Concrete slurry admixture preparation device

Abstract

The utility model provides a concrete slurry admixture preparation device which comprises a stirrer, the stirrer comprises a spiral stirring blade, a cavity, a stirring pump, a feeding device and a detection device, light sensors are arranged on the two sides of the inner wall and the bottom of the detection device, a weighing device is arranged on the bottom, a light emitter is installed on the top of the detection device, and the detection device further comprises a controller. The controller controls the light sensor, the weighing device and the light emitter to start and stop and receives signals fed back by the light sensor and the weighing device. The bottom of the detection device is connected with a first conveying pipe, the first conveying pipe is connected with a discharging component and a return pump, and the return pump is connected with a second conveying pipe and a storage bin. If the concrete slurry admixture reaches the standard, the concrete slurry admixture is discharged from the discharging component or flows into the storage bin; and if the concrete slurry admixture does not reach the standard, the concrete slurry admixture is pumped back into the stirrer to be stirred again. The device can be used for preparing the concrete slurry admixture which is finer in raw material granularity, uniform in dispersion and good in stability compared with the admixture.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete paste admixture preparation, in particular to a concrete paste admixture preparation device. Background Art

[0002] The use of prefabricated slurry admixtures to produce concrete is an emerging technical route in recent years to reduce the cost and energy consumption of concrete production. Its main principle is to use water as a medium, add a specific amount of active activator and dispersant, and completely disperse the admixture in water through mechanical stirring and other means, and supplemented with other stabilizers to obtain an admixture slurry with excellent dispersion performance and good stability. After being completely dispersed in water, the admixtures in these slurries have finer particle sizes and specific surface areas than powdered admixtures, and show better activity when applied to concrete production. Therefore, the use of slurry admixtures to produce concrete can reduce the amount of cement and admixtures while ensuring the mechanical properties and durability of concrete, while improving the workability of fresh concrete, saving costs, and reducing energy consumption.

[0003] The preparation of concrete and concrete paste admixtures have different requirements for equipment. The preparation device of concrete is mainly a mixing device. Because the resistance of mixing concrete is large, the mixing blades are thicker, and the rotation speed requirement is lower. Generally, the volume is larger, and the concrete can be loaded after mixing for a few minutes. The preparation device of concrete paste admixture is different. During the mixing of concrete paste admixture, the equipment is subject to less resistance, and the rotation speed requirement is higher, and the volume does not need to be too large. Based on the difference between the existing technologies of the two and according to relevant test data, the paste admixture prepared according to the concrete mixing technology has the disadvantages of uneven dispersion of admixtures, poor paste stability, and easy precipitation, which limits its large-scale use in concrete production. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a concrete slurry admixture preparation device, which is used to prepare a concrete slurry admixture with a smaller particle size than the admixture raw material, uniform dispersion, and good slurry stability under the premise of fully considering the preparation characteristics of the concrete slurry admixture. The corresponding technical scheme is as follows:

[0005] A concrete slurry admixture preparation device, comprising:

[0006] A stirrer, the stirrer comprising a spiral stirring blade, a cavity and a stirring pump;

[0007] A feeding device, wherein the feeding device is connected to the agitator through a pipeline;

[0008] A detection device, the detection device is connected to the bottom of the agitator through a connecting pipe, and light sensors are provided on both sides of the inner wall and the bottom of the detection device, a weighing device is provided on the bottom, and a light emitter is installed on the top; the detection device also includes a controller, which controls the start and stop of the light sensor, the weighing device, and the light emitter and receives feedback signals from the light sensor and the weighing device;

[0009] The bottom of the detection device is connected to the first end of the first delivery pipe, the second end of the first delivery pipe is connected to the discharge component, and the concrete slurry admixture that meets the standards after detection flows through the first delivery pipe and is discharged from the discharge component;

[0010] The third end of the first delivery pipe is connected to the first end of the return pump; the second end of the return pump is connected to the second delivery pipe; the second delivery pipe is connected to the agitator, and the return pump draws the concrete slurry admixture that does not meet the inspection standards back to the agitator for re-stirring and mixing.

[0011] Furthermore, a triangular one-way flow blocker is provided inside the second delivery pipe, so that the interior of the second delivery pipe forms a cone shape to prevent the concrete slurry admixture from flowing back.

[0012] Furthermore, the second end of the return pump is connected to the second delivery pipe and the storage bin, and valves are installed at the connections between the second end of the return pump and the second delivery pipe and the storage bin; when the valve at the connection between the second end of the return pump and the second delivery pipe is closed and the valve at the connection between the second end of the return pump and the storage bin is opened, the concrete slurry admixture flows into the storage bin; when the valve at the connection between the second end of the return pump and the second delivery pipe is opened and the valve at the connection between the second end of the return pump and the storage bin is closed, the concrete slurry admixture needs to flow into the second delivery pipe.

[0013] Furthermore, a valve is installed at the bottom of the storage bin, and when the concrete slurry admixture stored in the storage bin needs to be used, the valve is opened.

[0014] Furthermore, a pressure sensor is provided in the weighing device.

[0015] Furthermore, the light emitter is in the shape of a plate, a tube, a belt or a sphere.

[0016] Furthermore, a valve is installed at the bottom of the agitator, and the agitator is detachably connected to one end of the connecting pipe through the valve at the bottom, and the other end of the connecting pipe is detachably connected to the detection device.

[0017] Furthermore, the agitator is cylindrical, and its diameter ranges from 1.5 meters to 2.5 meters.

[0018] Furthermore, the rated speed of the stirring pump is greater than or equal to 1500r / min.

[0019] Furthermore, the rotation speed of the stirring pump can be controlled to be less than or equal to 100 r / min.

[0020] Beneficial effects:

[0021] (1) The utility model utilizes the technical feature of the detection device to detect the uniformity, solid content, particle size and other characteristics of the concrete slurry admixture, so as to determine whether the concrete slurry admixture meets the preset standard (i.e., smaller particle size than the admixture raw material, more uniform dispersion, better stability, less prone to sedimentation, etc.). For the concrete slurry admixture that does not meet the standard, it will be transported back to the mixer for re-preparation; only when it meets the preset standard will the corresponding concrete slurry admixture be discharged from the equipment, used for concrete mixing or stored. Therefore, this can ensure the quality of the prepared concrete slurry admixture and avoid a series of problems caused by the substandard quality of the concrete slurry admixture.

[0022] (2) Since the detection device provided by the utility model performs detection specifically according to the characteristics of concrete paste admixtures, it has good detection accuracy and, at the same time, reduces the amount of manual work required for detection to a certain extent.

[0023] (3) The utility model optimizes the agitator in a targeted manner according to the characteristics of the concrete slurry admixture, such as using spiral stirring blades, thereby making the mixing preparation of the concrete slurry admixture more efficient and achieving beneficial effects such as simplifying the equipment and reducing the weight and volume of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] The following are the descriptions of the accompanying figures:

[0026] 1. Agitator; 11. Agitator blade; 12. Agitator pump;

[0027] 2. Detection device; 21. Light sensor; 22. Weighing device; 23. Light emitter;

[0028] 3. The first conveying pipe;

[0029] 4. Discharging parts;

[0030] 5. Feeding pump;

[0031] 6. Storage silo;

[0032] 7. Second delivery pipe; 71. One-way flow blocker;

[0033] 8. Feeding device;

[0034] 9. Valve. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the technical solution of the present application clearer, the technical solution of the embodiment of the present application will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present application. The same figure marks in the drawings represent the same parts. The described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] In the following description, directional terms such as "up", "down", "left", and "right" are used. It should be understood that these directional terms are with respect to the directions shown in the figures, and the terms are used for convenience of description rather than to limit the present application.

[0037] Example:

[0038] As attached Figure 1 As shown, a concrete paste admixture preparation device, a feeding device 8 is a loading device for the raw materials required for preparing the concrete paste admixture, the feeding device 8 is arranged above the agitator 1 and connected to the agitator 1 through a pipeline, the feeding device 8 is equipped with a valve 9, and a valve 9 is also installed on the pipeline connecting the feeding device 8 and the agitator 1;

[0039] The agitator 1 includes a stirring chamber, a stirring blade 11 and a stirring pump 12; the stirring blade and the stirring pump 12 can be placed vertically or horizontally. At the same time, the volume of the agitator 1 does not need to be too large, and its diameter ranges from 1.5 meters to 2.5 meters, about 2 meters, preferably 2 meters. However, the rated speed requirement for the stirring pump 12 is relatively high, preferably above 1500r / min, and the stirring time needs to be more than half an hour. The controllable range of the speed of the stirring pump should be less than or equal to 100r / min.

[0040] Preferably, the stirring blade 11 is spiral-shaped. This is because the concrete slurry admixture stirring device encounters less resistance during the stirring process, so there is no need to select large blades, and spiral thin blades can be selected, thereby simplifying the equipment and reducing the weight and volume of the equipment.

[0041] A valve 9 is installed at the bottom of the agitator 1. The agitator 1 is connected to one end of a hose through the valve 9 at the bottom, and the other end of the hose is connected to the detection device 2. Of course, the hose here is a connecting pipe, which can be replaced by other pipes, such as stainless steel pipes, PVC pipes, etc. The valve 9 is a detachable valve, for example, installed with bolts. When the raw materials enter the agitator 1 and are stirred to form a concrete slurry admixture, they are transported into the detection device 2 through the hose.

[0042] The detection device 2 is provided with light sensors 21 on both sides of the inner wall and the bottom, a weighing device 22 is provided on the bottom, and a light emitter 23 is provided on the top. The weighing device 22 is provided with a plurality of pressure sensors. The light emitter 23 can be an LED lamp, and the light emitter 23 can be a light-emitting board, such as an LED lamp board formed by splicing a plurality of LED lamps. The light emitter 23 can also be a single light source, and a lamp tube, a light strip, a light bulb, etc. with a certain light intensity are used. The detection device 2 also includes a controller, and the controller uses an existing small computer. The controller controls the start and stop of the light sensor 21, the weighing device 22, and the light emitter 23 through wired or wireless (such as Bluetooth) means and receives the feedback signals of the light sensor 21 and the weighing device 22.

[0043] Regarding the detection of uniformity, since the transmittance of concrete slurry admixtures varies greatly when their uniformity is inconsistent, the uniformity of concrete slurry admixtures can be detected by measuring their transparency. When the concrete slurry admixture enters the detection device 2 for detection, the light emitter 23 emits a light source that irradiates downward, and the light sensor 21 outputs different electrical signals according to the intensity of the light it receives. By performing a comprehensive comparison and analysis of the signals received by the light sensors on both sides of the inner wall and the bottom of the detection device, the transparency and uniformity of the concrete slurry admixture can be detected. Based on the needs of storage, transportation and sale of concrete slurry admixtures, the higher the stability of concrete slurry admixtures, the better, and the uniformity of concrete slurry admixtures is one of the important indicators that reflect the stability of the slurry.

[0044] Regarding the detection of solid content, due to the different densities of the mixed solid raw materials and water, when the solid content of the concrete slurry admixture is determined and the volume is fixed, solid content (%) = (mass of solid matter / mass of mixture) × 100%. Based on this, the ideal weight of the corresponding concrete slurry admixture can be calculated. Therefore, the actual weight of the corresponding concrete slurry admixture can be measured. By comparing the difference between the ideal weight and the actual weight, it is determined whether the corresponding concrete slurry admixture is qualified. When the concrete slurry admixture enters the detection device 2 for detection, since the volume of the detection device 2 is fixed, the weight of the concrete slurry admixture in the detection device 2 can be detected by the weighing device 22.

[0045] Regarding the detection of particle size, the particle size is related to the activity of the admixture in the slurry. The smaller the particle size, the higher the activity, and the better the application effect on concrete. If the mixing process, raw materials, etc. do not change significantly, the particle size of the corresponding admixture will not fluctuate significantly. Therefore, based on the limitations of existing particle size analysis and testing instruments and considerations of work efficiency, in general, the particle size detection of slurry admixtures will be achieved through sampling at intervals, but if necessary, the method of inspecting each tank can also be implemented. When it is necessary to detect the particle size of concrete slurry admixtures, the connecting hose here can be removed and the corresponding valve 9 on the detection device 2 can be opened or removed to achieve sampling.

[0046] One side of the bottom of the detection device 2 is connected to one end of the first delivery pipe 3, and a valve 9 is installed at this connection;

[0047] The other end of the first delivery pipe 3 is T-shaped, thereby being divided into two ports: a second end and a third end;

[0048] The second end of the first delivery pipe 3 is connected to a trumpet-shaped discharge component 4 and a valve 9 is installed at the connection. The discharge component 4 can be made of stainless steel or PVC. The concrete slurry admixture flows through the first delivery pipe 3 and is discharged from the discharge component 4.

[0049] The third end of the first delivery pipe 3 is connected to the first end of the return pump 5, the second end of the return pump 5 is connected to the second delivery pipe 7 and the storage bin 6, and valves 9 are installed at the connection between the second end of the return pump 5 and the second delivery pipe 7 and the storage bin 6. When the concrete slurry admixture needs to flow into the storage bin 6, the valve 9 at the connection between the second end of the return pump 5 and the second delivery pipe 7 is closed, and the valve 9 at the connection between the second end of the return pump 5 and the storage bin 6 is opened; similarly, when the concrete slurry admixture needs to flow into the second delivery pipe 7, the valve 9 at the connection between the second end of the return pump 5 and the second delivery pipe 7 is opened, and the valve 9 at the connection between the second end of the return pump 5 and the storage bin 6 is closed.

[0050] A valve 9 is installed at the bottom of the storage bin 6. When the concrete slurry admixture stored in the storage bin 6 needs to be used, the corresponding valve 9 can be opened.

[0051] The second delivery pipe 7 is connected to the mixer 1 , and the unqualified concrete paste admixture flows through the second delivery pipe 7 and is transported back to the mixer 1 to be re-stirred and mixed.

[0052] In another embodiment, the second delivery pipe 7 is made of a stainless steel pipe, and a triangular one-way flow blocker 71 is welded inside the second delivery pipe 7, so that the inside of the second delivery pipe 7 forms a cone shape. When the fluid flows into the cone, the flow is accelerated; otherwise, the flow is blocked. Therefore, unqualified slurry admixture can be returned to the agitator through the second delivery pipe, but cannot flow from the agitator to the discharge component 4 or the storage bin 6 through the second delivery pipe, that is, backflow is prevented.

[0053] In another embodiment, a valve 9 is installed at the connection between the second delivery pipe 7 and the agitator 1, and the feeding device 8 is connected to the agitator 1 at this connection.

[0054] When the device is working, the raw materials enter the agitator 1 from the feeding device 8, and the agitator pump 12 drives the agitator blade 11 to agitate the raw materials. After agitation, a concrete slurry admixture is obtained, and the concrete slurry admixture flows into the detection device 2 to detect the uniformity, solid content and particle size of the concrete slurry admixture. If the test is qualified, the concrete slurry admixture can be directly discharged from the first conveying pipe 3 and the discharge component 4 or the return pump 5 is started to convey it into the storage bin 6; if the test is unqualified, the concrete slurry admixture flows through the first conveying pipe 3, the return pump 5, and the second conveying pipe 7 and then flows back to the agitator 1 to be re-stirred and mixed, and this mode is repeated until the test is qualified.

[0055] In another embodiment, the above devices can be connected to a computer by wire or wirelessly and can be uniformly controlled by the computer.

[0056] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are merely preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A device for preparing concrete paste admixture, characterized in that: include: A stirrer, the stirrer comprising a spiral stirring blade, a cavity and a stirring pump; A feeding device, wherein the feeding device is connected to the agitator through a pipeline; A detection device, the detection device is connected to the bottom of the agitator through a connecting pipe, and light sensors are provided on both sides of the inner wall and the bottom of the detection device, a weighing device is provided on the bottom, and a light emitter is installed on the top; the detection device also includes a controller, which controls the start and stop of the light sensor, the weighing device, and the light emitter and receives feedback signals from the light sensor and the weighing device; The bottom of the detection device is connected to the first end of the first delivery pipe, the second end of the first delivery pipe is connected to the discharge component, and the concrete slurry admixture that meets the standards after detection flows through the first delivery pipe and is discharged from the discharge component; The third end of the first delivery pipe is connected to the first end of the return pump; the second end of the return pump is connected to the second delivery pipe; The second delivery pipe is connected to the mixer, and the return pump draws the concrete slurry admixture that does not meet the inspection standards back to the mixer for re-stirring and mixing.

2. A concrete paste admixture preparation device according to claim 1, characterized in that: The interior of the second delivery pipe is provided with a triangular one-way flow blocker, so that the interior of the second delivery pipe forms a cone shape to prevent the concrete slurry admixture from flowing back.

3. The device for preparing concrete paste admixture according to claim 1, characterized in that: The second end of the return pump is connected to the second delivery pipe and the storage bin, and valves are installed at the connections between the second end of the return pump and the second delivery pipe and the storage bin; when the valve at the connection between the second end of the return pump and the second delivery pipe is closed and the valve at the connection between the second end of the return pump and the storage bin is opened, the concrete slurry admixture flows into the storage bin; when the valve at the connection between the second end of the return pump and the second delivery pipe is opened and the valve at the connection between the second end of the return pump and the storage bin is closed, the concrete slurry admixture needs to flow into the second delivery pipe.

4. A concrete paste admixture preparation device according to claim 3, characterized in that: A valve is installed at the bottom of the storage bin, and when the concrete slurry admixture stored in the storage bin needs to be used, the valve is opened.

5. The device for preparing concrete paste admixture according to claim 1, characterized in that: A pressure sensor is arranged inside the weighing device.

6. The device for preparing concrete paste admixture according to claim 1, characterized in that: The light emitter is in the shape of a plate, a tube, a belt or a sphere.

7. The device for preparing concrete paste admixture according to claim 1, characterized in that: A valve is installed at the bottom of the stirrer. The stirrer is detachably connected to one end of the connecting pipe through the valve at the bottom of the stirrer, and the other end of the connecting pipe is detachably connected to the detection device.

8. The device for preparing concrete paste admixture according to claim 1, characterized in that: The stirrer is cylindrical and has a diameter ranging from 1.5 meters to 2.5 meters.

9. The device for preparing concrete paste admixture according to claim 1, characterized in that: The rated speed of the stirring pump during operation is greater than or equal to 1500r / min.

10. The device for preparing concrete paste admixture according to claim 1, characterized in that: The rotation speed of the stirring pump can be controlled to be less than or equal to 100 r / min.

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