Time-sharing control device for electromagnetic vibrator on bin wall of urea granulator

Abstract

The utility model relates to the technical field of urea production, in particular to a time-sharing control device for an electromagnetic vibrator on a bin wall of a urea granulator. The novel time-sharing control device for the electromagnetic vibrators on the bin wall of the urea pelletizer is provided to solve the problems that according to an existing method for manually controlling three electromagnetic vibrators, the workload of operators is large, and the vibration effect is not stable. Comprising a PLC (Programmable Logic Controller), an amplitude regulator, a first electromagnetic vibrator, a second electromagnetic vibrator and a third electromagnetic vibrator, and automatic start and stop and circulation control of the three electromagnetic vibrators are realized through the PLC. The device provided by the utility model reduces the workload of operators, and effectively improves the control precision at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of urea production, in particular to the technical field of bin wall vibration of urea granulators, and specifically to a time-sharing control device for electromagnetic vibrators on the bin wall of urea granulators. Background Technique

[0002] Three electromagnetic vibrators are installed on the top of the urea granulator to vibrate the dust on the top of the bin wall of the granulator to ensure that the top of the bin wall is clean. To avoid too much dust falling when the three electromagnetic vibrators vibrate simultaneously and affecting the normal and stable operation of the equipment, the three electromagnetic vibrators need to be controlled in sequence and time-sharing. The existing three electromagnetic vibrators are manually controlled in sequence and time-sharing. The partial wiring schematic diagrams of the existing amplitude regulators and electromagnetic vibrators are as Figure 1 shown. The specific operation steps are as follows: Manually close the power switch QF1 of the first electromagnetic vibrator 1. The first electromagnetic vibrator 1 is powered on and runs for about 3 minutes. Then manually open the power switch QF1 of the first electromagnetic vibrator 1, and the first electromagnetic vibrator 1 loses power and stops operating; Manually close the power switch QF2 of the second electromagnetic vibrator 2. The second electromagnetic vibrator 2 is powered on and runs for about 3 minutes. Then manually open the power switch QF2 of the second electromagnetic vibrator 2, and the second electromagnetic vibrator 2 loses power and stops operating; Manually close the power switch QF3 of the third electromagnetic vibrator 3. The third electromagnetic vibrator 3 is powered on and runs for about 3 minutes. Then manually open the power switch QF3 of the third electromagnetic vibrator 3, and the third electromagnetic vibrator 3 loses power and stops operating. After a delay of one hour, enter the next vibration cycle. However, for manual control, on the one hand, the workload of the operator is relatively large, and on the other hand, due to the certain randomness in the time intervals for the opening and stopping of the three electromagnetic vibrators and the difficulty for manual control to be precise, the vibration effect is unstable. Summary of the Invention

[0003] In order to solve the problems that the existing method of manually controlling three electromagnetic vibrators has a relatively large workload for the operator and an unstable vibration effect, the utility model provides a new time-sharing control device for electromagnetic vibrators on the bin wall of urea granulators.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] The time-sharing control device for electromagnetic vibrators on the bin wall of urea granulators includes a PLC controller, an amplitude regulator, a first electromagnetic vibrator, a second electromagnetic vibrator, and a third electromagnetic vibrator;

[0006] The neutral terminal and live wire terminal on the PLC controller are respectively connected to the neutral terminal and live wire terminal of the AC 220V power supply through the first air switch QF1. The first input terminal and the second input terminal on the PLC controller are respectively connected to the +24V terminal after passing through the start button and the stop button. The first output terminal, the second output terminal, and the third output terminal on the PLC controller are respectively connected to the neutral terminal on the PLC controller after passing through the first intermediate relay coil, the second intermediate relay coil, and the third intermediate relay coil. The output COM terminal on the PLC controller is connected to its live wire terminal. The two grounding terminals on the PLC controller are both grounded, and the two 24V COM terminals on the PLC controller are short-circuited;

[0007] The two input terminals of the amplitude regulator are respectively connected to the neutral terminal and live wire terminal of the AC 220V power supply through the second air switch QF2. The two input terminals of the first electromagnetic vibrator are respectively connected to the two output terminals of the amplitude regulator after passing through the two normally open contacts of the first intermediate relay. The two input terminals of the second electromagnetic vibrator are respectively connected to the two output terminals of the amplitude regulator after passing through the two normally open contacts of the second intermediate relay. The two input terminals of the third electromagnetic vibrator are respectively connected to the two output terminals of the amplitude regulator after passing through the two normally open contacts of the third intermediate relay.

[0008] Working process: After pressing the start button, the urea granulator bin wall electromagnetic vibrator time-sharing control device enters the operating state. The first output terminal of the PLC controller outputs a signal, the first intermediate relay is energized and attracted, and its corresponding two normally open contacts are closed. The first electromagnetic vibrator is energized and operates for 3 minutes. The first output terminal of the PLC controller stops outputting the signal, the first intermediate relay KA1 loses power and releases, and its corresponding two normally open contacts are disconnected. The first electromagnetic vibrator loses power and stops operating;

[0009] After a 20-second delay, the second output terminal of the PLC controller outputs a signal, the second intermediate relay is energized and attracted, and its corresponding normally open contact is closed. The second electromagnetic vibrator is energized and operates for 3 minutes. The second output terminal of the PLC controller stops outputting the signal, the second intermediate relay KA2 loses power and releases, and its corresponding two normally open contacts are disconnected. The second electromagnetic vibrator loses power and stops operating;

[0010] After a 20-second delay, the third output terminal of the PLC controller outputs a signal, the third relay KA3 is energized and attracted, and its corresponding normally open contact is closed. The third electromagnetic vibrator is energized and operates for 3 minutes. The third output terminal of the PLC controller stops outputting the signal, the third relay loses power and releases, and its corresponding two normally open contacts are disconnected. The third electromagnetic vibrator loses power and stops operating;

[0011] After a 50 - minute delay, the first output port of the PLC controller outputs a signal again, entering the next vibration cycle until the stop button is pressed, and the time - sharing control device of the electromagnetic vibrator on the bin wall of the urea granulator stops running.

[0012] Furthermore, a first fuse and a second fuse are respectively connected in series between the two normally - open contacts of the first intermediate relay and the two input terminals of the first electromagnetic vibrator; a third fuse and a fourth fuse are respectively connected in series between the two normally - open contacts of the second intermediate relay and the two input terminals of the second electromagnetic vibrator; a fifth fuse and a sixth fuse are respectively connected in series between the two normally - open contacts of the third intermediate relay and the two input terminals of the third electromagnetic vibrator, so as to improve the stability and safety of the device.

[0013] The beneficial effects produced by the present utility model are as follows: The time - sharing control device of the electromagnetic vibrator on the bin wall of the urea granulator according to the present utility model realizes the automatic start - stop and cyclic control of three electromagnetic vibrators, reduces the workload of operators, effectively improves the control accuracy, and ensures the vibration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing the embodiments in line with the present utility model, and are used together with the specification to explain the principles of the present utility model.

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a partial wiring schematic diagram of the existing amplitude adjuster and the electromagnetic vibrator;

[0017] Figure 2 It is the main - circuit wiring schematic diagram of the time - sharing control device of the electromagnetic vibrator according to the present invention;

[0018] Figure 3 It is the control - circuit wiring schematic diagram of the time - sharing control device of the electromagnetic vibrator according to the present invention.

[0019] In the figure: 1 - the first electromagnetic vibrator, 2 - the second electromagnetic vibrator, 3 - the third electromagnetic vibrator, 4 - the PLC controller, 5 - the amplitude adjuster. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the solution of the present utility model will be further described below. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0021] In the description, it should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. It should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0022] In the following description, many specific details are set forth in order to fully understand the present utility model, but the present utility model can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] The specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0024] As Figure 2 、 3 shown, the time-sharing control device for the electromagnetic vibrator on the bin wall of the urea granulator includes a PLC controller 4, an amplitude adjuster 5, a first electromagnetic vibrator 1, a second electromagnetic vibrator 2, and a third electromagnetic vibrator 3;

[0025] The zero wire terminal and the live wire terminal on the PLC controller 4 are respectively connected to the zero wire terminal and the live wire terminal of the AC 220V power supply through a first air switch QF1. The first input terminal 00 and the second input terminal 01 on the PLC controller 4 are respectively connected to the +24V terminal after passing through a start button SB1 and a stop button SB2. The first output terminal 1000, the second output terminal 1001, and the third output terminal 1002 on the PLC controller 4 are respectively connected to the zero wire terminal on the PLC controller 4 after passing through the coils of a first intermediate relay KA1, a second intermediate relay KA2, and a third intermediate relay KA3. The output COM terminal on the PLC controller 4 is connected to its live wire terminal. The two grounding terminals GND on the PLC controller 4 are both grounded, and the two 24V COM terminals on the PLC controller 4 are short-circuited;

[0026] The two input terminals of the amplitude adjuster 5 are respectively connected to the neutral wire terminal and the live wire terminal of the AC 220V power supply through the second air switch QF2. The two input terminals of the first electromagnetic vibrator 1 are respectively connected to the two output terminals of the amplitude adjuster 5 after passing through the two normally open contacts of the first intermediate relay KA1. The two input terminals of the second electromagnetic vibrator 2 are respectively connected to the two output terminals of the amplitude adjuster 5 after passing through the two normally open contacts of the second intermediate relay KA2. The two input terminals of the third electromagnetic vibrator 3 are respectively connected to the two output terminals of the amplitude adjuster 5 after passing through the two normally open contacts of the third intermediate relay KA3.

[0027] Working process: After pressing the start button SB1, the time-sharing control device of the electromagnetic vibrator on the urea granulator bin wall enters the operating state. The first output terminal 1000 of the PLC controller 4 outputs a signal, and the coil of the first intermediate relay KA1 is energized and attracted, and its corresponding two normally open contacts are closed. The first electromagnetic vibrator 1 is energized and operates for 3 minutes. The first output terminal 1000 of the PLC controller stops outputting the signal, the coil of the first intermediate relay KA1 loses power and releases, and its corresponding two normally open contacts are disconnected. The first electromagnetic vibrator 1 loses power and stops operating;

[0028] After a 20-second delay, the second output terminal 1001 of the PLC controller 4 outputs a signal, the coil of the second intermediate relay KA2 is energized and attracted, and its corresponding normally open contact is closed. The second electromagnetic vibrator 2 is energized and operates for 3 minutes. The second output terminal 1001 of the PLC controller 4 stops outputting the signal, the coil of the second intermediate relay KA2 loses power and releases, and its corresponding two normally open contacts are disconnected. The second electromagnetic vibrator 2 loses power and stops operating;

[0029] After a 20-second delay, the third output terminal 1002 of the PLC controller 4 outputs a signal, the coil of the third relay KA3 is energized and attracted, and its corresponding normally open contact is closed. The third electromagnetic vibrator 3 is energized and operates for 3 minutes. The third output terminal 1002 of the PLC controller 4 stops outputting the signal, the coil of the third relay KA3 loses power and releases, and its corresponding two normally open contacts are disconnected. The third electromagnetic vibrator 3 loses power and stops operating;

[0030] After a 50-minute delay, the first output port 1000 of the PLC controller outputs a signal again, entering the next vibration cycle until the stop button SB2 is pressed, and the time-sharing control device of the electromagnetic vibrator on the urea granulator bin wall stops operating.

[0031] During specific implementation, a first fuse FU1 and a second fuse FU2 are respectively connected in series between two normally open contacts of a first intermediate relay KA1 and two input ends of a first electromagnetic vibrator 1. A third fuse FU3 and a fourth fuse FU3 are respectively connected in series between two normally open contacts of a second intermediate relay KA2 and two input ends of a second electromagnetic vibrator 2. A fifth fuse FU5 and a sixth fuse FU6 are respectively connected in series between two normally open contacts of a third intermediate relay KA3 and two input ends of a third electromagnetic vibrator 3, so as to improve the stability and safety of the device.

[0032] The above are only specific implementation manners of the present invention, enabling those skilled in the art to understand or implement the present invention. Although the foregoing embodiments have been described in detail, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. Urea granulator bin wall electromagnetic vibrator time-sharing control device, characterized in that: It comprises a PLC controller (4), an amplitude regulator (5), a first electromagnetic vibrator (1), a second electromagnetic vibrator (2), and a third electromagnetic vibrator (3); The neutral terminal and the live terminal of the PLC controller (4) are connected to the neutral terminal and the live terminal of the AC 220V power supply through the first air switch, respectively; the first input terminal and the second input terminal of the PLC controller (4) are connected to the +24V terminal through the start button and the stop button, respectively; the first output terminal, the second output terminal and the third output terminal of the PLC controller (4) are connected to the neutral terminal of the PLC controller (4) through the first intermediate relay coil, the second intermediate relay coil and the third intermediate relay KA3 coil, respectively; the output COM terminal of the PLC controller (4) is connected to the live terminal thereof; the two ground terminals of the PLC controller (4) are both grounded; and the two 24V COM terminals of the PLC controller (4) are short-circuited; The two input ends of the amplitude regulator (5) are respectively connected to the neutral terminal and the live terminal of the AC 220V power supply through the second air switch; the two input ends of the first electromagnetic vibrator (1) are respectively connected to the two output ends of the amplitude regulator (5) through the two normally open contacts of the first intermediate relay; the two input ends of the second electromagnetic vibrator (2) are respectively connected to the two output ends of the amplitude regulator (5) through the two normally open contacts of the second intermediate relay; and the two input ends of the third electromagnetic vibrator (3) are respectively connected to the two output ends of the amplitude regulator (5) through the two normally open contacts of the third intermediate relay.

2. The time-sharing control device for the electromagnetic vibrator of the urea granulator bin wall according to claim 1 is characterized in that: A first fuse and a second fuse are respectively connected in series between the two normally open contacts of the first intermediate relay and the two input ends of the first electromagnetic vibrator (1); a third fuse and a fourth fuse are respectively connected in series between the two normally open contacts of the second intermediate relay and the two input ends of the second electromagnetic vibrator (2); and a fifth fuse and a sixth fuse are respectively connected in series between the two normally open contacts of the third intermediate relay and the two input ends of the third electromagnetic vibrator (3).

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