CN1088629C

CN1088629C - Steady flow type horizontal helico-centrifuger

Info

Publication number: CN1088629C
Application number: CN99119982A
Authority: CN
Inventors: 吕资谷; 吕张红
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-11-08
Filing date: 1999-11-08
Publication date: 2002-08-07
Anticipated expiration: 2019-11-08
Also published as: CN1251784A

Abstract

The present invention relates to a static flow horizontal type spiral centrifugal machine. The present invention is characterized in that cylinder bodies 8 are arranged inside rotary cylinders; a main separation chamber I is composed of a left conical cylinder body 9 and a right conical cylinder body 9' which have opposite orientations; the left conical cylinder body 9 is fixed on one cylinder body 8 and the rotary cylinder 2; the right conical cylinder body 9' is fixed on the other cylinder body 8 and the rotary cylinder 2'; through holes are arranged on the rotary cylinders 2 and 2', the left conical cylinder body 9 and the right conical cylinder body 9'. The present invention has the advantages that the main separation chamber I and the netty rotary cylinders 2 and 2' are arranged, filter liquor at the inner side of the netty rotary cylinders 2 and 2' is not affected by the disturbance of helical blades, and the separating efficiency is high; the sewage processing capacity of the present invention is 1.5 times to 2 times greater than the sewage processing capacity of the common centrifugal machine under the condition of no delivering macromolecule coagulant, and the height difference speed can be permitted; the length ratio of column cones of the rotary drums is 1: 2 to 1: 2.5. The present invention has the advantages of short machine bodies, low rotation speed and light weight.

Description

Steady flow type horizontal helico-centrifuger

The present invention relates to a kind of centrifuge that rotary rotating cylinder is arranged, particularly a kind of steady flow type horizontal helico-centrifuger.

In the technology that has the sixth of the twelve Earthly Branches, the dehydration of industrial wastes or sewage is all carried out in same passage and is finished, because helical blade is laid in the rotating shaft, cause waste liquid in the space of conveyor screw and rotary drum formation, to separate, like this because rotary drum and spirochetal differential cause the stirring of helical blade to filtrate, thereby reduced separating effect, conventional device is in order to improve separating effect, have to utilize following four kinds of methods to be improved: 1. improve separating factor, just increase roller diameter, improve rotating speed.2. reduction differential.3. increasing settling zone length, also is lengthened fuselage.4. the waste liquid that enters seperator is thrown in a large amount of polymer coagulants.These above ways can not be improved effect of settling at all; increased the expense of cost of equipment and operation again greatly; be not difficult to separate if do not add polymer coagulant for activated sludge; as the sewage of printing and dyeing industry and the black liquor in paper mill etc.; the long-term storing in the cesspool; cause farmland pollution after overflowing; owing to lack effective separator at present; all be difficult to solve the emission problem of trade effluent and civil sewage for a long time; cause natural environment is polluted; harm to health is on the rise, and people expect conservation of nature environment effectively.

The object of the present invention is to provide a kind of steady flow type horizontal helico-centrifuger efficiently, its technical measures are to be provided with a main separation chamber in machine, and the netted rotating cylinder of employing, the mud that main separation chamber separates accounts for the major part of total sludge quantity, and this partly mud directly enter in the space of rotary drum and the formation of netted rotating cylinder and be sent to slag notch by helical blade, simultaneously that filtrate channel and mud passage is well-separated, filtrate is only in netted rotating cylinder internal flow, mud is then pushed by the helical blade that highly has only 20～25mm in netted rotating cylinder outside, both do not disturb mutually, unlikely formation turbulent flow, thus separating effect further improved.Its advantage is to shorten decanting zone length, improve differential, do not throwing under the prerequisite of polymer coagulant, just can obtain very limpid filtrate.

A kind of steady flow type horizontal helico-centrifuger, comprise rotary drum, rotating cylinder, helical blade, differential mechanism, feed pipe, filtrate (liquid, slag notch, helical blade is arranged on the rotating cylinder outer peripheral face, it is characterized in that rotating

cylinder

2 and 2 is netted, have radial direction through hole on it, be provided with cylinder 8 at rotating cylinder 2 and 2 ＇ inside, be provided with one by the main I of separation chamber that constitutes towards opposite left taper tube 9 and right taper tube 9, left taper tube 9 is fixed on cylinder 8 and the rotating cylinder 2, and right taper tube 9 is fixed on cylinder 8 and rotating cylinder 2 ＇, and the spacing between rotating cylinder 2 and the rotating cylinder 2 is not less than 10mm, a left side, right taper tube is provided with through hole, left taper tube 9 cone angles are 40 °～50 °, and right taper tube 9 cone angles are 55 °～60 °, and the angle between its center line of the through hole on the left taper tube 9 and this conic tube bus is 90 °, its center line of through hole on right taper tube 9 ＇ and the angle between this conic tube bus are not more than 30 °, left taper tube 9 bottoms are provided with a shirt rim that makes mud toward the motion of slag notch direction, and rotary drum 1 adopts the post taper, perhaps the taper of post awl, the length ratio of its post awl is 1: 2～2.5, in post awl wimble structure, semi-cone angle α 1 is not more than 3 °, and semi-cone angle α 2 is 9 °～12 °.

With prior art relatively, advantage of the present invention is: (1) be provided with the main I of separation chamber and netted rotating cylinder 2,2 ', the separative efficiency height, under the condition of not throwing in polymer coagulant, the ability of disposing of sewage is 1.5～2 times of conventional centrifuge.(2) allow rotary drum, rotating cylinder speed difference to reach 30～50 rev/mins of per minutes.(3) post of rotary drum awl length ratio is 1: 2～2.5, and equipment volume is little, and is in light weight, and rotating speed is low.

Fig. 1 is the structural representation of steady flow type horizontal helico-centrifuger.

Embodiment 1:

A kind of steady flow type horizontal helico-centrifuger, as shown in Figure 1, rotary drum adopts post awl wimble structure, cylindrical section size Φ 600 * 700mm, the first awl segment length is 1000mm, semi-cone angle α 1 is 2.5 °, the 2nd awl segment length is 500mm, semi-cone angle α 2 is 10 °, and rotating

cylinder

2 and 2 percent opening are 70%, mainly separates that its percent opening is 20% on the locular wall, the height of helical blade is 25mm, the feed pipe internal diameter is 40mm, and cylinder 8 external diameters are 150mm, and the cone angle of left taper tube 9 is 45 °, right taper tube 9 cone angles are 55 °, the rotary drum rotating speed is that per minute 2800 changes, and the speed difference is changeed for per minute 30, and complete machine weight is 1000kg, do not throw in polymer coagulant, per hour dispose of sewage 8 tons, filtrate is limpid, and the moisture content of slag is 70%.

Embodiment 2:

A kind of steady flow type horizontal helico-centrifuger, rotary drum are the post taper, and cylindrical section appearance and size is Φ 600 * 600mm, the awl segment length is 1300mm, and the helical blade height is 25mm, and the remainder structure is identical with embodiment 1, do not throw under the polymer coagulant situation, per hour disposing of sewage 7.5 tons.

Claims

1. steady flow type horizontal helico-centrifuger, comprise rotary drum, rotating cylinder, helical blade, differential mechanism, feed pipe, filtrate (liquid, slag notch, helical blade is arranged on the rotating cylinder outer peripheral face, it is characterized in that: rotating cylinder (2) and (2 ') are netted, have radial direction through hole on it, be provided with cylinder (8) at rotating cylinder (2) and (2 ') inside, left taper tube (9) is fixed on cylinder (8) and the rotating cylinder (2) by the main separation chamber (I) that constitutes towards opposite left taper tube (9) and right taper tube (9 ') to be provided with one, and right taper tube (9 ') is fixed on cylinder (8) and the rotating cylinder (2 '), spacing between rotating cylinder (2) and the rotating cylinder (2 ') is not less than 10mm, a left side, right taper tube is provided with through hole.

2. screw centrifuge according to claim 1 is characterized in that: left taper tube (9) cone angle is 40 °～50 °, and right taper tube (9) cone angle is 55 °～60 °.

3. screw centrifuge according to claim 1, it is characterized in that: its center line of through hole on the left taper tube (9) and the angle between this conic tube bus are 90 °, and its center line of through hole on the right taper tube (9 ') and the angle between this conic tube bus are not more than 30 °.

4. screw centrifuge according to claim 1 is characterized in that: left taper tube (9) bottom is provided with a shirt rim that makes mud toward the motion of slag notch direction.

5. screw centrifuge according to claim 1 is characterized in that: rotary drum (1) adopts the post taper, perhaps the taper of post awl, the length ratio of its post awl is 1: 2～2.5, in post awl wimble structure, semi-cone angle (α 1) is not more than 3 °, and semi-cone angle (α 2) is 9 °～12 °.