DK150789B - RUBBER FOR HIGH PRESSURE CLEANERS - Google Patents

Description

150789

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a flushing tube for placement at the end of a flushing hose from a high-pressure hot and cold water cleaner and with a handle at one end with a spring-loaded pistol grip for a stop valve and a double jet pipe disposed at the other end. branches, each of which has a spray nozzle at the free end, one of which is provided with a control valve such as a needle or ball valve or other infinitely controllable valve for regulating the water pressure when adjusting the valve, the double jet tube having a side handle for handling and control of the washer.

In the case of flushing pipes of this type, the water pressure in hose 2 150789 or less is regulated for the control valve on one branch of the double jet pipe. In this way the water pressure can be varied infinitely. at the start of a cleaning operation, first spray water containing a cleaning agent under a relatively low pressure and then rinse with clean water under high pressure. This can save a considerable amount of detergent, as well as reducing the pressure of spraying in vulnerable places.

Since the recoil force in the flush pipe at the high pressure can be very high, it is necessary that such flush pipe be provided with both an insulating side handle and the rear handle with a built-in spring-loaded pistol grip (dead man grip) in order to safely control the jet under all conditions. When the operator of the known flushing pipes had to change the water pressure by turning the control valve, he necessarily had to release one of the flushing handles to get a hand free to adjust the valve, which, in addition to delaying, can cause a slightly risky interruption in the work.

For spray guns, e.g. for spraying paint, or for guns for gas welding where the pressure in the flowing medium is so small that the gun can be easily held by one hand, it is known to place the control valve on the flushing tube so that it can be adjusted either with the same hand or with the other, free hand, but because of the low recoil force, it is no problem to control the jet during the valve setting. The valves used for valve control are, therefore, generally known on the known apparatus as small wing screws or handles which are resilient to spring force. On the other hand, when using flushing pipes with the high pressure in question, it is imperative that the pipe is always held with both hands by two solid handles, which results in the precarious conditions mentioned above when the control valve has to be adjusted.

The object of the invention is to provide a flushing pipe of the kind in question which can be operated more safely and easily than the known flushing pipes during operation, especially since the stepless control can be made without interruption of the work and while securely holding the flushing pipe.

The flushing tube according to the invention is characterized in that the side handle is designed as a generally cylindrical control lever disposed perpendicular to the flushing tube, which is removably mounted on the valve stem projecting from the control valve. In this way, any regulation of the water pressure, even at very high pressures, can be made steplessly and with great certainty by the operator while he is working, so that he can constantly adjust the jet pressure according to the circumstances. Preferably, the branch of the jet pipe provided with the control valve has a nozzle with a relatively large opening, and upon opening the control valve, the water pressure can e.g. brought down to approx. 10 bar at the beginning of a cleaning operation where you want to add cleaning fluid. An injector located on the high-pressure cleaner may be connected to the coil hose and be arranged so that it only sucks in the water when the pressure in the hose is reduced to approx. 10 bar. When the operator, who still has both hands on the flushing tube, when turning the regulating lever reduces the pressure, the cleaning fluid is sucked into the water, and when he later wants to flush to remove the cleaning fluid and dirt, he simply has to turn the regulating lever so that the pressure rises. The injector then stops sucking in the additive and rinsing takes place with clean water.

In the drawing, an embodiment of the flushing pipe according to the invention is shown.

At one end of the flush tube is a handle 1 with a built-in spring actuated pistol grip, which acts as a dead man's stop, with a stop valve interrupting the flow of water through the tube when the pistol grip is released. The other end of the flushing pipe is formed as a double jet pipe consisting of two manifolds 2 and 3, respectively, each having at their free end a nozzle 4 and 5. The manifold 2 forms an open connection between the stop valve in the handle 1 and the atmosphere, while the manifold 3 is provided with a control valve 6 so that the passage through this tube can be varied infinitely by turning a handle 7 located on the control valve, which, together with the handle 1, serves as a handle for controlling the ejected beam.

When the high-pressure cleaner is operating, fluid will be injected through the manifold 2 and the nozzle 4 in all conditions when the valve in the handle 1 is open. Upon complete shut-off of the manifold 3 with the control valve 6, the water pressure - depending on, among other things, the size of the hole in the nozzle 4 - will be very large, e.g. of the order of 150 bar, which produces a considerable recoil force which makes it necessary

Claims (2)

150789 poem that the operator holds firmly to the washer with both hands. When the control valve 6 is opened, a greater or lesser amount of water flows out through the manifold 3 and the nozzle 5, thereby reducing the pressure. In the prior art flushing pipes, in order to operate a valve on the manifold 3, the stop valve had to be cut off by releasing handle 1 if one would not risk accidents such as the failure of one-hand control. By means of the control handle 7, which is secured to a regulating spindle projecting from the valve body, the water pressure can be controlled infinitely at any time. Eg. For example, an injector on the high pressure cleaner may be arranged so that when the pressure of the habit is reduced to approx. 10 bar, can suck additives into the water and so that the suction ceases when the water pressure regulates; up. The injector thus acts as an on / off cleaning fluid dosing mechanism, which is also operated from the handle 7. In addition to working with cleaning liquid, the rinsing tube can also be used in connection with water / sand blowing systems. Claims. 1. Flushing tubes for placement at the end of a flushing hose from a high-pressure hot and cold water purifier and having a handle at one end with a built-in, spring-loaded pistol grip (1) for a stop valve and a double jet pipe disposed at the other end manifold (2,3), each having at its free end a spray nozzle (4,5), one of which (3) is provided with a control valve (6) such as a needle or ball valve for infinitely regulating the water pressure at adjusting the valve in which a side handle (7) is arranged on the jet tube (3) for handling and controlling the flushing tube, characterized in that the side handle (7) is designed as a generally cylindrical control handle (7) perpendicular to the jet tube (3). ) which is removably mounted on the valve stem projecting from the control valve (6). A coil tube according to claim 1, characterized in that the nozzle at the end of the manifold on which the control valve is arranged has a nozzle opening larger than the opening in the nozzle located on the second manifold.