CN101947499A - Cyclone desander for removing fine sand from surface water - Google Patents

Abstract

The invention discloses a cyclone desander, which belongs to a solid-liquid separation device. The cyclone desander is a cyclone desander for removing fine sand from surface water, which is developed for removing sand from river water sources or other water sources with high sand content effectively. The cyclone desander comprises a cavity, a feed pipe, an overflowing pipe and a bottom flow pipe, wherein the cavity consist of an upper cylindrical cavity, a middle large conical cavity and a lower small conical cavity; the feed pipe is connected from the side wall of the upper cylindrical cavity tangentially; the bottom part of the lower small conical cavity is connected with the bottom flow pipe; the overflowing pipe is led out upward from the center of the upper cylindrical cavity; a central air duct is arranged at the position of the central axis of the cavity of the cyclone desander; the lower end of the central air duct is open and positioned between the upper edge of the bottom flow pipe and the lower edge of the overflowing pipe; and the upper end of the central air duct passes through the overflowing pipe and leads out a central air column absorbed by the cyclone desander. Through the arrangement of the air duct, the processing capacity of the cyclone desander is improved by about 30 percent and the energy consumption of the cyclone desander is reduced by about 20 percent compared with those of the common cyclone desander.

Description

A kind of hydrocyclone that is used for the removal of surface water fine sand

Technical field

Hydrocyclone of the present invention belongs to a kind of equipment for separating liquid from solid, and particularly a kind of separatory high desanding efficiency of fine grained that is applicable to reaches the hydrocyclone than low energy consumption and underflow productive rate.

Background technology

To be a kind of effect that utilizes pressure be converted into the device that rotatablely moves with the rectilinear motion of fluid to hydrocyclone desander, relies on centrifugal sedimentation to separate.But its inside does not have moving component, little, the easy for installation continued operation of floor space, safeguards simply, is used as the desirable water treatment facilities of desanding in the water source heat pump system.

When containing the higher source water of fine husky amount and select hydrocyclone, adopt minor diameter, small-angle hydrocyclone usually, there is research to adopt the form of bipyramid section to improve the removal efficient of fine sediment.The minor diameter hydrocyclone has removal effect preferably to fine sediment, but its operating pressure is also relatively large, and energy loss is higher.

Air column is a kind of endemism in the work of Separation of Solid and Liquid hydrocyclone, and the cyclone that every underflow opening opens wide all air column will occur in operate as normal.The existence of air column causes containing in the overflow water outlet a large amount of air, after such overflow that has a large amount of air enters water source heat pump units, can reduce the heat transference efficiency of source pump, influences the whole energy index of water source heat pump system.

Studies show that any separation process does not take place in air column inside, the energy of its internal consumption only is used to keep the existence of air column, the work of hydrocyclone is not played the direct effect in any front.But the energy of air column internal consumption accounts for about half of the whole internal losses of cyclone.The later cyclone of cancellation air column can change the distribution of internal energy, improves the outlet pressure of overflow, and reduces the internal pressure loss.

The scientific research personnel is mainly from preventing that underflow from sucking air and setting about in the research in the past, often adopts the sealing underflow or connect method such as sufficiently long pipeline on underflow opening, and these modes all can not adopt in actual production owing to destroyed cyclone normal separation process.Even adopt,, then be difficult to avoid fully the appearance of air column equally if contain the gas of q.s in the charging of cyclone.The mode that present stage offsets except that air column in the waterpower cyclone mainly contains solid bar and center insertion parts structure (particularly center fin) etc.These two kinds of structures can effectively reduce the operation energy consumption of hydrocyclone, improve separative efficiency, but the solid rod in center has occupied the inner space of hydrocyclone, causes disposal ability to reduce; The center fin places desander inside, is not suitable for the equipment application of desander.

Summary of the invention

The present invention is directed to the deficiencies in the prior art, a kind of improved hydrocyclone that the surface water fine sand is removed that is used for is provided,, improve disposal ability to reduce operation energy consumption.

Technical scheme of the present invention is:

A kind of hydrocyclone that is used for the removal of surface water fine sand, it comprises cavity, feed pipe, overflow pipe and underflow pipe, described cavity is made up of the cylindrical cavity of epimere, the big circular cone cavity in stage casing and the conicle cavity of hypomere, described feed pipe is tangentially inserted by the sidewall of the cylindrical cavity of epimere, the bottom of the conicle cavity of hypomere connects underflow pipe, and overflow pipe then upwards picks out from the center of the cylindrical cavity of epimere;

It is characterized in that: set up a center air conduit in the central axis position of hydrocyclone cavity, described center air conduit lower ending opening and be arranged at the underflow pipe upper limb and the overflow pipe lower edge between, overflow pipe is passed in its upper end, outwards derives the center air column that hydrocyclone sucks.

Also be connected to one section overflow delivery line on described overflow pipe, the center air conduit is a hollow circular tube, and the bottom can be regulated apart from the distance of underflow pipe upper limb.

The present invention has following advantage:

1. this hydrocyclone adopts the center air conduit to occupy the position of air column, has destroyed the formation of air column, and air is derived by the center air conduit, and is capable of reducing energy consumption about 20%, and the disposal ability of hydrocyclone can improve about 30%;

2. the center air conduit lower edge of hydrocyclone can be regulated apart from the distance of underflow pipe top edge, helps regulating the different service condition of operating condition adaptation of hydrocyclone;

3. for the surface water water source heat pump system, can suck air when using general hydrocyclone, thereby change the fluid state of water inlet, this hydrocyclone is derived the intermediate air post by employing center air conduit, so can avoid the fluid after the hydrocyclone to become solid, liquid, gas three-phase stream, keep the water source heat pump units water inlet and be essentially solid, liquid two-phase stream, thereby do not reduce the heat transfer property of fluid, significant for the operation of surface water water source heat pump system.

This structure is specially at the higher source water of fine husky content.

Description of drawings

Fig. 1 is a structural representation of the present invention.

The specific embodiment

In conjunction with the accompanying drawings, but protection scope of the present invention is not limited to accompanying drawing and following specific embodiment.

As shown in Figure 1, this hydrocyclone comprises cavity, feed pipe 1, overflow pipe 8 and underflow pipe 7.Wherein cavity is made up of the cylindrical cavity 4 of epimere, the big circular cone cavity 5 in stage casing and the conicle cavity 6 of hypomere.Feed pipe 1 is tangentially inserted by the sidewall of the cylindrical cavity 4 of epimere, and the bottom of the conicle cavity 7 of hypomere connects underflow pipe 7, and 8 centers from the cylindrical cavity 4 of epimere of overflow pipe upwards pick out.More than for having the cyclone of common structure now.The improvement of this structure is to have increased center air conduit 3, it is a hollow circular tube, its lower ending opening is connected with this hydrocyclone inner fluid, and be arranged between the lower end of the upper end of underflow pipe 7 and overflow pipe 2, the upper end of center air conduit 3 is passed from overflow pipe 2, and the tube wall of the overflow pipe fairlead 8 that connects from overflow pipe 2 upper ends outwards passes, and outwards derives the center air column that hydrocyclone sucks.

Claims (3)

1. one kind is used for the hydrocyclone that the surface water fine sand is removed, it comprises cavity, feed pipe, overflow pipe and underflow pipe, described cavity is made up of the cylindrical cavity of epimere, the big circular cone cavity in stage casing and the conicle cavity of hypomere, described feed pipe is tangentially inserted by the sidewall of the cylindrical cavity of epimere, the bottom of the conicle cavity of hypomere connects underflow pipe, and overflow pipe then upwards picks out from the center of the cylindrical cavity of epimere;

It is characterized in that: set up a center air conduit in the central axis position of hydrocyclone cavity, described center air conduit lower ending opening and be arranged at the underflow pipe upper limb and the overflow pipe lower edge between, overflow pipe is passed in its upper end, outwards derives the center air column that hydrocyclone sucks.

2. hydrocyclone according to claim 1 is characterized in that also being connected on the described overflow pipe one section overflow delivery line.

3. hydrocyclone according to claim 1 and 2 is characterized in that described center air conduit is a hollow circular tube.

Images