CN201654549U - Grain depot intelligent ventilation system - Google Patents

Abstract

The utility model relates to an intelligent ventilation system for a grain depot, which includes a ventilation louver mechanism, a control mechanism and a detection mechanism. The three mechanisms are connected by wires. The ventilation window movement window is hinged on the surface and the inner surfaces on both sides, and the ends of the two vertical sections of the ventilation window movement window are hinged with drive links through pull rods, and each drive link is welded on the same drive shaft. The other end of the drive shaft is connected with a worm gear mechanism, the worm gear mechanism is connected with a drive motor, the drive motor is connected with the control mechanism, one end of the worm gear mechanism is connected with a position detection device, and the bearing support, the worm gear mechanism and the position detection device are all equipped with On the installation base plate, a PLC control system is arranged in the control mechanism, and a touch screen is arranged on the outer surface of the control mechanism. The utility model has the advantages of low working intensity, high efficiency, high degree of automation and high reliability.

Description

Grain Depot Intelligent Ventilation System

Technical field:

The utility model relates to a grain storage management system, which is a system capable of automatically realizing the intelligent ventilation control of the grain storage.

Background technique:

As an important strategic material of the country, grain reserves have assumed important responsibilities in maintaining the grain market and social stability, protecting the interests of farmers, and ensuring national security. Our government has always regarded the management of grain reserves as an important economic task. Since 1998, the central treasury has continuously invested in treasury bonds in three batches to build a national grain reserve depot. At this stage, the conditions of my country's grain storage and storage facilities have been greatly improved. The grain reserves are basically stored in warehouses with good conditions, and the quantity and quality of the grain reserves are gradually guaranteed reliably. At present, in the warehouse directly under China Grain Storage, the level of grain storage technology has been significantly improved, and technical transformation has also been carried out on the hardware, and the storage and ancillary facilities have been greatly improved. The results of grain inventory inspections in recent years show that the quality of grain reserves has reached a relatively good level, providing the market with safer, high-quality, and green grain sources. At the same time, the cost of grain reserves is directly related to the national financial cost burden. In the process of grain storage, management costs must be reduced to ensure the preservation and appreciation of state-owned assets. It is particularly important to strengthen the quality of employees, strengthen the management facilities of grain reserves, and improve the management level of grain reserves and the quality of grain reserves.

Insects, mildew, and rats are the most serious hazards in the grain storage process. Storage pests cause grain piles to heat up, even mildew, and even moth-eaten embryos of grain grains cannot germinate normally, causing serious economic losses. In addition to the quality of food, the loss also causes the loss of food nutritional value and the reduction of sanitary conditions, which affects human health. In order to improve the stability of grain storage, reduce quality loss, delay aging, and create a green and safe grain project, it is necessary to detect the temperature, humidity and other indicators of grain, and manage them in time. According to the test results and the climate ventilation outside the grain depot in real time, it is a kind of more common management methods.

At present, skylight vents are mostly used for ventilation in grain depots, which are opened manually to achieve ventilation. Although this method can meet certain ventilation requirements, it has many disadvantages. For example, a standard grain depot has as many as 20 ventilation openings. When opening and closing, the management personnel are labor-intensive and time-consuming, and it is difficult to make quick adjustments when the climate suddenly changes. Response, the judgment of the external weather relies on manual implementation, and the reliability is low. At present, the traditional ventilation system methods are: (1) Indoor open type. After the grain storage in the warehouse is full, the ventilation window is opened by stepping on the grain, which brings the disadvantage of high strength. At the same time, it must be realized after the grain storage is full; ( 2) The outdoor open type, in order to solve the disadvantage that the grain can only be ventilated after the grain storage is full, the ventilation window is opened from the outside through the linkage mechanism. The labor intensity of the management personnel in this way is still very high. (3) Electric drive type, this method mainly uses electric motors instead of labor, which reduces the intensity of the operation of the management personnel, but still requires the management personnel to go to the position of each ventilation window to realize the operation, the work is cumbersome, and the efficiency is low. At present, some grain depots have adopted this method to realize ventilation.

Invention content:

The purpose of the utility model is to overcome the above disadvantages and provide an intelligent ventilation system for grain depots with low working intensity, high efficiency, high degree of automation and high reliability.

The purpose of this utility model is achieved through the following technical solutions: an intelligent ventilation system for grain depots, including a ventilation louver mechanism, a control mechanism and a detection mechanism, between the louver mechanism and the control mechanism, between the control mechanism and the The detection mechanisms are all connected by wires. The ventilation louver mechanism includes a fixed window frame of the ventilation window. The bottom inner surface of the fixed window frame of the ventilation window and the inner surfaces of both sides are hinged with a moving window of the ventilation window. The moving window of the ventilation window consists of two sections. The vertical part is composed of a horizontal part, and the horizontal part is arranged between the two vertical parts. The ends of the two vertical parts of the ventilation window movement window are hinged with vertically arranged drive links through pull rods, and each The drive connecting rods are all welded on the same horizontally placed drive shaft, one end of the drive shaft is provided with a first bearing support, the other end of the drive shaft is connected with a worm gear mechanism, and the drive shaft close to the worm gear mechanism One end is provided with a second bearing support, the vertical direction of the worm gear and worm mechanism is connected with a drive motor, the drive motor is connected with the control mechanism, and one end of the horizontal direction of the worm gear and worm mechanism is connected with a position detection device, the bearing support, the worm gear and worm mechanism and The position detection devices are all arranged on a horizontal installation base plate, a PLC control system is arranged in the control mechanism, and a touch screen is arranged on the outer surface of the control mechanism.

Compared with the prior art, the utility model has the following advantages: the utility model realizes automatic control of grain depot ventilation based on sensing detection technology, wireless remote control technology, man-machine interface technology and intelligent control technology, and has low working intensity and high efficiency. , high degree of automation, high reliability and other advantages, it provides a high-performance ventilation system for grain storage, which has a wide range of application and promotion value.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a block diagram of the utility model;

Fig. 3 is the flowchart of the utility model control process:

Labels in the figure: 1-fixed window frame of ventilation window, 2-moving window of ventilation window, 3-pull rod, 4-driving connecting rod, 5-driving shaft, 6-first bearing support, 7-worm gear mechanism, 8 - drive motor, 9 - position detection device, 10 - installation base plate, 11 - PLC control system, 12 - touch screen, 13 - detection mechanism, 14 - second bearing support.

Detailed ways:

In order to deepen the understanding of the utility model, the utility model will be further described below in conjunction with the embodiments and accompanying drawings. The embodiment is only used to explain the utility model, and does not constitute a limitation to the protection scope of the utility model.

As shown in Fig. 1 a kind of embodiment of the intelligent ventilation system of the utility model grain depot, comprise ventilating louver mechanism, control mechanism and detection mechanism 13, between described louver mechanism and described control mechanism, described control mechanism and The detection mechanisms 13 are all connected by electric wires. The ventilation louver mechanism includes a ventilation window fixed window frame 1, and the bottom inner surface of the ventilation window fixed window frame 1 and the inner surfaces of both sides are hinged with a ventilation window moving window 2, and the ventilation window moves. Form 2 is made up of two sections of vertical parts and one section of horizontal part, and horizontal part is arranged between two sections of vertical parts, and the ends of the two sections of vertical parts of ventilation window movement form 2 are all hinged by pull rod 3 and have vertically arranged Drive connecting rods 4, each driving connecting rod 4 is welded on the same horizontally placed driving shaft 5, one end of the driving shaft 5 is provided with a first bearing support 6, and the other end of the driving shaft 5 is connected with a worm gear mechanism 7 , one end on the driving shaft 5 close to the worm gear mechanism 7 is provided with a second bearing support 14, the vertical direction of the worm gear mechanism 7 is connected with a drive motor 8, and the drive motor 8 is connected with the control mechanism, and the worm gear mechanism 7 One end in the horizontal direction is connected with a position detection device 9, and the bearing support 6, the worm gear mechanism 7 and the position detection device 9 are all arranged on a horizontally placed installation base plate 10, and a PLC control system 11 is arranged in the control mechanism. A touch screen 12 is provided on the surface.

As shown in Figure 2, it is a block diagram of the intelligent control system of the intelligent ventilation system of the grain depot, which is composed of a PLC control module, a temperature and humidity detection module, a touch screen 12, a wireless remote control and receiving device, and a drive motor 8. The temperature and humidity monitoring module in the detection mechanism 13 detects the temperature and humidity in the air, and converts it into a signal and transmits it to the PLC control system 11 of the control mechanism. After the signal processing, the PLC control system 11 transmits the signal to the surface of the control mechanism. On the touch screen 12, the touch screen 12 displays information, and a new signal is generated by touching the touch screen 12 and then transmitted to the PLC control system 11 or the signal sent by the wireless remote control module is transmitted to the receiving module in the control mechanism, and the receiving module transmits the signal to the PLC control System 11, the PLC control system 11 performs signal processing, and finally transmits the signal to the drive motor 8 in the ventilation window mechanism. The 20 ventilation windows of each grain depot are controlled by 2 sets of control systems. The receiving modules of each grain depot control system in the depot area are given different address codes. If a depot needs to remotely control the ventilation operation manually, set the remote control The address coding of the transmission is consistent with the address coding of the receiving module of the library, and the manual ventilation operation of the library can be completed, avoiding interference to the ventilation systems of other warehouses. A remote control can realize the manual control of 1000 ventilation windows of 50 grain depots at most.

As shown in Figure 3, turn on the intelligent ventilation system and enter the RUN state. The temperature and humidity sensors in the storage area will automatically detect signals, and the detection results will be digitally output by RS485. , in the automatic mode, the program automatically judges whether to open the ventilation window for ventilation. If the outdoor conditions do not meet the ventilation conditions, the ventilation windows will not be opened unless the ventilation windows are opened manually; if the outdoor conditions meet the ventilation requirements, automatic and manual ventilation can be selected. During automatic operation, the system automatically opens the ventilation window according to the set program. In Figure 1, the driving motor 8 drives the worm gear mechanism 7 to drive the driving shaft 5, and pulls the driving connecting rod 4 and the pull rod 3 to realize the opening of the ventilation window from the vertical position to the horizontal position. The position is monitored by the proximity switch in the position detection device 9 to the open position of the ventilation window, and when it reaches the horizontal position, it stops to realize ventilation. In the ventilation process of the automatic mode, according to the real-time monitoring data of the temperature and humidity sensors, when the ventilation conditions are not met, all the ventilation windows will be automatically closed immediately; Controls the opening operation of the ventilation window.

The utility model is an intelligent ventilation system for a grain depot capable of realizing automatic control, which is composed of a ventilation window, a detection and control system, and includes the following functions: the ventilation system of the grain depot has manual and automatic operation modes, is convenient and reliable in operation, and has a high degree of automation; manual mode Next, the ventilation system has local and remote operation functions. The local operation is realized through the touch screen, which can individually control the opening and closing of any ventilation window within the range of 0-90°, and can also realize the opening and closing of all ventilation windows with one key; the remote operation is realized by the 12-key remote control, and the remote control distance 100m, not only can control the automatic opening and closing of any ventilation window, but also realize the automatic opening and closing of all ventilation windows; the digital temperature and humidity sensor can automatically detect the temperature and humidity changes outside the warehouse, and the PLC can read in real time through the RS485 communication interface. The sensor data is taken and displayed on the touch screen; in automatic mode, the PLC automatically opens and closes the ventilation window to control the ventilation of the granary according to the temperature and humidity detection results outside the warehouse and the set ventilation conditions; the address code of the remote control can be set digitally, according to the required control Modify the address of the receiving module of the grain depot ventilation system to realize the manual control of the required grain depot ventilation, change the address code of the remote control within 0-99, and realize the independent ventilation control of up to 50 grain depots; the ventilation windows are driven by AC motors , Self-locking at any position when power is off, and the proximity switch detects the open and closed positions.

The utility model can monitor the ventilation conditions in real time, run automatically, and realize ventilation control locally or remotely, which greatly improves the level of grain depot management, reduces the labor intensity of managers, saves human resources, improves the economic benefits of the grain depot, and ensures The security of national grain reserve strategic materials.

Claims (1)

1. An intelligent ventilation system for a grain depot, characterized in that: it comprises a ventilation louver mechanism, a control mechanism and a detection mechanism (13), between the said louver mechanism and the control mechanism, the control mechanism and the detection mechanism (13) are all connected by electric wires, and the ventilation louver mechanism includes a ventilation window fixed window frame (1), and the bottom inner surface and both sides inner surfaces of the ventilation window fixed window frame (1) are hinged with a ventilation window movable window Body (2), the ventilation window movement window (2) is made up of two sections of vertical parts and a section of horizontal section, and the horizontal section is arranged between the two sections of vertical sections, and the ventilation window movement window The ends of the two vertical parts of (2) are hinged with vertically arranged drive links (4) through pull rods (3), and each drive link (4) is welded to the same horizontally placed drive shaft ( 5), one end of the drive shaft (5) is provided with a first bearing support (6), and the other end of the drive shaft (5) is connected with a worm gear mechanism (7). One end on the drive shaft (5) of (7) is provided with the second bearing support (14), and the vertical direction of described worm and gear mechanism (7) is connected with drive motor (8), and described drive motor (8) Connected with the control mechanism, one end of the horizontal direction of the worm gear mechanism (7) is connected with a position detection device (9), and the bearing support (6), the worm gear mechanism (7) and the position detection device (9) ) are all arranged on a horizontally placed installation base plate (10), a PLC control system (11) is provided in the control mechanism, and a touch screen (12) is provided on the outer surface of the control mechanism.

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