EP3442714A1 - Ventilpistole für ein hochdruckreinigungsgerät - Google Patents
Ventilpistole für ein hochdruckreinigungsgerätInfo
- Publication number
- EP3442714A1 EP3442714A1 EP16720736.4A EP16720736A EP3442714A1 EP 3442714 A1 EP3442714 A1 EP 3442714A1 EP 16720736 A EP16720736 A EP 16720736A EP 3442714 A1 EP3442714 A1 EP 3442714A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- valve seat
- spring
- gun according
- closing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3013—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a lift valve
- B05B1/302—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a lift valve with a ball-shaped valve member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
- B05B12/0022—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement
- B05B12/0024—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement to a single position
- B05B12/0026—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement to a single position to inhibit delivery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
- B08B3/028—Spray guns
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/01—Spray pistols, discharge devices
Definitions
- the invention relates to a valve gun for a high-pressure cleaning device for the controlled release of a cleaning liquid, comprising a valve having a valve housing with a passageway extending from an inlet to an outlet, having a first channel portion with a first diameter constriction spaced from the inlet a spring holder is arranged, wherein in the first channel portion at a distance from the first diameter constriction a valve seat member is arranged, which forms a valve seat, wherein a closing body in a closed position rests against the valve seat and can be acted upon by a closing spring supported on the closing spring with a closing force, and wherein the closing body is movable by moving a valve stem, which is mechanically coupled to a release lever, in an open position spaced from the valve seat.
- valve gun By means of such a valve gun, the discharge of cleaning liquid pressurized by a high-pressure cleaner can be controlled.
- the cleaning liquid water is usually used, to which a cleaning chemical may be mixed.
- the valve gun includes a valve having a valve housing having an inlet and an outlet and a passageway through which the inlet communicates with the outlet.
- a pressure hose can be connected to the inlet and, for example, a spray lance can be connected to the outlet.
- About the pressure hose can be supplied to the valve under pressure cleaning liquid, and the spray lance, the cleaning liquid can be directed to an object.
- the passage of the valve housing has a first channel section.
- a second channel section may be attached to the first channel section, preferably aligned at an angle to the first channel section. Close, which forms the outlet of the valve housing at its end facing away from the first channel section end.
- at least one further channel section of the valve housing adjoins the second channel section, via which the second channel section is in flow connection with the outlet of the valve housing.
- the first channel section has a first diameter constriction, which is arranged with respect to the flow direction of the cleaning liquid at a distance from the inlet and on which a spring holder is positioned.
- a valve seat element that forms a valve seat is arranged in the first passage section.
- a closing body is tightly against when the closing body assumes its closed position.
- the closing body is acted upon by a closing spring with a closing force in the direction of the valve seat.
- the closing spring is supported on the spring holder.
- the closing body By moving a valve stem of the valve, the closing body can be moved to an open position, in which it takes a distance to the valve seat and thereby releases the flow connection between the inlet and the outlet.
- the valve pistol On a release lever, which can be actuated by the user and which is mechanically coupled to the valve lifter.
- the user has the ability to pivot the release lever from a rest position to a release position.
- the valve stem Under the action of the pivoting movement of the release lever, the valve stem is displaced, so that the closing body lifts off from the valve seat and passes into its open position.
- the transition of the closing body from the closed position into the open position takes place counter to the closing force exerted by the closing spring on the closing body, and also against the force acting on the closing body pressure of the cleaning liquid.
- the pivoting movement of the release lever can be transferred directly to the valve stem by the release lever rests on the valve lifter.
- the pivoting movement of the release lever via at least one mechanical coupling element for example via a coupling lever pivotally mounted about a coupling axis, is transmitted to the valve tappet.
- valve gun is known from the document EP 1 389 495 A1, in which the valve seat element forming the valve seat is supported by a front side remote from the inlet of the valve housing on a wall of the passage channel, to which the second channel section immediately adjoins.
- the valve seat member forms a passage with an adjoining the valve seat, aligned in alignment with the first channel section input area and a substantially perpendicular to the input area adjoining output area, which adjoins the second channel section.
- care must be taken that the exit area is aligned with the second passage section. This makes the assembly of the valve difficult.
- the angled configuration of the passage of the valve seat member increases its flow resistance.
- valve gun of the type mentioned is known.
- the valve pistol has a valve with a cylindrical valve seat element, which is supported with its side facing away from the inlet of the valve housing end face at a constriction of the first channel portion.
- the valve seat member has a passage in the form of a straight through hole. This reduces the flow resistance of the valve seat member and also facilitates its assembly.
- Object of the present invention is therefore to develop a valve gun of the type mentioned in such a way that it is less expensive to produce and assemble.
- This object is achieved in a valve gun of the generic type according to the invention that the first channel portion is configured in the range from the first diameter constriction to the valve seat member as a rectilinear, cylindrical, continuously variable valve receiving area and the pen has a press-fit in the valve receiving area Einpress Scheme.
- the first channel section of the through-channel between the first diameter constriction and the valve seat element forms a rectilinear, cylindrically configured, stepless valve receiving area, into which a press-fit area of the spring holder is pressed.
- the press-fit portion of the spring holder forms an interference fit with the valve receiving portion, which ensures that the spring holder is held immovable in the valve receiving area and does not move unintentionally under the action of the force exerted by the closing spring.
- valve receiving area facilitates the insertion of the valve seat member.
- the valve seat element can slide along the cylinder wall of the valve receiving area during insertion. This facilitates the assembly of the valve.
- the manufacturing cost of the valve can be kept low by providing the interference fit between the press-fit portion of the spring holder and the valve receiving portion of the first channel portion.
- the press-in area of the spring holder dips into the valve receiving area.
- the spring holder in a preferred embodiment of the invention has a support region whose outer diameter is greater than the outer diameter of the press-in region and which is supported on the first diameter constriction.
- the first channel section at a distance from the first diameter constriction on a second diameter constriction on which the valve seat member is supported.
- the valve seat element may abut with an end face on the second diameter constriction. This facilitates the positioning of the valve seat member when inserted into the valve receiving area, since it only has to be used until it rests against the second diameter constriction.
- valve seat element has a collar which bears against the second diameter constriction with an end face and which is surrounded by a sealing ring.
- the sealing ring is located directly on the second diameter constriction.
- the sealing ring develops a sealing effect in both the axial and radial directions, i. it seals the valve seat element in the axial direction with respect to the second diameter constriction and in the radial direction with respect to the cylinder wall of the valve receiving area.
- first diameter constriction and / or the second diameter constriction are configured conically.
- the first diameter constriction and / or the second diameter constriction form a radially inwardly directed step.
- the diameter of the first channel section is in an advantageous embodiment of the invention, based on the flow direction of the cleaning liquid downstream of the valve seat member greater than the diameter of a subsequent to the valve seat passage of the valve seat member.
- the valve seat element has a passage which, in the open position of the closing body, releases a flow connection between the valve receiving area of the first passage section and a region of the first passage section arranged downstream of the valve seat element.
- the diameter of the first channel portion downstream of the valve seat member is greater than the diameter of the passage of the valve seat member.
- the passage of the valve seat member forms the smallest diameter portion of the passageway.
- This area can be made very short in the flow direction of the cleaning liquid, so that the cleaning liquid suffers only relatively small flow losses when flowing through this area.
- an end region of the passage of the valve seat element widens continuously in the flow direction of the cleaning fluid. Abrupt changes in diameter can thereby be avoided in the region between the valve seat element and the adjoining region of the first channel section.
- the end region of the passage may, for example, be conical.
- valve seat element consists of a ceramic material. This gives the valve seat member a very high mechanical strength even when using a very high pressure, heated cleaning fluid. In particular, there is no danger of the valve seat element being carried by particles carried along by the cleaning fluid and being pressed against the valve seat by the closing body when the valve is closed. pressed, is impaired.
- the valve seat element can be produced inexpensively.
- a particularly high mechanical strength is achieved in an advantageous embodiment of the invention in that the closing body is made of a ceramic material.
- the closing body is made of a ceramic material.
- Impairment of the closing body by particles that are carried by the cleaning liquid can be kept very low. This ensures that the valve gun maintains its functionality even after a long period of use. Even after a long period of use, the closing body in its closed position reliably assumes a sealing engagement with the valve seat, so that the flow connection between the inlet and the outlet is reliably interrupted when the closing body assumes its closed position.
- valve seat member and the closing body are preferably made of the same ceramic material. This results in a further reduction of the manufacturing costs, since only a single ceramic material has to be stored.
- These ceramic materials have a particularly high hardness and high impact resistance and can therefore withstand the long term loads that occur when using a highly heated and highly pressurized cleaning liquid, even if the cleaning fluid particles, such as rust or lime particles are carried , When using an alumina ceramic, however, a purity of at least 99.8% is required.
- an aluminum oxide ceramic it is also possible to use a dispersion ceramic based on aluminum oxide reinforced with zirconium oxide.
- Such dispersion ceramics are also referred to as ZTA ceramics, where the abbreviation ZTA stands for "Zirconia Toughened Aluminum Oxide.” The proportion of zirconium oxide is favorably at most 25%.
- a force transmission element is arranged between the closing body and the closing spring.
- the closing force exerted by the closing spring can be transmitted uniformly to the closing body, so that it bears tightly against the valve seat in the closed position, wherein the closing body is acted upon practically only in the longitudinal direction of the first channel section with a closing force and transverse to the longitudinal direction of the first Channel section aligned forces can be kept low.
- the power transmission element forms a guide for the closing body.
- the force transmission element preferably has a spring receiving section for receiving an end region of the closing spring facing the force transmission element and a closing body receiving section for receiving an end region of the closing body facing the force transmission element.
- the closing spring is favorably designed as a helical spring which surrounds the spring receiving section with its end region facing the force-transmitting element or dips into the spring receiving section.
- the closing body receiving portion preferably forms a recess into which the closing body dips.
- the closing body is spherical.
- the spring holder has a longitudinal channel which widens via an outwardly directed step, wherein the closing spring is supported on the step and at least upstream of the step a bypass channel branches off the longitudinal channel.
- the bypass channel allows the cleaning fluid to flow around the end portion of the closing spring arranged on the spring holder.
- the at least one bypass channel can be oblique or perpendicular to
- the at least one bypass channel is designed as a groove which is formed in the closing spring facing the end face of the spring holder.
- the closing spring can be supported on the end face of the spring holder, and via the groove formed in the end face, at least part of the cleaning liquid can flow around the outside of the closing spring on the end face.
- the closing spring facing the end surface of the spring holder has two cross-shaped grooves, which each form bypass channels.
- Figure 1 a schematic sectional view of a valve gun
- Figure 2 an enlarged view of a valve of the valve gun of FIG
- FIG. 3 shows an enlarged view of detail A from FIG. 2.
- valve gun 10 includes a gun housing 12 which is formed in a conventional manner by a first housing shell 14 and a second housing shell, not shown in the drawing.
- the gun housing 12 has a central housing portion 16 which is disposed between a front housing portion 18 and a rear housing portion 20.
- the front housing portion 18 receives a valve 22.
- the valve 22 has a valve housing 24 with an inlet 26 and an outlet 28. Via a passage 30, the inlet 26 is in fluid communication with the outlet 28.
- the outlet 28 protrudes from a front side 32 of the pistol housing 12 in the illustrated embodiment.
- a liquid discharge line such as a spray lance can be connected.
- the inlet 26 protrudes in the illustrated embodiment from a bottom 34 of the gun housing 12.
- a liquid supply line can be connected to the inlet 26.
- the pressure hose 36 has a hose nipple 38, which is introduced into the inlet 26 of the valve housing 24 and fixed to the valve housing 24 by means of a union nut 40.
- the union nut 40 is surrounded by a kink protection 42 in the illustrated embodiment.
- a handle 44 From the rear housing portion 20 of the gun housing 12 is a handle 44, from the free end portion 46 extends in the illustrated embodiment, a protective bracket 48 to the front housing portion 18.
- the guard 48, the central housing portion 16 and the handle 44 surround an engagement opening 50 into which the user can engage with his fingers.
- the valve 22 is shown enlarged in FIG.
- the passageway 30 has a rectilinear first channel section 52 which extends in the flow direction 54 of the cleaning liquid to the inlet 26 connects.
- the first channel section 52 has a first radially inwardly directed step 56, and in the flow direction 54 at a distance from the first step 56, the first channel section 52 has a second radially inwardly directed step 58. Downstream of the second stage 58, the first channel section 52 forms an end region 60.
- the end portion 60 is followed by a second channel portion 62 which is oriented at an angle to the first channel portion 52, that is, the longitudinal axis 64 of the second channel portion 62 is oriented at an angle to the longitudinal axis 66 of the first channel portion.
- the angle between the longitudinal axis 64 and the longitudinal axis 66 is more than 90 °, in particular about 115 °.
- a third channel section 68 of the through-channel 30 adjoins the second channel section 62.
- the third channel section 68 extends from the second channel section 62 to the outlet 28 of the valve housing 24.
- the longitudinal axis 70 of the third channel section 68 is oriented at an angle to the longitudinal axis 64 of the second channel section 62.
- the longitudinal axis 70 of the third channel section 68 is perpendicular to the longitudinal axis 66 of the first channel section 52.
- the valve housing 24 has a stepped plunger channel 72, which is aligned with the first channel portion 52 and connects to the end portion 60 of the first channel portion 52.
- the plunger channel 72 extends up to an upper side 74 of the valve housing 24 remote from the inlet 26. Starting from the upper side 74, the plunger channel 72 has an input section 76 to which a stepped extension 78 opens into the end region 60 of the first channel section 52 Output section 80 connects.
- the first channel section 52 Approximately centrally between the inlet 26 and the first stage 56, the first channel section 52 has a conical constriction 82, over which the Diameter of the first channel portion 52 is reduced.
- the hose nipple 38 is inserted into the region of the first channel portion between the inlet 26 and the first stage 56.
- the hose nipple 38 has an annular groove in which a sealing ring 86 is arranged, which seals the hose nipple 38 in a region downstream of the conical constriction 82 against the wall of the first channel section 52.
- the region of the first channel section 52 extending from the first step 56 to the second step 58 is rectilinear, cylindrical and infinitely variable and forms a valve receiving region 88.
- a spring holder 90 is supported by a support flange 92 on the first step 56 and is pressed into the valve receiving region 88 with a press-in region 94 adjoining the support flange 92 in the flow direction 54.
- the press-fit region 94 thus forms an interference fit together with the valve receiving region 88.
- the press-in area 94 is cylindrical.
- An insertion region 96 of the spring holder 90 adjoins the press-in region 94 in the flow direction 54.
- the outer diameter of the output region 96 is smaller than the outer diameter of the Einpress Schemes 94.
- the exit region 96 extends to a second step 58 facing end face 98 of the spring holder 90.
- end face 98 In the end face 98 are formed two mutually perpendicular grooves 100, 102, as well as a central recess 104.
- the grooves 100, 102 have a greater depth than the central recess 104th
- the spring holder 90 In the longitudinal direction, ie in the flow direction 54, the spring holder 90 is penetrated by a longitudinal channel 106, from which the grooves 100, 102 branch off in the radial direction.
- a valve seat member 108 is supported, which is designed substantially cylindrical and a valve seat 110 facing the spring holder 90 is formed. Coaxial with the longitudinal axis 66 of the first channel section 52, the valve seat element is adjoined to the valve seat 110 108 in the longitudinal cross-through passage 112, which widens conically towards the end portion 60 of the first channel portion 52.
- the valve seat member 108 forms a collar 114, which is surrounded by a sealing ring 116 and rests with an end face 118 on the second step 58.
- the collar 114 is adjoined by a radially outwardly directed shoulder 120 of the valve seat element 108.
- a closing body 122 is disposed in the valve receiving portion 88, which is designed spherical in the illustrated embodiment.
- valve seat member 108 and the closing body 122 are made of a ceramic material in the illustrated embodiment.
- the closing body 122 is made of the same ceramic material as the valve seat member 108.
- the valve seat member 108 and the closing body 122 are made of an alumina ceramic having a purity of at least 99.8% or a dispersion ceramic based on dispersed zirconia alumina.
- the closing body 122 bears against the valve seat 110.
- a closing spring 124 By means of a closing spring 124, the closing body 122 is acted upon by a closing force, so that it is pressed against the valve seat 110.
- the closing spring 124 is formed in the illustrated embodiment as a helical spring. It is supported with its end facing away from the closing body 122 on the spring holder 90, wherein it dips into its central recess 104. With its closing body 122 facing the end region surrounding the closing spring 124 a cylindrical spring receiving portion 126 of a force transmission element 128, via which the force exerted by the closing spring 124 closing force on the closing body 122 is transmitted.
- the force transmission element 128, facing the closing body 122 has a closing body receiving portion 130 in the form of a depression into which the closing body 122 with its end region facing away from the valve seat 110 dips.
- the plunger channel 72 is penetrated by a valve tappet 132 which extends up to the closing body 122 and protrudes with its free end 134 out of the upper side 74 of the valve housing 24.
- the valve tappet 132 is surrounded by a sealing ring 136 which is positioned between a support ring 138 bearing against the stepped extension 78 of the tappet channel 72 and a wiper ring 140 spaced from the support ring 138.
- the support ring 138 avoids a gap extrusion of the sealing ring 136, i. E. it ensures that the sealing ring 136 is not squeezed into the gap between the valve tappet 132 and the wall of the inlet section 76 of the tappet channel 72 under the action of very high liquid pressures.
- valve stem 132 can be moved colinearly to the longitudinal axis 66 of the first channel section 52, wherein its outer side is stripped off by the scraper ring 140 and thereby any lime deposits and other deposits of abrasive particles are eliminated.
- the wiper ring 140 and the sealing ring 136 are held in the output section 80 of the plunger channel 72.
- the valve stem 132 can be displaced by pivoting a trigger lever 144 in the direction of the inlet 26, so that the closing body 122 lifts against the closing force of the closing spring 124 from the valve seat 110 and thereby releases the flow connection between the inlet 26 and the outlet 28.
- the release lever 144 is disposed in the handle 44 and mounted about a pivot axis 146 pivotally mounted on the first housing shell 14 and the second housing shell, not shown in the drawing. He can use the palm of his hand from his rest shown in FIG. Position in the direction of the front housing portion 18 are pivoted.
- the pivot axis 146 is arranged in the free end region 46 of the handle 44. In its rest position, the triggering lever 144 protrudes with an actuating surface 148 out of the back of the handle 44 facing away from the front housing region 18.
- the release lever 144 is acted upon by a first return spring 150 with a resilient restoring force. Under the action of the first return spring 150, the release lever 144 automatically assumes its rest position when the user releases the release lever 144.
- the release lever 144 is automatically locked by means of a first locking member 152.
- the substantially L-shaped designed first locking member 152 is pivotally mounted in the handle.
- a first leg 154 of the first locking member 152 protrudes in the rest position of the trigger lever 144 from the front housing portion 18 facing front of the handle 44 out.
- a trigger arm 144 facing the second leg 156 of the first locking member 152 is in the rest position of the trigger lever 144 with its free end 158 on the trigger lever 144 and prevents it from pivoting movement.
- a second return spring 160 the first locking member 152 is pressed into its locking position shown in Figure 1.
- the first locking member 152 When the user grasps the handle 44 with his hand, he intuitively pivots the first locking member 152 counter to the spring force of the second return spring 160 into a position in which the second leg 156 can dip into a recess 162 of the release lever 144 and thereby the finger Release lever 144 from the first locking member 152 can be freely pivoted about the pivot axis 146. If the user releases the handle 44 again, the trigger lever 144 is automatically pivoted by the first return spring 150 into its rest position and the first locking member 152 is automatically pivoted by the second return spring 160 in the locking position in which it locks the release lever 144.
- a pivoting movement of the trigger lever 144 in the direction of the front housing portion 18 is transmitted to the valve tappet 132 via a coupling lever 164 arranged in the central housing portion 16.
- the coupling lever 164 is mounted in the illustrated embodiment, the valve housing 24 about a coupling axis 166 pivotally.
- the coupling axis 166 is aligned parallel to the pivot axis 146.
- the coupling lever 164 has an adjustable force-applying element 168 which bears against the free end of the valve tappet 132.
- the coupling lever 164 Spaced from each other on a first coupling roller 170 and a second coupling roller 172, the succession of pivoting of the trigger lever 144 in the direction of the front housing portion 18 successively each slide on a portion of a guide track 174 which a the coupling lever 164 facing end face 176 of the release lever 144 is formed.
- the release lever 144 is pivoted in the direction of the front housing portion 18, first the first coupling roller 170 slides along a rear end region of the guide track 174 and the coupling lever 164 is pivoted such that the force application element 168 moves the valve tappet 132 in the direction of the inlet 26 of the valve housing 24 shifts.
- the first coupling roller 170 lifts from the guide track 174 and the second coupling roller 172 slides along a front end portion of the guide track 174, so that the coupling lever 164 is further pivoted and thereby the valve tappet 132nd is further displaced in the direction of the inlet 26 until the closing body 122 reaches its open position.
- the coupling lever 164 can be locked by means of a second locking member 178.
- the second locking member 178 forms a displaceably mounted on the first housing shell 14 and on the second housing shell sliding body 180, which in its locking position shown in Figure 1 with a coupling lever 164 facing the projection 182 directly on the first coupling roller 170 facing away from the top of the coupling lever 164th is present or arranged at a small distance to the top of the coupling lever 164.
- a pivotal movement of the coupling lever 164 and thus also a pivoting movement of the release lever 144 is reliably prevented by means of the sliding body 180 when the sliding body 180 assumes its blocking position shown in FIG.
- the sliding body 180 can be moved in the direction away from the front housing portion 18 toward the rear in a parking position, not shown in the drawing, so that the projection 182 releases the coupling lever 164 and this release lever 144 via the first coupling roller 170 and the second Coupling roller 172 can be pivoted. Both in the blocking position and in the parking position of the sliding body can be locked by means of suitable locking elements with the gun housing 12.
- the valve gun 10 and in particular the valve 22 have a very high load capacity and are inexpensive to produce.
- the support ring 138 and the scraper ring 140 can be used together with the sealing ring 136 via the inlet 26 and the first channel section 52 in the output section 80 of the plunger channel 72 in a first step.
- the clamping disc 142 can be pressed via the inlet 26 and the first channel section 52 into the outlet section 80 of the plunger channel 72.
- a subsequent assembly step then made of a ceramic material valve seat member 108 together with the sealing ring 116 are inserted so far over the inlet 26 in the valve receiving portion 88 until the end face 118 of the collar 114 rests against the second step 58 of the first channel section 52.
- the closing body 122 and the closing spring 124 can be inserted together with the force transmission element 128 via the inlet 26 in the valve receiving area 88, and in a subsequent assembly step, the spring holder 90 can be pressed with its press-in area 94 so far into the valve receiving area 88, the support flange 92 bears against the first step 56 of the first channel section 52. Finally, then the valve stem 132 can be inserted from the top 74 of the valve housing 24 in the ram channel 72, wherein he passes through the support ring 138, the sealing ring 136, the wiper ring 140 and the clamping plate 142 and finally comes to rest on the closing body 122.
- the installation of the valve 22 is thus very simple and can be carried out inexpensively.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2016/058417 WO2017178072A1 (de) | 2016-04-15 | 2016-04-15 | Ventilpistole für ein hochdruckreinigungsgerät |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3442714A1 true EP3442714A1 (de) | 2019-02-20 |
Family
ID=55913580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16720736.4A Withdrawn EP3442714A1 (de) | 2016-04-15 | 2016-04-15 | Ventilpistole für ein hochdruckreinigungsgerät |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3442714A1 (de) |
CN (1) | CN109070105A (de) |
WO (1) | WO2017178072A1 (de) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB513013A (en) * | 1938-03-29 | 1939-10-02 | Basil Marven | Improvements in or relating to hand-controlled nozzles for the delivery of fluids or powdered material |
DE102011056094B4 (de) * | 2011-12-06 | 2014-05-28 | Dionex Softron Gmbh | Schaltventil, insbesondere für das Schalten eines unter hohem Druck stehenden Fluids |
EP3079833B1 (de) * | 2013-12-12 | 2018-09-26 | Alfred Kärcher SE & Co. KG | Ventilpistole für ein hochdruckreinigungsgerät |
-
2016
- 2016-04-15 CN CN201680084515.1A patent/CN109070105A/zh active Pending
- 2016-04-15 EP EP16720736.4A patent/EP3442714A1/de not_active Withdrawn
- 2016-04-15 WO PCT/EP2016/058417 patent/WO2017178072A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN109070105A (zh) | 2018-12-21 |
WO2017178072A1 (de) | 2017-10-19 |
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