A telescopic device for the vertical pipe of a train washing tank and its usage method

Abstract

The present invention relates to the field of petrochemical medium transportation, and particularly to a vertical pipe telescopic device for train tank washing and its usage method, which includes a vertical pipe universal joint, a vertical pipe connecting piece, and also includes a vertical pipe telescopic sewage discharge mechanism. The vertical pipe telescopic sewage discharge mechanism includes: a section of sleeve connected with a sewage pipe connection port; an upper connecting plate; a lower connecting plate; a first guide rod; a second section of sleeve; an upper connecting plate on the second layer provided with an upper pulley on the second layer; a lower connecting plate on the second layer provided with a lower pulley on the second layer; a second guide rod; a third section of sleeve; an upper connecting plate on the third layer provided with an upper pulley on the third layer; a lower connecting plate on the third layer provided with a lower pulley on the third layer; a third guide rod; a fourth section of sleeve; a four-layer plate arranged at the top of the fourth section of sleeve; rope one; rope two; rope three; rope four; a cylinder drive assembly. The present invention has the following beneficial effects: Through the retractable structural design, the length of the hose used during on-site sewage discharge is reduced, making it more time-saving and labor-saving when recovering the pipeline, and at the same time, the on-site placement is more orderly.

Description

Technical Field

[0001] The present invention relates to the field of transportation of petrochemical media, and particularly to a telescopic device for a vertical pipe of a train tank washing and its usage method. Background Art

[0002] With the rapid development of the chemical industry, the workload of changing media or regularly cleaning tank trucks for transporting petrochemical media is increasing. Currently, the common solution is to connect steam to heat the residual media on the tank wall to make it liquefy and flow to the bottom of the tank, then workers go down into the tank for cleaning, and finally the residual liquid is pumped out of the tank.

[0003] After the tank steaming is completed, there is still a lot of residual liquid at the bottom of the tank. Currently, the common solution is to put a hose into the train tank mouth and suck out the residual liquid through negative pressure. The long hose on site makes it time-consuming and laborious for recovery, there are many pipelines, and it is easy to be messy when placed on site. Summary of the Invention

[0004] The purpose of the present invention is to provide a telescopic device for a vertical pipe of a train tank washing and its usage method, which has the characteristics of shortening the length of the hose on site, making the hose placement more orderly, and saving time and effort for hose recovery.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: A telescopic device for a vertical pipe of a train tank washing includes a vertical pipe universal joint, a vertical pipe connecting piece, and also includes a vertical pipe telescopic sewage discharge mechanism. The vertical pipe telescopic sewage discharge mechanism includes:

[0006] A section of sleeve, the top of which is connected with a sewage pipe connection port;

[0007] An upper connecting plate, arranged on the top of a section of sleeve;

[0008] A lower connecting plate, arranged near the bottom of a section of sleeve;

[0009] A first guiding rod, vertically arranged, and its two ends are respectively fixedly connected with the upper connecting plate and the lower connecting plate;

[0010] A second section of sleeve, sleeved outside the first section of sleeve and slidably connected with the first section of sleeve;

[0011] An upper connecting plate of the second layer, arranged on the top of the second section of sleeve, the first guiding rod passes through the upper connecting plate of the second layer and is slidably connected with the upper connecting plate of the second layer, and an upper pulley of the second layer is arranged on the upper connecting plate of the second layer;

[0012] A lower connecting plate of the second layer, arranged near the bottom of the second section of sleeve, and a lower pulley of the second layer is arranged on the lower connecting plate of the second layer;

[0013] A second guiding rod, vertically arranged, and its two ends are respectively fixedly connected with the upper connecting plate and the lower connecting plate of the second layer;

[0014] The three - section sleeve is sleeved outside the two - section sleeve and is slidably connected to the two - section sleeve;

[0015] The three - layer upper connecting plate is arranged at the top of the three - section sleeve. The second guide rod passes through the three - layer upper connecting plate and is slidably connected to the three - layer upper connecting plate. Three - layer upper pulleys are arranged on the three - layer upper connecting plate;

[0016] The three - layer lower connecting plate is arranged near the bottom of the three - section sleeve. Three - layer lower pulleys are arranged on the three - layer lower connecting plate;

[0017] The third guide rod is vertically arranged, and its two ends are respectively fixedly connected to the three - layer upper connecting plate and the three - layer lower connecting plate;

[0018] The four - section sleeve is sleeved outside the three - section sleeve and is slidably connected to the three - section sleeve;

[0019] The four - layer plate is arranged at the top of the four - section sleeve;

[0020] One end of the first rope is fixed to the three - layer upper connecting plate, and the other end passes through the upper pulley of the second layer from above and is fixed to the lower connecting plate of the first layer;

[0021] One end of the second rope is fixed to the four - layer plate, and the other end passes through the upper pulley of the third layer from above and is fixed to the lower connecting plate of the second layer;

[0022] One end of the third rope is fixed to the upper connecting plate of the first layer, and the other end passes through the lower pulley of the second layer from below and is fixed to the three - layer upper connecting plate;

[0023] One end of the fourth rope is fixed to the four - layer plate, and the other end passes through the lower pulley of the third layer from below and is fixed to the upper connecting plate of the second layer;

[0024] The cylinder drive assembly is arranged above the upper connecting plate of the first layer, and its power output end is connected to the upper connecting plate of the second layer.

[0025] By adopting the above - mentioned technical solution, when draining sewage from the tank, first place the vertical pipe telescopic sewage - draining mechanism in the recovery state on the train tank opening, and connect the sewage - draining pipe connection port to the on - site sewage pipeline. At this time, control the cylinder drive assembly to drive the lower connecting plate of the second layer to descend. One end of the third rope is fixed to the upper connecting plate of the first layer. Driven by the lower pulley of the second layer, it drives the three - section sleeve to descend. At the same time, the lower connecting plate of the third section drives the lower pulley of the third layer to descend. One end of the fourth rope is fixed to the two - section sleeve to drive the four - section sleeve to descend. Finally, the stroke of the cylinder drive assembly is magnified by 3 times, realizing the synchronous descent of the two - section sleeve, three - section sleeve, and four - section sleeve to contact the tank bottom. The sewage in the tank is discharged through the four - section sleeve, three - section sleeve, two - section sleeve, one - section sleeve, and sewage - draining pipe connection port. Through the retractable structural design of this device, the length of the hose used during on - site sewage drainage is reduced, making the pipeline recovery more time - saving and labor - saving. At the same time, the on - site placement is more orderly, and this device has the advantage of being convenient for storage.

[0026] Preferably, it further includes a sealing assembly, which includes:

[0027] A sealing cylinder, disposed below the upper connecting plate of one layer;

[0028] A sealing portion, disposed along the bottom edge of the upper connecting plate of one layer.

[0029] By adopting the above technical solution, when the vertical pipe telescopic sewage discharge mechanism is placed on the train tank opening, the sealing assembly strengthens the sealing performance of the tank opening.

[0030] Preferably, it further includes a locking mechanism, which includes:

[0031] A locking cylinder, disposed above the upper connecting plate of one layer;

[0032] A hollow rotating shaft, disposed below the upper connecting plate of one layer, with a rotating groove opened on its side;

[0033] A bolt assembly, slidably disposed in the hollow rotating shaft and connected to the locking cylinder, and the bolt assembly can rotate first and then rise.

[0034] By adopting the above technical solution, the locking mechanism fixes the vertical pipe sewage discharge mechanism at the tank opening, and at the same time cooperates with the sealing assembly to keep the tank opening in a good sealing state. Because most of the tank trucks in China are not sealed during cleaning, or only simply sealed. When steam is introduced into the tank, under the action of steam pressure, a large amount of steam is mixed with oil and gas and discharged into the air, causing environmental pollution, steam overflow resulting in waste, low thermal energy utilization rate, indirectly leading to a long cooking process time. Moreover, during car washing, due to manual operation, the harmful components in the overflowing oil and gas will cause great harm to the physical health of front-line operators. Therefore, by providing good sealing for the tank opening, it can effectively prevent steam from being mixed with oil and gas and discharged into the air, reduce environmental pollution, reduce steam waste, improve thermal energy utilization rate, shorten the cooking time, and at the same time reduce the health harm to front-line operators.

[0035] Preferably, it further includes a flushing assembly, which includes:

[0036] A wash tank joint, disposed above the upper connecting plate of one layer;

[0037] A wash tank connecting pipe, disposed below the upper connecting plate of one layer and connected to the wash tank joint;

[0038] A wash tank spray head, disposed at the lower end of the wash tank connecting pipe.

[0039] By adopting the above technical solution, when flushing the tank, hot water is introduced into the wash tank joint, and the hot water passes through the wash tank connecting pipe and is sprayed out through the wash tank spray head to wash the tank wall.

[0040] Preferably, a rotary nozzle is rotatably arranged on the side of the washing tank nozzle. A first nozzle is arranged at the upper part of one side of the rotary nozzle, and a second nozzle is arranged at the lower part of the other side.

[0041] By adopting the above technical solution, when steaming the tank and washing the tank, the steam or hot water passes through the washing tank nozzle and the rotary nozzle, and then sprays out from the first nozzle and the second nozzle respectively. The rotary nozzle rotates 360° under the reaction force of the steam or hot water, and sprays the steam or hot water in all directions.

[0042] A method for using a vertical pipe telescopic device of a train washing tank, characterized by comprising the following steps:

[0043] Step 1: Place the vertical pipe telescopic sewage discharge mechanism in the recovery state on the train tank opening, drive the locking mechanism, so that the bolt assembly rises to lock the tank opening, and ensure that the sealing component is completely sealed with the tank car opening;

[0044] Step 2: Connect the washing tank joint with the on-site hot water and cold water;

[0045] Step 3: Connect the sewage pipe connection port with the on-site sewage pipeline;

[0046] Step 4: Control the cylinder drive assembly to drive the second-layer connecting plate to descend, so that the second sleeve, the third sleeve, and the fourth sleeve descend synchronously to contact the tank bottom;

[0047] Step 5: Pass steam into the washing tank joint, and the washing tank nozzle rotates 360° under the action of the steam, and sprays the steam in all directions;

[0048] Step 6: After the steaming of the tank is completed, pass hot water into the washing tank joint to further clean the tank wall, and draw out the sewage from the sewage pipe interface during the tank washing process;

[0049] Step 7: After the cleaning is completed, pass cold water into the washing tank joint to quickly cool the tank car;

[0050] Step 8: Draw out the sewage in the tank through the sewage pipe interface, and the operator gets into the tank for inspection.

[0051] By adopting the above technical solution, after the tank wall is cleaned with hot water, cold water is passed into the tank to quickly cool the tank car. Since the current cleaning of the tank car mainly relies on steam heating to fluidize it, most of the remaining media cannot be cleaned, and it is necessary to wait for the tank car to cool down before the front-line operators enter the pipe for further cleaning. The waiting time between the two processes is relatively long and the work efficiency is low. By quickly cooling the tank car, the waiting time between the two processes is shortened and the work efficiency is improved.

[0052] Preferably, the following steps are further included:

[0053] Step 9: After the tanker cleaning is completed, control the cylinder drive assembly to drive the second-layer connecting plate to rise, and finally realize the complete recovery of the vertical pipe telescopic sewage discharge mechanism;

[0054] Step 10: Drive the locking mechanism to lower the bolt assembly to release the tank opening, ensuring that the sealing component is separated from the tanker opening.

[0055] In summary, the present invention has the following beneficial effects:

[0056] 1. It improves the sealing performance of the tank opening. When steam is introduced into the tank, the steam and oil and gas discharged into the air are reduced, environmental pollution is reduced, waste caused by steam overflow is avoided, the thermal energy utilization rate is high, the cooking process time is indirectly shortened, and the harm to the physical health of front-line operators caused by harmful components in the overflowing oil and gas is reduced;

[0057] 2. Cold water is introduced after the steaming tank and the hot water washing tank, shortening the cooling time of the tanker. The waiting time between the two processes is short, and the work efficiency is high;

[0058] 3. After the steaming of the tank is completed, there is more residual liquid at the bottom of the tank. When sucking out the residual liquid at the bottom of the tank through negative pressure, by using the vertical pipe telescopic sewage discharge mechanism, the length of the on-site hose is shortened, making the recovery of the on-site hose more time-saving and labor-saving, and the on-site pipeline layout is easier to be more orderly. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 is the structural schematic diagram of the embodiment;

[0060] Figure 2 is the structural schematic diagram of the locking mechanism;

[0061] Figure 3 is Figure 1 the enlarged schematic diagram of part A in

[0062] Figure 4 is the cross-sectional view of the embodiment;

[0063] Figure 5 is Figure 4 the enlarged schematic diagram of part B in

[0064] Figure 6 is the side view of the vertical pipe telescopic sewage discharge mechanism;

[0065] Figure 7 is the front view of the vertical pipe telescopic sewage discharge mechanism;

[0066] Figure 8 is Figure 7 the left cross-sectional view of

[0067] Figure 9 is Figure 7 the right cross-sectional view of

[0068] Figure 10 It is a schematic diagram of the vertical pipe telescopic sewage discharge mechanism

[0069] In the figure, 1. Vertical pipe universal joint; 2. Locking mechanism; 21. Locking cylinder; 22. Bolt assembly; 23. Hollow rotating shaft; 231. Rotating groove; 3. Vertical pipe telescopic sewage discharge mechanism; 31. Sewage pipe connection port; 310. Lower connecting plate of the first layer; 311. Lower connecting plate of the second layer; 312. Lower connecting plate of the third layer; 313. Upper pulley of the second layer; 314. Upper pulley of the third layer; 315. Rope one; 316. Rope two; 317. Rope three; 318. Rope four; 319. Lower pulley of the second layer; 320. Lower pulley of the third layer; 32. Upper connecting plate of the first layer; 321. First guide rod; 33. Upper connecting plate of the second layer; 331. Second guide rod; 34. Upper connecting plate of the third layer; 341. Third guide rod; 35. Fourth layer plate; 36. First sleeve; 37. Second sleeve; 38. Third sleeve; 39. Fourth sleeve; 4. Vertical pipe connector; 5. Flushing assembly; 51. Flushing tank joint; 52. Flushing tank connecting pipe; 53. Flushing tank nozzle; 54. Rotating nozzle; 55. First nozzle; 56. Second nozzle; 6. Cylinder drive assembly; 7. Sealing assembly; 71. Sealing cylinder; 72. Sealing part. Specific embodiments

[0070] The present invention will be further described in detail below with reference to the accompanying drawings.

[0071] This specific embodiment is only an interpretation of the present invention and is not a limitation thereof. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0072] Embodiment: A vertical pipe telescopic device for a train flushing tank, as Figure 1 shown, includes a vertical pipe universal joint 1, a locking mechanism 2, a vertical pipe telescopic sewage discharge mechanism 3, a vertical pipe connector 4, a flushing assembly 5, a cylinder drive assembly 6, and a sealing assembly 7. The vertical pipe telescopic sewage discharge mechanism 3 includes a disc-shaped upper connecting plate 32 of the first layer. The upper surface of the upper connecting plate 32 of the first layer is fixedly connected with a sewage pipe connection port 31. The flushing assembly 5 includes a flushing tank joint 51 connected to the upper connecting plate 32 of the first layer, and a flushing tank connecting pipe 52 connected to the bottom of the upper connecting plate 32 of the first layer. The lower end of the flushing tank connecting pipe 52 is connected to a flushing tank nozzle 53. The locking mechanism 2 includes two locking cylinders 21 on the upper surface of the upper connecting plate 32 of the first layer.

[0073] As Figure 2As shown in the figure, the bottom of each locking cylinder 21 is connected to a hollow rotating shaft 23, and a rotating groove 231 is provided on the side surface of the hollow rotating shaft 23. A bolt assembly 22 is slidably connected in the hollow rotating shaft 23, and the bolt assembly 22 is rotatably connected to the power output shaft of the locking cylinder 21, enabling the bolt assembly 22 to rotate first and then rise.

[0074] As Figure 3 shown in the figure, a rotating nozzle 54 is rotatably provided on the side surface of the washing tank nozzle 53. A first nozzle 55 is provided at the upper part on one side of the rotating nozzle 54, and a second nozzle 56 is provided at the lower part on the other side.

[0075] As Figure 4 and Figure 5 shown in the figure, the sealing assembly 7 includes a sealing cylinder 71 and a sealing part 72 connected to the bottom of the upper connecting plate 32 on the first layer. The sealing part 72 is arranged along the bottom edge of the upper connecting plate 32 on the first layer.

[0076] As Figures 6 to 9 shown in the figure, the vertical pipe telescopic sewage discharge mechanism 3 includes a first-stage sleeve 36, a second-stage sleeve 37, a third-stage sleeve 38, a fourth-stage sleeve 39, a first rope 315, a second rope 316, a third rope 317, and a fourth rope 318.

[0077] The first-stage sleeve 36 is fixed to the bottom of the upper connecting plate 32 on the first layer, and its top is connected to the sewage pipe connection port 31. A lower connecting plate 310 on the first layer is provided near the bottom of the first-stage sleeve 36. A first guide rod 321 is fixedly connected between the upper connecting plate 32 on the first layer and the lower connecting plate 310 on the first layer.

[0078] The second-stage sleeve 37 is sleeved outside the first-stage sleeve 36 and is slidably connected to the first-stage sleeve 36. The top of the second-stage sleeve 37 is connected to the upper connecting plate 33 on the second layer. The first guide rod 321 passes through the upper connecting plate 33 on the second layer and is slidably connected to the upper connecting plate 33 on the second layer. An upper pulley 313 on the second layer is provided on the upper connecting plate 33 on the second layer. A lower connecting plate 311 on the second layer is provided near the bottom of the second-stage sleeve 37. A lower pulley 319 on the second layer is provided on the lower connecting plate 311 on the second layer. A second guide rod 331 is fixedly connected between the upper connecting plate 33 on the second layer and the lower connecting plate 311 on the second layer.

[0079] The third-stage sleeve 38 is sleeved outside the second-stage sleeve 37 and is slidably connected to the second-stage sleeve 37. The top of the third-stage sleeve 38 is provided with an upper connecting plate 34 on the third layer. The second guide rod 331 passes through the upper connecting plate 34 on the third layer and is slidably connected to the upper connecting plate 34 on the third layer. An upper pulley 314 on the third layer is provided on the upper connecting plate 34 on the third layer. A lower connecting plate 312 on the third layer is provided near the bottom of the third-stage sleeve 38. A lower pulley 320 on the third layer is provided on the lower connecting plate 312 on the third layer. A third guide rod 341 is fixedly connected between the upper connecting plate 34 on the third layer and the lower connecting plate 312 on the third layer.

[0080] The four-section sleeve 39 is sleeved outside the three-section sleeve 38 and is slidably connected to the three-section sleeve 38. A four-layer plate 35 is provided at the top of the four-section sleeve 39.

[0081] One end of the first rope 315 is fixed to the upper three-layer connecting plate 34, and the other end passes through the upper two-layer pulley 313 from above and is fixed to the lower one-layer connecting plate 310.

[0082] One end of the second rope 316 is fixed to the four-layer plate 35, and the other end passes through the upper three-layer pulley 314 from above and is fixed to the lower two-layer connecting plate 311.

[0083] One end of the third rope 317 is fixed to the upper one-layer connecting plate 32, and the other end passes through the lower two-layer pulley 319 from below and is fixed to the upper three-layer connecting plate 34.

[0084] One end of the fourth rope 318 is fixed to the four-layer plate 35, and the other end passes through the lower three-layer pulley 320 from below and is fixed to the upper two-layer connecting plate 33.

[0085] A cylinder drive assembly 6 is provided above the upper one-layer connecting plate 32, and its power output end is connected to the upper two-layer connecting plate 33.

[0086] Process of the vertical pipe telescopic sewage discharge mechanism 3 descending to wash the tank: First, place the vertical pipe telescopic sewage discharge mechanism 3 in the recovery state on the train tank opening, drive the locking mechanism 2 to make the bolt assembly 22 rise to lock the tank opening, ensuring that the sealing part 72 is completely sealed with the tank car opening. The washing tank joint 51 is connected to the on-site hot water and cold water. The sewage pipe connection port 31 is connected to the on-site sewage pipeline. As Figure 10 shown, at this time, control the cylinder drive assembly 6 to drive the upper two-layer connecting plate 33 to descend. One end of the third rope 317 is fixed to the upper one-layer connecting plate 32, and driven by the lower two-layer pulley 319, it drives the three-section sleeve 38 to descend. At the same time, the lower three-layer connecting plate 312 drives the lower three-layer pulley 320 to descend. One end of the fourth rope 318 is fixed to the two-section sleeve 37 to drive the four-section sleeve 39 to descend. Finally, the stroke of the cylinder drive assembly 6 is magnified by 3 times to realize the synchronous descent of the two-section sleeve 37, three-section sleeve 38, and four-section sleeve 39 to contact the tank bottom. At this time, steam is introduced into the washing tank joint 51, and the washing tank nozzle 53 rotates 360° under the action of the steam, spraying steam in all directions, making the temperature of the steamed tank rise faster. After the steaming of the tank is completed, hot water is introduced into the washing tank joint 51 to further clean the tank wall. After the cleaning is completed, cold water is introduced into the washing tank joint 51 to quickly cool the tank car, facilitating the operation workers to enter the tank for inspection. Greatly shortening the time wasted by the natural cooling of the tank car. During the tank washing process, the sewage will drain out of the tank car along the sewage pipe connection port 31.

[0087] The vertical tube telescopic sewage discharge mechanism 3 ascending recovery process: After the tank car is cleaned, the control cylinder drive assembly 6 drives the second-layer upper connecting plate 33 to ascend, and the second-layer upper connecting plate 33 is connected to the second-layer upper pulley 313. One end of the rope 1 315 is fixed to the first-layer lower connecting plate 310, and the three-section sleeve 38 is driven to move upward under the drive of the second-layer upper pulley 313. The upward movement of the three-section sleeve 38 drives the three-layer upper pulley 314 to move upward. The second rope 316 is fixed to the second-layer lower connecting plate 311 under the drive of the three-layer upper pulley 314 to move upward, and drives the four-section sleeve 39 to move upward. Finally, the vertical tube telescopic sewage discharge mechanism 3 is completely recovered. At this time, the locking mechanism 2 is driven to make the bolt assembly 22 descend to release the tank mouth, ensuring that the sealing part 72 is separated from the tank car mouth.

[0088] A method for using a vertical pipe telescopic device for a train washing tank comprises the following steps:

[0089] Step 1: Place the recovered vertical pipe telescopic sewage discharge mechanism 3 on the tank opening of the train, drive the locking mechanism 2, so that the bolt assembly 22 rises and locks the tank opening, ensuring that the sealing part 72 is completely sealed with the tank opening;

[0090] Step 2: The sink connector 51 is connected to the hot water and cold water on site;

[0091] Step 3: The sewage pipe connection port 31 is connected to the on-site sewage pipeline;

[0092] Step 4: Control the cylinder drive assembly 6 to drive the second-layer connecting plate to descend, so that the second-section casing 37, the third-section casing 38, and the fourth-section casing 39 synchronously descend to contact the tank bottom;

[0093] Step 5: Steam is introduced into the tank cleaning joint 51, and the tank cleaning nozzle 53 rotates 360 degrees under the action of the steam to spray steam in all directions;

[0094] Step 6: After the tank is steamed, hot water is introduced into the tank washing joint 51 to further clean the tank wall. During the tank washing process, the sewage is pumped out from the sewage pipe connection port 31;

[0095] Step 7: After the cleaning is completed, cold water is introduced into the tank connector 51 to quickly cool the tank truck;

[0096] Step 8: The sewage in the tank is pumped out through the sewage pipe connection port 31, and the operator goes down to the tank for inspection;

[0097] Step 9: After the tank truck is cleaned, the cylinder drive assembly 6 is controlled to drive the second-layer connecting plate to rise, and finally the vertical pipe telescopic sewage discharge mechanism 3 is completely recovered;

[0098] Step 10: Drive the locking mechanism 2 to lower the bolt assembly 22 to release the tank opening, ensuring that the sealing portion 72 is separated from the tanker opening.

Claims

1. A telescopic device for the vertical pipe of a train washing tank, comprising a vertical pipe universal joint (1) and a vertical pipe connecting piece (4), characterized in that, It further includes a vertical pipe telescopic sewage discharge mechanism (3), and the vertical pipe telescopic sewage discharge mechanism (3) includes: a section of sleeve (36) whose top is connected with a sewage pipe connection port (31); an upper connecting plate (32) arranged at the top of the section of sleeve (36); a lower connecting plate (310) arranged near the bottom of the section of sleeve (36); a first guide rod (321) vertically arranged, and both ends thereof are fixedly connected with the upper connecting plate (32) and the lower connecting plate (310) respectively; a second section of sleeve (37) sleeved outside the first section of sleeve (36) and slidably connected with the first section of sleeve (36); an upper connecting plate (33) of the second layer arranged at the top of the second section of sleeve (37), the first guide rod (321) passes through the upper connecting plate (33) of the second layer and is slidably connected with the upper connecting plate (33) of the second layer, and an upper pulley (313) of the second layer is arranged on the upper connecting plate (33) of the second layer; a lower connecting plate (311) of the second layer arranged near the bottom of the second section of sleeve (37), and a lower pulley (319) of the second layer is arranged on the lower connecting plate (311) of the second layer; a second guide rod (331) vertically arranged, and both ends thereof are fixedly connected with the upper connecting plate (33) and the lower connecting plate (311) respectively; a third section of sleeve (38) sleeved outside the second section of sleeve (37) and slidably connected with the second section of sleeve (37); an upper connecting plate (34) of the third layer arranged at the top of the third section of sleeve (38), the second guide rod (331) passes through the upper connecting plate (34) of the third layer and is slidably connected with the upper connecting plate (34) of the third layer, and an upper pulley (314) of the third layer is arranged on the upper connecting plate (34) of the third layer; a lower connecting plate (312) of the third layer arranged near the bottom of the third section of sleeve (38), and a lower pulley (320) of the third layer is arranged on the lower connecting plate (312) of the third layer; a third guide rod (341) vertically arranged, and both ends thereof are fixedly connected with the upper connecting plate (34) and the lower connecting plate (312) respectively; a fourth section of sleeve (39) sleeved outside the third section of sleeve (38) and slidably connected with the third section of sleeve (38); a fourth-layer plate (35) arranged at the top of the fourth section of sleeve (39); a first rope (315) whose one end is fixed to the upper connecting plate (34) of the third layer and the other end passes through the upper pulley (313) of the second layer from above and is fixed to the lower connecting plate (310); a second rope (316) whose one end is fixed to the fourth-layer plate (35) and the other end passes through the upper pulley (314) of the third layer from above and is fixed to the lower connecting plate (311) of the second layer; a third rope (317) whose one end is fixed to the upper connecting plate (32) and the other end passes through the lower pulley (319) of the second layer from below and is fixed to the upper connecting plate (34) of the third layer; a fourth rope (318) whose one end is fixed to the fourth-layer plate (35) and the other end passes through the lower pulley (320) of the third layer from below and is fixed to the upper connecting plate (33) of the second layer; a cylinder driving assembly (6) arranged above the upper connecting plate (32) of the first layer, and its power output end is connected with the upper connecting plate (33) of the second layer.

2. The telescopic device for the vertical pipe of the train washing tank according to claim 1, characterized in that, It further includes a sealing assembly (7), and the sealing assembly (7) includes: a sealing cylinder (71) arranged below the upper connecting plate (32) of the first layer; The sealing part (72) is arranged along the bottom edge of the upper connecting plate (32) of one layer.

3. The telescopic device for the vertical pipe of the train washing tank according to claim 2, characterized in that, It further includes a locking mechanism (2), and the locking mechanism (2) includes: A locking cylinder (21) arranged above the upper connecting plate (32) of one layer; A hollow rotating shaft (23) arranged below the upper connecting plate (32) of one layer, and a rotating groove (231) is provided on its side surface; A bolt assembly (22) slidably arranged in the hollow rotating shaft (23) and connected to the locking cylinder (21), and the bolt assembly (22) can rotate first and then rise.

4. The telescopic device for the vertical pipe of the train washing tank according to claim 1, characterized in that, It further includes a flushing assembly (5), and the flushing assembly (5) includes: A wash tank joint (51) arranged above the upper connecting plate (32) of one layer; A wash tank connecting pipe (52) arranged below the upper connecting plate (32) of one layer and connected to the wash tank joint (51); A wash tank spray head (53) arranged at the lower end of the wash tank connecting pipe (52).

5. The telescopic device for the vertical pipe of the train washing tank according to claim 1, characterized in that, A rotating spray head (54) is rotatably arranged on the side surface of the wash tank spray head (53). A first nozzle (55) is arranged at the upper part of one side of the rotating spray head (54), and a second nozzle (56) is arranged at the lower part of the other side.

6. A method for using the telescopic device of the vertical pipe of the train washing tank according to claim 5, characterized in that, It includes the following steps: Step 1: Place the vertical pipe telescopic sewage discharge mechanism (3) in the recovery state on the train tank opening, drive the locking mechanism (2), so that the bolt assembly (22) rises to lock the tank opening, and ensure that the sealing part (72) is completely sealed with the tank car opening; Step 2: Connect the wash tank joint (51) with the on-site hot water and cold water; Step 3: Connect the sewage pipe connection port (31) with the on-site sewage pipeline; Step 4: Control the cylinder drive assembly (6) to drive the second-layer connecting plate to descend, so that the second-section sleeve (37), the third-section sleeve (38), and the fourth-section sleeve (39) synchronously descend to contact the tank bottom; Step 5: Pass steam into the wash tank joint (51), and the wash tank spray head (53) rotates 360° under the action of the steam to spray steam in all directions; Step 6: After the tank steaming is completed, pass hot water into the wash tank joint (51) to further clean the tank wall, and draw out the sewage from the sewage pipe connection port (31) during the tank washing process; Step 7: After the cleaning is completed, pass cold water into the wash tank joint (51) to quickly cool the tank car; Step 8: Draw out the sewage in the tank through the sewage pipe connection port (31), and the operator gets into the tank for inspection.

7. The usage method of a telescopic device for the vertical pipe of a train washing tank according to claim 6, characterized in that, It further includes the following steps: Step 9: After the tank car cleaning is completed, control the cylinder drive assembly (6) to drive the second-layer connecting plate to rise, and finally realize the complete recovery of the vertical pipe telescopic sewage discharge mechanism (3); Step 10: Drive the locking mechanism (2) so that the bolt assembly (22) descends to release the tank opening, and ensure that the sealing part (72) is separated from the tank car opening.

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