Control system of electromagnetic valve, anti-blocking device and anti-blocking method

Abstract

The invention discloses a control system of an electromagnetic valve, an anti-blocking device and an anti-blocking method. The control system comprises a signal input end, a control module, an intermediate relay and a blowing electromagnetic valve. The signal input end is connected with the input end of the control module, the output end of the control module is connected with the input end of the intermediate relay, and the output end of the intermediate relay is connected with the blowing electromagnetic valve; a first control signal of the signal input end is transmitted to the control module, and the control module adjusts the state of a coil of the intermediate relay according to the first control signal; the state of the coil further adjusts the on or off of the blowing electromagnetic valve; at the first moment, the control module controls the coil to be powered off, and then the coil is powered off to control the blowing electromagnetic valve to be turned off; at the second moment, the control module controls the coil to be electrified, and the coil is electrified to control the blowing electromagnetic valve to be conducted; the first moment is adjacent to the second moment. By means of the technical scheme, intermittent control over the blowing electromagnetic valve can be achieved, and the labor cost can be saved.

Description

Technical Field

[0001] The present invention relates to the field of electrical control technology, and in particular to a control system, an anti-blocking device and an anti-blocking method of a solenoid valve. Background Art

[0002] Spray solenoid valves are common in production. For example, in some separation devices, by setting a spray solenoid valve at the end of the separation device, materials of different weights can be separated by spraying. However, in the prior art, the control of the spray solenoid valve is generally operated manually, which requires a large manpower cost; at the same time, the failure of the spray solenoid valve to be turned on in time may cause material blockage. Summary of the invention

[0003] The present invention provides a control system, an anti-clogging device and an anti-clogging method of a solenoid valve, which can realize intermittent control of the spray solenoid valve and save manpower costs.

[0004] According to one aspect of the present invention, a control system of a solenoid valve is provided, the control system comprising: a signal input terminal, a control module, an intermediate relay and a spray solenoid valve;

[0005] The signal input end is connected to the input end of the control module, the output end of the control module is connected to the input end of the intermediate relay, and the output end of the intermediate relay is connected to the spray solenoid valve;

[0006] The first control signal of the signal input terminal is transmitted to the control module, and the control module adjusts the state of the coil of the intermediate relay according to the first control signal; the state of the coil further adjusts the on or off of the spray solenoid valve;

[0007] Among them, at the first moment, the control module controls the coil to lose power, and the coil loses power and controls the blowing solenoid valve to be turned off; at the second moment, the control module controls the coil to be energized, and the coil is energized to control the blowing solenoid valve to be turned on; the first moment is adjacent to the second moment.

[0008] Optionally, the control module includes a programmable logic controller.

[0009] Optionally, the control module includes a delayed on timer and a delayed off timer;

[0010] The preset time of the delay-on timer includes a first preset time, and the delay-on timer is turned on after the first preset time;

[0011] The preset time of the delay disconnection timer includes a second preset time, and the delay disconnection timer is disconnected after the second preset time;

[0012] The time length of the first preset time is equal to the time length from the start time to the end time of the first moment, and the time length of the second preset time is equal to the time length from the start time to the end time of the second moment.

[0013] Optionally, the control module includes an output module, and the output module is connected to the intermediate relay;

[0014] The output module includes a digital output unit.

[0015] Optionally, the first moment is T1, and the second moment is T2, satisfying: 200s≤T1≤400s, 1s≤T2≤5s.

[0016] According to another aspect of the present invention, there is provided an anti-blocking device, comprising the control system described above;

[0017] Also included: separator and duct;

[0018] The first end of the separator is connected to the air duct; the second end of the separator is provided with the spray solenoid valve.

[0019] According to another aspect of the present invention, an anti-blocking method is provided, which is applied to the anti-blocking device; the anti-blocking device includes a control system, and the control system includes: a signal input end, a control module, an intermediate relay and a spray solenoid valve; the signal input end is connected to the input end of the control module, the output end of the control module is connected to the input end of the intermediate relay, and the output end of the intermediate relay is connected to the spray solenoid valve; the anti-blocking method includes:

[0020] Acquire the first control signal; adjust the state of the coil of the intermediate relay according to the first control signal, and then adjust the spray solenoid valve to be turned on or off;

[0021] At the first moment, the coil is controlled to lose power and the spray solenoid valve is controlled to be turned off; the spray solenoid valve is turned off and does not spray the separator;

[0022] At the second moment, the coil is controlled to be energized and the spray solenoid valve is controlled to be turned on; the spray solenoid valve is turned on to spray the separator; wherein the first moment is adjacent to the second moment.

[0023] Optionally, after controlling the coil to be energized and controlling the spray solenoid valve to be turned on, the method further includes:

[0024] Determining whether a second control signal is received;

[0025] If the second control signal is received, then at the first moment, the coil is controlled to lose power and the spray solenoid valve is controlled to be turned off;

[0026] If the second control signal is not received, the intermediate relay is controlled to reset.

[0027] Optionally, the control module includes a delayed on timer and a delayed off timer; the preset time of the delayed on timer includes a first preset time, and the delayed on timer is turned on after the first preset time; the preset time of the delayed off timer includes a second preset time, and the delayed off timer is turned off after the second preset time; the time length of the first preset time is equal to the time length from the start time to the end time of the first moment, and the time length of the second preset time is equal to the time length from the start time to the end time of the second moment;

[0028] At the first moment, controlling the coil to lose power and controlling the spray solenoid valve to shut down includes:

[0029] Controlling the delay-on timer to start at the start time of the first moment, and the delay-on timer to be turned on after the first preset time;

[0030] At the second moment, controlling the coil to be energized and controlling the spray solenoid valve to be turned on includes:

[0031] The on-off timer is controlled to start at the start time of the second time, and the on-off timer is disconnected after the second preset time.

[0032] Optionally, if the second control signal is not received, controlling the intermediate relay to reset includes:

[0033] Control the reset of the delay-on timer and the delay-off timer.

[0034] The solenoid valve control system of an embodiment of the present invention includes: a signal input end, a control module, an intermediate relay and a blowing solenoid valve, wherein the signal input end is connected to the control module, the intermediate relay and the blowing solenoid valve in sequence, and the first control signal provided by the signal input end is transmitted to the control module, and the control module adjusts the coil of the intermediate relay according to the first control signal, and further, the switching state of the blowing solenoid valve is adjusted by adjusting the coil of the intermediate relay; specifically, at a first moment, the control module controls the coil to lose power, and the coil loses power and thus controls the blowing solenoid valve to be turned off; at a second moment, the control module controls the coil to be energized, and the coil is energized and thus controls the blowing solenoid valve to be turned on; the first moment is adjacent to the second moment, which can also be understood as the control module, after receiving the first control signal, alternately controls the intermediate relay at the first moment and the second moment, thereby realizing intermittent control of the blowing solenoid valve, which is beneficial to improving the working efficiency of the blowing solenoid valve and can also save labor costs.

[0035] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 It is a structural schematic diagram of a control system of a first solenoid valve provided by an embodiment of the present invention;

[0038] Figure 2 is a structural schematic diagram of a control system of a second solenoid valve provided in an embodiment of the present invention;

[0039] Figure 3 is a ladder diagram of a control module provided by an embodiment of the present invention;

[0040] Figure 4 is a structural schematic diagram of an anti-blocking device provided by an embodiment of the present invention;

[0041] Figure 5 This is a flow chart of a first anti-blocking method provided by an embodiment of the present invention;

[0042] Figure 6 This is a flow chart of a second anti-blocking method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0045] Figure 1 is a schematic diagram of the structure of the control system of the first solenoid valve provided by the embodiment of the present invention, with reference to Figure 1 As shown, the present invention discloses a control system 10 of a solenoid valve, which includes: a signal input terminal 100, a control module 200, an intermediate relay 300 and a blowing solenoid valve 400; the signal input terminal 100 is connected to the input terminal of the control module 200, the output terminal of the control module 200 is connected to the input terminal of the intermediate relay 300, and the output terminal of the intermediate relay 300 is connected to the blowing solenoid valve 400; a first control signal of the signal input terminal 100 is transmitted to the control module 200, and the control module 200 adjusts the state of the coil of the intermediate relay 300 according to the first control signal; the state of the coil further adjusts the blowing solenoid valve 400 to be turned on or off; wherein, at a first moment, the control module 200 controls the coil to lose power, and the coil loses power and further controls the blowing solenoid valve 400 to be turned off; at a second moment, the control module 200 controls the coil to be energized, and the coil is energized and further controls the blowing solenoid valve 400 to be turned on; the first moment is adjacent to the second moment.

[0046] Among them, the blowing solenoid valve 400 is a mechanical equipment used in industrial production. When the blowing solenoid valve 400 is turned on, it can be sprayed. Its electromagnetic coil generates electromagnetic force to lift the closing part from the valve seat, and the valve opens; when the blowing solenoid valve 400 is powered off, its electromagnetic force disappears, and the spring presses the closing part on the valve seat, and the valve closes. The blowing solenoid valve 400 can be used in a separation device. For example, a stalk collection and dust removal device includes a blowing solenoid valve. By controlling the connection of the blowing solenoid valve 400, the compressed air in the separator of tobacco and stalks can be made to run upward, and the stalks at the drop port can be blown to break up the stalks and make them fall smoothly. However, the blowing solenoid valve in the stalk collection and dust removal device needs to be manually operated and controlled, which consumes a certain amount of manpower cost; and if the operator fails to turn on the blowing solenoid valve in time, the drop port will be blocked, thereby affecting the separation efficiency. In this way, the universality of the blowing solenoid valve 400 is reflected, so that the control efficiency of the blowing solenoid valve 400 is improved, and the work efficiency in the field where the blowing solenoid valve 400 is applied can be improved.

[0047] Specifically, refer to Figure 1 As shown, the control system 10 of the solenoid valve also includes a signal input terminal 100 and a control module 200, and the signal input terminal 100 is connected to the control module 200. Exemplarily, the signal input terminal 100 and the control module 200 can be electrically connected or communicated, etc. The specific connection method can be adaptively adjusted according to different actual needs, and the embodiment of the present invention does not specifically limit this. Among them, the signal input terminal 100 transmits the first control signal to the control module 200, and the control module 200 adjusts the spray solenoid valve 400 based on the first control signal. Among them, the first control signal can be understood as a power-on signal, etc., and the signal input terminal 100 can be understood as a human-machine interaction interface, or a device opening device, etc. For the specific type of the signal input terminal 100, it can be adaptively adjusted according to different needs. Optionally, the control module 200 includes a programmable logic controller. A programmable logic controller (PLC) is a digital operation electronic system designed specifically for use in an industrial environment. It uses a programmable memory, which stores instructions for executing logical operations, sequential control, timing, counting and arithmetic operations, and controls various types of mechanical equipment or production processes through digital or analog input and output. In other words, the control module 200 pre-stores the control process of the spray solenoid valve 400, and the first control signal transmitted by the signal input terminal 100 is transmitted to the control module 400 as a start instruction, and the control module 400 then adjusts the spray solenoid valve 400.

[0048] Furthermore, the control system 10 also includes an intermediate relay 300, which is located between the control module 200 and the spray solenoid valve 400. By adding the intermediate relay 300, the control module 200 can ensure that the regulation of the spray solenoid valve 400 is more stable, thereby ensuring the overall working efficiency. Among them, the intermediate relay 300 includes a coil. When the coil of the intermediate relay 300 is in an energized state, the spray solenoid valve 400 can be turned on; when the coil of the intermediate relay 300 is in an off-power state, the spray solenoid valve 400 can be turned off. Therefore, the control module 200 in the control system 10 realizes indirect control of the spray solenoid valve 400 by controlling the energized and de-energized states of the coil of the intermediate relay 300.

[0049] Specifically, after receiving the first control signal provided by the signal input terminal 100, the control module 200 controls the coil of the intermediate relay 300 to adjust the power on and off. At the first moment, the control module 200 controls the coil to lose power, and the coil loses power and controls the spray solenoid valve 400 to be turned off; at the second moment, the control module 200 controls the coil to be energized, and the coil is energized to control the spray solenoid valve 400 to be turned on. Among them, the first moment and the second moment are adjacent, so it can be understood that the control module 200 controls the spray solenoid valve 400 to be in different states at two adjacent moments. Furthermore, the first moment and the second moment are adjacent and arranged alternately, such as the first moment, the second moment, the first moment, the second moment..., and such an alternating arrangement is used to realize intermittent control of the spray solenoid valve 400.

[0050] Optionally, the first moment is T1, and the second moment is T2, satisfying: 200s≤T1≤400s, 1s≤T2≤5s.

[0051] The first time is T1, and T1 satisfies: 200s≤T1≤400s. For example, T1 can be 200s, 300s, 350s or 400s. The specific time length of T1 can be adaptively adjusted according to actual needs. The second time is T2, and T2 satisfies: 1s≤T1≤5s. For example, T2 can be 1s, 3s, 4s or 5s. The specific time length of T2 can be adaptively adjusted according to actual needs.

[0052] In summary, an embodiment of the present invention provides a control device for a solenoid valve. At a first moment, the control module controls the coil to lose power, and the coil loses power and controls the blowing solenoid valve to be turned off; at a second moment, the control module controls the coil to be energized, and the coil is energized to control the blowing solenoid valve to be turned on; the first moment is adjacent to the second moment, which can also be understood as the control module, after receiving the first control signal, alternately controls the intermediate relay at the first moment and the second moment, thereby realizing intermittent control of the blowing solenoid valve, which is beneficial to improving the working efficiency of the blowing solenoid valve and can also save labor costs.

[0053] Figure 2 is a schematic diagram of the structure of a control system of a second solenoid valve provided in an embodiment of the present invention, with reference to Figure 2 As shown, the control module 200 includes a delayed on timer 210 and a delayed off timer 220; the preset time of the delayed on timer 210 includes a first preset time, and the delayed on timer 210 is turned on after the first preset time; the preset time of the delayed off timer 220 includes a second preset time, and the delayed off timer 220 is turned off after the second preset time; the time length of the first preset time is equal to the time length from the start time to the end time of the first moment, and the time length of the second preset time is equal to the time length from the start time to the end time of the second moment.

[0054] Specifically, the control module 200 includes a delayed on timer 210 and a delayed off timer 220, which can be understood as the control module 200 adds the delayed on timer 210 and the delayed off timer 220 when setting the program. Among them, the preset time of the delayed on timer 210 includes a first preset time, and the delayed on timer 210 is turned on after the first preset time, and the area where the extended on timer 210 is located after the conduction is equivalent to a passage. The preset time of the delayed off timer 220 includes a second preset time, and the delayed off timer 220 is disconnected after the second preset time, and the area where the delayed off timer 220 is located after the disconnection is equivalent to a short circuit. By setting the delayed on timer 210 and the delayed off timer 220, the control module 200 can realize intermittent control of the intermediate relay 300, and then realize intermittent control of the spray solenoid valve 400.

[0055] The time length of the first preset time is equal to the time length from the start time to the end time of the first moment. For example, when the time length of the first moment is 300s, the time length of the first preset time is also 300s; the time length of the second preset time is equal to the time length from the start time to the end time of the second moment. For example, when the time length of the second moment is 3s, the time length of the second preset time is also 3s. The specific time length can be adaptively adjusted according to different needs.

[0056] Figure 3 is a ladder diagram of a control module provided by an embodiment of the present invention, and further reference is made to Figure 2 and Figure 3 As shown, the control module 200 includes an output module 230 , and the output module 230 is connected to the intermediate relay 300 ; the output module 230 includes a digital output unit.

[0057] For further reference, Figure 2 As shown, the control module 200 also includes an output module 230, which is connected to the intermediate relay 300. When the signal transmitted in the control module 200 is transmitted to the output module 230 through the delay connection timer 210 and the delay disconnection timer 220, the coil of the intermediate relay 300 is controlled to be energized, thereby controlling the conduction of the spray solenoid valve 400. Among them, the output module 230 includes a digital output unit, and the state of the coil of the intermediate relay 300 is intermittently adjusted by the digital output unit. And the digital output unit can improve the control accuracy of the intermediate relay 300, thereby ensuring the working stability and accuracy of the control system 10.

[0058] For further reference, Figure 3 As shown, when the control module 200 receives a signal input from the signal input terminal 100, its program operation can be combined with Figure 3 , the first normally open switch 240 is closed, and the signal is transmitted to the delayed connection timer 210 through the first normally closed switch 250. After the first preset time or the first moment, the extended connection timer 210 is closed, and the second normally open switch 260 is closed. The signal controlling the conduction of the intermediate relay 300 can be energized through the output module 230 so that the coil of the intermediate relay 300 is energized, and then the spraying solenoid valve 400 is turned on to achieve spraying. After the second moment, after the delayed disconnection timer 220 meets the second preset time, the delayed disconnection timer 220 is disconnected, and then the signal controlling the conduction of the intermediate relay 300 cannot be transmitted to the intermediate relay 300 through the output module 230, so the coil of the intermediate relay 300 loses power, the spraying solenoid valve 400 is disconnected, and the spraying stops. The process of controlling the spraying solenoid valve 400 to be turned on and the process of controlling the spraying solenoid valve 400 to be turned off can be executed cyclically to achieve intermittent operation of spraying. It should be noted that, for the delay on timer 210, IN refers to the input of the signal, Q refers to the output of the signal, PT refers to the first preset time, and ET refers to the current time; for the delay off timer 220, IN refers to the input of the signal, Q refers to the output of the signal, PT refers to the second preset time, and ET refers to the current time.

[0059] Based on the same inventive concept, an embodiment of the present invention further provides an anti-blocking device. Figure 4is a schematic diagram of the structure of an anti-blocking device provided by an embodiment of the present invention, with reference to Figure 4 As shown, the anti-blocking device 20 includes the control system 10 described in any of the above embodiments, so the anti-blocking device 20 provided in the embodiment of the present invention has the corresponding beneficial effects in the above embodiments, which will not be repeated here. Further, the anti-blocking device 20 also includes: a separator 21 and an air duct 22; the first end of the separator 21 is connected to the air duct 22; and the second end of the separator 21 is provided with a spray solenoid valve 400. Exemplarily, the anti-blocking device can be applied to the cigarette production process. Specifically, the heavy impurities such as large stems and agglomerated tobacco in the tobacco shreds conveyed by air will be separated by the stem anti-blocking device of each cigarette machine, and the negative pressure power is provided by the fan, and the stems and the like fall to the bottom under the action of centrifugal force, and then are discharged through the bottom ash discharge valve, and finally are collected in a centralized manner. By controlling the intermittent operation of the spray solenoid valve, the accumulation of materials at the ash discharge valve can be avoided, and the separation efficiency of the separation device can be improved.

[0060] Based on the same inventive concept, an embodiment of the present invention provides an anti-blocking method. Figure 5 This is a flow chart of the first anti-blocking method provided by an embodiment of the present invention, refer to Figure 5 As shown, anti-clogging includes:

[0061] S110: Acquire a first control signal.

[0062] Among them, the blowing solenoid valve is a mechanical equipment used in industrial production. When the blowing solenoid valve is turned on, it can be sprayed. Its electromagnetic coil generates electromagnetic force to lift the closing part from the valve seat and the valve opens; when the blowing solenoid valve is powered off, its electromagnetic force disappears, the spring presses the closing part on the valve seat, and the valve closes. The blowing solenoid valve can be used in a separation device. For example, a stalk collection and dust removal device includes a blowing solenoid valve. By controlling the connection of the blowing solenoid valve, the compressed air in the separator of tobacco and stalks can be made to run upward, and the stalks at the drop port can be blown to break up the stalks and make them fall smoothly. However, the blowing solenoid valve in the stalk collection and dust removal device needs to be manually operated and controlled, which requires a certain amount of manpower cost; and when the operator fails to connect the blowing solenoid valve in time, it will cause the drop port to be blocked, thereby affecting the separation efficiency. In this way, the universality of the blowing solenoid valve is reflected. Therefore, improving the control efficiency of the blowing solenoid valve can improve the work efficiency in the field where the blowing solenoid valve is applied.

[0063] Specifically, the electromagnetic valve regulation control system includes a signal input terminal and a control module, and the signal input terminal is connected to the control module. Exemplarily, the signal input terminal and the control module can be electrically connected or communicated, etc., and the specific connection mode can be adaptively adjusted according to different actual needs, and the embodiment of the present invention does not specifically limit this. Among them, the signal input terminal transmits the first control signal to the control module, and the control module adjusts the spray electromagnetic valve based on the first control signal. Among them, the first control signal can be understood as a power-on signal, etc., and the signal input terminal can be understood as a human-machine interaction interface, or a device opening device, etc. For the specific type of the signal input terminal, it can be adaptively adjusted according to different needs. Optionally, the control module includes a programmable logic controller. A programmable logic controller (PLC) is a digital operation electronic system designed specifically for use in an industrial environment. It uses a programmable memory to store instructions for performing operations such as logical operations, sequential control, timing, counting and arithmetic operations, and controls various types of mechanical equipment or production processes through digital or analog input and output. In other words, the control module pre-stores the control process of the blowing solenoid valve, and the first control signal transmitted by the signal input terminal is transmitted to the control module as a start-up instruction, and the control module then adjusts the blowing solenoid valve. Furthermore, the control system also includes an intermediate relay, which is located between the control module and the blowing solenoid valve. By adding the intermediate relay, the control module can ensure that the control of the blowing solenoid valve is more stable and the overall work efficiency is guaranteed. Among them, the intermediate relay includes a coil. When the coil of the intermediate relay is in the energized state, the blowing solenoid valve can be turned on; when the coil of the intermediate relay is in the de-energized state, the blowing solenoid valve can be turned off. Therefore, the control module in the control system realizes indirect control of the blowing solenoid valve by controlling the energized and de-energized states of the coil of the intermediate relay.

[0064] Specifically, after receiving the first control signal provided by the signal input terminal, the control module controls the coil of the intermediate relay to adjust power on and power off.

[0065] S120, at the first moment, the control coil loses power and controls the injection solenoid valve to be turned off.

[0066] S130, at the first moment, the control coil loses power and controls the injection solenoid valve to be turned off.

[0067] Specifically, at the first moment, the control module controls the coil to lose power, and the coil loses power and controls the spray solenoid valve to be turned off, and the spray solenoid valve is turned off and does not spray the separator; at the second moment, the control module controls the coil to be energized, and the coil is energized to control the spray solenoid valve to be turned on, and the spray solenoid valve is turned on to spray the separator. Among them, the first moment and the second moment are adjacent, so it can be understood that the control module controls the spray solenoid valve to be in different states at two adjacent moments. Further, the first moment and the second moment are adjacent and arranged alternately, for example, the first moment, the second moment, the first moment, the second moment... Such alternating arrangement realizes intermittent control of the spray solenoid valve. Optionally, wherein the first moment is T1, T1 can satisfy: 200s≤T1≤400s, for example, T1 can be 200s, 300s, 350s or 400s, and the specific time length of T1 can be adaptively adjusted according to actual needs. The second time may be T2, where T2 satisfies: 1s≤T1≤5s. For example, T2 may be 1s, 3s, 4s or 5s. The specific time length of T2 may be adaptively adjusted according to actual needs.

[0068] In summary, an embodiment of the present invention provides an anti-blocking method. At a first moment, the control module controls the coil to lose power, and the coil loses power and controls the blowing solenoid valve to be turned off; at a second moment, the control module controls the coil to be energized, and the coil is energized to control the blowing solenoid valve to be turned on; the first moment is adjacent to the second moment, which can also be understood as the control module, after receiving the first control signal, alternately controls the intermediate relay at the first moment and the second moment, thereby realizing intermittent control of the blowing solenoid valve, which is beneficial to improving the working efficiency of the blowing solenoid valve and can also save labor costs.

[0069] Optional, Figure 5 is a flow chart of a second anti-blocking method provided by an embodiment of the present invention, refer to Figure 5 As shown, anti-blocking also includes:

[0070] S210: Acquire a first control signal.

[0071] S220: Control the delayed on timer to start at the start time of the first moment, and the delayed on timer is turned on after a first preset time.

[0072] S230: Control the disconnection and connection timer to start at the start time of the second moment, and disconnect the disconnection and connection timer after the second preset time.

[0073] Among them, the control module includes a delayed connection timer and a delayed disconnection timer, which can be understood as that the control module adds a delayed connection timer and a delayed disconnection timer when setting the program. Among them, the preset time of the delayed connection timer includes a first preset time, the delayed connection timer is turned on after the first preset time, and the area where the extended connection timer is located after the conduction is equivalent to a passage. The preset time of the delayed disconnection timer includes a second preset time, the delayed disconnection timer is disconnected after the second preset time, and the area where the delayed disconnection timer is located after disconnection is equivalent to a short circuit. By setting the delayed connection timer and the delayed disconnection timer, the control module can realize intermittent control of the intermediate relay, and then realize intermittent control of the injection solenoid valve. Among them, the time length of the first preset time is equal to the time length from the start time to the end time of the first moment, for example, when the time length of the first moment is 300s, the time length of the first preset time is also 300s; the time length of the second preset time is equal to the time length from the start time to the end time of the second moment, for example, when the time length of the second moment is 3s, the time length of the second preset time is also 3s. The specific time length can be adaptively adjusted according to different needs.

[0074] Furthermore, the control module also includes an output module, which is connected to the intermediate relay. When the signal transmitted in the control module is transmitted to the output module through the delay connection timer and the delay disconnection timer, the coil of the intermediate relay is controlled to be energized, thereby controlling the conduction of the spray solenoid valve. Among them, the output module includes a digital output unit, which intermittently adjusts the state of the coil of the intermediate relay to be energized and de-energized through the digital output unit. And the digital output unit can improve the control accuracy of the intermediate relay, thereby ensuring the working stability and accuracy of the control system.

[0075] When the control module receives a signal from the signal input terminal, its program operation can be combined with Figure 3, the first normally open switch 240 is closed, and the signal is transmitted to the delayed connection timer 210 through the first normally closed switch 250. After the first preset time or the first moment, the extended connection timer 210 is closed, and the second normally open switch 260 is closed. The signal controlling the conduction of the intermediate relay 300 can be energized through the output module 230 so that the coil of the intermediate relay 300 is energized, and then the spraying solenoid valve 400 is turned on to achieve spraying. After the second moment, after the delayed disconnection timer 220 meets the second preset time, the delayed disconnection timer 220 is disconnected, and then the signal controlling the conduction of the intermediate relay 300 cannot be transmitted to the intermediate relay 300 through the output module 230, so the coil of the intermediate relay 300 loses power, the spraying solenoid valve 400 is disconnected, and the spraying stops. The process of controlling the spraying solenoid valve 400 to be turned on and the process of controlling the spraying solenoid valve 400 to be turned off can be executed cyclically to achieve intermittent operation of spraying. It should be noted that, for the delay on timer 210, IN refers to the input of the signal, Q refers to the output of the signal, PT refers to the first preset time, and ET refers to the current time; for the delay off timer 220, IN refers to the input of the signal, Q refers to the output of the signal, PT refers to the second preset time, and ET refers to the current time.

[0076] S240, determining whether the second control signal is received; if so, executing S250, if not, executing S220;

[0077] Among them, the signal input end can transmit the second control signal to the control module, and the control module adjusts the spray solenoid valve based on the second control signal. Among them, the second control signal can be understood as a power-off signal, etc. In other words, the control process of the spray solenoid valve is pre-stored in the control module, and the first control signal transmitted by the signal input end is transmitted to the control module as a start instruction, and the control module ends the adjustment of the spray solenoid valve; the second control signal transmitted by the signal input end is transmitted to the control module as a termination instruction, and the control module ends the adjustment of the spray solenoid valve. Specifically, if the control module receives the second control signal, it proves that the spray solenoid valve does not need to be adjusted at present, or it is understood that the current setting needs to be powered off, etc., then S250 is executed; if the control module does not receive the second control signal, it proves that the spray solenoid valve still needs to be adjusted at present, then S220 is executed to realize intermittent control of the spray solenoid valve.

[0078] S250, control the intermediate relay to reset.

[0079] Specifically, when the control module receives the second control signal, the control intermediate relay is restored to the initial state, and its initial state can be understood as the state before the control module receives the first control signal to adjust the intermediate relay. Optionally, the control intermediate relay reset includes controlling the delay connection timer and the delay disconnection timer to reset. Among them, when the second control signal is received, the delay connection timer and the delay disconnection timer in the control module are reset to the initial state, which can ensure the reliability of operation when the subsequent injection solenoid valve is adjusted. Optionally, the control module can also receive a third control signal. When the control module receives the third control signal, the control intermediate relay is restored to the initial state, and its initial state can be understood as the state before the control module receives the first control signal to adjust the intermediate relay; at the same time, the intermediate relay, the control delay connection timer and the delay disconnection timer are reset. The second control signal can be understood as the relevant instructions for powering off the equipment, and the third control signal can be understood as the relevant instructions when the equipment is abnormal, such as the alarm instructions when the intermediate relay, the control delay connection timer or the delay disconnection timer are abnormal, etc., so that it can better prevent blockage and save manpower.

[0080] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A control system for a solenoid valve, characterized in that: The control system comprises: a signal input terminal, a control module, an intermediate relay and a spray solenoid valve; The signal input end is connected to the input end of the control module, the output end of the control module is connected to the input end of the intermediate relay, and the output end of the intermediate relay is connected to the spray solenoid valve; The first control signal of the signal input terminal is transmitted to the control module, and the control module adjusts the state of the coil of the intermediate relay according to the first control signal; the state of the coil further adjusts the on or off of the spray solenoid valve; Among them, at the first moment, the control module controls the coil to lose power, and the coil loses power and controls the blowing solenoid valve to be turned off; at the second moment, the control module controls the coil to be energized, and the coil is energized to control the blowing solenoid valve to be turned on; the first moment is adjacent to the second moment.

2. The control system according to claim 1, characterized in that: The control module includes a programmable logic controller.

3. The control system according to claim 2, characterized in that: The control module includes a delayed on timer and a delayed off timer; The preset time of the delay-on timer includes a first preset time, and the delay-on timer is turned on after the first preset time; The preset time of the delay disconnection timer includes a second preset time, and the delay disconnection timer is disconnected after the second preset time; The time length of the first preset time is equal to the time length from the start time to the end time of the first moment, and the time length of the second preset time is equal to the time length from the start time to the end time of the second moment.

4. The control system according to claim 2, characterized in that: The control module includes an output module, and the output module is connected to the intermediate relay; The output module includes a digital output unit.

5. The control system according to claim 1, characterized in that: The first time is T1, and the second time is T2, which satisfies: 200s≤T1≤400s, 1s≤T2≤5s.

6. An anti-blocking device, characterized in that: A control system comprising any one of claims 1 to 5; Also included: separator and duct; The first end of the separator is connected to the air duct; the second end of the separator is provided with the spray solenoid valve.

7. An anti-blocking method, characterized in that: The anti-blocking device according to claim 6; the anti-blocking device includes a control system, the control system includes: a signal input end, a control module, an intermediate relay and a spray solenoid valve; the signal input end is connected to the input end of the control module, the output end of the control module is connected to the input end of the intermediate relay, and the output end of the intermediate relay is connected to the spray solenoid valve; the anti-blocking method includes: Acquire the first control signal; adjust the state of the coil of the intermediate relay according to the first control signal, and then adjust the spray solenoid valve to be turned on or off; At the first moment, the coil is controlled to lose power and the spray solenoid valve is controlled to be turned off; the spray solenoid valve is turned off and does not spray the separator; At the second moment, the coil is controlled to be energized and the spray solenoid valve is controlled to be turned on; the spray solenoid valve is turned on to spray the separator; wherein the first moment is adjacent to the second moment.

8. The anti-clogging method according to claim 7, characterized in that: After controlling the coil to be energized and controlling the spray solenoid valve to be turned on, the method further includes: determining whether a second control signal is received; If the second control signal is received, then at the first moment, the coil is controlled to lose power and the spray solenoid valve is controlled to be turned off; If the second control signal is not received, the intermediate relay is controlled to reset.

9. The anti-blocking method according to claim 8, characterized in that: The control module includes a delayed on timer and a delayed off timer; the preset time of the delayed on timer includes a first preset time, and the delayed on timer is turned on after the first preset time; the preset time of the delayed off timer includes a second preset time, and the delayed off timer is turned off after the second preset time; the time length of the first preset time is equal to the time length from the start time to the end time of the first moment, and the time length of the second preset time is equal to the time length from the start time to the end time of the second moment; At the first moment, controlling the coil to lose power and controlling the spray solenoid valve to shut down includes: Controlling the delay-on timer to start at the start time of the first moment, and the delay-on timer to be turned on after the first preset time; At the second moment, controlling the coil to be energized and controlling the spray solenoid valve to be turned on includes: The on-off timer is controlled to start at the start time of the second time, and the on-off timer is disconnected after the second preset time.

10. The anti-clogging method according to claim 9, characterized in that: If the second control signal is not received, controlling the intermediate relay to reset includes: Control the reset of the delay-on timer and the delay-off timer.

Images