Folding TANK tank closed cleaning device

Abstract

The invention discloses a folding TANK tank closed cleaning device, which belongs to the technical field of tank car cleaning equipment, comprises a spring bolt type tank opening sealing assembly for sealing a tank car opening, and is characterized by comprising a folding swing arm assembly for connecting a three-dimensional spray head, a transmission mechanism for driving the folding swing arm assembly to unfold or contract, and a driving mechanism for driving the folding swing arm assembly to unfold or contract, the transmission mechanism drives the folding swing arm assembly to change the angle so that the three-dimensional nozzle can clean the interior of the tank car without dead corners, and the three-way rotating mechanism is used for being in butt joint with an external cleaning source and driving the folding swing arm assembly to change the angle. The technical problem that cleaning dead angles exist due to the fact that the internal structures of the tank car are diversified is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of tank truck cleaning equipment, and in particular relates to a foldable TANK tank closed cleaning device. Background Art

[0002] In the petroleum, chemical and liquid food industries, tank trucks are indispensable means of transportation, carrying the important mission of ensuring the smooth operation of the production chain. Tank trucks frequently shuttle between various links such as raw material collection, processing and production, warehousing and storage, and terminal distribution. The cleanliness of their interior is directly related to product quality, production safety, environmental protection and other aspects. Therefore, tank truck cleaning is not only a daily task, but also a key link to ensure the sustainable development of the industry.

[0003] With the acceleration of industrialization and the continuous growth of market demand, the use of tank trucks has increased dramatically, and the corresponding cleaning needs have also expanded. Tank trucks are large in size, with a single loading capacity of ten tons, and the transport media are diverse, ranging from flammable and explosive petroleum products to highly viscous chemical raw materials and liquid foods with extremely high hygiene requirements. Each medium has different requirements for cleaning. Therefore, the cleaning of tank trucks must be efficient, fast, and multifunctional to meet the cleaning needs in different scenarios;

[0004] The complex structural design of the tank truck and the presence of supporting ribs bring great challenges to the cleaning work. Although the ribs enhance the structural strength of the tank body, the presence of the ribs creates multiple blind spots in the tank truck that are difficult to reach. Traditional three-dimensional nozzle flushing methods often cannot effectively cover them, resulting in incomplete cleaning and accumulation of residues, which in turn affects the quality of subsequent loaded materials.

[0005] At the same time, traditional cleaning methods also have serious environmental risks. Yopu and most cleaning operations are carried out in an open environment, and the chemical solvents or high-pressure water flow used in the cleaning process may carry organic matter directly into the outside, causing serious air pollution. This violates the principles of green development of modern industry. In addition, emissions may also have an impact on the surrounding ecological environment. Summary of the invention

[0006] Purpose of the invention: The purpose of the present invention is to provide a foldable TANK tank closed cleaning device to solve the technical problem of cleaning dead corners due to the diverse internal structures of tank trucks.

[0007] The above technical purpose of the present invention is achieved through the following technical solutions: a foldable TANK tank closed cleaning device, including a locking tongue type tank mouth sealing assembly for closing the tank mouth of a tank truck, characterized in that: a folding swing arm assembly for connecting a three-dimensional nozzle, a steam connecting pipe conveys a cleaning source to the folding swing arm assembly through a first rotating connecting piece, a transmission mechanism for driving the folding swing arm assembly to expand or contract, the transmission mechanism drives the folding swing arm assembly to change its angle so that the three-dimensional nozzle can clean the interior of the tank truck without dead angles, and a three-way rotating mechanism connected to the folding swing arm assembly is used to realize the angle change of the folding swing arm assembly.

[0008] Furthermore: the three-way rotating mechanism includes a three-way connecting pipe, the lower part of the three-way connecting pipe is rotatably connected to the connecting pipe through a second rotating connecting piece, an external hand wheel is arranged on the second rotating connecting piece, a dividing pin is fixed on the hand wheel, and the dividing pin is inserted into a hole on the surface of the second rotating connecting piece to achieve locking.

[0009] Further: the ball head driving mechanism comprises a ball head upper pressure plate and a ball head lower pressure plate connected to each other, and a ball head installed and fixed in the middle of the ball head pressure plate, a lower cover connecting seat fixedly connected to the upper part of the ball head, the lower cover connecting seat and the upper cover connecting seat are supported by a spacer sleeve and fixed by a fastener, and the lower part of the connecting pipe is fixedly connected to the upper cover connecting seat;

[0010] The driven shaft passes through the upper cover connecting seat, the lower cover connecting seat and the ball head in sequence and is fixed by the second bearing. The second fixed bearing is fixedly connected to the upper cover connecting seat. The first driven gear installed on the first driven shaft is meshed with the first driving gear of the first driving shaft. The first driving shaft is driven by the driving power assembly.

[0011] Further: the transmission mechanism includes a transmission rod assembly and a gear box assembly, wherein;

[0012] The transmission rod assembly includes a transmission shaft and an upper coupling and a lower coupling connected to the transmission shaft, the upper coupling is connected to, and the upper coupling of the transmission shaft is connected to the first driven shaft.

[0013] Further: the gearbox assembly includes a worm support and a gearbox connection connected to the worm support, a bearing cover for closing the upper part of the worm support, the lower part of the bearing cover has a fixed bearing, and the upper part of the worm passes through the fixed bearing and the bearing cover in sequence;

[0014] The gear box is provided with a second driven gear and a second driving gear meshing with the second driven gear, the lower part of the worm passes through the gear box and is fixedly connected to the second driven gear, the second driving gear is fixedly connected to the second driving shaft, and the lower coupling at the lower part of the transmission shaft is connected to the second driving shaft;

[0015] An outer bracket fixedly connected to the worm bracket, the outer bracket has a fixed inner ring, the outer ring of the inner ring is sleeved with a rotating outer ring, the outer ring of the outer ring is a worm wheel, the worm is meshed with the worm wheel, the transition connecting plate is connected to the outer bracket, and the driving sprocket is fixedly connected to the outer ring through a pin shaft;

[0016] The protective shell is sleeved on the folding swing arm assembly, and a driving sprocket and a driven sprocket are installed in the protective shell. The driving sprocket and the driven sprocket drive the chain to rotate.

[0017] Further: the folding swing arm assembly comprises a one-section pipe, a two-section pipe and a three-section pipe, the upper end of the one-section pipe sequentially penetrates the ball head, the connecting pipe and the three-way connecting pipe and is fixed at the penetration point, and the end portion is rotatably connected to the steam connecting head through a first rotating member, the lower end of the one-section pipe penetrates the protective shell and the second driving sprocket and is fixedly connected to the outer ring, the end portion of the two-section pipe is rotatably connected to the inner ring by a third rotating connecting member, the other end of the two-section pipe is rotatably connected to the three-section pipe through a fourth rotating connecting member, and the back of the fourth connecting member is fixedly connected to the driven sprocket;

[0018] The upper end of the first tube section is connected to the connecting tube, and the third tube section is connected to the three-dimensional nozzle.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. Design a three-section structure of the folding swing arm assembly with a transmission rod assembly and a gearbox assembly, and use the worm gear in the gearbox assembly to drive the two-section pipe and the three-section pipe to expand or contract synchronously inside the tanker;

[0021] 2. Use a three-dimensional rotating nozzle with a synchronously expanded or contracted folding arm assembly. During the expansion or contraction of the folding arm assembly, hot water or steam is introduced to drive the three-dimensional rotating nozzle to rotate or revolve, thereby achieving no-dead-angle cleaning inside the tank truck;

[0022] 3. The folding swing arm assembly is fixedly connected to the connecting pipe, and the rotation position of the folding swing arm assembly is changed by turning the hand wheel. On the one hand, it is convenient to connect the tank mouth of the tank truck by rotating the hand wheel to drive the folding swing arm assembly to change its rotation position and insert it into the tank truck. On the other hand, after the folding swing arm assembly is inserted into the tank truck, the angle of the folding swing arm assembly inside the tank truck can also be changed by turning the hand wheel. Since the structure of the present application is more reasonable, the production cost is lower and it is suitable for comprehensive promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a working state diagram of the present invention;

[0024] Figure 2 It is a diagram of the expanded state of the present invention;

[0025] Figure 3 It is a structural diagram of the three-way rotating mechanism of the present invention;

[0026] Figure 4 It is a mechanism diagram of the ball head driving mechanism of the present invention;

[0027] Figure 5 The present invention Figure 4 A cross-sectional view of

[0028] Figure 6 is a cross-sectional view of the transmission rod assembly of the present invention;

[0029] Figure 7 is a top view of the gearbox assembly of the present invention;

[0030] Figure 8 The present invention Figure 7 AA section view;

[0031] Fig. 9 The present invention Figure 7 BB section view;

[0032] Fig.10 is a structural diagram of the folding swing arm assembly of the present invention;

[0033] Fig.11 It is a structural diagram of a three-section pipe of the present invention;

[0034] Fig.12 It is a cross-sectional view of the protective shell of the present invention. 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. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] In the description of the invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" 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 invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the 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] Embodiment 1:

[0038] In one embodiment of the present invention, Figure 1 and Figure 2As shown, a foldable TANK tank closed cleaning device includes a locking tongue type tank mouth sealing assembly for closing the tank mouth of a tank truck, characterized in that: a foldable swing arm assembly is used to connect a three-dimensional nozzle 11, a steam connection pipe 1 transmits a cleaning source to the foldable swing arm assembly through a first rotating connection member 2, a transmission mechanism is used to drive the foldable swing arm assembly to expand or contract, the transmission mechanism drives the foldable swing arm assembly to change its angle so that the three-dimensional nozzle 11 can clean the inside of the tank truck without dead angles, and a three-way rotating mechanism connected to the foldable swing arm assembly is used to realize the angle change of the foldable swing arm assembly;

[0039] In the above technical solution: the locking tongue type tank mouth sealing assembly adopts a locking tongue type tank mouth sealing assembly with a patent that has been authorized by our company, case application number: 202120489654.0, and the tank mouth of the tank truck is sealed by the locking tongue type tank mouth sealing assembly.

[0040] like Figure 3 As shown, the three-way rotating mechanism includes a three-way connecting pipe 3, the lower part of the three-way connecting pipe 3 is rotatably connected to the connecting pipe 5 through a second rotating connecting member 4, an external hand wheel 6 is arranged on the second rotating connecting member 4, an indexing pin 7 is fixed on the hand wheel 6, and the indexing pin 7 is inserted into a hole 100 on the surface of the second rotating connecting member 4 to achieve locking;

[0041] In the above technical solution: the second rotary connector 4 is composed of a rotary joint flange and a rotary joint body, and the rotary joint body is composed of an inner ring, an outer ring, and a steel ball installed between the inner ring and the outer ring;

[0042] A joint of the three-way connecting pipe 3 is rotatably connected to the rotating joint body of the second rotating connecting piece 4 at the upper part of the connecting pipe 5 through the rotating joint flange of the second rotating connecting piece 4. The three-way connecting pipe 3 also has a joint for connecting to the external blast inlet. A hand wheel 6 is installed on the rotating joint body of the connecting pipe 5, and a group of holes 100 are opened circumferentially on the rotating connection body of the second rotating connecting piece 4. The indexing pin 7 extending from the hand wheel 6 is inserted into the hole 100.

[0043] The connecting pipe 5 is driven to rotate synchronously by rotating the hand wheel 6 .

[0044] like Figure 4 and Figure 5 As shown, the ball head driving mechanism includes a ball head upper pressure plate 33 and a ball head lower pressure plate 34 connected to each other, and a ball head 35 installed and fixed in the middle of the ball head pressure plate 33, a lower cover connecting seat 36 fixedly connected to the upper part of the ball head 35, the lower cover connecting seat 36 and the upper cover connecting seat 38 are supported by a spacer sleeve 37 and fixed by a fastener 39, and the lower part of the connecting pipe 5 is fixedly connected to the upper cover connecting seat 38;

[0045] The driven shaft 40 passes through the upper cover connecting seat 38, the lower cover connecting seat 36 and the ball head 35 in sequence and is fixed by the second fixed bearing 42. The second fixed bearing 41 is fixedly connected to the upper cover connecting seat 38. The first driven gear 42 installed on the first driven shaft 40 is meshed with the first driving gear 44 of the first driving shaft 43. The first driving shaft 43 is driven by the driving power assembly 45.

[0046] By adopting the above technical solution: the connecting pipe 5 is fixedly connected to the lower cover connecting seat 36, so that the folding swing arm assembly can be rotated by rotating the hand wheel 6 to drive the ball head 35 to rotate, and the position inside the tank truck can be changed;

[0047] The driving power assembly 45 drives the first driving shaft 43 to rotate, driving the first driving gear 44 to rotate. The first driving gear 44 drives the meshed first driven gear 42 to rotate. During the rotation of the first driven gear 42, the first driven shaft 40 is driven to rotate. The first driven shaft 40 drives the transmission shaft 13 to rotate.

[0048] like Figure 6 As shown, the transmission mechanism comprises a transmission rod assembly and a gear box assembly, wherein;

[0049] The transmission rod assembly includes a transmission shaft 13 and an upper coupling 14 and a lower coupling 15 connected to the transmission shaft 13 , the upper coupling 14 is connected to , and the upper coupling 14 of the transmission shaft 13 is connected to the first driven shaft 40 .

[0050] like Figures 7 to 9 As shown, the gearbox assembly includes a worm support 16 and a gearbox 17 connected to the worm support 16, a bearing cover 18 for closing the upper part of the worm support 16, a fixed bearing 19 is provided at the lower part of the bearing cover 18, and the upper part of the worm 20 passes through the fixed bearing 19 and the bearing cover 18 in sequence;

[0051] The gear box 17 is provided with a second driven gear 21 and a second driving gear 21 meshing with the second driven gear 22. The lower part of the worm 20 passes through the gear box 17 and is fixedly connected to the second driven gear 22. The second driving gear 21 is fixedly connected to the second driving shaft 23. The lower coupling 15 at the lower part of the transmission shaft 13 is connected to the second driving shaft 23.

[0052] An outer bracket 101 fixedly connected to the worm bracket 16, the outer bracket 101 has a fixed inner ring 26, the outer ring of the inner ring 25 is sleeved with a rotating outer ring 25, the outer ring of the outer ring 25 is a worm wheel 27, the worm 20 is meshed with the worm wheel 27, the transition connecting plate 28 is connected to the outer bracket 101, and the driving sprocket 29 is fixedly connected to the outer ring 25 through a pin shaft;

[0053] like Fig.12As shown, the protective shell 30 is mounted on the folding swing arm assembly, and the driving sprocket 29 and the driven sprocket 31 are installed in the protective shell 30. The driving sprocket 29 and the driven sprocket 31 drive the chain 32 to rotate;

[0054] By adopting the above technical solution: the worm bracket 16 is fixedly connected to the upper part of the gear box 17, the bearing cover 18 closes the upper part of the worm bracket 16, bearings are installed below the bearing cover 18 and above the gear box 17, the two ends of the worm 20 are inserted into the bearings and fixedly connected to the second driven gear 22 below, the second driving shaft 23 is inserted into the gear box 17 and fixedly connected to the second driving gear 21, the second driving shaft 23 is limited by the bearing, the second driving gear 21 is meshed with the second driven gear 22, the upper part of the second driving shaft 23 is connected to the lower coupling 15, the second driving shaft 23 is driven to rotate during the rotation of the transmission shaft 13, the second driving shaft 23 is driven to rotate, the second driving gear 21 is driven to rotate, the second driving gear 21 is driven to rotate, the second driven gear 22 is driven to rotate, the worm 20 is driven to rotate, and the worm 20 is driven to rotate the worm wheel 27;

[0055] The outer bracket 101 is fixedly connected to the worm bracket 16, the outer ring 25 is sleeved on the inner ring 26 for rotation, the inner ring 26 is fixedly connected to the outer bracket 101, the turbine 27 is fixed on the outer ring 25, and the turbine 27 is meshed with the worm 20, and the rotation of the worm 20 drives the turbine 27 to rotate, and the transition connecting plate 28 is fixedly connected to the outer surface of the outer bracket 101;

[0056] A driving sprocket 29 and a driven sprocket 31 as well as a chain 32 rotating through the two are installed in the protective shell 30. The driving sprocket 29 is fixedly connected to the turbine 27 through a pin shaft. The driving sprocket 29 rotates with the rotation of the turbine 27. The rotation of the driving sprocket 29 drives the driven sprocket 31 to rotate.

[0057] like Fig.10 and Fig.12 As shown, the folding swing arm assembly includes a one-section pipe 9, a two-section pipe 10 and a three-section pipe 12. The upper end of the one-section pipe 9 passes through the ball head 35, the connecting pipe 5 and the three-way connecting pipe 3 in sequence and is fixed at the penetration point. The end portion is rotatably connected to the steam connecting head 1 through the first rotating member 2. The lower end of the one-section pipe 9 passes through the protective shell 30 and the second driving sprocket 29 and is fixedly connected to the inner ring 26. The end of the two-section pipe 10 is rotatably connected to the inner ring 26 by the third rotating connecting member 8. The other end of the two-section pipe 10 is rotatably connected to the three-section pipe 12 through the fourth rotating connecting member 13. The back of the fourth connecting member 13 is fixedly connected to the driven sprocket 31.

[0058] The upper end of the first section of the pipe 9 is connected to the connecting pipe 5, and the third section of the pipe 12 is connected to the three-dimensional nozzle 11;

[0059] In the above technical scheme: the third rotating connector 8 and the fourth rotating connector 13 have the same structure as the second rotating connector 2, the one-section pipe 9, the two-section pipe 10 and the three-section pipe 12 are all composed of multiple sections of straight pipes and elbows connected to each other, the upper part of the one-section pipe 9 passes through the ball head 35, the connecting pipe 5 and the three-way connecting pipe 3 in sequence and is fixed at the penetration point. The rear end is rotatably connected to the steam connecting head 1 through the first rotating member 2, the lower part of the one-section pipe 9 is fixedly connected to the inner ring 26, the two-section pipe 10 is fixedly connected to the outer ring 25, one end of the three-section pipe 12 is connected to the rotating joint flange of the fourth rotating connector 13, the rotating joint body of the fourth rotating connector 13 is installed at one end of the two-section pipe, and is rotatably connected to the three-section pipe 12 through the rotating joint body, and the other end of the three-section pipe 12 is connected to the three-dimensional nozzle 11;

[0060] The connecting pipe and the ball head are rotated by rotating the hand wheel 6, and during the rotation, the folding swing arm assembly consisting of the first section pipe 9, the second section pipe 10 and the third section pipe 12 is driven to swing in the tank car.

[0061] Through the combination of the schemes of the present invention, the working principle of the present invention is as follows: the foldable TANK tank closed cleaning device is moved to the top of the tank mouth of the tank truck, and then the staff rotates the hand wheel 6 to drive the three-way pipe 3, the connecting pipe 5 and the folding swing arm assembly to rotate synchronously to be parallel to the tank truck, and then the cleaning device is pressed down to make the folding swing arm assembly inserted into the tank truck and then sealed with the tank mouth through the locking tongue type tank mouth sealing assembly;

[0062] The driving power assembly 45 is started, and the first driving shaft 43 is driven by the driving power assembly 45 to drive the first driving gear 44 to rotate, and the first driving gear 44 drives the mutually meshing first driven gear 42 to rotate, and the first driven shaft 40 is driven to rotate during the rotation of the first driven gear 42, and the first driven shaft 40 drives the transmission shaft 13 to rotate, and the second driving shaft 23 is driven to rotate during the rotation of the transmission shaft 13, and the second driving shaft 23 drives the second driving gear 22 to rotate, and the second driven gear 21 is driven to rotate during the rotation of the second driving gear 22, and the worm 20 is driven to rotate during the rotation of the second driven gear 21, and the rotation of the worm 20 drives the turbine 27 to rotate, and the turbine 27 drives the outer ring 25 to rotate, and the outer ring 25 drives the two-section tube 10 to rotate synchronously during the rotation, and the driving sprocket 29 is fixed, and the two-section tube 10 drives the three-section tube 12 to follow during the rotation of the two-section tube 10;

[0063] During the rotation of the outer ring 25, the driving sprocket 29 is also synchronously driven to rotate. The driving sprocket 29 drives the driven sprocket 31 to rotate through the chain 32. During the rotation of the driven sprocket 31, the three-section pipe 12 is driven to rotate, thereby realizing the synchronous expansion or contraction of the two-section pipe 10 and the three-section pipe 12. The rotation ratio is determined by the reduction ratio of the driving sprocket and the driven sprocket.

[0064] While the above process is being carried out, steam or hot water is introduced from the outside through a steam connecting pipe or a three-way connecting pipe into the first, second and third pipes of the folding swing arm assembly to drive the three-dimensional nozzle to rotate and clean the tank truck. The three-dimensional rotating nozzle is not the core point of this solution, so an externally purchased three-dimensional rotating nozzle is used. By measuring the internal structure of the tank truck, the rotation speed of the driving power assembly is set to achieve full coverage cleaning of the tank truck interior;

[0065] After cleaning is completed, the driving power assembly is reversed to achieve the contraction of the second and third sections of the folding swing arm assembly. The contraction path is the same as the deployment path. After contraction, the locking tongue type tank mouth sealing assembly is released and lifted up as a whole to leave the tank truck, completing the cleaning.

[0066] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention. These improvements should also be regarded as within the scope of protection of the present invention.

Claims

1. A foldable TANK tank closed cleaning device, comprising a locking tongue type tank mouth sealing assembly for closing the tank mouth of a tank truck, characterized in that: A folding swing arm assembly is used to connect a three-dimensional nozzle (11), a steam connection pipe (1) conveys a cleaning source to the folding swing arm assembly through a first rotating connection piece (2), a transmission mechanism is used to drive the folding swing arm assembly to expand or contract, the transmission mechanism drives the folding swing arm assembly to change its angle so that the three-dimensional nozzle (11) can clean the interior of the tank truck without dead angles, and a three-way rotating mechanism connected to the folding swing arm assembly is used to achieve angle change of the folding swing arm assembly.

2. A foldable TANK tank closed cleaning device according to claim 1, characterized in that: The three-way rotating mechanism comprises a three-way connecting pipe (3), the lower part of which is rotatably connected to a connecting pipe (5) via a second rotating connecting piece (4), an external hand wheel (6) is arranged on the second rotating connecting piece (4), an indexing pin (7) is fixed on the hand wheel (6), and the indexing pin (7) is inserted into a hole (46) on the surface of the second rotating connecting piece (4) to achieve locking.

3. A foldable TANK tank closed cleaning device according to claim 2, characterized in that: The ball head driving mechanism comprises a ball head upper pressure plate (33) and a ball head lower pressure plate (34) connected to each other, and a ball head (35) installed and fixed in the middle of the ball head upper pressure plate (33), a lower cover connecting seat (36) fixedly connected to the upper part of the ball head (35), the lower cover connecting seat (36) and the upper cover connecting seat (38) are supported by a spacer sleeve (37) and fixed by a fastener (39), and the lower part of the connecting pipe (5) is fixedly connected to the upper cover connecting seat (38); The driven shaft (40) passes through the upper cover connecting seat (38), the lower cover connecting seat (36) and the ball head (35) in sequence and is fixed by a second fixed bearing (42); the second fixed bearing (41) is fixedly connected to the upper cover connecting seat (38); a first driven gear (42) installed on the first driven shaft (40) is meshed with a first driving gear (44) of the first driving shaft (43); and the first driving shaft (43) is driven by a driving power assembly (45).

4. The foldable TANK closed cleaning device according to claim 3 is characterized by: The transmission mechanism comprises a transmission rod assembly and a gear box assembly, wherein; The transmission rod assembly comprises a transmission shaft (13) and an upper coupling (14) and a lower coupling (15) connected to the transmission shaft (13), wherein the upper coupling (14) is connected to the transmission shaft (13), and the upper coupling (14) of the transmission shaft (13) is connected to the first driven shaft (40).

5. The foldable TANK closed cleaning device according to claim 4 is characterized by: The gearbox assembly comprises a worm support (16) and a gearbox (17) connected to the worm support (16), a bearing cover (18) for sealing the upper part of the worm support (16), a fixed bearing (19) being provided at the lower part of the bearing cover (18), and an upper part of the worm (20) passing through the fixed bearing (19) and the bearing cover (18) in sequence; A second driven gear (21) and a second driving gear (21) meshing with the second driven gear (22) are provided in the gear box (17); the lower part of the worm (20) passes through the gear box (17) and is fixedly connected to the second driven gear (22); the second driving gear (21) is fixedly connected to the second driving shaft (23); and the lower coupling (15) at the lower part of the transmission shaft (13) is connected to the second driving shaft (23); An outer bracket (101) is fixedly connected to the worm bracket (16), the outer bracket (47) has a fixed inner ring (26), the outer ring of the inner ring (25) is sleeved with a rotating outer ring (25), the outer ring of the outer ring (25) is a worm wheel (27), the worm (20) is meshed with the turbine (27), the transition connecting plate (28) is connected to the outer bracket (101), and the driving sprocket (29) is fixedly connected to the outer ring (25) through a pin shaft; The protective shell (30) is sleeved on the folding swing arm assembly. A driving sprocket (29) and a driven sprocket (31) are installed in the protective shell (30). The driving sprocket (29) and the driven sprocket (31) drive a chain (32) to rotate.

6. The foldable TANK closed cleaning device according to claim 1 is characterized by: The folding swing arm assembly comprises a first-section pipe (9), a second-section pipe (10) and a third-section pipe (12); the upper end of the first-section pipe (9) passes through a ball head (35), a connecting pipe (5) and a three-way connecting pipe (3) in sequence and is fixed at the penetration point, and the end portion is rotatably connected to the steam connecting head (1) through a first rotating member (2); the lower end of the first-section pipe (9) passes through a protective shell (30) and a driving sprocket (29) and is rotatably connected to the inner ring (26); the end of the second-section pipe (10) is fixedly connected to the outer ring (25); the other end of the second-section pipe (10) is rotatably connected to the third-section pipe (12) through a fourth rotating connecting member (13); and the back of the fourth connecting member (13) is fixedly connected to the driven sprocket (31); The upper end of the first tube section (9) is connected to the connecting tube (5), and the third tube section (12) is connected to the three-dimensional nozzle (11).

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