CN102416670B - Mixing station and control equipment and control method thereof - Google Patents

Abstract

The invention discloses a mixing station and a control device and a control method thereof, wherein the mixing station comprises a mixing motor and a mixing motor frequency converter which are connected, and the device comprises: the receiving device is used for receiving the stirring signal and the stirring time; and the controller is connected with the stirring motor frequency converter and the receiving device and is used for controlling the stirring motor frequency converter to be in a high-frequency running state during the stirring time after the receiving device receives the stirring signal and controlling the stirring motor frequency converter to be in a low-frequency running state after the stirring time is over. By the invention, energy consumption can be saved, and the service life of the motor can be prolonged.

Description

Mixing plant and its control equipment, control method

technical field

The present invention relates to the field of engineering machinery, in particular to a mixing station and its control equipment and control method.

Background technique

In the production process of dry powder mortar, after receiving the production plan, first calculate the dry powder ratio to calculate the amount of various mixed materials; then carry out weighing to calculate the weight of each material; after the weighing is completed, then Start to feed materials into the mixing host; after the feeding is completed, start the motor of the mixing host to stir; after the mixing is completed, open the discharge door of the mixing host, and the finished dry powder in the mixing host will enter the hopper; after that, the bucket elevator can The finished dry powder in the hopper is transported to the finished product warehouse for storage.

In the above production process, the motor of the mixing machine is always running at a constant speed. Although this method improves the production efficiency, it is a waste of power resources, and the motor is running at high speed for a long time, which will also affect the life of the motor.

Contents of the invention

The object of the present invention is to provide a mixing station and its control equipment and control method, which can save energy consumption and prolong the life of the motor.

In order to achieve the above object, the present invention provides a control device for a mixing station, the mixing station includes a connected mixing motor and a mixing motor frequency converter, the equipment includes: a receiving device for receiving a stirring signal and a stirring time; a controller , connected with the frequency converter of the stirring motor and the receiving device, used to control the frequency converter of the stirring motor to be in a high-frequency operation state during the stirring time after the receiving device receives the stirring signal, and After the stirring time ends, the frequency converter of the stirring motor is controlled to be in a low-frequency operation state.

A control method for a mixing station, the mixing station includes a connected stirring motor and a frequency converter for the stirring motor, the method includes: receiving a stirring signal and a stirring time; after receiving the stirring signal, controlling the frequency conversion of the stirring motor The device is in a high-frequency operating state during the stirring time, and the stirring motor frequency converter is controlled to be in a low-frequency operating state after the stirring time is over.

A stirring station, which includes a connected stirring motor and a frequency converter for the stirring motor, and is characterized in that the stirring station also includes the above-mentioned control device.

Through the above technical scheme, the frequency converter of the stirring motor can be operated at high frequency when the main machine is stirring, so that the frequency converter of the stirring motor can be operated at high frequency; when the main machine is not stirring, the frequency converter of the stirring motor can be operated at Low-frequency running state, and then make the stirring motor run at low-frequency idle speed. Therefore, the power consumption can be saved, and the life of the motor can be prevented from being affected by the long-time running of the motor.

Other features and advantages of the present invention will be described in detail in the following detailed description.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, together with the following specific embodiments, are used to explain the present invention, but do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is the structural representation of the control equipment that is used for mixing station provided by the present invention;

Fig. 2 is a schematic structural view showing a mixing station;

Fig. 3 A is the running state schematic diagram of stirring motor; And

Fig. 3B is a schematic diagram of the running state of the motor of the bucket elevator.

Explanation of reference signs

1 Stirring host 2 hopper

3 bucket elevator 4 finished product warehouse

10 receiving device 20 controller

Detailed ways

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

Fig. 1 is a schematic structural diagram of a control device for a mixing station provided by the present invention. The invention provides a control device for a mixing station, the mixing station includes a connected stirring motor and a frequency converter for the stirring motor (the mixing host includes the connected stirring motor and a frequency converter for the stirring motor), the equipment includes: a receiving device 10 , for receiving the stirring signal and the stirring time (the stirring time can be manually set according to the dry powder ratio); the controller 20 is connected with the frequency converter of the stirring motor and the receiving device 10, and is used to receive the stirring time at the receiving device 10 After the stirring signal, control the stirring motor frequency converter to be in a high-frequency operation state during the stirring time (for example, after the receiving device 10 receives the stirring signal, send a high frequency to the stirring motor frequency converter. frequency signal), and after the end of the stirring time, control the frequency converter of the stirring motor to be in a low-frequency operation state (for example, by sending a low frequency signal to the frequency converter of the stirring motor after the end of the stirring time). In this way, the frequency converter of the stirring motor can be operated at high frequency when the main machine is stirring, so that the stirring motor can run at high frequency with load; when the main machine is not stirring, the frequency converter of the stirring motor can be operated at low frequency state, and then make the stirring motor idle at low frequency. Therefore, the power consumption can be saved, and the life of the motor can be prevented from being affected by the long-time running of the motor.

Wherein, the controller 20 can be various devices capable of realizing the above-mentioned control functions, such as a programmable logic controller (PLC), a single-chip microcomputer, and a microcontroller.

Fig. 2 is a schematic diagram showing the structure of the mixing station. As shown in FIG. 2 , the mixing station also includes a hopper 2 , a bucket elevator 3 and a finished product bin 4 . After the stirring main engine 1 finishes stirring, the discharge opening of the mixing main engine 1 can be opened, so that the finished dry powder in the mixing main engine 1 enters the hopper 2 through the discharge opening, and then the bucket elevator 3 can move the hopper 2 The finished dry powder inside is transported to the finished product bin 4 for storage. The bucket elevator 3 includes a connected bucket elevator motor and a bucket elevator motor frequency converter.

Preferably, the receiving device 10 is also used to receive the unloading signal and the unloading time (the unloading time can also be set manually), and the controller 20 is also connected with the bucket elevator motor frequency converter, and is used to After the receiving device 10 receives the discharge signal, control the bucket elevator motor frequency converter to be in a high-frequency operation state during the discharge time (for example, by receiving the discharge signal at the receiving device 10 After the unloading signal, send a high-frequency signal to the bucket elevator motor frequency converter), and control the bucket elevator motor frequency converter to be in a low-frequency operation state after the end of the unloading time (for example, by ending the unloading time After that, send a low-frequency signal to the bucket elevator motor inverter). In this way, during the unloading period, the inverter of the bucket elevator motor can be operated at high frequency, and then the motor of the bucket elevator can be operated at high frequency with load; after unloading, the inverter of the bucket elevator motor can be operated at The low-frequency operation state makes the bucket elevator motor run at low-frequency idle speed. Therefore, the power consumption can be saved, and the bucket elevator motor can also be prevented from running for a long time and affecting its service life.

In order to ensure that the finished dry powder can be transported to the finished product bin to the greatest extent, preferably, the bucket elevator is also set with a discharge delay, that is, after the discharge is completed, the bucket elevator continues to run for a period of time. Correspondingly, as far as the control device is concerned, the receiving device 10 is also used to receive the unloading delay, and the controller 20 is also used to control the The frequency converter of the bucket elevator motor is in a high-frequency operation state during the discharge time and the discharge delay period, and the bucket elevator motor frequency converter is controlled to be in a low-frequency operation state after the discharge delay ends.

Fig. 3A is a schematic diagram of the running state of the stirring motor, and Fig. 3B is a schematic diagram of the running state of the bucket elevator motor. As shown in Figures 3A and 3B, the agitating motor operates in a high-frequency load operation state and a low-frequency idling operation state respectively during stirring and non-stirring periods, and the bucket elevator motor also operates respectively during unloading and non-discharging. It operates in the high-frequency load operation state and the low-frequency idling operation state.

Correspondingly, the present invention also provides a control method for a stirring station, the stirring station includes a connected stirring motor and a stirring motor frequency converter, the method includes: receiving a stirring signal and a stirring time; receiving the stirring signal Afterwards, the frequency converter of the stirring motor is controlled to be in a high-frequency operation state during the stirring time, and the frequency converter of the stirring motor is controlled to be in a low-frequency operation state after the stirring time is over.

Wherein, the mixing station also includes a connected bucket elevator motor and a bucket elevator motor frequency converter, the method also includes: receiving a discharge signal and a discharge time; and after receiving the discharge signal, controlling the The frequency converter of the bucket elevator motor is in a high-frequency operation state during the unloading time, and the bucket elevator motor frequency converter is controlled to be in a low-frequency operation state after the end of the unloading time.

Wherein, the method further includes: receiving the unloading delay; and after receiving the unloading signal, controlling the frequency converter of the bucket elevator motor to be in a high-frequency operation state during the unloading time and the unloading delay , and control the frequency converter of the bucket elevator motor to operate at a low frequency after the delay ends.

Correspondingly, the present invention also provides a mixing station, which includes a connected stirring motor and a frequency converter for the stirring motor, and the mixing station also includes: the above-mentioned control device for the mixing station.

Wherein, the mixing station also includes a connected bucket elevator motor and a bucket elevator motor frequency converter.

Through the present invention, the motor in the mixing station can be in the high-frequency load operation state when it is required to work, and in the low-frequency idle speed operation state when it is not required to work, thereby saving energy consumption, ensuring production efficiency, and prolonging the service life of the motor.

The preferred embodiment of the present invention has been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the specific details of the above embodiment, within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, These simple modifications all belong to the protection scope of the present invention.

In addition, it should be noted that the various specific technical features described in the above specific implementation manners may be combined in any suitable manner if there is no contradiction. In order to avoid unnecessary repetition, various possible combinations are not further described in the present invention.

In addition, various combinations of different embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (3)

1. A control device for a mixing plant, which mixing plant comprises a mixing motor and a mixing motor frequency converter connected to each other, characterized in that the device comprises:

the receiving device is used for receiving the stirring signal and the stirring time; and

the controller is connected with the stirring motor frequency converter and the receiving device and is used for controlling the stirring motor frequency converter to be in a high-frequency running state during the stirring time after the receiving device receives the stirring signal and controlling the stirring motor frequency converter to be in a low-frequency running state after the stirring time is finished,

wherein,

the mixing station also comprises a bucket elevator motor and a bucket elevator motor frequency converter which are connected,

the receiving device is also used for receiving the unloading signal, the unloading time and the unloading delay,

the controller is further configured to control the bucket elevator motor frequency converter to be in a high-frequency operation state during the unloading time and the unloading delay period after the receiving device receives the unloading signal, and to control the bucket elevator motor frequency converter to be in a low-frequency operation state after the unloading delay is finished.

2. A control method for a mixing station comprising a mixing motor and a mixing motor frequency converter connected to each other, characterized in that the method comprises:

receiving a stirring signal and stirring time;

after receiving the stirring signal, controlling the stirring motor frequency converter to be in a high-frequency operation state during the stirring time, and controlling the stirring motor frequency converter to be in a low-frequency operation state after the stirring time is over,

the mixing station further comprises a bucket elevator motor and a bucket elevator motor frequency converter which are connected, and the method further comprises the following steps:

receiving a discharging signal, discharging time and discharging delay; and

and after the discharging signal is received, controlling the frequency converter of the bucket elevator motor to be in a high-frequency running state during the discharging time and the discharging delay period, and controlling the frequency converter of the bucket elevator motor to be in a low-frequency running state after the discharging delay is finished.

3. The utility model provides a stirring station, this stirring station includes that continuous agitator motor and agitator motor converter and continuous fill are carried quick-witted motor and fill and are carried quick-witted motor converter, its characterized in that, this stirring station still includes: the control device of claim 1.

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