CN111632409B - Venturi inner member for sedimentation tank - Google Patents
Venturi inner member for sedimentation tank Download PDFInfo
- Publication number
- CN111632409B CN111632409B CN202010398003.0A CN202010398003A CN111632409B CN 111632409 B CN111632409 B CN 111632409B CN 202010398003 A CN202010398003 A CN 202010398003A CN 111632409 B CN111632409 B CN 111632409B
- Authority
- CN
- China
- Prior art keywords
- venturi
- water
- throat
- tube
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004062 sedimentation Methods 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 129
- 239000010802 sludge Substances 0.000 claims abstract description 73
- 239000002245 particle Substances 0.000 claims abstract description 47
- 238000004140 cleaning Methods 0.000 claims description 24
- 238000005192 partition Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000009792 diffusion process Methods 0.000 claims description 7
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 238000009987 spinning Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 5
- 238000000034 method Methods 0.000 abstract description 9
- 239000013618 particulate matter Substances 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000005345 coagulation Methods 0.000 abstract description 5
- 230000015271 coagulation Effects 0.000 abstract description 5
- 239000010419 fine particle Substances 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 10
- 238000007599 discharging Methods 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0006—Settling tanks provided with means for cleaning and maintenance
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sewage (AREA)
Abstract
The invention relates to a Venturi inner component for a sedimentation tank, which promotes the coagulation and growth of particulate matter impurities in water flow through jet flow mixing, and then introduces the grown particulate matter into a sludge channel at the outer side at the tail end of a Venturi tube by means of a rotational flow ring and discharges the particulate matter into a sludge collecting area; in the process, the treatment and the flow of raw water and the sedimentation and the drainage of particles respectively occur in two relatively independent spaces of a Venturi tube and a sludge channel, and no interference exists between the two spaces; the flow state in the inner member is not limited by laminar flow and is mainly in a strong turbulent flow state, so that the water treatment flow is large; the strong turbulent flow state is not beneficial to the generation and the attachment of a biological film, and the running state of the equipment can be kept stable for a long time; through the cooperative configuration of the swirl ring and the inscribed direction of the through hole at the throat, most of particulate matters, especially large particulate matters, entering the sludge channel can actively avoid the through hole, or slide from the surface of the through hole by means of swirl inertia, so that the particulate matters can be prevented from entering the throat again along with water flow through the through hole; the fine particles with the particle size not growing up are allowed to enter the throat again to participate in a new coagulation and growth process; meanwhile, the through hole at the throat is not easy to be blocked, and the operation maintenance period of the equipment is prolonged.
Description
Technical Field
The invention relates to sewage treatment equipment, in particular to a venturi inner member for a sedimentation tank.
Background
Sedimentation treatment is an important link of a sewage treatment process, and compared with filtration treatment, the sedimentation treatment has the obvious advantages of large treatment capacity, low cost, no blockage problem, continuous operation and the like in the aspect of removing particles in water; therefore, the method is widely applied in the field of sewage treatment. In the prior art, to improve the precipitation efficiency of a precipitation tank, internal components such as an inclined plate or an inclined pipe are generally arranged in the precipitation tank by utilizing a shallow layer precipitation theory so as to shorten the precipitation distance of particulate matters. However, such internals, while reducing the settling distance of the particles, are highly susceptible to turbulence in the fluid within the pipe or between the plates, resulting in a reduction in the settling efficiency of the particles, and thus limiting the fluid flow rate to a smaller range; it is generally required that the liquid flow be in a laminar state within the tubes or plates to prevent turbulence to the particles. While the laminar flow state is substantially beneficial to the formation of flocculent biological membranes, although the biological membranes are widely used for removing organic pollutants in water treatment, the biological membranes appearing in the flow channels of the inclined pipes or the inclined plates can greatly reduce the flow space in the pipes and seriously hinder the sedimentation and the transfer of particles to the bottom of the pool. In addition, because the inclined pipe or the inclined plate inner member generally has a smaller flow passage size, the flow passage is often blocked in practical use, so that frequent shutdown and renovation are caused; in addition, impurities blocked in the narrow channel are not easy to remove in the cleaning process, and even the inner components of the assembled inclined tube or inclined plate need to be disassembled and cleaned. This greatly hinders the practical value of such internals.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a Venturi inner component for a sedimentation tank, the efficient sedimentation tank disclosed by the invention allows the sedimentation separation of particles to be carried out in a high-flow-rate turbulent flow state, has larger unit volume treatment capacity compared with the traditional sedimentation mode, and is beneficial to realizing the miniaturization of the sedimentation tank; meanwhile, the efficient sedimentation tank can be automatically cleaned in the operation process, the blockage phenomenon cannot occur, and the long-term continuous operation of the sedimentation tank is facilitated.
In order to achieve the above purpose, the present invention specifically provides the following scheme: a venturi inner 10 for a sedimentation tank, the venturi inner 10 comprising a housing and a venturi tube 14 located within the housing; the outer shell comprises a lower shell tube 11 with a larger diameter positioned at the lower part, an upper shell tube 12 with a smaller diameter positioned at the upper part and a truncated cone-shaped connecting shell 13 connecting the lower shell tube 11 and the upper shell tube 12; the venturi tube 14 is located in the space formed by the lower shell tube 11 and the connecting shell 13, and the end of the diffuser tube at the top thereof is connected to the lower end of the upper shell tube 12 through a swirl ring 15; the Venturi tube 14, the lower shell tube 11, the upper shell tube 12, the connecting shell 13 and the swirl ring 15 are concentrically arranged; the venturi tube 14 has a throat 16 and a water inlet 18 at the bottom for inflow of raw water; an annular sludge channel 17 is formed between the outer wall of the Venturi tube 14 and the inner wall of the lower shell tube 11.
The sedimentation tank comprises a tank body 1, a vertical partition plate 4 is arranged inside the tank body 1, and the partition plate 4 divides the inside of the tank body 1 into a water inlet cavity 3 and a sedimentation cavity 7; a water inlet unit is arranged on the side wall of the water inlet cavity 3; the bottom of the partition plate 4 is provided with a plurality of water diversion ports 5 which are arranged at intervals; a sealing plate 8 is arranged in the sedimentation cavity 7 and positioned above the top end of the water diversion port 5 to divide the sedimentation cavity 7 into a clear water area at the upper part and a raw water area at the bottom part; at least one part of the water diversion port 5 is communicated with the raw water area of the sedimentation cavity 7 and is used for providing a water passing gap for the raw water to enter the raw water area from the water inlet cavity 3.
The sealing plate 8 is provided with a plurality of mounting holes 9 which are arranged in an array; the bottom of the venturi inner 10 is mounted on the side of the mounting hole 9 above the closing plate 8.
The raw water area is provided with a distribution channel 28 for distributing raw water to the bottom of the venturi inner members 10 and a sludge collection area 27 arranged between two adjacent distribution channels 28 at intervals; the venturi inner 10 can receive raw water from the distribution channel 28, promote the fine particles in the water to agglomerate and grow, and then discharge the grown particles into the sludge collection area 27. The bottom of the partition board 4 and the part between two adjacent water diversion ports 5 close the end part of the mud collecting area 27.
Preferably, the distribution channel 28 is an open structure, and the mud collection area 27 is a closed structure. Specifically, the bottom in the sedimentation cavity 7 is provided with the same number of separation stacks 6 as the water inlets 5; each separating stack 6 is arranged in parallel, one end of each separating stack is clamped at the lower part of the water diversion port 5, and the water passing gap is formed between the top of each separating stack 6 and the upper part of the water diversion port 5; the top of said compartment 6 forms a distribution channel 28 of raw water, which distribution channel 28 has an open structure; a sludge collection zone 27 is formed between adjacent stacks 6, and the sludge collection zone 27 is a closed structure; the closed structure may be, for example, a tube having separate sidewalls, such as a round tube, a square tube, etc., disposed between two adjacent stacks 6; or may be a tubular passage, such as a tubular passage in the shape of an inverted trapezoid or rectangle (not shown), which is enclosed by the cover plate 29 disposed on the upper portion of the side wall of two adjacent compartments 6 and the side wall of the two adjacent compartments 6.
Wherein the bottom of each mounting hole 9 is connected with two opposite mud discharging slideways 19; the mud discharging slideway 19 has an arched tile-shaped structure and comprises an outer arch plate 20 and an inner arch plate 21 which are arranged in parallel and arched outwards, and two side plates 22 for connecting the side edges of the inner arch plate and the outer arch plate; the inner arch plate 20, the outer arch plate 21 and the two side plates 22 enclose a sandwich channel of the mud discharge slideway 19; the interlayer channel is provided with an inlet 23 which is positioned at the upper end of the mud discharging slide way 19 and is used for being communicated with the mud channel 17 of the Venturi inner member 10, and an outlet 24 which is positioned at the lower end of the mud discharging slide way 19 and extends into the mud collecting area 27; the inlets 23 of the two sludge discharge chutes 19 which are opposite to each other are combined to form a complete circular ring-shaped inlet which just covers the sludge channel 17; the two side plates 22 on the same side of the two opposite sludge discharge chutes 19 are gradually far away from top to bottom, so that the outlets 24 of the two opposite sludge discharge chutes 19 cannot form a complete circle, and the distribution channel 28 is partially limited by the side plates 22 of the two sludge discharge chutes 19.
Wherein the upper surface of the sludge collecting area 27 is provided with an arc-shaped groove corresponding to the outlet 24 of the sludge discharge chute 19; the outlet 24 of the sludge discharge chute 19 is in sealing fit with the arc-shaped groove, so that raw water in a raw water area is prevented from directly entering a sludge collection area 27.
Alternatively, the distribution channel 28 is a closed tubular structure with independent side walls, and one end of the distribution channel is directly connected with the water diversion port 5 in a sealing way; an open sludge collecting area 27 is formed between two adjacent closed channels 28.
The vertical dimension (which can be understood as height) of the distribution channel 28 in the length direction thereof is gradually reduced to offset the pressure drop upstream and downstream in the distribution channel 28 caused by the diversion of the raw water into the plurality of venturi inner members 10 when the raw water flows along the length direction thereof; thereby allowing the raw water to maintain substantially the same pressure when entering the inlets of the venturi inner 10 at different positions.
The upper surface of the distribution channel 28 is provided with a plurality of connecting pipes 30 correspondingly connected with the inlets of the venturi inner member 10; the connecting tube 30 has a varying height along the length of the distribution channel 28 to match the vertical dimension variation of the distribution channel 28 in the length direction.
The mounting hole 9 and the connecting pipe 30 are concentrically arranged, and the diameter of the mounting hole 9 is larger than that of the connecting pipe 30, so that a sludge discharge annular gap is formed between the mounting hole 9 and the connecting pipe 30, and the venturi inner member 10 is allowed to discharge sludge into the sludge collection area 27 through the sludge discharge annular gap.
The water inlet unit can be a water inlet hole 2 arranged on the side wall of the water inlet cavity 3 and/or a water inlet overflow groove arranged on the side wall of the water inlet cavity 3 parallel to the partition plate 4.
The side wall of the rotational flow ring 15 is provided with internally tangent (tangent with the inner annular wall) start-up ports 25 which are uniformly distributed along the circumference; preferably, the screwing-on opening 25 is long-strip-shaped; which allows a flow of water with a higher pressure and agglomerated growing particles to flow to the end of the diffuser pipe of the venturi tube 14 into the annular sludge channel 17, which is depressurized by injection at the throat 16.
The throat 16 of the venturi tube 14 is provided with through holes 26 in an array shape uniformly distributed along the circumferential wall thereof, and is used for sucking water flow from the sludge channel 17 and forming a relatively low pressure environment in the sludge channel 17, so that the water flow containing particles is allowed to enter the sludge channel 17 through the swirling port 25 at the tail end of the venturi tube 14; at the same time, the through holes 26 can prevent large particulate matters in the sludge channel 17 from entering the inside of the throat 16 again.
In particular, the through holes 26 have a small pore size, which prevents large particulate matter in the sludge channel 17 from re-entering the interior of the throat 16 by filtration. The outer side surface of the throat pipe 16 is provided with a cleaning component which can rotate by means of hydraulic flushing and is used for automatically cleaning particles attached to the outer surface of the throat pipe 16 and avoiding the blockage of the through hole 26.
The cleaning component comprises an impeller frame 31 rotatably arranged at one end of the outer surface of the throat pipe 16, a cleaning part 32 longitudinally arranged on the impeller frame 31 and at least covering the opening area of the throat pipe 16, and fan blades 33 which are connected with the upper end and the lower end of two adjacent cleaning parts and are obliquely arranged. The cleaning portion 32 may be a brush or a blade. The water in the sludge channel 17 flows into the throat 16 under the suction action of the throat 16, so as to impact the fan blades 33, drive the impeller frame 31 to rotate, further drive the cleaning part 32 to clean the outer surface of the throat 16, and prevent the through hole 26 from being blocked.
Alternatively, the through-hole 26 has an arrangement that is inscribed in the same direction as the swirl port 25, which prevents large particulate matter in the sludge channel 17 from re-entering the interior of the throat 16 by the swirl inertia of the large particulate sludge. When muddy water containing sludge particles entering the sludge channel 17 through the swirling opening 25 reaches the throat 16, most of the particles are thrown to the outer side wall of the sludge channel 17 due to centrifugal force, part of the particles still flowing against the outer side wall of the throat 16 slide through the outer side of the through hole 26 due to the same swirling direction as the inner tangent direction of the through hole 26, the swirling inertia of the particles separates most of the particles flowing through the through hole 26 from the water body where the particles are located, so that water flow enters the throat from the through hole 26 due to the suction effect of the throat 16, and the particles slide through the outer side of the through hole 26 under the rotation inertia effect of the particles. The larger the size of the particulate matter is, the more obvious the effect of the separation effect is, and part of the particulate matter with smaller size may enter the interior of the throat 16 again due to the washing of the water flow, but the part of the particulate matter with smaller size may participate in the processes of collision and growth among the particles in the throat 16 again, and then finally become large particles to be separated. In order to ensure the separation effect of the particles and the water body, the water flow entering the clear water area can partially flow back to the water inlet cavity 3 or the original water area to participate in the coagulation, growth and separation processes of the particles again so as to further reduce the content of the particles in the water flow.
The tail end of the diffusion tube of the venturi tube 14 is also provided with an inverted (the conical surface of the diffusion tube is the water-facing side) swirling cone 34, the bottom surface of the swirling cone 34 is at least not lower than the upper edge of the swirling ring 15, the cone tip of the swirling cone is not higher than the lower edge of the swirling ring 15, the conical surface of the swirling cone 34 is provided with a bulge or a fin for forcing the swirling of the water body, and the direction of the swirling of the water body caused by the bulge or the fin is the same as the direction of the swirling of the water body caused by the swirling opening 25; the swirl cone 34 can greatly increase the proportion of the particles in the diffuser pipe entering the sludge channel 17.
Preferably, a rotational flow sheet 35 for forcing the rotational flow of the water body is arranged on the inner wall of the diffusion pipe of the venturi tube 14, and the direction of the rotational flow of the water body caused by the rotational flow sheet 35 is the same as the direction of the rotational flow of the water body caused by the protrusion or the wing.
Compared with the prior art, the invention can at least obtain the following beneficial effects: the invention adopts the jet mixing action of the venturi inner member with the sandwich structure to promote the coagulation and growth of particles in water flow, and then introduces the grown particles into the sludge channel at the outer side at the tail end of the venturi tube by means of a rotational flow ring and the like and discharges the particles into a sludge collecting area; in the process, the treatment and the flow of raw water and the sedimentation and the drainage of particles respectively occur in two relatively independent spaces in the Venturi tube and the sludge channel, and no interference exists between the two spaces; the flowing state in the inner member is not limited by laminar flow and is mainly in a strong turbulent flow state, so that the water treatment flow is large; the strong turbulent flow state is not beneficial to the generation and the attachment of a biological membrane, and the running state of the equipment can be kept stable for a long time; the outside of the throat pipe is provided with a cleaning component which can automatically rotate by means of hydraulic flushing, the outer surface of the throat pipe is continuously cleaned, the through hole is prevented from being blocked, most of particulate matters, especially large particulate matters, entering a sludge channel can actively avoid the through hole through the cooperative configuration of the rotational flow ring and the inscribing direction of the through hole at the throat pipe, or the particulate matters slide from the surface of the through hole by means of rotational flow inertia, and are prevented from entering the inside of the throat pipe again along with the water flow through the through hole; the fine particles with the particle size not growing up are allowed to enter the throat again to participate in a new coagulation and growth process; meanwhile, the through hole at the throat pipe is not easy to block, and the operation maintenance period of the equipment is prolonged.
Drawings
FIG. 1 is a longitudinal cross-sectional view of the venturi inner member;
FIG. 2 is a schematic view of a venturi inner member having a swirl cone;
FIG. 3 is a schematic view of the venturi inner member with a swirler;
FIG. 4 is a venturi inner member having both a swirl cone and a swirl plate;
FIG. 5 is a settling pond configuration in which a venturi inner member may be installed;
FIG. 6 is a schematic view of a mud discharge chute;
FIG. 7 is a schematic view of the installation of a closed sludge collection zone with independent side walls in a settling tank;
FIG. 8 is a schematic view of the installation of a closed sludge collection zone with a cover plate in a settling tank;
FIG. 9 is a schematic view of a settling tank employing a closed distribution channel;
FIG. 10 is a schematic view of a swirl ring;
FIG. 11 is a schematic view of the throat and large particles sliding through the through-hole on its outside by rotational inertia;
FIG. 12 is a schematic view of the combination of the cleaning assembly and the throat;
fig. 13 is a top view of fig. 12.
In the figure: the device comprises a tank body 1, a water inlet hole 2, a water inlet cavity 3, a partition plate 4, a water leading port 5, a separating stack 6, a settling cavity 7, a closing plate 8, a mounting hole 9, a venturi inner member 10, a lower casing pipe 11, an upper casing pipe 12, a connecting casing 13, a venturi pipe 14, a cyclone ring 15, a throat pipe 16, a sludge channel 17, a water inlet 18, a sludge discharge slideway 19, an outer arch plate 20, an inner arch plate 21, a side plate 22, a side plate 23, an inlet 24, an outlet 24, a turning opening 25, a through hole 26, a sludge collecting area 27, a distribution channel 28, a cover plate 29, a connecting pipe 30, an impeller frame 31, a cleaning part 32, fan blades 33, a cyclone cone 34 and a cyclone sheet 35.
Detailed Description
To better illustrate the concept of the present invention, preferred embodiments of the present invention are illustrated below with reference to the accompanying drawings.
Example 1.
Referring to fig. 1, there is provided a venturi inner 10 for a sedimentation tank, the venturi inner 10 comprising a housing and a venturi tube 14 located within the housing; the outer shell comprises a lower shell tube 11 with a larger diameter positioned at the lower part, an upper shell tube 12 with a smaller diameter positioned at the upper part and a truncated cone-shaped connecting shell 13 connecting the lower shell tube 11 and the upper shell tube 12; the venturi tube 14 is located in the space formed by the lower shell tube 11 and the connecting shell 13, and the end of the diffuser tube at the top thereof is connected to the lower end of the upper shell tube 12 through a swirl ring 15; the Venturi tube 14, the lower shell tube 11, the upper shell tube 12, the connecting shell 13 and the swirl ring 15 are concentrically arranged; the venturi tube 14 has a throat 16 and a water inlet 18 at the bottom for inflow of raw water; an annular sludge channel 17 is formed between the outer wall of the Venturi tube 14 and the inner wall of the lower shell tube 11.
Referring to fig. 5, the sedimentation tank comprises a tank body 1, a vertical partition plate 4 is arranged inside the tank body 1, and the partition plate 4 divides the inside of the tank body 1 into a water inlet cavity 3 and a sedimentation cavity 7; a water inlet unit is arranged on the side wall of the water inlet cavity 3; the bottom of the partition plate 4 is provided with a plurality of water diversion ports 5 which are arranged at intervals; a closing plate 8 is arranged in the sedimentation cavity 7 and positioned above the top end of the water diversion port 5 to divide the sedimentation cavity 7 into a clear water area positioned at the upper part of the closing plate 8 and a raw water area positioned at the bottom of the closing plate 8; at least one part of the water diversion port 5 is communicated with the raw water area of the sedimentation cavity 7 and is used for providing water passing clearance for raw water to enter the raw water area from the water inlet cavity 3.
The sealing plate 8 is provided with a plurality of mounting holes 9 which are arranged in an array; the bottom of the venturi inner 10 is mounted on the side of the mounting hole 9 above the closing plate 8.
Referring to fig. 5 and 7-8, the bottom in the settling chamber 7 is provided with the same number of separation stacks 6 as the water inlets 5; each separation stack 6 is arranged in parallel, one end of each separation stack 6 is clamped at the lower part of the water inlet 5, and the water passing gap is formed between the top of each separation stack 6 and the upper part of the water inlet 5; the top of said compartment 6 forms a distribution channel 28 of raw water, which distribution channel 28 has an open structure; a mud collection region 27 is formed between adjacent separation stacks 6, and the mud collection region 27 is a closed structure; said closed structure may be, for example, a tube with a separate side wall, such as a circular tube, a square tube, etc., arranged between two adjacent compartments 6; or may be a tubular channel, such as a tubular channel in the shape of an inverted trapezoid or rectangle (not shown), enclosed by cover plate 29 disposed on the upper portion of the side walls of two adjacent compartments 6 and the side walls of two adjacent compartments 6.
Referring to fig. 6-8, two opposite mud discharge chutes 19 are connected to the bottom of each mounting hole 9; the mud discharging slideway 19 has an arched tile-shaped structure and comprises an outer arch plate 20 and an inner arch plate 21 which are arranged in parallel and arched outwards, and two side plates 22 for connecting the side edges of the inner arch plate and the outer arch plate; the inner arch plate 20, the outer arch plate 21 and the two side plates 22 enclose a sandwich channel of the mud discharge slideway 19; the interlayer channel is provided with an inlet 23 which is positioned at the upper end of the mud discharging slide way 19 and is used for being communicated with the mud channel 17 of the Venturi inner member 10, and an outlet 24 which is positioned at the lower end of the mud discharging slide way 19 and extends into the mud collecting area 27; the inlets 23 of the two sludge discharge chutes 19 which are opposite to each other are combined to form a complete circular inlet which just covers the sludge channel 17; the two side plates 22 on the same side of the two opposite mud discharge chutes 19 are gradually far away from top to bottom, so that the outlets 24 of the two opposite mud discharge chutes 19 cannot form a complete circle, and the distribution channel 28 is partially limited by the side plates 22 of the two mud discharge chutes 19.
Wherein the upper surface of the sludge collecting area 27 is provided with an arc-shaped groove corresponding to the outlet 24 of the sludge discharge chute 19; the outlet 24 of the sludge discharge chute 19 is in sealing fit with the arc-shaped groove, so that raw water in a raw water area is prevented from directly entering a sludge collection area 27.
Referring to fig. 5, the water inlet unit may be a water inlet hole 2 provided on a side wall of the water inlet chamber 3, and/or a water inlet overflow groove provided on a side wall of the water inlet chamber 3 parallel to the diaphragm 4.
Referring to fig. 10, the sidewall of the swirl ring 15 is provided with inner tangent (tangential to the inner sidewall) start-up ports 25 uniformly distributed along the circumference; preferably, the screwing-on opening 25 is long-strip-shaped; which allows a flow of water having a higher pressure and agglomerated growing particles to flow to the end of the diffuser of the venturi tube 14 and to swirl into the annular sludge channel 17, which is depressurized by the ejector effect at the throat 16.
Referring to fig. 12, the throat 16 of the venturi tube 14 is provided with arrayed through holes 26 capable of filtering large particulate matters in the sludge channel 17 and preventing the large particulate matters from entering the throat 16 again.
Referring to fig. 12-13, the outer surface of the throat 16 is cooperatively provided with a cleaning assembly rotatable by hydraulic flushing for automatically cleaning the particles adhered to the outer surface of the throat 16 and preventing the blockage of the through holes 26. The cleaning component comprises an impeller frame 31 rotatably erected at one end of the outer surface of the throat pipe 16, cleaning parts 32 longitudinally arranged on the impeller frame 31 and at least covering the opening area of the throat pipe 16, and fan blades 33 connected to the upper end and the lower end of the two adjacent cleaning parts and obliquely arranged. The cleaning portion 32 may be a brush or a blade. The water in the sludge channel 17 flows into the throat 16 under the suction action of the throat 16, so as to impact the fan blades 33, drive the impeller frame 31 to rotate, further drive the cleaning part 32 to clean the outer surface of the throat 16, and prevent the through hole 26 from being blocked.
Example 2.
Referring to fig. 5 and 9, in contrast to embodiment 1, the distribution channel 28 is a closed tubular structure with independent side walls, one end of which is directly connected with the water outlet 5 in a sealing manner; an open sludge collecting area 27 is formed between two adjacent closed channels 28.
The vertical dimension (which can be understood as height) of the distribution channel 28 in the length direction thereof is gradually reduced to offset the pressure drop upstream and downstream in the distribution channel 28 caused by the diversion of the raw water into the plurality of venturi inner members 10 when the raw water flows along the length direction thereof; thereby allowing the raw water to maintain substantially the same pressure when entering the inlets of the venturi inner 10 at different positions.
The upper surface of the distribution channel 28 is provided with a plurality of connecting pipes 30 correspondingly connected with the inlets of the venturi inner member 10; the connecting tube 30 has a varying height along the length of the distribution channel 28 to match the vertical dimension variation of the distribution channel 28 in the length direction.
The mounting hole 9 is concentrically arranged with the connecting pipe 30, and the diameter of the mounting hole 9 is larger than that of the connecting pipe 30, so that a sludge discharge annular gap is formed between the mounting hole and the connecting pipe, and the venturi inner member 10 is allowed to discharge sludge into the sludge collection area 27 through the sludge discharge annular gap.
Example 3.
Referring to fig. 11, unlike the example 1 or 2, the arrangement in which the through-hole 26 is inscribed in the same direction as the swirl-starting port 25 prevents the large granular matters in the sludge passage 17 from entering the inside of the throat 16 again by the swirl inertia of the large granular sludge. When muddy water containing sludge particles entering the sludge channel 17 through the swirling flow of the swirling opening 25 reaches the throat 16, most of the particles are thrown to the outer side wall of the sludge channel 17 due to centrifugal force, part of the particles still flowing against the outer side wall of the throat 16 slide through the outer side of the through hole 26 due to the fact that the swirling flow direction of the particles is the same as the inner tangent direction of the through hole 26, the swirling inertia of the particles enables most of the particles flowing through the through hole 26 to be separated from the water body where the particles are located, and therefore water flow enters the throat from the through hole 26 due to the suction effect of the throat 16, and the particles slide through the outer side of the through hole 26 under the rotation inertia effect of the particles.
Example 4.
Referring to fig. 2-4, different from the embodiments 1-3, the end of the diffuser of the venturi tube 14 is further provided with an inverted swirling cone 34, the bottom surface of the swirling cone 34 is at least not lower than the upper edge of the swirling ring 15, and the cone tip of the swirling cone is not higher than the lower edge of the swirling ring 15, the conical surface of the swirling cone 34 is provided with protrusions or fins for forcing the swirling of the water body, and the direction of the swirling of the water body caused by the protrusions or fins is the same as the direction of the swirling of the water body caused by the swirling opening 25; the cyclone cone 34 can greatly increase the proportion of the particles in the diffuser pipe entering the sludge channel 17. Be equipped with the spinning disk 35 that is used for forcing the water whirl on venturi 14's the diffusion tube inner wall, the water whirl direction that spinning disk 35 arouses with the water whirl direction that arch or fin arouse is the same.
The above is merely an example of the preferred embodiments of the concept of the present invention, but the feasible embodiments of the present invention are not limited to the above, and the embodiments obtained by the modification manner such as replacement by the conventional means without creative efforts by those of ordinary skill in the art also belong to the scope of the feasible embodiments of the present invention, and the actual protection scope of the present invention is subject to the content of the claims.
Claims (8)
1. A venturi internals for a sedimentation tank, characterized in that: the venturi inner member (10) comprises a housing and a venturi tube (14) located within the housing; the shell comprises a lower shell tube (11) with a larger diameter positioned at the lower part, an upper shell tube (12) with a smaller diameter positioned at the upper part and a truncated cone-shaped connecting shell (13) connecting the lower shell tube (11) and the upper shell tube (12); the venturi tube (14) is positioned in a space formed by the lower shell tube (11) and the connecting shell (13), and the tail end of the diffusion tube at the top of the venturi tube is connected to the lower end of the upper shell tube (12) through a rotational flow ring (15); the Venturi tube (14), the lower shell tube (11), the upper shell tube (12), the connecting shell (13) and the rotational flow ring (15) are arranged concentrically; the Venturi tube (14) is provided with a throat (16) and a water inlet (18) which is positioned at the bottom and used for raw water to flow in; an annular sludge channel (17) is formed between the outer wall of the Venturi tube (14) and the inner wall of the lower shell tube (11); the side wall of the rotational flow ring (15) is provided with internally tangent spiral openings (25) which are uniformly distributed along the circumference; the screwing-on opening (25) is in a strip shape; which allows a flow of water having a higher pressure and agglomerated growing particles to flow to the end of the diffuser of the venturi (14) into the annular sludge channel (17) depressurized by the ejector effect at the throat (16); the throat (16) of the Venturi tube (14) is provided with array-shaped through holes (26) which are uniformly distributed along the circumferential wall of the Venturi tube, and the through holes (26) allow water and small granular substances in the sludge channel (17) to enter the throat (16); meanwhile, the through hole (26) can prevent large-particle substances in the sludge channel (17) from entering the interior of the throat (16) again.
2. A venturi inner for a sedimentation tank according to claim 1, wherein: the through hole (2) filters large granular substances in the sludge channel (17) by virtue of the aperture thereof, and prevents the large granular substances from entering the interior of the throat (16) again.
3. A venturi inner for a sedimentation tank according to claim 2, wherein: the outer side surface of the throat pipe (16) is matched with a cleaning component which can rotate by means of hydraulic flushing and is used for automatically cleaning particles attached to the outer surface of the throat pipe (16) and avoiding the blockage of the through hole (26).
4. A venturi inner for a sedimentation tank according to claim 3, wherein: the cleaning assembly comprises an impeller frame (31) rotatably erected at one end of the outer surface of the throat pipe (16), cleaning parts (32) longitudinally arranged on the impeller frame (31) and at least covering the opening area of the throat pipe (16), and fan blades (33) connected to the upper end and the lower end of each of two adjacent cleaning parts (32) and obliquely arranged, wherein the cleaning parts (32) are brushes or scrapers.
5. A venturi inner for a sedimentation tank according to claim 1, wherein: the through hole (26) and the swirling opening (25) are arranged in the same inscribing direction, and large granular substances in the sludge channel (17) are prevented from entering the interior of the throat (16) again through the swirling inertia of large granular sludge.
6. A venturi inner for a sedimentation tank according to any one of the preceding claims, wherein: the tail end of the diffusion pipe of the Venturi pipe (14) is also provided with an inverted cyclone cone (34), the bottom surface of the cyclone cone (34) is at least not lower than the upper edge of the cyclone ring (15), the cone tip of the cyclone cone is not higher than the lower edge of the cyclone ring (15), a bulge or a fin for forcing the water body to swirl is arranged on the conical surface of the cyclone cone (34), and the direction of the water body swirl caused by the bulge or the fin is the same as that of the water body swirl caused by the swirling opening (25).
7. The venturi internals for a settling tank of claim 6, wherein: be equipped with spinning disk (35) that are used for forcing the water whirl on the diffusion tube inner wall of venturi (14), the water whirl direction that spinning disk (35) arouses with the water whirl direction that arch or fin arouse is the same.
8. A venturi inner for a sedimentation tank according to claim 1, wherein: the sedimentation tank comprises a tank body (1), and the tank body (1) is divided into a water inlet cavity (3) and a sedimentation cavity (7) by a vertical partition plate (4); a plurality of water diversion ports (5) are arranged at the bottom of the partition plate (4) at intervals; a sealing plate (8) is arranged in the sedimentation cavity (7) and positioned above the top end of the water diversion port (5) to divide the sedimentation cavity (7) into a clear water area and a raw water area; the sealing plate (8) is provided with a plurality of mounting holes (9) which are arranged in an array; the bottom of the Venturi inner member (10) is arranged on one side, above the closing plate (8), of the mounting hole (9); the raw water area is provided with a distribution channel (28) used for distributing raw water to the bottom of the Venturi inner members (10) and a mud collection area (27) arranged between two adjacent distribution channels (28) at intervals; one end of the distribution channel (28) is in fluid communication with at least a portion of the catchment opening (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010398003.0A CN111632409B (en) | 2020-05-12 | 2020-05-12 | Venturi inner member for sedimentation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010398003.0A CN111632409B (en) | 2020-05-12 | 2020-05-12 | Venturi inner member for sedimentation tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111632409A CN111632409A (en) | 2020-09-08 |
| CN111632409B true CN111632409B (en) | 2022-11-08 |
Family
ID=72324381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010398003.0A Active CN111632409B (en) | 2020-05-12 | 2020-05-12 | Venturi inner member for sedimentation tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111632409B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253735A (en) * | 2022-06-10 | 2022-11-01 | 贵州兰鑫石墨机电设备制造有限公司 | Titanium white waste acid concentration device and concentration process not easy to block |
| CN117026902B (en) * | 2023-10-10 | 2024-01-09 | 山东省水利科学研究院 | Sewage blocking structure for water intake pump station and cleaning method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3603997A (en) * | 1996-09-12 | 1998-03-19 | Robert Hume Pannell | A thickener or clarifier |
| CN2440569Y (en) * | 2000-06-23 | 2001-08-01 | 林英雄 | High performance atomizing desulfurizing dust collector |
| DE10128062A1 (en) * | 2001-06-09 | 2002-12-12 | Henkel Kgaa | Desludging device and method for desludging a liquid |
| CN204816081U (en) * | 2015-07-21 | 2015-12-02 | 长沙宏福环保技术有限公司 | High -efficient wet -type venturi dust removal mechanism |
| CN108658192A (en) * | 2018-05-25 | 2018-10-16 | 李宝生 | A kind of hi-effect coagulation device and method |
| CN208648858U (en) * | 2018-06-26 | 2019-03-26 | 秦皇岛德创节能环保科技有限公司 | Pressure-bearing type purification device |
| CN110217914A (en) * | 2019-07-02 | 2019-09-10 | 中冶京诚工程技术有限公司 | Sewage purification equipment |
-
2020
- 2020-05-12 CN CN202010398003.0A patent/CN111632409B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3603997A (en) * | 1996-09-12 | 1998-03-19 | Robert Hume Pannell | A thickener or clarifier |
| CN2440569Y (en) * | 2000-06-23 | 2001-08-01 | 林英雄 | High performance atomizing desulfurizing dust collector |
| DE10128062A1 (en) * | 2001-06-09 | 2002-12-12 | Henkel Kgaa | Desludging device and method for desludging a liquid |
| CN204816081U (en) * | 2015-07-21 | 2015-12-02 | 长沙宏福环保技术有限公司 | High -efficient wet -type venturi dust removal mechanism |
| CN108658192A (en) * | 2018-05-25 | 2018-10-16 | 李宝生 | A kind of hi-effect coagulation device and method |
| CN208648858U (en) * | 2018-06-26 | 2019-03-26 | 秦皇岛德创节能环保科技有限公司 | Pressure-bearing type purification device |
| CN110217914A (en) * | 2019-07-02 | 2019-09-10 | 中冶京诚工程技术有限公司 | Sewage purification equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111632409A (en) | 2020-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111632409B (en) | Venturi inner member for sedimentation tank | |
| WO2009079828A1 (en) | A high-efficiency low energy consumption desulfurizing dust-removing device | |
| CN210698952U (en) | Silt whirl deposits device suitable for sewage purification handles | |
| CN111617521B (en) | High-efficient sedimentation tank | |
| CN111617520B (en) | Turbulent flow sedimentation tank | |
| CN217340217U (en) | Water flow turning-back separation mechanism and liquid separation and purification device comprising same | |
| CN208136032U (en) | Waste water treatment system | |
| CN115977219A (en) | Automatic water supply and drainage device | |
| CN205357797U (en) | Filtering separation all -in -one | |
| CN212740998U (en) | Coagulation sedimentation system with coagulation sedimentation tank and rotational flow air flotation | |
| CN210261221U (en) | Oil-water separation tank provided with central cylinder | |
| CN210973969U (en) | Internal rotational flow spiral air flotation device | |
| CN209740881U (en) | Clarification tank that high efficiency subsides | |
| CN210751403U (en) | Continuous oil-water separation equipment | |
| CN209771437U (en) | Multistage sedimentation tank structure with better water purification effect | |
| JP4277589B2 (en) | Upflow filter | |
| CN211595177U (en) | Inverted cone up-flow anaerobic sludge reaction device | |
| CN110436619A (en) | A kind of trade effluent acidification uniform device | |
| CN216539004U (en) | Turbulence eliminator and fine particle fluid separation device with same | |
| CN116078006B (en) | Mechanical filter based on constant pressure technology | |
| CN217996938U (en) | Water treatment system of water treatment plant | |
| CN210057624U (en) | Integrated sewage multi-stage treatment device | |
| CN216537349U (en) | Circulating water cyclone dirt separator | |
| CN219209075U (en) | Efficient sand-water separation device | |
| CN212731373U (en) | Separator suitable for gypsum slurry dehydration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20221020 Address after: No. 215, Floor 2, R&D Building, No. 220 Checheng Avenue, Wuhan Economic and Technological Development Zone, 430000, Hubei Applicant after: CHINA CONSTRUCTION THIRD ENGINEERING BUREAU GREEN INDUSTRY INVESTMENT Co.,Ltd. Address before: 223700 new world garden 2-405, Siyang County, Suqian City, Jiangsu Province Applicant before: Shang Tiejun |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |