Sedimentation tanks and sewage treatment plants

Abstract

The present invention relates to a sedimentation tank and a sewage treatment device. The sedimentation tank comprises a tank body and a plurality of sedimentation pieces. The plurality of sedimentation pieces are arranged in the tank body along the depth direction of the tank body, and divide the internal space of the tank body into a plurality of water-passing spaces. When the sedimentation piece is in a first position, the inclination angle of the sedimentation piece relative to the tank body is a first angle, so that the sediment mud in the sewage settles on the sedimentation piece when the sewage flows through the water-passing space. When the sedimentation piece is in a second position, the inclination angle of the sedimentation piece relative to the tank body is a second angle, so that the sediment mud is separated from the sedimentation piece by gravity and falls to the bottom of the tank body. The plurality of sedimentation pieces constitute a sedimentation assembly. When the sedimentation piece is in the second position, one end of the sedimentation assembly protrudes from the surface of the sewage, and the other end of the sedimentation assembly abuts against the bottom inner wall of the tank body, so that the sedimentation assembly and the bottom inner wall of the tank body together constitute a blocking structure for blocking the sewage from flowing from one side of the sedimentation assembly to the other side of the sedimentation assembly in the tank body.

Description

Technical Field

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

[0002] Since traditional sedimentation tanks are relatively deep, the sedimentary sludge in the sewage interacts with the sewage water for a relatively long time before falling to the bottom of the tank. This will cause the sedimentary sludge to be excessively impacted by the sewage water before settling to the bottom of the tank and mixed into the sewage water again, resulting in low sedimentation efficiency of the sedimentary sludge in the sewage. Summary of the invention

[0003] Based on this, it is necessary to provide a sedimentation tank and a sewage treatment device that can improve the sedimentation efficiency of the sediment sludge in the sewage.

[0004] A sedimentation tank, comprising: a tank body and a plurality of sedimentation pieces, wherein the tank body is used to contain sewage, and the plurality of sedimentation pieces are arranged in the tank body along the depth direction of the tank body, and divide the internal space of the tank body into a plurality of water-passing spaces; and the sedimentation pieces can rotate between a first position and a second position; when the sedimentation pieces are in the first position, the inclination angle of the sedimentation pieces relative to the tank body is a first angle, so that the sediment mud in the sewage settles on the sedimentation pieces when the sewage flows through the water-passing spaces; when the sedimentation pieces are in the second position, the inclination angle of the sedimentation pieces relative to the tank body is a second angle, and the second angle is greater than the first angle, so that the sediment mud is separated from the sedimentation pieces by gravity and falls to the bottom of the tank body;

[0005] A plurality of the sedimentation pieces constitute a sedimentation assembly. When the sedimentation pieces are in the second position, one end of the sedimentation assembly protrudes from the surface of the sewage, and the other end of the sedimentation assembly abuts against the bottom inner wall of the tank body. The height of one end of the sedimentation assembly protruding from the sewage surface does not exceed a preset value, so that the sedimentation assembly and the bottom inner wall of the tank body together constitute a blocking structure for blocking the sewage from flowing from one side of the sedimentation assembly to the other side of the sedimentation assembly in the tank body.

[0006] In one embodiment, the sedimentation member includes a first end and a second end that are oppositely arranged, and the first ends of multiple sedimentation members are arranged in a step shape, and the second ends of multiple sedimentation members are arranged in a step shape. When the sedimentation member is in the second position, the first end of at least one sedimentation member protrudes from the surface of the sewage, and the second end of at least one sedimentation member abuts against the bottom inner wall of the pool body. The height of each first end of the sedimentation member protruding from the sewage surface does not exceed the preset value, so that the sedimentation component and the bottom inner wall of the pool body together constitute the blocking structure.

[0007] In one embodiment, the sedimentation member includes a first end and a second end that are oppositely arranged, and the first ends of multiple sedimentation members are arranged flush, and the second ends of multiple sedimentation members are arranged in a stepped manner. When the sedimentation members are in the second position, the first end of each sedimentation member protrudes from the surface of the sewage, and the second end of at least one sedimentation member abuts against the bottom inner wall of the pool body. The height of the first end of each sedimentation member protruding from the sewage surface does not exceed the preset value, so that the sedimentation assembly and the bottom inner wall of the pool body together constitute the blocking structure.

[0008] In one embodiment, the sedimentation member is a sedimentation plate, and a plurality of the sedimentation plates are spaced apart along the depth direction of the pool body. The water flow space is formed between any two adjacent sedimentation plates and between the topmost sedimentation plate and the top of the pool body, and the top of the sedimentation plate is used to carry the sediment mud.

[0009] In one embodiment, the sedimentation member is a sedimentation tube, and a plurality of the sedimentation tubes are stacked or spaced apart along the depth direction of the pool body, the internal space of each sedimentation tube constitutes the water flow space, and the inner bottom wall of the sedimentation tube is used to carry the sediment mud.

[0010] In one of the embodiments, it further includes a rotating shaft, and the precipitation member is rotatably disposed in the pool body via the rotating shaft.

[0011] In one embodiment, a driving mechanism is further included, wherein the driving mechanism is connected to the precipitation member, and the driving mechanism is used to drive the precipitation member to rotate between the first position and the second position.

[0012] In one embodiment, the driving mechanism includes a driving member and a rope body, the driving member is arranged in the pool body, one end of the rope body is arranged on the driving member, and the other end of the rope body is connected to the precipitation member, and the driving member can reel in and out the rope body to adjust the length of the rope body connected to one end of the precipitation member, so that the pulling force of the rope body on the precipitation member can be adjusted, thereby allowing the precipitation member to rotate between the first position and the second position.

[0013] In one of the embodiments, an elastic member is further included, and the precipitation member is arranged in the pool body through the elastic member. The elastic member is used to elastically support the precipitation member through its own elastic deformation, so that the precipitation member can rotate between the first position and the second position.

[0014] A sewage treatment device comprises the above-mentioned sedimentation tank.

[0015] The above-mentioned sedimentation tank divides the internal space of the tank body into multiple water-passing spaces by arranging multiple rotatable sedimentation pieces in the tank body along the depth direction of the tank body, thereby effectively shortening the interaction time between the sedimentary sludge in the sewage and the sewage water body by utilizing the shallow tank theory, so that when the sedimentary piece is in the first position (the inclination angle of the sedimentary piece relative to the tank body is the first angle), the sedimentary sludge in the sewage can quickly settle on the sedimentary piece when the sewage flows through the water-passing space. When the sedimentary sludge deposited on the sedimentary piece reaches a certain deposition amount, the sedimentary piece is rotated from the first position to the second position (the inclination angle of the sedimentary piece relative to the tank body is the second angle, and the second angle is greater than the first angle), so that the sedimentary sludge settled on the sedimentary piece is quickly separated from the sedimentary piece by gravity and falls to the bottom of the tank body, thereby realizing the rapid sedimentation of the sedimentary sludge in the sewage relative to the bottom of the tank body, thereby greatly improving the sedimentation efficiency of the sedimentary sludge in the sewage.

[0016] In the present solution, a plurality of sedimentation members constitute a sedimentation assembly. When the sedimentation member is rotated and switched from the first position to the second position to realize the sedimentation mud on the sedimentation member settling toward the bottom of the tank body, since at this time one end of the sedimentation member protrudes from the surface of the sewage, the other end of the sedimentation member abuts against the bottom inner wall of the tank body, and the height of one end of the sedimentation member protruding from the sewage surface does not exceed a preset value, the sedimentation member and the bottom inner wall of the tank body together constitute a blocking structure. Since the blocking structure can block the sewage from flowing from one side of the sedimentation member to the other side of the sedimentation member in the tank body, the sedimentation mud in the sewage can be fully settled in the area on one side of the sedimentation member relative to the bottom of the tank body, and it is prevented that the sewage that is not fully precipitated flows from one side of the sedimentation member to the other side of the sedimentation member through the flow gap formed above and below the sedimentation member. After the sedimentation mud in the sewage is fully precipitated relative to the bottom of the tank body, the sedimentation member can be rotated and switched from the current second position to the first position again to realize the release of the blocking structure, thereby conducting the flow of the purified sewage in the tank body, thereby ensuring that the effluent water quality of the sedimentation tank meets the standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of a sedimentation tank in one embodiment;

[0019] Figure 2 A schematic diagram of a sedimentation tank in an embodiment when the sedimentation member is in a first position;

[0020] Figure 3 A schematic diagram of a sedimentation tank in an embodiment when the sedimentation member is in the second position;

[0021] Figure 4 It is a schematic diagram of a sedimentation tank in another embodiment when the sedimentation member is in the first position;

[0022] Figure 5 It is a schematic diagram of a sedimentation tank in another embodiment when the sedimentation member is in the second position;

[0023] Figure 6 It is a schematic diagram of a sedimentation tank in another embodiment when the sedimentation member is in the second position;

[0024] Figure 7 It is a schematic diagram of a sedimentation tank in another embodiment when the sedimentation member is in the second position;

[0025] Figure 8 It is a schematic diagram of a sedimentation tank in another embodiment when the sedimentation member is in the second position;

[0026] Fig. 9 It is a structural schematic diagram of a sedimentation tank in another embodiment;

[0027] Fig.10 It is a schematic diagram of the structure of a sedimentation member in a sedimentation tank in another embodiment;

[0028] Fig.11 This is a schematic diagram of the structure of a sewage treatment device in one embodiment;

[0029] Fig.12 It is a structural schematic diagram of a sewage treatment device in another embodiment;

[0030] Fig.13 This is a schematic diagram of the structure after the sedimentation member and the rotating shaft are assembled in the sedimentation tank in one embodiment;

[0031] Fig.14It is a schematic diagram of the structure after the sedimentation member and the rotating shaft are assembled in the sedimentation tank in another embodiment;

[0032] Fig.15 It is a schematic diagram of the structure after the sedimentation member and the rotating shaft are assembled in the sedimentation tank in another embodiment;

[0033] Fig.16 It is a schematic diagram of the structure after the sedimentation member and the rotating shaft are assembled in the sedimentation tank in another embodiment;

[0034] Fig.17 It is a structural schematic diagram of a sedimentation tank in another embodiment;

[0035] Fig.18 It is a structural schematic diagram of a sedimentation tank in another embodiment;

[0036] Fig.19 It is a structural schematic diagram of a sewage treatment device in another embodiment;

[0037] Fig. 20 It is a structural schematic diagram of a sedimentation tank in another embodiment;

[0038] Fig.21 It is a structural schematic diagram of a sewage treatment device in another embodiment;

[0039] Fig. 22 It is a structural schematic diagram of a sewage treatment device in another embodiment;

[0040] Fig.23 It is a schematic structural diagram of a sewage treatment device in another embodiment. DETAILED DESCRIPTION

[0041] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0042] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0044] like Figure 1 As shown, a sedimentation tank 100 in one embodiment includes a tank body 110 and a plurality of sedimentation pieces 120, wherein the tank body 110 is used to receive sewage; the plurality of sedimentation pieces 120 are arranged in the tank body 110 along the depth direction of the tank body 110, and divide the internal space of the tank body 110 into a plurality of water-passing spaces 130; and the sedimentation pieces 120 can rotate between a first position and a second position, and when the sedimentation pieces 120 are in the first position, the inclination angle of the sedimentation pieces 120 relative to the tank body 110 is a first angle, so that the sediment mud in the sewage settles on the sedimentation pieces 120 when the sewage flows through the water-passing spaces 130, and when the sedimentation pieces 120 are in the second position, the inclination angle of the sedimentation pieces 120 relative to the tank body 110 is a second angle, and the second angle is greater than the first angle, so that the sediment mud is separated from the sedimentation pieces 120 by gravity and falls to the bottom of the tank body 110.

[0045] The sedimentation tank 100 is provided with a plurality of rotatable sedimentation members 120 in the tank body 110 along the depth direction of the tank body 110, so as to divide the internal space of the tank body 110 into a plurality of water-passing spaces 130, thereby effectively shortening the interaction time between the sedimentation mud in the sewage and the sewage water body by utilizing the shallow tank theory, so that when the sedimentation member 120 is in the first position (the inclination angle of the sedimentation member 120 relative to the tank body 110 is the first angle), the sedimentation mud in the sewage can be quickly settled to the sedimentation member when the sewage flows through the water-passing spaces 130. When the sedimentation mud deposited on the sedimentation member 120 reaches a certain amount of sedimentation, the sedimentation member 120 is rotated and switched from the first position to the second position (the inclination angle of the sedimentation member 120 relative to the tank body 110 is a second angle, and the second angle is greater than the first angle), so that the sedimentation mud settled on the sedimentation member 120 is quickly separated from the sedimentation member 120 by gravity and falls to the bottom of the tank body 110, thereby realizing the rapid sedimentation of the sedimentation mud in the sewage relative to the bottom of the tank body 110, and greatly improving the sedimentation efficiency of the sedimentation mud in the sewage.

[0046] like Figure 2 and Figure 3As shown, in one embodiment, a plurality of sedimentation members 120 constitute a sedimentation assembly 122. When the sedimentation member 120 is in the second position, one end of the sedimentation assembly 122 protrudes from the surface of the sewage, and the other end of the sedimentation assembly 122 abuts against the bottom inner wall of the tank body 110. The height by which one end of the sedimentation assembly 122 protrudes from the surface of the sewage does not exceed a preset value, so that the sedimentation assembly 122 and the bottom inner wall of the tank body 110 together constitute a blocking structure 101 for blocking sewage from flowing from one side of the sedimentation assembly 122 to the other side of the sedimentation assembly 122 in the tank body 110.

[0047] When the sedimentation member 120 is rotated and switched from the first position to the second position to achieve the sedimentation mud on the sedimentation member 120 settling toward the bottom of the tank body 110, since at this time one end of the sedimentation component 122 protrudes from the surface of the sewage, the other end of the sedimentation component 122 abuts against the bottom inner wall of the tank body 110, and the height of one end of the sedimentation component 122 protruding from the sewage surface does not exceed a preset value, the sedimentation component 122 and the bottom inner wall of the tank body 110 together form a blocking structure 101. Since the blocking structure 101 can prevent sewage from flowing from one side of the sedimentation component 122 to the other side of the sedimentation component 122 in the tank body 110, The sediment sludge in the sewage can be fully settled in the area on one side of the sedimentation component 122 relative to the bottom of the tank body 110, avoiding the sewage that is not fully settled from flowing from one side of the sedimentation component 122 to the other side of the sedimentation component 122 through the flow gap formed above and below the sedimentation component 122. After the sediment sludge in the sewage is fully settled relative to the bottom of the tank body 100, the sedimentation member 100 can be rotated and switched from the current second position to the first position to realize the release of the blocking structure 101, thereby conducting the flow of purified sewage in the tank body 110, thereby ensuring that the effluent water quality of the sedimentation tank 100 meets the standards.

[0048] like Figure 2 and Figure 3 As shown, in one embodiment, the sedimentation member 120 includes a first end 102 and a second end 104 that are relatively arranged, and the first ends 102 of the plurality of sedimentation members 120 are arranged in a step-like manner, and the second ends 104 of the plurality of sedimentation members 120 are arranged in a step-like manner. When the sedimentation member 120 is in the second position, the first end 102 of at least one sedimentation member 120 protrudes from the surface of the sewage, and the second end 104 of at least one sedimentation member 120 abuts against the bottom inner wall of the tank body 110. The height by which the first end 102 of each sedimentation member 120 protrudes from the surface of the sewage does not exceed a preset value, so that the sedimentation component 122 and the bottom inner wall of the tank body 110 together form a blocking structure 101.

[0049] like Figure 4 and Figure 5As shown, in another embodiment, the first ends 102 of the plurality of sedimentation members 120 are arranged flush, and the second ends 104 of the plurality of sedimentation members 120 are arranged in a stepped manner. When the sedimentation members 120 are in the second position, the first end 102 of each sedimentation member 120 protrudes from the surface of the sewage, and the second end 104 of at least one sedimentation member 120 abuts against the bottom inner wall of the tank body 110. The height of the first end 102 of each sedimentation member 120 protruding from the sewage surface does not exceed a preset value, so that the sedimentation assembly 122 and the bottom inner wall of the tank body 110 together form a blocking structure 101.

[0050] In one embodiment, the first angle is 0 to 20 degrees. That is, when the sedimentation member 120 is in the first position, the inclination angle of the sedimentation member 120 relative to the tank body 110 is 0 to 20 degrees, that is, when the sedimentation member 120 is in the first position, the sedimentation member 120 is horizontally arranged or inclined at a relatively small angle relative to the tank body 110 to ensure that the sediment mud in the sewage can be stably settled on the sedimentation member 120 when the sewage flows through the water flow space 130. Preferably, the first angle is 0 or 10 degrees.

[0051] Further, the second angle is 45 to 90 degrees, that is, when the sedimentation member 120 is in the second position, the inclination angle of the sedimentation member 120 relative to the tank body 110 is 45 to 90 degrees, that is, when the sedimentation member 120 is in the second position, the sedimentation member 120 is inclined or vertically arranged at another relatively large angle relative to the tank body 110 to ensure that the sedimentation mud can be separated from the sedimentation member 120 by gravity. Figures 6 to 8 As shown, preferably, the second angle is 45 degrees, 75 degrees or 90 degrees.

[0052] It is understandable that, within the same depth arrangement space of the pool body 110, the more the sedimentation elements 120 are arranged, the smaller the size of the water passage space 130 in the depth direction of the pool body 110 is, thereby making the sedimentation rate of the sediment sludge in the sewage faster.

[0053] like Figure 1 As shown, in one embodiment, a plurality of precipitation parts 120 together constitute an integral precipitation assembly 122. Such arrangement facilitates the overall installation and disassembly of the plurality of precipitation parts 120 relative to the tank body 110, thereby improving the convenience of assembly and disassembly of the sedimentation tank 100. Further, in one embodiment, the precipitation assembly 122 includes a plurality of groups, and the plurality of groups of precipitation assemblies 122 are arranged in the tank body 110 at intervals along the width direction of the tank body 110. In the present embodiment, the precipitation assembly 122 includes two groups, and the two groups of precipitation assemblies 122 are arranged in the tank body 110 at intervals along the width direction of the tank body 110. It can be understood that in other embodiments, the number of precipitation assemblies 122 can be one group or more than two groups, and the specific arrangement method can be reasonably selected according to actual conditions.

[0054] In one embodiment, the plurality of precipitation members 120 are staggered in sequence along the depth direction of the pool body 110 ; it is understandable that in other embodiments, the plurality of precipitation members 120 are aligned along the depth direction of the pool body 110 .

[0055] like Figure 1 As shown, in one embodiment, the sedimentation member 120 is a sedimentation plate 124, and a plurality of sedimentation plates 124 are arranged at intervals along the depth direction of the pool body 110. A water flow space 130 is formed between any two adjacent sedimentation plates 124 and between the topmost sedimentation plate 124 and the top of the pool body 110, and the top of the sedimentation plate 124 is used to carry the sediment mud.

[0056] In one embodiment, any two adjacent sedimentation plates 124 are arranged in parallel. Furthermore, any two adjacent sedimentation plates 124 are arranged in parallel and at equal intervals, so that the sedimentation sludge in the sewage has the same sedimentation rate in the water flow space 130 formed between any two adjacent sedimentation plates 124, thereby achieving the effect of improving the sedimentation uniformity of the sedimentation sludge in the sewage. In one embodiment, the interval between any two adjacent sedimentation plates 124 is 1 cm to 1 m.

[0057] like Fig. 9 As shown, it can be understood that, in one embodiment, the sedimentation member 120 is a sedimentation tube 126, and multiple sedimentation tubes 126 are stacked or spaced along the depth direction of the pool body 110, and the internal space of each sedimentation tube 126 constitutes a water flow space 130, and the inner bottom wall of the sedimentation tube 126 is used to carry the sediment mud.

[0058] like Fig. 9 As shown, in one embodiment, a plurality of sedimentation tubes 126 are arranged at intervals along the depth direction of the tank body 110 and are stacked along the length direction of the tank body 110; Fig.10 As shown, further, in one embodiment, a plurality of sedimentation pipes 126 are stacked along the depth direction and the length direction of the tank body 110 to increase the number of sedimentation pipes 126 arranged in a unit space of the tank body 110, which is conducive to reducing the size and floor space of the sedimentation tank 100. In one embodiment, the axes of the plurality of sedimentation pipes 126 are arranged parallel to each other. It is understood that, in one embodiment, the pipe spacing of the sedimentation pipes 126 is 1 cm to 50 cm, and the pipe spacing of the sedimentation pipes 126 is the vertical distance between the inner top wall of the sedimentation pipe 126 and the inner bottom wall of the sedimentation pipe 126.

[0059] In one embodiment, the cross-section of the sedimentation tube 126 is a rectangle or an equilateral hexagon, so as to facilitate the splicing and combination between the sedimentation tubes 126, thereby improving the assembly efficiency of the sedimentation assembly 122 formed by the combination of multiple sedimentation tubes 126.

[0060] like Figure 1As shown, in one embodiment, the sedimentation tank 100 further includes a rotating shaft 140, and the sedimentation member 120 is rotatably disposed in the tank body 110 via the rotating shaft 140. In one embodiment, the rotating shaft 140 includes a plurality of rotating shafts 140, and the plurality of rotating shafts 140 correspond to the plurality of sedimentation members 120 one by one, that is, the sedimentation member 120 is rotatably disposed in the tank body 110 via the corresponding rotating shafts 140. Fig.11 and Fig.12 As shown, it can be understood that in other embodiments, the rotating shaft 140 is single, and the precipitation assembly 122 composed of multiple precipitation members 120 is rotatably arranged in the pool body 110 through the single rotating shaft 140.

[0061] like Fig.13 As shown, in one embodiment, the rotating shaft 140 is a single-axis structure, and the rotating shaft 140 is rotatably arranged throughout the precipitation member 120, thereby realizing the relative rotation of the precipitation member 120 in the tank body 110; in other embodiments, such as Fig.14 As shown, the rotating shaft 140 can be a double-axis structure, that is, the rotating shaft 140 includes two base shafts 142, and the two sides of the precipitation member 120 are respectively rotatably connected to the two base shafts 142, thereby realizing the relative rotation of the precipitation member 120 in the pool body 110.

[0062] It should be noted that the rotating shaft 140 can be disposed at different positions of the precipitation member 120, such as Fig.15 and Fig.16 As shown, in one embodiment, the rotating shaft 140 is disposed at the edge or the middle of the precipitation member 120. Figure 8 As shown, further, the plurality of rotating shafts 140 are respectively arranged at the same position corresponding to the plurality of precipitation members 120, so that when the plurality of precipitation members 120 are sequentially staggered in the depth direction of the pool body 110, the plurality of rotating shafts 140 are sequentially staggered in the depth direction of the pool body 110, that is, the projections of the plurality of rotating shafts 140 in the depth direction of the pool body 110 are sequentially spaced. In one embodiment, the projections of the plurality of rotating shafts 140 in the depth direction of the pool body 110 can be sequentially arranged in parallel; as shown in FIG. Figure 7 As shown, in other embodiments, multiple rotating shafts 140 are respectively arranged at the same position corresponding to the multiple precipitation members 120, so that when the multiple precipitation members 120 are aligned along the depth direction of the pool body 110, the multiple rotating shafts 140 are aligned along the depth direction of the pool body 110, that is, the projections of the multiple rotating shafts 140 in the depth direction of the pool body 110 overlap with each other.

[0063] In one embodiment, when the precipitation assembly 122 composed of a plurality of precipitation members 120 is rotatably disposed in the tank body 110 via a single rotating shaft 140, the single rotating shaft 140 can be disposed at different positions of the precipitation assembly 122, such as Fig.11 and Fig.12 As shown, in one embodiment, the single rotating shaft 140 may be disposed at the edge or the middle of the precipitation component 122 .

[0064] like Fig.13 and Fig.15 As shown, in one embodiment, the axial direction of the rotating shaft 140 is parallel or perpendicular to the flow direction of the sewage. In other embodiments, the axial direction of the rotating shaft 140 can also be set at a certain angle to the flow direction of the sewage. Specifically, the angle formed by the axial direction of the rotating shaft 140 and the flow direction of the sewage is 0 to 45 degrees.

[0065] like Fig.17 As shown, in one embodiment, the sedimentation tank 100 further includes a driving mechanism 150, which is connected to the sedimentation member 120, and is used to drive the sedimentation member 120 to rotate between the first position and the second position.

[0066] like Fig.17 As shown, in one embodiment, the driving mechanism 150 includes a driving member 152 and a rope body 154. The driving member 152 is disposed in the pool body 110. One end of the rope body 154 is disposed on the driving member 152, and the other end of the rope body 154 is connected to the precipitation member 120. The driving member 152 can retract and unwind the rope body 154 to adjust the length of the rope body 154 connected to one end of the precipitation member 120, so that the pulling force of the rope body 154 on the precipitation member 120 can be adjusted, thereby allowing the precipitation member 120 to rotate between the first position and the second position.

[0067] Specifically, initially, the rope 154 is connected to one end of the sedimentation member 120 and has a first length. The rope 154 has a first pulling force on the sedimentation member 120. Under the action of the first pulling force of the rope 154, the sedimentation member 120 is maintained in the first position (the inclination angle of the sedimentation member 120 relative to the tank body 110 is the first angle). At this time, the sedimentation mud in the sewage can be quickly settled on the sedimentation member 120 when the sewage flows through the water flow space 130; when the sedimentation mud deposited on the sedimentation member 120 reaches a certain amount, the rope 154 is unwound by the driving member 152 to increase the length of the rope 154 connected to one end of the sedimentation member 120, thereby reducing the pulling force of the rope 154 on the sedimentation member 120. Since a certain amount of sedimentation mud is settled on the sedimentation member 120 at this time, Under the action of gravity of the sedimentation mud, the overall downward force of the sedimentation piece 120 increases, and the upward pulling force of the current rope body 154 on the sedimentation piece 120 decreases, so that the sedimentation piece 120 forms an overall downward resultant force. Therefore, the sedimentation piece 120 rotates and switches from the current first position to the second position under the action of its own overall downward resultant force. When the sedimentation piece 120 rotates and switches to the second position, the length of the rope body 154 connected to one end of the sedimentation piece 120 increases from the initial first length to the current second length, and the pulling force of the rope body 154 on the sedimentation piece 120 decreases from the initial first pulling force to the current second pulling force. At this time, the sedimentation mud settled on the sedimentation piece 120 can be quickly separated from the sedimentation piece 120 by gravity and fall to the bottom of the pool body 110.

[0068] After the sedimentation mud on the sedimentation member 120 is discharged, the rope 154 can be rolled up by the driving member 152 to reduce the length of the rope 154 connected to the sedimentation member 120, thereby increasing the pulling force of the rope 154 on the sedimentation member 120. At this time, the sedimentation member 120 has no sedimentation mud load, so the downward force of the sedimentation member 120 as a whole is significantly reduced, and the upward pulling force of the rope 154 on the sedimentation member 120 is increased, so that the sedimentation member 120 forms an overall upward force. Under the action of the upward combined force, the rope 154 rotates and switches to the initial first position from the current second position. At this time, the length of the rope body 154 connected to one end of the sedimentation member 120 is restored to the initial first length, and the pulling force of the rope body 154 on the sedimentation member 120 is restored to the initial first pulling force. The sedimentary mud in the sewage can be re-settled relative to the sedimentation member 120 when the sewage flows through the water flow space 130. Therefore, the rotation switching of the sedimentation member 120 between the first position and the second position is realized by the driving member 152 to reel in and out the rope body 154 in a cycle.

[0069] like Fig.17As shown, in one embodiment, the driving member 152 includes a driving shaft 156, and the driving shaft 156 is rotatably disposed in the pool body 110. Specifically, the driving shaft 156 is rotatably disposed between two opposite inner walls of the pool body 110, and the end of the rope body 154 away from the precipitation member 120 is wound around the driving shaft 156. The driving shaft 156 is driven to rotate around its own axial direction to retract and unwind the rope body 154 to adjust the length of the rope body 154 connected to one end of the precipitation member 120, so that the pulling force of the rope body 154 on the precipitation member 120 can be adjusted, thereby allowing the precipitation member 120 to rotate between the first position and the second position.

[0070] like Fig.18 As shown, in one embodiment, the above-mentioned sedimentation tank 100 also includes an elastic member 160, and the sedimentation member 120 is arranged in the tank body 110 through the elastic member 160. The elastic member 160 is used to elastically support the sedimentation member 120 through its own elastic deformation, so as to enable the sedimentation member 120 to rotate between the first position and the second position.

[0071] Specifically, initially, the sedimentation member 120 is maintained in the first position (the inclination angle of the sedimentation member 120 relative to the pool body 110 is the first angle) under the action of the elastic supporting force of the elastic member 160. At this time, the sedimentation mud in the sewage can quickly settle on the sedimentation member 120 when the sewage flows through the water flow space 130; when the sedimentation mud deposited on the sedimentation member 120 reaches a certain amount of sedimentation, the pressure of the sedimentation mud on the elastic member 160 increases under the action of the gravity of the sedimentation mud. At this time, the pressure of the sedimentation member 120 on the elastic member 160 will exceed the range of the elastic supporting force of the elastic member 160, so that the sedimentation member 120 forms an overall downward force. Therefore, the sedimentation member 120 is rotated and switched from the current first position to the second position under the action of its own overall downward force. At this time, the sedimentation mud settled on the sedimentation member 120 can be quickly separated from the sedimentation member 120 by gravity and fall to the bottom of the pool body 110.

[0072] After the sedimentation mud on the sedimentation piece 120 is discharged, the pressure on the elastic piece 160 is significantly reduced because there is no load of the sedimentation mud. At this time, the pressure of the sedimentation piece 120 on the elastic piece 160 will be lower than the range of the elastic supporting force of the elastic piece 160, so that the sedimentation piece 120 forms an overall upward force. Therefore, the sedimentation piece 120 rotates from the current second position to the initial first position under the action of its own overall upward force. At this time, the sedimentation mud in the sewage can be re-settled relative to the sedimentation piece 120 when the sewage flows through the water flow space 130.

[0073] like Fig.18As shown, in one embodiment, the elastic member 160 includes a plurality of elastic members 160, and the plurality of elastic members 160 correspond to the plurality of precipitation members 120 one by one. The elastic member 160 is used to elastically support the corresponding precipitation member 120 through its own elastic deformation, so that the corresponding precipitation member 120 rotates between the first position and the second position; it can be understood that in other embodiments, such as Fig.19 As shown, the elastic member 160 is single, that is, the sedimentation assembly 122 composed of multiple sedimentation members 120 is arranged in the pool body 110 through the single elastic member 160, and the single elastic member 160 is used to elastically support the sedimentation assembly 122 composed of multiple sedimentation members 120 through its own elastic deformation, so as to enable the sedimentation assembly 122 composed of multiple sedimentation members 120 to rotate between the first position and the second position.

[0074] like Fig. 20 As shown, in one embodiment, the sedimentation tank 100 further includes a float 170. The float 170 may be, but is not limited to, a spherical structure. The float 170 is connected to the sedimentation member 120. The float 170 can float on the surface of the sewage or be suspended in the sewage to provide buoyancy to the sedimentation member 120. By changing the water level depth of the sewage in the tank body 110, the volume of the float 170 immersed in the sewage can be adjusted, so that the buoyancy provided by the float 170 to the sedimentation member 120 can be adjusted, thereby allowing the sedimentation member 120 to rotate between the first position and the second position.

[0075] Specifically, initially, the depth of the sewage level in the pool body 110 is a first depth, the volume of the float 170 immersed in the sewage is a first volume, and the buoyancy provided by the float 170 to the sedimentation member 120 is a first buoyancy. Under the action of the first buoyancy provided by the float 170, the sedimentation member 120 is maintained in the first position (the inclination angle of the sedimentation member 120 relative to the pool body 110 is a first angle). At this time, the sedimentary mud in the sewage can be quickly settled on the sedimentation member 120 when the sewage flows through the water flow space 130; when the sedimentary mud deposited on the sedimentation member 120 reaches a certain amount of sedimentation, the water level depth of the sewage in the pool body 110 is reduced to reduce the volume of the float 170 immersed in the sewage, thereby reducing the size of the buoyancy provided by the float 170 to the sedimentation member 120. Since a certain amount of sedimentary mud is settled on the sedimentation member 120 at this time, under the action of the gravity of the sedimentary mud, the sedimentary mud is deposited on the sedimentation member 120. The downward force of the sedimentation piece 120 as a whole is increased, while the buoyancy provided by the current float 170 to the sedimentation piece 120 is reduced, so that the sedimentation piece 120 forms an overall downward force. Therefore, the sedimentation piece 120 is rotated and switched from the current first position to the second position under the action of its own overall downward force. When the sedimentation piece 120 is rotated and switched to the second position, the depth of the sewage level in the pool body 110 is reduced from the initial first depth to the current second depth, and the volume of the float 170 immersed in the sewage is reduced from the initial first volume to the current second volume, so that the buoyancy provided by the float 170 to the sedimentation piece 120 is reduced from the initial first buoyancy to the current second buoyancy. At this time, the sediment mud that has settled on the sedimentation piece 120 can be quickly separated from the sedimentation piece 120 by gravity and fall to the bottom of the pool body 110.

[0076] After the sedimentation mud on the sedimentation member 120 is discharged, the water level of the sewage in the pool body 110 is increased to increase the volume of the float 170 immersed in the sewage, thereby increasing the buoyancy provided by the float 170 to the sedimentation member 120. At this time, the sedimentation member 120 has no sedimentation mud load, so the overall downward force of the sedimentation member 120 is significantly reduced, and the buoyancy provided by the current float 170 to the sedimentation member 120 is increased, so that the sedimentation member 120 forms an overall upward resultant force. Therefore, the sedimentation member 120 rotates from the current second position to the initial first position under the action of its own overall upward resultant force. At this time, the depth of the sewage level in the pool body 110 is restored to the initial first depth, and the volume of the float 170 immersed in the sewage is restored to the first volume. The volume is reduced, so that the buoyancy provided by the float 170 to the sedimentation member 120 is restored to the initial first buoyancy. At this time, the sedimentation mud in the sewage can be re-settled relative to the sedimentation member 120 when the sewage flows through the water space 130.

[0077] like Fig. 20As shown, in one embodiment, the float 170 includes a plurality of floats, and the plurality of floats 170 correspond to the plurality of sedimentation members 120 one by one. The float 170 is used to provide buoyancy to the corresponding sedimentation member 120, so as to rotate the corresponding sedimentation member 120 between the first position and the second position. It can be understood that in other embodiments, such as Fig.21 As shown, the float 170 is single, that is, the sedimentation assembly 122 composed of multiple sedimentation members 120 is disposed in the pool body 110 through the single float 170, so that the sedimentation assembly 122 composed of multiple sedimentation members 120 can rotate between the first position and the second position.

[0078] like Fig.17 As shown, in one embodiment, the sedimentation tank 100 further includes a linkage member 180, which is connected to the plurality of sedimentation members 120 so that the plurality of sedimentation members 120 rotate synchronously in the tank body 110. In this way, by driving one of the plurality of sedimentation members 120 to rotate in the tank body 110, the remaining sedimentation members 120 in the plurality of sedimentation members 120 can be driven to rotate synchronously in the tank body 110, thereby greatly reducing the number of drive units used to drive the sedimentation members 120 to rotate, and effectively reducing the production cost of the sedimentation tank 100.

[0079] like Fig. 22 and Fig.23 As shown, in one embodiment, the above-mentioned sedimentation tank 100 also includes a barrier 190, which is arranged at the inlet end and / or outlet end of the water flow space 130. The barrier 190 has a water blocking state and a water release state, and the barrier 190 can block and conduct the flow of sewage newly entering the tank body 110 relative to the water flow space 130 when it is in the water blocking state and the water release state respectively.

[0080] When the sedimentation piece 120 rotates to the second position to discharge the sludge by the gravity of the sedimentation sludge itself, only a very small part of the sedimentation sludge in the newly-incoming sewage can settle on the sedimentation piece 120 when the sewage flows through the water passage space 130, which will affect the sedimentation of the sedimentation sludge in the sewage and cause the effluent water quality of the sedimentation tank 100 to be substandard. By providing a baffle 190 at the inlet and / or outlet of the water passage space 130, when the sedimentation piece 120 rotates to the second position, the baffle 190 can be set to a water-blocking state to block the flow of the newly-incoming sewage relative to the water passage space 130, thereby preventing the sedimentation sludge in the newly-incoming sewage from effectively settling on the sedimentation piece 120 and affecting the effluent water quality of the sedimentation tank 100. Then, when the sedimentation piece 120 rotates and switches to the first position, the baffle 190 is switched to a water-discharging state to conduct the newly-incoming sewage relative to the water passage space 130. and when the sedimentation member 120 rotates to the first position, the baffle member 190 can be kept in the water blocking state for a period of time to extend the residence time of the pre-entered sewage in the water passage space 130, so that the sediment mud in the pre-entered sewage can be fully settled on the sedimentation member 120, and then the baffle member 190 is switched to the water discharge state to conduct the flow of the newly-input sewage relative to the water passage space 130, thereby realizing the effective sedimentation of the sediment mud in the newly-input sewage in the water passage space 130.

[0081] like Fig. 22 and Fig.23 As shown, in one embodiment, the barrier 190 is rotatably connected to the top of the pool body 110 to switch the barrier 190 between the water blocking state and the water releasing state. Specifically, the barrier 190 is rotatably connected to the top of the pool body 110 via a connecting shaft.

[0082] like Fig. 22 and Fig.23 As shown, in one embodiment, the sedimentation tank 100 further includes a first flow guide 191, which is disposed at the inlet end of the water flow space 130. The first flow guide 191 is used to evenly distribute the sewage to be input into the water flow space 130 to enhance the uniformity of water inflow into the water flow space 130. In one embodiment, the first flow guide 191 may be, but is not limited to, a baffle having a plurality of evenly spaced water flow holes.

[0083] In one embodiment, the sedimentation tank 100 further includes a second flow guide 192, which is disposed at the outlet of the water passage space 130. The second flow guide 192 is used to evenly distribute the sewage output from the water passage space 130 to enhance the uniformity of the water output from the water passage space 130. In one embodiment, the second flow guide 192 may be, but is not limited to, a partition having a plurality of evenly spaced water holes.

[0084] In one embodiment, the sedimentation tank 100 further includes a mud discharge pipe 193 , which is disposed at the bottom of the tank body 110 , and is used to discharge the sediment mud settled to the bottom of the tank body 110 to the outside of the tank body 110 by means of negative pressure.

[0085] like Fig. 22 and Fig.23 As shown, it should be pointed out that the present invention also provides a sewage treatment device 10, and the sewage treatment device 10 includes a sedimentation tank 100. In one embodiment, the sewage treatment device 10 also includes a water distribution tank 200, which is arranged at the upstream end of the tank body 110. The water distribution tank 200 is used to store the sewage to be treated and balance the water quality and water quantity of the sewage to be treated, so as to ensure that the water quality and water quantity of the sewage to be treated entering each water flow space 130 of the sedimentation tank 100 are balanced, thereby ensuring the normal operation of the sedimentation tank 100.

[0086] Furthermore, in one embodiment, the sewage treatment device 10 further includes a water collection tank, which is disposed at the downstream end of the tank body 110. The water collection tank is used to store the sewage purified by the sedimentation tank 100 and balance the water quality and quantity of the purified sewage to ensure that the water quality and quantity of the purified sewage entering the water treatment unit of the next process are balanced, thereby ensuring the normal operation of the water treatment unit.

[0087] In one embodiment, the sewage treatment device 10 further includes a flocculation tank, which is disposed at the upstream end of the tank body 110. The flocculation tank is used to pre-flocculate and precipitate the sewage to be treated so as to enhance the cleanliness of the sewage entering the tank body 110, reduce the difficulty of purifying the sewage in the sedimentation tank 100, and extend the service life of the sedimentation tank 100.

[0088] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A sedimentation tank, characterized in that: include: A tank body and a plurality of sedimentation pieces, wherein the tank body is used to contain sewage, and the plurality of sedimentation pieces are arranged in the tank body along the depth direction of the tank body, and divide the internal space of the tank body into a plurality of water-passing spaces; and the sedimentation pieces can rotate between a first position and a second position; when the sedimentation pieces are in the first position, the inclination angle of the sedimentation pieces relative to the tank body is a first angle, so that the sediment mud in the sewage settles on the sedimentation pieces when the sewage flows through the water-passing spaces; when the sedimentation pieces are in the second position, the inclination angle of the sedimentation pieces relative to the tank body is a second angle, and the second angle is greater than the first angle, so that the sediment mud is separated from the sedimentation pieces by gravity and falls to the bottom of the tank body; the first angle is 0 to 20 degrees, and the second angle is 45 to 90 degrees; A plurality of the sedimentation pieces constitute a sedimentation assembly. When the sedimentation pieces are in the second position, one end of the sedimentation assembly protrudes from the surface of the sewage, and the other end of the sedimentation assembly abuts against the bottom inner wall of the tank body. The height of one end of the sedimentation assembly protruding from the sewage surface does not exceed a preset value, so that the sedimentation assembly and the bottom inner wall of the tank body together constitute a blocking structure for blocking the sewage from flowing from one side of the sedimentation assembly to the other side of the sedimentation assembly in the tank body.

2. The sedimentation tank according to claim 1, characterized in that: The sedimentation member includes a first end and a second end that are arranged opposite to each other, and the first ends of multiple sedimentation members are arranged in a step shape, and the second ends of multiple sedimentation members are arranged in a step shape. When the sedimentation member is in the second position, the first end of at least one sedimentation member protrudes from the surface of the sewage, and the second end of at least one sedimentation member abuts against the bottom inner wall of the pool body. The height of the first end of each sedimentation member protruding from the sewage surface does not exceed the preset value, so that the sedimentation component and the bottom inner wall of the pool body together constitute the blocking structure.

3. The sedimentation tank according to claim 1, characterized in that: The sedimentation member includes a first end and a second end that are arranged opposite to each other, and the first ends of multiple sedimentation members are arranged flush, and the second ends of multiple sedimentation members are arranged in a stepped manner. When the sedimentation members are in the second position, the first end of each sedimentation member protrudes from the surface of the sewage, and the second end of at least one sedimentation member abuts against the bottom inner wall of the pool body. The height of the first end of each sedimentation member protruding from the sewage surface does not exceed the preset value, so that the sedimentation component and the bottom inner wall of the pool body together constitute the blocking structure.

4. The sedimentation tank according to claim 1, characterized in that: The sedimentation member is a sedimentation plate, and a plurality of the sedimentation plates are arranged at intervals along the depth direction of the pool body. The water flow space is formed between any two adjacent sedimentation plates and between the topmost sedimentation plate and the top of the pool body. The top of the sedimentation plate is used to carry the sediment mud.

5. The sedimentation tank according to claim 1, characterized in that: The sedimentation member is a sedimentation pipe, and a plurality of the sedimentation pipes are stacked or spaced along the depth direction of the pool body. The internal space of each sedimentation pipe constitutes the water flow space, and the inner bottom wall of the sedimentation pipe is used to carry the sediment mud.

6. The sedimentation tank according to claim 1, characterized in that: It also includes a rotating shaft, and the precipitation member is rotatably arranged in the pool body via the rotating shaft.

7. The sedimentation tank according to claim 1, characterized in that: It also includes a driving mechanism, which is connected to the precipitation member and is used to drive the precipitation member to rotate between the first position and the second position.

8. The sedimentation tank according to claim 7, characterized in that: The driving mechanism includes a driving member and a rope body, wherein the driving member is arranged in the pool body, one end of the rope body is arranged on the driving member, and the other end of the rope body is connected to the precipitation member. The driving member can reel in and out the rope body to adjust the length of the rope body connected to one end of the precipitation member, so that the pulling force of the rope body on the precipitation member can be adjusted, thereby allowing the precipitation member to rotate between the first position and the second position.

9. The sedimentation tank according to claim 1, characterized in that: It also includes an elastic member, through which the precipitation member is arranged in the pool body, and the elastic member is used to elastically support the precipitation member through its own elastic deformation, so that the precipitation member can rotate between the first position and the second position.

10. A sewage treatment device, characterized in that: Comprising a sedimentation tank as described in any one of claims 1 to 9.

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