SU1065037A1 - Apparatus for pulsating feed of liquid - Google Patents

Abstract

A PULSING FLUID SUPPLY DEVICE, comprising a housing with channels for supplying liquid and compressed air, a cylindrical cavity with a stop rod disposed therein mounted for axial movement, and a material nozzle with an opening for supplying liquid and compressed air, characterized in that the purpose of increasing the processing efficiency of rusty surfaces due to the supply of anticorrosive liquid in separate monolithic portions, the device is equipped with axially displaced axial movement current piston with buffer springs, while the cylindrical cavity is communicated by means of annular grooves made in the rod with an air channel, the material nozzle is made in the form of a tube installed at the end of the stem, the channel of which is in communication with the pre-piston part of the cylindrical cavity, and air nozzle, communicated with zaporshnevoy part of the cylindrical cavity.

Description

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phi: The invention relates to a protective coating technique, in particular to devices for applying anticorrosive compositions. A device for applying anticorrosive compositions containing a container for applied material, connected to a source of compressed air, and a pistol consisting of a body with a nozzle and a handle with channels for supplying compressed air and the applied material {fj. However, the known device is characterized by an insufficiently high surface treatment efficiency due to the impossibility of applying liquid in separate portions. The closest to the technical essence of the invention is a device for pulsating fluid supply, comprising a housing with channels for supplying a liquid and compressed air, cylindrical a cavity, a porous stem mounted for axial movement, and a material nozzle with an opening for supplying fluid and air {2J. However, this device is characterized by an inadequate surface treatment efficiency associated with spraying portions of a liquid as it leaves the material nozzle. The purpose of the invention is to improve the processing efficiency of rusty surfaces with anticorrosive liquids. This goal is achieved by having a device comprising a housing with channels for supplying liquid and compressed air, a cylindrical cavity with an axially displaceable shaft installed in it, and a material nozzle with a hole for supplying fluid and compressed air, equipped with an axially displaceable piston on the rod with buffer springs, while the cylindrical cavity with bschena formed by annular grooves in the rod with the air passage, a material formed as a nozzle mounted on the end of the rod tube, the channel which communicates with predporshnevoy part of the cylindrical cavity, and a housing configured ohva TYVA air nozzle tube communicating with the cylindrical part zaporshnevoy cavity. Fig. 1 shows a device, a sectional view; Fig. 2 is a diagram of the connection of the device to a tank with liquid. The device for pulsating fluid supply comprises a housing 1 with a rod 2 placed therein with the possibility of axial movement, on which a piston 3 is mounted with the possibility of axial movement with buffer springs 4 and 5 placed in a cylindrical cavity 6 connected by a channel 7 and channel 8 with a compressed channel air 9 through the annular grooves 10 and 11 of the rod 2, on the end of which there is a tube 12 with an orifice hole 13 for supplying fluid from the channel 14 and a hole 15 for feeding air from the piston portion of the cavity b, having a groove 16, forming together with the head 17, the air nozzle 18 connected by the channel 19 through the bore 20 in the rod 2 to the back part of the cavity 6. The device is additionally equipped (FIG. 2) with a liquid tap 21 and a tap 22 for compressed air mounted on the handle 23 of the housing 1 and supplying fluid and air through sleeves 24 and 25 from a tank with fluid 26 equipped with a hydraulic mixer 27, a stopper 28 with air inlet and outlet nipples 29 and 30, a pressure gauge 31, a safety valve 32 and a fitting for supplying fluid 33. The device operates as follows. in a way. in the position shown in Fig., the rod is in the left position. The liquid from the channel 14 flows through the hole 13 into the channel of the tube 12, filling part of the space. At this time, the compressed air from the channel 9 enters through the annular groove 10 in the rod 2, the channel 7 into the pre-piston part of the cavity 6 and moves the piston 3 to the right. At the same time, air is displaced from the zaporshnevoy part of the cavity 6 and passes through the groove 20 of the rod 2 into the channel 19 and then into the air nozzle 18. After hitting the buffer spring 5, the piston moves the piston} 2 to the right position. Moving the rod 2 to the right position leads to shutting off the fluid supply to the pipe 12, closing the channel 19, which causes the air supply to the air nozzle 18 to stop and open the opening 15 of the tube 12 to supply air from the cavity of the cavity 6. In this position The air from the channel 9 through the annular groove 11 and the channel 8 passes into the dead-end part of the cavity 6 and moves the piston 3 to the left position. At the same time air from the pre-piston part of the cavity 6 enters the tube 12 and. accelerates through the channel of the tube 12 portion of the liquid. Having hit the buffer spring 4, the piston 3 moves the rod 2 back to the left position. Then the cycle is repeated.

By supplying the fluid in separate portions and creating pressure areas at the outlet of the physical nozzle alternating with the im-. the pressure pulses at the exit of the air nozzle, the liquid portions emanating from the material nozzle are not sprayed, which ensures

they have greater kinetic energy and the possibility of deeper processing of the rust layer.

This device can reduce costs when processing rusty steel surfaces and increase the durability of coatings.

Claims (1)

A device for pulsating fluid supply, comprising a housing with channels for supplying liquid and compressed air, a cylindrical cavity with a locking rod mounted therein, arranged for axial movement, and a material nozzle with an opening for supplying liquid and compressed air, characterized in that that, in order to increase the efficiency of processing rusty surfaces due to the supply of anticorrosive fluid in separate monolithic portions, the device is equipped with axial movement mounted on the rod with a buffer spring, while the cylindrical cavity is communicated by means of annular grooves made in the rod with an air channel, the material nozzle is made in the form of a tube installed on the end of the rod, the channel of which communicates with the pre-piston part of the cylindrical cavity, and the air nozzle enclosing the tube with an e-piston part of a cylindrical cavity. '' ... SU. „, 1065037