Automatic feeding system of unmanned mixing plant
By introducing an automated feeding system into the concrete mixing plant and utilizing monitoring equipment and control devices, the problem of low efficiency in manual operation in existing technologies has been solved, and automated management and efficient proportioning of aggregates have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY TENTH GRP FOURTH ENG CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-21
AI Technical Summary
The existing concrete mixing plant feeding system lacks intelligent management, requires manual operation, is inefficient, and is inconvenient to manage.
An automated feeding system for unmanned mixing plants is adopted, including a feeding hopper, vibrating screen, storage hopper, conveyor belt and monitoring equipment. The storage status is monitored by cameras, weighing sensors and humidity sensors. Combined with electric telescopic rods and single-chip microcomputer control valves, automated material discharge and proportioning are achieved.
It has achieved automated management of aggregates, improved feeding efficiency and management convenience, ensured the reliability and stability of the mixing plant, and reduced manual intervention.
Smart Images
Figure CN224145020U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material feeding technology for mixing plants, and in particular to an automated material feeding system for unmanned mixing plants. Background Technology
[0002] The basic components of concrete include cement, aggregates (coarse and fine aggregates), water, and admixtures. Cement is the main binding material in concrete, binding the particles together. Water is one of the active components in concrete, used to react and hydrate cement, and participates in the hardening process of the mixture. Admixtures such as fly ash and ground granulated blast furnace slag can improve the durability and crack resistance of concrete.
[0003] Aggregates include coarse aggregates (such as gravel, crushed stone, and pebbles) and fine aggregates (usually sand), which play a role in filling voids, increasing strength, and improving stability in concrete. Depending on the application requirements of the concrete, coarse aggregates (crushed stone) and fine aggregates (sand) generally need to be graded. Concrete gradation refers to the mixing of aggregates of different particle sizes (such as sand and gravel) in a certain proportion to ensure the uniformity of the concrete, improve its strength, reduce its cost, minimize shrinkage and cracking, and guarantee construction quality.
[0004] In existing technologies, concrete mixing and feeding conveyor belts are simple in function, lack intelligent management, require manual operation, and control the output of aggregates of different particle sizes according to the gradation design, which is inefficient and inconvenient to manage. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automated feeding system for unmanned mixing plants.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An automated feeding system for an unmanned mixing plant includes a feeding hopper and a storage hopper. A vibrating screen is provided below the discharge port of the feeding hopper, and a feeding conveyor belt is provided below the vibrating screen. One end of the feeding conveyor belt extends to the top of the storage hopper. A storage monitoring device is provided on the storage hopper, and a valve is provided on the lower side of the storage hopper. A control device is provided on the valve.
[0008] Below the storage hopper is a batching conveyor belt, and at one end of the batching conveyor belt is a discharge conveyor belt. The discharge conveyor belt is equipped with a feeding frame corresponding to the batching conveyor belt, and a dustproof net is provided on the discharge conveyor belt. At one end of the discharge conveyor belt is a discharge cover corresponding to the mixing station.
[0009] Preferably, the storage hopper is provided in multiple sets and arranged in an array on the upper side of the batching conveyor belt. The top of the storage hopper is provided with an electrically operated opening and closing cover, and a shielding canopy is provided above the storage hopper.
[0010] Preferably, the storage monitoring equipment includes a monitoring camera, a weighing sensor, and a humidity sensor. The monitoring camera is installed under the canopy, and the monitoring camera is correspondingly set with the storage hopper.
[0011] A support is provided on the lower side of the storage hopper, the weighing sensor is located between the storage hopper and the support, and the humidity sensor is located inside the storage hopper.
[0012] Preferably, the control device includes an electric telescopic rod and a microcontroller, the electric telescopic rod is correspondingly arranged with the valve, and the weighing sensor is electrically connected to the microcontroller.
[0013] Preferably, the upper side of the batching conveyor belt is provided with a limiting frame, the inner side of the limiting frame is provided with a bulk material rack, and the bulk material rack is correspondingly arranged with the discharge port on the lower side of the storage hopper.
[0014] Preferably, the dustproof net is connected to the feed frame and the discharge hood, and the discharge hood is connected to the feed inlet of the mixing station.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] 1. This utility model has multiple storage hoppers set above the batching conveyor belt for separately storing aggregates and admixtures of different particle sizes. During mixing, the valves of the corresponding storage hoppers are opened and closed as needed to control the discharge amount, making batching management convenient and efficient.
[0017] 2. This utility model monitors the storage hopper and the internal storage status through a storage monitoring device, which serves as the basis for controlling the opening and closing of valves. It also facilitates remote control by management personnel, and makes material replenishment and feeding adjustments convenient and quick, effectively ensuring the reliability and stability of material feeding at the mixing plant. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of an automated feeding system for an unmanned mixing plant proposed in this utility model;
[0019] Figure 2 This is a right-side structural schematic diagram of an automated feeding system for an unmanned mixing plant proposed in this utility model;
[0020] Figure 3 This is a schematic diagram of the storage hopper and batching conveyor belt structure of an automated feeding system for an unmanned mixing plant proposed in this utility model.
[0021] In the diagram: 1. Feeding hopper; 2. Vibrating screen; 3. Feeding conveyor belt; 4. Storage hopper; 41. Electric opening and closing cover; 42. Electric telescopic rod; 43. Valve; 5. Shelter; 6. Batching conveyor belt; 61. Bulk material rack; 62. Material limiting frame; 7. Feeding frame; 8. Discharge conveyor belt. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0023] Reference Figure 1-3 An automated feeding system for an unmanned mixing plant includes a feeding hopper 1 and a storage hopper 4. A material cart or conveyor belt feeds sand and gravel into the feeding hopper 1. A vibrating screen 2 is provided below the discharge port of the feeding hopper 1 to screen the sand and gravel. A feeding conveyor belt 3 is provided below the vibrating screen 2. The screened sand and gravel fall into the feeding conveyor belt 3. One end of the feeding conveyor belt 3 extends above the storage hopper 4 to feed the sand and gravel into the storage hopper 4 for storage.
[0024] A shielding canopy 5 is provided above the storage hopper 4. Storage monitoring equipment is provided on the storage hopper 4, including a monitoring camera, a weighing sensor, and a humidity sensor. The monitoring camera is installed on the lower side of the shielding canopy 5, which shields the storage hopper from sunlight and rain, improving storage reliability and ensuring the normal operation of the monitoring camera. The monitoring camera is set up corresponding to the storage hopper 4, and monitors the storage status of aggregates in the storage hopper 4 through images, which is convenient for managers to remotely inspect and monitor. A support is provided on the lower side of the storage hopper 4, and the weighing sensor is set between the storage hopper 4 and the support to monitor the total weight of the storage hopper 4 and the aggregates stored inside, indirectly determining the loading weight or unloading weight. The humidity sensor is set inside the storage hopper 4 to detect the humidity of the stored aggregates.
[0025] A valve 43 is provided on the lower side of the storage hopper 4. A control device is provided on the valve 43 to control the opening and closing of the valve 43. The control device includes an electric telescopic rod 42 and a microcontroller. The electric telescopic rod 42 is correspondingly set with the valve 43. One end of the electric telescopic rod 42 is connected to the valve 43. When it extends or retracts, it pulls the valve 43 to open or close. The weighing sensor is electrically connected to the microcontroller. The weighing sensor monitors the overall weight of the storage hopper 4 and transmits the corresponding data to the microcontroller. The data is converted from analog to digital and processed by software as the data basis for controlling the electric telescopic rod 42 to realize automated material discharge.
[0026] The top of the storage hopper 4 is equipped with an electric opening and closing cover 41, which is opened and closed by electric control, making it convenient to close and seal after adding aggregate. The storage hopper 4 is equipped with a batching conveyor belt 6 below it. The storage hopper 4 is equipped with multiple sets and is arranged in an array on the upper side of the batching conveyor belt 6. The upper side of the batching conveyor belt 6 is equipped with a limiting frame 62 to prevent aggregate from accumulating and overflowing the conveyor belt. The inner side of the limiting frame 62 is equipped with a material distribution rack 61, which is correspondingly set with the discharge port on the lower side of the storage hopper 4 to disperse the falling aggregate and evenly fall onto the conveyor belt.
[0027] One end of the batching conveyor belt 6 is equipped with a discharge conveyor belt 8. The discharge conveyor belt 8 is equipped with a feeding frame 7 corresponding to the batching conveyor belt 6. The discharge conveyor belt 8 is covered with a dustproof net. One end of the discharge conveyor belt 8 is equipped with a discharge cover corresponding to the mixing station. The dustproof net connects the feeding frame 7 and the discharge cover to avoid dust pollution during the conveying process. The discharge cover is connected to the feed inlet of the mixing station to ensure that the aggregate falls into the feed inlet of the mixing station.
[0028] In this embodiment, coarse aggregate and fine aggregate are added to the feeding hopper 1 respectively and screened by the vibrating screen 2. The screened gravel, crushed stone, pebbles or sand are temporarily stored in different storage hoppers 4.
[0029] As needed, the feeding hopper 1, vibrating screen 2 and feeding conveyor belt 3 can be fixedly installed, with multiple sets set up to correspond to different storage hoppers 4, to meet the screening requirements of gravel, crushed stone, pebbles or sand, or integrated and installed on a movable frame for easy movement and position adjustment. By changing the screen of vibrating screen 2, the screening of aggregates of different particle sizes can be met.
[0030] The microcontroller is connected to the background management computer to realize automated monitoring and management. When a production demand occurs, the management personnel issue a feeding instruction through the computer. The electric telescopic rod 42 opens the valve 43 on the lower side of the corresponding aggregate storage hopper 4, and the aggregate of the corresponding particle size required for mixing falls onto the batching conveyor belt 6, is transported to the discharge conveyor belt 8, and finally sent to the mixing station.
[0031] During the discharge process, the weighing sensor monitors the overall weight of the storage hopper 4. When the weight reduction reaches the requirement for mixing aggregates, the electric telescopic rod 42 controls the valve 43 to close, and other aggregates of different particle sizes are fed into the hopper.
[0032] When the total weight of the storage hopper 4 and the aggregate inside it approaches the weight of the storage hopper 4 itself, the management computer will remind the personnel to check the storage quantity through the monitoring camera, so that the management personnel can arrange for the aggregate to be replenished in a timely manner.
[0033] Bulk cement is stored in cement silos and transported directly to the mixing plant through pipelines during mixing to avoid contact with the outside environment, moisture, and caking, which would affect the quality of the concrete.
[0034] In addition, admixtures such as fly ash and finely ground slag can be stored in storage hoppers to achieve automatic proportioning and feeding, enabling unmanned and automated operation of the mixing plant.
[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0037] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
Claims
1. An unmanned mixing station automatic feeding system, comprising a feeding hopper (1) and a storage hopper (4), characterized in that, Below the discharge port of the feeding hopper (1) is a vibrating screen (2), and below the vibrating screen (2) is a feeding conveyor belt (3). One end of the feeding conveyor belt (3) extends to the top of the storage hopper (4). The storage hopper (4) is equipped with a storage monitoring device. The storage hopper (4) is equipped with a valve (43) on its lower side. The valve (43) is equipped with a control device. Below the storage hopper (4) is a batching conveyor belt (6), and at one end of the batching conveyor belt (6) is a discharge conveyor belt (8). The discharge conveyor belt (8) is provided with a feeding frame (7) corresponding to the batching conveyor belt (6), and a dustproof net is provided on the discharge conveyor belt (8). At one end of the discharge conveyor belt (8) is a discharge cover corresponding to the mixing station.
2. The unmanned mixing station automated feeding system according to claim 1, wherein, The storage hopper (4) is provided in multiple sets and is arranged in an array on the upper side of the batching conveyor belt (6). The top of the storage hopper (4) is provided with an electric opening and closing cover (41), and the storage hopper (4) is provided with a shielding canopy (5).
3. The unmanned mixing station automated feeding system according to claim 2, wherein, The storage monitoring equipment includes a monitoring camera, a weighing sensor and a humidity sensor. The monitoring camera is installed on the underside of the shield (5) and is set up in correspondence with the storage hopper (4). The storage hopper (4) is provided with a support on its lower side, the weighing sensor is located between the storage hopper (4) and the support, and the humidity sensor is located inside the storage hopper (4).
4. The unmanned mixing station automated feeding system according to claim 3, wherein, The control device includes an electric telescopic rod (42) and a microcontroller. The electric telescopic rod (42) is correspondingly set with the valve (43), and the weighing sensor is electrically connected to the microcontroller.
5. The unmanned mixing station automated feeding system of claim 1, wherein, The material conveyor belt (6) is provided with a limiting frame (62) on the upper side, and a bulk material rack (61) is provided inside the limiting frame (62). The bulk material rack (61) is correspondingly set with the discharge port on the lower side of the storage hopper (4).
6. The unmanned mixing station automated feeding system of claim 1, wherein, The dustproof net connects the feed frame (7) and the discharge hood, and the discharge hood is connected to the feed inlet of the mixing station.