Powder storing and conveying system

Abstract

The utility model relates to the technical field of mixing station concrete production, in particular to a powder storage and conveying system which comprises a mixing station, a station front powder tank and a storage tank, the mixing station is connected with the station front powder tank, the station front powder tank is connected with the storage tank, and the storage tank is used for preparing and cooling powder. The storage tank is additionally arranged to be used for being in butt joint with the powder tank car, materials are prepared at the storage tank, and powder is conveyed to the powder tank in front of the station to be used for production after standing for a period of time and cooling at the storage tank; and during the period from material preparation to cooling of the material storage tank, normal feeding of the powder tank in front of the station can be achieved. The powder storing and conveying system can solve the problems that the consumption of the powder tank in front of the station is too large and external transportation supplement is insufficient during large-volume production, the waiting window period of stirring operation is shortened, continuous production is achieved, and the production efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete production in a mixing station, in particular to a powder material storage and conveying system. Background Art

[0002] In concrete mixing plants, commonly used powders include cement, fly ash, mineral powder, etc. During the concrete production process, cement, mineral powder, fly ash and other powders are transported to the powder tanks in front of the station by tank trucks for classification and storage. When the mixing station receives the mixing operation command, the powders that meet the requirements in the corresponding tanks are transported to the mixing station in a certain proportion for mixing.

[0003] The temperature of cement and other powders is generally high when they leave the factory, which can reach 70-80℃, which is not conducive to pre-cooling concrete production. The powder can only be parked in the powder tank in front of the corresponding station and wait for the powder to cool down naturally. The powder can only be used for mixing operations after the temperature reaches the standard. Since it takes a long time for the powder to drop to the required temperature, the production speed of concrete is affected and normal production and supply cannot be guaranteed; in order to shorten the cooling time, the existing technology often uses external spraying or cold water cooling to reduce the time required for powder cooling, but this method is only suitable for small-scale concrete production, and has little effect on cooling powder in large storage tanks. Moreover, this method still takes a long time to cool and cannot be used for mixing production during the cooling period. Therefore, the existing powder conveying system has a long window period and cannot respond to the mixing operation needs in a timely manner, affecting production supply and construction progress. Utility Model Content

[0004] The purpose of the utility model is to provide a powder storage and conveying system that can be used for continuous production in a mixing station in view of the fact that the factory temperature of powder in the prior art is relatively high, and it is necessary to wait until the powder temperature reaches the standard before it can be used for mixing operations. The waiting window time is long, and there is a problem that production and supply are affected.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A powder material storage and conveying system comprises a mixing station, a powder material tank in front of the station and a storage tank, wherein the mixing station is connected to the powder material tank in front of the station, the powder material tank in front of the station is connected to the storage tank, and the storage tank is used for powder material preparation and cooling.

[0007] The utility model adds a storage tank for docking with the powder tank truck and is used to prepare materials at the storage tank. After the powder is left to cool for a period of time at the storage tank, it is transported to the powder tank in front of the station for production. During the period from preparation to cooling of the storage tank, the powder tank in front of the station can be loaded normally. The above-mentioned powder storage and transportation system can solve the problem of excessive consumption of the powder tank in front of the station and insufficient external transportation during large-scale production, which is conducive to shortening the waiting window period of the mixing operation, realizing continuous production, and high production efficiency.

[0008] In addition, by adding storage tanks, powder can be loaded from the storage tanks and then transported to the powder tanks in front of the station for production, which is conducive to reducing the scale of the powder tanks in front of the station, thereby facilitating the optimization of the site layout near the mixing station; it is also conducive to shortening the pipeline layout path from the powder tanks in front of the station to the mixing station, simplifying the layout process and reducing costs.

[0009] As a preferred solution of the utility model, it also includes a main control system, which is used to manage the scheduling production of the mixing station; a first discharge valve is provided at the discharge port of the powder tank in front of the station, and a second discharge valve is provided at the discharge port of the storage tank, and the first discharge valve and the second discharge valve are both connected to the main control system in communication. The main control system controls the opening and closing of the first discharge valve and the second discharge valve, and controls the discharge of the powder tank and the storage tank in front of the station, so as to facilitate remote monitoring and scheduling. In addition, the opening and closing of the first discharge valve and the second discharge valve can also be controlled manually.

[0010] As a preferred solution of the utility model, a first level meter is provided in the powder material tank in front of the station, and a second level meter is provided in the storage tank, and the first level meter and the second level meter are both connected to the main control system for communication. The first level meter and the second level meter are used to detect the powder material levels of the powder material tank in front of the station and the storage tank respectively; according to the monitoring of the first level meter, prepare to deliver the powder from the storage tank to the powder material tank in front of the station; according to the monitoring of the second level meter, issue a low material level warning for the storage tank, so as to facilitate the early notification of the powder material tank truck to transport the powder material and achieve high-efficiency production.

[0011] As a preferred solution of the utility model, the storage tank is connected to the pre-station powder tank through a silo pump, and the silo pump is communicatively connected to the main control system. When the first level meter detects that the material level in the pre-station powder tank drops to the specified position, a command is issued through the main control system to open the discharge port of the storage tank, and drive the silo pump to pump the powder in the storage tank to the pre-station powder tank, automatically replenishing the powder in the pre-station powder tank, so as to respond to the mixing station production in time, thereby realizing continuous production. In the case where a large storage tank has a large floor space, this solution adopts a silo pump pumping method to realize the transportation of powder from a large storage tank to a smaller pre-station powder tank. Compared with the screw conveyor method, it has a large conveying capacity, is more adaptable to complex road conditions, and is economical and practical. Among them, the silo pump pipeline can be made of seamless steel pipes, and can achieve turning at any angle through combined welding; while the screw conveyor is linear and cannot be bent, and the conveying length is limited.

[0012] As a preferred solution of the utility model, the powder tank in front of the station is connected to the mixing station through a screw conveyor, and the screw conveyor is connected to the main control system by communication. The main control system issues a command to open the discharge port of the powder tank in front of the station, and drives the screw conveyor to spirally convey the powder in the powder tank in front of the station that meets the requirements to the mixing station, so as to realize automated production; the use of the screw conveyor can accurately control the conveying amount each time to ensure accurate measurement.

[0013] As a preferred solution of the utility model, a temperature sensor is provided at the powder tank in front of the station, and the temperature sensor is connected to the main control system in communication. The temperature sensor is used to monitor the feeding temperature of the powder in the powder tank in front of the station; only when the detected temperature in the powder tank in front of the station meets the requirements, the powder tank in front of the station is allowed to start feeding. By monitoring the feeding temperature of the powder, it is helpful to adjust the amount of ice added in the mixing station in combination with the feeding temperature of other raw materials, so as to control the concrete discharge temperature within a controllable range and ensure the pouring quality of pre-cooled concrete.

[0014] As a preferred solution of the utility model, the utility model also includes an identifier and an identification card, wherein the identifier is used to identify the production information written into the identification card, the identifier is arranged in front of the storage tank, and the identifier is connected to the main control system in communication; the storage tank is provided with a loading valve, and the loading valve is connected to the main control system in communication, and the main control system controls the opening and closing of the loading valve according to the identification of the identifier. The setting of the identifier and the identification card is used to verify whether the transport vehicle matches the current loading point.

[0015] As a preferred solution of the utility model, the capacity of the storage tank is greater than that of the powder tank in front of the station, and the capacity of the storage tank is 5-8 times that of the powder tank in front of the station. This is conducive to full utilization of the site, and a large amount of raw materials can be stored and cooled in advance.

[0016] As a preferred solution of the utility model, the pre-station powder tank and the storage tank are both closed tanks, and the tops of the pre-station powder tank and the storage tank are both connected and provided with a pulse dust collector. This solution achieves environmentally friendly production by fully enclosing the corresponding tanks for the powder, filtering the powder-gas mixture through the pulse dust collector and exhausting the air to the outside, thereby avoiding dust pollution.

[0017] As a preferred solution of the utility model, several layers of atomizing spray devices are provided around the tank body of the storage tank, and the atomizing spray devices are distributed at the top, middle and bottom of the storage tank to accelerate heat dissipation.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0019] 1. The powder storage and conveying system provided by the utility model can solve the problem of excessive consumption of powder tanks in front of the station and insufficient external transportation during large-scale production, which is beneficial to shorten the waiting window period of mixing operations, realize continuous production, and have high production efficiency.

[0020] 2. The powder storage and conveying system provided by the utility model can realize high-efficiency automatic production and save manpower and material resources.

[0021] 3. The powder storage and conveying system provided by the utility model is green, environmentally friendly and has low economic cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the powder storage and conveying system in Example 1;

[0023] Figure 2 Schematic diagram of the site layout of the powder storage and conveying system in Example 1.

[0024] Icons: 1-mixing station; 2-powder tank in front of the station; 3-storage tank; 4-powder tank truck. DETAILED DESCRIPTION

[0025] The utility model is described in detail below in conjunction with the accompanying drawings.

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] Example 1

[0028] A powder storage and conveying system, such as Figure 1 As shown, it includes a mixing station 1, a powder tank 2 in front of the station and a storage tank 3. The mixing station 1 is connected to the powder tank 2 in front of the station, and the powder tank 2 in front of the station is connected to the storage tank 3. The storage tank 3 is used for powder preparation and cooling.

[0029] By adding a storage tank 3 for docking with the powder tanker 4 and preparing materials at the storage tank 3, the powder is left to cool for a period of time at the storage tank 3 before being transported to the pre-station powder tank 2 for production; during the period of preparation and cooling of the storage tank 3, the pre-station powder tank 2 can be loaded normally. The above-mentioned powder storage and transportation system can solve the problem of excessive consumption of the pre-station powder tank 2 and insufficient external transportation during large-scale production, which is conducive to shortening the waiting window period of the mixing operation, realizing continuous production, and high production efficiency.

[0030] In addition, by adding a storage tank 3, the powder is loaded from the storage tank 3 and then transported to the powder tank 2 in front of the station for production, which is beneficial to reducing the scale of the setting of the powder tank 2 in front of the station, thereby facilitating the optimization of the site layout near the mixing station 1; it is also beneficial to shorten the pipeline layout path from the powder tank 2 in front of the station to the mixing station 1, simplify the layout process and reduce costs.

[0031] Furthermore, the above system also includes a main control system, which is used to manage the production scheduling of the mixing station and realize automated production.

[0032] In this embodiment, the pre-station powder tank 2 and the storage tank 3 both use high-position fully enclosed tanks. The pre-station powder tank 2 uses a 300t silo tank, and the storage tank 3 uses a 1800t silo tank. The tops of the pre-station powder tank 2 and the storage tank 3 are both connected and provided with pulse dust collectors. The pulse dust collectors filter the powder-gas mixture and discharge the air to the outside to avoid dust pollution and achieve environmentally friendly production. The pre-station powder tank 2 and the storage tank 3 are both provided with several for classifying and storing different types of powders; in this embodiment, such as Figure 2 As shown, one mixing station 1 is provided with four pre-station powder tanks 2, of which two pre-station powder tanks 2 are used to store cement, one is used to store fly ash, and one is used to store mineral powder. The pre-station powder tank 2 is connected to the mixing station 1 through a screw conveyor, and the pre-station powder tank 2 is connected to the storage tank 3 through a silo pump, which is convenient for pipeline layout and economical and applicable. The pre-station powder tank 2 is provided with a first discharge valve at the discharge port, a first material level meter is provided at the top, and an embedded temperature sensor is provided at the bottom conical funnel to monitor the feeding temperature of the powder in the pre-station powder tank 2. The storage tank 3 is provided with a feeding pipe for connecting the powder tank truck 4; the feeding port of the storage tank 3 is provided with a feeding valve for controlling the opening and closing of the feeding pipe; the discharge port of the storage tank 3 is provided with a second discharge valve; the storage tank 3 is provided with a second material level meter, and an embedded temperature sensor is also provided at the bottom, and a pulse dust collector is provided at the top. The discharge valves, level meters, temperature sensors, pulse dust collectors, screw conveyors, silo pumps, etc. on the pre-station powder tank 2 and storage tank 3 are all connected to the main control system. In this embodiment, the first level meter and the second level meter are radar level meters, which can be set on the top of the tank body to facilitate accurate detection.

[0033] When the material storage tank 3 is preparing materials, the feeding pipe of the powder tank truck 4 is connected to the feeding pipe of the material storage tank 3, and the feeding valve is opened. The air compressor on the powder tank truck 4 pressurizes the material storage tank 3, so that the powder-gas mixture flows into the storage cavity of the material storage tank 3 through the feeding pipe. The main control system automatically starts the pulse dust collector on the top of the material storage tank 3 according to the opening signal of the feeding valve, filters the powder-gas mixture and discharges most of the air to the outside, and the powdered material is precipitated in the material storage tank 3 for static cooling.

[0034] During this period, the powder tank 2 in front of the station is loaded normally. When the main control system receives the mixing operation command, combined with the temperature monitoring feedback of the temperature sensor, it opens the first discharge valve at the discharge port of the powder tank 2 in front of the station, and synchronously drives the screw conveyor to spirally convey the powder in the powder tank 2 in front of the station that meets the requirements to the mixing station 1 to realize automated production. When the mixing station 1 has undergone multiple-disc mixing operations, when the first level meter detects that the powder in the powder tank 2 in front of the station has dropped to the set position, after the mixing operation of the current plate is completed, the main control system starts the second discharge valve and the silo pump, and the powder in the storage tank 3 that has been statically cooled is pumped to the powder tank 2 in front of the station for replenishment, so as to facilitate timely response to the production needs of the next plate and realize continuous production. According to the monitoring of the second level meter, when the powder in the storage tank 3 drops to the set position, a low material level warning of the storage tank 3 is issued, so that the management personnel can notify the powder tanker 4 in advance to transport the powder for material preparation.

[0035] Furthermore, several layers of atomizing spray devices are arranged around the tank body of the storage tank 3 , and the atomizing spray devices are distributed at the top, middle and bottom of the storage tank 3 , which is beneficial to accelerate the heat dissipation of the tank body.

[0036] This embodiment also includes an identifier and an identification card. The identifier is used to identify the production information written into the identification card. A corresponding identifier is set in front of each storage tank 3, and each identifier is connected to the main control system. The loading valve of the storage tank 3 is also connected to the main control system, and the main control system controls the opening and closing of the loading valve according to the identification of the identifier. If the production information of the identifier and the identification card is verified correctly, the loading valve is opened for loading. If the verification is wrong, an early warning is issued to prevent the wrong loading of materials.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A powder storage and conveying system, characterized in that: The invention comprises a mixing station (1), a powder material tank (2) in front of the mixing station and a storage tank (3), wherein the mixing station (1) is connected to the powder material tank (2) in front of the mixing station, the powder material tank (2) in front of the mixing station is connected to the storage tank (3), the storage tank (3) is used for preparing and cooling powder material, and the powder material tank (2) in front of the mixing station is used for loading the powder material cooled from the storage tank (3).

2. The powder storage and conveying system according to claim 1, characterized in that: It also includes a main control system, which is used to manage the scheduling and production of the mixing station; a first discharge valve is provided at the discharge port of the powder tank (2) in front of the station, and a second discharge valve is provided at the discharge port of the storage tank (3), and the first discharge valve and the second discharge valve are both communicatively connected to the main control system.

3. The powder storage and conveying system according to claim 2, characterized in that: The front-station powder tank (2) is provided with a first material level meter, and the storage tank (3) is provided with a second material level meter, and the first material level meter and the second material level meter are both communicatively connected to the main control system.

4. The powder storage and conveying system according to claim 3, characterized in that: The material storage tank (3) is connected to the pre-station powder material tank (2) via a silo pump, and the silo pump is communicatively connected to the main control system.

5. The powder storage and conveying system according to claim 2, characterized in that: The pre-station powder tank (2) is connected to the mixing station (1) via a screw conveyor, and the screw conveyor is in communication connection with the main control system.

6. The powder storage and conveying system according to claim 2, characterized in that: A temperature sensor is provided at the front-of-station powder tank (2), and the temperature sensor is communicatively connected to the main control system.

7. The powder storage and conveying system according to any one of claims 2 to 6, characterized in that: It also includes an identifier and an identification card, the identifier is used to identify the production information written into the identification card, the identifier is arranged in front of each storage tank (3), and the identifier is communicatively connected to the main control system; the storage tank (3) is provided with a feeding valve, the feeding valve is communicatively connected to the main control system, and the main control system controls the opening and closing of the feeding valve according to the identification situation of the identifier.

8. The powder storage and conveying system according to any one of claims 1 to 6, characterized in that: The capacity of the material storage tank (3) is greater than the capacity of the pre-station powder material tank (2), and the capacity of the material storage tank (3) is 5-8 times the capacity of the pre-station powder material tank (2).

9. The powder storage and conveying system according to any one of claims 1 to 6, characterized in that: The pre-station powder tank (2) and the storage tank (3) are both closed tank bodies, and the tops of the pre-station powder tank (2) and the storage tank (3) are both connected and provided with a pulse dust collector.

10. The powder storage and conveying system according to any one of claims 1 to 6, characterized in that: Several layers of atomizing spray devices are arranged around the tank body of the storage tank (3), and the atomizing spray devices are distributed at the top, middle and bottom of the storage tank (3).

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