SU1051777A2 - Device for spraying and applying powder-like materials - Google Patents

Abstract

DEVICE FOR SPRAYING AND APPLICATION OF POWDERED MATERIALS by author. St. N 771968, characterized in that, in order to expand the technological possibilities of the network, due to the adjustment of the flare opening, it is equipped with a nozzle containing a stopper mafi6y, a movable cylinder and a tip, the internal cavity of which is connected to the mixing cavity and made in the form of a confusion-diffuser nozzle with a neck — between the confuser and a diffuser, and on the outside of the tip there is a fixing protrusion and a thread, which is coupled with a movable cylinder from the fixing protrusion to the lock washer mounted between the hollow cylinder and the tip. (L

Description

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SP

1B 20 PP13 12

The invention relates to devices for spraying and applying powdered materials with triboelectric charging of particles.

Basically invention auth. St. No. 771968, describes a device comprising a housing, a hollow cylinder, a barrel mounted therein for electrically charging a powder, a backplate with a channel for feeding a powder-air mixture, made with an internal cavity in the form of a truncated cone, in which the initial 4acfb trunk is located, with a conical breaker and ribs that pass to the cylindrical part of the barrel, located on it along a helical line and form channels with a hollow cylinder for the passage of powder, and at the end of the final part of the barrel are parabolic a notch with a fairing in the center of the mixing cavity forming the end sections of the ribs and the cylinder This device has a low productivity when applying powders on flat surfaces of large sizes, since the torch has a small-diameter directed jet, while it is not sufficiently formed at the outlet, as some streams have the direction of rotation around its axis, preventing them from merging. The purpose of the additional invention is to expand the technological capabilities by providing adjustment of the flare opening. The goal is achieved by the fact that the device for spraying and applying powdery materials according to the invention is provided with a nozzle containing a lock washer, a movable cylinder and a tip, the internal cavity of which is communicated with the mixing cavity and made in the form of a confuser-diffuser nozzle with a neck between the confuser and a diffuser, and on the outer side of the tip there is a fixing protrusion and a thread, associated with a movable cylinder from the fixing protrusion to the lock washer, hydrochloric th e between the hollow cylinder and the ferrule. The drawing shows the proposed device, a General view in section. The device consists of a pad 1 with an internal cavity 2 in the form of a truncated cone in communication with channel 3 for feeding the powder-air mixture. The butt plate 1 at the interface with the hollow cylinder 4 forms a distribution cavity 5, inside of which there is an initial part of the barrel 6 with a conical divider 7 and guide ribs 8, which pass over the cylindrical part of the barrel 6 into the walls 9 of the channels 10. At the opposite end of the barrel 6 a parabolic recess 11 is made at the end, with a fairing 12 which, with the end portions of the fins 13 of the walls 9 of the channels 10, form a mixing cavity 14. The dielectric barrel 6 is mounted in a hollow cylinder 4, which is housed in a metal housing 15. With The messenger cavity 14 communicates with the inner cavity of the tip 16, screwing onto the hollow cylinder 4 through the locking washer 17. The tip 16 on the outer side has a locking protrusion 18 and a running thread 19, and the inner cavity of the tip is made in the form of a truncated cone-confuser 20 passing through neck 21 in the reverse cone-diffuser 22. On the outer side of the tip 16 is mounted a movable cylinder 23, running along the thread, from the locking washer 17 until the locking protrusion 18 and providing adjustment of the torch from the maximum covered to jetlike. The device works as follows: the powder-air mixture is fed into the distribution cavity 5 through the channel 3 of the butt plate 1. In the distribution cavity 5, the stream of the powder-air mixture changes shape, and then the flow and powder particles are broken by the divider 7 and ribs g into the smaller ones are directed by ribs 8 to electrifying channels 10. The crushed particles of isolated streams acquire charge from the wall 9 of channels 10. At the exit of the channels 10, the rotating separate flows in the mixing cavity 14 are combined into one with confusion om 20, compressed in the neck 21, and then are expanded in a diffusor 22. Adjustment of the maximum flame disclosure to the disclosed strueobraznogo produced .peremescheniem moving cylinder 23 along the thread 19 on the outer side of the tip 16 of the locking washer 17 to the locking protrusion 18.

31051777

- The device has a coverage area of color-. The capacity of the device with the surface to be painted is 2-3 times more than the flat surfaces increases the prototype, depending on s 2-3 times, the application modes. Due to this pro

Claims (1)

SPRAY DEVICE AND APPLICATION OF POWDER MATERIALS by ed. No. 771968, characterized in that, for the purpose of l. expansion of technological feasibility due to adjustment of the flare opening; it is equipped with a nozzle containing a lock washer, a movable cylinder and a tip, the internal cavity of which is in communication with the mixing cavity and made in the form of a confuser-diffuser nozzle with a neck between the confuser and the diffuser, and the outer side of the tip has a locking protrusion and a running thread mated to a movable cylinder from a locking protrusion to a lock washer mounted between the hollow cylinder and tip. 5177 1 10517