Dry fog dust suppression wireless control circuit

Abstract

The utility model provides a dry fog dust suppression wireless control circuit, which is characterized in that the input end of a PLC (Programmable Logic Controller) is connected with a direct current 24V positive electrode through a manual control button, the output end of the PLC corresponding to the input end is electrically connected with one end of a primary coil of an intermediate relay, and the other end of the primary coil of the intermediate relay is connected with a direct current 24V negative electrode; two ends of a normally open contact of the intermediate relay are respectively connected to a pair of control ends of the multi-path switching value transmission module, and the single-path switching value transmission module matched with the multi-path switching value transmission module is arranged at a corresponding dust suppression point position; the one-way switching value transmission module is powered by a 24V battery pack, a pin at one end of a switching point of the one-way switching value transmission module is connected with a positive electrode of the 24V battery pack, and a pin at the other end of the switching point is electrically connected with a negative electrode of the 24V battery pack after passing through electrically operated valves which are connected in parallel and respectively control on-off of a water path and an air path. The device is simple in structure and reliable in performance, does not need to lay a large number of cables, saves the cost, improves the construction progress, and facilitates the subsequent repair and maintenance.

Description

Technical Field

[0001] The utility model belongs to the technical field of dry fog dust suppression control, in particular to a dry fog dust suppression wireless control circuit. Background Art

[0002] Dry fog dust suppression technology uses water and air channels to transport water and air, and mixes the two through atomization equipment. It captures dust through "cloudy" water mist, allowing the water mist to combine with dust particles in the air to form agglomerates of dust and water mist, which settle under the action of gravity to achieve dust suppression at the source. It can effectively solve the problem of handling unorganized dust emissions in partially closed / semi-closed states, such as dust removal in loading and unloading areas such as feed hoppers and feeders.

[0003] For large-scale construction sites that need to install dry fog dust suppression devices at multiple dust suppression points, each dust suppression point must have an electric valve to control the on and off of the air and water circuits respectively. If all cables are used for connection and control, not only will the construction be cumbersome and the cost increased, but maintenance will also be more troublesome. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a dry fog dust suppression wireless control circuit, specifically:

[0005] In the dry fog dust suppression wireless control circuit, the input end of the PLC controller is connected to the DC 24V positive pole via the manual control button, the output end of the PLC control corresponding to the input end is electrically connected to one end of the primary coil of the intermediate relay, and the other end of the primary coil of the intermediate relay is connected to the DC 24V negative pole;

[0006] The two ends of the normally open contact of the intermediate relay are respectively connected to a pair of control ends of the multi-channel switch quantity transmission module, and a single-channel switch quantity transmission module matching the multi-channel switch quantity transmission module is arranged at the corresponding dust suppression point; the single-channel switch quantity transmission module is powered by a 24V battery pack, and one end pin of its switch point is connected to the positive pole of the 24V battery pack, and the other end pin of the switch point is electrically connected to the negative pole of the 24V battery pack after passing through the electric valves connected in parallel that respectively control the on and off of the water and gas circuits.

[0007] Furthermore, the model of the PLC controller is Siemens 6ES7 288-1ST40-0AA1.

[0008] Furthermore, the multi-channel switch quantity transmission module adopts a four-channel switch quantity transmission module of model LC404, and the corresponding controlled single-channel switch quantity transmission module model is LC101.

[0009] Furthermore, the multi-channel switch quantity transmission module adopts a two-channel switch quantity transmission module of model LC202, and the corresponding single-channel switch quantity transmission module model controlled by it is LC101.

[0010] Further, the PLC controller is powered by a 24V DC power supply.

[0011] Furthermore, the 24V battery pack for powering the single-channel switch quantity transmission module is composed of dry batteries or rechargeable batteries.

[0012] The utility model has a simple structure and reliable performance, does not need to lay a large number of cables, saves costs, improves construction progress, and facilitates subsequent inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention. A person of ordinary skill in the art can obtain other relevant drawings based on these drawings without making any creative effort.

[0014] Figure 1 It is a schematic diagram of the circuit structure of the utility model. DETAILED DESCRIPTION

[0015] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0016] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0017] This embodiment takes the wireless control of a dust suppression point as an example, such as the wireless control of the spray start and stop at the dust suppression point of the stacking arm and the material guide trough. The wireless control structure of other dust suppression points is basically the same as that of this embodiment. It only needs to adjust and select the corresponding input end and output end, and increase the corresponding multi-channel switch transmission module and single-channel switch transmission module according to the quantity requirements.

[0018] like Figure 1 As shown, the PLC controller is powered by a 24V DC power supply, an input terminal I2.0 of the PLC controller is connected to the DC 24V positive electrode (24V+) via a manual control button SB11, an output terminal Q1.1 of the PLC controller corresponding to the input terminal is electrically connected to one end of the primary coil of an intermediate relay KA14, and the other end of the primary coil of the intermediate relay KA14 is connected to the DC 24V negative electrode (24V-);

[0019] The normally open contacts, i.e., the two ends of the output of the intermediate relay KA14 are respectively connected to a pair of control ends (DI-1 and COM1) of a multi-channel switch quantity transmission module U1. A single-channel switch quantity transmission module U2 matching the multi-channel switch quantity transmission module U1 is arranged at the dust suppression point of the stacking arm and the guide trough. The single-channel switch quantity transmission module U2 is powered by a 24V battery pack. One end pin (NO pin) of the switch point of the single-channel switch quantity transmission module U2 is connected to the positive electrode of the 24V battery pack, and the other end pin (COM pin) of the switch point is electrically connected to the negative electrode of the 24V battery pack through parallel electric valves (DC5, DC6) that respectively control the on and off of the water circuit and the gas circuit.

[0020] The model of the PLC controller is Siemens 6ES7 288-1ST40-0AA1, which has multiple input terminals and multiple output terminals. According to the input signal collected by an input terminal, a corresponding control signal is output by a corresponding output terminal after being processed by the PLC controller. This embodiment takes the input terminal I2.0 and the corresponding output terminal Q1.1 as an example.

[0021] The multi-channel switch quantity transmission module U1 can adopt a four-channel switch quantity transmission module LC404, which can correspondingly control four single-channel switch quantity transmission modules U2. The model of the single-channel switch quantity transmission module U2 is LC101.

[0022] The multi-channel switch quantity transmission module U1 may also adopt a two-channel switch quantity transmission module LC202, but it can control only two single-channel switch quantity transmission modules U2, and the model of the single-channel switch quantity transmission module U2 is LC101.

[0023] Therefore, the number and model of U1 can be selected according to the actual number of dust suppression points to be controlled in order to save costs as much as possible. For example, if the number of dust suppression points to be controlled is ten, a combination of two LC404s and one LC202 can be used to match and control ten LC101s.

[0024] Working principle: Press the manual control button SB11 to turn it on / off, and the input terminal I2.0 of the PLC controller is connected / disconnected with 24V+, controlling the primary coil of the intermediate relay KA14 connected to the corresponding output terminal Q1.1 to be energized / de-energized, thereby making the contacts of the intermediate relay KA14 close / disconnect, so that a pair of control terminals (DI-1 and COM1) of the multi-channel switch quantity transmission module U1 are connected / disconnected, and the multi-channel switch quantity transmission module U1 sends the corresponding wireless control signal to the single-channel switch quantity transmission module U2 at the corresponding point controlled by the pair of control terminals. After receiving the control signal, the single-channel switch quantity transmission module U2 opens / closes the electric valve DC5 for controlling the on / off of the water circuit and the electric valve DC6 for controlling the on / off of the gas circuit connected to its switch point, thereby starting / stopping the atomization equipment at the dust suppression point.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Dry fog dust suppression wireless control circuit, characterized in that, The input end of the PLC controller is connected to the positive pole of DC 24V via a manual control button, the output end of the PLC control corresponding to the input end is electrically connected to one end of the primary coil of the intermediate relay, and the other end of the primary coil of the intermediate relay is connected to the negative pole of DC 24V; The two ends of the normally open contact of the intermediate relay are respectively connected to a pair of control ends of the multi-channel switch quantity transmission module, and a single-channel switch quantity transmission module matching the multi-channel switch quantity transmission module is arranged at the corresponding dust suppression point; the single-channel switch quantity transmission module is powered by a 24V battery pack, and one end pin of its switch point is connected to the positive pole of the 24V battery pack, and the other end pin of the switch point is electrically connected to the negative pole of the 24V battery pack after passing through the electric valves connected in parallel that respectively control the on and off of the water and gas circuits.

2. The dry fog dust suppression wireless control circuit according to claim 1, characterized in that: The model of the PLC controller is Siemens' 6ES7 288-1ST40-0AA1.

3. The dry fog dust suppression wireless control circuit according to claim 1, characterized in that: The multi-channel switch quantity transmission module adopts a four-channel switch quantity transmission module of model LC404, and the corresponding single-channel switch quantity transmission module of model LC101 is used.

4. The dry fog dust suppression wireless control circuit according to claim 1, characterized in that: The multi-channel switch quantity transmission module adopts a two-channel switch quantity transmission module of model LC202, and the corresponding single-channel switch quantity transmission module model controlled by it is LC101.

5. The dry fog dust suppression wireless control circuit according to claim 1, characterized in that: The PLC controller is powered by a 24V DC power supply.

6. The dry fog dust suppression wireless control circuit according to claim 1, characterized in that: The 24V battery pack for supplying power to the single-channel switch quantity transmission module is composed of dry batteries or rechargeable batteries.

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