CN112791459A

CN112791459A - Grit chamber

Info

Publication number: CN112791459A
Application number: CN202110222579.6A
Authority: CN
Inventors: 张平亮
Original assignee: Wuxi Professional College of Science and Technology
Current assignee: Wuxi Professional College of Science and Technology
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-05-14

Abstract

The invention provides a grit chamber which can be used for removing silt in sewage, has high treatment efficiency and can clean and discharge the silt. It includes the cell body, is located respectively the inflow port and the outlet of cell body both sides, the cell body includes upper portion cylinder casing, middle part inclined cone face body and lower part sand hopper, install hollow rotating shaft in the middle of the cell body, hollow rotating shaft is connected with the motor, hollow rotating shaft still installs the flap agitator, still be equipped with the aeration pipe in the cylinder casing of upper portion, the aeration pipe centers on hollow rotating shaft sets up and its one end stretches out the cell body is connected with gas delivery device, still be connected with oblique baffle on the inside wall of middle part inclined cone face body, oblique baffle is greater than one and centers on the flap agitator evenly sets up, still be equipped with the sand lift pipe in the lower part sand hopper for the discharge sand grain.

Description

Grit chamber

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a grit chamber.

Background

The sewage can be mixed with the silt inevitably in the migration, flow and collection processes, and the operation of subsequent treatment equipment can be influenced if the silt in the sewage is not settled and separated in advance. The sewage treatment plant needs to install a sand setting facility, namely a sand setting tank, for removing inorganic particles with high density, such as sand, coal slag and the like from sewage so as to prevent the impurities from influencing the normal operation of subsequent treatment structures.

Disclosure of Invention

Aiming at the problem that the efficiency of removing the silt in the sewage is low in the traditional mode, the invention provides the grit chamber which can be used for removing the silt in the sewage, has high treatment efficiency and can clean and discharge the silt.

The technical scheme is as follows: grit chamber, it includes the cell body, is located respectively the inflow port and the outlet of cell body both sides, its characterized in that: the cell body includes upper portion cylinder casing, middle part inclined cone face body and lower part sand hopper, install hollow rotating shaft in the middle of the cell body, hollow rotating shaft is connected with the motor, the hinge agitator is still installed to hollow rotating shaft, still be equipped with the aeration pipe in the upper portion cylinder casing, the aeration pipe centers on hollow rotating shaft sets up and its one end stretches out the cell body and is connected with gas delivery device, still be connected with oblique baffle on the inside wall of middle part inclined cone face body, oblique baffle is greater than one and centers on the hinge agitator evenly sets up, still be equipped with the sand lift pipe in the lower part sand hopper for discharge sand grain.

It is further characterized in that:

the inflow port is connected with the water falling weir, a transverse down-the-hole is arranged in the water falling weir, a water inlet baffle is arranged in front of the transverse down-the-hole, and the water falling weir is communicated with one side of the upper cylindrical shell;

a circular cover plate is arranged at the top of the upper cylindrical shell, a gear box is mounted on the circular cover plate, and the gear box is connected with the motor;

the outlet is connected with the open channel, the bottom of the open channel is provided with a sand storage hopper, the bottom of the sand storage hopper is connected with a sand discharge pipe, and the open channel is communicated with one side of the upper cylindrical shell.

The invention has the beneficial effects that: sewage gets into the cell body from the inflow inlet, stir through the flap agitator, because the centrifugal force that sand grain mass received is great, can be got rid of to the cell wall and fall into and collect in the lower part sand hopper, simultaneously under the effect of oblique baffle and influent stream, can promote the separation of organic matter and sand grain, simultaneously under the effect of aeration pipe, the sand grain rubs each other and bears the shearing force of aeration, adnexed organic pollutant can be got rid of on the sand grain, thereby can clean exhaust sand grain.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view taken along line B-B of FIG. 1;

fig. 3 is a schematic sectional view taken along line a-a of fig. 1.

Detailed Description

The grit chamber as shown in fig. 1, 2 and 3 comprises a chamber body 1, an inflow port 2 and a water outlet 3 which are respectively positioned at two sides of the chamber body, the chamber body 1 comprises an upper cylindrical shell 1-1, a middle inclined conical surface 1-2 and a lower sand hopper 1-3, the inflow port 2 is connected with a water falling weir 4, a transverse down-hole is arranged in the water falling weir 4, a water inlet baffle 5 is arranged in front of the transverse down-hole, the water falling weir 4 is communicated with one side of the upper cylindrical shell 1-1 of the chamber body 1, the water outlet 3 is connected with an open channel 6, the bottom of the open channel 6 is inclined and extends into two sand storage hoppers 7, the bottom of the sand storage hoppers 7 is connected with a sand discharge pipe for discharging a small amount of residual sand grains, the open channel 6 is communicated with the other side of the upper cylindrical shell 1-1, a hollow rotating shaft 1-4 is arranged in the middle of the chamber body 1, a circular cover, the circular cover plate 1-5 is provided with a gear box 1-6, the gear box 1-6 is connected with a motor 1-7, the motor 1-7 drives a hollow rotating shaft 1-4 to rotate, the hollow rotating shaft 1-4 is also provided with a flap stirrer 1-8 with three blades, an aeration pipe 1-9 is also arranged in the upper cylindrical shell 1-1, the aeration pipe 1-9 is arranged around the hollow rotating shaft 1-4, the aeration pipe 1-9 is connected with an air pipe 1-10, the air pipe 1-10 is supplied with air by a compressed air conveying pipe, the inner side wall of the middle inclined conical surface body 1-2 is also connected with inclined baffles 1-11, the number of the inclined baffles 1-11 is 8 and is uniformly arranged around the flap stirrer 1-8, a sand lifting pipe 1-12 is also arranged in the lower sand hopper 1-3, the sand lifting pipe 1-12 is positioned in the hollow rotating shaft 1-4, the sand lifting pipe 1-12 is internally provided with a sand discharge pipe 1-13, and the sand discharge pipe 1-13 is internally provided with a compressed air conveying pipe 1-14 for discharging sand grains.

The sewage enters from the inflow port 2 at one side of the water falling weir 4, and sand possibly deposited at the bottom of the channel slides downwards into a sand settling area of the upper cylindrical shell 1-1 through the blocking of the water inlet baffle 5 and the transverse down-hole, is transferred to the bottom of the pool, and enhances the wall attachment effect. The middle of a cylindrical shell 1-1 at the upper part of the bell-shaped cylindrical pool is provided with a hollow rotating shaft 1-4, and the hollow rotating shaft 1-4 is driven to rotate by a motor through a gear transmission case 1-6, so that a flap stirrer 1-8 with adjustable speed on the hollow rotating shaft 1-4 is driven to rotate together, and the water flow in the pool is kept to circulate. Six inclined baffles 1-11 are arranged on the middle inclined conical surface body 1-2, so that a flap stirrer 1-8, the six inclined baffles 1-11 and the water inlet flow are combined together, and the rotary three-fold blades enable sand grains to flow spirally, thereby promoting the separation of organic matters and the sand grains; meanwhile, aeration pipes 1-9 are arranged on the periphery of the hollow rotating shaft 1-4, and air is supplied to the aeration pipes 1-9 by a compressed air conveying pipe for aeration so as to remove organic pollutants attached to sand grains; because of different centrifugal forces, sand with larger relative density is thrown to the pool wall and sinks into the sand hopper under the action of gravity, and the compressed air conveying pipe is adopted to lead the sand in the lower sand hopper 1-3 to pass through the sand lifting pipe 1-12 and then to be discharged by the sand discharge pipe 1-13; and the lighter organic matters are separated from the sand in the middle part of the upper cylindrical shell 1-1, and the organic matters are carried out to one side of the open channel 6 along with the effluent cyclone and finally discharged out of the pool through the water outlet 3.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. Grit chamber, it includes the cell body, is located respectively the inflow port and the outlet of cell body both sides, its characterized in that: the cell body includes upper portion cylinder casing, middle part inclined cone face body and lower part sand hopper, install hollow rotating shaft in the middle of the cell body, hollow rotating shaft is connected with the motor, the hinge agitator is still installed to hollow rotating shaft, still be equipped with the aeration pipe in the upper portion cylinder casing, the aeration pipe centers on hollow rotating shaft sets up and its one end stretches out the cell body and is connected with gas delivery device, still be connected with oblique baffle on the inside wall of middle part inclined cone face body, oblique baffle is greater than one and centers on the hinge agitator evenly sets up, still be equipped with the sand lift pipe in the lower part sand hopper for discharge sand grain.

2. The grit chamber of claim 1, wherein: the inflow port is connected with the water falling weir, a transverse down-the-hole is formed in the water falling weir, a water inlet baffle is installed in front of the transverse down-the-hole, and the water falling weir is communicated with one side of the upper cylindrical shell.

3. The grit chamber of claim 1, wherein: the top of the upper cylindrical shell is provided with a circular cover plate, a gear box is mounted on the circular cover plate, and the gear box is connected with the motor.

4. The grit chamber of claim 1, wherein: the outlet is connected with the open channel, the bottom of the open channel is provided with a sand storage hopper, the bottom of the sand storage hopper is connected with a sand discharge pipe, and the open channel is communicated with one side of the upper cylindrical shell.