CN214429240U

CN214429240U - Water filter control circuit

Info

Publication number: CN214429240U
Application number: CN202120459074.7U
Authority: CN
Inventors: 蒋世银; 卫晓凤; 李国俊; 何燕; 侯晓旺
Original assignee: Jinzhong Development Zone Shengbang Hydraulic Components Co ltd
Current assignee: Jinzhong Development Zone Shengbang Hydraulic Components Co ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-10-19
Anticipated expiration: 2031-03-03

Abstract

The utility model belongs to the technical field of water filters, and discloses a mining flameproof and intrinsically safe water filter control circuit, which comprises a leakage protector, a power supply module, a mainboard, a display module, a pressure sensor, a CAN isolation transceiver module, a communication module, a safety grid module and a relay control module, wherein the leakage protector is arranged between an external alternating current power supply and the input end of the power supply module, the power supply module is used for supplying power to a circuit, the pressure sensor is arranged at each pressure measuring point of the water filter, the signal output end of the pressure sensor is connected with the mainboard, the output end of the mainboard is connected with the display module, the output end of the mainboard is also connected with the input end of the relay control module through the safety grid module, the output end of the relay control module is connected with the control end of the water filter control module, the mainboard is connected with a CAN local area network through the CAN isolation transceiver module, the mainboard passes through communication module and upper computer connection. The utility model discloses can realize the safety control of underground water filter.

Description

Water filter control circuit

Technical Field

The utility model belongs to the technical field of the water filter, concretely relates to mining flame proof and safe type water filter control circuit of essence.

Background

The total inflow water quality of a fully mechanized coal mining face under a coal mine affects the service life of downstream water utilization equipment, so the inflow water quality is often required to be filtered. The precision filter equipment has more mature equipment series with various forms, such as various forms of filter screens, various flow rates, various filter precisions and the like, and is widely applied to various occasions. However, in a specific environment of a working face under a mine, certain special working requirements can be provided due to the limitations of various accuracies, flow rates, spaces and environments. In addition, there are some special requirements for the control circuit of the water filter, such as: the underground control equipment needs to be subjected to explosion-proof treatment, so that the control circuit of the water filter in the prior art needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes the deficiencies in the prior art, the technical problem who solves is: the control circuit of the water filter is provided, so that the water filter can be suitable for complex working conditions under a coal mine.

In order to solve the technical problem, the utility model discloses a technical scheme be: a water filter control circuit comprises a leakage protector, a power supply module, a mainboard, a display module, a pressure sensor, a CAN isolation transceiving module, a communication module, a safety barrier module and a relay control module, the leakage protector is arranged between an external alternating current power supply and the input end of the power supply module, the power supply module is used for supplying power to the circuit, the pressure sensors are arranged at each pressure measuring point of the water filter, the signal output ends of the pressure sensors are connected with the main board, the output end of the main board is connected with the display module, the output end of the main board is also connected with the input end of the relay control module through the safety barrier module, the output end of the relay control module is connected with the control end of the water filter control valve, the mainboard is connected with a CAN local area network through a CAN isolation transceiver module, and the mainboard is connected with an upper computer through a communication module.

The power module comprises a transformer and a switch power supply, the transformer is used for converting an external power supply into a 127V alternating current power supply and then supplying power to the switch power supply and the water filter control valve, and the switch power supply is used for converting the 127V alternating current power supply into a 24V direct current power supply and then supplying power to the safety barrier module, the mainboard and the relay control module.

The communication module comprises one or more of a DTU module, an optical fiber communication module and a network port communication module.

The safety barrier module comprises a plurality of 485 safety barriers.

The water filter control circuit further comprises an intrinsic safety keyboard input module and an optical alarm module, wherein the input end of the mainboard is connected with the intrinsic safety keyboard input module, and the output end of the mainboard is connected with the optical alarm module.

The relay control module comprises a plurality of solid-state relays, and the solid-state relays are used for controlling the starting and stopping of the water filter control valve according to the output signal of the main board.

Compared with the prior art, the utility model following beneficial effect has: the utility model provides a mining flame proof and safe type water filter control circuit of essence, adopt alternating current 660V or 380V or 220V or 127V power supply, through earth-leakage protector, receive the transformer, use the transformer to become alternating current 127V with the voltage and export for switching power supply, switching power supply commutates the 127V of alternating current to direct current 24V and supplies power, adopt the pressure signal of each key position of water filter through pressure sensor, and send to the mainboard, the mainboard collects the pressure and the information of each point on the display screen and send to remote terminal. The mainboard passes through the safety barrier to be connected with each control valve, realizes the control of each valve, consequently, the utility model discloses can guarantee that the intrinsic safety performance of site instrument is inefficacy, improve circuit's security. In addition, the mainboard can carry out analysis processes to the pressure value of each point, and then control valve on the water filter equipment starts and stops, does not reach standard then carries out light alarm through light alarm unit when handling the completion back pressure. In addition, the actuation time of the control valves is adjusted and each valve is controlled individually by means of a keyboard. Therefore, the utility model provides a pair of mining flame proof and safe type water filter control circuit of essence can realize the safety control of underground water filter.

Drawings

Fig. 1 is a schematic circuit block diagram of a control circuit of a water filter according to an embodiment of the present invention;

fig. 2 is a schematic block diagram of a power supply module according to an embodiment of the present invention;

fig. 3 is a schematic circuit diagram of a relay control module according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in figure 1, the embodiment of the utility model provides a mining flame proof and intrinsic safety type water filter control circuit, including earth leakage protector, power module, mainboard, display module, pressure sensor, CAN isolation transceiver module, communication module, safety grid module and relay control module, earth leakage protector sets up between external AC power supply and power module's input, power module is used for supplying power for the circuit, pressure sensor sets up each pressure survey point at the water filter, and pressure sensor evenly distributes on equipment, pressure sensor's signal output part with the mainboard is connected, on it gathers the pressure of each point on the whole equipment of water filter through 4-20ma signal transmission to the mainboard, the output of mainboard with display module connects, the output of mainboard still is connected with relay control module's input through safety grid module, the output end of the relay control module is connected with the control end of the water filter control valve, the mainboard is connected with the CAN local area network through the CAN isolation transceiving module and receives signals of CAN local area network equipment, in addition, the mainboard is connected with the upper computer through the communication module and sends data of the pressure sensor to the upper computer, and meanwhile, the mainboard CAN also receive control signals of the upper computer. In the mining flameproof and intrinsically safe water filter control circuit of the embodiment, the mainboard collects the pressure of each pressure measurement point of the water filter through the pressure sensor and sends the pressure to the display module to display, meanwhile, the mainboard can calculate and judge according to the pressure value of the pressure sensor on the one hand and control the opening and closing of each control valve of the water filter, and also can control each control valve of the water filter according to the control signal sent by the upper computer, and the mainboard can also send the data of the pressure sensor to the upper computer for storage and display through the communication module, so that the remote observation of the field pressure signal is facilitated.

Further, as shown in fig. 2, in this embodiment, the power module includes a transformer and a switching power supply, the transformer is configured to convert an external power supply into a 127V ac power supply and then supply power to the switching power supply and the water filter control valve, and the switching power supply is configured to convert the 127V ac power supply into a 24V dc power supply and then supply power to the safety barrier module, the motherboard, and the relay control module.

Further, as shown in fig. 1, in this embodiment, the communication module includes one or more of a DTU module, an optical fiber communication module, and a network port communication module. The mainboard can be a MCU central processing unit, and the display module adopts a DMT12800K070-A2WTC industrial grade color 7-inch screen for displaying the pressure value and the operation function on the equipment.

Further, as shown in fig. 1, in this embodiment, the safety barrier module includes a plurality of 485 safety barriers. The 485 safety grid realizes the limitation of dangerous signals between the intrinsic safety instrument and the non-intrinsic safety equipment through an internal energy limiting circuit, and ensures that the intrinsic safety performance of the field instrument is not invalid, for example, when the intrinsic safety instrument is short-circuited, the safety grid ensures that the field short-circuit current is not too large to cause danger; if the non-intrinsic safety equipment breaks down, the safety grid can ensure that dangerous voltage and dangerous current cannot be transmitted to the on-site intrinsic safety instrument to cause danger.

Further, as shown in fig. 1, the control circuit for the mining flameproof and intrinsically safe water filter provided by this embodiment further includes an intrinsically safe keyboard input module and an optical alarm module, wherein an input end of the main board is connected with the intrinsically safe keyboard input module, and an output end of the main board is connected with the optical alarm module. The intrinsic safety keyboard input module can be used for operating equipment, modifying the starting time of each control valve and independently controlling the starting and stopping of each valve, when the pressure of the equipment exceeds the limit, the intrinsic safety keyboard input module can give an alarm through the light alarm module, and light is used for prompting personnel nearby the equipment to check the condition of the equipment.

In this embodiment, the power module provides a 127V ac power supply to supply power to the water filter control valve, a control signal of the relay control module is connected to the power supply loop of the water filter control valve, and the water filter control valve is started and closed by a contact switch of the relay control module, so as to control the water filter. Specifically, the relay control module comprises a plurality of circuits shown in fig. 3, wherein J1 is a solid-state relay, Q1 is a triode, D1 is a zener diode, and a normally open contact connected to the solid-state relay is arranged in a power supply loop of the water filter control valve power supply. When mainboard output turn-on signal, signal (PC 1) is sent to relay control module behind the safety barrier, the high level signal that corresponds makes triode Q1 switch on, the coil of corresponding solid state relay J1 gets electric, its normally open contact is closed, the water filter control valve that corresponds gets electric and starts, when mainboard output turn-off signal, the signal sends the solid state relay that corresponds in the relay control module behind the safety barrier, the high level signal that corresponds makes triode Q1 end, the coil of solid state relay J1 loses electricity, its normally open contact disconnection, water filter control valve loses electricity and closes.

To sum up, the utility model provides a mining flame proof and safe type water filter control circuit of essence, adopt alternating current 660V or 380V or 220V or 127V power supply, through earth-leakage protector, receive the transformer on, use the transformer to become alternating current 127V with the voltage and export for switching power supply, switching power supply changes the 127V of alternating current to direct current 24V and supplies power, gather the pressure signal of each key position of water filter through pressure sensor, and send to the mainboard, the mainboard collects pressure and the information of each point on the display screen and send to remote terminal. The mainboard passes through the safety barrier to be connected with each control valve, realizes the control of each valve, consequently, the utility model discloses can guarantee that the intrinsic safety performance of site instrument is inefficacy, improve circuit's security. In addition, the mainboard can carry out analysis processes to the pressure value of each point, and then control valve on the water filter equipment starts and stops, does not reach standard then carries out light alarm through light alarm unit when handling the completion back pressure. In addition, the actuation time of the control valves is adjusted and each valve is controlled individually by means of a keyboard. Therefore, the utility model provides a pair of mining flame proof and safe type water filter control circuit of essence can realize the safety control of underground water filter.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A water filter control circuit is characterized by comprising a leakage protector, a power supply module, a mainboard, a display module, a pressure sensor, a CAN isolation transceiving module, a communication module, a safety barrier module and a relay control module,

the leakage protector sets up between the input of external AC power supply and power module, power module is used for supplying power for the circuit, pressure sensor sets up each pressure survey point at water filter, pressure sensor's signal output part with the mainboard is connected, the output of mainboard with display module connects, the output of mainboard still is connected with relay control module's input through the safety barrier module, relay control module's output and the control end of water filter control valve are connected, the mainboard is kept apart transceiver module through the CAN and is connected with the CAN LAN, the mainboard passes through communication module and upper computer link.

2. The water filter control circuit of claim 1, wherein the power module comprises a transformer and a switching power supply, the transformer is used for converting an external power supply into a 127V alternating current power supply and then supplying power to the switching power supply and the water filter control valve, and the switching power supply is used for converting the 127V alternating current power supply into a 24V direct current power supply and then supplying power to the safety barrier module, the mainboard and the relay control module.

3. The water filter control circuit of claim 1, wherein the communication module comprises one or more of a DTU module, a fiber optic communication module, and a portal communication module.

4. The water filter control circuit as recited in claim 1, wherein the safety barrier module comprises a plurality of 485 safety barriers.

5. The water filter control circuit according to claim 1, further comprising an intrinsically safe keyboard input module and an optical alarm module, wherein an input end of the main board is connected with the intrinsically safe keyboard input module, and an output end of the main board is connected with the optical alarm module.

6. The water filter control circuit of claim 1, wherein the relay control module comprises a plurality of solid state relays for controlling activation and deactivation of the water filter control valve based on an output signal from the motherboard.