CN221008115U - Colliery is with cooling water automatic control system - Google Patents

Abstract

The utility model provides an automatic control system for cooling water for a coal mine, which comprises a controller, a timer, a first passage and a second passage, wherein the first passage enables cooling water to pass through an internal cooling pipe of a motor, the second passage enables cooling water to pass through an internal cooling pipe of a speed reducer, an electric ball valve for controlling the on-off of a waterway is arranged on the first passage, a water inlet of the first passage is connected with a water source, a water outlet of the first passage is connected with a water inlet of the second passage through a serial water pipe, a water outlet of the second passage is connected to a waste water collecting tank, the controller is respectively and electrically connected with the electric ball valve, the timer, a motor switch and a speed reducer switch, and the controller controls the start and stop of the cooling water and the start and stop of the motor through time sequences.

Description

Colliery is with cooling water automatic control system

Technical Field

The utility model belongs to the technical field of speed reducers, and particularly relates to an automatic control system for cooling water for a coal mine.

Background

Along with the modernization and large-scale construction of coal mine enterprises, underground equipment, particularly a scraper machine, has larger and longer running time, and a motor and a speed reducer for the scraper machine are limited by space, so that the structure is very compact, the heat dissipation condition is poor, the motor and the speed reducer are always operated under full load in the running process, and the heat dissipation quantity is high, so that a cooling system is an indispensable component part, and cooling water is required to cool gears or coils in the motor and the speed reducer, thereby preventing the power part from being overloaded due to overhigh temperature and causing equipment damage. The cooling water control system is manual, the manual cooling water control mode inputs too much staff and too long time, the staff is required to reach different host positions, the control valve of the cooling water is opened according to the position, and then the host is opened to start working. When the valve is closed manually after stopping, time is wasted, and unnecessary hidden danger is caused by the fact that a worker cannot open and close the valve in time. In view of the importance of cooling the motor reduction gearbox, it is necessary to replace manual start-stop mode with automation.

Chinese utility model CN205978389U discloses an automatic control device for cooling water of motor reduction gearbox. The intelligent power supply control system comprises an electric ball valve and a ball valve control unit, wherein the electric ball valve is arranged on a cooling water pipeline of a motor reduction gearbox, a control line of the electric ball valve is connected with a non-intrinsic safety power supply module through a contact of a relay J, and the relay J is integrally connected with a power supply output end of the intrinsic safety power supply module after being connected with a control contact K1 of a remote control substation in series. The electric ball valve is an electric ball valve with the model of DFB-20/80, the non-intrinsic safety power supply module and the intrinsic safety power supply module are the 12V direct current power supply module in a KDJ-127/3-4 type remote control box, and the remote control substation is a KJS101-4 intrinsic safety type input/output control device. Four motor reduction boxes of the conveyor head and the conveyor tail are respectively provided with an electric ball valve, each electric ball valve adopts a two-wire control mode, each electric ball valve is connected with a corresponding relay, and all relay coils are connected in parallel. The electric ball valve directly controls the circulation condition of cooling water, so that the linkage control of the cooling water of the speed reduction box of the working face conveyor and the conveyor is realized, and when the conveyor is started, the cooling water stop valve can be opened timely and normally to ensure that the cooling water flows through the speed reduction box; when the conveyor is stopped, the cooling water switch can be timely and normally closed, so that the cooling water is timely stopped, the cooling water and the conveyor are simultaneously started and stopped, the cooling efficiency is low, and the cooling effect on the speed reducer in practical application is not ideal.

Disclosure of Invention

The utility model solves the technical problems that the cooling efficiency of the existing underground speed reducer cooling water control system is low and the cooling effect is not ideal.

The utility model provides an automatic control system for cooling water for a coal mine, which is arranged at a motor and a speed reducer of a scraper machine and comprises a controller, a timer, a first passage and a second passage, wherein the first passage enables cooling water to pass through an internal cooling pipe of the motor, the second passage enables the cooling water to pass through an internal cooling pipe of the speed reducer, an electric ball valve for controlling the on-off of a waterway is arranged on the first passage, a water inlet of the first passage is connected with a water source, a water outlet of the first passage is connected with a water inlet of the second passage through a serial water pipe, a water outlet of the second passage is connected to a waste water collecting tank, the controller is respectively and electrically connected with the electric ball valve, the timer, a switch of the motor and a switch of the speed reducer, the controller is started and stopped by time sequence, the speed reducer is started and stopped by controlling the electric ball valve to be started after the controller receives a starting command, the electric ball valve is started after the controller controls the motor and the speed reducer to be started, and the electric ball valve is controlled to be closed after the controller is started for a set time T3.

Further, the controller is provided with a touch type man-machine interface for setting the time T1, T2 and T3.

Further, the controller is also provided with an electric ball valve manual start-stop button, a motor manual start-stop button and a speed reducer manual start-stop button.

Further, the device also comprises a filter and a water pump, and the filter and the water pump are sequentially connected to the first passage.

Further, the timer and the controller are integrated into a timing controller.

Further, the time sequence controller is a PLC controller.

The utility model has the following beneficial effects: before the conveyor is started, the cooling water is normally started and passes through the motor and the speed reducer and works for a period of time, so that the motor and the speed reducer are prevented from being started and overheated, and the conveyor is protected and stopped due to overload; when the conveyer is shut down, the cooling water switch can continue to circulate for a period of time, and the motor and the speed reducer are automatically stopped after being cooled, so that the situation that injury is caused by mistaken collision of workers after the scraper is shut down is avoided, meanwhile, accurate water use and water resource saving are realized, automatic control of cooling water is realized, personnel investment is reduced, and multi-point automatic control of cooling water can be performed. The automatic valve opening and closing mode is adopted to replace the original manual valve opening and closing mode, automatic control of cooling water of the motor reduction gearbox is realized, the performance is reliable, electromechanical accidents caused by mechanical faults can be avoided, and equipment hidden danger caused by personnel negligence is avoided.

Drawings

FIG. 1 is a schematic diagram of an automatic control system for cooling water for coal mines.

FIG. 2 is a timing chart of the automatic control system for the cooling water for the coal mine.

Detailed Description

In order to clearly illustrate the technical characteristics of the present solution, the present solution is described below by means of specific embodiments and with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, shall fall within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1, the automatic control system for cooling water for coal mine is installed at a motor 4 and a speed reducer 5 of a scraper machine and comprises a controller 1, a timer 2, a first passage and a second passage. The first passageway makes the cooling water pass through the inside cooling tube of motor 4, and the second passageway makes the cooling water pass through the inside cooling tube of reduction gear 5, and first passageway water inlet end is equipped with water pump 8, filter 7, the electronic ball valve 6 of control water route break-make in proper order, and first passageway water inlet is connected with water source 9, and first passageway delivery port passes through series connection water piping connection with second passageway water inlet, and the second passageway delivery port is connected with waste water collecting tank 3. The controller 1 is respectively and electrically connected with the electric ball valve 6, the timer 1, the switch of the motor 4 and the switch of the speed reducer 5, and the controller 1 is provided with a touch type man-machine interface for setting the time T1, T2 and T3. The controller 1 is also provided with a manual start-stop button of the electric ball valve 6, a manual start-stop button of the motor 4 and a manual start-stop button of the speed reducer 5.

As shown in fig. 2, the controller 1 controls the start and stop of the cooling water and the start and stop of the motor 4 through time sequence, and the speed reducer 5 starts and stops, when the controller 1 receives a start command, the controller controls the electric ball valve 6 to be opened, after the electric ball valve 6 is opened for a period of time T1, the controller controls the motor 4 and the speed reducer 5 to be opened, when the motor 4 and the speed reducer 5 run for a set time T2, the controller 1 controls the motor 4 and the speed reducer 5 to be closed, and after waiting for a period of time T3, the controller 1 controls the electric ball valve 6 to be closed.

In this embodiment, the timer 2 and the controller 1 are integrated in a timing controller, which is a PLC controller. Setting a human-computer interface of a PLC touch screen: the cooling water pre-running time T1, the motor and speed reducer running time T2, the waiting time T3 after the motor and speed reducer stop running, the automatic control is started, and the electric ball valve 6, the motor 4 and the speed reducer 5 automatically run according to the time sequence.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (6)

1. The utility model provides a colliery is with cooling water automatic control system, installs in the motor and the reduction gear department of scraper machine, its characterized in that includes controller, time-recorder, first passageway, second passageway, first passageway makes the cooling water pass through the inside cooling tube of motor, the second passageway makes the cooling water pass through the inside cooling tube of reduction gear, be equipped with the electric ball valve of control water route break-make on the first passageway, first passageway water inlet is connected with the water source, first passageway delivery port and second passageway water inlet pass through serial-connection water piping connection, second passageway delivery port is connected to the waste water collecting tank, the controller is used for opening and stopping with electric ball valve, time-recorder, the switch of motor, the switch electric connection of reduction gear respectively, the controller is used for opening and stopping through time sequence control cooling water, motor, the reduction gear is opened and is stopped, the controller is used for receiving the start-up instruction and control electric ball valve is opened, the controller is used for controlling motor and reduction gear to open after electric ball valve is opened for a period of time T1, the controller is used for motor and reduction gear operation to control motor and reduction gear to close after control electric ball valve is used for waiting for a period of time T3 to control to close.

2. The automatic control system for cooling water for coal mine according to claim 1, wherein the controller is provided with a touch type man-machine interface for setting the time T1, T2, T3.

3. The automatic control system for cooling water for coal mine according to claim 1, wherein the controller is further provided with an electric ball valve manual start-stop button, a motor manual start-stop button and a speed reducer manual start-stop button.

4. The automatic control system for cooling water for coal mine as claimed in claim 1, further comprising a filter and a water pump, which are sequentially connected to the first passage.

5. The automatic control system for cooling water for coal mine as claimed in claim 1, wherein the timer and the controller are integrated into a timing controller.

6. The automatic control system for cooling water for coal mine as claimed in claim 5, wherein the timing controller is a PLC controller.