Drill jumbo auxiliary water-saving device for deep well mine

Abstract

The drill jumbo auxiliary water-saving device for the deep well mine comprises a water supply valve, a filter is arranged on the side portion of the water supply valve, the filter and the water supply valve are communicated through a water supply hose, a pressure reducing valve is arranged on the side portion of the filter, the filter and the pressure reducing valve are communicated through a galvanized steel pipe, and a pressure gauge is arranged on the galvanized steel pipe. An electromagnetic valve and a flow control valve which are arranged in parallel are arranged on the side portion of the pressure reducing valve, the pressure reducing valve is communicated with the electromagnetic valve through a pipeline, the flow control valve is communicated with the electromagnetic valve through a hydraulic rubber pipe, a cab water valve is arranged on the side portion of the electromagnetic valve, and the cab water valve and the electromagnetic valve are communicated through a pipeline. And a digital display pressure controller and a safety valve are sequentially arranged on a pipeline between the electromagnetic valve and the cab water valve. According to the utility model, when the sealing element in the trolley leaks, the pressure in the pipeline is kept constant through the flow control valve, so that the defect that the electromagnetic valve is frequently cut off due to unstable pressure is eliminated.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine mechanical equipment and relates to an auxiliary water-saving device for a rock drilling trolley used in deep mines. Background Art

[0002] The drilling rigs used in underground mines are used to crush and drill rocks. When the rig is working, water is needed to cool the drill bit and drill rod, wash the rock cuttings, and play a role in lubrication and reducing the friction between the rig drill bit and drill rod. As the mining depth increases year by year, the height difference from the surface to the underground required for underground production is getting larger and larger. Under the action of gravity, the water will form a higher water pressure when it flows underground. Because some drilling rig drivers only close the water valve in the cab when the operation is interrupted, the static pressure of the water leading to the rig increases significantly. When the static pressure exceeds the safety valve limit, the safety valve on the drilling rig will be discharged, which will not only cause a waste of water resources, but also make the underground working surface muddy and cause the face approach to be uneven.

[0003] As can be seen from the technical content of the Chinese utility model patent entitled "A water supply device for energy-saving and environmentally friendly rock drilling trolleys in deep well mines" and application number CN202221367856.9, its pressure controller controls the blocking of water flow by judging the change of water pressure from the solenoid valve to the trolley arm. The utility model patent has high requirements for the seal and safety valve in the trolley. When the pressure rises to the upper limit of the pressure controller, the signal is sent to the solenoid valve to cut off the water. However, once a seal from the solenoid valve to the trolley arm of the device leaks or the pressure relief accuracy of the safety valve is not high, the water pressure monitored by the pressure controller will drop to 0MPa at the moment of cutting off, causing the water pressure to frequently switch between the upper limit and 0MPa, which is very easy to damage the solenoid valve. At the same time, the water path from the solenoid valve to the trolley drill bit will not be able to guarantee a stable water flow and pressure, affecting the operation of the trolley. Therefore, the utility model is a further improvement of the above-mentioned patent technical solution. Utility Model Content

[0004] The purpose of the utility model is to provide an auxiliary water-saving device for a rock drilling trolley used in deep mines in response to the problems existing in the prior art, which solves the problems that the prior art has high requirements on the seal and safety valve in the rock drilling trolley, easily damages the solenoid valve at the moment of water pressure cut-off, and cannot ensure stable water flow and pressure, thus affecting the operation of the trolley.

[0005] To this end, the utility model adopts the following technical solutions:

[0006] An auxiliary water-saving device for a rock drilling trolley used in deep mines comprises a water supply valve, a filter is provided on the side of the water supply valve, the filter adopts a Y-type filter, and the two are connected by a water supply hose, a pressure reducing valve is provided on the side of the filter, and the two are connected by a galvanized steel pipe, a pressure gauge is provided on the galvanized steel pipe, a solenoid valve and a flow control valve arranged in parallel are provided on the side of the pressure reducing valve, the pressure reducing valve and the solenoid valve are connected by a pipeline, the flow control valve is connected to the solenoid valve by a hydraulic hose, a cab water valve is provided on the side of the solenoid valve, and the two are connected by a pipeline, and a digital pressure controller and a safety valve are provided in sequence on the pipeline between the solenoid valve and the cab water valve.

[0007] The beneficial effects of the utility model are:

[0008] The utility model can solve the problem of waste of water resources and unequal access to the face caused by useless pressure relief of the trolley safety valve. Even if the seal in the trolley leaks, the utility model can still keep the pressure in the pipeline constant through the flow control valve, thereby eliminating the disadvantage of frequent cutting off of the solenoid valve due to unstable pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] In the figure, 1-water supply valve, 2-filter, 3-pressure gauge, 4-pressure reducing valve, 5-solenoid valve, 6-flow control valve, 7-digital pressure controller, 8-safety valve, 9-cab water valve, 10-galvanized steel pipe, 11-hydraulic hose, 12-water supply hose. DETAILED DESCRIPTION

[0011] The technical solution of the utility model is described below in conjunction with the accompanying drawings and implementation methods.

[0012] like Figure 1 As shown, an auxiliary water-saving device for a rock drilling trolley used in deep mines includes a water supply valve 1, and a filter 2 is provided on the side of the water supply valve 1. Specifically, the filter 2 adopts a Y-type filter, and the two are connected through a water supply hose 12.

[0013] A pressure reducing valve 4 is provided on the side of the filter 2, and the two are connected by a galvanized steel pipe 10. A pressure gauge 3 is provided on the galvanized steel pipe 10. A solenoid valve 5 and a flow control valve 6 arranged in parallel are provided on the side of the pressure reducing valve 4. The pressure reducing valve 4 is connected to the solenoid valve 5 through a pipeline, and the flow control valve 6 is connected to the solenoid valve 5 through a hydraulic hose 11. Specifically, the flow control valve 6 is connected to two P6 hydraulic hoses 11, and both ends of the hydraulic hose 11 are respectively connected to the low-pressure side of the pressure reducing valve 4 and the outlet position of the solenoid valve 5.

[0014] A cab water valve 9 is provided on the side of the solenoid valve 5, and the two are connected through a pipeline. A digital pressure controller 7 and a safety valve 8 are provided in sequence on the pipeline between the solenoid valve 5 and the cab water valve 9; specifically, the digital pressure controller 7 is powered by DC24V, connected to the power box of the drilling rig with a communication cable, and the solenoid valve is connected to the normally open point of the digital pressure controller.

[0015] The utility model is used in the following process:

[0016] Before use, adjust the pressure reducing valve 4 and the digital pressure controller 7. First, open the water supply valve 1, close the cab water valve 9, and use a wrench to adjust the pressure of the pressure reducing valve 4 so that the outlet pressure of the pressure reducing valve 4 is less than the nominal pressure of the safety valve 8. Then adjust the upper limit value of the digital pressure controller 7 so that its upper limit value is the same as the nominal pressure of the safety valve 8.

[0017] When the trolley is in a work interruption state, the trolley driver will close the cab water valve 9. Since the water supply valve 1 is not closed, the static pressure of the water in the trolley pipeline will increase significantly and be greater than the nominal pressure of the safety valve 8. The digital pressure controller 7 transmits the signal to the solenoid valve 5, and the solenoid valve 5 is energized to cut off the water supply pipeline; when the trolley resumes the drilling operation, the water pressure between the solenoid valve 5 and the trolley drill bit will drop significantly, lower than the upper limit value of the digital pressure controller 7, the solenoid valve 5 loses power, and the water in the pipeline flows to the trolley drill bit.

[0018] At the same time, the utility model adds a flow control valve 6. If a seal in the trolley water supply pipeline leaks, the pressure from the solenoid valve to the drill bit will be supplemented by the bypass pipeline of the flow control valve 6, so that the pressure in this section of the pipeline remains constant, eliminating the problem of frequent opening and closing of the solenoid valve due to leakage, and eliminating the impact on the trolley operation.

Claims

1. A water-saving device for a rock drilling trolley used in deep mines, characterized in that: The invention comprises a water supply valve (1), wherein a filter (2) is provided on the side of the water supply valve (1), and the two are connected through a water supply hose (12); a pressure reducing valve (4) is provided on the side of the filter (2), and the two are connected through a galvanized steel pipe (10); a pressure gauge (3) is provided on the galvanized steel pipe (10); a solenoid valve (5) and a flow control valve (6) are provided on the side of the pressure reducing valve (4), and the pressure reducing valve (4) and the solenoid valve (5) are connected through a pipeline; the flow control valve (6) is connected to the solenoid valve (5) through a hydraulic hose (11); a cab water valve (9) is provided on the side of the solenoid valve (5), and the two are connected through a pipeline; a digital pressure controller (7) and a safety valve (8) are provided in sequence on the pipeline between the solenoid valve (5) and the cab water valve (9).

2. The auxiliary water-saving device for a rock drilling trolley used in a deep mine according to claim 1, characterized in that: The filter (2) is a Y-type filter (2).

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