A turning and limiting vent pipe connecting device for gas station tank

Abstract

The application discloses a kind of oil depot with reversible limiting ventilation pipe connecting device, including movable assembly, the movable assembly includes fixed cylinder body and movable cylinder body, the inside of movable cylinder body is inserted with dryer, movable cylinder body is moved in the side of fixed cylinder body by sealing slip ring, fixed cylinder body below is connected with inlet pipe, movable cylinder body top is connected with outlet pipe;Blocking block, the blocking block is set in movable cylinder body inner surface and has the above of convex slot part, the blocking block and movable cylinder body are mutually abutting by pressure rod assembly, the pressure rod assembly is set in fixed cylinder body top;Resist claw, the resist claw is attached in the upper side of inlet pipe, the resist claw side is connected with connecting rod by screw sleeve, the present application can realize stepless limiting type of ventilation pipe falling, and simultaneously convenient overall disassembly and provide better support security effect, so as to facilitate maintenance and daily use.

Description

Technical Field

[0001] This invention relates to the field of ventilation pipeline equipment technology, and in particular to a steerable and limitable ventilation pipeline connection device for gas station depots. Background Technology

[0002] Venting pipes, as a type of pipeline that provides a path for gas flow, are very common in various industrial and infrastructure fields. An important accessory for gas station tanks is the venting pipe and the flame arrester or pressure / vacuum valve (PV valve) with flame arrestor function above the venting pipe. The PV valve is generally suitable for tank accessories with oil and gas recovery devices. According to the relevant requirements of gas station management regulations and oil depot design specifications, these devices need to be cleaned and inspected regularly, generally every six months to one year. In addition, the height of the venting pipe should be 4 meters higher than the ground around the tank area to ensure safety.

[0003] According to the relevant specifications mentioned above, during the actual cleaning and inspection process, the PV valve may be installed at an excessively high height, making disassembly difficult. The current solution is usually to directly disassemble the vent pipe or to perform work at height after obtaining approval. Both methods are time-consuming and labor-intensive, seriously affecting maintenance efficiency. There is a technology that allows the vent pipe to be rotated in the middle to lower the PV valve above it. However, in actual operation, due to the heavy weight of the vent pipe and PV valve above the connection end, they may fall directly during the descent, damaging the vent pipe and valve body. Furthermore, this structure of the vent pipe will seriously affect the overall connection strength of the vent pipe and make disassembly difficult. In windy or rainy weather, it may cause the vent pipe to tip over.

[0004] Therefore, how to provide a steerable and limitable vent pipe connection device for gas station depots is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] One objective of this invention is to provide a steerable and limitable vent pipe connection device for gas station depots. This invention can effectively provide stepless limit function for the vent pipe during the descent process while ensuring connection strength, and is easy to disassemble to ensure the replacement and maintenance of internal drying equipment and other equipment.

[0006] According to an embodiment of the present invention, a steerable and limitable vent pipe connection device for a gas station depot includes a movable component. The movable component includes a fixed cylinder and a movable cylinder. A dryer is inserted inside the movable cylinder. The movable cylinder moves to one side of the fixed cylinder via a sealing slip ring. An air inlet pipe is connected below the fixed cylinder, and an air outlet pipe is connected above the movable cylinder.

[0007] A stop block is provided above the grooved portion on the inner surface of the movable cylinder. The stop block and the movable cylinder are pressed together by a pressure rod assembly, which is located above the fixed cylinder.

[0008] The abutment claw is attached to the upper side of the intake pipe. One side of the abutment claw is connected to the connecting rod by a threaded sleeve. The upper part of the connecting rod is fixed to the top of the movable cylinder.

[0009] Furthermore, an adjustment mechanism is provided on the inner side of the fixed cylinder body. The adjustment mechanism includes a stop block, a pressure rod assembly, and a lever assembly. One side of the stop block is connected to the pressure rod assembly via a drive frame, and the lever assembly drives the movable cylinder body to rotate on one side of the fixed cylinder body.

[0010] Furthermore, the pressure rod assembly includes a central pressure rod and a handheld lifting rod. The top of the central pressure rod slides inside a movable groove via a pivot pin. The movable groove is located on one side of the handheld lifting rod, and the handheld lifting rod moves inside a swing groove via a pin hole located in the middle.

[0011] Furthermore, the swing groove is formed on the surface of the hand lever, and the hand lifting rod is located below the hand lever. The lower part of the axial pressure rod is connected to the top of the drive frame through a rotating shaft.

[0012] Furthermore, the lever assembly includes an annular toothed groove and a hand lever. The hand lever is positioned above the fixed cylinder body, and a movable sleeve that is rotatably connected to the fixed cylinder body is fixed on one side of the hand lever. The movable sleeve is movably positioned on the outer surface of the axial pressure rod, and the hand lever drives the movable cylinder body to rotate on one side of the fixed cylinder body.

[0013] Furthermore, a transmission tooth is fixed below the movable sleeve, and one side of the transmission tooth engages with an annular tooth groove, which is formed on one side of the movable cylinder.

[0014] Furthermore, the lever assembly also includes two sets of opposing first wedge-shaped convex rings and second wedge-shaped convex rings. Both sets of first wedge-shaped convex rings and second wedge-shaped convex rings are disposed between the fixed cylinder and the movable cylinder. The distribution angle between the first wedge-shaped convex rings and the second wedge-shaped convex rings is 90 degrees. The first wedge-shaped convex rings are fixedly disposed on the outer surface of the movable cylinder, and the second wedge-shaped convex rings are fixedly disposed on the inner surface of the fixed cylinder. The first wedge-shaped convex rings and the second wedge-shaped convex rings are located in the same vertical direction.

[0015] Furthermore, the bottom of the drive frame is fixedly connected to a hook-shaped rod via a stabilizing slide rod, and a support seat is fixed on the inner side of the fixed cylinder near the stabilizing slide rod. The stabilizing slide rod is elastically connected to the support seat above it via a pressure spring sleeved on its surface, and the stabilizing slide rod slides through the upper and lower sides of the support seat.

[0016] Furthermore, a safety mechanism is provided below the movable cylinder body. The safety mechanism includes a connecting rod and an abutment claw. One side of the abutment claw is movably connected to a screw rod via a pivot pin. The screw rod is threadedly connected to a screw sleeve. The screw sleeve is fixed to the bottom of the connecting rod. A sealing gasket is provided near the abutment claw on the air intake pipe.

[0017] Furthermore, a fixing pin is fixedly connected to the side of the abutment claw near the air intake pipe, and an opening is provided in the air intake pipe near the fixing pin. The fixing pin is engaged with the hook-shaped rod.

[0018] The beneficial effects of this invention are:

[0019] This invention provides a blocking block located inside the fixed cylinder near the inner surface of the movable cylinder. Under normal circumstances, the blocking block is pressed tightly against the movable cylinder by the elastic pressure of the pressure spring below the drive frame, thus providing a blocking effect. This blocking effect is controlled by the pressure rod assembly to achieve tightness or looseness, thereby limiting the movable cylinder by releasing the hand-held lifting rod at different positions and preventing the movable cylinder from tipping over during the flipping process.

[0020] This invention achieves meshing transmission by directly setting a lever assembly above the fixed cylinder body. The transmission teeth are driven to rotate by the hand lever, thereby driving the annular tooth groove to rotate. This allows the movable cylinder body to rotate on one side of the fixed cylinder body, thus realizing the flipping function. This makes it convenient to lay down the vent cap or valve body above the air outlet pipe for maintenance.

[0021] This invention features a stabilizing slide bar located below the drive frame. A hook-shaped rod connected below the stabilizing slide bar, under normal conditions, experiences an upward thrust under the elastic pressure of a pressure spring. The hook-shaped rod directly connects to a fixing pin, thus limiting and fixing the fixing pin inside the intake pipe. This allows the abutment claw to tightly adhere to the outer surface of the intake pipe, achieving a fixing effect. One side of the abutment claw is connected to a connecting rod via a threaded sleeve and a screw, providing a stable direct connection between the intake and exhaust pipes. During normal use, this effectively prevents the exhaust pipe from being subjected to force that could cause the movable cylinder to separate from the fixed cylinder.

[0022] This invention utilizes a first wedge-shaped convex ring and a second wedge-shaped convex ring, respectively fixed above the movable cylinder and the fixed cylinder. The first and second wedge-shaped convex rings are positioned at a 90-degree angle to each other. When the movable cylinder rotates 90 degrees, the first and second wedge-shaped convex rings can be relatively close together. In this state, continued rotation of the movable cylinder will cause the movable cylinder and the fixed cylinder to initially separate due to the contact effect between the first and second wedge-shaped convex rings. This facilitates the operator's disassembly of the movable cylinder and maintenance of its internal structure. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the front end of the overall structure of a steerable and limiting vent pipe connection device for gas station depots proposed in this invention.

[0025] Figure 2 This is a schematic diagram showing the overall structure of a steerable and limiting vent pipe connection device for gas station depots proposed in this invention.

[0026] Figure 3 This is a schematic diagram showing the internal structure of the movable component of a steerable and limitable vent pipe connection device for gas station depots proposed in this invention.

[0027] Figure 4 This is a half-sectional schematic diagram of the internal structure of the movable component of a steerable and limitable vent pipe connection device for gas station depots proposed in this invention.

[0028] Figure 5 This is a schematic diagram of the movable cylinder structure of a steerable and limitable vent pipe connection device for gas station depots proposed in this invention.

[0029] Figure 6 This is a partial positional breakdown diagram of the adjusting mechanism of a steerable and limitable vent pipe connection device for gas station depots proposed in this invention.

[0030] Figure 7 This is a schematic diagram showing the disassembled connection position of the stop block in a steerable and limiting vent pipe connection device for gas station depots, as proposed in this invention.

[0031] Figure 8 This is a partial cross-sectional view of the movable component of a steerable and limitable vent pipe connection device for gas station depots proposed in this invention.

[0032] Figure 9 This invention proposes a steerable and limiting vent pipe connection device for gas station depots. Figure 4 Enlarged view of the structure at point A.

[0033] Figure 10 This invention proposes a steerable and limiting vent pipe connection device for gas station depots. Figure 4 Enlarged view of the structure at point B.

[0034] In the diagram: 1. Moving component; 2. Inlet pipe; 3. Outlet pipe; 4. Dryer; 5. Adjustment mechanism; 6. Safety mechanism;

[0035] 11. Fixed cylinder body; 12. Movable cylinder body; 51. Drive frame; 52. Stop block; 53. Pressure rod assembly; 54. Toggle rod assembly; 55. Stabilizing slide rod; 56. Support seat; 57. Pressure spring; 61. Connecting rod; 62. Screw sleeve; 63. Screw; 64. Abutment claw; 65. Fixing pin; 66. Hook rod;

[0036] 531. Axial pressure rod; 532. Hand-held lifting rod; 533. Movable slide groove; 534. Swing groove; 541. Transmission gear; 542. Annular tooth groove; 543. Movable sleeve; 544. Hand-held lever; 545. First wedge-shaped convex ring; 546. Second wedge-shaped convex ring. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0038] refer to Figures 1-10 The system includes a movable component 1, which comprises a fixed cylinder 11 and a movable cylinder 12. A dryer 4 is inserted inside the movable cylinder 12. The movable cylinder 12 moves to one side of the fixed cylinder 11 via a sealing slip ring. An air inlet pipe 2 is connected to the bottom of the fixed cylinder 11, and an air outlet pipe 3 is connected to the top of the movable cylinder 12. A stop block 52 is located above the grooved portion on the inner surface of the movable cylinder 12. The stop block 52 and the movable cylinder 12 are pressed against each other by a pressure rod assembly 53, which is located above the fixed cylinder 11. An abutment claw 64 is attached to the upper side of the air inlet pipe 2. One side of the abutment claw 64 is connected to a connecting rod 61 via a threaded sleeve 62. The top of the connecting rod 61 is fixed to the top of the movable cylinder 12.

[0039] In this embodiment, the movable cylinder 12 and the fixed cylinder 11 are first connected to each other by a sealing slip ring. This can be understood as the movable cylinder 12 being inserted into the inner side of the fixed cylinder 11 on the side closer to the fixed cylinder 11. The sealing slip ring is positioned at the contact surface to ensure good movement and prevent sparks from friction. The stop block 52 is located inside the fixed cylinder 11 and is controlled by the pressure rod assembly 53 to achieve tight contact with the inner surface of the movable cylinder 12. The movable cylinder 12 is contacted by the stop block 52. Afterwards, it will experience greater resistance in the direction of rotation, thereby achieving throttling and preventing rotation between the movable cylinder 12 and the fixed cylinder 11. The abutment claw 64 is directly connected to the movable cylinder 12 through the connecting rod 61. When the abutment claw 64 is in contact with the surface of the air intake pipe 2, the rotation of the movable cylinder 12 is restricted, thereby improving stability. Furthermore, the force on the movable cylinder 12 can be directly transmitted to the air intake pipe 2 through the abutment claw 64, further improving structural stability and making it suitable for outdoor windy conditions.

[0040] refer to Figure 6 , Figure 7 and Figure 10 An adjustment mechanism 5 is provided on the inner side of the fixed cylinder 11. The adjustment mechanism 5 includes a stop block 52, a pressure rod assembly 53, and a lever assembly 54. One side of the stop block 52 is connected to the pressure rod assembly 53 via a drive frame 51. The lever assembly 54 drives the movable cylinder 12 to rotate on one side of the fixed cylinder 11. The pressure rod assembly 53 includes a axial pressure rod 531 and a hand-held lifting rod 532. The top of the axial pressure rod 531 slides inside the movable slide groove 533 via a pivot pin. The movable slide groove 533 is located on one side of the hand-held lifting rod 532. The hand-held lifting rod 532 moves inside the swing groove 534 through a pin hole located in the middle. The swing groove 534 is located on the surface of the hand-held lever 544, and one side of the hand-held lifting rod 532 is located below the hand-held lever 544. The lower part of the axial pressure rod 531 is limited and connected to the top of the drive frame 51 via a rotating shaft.

[0041] In this embodiment, the stop block 52 is directly fixed to one side of the drive frame 51, so the position of the stop block 52 is controlled by the drive frame 51. Under normal circumstances, the stop block 52 is tightly pressed against the upper wall of the inner surface of the movable cylinder 12, providing a stopping effect for the movable cylinder 12. After the hand lever 532 below the hand lever 544 is raised, the middle position of the hand lever 532 moves inside the swing groove 534, and the other side of the hand lever 532 will move downward, similar to the movement of a lever. The movable slide 533 is located at the lower position of the hand-held lifting rod 532 and is connected to the upper part of the axial pressure rod 531 by a sliding pin, thereby realizing the operation of lifting the hand-held lifting rod 532 to drive the axial pressure rod 531 to fall. The lower part of the axial pressure rod 531 is movably connected to the upper part of the drive frame 51. In this way, after the drive frame 51 is subjected to force and moves down, it can drive the blocking block 52 to separate from the inner wall of the movable cylinder 12, reducing the blocking effect of the movable cylinder 12, thereby facilitating the flipping operation between the movable cylinder 12 and the fixed cylinder 11.

[0042] refer to Figure 5 , Figure 6 , Figure 8 and Figure 10 The lever assembly 54 includes an annular toothed groove 542 and a hand lever 544. The hand lever 544 is positioned above the fixed cylinder 11. A movable sleeve 543, rotatably connected to the fixed cylinder 11, is fixed to one side of the hand lever 544. The movable sleeve 543 is movably mounted on the outer surface of the axial pressure rod 531. The hand lever 544 drives the movable cylinder 12 to rotate on one side of the fixed cylinder 11. A transmission tooth 541 is fixed below the movable sleeve 543. One side of the transmission tooth 541 engages with the annular toothed groove 542, which is located on one side of the movable cylinder 12.

[0043] In this embodiment, in addition to providing stability during the lifting of the hand-held lifting rod 532, the hand-held lever 544 can directly drive the movable sleeve 543 to rotate after rotating the hand-held lever 544. The transmission gear 541 is fixed below the movable sleeve 543. The rotation of the transmission gear 541 can mesh with the annular tooth groove 542 on the transmission side. The annular tooth groove 542 is also opened on the side of the movable cylinder 12. Thus, the rotation of the hand-held lever 544 can drive the movable cylinder 12 to rotate. The overall operation, combined with the control of the pressure rod assembly 53, achieves a stepless limit effect. This allows the movable cylinder 12 to be rotated to any position. Simply releasing the hand-held lifting rod 532 below the hand-held lever 544 can stabilize the air outlet pipe 3 at that point, thereby preventing the air outlet pipe 3 from tipping over during the falling process and effectively protecting personal and property safety.

[0044] refer to Figure 5 and Figure 8The lever assembly 54 also includes two sets of opposing first wedge-shaped protrusions 545 and second wedge-shaped protrusions 546. Both sets of first wedge-shaped protrusions 545 and second wedge-shaped protrusions 546 are disposed between the fixed cylinder 11 and the movable cylinder 12. The distribution angle between the first wedge-shaped protrusions 545 and the second wedge-shaped protrusions 546 is 90 degrees. The first wedge-shaped protrusions 545 are fixedly disposed on the outer surface of the movable cylinder 12, and the second wedge-shaped protrusions 546 are fixedly disposed on the inner surface of the fixed cylinder 11. The first wedge-shaped protrusions 545 and the second wedge-shaped protrusions 546 are located in the same vertical direction.

[0045] In this embodiment, the first wedge-shaped protruding ring 545 and the second wedge-shaped protruding ring 546 have the same shape, but are distributed in opposite directions. The first wedge-shaped protruding ring 545 is fixed to the outer surface of the movable cylinder 12, while the second wedge-shaped protruding ring 546 is fixed to the inner surface of the fixed cylinder 11. In this way, when the movable cylinder 12 is rotated to ninety degrees, the first wedge-shaped protruding ring 545 can come into contact with the second wedge-shaped protruding ring 546. When the movable cylinder 12 is rotated continuously, the movable cylinder 12 can initially separate from the fixed cylinder 11 under the contact effect of the first wedge-shaped protruding ring 545 and the second wedge-shaped protruding ring 546. This makes it easy for the operator to directly disassemble the movable cylinder 12 and perform maintenance and repair operations on the internal structure.

[0046] refer to Figure 7 and Figure 10 The bottom of the drive frame 51 is fixedly connected to the hook rod 66 via the stabilizing slide rod 55. The inner side of the fixed cylinder 11 is fixed with a support seat 56 near the stabilizing slide rod 55. The stabilizing slide rod 55 is elastically connected to the support seat 56 via a pressure spring 57 sleeved on the surface. The stabilizing slide rod 55 slides through the upper and lower sides of the support seat 56.

[0047] In this embodiment, the drive frame 51 and the stop block 52 are fixed together and can be regarded as a whole. The lower part of the drive frame 51 achieves elastic movement above the support base 56 through the stabilizing slide rod 55 and the pressure spring 57. Under normal circumstances, the drive frame 51 is subjected to the elastic effect of the pressure spring 57, which causes the stop block 52 to fit tightly against the upper side of the inner surface of the movable cylinder 12, thereby increasing the assembly power of the movable cylinder 12. When the drive frame 51 moves down, the pressure spring 57 deforms elastically, the stop block 52 separates from the movable cylinder 12, and the assembly power decreases. In addition, the stabilizing slide rod 55 can effectively stabilize the up and down movement of the drive frame 51 and prevent deviation or other problems from occurring.

[0048] refer to Figure 4 , Figure 7 and Figure 9A safety mechanism 6 is provided below the movable cylinder 12. The safety mechanism 6 includes a connecting rod 61 and an abutment pawl 64. One side of the abutment pawl 64 is movably connected to a screw 63 via a pivot pin. The screw 63 is threadedly connected to a threaded sleeve 62. The threaded sleeve 62 is fixed to the bottom of the connecting rod 61. A sealing gasket is provided near the abutment pawl 64 on the air intake pipe 2. A fixing pin 65 is fixedly connected to the side of the abutment pawl 64 near the air intake pipe 2. An opening is provided on the air intake pipe 2 near the fixing pin 65. The fixing pin 65 is engaged with a hook-shaped rod 66.

[0049] In this embodiment, the upper part of the connecting rod 61 is fixed to the upper part of the movable cylinder 12, while the lower part is directly connected to the threaded sleeve 62. The screw 63, threaded inside the threaded sleeve 62, rotates and drives the abutment 64 to move horizontally to one side until the abutment 64 contacts the outer surface of the air intake pipe 2 where the sealing gasket is located. At this point, the rotation of the movable cylinder 12 is restricted by the abutment 64, and the threaded screw 63 ensures that the abutment 64 effectively contacts the surface of the air intake pipe 2, providing a lateral... The stress is oriented so that the pressure on the movable cylinder 12 is balanced, preventing the exhaust pipe 3 from being too heavy and causing slight deformation between the movable cylinder 12 and the fixed cylinder 11. A fixing pin 65 is fixed on one side of the abutment claw 64. After the abutment claw 64 is in contact with the intake pipe 2, the fixing pin 65 can enter the interior of the intake pipe 2. At this time, the hook rod 66 can be aligned with the fixing pin 65 under the elastic action of the pressure spring 57, thereby restricting the position of the fixed abutment claw 64 and further preventing the movable cylinder 12 from moving.

[0050] Working principle: During normal operation, oil and gas enter the fixed cylinder 11 of the movable component 1 from below the intake pipe 2. After being dried by the dryer 4, they enter the outlet pipe 3 through the movable cylinder 12, achieving basic ventilation. When maintenance or other operations are required on the ventilation valve above the outlet pipe 3, first grasp the hand lever 544 in the lever assembly 54, and pull the hand lifting lever 532 in the pressure rod assembly 53 below the hand lever 544. The hand lifting lever 532, through the rotation of the swing groove 534, can drive the position of the movable slide groove 533 on one side to move downwards, while the axial pressure rod 531 moves downwards synchronously under force, realizing the adjustment mechanism 5. As the drive frame 51 descends inside the fixed cylinder 11, it compresses the pressure spring 57 and simultaneously causes the hook-shaped rod 66 in the safety mechanism 6 to separate from the fixed pin 65. At this time, rotating the screw 63 inside the screw sleeve 62 causes the threaded transmission effect to cause the contact claw 64 to separate from the outer wall of the intake pipe 2, simultaneously causing the fixed pin 65 to move outward. At this time, the limiting effect of the connecting rod 61 on the movable cylinder 12 and the fixed cylinder 11 disappears. Pulling the hand lever 532 again causes the drive frame 51 to loosen the stop block 52 from the inner wall of the movable cylinder 12, reducing the assembly force of the movable cylinder 12. At this time, rotating the hand lever 544 causes the movable cylinder 12 to move outward. The moving sleeve 543 and the transmission gear 541 rotate inside the movable cylinder 12. The annular toothed groove 542 is formed on the side of the movable cylinder 12. Thus, the movable cylinder 12 is pushed by the rotational force to rotate until the air outlet pipe 3 is no longer in a vertical state. Then, by continuously releasing the hand lever 532, the resistance between the stop block 52 and the movable cylinder 12 can be increased or decreased, thereby controlling the speed of the air outlet pipe 3 during its flipping and falling process, achieving a stepless limit effect. In the event of a slippage, the pressure spring 57 sleeved on the surface of the stabilizing slide rod 55 can provide elastic resistance above the support seat 56, making the stop block 52 tightly adhere to the movable cylinder. 12. When the movable cylinder 12 rotates to 90 degrees, the valve body above the air outlet pipe 3 can be disassembled. At this time, the hand lever 544 is continuously rotated. The movable cylinder 12 rotates under force, which can drive the first wedge-shaped protrusion 545 to abut against the second wedge-shaped protrusion 546 on the inner wall of the fixed cylinder 11 until the annular tooth groove 542 separates from the transmission tooth 541. At this time, the movable cylinder 12 and the fixed cylinder 11 are initially separated, which makes it easy for the operator to disassemble and maintain the movable cylinder 12 as a whole. The dryer 4 inserted inside the movable cylinder 12 can also be replaced by removing the cover plate on one side of the movable cylinder 12. The operation is convenient and quick.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A steerable and limiting vent pipe connection device for gas station depots, characterized in that, The device includes a movable component (1), which includes a fixed cylinder (11) and a movable cylinder (12). A dryer (4) is inserted inside the movable cylinder (12). The movable cylinder (12) moves to one side of the fixed cylinder (11) through a sealing slip ring. An air inlet pipe (2) is connected below the fixed cylinder (11), and an air outlet pipe (3) is connected above the movable cylinder (12). A stop block (52) is provided above the part with a groove on the inner surface of the movable cylinder (12). The stop block (52) and the movable cylinder (12) are pressed against each other by a pressure rod assembly (53). The pressure rod assembly (53) is provided above the fixed cylinder (11). Abutting claw (64) is attached to the upper side of the air intake pipe (2). One side of the abutting claw (64) is connected to the connecting rod (61) through a threaded sleeve (62). The upper part of the connecting rod (61) is fixed to the top of the movable cylinder (12).

2. The steerable and limiting vent pipe connection device for gas station depots according to claim 1, characterized in that, An adjustment mechanism (5) is provided on the inner side of the fixed cylinder (11). The adjustment mechanism (5) includes a stop block (52), a pressure rod assembly (53), and a lever assembly (54). One side of the stop block (52) is connected to the pressure rod assembly (53) via a drive frame (51). The lever assembly (54) drives the movable cylinder (12) to rotate on the side of the fixed cylinder (11).

3. The steerable and limiting vent pipe connection device for gas station depots according to claim 2, characterized in that, The pressure rod assembly (53) includes a central pressure rod (531) and a hand-held lifting rod (532). The top of the central pressure rod (531) slides inside the movable slide groove (533) via a pivot pin. The movable slide groove (533) is opened on one side of the hand-held lifting rod (532). The hand-held lifting rod (532) moves inside the swing groove (534) through a pin hole opened in the middle position.

4. A steerable and limiting vent pipe connection device for gas station depots according to claim 3, characterized in that, The swing groove (534) is formed on the surface of the hand lever (544), and the hand lifting rod (532) is located below the hand lever (544). The lower part of the axial pressure rod (531) is connected to the top of the drive frame (51) by a rotating shaft.

5. A steerable and limiting vent pipe connection device for gas station depots according to claim 2, characterized in that, The lever assembly (54) includes an annular toothed groove (542) and a hand lever (544). The hand lever (544) is disposed above the fixed cylinder (11). A movable sleeve (543) that is rotatably connected to the fixed cylinder (11) is fixed on one side of the hand lever (544). The movable sleeve (543) is movably disposed on the outer surface of the axial pressure rod (531). The hand lever (544) drives the movable cylinder (12) to rotate on one side of the fixed cylinder (11).

6. A steerable and limiting vent pipe connection device for gas station depots according to claim 5, characterized in that, The lower part of the movable sleeve (543) has a fixed transmission tooth (541), one side of which engages with an annular tooth groove (542), which is located on one side of the movable cylinder (12).

7. A steerable and limiting vent pipe connection device for gas station depots according to claim 5, characterized in that, The lever assembly (54) further includes two sets of opposing first wedge-shaped protrusions (545) and second wedge-shaped protrusions (546). Both sets of first wedge-shaped protrusions (545) and second wedge-shaped protrusions (546) are disposed between the fixed cylinder (11) and the movable cylinder (12). The distribution angle between the first wedge-shaped protrusions (545) and the second wedge-shaped protrusions (546) is 90 degrees. The first wedge-shaped protrusion (545) is fixedly disposed on the outer surface of the movable cylinder (12), and the second wedge-shaped protrusion (546) is fixedly disposed on the inner surface of the fixed cylinder (11). The first wedge-shaped protrusions (545) and the second wedge-shaped protrusions (546) are located in the same vertical direction.

8. A steerable and limiting vent pipe connection device for gas station depots according to claim 2, characterized in that, The bottom of the drive frame (51) is fixedly connected to the hook rod (66) by the stabilizing slide rod (55). The inner side of the fixed cylinder (11) is fixed with a support seat (56) near the stabilizing slide rod (55). The stabilizing slide rod (55) is elastically connected to the support seat (56) above by a pressure spring (57) sleeved on the surface. The stabilizing slide rod (55) slides through the upper and lower sides of the support seat (56).

9. A steerable and limiting vent pipe connection device for gas station depots according to claim 1, characterized in that, A safety mechanism (6) is provided below the movable cylinder (12). The safety mechanism (6) includes a connecting rod (61) and an abutment claw (64). One side of the abutment claw (64) is movably connected to a screw (63) via a pivot pin. The screw (63) is threadedly connected to a screw sleeve (62). The screw sleeve (62) is fixed to the bottom of the connecting rod (61). A sealing gasket is provided near the abutment claw (64) on the air intake pipe (2).

10. A steerable and limiting vent pipe connection device for a gas station depot according to claim 9, characterized in that, The abutment claw (64) is fixedly connected to a fixing pin (65) on the side near the air intake pipe (2). The air intake pipe (2) has an opening near the fixing pin (65). The fixing pin (65) is engaged with the hook rod (66).

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