Salt lake brine volatile organic compound collecting and detecting device

Abstract

The invention belongs to the technical field of salt lake brine collection, and particularly relates to a salt lake brine volatile organic compound collection and detection device. Comprising a mixing box, and the side wall of the mixing box fixedly communicates with the bottom of an annular water tank through a plurality of water pipes; the bottom of the mixing box is fixedly communicated with the top of the collecting box through an adapter pipe; a solid-phase extraction column is mounted in the collecting box, and a micro water pump is mounted at the bottom of the collecting box in a communicating manner; an electronic valve and a flow sensor are mounted on the adapter tube; volatilization of volatile organic compounds in the salt lake brine in the collecting process is reduced, and the problem of blockage in the collecting process due to the fact that the concentration of the salt lake brine is too high can be solved; the problem that the concentration of salt lake brine is too high to cause blockage in the collection process is solved, and meanwhile it is guaranteed that the concentration of the salt lake brine is not too low when the salt lake brine is collected, so that collection work of volatile organic compounds is not affected; the device is suitable for collection of salt lake brine organic matters with unknown concentration.

Description

Technical Field

[0001] The invention belongs to the technical field of salt lake brine collection, and in particular relates to a salt lake brine volatile organic matter collection and detection device. Background Art

[0002] Salt lake brine refers to a highly mineralized aqueous solution in a salt lake, which is rich in potassium, lithium, magnesium, sodium and other chemical elements. As an important carrier of mineral resources, salt lake brine has important strategic significance in the supply of industrial raw materials and the development of new energy materials in my country. With the rapid development of the new energy industry, the demand for lithium resources is increasing, and the development and utilization of lithium resources in salt lake brine has become one of the important sources of supply.

[0003] During the mineralization process of salt lakes, various volatile organic compounds (VOCs) are formed in salt lake brines due to the influence of factors such as biodegradation and geological activities. These volatile organic compounds may come from biological metabolites, organic matter degradation, and deep fluid migration during geological tectonic activities. Studies have shown that the types, contents, and distribution characteristics of volatile organic compounds in salt lake brines are closely related to the mineralization environment and degree of mineralization. Therefore, the systematic collection and detection of volatile organic compounds in salt lake brines can provide important geochemical indication information for the exploration of salt lake mineral resources.

[0004] Traditional salt lake brine exploration mainly relies on hydrogeological surveys, geophysical surveys and other methods. Although these methods are reliable, they are often time-consuming and costly. Volatile organic compound detection can be used as an auxiliary means to quickly obtain chemical characteristic information of salt lake brine, providing a scientific basis for optimizing exploration targets and determining mining plans. Especially in the stage of large-scale salt lake resource surveys, volatile organic compound detection can be used as an important means of rapid screening to improve exploration efficiency and reduce exploration costs.

[0005] A Chinese patent with application number 202411203716.1 discloses a self-sealing device for sampling brine from a salt lake based on a drone, comprising a drone body and a self-sealing device, wherein the self-sealing device comprises an upper bottle cap, a middle bottle cap, a lower bottle cap, a bottle body, a bottle bottom and a piston body for sealing after taking water; the middle part of the bottle cap is a circular gasket, and the middle part of the radius of the circular gasket has a liquid level detection metal rod that passes through from top to bottom and has been insulated and plugged; the patent is based on the process of drone sampling of lake water, which can realize automatic sampling of lake water, and self-seal the sample after sampling to avoid the situation that the sample tilts and overflows during the driving of the drone, increase the stability and sealing of lake water sampling, have a simple structure and low cost, and except for the use of a relay in the power-on instantaneous detection module, do not use other sensors and their matching radio signal transmitting devices, and the drone body can increase the number of suspended sampling self-sealing devices to achieve the effect of completing multi-point independent sampling in one flight.

[0006] In the existing sampling and collection of salt lake brine, the surface brine is usually sampled, so that volatile organic compounds are easily volatilized, resulting in inaccurate detection of organic compounds; at the same time, when the salt lake brine is adsorbed and collected by solid phase extraction columns, due to the high salt content of the salt lake brine, the solid phase extraction columns are easily blocked, resulting in difficulty in collection. If water is used for dilution, the following problems will occur: first, the concentration of the salt lake brine is reduced too low, resulting in inaccurate detection of volatile organic compounds; second, the dilution process is usually carried out separately after the brine is collected, which will cause the loss of volatile organic compounds in the sampled salt lake brine; and, when sampling and collecting salt lake brine of unknown concentration, it is impossible to quickly determine whether it needs to be diluted with water, resulting in difficulty in collection. Summary of the invention

[0007] In order to solve the deficiencies in the prior art, the present invention provides a salt lake brine volatile organic matter collection and detection device. The present invention reduces the volatilization of volatile organic matter in the salt lake brine during the collection process and prevents the blockage problem caused by excessively high concentration of the salt lake brine during the collection process through the cooperation of a collection box, an annular water tank, a mixing box and a connecting pipe mechanism; the present invention avoids the blockage problem caused by excessively high concentration of the salt lake brine during the collection process and ensures that the concentration of the salt lake brine when being collected is not too low to affect the collection of volatile organic matter through the cooperation of a control mechanism, a connecting pipe mechanism and a mixing box. The present invention is suitable for the collection of organic matter in salt lake brine of unknown concentration through the cooperation of a control mechanism, a connecting pipe mechanism and a mixing box.

[0008] In order to achieve the above object, the present invention adopts the following technical solution:

[0009] A salt lake brine volatile organic matter collection and detection device comprises a mixing box, the side wall of which is fixedly connected to the bottom of an annular water tank through a plurality of water pipes; the bottom of the mixing box is fixedly connected to the top of the collection box through a transfer tube; a solid phase extraction column is installed inside the collection box, and a micro water pump is installed at the bottom of the collection box; an electronic valve and a flow sensor are installed on the transfer tube;

[0010] The tops of the collection box, the annular water tank, and the mixing box are fixedly connected together through a connecting pipe mechanism; the top of the connecting pipe mechanism is fixedly connected to a vent cylinder, one end of which is located above the collected water body;

[0011] An electric telescopic rod is fixedly installed on the top of the ventilation cylinder, a control mechanism is slidably connected inside the ventilation cylinder, and one end of the electric telescopic rod is fixedly connected to the control mechanism for controlling the opening and closing of the connecting pipe mechanism.

[0012] Furthermore, the control mechanism includes a sliding rod, the two ends of the sliding rod respectively pass through the corresponding two ends of the ventilation cylinder; the sliding rod is fixedly connected to a sealing plug, and the sealing plug is slidably connected to the inside of the ventilation cylinder; the lower end of the sliding rod is fixedly connected to a sliding tube, the upper end of the sliding tube is closed, and the side wall of the sliding tube is evenly provided with a plurality of first connecting holes; the lower end of the sliding tube is fixedly connected to a sealing cover, and a plurality of filter holes are provided on the top of the sealing cover.

[0013] Furthermore, the top of the mixing box is fixedly connected with a liquid inlet pipe, and the side wall of the liquid inlet pipe is evenly opened with multiple second connecting holes; the sliding tube is slidably connected to the inner wall of the liquid inlet pipe up and down; the sealing cover is slidably connected to the inner wall of the mixing box.

[0014] Furthermore, when the sealing plug does not close the connecting pipe mechanism, the first connecting hole is connected to the second connecting hole and the sealing cover closes the water pipe; when the sealing plug closes the connecting pipe mechanism, the first connecting hole is misaligned and not connected to the second connecting hole and the sealing cover does not close the water pipe.

[0015] Furthermore, the connecting pipe mechanism includes an n-type tube 1 and a n-type tube 2, the two ends of the n-type tube 1 are respectively fixedly connected to the top of the collection box and the top of the mixing box; the two ends of the n-type tube 2 are respectively fixedly connected to the top of the n-type tube 1 and the top of the annular water tank; the top of the n-type tube 2 is fixedly connected to the side wall of the ventilation cylinder through a branch pipe.

[0016] Furthermore, there are multiple connecting pipe mechanisms, which are evenly distributed around the mixing box.

[0017] Furthermore, a water inlet is fixedly provided on the top of the annular water tank, and a valve is installed on the water inlet.

[0018] Furthermore, a plurality of ventilation mesh holes are provided at the upper end of the ventilation cylinder, a bracket is fixedly connected to the upper end of the ventilation cylinder, and the electric telescopic rod is fixedly installed on the bracket; an operating panel is fixedly provided on the outer side of the ventilation cylinder.

[0019] Furthermore, a box opening is opened on one side of the collection box, and an insulation box is sealed and inserted on the box opening; a accommodating groove is penetrated on the insulation box for accommodating a solid phase extraction column; the top of the collection box is fixedly connected to the intermediate tube, and the top of the intermediate tube is fixedly connected to the transfer tube; the bottom of the collection box is connected and installed with a micro water pump through an L-shaped tube.

[0020] The present invention also claims protection for a collection method using the above-mentioned salt lake brine volatile organic compound collection and detection device, comprising the following steps:

[0021] S1. Place the device in salt lake brine. The salt lake brine enters the mixing box from the first connecting hole and the second connecting hole and is filtered by the filter hole of the sealing cover. The salt lake brine enters the collection box through the transfer tube. The micro water pump is started to adsorb and discharge the salt lake brine through the solid phase extraction column.

[0022] S2. When the flow sensor detects that the collection box is blocked, the electric telescopic rod is started to shrink, so that the sealing plug closes the connecting pipe mechanism. At this time, the first connecting hole and the second connecting hole are misaligned and not connected, and the sealing cover does not close the water pipe; the salt lake brine no longer flows into the mixing box, and the water in the annular water tank enters the mixing box and the collection box from the water pipe to flush and dilute, so that the collection box is restored to be unobstructed;

[0023] S3. When the flow sensor detects that the flow is unblocked, the electronic valve is closed, and the electric telescopic rod is controlled to extend, so that the first connecting hole and the second connecting hole are partially connected, and the water pipe outlet is partially connected, thereby controlling the ratio of the mixing box water and the salt lake brine to enter for dilution, and after dilution, the electronic valve is opened for subsequent collection;

[0024] S4. After the collection is completed, close the electronic valve, control the electric telescopic rod to extend to close the water pipe, and take the equipment out of the salt lake brine.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) The present invention reduces the volatilization of volatile organic matter in the salt lake brine during the collection process and prevents the blockage problem caused by the excessive concentration of the salt lake brine during the collection process through the cooperation of the collection box, the annular water tank, the mixing box and the connecting pipe mechanism; specifically, when collecting the salt lake brine, the device is placed in the salt lake brine so that the internal brine can be collected, and the connection with the external air through the connecting pipe mechanism allows the salt lake brine to smoothly enter the mixing box and the collection box in turn for multiple treatments, avoiding the air pressure problem that causes the salt lake brine to be unable to circulate smoothly, and through the micro water pump The device can realize the dilution of salt lake brine in the mixing box, the adsorption and extraction by the solid phase extraction column in the collection box, and finally the discharge by the micro water pump, thereby finally realizing the closed sampling, dilution and collection of salt lake brine in the water body throughout the whole process; at the same time, since the device is operated inside the water body of salt lake brine, the device is almost in a closed space during the whole process of sampling, dilution and collection, which not only reduces the volatilization of volatile organic matter in the salt lake brine during the collection process, but also can dilute it inside the water body of salt lake brine at the same time, preventing the blockage problem in the collection process caused by excessive concentration of salt lake brine.

[0027] (2) The present invention avoids the problem of blockage during the collection process caused by excessively high concentration of salt lake brine through the coordination of the control mechanism with the connecting pipe mechanism and the mixing box, and at the same time ensures that the concentration of salt lake brine when being collected is not too low to affect the collection of volatile organic compounds; specifically, when the flow sensor detects that the collection box is blocked, the electric telescopic rod is started to retract, so that the sealing plug closes the connecting pipe mechanism. At this time, the first connecting hole and the second connecting hole are misaligned and not connected, and the sealing cover does not close the water pipe; the salt lake brine no longer flows into the mixing box, and the water in the annular water tank enters the mixing box and the collection box from the water pipe to flush and dilute the salt, so that the collection box is restored to unobstructed; it avoids the problem of blockage during the collection process caused by excessively high concentration of salt lake brine, and at the same time, solves the blockage problem by first using a solid phase extraction column for adsorption and then flushing and diluting the salt, ensuring that the concentration of salt lake brine when being collected is not too low to affect the collection of volatile organic compounds.

[0028] (3) The present invention is suitable for the collection of organic matter in salt lake brine of unknown concentration by cooperating with the control mechanism, the connecting pipe mechanism and the mixing box. Specifically, when the concentration of the salt lake brine is low, the salt lake brine can be passed through the mixing box and the collection box in sequence. When the concentration of the salt lake brine is high, salt precipitation and other problems may occur, resulting in blockage. At this time, the control mechanism is used to flush and dilute the brine to restore the smooth flow. Then, the ratio of the water in the mixing box and the salt lake brine is controlled to dilute the brine. This ensures that the concentration of the salt lake brine is not too low when it is collected, and does not respond to the collection of volatile organic matter, thereby achieving continuous collection and avoiding frequent blockages. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of a device for collecting and detecting volatile organic compounds in salt lake brine according to the present invention;

[0030] Figure 2 This is a schematic diagram of the dispersed structure of a device for collecting and detecting volatile organic compounds in salt lake brine of the present invention;

[0031] Figure 3 It is a schematic cross-sectional structure diagram of a device for collecting and detecting volatile organic compounds in salt lake brine of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of an annular water tank of a salt lake brine volatile organic matter collection and detection device of the present invention;

[0033] Figure 5 This is a partial structural diagram of a salt lake brine volatile organic compound collection and detection device of the present invention. Figure 1 ;

[0034] Figure 6 This is a partial structural diagram of a salt lake brine volatile organic compound collection and detection device of the present invention. Figure 2;

[0035] Figure 7 This is a schematic diagram of the partial dispersed structure of a salt lake brine volatile organic compound collection and detection device of the present invention. Figure 1 ;

[0036] Figure 8 This is a schematic diagram of the partial dispersed structure of a salt lake brine volatile organic compound collection and detection device of the present invention. Figure 2 .

[0037] The reference numerals are as follows:

[0038] 100-annular water tank, 110-water inlet, 120-water pipe, 200-mixing box, 210-liquid inlet pipe, 220-second connecting hole, 300-collection box, 310-insulation box, 320-accommodation tank, 330-intermediate tube, 340-transfer tube, 400-micro water pump, 410-L-type tube, 500-ventilation cylinder, 510-ventilation mesh, 520-operating panel, 600-electric telescopic rod, 610-bracket, 700-control mechanism, 710-sliding rod, 720-sealing plug, 730-sliding tube, 731-first connecting hole, 740-sealing cover, 800-connecting pipe mechanism, 810-type n-type tube one, 820-type n-type tube two, 830-branch pipe, 900-solid phase extraction column. DETAILED DESCRIPTION

[0039] 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 embodiments. Of course, the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0040] Although the steps in the present invention are arranged with numbers, they are not used to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a certain step requires other steps as a basis, the relative order of the steps can be adjusted. It is understood that the term "and / or" used in this article involves and covers any and all possible combinations of one or more of the associated listed items.

[0041] Example

[0042] like Figures 1 to 8 As shown, a salt lake brine volatile organic matter collection and detection device comprises a mixing box 200, the side wall of the mixing box 200 is fixedly connected to the bottom of the annular water tank 100 through a plurality of water pipes 120; the bottom of the mixing box 200 is fixedly connected to the top of the collection box 300 through a transfer tube 340; a solid phase extraction column 900 is installed inside the collection box 300, and a micro water pump 400 is installed at the bottom of the collection box 300; an electronic valve and a flow sensor are installed on the transfer tube 340;

[0043] It is worth noting that the micro water pump 400, electronic valve and other power equipment of the present invention are all powered by an external power supply, and the flow sensor can monitor the flow rate, which are all prior art and will not be described in detail here;

[0044] The tops of the collection box 300, the annular water tank 100, and the mixing box 200 are fixedly connected together through a connecting pipe mechanism 800; the top of the connecting pipe mechanism 800 is fixedly connected to a ventilator 500, and one end of the ventilator 500 is located above the collected water body;

[0045] An electric telescopic rod 600 is fixedly installed on the top of the ventilation cylinder 500, and a control mechanism 700 is slidably connected inside the ventilation cylinder 500. One end of the electric telescopic rod 600 is fixedly connected to the control mechanism 700 for controlling the opening and closing of the connecting pipe mechanism 800.

[0046] The present invention reduces the volatilization of volatile organic matter in the salt lake brine during the collection process and prevents the blockage problem caused by the excessive concentration of the salt lake brine during the collection process through the cooperation of the collection box 300, the annular water tank 100, the mixing box 200 and the connecting pipe mechanism 800; specifically, when collecting the salt lake brine, the device is placed in the salt lake brine so that the internal brine can be collected, and the connection with the external air through the connecting pipe mechanism 800 allows the salt lake brine to smoothly enter the mixing box 200 and the collection box 300 in turn for multiple treatments, thereby avoiding the air pressure problem that causes the salt lake brine to be unable to circulate smoothly, and the brine is discharged through the micro water pump 4. 00, the salt lake brine is diluted in the mixing box 200, adsorbed and extracted by the solid phase extraction column 900 in the collection box 300, and finally discharged by the micro water pump 400, thereby finally realizing the closed sampling, dilution and collection of the salt lake brine in the water body throughout the whole process; at the same time, since the device is operated inside the water body of the salt lake brine, the device is almost in a closed space during the whole process of sampling, dilution and collection, which not only reduces the volatilization of volatile organic matter in the salt lake brine during the collection process, but also can dilute it inside the water body of the salt lake brine at the same time, preventing the salt lake brine concentration from being too high and causing blockage during the collection process.

[0047] Furthermore, the control mechanism 700 includes a sliding rod 710, and the two ends of the sliding rod 710 respectively pass through the corresponding two ends of the ventilation cylinder 500; the sliding rod 710 is fixedly connected to a sealing plug 720, and the sealing plug 720 is slidably connected to the inside of the ventilation cylinder 500; the lower end of the sliding rod 710 is fixedly connected to a sliding tube 730, the upper end of the sliding tube 730 is closed, and the side wall of the sliding tube 730 is evenly provided with a plurality of first connecting holes 731; the lower end of the sliding tube 730 is fixedly connected to a sealing cover 740, and a plurality of filter holes are provided on the top of the sealing cover 740.

[0048] Furthermore, the top of the mixing box 200 is fixedly connected to a liquid inlet pipe 210, and the side wall of the liquid inlet pipe 210 is evenly provided with a plurality of second connecting holes 220; the sliding tube 730 is slidably connected to the inner wall of the liquid inlet pipe 210 up and down; and the sealing cover 740 is slidably connected to the inner wall of the mixing box 200.

[0049] Furthermore, when the sealing plug 720 does not close the connecting pipe mechanism 800, the first connecting hole 731 is connected to the second connecting hole 220, and the sealing cover 740 closes the water pipe 120; when the sealing plug 720 closes the connecting pipe mechanism 800, the first connecting hole 731 is misaligned and not connected to the second connecting hole 220, and the sealing cover 740 does not close the water pipe 120.

[0050] The present invention avoids the blockage problem caused by the excessive concentration of salt lake brine during the collection process by cooperating with the control mechanism 700, the connecting pipe mechanism 800 and the mixing box 200, and at the same time ensures that the concentration of the salt lake brine when being collected is not too low to affect the collection of volatile organic compounds; specifically, when the flow sensor detects that the collection box 300 is blocked, the electric telescopic rod 600 is started to shrink, so that the sealing plug 720 closes the connecting pipe mechanism 800, at this time, the first connecting hole 731 and the second connecting hole 220 are misaligned and not connected, and the sealing cover 740 does not close the water pipe 120; the salt lake brine no longer flows into the mixing box 200, and the sealing cover 740 does not close the water pipe 120; the salt lake brine no longer flows into the mixing box 200, and the sealing cover 740 does not close the water pipe 120. The mixing box 200 and the top of the annular water tank 100 are connected through the connecting pipe mechanism 800, and the water of the annular water tank 100 can enter the mixing box 200 and the collecting box 300 from the water pipe 120 to flush and dilute the salt, so that the collecting box 300 is restored to be unobstructed; it not only avoids the blockage problem caused by the excessive concentration of salt lake brine in the collection process, but also solves the blockage problem by first adsorbing with a solid phase extraction column 900 and then flushing and diluting the salt, ensuring that the concentration of the salt lake brine when being collected is not too low, thereby affecting the collection of volatile organic compounds.

[0051] Furthermore, the connecting pipe mechanism 800 includes an n-type tube 1 810 and an n-type tube 2 820, the two ends of the n-type tube 1 810 are respectively fixedly connected to the top of the collection box 300 and the top of the mixing box 200; the two ends of the n-type tube 2 820 are respectively fixedly connected to the top of the n-type tube 1 810 and the top of the annular water tank 100; the top of the n-type tube 2 820 is fixedly connected to the side wall of the ventilation cylinder 500 through a branch pipe 830.

[0052] The annular water tank 100, the mixing tank 200 and the top of the collection tank 300 are all connected through the connecting pipe mechanism 800, so that the salt lake brine can flow smoothly in the device located inside the collected water body.

[0053] Furthermore, there are multiple connecting pipe mechanisms 800, and they are evenly distributed around the mixing box 200. The multiple connecting pipe mechanisms 800 not only achieve the connecting function, but also serve as a support, thereby improving the overall stability of the equipment.

[0054] Furthermore, a water inlet 110 is fixedly provided on the top of the annular water tank 100, and a valve is installed on the water inlet 110. The water inlet 110 and the valve facilitate the water replenishment operation of the annular water tank 100. When the device is collecting, the valve is closed; when the device is in an idle state, the water replenishment operation can be performed through the water inlet 110.

[0055] Furthermore, a plurality of ventilation mesh holes 510 are provided at the upper end of the aeration cylinder 500, a bracket 610 is fixedly connected to the upper end of the aeration cylinder 500, and the electric telescopic rod 600 is fixedly mounted on the bracket 610; an operating panel 520 is fixedly provided on the outer side of the aeration cylinder 500. The operating panel 520 is conveniently connected to external ropes and other equipment, so that the whole device can be conveniently placed in the water body to be collected.

[0056] Furthermore, a box opening is provided on one side of the collection box 300, and a heat preservation box 310 is sealed and plugged into the box opening; a receiving groove 320 is provided through the heat preservation box 310 for receiving the solid phase extraction column 900; the top of the collection box 300 is fixedly connected to the intermediate tube 330, and the top of the intermediate tube 330 is fixedly connected to the transfer tube 340; the bottom of the collection box 300 is connected and installed with the micro water pump 400 through the L-shaped tube 410. The heat preservation box 310 can be used to keep the solid phase extraction column 900 warm, so as to prevent the solid phase extraction column 900 from being affected by the external temperature after the collection is completed, resulting in the loss of volatile organic matter.

[0057] A collection method using the above-mentioned salt lake brine volatile organic matter collection and detection device comprises the following steps:

[0058] S1. Place the device in salt lake brine. The salt lake brine enters the mixing box 200 from the first connecting hole 731 and the second connecting hole 220 and is filtered by the filter hole of the sealing cover 740. The salt lake brine enters the collection box 300 through the transfer tube 340. The micro water pump 400 is started to adsorb and discharge the salt lake brine through the solid phase extraction column 900.

[0059] S2. When the flow sensor detects that the collection box 300 is blocked, the electric telescopic rod 600 is started to shrink, so that the sealing plug 720 closes the connecting pipe mechanism 800. At this time, the first connecting hole 731 and the second connecting hole 220 are misaligned and not connected, and the sealing cover 740 does not close the water pipe 120; the salt lake brine no longer flows into the mixing box 200, and the water in the annular water tank 100 enters the mixing box 200 and the collection box 300 from the water pipe 120 to flush and dilute, so that the collection box 300 is restored to be unobstructed;

[0060] S3. When the flow sensor detects that the flow is unblocked, the electronic valve is closed and the electric telescopic rod 600 is controlled to extend, so that the first connecting hole 731 and the second connecting hole 220 are partially connected, and the nozzle of the water pipe 120 is partially connected, thereby controlling the water in the mixing box 200 and the salt lake brine to enter the ratio for dilution, and after dilution, the electronic valve is opened for subsequent collection;

[0061] S4. After the collection is completed, the electronic valve is closed, and the electric telescopic rod 600 is controlled to extend to close the water pipe 120, and the equipment is taken out of the salt lake brine.

[0062] The present invention is suitable for the collection of organic matter in salt lake brine of unknown concentration through the cooperation of the control mechanism 700 with the connecting pipe mechanism 800 and the mixing box 200; specifically, when the concentration of the salt lake brine is low, the salt lake brine can be passed through the mixing box 200 and the collection box 300 in sequence; when the concentration of the salt lake brine is high, salt precipitation and other problems may occur to form blockage. At this time, the control mechanism 700 is used to control the flushing and dilution to restore the smooth flow, and then the water body of the mixing box 200 and the salt lake brine are controlled to enter the dilution ratio to ensure that the concentration of the salt lake brine is not too low when being collected, and does not respond to the collection of volatile organic matter, thereby achieving continuous collection and avoiding frequent blockage problems.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and changes without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A device for collecting and detecting volatile organic matter in salt lake brine, characterized in that: The invention comprises a mixing box (200), wherein the side wall of the mixing box (200) is fixedly connected to the bottom of an annular water box (100) via a plurality of water pipes (120); the bottom of the mixing box (200) is fixedly connected to the top of a collection box (300) via a transfer pipe (340); a solid phase extraction column (900) is installed inside the collection box (300), and a micro water pump (400) is installed at the bottom of the collection box (300); an electronic valve and a flow sensor are installed on the transfer pipe (340); The tops of the collection box (300), the annular water tank (100), and the mixing box (200) are fixedly connected together via a connecting pipe mechanism (800); the top of the connecting pipe mechanism (800) is fixedly connected to a vent cylinder (500), and one end of the vent cylinder (500) is located above the collected water body; An electric telescopic rod (600) is fixedly mounted on the top of the ventilator (500), a control mechanism (700) is slidably connected inside the ventilator (500), and one end of the electric telescopic rod (600) is fixedly connected to the control mechanism (700) for controlling the opening and closing of the connecting pipe mechanism (800).

2. A salt lake brine volatile organic compound collection and detection device according to claim 1, characterized in that: The control mechanism (700) comprises a sliding rod (710), the two ends of which pass through the corresponding two ends of the ventilation cylinder (500) respectively; a sealing plug (720) is fixedly connected to the sliding rod (710), and the sealing plug (720) is slidably connected to the inside of the ventilation cylinder (500); the lower end of the sliding rod (710) is fixedly connected to a sliding tube (730), the upper end of the sliding tube (730) is closed, and a plurality of first connecting holes (731) are evenly opened on the side wall of the sliding tube (730); the lower end of the sliding tube (730) is fixedly connected to a sealing cover (740), and a plurality of filtering holes are opened on the top of the sealing cover (740).

3. A salt lake brine volatile organic matter collection and detection device according to claim 2, characterized in that: The top of the mixing box (200) is fixedly connected with a liquid inlet pipe (210), and the side wall of the liquid inlet pipe (210) is evenly provided with a plurality of second connecting holes (220); the sliding tube (730) is slidably connected to the inner wall of the liquid inlet pipe (210) up and down; and the sealing cover (740) is slidably connected to the inner wall of the mixing box (200).

4. A salt lake brine volatile organic matter collection and detection device according to claim 3, characterized in that: When the sealing plug (720) does not seal the connecting pipe mechanism (800), the first connecting hole (731) is connected to the second connecting hole (220), and the sealing cover (740) seals the water pipe (120); when the sealing plug (720) seals the connecting pipe mechanism (800), the first connecting hole (731) is misaligned and not connected to the second connecting hole (220), and the sealing cover (740) does not seal the water pipe (120).

5. The device for collecting and detecting volatile organic compounds in salt lake brine according to claim 1, characterized in that: The connecting pipe mechanism (800) comprises a first quasi-n-type pipe (810) and a second quasi-n-type pipe (820); the two ends of the first quasi-n-type pipe (810) are respectively fixedly connected to the top of the collection box (300) and the top of the mixing box (200); the two ends of the second quasi-n-type pipe (820) are respectively fixedly connected to the top of the first quasi-n-type pipe (810) and the top of the annular water tank (100); the top of the second quasi-n-type pipe (820) is fixedly connected to the side wall of the ventilation cylinder (500) via a branch pipe (830).

6. A salt lake brine volatile organic matter collection and detection device according to claim 5, characterized in that: There are a plurality of connecting pipe mechanisms (800), which are evenly distributed around the mixing box (200).

7. The device for collecting and detecting volatile organic compounds in salt lake brine according to claim 1, characterized in that: A water inlet (110) is fixedly provided on the top of the annular water tank (100), and a valve is installed on the water inlet (110).

8. The device for collecting and detecting volatile organic compounds in salt lake brine according to claim 1, characterized in that: The upper end of the ventilator (500) is provided with a plurality of ventilating mesh holes (510), the upper end of the ventilator (500) is fixedly connected to a bracket (610), and the electric telescopic rod (600) is fixedly mounted on the bracket (610); an operating panel (520) is fixedly provided on the outer side of the ventilator (500).

9. The device for collecting and detecting volatile organic compounds in salt lake brine according to claim 1, characterized in that: The collection box (300) is provided with a box opening on one side, and a heat preservation box (310) is sealed and plugged into the box opening; a receiving groove (320) is provided through the heat preservation box (310) for receiving a solid phase extraction column (900); the top of the collection box (300) is fixedly connected to the intermediate tube (330), and the top of the intermediate tube (330) is fixedly connected to the transfer tube (340); the bottom of the collection box (300) is connected and installed with a micro water pump (400) via an L-shaped tube (410).

10. A method for collecting volatile organic compounds from salt lake brine using the device for collecting and detecting volatile organic compounds from salt lake brine according to any one of claims 1 to 9, characterized in that: The steps include: S1. The device is placed in salt lake brine. The salt lake brine enters the mixing box (200) from the first connecting hole (731) and the second connecting hole (220) and is filtered by the filter hole of the sealing cover (740). The salt lake brine enters the collection box (300) through the transfer tube (340). The micro water pump (400) is started to allow the salt lake brine to be adsorbed and discharged through the solid phase extraction column (900). S2, when the flow sensor detects that the collection box (300) is blocked, the electric telescopic rod (600) is activated to retract, so that the sealing plug (720) seals the connecting pipe mechanism (800), and the first connecting hole (731) and the second connecting hole (220) are misaligned and disconnected, and the sealing cover (740) does not seal the water pipe (120); the salt lake brine no longer flows into the mixing box (200), and the water in the annular water tank (100) enters the mixing box (200) and the collection box (300) from the water pipe (120) to flush and dilute, so that the collection box (300) is restored to be unobstructed; S3, when the flow sensor detects that the flow is unblocked, the electronic valve is closed, and the electric telescopic rod (600) is controlled to extend, so that the first connecting hole (731) is partially connected to the second connecting hole (220), and the nozzle of the water pipe (120) is partially connected, thereby controlling the ratio of water in the mixing box (200) and salt lake brine to be diluted, and after dilution, the electronic valve is opened for subsequent collection; S4. After the collection is completed, the electronic valve is closed, and the electric telescopic rod (600) is controlled to extend to close the water pipe (120), and the equipment is taken out of the salt lake brine.

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