Mining excavator spraying pump inner and outer circulation pressure and flow separation valve

Abstract

The invention discloses a mining excavator spraying pump inner and outer circulation pressure and flow separation valve. The valve comprises a safety valve, a valve block, an inner spraying pressure adjusting bolt, an inner spraying pressure gauge, a liquid inlet K type joint, a plug screw, an inner spraying K type joint, an outer spraying K type joint, an outer spraying pressure adjusting bolt, an inner and outer spraying flow adjusting bolt, a lock bolt and an outer spraying pressure gauge. High-pressure water enters the valve block, and is divided into inner circulation spraying water currents and outer circulation spraying water currents; hydraulic water is adjusted by the inner and outer spraying flow adjusting bolt, so that the water currents on the left and right sides form a flow difference; the inner circulation water currents adjust the pressure as 4 MPa through the inner spraying pressure adjusting bolt, and are sprayed to an inner circulation nozzle by the inner spraying Ktype joint; and the outer circulation water currents adjust the pressure as 2 MPa through the outer spraying pressure adjusting bolt, and are sprayed to an outer circulation nozzle by the outer spraying K type joint to achieve the design purpose of the mining excavator spraying pump inner and outer circulation pressure and flow separation valve.

Description

technical field [0001] The invention relates to a pressure-dividing and flow-diverting valve for internal and external circulation of a mine roadheader spray pump, in particular to a pressure-dividing and flow-dividing device which divides one path of water into two paths, and the two paths of water have pressure difference and flow difference. Background technique [0002] At present, most of the hydraulic control valves of the mine roadheader spray pump are one-way water flow hydraulic control valves, and there is no pressure difference and flow difference when they are divided into two paths; in actual work, the roadheader has two spray hydraulic systems, one is The inner circulation hydraulic system, the other is the outer circulation hydraulic system, and the pressure of the two hydraulic systems cannot be the same, the inner circulation hydraulic system is greater than the outer circulation hydraulic system; this requires installation on the roadheader spray pump that c...

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Problems solved by technology

[0003] The present invention solves the problem that "most of the hydraulic control valves of the mine roadheader spray pump are one-way water flow hydraulic control valves, and there is no pressure difference and flow difference when they are divided into two paths; in actual work, the roadheader has two spray hydraulic systems. , one is the internal circulation hydraulic system, the other is the external circulation hydraulic system, and the pressure of the two hydraulic systems cannot be the same, and the internal circulation hydraulic system is greater than the external circulation hydraulic system; "This problem proposes a mining roadheader The internal and external circulation partial pressure diverter valve of the spray pump adjusts the two-way water flow of the system through the internal and external spray flow valves, so that the pressure of the inner circulation water flow is 4MPa, and the pressure of the outer circulation water flow is 2MPa, so that the flow and pressure of the two water pressures are different. Purpose

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