Surface layer water drawing device, precipitation tank and precipitation system

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a surface layer water drawing device, a precipitation tank and a precipitation system. The surface layer water drawing device comprises a fixed partition plate and a water drawing component. The front side face of the fixed partition plate is used for being in sealing fit with the front inner wall of the precipitation tank body, and the rear side face of the fixed partition plate is used for being in sealing fit with the rear inner wall of the precipitation tank body so that a tank body of the precipitation tank body can be divided into a left space and a right space. The lower end of the water drawing component is hinged to the fixed partition plate, the front side face of the water drawing component is used for being in sealing fit with the front inner wall, the rear side face of the water drawing component is used for being in sealing fit with the rear inner wall, and the upper end of the water drawing component floats on the water surface of the left space so that the water drawing component can float along with water flow. An overflow groove is formed in the upper side surface of the water drawing part; the overflow tank is used for overflowing surface water in the left space to the right space. The surface layer water drawing device can work continuously, and the settling separation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially relates to a surface layer water pumping device, sediment tank and sediment system. BACKGROUND

[0002] The water product cultivation sewage is separated and purified by natural sedimentation, and the key granular suspended matter (such as fish manure, leftover feed, mucus, impurities and adherent dirt etc.) can be automatically discharged regularly, and the sedimentation device can be continuously operated.

[0003] The existing method is to configure a building cement sedimentation tank according to a certain proportion of the cultivation water body, and the water pollutants are separated and removed by natural sedimentation, and when the sedimentation tank reaches a certain thickness (which may affect the sedimentation effect), the water in the sedimentation tank is emptied, and the deposited pollutants (sludge) in the bottom of the tank is manually removed, and the sedimentation tank cannot work continuously.

[0004] The sedimentation tank for separating and purifying cultivation sewage has the problems of large occupation area and limited treatment efficiency, and due to the large amount of sludge, the sedimentation tank needs to be emptied regularly for manual removal, which cannot be continuously treated, and not only the workload is large, but also the environment is poor, and if not properly treated, it may cause secondary pollution.

[0005] The fish manure and leftover feed are decomposed in water, and the particles are very small, and when separated by a microfilter, if the filter screen aperture is too small, the cultivation sewage is rich in organic matter, which is easy to rot and breed bacteria (produce bacterial membrane or mucus), and the filter screen is blocked. INVENTION CONTENTS

[0006] In order to solve at least one problem in the background art, the utility model provides a surface layer water pumping device, a sediment tank and a sediment system.

[0007] The utility model provides a surface layer water pumping device, which comprises:

[0008] The front side of the fixed partition plate is used for sealing cooperation with the front side inner wall of the sediment tank body, and the rear side of the fixed partition plate is used for sealing cooperation with the rear side inner wall of the sediment tank body, so as to divide the tank body of the sediment tank body into left side space and right side space.

[0009] A water scooping component, a lower end of the water scooping component is hinged with the fixed partition plate, a front side of the water scooping component is used for sealing cooperation with the front inner wall, a rear side of the water scooping component is used for sealing cooperation with the rear inner wall, and an upper end of the water scooping component floats on a water surface of the left space, so that the water scooping component floats with water flow; an upper side of the water scooping component is provided with a water overflow groove; and the water overflow groove is used for overflowing surface water of the left space to the right space.

[0010] According to the surface water scooping device, the water scooping component comprises:

[0011] A floating body assembly, a lower end of the floating body assembly is hinged with the fixed partition plate, so that the floating body assembly swings left and right; and an upper side of the floating body assembly is provided with the water overflow groove;

[0012] A flexible water blocking assembly, which is used for unfolding or folding along the left-right direction; a lower end of the flexible water blocking assembly is sealingly matched with the fixed partition plate, and the flexible water blocking assembly is sealingly matched with the floating body assembly and the sediment tank body.

[0013] According to the surface water scooping device, the floating body assembly comprises:

[0014] A floating body, an upper surface of the floating body is provided with the water overflow groove along the front-rear direction;

[0015] A movable baffle, a lower end of the movable baffle is hinged with the fixed partition plate, and an upper end of the movable baffle is connected with the floating body; and the movable baffle is sealingly matched with the flexible water blocking assembly.

[0016] According to the surface water scooping device, the floating body comprises an outer cylinder; the outer cylinder is provided with an inner cylinder mounting hole along an axial direction of the outer cylinder, and an inner cylinder is formed in the inner cylinder mounting hole; a side surface of the outer cylinder is provided with the water overflow groove, and a groove bottom of the water overflow groove is a side surface of the inner cylinder.

[0017] According to the surface water scooping device, an included angle β of two side surfaces of the water overflow groove is not less than 90° and not more than 180°.

[0018] According to the surface water scooping device, the flexible water blocking assembly comprises a first flexible water blocking piece and a second flexible water blocking piece; and the first flexible water blocking piece and the second flexible water blocking piece are arranged in the front-rear direction.

[0019] According to the surface water scooping device, the first flexible water blocking piece comprises a folding portion and a fixed portion; the folding portion is formed on one side of the fixed portion, another side of the fixed portion is sealingly matched with the sediment tank body; and one side of the folding portion, which is away from the fixed portion, is sealingly matched with the floating body assembly.

[0020] According to the surface layer water pumping device, the upper side of the fixed partition plate is provided with a mounting groove along the axial direction of the fixed partition plate, a rotating shaft is mounted in the mounting groove, and the rotating shaft and the water pumping component are rotationally matched around the axial direction of the fixed partition plate.

[0021] The utility model discloses a second aspect provides a sedimentation tank, including any one of the surface layer water pumping device described above.

[0022] The utility model discloses a third aspect provides a sedimentation system, including a plurality of the sedimentation tank described above, a plurality of the sedimentation tank is in series setting, and is communicated in turn, or, a plurality of the sedimentation tank is in parallel setting.

[0023] The surface layer water pumping device provided by the utility model can separate the sedimentation tank body into left side space and right side space by arranging the fixed partition plate, the left side space can be used for sedimentation operation, and the right side space is used for collecting clean water. In addition, the fixed partition plate can also provide a mounting base for the water pumping component. By arranging the water pumping component hinged to the fixed partition plate, the water pumping component is sealingly matched with the front side inner wall and the rear side inner wall of the sedimentation tank body, and can also float on the water surface of the left side space, so that the upper layer clean water of the left side space can be guided to the right side space, the left side space can be separated from the solid-liquid during the sedimentation, continuous operation can be realized, and the sedimentation separation efficiency is improved.

[0024] The sedimentation tank and the sedimentation system provided by the utility model include the surface layer water pumping device, and therefore have at least the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0026] Figure 1 It is one of the sectional view structural schematic diagrams of the sedimentation tank provided by the utility model.

[0027] Figure 2 It is one of the structural schematic diagrams of the self-dredging device provided by the utility model.

[0028] Figure 3 It is one of the structural schematic diagrams of the solid-liquid isolation device provided by the utility model.

[0029] Figure 4 It is one of the structural schematic diagrams of the solid-liquid isolation device provided by the utility model under the visual view from the top.

[0030] Figure 5is a structural schematic view of a first driving assembly of a solid-liquid isolation device provided by the utility model.

[0031] Figure 6 is a structural schematic view of a surface layer water pumping device and a water inlet device under a planar visual angle provided by the utility model.

[0032] Figure 7 is a structural schematic view of a first flexible water blocking part of a surface layer water pumping device provided by the utility model.

[0033] Figure 8 is a three-dimensional structural schematic view of a float of a surface layer water pumping device provided by the utility model.

[0034] Figure 9 is a structural schematic view of a float of a surface layer water pumping device under a front visual angle provided by the utility model.

[0035] Figure 10 is Figure 9 a structural schematic view of A-A section.

[0036] Reference signs:

[0037] 100, sedimentation tank body;

[0038] 200, water inlet device; 210, water inlet main pipeline; 220, water inlet branch pipeline; 230, drain pipe;

[0039] 300, surface layer water pumping device; 310, fixed partition plate; 320, water pumping part; 330, rotating shaft; 321, float assembly; 322, flexible water blocking assembly; 3211, float; 3212, movable baffle; 3221, first flexible water blocking part; 3222, second flexible water blocking part; 3223, folding part; 3224, fixed part;

[0040] 400, solid-liquid isolation device; 410, isolation assembly; 411, turnover plate; 420, first driving assembly; 421, main gear; 422, first driving structure; 423, first transmission part; 424, first driving part; 425, speed change gear; 426, screw rod; 427, transmission shaft; 428, connecting shaft;

[0041] 500, self-dredging device; 510, shell; 520, concentric circular flow channel; 530, sewage guide assembly; 511, sewage outlet; 521, drainage port; 522, annular flow channel; 523, drainage plate; 531, guide baffle; 532, sewage water spraying part. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model will be described clearly and completely in combination with the drawings in the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0043] In the description of the utility model, it is necessary to explain that, unless another explicit provision and limitation, the term "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection, it can be mechanical connection, or electrical connection, it can be direct connection, or indirect connection through intermediate medium. For the ordinary skilled in the art, the specific meaning of the above-mentioned term in the embodiment of the utility model can be understood according to the specific circumstances.

[0044] In the embodiment of the utility model, unless another explicit provision and limitation, the first feature is "on" or "under" the second feature, which can be direct contact of the first and second features, or indirect contact of the first and second features through intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than the second feature.

[0045] In the description of the specification, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the embodiment of the utility model. In the specification, the illustrative description of the above-mentioned terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0046] The following will be combined Figures 1 to 10 The surface layer water pumping device, sedimentation tank and sedimentation system provided by the utility model will be described in detail.

[0047] As Figure 1 , Figures 6 to 10As shown, the first aspect of the utility model provides a kind of surface water pumping device 300.The bottom end of surface water pumping device 300 is arranged at the bottom of the sediment tank body 100, for separating the sediment tank body 100 into left side space and right side space;Surface water pumping device 300 is used to drain the surface clear water of left side space to right side space;From the bottom of left side space, the self-cleaning device is arranged.

[0048] In the embodiment, by setting surface water pumping device 300, it can realize that the clear water of left side space is drained to right side space while dredging, realize continuous operation, improve sedimentation separation efficiency.

[0049] In some embodiments, surface water pumping device 300 includes fixed baffle 310 and water pumping component 320.The front side of fixed baffle 310 is used to seal with the front side inner wall of the sediment tank body 100, and the rear side of fixed baffle 310 is used to seal with the rear side inner wall of the sediment tank body 100, to separate the tank body of the sediment tank body 100 into left side space and right side space.The lower end of water pumping component 320 is hinged with fixed baffle 310, and the front side of water pumping component 320 is used to seal with the front side inner wall, and the rear side of water pumping component 320 is used to seal with the rear side inner wall, and the upper end of water pumping component 320 floats in the water surface of left side space, so that water pumping component 320 floats with water flow;The upper side of water pumping component 320 is provided with overflow groove;Overflow groove is used to overflow the surface water of left side space to right side space.

[0050] In the embodiment, by setting fixed baffle 310, the sediment tank body 100 can be separated into left side space and right side space, wherein left side space can be used for sedimentation operation, and right side space is used for collecting clear water.In addition, fixed baffle 310 can also provide installation base for water pumping component 320.By setting water pumping component 320 hinged with fixed baffle 310, the water pumping component 320 is sealed with the front side inner wall and the rear side inner wall of the sediment tank body 100, and can also float in the water surface of left side space, to realize that the upper clear water of left side space is guided to right side space, so that left side space can be separated while sedimentation, can continuous operation, improve sedimentation separation efficiency.

[0051] In some embodiments, the water scooping component 320 comprises a float assembly 321 and a flexible water blocking assembly 322. The lower end of the float assembly 321 is hinged to the fixed partition 310 so that the float assembly 321 swings left and right; the upper side of the float assembly 321 is provided with a water overflow groove. The flexible water blocking assembly 322 is used to expand or contract in the left-right direction; the lower end of the flexible water blocking assembly 322 is sealingly fitted to the fixed partition 310, and the flexible water blocking assembly 322 is sealingly fitted to the float assembly 321 and the sediment tank body 100. In this embodiment, by providing the float assembly 321 hinged to the fixed partition 310, the surface clean water in the left space can be drained to the right space. By providing the flexible water blocking assembly 322, the freedom of the float assembly 321 in the left-right direction and the up-down direction can be ensured, and at the same time, the water in the left space can be prevented from flowing into the right space through the gap between the float assembly 321 and the front and rear inner walls of the sediment tank body 100.

[0052] Further, the float assembly 321 comprises a float 3211 and a movable baffle 3212. The upper surface of the float 3211 is provided with a water overflow groove in the front-rear direction. The lower end of the movable baffle 3212 is hinged to the fixed partition 310, and the upper end of the movable baffle 3212 is connected to the float 3211; the movable baffle 3212 is sealingly fitted to the flexible water blocking assembly 322. By providing the movable baffle 3212 and the float 3211 at the upper end of the movable baffle 3212, the water scooping efficiency can be improved.

[0053] As shown in Figures 8 to 10 Further, the float 3211 comprises an outer cylinder, the outer cylinder is provided with an inner cylinder mounting hole in the axial direction of the outer cylinder, and an inner cylinder is formed in the inner cylinder mounting hole; the side of the outer cylinder is provided with a water overflow groove, the groove bottom of the water overflow groove is the side of the inner cylinder, the included angle β of the two sides of the water overflow groove is not less than 90° and not greater than 180°. It can be ensured that when the float assembly 321 is in the two limit positions of the vertical position and the horizontal position, the water overflow groove can still drain the surface clean water in the left space to the right space.

[0054] Further, the side of the outer cylinder is provided with a plurality of water overflow grooves, and the plurality of water overflow grooves are arranged in the axial direction of the outer cylinder.

[0055] Preferably, in the axial direction of the outer cylinder, the hole diameters of the inner cylinder mounting holes are equal. In other words, the inner cylinder is in a cylindrical structure.

[0056] Preferably, the outer cylinder is in a cylindrical structure.

[0057] Preferably, the inner cylinder and the outer cylinder can be coaxially arranged. The inner cylinder and the outer cylinder can also be arranged in different axes, in other words, the central axis of the inner cylinder and the central axis of the outer cylinder do not coincide, but are arranged in parallel to each other.

[0058] As shown in Figure 6As shown, further, the flexible water blocking component 322 comprises a first flexible water blocking part 3221 and a second flexible water blocking part 3222; the first flexible water blocking part 3221 and the second flexible water blocking part 3222 are arranged in the front-rear direction. Not only can the movement stability of the floating body assembly 321 be improved, but also the front side and the rear side of the floating body assembly 321 can be sealed while reducing the cost.

[0059] As shown, Figure 7 The first flexible water blocking part 3221 comprises a folding part 3223 and a fixed part 3224; the folding part 3223 is formed on one side of the fixed part 3224, the other side of the fixed part 3224 is sealingly matched with the precipitation tank body 100; the side of the folding part 3223 away from the fixed part 3224 is sealingly matched with the floating body assembly 321. The folding part 3223 can be unfolded or folded along the left-right direction. By arranging the folding part 3223, not only the movement of the floating body assembly 321 can be ensured, but also the right side space with an open upper end is formed by the first flexible water blocking part 3221, the movable baffle 3212 and the precipitation tank body 100. By arranging the fixed part 3224, the sealing matching with the precipitation tank body 100 can be ensured.

[0060] Exemplarily, the first flexible water blocking part 3221 and the second flexible water blocking part 3222 have the same structure.

[0061] As shown, Figure 1 In some embodiments, the upper side of the fixed partition plate 310 is provided with a mounting groove in the axial direction of the fixed partition plate, and a rotating shaft is mounted in the mounting groove and rotationally matched with the water scooping part 320 around the axial direction of the fixed partition plate. By arranging the rotating shaft, the movement freedom of the water scooping part can be limited, and the water scooping part can swing left and right. When the water scooping part is in a vertical state, the groove side wall of the mounting groove also plays a role of water blocking and sealing.

[0062] The second aspect of the utility model provides a kind of precipitation tank. The precipitation tank includes the surface water scooping device 300 of any embodiment described above. Therefore, the precipitation tank of the embodiment has at least the advantages described above, which will not be repeated here.

[0063] In some embodiments, the precipitation tank further comprises a solid-liquid separation device 400. The solid-liquid separation device 400 is located in the left side space and is used to divide the left side space into an upper space and a lower space. The solid-liquid separation device 400 has a first position and a second position. In the first position, the solid-liquid separation device 400 is used for depositing semi-solid precipitates. In the second position, the semi-solid precipitates fall into the lower space. In this embodiment, by arranging the solid-liquid separation device 400, the precipitation operation can be carried out in the upper space, and the self-dredging device can be used to remove the semi-solid precipitates in the lower space, so that continuous operation can be realized and the precipitation separation efficiency can be improved.

[0064] As shown, Figure 1、 Figures 3 to 5 As shown in some embodiments, the solid-liquid separation device 400 comprises a separation assembly 410 and a first driving assembly 420. The separation assembly 410 is arranged in the precipitation tank body 100 to separate the precipitation tank body 100 into an upper space and a lower space; the separation assembly 410 has a first position and a second position; in the first position, the separation assembly 410 is used for precipitating semi-solid precipitate; in the second position, the semi-solid precipitate falls into the lower space. The first driving assembly 420 is connected with the separation assembly 410 and is used for driving the separation assembly 410 to switch between the first position and the second position.

[0065] In the present embodiment, by arranging the separation assembly 410 having the first position and the second position, in the first position, the separation assembly 410 can separate the precipitation tank body 100 into the upper space and the lower space, and can precipitate the semi-solid precipitate received in the upper space. In the second position, the upper space and the lower space are communicated, and the separation assembly 410 can pour the precipitated semi-solid precipitate into the lower space. By arranging the first driving assembly 420, the separation assembly 410 can be driven to switch between the first position and the second position, so that the precipitation tank body 100 can perform sewage precipitation in the upper part and sludge removal in the lower part, realizing continuous operation and improving the precipitation efficiency.

[0066] In some embodiments, the separation assembly 410 comprises a plurality of turnover plates 411; the plurality of turnover plates 411 are arranged in the precipitation tank body 100 along the left-right direction; the first driving assembly 420 is connected with the turnover plates 411 and is used for driving two adjacent turnover plates 411 to turn left and right respectively, so that an opening is formed between the two adjacent turnover plates 411, and the opening is used for allowing the solid to fall into the lower space. By arranging the plurality of turnover plates 411, not only can the semi-solid precipitate be precipitated at the connection between the turnover plates 411, but also when the semi-solid precipitate is poured into the lower space, the disturbance of the semi-solid precipitate to the water in the lower space can be reduced.

[0067] Further, the turnover plates 411 are arranged obliquely, and the plurality of turnover plates 411 are spliced together in the horizontal plane along the left-right direction to form a wave-shaped turnover structure. The disturbance of the semi-solid precipitate to the water in the lower space can be further reduced.

[0068] For example, the first driving assembly 420 drives the adjacent flip plates 411 to move left and right respectively, and the adjacent two flip plates 411 are spliced to form a V-shaped recess, and the plurality of flip plates 411 are spliced to form a wave structure, and the semi-solid precipitate of the sewage in the upper space falls into the recess. The first driving assembly 420 drives the adjacent flip plates 411 to move left and right respectively in the opposite direction, and the bottom of the groove is opened, and the semi-solid precipitate falls into the lower space under the action of its own gravity, and the flip plates 411 can also prevent the sewage in the lower space from flowing back to the upper space.

[0069] As shown in Figure 3 Further, the first included angle α of the recess of the wave-shaped flip structure is not greater than 90°.

[0070] In some embodiments, the number of the first driving assemblies 420 is plural, and the plurality of first driving assemblies 420 correspond to the plurality of flip plates 411 one by one. In other words, one first driving assembly 420 drives one flip plate 411 to rotate. The rotation directions of the adjacent two first driving assemblies 420 are opposite.

[0071] As shown in Figures 3 to 5 In some other embodiments, the first driving assembly 420 includes a plurality of main gears 421 and a first driving structure 422. The plurality of main gears 421 are arranged along the left-right direction, and the adjacent two main gears 421 are connected in meshing. The plurality of main gears 421 correspond to the plurality of flip plates 411 one by one, and the main gear 421 is connected to the corresponding flip plate 411 through the connecting shaft 428. The first driving structure 422 is connected to at least one main gear 421, and is used to drive the adjacent two flip plates 411 to flip forward and backward respectively through the main gear 421. By arranging the plurality of main gears 421 along the left-right direction and connecting the adjacent two main gears 421 in meshing, all the main gears 421 can be driven to rotate by one first driving structure 422, and the rotation directions of the adjacent two main gears 421 are opposite, which is simple in structure and convenient to operate.

[0072] Further, the first driving structure 422 includes a first transmission member 423 and a first driving member 424. One end of the first transmission member 423 is connected to at least one main gear 421, and the first driving member 424 is connected to the other end of the first transmission member 423, and is used to drive at least one main gear 421 to rotate through the first transmission member 423, so that the adjacent two flip plates 411 are flipped left and right respectively. By arranging the first transmission member 423, the installation position of the first driving member 424 can be more diversified.

[0073] For example, the first driving member 424 includes a driving motor. Preferably, the first driving member 424 is a servo motor.

[0074] For example, the first transmission element 423 includes a chain transmission structure or a belt transmission structure.

[0075] like Figure 5 As shown, the first transmission component 423 further includes a screw 426 and a transmission shaft 427. The screw 426 is meshed with at least one main gear 421. One end of the transmission shaft 427 is connected to the screw 426, and the other end is connected to the first driving component 424. Specifically, the servo motor, transmission shaft 427, and screw 426 are coaxially arranged. One end of the transmission shaft 427 is connected to the screw 426, and the other end is connected to the drive end of the servo motor. The servo motor drives the screw 426 to rotate through the transmission shaft 427. The screw 426 is meshed with at least one main gear 421, thereby driving all the main gears 421 to rotate. Driving the main gears 421 through the screw 426 can prevent the force at the end of the main gear 421 from being transmitted to the end of the servo motor, avoiding the problem of the servo motor automatically flipping as the weight of the semi-fixed sediment increases.

[0076] Furthermore, the first drive structure 422 also includes a speed-changing gear 425. The speed-changing gear 425 is meshed with at least one main gear 421, and is connected to the first drive member 424 via the first transmission member 423; the first drive member 424 adjusts the rotational speed of the main gear 421 through the speed-changing gear 425. Specifically, the speed-changing gear 425 is meshed with the screw 426 and the main gear 421, serving to adjust the rotational speed of the main gear 421.

[0077] For example, the transmission gear 425 includes a reduction gear or an acceleration gear. Preferably, the transmission gear 425 is a reduction gear.

[0078] In some embodiments, the sedimentation tank further includes a self-cleaning device 500. The self-cleaning device 500 includes a housing 510, a concentric annular flow channel 520, and a plurality of sewage discharge guiding components 530. The housing 510 is disposed at the bottom of the sedimentation tank body 100; the housing 510 has a polygonal cross-section; the upper part of the housing 510 has an opening, and the bottom of the housing 510 has a sewage discharge port 511. The concentric annular flow channel 520 is disposed inside the housing 510; the sewage discharge port 511 is located inside the concentric annular flow channel 520; the cross-section of the concentric annular flow channel 520 is an inscribed circle of a polygon; a guide port 521 is formed at the position where the concentric annular flow channel 520 is tangent to the inner wall of the housing 510, and the plurality of guide ports 521 cause the water flow to form a circulation within the concentric annular flow channel 520. Multiple sewage diversion components 530 are disposed inside the housing 510 and located outside the concentric annular flow channel 520; the multiple sewage diversion components 530 correspond one-to-one with the inlet 521, and the sewage diversion components 530 are used to divert the sediment located outside the concentric annular flow channel 520 to the corresponding inlet 521.

[0079] In the embodiment, the self-dredging device 500 can be used to remove the sludge at the bottom of the sedimentation tank body 100 by setting the shell 510 at the bottom of the sedimentation tank body 100. By setting the concentric circular annular flow channel 520 inside the shell 510, and the cross section of the concentric circular annular flow channel 520 being a circumscribed circle of a polygon, the position where the concentric circular annular flow channel 520 is tangent to the inner side wall of the shell 510 is provided with a drainage port 521, the sewage entering the concentric circular annular flow channel 520 from the drainage port 521 can form a circular flow in the concentric circular annular flow channel 520, so that the sludge can be discharged into the sewage discharge port 511 with the water flow. By setting the sewage guide assembly 530 inside the shell 510 and outside the concentric circular annular flow channel 520, the sludge outside the concentric circular annular flow channel 520 can be removed, avoiding the occurrence of a dredging dead angle, and ensuring the dredging effect. The embodiment can not use a microfilter when removing the sludge from the sedimentation tank body 100, avoiding the blockage of the filter screen of the microfilter by solid particles, ensuring the dredging effect while reducing the dredging cost.

[0080] As shown in Figure 2 In some embodiments, the concentric circular annular flow channel 520 includes a plurality of annular flow channels 522 and a plurality of drainage plates 523. The plurality of annular flow channels 522 are arranged around the central axis of the shell 510 to splice to form a concentric circular structure, the cross section of the concentric circular structure being a circumscribed circle of a polygon; the drainage port 521 is formed between two adjacent annular flow channels 522; the plurality of annular flow channels 522 are tangent to the sides of the polygon one by one. The plurality of drainage plates 523 correspond to the plurality of annular flow channels 522 one by one; the drainage plate 523 is connected to one end of the annular flow channel 522, and the drainage plate 523 is arranged in a direction parallel to the side wall of the drainage port 521, so that the water flow enters the annular flow channel 522 along the tangent direction of the annular flow channel 522, and forms a circular flow in the annular flow channel 522. In the embodiment, by setting the plurality of annular flow channels 522 arranged around the central axis of the shell 510 to splice to form a concentric circular structure, the water flow entering the concentric circular structure can be made to flow as much as possible in a circular manner, ensuring the effect of automatic dredging. By arranging the drainage plate 523 in a direction parallel to the side wall of the drainage port 521, the water flow can enter the annular flow channel 522 along the tangent direction of the annular flow channel 522, and form a circular flow.

[0081] As shown in Figure 2As shown, in some embodiments, the pollution drainage guide assembly 530 comprises a guide baffle 531 and a pollution water spraying element 532. The guide baffle 531 is obliquely arranged between two adjacent inner side walls of the shell 510, for guiding the sewage outside the concentric circular annular flow channel 520 to the inside of the concentric circular annular flow channel 520 through the corresponding drainage port 521. The pollution water spraying element 532 is arranged outside the concentric circular annular flow channel 520, and the pollution water spraying element 532 and the corresponding drainage port 521 are respectively located on the two sides of the corresponding guide baffle 531. The pollution water spraying element 532 is used for spraying water to the side of the guide baffle 531 facing the concentric circular annular flow channel 520. In this embodiment, by arranging the guide baffle between the two adjacent inner side walls of the shell 510, the sludge can be prevented from accumulating at the corner of the two adjacent inner side walls, and the water flow can also be guided to the drainage port 521. By arranging the pollution water spraying element 532 on the side of the guide baffle away from the drainage port 521, not only the sludge accumulated at the guide baffle can be removed, but also the water flow discharged from the pollution water spraying element 532 can flow towards the drainage port 521 through the guide baffle 531.

[0082] Further, the cross section of the shell 510 is a square. Of course, the cross section of the shell 510 can also be a pentagon, a hexagon or a heptagon, etc.

[0083] Further, the guide baffle 531 and the inner side wall of the shell 510 form a third included angle γ of 45°. The water flow sprayed by the pollution water spraying element 532 can be completely guided to the drainage port 521.

[0084] Further, the length L of the right angle side of the right triangle formed by the guide baffle 531 and the inner side wall of the shell 510 is greater than the diameter of the water spraying port of the pollution water spraying element 532. The water flow sprayed by the pollution water spraying element 532 can be completely guided to the drainage port 521.

[0085] Preferably, the length L of the right angle side is 1-2 times the diameter of the water spraying port of the pollution water spraying element 532.

[0086] As Figure 1 and Figure 6As shown, in some embodiments, the sedimentation tank further comprises a water inlet device 200. The water inlet device 200 is located above the self-dredging device 500; the water inlet device 200 comprises a water inlet main pipe 210 and a water inlet branch pipe 220. One end of the water inlet main pipe 210 is in communication with a water source. One end of the water inlet branch pipe 220 is in communication with the water source, and the other end is in communication with the other end of the water inlet main pipe 210; the water inlet branch pipe 220 is provided with a plurality of water outlets along the axial direction of the water inlet branch pipe 220, and the plurality of water outlets are arranged at intervals. By connecting one end of the water inlet branch pipe 220 with the water inlet main pipe 210 and the other end with the water source, water can be supplied from both directions of the water inlet branch pipe 220. In combination with the plurality of water outlets arranged along the axial direction of the water inlet branch pipe 220, the flow rate and flow volume of the water discharged from the water inlet device 200 to the sedimentation tank body 100 can be reduced, thereby reducing the disturbance to the water body in the sedimentation tank.

[0087] Further, the water inlet device 200 further comprises a plurality of drainage pipes 230, which are arranged at intervals along the axial direction of the water inlet branch pipe 220 and are in communication with the water inlet branch pipe 220. The drainage pipe 230 is horizontally arranged and has drainage openings at both ends. The disturbance to the water body in the sedimentation tank body 100 can be further reduced.

[0088] The specific embodiments of the third aspect of the utility model provide a sedimentation system. The sedimentation system comprises a plurality of sedimentation tanks of any of the above embodiments. The plurality of sedimentation tanks are arranged in series and are in communication one after another, or the plurality of sedimentation tanks are arranged in parallel.

[0089] When the plurality of sedimentation tanks are arranged in series, the clear water treated by the previous stage is continuously supplied to the next stage for treatment, so that the purification effect of the aquaculture wastewater can be improved, and the treatment efficiency and total treatment capacity can be improved. When the plurality of sedimentation tanks are arranged in parallel, the treatment efficiency of the continuous sedimentation of the pollutants can be improved.

[0090] For example, the sedimentation system comprises a plurality of sedimentation tanks; the plurality of sedimentation tanks are arranged in parallel, and the wastewater flows into the single sedimentation tank one after another, during which more standing sedimentation time can be provided for other sedimentation tanks, and the treatment efficiency of the continuous sedimentation of the pollutants can be further improved.

[0091] Specifically, the sedimentation system comprises three sedimentation tanks; the three sedimentation tanks are arranged in parallel; after the first sedimentation tank is filled with wastewater, the water injection is stopped, and the second sedimentation tank is injected with water. After the second sedimentation tank is filled with wastewater, the water injection is stopped, and the third sedimentation tank is injected with water. During the water injection, the other sedimentation tanks are subjected to sedimentation, and more standing sedimentation time can be provided for other sedimentation tanks, and the treatment efficiency of the continuous sedimentation of the pollutants can be further improved.

[0092] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been explained in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A surface water intake device, characterized in that Comprise: A fixed partition (310), the front side of the fixed partition (310) is used for sealing cooperation with the front side inner wall of the precipitation tank body (100), the rear side of the fixed partition (310) is used for sealing cooperation with the rear side inner wall of the precipitation tank body (100), so as to separate the tank body of the precipitation tank body (100) into left and right spaces; A water pumping component (320), the lower end of the water pumping component (320) is hinged with the fixed partition (310), the front side of the water pumping component (320) is used for sealing cooperation with the front side inner wall, the rear side of the water pumping component (320) is used for sealing cooperation with the rear side inner wall, and the upper end of the water pumping component (320) floats on the water surface of the left space, so that the water pumping component (320) floats with the water flow; The upper side of the water pumping component (320) is provided with a water overflow groove; The water overflow groove is used for overflowing the surface water of the left space to the right space.

2. The surface water scooping device according to claim 1, characterized in that The water pumping component (320) comprises: A floating body assembly (321), the lower end of the floating body assembly (321) is hinged with the fixed partition (310), so that the floating body assembly (321) swings left and right; The upper side of the floating body assembly (321) is provided with the water overflow groove; A flexible water blocking assembly (322) is used for unfolding or folding along the left and right directions; The lower end of the flexible water blocking assembly (322) is sealingly cooperated with the fixed partition (310), and the flexible water blocking assembly (322) is sealingly cooperated with the floating body assembly (321) and the precipitation tank body (100).

3. The surface water scooping device according to claim 2, characterized in that The floating body assembly (321) comprises: A floating body (3211), the upper surface of the floating body (3211) is provided with the water overflow groove along the front and rear directions; A movable baffle (3212), the lower end of the movable baffle (3212) is hinged with the fixed partition (310), and the upper end of the movable baffle (3212) is connected with the floating body (3211); The movable baffle (3212) is sealingly cooperated with the flexible water blocking assembly (322).

4. The surface water scooping device according to claim 3, characterized in that The floating body (3211) comprises an outer cylinder; The outer cylinder is provided with an inner cylinder mounting hole along the axial direction of the outer cylinder, and an inner cylinder is formed in the inner cylinder mounting hole; The side of the outer cylinder is provided with a water overflow groove, and the groove bottom of the water overflow groove is the side of the inner cylinder.

5. The surface water scooping device according to claim 4, characterized in that The included angle β of the two sides of the water overflow groove is not less than 90° and not more than 180°.

6. The surface water scooping device of claim 2, wherein The flexible water blocking assembly (322) comprises a first flexible water blocking piece (3221) and a second flexible water blocking piece (3222); The first flexible water blocking piece (3221) and the second flexible water blocking piece (3222) are arranged in the front and rear directions.

7. The surface water scooping device according to claim 6, characterized in that The first flexible water blocking piece (3221) comprises a folding part (3223) and a fixed part (3224); The folding part (3223) is formed on one side of the fixed part (3224), the other side of the fixed part (3224) is sealingly cooperated with the precipitation tank body (100); The side of the folding part (3223) away from the fixed part (3224) is sealingly cooperated with the floating body assembly (321).

8. The surface water scooping device according to any one of claims 1 to 6, characterized in that The upper side of the fixed partition plate (310) is provided with a mounting groove along the axial direction of the fixed partition plate (310), and a rotating shaft (330) is mounted in the mounting groove, and the rotating shaft (330) is in rotational cooperation with the water scooping part (320) around the axial direction of the fixed partition plate (310).

9. A sedimentation tank, characterized in that The surface water scooping device comprises the surface water scooping device according to any one of claims 1 to 8.

10. A precipitation system, characterized by, The surface water scooping device comprises a plurality of the sedimentation tanks according to claim 9; the plurality of the sedimentation tanks are arranged in series and sequentially communicated; or the plurality of the sedimentation tanks are arranged in parallel.

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