CN117022969A - Sand and stone finished product bin feeding device and control method - Google Patents

Abstract

The application relates to the technical field of concrete production, in particular to a sand and stone finished product bin feeding device and a control method. The finished sand and stone materials are buffered in different buffer storage bins according to the specifications, the time-sharing and sectional discharging of the materials with different specifications is realized by controlling the discharging, then the materials are conveyed to a raw material stacking area through a bucket elevator and a belt conveyor C, and the materials with different specifications are fed to the corresponding finished storage bins in a time-sharing and sectional manner by controlling the feeding in the raw material stacking area. The feeding device is compact in structure, reduces occupied area and equipment cost, realizes dust and noise control through reasonable equipment arrangement, is beneficial to environmental protection, and realizes sharing of the belt conveyor C by time-sharing and sectional feeding of the finished product bin through time-sharing and sectional discharging of the buffer bin through reasonable process regulation and control, so that equipment investment is reduced through process regulation and control while material conveying is ensured, and production cost of enterprises is effectively reduced.

Description

A kind of sand and gravel finished product silo feeding device and control method

Technical field

The invention relates to the technical field of concrete production, and in particular to a sand and gravel finished product silo feeding device and a control method.

Background technique

In the process of concrete production, sand and gravel materials need to be used. In the process, sand and gravel materials of different specifications need to be used according to actual needs. In actual production, sand and gravel materials of various levels are prepared through crushing, screening, washing and other sections. Preparation Good sand and gravel materials will be cached through the cache silo, and then transported to the finished product silo in the raw material storage area through a series of transfers. This is determined by the layout of the factory. The raw materials stacked in the finished product silo will have a negative impact on subsequent It also brings convenience to use.

For the existing transportation of various grades of sand and gravel, usually there is a belt conveyor for each specification of sand and gravel. Therefore, in order to transport various specifications of sand and gravel, multiple belt conveyors need to be equipped. The belt conveyor Due to the long conveying distance of the machine, not only the manufacturing cost is very high, but also the energy consumption is high, and the layout and installation are difficult. This greatly increases the space occupation, installation and use costs of the equipment, making it inconvenient for enterprises to reduce production costs.

Therefore, in the actual production and transfer process of sand and gravel, through reasonable space layout and scientific and effective process control, the installation and use costs of equipment can be effectively reduced, thereby effectively reducing the production cost of the finished product silo feeding device and control Methods are existing problems that need to be solved.

Contents of the invention

The object of the present invention is to provide a feeding device and a control method for a finished sand and gravel silo to solve the problem of the large equipment footprint and numerous equipment arrangements during the transportation process of the existing finished sand and gravel bins in the raw material stacking area, thus causing the factory building to be inconvenient The cost of land space and the high cost of equipment use, installation and maintenance.

In order to achieve the above object, the present invention adopts the following technical solution: a sand and gravel finished product silo feeding device, including a cache silo. The cache silos are arranged in the raw material production area and are arranged with multiple cache silos. Each cache silo is divided into time-sharing units. Section discharge, a bucket elevator is installed below the cache silo. The discharge end of the bucket elevator matches the belt conveyor C. There is only one belt conveyor C. The belt conveyor C goes to the raw material stacking area. There are multiple finished product silos arranged in the raw material stacking area. The finished product silos correspond to the cache silos one by one. A plow unloader is installed on the belt conveyor C. The belt conveyor C distributes materials to each finished product silo through the plow unloader. Feeding in stages.

Further, the discharge port of the cache silo is arranged in the pit, and a belt conveyor A is installed below the discharge port. There are one or more belt conveyors A, and each belt conveyor A corresponds to one or more belt conveyors. There are multiple cache silos, the discharge end of belt conveyor A feeds belt conveyor B, and the discharge end of belt conveyor B feeds the feed end of the bucket elevator.

Furthermore, a weight-type material level meter is installed above the cache silo, and an electro-hydraulic fan-shaped discharge gate is installed at the outlet of the cache silo.

Further, the belt conveyor C is arranged above the finished product silo through a steel structure bracket, and a belt conveyor D is arranged below the plow unloader. The belt conveyor D feeds the corresponding finished product silo.

Furthermore, the tail discharge end of the belt conveyor C directly matches the belt conveyor D.

A sand and gravel finished product silo supply control method is characterized by including the following steps:

S1. Connect the hammer level gauge, electro-hydraulic sector discharge gate, belt conveyor A, belt conveyor B, bucket elevator, belt conveyor C, plow unloader and belt conveyor D to the PLC control system respectively. ;

S2. Open the electro-hydraulic fan-shaped discharge gate at the outlet of the corresponding cache silo according to the material level signal detected by the hammer-type material level meter. The belt conveyor A corresponding to the outlet is started to transport the material to the belt. Machine B;

S3, belt conveyor B, bucket elevator and belt conveyor C remain open to transport materials to the raw material stacking area;

S4. The plow unloader above the finished product silo corresponding to the specifications of the cache silo in S2 moves, and the corresponding belt conveyor D starts at the same time to transport the materials to the corresponding finished product silo;

S5. The hammer-type material level gauge detects that the material in the cache silo in S2 is lower than the set value, and the corresponding electro-hydraulic fan-shaped discharge gate is closed. After a certain delay, the belt conveyor A is closed;

S6. Open the electro-hydraulic fan-shaped discharge gate at the outlet of the corresponding buffer silo according to the material level signal detected by the hammer-type material level meter. The belt conveyor A corresponding to the outlet is started to transport the material to the belt. Machine B;

S7. Repeat step S3. After the plow unloader and belt conveyor D pass the same delay time as in S5, the plow unloader returns to its original position, the belt conveyor D closes, and then the plow unloader and belt conveyor D corresponding to the cache silo specifications in S6 The plow unloader above the finished product silo moves, and the corresponding belt conveyor D starts at the same time to transport the materials to the corresponding finished product silo;

S8. Repeat steps S5-S7 to realize the feeding cycle.

Furthermore, in the above-mentioned S2 and S6, the electro-hydraulic fan-shaped discharge gate at the outlet of the cache silo with the largest amount of material is opened first.

Further, in the above-mentioned S5-S6, if the later cache silo and the previous cache silo share a belt conveyor A, the belt conveyor A will not be closed, otherwise the belt conveyor A will be closed.

Furthermore, in the above-mentioned S5 and S7, the delay time needs to be reasonably adjusted according to the actual operating conditions to ensure that there is no residual material on the belt conveyor A and that the boundaries between materials of various specifications in subsequent transportation are clear.

Furthermore, in the above-mentioned S4 and S7, if the material is transported to the finished product silo at the tail discharge end of the belt conveyor C, only the corresponding belt conveyor D will be started.

Beneficial effects of the present invention:

1. Through the time-sharing and segmented output of different levels of materials in the cache silo, and then the corresponding time-sharing and segmented input of different levels of materials in the raw material stacking area, the operating efficiency of each equipment is improved in the process and reduces Reduce the idle rate of equipment, effectively reduce the cost of equipment purchase, installation, use and maintenance, and play a positive role in improving production efficiency and reducing production costs;

2. The discharge port of the cache silo is located below the ground, which can effectively eliminate dust and reduce noise, which is of great significance to environmental protection.

Description of the drawings

Figure 1 is a schematic front view of material transfer in the cache silo in the raw material production area of the present invention;

Figure 2 is a schematic top view of material transfer in the cache silo in the raw material production area of the present invention;

Figure 3 is a schematic front view of the raw material stacking area supplying materials to the finished product silo according to the present invention;

Figure 4 is a schematic front view of the plow unloader on the belt conveyor C of the present invention;

Figure 5 is a schematic diagram of the feeding flow of the finished product silo in the raw material stacking area according to the present invention.

The names corresponding to each mark in the picture:

1. Hardened floor; 2. Pit; 3. Lifting trough; 4. Cache silo; 41. Feed port; 42. Discharge port; 43. Hammer-type material level meter; 44. Electro-hydraulic sector unloader Material gate; 5. Belt conveyor A; 6. Belt conveyor B; 7. Bucket elevator; 8. Belt conveyor C; 81. Plow unloader; 9. Belt conveyor D; 10. Finished product silo; 101. Steel structural supports.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in Figure 1-5, a pit 2 is constructed in the raw material production area. A reinforced concrete hardened floor 1 is laid on the pit 2. A cache silo 4 is arranged and installed on the ground 1. The cache silo 4 There are six, respectively used to store sand and gravel materials of different specifications.

A feed port 41 is provided on the cache silo 4, and a discharge port 42 is provided below the cache silo 4. The discharge port 42 extends downward into the pit 2, and a heavy load is installed on the cache silo 4. Hammer-type material level gauge 43, and an electro-hydraulic fan-shaped discharge gate 44 is installed at the discharge port 42.

A belt conveyor A5 is arranged below the discharge port 42 of the buffer silo 4. There are two belt conveyors A5 and they are arranged symmetrically according to the position of the buffer silo 4. A belt conveyor B6 is arranged below the intersection of the two belt conveyors A5. A material lifting chute 3 is provided below the output end of the belt conveyor B6, a bucket elevator 7 is installed at the material lifting chute 3, and a belt conveyor C8 is installed at the discharge point of the bucket elevator 7.

The belt conveyor C8 leads to the raw material stacking area. There is a finished product silo 10 in the raw material stacking area. A steel structure bracket 101 is arranged on the finished product silo 10. The belt conveyor C8 is supported and fixed by the steel structure bracket 101. On the belt A plow unloader 81 is arranged on the machine C8, and a belt conveyor D9 is arranged below the plow unloader 81. The belt conveyor D9 transports materials of various specifications to the corresponding finished product silo 10.

The principle of the invention is:

The finished sand and gravel from the crushing, screening and washing sections are classified and stored in the cache silo 4. During the process, there are multiple cache silos 4, which can be used to classify and store sand and gravel materials of different specifications. The cached sand and gravel materials are then passed through A series of transfers are carried to the finished product silo 10 for stacking.

During the process, the weight-type material level gauge 43 can be used to measure the amount of material in each cache silo 4, and the measurement results are transmitted to the PLC control system. The electro-hydraulic fan-shaped discharge gate 44 at the bottom of the bin 4 is opened. During the process, the electro-hydraulic fan-shaped discharge gate 44 at the bottom of the cache bin 4 with the largest amount of material is opened first, so the materials in the corresponding cache bin 4 will fall. to the belt conveyor A5. At this time, the material in the cache silo 4 will continue to decrease. During the whole process, the weight level meter 43 will measure the amount of material at intervals. When the amount of material is low, At the set value, the electro-hydraulic fan-shaped discharge gate 44 is closed at this time, the buffer bin 4 stops discharging, and then switches to another buffer bin 4 for discharging.

When switching between sand and gravel materials of different specifications, the electro-hydraulic fan-shaped discharge gate 44 at the bottom of the rear buffer silo 4 needs to be delayed for a certain period of time and then opened. In actual production, the delay is 30 to 60 seconds. In order to have obvious separation between different grades of sand and gravel, on the other hand, it also avoids long-term idling of the equipment and effectively controls energy consumption.

The sand and gravel coming out of the cache silo 4 is transported to the belt conveyor B6 through the belt conveyor A5, and then transported to the bucket elevator 7, lifted by the bucket elevator 7, and then transported to the raw material stacking area through the belt conveyor C8. In the process Reasonable factory layout not only reduces the cost of factory floor space, but also controls dust and noise, which helps protect the environment. Through this time-sharing and segmented transportation mode, the belt By sharing the belt conveyor C8, different levels of materials can be conveyed through one belt conveyor C8, effectively reducing the equipment and its use and maintenance costs.

By arranging and installing the plow unloader 81 on the belt conveyor C8, the time-sharing and segmented output of the finished product raw materials is realized. During the process, the plow unloader 81 corresponds to the cache silo 4. For example, when the cache silo A is started, the finished product The plow unloader 81 above the bin A moves and cuts off the material on the belt conveyor C8, so that all the materials discharged from the buffer bin 4 can be transported to the finished product bin A, and so on, you can To realize the classified storage of materials of different levels, it should be noted that there is no need to install a plow unloader 81 at the end of the belt conveyor C8, that is, the number of plow unloaders 81 is one less than the number of finished product silos 10. At the same time, In the process of switching raw materials of various levels, a small amount of doping of different levels of sand and gravel materials will inevitably occur. However, for hundreds or thousands of tons of sand and gravel raw materials, this small amount of doping is negligible and cannot be ignored. Will have any impact on concrete production.

In the above process, the weight level gauge 42 is an intermittent measurement type material level gauge, the electro-hydraulic sector discharge gate 44 is an electro-hydraulic gate, the bucket elevator 7, the plow discharger 81 and each belt conveyor are It is widely used in the field of concrete production and is an existing mature technology. It is not difficult for those skilled in the art to understand. Its structure, principle and usage will not be described in detail here. At the same time, the above-mentioned PLC control system is a simple PLC control. The existing mature technology is not difficult for those skilled in the art to understand, and will not be described in detail.

The invention has obvious environmental protection and economic benefits. The structural design of the pit 2 is adopted in the process. On the one hand, it can effectively reduce the dust generated when the sand and gravel are discharged, which is beneficial to environmental protection. At the same time, the noise during the production process is also reduced to a certain extent. In addition, the cache silo 4 transports materials to the finished product silo. In the process, a main belt conveyor C8 is required. Therefore, the process can not only greatly reduce the equipment cost, but also effectively reduce energy consumption. Relatively Compared with the existing layout, the energy consumption is reduced by about 500 to 1000kw, and the energy consumption is reduced by about half, which plays a positive role in reducing production costs.

The present invention is not limited to the above-mentioned best embodiment. Anyone can produce various other forms of products under the inspiration of the present invention. However, regardless of any changes in its shape or structure, any product with the same or similar properties as the present invention can be made. Similar technical solutions all fall within the protection scope of the present invention.

Claims (10)

1. Sand and stone finished product feed bin feedway, its characterized in that: including buffering feed bin (4), buffering feed bin (4) set up in the raw materials production area and arranged a plurality of, each buffering feed bin (4) timesharing segmentation ejection of compact, be provided with bucket elevator (7) in the below of buffering feed bin (4), bucket elevator (7) discharge end and belt feeder C (8) cooperate, belt feeder C (8) have and only one, belt feeder C (8) go to the raw materials and stack the district, a plurality of finished product feed bins (10) have been arranged in the raw materials and stack the district, finished product feed bin (10) and buffering feed bin (4) one-to-one, install plow discharger (81) on belt feeder C (8), belt feeder C (8) are through plow discharger (81) to each finished product feed bin (10) timesharing segmentation feeding.

2. The sand and gravel finished product bin feeding device according to claim 1, wherein: the utility model provides a feeding machine, including buffer storage feed bin (4), pit (2), belt feeder A (5) is installed in arranging in the below of discharge gate (42), belt feeder A (5) have arranged one or more, every belt feeder A (5) corresponds one or more buffer storage feed bin (4), the discharge end of belt feeder A (5) carries out the feed to belt feeder B (6), the discharge end of belt feeder B (6) carries out the feed to the feed end of bucket elevator (7).

3. The sand and gravel finished product bin feeding device according to claim 1, wherein: the heavy hammer type material level meter (43) is arranged above the cache storage bin (4), and an electro-hydraulic fan-shaped discharge gate (44) is arranged at a discharge hole (42) of the cache storage bin (4).

4. The sand and gravel finished product bin feeding device according to claim 1, wherein: the belt conveyor C (8) is arranged above the finished product bin (10) through a steel structure bracket (101), the belt conveyor D (9) is arranged below the plow discharger (81), and the belt conveyor D (9) feeds the corresponding finished product bin (10).

5. The sand and gravel product bin feeding device according to claim 5, wherein: the tail discharge end of the belt conveyor C (8) is directly matched with the belt conveyor D (9).

6. A method of controlling the feed of a sand and gravel product bin of a feeder according to claims 1 to 5, comprising the steps of:

s1, respectively connecting a weight type material level gauge (43), an electrohydraulic fan-shaped discharge gate (44), a belt conveyor A (5), a belt conveyor B (6), a bucket elevator (7), a belt conveyor C (8), a plow discharger (81) and a belt conveyor D (9) into a PLC control system;

s2, opening an electrohydraulic fan-shaped discharge gate (44) at a discharge port (42) of a corresponding buffer storage bin (4) according to a material level signal detected by a weight type material level meter (43), starting a belt conveyor A (5) corresponding to the discharge port (42), and conveying materials to a belt conveyor B (6);

s3, the belt conveyor B (6), the bucket elevator (7) and the belt conveyor C (8) are kept normally open, and materials are conveyed to a raw material stacking area;

s4, a plow discharger (81) above a finished product bin (10) corresponding to the specification of the cache bin (4) in the S2 acts, and a corresponding belt conveyor D (9) is started to convey materials to the corresponding finished product bin (10);

s5, detecting that the materials in the cache bin (4) in the S2 are lower than a set value by a weight type material level meter (43), closing a corresponding electrohydraulic fan-shaped discharge gate (44), and closing a belt conveyor A (5) after a certain time delay;

s6, opening an electrohydraulic fan-shaped discharge gate (44) at a discharge port (42) of a corresponding buffer storage bin (4) according to a material level signal detected by a weight type material level meter (43), starting a belt conveyor A (5) corresponding to the discharge port (42), and conveying materials to a belt conveyor B (6);

s7, repeating the step S3, after the plow discharger (81) and the belt conveyor D (9) have the same delay time as in the step S5, returning the plow discharger (81) to the original position, closing the belt conveyor D (9), then acting the plow discharger (81) above the finished product bin (10) corresponding to the specification of the cache bin (4) in the step S6, and simultaneously starting the corresponding belt conveyor D (9) to convey the material to the corresponding finished product bin (10);

s8, repeating the steps S5-S7 to realize the feeding circulation.

7. The method for controlling the feeding of the sand finished product bin according to claim 6, wherein the method comprises the following steps: in the S2 and the S6, the electrohydraulic fan-shaped discharge gate (44) at the discharge hole (42) of the caching bin (4) with the largest material quantity is preferentially opened.

8. The method for controlling the feeding of the sand finished product bin according to claim 6, wherein the method comprises the following steps: in the steps S5-S6, if the latter cache bin (4) and the former cache bin (4) share one belt conveyor A (5), the belt conveyor A (5) is not closed, and otherwise, the belt conveyor A (5) is closed.

9. The method for controlling the feeding of the sand finished product bin according to claim 6, wherein the method comprises the following steps: in the steps S5 and S7, the delay time is required to be reasonably adjusted according to the actual running condition, so that no residual materials are ensured on the belt conveyor A (5), and the boundaries among the materials with various specifications in the follow-up conveying are clear.

10. The method for controlling the feeding of the sand finished product bin according to claim 6, wherein the method comprises the following steps: in the steps S4 and S7, if the materials are conveyed to a finished product bin (10) at the tail discharge end of the belt conveyor C (8), only the corresponding belt conveyor D (9) is started.