Mixing station cold aggregate batching system with double functions of storage and metering

Abstract

The invention discloses a mixing station cold aggregate batching system with double functions of storage and metering, and relates to the technical field of aggregate batching systems. Comprising a weighing module, a stock bin, a stock bin supporting frame and a conveying assembly. A stock bin supporting frame is installed on the bearing face of the weighing module, a stock bin and a conveying assembly are installed on the stock bin supporting frame, materials are stored in the stock bin, a discharging opening for guiding out the materials is formed in the stock bin, and a conveying part of the conveying assembly is located below the discharging opening and used for conveying the guided-out materials. The storage bin supporting frame is installed on the weighing module, the overall weight change is continuously weighed through the weighing module to measure the instantaneous flow rate and the accumulated weight of the materials, and compared with dynamic continuous weighing of a traditional belt scale, the vibration amplitude between the weighing module and the storage bin supporting frame is smaller, measurement is more accurate, and the measurement precision is improved. And the measurement error caused by the conditions of material sliding and the like due to non-uniform impact or accumulation of the materials and inclination of the belt is smaller.

Description

Technical Field

[0001] The present invention relates to the technical field of aggregate batching systems, and particularly to a cold aggregate batching system for a mixing plant with dual functions of storage and metering. Background Art

[0002] Currently, the aggregate batching system is a commonly used device for storing and transporting aggregates during concrete production. The batching hopper is used to store sand, gravel or recycled asphalt mixture with different particle sizes. During operation, different batches of materials are continuously transported to the mixer for mixing according to the grading requirements in proportion. The traditional aggregate batching system uses a belt scale suspended at the hopper outlet for dynamic (continuous) weighing. However, due to the characteristics of the belt scale itself, the belt is always in motion and may experience vibration, elastic deformation and slipping, resulting in a large measurement error, inaccurate aggregate ratio, and thus affecting the quality of the mixture.

[0003] Therefore, the present invention has developed a cold aggregate batching system for a mixing plant with dual functions of storage and metering to solve the above technical problems. Summary of the Invention

[0004] The object of the present invention is to provide a cold aggregate batching system for a mixing plant with dual functions of storage and metering to solve the problems existing in the above prior art, stably weigh the batching, and reduce the measurement error.

[0005] To achieve the above object, the present invention provides the following solution:

[0006] The present invention provides a cold aggregate batching system for a mixing plant with dual functions of storage and metering, including: a weighing module, a silo, a silo support frame and a conveying component;

[0007] The silo support frame is installed on the bearing surface of the weighing module, and the silo and the conveying component are installed on the silo support frame. The silo stores materials, and a discharge port for discharging materials is opened on the silo. The conveying part of the conveying component is located below the discharge port and is used for conveying the discharged materials.

[0008] Preferably, it further includes a controller electrically connected to the weighing module, and the controller is electrically connected to the conveying component.

[0009] Preferably, the conveying component is a suspended feeding belt conveyor; the suspended feeding belt conveyor includes a belt conveyor main body and a conveying belt; the belt conveyor main body drives the conveying belt to rotate; the belt conveyor main body is installed on the silo support frame; the conveying belt is located below the discharge port and is used for transporting the discharged materials.

[0010] Preferably, the controller includes a weighing instrument and a PLC control device; the weighing instrument is electrically connected to the weighing module; the PLC control device is electrically connected to the weighing instrument; the hanging feeding belt conveyor is electrically connected to the PLC control device.

[0011] Preferably, a plurality of legs are provided on the bin support frame; the number of the weighing modules is equal to the number of the legs; each leg is respectively connected to the bearing surface of one of the weighing modules.

[0012] Preferably, four legs are provided on the bin support frame; the four legs are symmetrically arranged to enclose a square or a rectangle.

[0013] Preferably, a material screening device is installed on the bin.

[0014] Preferably, the material screening device is a vibrating screen; the vibrating screen includes an in-bin vibrator and a bin-wall vibrator; the in-bin vibrator is installed in the bin for screening the material; the bin-wall vibrator is installed on the outer wall of the bin for loosening the material adhering to the inner wall of the bin.

[0015] The present invention has achieved the following technical effects compared with the prior art:

[0016] In the present invention, the bin support frame is installed on the weighing module, and the overall weight change is continuously weighed through the weighing module to measure the instantaneous flow rate and cumulative weight of the material. Compared with the dynamic continuous weighing of the traditional belt scale, the vibration amplitude between the weighing module and the bin support frame is smaller, the measurement is more accurate, and the measurement error caused by the situations such as the impact or uneven accumulation of the material and the sliding of the material caused by the inclined belt is smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the overall assembly structure of the present invention.

[0019] Wherein, 1, bin; 2, bin support frame; 3, conveying assembly; 4, weighing module; 5, material screening device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] The purpose of the present invention is to provide a cold aggregate batching system for a mixing plant with dual functions of storage and metering, so as to solve the problems existing in the above-mentioned prior art, stably weigh the batching, and reduce the measurement error.

[0022] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] This embodiment provides a cold aggregate batching system for a mixing plant with dual functions of storage and metering, as Figure 1 shown, including: a weighing module 4, a silo 1, a silo support frame 2, and a conveying assembly 3;

[0024] A silo support frame 2 is installed on the bearing surface of the weighing module 4. A silo 1 and a conveying assembly 3 are installed on the silo support frame 2. Materials are stored in the silo 1. An outlet for discharging materials is opened on the silo 1. The conveying part of the conveying assembly 3 is located below the outlet for conveying the discharged materials; by continuously measuring the weight change on the bearing surface by the weighing module 4, the instantaneous flow rate and cumulative weight of the materials are measured.

[0025] Further, it further includes a controller electrically connected to the weighing module 4, and the controller is electrically connected to the conveying assembly 3;

[0026] Further, the conveying assembly 3 is a hanging feeding belt conveyor; the hanging feeding belt conveyor includes a belt conveyor main body and a conveying belt; the belt conveyor main body drives the conveying belt to rotate; the belt conveyor main body is installed on the silo support frame 2; the conveying belt is located below the outlet for conveying the discharged materials.

[0027] Further, the controller includes a weighing instrument and a PLC control device; the weighing instrument is electrically connected to the weighing module 4; the PLC control device is electrically connected to the weighing instrument; the hanging feeding belt conveyor is electrically connected to the PLC control device.

[0028] The weighing module 4 converts the weight signal into an electrical signal and transmits it to the weighing instrument; the weighing instrument displays the instantaneous flow rate and cumulative weight of the passing material, and the PLC control device controls the speed of the hanging feeding belt conveyor according to the preset addition amount of the material; when the addition amount of the material is excessive, the speed of the hanging feeding belt conveyor is reduced to reduce the addition speed of the material, and when the addition amount of the material is insufficient, the speed of the hanging feeding belt conveyor is increased to increase the addition speed of the material, so as to ensure that the falling weight of the bin 1 per unit time is basically constant.

[0029] The weighing module 4 continuously weighs the overall weight of the bin 1, the bin support frame 2, the conveying component 3 and the material in the bin 1 to detect the instantaneous flow rate and cumulative weight of the material. Compared with the traditional dynamic continuous measurement method of belt scales, the weighing module 4 of the present application is fixedly installed with the bin support frame 2 and is relatively stationary, which is equivalent to being able to perform static continuous measurement, and the measurement effect is more accurate.

[0030] Furthermore, a plurality of legs are provided on the bin support frame 2; the number of weighing modules 4 is equal to the number of legs; each leg is respectively connected to the bearing surface of a weighing module 4.

[0031] As a specific implementation manner of this embodiment, four legs are provided on the bin support frame 2; the four legs are symmetrically arranged to form a square or a rectangle; the lower ends of the four legs are evenly connected to the weighing modules 4, and the instantaneous flow rate and cumulative weight of the material are measured by the cooperative work of multiple weighing modules 4; the four legs are evenly distributed at the four corner points, and a stable support plane can be formed; at the same time, the use of four weighing modules 4 working together can offset the influence of local mechanical vibration or temperature change, making the measurement result more accurate.

[0032] As a specific implementation manner of this embodiment, in order to facilitate the electrical connection between the four weighing modules 4 and the weighing instrument, the four weighing modules 4 are connected to a junction box through cables, the junction box is connected to the weighing instrument through cables, and the weighing instrument is connected to the PLC control device through cables.

[0033] Furthermore, in order to further screen the material and prevent the material from clogging in the bin 1, a material screening device 5 is installed on the bin 1; furthermore, the material screening device 5 is a vibrating screen; the vibrating screen includes an in-bin vibrator and a bin-wall vibrator; the in-bin vibrator is installed in the bin 1 for screening the material; the bin-wall vibrator is installed on the outer wall of the bin 1 for loosening the material adhering to the inner wall of the bin 1.

[0034] As a specific implementation manner of this embodiment, the in-bin vibrator includes a screen and a vibration motor; the vibration motor is installed on the screen and drives the screen to vibrate; there are evenly sized screen holes inside the screen, and the material passes through the screen holes and enters the bin 1; the upper layer of the bin 1 is in the shape of a cuboid or a cube, and the lower layer is in the shape of a funnel that is concave inward; the outer frame shape of the screen is the same as that of the upper layer of the bin 1 and slightly smaller than the upper layer of the bin 1; therefore, the screen can be placed inside the bin 1 and vibrate inside the bin 1. The in-bin vibrator can avoid the material from being blocked in the upper layer of the bin 1 while screening the material.

[0035] As a specific implementation manner of this embodiment, the bin wall vibrator is installed on the outer wall of the bin 1 and is located at the lower layer position of the bin 1 to prevent the material from being blocked and adhered to the lower layer of the bin 1.

[0036] It should be noted that for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0037] Specific examples are used in the present invention to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, there will be changes in the specific implementation manner and application scope according to the idea of the present invention. In summary, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A cold aggregate batching system for a mixing plant with dual functions of storage and metering, characterized in that, Including: a weighing module, a silo, a silo support frame, and a conveying component; The silo support frame is installed on the bearing surface of the weighing module, the silo and the conveying component are installed on the silo support frame, the silo stores materials, a discharge port for discharging the materials is provided on the silo, and the conveying part of the conveying component is located below the discharge port for conveying the discharged materials.

2. The cold aggregate batching system with dual functions of storage and metering according to claim 1, wherein: It further includes a controller electrically connected to the weighing module, and the controller is electrically connected to the conveying component.

3. The cold aggregate batching system of a mixing plant with dual functions of storage and metering according to claim 2, characterized in that: The conveying component is a suspended feeding belt conveyor; the suspended feeding belt conveyor includes a belt conveyor main body and a conveying belt; the belt conveyor main body drives the conveying belt to rotate; the belt conveyor main body is installed on the silo support frame; the conveying belt is located below the discharge port for transporting the discharged materials.

4. The cold aggregate batching system of the mixing plant with dual functions of storage and metering according to claim 3, characterized in that: The controller includes a weighing instrument and a PLC control device; the weighing instrument is electrically connected to the weighing module; the PLC control device is electrically connected to the weighing instrument; the suspended feeding belt conveyor is electrically connected to the PLC control device.

5. The cold aggregate batching system of a mixing plant with dual functions of storage and metering according to claim 1, characterized in that: A plurality of legs are provided on the silo support frame; the number of the weighing modules is equal to the number of the legs; each leg is respectively connected to the bearing surface of one weighing module.

6. The cold aggregate batching system with dual functions of storage and metering according to claim 5, characterized in that: Four legs are provided on the silo support frame; the four legs are symmetrically arranged to enclose a square or a rectangle.

7. A cold aggregate batching system for a mixing plant with dual functions of storage and metering according to claim 1, characterized in that: A material screening device is installed on the silo.

8. A cold aggregate batching system for a mixing plant with dual functions of storage and metering according to claim 7, characterized in that: The material screening device is a vibrating screen; the vibrating screen includes an in-silo vibrator and a silo wall vibrator; the in-silo vibrator is installed in the silo for screening the materials; the silo wall vibrator is installed on the outer wall of the silo for loosening the materials adhering to the inner wall of the silo.

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