Control structure of electromagnetic pulse valve

Abstract

The present invention discloses a control structure of an electromagnetic pulse valve, including an air distribution box, a plurality of electromagnetic pulse valves are arranged on the air distribution box, one end of the air distribution box is arranged at an air inlet connected to an air supply device, a plurality of junction boxes are fixed on the air distribution box, and the plurality of junction boxes are connected in series through power signal lines respectively, the power signal line includes a signal line and a power line, the power signal line connected to the junction box near the other end of the air distribution box passes through the other end of the air distribution box, and the signal line connected from the other end of the air distribution box is connected to a pulse injection controller; each electromagnetic pulse valve is connected to a junction box through a wire. The present invention adds a junction box between the pulse injection controller and the electromagnetic pulse valve, and the pulse injection controller sends out a coded instruction, which is identified by a microprocessor in the junction box, and after being confirmed as a local electromagnetic pulse valve, an electronic switch is triggered to make the electromagnetic pulse valve spray, thereby simplifying the installation workload, reducing costs, and facilitating remote control.

Description

Technical Field

[0001] The invention relates to a control structure of an electromagnetic pulse valve, in particular to a control structure between a pulse jet controller and an electromagnetic pulse valve in a pulse jet bag dust collector, belonging to the technical field of pulse bag dust collectors. Background Art

[0002] The pulse bag filter can achieve ultra-low emission of particulate matter and effectively control fine dust particles that affect air quality and human health. It is an important equipment for saving emissions and reducing air pollution. The dust removal air source generating device of the pulse jet bag filter consists of a pulse jet controller, an electromagnetic pulse valve 2, an air distribution box 3 and a jet pipe 11. Figure 1 As shown. The pulse jet controller outputs an electrical signal to control the electromagnetic pulse valve 2 to output gas, and the gas passes through the gas distribution box 3, the jet pipe 11, and the nozzle 12 in sequence, and the compressed gas is sprayed to the filter bag 10 in the dust collector box 13 to peel off the dust accumulated on the dust-facing surface of the filter bag 10, so that the dust collector resistance operates within the set range; wherein, the dust collector box 13 and the jet pipe 11 are connected by a box wall connector 14.

[0003] The prior art electromagnetic pulse valve 2 is directly connected to the pulse jet controller 1 by wires, and the connecting wires are long and numerous, such as Figure 2 As shown. Each electromagnetic pulse valve 2 has two power lines 4 (including a common line). If a group of gas boxes (gas bags) are equipped with 20 electromagnetic pulse valves 2, there are 21 connecting wires. When the distance between the pulse jet controller 1 and the electromagnetic pulse valve 2 is 100m, the wire used is 2.1km. In fact, the actual group of gas boxes 3 ( Figure 2 The right end of the center air box 3 is the air inlet 7) and may be equipped with more than 20 electromagnetic pulse valves 2 and a distance of more than 100m. The resistance of the wire itself in the prior art often affects the power supply voltage, and the installation workload is large, the cost is high, and it also brings difficulties to on-site maintenance and troubleshooting. Since the length of the connecting wire between each electromagnetic pulse valve and the pulse injection controller is different, it is more difficult to install and use when the electromagnetic pulse valve needs to be equipped with an explosion-proof coil. Summary of the invention

[0004] The technical problem to be solved by the present invention is: how to avoid the influence of the resistance of the wire itself on the power supply voltage, reduce the installation workload, reduce costs, reduce the difficulty of on-site maintenance and troubleshooting, and reduce the difficulty of installation and use of electromagnetic pulse valves equipped with explosion-proof coils.

[0005] In order to solve the above technical problems, the technical solution of the present invention is to provide a control structure of an electromagnetic pulse valve, including an air distribution box, on which a plurality of electromagnetic pulse valves are arranged, and a pulse spray controller for controlling the switches of all the electromagnetic pulse valves on the air distribution box is arranged on the outer side of the air distribution box, and one end of the air distribution box is arranged at an air inlet connected to an air supply device, and is characterized in that a plurality of junction boxes are fixed on the air distribution box, and the plurality of junction boxes are respectively connected in series through power signal lines, and the power signal line includes a signal line and a power line, and the power signal line connected to the junction box near the other end of the air distribution box passes through the other end of the air distribution box, and the signal line connected from the other end of the air distribution box is connected to the pulse spray controller; each electromagnetic pulse valve is connected to a junction box through a wire.

[0006] Preferably, the length of the wire connecting each electromagnetic pulse valve and its corresponding junction box is no more than 1 m.

[0007] Preferably, the length of the wire connecting each electromagnetic pulse valve and its corresponding junction box is the same.

[0008] Preferably, each of the electromagnetic pulse valves is arranged directly above the corresponding junction box.

[0009] Preferably, an electric contact pressure gauge is provided on the gas distribution box, and an electromagnetic stop valve for closing the air inlet is provided between the air inlet and the gas distribution box; the electric contact pressure gauge and the electromagnetic stop valve are both connected to the pulse jet controller.

[0010] Preferably, when the electromagnetic pulse valve is spraying, when the pressure in the gas distribution box drops to a set value, the electric contact pressure gauge closes the contact to judge that the electromagnetic pulse valve can be opened normally; if the pressure in the gas distribution box does not drop and the contact of the electric contact pressure gauge does not close, it is judged that the electromagnetic pulse valve is not opened normally, and the pulse spray controller sends out a fault alarm;

[0011] When the electromagnetic pulse valve is closed, the pressure in the air distribution box returns to normal, and the contacts of the electric contact pressure gauge are disconnected, indicating that the electromagnetic pulse valve can be closed normally; if the pressure in the air distribution box cannot be restored within the set time, and the contacts of the electric contact pressure gauge are not disconnected, indicating that the electromagnetic pulse valve is not closed normally, the pulse injection controller issues a fault alarm, and closes the air inlet through the electromagnetic stop valve.

[0012] Preferably, when the pulse jet controller sends a command signal to the junction box through the signal line, the electromagnetic pulse valve is energized through the junction box.

[0013] Preferably, a power line connected from the other end of the gas distribution box is connected to a pulse jet controller or a power supply, and the power supply is arranged on one side of the gas distribution box.

[0014] Preferably, a sheath tube is provided on each of the power signal lines connecting a plurality of the junction boxes in series.

[0015] Preferably, each of the air supply devices is connected to at least one air distribution box; and each pulse jet controller is connected to at least one air distribution box.

[0016] Preferably, an electronic switch and a microprocessor are provided in the junction box, the electronic switch and the microprocessor are connected, the signal line connected to the pulse jet controller is connected to the microprocessor, the power line connected to the pulse jet controller is connected to the electronic switch, and the electronic switch is connected to the coil of the electromagnetic pulse valve through the power line.

[0017] The present invention adds a junction box between the pulse jet controller and the electromagnetic pulse valve. The pulse jet controller sends out a coded instruction, which is recognized by the microprocessor in the junction box. After confirming that it is the local electromagnetic pulse valve, the electronic switch is triggered to make the electromagnetic pulse valve spray. This greatly simplifies the installation workload, reduces costs, and is conducive to realizing remote control, thereby improving the control level of the pulse jet bag dust collector.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] ①Reduce the voltage loss caused by the resistance of the connecting wire between the pulse jet controller and the electromagnetic pulse valve. ②Reduce the installation cost and workload. ③It is conducive to the remote control of the electromagnetic pulse valve. ④It can timely reflect the working status of the electromagnetic pulse valve, and can timely alarm and take corresponding measures for faults, thereby improving the equipment level of the pulse jet bag dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of a pulse jet bag filter;

[0021] Figure 2 It is a wire connection diagram of the electromagnetic pulse valve and the pulse jet controller in the prior art;

[0022] Figure 3 A schematic diagram of a control structure of an electromagnetic pulse valve (I);

[0023] Figure 4 A schematic diagram of a control structure of an electromagnetic pulse valve (II);

[0024] Figure 5 This is the control block diagram in the junction box;

[0025] Figure 6 This is the appearance diagram of the junction box;

[0026] Figure 7 for Figure 6 Left view of . DETAILED DESCRIPTION

[0027] In order to make the present invention more clearly understood, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] The present invention provides a control structure of an electromagnetic pulse valve, such as Figure 3 As shown, it includes a pulse jet controller 1, an electromagnetic pulse valve 2, and an air distribution box 3. The outer side of the air distribution box 3 is provided with a pulse jet controller 1 for controlling the switch of all electromagnetic pulse valves 2 on the air distribution box 3. Each air distribution box 3 is provided with multiple electromagnetic pulse valves 2. Each air distribution box 3 is connected to at least one air distribution box 3. Each pulse jet controller 1 is connected to at least one air distribution box 3. A certain number of air supply devices and pulse jet controllers 1 are provided according to on-site requirements. A junction box 6 is added between the pulse jet controller 1 and each electromagnetic pulse valve 2. Multiple junction boxes 6 are connected in series through power signal lines, and the power signal lines of multiple junction boxes 6 connected in series are provided with sheath tubes 8 to protect the power signal lines and avoid damage. One end of the air distribution box 3 is provided at the air inlet 7 connected to the air supply device, and the power signal line connected to the junction box 6 near the other end of the air distribution box 3 passes through the other end of the air distribution box 3. The power signal line includes a signal line 41 and a power line 4. The signal line 41 connected from the other end of the gas distribution box 3 is connected to the pulse injection controller 1. Each electromagnetic pulse valve 2 is connected to a junction box 6 through a wire.

[0030] All junction boxes 6 are fixed on the gas distribution box 3, so that each electromagnetic pulse valve 2 is connected to its corresponding junction box 6. The wire connecting each electromagnetic pulse valve 2 and its corresponding junction box 6 will not exceed 1m, or even shorter. And the length of the wire connecting each electromagnetic pulse valve 2 and the junction box 6 can be kept consistent. The pulse spray controller 1 sends out a coded instruction, which is recognized by the microprocessor 66 in the junction box 6. It is confirmed that the local electromagnetic pulse valve 2 is spraying, that is, the electronic switch 65 is triggered to make the electromagnetic pulse valve 2 spray, such as Figure 5 The pulse jet controller 1 outputs two power lines 4 and two data control lines (signal lines 41), which greatly simplifies the installation workload, reduces costs, and is conducive to remote control.

[0031] An electric contact pressure gauge 5 is provided on the gas distribution box 3, and an electromagnetic stop valve 9 for closing the gas inlet 7 is provided between the gas inlet 7 and the gas distribution box 3; the electric contact pressure gauge 5 and the electromagnetic stop valve 9 are both connected to the pulse injection controller 1.

[0032] like Figure 5As shown, the junction box 6 is provided with an electronic switch 65 and a microprocessor 66, the electronic switch 65 and the microprocessor 66 are connected, the signal line 41 connected to the pulse jet controller 1 is connected to the microprocessor 66, the power line 4 connected to the pulse jet controller 1 is connected to the electronic switch 65, and the electronic switch 65 is connected to the coil of the electromagnetic pulse valve 2 through the power line 4. Figure 6 As shown, the junction box 6 includes a junction box body 62 , which is fixedly connected to a junction box cover 63 by screws 61 , and sealing joints 64 are provided around the junction box body 62 .

[0033] When the electromagnetic pulse valve 2 receives the instruction to spray, the pressure in the air distribution box 3 will drop by 1 / 3 to 2 / 3. After the electromagnetic pulse valve 2 is closed, the pressure in the air distribution box 3 will recover within a few seconds. The present invention sets an electric contact pressure gauge 5 on the air distribution box 3. When the electromagnetic pulse valve 2 is spraying, when the pressure in the air distribution box 3 drops to the set value, the electric contact pressure gauge 5 closes the contacts to determine whether the electromagnetic pulse valve 2 can be opened normally. If the pressure in the air distribution box 3 does not drop and the contacts of the electric contact pressure gauge 5 do not close, it means that the electromagnetic pulse valve 2 is not opened normally. At this time, the pulse spray controller 1 will issue a fault alarm. When the electromagnetic pulse valve 2 is closed, the pressure in the air distribution box 3 returns to normal, and the contacts of the electric contact pressure gauge 5 will be disconnected. Determine whether the electromagnetic pulse valve 2 can be closed normally. If the pressure in the gas distribution box 3 cannot be restored within the set time and the contacts of the electric contact pressure gauge 5 will not be disconnected, it means that the electromagnetic pulse valve 2 cannot be closed normally. The pulse injection controller 1 will issue an electromagnetic pulse valve 2 fault alarm, and cut off the gas source through the electromagnetic stop valve 9, stopping the gas from entering the gas distribution box 3 from the air inlet 7, so as to ensure the gas source pressure of other gas distribution boxes 3 and work normally.

[0034] Example 2

[0035] In this embodiment, in order to reduce the voltage drop caused by the wire resistance, the power supply 15 of the electromagnetic pulse valve 2 can be set on site when necessary, and the power supply 15 is connected to two power lines 4 connected from one end of the gas distribution box 3, such as Figure 4 The pulse jet controller 1 is arranged in the centralized control room and only needs two output data control lines (i.e., signal lines 41). Its installation is more convenient and reasonable.

[0036] The rest is the same as Example 1.

Claims

1. A control structure for an electromagnetic pulse valve, comprising an air distribution box (3), on which a plurality of electromagnetic pulse valves (2) are arranged, and on the outer side of the air distribution box (3) is a pulse jet controller (1) for controlling the switching of all the electromagnetic pulse valves (2) on the air distribution box (3), one end of the air distribution box (3) is arranged at an air inlet (7) connected to an air supply device, characterized in that: A plurality of junction boxes (6) are fixed on the gas distribution box (3), and the plurality of junction boxes (6) are connected in series via power signal lines, the power signal lines comprising a signal line (41) and a power line (4), the power signal line connected to the junction box (6) near the other end of the gas distribution box (3) passes through the other end of the gas distribution box (3), and the signal line (41) connected from the other end of the gas distribution box (3) is connected to the pulse injection controller (1); each electromagnetic pulse valve (2) is connected to a junction box (6) via a wire; an electronic switch (65) and a microprocessor (66) are provided in the junction box (6), the electronic switch (65) and the microprocessor (66) are connected, the signal line (41) connected to the pulse injection controller (1) is connected to the microprocessor (66), the power line (4) connected to the pulse injection controller (1) is connected to the electronic switch (65), and the electronic switch (65) is connected to the coil of the electromagnetic pulse valve (2) via the power line (4); The length of the wire connecting each electromagnetic pulse valve (2) and its corresponding junction box (6) is the same; The pulse spraying controller (1) sends out a coded instruction, which is recognized by the microprocessor (66) in the junction box (6) and confirmed to be the local electromagnetic pulse valve (2) spraying, thereby triggering the electronic switch (65) to make the electromagnetic pulse valve (2) spray.

2. A control structure of an electromagnetic pulse valve as claimed in claim 1, characterized in that: The length of the wire connecting each electromagnetic pulse valve (2) and its corresponding junction box (6) is no more than 1 m.

3. A control structure of an electromagnetic pulse valve as claimed in claim 2, characterized in that: Each of the electromagnetic pulse valves (2) is arranged directly above the corresponding junction box (6).

4. A control structure for an electromagnetic pulse valve according to any one of claims 1 to 3, characterized in that: An electric contact pressure gauge (5) is provided on the gas distribution box (3), and an electromagnetic stop valve (9) for closing the gas inlet (7) is provided between the gas inlet (7) and the gas distribution box (3); the electric contact pressure gauge (5) and the electromagnetic stop valve (9) are both connected to the pulse jet controller (1).

5. A control structure of an electromagnetic pulse valve as claimed in claim 4, characterized in that: When the electromagnetic pulse valve (2) is spraying, the pressure in the gas distribution box (3) drops to a set value, and the electric contact pressure gauge (5) closes its contacts to judge that the electromagnetic pulse valve (2) can be opened normally; if the pressure in the gas distribution box (3) does not drop and the contacts of the electric contact pressure gauge (5) do not close, it is judged that the electromagnetic pulse valve (2) is not opened normally, and the pulse spray controller (1) issues a fault alarm; When the electromagnetic pulse valve (2) is closed, the pressure in the gas distribution box (3) returns to normal, and the contacts of the electric contact pressure gauge (5) are disconnected, and it is judged that the electromagnetic pulse valve (2) can be closed normally; if the pressure in the gas distribution box (3) cannot be restored within the set time, the contacts of the electric contact pressure gauge (5) are not disconnected, and it is judged that the electromagnetic pulse valve (2) is not closed normally, the pulse injection controller (1) issues a fault alarm, and closes the air inlet (7) through the electromagnetic stop valve (9).

6. The control structure of an electromagnetic pulse valve according to claim 1, characterized in that: When the pulse jet control device (1) sends a command signal to the junction box (6) via the signal line (41), the electromagnetic pulse valve (2) is energized via the junction box (6).

7. A control structure of an electromagnetic pulse valve as claimed in claim 1 or 6, characterized in that: A power line (4) connected from the other end of the gas distribution box (3) is connected to a pulse jet controller (1) or a power supply (15), and the power supply (15) is arranged on one side of the gas distribution box (3).

8. The control structure of an electromagnetic pulse valve according to claim 1, characterized in that: Each of the air supply devices is connected to at least one air distribution box (3); and each of the pulse jet control instruments (1) is connected to at least one air distribution box (3).

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