A spray head and spray can having a cleaning structure

Abstract

The application relates to the field of spraying devices, in particular to a spraying head with a cleaning structure and a spraying can. A cover body is connected to the top of a pressure tank and comprises a hollow shell with an opening on the side close to the pressure tank, a longitudinal channel connected to the shell and matched with a valve rod and a transverse channel. A spraying channel penetrates the side wall of the shell in a first direction, and the transverse channel is in sealed communication with the inside of the longitudinal channel. An inner insertion hole is formed on the longitudinal channel, and an outer insertion hole is formed on the shell. A sliding assembly comprises a sliding rail, a sliding block sliding along the sliding rail and a cleaning cloth connected to the inside of the sliding block. A pushing assembly is in sealed insertion in the outer insertion hole and the inner insertion hole and is inserted into the transverse channel. The pushing assembly comprises a long strip-shaped cleaning needle arranged in the first direction and sliding in the first direction. The sliding block and the cleaning needle slide synchronously, when the cleaning cloth covers the spraying channel, the end of the cleaning needle is inserted into the inside of the spraying channel and is flush with the outer surface of the shell. The inside and the surface of the spraying channel are cleaned at the same time, and the spraying head is prevented from being blocked.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of spray devices, in particular to a spray head with a cleaning structure and a spray can. BACKGROUND

[0002] A spray can includes a pressure can and a spray head. A high-pressure liquid content is sealed in the pressure can. When a valve of the pressure can is opened, the content enters the spray head from a liquid outlet of the pressure can and is sprayed from a nozzle of the spray head, so that the content is released to the outside in a mist form. In order to realize atomization of the content, the content is forced to pass through a small space, i.e. the nozzle, at this time the content is under high pressure and is accelerated rapidly, so that the content is broken into small droplets after being released to the outside environment. Therefore, the inner wall diameter of the nozzle is small. After a spray is completed, part of the content is left on the surface of the nozzle. After the solvent of the content volatilizes, the non-volatile solute is deposited on the surface of the nozzle, which easily blocks the outlet of the nozzle and is not conducive to long-term use of the spray head.

[0003] In the prior art, a spray head cover is arranged adjacent to the outer surface of the spray head. The spray head cover is controllably slid to drive a cleaning cloth strip to slide and rub the outer surface of the spray head, so that the outer surface of the spray head is cleaned. However, in the process of spraying, a small amount of content is attached to the inner wall of the nozzle, and the existing cleaning structure cannot clean the outer wall of the spray head. With deposition of the non-volatile solute, the spray head is easily blocked. SUMMARY

[0004] The present application aims to provide a spray head with a cleaning structure and a spray can, which can clean the surface and the inner wall of the spray head at the same time.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A spray head with a cleaning structure comprises:

[0007] A cover body is detachably connected to a valve rod of a pressure can, comprising a hollow shell, a longitudinal channel and a transverse channel connected to the shell and matched with the valve rod. A spray channel is formed on a side wall of the shell and extends in a first direction. The transverse channel is in sealed communication with the spray channel and the inside of the longitudinal channel. An inner insertion hole is formed on the side of the longitudinal channel away from the transverse channel and in communication with the inside and outside of the longitudinal channel. An outer insertion hole is formed on the shell and in communication with the inside and outside of the shell.

[0008] The pushing assembly is sealingly inserted into the outer insertion hole and the inner insertion hole and partially sleeved in the transverse channel, and the pushing assembly comprises a long strip-shaped cleaning needle arranged along the first direction, the cleaning needle has an insertion end matched with the spray channel, and the cleaning needle is controllably reciprocated between a first position and a second position along the first direction, when the cleaning needle is located at the second position, the cleaning needle is separated from the spray channel, when the cleaning needle moves to the first position along the direction close to the spray channel, the insertion end of the cleaning needle is inserted into the spray channel and flush with the side of the spray channel away from the outer insertion hole.

[0009] The sliding assembly comprises a sliding rail connected to the outer wall of the shell, a sliding block slidingly connected to the sliding rail, and a cleaning cloth connected to the sliding block close to the side of the shell, the sliding block is controllably slid between a position away from the spray channel and a position where the cleaning cloth on the sliding block covers the spray channel, and the sliding block is synchronously slid with the cleaning needle, when the cleaning cloth covers the spray channel, the cleaning needle is located at the first position.

[0010] Optionally, the longitudinal channel extends along a second direction perpendicular to the first direction, and the shell is arranged along the second direction, the transverse channel extends along the first direction, and the spray channel is coaxial with the transverse channel, the outer insertion hole, the inner insertion hole and the cleaning needle.

[0011] Optionally, the pushing assembly further comprises a sleeve, a first end plate and a cleaning spring, the sleeve is arranged along the first direction and has opposite sealing ends and a resisting end, the sleeve passes through the outer insertion hole, and the sealing end of the sleeve is sealingly connected to the inner insertion hole, the first end plate is connected to the inner wall of the sleeve close to the resisting end, and a through hole is formed in the middle part of the first end plate for the cleaning needle to pass through, the cleaning needle is partially sleeved in the sleeve and passes through the through hole, the cleaning needle further comprises a second end plate, the second end plate is configured as a circular plate and coaxial with the insertion end, and is arranged on the side away from the spray channel of the first end plate, and the two ends of the cleaning spring abut between the first end plate and the second end plate.

[0012] Optionally, at least one track hole is formed on the sleeve, the track hole communicates with the resisting end and extends along the first direction, the edge diameter of the first end plate is greater than the outer wall diameter of the sleeve, the first end plate is sleeved on the sleeve through the arc-shaped through hole matched with the resisting end of the sleeve, and the first end plate abuts on one end of the track hole away from the resisting end of the sleeve, the second end plate is sleeved in the sleeve and has a restriction part matched with the track hole, and when the cleaning spring is in a released state, the second end plate is flush with the resisting end of the sleeve.

[0013] Optionally, the pushing assembly further comprises an end cover and a protection plate, the surface of the cleaning needle is partially protruded to form a clamping block, the end cover covers the abutting end of the sleeve, wherein a through hole is formed in the end cover for the clamping block of the cleaning needle to pass through, the side of the end cover away from the spray channel is partially protruded to form at least one sliding rod, the protection plate covers the cleaning needle and rotates freely around the cleaning needle, the protection plate is provided with an arc-shaped rotating track matched with the sliding rod, the sliding rod slides along the rotating track as the rotating track rotates, the surface of the protection plate is further provided with a positioning hole matched with the clamping block of the cleaning needle, and the clamping block is located on the side of the protection plate away from the spray channel when the cleaning spring is in the released state.

[0014] Optionally, the pushing assembly further comprises a blocking plug, the blocking plug is configured in a circular ring shape and the outer edge thereof is configured in a stepped shape, having an inner embedding part and a port part connected with each other, the diameter of the inner embedding part is matched with the inner diameter of the insertion hole and is sealingly covered in the insertion hole, the diameter of the port part is larger than that of the inner embedding part and covers the edge of the insertion hole, and the cleaning needle is sealingly covered in the inner side of the blocking plug, and the sealed end of the sleeve is connected to the side of the blocking plug away from the spray channel.

[0015] Optionally, the cleaning needle comprises a pushing block, a reinforcing section and a matched section coaxially and connected with each other, the diameter of the matched section is smaller than that of the reinforcing section and is matched with the spray channel, the pushing block is connected to one end of the reinforcing section away from the matched section and is arranged outside the cover body, and the diameter of the pushing block is larger than that of the reinforcing section.

[0016] Optionally, the shell is integrally configured in a cylindrical shape, the two sliding rails are parallel to each other and are connected to the outer surface of the shell in a close fit manner, the sliding block comprises a sliding part and a transmission part, the sliding part is configured in a sheet shape and is bent into an arc shape matched with the outer surface of the shell, the transmission part is configured in a circular arc-shaped long strip shape matched with the outer surface of the shell and is fixedly connected to one end of the sliding part away from the sliding part, the pushing assembly further comprises a track frame, a sliding gear rack, an arc-shaped gear rack, a linkage and a gear set, the track frame is connected to the outer surface of the shell and comprises a straight track extending along the first direction and an arc-shaped track coaxial with the shell, the arc-shaped gear rack is slidingly connected to the arc-shaped track and is configured in an arc-shaped long strip shape matched with the shell and connected to one end of the transmission part of the sliding block away from the sliding part, the sliding gear rack is slidingly connected to the straight track and is fixedly connected to the cleaning needle through the linkage, the gear set comprises a plurality of gears meshing with each other and matched with the sliding gear rack and the arc-shaped gear rack, and the sliding gear rack moves towards the direction close to the spray channel, and the gear set drives the sliding block to move towards the direction close to the spray channel.

[0017] Optionally, the spray head with the cleaning structure further comprises a limiting assembly, the limiting assembly comprises a containing cylinder, a telescopic column and a homing spring, the containing cylinder is configured as a hollow cylinder, and an outer wall of the containing cylinder is connected to an outer wall of the shell, a surface of the containing cylinder is formed with a clamping groove in the form of a through hole, the clamping groove comprises a straight portion parallel to the containing cylinder, and a clamping portion connected perpendicularly to one end of the straight portion close to the pressure tank, the telescopic column comprises a supporting rod and a rotating column connected coaxially, a diameter of the rotating column is greater than that of the supporting rod, and the rotating column is fitted to an inner wall of the containing cylinder and is sleeved in the containing cylinder, a surface of the rotating column is protruded to form a limiting rod fitted to the clamping groove, the supporting rod is connected to one end of the rotating column close to the pressure tank, and the supporting rod abuts against the pressure tank, the homing spring is sleeved outside the supporting rod and abuts between the inner wall of the containing cylinder and the rotating column, when the limiting rod slides into the clamping portion, a gap is formed between the shell and the pressure tank.

[0018] The present application further provides a spray can comprising the spray head with the cleaning structure and the pressure tank.

[0019] The present application has the advantages that the insertion end of the cleaning needle is fitted to the spray channel, when cleaning, the insertion end of the cleaning needle is inserted into the spray channel to push the remaining content in the spray channel out, at the same time, the cleaning cloth slides to the position corresponding to the surface of the nozzle away from the inner insertion hole with the sliding block, the cleaning cloth is attached to the nozzle to absorb the liquid content, thereby realizing the synchronous cleaning of the surface of the nozzle and the spray channel to prevent the blockage in the spray channel. Even if the spray channel has been blocked, the solid material deposited in the spray channel is pushed out by the cleaning needle and is wiped by the cleaning cloth at the same time, which can make the spray channel unblocked again and help to prolong the service life of the nozzle.

[0020] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application and can be implemented according to the content of the specification, the following is a preferred embodiment of the present application and is described in detail below with the help of the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a structure schematic diagram of a spray can according to an embodiment of the present application;

[0022] Figure 2 FIG. 2 is a structure schematic diagram of a spray head according to an embodiment of the present application;

[0023] Figure 3 FIG. 3 is a cross-sectional structure schematic diagram of the spray head according to an embodiment of the present application;

[0024] Figure 4 FIG. 4 is a structure schematic diagram of a pushing assembly and a linkage according to an embodiment of the present application;

[0025] Figure 5 For Figure 2 Enlarged view at A in Fig. 1;

[0026] Figure 6 For the partial cross-sectional structure schematic view of the limiting assembly shown in embodiment one of the present application.

[0027] Legend: 1 - pressure tank, 11 - mounting surface, 12 - valve stem, 2 - nozzle, 3 - cover body, 31 - shell, 311 - outer insertion hole, 312 - spray channel, 313 - pressing plate, 314 - anti-skid pattern, 32 - longitudinal channel, 321 - inner insertion hole, 33 - transverse channel, 4 - pushing assembly, 41 - cleaning needle, 411 - fitting section, 412 - insertion end, 413 - reinforcing section, 414 - push block, 415 - clamping block, 416 - second end plate, 417 - constraint part, 42 - sleeve, 421 - sealing end, 422 - abutting end, 423 - blocking plug, 424 - track hole, 425 - fixing cover, 43 - first end plate, 431 - embedded hole, 44 - cleaning spring, 441 - first buffer ring, 45 - end cover, 451 - screw cover, 452 - extension, 453 - sliding rod, 46 - protection plate, 461 - turning rail, 462 - alignment hole, 5 - sliding assembly, 51 - sliding rail, 52 - sliding block, 521 - sliding part, 522 - transmission part, 53 - cleaning cloth, 54 - track frame, 541 - straight rail, 542 - arc rail, 543 - mounting table, 55 - sliding rack, 56 - arc rack, 57 - gear set, 571 - first gear, 572 - second gear, 58 - linkage, 581 - pushing end, 582 - sliding end, 6 - limiting assembly, 61 - accommodating cylinder, 611 - clamping groove, 612 - straight section, 613 - clamping part, 62 - telescopic column, 621 - turning column, 622 - limiting rod, 623 - supporting rod, 63 - homing spring, 631 - second buffer ring. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0032] The application discloses a nozzle with a cleaning structure, which comprises a cover 3, a pushing assembly 4 and a sliding assembly 5. The cover 3 is detachably connected to a valve rod 12 of a pressure tank 1, and comprises a hollow shell 31, a longitudinal channel 32 and a transverse channel 33. The shell 31 is provided with a spraying channel 312 extending in a first direction and communicating between the inside and outside of the shell 31, the transverse channel 33 communicates with the spraying channel 312 and the inside of the longitudinal channel 32, and the spraying channel 312 is in airtight connection with the transverse channel 33. The longitudinal channel 32 is provided with an inner insertion hole 321 extending in a direction away from the transverse channel 33 and communicating between the inside and outside of the longitudinal channel 32, and the shell 31 is provided with an outer insertion hole 311 communicating between the inside and outside of the shell 31. The nozzle comprises the spraying channel 312 extending in the first direction, and the spraying channel 312 is in airtight connection with the transverse channel 33. The pushing assembly 4 is sealingly inserted into the outer insertion hole 311 and the inner insertion hole 321, and partially sleeved in the transverse channel 33. The pushing assembly 4 comprises a long strip-shaped cleaning needle 41 arranged in the first direction. The cleaning needle 41 is provided with an insertion end 412 matched with the spraying channel 312, and is controllably reciprocated between a first position and a second position in the first direction. When the cleaning needle 41 is located at the second position, the cleaning needle 41 is separated from the nozzle, and when the cleaning needle 41 moves to the first position in a direction close to the nozzle, the insertion end 412 of the cleaning needle 41 is inserted into the spraying channel 312 and is flush with the side of the nozzle away from the outer insertion hole 311. The sliding assembly 5 comprises a sliding rail 51 connected to the outer wall of the shell 31, a sliding block 52 slidingly connected to the sliding rail 51 and a cleaning cloth 53 connected to the sliding block 52 and close to the side of the shell 31. The sliding block 52 is controllably slid between a position away from the nozzle and a position where the cleaning cloth 53 covers the nozzle. The sliding block 52 is synchronously slid with the cleaning needle 41, and when the cleaning cloth 53 covers the nozzle, the cleaning needle 41 is located at the first position.

[0033] The insertion end 412 of the cleaning needle 41 is matched with the spraying channel 312, and when cleaning is performed, the insertion end 412 of the cleaning needle 41 is inserted into the spraying channel 312, and the remaining content in the spraying channel 312 is pushed out of the spraying channel 312, at the same time, the cleaning cloth 53 is slid to a position corresponding to the surface of the nozzle away from the inner insertion hole 321 with the sliding block 52, the cleaning cloth 53 is attached to the nozzle and absorbs the liquid content, so that the surface of the nozzle and the spraying channel 312 are synchronously cleaned, and the spraying channel 312 is prevented from being blocked. Even if the spraying channel 312 is blocked, the solid substances deposited in the spraying channel 312 are pushed out by the cleaning needle 41 and are wiped by the cleaning cloth 53 at the same time, so that the spraying channel 312 is re-opened, and the service life of the nozzle is prolonged.

[0034] The movement of the cleaning needle 41 and the cleaning cloth 53 is linked in the present application, so that the spray channel 312 is kept unblocked when the operation is simple, the operation is simple and has good cleaning effect, and can adapt to the two cases of the nozzle not being blocked and being blocked. When the cleaning needle 41 is just inserted into the spray channel 312, part of the impurities is pushed out of the spray channel 312 by the cleaning needle 41, at this time the cleaning cloth 53 is still moving, so that the impurities pushed out of the spray channel 312 are not completely attached to the same place of the cleaning cloth 53, but are more evenly spread on the surface of the cleaning cloth 53, which helps to ensure that the cleaning cloth 53 can be used for a long time.

[0035] For details, please refer to the following examples.

[0036] Example one:

[0037] Please refer to Figure 1 The spray tank shown in a preferred embodiment of the present application includes a spray head 2 and a pressure tank 1, which is used for spraying automobile self-spraying paint.

[0038] The pressure tank 1 is integrally constructed as a vertically arranged cylindrical shape, and has a horizontal mounting surface 11 at the top. A liquid outlet valve is mounted at the center of the mounting surface 11 and penetrates the mounting surface 11. The liquid outlet valve includes a vertically arranged cylindrical valve rod 12, and the top end of the valve rod 12 is a hollow liquid outlet. The pressure tank 1 is a sealed structure, and the liquid outlet valve is normally closed. When the valve rod 12 is pressed downward, the liquid outlet valve is opened, and the contents contained in the pressure tank 1 flow out of the liquid outlet. Since the specific structure of the liquid outlet valve is prior art, it is not described in detail here. The spray head 2 is detachably connected to the valve rod 12. When the spray head 2 is pressed downward, it drives the valve rod 12 to move downward together along the vertical direction, so as to open the liquid outlet valve.

[0039] Please refer to Figure 2 and Figure 3 The spray head 2 includes a cover body 3, a pushing assembly 4 and a sliding assembly 5. The pushing assembly 4 is partially embeddedly connected inside the cover body 3, and the sliding assembly 5 is connected to the surface of the cover body 3.

[0040] The cover 3 comprises a shell 31, a longitudinal channel 32 and a transverse channel 33. The shell 31 is integrally configured as a hollow cylinder with an open bottom. A spray channel 312 is formed on the sidewall of the shell 31 and extends in a first direction, which is a horizontal direction. The longitudinal channel 32 is disposed inside the shell 31 in a second direction, which is a vertical direction. One end of the longitudinal channel 32 is connected to the inner wall of the top of the shell 31, and the other end is flush with the bottom of the shell 31 and is sealingly and detachably sleeved on the valve stem 12, so that the inside of the longitudinal channel 32 is in communication with the liquid outlet. The transverse channel 33 is disposed in the first direction and coaxial with the spray channel 312. One end of the transverse channel 33 is sealingly connected to the inner wall of the shell 31, and the other end is connected to the corresponding position of the longitudinal channel 32 and extends into the inside of the longitudinal channel 32, so that the spray channel 312 and the longitudinal channel 32 are sealingly communicated. The inner wall diameter of the transverse channel 33 is greater than that of the spray channel 312. The longitudinal channel 32 is formed with an inner insertion hole 321, and the shell 31 is formed with an outer insertion hole 311. The inner insertion hole 321 and the outer insertion hole 311 are coaxial with the transverse channel 33 and are located on the side of the transverse channel 33 away from the spray channel 312. In this embodiment, the inner insertion hole 321 and the outer insertion hole 311 are both configured as a circular tube and protrude outward from the longitudinal channel 32 and the shell 31, respectively.

[0041] In this embodiment, the spray channel 312 is directly formed on the sidewall of the shell 31. In other embodiments, the spray channel 312 can be formed on a nozzle embedded in the sidewall of the shell 31.

[0042] Please refer to Figure 2 , Figure 3 and Figure 4 , the pushing assembly 4 comprises a cleaning needle 41, a sleeve 42, a first end plate 43 connected between the cleaning needle 41 and the sleeve 42, a cleaning spring 44, an end cap 45 and a protection plate 46. The pushing assembly 4 is detachably connected to the shell 31, and each component is easy to install and disassemble, so that the whole pushing assembly 4 is easy to maintain.

[0043] The cleaning needle 41 is disposed in the first direction and comprises a push block 414, a reinforcing section 413 and a matching section 411 which are coaxial and connected to each other. The reinforcing section 413 is connected between the push block 414 and the matching section 411, and its diameter is greater than that of the matching section 411 and smaller than that of the push block 414. The push block 414 has a small length in the first direction, which is used to push the whole cleaning needle 41 to slide in the first direction. The diameter of the matching section 411 is matched with the spray channel 312, and the end of the matching section 411 away from the reinforcing section 413 is an insertion end 412 of the cleaning needle 41. The shape of the insertion end 412 of the cleaning needle 41 is matched with the outer wall of the shell 31. The insertion end 412 of the cleaning needle 41 is made of a material that does not absorb water. In this embodiment, the whole cleaning needle 41 is made of stainless steel. In other embodiments, the insertion end 412 of the cleaning needle 41 can be made of hard plastic or adhere to flexible silica gel.

[0044] The sleeve 42 is integrally configured as a hollow cylindrical structure with opposite sealing end 421 and abutting end 422. The middle part of the sleeve 42 is connected with a fixing cover 425. The fixing cover 425 is integrally configured as a hollow cover with cylindrical shape and coaxial with the sleeve 42, which is sleeved and connected to the outside of the sleeve 42 and is open at the end close to the sealing end 421. The sealing end 421 of the sleeve 42 is inserted into the inside of the shell 31 from the outer insertion hole 311, and the outer wall of the outer insertion hole 311 and the inner wall of the fixing cover 425 are formed with matching threads. When the fixing cover 425 is locked by threads in the outer insertion hole 311, the sleeve 42 is fixed and detachably connected to the shell 31, and the sealing end 421 of the sleeve 42 is sealingly connected to the inner insertion hole 321 of the shell 31 through the blocking plug 423. The blocking plug 423 is made of rubber material and is integrally configured as a circular ring with a stepped outer edge, having an inner embedding part and a port part connected to each other, and the inner edge is fitted to the reinforcing section 413 of the cleaning needle 41. The diameter of the inner embedding part of the blocking plug 423 is matched to the inner diameter of the inner insertion hole 321, and the inner embedding part is sleeved at the end of the inner insertion hole 321 away from the longitudinal channel 32. The diameter of the port part of the blocking plug 423 is matched to the outer diameter of the inner insertion hole 321, and the side surface close to the inner insertion hole 321 abuts against the end surface of the inner insertion hole 321, and the side surface away from the inner insertion hole 321 is connected to the sealing end 421 of the sleeve 42. The inner wall of the sealing end 421 of the sleeve 42 is protruded inwardly, so that the sealing end 421 of the sleeve 42 is configured as a circular ring with the inner edge fitted to the reinforcing section 413 of the cleaning needle 41. The cleaning needle 41 is inserted into the inside of the sleeve 42, and the reinforcing part is inserted through the through hole of the blocking plug 423 and the sealing end 421 of the sleeve 42, and the fitting section 411 of the cleaning needle 41 is inserted into the transverse channel 33. At this time, under the action of the blocking plug 423, the contents flowing out of the liquid outlet cannot escape through the inner insertion hole 321 to the outside of the transverse channel 33 and the longitudinal channel 32, so that the contents are sprayed out of the spray channel 312 at a high speed.

[0045] The sleeve 42 is formed with two opposite track holes 424 extending in the first direction. The track holes 424 communicate between the inside and outside of the sleeve 42 and are flush with the abutting end 422 of the sleeve 42 at one end. The end of the track holes 424 away from the abutting end 422 of the sleeve 42 is adjacent to the fixing cover 425 and is located at the side of the fixing cover 425 close to the abutting end 422 of the sleeve 42. The first end plate 43 is integrally formed as a circular plate with a diameter larger than the outer wall of the sleeve 42. The first end plate 43 is formed with two circular-arc-shaped through-hole-shaped embedding holes 431 matched with the abutting end 422 of the sleeve 42 and a through hole at the center matched with the reinforcing section 413 of the cleaning needle 41. The first end plate 43 is coaxially sleeved on the abutting end 422 of the sleeve 42 through the embedding holes 431 and is abutted against the end of the track holes 424 adjacent to the fixing cover 425. The reinforcing section 413 of the cleaning needle 41 passes through the through hole on the first end plate 43. The cleaning needle 41 further comprises a second end plate 416. The second end plate 416 is integrally formed as a circular sheet and is connected to and coaxial with the reinforcing section 413. The outer side edge of the second end plate 416 is matched with the inner wall of the sleeve 42. The edge of the second end plate 416 is protruded to form a restraint portion 417 matched with the track holes 424. The restraint portion 417 is slidingly connected to the track holes 424 to facilitate the restraint of the rotation of the cleaning needle 41 when the cleaning needle 41 slides in the first direction. The cleaning spring 44 is sleeved in the sleeve 42 and is sleeved on the outside of the reinforcing section 413 of the cleaning needle 41. The two ends of the cleaning spring 44 are abutted against the first end plate 43 and the second end plate 416 respectively. The cleaning spring 44 comprises a compression spring and a circular-ring-shaped first buffer ring 441 abutted against the two ends of the compression spring. The first buffer ring 441 is sleeved on the reinforcing section 413 of the cleaning needle 41 and is sleeved in the sleeve 42. When the cleaning spring 44 is in the released state, the side of the second end plate 416 away from the first end plate 43 is flush with the abutting end 422 of the sleeve 42. At this time, the cleaning needle 41 is located at the second position. The insertion end 412 of the cleaning needle 41 is located in the transverse channel 33 and is separated from the spray channel 312.

[0046] See Figure 4 and Figure 5The surface of the reinforced section 413 of the cleaning needle 41 is partially protruded to form a rectangular block 415. The end cover 45 comprises a screw cap 451 and an extension 452. The screw cap 451 is integrally configured as a one-side open circular cap with a thread formed on the inner wall. The outer surface of the abutting end 422 of the sleeve 42 is formed with a thread matched with the thread of the screw cap 451, and is detachably connected with the screw cap 451. The middle part of the screw cap 451 is formed with a through hole for the block 415 to pass through. The extension 452 is integrally configured as a two-side open hollow cylinder with the inner wall diameter matched with the outer wall of the sleeve 42, and is fixedly connected at one end to the opening of the screw cap 451. When the screw cap 451 is locked to the abutting end 422 of the sleeve 42, the inner wall of the screw cap 451 abuts against the second end plate 416, and the extension 452 abuts against the first end plate 43, preventing the second end plate 416 from falling off the track hole 424 and the first end plate 43 from sliding. Two bolts are detachably connected to the side of the screw cap 451 away from the protective cover to form two slide rods 453. The protective plate 46 is coaxially sleeved outside the reinforced section 413 of the cleaning needle 41, and is arranged at the side of the screw cap 451 close to the push block 414. The protective plate 46 is freely rotated and slid relative to the reinforced section 413 of the cleaning needle 41, and the surface is formed with two rotation tracks 461 coaxial with the cleaning needle 41, and the two slide rods 453 are slidably connected to the two rotation tracks 461, respectively. The rotation track 461 restricts the rotation of the protective plate 46, and when the cleaning needle 41 slides relative to the sleeve 42, the protective plate 46 slides relative to the cleaning needle 41. The surface of the protective plate 46 is also formed with a positioning hole 462 matched with the block 415 of the cleaning needle 41. When the cleaning needle 41 is in the second position, the block 415 is located at the side of the protective plate 46 close to the push block 414, and is adjacent to the protective plate 46. When the protective plate 46 is rotated to the position where the positioning hole 462 corresponds to the block 415, the push block 414 is pushed to make the cleaning needle 41 as a whole move towards the spray channel 312 in the first direction, at this time, the second end plate 416 slides along the track hole 424, and the cleaning spring 44 is compressed, and at the same time, the insertion end 412 of the cleaning needle 41 gradually inserts into the spray channel 312. When the cleaning needle 41 cannot continue to slide due to abutting against the protective plate 46, the cleaning needle 41 reaches the first position, at this time, the insertion end 412 of the cleaning needle 41 is flush with the outer surface of the shell 31. When the pressure applied to the push block 414 is removed, the cleaning spring 44 rebounds, and the cleaning needle 41 returns to the second position. When the protective plate 46 is rotated to the position where the positioning hole 462 is misaligned with the block 415, the block 415 abuts against the protective plate 46, preventing the cleaning needle 41 from sliding towards the spray channel 312, and preventing the spray channel 312 from being closed due to accidental touch of the push block 414 during spraying.

[0047] See Figure 2 , Figure 3 and Figure 5The sliding assembly 5 comprises a slide rail 51, a slide block 52, a cleaning cloth 53, a track frame 54, a sliding rack 55, an arc-shaped rack 56 and a gear set 57. The slide rail 51 is integrally configured as a horizontal circular arc, coaxial with the shell 31 and fitted to the outer wall of the shell 31. Two mutually parallel slide rails 51 are flush with each other and different in height, fixedly connected to the side of the spray channel 312. The slide block 52 comprises a sliding part 521 and a transmission part 522. The sliding part 521 is configured as a sheet and bent into an arc shape to fit the surface of the shell 31, with the upper and lower edges thereof slidingly connected to the two slide rails 51, respectively. The transmission part 522 is configured as a horizontally extending circular arc-shaped long strip, coaxial with the shell 31, with one end thereof fixedly connected to the side edge of the sliding part 521. The sliding part 521 of the slide block 52 is connected to the surface of the shell 31 near the cleaning cloth 53, which is made of water-absorbing material and used to wipe the surface of the shell 31 near the spray channel 312. The cleaning cloth 53 is connected by adhesion, facilitating replacement. The track frame 54 is connected to the outer wall of the shell 31 and disposed directly below the outer insertion hole 311. The track frame 54 comprises an arc-shaped track 542, a mounting table 543 and a straight track 541. The arc-shaped track 542 is coaxial with the shell 31, with the bottom thereof configured as a circular arc-shaped sheet and fixedly connected to the outer surface of the shell 31, and the two ends thereof bent upward away from the side edge of the shell 31, thereby restraining the structure inside the arc-shaped track 542 from derailing. The middle part of the arc-shaped track 542 extends in the first direction away from the shell 31, forming the mounting table 543. The mounting table 543 comprises two vertical side walls extending in the first direction, and a long strip-shaped through hole extending in the first direction is formed in one side wall of the mounting table 543, i.e., the straight track 541. The arc-shaped rack 56 is configured as a horizontal circular arc coaxial with the shell 31. The teeth of the arc-shaped rack 56 face the mounting table 543, and the side thereof away from the teeth is fitted to the side of the transmission part 522 of the slide block 52 away from the shell 31, so that the arc-shaped rack 56 and the transmission part 522 of the slide block 52 are simultaneously slidingly connected to the arc-shaped track 542. The arc-shaped rack 56 is connected to the end of the transmission part 522 of the slide block 52 away from the sliding part 521, so that the sliding part 521 of the slide block 52 synchronously slides with the sliding of the arc-shaped rack 56. The sliding rack 55 is configured as a long strip extending in the first direction, with the side thereof away from the teeth slidingly connected to the straight track 541 by a matching block structure. The gear set 57 is detachably mounted to the mounting table 543 and comprises a first gear 571 and a second gear 572 meshing with each other, with the first gear 571 meshing with the sliding rack 55 and the second gear 572 meshing with the arc-shaped rack 56. When the sliding rack 55 approaches the shell 31 in the first direction, the cleaning cloth 53 is caused to slide toward the spray channel 312 under the transmission of the gear set 57.

[0048] The sliding assembly 5 further comprises a linkage 58. The linkage 58 has a pushing end 581 and a sliding end 582 with fixed relative positions. The pushing end 581 of the linkage 58 is configured as a circular ring. The reinforcing section 413 of the cleaning needle 41 has a stud with a smaller diameter than the reinforcing section 413 connected to one end away from the fitting section 411. The pushing block 414 has a screw hole formed on the side surface close to the reinforcing section 413 to fit the stud, so that the pushing block 414 is detachably connected to the reinforcing section 413. The pushing end 581 of the linkage 58 fits the stud and is clamped between the reinforcing section 413 and the pushing block 414. The sliding end 582 of the linkage 58 is fixedly connected to the end surface of the sliding rack 55 away from the housing 31 by a bolt. The cleaning needle 41 and the sliding rack 55 are fixedly connected and synchronously slide through the linkage 58. When the cleaning needle 41 is in the first position, the sliding part 521 of the sliding block 52 is flush with the sliding rail 51 at both ends and is away from the spray channel 312. When the cleaning needle 41 is in the second position, the center position of the cleaning cloth 53 corresponds to the spray channel 312. When cleaning the spray channel 312, when the insertion end 412 of the cleaning needle 41 just inserts into the spray channel 312, the edge position of the cleaning cloth 53 covers the spray channel 312, so as to adsorb the content pushed out of the spray channel 312 by the cleaning needle 41. When the cleaning needle 41 reaches the second position, the content in the spray channel 312 is completely pushed out and is more uniformly adsorbed on the cleaning cloth 53, so as to complete the cleaning of the spray channel 312.

[0049] See Figure 1 and Figure 6The nozzle 2 further comprises a limiting assembly 6. The limiting assembly 6 comprises a containing cylinder 61, an extension column 62 and a homing spring 63. The containing cylinder 61 is configured as a hollow cylinder, and the outer wall thereof is connected to the outer wall of the shell 31 and extends along the second direction. The surface of the containing cylinder 61 is formed with a clamping groove 611 in the form of a through hole. The clamping groove 611 comprises a straight portion 612 extending along the second direction, and a clamping portion 613 connected perpendicularly to the straight portion 612 and close to one end of the pressure tank 1. The extension column 62 comprises a supporting rod 623 and a rotating column 621 connected coaxially, and the diameter of the rotating column 621 is greater than that of the supporting rod 623. The rotating column 621 is fitted to the inner wall of the containing cylinder 61 and is sleeved in the containing cylinder 61. The surface of the rotating column 621 is protruded to form a limiting rod 622 fitted to the clamping groove 611. The supporting rod 623 is connected to one end of the rotating column 621 close to the pressure tank 1, and the supporting rod 623 abuts against the pressure tank 1. The homing spring 63 is sleeved outside the supporting rod 623 and abuts between the inner wall of the containing cylinder 61 and the rotating column 621. The homing spring 63 comprises a second buffer ring 631 and another compression spring. The two ends of the compression spring are provided with the second buffer ring 631 in the form of a circular ring, which is sleeved in the containing cylinder 61 and outside the supporting rod 623, for reducing the friction between the compression spring and the containing cylinder 61 and the rotating column 621. When the limiting rod 622 slides into the clamping portion 613, the cover 3 has a gap with the pressure tank 1 and cannot slide along the second direction. By pushing the limiting rod 622 into the straight portion 612, the cover 3 can be moved close to the pressure tank 1 by pressing the cover 3, and at this time, the valve rod 12 is pressed to slide downward, and the liquid outlet is opened. By arranging the limiting assembly 6, the content is prevented from being sprayed out due to accidental touch of the cover 3.

[0050] Please refer to Figure 2 and Figure 3 The shell 31 further comprises a pressing plate 313. The shell 31 extends along the first direction away from the spray channel 312 at the position corresponding to the outer spout, and forms the rectangular pressing plate 313. One end of the pressing plate 313 away from the spray channel 312 is vertically bent downward, and the upper surface of the pressing plate 313 is formed with rough anti-skid lines 314. The anti-skid lines 314 extend to the center of the shell 31. By arranging the pressing plate 313, the force exertion is facilitated when the cover 3 is pressed and the push block 414 is pushed, and the comfort and convenience of use are improved.

[0051] The present application has the advantages that the interior of the spray channel 312 and the surface of the shell 31 around the spray channel 312 can be cleaned simultaneously, the cleaning effect is good, the operation is simple, the present application can be adapted to the two cases that the spray channel 312 has been blocked or has not been blocked, and the present application has good universality. The cleaning structure in the present application is designed precisely, comprises multiple safety measures and has an anti-mis-touch structure, is not prone to failure, and is convenient to disassemble and install and easy to maintain. Therefore, the nozzle 2 and the spray tank with the cleaning structure in the present application have high practicability.

[0052] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as there is no conflict, any combination of the technical features should be considered within the scope of the present disclosure.

[0053] The above-described embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner, but should not be understood as a limitation on the patent scope of the present application. It should be noted that, for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A showerhead having a cleaning structure, characterized by, The utility model relates to a kind of pressure tank and its cleaning device, including: Cap (3), detachably connected to the valve stem (12) of pressure tank (1), including hollow and the side face opening of the shell (31) close to the pressure tank (1), connect with the longitudinal channel (32) and transverse channel (33) of the shell (31) and cooperate in the longitudinal channel (32), the side wall of the shell (31) is formed with the spray channel (312) that communicates inside and outside the shell (31) and extends along the first direction, the transverse channel (33) is sealedly communicated with the spray channel (312) and inside the longitudinal channel (32), the longitudinal channel (32) is formed with the inner plug hole (321) that communicates inside and outside the longitudinal channel (32) in the side far from the transverse channel (33), the shell (31) is formed with the outer plug hole (311) that communicates inside and outside the shell (31); Pushing assembly (4), sealingly inserted in the outer plug hole (311) and the inner plug hole (321), and partially sleeved in the transverse channel (33), the pushing assembly (4) includes strip-shaped cleaning needle (41) arranged along the first direction, the cleaning needle (41) has insertion end (412) cooperated with the spray channel (312), and controllably reciprocates along the first direction between first position and second position, when the cleaning needle (41) is located at the second position, the cleaning needle (41) is separated from the spray channel (312), when the cleaning needle (41) moves to the first position along the direction close to the spray channel (312), the insertion end (412) of the cleaning needle (41) is inserted in the spray channel (312), and is flush with the side of the spray channel (312) far from the outer plug hole (311); Sliding assembly (5), including the slide rail (51) connected to the outer wall of the shell (31), the sliding block (52) slidingly connected to the slide rail (51) and the cleaning cloth (53) connected to the side of the sliding block (52) close to the shell (31), the sliding block (52) controllably slides between the position far from the spray channel (312) and the cleaning cloth (53) on it covers the spray channel (312), and the sliding block (52) synchronously slides with the cleaning needle (41), when the cleaning cloth (53) covers the spray channel (312), the cleaning needle (41) is located at the first position.

2. The showerhead having a cleaning structure of claim 1, wherein, The longitudinal channel (32) extends along the second direction perpendicular to the first direction, and the shell (31) is arranged along the second direction, the transverse channel (33) extends along the first direction, and the spray channel (312) is coaxial with the transverse channel (33), the outer plug hole (311), the inner plug hole (321) and the cleaning needle (41).

3. The showerhead having a cleaning structure of claim 1, wherein, The pushing assembly (4) further comprises a sleeve (42), a first end plate (43) and a cleaning spring (44), the sleeve (42) is arranged along the first direction and has opposite sealing ends (421) and abutting ends (422), the sleeve (42) passes through the outer insertion hole (311) and the sealing end (421) of the sleeve (42) is sealingly connected to the inner insertion hole (321), the first end plate (43) is connected to the inner wall of the sleeve (42) and is adjacent to the abutting end (422), the middle part is formed with a through hole for the cleaning needle (41) to pass through, the cleaning needle (41) is partially sleeved in the sleeve (42) and passes through the through hole, the cleaning needle (41) further comprises a second end plate (416), the second end plate (416) is configured as a circular plate and is coaxial with the insertion end (412), is arranged on the side away from the spray channel (312) of the first end plate (43), and the two ends of the cleaning spring (44) abut between the first end plate (43) and the second end plate (416).

4. The showerhead of claim 3, wherein the cleaning structure comprises a plurality of protrusions. The sleeve (42) is formed with at least one track hole (424) extending along the first direction and communicating with the abutting end (422), the edge diameter of the first end plate (43) is greater than the outer wall diameter of the sleeve (42), the first end plate (43) is sleeved on the sleeve (42) by being fitted in the arc-shaped through hole of the abutting end (422) of the sleeve (42), and the first end plate (43) abuts one end of the track hole (424) away from the abutting end (422) of the sleeve (42), the second end plate (416) is sleeved in the sleeve (42) and has a restriction part (417) fitted in the track hole (424), and when the cleaning spring (44) is in a released state, the second end plate (416) is flush with the abutting end (422) of the sleeve (42).

5. The showerhead of claim 3, wherein the cleaning structure comprises a plurality of protrusions extending from the surface of the showerhead. The pushing assembly (4) further comprises an end cover (45) and a protection plate (46), the surface of the cleaning needle (41) is partially protruded to form a clamping block (415), the end cover (45) is arranged on the abutting end (422) of the sleeve (42) and has a through hole in the middle part for the clamping block (415) of the cleaning needle (41) to pass through, the side of the end cover (45) away from the spray channel (312) is partially protruded to form at least one sliding rod (453), the protection plate (46) is sleeved on the cleaning needle (41) and can freely rotate around the cleaning needle (41), the protection plate (46) is formed with an arc-shaped rotation track (461) fitted in the sliding rod (453), the sliding rod (453) slides in the rotation track (461) with the rotation of the rotation track (461), and the surface of the protection plate (46) is further formed with an alignment hole (462) fitted in the clamping block (415) of the cleaning needle (41), and when the cleaning spring (44) is in a released state, the clamping block (415) is located on the side away from the spray channel (312) of the protection plate (46).

6. The showerhead of claim 3, wherein The push assembly (4) further comprises a blocking plug (423) configured as a circular ring and having a stepped outer edge with an inner fitting portion and a port portion connected to each other, the diameter of the inner fitting portion is matched with the inner diameter of the inner insertion hole (321) and the inner fitting portion is sealingly sleeved in the inner insertion hole (321), the diameter of the port portion is larger than that of the inner fitting portion and the port portion covers the edge of the inner insertion hole (321), the cleaning needle (41) is sealingly sleeved in the inner side of the blocking plug (423), and the sealing end (421) of the sleeve (42) is connected to the side of the blocking plug (423) away from the spray channel (312).

7. The showerhead having a cleaning structure of claim 1, wherein, The cleaning needle (41) comprises a push block (414), a reinforcing section (413) and a matching section (411) coaxially and connected to each other, the diameter of the matching section (411) is smaller than that of the reinforcing section (413) and is matched with the spray channel (312), the push block (414) is connected to one end of the reinforcing section (413) away from the matching section (411) and is arranged outside the cover (3) and has a diameter larger than that of the reinforcing section (413).

8. The showerhead having a cleaning structure of claim 1, wherein, The shell (31) is integrally configured as a circular cylinder, the two slide rails (51) are parallel to each other and are connected to the outer surface of the shell (31) in a close fit, the slide block (52) comprises a sliding portion (521) and a transmission portion (522), the sliding portion (521) is configured as a sheet and is bent into an arc shape matched with the outer surface of the shell (31), the transmission portion (522) is configured as a circular arc long strip matched with the outer surface of the shell (31) and is fixedly connected to one end of the sliding portion (521), the push assembly (4) further comprises a track frame (54), a sliding rack (55), an arc-shaped rack (56), a linkage (58) and a gear set (57), the track frame (54) is connected to the outer surface of the shell (31) and comprises a straight track (541) extending in the first direction and an arc-shaped track (542) coaxial with the shell (31), the arc-shaped rack (56) is slidingly connected to the arc-shaped track (542) and is configured as an arc-shaped long strip matched with the shell (31) and connected to one end of the transmission portion (522) of the slide block (52) away from the sliding portion (521), the sliding rack (55) is slidingly connected to the straight track (541) and is fixed to the cleaning needle (41) through the linkage (58), the gear set (57) comprises a plurality of gears meshing with each other and is matched with and meshingly connected to the sliding rack (55) and the arc-shaped rack (56), when the sliding rack (55) moves towards the direction close to the spray channel (312), the gear set (57) drives the slide block (52) to move towards the direction close to the spray channel (312).

9. The showerhead of claim 1, wherein Further comprising a limiting assembly (6), the limiting assembly (6) comprises a containing cylinder (61), a telescopic column (62) and a homing spring (63), the containing cylinder (61) is configured as a hollow cylinder, and its outer wall is connected to the outer wall of the shell (31), the surface of the containing cylinder (61) is formed with a clamping groove (611) in the form of a through hole, the clamping groove (611) comprises a straight part (612) parallel to the containing cylinder (61), and a clamping part (613) connected perpendicularly to one end of the straight part (612) close to the pressure tank (1), the telescopic column (62) comprises a supporting rod (623) and a rotating column (621) connected coaxially, the diameter of the rotating column (621) is greater than that of the supporting rod (623), and the rotating column (621) is fitted to the inner wall of the containing cylinder (61) and is sleeved in the containing cylinder (61), the surface of the rotating column (621) is protruded to form a limiting rod (622) fitted to the clamping groove (611), the supporting rod (623) is connected to one end of the rotating column (621) close to the pressure tank (1), and the supporting rod (623) abuts against the pressure tank (1), the homing spring (63) is sleeved outside the supporting rod (623) and abuts between the inner wall of the containing cylinder (61) and the rotating column (621), when the limiting rod (622) slides into the clamping part (613), the shell (31) and the pressure tank (1) have a gap therebetween.

10. A spray can characterized by, The nozzle (2) and the pressure tank (1) with the cleaning structure as claimed in any one of claims 1 to 9 are included.

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