CN210631723U

CN210631723U - Blowdown structure at bottom of settling tank

Info

Publication number: CN210631723U
Application number: CN201920945628.7U
Authority: CN
Inventors: 沈巧星; 侯卡立; 孙流强; 刘金贵
Original assignee: Xinxiang Yongjin Chemical Co ltd; Xinxiang Zhongxin Chemical Co ltd
Current assignee: Xinxiang Yongjin Chemical Co ltd; Xinxiang Zhongxin Chemical Co ltd
Priority date: 2019-06-22
Filing date: 2019-06-22
Publication date: 2020-05-29
Anticipated expiration: 2029-06-22

Abstract

The utility model provides a settling tank bottom blowdown structure, includes settling tank, cylindricality cavity, waste fitting discharging, the inside lower extreme of settling tank is equipped with the harrow material harrow, and the settling tank is the cylindricality, and the settling tank bottom is equipped with the cylindricality cavity, and the cylindricality cavity sets up with the settling tank is concentric, be equipped with stirring vane in the cylindricality cavity, stirring vane and harrow material harrow coaxial coupling setting, cylindricality cavity lateral wall is equipped with waste fitting discharging, the last clear stifled device that is connected with of waste fitting discharging. This structure has avoided the situation that the drain blockked up the drain by the bold solid waste through setting up the drain at the lateral wall. The blockage clearing device is added on the existing sewage discharge device, the automatic cleaning function of the sewage discharge device can be realized by opening and closing different valves, and manpower and material resources are saved.

Description

Blowdown structure at bottom of settling tank

Technical Field

The utility model relates to an equipment cleaning field, concretely relates to settling tank bottom waste fitting discharging.

Background

In the coal gasification production process, the sedimentation separation of ash is an important link. The separation quality directly influences the operation stability of the process system. The sedimentation effect of the original sedimentation system is good, but the ash slag settled in the separation system blocks a sewage pipeline, so that the ash slag cannot be well conveyed out, the solid content in the slurry conveyed out by the underflow pump is low, the filter cake is thin, and the operation rate and the productivity of equipment are influenced. Further, the sediment of the ash at the bottom of the settling tank is gradually thickened, the current of the raking machine is increased, the phenomenon that the water quality at the upper part of the settling tank is rolled by the coal slime at the bottom layer occurs, and the stability of a subsequent system is influenced. Meanwhile, if a sewage pipeline at the bottom of the settling tank is blocked by ash, the cleaning is difficult, and the machine needs to be stopped for treatment, so that the working efficiency is greatly influenced.

Disclosure of Invention

In order to solve the problem existing in the background technology, the utility model provides a subsider bottom blowdown structure.

The utility model provides a subsider bottom blowdown structure, includes subsider, cylindricality cavity, waste fitting discharging, the inside lower extreme of subsider is equipped with harrow rake, its characterized in that: the sedimentation tank is cylindric, and the sedimentation tank bottom is equipped with the cylindricality cavity, and the cylindricality cavity sets up with the sedimentation tank is concentric, be equipped with stirring vane in the cylindricality cavity, stirring vane and harrow material coaxial coupling setting, cylindricality cavity lateral wall is equipped with waste fitting discharging, the last clear stifled device of being connected with of waste fitting discharging.

Further, the sewage discharge device comprises an underflow pump and a slag discharge port; the underflow pump is connected to the side wall of one side of the cylindrical cavity through a pipeline, and the slag discharge port is connected to the side wall of the other side of the cylindrical cavity through a pipeline; an inlet valve of the underflow pump is arranged between the underflow pump and the cylindrical cavity, and a slag discharge valve is arranged on the slag discharge port and the cylindrical cavity.

Further, clear stifled device includes grey water pump, through pipe connection in first valve between underflow pump and the underflow pump inlet valve, first valve passes through pipe connection in grey water pump, and through pipe connection in second valve between underflow pump inlet valve and cylindricality cavity, the second valve passes through pipe connection in grey water pump, and through pipe connection in third valve between cylindricality cavity and row's sediment valve, the third valve passes through pipe connection in grey water pump, and row's sediment valve and row's sediment mouthful are through pipe connection in fourth valve between, the fourth valve passes through pipe connection in grey water pump.

Furthermore, a hand hole is formed in the side wall of the cylindrical cavity, and a blocking plate is arranged on the hand hole.

Further, the stirring blades are two-blade upturning type gradient fan blades.

The beneficial effect of this structure is as follows:

this structure has avoided the situation that the drain blockked up the drain by the bold solid waste through setting up the drain at the lateral wall. The blockage clearing device is added on the existing sewage discharge device, the automatic cleaning function of the sewage discharge device can be realized by opening and closing different valves, and manpower and material resources are saved.

Drawings

Fig. 1 is a schematic structural diagram of the structure.

The device comprises a settling tank 1, a cylindrical cavity 2, a sewage discharge device 3, a raking rake 4, a stirring blade 5, a blockage removing device 6, an underflow pump 7, a slag discharge port 8, an underflow pump inlet valve 9, a slag discharge valve 10, a first valve 11, a second valve 12, a third valve 13, a fourth valve 14, an ash water pump 15, a hand hole 16 and a blocking plate 17.

Detailed Description

The embodiments are described in detail below with reference to the accompanying drawings.

Combine figure 1, a subsider bottom blowdown structure, including subsider 1, cylindricality cavity 2, waste fitting discharging 3, 1 inside lower extreme of subsider is equipped with harrow material harrow 4, its characterized in that: the sedimentation tank 1 is cylindric, and 1 bottom of sedimentation tank is equipped with cylindricality cavity 2, and cylindricality cavity 2 sets up with the sedimentation tank 1 is concentric, be equipped with stirring vane 5 in the cylindricality cavity 2, stirring vane 5 sets up with harrow material 4 coaxial coupling, 2 lateral walls of cylindricality cavity are equipped with waste fitting discharging 3, be connected with on the waste fitting discharging 3 and clear stifled device 6.

The sewage discharge device 3 comprises an underflow pump 7 and a slag discharge port 8; the underflow pump 7 is connected to the side wall of one side of the cylindrical cavity 2 through a pipeline, and the slag discharge port 8 is connected to the side wall of the other side of the cylindrical cavity 2 through a pipeline; an inlet valve 9 of the underflow pump is arranged between the underflow pump 7 and the cylindrical cavity 2, and a slag discharge valve 10 is arranged on the slag discharge port 8 and the cylindrical cavity 2.

Clear stifled device includes grey water pump 15, through pipe connection in first valve 11 between underflow pump 7 and the underflow pump inlet valve 9, first valve 11 passes through pipe connection in grey water pump 15, and through pipe connection in second valve 12 between underflow pump inlet valve 9 and cylindricality cavity 2, second valve 12 passes through pipe connection in grey water pump 15, and through pipe connection in third valve 13 between cylindricality cavity 2 and sediment valve 10, third valve 13 passes through pipe connection in grey water pump 15, and through pipe connection in fourth valve 14 between sediment valve 13 and sediment discharge opening 8, fourth valve 14 passes through pipe connection in grey water pump 15. And a hand hole 16 is formed in the side wall of the cylindrical cavity 2, and a blocking plate 17 is arranged on the hand hole.

The stirring blades 5 are two-blade upturning type gradient fan blades.

The utility model discloses a theory of operation:

in the working state, the sedimentation tank 1 and the cylindrical cavity 2 are deposited with waste materials mixed by coal ash and waste water, the raking rake stirs the waste materials to keep the waste materials in a mixed fluid state all the time, and the stirring blades 5 further break the waste materials to ensure the waste materials to flow.

In normal operation, the underflow pump 7 is in an operating state, the inlet valve 9 of the underflow pump is in an open state, the other valves are in closed states, and waste materials in the settling tank 1 are directly pumped out from the underflow pump 7 through a pipeline and enter the filter for secondary treatment. When the waste materials which are difficult to treat are encountered, the slag discharging valve 10 and the slag discharging port 8 are opened, and the waste materials are directly discharged into the collecting trench.

When the internal waste is too thick and blocks the pipeline, the underflow pump 7 and the underflow pump inlet valve 9 are closed, the first valve 11 and the second valve 12 are opened, clear water is injected into the pipeline through the ash water pump 15, the pipeline is cleaned by water pressure, and the blockage is flushed back into the settling tank 1. And then closing the first valve 11 and the second valve 12, and opening the underflow pump inlet valve 9 and the underflow pump 7 to realize sewage discharge.

And under the condition that the inner pipeline is more seriously blocked, closing the underflow pump 7 and the underflow pump inlet valve 9, opening the third valve 13 and the fourth valve 14, performing high-pressure cleaning on the slag discharge pipeline through the ash water pump 15, dredging the pipeline, then closing the third valve 13 and the fourth valve 14, opening the slag discharge valve 10, and discharging the blocked substances into the collection trench. And when the blockage state disappears, the slag discharge valve 10 is closed again, the underflow pump 7 and the underflow pump inlet valve 9 are opened, and the sewage discharge operation is performed normally.

When the machine has to be stopped in a complex situation, the blockage 17 on the hand hole 16 can be opened, the blockage can be observed and manually taken out, and then the blockage 17 is closed, so that the sewage discharge is smooth.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a subsider bottom blowdown structure, includes subsider, cylindricality cavity, waste fitting discharging, the inside lower extreme of subsider is equipped with harrow rake, its characterized in that: the sedimentation tank is cylindrical, a cylindrical cavity is arranged at the bottom of the sedimentation tank and is concentric with the sedimentation tank, stirring blades are arranged in the cylindrical cavity and are coaxially connected with the rake, a sewage discharging device is arranged on the side wall of the cylindrical cavity, and a blockage removing device is connected to the sewage discharging device.

2. The bottom blowdown structure of the settling tank, as claimed in claim 1, wherein the blowdown means comprises an underflow pump, a slag discharge port; the underflow pump is connected to the side wall of one side of the cylindrical cavity through a pipeline, and the slag discharge port is connected to the side wall of the other side of the cylindrical cavity through a pipeline; an inlet valve of the underflow pump is arranged between the underflow pump and the cylindrical cavity, and a slag discharge valve is arranged on the slag discharge port and the cylindrical cavity.

3. The bottom sewage draining structure of the settling tank as claimed in claim 2, wherein the block removing device comprises an ash water pump, the underflow pump and the underflow pump inlet valve are connected to a first valve through a pipeline, the first valve is connected to the ash water pump through a pipeline, the underflow pump inlet valve and the cylindrical cavity are connected to a second valve through a pipeline, the second valve is connected to the ash water pump through a pipeline, the cylindrical cavity and the slag discharging valve are connected to a third valve through a pipeline, the third valve is connected to the ash water pump through a pipeline, the slag discharging valve and the slag discharging port are connected to a fourth valve through a pipeline, and the fourth valve is connected to the ash water pump through a pipeline.

4. The bottom sewage draining structure of the settling tank as claimed in claim 1, wherein the cylindrical chamber has a hand hole on its sidewall, and the hand hole has a blocking plate.

5. The bottom sewage draining structure of the settling tank as claimed in claim 1, wherein the stirring blades are two-blade upturning type slope blades.