A relay cement silo system

Abstract

This utility model belongs to the field of cement storage and conveying technology, and relates to a relay cement silo system, including an inner ring cement silo, an outer ring cement silo, and an electrical control system. The inner and outer ring cement silos are connected by a second screw conveyor. The discharge port of the inner ring cement silo is connected to a first screw conveyor. The inner ring cement silo body is equipped with a second cement silo inlet and a level gauge. The level gauge is installed on the inner wall of the inner ring cement silo below the second cement silo inlet. The second screw conveyor is connected to the second cement silo inlet via a pneumatic butterfly valve. The pneumatic butterfly valve, level gauge, first screw conveyor, and second screw conveyor are all electrically connected to the electrical control system. This utility model requires only one inlet for each screw conveyor, preventing damage to the screw conveyor due to untimely material delivery; the outer ring cement silo automatically replenishes the inner ring cement silo, reducing manpower workload; lowering modification costs; and improving work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of cement storage and transportation technology, specifically relating to a relay cement silo system. Background Technology

[0002] With the increasing sophistication of domestic infrastructure projects, more and more infrastructure construction projects are being initiated in areas with inconvenient transportation. In such cases, due to the difficulty in transporting cement raw materials to the construction site, the method of increasing cement storage is usually adopted to avoid project delays caused by untimely cement supply, or even construction defects caused by discontinuous pouring.

[0003] There are several methods for increasing cement storage capacity on the market: One method involves placing multiple cement silos close to the concrete mixing equipment, with the outer silos surrounding the inner silos. In operation, the inner silos are equipped with dual-inlet screw conveyors to transport cement to the cement scale, while the outer silos are equipped with single-inlet screw conveyors to transport cement to the second inlet of the dual-inlet screw conveyors, which then transport it to the cement scale. However, this method suffers from limitations in the conveying capacity of the dual-inlet screw conveyors. This can lead to situations where both inlets of the dual-inlet screw conveyors feed simultaneously, causing damage and equipment downtime. To avoid this, the conveying capacity of the single-inlet screw conveyors in the outer silos is typically reduced. However, this method does not completely prevent damage to the dual-inlet screw conveyors and significantly reduces the productivity of the concrete mixing equipment.

[0004] Utility model patent CN208497317U discloses a relay-type cement storage and conveying device. A conveying pipe is fixedly connected to one side of a first cement silo, and a conveying valve is installed on the conveying pipe. A second cement silo is fixedly connected to the first cement silo via the conveying pipe. A sealing sleeve is installed at the connection between the conveying pipe and the first and second cement silos to prevent cement from overflowing during filling and transportation, thus more effectively ensuring work efficiency. However, the first cement silo only conveys cement to the second cement silo through a simple clinker pipe, which cannot control the conveying volume and cannot achieve automatic control.

[0005] Therefore, there is an urgent need in the market for a low-cost and highly reliable method or equipment for handling the front and rear overlap of cement silos. Summary of the Invention

[0006] The purpose of this utility model is to provide a relay cement silo system that automatically replenishes materials, reduces the workload of personnel, prevents material spillage, and has low modification costs.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a relay cement silo system, including an inner ring cement silo, an outer ring cement silo, and an electrical control system. The inner ring cement silo and the outer ring cement silo are connected by a second screw conveyor. The discharge port of the inner ring cement silo is connected to a first screw conveyor. The second screw conveyor is used to transport cement from the outer ring cement silo to the inner ring cement silo. The inner ring cement silo is equipped with a second cement silo inlet and a level gauge. The level gauge is installed on the inner wall of the inner ring cement silo below the second cement silo inlet. The second screw conveyor is connected to the second cement silo inlet through a pneumatic butterfly valve. The pneumatic butterfly valve, the level gauge, the first screw conveyor, and the second screw conveyor are all electrically connected to the electrical control system. The electrical control system is used to control the start and stop of the first screw conveyor and the second screw conveyor, as well as the opening and closing of the pneumatic butterfly valve.

[0008] Furthermore, the second inlet of the cement silo is located at the junction of the straight section and the cone of the inner ring cement silo body, and the inclination angle of the second inlet of the cement silo is consistent with the inclination angle of the cone of the inner ring cement silo, so as to prevent material blockage when the second screw conveyor conveys cement to the inner ring cement silo.

[0009] Furthermore, the level gauge is horizontally installed 1 meter below the second inlet of the cement silo.

[0010] Furthermore, the angle between the line connecting the level gauge and the center of the inner cement silo (viewed from above) and the line connecting the second inlet of the cement silo and the center of the inner cement silo (viewed from above) is 90°. On the one hand, the level gauge accurately detects the cement level in the inner cement silo; on the other hand, it prevents the level gauge from being damaged by impact when cement enters the inner cement silo through the second inlet, thus improving the service life of the level gauge.

[0011] Furthermore, the feed end of the first screw conveyor is connected to the discharge port of the inner ring cement silo, and the discharge end of the first screw conveyor is used to transport cement to a designated location.

[0012] Furthermore, the feed end of the second screw conveyor is connected to the discharge port of the outer ring cement silo, and the discharge end of the second screw conveyor is used to transport cement to the second feed port of the cement silo.

[0013] This utility model has the following advantages: The relay cement silo system requires only one feed inlet for each screw conveyor, preventing damage to the screw conveyor due to untimely material delivery; the outer ring cement silo automatically replenishes material to the inner ring cement silo, reducing workload; the outer ring cement silo does not require a low-capacity screw conveyor, ensuring production efficiency; a pneumatic butterfly valve prevents material spillage from the inner ring cement silo at the second feed inlet; the second feed inlet is installed at the junction of the straight section and the cone of the cement silo, avoiding excessive length of the second screw conveyor and excessive equipment footprint; the equipment has a simple structure, suitable for both new equipment purchases and upgrades requiring additional cement silos, without altering the equipment layout or modifying the original screw conveyor, reducing modification costs and improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the relay cement silo system of this utility model.

[0015] Figure 2 yes Figure 1 Enlarged view of the local structure at point A in the middle.

[0016] In the diagram, 1 is the inner cement silo, 2 is the outer cement silo, 3 is the second feed inlet of the cement silo, 4 is the pneumatic butterfly valve, 5 is the level gauge, 6 is the first screw conveyor, 7 is the second screw conveyor, and 8 is the electrical control system. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] like Figure 1 , Figure 2 As shown, a relay cement silo system includes an inner cement silo 1, an outer cement silo 2, and an electrical control system 8. The inner and outer cement silos 1 are connected by a second screw conveyor 7. The discharge port of the inner cement silo 1 is connected to a first screw conveyor 6. The second screw conveyor 7 is used to transport cement from the outer cement silo 2 to the inner cement silo 1. The inner cement silo 1 is equipped with a second cement inlet 3 and a level gauge 5. The second cement inlet 3 is located at the junction of the straight section and the cone of the inner cement silo 1, and the inclination angle of the second cement inlet 3 is consistent with the inclination angle of the cone of the inner cement silo 1. The level gauge 5 is installed on the inner wall of the inner cement silo 1 below the second cement inlet 3, specifically horizontally installed 1 meter below the second cement inlet 3. The angle between the line connecting the level gauge 5 and the center of the inner cement silo 1 in plan view and the line connecting the second cement inlet 3 and the center of the inner cement silo 1 in plan view is 90°. The level gauge 5 is used to monitor the cement storage position in the inner ring cement silo 1 in real time, and works with the electrical control system 8 to control the start and stop of the second screw conveyor 7 and the pneumatic butterfly valve 4 to prevent cement in the inner ring cement silo 1 from spilling out from the second feed inlet 3 of the cement silo.

[0019] The inlet end of the second screw conveyor 7 is connected to the discharge port of the outer ring cement silo 2, and the outlet end of the second screw conveyor 7 is used to transport cement to the second inlet 3 of the cement silo. The inlet end of the first screw conveyor 6 is connected to the discharge port of the inner ring cement silo 1, and the outlet end of the first screw conveyor 6 is used to transport cement to a designated location. The second screw conveyor 7 is connected to the second inlet 3 of the cement silo via a pneumatic butterfly valve 4. The pneumatic butterfly valve 4, the level gauge 5, the first screw conveyor 6, and the second screw conveyor 7 are all electrically connected to the electrical control system 8. The electrical control system 8 is used to control the start and stop of the first screw conveyor 6 and the second screw conveyor 7, as well as the opening and closing of the pneumatic butterfly valve 4.

[0020] The undisclosed components of the inner cement silo 1 and the outer cement silo 2 both adopt conventional structures.

[0021] When the material storage point of the inner ring cement silo 1 is higher than the material level gauge 5, the first screw conveyor 6 starts, the electrical control system 8 locks the pneumatic butterfly valve 4 and the second screw conveyor 7. At this time, the outer ring cement silo 2 does not replenish cement to the inner ring cement silo 1, and the inner ring cement silo 1 is transported to the designated location by the first screw conveyor 6.

[0022] When the material level in the inner cement silo 1 falls below the level gauge 5, the electrical control system 8 automatically opens the pneumatic butterfly valve 4 and the second screw conveyor 7 when the first screw conveyor 6 starts. Simultaneously, the inner cement silo 1 is conveyed to a designated location by the first screw conveyor 6, while the outer cement silo 2 is replenished with cement by the second screw conveyor 7. When the material level in the inner cement silo 1 reaches the level gauge 5 or the first screw conveyor 6 stops working, the electrical control system 8 locks the pneumatic butterfly valve 4 and the second screw conveyor 7.

[0023] The first screw conveyor 6 and the second screw conveyor 7 each only need to be equipped with one feed inlet to prevent damage to the screw conveyor due to untimely material delivery; the outer ring cement silo 2 automatically replenishes material to the inner ring cement silo 1, reducing the workload of personnel; the outer ring cement silo 2 does not need to be equipped with a low-capacity screw conveyor to ensure production efficiency; a pneumatic butterfly valve 4 is configured to prevent material from spilling from the inner ring cement silo 1 at the second feed inlet 3 of the cement silo.

[0024] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention.

[0025] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A relay cement silo system, characterized in that, The system includes an inner cement silo, an outer cement silo, and an electrical control system. The inner and outer cement silos are connected by a second screw conveyor. The discharge port of the inner cement silo is connected to a first screw conveyor. The second screw conveyor is used to transport cement from the outer cement silo to the inner cement silo. The inner cement silo is equipped with a second cement inlet and a level gauge. The level gauge is located on the inner wall of the inner cement silo below the second cement inlet. The second screw conveyor is connected to the second cement inlet via a pneumatic butterfly valve. The pneumatic butterfly valve, the level gauge, the first screw conveyor, and the second screw conveyor are all electrically connected to the electrical control system. The electrical control system is used to control the start and stop of the first and second screw conveyors and the opening and closing of the pneumatic butterfly valve.

2. The relay cement silo system of claim 1, wherein, The second inlet of the cement silo is located at the junction of the straight section and the cone of the inner ring cement silo body, and the inclination angle of the second inlet of the cement silo is consistent with the inclination angle of the cone of the inner ring cement silo.

3. The relay cement silo system of claim 1, wherein, The level gauge is installed horizontally 1 meter below the second inlet of the cement silo.

4. The relay cement silo system of claim 3, wherein, The angle between the line connecting the level gauge and the center of the inner cement silo (viewed from above) and the line connecting the second inlet of the cement silo and the center of the inner cement silo (viewed from above) is 90°.

5. The relay cement silo system of claim 1, wherein, The feed end of the first screw conveyor is connected to the discharge port of the inner ring cement silo, and the discharge end of the first screw conveyor is used to transport cement to a designated location.

6. The relay cement silo system of claim 1, wherein, The feed end of the second screw conveyor is connected to the discharge port of the outer ring cement silo, and the discharge end of the second screw conveyor is used to transport cement to the second feed port of the cement silo.

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