A counter-flocculation type sedimentation tank

Abstract

The present invention provides a counter-flocculation type sedimentation tank, comprising: a water collection gallery, which is arranged along the direction of water flow, and an overflow weir is provided at the water outlet of the water collection gallery; a sand collection area, which is located at the water inlet of the water collection gallery; a reverse slope platform, which is located between the sand collection area and the overflow weir, and the width of the reverse slope platform is consistent with the width of the water collection gallery; a counter-flooding component, which is located on the slope surface of the reverse slope platform, and the counter-flooding component has a water dividing piece and a water retaining piece arranged at intervals in front and behind, and the water dividing piece and the water retaining piece are both V-shaped structures with openings facing the sand collection area; the water-facing surface of the water dividing piece is an inwardly concave arc surface, and the water dividing piece has a diversion port facing the water retaining piece. In the present invention, the water flow collides with the water-facing surface of the water-dividing component to produce silt flocculation, and the water flow will flow downstream along the water outlet end of the water-facing surface, and the downstream water flow will collide with the forward water flow to produce silt flocculation; the water flow collides with the water retaining surface to produce silt flocculation, and the water flow will flow downstream along the water retaining surface, and the downstream water flow will collide with the forward water flow to produce silt flocculation.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural water conservancy engineering, and in particular to a counter-flocculation type sedimentation tank. Background Art

[0002] One of the main characteristics of northern rivers is the high concentration of sand, which seriously affects the quality of agricultural irrigation. In order to reduce the harmful particle size of sand in the sand-laden water flow, water resource utilization projects often set up sedimentation ponds to achieve this goal.

[0003] At present, sedimentation ponds mostly adopt the static water sedimentation method, and the cross-section mostly adopts a single rectangular cross-section, which reduces the sand carrying capacity by expanding the cross-sectional area and reducing the flow rate. The above-mentioned sedimentation ponds have a single cross-section, unstable sedimentation effect, large sedimentation particle size, and great difficulty in sand removal, making it difficult to meet water requirements. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art sedimentation method that the sand clearing force is small and it is difficult to meet the water use requirements, thereby providing a hedge flocculation type sedimentation tank.

[0005] In order to solve the above technical problems, the present invention provides a hedging flocculation type sedimentation tank, comprising:

[0006] A water collection gallery is arranged along the water flow direction, and an overflow weir is arranged at the water outlet of the water collection gallery;

[0007] a sand collection area, located at the water inlet of the water collection corridor;

[0008] A reverse slope platform is located between the sand collection area and the overflow weir, and the width of the reverse slope platform is consistent with the width of the water collection gallery;

[0009] A counter-impact component is located on the slope of the reverse slope platform, and the counter-impact component has a water dividing member and a water retaining member arranged at intervals in front and back, and both the water dividing member and the water retaining member are V-shaped structures with openings facing the sand collecting area;

[0010] The water-facing surface of the water-dividing member is an inwardly concave arc surface, and the water-dividing member has a flow guide port facing the water-blocking member.

[0011] Furthermore, a sand guiding platform is provided in the sand collecting area, and the sand guiding platform has sand guiding surfaces inclined downwardly toward the left and right sides of the water collecting gallery, and the left and right symmetrical surfaces of the hedging component are located between the two sand guiding surfaces.

[0012] Furthermore, a gate is provided on the side wall of the water collection gallery, and the gate is arranged opposite to the sand guiding surface.

[0013] Furthermore, the water dividing member has two mirror-symmetrical water dividing plates, the two water dividing plates are arranged at intervals on the left and right, and the curvature of the water-facing surface of the water dividing plates is π / 2.

[0014] Furthermore, the water retaining member is a V-shaped groove opening toward the water diversion member, and a symmetric plane of the water retaining member is coplanar with a symmetric plane of the water diversion member.

[0015] Furthermore, the opening angle of the water diverter is equal to the opening angle of the water retainer, and the water diverter is arranged in parallel with the water retainer.

[0016] Furthermore, the angle between the water diversion member and the horizontal plane and the angle between the water retaining member and the horizontal plane are both acute angles.

[0017] Furthermore, the water diversion member and the water retaining member are both perpendicular to the slope of the reverse slope platform.

[0018] Furthermore, the overflow weir is integrally formed on the slope surface of the reverse slope platform, and the overflow weir is perpendicular to the horizontal plane.

[0019] The technical solution of the present invention has the following advantages:

[0020] 1. The counter-coagulation flocculation type sedimentation tank provided by the present invention has a water inlet of a water collection corridor for connecting a water source, and a water outlet for connecting an irrigation device; the reverse slope platform extends to the water outlet of the water collection corridor, and the water flows from bottom to top, and the flow velocity is reduced due to the countercurrent resistance, and part of the silt increases the flocculation amount due to the low flow velocity; the water-facing surface of the water-dividing member is an inwardly concave arc surface, and the water flow collides with the arc surface to reduce the speed, resulting in silt precipitation and flocculation, and the water flow will flow downstream along the water outlet end of the arc surface, and the downstream water flow will collide with the forward water flow to generate silt flocculation; the water flows through the diversion port of the water-dividing member, and the water flow collides with the water retaining surface to reduce the speed, resulting in silt flocculation, and the water flow will flow downstream along the water retaining surface, and the downstream water flow will collide with the forward water flow to generate silt flocculation; the formed silt flocculation flows back to the sand collecting area due to the action of gravity, and the filtered water flows through the overflow weir and overflows from the water outlet. The above-mentioned sedimentation tank structure allows the water flow to perform multiple flushing and flocculation, which reduces the flow rate, increases the amount of sediment flocculation, has a strong sand cleaning effect, and is easy to meet water requirements.

[0021] 2. The hedging and flocculation type sedimentation tank provided by the present invention allows the deposited sediment to flow to both sides along the sand guiding surface of the sand guiding platform, thereby preventing excessive sediment from clogging the middle of the water inlet and thus affecting the hedging and flocculation of the water flow and the hedging component.

[0022] 3. In the counter-flocculation type sedimentation tank provided by the present invention, the silt can automatically flow out from the gate along the sand guide surface, making sand cleaning more convenient.

[0023] 4. In the counter-flocculation type sedimentation tank provided by the present invention, the curvature of the water-facing surface of the water diversion plate is set to π / 2, and the tangent plane at one end face of the water-facing surface is parallel to the positive water flow direction, which has a drainage effect on the positive water flow; the tangent plane at the other end face is perpendicular to the positive water flow direction, and the water flow can flow out along this end face and form a strong counter-flocculation effect with the positive water flow, thereby greatly increasing the amount of sediment flocculation.

[0024] 5. In the counter-flocculation type sedimentation tank provided by the present invention, the water dividing member and the water retaining member are arranged in parallel, so that the interval passage between the water dividing member and the water retaining member is a passage of equal width, thereby avoiding passage blockage caused by sediment deposition.

[0025] 6. In the counter-flocculation type sand settling tank provided by the present invention, the symmetry axes of the water retaining member and the water diversion member coincide with each other, so that the diversion port of the water diversion member and the water retaining member are directly opposite to each other at an angle, so that the water flow can form a strong counter-flow with the water retaining member. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 The top view of the hedging flocculation type sedimentation tank provided in the present invention.

[0028] Figure 2 for Figure 1 Front cross-sectional view.

[0029] Figure 3 Schematic diagram of water flow direction in the sedimentation tank.

[0030] Figure 4 Schematic diagram of sediment flow in the sedimentation pond.

[0031] Description of reference numerals:

[0032] 1. Water collection corridor; 2. Reverse slope platform; 3. Sand guide platform; 4. Counter-impact component; 5. Water retaining part; 6. Gate; 7. Overflow weir; 8. Water diversion plate; 9. First flocculation section; 10. Second flocculation section; 11. Third flocculation section; 12. Water diversion part. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] The hedging flocculation type sedimentation tank provided in this embodiment includes: a water collection corridor 1, a sand collection area, a reverse slope platform 2 and a hedging component 4. The hedging component 4 includes a water dividing member 12 and a water retaining member 5 arranged at intervals in front and behind.

[0038] like Figure 1 , Figure 2As shown, the water collection gallery 1 is a rectangular through groove surrounded by a bottom plate, a left side plate and a right side plate, and the water inlet of the water collection gallery 1 is used to connect to a water source. The sand collection area is located at the water inlet of the water collection gallery 1, and is used to accommodate the deposited silt; a sand guide platform 3 is provided in the sand collection area, and the sand guide platform 3 is set with the same width as the water collection gallery 1; the sand guide platform 3 is a bilaterally symmetrical inverted V-shaped structure, with a bilaterally symmetrical sand guide surface, and the sand guide surface and the side wall of the water collection gallery 1 form a V-shaped sand collection chamber; when the deposited silt is impacted to the top of the sand guide platform 3, it can slide down along the sand guide surface into the sand collection chambers on the left and right sides due to the action of gravity. Gates 6 are provided on both the left and right plates, and the gates 6 are directly opposite to the sand guide surface. The deposited silt can automatically slide out from the gates 6 due to its own gravity, thereby achieving the effect of automatic sand clearing. The reverse slope platform 2 is as wide as the water collection corridor 1, and the reverse slope platform 2 is close to the sand guide platform 3 and extends to the water outlet of the water collection corridor 1; the slope height of the reverse slope platform 2 gradually increases from the water inlet to the water outlet, and the water flows backward along the slope, which has the effect of reducing the flow rate of the water flow; there is an integrally formed overflow weir 7 on the slope at the water outlet, and the overflow weir 7 is perpendicular to the horizontal plane; wherein the top of the overflow weir 7 is in an arc shape. A counter-hedge component 4 is connected to the slope of the reverse slope platform 2, and the counter-hedge component 4 is a bilaterally symmetrical structure, and the symmetric plane of the counter-hedge component 4 is coplanar with the symmetric plane of the sand guide platform 3.

[0039] like Figure 1 , Figure 2As shown, according to the slope length of the reverse slope platform 2 and the water use requirements, the hedging components 4 can be arranged in multiple groups; the water flows through the hedging components 4 for hedging and flocculation, and the water after filtering the sand flows from the top of the overflow weir 7. The hedging components 4 have a water diversion component 12 and a water retaining component 5, and the water diversion component 12 and the water retaining component 5 are arranged on the slope with a front-to-back interval; the water diversion component 12 and the water retaining component 5 are both arranged perpendicular to the slope, and at this time, the angles between the water diversion component 12 and the water retaining component 5 and the horizontal plane are both acute angles, and the setting directions of the two are opposite to the flow direction of the forward water flow, which can play a role in hedging and blocking the water flow. The water diversion component 12 is composed of two water diversion plates 8, which are spaced apart from each other and arranged in a mirror-symmetrical manner. The space between the two water diversion plates 8 is the diversion port of the water diversion component 12; the two water diversion plates 8 form a V-shaped structure, and the angular bisector of the V-shaped structure is coplanar with the symmetry plane of the sand guide platform 3; the water-facing surface of the water diversion plate 8 is an inwardly concave arc surface, and the curvature of the arc surface is π / 2, and the back surface of the water diversion plate 8 is a plane; the tangent plane of the arc-shaped water-facing surface at one end close to the sand guide platform 3 is parallel to the positive water flow direction, and has a drainage effect on the positive water flow; the tangent plane of the arc-shaped water-facing surface at one end away from the sand guide platform 3 is perpendicular to the positive water flow direction, and the water flow can flow out along this end surface and form a strong counteracting effect with the positive water flow, greatly increasing the amount of sediment flocculation. The water retaining member 5 is a V-shaped groove with an opening toward the water diversion member 12, the symmetric plane of the water retaining member 5 is coplanar with the symmetric plane of the water diversion member 12, and the water-facing surface and the water-receiving surface of the water retaining member 5 are both planes; the angle position of the water retaining member 5 is arranged directly opposite to the diversion port of the water diversion member 12, and the forward water flow can form a strong impact with the water retaining member 5. Among them, the opening angle of the water diversion member 12 is equal to the opening angle of the water retaining member 5, and the two water diversion plates 8 are parallel to the left and right side surfaces of the water retaining member 5.

[0040] like Figure 3 As shown, the arrows in the figure represent the direction of water flow; the counter-balance component 4 is located in the middle of the reverse slope platform 2, and is spaced from the left and right sides of the water collection gallery 1; the space between the counter-balance component 4 and the water collection gallery 1 is the first water flow channel, and the diversion port of the water diversion component 12 is the second water flow channel. The water flow is divided into two parts for sand filtration: one part of the water flows through the first water flow channel and extends to the outlet of the water collection gallery 1; the other part of the water flows through the second water flow channel to between the water diversion component 12 and the water retaining component 5, collides and collides with the water retaining component 5, and after the collision, the water flows along the side of the water retaining component 5 to the first water flow channel.

[0041] like Figure 3 , Figure 4As shown, the water flow collision and flocculation include the following forms: the first collision: the forward water flow collides and collides with the water-facing surface of the water guide plate, the water flow is decelerated, and then helps the sediment to flocculate; the second collision: the water flow flowing out through the water-facing surface of the water guide plate collides vertically with the forward water flow, the sediment in the water flow collides and flocculates, and settles due to gravity; the third collision: the water flow collides and collides with the angle between the water retaining member 5, the water flow is decelerated, and then helps the sediment to flocculate; the fourth collision: the water flow flowing out along the side of the water retaining member 5 collides with the forward water flow in the first water flow channel, the sediment in the water flow collides and flocculates, and settles due to gravity. The sediment flocculation produced by the first and second impacts is located between the two water guide plates, marked as the first flocculation part 9; the sediment flocculation produced by the third impact is located at the angle position of the water retaining member 5, marked as the second flocculation part 10; the sediment flocculation produced by the fourth impact is located in the first water flow channel, marked as the third flocculation part 11. The sediment flocculation produced by the above four impacts flows along the slope of the reverse slope platform 2 to the sand collection area. Figure 4 The direction of the middle arrow is the flow direction of the sediment flocs.

[0042] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A counter-flocculation type sedimentation tank, characterized in that: include: A water collection gallery (1) is arranged along the direction of water flow, and an overflow weir (7) is arranged at the water outlet of the water collection gallery (1); A sand collection area, located at the water inlet of the water collection corridor (1); A reverse slope platform (2) is located between the sand collection area and the overflow weir (7), and the width of the reverse slope platform (2) is consistent with the width of the water collection gallery (1); A counter-impact assembly (4), wherein a plurality of counter-impact assemblies (4) are provided and are located on the slope of the reverse slope platform (2), wherein the counter-impact assembly (4) comprises a water dividing member (12) and a water retaining member (5) which are arranged at intervals in front and behind, and the water dividing member (12) and the water retaining member (5) are both V-shaped structures with openings facing the sand collecting area; The water-facing surface of the water-dividing member (12) is an inwardly concave arc-shaped surface, and the water-dividing member (12) has a flow guide opening facing the water-blocking member (5).

2. The counter-flocculation type sedimentation tank according to claim 1 is characterized in that: A sand guide platform (3) is provided in the sand collection area, and the sand guide platform (3) has sand guide surfaces that are inclined downwards towards the left and right sides of the water collection gallery (1), and the left and right symmetrical surfaces of the hedging component (4) are located between the two sand guide surfaces.

3. The counter-flocculation type sedimentation tank according to claim 2 is characterized in that: A gate (6) is provided on the side wall of the water collection gallery (1), and the gate (6) is arranged opposite to the sand guide surface.

4. The counter-flocculation type sedimentation tank according to claim 1 is characterized in that: The water dividing member (12) has two mirror-symmetrical water dividing plates (8), the two water dividing plates (8) are arranged at intervals on the left and right, and the curvature of the water-facing surface of the water dividing plates (8) is π / 2.

5. The counter-flocculation type sedimentation tank according to claim 4 is characterized in that: The water retaining member (5) is a V-shaped groove with its opening facing the water diversion member (12); the symmetric plane of the water retaining member (5) is coplanar with the symmetric plane of the water diversion member (12).

6. The counter-flocculation type sedimentation tank according to claim 1, characterized in that: The opening angle of the water diversion member (12) is equal to the opening angle of the water retaining member (5), and the water diversion member (12) and the water retaining member (5) are arranged in parallel.

7. The counter-flocculation type sedimentation tank according to claim 1 is characterized in that: The angle between the water diversion member (12) and the horizontal plane and the angle between the water retaining member (5) and the horizontal plane are both acute angles.

8. The counter-flocculation type sedimentation tank according to claim 7, characterized in that: The water diversion member (12) and the water retaining member (5) are both perpendicular to the slope surface of the reverse slope platform (2).

9. The counter-flocculation type sedimentation tank according to claim 1, characterized in that: The overflow weir (7) is integrally formed on the slope surface of the reverse slope platform (2), and the overflow weir (7) is perpendicular to the horizontal plane.

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