NL2011846C2 - Flow control valve. - Google Patents

Flow control valve. Download PDF

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Publication number
NL2011846C2
NL2011846C2 NL2011846A NL2011846A NL2011846C2 NL 2011846 C2 NL2011846 C2 NL 2011846C2 NL 2011846 A NL2011846 A NL 2011846A NL 2011846 A NL2011846 A NL 2011846A NL 2011846 C2 NL2011846 C2 NL 2011846C2
Authority
NL
Netherlands
Prior art keywords
shaft
housing
thread
groove
longitudinal direction
Prior art date
Application number
NL2011846A
Other languages
Dutch (nl)
Inventor
Hoore Daan D
Original Assignee
Fes Developments B V
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 Fes Developments B V filed Critical Fes Developments B V
Priority to NL2011846A priority Critical patent/NL2011846C2/en
Application granted granted Critical
Publication of NL2011846C2 publication Critical patent/NL2011846C2/en

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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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F16K1/40—Valve members of helical shape
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
    • F16K47/06—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member with a throttle in the form of a helical channel
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
    • F16K47/12—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths the throttling channel being of helical form

Description

Flow control valve TECHNOLOGICAL FIELD
The invention is in the field of flow control valves. STATE OF THE ART W02008/146467 teaches a flow control valve, which increases or decreases a flow rate widely and monotonously according to the turn of an operation knob and which has so little internal wear that it does not have any remarkable characteristic deterioration even if abrasion powder or foreign substance should exist in the flow passage. Also provided are a dial position deciding scale, a program and so on for setting the flow rate conveniently and easily when the flow control valve is set to a target flow rate. The flow control valve comprises a sliding shaft and a sliding cylindrical face fitted so mutually as to slide in the axial directions, and a moving mechanism for moving the sliding shaft in the axial directions. At least one of the sliding shaft and the sliding cylindrical face has a plurality of taper grooves formed to have a specific region acting as a fluid passage. These taper grooves are shaped to have their flow resistances gradually decreased or increased along the longitudinal direction.
BACKGROUND OF THE INVENTION
Existing flow control valves suffer from wear and tear and plugging, particularly when flows with some solid particles have to be controlled and particularly when the pressure drop over the valve is high.
OBJECTS OF THE INVENTION
It is an object of the invention to resolve or at least deminish these problems and to provide a flow control valve which has increased resistance against wear and tear, is during use less noisy than prior art control valves, and which can be easily employed for the control of flow rates of fluids and gases with high pressure drops measured over the valve, also when the controlled flow comprises solid particles.
SUMMARY OF THE INVENTION
The flow control valve of the invention comprises a housing with a cyclindrical inner face provided with housing screw thread defining between said housing screw thread a hous ing groove, and comprising a shaft with a shaft screw thread defining between said shaft screw thread a shaft groove, wherein said shaft is slidably and rotationally mounted in said housing, and wherein the said shaft screw thread has an increasing dimension in the shaft's longitudinal direction, and wherein the housing groove has an increasing dimension in the shaft's longitudinal direction, wherein the housing screw thread projects into the shaft groove and the shaft screw thread projects into the housing groove to define a flow channel between the housing screw thread and the shaft screw thread, and wherein the cross dimensions of the flow channel are constant in the longitudinal direction of the shaft yet variable by rotation of the shaft in the housing between a fully open and a fully closed position.
Accordingly the flow control valve of the invention is provided with a shaft screw thread having an increasing thickness in the shaft's longitudinal direction and a housing groove having a correspomdingly increasing width in said shaft's longitudinal direction, wherein in a closed position of the valve the shaft screw thread completely fits in the housing groove without leaving any open space, and that the cross dimensions of the flow channel are variable by rotation of the shaft in the housing, and that when opening the valve a helical flow channel arises through which channel a fluid can pass.
The flow control valve of the invention provides accurate and reliable control of flow rates with increased standing time of the valve due to reduced wear and tear.
BRIEF DECRIPTION OF THE DRAWING
The invention will hereinafter be elucidated with reference to the drawing of a schematic example of a flow control valve according to the invention which is not limiting the appended claim.
In the drawing: -figure 1 schematically shows the shaft and the housing of the flow control valve of the invention in a first open position; -figure 2 schematically shows the shaft in the housing of the flow control valve of the invention in a second closed position; -figure 3 shows the flow control valve of figure 1 and figure 2 in a partly open three-dimensional view.
Whenever in the figures the same reference numerals are applied, these numerals refer to the same parts.
DETAILED DESCRIPTION
Referring to figure 1 the flow control valve 1 of the invention is shown comprising a housing 2 with a cyclindrical inner face 2' provided with a helical groove 5 and a shaft 3 with a helical shaft screw thread 4. The housing 2 has an input flange 6 and an output flange 7, for the supply respectively discharge of the gas or fluid flow that has to be controlled.
The shaft 3 is slidably and rotationally mounted in said housing 2, and when looked into one direction the said shaft screw thread 4 has an increasing thickness in the shaft's longitudinal direction. The housing's cylindrical inner face 2' is provided with a helical housing groove 5 with an increasing width, cooperating with the shaft screw thread 4 to define a flow channel 9 between the housing groove 5 and the shaft screw thread 4.
The cross dimensions of the flow channel 9 are variable by rotation of the shaft 3 in the housing 2. The shaft 3 is for this purpose at one end provided with a turning knob 8 to rotate the shaft 3 in the housing 2 and adjust the crossdimensions of the flow channel or passage 9.
As mentioned the shaft 3 has shaft screw thread 4 of increasing thickness in the shaft's longitudinal direction, and likewise the housing 2 has a cylindrical inner face 2' which is provided with housing groove 5 cooperating with the shaft screw thread 4 to define said flow channel 9 between' the housing screw groove 5 and the shaft screw thread 4. The increase of width of the housing groove 5 has the same value and direction as the increase of thickness of the shaft screw thread 4 so as to arrange that the flow channel 9 defined by the housing groove 5 and the shaft screw thread 4 has constant cross dimensions in the longitudinal direction of the shaft 3.
By adjusting the rotational position of the shaft 3 in the housing 2 the cross dimensions of the flow channel 9 are variable. Figure 2 shows the valve in the second closed position wherein the cross-dimensions of the flow channel 9 have been reduced to zero. When turning the shaft 3, the shaft 3 will move to the right and a flow channel 9 will be created be tween the shaft screw thread 4 and housing groove 5 with constant cross dimensions. The cross dimensions of the channel 9 increase when the shaft is further rotated, until the maximum channel width is attained and the valve is fully open. This is shown in figure 1.
It should be understood that the exemplary embodiment of a flow control valve according to the invention as shown in the drawing is merely for illustrative purposes and should not be used to construe the appended claim as limited to this specific exemplary embodiment. The protective scope of said claim should be construed by its wording only, wherein the exemplary embodiment and the attached drawing may be used for the only purpose to resolve any possible ambiguity regarding the meaning of the wording in the claim. Any variation to the construction of the flow control valve is deemed embraced by said claim provided such variation does not depart from the claims wording.

Claims (2)

1. Stroomregelklep (1) omvattende een huis (2) met een cilindrisch binnenoppervlak (2') voorzien van behuizing-schroefdraad (5') welke tussen genoemd behuizingschroefdraad (5') een behuizinggroef (5) definieert, en omvattende een schacht (3) met een schachtschroefdraad (4) welke tussen genoemde schachtschroefdraad (4) een schachtgroef (4') bepaalt, waarbij genoemde schacht (3) verschuifbaar en roteerbaar gemonteerd is in genoemde behuizing (2), en waarbij de genoemde schachtschroefdraad (4) een toenemende afmeting bezit in de longitudinale richting van de schacht, en waarbij de behuizinggroef (5) een toenemende afmeting bezit in de longitudinale richting van de schacht, waarbij de behuizingschroefdraad (5') uitsteekt in de schachtgroef (4') en de schachtschroefdraad (4) uitsteekt in de behuizinggroef (5) voor het bepalen van een stromingskanaal (9) tussen de behuizingschroefdraad (5') en de schachtschroefdraad (4), en waarbij de dwarsafme-tingen van het stroomkanaal (9) constant zijn in de longitudinale richting van de schacht en variabel door rotatie van de schacht (3) in de behuizing (2) tussen een volledig open en een volledig gesloten positie.A flow control valve (1) comprising a housing (2) with a cylindrical inner surface (2 ') provided with housing screw thread (5') defining a housing groove (5) between said housing screw thread (5 '), and comprising a shaft (3) ) with a shaft thread (4) defining a shaft groove (4 ') between said shaft thread (4), said shaft (3) being slidably and rotatably mounted in said housing (2), and wherein said shaft thread (4) has an increasing has dimension in the longitudinal direction of the shaft, and wherein the housing groove (5) has an increasing dimension in the longitudinal direction of the shaft, with the housing thread (5 ') protruding into the shaft groove (4') and the shaft screw thread (4) protruding into the housing groove (5) for determining a flow channel (9) between the housing thread (5 ') and the shaft thread (4), and wherein the transverse dimensions of the flow channel (9) are constant n the longitudinal direction of the shaft and variable by rotation of the shaft (3) in the housing (2) between a fully open and a fully closed position. 2. Stroomregelklep (1) volgens conclusie 1, waarbij de schachtschroefdraad (4) een toenemende dikte bezit in de longitudinale richting van de schacht en de behuizinggroef (5) een gelijk toenemende dikte bezit in de genoemde longitudinale richting van de schacht, waarbij in een gesloten positie van de klep de schachtschroefdraad (4) volledig past in de behuizinggroef (5) zonder daarbij enige open ruimte open te laten, en dat de dwarsafmetingen van het stroomkanaal (9) variabel zijn door rotatie van de schacht (3) in de behuizing (2), en dat wanneer de klep wordt geopend een helixvormig stroomkanaal (9) ontstaat door welke een vloeistroom kan passeren.The flow control valve (1) according to claim 1, wherein the shaft thread (4) has an increasing thickness in the longitudinal direction of the shaft and the housing groove (5) has an equally increasing thickness in said longitudinal direction of the shaft, wherein in a In the closed position of the valve the shaft thread (4) fits completely into the housing groove (5) without leaving any open space, and that the transverse dimensions of the flow channel (9) are variable due to rotation of the shaft (3) in the housing (2), and that when the valve is opened a helical flow channel (9) is created through which a flow of fluid can pass.
NL2011846A 2013-11-27 2013-11-27 Flow control valve. NL2011846C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2011846A NL2011846C2 (en) 2013-11-27 2013-11-27 Flow control valve.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2011846 2013-11-27
NL2011846A NL2011846C2 (en) 2013-11-27 2013-11-27 Flow control valve.

Publications (1)

Publication Number Publication Date
NL2011846C2 true NL2011846C2 (en) 2015-06-01

Family

ID=50156852

Family Applications (1)

Application Number Title Priority Date Filing Date
NL2011846A NL2011846C2 (en) 2013-11-27 2013-11-27 Flow control valve.

Country Status (1)

Country Link
NL (1) NL2011846C2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4857224A (en) * 1971-10-16 1973-08-11
US3841354A (en) * 1973-05-22 1974-10-15 R Mcdonnell Flow regulating device
SU509754A1 (en) * 1972-11-29 1976-04-05 Предприятие П/Я А-7755 Screw adjustable choke
US4044991A (en) * 1975-10-06 1977-08-30 Consolidated Controls Corporation High energy loss fluid flow control device
US20020027212A1 (en) * 2000-08-22 2002-03-07 Martin Johnson Dispensing valve with helical flow orifice
US20050224737A1 (en) * 2004-04-08 2005-10-13 Mihaylov Gueorgui M Hybrid flow metering valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4857224A (en) * 1971-10-16 1973-08-11
SU509754A1 (en) * 1972-11-29 1976-04-05 Предприятие П/Я А-7755 Screw adjustable choke
US3841354A (en) * 1973-05-22 1974-10-15 R Mcdonnell Flow regulating device
US4044991A (en) * 1975-10-06 1977-08-30 Consolidated Controls Corporation High energy loss fluid flow control device
US20020027212A1 (en) * 2000-08-22 2002-03-07 Martin Johnson Dispensing valve with helical flow orifice
US20050224737A1 (en) * 2004-04-08 2005-10-13 Mihaylov Gueorgui M Hybrid flow metering valve

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Effective date: 20171201