CN202667010U - Dynamic hydrocyclone - Google Patents

Abstract

A dynamic hydrocyclone is mainly applicable to grading and concentrating dredged soil which is high in treatment quantity and operating flexibility during dredging construction and is fed under the condition of zero pressure or low pressure. According to the technical scheme, the dynamic hydrocyclone comprises a cyclone cavity, a rotating shaft, an impeller, a rolling bearing, a motor and an overflow tube, wherein the cyclone cavity is cylindrical; a feeding opening is tangentially formed in the front of the cyclone cavity and is connected with an outlet pipe of a dredged mud pump via a feeding pipe; the rotating shaft is arranged in the center of the cyclone cavity and is provided with the impeller; and the front of the rotating shaft sequentially passes through a front end cap of the cyclone cavity and the rolling bearing, and is connected with an output shaft of the motor via a coupler. The dynamic hydrocyclone is characterized in that the rolling bearing is arranged at the bottom of the rotating shaft; a supporting seat of the rolling bearing is connected with the inner wall of the cyclone cavity; the bottom of the cyclone cavity is connected with a conical barrel section; the bottom of the conical barrel section is provided with a bottom flow opening and an overflow pipe; the bottom flow opening is annular; and the front end surface of the overflow pipe is higher than the bottom end surface of the conical barrel section and is lower than the front end surface of the conical barrel section. The dynamic hydrocyclone is ideal equipment for separating solid from liquid during dredging construction.

Description

A kind of dynamic hydrocyclone

Technical field

The utility model relates to the device of dredging soil rating and concentrated usefulness in the ship dredging construction.

Background technology

Drag suction dredger through overflow, improved to a certain extent the concentration in the spoil hopper, but overflow time has occupied about 70% of the whole stowage time, has greatly prolonged the time of dredging in the stowage of dredging soil, and wastes a large amount of time in the process of transportation.Because dredging work is very great to the effect of enhancement of environment and economic development, people are in the urgent need to the mud-water separation technology efficient, energy-conservation, that volume is little.

According to the density variation of immiscible different material, cyclone separator is one of the most effective separation equipment.In existing cyclone separation process, be divided into two types of static rotational flow separation and dynamic hydrocyclones.The cardinal principle of static hydrocyclone is the static pressure that utilizes import department certain at present, when feed liquid is injected the cyclone cavity, static energy is converted into dynamic pressure, and forms Swirling Flow, utilizes complementary inconsistent two-phase suffered different generation of centrifugal force in Swirling Flow to separate; Its characteristics one are that charging must have certain pressure; The 2nd, to the solid phase particles of specified particle diameter, cyclone diameter is larger, and treating capacity is larger, and separating effect is poorer, and operating flexibility is little.The separation principle of dynamic cyclone device is also separated by the suffered centrifugal force difference of mutual exclusive two-phase in the eddy flow field, but the generation of eddy flow field provides by driven by motor wheel rotation or rotating cylinder.The characteristics one that ship dredging construction is processed silt are to need treating capacity large, and the feed of general single pump is at 10000m ³More than/the h, available lift is lower; The 2nd, material component is complicated, and particle size distribution range is wide.Existing number of patent application 98244285.8 and 01277425.1 described waterpower rotating force device belong to dynamic cyclone device, but its overflow pipe all is arranged in the rotating shaft, the specification of bearing has limited its size and has amplified and processing and manufacturing, and the vibrations in number of patent application 01277425.1 compound hydrocyclone cantilever-rotating impeller when operation of mentioning can cause the confusion in separating rotary flow field, and these two kinds of blade constructions all are only applicable to the water-oil separating situation of little treating capacity.

The utility model content

The purpose of this utility model provides a kind of dredging silt sorting of ship dredging construction high throughput, with no pressure or low pressure feed and concentrated dynamic hydrocyclone of being applicable to.

The technical solution of the utility model adopts the eddy flow chamber, rotating shaft, impeller, rolling bearing, motor and overflow pipe, this eddy flow chamber becomes cylindrical shape, front portion, eddy flow chamber charging aperture tangentially arranged, charging aperture is linked to each other with the outlet conduit of dredging pump by feed pipe, rotating shaft is contained in the center in eddy flow chamber, impeller is housed in the rotating shaft, the rotating shaft front portion is successively by eddy flow chamber drive end bearing bracket and rolling bearing, and be connected with motor output shaft with shaft coupling, it is characterized in that the rotating shaft bottom is provided with sliding bearing, the supporting seat of sliding bearing is connected with the inwall in eddy flow chamber, be connected with a conical cylinder section in bottom, eddy flow chamber, underflow opening and overflow pipe are arranged at the bottom of conical cylinder section, and underflow opening ringwise, the overflow pipe front end face exceeds the bottom face of conical cylinder section, and is lower than the front end face of conical cylinder section.

The utility model has the advantages that can to adapt to the dredging industry large to the classification of silt processing requirements silt and concentrated device processes amount, the problem that operating flexibility is large, but with no pressure or low pressure feed.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the schematic diagram of impeller cross section.

The specific embodiment

Structure of the present utility model (referring to accompanying drawing 1) adopts eddy flow chamber 7, rotating shaft 5, impeller 6, rolling bearing 3, motor 1, overflow pipe 12, these 7 one-tenth cylindrical shapes in eddy flow chamber, front portion, eddy flow chamber charging aperture 4 tangentially arranged, charging aperture is linked to each other with the dredging pump outlet conduit by feed pipe, and feed liquid enters in the eddy flow chamber from charging aperture; Rotating shaft is contained in the center in eddy flow chamber, and impeller is housed in the rotating shaft, and impeller drives the feed liquid High Rotation Speed and forms eddy flow, and the rotating shaft front portion is passed through eddy flow chamber drive end bearing bracket and rolling bearing successively, and is connected with motor output shaft with shaft coupling 2; The rotating shaft bottom is provided with sliding bearing 8, sliding bearing and rolling bearing countershaft support, vibration in the time of can reducing the rotating shaft rotation is to the disturbance in the flow field of inside, eddy flow chamber, the supporting seat 9 of sliding bearing is connected with the inwall in eddy flow chamber, be connected with a conical cylinder section 10 in the bottom in eddy flow chamber, underflow opening 11 and overflow pipe are arranged at the conical cylinder section bottom, and underflow opening ringwise, the overflow pipe front end face exceeds the bottom face of conical cylinder section, and is lower than the front end face of conical cylinder section; Bell mouth shape is made in the overflow pipe front portion, then can regulate the circulation area of underflow opening.The utility model can be vertically or horizontal positioned; After feed was normal, electric machine rotation drove rotating shaft and vane rotary, and vane rotary makes the rotating shaft outside form negative pressure, and charging is had certain swabbing action, realizes low pressure or with no pressure charging.After feed liquid enters the eddy flow chamber, impeller drives the feed liquid rotation, form the flow field of High Rotation Speed, rotational flow field at a high speed provides the centrifugal force that solid-liquid two is separated to be needed, make the immiscible two-phase of feed liquid realize separating, solid phase is discharged from underflow opening along the inwall in eddy flow chamber, and the water that density is little and fines converge from overflow pipe to central shaft discharges, thereby realizes separating.

Claims (2)

1. dynamic hydrocyclone, adopt the eddy flow chamber, rotating shaft, impeller, rolling bearing, motor and overflow pipe, this eddy flow chamber becomes cylindrical shape, front portion, eddy flow chamber charging aperture tangentially arranged, charging aperture is linked to each other with the outlet conduit of dredging pump by feed pipe, rotating shaft is contained in the center in eddy flow chamber, impeller is housed in the rotating shaft, the rotating shaft front portion is successively by eddy flow chamber drive end bearing bracket and rolling bearing, and be connected with motor output shaft with shaft coupling, it is characterized in that the rotating shaft bottom is provided with sliding bearing, the supporting seat of sliding bearing is connected with the inwall in eddy flow chamber, is connected with a conical cylinder section in bottom, eddy flow chamber, underflow opening and overflow pipe are arranged at the bottom of conical cylinder section, underflow opening ringwise, the overflow pipe front end face exceeds the bottom face of conical cylinder section, and is lower than the front end face of conical cylinder section.

2. a kind of dynamic hydrocyclone according to claim 1 is characterized in that the overflow pipe front portion makes bell mouth shape.

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