11, the additive silo 12, the fly ash silo 13 and the water tank 14 through pipelines respectively, specifically, the additive in the additive silo 12 and the water The water in the tank 14 is mixed and then enters the above-mentioned high-speed mixing drum 31 together. The high-speed mixing drum 31 is rotatably connected with a high-speed stirring shaft 33 driven by a high-speed stirring power mechanism. The high-speed stirring shaft 33 is connected with a stirring arm 34. The bottom of the high-speed mixing drum 31 is provided with a discharge port, and the stirring arm 34 includes a plurality of stirring main arms 341 that are connected to the high-speed stirring shaft by a transverse support arm and are vertically arranged along the high-speed stirring shaft 33 ring cloth. The main arm 341 is evenly distributed around the ring, and the stirring main arm 341 is connected with a plurality of stirring arms 342 arranged vertically at intervals, and the plurality of stirring arms 342 on the same stirring main arm 341 extend horizontally outward or inward. and the extending distances of multiple stirring arms 342 on the same stirring main arm 341 can be unequal, of course, the situation that the extending distances are equal can also be used, and the stirring main arm and the stirring arms of the above-mentioned structure can make the stirring more uniform , that is, three-dimensional stirring without dead ends is adopted, so that the cement can undergo a thorough hydration reaction, and the utilization rate of cement can be improved. Stirring installation sleeve 332, the main stirring arm 341 is connected to the stirring installation sleeve through a transverse support arm, the bottom of the stirring main shaft 331 protrudes from the high-speed mixing drum 31 and is connected to the high-speed stirring power mechanism, and the high-speed stirring power Mechanism is the motor speed reducer 38 that is connected on the frame, and this setting can be more convenient for maintenance, thereby guarantees high-speed stirring effect.

As shown in Fig. 1, Fig. 6 and Fig. 7, a material guide pipe 4 is installed between the discharge port of the sand and gravel silo 10 and the feed port of the concrete mixer, and the discharge port of the sand and gravel silo 10 is installed in the feed guide pipe 4. The automatic unloading device with closed and opened feed opening; the automatic unloading device includes two unloading shafts 5 that are rotatably connected in the material guide pipe 4 and arranged oppositely, and the two unloading shafts 5 are correspondingly connected with shapes and gravel silos. 10, the sealing baffle plate 6 that is suitable for the discharge port of 10, the discharge crank arm 7 is installed between the extended ends of the two discharge shafts 5, and the discharge cylinder 8 is connected between the two discharge crank arms 7, through The expansion and contraction of the discharge cylinder 8 makes the discharge shaft 5 rotate, so that the sealing baffle 6 blocks the discharge port of the sand and gravel silo 10 and the sealing baffle 6 is far away from the above-mentioned discharge port for discharging. In this embodiment, the sand The discharge port of the stone silo 10 is in the shape of an inverted cone, that is, the bottom of the side plates of the sand and gravel silo 10 forms a conical shape. When closed, the two sealing baffles 6 lean against the inclined sides of the end plate and the side plate of the sand and gravel silo 10 respectively. Above, the above-mentioned unloading shaft 5 is located below the end plate of the above-mentioned sand and gravel silo 10. When unloading starts, the two baffles rotate around the unloading shaft 5 to form a guide plate. This automatic unloading device has the characteristics of complete unloading and The advantages of tight sealing.

As shown in Figures 8 to 10, the concrete mixer 2 includes a mixing drum 20 connected to the frame 1, in which two mixing shafts 21 arranged parallel to each other are connected in rotation, and the two mixing shafts 21 are formed by The power unit is driven and synchronous, at the same speed, and turns in the opposite direction. The two stirring shafts 21 are equipped with stirring screw blades 22 correspondingly. On the surface, the top of the mixing barrel 20 is equipped with a mixer cover 23 with an upper opening smaller than the lower opening and a conical shape. The side wall of the mixer cover 23 is equipped with an openable observation window 24. The middle of the bottom of the mixing barrel 20 is provided with a window along its axis. To the elongated discharge port extending, since two stirring shafts 21 are provided, the bottom of the mixing drum 20 has two above-mentioned arc-shaped surfaces, and the above-mentioned discharge port is arranged in the middle of the two-section arc-shaped surfaces to be smooth At the transition, the discharge device includes a discharge shaft 25 that is rotatably connected to the mixing drum 1 and driven to rotate by a power mechanism. Hinged with the piston rod of the cylinder, a handle 28 can also be provided at the outstretched end of the discharge shaft 25, and the discharge shaft is rotated by the handle. The arc-shaped baffle 26 provided corresponding to the discharge port, the concrete mixer adopting the above-mentioned structure has the advantages of good mixing effect, no dead angle mixing and thorough discharge.

As shown in Figures 1 to 3, a pulse dust collector 9 is installed on the frame 1, and the tops of the sand and gravel silo 10, the cement silo 11, the fly ash silo 13, the concrete mixer 2 and the high-speed mixer 3 pass through the tubes respectively. The road is connected with the pulse dust collector. The specific structure of the pulse dust collector 9 is the prior art, so it will not be repeated here. It has the functions of dust removal and balancing the air pressure of each warehouse.

The above is the specific structural form of the present utility model, and the present utility model is not limited by the above-mentioned embodiments. For those skilled in the art, based on the equivalent changes of the specific structure of the present utility model and parts replacement, all are within the scope of the present utility model. within the scope of protection.

Claims (10)

1. A concrete mixing plant, including a frame (1), the upper part of the frame (1) is provided with a sand and gravel silo (10), a cement silo (11), an additive silo (12), and a fly ash silo (13) and water tank (14), the lower part of the frame (1) is equipped with a concrete mixer (2), and the bottom of the concrete mixer (2) is connected with a discharge device, which is characterized in that: the sand and gravel silo (10) , the cement silo (11), the additive silo (12), and the fly ash silo (13) are respectively equipped with a weighing device (15), and a flow meter is installed on the water tank (14), and the frame (1 ) is equipped with a high-speed mixer (3), the discharge port on the cement silo (11), the additive silo (12), the fly ash silo (13) and the outlet pipe at the bottom of the water tank (14) are respectively connected with The feed port of the high-speed mixer is connected, and the discharge port of the high-speed mixer (3) and the discharge port of the sand and gravel silo (10) are both connected to the feed port of the concrete mixer. 2. The concrete mixing plant according to claim 1, characterized in that: the high-speed mixer (3) includes a high-speed mixing drum (31) connected to the frame (1), and the top of the high-speed mixing drum (31) is There is a cylinder cover (32), and the cylinder cover (32) is provided with the cement silo (11), the additive silo (12), the fly ash silo (13) and the water tank ( 14) The feed port connected to the discharge port, the high-speed mixing drum (31) is connected with a high-speed stirring shaft (33) driven by a high-speed stirring power mechanism, and the high-speed stirring shaft (33) is connected with a stirring arm ( 34), the bottom of the high-speed mixing drum (31) is provided with a discharge port. 3. The concrete mixing plant according to claim 2, characterized in that: the mixing arm (34) includes a vertically arranged ring that is connected to the high-speed stirring shaft through a transverse support arm and arranged along the high-speed stirring shaft (33). A plurality of main stirring arms (341), connected to the main stirring arms (341) are a plurality of stirring support arms (342) arranged vertically at intervals. 4. The concrete mixing plant according to claim 3, characterized in that: the high-speed mixing shaft (33) includes a mixing main shaft (331) rotatably connected to the high-speed mixing drum (31), and the top of the mixing main shaft (331) A stirring installation sleeve (332) is connected, the main stirring arm (341) is connected to the stirring installation sleeve through a transverse support arm, the bottom of the stirring main shaft (331) protrudes from the high-speed mixing drum (31) and is connected to the high-speed Stirring power mechanism power connection. 5. The concrete mixing plant according to any one of claims 1-4, characterized in that: a material guide pipe ( 4), the material guide pipe (4) is equipped with an automatic unloading device that can close and open the discharge port of the sand and gravel silo (10). 6. The concrete mixing plant according to claim 5, characterized in that: the automatic unloading device includes two unloading shafts (5) which are rotatably connected in the material guide pipe (4) and arranged oppositely, and the two unloading shafts (5) The material shaft (5) is correspondingly connected with a sealing baffle (6) whose shape is suitable for the discharge port of the sand and gravel silo (10), and a discharge handle is installed between the extended ends of the two discharge shafts (5). Arm (7), is connected with unloading cylinder (8) between two unloading crank arms (7). 7. The concrete mixing plant according to any one of claims 1-4, characterized in that: the concrete mixer (2) includes a mixing barrel (20) connected to the frame (1), and the mixing There are two agitating shafts (21) arranged vertically and parallel in the barrel (20). The two agitating shafts (21) are driven by the power device and rotate synchronously, at the same speed, and in opposite directions. The two agitating shafts (21) are equipped with corresponding Stirring screw blades (22) are arranged, and the inner bottom surface of the mixing barrel (20) is an arc surface adapted to the contour line formed when the stirring screw blades (22) rotate. 8. The concrete mixing plant according to claim 7, characterized in that: the top of the mixing barrel (20) is equipped with a conical mixer cover (23) whose upper opening is smaller than the lower opening, and the mixer cover (23) Openable observation window (24) is equipped with on the side wall. 9. The concrete mixing plant according to claim 7, characterized in that: the middle of the bottom of the mixing barrel (20) is provided with a strip-shaped outlet extending along its axial direction, and the discharging device includes Rotate the discharge shaft (25) connected to the mixing drum (1) and driven by the power mechanism. The discharge shaft (25) is equipped with a The arc baffle (26) that is set. 10. The concrete mixing plant according to any one of claims 1-4, characterized in that: the frame (1) is equipped with a pulse dust collector (9), the sand and gravel silo (10), cement material The tops of the silo (11), the fly ash silo (13), the concrete mixer (2) and the high-speed mixer (3) are respectively connected to the pulse dust collector through pipelines.