CN1806885A

CN1806885A - Cone laminated concentric ring bevel deposition device

Info

Publication number: CN1806885A
Application number: CN 200510048690
Authority: CN
Inventors: 景兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-15
Filing date: 2005-12-15
Publication date: 2006-07-26

Abstract

The invention relates a conical concentric ring inclined surface settlement device. The settling zone is made by hemipyramid, and the horizontal section of settling zone is larger and larger from underside to upside to reduce the water ascending velocity and extend the areas contacted by water. Accompanying diagram is profile chart of settling zone. The Reynolds number is lower and lower, and the settling zone area contacted by water is larger and larger, so the settling effect of suspended matter is stronger and settling efficiency is higher than common tipping plate or inclined tube precipitating tank. If the conditioning water content is the same at the unit time, the device has smaller volume and easier erection, and used for round precipitating tank and apparatus.

Description

Cone laminated concentric ring bevel deposition device

Technical field the present invention relates to a kind ofly stack the annular slope settler of forming with one heart by cone, belongs to a kind of water treatment facilities.

In the present existing technology of background technology, swash plate and Inclined-tube Settling Technology all are based on " shallow-layer theory ", by inclined paralled plates or inclined tube increase desilting area are installed in sedimentation basin, reduce reynolds number Re and improve sedimentation effect.Compare with vertical sedimentation tank with horizontal sedimentation tank, the effect of sloping plate deposition and tube settling improves a lot, but also has following weak point:

1, inhalant region is identical to the flow velocity in all swash plate districts of exhalant region or inclined tube district, and Reynolds number is identical.Along with the rising of current, most suspended substances precipitates gradually in the water, and the remaining suspension substrate concentration reduces, and sedimentation effect descends gradually, and residual suspension also needs further to precipitate by the settling section of a high about 1500mm in the settling zone water outlet.For further strengthening the effect of swash plate and tube settling, can shorten the distance between swash plate and dwindle inclined tube inscribe diameter of a circle and further reduce Reynolds number, increase desilting area, but too small distance between plates from or inscribed circle diameter not only can increase material use amount and difficulty of processing, also can cause susceptible to plugging phenomenon.Inclined tube stops up especially easily, so seldom be used for sewage disposal.

2, existing swash plate and inclined tube can only processing and manufacturing squarely or rectangular configuration, mainly are applicable to square or the rectangle sedimentation basin, are not suitable for circular settling tank or settling apparatus and use, and limited its scope of application.

3, swash plate and tube settling district around need to seal specially, anti-sealing forms short stream on pool wall, thereby has increased manufacturing and mounting hardness and cost.

Summary of the invention task of the present invention provides that a kind of deposition efficiency is higher, volume is littler, make and install simply, is particularly useful for the cone laminated concentric ring bevel deposition device of circular settling tank.

A kind of swash plate or tube settling device comprise water inlet buffering area [1], settling zone [2], settling section [4], discharging device [5], water feed apparatus [6] and a mud discharging device [7].Described cone laminated concentric ring bevel deposition device is characterised in that the settling zone is made of the cone inclined-plane that amplifies with one heart successively, lower section is in respectively on the horizontal plane on each cone, the center is a complete cone, other is the hemicone that removes the top, the outermost layer cone promptly is the bevel deposition district, is again the sealed wall of whole settling zone.After water enters the settling zone, be 360 ° of γ annulars and amplify rising in any lattice settling zone, upflow velocity descends gradually, and the desilting area that water contacted increases gradually.The settling section of described device is a cylinder of increasing on the outermost layer cone.The water-out manners of described device promptly can be to come together in water outlet behind the conical inner body earlier, also can be from the peripheral weir water outlet.Because it is big more to descend the closer to the Reynolds number of the settling zone at center, sedimentation effect is good more, so during the water-out manners of the center of selection, the water outlet of periphery settling zone can obtain the more sedimentation time in the process that the center of circle is compiled, so the center water-out manners is even more ideal.

Because the annular settling zone horizontal sectional area that each cone inclined-plane constitutes increases from lower to upper gradually, the upflow velocity V of water descends gradually.Computing formula Re=V*Dd/ γ according to Reynolds number, as calculated, the equivalent diameter Dd of whole exhalant region horizontal section equals the equivalent diameter Dd (Dd=4*S/N of whole inhalant region horizontal section, wherein S is a cross-sectional area, N is total wetted perimeter girth of this section water), because the work viscosity γ of water is constant, so ratio R e (going out)/Re (advancing)=V (going out)/V (advancing)=S (advancing)/S (going out)=R/ (R+2M) of delivery port Re (going out) and water inlet Re (advancing), wherein R is an outermost layer cone water inlet diameter, M is diameter (the M=2Lcos α of conical inner body, wherein L is the length on cone inclined-plane, when α equals 60 °, M=L).Because R＞0, M＞0, so R＜(R+2M), so R/ (R+2M)＜1, promptly the Reynolds number perseverance of cone settling zone water outlet section is less than the Reynolds number of water inlet section, and the R value is more little, then the Reynolds number range of decrease is big more.According to " shallow-layer theory ", the Reynolds number of fluid is more little, the desilting area that fluid contacted is big more, then its deposition efficiency is high more, therefore, equate at the water inlet cross-sectional area, under the identical condition of swash plate spacing, the deposition efficiency of described device is higher than common inclined-plate clarifying basin, the settling zone effluent quality is better than the water outlet of common inclined-plate clarifying basin, handles under the identical condition of the water yield in the unit interval, and the volume of described device can be less than common inclined-plate clarifying basin, the manufacturing installation difficulty of described device is lower than swash plate or tube settling device, and particularly seal construction is simpler.Mud in the process that the cone inclined-plane glides, except that the accumulation that produces vertical direction, the sedimentation that also produces the circumference horizontal direction, so downslide better effects if of mud, be difficult for producing clogging, can be used for high-concentration sewage and handle, be particularly suitable for circular settling tank and circular settling apparatus.Because cone bevel deposition district adopts detachable lifting fixed form, maintains easily management.

Appended drawings 1 is the profile of described device, and wherein 1 is the water inlet buffering area, and 2 is cone bevel deposition district, and 3 is the center cone tagma, and 4 is settling section, and 5 is discharging device, and 6 is water feed apparatus, and 7 is mud discharging device.R is an outermost layer cone water inlet diameter, the buffering area diameter of also promptly intaking, α is the inclination angle of cone inclined-plane and horizontal plane, L is the length on cone inclined-plane, ρ is a horizontal range between the cone inclined-plane, and M is the conical inner body back cut diameter, and H1 is water inlet buffering area height, H2 is a cone bevel deposition district vertical height, and H3 is the settling section height.Accompanying drawing 2 is described device vertical view, and each cone constitutes concentric circles, and radial line is a mast-up.

The water intake mode of the described device of specific implementation method is identical with common swash plate and tube settler with the interior mud mode of row.Elder generation determines the technical parameter of device according to required processing water yield Q and raw water quality.Upflow velocity V is at 3m/hr-5m/hr, the cone inclination alpha is at 45 °-70 °, cone chamfer length L is between 800mm-1200mm, horizontal range ρ is between 6mm-10mm between cone, water inlet buffering area height H 1 is between 1200mm-1500mm, cone bevel deposition district vertical height H2 is between 700mm-1000mm, and settling section height H 3 is between 500mm-800mm.Water inlet buffering area S=Q/V=R*R* π/4, required cone quantity=R/2 ρ, conical inner body diameter M=2L*COS α can calculate the upper and lower opening diameter of required each cone according to this respectively.Whole earlier main body periphery of making the processing settler, be about to the buffering area of intaking, outermost layer cone and settling section manufacture an integral body, water inlet and mud discharging device are installed in buffering area, the buffering area circle centre position is installed a conical inner body support column, the support column top is installed a bocca and is used for the centre of support cone, each cone that to make is in advance then put into the pond, be suspended on outermost layer cone inwall, radial mast-up is fixed on the depositing reservoir pool wall, be fixed on each cone on the mast-up successively at last, detection is also proofreaied and correct each fixing point, guarantees that each cone is on the same horizontal plane.Get α=60 ° under the normal condition, L=1000mm, then M=L=1000mm can make each cone model with the semicircle mode.

The manufacturing processing mode and the material therefor of described each parts of device are not limit, but must guarantee that material therefor has enough mechanical strengths, and be nontoxic, corrosion-resistant, smooth surface.

Claims

1. cone laminated concentric ring bevel deposition device that is used for Separation of Solid and Liquid, this device comprises a water inlet buffering area [1], settling zone [2], settling section [4], discharging device [5], water feed apparatus [6], and mud discharging device [7], it is characterized in that the settling zone is made of the cone annular slope that amplifies with one heart successively, each cone section up and down is in respectively on the horizontal plane, and the center is a complete cone, other cone is to remove the hemicone at top, the outermost layer cone promptly is the precipitation inclined-plane, is again the sealing periphery of whole settling zone, after water enters the settling zone, in any one settling zone, be 360 ° of annulars and amplify rising, upflow velocity descends gradually, and the desilting area that water contacted increases gradually, and the sedimentation effect of suspension is strengthened gradually in the water.

2. according to right 1 described device, the fixing means that it is characterized in that each cone is that it is lifted on the depositing reservoir pool wall, and a support column is arranged under the conical inner body.

3. according to right 1 described device, it is characterized in that water-out manners can select conical inner body water outlet or peripheral effluent, the sedimentation effect of center water outlet is better.

4. the device of narrating according to right 1 is characterized in that the cone chamfer length between 600mm-1200mm, and the inclination angle is between 45-70, and the horizontal range between the cone inclined-plane is between 5mm-12mm.

5. according to right 1 described device, the manufacturing rapidoprint of its each parts is not limit, but requires that enough mechanical strengths are arranged, and is nontoxic, corrosion-resistant, smooth surface.