Valve guns for high-pressure cleaning equipment

Abstract

The invention relates to a valve gun for a high-pressure cleaning device, the valve gun has a valve (22), the valve has a valve housing (24), the valve housing has a through-channel (30), the through-channel has a first channel section ( 52), a valve seat (82) and a closing body (86) abutting against the valve seat (82) in the closed position are arranged in the first channel section, wherein the closing body (76) can pass through the valve tappet (106) moves into the open position, and the valve tappet (106) is surrounded by the sealing ring (114) and penetrates into the tappet passage (72) in the first passage section (52), and in the valve The outside of the housing (24) is mechanically coupled to the trigger lever (122). In order to improve the valve gun (10) to reduce the risk of adverse effects on the sealing effect of the sealing ring (114) and damage to the sealing ring (114), it is proposed that the valve lifter (106) is adjacent to the sealing ring (114) Surrounded by arranged wiper rings (110, 112), which abut against the valve tappet (106) and are held in contact with the valve seat (82) by a retaining element (116) in the tappet passage (72) spaced apart from the valve seat (82). The sealing ring (114) is held together.

Description

technical field [0001] The invention relates to a valve lance for a high-pressure cleaning device, the valve lance has a valve, the valve has a valve housing, the valve housing has a through channel extending from an inlet to an outlet, the through channel has a first channel section, in which Arranged in a channel section are the valve seat and the closing body which bears against the valve seat in the closed position under the action of the closing spring, wherein the closing body can be moved by pushing the valve tappet into a position spaced apart from the valve seat. In the open position, and surrounded by a sealing ring, the valve tappet extends through the tappet channel in the first channel section and is mechanically coupled outside the valve housing to the trigger lever, which is pivotable about the pivot axis. Background technique [0002] With the aid of such a valve gun, the discharge of cleaning fluid pressurized by the high-pressure cleaning device can be cont...

AI Technical Summary

Problems solved by technology

The increased roughness adversely affects the sealing effect that the sealing ring can achieve, and since the valve tappet performs a movement relative to the sealing ring, lime particles deposited on the valve tappet can damage the sealing ring

Corresponding damage to the sealing ring can also be caused by other abrasive particles carried by the cleaning fluid, such as rust particles, and the sealing effect of the sealing ring can be adversely affected

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