System for automatically and safely opening oil unloading tank during electrostatic discharge of tank car of gas station

Abstract

The utility model relates to the technical field of oil unloading tanks, and discloses a gas station tank car electrostatic discharge automatic safe oil unloading tank opening system which comprises an electrostatic frame, an electrostatic clamp and a protection box, and a timing trigger is fixedly installed on the front face of the electrostatic frame. Compared with a traditional oil unloading tank, the oil unloading tank has the advantages that automatic monitoring of electrostatic discharge and intelligent control of oil unloading operation are achieved by additionally arranging the timing trigger, and before the specified time of electrostatic discharge of the oil tank truck is not reached, the PLC cannot send signals to the motor control module, the oil unloading operation is strictly forbidden, and the oil unloading efficiency is improved. A fire hazard or explosion risk caused by incomplete release of static electricity due to non-standard manual operation is completely eradicated, and only when the oil tank truck arrives at a station and the static clamp is correctly clamped to the special position of the oil tank truck for more than 300 seconds, the lock cylinder and the lock catch are driven to rotate through cooperation between the full gear and the half gear, so that the lock catch releases limitation on the buckle.

Description

Technical Field

[0001] The utility model relates to the technical field of oil tank unloading, and more specifically, to an automatic and safe oil tank unloading system for static discharge of tank trucks at gas stations. Background Art

[0002] The automatic and safe opening system for the tank truck static discharge of the gas station is an advanced safety system. Its main function is to ensure that the static electricity can be automatically and safely released and the tank can be opened when the tank truck is unloading oil at the gas station. This system is of great significance for preventing fire or explosion accidents caused by static electricity, and improves the working efficiency and safety of the gas station. The function of the existing static discharge device for tank trucks is limited to the connection of the static discharge circuit, and it is impossible to accurately judge the time and effect of the release. This defect causes the static discharge process to rely entirely on manual operation, which increases uncertainty and risk. If the static discharge of the tank truck is not sufficient, static electricity is easily released suddenly during the unloading process, generating strong current energy, which in turn ignites the surrounding flammable gases, causing combustion or even explosion, causing great harm to personnel safety and the environment. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a system for automatically and safely opening an oil tank unloading tank by static discharge of a tank truck at a gas station, which has the advantage of being convenient for unloading oil from the oil tank.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a system for automatically and safely opening and unloading a tank by electrostatic discharge of a tank truck at a gas station, comprising an electrostatic rack, an electrostatic clamp and a protection box, a timing trigger is fixedly installed on the front of the electrostatic rack, and a display screen is arranged on the front of the timing trigger, one end of a cable is fixedly connected to the right of the timing trigger, and the other end of the cable is fixedly connected to the electrostatic clamp, and an audible and visual prompter is fixedly installed on the top of the timing trigger;

[0005] A connecting line is connected between the left side surface of the protection box and the bottom end of the timing trigger, a box cover is hinged on the top of the protection box, support blocks are rotatably installed on both sides of the inner wall of the protection box, a cylinder is fixedly installed on the top of the support block, and the output end of the cylinder is hinged to the inner side surface of the box cover, and a buckle is fixedly installed on the bottom end of the box cover.

[0006] The inner side of the protection box is provided with a cavity, a motor is fixedly installed inside the cavity, a half gear is fixedly installed at the output end of the motor, a rotating rod is fixedly installed inside the cavity, a fixed tube is fixedly installed on the front side of the rotating rod, a telescopic rod is movably sleeved inside the fixed tube, the front side of the telescopic rod passes through the fixed tube and a full gear is fixedly installed, and the full gear and the half gear are meshed with teeth, a limiting tube is fixedly installed on the front side of the full gear, a lock core is movably sleeved inside the limiting tube, a slide groove 1 and an annular groove 1 are provided on the outer surface of the lock core, and a blocking block 2 located inside the slide groove 1 is fixedly installed on the inner side of the limiting tube; a lock buckle is fixedly installed on the outer surface of the lock core, a tension spring is fixedly installed between the bottom end of the lock buckle and the bottom surface of the cavity, and a spring is fixedly installed between the back side of the full gear and the front side of the fixed tube.

[0007] As a preferred technical solution of the utility model, a door lock is fixedly installed on the front of the lock core, a second ring groove and a second slide groove are provided inside the lock core, and a blocking block is fixedly installed inside the second ring groove.

[0008] As a preferred technical solution of the utility model, a fixing plate is fixedly installed at the bottom of the electrostatic rack, and threaded holes are opened inside the fixing plate, and the threaded holes present four shapes of the same size.

[0009] As a preferred technical solution of the utility model, a dust-proof cover is fixedly installed on the front of the electrostatic rack, and the dust-proof cover is in an arc shape.

[0010] As a preferred technical solution of the utility model, a handrail is fixedly installed on the top of the box cover, and the handrail is in an inverted U shape.

[0011] As a preferred technical solution of the utility model, the distance between the second blocking block and the first annular groove is equal to the distance between the telescopic rod and the inside of the fixed tube.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. Compared with the traditional oil unloading tank, the utility model realizes automatic monitoring of static electricity release and intelligent control of oil unloading operation by adding a timing trigger. Before the static electricity release of the tank truck does not reach the specified time, the PLC will not send a signal to the motor control module, and the oil unloading operation is strictly prohibited, eliminating the risk of fire or explosion caused by incomplete static electricity release due to improper manual operation. Only when the tank truck arrives at the station, the static electricity clamp is correctly clamped to the special position of the tank truck to remove static electricity for more than 300 seconds, and the lock core and the lock buckle are driven to rotate through the cooperation between the full gear and the half gear, so that the lock buckle releases the restriction on the buckle, and the interior of the protection box is slowly opened through the box cover, thereby realizing automatic opening of the box cover, allowing the oil unloader to insert the connecting pipe of the tank truck into the oil unloading pipe inside the protection box, and then perform the oil unloading operation. The innovative design significantly improves the inherent safety of the gas station.

[0014] 2. Compared with the traditional oil unloading, the utility model facilitates opening the interior of the protection box through the cooperation between the key and the lock core, realizing the manual unlocking function. This feature is particularly important in the event of power outages or failures, avoiding the situation where the oil unloading box cannot be opened due to power failures. The manual unlocking operation is simple and does not require reliance on an external power supply, thereby improving the efficiency and reliability of the oil unloading box. Whether it is daily operation or emergency handling, this design can bring great convenience to users, ensuring that the oil unloading box can be opened smoothly at critical moments, meeting various usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front three-dimensional appearance structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional appearance structure of the back of the utility model;

[0017] Figure 3 This is a schematic diagram of the handrail structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the protection box of the utility model;

[0019] Figure 5 For this utility model Figure 4 A in the figure is a schematic diagram of an enlarged structure;

[0020] Figure 6 This is a schematic diagram of the cross-sectional structure of the protection box of the utility model;

[0021] Figure 7 This is a diagram showing the overall structure of the lock core of the utility model;

[0022] Figure 8 This is a schematic diagram of the cross-sectional structure of the lock core of the utility model;

[0023] Fig. 9 For this utility model Figure 8 The enlarged structural diagram at B in FIG.

[0024] Fig.10 This is a schematic diagram of the structure of the electrostatic clamp of the utility model.

[0025] In the figure: 1. electrostatic rack; 2. timing trigger; 3. display screen; 4. sound and light prompter; 5. electrostatic clamp; 6. dust cover; 7. fixing plate; 8. threaded hole; 9. cable; 10. connecting wire; 11. box cover; 12. handrail; 13. protection box; 14. annular groove 2; 15. cylinder; 16. support block; 17. buckle; 18. blocking block 2; 19. door lock; 20. lock core; 21. cavity; 22. lock buckle; 23. limit tube; 24. full gear; 25. half gear; 26. spring; 27. tension spring; 28. motor; 29. ​​slide groove 1; 30. fixing tube; 31. rotating rod; 32. blocking block 1; 33. slide groove 2; 34. annular groove 1; 35. telescopic rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figures 1 to 10 As shown, the utility model provides a system for automatically opening and unloading a tank tank by electrostatic discharge of a tank truck at a gas station, comprising an electrostatic rack 1, an electrostatic clamp 5 and a protection box 13, a timing trigger 2 is fixedly installed on the front of the electrostatic rack 1, and a display screen 3 is arranged on the front of the timing trigger 2, one end of a cable 9 is fixedly connected to the right side of the timing trigger 2, and the other end of the cable 9 is fixedly connected to the electrostatic clamp 5, and an audible and visual prompter 4 is fixedly installed on the top of the timing trigger 2;

[0028] A connecting line 10 is connected between the left side surface of the protection box 13 and the bottom end of the timing trigger 2, a box cover 11 is hinged on the top of the protection box 13, support blocks 16 are rotatably installed on both sides of the inner wall of the protection box 13, a cylinder 15 is fixedly installed on the top of the support block 16, and the output end of the cylinder 15 is hinged to the inner side surface of the box cover 11, and a buckle 17 is fixedly installed on the bottom end of the box cover 11.

[0029] The inner side of the protection box 13 is provided with a cavity 21, a motor 28 is fixedly installed inside the cavity 21, a half gear 25 is fixedly installed at the output end of the motor 28, a rotating rod 31 is fixedly installed inside the cavity 21, a fixed tube 30 is fixedly installed on the front of the rotating rod 31, a telescopic rod 35 is movably sleeved inside the fixed tube 30, the front of the telescopic rod 35 passes through the fixed tube 30 and is fixedly installed with a full gear 24, and the full gear 24 is meshed with the half gear 25, and the full gear 24 is meshed with the half gear 25. A limiting tube 23 is fixedly installed on the front side of 24, and a lock core 20 is movably sleeved inside the limiting tube 23. A slide groove 29 and a ring groove 34 are provided on the outer surface of the lock core 20, and a blocking block 218 located inside the slide groove 29 is fixedly installed on the inner side surface of the limiting tube 23. A lock buckle 22 is fixedly installed on the outer surface of the lock core 20, and a tension spring 27 is fixedly installed between the bottom end of the lock buckle 22 and the bottom surface of the cavity 21, and a spring 26 is fixedly installed between the back side of the full gear 24 and the front side of the fixed tube 30.

[0030] When the tanker truck enters the gas station, the staff needs to unload the oil inside the tanker truck into the internal oil unloading pipe of the protection box 13. The tanker truck needs to release static electricity before unloading the oil. The cable 9 is driven to move by holding the static clamp 5, and the static clamp 5 is clamped to a special part of the tanker truck, and then the static electricity is released. At this time, the timing trigger 2 receives the closing signal of the static clamp 5 and starts timing. There are two contacts on the inner side of the static clamp 5. After the contacts come into contact with the metal parts on the tanker truck, the two wires connecting the two contacts of the static clamp 5 are electrically connected to form a path, so that the timing trigger 2 starts working and timing, and the static connection time is displayed on the display screen 3. When it reaches 300 seconds, the sound and light prompter 4 reminds that the static electricity is released. The PLC inside the static rack 1 will send a signal to the motor control module, so that the motor control module controls the motor 28 to start (the PLC sends a signal The signal is given to the motor control module, and the motor control module controls the motor to work (which is existing common knowledge), and the half gear 25 is driven to rotate by the motor 28, and the teeth between the half gear 25 and the full gear 24 are meshed, and the full gear 24 is driven to rotate by the half gear 25, and then the limiting tube 23 is driven to rotate by the full gear 24, and then the lock core 20 is driven to rotate by the limiting tube 23, and then the lock buckle 22 is driven to rotate by the lock core 20, and the tension spring 27 is squeezed by the lock buckle 22 so that the lock buckle 22 unlocks the buckle 17, and now the support block 16 and the box cover 11 are squeezed by the cylinder 15, so that the box cover 11 and the buckle 17 slowly leave the cavity 21. When the smooth surface of the full gear 24 touches the smooth surface of the teeth of the half gear 25, at this time, the lock buckle 22 drives the tension spring 27 to automatically lock the box under the extrusion force, thereby opening the inside of the protective box 13.

[0031] Compared with the traditional oil unloading tank, the oil unloading tank realizes automatic monitoring of electrostatic discharge and intelligent control of oil unloading operation by adding a timing trigger. Before the electrostatic discharge of the refueling truck reaches the specified time, the timing trigger will unload the oil tank and strictly prohibit the oil unloading operation, thereby eliminating the risk of fire or explosion caused by incomplete release of static electricity due to improper manual operation. Only when the tank truck arrives at the station and the electrostatic clamp is correctly clamped to the special position of the tank truck for more than 300 seconds, the lock core 20 and the lock buckle 22 are driven to rotate through the cooperation between the full gear 24 and the half gear 25, so that the lock buckle 22 releases the restriction on the buckle 17, and the interior of the protective box 13 is slowly opened through the box cover 11, thereby realizing automatic opening of the box cover 11 and allowing oil loading and unloading operations. The innovative design significantly improves the inherent safety of the gas station.

[0032] The front of the lock core 20 is fixedly mounted with a door lock 19, the interior of the lock core 20 is provided with a second annular groove 14 and a second sliding groove 33, and a blocking block 32 is fixedly mounted inside the second annular groove 14;

[0033] When the electrostatic rack 1 is powered off or fails, it is necessary to manually open the interior of the protection box 13 to unload the oil from the oil unloading tank. The key is inserted into the door lock 19 and the lock core 20 so that the key slides inside the second slide groove 33. The key squeezes the full gear 24 inside the lock core 20, and the spring 26 and the telescopic rod 35 are squeezed synchronously through the full gear 24. The telescopic rod 35 moves inside the fixed tube 30. When the end of one end of the key contacts the full gear 24, the full gear 24 and the limiting tube 23 are squeezed synchronously through the end of the key, and the limiting tube 23 drives the blocking block 2 18 to move inside the slide groove 1 29. Slide into the ring groove 1 34 so that the blocking block 18 releases the restriction on the lock core 20, allowing the lock core 20 and the limiting tube 23 to rotate independently without interfering with each other, thereby realizing the independent operation of electric control and manual control, and then the manual operation will not be affected by the electric control, and the manual unlocking operation is realized. When the key enters the interior of the ring groove 14 and the key touches the blocking block 1 32, the lock core 20 and the rotating rod 31 are rotated by the key, and the lock core 20 drives the lock buckle 22 to rotate, and the buckle 17 is unlocked by the lock buckle 22, so that the buckle 17 is separated from the interior of the cavity 21, thereby completing the manual unlocking of the box cover 11.

[0034] When the electrostatic rack 1 is powered off or fails, it is necessary to manually open the protection box 13 to unload the oil from the oil unloading tank, and insert the key into the door lock 19 and the lock core 20 so that the key slides inside the slide groove 23, and the full gear 24 is squeezed inside the lock core 20 by the key, and the spring 26 and the telescopic rod 35 are synchronously squeezed by the full gear 24, and the telescopic rod 35 is moved inside the fixed tube 30. When the end of one end of the key contacts the full gear 24, the full gear 24 and the limiting tube 23 are synchronously squeezed by the end of the key, and the limiting tube 23 drives the blocking block 218 to slide inside the slide groove 29 into the ring groove 134, so that the blocking block 218 releases the restriction on the lock core 20, and the lock core 20 and the limiting tube 23 rotate independently without interfering with each other, thereby realizing the independent operation of electric control and manual control, and then making the manual operation process The lock 20 and the locking nut 22 are connected to the locking nut 21, and the locking nut 22 is connected to the locking nut 21, so that the locking nut 21 is unlocked and the locking nut 22 is connected to the locking nut 21. Compared with the traditional oil unloading, the oil unloading box is easy to open the interior of the protection box 13 through the cooperation between the key and the lock core 20, and the manual unlocking function is realized. This feature is particularly important in the event of power outages or failures, and avoids the situation where the oil unloading box cannot be opened due to power failures. The manual unlocking operation is simple and does not rely on external power supply, which improves the use efficiency and reliability of the oil unloading box. Whether it is daily operation or emergency handling, this design can bring great convenience to users, ensuring that the oil unloading box can be opened smoothly at critical moments to meet various usage needs.

[0035] A fixing plate 7 is fixedly installed at the bottom of the electrostatic rack 1 , and threaded holes 8 are provided inside the fixing plate 7 , and the threaded holes 8 present four shapes of the same size.

[0036] The electrostatic rack 1 needs to be fixed before use, and the bolts are slowly screwed into the threaded holes 8 inside the dust cover 6. The dust cover 6 and the electrostatic rack 1 are fixed through the threaded holes 8, and the threaded holes 8 present four shapes of the same size. In this way, the fixation of the electrostatic rack 1 and the dust cover 6 is more stable, avoiding the phenomenon of the electrostatic rack 1 being offset during use, and improving the use efficiency of the electrostatic rack 1.

[0037] A dust-proof cover 6 is fixedly installed on the front of the electrostatic rack 1 , and the dust-proof cover 6 is in an arc shape.

[0038] Since the dustproof cover 6 is in an arc shape on the front of the electrostatic rack 1, it prevents dust from falling on the fixing plate 7, thereby ensuring the stable operation of the trigger, improving accuracy, extending service life and reducing maintenance costs.

[0039] A handrail 12 is fixedly mounted on the top of the box cover 11, and the handrail 12 is in an inverted U shape.

[0040] Since the armrest 12 is in a U-shape, and the shape of the U-shaped armrest 12 can fit the palm of a person well, the palm can tightly grasp the armrest 12, providing better support strength and holding stability, which makes it easier for the staff to hold the armrest 12 and slowly close the box cover 11.

[0041] The distance between the second blocking block 18 and the first annular groove 34 is equal to the distance between the telescopic rod 35 and the interior of the fixed tube 30 .

[0042] The distance between the blocking block 2 18 and the annular groove 1 34 is equal to the distance between the telescopic rod 35 and the inside of the fixed tube 30. This makes it easy for the blocking block 2 18 to directly enter the inside of the annular groove 1 34 when the full gear 24 is squeezed, thereby improving the unlocking efficiency of the box cover 11.

[0043] The working principle and use process of this utility model:

[0044] When the tanker truck enters the gas station, the staff needs to unload the oil inside the tanker truck into the internal oil unloading pipe of the protection box 13. Before unloading the oil, the tanker truck needs to release static electricity. The cable 9 is driven to move by holding the static clamp 5, and the static clamp 5 is clamped to a special part of the tanker truck, and then the static electricity is released. At this time, the timing trigger 2 receives the closing signal of the static clamp 5 and starts timing. There are two contacts on the inner side of the static clamp 5. After the contacts pass through the metal parts on the tanker truck, the two wires connecting the two contacts of the static clamp 5 are electrically connected to form a path, so that the timing trigger 2 starts working and timing, and the static connection time is displayed on the display screen 3. When it reaches 300 seconds, the sound and light prompter 4 reminds that the static electricity is released. The PLC inside the static rack 1 will send a signal to the motor control module, so that the motor control module controls the motor 28 to start (the PLC sends a signal to The motor control module controls the operation of the motor as is known common sense. The motor 28 drives the half gear 25 to rotate. The teeth of the half gear 25 and the full gear 24 are meshed. The half gear 25 drives the full gear 24 to rotate. The full gear 24 drives the limiting tube 23 to rotate. The limiting tube 23 drives the lock core 20 to rotate. The lock core 20 drives the lock buckle 22 to rotate. The lock buckle 22 squeezes the tension spring 27 so that the lock buckle 22 unlocks the buckle 17. Now, the cylinder 15 squeezes the support block 16 and the box cover 11 so that the box cover 11 and the buckle 17 slowly detach from the interior of the cavity 21. When the smooth surface of the full gear 24 touches the smooth surface of the teeth of the half gear 25, the lock buckle 22 drives the tension spring 27 to automatically lock the box under the extrusion force, thereby opening the interior of the protective box 13.

[0045] When the electrostatic rack 1 is powered off or fails, it is necessary to manually open the protection box 13 to unload the oil from the oil unloading tank. At this time, the oil unloading worker at the gas station inserts the key into the door lock 19 and the lock core 20, so that the key slides inside the second slide groove 33, and the full gear 24 is squeezed inside the lock core 20 by the key, and the spring 26 and the telescopic rod 35 are synchronously squeezed by the full gear 24, and the telescopic rod 35 is moved inside the fixed tube 30. When the end of one end of the key contacts the full gear 24, the full gear 24 and the limiting tube 23 are synchronously squeezed by the end of the key, and the blocking block 2 18 is driven by the limiting tube 23 to move inside the slide groove 1 29. The lock core 20 and the limit tube 23 are respectively driven by the key and the locking member 22. The lock core 20 and the limit tube 23 are respectively driven by the key and the locking member 22 are respectively driven by the key and the locking member 22 are respectively driven by the lock core 20 and the limit tube 23 are respectively driven by the key and the locking member 22 are respectively driven by the lock core 20 and the limit tube 23 are respectively driven by the key and the lock core 20 and the limit tube 23 are respectively driven by the key and the lock core 20 and the limit tube 23 are respectively driven by the key and the limit tube 23 are respectively driven by the lock core 20 ...

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A system for automatically opening and unloading a tank tank by electrostatic discharge of a tank truck at a gas station, comprising an electrostatic rack (1), an electrostatic clamp (5) and a protection box (13), characterized in that: A timing trigger (2) is fixedly installed on the front of the electrostatic rack (1), and a display screen (3) is arranged on the front of the timing trigger (2); one end of a cable (9) is fixedly connected to the right of the timing trigger (2), and the other end of the cable (9) is fixedly connected to the electrostatic clamp (5); and an audible and visual prompter (4) is fixedly installed on the top of the timing trigger (2); A connecting line (10) is connected between the left side surface of the protection box (13) and the bottom end of the timing trigger (2); a box cover (11) is hingedly connected to the top of the protection box (13); support blocks (16) are rotatably mounted on both sides of the inner wall of the protection box (13); a cylinder (15) is fixedly mounted on the top of the support block (16); and an output end of the cylinder (15) is hingedly connected to the inner side surface of the box cover (11); and a buckle (17) is fixedly mounted on the bottom end of the box cover (11); The inner side of the protection box (13) is provided with a cavity (21), a motor (28) is fixedly installed inside the cavity (21), a half gear (25) is fixedly installed at the output end of the motor (28), a rotating rod (31) is fixedly installed inside the cavity (21), a fixed tube (30) is fixedly installed on the front side of the rotating rod (31), a telescopic rod (35) is movably sleeved inside the fixed tube (30), the front side of the telescopic rod (35) passes through the fixed tube (30) and is fixedly installed with a full gear (24), and the full gear (24) and the half gear (25) are meshed with each other, and the full gear (24) is meshed with each other. A limiting tube (23) is fixedly installed on the front side of the wheel (24), and a lock core (20) is movably sleeved inside the limiting tube (23). A sliding groove (29) and an annular groove (34) are provided on the outer surface of the lock core (20), and a blocking block (18) located inside the sliding groove (29) is fixedly installed on the inner side surface of the limiting tube (23). A lock buckle (22) is fixedly installed on the outer surface of the lock core (20), and a tension spring (27) is fixedly installed between the bottom end of the lock buckle (22) and the bottom surface of the cavity (21), and a spring (26) is fixedly installed between the back side of the full gear (24) and the front side of the fixed tube (30).

2. The gas station tank truck static discharge automatic safety opening and unloading tank system according to claim 1 is characterized by: A door lock (19) is fixedly installed on the front of the lock core (20), a second annular groove (14) and a second sliding groove (33) are provided inside the lock core (20), and a blocking block (32) is fixedly installed inside the second annular groove (14).

3. The gas station tank truck electrostatic discharge automatic safety opening and unloading tank system according to claim 1 is characterized by: A fixing plate (7) is fixedly mounted on the bottom of the electrostatic rack (1), and threaded holes (8) are provided inside the fixing plate (7), and the threaded holes (8) present four shapes of the same size.

4. The gas station tank truck electrostatic discharge automatic safety opening and unloading tank system according to claim 1 is characterized by: A dust-proof cover (6) is fixedly mounted on the front of the electrostatic rack (1), and the dust-proof cover (6) is in an arc shape.

5. The system for automatically opening and unloading the tank of a tank truck at a gas station by electrostatic discharge according to claim 1 is characterized in that: A handrail (12) is fixedly mounted on the top of the box cover (11), and the handrail (12) is in an inverted U shape.

6. The gas station tank truck static discharge automatic safety opening and unloading tank system according to claim 1 is characterized by: The distance between the second blocking block (18) and the first annular groove (34) is equal to the distance between the telescopic rod (35) and the interior of the fixed tube (30).

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