CN106908278B

CN106908278B - Water quality sampling device

Info

Publication number: CN106908278B
Application number: CN201710165631.2A
Authority: CN
Inventors: 林方杰
Original assignee: Funan Jinyue Information Technology Co Ltd
Current assignee: Hubei Chuanzheng Inspection And Testing Co ltd
Priority date: 2017-03-20
Filing date: 2017-03-20
Publication date: 2020-12-25
Anticipated expiration: 2037-03-20
Also published as: CN106908278A

Abstract

The invention relates to the field of water quality sampling equipment, in particular to a water quality sampling device, which comprises a shell, a control unit, an indicating unit, a vacuum pump, a sampling unit, a heating unit and a rainwater collecting unit, wherein the control unit and the indicating unit are arranged on the shell; the vacuum pump is electrically connected with the control unit; the sampling unit is arranged below the shell and comprises a vacuum sampling bottle, and the sampling unit is used for automatically sampling water to be sampled at fixed time; the heating unit is connected with the sampling unit and is used for heating the sampling unit; the rainwater collecting unit is located on the upper portion of the shell and is controlled by the control unit and used for automatically collecting rainwater. The invention can sample the polluted water at regular time and collect the local rainwater, thereby increasing the data of environmental detection of the polluted water area; the sampling bottle is used for carrying out heat insulation preservation on the water quality after sampling, and the condition of the water quality of water to be sampled during sampling can be truly reflected.

Description

Water quality sampling device

Technical Field

The invention relates to the field of water quality sampling equipment, in particular to a water quality sampling device.

Background

With the rapid development of social economy, the environmental pollution problem is increasingly prominent, and particularly the water environment pollution problem is showing the trend of regional expansion, diversified pollution and serious degree. In the face of global environmental problems and increasingly severe water crisis, water resource protection has become an urgent problem to be solved. In order to enhance the water environment quality monitoring, grasp the current situation of water quality in time, determine the time and air distribution conditions of pollutants in the water body, further track the sources and pollution ways of the pollutants and influence on human health, a large amount of on-site water quality sampling work is required to be carried out to obtain the timeliness and accuracy of water quality data.

Usually, the staff only can take a sample surface water, and at quality of water sample in-process, the staff can use quality of water sampling device, divide into manual quality of water sampling device and automatic quality of water sampling device two kinds among the current quality of water sampling device, and wherein automatic quality of water sampling device can regularly take a sample to quality of water, reduces staff's intensity of labour, still exists following not enoughly:

1. although some automatic water quality sampling devices have the function of heat preservation and insulation of the sampled water quality, the heat preservation structure is complex, the production cost is high, and the popularization is not facilitated.

2. Some automatic water quality sampling devices can not clear up the inlet tube, and especially the part that the inlet tube is located the aquatic is a large amount of microorganisms of easy adhesion, and a large amount of microorganisms are inhaled in the sampling bottle to cause the unsafe condition of taking a sample.

3. In the lower environment of temperature, the surface of water of waiting to sample water easily freezes, and stretches into the inlet tube of waiting to sample aquatic and can be blockked up by its inside ice-cube, leads to unable normal water sampling.

For the waters with heavy pollution, the staff can collect and sample the rainwater in the waters besides sampling the surface water quality to improve the water quality data of the polluted waters and provide data reference for further pollution treatment, and the manual rainwater collection often causes the rainwater collection difficulty or the unrepresentative rainwater collection point, so that the water quality detection data is distorted.

In view of the above, the water quality sampling device provided by the invention not only can overcome the defects of the automatic water quality sampling device, but also increases the function of rainwater collection, provides a comprehensive and accurate water quality sample for the detection of a polluted water area in time, and has the characteristics of simple structure and low production cost, and the water quality sampling device has the specific beneficial effects that:

1. the water quality sampling device provided by the invention can be used for sampling polluted water at regular time, collecting rainwater in the polluted water area and detecting the rainwater, increases the data of environmental detection of the polluted water area, and collects rainwater at the water quality sampling place, so that the collected rainwater can reflect the real condition of the water quality of the water area at the sampling point, and the rainwater collection point is representative and can provide accurate data reference for further environmental management.

2. According to the water quality sampling device, the vacuum bottle is used as the sampling bottle, the sampling bottle is used for carrying out heat insulation preservation on the sampled water quality, the heat insulation effect is good, the production cost of the sampling bottle is low, the production cost of the device is favorably reduced, and the water in the sampling bottle can truly reflect the water quality of the water to be sampled during sampling; can take notes the temperature of waiting to sample water at the moment of sampling through temperature sensor on the one hand, the correction of the data of being convenient for when the water quality testing in later stage improves water quality testing's accuracy, and on the other hand can take notes the temperature variation of waiting to sample the waters through temperature sensor, is favorable to studying whether influence each other and the degree of influence each other between microorganism and the temperature of waiting to sample aquatic.

3. According to the water quality sampling device, the heating unit is adopted to melt ice blocks in the water inlet pipe, so that the normal operation of sampling is ensured; the heating unit can remove microorganisms on the surface of the heating unit and the surface of the water inlet pipe in a heating mode so as to improve the authenticity of water quality sampling; the heating unit can also be used as a falling object to keep the position of the water inlet pipe in the water to be sampled unchanged, thereby being beneficial to sampling the water at the same depth for multiple times.

4. According to the water quality sampling device, the rainwater collecting unit can realize automatic collection of rainwater, the automation degree of the device is improved, and part of labor force is liberated.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the water quality sampling device provided by the invention is mainly used for sampling sewage in shallow water areas, can be used for sampling sewage, can also be used for collecting rainwater at a sampling point and using the collected rainwater for detection, and increases the accuracy of detection of polluted water area environment; meanwhile, the sampling bottle is a vacuum bottle, and the sampling bottle is used for carrying out heat insulation preservation on the sampled water quality, so that the condition of the water quality of water to be sampled in sampling can be truly reflected; the heating unit adopted by the invention can melt ice in the water inlet pipe, can remove microorganisms attached to the surface of the water inlet pipe and improve the authenticity of water quality sampling; the rainwater collecting unit can automatically collect rainwater, and can judge whether rainwater can be collected according to the wind speed condition in the rainy period.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a water quality sampling device, which comprises a shell, a control unit, an indicating unit, a vacuum pump, a sampling unit, a heating unit and a rainwater collecting unit, wherein the control unit and the indicating unit are arranged on the shell; the indicating unit comprises a signal indicating lamp and a sampling button, the indicating unit can identify the sampled sampling unit, and a worker can realize random sampling of water quality through the sampling button; the vacuum pump is electrically connected with the control unit; the sampling units are arranged below the shell, the number of the sampling units is equal to that of the indicating units, and the sampling units are used for automatically sampling water to be sampled at fixed time; the heating unit is connected with the sampling unit and is used for heating the sampling unit; the rainwater collection unit is located on the upper portion of the shell and used for automatically collecting rainwater.

The sampling unit comprises a fixed frame, a movable block, a rigid insertion tube, a sampling bottle, a rubber plug, a water inlet tube, a gas outlet tube, a one-way solenoid valve, a temperature sensor and a liquid level sensor, wherein the fixed frame is arranged below the shell, the upper part of the fixed frame is hinged with the movable block, the movable block is provided with a vertical rigid insertion tube, the lower part of the fixed frame is also provided with a vertical rigid insertion tube, and the two rigid insertion tubes are coaxially arranged; because the temperature difference change in some areas is large, the change of the temperature easily causes the microorganism content in the water to be sampled to be different at different moments, in order to truly reflect the condition of the water quality of the water to be sampled during sampling, the sampling bottle adopts a vacuum bottle, and the sampling bottle carries out heat insulation preservation on the sampled water quality; the temperature sensor is positioned in the water to be sampled, on one hand, the temperature of the water to be sampled at the sampling moment can be recorded through the temperature sensor, data correction is facilitated during later-stage water quality detection, the accuracy of water quality detection is improved, on the other hand, the temperature change of the water area to be sampled can be recorded through the temperature sensor, the study on whether microorganisms in the water to be sampled influence each other with the temperature and the degree of the mutual influence are facilitated, and a worker can read a temperature value through the display screen; in order to facilitate taking, placing and cleaning of the sampling bottle, the top and the bottom of the sampling bottle are respectively provided with an opening, a rubber plug is plugged in the opening, two rigid insertion tubes are respectively inserted into the rubber plugs from the two openings of the sampling bottle and are communicated with the sampling bottle, when the sampling bottle is placed, the sampling bottle is inserted into the rigid insertion tube positioned below, and then the movable block is rotated to enable the rigid insertion tube positioned above to be inserted into the sampling bottle; when the sampling bottle is taken out, the movable block is rotated to enable the rigid insertion tube positioned above to be separated from the sampling bottle, then the sampling bottle is directly taken out, and due to the elasticity of the rubber plug, after the rigid insertion tube is separated from the rubber plug, the rubber plug can fill a gap left by the rigid insertion tube, so that the sealing property of the sampling bottle is ensured; the water inlet pipe and the air outlet pipe are respectively connected with the sampling bottle through two rigid insertion pipes; the other end of the water inlet pipe extends into water to be sampled, and the heating unit and the water inlet pipe are arranged together in parallel and are positioned at the tail end of the water inlet pipe; in an environment with low temperature, the water surface of water to be sampled is easy to freeze, and a water inlet pipe extending into the water to be sampled is blocked by ice blocks inside the water inlet pipe, so that normal water quality sampling cannot be performed; the heating unit can also be used as a falling object to keep the position of the water inlet pipe in the water to be sampled unchanged, so that the water at the same depth can be sampled for multiple times; as an embodiment of the present invention, the heating unit may be made of one of a ceramic electrical heating tube, a stainless steel electrical heating tube, a quartz electrical heating tube and a titanium electrical heating tube; the other end of the air outlet pipe is connected with a one-way electromagnetic valve I; the first one-way electromagnetic valve is connected with a vacuum pump; the first liquid level sensor is used for detecting the water level in the sampling bottle.

When the sampling device works, the control unit sends an instruction to enable the heating unit to work, the heating unit removes microorganisms on the surface of the heating unit and the surface of the water inlet pipe, after the heating unit is completely cooled, the control unit controls the vacuum pump and the one-way electromagnetic valve to be opened, the vacuum pump pumps air in the sampling bottle through the air outlet pipe to enable the sampling bottle to form negative pressure, at the moment, water to be sampled enters the sampling bottle through the water inlet pipe, and when the liquid level sensor detects that the water in the sampling bottle reaches a preset water level, the control unit sends an instruction again to close the vacuum pump and the one-way electromagnetic valve.

As an embodiment of the present invention, the heating unit is sleeved outside the water inlet pipe or the water inlet pipe is sleeved outside the heating unit; a gap is arranged between the heating unit and the water inlet pipe. When the heating unit heats, the water around the heating unit is heated firstly, and the water inlet pipe is indirectly heated through the water, so that the water inlet pipe can be prevented from being damaged due to overhigh temperature, and the maintenance frequency of the invention is reduced.

The rainwater collecting unit comprises a collecting and folding mechanism, a water collecting cup, a humidity sensor, a two-position three-way electromagnetic valve, a second one-way electromagnetic valve, a rainwater collecting bottle, a second liquid level sensor and a liquid storage chamber, the collecting and folding mechanism is arranged at the top of the shell, the collecting and folding mechanism is of an inverted cone-shaped structure when unfolded, the collecting and folding mechanism can be automatically unfolded and folded, rainwater can be collected when the collecting and folding mechanism is unfolded, and pollutants can be prevented from falling into the collecting and folding mechanism when the collecting and folding mechanism is folded, so that the condition that the pollution content in the rainwater is unreal can be avoided; the water collecting cup is positioned below the collecting and folding mechanism; the humidity sensor is arranged outside the shell and used for detecting the humidity in the environment; the water inlet of the two-position three-way electromagnetic valve is connected with the water collecting cup, one outlet of the two-position three-way electromagnetic valve is communicated with the outside, the other outlet of the two-position three-way electromagnetic valve is connected with a plurality of second one-way electromagnetic valves, and each second one-way electromagnetic valve is connected with a rainwater collecting bottle; the rainwater collecting bottle is arranged in the liquid storage chamber; the second liquid level sensor is arranged in the liquid storage chamber and is used for detecting the water level in the rainwater collecting bottle; the liquid storage chamber is fixed on the shell.

The collecting and folding mechanism comprises an upright post, a first connecting rod, waterproof cloth, a second connecting rod, a distance sensor, a wind speed sensor, a walking module and a clamping module, wherein the upright post is vertically arranged at the top of the shell, the bottom of the upright post is uniformly hinged with a plurality of first connecting rods along the circumference, and the first connecting rods are coated with a layer of waterproof cloth; one end of the second connecting rod is hinged to the first connecting rod, the other end of the second connecting rod is hinged to the walking module, and the walking module is installed on the stand column and used for walking on the stand column; the clamping module is arranged on the walking module and is used for clamping the upright post; the distance sensor and the wind speed sensor are arranged on the top of the upright post; the wind speed sensor is used for detecting wind power, and the control unit judges whether the collecting and folding mechanism needs to be unfolded and the unfolding degree according to data detected by the wind speed sensor; the distance sensor is used for measuring the distance between the walking module and the top end of the upright post, and the control unit judges the unfolding degree of the collecting and folding mechanism according to the distance measured by the distance sensor. During rain, wind often occurs, and during a rainwater collecting process, strong wind can damage a collecting and folding mechanism, particularly a first connecting rod and a second connecting rod which are used as frameworks are easy to damage, so that a downward included angle formed between the second connecting rod and an upright post is an acute angle in order to reduce the damage of the strong wind to the first connecting rod and the second connecting rod; when the wind power is small, the clamping module can ensure that the walking module cannot move; when the wind power is large, the wind can force the walking module to move upwards, and a protective slip is formed between the clamping module and the upright post, so that the stress area of the collecting and folding mechanism is reduced, and the stress of the first connecting rod and the second connecting rod is further reduced; when No. two connecting rods are perpendicular to the stand column, the walking module is located at a dead point position, the walking module cannot change positions due to the size of wind power, the first connecting rod and the second connecting rod at the moment are most easily damaged, and when a downward included angle formed between the second connecting rod and the stand column is an obtuse angle, the walking module can move downwards under the action of the wind power, because any two sides of the triangle are larger than the third side, namely in the stand column, the triangle formed by the first connecting rod and the second connecting rod, the sum of the lengths of the stand column and the second connecting rod is larger than that of the first connecting rod, the collecting folding mechanism cannot be completely folded, and therefore the first connecting rod and the second connecting rod are also easily damaged. The walking module comprises a shell, a walking motor and a walking wheel, wherein the walking motor and the walking wheel are positioned in the shell, and the walking motor drives the walking wheel to walk along the upright post; the clamping module comprises two push-pull electromagnets, the push-pull electromagnets are located on two sides of the stand column and are installed below the shell, a friction plate is arranged on an extension rod of each push-pull electromagnet, when the push-pull electromagnets are powered off, the friction plates are tightly pressed on the stand column to realize clamping, when the push-pull electromagnets are powered on, the extension rods drive the friction plates to leave the stand column, and clamping of the stand column is finished.

When the rainwater collection device works, the humidity sensor detects the humidity in the environment, whether the rainwater is rained or not is judged through the control unit, and if the rainwater is not rained, the control unit does not send an instruction to the rainwater collection unit; if the rain falls, the wind speed sensor detects the wind speed, when the wind speed is greater than a set maximum wind speed value, the control unit does not send an instruction to the rainwater collecting unit, the maximum wind speed value is the minimum wind speed value which destroys the rain collecting device, and the rain collecting device can detect through experiments, does not collect the rain at the moment, and can cause the damage of the collecting and folding mechanism if the rain is collected forcibly; when the wind speed is smaller than the set maximum wind speed value, the control unit sends an instruction to the walking module and the clamping module, the clamping module loosens the clamping of the upright post, then the walking module moves downwards, the control unit determines the descending distance of the walking module according to the wind speed, the descending distance of the walking module is measured through the distance sensor, the walking module descends to an accurate distance, and finally the clamping module clamps the upright post; meanwhile, the control unit opens the two-position three-way electromagnetic valve and the second one-way electromagnetic valve, rainwater flows into the water collecting cup from the collecting and folding mechanism, then the rainwater sequentially passes through the two-position three-way electromagnetic valve and the second one-way electromagnetic valve and finally flows into the rainwater collecting bottle, when the second liquid level sensor detects that the rainwater in the rainwater collecting bottle reaches a preset water level, the control unit sends an instruction again to close the second one-way electromagnetic valve, the two-position three-way electromagnetic valve is reversed, the rainwater in the water collecting cup is guided to the outside, and the collecting and folding mechanism is automatically folded, so that the collecting and folding mechanism is prevented from being damaged by strong wind; the rainwater collection unit is used for collecting water in atmospheric circulation, the sampling unit is used for sampling surface water, the sampling unit and the surface water are combined to act together, comprehensive detection and judgment on water pollution conditions of sampling regions can be realized, and the comprehensive detection on the water pollution environment of the sampling regions cannot be realized by singly detecting one data, so that the rainwater sampling and the surface water sampling of the invention are mutually matched and cannot be separately seen.

The invention has the beneficial effects that:

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a front view of the present invention;

FIG. 2 is a front view of the sampling unit of the present invention;

FIG. 3 is a schematic structural view of the collecting and folding mechanism of the present invention;

in the figure: the device comprises a shell 1, a control unit 2, an indicating unit 3, a vacuum pump 4, a sampling unit 5, a fixed frame 50, a movable block 51, a rigid insertion tube 52, a sampling bottle 53, a rubber plug 54, a water inlet tube 55, an air outlet tube 56, a one-way electromagnetic valve 57, a temperature sensor 58, a one-way liquid level sensor 59, a heating unit 6, a rainwater collecting unit 7, a collecting and folding mechanism 70, a stand column 701, a one-way connecting rod 702, a waterproof cloth 703, a two-way connecting rod 704, a distance sensor 705, a wind speed sensor 706, a walking module 707, a clamping module 708, a water collecting cup 71, a humidity sensor 72, a two-position three-way electromagnetic valve 73, a two-way electromagnetic valve 74, a rainwater collecting bottle 75, a two.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1, the water quality sampling device of the present invention comprises a housing 1, a control unit 2, an indicating unit 3, a vacuum pump 4, a sampling unit 5, a heating unit 6 and a rainwater collecting unit 7, wherein the control unit 2 and the indicating unit 3 are mounted on the housing 1, the control unit 2 comprises a controller, a display screen and a power supply, and the control unit 2 controls all electrical components of the present invention; the indicating unit 3 comprises a signal indicating lamp and a sampling button, the indicating unit 3 can mark the sampled sampling unit 5, and a worker can realize random sampling of water quality through the sampling button; the vacuum pump 4 is electrically connected with the control unit 2; the sampling units 5 are arranged below the shell 1, the number of the sampling units 5 is equal to that of the indicating units 3, and the sampling units 5 are used for automatically sampling water to be sampled at fixed time; the heating unit 6 is connected with the sampling unit 5 and is used for heating the sampling unit 5; the rainwater collection unit 7 is positioned at the upper part of the shell 1, and the rainwater collection unit 7 is used for automatically collecting rainwater.

As shown in fig. 1 and 2, the water quality sampling device according to the present invention includes a sampling unit 5, wherein the sampling unit 5 includes a fixed frame 50, a movable block 51, a rigid insertion tube 52, a sampling bottle 53, a rubber plug 54, a water inlet tube 55, a gas outlet tube 56, a one-way solenoid valve 57, a temperature sensor 58 and a liquid level sensor 59, the fixed frame 50 is installed below the housing 1, the upper portion of the fixed frame 50 is hinged with the movable block 51, the movable block 51 is provided with a vertical rigid insertion tube 52, the lower portion of the fixed frame 50 is also provided with a vertical rigid insertion tube 52, and the two rigid insertion tubes 52 are coaxially arranged; because the temperature difference change in some areas is large, and the change of the temperature easily causes the microorganism content in the water to be sampled to be different at different moments, in order to truly reflect the condition of the water quality of the water to be sampled during sampling, the sampling bottle 53 adopts a vacuum bottle, and the sampling bottle 53 carries out heat insulation preservation on the sampled water quality; the temperature sensor 58 is positioned in the water to be sampled, on one hand, the temperature of the water to be sampled at the sampling moment can be recorded through the temperature sensor 58, data correction is facilitated during later-stage water quality detection, the accuracy of water quality detection is improved, on the other hand, the temperature change of the water area to be sampled can be recorded through the temperature sensor 58, whether the microorganisms in the water to be sampled influence each other with the temperature and the degree of the mutual influence are favorably researched, and a worker can read the temperature value through the display screen; in order to facilitate taking, placing and cleaning of the sampling bottle 53, the top and the bottom of the sampling bottle 53 are provided with an opening, a rubber plug 54 is plugged on the opening, two rigid insertion tubes 52 are respectively inserted into the rubber plugs 54 from the two openings of the sampling bottle 53 and are communicated with the sampling bottle 53, when the sampling bottle 53 is placed, the sampling bottle 53 is inserted into the rigid insertion tube 52 positioned below, and then the movable block 51 is rotated to enable the rigid insertion tube 52 positioned above to be inserted into the sampling bottle 53; when the sampling bottle 53 is taken out, the movable block 51 is rotated to enable the rigid insertion tube 52 positioned above to be separated from the sampling bottle 53, then the sampling bottle 53 is directly taken out, and due to the elasticity of the rubber plug 54, after the rigid insertion tube 52 is separated from the rubber plug 54, the rubber plug 54 can fill the gap left by the rigid insertion tube 52, so that the sealing property of the sampling bottle 53 is ensured; the water inlet pipe 55 and the air outlet pipe 56 are respectively connected with the sampling bottle 53 through two rigid insertion pipes 52; the other end of the water inlet pipe 55 extends into the water to be sampled, and the heating unit 6 and the water inlet pipe 55 are arranged together in parallel and are positioned at the tail end of the water inlet pipe 55; in an environment with low temperature, the water surface of water to be sampled is easy to freeze, and the water inlet pipe 55 extending into the water to be sampled is blocked by ice blocks inside the water inlet pipe, so that normal water quality sampling cannot be performed, the heating unit 6 can be used for melting the ice blocks in the water inlet pipe 55, so that the normal sampling operation is ensured, and because the heating unit 6 and the water inlet pipe 55 are located in the water to be sampled for a long time, a large number of microorganisms are bred on the surfaces of the heating unit 6 and the water inlet pipe 55 in the water to be sampled, and the condition that sampling is unreal is easy to cause during water quality sampling, at the moment, the heating unit 6 can remove the microorganisms on the surfaces of the heating unit 6 and the water inlet pipe 55 in a heating mode, so that the; the heating unit 6 can also be used as a falling object to keep the position of the water inlet pipe 55 in the water to be sampled unchanged, so that the water at the same depth can be sampled for multiple times; as an embodiment of the present invention, the heating unit 6 may be made of one of a ceramic electrical heating tube, a stainless steel electrical heating tube, a quartz electrical heating tube, and a titanium electrical heating tube; the other end of the air outlet pipe 56 is connected with a one-way electromagnetic valve 57I; the first one-way electromagnetic valve 57 is connected with the vacuum pump 4; the first liquid level sensor 59 is used for detecting the water level in the sampling bottle 53.

When carrying out the water quality sample, the control unit 2 gives an instruction and makes the heating unit 6 work, the heating unit 6 clears away its self surface and the microorganism on inlet tube 55 surface, treat that the heating unit 6 cools off the back completely, the control unit 2 control vacuum pump 4 and a one way solenoid valve 57 open, the vacuum pump 4 is taken out the air in the sample bottle 53 through outlet duct 56, make and form the negative pressure in the sample bottle 53, at this moment, treat that the water of sample gets into in the sample bottle 53 through inlet tube 55, when a level sensor 59 detects the water in the sample bottle 53 and reaches predetermined water level, the control unit 2 gives an instruction once more and closes vacuum pump 4 and a one way solenoid valve 57.

As an embodiment of the present invention, the heating unit 6 is sleeved outside the water inlet pipe 55 or the water inlet pipe 55 is sleeved outside the heating unit 6; a gap is arranged between the heating unit 6 and the water inlet pipe 55. When the heating unit 6 heats, the water around the heating unit is heated first, and the water inlet pipe 55 is indirectly heated through the water, so that the water inlet pipe 55 is prevented from being damaged due to overhigh temperature, and the maintenance frequency of the invention is reduced.

As shown in fig. 1, the rainwater collection unit 7 of the water quality sampling device of the present invention includes a collection folding mechanism 70, a water collection cup 71, a humidity sensor 72, a two-position three-way solenoid valve 73, a second one-way solenoid valve 74, a rainwater collection bottle 75, a second liquid level sensor 76 and a liquid storage chamber 77, the collection folding mechanism 70 is installed at the top of the housing 1, the collection folding mechanism 70 is in an inverted cone structure when unfolded, the collection folding mechanism 70 can be automatically unfolded and folded, when the collection folding mechanism 70 is unfolded, rainwater can be collected, and when the collection folding mechanism 70 is folded, the situation that pollutants fall inside the collection folding mechanism 70 and cause unreal pollution content in the rainwater can be avoided; the water collecting cup 71 is positioned below the collecting and folding mechanism 70; the humidity sensor 72 is installed outside the housing 1, and the humidity sensor 72 is used for detecting the humidity in the environment; a water inlet of the two-position three-way electromagnetic valve 73 is connected with the water collecting cup 71, one outlet of the two-position three-way electromagnetic valve 73 is communicated with the outside, the other outlet of the two-position three-way electromagnetic valve 73 is connected with a plurality of second one-way electromagnetic valves 74, and each second one-way electromagnetic valve 74 is connected with a rainwater collecting bottle 75; the rainwater collecting bottle 75 is arranged in the liquid storage chamber 77; the second liquid level sensor 76 is installed in the liquid storage chamber 77 and is used for detecting the water level in the rainwater collecting bottle 75; the reservoir 77 is fixed to the housing 1.

As shown in fig. 3, the water quality sampling device according to the present invention comprises a collecting and folding mechanism 70, wherein the collecting and folding mechanism comprises a vertical column 701, a first connecting rod 702, a waterproof cloth 703, a second connecting rod 704, a distance sensor 705, a wind speed sensor 706, a walking module 707 and a clamping module 708, the vertical column 701 is vertically installed on the top of the housing 1, the bottom of the vertical column 701 is uniformly hinged with a plurality of first connecting rods 702 along the circumference, and the first connecting rods 702 are covered with a layer of waterproof cloth 703; one end of the second connecting rod 704 is hinged on the first connecting rod 702, the other end of the second connecting rod 704 is hinged on the walking module 707, and the walking module 707 is installed on the upright column 701 and is used for walking on the upright column 701; the clamping module 708 is arranged on the walking module 707 and is used for clamping the upright column 701; the distance sensor 705 and the wind speed sensor 706 are arranged on the top of the upright column 701; the wind speed sensor 706 is used for detecting wind power, and the control unit 2 judges whether the collecting and folding mechanism 70 should be unfolded and the unfolding degree according to the data detected by the wind speed sensor 706; the distance sensor 705 is used for measuring the distance from the walking module 707 to the top end of the upright column 701, and the control unit 2 judges the degree of unfolding of the collecting and folding mechanism 70 according to the distance measured by the distance sensor 705. During rain, wind often occurs, and during rain water collection, strong wind can damage the collecting and folding mechanism 70, particularly the first connecting rod 702 and the second connecting rod 704 serving as frameworks are easy to damage, so that a downward included angle formed between the second connecting rod 704 and the upright column 701 is an acute angle in order to reduce the damage of the strong wind to the first connecting rod 702 and the second connecting rod 704; when the wind power is small, the clamping module 708 can ensure that the walking module 707 cannot move; when the wind power is large, the wind can force the walking module 707 to move upwards, and a protective slip is formed between the clamping module 708 and the upright column 701, so that the stress area of the collecting and folding mechanism 70 is reduced, and the stress of the first connecting rod 702 and the second connecting rod 704 is further reduced; when the second connecting rod 704 is perpendicular to the upright column 701, the walking module 707 is located at a dead point position, the walking module 707 does not change position due to the wind power, at this time, the first connecting rod 702 and the second connecting rod 704 are most easily damaged, and when a downward included angle formed between the second connecting rod 704 and the upright column 701 is an obtuse angle, the walking module 707 moves downward under the action of the wind power, because any two sides of the triangle are larger than the third side, that is, in the triangle formed by the upright column 701, the first connecting rod 702 and the second connecting rod 704, the sum of the lengths of the upright column 701 and the second connecting rod 704 is larger than the length of the first connecting rod 702, the collecting and folding mechanism 70 cannot be completely folded, and therefore the first connecting rod 702 and the second connecting rod 704 are easily damaged. The walking module 707 comprises a shell, a walking motor and a walking wheel, the walking motor and the walking wheel are positioned in the shell, and the walking motor drives the walking wheel to walk along the upright column 701; the clamping module 708 comprises two push-pull electromagnets, the push-pull electromagnets are located on two sides of the stand column 701 and are installed below the shell, a friction plate is arranged on an extension rod of each push-pull electromagnet, when the push-pull electromagnets are powered off, the friction plates are tightly pressed on the stand column 701 to realize clamping, when the push-pull electromagnets are powered on, the extension rods drive the friction plates to leave the stand column 701, and clamping of the stand column 701 is finished.

When rainwater is collected, the humidity sensor 72 detects the humidity in the environment, and judges whether it rains through the control unit 2, if it does not rain, the control unit 2 does not give an instruction to the rainwater collection unit 7; if it rains, the wind speed sensor 706 detects the wind speed, and when the wind speed is greater than the set maximum wind speed value, the control unit 2 does not send an instruction to the rainwater collection unit 7, and the maximum wind speed value is the minimum wind speed value for destroying the present invention, and can be measured through experiments, and at this time, rainwater is not collected, and if rainwater is collected forcibly, the damage of the collection folding mechanism 70 is caused; when the wind speed is smaller than the set maximum wind speed value, the control unit 2 sends an instruction to the walking module 707 and the clamping module 708, the clamping module 708 loosens the clamping of the upright column 701, then the walking module 707 moves downwards, the control unit 2 determines the descending distance of the walking module 707 according to the wind speed, the descending distance of the walking module 707 is measured through the distance sensor 705, the walking module 707 descends to an accurate distance, and finally the clamping module 708 clamps the upright column 701; meanwhile, the control unit 2 opens the two-position three-way electromagnetic valve 73 and the second one-way electromagnetic valve 74, rainwater flows into the water collecting cup 71 from the collecting and folding mechanism 70, then the rainwater sequentially passes through the two-position three-way electromagnetic valve 73 and the second one-way electromagnetic valve 74 and finally flows into the rainwater collecting bottle 75, when the second liquid level sensor 76 detects that the rainwater in the rainwater collecting bottle 75 reaches a preset water level, the control unit 2 sends an instruction again to close the second one-way electromagnetic valve 74, the two-position three-way electromagnetic valve 73 is reversed, the rainwater in the water collecting cup 71 is guided to the outside, and the collecting and folding mechanism 70 is automatically folded, so that the collecting and folding mechanism 70 is prevented from being damaged by strong wind.

During operation, the worker fixes the device at a water quality sampling point of a water area to be sampled, then places the sampling bottle 53 and the rainwater collecting bottle 75 on the fixing frame 50 and the liquid storage chamber 77 respectively, and then operates the control unit and sets the water quality sampling time, so that the automatic timing sampling device is capable of automatically sampling at regular time. The polluted water collected by the sampling unit 5 and the rainwater at the sampling point collected by the rainwater collection unit 7 jointly form a sample for detecting the water quality of the polluted water area, and complete and accurate data information is provided for the treatment of the polluted water area.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A water quality sampling method adopts a water quality sampling device which comprises a shell (1), a control unit (2), an indicating unit (3) and a vacuum pump (4), wherein the control unit (2) and the indicating unit (3) are installed on the shell (1), and the control unit (2) comprises a controller, a display screen and a power supply; the indicating unit (3) comprises a signal indicating lamp and a sampling button; the vacuum pump (4) is electrically connected with the control unit (2);

the rainwater sampling device is characterized by further comprising sampling units (5), heating units (6) and rainwater collecting units (7), wherein the sampling units (5) are installed below the shell (1), and the number of the sampling units (5) is equal to that of the indicating units (3); the heating unit (6) is connected with the sampling unit (5) and is used for heating the sampling unit (5); the rainwater collecting unit (7) is positioned at the upper part of the shell (1) and is used for automatically collecting rainwater; wherein:

the sampling unit (5) comprises a fixed frame (50), a movable block (51), rigid insertion tubes (52), a sampling bottle (53), a rubber plug (54), a water inlet tube (55), an air outlet tube (56), a one-way electromagnetic valve (57), a temperature sensor (58) and a liquid level sensor (59), wherein the fixed frame (50) is arranged below the shell (1), the movable block (51) is hinged to the upper part of the fixed frame (50), the movable block (51) is provided with the vertical rigid insertion tube (52), the lower part of the fixed frame (50) is also provided with the vertical rigid insertion tube (52), and the two rigid insertion tubes (52) are coaxially arranged; the sampling bottle (53) is a vacuum bottle, the top and the bottom of the sampling bottle (53) are both provided with an opening, a rubber plug (54) is plugged on the opening, and two rigid insertion tubes (52) are respectively inserted into the rubber plugs (54) from the two openings of the sampling bottle (53) and are communicated with the sampling bottle (53); the water inlet pipe (55) and the air outlet pipe (56) are respectively connected with the sampling bottle (53) through two rigid insertion pipes (52); the other end of the water inlet pipe (55) extends into the water to be sampled; the other end of the air outlet pipe (56) is connected with a one-way electromagnetic valve (57); the first one-way electromagnetic valve (57) is connected with the vacuum pump (4); the temperature sensor (58) is positioned in the water to be sampled; the first liquid level sensor (59) is used for detecting the water level in the sampling bottle (53);

the heating unit (6) and the water inlet pipe (55) are arranged together in parallel and are positioned at the tail end of the water inlet pipe (55);

the rainwater collection unit (7) comprises a collection folding mechanism (70), a water collection cup (71), a humidity sensor (72), a two-position three-way electromagnetic valve (73), a second one-way electromagnetic valve (74), a rainwater collection bottle (75), a second liquid level sensor (76) and a liquid storage chamber (77), the collection folding mechanism (70) is installed at the top of the shell (1), and the collection folding mechanism (70) is of an inverted cone structure when unfolded; the water collecting cup (71) is positioned below the collecting and folding mechanism (70); the humidity sensor (72) is arranged outside the shell (1); a water inlet of the two-position three-way electromagnetic valve (73) is connected with the water collecting cup (71), one outlet of the two-position three-way electromagnetic valve (73) is communicated with the outside, the other outlet of the two-position three-way electromagnetic valve (73) is connected with a plurality of second one-way electromagnetic valves (74), and each second one-way electromagnetic valve (74) is connected with a rainwater collecting bottle (75); the rainwater collecting bottle (75) is arranged in the liquid storage chamber (77); the second liquid level sensor (76) is arranged in the liquid storage chamber (77) and is used for detecting the water level in the rainwater collecting bottle (75); the liquid storage chamber (77) is fixed on the shell (1);

the collecting and folding mechanism (70) comprises an upright post (701), a first connecting rod (702), waterproof cloth (703), a second connecting rod (704), a distance sensor (705), a wind speed sensor (706), a walking module (707) and a clamping module (708), wherein the upright post (701) is vertically arranged at the top of the shell (1), the bottom of the upright post (701) is uniformly hinged with the first connecting rods (702) along the circumference, and the first connecting rods (702) are coated with a layer of waterproof cloth (703); one end of the second connecting rod (704) is hinged on the first connecting rod (702), and the other end of the second connecting rod (704) is hinged on the walking module (707); the distance sensor (705) and the wind speed sensor (706) are arranged at the top of the upright post (701), and the distance sensor (705) is used for measuring the distance from the walking module (707) to the top end of the upright post (701); the walking module (707) is arranged on the upright column (701) and is used for walking on the upright column (701); the clamping module (708) is arranged on the walking module (707) and is used for clamping the upright column (701);

a downward included angle formed between the upright column (701) and the second connecting rod (704) is an acute angle;

the heating unit (6) is sleeved outside the water inlet pipe (55) or the water inlet pipe (55) is sleeved outside the heating unit (6); a gap is arranged between the heating unit (6) and the water inlet pipe (55); the method is characterized in that:

during sampling, a worker fixes the water quality sampling device at a water quality sampling point of a water area to be sampled, then places a sampling bottle (53) and a rainwater collecting bottle (75) on a fixing frame (50) and a liquid storage chamber (77) respectively, and then the worker operates a control unit (2) and sets the time of water quality sampling so as to enable the water quality sampling device to sample automatically at regular time; the polluted water collected by the sampling unit (5) and the rainwater at the sampling point collected by the rainwater collecting unit (7) jointly form a sample for detecting the water quality of the polluted water area;

when water quality sampling is carried out, the control unit (2) sends an instruction to enable the heating unit (6) to work, the heating unit (6) removes microorganisms on the surface of the heating unit and the surface of the water inlet pipe (55), after the heating unit (6) is completely cooled, the control unit (2) controls the vacuum pump (4) and the one-way electromagnetic valve (57) to be opened, the vacuum pump (4) pumps out air in the sampling bottle (53) through the air outlet pipe (56) to enable negative pressure to be formed in the sampling bottle (53), at the moment, water to be sampled enters the sampling bottle (53) through the water inlet pipe (55), and when the one-level sensor (59) detects that water in the sampling bottle (53) reaches a preset water level, the control unit (2) sends an instruction again to close the vacuum pump (4) and the one-way electromagnetic valve (57);

when rainwater is collected, the humidity sensor (72) detects the humidity in the environment, whether the rainwater is rained or not is judged through the control unit (2), and if the rainwater is not rained, the control unit (2) does not give an instruction to the rainwater collection unit (7); if the rainwater is rained, the wind speed sensor (706) detects the wind speed, when the wind speed is greater than a set maximum wind speed value, the control unit (2) does not send an instruction to the rainwater collection unit (7), the maximum wind speed value is the minimum wind speed for damaging the rainwater collection unit (7), and the rainwater can be measured through experiments, at the moment, the rainwater is not collected, and if the rainwater is collected forcibly, the damage to the collection folding mechanism (70) can be caused; when the wind speed is smaller than the set maximum wind speed value, the control unit (2) sends an instruction to the walking module (707) and the clamping module (708), the clamping module (708) loosens the clamping of the upright post (701), then the walking module (707) moves downwards, the control unit (2) determines the descending distance of the walking module (707) according to the wind speed, the descending distance of the walking module (707) is measured through the distance sensor (705), the walking module (707) descends to an accurate distance, and finally the clamping module (708) clamps the upright post (701); meanwhile, the control unit (2) opens the two-position three-way electromagnetic valve (73) and the second one-way electromagnetic valve (74), rainwater flows into the water collecting cup (71) from the collecting folding mechanism (70), then the rainwater sequentially passes through the two-position three-way electromagnetic valve (73) and the second one-way electromagnetic valve (74) and finally flows into the rainwater collecting bottle (75), when the second liquid level sensor (76) detects that the rainwater in the rainwater collecting bottle (75) reaches a preset water level, the control unit (2) sends an instruction again to close the second one-way electromagnetic valve (74), the two-position three-way electromagnetic valve (73) is reversed, the rainwater in the water collecting cup (71) is guided to the outside, and the collecting folding mechanism (70) is automatically folded, so that the collecting folding mechanism (70) is prevented from being damaged by strong wind.