CN212468627U

CN212468627U - Rotary joint for spray gun

Info

Publication number: CN212468627U
Application number: CN202020598141.9U
Authority: CN
Inventors: 刘清龙; 李苏诺; 王超妹
Original assignee: Ningbo Lis Industrial Co ltd
Current assignee: Ningbo Lis Industrial Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2021-02-05
Anticipated expiration: 2030-04-20

Abstract

The utility model provides a rotary joint for spray gun belongs to spraying equipment accessory technical field, include: base, rotation head and tubulose connecting axle, be provided with the connection end on the base, it is overhead to rotate to be provided with the spraying end, the base passes through the tubulose connecting axle with it is articulated to rotate the head, be provided with first coating hole and first shaft hole in the base, it is provided with second coating hole and second shaft hole in the rotation head, the tubulose connecting axle includes feed inlet, discharge gate and tube hole, the feed inlet with the discharge gate all with the tube hole intercommunication, the tubulose connecting axle is worn to establish first shaft hole with the second shaft is downthehole, the feed inlet with first coating hole intercommunication, the discharge gate with second coating hole intercommunication. The utility model has the advantages that: the rotary joint is reasonable and ingenious in structure, smooth rotation can be guaranteed, and coating leakage can be prevented.

Description

Rotary joint for spray gun

Technical Field

The utility model belongs to the technical field of the spraying equipment accessory, a rotary joint for spray gun is related to.

Background

Spray guns are devices that use a quick release of liquid or compressed air as a motive force, typically for spraying or cleaning, and also as a means of spraying paint, capable of ejecting paint or paint from a nozzle, while adapters are a means of connecting spray guns to other accessories, many of which currently require a rotary adapter to change the direction and angle of the spray.

For example, chinese patent application No. 201611213486.2 discloses a high pressure spray gun with an external fitting, which includes: casing that insulating plastic was made, runner pipe that has near-end and distal end, be located the handle of runner pipe near-end, install in the connector of runner pipe distal end, the adapter that is connected with the connector, and the shower nozzle that is connected with the adapter, high-pressure spray gun still is equipped with the driving arm that is located between shower nozzle and the connector and connects the pull rod of driving arm to handle, the rotation of handle drives the pull rod back-and-forth movement, and then drives the rotation of driving arm and shower nozzle, high-pressure spray gun still is including installing the outer joint in the runner pipe near-end, the outer joint has the external screw thread that is used for with outside water source union coupling, the outer joint is used for transmitting the liquid of outside water source pipe to the runner intraductally.

The spray gun is provided with the rotary joint, but the rotary structure has the defects of unreasonable structure, easy paint leakage and the like, so that certain improvement space is provided.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a rotary joint for spray gun.

The purpose of the utility model can be realized by the following technical proposal: a swivel joint for a spray gun, comprising: base, rotation head and tubulose connecting axle, be provided with the connection end on the base, it is overhead to rotate to be provided with the spraying end, the base passes through the tubulose connecting axle with it is articulated to rotate the head, be provided with first coating hole and first shaft hole in the base, it is provided with second coating hole and second shaft hole in the rotation head, the tubulose connecting axle includes feed inlet, discharge gate and tube hole, the feed inlet with the discharge gate all with the tube hole intercommunication, the tubulose connecting axle is worn to establish first shaft hole with the second shaft is downthehole, the feed inlet with first coating hole intercommunication, the discharge gate with second coating hole intercommunication.

Preferably, the tip of base is provided with the arc terminal surface, it is L shape structure or 7 font structures to rotate the head, and it includes connecting portion and shower nozzle portion to rotate the head, connecting portion with shower nozzle portion connects, the second shaft hole sets up on the connecting portion, the base with connecting portion contradict and are connected, the spraying end with shower nozzle portion connects.

Preferably, a knob cover is arranged at one end of the tubular connecting shaft, an external thread is arranged at the other end of the tubular connecting shaft, the second shaft hole is in a threaded hole structure, and the tubular connecting shaft is in threaded connection with the second shaft hole so that the rotating head is fixed on the side wall of the base.

Preferably, the feed inlet and the discharge outlet are arranged on the circumferential surface of the tubular connecting shaft, a first transition cavity is formed in the first shaft hole, a second transition cavity is formed in the second shaft hole, the feed inlet is located in the first transition cavity and communicated with the first transition cavity, the first transition cavity is communicated with the first coating hole, the discharge outlet is located in the second transition cavity and communicated with the second transition cavity, and the second transition cavity is communicated with the second coating hole.

Preferably, two first sealing rings are arranged between the tubular connecting shaft and the first shaft hole, the first transition cavity is located between the two first sealing rings, and a second sealing ring is arranged between the base and the rotating head.

Preferably, the base is provided with an installation screw hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the rotary joint is reasonable and ingenious in structure, smooth rotation can be guaranteed, and coating leakage can be prevented.

2. The tubular connecting shaft can be connected in the second shaft hole through the external thread, so that the tubular connecting shaft not only can enable the base and the rotating head to rotate relatively, but also can apply axial locking force to the base, the base is pressed on the rotating head, the resistance of the rotating head during rotation can be increased, and the rotating head is prevented from rotating easily.

3. Having set up the transition chamber, first transition chamber is flowed to earlier to coating, then has entered into the feed inlet again, flows into the second transition chamber from the discharge gate afterwards, flows into the second from the second transition chamber again and scribbles the material hole, just so can make the tubular connecting axle realize the effect of shaft body connection and supply the effect that coating passed through to the head does not influence the coating spraying when rotating.

Drawings

Fig. 1 is an exploded view of a rotary joint for a spray gun according to the present invention.

Fig. 2 is a schematic structural view of the rotary joint for a spray gun according to the present invention.

Fig. 3 is an effect schematic diagram of the installation screw hole of the present invention.

In the figure, 100, base; 110. connecting the end heads; 120. a first coating aperture; 130. a first shaft hole; 140. a first transition chamber; 150. an arc-shaped end face; 160. mounting a screw hole; 200. rotating the head; 210. spraying an end head; 220. a second coating aperture; 230. a second shaft hole; 240. a second transition chamber; 250. a connecting portion; 260. a shower head portion; 300. a tubular connecting shaft; 310. a feed inlet; 320. a discharge port; 330. a tube hole; 340. a first seal ring; 350. a second seal ring; 360. a knob cover; 370. and (4) external threads.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2, 3, a rotary joint for a spray gun comprises: the base 100 is provided with a connecting end 110, and the rotating head 200 is provided with a spraying end 210.

Preferably, the rotation is in fact a fitting connected to the mouth of the spray gun, provided with a connection head 110 and a spraying head 210, said connection head 110 being intended to be connected to the spray gun; it is worth noting here that the connection fitting is a component that is adapted to the nozzle or muzzle of the spray gun, while the spray tip 210 is a nozzle structure that is capable of delivering a uniform spray of coating material.

The base 100 is hinged to the rotary head 200 through the tubular connecting shaft 300, preferably, the rotary head 200 can rotate relative to the base 100, wherein the base 100 is connected to the spray gun through the connecting end 110, the rotary head 200 can rotate relative to the base 100, the tubular connecting shaft 300 plays a role in hinging the rotary head 200 to the base 100 and transferring the paint into the rotary head 200, the rotary head 200 changes the spraying direction through rotation in actual use, if the paint needs to be firstly sprayed on a wall and then painted, the rotary head 200 faces the wall, and if the paint needs to be sprayed on the roller brush assembly and then painted, the rotary head 200 rotates to face the roller brush assembly.

The base 100 is provided with a first coating hole 120 and a first shaft hole 130, the rotating head 200 is provided with a second coating hole 220 and a second shaft hole 230, the tubular connecting shaft 300 includes a feed inlet 310, a discharge outlet 320 and a pipe hole 330, the feed inlet 310 and the discharge outlet 320 are both communicated with the pipe hole 330, the tubular connecting shaft 300 is arranged in the first shaft hole 130 and the second shaft hole 230 in a penetrating manner, the feed inlet 310 is communicated with the first coating hole 120, and the discharge outlet 320 is communicated with the second coating hole 220.

Preferably, the first painting material hole 120 is actually communicated with the connection tip 110, and the spray gun drives the painting material into the first painting material hole 120 through the connection tip 110, and then the painting material enters the tube hole 330 through the inlet hole 310, and then the painting material enters the second painting material hole 220 from the outlet hole 320, and finally enters the spray tip 210 from the second painting material hole 220 and is sprayed out.

It should be noted that the tubular connecting shaft 300 is tubular, and besides the effect of a shaft body, the tubular connecting shaft 300 also transmits the paint through the pipe hole 330, and a part of the tubular connecting shaft 300 is inserted into the base 100, and the other part is inserted into the rotating head 200, so that the paint enters the rotating head 200 from the base 100 along the pipe hole 330; the rotary joint is reasonable and ingenious in structure, smooth rotation can be guaranteed, and coating leakage can be prevented.

As shown in fig. 1 and 2, on the basis of the above embodiment, an arc end surface 150 is provided at an end portion of the base 100, the rotating head 200 has an L-shaped structure or a 7-shaped structure, the rotating head 200 includes a connecting portion 250 and a nozzle portion 260, the connecting portion 250 is connected to the nozzle portion 260, the second shaft hole 230 is provided in the connecting portion 250, the base 100 is in interference connection with the connecting portion 250, and the nozzle tip 210 is connected to the nozzle portion 260.

Preferably, the L-shaped rotary head 200 enables the base 100 to be more reliably connected to the rotary head 200, and the end of the base 100 is the arc-shaped end surface 150, so that the rotary head 200 is not touched when adjusting the spraying angle and direction.

It should be noted that, in the existing rotary joint, two straight tubular structures are generally used, and in the present embodiment, the rotary joint 200 is configured in an L shape or a 7 shape, so that the connection portion 250 and the nozzle portion 260 are vertically disposed, and a space for accommodating the base 100 is formed at an included angle between the connection portion 250 and the nozzle portion 260, in a specific structure, the front end of the base 100 faces the nozzle portion 260, and the connection portion 250 is located at a side portion of the base 100, so that the connection between the base 100 and the rotary joint 200 can be more reliable, and the paint can be prevented from leaking.

Preferably, in a practical structure, the rotating head 200 may have a 7-shaped structure, in which the first painting hole 120 is opened in the axial direction of the base 100, and the second painting hole 220 is opened obliquely.

As shown in fig. 1 and 2, in addition to the above embodiment, one end of the tubular connection shaft 300 is provided with a knob cover 360, the other end of the tubular connection shaft 300 is provided with an external thread 370, the second shaft hole 230 has a threaded hole structure, and the tubular connection shaft 300 is screwed into the second shaft hole 230 so as to fix the rotor 200 to the sidewall of the base 100.

Preferably, the tubular connection shaft 300 can be connected in the second shaft hole 230 through the external thread 370, so that the tubular connection shaft 300 not only can enable the base 100 and the rotator 200 to rotate relatively, but also can apply an axial locking force to the base 100, so that the base 100 is pressed against the rotator 200, and thus the resistance of the rotator 200 during rotation can be increased, and the rotator 200 is prevented from easily rotating.

As shown in fig. 1 and 2, on the basis of the above embodiment, the feed port 310 and the discharge port 320 are disposed on the circumferential surface of the tubular connecting shaft 300, a first transition cavity 140 is formed in the first shaft hole 130, a second transition cavity 240 is formed in the second shaft hole 230, the feed port 310 is located in the first transition cavity 140 and is communicated with the first transition cavity 140, the first transition cavity 140 is communicated with the first paint hole 120, the discharge port 320 is located in the second transition cavity 240 and is communicated with the second transition cavity 240, and the second transition cavity 240 is communicated with the second paint hole 220.

Preferably, the inlet 310 and the outlet 320 are both disposed on the wall surface of the tubular connecting shaft 300 and located at two ends of the tubular connecting shaft 300, respectively, and the tubular step shape itself may be a stepped shaft structure, which has a smaller diameter of the inlet 310 and the outlet 320, so that an annular gap is formed between the first shaft hole 130 and the second shaft hole 230 and the tubular connecting shaft 300, and the two annular gaps are the first transition cavity 140 and the second transition cavity 240.

Preferably, the first transition chamber 140 and the second transition chamber 240 are provided to facilitate the flow of coating material from the first coating material hole 120 into the tube hole 330 and from the tube hole 330 to the second coating material hole 220. if no transition chamber is provided, the feed inlet 310 and the discharge outlet 320 must be aligned with the openings of the coating material holes, and once the rotary head 200 is rotated, the discharge outlet 320 cannot be aligned with the second coating material hole 220; if the transition cavity is provided, the coating firstly flows to the first transition cavity 140, then enters the feed inlet 310, then flows to the second transition cavity 240 from the discharge port 320, and then flows to the second coating hole 220 from the second transition cavity 240, so that the tubular connecting shaft 300 can realize the effect of shaft body connection and the effect of coating passing, and the coating spraying is not influenced when the rotating head 200 rotates.

As shown in fig. 1 and 2, in addition to the above embodiments, two first sealing rings 340 are disposed between the tubular connecting shaft 300 and the first shaft hole 130, the first transition cavity 140 is located between the two first sealing rings 340, and a second sealing ring 350 is disposed between the base 100 and the rotating head 200.

Preferably, two first sealing rings 340 are sleeved on the tubular connecting shaft 300, the diameter of the tubular connecting shaft 300 is smaller than that of the first shaft hole 130, and the two first sealing rings 340 are located in the first shaft hole 130 and at two ends of the first shaft hole 130, so that a sealed first transition cavity 140 is formed between the two first sealing rings 340, so that the tubular connecting shaft 300 can rotate relative to the base 100 and maintain the seal.

Preferably, the second sealing ring 350 is used to seal the rotary head 200 with the base 100, and more particularly, the second sealing ring 350 is fixed to the connecting portion 250 so as to be interference-connected with the base 100.

As shown in fig. 1 and 3, in addition to the above-described embodiment, the base 100 is provided with the mounting screw hole 160, and preferably, other members may be attached to the base 100, and the other members are connected to the mounting screw hole 160 by a mounting bracket and a bolt, so that the other members are connected to the rotary joint.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A swivel joint for a spray gun, comprising: base, rotation head and tubulose connecting axle, be provided with the connection end on the base, it is overhead to rotate to be provided with the spraying end, the base passes through the tubulose connecting axle with it is articulated to rotate the head, be provided with first coating hole and first shaft hole in the base, it is provided with second coating hole and second shaft hole in the rotation head, the tubulose connecting axle includes feed inlet, discharge gate and tube hole, the feed inlet with the discharge gate all with the tube hole intercommunication, the tubulose connecting axle is worn to establish first shaft hole with the second shaft is downthehole, the feed inlet with first coating hole intercommunication, the discharge gate with second coating hole intercommunication.

2. A swivel joint for a spray gun as claimed in claim 1, wherein: the tip of base is provided with the arc terminal surface, it is L shape structure or 7 font structures to rotate the head, and it includes connecting portion and shower nozzle portion to rotate the head, connecting portion with the shower nozzle portion is connected, the second shaft hole sets up on the connecting portion, the base with connecting portion contradict and are connected, the spraying end with the shower nozzle portion is connected.

3. A swivel joint for a spray gun as claimed in claim 1, wherein: the rotary head is characterized in that a knob cover is arranged at one end of the tubular connecting shaft, an external thread is arranged at the other end of the tubular connecting shaft, the second shaft hole is of a threaded hole structure, and the tubular connecting shaft is in threaded connection with the second shaft hole so that the rotary head is fixed on the side wall of the base.

4. A swivel joint for a spray gun as claimed in claim 1, wherein: the feed inlet with the discharge gate is seted up on the global of tubulose connecting axle, be formed with first transition chamber in the first shaft hole, be formed with the second transition chamber in the second shaft hole, the feed inlet is located in the first transition chamber and with first transition chamber intercommunication, first transition chamber with first scribble material hole intercommunication, the discharge gate is located in the second transition chamber and with second transition chamber intercommunication, the second transition chamber with the material hole intercommunication is scribbled to the second.

5. A swivel joint for a spray gun as claimed in claim 4, wherein: two first sealing rings are arranged between the tubular connecting shaft and the first shaft hole, the first transition cavity is located between the two first sealing rings, and a second sealing ring is arranged between the base and the rotating head.

6. A swivel joint for a spray gun as claimed in claim 1, wherein: and the base is provided with an installation screw hole.