Air-conductive rotary sprinkler

Abstract

An air-conductive rotary sprinkler includes an air-conductive rotary sprinkling device, a fluid supply assembly and a dust-collecting cover. The air-conductive rotary sprinkling device further includes a main housing tube, an inner rotary tube and a rotary spray head. The rotary spray head includes a spray-head casing connected with the inner rotary tube and a guide plug installed inside the spray-head casing and further including a helical actuating groove, a helical conductive groove, a central channel and a sideway channel. The dust-collecting cover is assembled to the air-conductive rotary sprinkling device. The pressured airflow from the helical air channel rotates the rotary spray head, and the pressured airflow from the helical conductive channel also alters the spray direction of the fluid originally flowing along the base axis, such that the fluid can be sprayed out of the rotary spray head in a rotary manner.

Claims

1. An air-conductive rotary sprinkler, comprising: an air-conductive rotary sprinkling device, including: a main housing tube; an inner rotary tube, rotationally mounted inside the main housing tube about a base axis, having an air-conveying channel; and a rotary spray head, including: a spray-head casing, connected with the inner rotary tube, having an accommodation room communicative in space with the air-conveying channel; and a guide plug, installed inside the accommodation room, including: a helical actuating groove, pairing an inner wall of the spray-head casing to form a helical air channel communicative in space with the air-conveying channel; a helical conductive groove, located symmetrically with respect to the helical actuating groove, pairing another inner wall of the spray-head casing to form a helical conductive channel communicative in space with the air-conveying channel; a central channel, extending along the base axis and being communicative in space with the air-conveying channel; and a sideway channel, extending along an air-injection direction crossing the base axis and being communicative in space with the helical conductive groove; and a fluid supply assembly, including: a spray gun, engaging the main housing tube for providing a pressured airflow into the air-conveying channel; and a fluid supply apparatus, connected with the spray gun, having a fluid-conveying pipe penetrating the air-conveying channel and the central channel for conveying a fluid; and a dust-collecting cover, assembled to the air-conductive rotary sprinkling device; wherein the fluid in the fluid-conveying pipe flowing out is driven to spray out of the fluid-conveying pipe along the base axis by the pressured airflow injected from the central channel, the rotary spray head is driven to rotate by the pressured airflow injected from the helical air channel, the spray direction of the fluid flowing originally along the base axis is altered by the pressured airflow injected from the helical conductive channel, and thus the fluid is sprayed out of the rotary spray head in a rotary manner.

2. The air-conductive rotary sprinkler of claim 1, wherein the air-conductive rotary sprinkling device further includes a bearing having an inner ring sleeved onto the inner rotary tube and an outer ring sleeved into the main housing tube.

3. The air-conductive rotary sprinkler of claim 1, wherein the air-conductive rotary sprinkling device further includes an extension tube and a guide pipe, in which the extension tube is connected with the main housing tube and the fluid supply assembly, the guide pipe connected with the extension tube penetrates the inner rotary tube, and the guide pipe allows the fluid-conveying pipe to penetrate.

4. The air-conductive rotary sprinkler of claim 1, wherein the dust-collecting cover further includes a main cover body fixed to the main housing tube.

5. The air-conductive rotary sprinkler of claim 1, wherein the dust-collecting cover further includes a tightening member for tightly fixing the dust-collecting cover to the main housing tube.

6. The air-conductive rotary sprinkler of claim 1, wherein the dust-collecting cover is a divergent-type dust-collecting cover.

7. The air-conductive rotary sprinkler of claim 1, wherein the dust-collecting cover is a convergent-type dust-collecting cover.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present invention will now be specified with reference to its preferred embodiment illustrated in the drawings, in which:

(2) FIG. 1 is a schematic view of a conventional rotary liquid-spraying apparatus;

(3) FIG. 2 is a schematic perspective view of a first embodiment of the air-conductive rotary sprinkler in accordance with the present invention;

(4) FIG. 3 is a schematic cross-sectional view of FIG. 2;

(5) FIG. 4 is an enlarged view upon a portion of FIG. 3;

(6) FIG. 5 is a schematic exploded view of a spray-head casing and a guide plug for the air-conductive rotary sprinkler of FIG. 2;

(7) FIG. 6 demonstrates the spray direction change of the fluid at the rotary spray head, affected by a pressured airflow injected from a sideway channel;

(8) FIG. 7 demonstrates another angling of the rotary spray head, driven by the pressured airflow;

(9) FIG. 8 is a schematic perspective view of a second embodiment of the air-conductive rotary sprinkler in accordance with the present invention;

(10) FIG. 9 is a schematic cross-sectional view of FIG. 8;

(11) FIG. 10 is a schematic perspective view of a third embodiment of the air-conductive rotary sprinkler in accordance with the present invention; and

(12) FIG. 11 is a schematic cross-sectional view of FIG. 10.

DESCRIPTION OF THE PREFERRED EMBODIMENT

(13) The invention disclosed herein is directed to an air-conductive rotary sprinkler. In the following description, numerous details are set forth in order to provide a thorough understanding of the present invention. It will be appreciated by one skilled in the art that variations of these specific details are possible while still achieving the results of the present invention. In other instance, well-known components are not described in detail in order not to unnecessarily obscure the present invention.

(14) Refer now to FIG. 2 through FIG. 5, in which FIG. 2 is a schematic perspective view of a first embodiment of the air-conductive rotary sprinkler in accordance with the present invention, FIG. 3 is a schematic cross-sectional view of FIG. 2, FIG. 4 is an enlarged view upon a portion of FIG. 3, and FIG. 5 is a schematic exploded view of a spray-head casing and a guide plug for the air-conductive rotary sprinkler of FIG. 2.

(15) As shown, the air-conductive rotary sprinkler 100 includes an air-conductive rotary sprinkling device 1 and a fluid supply assembly 2.

(16) The air-conductive rotary sprinkling device 1 includes a main housing tube 11, two bearings 12a and 12b, an inner rotary tube 13, a rotary spray head 14, an extension tube 15, a guide pipe 16 and a dusk-proof ring 17. The bearing 12a includes an outer ring 122a, an inner ring 122a and a plurality of balls 123a. The outer ring 121a is sleeved into the main housing tube 11, the inner ring 122a is located inner to the outer ring 121a in a rotary manner, and the balls 123a are free to roll in the ring space form between the inner ring 122a and the outer ring 121a, such that the inner ring 122a can be relatively rotational with respect to the outer ring 122b as well as the balls 123b. The bearing 12b is similar to the bearing 12a in structuring, and thus details for the bearing 12b are omitted herein.

(17) By providing the two bearings 12a and 12b to support the inner rotary tube 13 at both ends thereof inside the main housing tube 11, so that the inner rotary tube 13 can thus perform shaft rotation about the base axis X inside the fixed main housing tube 11. The inner rotary tube 13 further has an air-conveying channel (not labeled in the figure).

(18) The rotary spray head 14 includes a spray-head casing 141 and a guide plug 142. The spray-head casing 141 screwed to engage the inner rotary tube 13 further has an accommodation room S communicative in space with the air-conveying channel.

(19) The guide plug 142 screwed to mount inside the accommodation room S further has a helical actuating groove 1421, a helical conductive groove 1422, a central channel 1423 and a sideway channel 1424.

(20) The helical actuating groove 1421 is paired with an inner wall of the spray-head casing 141 so as to form a helical air channel AF1 communicative in space with the air-conveying channel. The helical conductive groove 1422 located in a symmetric manner with the helical actuating groove 1421 is paired with an inner wall of the spray-head casing 141 so as to form a helical conductive channel AF2 communicative in space with the air-conveying channel.

(21) The central channel 1423 extends along the base axis X and is communicative in space with the air-conveying channel. The sideway channel 1424 extends along an air-injection direction FD (labeled in FIG. 6) crossing the base axis X and is communicative in space with the helical conductive groove 1422.

(22) The extension tube 15 engage with the main housing tube 11 and the fluid supply assembly 2 by a screwing manner. The guide pipe 16 is screwed to connect the extension tube 15 and penetrates through the inner rotary tube 13. Also, the fluid-conveying pipe 221 penetrates the guide pipe 16

(23) The dust-proof ring 17 is sleeved onto a front end of the fixed main housing tube 11 and contacts elastically at the spray-head casing 141, such that foreign dusts or particles can be prevented from entering the fixed main housing tube 11. Thus, the rotation of the bearings 12a and 12b can be ensured.

(24) The fluid supply assembly 2 includes a spray gun 21 and a fluid supply apparatus 22. The spray gun 21 engages the main housing tube 11 so as to send a pressured airflow into the air-conveying channel. The fluid supply apparatus 22 is connected with the spray gun 21 and has a fluid-conveying pipe 221 penetrating through both the air-conveying channel and the central channel 1423.

(25) Refer now to FIG. 4, FIG. 6 and FIG. 7, in which FIG. 6 demonstrates the spray direction change of the fluid at the rotary spray head affected by a pressured airflow injected from a sideway channel, and FIG. 7 demonstrates another angling of the rotary spray head driven by the pressured airflow.

(26) As shown, the fluid in the fluid-conveying pipe 221 would be driven by the pressured airflow from the central channel 1423 to spray out of the pipe along the base axis X. The pressured airflow from the helical air channel AF1 drives the rotary spray head 14 to rotate. The pressured airflow from the helical conductive channel AF2 is introduced to alter the spray direction of the fluid originally flowing along the base axis X so as to spray the fluid out of the rotary spray head 14 in a rotary manner. As shown in FIG. 6 and FIG. 7, while the pressured airflow from the helical air channel AF1 rotates the rotary spray head 14, the spray direction of the fluid is simultaneously affected by the pressured airflow from the helical conductive channel AF2. Further, the rotation of the rotary spray head 14 would be in a rotary spraying pattern.

(27) As stated above in the background section, currently in the art, though the technology of the bent flexible pipe can contribute successfully to build a rotary spraying pattern of the fluid, yet the manufacturing thereabout is much complicated and vulnerable to be distorted by foreign forcing, and also the apparatus using the bent flexible pipe needs tedious assembling steps. On the other hand, the present invention utilizes the helical actuating groove 1421 and the helical conductive groove 1422 of the guide plug to pair corresponding inner walls of the spray-head casing 141 so as to form the helical actuating channel AF1 and the helical conductive channel AF2, respectively. Thereby, the pressured airflows flowing through the helical actuating channel AF1 and the helical conductive channel AF2 can be injected to drive the rotary spray head 14. Further, the pressured airflow from the sideway channel 1424 communicative in space with the helical conductive groove 1421 can be injected by targeting the base axis in an oblique manner, such that the spray direction of the fluid out of the central channel 1423 can be altered so as to formulate a rotary spraying. For the present invention does not apply the bent flexible pipe to formulate the rotary spraying, thus the present invention can simplify the manufacturing, reduce the cost, and provide a solid structure to increase the stability and the endurance.

(28) Refer now to FIG. 3, FIG. 4, FIG. 8 and FIG. 9, in which FIG. 8 is a schematic perspective view of a second embodiment of the air-conductive rotary sprinkler in accordance with the present invention, and FIG. 9 is a schematic cross-sectional view of FIG. 8. As shown, compared to the aforesaid first embodiment of the air-conductive rotary sprinkler 100, this second embodiment of the air-conductive rotary sprinkler 200 further includes a dust-collecting cover 3. The dust-collecting cover 3 includes a main cover body 31, a connection pipe 32 and a tightening member 33. In particular, the dust-collecting cover 3 of this second embodiment is a divergent-type dust-collecting cover.

(29) The main cover body 31 has an accommodation portion 311 and a suck-in opening 312, in which the accommodation portion 311 is to couple the main housing tube 11 of the air-conductive rotary sprinkling device 1 and provides an accommodation room 3111 for accommodating thereinside the rotary spray head 14. The tightening member 33 is to fix the main housing tube 11 firmly to the accommodation portion 311. In this embodiment, the tightening member 33 is screwed to fix the main housing tube 11.

(30) The connection pipe 32 connected with the main cover body 31 is extended for further connecting a vacuum pipe. The connection pipe 32 has a dent portion 321 for accommodating a hook (not labeled in the figure) of the spray gun 21. In practice, since the air-conductive rotary sprinkler 200 has the dust-collecting cover 3 having the connection pipe 32 to connect further a vacuum, so the air flow injected by the air-conductive rotary sprinkling device 1 as well as the dust disturbed by the air flow can be sucked away so as to provide immediate cleanness and convenience.

(31) Refer now to FIG. 3, FIG. 4, FIG. 10 and FIG. 11, in which FIG. 10 is a schematic perspective view of a third embodiment of the air-conductive rotary sprinkler in accordance with the present invention, and FIG. 11 is a schematic cross-sectional view of FIG. 10. As shown, compared to the aforesaid first embodiment of the air-conductive rotary sprinkler 100, this third embodiment of the air-conductive rotary sprinkler 300 further includes a dust-collecting cover 4. The dust-collecting cover 4 includes a main cover body 41, a connection pipe 42 and a tightening member 43. In particular, the dust-collecting cover 4 of this second embodiment is a convergent-type dust-collecting cover.

(32) The main cover body 41 has an accommodation portion 411 and a suck-in opening 412, in which the accommodation portion 411 is to couple the main housing tube 11 of the air-conductive rotary sprinkling device 1. The tightening member 43 is to fix the main housing tube 11 firmly to the accommodation portion 411. In this embodiment, the tightening member 43 is screwed to fix the main housing tube 11.

(33) The connection pipe 42 connected with the main cover body 41 is extended for further connecting a vacuum pipe. The connection pipe 42 has a dent portion 421 for accommodating a hook (not labeled in the figure) of the spray gun 21. In practice, since the air-conductive rotary sprinkler 300 has the dust-collecting cover 4 having the connection pipe 42 to connect further a vacuum, so the air flow injected by the air-conductive rotary sprinkling device 1 as well as the dust disturbed by the air flow can be sucked away so as to provide immediate cleanness and convenience.

(34) In addition, the aforesaid air-conductive rotary sprinkler 200 includes the accommodation room 3111 to accommodate the rotary spray head 14, such that the vacuum flow through the dust-collecting cover 3 can bypass the rotary spray head 14 and thus possible contamination to the rotary spray head 14 can be reduced to a minimum. On the other hand, the air-conductive rotary sprinkler 300 is to accommodate the rotary spray head 14 directly inside the main cover body 41, such that the volume of the suck-in opening 412 can be reduced and thus the vacuum range of the dust-collecting cover 4 can be much focused.

(35) While the present invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be without departing from the spirit and scope of the present invention.