Press type sludge dehydration equipment

Abstract

The invention discloses a pressing type sludge dewatering device, which comprises the straining chamber with feed head and outfall on the jamb wall, wherein the feed head connects to sludge transfer pump; the face side of filter pad is bundled by chain cloth; the filter pad installs colature discharging channel connecting to outfall; the straining chamber is cartridge-form straining chamber; the front end of straining chamber is sealed by openable thrust cover board; the rear end of straining chamber is sealed by the baffle; the filter pad is instaleed in straining chamber opposite thrust cover board; the circumferential of filter pad clings to cartridge-chamber of straining chamber; the opposite sides of filter pad connects to gas piston, which crosses the baffle and realizes the axial shuttle with connecting bar next to gas piston relying on the first propulsion plant; the outfall is between baffle and filter pad; the feed head is located between pulling-cover board and filter pad; the primary sludge is pressed by pressure of transfer pump; the sludge after primary pressing is pressed with more pressure by gas piston, so the squeeze ratio of sludge improves.

Description

technical field [0001] The invention relates to a device for two-phase separation of solid and liquid, in particular to a filter press for dewatering sludge. Background technique [0002] The equipment for two-phase separation of solid and liquid is widely used in chemical industry, sugar refining, pharmaceutical, food, mineral processing, sewage treatment and other industries. Existing filter presses are divided according to their specific structures, generally there are plate filter presses, belt filter presses and vacuum filter presses, etc. Taking the plate filter press as an example, its main structure is: each filter press of the filter press The chamber is composed of multiple sets of filter plates, each filter plate is wrapped with filter cloth, and the center of each filter plate is equipped with a filter slurry pressure hole and a filtrate discharge channel, and the delivery pump passes the filter slurry pressure into the hole, and the liquid with a certain water c...

AI Technical Summary

Problems solved by technology

[0003] The main defect of the above-mentioned filter press for solid-liquid separation is: since the space of the filter chamber remains unchanged or can only have a small change, the effect of the press filter mainly depends on the delivery pressure of the delivery pump. The moisture content of the sludge press cake is about 90%, which is still relatively high. Due to the unsatisfactory dehydration efficiency, especially for sludge treatment, the volume of the sludge press cake after press filtration is still relatively large. If it is directly landfilled, it will account for There is a lot of land, and the resources of the waste disposal site are not fully utilized; if it is incinerated and then landfilled, it will consume a lot of energy due to the high water content. In short, the cost of subsequent sludge treatment will increase, which is uneconomical.

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