A hazardous chemical detection sampling device

Abstract

The present invention relates to the technical field of sampling, and specifically relates to a sampling device for hazardous chemical detection, including a housing, a switching mechanism, and a sampling mechanism. A fixed shaft is fixedly installed inside the housing, and a horizontal sampling port and a vertical sampling port are respectively opened on the left side and the bottom of the housing. Through the mutual cooperation of the sampling mechanism and the switching mechanism, the present invention can switch sampling bottles at different positions for sampling, which is convenient for sampling oil products at different positions or different depths at one time, without the need for repeated sampling, improving the sampling efficiency. At the same time, the inclination state of the sampling bottle relative to the horizontal liquid level can also be adjusted to meet the sampling of different depths of the surface layer, middle layer, and bottom layer. Through the switching mechanism and the anti-static rope, the present invention can conveniently control the rotation of the sampling mechanism on the oil liquid to switch sampling bottles at different positions, without the need to additionally install a number of driving sources.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling, and specifically to a sampling device for hazardous chemical detection. Background Art

[0002] Hazardous chemicals refer to chemical substances with physical and chemical hazards, biological hazards, and environmental hazards, such as gasoline. Gasoline is a common flammable hazardous chemical, and gasoline is generally stored in oil tanks. Extracting an oil sample from the oil tank for testing is an important step to ensure that the oil quality meets the standards.

[0003] Generally, a sampling bottle is used for sampling. The existing sampling bottles mainly have two forms: an opening at the top and an opening at the bottom. An operator uses an anti-static rope to lower the sampling bottle into the oil tank for sampling. The sampling bottle with an opening at the top is used for sampling the surface or upper-layer oil, and the sampling bottle with an opening at the bottom is used for sampling the bottom-layer oil. However, no matter which form of sampling bottle is used, only one sample can be collected at a time. When sampling oils at different positions or different depths, multiple sampling bottles need to be repeatedly placed, and the single-sampling operation is repeated, resulting in low overall sampling efficiency. Moreover, different types of sampling bottles need to be replaced for different depths, further affecting the sampling efficiency.

[0004] There are also relevant sampling devices that replace manual operation of the sampling bottle for sampling. For example, the Chinese invention patent with the publication number CN217084338U discloses a sampling device for oil product detection. Inside the sampling box, a plurality of sampling chambers are arranged side by side from left to right. A driving motor is fixed on the inner wall at the top end of the sampling chamber. Outside the sampling box, a plurality of baffles fixed on the output end of the driving motor are provided. The motor drives the baffle to be misaligned with the liquid inlet hole so that the oil enters the sampling chamber. After sampling, the baffle is rotated to cover the liquid inlet hole to close the liquid inlet hole. By providing a plurality of sampling chambers, oils at different depths can be sampled respectively.

[0005] Although the above sampling device can sample at different depths, when sampling, it is necessary to control the opening and closing of different motors, with relatively high overall control requirements and increased control costs. Secondly, the opening of the sampling chamber is fixed upward. This type of sampling chamber is only suitable for sampling the surface or upper-layer oil. Even if the sampling device is lowered to the bottom of the oil tank, there is still a certain height difference between the opening of the sampling chamber and the bottom of the oil tank, and effective sampling of the bottom of the oil tank cannot be carried out. Summary of the Invention

[0006] To solve the above problems, the present invention provides a sampling device for hazardous chemical detection, including a housing, a switching mechanism, and a sampling mechanism. A fixed shaft is fixedly installed inside the housing, and a horizontal sampling port and a vertical sampling port are respectively opened on the left side and the bottom of the housing.

[0007] The sampling mechanism includes an inner housing rotatably mounted on a fixed shaft and a driving member for rotating the fixing member. The outer wall of the inner housing abuts against the inner wall of the outer housing. A plurality of fixing members for fixing the sampling bottles are rotatably arranged inside the inner housing. The inner housing is provided with a first communication port and a second communication port corresponding to each fixing member one by one. The inner housing is provided with a first closing component and a second closing component for blocking the first communication port and the second communication port.

[0008] The switching mechanism is arranged outside the outer housing and drives the inner housing to rotate and switch the sampling bottles through an anti-static rope.

[0009] In a possible implementation manner, a handle mechanism is arranged on the outer side of the outer housing. The handle mechanism includes a plurality of connecting segments connected up and down in a threaded connection manner. The top of the uppermost connecting segment is fixedly connected with a handle. Two pulleys distributed up and down are rotatably mounted on the right side of the uppermost connecting segment. A telescopic rod located between the two pulleys above and below is fixedly connected to the left side. A screw for locking its telescopic length is installed on the telescopic rod. A pulley is also rotatably mounted at the end of the telescopic rod far away from the connecting segment.

[0010] In a possible implementation manner, an arc-shaped plate is fixedly installed on the top of the outer housing. The bottom of the lowermost connecting segment is hinged to the arc-shaped plate. A positioning bolt with a nut is fixedly connected to the outer wall of the connecting segment. An arc-shaped sliding groove coaxial with the hinge point of the lowermost connecting segment is provided on the arc-shaped plate. The positioning bolt is movably installed in the arc-shaped sliding groove. When the outer housing rotates to a suitable angle, the arc-shaped plate and the lowermost connecting segment are locked by the cooperation of the positioning bolt and the nut.

[0011] In a possible implementation manner, the left side of the inner housing is designed with a chamfer. The fixing members are evenly distributed along the circumferential direction of the inner housing. The fixing members include symmetrically distributed first support frames installed on the inner ring wall of the inner housing. An installation sleeve is rotatably connected between the first support frames. The mouth section of the sampling bottle is inserted into the installation sleeve.

[0012] In a possible implementation manner, the driving member includes a shaft sleeve rotatably sleeved outside the fixed shaft and fixedly connected to the inner housing. A movable plate is slidably installed left and right on the shaft sleeve. An electric push rod for pushing the movable plate to move left and right is fixedly installed on the shaft sleeve. The rear end of the telescopic section of the electric push rod is fixedly connected to the movable plate. A gear is coaxially fixedly connected to the rotating shaft of the installation sleeve. A rack corresponding to each gear is fixedly connected to the right side of the movable plate. The rack meshes with the corresponding gear. The rack is slidably connected to the first support frame left and right. A torsion spring is installed between the fixed shaft and the shaft sleeve.

[0013] In a possible implementation manner, the driving member further includes positioning beads that are slidably mounted up and down inside the movable plate and symmetrically distributed up and down. A compression spring is fixedly connected between one side of the positioning bead away from the center of the movable plate and the inner wall of the movable plate. The sleeve is provided with grooves that are matched with the positioning beads and distributed left and right, and a retaining ring is fixedly connected to the sleeve on the right side of the groove.

[0014] In a possible implementation manner, the fixing member further includes a limiting component. The limiting component includes a U-shaped limiting frame that is rotatably mounted on the mounting sleeve. The limiting frame limits the bottom section of the sampling bottle. A fixed sleeve is fixedly connected to the middle of the limiting frame. A U-shaped limiting rod is slidably mounted on the fixed sleeve. The limiting rod and the limiting frame are arranged in a cross shape. Two parallel sections of the limiting rod are fixedly connected with a first retaining piece. A first return spring is fixedly connected between the first retaining piece and the inner wall of the fixed sleeve.

[0015] In a possible implementation manner, the first closing component includes an L-shaped sealing plate that is slidably mounted left and right on the inner housing. A second return spring is connected between one end of the sealing plate extending along the radial direction of the inner housing and the inner wall of the inner housing. And one end of this end of the sealing plate close to the axis of the inner housing is fixedly connected with a pushing plate. The part of the sealing plate extending along the axial direction of the inner housing is used for blocking. The pushing plate abuts against the right side wall of the mounting sleeve. The structure of the first closing component is the same as that of the second closing component. The sealing plate in the second closing component slides along the radial direction of the inner housing.

[0016] In a possible implementation manner, the switching mechanism includes a second support frame fixedly connected to the bottom of the handle. A wire winding disc is rotatably mounted on the second support frame. A turning handle located in front of the second support frame is coaxially fixedly connected to the front side of the wire winding disc. A positioning component for limiting the rotation angle of the wire winding disc is mounted on the turning handle. An anti-static rope is wound on the wire winding disc. One end of the sleeve away from the inner housing is fixedly sleeved with a wire releasing disc. After the anti-static rope sequentially bypasses three fixed pulleys in a zigzag shape from top to bottom, the bottom end of the anti-static rope movably penetrates into the interior of the outer shell and is finally wound on the wire releasing disc.

[0017] In a possible implementation manner, the positioning component includes a hollow column fixedly connected to the front side of the turning handle. A positioning rod is slidably mounted back and forth inside the hollow column. A second retaining piece is fixedly connected to the positioning rod. A third return spring is fixedly connected between the front side of the second retaining piece and the inner wall of the hollow column. The rear end of the positioning rod is fixedly connected with an inserting block. The inserting block is slidably mounted back and forth on the rear side of the turning handle. A plurality of limiting grooves are circumferentially and uniformly distributed on the front side of the second support frame. The inserting block is engaged with the limiting grooves. The distribution angle between adjacent limiting grooves is 45°.

[0018] Advantages of the present invention: 1. Through the mutual cooperation of the sampling mechanism and the switching mechanism, the present invention can switch sampling bottles at different positions for sampling, facilitating the sampling of oils at different positions or depths at one time, eliminating the need for repeated sampling, improving the sampling efficiency, and at the same time, the inclination state of the sampling bottle relative to the horizontal liquid level can be adjusted to meet the sampling of different depths at the surface layer, middle layer, and bottom layer.

[0019] 2. By adjusting the sampling bottle to a horizontal orientation, the present invention facilitates quick and effective surface layer or upper layer sampling; by adjusting the sampling bottle to a vertical orientation, it can meet the comprehensive and effective sampling at the bottom of the oil tank, effectively improving the applicability of the sampling device.

[0020] 3. Through the switching mechanism and the anti-static rope, the sampling mechanism can be conveniently controlled to rotate on the oil liquid to switch sampling bottles at different positions, eliminating the need for additional driving sources, reducing the control cost, and at the same time, the overall control of the sampling device has high consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0022] Figure 2 is a cross-sectional view of the outer shell of the present invention.

[0023] Figure 3 is a three-dimensional structural schematic diagram of the inner shell of the present invention.

[0024] Figure 4 is a three-dimensional structural schematic diagram of the mounting sleeve of the present invention.

[0025] Figure 5 is a three-dimensional structural schematic diagram of the driving member of the present invention.

[0026] Figure 6 is a partial cross-sectional view of the limiting component of the present invention.

[0027] Figure 7 is Figure 1 the enlarged view of A in

[0028] Figure 8 is Figure 2 the enlarged view of B in

[0029] Figure 9 is Figure 2 the enlarged view of C in

[0030] Figure 10 is a three-dimensional structural schematic diagram of the switching mechanism of the present invention.

[0031] In the figure: 1. Outer shell; 11. Horizontal sampling port; 12. Vertical sampling port; 13. Sealing cover plate; 2. Handle mechanism; 21. Connection section; 22. Handle; 23. Fixed pulley; 24. Telescopic rod; 25. Arc plate; 26. Positioning bolt; 3. Fixed shaft; 31. Torsion spring; 4. Sampling mechanism; 41. Inner shell; 42. Support frame I; 43. Installation sleeve; 44. Driving part; 441. Bush; 442. Movable plate; 443. Electric push rod; 444. Rack; 445. Gear; 446. Positioning bead; 447. Compression spring; 448. Retaining ring; 45. Limiting component; 451. Limiting frame; 452. Fixed sleeve; 453. Limiting rod; 454. Flap I; 455. Return spring I; 46. Communication port I; 47. Communication port II; 48. Sealing component I; 481. Sealing plate; 482. Return spring II; 483. Push plate; 5. Switching mechanism; 51. Support frame II; 52. Take-up reel; 53. Turning handle; 54. Positioning component; 541. Hollow column; 542. Positioning rod; 543. Flap II; 544. Return spring III; 545. Insert block; 546. Limiting groove; 6. Pay-off reel. Detailed implementation manners

[0032] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation manners disclosed below.

[0033] Please refer to Figure 1 and Figure 2 , a hazardous chemical detection sampling device, including an outer shell 1 and a handle mechanism 2 installed on the outer shell 1. A fixed shaft 3 is fixedly installed inside the outer shell 1, a sampling mechanism 4 is arranged on the fixed shaft 3, and a switching mechanism 5 is installed on the handle mechanism 2 to drive the sampling mechanism 4 to rotate through an anti-static rope to switch the sampling bottle. A horizontal sampling port 11 is opened on the lower left side of the outer shell 1, a vertical sampling port 12 is opened at the bottom of the outer shell 1, and a sealing cover plate 13 is threadedly connected to the right side of the outer shell 1. The sealing cover plate 13 is movably sleeved with the right end of the fixed shaft 3.

[0034] Please refer to Figure 1 and Figure 7, the grip mechanism 2 includes a number of connecting segments 21 connected up and down by means of threaded connection. A handle 22 is fixedly connected to the top of the uppermost connecting segment 21. A fixed pulley 23 distributed up and down is rotatably installed on the right side of the uppermost connecting segment 21, and a telescopic rod 24 located between the two fixed pulleys 23 is fixedly connected to the left side. A screw for locking its telescopic length is installed on the telescopic rod 24. A fixed pulley 23 is also rotatably installed at one end of the telescopic rod 24 away from the connecting segment 21. An arc-shaped plate 25 is fixedly installed on the top of the outer shell 1. The bottom of the lowermost connecting segment 21 is hinged to the arc-shaped plate 25. A positioning bolt 26 with a nut is fixedly connected to the outer wall of the connecting segment 21. An arc-shaped chute coaxial with the hinge point of the lowermost connecting segment 21 is provided on the arc-shaped plate 25. The positioning bolt 26 is movably installed in the arc-shaped chute. After the outer shell 1 rotates to a suitable angle, the arc-shaped plate 25 is locked with the lowermost connecting segment 21 through the cooperation of the nut and the positioning bolt 26.

[0035] During use, an appropriate number of connecting segments 21 can be spliced according to the maximum sampling depth requirement, facilitating the sampling device to enter oil tanks at different depths for sampling. While the total number of connecting segments 21 changes, the total length of the telescopic rod 24 is adjusted so that the length of the anti-static rope between the uppermost fixed pulley 23 and the outer shell 1 adapts to the change in the total length of several connecting segments 21, but the anti-static rope between the uppermost fixed pulley 23 and the outer shell 1 always remains taut.

[0036] Please refer to Figure 1 、 Figure 2 and Figure 3 , the sampling mechanism 4 includes an inner shell 41 rotatably installed on a fixed shaft 3. The left side of the inner shell 41 is designed with a rounded corner. The outer wall of the inner shell 41 abuts against the inner wall of the outer shell 1. A number of fixing members for fixing sampling bottles are rotatably arranged inside the inner shell 41, and the fixing members are evenly distributed along the circumferential direction of the inner shell 41; the fixing member includes symmetrically distributed support frames one 42 installed on the inner ring wall of the inner shell 41. An installation sleeve 43 is rotatably connected between the support frames one 42. The mouth section of the sampling bottle is inserted into the installation sleeve 43. A driving member 44 for driving the installation sleeve 43 to rotate is installed on the inner shell 41. The fixing member further includes a limiting component 45 for limiting the bottom section of the sampling bottle.

[0037] Please refer to Figure 2 、 Figure 3 and Figure 4, on the left side wall and the outer ring wall of the inner shell 41, a first communication port 46 and a second communication port 47 are respectively opened. The first communication port 46 and the second communication port 47 both correspond to the mounting sleeve 43 one by one. When the mounting sleeve 43 rotates to be parallel to the axis of the inner shell 41 horizontally, the bottle mouth of the sampling bottle cooperates with the first communication port 46. When the mounting sleeve 43 rotates to be parallel to the corresponding radial line of the inner shell 41, the bottle mouth of the sampling bottle cooperates with the second communication port 47. The first communication port 46 and the second communication port 47 respectively cooperate with the horizontal sampling port 11 and the vertical sampling port 12. On the inner shell 41, a first closing component 48 and a second closing component for implementing plugging and corresponding to the first communication port 46 and the second communication port 47 one by one are installed. It should be noted that a rubber ring for sealing is installed on the bottle mouth of the sampling bottle to improve the sealing performance of the sampling bottle during rotation and cooperation, prevent the oil product from flowing out, and the bottle mouth of the sampling bottle always contacts the inner wall of the inner shell 41.

[0038] Please refer to Figure 2 , Figure 4 , Figure 5 and Figure 8 , the driving member 44 includes a sleeve 441 that is rotationally sleeved outside the fixed shaft 3 and fixedly connected to the inner shell 41. On the sleeve 441, a movable plate 442 is slidably installed left and right. On the sleeve 441, an electric push rod 443 for pushing the movable plate 442 to move left and right and a power source for supplying power to the electric push rod 443 are fixedly installed. The left end of the telescopic section of the electric push rod 443 is fixedly connected to the movable plate 442. On the rotating shaft of the mounting sleeve 43, a gear 445 is coaxially and fixedly connected. On the right side of the movable plate 442, a rack 444 corresponding to the gear 445 is fixedly connected. The rack 444 meshes with the corresponding gear 445. The rack 444 is slidably connected left and right with the corresponding first support frame 42. A torsion spring 31 is installed between the fixed shaft 3 and the sleeve 441. Each first support frame 42 corresponds to a gear 445.

[0039] By pushing the movable plate 442 to move rightward through the electric push rod 443, the movable plate 442 drives the rack 444 to move rightward. The rack 444 drives the gear 445 to rotate. The gear 445 drives the mounting sleeve 43 and the sampling bottle to rotate, and rotates the mounting sleeve 43 to be parallel to the axis of the inner shell 41, and uses the mounting sleeve 43 to drive the sampling bottle to switch between two states of being parallel to the axis of the inner shell 41 and being parallel to the radial line of the inner shell 41, which is convenient for the sampling bottle to sample at different positions. In order to more conveniently sample the upper layer of the oil tank, the positioning bolt 26 can be loosened first, and then the outer shell 1 can be rotated clockwise by a certain angle to make the horizontal sampling port 11 tilt upward, and then the positioning bolt 26 can be tightened to fix the arc-shaped plate 25 and the connecting section 21 together. In this way, when sampling, it is more convenient for the oil product in the upper layer to enter the horizontal sampling port 11.

[0040] Please refer to Figure 2 , Figure 5 andFigure 8 Inside the movable plate 442, positioning beads 446 are symmetrically installed and slide up and down. A compression spring 447 is fixedly connected between one side of the positioning bead 446 away from the center of the movable plate 442 and the inner wall of the movable plate 442. Grooves that match the positioning beads 446 and are distributed left and right are formed on the sleeve 441. A retaining ring 448 is fixedly connected to the sleeve 441 on the right side of the groove. A wire reel 6 is fixedly sleeved at one end of the sleeve 441 away from the inner housing 41.

[0041] When the installation sleeve 43 is parallel to the radial line of the inner housing 41, the positioning bead 446 cooperates with the left groove to limit the movable plate 442 by using the positioning bead 446. When the movable plate 442 moves to the right, the positioning bead 446 separates from the left groove under the action of thrust. At this time, the compression spring 447 is in a compressed and contracted state. When the installation sleeve 43 rotates to be parallel to the axis of the inner housing 41, the movable plate 442 abuts against the retaining ring 448. At this time, the resilience of the compression spring 447 is used to push the positioning bead 446 to cooperate with the right groove to limit the position of the movable plate 442 again.

[0042] Please refer to Figure 4 and Figure 6 The limiting component 45 includes a U-shaped limiting frame 451 rotatably installed on the installation sleeve 43. After the sampling bottle is installed on the installation sleeve 43, the limiting frame 451 is rotated to clamp the bottom section of the sampling bottle for limiting. A fixed sleeve 452 is fixedly connected to the middle of the limiting frame 451. A U-shaped limiting rod 453 is slidably installed on the fixed sleeve 452. The limiting rod 453 and the limiting frame 451 are arranged in a cross shape. Two parallel sections of the limiting rod 453 are fixedly connected with a first retaining piece 454. A first return spring 455 is fixedly connected between the first retaining piece 454 and the inner wall of the fixed sleeve 452.

[0043] Please refer to Figure 2 、 Figure 4 and Figure 6 When installing the sampling bottle, the installation sleeve 43 is parallel to the axis of the inner housing 41. First, the limiting frame 451 is rotated to a state perpendicular to the installation sleeve 43, then the mouth end of the sampling bottle is inserted into the installation sleeve 43, and then the limiting rod 453 is pulled in a direction away from the limiting frame 451. At this time, the first return spring 455 is in a compressed and contracted state. Then the limiting frame 451 is rotated to a state parallel to the installation sleeve 43, and the limiting frame 451 is rotated to clamp the bottom section of the sampling bottle. Then the pull rod is released. At this time, the limiting rod 453 moves towards the installation sleeve 43 under the push of the first return spring 455, so that the limiting rod 453 is clamped on the bottom section of the sampling bottle, preventing the limiting frame 451 from rotating relative to the sampling bottle, and using the limiting frame 451 to fully limit the sampling bottle and the installation sleeve 43 to ensure the firmness of the installation of the sampling bottle.

[0044] When sampling is completed, the sampling bottle is removed with the bottle mouth facing upward. When removing, first pull the limit rod 453 downward to release the limit on the sampling bottle. While manually holding the sampling bottle still, rotate the limit frame 451 ninety degrees so that the limit frame 451 no longer limits the sampling bottle, and then pull the sampling bottle downward from the mounting sleeve 43.

[0045] See also Figure 2 、 Figure 3 and Figure 9 The sealing component 48 includes an L-shaped sealing plate 481 that is slidably mounted on the inner shell 41 left and right. A return spring 482 is fixedly connected between one end of the sealing plate 481 extending radially along the inner shell 41 and the inner wall of the inner shell 41, and a push plate 483 is fixedly connected to the side of the sealing plate 481 close to the axis of the inner shell 41. The push plate 483 is in conflict with the right side wall of the mounting sleeve 43. The portion of the sealing plate 481 extending axially along the inner shell 41 is used for sealing. The structure of the sealing component 1 48 is the same as that of the sealing component 2. The sealing plate 481 in the sealing component 2 slides radially along the inner shell 41.

[0046] In the initial state, the mounting sleeve 43 is parallel to the axis of the inner shell 41. At this time, the mounting sleeve 43 keeps pushing the push plate 483 in the closing component 1 48, so that the connecting port 1 46 is in an open state, but at this time the sealing plate 481 in the closing component 2 is in a state of blocking the connecting port 2 47. In the process of the mounting sleeve 43 being converted to be parallel to the radial line of the inner shell 41, the pushing force of the mounting sleeve 43 in the closing component 1 48 on the corresponding push plate 483 gradually decreases, and the rebound force of the return spring 2 482 is used to push the corresponding sealing plate 481 to move away from the axis of the inner shell 41, so that the sealing plate 481 blocks the connecting port 1 46. At the same time, the push plate 483 in the closing component 2 moves to the right under the push of the mounting sleeve 43, and the push plate 483 drives the sealing plate 481 to move to the right, so that the connecting port 2 47 is opened. At this time, the corresponding return spring 2 482 is compressed and contracts.

[0047] See also Figure 1 and Figure 10 The switching mechanism 5 includes a support frame 51 fixedly connected to the bottom of the handle 22, and a take-up drum 52 is rotatably installed on the support frame 51. The front side of the take-up drum 52 is coaxially fixedly connected to a turning handle 53 located in front of the support frame 51. The turning handle 53 is provided with a positioning component 54 for limiting the rotation angle of the take-up drum 52. An anti-static rope is wound on the take-up drum 52. The anti-static rope passes through the three fixed pulleys 23 in a broken line shape from top to bottom and then moves through the interior of the shell 1, and is finally wound on the pay-off drum 6.

[0048] See also Figure 1 、 Figure 2 and Figure 10, the positioning component 54 includes a hollow column 541 fixedly connected to the front side of the handle 53. A positioning rod 542 is slidably installed inside the hollow column 541 in the front and rear directions. A second retaining piece 543 is fixedly connected to the positioning rod 542. A third return spring 544 is fixedly connected between the front side of the second retaining piece 543 and the inner wall of the hollow column 541. A plug 545 is fixedly connected to the rear end of the positioning rod 542. The plug 545 is slidably connected to the handle 53 in the front and rear directions. A plurality of circumferentially uniformly distributed limiting grooves 546 are formed on the front side of the second support frame 51. The plug 545 is in snap-fit with the limiting grooves 546. When the handle 53 drives the plug 545 to rotate clockwise from one limiting groove 546 to the next adjacent limiting groove 546, the anti-static rope just drives the wire reel 6 to rotate 45°.

[0049] Please refer to Figures 1 to 10 , in the initial state, the sampling bottle is parallel to the axis of the inner housing 41. The horizontal sampling port 11 is located between two adjacent sampling bottles and the included angle between them is 45°. The bottle mouth of the sampling bottle is docked with the first communication port 46. At this time, the inner housing 41 blocks the horizontal sampling port 11 and the vertical sampling port 12 to prevent oil products from entering the outer shell 1. Then, the outer shell 1 is lowered into the oil products. When sampling the upper and middle layers of the oil products, after moving the outer shell 1 to the position where sampling is required, first release the fixation of the positioning component 54 on the handle 53, and then rotate the handle 53 clockwise to drive the wire take-up reel 52 to rotate, so that the wire take-up reel 52 winds up the anti-static rope. When the handle 53 drives the plug 545 to rotate clockwise from one limiting groove 546 to the next adjacent limiting groove 546, the plug 545 is snapped into the corresponding limiting groove 546 under the restoring force of the third return spring 544, and the wire reel 6 drives the inner housing 41 to rotate 45°. At this time, one of the first communication ports 46 and the second communication port 47 are respectively aligned with the horizontal sampling port 11 and the vertical sampling port 12, and the oil products enter the corresponding sampling bottle through the horizontal sampling port 11 and the first communication port 46. After sampling, first release the fixation of the positioning component 54 on the handle 53, and then continue to rotate the handle 53 clockwise to drive the wire take-up reel 52 to rotate, so that the handle 53 drives the plug 545 to rotate clockwise to the next limiting groove 546, so that the inner housing 41 blocks the horizontal sampling port 11 and the vertical sampling port 12 again. Then, after moving the outer shell 1 to the position where sampling is required, repeat the above steps for multiple samplings.

[0050] When sampling the underlying oil product, first drive the sampling bottle to flip by 90 degrees through the driving member 44, making the sampling bottle parallel to the radial line corresponding to the inner housing 41. At this time, the bottle mouth of the sampling bottle is docked with the second communication port 47. After moving the outer shell 1 to the bottom of the oil tank, rotate the turning handle 53 to drive the wire winding disc 52 to rotate. The lowermost first communication port 46 and the second communication port 47 are respectively aligned with the horizontal sampling port 11 and the vertical sampling port 12, so that the oil product enters the lowermost sampling bottle through the vertical sampling port 12 and the second communication port 47. After sampling, rotate the turning handle 53 again to drive the wire winding disc 52 to rotate, so that the inner housing 41 blocks the horizontal sampling port 11 and the vertical sampling port 12 again.

[0051] Finally, take out the outer shell 1 from the oil tank, then rotate and open the sealing cover plate 13, and disassemble the sampling bottle when the sampling bottle is in the state with the bottle mouth upward. After taking out all the sampling bottles, pull the positioning rod 542 forward. The positioning rod 542 pulls the insertion block 545 forward to separate from the limiting groove 546. At this time, use the resilience of the torsion spring 31 to drive the sleeve 441 to rotate in the reverse direction, so that the wire unwinding disc 6 winds up the anti-static rope. At the same time, the wire winding disc 52 will unwind the anti-static rope, so that the inner housing 41 rotates back to the initial state, which is convenient for subsequent sampling use.

[0052] It should be noted that in order to operate the turning handle 53 more conveniently, the insertion block 545 can be set as a wedge-shaped block structure. The inclined surface of the insertion block 545 cooperates with the limiting groove 546. During the rotation of the turning handle 53, under the action of the third reset spring 544, the insertion block 545 can adaptively plug and cooperate with and separate from the limiting groove 546.

[0053] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0054] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A hazardous chemicals detection and sampling device, comprising a housing, characterized in that: The left side and bottom of the shell are respectively provided with a horizontal sampling port and a vertical sampling port; Sampling mechanism; the sampling mechanism includes an inner shell rotatably disposed within the outer shell, a driving member that rotates a fixed member, the outer wall of the inner shell abutting against the inner wall of the outer shell, and a plurality of fixed members rotatably disposed within the inner shell for fixing the sampling bottle, the fixed members being evenly distributed along the circumference of the inner shell; by adjusting the inclination of the sampling bottle relative to the horizontal liquid surface, sampling at different depths of the surface, middle layer, and bottom can be achieved; The inner shell is provided with a communication port 1 and a communication port 2 corresponding to the fixing member one by one, and a closing component 1 and a closing component 2 for sealing the communication port 1 and the communication port 2 are provided on the inner shell; When the fixing piece is parallel to the axis of the inner shell, the mouth of the sampling bottle is matched with the first communication port; when the fixing piece is parallel to the corresponding radial line of the inner shell, the mouth of the sampling bottle is matched with the second communication port; When the driving member causes the fixing member to rotate and switch the state, the closing component 1 and the closing component 2 are opened or adaptively blocked under the pushing of the installation sleeve; A switching mechanism is provided on the outside of the housing and drives the inner housing to rotate and switch the sampling bottle through an anti-static rope; A handle mechanism is provided on the outside of the housing. The handle mechanism comprises a plurality of connecting segments connected in a threaded manner. The number of connecting segments is adjusted according to the maximum sampling depth, so that the sampling device can enter oil tanks of different depths for sampling. An arc-shaped plate is fixedly installed on the top of the shell, the bottom of the lowest connecting section is hinged to the arc-shaped plate, a positioning bolt with a nut is fixedly connected to the outer wall of the connecting section, and an arc-shaped slide groove coaxial with the hinge point of the lowest connecting section is provided on the arc-shaped plate, and the positioning bolt is movably installed in the arc-shaped slide groove.

2. A hazardous chemicals detection sampling device according to claim 1, characterized in that: A handle is fixedly connected to the top of the uppermost connecting section, and the right side of the uppermost connecting section is rotatably installed with fixed pulleys distributed up and down, and the left side is fixedly connected with a telescopic rod located between the two fixed pulleys. The telescopic rod has a self-locking function, and the end of the telescopic rod away from the connecting section is also rotatably installed with a fixed pulley.

3. The hazardous chemicals detection sampling device according to claim 1, characterized in that: A fixed shaft is fixedly installed inside the outer shell, and the inner shell is rotatably installed on the fixed shaft. The left side of the inner shell adopts a rounded corner design.

4. A hazardous chemicals detection sampling device according to claim 3, characterized in that: The fixing part includes a symmetrically distributed support frame 1 installed on the inner ring wall of the inner shell, and a mounting sleeve is rotatably connected between the support frame 1, and the bottle mouth section of the sampling bottle is inserted into the mounting sleeve.

5. The hazardous chemicals detection sampling device according to claim 4, characterized in that: The driving member includes a shaft sleeve that is rotatably mounted on the outside of the fixed shaft and fixedly connected to the inner shell body, a movable plate is slidably mounted on the shaft sleeve, an electric push rod fixedly connected to the movable plate is fixedly mounted on the shaft sleeve, a gear is coaxially fixedly connected to the rotating shaft of the mounting sleeve, a rack corresponding to the gear one by one is fixedly connected to the right side of the movable plate, the rack is meshed with the corresponding gear, and a torsion spring is installed between the fixed shaft and the shaft sleeve.

6. A hazardous chemicals detection sampling device according to claim 4, characterized in that: The fixing part also includes a limiting component, which includes a U-shaped limiting frame rotatably mounted on the mounting sleeve. The limiting frame limits the bottom section of the sampling bottle. A fixing sleeve is fixedly connected to the middle of the limiting frame. A U-shaped limiting rod is slidably mounted on the fixing sleeve. The limiting rod and the limiting frame are arranged in a cross. Two parallel sections of the limiting rod are fixedly connected to a blocking piece 1, and a reset spring 1 is fixedly connected between the blocking piece 1 and the inner wall of the fixing sleeve.

7. The hazardous chemicals detection sampling device according to claim 4, characterized in that: The sealing component 1 includes an L-shaped sealing plate that is slidably installed on the inner shell body left and right. A return spring 2 is connected between one end of the sealing plate extending radially along the inner shell body and the inner wall of the inner shell body, and the end of the sealing plate close to the axis of the inner shell body is fixedly connected to a push plate. The part of the sealing plate extending axially along the inner shell body is used for sealing, and the push plate conflicts with the right side wall of the mounting sleeve. The structure of the sealing component 1 is the same as that of the sealing component 2, and the sealing plate in the sealing component 2 slides radially along the inner shell body.

8. The hazardous chemicals detection sampling device according to claim 5, characterized in that: The switching mechanism includes a support frame 2 fixedly connected to the bottom of the handle, a take-up reel is rotatably installed on the support frame 2, the front side of the take-up reel is coaxially fixedly connected to a turning handle located in front of the support frame 2, and a positioning component for limiting the rotation angle of the take-up reel is installed on the turning handle, an anti-static rope is wound on the take-up reel, and a pay-off reel is fixedly mounted on the end of the shaft sleeve away from the inner shell, the anti-static rope passes through the three fixed pulleys in a broken line shape from top to bottom, and then moves through the inside of the shell, and is finally wound on the pay-off reel.

9. The hazardous chemicals detection sampling device according to claim 8, characterized in that: The positioning assembly includes a hollow column fixedly connected to the front side of the turning handle, a positioning rod is installed inside the hollow column for sliding back and forth, a baffle 2 is fixedly connected to the positioning rod, a reset spring 3 is connected between the front side of the baffle 2 and the inner wall of the hollow column, an insert is fixedly connected to the rear end of the positioning rod, and a plurality of circumferentially evenly distributed limiting grooves are provided on the front side of the support frame 2, the insert is snap-fitted with the limiting grooves, and the distribution angle between adjacent limiting grooves is 45°.

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