CN220063588U - Water quality on-line monitoring mechanism - Google Patents

Abstract

The utility model discloses a water quality on-line monitoring mechanism which comprises a sampling tube, a sampling pump, a water quality detector, a return tube, a sampling valve, two electric control valves, a self-cleaning filter assembly and a PLC (programmable logic controller) controller which is connected with the filter assembly, the electric control valves, the sampling valve, the water quality detector and the sampling pump, wherein the two electric control valves are correspondingly arranged on the return tube and the sampling tube, the outlet of the sampling tube is communicated with the inlet of the sampling pump, the outlet of the sampling pump is communicated with the filtered water inlet of the filter assembly, the filtered water outlet of the filter assembly is divided into two paths, one path is communicated with the water quality detector after passing through the sampling valve, and the other path is communicated with the inlet of the return tube. According to the utility model, the self-cleaning filter assembly is arranged at the upstream of the water quality detector, so that impurities such as sediment contained in the water sample are filtered before the water sample enters the water quality detector, the situation that the water quality detector is blocked by the impurities is avoided, the maintenance frequency is reduced, and the water quality monitoring work can be continuously and stably carried out for a long time.

Description

Water quality on-line monitoring mechanism

Technical Field

The utility model relates to the technical field of water quality monitoring, in particular to a water quality on-line monitoring mechanism.

Background

In the wastewater treatment process, in order to determine whether the wastewater can enter a subsequent link from a current treatment link for treatment and whether the final wastewater after treatment reaches the discharge standard, a water quality on-line monitoring mechanism is required to be arranged at the corresponding position of the wastewater treatment facility for monitoring the water quality. The existing water quality on-line monitoring mechanism is shown in fig. 2, and is composed of a sampling tube for collecting a water sample, a sampling pump with an inlet communicated with the outlet end of the sampling tube and a water quality detector with a detection port communicated with the outlet of the sampling pump, and obviously, the existing water quality on-line monitoring mechanism does not remove impurities such as sediment before the water sample enters the water quality detector, so that the situation that the water quality detector is blocked by the impurities easily occurs, frequent shutdown is needed to clean the water quality detector, inconvenience is caused, the working efficiency of the whole mechanism is low, and the water quality monitoring work cannot be continuously and stably carried out for a long time.

Disclosure of Invention

Therefore, the utility model aims to provide a water quality detection mechanism which is convenient to use, is not easy to block and can continuously and stably work for a long time, so as to solve the problems in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a quality of water on-line monitoring mechanism, includes sampling tube, sample pump, water quality testing appearance, back flow, sampling valve, two automatically controlled valves, can self-cleaning filter component and with filter component the automatically controlled valve the sampling valve the water quality testing appearance with the PLC controller that the sample pump all links to each other, two automatically controlled valve corresponds to be established the back flow with on the sampling tube, the export of sampling tube with the import of sample pump is linked together, the export of sample pump with filter component's drainage entry is linked together, filter component's drainage export divide two ways, one way behind the sample valve with water quality testing appearance is linked together, and another way is linked together with the import of back flow.

In one embodiment of the utility model, the filtering component comprises a sand filtering tank, a quartz sand filtering layer and a spraying layer which are erected in the sand filtering tank from top to bottom, a water supply tank, a delivery pump, a flushing valve, a suction pump and a trench which are positioned outside the sand filtering tank, wherein the suction pump, the flushing valve and the delivery pump are all connected with the PLC, a flushing water outlet is arranged at the top of the sand filtering tank, a flushing water inlet communicated with the spraying layer, a filtering water inlet positioned above the quartz sand filtering layer and a filtering water outlet positioned below the spraying layer are arranged on the side wall of the sand filtering tank, the flushing water inlet is communicated with the water supply tank through the delivery pump after passing through the flushing valve, and the flushing water outlet is communicated with the trench through the suction pump.

In one embodiment of the utility model, a vibrator is arranged at a position corresponding to the quartz sand filtering layer on the outer wall of the sand filtering tank, and the vibrator is connected with the PLC.

In one embodiment of the utility model, a liquid level sensor connected with the PLC is arranged in the water supply tank.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

1. according to the utility model, the filtering component is arranged at the upstream of the water quality detector, so that impurities such as sediment contained in the water sample before the water sample enters the water quality detector are filtered, the situation that the water quality detector is blocked by the impurities is avoided, the maintenance frequency is reduced, and the water quality monitoring work can be continuously and stably carried out for a long time.

2. According to the utility model, the filtering assembly is provided with the self-cleaning function, so that the defect of manually cleaning the filtered matters is overcome while the filtering effect is ensured, the convenience of use is improved, and the long-time continuous and stable operation of the whole mechanism is ensured.

3. According to the utility model, the vibrator is arranged at the corresponding position of the outer wall of the sand filtering tank and the quartz sand filtering layer, so that the caking of filtering objects on the quartz sand filtering layer is avoided, the self-cleaning effect is ensured, and the filtering efficiency is improved.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which

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

FIG. 2 is a schematic diagram of a conventional water quality on-line monitoring mechanism;

description of the specification reference numerals: 1. sampling tube, 2, sampling pump, 3, water quality testing appearance, 4, back flow, 5, sampling valve, 6, automatically controlled valve, 7, filtration subassembly, 71, sand filtering jar, 72, quartz sand filtering layer, 73, spray layer, 74, supply tank, 75, delivery pump, 76, flush valve, 77, suction pump, 78, trench.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

With respect to the foregoing and other features, aspects and advantages of the utility model, they will become apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying drawings. The directional terms mentioned in the following embodiments are, for example: upper, lower, left, right, front or rear, etc., are merely references to the directions of the drawings. Thus, directional terminology is used for the purpose of illustration and is not intended to be limiting of the utility model, and furthermore, like reference numerals refer to like elements throughout the embodiments.

Referring to fig. 1, an on-line water quality monitoring mechanism comprises a sampling tube 1, a sampling pump 2, a water quality detector 3, a return tube 4, a sampling valve 5, two electric control valves 6, a filtering component 7 capable of self-cleaning, and a PLC (not shown in the figure) which is connected with the filtering component 7, the electric control valves 6, the sampling valve 5, the water quality detector 3 and the sampling pump 2, wherein the two electric control valves 6 are correspondingly arranged on the return tube 4 and the sampling tube 1, the outlet of the sampling tube 1 is communicated with the inlet of the sampling pump 2, the outlet of the sampling pump 2 is communicated with the filtered water inlet of the filtering component 7, the filtered water outlet of the filtering component 7 is divided into two paths, one path is communicated with the water quality detector 3 after passing through the sampling valve 5, and the other path is communicated with the inlet of the return tube 4. So set up for during the use, communicate the import of sampling tube 1 and the export of back flow 4 on the waste pipe of waste water treatment facility needs monitoring position department, then, input sampling interval time in the PLC controller according to the frequency that needs to monitor, this monitoring mechanism of sampling interval time PLC controller timing control according to the input carries out following operation: the PLC controller controls the sampling pump 2 to operate, the self-cleaning of the filter assembly 7 is controlled to be closed and the two electric control valves 6 are controlled to be opened simultaneously, under the action of the sampling pump 2, the sampling tube 1 extracts water samples from the waste water pipe, impurities are filtered by the filter assembly 7 and then are all returned to the waste water pipe through the return pipe 4, after the last monitoring of the water samples left on the return pipe 4 and the sampling tube 1 is emptied in a preset time, the sampling valve 5 is controlled to be opened, at the moment, most of the water samples filtered by the filter assembly 7 are returned to the waste water pipe, the rest water samples enter the water quality detector 3 to be subjected to water quality detection, after the detection time is reached, the water quality detector 3 sends detection results to the PLC controller, and meanwhile, the PLC controller controls the two controllers, the sampling pump 2 and the sampling valve 5 to be closed, and controls the filter assembly 7 to be self-cleaned, and after the preset self-cleaning time is reached, the PLC controller controls the filter assembly 7 to stop self-cleaning.

The filtering assembly 7 comprises a sand filtering tank 71, a quartz sand filtering layer 72 and a spraying layer 73 which are erected in the sand filtering tank 71 from top to bottom, a water supply tank 74, a conveying pump 75, a flushing valve 76, a suction pump 77 and a trench 78 which are arranged outside the sand filtering tank 71, wherein the suction pump 77, the flushing valve 76 and the conveying pump 75 are connected with the PLC, a flushing water outlet is formed in the top of the sand filtering tank 71, a flushing water inlet communicated with the spraying layer 73, a water filtering inlet located above the quartz sand filtering layer 72 and a water filtering outlet located below the spraying layer 73 are formed in the side wall of the sand filtering tank 71, the flushing water inlet is communicated with the water supply tank 74 through the conveying pump 75 after passing through the flushing valve 76, and the flushing water outlet is communicated with the trench 78 through the suction pump 77. When self-cleaning is needed, the PLC controller conveying pump 75, the flushing valve 76 and the suction pump 77 are opened, water in the water supply tank 74 is conveyed to the spraying layer 73 under the action of the conveying pump 75, the spraying layer 73 sprays water to the quartz sand filtering layer 72, so that filtered matters on the quartz sand filtering layer 72 are separated from the water and mixed into the water, and the water mixed with the filtered matters is conveyed into the trench 78 under the action of the suction pump 77; when self-cleaning is not required, the PLC controller delivery pump 75, flush valve 76 and suction pump 77 are shut off.

And a vibrator is arranged at the corresponding position of the outer wall of the sand filtering tank 71 and the quartz sand filtering layer 72, and the vibrator is connected with the PLC. By the arrangement, the filter material is prevented from caking on the quartz sand filtering layer 72, the self-cleaning effect is ensured, and the filtering efficiency is improved.

The water supply tank 74 is provided therein with a liquid level sensor connected to the PLC controller. By the arrangement, water in the water supply tank 74 can be timely supplied, so that the convenience in use is improved, and the self-cleaning normal operation of the filter assembly 7 is ensured.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims (4)

1. The utility model provides a quality of water on-line monitoring mechanism, its characterized in that includes sampling tube, sampling pump, water quality testing appearance, back flow, sampling valve, two automatically controlled valves, can self-cleaning filter component and with filter component the automatically controlled valve the sampling valve the water quality testing appearance with the PLC controller that the sampling pump all links to each other, two automatically controlled valve corresponds to be established the back flow with on the sampling tube, the export of sampling tube with the import of sampling pump is linked together, the export of sampling pump with filter component's drainage entry is linked together, filter component's drainage export divide two ways, one way behind the sampling valve with water quality testing appearance is linked together, and another way is linked together with the import of back flow.

2. The on-line monitoring mechanism of water quality according to claim 1, wherein the filtering assembly comprises a sand filtering tank, a quartz sand filtering layer and a spraying layer which are erected in the sand filtering tank from top to bottom, a water supply tank, a delivery pump, a flushing valve, a suction pump and a trench which are positioned outside the sand filtering tank, wherein the suction pump, the flushing valve and the delivery pump are all connected with the PLC, a flushing water outlet is arranged at the top of the sand filtering tank, a flushing water inlet communicated with the spraying layer, a water filtering inlet positioned above the quartz sand filtering layer and a water filtering outlet positioned below the spraying layer are arranged on the side wall of the sand filtering tank, the flushing water inlet is communicated with the water supply tank through the delivery pump after passing through the flushing valve, and the flushing water outlet is communicated with the trench through the suction pump.

3. The on-line monitoring mechanism of water quality according to claim 2, wherein a vibrator is arranged at a position corresponding to the outer wall of the sand filtering tank and the quartz sand filtering layer, and the vibrator is connected with the PLC.

4. The on-line water quality monitoring mechanism according to claim 2, wherein a liquid level sensor connected with the PLC is arranged in the water supply tank.