A sampling device for liquefied petroleum gas

Abstract

The present invention relates to a sampling device for liquefied petroleum gas, and relates to the technical field of sampling devices, including a main module, a continuous extraction module and a mobile module. The main module includes a supporting base plate, a guardrail is fixedly connected to the top of the supporting base plate near the edge, a rotating column is rotatably connected to the center of the top of the supporting base plate, and a rotating disk is fixedly connected to the top of the rotating column. The continuous extraction module includes a plurality of disassembly and assembly components arranged in an annular shape and at equal distances on the outer surface of the rotating disk, storage components are arranged inside the plurality of disassembly and assembly components, and a one-way component is arranged between the outer surface of the rotating column and the top of the supporting base plate. Through the arrangement of the storage component, the one-way component, the driving component, the sampling pump and the sampling tube, the staff only needs to connect the sampling tube to another liquefied gas to realize continuous and rapid sampling operations on different liquefied gases. The overall operation is fast and smooth, which improves the efficiency of classification sampling and is convenient for the staff to use.

Description

Technical Field

[0001] The invention relates to the technical field of sampling devices, in particular to a sampling device for liquefied petroleum gas. Background Art

[0002] Liquefied petroleum gas is a colorless volatile liquid obtained by pressurizing and cooling natural gas or petroleum in an oil refinery. It is very easy to self-ignite. When its content in the air reaches a certain concentration range, it can explode when it encounters an open flame. The main components of liquefied petroleum gas obtained from an oil refinery are one or two of propane, propylene, butane, and butene, and it is also mixed with a small amount of pentane, pentene and trace sulfide impurities. The sampling equipment is a kind of equipment used for liquefied gas extraction, which is convenient for the staff to collect liquefied gas.

[0003] According to the search, the Chinese patent with patent number CN220854326U discloses a sampling module for liquefied petroleum gas, including a sampler, a pressure gauge is fixedly connected to the top of the sampler, an inlet valve is fixedly connected to the top of the pressure gauge, a round tube is slidably connected to the top of the inlet valve, a groove is provided inside the round tube, a fixed component is slidably connected to the inside of the groove, a leak-proof block is slidably connected to the outside of the fixed component, a connecting pipe is fixedly connected to the top of the round tube, a vacuum pump is fixedly connected to the right end of the vacuum pump, a condenser is fixedly connected to the right end of the condenser, and a storage tank is fixedly connected to the right end of the condenser. In the utility model, this device can quickly position and install the sampler, can quickly and conveniently fix the liquefied petroleum gas module, and can clean the inside of the connecting pipe, and can remove residual gas or pollutants before or after each sampling, saving time.

[0004] With respect to the above-mentioned related technologies, the inventors believe that, although the above-mentioned sampling module can realize the sampling operation of liquefied gas during use, in the sampling process, continuous sampling is required in some cases to extract samples of liquefied gas in different containers for subsequent analysis and comparison, and the above-mentioned method can usually only perform a single sampling extraction. Therefore, when faced with such a situation, the sampling operation is relatively cumbersome and it is not convenient to realize continuous sampling operation quickly and conveniently. For this reason, we propose a sampling device for liquefied petroleum gas. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a sampling device for liquefied petroleum gas.

[0006] The present invention provides a liquefied petroleum gas sampling device that adopts the following technical solution:

[0007] A sampling device for liquefied petroleum gas includes a main body module, a continuous extraction module and a mobile module. The main body module includes a supporting base plate, a guardrail is fixedly connected to the top of the supporting base plate near the edge, a rotating column is rotatably connected to the center of the top of the supporting base plate, and a rotating disk is fixedly connected to the top of the rotating column. The continuous extraction module includes a plurality of disassembly and assembly components arranged in a ring shape and at equal distances on the outer surface of the rotating disk, and storage components are arranged inside the plurality of disassembly and assembly components. A one-way component is arranged between the outer surface of the rotating column and the top of the supporting base plate, a special-shaped plate is fixedly connected to one side of the top of the supporting base plate, and a driving component is arranged on the special-shaped plate, a sampling pump is fixedly connected to the driving component, a plug-in sleeve is fixedly connected to the output end of the sampling pump, and a sampling tube is connected to the input end of the sampling pump, and the driving component is adapted to the one-way component.

[0008] Preferably, the storage assembly includes a storage tank, a valve is fixedly connected to the top of the storage tank, an inlet pipe is fixedly connected to the top of the valve, the inlet pipe is adapted to the plug-in sleeve, a turning handle is provided on the valve, and a connecting gear is fixedly connected to the turning handle.

[0009] Preferably, the one-way component includes an annular block fixedly connected to the outer surface of the rotating column, the outer surface of the annular block is rotatably connected to a transmission gear ring, the inner wall of the transmission gear ring is provided with a ratchet movable groove, the outer surface of the annular block is provided with a plurality of telescopic grooves, the interiors of the plurality of telescopic grooves are movably connected with ratchet movable blocks, one end of the plurality of ratchet movable blocks are connected to the ratchet movable groove, and the other ends of the plurality of ratchet movable blocks are respectively fixedly connected to the inner walls of the plurality of telescopic grooves with mounting springs.

[0010] Preferably, the one-way component also includes a ratchet fixedly connected to the outer surface of the rotating column, the ratchet is located below the annular block, and the top of the supporting base plate is movably connected to a resistance spring and a ratchet, one end of the ratchet is movably connected to the outer surface of the ratchet, and one end of the resistance spring is fixedly connected to the outer surface of the ratchet.

[0011] Preferably, the driving assembly includes a cylinder fixedly connected to one side of the special-shaped plate, the output shaft of the cylinder is fixedly connected to a connecting arm, one end of the connecting arm is fixedly connected to a first rack, the first rack is adapted to the outer surface of the transmission gear ring, and a push rod is hinged on the top of the connecting arm.

[0012] Preferably, the driving assembly also includes a lifting groove opened inside the special-shaped plate, the lifting groove is movably connected with a lifting block inside, one side of the lifting block is fixedly connected to the lifting plate, the sampling pump is fixedly connected to the top of the lifting plate, the bottom of the lifting plate is fixedly connected with a second rack, the outer surface of the second rack is meshed with a connecting gear, the outer surface of the special-shaped plate is opened with a vertical groove, the vertical groove is movably connected with a connecting block inside, the connecting block is fixedly connected to the lifting block, and one end of the push rod is hinged to the connecting block.

[0013] Preferably, the disassembly and assembly component includes a card slot opened on the outer surface of the rotating disk, the internal movably clamped with a mounting block, the storage tank is fixedly connected to the inside of the mounting block, the interior of the mounting block is provided with a T-slot, the internal movably connected with two clamping rods of the T-slot, the opposite ends of the clamping rods extend to the interior of the rotating disk, and the adjacent sides of the two clamping rods are fixedly connected with a connecting spring.

[0014] Preferably, the moving module comprises two moving components respectively arranged on the front end surface and the rear end surface of the supporting base plate, a transmission belt is connected between the two moving components, and two rollers are movably connected to the two moving components.

[0015] Preferably, the moving component includes two rotating shafts which are rotatably connected to both sides of the front end surface of the supporting base plate, one end of the two rotating shafts is fixedly connected to a swing plate, the interior of the two swing plates is provided with a lifting groove, the interior of the two lifting grooves is movably connected to a lifting shaft, and the two rollers are movably connected to one end of the two swing plates away from the lifting groove.

[0016] Preferably, the moving component also includes a hollow bar fixedly connected to the front end surface of the supporting base plate, the interior of the hollow bar is rotatably connected to a threaded rod, the top and bottom ends of the threaded rod both extend to the outside of the hollow bar, the top end of the threaded rod is fixedly connected to a steering rudder, the bottom end of the threaded rod is fixedly connected to a transmission roller, the outer surface of the transmission roller is connected to a transmission belt, the interior of the hollow bar is movably connected to a lifting plate, the interior of the lifting plate is threadedly connected to the outer surface of the threaded rod, and the front end surface of the lifting plate is fixedly connected to two lifting shafts.

[0017] In summary, the present invention includes the following beneficial technical effects:

[0018] 1. The present invention arranges a storage component, a one-way component, a driving component, a sampling pump and a sampling tube, so that the staff only needs to connect the sampling tube to another liquefied gas. While the driving component and the rotating disk rotate, the plug-in sleeve is connected to another storage component to achieve continuous and rapid sampling operations on different liquefied gases. The overall operation is fast and smooth, which improves the efficiency of classification sampling and is convenient for staff to use.

[0019] 2. The present invention facilitates the disassembly, access and installation of the storage tank by arranging the mounting block, T-slot, clamping rod and connecting spring. The steps are simple and quick, thus facilitating the operation of the staff.

[0020] 3. The present invention allows the device to be easily moved through the arrangement of rollers, swing plates, lifting shafts, threaded rods and transmission belts. When the device is moved to a specified position, the rollers can be conveniently folded up. The operation process is simple and more convenient for the operator to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a sampling device for liquefied petroleum gas in an embodiment of the present invention;

[0022] Figure 2 It is a bottom view schematic diagram of a sampling device for liquefied petroleum gas in an embodiment of the present invention;

[0023] Figure 3 It is a structural schematic diagram of a mobile assembly of a sampling device for liquefied petroleum gas in an embodiment of the present invention;

[0024] Figure 4 It is a structural schematic diagram of a driving assembly of a sampling device for liquefied petroleum gas in an embodiment of the present invention;

[0025] Figure 5 It is an explosion diagram of a disassembly and assembly assembly of a sampling device for liquefied petroleum gas in an embodiment of the present invention;

[0026] Figure 6 It is a cross-sectional schematic diagram of a one-way component of a sampling device for liquefied petroleum gas in an embodiment of the present invention;

[0027] Figure 7 It is a schematic diagram of the position of the cylinder of a sampling device for liquefied petroleum gas in an embodiment of the present invention;

[0028] Figure 8 It is a sampling device for liquefied petroleum gas in the embodiment of the present invention. Figure 3 The enlarged schematic diagram at A in the middle;

[0029] Fig. 9 It is a sampling device for liquefied petroleum gas in the embodiment of the present invention. Figure 4 The enlarged schematic diagram of point B in the middle;

[0030] Fig.10 It is a sampling device for liquefied petroleum gas in the embodiment of the present invention. Figure 6 Enlarged schematic diagram at point C in the middle.

[0031] Description of reference numerals:

[0032] 100, main body module; 110, supporting bottom plate; 120, guardrail; 130, rotating column; 140, rotating disk;

[0033] 200, continuous extraction module; 210, disassembly and assembly component; 211, installation block; 212, T-slot; 213, clamping rod; 214, connecting spring; 220, storage component; 221, storage tank; 222, valve; 223, inlet pipe; 224, connecting gear; 230, one-way component; 231, annular block; 232, transmission gear ring; 233, ratchet movable groove; 234, ratchet movable block; 235, installation spring; 236, ratchet; 237, ratchet; 238, conflict spring; 240, driving component; 241, cylinder; 242, connecting arm; 243, first rack; 244, push rod; 245, lifting block; 246, lifting plate; 247, second rack; 250, sampling pump; 260, sampling tube; 270, special-shaped plate;

[0034] 300, moving module; 310, moving assembly; 311, rotating shaft; 312, swing plate; 313, lifting shaft; 314, hollow bar; 315, threaded rod; 316, lifting plate; 320, transmission belt; 330, roller. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 indirectly connected 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.

[0038] The following is combined with Figure 1-Figure 10 The present invention is described in further detail.

[0039] The embodiment of the present invention discloses a sampling device for liquefied petroleum gas, including a main body module 100, a continuous extraction module 200 and a mobile module 300. The main body module 100 includes a supporting base plate 110, a guardrail 120 is fixedly connected to the top of the supporting base plate 110 near the edge, a rotating column 130 is rotatably connected to the center of the top of the supporting base plate 110, and a rotating disk 140 is fixedly connected to the top of the rotating column 130. The continuous extraction module 200 includes a plurality of disassembly and assembly components 210 arranged in an annular shape and at equal distances on the outer surface of the rotating disk 140. Storage assemblies 220 are provided inside the multiple disassembly and assembly assemblies 210, a one-way assembly 230 is provided between the outer surface of the rotating column 130 and the top of the supporting base plate 110, a special-shaped plate 270 is fixedly connected to one side of the top of the supporting base plate 110, a driving assembly 240 is provided on the special-shaped plate 270, a sampling pump 250 is fixedly connected to the driving assembly 240, a plug-in sleeve is fixedly connected to the output end of the sampling pump 250, a sampling tube 260 is connected to the input end of the sampling pump 250, and the driving assembly 240 is adapted to the one-way assembly 230.

[0040] During use, the staff connects the sampling tube 260 to the liquefied gas to be sampled, and then opens the sampling pump 250 to draw the liquefied gas into the plug-in sleeve through the sampling tube 260. After being drawn into the plug-in sleeve, it is sent into the interior of one of the storage components 220. The staff turns on the driving component 240, and the driving component 240 will drive the plug-in sleeve to lift and then drive the one-way component 230. The one-way component 230 will idle. When the driving component 240 is reset, it will drive the one-way component 230 to drive the rotating column 130 to rotate. The rotating column 130 drives another storage component 220 to move to the bottom of the plug-in sleeve through the rotating disk 140. The driving component 240 is disengaged from the one-way component 230, and the plug-in sleeve is now docked with another storage component 220. The staff only needs to connect the sampling tube 260 to another liquefied gas, thereby realizing continuous and rapid sampling operations on different liquefied gases.

[0041] The storage assembly 220 includes a storage tank 221, a valve 222 is fixedly connected to the top of the storage tank 221, an inlet pipe 223 is fixedly connected to the top of the valve 222, the inlet pipe 223 is adapted to the plug sleeve, a turning handle is provided on the valve 222, a connecting gear 224 is fixedly connected to the turning handle, and the one-way assembly 230 includes an annular block 231 fixedly connected to the outer surface of the rotating column 130, a transmission gear ring 232 is rotatably connected to the outer surface of the annular block 231, a ratchet movable groove 233 is provided on the inner wall of the transmission gear ring 232, and the annular block 231 is fixedly connected to the outer surface of the rotating column 130. The outer surface of the block 231 is provided with a plurality of telescopic grooves, and ratchet movable blocks 234 are movably connected inside the plurality of telescopic grooves, one end of the plurality of ratchet movable blocks 234 are connected to the ratchet movable groove 233, and the other end of the plurality of ratchet movable blocks 234 are respectively fixedly connected to the inner wall of the plurality of telescopic grooves with mounting springs 235, and the one-way component 230 also includes a ratchet 236 fixedly connected to the outer surface of the rotating column 130, and the ratchet 236 is located below the annular block 231, and the top of the support base plate 110 is movably connected with a resisting spring 238 and a ratchet 233. 37, one end of the ratchet 237 is movably connected to the outer surface of the ratchet 236, one end of the resisting spring 238 is fixedly connected to the outer surface of the ratchet 237, the driving assembly 240 includes a cylinder 241 fixedly connected to one side of the special-shaped plate 270, the output shaft of the cylinder 241 is fixedly connected to a connecting arm 242, one end of the connecting arm 242 is fixedly connected to a first rack 243, the first rack 243 is adapted to the outer surface of the transmission gear ring 232, the top of the connecting arm 242 is hinged with a push rod 244, and the driving assembly 240 also ... and the connecting arm 242 is fixedly connected to a first rack 243. The lifting groove inside the special-shaped plate 270 has a lifting block 245 movably connected inside the lifting groove, a lifting plate 246 is fixedly connected to one side of the lifting block 245, a sampling pump 250 is fixedly connected to the top of the lifting plate 246, a second rack 247 is fixedly connected to the bottom of the lifting plate 246, the outer surface of the second rack 247 is meshed with the connecting gear 224, a vertical groove is provided on the outer surface of the special-shaped plate 270, a connecting block is movably connected inside the vertical groove, the connecting block is fixedly connected to the lifting block 245, and one end of the push rod 244 is hinged to the connecting block.

[0042] The cylinder 241 is opened to drive the connecting arm 242 and the first rack 243 to move. When the first rack 243 moves backward, the push rod 244 will push the lifting block 245 to rise, so that the plug-in sleeve is separated from the entry pipe 223. At this time, the first rack 243 is connected with the transmission gear ring 232. The rotation direction of the rotating column 130 is restricted by the ratchet 237 and the ratchet 236, so that the first rack 243 drives the transmission gear ring 232 to rotate idly on the outer surface of the annular block 231, and the transmission gear ring 232 can drive the ratchet movable groove 233 to push the ratchet movable block 234 to move. , when the cylinder 241 subsequently drives the first rack 243 to reset, the transmission gear ring 232 will be driven by the first rack 243 to drive the ratchet movable block 234, and the ratchet movable block 234 drives the ratchet movable block 234 and the rotating column 130 to rotate a certain angle, and then the first rack 243 is disengaged from the transmission gear ring 232, and the rotating column 130 drives another storage tank 221 to move to the bottom of the plug-in sleeve through the rotating disk 140. At this time, the plug-in sleeve is docked with another inlet pipe 223, and the subsequent staff only needs to connect the sampling tube 260 to another liquefied gas.

[0043] The disassembly and assembly component 210 includes a card slot opened on the outer surface of the rotating disk 140, and the internal movably card-connected mounting block 211 of the card slot, the storage tank 221 is fixedly connected to the inside of the mounting block 211, and the inside of the mounting block 211 is opened with a T-slot 212, and the internal movably connected to the T-slot 212 are two clamping rods 213, and the opposite ends of the clamping rods 213 extend to the inside of the rotating disk 140, and the adjacent sides of the two clamping rods 213 are fixedly connected with a connecting spring 214.

[0044] By pulling the two clamping rods 213 toward each other, the connecting spring 214 contracts and the clamping rod 213 is withdrawn from the rotating disk 140, thereby releasing the connection between the mounting block 211 and the rotating disk 140. The storage tank 221 after sampling can be disassembled and taken out by pulling the mounting block 211 outward.

[0045] The mobile module 300 includes two mobile components 310 respectively arranged on the front end surface and the rear end surface of the support base plate 110, a transmission belt 320 is connected between the two mobile components 310, and two rollers 330 are movably connected to the two mobile components 310. The mobile component 310 includes two rotating shafts 311 respectively connected to the two sides of the front end surface of the support base plate 110, one end of the two rotating shafts 311 is fixedly connected to a swing plate 312, and the two swing plates 312 are provided with lifting grooves inside, and the two lifting grooves are movably connected to the lifting shafts 313, wherein the two rollers 330 are movably connected to the far ends of the two swing plates 312. At one end away from the lifting groove, the moving component 310 also includes a hollow bar 314 fixedly connected to the front end surface of the supporting base plate 110, and the interior of the hollow bar 314 is rotatably connected to a threaded rod 315, and the top and bottom ends of the threaded rod 315 both extend to the outside of the hollow bar 314, and the top of the threaded rod 315 is fixedly connected to a steering rudder, and the bottom end of the threaded rod 315 is fixedly connected to a transmission roller, and the outer surface of the transmission roller is transmission-connected to the transmission belt 320, and the interior of the hollow bar 314 is movably connected to a lifting plate 316, and the interior of the lifting plate 316 is threadedly connected to the outer surface of the threaded rod 315, and the front end surface of the lifting plate 316 is fixedly connected to the two lifting shafts 313.

[0046] By rotating the threaded rod 315, the lifting plate 316 can be driven to rise. When the lifting plate 316 rises, the two lifting shafts 313 are driven to rise. The lifting shafts 313 will drive the two swing plates 312 to swing through the lifting grooves. The two swing plates 312 will drive two of the rollers 330 to contact the ground, and the transmission belt 320 will drive another moving component 310 to make the four rollers 330 contact the ground, making the device easy to move. When moving to the specified position, the rollers 330 can be folded up to facilitate operation by the staff.

[0047] The implementation principle of a sampling device for liquefied petroleum gas in an embodiment of the present invention is as follows: during use, the staff connects the sampling tube 260 to the liquefied gas to be sampled, and then turns on the sampling pump 250 to draw the liquefied gas into the plug-in sleeve through the sampling tube 260. The liquefied gas then enters the storage tank 221 through the plug-in sleeve and the inlet pipe 223 for storage. The staff then turns on the cylinder 241 to drive the connecting arm 242 and the first rack 243 to move. When the first rack 243 moves backward, the push rod 244 will push the lifting block 245 to rise, so that the plug-in sleeve is separated from the inlet pipe 223. At this time, the first rack 243 is connected to the transmission gear ring 232 and is connected to the inlet pipe 223 through the ratchet 237. The ratchet 236 limits the rotation direction of the rotating column 130, so that the first rack 243 drives the transmission gear ring 232 to rotate idly on the outer surface of the annular block 231, and the transmission gear ring 232 can drive the ratchet movable groove 233 to push the ratchet movable block 234 to move. When the cylinder 241 subsequently drives the first rack 243 to reset, the transmission gear ring 232 will drive the ratchet movable block 234 through the first rack 243. The ratchet movable block 234 drives the ratchet movable block 234 and the rotating column 130 to rotate a certain angle. Subsequently, the first rack 243 is disengaged from the transmission gear ring 232, and the rotating column 130 drives another storage tank 221 to move to the rotating disk 140. The plug-in sleeve is at the bottom, and at this time the plug-in sleeve is connected to another inlet pipe 223. Subsequent staff only need to connect the sampling tube 260 to another liquefied gas, so as to realize continuous and rapid sampling operations on different liquefied gases. When the second rack 247 rises, it will drive the push rod 244, and the push rod 244 will seal the storage tank 221 through the valve 222 to prevent liquefied gas leakage. When the second rack 247 descends, the transmission connecting gear 224 opens the valve 222 to facilitate the subsequent liquefied gas to enter the storage tank 221. By pulling the two clamping rods 213 close to each other, the connecting spring 214 is contracted, and the clamping rod 213 will be withdrawn from the rotating disk 140. The connection between the mounting block 211 and the rotating disk 140 is thereby released, and the mounting block 211 can be pulled outward to disassemble and retrieve the sampled storage tank 221, and the threaded rod 315 can be rotated to drive the lifting plate 316 to rise, and when the lifting plate 316 rises, it drives the two lifting shafts 313 to rise, and the lifting shafts 313 will drive the two swing plates 312 to swing through the lifting grooves, and the two swing plates 312 will drive two of the rollers 330 to contact the ground, and the transmission belt 320 will drive another moving component 310 to make the four rollers 330 contact the ground, making the device easy to move, and when it is moved to the specified position, the rollers 330 can be folded up to facilitate operation by the staff.

[0048] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sampling device for liquefied petroleum gas, comprising a main module (100), a continuous extraction module (200) and a mobile module (300), characterized in that: The main body module (100) comprises a supporting base plate (110), a guardrail (120) is fixedly connected to the top of the supporting base plate (110) near the edge, a rotating column (130) is rotatably connected to the center of the top of the supporting base plate (110), and a rotating disk (140) is fixedly connected to the top of the rotating column (130); The continuous extraction module (200) comprises a plurality of disassembly and assembly components (210) arranged in an annular shape and at equal distances on the outer surface of the rotating disk (140); a storage component (220) is arranged inside each of the plurality of disassembly and assembly components (210); a one-way component (230) is arranged between the outer surface of the rotating column (130) and the top of the supporting base plate (110); a special-shaped plate (270) is fixedly connected to one side of the top of the supporting base plate (110); a driving component (240) is arranged on the special-shaped plate (270); a sampling pump (250) is fixedly connected to the driving component (240); a plug-in sleeve is fixedly connected to the output end of the sampling pump (250); a sampling tube (260) is connected to the input end of the sampling pump (250); and the driving component (240) is adapted to the one-way component (230); The storage assembly (220) comprises a storage tank (221), the top of the storage tank (221) is fixedly connected to a valve (222), the top of the valve (222) is fixedly connected to an inlet pipe (223), the inlet pipe (223) is adapted to the plug-in sleeve, the valve (222) is provided with a turning handle, and the turning handle is fixedly connected to a connecting gear (224); The one-way component (230) comprises an annular block (231) fixedly connected to the outer surface of the rotating column (130); the outer surface of the annular block (231) is rotatably connected to a transmission gear ring (232); the inner wall of the transmission gear ring (232) is provided with a ratchet movable groove (233); the outer surface of the annular block (231) is provided with a plurality of telescopic grooves; the interiors of the plurality of telescopic grooves are all movably connected with ratchet movable blocks (234); one end of the plurality of ratchet movable blocks (234) are all connected to the ratchet movable groove (233); the other ends of the plurality of ratchet movable blocks (234) are respectively fixedly connected to the inner walls of the plurality of telescopic grooves with mounting springs (235); The one-way component (230) further includes a ratchet (236) fixedly connected to the outer surface of the rotating column (130), the ratchet (236) being located below the annular block (231), and a resisting spring (238) and a ratchet (237) being movably connected to the top of the supporting base plate (110), one end of the ratchet (237) being movably connected to the outer surface of the ratchet (236), and one end of the resisting spring (238) being fixedly connected to the outer surface of the ratchet (237); The driving assembly (240) comprises a cylinder (241) fixedly connected to one side of the special-shaped plate (270); the output shaft of the cylinder (241) is fixedly connected to a connecting arm (242); one end of the connecting arm (242) is fixedly connected to a first rack (243); the first rack (243) is matched with the outer surface of the transmission gear ring (232); and a push rod (244) is hinged on the top of the connecting arm (242); The driving assembly (240) further comprises a lifting groove provided inside the special-shaped plate (270), wherein a lifting block (245) is movably connected inside the lifting groove, a lifting plate (246) is fixedly connected to one side of the lifting block (245), the sampling pump (250) is fixedly connected to the top of the lifting plate (246), a second rack (247) is fixedly connected to the bottom of the lifting plate (246), an outer surface of the second rack (247) is meshed with a connecting gear (224), a vertical groove is provided on the outer surface of the special-shaped plate (270), a connecting block is movably connected inside the vertical groove, the connecting block is fixedly connected to the lifting block (245), and one end of the push rod (244) is hinged to the connecting block.

2. A sampling device for liquefied petroleum gas according to claim 1, characterized in that: The disassembly assembly (210) comprises a slot provided on the outer surface of the rotating disk (140), a mounting block (211) being movably connected inside the slot, the storage tank (221) being fixedly connected inside the mounting block (211), a T-shaped slot (212) being provided inside the mounting block (211), two clamping rods (213) being movably connected inside the T-shaped slot (212), opposite ends of the clamping rods (213) both extending into the interior of the rotating disk (140), and a connecting spring (214) being fixedly connected to adjacent surfaces of the two clamping rods (213).

3. A sampling device for liquefied petroleum gas according to claim 2, characterized in that: The moving module (300) comprises two moving components (310) respectively arranged on the front end surface and the rear end surface of the supporting base plate (110); a transmission belt (320) is connected between the two moving components (310); and two rollers (330) are movably connected to the two moving components (310).

4. A sampling device for liquefied petroleum gas according to claim 3, characterized in that: The moving assembly (310) comprises two rotating shafts (311) respectively rotatably connected to both sides of the front end surface of the supporting base plate (110); one end of each of the rotating shafts (311) is fixedly connected to a swing plate (312); a lifting groove is provided inside each of the two swing plates (312); a lifting shaft (313) is movably connected inside each of the two lifting grooves; and the two rollers (330) are respectively movably connected to one end of the two swing plates (312) away from the lifting groove.

5. A sampling device for liquefied petroleum gas according to claim 4, characterized in that; The moving assembly (310) further comprises a hollow bar (314) fixedly connected to the front end surface of the supporting base plate (110); a threaded rod (315) is rotatably connected inside the hollow bar (314); the top and bottom ends of the threaded rod (315) both extend to the outside of the hollow bar (314); the top end of the threaded rod (315) is fixedly connected to a steering rudder; the bottom end of the threaded rod (315) is fixedly connected to a transmission roller; the outer surface of the transmission roller is transmission-connected to a transmission belt (320); the hollow bar (314) is movably connected to a lifting plate (316); the interior of the lifting plate (316) is threadedly connected to the outer surface of the threaded rod (315); and the front end surface of the lifting plate (316) is fixedly connected to two lifting shafts (313).

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