Solid-liquid switching valve

Abstract

The invention relates to the technical field of solid-liquid separation, in particular to a solid-liquid switching valve. The valve comprises a valve body and a valve element. A feeding port and a solid discharging port are vertically formed in the valve body in a penetrating mode, a corresponding solid channel is vertically formed in the valve element in a penetrating mode, and therefore solid materials can sequentially pass through the feeding port, the solid channel and the solid discharging port to communicate with external material receiving equipment. A liquid channel capable of communicating with the feeding port is further arranged on the outer wall of the valve element, a liquid discharging end is formed at the other end, opposite to the driving end, of the valve element, the liquid discharging end and an inner cavity of the valve body define a liquid accumulation cavity used for temporarily storing liquid materials, the liquid channel communicates with the liquid accumulation cavity, and a liquid discharging port communicating with the liquid accumulation cavity is formed in the valve body. Cavity extending paths of the liquid channel and the solid channel are spatially avoided from each other. According to the solid-liquid switching valve, the switching discharge effect of filter cake serving as a solid phase and cleaning liquid serving as a liquid phase can be smoothly achieved, and finally, the reliability, continuity and stability of the whole operation process are greatly improved.

Description

technical field [0001] The invention relates to the technical field of solid-liquid separation, in particular to a solid-liquid switching valve. Background technique [0002] As a centrifugal filter type solid-liquid separation equipment, the inverted bag centrifuge has the advantages of airtightness, automatic discharge, no residual filter cake, no damage to the crystal shape of the material, and a high degree of automation. It is widely used in pharmaceutical, chemical, food and other industries. [0003] The working process of the inverted bag centrifuge generally includes the stages of feeding, filtering, washing, dehydration, unloading, filter cloth regeneration, etc. According to the process requirements, the above stages can be increased or decreased, and the cycle operation. As shown in Figure 1-2: 1. In the feeding stage, the bag-turning centrifuge operates at low speed, the cavity of drum a is in a sealed state, and the material enters drum a through feed pipe b at...

AI Technical Summary

Problems solved by technology

If the cleaning liquid after rinsing is to be discharged from the filter cake outlet of the filter cake chamber, it is necessary to remove and disconnect the connected drying equipment or solid collection device first, drain the cleaning liquid after rinsing, and then connect the drying equipment or solid The collection device is obviously extremely time-consuming and labor-intensive, and needs to be solved urgently

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