Rapid sampling device for chemical storage tank

Abstract

The invention relates to the technical field of liquid sampling devices, in particular to a chemical storage tank rapid sampling device which comprises a device body, and the device body comprises an upper sampling bottle for collecting upper-layer liquid in a storage tank and a lower sampling bottle for collecting lower-layer liquid in the storage tank. The device body is provided with a liquid discharging port communicated with an upper sampling port of the storage tank, an operation port for taking the upper sampling bottle and the lower sampling bottle out of the device body, and a lifting mechanism for synchronously lifting the upper sampling bottle and the lower sampling bottle; the lifting mechanism comprises an upper lifting assembly for driving the upper sampling bottle to lift, a lower lifting assembly for driving the lower sampling bottle to lift, a rotating part for mounting the upper lifting assembly and the lower lifting assembly, and a driving part for driving the rotating part to rotate so as to enable the upper sampling bottle and the lower sampling bottle to lift synchronously. By arranging the lifting mechanism, synchronous lifting of the upper sampling bottle and the lower sampling bottle can be achieved, upper-layer liquid and lower-layer liquid in the storage tank can be rapidly and synchronously collected, and time and labor are saved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of liquid sampling devices, in particular to a chemical tank rapid sampling device. BACKGROUND

[0002] The tank is a large container for storing liquid or gas, and is widely used in chemical, petroleum, food, pharmaceutical and other industries. However, the liquid medium may be stratified, precipitated or changed in composition under static conditions, resulting in significant quality difference of the liquid at different heights in the same tank. In order to accurately control the material quality and ensure the stability of the subsequent processing, the liquid in the tank needs to be sampled and analyzed to determine whether it meets the industry standards or process requirements.

[0003] The traditional tank sampling method is manual sampling. When sampling, the operator needs to directly observe the inside of the tank, and the gas discharged from the tank is easy to cause harm to the person, and the safety of sampling is low. Now, sampling devices are often used for sampling. The sampling device can only complete sampling at the same height at a time. Due to the stratification of the liquid, the accuracy of single sampling data is low. If samples at different depths are obtained, the sampling process needs to be performed multiple times, which is time-consuming and laborious and increases the opening and closing frequency of the tank sampling interface, which may cause sealing failure or leakage hazards.

[0004] Therefore, a chemical tank rapid sampling device is needed to realize sampling at different heights at a time, ensure the accuracy of sampling data, and improve the sampling efficiency. SUMMARY

[0005] In order to realize sampling at different heights at a time and improve the accuracy of sampling data, the application provides a chemical tank rapid sampling device.

[0006] The application provides a chemical tank rapid sampling device, which adopts the following technical scheme: A chemical tank rapid sampling device, comprising a device body, the device body comprising an upper sampling bottle for collecting upper liquid in a tank and a lower sampling bottle for collecting lower liquid in the tank, the device body being provided with a lower liquid port in communication with an upper sampling interface of the tank and an operation port for taking out the upper sampling bottle and the lower sampling bottle from the device body, the device body being provided with a lifting mechanism for synchronous lifting of the upper sampling bottle and the lower sampling bottle, the lifting mechanism comprising an upper lifting assembly for lifting the upper sampling bottle, a lower lifting assembly for lifting the lower sampling bottle, a rotating piece for mounting the upper lifting assembly and the lower lifting assembly, and a driving piece for driving the rotating piece to rotate to synchronously lift the upper sampling bottle and the lower sampling bottle, the rotating piece being rotatably mounted on the device body, the driving piece being fixed to the rotating piece, and the upper sampling bottle and the lower sampling bottle forming a height difference when moving and sampling.

[0007] By adopting the above technical scheme, the upper lifting assembly and the lower lifting assembly can simultaneously control the upper sampling bottle and the lower sampling bottle to be lifted simultaneously, and the liquid at different heights in the storage tank can be quickly sampled. The upper sampling bottle and the lower sampling bottle have a height difference when moving and sampling, so that the upper sampling bottle and the lower sampling bottle can smoothly take the liquid samples at different heights in the storage tank.

[0008] Optionally, the upper lifting assembly comprises an upper traction rope for adjusting the height of the upper sampling bottle, and an upper winding reel for winding and unwinding the upper traction rope. One end of the upper traction rope is fixed to the upper sampling bottle, and the other end is fixed to the upper winding reel and wound on the upper winding reel. The upper winding reel is coaxially arranged with the rotating member.

[0009] By adopting the above technical scheme, under the driving of the driving member, the rotating member rotates and synchronously drives the upper winding reel to rotate, and the upper winding reel winds and unwinds the upper traction rope, so that the height of the upper sampling bottle can be adjusted, and the upper layer liquid in the storage tank can be conveniently sampled.

[0010] Optionally, the lower lifting assembly comprises a lower traction rope for adjusting the height of the lower sampling bottle, and a lower winding reel for winding and unwinding the lower traction rope. One end of the lower traction rope is fixed to the lower sampling bottle, and the other end is fixed to the lower winding reel and wound on the lower winding reel. The lower winding reel is coaxially arranged with the rotating member.

[0011] By adopting the above technical scheme, the driving member drives the rotating member to rotate, and the rotating member is coaxially arranged with the lower winding reel, so that the rotating member and the lower winding reel are synchronously rotated. The lower winding reel rotates to wind and unwind the lower traction rope, thereby adjusting the height of the lower sampling bottle, and the lower sampling bottle can conveniently sample the lower layer liquid in the storage tank.

[0012] Optionally, the lower lifting assembly further comprises a plugging structure for controlling the opening of the lower sampling bottle to be opened or closed. The plugging structure comprises a counterweight frame for increasing the counterweight of the lower sampling bottle, and a plugging member for plugging the opening of the lower sampling bottle. The counterweight frame is provided with a containing cavity for placing the lower sampling bottle. One end of the counterweight frame is fixed to the lower traction rope. The plugging member comprises a sliding part and a plugging part. The sliding part is slidably installed on the counterweight frame in the lifting direction of the lower sampling bottle, and the bottom of the sliding part protrudes from the bottom of the counterweight frame. The plugging part is matched with the opening of the lower sampling bottle. The sliding part abuts against the bottom of the storage tank to make the plugging part disengage from the opening of the lower sampling bottle.

[0013] By adopting the technical scheme, before sampling, the blocking part of the blocking piece blocks the opening of the lower sampling bottle, ensuring the accuracy of sampling of the lower sampling bottle; when the sliding part of the blocking piece and the bottom of the storage tank are in mutual contact, the sliding part of the blocking piece slides upward, driving the blocking part to separate from the opening of the lower sampling bottle, realizing sampling of the lower liquid in the storage tank by the lower sampling bottle; after the sliding part separates from the contact with the bottom of the storage tank, the blocking part re-blocks the opening of the lower sampling bottle, further enhancing the precise sampling of the lower sampling bottle; the counterweight frame increases the weight of the lower sampling bottle, ensuring that the lower sampling bottle sinks smoothly to the bottom of the storage tank.

[0014] Optionally, the device body is fixedly provided with a rope bundle fixing device for reducing the swing of the upper and lower traction ropes.

[0015] By adopting the technical scheme, the rope bundle fixing device is provided with the first and second through holes, avoiding the entanglement of the upper and lower traction ropes and reducing the swing of the upper and lower traction ropes, thereby ensuring the stable lifting of the upper and lower sampling bottles.

[0016] Optionally, the device body is further rotatably provided with a quick-opening sight glass, which is distributed at the operation port and controls the opening and closing of the operation port.

[0017] By adopting the technical scheme, the quick-opening sight glass can control the opening and closing of the operation port, facilitating the taking out of the upper and lower sampling bottles when the operation port is opened, and effectively sealing the device body when the operation port is closed, thereby playing a protection role.

[0018] Optionally, the device body is further provided with a control assembly for controlling the opening and closing of the lower liquid port, the control assembly comprising a valve body for blocking the lower liquid port and a valve rod for driving the valve body to rotate to realize the opening and closing of the lower liquid port, the valve body and the valve rod being rotatably installed on the device body and one end of the valve rod being fixed to the valve body.

[0019] By adopting the technical scheme, the valve rod drives the valve body to rotate to realize the opening and closing of the lower liquid port; during sampling, the opening of the lower liquid port facilitates the smooth sampling of the upper and lower sampling bottles; after sampling is completed, the closing of the lower liquid port disconnects the device body from the storage tank, thereby avoiding the leakage of gas in the storage tank.

[0020] Optionally, the device body is further provided with an air inlet valve and an air outlet valve for purifying the gas in the device body, the air inlet valve being connected with an air pump, and the air outlet valve being connected with a tail gas purifier.

[0021] By adopting the technical scheme, the air pump sends external gas into the device body through the air inlet valve, harmful gas in the device body is discharged through the air outlet valve, and the tail gas purifier processes the discharged gas, thereby avoiding environmental pollution and keeping the gas in the device clean.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The lifting mechanism enables the upper and lower sampling bottles to be raised and lowered synchronously, allowing for rapid and simultaneous collection of liquid from the upper and lower layers of the storage tank, saving time and manpower; 2. The upper and lower sampling bottles create a height difference during movement and sampling, which can accurately collect liquid samples from different layers and ensure sample accuracy; 3. Before sampling with the lower sampling bottle, the sealing part of the sealing component seals the bottle opening to ensure sampling accuracy. After the lower liquid is sampled, the sealing part reseals the bottle opening to ensure sampling accuracy. The counterweight frame increases the weight of the lower sampling bottle to help it sink smoothly to the bottom of the tank to complete the sampling process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of Embodiment 1 of this application, used to show the sampling device installed on the storage tank; Figure 2 This is a schematic diagram of the sampling device in Embodiment 1 of this application; Figure 3 This is a partial cross-section of Embodiment 1 of this application. Figure 1 This is used to demonstrate the specific structure of the lifting mechanism; Figure 4 This is a partial cross-section of Embodiment 1 of this application. Figure 2 This is used to demonstrate the installation relationship between the first and second structures; Figure 5 This is a partial cross-section of Embodiment 1 of this application. Figure 3 This is used to demonstrate the specific structure of the control components; Figure 6 This is a schematic diagram of the sealing structure in Embodiment 1 of this application, used to illustrate the specific structure of the sealing structure; Figure 7 This is a partial cross-section of Embodiment 1 of this application. Figure 4 This is used to demonstrate that the rope fastener is fixedly installed on the main body of the device; Figure 8 This is a partial cross-section of Embodiment 2 of this application. Figure 1 This is used to demonstrate that the rope harness holder is slidably mounted on the device body; Figure 9 This is a partial structural diagram of Embodiment 2 of this application, used to illustrate the arrangement relationship of the rope bundle fixer, the winding reel, the lifting rope, and the guide rope.

[0024] Label: 1, device body; 111, first structure; 112, sampling cavity; 113, upper sampling bottle; 114, lower sampling bottle; 115, exhaust valve; 116, tail gas purifier; 121, second structure; 122, operation port; 123, first flange interface; 124, threaded hole; 125, bolt; 126, air inlet valve; 127, air pump; 128, quick-opening sight glass; 131, third structure; 132, lower liquid port; 133, second flange interface; 2, storage tank; 211, sampling interface; 3, lifting mechanism; 311, upper lifting assembly; 312, upper traction rope; 313, upper winding reel; 321, lower lifting assembly; 322, lower traction rope; 323, lower winding reel; 331, rotating part; 341, driving part; 351, sealing structure; 352, counterweight frame; 353, sealing part; 354, containing cavity; 355, sliding part; 356, sealing part; 357, sliding groove; 358, corrosion-resistant sealing gasket; 359, blocking block; 360, rotating door; 4, rope bundle fixator; 411, first through hole; 412, second through hole; 5, control assembly; 511, valve body; 512, valve stem; 513, channel; 6, winding reel; 611, pull rope; 612, guide rope; 613, circular hole. DETAILED DESCRIPTION

[0025] The following will be described in detail in combination with the accompanying drawings. Figures 1-9 The present application is further described in detail.

[0026] Example 1: A chemical storage tank rapid sampling device, referring to Figure 1 and Figure 2 , comprising a device body 1, the device body 1 is sequentially provided with a detachable and fixed first structure 111, a second structure 121 and a third structure 131 along the height direction, the first structure 111, the second structure 121 and the third structure 131 are internally communicated and form a sampling cavity 112, further combined with Figure 3The device body 1 is provided with an upper sampling bottle 113 and a lower sampling bottle 114. The manufacturing material of the upper sampling bottle 113 and the lower sampling bottle 114 includes PFA, thereby having stable corrosion resistance. The second structure 121 is provided with operation openings 122 on opposite sides. The upper sampling bottle 113 and the lower sampling bottle 114 are taken out from the device body 1 through the operation openings 122. The third structure 131 is installed on the storage tank 2. The third structure 131 is provided with a lower liquid outlet 132 at an end away from the second structure 121. The storage tank 2 is provided with a sampling interface 211. The lower liquid outlet 132 and the sampling interface 211 are in communication with each other. The device body 1 is further provided with a lifting mechanism 3. The lifting mechanism 3 includes an upper lifting assembly 311, a lower lifting assembly 321, a rotating piece 331, and a driving piece 341. The upper sampling bottle 113 is installed on the upper lifting assembly 311. The lower sampling bottle 114 is installed on the lower lifting assembly 321. The upper lifting assembly 311 and the lower lifting assembly 321 are installed on the rotating piece 331. The rotating piece 331 is rotationally connected with the device body 1. The driving piece 341 drives the rotating piece 331 to rotate. The rotating piece 331 drives the upper lifting assembly 311 and the lower lifting assembly 321 to move synchronously, thereby enabling the upper sampling bottle 113 and the lower sampling bottle 114 to move synchronously. The initial heights of the upper sampling bottle 113 and the lower sampling bottle 114 are consistent. The upper sampling bottle 113 and the lower sampling bottle 114 have a height difference during lifting and sampling, thereby ensuring that the upper sampling bottle 113 successfully samples the upper layer liquid in the storage tank 2 and the lower sampling bottle 114 successfully samples the lower layer liquid in the storage tank 2, and ensuring the accuracy of the sampling result.

[0027] Reference Figure 3 and Figure 4 The manufacturing material of the first structure 111, the second structure 121, and the third structure 131 includes corrosion-resistant metal. The first structure 111 and the second structure 121 are provided with first flange interfaces 123 that are in communication with each other at mutually facing ends. The flange outer edges of the two first flange interfaces 123 are uniformly provided with a plurality of thread holes 124 that are opposite in position. Screws 125 are detachably installed in the thread holes 124. The first structure 111 and the second structure 121 are locked and fixed through threaded connection of the screws 125 and the thread holes 124. Figure 5 The second structure 121 and the third structure 131 are provided with second flange interfaces 133 that are in communication with each other at mutually facing ends. The second structure 121 and the third structure 131 are locked and fixed through threaded connection.

[0028] Reference Figure 1 and Figure 4The second structure 121 is provided with an air inlet valve 126, the air inlet valve 126 is connected with an air pump 127, the air pump 127 conveys air into the sampling cavity 112, the first structure 111 is provided with an air outlet valve 115 at the top, the air outlet valve 115 is connected with a tail gas purifier 116, the harmful gas in the sampling cavity 112 is discharged through the air outlet valve 115, and the tail gas purifier 116 purifies the harmful gas, so that the gas forms a one-way flow, and the pollution to the environment is reduced.

[0029] With reference to Figure 3 The upper lifting assembly 311 comprises an upper traction rope 312 and an upper winding disc 313. The material of the upper traction rope 312 comprises a corrosion-resistant material. One end of the upper traction rope 312 is fixed to the upper sampling bottle 113, and the other end is fixed and wound on the upper winding disc 313. The upper winding disc 313 is fixed coaxially with the rotating member 331. The driving member 341 is a hand wheel, and the rotating member 331 is a rotating shaft. The driving member 341 rotates to drive the rotating shaft to rotate synchronously. The rotating shaft rotates to drive the upper winding disc 313 to rotate synchronously. The rotation of the upper winding disc 313 realizes the winding and unwinding of the upper traction rope 312. The upper sampling bottle 113 is lifted and lowered in the sampling cavity 112.

[0030] With reference to Figure 3 The lower lifting assembly 321 comprises a lower traction rope 322 and a lower winding disc 323. The material of the lower traction rope 322 comprises a corrosion-resistant material. One end of the lower traction rope 322 is fixed to the lower sampling bottle 114, and the other end is fixed and wound on the lower winding disc 323. The lower winding disc 323 is fixed coaxially with the rotating member 331. The driving member 341 rotates to drive the rotating member 331 to rotate synchronously, so that the rotating member 331 and the lower winding disc 323 rotate synchronously. The winding and unwinding of the lower traction rope 322 adjusts the height of the lower sampling bottle 114.

[0031] With reference to Figure 1 And Figure 3 The upper winding disc 313 and the lower winding disc 323 rotate synchronously. The outer diameter of the upper winding disc 313 is smaller than that of the lower winding disc 323, so that the winding and unwinding speed of the upper traction rope 312 is smaller than that of the lower traction rope 322. The initial height of the upper sampling bottle 113 is consistent with that of the lower sampling bottle 114. The descending speed of the upper sampling bottle 113 is smaller than that of the lower sampling bottle 114, so that there is a height difference between the upper sampling bottle 113 and the lower sampling bottle 114 in the sampling process, thereby realizing the sampling of the upper liquid in the storage tank 2 by the upper sampling bottle 113 and the sampling of the lower liquid in the storage tank 2 by the lower sampling bottle 114.

[0032] With reference to Figure 3 And Figure 6The lower lifting assembly 321 further comprises a blocking structure 351, the blocking structure 351 comprising a counterweight frame 352 and a blocking piece 353, the material of the counterweight frame 352 and the blocking piece 353 comprising anticorrosive metal, the counterweight frame 352 being formed with a containing cavity 354, the lower sampling bottle 114 being placed in the containing cavity 354 of the counterweight frame 352, the lower traction rope 322 being fixedly connected with the top end of the counterweight frame 352, the blocking piece 353 comprising an integrally formed sliding part 355 and a blocking part 356, the counterweight frame 352 being provided with a sliding groove 357 extending along the lifting direction of the lower sampling bottle 114, the sliding part 355 being in sliding cooperation with the sliding groove 357, the bottom of the sliding part 355 being protruded from the bottom of the counterweight frame 352, and further in combination with Figure 1 When the sliding part 355 is in abutment with the inner bottom surface of the storage tank 2, the sliding part 355 slides upward, the blocking part 356 is matched with the size of the bottle mouth of the lower sampling bottle 114, the sliding part 355 slides upward to drive the blocking part 356 to be separated from the bottle mouth of the lower sampling bottle 114, the lower layer liquid in the storage tank 2 enters the lower sampling bottle 114, after the sampling of the lower layer liquid is completed, the lower traction rope 322 is wound, the counterweight frame 352 moves upward, the sliding part 355 slides downward under the action of gravity after being separated from the abutment with the inner bottom surface of the storage tank 2, and the blocking part 356 is driven to block the bottle mouth of the lower sampling bottle 114 again.

[0033] With reference to Figure 6 An anticorrosive sealing gasket 358 is arranged at the end of the blocking part 356 facing the lower sampling bottle 114, the sealing gasket 358 being used to seal the gap between the blocking part 356 and the lower sampling bottle 114, a blocking block 359 is arranged at the bottom end of the sliding part 355, the blocking block 359 being used to prevent the sliding part 355 from being separated from the sliding groove 357, and a rotating door 360 is rotatably installed on the side wall of the counterweight frame 352, the rotating door 360 being used to facilitate the taking out of the lower sampling bottle 114 from the counterweight frame 352.

[0034] With reference to Figure 2 And Figure 7 A quick-opening sight glass 128 is rotatably installed at the operation port 122, the quick-opening sight glass 128 being used to open and close the operation port 122, the quick-opening sight glass 128 having a transparent property, the positions of the upper sampling bottle 113 and the lower sampling bottle 114 can be observed through the quick-opening sight glass 128, the rope bundle fixer 4 is fixedly installed on the second structure 121, the rope bundle fixer 4 being located above the operation port 122, the material of the rope bundle fixer 4 comprising anticorrosive metal, the rope bundle fixer 4 being provided with a first through hole 411 and a second through hole 412, the upper traction rope 312 passing through the first through hole 411, and the lower traction rope 322 passing through the second through hole 412.

[0035] With reference to Figure 2 And Figure 5, the third structure 131 is provided with a control assembly 5, the control assembly 5 includes a valve body 511 and a valve rod 512, the valve body 511 is rotatably installed on the third structure 131, one end of the valve rod 512 is fixed with the valve body 511, the valve body 511 is provided with a channel 513 communicated with the sampling cavity 112, and the valve rod 512 rotates to drive the valve body 511 to rotate, so that the valve body 511 blocks the lower liquid port 132.

[0036] The implementation principle of the embodiment 1 of the application is as follows: the exhaust valve 115 and the air inlet valve 126 are opened first, then the valve body 511 is rotated to open the lower liquid port 132, the driving member 341 drives the rotating member 331 to rotate, the rotating member 331 rotates to drive the upper winding disc 313 and the lower winding disc 323 to synchronously rotate, the upper traction rope 312 and the lower traction rope 322 are synchronously wound and unwound, the upper sampling bottle 113 and the lower sampling bottle 114 are synchronously lifted and lowered, the lifting speed of the upper sampling bottle 113 is less than the lifting speed of the lower sampling bottle 114, there is a height difference between the upper sampling bottle 113 and the lower sampling bottle 114 during sampling, the upper sampling bottle 113 completes sampling of the upper layer liquid in the storage tank 2, the lower sampling bottle 114 completes sampling of the lower layer liquid in the storage tank 2, before and after sampling of the lower sampling bottle 114, the blocking part 356 of the blocking member 353 blocks the bottle mouth of the lower sampling bottle 114, during sampling, the blocking part 356 of the blocking member 353 is separated from the bottle mouth of the lower sampling bottle 114, after sampling is completed, the valve body 511 is rotated to close the lower liquid port 132, and then the air inlet valve 126 and the exhaust valve 115 are closed.

[0037] Embodiment 2 A kind of chemical storage tank 2 fast sampling device, refer to Figure 8 And Figure 9 Different from embodiment 1, the rope bundle fixer 4 is different from embodiment 1, the winding disc 6 is fixedly installed on the rotating member 331, the traction rope 611 fixedly wound with the rope bundle fixer 4 is fixed on the winding disc 6, the rope bundle fixer 4 is located above the upper sampling bottle 113 and the lower sampling bottle 114, during the rotating process of the rotating member 331, the rope bundle fixer 4 is synchronously lifted and lowered with the upper sampling bottle 113 and the lower sampling bottle 114, the inner diameters of the upper winding disc 313 and the lower winding disc 323 are all greater than the inner diameter of the winding disc 6, the lifting speed of the rope bundle fixer 4 is less than the lifting speed of the upper sampling bottle 113 and the lower sampling bottle 114, the guide rope 612 is fixedly installed on the second structure 121, the guide rope 612 is provided with two, the guide rope 612 is arranged along the lifting direction of the rope bundle fixer 4, the circular hole 613 that slidably cooperates with the guide rope 612 is further formed in the rope bundle fixer 4, and the number of the circular hole 613 is consistent with that of the guide rope 612.

[0038] The implementation principle of the embodiment 2 of the present application is that the rope bundle fixer 4 is synchronously lifted and lowered with the upper sampling bottle 113 and the lower sampling bottle 114, the anti-winding effect on the upper traction rope 312 and the lower traction rope 322 is strengthened, the guide rope 612 is in sliding fit with the circular hole 613, the rope bundle fixer 4 only makes lifting and lowering movement, the left and right shaking of the upper traction rope 312 and the lower traction rope 322 is avoided, and then the stability of the lifting of the upper sampling bottle 113 and the lower sampling bottle 114 is strengthened.

[0039] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A chemical tank rapid sampling device, comprising a device body (1), the device body (1) comprising an upper sampling bottle (113) for collecting upper liquid in a tank (2) and a lower sampling bottle (114) for collecting lower liquid in the tank (2), the device body (1) being provided with a lower liquid port (132) in communication with an upper sampling interface (211) of the tank (2) and an operation port (122) for taking out the upper sampling bottle (113) and the lower sampling bottle (114) from the device body (1), characterized in that: The device body (1) is provided with a lifting mechanism (3) for synchronous lifting of the upper sampling bottle (113) and the lower sampling bottle (114), the lifting mechanism (3) comprises an upper lifting assembly (311) for lifting the upper sampling bottle (113), a lower lifting assembly (321) for lifting the lower sampling bottle (114), a rotating part (331) for mounting the upper lifting assembly (311) and the lower lifting assembly (321), and a driving part (341) for driving the rotating part (331) to rotate so as to synchronously lift the upper sampling bottle (113) and the lower sampling bottle (114), the rotating part (331) is rotatably mounted on the device body (1), and the driving part (341) is fixed with the rotating part (331), the upper sampling bottle (113) and the lower sampling bottle (114) form a height difference during movement and sampling.

2. The chemical tank rapid sampling device according to claim 1, characterized in that: The upper lifting assembly (311) comprises an upper traction rope (312) for adjusting the height of the upper sampling bottle (113) and an upper winding reel (313) for winding and unwinding the upper traction rope (312), one end of the upper traction rope (312) is fixed with the upper sampling bottle (113), the other end is fixed with the upper winding reel (313) and wound on the upper winding reel (313), and the upper winding reel (313) is coaxially arranged with the rotating part (331).

3. The chemical storage tank rapid sampling device according to claim 2, characterized in that: The lower lifting assembly (321) comprises a lower traction rope (322) for adjusting the height of the lower sampling bottle (114) and a lower winding reel (323) for winding and unwinding the lower traction rope (322), one end of the lower traction rope (322) is fixed with the lower sampling bottle (114), the other end is fixed with the lower winding reel (323) and wound on the lower winding reel (323), and the lower winding reel (323) is coaxially arranged with the rotating part (331).

4. The chemical storage tank rapid sampling device according to claim 3, characterized in that: The lower lifting assembly (321) further comprises a plugging structure (351) for controlling the opening and closing of the lower sampling bottle (114), the plugging structure (351) comprises a counterweight frame (352) for increasing the weight of the lower sampling bottle (114) and a plugging part (353) for plugging the opening of the lower sampling bottle (114), the counterweight frame (352) is provided with a containing cavity (354) for placing the lower sampling bottle (114), and the counterweight frame (352) is fixed with one end of the lower traction rope (322); the plugging part (353) comprises a sliding part (355) and a plugging part (356), the sliding part (355) is slidably mounted on the counterweight frame (352) along the lifting direction of the lower sampling bottle (114) and the bottom of the sliding part (355) protrudes from the bottom of the counterweight frame (352), and the plugging part (356) is matched with the opening of the lower sampling bottle (114), and the sliding part (355) abuts against the bottom of the storage tank (2) to make the plugging part (356) separate from the opening of the lower sampling bottle (114).

5. The chemical storage tank rapid sampling device according to claim 3, characterized in that: The device body (1) is fixedly provided with a rope bundle fixator (4) for reducing the shaking of the upper traction rope (312) and the lower traction rope (322), the rope bundle fixator (4) is provided with a first through hole (411) for the upper traction rope (312) and a second through hole (412) for the lower traction rope (322).

6. The chemical storage tank rapid sampling device according to claim 1, characterized in that: The device body (1) is also rotatably provided with a quick-opening sight glass (128), which is distributed at the operation port (122) and controls the opening and closing of the operation port (122).

7. The chemical storage tank rapid sampling device according to claim 1, characterized in that: The device body (1) is also provided with a control assembly (5) for controlling the opening and closing of the lower liquid outlet (132), which comprises a valve body (511) for blocking the lower liquid outlet (132) and a valve rod (512) for driving the valve body (511) to rotate to realize the opening and closing of the lower liquid outlet (132), wherein the valve body (511) and the valve rod (512) are rotatably installed on the device body (1), and one end of the valve rod (512) is fixed with the valve body (511).

8. The chemical storage tank rapid sampling device according to claim 1, characterized in that: The device body (1) is also provided with an air inlet valve (126) and an exhaust valve (115) for purifying the gas in the device body (1), wherein the air inlet valve (126) is connected with an air pump (127), and the exhaust valve (115) is connected with a tail gas purifier (116).

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