CN214634664U - Water flow and gravel separating device - Google Patents
Water flow and gravel separating device Download PDFInfo
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- CN214634664U CN214634664U CN202022996459.5U CN202022996459U CN214634664U CN 214634664 U CN214634664 U CN 214634664U CN 202022996459 U CN202022996459 U CN 202022996459U CN 214634664 U CN214634664 U CN 214634664U
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Abstract
The utility model discloses a rivers grit separator. Water flow grit separator comprising: the volute is provided with an inner cavity; the water inlet is communicated with the inner cavity of the volute, and the direction of the water inlet deviates from the center of the volute; the overflow port is arranged at the top of the volute and is communicated with the inner cavity of the volute; and each baffle is distributed on the inner side of the volute, and an included angle is formed between each baffle and the inner wall of the volute. Has the advantages that: the direction of the water inlet deviates from the center of the volute, so that water flow can rotate and flow in the volute and sequentially scour the baffles, and therefore gravel can be promoted to be intercepted by the baffles, and gravel can be deposited at the bottom of the volute; the water flow can overflow out of the volute through the overflow port; be equipped with the contained angle between the inner wall of baffle and spiral case, make the gravel that the baffle can intercept in the rivers to make the gravel can deposit the bottom of spiral case, make the gravel easily by concentrated clearance. The utility model relates to a hydraulic engineering.
Description
Technical Field
The utility model relates to a hydraulic engineering, in particular to rivers gravel separator.
Background
Due to unreasonable utilization of land, damage of vegetation, bare land, movement of geological structures, loose geology, large relief of topography, concentrated rainstorm and the like, water and soil loss in hilly and mountainous areas is serious. The water and soil loss in hilly mountain areas causes the content of gravel in stream river water to be high, and when the gravel is converged into a reservoir or a downstream dry flow, as the river bed gradient is reduced, the flow speed is reduced, gravel and sand can be gradually precipitated, siltation is caused, a local river bed is raised, even the river bed is blocked, the flood discharge capacity of the river bed is reduced, and the flood control safety is threatened. Due to the reasons of low vegetation coverage, loose geology, melting of ice and snow in spring, violent flood and the like, the sand content of rivers in loess plateau areas is very high when flood occurs, and the phenomenon of river bed silting caused by stream water flow gravel sedimentation is very common and has huge harm.
In order to solve the problem of sediment siltation of gravel in the riverbed in hilly mountain area and loess plateau area, among the prior art, the gravel of sediment siltation in the riverbed usually need be cleared up through the mode of excavation, and technical defect lies in: settled gravel is often widely dispersed throughout the riverbed, resulting in greater difficulty in cleaning operations.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a rivers grit separation device that can follow in rivers and separate the grit.
The technical scheme adopted for solving the technical problems is as follows:
water flow grit separator comprising:
the volute is provided with an inner cavity;
the water inlet is communicated with the inner cavity of the volute, and the direction of the water inlet deviates from the center of the volute;
the overflow port is arranged at the top of the volute and is communicated with the inner cavity of the volute;
and each baffle is distributed on the inner side of the volute, and an included angle is formed between each baffle and the inner wall of the volute.
The water flow and gravel separating device at least has the following beneficial effects:
the direction of the water inlet deviates from the center of the volute, so that water flow can rotate and flow in the volute and sequentially scour the baffles, and therefore gravel can be promoted to be intercepted by the baffles, and gravel can be deposited at the bottom of the volute; the water flow can overflow out of the volute through the overflow port; be equipped with the contained angle between the inner wall of baffle and spiral case, make the gravel that the baffle can intercept in the rivers to make the gravel can deposit the bottom of spiral case, make the gravel easily by concentrated clearance.
In a possible embodiment, the baffle is provided with a plurality of through holes, and the through holes penetrate through the baffle. The through hole can provide the passageway that overflows for rivers, is favorable to reducing the baffle to the resistance of rivers, can also promote rivers to flow along the inner wall of spiral case to can improve the interception effect of baffle to the grit.
In one possible embodiment, the baffles are arranged in a circumferential array along the axial direction of the volute. The baffles are arranged in a circumferential array along the axial direction of the volute, so that the stability of the flow of water in the volute is improved.
In one possible embodiment, the water flow grit separation means further comprises a settling section provided at the bottom of the volute, and a first screen provided at the bottom of the settling section. The deposit part can provide a space for the concentrated deposition of the gravel, and the first filter screen can discharge particles with smaller sizes out of the volute and concentrate the gravel with larger sizes in the deposit part.
In one possible embodiment, the water flow grit separator further comprises a second screen covering the overflow port. The second screen can prevent the grit from overflowing out of the volute along with the water flow, thereby improving the separation degree of the water flow and the grit.
In one possible embodiment, the flow and grit separator further comprises a conduit in communication with the interior chamber of the volute and forming the water inlet. The pipeline has a guiding function to the water flow, and the water flow can flow into the inner cavity of the volute in a stable direction.
In one possible embodiment, the material of the volute is reinforced concrete. The volute is made of reinforced concrete, so that the volute is easy to adapt to large river channels and streams.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic view of the arrangement of the baffle plate in the volute according to the embodiment of the present invention;
reference numerals:
the device comprises a volute 1, a water inlet 2, an overflow port 3, a baffle 4, a through hole 5, a first screen 6, a settling part 7, a second screen 8 and a pipeline 9.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1-2, a water stream grit separation apparatus, comprising:
the spiral case 1 is provided with an inner cavity;
the water inlet 2 is communicated with the inner cavity of the volute 1, and the direction of the water inlet 2 deviates from the center of the volute 1;
the overflow port 3, the overflow port 3 is set up in the top of the spiral case 1, the overflow port 3 communicates with cavity of the spiral case 1;
the baffles 4 are distributed on the inner side of the volute 1, and included angles are formed between the baffles 4 and the inner wall of the volute 1.
The water flow and gravel separating device at least has the following beneficial effects:
the direction of the water inlet 2 deviates from the center of the volute 1, so that water flow can rotate and flow in the volute 1 and sequentially scour each baffle 4, and therefore gravel can be promoted to be intercepted by the baffles 4, and gravel can be deposited at the bottom of the volute 1; the water flow can overflow out of the volute 1 through the overflow port 3; an included angle is formed between the baffle 4 and the inner wall of the volute 1, so that the baffle 4 can intercept gravel in water flow, and gravel can be deposited at the bottom of the volute 1, so that the gravel is easy to be intensively cleaned.
Regarding the scroll casing 1, the horizontal cross-sectional shape of the inner cavity of the scroll casing 1 is circular, making the inner wall of the scroll casing 1 a curved surface. The water flow can rotate along the inner wall of the volute 1. The gravel flows more easily through the baffle 4 by the centrifugal action, so that the intercepting efficiency can be improved.
Regarding the water inlet 2, the direction of the water inlet 2 deviates from the center of the volute 1, meaning that there is a distance E between the center of the volute 1 and the direction of the water inlet 2 as shown in fig. 2. Because the direction of the water inlet 2 deviates from the center of the volute 1, when the water flow flows into the volute 1 along the direction A in the water inlet 2, the water flow rotates along the directions B, C and D shown in FIG. 2, so that the gravel carried by the water flow sequentially flows through the baffles 4 and is intercepted and deposited on the bottom of the volute 1.
Regarding the overflow 3, the overflow 3 is provided at the top of the volute 1, and the water flow can overflow from the overflow 3 into the gallery in the direction G shown in fig. 1 and flow back along the gallery into the river.
As for the baffle plates 4, the number of the baffle plates 4 is five. An included angle is formed between the baffle 4 and the inner wall of the volute 1, which means that an included angle F shown in fig. 2 is formed between one side of the baffle 4 and the inner wall of the volute 1.
The water flow and gravel separation device has the beneficial effects that stream water with high sand content can be introduced, after the water flow is subjected to rotary turning energy dissipation and undercurrent energy dissipation in the volute 1, the flow speed is remarkably reduced and is lower than the starting flow speed of coarse sand and gravel, and the sand and gravel are precipitated and enter the gravel collection pool; most of the decelerated water flow flows back to the stream through the overflow port 3 and the gallery; thereby obviously reducing the sand gravel content of stream water, protecting the scouring and silting balance of a downstream riverbed, ensuring the flood discharge capacity of the riverway and reducing flood disasters. The volute 1 structure also has the following characteristics: firstly, the water flow enters the volute 1 to rotate and turn, the kinetic energy is obviously reduced, the flow speed is reduced, and the sand gravel deposition is facilitated; secondly, the water flow enters the volute 1 to generate undercurrent energy dissipation, so that the kinetic energy is remarkably reduced, the flow speed is reduced, and the sand gravel deposition is facilitated; the overflow port 3 is higher than the water inlet 2, so that the water flow energy is obviously reduced, the flow velocity is reduced, and sand gravel deposition is facilitated; fourthly, the sand gravel can be used as a building material after being collected, and is recycled; the structure maintenance is simple, and the maintenance is convenient.
In a possible embodiment, the baffle 4 is provided with a plurality of through holes 5, and the through holes 5 penetrate through the baffle 4. The through hole 5 can provide the passageway that overflows for rivers, is favorable to reducing the resistance of baffle 4 to rivers, can also promote rivers to flow along the inner wall of spiral case 1 to can improve the interception effect of baffle 4 to the grit.
In a possible embodiment, the individual baffles 4 are arranged in a circumferential array in the axial direction of the volute 1. The baffle plates 4 are arranged in a circumferential array along the axial direction of the volute 1, so that the stability of the water flow flowing in the volute 1 is improved.
In a possible embodiment, the water flow grit separating device further comprises a settling section 7 and a first screen, the settling section 7 being provided at the bottom of the volute 1, the first screen being provided at the bottom of the settling section 7. The settling section 7 can provide a space for the concentrated settling of the gravel, and the first screen can discharge the smaller sized particles out of the scroll 1 and concentrate the larger sized gravel in the settling section 7.
As for the deposit portion 7, the deposit portion 7 is recessed from the bottom of the inner cavity of the scroll casing 1. The shape of the deposit portion 7 is a cone. The grit can be deposited on the deposit portion 7, facilitating the centralized handling of the grit.
As for the first screen, the first screen is provided at the bottom of the settling section 7. The smaller sized particles can pass through the first screen and be discharged out of the volute 1. The particulate matter of larger size can be held in the deposit portion 7.
In a possible embodiment the water flow grit separating device further comprises a second screen covering the overflow opening 3. The second screen prevents the sand from overflowing out of the scroll case 1 with the water flow, so that the separation degree of the water flow and the sand can be improved.
As for the overflow port 3, the overflow port 3 is circular in shape. The top of the volute 1 is provided with a cylindrical convex part, and the overflow port 3 is arranged on the top surface of the cylindrical convex part. The second filter screen covers the overflow port 3, which can prevent the gravel with larger particles from overflowing out of the volute 1.
In a possible embodiment, the water flow grit separating means further comprises a conduit 9, the conduit 9 communicating with the inner cavity of the volute 1 and forming the water inlet 2. The pipe 9 has a guiding function to the water flow, so that the water flow can flow into the inner cavity of the volute 1 in a stable direction.
As for the duct 9, the sectional shape of the duct 9 is rectangular. The pipe 9 intersects tangentially the outer wall of the volute 1, thus forming the water inlet 2.
In a possible embodiment, the material of the volute 1 is reinforced concrete. The material of the volute 1 is reinforced concrete, so that the volute 1 is easy to adapt to larger river channels and streams.
Regarding the volute 1, the concrete reinforcement ratio of the volute 1 is 0.5% -1.5%, the design strength grade of the volute 1 is C25-C50, and the mix proportion parameters of the concrete materials of the volute 1 are as follows:
the particle size of the aggregate can be selected in any one of the following intervals: 5 mm-20 mm, 5 mm-31.5 mm, 16 mm-31.5 mm, 20 mm-40 mm, 5 mm-40 mm;
the water-to-glue ratio is 0.28-0.55;
the sand rate is 32% -39%;
the unit water consumption is 150kg/m3～220kg/m3；
The mixing amount of the slag powder is 0-50% of the mass of the cementing material, and the grade of the slag powder is S95 grade or S105 grade;
the mixing amount of the fly ash is 0-25% of the mass of the cementing material, and the fly ash is I-grade or II-grade fly ash;
the mixing amount of the water reducing agent is 0-2.5% of the mass of the cementing material, and the water reducing agent is at least one of lignosulfonate water reducing agents, naphthalene water reducing agents, melamine water reducing agents, sulfamate water reducing agents, fatty acid water reducing agents or polycarboxylic acid water reducing agents;
the mixing amount of the air entraining agent is 0-0.1% of the mass of the cementing material.
The slump of the mixture is 30-100 mm.
The type of the cement of the volute 1 is one of portland cement, ordinary portland cement, fly ash portland cement, slag portland cement, moderate-heat portland cement, low-heat portland cement or composite portland cement; the cement strength rating is one of 32.5, 32.5R, 42.5R, 52.5 or 52.5R.
The mixed water is one of natural water, tap water or reclaimed water.
The construction method of the water flow gravel separation device comprises the following steps:
step 1) basic treatment;
step 2), a bottom plate of the volute 1 is built, a first screen 6 and a ramp are arranged on the bottom plate, and the ramp is externally connected with a deposition part 7;
step 3) building a shell of the reinforced concrete volute 1, wherein the shell is provided with a pipeline 9 and a reinforced concrete effluent collecting gallery;
step 4), constructing an overflow port 3 and a second filter screen of the volute 1;
and 5) building an upstream water diversion gallery and a downstream water drainage gallery.
In the step 2), the first screen 6 is made of at least one of a stainless steel mesh, a steel wire mesh, a copper mesh, an iron wire mesh, a concrete grid or a cow tendon mesh. The elevation of the bottom plate is 800 mm-2000 mm lower than that of the water inlet 2, and the area of the second screen 8 is 2% -8% of the water flow section of the water inlet 2 in the rich water period.
In the step 3), the elevation of the bottom of a water inlet 2 of a shell of the volute 1 is 100-500 mm higher than the elevation of a river bed, and the upward slope is 2-5%; the maximum diameter of the volute 1 is 3-10 times of the water flow section of the water inlet 2 in the water enrichment period; the sectional area of the effluent collecting gallery is 2-4 times of the water flow section of the water inlet 2 in the full water period.
In the step 4), the height of the overflow port 3 is 1000 mm-2000 mm higher than that of the water inlet 2, and the cross section size of the overflow port 3 is 2 times-5 times of the water flow cross section of the water inlet 2 in the water-rich period. The latticed top cover is made of stainless steel bar meshes, copper bar meshes, iron bar meshes or concrete grids.
In the step 5), the length of the upstream water diversion gallery is 1 m-100 m, and the gradient is 1% -5%; the length of the downstream drainage gallery is 1-50 m, and the gradient is 1-5%.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. Water flow grit separator, its characterized in that includes:
the volute is provided with an inner cavity;
the water inlet is communicated with the inner cavity of the volute, and the direction of the water inlet deviates from the center of the volute;
the overflow port is arranged at the top of the volute and is communicated with the inner cavity of the volute;
the spiral case comprises a spiral case body and a plurality of baffles, wherein the spiral case body is provided with a plurality of spiral cases, the baffles are distributed on the inner side of the spiral case body, and an included angle is formed between each baffle and the inner wall of the spiral case body.
2. The water flow grit separator of claim 1, wherein: the baffle is provided with a plurality of through holes, and the through holes penetrate through the baffle.
3. The water flow grit separator of claim 1, wherein: the baffles are arranged in a circumferential array along the axial direction of the volute.
4. The water flow grit separation device of any one of claims 1 to 3, wherein: the water flow and gravel separating device further comprises a deposition part and a first filter screen, wherein the deposition part is arranged at the bottom of the volute, and the first filter screen is arranged at the bottom of the deposition part.
5. The water flow grit separation device of any one of claims 1 to 3, wherein: the water flow grit separation device further comprises a second filter screen, and the second filter screen covers the overflow port.
6. The water flow grit separation device of any one of claims 1 to 3, wherein: the water flow grit separator further includes a conduit in communication with the inner chamber of the volute and forming the water inlet.
7. The water flow grit separator of claim 1, wherein: the volute is made of reinforced concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022996459.5U CN214634664U (en) | 2020-12-14 | 2020-12-14 | Water flow and gravel separating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022996459.5U CN214634664U (en) | 2020-12-14 | 2020-12-14 | Water flow and gravel separating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214634664U true CN214634664U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022996459.5U Active CN214634664U (en) | 2020-12-14 | 2020-12-14 | Water flow and gravel separating device |
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| CN (1) | CN214634664U (en) |
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