Distributing head of disk dewatering machine

Abstract

The invention discloses a distributing head of a disk dewatering machine, wherein a rotating member is provided with a rotating part contact platform and rotating part sunk platforms; the rotating part contact platform is an annular platform which uses the center of the circle of a shaft of the dewatering machine as a center of a circle; the rotating part sunk platforms are arranged on the rotating member on the inner side and the outer side of the rotating part contact platform; a fixed member is provided with a fixed part contact platform and fixed part sunk platforms; the fixed part sunk platforms at least comprises areas, of which the widths are equal to the widths of slurry sucking grooves, between two slurry sucking grooves, and extend to positions which are 1 / 3 to 1 / 4 of the radius size of a flushing pipe away from the outer wall of the flushing pipe respectively along the size of the respective slurry sucking grooves and in a direction from the two slurry sucking grooves to the flushing pipe; the surfaces of the fixed part sunk platforms are sunk for 4mm to 6mm relative to the surfaces of the fixed part contact platforms. By using the distributing head of the disk dewatering machine, the adsorption efficiency is increased by 140 percent; the service life is greatly improved, thereby bringing the improvement of a dewatering effect and the prolonging of the service life of a disk piece and the service life of the whole machine; the economic benefit is extremely high; the distributing head of the disk dewatering machine has extremely wide application prospects in industrial and mining enterprises of a heat-engine plant, iron and steel, coal mining and the like, and is extremely high in popularization value.

Description

technical field [0001] The invention relates to a disc dehydrator, in particular to a distribution head of the disc dehydrator. Background technique [0002] The disc dehydrator is a more efficient and energy-saving dehydration equipment. Its working process is divided into slurry suction, filtration, drying, unloading, and backwashing. The distribution head is connected to the vacuum pump to complete slurry suction, and connected to the flushing and filtering system for backwashing; figure 1 , 2 As shown, the dispensing head consists of two main parts: a rotating part and a fixed part, and the two parts are pressed together by spring force. The rotating parts are evenly arranged with 12 holes, and the 12 holes correspond to 12 connecting branch pipes, which are distributed to each row of fan-shaped disks; the fixed parts are installed on the frame of the machine body, and there are two separate slots, the slurry suction tank and the flushing tank, and the slurry suction t...

AI Technical Summary

Problems solved by technology

Since the contact surface is integral contact and the rotating parts have many holes, the actual frictional contact area is far smaller than that of the fixed parts, resulting in excessive wear of the rotating parts and the concave surface between the holes, and the corresponding convex surface of the fixed part, resulting in a gap between the slurry suction tank and the flushing tank. The leakage between the gaps is serious. Since the surface tension of the liquid penetrating into the sealing surface is not considered, the elastic force of the compensation mechanism is not enough to overcome this tension. The liquid gap forms a flow channel, which increases the leakage between the slurry suction tank, the flushing tank and the atmosphere.

Moreover, the surface finish cannot effectively prevent the fluid medium from leaking between the slurry suction tank, the flushing tank, and the atmosphere when it is rotating, and the independent and sealed chamber is destroyed. In the short term, the distribution head has medium leakage and the dehydration effect is reduced. Long-term operation, the solid particles in the medium enter the sealing surface under the action of liquid pressure, and the sealing surface closes and rotates. These solid particles actually become a "grinding wheel" and will aggravate the wear on the surface.

It cannot be reused, and even the life of the whole machine is reduced

[0004] The distribution head is made of hard ceramics. Although the anti-corrosion properties are satisfactory, the wear resistance is far from enough. There will be medium leakage within less than 100 hours after the distribution head is assembled. When the fine grinding surface is worn, the leakage will increase, especially not The leakage between the slurry suction tank and the flushing tank in the visible part is more serious, and there are obvious concave and convex surfaces in the partition part, which affects the dehydration effect and the life of the disc; while the adhesive is fixed, it must be destructively removed when dismantling, and it needs to wait for curing during maintenance time, resulting in maintenance time-consuming of more than 24 hours, and the need for special fixtures to prevent displacement before uncured, all of which lead to a significant increase in use and maintenance costs

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