CN201261752Y - Improved sludge dewatering machine - Google Patents

Abstract

The utility model relates to an improved sludge dewatering equipment, which comprises a main shaft, an inner ring bush, an outer ring bush, ring-shaped filter screens, a scraper and a housing, wherein the inner ring bush is fixed at the periphery of the main shaft; the outer ring bush is arranged on the outer side of the inner ring bush and is fixed by the housing; an opening is formed on the outer ring bush; the opening is divided into a sludge inlet and a sludge outlet; the two ring-shaped filter screens are arranged on the two side surfaces of the inner ring bush; the inner circumferential edges of the two ring-shaped filter screens are connected with the inner periphery of the inner ring bush; and the outer circumferential edges of the two ring-shaped filter screens are connected at the outer periphery of the inner ring bush. Therefore, an annular filtration chamber around the main shaft is formed, and the scraper is mounted in a way that the edge thereof oppositely contacts with the inner side surface of the screen in an acute angle. The sludge dewatering equipment is characterized in that the front end of the scraper is arranged on the outer ring bush, and is fixed after turning a certain angle in relative to the outer ring bush; and the clearance between the scraper and the filter screen can be adjusted by turning the front end of the scraper. By adopting the utility model, the clearance between the scraper and the filter screen can be adjusted by turning the front end of the scraper according to different sludge, so that the appropriate size of a thin layer of filter cake can be ensured, and the filtering can be performed well.

Description

A kind of improved sludge dewatering equipment

Technical field

The utility model belongs to a kind of dehydration (solid-liquid/separation) equipment, specifically belongs to a kind of sludge dewatering equipment.

Background technology

One of sludge characteristics is exactly difficult dehydration, and wherein contained humidity comprises cellular water, planar water, capillary water and free water.The kind of mechanical dehydration can be divided into vacuum filtering and dewatering, filter-press dehydration and centrifuge dehydration three major types by dewatering Principle.Vacuum filtering and dewatering system places mud on the porousness filtration medium, causes vacuum at the medium opposite side, with the moisture in the mud " suctions " by force, makes it to separate with mud, thereby realizes dehydration, and the equipment of using always has various forms of vacuum drum filter and dehydration machines.Filter-press dehydration system places mud on the filtration medium, in mud one side mud is exerted pressure, and makes moisture pass through medium by force, makes it to separate with mud, thereby realizes dehydration, and equipment commonly used has various forms of belt filter pressing dehydrators and plate-and-frame filter press.Thereby centrifuge dehydration system realizes dehydration by being separated from each other of official post of the centrifugal force of moisture and mud granule, and equipment commonly used has various forms of centrifuges.

More than several dehydration equipments all have certain use history, but there is very big difference in concrete service condition.The early stage sewage work that builds adopts the vacuum filtering and dewatering machine mostly, but because its moisture content of the cake is higher, noise is big, it is also big to take up an area of, and its structure and performance itself do not have bigger improvement, twentieth century seldom adopted since the eighties.Filter press water extracter moisture content of the cake is minimum, thereby is adopting always, but this water extracter is intermitten service, and efficient is low, and troublesome poeration, and maintenance is very big, so use not generally, only uses under the very low situation of mud extraction water ratio requiring.Belt filter press is a dehydration equipment commonly used in recent years, it is that pressure is applied on the filter cloth, pressure and tension force with filter cloth make sludge dewatering, this equipment claimed frequent cleaning filter cloth, recoil water consumption sewage big, that secondary generates in the recoil process strengthens, and dehydrating effect is unsatisfactory, and from some equipment users that understand, the user is very dissatisfied to the dewatering of this equipment.The dehydrating effect of centrifuge dehydration equipment is relatively good, but its current consumption is big, and noise is also big, and from the angle of noise, it is a bigger sound pollution equipment.In addition, the shortcoming of this equipment maximum is: in case break down, be difficult to accurately grasp spindle balance during maintenance, maintenance difficulty is very big, and in a single day axis produces balance deviation, and is very big to the damage of equipment, aggregate analysis, originally used dehydration equipment is unsatisfactory in the water treatment market.

Chinese patent 200480042608.5 (publication number is CN1933886A), a kind of rotation compression filter is disclosed, this pressure filter has the cyclic filtration chamber that forms around turning axle, by making the sieve rotation of hollow disc shape, moisture is leaked the aperture of sifting out, be discharged to outside the filtration chamber gradually, this pressure filter also is provided with scraper plate, this scraper plate is installed with respect to the mode that the medial surface of sieve of rotation carries out the acute angle contact with its edge, though it is big that this pressure filter has solved noise, the problem that current consumption is big, but the gap between its scraper plate and the screen cloth can not flexible, can not effectively keep the suitable yardstick of filter cake thin layer, reaches the high purpose of dehydration rate.

Summary of the invention

Technical problem to be solved in the utility model is: provide the sludge dewatering equipment that a kind of volume is little, noise is low, current consumption is little, but the scraper plate of this sludge dewatering equipment and the gap flexible between the screen cloth make filter cake thinner, thereby play better filteration.

In order to solve the problems of the technologies described above, the utility model is by the following technical solutions: a kind of improved sludge dewatering equipment, comprise main shaft, inner ring bushing, the outer ring lining, the annular filter screen cloth, scraper plate and shell, inner ring bushing is fixed on around the main shaft, the outer ring lining is arranged on the outside of inner ring bushing and is fixed by shell, the outer ring lining is provided with opening, opening is separated into mud import and sludge outlet by dividing plate, two rings shape filter screen is arranged on the two sides of inner ring bushing, the its inner circumference edge is connected with the inner ring bushing periphery, its neighboring was connected with week in the outer snare, thereby form ring-type filtration chamber around main shaft, scraper plate is installed with respect to the mode that the medial surface of screen cloth carries out the acute angle contact with its edge, it is characterized in that: the end of described scraper plate is arranged on the lining of outer ring and after can turning an angle with respect to the outer ring lining and fixes, and the gap of scraper plate and filter screen can be regulated in the end of rotating blade.

By above technical scheme as can be known: the end of scraper plate can be rotated with respect to the outer ring lining, can with the suitable yardstick of maintenance filter cake thin layer, thereby filter better according to different mud adjustment scraper plates and the gap between the screen cloth.

For solving the problems of the technologies described above, the utility model adopts following further technical scheme:

The outer ring lining is passed in the lower end of described scraper plate, and is locked by nut.Adopt this structure, only need turn nut just can be adjusted the gap between scraper plate and the screen cloth easily.

Described scraper plate is combined by scraper and handle two portions.Scraper plate changes scraper and handle two portions into by original monoblock type, and handle can select for use non-metallic material to make, and convenient and outer ring lining is connected and installed.

It is staggered anyhow latticed that described filter screen is.Filtering net makes latticed filtering net into by original a lot of apertures, has on the one hand strengthened filtration area, has increased resistance coefficient on the other hand, increases friction, makes break more dehydration and can drive the filter cake motion of mud.

Described sludge outlet is connected with discharging and takes over.The purpose that the discharging adapter is set is the length that prolongs discharge port, has promptly prolonged the length section of dewatered sludge, can prolong the residence time of mud in water extracter, helps stable the filtration, reduces filter cake moisture content.

In sum, the utility model is a kind of dewatering machine that is applied to sludge dewatering, its volume is little, in light weight, adopt full-enclosed structure, vibrate for a short time, noise is low, economize power, comparing with water extracter in the past, aspect floor space, deodorizing air quantity, weight and the power consumption obvious decline is being arranged all, is a kind of energy-saving sludge water extracter.

Description of drawings

Fig. 1 is a sectional view of the present utility model;

Fig. 2 is that the A-A of Fig. 1 is to sectional view;

Fig. 3 is the structural representation of scraper plate;

Fig. 4 is the sectional view of scraper.

Embodiment

Referring to Fig. 1 and Fig. 2, a kind of improved sludge dewatering equipment, comprise main shaft 1, inner ring bushing 2, outer ring lining 3, annular filter screen cloth 4, scraper plate 5, the motor (not shown) of shell 6 and drive main axis rotation, inner ring bushing 2 is fixed on around the main shaft 1 by pivot pin, outer ring lining 3 is arranged on the outside of inner ring bushing 2, and keep at a certain distance away with inner ring bushing 2, outer ring lining 3 is fixing with shell 6, outer ring lining 3 is provided with opening, opening is separated into mud import C and sludge outlet D by dividing plate 7, dividing plate 7 remain on approximate horizontal and with the orthogonal direction of the direction of principal axis of main shaft 1 on, the medial end of dividing plate 7 is consistent with the curvature of the periphery of inner ring bushing 2, form and its face sliding contact, two rings shape filter screen 4 is arranged on the two sides of inner ring bushing 2, annular filter screen cloth 4 inner periphery are connected with inner ring bushing 2 peripheries, annular filter screen cloth 4 neighborings were connected with week in the outer ring lining 3, thereby form the ring-type filtration chamber 8 around main shaft, scraper plate 5 is installed with respect to the mode that the medial surface of screen cloth carries out the acute angle contact with its edge.

The utility model is improvements over the prior art, and its improvements are: the end of scraper plate 5 is arranged on the outer ring lining 3 and after can turning an angle with respect to outer ring lining 3 and fixes, and the gap of scraper plate 5 and filter screen 4 can be regulated in the end of rotating blade 5.Outer ring lining 3 is passed in the lower end of scraper plate, and by nut 9 lockings, when needs rotating blade end, nut 9 can be unscrewed, and the gap of scraper plate 5 and filter screen 4 is adjusted in the rotating blade end, and then it is fixing with scraper plate 5 to screw nut 9.In order to strengthen filtration area, increase resistance coefficient, increase friction, make break more dehydration and can drive the filter cake motion of mud, filter screen 5 is staggered anyhow latticed by original a lot of apertures instead.

Sludge outlet D is connected with discharging and takes over 10, and the purpose that discharging adapter 10 is set is the length that prolongs discharge port, has promptly prolonged the length section of dewatered sludge, can prolong the residence time of mud in water extracter, helps stable the filtration, reduces filter cake moisture content.

Referring to Fig. 3, Fig. 4, scraper plate 5 is combined by scraper 11 and handle 12 two portions, and scraper plate 5 changes scraper 11 and handle 12 two portions into by original monoblock type, and handle 12 can select for use non-metallic material to make, and convenient and outer ring lining 3 is connected and installed.

Motor makes main shaft 1 rotation, mud is supplied with transmission continuously by pump and is passed through mud import C in filtration chamber 8, the initial stage of carrying out filters, filter screen 4 surfaces form cake layer gradually, thin cake layer can increase the capture rate of solids, make filtrate limpider, but the blocked up percent of pass that then influences filtrate, the filtration velocity that causes containing greatly in the mud water gaging (more than 80%) is too slow, and sieve aperture forms obstruction easily, rotating blade 5 is regulated scraper and suitable angle and the gap of screen cloth, with the suitable yardstick of maintenance filter cake thin layer, thereby filters better.In the process from the fillter section to the press dewatering, mud is concentrated, and is pushed to sludge outlet D direction by the revolving force of disk filter screen, and is dehydrated.At sludge outlet D, produce the discharge resistance by squeezing air controller, make and consider the pressure that indoor back pressure keeps certain limit, mud is carried out press dewatering.Dewatered cake in the press dewatering process is discharged from outside the machine after pushing the controller of sludge outlet D open, after filtrate is collected by the round sealed housing that is located at the periphery, filtration chamber, then outside filtrate outlet B discharge machine.

Claims (5)

1, a kind of improved sludge dewatering equipment, comprise main shaft (1), inner ring bushing (2), outer ring lining (3), annular filter screen cloth (4), scraper plate (5) and shell (6), inner ring bushing (2) is fixed on around the main shaft, outer ring lining (3) is arranged on the outside of inner ring bushing (2) and is fixed by shell (6), outer ring lining (3) is provided with opening, opening is separated into mud import (C) and sludge outlet (D) by dividing plate (7), two rings shape filter screen (4) is arranged on the two sides of inner ring bushing (2), the its inner circumference edge is connected with inner ring bushing (2) periphery, its neighboring was connected with week in the outer snare (3), thereby form the ring-type filtration chamber (8) that encloses main shaft, scraper plate (5) is installed with respect to the mode that the medial surface of screen cloth carries out the acute angle contact with its edge, it is characterized in that: the end of described scraper plate (5) is arranged on outer ring lining (3) and upward and after can turning an angle with respect to outer ring lining (3) fixes, and the gap of scraper plate (5) and filter screen (4) can be regulated in the end of rotating blade (5).

2, a kind of improved sludge dewatering equipment as claimed in claim 1, it is characterized in that: outer ring lining (3) is passed in the lower end of described scraper plate (5), and is locked by nut (9).

3, a kind of improved sludge dewatering equipment as claimed in claim 1 or 2 is characterized in that: described scraper plate (5) is combined by scraper (11) and handle (12) two portions.

4, a kind of improved sludge dewatering equipment as claimed in claim 1 or 2 is characterized in that: described filter screen (4) is staggered anyhow latticed.

5, a kind of improved sludge dewatering equipment as claimed in claim 1 or 2 is characterized in that: described sludge outlet (D) is connected with discharging and takes over (10).

Images