CN211726309U

CN211726309U - Universal connector and sprayer system

Info

Publication number: CN211726309U
Application number: CN201922072473.3U
Authority: CN
Inventors: 格雷厄姆·格哈德
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-10-23
Anticipated expiration: 2029-11-27
Also published as: WO2021103870A1

Abstract

The application provides a universal joint and atomizer system, this universal joint includes: a first connecting unit; for attachment to a sprayer body; a first through channel is arranged in the first connecting unit; a second connection unit provided on the first connection unit, the second connection unit including a plurality of connection portions having different specifications from each other; the connecting part can be respectively detachably connected with the matched water tanks; when the connecting part is connected with the matched water tank, the water tank can be communicated with the first through channel; when the connecting part is separated from the matched water tank, the second connecting unit can mutually replace a plurality of connecting parts; the first connecting unit is movably connected with the second connecting unit, and the second connecting unit can rotate relative to the first connecting unit, so that the connecting parts are replaced mutually. The embodiment of the application provides a universal joint and sprayer system that suitability is strong.

Description

Universal connector and sprayer system

Technical Field

The application relates to the technical field of spraying, especially, relate to a universal joint and atomizer system.

Background

Existing sprayer systems include a sprayer body and a water tank. During the use, this atomizer main part needs link to each other with the water tank to make the atomizer main part can carry out the pressure testing to the liquid in the water tank, so that the liquid in the water tank can pass through the nozzle blowout.

However, the sprayer body of the prior sprayer system can be generally connected with only one type of water tank. When a plurality of water tanks need to be used, different sprayer bodies need to be equipped for the models of the various water tanks. Therefore, the use is inconvenient, the working efficiency is low, and the labor cost is high.

Therefore, there is a need for a universal adapter and sprayer system that overcomes the above-mentioned deficiencies.

SUMMERY OF THE UTILITY MODEL

In view of this, this application embodiment provides a general joint and atomizer system that adaptability is strong.

In order to achieve the purpose, the application provides the following technical scheme: a universal joint, comprising: a first connecting unit; for attachment to a sprayer body; a first through channel is arranged in the first connecting unit; the second connecting unit is arranged on the first connecting unit and comprises a plurality of connecting parts with different specifications, and the connecting parts can be respectively detachably connected with the matched water tanks; when the connecting part is connected with the matched water tank, the water tank can be communicated with the first through channel; when the connection part is separated from the water tank adapted thereto, the second connection unit can replace the plurality of connection parts with each other.

As a preferred embodiment, the second connecting unit includes a main body extending lengthwise, and the plurality of connecting portions are sequentially arranged on an outer wall of the main body along the lengthwise extending direction.

As a preferred embodiment, a second through channel extending in the direction of longitudinal extension is provided in the main body; the first connecting unit penetrates through the second through channel, so that the main body is sleeved on the first connecting unit.

In a preferred embodiment, one of the first connecting unit and the second connecting unit is provided with a restricting portion for preventing the second connecting unit from moving relative to the first connecting unit, and the other is provided with a rotation preventing portion for engaging with the restricting portion.

In a preferred embodiment, the connection part has a screw structure to be screwed with the water tank.

As a preferred embodiment, the universal joint further comprises a sealing component, and the sealing component is used for blocking the water tank from being communicated with the outside air flow; the sealing assembly comprises a first sealing member for sealing a gap between the second connection unit and the adapted water tank; a second sealing member for sealing a gap between the second connection unit and the first connection unit.

As a preferred embodiment, the second connection unit includes a main body extending lengthwise, a plurality of blocking portions are further disposed on an outer wall of the main body, each blocking portion is located between adjacent connection portions, and the first sealing member is located between the blocking portion and the connection portion; the blocking part is used for abutting against the first sealing element.

As a preferred embodiment, the first connecting unit includes a first connecting piece and a second connecting piece which are oppositely arranged, and the first connecting piece and the second connecting piece are detachably connected and can respectively abut against two ends of the second connecting unit, so that the second connecting unit can be clamped between the first connecting piece and the second connecting piece; or the first connecting unit comprises a third connecting piece, and the second connecting unit is connected with the third connecting piece through threads.

In a preferred embodiment, a first through hole is formed in the first connecting member, the second connecting member is inserted into the first through hole, and a second through hole is formed in the second connecting member, the second through hole communicating with the first through hole to form the first through passage.

A sprayer system, comprising: a water tank; a sprayer body; a universal joint; the universal joint comprises a first connecting unit; which is connected to the sprayer body; a first through channel is arranged in the first connecting unit; the second connecting unit is arranged on the first connecting unit, a plurality of connecting parts with different specifications are arranged on the second connecting unit, and each connecting part can be detachably connected with the corresponding water tank respectively; when the connecting part is connected with the matched water tank, the water tank can be communicated with the first through channel; when the connection part is separated from the water tank adapted thereto, the second connection unit can replace the plurality of connection parts with each other.

By means of the technical scheme, the universal joint and the sprayer system are provided with the first connecting unit and the second connecting unit, the second connecting unit is provided with the plurality of connecting parts, the specifications of the connecting parts are different from each other, and each connecting part can be detachably connected with the matched water tank respectively; so that the second connection unit can replace a plurality of the connection parts with each other when the connection parts are separated from the fitted water tanks; and when the connecting part is connected with the adaptive water tank, the water tank can be communicated with the first through passage, so that the second connecting unit can mutually replace the connecting parts, so that the water tank can be connected with the adaptive connecting part and the water tank is communicated with the first through passage, namely the second connecting unit can be connected with the water tanks with different specifications through the connecting parts. And the first connection unit can be connected with the sprayer body, so that one sprayer body can be respectively connected with a plurality of water tanks of different models through the connection parts on the second connection unit. So that one sprayer body can be adapted to water tanks of various models. Therefore, the use convenience is improved, the working efficiency is improved, and the labor cost is reduced. Therefore, the embodiment of the application provides a universal joint with strong adaptability and a sprayer system.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for assisting the understanding of the present application, and are not particularly limited to the shapes, the proportional sizes, and the like of the respective members in the present application. Those skilled in the art, having the benefit of the teachings of this application, may select various possible shapes and proportional sizes to implement the present application, depending on the particular situation. In the drawings:

FIG. 1 is an exploded view of a sprayer system according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a universal joint according to an embodiment of the present disclosure;

FIG. 3 is a schematic illustration of a sprayer system according to an embodiment of the present disclosure;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 is a schematic diagram of another sprayer system according to embodiments of the present disclosure.

Description of reference numerals:

10. a first connecting unit; 11. a second connection unit; 15. a connecting portion; 16. a first connection portion; 17. a water tank; 18. a second connecting portion; 19. a second opening; 21. a blocking section; 23. a sprayer body; 25. a first seal member; 27. a second seal member; 29. a fitting portion; 31. a second connecting member; 37. an air pump; 39. a housing; 41. a first connecting member; 43. an air outlet; 45. a first through hole; 47. a first through passage; 49. a second through hole; 51. a diameter expanding section; 53. a reducing section; 55. a first inner tube; 57. a first convex ring; 59. a second convex ring; 61. a first stop surface; 63. a second stop surface; 65. a first opening; 67. a third connecting member; 69. a main body; 71. and a third convex ring.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Please refer to fig. 1 to 5. The application embodiment provides a universal joint, it includes: a first connection unit 10; for connection to the sprayer body 23; and a first through passage 47 is provided in the first connecting unit 10; a second connection unit 11 provided on the first connection unit 10, the second connection unit 11 including a plurality of connection parts 15 having different specifications; the connecting part 15 can be respectively detachably connected with the matched water tanks 17; and when the connecting part 15 is connected with the matched water tank 17, the water tank 17 can be communicated with the first through passage 47; the second connection unit 11 can replace the plurality of connection parts 15 with each other when the connection parts 15 are separated from the adapted water tank 17.

It can be seen from the above scheme that, the universal joint of the embodiment of the present application is provided with the first connection unit 10 and the second connection unit 11, and the second connection unit 11 is provided with the plurality of connection portions 15, the specifications of each connection portion 15 are different from each other, the connection portions 15 can be detachably connected with the water tanks 17 in a matching manner, and the connection portions 15 can replace different water tanks 17 in a matching manner. And the first connection unit 10 can be connected to the sprayer body 23, so that one sprayer body 23 can be connected to a plurality of different models of water tanks 17 through the respective connection portions 15 of the second connection unit 11, respectively. This allows one sprayer body 23 to fit a variety of water tanks 17. Therefore, the use convenience is improved, the working efficiency is improved, and the labor cost is reduced.

In the present embodiment, the sprayer body 23 is used to inject gas into the tank 17, and the gas can apply pressure to the liquid in the tank 17. In particular, the sprayer body 23 may be a manual pump. The manual pump may include a cylinder and a piston disposed within the cylinder. The cylinder is provided with an air outlet 43. In use, an operator can move the piston to inject gas into the tank 17 through the outlet 43. Of course, the sprayer body 23 is not limited to a manual pump, but may be an intelligent pneumatic device. For example, as shown in fig. 3 and 4, the intelligent starting device comprises an air pump 37 and a control mechanism connected with the air pump 37. The air pump 37 can inject air into the water tank 17 through the air outlet 43 thereof by the control of the control mechanism. Therefore, the working efficiency is improved, and the labor intensity is reduced.

Further, as shown in fig. 3 and 4, the intelligent starting device includes a housing 39, and the air pump 37 is disposed in the housing 39. The housing 39 is provided with a second opening 19, and the first connecting unit 10 is fixedly connected with the housing 39 through the second opening 19 so as to communicate the first through passage 47 with the air outlet 43, so that the air pump 37 can inject air into the first through passage 47 through the air outlet 43 and can flow the air into the water tank 17. The connection means may be a screw connection, a bolt connection, a welding, an integral molding, etc., and this application does not intend to be limited thereto.

In the present embodiment, the second connecting unit 11 is provided on the first connecting unit 10. Specifically, the first connection unit 10 is detachably connected to the second connection unit 11. So that the second connection unit 11 can be separated from the first connection unit 10 to replace the connection portion.

In the present embodiment, the second connecting means 11 is provided with a plurality of connecting portions 15 having different specifications. The plurality may be 2, 3, 4, 5, etc., and this application does not intend to be limited thereto. For example, as shown in fig. 4, the number of the connection portions 15 is 2. The specifications of each connecting portion 15 are different from each other; so that each connection portion 15 can be respectively adapted to water tanks 17 of different specifications. I.e. the connection portion 15 of one size can be adapted to the water tank 17 of one size. By replacing the connection portion, one universal joint can be adapted to a plurality of water tanks 17 of different specifications. This improves the fit between the sprayer body 23 and the water tank 17.

Further, the specification is the definition and identification of a product. Therefore, the specification of the connection portion 15 may refer to definition and identification of the connection portion 15. For example, when the connection portion 15 has a threaded structure, the specification of the connection portion 15 is defined as the threaded structure. The definition of the thread structure includes the definition of the thread form, the definition of the nominal diameter, the definition of the number of threads, the definition of the pitch (or lead), and the definition of the direction of rotation. The specifications of each of the connecting portions 15 are different from each other, that is, each of the screw structures is different from each other. And each thread structure may be different from each other, and may have a pitch different from each other. The thread forms of each thread structure may be different from each other. Or the direction of rotation of each thread structure may be different from each other. The number of threads of each thread structure may be different from each other. Or the nominal diameter of each thread structure may be different from each other. The thread form and the thread pitch of each thread structure may be different from each other, and this application does not intend to specify.

Further, the connection portion 15 can be detachably connected to the corresponding water tank 17, and the detachable connection may be, for example, a threaded connection or the like, which is not specified in this application. In the present application, the water tank 17 has a fitting portion 29 fitted to the connecting portion 15, and the fitting portion 29 is provided with a screw structure, and therefore, the connecting portion 15 has a screw structure fitted to the fitting portion 29. Specifically, the matching portion 29 is an internal thread, and the connecting portion 15 is provided with an external thread structure matched with the internal thread.

Further, the water tank 17 has a first opening 65 opened upward. The fitting portion 29 is provided on an inner wall of the first opening 65. The different water tanks 17, that is, the fitting portions 29 of the respective water tanks 17 have different specifications from each other. The specification of the fitting portion 29 may refer to definition and identification of the fitting portion 29.

Further, the water tank 17 includes a bottom wall and a side wall provided around the bottom wall. The bottom and side walls define a reservoir therebetween having the first opening 65. The reservoir chamber is used for storing liquid. The liquid may be water, for example. Of course the liquid is not limited to water. Other liquids are also possible and are not specified in this application. An injection pipe is arranged in the liquid storage cavity. The spray pipe is used for spraying the liquid in a mist shape. So that when the tank 17 is connected to the sprayer body 23 through the first opening 65, the sprayer body 23 can inject gas into the tank 17 through the first opening 65 to cause the liquid in the tank 17 to be sprayed from the spray tube under the pressure.

In one embodiment, the first connection unit 10 includes a first connection member 41 and a second connection member 31 which are oppositely disposed. As shown in fig. 3 and 4, for example, the first connector 41 and the second connector 31 are respectively located on the upper side and the lower side of the second connection unit 11. The first connecting piece 41 and the second connecting piece 31 are detachably connected and can be abutted against two ends of the second connecting unit 11 respectively, so that the second connecting unit 11 can be clamped between the first connecting piece 41 and the second connecting piece 31. Specifically, as shown in fig. 3 and 4, the first connecting member 41 and the second connecting member 31 can abut against the upper end and the lower end of the second connecting unit 11, respectively. So that the first and

second connection members

41 and 31 can be caught with the second connection unit 11. So that when the connecting portion 15 is replaced, the second connecting unit 11 can be changed to replace the connecting portion 15 only by separating the first connecting member 41 from the second connecting member 31. For example, in the present embodiment, the second connection unit may be replaced from bottom to top. For example, the water tank 17 shown in fig. 4 is connected to the lower connection portion 15. When the upper connecting part 15 needs to be used, the positions of the upper connecting part 15 and the lower connecting part 15 can be exchanged by only separating the first connecting part 41 from the second connecting part 31, and then the connecting part 15 is replaced. Of course, not limited thereto, a completely different second connection unit may be substituted.

Further, a first through hole 45 is formed in the first connecting member 41, the second connecting member 31 is inserted into the first through hole 45, a second through hole 49 is formed in the second connecting member 31, and the second through hole 49 is communicated with the first through hole 45 to form a first through passage 47. Specifically, one end of the first connector 41 is used to connect to the sprayer body 23. The other end of the first connector 41 is connected to the second connector 31. For example, as shown in fig. 3 and 4, the first connecting member 41 is located above the second connecting member 31. The upper end of the first connector 41 is adapted to be threadedly coupled to the inner wall of the second opening 19. The lower end of the first connector 41 is adapted to be threadedly coupled to the second connector 31. Further, the first connecting member 41 is formed in a tubular shape having a hollow structure as a whole. The hollow portion forms a first through hole 45 having both ends opened. As shown in fig. 3 and 4, the upper end of the first through hole 45 is connected to the air outlet 43 of the air pump 37.

Specifically, as shown in fig. 3 and 4, the second connecting member 31 has a cylindrical shape having a hollow structure as a whole. The hollow portion forms a second through hole 49. A first internal thread is provided in the first through hole 45 of the first connecting member 41. The outer wall of the second connecting member 31 is provided with a first external thread for fitting with the first internal thread. This allows the second through-hole 49 to communicate with the first through-hole 45. As shown in fig. 3 and 4, the second connector 31 is inserted into the first through hole 45. A first external thread is provided on the outer wall of the upper end of the second connector 31. A first internal thread is provided on the outer wall of the lower end of the first through hole 45.

Further, the first through hole 45 includes an expanded diameter section 51 and a reduced diameter section 53. For example, as shown in fig. 3 and 4, the diameter-reduced section 53 is located above the diameter-increased section 51. The inner wall of the expanding section 51 is provided with an external thread for screwing with the second connecting piece 31. For example, as shown in fig. 3 and 4, the second connecting member 31 is inserted into the enlarged diameter section 51. The inner wall of the lower end of the expanding section 51 is provided with an external thread for screwing with the second connecting piece 31.

Further, a hollow first inner tube 55 is provided in the expanding section 51. The first inner tube 55 is disposed through the second connector 31. The upper end of the first inner tube 55 is connected to the reduced diameter section 53. And first inner tube 55 is in communication with reduced diameter section 53. So that the gas in the reduced diameter section 53 can enter the second through hole 49 of the second connection member 31 more quickly through the first inner tube 55. This improves the efficiency of the air pump 37 in injecting air into the water tank 17.

In one embodiment, the second coupling unit 11 includes a body 69 that extends lengthwise. As shown in fig. 2, 3, and 4, for example, the main body 69 extends in a vertical direction. Specifically, the body 69 is, for example, columnar. The columnar body 69 extends lengthwise. Of course, the main body 69 is not limited to a columnar shape, and may have another shape. Such as a cone, etc., and this application is not limited thereto. Further, a second through passage extending in the lengthwise extending direction is provided in the main body 69. Specifically, the main body 69 is a hollow structure. The hollow portion forms a second through passage open at both ends. For example, as shown in fig. 2, the main body 69 extends in the up-down direction. The second through passage extends in the up-down direction.

Further, the plurality of connecting portions 15 are arranged in order in the longitudinal extending direction on the outer wall of the main body 69. So that the second coupling unit 11 can mutually replace the plurality of coupling portions 15 in the lengthwise extending direction. For example, as shown in fig. 3 and 4, the main body 69 extends in the vertical direction. The number of the connecting portions 15 is two. The two connection portions 15 are arranged on the outer wall of the main body 69 in this order in the up-down direction. I.e. two connecting portions 15, are located at the upper and lower ends of the main body 69, respectively. Specifically, the two connection portions 15 are a first connection portion 16 and a second connection portion 18, respectively. The first connecting portion 16 is located at the lower end of the main body 69. The second connecting portion 18 is located at the upper end of the main body 69. I.e. the first connection 16 is located below the second connection 18. When the first connection portion 16 is fitted with the fitting portion 29 on the water tank 17, the second connection portion 18 can be located above the water tank 17. When the second connection unit 11 replaces the first connection portion 16 and the second connection portion 18 with each other in the up-down direction, the second connection portion 18 is replaced to below the first connection portion 16.

In one embodiment, the first connection unit 10 is inserted into the second through channel, so that the main body 69 is sleeved on the first connection unit 10. As shown in fig. 3 and 4, for example, the first connecting member 41 and the second connecting member 31 are inserted into the second through passage. And the extension direction of the second through channel coincides with the extension direction of the first through channel 47. For example, as shown in fig. 3 and 4, the extending direction of the second through passage and the extending direction of the first through passage 47 are both vertical directions. This enables the second connection unit 11 to be separated from the first connection unit 10 by separating the first connection member 41 from the second connection member 31, thereby enabling the second connection unit 11 to replace the plurality of connection portions 15 with each other.

Further, the outer wall of the first connecting member 41 projects outward in the circumferential direction to form a first convex ring 57. For example, as shown in fig. 3 and 4, the outer wall of the upper end of the first connecting member 41 is outwardly protruded to form a first protruding ring 57. The outer wall of the second connecting member 31 projects outward in the circumferential direction to form a second projecting ring 59. For example, as shown in fig. 3 and 4, the outer wall of the lower end of the second connecting member 31 protrudes outward to form a second protruding ring 59. So that the second male ring 59 is located below the first male ring 57. The first male ring 57 has a first stop surface 61 facing the second male ring 59. As shown in fig. 3 and 4, for example, the first stop surface 61 faces downward. The second male ring 59 has a second stop surface 63 facing the first male ring 57. For example, as shown in fig. 3 and 4, the second stopper surface 63 faces upward. The first and second stop surfaces 61 and 63 respectively abut against both ends of the second connection unit 11. As shown in fig. 3 and 4, for example, the first stop surface 61 abuts against the upper end of the second connection unit 11. The second stop surface 63 abuts against the lower end of the second connection unit 11. So that the second connection unit 11 is located between the first and second stop surfaces 61 and 63. This allows the second connection unit 11 to be engaged with the first connection unit 10.

Further, a plurality of blocking portions 21 are provided on an outer wall of the main body 69. Each barrier 21 is located between adjacent connections 15, each barrier 21 separating the connected connections 15.

Further, the universal joint of the embodiments of the present application further includes a seal assembly. The seal assembly is adapted to block the tank 17 from ambient air flow. The sealing assembly comprises a first sealing member 25, the first sealing member 25 is used for sealing a gap between the second connecting unit 11 and the matched water tank 17; a second sealing member 27, the second sealing member 27 for sealing a gap between the second connection unit 11 and the first connection unit 10.

Further, the first sealing member 25 is plural. The plurality of first seals 25 correspond to the plurality of connection portions 15. Each first seal 25 is provided on the corresponding connection portion 15. Therefore, when the connecting parts 15 are matched with the water tanks 17 with different specifications, the first sealing piece 25 is arranged between each connecting part 15 and the water tank 17, the blocking part 21 tightly supports the first sealing piece 25 between the first sealing piece and the water tank 17, and the sealing performance between the first sealing piece and the water tank is guaranteed. This ensures the tightness between each connection 15 and the tank 17. Specifically, as shown in fig. 3 and 4, the number of the connection portions 15 is two. The number of the first sealing members 25 is two. Each first seal 25 is provided on one of the connection portions 15. So that when each connection 15 is fitted to one water tank 17, each connection 15 is sealed from the water tank 17 by the first sealing member 25. In particular, the first seal 25 may be an O-ring seal. Of course, the first seal 25 is not limited to the O-ring, and may be made of other materials, such as a sealing packing, and the like.

Preferably, one of the first connection unit 10 and the second connection unit 11 is provided with a restriction portion for preventing the second connection unit 11 from moving relative to the first connection unit 10, and the other is provided with a rotation prevention portion for cooperating with the restriction portion. Thereby securing the connection between the first connection unit 10 and the second connection unit. For example, when the water tank 17 is rotated, the limiting portion can limit the second connection unit 11 to rotate relative to the first connection unit 10, that is, when the water tank 17 is rotated, the second connection unit 11 and the first connection unit 10 do not rotate, so that the thread structure on the second connection unit 11 can be disengaged from the matching portion 29 in the water tank 17. Further, the fitting may be such that the rotation preventing portion and the restricting portion can be fitted in shape and size. Specifically, one of the limiting part and the rotation preventing part is a groove, and the other is a protrusion. For example, the restriction may be a groove. The rotation preventing part is a bulge. It is of course also possible for the limiting portion to be a projection. The rotation-preventing part is a groove. This application is not intended to be limited thereto.

Further, the gap between the first connector 41 and the second connector 31 can be sealed by the second seal 27 to prevent the fluid from flowing out of the gap. In particular, the second seal 27 may be an O-ring seal. Of course, the second seal 27 is not limited to the O-ring, and may be made of other materials, such as a sealing filler, and the like.

In one embodiment, the first connection unit 10 includes only the third connection 67. Specifically, as shown in fig. 5, the third connector 67 is provided on the upper side of the second connection unit 11. The end of the third connector 67 facing away from the second connector unit 11 is intended to be connected to the sprayer body 23, which may be a threaded connection, welding or the like. The third connecting member 67 is provided at an end near the second connecting unit 11 for connecting with the second connecting unit 11. The lower end of the third connecting member 67 is screwed with the inner wall of the second through passage, as shown in fig. 5, for example. Specifically, the third connecting member 67 is inserted into the second through passage. The third connecting piece 67 is provided with an internal thread extending into the outer wall of the second through passage for screw-connection with the inner wall of the second through passage.

Specifically, the third connecting member 67 has a cylindrical shape of a hollow structure as a whole. The hollow portion forms a first through passage 47 open at both ends. As shown in fig. 5, the upper end of the first through passage 47 is connected to the air outlet 43 of the air pump 37. The lower end of the first through passage 47 is connected to the inner wall of the second through passage.

Further, the outer wall of the third connecting member 67 is projected outward in the circumferential direction to form a third projecting ring 71. The third collar 71 is located outside the second through passage. Therefore, when the second connection unit 11 is in threaded connection with the third connection member 67, the third convex ring 71 can abut against the second connection unit 11, and the firmness of the connection between the third connection member 67 and the second connection unit 11 is further improved.

Please refer to fig. 3. Embodiments of the present application provide a sprayer system, comprising: a water tank 17; a sprayer body 23; a universal joint; the universal joint includes a first connection unit 10; which is connected to the sprayer body 23; and a first through passage 47 is provided in the first connecting unit 10; a second connection unit 11 provided on the first connection unit 10, the second connection unit 11 being provided with a plurality of connection portions 15 having different specifications; each connecting part 15 can be respectively detachably connected with the matched water tank 17; and when the connecting part 15 is connected with the matched water tank 17, the water tank 17 can be communicated with the first through passage 47; the second connection unit 11 can replace the plurality of connection parts 15 with each other when the connection parts 15 are separated from the adapted water tank 17.

As can be seen from the above solutions, in the sprayer system according to the embodiment of the present application, the first connection unit 10 and the second connection unit 11 are provided, and the second connection unit 11 is provided with the plurality of connection portions 15, the specifications of each connection portion 15 are different from each other, and each connection portion 15 can be detachably connected to the corresponding water tank 17; so that the second connection unit 11 can replace the plurality of connection parts 15 with each other when the connection parts 15 are separated from the adapted water tank 17; and each of the connection portions 15 can be replaced to one side of the corresponding water tank 17 so that the water tank 17 can be connected to the corresponding connection portion 15, and when the connection portion 15 is connected to the corresponding water tank 17, the water tank 17 can communicate with the first through passage 47, so that the second connection unit 11 can connect the water tank 17 to the corresponding connection portion 15 and communicate the water tank 17 to the first through passage 47 by replacing each of the connection portions 15 with each other, that is, the second connection unit 11 can connect to water tanks 17 of different specifications through each of the connection portions 15. And the first connection unit 10 can be connected to the sprayer body 23, so that one sprayer body 23 can be connected to a plurality of different models of water tanks 17 through the respective connection portions 15 of the second connection unit 11, respectively. This allows one sprayer body 23 to fit a variety of water tanks 17. Therefore, the use convenience is improved, the working efficiency is improved, and the labor cost is reduced.

It should be noted that, in the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is intended or should be construed to indicate or imply relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of the subject matter disclosed herein is not intended to forego the contents of the sprayer body 23 nor should it be construed by the applicant that such subject matter is not considered to be part of the disclosed subject matter.

Claims

1. A universal joint, comprising:

a first connecting unit; for attachment to a sprayer body; a first through channel is arranged in the first connecting unit;

the second connecting unit is arranged on the first connecting unit and comprises a plurality of connecting parts with different specifications, and the connecting parts can be respectively detachably connected with the matched water tanks;

when the connecting part is connected with the matched water tank, the water tank can be communicated with the first through channel;

when the connection part is separated from the water tank adapted thereto, the second connection unit can replace the plurality of connection parts with each other.

2. The universal joint according to claim 1, wherein: the second connecting unit comprises a lengthways extending main body, and the connecting parts are sequentially arranged on the outer wall of the main body along the lengthways extending direction.

3. The universal joint according to claim 2, wherein: a second through channel extending along the lengthwise extending direction is arranged in the main body; the first connecting unit penetrates through the second through channel, so that the main body is sleeved on the first connecting unit.

4. The universal joint according to claim 1, wherein: one of the first connecting unit and the second connecting unit is provided with a limiting part for preventing the second connecting unit from moving relative to the first connecting unit, and the other one of the first connecting unit and the second connecting unit is provided with a rotation preventing part matched with the limiting part.

5. The universal joint according to claim 1, wherein: the connecting part is of a threaded structure and is in threaded connection with the water tank.

6. The universal joint according to claim 1, wherein: the universal joint further comprises a sealing assembly, and the sealing assembly is used for blocking the water tank from communicating with outside air flow; the sealing assembly comprises a first sealing member for sealing a gap between the second connection unit and the adapted water tank; a second sealing member for sealing a gap between the second connection unit and the first connection unit.

7. The universal joint according to claim 6, wherein: the second connecting unit comprises a main body which extends lengthwise, a plurality of blocking parts are further arranged on the outer wall of the main body, each blocking part is located between the adjacent connecting parts, and the first sealing element is located between the blocking part and the connecting part; the blocking part is used for abutting against the first sealing element.

8. The universal joint according to claim 1, wherein: the first connecting unit comprises a first connecting piece and a second connecting piece which are oppositely arranged, and the first connecting piece and the second connecting piece are detachably connected and can respectively abut against two ends of the second connecting unit, so that the second connecting unit can be clamped between the first connecting piece and the second connecting piece; or

The first connecting unit only comprises a third connecting piece, and the second connecting unit is in threaded connection with the third connecting piece.

9. The universal joint according to claim 8, wherein: the first connecting piece is internally provided with a first through hole, the second connecting piece is arranged in the first through hole in a penetrating mode, a second through hole is arranged in the second connecting piece, and the second through hole is communicated with the first through hole to form the first through channel.

10. A sprayer system, characterized in that it comprises:

a water tank;

a sprayer body;

a universal joint; the universal joint comprises a first connecting unit; which is connected to the sprayer body; a first through channel is arranged in the first connecting unit;

the second connecting unit is arranged on the first connecting unit, a plurality of connecting parts with different specifications are arranged on the second connecting unit, and each connecting part can be detachably connected with the corresponding water tank respectively;