CN213902997U - Automatic sampling device of sewage factory - Google Patents

Abstract

The utility model relates to an automatic sampling device of sewage factory, including setting up the immersible pump in the thief well, the setting is greater than quantitative container's sample container at the outside quantitative container of thief well and volume, quantitative container top is equipped with the water inlet, communicate with each other through the sample pipeline between the water inlet of immersible pump and quantitative container, quantitative container lateral wall is equipped with the overflow mouth, a water discharge for surpassing overflow mouth height in the quantitative container, quantitative container's bottom is equipped with the delivery port, communicate with each other through the pipeline of effluenting between quantitative container's delivery port and the sample container, the last one end that is close to quantitative container of the pipeline of effluenting installs the control valve. The automatic sampling device for the sewage plant is adopted to sample sewage, so that repeated quantitative sampling can be stably and reliably carried out, the water quantity of single sampling is relatively consistent, and the influence on the test result caused by non-uniform water quantity of single sampling can be reduced as much as possible; the automatic sampling device can automatically perform the sampling process, reduces the labor intensity of workers, and is convenient and labor-saving to sample.

Description

Automatic sampling device of sewage factory

Technical Field

The utility model relates to a sewage treatment technical field, more specifically say, it relates to an automatic sampling device of sewage factory.

Background

According to the environmental protection requirement, the existing water inlet and outlet laboratory water samples of the sewage plant are obtained by mixing sewage which is taken out from a sampling well for a plurality of times at regular time within 24 hours, and the water quantity sampled each time is a fixed value. The sampling process of timing and quantification is completed manually at present, on one hand, the manual sampling quantity is unstable every time, and great interference is brought to the final test result; on the other hand, repeated and frequent sampling is carried out, the amount of manual labor is large, and the sampling work is time-consuming and labor-consuming.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic sampling device of sewage factory can solve the technical problem that the manual sampling exists disturbs greatly, the hand labor volume is big to the experimental result among the prior art.

The utility model discloses an automatic sampling device of sewage factory provides following technical scheme:

the utility model provides an automatic sampling device of sewage factory, including setting up the immersible pump in the thief well, the setting is greater than quantitative container's sample container at the outside quantitative container of thief well and volume, the quantitative container top is equipped with the water inlet, communicate with each other through the sample pipeline between the water inlet of immersible pump and quantitative container, the quantitative container lateral wall is equipped with the overflow mouth, a water discharge for surpassing overflow mouth height in the quantitative container, the bottom of quantitative container is equipped with the delivery port, communicate with each other through the pipeline of effluenting between quantitative container's delivery port and the sample container, the last one end that is close to quantitative container of the pipeline of effluenting installs the control valve, it all is located quantitative container's below to effluent pipeline and sample container.

Further, sewage plant automatic sampling device still includes the PLC controller, and the PLC controller is connected with immersible pump and control valve electricity respectively for control valve opens and shuts and the immersible pump opens and stops.

Furthermore, the device also comprises a float switch arranged in the quantitative container, the float switch is electrically connected with the PLC, and the PLC controls the submersible pump to start and stop according to an input signal of the float switch.

Further, the submersible pump is a cutting type submersible pump.

Furthermore, sewage plant automatic sampling device still includes the return line, and the overflow mouth of ration container communicates with each other with the sampling well through return line.

To sum up, the utility model discloses following beneficial effect has:

the utility model discloses an automatic sampling device of sewage factory's single sample process as follows: closing the control valve, starting the submersible pump to pump water and sample, enabling pumped water to enter the quantitative container through the sampling pipeline, enabling the water in the quantitative container to overflow from the overflow port when the liquid level in the quantitative container is higher than the height of the lower edge of the overflow port, keeping the liquid level in the quantitative container at the lower edge of the overflow port, closing the submersible pump, opening the control valve, enabling the water in the quantitative container to flow into the sampling container under the action of gravity, and completing single quantitative sampling; repeating the above process to mix the water obtained quantitatively for several times in the sampling container. This automatic sampling device of sewage factory can be better the water yield of control single sample, and the sample process is reliable and stable, and the uniformity is good, can reduce the instability of single sample and give the interference that the chemical examination result brought, and takes a sample through PLC controller control, can realize automatic sampling, needn't consume the hand labor power, and equipment operation degree of automation is high, has reduced artifical intensity of labour. The float switch is installed in the quantitative container, once the liquid level reaches the quantitative sampling value, the PLC controller can control the submersible pump to be closed according to signals input by the float switch, and the submersible pump can be prevented from continuing to operate after the liquid level value reaches the quantitative sampling value, so that energy waste is caused. When the immersible pump is the cutting formula immersible pump, can prevent under the more condition of aquatic impurity that the immersible pump from blockking up, sewage factory automatic sampling device has better environmental suitability. When setting up the return line, the water of ration container surpasss the ration sample value and can flow back to the sampling well in, prevents to arouse the pollution in rivers to the external environment, can also avoid water waste.

Drawings

Fig. 1 is a schematic structural view of an automatic sampling device 1 of a sewage plant according to an embodiment of the present invention;

reference numerals: 1-sampling a well; 2-a dosing container; 3-a sampling vessel; 4-a sampling pipe; 5-a return line; 6-a float switch; 7-a control valve; 8-an outflow conduit; 9-submersible pump.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

The utility model discloses an automatic sampling device of sewage factory's embodiment 1 as follows:

the automatic sampling device for sewage plants, as shown in figure 1, comprises a submersible pump 9 positioned in a sampling well 1, a quantitative container 2 for quantitative sampling and a sampling container 3 for collecting and mixing sample water in the quantitative container for multiple times. The quantitative container 2 and the sampling container 3 are both positioned outside the sampling well 1, and the volume of the sampling container 3 is larger than that of the quantitative container 2. In this embodiment, immersible pump 9 is the cutting formula immersible pump that has cutting function among the prior art, can tear, cut off the impurity that has in the sewage, is fit for carrying sewage, and the immersible pump is difficult for blockking up when using.

The quantitative container 2 is a cylindrical container with two blocked ends, a water inlet is formed in the top of the container, a sampling pipeline 4 is connected between the submersible pump 9 and the water inlet of the quantitative container 2, and the submersible pump 9 can pump water in the sampling well 1 into the quantitative container 2 through the sampling pipeline 4. Overflow mouth and delivery port have been seted up respectively with the bottom on the lateral wall of ration container 2, wherein, the delivery port of ration container 2 communicates with each other with sample container 3 through the pipeline 8 that effuses, the one end that is close to ration container 2 on the pipeline 8 that effuses is equipped with control valve 7, the pipeline 8 that effuses and sample container 3 all are located the below of ration container 2, through above position setting, can make the hydroenergy in the ration container 2 naturally flow to sample container 3 under the action of gravity when control valve 7 switches on, do not need to install other pump water components, the structure of whole device has been simplified, and the cost is saved. The overflow mouth of quantitative container 2 then communicates with each other with sampling well 1 through return line 5, and when the liquid level in quantitative container 2 was higher than overflow mouth end opening edge, the water of many play in the quantitative container 2 can be through return line 5 backward flows to the sampling well in, guarantees that the liquid level in the quantitative container 2 is not higher than overflow mouth end opening edge to the water yield in the quantitative container 2 of realization sample at every turn all is the ration sample value.

This automatic sampling device of sewage factory still includes PLC controller and float switch 6. The float switch 6 is arranged inside the quantitative container 2, is electrically connected with the PLC controller and can input a switch signal to the PLC controller. The submersible pump 9 and the control valve 7 are respectively electrically connected with the PLC, and the PLC can control the submersible pump 9 to start and stop and control the on-off of the valve 7. When sampling for a single time, the PLC controller enables the submersible pump 9 to be started to pump water into the quantitative container 2, meanwhile, the control valve 7 is ensured to be closed, and the water in the quantitative container 2 is prevented from leaking into the sampling container 3; when the liquid level in the quantitative container 2 reaches the lower opening edge of the overflow opening, the switch contact inside the floating ball switch 6 is conducted, the floating ball switch 6 inputs signals to the PLC, and the PLC immediately controls the submersible pump 9 to be turned off and stops pumping water to the quantitative container 2. It should be noted that, because signal transmission has a certain delay, a small amount of water still remains in the sampling pipeline 4 after the submersible pump 9 is turned off, and the like, after the switch contact inside the float switch 6 is turned on, the small amount of water still enters the quantitative container 2, and at this time, the water higher than the lower opening edge of the overflow opening can directly flow back to the sampling well 1 through the overflow opening, so that the water in the quantitative container 2 is a quantitative sampling value, and the liquid level does not exceed the lower opening edge of the overflow opening. The float switch is arranged, so that the PLC controls the submersible pump 9 to be started and stopped according to an input signal of the float switch, and the situation that the submersible pump 9 still operates after the liquid level in the quantitative container 2 reaches a quantitative value can be prevented, and energy waste is caused.

The utility model discloses an automatic sampling device of sewage factory's single sample process as follows: the PLC controller controls the submersible pump 9 to be opened and simultaneously closes the control valve 7, the submersible pump 9 pumps water in the sampling well 1 into the quantitative container 2, when the liquid level in the quantitative container 2 reaches the lower opening edge of the overflow opening, the float switch 6 transmits signals to the PLC controller,

the PLC controller controls the submersible pump 9 to be closed, the submersible pump 9 does not pump water any more, redundant water in the quantitative container 2 flows back to the sampling well 1 through the overflow port, and the liquid level of the water in the quantitative container 2 is not higher than the lower opening edge of the overflow port and is kept at a quantitative sampling value. Then the PLC controller controls the control valve 7 to be opened, so that the outflow pipeline 8 is conducted, and the water in the quantitative container 2 flows to the sampling container 3 under the action of self gravity, thereby completing single quantitative sampling. The PLC timing control device repeats the single sampling process, and the mixed water obtained by multiple times of quantitative sampling can be collected in the sampling container.

In other embodiments, the float switch may not be provided, and the operation time of the submersible pump 9 is set according to the power of the submersible pump 9 and the specification of the quantitative container 2, so as to ensure that the pumped water amount is greater than the quantitative sampling value, so that the water amount in the quantitative container 2 is the quantitative sampling value after each sampling.

Alternatively, in other embodiments, no return conduit is provided and the water overflowing from the dosing container flows directly out of the dosing container via the overflow.

The utility model discloses an automatic sampling device of sewage factory, the water yield of control single sample that can be better, sample water yield uniformity is better, through the automatic sample of PLC controller, and the sample process is reliable and stable, can reduce the instability of single sample, avoids the uncertain interference that artifical sample brought, has reduced artifical intensity of labour.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. The utility model provides an automatic sampling device of sewage factory, which is characterized by, including setting up the immersible pump in the thief well, set up the sample vessel that is greater than the sample vessel at the outside ration container of thief well and volume, the ration container top is equipped with the water inlet, communicate with each other through the sample pipeline between the water inlet of immersible pump and ration container, the ration container lateral wall is equipped with the overflow mouth, a water discharge for surpassing overflow mouth height in the ration container, the bottom of ration container is equipped with the delivery port, communicate with each other through the pipeline of efflueing between the delivery port of ration container and the sample vessel, the last one end that is close to the ration container of the pipeline of efflueing installs the control valve, it all lies in the below of ration container to efflue pipeline and sample vessel.

2. The automatic sampling device of sewage plant of claim 1, further comprising a PLC, wherein the PLC is electrically connected to the submersible pump and the control valve respectively, and is used for controlling the opening and closing of the control valve and the starting and stopping of the submersible pump.

3. The automatic sampling device of sewage plant of claim 2, further comprising a float switch installed in the quantitative container, the float switch being electrically connected to the PLC controller, the PLC controller controlling the submersible pump to start and stop according to an input signal of the float switch.

4. The automatic sampling device of a sewage plant of any one of claims 1 to 3, wherein the submersible pump is a submersible cutting pump.

5. The automatic sampling device of sewage plants as claimed in any of claims 1 to 3, further comprising a return pipe through which the overflow port of the dosing container communicates with the sampling well.

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