CN221123940U

CN221123940U - Sewage mixing and sampling device

Info

Publication number: CN221123940U
Application number: CN202322805613.XU
Authority: CN
Inventors: 徐贵明; 王伟; 姜安民; 刘昱旻
Original assignee: Ezhou Langong Water Service Co ltd
Current assignee: Ezhou Langong Water Service Co ltd
Priority date: 2023-10-18
Filing date: 2023-10-18
Publication date: 2024-06-11
Anticipated expiration: 2033-10-18

Abstract

The utility model provides a sewage mixing and sampling device which comprises a storage barrel and a first water conveying pipe; the quantitative storage device also comprises a quantitative barrel, a second water delivery pipe and a second emptying valve, wherein the quantitative barrel is arranged on one side of the storage barrel, and the quantitative barrel and the storage barrel are vertically arranged relative to the ground; one end of the first water pipe is fixedly arranged at one end of the storage barrel far away from the ground and communicated with the storage barrel, and the other end of the first water pipe is fixedly arranged in the middle of the side part of the quantitative barrel and communicated with the quantitative barrel; one end of the second water pipe is fixedly arranged at one end of the quantitative barrel far away from the ground and communicated with the quantitative barrel, and the other end of the second water pipe is used for connecting a sewage source; one end of the second emptying valve is fixedly arranged at the bottom of the quantitative barrel and communicated with the quantitative barrel, and the front end filtering of the sewage sampling pipeline is realized in a sedimentation and flushing mode, so that the sewage sampling pipeline is not easy to block in the use process, and the maintenance workload of operators is effectively reduced.

Description

Sewage mixing and sampling device

Technical Field

The utility model relates to the technical field of sewage sampling, in particular to a sewage mixing and sampling device.

Background

When sewage enters a sewage treatment plant, the sewage quality needs to be sampled and analyzed, and the current conventional sampling mode is to extract samples from the sewage through a sampling device, wherein the sampling device comprises instantaneous samples and mixed samples, and a filtering device is arranged at the front end of a water inlet of the sampling device and is used for filtering sediment in the water.

The utility model patent with the publication number of CN214067122U discloses an integrated sewage on-line monitoring sampling pipeline, which comprises a filtering water tank, wherein a filtering grating plate is arranged in the filtering water tank and is used for filtering sediment in water.

According to the technical scheme, the filtering grating plate is easy to be blocked by sediment in the using process, so that the filtering device needs to be maintained frequently to keep running water smooth, the maintenance workload of operators can be increased, and the sewage mixing and sampling device with small maintenance workload is necessary to solve the technical problems.

Disclosure of utility model

In view of the above, the utility model provides a sewage mixing and sampling device, which can realize the front end filtration of a sewage sampling pipeline in a sedimentation and flushing mode, is not easy to block in the use process, and effectively reduces the maintenance workload of operators.

The technical scheme of the utility model is realized as follows: the utility model provides a sewage mixing and sampling device which comprises a storage barrel and a first water conveying pipe, wherein the storage barrel is provided with a first water inlet pipe;

also comprises a quantitative barrel, a second water delivery pipe and a second emptying valve, wherein,

The quantitative barrel is arranged at one side of the storage barrel, and the quantitative barrel and the storage barrel are vertically arranged relative to the ground;

One end of the first water pipe is fixedly arranged at one end of the storage barrel far away from the ground and communicated with the storage barrel, and the other end of the first water pipe is fixedly arranged in the middle of the side part of the quantitative barrel and communicated with the quantitative barrel;

One end of the second water pipe is fixedly arranged at one end of the quantitative barrel far away from the ground and communicated with the quantitative barrel, and the other end of the second water pipe is used for connecting a sewage source;

one end of the second emptying valve is fixedly arranged at the bottom of the quantitative barrel and communicated with the quantitative barrel.

On the basis of the technical proposal, the utility model preferably further comprises a first water outlet pipe and a second water outlet pipe, wherein,

The first water outlet pipe and the second water outlet pipe are both arranged in the quantitative barrel;

One end of the second water pipe extends to the inside of the quantitative barrel towards the ground direction and is fixedly connected with the first water outlet pipe and the second water outlet pipe;

one end of the first water outlet pipe and one end of the second water outlet pipe are communicated with one end of the second water delivery pipe extending to the inside of the quantitative barrel;

one end of the first water outlet pipe, which is far away from the second water delivery pipe, faces the bottom of the quantifying barrel;

One end of the second water outlet pipe far away from the second water delivery pipe extends to the inner side wall of the quantitative barrel.

On the basis of the technical proposal, preferably, the bottom of the quantifying barrel is a conical barrel bottom, wherein,

The second emptying valve is arranged at the lower part of the conical barrel bottom.

On the basis of the technical proposal, the valve is also preferably included, wherein,

A valve is arranged on the pipe body of one end of the first water pipe close to the quantitative barrel;

the pipe body of the second water pipe is also provided with a valve.

On the basis of the technical proposal, the utility model preferably further comprises a second overflow pipe, wherein,

The second overflow pipe is fixedly connected with the quantitative barrel;

one end of the second overflow pipe extends to the inside of one end of the quantifying barrel far away from the ground, and the other end of the second overflow pipe is arranged outside the quantifying barrel;

One end of the second emptying valve, which is far away from the quantifying barrel, is communicated with a pipe body of the second overflow pipe, which is arranged outside the quantifying barrel, through a pipeline.

On the basis of the technical proposal, the stirring device preferably further comprises a stirring motor, a stirring shaft and stirring paddles, wherein,

The shell of the stirring motor is fixedly arranged at one end of the storage barrel far away from the ground, and the output shaft of the stirring motor penetrates into the storage barrel along the bottom direction of the barrel;

the stirring shaft is arranged in the storage barrel, one end of the stirring shaft is fixedly connected with the output shaft of the stirring motor, and the other end of the stirring shaft is fixedly connected with the stirring blade;

The stirring paddle is arranged inside the bottom of the quantitative barrel.

On the basis of the technical proposal, the device preferably further comprises a first overflow pipeline, wherein,

The first overflow pipeline is fixedly connected with the storage barrel;

One end of the first overflow pipeline extends to the inside of one end of the quantifying barrel far away from the ground, and the other end of the first overflow pipeline is arranged outside the quantifying barrel.

On the basis of the technical proposal, the utility model preferably further comprises a first emptying valve, wherein,

One end of the first emptying valve is fixedly arranged at the bottom of the storage barrel and communicated with the storage barrel, and the other end of the first emptying valve is communicated with a pipe body arranged outside the storage barrel through a pipeline.

On the basis of the technical proposal, the device also preferably comprises an instrument sampling tube and a sample feeding pump, wherein,

One end of the instrument sampling tube is fixedly arranged at the side part of the storage barrel and communicated with the storage barrel;

The sample feeding pump is arranged outside the storage barrel and is arranged on the tube body of the instrument sampling tube.

On the basis of the technical proposal, the utility model preferably further comprises a return pipe, wherein,

One end of the return pipe is fixedly provided with one end of the storage barrel, which is far away from the ground, and is communicated, and the other end of the return pipe is fixedly arranged on the pipe body of one end of the instrument sampling pipe, which is far away from the sample feeding pump, and is communicated.

Compared with the prior art, the sewage mixing and sampling device has the following beneficial effects:

(1) Through setting up the fixed one end that sets up on the storage barrel kept away from ground and the intercommunication, the fixed one end that sets up in the middle of the lateral part of ration bucket and communicates the second raceway of the other end is fixed to be set up in the fixed one end that the ration bucket kept away from ground and communicates, the other end is used for connecting sewage source, the fixed barrel head department that sets up at the ration bucket of one end of second relief valve communicates, this structure is convenient for subside the sewage in the ration bucket of will infusing, make silt and water stratification, realize filtering, filter the back, get water from the middle part of ration bucket, close the water intake pipeline after the water intaking, wash the ration bucket to the water intaking in the ration bucket again, open the second relief valve and empty the sewage in the ration bucket, realize the cleanness of ration bucket, the front end that above-mentioned structure has realized sewage sampling pipeline filters and is difficult to be blocked up, effectively reduce operating personnel's maintenance work volume.

(2) Through setting up the one end that the second raceway was kept away from to first outlet pipe towards the barrel head of ration bucket, the one end that the second raceway was kept away from to the second outlet pipe extends to the inside wall department of ration bucket, conveniently erodees the inside wall and the barrel head of ration bucket, improves the inside clean effect of ration bucket.

(3) Through setting up the barrel head of ration bucket for the toper barrel head, the second relief valve sets up the low side at toper barrel head, be convenient for sewage to the second relief valve collection, be favorable to the quick evacuation of ration bucket, improve clean efficiency.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a plan view of a sewage mixing and sampling device of the present utility model;

FIG. 2 is a schematic view showing the internal structure of the quantitative barrel of the present utility model;

FIG. 3 is a schematic view showing the internal structure of the storage tub according to the present utility model;

FIG. 4 is a schematic view of the flow direction of wastewater according to the present utility model;

In the figure: the device comprises a storage barrel 1, a first water conveying pipe 2, a quantitative barrel 3, a second water conveying pipe 4, a second emptying valve 5, a first water outlet pipe 6, a second water outlet pipe 7, a valve 8, a second overflow pipe 9, a stirring motor 10, a stirring shaft 11, stirring paddles 12, a first overflow pipeline 13, a first emptying valve 14, an instrument sampling pipe 15, a sample feeding pump 16, a return pipe 17, a sewage conveying pipeline 18 and a self-priming pump 19.

Detailed Description

The following description of the embodiments of the present utility model will be made in detail and with reference to specific embodiments of the present utility model, but it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

As shown in fig. 1 to 4, the sewage mixing and sampling device of the utility model comprises a storage barrel 1 and a first water conveying pipe 2; the quantitative storage device further comprises a quantitative barrel 3, a second water conveying pipe 4 and a second emptying valve 5, wherein the quantitative barrel 3 is arranged on one side of the storage barrel 1, and the quantitative barrel 3 and the storage barrel 1 are vertically arranged relative to the ground; one end of the first water pipe 2 is fixedly arranged at one end of the storage barrel 1 far away from the ground and communicated with the storage barrel, and the other end of the first water pipe is fixedly arranged in the middle of the side part of the quantitative barrel 3 and communicated with the quantitative barrel; one end of the second water pipe 4 is fixedly arranged at one end of the quantitative barrel 3 far away from the ground and communicated with the quantitative barrel, and the other end of the second water pipe is used for connecting a sewage source; one end of the second emptying valve 5 is fixedly arranged at the bottom of the quantitative barrel 3 and communicated with the quantitative barrel.

Specifically, the structure has formed the sewage sampling pipeline, the volume of the storage bucket 1 in the pipeline is greater than the volume of ration bucket 3, sewage in the sewage source is poured into ration bucket 3 through second raceway 4, stop the water injection back, keep still the ration bucket 3 and make its inside sewage subside, make silt and the moisture layer in the sewage, realize filtering, after the filtration, the storage bucket 1 is through the middle part water sampling of first raceway 2 from ration bucket 3, close the water sampling pipeline after the water intaking, water injection is washed the ration bucket 3 in the ration bucket 3 again, open the evacuation of second relief valve 5 with the interior sewage of ration bucket, realize the cleanness of ration bucket 3, thereby realize the front end filtration of sewage sampling pipeline, this filtration is difficult for being blocked up, can effectually reduce operating personnel's maintenance work load.

As a preferred embodiment of the sewage mixing and sampling device, the device further comprises a first water outlet pipe 6 and a second water outlet pipe 7, wherein the first water outlet pipe 6 and the second water outlet pipe 7 are arranged in the quantitative barrel 3; one end of the second water pipe 4 extends to the inside of the quantitative barrel 3 towards the ground direction and is fixedly connected with the first water outlet pipe 6 and the second water outlet pipe 7; one end of the first water outlet pipe 6 and one end of the second water outlet pipe 7 are communicated with one end of the second water delivery pipe 4 extending to the inside of the quantitative barrel 3; one end of the first water outlet pipe 6 far away from the second water pipe 4 faces the bottom of the quantifying barrel 3; one end of the second water outlet pipe 7, which is far away from the second water pipe 4, extends to the inner side wall of the quantitative barrel 3.

Specifically, as shown in fig. 2, the first water outlet pipe 6 and the second water outlet pipe 7 are in a circular pipe shape, the first water outlet pipe 6 is used for discharging water towards the bottom of the quantitative barrel 3, the second water outlet pipe 7 is used for discharging water towards the inner side wall of the quantitative barrel 3, the second water outlet pipe 7 is multiple in an annular array in the quantitative barrel 3, the multiple second water outlet pipes 7 are used for flushing the inner side walls of the quantitative barrel 3 towards the inner side walls of the quantitative barrel 3 in different directions, and when the quantitative barrel 3 is flushed, the second water outlet pipe 7 can flush the inner side walls of the quantitative barrel 3, so that the cleaning effect of the inside of the quantitative barrel 3 is improved.

As a preferred embodiment of the sewage mixing and sampling device, the bottom of the quantifying barrel 3 is a conical barrel bottom, wherein the second emptying valve 5 is arranged at the lower part of the conical barrel bottom.

Specifically, as shown in fig. 2, the conical barrel bottom is beneficial to collecting sewage to the second emptying valve 5, is beneficial to quickly emptying the quantitative barrel 3, and improves the cleaning efficiency.

As a preferred embodiment of the sewage mixing and sampling device, the device also comprises a valve 8, wherein the valve 8 is arranged on the pipe body of one end of the first water pipe 2 close to the quantitative barrel 3; the pipe body of the second water pipe 4 is also provided with a valve 8.

Specifically, as shown in fig. 1, the valve 8 is an electronic valve or a mechanical valve, and is used for realizing on-off of the first water pipe 2 and the second water pipe 4, so that intermittent water supplementing into the quantitative barrel 3 and water taking from the quantitative barrel 3 are facilitated, when water is injected, the valve 8 on the first water pipe 2 is closed, the second emptying valve 5 is closed, the valve 8 on the second water pipe 4 is opened, after water injection, the valve 8 on the second water pipe 4 is closed, sewage is settled in the quantitative barrel 3, after sewage layering, the valve 8 on the first water pipe 2 is opened, and sewage enters the storage barrel 1 along the first water pipe 2.

As a preferred embodiment of the sewage mixing and sampling device, the device also comprises a second overflow pipe 9, wherein the second overflow pipe 9 is fixedly connected with the quantitative barrel 3; one end of the second overflow pipe 9 extends to the inside of one end of the quantifying barrel 3 far away from the ground, and the other end is arranged outside the quantifying barrel 3; one end of the second emptying valve 5 far away from the quantitative barrel 3 is communicated with a pipe body of the second overflow pipe 9 arranged outside the quantitative barrel 3 through a pipeline.

Specifically, as shown in fig. 1, the second overflow pipe 9 is used for quantifying the sewage in the quantifying barrel 3, when the sewage injected into the quantifying barrel 3 is excessive, the sewage overflowed from the second overflow pipe 9 overflows out of the quantifying barrel 3, and the overflowed sewage can be sent to a sewage source again or can be sent to external sewage purifying equipment.

As a preferred embodiment of the sewage mixing and sampling device, the sewage mixing and sampling device further comprises a stirring motor 10, a stirring shaft 11 and stirring paddles 12, wherein the shell of the stirring motor 10 is fixedly arranged at one end of the storage barrel 1 far away from the ground, and the output shaft of the stirring motor 10 penetrates into the storage barrel 1 along the bottom direction of the barrel; the stirring shaft 11 is arranged in the storage barrel 1, one end of the stirring shaft 11 is fixedly connected with the output shaft of the stirring motor 10, and the other end of the stirring shaft is fixedly connected with the stirring blade 12; the stirring blade 12 is provided inside the bottom of the dosing barrel 3.

Specifically, as shown in fig. 3, one end of the stirring shaft 11 is fixedly connected with an output shaft of the stirring motor 10 through a coupling, the stirring motor 10 drives the stirring shaft 11 to rotate when in operation, and the stirring shaft 11 drives the stirring blade 12 to rotate to stir sewage for sewage mixing.

As a preferred embodiment of the sewage mixing and sampling device, the sewage mixing and sampling device further comprises a first overflow pipeline 13, wherein the first overflow pipeline 13 is fixedly connected with the storage barrel 1; one end of the first overflow pipe 13 extends to the inside of one end of the dosing barrel 3 away from the ground, and the other end is disposed outside the dosing barrel 3.

Specifically, as shown in fig. 1, the first overflow pipe 13 is used for quantifying the sewage in the storage tank 1, when the sewage injected into the storage tank 1 is excessive, the sewage overflowed from the first overflow pipe 13 overflows out of the storage tank 1, and the overflowed sewage can be sent to a sewage source again or can be sent to external sewage purification equipment.

As a preferred embodiment of the sewage mixing and sampling device, the device further comprises a first emptying valve 14, an instrument sampling tube 15, a sample feeding pump 16 and a return pipe 17, wherein one end of the first emptying valve 14 is fixedly arranged at the bottom of the storage barrel 1 and communicated with the bottom of the storage barrel, and the other end of the first emptying valve is communicated with a pipe body of the first overflow pipeline 13 arranged outside the storage barrel 1 through a pipeline; one end of the instrument sampling tube 15 is fixedly arranged at the side part of the storage barrel 1 and communicated with the storage barrel; the sample feeding pump 16 is arranged outside the storage barrel 1 and is arranged on the tube body of the instrument sampling tube 15; one end of the return pipe 17 is fixedly provided with one end of the storage barrel 1 far away from the ground and communicated, and the other end is fixedly provided on the pipe body of one end of the instrument sampling pipe 15 far away from the sample feeding pump 16 and communicated.

Specifically, as shown in fig. 1, the first emptying valve 14 is used for emptying the sewage in the storage barrel 1, so as to realize the cleaning of the storage barrel 1, the emptied sewage is led into the first overflow pipeline 13 through the pipeline, the sewage is re-sent into the sewage source or sent into external sewage purification equipment through the first overflow pipeline 13, during sampling, the sample feeding pump 16 works, the sewage in the storage barrel 1 is pumped out, and a water sample is conveyed through the instrument sampling pipe 15, in the pumping process, the redundant sewage flows back into the storage barrel 1 from the backflow pipe 17, as shown in fig. 3, the barrel bottom of the storage barrel 1 is a conical barrel bottom, the first emptying valve 14 is arranged at the lower part of the conical barrel bottom, the conical barrel bottom is favorable for collecting the sewage to the first emptying valve 14, the rapid emptying of the storage barrel 1 is favorable, and the cleaning efficiency is improved.

In the above-mentioned structure, the sewage source is sewage in the equipment such as effluent water sump, sewage tank, sewer pipe, for making things convenient for sewage to get into ration bucket 3, and ration bucket 3 sets up for ground high level, and storage bucket 1 sets up for ground low level, and ration bucket 3 and storage bucket 1 can be installed subaerial through high, low support, also can install ration bucket 3 to storage bucket 1 top.

The sewage source is provided with the sewage conveying pipeline 18, sewage in the sewage source is led out by the sewage conveying pipeline 18, one end of the sewage conveying pipeline 18 far away from the sewage source is connected with external sewage purifying equipment, the sewage conveying pipeline 18 is provided with the self-priming pump 19, the water inlet end of the second water conveying pipeline 4 is connected with the sewage conveying pipeline 18 between the sewage source and the self-priming pump 19, when the self-priming pump 19 works, the sewage is pumped through the self-priming pump 19 and the sewage conveying pipeline 18, during pumping, the self-priming pump 19 is started for one minute, so that the sewage sampling pipeline is in a siphon state, the sewage enters the quantitative barrel 3 along the second water conveying pipeline 4 in the state, or the self-priming pump 19 is respectively arranged on the pipe bodies of the second water conveying pipeline 4 and the first water conveying pipeline 2, the sewage is directly pumped, the storage barrel 1 and the quantitative barrel 3 at the moment can be flexibly arranged according to practical requirements without adopting the high-low setting mode.

As shown in fig. 4, the sampling process is as follows:

S1, starting a valve 8 on a second water pipe 4, filling water samples, overflowing excessive water samples from a second overflow pipe 9, closing the valve for standing for 30min, clarifying sand, starting the valve 8 on the first water pipe 2, enabling sewage to enter a storage barrel 1, starting a stirring motor 10 to enable a stirring blade 12 to rotate, stopping stirring the sewage for 2min, starting a second emptying valve 5 and the valve 8 on the second water pipe 4, closing the valve 8 on the first water pipe 2, flushing the quantitative barrel 3 for 1min, and then respectively closing the second emptying valve 5 and the valve 8 on the second water pipe 4.

After S2, 1H, sampling again and flushing according to the step S1.

S3, repeating the operations for sampling repeatedly, standing the storage barrel 1 for 30min after sampling for 6h, starting the sample feeding pump 16, extracting the water sample, opening the first emptying valve 14 to empty the storage barrel 1, closing, and entering the next sampling link.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A sewage mixing and sampling device comprises a storage barrel (1) and a first water conveying pipe (2);

The method is characterized in that: also comprises a quantitative barrel (3), a second water delivery pipe (4) and a second emptying valve (5), wherein,

The quantitative barrel (3) is arranged at one side of the storage barrel (1), and the quantitative barrel (3) and the storage barrel (1) are vertically arranged relative to the ground;

one end of the first water pipe (2) is fixedly arranged at one end of the storage barrel (1) far away from the ground and communicated with the storage barrel, and the other end of the first water pipe is fixedly arranged in the middle of the side part of the quantitative barrel (3) and communicated with the storage barrel;

One end of the second water pipe (4) is fixedly arranged at one end of the quantitative barrel (3) far away from the ground and communicated with the quantitative barrel, and the other end of the second water pipe is used for connecting a sewage source;

One end of the second emptying valve (5) is fixedly arranged at the bottom of the quantitative barrel (3) and communicated with the quantitative barrel.

2. A sewage mixing and sampling device as claimed in claim 1, wherein: also comprises a first water outlet pipe (6) and a second water outlet pipe (7), wherein,

The first water outlet pipe (6) and the second water outlet pipe (7) are both arranged in the quantitative barrel (3);

One end of the second water pipe (4) extends to the inside of the quantitative barrel (3) towards the ground direction and is fixedly connected with the first water outlet pipe (6) and the second water outlet pipe (7);

One end of the first water outlet pipe (6) and one end of the second water outlet pipe (7) are communicated with one end of the second water delivery pipe (4) extending to the inside of the quantitative barrel (3);

One end of the first water outlet pipe (6) far away from the second water delivery pipe (4) faces to the bottom of the quantifying barrel (3);

one end of the second water outlet pipe (7) far away from the second water delivery pipe (4) extends to the inner side wall of the quantitative barrel (3).

3. A sewage mixing and sampling device as claimed in claim 2, wherein: the bottom of the quantifying barrel (3) is a conical barrel bottom, wherein,

The second emptying valve (5) is arranged at the lower part of the conical barrel bottom.

4. A sewage mixing and sampling device as claimed in claim 1, wherein: also comprises a valve (8), wherein,

A valve (8) is arranged on the pipe body of one end of the first water pipe (2) close to the quantitative barrel (3);

The pipe body of the second water pipe (4) is also provided with a valve (8).

5. A sewage mixing and sampling device as claimed in claim 1, wherein: also comprises a second overflow pipe (9), wherein,

The second overflow pipe (9) is fixedly connected with the quantitative barrel (3);

One end of the second overflow pipe (9) extends to the inside of one end of the quantifying barrel (3) far away from the ground, and the other end of the second overflow pipe is arranged outside the quantifying barrel (3);

One end of the second emptying valve (5) far away from the quantitative barrel (3) is communicated with a pipe body arranged outside the quantitative barrel (3) through a pipeline, and the second overflow pipe (9) is arranged on the pipe body.

6. A sewage mixing and sampling device as claimed in claim 1, wherein: also comprises a stirring motor (10), a stirring shaft (11) and stirring blades (12), wherein,

The shell of the stirring motor (10) is fixedly arranged at one end of the storage barrel (1) far away from the ground, and the output shaft of the stirring motor (10) penetrates into the storage barrel (1) along the bottom direction of the barrel;

The stirring shaft (11) is arranged in the storage barrel (1), one end of the stirring shaft (11) is fixedly connected with the output shaft of the stirring motor (10), and the other end of the stirring shaft is fixedly connected with the stirring blade (12);

the stirring blade (12) is arranged inside the barrel bottom of the quantitative barrel (3).

7. A sewage mixing and sampling device as claimed in claim 1, wherein: further comprising a first overflow pipe (13), wherein,

The first overflow pipeline (13) is fixedly connected with the storage barrel (1);

One end of the first overflow pipeline (13) extends to the inside of one end of the quantifying barrel (3) far away from the ground, and the other end of the first overflow pipeline is arranged outside the quantifying barrel (3).

8. The wastewater mixing and sampling device of claim 7, wherein: also comprises a first blow-off valve (14), wherein,

One end of the first emptying valve (14) is fixedly arranged at the bottom of the storage barrel (1) and communicated with the storage barrel, and the other end of the first emptying valve is communicated with a pipe body arranged outside the storage barrel (1) through a pipeline, wherein the pipe body is arranged outside the storage barrel (1).

9. A sewage mixing and sampling device as claimed in claim 1, wherein: also comprises an instrument sampling tube (15) and a sample feeding pump (16), wherein,

One end of the instrument sampling tube (15) is fixedly arranged at the side part of the storage barrel (1) and communicated with the storage barrel;

The sample feeding pump (16) is arranged outside the storage barrel (1) and is arranged on the tube body of the instrument sampling tube (15).

10. The wastewater mixing and sampling device of claim 9, wherein: also comprises a return pipe (17), wherein,

One end of the return pipe (17) is fixedly provided with one end of the storage barrel (1) far away from the ground and communicated, and the other end is fixedly provided with the pipe body of one end of the instrument sampling pipe (15) far away from the sample feeding pump (16) and communicated.