Soft starting device of single-cylinder cone crusher

Abstract

The utility model discloses a soft starting device of a single-cylinder cone crusher, which is characterized by comprising a controller, a main circuit breaker, a main motor, a soft starter and a bypass contactor, one end of the main circuit breaker is connected with a three-phase power supply, the other end of the main circuit breaker is connected with a power supply input end of the soft starter, an output end of the soft starter is connected with the main motor, and the bypass contactor is connected with the main motor. A main contact of the bypass contactor is connected with the contactor input end of the soft starter and the main motor, and the output end of the controller is connected with the control end of the soft starter. The soft starter is adopted to drive the main motor, and the rotating speed of the motor can be smoothly increased, so that overlarge starting current and mechanical impact force are prevented from being generated at the driving moment, a transmission system and crushing parts of the single-cylinder cone crusher are protected, the service life of the device is prolonged, and the service life of the device is prolonged. And the main motor soft starting mode can effectively reduce the impact on the power grid during starting and reduce the fluctuation of the voltage of the power grid.

Description

Technical Field

[0001] The utility model relates to the technical field of cone crusher devices, in particular to a soft starting device for a single-cylinder cone crusher. Background Art

[0002] Single-cylinder cone crushers can be used to break bulk materials into fine particles, improving material utilization efficiency and meeting diverse manufacturing needs. They are particularly suitable for materials subject to impact, friction, and abrasion corrosion, and are widely used in food and household crushing, mineral crushing, coal crushing, and building material crushing. The operating principle is that material enters the cylinder through the inlet and is crushed within the cylinder by the swinging of the counter-pendulum. The crushed material is then discharged through the cylinder outlet. It operates smoothly, has a compact structure, and offers high crushing efficiency.

[0003] The traditional motor drive method for single-cylinder cone crushers typically uses direct full-voltage drive. This drive method has the following impacts on the machine: The instantaneous start-up current and mechanical impact generated by the drive can damage the drive system and crushing components. The high current can also impact the power grid, causing voltage fluctuations and even affecting the normal operation of other electrical equipment. Furthermore, this drive method consumes a large amount of energy to accelerate the motor from a standstill to its rated speed, which is not conducive to efficient energy utilization. Utility Model Content

[0004] The purpose of the present utility model is to provide a soft starting device for a single-cylinder cone crusher to solve one or more technical problems existing in the above-mentioned background technology.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A soft starting device for a single-cylinder cone mill comprises a controller, a main circuit breaker QM01, a main motor M01, a soft starter VT1, and a bypass contactor KM1. One end of the main circuit breaker QM01 is connected to a three-phase power supply, the other end of the main circuit breaker QM01 is connected to a power input end of the soft starter VT1, the output end of the soft starter VT1 is connected to the main motor M01, the main contacts of the bypass contactor KM1 are respectively connected to the contactor input end of the soft starter and the main motor M01, and the output end of the controller is connected to the control end of the soft starter VT1.

[0007] Preferably, it also includes intermediate relays KA1, KA3 and circuit breaker F2, the coil end of the intermediate relay KA1 is respectively connected to the output end of the controller and the AC220V power supply, and the main contact of the intermediate relay KA1 is connected to the control end of the soft starter; the coil end of the intermediate relay KA3 is respectively connected to the contact signal end of the soft starter and the AC220V power supply, the main contact of the intermediate relay KA3 is respectively connected to one end of the circuit breaker F2 and the coil of the bypass contactor KM1, and the other end of the circuit breaker F2 and the coil of the bypass contactor are respectively connected to the first phase and the third phase of the three-phase power supply.

[0008] Preferably, it also includes an intermediate relay KA2, a buzzer JB and a circuit breaker F1, one end of the circuit breaker F1 is connected to the AC220V power supply, the other end of the circuit breaker F1 is respectively connected to the main contact of the intermediate relay KA2 and the contact signal end of the soft starter, and the buzzer JB is respectively connected to the main contact of the intermediate relay KA2 and the AC220V power supply.

[0009] Preferably, it further includes a current transformer PL01 and an ammeter PA1, the current transformer PL01 is connected to the first phase of the other end of the main circuit breaker QM01, and the ammeter PA1 is connected in series with the current transformer PL01.

[0010] Preferably, it also includes fuses FU1, FU2, indicator lights 1HL, 2HL and voltmeter PV1, one end of the fuse FU1 is connected to the first phase of the three-phase power supply, and the indicator light 1HL is respectively connected to the other end of the fuse FU1 and the third phase of the three-phase power supply; one end of the fuse FU2 is connected to the first phase of the other end of the main circuit breaker QM01, the indicator light 2HL is respectively connected to the other end of the fuse FU2 and the third phase of the other end of the main circuit breaker QM01, and the voltmeter PV1 is connected in parallel with the indicator light 2HL.

[0011] Preferably, it further includes a power supply module, which includes a three-phase power supply, an AC220V power supply and a DC24V power supply.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: by adopting a soft starter to drive the main motor, the speed of the motor can be smoothly increased, thereby avoiding excessive starting current and mechanical impact force at the driving moment, which is beneficial to protecting the transmission system and crushing components of the single-cylinder cone crusher and extending the service life of the device. Moreover, the soft starting method of the main motor can effectively reduce the impact on the power grid during startup and reduce the fluctuation of the power grid voltage, thereby ensuring the stable operation of the power grid and avoiding adverse effects on other electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings further illustrate the present invention, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0014] Figure 1 It is a simplified diagram of the system structure of one embodiment of the present invention.

[0015] Figure 2 This is a circuit diagram of a soft starter and a main motor in one embodiment of the present utility model;

[0016] Figure 3 This is a circuit diagram of an intermediate relay and a bypass contactor in one embodiment of the present utility model;

[0017] Figure 4 This is a circuit diagram of the output end of the controller of one embodiment of the present invention;

[0018] Figure 5 This is a circuit diagram of a power module according to one embodiment of the present invention. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0020] The soft starting device of a single-cylinder cone crusher in this embodiment is shown in the attached Figure 1 and 2 , including a controller, a main circuit breaker QM01, a main motor M01, a soft starter VT1, a bypass contactor KM1, one end of the main circuit breaker QM01 is connected to the three-phase power supply, the other end of the main circuit breaker QM01 is connected to the power input terminals R, S, and T of the soft starter VT1, the output terminals U, V, and W of the soft starter VT1 are connected to the main motor M01, the main contacts of the bypass contactor KM1 are respectively connected to the contactor input terminals U1, V1, and W1 of the soft starter and the main motor M01, and the output end of the controller is connected to the control end of the soft starter VT1.

[0021] By using a soft starter to drive the main motor, the motor's speed can be smoothly increased, thus avoiding excessive starting current and mechanical impact at the moment of drive. This helps protect the single-cylinder cone crusher's transmission system and crushing components, extending the device's service life. Furthermore, the main motor's soft start effectively reduces the impact on the power grid during startup and reduces grid voltage fluctuations, thereby ensuring stable operation and avoiding adverse effects on other electrical equipment. Compared with traditional direct full-voltage drive methods, the soft starter can gradually increase the load on the main motor M01, enabling more efficient use of electrical energy as the main motor reaches rated speed from a standstill, achieving efficient energy utilization. By establishing a connection between the controller and the soft starter and utilizing the controller's output to control the soft starter, the device's automation level is improved.

[0022] Preferably, refer to the attached Figure 3 and 4 The system also includes intermediate relays KA1 and KA3, and a circuit breaker F2. The coil of intermediate relay KA1 is connected to the controller's output and the AC220V power supply, respectively. The main contacts of intermediate relay KA1 are connected to the soft starter's control terminals (SOP, RUN, COM, and X3). The coil of intermediate relay KA3 is connected to the soft starter's contact signal terminals and the AC220V power supply, respectively. The main contacts of intermediate relay KA3 are connected to one end of circuit breaker F2 and the coil of bypass contactor KM1. The other end of circuit breaker F2 and the coil of the bypass contactor are connected to the first and third phases of the three-phase power supply, respectively. By configuring intermediate relays KA1 and KA3, the controller controls the on / off switching of intermediate relay KA1's main contacts, thereby indirectly controlling the soft starter's operation, increasing control flexibility and accuracy. Furthermore, by connecting intermediate relay KA3 to the soft starter's contact signal terminals, the coil of bypass contactor KM1 can be automatically controlled based on the soft starter's status, achieving automated starting and switching. Circuit breaker F2 is set to provide overload and short circuit protection to ensure stable operation of the device.

[0023] Preferably, the device further includes an intermediate relay KA2, a buzzer JB, and a circuit breaker F1. One end of the circuit breaker F1 is connected to the AC220V power supply, and the other end of the circuit breaker F1 is connected to the main contacts of the intermediate relay KA2 and the contact signal terminal of the soft starter, respectively. The buzzer JB is connected to the main contacts of the intermediate relay KA2 and the AC220V power supply, respectively. By configuring the intermediate relay KA2, when a fault occurs in the device (such as a current overload or a sensor signal), the controller outputs a fault alarm signal, causing the operating contacts of the intermediate relay KA2 to close and activating the buzzer JB to sound an alarm, thereby notifying the operator.

[0024] Preferably, the system also includes a current transformer PL01 and an ammeter PA1. The current transformer PL01 is connected to the first phase at the other end of the main circuit breaker QM01, and the ammeter PA1 is connected in series with the current transformer PL01. The current transformer PL01 and ammeter PA1 facilitate the operator's ability to obtain the current value at the soft starter's power input, preventing damage to the device caused by abnormal conditions such as overcurrent and short circuit.

[0025] Preferably, the device further includes fuses FU1, FU2, indicator lights 1HL, 2HL, and a voltmeter PV1. One end of the fuse FU1 is connected to the first phase of the three-phase power supply, and the indicator light 1HL is respectively connected to the other end of the fuse FU1 and the third phase of the three-phase power supply; one end of the fuse FU2 is connected to the first phase of the other end of the main circuit breaker QM01, and the indicator light 2HL is respectively connected to the other end of the fuse FU2 and the third phase of the other end of the main circuit breaker QM01, and the voltmeter PV1 is connected in parallel to the indicator light 2HL. Therefore, this embodiment not only detects the input current by providing the ammeter PA1 and the current transformer PL1, but also monitors the three-phase power supply voltage by providing the voltmeter PV1, and is provided with fuses FU1 and FU2 to provide overcurrent protection, making the entire device safer and more reliable, and convenient for operators to obtain circuit status in real time.

[0026] Preferably, refer to the attached Figure 5 The power module includes three-phase power, AC220V power, and DC24V power. Therefore, the power module provides three-phase power to the soft starter and main motor, AC220V power to the bypass contactor KM01 and intermediate relays KA1, KA2, and KA3, and DC24V power to the controller.

[0027] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. A soft starting device for a single-cylinder cone crusher, characterized in that: It includes a controller, a main circuit breaker QM01, a main motor M01, a soft starter VT1, and a bypass contactor KM1. One end of the main circuit breaker QM01 is connected to a three-phase power supply, the other end of the main circuit breaker QM01 is connected to the power input end of the soft starter VT1, the output end of the soft starter VT1 is connected to the main motor M01, the main contacts of the bypass contactor KM1 are respectively connected to the contactor input end of the soft starter and the main motor M01, and the output end of the controller is connected to the control end of the soft starter VT1.

2. The soft starting device of a single-cylinder cone crusher according to claim 1, characterized in that: It also includes intermediate relays KA1, KA3 and circuit breaker F2. The coil end of the intermediate relay KA1 is respectively connected to the output end of the controller and the AC220V power supply, and the main contact of the intermediate relay KA1 is connected to the control end of the soft starter; the coil end of the intermediate relay KA3 is respectively connected to the contact signal end of the soft starter and the AC220V power supply, and the main contact of the intermediate relay KA3 is respectively connected to one end of the circuit breaker F2 and the coil of the bypass contactor KM1, and the other end of the circuit breaker F2 and the coil of the bypass contactor are respectively connected to the first phase and the third phase of the three-phase power supply.

3. The soft starting device of a single-cylinder cone crusher according to claim 1, characterized in that: It also includes an intermediate relay KA2, a buzzer JB and a circuit breaker F1. One end of the circuit breaker F1 is connected to the AC220V power supply, and the other end of the circuit breaker F1 is respectively connected to the main contact of the intermediate relay KA2 and the contact signal end of the soft starter. The buzzer JB is respectively connected to the main contact of the intermediate relay KA2 and the AC220V power supply.

4. The soft starting device of a single-cylinder cone crusher according to claim 1, characterized in that: It also includes a current transformer PL01 and an ammeter PA1. The current transformer PL01 is connected to the first phase of the other end of the main circuit breaker QM01. The ammeter PA1 is connected in series with the current transformer PL01.

5. The soft starting device of a single-cylinder cone crusher according to claim 1, characterized in that: It also includes fuses FU1, FU2, indicator lights 1HL, 2HL and voltmeter PV1. One end of the fuse FU1 is connected to the first phase of the three-phase power supply, and the indicator light 1HL is respectively connected to the other end of the fuse FU1 and the third phase of the three-phase power supply; one end of the fuse FU2 is connected to the first phase of the other end of the main circuit breaker QM01, and the indicator light 2HL is respectively connected to the other end of the fuse FU2 and the third phase of the other end of the main circuit breaker QM01, and the voltmeter PV1 is connected in parallel with the indicator light 2HL.

6. The soft starting device of a single-cylinder cone crusher according to claim 1, characterized in that: It also includes a power supply module, which includes a three-phase power supply, an AC220V power supply and a DC24V power supply.

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