CN220232273U - Dust removal control circuit and device for blast furnace feeding vibrating screen - Google Patents
Dust removal control circuit and device for blast furnace feeding vibrating screen Download PDFInfo
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- CN220232273U CN220232273U CN202321649988.5U CN202321649988U CN220232273U CN 220232273 U CN220232273 U CN 220232273U CN 202321649988 U CN202321649988 U CN 202321649988U CN 220232273 U CN220232273 U CN 220232273U
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- 239000000428 dust Substances 0.000 title claims abstract description 134
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- 238000001514 detection method Methods 0.000 claims abstract description 23
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- 230000001934 delay Effects 0.000 claims abstract description 3
- 239000003990 capacitor Substances 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 5
- 239000011707 mineral Substances 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 239000002699 waste material Substances 0.000 description 4
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- 230000007774 longterm Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000004891 communication Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000008188 pellet Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- -1 sintering Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a dust removal control circuit and a dust removal control device for a blast furnace feeding vibrating screen, which relate to the technical field of intelligent dust removal, wherein when a control circuit is started, a first starting signal is input to an input end of a delay turn-off module and a first control end of a second control module, the first control module controls a dust removal motor and a discharge motor to work, when a detection module detects that the dust removal motor and the discharge motor work, a second starting signal is input to the second control end of the second control module, and the second control module controls the vibration motor and the feeding motor to work; when the dust removing and discharging device is closed, the first starting signal is stopped to be input to the input end of the delay closing module and the first control end of the second control module, the second control module stops working, the vibrating motor and the feeding motor stop working, the delay closing module delays to close the first control module, and the dust removing motor and the discharging motor stop working after a set time length of delay work. The dust removing motor and the discharging motor are turned off in a delayed mode, and dust emission can be avoided.
Description
Technical Field
The utility model relates to the technical field of intelligent dust removal, in particular to a dust removal control circuit and device for a blast furnace feeding vibrating screen.
Background
In a blast furnace feeding system, dust removal becomes a hard requirement for current metallurgical production, and particularly in the process of screening by a feeding vibrating screen, mineral aggregate dust such as pellets, sintering, coke and the like is extremely serious, and each blast furnace is provided with ten to twenty vibrating screens. But is limited by the capability of a dust removing system and the increasingly serious environmental protection problem, the dust removing effect of a feeding system is always a great problem which puzzles the steel industry, wherein aiming at a vibrating screen part, a common means is to arrange a dust removing pipeline at the top of a vibrating screen box body for dust removal in the production process, but the vibrating screen system does not continuously operate for 24 hours, the dust removing pipeline at the top of the vibrating screen continuously removes dust, and part of time wastes dust removing air quantity resources of the whole feeding system and electric energy.
Disclosure of Invention
The utility model aims to provide a dust removal control circuit and device for a blast furnace feeding vibrating screen, which solve the problem of electric energy waste caused by long-term non-shutdown operation of a dust removal motor and also solve the problem of poor dust removal effect.
In order to solve the technical problems, the utility model adopts the following technical scheme:
an aspect of the embodiment of the utility model provides a dust removal control circuit of a blast furnace feeding vibrating screen, which comprises the following components: the control circuit includes: the dust removing motor is used for removing dust, and the discharging motor is used for controlling the discharging of the vibrating screen; the output end of the first control module is connected with the dust removing motor and the input end of the discharging motor, so as to control the dust removing motor and the discharging motor to work; the input end of the delay turn-off module receives a first starting signal, and the output end of the delay turn-off module is connected with the control end of the first control module and is used for closing the first control module when in power-off delay; the input end of the detection module is connected with the dust removing motor or the input end of the discharging motor, so as to be used for detecting the working states of the dust removing motor and the discharging motor; the feeding motor is used for feeding the vibrating screen, and the vibrating motor is used for pouring the feeding motor into the vibrating screen for vibrating screening; the first control end of the second control module receives a first starting signal, the output end of the detection module is connected with the second control end of the second control module, and the output end of the second control module is connected with the input ends of the vibration motor and the feeding motor so as to control the vibration motor and the feeding motor to work; when the device is started, a first starting signal is input to the input end of the delay turn-off module and the first control end of the second control module, the delay turn-off module transmits the first starting signal to the control end of the first control module, the first control module controls the dust removal motor and the discharge motor to work, and when the detection module detects that the dust removal motor and the discharge motor work, a second starting signal is input to the second control end of the second control module, and the second control module controls the vibration motor and the feeding motor to work; when the device is closed, a first starting signal is stopped to be input to the input end of the delay shutdown module and the first control end of the second control module, the second control module stops working, the vibrating motor and the feeding motor stop working, the delay shutdown module delays to close the first control module, and the dust removal motor and the discharging motor stop working after delay working for a set period of time.
In some embodiments, the control circuit further includes a manual control module, the manual control module includes a button, a first resistor and a first PNP triode, one end of the button is grounded, the other end of the button is connected to the base of the first PNP triode through the first resistor, the emitter of the first PNP triode is connected to a first power supply, and the collector of the first PNP triode is used for outputting a first start signal.
In some embodiments, the delay turn-off module includes a fixed capacitor, a second resistor, a third resistor and a diode, one end of the fixed capacitor is connected to one end of the second resistor and one end of the third resistor, the other end of the second resistor is connected to a negative electrode of the diode, a positive electrode of the diode is connected to a collector electrode of the first PNP triode, the other end of the third resistor is connected to a control end of the first control module, and the other end of the fixed capacitor is grounded.
In some embodiments, the time-delay shutdown module further comprises a variable capacitance in parallel with the fixed capacitance.
In some embodiments, the delay turn-off module further includes a fourth resistor, one end of the fourth resistor is connected to the negative electrode of the diode, and the other end of the fourth resistor is connected to the control end of the first control module.
In some embodiments, the first control module includes a first NPN triode, a fifth resistor, a sixth resistor, a seventh resistor and a first relay, a collector of the first NPN triode is connected with a second power supply, an emitter of the first NPN triode is connected with one end of a control end of the first relay through the fifth resistor, the other end of the control end of the first relay is grounded, one end of a first controlled end of the first relay is connected with a live wire, one end of a second controlled end of the first relay is connected with the live wire, the other end of the first controlled end of the first relay is connected with one end of the dust removal motor, the other end of the dust removal motor is connected with a zero line through the sixth resistor, the other end of the second controlled end of the first relay is connected with one end of the discharge motor, and the other end of the discharge motor is connected with the zero line through the seventh resistor.
In some embodiments, the second control module includes an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a second NPN triode, a second PNP triode, and a second relay, wherein a base of the second NPN triode is connected to one end of a collector of the first PNP triode, an anode of a diode, and a ninth resistor through the eighth resistor, the other end of the ninth resistor is grounded, a collector of the second NPN triode is connected to a second power supply, an emitter of the second NPN triode is connected to an emitter of the second PNP triode through the tenth resistor, a base of the second PNP triode is connected to an output end of the detection module, a collector of the second PNP triode is grounded through a control terminal of the second relay, one end of a first controlled end of the second relay is connected to a live wire, one end of a second controlled end of the second relay is connected to one end of the live wire, the other end of the first controlled end of the second relay is connected to one end of the motor, the other end of the second controlled end of the second relay is connected to the other end of the motor through the eleventh resistor is connected to the other end of the second relay through the twelfth resistor.
In some embodiments, the detection module includes a thirteenth resistor, a fourteenth resistor and a third relay, one end of a control end of the third relay is connected with the other end of the first controlled end of the first relay and one end of the dust removing motor through the thirteenth resistor, the other end of the control end of the third relay is connected with a zero line, one end of the controlled end of the third relay is grounded, and the other end of the controlled end of the third relay is connected with the base electrode of the second PNP triode through the fourteenth resistor.
In some embodiments, the detection module further includes a transformer and a fifteenth resistor, wherein a primary coil input end of the transformer is connected to the other end of the first controlled end of the first relay and one end of the dust removal motor through the fifteenth resistor, a primary coil output end of the transformer is connected to a zero line, a secondary coil first end of the transformer is connected to one end of a control end of the third relay through the thirteenth resistor, and the other end of the control end of the third relay is connected to a secondary coil second end of the transformer.
In one aspect, the embodiment of the utility model provides a dust removal control device for a blast furnace feeding vibrating screen, which comprises the control circuit, a vibrating screen, a feeding machine, a lower gate, a dust remover, a dust removal pipeline and a belt, wherein the vibrating motor controls the vibrating screen to work, the feeding motor controls the feeding machine to work, the discharging motor controls the lower gate to work, the dust removal motor controls the dust remover to work, the dust removal pipeline is connected with the dust remover, the belt is arranged at the lower end of the lower gate, and the belt is used for transporting screened mineral aggregate.
According to the embodiment of the utility model, the dust removal control circuit and device for the blast furnace feeding vibrating screen have at least the following beneficial effects: the detection module is used for detecting the working states of the dust removing motor and the discharging motor, when the dust removing motor and the discharging motor work, the vibration motor and the feeding motor are controlled to work, and when the dust removing motor and the discharging motor stop working, the vibration motor and the feeding motor are controlled to stop working in a delayed mode, so that the problem of electric energy waste caused by long-term non-shutdown of the dust removing motor is solved. When the vibration motor and the feeding motor are turned off, the delay turn-off module is arranged to delay the turn-off of the dust removing motor and the discharging motor, and because the vibration motor and the feeding motor stop running and then part of materials do not completely fall down to the belt, the dust removing motor and the discharging motor are turned off by the delay, and dust emission can be avoided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a blast furnace charging vibratory screen dust removal control circuit according to an embodiment;
fig. 2 is a schematic structural diagram of a dust removal control device of a blast furnace feeding vibrating screen according to an embodiment.
The reference numerals are explained as follows: 1. a vibrating screen; 2. a feeding machine; 3. a lower gate; 4. a dust remover; 5. a dust removal pipeline; 6. a belt.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
The following is a brief description of the technical solution of the embodiments of the present application:
according to some embodiments, as shown in fig. 1, the application provides a dust removal control circuit for a blast furnace feeding vibrating screen, wherein the connection structure of the control circuit is as follows:
the dust removing motor M1 and the discharging motor M2, wherein the dust removing motor M1 is used for removing dust, and the discharging motor M2 is used for controlling the discharging of the vibrating screen 1;
the output end of the first control module is connected with the input ends of the dust removing motor M1 and the discharging motor M2, so as to control the dust removing motor M1 and the discharging motor M2 to work;
the input end of the delay turn-off module receives a first starting signal, and the output end of the delay turn-off module is connected with the control end of the first control module and is used for closing the first control module when in power-off delay;
the input end of the detection module is connected with the input end of the dust removal motor M1 or the discharge motor M2, so as to be used for detecting the working states of the dust removal motor M1 and the discharge motor M2;
the vibrating screen comprises a vibrating motor M3 and a feeding motor M4, wherein the feeding motor M4 is used for feeding the vibrating screen 1, and the vibrating motor M3 is used for pouring the feeding motor M4 into the vibrating screen 1 for vibrating screening;
the first control end of the second control module receives a first starting signal, the output end of the detection module is connected with the second control end of the second control module, and the output end of the second control module is connected with the input end of the vibration motor M3 and the feeding motor M4, so as to control the vibration motor M3 and the feeding motor M4 to work.
Based on the connection structure of the control circuit, the working principle is that the working condition of the first control module is that the control end of the first control module receives a first starting signal, and the working condition of the second control module is that the first control end of the second control module receives a first starting signal and the second control end of the second control module receives a second starting signal.
When the dust removing motor is started, a first starting signal is input to the input end of the delay turn-off module and the first control end of the second control module, the delay turn-off module transmits the first starting signal to the control end of the first control module, the first control module works and controls the dust removing motor M1 and the discharging motor M2 to work. At this time, the detection module detects that the dust removal motor M1 and the discharge motor M2 work, then the detection module inputs a second starting signal to a second control end of the second control module, the second control module works, and the vibration motor M3 and the feeding motor M4 are controlled to work.
And when the delay shutdown module is closed, stopping inputting the first starting signal to the input end of the delay shutdown module and the first control end of the second control module. At this time, the second control module stops working first, the vibration motor M3 and the feeding motor M4 stop working along with the same, the delay turn-off module continues to control the first control module to stop working after a set time length, and the dust removal motor M1 and the discharging motor M2 stop working after a set time length of delay working along with the same.
The set duration may be set to the delay turn-off module according to actual requirements, and in some embodiments, the set duration is 30s.
The working states of the dust removing motor M1 and the discharging motor M2 are detected through the detection module, when the dust removing motor M1 and the discharging motor M2 work, the vibration motor M3 and the feeding motor M4 are controlled to work, and when the dust removing motor M1 and the discharging motor M2 stop working, the vibration motor M3 and the feeding motor M4 are controlled to stop working in a delayed mode, so that the problem of electric energy waste caused by long-term non-shutdown of the dust removing motor M1 is solved. The delay turn-off module is arranged to turn off the dust removing motor M1 and the discharging motor M2 when the vibrating motor M3 and the feeding motor M4 are turned off, and the dust removing motor M1 and the discharging motor M2 are turned off in a delay mode because part of materials do not completely fall to the belt 6 after the vibrating motor M3 and the feeding motor M4 are stopped to run.
Preferred embodiments of the present disclosure are further elaborated below in conjunction with figures 1-2 of the present description.
According to some embodiments, as shown in fig. 1, the control circuit further includes a manual control module, where the manual control module includes a button S, a first resistor R1, and a first PNP transistor P1, one end of the button S is grounded, the other end of the button S is connected to a base of the first PNP transistor P1 through the first resistor R1, an emitter of the first PNP transistor P1 is connected to a first power supply, and a collector of the first PNP transistor P1 is used for outputting a first start signal.
The first start signal is a high level signal.
Based on the working principle of the above embodiment, when the button S is closed, the base of the first PNP transistor P1 is grounded through the first resistor R1 and the button S, and the first PNP transistor P1 is turned on and outputs a first start signal. The control switch of the manual control module adopts a PNP triode, the PNP triode is started through low level, and two ends of the button S are respectively connected with the base electrode and the place of the first PNP triode P1, so that the safety of manual opening and closing is improved. In other embodiments, the main control chip may also be used to control the on/off of the first PNP transistor P1, for example, the main control chip is disposed between the first resistor R1 and the base of the first PNP transistor P1, and when the main control chip receives a signal when the button S is turned on, the first PNP transistor P1 is controlled to be turned on, and when the main control chip receives a signal when the button S is turned off, the first PNP transistor P1 is controlled to be turned off.
According to some embodiments, as shown in fig. 1, the delay shutdown module includes a fixed capacitor C1, a second resistor R2, a third resistor R3, and a diode D, where one end of the fixed capacitor C1 is connected to one end of the second resistor R2 and one end of the third resistor R3, the other end of the second resistor R2 is connected to the negative electrode of the diode D, the positive electrode of the diode D is connected to the collector of the first PNP triode P1, the other end of the third resistor R3 is connected to the control end of the first control module, and the other end of the fixed capacitor C1 is grounded.
The working principle based on the above embodiment is that when the first start signal is input, the fixed capacitor C1 is charged, and at the same time, the first start signal is output to the control end of the first control module, so as to be used for controlling the first control module to work. When the first start signal stops inputting, the fixed capacitor C1 discharges to the control end of the first control module so as to control the first control module to work in a delayed mode.
The second resistor R2 and the third resistor R3 are used for current limiting. The capacity of the fixed capacitor C1 can be selected according to actual requirements, and the larger the capacity is, the longer the time delay is. In some embodiments, the fixed capacitor C1 employs a plurality of capacitors connected in parallel to form a large-capacity fixed capacitor C1.
Further, the collector of the first PNP transistor P1 is configured to output a first start signal to the input terminal of the delay shutdown module and the first control terminal of the second control module, so that the collector of the first PNP transistor P1 is connected to the anode of the diode D and the first control terminal of the second control module. The diode D is provided to prevent the fixed capacitor C1 from simultaneously controlling the first control module and the second control module to operate in a delayed manner when the collector of the first PNP transistor P1 stops outputting the first start signal and the fixed capacitor C1 discharges. After the diode D is arranged, the first control end of the second control module can not receive the high level output when the fixed capacitor C1 discharges, so that the operation is stopped. Only the first control module continues to work in a delayed mode, and the first control module drives the dust removal motor M1 and the discharging motor M2 to work in a delayed mode. The advantages are that: the vibrating motor M3 and the feeding motor M4 are turned off firstly (the vibrating motor M3 and the feeding motor M4 are controlled to be turned on and off by the second control module), and the dust removing motor M1 and the discharging motor M2 are turned off in a delayed mode, so that dust can be prevented from rising.
According to some embodiments, as shown in fig. 1, the time delay shutdown module further includes a variable capacitor C2, and the variable capacitor C2 is connected in parallel with the fixed capacitor C1.
The working principle based on the above embodiment is that the variable capacitor C2 is used for adjusting the delay time of the delay turn-off module, and further adjusting the time of the delay turn-off of the first control module. When the variable capacitor C2 is adjusted to the minimum capacity, the delay is performed by using the fixed capacitor C1, so that the capacity of the fixed capacitor C1 determines the shortest delay time; when the variable capacitor C2 is adjusted to the maximum capacity, the fixed capacitor C1 and the variable capacitor C2 are used for delaying, so that the maximum capacity of the variable capacitor C2 determines the longest delay time. The maximum capacity of the variable capacitor C2 can be selected according to the actual requirements. In some embodiments, variable capacitance C2 is connected in parallel with a plurality of adjustable capacitance capacitances.
According to some embodiments, as shown in fig. 1, the delay shutdown module further includes a fourth resistor R4, one end of the fourth resistor R4 is connected to the negative electrode of the diode D, and the other end of the fourth resistor R4 is connected to the control end of the first control module.
Based on the working principle of the above embodiment, the fourth resistor R4 is set, so that the first start signal can be directly input to the control end of the first control module through the shunt of the fourth resistor R4 when the first start signal charges the fixed capacitor C1 and the variable capacitor C2, so as to improve the response speed of the first control module and prevent the situation that the first control module cannot start when the fixed capacitor C1 and the variable capacitor C2 are charged.
According to some embodiments, as shown in fig. 1, the first control module includes a first NPN triode N1, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and a first relay K1, a collector of the first NPN triode N1 is connected to a second power supply, an emitter of the first NPN triode N1 is connected to one end of a control end of the first relay K1 through the fifth resistor R5, the other end of the control end of the first relay K1 is grounded, one end of a first controlled end of the first relay K1 is connected to a live wire, one end of a second controlled end of the first relay K1 is connected to the live wire, the other end of the first controlled end of the first relay K1 is connected to one end of the dust removing motor M1, the other end of the dust removing motor M1 is connected to a zero wire through the sixth resistor R6, the other end of the second controlled end of the first relay K1 is connected to one end of the discharging motor M2, and the other end of the discharging motor M2 is connected to the zero wire through the seventh resistor R7.
Based on the working principle of the embodiment, when a first starting signal is input to the base electrode of the first NPN triode N1 through the delay turn-off module, the first NPN triode N1 is conducted, the control end (coil end) of the first relay K1 is powered on, the first controlled end and the second controlled end of the first relay K1 are attracted, the dust collection motor M1 starts dust collection work, and the discharging motor M2 controls the lower gate 3 to be opened. After the first starting signal is turned off, the delay turn-off module controls the first NPN triode N1 to be turned off after the first NPN triode N1 is turned on for a set period of time, the first controlled end and the second controlled end of the first relay K1 are disconnected, the dust removal motor M1 stops working, and the discharging motor M2 controls the lower gate 3 to be turned off. The fifth resistor R5, the sixth resistor R6 and the seventh resistor R7 are all used for current limiting protection.
According to some embodiments, as shown in fig. 1, the second control module includes an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a second NPN triode N2, a second PNP triode P2, and a second relay K2, where the base of the second PNP triode N2 is connected to the collector of the first PNP triode P1, the positive electrode of the diode D, and one end of the ninth resistor R9 through the eighth resistor R8, the other end of the ninth resistor R9 is grounded, the collector of the second NPN triode N2 is connected to the second power supply, the emitter of the second PNP triode N2 is connected to the output end of the detection module through the tenth resistor R10, the collector of the second PNP triode P2 is grounded through the control terminal of the second relay K2, the first controlled end of the second relay K2 is connected to the first end of the second relay K2, the other end of the second relay K is connected to the other end of the second relay K2 through the second wire, and the other end of the second relay K2 is connected to the other end of the second relay K3, and the other end of the second relay K2 is connected to the second end of the vibration motor through the third end of the fourth resistor 3.
Based on the working principle of the above embodiment, after the collector electrode of the first PNP triode P1 outputs the first start signal, a part of the first start signal is input to the delay turn-off module, and the other part is input to the base electrode of the second NPN triode N2 through the eighth resistor R8, and the second NPN triode N2 is turned on; after the detection module detects that the dust removal motor M1 and the discharge motor M2 work, a second starting signal (low level signal) is output to the base electrode of the second PNP triode P2, and the second PNP triode P2 is conducted. After the second NPN triode N2 and the second PNP triode P2 are conducted, the control end (coil end) of the second relay K2 is powered on, the first controlled end and the second controlled end of the second relay K2 are attracted, the feeding motor M4 starts feeding, and the vibrating motor M3 starts vibrating and sieving materials. After the first start signal is turned off, the base electrode of the second NPN triode N2 is grounded through the eighth resistor R8 and the ninth resistor R9, the second NPN triode N2 is turned off, at this time, although the second PNP triode P2 is turned on, no power is input to the emitter electrode of the second PNP triode P2, so the collector electrode of the second PNP triode P2 does not output, the control end (coil end) of the second relay K2 is powered off, the first controlled end and the second controlled end of the second relay K2 are disconnected, the feeding motor M4 stops feeding, and the vibration motor M3 stops vibrating. The eighth resistor R8, the tenth resistor R10, the eleventh resistor R11 and the twelfth resistor R12 are all used for current limiting protection, and the ninth resistor R9 is used for keeping the second NPN triode N2 turned off, eliminating static electricity, and preventing the second NPN triode N2 from being turned on due to external interference signals.
According to some embodiments, the detection module includes a thirteenth resistor R13, a fourteenth resistor R14, and a third relay K3, one end of a control end of the third relay K3 is connected to the other end of the first controlled end of the first relay K1 and one end of the dust removing motor M1 through the thirteenth resistor R13, the other end of the control end of the third relay K3 is connected to a zero line, one end of the controlled end of the third relay K3 is grounded, and the other end of the controlled end of the third relay K3 is connected to the base electrode of the second PNP triode P2 through the fourteenth resistor R14.
The thirteenth resistor R13 and the fourteenth resistor R14 are used for current limiting protection.
When the first relay K1 is in suction, the dust removing motor M1 and the discharging motor M2 are in a working state, namely the dust removing motor M1 is started in a dust removing mode, and the discharging motor M2 is started in a lower gate 3. At this time, the control end (coil end) of the third relay K3 also receives the electric signal, the controlled end of the third relay K3 is attracted, the base of the second PNP transistor P2 receives the second start signal (low level signal) through the fourteenth resistor R14 and the controlled end of the third relay K3, and the second PNP transistor P2 is turned on.
According to some embodiments, as shown in fig. 1, the detection module further includes a transformer T and a fifteenth resistor R15, where an input end of a primary coil of the transformer T is connected to the other end of the first controlled end of the first relay K1 and one end of the dust removing motor M1 through the fifteenth resistor R15, an output end of a primary coil of the transformer T is connected to a zero line, a first end of a secondary coil of the transformer T is connected to one end of a control end of the third relay K3 through the thirteenth resistor R13, and the other end of the control end of the third relay K3 is connected to a second end of the secondary coil of the transformer T.
The fifteenth resistor R15 is used for current limiting protection.
The working principle based on the above embodiment is that when the first relay K1 is in suction, the dust removing motor M1 and the discharging motor M2 are both in working states, that is, the dust removing motor M1 is turned on to be in a dust removing mode, and the discharging motor M2 is turned on to be in a lower gate 3. At this time, the primary coil of the transformer T is powered on, and after the secondary coil of the transformer T is stepped down, a power supply is output to the control end (coil end) of the third relay K3, the controlled end of the third relay K3 is attracted, the base of the second PNP triode P2 receives the second start signal (low level signal) through the fourteenth resistor R14 and the controlled end of the third relay K3, and the second PNP triode P2 is turned on. After the transformer T is added, the AC power supply after voltage reduction is more suitable for the control end (coil end) of the third relay K3, and the effect of protecting the third relay K3 is achieved.
According to some embodiments, as shown in fig. 2, the application provides a dust removal control device for a blast furnace feeding vibrating screen, the control device comprises a control circuit as described above, and a vibrating screen 1, a feeding machine 2, a lower gate 3, a dust remover 4, a dust removal pipeline 5 and a belt 6, wherein the vibrating motor M3 controls the vibrating screen 1 to work, the feeding motor M4 controls the feeding machine 2 to work, the discharging motor M2 controls the lower gate 3 to work, the dust removal motor M1 controls the dust remover 4 to work, the dust removal pipeline 5 is connected with the dust remover 4, the belt 6 is arranged at the lower end of the lower gate 3, and the belt 6 is used for transporting screened mineral aggregates.
Based on the above embodiment, the vibration motor M3 controls the vibration of the vibration screen 1 for screening the material on the vibration screen 1. The feeding motor M4 controls the feeding machine 2 to take materials and feed materials, and the raw materials are poured onto the vibrating screen 1. The discharging motor M2 controls the lower gate 3 to be opened or closed. The dust removing motor M1 controls the dust remover 4 to remove dust or stop dust removal. A belt 6 is provided at the lower end of the lower sluice gate 3 for transporting the sieved mineral aggregate. The dust removal pipe 5 is arranged at the upper end of the dust remover 4. In some embodiments, as shown in fig. 2, a plurality of blast furnace feeding vibrating screen dust removal control devices are connected, and dust removal pipelines 5 at the upper ends of the blast furnace feeding vibrating screen dust removal control devices are all connected into a whole to form an integrated dust removal pipeline, and the integrated dust removal pipeline conveys dust collected by the blast furnace feeding vibrating screen dust removal control devices to the same designated treatment position. Simple structure, cost saving.
In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
While the present disclosure has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration rather than of limitation. As the present disclosure may be embodied in several forms without departing from the spirit or essential attributes thereof, it should be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalences of such metes and bounds are therefore intended to be embraced by the appended claims.
Claims (10)
1. The utility model provides a blast furnace material loading shale shaker dust removal control circuit which characterized in that, control circuit includes:
the dust removing motor is used for removing dust, and the discharging motor is used for controlling the discharging of the vibrating screen;
the output end of the first control module is connected with the dust removing motor and the input end of the discharging motor, so as to control the dust removing motor and the discharging motor to work;
the input end of the delay turn-off module receives a first starting signal, and the output end of the delay turn-off module is connected with the control end of the first control module and is used for closing the first control module when in power-off delay;
the input end of the detection module is connected with the dust removing motor or the input end of the discharging motor, so as to be used for detecting the working states of the dust removing motor and the discharging motor;
the feeding motor is used for feeding the vibrating screen, and the vibrating motor is used for pouring the feeding motor into the vibrating screen for vibrating screening;
the first control end of the second control module receives a first starting signal, the output end of the detection module is connected with the second control end of the second control module, and the output end of the second control module is connected with the input ends of the vibration motor and the feeding motor so as to control the vibration motor and the feeding motor to work;
when the device is started, a first starting signal is input to the input end of the delay turn-off module and the first control end of the second control module, the delay turn-off module transmits the first starting signal to the control end of the first control module, the first control module controls the dust removal motor and the discharge motor to work, and when the detection module detects that the dust removal motor and the discharge motor work, a second starting signal is input to the second control end of the second control module, and the second control module controls the vibration motor and the feeding motor to work;
when the device is closed, a first starting signal is stopped to be input to the input end of the delay shutdown module and the first control end of the second control module, the second control module stops working, the vibrating motor and the feeding motor stop working, the delay shutdown module delays to close the first control module, and the dust removal motor and the discharging motor stop working after delay working for a set period of time.
2. The control circuit of claim 1, further comprising a manual control module, wherein the manual control module comprises a button, a first resistor and a first PNP transistor, wherein one end of the button is grounded, the other end of the button is connected to a base of the first PNP transistor through the first resistor, an emitter of the first PNP transistor is connected to a first power supply, and a collector of the first PNP transistor is configured to output a first start signal.
3. The control circuit of claim 2, wherein the delay turn-off module comprises a fixed capacitor, a second resistor, a third resistor and a diode, one end of the fixed capacitor is connected to one end of the second resistor and one end of the third resistor, the other end of the second resistor is connected to the negative electrode of the diode, the positive electrode of the diode is connected to the collector electrode of the first PNP triode, the other end of the third resistor is connected to the control end of the first control module, and the other end of the fixed capacitor is grounded.
4. The control circuit of claim 3, wherein the time-delay shutdown module further comprises a variable capacitance in parallel with the fixed capacitance.
5. The control circuit of claim 3, wherein the delayed shutdown module further comprises a fourth resistor, one end of the fourth resistor is connected to the negative electrode of the diode, and the other end of the fourth resistor is connected to the control end of the first control module.
6. The control circuit of claim 5, wherein the first control module comprises a first NPN triode, a fifth resistor, a sixth resistor, a seventh resistor and a first relay, a collector of the first NPN triode is connected with a second power supply, an emitter of the first NPN triode is connected with one end of a control end of the first relay through the fifth resistor, the other end of the control end of the first relay is grounded, one end of a first controlled end of the first relay is connected with a live wire, one end of a second controlled end of the first relay is connected with the live wire, the other end of the first controlled end of the first relay is connected with one end of the dust removal motor, the other end of the dust removal motor is connected with a zero wire through the sixth resistor, the other end of the second controlled end of the first relay is connected with one end of the discharge motor, and the other end of the discharge motor is connected with the zero wire through the seventh resistor.
7. The control circuit of claim 6, wherein the second control module comprises an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a second NPN triode, a second PNP triode and a second relay, wherein a base electrode of the second NPN triode is connected with a collector electrode of the first PNP triode, an anode of a diode and one end of the ninth resistor through the eighth resistor, the other end of the ninth resistor is grounded, a collector electrode of the second NPN triode is connected with a second power supply, an emitter electrode of the second NPN triode is connected with an emitter electrode of the second PNP triode through the tenth resistor, a base electrode of the second PNP triode is connected with an output end of the detection module, a collector electrode of the second PNP triode is grounded through a control terminal of the second relay, one end of a first controlled end of the second relay is connected with a live wire, one end of a second controlled end of the second relay is connected with one end of the second power supply, an emitter electrode of the second controlled end of the second relay is connected with a first end of the motor is connected with the other end of the second relay, the other end of the second relay is connected with the other end of the second relay through a live wire, and the other end of the second PNP is connected with the other end of the second relay is connected with the other end of the vibration motor.
8. The control circuit of claim 7, wherein the detection module comprises a thirteenth resistor, a fourteenth resistor and a third relay, one end of a control end of the third relay is connected with the other end of the first controlled end of the first relay and one end of the dust removal motor through the thirteenth resistor, the other end of the control end of the third relay is connected with a zero line, one end of the controlled end of the third relay is grounded, and the other end of the controlled end of the third relay is connected with the base electrode of the second PNP triode through the fourteenth resistor.
9. The control circuit of claim 8, wherein the detection module further comprises a transformer and a fifteenth resistor, wherein a primary coil input end of the transformer is connected to the other end of the first controlled end of the first relay and one end of the dust removal motor through the fifteenth resistor, a primary coil output end of the transformer is connected to a zero line, a secondary coil first end of the transformer is connected to a control end of the third relay through the thirteenth resistor, and a control end other end of the third relay is connected to a secondary coil second end of the transformer.
10. The dust removal control device for the blast furnace feeding vibrating screen is characterized by comprising the control circuit as claimed in any one of claims 1 to 9, a vibrating screen, a feeding machine, a lower gate, a dust remover, a dust removal pipeline and a belt, wherein the vibrating motor controls the vibrating screen to work, the feeding motor controls the feeding machine to work, the discharging motor controls the lower gate to work, the dust removal motor controls the dust remover to work, the dust removal pipeline is connected with the dust remover, the belt is arranged at the lower end of the lower gate, and the belt is used for transporting screened mineral aggregate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321649988.5U CN220232273U (en) | 2023-06-27 | 2023-06-27 | Dust removal control circuit and device for blast furnace feeding vibrating screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321649988.5U CN220232273U (en) | 2023-06-27 | 2023-06-27 | Dust removal control circuit and device for blast furnace feeding vibrating screen |
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| Publication Number | Publication Date |
|---|---|
| CN220232273U true CN220232273U (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321649988.5U Active CN220232273U (en) | 2023-06-27 | 2023-06-27 | Dust removal control circuit and device for blast furnace feeding vibrating screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220232273U (en) |
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2023
- 2023-06-27 CN CN202321649988.5U patent/CN220232273U/en active Active
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