CN219657288U - Pretreatment device for circulating oscillation water sample - Google Patents

Abstract

The utility model relates to the technical field of water sample treatment, and provides a pretreatment device for a circulating oscillation water sample, which comprises a water storage container, wherein a first filter element and a second filter element are arranged in the water storage container; a gas delivery assembly adapted to deliver gas to the water reservoir; the water pumping assembly is suitable for pumping the water sample in the water storage container into the sampling cup; the gas delivery assembly, the pumping assembly, the first filtering piece and the second filtering piece are respectively connected with the switching valve assembly, the switching valve assembly is in a first state, the gas delivery assembly is communicated with the first filtering piece, the pumping assembly is communicated with the second filtering piece, in a second state, the gas delivery assembly is communicated with the second filtering piece, and the pumping assembly is communicated with the first filtering piece. According to the pretreatment device for the circulating oscillation water sample, which is disclosed by the embodiment of the utility model, the accuracy of water quality monitoring is improved, the condition that a filter assembly is blocked can be effectively avoided, the cleaning frequency of the filter assembly is reduced, the workload of staff is reduced, and the service life of the filter assembly is prolonged.

Description

Pretreatment device for circulating oscillation water sample

Technical Field

The utility model relates to the technical field of water sample treatment, in particular to a pretreatment device for a circulating oscillation water sample.

Background

In the water quality analysis and monitoring process, sediment, clay and other impurities in water can cause errors in measurement results, and damage rate of monitoring equipment can be increased, so that service life is prolonged. Therefore, before water quality monitoring devices such as an online water quality monitor and the like analyze and detect a water sample, the water sample is generally pretreated so as to remove impurities in the water sample.

Traditional water sample pretreatment is mainly realized by long-time precipitation or filtration, but the following problems exist:

1. compounds in the water sample which can influence the water quality detection result are easy to be attached to impurities such as sediment, and the measurement result is inaccurate as the impurities such as sediment are filtered;

2. the filter element will appear blocking up after using for a period of time, leads to the unable normal operating of device, needs the staff frequent to wash filter element, has increased work load, has reduced filter element's life.

Disclosure of Invention

The present utility model is directed to solving at least one of the technical problems existing in the related art. Therefore, the pretreatment device for the circulating oscillation water sample can effectively prevent compounds from adhering to impurities such as sediment, improves the accuracy of water quality monitoring, can effectively avoid the condition that a filter assembly is blocked, reduces the cleaning frequency of the filter assembly, reduces the workload of staff, and prolongs the service life of the filter assembly.

According to the embodiment of the utility model, the pretreatment device for the circulating oscillation water sample comprises:

the water storage container is used for storing water samples, and at least one first filter piece and at least one second filter piece are arranged in the water storage container;

a gas delivery assembly adapted to deliver gas to the water reservoir;

the water pumping assembly is suitable for pumping the water sample in the water storage container into the sampling cup;

the switching valve assembly, the gas delivery assembly, the pumping assembly, the first filter and the second filter are respectively connected with the switching valve assembly, the switching valve assembly can be switched between a first state and a second state, wherein in the first state, the gas delivery assembly is communicated with the first filter, the pumping assembly is communicated with the second filter, in the second state, the gas delivery assembly is communicated with the second filter, and the pumping assembly is communicated with the first filter.

According to the pretreatment device for the circulating oscillation water sample, which is disclosed by the embodiment of the utility model, the water sample to be monitored is stored in the water storage container, the switching valve assembly is controlled to switch between the first state and the second state, when the switching valve assembly is in the first state, the gas conveying assembly is communicated with the first filter element, the water pumping assembly is communicated with the second filter element, at the moment, the gas conveying assembly and the water pumping assembly are controlled to start working, the gas conveying assembly conveys gas to the first filter element, continuous multi-strand pressure bubbles can be formed when the gas is conveyed to the water storage container along the first filter element, and the pressure bubbles can repeatedly purge impurities such as particles in the water sample, so that the compounds attached to the impurities such as the particles fall off. The water pumping assembly is used for pumping the water sample in the water storage container into the sampling cup through the second filtering piece, and when the water sample flows into the sampling cup along the second filtering piece, the second filtering piece can filter out impurities such as particulate matters, and the compounds falling off from the impurities such as the particulate matters flow into the sampling cup along with the water flow.

Then control the switching valve subassembly and switch over from the first state to the second state, gas delivery subassembly and second filter intercommunication this moment, the subassembly that draws water and first filter intercommunication, gas delivery subassembly carries gas to the water storage container through the second filter, continues to blow away impurity such as particulate matter in the water sample to blow away the second filter with the impurity that blocks up in second filter department simultaneously. The water pumping assembly then pumps the water sample through the first filter element into the sampling cup. Furthermore, the pretreatment device for the circulating oscillation water sample can effectively prevent compounds from adhering to impurities such as sediment, improves accuracy of water quality monitoring, can effectively avoid the condition that a filter assembly is blocked, reduces cleaning frequency of the filter assembly, reduces workload of staff, and prolongs service life of the filter assembly.

According to one embodiment of the utility model, the switching valve assembly comprises a first switching valve and a second switching valve, wherein a first end of the first switching valve is connected with the first filtering component, a second end of the first switching valve is connected with the gas conveying component, a third end of the first switching valve is connected with the pumping component, a first end of the second switching valve is connected with the second filtering component, a second end of the second switching valve is connected with the gas conveying component, and a third end of the second switching valve is connected with the pumping component.

According to one embodiment of the utility model, the gas delivery assembly comprises an air compressor and a pressure regulating valve which are sequentially connected, wherein the outlet of the pressure regulating valve is respectively connected with the first switching valve and the second switching valve through a pipeline, a pressure sensor is arranged at the pipeline, and the pressure sensor is suitable for detecting the gas pressure in the pipeline.

According to one embodiment of the utility model, the pumping assembly comprises a pumping pump, the third end of the first switching valve and the third end of the second switching valve are connected with the first end of the pumping pump, and the second end of the pumping pump is communicated with the sampling cup.

According to one embodiment of the present utility model, the switching valve assembly includes a third switching valve, a fourth switching valve, a fifth switching valve and a sixth switching valve, the third switching valve connects the first filter and the gas delivery assembly, the fourth switching valve connects the first filter and the water pumping assembly, the fifth switching valve connects the second filter and the gas delivery assembly, and the sixth switching valve connects the second filter and the water pumping assembly.

According to one embodiment of the utility model, the pretreatment device for the circulating oscillation water sample comprises a control module, and the gas conveying assembly, the pumping assembly and the switching valve assembly are respectively connected with the control module.

According to one embodiment of the utility model, a turbidity sensor is arranged in the water storage container, the turbidity sensor is connected with the control module, and the turbidity sensor is suitable for detecting the turbidity value of the solution in the water storage container so as to determine the time for the gas delivery assembly to deliver gas to the water storage container;

and/or the number of the groups of groups,

the sampling cup is internally provided with a first liquid level meter, the first liquid level meter is connected with the control module, and the first liquid level meter is suitable for detecting the liquid level height in the sampling cup.

According to one embodiment of the utility model, the pretreatment device for the circulating oscillation water sample comprises a water sampling assembly, wherein the water sampling assembly is communicated with the water storage container, the water sampling assembly is connected with the control module, and the water sampling assembly is suitable for conveying the water sample into the water storage container.

According to one embodiment of the utility model, the water collection assembly comprises a water collection pump and a water collection valve, wherein the water collection pump is communicated with the water inlet end of the water collection valve, and the water outlet end of the water collection valve is communicated with the water storage container.

According to one embodiment of the utility model, a second level gauge is provided in the water storage container, the second level gauge being connected to the control module, the second level gauge being adapted to detect the level of the liquid in the water storage container.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic structural diagram of a pretreatment device for circulating oscillation water samples, which is provided by the embodiment of the utility model;

FIG. 2 is a schematic diagram of a pretreatment apparatus for circulating oscillating water samples according to an embodiment of the present utility model.

Reference numerals:

1. a water storage container; 2. a gas delivery assembly; 3. a water pumping assembly; 4. a sampling cup;

5. a switching valve assembly; 6. a water collection assembly; 11. a first filter; 12. a second filter;

13. a turbidity sensor; 14. a second level gauge; 21. an air compressor; 22. a pressure regulating valve;

23. a pressure sensor; 31. a water pump; 41. a first level gauge; 51. a first switching valve;

52. a second switching valve; 53. a third switching valve; 54. a fourth switching valve; 55. a fifth switching valve;

56. a sixth switching valve; 61. a water collecting pump; 62. and a water collecting valve.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

A pretreatment device for circulating oscillating water samples according to the present utility model is described below with reference to fig. 1 and 2.

According to an embodiment of the present utility model, as shown in fig. 1, a pretreatment device for a circulating oscillation water sample includes:

the water storage container 1, the gas delivery assembly 2, the pumping assembly 3 and the switching valve assembly 5 are used for storing water samples, at least one first filtering piece 11 and at least one second filtering piece 12 are arranged in the water storage container 1, the gas delivery assembly 2 is suitable for delivering gas to the water storage container 1, the pumping assembly 3 is suitable for pumping the water samples in the water storage container 1 into the sampling cup 4, the switching valve assembly 5, the gas delivery assembly 2, the pumping assembly 3, the first filtering piece 11 and the second filtering piece 12 are respectively connected with the switching valve assembly 5, the switching valve assembly 5 can be switched between a first state and a second state, wherein in the first state, the gas delivery assembly 2 is communicated with the first filtering piece 11, the pumping assembly 3 is communicated with the second filtering piece 12, in the second state, the gas delivery assembly 2 is communicated with the second filtering piece 12, and the pumping assembly 3 is communicated with the first filtering piece 11.

According to the pretreatment device for circulating oscillation water samples, the water samples to be monitored are stored in the water storage container 1, the switching valve assembly 5 is controlled to switch between a first state and a second state, when the switching valve assembly 5 is in the first state, the gas conveying assembly 2 is communicated with the first filtering piece 11, the water pumping assembly 3 is communicated with the second filtering piece 12, at the moment, the gas conveying assembly 2 and the water pumping assembly 3 are controlled to start working, the gas conveying assembly 2 conveys gas to the first filtering piece 11, when the gas is conveyed to the water storage container 1 along the first filtering piece 11, a plurality of continuous belt pressure bubbles are formed, and the belt pressure bubbles can repeatedly purge impurities such as particles in the water samples, so that the compounds attached to the impurities such as the particles fall off. The water pumping assembly 3 pumps the water sample in the water storage container 1 into the sampling cup 4 through the second filter element 12, and when the water sample flows into the sampling cup 4 along the second filter element 12, the second filter element 12 can filter out impurities such as particles, and the compounds falling off from the impurities such as particles flow into the sampling cup 4 along with the water flow.

Then the switching valve assembly 5 is controlled to switch from the first state to the second state, at the moment, the gas conveying assembly 2 is communicated with the second filter element 12, the water pumping assembly 3 is communicated with the first filter element 11, the gas conveying assembly 2 conveys gas into the water storage container 1 through the second filter element 12, purging of impurities such as particulate matters in the water sample is continued, and meanwhile, the impurities blocked at the second filter element 12 are blown away from the second filter element 12. The water pumping assembly 3 then pumps the water sample through the first filter element 11 into the sampling cup 4. Furthermore, the pretreatment device for the circulating oscillation water sample can effectively prevent compounds from adhering to impurities such as sediment, improves accuracy of water quality monitoring, can effectively avoid the condition that a filter assembly is blocked, reduces cleaning frequency of the filter assembly, reduces workload of staff, and prolongs service life of the filter assembly.

Compared with the method for removing impurities through long-time precipitation in the related art, the method for removing impurities by using the gas purging and filtering method has the advantages that when gas is conveyed to the water storage container 1 along the first filtering piece 11 or the second filtering piece 12, continuous multi-strand gas bubbles can be formed, the gas bubbles with pressure can cut up impurities such as particles and repeatedly purge and shake the impurities such as the particles in a water sample, the impurities can be removed more effectively, the turbidity value of the treated water sample can meet the sampling requirement of a water quality monitoring instrument, and the instrument cannot be influenced. And the utility model uses the first filter element 11 and the second filter element 12 to convey gas into the water storage container 1 in turn, and when one of the first filter element 11 and the second filter element 12 is used for conveying gas, the other filter element is matched with the water pumping assembly 3, so that the water pumping assembly 3 can pump the water sample in the water storage container 1 into the sampling cup 4. The first filter piece 11 and the second filter piece 12 are used for conveying gas and filtering water samples in turn, and the water sample in the water storage container 1 can be flushed by recycling the first filter piece 11 and the second filter piece 12, so that the water sample in the water storage container 1 is circularly oscillated.

In the embodiment of the present utility model, the water storage container 1 is, for example, a water tank or a pool. It should be appreciated that the water reservoir 1 may be any other suitable component having a water storage function.

In one embodiment of the utility model, the pretreatment device for circulating oscillation water sample comprises a control module, and the gas conveying assembly 2, the water pumping assembly 3 and the switching valve assembly 5 are respectively connected with the control module. The working states of the gas conveying component 2, the water pumping component 3 and the switching valve component 5 can be automatically adjusted through the control module, and the degree of automation of the pretreatment device for circulating oscillation water samples is improved.

In an embodiment of the present utility model, the control module is, for example, a control circuit board or a PLC controller. It should be appreciated that the control module may be any other suitable element having control functionality.

In one embodiment of the present utility model, as shown in fig. 1, the switching valve assembly 5 includes a first switching valve 51 and a second switching valve 52, a first end of the first switching valve 51 is connected to the first filter 11, a second end of the first switching valve 51 is connected to the gas delivery assembly 2, a third end of the first switching valve 51 is connected to the pumping assembly 3, a first end of the second switching valve 52 is connected to the second filter 12, a second end of the second switching valve 52 is connected to the gas delivery assembly 2, and a third end of the second switching valve 52 is connected to the pumping assembly 3.

In the first state, the gas delivery assembly 2 communicates with the first filter element 11 through the first switching valve 51 and the pumping assembly 3 communicates with the second filter element 12 through the second switching valve 52. At this time, the gas delivery assembly 2 delivers the gas to the first filter 11 through the first switching valve 51, so that the gas is delivered from the first filter 11 into the water storage container 1 to flush impurities such as particulate matters in the water sample. The water pumping assembly 3 pumps the water sample in the water storage container 1 into the sampling cup 4 through the second switching valve 52 and the second filter element 12.

In the second state, the gas delivery assembly 2 communicates with the second filter element 12 through the second switching valve 52 and the water pumping assembly 3 communicates with the first filter element 11 through the first switching valve 51. At this time, the gas delivery assembly 2 delivers the gas to the second filter element 12 through the second switching valve 52, so that the gas is delivered from the second filter element 12 into the water storage container 1, and impurities such as particulate matters in the water sample are washed. The water pumping assembly 3 pumps the water sample in the water storage container 1 into the sampling cup 4 through the first switching valve 51 and the first filter 11. And then through setting up first switching valve 51 and second switching valve 52 for switching valve subassembly 5 can switch between first state and second state, make the preprocessing device of circulation concussion water sample wash the impurity in the water sample through one of first filter 11 and second filter 12, in carrying sample cup 4 through another water sample, and then can effectually prevent that the compound from adhering to impurity such as silt, improved the accuracy of water quality monitoring, can effectually avoid filter assembly to appear the condition of jam.

In the embodiment of the present utility model, as shown in fig. 1, the first switching valve 51 and the second switching valve 52 are, for example, three-way regulating valves. The connection relationship and principle when the first switching valve 51 is a three-way regulating valve are described below: the first end of the three-way regulating valve is connected with the first filtering piece 11, the second end of the three-way regulating valve is connected with the gas conveying component 2, and the third end of the three-way regulating valve is connected with the water pumping component 3.

Because the three-way regulating valve is respectively connected with the first filter element 11, the gas conveying component 2 and the water pumping component 3, the three-way regulating valve can be in a state that the gas conveying component 2 is communicated with the first filter element 11 and the water pumping component 3 is not communicated with the first filter element 11 or in a state that the water pumping component 3 is communicated with the first filter element 11 and the gas conveying component 2 is not communicated with the first filter element 11 by regulating the opening and closing states of the three-way regulating valve. When the gas delivery assembly 2 is in communication with the first filter element 11, gas is delivered to the water reservoir 1 through the first filter element 11, and when the water pumping assembly 3 is in communication with the first filter element 11, water sample is pumped into the sampling cup 4 through the first filter element 11. The first filter 11 can be switched between the gas conveying channel and the liquid conveying channel, when the first filter 11 is used as the liquid conveying channel, a water sample can be filtered, and when the first filter 11 is used as the gas conveying channel, the first filter 11 can enable gas to be changed into bubbles and then conveyed into the water sample, and then impurities such as particles in the water sample can be washed.

The structure and function of the second switching valve 52 are the same as those of the first switching valve 51, and a repetitive description thereof will not be given here.

It should be noted that the three-way regulating valve can be connected with the control module, and the control module controls the three-way regulating valve to carry out corresponding regulation. The three-way regulating valve can also be regulated manually.

In one embodiment of the present utility model, as shown in fig. 2, the switching valve assembly 5 includes a third switching valve 53, a fourth switching valve 54, a fifth switching valve 55, and a sixth switching valve 56, the third switching valve 53 connecting the first filter 11 and the gas delivery assembly 2, the fourth switching valve 54 connecting the first filter 11 and the water pumping assembly 3, the fifth switching valve 55 connecting the second filter 12 and the gas delivery assembly 2, and the sixth switching valve 56 connecting the second filter 12 and the water pumping assembly 3.

The third switching valve 53 and the sixth switching valve 56 are controlled to be opened, the fourth switching valve 54 and the fifth switching valve 55 are controlled to be closed, at this time, the gas delivery assembly 2 is communicated with the first filter 11 through the third switching valve 53, and the water pumping assembly 3 is communicated with the second filter 12 through the sixth switching valve 56. The gas conveying component 2 can convey gas to the first filter element 11 through the third switching valve 53, so that the gas is conveyed into the water storage container 1 from the first filter element 11, back flushing of the first filter element 11 through the gas is achieved, impurities remained in the first filter element 11 can be flushed into the water storage container 1, water sample treatment precision is improved, and dense bubbles generated by back flushing can be used for carrying out homogenization oscillation treatment on the water sample in the water storage container 1. The water pumping assembly 3 can pump the water sample in the water storage container 1 into the sampling cup 4 through the sixth switching valve 56 and the second filtering piece 12, the second filtering piece 12 filters the water sample flowing into the sampling cup 4, impurities such as particles are prevented from being pumped into the sampling cup 4, at the moment, the water sample in the water storage container 1 is subjected to uniform vibration treatment, and the compounds with influence on detection cannot remain on the impurities, namely, the second filtering piece 12 filters the water sample, the compounds cannot be filtered, and further the accuracy of monitoring the subsequent water sample is ensured.

After a certain time, the fourth switching valve 54 and the fifth switching valve 55 are controlled to be opened, the third switching valve 53 and the sixth switching valve 56 are controlled to be closed, at this time, the gas delivery assembly 2 is communicated with the second filter element 12 through the fifth switching valve 55, and the water pumping assembly 3 is communicated with the first filter element 11 through the fourth switching valve 54. The gas conveying component 2 can convey gas to the second filter element 12 through the fifth switching valve 55, the gas is conveyed to the water storage container 1 along the second filter element 12, the back flushing of the second filter element 12 through the gas is realized, impurities remained in the second filter element 12 can be flushed into the water storage container 1, the water sample treatment precision is improved, and dense chess and cards generated by the back flushing can continuously perform homogenization vibration treatment on the water sample in the water storage container 1. The water pumping assembly 3 pumps the water sample in the water storage container 1 into the sampling cup 4 through the fourth switching valve 54 and the first filtering piece 11, the first filtering piece 11 filters the water sample, impurities such as particulate matters are prevented from being pumped into the sampling cup 4, the water sample in the water storage container 1 is still subjected to uniform vibration treatment, the compounds affecting detection cannot be remained on the impurities, namely the first filtering piece 11 filters the water sample, the compounds cannot be filtered, and further the accuracy of monitoring the subsequent water sample is ensured.

The utility model realizes the back flushing treatment of the first filter element 11 and the second filter element 12 in turn by controlling the opening and closing states of the third switching valve 53, the fourth switching valve 54, the fifth switching valve 55 and the sixth switching valve 56, realizes the filtration of the water sample extracted into the sampling cup 4 by the first filter element 11 and the second filter element 12 in turn, effectively increases the field single-time working time and the working life of the pretreatment device for circulating oscillation water sample, and reduces the workload of operation and maintenance personnel.

In the embodiment of the present utility model, the third switching valve 53, the fourth switching valve 54, the fifth switching valve 55 and the sixth switching valve 56 are, for example, two-way regulating valves, one end of the third switching valve 53 is communicated with the first filter 11, the other end of the third switching valve 53 is communicated with the gas delivery assembly 2, wherein one end of the fourth switching valve 54 is communicated with the first filter 11, the other end of the fourth switching valve 54 is communicated with the pumping assembly 3, one end of the fifth switching valve 55 is communicated with the second filter 12, the other end of the fifth switching valve 55 is communicated with the gas delivery assembly 2, one end of the sixth switching valve 56 is communicated with the second filter 12, and the other end of the sixth switching valve 56 is communicated with the pumping assembly 3. It should be appreciated that the third, fourth, fifth and sixth switching valves 53, 54, 55, 56 may be any other suitable communication valve configuration.

In one embodiment of the present utility model, as shown in fig. 1, the gas delivery assembly 2 includes an air compressor 21 and a pressure regulating valve 22 connected in sequence, and an outlet of the pressure regulating valve 22 is connected to a first switching valve 51 and a second switching valve 52 through a pipe, respectively, where a pressure sensor 23 is provided, and the pressure sensor 23 is adapted to detect the gas pressure in the pipe.

The air compressor 21 generates compressed air, and the compressed air is conveyed to the first switching valve 51 or the second switching valve 52 along a pipeline after passing through the pressure regulating valve 22, so that the compressed air can be conveyed into the water storage container 1 through the first filter 11 or the second filter 12, and the impurities in the water sample are purged and oscillated. The pressure sensor 23 can detect the air pressure in the pipeline in real time, and then the air pressure of the air conveyed into the water sample can be known through the pressure sensor 23.

At this time, the worker can know the air pressure of the air by observing the detection value of the pressure sensor 23, and then can adjust the adjusting valve according to the air pressure value, or adjust the working power of the air compressor 21, so that the air pressure of the air in the water sample meets the requirement. The pressure sensor 23, the pressure regulating valve 22 and the air compressor 21 can be respectively connected with a control module, and the opening degree of the pressure regulating valve 22 or the working power of the air compressor 21 can be automatically controlled by the control module, so that the air pressure of the gas conveyed into the water sample meets the requirement.

In one embodiment of the present utility model, as shown in fig. 1, the pumping assembly 3 includes a pumping pump 31, a third end of a first switching valve 51 and a third end of a second switching valve 52 are connected to a first end of the pumping pump 31, and a second end of the pumping pump 31 is in communication with the sampling cup 4.

The water pump 31 is connected to the first filter 11 through the first switching valve 51, and the water pump 31 pumps the water sample in the water reservoir 1 to the sampling cup 4 through the first switching valve 51 and the first filter 11. When the second switching valve 52 is communicated with the water suction pump 31 and the second filter element 12, the water suction pump 31 pumps the water sample in the water storage container 1 into the sampling cup 4 through the second switching valve 52 and the second filter element 12, so that the water pumping operation by alternately using the first filter element 11 and the second filter element 12 is realized.

In one embodiment of the present utility model, as shown in fig. 1, a turbidity sensor 13 is provided in the water storage container 1, the turbidity sensor 13 is connected to the control module, and the turbidity sensor 13 is adapted to detect the turbidity value of the solution in the water storage container 1 to determine the time when the gas delivery assembly delivers gas to the water storage container.

The turbidity sensor 13 detects the turbidity value of the water sample in the water storage container 1 in real time and transmits detection data to the control module, the control module controls the air blowing time of the gas conveying component 2 according to the turbidity value of the water sample, the greater the turbidity value of the water sample is, the longer the time of the gas conveying component 2 for conveying the gas to the water storage container 1 is controlled, and then the water sample can be sufficiently purged and oscillated, so that the turbidity value of the water sample pumped into the sampling cup 4 by the water pumping component 3 is ensured to meet the requirement, and the detection accuracy is improved.

In one embodiment of the utility model, as shown in fig. 1, a first level gauge 41 is provided in the sampling cup 4, the first level gauge 41 being connected to the control module, the first level gauge 41 being adapted to detect the level of liquid in the sampling cup 4.

The first liquid level meter 41 detects the liquid level height in the sampling cup 4 in real time and transmits detection data to the control module, when the liquid level height in the sampling cup 4 reaches a preset value, the control module controls the gas conveying assembly 2 and the water pumping assembly 3 to stop working, so that the degree of automation of the pretreatment device for circulating oscillation water samples is improved, and excessive overflow of the water samples in the sampling cup 4 can be avoided.

In one embodiment of the utility model, as shown in fig. 1, the pretreatment device for circulating oscillation water samples comprises a water sampling assembly 6, wherein the water sampling assembly 6 is communicated with a water storage container 1, the water sampling assembly 6 is connected with a control module, and the water sampling assembly 6 is suitable for conveying the water samples into the water storage container 1.

One end of the water sampling component 6 is placed at the sampling position, the other end of the water sampling component is communicated with the water storage container 1, then the control module controls the water sampling component 6 to start working, and the water sampling component 6 conveys water at the sampling position to the water storage container 1, so that automatic acquisition of a water sample is realized.

In the embodiment of the present utility model, as shown in fig. 1, the water collection assembly 6 includes a water collection pump 61 and a water collection valve 62, the water collection pump 61 is communicated with the water inlet end of the water collection valve 62, and the water outlet end of the water collection valve 62 is communicated with the water storage container 1.

The water sampling pump 61 pumps the water at the sampling position to the water sampling valve 62 through a water pipe or a similar component, so that the water flows into the water storage container 1 along the water sampling valve 62, the water sample is automatically conveyed into the water storage container 1, and the degree of automation of the pretreatment device for circulating oscillation water sample is improved.

In one embodiment of the utility model, as shown in fig. 1, a second level gauge 14 is provided in the water reservoir 1, the second level gauge 14 being connected to the control module, the second level gauge 14 being adapted to detect the level of the liquid in the water reservoir 1.

The second liquid level meter 14 detects the liquid level height in the water storage container 1 in real time and transmits detection data to the control module, when the liquid level height in the water storage container 1 reaches a preset value, the control module controls the water sampling assembly 6 to stop conveying water samples into the water storage container 1, so that excessive overflow of the water samples in the water storage container 1 can be avoided, and the degree of automation of the pretreatment device for circularly oscillating the water samples is improved.

Finally, it should be noted that the above-mentioned embodiments are merely illustrative of the utility model, and not limiting. While the utility model has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions can be made to the technical solutions of the present utility model without departing from the spirit and scope of the technical solutions of the present utility model, and it is intended to be covered by the scope of the claims of the present utility model.

Claims (10)

1. A pretreatment device for circulating oscillation water sample, which is characterized by comprising:

the water storage container is used for storing water samples, and at least one first filter piece and at least one second filter piece are arranged in the water storage container;

a gas delivery assembly adapted to deliver gas to the water reservoir;

the water pumping assembly is suitable for pumping the water sample in the water storage container into the sampling cup;

the gas delivery assembly, the pumping assembly, the first filter piece and the second filter piece are respectively connected with the switching valve assembly, and the switching valve assembly can be switched between a first state and a second state; wherein, in the first state, the gas delivery assembly with first filter intercommunication, the subassembly that draws water with second filter intercommunication, in the second state, the gas delivery assembly with second filter intercommunication, the subassembly that draws water with first filter intercommunication.

2. The pretreatment device for circulating oscillation water samples according to claim 1, wherein the switching valve assembly comprises a first switching valve and a second switching valve, a first end of the first switching valve is connected with the first filtering member, a second end of the first switching valve is connected with the gas conveying assembly, a third end of the first switching valve is connected with the pumping assembly, a first end of the second switching valve is connected with the second filtering member, a second end of the second switching valve is connected with the gas conveying assembly, and a third end of the second switching valve is connected with the pumping assembly.

3. The pretreatment device for circulating oscillation water samples according to claim 2, wherein the gas conveying assembly comprises an air compressor and a pressure regulating valve which are sequentially connected, an outlet of the pressure regulating valve is respectively connected with the first switching valve and the second switching valve through pipelines, a pressure sensor is arranged at the pipeline, and the pressure sensor is suitable for detecting the air pressure in the pipeline.

4. The pretreatment device for circulating oscillation water samples according to claim 2, wherein the water pumping assembly comprises a water pumping pump, the third end of the first switching valve and the third end of the second switching valve are both connected with the first end of the water pumping pump, and the second end of the water pumping pump is communicated with the sampling cup.

5. The pretreatment device for circulating oscillation water samples according to claim 1, wherein the switching valve assembly comprises a third switching valve, a fourth switching valve, a fifth switching valve and a sixth switching valve, the third switching valve is connected with the first filtering piece and the gas conveying assembly, the fourth switching valve is connected with the first filtering piece and the water pumping assembly, the fifth switching valve is connected with the second filtering piece and the gas conveying assembly, and the sixth switching valve is connected with the second filtering piece and the water pumping assembly.

6. A device for pre-treating a circulating concussive water sample according to any one of claims 1 to 5 wherein the device comprises a control module, the gas delivery assembly, pumping assembly and switching valve assembly being connected to the control module respectively.

7. The pretreatment device for circulating concussion water samples as claimed in claim 6, wherein:

a turbidity sensor is arranged in the water storage container and is connected with the control module, and the turbidity sensor is suitable for detecting the turbidity value of the solution in the water storage container so as to determine the time for the gas conveying assembly to convey the gas to the water storage container;

and/or the number of the groups of groups,

the sampling cup is internally provided with a first liquid level meter, the first liquid level meter is connected with the control module, and the first liquid level meter is suitable for detecting the liquid level height in the sampling cup.

8. The pretreatment device for circulating oscillation water samples according to claim 6, wherein the pretreatment device for circulating oscillation water samples comprises a water sampling assembly, the water sampling assembly is communicated with the water storage container, the water sampling assembly is connected with the control module, and the water sampling assembly is suitable for conveying water samples into the water storage container.

9. The pretreatment device for circulating oscillation water samples of claim 8, wherein the water collection assembly comprises a water collection pump and a water collection valve, the water collection pump is communicated with a water inlet end of the water collection valve, and a water outlet end of the water collection valve is communicated with the water storage container.

10. The pretreatment device for circulating oscillation water samples according to claim 6, wherein a second liquid level meter is arranged in the water storage container, the second liquid level meter is connected with the control module, and the second liquid level meter is suitable for detecting the liquid level height in the water storage container.