Device for generating jet pulses

FIELD: spraying or atomizing.

SUBSTANCE: device comprises housing with the lid provided with even number of nozzles and disk deflector provided with odd number of ring recesses. Each ring recess has central corner that overlaps the outlet openings of adjacent nozzles.

EFFECT: improved design.

5 cl, 8 dwg

 

The invention relates to a device for generating pulses of liquid jets and can be used in hydraulic clearing stump wood from soil, bark, rot and shallow root systems, development accelerators for the transportation of floating materials, for example, when water transport of timber. The device can also be used for soil erosion, for example, by dredging, treatment and regulation of the rivers, when clearing roads and areas from dirt and zahlamleni, and when washing, transport and other means of dirt.

Known hydrogenerator copyright certificate №12114223 from 11.07.84, class MKI In 05 In 1/08, F 16 To 31/524, comprising a housing with a pipe of the fluid supply and discharge nozzles mounted in the housing drive shaft and spring-loaded off valves for shutoff of the outlet nozzles.

The disadvantage is the occurrence of water hammer inside the housing with tube feeding liquid, which affects the reliability of the whole hydraulic system, as well as insufficient liquid spray due to one-time (instantaneous) output pulses of liquid jets all the exhaust nozzles.

Known also hydrogenerator (see the article in the book: Vodovatova S.D., Kochetkov, P.P., polanin YA, Titova, A.D. Study of the transport method the barb thread generated pulse stream /Coll. papers No. 58. Vol. 2. Scientific work of the Department of forest engineering and mechanical departments. -Yoshkar-Ola: PLTI, 1968. - Pp.92-93), comprising a housing with a pipe of the fluid supply and one exhaust nozzle. Installed in the housing, the drive shaft and the disk cutter, cover with one nozzle, anti-friction seal between the disk cutter and cover. When this disk cutter to overlap the outlet nozzle is made with a circular cutout with a Central angle 120°. The cutter installed on the console drive shaft mounted on the opposite cover side of the housing via bearings. When adopted, the Central angle of the circular cutout in the web clipper duration full opening and full closing of the nozzle holes respectively equal to 0.33 s and 0.67 sec. This gives the opportunity with some approximation to reproduce the duration of the character pulse jets, obtained using electrohydraulic effect.

The disadvantage is the occurrence of water hammer inside the housing with tube feeding liquid, which affects the reliability of the entire hydraulic system hydrogenerator, as well as insufficient liquid spray due to one-time (single) output pulse jet fluid one issue is the principal nozzle.

The technical result - the reduction of water hammer in hydroimpulsing and increasing the fluid pressure in the inlet pipe of the fluid supply.

This technical result is achieved in that on the housing cover on the circumference there are an even number of discharge nozzles at the end of the disk cutter is made an odd number of circular cutouts, each annular cut is made with a Central angle providing closure of the outlet openings adjacent two nozzles.

A circular cut-out can be performed with full or partial overlapping of the outlet openings of two adjacent nozzles. Fold the relationship between the number of nozzles and the number of annular cuts known copyright testimony 1389863 from 25.06.86, which is a multiple of the ratio of the angular distance between the centers of adjacent outlet nozzles and holes on the disk cutter.

On a disk cutter, to increase frequency pulse jets made several circular cut-outs, and the ratio between the number of annular grooves and the number of nozzles is taken nonmultiple. For example, even when the number of nozzles(2, 4, 6, 8, 10 etc) number of circular cutouts can be made equal to 1, 3, 5, etc. When the number of notches greater than the number of nozzles, the length of the circular cut-out is assumed to be zero, i.e. cut into overtubes angular offset.

The width of the annular cut is made not smaller than the diameter of the outlet nasdaw.

At the ends of circular cutouts chamfer, for example, at an acute angle to the plane of rotation opposite to nasdaw side of the disk cutter.

The essence of the technical solution is to provide a continuous flow of liquid in case of hydrogenerator with intermittent (pulsed) multiple streams after exiting the nozzle. This is set concentrically arranged nasdaw with overlapping two adjacent outlets nasdaw ring neck. This chamfer on the ends of circular cutouts provide a tight clamping of the disk cutter to antifriction strip, made for example from hard and durable plastic. The anti-friction material of the pads is such that the water served as a lubricant. Therefore, it can be manufactured from cast iron.

Efficiency hydrogenerator is achieved by reducing power losses in hydroimpulsing, increasing impact the ability of multiple pulses of fluid, alternately departing from adjacent nasdaw. The increase in the number of circular cutouts allows you to increase the frequency of the pulses, that is to choose the object to be processed optimal values: high giving the program the nozzle fluid supply, number Asadchev, the number of circular cutouts.

Thus, the proposed solution has significant signs, novelty and efficiency.

Materials prejudicial to the novelty of technical solutions in the scientific and patent literature, we have not identified.

Figure 1 shows a General view on hydrogenerator, side view; figure 2 is a view along arrow a in figure 1; figure 3 is a longitudinal section of hydrogenerator; figure 4 is a view along arrow B in figure 3, is a view of the disk cutter with one annular neck; figure 5 is a view of the disk cutter with three circular cutouts; figure 6 - cross section a-a figure 5; figure 7 - location of the annular cutout relative to the adjacent two output holes nasdaw with full overlap with a width equal to the diameter of the outlet; Fig - partial overlapping of the two the outlet openings nasdaw ring neck.

Hydrogenerator includes a housing 1 with an inlet 2 from the fluid. At one end of the body is a drive shaft 3 bearing 4. At the end of the drive shaft is fixed a disk cutter 5. On the other end of the cylindrical body by bolts fixed cover 6 of the housing and cover is made with a concentrically located relative to the longitudinal axis of hydrogenerator nozzles 7. On the cover of the housing, between Crisco and disk cutter, with the possibility of replacement after abrasion, fixed anti-friction strip 8 with holes matching with bandwidth holes nasdaw.

On a disk cutter circumference coincident with the circumference of the axes of the outlet nasdaw made at least one ring-shaped cut-out 9 with chamfers 10 at the ends.

Hydrogenerator works as follows.

The working fluid is supplied into the housing 1 through the pipe 2 and extends in the form of pulse jets from the nozzles 7.

During the rotation of the drive shaft 3 ring neck 9, located on a disk cutter 5, in turn overlaps the outlet openings nasdaw. With the passage of the annular cut by hole nozzle, fluid flow is stopped, and the momentum of the fluid continues to move up to a meeting with the treated barrier.

From the effect of fluid flow on the chamfer 10 of annular cutout 9 is a constant pressing of the disk cutter to anti-friction lining 8.

The proposed hydrogenerator works with a continuous flow of working fluid passing through the inlet to the exhaust outlets nasdaw. Thus there is the possibility of increasing the pressure of the working fluid at the inlet nozzle, which increases the efficiency of hydrogenerator different devices.

1. Hydrogenerator, with whom containing a series of case inlet fluid supply and exhaust nozzles, evenly set on the cover, drive shaft and disk cutter with a circular cutout on the end of a multiple of the angular distance between adjacent outlet nozzles, the housing cover, anti-friction gasket between the disk cutter and a cover, wherein the cover is an even number of nozzles on a disk cutter is made an odd number of circular cutouts, each annular cut is made with a Central angle providing closure of the outlet openings adjacent two nozzles.

2. Hydrogenerator under item 1, characterized in that the annular cut is made with a partial overlapping of the outlet openings of two adjacent nozzles.

3. Hydrogenerator under item 1, characterized in that the disk cutter ratio between the number of annular grooves and the number of nozzles is taken nonmultiple.

4. Hydrogenerator under item 1 or 3, characterized in that when the number of notches greater than the number of nozzles, the annular grooves in the disk cutter are in the form of round holes.

5. Hydrogenerator under item 1, characterized in that the width of the annular cut is made not smaller than the diameter of the outlet nasdaw.

6. Hydrogenerator under item 1, characterized in that the ends of the circular cutouts chamfer on a disk cutter at an acute angle to square Scotti rotation of the drive shaft opposite from nasdaw side.



 

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