Fluid sprinkling – spraying – and diffusing – Including supply holder for material – To be mixed – dissolved or entrained in a flowing liquid...
Reexamination Certificate
2000-01-18
2001-01-30
Kashnikow, Andres (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Including supply holder for material
To be mixed, dissolved or entrained in a flowing liquid...
C239S063000, C239S311000, C239S318000, C239S570000, C137S505350, C137S895000
Reexamination Certificate
active
06179226
ABSTRACT:
BACKGROUND OF THE INVENTION
a) Technical Field of the Invention
The present invention relates to a high pressure cleaning device with suds cleaning efficacy, and in particular, a cleaning device having a body provided with a bending water passage and with a pressure balancing design so as to stabilize the pressure at the interior of the body.
b) Description of the Prior Art
FIGS. 5 and 6
show a conventional cleaning device with a control body comprising two connection pipes
31
in combination with a Venturi tube seat
32
forming into a control body
30
. One end of the body
30
is an inlet for water stream, and the other end is a water outlet connection for the output of cleaning water stream after mixing. The entire mixing of detergent is that the increasing pressure of the Venturi tube seat
32
to suck out the detergent together with the water stream from the pump, after that, via the storage tank
33
to reduce the speed of flow so that sufficient mixing with water is achieved. The mixed fluid passes to the pipe connector
34
, connected to high pressurized air, located at one side of the storage tank
33
so as to produce suds for cleaning requirements. There is no control device to assist the opening and closing of the cleaning operation, and for a safety precaution, a low pressure pump of below 40 kg/cm is used. However, if the water outlet is closed or interrupted, water recycling will cause a pressure increase at the interior of the body
30
. Thus, there are problems such as the safety of the output pipe, and the water will reverse flow to the detergent or the air pipe, which causes the detergent to deform or to block the air pipe. As a result, in operation, the pump can only be used at a low pressure and the procedures of pump operation have to be in standard sequences. That is, the output of the pump has to be closed first, then the opening at the end of the cleaning pipe is closed. This causes a waste of water stream, detergent and the high pressurized air so as to maintain the safe utilization of pipes.
Thus, it is a main object of the present invention to mitigate the drawbacks of the conventional design.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a high pressure cleaning device, wherein the middle section of the control body of the device is provided with a plug shaft to adjust pressure such that when the recycle pressure is too high, the water inlet pipe is simultaneously closed to prevent the excessive pressure, which is unsafe in operation.
Yet another object of the present invention to provide a high pressure cleaning device, wherein the cleaning operation is convenient and safe.
One aspect of the present invention is to provide a high pressure cleaning device having suds cleaning efficacy comprising a control body, containing a Venturi tube seat at the interior thereof, connected to the output of a pump, one side of the body being an inlet for the feeding of detergent and the other side being connected to a high pressurized air output pipe such that the water stream and the detergent are mixed and formed into suds flowing out from an water outlet of the body to the outside for cleaning purpose, characterized in that a bending opening is provided to the middle section of the of the body connected to the inlet and outlet water passage, and the opening edge of the bending opening, corresponding to the lateral side of the body, a pressure-adjusting device is provided and a plug shaft is inserted at the bending opening and in combination with the conic shape end of the shaft body and a press board mounted at the bottom end of the plug shaft to resist the pressure change of the pressure within the interior of the body, such that the press board is slidably moved within the air chamber of the body, the board moved to one lateral side will simultaneously pull the plug shaft to close the opening edge of the bending opening, thereby the water inlet or outlet is automatically closed at an appropriate time so as to ensure the stability of pressure within the body.
Other objects, features and advantages of the invention will be apparent from the following description when read with reference to the accompanying drawings.
REFERENCES:
patent: 129015 (1872-07-01), Fay et al.
patent: 414975 (1889-11-01), Foster
patent: 3561680 (1971-02-01), Ott
patent: 3853784 (1974-12-01), Rogers
patent: 5626291 (1997-05-01), Flinn et al.
A & J
Evans Robin O.
Kashnikow Andres
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