WO2021103870A1

WO2021103870A1 - Universal joint and sprayer system

Info

Publication number: WO2021103870A1
Application number: PCT/CN2020/123031
Authority: WO
Inventors: 格哈德格·雷厄姆
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2019-11-27
Filing date: 2020-10-23
Publication date: 2021-06-03
Also published as: CN211726309U

Abstract

A universal joint and a sprayer system. The universal joint comprises: a first connection unit (10) adapted to be connected to a sprayer body (23) and provided with a first through channel (47) inside; and a second connection unit (11) disposed on the first connection unit (10) and comprising a plurality of connection portions (15) having different specifications. The connection portions (15) can be detachably connected to an adapted water tank (17), respectively; moreover, when the connection portions (15) are connected to the adapted water tank (17), the water tank (17) can be communicated with the first through channel (47); when the connection portions (15) are separated from the adapted water tank (17), the second connection unit (11) can replace the plurality of connection portions (15) with each other; the first connection unit (10) and the second connection unit (11) are movably connected, and the second connection unit (11) can rotate with respect to the first connection unit (10), so as to replace the plurality of connection portions (15) with each other. The universal joint and the sprayer system have an effect of strong adaptability.

Description

Universal joint and sprayer system

This application claims the priority of the Chinese patent application whose application date is November 27, 2019 and the application number is 201922072473.3, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of spraying technology, and in particular to a universal joint and sprayer system.

Background technique

The existing sprayer system includes a sprayer body and a water tank. When in use, the sprayer body needs to be connected to the water tank, so that the sprayer body can test the pressure of the liquid in the water tank, so that the liquid in the water tank can be sprayed through the nozzle.

However, the main body of the sprayer in the existing sprayer system can generally only be connected to one type of water tank. When multiple water tanks need to be used, it is necessary to equip different sprayer bodies for various water tank models. Therefore, it is inconvenient to use, low in work efficiency, and high in labor costs.

Therefore, it is necessary to propose a universal joint and sprayer system to overcome the above-mentioned drawbacks.

Summary of the invention

In view of this, the embodiments of the present application provide a universal joint and sprayer system with strong adaptability.

In order to achieve the above objective, the present application provides the following technical solutions: a universal joint comprising: a first connecting unit; which is used to connect with the sprayer main body; and a first through channel is provided in the first connecting unit; A second connection unit, which is arranged on the first connection unit, and the second connection unit includes a plurality of connection parts with different specifications, and the connection parts can be detachably connected with the corresponding water tanks; And when the connecting part is connected to the adapted water tank, the water tank can communicate with the first through passage; when the connecting part is separated from the adapted water tank, the first The second connecting unit can replace a plurality of said connecting parts with each other;

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 restricting portion for contacting the first connecting unit. Matching anti-rotation part; one of the restriction part and the anti-rotation part is a groove, and the other is a protrusion;

The universal joint also includes a sealing component for blocking the air flow between the water tank and the outside; the sealing component includes a first sealing element for sealing the second connecting unit The gap between the water tank and the adapted water tank; a second sealing element, the second sealing element is used to seal the gap between the second connection unit and the first connection unit;

The second connecting unit includes a longitudinally extending main body, and a plurality of the connecting portions are sequentially arranged on the outer wall of the main body along the longitudinally extending direction;

A plurality of blocking portions are further provided on the outer wall of the main body, each of the blocking portions is located between the adjacent connecting portions, and the first sealing member is located between the blocking portion and the connecting portion; The blocking portion is used to press against the first sealing element.

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

As a preferred embodiment, the connecting portion has a threaded structure for threaded connection with the water tank.

As a preferred embodiment, the first connecting unit includes a first connecting piece and a second connecting piece that are arranged oppositely, and the first connecting piece and the second connecting piece are detachably connected to the The two ends of the second connecting unit abut against each other, so that the second connecting unit can be clamped between the first connecting piece and the second connecting piece; or the first connecting unit includes a third connecting piece, The second connecting unit and the third connecting member are connected by threads.

As a preferred embodiment, the first connecting member is provided with a first through hole, the second connecting member is penetrated through the first through hole, and the second connecting member is provided with a first through hole. Two through holes, the second through hole communicates with the first through hole to form the first through channel.

A sprayer system, comprising: a water tank; a sprayer body; a universal joint; the universal joint includes a first connecting unit; which is connected to the sprayer body; and a first through channel is provided in the first connecting unit; A second connecting unit, which is arranged on the first connecting unit, and a plurality of connecting parts with different specifications are arranged on the second connecting unit, and each of the connecting parts can be detachably detached from a matching water tank Connected; and when the connecting portion is connected to the adapted water tank, the water tank can communicate with the first through passage; when the connecting portion is separated from the adapted water tank, the The second connection unit can replace a plurality of the connection parts; one of the first connection unit and the second connection unit is provided with a device for preventing the second connection unit from being relative to the first connection unit. The movement restriction part is provided with an anti-rotation part for cooperating with the restriction part; the universal joint also includes a sealing component, the sealing component is used to block the air flow between the water tank and the outside; The sealing assembly includes a first sealing element, the first sealing element is used to seal the gap between the second connection unit and the adapted water tank; a second sealing element, the second sealing element is used to seal The gap between the second connecting unit and the first connecting unit; the second connecting unit includes a longitudinally extending main body, and a plurality of the connecting portions are arranged in sequence along the longitudinally extending direction. The outer wall of the main body; the outer wall of the main body is also provided with a plurality of blocking portions, each of the blocking portions is located between the adjacent connecting portions, and the first sealing member is located between the blocking portion and the Between the connecting portions; the blocking portion is used to press against the first sealing element.

With the above technical solutions, the universal joint and sprayer system described in the embodiment of this application is provided with a first connection unit and a second connection unit, and a plurality of connection parts are arranged on the second connection unit, and the specifications of each connection part Are different from each other, each of the connecting parts can be detachably connected with the adapted water tank; thus, when the connecting part is separated from the adapted water tank, the second connecting unit can connect a plurality of The connecting parts are replaced with each other; and when the connecting part is connected to the adapted water tank, the water tank can communicate with the first through passage, so that the second connecting unit can replace each connecting part with each other, In this way, the water tank can be connected with the adapted connection part and the water tank can be connected with the first through channel, that is, the second connection unit can be connected with water tanks of different specifications through each connection part. The first connection unit can be connected to the sprayer main body, so one sprayer main body can be connected to a plurality of water tanks of different models through each connection part on the second connection unit. In this way, one sprayer body can be adapted to multiple types of water tanks. This improves the convenience of use, improves work efficiency and reduces labor costs. Therefore, the embodiments of the present application provide a universal joint and sprayer system with strong adaptability.

Description of the drawings

The drawings described herein are only for explanatory purposes, and are not intended to limit the scope of the disclosure of the present application in any way. In addition, the shape and proportional size of each component in the figure are only illustrative, and are used to help the understanding of this application, and do not specifically limit the shape and proportional size of each component of this application. Under the teaching of this application, those skilled in the art can choose various possible shapes and proportional sizes according to specific conditions to implement this application. In the attached picture:

Fig. 1 is an exploded view of the sprayer system according to the embodiment of the application;

2 is a schematic diagram of the structure of the universal joint according to the embodiment of the application;

Fig. 3 is a schematic structural diagram of a sprayer system according to an embodiment of the application;

Fig. 4 is an enlarged schematic diagram of part A in Fig. 3;

Fig. 5 is a schematic structural diagram of another sprayer system according to the embodiment of the application.

Description of reference signs:

10. The first connection unit; 11. The second connection unit; 15. The connection part; 16. The first connection part; 17, the water tank; 18, the second connection part; 19, the second opening; 21, the blocking part; 23, Sprayer main body; 25, first seal; 27, second seal; 29, mating part, 31, second connection; 37, air pump, 39, housing, 41, first connection, 43, air outlet; 45. The first through hole; 47. The first through passage; 49. The second through hole; 51. Diameter expansion section; 53, Diameter reduction section; 55. First inner tube; 57. First convex ring; 59. Section Two convex rings; 61, the first stop surface; 63, the second stop surface; 65, the first opening; 67, the third connector; 69, the main body; 71, the third convex ring.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of them. Based on the implementation manners in this application, all other implementation manners obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terminology used in the specification of the application herein is only for the purpose of describing specific embodiments, and is not intended to limit the application.

Please refer to Figure 1 to Figure 5. The embodiment of the present application provides a universal connector, which includes: a first connection unit 10; it is used to connect with the sprayer body 23; and the first connection unit 10 is provided with a first through channel 47; and a second connection unit 11, It is arranged on the first connecting unit 10, and the second connecting unit 11 includes a plurality of connecting portions 15 with different specifications; the connecting portion 15 can be detachably connected with the matching water tank 17; and when the connecting portion 15 is connected to When the matching water tank 17 is connected, the water tank 17 can communicate with the first through passage 47; when the connecting part 15 is separated from the matching water tank 17, the second connecting unit 11 can replace the multiple connecting parts 15 with each other.

It can be seen from the above solutions that the universal joint of the embodiment of the present application is provided with a first connecting unit 10 and a second connecting unit 11, and a plurality of connecting parts 15 are arranged on the second connecting unit 11, and the specifications of each connecting part 15 Different from each other, the connecting part 15 can be detachably connected with the adapted water tank 17 respectively, and the connecting part 15 can be replaced with a different adapted water tank 17. The first connection unit 10 can be connected to the sprayer main body 23, so one sprayer main body 23 can be connected to a plurality of different types of water tanks 17 through each connection portion 15 on the second connection unit 11, respectively. In this way, one sprayer body 23 can fit multiple types of water tanks 17. This improves the convenience of use, improves work efficiency and reduces labor costs.

In this embodiment, the sprayer body 23 is used to inject gas into the water tank 17 so that the gas can apply pressure to the liquid in the water tank 17. Specifically, the sprayer body 23 may be a manual pump. The manual pump may include a cylinder and a piston arranged in the cylinder. An air outlet 43 is provided on the cylinder. When in use, the operator can move the piston to inject gas into the water tank 17 through the gas outlet 43. Of course, the sprayer body 23 is not limited to a manual pump, but can also be an intelligent pneumatic device. For example, as shown in Figs. 3 and 4, the intelligent starting device includes an air pump 37 and a control mechanism connected to the air pump 37. Through the control of the control mechanism, the air pump 37 can inject gas into the water tank 17 through its air outlet 43. This improves work efficiency and reduces labor intensity.

Furthermore, as shown in FIGS. 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 connected and fixed to the housing 39 through the second opening 19, so that the first through passage 47 is in communication with the air outlet 43, so that the air pump 37 The gas can be injected into the first through channel 47 through the gas outlet 43 and the gas can flow into the water tank 17. The connection mode may be threaded connection, bolt connection, welding, integral molding, etc., which is not specified in this application.

In this embodiment, the second connection unit 11 is provided on the first connection unit 10. Specifically, the first connection unit 10 and the second connection unit 11 are detachably connected. Therefore, the second connection unit 11 can be separated from the first connection unit 10 and the connection part can be replaced.

In this embodiment, the second connecting unit 11 is provided with a plurality of connecting portions 15 with different specifications. The number may be 2, 3, 4, 5, etc., which is not specified in this application. For example, as shown in Fig. 4, there are two connection parts 15. The specifications of each connecting portion 15 are different from each other; so that each connecting portion 15 can be adapted to water tanks 17 of different specifications. That is, the connecting portion 15 of one specification can be adapted to the water tank 17 of one specification. By replacing the connecting part, a universal joint can be adapted to multiple water tanks 17 of different specifications. In this way, the compatibility between the sprayer body 23 and the water tank 17 is improved.

Further, the specification is the definition and identification of a product. Therefore, the specification of the connecting portion 15 may refer to the definition and identification of the connecting portion 15. For example, when the connecting portion 15 has a threaded structure, the specification of the connecting portion 15 is the definition of the threaded structure. The definition of the thread structure includes the definition of the tooth profile, 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 connecting portion 15 are different from each other, that is, each thread structure is different from each other. Each thread structure is different from each other, and the pitch of each thread structure may be different from each other. It is also possible that the tooth profile of each thread structure is different from each other. It is also possible that the direction of rotation of each thread structure is different from each other. It is also possible that the number of threads of each thread structure is different from each other. It is also possible that the nominal diameter of each thread structure is different from each other. It may also be that the tooth profile and pitch of each thread structure are different from each other, which is not specified in this application.

Further, the connecting portion 15 can be detachably connected with the matched water tank 17 respectively, and the detachable connection may be a threaded connection, for example, which is not specified in this application. In the present application, the water tank 17 has a mating part 29 that is adapted to the connecting part 15, and the mating part 29 is provided with a threaded structure. Therefore, the connecting part 15 has a threaded structure that is adapted to the mating part 29. Specifically, the matching portion 29 is an internal thread, and the connecting portion 15 is provided with an external thread structure adapted to the internal thread.

Further, the water tank 17 has a first opening 65 that is open upward. The matching portion 29 is provided on the inner wall of the first opening 65. The different water tanks 17, that is, the specifications of the mating parts 29 of the respective water tanks 17 are different from each other. The specification of the mating portion 29 may refer to the definition and identification of the mating portion 29.

Further, the water tank 17 includes a bottom wall and a side wall surrounding the bottom wall. A liquid storage cavity with the first opening 65 is formed between the bottom wall and the side wall. The liquid storage cavity is used to store liquid. The liquid may be water, for example. Of course, the liquid is not limited to water. It can also be other liquids, which are not specified in this application. An injection pipe is arranged in the liquid storage cavity. The spray tube is used to spray the liquid out in mist. Therefore, when the water tank 17 is connected to the sprayer main body 23 through the first opening 65, the sprayer main body 23 can inject gas into the water tank 17 through the first opening 65, so that the liquid in the water tank 17 flows from the spray pipe under the action of the pressure. Squirting.

In one embodiment, the first connecting unit 10 includes a first connecting piece 41 and a second connecting piece 31 which are arranged oppositely. For example, as shown in FIGS. 3 and 4, the first connecting member 41 and the second connecting member 31 are located on the upper side and the lower side of the second connecting unit 11, respectively. The first connecting member 41 and the second connecting member 31 are detachably connected and can respectively abut against both ends of the second connecting unit 11, so that the second connecting unit 11 can be clamped on the first connecting member 41 and the second connecting member 31 between. Specifically, as shown in FIGS. 3 and 4, the first connecting member 41 and the second connecting member 31 can respectively abut the upper end and the lower end of the second connecting unit 11. Therefore, the first connecting member 41 and the second connecting member 31 can be clamped with the second connecting unit 11. Therefore, when the connecting portion 15 is replaced, only the first connecting piece 41 and the second connecting piece 31 need to be separated, and then the second connecting unit 11 can be changed to replace the connecting portion 15. For example, in this embodiment, the second connection unit can be replaced up and down. For example, the water tank 17 shown in FIG. 4 is connected to the connecting portion 15 below. When the upper connecting portion 15 needs to be used, only the first connecting piece 41 and the second connecting piece 31 need to be separated, and the positions of the upper connecting portion 15 and the lower connecting portion 15 can be exchanged with each other, thereby achieving Replace the connection part 15. Of course, it is not limited to this, and a completely different second connection unit can be replaced.

Further, the first connecting member 41 is provided with a first through hole 45, the second connecting member 31 is penetrated in the first through hole 45, and the second connecting member 31 is provided with a second through hole 49, and the second through hole The hole 49 communicates with the first through hole 45 to form a first through passage 47. Specifically, one end of the first connecting member 41 is used to connect with the sprayer main body 23. The other end of the first connecting piece 41 is connected to the second connecting piece 31. For example, as shown in FIGS. 3 and 4, the first connecting member 41 is located above the second connecting member 31. The upper end of the first connecting piece 41 is used for threaded connection with the inner wall of the second opening 19. The lower end of the first connecting piece 41 is used for threaded connection with the second connecting piece 31. Further, the first connecting member 41 has a hollow cylindrical shape as a whole. The hollow portion forms a first through hole 45 with both ends open. As shown in FIGS. 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 FIG. 4, the second connecting member 31 has a hollow cylindrical shape as a whole. The hollow portion forms a second through hole 49. The first through hole 45 of the first connecting member 41 is provided with a first internal thread. The outer wall of the second connecting member 31 is provided with a first external thread for mating with the first internal thread. In this way, the second through hole 49 can communicate with the first through hole 45. As shown in FIGS. 3 and 4, the second connecting member 31 penetrates through the first through hole 45. The outer wall of the upper end of the second connecting member 31 is provided with a first external thread. The outer wall of the lower end of the first through hole 45 is provided with a first internal thread.

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

Further, a hollow first inner tube 55 is provided in the expanded diameter section 51. The first inner tube 55 is used to pass through the second connecting member 31. The upper end of the first inner tube 55 is connected to the reduced diameter section 53. In addition, the first inner tube 55 communicates with the reduced diameter section 53. Therefore, the gas in the reduced-diameter section 53 can enter the second through hole 49 of the second connecting member 31 more quickly through the first inner tube 55. In this way, the efficiency of the gas pump 37 injecting gas into the water tank 17 is improved.

In one embodiment, the second connection unit 11 includes a body 69 that extends longitudinally. For example, as shown in FIGS. 2, 3, and 4, the main body 69 extends in the vertical direction. Specifically, for example, the main body 69 has a columnar shape. The columnar body 69 extends longitudinally. Of course, the main body 69 is not limited to a columnar shape, and may also have other shapes. For example, cone shape, etc., which are not specified in this application. Further, the main body 69 is provided with a second through passage extending in a longitudinally extending direction. Specifically, the main body 69 is a hollow structure. The hollow part forms a second through channel with both ends open. For example, as shown in FIG. 2, the main body 69 extends in the vertical direction. The second through passage extends in the up-down direction.

Further, a plurality of connecting portions 15 are sequentially arranged on the outer wall of the main body 69 along the longitudinal extension direction. Therefore, the second connecting unit 11 can replace the plurality of connecting portions 15 with each other in the longitudinally extending direction. For example, as shown in FIGS. 3 and 4, the main body 69 extends in the vertical direction. There are two connecting parts 15. The two connecting portions 15 are sequentially arranged on the outer wall of the main body 69 along the up-down direction. That is, the two connecting parts 15 are respectively located at the upper end and the lower end of the main body 69. Specifically, the two connecting portions 15 are the first connecting portion 16 and the second connecting 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. That is, the first connecting portion 16 is located below the second connecting portion 18. When the first connecting portion 16 is matched with the matching portion 29 on the water tank 17, the second connecting portion 18 can be located above the water tank 17. When the second connecting unit 11 replaces the first connecting portion 16 and the second connecting portion 18 with each other in the up and down direction, the second connecting portion 18 is replaced below the first connecting portion 16.

In one embodiment, the first connecting unit 10 is inserted into the second through passage, so that the main body 69 is sleeved on the first connecting unit 10. For example, as shown in FIGS. 3 and 4, the first connecting member 41 and the second connecting member 31 are both penetrated in the second through passage. And the extension direction of the second through passage is consistent with the extension direction of the first through passage 47. For example, as shown in FIGS. 3 and 4, the extension direction of the second through-channel and the extension direction of the first through-channel 47 are both vertical. In this way, the first connecting member 41 can be separated from the second connecting member 31, so that the second connecting unit 11 can be separated from the first connecting unit 10, so that the second connecting unit 11 can connect the plurality of connecting parts 15 to each other. replace.

Further, the outer wall of the first connecting member 41 protrudes outward in the circumferential direction to form a first convex ring 57. For example, as shown in FIGS. 3 and 4, the outer wall of the upper end of the first connecting member 41 protrudes outward to form a first convex ring 57. The outer wall of the second connecting member 31 protrudes outward in the circumferential direction to form a second convex ring 59. For example, as shown in FIGS. 3 and 4, the outer wall of the lower end of the second connecting member 31 protrudes outward to form a second convex ring 59. Therefore, the second convex ring 59 is located below the first convex ring 57. The first convex ring 57 has a first stop surface 61 facing the second convex ring 59. For example, as shown in FIGS. 3 and 4, the first stop surface 61 faces downward. The second convex ring 59 has a second stop surface 63 facing the first convex ring 57. For example, as shown in FIGS. 3 and 4, the second stop surface 63 faces upward. The first stop surface 61 and the second stop surface 63 respectively abut against two ends of the second connecting unit 11. For example, as shown in FIGS. 3 and 4, the first stop surface 61 abuts the upper end of the second connecting unit 11. The second stop surface 63 abuts against the lower end of the second connecting unit 11. Thus, the second connecting unit 11 is located between the first stop surface 61 and the second stop surface 63. In this way, the second connection unit 11 and the first connection unit 10 are snapped together.

Further, a plurality of blocking parts 21 are provided on the outer wall of the main body 69. Each blocking portion 21 is located between adjacent connecting portions 15, and each blocking portion 21 separates the connected connecting portions 15.

Further, the universal joint of the embodiment of the present application further includes a sealing component. The sealing assembly is used to block the air flow between the water tank 17 and the outside. The sealing assembly includes a first sealing member 25, the first sealing member 25 is used to seal the gap between the second connecting unit 11 and the corresponding water tank 17; the second sealing member 27, the second sealing member 27 is used to seal the second The gap between the second connection unit 11 and the first connection unit 10.

Further, there are multiple first sealing members 25. The plurality of first sealing members 25 correspond to the plurality of connecting portions 15. Each first sealing member 25 is provided on the corresponding connecting portion 15. Therefore, when each connecting portion 15 is adapted to the water tank 17 of different specifications, a first sealing member 25 is provided between each connecting portion 15 and the water tank 17, and the blocking portion 21 presses the first sealing member 25 against it. Between the water tanks 17, the tightness between the first sealing element and the water tank is ensured. In this way, the tightness between each connecting portion 15 and the water tank 17 is ensured. Specifically, as shown in Figs. 3 and 4, there are two connecting parts 15. There are two first seals 25. Each first sealing member 25 is arranged on a connecting portion 15. Therefore, when each connecting portion 15 is matched with a water tank 17, each connecting portion 15 and the water tank 17 are sealed by the first sealing member 25. Specifically, the first sealing member 25 may be an O-shaped sealing ring. Of course, the first sealing member 25 is not limited to being an O-shaped sealing ring, but may also be made of other materials, such as a sealing packing, etc., which is not specified in this application.

Preferably, one of the first connecting unit 10 and the second connecting unit 11 is provided with a restricting part for preventing the movement of the second connecting unit 11 relative to the first connecting unit 10, and the other is provided with a restricting part for cooperating with the restricting part. Anti-rotation department. Thus, the firmness of the connection between the first connection unit 10 and the second connection unit is ensured. For example, when the water tank 17 is rotated, the restricting portion can limit the rotation of the second connection unit 11 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, thereby making The thread structure on the second connecting unit 11 can be separated from the matching portion 29 in the water tank 17. Further, the matching may be that the anti-rotation part and the restricting part can be matched in shape and size. Specifically, one of the restricting portion and the anti-rotation portion is a groove, and the other is a protrusion. For example, the restricting portion may be a groove. The anti-rotation part is convex. Of course, it is also possible that the restricting portion is a protrusion. The anti-rotation part is a groove. There is no provision for this application.

Further, the second sealing member 27 can seal the gap between the first connecting member 41 and the second connecting member 31 to prevent fluid from flowing out of the gap. Specifically, the second sealing member 27 may be an O-ring. Of course, the second sealing member 27 is not limited to an O-shaped sealing ring, but may also be made of other materials, such as a sealing packing, etc., which is not specified in this application.

In one embodiment, the first connection unit 10 only includes the third connection member 67. Specifically, as shown in FIG. 5, the third connecting member 67 is provided on the upper side of the second connecting unit 11. The end of the third connecting member 67 facing away from the second connecting unit 11 is used to connect with the sprayer main body 23, and the connecting manner may be threaded connection, welding, or the like. An end of the third connecting member 67 close to the second connecting unit 11 is used for connecting with the second connecting unit 11. For example, as shown in FIG. 5, the lower end of the third connecting member 67 is threadedly connected with the inner wall of the second through passage. Specifically, the third connecting member 67 passes through the second through passage. The third connecting member 67 extends into the outer wall of the second through channel and is provided with an internal thread for threaded connection with the inner wall of the second through channel.

Specifically, the third connecting member 67 has a hollow cylindrical shape as a whole. The hollow part forms a first through passage 47 with both ends open. 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 protrudes outward in the circumferential direction to form a third convex ring 71. The third convex ring 71 is located outside the second through passage. Therefore, when the second connecting unit 11 and the third connecting member 67 are threadedly connected, the third convex ring 71 can abut against the second connecting unit 11, thereby improving the firmness of the connection between the third connecting member 67 and the second connecting unit 11. Sex.

Please refer to Figure 3. The embodiment of the present application provides a sprayer system, which includes: a water tank 17; a sprayer body 23; a universal joint; the universal joint includes a first connection unit 10; it is connected to the sprayer body 23; and the first connection unit 10 is provided with a first connection unit 10; A through passage 47; the second connecting unit 11, which is arranged on the first connecting unit 10, the second connecting unit 11 is provided with a plurality of connecting portions 15 with different specifications; each connecting portion 15 can be adapted to The water tanks 17 are detachably connected; and when the connecting portion 15 is connected to the matching water tank 17, the water tank 17 can communicate with the first through passage 47; when the connecting portion 15 is separated from the matching water tank 17, the first The two connecting unit 11 can replace a plurality of connecting parts 15 with each other.

It can be seen from the above solution that the sprayer system of the embodiment of the present application is provided with a first connecting unit 10 and a second connecting unit 11, and a plurality of connecting parts 15 are arranged on the second connecting unit 11, and the specifications of each connecting part 15 Different from each other, each connecting part 15 can be detachably connected to the matching water tank 17; thus, when the connecting part 15 is separated from the matching water tank 17, the second connecting unit 11 can connect the multiple connecting parts 15 to each other. Replace; and make each connecting portion 15 can be replaced to one side of the adapted water tank 17, so that the water tank 17 can be connected to the adapted connecting portion 15, and when the connecting portion 15 is connected to the adapted water tank 17 When the water tank 17 can be connected to the first through-channel 47, the second connecting unit 11 can replace the connecting parts 15 with each other so that the water tank 17 can be connected with the matching connecting part 15 and the water tank 17 can be connected to the first through-channel 47. The through passage 47 is connected, that is, the second connecting unit 11 can be connected to the water tank 17 of different specifications through each connecting portion 15. The first connection unit 10 can be connected to the sprayer main body 23, so one sprayer main body 23 can be connected to a plurality of different types of water tanks 17 through each connection portion 15 on the second connection unit 11, respectively. In this way, one sprayer body 23 can fit multiple types of water tanks 17. This improves the convenience of use, improves work efficiency and reduces labor costs.

It should be noted that in the description of this application, the terms "first", "second", etc. are only used to describe the purpose and distinguish similar objects. There is no sequence between the two, nor can they be understood as instructions or Imply relative importance. In addition, in the description of the present application, unless otherwise specified, "plurality" means two or more.

It should be understood that the above description is for illustration and not for limitation. By reading the above description, many implementations and many applications beyond the examples provided will be obvious to those skilled in the art. Therefore, the scope of the present teaching should not be determined with reference to the above description, but should be determined with reference to the foregoing claims and the full range of equivalents possessed by these claims. For comprehensive purposes, all articles and references including patent applications and publications are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not to abandon the content of the sprayer body 23, nor should it be deemed that the applicant did not consider the subject matter as part of the subject matter of the disclosed application.

Claims

A universal joint, characterized in that it comprises:

A first connection unit; which is used to connect with the sprayer body; and a first through channel is provided in the first connection unit;

A second connection unit, which is arranged on the first connection unit, and the second connection unit includes a plurality of connection parts with different specifications, and the connection parts can be detachably connected with the corresponding water tanks;

And when the connecting portion is connected to the adapted water tank, the water tank can be connected to the first through passage;

When the connecting part is separated from the adapted water tank, the second connecting unit can replace a plurality of the connecting parts with each other;

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 restricting portion for contacting the first connecting unit. Matching anti-rotation part; one of the restriction part and the anti-rotation part is a groove, and the other is a protrusion;

The universal joint also includes a sealing component for blocking the air flow between the water tank and the outside; the sealing component includes a first sealing element for sealing the second connecting unit The gap between the water tank and the adapted water tank; a second sealing element, the second sealing element is used to seal the gap between the second connection unit and the first connection unit;

The second connecting unit includes a longitudinally extending main body, and a plurality of the connecting portions are sequentially arranged on the outer wall of the main body along the longitudinally extending direction;

A plurality of blocking portions are further provided on the outer wall of the main body, each of the blocking portions is located between the adjacent connecting portions, and the first sealing member is located between the blocking portion and the connecting portion; The blocking portion is used to press against the first sealing element.
The universal joint according to claim 1, wherein the main body is provided with a second through passage extending along the longitudinal extension direction; the first connecting unit penetrates through the second through passage Inside, so that the main body is sleeved on the first connecting unit.
The universal joint according to claim 1, wherein the connecting portion is a threaded structure for threaded connection with the water tank.
The universal joint according to claim 1, wherein the first connecting unit comprises a first connecting piece and a second connecting piece that are arranged oppositely, and the first connecting piece and the second connecting piece are detachably connected And can respectively abut against both 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 includes a third connecting piece, and the second connecting unit and the third connecting piece are connected by a screw thread.
The universal joint according to claim 4, wherein a first through hole is provided in the first connecting member, the second connecting member penetrates through the first through hole, and the second A second through hole is provided in the connecting piece, and the second through hole communicates with the first through hole to form the first through passage.
A sprayer system, characterized in that it comprises:

Water tank

Sprayer body;

A universal joint; the universal joint includes a first connection unit; which is connected to the sprayer main body; and a first through channel is provided in the first connection unit;

The second connecting unit is arranged on the first connecting unit, and a plurality of connecting parts with different specifications are arranged on the second connecting unit, and each connecting part can be matched with a corresponding water tank. Disconnect the connection;

And when the connecting portion is connected to the adapted water tank, the water tank can be connected to the first through passage;

When the connecting part is separated from the adapted water tank, the second connecting unit can replace a plurality of the connecting parts with each other;

One of the first connecting unit and the second connecting unit is provided with a restricting part for preventing the movement of the second connecting unit relative to the first connecting unit, and the other is provided with a restricting part for contacting the first connecting unit. Matching anti-rotation part; one of the restriction part and the anti-rotation part is a groove, and the other is a protrusion;

The universal joint also includes a sealing component for blocking the air flow between the water tank and the outside; the sealing component includes a first sealing element for sealing the second connecting unit The gap between the water tank and the adapted water tank; a second sealing element, the second sealing element is used to seal the gap between the second connection unit and the first connection unit;

The second connecting unit includes a longitudinally extending main body, and a plurality of the connecting portions are sequentially arranged on the outer wall of the main body along the longitudinally extending direction;

A plurality of blocking portions are further provided on the outer wall of the main body, each of the blocking portions is located between the adjacent connecting portions, and the first sealing member is located between the blocking portion and the connecting portion; The blocking portion is used to press against the first sealing element.