Settling tank

Abstract

The invention relates to the technical field of sewage treatment, and discloses a precipitation tank. The precipitation tank comprises a precipitation tank body, a surface layer water drawing device and a solid-liquid isolation device, the surface layer water drawing device is positioned above the precipitation tank body and is used for guiding clean water on the surface layer of the precipitation tank body to the clean water collecting tank; the solid-liquid isolation device is positioned in the middle of the precipitation tank body and is used for dividing the precipitation tank body into an upper space and a lower space; the solid-liquid isolation device is provided with a first position and a second position; at the first position, the solid-liquid isolation device is used for bearing semi-solid precipitates settled in the upper space; in the second position, the semi-solid precipitate falls into the lower space. By arranging the surface layer water drawing device and the solid-liquid isolation device, drainage of surface layer clear water does not need to be stopped when the precipitation tank is used for discharging sewage, that is, the precipitation tank can work continuously, and the precipitation separation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a sedimentation tank. Background Art

[0002] The key particulate suspended solids (such as fish feces, leftover bait, mucus, impurities and adherent dirt, etc.) in aquaculture wastewater are separated and purified through natural sedimentation, and the sediment can be automatically discharged regularly to keep the sedimentation device running continuously.

[0003] At present, cement sedimentation tanks are generally built according to a certain proportion of the aquaculture water body, and the dirt in the water is separated and removed by natural sedimentation. When the dirt in the sedimentation tank reaches a certain thickness (which may affect the sedimentation effect), the water in the sedimentation tank is drained and the dirt (sludge) deposited at the bottom of the tank is manually removed. There is a problem that the sedimentation tank cannot work continuously. In addition, microfiltration machines are used to separate the solid and liquid of aquaculture wastewater, which increases the cost of aquaculture.

[0004] The use of sedimentation tanks to separate and purify aquaculture wastewater has problems such as large footprint and limited treatment efficiency. At the same time, due to the large amount of sludge produced, the sedimentation tank needs to be emptied regularly for manual removal, and continuous treatment is not possible. Not only is the workload large and the environment harsh, but if not handled properly, it may cause secondary pollution.

[0005] Since fish feces, leftover bait and other wastes decompose in the water, the particles are very small. When using a microfiltration machine for separation, if the filter mesh diameter is too small, the aquaculture wastewater is rich in organic matter, which is very easy to decompose and breed bacteria (producing biofilm or mucus), clogging the filter mesh; if the filter mesh diameter is too large, it will not have a filtering effect. Summary of the invention

[0006] In order to solve at least one of the problems existing in the background technology, the present invention provides a sedimentation tank.

[0007] The present invention provides a sedimentation tank, comprising: Sedimentation tank body: A surface water drawing device, located above the sedimentation tank body, for drawing clean water from the surface of the sedimentation tank body to a clean water collection tank; The solid-liquid isolation device is located in the middle of the sedimentation tank body and is used to separate the sedimentation tank body into an upper space and a lower space; the solid-liquid isolation device has a first position and a second position; in the first position, the solid-liquid isolation device is used to carry the semi-solid sediment settled in the upper space; in the second position, the semi-solid sediment falls into the lower space.

[0008] According to the sedimentation tank provided by the present invention, the solid-liquid separation device comprises: An isolation component is located in the middle of the sedimentation tank body to separate the sedimentation tank body into the upper space and the lower space; the isolation component has a first position and a second position; The first driving component is installed on the sedimentation tank body and connected to the isolation component, and is used to drive the isolation component to switch between the first position and the second position.

[0009] According to the sedimentation tank provided by the present invention, the isolation assembly comprises: A plurality of flip plates are laid in the sedimentation tank body along the left-right direction; the first driving component is connected to the flip plates, and is used to drive two adjacent flip plates to flip left and right respectively, so that an opening is formed between the two adjacent flip plates, and the opening is used for the semi-solid sediment to fall into the lower space.

[0010] According to the sedimentation tank provided by the present invention, the surface water pumping device comprises: A connecting component, mounted on the sedimentation tank body; A water-drawing component, the lower end of which is hinged to the connecting component, and the upper end of which floats on the water surface of the sedimentation tank body, and is used to guide surface clean water to the clean water collecting tank.

[0011] According to the sedimentation tank provided by the present invention, the connecting component comprises: A fixed partition, wherein the front side surface of the fixed partition is sealed with the front inner wall of the sedimentation tank body, and the rear side surface of the fixed partition is sealed with the rear inner wall of the sedimentation tank body, so as to separate the sedimentation tank body into a left space and a right space.

[0012] According to the sedimentation tank provided by the present invention, the water-drawing component comprises: A floating assembly, the lower end of which is hinged to the fixed partition so that the floating assembly can swing left and right; an overflow groove is provided on the upper side of the floating assembly; The flexible water retaining assembly is used to expand or retract along the left-right direction; the lower end of the flexible water retaining assembly is sealed with the fixed partition, and the flexible water retaining assembly is sealed with the floating body assembly and the sedimentation tank body.

[0013] According to the sedimentation tank provided by the present invention, the floating body assembly comprises: A floating body, wherein the overflow groove is provided on the upper surface of the floating body along the front-rear direction; A movable baffle, the lower end of which is hinged to the fixed partition, and the upper end of which is connected to the floating body; the movable baffle is sealed and matched with the flexible water retaining assembly.

[0014] According to the sedimentation tank provided by the present invention, the sedimentation tank further comprises: A self-dredging device is arranged at the bottom of the sedimentation tank body and is used to guide the semi-solid sediment in the lower space to the sewage outlet.

[0015] According to the sedimentation tank provided by the present invention, the self-dredging device comprises: A shell is used to be arranged at the bottom of the sedimentation tank body; the cross section of the shell is polygonal; the upper part of the shell has an opening, and the bottom of the shell has the sewage outlet; A concentric annular flow channel is arranged in the shell; the sewage outlet is located on the inner side of the concentric annular flow channel; the cross section of the concentric annular flow channel is the inscribed circle of the polygon; a drainage port is formed at a position where the concentric annular flow channel is tangent to the inner side wall of the shell, and a plurality of the drainage ports enable the water flow to form a circulation in the concentric annular flow channel; A plurality of sewage diversion assemblies are arranged in the shell and located outside the concentric annular flow channel; the plurality of sewage diversion assemblies correspond to the drainage ports one by one, and the sewage diversion assemblies are used to guide the sediment located outside the concentric annular flow channel to the corresponding drainage ports.

[0016] According to the sedimentation tank provided by the present invention, the concentric annular flow channel comprises: A plurality of annular flow channels are arranged around the central axis of the shell to form a concentric circle structure, the cross section of the concentric circle structure is an inscribed circle of the polygon; the drainage port is formed between two adjacent annular flow channels; the plurality of annular flow channels are tangent to the sides of the polygon in a one-to-one correspondence; A plurality of guide plates correspond one to one with the plurality of annular flow channels; the guide plate is connected to one end of the annular flow channel, and the guide plate is arranged in a direction parallel to the side wall of the drainage port, so that water flows into the annular flow channel along the inner tangent direction of the annular flow channel and forms a circulation in the annular flow channel.

[0017] The sedimentation tank provided by the present invention is provided with a surface water drawing device above the sedimentation tank body, and the surface water drawing device can drain the clean water on the surface of the sedimentation tank body to the clean water collecting tank. By providing a solid-liquid isolation device at the middle position of the sedimentation tank body, the solid-liquid isolation device can separate the sedimentation tank body into an upper space and a lower space, and the solid-liquid isolation device has a first position and a second position. In the first position, the solid-liquid isolation device can carry semi-solid sediments; in the second position, the semi-solid sediments carried by the solid-liquid isolation device fall into the lower space. Due to the provision of the solid-liquid isolation device, when the sedimentation tank is discharging sewage, it is not necessary to stop draining the surface clean water, that is, the sedimentation tank of this embodiment can operate continuously, thereby improving the sedimentation separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is one of the schematic cross-sectional views of the sedimentation tank provided by the present invention.

[0020] Figure 2 This is one of the structural schematic diagrams of the self-dredging device provided by the present invention.

[0021] Figure 3 This is one of the structural schematic diagrams of the solid-liquid isolation device provided by the present invention.

[0022] Figure 4 This is one of the structural schematic diagrams of the solid-liquid isolation device provided by the present invention when viewed from above.

[0023] Figure 5 This is one of the structural schematic diagrams of the first driving component of the solid-liquid isolation device provided by the present invention.

[0024] Figure 6 It is one of the structural schematic diagrams of the surface water drawing device and the water inlet device provided by the present invention when viewed from above.

[0025] Figure 7 It is one of the structural schematic diagrams of the first flexible water retaining member of the surface water drawing device provided by the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the floating body of the surface water drawing device provided by the present invention.

[0027] Fig. 9 It is a schematic structural diagram of the floating body of the surface water-drawing device provided by the present invention under the main visual field.

[0028] Fig.10 yes Fig. 9 Schematic diagram of the structure of the AA section.

[0029] Reference numerals: 100. Sedimentation tank body; 200, water inlet device; 210, water inlet main pipeline; 220, water inlet branch pipeline; 230, drainage pipe; 300, surface water pumping device; 310, fixed baffle; 320, water pumping component; 330, rotating shaft; 321, floating body assembly; 322, flexible water retaining assembly; 3211, floating body; 3212, movable baffle; 3221, first flexible water retaining member; 3222, second flexible water retaining member; 3223, folding portion; 3224, fixed portion; 400, solid-liquid isolation device; 410, isolation assembly; 411, flip plate; 420, first drive assembly; 421, main gear; 422, first drive structure; 423, first transmission member; 424, first drive member; 425, speed change gear; 426, screw; 427, transmission shaft; 428, connecting shaft; 500, self-dredging device; 510, housing; 520, concentric annular flow channel; 530, sewage diversion assembly; 511, sewage outlet; 521, diversion outlet; 522, annular flow channel; 523, diversion plate; 531, diversion baffle; 532, sewage spraying member. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0032] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0034] Combine the following Figures 1 to 10 The precipitation tank of the present invention is described in detail.

[0035] like Figure 1 As shown, a specific embodiment of the present invention provides a sedimentation tank. The sedimentation tank includes a sedimentation tank body, a surface water pumping device and a solid-liquid separation device. The surface water pumping device is located above the sedimentation tank body, and is used to drain the clean water on the surface of the sedimentation tank body to the clean water collection tank. The solid-liquid separation device is located in the middle of the sedimentation tank body, and is used to separate the sedimentation tank body into an upper space and a lower space; the solid-liquid separation device has a first position and a second position; in the first position, the solid-liquid separation device is used to carry the semi-solid sediment settled in the upper space; in the second position, the semi-solid sediment falls into the lower space.

[0036] In this embodiment, by arranging a surface water pumping device above the sedimentation tank body, the surface water pumping device can drain the clean water on the surface of the sedimentation tank body to the clean water collection tank. By arranging a solid-liquid isolation device in the middle position of the sedimentation tank body, the solid-liquid isolation device can separate the sedimentation tank body into an upper space and a lower space, and the solid-liquid isolation device has a first position and a second position. In the first position, the solid-liquid isolation device can carry semi-solid sediments; in the second position, the semi-solid sediments carried by the solid-liquid isolation device fall into the lower space. Because of the setting of the solid-liquid isolation device, when the sedimentation tank is discharging sewage, it is not necessary to stop draining the surface clean water, that is, the sedimentation tank of this embodiment can operate continuously, which improves the sedimentation separation efficiency.

[0037] In some embodiments, the sedimentation tank further comprises a self-dredging device, which is arranged at the bottom of the sedimentation tank body and is used to guide the semi-solid sediment in the lower space to the sewage outlet.

[0038] like Figure 1 and Figure 2As shown, further, the self-dredging device 500 includes a shell 510, a concentric annular flow channel 520 and a plurality of sewage diversion components 530. The shell 510 is used to be arranged at the bottom of the sedimentation tank body 100; the cross section of the shell 510 is polygonal; the upper part of the shell 510 has an opening, and the bottom of the shell 510 has a sewage outlet 511. The concentric annular flow channel 520 is arranged in the shell 510; the sewage outlet 511 is located on the inner side of the concentric annular flow channel 520; the cross section of the concentric annular flow channel 520 is a polygonal inscribed circle; a drainage outlet 521 is formed at a position where the concentric annular flow channel 520 is tangent to the inner side wall of the shell 510, and the plurality of drainage outlets 521 allow the water flow to form a circulation in the concentric annular flow channel 520. Multiple sewage diversion components 530 are arranged in the shell 510 and are located on the outside of the concentric annular flow channel 520; multiple sewage diversion components 530 correspond one-to-one to the drainage port 521, and the sewage diversion components 530 are used to divert the sediment located on the outside of the concentric annular flow channel 520 to the corresponding drainage port 521.

[0039] In this embodiment, by setting the shell 510 at the bottom of the sedimentation tank body 100, the self-dredging device 500 of this embodiment can be used to remove the sludge at the bottom of the sedimentation tank body 100. By setting the concentric annular flow channel 520 inside the shell 510, and the cross section of the concentric annular flow channel 520 is a polygonal inscribed circle, and the concentric annular flow channel 520 is tangent to the inner wall of the shell 510. A drainage port 521 is formed, so that the sewage entering the concentric annular flow channel 520 from the drainage port 521 can form a circulation in the concentric annular flow channel 520, so that the sludge can be discharged into the sewage outlet 511 along with the water flow. By setting the sewage diversion assembly 530 inside the shell 510 and outside the concentric annular flow channel 520, the sludge outside the concentric annular flow channel 520 can be removed, and the dredging dead corner can be avoided to ensure the dredging effect.

[0040] like Figure 2As shown, further, the concentric annular flow channel 520 includes a plurality of annular flow channels 522 and a plurality of guide plates 523. The plurality of annular flow channels 522 are arranged around the central axis of the housing 510 to form a concentric circle structure, and the cross section of the concentric circle structure is an inscribed circle of a polygon; a guide port 521 is formed between two adjacent annular flow channels 522; and the plurality of annular flow channels 522 are arranged tangent to the edges of the polygon in a one-to-one correspondence. The plurality of guide plates 523 correspond to the plurality of annular flow channels 522 in a one-to-one correspondence; the guide plate 523 is connected to one end of the annular flow channel 522, and the guide plate 523 is arranged in a direction parallel to the side wall of the guide port 521, so that the water flows into the annular flow channel 522 along the inner tangent direction of the annular flow channel 522, and forms a circulation in the annular flow channel 522. In this embodiment, by arranging a plurality of annular flow channels 522 arranged around the central axis of the housing 510 to form a concentric circle structure, the water flow entering the concentric circle structure can be made to flow in a circular manner as much as possible, thereby ensuring the effect of automatic silt removal. By arranging a diversion port 521 in a direction parallel to the side wall of the diversion port 521, the water flow can enter the annular flow channel 522 in the direction of the inner tangent of the annular flow channel 522 and form a circulation.

[0041] like Figure 2 As shown, further, the sewage diversion assembly 530 includes a diversion baffle 531 and a sewage spraying member 532. The diversion baffle 531 is obliquely arranged between two adjacent inner side walls of the housing 510, and is used to divert the sewage located outside the concentric annular flow channel 520 to the inside of the concentric annular flow channel 520 through the corresponding drainage port 521. The sewage spraying member 532 is arranged on the outside of the concentric annular flow channel 520, and the sewage spraying member 532 and the corresponding drainage port 521 are respectively located on both sides of the corresponding diversion baffle 531, and the sewage spraying member 532 is used to spray water from the diversion baffle 531 toward one side of the concentric annular flow channel 520. In this embodiment, by arranging a diversion plate between two adjacent inner side walls of the housing 510, sludge can be prevented from gathering at the corners of the two adjacent inner side walls, and water can also be guided to the drainage port 521. By arranging a sewage spraying member 532 on the side of the guide plate away from the drainage port 521 , not only can the sludge accumulated at the guide plate be removed, but the water discharged from the sewage spraying member 532 can also flow toward the drainage port 521 through the guide baffle 531 .

[0042] Furthermore, the cross section of the housing 510 is a square. Of course, the cross section of the housing 510 can also be a pentagon, a hexagon, a heptagon, or the like.

[0043] like Figure 2 As shown, further, a third angle γ of 45° is formed between the guide baffle 531 and the inner wall of the housing 510 , so that all the water sprayed by the sewage spraying member 532 can be directed to the drainage port 521 .

[0044] Furthermore, 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 housing 510 is greater than the diameter of the water spray port of the sewage spray member 532. All the water sprayed by the sewage spray member 532 can be directed to the drainage port 521.

[0045] Preferably, the length L of the right-angle side is 1 to 2 times the diameter of the water spray port of the sewage spray member 532.

[0046] like Figure 1 and Figure 6 As shown, in some embodiments, the sedimentation tank further includes a water inlet device 200. The water inlet device 200 is located above the self-dredging device 500; the water inlet device 200 includes a water inlet main pipeline 210 and a water inlet branch pipeline 220. One end of the water inlet main pipeline 210 is connected to a water source. One end of the water inlet branch pipeline 220 is connected to the water source, and the other end is connected to the other end of the water inlet main pipeline 210; the water inlet branch pipeline 220 is provided with a plurality of water outlets along its own axial direction, and the plurality of water outlets are arranged at intervals. By connecting one end of the water inlet branch pipeline 220 to the water inlet main pipeline 210 and the other end to the water source, water can be inletted from two directions of the water inlet branch pipeline 220. Combined with the plurality of water outlets arranged along the axial direction of the water inlet branch pipeline 220, the water flow velocity and flow rate discharged from the water inlet device 200 to the sedimentation tank body 100 can be reduced, thereby reducing the disturbance of the water body in the sedimentation tank caused thereby.

[0047] Furthermore, the water inlet device 200 further includes a plurality of drain pipes 230, which are arranged at intervals along the axial direction of the water inlet branch pipe 220 and are connected to the water inlet branch pipe 220. The drain pipes 230 are arranged horizontally and have drain ports at both ends, which can further reduce the disturbance of the water body in the sedimentation tank body 100.

[0048] like Figure 1 , Figures 6 to 10 As shown, in some embodiments, the sedimentation tank includes a surface water pumping device 300. The surface water pumping device 300 includes a connecting component and a water pumping component 320; the connecting component is installed on the sedimentation tank body 100; the lower end of the water pumping component 320 is hinged to the connecting component, and the upper end of the water pumping component 320 floats on the water surface of the sedimentation tank body 100, which is used to drain the surface clean water to the clean water collection tank.

[0049] In this embodiment, by providing a surface water pumping device 300, it is possible to drain the surface clean water to the clean water collection tank while desilting, thereby achieving continuous operation and improving sedimentation separation efficiency.

[0050] like Figure 1 , Figures 6 to 10As shown, in some embodiments, the bottom end of the surface water drawing device 300 is arranged at the bottom of the sedimentation tank body 100, and is used to separate the sedimentation tank body 100 into a left space and a right space; the surface water drawing device 300 is used to drain the surface clean water in the left space to the right space; the self-dredging device 500 is arranged at the bottom of the left space. In this embodiment, by setting the surface water drawing device 300, it is possible to drain the clean water in the left space to the right space while dredging, realize continuous operation, and improve the sedimentation separation efficiency.

[0051] Furthermore, the connecting component includes a fixed partition 310; the front side of the fixed partition 310 is sealed with the front inner wall of the sedimentation tank body 100, and the rear side of the fixed partition 310 is sealed with the rear inner wall of the sedimentation tank body 100, so as to separate the sedimentation tank body 100 into a left space and a right space. In this embodiment, by setting the fixed partition 310, the sedimentation tank body 100 can be separated into a left space and a right space, wherein the left space can be used for sedimentation operation, and the right space is used to collect clean water. In addition, the fixed partition 310 can also provide an installation base for the water-drawing component 320.

[0052] Specifically, the lower end of the water-drawing component 320 is hinged to the fixed partition 310, the front side of the water-drawing component 320 is used to seal with the front inner wall, the rear side of the water-drawing component 320 is used to seal with the rear inner wall, and the upper end of the water-drawing component 320 floats on the water surface of the left space, so that the water-drawing component 320 floats with the water flow; the upper side of the floating body assembly 321 is provided with an overflow groove; the overflow groove is used to overflow the surface water of the left space to the right space. By setting the water-drawing component 320 hinged to the fixed partition 310, the water-drawing component 320 is sealed with the front inner wall and the rear inner wall of the sedimentation tank body 100, and can also float on the water surface of the left space, so as to realize the diversion of the upper layer of clean water in the left space to the right space, so that the left space can be separated into solid and liquid while sedimentation, and can be operated continuously, thereby improving the sedimentation separation efficiency.

[0053] In some embodiments, the water-drawing component 320 includes 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; an overflow groove is provided on the upper side of the float assembly 321. The flexible water-blocking assembly 322 is used to expand or retract in the left and right directions; the lower end of the flexible water-blocking assembly 322 is sealed with the fixed partition 310, and the flexible water-blocking assembly 322 is sealed with the float assembly 321 and the sedimentation tank body 100. In this embodiment, by setting 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 setting the flexible water-blocking assembly 322, while ensuring that the float assembly 321 has the degree of freedom in the left and right directions and the up and down directions, it can also prevent the water in the left space from flowing into the right space through the gap between the float assembly 321 and the front inner wall and the rear inner wall of the sedimentation tank body 100.

[0054] Furthermore, the floating body assembly 321 includes a floating body 3211 and a movable baffle 3212. The upper surface of the floating body 3211 is provided with an overflow groove along the front-back 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 floating body 3211; the movable baffle 3212 is sealed and matched with the flexible water retaining assembly 322. By providing the movable baffle 3212 and providing the floating body 3211 at the upper end of the movable baffle 3212, the water drawing efficiency can be improved.

[0055] like Figures 8 to 10 As shown, further, the float 3211 includes an outer cylinder, the outer cylinder is provided with an inner cylinder mounting hole along its own axis, and the inner cylinder is formed in the inner cylinder mounting hole; an overflow groove is provided on the side of the outer cylinder, the bottom of the overflow groove is the side of the inner cylinder, and the angle β between the two sides of the overflow groove is not less than 90° and not greater than 180°. It can ensure that when the float assembly 321 is in the two extreme positions of the vertical position and the horizontal position, the overflow groove can still drain the surface clean water of the left space to the right space.

[0056] Furthermore, a plurality of overflow grooves are provided on the side surface of the outer cylinder, and the plurality of overflow grooves are arranged at intervals along the axial direction of the outer cylinder.

[0057] Preferably, along the axial direction of the outer cylinder itself, the diameters of the mounting holes of the inner cylinder are equal. In other words, the inner cylinder is a cylindrical structure.

[0058] Preferably, the outer cylinder is a cylindrical structure.

[0059] Preferably, the inner cylinder and the outer cylinder can be arranged coaxially. The inner cylinder and the outer cylinder can also be arranged non-coaxially, in other words, the central axis of the inner cylinder does not coincide with the central axis of the outer cylinder, but is arranged parallel to each other.

[0060] like Figure 6As shown, further, the flexible water retaining assembly 322 includes a first flexible water retaining member 3221 and a second flexible water retaining member 3222; the first flexible water retaining member 3221 and the second flexible water retaining member 3222 are arranged at intervals along the front-to-back direction. This can not only improve the movement stability of the floating assembly 321, but also achieve sealing of the front and rear sides of the floating assembly 321 while reducing costs.

[0061] like Figure 7 As shown, the first flexible water retaining member 3221 includes a folding portion 3223 and a fixing portion 3224; the folding portion 3223 is formed on one side of the fixing portion 3224, and the other side of the fixing portion 3224 is sealed with the sedimentation tank body 100; the side of the folding portion 3223 away from the fixing portion 3224 is sealed with the floating body assembly 321. The folding portion 3223 can be unfolded or folded in the left and right directions. By setting the folding portion 3223, not only can the movement of the floating body assembly 321 be ensured, but also the first flexible water retaining member 3221, the movable baffle 3212 and the sedimentation tank body 100 enclose the right side space of the upper end opening. By setting the fixing portion 3224, it can ensure the sealing cooperation with the sedimentation tank body 100.

[0062] Exemplarily, the first flexible water retaining member 3221 and the second flexible water retaining member 3222 have the same structure.

[0063] like Figure 1 As shown, in some embodiments, the upper side of the fixed partition 310 is provided with a mounting groove along its own axial direction, and a rotating shaft is installed in the mounting groove, and the rotating shaft cooperates with the water-drawing component to rotate around the axial direction of the fixed partition. By setting the rotating shaft, the movement freedom of the water-drawing component can be limited to ensure that the water-drawing component can swing left and right. When the water-drawing component is in a vertical state, the groove side wall of the mounting groove also plays the role of water-blocking seal.

[0064] like Figure 1 , Figures 3 to 5 As shown, in some embodiments, the sedimentation tank further includes a solid-liquid separation device 400. The solid-liquid separation device 400 is located in the left space, and is used to separate the left 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 to precipitate semi-solid sediments; in the second position, the semi-solid sediments fall into the lower space. In this embodiment, by setting the solid-liquid separation device 400, sedimentation operations can be performed in the upper space, and the self-dredging device 500 can be used in the lower space to achieve the removal of semi-solid sediments, which can be operated continuously and improve the sedimentation separation efficiency.

[0065] like Figure 1 , Figures 3 to 5As shown, in some embodiments, the solid-liquid isolation device 400 includes an isolation component 410 and a first drive component 420. The isolation component 410 is located in the middle of the sedimentation tank body 100 to separate the sedimentation tank body 100 into an upper space and a lower space; the isolation component 410 has a first position and a second position; in the first position, the isolation component 410 is used to precipitate semi-solid sediment; in the second position, the semi-solid sediment falls into the lower space. The first drive component 420 is connected to the isolation component 410 and is used to drive the isolation component 410 to switch between the first position and the second position.

[0066] In this embodiment, by setting the isolation assembly 410 with a first position and a second position, in the first position, the isolation assembly 410 can separate the sedimentation tank body 100 into an upper space and a lower space to carry the semi-solid sediment of sewage precipitation in the upper space. In the second position, the upper space and the lower space can be connected, and the semi-solid sediment carried by the isolation assembly 410 slides into the lower space. By setting the first drive assembly 420, the isolation assembly 410 can be driven to switch between the first position and the second position, so that sewage can be precipitated in the upper part of the sedimentation tank body 100, and sludge can be removed in the lower part, so as to achieve continuous operation and improve sedimentation efficiency.

[0067] In some embodiments, the isolation assembly 410 includes a plurality of flip plates 411; the plurality of flip plates 411 are laid in the sedimentation tank body 100 along the left-right direction; the first driving assembly 420 is connected to the flip plates 411, and is used to drive two adjacent flip plates 411 to flip leftward and rightward respectively, so that an opening is formed between the two adjacent flip plates 411, and the opening is used for solids to fall into the lower space. By providing a plurality of flip plates 411, not only can the semi-solid sediment be deposited at the connection between the flip plates 411, but also when the semi-solid sediment is poured into the lower space, the disturbance of the semi-solid sediment to the water body in the lower space can be reduced.

[0068] Furthermore, the flip plates 411 are tilted, and a plurality of flip plates 411 are spliced ​​together in the horizontal plane along the left and right directions to form a wave-shaped flip structure, which can further reduce the disturbance of the semi-solid sediment to the water body in the lower space.

[0069] Exemplarily, the first driving assembly 420 rotates forward to drive the adjacent flip plates 411 to move leftward and rightward, respectively. Two adjacent flip plates 411 are spliced ​​together to form a concave portion with a V-shaped cross section. At the same time, multiple flip plates 411 are spliced ​​together to form a wave-shaped structure. The semi-solid sediment generated by the sewage precipitation in the upper space falls into the concave portion. The first driving assembly 420 rotates reversely to drive the adjacent flip plates 411 to move leftward and rightward, respectively. The bottom of the groove opens, and the semi-fixed sediment falls into the lower space under the action of its own gravity. At this time, the flip plate 411 can also prevent the sewage in the lower space from flowing back to the upper space.

[0070] like Figure 3 As shown, further, the first angle α of the concave portion of the wave-shaped inversion structure is not greater than 90°.

[0071] In some embodiments, there are multiple first drive components 420, and the multiple first drive components 420 correspond one to one with the multiple flip plates 411. In other words, one first drive component 420 drives one flip plate 411 to rotate. The rotation directions of two adjacent first drive components 420 are opposite.

[0072] like Figures 3 to 5 As shown, in some other embodiments, the first drive assembly 420 includes a plurality of main gears 421 and a first drive structure 422. The plurality of main gears 421 are arranged in the left-right direction, and two adjacent main gears 421 are meshed and connected; the plurality of main gears 421 correspond to the plurality of flip plates 411 one by one, and the main gears 421 are connected to the corresponding flip plates 411 through the connecting shaft 428. The first drive structure 422 is connected to at least one main gear 421, and is used to drive two adjacent flip plates 411 to flip forward and reverse respectively through the main gear 421. By arranging a plurality of main gears 421 in the left-right direction, and the adjacent main gears 421 are meshed and connected, all the main gears 421 can be driven to rotate by a first drive structure 422, and the rotation directions of the adjacent main gears 421 are opposite, the structure is simple, and the operation is convenient.

[0073] Furthermore, 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; 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 two adjacent flip plates 411 flip left and right respectively. By providing the first transmission member 423, the installation position of the first driving member 424 can be more diverse.

[0074] Exemplarily, the first driving member 424 includes a driving motor. Preferably, the first driving member 424 is a servo motor.

[0075] Exemplarily, the first transmission member 423 includes a chain transmission structure or a belt transmission structure.

[0076] like Figure 5 As shown, further, the first transmission member 423 includes a screw rod 426 and a transmission shaft 427. The screw rod 426 is meshedly connected with at least one main gear 421. One end of the transmission shaft 427 is connected to the screw rod 426, and the other end is connected to the first driving member 424. Specifically, the servo motor, the transmission shaft 427 and the screw rod 426 are coaxially arranged. One end of the transmission shaft 427 is connected to the screw rod 426, and the other end is connected to the driving end of the servo motor, and the servo motor drives the screw rod 426 to rotate through the transmission shaft 427. The screw rod 426 is meshedly connected with at least one main gear 421, and can then drive all the main gears 421 to rotate. Driving the main gears 421 through the screw rod 426 can prevent the force at the end of the main gear 421 from being transmitted to the servo motor end, thereby avoiding the problem of the servo motor automatically flipping as the weight of the semi-fixed sediment increases.

[0077] Furthermore, the first driving structure 422 further includes a speed gear 425. The speed gear 425 is meshedly connected with at least one main gear 421, and the speed gear 425 is connected with the first driving member 424 through the first transmission member 423; the first driving member 424 adjusts the rotation speed of the main gear 421 through the speed gear 425. Specifically, the speed gear 425 is meshedly connected with the screw 426 and the main gear 421, and plays a role in adjusting the transmission of the main gear 421.

[0078] Exemplarily, the speed change gear 425 includes a reduction gear or an acceleration gear. Preferably, the speed change gear 425 is a reduction gear.

[0079] The present invention also provides a sedimentation system. The sedimentation system includes a plurality of sedimentation tanks of any of the above embodiments. Therefore, the sedimentation system of this embodiment has at least the above advantages, which will not be described in detail here.

[0080] Exemplarily, the sedimentation system includes a plurality of sedimentation tanks; the plurality of sedimentation tanks are arranged in series and are connected in sequence. By continuing to transfer the clean water after the previous stage of treatment to the next stage of sedimentation tank for treatment, the purification effect of aquaculture sewage can be improved, and the treatment efficiency and total treatment capacity can be improved.

[0081] Exemplarily, the sedimentation system includes a plurality of sedimentation tanks; the plurality of sedimentation tanks are arranged in parallel. When sewage is being sedimented, the sewage can flow into a single sedimentation tank one by one, during which more static sedimentation time can be provided for other sedimentation tanks at the same time, further improving the treatment efficiency of continuous sedimentation of sewage.

[0082] Specifically, the sedimentation system includes three sedimentation tanks; the three sedimentation tanks are arranged in parallel; after the first sedimentation tank is filled with sewage, the water injection is stopped and water is injected into the second sedimentation tank. After the second sedimentation tank is filled with sewage, the water injection is stopped and water is injected into the third sedimentation tank. During the water injection period, the other sedimentation tanks are precipitated, which can provide more static sedimentation time for the other sedimentation tanks at the same time, further improving the treatment efficiency of continuous sedimentation of sewage.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sedimentation tank, characterized in that: include: Sedimentation tank body (100): A surface water drawing device (300) is located above the sedimentation tank body (100) and is used to draw clean water from the surface of the sedimentation tank body (100) to a clean water collection tank; The solid-liquid separation device (400) is located in the middle of the sedimentation tank body (100) and is used to separate the sedimentation tank body (100) 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 to carry semi-solid sediment settled in the upper space; in the second position, the semi-solid sediment falls into the lower space.

2. The precipitation tank according to claim 1, characterized in that: The solid-liquid isolation device (400) comprises: An isolation component (410) is located in the middle of the sedimentation tank body (100) to separate the sedimentation tank body (100) into the upper space and the lower space; the isolation component (410) has a first position and a second position; A first driving component (420) is installed on the sedimentation tank body (100) and connected to the isolation component (410), and is used to drive the isolation component (410) to switch between the first position and the second position.

3. The sedimentation tank according to claim 2, characterized in that: The isolation component (410) comprises: A plurality of flip plates (411) are laid in the sedimentation tank body (100) along the left-right direction; the first driving assembly (420) is connected to the flip plates (411) and is used to drive two adjacent flip plates (411) to flip leftward and rightward respectively, so that an opening is formed between the two adjacent flip plates (411), and the opening is used to allow the semi-solid sediment to fall into the lower space.

4. The precipitation tank according to claim 1, characterized in that: The surface water drawing device (300) comprises: A connecting component mounted on the sedimentation tank body (100); A water-drawing component (320), the lower end of which is hinged to the connecting component, and the upper end of which floats on the water surface of the sedimentation tank body (100) and is used to draw surface clean water to the clean water collection tank.

5. The precipitation tank according to claim 4, characterized in that: The connecting component comprises: A fixed partition (310), wherein the front side surface of the fixed partition (310) is sealed with the front inner wall of the sedimentation tank body (100), and the rear side surface of the fixed partition (310) is sealed with the rear inner wall of the sedimentation tank body (100), so as to separate the sedimentation tank body (100) into a left space and a right space.

6. The precipitation tank according to claim 5, characterized in that: The water-drawing component (320) comprises: A floating body assembly (321), wherein the lower end of the floating body assembly (321) is hinged to the fixed partition (310) so that the floating body assembly (321) can swing left and right; an overflow groove is provided on the upper side of the floating body assembly (321); The flexible water retaining assembly (322) is used to expand or retract along the left-right direction; the lower end of the flexible water retaining assembly (322) is in sealing cooperation with the fixed partition (310), and the flexible water retaining assembly (322) is in sealing cooperation with the floating assembly (321) and the sedimentation tank body (100).

7. The precipitation tank according to claim 6, characterized in that: The floating body assembly (321) comprises: A floating body (3211), wherein the upper surface of the floating body (3211) is provided with the overflow groove along the front-rear direction; A movable baffle (3212), wherein 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 floating body (3211); the movable baffle (3212) is sealed and matched with the flexible water retaining assembly (322).

8. The precipitation tank according to any one of claims 1 to 7, characterized in that: The precipitation tank also includes: A self-dredging device (500) is arranged at the bottom of the sedimentation tank body (100) and is used to guide the semi-solid sediment in the lower space to the sewage outlet (511).

9. The precipitation tank according to claim 8, characterized in that: The self-dredging device (500) comprises: A shell (510) is used to be arranged at the bottom of the sedimentation tank body (100); the cross section of the shell (510) is polygonal; the upper part of the shell (510) has an opening, and the bottom of the shell (510) has the sewage outlet (511); A concentric annular flow channel (520) is arranged in the outer shell (510); the sewage outlet (511) is located on the inner side of the concentric annular flow channel (520); the cross section of the concentric annular flow channel (520) is the inscribed circle of the polygon; a drainage port (521) is formed at a position where the concentric annular flow channel (520) is tangent to the inner wall of the outer shell (510); the plurality of drainage ports (521) enable the water flow to form a circulation in the concentric annular flow channel (520); A plurality of sewage diversion assemblies (530) are arranged in the housing (510) and are located outside the concentric annular flow channel (520); the plurality of sewage diversion assemblies (530) correspond one-to-one to the drainage ports (521), and the sewage diversion assemblies (530) are used to divert sediment located outside the concentric annular flow channel (520) to the corresponding drainage ports (521).

10. The precipitation tank according to claim 9, characterized in that: The concentric annular flow channel (520) comprises: A plurality of annular flow channels (522) are arranged around the central axis of the shell (510) to form a concentric circle structure, wherein the cross section of the concentric circle structure is an inscribed circle of the polygon; the drainage port (521) is formed between two adjacent annular flow channels (522); and the plurality of annular flow channels (522) are arranged tangentially to the sides of the polygon in a one-to-one correspondence; A plurality of guide plates (523) correspond one to one with the plurality of annular flow channels (522); the guide plate (523) is connected to one end of the annular flow channel (522); the guide plate (523) is arranged in a direction parallel to the side wall of the drainage port (521), so that water flows into the annular flow channel (522) along the inner tangent direction of the annular flow channel (522) and forms a circulation in the annular flow channel (522).

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