Defoaming metering device for water quality equipment

Abstract

The utility model discloses a defoaming metering device for water quality equipment, which comprises a metering container, a reaction device and at least one liquid storage container, and further comprises a liquid level monitoring device used for monitoring at least two different-height liquid levels of the metering container, the at least two different-height liquid levels comprise a target liquid level and a defoaming liquid level, the height of the defoaming liquid level is higher than that of a target liquid level; three ends of the multi-way pipeline are respectively connected with the liquid storage container, the metering container and the reaction device; the driving device is used for providing power to drive the water sample or the reagent to flow among the liquid storage container, the metering container and the reaction device through a multi-way pipeline; and the driving device and the liquid level monitoring device are electrically connected with a controller. The device has the advantages that the influence of bubbles can be reduced, and the measurement precision and reliability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water quality equipment technical field especially relates to water quality equipment is with defoaming metering device. BACKGROUND

[0002] Water quality equipment in water quality monitoring test procedure, depend on accurate volume measurement to ensure the accuracy of measurement results. The traditional water quality test method is through adding chemical reagent to water sample, makes it with measured material reaction, generates the chemical reaction product that can be measured, and then calculates the measured material concentration in raw water sample. In this process, the liquid volume measurement of water sample or reagent is very important, directly influences the concentration of chemical reaction product, and the accuracy of final measurement result.

[0003] Online water quality monitoring equipment usually adopts metering module to carry out volume measurement, and the module includes metering pipe, multi-way valve, liquid level sensor and pump and the like components. Under the action of the pump, water sample or reagent is extracted into the metering pipe, when the liquid level reaches the preset height, the pump stops running, the valve port closes, and the liquid volume of a fixed volume is completed. Subsequently, the water sample or reagent of metering completion is transferred to the reaction pool through the multi-way valve and is mixed and reacted.

[0004] However, since the liquid volume measurement of water sample or reagent is very important, directly influences the concentration of chemical reaction product, and the accuracy of final measurement result. In the process of extracting water sample or reagent, it is very likely that the gas in the pipeline, the reagent in the reagent bottle and the like are extracted into the metering pipe to form the bubbles surrounded by liquid, and the existence of these bubbles can cause the liquid volume of actual measurement to be small, and then cause the deviation of measured material concentration, influence the accuracy of test result.

[0005] How to solve the above-mentioned problems becomes a technical problem to be solved urgently. INVENTION CONTENTS

[0006] The utility model discloses a water quality equipment defoaming metering device can reduce the influence of bubble, improve the measurement precision and reliability.

[0007] To achieve the above object, the utility model adopts the following technical scheme:

[0008] The water quality equipment defoaming metering device provided by the utility model comprises a metering container, a reaction device and at least one liquid storage container, and further comprises:

[0009] A liquid level monitoring device is used to monitor the liquid level of the metering container at at least two different heights, and the at least two different heights include a target liquid level and a defoaming liquid level, wherein the height of the defoaming liquid level is higher than that of the target liquid level.

[0010] A multi-pass pipeline, three ends of which are connected with a liquid storage container, a metering container and a reaction device respectively;

[0011] A driving device for providing power to drive water samples or reagents to flow among the liquid storage container, the metering container and the reaction device through the multi-pass pipeline; and

[0012] The driving device and the liquid level monitoring device are electrically connected with a controller.

[0013] Further, the multi-pass pipeline comprises a multi-pass valve, a common pipeline and at least two valve pipelines, the multi-pass valve comprises a common port and at least two valve ports with valves, the common port is connected with the metering container through the common pipeline, the at least two valve ports are connected with the reaction device and the liquid storage container through the valve pipelines respectively, and the valves are electrically connected with the controller.

[0014] Further, the driving device comprises a pump pipeline, one end of the pump pipeline is communicated with an upper end of the metering container and the other end of the pump pipeline is communicated with the atmosphere, a pump capable of being reversed is arranged on the pump pipeline, and the pump is electrically connected with the controller.

[0015] Further, the liquid level monitoring device comprises two photoelectric liquid level sensors, the two liquid level sensors are electrically connected with the controller and are flush with target liquid levels and defoaming liquid levels respectively.

[0016] Further, the liquid level sensor comprises a light emitting source and a receiving detector, and the light emitting source and the receiving detector are oppositely arranged on two sides of the metering container.

[0017] Further, the metering container is a transparent metering pipeline, the reaction device is a digestion tank, and the pump is a peristaltic pump.

[0018] Due to the above structure, the utility model has the beneficial effects as follows:

[0019] The utility model discloses a drive device is set up, can provide power to drive the water sample or reagent in the liquid storage container to flow into the measuring pipe through the multi -way pipeline, and still can drive the water sample or reagent in the multi -way pipeline to flow back to the liquid storage container through the multi -way pipeline, repeatedly drive the water sample or reagent to flow back and forth between the measuring container and the liquid storage container multiple times, make the liquid level of measuring container to go up and down around the preset defoaming liquid level monitored by the liquid level monitoring device, can make the bubble repeatedly multiple times and the wall surface of measuring container rub, increase the probability of bubble breakage, thereby reach the effect of defoaming, and after completing defoaming, lower the liquid level in the measuring container to the preset target liquid level monitored by the liquid level monitoring device, transfer the water sample or reagent of this liquid level to the reaction device, can reduce the influence of bubble on measurement, improve the measurement accuracy and reliability.

[0020] The utility model will become clearer through the following description and combining with the drawings, these drawings are used to explain the embodiment of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only is some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0022] Figure 1 It is the whole structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model, obviously, the described embodiment only is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by ordinary skilled person in the art without making creative labor belong to the range of protection of the utility model.

[0024] Please refer to Figure 1 The water quality equipment defoaming metering device provided by the utility model includes a measuring container 1, a reaction device 7, at least one liquid storage container 8, and further includes:

[0025] The liquid level monitoring device is used for monitoring liquid levels at at least two different heights of the metering container 1, the at least two different heights of the liquid levels including a target liquid level and a defoaming liquid level, wherein the height of the defoaming liquid level is higher than the height of the target liquid level, so that water samples or reagents and air bubbles surrounded by the water samples or reagents which need to be transferred can be all sucked into the metering container 1, and the air bubbles have an opportunity to float above the liquid surface and break after friction;

[0026] The multi-pass pipeline has three ends connected with the liquid storage container 8, the metering container 1 and the reaction device 7 respectively, so that the water samples or reagents can flow freely between the liquid storage container 8 and the metering container 1 and between the metering container 1 and the reaction device 7.

[0027] The driving device is used for providing power to drive the water samples or reagents to flow between the liquid storage container 8, the metering container 1 and the reaction device 7 through the multi-pass pipeline.

[0028] The driving device and the liquid level monitoring device are electrically connected with a controller, and the controller controls the action of the driving device according to the signals sent by the liquid level monitoring device.

[0029] In use, the driving device provides power to drive the water samples or reagents in the liquid storage container 8 to flow into the metering container through the multi-pass pipeline until the liquid level of the metering container reaches the preset defoaming liquid level, and then the driving device drives the liquid level of the metering container to rise and fall repeatedly near the defoaming liquid level, so that the air bubbles can rub against the wall of the metering container repeatedly, the probability of the air bubbles breaking is increased, and the defoaming effect is achieved.

[0030] In the utility model, the multi-pass pipeline includes a multi-pass valve 2, a common pipe 5 and at least two valve pipes 9, the multi-pass valve 2 includes a common port and at least two valve ports with valves, wherein the common port is connected with the metering container 1 through the common pipe 5, the at least two valve ports with valves are connected with the reaction device 7 and the liquid storage container 8 through the valve pipes 9 respectively, and the valves are electrically connected with the controller.

[0031] Optionally, the number of the liquid storage containers 8 is multiple, for storing different water samples or reagents, and the number of the valve pipes 9 and the number of the valve ports with valves are also multiple, which can improve the efficiency of pumping different water samples or reagents.

[0032] In the utility model, the driving device includes pump pipe 6, one end of pump pipe 6 is communicated with the upper end of metering container 1 and the other end of pump pipe 6 is communicated with atmosphere, and pump 4 capable of forward and reverse rotation is arranged on pump pipe 6, and pump 4 is electrically connected with controller.When the controller controls pump 4 to rotate forward, the gas in metering container 1 can be pumped out to the outside, thereby generating negative pressure to suck water sample or reagent into metering container 1, or making the liquid level in metering container 1 rise; when pump 4 reverses, the gas in the outside can be pumped into metering container 1, thereby increasing the air pressure in metering container 1, driving water sample or reagent to flow back to liquid storage container 8 to reduce the liquid level of metering container 1, or driving water sample or reagent to flow into reaction device 7.

[0033] In the utility model, the liquid level monitoring device includes two photoelectric liquid level sensors 3, both liquid level sensors 3 are electrically connected with controller and both liquid level sensors 3 are flush with target liquid level and defoaming liquid level respectively, thereby monitoring two liquid levels through both liquid level sensors 3.

[0034] In the utility model, the liquid level sensor 3 includes emitting light source 301 and receiving probe 302, emitting light source 301 and receiving probe 302 are oppositely arranged on both sides of metering container 1, and both are opposite and at the same horizontal height. The light emitted by emitting light source 301 enters metering container 1 and is refracted by the liquid in metering container 1, the light signal detected by receiving probe 302 changes, the electric signal also changes, and the controller receives the change of electric signal, thereby sensing that the liquid level has reached the set horizontal height.

[0035] In the utility model, metering container 1 is transparent metering pipe, for example, metering container 1 is transparent glass pipe, thereby enabling the light emitted by emitting light source 301 to be able to penetrate metering container 1; reaction device 7 is digestion tank, and pump 4 is peristaltic pump.

[0036] The utility model discloses a kind of liquid level sensor and reaction device, the utility model discloses a kind of liquid level sensor and reaction device, which belongs to the technical field of liquid level sensor and reaction device, and it is characterized by comprising liquid level sensor 3, reaction device 7, pump 4, common pipe 5, multiple-way valve 2, valve pipe 9, storage container 8 and metering container 1.

[0037] The above preferred embodiments of the present application are described. It should be understood that the present application is not limited to the specific embodiments described above, and that devices and structures not fully described should be understood as being implemented in a conventional manner in the art. Any person skilled in the art, without departing from the scope of the present application, can make many possible changes and modifications to the present application using the disclosed methods and technical content, or modify equivalent embodiments, which do not affect the essential content of the present application. Therefore, any simple modification, equivalent change and modification of the above embodiments made in accordance with the technical essence of the present application, without departing from the scope of the present application, are still within the scope of protection of the present application.

Claims

1. A defoaming metering device for water quality apparatuses, comprising a metering vessel (1), a reaction device (7), at least one liquid storage vessel (8), characterized in that, Also included are: a liquid level monitoring device for monitoring the liquid level of the metering container (1) at at least two different heights, the at least two different heights including a target liquid level and a defoaming liquid level, wherein the height of the defoaming liquid level is higher than the height of the target liquid level; a multi-pass pipeline, three ends of which are respectively connected to the liquid storage container (8), the metering container (1), and the reaction device (7); a driving device for providing power to drive the water sample or reagent to flow between the liquid storage container (8), the metering container (1), and the reaction device (7) through the multi-pass pipeline; and the driving device and the liquid level monitoring device are electrically connected to a controller.

2. The defoaming metering device for water quality equipment according to claim 1, characterized by: The multi-pass pipeline includes a multi-pass valve (2), a common pipe (5), and at least two valve pipes (9). The multi-pass valve (2) includes a common port and at least two valve ports with valves. The common port is connected to the metering container (1) through the common pipe (5), the at least two valve ports with valves are respectively connected to the reaction device (7) and the liquid storage container (8) through the valve pipes (9), and the valves are electrically connected to the controller.

3. The defoaming metering device for water quality equipment according to claim 1, characterized by: The driving device includes a pump pipe (6), one end of which is in communication with the upper end of the metering container (1) and the other end of which is in communication with the atmosphere, and a pump (4) capable of forward and reverse rotation is arranged on the pump pipe (6), and the pump (4) is electrically connected to the controller.

4. The defoaming metering device for water quality equipment according to claim 2 or 3, characterized by: The liquid level monitoring device includes two photoelectric liquid level sensors (3), both of which are electrically connected to the controller and are flush with the target liquid level and the defoaming liquid level, respectively.

5. The defoaming metering device for water quality equipment according to claim 4, characterized by: The liquid level sensor (3) includes a light emitting source (301) and a receiving detector (302), which are oppositely arranged on both sides of the metering container (1).

6. The defoaming metering device for water quality equipment according to claim 3, characterized by: The metering container (1) is a transparent metering pipe, the reaction device (7) is a digestion tank, and the pump (4) is a peristaltic pump.

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