CN219701174U

CN219701174U - Sewage sedimentation tank

Info

Publication number: CN219701174U
Application number: CN202320995295.5U
Authority: CN
Inventors: 何博; 田义臣; 胡仁权; 杨剑兵; 陈恒文; 游林
Original assignee: Chongqing Pengshui Drainage Co ltd
Current assignee: Chongqing Haoyang Water Construction Management Co ltd Pengshui Sewage Treatment Plant
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-09-19
Anticipated expiration: 2033-04-27

Abstract

The utility model discloses a sewage sedimentation tank, which comprises a tank body, wherein the tank body consists of an inner sedimentation tank and an outer clean water tank, the inner sedimentation Chi Hengjie is circular and consists of an upper water inlet area, a middle silt area and a lower sedimentation area, the upper water inlet area and the middle silt area and the lower sedimentation area are connected through a cone cylinder, and the diameter of the cone cylinder is gradually reduced from top to bottom; a rotating shaft which is vertically arranged is arranged in the middle of the inner sedimentation tank, a plurality of cleaning brushes corresponding to the cone cylinder bodies are arranged on the rotating shaft at intervals, and the end parts of the cleaning brushes are attached to the cone cylinder bodies corresponding to the cleaning brushes; the lower end of the rotating shaft is provided with a helical blade along the axial direction of the rotating shaft; a sludge pump is arranged outside the inner sedimentation tank, and the sludge pump is communicated with the bottom of the inner sedimentation tank through a sludge discharge pipe; the upper end of the inner sedimentation tank is provided with a flow guide pipe which is communicated with the outer end of the inner sedimentation tank and the outer clean water tank.

Description

Sewage sedimentation tank

Technical Field

The utility model relates to the field of sewage treatment, in particular to a sewage sedimentation tank.

Background

Sedimentation tanks are a structure for removing suspended matters in water by sedimentation, and are widely used in wastewater treatment. The method has the functions of separating mud from water, clarifying the mixed liquor, concentrating the sludge and refluxing the separated sludge to the biological treatment section. In order to accelerate the sewage sedimentation speed, the prior sewage sedimentation tank is generally provided with an inclined slope surface at the bottom of the tank, and is guided to be piled up by the slope surface and pumped out by a sludge pump. However, the slope surface adopted generates a large amount of mud and dirt after long-term application, and needs to be cleaned regularly. The existing cleaning mechanism has single function, and can only clean the sinking bottom, so that the function is single. Meanwhile, in the sludge pump suction process after the sludge is deposited, if the sludge is deposited more, the sludge pump suction is difficult. Based on this, the applicant considered to improve the cleaning mechanism of the sedimentation tank so that it could not only clean but also push the sludge to move in the direction of the pump pipe.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a sewage sedimentation tank, which solves the problems that the cleaning mechanism of the existing sewage sedimentation tank has single function, and the sludge suction is easy to be blocked or slow in the pumping process of the existing sedimentation tank.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the sewage sedimentation tank comprises a tank body, wherein the tank body consists of an inner sedimentation tank and an outer clean water tank, the inner sedimentation Chi Hengjie is circular and consists of an upper water inlet area, a middle silt area and a lower sedimentation area, the upper water inlet area and the middle silt area and the lower sedimentation area are connected through a cone cylinder, and the diameter of the cone cylinder is gradually reduced from top to bottom; a rotating shaft which is vertically arranged is arranged in the middle of the inner sedimentation tank, a plurality of cleaning brushes corresponding to the cone cylinder bodies are arranged on the rotating shaft at intervals, and the end parts of the cleaning brushes are attached to the cone cylinder bodies corresponding to the cleaning brushes; the lower end of the rotating shaft is provided with a helical blade along the axial direction of the rotating shaft; a sludge pump is arranged outside the inner sedimentation tank, and the sludge pump is communicated with the bottom of the inner sedimentation tank through a sludge discharge pipe; the upper end of the inner sedimentation tank is provided with a flow guide pipe which is communicated with the outer end of the inner sedimentation tank and the outer clean water tank. Like this, the sedimentation tank divide into three district, and the diameter is by big grow to form the inclined plane of cone barrel between two adjacent districts, this setting can be in the sedimentation process, with the quick downwardly flowing of silt through the cone barrel, thereby accelerates the sedimentation rate of sedimentation tank. The sedimentation tank is integrally in a structure with big top and small bottom, and the sludge can be rapidly accumulated in the lower sedimentation area through the arrangement. The cleaning brushes corresponding to the cone barrels are arranged on the rotating shaft, and are attached to the cone barrels, so that after the rotating shaft rotates, the cleaning brushes can be driven to rotate circumferentially, and mud deposited on the cone barrels is scraped out, and cleaning is achieved. Simultaneously, after the rotation of the rotating shaft, the sludge at the bottom can flow in the direction of the sludge discharge pipe by pushing of the spiral blades, and the mode can effectively push the sludge at the bottom to avoid the blockage of the sludge at the sludge discharge pipe.

Further, a motor is arranged above the inner sedimentation tank, and an output shaft of the motor is connected with the rotating shaft. Like this, through motor direct drive pivot to the direction of rotation of pivot is convenient for control, and the drive is comparatively stable.

Further, the cleaning brush comprises a brush rod and a brush head, wherein the brush head is plate-shaped and is made of rubber. Therefore, the brush head of the cleaning brush has certain flexibility, and can clean the inner wall of the cone cylinder body when moving along with the circumferential direction of the rotating shaft. And in the circumferential movement process, the inner wall of the cone cylinder body cannot be scratched.

Further, the brush head and the brush rod are detachably connected, an internal thread sleeve is arranged on one side, close to the brush rod, of the brush head, external threads are arranged at the tail end of the brush rod, and the end part of the brush rod is connected with the brush head through the internal thread sleeve. Therefore, when the cleaning side of the brush head is worn after long-time use, the brush head can be directly rotated to finely adjust the position of the brush head, so that the brush head is always clung to the cone cylinder body.

Further, the cleaning brushes are arranged in four, two pairs of cleaning brushes are symmetrically arranged on the rotating shaft in a bilateral symmetry mode. Therefore, the cleaning brushes are small in number, limited in stirring force for sewage in the sedimentation tank and free from influencing sludge sedimentation.

Further, stirring blades are arranged at the bottom of the rotating shaft. Like this, the stirring blade that sets up in the pivot bottom can further promote the silt that is close to mud pipe department, avoids this place silt deposit too close back, blocks up mud pipe.

Further, at least one water inlet pipe is arranged at the upper end of the inner sedimentation tank, a filter screen is arranged above the inner sedimentation tank and below the water inlet pipe, and the filter screen is arranged at one side of the rotating shaft. Thus, after the sewage is introduced into the inner sedimentation tank by the water inlet pipe, the filter screen of the inner sedimentation tank can filter scum in the sewage, so that the scum is filtered on the filter screen.

Further, a side wall integrally formed with the filter screen is arranged on the periphery of the filter screen, and the upper edge of the side wall is hung on the inner sedimentation tank after being bent outwards. Therefore, the filter screen is assembled on the inner sedimentation tank in a hanging mode, and when the scum on the filter screen is more, the filter screen can be directly lifted to clean the scum.

Drawings

FIG. 1 is a schematic elevation view of a sewage sedimentation tank in an embodiment;

fig. 2 is a plan view of a tank body in the sewage sedimentation tank in the embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 and 2, the sewage sedimentation tank disclosed in the embodiment comprises a tank body, wherein the tank body consists of an inner sedimentation tank 1 and an outer clean water tank 3, the cross section of the inner sedimentation tank 1 is circular and consists of an upper water inlet area, a middle silt area and a lower sedimentation area, the upper water inlet area and the middle silt area and the lower sedimentation area are connected through a cone cylinder 11, and the diameter of the cone cylinder 11 is gradually reduced from top to bottom; a rotating shaft 2 which is vertically arranged is arranged in the middle of the inner sedimentation tank 1, the rotating shaft 2 is driven by a motor 21, a plurality of cleaning brushes 4 corresponding to the cone cylinder bodies 11 are arranged on the rotating shaft 2 at intervals, and the end parts of the cleaning brushes 4 are attached to the cone cylinder bodies 11 corresponding to the cleaning brushes; a helical blade 22 is arranged at the lower end of the rotating shaft 2 along the axial direction thereof; a sludge pump 6 is arranged outside the inner sedimentation tank 1, and the sludge pump 6 is communicated with the bottom of the inner sedimentation tank 1 through a sludge discharge pipe 5; the upper end of the inner sedimentation tank 1 is provided with a flow guide pipe 9 which is communicated with the outer end and the outer clean water tank 3. Under the drive of the motor 21, the rotating shaft 2 rotates, so that the cleaning brush 4 is driven to move circumferentially, and the cone cylinder 11 of the inner sedimentation tank 1 is cleaned. The output rotating speed of the motor 21 is controlled, so that the rotating speed of the rotating shaft 2 can be controlled, and the condition that the sewage in the inner sedimentation tank 1 is disturbed greatly in the cleaning process is effectively ensured. And can realize the cleanness, simultaneously, when adding the flocculating agent in the initial stage, can control motor 21 output great rotational speed, agitate sewage through cleaning brush 4, mix flocculating agent and sewage, and then redeposit. The spiral blades 22 have a certain pushing effect on the settled sludge, and can effectively push the sludge to move towards the sludge discharge pipe 5. The mud discharging pipe 5 in the embodiment is arranged outside the inner sedimentation tank 1 and the outer clean water tank 3, one end of the mud discharging pipe extends upwards into the bottom of the inner sedimentation tank 1, and the other end of the mud discharging pipe is connected with the mud pump 6. The sludge can be pumped into the backward process by the sludge pump 6, and the sludge is reprocessed and recycled. The bottom area of the outer clean water tank 3 is large and is connected with the inner sedimentation tank 1, so that effective support for the inner sedimentation tank 1 can be formed. Meanwhile, the upper ends of the outer clean water tank 3 and the inner sedimentation tank 1 are communicated through a guide pipe 9, so that clean water above the inner sedimentation tank 1 can be introduced into the outer clean water tank 3 through the guide pipe 9 in the sedimentation process. Of course, in order to avoid the foreign substances, a filtering device may be provided at the front end of the guide pipe 9 or on the guide pipe 9. In addition, in order to accelerate the flow guiding speed of clear water, the outer side of the flow guiding pipe 9 close to one side of the inner sedimentation tank 1 is obliquely arranged downwards.

The cleaning brush 4 in this embodiment includes a brush bar 41 and a brush head 42, and the brush head 42 is plate-shaped and made of rubber. The brush head 42 is detachably connected with the brush rod 41, an internal thread sleeve is arranged on one side of the brush head 42, which is close to the brush rod 41, an external thread is arranged at the tail end of the brush rod 41, and the end part of the brush rod 41 is connected with the brush head 42 through the internal thread sleeve.

Specifically, the cleaning brushes 4 are arranged in four pairs and are symmetrically arranged on the rotating shaft 2 in a left-right mode. To ensure the strength of the brush holders 41, a reinforcing rod 43 is connected between each brush holder 41 and the rotating shaft 2.

In order to avoid that the sludge at the bottom of the pool is too dense under the action of gravity and is inconvenient to be led into the sludge discharge pipe 5, the bottom of the rotating shaft 2 is also provided with stirring blades 23. The stirring blades 23 may be provided in several numbers with gaps between the blades, and the blades are disposed obliquely as a whole.

At least one water inlet pipe 7 is arranged at the upper end of the inner sedimentation tank 1, a filter screen 8 is arranged above the inner sedimentation tank 1 and below the water inlet pipe 7, and the filter screen 8 is arranged at one side of the rotating shaft 2. The periphery of the filter screen 8 is provided with a side wall which is integrally formed with the filter screen, and the upper edge of the side wall is hung on the inner sedimentation tank 1 after being bent outwards. In specific implementation, the side wall of the filter screen 8 is hung on a lifting rod through a hook, the end part of the lifting rod is placed on the upper edge of the inner sedimentation tank 1, and the lifting rod can be lifted by a chain block or other lifting devices, so that the filter screen 8 is lifted out of the inner sedimentation tank 1, and the scum in the filter screen is cleaned.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the technical solution, and those skilled in the art should understand that modifications and equivalents may be made to the technical solution of the present utility model without departing from the spirit and scope of the present utility model, and all such modifications and equivalents are included in the scope of the claims.

Claims

1. The sewage sedimentation tank comprises a tank body, and is characterized in that the tank body consists of an inner sedimentation tank and an outer clean water tank, wherein the inner sedimentation Chi Hengjie is circular and consists of an upper water inlet area, a middle silt area and a lower sedimentation area, the upper water inlet area and the middle silt area and the lower sedimentation area are connected through a cone cylinder, and the diameter of the cone cylinder is gradually reduced from top to bottom; a rotating shaft which is vertically arranged is arranged in the middle of the inner sedimentation tank, a plurality of cleaning brushes corresponding to the cone cylinder bodies are arranged on the rotating shaft at intervals, and the end parts of the cleaning brushes are attached to the cone cylinder bodies corresponding to the cleaning brushes; the lower end of the rotating shaft is provided with a helical blade along the axial direction of the rotating shaft; a sludge pump is arranged outside the inner sedimentation tank, and the sludge pump is communicated with the bottom of the inner sedimentation tank through a sludge discharge pipe; the upper end of the inner sedimentation tank is provided with a flow guide pipe which is communicated with the outer end of the inner sedimentation tank and the outer clean water tank.

2. The wastewater sedimentation tank of claim 1, wherein a motor is arranged above the inner sedimentation tank, and an output shaft of the motor is connected with the rotating shaft.

3. The wastewater sedimentation tank of claim 1 or 2, wherein the cleaning brush comprises a brush rod and a brush head, and the brush head is plate-shaped and made of rubber.

4. A wastewater sedimentation tank according to claim 3, wherein the brush head is detachably connected with the brush rod, an internal thread sleeve is arranged on one side of the brush head close to the brush rod, an external thread is arranged at the tail end of the brush rod, and the end part of the brush rod is connected with the brush head through the internal thread sleeve.

5. The wastewater sedimentation tank of claim 4, wherein the cleaning brushes are arranged in four pairs and are symmetrically arranged on the rotating shaft.

6. The wastewater sedimentation tank of claim 1 or 2 or 4 or 5, wherein stirring blades are further provided at the bottom of the rotating shaft.

7. The wastewater sedimentation tank of claim 6, wherein at least one water inlet pipe is arranged at the upper end of the inner sedimentation tank, and a filter screen is arranged above the inner sedimentation tank and below the water inlet pipe, and the filter screen is arranged at one side of the rotating shaft.

8. The wastewater sedimentation tank of claim 7, wherein a side wall integrally formed with the filter screen is arranged on the periphery of the filter screen, and the upper edge of the side wall is hung on the inner sedimentation tank after being bent outwards.