Universal compensation sealing device capable of automatically collecting residual liquid

Abstract

The universal compensation sealing device capable of automatically collecting the residual liquid comprises a sealing mechanism and a residual liquid collecting mechanism, the sealing mechanism comprises an upper connecting plate and a lower connecting plate, a connecting rod and a corrugated pipe are arranged between the upper connecting plate and the lower connecting plate, the bottom of the lower connecting plate is fixedly connected with a guide pipe, and the bottom of the guide pipe is fixedly connected with the sealing mechanism. The residual liquid collecting mechanism comprises an air cylinder and a guide rod, the air cylinder is installed on the vertical pipe through an air cylinder fixing support, a piston rod of the air cylinder is connected with a rotating mechanism, the rotating mechanism can enable the liquid receiving hopper to rotate horizontally, and the ball cap can rotate flexibly at multiple angles. The air cylinder drives the upper lifting rod to ascend and descend, and the lower lifting rod rotates and ascends under the action of the rotating mechanism, so that the liquid receiving hopper is driven to rotate horizontally, and automatic liquid receiving of the liquid receiving hopper is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of full-automatic lifting pipes, in particular to a universal compensating sealing device for self-collecting residual liquid. Background Art

[0002] The crane pipe is a device that is connected in series with a rotating joint that is flexible and has good sealing performance and a pipeline. It is used to transport liquid media. The media that can be transported include diesel, lubricating oil, gasoline, etc. It can also transport liquefied natural gas, liquefied petroleum gas, molten sulfur, asphalt, carbon disulfide and other chemical products. For dangerous chemicals, the use of the crane pipe improves the safety of loading and unloading operations.

[0003] When loading crane pipes, in order to prevent oil and gas leakage, various forms of sealing devices are usually installed at the lower end of the vertical pipe, such as external cylinder compression, inflated reverse tank mouth, installation of PTFE spherical caps or spherical caps with elastic rubber seals that fit tightly with the tank mouth. However, the liquid at the tank mouth flowing through the crane pipe will cause vibration, and the height of the vehicle will sink after the liquid is loaded, the height of the tank mouth will become lower, the tank mouth and the cone barrel cannot fit tightly or the compression force is uneven, the sealing effect is poor, and the gap changes greatly, which can easily cause oil and gas leakage when filling the crane pipe. In addition, after the crane pipe is loaded, corrosive residual liquid will drip from the inner arm of the vertical pipe, causing environmental pollution and waste of resources, and endangering the health of personnel. Utility Model Content

[0004] The problem to be solved by the utility model is the deficiency in the prior art. A universal compensating sealing device for self-collecting residual liquid is provided to solve the problem that during the loading process of the crane pipe, the tank mouth and the crane pipe are not tightly fitted, and the vertical pipe drips residual liquid, which damages the environment and endangers the health of personnel.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is to provide a universal compensation sealing device for self-collecting residual liquid, which is arranged on the vertical pipe and includes a sealing mechanism and a residual liquid collecting mechanism. The sealing mechanism includes an upper connecting plate slidably connected to the vertical pipe, a bellows is fixedly connected to the center of the bottom of the upper connecting plate, and a lower connecting plate is fixedly connected to the bottom of the bellows. A connecting rod is arranged between the upper connecting plate and the lower connecting plate, one end of the connecting rod is slidably connected to the upper connecting plate through a rod seat, and the other end is fixedly connected to a universal bearing, and the universal bearing is fixedly connected to the top of the lower connecting plate. A spring is sleeved on the outer side of the connecting rod, and a guide tube is fixedly connected to the bottom of the lower connecting plate, and a spherical cap is fixedly connected to the other end of the guide tube, and the outer diameter of the spherical cap gradually increases from bottom to top; the residual liquid collecting mechanism includes a cylinder and a guide rod, and the cylinder is installed on the vertical pipe through a cylinder fixing bracket, and the other end of the cylinder piston rod is rotatably connected to a lower lifting rod through a rotating mechanism, and the other end of the lower lifting rod is fixedly connected to a horizontally arranged liquid receiving rod, and the other end of the liquid receiving rod is fixedly connected to a liquid receiving bucket.

[0006] By adopting the above technical solution, the spherical cap can rotate at multiple angles, and the cooperation between the spring and the universal bearing can make the spherical cap tank mouth fit tightly to prevent oil and gas leakage. At the same time, the residual liquid collection mechanism can realize automatic liquid collection.

[0007] As a further description of the above technical solution, there is at least one pair of connecting rods.

[0008] By adopting the above technical solution, the connecting rod can make the up and down movement of the upper connecting plate and the lower connecting plate more stable, so that the spherical cap can be flexibly rotated at multiple angles, compensate for movement errors in the horizontal and vertical directions, and seal the contact surface between the tank mouth and the spherical cap in three dimensions.

[0009] As a further description of the above technical solution, the other end of the cylinder air pipe is connected to a solenoid valve, and the input end of the solenoid valve is electrically connected to a PLC controller.

[0010] By adopting the above technical solution, the PLC controller can control the power on and off of the solenoid valve, thereby controlling the up and down movement of the cylinder piston rod.

[0011] As a further description of the above technical solution, the cylinder fixing bracket includes a U-shaped clamp, and the U-shaped clamp includes a clamp portion and a clamping plate that cooperates with the clamp portion through a nut, and the other side of the clamping plate is detachably connected to an L-shaped plate, and the cylinder and the guide rod are fixedly connected to the L-shaped plate, and the U-shaped clamp is detachably connected to the vertical pipe.

[0012] By adopting the above technical solution, the residual liquid collection mechanism can be disassembled, the hoop of the U-shaped clamp is put on the vertical pipe, the clamping plate is put on the other end of the hoop, the L-shaped plate is passed through the hoop and fixed with a nut, and the installation of the residual liquid collection mechanism can be completed.

[0013] As a further description of the above technical solution, the rotating mechanism includes an upper lifting rod, a lower lifting rod, a buffer spring and a buffer plate, the upper lifting rod is fixedly connected to the cylinder piston rod, the lower lifting rod passes through the buffer plate and is slidably connected to the buffer plate, the buffer spring is sleeved on the lower lifting rod at the bottom of the buffer plate, a stop nut is provided under the buffer spring, the top of the lower lifting rod is provided with vertical grooves and arc-shaped rotation grooves or vertical protrusions and arc-shaped rotation protrusions connected to each other, the bottom of the upper lifting rod is provided with vertical protrusions and arc-shaped rotation protrusions or vertical grooves and arc-shaped rotation grooves that cooperate with the top of the lower lifting rod, the angle of the arc-shaped rotation groove or the arc-shaped rotation protrusion is between 90-270 degrees, and the stroke length of the cylinder is greater than the sum of the lengths of the vertical grooves or vertical protrusions on the upper lifting rod and the lower lifting rod and the lengths of the arc-shaped rotation protrusions or the arc-shaped rotation grooves.

[0014] By adopting the above technical solution, the arc-shaped rotating protrusion and the arc-shaped rotating groove are set, when the cylinder piston rod is extended or retracted, the upper lifting rod can move up and down while driving the lower lifting rod to rotate 90-270 degrees, so that the liquid receiving bucket rotates around the lifting rod as the axis, and the vertical protrusion can make the liquid receiving bucket rise and fall a certain distance in the vertical direction after rotating, which will not affect the filling and liquid receiving of the vertical tube, and the stop nut can prevent the spring from falling off.

[0015] As a further improvement of the above technical solution, the shortest distance of the opening surface of the liquid receiving hopper is at least greater than the diameter of the vertical tube.

[0016] By adopting the above technical solution, the liquid receiving bucket can catch the liquid dripping from the vertical pipe, thereby avoiding waste of resources.

[0017] The utility model has the following beneficial effects:

[0018] In the utility model, the spherical cap can be flexibly rotated at multiple angles, is suitable for tank trucks with different tank mouth diameters, realizes horizontal plane compensation, can make up for motion errors, and the spring can realize upper and lower sealing compensation, so that the contact surface between the tank mouth and the spherical cap is sealed, preventing oil and gas leakage, polluting the environment, and endangering the health of personnel.

[0019] In the utility model, the cylinder can drive the upper lifting rod to rise or fall. During filling, the cylinder drives the upper lifting rod to rise, and with the cooperation of the arc-shaped protrusion and the arc-shaped rotating groove, the lower lifting rod rotates and rises, and at the same time, the liquid receiving rod and the liquid receiving bucket rotate horizontally to avoid affecting the filling of the vertical tube. After the filling is completed, the cylinder piston rod extends out, the upper lifting rod descends, driving the lower lifting rod to rotate and descend, and at the same time, the liquid receiving bucket and the liquid receiving rod rotate horizontally to the bottom of the vertical tube to realize automatic liquid receiving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a front view of the utility model;

[0023] Figure 3 It is a top view of the utility model;

[0024] Figure 4 It is a left view of the utility model;

[0025] Figure 5 This utility model Figure 2 Sectional view at the A-A' position;

[0026] Figure 6 This utility model Figure 2 Schematic diagram of the structure at B in the middle;

[0027] Figure 7 This is a schematic diagram of the structure of the cylinder fixing bracket in the utility model;

[0028] Figure 8 It is a structural schematic diagram of an upper lifting rod and a lower lifting rod of the utility model.

[0029] Among them, 100-vertical pipe, 1-sealing mechanism, 10-flange, 11-upper connecting plate, 12-bellows, 13-lower connecting plate, 14-connecting rod, 15-rod seat, 16-universal bearing, 17-spring, 18-guide tube, 19-ball cap, 2-residual liquid collecting mechanism, 21-cylinder, 22-guide rod, 23-cylinder fixing bracket, 231-U-shaped clamp, 2311-hoop, 2312-nut, 2313-pressure plate, 232-L-shaped plate, 24-rotating mechanism, 241-upper lifting rod, 242-lower lifting rod, 243-buffer spring, 244-buffer plate, 245-stop nut, 25-liquid receiving rod, 26-liquid receiving bucket. DETAILED DESCRIPTION

[0030] The specific implementation methods of the present invention are further described in detail below in combination with the accompanying drawings. However, the following embodiments are only used to help understand the implementation of the present invention and cannot be understood as further limiting the present invention.

[0031] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions.

[0032] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, but should not be construed as limiting the present utility model.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Embodiment 1

[0037] like Figure 1 As shown, the sealing mechanism 1 can be detachably connected to the vertical pipe 100 via the flange 10;

[0038] like Figure 1-5As shown, a universal compensating sealing device for collecting residual liquid is arranged on a vertical pipe 100, comprising a sealing mechanism 1, wherein the sealing mechanism 1 comprises an upper connecting plate 11 slidably connected to the vertical pipe 100, a bellows 12 is fixedly connected to the center of the bottom of the upper connecting plate 11, a lower connecting plate 13 is fixedly connected to the bottom of the bellows 12, a connecting rod 14 is arranged between the upper connecting plate 11 and the lower connecting plate 13, and the connecting rod 14 has at least one pair, one end of the connecting rod 14 is slidably connected to the upper connecting plate 11 through a rod seat 15, and the other end is fixedly connected to a universal bearing 16, and the universal bearing 16 is fixedly connected to the top of the lower connecting plate 13, a spring 17 is sleeved on the outer side 14 of the connecting rod, a guide tube 18 is fixedly connected to the bottom of the lower connecting plate 13, and a spherical cap 19 is fixedly connected to the other end of the guide tube 18, and the outer diameter of the spherical cap 19 gradually increases from bottom to top;

[0039] like Figure 1-5 As shown, it also includes a residual liquid collecting mechanism 2, which includes a cylinder 21 and a guide rod 22. The cylinder 21 is installed on the vertical pipe 100 through a cylinder fixing bracket 23. The other end of the piston rod of the cylinder 21 is rotatably connected to a lower lifting rod 242 through a rotating mechanism 24. The other end of the lower lifting rod 242 is fixedly connected to a horizontally arranged liquid receiving rod 25, and the other end of the liquid receiving rod 25 is fixedly connected to a liquid receiving bucket 26.

[0040] like Figure 6 As shown, the cylinder fixing bracket 23 includes a U-shaped clamp 231 detachably connected to the vertical pipe 100, and the U-shaped clamp 231 includes a hoop portion 2311 and a clamping plate 2313 cooperated with the hoop portion 2311 through a nut 2312, and the other side of the clamping plate 2313 is detachably connected to an L-shaped plate 232, and the cylinder 21 and the guide rod 22 are fixedly connected to the L-shaped plate 232.

[0041] like Figure 7-8 As shown, the rotating mechanism 24 includes an upper lifting rod 241, a lower lifting rod 242, a buffer spring 243 and a buffer plate 244, the upper lifting rod 241 is fixedly connected to the piston rod of the cylinder 21, the lower lifting rod 242 passes through the buffer plate 244 and is slidably connected to the buffer plate 244, the buffer spring 243 is sleeved on the lower lifting rod 242 at the bottom of the buffer plate 244, a stop nut 245 is provided below the buffer spring 243, the top of the lower lifting rod 242 is provided with vertical grooves and arc-shaped rotating grooves or vertical protrusions or arc-shaped rotating protrusions that are connected to each other, and the bottom of the upper lifting rod 241 is provided with vertical grooves and arc-shaped rotating grooves or vertical protrusions or arc-shaped rotating protrusions that cooperate with the top of the lower lifting rod 242.

[0042] In this embodiment, the other end of the air pipe of the cylinder 21 is connected to a solenoid valve, and the input end of the solenoid valve is electrically connected to a PLC controller.

[0043] The device can be installed on vertical pipes with different diameters and can be improved for adaptability. Therefore, the vertical pipe is equivalent to an accessory of the device, rather than a fixed part of the device.

[0044] Working principle: When using the device, first install the residual liquid collection mechanism 2, put the hoop part 2311 of the U-shaped clamp 231 on the drop tube 100, put the pressing plate 2313 on the other end of the hoop part 2311, and pass the L-shaped plate 232 through the hoop part 2311 and fix it with the nut 2312, and then the residual liquid collection mechanism 2 can be installed. Then install the sealing mechanism 2, put the sealing mechanism 2 outside the drop tube 100, make the bottom of the ball cap 19 have a certain distance from the bottom of the drop tube 100, and use bolts to tighten the flange 10, and then the installation can be completed. When the crane pipe is filling, the vertical pipe 100 moves to the top of the tank mouth, and the vertical pipe 100 descends. When it descends to a certain height, the PLC controller controls the solenoid valve to ventilate, the cylinder 21 contracts, and the piston rod of the cylinder 21 drives the upper lifting rod 241 to rise. With the cooperation of the arc-shaped protrusion and the arc-shaped rotating groove, the lower lifting rod 242 rotates and rises. At the same time, the liquid receiving rod 25 and the liquid receiving bucket 26 rotate and rise horizontally, which will not affect the vertical pipe filling. After rotating 90-270 degrees, the upper lifting rod 241 and the lower lifting rod 242 are spirally connected, and the upper lifting rod 241 continues to rise. Under the action of the vertical groove and the vertical protrusion, the lower lifting rod continues to rise, driving the liquid receiving plate and the liquid receiving rod to rise a distance to avoid affecting the vertical pipe filling. The vertical pipe 100 continues to descend, and the tank mouth generates an upward thrust on the ball cap 19, which is transmitted to the guide tube 18, the lower connecting plate 13 and the connecting rod 14 in sequence. The bellows 12 and the spring 17 outside the connecting rod 14 are compressed, and the upper end of the connecting rod 14 extends out from the rod seat 15 of the upper connecting plate 11. The connecting rod 14 can press the ball cap 19 through the universal bearing 16 at the bottom, so that the ball cap 19 is in sealing contact with the tank mouth. At this time, filling work can be carried out, avoiding environmental pollution and casualties caused by oil and gas leakage.

[0045] After the filling work is completed, the vertical pipe moves upward, the compressed bellows 12 and spring 17 gradually rebound, the upper end of the connecting rod 14 gradually returns to the rod seat 15, the spherical cap 19 is out of contact with the tank mouth, and the vertical pipe 100 continues to rise. When it rises to a certain height, the PLC controller controls the solenoid valve to ventilate, and the piston rod of the cylinder 21 extends downward, driving the upper lifting rod 241 to descend, and the lower lifting rod 242 descends a distance along the vertical groove and the vertical protrusion, and then, with the cooperation of the arc-shaped protrusion and the arc-shaped rotating groove, the lower lifting rod 242 rotates in the opposite direction by 90-270 degrees, and the liquid receiving bucket 26 returns to the bottom of the vertical pipe 100, realizing automatic liquid receiving and avoiding waste of resources.

Claims

1. A universal compensating sealing device for collecting residual liquid, arranged on a vertical pipe (100), characterized in that: The invention comprises a sealing mechanism (1) and a residual liquid collecting mechanism (2), wherein the residual liquid collecting mechanism (2) comprises a cylinder (21) and a guide rod (22), wherein the cylinder (21) is mounted on a vertical pipe (100) via a cylinder fixing bracket (23), wherein a piston rod of the cylinder (21) is connected to a rotating mechanism (24), wherein the other end of the rotating mechanism (24) is connected to a horizontally arranged liquid receiving rod (25), wherein the other end of the liquid receiving rod (25) is fixedly connected to a liquid receiving bucket (26), wherein the rotating mechanism (24) comprises an upper lifting rod (241), a lower lifting rod (242), a buffer spring (243) and a buffer plate (244), wherein the upper lifting rod ( 241) is fixedly connected to the piston rod of the cylinder (21), the lower lifting rod (242) passes through the buffer plate (244) and is slidably connected to the buffer plate (244), the buffer spring (243) is sleeved on the lower lifting rod (242) at the bottom of the buffer plate (244), a stop nut (245) is provided below the buffer spring (243), the top of the lower lifting rod (242) is provided with vertical grooves and arc-shaped rotating grooves or vertical protrusions and arc-shaped rotating protrusions connected to each other, and the bottom of the upper lifting rod (241) is provided with vertical protrusions and arc-shaped rotating protrusions or vertical grooves and arc-shaped rotating grooves that match the top of the lower lifting rod (242).

2. A universal compensating sealing device for self-collecting residual liquid according to claim 1, characterized in that: The sealing mechanism (1) comprises an upper connecting plate (11) slidably connected to the vertical tube (100); a bellows (12) is fixedly connected to the center of the bottom of the upper connecting plate (11); a lower connecting plate (13) is fixedly connected to the bottom of the bellows (12); a connecting rod (14) is provided between the upper connecting plate (11) and the lower connecting plate (13); one end of the connecting rod (14) is slidably connected to the upper connecting plate (11) via a rod seat (15); the other end is fixedly connected to a universal bearing (16); the universal bearing (16) is fixedly connected to the top of the lower connecting plate (13); a spring (17) is sleeved on the outer side of the connecting rod (14); a guide tube (18) is fixedly connected to the bottom of the lower connecting plate (13); the other end of the guide tube (18) is fixedly connected to a spherical cap (19); the outer diameter of the spherical cap (19) gradually increases from bottom to top; and the sealing mechanism (1) is detachably connected to the vertical tube (100).

3. A universal compensating sealing device for self-collecting residual liquid according to claim 2, characterized in that: There is at least one pair of connecting rods (14).

4. A universal compensating sealing device for self-collecting residual liquid according to claim 1, characterized in that: The stroke length of the cylinder (21) is greater than the sum of the lengths of the vertical grooves or vertical protrusions and the lengths of the arc-shaped rotating protrusions or arc-shaped rotating grooves on the upper lifting rod (241) and the lower lifting rod (242).

5. A universal compensating sealing device for self-collecting residual liquid according to claim 1, characterized in that: The angles of the arc-shaped rotating grooves or arc-shaped rotating protrusions on the upper lifting rod (241) and the lower lifting rod (242) are between 90 and 270 degrees.

6. A universal compensating sealing device for self-collecting residual liquid according to claim 1, characterized in that: The other end of the air pipe of the air cylinder (21) is connected to a solenoid valve, and the input end of the solenoid valve is electrically connected to a PLC controller.

7. A universal compensating sealing device for self-collecting residual liquid according to claim 1, characterized in that: The cylinder fixing bracket (23) comprises a U-shaped clamp (231), the U-shaped clamp (231) comprising a clamp portion (2311) and a clamping plate (2313) engaged with the clamp portion (2311) via a nut (2312), the other side of the clamping plate (2313) being detachably connected to an L-shaped plate (232), the L-shaped plate (232) being fixedly connected to the cylinder (21) and the guide rod (22).

8. A universal compensating sealing device for self-collecting residual liquid according to claim 7, characterized in that: The U-shaped clamp (231) is detachably connected to the vertical pipe (100).

9. The universal compensating sealing device for self-collecting residual liquid according to claim 1, characterized in that: The shortest distance of the opening surface of the liquid receiving hopper (26) is at least greater than the diameter of the vertical tube (100).

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