Liquid hazardous chemical loading and unloading controller and loading and unloading control method thereof

Abstract

The invention relates to a liquid hazardous chemical loading and unloading controller and a loading and unloading control method thereof, and relates to the technical field of liquid hazardous chemical conveying, the liquid hazardous chemical loading and unloading controller comprises a mounting table, a power pump is arranged on the mounting table, the two ends of the power pump are connected and communicated with conveying pipelines, and sealing assemblies are arranged at openings in the two ends of the conveying pipelines; the sealing assembly comprises a sealing rubber pipe, a tightness adjusting piece and a first air pressure sensor, one end of the sealing rubber pipe is fixedly arranged outside the conveying pipeline in a sleeving mode, and the tightness adjusting piece is installed at the end, away from the conveying pipeline, of the sealing rubber pipe and used for adjusting the opening size of the end, away from the conveying pipeline, of the sealing rubber pipe. The first air pressure sensor is arranged in the sealing rubber pipe, the conveying pipeline comprises an inner pipe and an outer pipe, the inner pipe and the outer pipe are concentrically arranged, the inner pipe and the outer pipe are connected in a sealing mode, a second air pressure sensor is arranged between the inner pipe and the outer pipe, and the effect that loading and unloading can be stopped in time when leakage occurs is achieved.

Description

Technical Field

[0001] The present application relates to the field of liquid hazardous chemical transportation, and in particular to a liquid hazardous chemical loading and unloading controller and a loading and unloading control method thereof. Background Art

[0002] Hazardous chemicals, in full name, refer to highly toxic chemicals and other chemicals that are harmful to humans, facilities, and the environment, such as poison, corrosion, explosion, combustion, and combustion-supporting properties. After the production of hazardous chemicals is completed, they are transported by hazardous chemical transport vehicles to the destination for storage and use. During this process, there are many connection points, which are prone to leakage accidents of hazardous chemicals. Once a leakage occurs, if the loading and unloading of hazardous chemicals is not stopped in time, it is easy to cause a large-scale leakage, thus causing a major accident. Summary of the invention

[0003] In order to be able to stop loading and unloading in time when leakage occurs, the present application provides a liquid hazardous chemical loading and unloading controller.

[0004] The present application provides a liquid hazardous chemicals loading and unloading controller that adopts the following technical solution: A liquid hazardous chemical loading and unloading controller comprises a mounting platform, on which a power pump is arranged, both ends of the power pump are connected and communicated with a delivery pipeline, both ends of the delivery pipeline are provided with sealing components, the sealing components comprise a sealing rubber tube, a tension adjustment piece and a first air pressure sensor, one end of the sealing rubber tube is sleeved and fixed outside the delivery pipeline, the tension adjustment piece is installed at the end of the sealing rubber tube away from the delivery pipeline, the tension adjustment piece is used to adjust the opening size of the end of the sealing rubber tube away from the delivery pipeline, the first air pressure sensor is arranged in the sealing rubber tube, the delivery pipeline comprises an inner tube and an outer tube, the inner tube and the outer tube are concentrically arranged, the inner tube and the outer tube are sealed and connected, and a second air pressure sensor is arranged between the inner tube and the outer tube.

[0005] By adopting the above technical scheme, the sealing component can seal the connection of the conveying pipeline, reduce the probability of direct leakage of liquid hazardous chemicals after leakage, and at the same time, monitor the air tightness in real time through the first air pressure sensor, and can provide timely feedback when leakage occurs at the connection of the conveying pipeline, thereby reducing the probability of major accidents; the setting of the outer tube can collect the leaked liquid hazardous chemicals when the inner tube ruptures and leaks, reducing the probability of direct leakage of liquid hazardous chemicals, and at the same time, monitor the air tightness in real time through the second air pressure sensor, and can provide timely feedback when the inner tube of the conveying pipeline ruptures and leaks, thereby reducing the probability of major accidents.

[0006] Optionally, the tension adjusting member includes a rubber ring and an elastic cord, the rubber ring is integrally formed with the sealing rubber tube, and the elastic cord is inserted into the sealing rubber tube.

[0007] Optionally, both the inner tube and the outer tube are corrugated tubes, and a plurality of connecting rods are arranged between the inner tube and the outer tube, wherein one end of the connecting rod is fixed to the outer wall of the inner tube and the other end is fixed to the inner wall of the outer tube.

[0008] Optionally, a fixing part is provided at one end of the mounting platform, and the mounting platform is fixedly mounted on the hazardous chemicals transport vehicle through the fixing part. A support foot is provided on the side facing the ground at one end of the mounting platform away from the hazardous chemicals transport vehicle, and the support foot is in contact with the ground. The mounting platform is a metal platform body, and the support foot is a metal rod.

[0009] Optionally, the support leg includes a fixed portion and a sliding portion, the fixed portion is rotatably disposed on the mounting platform, and the sliding portion is inserted into the fixed portion and slides along the length direction of the fixed portion.

[0010] Optionally, a ratchet is provided on the inner wall of the fixing portion, and a pawl is provided at one end of the sliding portion inserted into the fixing portion corresponding to the ratchet, and the ratchet and the pawl cooperate to limit the sliding portion from sliding toward the fixing portion.

[0011] Optionally, both ends of the sliding part are slidably provided with ring sleeves, a linkage rod is provided between the ring sleeves at both ends, and the ring sleeve inserted into one end of the fixed part slides to drive the pawl to be accommodated in the sliding part.

[0012] Optionally, the fixing member includes a fixing rod and a clamping block, the fixing rod is fixed on the mounting table, the clamping blocks are two, both of the two clamping blocks are slidably set on the fixing rod, the fixing rod is provided with threads, and the fixing rod is threadedly connected with an adjusting nut on the opposite sides of the two clamping blocks.

[0013] A method for controlling the loading and unloading of liquid hazardous chemicals comprises the following steps: S1: Fix the installation platform, fix the installation platform on the hazardous chemicals transport vehicle, and make the supporting feet touch the ground for grounding; S2: Connect the two ends of the transmission, connect the hazardous chemical transport vehicle with the hazardous chemical input through the transmission pipeline, or connect the hazardous chemical transport vehicle with the hazardous chemical output through the transmission pipeline; S3: Transporting hazardous chemicals, start the power pump to transport hazardous chemicals, and at the same time start the first air pressure sensor and the second air pressure sensor to monitor the air tightness in real time during the transportation process. When the first air pressure sensor or the second air pressure sensor detects an abnormal air pressure, the power pump is stopped immediately; S4: Disassemble the liquid hazardous chemicals loading and unloading controller. After the transportation is completed, disassemble the liquid hazardous chemicals loading and unloading controller to complete the loading and unloading of liquid hazardous chemicals.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. The sealing component can seal the connection of the conveying pipeline, reduce the probability of direct leakage of liquid hazardous chemicals after leakage, and monitor the air tightness in real time through the first air pressure sensor, and can provide timely feedback when leakage occurs at the connection of the conveying pipeline, thereby reducing the probability of major accidents; the setting of the outer pipe can collect the leaked liquid hazardous chemicals when the inner pipe ruptures and leaks, reducing the probability of direct leakage of liquid hazardous chemicals, and monitor the air tightness in real time through the second air pressure sensor, and can provide timely feedback when the inner pipe of the conveying pipeline ruptures and leaks, thereby reducing the probability of major accidents; 2. The legs are used to support the mounting platform. The mounting platform and metal rods with conductive functions can act as grounding wires, thereby reducing the probability of static electricity igniting flammable liquid hazardous chemicals when transporting flammable liquid hazardous chemicals; 3. The sliding part slides down to the ground under the action of gravity. At the same time, the existence of the pawl and the ratchet limits the storage of the sliding part to ensure the support of the support foot. At the same time, the height can be adjusted according to the actual situation of the installation platform; 4. By driving the ring sleeve located inside the fixed part through the ring sleeve located outside the fixed part, the storage of the pawl can be facilitated, thereby facilitating the storage of the sliding part after use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0016] Figure 2 yes Figure 1 Magnified view of part A in the middle.

[0017] Figure 3 It is a schematic diagram of the overall structure of the embodiment of the present application from another perspective.

[0018] Figure 4 yes Figure 3 Magnified view of part B in the middle.

[0019] In the figure, 1. mounting table; 2. power pump; 3. delivery pipeline; 31. inner tube; 32. outer tube; 4. flange; 5. sealing assembly; 51. sealing rubber tube; 52. elastic adjustment member; 521. rubber ring sleeve; 522. elastic rope; 53. first air pressure sensor; 6. second air pressure sensor; 7. connecting rod; 8. fixing member; 81. fixing rod; 82. clamping block; 9. supporting foot; 91. fixing part; 92. sliding part; 10. elastic bandage; 11. ratchet; 12. pawl; 13. spring; 14. ring sleeve; 15. linkage rod; 16. thread; 17. adjusting nut. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-4 The present application is further described with specific embodiments: First of all, it should be noted that in the description of this application, if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and other directional words appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application; in addition, if the terms "first", "second", "third" and other numerical quantifiers appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", and "connected" appear, they should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, a limited connection such as an interference fit, a transition fit, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium; therefore, for ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0021] The present application embodiment discloses a liquid hazardous chemicals loading and unloading controller, referring to Figure 1 and Figure 2, including a rectangular mounting platform 1, on which a power pump 2 is fixedly installed by bolts, the power pump 2 is electrically connected to the control unit, and the opening and closing of the power pump 2 is controlled by the control unit. The power pump 2 in this embodiment is a power pump 2 for transporting liquid hazardous chemicals, and both ends of the power pump 2 are connected and communicated with a delivery pipeline 3, and both ends of the delivery pipeline 3 are provided with flanges 4, and the delivery pipeline 3 is connected and communicated with the power pump 2 through the flange 4. Sealing components 5 are provided at the openings at both ends of the delivery pipeline 3, and the sealing components 5 include a sealing rubber tube 51, a tension adjustment member 52 and a first air pressure sensor 53, one end of the sealing rubber tube 51 is sleeved and fixed outside the delivery pipeline 3, and the tension adjustment member 52 is installed at the end of the sealing rubber tube 51 away from the delivery pipeline 3 The tension adjustment member 52 is used to adjust the opening size of the sealing rubber tube 51 away from one end of the conveying pipe 3. When the conveying pipe 3 is connected to the hazardous chemical conveying vehicle or the hazardous chemical storage room through the flange, the opening size can be adjusted so that the end of the sealing rubber tube 51 away from the conveying pipe 3 can be sealed on the object connected to the conveying pipe 3, so that the connection of the conveying pipe 3 is sealed by the sealing rubber tube 51. The first air pressure sensor 53 is arranged in the sealing rubber tube 51. In this embodiment, the first air pressure sensor 53 is fixedly arranged on the flange 4 located inside the sealing rubber tube 51. The first air pressure sensor 53 is preferably arranged in an area where the side wall of the flange 4 does not affect the connection of the flange 4. The first air pressure sensor 53 is electrically connected to the control unit. In this embodiment, In the example, a wireless signal generator is arranged on the first air pressure sensor 53, which is electrically connected to the control unit through a radio signal, so as to ensure the sealing degree of the sealing rubber tube 51. The first air pressure sensor 53 can monitor the air pressure in the sealing rubber tube 51 in real time, and feed back the air pressure to the control unit through a radio signal. When liquid hazardous chemicals leak from the connection of the conveying pipeline 3, the liquid hazardous chemicals enter the sealing rubber tube 51, which will cause the air pressure detected by the first air pressure sensor 53 to change, so that the air pressure increases. The first air pressure detection signal is fed back to the control unit through the first air pressure sensor 53. When the first air pressure detection signal is higher than the preset first warning value, the power pump 2 is controlled to be closed, and the delivery of liquid hazardous chemicals is stopped, thereby reducing the possibility of the leakage scale expanding and causing a major accident. The conveying pipeline 3 includes an inner tube 31 and an outer tube 32. The inner tube 31 and the outer tube 32 are concentrically arranged and both ends are connected to the flange 4. The inner tube 31 is connected to the power pump 2 through the flange 4. The inner tube 31 and the outer tube 32 are sealed and connected to form a closed space. A second air pressure sensor 6 is arranged between the inner tube 31 and the outer tube 32. The second air pressure sensor 6 is electrically connected to the control unit. In this embodiment, a wireless signal generator is arranged on the second air pressure sensor 6, which is electrically connected to the control unit through a radio signal to ensure the sealing degree between the inner tube 31 and the outer tube 32. The second air pressure sensor 6 can monitor the air pressure between the inner tube 31 and the outer tube 32 in real time, and feed it back to the control unit through a radio signal. When the inner tube 31 is broken and liquid hazardous chemicals leak,Liquid hazardous chemicals enter between the outer tube 32 and the inner tube 31, causing the air pressure detected by the second air pressure sensor 6 to change and increase. The second air pressure detection signal is fed back to the control unit through the second air pressure sensor 6. When the second air pressure detection signal is higher than the second warning value, the control unit controls the power pump 2 to shut down and stop the delivery of liquid hazardous chemicals, thereby reducing the probability of a major accident caused by the expansion of the leakage scale.

[0022] Reference Figure 1 and Figure 2 The elastic adjustment member 52 includes a rubber ring sleeve 521 and an elastic rope 522. The rubber ring sleeve 521 is integrally formed with the sealing rubber tube 51, and the elastic rope 522 is inserted into the sealing rubber tube 51. In this embodiment, a plurality of notches are provided on the rubber ring sleeve 521 to facilitate the insertion of the elastic rope 522. By tightening the elastic rope 522, the opening of the sealing rubber tube 51 can be driven to deform, thereby controlling the opening size of the sealing rubber tube 51, and the elastic rope 522 is tied to fix it. In this application, a steel wire rope with higher strength can be selected for the strength of the elastic rope 522.

[0023] Reference Figure 1 and Figure 2 The inner tube 31 and the outer tube 32 are both corrugated tubes made of rubber. A plurality of connecting rods 7 are arranged between the inner tube 31 and the outer tube 32. In the present embodiment, there are a plurality of groups of four connecting rods 7, and the plurality of groups of connecting rods 7 are evenly arranged along the length direction of the conveying pipe 3. One end of the connecting rod 7 is fixed to the outer wall of the inner tube 31 and the other end is fixed to the inner wall of the outer tube 32. The connecting rod 7 is a rubber tube integrally formed with the inner tube 31 and the outer tube 32. The corrugations of the inner tube 31 and the outer tube 32 are parallel, so as to facilitate simultaneous unfolding and folding, and ensure that the length of the connecting rod 7 remains unchanged when unfolding or overlapping. The connecting rod 7 can simultaneously drive the inner tube 31 and the outer tube 32 to fold and unfold, and can also ensure the concentricity of the inner tube 31 and the outer tube 32, and provide an installation space for the second air pressure sensor 6.

[0024] Reference Figure 3 and Figure 4A fixing member 8 is provided at one end of the mounting platform 1. In this embodiment, two groups of fixing members 8 are provided. The fixing member 8 includes a fixing rod 81 and a clamping block 82. The fixing rod 81 is vertically fixed on the upper surface of the mounting platform 1. Each group of clamping blocks 82 of the fixing member 8 has two pieces. The two clamping blocks 82 are slidably arranged on the fixing rod 81. The fixing rod 81 is provided with a thread 16. The fixing rod 81 is threadedly connected with an adjusting nut 17 on the opposite side of the two clamping blocks 82. The two clamping blocks 82 are driven to slide by rotating the adjusting nut 17. The two clamping blocks 82 are slidably clamped and fixed on the hazardous chemical transport vehicle. At the same time, the mounting platform 1 can be adjusted on the hazardous chemical transport vehicle by adjusting the position of the two clamping plates on the fixing rod 81. The height of the mounting platform 1 on the hazardous chemical transport vehicle is adapted to hazardous chemical transport vehicles of different heights. The mounting platform 1 is fixedly installed on the hazardous chemical transport vehicle through a fixing part 8. A support leg 9 is arranged on the side of the mounting platform 1 facing the ground away from the hazardous chemical transport vehicle. The support leg 9 is in contact with the ground. The mounting platform 1 is a metal platform body with a conductive function, and the support leg 9 is a metal rod with a conductive function. In this embodiment, the metal platform body and the metal rod are both made of copper alloy. The support leg 9 is used to support the mounting platform 1. At the same time, the mounting platform 1 and the metal rod with a conductive function can act as a grounding wire, thereby reducing the probability of static electricity igniting flammable liquid hazardous chemicals when transporting flammable liquid hazardous chemicals. In this embodiment, two support legs 9 are arranged.

[0025] Reference Figure 3 and Figure 4The support leg 9 includes a fixed portion 91 and a sliding portion 92. In this embodiment, the fixed portion 91 and the sliding portion 92 are both rods. The fixed portion 91 is rotatably arranged on the mounting platform 1. The fixed portion 91 is a hollow rod. The sliding portion 92 is inserted into the fixed portion 91 and slides along the length direction of the fixed portion 91. An elastic bandage 10 is fixed on the mounting platform 1. The elastic bandage 10 is used to fix the support leg 9 and limit the rotation of the support leg 9 when the support leg 9 is rotated to the horizontal. A ratchet 11 is provided on the inner wall of the fixed portion 91. One end of the sliding portion 92 inserted into the fixed portion 91 is rotatably arranged corresponding to the ratchet 11. There is a pawl 12, and the ratchet 11 and the pawl 12 cooperate to limit the sliding part 92 from sliding toward the fixed part 91. The ratchet 11 is arranged in two rows on the inner wall of the fixed part 91, and two pawls 12 are arranged corresponding to the ratchet 11. A spring 13 is arranged between the pawl 12 and the sliding part 92, and the spring 13 drives the pawl 12 to rotate away from the sliding part 92. When the fixed part 91 rotates to a vertical state, the sliding part 92 slides to abut the ground under the action of gravity. At the same time, the existence of the pawl 12 and the ratchet 11 limits the storage of the sliding part 92 to ensure the support foot 9 The supporting function can also be adjusted in height according to the actual situation of the mounting platform 1; both ends of the sliding portion 92 in the length direction are slidably provided with ring sleeves 14, and a linkage rod 15 is provided between the ring sleeves 14 at both ends. In this embodiment, two linkage rods 15 are provided and are embedded in the sliding portion 92. The two linkage rods 15 are misaligned with the ratchet teeth 11 and the pawls 12. The ring sleeve 14 inserted into one end of the fixed portion 91 slides to drive the pawl 12 to squeeze the spring 13 and store the pawl 12 into the sliding portion 92, and the ring sleeve 14 located outside the fixed portion 91 drives the ratchet 12 located at the fixed portion 91 to slide. The ring sleeve 14 in 91 can facilitate the storage of the pawl 12, thereby facilitating the storage of the sliding part 92 after use. The ring sleeve 14 is fixed to the sliding part 92 by friction. When the friction of the ring sleeve 14 is insufficient, the sliding sleeve can be fixed by drilling holes in the ring sleeve 14 at one end away from the fixed part 91 and installing bolts; in order to ensure that the length of the support leg 9 is sufficient, an extension part of the sliding setting can be added inside the sliding part 92, and the connection structure between the extension part and the sliding part 92 is the same as the connection structure between the fixed part 91 and the sliding part 92.

[0026] A method for controlling the loading and unloading of liquid hazardous chemicals comprises the following steps: S1: fixing a mounting platform 1, clamping and fixing the mounting platform 1 on a hazardous chemical transport vehicle through a fixing member 8, and adjusting the height of the mounting platform 1 according to the inlet and outlet heights of the hazardous chemical transport vehicle, and then rotating the support leg 9 to a vertical state, and making the support leg 9 abut against the ground for grounding through the sliding of a sliding part 92; S2: connecting the two ends of the conveying, connecting the hazardous chemical transport vehicle with a hazardous chemical input through a conveying pipeline 3 or connecting the hazardous chemical transport vehicle with a hazardous chemical output through a conveying pipeline 3, and at the same time sealingly setting a sealing component 5 at the connection of the conveying pipeline 3, and observing the first The detection values ​​of the first air pressure sensor 53 and the second air pressure sensor 6 are recorded as preset values; S3: transport hazardous chemicals, start the power pump 2 to transport hazardous chemicals, and at the same time start the first air pressure sensor 53 and the second air pressure sensor 6 to monitor the air tightness in real time during the transportation process. When the first air pressure sensor 53 or the second air pressure sensor 6 detects that the air pressure is abnormally higher than the preset value, stop the power pump 2 immediately to eliminate the leakage fault; S4: disassemble the liquid hazardous chemical loading and unloading controller, and disassemble the liquid hazardous chemical loading and unloading controller after the fault is eliminated or no fault occurs until the transportation is completed to complete the loading and unloading of liquid hazardous chemicals.

[0027] The implementation principle of the embodiment of the present application is: when liquid hazardous chemicals need to be loaded, the hazardous chemicals transport vehicle and the hazardous chemicals output are connected through the flange 4; when liquid hazardous chemicals need to be unloaded, the hazardous chemicals transport vehicle and the hazardous chemicals input are connected through the flange 4; the power pump 2 provides power to transport liquid hazardous chemicals. When a leak occurs at the connection of the conveying pipeline 3, the leaked liquid hazardous chemicals enter the sealing rubber tube 51, causing the air pressure in the sealing rubber tube 51 to change. After the first air pressure sensor 53 detects the air pressure change, it feeds back the leakage situation and stops the power pump 2 from working, avoiding leakage. The leakage situation expands and causes a major accident. At the same time, the sealing rubber tube 51 can receive a small amount of leaked liquid hazardous chemicals to prevent the liquid hazardous chemicals from flowing out and polluting the environment. When the conveying pipeline 3 ruptures and leaks, the leaked liquid hazardous chemicals enter between the outer tube 32 and the inner tube 31, causing the air pressure between the outer tube 32 and the inner tube 31 to change. After the second air pressure sensor 6 detects the air pressure change, it feedbacks the leakage situation and stops the power pump 2 from working, avoiding the leakage situation from expanding and causing a major accident. At the same time, the outer tube 32 can receive a small amount of leaked liquid hazardous chemicals to prevent the liquid hazardous chemicals from flowing out and polluting the environment.

[0028] It should be noted that the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although the present application has been described in detail in this specification with reference to the above embodiments, a person of ordinary skill in the art should understand that a person of ordinary skill in the art can still modify or make equivalent substitutions to the present application, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A liquid hazardous chemicals loading and unloading controller, characterized by: The invention comprises a mounting platform (1), wherein a power pump (2) is arranged on the mounting platform (1), and both ends of the power pump (2) are connected and communicated with a delivery pipeline (3), and both ends of the delivery pipeline (3) are provided with sealing components (5), and the sealing components (5) comprise a sealing rubber tube (51), a tension adjustment member (52) and a first air pressure sensor (53), wherein one end of the sealing rubber tube (51) is sleeved and fixed outside the delivery pipeline (3), and the tension adjustment member (52) is installed at one end of the sealing rubber tube (51) away from the delivery pipeline (3), and the tension adjustment member (52) is installed at one end of the sealing rubber tube (51) away from the delivery pipeline (3). 2) used to adjust the size of the opening of the sealing rubber tube (51) away from one end of the delivery pipeline (3), the first air pressure sensor (53) is arranged in the sealing rubber tube (51), the delivery pipeline (3) comprises an inner tube (31) and an outer tube (32), the inner tube (31) and the outer tube (32) are arranged concentrically, the inner tube (31) and the outer tube (32) are sealed and connected, a second air pressure sensor (6) is arranged between the inner tube (31) and the outer tube (32), and the first air pressure sensor (53) and the second air pressure sensor (6) shut down the power pump (2) after detecting an increase in air pressure.

2. A liquid hazardous chemicals loading and unloading controller according to claim 1, characterized in that: The tension adjustment member (52) comprises a rubber ring (521) and an elastic cord (522); the rubber ring (521) is integrally formed with the sealing rubber tube (51); and the elastic cord (522) is inserted into the sealing rubber tube (51).

3. A liquid hazardous chemicals loading and unloading controller according to claim 1, characterized in that: The inner tube (31) and the outer tube (32) are both corrugated tubes, the corrugations of the inner tube (31) and the outer tube (32) are parallel, a plurality of connecting rods (7) are arranged between the inner tube (31) and the outer tube (32), one end of the connecting rod (7) is fixedly arranged on the outer wall of the inner tube (31) and the other end is fixedly arranged on the inner wall of the outer tube (32), and the second air pressure sensor (6) is mounted on the connecting rod (7).

4. A liquid hazardous chemicals loading and unloading controller according to claim 1, characterized in that: A fixing member (8) is provided at one end of the mounting platform (1), and the mounting platform (1) is fixedly mounted on the hazardous chemicals transport vehicle via the fixing member (8). A support foot (9) is provided on the side of the mounting platform (1) facing the ground away from the hazardous chemicals transport vehicle, and the support foot (9) abuts against the ground. The mounting platform (1) is a metal platform body, and the support foot (9) is a metal rod.

5. A liquid hazardous chemicals loading and unloading controller according to claim 4, characterized in that: The support leg (9) comprises a fixed portion (91) and a sliding portion (92); the fixed portion (91) is rotatably disposed on the mounting platform (1); and the sliding portion (92) is inserted into the fixed portion (91) and slides along the length direction of the fixed portion (91).

6. A liquid hazardous chemicals loading and unloading controller according to claim 5, characterized in that: The inner wall of the fixed portion (91) is provided with a ratchet (11), and one end of the sliding portion (92) inserted into the fixed portion (91) is provided with a pawl (12) corresponding to the ratchet (11), and the ratchet (11) and the pawl (12) cooperate to limit the sliding portion (92) from sliding in the direction of the fixed portion (91).

7. A liquid hazardous chemicals loading and unloading controller according to claim 6, characterized in that: Both ends of the sliding portion (92) are slidably provided with ring sleeves (14), a linkage rod (15) is provided between the ring sleeves (14) at both ends, and the ring sleeve (14) inserted into one end of the fixed portion (91) slidably drives the ratchet pawl (12) to be accommodated in the sliding portion (92).

8. A liquid hazardous chemicals loading and unloading controller according to claim 7, characterized in that: The fixing member (8) comprises a fixing rod (81) and a clamping block (82). The fixing rod (81) is fixedly mounted on the mounting platform (1). The clamping blocks (82) are two in number. The two clamping blocks (82) are both slidably mounted on the fixing rod (81). The fixing rod (81) is provided with a thread (16). The fixing rod (81) is threadedly connected with an adjusting nut (17) on opposite sides of the two clamping blocks (82).

9. A method for controlling the loading and unloading of liquid hazardous chemicals, which is used in the liquid hazardous chemicals loading and unloading controller according to claim 8, comprising the following steps: S1: fixing the mounting platform (1), fixing the mounting platform (1) on the hazardous chemicals transport vehicle, and making the support foot (9) abut against the ground for grounding; S2: connecting the two ends of the transmission, connecting the hazardous chemical transport vehicle with the hazardous chemical input through the transmission pipeline (3) or connecting the hazardous chemical transport vehicle with the hazardous chemical output through the transmission pipeline (3); S3: transporting hazardous chemicals, starting the power pump (2) to transport the hazardous chemicals, and simultaneously starting the first air pressure sensor (53) and the second air pressure sensor (6) to monitor the air tightness in real time during the transport process, and immediately stopping the power pump (2) when the first air pressure sensor (53) or the second air pressure sensor (6) detects an abnormal air pressure; S4: Disassemble the liquid hazardous chemicals loading and unloading controller. After the transportation is completed, disassemble the liquid hazardous chemicals loading and unloading controller to complete the loading and unloading of liquid hazardous chemicals.

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