Automatic interlocking control system of dust fall fan

Abstract

The invention belongs to the technical field of casting equipment, and mainly relates to a dust fall fan automatic interlocking control system which comprises a detection module, a control module and a dust fall fan start-stop module. The control module is in signal connection with the detection module and the dust fall fan start-stop module; the detection module is used for detecting dust concentration parameters of a to-be-detected space; the control module is used for receiving the detection data from the detection module and controlling the dust fall extension start-stop module according to the detection data; and the dust falling extension start-stop module receives the control signal of the control module, and is powered on or powered off according to the instruction of the control signal. Wherein an automatic interlocking control function is mainly added, all links are carried out step by step according to logic, equipment is started or stopped according to actual production conditions on site, and the purpose of green production is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of casting equipment, and mainly relates to an automatic interlocking control system for a dust reduction fan. Background Art

[0002] The main function of the subsequent cleaning process in the production process of steel castings is to repair surface defects, including welding, grinding and gouging. These processes will generate dust in the process of processing steel castings. If the dust cannot be removed in time and effectively, it will have an adverse effect on the health of on-site workers. In order to improve the working environment of the casting cleaning workshop, new dust removal equipment and matching dust hoods are added to collect dust to effectively collect local dust; however, due to the large workload and large site occupation of the grinding process, it is impossible to build a dust hood that meets the size, resulting in the dust generated during the grinding process cannot be handled in time, seriously affecting the health of the operator; at the same time, the dust floats to the surrounding equipment and distribution cabinets, resulting in dust accumulation, which accumulates for a long time and affects the normal operation of the equipment, causing equipment failures and other problems. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides an automatic interlocking control system for dust suppression fans, which mainly solves the problem that large areas of dust cannot be effectively handled during the cleaning process of the foundry workshop. It includes a detection module, a control module and a dust suppression fan start-stop module. The specific technical solution is as follows:

[0004] A dust reduction fan automatic interlock control system, comprising a detection module, a control module and a dust reduction fan start-stop module; the control module is respectively connected to the detection module and the dust reduction fan start-stop module by signals; the detection module is used to detect the dust concentration parameters of the space to be tested; the control module is used to receive the detection data from the detection module, and control the dust reduction extension start-stop module according to the detection data; the dust reduction extension start-stop module receives the control signal of the control module, and is powered on or off according to the instruction of the control signal. Preferably, the detection module is set to multiple. The dust reduction fan start-stop module is set to multiple.

[0005] In one embodiment, the detection module includes a circuit breaker QF3, a transformer U2, a probe, a second signal converter and a third transmitter; the circuit breaker QF3 is connected to the transformer U2, the transformer U2 is respectively connected to the second signal converter and the probe, the probe is connected to the second signal converter, and the second signal converter is connected to the third transmitter; wherein the probe is used to detect the dust concentration parameters of the space to be tested; the circuit breaker QF3 is used to control the opening or disconnection of part of the circuit of the detection module; the transformer U2 is used to reduce the 220V voltage to 24V.

[0006] In one embodiment, the dust reduction fan start and stop module includes a circuit breaker QF2, a contactor KM1, a motor M, an intermediate relay KA1 and a second receiver; the circuit breaker QF2 is connected to the contactor KM1, the contactor KM1 is connected to the motor M, and the intermediate relay KA1 is connected to the contactor KM1 and the second receiver respectively; wherein the circuit breaker QF2 is used to control the opening or disconnection of part of the circuit of the dust reduction fan start and stop module; the contactor KM1 is used to control the start or stop of the motor M; the motor M is used to control the start or stop of the dust reduction fan.

[0007] In one embodiment, the control module includes a circuit breaker QF1, a transformer U1, a controller, a signal integrator, a first signal converter, a first receiver, a transmitter and a PLC control program; the circuit breaker QF1 is connected to the transformer U1, the transformer U1 is respectively connected to the controller, the controller is connected to the transmitter, the signal integrator is respectively connected to the transformer U1, the first receiver and the first signal converter, and the PLC control program is respectively connected to the controller and the first signal converter; wherein the circuit breaker QF1 is used to control the opening or disconnection of part of the circuit of the control module; the transformer U1 is used to reduce the voltage of 220V to 24V; the first receiver is used to collect and save the received signals in a unified manner; the first signal converter is used to convert the data of the first receiver into a signal acceptable to the PLC control program and transmit it; the PLC control program is used to compare the received signal value with the set value and then transmit the control signal.

[0008] In one embodiment, the controller includes a first controller and a second controller, and the transmitter includes a first transmitter and a second transmitter; the transformer U1 is connected to the first controller and the second controller respectively, the first controller is connected to the first transmitter, and the second controller is connected to the second transmitter.

[0009] In one of the embodiments, when the space to be tested is in normal production operation, the circuit breaker QF3 is closed and part of the circuit of the detection module is connected; the probe detects the dust concentration parameters in the working space in real time, and transmits the detection parameters to the second signal converter; the second signal converter decodes and converts the detection parameters to form a signal, and sends the signal to the third transmitter; the third transmitter sends the received signal to the first receiver.

[0010] In one of the embodiments, when the space to be tested is operating normally, the circuit breaker QF1 is closed and part of the circuit of the control module is connected; the first receiver sends the signal received from the third transmitter to the signal integrator; the signal integrator filters and converts the received signal and sends it to the PLC control program; the PLC control program compares the received signal value with the set value, and if the signal value is greater than or equal to the set value, the PLC control program sends a power signal to the controller, and the controller sends the received power signal to the transmitter, and the transmitter sends the power signal to the second receiver; if the signal value is less than the set value, the PLC control program does not send a signal.

[0011] In one of the embodiments, when the space to be tested is operating normally, the circuit breaker QF2 is closed and part of the circuit of the dust reduction fan start and stop module is connected; the second receiver sends the power signal received from the transmitter to the intermediate relay KA1, the intermediate relay is energized, and at the same time the contactor KM1 is energized, and the motor M is started.

[0012] The automatic interlocking control system for dust reduction fans provided by the present invention increases the automatic interlocking control function through the detection module, the control module and the dust reduction fan start and stop module. Each link is carried out step by step according to the logic to open or close the equipment according to the actual production situation on site, thereby realizing full-automatic control to process the dust on site. While ensuring the health of the operators, it also avoids energy waste in an intelligent way, thereby achieving the goal of green production. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the principle of a detection module according to an embodiment of the present invention;

[0014] Figure 2 This is a schematic diagram of the control module principle of an embodiment of the present invention;

[0015] Figure 3 It is a schematic diagram of the dust suppression fan start-stop module principle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the present invention, the present invention is described more comprehensively below in conjunction with specific embodiments and with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0017] An automatic interlocking control system for dust reduction fans, including a detection module, a control module and a dust reduction fan start-stop module; the control module is respectively connected to the detection module and the dust reduction fan start-stop module by signals; the detection module is used to detect the dust concentration parameters of the space to be tested; the control module is used to receive the detection data from the detection module, and control the dust reduction extension start-stop module according to the detection data; the dust reduction extension start-stop module receives the control signal of the control module, and is powered on or off according to the instruction of the control signal. According to the actual working conditions, preferably, the detection module is set to multiple, and / or the dust reduction fan start-stop module is set to multiple; that is, each detection module is respectively connected to the control module by signals, and the control module can receive the dust concentration parameter values ​​of different spaces to be tested measured by each detection module; each dust reduction fan start-stop module is respectively connected to the control module by signals, and the control module sends matching signals to each dust reduction fan start-stop module to realize the power on or off function.

[0018] Specifically, the control module includes a circuit breaker QF1, a transformer U1, a controller, a signal integrator, a first signal converter, a first receiver, a transmitter and a PLC control program; the circuit breaker QF1 is connected to the transformer U1, and is used to control the opening or disconnection of part of the circuit of the control module; the transformer U1 is respectively connected to the controller, and is used to reduce the 220V voltage to 24V; the PLC control program is respectively connected to the controller and the first signal converter, and is used to compare and judge the received signal value with the set value and then transmit the control signal; the controller is connected to the transmitter, and the controller is used to transmit the opening or disconnecting signal transmitted by the PLC control program to the transmitter; the transmitter is used to transmit the signal transmitted by the controller; the signal integrator is respectively connected to the transformer U1, the first receiver and the first signal converter, and the first receiver is connected to the first signal converter. The receiver is used to collect and save the received signals in a unified manner; the first signal converter is used to convert the data of the first receiver into a signal acceptable to the PLC control program and transmit it; more preferably, the controller includes a first controller and a second controller, and the transmitter includes a first transmitter and a second transmitter; the transformer U1 is connected to the first controller and the second controller respectively, the first controller is connected to the first transmitter, and the second controller is connected to the second transmitter; the signals received by the first controller and the second controller from the PLC control program are the same signal, and the signals are transmitted to the matching first transmitter and second transmitter; the purpose of this setting is to prevent one of the first controller, the second controller, the first transmitter, and the second transmitter from malfunctioning and being unable to send signals, so as to ensure the timeliness and stability of signal transmission.

[0019] The dust reduction fan start and stop module includes a circuit breaker QF2, a contactor KM1, a motor M, an intermediate relay KA1 and a second receiver; the circuit breaker QF2 is connected to the contactor KM1, and is used to control the opening or disconnection of some circuits of the dust reduction fan start and stop module; the contactor KM1 is connected to the motor M, and is used to control the start or stop of the motor M; the intermediate relay KA1 is respectively connected to the contactor KM1 and the second receiver; the motor M is used to control the start or stop of the dust reduction fan.

[0020] The detection module includes a circuit breaker QF3, a transformer U2, a probe, a second signal converter and a third transmitter; the circuit breaker QF3 is connected to the transformer U2 to control the opening or disconnection of part of the circuit of the detection module; the transformer U2 is respectively connected to the second signal converter and the probe to reduce the 220V voltage to 24V; the probe is connected to the second signal converter, and the probe is used to detect the dust concentration parameters of the space to be tested; the second signal converter is connected to the third transmitter; the specific working process of the transformer U2 is: when the space to be tested is in normal production operation, the circuit breaker QF3 is closed, and part of the circuit of the detection module is connected; the probe detects the dust concentration parameters in the working space in real time, and transmits the detection parameters to the second signal converter; the second signal converter decodes and converts the detection parameters to form a signal, and sends the signal to the third transmitter; the third transmitter sends the received signal to the first receiver. When the probe part fails, the circuit breaker QF3 is disconnected, and the entire circuit loses power, and the maintenance personnel can check the circuit.

[0021] When the space to be tested is in normal production operation, the circuit breaker QF1 is closed, and part of the circuit of the control module is connected; the first receiver sends the signal sent by the third transmitter to the signal integrator; the signal integrator filters and converts the received signal and sends it to the PLC control program; the PLC control program compares the received signal value with the set value. If the signal value is greater than or equal to the set value, the PLC control program sends a power signal to the controller, and the controller sends the received power signal to the transmitter, and the transmitter sends the power signal to the second receiver; if the signal value is less than the set value, the PLC control program does not send a signal. When the control system fails, the circuit breaker QF1 is disconnected, and the entire circuit loses power, and maintenance personnel can check the circuit.

[0022] When the space to be tested is in normal production operation, the circuit breaker QF2 is closed, and part of the circuit of the dust suppression fan start-stop module is connected; the second receiver sends the power signal sent by the transmitter to the intermediate relay KA1, the intermediate relay is energized, and the contactor KM1 is energized, and the motor M starts, that is, the dust suppression fan starts. After the dust suppression fan is started, it drives the surrounding air to flow forward, and the dust in the air also moves forward. Under the simultaneous action of multiple dust suppression fans, the air containing dust in the grinding area is finally sent to the set position. At this position, the dust in the air is settled and collected by water mist and dust removal. In this cycle, the dust concentration in the grinding area gradually decreases and eventually reaches below the set value in the PLC control program. When the second receiver does not receive a signal, it will no longer output a signal to the intermediate relay KA1, the intermediate relay KA1 loses power and disconnects, and the entire circuit loses power. After the contactor KA1 loses power, it is also disconnected, and the dust suppression fan is turned off. When the dust suppression fan fails, disconnect the circuit breaker QF2, the entire circuit loses power, and maintenance personnel can check the circuit.

[0023] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0024] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An automatic interlocking control system for dust suppression fans, characterized in that: The control system includes a detection module, a control module and a dust reduction fan start and stop module; the control module is respectively connected to the detection module and the dust reduction fan start and stop module signals; the detection module is used to detect the dust concentration parameters of the space to be tested; the control module is used to receive the detection data from the detection module, and control the dust reduction extension start and stop module according to the detection data; the dust reduction extension start and stop module receives the control signal of the control module, and gains or loses power according to the instructions of the control signal.

2. The automatic interlocking control system for dust suppression fans according to claim 1 is characterized in that: The detection module includes a circuit breaker QF3, a transformer U2, a probe, a second signal converter and a third transmitter; the circuit breaker QF3 is connected to the transformer U2, the transformer U2 is respectively connected to the second signal converter and the probe, the probe is connected to the second signal converter, and the second signal converter is connected to the third transmitter.

3. The automatic interlocking control system for dust suppression fans according to claim 2 is characterized in that: The dust reduction fan start and stop module includes a circuit breaker QF2, a contactor KM1, a motor M, an intermediate relay KA1 and a second receiver; the circuit breaker QF2 is connected to the contactor KM1, the contactor KM1 is connected to the motor M, and the intermediate relay KA1 is connected to the contactor KM1 and the second receiver respectively.

4. The automatic interlocking control system for dust suppression fans according to claim 3 is characterized in that: The control module includes a circuit breaker QF1, a transformer U1, a controller, a signal integrator, a first signal converter, a first receiver, a transmitter and a PLC control program; the circuit breaker QF1 is connected to the transformer U1, the transformer U1 is respectively connected to the controller, the controller is connected to the transmitter, the signal integrator is respectively connected to the transformer U1, the first receiver and the first signal converter, and the PLC control program is respectively connected to the controller and the first signal converter.

5. The automatic interlocking control system for dust suppression fans according to claim 4 is characterized in that: The controller includes a first controller and a second controller, and the transmitter includes a first transmitter and a second transmitter; the transformer U1 is connected to the first controller and the second controller respectively, the first controller is connected to the first transmitter, and the second controller is connected to the second transmitter.

6. The automatic interlocking control system for dust suppression fans according to claim 3 or 4, characterized in that: When the space to be tested is in normal production operation, the circuit breaker QF3 is closed, and part of the circuit of the detection module is connected; the probe detects the dust concentration parameters in the working space in real time, and transmits the detection parameters to the second signal converter; The second signal converter decodes and converts the detection parameters to form a signal, and sends the signal to the third transmitter; the third transmitter sends the received signal to the first receiver.

7. The automatic interlocking control system for dust suppression fans according to claim 3 or 4, characterized in that: When the space to be tested is in normal production operation, the circuit breaker QF1 is closed and part of the circuit of the control module is connected; the first receiver sends the signal sent by the third transmitter to the signal integrator; the signal integrator filters and converts the received signal and sends it to the PLC control program; the PLC control program compares the received signal value with the set value, if the signal value is greater than or equal to the set value, the PLC control program sends a power signal to the controller, the controller sends the received power signal to the transmitter, and the transmitter sends the power signal to the second receiver; if the signal value is less than the set value, the PLC control program does not send a signal.

8. The automatic interlocking control system for dust suppression fans according to claim 3 or 4, characterized in that: When the space to be tested is in normal production operation, the circuit breaker QF2 is closed and part of the circuit of the dust reduction fan start and stop module is connected; the second receiver sends the power signal received from the transmitter to the intermediate relay KA1, the intermediate relay is energized, and at the same time the contactor KM1 is energized, and the motor M is started.

9. The automatic interlocking control system for dust suppression fans according to claim 1, characterized in that: The detection module is provided in plurality.

10. The automatic interlocking control system for dust suppression fans according to claim 1, characterized in that: The dust reduction fan start and stop modules are provided in plurality.

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