RU2642790C2 - Jet-centrifugal method to obtain flows of coarse-grained suspensions - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: jet-centrifugal device to obtain flows of coarse-grained suspensions comprises a vessel with a liquid, a tap supplying the liquid into a channel with a filter and a gland associated with a rotating channel and a branch pipe. At the outlet end of the branch pipe, a calibrated opening is made, located at a distance from the rotation axis to form a jet formed by the calibrated opening. The filter is mounted in the vessel bottom in the form of a mesh with cell sizes smaller than the calibrated opening diameter. A flow breaker is applied in the device, made in the form of a valve mounted after the gland on the end of the rotated channel opening to a chamber, from which two similar contrary-divergent channels pass, connected at right angle to the horizontal outlet channels connected via flexible hoses with branch pipes while changing their inclination angle relative to the channel rotation axis. Controlling the valve manufactured in the form of an elastic cylindrical rod rigidly built into a cylindrical mandrel guided by a bushing axial with respect to the channel, sliding in thrust grooves, is carried out by a thrust by specifying certain values of the reciprocating stroke of the mandrel with openings made in it for the outlet of the branch pipes. The inclination angle between the branch pipes is set by means of a ligament ensuring the equality of distances from their openings to the channel rotation axis.

EFFECT: eliminating losses of the material used during pause periods of its use and applicability expansion of the device for supplying coarse-grained suspensions.

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Description

The invention relates to the field of inkjet technology and can be used in foundry, construction equipment and design.

Typically, a droplet stream is obtained by spraying an appropriate solution. Known mechanical, electrical, gas, ultrasonic methods of spraying liquid [1].

A common disadvantage of these methods [1] is a significant variation in the sizes and trajectories of the droplets formed.

A known droplet generator used to obtain a monodisperse stream of droplets [2], comprising a housing, a bottom with an outlet, a reservoir for the working fluid with a capillary nozzle located in the inlet of the bottom, rod and nozzle for supplying compressed air.

The disadvantage of the method [2] is the need to use a compressor (ultrasonic vibrations, electro-hydraulic shock, etc.) to set the desired speed and trajectory of the resulting fluid flow.

These disadvantages are eliminated by the use of a jet-centrifugal method of obtaining a stream of drops, the closest to the essence of the claimed invention, the prototype [3]. The method is implemented by means of a device containing a dispenser, a tap, a filter that purifies the liquid from random sorin, an oil seal connecting the stationary part of the device with its rotating part, containing a rotator, a collet connecting the rotator to the liquid supply channel and a pipe with a calibrated hole made at its end, located at a distance from the axis of rotation and forming a jet that breaks up into droplets moving along the surfaces of the cone.

The disadvantage of [3] is environmental pollution with loss of material used when the rotator is turned off during the shutdown period due to changes in the device parameters.

The aim of this invention is to eliminate the loss of material used during periods of pause in its use and to expand the applicability of the device for feeding flows of coarse suspensions.

To achieve this goal, in the known jet-centrifugal method of obtaining a fluid flow [3], a jet-centrifugal device is used, which contains a dispenser, a tap that cleans the liquid from random sorin, a filter, an oil seal connecting the stationary part of the device with its rotating part containing a rotator, collet connecting the rotator with the fluid supply channel, and the pipe with a calibrated hole made at its end located at a distance from the axis of rotation and forming a jet that breaks up into droplets, moving located on the surfaces of the cone, the filter is mounted in the bottom of the vessel in the form of a grid with mesh sizes smaller relative to the diameter of the calibrated hole, and the use of a flow interrupter. The flow interrupter comprises a valve mounted after the gland at the end of the rotatable channel exiting into the chamber. Two identical oppositely diverging channels are brought out of the chamber, connected at right angles to the horizontal output channels connected by flexible hoses to the pipes with a variable angle of inclination relative to the axis of rotation of the channel. The control valve, made in the form of an elastic cylindrical rod, rigidly mounted in the cylindrical axial channel guided by the sleeve of the mandrel, sliding in the grooves of the thrust, carry out the thrust with the task of setting a certain value of the reciprocating stroke of the mandrel with holes made in it for the outlet pipes. The angle of inclination between the nozzles with holes is set by means of a bundle that ensures equal distances from their holes to the axis of rotation of the channel.

To explain the device of FIG. 1 is a schematic view of the device, where 1 is a vessel with a suspension, 2 is a strainer, 3 is a tap, 4 is an inlet vertical channel, 5 is a flexible hose, 6 is a suspension flow, 7 is an inlet horizontal channel, 8 is an oil seal, 9 is a rotating channel, 10 - a bearing, 11 - a rotator support, 12 - a rotation axis, 13 - a rotator, 14 - a camera, 15 and 16 - radially diverging channels (see Fig. 2), 17 and 18 - horizontal output channels, 19 and 20 - flexible output hoses, 21 and 22 - nozzles, 23 - valve, 24 - pusher, 25 - sleeve, 26 and 27 - holes in the pusher for nozzles, 28 - angle between the axes of the nozzles, 29 - reg angle cutter, 30 - the direction of movement of the rods -31 and 32, the grooves of the rods 33 and 34, the bottom of the sleeve - 35 (see Fig. 3).

In FIG. 2 shows a schematic axial section in the plane of the nozzles with an average position of the movement 30 of the rods 31 and 32.

In FIG. 3 shows a schematic axial section of the device in the area of the chamber 14 with the valve 23 fully withdrawn from the chamber.

The device operates as follows. From a vessel with a suspension 1 through a strainer 2 mounted in the bottom of the vessel in the form of a mesh with mesh sizes smaller relative to the diameter of the calibrated hole, when opening the valve 3, the flow of suspension 6 through a system of channels and flexible hoses 4, 5, 7, 9 enters a chamber 14 that separates the liquid into streams through radially diverging channels 15 and 16 to provide overlap and prevent vibration of the device. The fluid is directed into the channels 17 and 18 through the flexible outlet hoses 19 and 20, falling into the nozzles 21 and 22. The interruption of the fluid flow to eliminate losses of the used material during the periods of pauses is provided by a valve 23 made in the form of an elastic cylindrical rod rigidly mounted in a cylindrical axial guide channel sleeve 25 mandrel. The movement of the valve 23 is carried out by means of a pusher 24 with holes 26 and 27 to accommodate the nozzles 21 and 22. The angle of inclination 28 between the axes of the nozzles is set by the angle adjuster 29. The movement of the rods 31 and 32 containing grooves 33 and 34 allows the pusher 24 to move the valve to the stop into the bottom of the sleeve 35 (see. Fig. 3).

During the operation of the device (see Fig. 3), the valve 23 is open. The thrusts 31 and 32 are in the extreme right position, allowing the flow of fluid to pass into the channels with spraying under the action of centrifugal forces. At the time of completion of the thrust 31 and 32 are transferred to the leftmost position. In this case, under the action of the pusher 24, the fluid supply is stopped, preventing the possibility of losses when the rotating nozzles 21 and 22.

In the future, if necessary, spraying can be continued by returning the rods 31 and 32 to their original (extreme right) position, or work can be stopped by turning off the rotator 13.

The examples of application of the present invention show its usefulness for applying coarse-grained suspensions in construction — during plastering, if necessary, supplying suspensions to hard-to-reach areas, during paintwork with the application of a primer on products; in metallurgy - for the recovery of the lining of smelting furnaces.

The present invention satisfies the criteria of novelty, since when determining the level of technology, no means have been found that have characteristics that are identical (that is, matching the functions performed by them and the form in which these signs are performed) to all the signs listed in the claims, including the purpose of the application.

The present invention has an inventive step, because it has not been identified technical solutions having features that match the distinguishing features of this invention, and not known the influence of distinctive features on the specified technical result.

The claimed technical solution can be implemented in foundry, construction equipment and design.

Information sources

1. Pages D.G., Koryagina A.A., Lamm E.L. Sawing devices in the chemical industry. M., "Chemistry", 1975, 199 pp.

2. Gusev V.N., Litvan A.B., Mazanko B.P., Plushchevsky M.B. Drop generator. // A.S. No. 764729. Application: 2537362, 09.29.77. Published: 09/23/80. Bull. Number 35.

3. Karikh F.G., Karikh A.F. A method of obtaining a stream of drops. // Patent of Russia No. 1834714. Application: 4888996, 12/10/1990. Published: 08/15/1993.

Claims (1)

A jet-centrifugal device for producing coarse-suspension slurry flows, containing a vessel with liquid, a valve supplying liquid to a channel with a filter, an oil seal connected to a rotating channel and a pipe, at the outlet end of which a calibrated hole is made, located at a distance from the axis of rotation to form a jet formed by a calibrated hole, characterized in that the filter is mounted in the bottom of the vessel in the form of a grid with mesh sizes smaller relative to the diameter of the calibrated hole, and applied using a flow interrupter in the form of a valve mounted after the stuffing box on the end of the rotatable channel exiting into the chamber, from which two identical oppositely diverging channels are brought out, connected at right angles to the horizontal output channels connected by flexible hoses with nozzles with a variable angle of inclination relative to their axis the rotation of the channel, and the control of the valve, made in the form of an elastic cylindrical rod, rigidly mounted in a cylindrical guided axial channel sleeve rims A slide sliding in the grooves of the thrust is carried out by thrust with the task of setting a certain magnitude of the reciprocating stroke of the mandrel with holes made in it for the nozzles to exit, the angle of inclination between which is set by means of a bundle that ensures equal distances from their holes to the axis of rotation of the channel.

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