Pipe coiling device with sealing structure

Abstract

The utility model discloses a kind of pipe winder with sealing structure, including reel, hose wound in reel inside, fixed in the accommodating cavity of reel outside, the spring in the accommodating cavity of reel inside has, reel inside axis position is fixed with swivel joint, hose is communicated with swivel joint, rotating connector is rotated in swivel joint, connector is outwardly perforated reel and accommodating cavity, connector outer end is fixed with fixed seat, spring one end is buckled with connector, other end is buckled with accommodating cavity inner wall, swivel joint and connector between there is sealing component. Compared with prior art, the utility model has the advantages that traditional sealing ring will appear gap after wearing and tear and cause leakage, the application is inwards contracted by two section control shaft, sealing ring two is extruded, realize the sealing state between connector and swivel joint, even if sealing ring two produces wearing and tear, can also be compensated to a certain extent under pressure, improve sealing, prolong its service life.

Description

Technical Field

[0001] This utility model relates to the field of hose reel technology, and in particular to a hose reel with a sealing structure. Background Technology

[0002] A hose reel is used to neatly wind and store long sections of flexible tubing, such as hoses and cables, onto a compact reel. It features an automatic reset mechanism; when needed, simply pull out the hose—the length is adjustable. After use, release the reel, and the hose will automatically, quickly, and evenly retract under the action of an internal spring. The core component of the hose reel is the rotary joint. This joint is constantly in a state of rotation and friction during operation. Connected to the hose, it transfers liquid into the rotatable tubing. Because the joint is constantly rotating, a sealing ring is needed on its rotating parts to prevent leakage. However, even with a sealing ring, prolonged friction can cause the sealing material to gradually wear down, eventually creating gaps and leading to leakage. Therefore, a component is needed to maintain a relatively tight seal on the rotary joint even under prolonged rotation and friction. Utility Model Content

[0003] In view of the problems mentioned above, the technical problem to be solved by this utility model is to provide a hose reel with a sealing structure.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a hose reel with a sealing structure, including a reel, a hose wound inside the reel, and a receiving cavity fixed on the outside of the reel. The receiving cavity contains a spring. A rotary joint is fixed at the axial position inside the reel. The hose is connected to the rotary joint. A connecting end is rotatably located inside the rotary joint. The connecting end passes through the reel and the receiving cavity. A fixing seat is fixed at the outer end of the connecting end. One end of the spring is fastened to the connecting end, and the other end is fastened to the inner wall of the receiving cavity. A sealing component is provided between the rotary joint and the connecting end. The sealing component includes two control shafts installed in the connecting end, a spring connecting the two control shafts, and two sealing rings located at the ends of the rotary joint. Under the action of the spring, the two control shafts press the sealing rings at the ends of the rotary joint toward the middle position, thereby sealing the rotary joint and the rotating edge of the connecting end.

[0005] A further preferred embodiment of this utility model is: the rotary joint has a channel inside, the inner wall of the channel is provided with at least two transmission cavities, the rotary joint is provided with transmission holes corresponding to the number of transmission cavities, the transmission holes pass through the rotary joint outward, the inner end of the transmission holes communicates with the transmission cavities, and the outer end is connected to the flexible hose. The connecting end is fitted into the rotary joint channel, and its interior has an inner channel corresponding to the number of transmission cavities. The inner channel is connected to each of the respective transmission cavities.

[0006] A further preferred embodiment of this utility model is: the inner wall of the rotary joint channel is further provided with multiple sealing cavities, the sealing cavities being spaced apart from the transmission cavity, so that both ends of the transmission cavity have sealing cavities. The outer wall of the connecting end has an integral protrusion layer corresponding to the number of sealing cavities. The protrusion layer abuts against the inner wall of the rotary joint channel. A sealing ring is installed inside the sealing cavity, and the inner arc surface of the sealing ring is pressed against the protrusion layer.

[0007] A further preferred embodiment of this utility model is that the inner diameter of the sealing ring is smaller than the inner diameter of the rotary joint channel.

[0008] A further preferred embodiment of this utility model is: a control hole is provided at the axis of the connecting end, and two side grooves are provided perpendicularly to the axis of the connecting end on the outer side, and the side grooves are connected to the control hole. The outermost protruding layer has a sealing surface one. Both ends of the rotary joint have a sealing cavity two that is coaxially arranged with the rotary joint channel. The inner wall of the sealing cavity two is the sealing surface two. The sealing surface one and the sealing surface two are flush. The sealing ring two is abutted against the outer side of the sealing surface one and the sealing surface two. The outer wall of the rotary joint near both ends has a side groove two that is connected to the sealing cavity two and is located on the same extension line as the side groove one. Both control shafts are located inside the control hole. The outer walls of both control shafts near the outer end are permeated with side groove three, which extends along with the side groove. A metal plate is detachably installed in the side groove three. Both ends of the metal plate extend outward to push the sealing ring two.

[0009] A further preferred embodiment of this utility model is: the second sealing ring is embedded in the second sealing cavity and abuts against the inner wall of the second sealing cavity.

[0010] A further preferred embodiment of this utility model is as follows: a gasket is attached to the outer side of the sealing ring two, the gasket is used to push the sealing ring two, the outer end face of the gasket is integrally covered with a sheet metal layer, both ends of the metal plate extend outward into the sheet metal layer, and the metal plate and the inner wall of the sheet metal layer are detachably extruded.

[0011] A further preferred embodiment of this utility model is: the width of side groove one is greater than the width of side groove two and side groove three, and the two control shafts move towards the middle under the action of the spring, so that the metal plate can slide in side groove one, and the metal plate pushes the gasket.

[0012] A further preferred embodiment of this utility model is: a pull rope is fixed to the outer end of a control shaft near the outer end. The pull rope is used to stretch the control shaft at the outer end outward when the control shaft at the inner end is limited by the metal plate, so as to engage the control shaft at the outer end with the corresponding metal plate.

[0013] A further preferred embodiment of this utility model is that the pull cord is retractable, pulled out from the control hole when in use, and stored in the control hole when not in use.

[0014] Compared with the prior art, the advantages of this utility model are: 1. Traditional sealing rings will develop gaps and cause leakage after wear. This application uses two control shafts that have an inward contraction effect to squeeze the second sealing ring, so as to achieve a sealed state between the connection end and the rotary joint. Even if the second sealing ring wears, it can be compensated to a certain extent under pressure, thereby improving the sealing performance and extending its service life.

[0015] 2. The sealing ring one ensures a seal between the connection end and the rotary joint, preventing liquid leakage. The sealing ring two further enhances the sealing performance. Even if the sealing ring one leaks, the outer sealing ring two improves the overall sealing reliability.

[0016] 3. By uniformly compressing the second sealing ring with the gasket, the second sealing ring can uniformly compress the first and second sealing surfaces. At the same time, the second sealing ring undergoes local deformation and is compressed against the second sealing cavity, thus compressing the inner and outer ring surfaces of the second sealing ring and improving the sealing degree. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the separation structure of the receiving cavity and the reel in this utility model; Figure 3 This is an exploded view of the reel structure of this utility model; Figure 4 This is a schematic diagram of the connecting end and rotary joint structure of this utility model; Figure 5 This is a half-sectional structural diagram of the connecting end and rotary joint of this utility model; Figure 6 This is a schematic diagram of a half-section of the rotary joint of this utility model; Figure 7 This is a half-section diagram of the connecting end and the sealing component of this utility model; Figure 8 This is a schematic diagram of the sealing component structure of this utility model; Figure 9 This is a schematic diagram of the structure of the sealing ring of this utility model installed inside the rotary joint.

[0019] In the diagram: 1. Reel; 2. Receiving cavity; 3. Spring; 4. Fixing base; 5. Hose; 6. Connecting end; 61. Inner channel; 62. Protruding layer; 63. Sealing surface one; 64. Control hole; 65. Side groove one; 7. Rotary joint; 71. Transmission cavity; 72. Transmission hole; 73. Sealing cavity one; 74. Sealing cavity two; 75. Sealing surface two; 76. Side groove two; 8. Sealing component; 81. Sealing ring one; 82. Control shaft; 83. Spring; 84. Pull rope; 85. Side groove three; 86. Sealing ring two; 87. Gasket; 88. Sheet metal layer; 89. Metal plate. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0021] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0022] This embodiment mainly describes a hose reel with a sealing structure. Please refer to [link / reference]. Figures 1-9 Specifically, as follows: Currently, the rotary joint 7 is constantly rotating during operation, so the rotating part of the rotary joint 7 needs a sealing ring to prevent liquid leakage. However, even with a sealing ring, long-term friction will cause the sealing material to gradually wear down, eventually forming gaps and causing leakage. Based on this, a hose reel with a sealing structure is proposed, including a reel 1, a hose 5 wound inside the reel 1, and a receiving cavity 2 fixed on the outside of the reel 1. The receiving cavity 2 contains a spring 3. The rotary joint 7 is fixed at the axial position inside the reel 1. The hose 5 is connected to the rotary joint 7. A connecting end 6 rotates inside the rotary joint 7. The connecting end 6 extends outward through the reel 1 and the receiving cavity 2. A fixing seat 4 is fixed at the outer end of the connecting end 6. One end of the spring 3 is fastened to the connecting end 6, and the other end is fastened to the inner wall of the receiving cavity 2. A sealing component 8 is provided between the rotary joint 7 and the connecting end 6. The sealing component 8 includes two control shafts 82 disposed in the connecting end 6, a spring 83 connecting the two control shafts 82, and sealing rings 86 located at the ends of the rotary joint 7. Under the action of the spring 83, the two control shafts 82 press the sealing rings 86 at the ends of the rotary joint 7 toward the middle position, thereby sealing the rotating edges of the rotary joint 7 and the connecting end 6.

[0023] Specifically, the reel 1, receiving cavity 2, spring 3, hose 5, connecting end 6, and rotary joint 7 are all existing technologies. The spring 3 controls the reel 1 to reset. The fixing seat 4 is used to fix it to the external equipment and fix the connecting end 6. The reel 1 and the rotary joint 7 inside it are in a rotatable state, so that the connecting end 6 and the rotary joint 7 are in a rotating state. The sealing component 8 is installed between the rotary joint 7 and the connecting end 6 to keep them in a sealed state.

[0024] like Figures 5-7 As shown, the rotary joint 7 has a channel inside, and at least two transmission cavities 71 are formed on the inner wall of the channel. The rotary joint 7 has transmission holes 72 corresponding to the number of transmission cavities 71. The transmission holes 72 pass through the rotary joint 7 outward. The inner end of the transmission hole 72 communicates with the transmission cavity 71, and the outer end is connected to the hose 5. The connecting end 6 is sleeved inside the channel of the rotary joint 7, and its interior has an inner channel 61 corresponding to the number of transmission cavities 71. The inner channel 61 is connected to its respective transmission cavity 71.

[0025] Specifically, the outer end of the inner channel 61 in the connection end 6 is connected to the pipe for transmitting liquid, and the inner end is connected to the transmission chamber 71. The transmission chamber 71 is then connected to the hose 5 through the transmission hole 72 to transmit the liquid.

[0026] like Figures 6-9 As shown, the inner wall of the rotary joint 7 channel is also provided with multiple sealing cavities 73, which are distributed at intervals with the transmission cavity 71, so that both ends of the transmission cavity 71 have sealing cavities 73. The outer wall of the connecting end 6 has an integral protrusion layer 62 corresponding to the number of sealing cavities 73. The protrusion layer 62 abuts against the inner wall of the channel of the rotary joint 7. A sealing ring 81 is installed inside the sealing cavity 73. The arc-shaped surface of the sealing ring 81 is pressed against the protrusion layer 62.

[0027] Specifically, a sealing ring 81 is installed in the sealing cavity 73 on the inner wall of the rotary joint 7 channel. The sealing ring 81 is pressed against the protruding layer 62 on the outer wall of the connecting end 6, achieving the first step of sealing and preventing the liquid in the transmission cavity 71 from overflowing. It should be noted that since the rotary joint 7 is fixed inside the reel 1, and the connecting end 6 abuts against the reel 1, there will be no misalignment between the rotary joint 7 and the connecting end 6.

[0028] like Figure 9 As shown, the inner diameter of the sealing ring 81 is smaller than the inner diameter of the rotary joint 7 channel. Specifically, after the sealing ring 81 is installed in the sealing cavity 73, the arc-shaped inner wall of the sealing ring 81 protrudes from the sealing cavity 73 to ensure compression with the protruding layer 62.

[0029] like Figures 6-8As shown, a control hole 64 is provided at the axis of the connecting end 6, and two side grooves 65 are provided perpendicularly to the axis of the connecting end 6. The side grooves 65 are connected to the control hole 64. The outermost protruding layer 62 has a sealing surface 63 on its outer end face. Both ends of the rotary joint 7 are provided with sealing cavities 74 coaxially arranged with the channel of the rotary joint 7. The inner wall of the sealing cavity 74 is a sealing surface 75. The sealing surface 63 and the sealing surface 75 are flush. The sealing ring 86 abuts against the outer side of the sealing surface 63 and the sealing surface 75. The outer wall of the rotary joint 7 near both ends is provided with side grooves 76. The side grooves 76 are connected to the sealing cavity 74 and are located on the same extension line as the side grooves 65. Both control shafts 82 are located inside the control hole 64. The outer walls of both control shafts 82 near their outer ends are permeated by side grooves 85 extending along the same line as side groove 65. A metal plate 89 is detachably mounted inside side groove 85. Both ends of the metal plate 89 extend outward to push the sealing ring 86.

[0030] Specifically, the control hole 64 of the connecting end 6 is used to install two control shafts 82. Side groove 1 65 is a channel for the extension of metal plate 89. Metal plate 89 passes through side groove 1 65 and also through side groove 3 85 on control shaft 82. Metal plate 89 is locked in side groove 3 85. Metal plate 89 can slide partially along side groove 1 65, causing control shaft 82 to move accordingly. Therefore, through the action of spring 83, the two control shafts 82 are pulled towards the middle position, so that the metal plates 89 on both sides have a driving force to move closer to the middle, which is used to squeeze gasket 87, so that gasket 87 squeezes sealing ring 2 86. It should be noted that side groove 2 76 is an installation channel for metal plate 89 and is only used for the removal and placement of metal plate 89. After installation, the two ends of metal plate 89 are located in sheet metal layer 88 to avoid affecting the rotation of rotary joint 7.

[0031] The sealing ring 2 86 is embedded in the sealing cavity 2 74 and abuts against the inner wall of the sealing cavity 2 74. Specifically, the sealing ring 2 86 is made of rubber. After abutting against the inner wall of the sealing cavity 2 74, under the squeezing action of the outer gasket 87, the sealing ring 2 86 can undergo local deformation, filling the gap and further improving the sealing degree.

[0032] like Figure 8 As shown, a gasket 87 is attached to the outer side of the sealing ring 2 86. The gasket 87 is used to push the sealing ring 2 86. A sheet metal layer 88 is integrally formed on the outer end face of the gasket 87. Both ends of the metal plate 89 extend outward into the sheet metal layer 88. The metal plate 89 and the inner wall of the sheet metal layer 88 are detachably extruded.

[0033] Specifically, gasket 87 is made of metal and is pressed against sealing ring 86, causing the entire outer surface of sealing ring 86 to be compressed, ensuring that sealing ring 86 is in a better sealing state.

[0034] like Figures 6-8 As shown, the width of side groove 1 65 is greater than the width of side groove 2 76 and side groove 3 85. The two control shafts 82 move towards the middle under the action of spring 83, so that the metal plate 89 can slide in side groove 1 65, and the metal plate 89 pushes the gasket 87.

[0035] Specifically, the metal plate 89 can slide within the side groove 65 because after the sealing ring 86 wears down, the metal plate 89 slides a short distance along the side groove 65 under the pushing action of the spring 83, ensuring that the sealing ring 86 is pressed against the sealing surface 63 and the sealing surface 75. The side groove 76 is a buckle for taking the metal plate 89 out of the box, and the side groove 85 is used to clamp the metal plate 89.

[0036] like Figure 8 As shown, a pull rope 84 is fixed to the outer end of a control shaft 82 near the outer end. The pull rope 84 is used to pull the outer control shaft 82 outward when the inner control shaft 82 is limited by the metal plate 89, so as to make the outer control shaft 82 cooperate with the corresponding metal plate 89.

[0037] Specifically, the function of the pull rope 84 is that when one section of the control shaft 82 is limited by the metal plate 89, it is necessary to limit the other section of the control shaft 82 to the metal plate 89. Under the restoring action of the spring 83, the side groove 3 85 of the other section of the control shaft 82 does not engage with the side groove 1 65. It is necessary to stretch the other section of the control shaft 82 so that the side groove 3 85 engages with the side groove 1 65. The pull cord 84 is retractable. When in use, it can be pulled out from the control hole 64 and stored in the control hole 64 when not in use.

[0038] Working principle: When the hose 5 in the reel 1 is stretched, the connecting end 6 is in a fixed state, and its internal channel 61 is connected to the external pipe. The rotary joint 7 is in a rotatable state. The rotary joint 7 is connected to the hose 5 through the transmission hole 72, so that the hose 5 is stretched while the reel 1 is rotating, and at the same time, the hose 5 can transport liquid.

[0039] When the reel 1 rotates, the rotary joint 7 also rotates. Therefore, the rotating connection between the rotary joint 7 and the connecting end 6 is prone to gradual wear of the sealing material. To address this, two control shafts 82 are controlled by springs 83 to move towards the center, causing the metal plates 89 on both sides to press their respective gaskets 87. This causes the second sealing ring 86 to press against the second sealing surface 75 and the first sealing surface 63, achieving a seal between the rotary joint 7 and the connecting end 6. It's important to note that even if the second sealing ring 86 experiences localized wear during rotation between the second sealing surface 75 and the first sealing surface 63, the pressure from the gaskets 87 will push the second sealing ring 86 back, compensating for the localized wear and preventing leakage even after prolonged use. It should be noted that because the second sealing surface 75 is rotating, the contact point between the second sealing ring 86 and it is prone to wear. However, the second sealing ring 86 is made of rubber and deforms under the pressure of the gaskets 87, thus still sealing the second sealing surface 75 within the first sealing surface 63.

[0040] During the installation of the sealing component 8, the sealing ring 81 is first installed in the sealing cavity 73, and then the connecting end 6 is sleeved with the rotary joint 7. The protruding layer 62 is pressed against the sealing ring 81 to complete the first step of sealing. Next, insert the two control shafts 82 into the control holes 64. The corresponding sealing rings 86 and gaskets 87 are pre-fitted into the sealing cavities 74 at both ends of the rotary joint 7. Then, insert a metal plate 89 from one side groove 76 and fit it into the side groove 85. The two ends of the metal plate 89 are located within the sheet metal layers 88 on both sides, securing the sheet metal layers 88. It should be noted that the metal plate 89 can move within the side groove 65. Since one control shaft 82 is limited, the other can be pulled by the pull rope 84, stretching the spring 83. Then, the other control shaft 82 is also limited by the metal plate 89 in the same way, giving the sealing rings 86 and gaskets 87 on both sides a driving force to move towards the center, compressing the sealing surfaces 75 and 63 for easy installation. When removing the metal plate 89, use external equipment to extend into the side groove 76 and push the metal plate 89 out.

[0041] It should be noted that the sealing ring 2 86 is embedded in the sealing cavity 2 74, and the inner arc surface of the sealing ring 2 86 is pressed against the outer wall of the connecting end 6. Both the inner and outer arc surfaces of the sealing ring 2 86 are compressed, which improves the sealing degree.

[0042] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] The above provides a detailed description of a hose reel with a sealing structure provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand this utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A hose reel with a sealed structure, comprising a reel, a flexible hose wound inside the reel, and a receiving cavity fixed to the outside of the reel, a spring-loaded spring inside the receiving cavity, a rotary joint fixed at the axial position inside the reel, the flexible hose communicating with the rotary joint, a connecting end rotatably located inside the rotary joint, the connecting end extending outward through the reel and the receiving cavity, a fixing seat fixed to the outer end of the connecting end, one end of the spring-loaded spring engaging with the connecting end, and the other end engaging with the inner wall of the receiving cavity, characterized in that... A sealing component is provided between the rotary joint and the connecting end; The sealing component includes two control shafts installed in the connecting end, a spring connecting the two control shafts, and two sealing rings located at the ends of the rotary joint. Under the action of the spring, the two control shafts press the sealing rings at the ends of the rotary joint toward the middle position, thereby sealing the rotary joint and the rotating edge of the connecting end.

2. The hose reel with a sealing structure according to claim 1, characterized in that, The rotary joint has a channel inside, and at least two transmission cavities are formed on the inner wall of the channel. The rotary joint has transmission holes corresponding to the number of transmission cavities. The transmission holes pass through the rotary joint outward, with the inner end of the transmission hole communicating with the transmission cavity and the outer end connected to the hose. The connecting end is fitted into the rotary joint channel, and its interior has an inner channel corresponding to the number of transmission cavities. The inner channel is connected to each of the respective transmission cavities.

3. The hose reel with a sealing structure according to claim 2, characterized in that, The inner wall of the rotary joint channel is also provided with multiple sealing cavities, which are distributed at intervals with the transmission cavity, so that both ends of the transmission cavity have sealing cavities. The outer wall of the connecting end has an integral protrusion layer corresponding to the number of sealing cavities. The protrusion layer abuts against the inner wall of the rotary joint channel. A sealing ring is installed inside the sealing cavity, and the inner arc surface of the sealing ring is pressed against the protrusion layer.

4. The hose reel with a sealing structure according to claim 3, characterized in that, The inner diameter of the sealing ring is smaller than the inner diameter of the rotary joint channel.

5. The hose reel with a sealing structure according to claim 3, characterized in that, A control hole is provided at the axis of the connecting end, and two side grooves are provided on the outer side of the connecting end perpendicular to its axis. The side grooves are connected to the control hole. The outermost protruding layer has a sealing surface one. Both ends of the rotary joint have a sealing cavity two that is coaxially arranged with the rotary joint channel. The inner wall of the sealing cavity two is the sealing surface two. The sealing surface one and the sealing surface two are flush. The sealing ring two is abutted against the outer side of the sealing surface one and the sealing surface two. The outer wall of the rotary joint near both ends has a side groove two that is connected to the sealing cavity two and is located on the same extension line as the side groove one. Both control shafts are located inside the control hole. The outer walls of both control shafts near the outer end are permeated with side groove three, which extends along with the side groove. A metal plate is detachably installed in the side groove three. Both ends of the metal plate extend outward to push the sealing ring two.

6. The hose reel with a sealing structure according to claim 5, characterized in that, The second sealing ring is embedded in the second sealing cavity and abuts against the inner wall of the second sealing cavity.

7. The hose reel with a sealing structure according to claim 5, characterized in that, A gasket is attached to the outer side of the second sealing ring. The gasket is used to push the second sealing ring. The outer end face of the gasket has an integral sheet metal layer. Both ends of the metal plate extend outward into the sheet metal layer. The metal plate and the inner wall of the sheet metal layer are detachably extruded.

8. The hose reel with a sealing structure according to claim 5, characterized in that, The width of side groove one is greater than the width of side groove two and side groove three. The two control shafts move towards the middle under the action of the spring, so that the metal plate can slide in side groove one, and the metal plate pushes the gasket.

9. The hose reel with a sealing structure according to claim 5, characterized in that, A pull rope is fixed to the outer end of a control shaft near the outer end. The pull rope is used to pull the outer control shaft outward when the inner control shaft is limited by the metal plate, so as to match the outer control shaft with the corresponding metal plate.

10. The hose reel with a sealing structure according to claim 9, characterized in that, The pull cord is retractable; it can be pulled out from the control hole when in use and stored inside the control hole when not in use.

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