RU2002516C1 - Manual sprayer of fluid - Google Patents

Abstract

Usage: hand-held spraying devices designed to produce fine aerosol particles of various liquids under domestic conditions while ensuring the most complete use of the sprayed liquid. SUMMARY OF THE INVENTION A siphon tube is rigidly secured with a second end in a plug. The base of the cylinder is provided with a protrusion forming a valve for engaging with a hole in the plug communicating with the atmosphere of the container. 2 eeyore

Description

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 FIELD OF THE INVENTION This invention relates to hand-held spraying devices for the preparation of fine aerosol particles of various liquids for domestic use.

A atomizer is known comprising a housing with a piston pump disposed therein, driven by a hand force, the cylinder of which is at the same time a valve connecting the container underneath the atomizer to the atmosphere.

To ensure the operation of this valve, the cylinder is located vertically and is a movable element of the pump, and the piston, respectively, is stationary, rigidly fixed in the housing. The liquid enters from the container located under the spray gun into the pump through an opening with a ball valve, made in the lower part of the cylinder.

A disadvantage of this atomizer is the rigid connection of the siphon tube to the movable cylinder of the reciprocating pump, which is necessary for supplying fluid to the pump. During operation of this atomizer, the cylinder makes a reciprocating movement, as a result of which the lower end of the siphon tube moves in a similar manner in a liquid in a container. When the fluid in the tank is low, the lower end of the siphon tube, moving upward, rises above it, and the flow of fluid into the pump stops.

In view of this, the design of said sprayer does not ensure full utilization of the liquid in the container below the sprayer.

The purpose of the invention is the provision of the most complete use of the sprayed liquid,

This is achieved by the fact that in a hand-held liquid sprayer containing a container for .. sprayed liquid, a housing is installed on it by means of a threaded cap with a L-shaped nozzle placed on it, at one end of which there is a plug with a ball valve, with a siphon tube, the free end which holds the tank, and a cover fixed to the second end of the nozzle with a valve forming a centrifugal nozzle, and a piston pump, the movable cylinder of which is kinematically connected to the lever and spring-loaded, according to the invention - fonna tube rigidly fixed in the second end of the tube, wherein the base of the cylinder formed with a projection forming a valve for cooperating with vypolnennymv tube opening

communicating the cavity of the container with the atmosphere,

Figure 1 shows a section of a liquid atomizer; Figure 2 is the same during spraying.

The sprayer includes a housing 1, which is fastened by means of a threaded cap 2 to the container 3 for sprayed liquid. A L-shaped pipe 4 is placed in the housing, at one end of which there is a plug 5 with a ball valve 6 and with a siphon tube 7, which is rigidly connected to the plug. The second free end of the tube is placed in a container 3. At the second end of the pipe 4, a cap 8 and a valve 9 are fixed, forming a centrifugal nozzle of the atomizer.

The sprayer also contains a piston pump, the movable cylinder 10 of which is connected to a lever 11 pivotally mounted in the housing 1 on the axis 12. The cylinder is spring loaded 13 and is made with a protrusion 14 in the base to interact with the hole 15 made in the plug 5 for communicating the cavity of the tank 3 with the atmosphere.

In the plug 5 there is also a rope 16 closed by a valve 6.

The nozzle nozzle valve 9 is made of a polymeric material in the form of a single-acting piston with a thin elastic sealing element that forms a cavity 17 which is hermetically separated from the nozzle 4, inside of which the nozzle is located.

The piston pump piston 18 of single acting is also made of a polymeric material with an elastic sealing element and a channel 19 located inside it. A hole 20 is made in the pipe 4, which connects it through the channel 19 to the cavity of the movable cylinder 10.

The sprayer works as follows ..,

Acting with a force P on the lever 11, the latter rotates about an axis 12, the spring 13 is compressed and the cylinder 10 moves vertically upward. In this case, the volume between the cylinder 10 and the piston 18 is reduced, and the liquid contained in it is expelled under pressure through the channel 19 and the hole 20 in the nozzle 4. The protrusion 14, forming a valve, opens the hole 15 in the tube and communicates the cavity of the tank 3 with the atmosphere.

The fluid pressure in the pipe 4 acts on the valves 6 and 9. The valve 6 closes the channel 16 and prevents the flow of fluid from the pipe 4.

The elastic sealing element of the valve 9 is unbent and connects the cavity 17 to the nozzle 4. Liquid under pressure enters from the nozzle 4 to the cavity 17, and from there to the centrifugal nozzle through which the atomization takes place (Fig. 2).

At the end of the stroke, the cylinder 10 abuts against the nozzle 4 with its upper end, the lever 11 stops and the displacement of the liquid from the cylinder stops.

The pressure in the pipe 4 drops, and the valve 9 closes the cavity 17, disconnecting it from the pipe 4 and stopping, thereby, spraying the liquid.

After the force P is released, the spring 13 begins to expand, moving down the cylinder 10, which, acting on the lever 11, rotates it about the axis 12. The volume between the piston 18 and the cylinder 10 increases, and & It creates a rarefaction, and valve 9 prevents air from entering the atmosphere in the pipe 4 and cylinder 10.

Due to the discharge, the liquid from the tank 3 under the influence of atmospheric pressure molded through a siphon tube 7 enters

channel 16, opens the valve 6 and enters the pipe 4,

As cylinder 10 moves, fluid from nozzle 4 through opening 20 and channel 19 fills it.

At the end of the return stroke of the cylinder 10, the spring 10 expands to its original position, while the protrusion 15 of the base of the cylinder 10 closes the plug hole 15 and disconnects the container 5 from the atmosphere, and the lever 11 returns to its original position. After that, the sprayer is ready for a new duty cycle.

The vertical arrangement of the pump cylinder allows you to create a compact design of the spray gun, which can be mounted on a container with a neck of small diameter, while ensuring that the tank is connected to the atmosphere by means of a valve, and the fixed mounting of the siphon tube in the spray housing ensures the most complete use of fluid, thereby improving the quality sprayer work.

(56) EP N: 0364616, cells B 05 8 11/00. 1988.

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Claims (1)

The claims MANUAL LIQUID SPRAYER containing a container for the liquid to be sawed, mounted on it by means of a threaded cover, a housing with a G-shaped pipe placed on it, at 35 one end of which there is a tube with a ball valve, with a siphon tube, the free end of which is placed in a container fixed to the second end of the nozzle cover with valves, a centrifugal nozzle, and a non-pump, the movable cylinder of which is kinematically connected with a lever and spring loaded, characterized in that, in order to ensure the most complete use of the liquid to be sawed, the siphon tube is rigidly secured with the second end in the housing, while the cylinder base is made with a protrusion forming a valve for interacting with a hole in the plug communicating the cavity of the container with the atmosphere. J 9192002 f Nl