Liquid sampling, metering and detecting device

Abstract

The invention discloses a liquid sampling, metering and detecting device, and particularly relates to the technical field of liquid sampling, the liquid sampling, metering and detecting device comprises a frame, the outer surface of the frame is fixedly connected with a support frame, the right end of the frame is fixedly provided with a control box, and the inner surface of the frame is provided with a retractable assembly; a sampling assembly is jointly arranged at the lower end of the retracting and releasing assembly and the front part of the inner surface of the frame, and the retracting and releasing assembly comprises an energy storage battery fixedly mounted at the right end of the frame. According to the liquid sampling, metering and detecting device, the sampling mechanism and the liquid discharging mechanism are arranged, so that oil and water in sampled water can be automatically separated, the purity of an oil sample is improved, accurate collection of an oil layer is guaranteed, interference of impurities in the water on the oil sample is reduced, and the detection efficiency is improved. In addition, through the separation process, the actual content of the oil stains on the water surface can be evaluated more clearly, and subsequent water quality detection and pollution monitoring are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of liquid sampling, and in particular to a liquid sampling metering and detecting device. Background Art

[0002] Liquid is one of the three major forms of matter. It has no definite shape and is often affected by the container. However, its volume is fixed under constant pressure and temperature. Therefore, in the process of sampling liquids, containers are needed to temporarily store the liquids and sample the liquids at fixed points and in fixed quantities. In particular, in the existing production process, many liquids have different properties (such as oil, asphalt, river water, etc.), and their weight, viscosity, and stability are not consistent. In the sampling process, special containers are needed to collect them.

[0003] Chinese patent announcement number CN112098149B discloses a liquid sampling metering detection device, including a metering cylinder and a main piston rod arranged inside the metering cylinder, the top of the main piston rod is provided with a first cover body, the inner cylinder is coaxially arranged inside the metering cylinder, the bottom of the piston rod is provided with a groove upward along the axis, the upper part of the inner cylinder is arranged in the groove, the inner cylinder is provided with a secondary piston rod, the secondary piston rod passes through the inner cylinder, the main piston rod and the first cover body in sequence, and the top of the secondary piston rod is connected to the second cover body. The structure of the present invention is simple and practical. By adding an inner cylinder in the metering cylinder, the main piston rod cooperates with the secondary piston rod to make the range of liquid extraction accurate to one decimal place, and the first metering guide rail and the second metering guide rail cooperate with each other, which can maintain high stability during use. The setting of the limit block can eliminate the error existing in the operation, so that the measurement accuracy will not be affected by manual operation, and the accuracy of detection and analysis is improved; however, the above patent document still has the following defects during implementation:

[0004] Although the above patent can improve the sampling accuracy during implementation, it is unable to separate the oil and water in the water during the sampling process. At the same time, it lacks the relevant retractable structure and cannot realize the sampling of up and down movement. Summary of the invention

[0005] The main purpose of the present invention is to provide a liquid sampling, metering and detection device, which can effectively solve the problem.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a liquid sampling, metering and detection device, comprising a frame, a support frame is fixedly connected to the outer surface of the frame, a control box is fixedly installed on the right end of the frame, a retractable assembly is arranged on the inner surface of the frame, and a sampling assembly is jointly arranged at the lower end of the retractable assembly and the front part of the inner surface of the frame.

[0007] Preferably, the retractable assembly includes an energy storage battery fixedly mounted on the right end of the frame, a retractable mechanism is provided on the inner surface of the frame, and a reciprocating mechanism is provided on the inner surface of the frame in front of the retractable mechanism.

[0008] Preferably, the retracting and unretracting mechanism includes a reel that is rotatably connected to the inner surface of the frame, the right end of the reel is fixedly connected to a dual-axis motor that is fixedly connected to the right end of the frame, the right end of the dual-axis motor is fixedly connected to a rotating rod via a coupling, and the outer surface of the reel is wrapped with a cable.

[0009] Preferably, the reciprocating mechanism includes a reciprocating rod fixedly connected to the front part of the inner surface of the frame, the left part of the outer surface of the reciprocating rod and the left part of the outer surface of the winding roller are jointly fixedly connected with a pulley group, the side of the inner surface of the frame close to each other is jointly fixedly connected with a slide plate, the outer surface of the reciprocating rod is slidably connected to a slider slidably connected to the inner surface of the slide plate, and the inner surface of the slider is slidably connected to the outer surface of cable one.

[0010] Preferably, the sampling assembly includes a sampling barrel fixedly connected to a lower end of the cable, a sampling mechanism is commonly provided on the inner surface of the sampling barrel and the inner surface of the frame, a sealing mechanism is provided on both sides of the sampling mechanism on the inner surface of the sampling barrel, an oil scraping mechanism is provided on the inner surface of the sampling barrel, a liquid discharge mechanism is provided on the lower part of the inner surface of the sampling barrel, a counterweight block is fixedly installed on the upper end of the sampling barrel, and a fixing plate is commonly fixedly connected on the inner surface of the frame at two sides close to each other.

[0011] Preferably, the sampling mechanism includes a transmission rod rotatably connected to the inner surface of the frame, the right part of the outer surface of the transmission rod and the outer surface of the rotating rod are commonly fixedly connected with a pulley group two, the outer surface of the sampling cylinder is symmetrically provided with placement grooves connected to the inner surface of the sampling cylinder, the inner surfaces of the two placement grooves are fixedly connected with filter screens, the inner surface of the sampling cylinder is fixedly connected with two limiting rings, the inner surface of the sampling cylinder is slidably connected with a piston block located between the two limiting rings, the upper end of the piston block is fixedly connected with a fixed block slidably connected to the inner surface of the sampling cylinder, the upper end of the fixed block is fixedly connected with two cables wound around the outer surface of the transmission rod, the size and shape of the upper part of the outer surface of the sampling cylinder are adapted to the size and shape of the inner surface of the fixed plate, and the inner surface of the sampling cylinder is fixedly connected with an oil-hydrophobic membrane located below the placement groove.

[0012] Preferably, the sealing mechanism includes a spring 1 which is symmetrically fixedly connected to the lower part of the inner surface of the two placement grooves, and the upper end of the spring 1 on the same side is commonly fixedly connected to a sealing block which is slidably connected to the inner surface of the placement groove. The middle part of the upper end of the two sealing blocks penetrates and extends to the upper part of the inner surface of the sampling tube and is slidably connected to a pull rope which is fixedly connected to the lower end of the fixed block.

[0013] Preferably, the oil scraping mechanism includes a rectangular groove opened on the outer surface of the sampling cylinder, the outer surface of the sampling cylinder is fixedly connected with a concave plate at the rectangular groove, the inner surface of the concave plate is slidably connected with a round rod block slidably connected to the inner surface of the rectangular groove, the outer surface of the round rod block is symmetrically sleeved with springs two front and back, the two ends of the two springs are respectively fixedly connected to the left end of the concave plate and the rectangular block on the round rod block, the left part of the inner surface of the rectangular groove passes through and extends to the outer surface of the sampling cylinder and is slidably connected with an extrusion rod, the right end of the extrusion rod is fixedly connected with a convex block plate slidably connected to the inner surface of the rectangular groove, the extrusion rod is sleeved with a spring three, the two ends of the spring three are respectively fixedly connected to the left part of the inner surface of the rectangular groove and the left end of the convex plate.

[0014] Preferably, the discharge mechanism includes a discharge hole opened at the lower end of the sampling barrel, the inner surface of the discharge hole is connected to the inner surface of the sampling barrel, the lower end of the sampling barrel passes through and extends to the lower part of the inner surface of the sampling barrel and is slidably connected with a push rod, one end of the push rod is fixedly connected with a rubber plug whose outer surface size and shape are matched with the size and shape of the inner surface of the discharge hole, a spring four is sleeved on the outer surface of the push rod, and two ends of the spring four are respectively fixedly connected to the lower part of the inner surface of the sampling barrel and the lower end of the round block on the push rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, by providing a sampling mechanism and a liquid discharge mechanism, the oil and water in the sampled water can be automatically separated, which not only improves the purity of the oil sample, but also ensures the accurate collection of the oil layer, reduces the interference of impurities in the water on the oil sample, and ensures the accuracy and reliability of oil pollution analysis. In addition, through this separation process, the actual content of oil pollution on the water surface can be more clearly evaluated, which is helpful for subsequent water quality detection and pollution monitoring.

[0017] 2. In the present invention, by providing a retracting and releasing mechanism and a reciprocating mechanism, under the action of the winding roller and the cable, the sampling tube is driven to perform up and down sampling operations, which can effectively collect samples from different depths of the water surface, avoiding missing the difference in oil pollution distribution due to static sampling or single-layer sampling. Especially when the oil pollution on the water surface is unevenly distributed or the oil layer is thin, the up and down movement is helpful to fully obtain representative samples of the oil layer on the water surface, more accurately reflect the actual situation of oil pollution on the water surface, reduce the disturbance of the oil layer by external factors, improve the accuracy and completeness of oil sample collection, and contribute to the accuracy of subsequent oil pollution detection.

[0018] 3. In the present invention, an oil scraping mechanism is provided so that the movement of the convex plate can drive the scraping of the oil layer, and the oil layer is taken out from the sampling tube, so as to collect the oil sample retained in the water to the maximum extent, avoid the oil layer from being left over or mixed with water, and ensure that the oil sample taken out is highly representative and not disturbed by water, thereby improving the accuracy of subsequent oil pollution analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the energy storage battery and the fixing plate of the present invention;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the retractable assembly and the sampling assembly of the present invention;

[0023] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 6 It is a schematic diagram of the structure of the retractable mechanism and the reciprocating mechanism of the present invention;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the sampling mechanism of the present invention;

[0026] Figure 8 It is a schematic diagram of the cross-sectional structure of the blocking mechanism of the present invention;

[0027] Fig. 9 It is a schematic diagram of the cross-sectional structure of the liquid discharge mechanism of the present invention;

[0028] Fig.10 It is a schematic diagram of the cross-sectional structure of the oil scraping mechanism of the present invention.

[0029] In the figure: 1, frame; 2, support frame; 3, control box; 4, retractable assembly; 41, energy storage battery; 42, retractable mechanism; 421, rewinding roller; 422, dual-axis motor; 423, rotating rod; 424, cable 1; 43, reciprocating mechanism; 431, reciprocating rod; 432, pulley group 1; 433, slide plate; 434, slider; 5, sampling assembly; 51, sampling cylinder; 52, sampling mechanism; 521, transmission rod; 522, pulley group 2; 523, placement groove; 524, filter screen; 525, limit ring; 526, piston block; 527, fixed block; 528, cable 2; 529, oil-hydrophobic membrane; 53, sealing mechanism; 531, spring 1; 532, sealing block; 533, pull rope; 54, oil scraping mechanism; 541, rectangular groove; 542, concave plate; 543, round rod block; 544, spring 2; 545, extrusion rod; 546, spring 3; 547, bump plate; 55, liquid discharge mechanism; 551, liquid discharge hole; 552, rubber plug; 553, push rod; 554, spring 4; 56, counterweight block; 57, fixed plate. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] Embodiment 1, as Figure 1 and Figure 2 As shown, a liquid sampling, metering and detecting device comprises a frame 1, a support frame 2 is fixedly connected to the outer surface of the frame 1, a control box 3 is fixedly installed at the right end of the frame 1, a retractable assembly 4 is arranged on the inner surface of the frame 1, and a sampling assembly 5 is jointly arranged at the lower end of the retractable assembly 4 and the front part of the inner surface of the frame 1.

[0032] During the implementation of this embodiment, after the frame 1 and the support frame 2 are moved to the set position, the control box 3 is then operated to control the retractable component 4 to perform the line-releasing movement, and the sampling component 5 is evenly driven to move downward during the movement. When the movement reaches the set water level, the water is sampled by the sampling component 5, and a sealing operation is performed after the completion. The sampled water is then lifted by the retractable component 4, and the oil and liquid in the water are separated by extracting the water, and then taken out by the sampling component 5 again.

[0033] The control box 3 mentioned above is a mature control technology means and equipment in the prior art. In this solution, its controllable functions are utilized, and its internal structure, principle and connection method are not further explained.

[0034] Specifically, in order to achieve stable and accurate sampling during the sampling process, refer to Figure 3 , Figure 4 and Figure 6 In this embodiment, the retractable assembly 4 includes an energy storage battery 41 fixedly mounted on the right end of the frame 1, a retractable mechanism 42 is provided on the inner surface of the frame 1, and a reciprocating mechanism 43 is provided on the inner surface of the frame 1 in front of the retractable mechanism 42.

[0035] For further information, see Figure 4 and Figure 6 In this embodiment, the retracting mechanism 42 includes a reel 421 rotatably connected to the inner surface of the frame 1, a dual-axis motor 422 fixedly connected to the right end of the frame 1 is fixedly connected to the right end of the reel 421, a rotating rod 423 is fixedly connected to the right end of the dual-axis motor 422 through a coupling, and a cable 424 is wound around the outer surface of the reel 421.

[0036] For further information, see Figure 4 and Figure 6In this embodiment, the reciprocating mechanism 43 includes a reciprocating rod 431 fixedly connected to the front part of the inner surface of the frame 1, the left part of the outer surface of the reciprocating rod 431 and the left part of the outer surface of the winding roller 421 are fixedly connected with a pulley set 432, and the side of the inner surface of the frame 1 close to each other is fixedly connected with a slide plate 433, the outer surface of the reciprocating rod 431 is slidably connected with a slider 434 slidably connected to the inner surface of the slide plate 433, and the inner surface of the slider 434 is slidably connected to the outer surface of the cable 424.

[0037] During the implementation process, the output end of the left end of the dual-axis motor 422 is started to drive the winding roller 421 to rotate through the coupling, and the cable 424 wound on the winding roller 421 is loosened. At the same time, the winding roller 421 will drive the reciprocating rod 431 to rotate through the transmission of the pulley group 432 during the rotation. Since the reciprocating rod 431 and the slider 434 are slidably connected, the slider 434 can reciprocate left and right under the limiting action of the slide plate 433, so that the cable 424 can be loosened back and forth left and right. Under the gravity of the sampling component 5, the sampling component 5 can gradually move on the water surface for sampling, and the water Surface oil usually accumulates on the surface of the water body due to buoyancy, and the thickness and distribution of the oil layer may be affected by factors such as water flow and wind direction. The up and down movement of the winding method can effectively collect samples from different depths of the water surface, avoiding missing the difference in oil distribution due to static sampling or single-layer sampling. Especially when the oil on the water surface is unevenly distributed or the oil layer is thin, the up and down movement helps to fully obtain representative samples of the surface oil layer, more accurately reflect the actual situation of surface oil pollution, reduce the disturbance of the oil layer by external factors, improve the accuracy and completeness of oil sample collection, and contribute to the accuracy of subsequent oil pollution detection.

[0038] The reciprocating rod 431 and the sliding block 434 mentioned above constitute a mature ball screw mechanism in the prior art.

[0039] The energy storage battery 41 mentioned above is a mature technical means for storing electric energy in the prior art. In this solution, the function of storing electric energy to power the dual-axis motor 422 and the control box 3 is utilized, and its internal structure, connection method and principle are not further elaborated.

[0040] Embodiment 2: Based on Embodiment 1, this embodiment adds a sampling component 5 for sampling water and realizing oil-water separation, so as to achieve the purpose of sampling water and realizing oil-water separation.

[0041] Specifically, in order to sample water and separate oil from water, refer to Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Fig. 9and Fig.10 In this embodiment, the sampling assembly 5 includes a sampling barrel 51 fixedly connected to the lower end of the cable 424, a sampling mechanism 52 is commonly provided on the inner surface of the sampling barrel 51 and the inner surface of the frame 1, a blocking mechanism 53 is provided on both sides of the sampling mechanism 52 on the inner surface of the sampling barrel 51, an oil scraping mechanism 54 is provided on the inner surface of the sampling barrel 51, a liquid discharge mechanism 55 is provided on the lower part of the inner surface of the sampling barrel 51, a counterweight block 56 is fixedly installed on the upper end of the sampling barrel 51, and a fixing plate 57 is commonly fixedly connected to the inner surface of the frame 1 on the sides close to each other.

[0042] For further information, see Figure 4 , Figure 5 and Figure 7 In this embodiment, the sampling mechanism 52 includes a transmission rod 521 rotatably connected to the inner surface of the frame 1, the right part of the outer surface of the transmission rod 521 and the outer surface of the rotating rod 423 are fixedly connected with a pulley group 2 522, the outer surface of the sampling cylinder 51 is symmetrically provided with placement grooves 523 connected to the inner surface of the sampling cylinder 51, the inner surfaces of the two placement grooves 523 are fixedly connected with filter screens 524, the inner surface of the sampling cylinder 51 is fixedly connected with two limiting rings 525, the inner surface of the sampling cylinder 51 is slidably connected with a piston block 526 located between the two limiting rings 525, the upper end of the piston block 526 is fixedly connected with a fixed block 527 slidably connected to the inner surface of the sampling cylinder 51, the upper end of the fixed block 527 is fixedly connected with a cable 2 528 wound around the outer surface of the transmission rod 521, the size and shape of the upper part of the outer surface of the sampling cylinder 51 are adapted to the size and shape of the inner surface of the fixed plate 57, and the inner surface of the sampling cylinder 51 is fixedly connected with an oil-hydrophobic membrane 529 located below the placement groove 523.

[0043] During the implementation process, after the lower part of the outer surface of the sampling tube 51 is placed into the water through the retractable assembly 4, under the principle of the communicating vessel, the oil and water on the water surface will first enter the inner cavity of the sampling tube 51 through the placement groove 523, and at the same time, the floating debris on the water surface will be blocked by the filter screen 524 to prevent the debris from entering the inner cavity of the sampling tube 51. Then, the right end output end of the dual-axis motor 422 is started to drive the rotating rod 423 to rotate through the coupling, and under the transmission action of the pulley group 2 522, the transmission rod 521 is driven to rotate, so that the rotation of the transmission rod 521 drives the cable 2 528 to tighten. , so that the cable 2 528 pulls the piston block 526 at the lower end of the fixed block 527 to move upward on the inner surface of the sampling tube 51, so that during the upward movement of the piston block 526, water and oil are drawn into the inner cavity of the sampling tube 51 through the placement groove 523, and the winding and relaxing of the retracting component 4 can achieve the water and oil being effectively drawn into the sampling tube 51, and the up and down movement can ensure that the oil layer is evenly collected, avoiding the possibility of missing part of the oil layer due to static sampling, which not only improves the representativeness and accuracy of the oil sample, but also reduces the interference of impurities, which is helpful to accurately analyze the actual situation of oil pollution on the water surface.

[0044] The transmission rod 521 and the cable 528 mentioned above, when the sampling cylinder 51 is relaxed and lowered through the retracting assembly 4, the transmission rod 521 and the cable 528 also move with the descent of the sampling cylinder 51. On the contrary, when the sampling cylinder 51 is lifted, the transmission rod 521 and the cable 528 also move together with the retracting assembly 4, and quantitative sampling can be performed according to the reeling length of the cable 528.

[0045] The pulley set 1 432 and the pulley set 2 522 mentioned above are both composed of two pulleys and a belt.

[0046] The dual-axis motor 422 mentioned above is a mature driving technology means and equipment in the prior art. In this solution, the couplings on both sides thereof can rotate independently and can stop after rotating to a set number of circles. Its internal structure, connection method and principle will not be elaborated any more.

[0047] For further information, see Figure 4 , Figure 5 and Figure 8 In this embodiment, the blocking mechanism 53 includes a spring 531 which is symmetrically fixed to the lower part of the inner surface of the two placement grooves 523, and the upper ends of the springs 531 on the same side are commonly fixedly connected to a blocking block 532 which is slidably connected to the inner surface of the placement groove 523. The middle parts of the upper ends of the two blocking blocks 532 penetrate and extend to the upper part of the inner surface of the sampling tube 51 and are slidably connected to a pull rope 533 which is fixedly connected to the lower end of the fixed block 527.

[0048] For further information, see Figure 4 , Figure 5 and Fig. 9 In this embodiment, the discharge mechanism 55 includes a discharge hole 551 opened at the lower end of the sampling tube 51, the inner surface of the discharge hole 551 is connected to the inner surface of the sampling tube 51, the lower end of the sampling tube 51 passes through and extends to the lower part of the inner surface of the sampling tube 51 and is slidably connected with a push rod 553, one end of the push rod 553 is fixedly connected with a rubber plug 552 whose outer surface size and shape are matched with the size and shape of the inner surface of the discharge hole 551, and a spring four 554 is sleeved on the outer surface of the push rod 553, and the two ends of the spring four 554 are respectively fixedly connected to the lower part of the inner surface of the sampling tube 51 and the lower end of the round block on the push rod 553.

[0049] During the implementation process, when the fixed block 527 drives the piston block 526 to move upward, it will move upward by pulling the pull rope 533, enter the pulling blocking block 532 and move upward, and the placement groove 523 and the sampling tube 51 are connected and blocked, and then the sampling tube 51 is taken from the water through the retractable assembly 4. After the extraction is completed, the push rod 553 is pushed to align with the drain hole 551 through the relevant container, so that the spring four 554 is in a stretched state, and then the rubber plug 552 is away from the drain hole 551. The water in the sampling tube 51 will separate the oil and water in the water through the oil-hydrophobic membrane 529 under the action of gravity. The water is discharged through the drain hole 551, and the separated oil side is retained at the upper end of the oil-hydrophobic membrane 529, which not only improves the purity of the oil sample, but also ensures the accurate collection of the oil layer, reduces the interference of impurities in the water on the oil sample, and ensures the accuracy and reliability of the oil pollution analysis. In addition, through this separation process, the actual content of oil pollution on the water surface can be more clearly evaluated, which is helpful for subsequent water quality detection and pollution monitoring.

[0050] The oil-hydrophobic membrane 529 mentioned above is a mature material in the prior art. In this solution, it is used to retain oil while water will not be retained. Its internal structure and principle will not be explained again.

[0051] For further information, see Figure 4 , Figure 5 and Fig.10 In this embodiment, the oil scraping mechanism 54 includes a rectangular groove 541 opened on the outer surface of the sampling cylinder 51, and a concave plate 542 is fixedly connected to the outer surface of the sampling cylinder 51 at the rectangular groove 541. A round rod block 543 slidably connected to the inner surface of the rectangular groove 541 is slidably connected to the inner surface of the concave plate 542. A spring 2 544 is symmetrically sleeved on the outer surface of the round rod block 543. The two ends of the two springs 2 544 are respectively fixedly connected to the left end of the concave plate 542 and the rectangular block on the round rod block 543. The left part of the inner surface of the rectangular groove 541 passes through and extends to the outer surface of the sampling cylinder 51. An extrusion rod 545 is slidably connected. The right end of the extrusion rod 545 is fixedly connected to a convex block plate 547 slidably connected to the inner surface of the rectangular groove 541. The extrusion rod 545 is sleeved with a spring 3 546. The two ends of the spring 3 546 are respectively fixedly connected to the left part of the inner surface of the rectangular groove 541 and the left end of the convex block plate 547.

[0052] During the implementation process, in order to remove the oil layer retained on the upper end of the oil-hydrophobic membrane 529, the squeezing rod 545 is pushed to make the protrusion plate 547 on the squeezing rod 545 move to the right, so that the spring three 546 is in a stretched state, and then the lower end of the protrusion plate 547 will scrape the oil layer on the upper end of the oil-hydrophobic membrane 529 to move to the right. When the protrusion on the protrusion plate 547 contacts the right end of the round rod block 543, the protrusion plate 547 will push the round rod block 543 to move to the right and slide on the inner surface of the concave plate 542, so that the spring two 544 is in a compressed state, and then the oil layer is taken out from the sampling tube 51 through the rectangular groove 541, so as to collect the oil sample retained in the water to the maximum extent, avoid the oil layer from being left behind or mixed with water, ensure that the oil sample taken out is highly representative and not disturbed by water, thereby improving the accuracy of subsequent oil pollution analysis.

[0053] Working process: When in use, the sampling tube 51 is evenly lowered into the water through the retracting mechanism 42 and the reciprocating mechanism 43, and samples are taken from the water through the cooperation between the sampling mechanism 52 and the blocking mechanism 53. Then, the sampling tube 51 is lifted out through the retracting mechanism 42 and the reciprocating mechanism 43, and the water and oil in the sampled water are separated through the cooperation between the liquid discharge mechanism 55 and the oil scraping mechanism 54 to obtain water and oil respectively.

[0054] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A liquid sampling and measuring device, comprising a frame (1), characterized in that: The outer surface of the frame (1) is fixedly connected to a support frame (2), the right end of the frame (1) is fixedly mounted with a control box (3), the inner surface of the frame (1) is provided with a retractable assembly (4), and the lower end of the retractable assembly (4) and the front part of the inner surface of the frame (1) are jointly provided with a sampling assembly (5).

2. A liquid sampling and measuring detection device according to claim 1, characterized in that: The retractable assembly (4) comprises an energy storage battery (41) fixedly mounted on the right end of the frame (1); a retractable mechanism (42) is provided on the inner surface of the frame (1); and a reciprocating mechanism (43) is provided on the inner surface of the frame (1) in front of the retractable mechanism (42).

3. A liquid sampling and measuring detection device according to claim 2, characterized in that: The retracting and unretracting mechanism (42) comprises a reel (421) rotatably connected to the inner surface of the frame (1); the right end of the reel (421) is fixedly connected to a double-axis motor (422) fixedly connected to the right end of the frame (1); the right output end of the double-axis motor (422) is fixedly connected to a rotating rod (423) via a coupling; and the outer surface of the reel (421) is wound with a cable (424).

4. A liquid sampling and measuring detection device according to claim 3, characterized in that: The reciprocating mechanism (43) comprises a reciprocating rod (431) fixedly connected to the front part of the inner surface of the frame (1); the left part of the outer surface of the reciprocating rod (431) and the left part of the outer surface of the winding roller (421) are fixedly connected to a pulley set (432); the inner surface of the frame (1) is fixedly connected to a slide plate (433) on one side close to each other; the outer surface of the reciprocating rod (431) is slidably connected to a slider (434) slidably connected to the inner surface of the slide plate (433); the inner surface of the slider (434) is slidably connected to the outer surface of the cable (424).

5. A liquid sampling and measuring detection device according to claim 4, characterized in that: The sampling assembly (5) comprises a sampling barrel (51) fixedly connected to the lower end of the cable (424); the inner surface of the sampling barrel (51) and the inner surface of the frame (1) are jointly provided with a sampling mechanism (52); the inner surface of the sampling barrel (51) is provided with a sealing mechanism (53) on both sides of the sampling mechanism (52); the inner surface of the sampling barrel (51) is provided with an oil scraping mechanism (54); the lower part of the inner surface of the sampling barrel (51) is provided with a liquid discharge mechanism (55); a counterweight block (56) is fixedly installed at the upper end of the sampling barrel (51); and a fixing plate (57) is jointly fixedly connected to the inner surface of the frame (1) on the sides close to each other.

6. A liquid sampling and measuring detection device according to claim 5, characterized in that: The sampling mechanism (52) comprises a transmission rod (521) rotatably connected to the inner surface of the frame (1); the right portion of the outer surface of the transmission rod (521) and the outer surface of the rotating rod (423) are fixedly connected to a pulley set 2 (522); the outer surface of the sampling barrel (51) is symmetrically provided with placement grooves (523) connected to the inner surface of the sampling barrel (51); the inner surfaces of the two placement grooves (523) are fixedly connected to filter screens (524); the inner surface of the sampling barrel (51) is fixedly connected to two limit rings (525); the inner surface of the sampling barrel (51) A piston block (526) is slidably connected between the two limit rings (525); the upper end of the piston block (526) is fixedly connected to a fixed block (527) slidably connected to the inner surface of the sampling tube (51); the upper end of the fixed block (527) is fixedly connected to a cable (528) wound around the outer surface of the transmission rod (521); the size and shape of the upper part of the outer surface of the sampling tube (51) are compatible with the size and shape of the inner surface of the fixed plate (57); the inner surface of the sampling tube (51) is fixedly connected to an oil-hydrophobic membrane (529) located below the placement groove (523).

7. A liquid sampling and measuring detection device according to claim 6, characterized in that: The blocking mechanism (53) comprises a spring (531) symmetrically fixedly connected to the lower inner surface of the two placement grooves (523) in a front-to-back manner, and the upper end of the spring (531) on the same side is commonly fixedly connected to a blocking block (532) slidably connected to the inner surface of the placement groove (523), and the middle part of the upper end of the two blocking blocks (532) penetrates and extends to the upper inner surface of the sampling tube (51) and is slidably connected to a pull rope (533) fixedly connected to the lower end of the fixed block (527).

8. A liquid sampling and measuring detection device according to claim 5, characterized in that: The oil scraping mechanism (54) comprises a rectangular groove (541) formed on the outer surface of the sampling tube (51); a concave plate (542) is fixedly connected to the outer surface of the sampling tube (51) at the rectangular groove (541); a round rod block (543) is slidably connected to the inner surface of the rectangular groove (541); a spring (544) is symmetrically sleeved on the outer surface of the round rod block (543); two ends of the two springs (544) are respectively connected to the left end of the concave plate (542). The rectangular block on the round rod block (543) is fixedly connected, the left part of the inner surface of the rectangular groove (541) penetrates and extends to the outer surface of the sampling tube (51) and is slidably connected with an extrusion rod (545), the right end of the extrusion rod (545) is fixedly connected with a protrusion plate (547) slidably connected to the inner surface of the rectangular groove (541), the extrusion rod (545) is sleeved with a spring three (546), and the two ends of the spring three (546) are respectively fixedly connected to the left part of the inner surface of the rectangular groove (541) and the left end of the protrusion plate (547).

9. The liquid sampling and measuring detection device according to claim 5, characterized in that: The discharge mechanism (55) comprises a discharge hole (551) opened at the lower end of the sampling tube (51), the inner surface of the discharge hole (551) is connected to the inner surface of the sampling tube (51), the lower end of the sampling tube (51) passes through and extends to the lower part of the inner surface of the sampling tube (51) and is slidably connected with a push rod (553), one end of the push rod (553) is fixedly connected with a rubber plug (552) whose outer surface size and shape are matched with the size and shape of the inner surface of the discharge hole (551), the outer surface of the push rod (553) is sleeved with a spring four (554), and the two ends of the spring four (554) are respectively fixedly connected to the lower part of the inner surface of the sampling tube (51) and the lower end of the round block on the push rod (553).

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