JPH0433960Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a liquid spraying device, and particularly to a spraying device suitable for atomizing and spraying liquids such as high-viscosity paints and anti-rust waxes.

(Prior Art) As this type of device, the device shown in Utility Model Application Laid-Open No. 59-97760 is known. In this technology, a part of the spray device called a gun body consisting of an atomizing part, a valve part, and a handle part is arranged in parallel, and the liquid passages are connected by pipes.

(Problem to be solved by the invention) In the conventional device described above, the gun body has three parts connected in parallel, so even if the shape and arrangement of each part are devised, the width of the entire device is limited. Alternatively, the thickness may be so large that it may be difficult to carry it into a narrow space within the work. Furthermore, since each part must be connected by a pipe, the number of parts is large, resulting in high cost, and the liquid passage becomes long, making it difficult to obtain rapid response.

(Means for solving the problem) The present invention solves the above problem by directly connecting the atomization chamber and the valve chamber. In a liquid atomizing device comprising an atomizing chamber equipped with a pipe and a valve chamber having a valve for opening and closing a liquid passage, the liquid outlet of the valve chamber is connected to the liquid passage of the atomizing chamber. The gun body is constructed by providing an inlet at the end surface of the bench lily tube opposite to the outflow side, attaching a valve chamber to the end surface, and aligning the liquid outlet of the valve chamber with the inlet of the liquid passage of the atomization chamber. do.

(Operation) By the above means, the atomization chamber and the valve chamber are connected in one row to form an elongated gun body, making it possible to apply liquid to a narrow area. Moreover, this connection forms a liquid passage without using a conduit.

(Example) Examples of the present invention will be described below with reference to the drawings.
In the figure, 1 is a gun body of a spray device, and this gun body 1 is made up of a block-shaped atomization chamber 2 and a valve chamber 3, and a nozzle pipe 4 having a nozzle 4a is connected to the atomization chamber 2 to form a spray device. Configure.

The atomization chamber 2 has a recess 5 formed from one end thereof, into which a bench lily tube 6 is screwed with a threaded portion 7. The vent lily tube 6 has a ventilation passage 8 at the center, and the ventilation passage 8 is composed of an intermediate constricted part 8a, a tapered diameter part 8b and an enlarged diameter part 8c before and after the constricted part 8a. Aperture part 8a
A circumferential groove 9 is provided on the outside of the
Four injection ports 10 are provided that communicate perpendicularly to a. Ring grooves 11 are provided on both sides of the circumferential groove 9,
An O-ring 12 is fitted here to maintain airtightness with the inner surface of the recess 5.

A connection port 13a and a passage 13 are provided in communication with the bottom of the recess 5 for introducing atomizing air, and a liquid passage 14 is provided in communication with the peripheral groove 9.
The inlet of this liquid passage 14 opens to an end face 15 of the atomizing chamber 2 opposite to the venturi tube 6 side, and a countersink 1
The venturi 6 is connected to the nozzle 10 and has a packing 17 inserted therein. A thread 18 is formed at the downstream end of the venturi 6 for screwing the spray nozzle 4 thereto.

The valve chamber 3 has a valve chamber 2 extending through it in the longitudinal direction.
0, a communication chamber 21 and a piston chamber 22 are provided continuously in a line, and a valve seat 25, a packing 26, and a sleeve 27 are fitted into the valve chamber 20, and the valve seat 25
An umbrella-shaped valve 28 is inserted which can be seated. A spring 29 and a piston 30 are inserted into the piston chamber 22, the piston 30 is screwed into a valve 28, and the opening of the piston chamber 22 is closed by a lid 31. The valve chamber 3 is also provided with a liquid passage 32 that connects to the communication passage 21 and a pilot air passage 33 that communicates with the piston chamber behind the piston 30, and a connection port 32a for connecting a conduit to these passages. 33a is open on one side.

A plurality of mounting holes 34 are provided through the valve chamber 3, a screw hole 35 is provided in the atomization chamber, and a bolt 36 is inserted and screwed into the atomization chamber, whereby both chambers 2 and 3 are integrally connected, and the fluid passage 14 the inlet of the valve chamber 20 and the outlet 2 of the valve chamber 20
0a meet, the end surface of the sleeve 27 contacts the packing 17, and an airtight liquid passage is formed. The air passages 13 and 33 are each connected to a pressurized air source via an air valve (not shown), and the liquid passage 32 communicates with a pressurized liquid tank. A fixing hole 37 for the handle or support member is provided at an appropriate position.

When starting painting work, first open air passage 1.
3. Supply atomized air through the air passage 8 of the bench lily tube 6, and then push the piston 30, which supplied pilot air through the air passage 33, to the left in the figure to remove the valve 28 from the valve seat 26; Pressurized liquid to outlet 2
0a, the liquid passes through the liquid passage 14, and the circumferential groove 9, and then flows into the constriction part 8 from the injection port 10. When stopping the painting operation, the pilot air passage is first shut off and the valve 28 is closed, and then the atomizing air is shut off.

As described above, the liquid supplied to the bench lily pipe 6 is attracted by the high-speed airflow passing through the constriction part 8a, is crushed, mixed, and atomized, and flows out into the nozzle pipe 4 and flows into the nozzle 4a.
released from. At this time, there are no passages using pipes in the gun body 1, and there are only passages bored in the atomization chamber 2 and valve chamber 3, so they can be formed to the shortest length, so there is no delay in operation and responsiveness is achieved. A spray device with good performance can be obtained, and since there is no piping structure, the structure is simple and the number of parts is small. And atomization chamber 2 and valve chamber 3
are arranged in series on a line, so the width or thickness is small;
Easy to use in narrow spaces.

(Effects of the invention) As described above, the gun main body of the present invention can be constructed compactly, making it easy to carry and handle the gun into a narrow painting area for painting paint, wax, etc. In addition, since the flow path from the valve chamber to the atomization chamber is connected without using pipes, a device with short flow path length and good responsiveness can be obtained, and there is no need for piping work, reducing the number of parts and making manufacturing easier. It's easy.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, and FIG. 2 is a side view of the outer shell of the atomization chamber. 1...Gun body, 2...Atomization chamber, 3...Valve chamber,
6... Bench lily tube, 14... Liquid passage, 15...
... end face, 20 ... valve chamber, 28 ... valve.

Claims (1)

[Scope of utility model registration request] A liquid atomization chamber equipped with a bench lily tube that mixes and atomizes liquid and air flow, and a valve chamber with a valve that opens and closes a liquid passage, the liquid outlet of the valve chamber being connected to the liquid passage of the atomization chamber. In the atomizing device, the inlet of the liquid passage of the atomization chamber is provided at the end surface of the bench lily tube opposite to the outflow side, and the valve chamber is attached to the end surface, so that the liquid outlet of the valve chamber is aligned with the inlet of the liquid passage of the atomization chamber. A liquid spraying device characterized in that a gun body is configured by