EP2558755A1 - Ensemble de vannes - Google Patents

Ensemble de vannes

Info

Publication number
EP2558755A1
EP2558755A1 EP11714692A EP11714692A EP2558755A1 EP 2558755 A1 EP2558755 A1 EP 2558755A1 EP 11714692 A EP11714692 A EP 11714692A EP 11714692 A EP11714692 A EP 11714692A EP 2558755 A1 EP2558755 A1 EP 2558755A1
Authority
EP
European Patent Office
Prior art keywords
valve
valve arrangement
arrangement according
cartridge
circular cylindrical
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Withdrawn
Application number
EP11714692A
Other languages
German (de)
English (en)
Inventor
Christian Spielvogel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2558755A1 publication Critical patent/EP2558755A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0832—Modular valves
    • F15B13/0835—Cartridge type valves
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1225—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston with a plurality of pistons
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
    • 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
    • F16K43/00—Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/165—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type
    • Y10T137/2557—Waste responsive to flow stoppage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/598—With repair, tapping, assembly, or disassembly means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7504—Removable valve head and seat unit
    • Y10T137/7559—Pump type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7504—Removable valve head and seat unit
    • Y10T137/7668—Retained by bonnet or closure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • Y10T137/87893—With fluid actuator

Definitions

  • the invention relates to a valve arrangement according to the preamble of patent claim 1.
  • cartridge-type housings are known that can be inserted into an opening of a hydraulic device.
  • GB 2 367 095 A likewise shows a pressure regulating valve and DE 296 20 927 IM a cartridge-type non-return valve.
  • a disadvantage of such valves is that only one valve is received in a cartridge.
  • DE 101 36 416 A1 shows such a combination of pressure control and flow control valve.
  • a housing of the two valves is formed in a flange with one-sided connections. Since the housing must be fixed to an outer surface of an associated hydraulic device, the space required is correspondingly large.
  • the invention is based on the object to provide a valve arrangement with at least two valves whose space is minimized.
  • valve assembly having the features of patent claim 1.
  • the valve assembly according to the invention has a combination of at least two valves, wherein a common housing of the two valves is designed as an installation cartridge. With this compact arrangement, the space requirement of the valves is minimized.
  • each valve has a control piston movable in a valve bore.
  • the compact cartridge is used partially or completely in a hydraulic device.
  • the device may e.g. be a variable pump.
  • the cartridge is screwed about its central axis in the hydraulic device.
  • valve longitudinal axes of the valve bores run parallel to the central axis.
  • valve arrangement according to the invention has connections which are connected with different or all valve bores, so that the connections of different or all control pistons can be controlled.
  • manufacturing cost of the valve assembly can be further reduced, and their cartridge can be further reduced.
  • valve bores may be advantageous if the valve bores have different diameters.
  • the valve arrangement according to the invention is a pressure-flow regulator for a variable displacement pump.
  • further connections are provided on the outer circumference of the installation cartridge or on the front side next to a connection for a load-signaling line.
  • a device for transmitting torque is preferred, which within an end face of the cartridge is arranged.
  • the diameter of the cartridge and in particular that of a receptacle for the cartridge to the hydraulic device are minimized.
  • At least one circular-cylindrical section which is at a distance from the central axis, is preferred, on which or within the circumference of which a contact surface for a tool is formed.
  • the cartridge is designed as an eccentric hole screw.
  • an adjusting screw is screwed into an associated valve bore and serves to set a parameter (eg spring tension) of the corresponding valve.
  • a parameter eg spring tension
  • six circular-cylindrical sections are provided in each case between its edges on a hexagon socket of the screw.
  • six attack surfaces for the tool for screwing the cartridge are integrated in the hexagon socket, whereby a double function is given to the screw.
  • a special key is proposed as a tool, which has at least one projection with a circular-cylindrical section. This can be brought into contact with at least one associated circular cylindrical portion of the cartridge or inserted into the hole.
  • the projection of the tool is brought into contact with six circular-cylindrical sections.
  • valve holes and / or the eccentric holes may be formed as blind holes.
  • the mounting cartridge can have a two-flat with two flat sections for screwing in alternatively or in addition to the circular cylindrical sections.
  • Figure 1 shows a first embodiment of a valve assembly according to the invention in a perspective view
  • Figure 2 shows a special key to the first embodiment of the valve assembly according to the invention in a perspective view
  • Figure 3 shows the first embodiment of the valve assembly according to the invention in a sectional view
  • FIG. 4 shows a second embodiment of a valve arrangement according to the invention in a perspective view
  • Figure 5 shows a detail of the second embodiment of the valve assembly according to the invention in a sectional view
  • FIG. 6 shows a hydraulic circuit diagram of a third exemplary embodiment of a valve arrangement according to the invention with a variable displacement pump
  • Figure 7 shows the third embodiment of the valve assembly according to the invention in a perspective view
  • Figure 8 shows a first variant of the third embodiment in a sectional view
  • FIG. 10 shows the second variant of the third exemplary embodiment according to FIG. 9 in a view
  • FIG 1 shows a first embodiment of a valve assembly according to the invention in a perspective view.
  • a housing of the valve assembly is designed as a cartridge 1, which can be screwed into an adjustable pump not shown in detail.
  • the built-in cartridge 1 is rotated about its central axis 6.
  • On an outer periphery of the cartridge 1 different connectors are arranged, which are explained with reference to Figure 3. These connections are in pressure fluid connections with two different valves, which are arranged together in the cartridge 1.
  • Each valve has a valve bore 20, 22, which are shown in Figure 3, and of which in Figure 1, the end-side arranged end portions can be seen.
  • the front side corresponding holes 2, 4 are formed, which are spaced from each other to the central axis 6 of the cartridge 1 are arranged diametrically opposite each other.
  • additional circular small diameter circular recesses or holes 8, 10 are arranged on the front side of the cartridge 1, which are diametrically opposite to the central axis 6 and offset from the holes 2, 4 by 90 degrees.
  • the distance of the axis of the respective hole 8, 10 from the central axis 6 is greater than the distance of the respective hole 2, 4th
  • FIG 2 shows a tool or a special key 12, which has two projections 14, 6 and a handle 8.
  • Each projection 14, 16 has a circular cylindrical outer surface and a diameter which is slightly smaller than the diameter of the two holes 2, 4 of the cartridge (see Figure 1).
  • the two projections 14, 16 in this case have a distance from each other, that of the two holes 2, 4 corresponds.
  • the two projections 14, 16 can be inserted into the holes 2, 4 of the cartridge 1, and then the cartridge 1 can be screwed via the handle 8 in the (not shown) variable.
  • the two holes 8 and 10 may be used to screw in the cartridge 1, e.g. if damage to the holes 2, 4 is to be feared.
  • the special key must then also be modified relative to that shown in FIG.
  • the outer diameter of the mounting cartridge 1 is minimal since no torque transmitting device (e.g., an external hexagon) has to be mounted on its outer periphery.
  • the mounting cartridge 1 of the first embodiment is screwed into the variable displacement pump, that the end face of the cartridge 1 is approximately on a plane with the corresponding surface of the variable.
  • the required space of the valve assembly according to the invention is minimal.
  • FIG. 3 shows the first embodiment of the valve assembly according to the invention in a sectional view.
  • a control piston 24, 26 is slidably received in each valve bore 20, 22 in a comparable manner. They control the pressure fluid connections of three ports 28, 30, 32, which are arranged on the circumference of the cartridge 1 and are arranged along their longitudinal axis 6 spaced from each other.
  • control piston 24, 26 on the one hand by the pressure of the terminal 32 and on the other hand acted upon by the force of a respective spring 34, 36.
  • the bias of the springs 34, 36 is adjustable via a respective adjusting screw 38, 40, which is screwed into a region of the respective valve bore 20, 22, which is adjacent to the respective end portion or hole 2, 4 is arranged.
  • the spring chamber on the control piston 26 is open via a bore 35 to the outside. About this bore 35, the spring chamber and thus the control piston 26 of a control pressure, for. From the highest load pressure of all at the same time from a pump where the valve is located, supplied to powered hydraulic consumers.
  • the spring chamber with the spring 34 is connected via a groove or flattening 37 on the control piston 24 to the terminal 28.
  • FIG. 4 shows a second exemplary embodiment of a valve arrangement according to the invention in a perspective view.
  • An essential difference of Einschraubpatrone 101 against Einschraubpatrone 1 of the first embodiment is that its length is slightly shortened.
  • special recesses are provided on two setscrews 138, 140.
  • Each recess has, on the one hand, a conventional internal hexagon, which serves to adjust the respective adjusting screw 138, 140, and, on the other hand, six integrated circular cylindrical sections 102, 104. These are each arranged such that together they form sections of a circular cylinder.
  • In each of these circular cylinder can be a projection of a tool (not shown) used, which is similar to the tool 12 of Figure 2.
  • the valve assembly or the cartridge 101 according to Figure 4 in the manner in the manner (not shown) screw in or unscrew from the variable displacement, which was explained with reference to the first embodiment.
  • Figure 5 shows a detail of the second embodiment of the valve assembly according to the invention in a sectional view.
  • the (only partially) illustrated springs 34, 36 and the (in Figure 5) right adjoining part of the valve assembly correspond to those of the first embodiment shown in FIG. 3
  • FIG. 6 shows a hydraulic circuit diagram of a third exemplary embodiment of a valve arrangement 203 according to the invention with a variable displacement pump 205.
  • the circuit diagram of the valve arrangement 203 applies to the second variant shown in FIGS. 9 and 10 and largely to the first variants of the third shown in FIGS. 7 and 8 embodiment.
  • a swivel angle of the variable displacement pump 205 can be reduced or reduced via a control cylinder 207. This is done via an increase in pressure at the control pressure port A of the variable displacement pump 205 and the valve assembly 203.
  • the pivot angle of the variable displacement 205 can be increased via a further actuating cylinder 209.
  • a spring 21 1 of the actuating cylinder 209 and a pressure increase at the control pressure port P of the adjusting Pump 205 and the valve assembly 203 in the direction of increasing the pivot angle.
  • the pressure or the flow rate at a working line 213 is regulated via the swivel angle set in this way.
  • valve arrangement 203 and the variable displacement pump 205 have a common tank connection T.
  • valve arrangement 203 has a load reporting connection LS, via which the highest working pressure is reported by a plurality of consumers supplied by the variable displacement pump 205 via the working line 213.
  • the valve assembly 203 has a pressure control valve 217 and a flow control valve 219. Both valves 217, 219 are designed as proportionally adjustable 3/2-way valves and have an adjustable spring 234, 236 in the direction of the basic position of a respective control piston shown in FIG Valves 217, 219 acts. In these two basic positions of the actuating cylinder 207 is relieved via the control pressure port A, via the two valves 217, 219 and a tank line 221 to the tank T, so that the pivot angle of the variable displacement 205 is set to maximum. Also in the direction of the illustrated basic position of the flow control valve 219 acts on the load-signaling connection LS applied prescribed control pressure.
  • valves 217, 219 On the control piston of the valves 217, 219 continues to act on the port P and the control pressure line 215, the pump pressure in the working line 213.
  • the valves 217, 219 set such that increasingly pump pressure on the control pressure port P and the Control pressure line 215 connected to the control pressure port A and thus the variable displacement pump 205 is pivoted back.
  • FIG. 7 shows both variants of the third embodiment of the valve assembly 203 according to the invention (see Figure 6) in a perspective view.
  • the valve assembly 203 has a cartridge 201 to which the three pressure ports P, A and T are arranged.
  • the control pressure port P is provided on the front side for the pump pressure, wherein each valve 217, 219 (see FIG. Furthermore, at the periphery of the control pressure port A for adjusting the
  • Pivoting angle of the variable displacement pump 205 and the tank port T arranged. Adjacent to the control pressure port P is provided in the cartridge 201 a continuous transverse bore 223, which is explained with reference to Figure 8.
  • FIG. 8 shows the third exemplary embodiment of the valve arrangement according to the invention according to FIGS. 6 and 7 in a first variant.
  • a control piston 224 of the flow control valve 219 and a control piston 226 of the pressure control valve 217 are shown.
  • the control pistons 224, 226 are biased on the one hand via a substantially flat spring plate 227, 229 of the springs 234, 236 (in Figure 8) to the left and on the other hand via the voltage applied to the control pressure port P control pressure (in Figure 8) to the right in their switching positions proportional displaceable.
  • the movement of the control pistons 224, 226 (in FIG. 8) is delimited to the left by a stop pin 231, which is pressed into the continuous transverse bore 223.
  • the conical sleeves 245, 247 frustoconical inner recesses into which corresponding truncated cones 249, 251 are pressed.
  • the pressing was done during assembly of the cartridge 201 by moving or pulling the truncated cones 249, 251 in the associated tapered sleeves 245, 247 (in Figure 8) to the right.
  • a spring chamber of the flow control valve 219 is connected via a transverse bore to the load-signaling connection LS, while a spring chamber of the pressure control valve 217 is connected to the tank connection T via a pressure medium connection formed between the control piston 226 and the valve bore 222 and via a transverse bore section.
  • variable displacement pump 205 is pivoted back, so that the pressure and / or the flow rate in the working line 213 are reduced.
  • Figure 9 shows a second variant of the third embodiment of a valve assembly according to the invention in a sectional view. In the following, only the differences of this second variant to the first variant according to FIG. 8 will be discussed.
  • a transverse bore 331 is provided, which represents a throttled connection between the pressure medium connection and the tank port T of the valve arrangement according to the invention due to their small diameter.
  • Spring plates 327, 329 are each integrally formed with a stop pin, the effect of which coincides with that of the stop pins 233, 235 of the first variant according to Figure 8.
  • Set screws 338, 340 are screwed into the valve holes 320, 322 via a respective hexagon socket and thus serve to adjust the respective bias of the springs 234, 236.
  • the screws 338, 340 are fixed with respective lock screws 333, 335, which are also in the respective valve bore 320, 322 are screwed.
  • the lock screws 333, 335 each have a continuous hexagon socket, which is larger than the respective hexagon socket of the screws 338, 340th
  • a retaining ring 337, 339 is inserted into each valve bore 320, 322, so that the screws 338, 340 and their counter-screws 333, 335 are secured against falling out and in particular against pressurized falling out.
  • the second variant of the third exemplary embodiment according to FIG. 9 between the respective spring 234, 236 and the associated adjusting screw 338, 340 has an intermediate piece with sealing ring 341, 343 for sealing, in particular, the pressure chamber of the delivery flow control valve 319 which is acted upon by load-indicating pressure with respect to the environment.
  • FIG. 10 shows the second variant of the third exemplary embodiment according to FIG. 9 in an end view.
  • the following features can be seen, leading to a compact construction of the second variant of the third embodiment of the cartridge 301 according to the invention:
  • the two-flat, consisting of the two parallel planar sections 325 a, 325 b offers the possibility of a (not shown) special tool in plant to bring and screw the cartridge 301 into or out.
  • the two valve bores 220, 222 can be used as a device for torque transmission as an alternative to the biface, of which only one planar section 225a is shown in FIG. 7, so that the installation cartridge 201 can be screwed into the variable displacement pump via a special tool according to FIG.
  • sealing rings according to the sealing rings 341, 343 shown in FIG. 9 can also be provided on the discs 237, 239.
  • a transverse bore according to the transverse bore 331 shown in FIGS. 6 and 9 can also be provided on the built-in cartridge 201 to form a throttle.
  • valve assembly with at least two valves and with a housing which is designed as a built-in cartridge.
  • the valve assembly may e.g. have two valves, one of which is a pressure regulator and the other is a flow regulator.
  • Such a valve arrangement may e.g. be used or screwed into a variable displacement pump, whereby the space requirement of the valve assembly can be minimized.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Valve Housings (AREA)
  • Safety Valves (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne un ensemble de vannes, avec au moins deux vannes (217, 219) et avec un boîtier réalisé sous forme de cartouche incorporable (201). L'ensemble de vannes peut comporter, par exemple, deux vannes dont l'une est un régulateur de pression et l'autre un régulateur de débit. Un ensemble de vannes de ce type peut être inséré ou vissé, par exemple, dans une pompe à cylindrée variable, ce qui permet de minimiser l'encombrement dudit ensemble.
EP11714692A 2010-04-16 2011-03-30 Ensemble de vannes Withdrawn EP2558755A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010015196 2010-04-16
DE102010048068.1A DE102010048068B4 (de) 2010-04-16 2010-10-09 Ventilanordnung
PCT/EP2011/001609 WO2011141094A1 (fr) 2010-04-16 2011-03-30 Ensemble de vannes

Publications (1)

Publication Number Publication Date
EP2558755A1 true EP2558755A1 (fr) 2013-02-20

Family

ID=44730869

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11714692A Withdrawn EP2558755A1 (fr) 2010-04-16 2011-03-30 Ensemble de vannes

Country Status (5)

Country Link
US (2) US8985138B2 (fr)
EP (1) EP2558755A1 (fr)
CN (1) CN102959293B (fr)
DE (1) DE102010048068B4 (fr)
WO (1) WO2011141094A1 (fr)

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CN102959293B (zh) 2014-11-19
US8985138B2 (en) 2015-03-24
DE102010048068A1 (de) 2011-10-20
US9441756B2 (en) 2016-09-13
WO2011141094A1 (fr) 2011-11-17
US20130126010A1 (en) 2013-05-23
CN102959293A (zh) 2013-03-06
DE102010048068B4 (de) 2022-11-10
US20150226349A1 (en) 2015-08-13

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