Automatic liquefied gas unloading device
By designing an automatic liquefied gas unloading device with a rotating column and meshing gear structure, the problem of difficult adjustment of the vertical pipe was solved, enabling flexible loading and unloading operations and environmental protection, and improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOCHEM HONGRUN PETROCHEMICAL CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-06-26
AI Technical Summary
The vertical pipe of the existing automatic liquefied gas unloading device is difficult to rotate and adjust according to the position of the liquefied gas tank truck, making it difficult for the unloading device to adapt to tank trucks or storage tanks at different positions and angles.
An automatic liquefied gas unloading device was designed, comprising a column, a conveying pipe, a rotary joint, an inner arm, an outer arm, a balancer, and a vertical pipe. The column is driven to rotate by a forward and reverse motor. Combined with the meshing structure of a small gear and a large gear, the vertical pipe can be flexibly rotated and adjusted. A receiving box is also provided to prevent liquid from dripping.
It enables accurate docking of vertical pipes with tank trucks or storage tanks, simplifies loading and unloading operations, improves operational efficiency, maximizes the use of site resources, and avoids interference from loading arms and environmental pollution.
Smart Images
Figure CN224414895U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of unloading devices, specifically an automatic unloading device for liquefied gas. Background Technology
[0002] Liquefied petroleum gas (LPG) is a secondary energy source obtained by pressurizing and cooling natural gas or petroleum. It is a colorless volatile liquid at room temperature, and its main components include hydrocarbons such as propane, butane, propylene, and butene. Automated LPG unloading devices are efficient and safe equipment that are widely used in the unloading operations of LPG tank trucks.
[0003] In existing technologies, automatic liquefied petroleum gas (LPG) unloading devices typically utilize equipment such as compressors or cryogenic pipeline pumps to automatically unload LPG from tank trucks into storage tanks or other storage facilities via loading arms through pressure differentials or pumping action. Loading arms are telescopic pipes primarily used to connect storage tanks and tank trucks, facilitating the transfer of liquid media. In LPG loading and unloading operations, loading arms can safely and efficiently fill LPG from tank trucks into storage tanks, or unload LPG from storage tanks into tank trucks. The LPG tank truck's unloading port is usually located at the top of the tank. Loading and unloading operations can be performed on the vertical pipe on the loading arm. However, during use, the position of the loading arm's uprights is usually fixed, making it difficult to rotate and adjust the vertical pipe according to the position of the LPG tank truck. This results in the unloading device's loading arm being unable to adapt to tank trucks or storage tanks at different positions and angles. Utility Model Content
[0004] The purpose of this invention is to provide an automatic liquefied gas unloading device to solve the problem mentioned in the background art that the vertical pipe of the unloading device on the market is difficult to rotate and adjust according to the position of the liquefied gas tanker.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic liquefied gas unloading device, comprising: a column, a conveying pipe, a rotary joint, an inner arm, an outer arm, a balancer, and a vertical pipe. The conveying pipe is installed on the outer side of the column, and a rotary joint is connected to the top of the conveying pipe. The inner arm is connected to the top of the rotary joint, and the outer arm is connected to the end of the inner arm via the rotary joint. A balancer is installed on the outer side of the outer arm, and the vertical pipe is connected to the end of the outer arm via the rotary joint. A fixed box is installed at the bottom of the column via a bearing, and an installation plate is connected to the outer bottom of the fixed box. A maintenance door is connected to the outer side of the fixed box via a hinge. A guide groove is provided inside the fixed box. A rotating disk is welded to the outer side of the column near the guide groove, and a large gear is welded to the outer side of the column near the rotating disk. A forward and reverse motor is installed inside the fixed box, and a rotating shaft is connected to the output end of the forward and reverse motor. A small gear is welded to the outer side of the rotating shaft. A baffle is connected to the outer side of the column near the fixed box.
[0006] Preferably, the rotating disk and the fixed box form a rotating structure through a guide groove.
[0007] Preferably, the pinion and the gear are meshing.
[0008] Preferably, a connecting disc is connected to the outer side of the vertical tube, and a connecting block is connected to the surface of the connecting disc.
[0009] Preferably, a cross slider is slidably connected inside the connecting block, and a compression spring is connected between the cross slider and the connecting block.
[0010] Preferably, the connecting block and the connecting disc are rotatably connected by a rotating rod, and the top of the rotating rod is connected to a connecting cylinder.
[0011] Preferably, the rotating rod has a slot inside, and a receiving box is connected to the outer side of the bottom end of the rotating rod near the vertical tube.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. The rotating column allows the vertical pipe to adapt to tank trucks or storage tanks at different positions and angles, ensuring accurate docking between the vertical pipe and the tank truck or storage tank. This flexibility not only simplifies the loading and unloading process but also improves operational efficiency. The rotating design of the column can maximize the use of site resources. By rotating the column, operators can adjust the position and layout of the unloading arm according to actual needs, thereby avoiding mutual interference between arms or occupying unnecessary space.
[0014] 2. When the bottom end of the vertical pipe is about to be removed from the top position of the interface between the tank truck or storage tank, move the receiving box below the bottom end of the vertical pipe. The receiving box can prevent the liquefied gas inside the vertical pipe from dripping onto the ground, thereby protecting the working environment and reducing environmental pollution. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0016] Figure 2 This is a three-dimensional sectional view of the fixing box of this utility model;
[0017] Figure 3 This is a three-dimensional structural diagram of the receiving box of this utility model;
[0018] Figure 4 This is a three-dimensional cross-sectional view of the connecting block of this utility model.
[0019] In the diagram: 1. Column; 2. Conveying pipe; 3. Rotary joint; 4. Inner arm; 5. Outer arm; 6. Balancer; 7. Vertical pipe; 8. Fixing box; 9. Mounting plate; 10. Inspection door panel; 11. Guide groove; 12. Rotary disc; 13. Large gear; 14. Forward and reverse motor; 15. Rotating shaft; 16. Small gear; 17. Baffle; 18. Connecting disc; 19. Connecting block; 20. Cross slider; 21. Compression spring; 22. Rotating rod; 23. Connecting cylinder; 24. Slot; 25. Receiving box. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1 and Figure 2 It is understood that this utility model provides a technical solution: an automatic unloading device for liquefied gas, including: a column 1, a conveying pipe 2, a rotary joint 3, an inner arm 4, an outer arm 5, a balancer 6, and a vertical pipe 7. The conveying pipe 2 is installed on the outer side of the column 1. The top of the conveying pipe 2 is connected to the rotary joint 3. The top of the rotary joint 3 is connected to the inner arm 4. The end of the inner arm 4 is connected to the outer arm 5 through the rotary joint 3. The balancer 6 is installed on the outer side of the outer arm 5. The end of the outer arm 5 is connected to the vertical pipe 7 through the rotary joint 3. The bottom end of the column 1 is equipped with a fixed box 8 through a bearing. The bottom outer side of the fixed box 8 is connected to a mounting plate 9. The outer side of the fixed box 8 is connected to a maintenance door panel 10 through a hinge.
[0022] The automatic liquefied gas unloading device can fix the fixed box 8 to the ground via the mounting plate 9.
[0023] exist Figure 1 and Figure 2 In the middle: the inside of the fixed box 8 is provided with a guide groove 11, the outside of the column 1 near the guide groove 11 is welded with a rotating disk 12, the outside of the column 1 near the rotating disk 12 is welded with a large gear 13, the inside of the fixed box 8 is equipped with a forward and reverse motor 14, the output end of the forward and reverse motor 14 is connected to a rotating shaft 15, the outside of the rotating shaft 15 is welded with a small gear 16, and the outside of the column 1 near the fixed box 8 is connected with a baffle 17.
[0024] The automatic liquefied gas unloading device can drive the column 1 to rotate through the pinion 16 and the gear 13, thereby adjusting the position of the vertical pipe 7.
[0025] exist Figure 2In the middle: the rotating disk 12 and the fixed box 8 form a rotating structure through the guide groove 11, and the small gear 16 and the large gear 13 are meshing structures.
[0026] The rotating disc 12 of this automatic liquefied gas unloading device can improve the stability of the rotation of the column 1.
[0027] In practical implementation, the automatic LPG unloading device plays a crucial role in the unloading operation of LPG tank trucks. The traditional fixed position of the column 1 makes it difficult to align the vertical pipe 7 with LPG tank trucks in different locations. When the unloading port of the LPG tank truck is at the opposite position of the vertical pipe 7 from the column 1, the forward and reverse motors 14 can be activated. When the forward and reverse motors 14 reverse, they drive the rotating shaft 15 to rotate. The rotation of the rotating shaft 15 drives the small gear 16 to rotate, and the rotation of the small gear 16 meshes with and drives the large gear 13. When the large gear 13 rotates, it can drive the column 1 to rotate. When the column 1 rotates, it can drive the rotating disk 12 to rotate through the guide groove 11. When the column 1 rotates, it can drive the vertical pipe 7 to rotate and move. When the column 1 rotates to 180°, the vertical pipe 7 can be moved to the unloading port of the liquefied gas tanker. At this time, loading and unloading operations can be carried out through the vertical pipe 7. The baffle 17 on the column 1 can effectively prevent rainwater from entering the fixed box 8. The fixed box 8 can be fixed in the designated position by the mounting plate 9, so that the fixed box 8 is placed more stably.
[0028] See Figure 1 and Figure 2 It is known that the inspection door 10 allows for quick inspection and maintenance of the interior of the fixed box 8. The rotating column 1 allows the vertical pipe 7 to adapt to tank trucks or storage tanks at different positions and angles, ensuring accurate docking of the vertical pipe 7 with the tank truck or storage tank. This flexibility not only simplifies the loading and unloading process but also improves operational efficiency. The rotating design of the column 1 maximizes the use of site resources. By rotating the column 1, operators can adjust the position and layout of the unloading arm according to actual needs, thereby avoiding mutual interference between the arms or occupying unnecessary space.
[0029] exist Figure 1 , Figure 3 and Figure 4 In the middle: A connecting plate 18 is connected to the outside of the vertical tube 7, a connecting block 19 is connected to the surface of the connecting plate 18, a cross slider 20 is slidably connected inside the connecting block 19, and a compression spring 21 is connected between the cross slider 20 and the connecting block 19.
[0030] The automatic liquefied gas unloading device uses a compression spring 21 to retract and reset the cross slider 20, thereby fixing the rotating rod 22.
[0031] exist Figure 1, Figure 3 and Figure 4 In the middle: the connecting block 19 and the connecting plate 18 are rotatably connected to a rotating rod 22. The top of the rotating rod 22 is connected to a connecting cylinder 23. The rotating rod 22 has a slot 24 inside. The bottom of the rotating rod 22 near the vertical tube 7 is connected to a receiving box 25.
[0032] The automatic liquefied gas unloading device can prevent dripping through the receiving box 25, and the receiving box 25 can be rotated by the rotating rod 22, so as not to affect the use of the vertical pipe 7.
[0033] In practical implementation, the automatic LPG unloading device allows for multi-angle adjustment of the inner arm 4, outer arm 5, and vertical pipe 7 via multiple sets of rotary joints 3. After the LPG loading and unloading is completed, residual LPG liquid may remain inside the vertical pipe 7, causing LPG dripping when the bottom of the vertical pipe 7 is removed from the tank truck or storage tank. This not only causes land pollution but may also form toxic and harmful gases after the dripping oil evaporates, causing secondary pollution to the environment. When the bottom of the vertical pipe 7 is about to be removed from the top position of the interface between the tank truck and the storage tank, the cross slider 20 can be moved away from the rotating rod 22. When the cross slider 20 is pulled in a certain direction, it can compress the compression spring 21. When the end of the cross slider 20 slides out from the inside of a set of slots 24, it can push the connecting cylinder 23 towards the connecting block 19. When the connecting cylinder 23 moves, it can drive the rotating rod 22 and the receiving box 25 to move. When the bottom of the connecting cylinder 23 falls into the inside of the connecting block 19, the receiving box 25 can descend to a position close to the bottom of the vertical tube 7, and the connecting cylinder 23 can be rotated. When the connecting cylinder 23 rotates, it can drive the rotating rod 22 and the receiving box 25 to rotate.
[0034] See Figure 1 , Figure 3 and Figure 4 It can be seen that when the receiving box 25 rotates to the position below the bottom of the vertical tube 7, the cross slider 20 can be released. At this time, the cross slider 20 can be reset by the compression spring 21 and inserted into another set of slots 24, so that the position of the rotating rod 22 is not easy to rotate. The receiving box 25 can prevent the liquefied gas liquid inside the vertical tube 7 from dripping onto the ground, thereby protecting the working environment and reducing environmental pollution.
[0035] In summary, when using this automatic LPG unloading device, the reversing motor 14 drives the rotating shaft 15 to rotate when it reverses. The rotating shaft 15 then drives the pinion 16 to rotate, which in turn meshes with and drives the large gear 13 to rotate. The large gear 13 then drives the column 1 to rotate. The rotating column 1 allows the vertical pipe 7 to adapt to tank trucks or storage tanks at different positions and angles, ensuring accurate docking between the vertical pipe 7 and the tank truck or storage tank. This flexibility not only simplifies the loading and unloading process but also improves operational efficiency. The rotating design of the column 1 maximizes the use of available space. By rotating the column 1, operators can adjust the position and layout of the unloading arm according to actual needs, thus avoiding mutual interference between arms or unnecessary space occupation. The receiving box 25 prevents the LPG inside the vertical pipe 7 from dripping onto the ground, thereby protecting the working environment and reducing environmental pollution. Content not described in detail in this specification belongs to prior art known to those skilled in the art.
[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An automatic liquid gas unloading device, comprising: The column (1), conveying pipe (2), rotary joint (3), inner arm (4), outer arm (5), balancer (6), and vertical pipe (7) are characterized in that: A conveying pipe (2) is installed on the outside of the column (1). A rotary joint (3) is connected to the top of the conveying pipe (2). An inner arm (4) is connected to the top of the rotary joint (3). An outer arm (5) is connected to the end of the inner arm (4) through the rotary joint (3). A balancer (6) is installed on the outside of the outer arm (5). A vertical pipe (7) is connected to the end of the outer arm (5) through the rotary joint (3). The bottom end of the column (1) is fitted with a fixed box (8) via a bearing. The bottom outer side of the fixed box (8) is connected to an installation plate (9). The outer side of the fixed box (8) is connected to an inspection door panel (10) via a hinge. The inside of the fixed box (8) is provided with a guide groove (11). The outer side of the column (1) near the guide groove (11) is welded with a rotating disk (12). The outer side of the column (1) near the rotating disk (12) is welded with a large gear (13). The inside of the fixed box (8) is equipped with a forward and reverse motor (14). The output end of the forward and reverse motor (14) is connected to a rotating shaft (15). The outer side of the rotating shaft (15) is welded with a small gear (16). The outer side of the column (1) near the fixed box (8) is connected with a baffle (17).
2. The automatic liquefied gas unloading device according to claim 1, characterized in that: The rotating disk (12) and the fixed box (8) form a rotating structure through the guide groove (11).
3. The automatic unloading device for liquefied gas according to claim 1, characterized in that: The small gear (16) and the large gear (13) are meshed.
4. The automatic unloading device for liquefied gas according to claim 1, characterized in that: A connecting plate (18) is connected to the outside of the vertical tube (7), and a connecting block (19) is connected to the surface of the connecting plate (18).
5. The automatic unloading device for liquefied gas according to claim 4, characterized in that: The connecting block (19) is internally slidably connected to a cross slider (20), and a compression spring (21) is connected between the cross slider (20) and the connecting block (19).
6. The automatic unloading device for liquefied gas according to claim 5, characterized in that: The connecting block (19) and the connecting plate (18) are rotatably connected by a rotating rod (22), and the top of the rotating rod (22) is connected to a connecting cylinder (23).
7. The automatic unloading device for liquefied gas according to claim 6, characterized in that: The rotating rod (22) has a slot (24) inside, and a receiving box (25) is connected to the outer side of the bottom end of the rotating rod (22) near the vertical tube (7).