SU148673A1 - Nozzle for applying a thick and liquid lubricant in a sprayed state on the rubbing surfaces of parts - Google Patents

Description

Nozzles are known for applying a thick and liquid lubricant in a sprayed state to the sliding surfaces of parts in which an adjustable throttle of lubricant supply and a spray gun with a spiral air swirler are used. However, in these nozzles, the air supply is not controlled in accordance with the established lubricant supply, which causes excessive air flow.

In the proposed nozzle, this disadvantage is eliminated due to the use of a ball check valve located in the air duct and opened by the plunger rod, which is located: It was UNDER with a pressure of lubricant passing through an adjustable choke.

FIG. 1 shows a schematic of a general view; its view of the nozzle is shown in FIG. 2 is a section along the line A-A in FIG. one; in fig. 3 is a section along BB in FIG. 2

In the cylindrical bore of the nozzle body 1 there is a freely moving plunger 2, separating the cavities through which air and lubricant flow. The plunger rod 3 interacts with the ball 4, which, in the absence of lubricant pressure, blocks the output of the compressed air supplied to the nozzle under the action of air pressure and

springs 5. "Jf and p

As the lubricant enters, its pressure acts on the plunger and the latter, displacing the rod 3, presses the ball 4, which opens air into the surge chamber 6. As the plunger moves further, a hole opens through which the lubricant enters the central channel of the fitting 7. At the end of the bushing 8 a row of holes is arranged through which air flows from the chamber 6, then the passage through an annular gap formed by the collar of the sleeve 8 and the cylindrical part of the swirler 9. At the exit from the said gap air enters the channels located along screw lines with a large angle

No. 148673-2 lifting, which passes into the exit slit formed by the tapered bore of the sleeve 8 and the nozzle taper 7.

The lubricant through the holes connected to the central channel of the fitting 7 enters the annular cavity formed by the undercut of the swirler 9 and the cylindrical part of the fitting 7. Due to the pressure of the lubricant on the shoulder of the undercut, the swirler 9 exceeds the pressure of the air that presses this shoulder to the end of fitting 7, the swirl shifts and the lubricant enters the air stream swirling at the entrance to the annular shell 10, and due to the presence in the flow of centrifugal forces it is well sprayed.

When the lubricant inlet pressure to the nozzle decreases, the ball 4 under the action of air pressure and the spring 5 presses the rod 3 of the plunger 2, causing the latter to move and block the access of the lubricant to the central channel of the nozzle.

To change the lubricant plume, the angle of elevation of the screw lines forming the channels through which air flows with the conic taper of sleeve 8 and nozzle 7 remaining constant. At the same time, the angle of divergence of the lubricant plume increases as the angle of elevation decreases. But this angle also depends on the size of the gap 10.

Subject invention

Nozzle for applying a thick and liquid lubricant in a sprayed state to the chimney surfaces of the parts using an adjustable throttle of lubricant supply and spray gun with a spiral air swirler, characterized in that, in order to ensure an air supply in accordance with the established lubricant supply, it is equipped with in the air duct of the channel with a ball check valve opened by a plunger rod, a lubricant under pressure, which passes through an adjustable throttle.