CN101830623A

CN101830623A - Extrusion dewaterer

Info

Publication number: CN101830623A
Application number: CN 201010165295
Authority: CN
Inventors: 王建强; 谭宗强; 王峰; 吴树武
Original assignee: JIANGSU SINUO ENVIRONMENTAL PROTECTION MACHINERY TECHNOLOGY Co Ltd
Current assignee: JIANGSU SINUO ENVIRONMENTAL PROTECTION MACHINERY TECHNOLOGY Co Ltd
Priority date: 2010-05-07
Filing date: 2010-05-07
Publication date: 2010-09-15

Abstract

The invention discloses an extrusion dewaterer, which comprises a slantly-arranged tunnel screw extruder, wherein the tunnel screw extruder comprises a tunnel, a screw extrusion shaft arranged in a tunnel and blades of the screw extrusion shaft; the lower end of the screw extruder is provided with a sludge inlet, while the higher end is provided with a sludge outlet; and a water tank is arranged below the screw extruder, and is communicated with the screw extruder through a water-falling hole at the bottom of the tunnel. The tunnel screw extruder is provided with a plurality of sets of mutually-matched fixed rings and moving rings, wherein the fixing rings are fixed on the inner wall of the tunnel, a moving ring is arranged in a clearance between each two fixed rings, a clearance is formed between the internal circumferential surfaces of the fixed rings and the moving rings and the blades of the screw extrusion shaft, and axial clearances between the fixed rings and moving rings gradually decrease from the sludge inlet to the sludge outlet. The extrusion dewaterer has the advantages of simple structure, simple and convenient operation, and high solid-liquid separation rate, and avoids the problem of blocking skillfully.

Description

A kind of extrusion dewaterer

Technical field

The present invention relates to a kind of environmental protection equipment, specifically is a kind of extrusion dewaterer, and it is visual plant in the dewatering technology of mud, and effect is that oil-containing, sewage containing methanol mud after the flocculation are carried out solid-liquid separation.

Background technology

At present, at oil, oil-containing that gas field development produced, contain in the pure sewage of low concentration mud, also there is not equipment from sludge water, mud to be separated.Be originally that the oil-containing that produces, sewage containing methanol mud are moved sludge sump to car in oil recovery, gas and oily(waste)water concentration technology, sewage mud in the sludge sump is by sun natural drying, water, methyl alcohol and condensate oil in the evaporation mud behind the evaporation airing, are transported mud the postpone burning or are buried ground with car again.This processing mode is contaminate environment not only, and processing efficiency is low, and methyl alcohol and condensate oil can not be recycled.

For this reason, the applicant has proposed a kind of novel method for sludge treatment, at first sewage mud is added coagulating agent and mix stirring, make medicament and sewage mud obtain the thorough mixing reaction, enter afterwards in the flocculation reactor and react with organic floculant, by forcing machine sewage mud is carried out solid-liquid separation at last, the solid outward transport is handled or is burned, and the oil of separating, water, methyl alcohol etc. enter oily water separation and extraction system is extracted.Wherein the solid-liquid separation rate is related to the height of final organic efficiency, what the tradition solid-liquid separation process adopted is filter cloth and centrifuging mode, extruser has also appearred in the relevant industries at present, but existing extruser mainly utilizes the steric compression solidliquid mixture that diminishes gradually between Variable pitch screw and the runner, along with fluid loss, the solids compression, latch up phenomenon very easily appears, for this reason, it is too little that space between Variable pitch screw and the runner can not be done, and bigger space can influence solid-liquid separation efficiency conversely.

Summary of the invention

Technical problem to be solved by this invention provides a kind of solid-liquid separation efficiency and the extrusion dewaterer of latch up phenomenon can not occur.

A kind of extrusion dewaterer of the present invention, it comprises the tunnel like extruser that is obliquely installed, described tunnel like extruser comprises the tunnel, is installed in screw extruding shaft and blade thereof in the tunnel; The low end of extruser is provided with the mud inlet, and a higher end is provided with mud mouth, is provided with water tank below extruser, and water tank and extruser are communicated with by the water falling hole that is located at tunnel bottom.

As improvement of the present invention, on described tunnel like extruser, be provided with the some groups of set collars that mate mutually and the ring that moves about, wherein set collar is fixed on the tunnel inwall, the ring that moves about is installed in the gap between per two set collars, have the gap between the inner peripheral surface of the set collar and the ring that moves about and the screw extruding shaft blade, set collar and the end play of moving about between the ring are diminished to the mud mouth direction gradually by the mud inlet.The screw extruding shaft pitch of described tunnel like extruser is diminished to the mud mouth direction gradually by the mud inlet.The mud mouth inboard of tunnel like extruser also is provided with by pressing plate.

Be back to water tank for the ease of extruding liquid, the inclination angle of tunnel like extruser is preferably 15～20 °.

Beneficial effect of the present invention:

1, it is simple in structure, easy and simple to handle, and volume is little, automatic degree height, and maintenance workload is few, convenient management, energy consumption is low, and running cost is few.

2, the present invention is added with the ring that moves about by the set collar of mutual coupling is set and the ring that moves about in the tunnel like extruser in the middle of per two fixed ring pieces, and the internal diameter of the ring plate of moving about is bigger 2 than the external diameter of screw extruding shaft blade.The tunnel like extruser divides enriching section and dewatering period two portions, mud cake outlet from the sewage import of enriching section to dewatering period, the pitch of screw extruding shaft diminishes gradually, fixed ring piece and the gap of moving about between the ring plate also diminish gradually, under action of gravity, water is from what relatively move, and ring plate leaches in the gap, realizes concentrating fast.And since the forcing machine volume do very little, the solid-liquid separation rate is higher.

3, the set collar and the ring that moves about have also solved blockage problem, and promptly along with the rotation of screw extruding shaft, the ring that promotes to move about constantly rotates, and equipment relies on set collar and the mobile realization continuous self-cleaning that moves about between the ring is washed process, thereby has avoided blockage problem dexterously.

Description of drawings

Fig. 1 is a structure iron of the present invention.

Fig. 2 is the structural representation of set collar among Fig. 1,

Fig. 3 is the structural representation of Fig. 1 middle reaches rotating ring.

Embodiment

As Fig. 1, extrusion dewaterer comprises the tunnel like extruser 1 that is obliquely installed, and extruser 1 low end is provided with mud inlet 2, and a higher end is provided with mud mouth 3, be provided with water tank 4 below extruser 1, water tank 4 and extruser 1 are communicated with by the water falling hole 5 that is located at tunnel bottom.The tunnel inwall of tunnel like extruser 51 is provided with some groups of set collars that mate mutually 6 and the ring 7 that moves about, and set collar 6 and the end play of moving about between the ring 7 are diminished to the mud mouth direction gradually by the mud inlet.Screw extruding shaft pitch is also diminished to the mud mouth direction gradually by the mud inlet simultaneously.Be provided with by pressing plate in mud mouth 3 inboards.

As shown in Figures 2 and 3, set collar 6 is fixed by four axles that are installed on the tunnel inwall, between per two set collars, be added with a set-up piece 8 respectively four shaft connection places, the ring 7 that moves about is installed between four set-up pieces that four angles of set collar install, and the ring that moves about so can not wander off and be stuck.

Set-up piece 8 is thicker than moving about ring plate, and the internal diameter of the ring plate of moving about is bigger 2 than the external diameter of screw extruding shaft blade.Extruser integral body can be divided into enriching section and dewatering period two portions, mud mouth from the sewage import of enriching section to dewatering period, the pitch of screw extruding shaft diminishes gradually, fixed ring piece and the gap of moving about between the ring plate also diminish gradually, and wherein the set-up piece of dewatering period is than the set-up piece of enriching section thick 10～20.Under action of gravity, water leaches from the ring plate gap that relatively moves, and solids then constantly is compressed at the volley, realizes concentrating fast.The sludge outlet place is provided with the back pressure plate, with the pressure in the adjusting screw chamber.The extrusion sludge dewatering device is finished concentrated being operated in one with press dewatering of mud, has replaced traditional filter cloth and centrifugal filter type with the delicate filter bulk-mode of uniqueness.

The screw-blade of screw extruding shaft has certain angle on the circumference of extruding axle, rotation along with screw extruding shaft, the promotion ring plate of moving about is constantly rotated, and equipment relies on set collar and the mobile realization continuous self-cleaning that moves about between the ring is washed process, thereby has avoided blockage problem dexterously.

Claims

1. an extrusion dewaterer is characterized in that comprising the tunnel like extruser (1) that is obliquely installed, and described tunnel like extruser (1) comprises the tunnel, is installed in screw extruding shaft and blade thereof in the tunnel; The low end of extruser (1) is provided with mud inlet (2), and a higher end is provided with mud mouth (3), is provided with water tank (4) in extruser (1) below, and water tank (4) and extruser (1) are communicated with by the water falling hole (5) that is located at tunnel bottom.

2. extrusion dewaterer according to claim 1, it is characterized in that described tunnel like extruser (51) is provided with the some groups of set collars that mate mutually (6) and the ring (7) that moves about, wherein set collar (6) is fixed on the tunnel inwall, the ring (7) that moves about is installed in the gap between per two set collars (6), have the gap between the inner peripheral surface of the set collar (6) and the ring (7) that moves about and the screw extruding shaft blade, set collar (6) and the end play of moving about between the ring (7) are diminished to the mud mouth direction gradually by the mud inlet.

3. extrusion dewaterer according to claim 2, it is characterized in that set collar (6) fixed by four axles that are installed on the tunnel inwall, between per two set collars, be added with a set-up piece (8) respectively four shaft connection places, set-up piece (8) is slightly thicker than the ring plate of moving about.

4. according to claim 1,2 or 3 described extrusion dewaterers, it is characterized in that the screw extruding shaft pitch of described tunnel like extruser (1) is diminished to the mud mouth direction gradually by the mud inlet.

5. according to claim 1,2 or 3 described extrusion dewaterers, it is characterized in that mud mouth (3) inboard of described tunnel like extruser is provided with by pressing plate.

6. according to claim 1,2 or 3 described extrusion dewaterers, the inclination angle that it is characterized in that tunnel like extruser (1) is 15～20 °.