CN212854758U

CN212854758U - Settling tank

Info

Publication number: CN212854758U
Application number: CN202021023623.8U
Authority: CN
Inventors: 姜雨来; 武胜利; 王东; 董志军; 王斌; 吕鹏
Original assignee: Inner Mongolia Huineng Coal Chemical Industry Co ltd
Current assignee: Inner Mongolia Huineng Coal Chemical Industry Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-04-02
Anticipated expiration: 2030-06-05

Abstract

The utility model discloses a settling tank, it includes cell body, center well, actuating mechanism, drive shaft and changes the harrow, and the center well includes the barrel, has seted up the overflow mouth at the middle part of barrel, and the outside cover of barrel below the overflow mouth is equipped with the sleeve of loudspeaker form, forms between the outer wall of closing plate and telescopic inner wall and barrel and joins in marriage the thick liquid room, the inlet tube with join in marriage thick liquid room intercommunication, the bottom of closing plate set up a plurality ofly and join in marriage the delivery port that the thick liquid room communicates. The advantages are that: the central well comprises a cylinder, a sleeve, a closing plate and the like, slurry entering the central well descends and then ascends, and the descending and the ascending are respectively carried out in different structures, so that the disturbance is reduced, and the reaction effect and the separation efficiency of a flocculating agent and the slurry in the central well are improved; the slurry overflowed from the central cylinder is settled again through the inclined pipe assembly, solid particles in clear water can be separated, the settling effect of the settling tank is further enhanced, the equipment failure rate is reduced, and normal production is guaranteed.

Description

Settling tank

The technical field is as follows:

the utility model relates to a water treatment technical field, specifically speaking relate to a settling tank.

Background art:

the settling tank is a gravity settling device for solid-liquid separation, and is used for increasing the concentration of suspension and simultaneously obtaining clear liquid. The settling tank generally comprises a tank body, a center well, a driving mechanism, a driving shaft and a rotary rake, wherein the side wall of the upper part of the tank body is communicated with a water outlet pipe, the bottom of the tank body is communicated with a sludge discharge port, the center well is fixed in the middle of the tank body, the driving mechanism is arranged below the center well, the driving shaft is coaxially arranged inside the center well, the top end of the driving shaft is fixedly connected with an output shaft of the driving mechanism, the bottom end of the driving shaft extends to the bottom of the tank body, and the rotary rake is fixed at the bottom end of the driving. The slurry enters the central well through the water inlet pipe, muddy water is discharged through the sludge discharge port after sinking to the bottom, and supernatant liquid is discharged through the water outlet pipe in an overflowing manner. The feeding materials directly enter from the top and are directly discharged downwards through the material guide cylinder, so that the disturbance of the reaction liquid in the tank is increased; in addition, the discharged clear liquid contains a small amount of solid particles, which may cause the blockage of the water outlet pipe, finally resulting in the failure of the settling tank to work continuously and high failure rate.

The utility model has the following contents:

an object of the utility model is to provide a settling tank that separation efficiency is high.

The utility model discloses by following technical scheme implement: a settling tank comprises a tank body, a central well, a driving mechanism, a driving shaft and a rotary rake, wherein a water outlet pipe is communicated with the side wall of the upper part of the tank body, a sludge discharge port is communicated with the bottom of the tank body, the central well is fixed in the middle of the tank body, the driving mechanism is arranged below the central well, the driving shaft is coaxially arranged inside the central well, the top end of the driving shaft is in transmission connection with an output shaft of the driving mechanism, the bottom end of the driving shaft extends to the bottom of the tank body, and the rotary rake is fixed at the bottom end of the driving shaft; the central well comprises a barrel, an overflow port is formed in the middle of the barrel, a horn-shaped sleeve is sleeved outside the barrel below the overflow port, a small-caliber section of the sleeve is fixed with the outer wall of the barrel, a large-caliber end of the sleeve is covered on the periphery of the rotary rake, and a channel is formed between the large-caliber end of the sleeve and the bottom of the trough body; an annular closing plate is connected between the bottom end of the cylinder and the inner wall of the sleeve, a slurry mixing chamber is formed between the closing plate and the inner wall of the sleeve and between the closing plate and the outer wall of the cylinder, a water inlet pipe is communicated with the slurry mixing chamber, and a plurality of water outlets communicated with the slurry mixing chamber are formed in the bottom end of the closing plate.

Furthermore, an annular partition plate is fixed inside the bottom end of the cylinder body, the driving shaft comprises a solid shaft and a hollow shaft which is rotatably sleeved outside the solid shaft, and the driving mechanism comprises a first motor and a second motor which are respectively in transmission connection with the top end of the solid shaft and the top end of the hollow shaft; the rotary harrow is fixed at the bottom end of the solid shaft; and a stirring lifting impeller is fixed outside the hollow shaft in the annular partition plate.

Furthermore, an inclined pipe assembly is fixed inside the groove body between the overflow port and the water outlet pipe.

Furthermore, a manhole communicated with the slurry distribution chamber is formed in the side wall of the cylinder.

Further, the inlet end of the water inlet pipe penetrates through the groove body and is arranged outside the groove body, the outlet end of the water inlet pipe is connected with the outlet end of the communicating pipe through a flange, and the inlet end of the communicating pipe is communicated with the outlet of upstream equipment through a flange.

The utility model has the advantages that: the central well comprises a cylinder, a sleeve, a closing plate and the like, slurry entering the central well descends and then ascends, and the descending and the ascending are respectively carried out in different structures, so that the disturbance is reduced, and the reaction effect and the separation efficiency of a flocculating agent and the slurry in the central well are improved; the slurry overflowed from the central cylinder is settled again through the inclined pipe assembly, solid particles in clear water can be separated, the settling effect of the settling tank is further enhanced, the equipment failure rate is reduced, and normal production is guaranteed.

Description of the drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

The device comprises a tank body 1, a central well 2, a cylinder body 2.1, an overflow port 2.2, a sleeve 2.3, a sealing plate 2.4, a slurry preparation chamber 2.5, a water outlet 2.6, an annular partition plate 2.7, a manhole 2.8, a driving mechanism 3, a first motor 3.1, a second motor 3.2, a driving shaft 4, a solid shaft 4.1, a hollow shaft 4.2, a rotary rake 5, a water outlet pipe 6, a sludge discharge port 7, a channel 8, a water inlet pipe 9, a stirring lifting impeller 10, an inclined pipe assembly 11 and a communicating pipe 12.

The specific implementation mode is as follows:

in the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, a settling tank comprises a tank body 1, a central well 2, a driving mechanism 3, a driving shaft 4 and a rotary harrow 5, wherein the central well 2 is fixed in the middle of the tank body 1, the central well 2 comprises a cylinder body 2.1, an overflow port 2.2 is formed in the middle of the cylinder body 2.1, a horn-shaped sleeve 2.3 is sleeved outside the cylinder body 2.1 below the overflow port 2.2, a small-caliber section of the sleeve 2.3 is fixed with the outer wall of the cylinder body 2.1, a large-caliber end cover of the sleeve 2.3 is arranged on the periphery of the rotary harrow 5, and a channel 8 is formed between a large-caliber end of the sleeve 2.3 and the bottom of the tank body 1; an annular closing plate 2.4 is connected between the bottom end of the cylinder body 2.1 and the inner wall of the sleeve 2.3, a slurry distribution chamber 2.5 is formed between the closing plate 2.4 and the inner wall of the sleeve 2.3 and the outer wall of the cylinder body 2.1, a manhole 2.8 communicated with the slurry distribution chamber 2.5 is arranged on the side wall of the cylinder body 2.1, and through the arrangement of the manhole 2.8, a person can conveniently clean the inside of the slurry distribution chamber 2.5; the water inlet pipe 9 is communicated with the slurry preparation chamber 2.5, the inlet end of the water inlet pipe 9 penetrates through the tank body 1 and is arranged outside the tank body 1, the outlet end of the water inlet pipe 9 is connected with the outlet end of a communicating pipe 12 through a flange, the inlet end of the communicating pipe 12 is communicated with the outlet of upstream equipment through a flange, and the communicating pipe 12 is connected between the settling tank and the upstream equipment through a flange, so that the assembly and disassembly are convenient, and the replacement and the cleaning are convenient; the bottom end of the closing plate 2.4 is provided with a plurality of water outlets 2.6 communicated with the pulp distribution chamber 2.5, and an annular partition plate 2.7 is fixed inside the bottom end of the cylinder body 2.1; the annular partition plate 2.7 and the tank body 1 below the sleeve 2.3 form a first reaction area, the inside of the cylinder body 2.1 between the annular partition plate 2.7 and the overflow port 2.2 forms a second reaction area, a separation area is formed between the outer wall of the sleeve 2.3 and the inner wall of the tank body 1, slurry sent by a water inlet pipe 9 enters the slurry distribution chamber 2.5 and then enters the first reaction area through a water outlet 2.6, added flocculating agents fully react with the slurry under the stirring of the rotary rake 5, large floccules directly settle downwards under the action of gravity, the rest liquid flows upwards and enters the second reaction area for continuous reaction, then enters the separation area through the overflow port 2.2, the floccules settle downwards along the outer wall of the sleeve 2.3 under the action of gravity and reach the bottom of the tank body 1 through a channel 8, and clear water flows upwards; the inclined pipe assembly 11 is fixed in the groove body 1 between the overflow port 2.2 and the water outlet pipe 6, and in the process that the clarified liquid overflows upwards through the inclined pipe assembly 11, solid particles carried in the clear water can further subside downwards along the inclined pipe assembly 11 and then return to the separation area again for separation, so that the sedimentation effect of the sedimentation tank is further improved, and the water outlet pipe 6 is prevented from being blocked. The side wall of the upper part of the tank body 1 is communicated with a water outlet pipe 6, clear water overflowed through the inclined pipe assembly 11 is discharged through the water outlet pipe 6, the bottom of the tank body 1 is communicated with a sludge discharge port 7, and finally muddy water settled at the bottom of the tank body 1 is discharged through the sludge discharge port 7.

The driving mechanism 3 is erected below the central well 2, the driving mechanism 3 and the driving shaft 4 are erected at the top of the tank body through a support, the driving shaft 4 is coaxially arranged inside the central well 2, the top end of the driving shaft 4 is in transmission connection with an output shaft of the driving mechanism 3, the bottom end of the driving shaft 4 extends to the bottom of the tank body 1, and a rotary rake 5 is fixed at the bottom end of the driving shaft 4; in the embodiment, the driving shaft 4 comprises a solid shaft 4.1 and a hollow shaft 4.2 which is rotatably sleeved outside the solid shaft 4.1, and the driving mechanism 3 comprises a first motor 3.1 and a second motor 3.2 which are respectively in transmission connection with the top end of the solid shaft 4.1 and the top end of the hollow shaft 4.2; the rotary harrow 5 is fixed at the bottom end of the solid shaft 4.1, the output shaft of the first motor 3.1 is directly coaxially fixed with the top end of the solid shaft 4.1, the first motor 3.1 drives the rotary harrow 5 to rotate through the solid shaft 4.1, the stirring lifting impeller 10 is fixed outside the hollow shaft 4.2 in the annular partition plate 2.7, the stirring lifting impeller 10 is an axial-flow impeller, bevel gears which are mutually meshed are respectively fixed at the output shaft of the second motor 3.2 and the top end of the hollow shaft 4.2, the second motor 3.2 drives the stirring lifting impeller 10 to rotate through the hollow shaft 4.2, slurry above the first reaction zone is upwards lifted to the inside of the second reaction zone, and the circulation of liquid is accelerated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A settling tank comprises a tank body, a central well, a driving mechanism, a driving shaft and a rotary rake, wherein a water outlet pipe is communicated with the side wall of the upper part of the tank body, a sludge discharge port is communicated with the bottom of the tank body, the central well is fixed in the middle of the tank body, the driving mechanism is arranged below the central well, the driving shaft is coaxially arranged inside the central well, the top end of the driving shaft is in transmission connection with an output shaft of the driving mechanism, the bottom end of the driving shaft extends to the bottom of the tank body, and the rotary rake is fixed at the bottom end of the driving shaft; the central well is characterized by comprising a barrel, wherein an overflow port is formed in the middle of the barrel, a horn-shaped sleeve is sleeved outside the barrel below the overflow port, a small-caliber section of the sleeve is fixed with the outer wall of the barrel, a large-caliber end of the sleeve is covered on the periphery of the rotary rake, and a channel is formed between the large-caliber end of the sleeve and the bottom of the trough body; an annular closing plate is connected between the bottom end of the cylinder and the inner wall of the sleeve, a slurry mixing chamber is formed between the closing plate and the inner wall of the sleeve and between the closing plate and the outer wall of the cylinder, a water inlet pipe is communicated with the slurry mixing chamber, and a plurality of water outlets communicated with the slurry mixing chamber are formed in the bottom end of the closing plate.

2. The settling tank as claimed in claim 1, wherein an annular partition is fixed inside the bottom end of the barrel, the driving shaft comprises a solid shaft and a hollow shaft rotatably sleeved outside the solid shaft, and the driving mechanism comprises a first motor and a second motor respectively in transmission connection with the top end of the solid shaft and the top end of the hollow shaft; the rotary harrow is fixed at the bottom end of the solid shaft; and a stirring lifting impeller is fixed outside the hollow shaft in the annular partition plate.

3. A settler according to claim 1 or claim 2, wherein an inclined tube assembly is secured within the tank between the overflow outlet and the outlet pipe.

4. The settler according to claim 1 or 2, wherein a manhole is formed in a side wall of the cylindrical body to communicate with the slurry distribution chamber.

5. A settler according to claim 3, characterized in that a manhole is provided in the side wall of said shell in communication with said slurry distribution chamber.

6. The settling tank as claimed in claim 1, 2 or 5, wherein the inlet end of the water inlet pipe passes through the tank body and is arranged outside the tank body, the outlet end of the water inlet pipe is connected with the outlet end of a communicating pipe through a flange, and the inlet end of the communicating pipe is communicated with the outlet of upstream equipment through a flange.

7. The settling tank as claimed in claim 3, wherein the inlet end of the water inlet pipe passes through the tank body and is arranged outside the tank body, the outlet end of the water inlet pipe is connected with the outlet end of a communicating pipe through a flange, and the inlet end of the communicating pipe is communicated with the outlet of an upstream device through a flange.

8. The settling tank as claimed in claim 4, wherein the inlet end of the water inlet pipe passes through the tank body and is arranged outside the tank body, the outlet end of the water inlet pipe is connected with the outlet end of a communicating pipe through a flange, and the inlet end of the communicating pipe is communicated with the outlet of an upstream device through a flange.