GB2390413A - An adjustable hydraulic flow control valve - Google Patents
An adjustable hydraulic flow control valve Download PDFInfo
- Publication number
- GB2390413A GB2390413A GB0215612A GB0215612A GB2390413A GB 2390413 A GB2390413 A GB 2390413A GB 0215612 A GB0215612 A GB 0215612A GB 0215612 A GB0215612 A GB 0215612A GB 2390413 A GB2390413 A GB 2390413A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- valve
- stem
- hydraulic
- bores
- 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- Withdrawn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
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
An hydraulic valve with a disc 62 mounted at or near a first end of a stem 60 that runs through a central bore 52 and between a plurality of axially offset bores 56, a resilient loading means 69 extending between the valve body (51, fig. 3) and the disc 62, the disc being displaceable by the resilient loading means 69 between: a first, shut, position when the disc is located on the valve seat 58 to cause the disc to block the bores 56; and a second, open, position when the disc 62 is maintained clear of the valve seat 58 with an anchorage means located at or near the second end of the body; the stem 60 adjustably engaging the anchorage means to enable a variation in length of the resilient loading 69 and so the size of the gap between the disc 62 and the valve seat 58. The valve being suitable for mounting in a secondary body to facilitate connection to a hydraulic circuit.
Description
HYDRAULIC VALVE
This invention relates to a hydraulic valve. It is particularly concerned with a valve for use in hydraulic circuits to provide for controlling the flow of pressurised hydraulic fluid in the circuit which reaches a predetermined pressure. Typically the valve provides for adjustment such that the release pressure can be adjusted.
According to the present invention there is provided a hydraulic valve comprising: a valve body having a first longitudinal end and a second longitudinal end; a longitudinal bore extending partway through the valve body from the second end to a position intermediate the first and second longitudinal end; a closure for the longitudinal bore at or near the second longitudinal end; at least two bores extending through the closure each bore providing a passage for hydraulic fluid through the valve body from the longitudinal bore; a valve seat at or near the first end of the valve body into which a first end of each bore opens; a stem having a first end engaging the closure and a second end extending beyond the second longitudinal end of the body; the first end of the stem engaging the closure by way of a means enabling the degree of extension of the second end beyond the second longitudinal end to be adjusted; a disc slidably mounted on the stem a retaining means on the stem limiting the travel of disc in direction away from the valve body; a resilient loading means extending between the body and the disc to provide for the disc to be displaceable between: a first, shut, position when the disc is driven onto the valve seat against the action of the resilient means by a hydraulic pressure differential maintained across the valve body so as to cause the disc to obturate the first end of each of the plurality of bores and so prevent the passage of fluid through the valve body; and
a second, open, position when the disc is urged by the resilient means clear of the first end of each of the plurality of bores so as to enable the passage of fluid through the valve body.
Typically the hydraulic valve of the present invention can be mounted in a secondary body by means of which the valve is mounted in a hydraulic circuit.
An exemplary embodiment of the present invention will now be described with reference to the accompanying drawings of a hydraulic valve of which: Figure 1 is a sectional elevation of a valve body; Figure 2is an end view of the body of Figure 1 from direction II Figure 3 is an end view of the body of Figure 1 from direction III; and Figure 4 is a sectional elevation of a completed valve assembly comprising the body of Figure 1 along with further components.
The drawings variously show a valve 50 is made up of a body 51 with longitudinal axis A. A blind ended central bore 52 extends axially through body 51 from end 53 to integral closure 54. The closure 54 has a central threaded bore 55 and four axial bores 56 equi-spaced about, and parallel to, axis A. The bores 55 extend through the closure 54 from inner face 57 to outer face 58.
Stem 60 (Figure 4) has an external thread 61 complementing that of threaded bore 55 of the closure 54 to enable the stem 53 to be screwed in or out relative to the body 51.
Disc62is located for axial displacement on end 63 of stem 60 being limited in outward movement by a retainer 64. At opposite end 65 of stem 60 there is provided an integral head 66 with a hexagonal inset 67. The inset 67 serves to receive one end of a hexagonal spanner inserted into the valve body 51 from end 53 to enable the position of the stem 60 to be adjusted relative to the body 51 by screwing the stem 60 in or out.
In this way gap G between disc 62 and outer face 58 of the closure can be varied depending on the required flow through the valve 50.
The closure 54 is provided with a recess 68 in which is located a compression spring 69 whose inner end seats on annular back wall 70 of the recess 68.
The spring 69 provides for resilient loading of the disc 62.
The body 51 has external threaded section 71, 72 whereby the valve 50 can be mounted into a hydraulic assembly and an integral hexagonal section 73 to enable the body to be rotated or held in place during installation of the valve 50.
In use the assembled valve 50 is installed into a hydraulic fluid circuit normally providing for the higher hydraulic fluid pressure to be located on side P of the valve (Figure 4) and the lower pressure on side Q. The transmission hydraulic fluid pressure is by way of end 53, through bore 52, bores 56, and gap G. The compression spring 69 serves to maintain gap G. In the event of the hydraulic pressure across the valve being reversed so that hydraulic pressure on side Q of the valve is greater than that on side P. as can arise in the event of component or structural failure elsewhere in the hydraulic circuit on side P of the valve 50, then the pressure differential serves to drive the disc 62 down onto outer face 58 so shutting off the outer ends of bores 56 and preventing further transmission of hydraulic pressure from side Q to side P. Among other things this serves to prevent hydraulic fluid loss from parts of the circuit communicating with side Q that is to say those parts of the circuit now upstream of valve 50.
The use of the valve 50 provides for the safe operation of hydraulic circuitry and related equipment with which it is utilised. One particular field of hydraulic operation
with which the valve can be used is that of elevator operation and control.
Claims (3)
1 An hydraulic valve comprising: a valve body having a first longitudinal end and a second longitudinal end; a stem extending longitudinally slidable relative to the body by way of a bore through the body; at least two bores extending through the body from the first end to the second end; a valve seat at or near the first end of the valve body into which one end of each of the bores opens; a disc mounted at or near a first end of the stem by a retaining means; a resilient loading means extending between the body and the disc and/or the retaining means; the disc being displaceable under the loading of the resilient loading means between: a first, shut, position when the disc is located on the valve seat to cause the disc to obturate the plurality of bores; and a a second, open, position when the disc is maintained clear of the bores by a hydraulic pressure differential maintained across the disc; an anchorage means located at or near the second end of the body; the stem adjustably engaging the anchorage means to enable the stem to be displaced relative to the body by way of the engagement means so as to vary the length of the resilient means and so of the degree of resilient bias imposed by the loading means on the disc.
2 An hydraulic valve as claimed in Claim 1 when mounted in a secondary body
by means of which the valve body is coupled to a hydraulic circuit.
3 An hydraulic valve as hereinbefore described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0215612A GB2390413A (en) | 2002-07-05 | 2002-07-05 | An adjustable hydraulic flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0215612A GB2390413A (en) | 2002-07-05 | 2002-07-05 | An adjustable hydraulic flow control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0215612D0 GB0215612D0 (en) | 2002-08-14 |
| GB2390413A true GB2390413A (en) | 2004-01-07 |
Family
ID=9939926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0215612A Withdrawn GB2390413A (en) | 2002-07-05 | 2002-07-05 | An adjustable hydraulic flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2390413A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2204757A (en) * | 1938-01-20 | 1940-06-18 | Henry C Henze | Safety valve |
| US2357321A (en) * | 1941-05-16 | 1944-09-05 | Acrotorque Co | Control |
| CH357250A (en) * | 1959-10-19 | 1961-09-30 | Matteis Jacques De | Automatic valve for the regeneration of an absorbent filter |
| DE2500552B1 (en) * | 1975-01-08 | 1976-06-10 | Heilmeier & Weinlein | Safety valve for high pressure hydraulic system - automatically shuts off flow in event of pipe fracture |
| GB2163532A (en) * | 1984-08-24 | 1986-02-26 | Godiva Fire Pumps Ltd | Flow control valve |
| FR2636379A1 (en) * | 1988-09-09 | 1990-03-16 | Lucas Georges Ets | Anti-bounce safety valve for hydraulic jack or similar. |
| EP0174492B1 (en) * | 1984-09-12 | 1991-03-20 | Robert Bosch Gmbh | Flow control valve |
| WO2002016813A1 (en) * | 2000-08-23 | 2002-02-28 | Gisela Weber | Hydraulic valve |
-
2002
- 2002-07-05 GB GB0215612A patent/GB2390413A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2204757A (en) * | 1938-01-20 | 1940-06-18 | Henry C Henze | Safety valve |
| US2357321A (en) * | 1941-05-16 | 1944-09-05 | Acrotorque Co | Control |
| CH357250A (en) * | 1959-10-19 | 1961-09-30 | Matteis Jacques De | Automatic valve for the regeneration of an absorbent filter |
| DE2500552B1 (en) * | 1975-01-08 | 1976-06-10 | Heilmeier & Weinlein | Safety valve for high pressure hydraulic system - automatically shuts off flow in event of pipe fracture |
| GB2163532A (en) * | 1984-08-24 | 1986-02-26 | Godiva Fire Pumps Ltd | Flow control valve |
| EP0174492B1 (en) * | 1984-09-12 | 1991-03-20 | Robert Bosch Gmbh | Flow control valve |
| FR2636379A1 (en) * | 1988-09-09 | 1990-03-16 | Lucas Georges Ets | Anti-bounce safety valve for hydraulic jack or similar. |
| WO2002016813A1 (en) * | 2000-08-23 | 2002-02-28 | Gisela Weber | Hydraulic valve |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0215612D0 (en) | 2002-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |