Two-position six-way reversing valve for pressure-regulating suspended mass sampler

Abstract

The patent of the present invention provides a reversing valve for a pressure-regulating suspended mass sampler, which has two working positions and six ports. It is composed of valve body, ceramic valve core, stopper, end cover and electromagnet. The ceramic spool is composed of two static pieces and one moving piece. The moving piece and the static piece have water holes, vent holes, blind grooves, shoulders and grooves respectively. The two shoulders on the moving piece are respectively connected to the two static pieces. The valve core is fitted into the seat groove of the valve body and the valve cover. After the valve cover is connected with the valve body by bolts and pressed against the valve core, a hard seal is formed on the contact surface of the moving piece and the static piece. The driving electromagnet pushes the moving piece of the valve core to move left and right through the push rod, so that the water hole and the ventilation hole on the moving piece of the valve core are respectively aligned with the corresponding water hole and ventilation hole on the static piece, and are respectively aligned with the valve body and the valve cover. The water hole and the vent hole are connected to form two independent paths, namely the water path and the air path, to realize the function of path switching. The working reliability and service life of the switching valve can be greatly improved, and the sampling is more accurate.

Description

technical field [0001] The patent of the present invention relates to a two-position six-way reversing valve, which is used for switching the working state of a pressure-regulating suspended mass sampler. Background technique [0002] With the continuous development of the national economy, soil erosion and ecological environment construction have been put on the important agenda. Accurate collection of hydrological and sediment data can provide accurate sediment transport data for the decision-making of water and soil erosion, environmental governance and flood control departments. great practical significance. [0003] The key to collecting hydrological and sediment data is to accurately and timely collect sediment-containing river water samples, which has long been a major problem for hydrological departments. In order to meet the needs of river sediment water sample collection, relevant domestic departments have continuously developed and improved sediment sampling inst...

AI Technical Summary

Problems solved by technology

The two-way sampler has the problem of too long pressure regulation time and nozzle sand accumulation, the three-way sampler solves the problem of too long pressure regulation time, and the four-way sampler basically solves the problem of long pressure regulation time and nozzle sand accumulation

There are major defects in this rotary valve structure: first, the structure is complex, the failure rate is high, and maintenance is difficult; The volume of the valve is limited, the teeth of the driving gear are easily broken, the transmission chain is damaged, and the switch valve is invalid; the fourth is that the seal is not reliable, the motor is prone to water ingress and malfunction, and the reliability is low

From the perspective of usage, many problems of the above on-off valves lead to the inability of the sampler to sample accurately, which has brought troubles to the hydrological department

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