Automatic rotating spray head of ship derusting machine

Abstract

The utility model discloses an autorotation sprayer of a ship derusting machine, which comprises a lower sleeve body, an upper sleeve body and a tubular shaft, the upper sleeve body is in threaded connection with the tail part of the upper end of the lower sleeve body, the lower part of the tubular shaft axially penetrates through the lower sleeve body, the upper end of the tubular shaft is inserted into the inner cavity of the upper sleeve body and is movably connected with the upper sleeve body, and two shaft shoulders are arranged on the outer side of the tubular shaft. A deep groove ball bearing and a tapered roller bearing are installed on the upper shaft shoulder and the lower shaft shoulder respectively, outer rings of the deep groove ball bearing and the tapered roller bearing are both connected with an inner cavity of the lower sleeve body in a matched and clamped mode, the lower end of the pipe shaft extends out of the bottom of the lower sleeve body and is provided with a nozzle, a plurality of inclined spraying holes are formed in the lower portion of the nozzle along the circumference, and spiral blades are welded in the pipe shaft. The spiral blade is arranged in the pipe shaft, and downward water flow impacts the spiral blade to generate torque opposite to water jet flow, so that the torque is reduced, the rotating speed of the nozzle is reduced, the jet flow form can be kept, atomization is reduced, and jet flow hitting power is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of spray head, concretely is automatic rotating spray head of ship rust removal machine. BACKGROUND

[0002] Because metal can have corrosion in the air, and rust phenomenon is more serious under the humid condition, therefore need to carry out the coating protection to the surface. The ship coating before wants to first remove rust, makes the surface good, can make the coating reach the expected effect. The ship rust removal is especially important in the ship repair industry, and is the representative of metal rust removal and coating. The ship usually adopts high pressure water jet to remove rust, and the abrasive is mixed in the water flow, the impact of high pressure water jet is used to add the grinding action of abrasive and the water pry action to destroy the adhesion of rust and coating to the steel plate, the spray head of water jet rust removal is usually pushed to realize self-rotation by the reaction force of water flow, and the rotation can improve the uniformity of spraying, the self-rotation spray head is driven by the strong reaction force of high pressure water flow, can cause the rotation speed of spray head to be very big, thereby causing the jet atomization, and the striking force of rust removal is reduced. SUMMARY

[0003] The utility model discloses a kind of automatic rotating spray heads of ship rust removal machine, to solve the problem raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme: automatic rotating spray head of ship rust removal machine, including lower sleeve body, upper sleeve body and pipe shaft, the upper sleeve body is screwed with the upper end tail portion of lower sleeve body, the lower part of pipe shaft is axially penetrated lower sleeve body, the upper end of pipe shaft is inserted into the inner chamber of upper sleeve body and is movably connected with it, the outer side of pipe shaft is equipped with two shaft shoulders, and deep groove ball bearing and tapered roller bearing are respectively installed at the upper and lower shaft shoulders, the outer ring of deep groove ball bearing and tapered roller bearing is all matched with the inner chamber of lower sleeve body and is clamped, the lower end of pipe shaft is stretched out from the bottom of lower sleeve body and is equipped with nozzle, the lower part of nozzle is equipped with multiple inclined spray holes along circumference, and spiral blade is welded in the pipe shaft, when working, the torque generated by spiral blade impacted by water flow and the torque generated by water spray reaction force of inclined spray hole are opposite in direction.

[0005] Preferably, the upper end of the pipe shaft is provided with a plurality of ring grooves, and a sealing ring matched with the ring grooves is clamped in the ring grooves.

[0006] Preferably, the lower end of the upper sleeve body is pressed on the side surface of the outer ring of the deep groove ball bearing.

[0007] Preferably, the lower part of the nozzle is provided with a bottom plug screwed and inserted therein, and the upper part of the bottom plug is provided with a tapered tip for guiding flow.

[0008] Compared with the prior art, the utility model discloses a spiral blade is arranged in the pipe shaft, and the downward water flow impacts the spiral blade to generate a torque opposite to water jet, thereby reducing the size of the combined torque and the rotating speed of the nozzle, which is beneficial to maintaining the form of the jet, reducing atomization and improving the jet striking force. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 It is the sectional structure schematic diagram of the utility model;

[0010] Fig. 2 It is the installation schematic diagram of spiral blade;

[0011] Fig. 3 It is the three-dimensional structure schematic diagram of nozzle.

[0012] In the drawing: 1, lower sleeve body, 2, upper sleeve body, 3, pipe shaft, 4, deep groove ball bearing, 5, tapered roller bearing, 6, sealing ring, 7, nozzle, 8, bottom plug, 9, inclined spray hole, 10, spiral blade. DETAILED DESCRIPTION

[0013] The technical scheme in the embodiments of the utility model will be apparently and completely described below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0014] Please refer to Figs. 1-3 The utility model provides a kind of technical scheme: the automatic rotating spray head of ship deruster, including lower sleeve body 1, upper sleeve body 2 and pipe shaft 3, upper sleeve body 2 is screwed with the upper end tail portion of lower sleeve body 1, and the spray head is installed and fixed by lower sleeve body 1.The lower part of pipe shaft 3 is axially penetrated lower sleeve body 1, and the upper end of pipe shaft 3 is inserted into the inner cavity of upper sleeve body 2 and is movably connected with it, and the upper end of pipe shaft 3 is equipped with multiple ring grooves, and the sealing ring 6 compatible is clamped in ring groove, and the upper end of upper sleeve body 2 is connected with high-pressure pipeline, and sealing ring 6 seals the clearance between pipe shaft 3 and the inner cavity of upper sleeve body 2.The outer side of pipe shaft 3 is equipped with two shaft shoulders, and deep groove ball bearing 4 and tapered roller bearing 5 are installed at the upper and lower shaft shoulders respectively, and the outer ring of deep groove ball bearing 4 and tapered roller bearing 5 is clamped with the inner cavity of lower sleeve body 1, and the lower end of upper sleeve body 2 is pressed on the outer ring side surface of deep groove ball bearing 4, and deep groove ball bearing 4 and tapered roller bearing 5 provide axial and radial constraint for pipe shaft 3, while reducing the rotating friction of pipe shaft.

[0015] The lower end of the pipe shaft 3 extends from the bottom of the lower sleeve body 1 and is provided with a nozzle 7, the lower part of the nozzle 7 is provided with a plurality of inclined spray holes 9 along the circumference, the pipe shaft 3 is welded with helical blades 10, when working, the helical blades 10 generate a torque opposite to the torque generated by the water flow impact and the torque generated by the water spray reaction force, that is, through an opposite torque to reduce the torque generated by the water jet reaction force, so as to reduce the combined torque, reduce the rotating speed of the nozzle 7 and the pipe shaft 3, the lower part of the nozzle 7 is provided with a bottom plug 8 screwed and inserted therein, the upper part of the bottom plug 8 is provided with a tapered tip for guiding flow, the tapered tip is used for guiding the water flow from top to bottom to each inclined spray hole 9.

[0016] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic rotating spray head of a ship rust removal machine, comprising a lower sleeve body (1), an upper sleeve body (2) and a pipe shaft (3), the upper sleeve body (2) is screwed with the upper end tail of the lower sleeve body (1), characterized in that: The lower part of the pipe shaft (3) axially penetrates the lower sleeve body (1), the upper end of the pipe shaft (3) is inserted into the inner cavity of the upper sleeve body (2) and is movably connected with the upper sleeve body (2), the outer side of the pipe shaft (3) is provided with two shaft shoulders, the upper and lower shaft shoulders are respectively provided with a deep groove ball bearing (4) and a tapered roller bearing (5), the outer rings of the deep groove ball bearing (4) and the tapered roller bearing (5) are matched and clamped with the inner cavity of the lower sleeve body (1), the lower end of the pipe shaft (3) extends from the bottom of the lower sleeve body (1) and is provided with a nozzle (7), the lower part of the nozzle (7) is provided with a plurality of inclined spray holes (9) along the circumference, the pipe shaft (3) is welded with a helical blade (10), and the torque generated by the helical blade (10) under the impact of water flow is opposite to the torque direction generated by the reaction force of the inclined spray hole (9).

2. An automatic rotating spray head for a ship's rust removal machine according to claim 1, characterized in that: The upper end of the pipe shaft (3) is provided with a plurality of ring grooves, and the ring grooves are clamped with matched sealing rings (6).

3. An automatic rotating spray head for a ship rust removal machine according to claim 2, characterised in that: The lower end of the upper sleeve body (2) is pressed on the side surface of the outer ring of the deep groove ball bearing (4).

4. An automatic rotating spray head for a ship rust removal machine according to claim 3, characterised in that: The lower part of the nozzle (7) is provided with a bottom plug (8) inserted therein by screwing, and the upper part of the bottom plug (8) is provided with a tapered tip for guiding flow.

Images