A water quality detection sampling device and a method of using the same

Abstract

The invention relates to the technical field of water quality detection, and provides a water quality detection sampling device and a method for using the same. On the basis of arranging a water inlet pipe, a liquid outlet pipe and an air outlet pipe on the surface of an inner tube body, a structural design that cooperates with an air pump module, a pressurizing piston, a first electromagnet, a second electromagnet, a reset spring, a gas-liquid separation mechanism and an automatic sampling mechanism is utilized. On the one hand, a first puncture tube and a second puncture tube can be controlled to enter or leave a liquid sampling tube and a gas sampling tube according to different sampling media. On the other hand, the first puncture tube, the second puncture tube and the pressure-bearing piston are simultaneously raised or lowered, so that when the gas sampling tube is sampled and the liquid sampling tube is sampled multiple times, the pressure-bearing piston can prevent liquid from entering the liquid outlet pipe when the first puncture tube is separated from the liquid sampling tube, thereby solving the problem that the gas decomposed from the water affects the detection result during the water quality sampling process, and the device has the characteristics of automatic and separate sampling of gas and liquid samples and improved detection accuracy of water quality samples.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and in particular to a water quality detection sampling device and a use method thereof. Background Art

[0002] Water pollution is divided into three categories: animal and plant secretion pollution sources, domestic pollution sources and industrial pollution sources. Animal and plant secretion pollution sources mainly refer to feces, urine, etc. Domestic pollution sources mainly come from toilets, bathrooms, garbage cans, sewers and other places. Industrial pollution sources include sewage treatment plants, meat processing plants, paper mills and petrochemical enterprises.

[0003] Industrial sewage, municipal sewage and domestic sewage are generally discharged into rivers after treatment and purification. In order to monitor the river water quality and the pollution sources that affect the deterioration of water quality, it is necessary to regularly sample and test the river water quality.

[0004] When the water quality detection sampling device in the prior art is sampling, it is often ignored that the pollution source is in a state of continuous chemical and physical changes in the water. For example, when the river water is polluted, especially the river water pollution caused by the discharge of domestic sewage, bubbles often appear on the water surface. This is the CH4, CO and other gases produced by the reaction or decomposition in the water. When the water containing CH4, CO and other gases is collected in the sampling tube, on the one hand, bubbles will be generated in the sampling tube to affect the detection work, and on the other hand, the gas in the sampling tube cannot be collected and detected, and thus the gas composition cannot be obtained, and the pollutant composition and content cannot be fully and comprehensively grasped. Summary of the invention

[0005] The purpose of the present invention is to provide a water quality detection sampling device and a method of using the same, aiming to solve the problems existing when using the existing waste gas detection devices and detection methods.

[0006] To achieve the above object, the present invention provides the following technical solution: a water quality detection sampling device, comprising an outer shell, and further comprising:

[0007] An inner tube body fixedly connected to the inner side of the outer tube body, a water inlet pipe, a liquid outlet pipe and an air outlet pipe fixedly connected to the outer side of the inner tube body, the liquid outlet pipe is located below the air outlet pipe, a gas-liquid two-phase flow sensor is arranged on the surface of the water inlet pipe, the connection between the water inlet pipe and the inner tube body is distributed above the connection between the air outlet pipe and the inner tube body, a first sealing plate and a second sealing plate are fixedly connected to the inner side of the inner tube body, the second sealing plate is distributed above the connection between the water inlet pipe and the inner tube body, and the first sealing plate is distributed below the connection between the liquid outlet pipe and the inner tube body;

[0008] An air pump module is disposed above the second sealing plate;

[0009] A pressurizing piston in sliding contact with the inner wall of the inner tube, the second sealing plate is distributed above the pressurizing piston, and the air pump module adjusts the position of the pressurizing piston by exhausting or vacuuming;

[0010] a first electromagnet and a second electromagnet disposed above the first sealing plate;

[0011] A gas-liquid separation mechanism, the gas-liquid separation mechanism comprises a pressure-bearing piston, a magnet ring, a bent rod, a first longitudinal frame, a first puncture tube and a second puncture tube, the bent rod is fixedly connected between the pressure-bearing piston and the first longitudinal frame, the magnet ring is embedded in the surface of the pressure-bearing piston, the first puncture tube and the second puncture tube are respectively fixedly connected to the upper and lower ends of the first longitudinal frame, and the first puncture tube and the second puncture tube are respectively movably connected in the liquid outlet pipe and the gas outlet pipe;

[0012] An automatic sampling mechanism that rotates with the inner tube body as the axis, wherein arc-shaped tube sleeves are provided on both the upper and lower sides of the automatic sampling mechanism;

[0013] Solenoid valves installed on the water inlet pipe, liquid outlet pipe and air outlet pipe;

[0014] a return spring connected between the pressure-bearing piston and the first sealing plate;

[0015] The liquid sampling tube and the gas sampling tube are installed in the arc-shaped tube sleeves on both sides. The gas sampling tube is inverted in the arc-shaped tube sleeve on the upper side, and the liquid sampling tube is upright in the arc-shaped tube sleeve on the lower side. Through holes are provided at the positions of the first puncture tube and the second puncture tube on the end faces of the two arc-shaped tube sleeves corresponding to the positions of the first puncture tube and the second puncture tube.

[0016] As a further solution of the present invention, the automatic sampling mechanism includes a driving unit, a transmission gear ring, a limit bite structure and a second longitudinal frame, the limit bite structure is arranged on the inner side of the transmission gear ring, the transmission gear ring is fixedly connected to the second longitudinal frame on both the upper and lower sides, the ends of the second longitudinal frame on both the upper and lower sides are fixedly connected to the arc-shaped pipe sleeve, the driving unit is fixedly connected to the outer shell, and the transmission gear ring is transmission-connected to the driving unit.

[0017] As a further solution of the present invention, a method for using a water quality detection sampling device includes the following specific steps:

[0018] S100, in the initial state, the first electromagnet and the second electromagnet are controlled to be powered off, the elastic force of the return spring controls the pressure-bearing piston to be located above the connection between the liquid outlet tube and the inner tube body, the first puncture tube and the second puncture tube are located above and below the two through holes respectively, the gas sampling tube is inverted in the arc-shaped tube sleeve on the upper side, and the liquid sampling tube is upright in the arc-shaped tube sleeve on the lower side;

[0019] S200, controlling the first electromagnet to be energized, and the magnetic repulsion force between the energized first electromagnet and the magnet ring controls the pressure-bearing piston, the first puncture tube and the second puncture tube to move upward, the first puncture tube shrinks upward into the liquid outlet tube, and the second puncture tube enters the gas sampling tube through the through hole;

[0020] S300, connect the water inlet pipe to the liquid pump, control the solenoid valve of the water inlet pipe to open, control a certain amount of water sample to enter the inner tube body through the water inlet pipe or control the liquid level in the inner tube body to be 3cm-5cm lower than the connection between the gas outlet pipe and the inner tube body, and the gas-liquid two-phase flow sensor is used to monitor whether there is gas in the water sample;

[0021] S400, when the water sample contains gas, let it stand for several hours, control the solenoid valve of the water inlet pipe to close, control the solenoid valve on the air outlet pipe to open, control the air pump module to exhaust air to achieve the purpose of controlling the pressurizing piston to move downward, and the downward moving pressurizing piston squeezes the gas sample into the gas sampling tube through the air outlet pipe and the second puncture tube;

[0022] S500, control the first electromagnet to be powered off, and control the second electromagnet to be powered on. The magnetic attraction between the powered-on second electromagnet and the magnet ring controls the pressure-bearing piston, the first puncture tube, and the second puncture tube to move downward. When the magnet ring fits with the second electromagnet, the pressure-bearing piston is located above the connection between the liquid outlet tube and the inner tube body, the first puncture tube enters the liquid sampling tube through the through hole, and the second puncture tube is separated from the gas sampling tube and the through hole.

[0023] S600, continue to use the air pump module to control the pressurizing piston to inject the liquid sample into the liquid sampling tube through the liquid outlet tube and the first puncture tube;

[0024] S700. Based on the diversity of the number of liquid samples and the low gas content in the water quality samples, the first puncture tube and the second puncture tube are separated from the two through holes respectively using the steps described in S100, and the automatic sampling mechanism is controlled to rotate 45 degrees or 60 degrees with the inner tube body as the axis, so that the empty liquid sampling tube and the gas sampling tube are realigned with the first puncture tube and the second puncture tube, and the liquid samples are injected into the liquid sampling tubes using the steps described in S500 and S600, and sampling is stopped when the liquid samples are injected into 3 or 5 liquid sampling tubes.

[0025] The beneficial effects of the present invention are as follows: by utilizing the structural design that cooperates with the air pump module, the pressurizing piston, the first electromagnet, the second electromagnet, the return spring, the gas-liquid separation mechanism and the automatic sampling mechanism, on the one hand, the first puncture tube and the second puncture tube can be controlled to enter or leave the liquid sampling tube and the gas sampling tube according to the different sampling media; on the other hand, the air pump module and the pressurizing piston are used to squeeze the gas and liquid into the gas sampling tube and the liquid sampling tube in turn, and the first puncture tube, the second puncture tube and the pressure-bearing piston rise or fall at the same time, so that when the gas sampling tube is sampled and the liquid sampling tube is sampled multiple times, the pressure-bearing piston can prevent the liquid from entering the liquid outlet tube when the first puncture tube is separated from the liquid sampling tube, thereby solving the problem that the gas decomposed from the water affects the detection result during the water quality sampling process and the decomposed gas cannot be automatically sampled separately, and has the characteristics of automatic separate sampling of gas and liquid samples and improved water quality sample detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 An exploded view of a water quality detection sampling device according to an embodiment of the present invention.

[0027] Figure 2 It is a three-dimensional diagram of the inner tube body of an embodiment of the present invention.

[0028] Figure 3 It is a planar cross-sectional view of the inner tube body of an embodiment of the present invention.

[0029] Figure 4 It is a planar cross-sectional view of the inner tube body, the air pump module, the pressurizing piston and the first electromagnet after being connected in an embodiment of the present invention.

[0030] Figure 5 It is a three-dimensional diagram of the gas-liquid separation mechanism according to an embodiment of the present invention.

[0031] Figure 6 It is a planar cross-sectional view of the inner tube body, the air pump module, the pressurizing piston, the first electromagnet, the gas-liquid separation mechanism, the return spring and the second electromagnet after being connected in an embodiment of the present invention.

[0032] Figure 7 It is a three-dimensional diagram of the automatic sampling mechanism according to an embodiment of the present invention.

[0033] Figure 8 It is a cross-sectional view of a water quality detection sampling device according to an embodiment of the present invention.

[0034] Fig. 9 It is a stereoscopic diagram of a water quality detection sampling device according to an embodiment of the present invention.

[0035] Fig.10 It is a front view of a water quality detection sampling device according to an embodiment of the present invention.

[0036] Figure numerals: 1-outer shell, 2-inner tube body, 21-water inlet pipe, 22-gas-liquid two-phase flow sensor, 23-liquid outlet pipe, 24-air outlet pipe, 25-first sealing plate, 26-second sealing plate, 27-annular guide rail, 28-waste discharge pipe, 29-pipe sleeve, 3-air pump module, 31-first air guide pipe, 32-second air guide pipe, 4-gas-liquid separation mechanism, 41-pressure piston, 42-magnet ring, 43-bent rod, 44-first longitudinal frame, 45-first A puncture tube, 46-a second puncture tube, 47-a limit block, 5-a pressurizing piston, 6-a first electromagnet, 7-an automatic sampling mechanism, 71-a driving unit, 72-a transmission gear ring, 73-a limit bite structure, 74-a second longitudinal frame, 75-an arc-shaped pipe sleeve, 8-a solenoid valve, 9-a pressure sensor, 10-a liquid sampling tube, 11-a gas sampling tube, 12-a control panel, 13-a take-out port, 14-a drain port, 15-a reset spring, 16-a second electromagnet. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0039] See also Figures 1 to 10 In one embodiment of the present invention, a water quality detection sampling device includes an outer shell 1 and further includes:

[0040] An inner tube body 2 fixedly connected to the inner side of the outer shell 1, a water inlet pipe 21, a liquid outlet pipe 23 and an air outlet pipe 24 are fixedly connected to the outer side of the inner tube body 2, the liquid outlet pipe 23 is located below the air outlet pipe 24, a gas-liquid two-phase flow sensor 22 is arranged on the surface of the water inlet pipe 21, the connection between the water inlet pipe 21 and the inner tube body 2 is distributed above the connection between the air outlet pipe 24 and the inner tube body 2, a first sealing plate 25 and a second sealing plate 26 are fixedly connected to the inner side of the inner tube body 2, the second sealing plate 26 is distributed above the connection between the water inlet pipe 21 and the inner tube body 2, and the first sealing plate 25 is distributed below the connection between the liquid outlet pipe 23 and the inner tube body 2;

[0041] An air pump module 3 disposed above the second sealing plate 26;

[0042] The pressurizing piston 5 is in sliding contact with the inner wall of the inner tube body 2, and the second sealing plate 26 is distributed above the pressurizing piston 5. The air pump module 3 adjusts the position of the pressurizing piston 5 by exhausting or vacuuming.

[0043] A first electromagnet 6 and a second electromagnet 16 are arranged above the first sealing plate 25;

[0044] The gas-liquid separation mechanism 4 includes a pressure-bearing piston 41, a magnet ring 42, a bent rod 43, a first longitudinal frame 44, a first puncture tube 45 and a second puncture tube 46. The bent rod 43 is fixedly connected between the pressure-bearing piston 41 and the first longitudinal frame 44. The magnet ring 42 is embedded in the surface of the pressure-bearing piston 41. The first puncture tube 45 and the second puncture tube 46 are respectively fixedly connected to the upper and lower ends of the first longitudinal frame 44. The first puncture tube 45 and the second puncture tube 46 are respectively movably connected in the liquid outlet pipe 23 and the gas outlet pipe 24;

[0045] An automatic sampling mechanism 7 that rotates with the inner tube body 2 as the axis, wherein arc-shaped tube sleeves 75 are provided on both upper and lower sides of the automatic sampling mechanism 7;

[0046] Solenoid valves 8 installed on the water inlet pipe 21, the liquid outlet pipe 23 and the air outlet pipe 24;

[0047] a return spring 15 connected between the pressure-bearing piston 41 and the first sealing plate 25;

[0048] The liquid sampling tube 10 and the gas sampling tube 11 are installed in the arc-shaped tube sleeves 75 on both sides. The gas sampling tube 11 is inverted in the arc-shaped tube sleeve 75 on the upper side, and the liquid sampling tube 10 is upright in the arc-shaped tube sleeve 75 on the lower side. Through holes are provided on the end surfaces of the two arc-shaped tube sleeves 75 at positions corresponding to the first puncture tube 45 and the second puncture tube 46.

[0049] See also Figure 4 Furthermore, a first air duct 31 and a second air duct 32 are fixedly connected to the surface of the air pump module 3 , the first air duct 31 passes through the second sealing plate 26 , and the second air duct 32 is connected to the pipe sleeve 29 at the upper end of the inner tube body 2 .

[0050] See also Figure 5 and Figure 6 Furthermore, the gas-liquid separation mechanism 4 also includes a limit block 47, and the bent rod 43 is fixedly connected to the limit block 47.

[0051] See also Figure 6 , further, it also includes a pressure sensor 9, which is installed below the second sealing plate 26.

[0052] In an embodiment of the present invention, when the first electromagnet 6 is energized, the limit block 47 fits against the end face of the sleeve 29 at the lower end of the inner tube body 2, so as to limit the longitudinal stroke of the first electromagnet 6. When the air pump module 3 discharges gas to the bottom of the second sealing plate 26, the pressure sensor 9 is used to monitor the air pressure exerted on the pressurizing piston 5, and the gas-liquid two-phase flow sensor 22 (CN201110208471.8 Sensor for velocity and gas content of gas-liquid two-phase flow discloses this prior art) is used to monitor whether the water quality sample contains gas.

[0053] See also Figure 7 and Figure 8 In one embodiment of the present invention, the automatic sampling mechanism 7 includes a driving portion 71, a transmission gear ring 72, a limit bite structure 73 and a second longitudinal frame 74, wherein the limit bite structure 73 is arranged on the inner side of the transmission gear ring 72, the transmission gear ring 72 is fixedly connected with the second longitudinal frame 74 on both the upper and lower sides, and the ends of the second longitudinal frame 74 on both the upper and lower sides are fixedly connected with arc-shaped pipe sleeves 75, the driving portion 71 is fixedly connected to the outer shell 1, and the transmission gear ring 72 is transmission-connected to the driving portion 71.

[0054] See also Figure 2 , Figure 6 and Figure 8 Furthermore, the upper and lower ends of the inner tube body 2 are fixedly connected with a pipe sleeve 29, the middle position of the outer side of the inner tube body 2 is fixedly connected with an annular guide rail 27, the bent rod 43 passes through the first sealing plate 25 and the pipe sleeve 29 at the lower end of the inner tube body 2, several of the limiting bite structures 73 are in sliding contact with the annular guide rail 27, and the first longitudinal frame 44 is distributed between the transmission gear ring 72 and the inner tube body 2.

[0055] In the embodiment of the present invention, the driving part 71 controls the arc-shaped sleeve 75 , the limiting engagement structure 73 and the second longitudinal frame 74 to rotate along the annular guide rail 27 through the transmission gear ring 72 .

[0056] See also Figure 2 , Figure 6 and Figure 8 In one embodiment of the present invention, a waste pipe 28 is fixedly connected to the outer side of the inner tube body 2, and the liquid outlet pipe 23 and the waste pipe 28 are symmetrically distributed about the axis of the inner tube body 2.

[0057] See also Figures 8 to 10 Furthermore, a control panel 12 and a take-in / take-out port 13 are provided on the surface of the outer shell 1, and the two take-in / take-out ports 13 are symmetrically distributed about the axis of the inner tube body 2. The positions of the water inlet pipe 21 and the air outlet pipe 24 correspond to the take-in / take-out port 13 on one side, and the positions of the water inlet pipe 21 and the waste pipe 28 correspond to the take-in / take-out port 13 on the other side.

[0058] See also Figure 8Furthermore, a drain port 14 is provided at the bottom of the outer shell 1 , and the waste pipe 28 is located directly above the drain port 14 .

[0059] In the embodiment of the present invention, after the water quality test is completed, clean water or cleaning agent is injected into the inner tube body 2 through the water inlet pipe 21 for cleaning, and the waste liquid after cleaning is discharged through the liquid outlet pipe 23, the waste discharge pipe 28 and the liquid discharge port 14.

[0060] A method for using a water quality detection sampling device, the specific steps comprising:

[0061] S100, in the initial state, the first electromagnet 6 and the second electromagnet 16 are controlled to be powered off, and the elastic force of the reset spring 15 controls the pressure-bearing piston 41 to be located above the connection between the liquid outlet tube 23 and the inner tube body 2. It should be noted that the upward elastic force of the reset spring 15 is greater than the gravity of the liquid in the inner tube body 2, and the first puncture tube 45 and the second puncture tube 46 are respectively located above and below the two through holes. In this way, when the automatic sampling mechanism 7 rotates, it will not interfere with the first puncture tube 45 and the second puncture tube 46. The staff inverts the gas sampling tube 11 in the upper arc tube sleeve 75 from the access port 13, and stands the liquid sampling tube 10 upright in the lower arc tube sleeve 75 until all the arc tube sleeves 75 are filled with gas sampling tubes 11 and liquid sampling tubes 10;

[0062] S200, control the first electromagnet 6 to be energized, and the magnetic repulsion force between the energized first electromagnet 6 and the magnet ring 42 controls the pressure-bearing piston 41, the first puncture tube 45 and the second puncture tube 46 to move upward, the first puncture tube 45 shrinks upward into the liquid outlet tube 23, and the second puncture tube 46 enters the gas sampling tube 11 through the through hole;

[0063] S300, connect the water inlet pipe 21 to the liquid pump, control the solenoid valve 8 of the water inlet pipe 21 to open, control a certain amount of water sample to enter the inner tube body 2 through the water inlet pipe 21 or control the liquid level in the inner tube body 2 to be 3cm-5cm lower than the connection between the gas outlet pipe 24 and the inner tube body 2, and the gas-liquid two-phase flow sensor 22 is used to monitor whether there is gas in the water sample;

[0064] S400, when the water sample contains gas, let it stand for several hours, control the solenoid valve 8 of the water inlet pipe 21 to close, control the solenoid valve 8 on the air outlet pipe 24 to open, control the air pump module 3 to exhaust gas to achieve the purpose of controlling the pressurizing piston 5 to move downward, the pressure sensor 9 is used to monitor the gas pressure on the pressurizing piston 5, so as to control the downward movement distance and exhaust volume of the pressurizing piston 5, and the pressurizing piston 5 moving downward squeezes the gas sample into the gas sampling tube 11 through the air outlet pipe 24 and the second puncture tube 46;

[0065] S500, control the first electromagnet 6 to be powered off, and control the second electromagnet 16 to be powered on. The magnetic attraction between the second electromagnet 16 and the magnet ring 42 after being powered on overcomes the upward elastic force of the reset spring 15, so that the pressure-bearing piston 41, the first puncture tube 45 and the second puncture tube 46 can be controlled to move downward. When the magnet ring 42 fits with the second electromagnet 16, the pressure-bearing piston 41 is located above the connection between the liquid outlet tube 23 and the inner tube body 2, the first puncture tube 45 enters the liquid sampling tube 10 through the through hole, and the second puncture tube 46 is separated from the gas sampling tube 11 and the through hole. The solenoid valve 8 of the water inlet pipe 21 is controlled to be opened, and the solenoid valve 8 on the gas outlet pipe 24 is controlled to be closed to prevent gas backflow;

[0066] S600, continue to use the air pump module 3 to control the downward movement distance of the pressurizing piston 5 to achieve the purpose of injecting the quantitative liquid sample into the liquid sampling tube 10 through the liquid outlet tube 23 and the first puncture tube 45;

[0067] S700. Based on the diversity of the number of liquid samples and the low gas content in the water quality samples, the volume of the gas samples is small, and generally only one gas sampling tube 11 is needed to complete the collection. The first puncture tube 45 and the second puncture tube 46 are separated from the two through holes respectively by using the step of S100. The driving part 71 controls the automatic sampling mechanism 7 to rotate 45 degrees or 60 degrees around the inner tube body 2 by means of a transmission connection with the transmission gear ring 72, so that the empty liquid sampling tube 10 and the gas sampling tube 11 are realigned with the first puncture tube 45 and the second puncture tube 46. The liquid sample is injected into the liquid sampling tube 10 by using the steps described in S500 and S600. Sampling is stopped when the liquid sample is injected into 3 or 5 liquid sampling tubes 10, and the air pump module 3 is used to move the pressurizing piston 5 upward and reset it by means of vacuum extraction.

[0068] When the gas-liquid two-phase flow sensor 22 is used to monitor that the water quality sample does not contain gas or contains very little gas, the steps S500 to S700 are used to collect the liquid sample.

[0069] In summary, on the basis of arranging the water inlet pipe 21, the liquid outlet pipe 23 and the air outlet pipe 24 on the surface of the inner tube body 2, the structural design of the air pump module 3, the pressurizing piston 5, the first electromagnet 6, the second electromagnet 16, the return spring 15, the gas-liquid separation mechanism 4 and the automatic sampling mechanism 7 is coordinated. On the one hand, the first puncture tube 45 and the second puncture tube 46 can be controlled to enter or leave the liquid sampling tube 10 and the gas sampling tube 11 according to the different sampling media; on the other hand, the air pump module 3 and the pressurizing piston 5 are used to squeeze the gas and liquid into the gas sampling tube 10 in sequence. 1 and the liquid sampling tube 10, the first puncture tube 45, the second puncture tube 46 and the pressure-bearing piston 41 rise or fall at the same time, so that when the gas sampling tube 11 is sampled and the liquid sampling tube 10 is sampled multiple times, the pressure-bearing piston 41 can prevent the liquid from entering the liquid outlet tube 23 when the first puncture tube 45 is separated from the liquid sampling tube 10, thereby solving the problem that the gas decomposed from the water affects the detection result during the water quality sampling process and the decomposed gas cannot be automatically sampled separately, and has the characteristics of automatically sampling gas and liquid samples separately and improving the detection accuracy of water quality samples.

[0070] For those skilled in the art, although several embodiments and examples of the present invention have been described, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the main purpose of the invention.

[0071] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A water quality detection sampling device, comprising an outer shell (1), characterized in that: Also includes: An inner tube body (2) fixedly connected to the inner side of the outer tube body (1), a water inlet pipe (21), a liquid outlet pipe (23) and an air outlet pipe (24) fixedly connected to the outer side of the inner tube body (2), the liquid outlet pipe (23) being located below the air outlet pipe (24), a gas-liquid two-phase flow sensor (22) being arranged on the surface of the water inlet pipe (21), a connection between the water inlet pipe (21) and the inner tube body (2) being located above a connection between the air outlet pipe (24) and the inner tube body (2), a first sealing plate (25) and a second sealing plate (26) being fixedly connected to the inner side of the inner tube body (2), the second sealing plate (26) being located above a connection between the water inlet pipe (21) and the inner tube body (2), and the first sealing plate (25) being located below a connection between the liquid outlet pipe (23) and the inner tube body (2); An air pump module (3) disposed above the second sealing plate (26); A pressurizing piston (5) in sliding contact with the inner wall of the inner tube body (2), the second sealing plate (26) being distributed above the pressurizing piston (5), and the air pump module (3) achieving the purpose of adjusting the position of the pressurizing piston (5) by exhausting or evacuating air; A first electromagnet (6) and a second electromagnet (16) disposed above the first sealing plate (25); A gas-liquid separation mechanism (4), the gas-liquid separation mechanism (4) comprising a pressure-bearing piston (41), a magnet ring (42), a bent rod (43), a first longitudinal frame (44), a first puncture tube (45) and a second puncture tube (46), the bent rod (43) being fixedly connected between the pressure-bearing piston (41) and the first longitudinal frame (44), the magnet ring (42) being embedded in the surface of the pressure-bearing piston (41), the first puncture tube (45) and the second puncture tube (46) being fixedly connected to the upper and lower ends of the first longitudinal frame (44), respectively, and the first puncture tube (45) and the second puncture tube (46) being movably connected to the liquid outlet pipe (23) and the gas outlet pipe (24), respectively; An automatic sampling mechanism (7) which rotates with the inner tube body (2) as an axis, wherein arc-shaped tube sleeves (75) are provided on both upper and lower sides of the automatic sampling mechanism (7); Solenoid valves (8) installed on the water inlet pipe (21), the liquid outlet pipe (23) and the air outlet pipe (24); a return spring (15) connected between the pressure-bearing piston (41) and the first sealing plate (25); A liquid sampling tube (10) and a gas sampling tube (11) are installed in the arc-shaped tube sleeves (75) on both sides. The gas sampling tube (11) is inverted in the arc-shaped tube sleeve (75) on the upper side, and the liquid sampling tube (10) is upright in the arc-shaped tube sleeve (75) on the lower side. Through holes are provided on the end surfaces of the two arc-shaped tube sleeves (75) at positions corresponding to the first puncture tube (45) and the second puncture tube (46).

2. A water quality detection sampling device according to claim 1, characterized in that: The automatic sampling mechanism (7) comprises a driving part (71), a transmission gear ring (72), a position-limiting engaging structure (73) and a second longitudinal frame (74); the position-limiting engaging structure (73) is arranged on the inner side of the transmission gear ring (72); the transmission gear ring (72) is fixedly connected to the second longitudinal frame (74) on both upper and lower sides; the ends of the second longitudinal frame (74) on both upper and lower sides are fixedly connected to arc-shaped pipe sleeves (75); the driving part (71) is fixedly connected to the outer shell (1); and the transmission gear ring (72) is transmission-connected to the driving part (71).

3. A water quality detection sampling device according to claim 2, characterized in that: The upper and lower ends of the inner tube body (2) are fixedly connected to a tube sleeve (29); the middle position of the outer side of the inner tube body (2) is fixedly connected to an annular guide rail (27); the bent rod (43) passes through the first sealing plate (25) and the tube sleeve (29) at the lower end of the inner tube body (2); a plurality of the position-limiting engaging structures (73) are in sliding contact with the annular guide rail (27); and the first longitudinal frame (44) is distributed between the transmission gear ring (72) and the inner tube body (2).

4. A water quality detection sampling device according to claim 1, characterized in that: The outer side of the inner tube body (2) is also fixedly connected to a waste discharge pipe (28), and the liquid outlet pipe (23) and the waste discharge pipe (28) are symmetrically distributed about the axis of the inner tube body (2).

5. A water quality detection sampling device according to claim 3, characterized in that: A first air guide tube (31) and a second air guide tube (32) are fixedly connected to the surface of the air pump module (3); the first air guide tube (31) passes through the second sealing plate (26); and the second air guide tube (32) is connected to a tube sleeve (29) at the upper end of the inner tube body (2).

6. A water quality detection sampling device according to claim 1, characterized in that: The gas-liquid separation mechanism (4) further comprises a limit block (47), the bent rod (43) being fixedly connected to the limit block (47), and when the first electromagnet (6) is energized, the limit block (47) is in contact with the end surface of the sleeve (29) at the lower end of the inner tube body (2).

7. A water quality detection sampling device according to claim 1, characterized in that: The device also comprises a pressure sensor (9), wherein the pressure sensor (9) is installed below the second sealing plate (26).

8. A water quality detection sampling device according to claim 1, characterized in that: The outer shell (1) is provided with a control panel (12) and a take-in / take-out port (13) on its surface. The two take-in / take-out ports (13) are symmetrically distributed about the axis of the inner tube body (2). The positions of the water inlet pipe (21) and the air outlet pipe (24) correspond to the take-in / take-out port (13) on one side, and the positions of the water inlet pipe (21) and the waste discharge pipe (28) correspond to the take-in / take-out port (13) on the other side.

9. A water quality detection sampling device according to claim 4, characterized in that: The bottom of the outer shell (1) is provided with a liquid discharge port (14), and the waste discharge pipe (28) is located directly above the liquid discharge port (14).

10. A method for using a water quality detection sampling device, applied to a water quality detection sampling device as claimed in any one of claims 1 to 9, characterized in that: The specific steps include: S100, in the initial state, the first electromagnet (6) and the second electromagnet (16) are controlled to be powered off, the elastic force of the return spring (15) controls the pressure-bearing piston (41) to be located above the connection between the liquid outlet tube (23) and the inner tube body (2), the first puncture tube (45) and the second puncture tube (46) are respectively located above and below the two through holes, the gas sampling tube (11) is inverted in the upper arc-shaped tube sleeve (75), and the liquid sampling tube (10) is upright in the lower arc-shaped tube sleeve (75); S200, controlling the first electromagnet (6) to be energized, the magnetic repulsion force between the energized first electromagnet (6) and the magnet ring (42) controls the pressure-bearing piston (41), the first puncture tube (45) and the second puncture tube (46) to move upward, the first puncture tube (45) shrinks upward into the liquid outlet tube (23), and the second puncture tube (46) enters the gas sampling tube (11) through the through hole; S300, connecting the water inlet pipe (21) to a liquid pump, controlling the electromagnetic valve (8) of the water inlet pipe (21) to open, controlling a certain amount of water quality sample to enter the inner tube body (2) through the water inlet pipe (21) or controlling the liquid level in the inner tube body (2) to be 3 cm to 5 cm lower than the connection between the gas outlet pipe (24) and the inner tube body (2), and the gas-liquid two-phase flow sensor (22) is used to monitor whether the water quality sample contains gas; S400, when the water sample contains gas, the water sample is left to stand for several hours, the solenoid valve (8) of the water inlet pipe (21) is controlled to be closed, the solenoid valve (8) on the air outlet pipe (24) is controlled to be opened, and the air pump module (3) is controlled to exhaust gas to achieve the purpose of controlling the pressurizing piston (5) to move downward, and the pressurizing piston (5) moving downward squeezes the gas sample into the gas sampling tube (11) through the air outlet pipe (24) and the second puncture tube (46); S500, control the first electromagnet (6) to be powered off, control the second electromagnet (16) to be powered on, and the magnetic attraction between the second electromagnet (16) and the magnet ring (42) after being powered on controls the pressure-bearing piston (41), the first puncture tube (45) and the second puncture tube (46) to move downward, and when the magnet ring (42) and the second electromagnet (16) are in contact, the pressure-bearing piston (41) is located above the connection between the liquid outlet tube (23) and the inner tube body (2), the first puncture tube (45) enters the liquid sampling tube (10) through the through hole, and the second puncture tube (46) is separated from the gas sampling tube (11) and the through hole; S600, continue to use the air pump module (3) to control the pressurizing piston (5) to inject the liquid sample into the liquid sampling tube (10) through the liquid outlet tube (23) and the first puncture tube (45); S700. Based on the diversity of the number of liquid samples and the low gas content in the water quality samples, the first puncture tube (45) and the second puncture tube (46) are separated from the two through holes respectively using the step described in S100, and the automatic sampling mechanism (7) is controlled to rotate 45 degrees or 60 degrees with the inner tube body (2) as the axis, so that the empty liquid sampling tube (10) and the gas sampling tube (11) are realigned with the first puncture tube (45) and the second puncture tube (46), and the liquid sample is injected into the liquid sampling tube (10) using the steps described in S500 and S600, and sampling is stopped when the liquid sample is injected into 3 or 5 liquid sampling tubes (10).

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