CN210796003U

CN210796003U - Rotational flow sewage purification equipment

Info

Publication number: CN210796003U
Application number: CN201921015089.3U
Authority: CN
Inventors: 耿明山; 向继涛
Original assignee: MCC Capital Engineering and Research Incorporation Ltd
Current assignee: MCC Capital Engineering and Research Incorporation Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-06-19
Anticipated expiration: 2029-07-02

Abstract

The utility model provides a whirl sewage purification equipment, include: the spiral guide plate is arranged in the cyclone settling chamber, the outer contour of the guide plate shrinks from outside to inside along the direction from top to bottom, and the center of the guide plate is provided with a guide channel which is communicated up and down; the side wall of the cyclone settling chamber is provided with a cyclone inlet facing the guide plate; the top wall of the cyclone settling chamber is provided with a cyclone outlet, and the upper end of the flow guide channel is communicated with the cyclone outlet so that sewage to be treated flows out through the cyclone outlet after being guided to the flow guide channel by the guide plate. Through the utility model discloses, the relatively poor technical problem of effect of getting rid of solid particle impurity that turbid circulating water treatment facilities among the prior art exists has been alleviated.

Description

Rotational flow sewage purification equipment

Technical Field

The utility model relates to a sewage treatment technical field especially relates to a whirl sewage purification equipment.

Background

In the steel industry, the traditional turbid circulating water system of a continuous casting and hot rolling production line generally adopts the following treatment process, slag flushing sewage from the production line enters a primary sedimentation tank or a rotational flow tank by virtue of gravity flow, effluent is sent to a chemical dirt separator or a rare earth magnetic disc or a secondary sedimentation tank through a primary booster pump station, effluent is sent to a cooling tower for cooling through a secondary booster pump station through a filter or directly, and then is sent to the continuous casting or hot rolling production line through a tertiary booster pump station for cleaning the surface of a product or cooling the product, and the generated slag flushing sewage continuously circulates in the same way. The sludging sewage which is continuously circulated in this way is also called turbid circulating water. During the circulation, solid particle impurities in the turbid circulating water are removed to stabilize the quality of the turbid circulating water returned to the continuous casting or hot rolling line.

The sewage purification process such as coagulation, sedimentation and clarification is generally adopted to remove solid particle impurities in the turbid circulating water. However, the turbid circulating water treatment equipment in the prior art has the technical problem of poor effect of removing solid particle impurities.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a whirl sewage purification equipment to alleviate the relatively poor technical problem of effect of getting rid of solid particle impurity that turbid circulating water treatment facilities among the prior art exists.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a whirl sewage purification equipment, include: the spiral guide plate is arranged in the cyclone settling chamber, the outer contour of the guide plate shrinks from outside to inside along the direction from top to bottom, and a guide channel which is communicated up and down is arranged at the center of the guide plate; the side wall of the cyclone settling chamber is provided with a cyclone inlet facing the guide plate; the top wall of the cyclone settling chamber is provided with a cyclone outlet, and the upper end of the flow guide channel is communicated with the cyclone outlet, so that sewage to be treated flows out of the cyclone outlet after being guided to the flow guide channel by the flow guide plate.

In a preferred embodiment, the deflector surrounds a vertically oriented central axis of the cyclone precipitation chamber.

In a preferred embodiment, the baffle is a conical helical blade having an outer diameter that decreases from an upper end to a lower end.

In a preferred embodiment, the deflector extends in a vertical direction and is coiled in a horizontal plane along a spiral line; and the depth of the guide plate extending downwards along the vertical direction is gradually increased from outside to inside.

In a preferred embodiment, the guide plate comprises a guide top plate arranged above the guide plate, and the guide plate extends upwards to the guide top plate along the vertical direction.

In a preferred embodiment, a plurality of corrugated grooves are arranged on the plate surface of the deflector, and the corrugated grooves are distributed at intervals in the vertical direction.

In a preferred embodiment, the sewage purifying apparatus includes a water jet provided to the cyclone inlet for jetting the sewage to be purified toward the guide plate.

In a preferred embodiment, the sewage purification device comprises a flocculation reaction chamber, the flocculation reaction chamber is arranged in the flow guide channel, the top opening of the flocculation reaction chamber is communicated with the rotational flow outlet, and the bottom opening faces the bottom wall of the rotational flow sedimentation chamber.

In a preferred embodiment, the rotational flow sewage purification device comprises a hydraulic circulation clarifying chamber arranged above the rotational flow settling chamber; the bottom wall of the hydraulic circulation clarifying chamber is provided with a clarifying chamber inlet communicated with the rotational flow outlet, and the side wall of the hydraulic circulation clarifying chamber is provided with a clarifying chamber outlet; an annular sleeve which extends in the vertical direction and is provided with an upper opening and a lower opening is arranged in the hydraulic circulation clarifying chamber, a backflow gap is arranged between the lower end of the annular sleeve and the bottom wall of the hydraulic circulation clarifying chamber, and the opening at the lower end of the annular sleeve faces and covers the inlet of the clarifying chamber.

In a preferred embodiment, an expansion pipe is connected to the upper end of the annular sleeve, and the inner diameter of the expansion pipe gradually increases from bottom to top.

In a preferred embodiment, a water ejector communicated with the inlet of the clarification chamber is arranged in the hydraulic circulation clarification chamber, the upper end opening of the water ejector is opened upwards, the annular sleeve surrounds the upper end part of the water ejector, and a return channel is arranged between the inner wall of the annular sleeve and the outer wall of the water ejector, so that the sewage to be treated in the hydraulic circulation clarification chamber can flow back into the annular sleeve through the return channel to be mixed with the sewage to be treated ejected by the water ejector.

In a preferred embodiment, the inner diameter of the opening of the lower end of the annular sleeve gradually increases in a direction from top to bottom.

In a preferred embodiment, the sewage purifying apparatus includes an annular sleeve elevating mechanism for driving the annular sleeve to move up and down.

In a preferred embodiment, the method comprises the following steps: the outer contour of the annular steering plate is connected to the inner wall of the hydraulic circulation clarifying chamber; the outlet of the clarification chamber is arranged between the annular deflector and the bottom wall of the hydraulic circulation clarification chamber.

In a preferred embodiment, the sewage purification device comprises a concentration and precipitation chamber surrounding the hydraulic circulation clarification chamber, and the outlet of the clarification chamber is communicated with the concentration and precipitation chamber.

In a preferred embodiment, the outlet of the clarifying chamber comprises a plurality of water conveying through holes, and both ends of each water conveying through hole are respectively communicated with the hydraulic circulation clarifying chamber and the concentration and precipitation chamber.

In a preferred embodiment, the axes of the water transfer through holes are offset from the central axis of the hydraulic circulation clarifying chamber in the same direction.

In a preferred embodiment, the axis of each of said water delivery through holes is inclined downwards.

In a preferred embodiment, the sewage purification apparatus comprises a first sewage drain pipe located below the hydraulic circulation clarifying chamber and below the concentration settling chamber; the bottom wall of the hydraulic circulating clarifying chamber is provided with a first sewage discharge port communicated with the first sewage discharge pipe; the bottom wall of the concentration settling chamber is provided with a second sewage draining outlet communicated with the first sewage draining pipe.

In a preferred embodiment, the sewage purifying apparatus includes a water jet provided to the cyclone inlet, the water jet being for jetting the sewage to be purified toward the guide plate; the first drain pipe is communicated with an inlet of the water flow ejector.

In a preferred embodiment, the sewage purification equipment comprises an inclined tube settling chamber arranged above the concentration settling chamber, and a liquid inlet at the lower end of the inclined tube settling chamber is communicated with the top of the concentration settling chamber.

In a preferred embodiment, the sewage purification device comprises a clean water collecting area arranged above the inclined tube settling chamber, and a liquid outlet at the upper end of the inclined tube settling chamber is communicated with the clean water collecting area.

The utility model discloses a characteristics and advantage are: turbid circulating water enters the cyclone settling chamber through the cyclone inlet and flows to the guide plate; under the action of the initial speed, the gravity and the guide plate, turbid circulating water rotates around the central axis of the cyclone settling chamber in the vertical direction from top to bottom along the guide plate and flows to the lower end opening of the guide flow channel; enters the diversion channel and then flows upwards into the rotational flow outlet. In the process of rotating turbid circulating water in the cyclone settling chamber, stable cyclone can be formed, solid particle impurities in the turbid circulating water are separated from a liquid part under the centrifugal action, and the solid particle impurities can be well removed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a first embodiment of a sewage purification apparatus provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a sewage purification apparatus according to a second embodiment of the present invention;

FIG. 3 is a schematic structural view of a cyclone precipitation chamber in the sewage purification apparatus shown in FIG. 1;

FIG. 4 is a schematic structural view of a baffle in the cyclone precipitation chamber shown in FIG. 3 projected on a plane perpendicular to the axis of the cyclone outlet;

FIG. 5 is a schematic structural view of a cyclone precipitation chamber in the sewage purification apparatus shown in FIG. 2;

FIG. 6 is a schematic structural view of a baffle in the cyclone precipitation chamber shown in FIG. 5 projected on a plane perpendicular to the axis of the cyclone outlet;

FIG. 7 is a schematic structural view of another embodiment of a baffle in the cyclone precipitation chamber shown in FIG. 5;

fig. 8 is a schematic structural diagram of a hydraulic circulation clarifying chamber in a sewage purification apparatus provided by an embodiment of the present invention;

FIG. 9 is a schematic view showing the distribution of water feed through holes projected on a plane perpendicular to the central axis of the concentrating and settling chamber;

FIG. 10 is an enlarged view of a portion of FIG. 9 at A;

fig. 11 is a structural schematic diagram of a water conveying through hole in the hydraulic circulation clarifying chamber in the vertical direction, which is shown in fig. 9.

The reference numbers illustrate:

01. a cyclone settling chamber; 011. a swirl inlet; 012. a swirl outlet; 013. a sloping plate;

02. a baffle; 021. a flow guide channel;

03. a conical helical blade;

041. a helical channel; 042. a flow guide top plate; 043. a corrugated groove;

05. a water jet ejector; 051. a sludge inlet;

06. a flocculation reaction chamber; 061. an upper cylinder; 062. a lower cone;

07. a hydraulic circulating clarifying chamber; 071. an inlet of the clarification chamber; 072. an outlet of the clarification chamber; 0721. a water delivery through hole; 0722. a water delivery pipe; 073. an annular deflector plate; 074. a bottom wall inclined portion; 075. a sidewall inclined portion;

08. an annular sleeve; 081. a backflow gap; 082. an expansion tube; 083. a draft tube; 084. a conical draft tube; 085. a return channel; 085', a return channel;

09. a water ejector; 091. a water jet throat; 092. a water jet nozzle;

10. an annular sleeve lifting mechanism;

11. a concentration and precipitation chamber;

12. a first drain pipe; 121. a first annular tube; 122. a second annular tube; 123. a return branch pipe; 131. a first drain port; 132. a second sewage draining outlet;

14. an inclined tube settling chamber;

15. a clear water collecting region; 151. a water collecting cylinder; 1511. a water receiving through hole; 152. a water outlet pipe; 153. an exhaust valve;

16. a third annular tube; 161. flushing the water pipe; 171. a second sewage draining pipe; 172. emptying the pipe;

181. an access hole; 182. overhauling the observation hole; 183. a safety valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

As shown in fig. 1, fig. 2, fig. 3 and fig. 5, the rotational flow sewage purifying apparatus provided by the present invention comprises: the spiral guide plate 02 is arranged in the cyclone settling chamber, the outer contour of the guide plate 02 shrinks from outside to inside along the direction from top to bottom, and the center of the guide plate 02 is provided with a guide channel 021 which is communicated up and down; the side wall of the cyclone settling chamber 01 is provided with a cyclone inlet facing the guide plate 02; the top wall of the cyclone settling chamber 01 is provided with a cyclone outlet 012, and the upper end of the diversion channel 021 is communicated with the cyclone outlet 012, so that the sewage to be treated flows out through the cyclone outlet 012 after being guided to the diversion channel 021 by the diversion plate 02.

Turbid circulating water enters the cyclone settling chamber 01 through the cyclone inlet 011 and flows to the guide plate 02; under the action of the self initial speed, the self gravity and the guide plate 02, turbid circulating water rotates around the central axis of the cyclone settling chamber 01 in the vertical direction from top to bottom along the guide plate 02 and flows to the lower end opening of the flow guide channel 021; enters the diversion channel 021 and then flows upwards into the swirl outlet 012. In the process that the turbid circulating water rotates in the cyclone settling chamber 01, stable cyclone can be formed, solid particle impurities in the turbid circulating water are separated from a liquid part under the centrifugal action, and the solid particle impurities can be well removed.

Preferably, the cyclone inlet 011 is disposed at the top of the cyclone precipitation chamber 01, the cyclone outlet 012 is disposed at the center of the top wall of the cyclone precipitation chamber 01, and the axis of the cyclone outlet 012 coincides with the central axis of the cyclone precipitation chamber 01 in the vertical direction.

Further, the deflector 02 surrounds the central axis of the cyclone precipitation chamber 01 such that the axis of the spiral deflector 02 coincides with the central axis of the cyclone precipitation chamber 01. In order to make the operation of the apparatus more stable, the central axis of the cyclone settling chamber 01 is disposed in a vertical direction when the apparatus is installed.

In an embodiment of the present invention, as shown in fig. 1, 3 and 4, the guide plate 02 is a conical helical blade 03 whose outer diameter gradually decreases from the upper end to the lower end. Turbid circulating water ejected from the cyclone inlet 011 tends to flow towards the lower end opening of the flow guide channel 021 in the center of the cyclone settling chamber 01, and the conical spiral blade 03 plays a role in guiding the flow path of the turbid circulating water, so that the turbid circulating water forms stable cyclone in the cyclone settling chamber 01. Solid particle impurities in the turbid circulating water are separated from the liquid part under the centrifugal action, collide with the side wall of the cyclone settling chamber 01 and are adsorbed on the side wall, and gradually fall to the bottom of the cyclone settling chamber 01.

The outer diameter of the rotational flow formed under the guidance of the conical helical blade 03 is gradually reduced, and the solid particle impurities have larger self weight and are easier to separate from the liquid part under the centrifugal action.

As another embodiment, referring to fig. 2 and fig. 5 to 7, the baffle 02 extends in the vertical direction and is coiled along a spiral line in the horizontal plane, and the depth of the baffle 02 extending downward in the vertical direction gradually increases from the outside to the inside. The lower edge of the guide plate 02 forms the outer contour of the guide plate 02 and shrinks from the outside to the inside along the direction from top to bottom. Fig. 6 is a schematic view of the structure of the baffle projected on a plane perpendicular to the axis of the swirl outlet, in fig. 6 a spiral shaped channel 041 is formed in the baffle 02. Turbid circulating water enters the spiral channel 041 from the upper end, and can rotate around the central axis of the spiral channel 041 in the vertical direction of the cyclone settling chamber under the action of the guide plate 02 and move downwards to the lower end opening of the spiral channel 021 to form a cyclone; under the driving action of the swirling flow in the spiral channel 041, the turbid circulating water in the swirling flow settling chamber 01 also forms swirling flow. When the turbid circulating water is subjected to cyclone, solid particle impurities are separated from the liquid part under the centrifugal action, collide with the side wall of the guide plate 02 and the inner wall of the cyclone settling chamber 01 and gradually fall to the bottom of the cyclone settling chamber 01.

Further, as shown in fig. 7, a flow guiding top plate 042 is arranged above the flow guiding plate 02, the flow guiding plate 02 extends upwards to the flow guiding top plate 042 along the vertical direction, and the flow guiding top plate 042 seals the top of the spiral channel 041, so that turbid circulating water in the spiral channel 041 is prevented from overflowing upwards, the turbid circulating water is urged to move downwards along the spiral channel 041, and separation of solid particle impurities is facilitated.

In order to make the solid particle impurities be better adsorbed by the guide plate 02 when colliding with the guide plate 02, the inventor further optimizes the guide plate 02, as shown in fig. 7, a plurality of corrugated grooves 043 are arranged on the plate surface of the guide plate 02, the plurality of corrugated grooves 043 are distributed at intervals along the vertical direction, on one hand, the contact area of the guide plate 02 with turbid circulating water is increased by arranging the corrugated grooves 043, and on the other hand, the solid particle impurities are more convenient to stay and gather on the guide plate 02.

As shown in fig. 1 and 2, the bottom of the cyclone settling chamber 01 is tapered, and the horizontal section is gradually reduced from top to bottom, so that settled solid particle impurities move to the center of the bottom along the inner wall for discharging. A gap is arranged between the guide plate 02 and the inner wall of the cyclone settling chamber 01 so as to facilitate the settling of solid particle impurities.

In some embodiments, the cyclone sewage purifying apparatus includes a water jet 05 provided at the cyclone inlet 011, the water jet 05 being for jetting the sewage to be purified to the guide plate 02. The water flow injector 05 can make the turbid circulating water enter the cyclone settling chamber 01 at a high speed, and promote the solid particle impurities to be separated from the liquid part under the centrifugal action.

The utility model discloses an in the embodiment, this whirl sewage purification equipment includes flocculation reaction chamber 06, and water conservancy diversion passageway 021 is located to flocculation reaction chamber 06, and flocculation reaction chamber 06's open-top and whirl export 012 intercommunication, bottom opening are towards the diapire of whirl drip chamber 01. As shown in fig. 3 and 5, the flocculation reaction chamber 06 comprises an upper cylinder 061 and a lower cone 062, the upper end of the upper cylinder 061 is fixed to the top wall of the cyclone precipitation chamber 01 and is communicated with a cyclone outlet 012, the upper end of the lower cone 062 is connected to the lower end of the upper cylinder 061, and the inner diameter of the lower cone 062 is gradually increased from top to bottom; the axis of the upper cylinder 061 and the axis of the lower cone 062 both coincide with the axis of the swirl outlet 012. The upper part of the inner cavity of the upper cylinder 061 and the lower part of the inner cavity of the lower cone 062 are respectively provided with a sieve plate or a pore plate, and a plurality of hollow spherical flocculation reactors are arranged in the space between the upper sieve plate and the lower sieve plate or the pore plate; the sieve plate or the orifice plate is detachable so as to be convenient for replacing the hollow spherical flocculation reactor. The guide plate 02 is fixedly arranged on the outer wall of the upper cylinder and the outer wall of the lower cone.

The turbid circulating water in the cyclone settling chamber 01 moves downwards along the guide plate 02, enters the lower cone 062 and the upper cylinder 061 from the lower end opening of the lower cone 062, flows through the hollow spherical flocculation reactor, and undergoes flocculation reaction, so that the particle size of solid particle impurities is increased, and the purification effect in the next purification step is improved.

Example two

As shown in fig. 1, fig. 2 and fig. 8, the rotational flow sewage purification apparatus provided in this embodiment includes a hydraulic circulation clarifying chamber 07, the rotational flow settling chamber 01 and the flocculation reaction chamber 06, wherein the hydraulic circulation clarifying chamber 07 is disposed above the rotational flow settling chamber 01; the bottom wall of the hydraulic circulation clarifying chamber 07 is provided with a clarifying chamber inlet 071 communicated with the cyclone outlet 012, and the side wall of the hydraulic circulation clarifying chamber 07 is provided with a clarifying chamber outlet 072; an annular sleeve 08 which extends in the vertical direction and is opened up and down is arranged in the hydraulic circulation clarifying chamber 07, a backflow gap 081 is arranged between the lower end of the annular sleeve 08 and the bottom wall of the hydraulic circulation clarifying chamber 07, and the opening of the lower end of the annular sleeve 08 faces to and covers a clarifying chamber inlet 071.

The turbid circulating water is discharged from the cyclone outlet 012, and then enters the annular sleeve 08 in the hydraulic circulation clarifying chamber 07 through the clarifying chamber inlet 071 from bottom to top, and continues to flow upward in the annular sleeve 08. In the process of the upward flow of the turbid circulating water in the annular sleeve 08, the solid particle impurities therein flocculate and the particle size gradually increases.

Turbid circulating water flows out from an upper opening of the annular sleeve 08, collides with the top wall of the hydraulic circulation clarifying chamber 07 and turns to flow towards the outlet 072 of the clarifying chamber located at the periphery. In the process, the flocculated solid particle impurities are influenced by gravity, separated from the liquid and settled on the bottom wall of the hydraulic circulation clarifying chamber 07.

The pressure in the annular sleeve 08 is lower due to the presence of a water flow in the annular sleeve 08 that flows upwards at a higher velocity. Therefore, a part of the turbid circulating water and a part of the solid particle impurities settled on the bottom wall of the hydraulic circulation clarifying chamber 07 pass through the backflow gap 081 under the pressure difference and enter the annular sleeve 08 again. Therefore, the turbid circulating water can be circulated for multiple times for flocculation and sedimentation, and the separation of solid particle impurities in the turbid circulating water is facilitated. The solid particle impurities which enter the annular sleeve 08 again can play a role of a condensation nucleus, so that turbid circulating water is promoted to flocculate in the annular sleeve 08, and the effect of removing the solid particle impurities is further improved.

The outlet 072 of the clarifying chamber is arranged on the side wall of the hydraulic circulation clarifying chamber 07, so that the liquid part moves from the center to the periphery after turbid circulating water flows out from the upper end opening of the annular sleeve 08, and flocculated solid particle impurities fall downwards due to larger self gravity, thereby facilitating the separation of the solid particle impurities and the liquid part. Preferably, the clarifying chamber outlet 072 is disposed at the bottom of the sidewall of the hydraulic circulation clarifying chamber 07 to extend the flow path of the turbid circulating water, further improving the separation effect.

In one embodiment of the present invention, the upper end of the annular sleeve 08 is connected to an expansion tube 082, and the inner diameter of the expansion tube 082 is gradually increased along the direction from the bottom to the top. Turbid circulating water flows upwards into the expansion pipe 082 from the annular sleeve 08, and the flow speed of the turbid circulating water in the expansion pipe 082 is gradually reduced due to the gradual increase of the cross section of the expansion pipe 082, so that the flocculation of the turbid circulating water is facilitated.

Further, the upper end of the expansion tube 082 is connected with a guide cylinder 083, and the inner diameter of the guide cylinder 083 is consistent from the upper end to the lower end. Turbid circulating water diffuses outward from the center while flowing in the expansion tube 082; the turbid circulating water is collected through the guide cylinder 083, the turbid circulating water is sprayed out from the guide cylinder 083 in the vertical upward direction, the horizontal velocity of the sprayed solid particle impurities in the turbid circulating water flowing in the hydraulic circulation clarifying chamber 07 is reduced, and downward sedimentation of the solid particle impurities is facilitated.

As shown in fig. 8, in an embodiment of the present invention, a water ejector 09 is provided in the hydraulic circulation clarifying chamber 07, the water ejector 09 is communicated with the inlet 071 of the clarifying chamber, the upper opening of the water ejector 09 is opened upward, the annular sleeve 08 surrounds the upper end of the water ejector 09, and a return passage 085 is provided between the inner wall of the annular sleeve 08 and the outer wall of the water ejector 09. Specifically, the water ejector 09 comprises a water ejector nozzle 092 and a water ejector throat 091, the lower end of the water ejector nozzle 092 is fixed on the inner wall of the hydraulic circulation clarifying chamber 07 and is communicated with the inlet 071 of the clarifying chamber; the lower end of the water jet throat 091 is connected to the water jet nozzle 092 and the upper end is provided with an upward opening and the upper end of the water jet throat 091 extends into the annular sleeve 08. The turbid circulating water entering the inlet 071 of the clarifying chamber enters the water ejector throat 091 through the water ejector nozzle 092 and flows upwards into the annular sleeve 08 through the upper end opening of the water ejector throat 091; also, the inner diameter of the annular sleeve 08 is larger than the outer diameter of the water jet throat 091 such that a return passage 085 is formed between the inner wall of the annular sleeve 08 and the outer wall of the water jet throat 091. Turbid circulating water is sprayed into the annular sleeve 08 through the water ejector throat 091, so that the flow velocity of the turbid circulating water entering the annular sleeve 08 is increased, the pressure in the annular sleeve 08 is reduced, and the turbid circulating water and settled solid particle impurities thereof can flow back into the annular sleeve 08 through the backflow gap 081 and the backflow channel 085. Preferably, the inner diameter of the water ejector nozzle 092 is gradually reduced from the lower end to the upper end so that the flow velocity of the turbid circulating water in the water ejector nozzle 092 is gradually increased.

Further, a coagulant aid added pipe through which the coagulant aid flows into the water jet nozzle 092 is connected to the water jet nozzle 092, and is mixed with the turbid circulating water as it flows in the water jet nozzle 092 and the water jet throat 091.

The utility model discloses an in the embodiment, the lower extreme of ring shaped sleeve 08 is equipped with toper honeycomb duct 084, and toper honeycomb duct 084's internal diameter is followed from the top down direction crescent for the open-ended internal diameter of ring shaped sleeve 08's lower extreme is followed from the top down direction crescent, so that turbid circulating water and the solid particle impurity of deposit on hydraulic circulation clarification chamber bottom wall enter into ring shaped sleeve 08 in. When the outer diameter of the nozzle 092 of the water jet apparatus gradually decreases from the lower end to the upper end, the inner wall of the tapered draft tube 084 cooperates with the outer wall of the nozzle 092 of the water jet apparatus to form a backflow passage 085 'inclined from the periphery to the upper center, and the backflow turbid circulating water and solid particle impurities enter the annular sleeve 08 along the backflow passage 085' and can converge and collide with the turbid circulating water sprayed from the throat 091 of the water jet apparatus, thereby facilitating the mixing.

In an embodiment of the present invention, please refer to fig. 8, the rotational flow sewage purification apparatus includes a ring sleeve lifting mechanism 10, the ring sleeve lifting mechanism 10 is used to drive the ring sleeve 08 to move up and down, so as to control the distance L between the lower end surface of the ring sleeve 08 and the bottom wall of the hydraulic circulation clarifying chamber 07, and adjust the size of the backflow gap 081, thereby adjusting the backflow amount of the turbid circulating water and the solid particle impurities flowing back into the ring sleeve 08 through the backflow gap 081, and changing the ratio between the turbid circulating water flowing back and the turbid circulating water fresh water sprayed from the water jet throat 091. When the quality of the turbid circulating water entering the hydraulic circulation clarifying chamber 07 changes, or when the flow speed of the turbid circulating water entering the hydraulic circulation clarifying chamber 07 changes, the purifying effect can be adjusted by adjusting the proportion, so that the quality of the turbid circulating water discharged from the outlet 072 of the clarifying chamber is more stable.

In order to make the annular sleeve 08 move more stably relative to the hydraulic circulation clarifying chamber 07, a guide rod extending vertically downwards is fixed on the top wall of the hydraulic circulation clarifying chamber; the side wall of the annular sleeve 08 is fixed with a guide sleeve, and the guide rod is arranged in the guide sleeve in a penetrating way. The ring sleeve 08 is guided to move in the vertical direction by the guide rods. The structure of the annular sleeve elevating mechanism 10 is not limited to one, and in some embodiments, the annular sleeve elevating mechanism 10 includes a rotating shaft, a gear installed at the rotating shaft, and a rack installed at the annular sleeve 08 and arranged in a vertical direction, the gear being engaged with the rack. The rotating shaft extends to the outside of the shell of the rotational flow sewage purification device along the horizontal direction and can be manually driven by an operator; the rotating shaft and the shell of the rotational flow sewage purification equipment are in sealing fit.

Furthermore, a position sensor is arranged outside the annular sleeve lifting mechanism 10, the position of the annular sleeve 08 is monitored by the position sensor, and the proportion between the returned turbid circulating water and the turbid circulating water and fresh water sprayed from the throat 091 of the water jet device can be determined according to the position of the annular sleeve 08. Specifically, the position sensor is installed outside the annular sleeve 08 and detects the distance L between the lower end of the conical draft tube 084 and the bottom wall of the hydraulic circulation clarifying chamber 07; and (3) calculating the volume proportion value of the flow when the distance L takes different height values by utilizing finite element simulation analysis software, and determining different flow ratios corresponding to different heights.

And analyzing the flow ratio values of different distance L values by using finite element fluid software, and determining a table of the flow ratio values corresponding to the distance L values, which can be inquired, wherein different distances L correspond to different flow ratio values. In actual operation, the distance L is determined, i.e. the flow ratio can be determined. When the volume ratio value is more than 2:1, the flocculation sedimentation effect is better. Preferably, the volume ratio of the returned turbid circulating water to the new turbid circulating water sprayed from the water jet throat 091 ranges from 2:1 to 8: 1.

In one embodiment of the present invention, an annular steering plate 073 is disposed in the hydraulic circulation settling chamber 07, and the outer contour of the annular steering plate 073 is connected to the inner wall of the hydraulic circulation settling chamber 07; the clarifying chamber outlet 072 is arranged between the annular steering plate 073 and the bottom wall of the hydraulic circulation clarifying chamber 07. Turbid circulating water flows out of the annular sleeve 08 and then enters the hydraulic circulating clarifying chamber 07 to move downwards, and on one hand, flocculated solid particle impurities collide with the annular steering plate 073 and can be attached to the annular steering plate 073, so that the separation of the solid particle impurities from the turbid circulating water is facilitated; on the other hand, the outlet 072 of the clarifying chamber is positioned below the annular diversion plate 073, the annular diversion plate 073 can change the flow path of the turbid circulating water in the hydraulic circulation clarifying chamber 07, and the separation of the solid particle impurities from the liquid part is facilitated because the gravity of the solid particle impurities is larger and the influence of larger self gravity is applied to the moving process.

Further, the annular deflector 073 is inclined downwards from the outer contour to the inner contour, so that solid particle impurities which settle onto the annular deflector 073 slide down to the bottom of the hydraulic circuit settling chamber 07. In addition, solid particle impurities can also be attached to the outer wall of the conical draft tube 084, and the outer wall of the conical draft tube 084 inclines outwards and downwards to guide the solid particle impurities to slide down to the bottom wall of the hydraulic circulation clarifying chamber 07.

Further, the method is carried out. Referring to fig. 8, the bottom wall of the hydraulic circulation clarifying chamber 07 includes a bottom wall inclined part 074, the outer contour of the bottom wall inclined part 074 is connected with the side wall of the hydraulic circulation clarifying chamber 07, and the inner contour of the bottom wall inclined part 074 is close to the central axis of the hydraulic circulation clarifying chamber; the bottom wall inclined portion 074 is inclined downward from the outer contour to the inner contour. The bottom wall inclined portion 074 cooperates with the annular diverter plate 073 to form an inclined water flow path to direct the turbid circulating water into the clarification chamber outlet 072, along which the turbid circulating water flows upwardly, facilitating the separation and settling of solid particle impurities. Preferably, the annular deflector plate 073 is inclined downwardly at an angle equal to the angle at which the bottom wall inclined portion 074 is inclined downwardly.

EXAMPLE III

The rotational flow sewage purification device provided by the embodiment comprises a concentration settling chamber 11, the rotational flow settling chamber, a flocculation reaction chamber and a hydraulic circulation clarifying chamber 07, as shown in fig. 1 and fig. 2, the concentration settling chamber 11 surrounds the hydraulic circulation clarifying chamber 07, and an outlet 072 of the clarifying chamber is communicated with the concentration settling chamber 11; the bottom wall of the concentration and precipitation chamber 11 is connected with the bottom wall of the hydraulic circulation and clarification chamber 07; the concentration and precipitation chamber 11 is separated by the side wall of the hydraulic circulation clarification chamber 07. The outlet 072 of the clarifying chamber is close to the bottom of the concentration settling chamber 11, and the top of the concentration settling chamber 11 is provided with an outlet. The turbid circulating water in the hydraulic circulation clarifying chamber 07 enters the concentration settling chamber 11 through the clarifying chamber outlet 072 and moves to the outlet at the top. In the process of moving the turbid circulating water in the concentration and precipitation chamber 11, solid particle impurities are separated from the liquid part and are precipitated towards the bottom of the concentration and precipitation chamber 11.

In one embodiment of the present invention, as shown in fig. 9-11, the outlet 072 of the clarifying chamber comprises a plurality of water conveying through holes 0721 disposed on the sidewall of the hydraulic circulation clarifying chamber 07, and both ends of each water conveying through hole 0721 are respectively communicated with the hydraulic circulation clarifying chamber 07 and the concentration settling chamber 11. Through the water conveying through hole 0721, the turbid circulating water enters the concentration settling chamber 11 in a spraying manner, which is beneficial to make solid particle impurities in the turbid circulating water collide and be adsorbed on the inner wall of the concentration settling chamber 11. Specifically, the plurality of water conveying through holes 0721 are distributed into at least two layers along the axis of the hydraulic circulation clarifying chamber 07; in the same layer, the individual water feed through holes 0721 are distributed circumferentially around the central axis of the hydronic clarification chamber 07.

Further, the axes of the water conveying through holes 0721 are deviated from the central axis of the hydraulic circulation clarifying chamber 07 along the same direction, so that when the turbid circulating water is sprayed into the concentration settling chamber 11 along the axes of the water conveying through holes 0721, the turbid circulating water has a circumferential component velocity, and the turbid circulating water rotates around the central axis of the hydraulic circulation clarifying chamber 07 in the concentration settling chamber 11; and the rotation directions of the turbid circulating water sprayed from the water delivery through holes are the same. Turbid circulating water can be separated from the liquid part under the centrifugal action in the rotating process, part of solid particle impurities can be settled to the bottom of the concentrated settling chamber 11 while rotating, and part of solid particle impurities can collide and be adsorbed on the inner wall outside the concentrated settling chamber 11 and gradually fall.

In this embodiment, the central axis of the concentration settling chamber 11 coincides with the central axis of the hydraulic circulation clarifying chamber 07, please refer to fig. 1 and 8-10, fig. 9 is a schematic diagram showing the distribution of the water through holes projected on a plane perpendicular to the central axis of the concentration settling chamber, in fig. 9, the inner wall of the hydraulic circulation clarifying chamber 07 is circular, the axis of the water through hole 0721 intersects with the circular, and the included angle β between a radius passing through the intersection point and the axis of the water through hole 0721 is the inclination angle β of the water through hole 0721, preferably, the inclination angles β of the water through holes 0721 are all equal, and-55 ° ≦ β ≦ 55 °.

Further, the axes of the water conveying through holes 0721 are all inclined downwards, as shown in fig. 11, the included angle between the axes of the water conveying through holes 0721 and the horizontal plane is α, because the opening of the concentration settling chamber 11 is arranged above, turbid circulating water is sprayed out of the water conveying through holes 0721, and after entering the concentration settling chamber 11, the turbid circulating water moves downwards and then turns to move upwards, the solid particle impurities have larger gravity and cannot easily obtain upward movement kinetic energy, and collide with the bottom wall of the concentration settling chamber 11 in the process and are adsorbed, and preferably, 15 degrees is more than or equal to α degrees.

Furthermore, a water pipe 0722 is connected to the water delivery through hole 0721, the water pipe 0722 extends into the concentration settling chamber 11, the axis of the water pipe 0722 coincides with the axis of the water delivery through hole 0721, the water pipe 0722 guides the movement of turbid circulating water, and the turbid circulating water is promoted to enter the concentration settling chamber 11 along the axis of the water delivery through hole 0721.

In order to discharge solid particle impurities at the bottom of the concentration settling chamber 11 and solid particle impurities at the bottom of the hydraulic circulation settling chamber 07 conveniently, the rotational flow sewage purification device comprises a first sewage discharge pipe 12, wherein the first sewage discharge pipe 12 is positioned below the hydraulic circulation settling chamber 07 and below the concentration settling chamber 11; the bottom wall of the hydraulic circulation clarifying chamber 07 is provided with a first sewage discharge port 131 communicated with the first sewage discharge pipe 12; the bottom wall of the concentration settling chamber 11 is provided with a second sewage discharging port 132 communicated with the first sewage discharging pipe 12. Specifically, the first sewage draining pipe 12 comprises a sewage draining pipeline, a first annular pipe 121 located below the hydraulic circulation clarifying chamber 07 and a second annular pipe 122 located below the concentration settling chamber 11, the sewage draining pipeline is communicated with the first annular pipe 121 and communicated with the second annular pipe 122, the first annular pipe 121 is communicated with the first sewage draining port 131 through a sewage draining branch pipe, and the second annular pipe 122 is communicated with the second sewage draining port 132 through a sewage draining branch pipe. The sewage discharge pipeline is provided with a valve which is opened periodically to discharge solid particle impurities.

Preferably, at least 2 first sewage outlets 131 are symmetrically arranged on the hydraulic circulation clarifying chamber 07, and at least 2 second sewage outlets 132 are symmetrically arranged on the concentration settling chamber 11.

Preferably, the axis of the first sewage discharge port 131 is opened along the vertical direction, and the distance K between the axis of the first sewage discharge port 131 and the central axis of the hydraulic circulation clarifying chamber 07 is not less than 200mm, so as to ensure that solid particle impurities are gathered at the center of the bottom of the hydraulic circulation clarifying chamber 07, and to provide backflow of the solid particle impurities into the annular sleeve 08.

In some embodiments, the first drain pipe 12 communicates with an inlet of the water jet ejector 05. Specifically, the inlet end of the water jet ejector 05 is provided with a sludge inlet 051, and the first drain pipe 12 is communicated with the sludge inlet 051 through a return branch pipe 123. The solid particle impurities in the first sewage discharge pipe 12 can enter the water flow ejector 05 through the return branch pipe 123, are mixed with the turbid circulating water under the driving of the turbid circulating water in the water flow ejector 05, and are crushed under the impact of the water flow, and the particles become small. Solid particle impurities flowing back into the cyclone settling chamber 01 through the water flow ejector 05 can play a role of condensation nuclei, promote the solid particle impurities in turbid circulating water to be condensed together, facilitate separation and clarification, and further reduce the adding amount of chemical reagents such as coagulant aids and the like. Preferably, the axis of the return branch pipe 123, from the end near the first exhaust pipe 12 to the end near the water jet injector 05, is inclined in the injection direction of the water jet injector 05, so that the solid particle impurities in the first exhaust pipe 12 enter the water jet injector 05 and are well pulverized.

Example four

The rotational flow sewage purification device provided by the embodiment comprises an inclined tube settling chamber 14, the rotational flow settling chamber 01, a flocculation reaction chamber 06, a concentration settling chamber 11 and a hydraulic circulation clarifying chamber 07, as shown in fig. 1 and fig. 2, the inclined tube settling chamber 14 is arranged above the concentration settling chamber 11, a plurality of inclined tubes are obliquely arranged in the inclined tube settling chamber 14 side by side, the lower end opening of each inclined tube is communicated with the lower end liquid inlet of the inclined tube settling chamber 14, and the upper end opening of each inclined tube is communicated with the upper end liquid outlet of the inclined tube settling chamber 14. The liquid inlet at the lower end of the inclined tube settling chamber 14 is communicated with the top of the concentration settling chamber 11.

The cross-section of the tube perpendicular to the tube axis may be circular or elliptical. Preferably, the cross section of the inclined tube perpendicular to the axis of the inclined tube is elliptical, which is beneficial to increasing the contact area of the tube wall and is more beneficial to trapping particles.

The inclined tube can adopt a hollow tube; the inclined tube bundle is used as a filler inclined tube. The top of the concentration settling chamber 11 is welded with an inclined tube bracket which supports the inclined tube.

In some embodiments, the chute is formed by a plurality of segments joined by mortises. The lower part of the inclined tube bracket is connected with a plurality of guide grid plates which are vertical plate-shaped, are positioned at the lower part of the inclined tube settling chamber 14 and are arranged on the side wall of the concentration settling chamber 11; a plurality of flow guiding grid plates are arranged along a horizontal circumference. The pipe chute bracket can be supported to the water conservancy diversion grid tray, and the water conservancy diversion grid tray is located the upper portion of concentrated deposit room 11 simultaneously, can carry out the water conservancy diversion to the rivers in the concentrated deposit room 11 for the regional stable updraft that forms in the concentrated deposit room 11 upper portion eliminates the whirl effect, improves the homogeneity of rivers in the pipe chute, is favorable to the rivers in the pipe chute to remain stable even.

The turbid circulating water enters the inclined tube from the concentration and precipitation chamber 11 upwards, the solid particle impurities are further separated and precipitated, and the precipitated solid particle impurities fall into the concentration and precipitation chamber 11 along the inclined tube. In order to ensure that the inclined tube settling chamber 14 has a better settling effect, the included angle between the axis of each inclined tube and the horizontal line is 55-65 degrees; preferably, the axis of each tube is at an angle of 60 ° to the horizontal.

The utility model discloses an in an embodiment, the lateral wall of hydraulic circulation clarification chamber 07 includes lateral wall rake 075, lateral wall rake 075 is located concentrated deposit room 11, and supreme leanin is followed to lateral wall rake 075 down, so that the cross sectional area of the horizontal direction of concentrated deposit room 11 is along following the direction crescent up from down, thereby reduce the velocity of flow of turbid circulating water in concentrated deposit room 11, be convenient for solid particle impurity subsides, and make turbid circulating water enter into the pipe chute with lower speed, can improve the time that turbid circulating water dwells in the pipe chute and the utilization ratio of pipe chute, reinforcing precipitation effect.

The inclined tube settling chamber 14 is annular and surrounds the hydraulic circulation clarifying chamber 07, and the inclined tube settling chamber 14 and the hydraulic circulation clarifying chamber 07 are separated by the side wall of the hydraulic circulation clarifying chamber 07, so that the space is saved, and the vertical size of the sewage purification equipment is reduced.

EXAMPLE five

The utility model provides a whirl sewage purification equipment, including clear water collecting region 15 to and foretell pipe chute drip chamber 14, concentrated drip chamber 11, hydrologic cycle clarification chamber 07, whirl drip chamber 01 and flocculation reaction chamber 06, clear water collecting region 15 locates the top of pipe chute drip chamber 14, and the upper end liquid outlet and the clear water collecting region 15 intercommunication of pipe chute drip chamber 14. The turbid circulating water flows upwards to the clear water collecting region 15 through the inclined pipe and is stored in the clear water collecting region 15 so as to be discharged outwards for circulation.

The top of the clear water collecting area 15 is provided with a water collecting cylinder 151, and the side wall of the water collecting cylinder 151 is provided with a water collecting through hole 1511 communicated with the clear water collecting area 15; the water receiving cylinder 151 is connected with a water outlet pipe 152, turbid circulating water in the clear water collecting area 15 enters the water receiving cylinder 151 through the water receiving through hole 1511 after reaching the height of the water receiving through hole 1511, and is directly sent to a pressure type filter or a cooling tower by utilizing the excess water pressure through the water outlet pipe 152. Preferably, the water collecting cylinder 151 is of a funnel-shaped structure, and the plurality of water collecting through holes 1511 are distributed on the tapered side wall of the funnel-shaped structure to increase the uniformity of the water flow. In some embodiments, the water collecting cylinder 151 is connected with an air outlet valve 153, and the air pressure in the water collecting cylinder 151 is reduced through the air outlet valve 153, so that turbid circulating water can enter the water collecting cylinder 151.

The utility model provides a whirl sewage purification equipment has integrated whirl precipitation chamber 01, flocculation reaction chamber 06, hydrologic cycle clarification chamber 07, concentrated precipitation chamber 11, pipe chute precipitation chamber 14 and clear water collecting region 15, has the characteristics that the structure is compact and area is little. Turbid circulating water enters the cyclone settling chamber 01 after being pressurized by the booster pump station, and flows to a subsequent purification treatment chamber and a clean water collecting region by utilizing a self residual pressure water head, so that the pressurizing times and the power consumption are reduced. The turbid circulating water is firstly separated from larger solid particle impurities in the cyclone settling chamber 01, and then passes through the flocculation reaction chamber 06, so that the particle size of the residual solid particle impurities in the turbid circulating water is increased, and the separation is facilitated; the turbid circulating water discharged from the flocculation reaction chamber 06 sequentially enters the hydraulic circulation clarifying chamber 07 and the concentration settling chamber 11 to further separate solid particle impurities, and then enters the inclined tube settling chamber 14 to separate and remove smaller solid particle impurities. By adopting the step-by-step separation treatment process, solid particle impurities with larger particle sizes are removed firstly, and then solid particle impurities with smaller particle sizes are removed, so that the stability of the purification effect can be improved, and the water quality of purified turbid circulating water is ensured.

The specific structure and operation principle of each purification chamber are described above, and the inventor further improves the operation of the equipment for the convenience of maintenance and the guarantee of safe and stable operation of the equipment.

In an embodiment of the present invention, a second drainage pipe 171 is disposed at the bottom of the cyclone settling chamber 01. The second drain pipe 171 is provided with a valve through which deposited sludge can be periodically discharged. Preferably, as shown in fig. 3, the bottom of the inner cavity of the cyclone settling chamber 01 is provided with a sloping plate 013 for bearing sludge, and the sludge inlet of the second sewage discharge pipe 171 is arranged above the sloping plate 013. In some embodiments, the bottom of the cyclone settling chamber 01 is further provided with an emptying pipe 172, and the emptying pipe 172 is provided with an emptying valve.

In one embodiment of the present invention, a third annular pipe 16 is disposed in the cyclone settling chamber 01, and a plurality of water outlets are disposed on the pipe wall of the third annular pipe 16; the third annular pipe 16 is connected with an external water supply pipeline through a flushing water pipe 161, and water entering the third annular pipe 16 is sprayed into the cyclone precipitation chamber 01 through a water outlet on the pipe wall to realize flushing.

The utility model discloses an in the embodiment, be equipped with the access hole 181 respectively at the lateral wall of whirl drip chamber 01, the lateral wall top of hydraulic circulation clarification chamber 07 and the roof of clear water collecting region 15, be equipped with maintenance observation hole 182 at the lateral wall of concentrated drip chamber 11, the roof of clear water collecting region 15 is equipped with the relief valve 183 with clear water collecting region 15 intercommunication.

The above description is only for the embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims

1. A rotational flow sewage purifying apparatus, comprising: the spiral guide plate is arranged in the cyclone settling chamber, the outer contour of the guide plate shrinks from outside to inside along the direction from top to bottom, and a guide channel which is communicated up and down is arranged at the center of the guide plate;

the side wall of the cyclone settling chamber is provided with a cyclone inlet facing the guide plate; the top wall of the cyclone settling chamber is provided with a cyclone outlet, and the upper end of the flow guide channel is communicated with the cyclone outlet, so that sewage to be treated flows out of the cyclone outlet after being guided to the flow guide channel by the flow guide plate.

2. The rotational flow sewage purification apparatus of claim 1 wherein the deflector surrounds a vertically oriented central axis of the rotational flow settling chamber.

3. The rotational flow sewage purification apparatus according to claim 1, wherein the guide plate is a tapered spiral blade having an outer diameter gradually decreasing from an upper end to a lower end.

4. The rotational flow sewage purification apparatus according to claim 1, wherein the guide plate extends in a vertical direction and is wound along a spiral line in a horizontal plane; and the depth of the guide plate extending downwards along the vertical direction is gradually increased from outside to inside.

5. The rotational flow sewage purification apparatus according to claim 4, comprising a guide roof plate disposed above the guide plate, wherein the guide plate extends upward to the guide roof plate in a vertical direction.

6. The rotational flow sewage purification apparatus according to claim 4, wherein a plurality of corrugated troughs are arranged on the plate surface of the guide plate, and the plurality of corrugated troughs are distributed at intervals in the vertical direction.

7. The rotational flow sewage purifying apparatus of claim 1 comprising a water flow injector provided at the rotational flow inlet for injecting sewage to be purified toward the guide plate.

8. The rotational flow sewage purification apparatus according to claim 1, comprising a flocculation reaction chamber, wherein the flocculation reaction chamber is disposed in the flow guide channel, a top opening of the flocculation reaction chamber is communicated with the rotational flow outlet, and a bottom opening of the flocculation reaction chamber faces a bottom wall of the rotational flow settling chamber.

9. The rotational flow sewage purification apparatus according to claim 8, comprising a hydraulic circulation clarifying chamber provided above the rotational flow settling chamber; the bottom wall of the hydraulic circulation clarifying chamber is provided with a clarifying chamber inlet communicated with the rotational flow outlet, and the side wall of the hydraulic circulation clarifying chamber is provided with a clarifying chamber outlet;

an annular sleeve which extends in the vertical direction and is provided with an upper opening and a lower opening is arranged in the hydraulic circulation clarifying chamber, a backflow gap is arranged between the lower end of the annular sleeve and the bottom wall of the hydraulic circulation clarifying chamber, and the opening at the lower end of the annular sleeve faces and covers the inlet of the clarifying chamber.

10. The rotational flow sewage purification apparatus according to claim 9, wherein an expansion pipe is connected to an upper end of the annular sleeve, and an inner diameter of the expansion pipe is gradually increased in a direction from bottom to top.

11. The rotational flow sewage purification apparatus according to claim 9, wherein a water ejector communicated with the inlet of the clarification chamber is arranged in the hydraulic circulation clarification chamber, the upper end opening of the water ejector is opened upwards, the annular sleeve surrounds the upper end part of the water ejector, and a return channel is arranged between the inner wall of the annular sleeve and the outer wall of the water ejector, so that the sewage to be treated in the hydraulic circulation clarification chamber can flow back into the annular sleeve through the return channel to be mixed with the sewage to be treated ejected by the water ejector.

12. The rotational flow sewage purifying apparatus according to claim 9 wherein an inner diameter of an opening of a lower end of the annular sleeve is gradually increased in a direction from top to bottom.

13. The rotational flow sewage purifying apparatus of claim 9 comprising an annular sleeve elevating mechanism for driving the annular sleeve to move up and down.

14. The rotational flow sewage purification apparatus according to claim 9, comprising: the outer contour of the annular steering plate is connected to the inner wall of the hydraulic circulation clarifying chamber; the outlet of the clarification chamber is arranged between the annular deflector and the bottom wall of the hydraulic circulation clarification chamber.

15. The rotational flow sewage purification apparatus of claim 9 comprising a concentration settling chamber surrounding the hydraulic circulation settling chamber, the settling chamber outlet communicating with the concentration settling chamber.

16. The rotational flow sewage purification apparatus according to claim 15 wherein said clarification chamber outlet comprises a plurality of water transfer through holes, each of which has both ends respectively communicating with said hydraulic circulation clarification chamber and said concentration sedimentation chamber.

17. The rotational flow sewage purification apparatus of claim 16 wherein the axis of each of the water transfer through holes is offset from the central axis of the hydronic clarification chamber in the same direction.

18. The rotational flow sewage purification apparatus of claim 17 wherein the axis of each of the water delivery through holes is inclined downward.

19. The rotational flow sewage purification apparatus according to claim 15, comprising a first sewage drain pipe located below the hydraulic circulation clarifying chamber and below the concentration settling chamber;

the bottom wall of the hydraulic circulating clarifying chamber is provided with a first sewage discharge port communicated with the first sewage discharge pipe;

the bottom wall of the concentration settling chamber is provided with a second sewage draining outlet communicated with the first sewage draining pipe.

20. The rotational flow sewage purifying apparatus of claim 19 comprising a water flow injector provided at the rotational flow inlet for injecting sewage to be purified toward the flow guide plate;

the first drain pipe is communicated with an inlet of the water flow ejector.

21. The rotational flow sewage purification apparatus according to claim 15, comprising an inclined tube settling chamber disposed above the concentration settling chamber, wherein a lower liquid inlet of the inclined tube settling chamber is communicated with a top of the concentration settling chamber.

22. The rotational flow sewage purification apparatus of claim 21 comprising a clean water collection area disposed above the inclined tube settling chamber, wherein the upper outlet of the inclined tube settling chamber is in communication with the clean water collection area.