Spiral conveyor with auxiliary blades and spiral discharging sedimentation centrifuge

Abstract

The invention discloses a spiral conveyor with auxiliary blades. A hollow inner barrel is provided with a conical section and a straight barrel section, a feeding hole is formed in the pipe wall close to the conical section, spiral blades are arranged at the periphery of the inner barrel, the plurality of auxiliary blades are arranged between the spiral blades, the width of the auxiliary blades is smaller than the pitch of the spiral blades, and every two adjacent auxiliary blades are arranged in a spiral channel space in a staggered manner to form a zigzag flow channel. The auxiliary blades are additionally arranged between the spiral blades and rotate along with the inner barrel, solid particles of suspension liquid entering the spiral conveyor are separated from a liquid phase under the action of a huge centrifugal force field, and the manner that the liquid is driven to rotate only through the spiral blades originally is changed through the auxiliary blades. The auxiliary blades drive the suspension liquid entering the space between the inner barrel and an outer barrel from discharging holes, so that the centrifugal force and the rotating speed can be immediately obtained, the solid-liquid two-phase separation is accelerated, and the separation efficiency is improved. Meanwhile, the auxiliary blades also increase the equivalent sedimentation area, so that a better separation effect is achieved.

Description

technical field [0001] The invention relates to the technical field of solid-liquid separation, in particular to a screw conveyor with auxiliary blades and a screw discharge sedimentation centrifuge. Background technique [0002] The screw discharge decanter centrifuge includes vertical and horizontal screw discharge decanter centrifuges. It is a high-efficiency centrifugal equipment for solid-liquid separation, and can be used in industrial and civil solid-liquid separation centrifugation processes. Horizontal screw discharge sedimentation centrifuge is referred to as decanter centrifuge for short. Compared with belt filter press and plate and frame filter press, decanter centrifuge has the characteristics of large processing capacity, automatic operation and good dehydration effect. , has been widely used in the industrial field. figure 1 It is an existing conventional decanter centrifuge structure, the drum includes the small end of the cone section 11 and the large end ...

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Problems solved by technology

[0004] The applicant aims at the disadvantages of poor separation effect, high solid content in the light phase, and the need for post-treatment procedures to filter or separate solids when the existing equipment groups in the above-mentioned existing production process suspensions that are difficult to separate from solid and liquid. , to provide a screw conveyor with auxiliary blades and a screw discharge sedimentation centrifuge with a reasonable structure. By increasing the equivalent settling area, separation length and increasing speed, the equipment can enhance the processing capacity of the equipment for suspensions that are difficult to separate solids and liquids and separation efficiency, the final light phase has low solid content, and can save space required for equipment, reduce investment and operating costs

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