Bucket type sedimentation tank

Abstract

The utility model relates to a bucket type sedimentation tank, including barrel, mud-water separation plate, water inlet pipe, deslagging pipe and water outlet pipe, the mud-water separation plate is bucket-shaped and has a first big mouth end and a first small mouth end, a plurality of mud-water separation plates are arranged in the barrel at intervals along the first direction to form a mud-water separation zone, the first big mouth end is spaced apart from the inner wall surface of the barrel, and the first small mouth end is spaced apart from the inner wall surface of the barrel. The water inlet pipe comprises a connecting section and a water distribution section which are connected, the connecting section is arranged on the barrel, the water distribution section is arranged in the first small opening ends of the mud-water separation plates in a penetrating mode, the water distribution section faces the end of the barrel, and a plurality of water distribution openings are formed in the water distribution section at intervals and located in the mud-water separation area; and at least one water distribution opening is correspondingly formed between every two adjacent mud-water separation plates. According to the bucket type sedimentation tank disclosed by the utility model, mud-water separation is realized by adopting central multi-point water feeding and bucket type sedimentation, so that the uniform water distribution capability is improved, the disturbance to a sedimentation area is reduced, the mud-water separation effect is improved, and the problem that a mud-water separation system in the related technology occupies a large area is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely relates to a bucket type sedimentation tank. BACKGROUND

[0002] The sedimentation process is a common process unit in water treatment, and in the related art, sedimentation tanks can be classified into horizontal flow type, vertical flow type and radial flow type according to different water flow modes. The biggest problem of the horizontal flow type sedimentation tank is that the land occupation area is relatively large, the vertical flow type sedimentation tank has small surface load and poor treatment effect, and is rarely used, and the radial flow type sedimentation tank is mainly used for pre-sedimentation of high turbidity water. There is also a shallow inclined plate (tube) sedimentation tank, which has good sludge-water separation effect, but the inclined plate (tube) structure is complex, replacement is troublesome, mechanical sludge discharge is required, the inclined plate (tube) is prone to aging due to long-term attachment of pollutants, and needs to be replaced and backwashed regularly to improve the sludge-water separation effect. SUMMARY

[0003] The utility model aims at at least in a certain extent solves one of the technical problems in the related art.

[0004] Therefore, the embodiment of the utility model provides a bucket type sedimentation tank, which realizes sludge-water separation by adopting central multi-point water inlet and bucket type sedimentation, can operate at high load, reduces land occupation area, improves sedimentation effect, greatly solves the problems of low load, large land occupation and complex design of the traditional sludge-water sedimentation process, and provides a new solution for the sludge-water separation process in the water treatment industry.

[0005] The bucket type sedimentation tank according to the embodiment of the utility model comprises a barrel, a plurality of sludge-water separation plates, a water inlet pipe, a sludge discharge pipe and a water outlet pipe, one end of the barrel is open in a first direction, the sludge-water separation plate is in the shape of a bucket and has a first large opening end and a first small opening end, a plurality of the sludge-water separation plates are arranged in the barrel in the first direction to form a sludge-water separation zone, the first large opening end faces the one end of the barrel, the first large opening end is spaced apart from the inner wall surface of the barrel, the water inlet pipe comprises a connecting section and a water distribution section connected with each other, the connecting section is arranged on the barrel, the water distribution section is arranged in the first small opening end of the plurality of sludge-water separation plates, the water distribution section faces the one end of the barrel, the water distribution section is spaced apart from the first small opening end in a second direction, the second direction is perpendicular to the first direction, a plurality of water distribution openings are arranged on the water distribution section in a spaced apart mode, the plurality of water distribution openings are located in the sludge-water separation zone, and at least one water distribution opening is arranged between adjacent two sludge-water separation plates, and the sludge discharge pipe and the water outlet pipe are arranged on the one end of the barrel.

[0006] The utility model discloses a hopper type sedimentation tank, adopt central multiple point water inlet, hopper type subsides and realize mud water separation, can high load operation, reduce the floor area, promote subsidence effect, greatly solved traditional mud water sedimentation process load low, large, design complex etc. Problem, provide new solution for water treatment industry mud water separation process.

[0007] In some embodiments, the hopper type sedimentation tank further comprises a reflecting plate, the reflecting plate is sleeved on the water distribution section, the reflecting plate is located on one side of the mud water separation zone adjacent to the connecting section, and the reflecting plate is spaced apart from the first small opening end of the mud water separation plate.

[0008] In some embodiments, the reflecting plate is provided with a tapered flow guide surface, the tapered flow guide surface has a sharp end and a diameter expanding end, and the sharp end faces the mud water separation zone.

[0009] In some embodiments, the diameter of the water distribution opening is 3-5 cm; and / or, in the first direction, the distance between adjacent water distribution openings is 5-30 cm; and / or, the first large opening end of the mud water separation plate located at the one end of the barrel away from the barrel is provided with a closing plate, and the closing plate is connected with the inner wall surface of the barrel.

[0010] In some embodiments, the hopper type sedimentation tank further comprises a connecting plate, the connecting plate is arranged at the end of the water distribution section, the connecting plate is connected with the first small opening end of the adjacent mud water separation plate, and the connecting plate is provided with a through hole.

[0011] In some embodiments, the hopper type sedimentation tank further comprises an overflow weir, the overflow weir is arranged at the one end of the barrel, a water collecting tank is surrounded between the overflow weir and the barrel, and the inlet of the water outlet pipe is in communication with the water collecting tank.

[0012] In some embodiments, the hopper type sedimentation tank further comprises a slag baffle and a slag scraper, the slag baffle is located on the inner side of the overflow weir, the inlet of the slag discharge pipe is located on the inner side of the slag baffle, the slag scraper is arranged at the one end of the barrel, the slag scraper has a slag scraping strip, and the slag scraping strip is adjacent to the inlet of the slag discharge pipe in the first direction.

[0013] In some embodiments, the hopper type sedimentation tank further comprises a flow guide plate, the flow guide plate is in the shape of a hopper and has a second large opening end and a second small opening end, the second large opening end is connected with the inner wall surface of the barrel, the flow guide plate is arranged between the mud water separation zone and the overflow weir, and the projection plane of the second small opening end in the first direction covers the projection plane of the first small opening end in the first direction.

[0014] In some embodiments, the inclination angles of the deflector and the sludge-water separation plate are equal.

[0015] In some embodiments, the other end of the cylinder in the first direction is a sludge hopper, and the sludge hopper is provided with a sludge discharge port. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the bucket type sedimentation tank of the embodiment of the present application;

[0017] Figure 2 is Figure 1 is a sectional view of A-A in FIG.

[0018] Figure 3 is Figure 1 is a sectional view of B-B in FIG.

[0019] Reference signs:

[0020] bucket type sedimentation tank 100,

[0021] cylinder 1, sludge hopper 101, sludge-water separation plate 2, first large end 201, first small end 202, water inlet pipe 3, connecting section 31, water distribution section 32, water distribution port 321, slag discharge pipe 4, water outlet pipe 5, reflecting plate 6, closing plate 7, connecting plate 8, overflow weir 9, water collecting tank 91, slag blocking plate 10, slag scraper 11, slag scraping strip 1101, deflector 12, second large end 1201, second small end 1202. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0023] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Figures 1 to 3 The bucket type sedimentation tank 100 of the embodiment of the present application is described in detail below.

[0024] The bucket type sedimentation tank 100 of the embodiment of the present application includes a cylinder 1, a water inlet pipe 3, a slag discharge pipe 4, a water outlet pipe 5, and a plurality of sludge-water separation plates 2. The cylinder 1 is in a first direction (for example, the vertical direction) and has a first large end 201 and a first small end 202. Figure 2 and Figure 3The bucket type sedimentation tank 100 comprises a barrel-shaped cylinder body 1 and a plurality of mud-water separation plates 2. The cylinder body 1 is provided with an open end in a first direction (for example, the vertical direction in the drawing). The mud-water separation plates 2 are in the shape of a bucket and have a first large opening end 201 and a first small opening end 202. The plurality of mud-water separation plates 2 are arranged in the cylinder body 1 in the first direction and form a mud-water separation zone. The first large opening end 201 faces the open end of the cylinder body 1 and is spaced apart from the inner wall surface of the cylinder body 1. The water inlet pipe 3 comprises a connecting section 31 and a water distribution section 32. The connecting section 31 is arranged on the cylinder body 1, and the water distribution section 32 is arranged in the first small opening end 202 of the plurality of mud-water separation plates 2. The water distribution section 32 faces the open end of the cylinder body 1 and is spaced apart from the first small opening end 202 in a second direction (for example, the horizontal direction in the drawing). The second direction is perpendicular to the first direction. The water distribution section 32 is provided with a plurality of water distribution openings 321. The plurality of water distribution openings 321 are located in the mud-water separation zone, and there is at least one water distribution opening 321 between adjacent two mud-water separation plates 2. The residue discharge pipe 4 and the water outlet pipe 5 are arranged on the open end of the cylinder body 1.

[0025] In the use state of the bucket type sedimentation tank 100, the first direction is the same as the vertical direction, and the second direction is the horizontal direction. For example, the second direction is the left-right direction or the front-rear direction in the horizontal direction. The open end of the cylinder body 1 in the first direction is the upper end of the cylinder body 1. Therefore, the upper end of the cylinder body 1 is open, the water distribution section 32 extends in the vertical direction, the water distribution section 32 faces the upper end of the cylinder body 1, and the water inlet section is located on the lower side of the water distribution section 32.

[0026] In the use state of the bucket type sedimentation tank 100, sewage flows into the cylinder body 1 through the water inlet pipe 3, flows upward from the connecting section 31 on the lower side to the water distribution section 32, and flows outwards through the water distribution openings 321 on the water distribution section 32. Since the plurality of water distribution openings 321 are located in the mud-water separation zone, the sewage discharged from the water distribution section 32 is uniformly distributed in the mud-water separation zone, and the mud-water mixture is separated in the mud-water separation plates 2. The separated water flows from the lower end to the upper end along the flow direction of the sewage, flows upward through the gap between the first large opening end 201 and the inner wall surface of the cylinder body 1, flows to the upper end of the cylinder body 1, and is discharged from the cylinder body 1 through the water outlet pipe 5. The floating sludge particles with smaller density in the water float to the water surface and are discharged through the residue discharge pipe 4. The separated sediment settles downward along the wall surface of the mud-water separation plates 2, then passes through the first small opening end 202 of the mud-water separation plates 2 and continues to settle downward, and finally settles to the lower end of the cylinder body 1.

[0027] The utility model discloses a hopper type sedimentation tank 100, through the water distribution section 32 of first small mouth end 202 of being arranged in a plurality of sludge -water separation board 2 realizes center multi -point water distribution (water inlet), has promoted the even water distribution ability, makes a plurality of sludge -water separation board 2 all participate in the sludge -water separation of sewage, and, sludge -water separation board 2 is the hopper type, and the wall surface of sludge -water separation board 2 that inclines downward is not easy to accumulate, adsorbs particulate matter, makes water and the separation effect of precipitate be good, thereby not only make the hopper type sedimentation tank 100 of the utility model embodiment can withstand high load operation, also promote the sludge -water separation effect, then solve the problem of the large area of sewage sedimentation tank, the poor sludge -water separation effect in relevant art, and, make sludge -water separation board use cycle long, benefit to promote the use cycle of the hopper type sedimentation tank 100 of the utility model embodiment. Meanwhile, the setting of water inlet pipe 3 makes sewage flow from below to above, multi -point water distribution, makes water distribution area (that is sludge -water separation area) and sedimentation area (the precipitate accumulation area of the lower end of cylinder 1) distinguish, thereby reduced the disturbance and influence of the lower end sedimentation area of cylinder 1 in the water inlet process, thereby promoted the impact resistance of hopper type sedimentation tank 100, guaranteed the sludge -water separation effect of hopper type sedimentation tank 100.

[0028] Therefore, the hopper type sedimentation tank 100 of the utility model embodiment, center multi -point water distribution, has promoted the even water distribution ability, reduced the disturbance to the sedimentation area, promoted the sludge -water separation effect, solved the problem of the large area of sludge -water separation system in relevant art.

[0029] Specifically, the profile of the cross section of the cylinder 1 in the second direction is circular.

[0030] As shown in Figures 1 to 3 The upper part of the cylinder 1 is a circular cylinder. The other end (lower end) of the cylinder 1 in the first direction is a hopper 101, and the hopper 101 is provided with a sludge discharge port. The sediment produced by sludge-water separation sinks into the hopper 101 at the lower end of the cylinder 1, and the hopper 101 forms a sediment accumulation area. The hopper 101 is provided with a sludge discharge port, and the hopper type sedimentation tank 100 of the utility model embodiment adopts static pressure sludge discharge, thereby facilitating energy saving and consumption reduction.

[0031] In other embodiments, the sludge discharge port is provided with a static pressure pipe, and a negative pressure suction pump is arranged on the static pressure pipe to discharge the sediment in the hopper 101.

[0032] The plurality of sludge-water separation boards 2 are arranged above and below the center axis of the cylinder 1, and the sludge-water separation boards 2 are connected to the cylinder 1 by a support frame (not shown in the figure).

[0033] The connecting section 31 of the water inlet pipe 3 extends along the second direction, and the connecting section 31 is located at the connection between the circular cylinder and the hopper 101.

[0034] In some embodiments, the diameter of the water inlet 321 is 3-5 cm. For example, the diameter of the water inlet 321 is 3 cm, 4 cm, or 5 cm. In this first direction, the distance between adjacent water inlets 321 is 5-30 cm. For example, the distance between adjacent water inlets 321 is 5 cm, 6 cm, 10 cm, 20 cm, or 30 cm.

[0035] like Figure 2 and Figure 3 As shown, in the axial direction (the first direction) of the water distribution section 32, there are three water distribution ports 321 between two adjacent mud-water separation plates 2. Multiple water distribution ports 321 are arranged in a ring at intervals in the circumferential direction of the water distribution section 32. The water distribution ports 321 between two adjacent mud-water separation plates 2 are grouped together. The distance between the water distribution ports 321 in a group is smaller in the first direction, while the distance between the water distribution ports 321 in adjacent groups is larger in the first direction.

[0036] Furthermore, a sealing plate 7 is provided on the first large opening end 201 of the mud-water separation plate 2 located at the end (upper end) away from the cylinder 1 in the mud-water separation zone. In other words, a sealing plate 7 is provided on the first large opening end 201 of the mud-water separation plate 2 located at the lower end of the mud-water separation zone, and the sealing plate 7 is connected to the inner wall surface of the cylinder 1. As a result, the gap between the first large opening end 201 of the mud-water separation plate 2 located at the lower end and the inner wall surface of the cylinder 1 is sealed, so that the first small opening end 202 of the mud-water separation plate 2 located at the lower end becomes the fluid flow path, that is, the sediment sinks into the sedimentation area and flows through the gap between the first small opening end 202 of the mud-water separation plate 2 located at the lower end and the water distribution section 32.

[0037] In some embodiments, the bucket sedimentation tank 100 further includes a reflector plate 6, which is sleeved on the water distribution section 32. The reflector plate 6 is located on the side of the mud-water separation zone adjacent to the connecting section 31, and is spaced apart from the first small opening end 202 of the mud-water separation plate 2. The sediment discharged from the mud-water separation zone continues to settle downwards through the reflector plate 6. When the sediment flows through the reflector plate 6, it flows along the upper surface of the reflector plate 6 and is guided by the reflector plate 6, thus separating the sediment from the connection between the water inlet section and the water distribution section 32, preventing the sediment from accumulating on the water inlet pipe 3, and effectively reducing the impact of the water inlet pipe 3 on the sediment settling process.

[0038] Furthermore, the reflector plate 6 is provided with a conical guide surface, which has a pointed tip and an expanded diameter end, with the pointed tip facing the mud-water separation zone. The conical guide surface is the upper surface of the reflector plate 6, guiding the sedimentation process of the precipitate and preventing the accumulation and adhesion of sediment, thus ensuring the sedimentation process and further guaranteeing the mud-water separation effect of the bucket sedimentation tank 100 in this embodiment of the present invention.

[0039] In some embodiments, the hopper type sedimentation tank 100 further comprises a connecting plate 8, which is arranged at the end of the water distribution section 32, i.e. the upper end of the water distribution section 32, and is connected with the first small opening end 202 of the adjacent sludge-water separation plate 2, and the connecting plate 8 is provided with a through hole. The connecting plate 8 connects the upper end of the water distribution section 32 and the first small opening end 202 of the sludge-water separation plate 2 on the upper side of the sludge-water separation zone, reduces the flow gap between the upper end of the water distribution section 32 and the sludge-water separation plate 2 on the upper side, reduces the amount of sewage directly flowing upward from the water distribution opening 321 of the upper end of the water distribution section 32 and passing through the sludge-water separation zone, ensures that most of the sewage is subjected to sludge-water separation in the sludge-water separation zone, and at the same time, the particles precipitated from the water clarification area on the upper side of the sludge-water separation zone sink from the through hole of the connecting plate 8, thereby facilitating the reduction of the sedimentation path of the precipitate, and further improving the sludge-water separation effect of the hopper type sedimentation tank 100.

[0040] In some embodiments, the hopper type sedimentation tank 100 further comprises an overflow weir 9 and a flow guide plate 12. The overflow weir 9 is arranged at the one end (upper end) of the cylinder body 1, and the overflow weir 9 and the cylinder body 1 surround a water collecting groove 91 therebetween, and the inlet of the water outlet pipe 5 communicates with the water collecting groove 91. The flow guide plate 12 is in the shape of a hopper and has a second large opening end 1201 and a second small opening end 1202, the second large opening end 1201 is connected with the inner wall surface of the cylinder body 1, the flow guide plate 12 is arranged between the sludge-water separation zone and the overflow weir 9, and the projection face of the second small opening end 1202 in the first direction covers the projection face of the first small opening end 202 in the first direction, in other words, the aperture of the second small opening end 1202 is larger than the aperture of the first small opening end 202.

[0041] The water flowing upward from the sludge-water separation zone continues to rise into the water clarification area, flows upward along the direction of the flow guide plate 12 after passing through the second small opening end 1202, flows to the edge of the overflow weir 9, and when the water level exceeds the height of the overflow weir 9, flows to the water collecting groove 91 and is discharged from the water outlet, while the particles in the water flowing through the flow guide plate 12 gradually sink on the flow guide plate 12 and sink downward, and are precipitated at the lowest end of the water clarification area, i.e. the position of the connecting plate 8, and then continue to precipitate downward from the through hole of the connecting plate 8.

[0042] The hopper-shaped flow guide plate 12 is inclined, as shown in Figure 2 and Figure 3 The inclined flow guide plate 12 has a similar effect as the sludge-water separation plate 2, both can guide the precipitate after separation, so that the water and the precipitate are separated well, thereby shortening the sedimentation path of the particles, reducing the sedimentation time, and improving the sedimentation efficiency. Specifically, the inclination angles of the flow guide plate 12 and the sludge-water separation plate 2 are equal.

[0043] The bucket type sedimentation tank 100 further comprises a slag baffle 10 and a slag scraper 11, the slag baffle 10 is located on the inner side of the overflow weir 9, the inlet of the slag discharge pipe 4 is located on the inner side of the slag baffle 10, the slag scraper 11 is arranged at one end of the barrel 1, the slag scraper 11 has a slag scraping strip 1101, the slag scraping strip 1101 is adjacent to the inlet of the slag discharge pipe 4 in the first direction. The floating slag particles with smaller density in water flow upward with water, when the floating slag particles float to the water surface, the slag scraper 11 starts to drive the slag scraping strip 1101 to rotate, so as to collect the floating slag, and push the concentrated floating slag into the slag discharge pipe 4, and then the slag discharge pipe 4 is arranged outside the barrel 1, so that the suspended matter concentration of the produced water is effectively reduced, and the mud-water separation effect of the bucket type sedimentation tank 100 is further improved.

[0044] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0045] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0046] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0048] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0049] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A basin (100) for sedimentation of sludge, characterized in that The mud-water separation device comprises a barrel (1) with an open end in a first direction; a plurality of mud-water separation plates (2) in the shape of a bucket with a first large opening end (201) and a first small opening end (202), the plurality of mud-water separation plates (2) are arranged in the barrel (1) in the first direction to form a mud-water separation area, the first large opening end (201) is directed towards the open end of the barrel (1), and the first large opening end (201) is spaced apart from the inner wall surface of the barrel (1); a water inlet pipe (3) comprising a connecting section (31) and a water distribution section (32), the connecting section (31) is arranged on the barrel (1), the water distribution section (32) is arranged in the first small opening end (202) of the plurality of mud-water separation plates (2), the water distribution section (32) is directed towards the open end of the barrel (1), the water distribution section (32) is spaced apart from the first small opening end (202) in a second direction, the second direction is perpendicular to the first direction, and a plurality of water distribution openings (321) are arranged on the water distribution section (32) in the mud-water separation area, and there is at least one water distribution opening (321) between adjacent two mud-water separation plates (2); a residue discharge pipe (4) and a water outlet pipe (5) arranged on the open end of the barrel (1). Further comprising a reflecting plate (6) arranged on the water distribution section (32), the reflecting plate (6) is located on the side of the mud-water separation area adjacent to the connecting section (31), and the reflecting plate (6) is spaced apart from the first small opening end (202) of the mud-water separation plate (2). The reflecting plate (6) is provided with a tapered flow guide surface with a pointed end and a diameter expanding end, and the pointed end is directed towards the mud-water separation area. The diameter of the water distribution opening (321) is 3-5 cm, and / or the distance between adjacent water distribution openings (321) in the first direction is 5-30 cm. Further comprising a connecting plate (8) arranged at the end of the water distribution section (32), the connecting plate (8) is connected to the first small opening end (202) of the adjacent mud-water separation plate (2), and the connecting plate (8) is provided with a through hole; and / or a closing plate (7) arranged on the first large opening end (201) of the mud-water separation plate (2) away from the open end of the barrel (1), and the closing plate (7) is connected to the inner wall surface of the barrel (1).

2. The hopper settler (100) according to claim 1, characterized in that Further comprising an overflow weir (9) arranged on the open end of the barrel (1), and a water collecting tank (91) is formed between the overflow weir (9) and the barrel (1), and the inlet of the water outlet pipe (5) is in communication with the water collecting tank (91).

3. The hopper settler (100) according to claim 2, characterized in that ​ 4. The hopper settler (100) according to claim 1, characterized in that ​ 5. The hopper settler (100) according to claim 1, characterized in that ​ 6. The hopper settler (100) according to claim 1, characterized in that ​ 7. The hopper settler (100) according to claim 6, characterized in that Further comprising a slag baffle (10) and a slag scraper (11), the slag baffle (10) is located at the inner side of the overflow weir (9), the inlet of the slag discharge pipe (4) is located at the inner side of the slag baffle (10), the slag scraper (11) is arranged at the one end of the barrel (1), the slag scraper (11) has a slag scraping strip (1101), the slag scraping strip (1101) is adjacent to the inlet of the slag discharge pipe (4) in the first direction.

8. The hopper settler (100) according to claim 6, characterized in that Further comprising a flow guide plate (12), the flow guide plate (12) is a bucket shape and has a second large end (1201) and a second small end (1202), the second large end (1201) is connected with the inner wall surface of the barrel (1), the flow guide plate (12) is arranged between the sludge-water separation area and the overflow weir (9), the projection plane of the second small end (1202) in the first direction covers the projection plane of the first small end (202) in the first direction.

9. The hopper settler (100) according to claim 8, characterized in that The inclination angles of the flow guide plate (12) and the sludge-water separation plate (2) are equal.

10. The hopper settler (100) according to claim 6, characterized in that The other end of the barrel (1) in the first direction is a sludge bucket (101), the sludge bucket (101) is provided with a sludge discharge port.

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