CN220265376U - Cyclone sand setting tank - Google Patents

Abstract

The utility model relates to a cyclone sand setting tank which comprises a sand setting tank body, a feeding pipe, a water discharging pipe, a sand discharging pipe, a stirring part and a water inlet pipe, wherein the feeding pipe is communicated with the top of the sand setting tank body, the water discharging pipe is communicated with the middle of the sand setting tank body, the sand discharging pipe is communicated with the bottom of the sand setting tank body, and the stirring part is positioned in an inner cavity of the sand setting tank body. The inlet tube includes middle part wash pipe and bottom wash pipe, and the delivery port of middle part wash pipe is located the middle part of grit chamber body, and the delivery port of bottom wash pipe is located the bottom of grit chamber body, still is equipped with anti-clogging portion on the stirring portion, and anti-clogging portion is the bottom fixed connection of round platform shape structure and anti-clogging portion's top and stirring portion, and the delivery port of bottom wash pipe is located the below of preventing clogging portion. The sand basin's in this scheme simple structure through preventing jam portion and bottom wash pipe reducible grit stop the probability at the vortex middle part for the grit moves along with the rotation of vortex rivers, prevents the grit caking.

Description

Cyclone sand setting tank

Technical Field

The utility model relates to the technical field of grit chambers, in particular to a rotational flow grit chamber.

Background

The rotational flow sand setting tank is a sand setting device which controls the flow state and the flow speed of water flow by using mechanical force, accelerates the precipitation of sand grains and leads organic matters to be taken away along with the water flow. The slurry plate in the cyclone sand setting tank rotates to enable water flow in the sand setting tank to form vortex, sand grains and organic matters in sewage are separated while moving along with the water flow, the sand grains with high density are lowered to the bottom of the sand setting tank to be discharged, and the organic matters with low density are taken out of the tank along with the water flow.

However, since sand is piled up at the bottom of the grit chamber and is difficult to move along with vortex water flow, the sand is easy to agglomerate after being piled up for a long time, so that the sand is difficult to be discharged out of the grit chamber, sand blocks are easy to block a sand discharge pipe, further, the sand discharge of the grit chamber is difficult, and vicious circle is caused until the grit chamber is completely blocked. The blocked grit chamber needs to consume a great deal of manpower and material resources to clean the grit chamber. In order to solve the sand and stone caking in the grit chamber, a plurality of technical means are adopted, such as the existing high-efficient anti-blocking cyclone grit chamber device, including cavity setting and bottom open-ended grit chamber body, controlling means, roots blower, sand-water separator and multistage high-pressure centrifugal pump, the top fixedly connected with apron of grit chamber body, drive arrangement is installed at the top of apron, drive arrangement's drive shaft runs through the apron and is connected with screw blade. The anti-blocking rotational flow sand setting device utilizes the multistage high-pressure centrifugal pump to rapidly convey water to the sealing device in the sand setting tank body, utilizes high-pressure water flow to disperse sand grains which are precipitated on the surface of the sealing device and are hardened into blocks, and can lift the positions of the sand grains at the same time, so that the sand grains in the sand setting tank body are conveyed into the sand-water separator by the sand lifting assembly. The driving motor arranged at the inner bottom of the grit chamber body rotates to drive the lifting plate to move up and down, the lifting plate moves up and down to drive the center of the elastic plate to move up and down, sand grains which are piled up on the surface of the sealing device and are hardened into blocks are impacted, the sand blocks which are hardened into blocks are scattered, the positions of the sand grains can be lifted, so that the sand grains in the grit chamber body can be conveyed into the sand-water separator by the sand lifting assembly, in addition, the sand lifting assembly can be matched with the multistage high-pressure centrifugal pump, the sand lifting effect is improved, and the phenomena of unsmooth sand discharge, blockage and the like are avoided.

However, because the grit and the weight of sewage are higher in the grit chamber that the grit capacity is great, and the grit is great to the pressure of elastic plate in the grit chamber, is difficult to realize the elastic plate up-and-down motion and strikes the grit piece, and grit chamber bottom structure complicacy, and the trouble is difficult to refurbish.

Disclosure of Invention

The utility model provides a cyclone sand setting tank for solving the problems that in the prior art, the pressure of sand in the sand setting tank to an elastic plate is large, the elastic plate is difficult to move up and down to impact a sand stone, the bottom structure of the sand setting tank is complex, faults occur, and the sand setting tank is difficult to repair. This scheme sets up inlet tube and anti-clogging portion in the bottom of grit chamber, prevents that the grit from concentrating in the center of grit chamber, makes the grit can prevent the grit caking along with rivers swirling motion, and the whirl grit chamber structure in this scheme is simpler simultaneously.

The technical scheme adopted by the utility model is as follows: the utility model provides a whirl grit chamber, includes grit chamber body, inlet pipe, drain pipe, sand discharge pipe, stirring portion and inlet tube, and the top of inlet pipe intercommunication grit chamber body, the middle part of drain pipe intercommunication grit chamber body, the bottom of sand discharge pipe intercommunication grit chamber body, stirring position are located the inner chamber of grit chamber body, and stirring portion is connected with the motor and is used for driving stirring portion rotation. The inlet tube includes middle part wash pipe and bottom wash pipe, and the delivery port of middle part wash pipe is located the middle part of grit chamber body, and the delivery port of bottom wash pipe is located the bottom of grit chamber body, still is equipped with anti-clogging portion on the stirring portion, and anti-clogging portion is the top of round platform shape and anti-clogging portion and the bottom fixed connection of stirring portion, and the delivery port of bottom wash pipe is located the below of anti-clogging portion.

When the cyclone sand basin starts to work, sewage wrapped with sand and stone is conveyed to the inner cavity of the sand basin body through the feeding pipe. After sewage is injected into the inner cavity of the grit chamber body, the motor drives the stirring part to start stirring, so that water flow in the inner cavity of the grit chamber body forms vortex, sand grains and organic matters in the sewage are separated along with the rotation of the water flow vortex, the sand grains fall to the bottom of the grit chamber, and the organic matters float in the water flow vortex. After the water flow in the grit chamber body forms vortex, sand in the center of the vortex is difficult to move along with the water flow, and is easy to agglomerate after long-time accumulation. The anti-blocking part is of a round table-shaped structure and is positioned below the stirring part, so that sand and stones can be dispersed to the periphery of the center of the grit chamber by the anti-blocking part after descending from the center of the grit chamber, and the sand and stones are prevented from accumulating at the center of a water flow vortex and finally agglomerating. The water inlet pipe comprises a middle flushing pipe and a bottom flushing pipe, after the water flow in the sand setting Chi Ben body forms a vortex, the middle flushing pipe injects water into the sand setting tank from the middle part of the sand setting tank body, and organic matters positioned in the middle part of the sand setting tank are further dispersed, so that the organic matters are uniformly distributed in the water; the delivery port of bottom flushing pipe is located prevents blocking up the portion under, and the grit that is located the water flow vortex center is directly impacted to the rivers of bottom flushing pipe, will fall into the grit at vortex center and dash in the water flow vortex, makes it move along with the water flow vortex, further prevents the grit caking of bottom. Finally, the sand discharging pipe is opened, sand and stone at the bottom are discharged from the sand setting tank along with water flow, the water discharging pipe is opened, and sewage carries organic matters to be discharged from the water discharging pipe.

The sand basin's in this scheme simple structure through preventing jam portion and bottom wash pipe reducible grit stop the probability at the vortex middle part for the grit moves along with the rotation of vortex rivers, prevents the grit caking. The vortex water flow is flushed through the middle flushing pipe, so that organic matters float in the water flow uniformly, and when sewage is discharged from the grit chamber, the organic matters can be discharged along with the sewage.

Preferably, the bottom angle of the trapezoid cross section of the anti-blocking part is 60-75 degrees, and the bottom edge of the trapezoid is 0.5-0.7 times of the radius of the bottom of the grit chamber body. The distance between the bottom of the anti-blocking part and the bottom of the inner cavity of the grit chamber is 10cm to 20cm. The bottom angle of the trapezoid cross section of the anti-blocking part is 60-75 degrees, and when the angle is overlarge, sand and stone slide to the bottom of the grit chamber from the side wall of the anti-blocking part and then are closer to the center of the grit chamber. The anti-blocking part has higher height and larger installation space; when the angle is too small, the sand is easy to stay on the anti-blocking part, and the impact force of the sand falling on the anti-blocking part to the anti-blocking part is larger, so that the anti-blocking part is easy to fall off from the stirring part. The bottom edge of the trapezoid cross section is 0.5-0.7 times of the radius of the bottom of the grit chamber, sand and stone fall to a position close to the center of the grit chamber due to the fact that the length of the bottom edge is too small, sand and stone enter the vortex center more easily, and too much sand and stone are accumulated on the anti-blocking portion easily due to the fact that the length of the bottom edge of the triangle is too large. Too little distance between the bottom of the anti-blocking part and the bottom of the inner cavity of the grit chamber can also enable too much sand and stone to be accumulated on the anti-blocking part, and too big distance between the bottom of the anti-blocking part and the bottom of the inner cavity of the grit chamber can easily enable sand and stone to enter the vortex center.

Preferably, the method is used. The stirring portion comprises a stirring shaft and stirring paddles fixedly connected with the stirring shaft, the stirring shaft is connected with a motor, the paddles comprise an upper stirring paddle, a middle stirring paddle and a lower stirring paddle, the upper stirring paddle, the middle stirring paddle and the lower stirring paddle are respectively located on the upper portion, the middle portion and the lower portion of the stirring shaft, the paddles of the upper stirring paddle and the middle stirring paddle are plate-shaped, and the paddles of the lower stirring paddle are rod-shaped. The stirring blade comprises an upper stirring blade, a middle stirring blade and a lower stirring blade, the upper stirring blade, the middle stirring blade and the lower stirring blade are respectively positioned at the upper part, the middle part and the lower part of the inner cavity of the grit chamber, and a vortex can be formed in the grit chamber faster when the stirring part rotates. The upper stirring blade and the middle stirring blade are plate-shaped, and as the middle part and the upper part of the grit chamber are mainly water flows, the blades play a role in stirring the water flows to form vortexes, so that the blades are plate-shaped. The grit is mainly deposited in the bottom of grit chamber, and lower stirring paddle's paddle is the shaft-like, and shaft-like paddle reduces the resistance that the paddle received when inserting in the grit and rotating.

Preferably, the lower stirring blade comprises a main rod and a supporting rod, the main rod is fixedly connected with the stirring shaft, the axis of the main rod is perpendicular to the axis of the stirring shaft, the supporting rod is fixedly connected with the main rod, the axis of the supporting rod is parallel to the axis of the stirring shaft, and one end, far away from the main rod, of the supporting rod is located below the main rod. The main rod and the branch rod are round rods. The support rod in the lower stirring blade faces downwards, so that the tail end of the support rod is more convenient to approach the bottom of the grit chamber. Because the bottom of the grit chamber is in an inverted cone shape, the length of each support rod is different from each other, but the vertical distance between each support rod and the grit chamber body in the vertical direction is the same. The support rod can be deeper and more comprehensively stir the sand and stone at the bottom of the grit chamber. The main rod and the branch are round rods, so that the round rods are easier to disperse resistance during rotation, and the resistance is smaller.

Preferably, the edge of the paddle of the middle stirring part is attached to the side wall of the inner cavity of the grit chamber body. The area of the middle blade is larger than that of the upper rectangle, and the middle blade is 10-30 degrees with the vertical direction. The edge of the middle stirring blade is attached to the side wall of the inner cavity of the grit chamber body, so that the middle stirring blade has the function of pulling and scraping the accumulated sand of the slope of the chamber body on the basis of water flow of the stirring chamber body. When forming the rivers vortex, well stirring paddle is better to the stirring effect of water, and well stirring paddle area is greater than last stirring paddle area, can form the rivers vortex more soon after making stirring portion rotatory. The included angle between the middle stirring blade and the vertical direction is a, and the range of a is 10 degrees to 30 degrees, so that the effect of the middle stirring blade on stirring the water flow of the tank body is better.

Preferably, the water outlet of the water inlet pipe is conical, and the caliber of the water outlet is half of the diameter of the water inlet pipe. The water inlet pipe clings to the side wall of the grit chamber body. The water outlet of the water inlet pipe is conical, and the pressure of water flow in the water inlet pipe after being sprayed out from the water inlet pipe is further increased. The water inlet pipe clings to the side wall of the grit chamber body, so that water flow is prevented from impacting the water inlet pipe after water flow vortex is formed.

Compared with the prior art, the utility model has the beneficial effects that: the sand basin's in this scheme simple structure through preventing jam portion and bottom wash pipe reducible grit stop the probability at the vortex middle part for the grit moves along with the rotation of vortex rivers, prevents the grit caking. The middle flushing pipe impacts the water flow vortex, so that organic matters are uniformly distributed in the water flow, and when sewage is discharged from the grit chamber, the organic matters can be discharged along with the sewage. The bottom flushing pipe can impact the sand and stone located in the center of the water flow vortex to the water flow vortex, so that the sand and stone moves along with the water flow vortex, and the sand and stone at the bottom are further prevented from caking. Stirring portion includes stirring paddle, well stirring paddle and stirring paddle down, can be faster when stirring portion rotates forms the vortex in the grit chamber and stirring portion is better to the stirring effect of grit chamber bottom grit.

Drawings

FIG. 1 is a schematic diagram of a grit chamber structure of a cyclone grit chamber of the present utility model;

FIG. 2 is a schematic view of the construction of a grit chamber of example 3 in a cyclone grit chamber of the present utility model;

FIG. 3 is a schematic view showing the structure of a stirring section of example 3 in a cyclone grit chamber of the present utility model;

FIG. 4 is an enlarged view of the portion A of FIG. 3 of a cyclone grit chamber of the present utility model.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for better illustration of the present embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are orientations or positional relationships indicated by terms "upper", "lower", "left", "right", "long", "short", etc., based on the orientations or positional relationships shown in the drawings, this is merely for convenience in describing the present utility model and simplifying the description, and is not an indication or suggestion that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present patent, and that it is possible for those of ordinary skill in the art to understand the specific meaning of the terms described above according to specific circumstances.

The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:

example 1

An embodiment 1 of a cyclone sand basin is shown in fig. 1, and comprises a sand basin body 1, a feed pipe 6, a drain pipe 7, a sand discharge pipe 2, a stirring part and a water inlet pipe 4, wherein the feed pipe 6 is communicated with the top of the sand basin body 1, the drain pipe 7 is communicated with the middle part of the sand basin body 1, the sand discharge pipe 2 is communicated with the bottom of the sand basin body 1, and the stirring part of the inner cavity of the sand basin body 1 is connected with a motor 8 for driving the stirring part to rotate. The inlet tube 4 includes middle part wash pipe 401 and bottom wash pipe 402, and the delivery port of middle part wash pipe 401 is located the middle part of grit chamber body 1, and the delivery port of bottom wash pipe 402 is located the bottom of grit chamber body 1, still is equipped with anti-clogging portion 5 on the stirring portion, and anti-clogging portion 5 is round platform shape structure and anti-clogging portion 5's top and the bottom fixed connection of stirring portion, and the delivery port of bottom wash pipe 402 is located the below of anti-clogging portion 5.

The working principle or working process of the embodiment: when the cyclone grit chamber starts to work, the feeding pipe 6 conveys the sewage wrapped with sand and stone to the inner cavity of the grit chamber body 1, the stirring part of the motor 8 starts stirring, so that water flow in the inner cavity of the grit chamber body 1 forms a vortex, sand grains in the sewage are separated from organic matters, the sand grains are positioned at the bottom layer of the grit chamber, and the organic matters float in the vortex. The anti-blocking part 5 is positioned below the stirring part, and sand and stone can be dispersed by the anti-blocking part 5 after descending from the center of the grit chamber. The water inlet pipe 4 comprises a middle flushing pipe 401 and a bottom flushing pipe 402, and after the water flow in the grit chamber body 1 forms a vortex, the middle flushing pipe 401 injects water into the grit chamber from the middle part of the grit chamber body 1 to further flush out organic matters positioned in the middle part of the grit chamber; the water outlet of the bottom flushing pipe 402 is located right below the anti-blocking part 5, and the water flow of the bottom flushing pipe 402 directly impacts the sand and stones located in the center of the water flow vortex, and the sand and stones falling into the center of the vortex are impacted to the edge of the vortex, so that the sand and stones move together with the water flow vortex. Finally, the sand at the bottom is discharged from the brush discharging pipe 2 along with water flow, and the sewage with organic matters is discharged from the water discharging pipe 7.

The beneficial effects of this embodiment are: the anti-blocking part 5 is of a round table structure and is positioned below the stirring part, so that sand and stones can be dispersed by the anti-blocking part 5 after descending from the center of the grit chamber, and the sand and stones are prevented from accumulating in the center of the grit chamber and finally agglomerating. The water inlet pipe 4 comprises a middle flushing pipe 401 and a bottom flushing pipe 402, after the water flow in the grit chamber body 1 forms a vortex, the middle flushing pipe 401 injects water into the grit chamber from the middle part of the grit chamber body 1, and organic matters positioned in the middle part of the grit chamber are further dispersed, so that the organic matters are uniformly distributed in the water; the water outlet of the bottom flushing pipe 402 is located under the anti-blocking part 5, and the water flow of the bottom flushing pipe 402 directly impacts the sand and stone located in the center of the water flow vortex, and the sand and stone falling into the center of the vortex are impacted to the edge of the vortex, so that the sand and stone move together with the water flow vortex, and the sand and stone at the bottom are further prevented from caking. The sand basin's in this scheme simple structure through prevent blockking up portion 5 and bottom wash pipe 402 reducible grit stop the probability at the vortex middle part for the grit moves along with the rotation of vortex rivers, prevents the grit caking. The water flow is impacted by the middle flushing pipe 401, so that organic matters are uniformly distributed in the water flow, and when sewage is discharged from the grit chamber, the organic matters can be discharged together with the sewage.

Example 2

An embodiment 2 of a cyclone sand basin is shown in fig. 1, and comprises a sand basin body 1, a feed pipe 6, a drain pipe 7, a sand discharge pipe 2, a stirring part and a water inlet pipe 4, wherein the feed pipe 6 is communicated with the top of the sand basin body 1, the drain pipe 7 is communicated with the middle part of the sand basin body 1, the sand discharge pipe 2 is communicated with the bottom of the sand basin body 1, and the stirring part of the inner cavity of the sand basin body 1 is connected with a motor 8 for driving the stirring part to rotate. The inlet tube 4 includes middle part wash pipe 401 and bottom wash pipe 402, and the delivery port of middle part wash pipe 401 is located the middle part of grit chamber body 1, and the delivery port of bottom wash pipe 402 is located the bottom of grit chamber body 1, still is equipped with anti-clogging portion 5 on the stirring portion, and anti-clogging portion 5 is round platform shape structure and anti-clogging portion 5's top and the bottom fixed connection of stirring portion, and the delivery port of bottom wash pipe 402 is located the below of anti-clogging portion 5.

Specifically, the base angle of the trapezoid cross section of the anti-blocking part 5 is 60 degrees, and the bottom edge of the trapezoid is 0.5 times of the radius of the bottom of the grit chamber. The distance between the bottom of the anti-blocking part 5 and the bottom of the inner cavity of the grit chamber is 10cm.

The beneficial effects of this embodiment are: the volume of the anti-blocking part 5 is moderate, so that the excessive volume of the inner cavity of the grit chamber is avoided. The trapezoid cross section base angle of the anti-blocking part 5 is moderate, the base angle is prevented from being too small by 1, sand and stone are enabled to stay on the anti-blocking part 5 or impact the anti-blocking part 5 when the sand and stone fall down, and the sand and stone is prevented from sliding from the side wall of the anti-blocking part 5 to the bottom of the grit chamber and then being closer to the center of the grit chamber when the base angle is too large. The bottom edge length of the trapezoid cross section is the same. Too little distance between the bottom of the anti-blocking part 5 and the bottom of the inner cavity of the grit chamber can also cause too much sand and stone to be accumulated on the anti-blocking part 5, and too big distance between the bottom of the anti-blocking part 5 and the bottom of the inner cavity of the grit chamber can easily cause sand and stone to enter the vortex center.

Example 3

As shown in fig. 1-4, an embodiment 2 of a cyclone sand basin comprises a sand basin body 1, a feed pipe 6, a drain pipe 7, a sand discharge pipe 2, a stirring part and a water inlet pipe 4, wherein the feed pipe 6 is communicated with the top of the sand basin body 1, the drain pipe 7 is communicated with the middle part of the sand basin body 1, the sand discharge pipe 2 is communicated with the bottom of the sand basin body 1, and the stirring part of an inner cavity of the sand basin body 1 is connected with a motor 8 for driving the stirring part to rotate. The inlet tube 4 includes middle part wash pipe 401 and bottom wash pipe 402, and the delivery port of middle part wash pipe 401 is located the middle part of grit chamber body 1, and the delivery port of bottom wash pipe 402 is located the bottom of grit chamber body 1, still is equipped with anti-clogging portion 5 on the stirring portion, and anti-clogging portion 5 is round platform shape structure and anti-clogging portion 5's top and the bottom fixed connection of stirring portion, and the delivery port of bottom wash pipe 402 is located the below of anti-clogging portion 5.

Specifically, the bottom angle of the trapezoid cross section of the anti-blocking part 5 is 75 degrees, and the bottom edge of the trapezoid is 0.7 times of the radius of the bottom of the grit chamber. The distance between the bottom of the anti-blocking part 5 and the bottom of the inner cavity of the grit chamber is 20cm.

Specifically, the stirring portion includes a stirring shaft 9 and a stirring blade 3 fixedly connected with the stirring shaft 9, the stirring shaft 9 is connected with the motor 8, the stirring blade 3 includes an upper stirring blade 301, a middle stirring blade 302 and a lower stirring blade 303, the upper stirring blade 301, the middle stirring blade 302 and the lower stirring blade 303 are respectively located at the upper portion, the middle portion and the lower portion of the stirring shaft 9, the blades of the upper stirring blade 301 and the middle stirring blade 302 are plate-shaped, and the blades of the lower stirring blade 303 are rod-shaped.

Specifically, the lower stirring paddle 303 includes a main rod 331 and a supporting rod 332, the main rod 331 is fixedly connected with the stirring shaft 9, the axis of the main rod 331 is perpendicular to the axis of the stirring shaft 9, the supporting rod 332 is fixedly connected with the main rod 331, the axis of the supporting rod 332 is parallel to the axis of the stirring shaft 9, and one end of the supporting rod 332 away from the main rod 331 is located below the main rod 331. The main rod 331 and the support rod 332 are both round rods. Each of the struts 332 in the vertical direction is the same as the vertical distance of the grit chamber body 1.

Specifically, the edge of the middle stirring blade 302 is attached to the side wall of the inner cavity of the grit chamber body 1, and a notch is formed in the middle stirring blade 302 and is used for being attached to the side wall of the grit Chi Zhuixing. The area of the middle stirring blade 302 is larger than that of the upper stirring blade 301 and the included angle a between the middle stirring blade 302 and the vertical direction is a, and a is 20 degrees.

Specifically, the water outlet of the water inlet pipe 4 is conical, and the caliber of the water outlet is half of the diameter of the water inlet pipe 4. The water inlet pipe 4 is closely attached to the side wall of the grit chamber body 1.

The beneficial effects of this embodiment are: the stirring part comprises an upper stirring blade 301, a middle stirring blade 302 and a lower stirring blade 303, wherein the upper stirring blade 301, the middle stirring blade 302 and the lower stirring blade 303 are respectively positioned at the upper part, the middle part and the lower part of the inner cavity of the grit chamber body 1, and a vortex can be formed in the grit chamber faster when the stirring part rotates. The upper stirring blade 301 and the middle stirring blade 302 are plate-shaped, and as the middle part and the upper part of the grit chamber are mainly water flows, the blades play a role in stirring the water flows to form vortexes, so that the blades are plate-shaped. The grit mainly deposits in the bottom of grit chamber, and the paddle of lower stirring paddle 303 is the shaft-like, and the resistance that the paddle received is reduced when the paddle of shaft-like rotates in inserting the grit, and the resistance that the round bar received is less.

The direction of the supporting rods 332 is the same as the vertical distance between each supporting rod 332 and the grit chamber body 1 in the vertical downward direction, so that the supporting rods can be deeper and more comprehensively stir the sand and the stone at the bottom of the grit chamber. The blade edge of the middle stirring blade 302 is attached to the side wall of the inner cavity of the grit chamber body 1, so that the blade of the middle stirring blade 302 has the function of pulling and scraping the accumulated sand of the slope of the chamber body on the basis of the water flow of the stirring chamber body. When the water vortex is formed, the stirring effect of the middle stirring blade 302 on the water body is better, and the blade of the middle stirring blade 302 is larger than the blade of the upper stirring blade 301, so that the stirring part 1 can form the water vortex faster after rotating.

The water outlet of the water inlet pipe 4 is conical, and the pressure of the water flow in the water inlet pipe 4 after being sprayed out from the water inlet pipe 4 is further increased. The water inlet pipe 4 clings to the side wall of the grit chamber body 1, so that water flow is prevented from impacting the water inlet pipe 4 after water flow vortex is formed.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The utility model provides a whirl grit chamber, includes grit chamber body (1), inlet pipe (6), drain pipe (7), sand discharge pipe (2), stirring portion and inlet tube (4), the inlet pipe intercommunication grit chamber body (1) top, the drain pipe intercommunication grit chamber body (1) middle part, sand discharge pipe (2) intercommunication the bottom of grit chamber body (1), stirring portion is located the inner chamber of grit chamber body (1), stirring portion is connected with motor (8) and is used for the drive stirring portion rotates, a serial communication port, inlet tube (4) are including middle part flushing pipe (401) and bottom flushing pipe (402), the delivery port of middle part flushing pipe (401) is located the middle part of grit chamber body (1), the delivery port of bottom flushing pipe (402) is located the bottom of grit chamber body (1), still be equipped with anti-blocking portion (5) on the stirring portion, anti-blocking portion (5) are just the top of blocking portion (5) with the bottom of stirring portion is located the bottom flushing pipe (402) of blocking portion (5).

2. A cyclone grit chamber as claimed in claim 1, wherein the trapezoid cross section of the anti-clogging portion (5) has a base angle of 60 ° -75 °, and the trapezoid base is 0.5-0.7 times the radius of the bottom of the grit chamber body (1).

3. A cyclone grit chamber according to claim 2, characterized in that the distance between the bottom of the anti-clogging part (5) and the bottom of the inner chamber of the grit chamber body (1) is 10-20cm.

4. A cyclone grit chamber as claimed in claim 1, wherein the stirring part comprises a stirring shaft (9) and stirring blades (3) fixedly connected with the stirring shaft (9), the stirring shaft (9) is connected with the motor (8), the stirring blades (3) comprise an upper stirring blade (301), a middle stirring blade (302) and a lower stirring blade (303), the upper stirring blade (301), the middle stirring blade (302) and the lower stirring blade (303) are respectively positioned at the upper part, the middle part and the lower part of the stirring shaft (9), the blades of the upper stirring blade (301) and the middle stirring blade (302) are plate-shaped, and the blades of the lower stirring blade (303) are rod-shaped.

5. The cyclone sand basin according to claim 4, wherein the lower stirring blade (303) comprises a main rod (331) and a supporting rod (332), the main rod (331) is fixedly connected with the stirring shaft (9), the axis of the main rod (331) is perpendicular to the axis of the stirring shaft (9), the supporting rod (332) is fixedly connected with the main rod (331), the axis of the supporting rod (332) is parallel to the axis of the stirring shaft (9), and one end of the supporting rod (332) away from the main rod (331) is located below the main rod (331).

6. A cyclone grit chamber as claimed in claim 5, wherein said main shaft (331) and said support shaft (332) are both round bars.

7. The cyclone grit chamber of claim 4, wherein the edges of the middle stirring blades (302) are attached to the side walls of the inner chamber of the grit chamber body (1).

8. A cyclone grit chamber as claimed in claim 4, wherein the area of said middle stirring blade (302) is larger than the area of said upper stirring blade (301) and said middle stirring blade (302) is at an angle of 10 ° -30 ° to the vertical.

9. A cyclone grit chamber according to claim 1, wherein the outlet of the inlet pipe (4) is tapered and has a diameter of half the diameter of the inlet pipe (4).

10. A cyclone grit chamber according to claim 9, wherein the inlet pipe (4) is in close proximity to the side wall of the grit chamber body (1).