Gas cylinder cleaning device

Abstract

The present invention belongs to the technical field of hollow object cleaning equipment and specifically relates to a gas cylinder cleaning device, comprising a base body and at least two cleaning units, wherein the base body includes a cleaning member through-hole extending upward and downward and a receiving groove located on the outer side of the base body corresponding to each cleaning unit, the receiving groove is connected to the cleaning member through-hole and is located below the cleaning member through-hole; the cleaning unit includes a cleaning member slidably inserted into the cleaning member through-hole, and also includes an articulated arm and an articulated arm elastic member, the cleaning member includes a flexible cleaning strip and an elastic sheet; the cleaning unit also includes a limiting component located in the cleaning member through-hole, the limiting component includes an outer pressure block and an inner pressure block respectively arranged inside and outside the cleaning member, and a pressure block elastic member pressed between the outer pressure block and the inner pressure block, the outer side of the outer pressure block has a rubber layer and passes outward from the cleaning member through-hole, the outer top surface of the outer pressure block extends from top to bottom and is arranged obliquely outward; when the gas cylinder cleaning device moves upward, the outer top surface of the outer pressure block is squeezed inward by the bottle mouth.

Description

Technical Field

[0001] The invention belongs to the technical field of hollow object cleaning equipment, and particularly relates to a gas cylinder cleaning device. Background Art

[0002] After storing oxygen, nitrogen, argon and various mixed gases for a long time, some impurities will remain on the inner wall of the cylinder, such as chemical reaction residues produced by the conversion between different types of gases, impurities caused by corrosion of the inner wall of the cylinder, and impurities entering the cylinder from the outside. The inner wall of the cylinder needs to be cleaned regularly.

[0003] To this end, patent application CN115178553B discloses a gas cylinder inner wall cleaning device, comprising a sliding seat, a first cylinder for driving the sliding seat up and down, a mandrel mounted on the sliding seat, and a sliding sleeve that slides vertically on the mandrel. The device also includes multiple scrapers arranged around the mandrel, with the tops of the scrapers mounted on the mandrel via a first support rod, and the bottoms of the scrapers mounted on the sliding sleeve via a second support rod. The first support rod is hinged at both ends to the tops of the scrapers and the mandrel, respectively, while the second support rod is hinged at both ends to the bottoms of the scrapers and the sliding sleeve, respectively.

[0004] During use, the gas cylinder is first secured with its mouth facing upward. The first cylinder then drives the sliding seat, ejector rod, sliding sleeve, and scraper into the cylinder. Once the sliding sleeve contacts the bottom of the cylinder, the sliding seat continues to move downward, causing the first and second support rods to rotate relative to each other, pushing the scraper away from the ejector rod. The scraper then presses against the inner wall of the cylinder. As the cylinder rotates, the scraper and the cylinder rotate relative to each other, cleaning the inner wall of the cylinder.

[0005] In the prior art, a scraper is inserted into the gas cylinder and engages with the inner wall of the gas cylinder. When the scraper and the gas cylinder rotate relative to each other, the scraper can clean the inner wall of the gas cylinder. However, a problem with the prior art gas cylinder inner wall cleaning device is that the scraper extends up and down, and can only contact and clean the vertically extending side walls of the gas cylinder. However, the top wall of the gas cylinder is arc-shaped, and the scraper cannot engage with the top wall of the gas cylinder, so it cannot clean the top wall, resulting in a blind spot in the cleaning. Summary of the Invention

[0006] The present invention provides a gas cylinder cleaning device to solve the technical problem in the prior art that the top wall of the gas cylinder cannot be cleaned.

[0007] To solve the above problems, the present invention provides a gas cylinder cleaning device that adopts the following technical solution: a gas cylinder cleaning device comprising a base extending vertically, and at least two cleaning units evenly distributed around the base, wherein the base comprises a cleaning member through-hole extending vertically corresponding to each cleaning unit, and a receiving groove located outside the base, the receiving groove being in communication with the cleaning member through-hole and being located below the cleaning member through-hole;

[0008] The cleaning unit includes a cleaning member that is slidably inserted into the through hole of the cleaning member, and also includes a hinged arm and an elastic member of the hinged arm. The inner end of the hinged arm is hinged to the bottom of the receiving groove, and the outer end is connected to the cleaning member. The elastic member of the hinged arm is used to drive the hinged arm to open outward after the hinged arm is inserted into the gas cylinder. The cleaning member includes a flexible cleaning strip and an elastic sheet. The elastic sheet is used to press the flexible cleaning strip outward against the top wall of the gas cylinder.

[0009] The cleaning unit also includes a limiting component located in the perforation of the cleaning member, the limiting component is used to position the upper and lower limits of the gas cylinder cleaning device at the bottle mouth of the gas cylinder, the limiting component includes an external pressure block and an internal pressure block respectively arranged inside and outside the cleaning member, and a pressure block elastic member pressed between the external pressure block and the internal pressure block, the outer side of the external pressure block has a rubber layer and passes outward from the perforation of the cleaning member, the outer top surface of the external pressure block extends from top to bottom and is arranged inclined outward; when the gas cylinder cleaning device moves upward, the outer top surface of the external pressure block is squeezed by the bottle mouth and moves inward and squeezes the cleaning member, the inner pressure block and the base, after the external pressure block is squeezed by the bottle mouth, the base can be lifted up and move upward relative to the cleaning member.

[0010] Beneficial effect: When the articulated arm is inserted into the gas cylinder, the elastic member of the articulated arm can drive the articulated arm to expand outward. When the articulated arm expands outward, it can pull the cleaning member downward. When the gas cylinder cleaning device is lifted, the outer pressure block in the limiting component is squeezed by the bottle mouth, squeezing the cleaning member, the inner pressure block, and the base, so that the gas cylinder cleaning device is limited in the upper and lower positions at the bottle mouth. Because there is a rubber layer on the outside of the outer pressure block, the friction between the rubber layer and the bottle mouth is relatively large, while the inner pressure block and the base are in rigid contact and the friction is relatively small. When the outer pressure block is squeezed by the bottle mouth and the base is lifted, the base can move upward relative to the cleaning member and the limiting component, and the articulated arm moves upward accordingly, so that the cleaning member has redundancy to deform outward, and the elastic sheet can press the flexible cleaning strip against the top wall of the gas cylinder. During the rotation of the gas cylinder, the flexible cleaning strip can clean the top wall. The limiting component limits the base and the cleaning member up and down, ensuring that the flexible cleaning strip is in continuous contact with the top wall, thereby improving the cleaning effect.

[0011] Preferably, the outer bottom surface of the outer pressure block extends from top to bottom and is arranged inclined inward.

[0012] Preferably, the external pressure block includes a pressure plate and a protrusion, the protrusion being located in the middle of the outer side of the pressure plate and extending outward from a perforation of the cleaning member. The perforation of the cleaning member is provided with a support step, on which the pressure plate is supported. When the external pressure block is squeezed by the bottle mouth, the pressure plate moves inward and separates from the support step. The support step ensures that the limiting component does not automatically fall downward.

[0013] Preferably, the cleaning unit further comprises a push plate, the outer end of which is hinged to the outer end of the hinged arm, and the push plate has a vertical state and a retracted state. When the push plate is in the vertical state, the push plate is arranged perpendicularly to the hinged arm and presses the cleaning member against the side wall of the gas cylinder. When the push plate is in the retracted state, the push plate is retracted into the hinged arm.

[0014] The gas cylinder cleaning device also includes a push plate driving mechanism for driving the push plate to swing back and forth.

[0015] Preferably, the push plate driving mechanism includes a push component, a transmission component, a locking component and an elastic reset component. The push component includes a push rod corresponding to each cleaning unit, the push rod is slidably assembled in the base along the up and down direction, and the lower end of the push rod can extend out of the base, and the side of the push rod is provided with a transmission tooth segment;

[0016] The transmission component includes a gear shaft rotatably mounted in the articulated arm, a first spur gear fixed to the inner end of the gear shaft and adapted to mesh with the transmission tooth segment, a first bevel gear fixed to the outer end of the gear shaft, and a second bevel gear fixedly arranged relative to the push plate. The first bevel gear and the second bevel gear are engaged, and when the push rod moves downward with the base and abuts the bottom wall of the gas cylinder, it moves upward and drives the push plate to swing to a vertical position. The locking component is used to lock the push rod when the push plate swings to a vertical position, and the elastic reset component is used to drive the push rod downward after the locking component unlocks the push rod. By utilizing the characteristic that the push rod is pushed upward upon contacting the bottom wall of the gas cylinder, the gear shaft, the first spur gear, the first bevel gear, and the second bevel gear in the transmission component can drive the push plate to rotate to a vertical position, eliminating the need for an additional power source to drive the push plate, resulting in lower costs.

[0017] Preferably, the locking component includes a fixed block cantilevered in the horizontal direction and fixed to the top of the push rod, and also includes a locking block, a locking block elastic member, a second spur gear and an unlocking block, the locking block and the unlocking block are both slidably assembled in the base along the horizontal direction, the second spur gear is rotatably installed in the base, the inner end of the locking block corresponds to the top of the push rod and the bottom of the inner end has an inclined surface, the bottom of the outer end of the locking block is meshed with the top of the second spur gear, the outer end of the unlocking block extends to the outside of the base and the outer end is a sharp angle, and the top of the inner end of the unlocking block is meshed with the bottom of the second spur gear;

[0018] The locking block elastic piece is press-fitted between the locking block and the base body, and applies an inward elastic force to the locking block.

[0019] Preferably, the elastic reset component includes a connecting block connected to each push rod, and a spring fixed on the connecting block, and the spring is used to press on the base to apply a downward elastic force to the connecting block and each push rod.

[0020] Preferably, a flexible cleaning strip is provided on the side of the articulated arm, and the flexible cleaning strip on the articulated arm is used to contact the bottom wall of the gas cylinder. The flexible cleaning strip on the side of the articulated arm can contact the bottom wall, thereby completing the cleaning of the bottom wall, so that the gas cylinder cleaning device can clean the top wall, side walls and bottom wall, avoiding blind spots in cleaning.

[0021] Preferably, the top of the base has a reduced diameter section, and the gas cylinder cleaning device includes a connecting ring that slides on the reduced diameter section in the up and down directions. The connecting ring is connected to each of the cleaning members to pull the cleaning members upward to drive the articulated arm to swing inward and be received in the accommodating groove.

[0022] Preferably, the gas cylinder cleaning device further comprises a connecting ring elastic member, which is arranged on the base and applies an upward elastic force to the connecting ring. The connecting ring elastic member can assist in pulling the connecting ring upward, saving manpower.

[0023] The beneficial effect is that when the articulated arm is inserted into the gas cylinder, the elastic member of the articulated arm can drive the articulated arm to expand outward, and when the articulated arm expands outward, it can pull the cleaning member downward. When the gas cylinder cleaning device is lifted, the outer pressure block in the limiting component is squeezed by the bottle mouth, squeezing the cleaning member, the inner pressure block, and the base, so that the gas cylinder cleaning device is limited in the upper and lower positions at the bottle mouth. Because the outer pressure block has a rubber layer on the outside, the friction between the rubber layer and the bottle mouth is relatively large, while the friction between the inner pressure block and the base is relatively small due to the rigid contact between the rubber layer and the base. When the outer pressure block is squeezed by the bottle mouth and the base is lifted, the base can move upward relative to the cleaning member and the limiting component, and the articulated arm moves upward accordingly, giving the cleaning member redundant space for outward deformation. The elastic sheet can press the flexible cleaning strip against the top wall of the gas cylinder. During the rotation of the gas cylinder, the flexible cleaning strip can clean the top wall. The limiting component limits the base and cleaning member up and down, ensuring that the flexible cleaning strip is in constant contact with the top wall, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of a gas cylinder cleaning device;

[0025] Figure 2 This is the front view of the gas cylinder cleaning device;

[0026] Figure 3 for Figure 2 A sectional perspective view of the middle AA section;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 This is a schematic diagram of the gas cylinder cleaning device when cleaning the top wall of the gas cylinder;

[0029] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0030] Figure 7 A three-dimensional view of the base body (showing only one set of ejector pin holes and receiving slots);

[0031] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0032] Figure 9 is the main view of the base;

[0033] Figure 10 for Figure 9 Cross-sectional view of the middle BB section;

[0034] Figure 11 for Figure 9 Cross-sectional view of the CC section;

[0035] Figure 12 for Figure 9 Cross-sectional view of the middle DD section;

[0036] Figure 13 is a top view of the substrate;

[0037] Figure 14 for Figure 13 Cross-sectional view of section EE;

[0038] Figure 15 A perspective view of the gas cylinder cleaning device with the base removed (only one set of cleaning units is shown);

[0039] Figure 16 This is a schematic diagram of the structure of the push rod, gear shaft, first spur gear, first bevel gear, and second bevel gear in the push plate drive mechanism;

[0040] Figure 17 It is a structural diagram of the limiting component.

[0041] Description of reference numerals:

[0042] 1. Base; 11. Reduced diameter section; 12. Center hole; 13. Horizontal hole; 14. Cleaning element hole; 15. Receiving groove; 16. Ejector rod hole; 17. Fixing block hole; 18. Connecting block hole; 19. Locking block guide hole; 110. Unlocking block guide hole; 111. Side hole; 112. Support step; 113. Gear mounting hole.

[0043] 21. Main pipe; 22. Branch pipe;

[0044] 3. Cleaning unit; 31. Articulated arm; 32. Second flexible cleaning strip; 33. Push plate; 34. First flexible cleaning strip; 35. Elastic sheet; 36. External pressure block; 361. Pressure plate; 362. Protrusion; 363. Rubber layer; 37. Internal pressure block; 38. Pressure block elastic member; 39. Push plate placement slot;

[0045] 41. Push rod; 42. Transmission gear segment; 43. Gear shaft; 44. First spur gear; 45. First bevel gear; 46. Second bevel gear; 47. Fixing block; 48. Locking block; 49. Locking block elastic member; 410. Second spur gear; 411. Unlocking block; 412. Connecting block; 413. Spring;

[0046] 5. Connecting ring;

[0047] 6. Connecting ring elastic part;

[0048] 7. Gas cylinder; 71. Top wall; 72. Side wall; 73. Bottom wall; 74. Bottle mouth. DETAILED DESCRIPTION

[0049] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0050] The embodiment of the gas cylinder cleaning device provided by the present invention:

[0051] like Figures 1 to 17 As shown, the gas cylinder cleaning device includes a base body 1, a water inlet pipe, a cleaning unit 3, a push plate driving mechanism, a connecting ring 5, and a connecting ring elastic member 6.

[0052] In this embodiment, the structure is described with the mouth of the gas cylinder 7 facing upward as a reference.

[0053] like Figures 7 to 14 As shown, the base 1 is a cylindrical structure extending vertically, with a reduced diameter section 11 at its top. Three cleaning units 3 are provided, evenly spaced around the axis of the base 1. A central hole 12 and horizontal holes 13 are defined within the base 1. The central hole 12 is located at the center of the base 1 and extends vertically, with the upper end of the central hole 12 extending to the top surface of the base 1. The inner end of the horizontal hole 13 communicates with the bottom of the central hole 12, while the outer end extends to the outer surface of the base 1.

[0054] The base body 1 is further provided with a cleaning member through-hole 14 , a receiving groove 15 , a push rod through-hole 16 , a fixing block through-hole 17 , a connecting block through-hole 18 , a locking block guide hole 19 , and an unlocking block guide hole 110 .

[0055] The number of cleaning member through-holes 14 , receiving grooves 15 , push rod through-holes 16 , fixing block through-holes 17 , locking block guide holes 19 , and unlocking block guide holes 110 is equal to the number of cleaning units 3 and corresponds one to one.

[0056] Cleaning element through-hole 14 extends vertically, with the upper end of cleaning element through-hole 14 extending to the reduced diameter section 11 of base body 1. Side through-holes 111 are formed on the outer wall of cleaning element through-hole 14, communicating with the exterior of base body 1. Base body 1 has support steps 112 located on the outer wall of cleaning element through-hole 14, on either side of the horizontal axis of side through-hole 111.

[0057] The receiving groove 15 is formed on the outer side of the base body 1 . The receiving groove 15 is located below the cleaning member through-hole 14 , and the receiving groove 15 is communicated with the cleaning member through-hole 14 .

[0058] The push rod through hole 16 extends up and down, and the lower end of the push rod through hole 16 extends to the bottom surface of the base body 1. The push rod through hole 16 is connected to the receiving groove 15.

[0059] The fixing block through-hole 17 extends up and down. The fixing block through-hole 17 is located above the push rod through-hole 16 . The fixing block through-hole 17 is communicated with the push rod through-hole 16 .

[0060] Locking block guide hole 19 and unlocking block guide hole 110 both extend horizontally. Locking block guide hole 19 is located above unlocking block guide hole 110 and communicates with fixed block through-hole 17. Unlocking block guide hole 110 communicates with the exterior of base 1. Locking block guide hole 19 and unlocking block guide hole 110 are connected via a vertically extending gear mounting hole 113.

[0061] The connecting block through-hole 18 is located at the center of the base 1 , extends up and down, and is connected to the three push rod through-holes 16 .

[0062] In this embodiment, in order to open various through holes and guide holes on the base 1, the base 1 is designed as a split structure, for example, it is split at the locking block guide hole 19 and the unlocking block guide hole 110, and the water inlet pipe, cleaning unit 3, and push plate drive mechanism are installed in place and then combined together.

[0063] The water inlet pipe includes a main pipe 21 extending vertically and a branch pipe 22 extending horizontally. The main pipe 21 is installed in the central hole 12 of the base 1, and the branch pipe 22 is installed in the horizontal hole 13 of the base 1. The main pipe 21 is connected to the branch pipe 22.

[0064] The structures of the cleaning units 3 are the same, and only one of them is used as an example for explanation. Figures 3 to 16 As shown, the cleaning unit 3 includes a cleaning member, an articulated arm 31 , an articulated arm elastic member, a limiting member, a second flexible cleaning strip 32 , and a pushing plate 33 .

[0065] The cleaning member includes a first flexible cleaning strip 34 and an elastic sheet 35, both of which are strip-shaped. The first flexible cleaning strip 34 is fixed to the outside of the elastic sheet 35, specifically by gluing or other methods. The outside of the first flexible cleaning strip 34 is used to clean the top wall 71 and side walls 72 of the gas cylinder 7. The elastic sheet 35 deforms outward, pushing the first flexible cleaning strip 34 outward along with it.

[0066] The cleaning member is inserted into the cleaning member through-hole 14 of the base body 1 so as to slide in the up-down direction. The cleaning member can move up-down relative to the base body 1 .

[0067] The inner end of the articulated arm 31 is hinged to the base 1 about a horizontal axis. Specifically, a hinge shaft is fixed to the inner end of the articulated arm 31, and the hinge shaft is rotatably mounted at the bottom of the receiving groove 15 in the base 1. The outer end of the articulated arm 31 is connected to the lower end of the cleaning member, specifically by bolting or directly welding the articulated arm 31 to the elastic sheet 35. When the outer end of the articulated arm 31 is opened away from the base 1, the articulated arm 31 can pull the cleaning member downward.

[0068] The hinged arm elastic member is mounted between the base 1 and the hinged arm 31. This elastic member applies an elastic force to the hinged arm 31, which forces the outer end of the hinged arm 31 to expand outward. The hinged arm elastic member is a coil spring that fits over the hinge axis of the hinged arm 31. In other embodiments, the hinged arm elastic member can be a compression spring, with one end connected to the base 1 and the other end connected to the hinged arm 31.

[0069] The function of the limiting component is to lock the cleaning element. The limiting component is located in the cleaning element through-hole 14 of the base 1 and includes an external pressure block 36, an internal pressure block 37, and a pressure block elastic member 38. The external pressure block 36 is located outside the internal pressure block 37. The external pressure block 36 and the internal pressure block 37 are spaced apart from each other, and the space between the external pressure block 36 and the internal pressure block 37 allows the cleaning element to pass through. The pressure block elastic member 38 connects the external pressure block 36 and the internal pressure block 37. The pressure block elastic member 38 here is a compression spring. The compression spring is located on both sides of the cleaning element and separates the external pressure block 36 and the internal pressure block 37. The internal pressure block 37 is attached to the base 1.

[0070] The outer pressure block 36 includes a pressure plate 361, a protrusion 362, and a rubber layer 363. The pressure plate 361 and the protrusion 362 are integrally formed, and the pressure plate 361 is connected to the pressure block elastic member 38. The protrusion 362 is located on the outside of the pressure plate 361. In the horizontal direction perpendicular to the inside and outside, the width of the protrusion 362 is smaller than the width of the pressure plate 361, and the protrusion 362 is located in the middle of the pressure plate 361. The outer top and outer bottom of the protrusion 362 both have inclined surfaces. The inclined surface of the outer top extends from top to bottom and tilts outward, and the inclined surface of the outer bottom extends from top to bottom and tilts inward. The rubber layer 363 is fixed to the outside of the protrusion 362, which can be specifically fixed by gluing or bolting.

[0071] When the external pressure block 36 is only subjected to gravity and the pressure block elastic member 38, its pressure plate 361 is supported on the support step 112 of the base 1, and its protrusion 362 extends from the side perforation 111 of the base 1. The cleaning member is not compressed by the external pressure block 36 or the internal pressure block 37, and can move freely up and down. When the external pressure block 36 is subjected to inward pressure from the bottle mouth 74, it overcomes the elastic force of the pressure block elastic member 38 and squeezes the cleaning member, the internal pressure block 37, and the base 1, clamping the cleaning member. Simultaneously, the pressure plate 361 of the external pressure block 36 separates from the support step 112 on the base 1. Because the outermost layer of the external pressure block 36 is the rubber layer 363, the friction between the external pressure block 36 and the bottle mouth 74 is relatively high. However, the internal pressure block 37 and the base 1 are both rigid structures, resulting in relatively low friction. When subjected to an upward force, the base body 1 can move upward independently relative to the outer pressure block 36 , the inner pressure block 37 and the cleaning member.

[0072] The second flexible cleaning strip 32 is fixed to the side of each hinged arm 31 , and its function is to clean the bottom wall 73 of the gas cylinder 7 .

[0073] The function of the push plate 33 is to push the cleaning member against the side wall 72 of the gas cylinder 7 to clean the side wall 72. Specifically, the outer end of the push plate 33 is hinged to the outer end of the articulated arm 31 via a hinge shaft. When the push plate 33 swings outward, it is perpendicular to the articulated arm 31. The push plate 33 is in a vertical state and can push the cleaning member outward. Specifically, a push plate placement groove 39 is provided on the articulated arm 31. The push plate placement groove 39 and the cleaning member are located on the same side of the articulated arm 31. The push plate 33 is hinged in the push plate placement groove 39. When the push plate 33 swings inward, it can be stored in the push plate placement groove 39, and the push plate 33 is in a retracted state.

[0074] The function of the push plate driving mechanism is to drive the push plate 33 to swing back and forth. Specifically, when the gas cylinder cleaning device is extended into the gas cylinder 7 and cleans the top wall 71, the push plate driving mechanism drives the push plate 33 to swing inward to a retracted state; when the gas cylinder cleaning device cleans the side wall 72 of the gas cylinder 7, the push plate driving mechanism drives the push plate 33 to swing outward to a vertical state.

[0075] The push plate driving mechanism includes a push component, a transmission component, a locking component and an elastic reset component. The push component includes three push rods 41 corresponding to the three cleaning units 3. The push rods 41 are slidably assembled in the push rod through holes 16 of the base 1. A transmission tooth segment 42 is provided on the outside of the push rod 41.

[0076] The transmission component includes a gear shaft 43 , a first spur gear 44 , a first bevel gear 45 , and a second bevel gear 46 . There are three gear shafts 43 , three first spur gears 44 , three first bevel gears 45 , and three second bevel gears 46 , which correspond to the three cleaning units 3 in a one-to-one manner.

[0077] The gear shaft 43 is rotatably mounted within the articulated arm 31. Specifically, the rotation axis of the gear shaft 43 is perpendicular to the rotation axis of the articulated arm 31, and the gear shaft 43 extends along the articulated arm 31. The inner end of the gear shaft 43 extends inside the articulated arm 31. A first spur gear 44 is fixedly mounted to the inner end of the gear shaft 43, and a first bevel gear 45 is fixedly mounted to the outer end of the gear shaft 43. A second bevel gear 46 is fixedly mounted to the articulated axis of the push plate 33, thereby being fixed relative to the push plate 33. The first bevel gear 45 and the second bevel gear 46 engage, and when the gear shaft 43 rotates, the push plate 33 is driven to rotate via the first bevel gear 45 and the second bevel gear 46.

[0078] The locking member has a locked state and an unlocked state. In the locked state, the locking member locks the push plate 33 in a vertical position, so that the first flexible cleaning strip 34 is attached to the side wall 72 of the gas cylinder 7. In the unlocked state, the push plate 33 is no longer locked by the locking member, and the elastic return member drives the push plate 33 to return to the retracted state.

[0079] The locking assembly includes three locking units, each corresponding to one of the three cleaning units 3. The three locking units have the same structure, so only one of them will be used as an example for illustration. The locking unit includes a fixed block 47, a locking block 48, a locking block elastic member 49, a second spur gear 410, and an unlocking block 411. The fixed block 47 is fixedly mounted on the top of the push rod 41, with both ends of the fixed block 47 extending horizontally. The fixed block 47 slides vertically into the fixed block through-hole 17 of the base 1.

[0080] Locking block 48 slides horizontally within locking block guide hole 19 of base 1. A first transmission tooth is formed at the bottom of locking block 48. A sloped surface extends downward and slopes outward at the bottom inner end of locking block 48. A locking block elastic member 49, a compression spring, is attached to the outer end of locking block 48. This elastic member 49 is a compression spring that applies a spring force to locking block 48, causing it to slide inward.

[0081] The second spur gear 410 is rotatably mounted in the gear mounting hole 113 of the base 1 , and the top of the second spur gear 410 is engaged with the first transmission tooth of the locking block 48 .

[0082] The unlocking block 411 slides horizontally into the unlocking block guide hole 110 of the base 1. A second transmission tooth is formed on the top of the unlocking block 411, which meshes with the bottom of the second spur gear 410. The outer end of the unlocking block 411 extends outside the base 1. The outer end of the unlocking block 411 is pointed, and both the top and bottom have inclined surfaces. The top inclined surface extends downward and tilts outward, while the bottom inclined surface extends downward and tilts inward.

[0083] The elastic return component includes a connecting block 412 and a spring 413. The connecting block 412 connects to the inner sides of the three push rods 41. The spring 413 is a compression spring, with its bottom secured to the connecting block 412. The connecting block 412 slides vertically within the connecting block through-hole 18 of the base 1. The top of the spring 413 presses against the base 1, exerting a downward elastic force on the connecting block 412 and push rods 41, driving the push rods 41 downward.

[0084] The connecting ring 5 is sleeved on the reduced diameter section 11 of the base 1. The connecting ring 5 is connected to the cleaning parts of the three cleaning units 3 at the same time. When the connecting ring 5 moves upward, it can drive the three cleaning parts to move upward at the same time, and the cleaning parts pull the articulated arm 31 back into the accommodating groove 15.

[0085] The connecting ring elastic member 6 is fixed between the connecting ring 5 and the base 1. Specifically, the connecting ring elastic member 6 is a tension spring. The lower end of the connecting ring elastic member 6 is fixed on the connecting ring 5, and the upper end is fixed on the top surface of the reduced diameter section 11 in the base 1. The connecting ring elastic member 6 applies an upward elastic force to the connecting ring 5, but its elastic force is small and only plays an auxiliary pulling role. Its elastic force is not enough to overcome the elastic force of the articulated arm elastic member.

[0086] Usage process: In the initial state, the connecting ring 5 pulls the cleaning piece upward, driving the articulated arm 31 to retract into the accommodating groove 15; the outer pressure block 36 extends outward under the drive of the pressure block elastic member 38; the push rod 41 extends downward under the drive of the spring 413.

[0087] Insertion stage: The gas cylinder cleaning device is lowered into the gas cylinder 7. During the insertion process, the external pressure block 36 is compressed and squeezes the cleaning element, the internal pressure block 37, and the base 1. The friction between the external pressure block 36 and the bottle mouth 74 is relatively large. At this time, it is necessary to push the base 1 downward so that the external pressure block 36 passes the bottle mouth 74 and enters the gas cylinder 7. After loosening the connecting ring 5, the articulated arm 31 opens downward under the action of the articulated arm elastic member, pulling the cleaning element downward; however, at this time, the cleaning element inside the gas cylinder 7 is straightened. Subsequently, the base 1 is lifted, so that the external pressure block 36 returns to the bottle mouth 74. The external pressure block 36 is compressed and squeezes the cleaning element, the internal pressure block 37, and the base 1 again. Then the base 1 continues to be lifted upward. Since the friction between the outer pressure block 36 and the bottle mouth 74 is large, and the friction between the inner pressure block 37 and the base 1 is small, the base 1 can move upward relative to the cleaning member. When the base 1 moves upward, it drives the articulated arm 31 to move upward. At this time, in the vertical direction, the distance between the articulated arm 31 and the limiting component becomes smaller, while the length of the part of the cleaning member located below the limiting component remains unchanged, so that the elastic sheet 35 and the first flexible cleaning strip 34 have redundant amount to deform outward, and the elastic sheet 35 pushes the first flexible cleaning strip 34 to the top wall 71.

[0088] Top wall 71 cleaning stage: remove the lifting force applied to the base 1, drive the gas cylinder 7 to rotate, and the limiting component positions the upper and lower limits of the gas cylinder cleaning device on the gas cylinder 7. The gas cylinder 7 and the gas cylinder cleaning device can only rotate relative to each other. At the same time, the branch pipe 22 sprays cleaning liquid to clean the top wall 71.

[0089] During the cleaning phase for the side walls 72 and bottom wall 73, the cylinder cleaning device is lowered back into the cylinder 7 until the push rod 41 contacts the bottom wall 73. At this point, the retaining member no longer clamps the cleaning element. As the push rod 41 moves upward, the transmission gear segment 42 engages with the first spur gear 44, which in turn rotates the gear shaft 43. This in turn rotates the first bevel gear 45 and the second bevel gear 46, driving the push plate 33 to a vertical position and pressing the cleaning element against the side walls 72. As the push rod 41 moves upward, the fixing block 47 and the connecting block 412 move upward together, compressing the spring 413. After the fixing block 47 contacts the inclined surface at the bottom of the locking block 48, it drives the locking block 48 outward, compressing the locking block elastic member 49. After the fixing block 47 passes over the locking block 48, the locking block 48 is driven back by the locking block elastic member 49, retaining the fixing block 47 above the locking block 48.

[0090] After the push rod 41 moves upward, the second flexible cleaning strip 32 on the articulated arm 31 contacts the bottom wall 73. When the gas cylinder 7 rotates, the first flexible cleaning strip 34 cleans the side wall 72, and the second flexible cleaning strip 32 cleans the bottom wall 73.

[0091] The cylinder cleaning device then moves upward, and the first flexible cleaning strip 34 continues to clean the sidewall 72. When the unlocking block 411 presses against the top wall 71, it moves inward, driving the locking block 48 outward via the second spur gear 410. The fixed block 47 is no longer restrained by the locking block 48. Under the action of the spring 413, the fixed block 47, the ejector rod 41, and the connecting block 412 move downward, driving the push plate 33 back into the articulated arm 31. The connecting ring 5 is pulled upward, causing the articulated arm 31 to retract into the receiving slot 15.

[0092] Then, the gas cylinder cleaning device is lifted upward, and the limiting component passes through the bottle mouth 74. A large friction force is generated between the external pressure block 36 and the bottle mouth 74. At this time, the lifting force needs to be increased.

[0093] It should be noted that, in actual use, in order to facilitate the timely discharge of the cleaning liquid, the gas cylinder 7 can be placed downward, and the gas cylinder cleaning device can be placed upward into the gas cylinder 7.

[0094] In other embodiments, if the purpose is only to clean the top wall 71, the push plate 33 and the push plate driving mechanism can be eliminated.

[0095] In addition, in the description of this specification, “a plurality of” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A gas cylinder cleaning device, comprising a base extending up and down, characterized in that: The device further comprises at least two cleaning units evenly distributed around the base, wherein the base comprises a cleaning member through-hole extending vertically and corresponding to each cleaning unit, and a receiving groove located on the outside of the base, the receiving groove being in communication with the cleaning member through-hole and being located below the cleaning member through-hole; The cleaning unit includes a cleaning member that is slidably inserted into the through hole of the cleaning member, and also includes a hinged arm and an elastic member of the hinged arm. The inner end of the hinged arm is hinged to the bottom of the receiving groove, and the outer end is connected to the cleaning member. The elastic member of the hinged arm is used to drive the hinged arm to open outward after the hinged arm is inserted into the gas cylinder. The cleaning member includes a flexible cleaning strip and an elastic sheet. The elastic sheet is used to press the flexible cleaning strip outward against the top wall of the gas cylinder. The cleaning unit also includes a limiting component located in the perforation of the cleaning member, the limiting component is used to position the upper and lower limits of the gas cylinder cleaning device at the bottle mouth of the gas cylinder, the limiting component includes an external pressure block and an internal pressure block respectively arranged inside and outside the cleaning member, and a pressure block elastic member pressed between the external pressure block and the internal pressure block, the outer side of the external pressure block has a rubber layer and passes outward from the perforation of the cleaning member, the outer top surface of the external pressure block extends from top to bottom and is arranged inclined outward; when the gas cylinder cleaning device moves upward, the outer top surface of the external pressure block is squeezed by the bottle mouth and moves inward and squeezes the cleaning member, the inner pressure block and the base, after the external pressure block is squeezed by the bottle mouth, the base can be lifted up and move upward relative to the cleaning member.

2. The gas cylinder cleaning device according to claim 1, characterized in that: The outer bottom surface of the outer pressure block extends downward from top to bottom and is arranged inclined inward.

3. The gas cylinder cleaning device according to claim 1, characterized in that: The external pressure block includes a pressure plate and a protrusion. The protrusion is arranged in the middle position of the outer side of the pressure plate. The protrusion passes outward from the cleaning member through-hole. A supporting step is provided in the cleaning member through-hole. The pressure plate is supported on the supporting step. After the external pressure block is squeezed by the bottle mouth, the pressure plate moves inward and separates from the supporting step.

4. The gas cylinder cleaning device according to claim 1, 2 or 3, characterized in that: The cleaning unit also includes a push plate, the outer end of which is hinged to the outer end of the hinged arm. The push plate has a vertical state and a retracted state. When the push plate is in the vertical state, the push plate is arranged perpendicular to the hinged arm and presses the cleaning member against the side wall of the gas cylinder. When the push plate is in the retracted state, the push plate is retracted into the hinged arm. The gas cylinder cleaning device also includes a push plate driving mechanism for driving the push plate to swing back and forth.

5. The gas cylinder cleaning device according to claim 4, characterized in that: The push plate driving mechanism includes a push component, a transmission component, a locking component and an elastic reset component. The push component includes a push rod corresponding to each cleaning unit. The push rod is slidably assembled in the base along the up and down direction, and the lower end of the push rod can extend out of the base. The side of the push rod is provided with a transmission tooth segment. The transmission component includes a gear shaft rotatably installed in the articulated arm, a first spur tooth fixed to the inner end of the gear shaft and used to mesh with the transmission tooth segment, a first bevel gear fixed to the outer end of the gear shaft, and a second bevel gear fixedly arranged relative to the push plate. The first bevel gear and the second bevel gear are engaged, and the push rod moves downward with the base and presses against the bottom wall of the gas cylinder, moves upward and drives the push plate to swing to a vertical state; the locking component is used to lock the push rod when the push plate swings to a vertical state, and the elastic reset component is used to drive the push rod to move downward after the locking component unlocks the push rod.

6. The gas cylinder cleaning device according to claim 5, characterized in that: The locking component includes a fixed block cantilevered in the horizontal direction and fixed to the top of the push rod, and also includes a locking block, a locking block elastic member, a second spur gear and an unlocking block. The locking block and the unlocking block are both slidably assembled in the base in the horizontal direction. The second spur gear is rotatably installed in the base. The inner end of the locking block corresponds to the push rod up and down and the bottom of the inner end has an inclined surface. The bottom of the outer end of the locking block is engaged with the top of the second spur gear. The outer end of the unlocking block extends to the outside of the base and has a sharp angle. The top of the inner end of the unlocking block is engaged with the bottom of the second spur gear. The locking block elastic piece is press-fitted between the locking block and the base body, and applies an inward elastic force to the locking block.

7. The gas cylinder cleaning device according to claim 5, characterized in that: The elastic reset component includes a connecting block connected to each push rod and a spring fixed on the connecting block. The spring is used to press on the base to apply downward elastic force to the connecting block and each push rod.

8. The gas cylinder cleaning device according to claim 1, 2 or 3, characterized in that: A flexible cleaning strip is provided on the side of the articulated arm, and the flexible cleaning strip on the articulated arm is used to contact the bottom wall of the gas cylinder.

9. The gas cylinder cleaning device according to claim 1, 2 or 3, characterized in that: The top of the base has a reduced diameter section, and the gas cylinder cleaning device includes a connecting ring that slides on the reduced diameter section along the up and down directions. The connecting ring is connected to each of the cleaning members to pull the cleaning members upward to drive the articulated arm to swing inward and be received in the accommodating groove.

10. The gas cylinder cleaning device according to claim 9, characterized in that: The gas cylinder cleaning device also includes a connecting ring elastic member, which is arranged on the base and applies an upward elastic force to the connecting ring.

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