GB2094945A - Manually-operable valve means - Google Patents
Manually-operable valve means Download PDFInfo
- Publication number
- GB2094945A GB2094945A GB8207329A GB8207329A GB2094945A GB 2094945 A GB2094945 A GB 2094945A GB 8207329 A GB8207329 A GB 8207329A GB 8207329 A GB8207329 A GB 8207329A GB 2094945 A GB2094945 A GB 2094945A
- Authority
- GB
- United Kingdom
- Prior art keywords
- manually
- operable
- valve
- valve means
- housing
- 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.)
- Granted
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
- 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
Landscapes
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
Manually-operable valve means control the dispensing through an outlet (4) of pressurised fluid from a container. The valve comprises a housing (1) having an inlet (2) for connection to a container, a valve member (3) in the housing (1) which incorporates the outlet (4) and engages a seating (7) surrounding the inlet (2). A manually-operable member (5) has lugs (28) to engage notches (26) on the valve member (3), and a spring (6) acts on the manually- operable member (5) to urge the valve member (3) into a closed position. Manual operation of the member (5), against the loading in the spring (6), allows fluid pressure to move the valve member (3) axially away from the seating (7) and into an open position. The valve means is provided with a locking mechanism (32) which, on angular movement of the member (5) acts to retain the member (5) in a position in which the valve is open. The locking mechanism (32) consists of cooperating parts on the member (5) and the housing (1), and may be lugs (33, 36) or a pin and slot mechanism (not shown). <IMAGE>
Description
SPECIFICATION
Improvements in manually-operable valve means
This invention relates to manually-operable valve means of the kind operable to control the dispensing, through an outlet, of pressurised fluid from a container.
Valve means of the kind set forth are used,, for example, in horticultural sprayers for controlling the dispensing of pressurised liquid from the container through a spray nozzle outlet. In valve means of the kind set forth where the valve means and the outlet are remote from the container, the valve means is generally housed in a body interposed between a line connected to the container and the outlet, and comprises a valve member upon which a spring acts directly to urge it into a closed position preventing fluid flow to the outlet, and a manually-operable member which is operable to move the valve member against the loading in the spring and into an open position allowing fluid to flow to the outlet.
One disadvantage of such a construction is that the pressure'from the fluid in the container and the line acts on the valve member in the same direction as the spring, and so augments the force urging the valve member into the closed position.
According to one aspect of our invention in a manually-operable valve means of the kind set forth where the valve means and the outlet are remote from the container, the valve means comprises a valve housing having an inlet for connection to the container, a valve member located in the housing, the valve member incorporating the outlet and being adapted for engagement with a seating surrounding the inlet, a manually-operable member coupled to the valve member, and a spring acting on the manuallyoperable member to urge the manually-operable member into a retracted position, and to urge the valve member towards the seating and into a closed position, the manually-operable member being movable against the loading in the spring into an advanced position to move the valve member away from the seating and into an open position.
This has the advantage that the valve member is urged into engagement with the seating only by the force in the spring, and the pressure acts on the valve member in opposition to the spring, assisting the manual force applied to the manually-operable member in a direction to open the valve. This means that by selecting a spring of suitable strength the valve will open automatically when a given pressure of fluid in the container acts on the valve member, so that the valve acts as a pressure-relief valve.
Conveniently the manually-operable member and the valve member move axially between the positions.
The manually-operable member has releasable engagements at its opposite ends with the valve member and the housing. The manually-operable member may be provided at one end with spaced
lugs which are received in slots in external radial projections on the valve member to define a coupling. At the opposite end the engagement may comprise projections on the manuallyoperable member which engaged with elongate notches on the housing, or a pin provided on the housing which works in at least one slot in the manually-operabie member.
The valve means may be provided with locking means for retaining the valve in an open position.
The manually-operable member is also angularly movable about the coupling to the valve member, and the valve means is provided with a locking mechanism such that on angular movement of the manually-operable member from the advanced position the locking mechanism is operative to retain the manually-operable member in a position where the valve is in an open position.
The locking mechanism may comprise cooperating lugs on the manually-operable member and the housing, or the pin and slot mechanism. The manually-operable member and the housing may also be provided with means which ensure that the member can move angularly only from the advanced position. These means may comprise the projections and notches which form the releasable engagement between the member and the housing, or, where the pin and slot mechanism is provided, the shape of the slot.
Conveniently, the manually-operable member comprises a push-slide, and the spring comprises a compression spring which acts between the housing and the end of the slide remote from the valve member.
A further aspect of the invention is concerned with the locking means.
According to a further aspect of our invention, a manually-opereable valve means of the kind set forth comprises a valve means having an inlet for connection to the container, a valve member located in the housing, the valve member incorporating the outlet and being adapted for engagement with a seating surrounding the inlet, a manually-operable member coupled to the valve member, and a spring acting on the manuallyoperable member to urge the manuaily-operable member into a retracted position and to urge the valve member towards the seating and into a closed position, the manually-operable member being movable in a first direction into an advanced position against the loading in the spring to move the valve member away from the seating and into an open position, the valve means being provided with locking means and the manually-operable member being movable in a second direction, such that on movement of the manually-operable member from the advanced position in the second direction the locking means is operative to retain the manually-operable member in a position in which the valve member is in an open position.
This aspect of our invention provides a valve means which can be used whether the valve means and the outlet are remote from or attached to the container, and has the advantage of providing a simple locking mechanism for the valve means.
Preferably, the first direction of movement of the manually-operable member is axial, and the second direction is angular, conveniently about the coupling to the valve member.
The locking means conveniently comprises a mechanism locking cooperating parts of the
manually-operable member and the housing. In one embodiment the mechanism comprises cooperating lugs on the manually-operable
member and the housing. In an alterantive embodiment the mechanism comprises a pin provided on the housing which cooperates with a slot provided on the manually-operable member.
Further, the member and the housing may be provided with means for ensuring that the manuallysperable member can move angularly only from the advance position. In the first embodiment such means may comprise projections, on the member cooperating with notches in the housing, and in the alternative embodiment the means may comprise the shape of the slot, for example, the slot may be L-shaped.
The manuallysperable member conveniently comprises a push-slide, and the spring comprises a compression spring which acts between the housing and the end of the slide remote from the valve member.
Some embodiments of our invention are illustrated in the accompanying drawings in which:
Figure 1 is a longitudinal section through part of a manually-operable valve means, with the valve member removed;
Figure 2 is a section showing the valve member in position;
Figure 3 is a longitudinal section through part of a further valve means; and
Figure 4 is a side view of part of the valve means of Figure 3.
The manually-operable valve means shown in
Figures 1 and 2 comprises a housing 1 having an
inlet 2 adapted to be connected to a container (not
shown) which is remote from the valve means. A
valve member 3 incorporating an outlet 4 is
located in the housing 1, and is coupled to a
manually-operable member 5 which is acted on by
a spring 6 to urge the valve member 3 into
engagement with a seating 7 surrounding the inlet 2.
The housing 1 is of plastics, and has a
cylindrical handle portion 8 which is provided with
a bore 9 and which is adapted to be connected to
the container by means of a flexible tube 10. The
tube 10 fits over a spigot 11 on the lower end of
the handle 8 surrounding the bore 9, and is
ciamped by a captive nut 12 to make a fluid-tight
connection. The other end of the bore 9 leads to
the inlet 2, which is located in a transverse
generally cylindrical portion 13 of the housing 1.
The portion 13 is provided with a stepped bore 14
in which the valve member 3 is housed.
The valve member 3 comprises a spool 15 of stepped outline which is slidable in the bore 14.
The outer end 1 6 of the spool 1 5 incorporates the outlet 4, and a cap 17 is screwed onto the outer end of the spool so that the outlet 4 comprises a spray nozzle outlet A seal 1 8 is provided between the cap 1 7 and the spool 1 5. The spool 1 5 carries an annular seal 19 at an intermediate point in its length, and seal 19 sealing against the wall of the bore 14. At its inner end the spool 1 5 has a head 20 for engagement with the seating 7 surrounding the inlet 2. The spool 15 is provided with a longitudinally extending pssage 21, whose opposite ends terminate in radial passages 22, 23 at the inner and outer ends of the spool 1 5 respectively.The passage 22 is disposed between the seal 19 and the head 20, while the passage 23 is disposed between the seal 1 7 and the outlet 4.
A substantial amount of the spool 1 5 projects from the bore 14, and the projecting portion of the spool 1 5 is provided at diametrically opposed positions with a pair of longitudinally extending ribs 24 which are received in slots 25 in the housing portion 13. Each rib 24 is provided with a notch 26 at an intermediate point in its length.
The manually-operable member 5 comprises a push-slide 27 which fits on top of the housing portion 13. The slide 27 is of plastics material, and of generally channel shape. At its forward end the slide 27 engages with the spool 1 5 through a pair of resiliently deformable lugs 28 which embrace the spool 15, and are releasably received in the notches 26, and at its rearward end projections (not shown) on the side of the slide 27 are detachably received in elongate notches (not shown) in the rearward end of housing portion 13.
The engagement of the lugs 28 in the notches 26 couple the slide 27 to the spool 15 against relative axial movement, and together with the engagement of the projections in the housing notches, provide a releasable mounting for the slide 27 on the valve member 3 and the housing portion 13. The rearward end of the slide 27 is closed by an inclined wall 29, the inner face of the wall 29 forming an abutment for one end of the compression spring 6, of which the other end abuts against a shoulder 31 on the housing portion 13. The spring 6 acts on the slide 27 to hold it in the retracted position shown, and through the slide 27 to hold the valve member 3 in a closed position with the head 20 in enagement with the seating 7. The slide 27 is movable in an axial direction into an advanced position, against the loading in the spring 6 to move the valve member 3 away from the seating and into an open position. The slide 27 is also movable in an angular direction from the advanced position about the coupling 26, 38 with the spool 1 5. The engagement of the projections in the housing notches also serves to prevent angular movement of the slide 27 except when it is in the advanced position.
A locking means is also provided, which retains the slide 27 in a position in which the valve is held open. The valve means is provided a locking mechanism 32 such that on angular movement of the slide the locking means is operative to retain the slide 27 with the valve in an open position.
The locking mechanism 32 comprises an upstanding lug 33 provided on the housing portion
13, which projects through a longitudinallyextending slot 34 in the slide 27. The lug 33 has a downwardly depending portion 35 which cooperates with a lug 36 on the slide 27 to retain the slide 27 in a fixed position.
In operation the manually-operable valve means is attached to a container of pressurised liquid by a flexible pipe as shown. Liquid can be dispensed from the nozzle outlet 4 in a fine spray by manual operation of the slide 27, a thumb piece being provided on the external face of the wall 29 for this purpose. Movement of the slide 27 by the thumb against the loading in the spring 6 is operative to move the spool 1 5 so that the valve head 20 is disengaged from the seating 7, allowing liquid to pass to the outlet 4 through the passages 22,21 and 23.
Normaily an intermittent spray controlled by
movement of the slide 27 will be required.
However, if a continuous spray is required, the slide 27 is locked in a position in which the valve is open, by the locking mechanism 32. This is achieved by pushing the slide 27 into the advanced position in which the valve is open, and
in which the lug 36 on the slide 27 is forward of the portion 35 of the lug 33 on the housing.
Upward angular movement of the slide 27 then locks the lug 36 in this position against the lug portion 35. The locking mechanism 32 is easiiy released by downward angular movement of the slide 27.
Since the pressurised contents of the container act on the head 20 in a direction to open the valve, and against the loading in the spring 6, careful selection of the strength of the spring 6 enables the valve to act as a pressure-relief valve.
Figures 3 and 4 show part of a further manually-operable valve means, in which the engagement of the manually-operable member with the housing, and the locking mechanism are modified.
In the valve means of Figures 3 and 4 the lugs 33, 36 and the slot 34 are omitted, as are the projections and notches which form the engagement between the manually-operable member 5 and the housing 1. Instead the member 5 engages with the housing 1 through a pin and slot mechanism 40, (see Figure 4), which also acts as the locking mechanism 32. The pin and slot mechanism 40 has a pin 41 which is located in a hole 42 formed in a projection 43 of the housing portion 13. The abutment on the housing portion 13 for the compression spring 6 is also modified, the spring 6 being located round a reduced diameter spigot 44, and abutting the projecting portion 43 of the housing 1. Each end of the pin 41 works in an L-shaped slot 45 in a respective side of the manually-operable slide 27.The slots 45 are shaped so as to permit movement of the slide 27 in a first, axial direction between its retracted and advanced positions in order to open and close the valve. The slots also permit movement of the side 27 in a second, angular, direction about the coupling 26, 28 between the advanced position and a position in which the slide is retained with the valve open.
Thus the pin and slot mechanism 40 acts not only as the engagement between the slide ond the housing, but also as the locking mechanism 32, and ensures that the slide can move angularly only from the advanced position. Figure 4 shows the slide 27 in its retracted position, and in dotted outline, shows the slide 27 in the locked position.
The construction and operation of the embodiment of Figures 3 and 4 is otherwise the same as that described in relation to Figures 1 and 2, and corresponding reference numerals have been applied to corresponding parts.
The valve means with the locking means may also be used in circumstances where the valve means and the outlet are not remote from the container, but are directly attached to the container.
Claims (26)
1. A manually-operable valve means of the kind set forth, in which the valve means and the outlet are remote from the container, the valve means comprising a valve housing having an inlet for connection to the container, a valve member located in the housing, the valve member incorporating the outlet and being adapted for engagement with a seating surrounding the inlet, a manually-operabie member coupled to the valve member, and a spring acting on the manuallyoperable member to urge the manually-operable member into a retained position, and to urge the valve member towards the seating and into a closed position, the manually-operable member being movable against the loading in the spring into an advanced position to move the valve member away from the seating and into an open position.
2. A manually-operable valve means as claimed in claim 1, in which the manually-operable member and the valve member move axially between the positions.
3. A manually-operable valve means as claimed in claim 1 or claim 2, in which the manuallyoperable member has releasable engagements at its opposite ends with the valve member and the housing.
4. A manually-operable valve means as claimed in any preceding claim, in which the manuallyoperable member has spaced lugs which engage in slots in external radial projections on the valve member to define a coupling.
5. A manually-operable valve means as claimed in any preceding claim, in which the manuallyoperable member is provided with projections which engage with elongate notches on the housing.
6. A manually-operable valve means as claimed in any of claims 1 to 4, in which the housing is provided with a pin which works in at least one slot provided on the manually-operable member.
7. A manuallysperable valve means as claimed
in any preceding claim, in which the valve means
is provided with locking means for retaining the valve in an open position.
8. A manually-operable valve means as claimed
in claim 7, in which the manually-operable
member is angularly movable about its coupling with the valve member, and the valve means is
provided with a locking mechanism such that on
angular movement of the manually-operable
member from the advanced position the locking
mechanism is operative to retain the manuallyoperable member in a position where the valve is in an open position.
9. A manually-operable valve means as claimed in claim 8, in which the locking mechanism comprises cooperating lugs on the manuallyoperable member and the housing.
10. A manually-operable valve means as claimed in claim 6 and claim 8, in which the locking mechanism comprises the pin and lot mechanism.
11. A manually-operable valve means as claimed in claim 8, in which the valve means is provided with means to ensure that the manuallyoperable member moves angularly only from the advanced position.
12. A manuallysperable valve means as claimed in claim 5 and claim 11, in which the means comprises the engagement of the projections in the housing notches.
13. A manually-operable valve means as claimed in claim 6 and claim 11, in which the means comprises the shape of the slot of the pin and slot mechanism.
14. A manually-operable valve means as claimed in any preceding claim, in which the manually-operable member comprises a pushslide, and the spring comprises a compression spring which acts between the housing and the end of the slide remote from the valve member.
15. A manually-operable valve means of the kind set forth comprising a valve housing having an inlet for connection to the container, a valve member located in the housing, the valve member incorporating the outlet and being adapted for engagement with a seating surrounding the inlet, a manually-operable member coupled to the valve member, and a spring acting on the manuallyoperable member to urge the manually-operable member into a retracted position and to urge the valve member towards the seating and into a closed position, the manually-operable member being movable in a first direction into an advanced position against the loading in the spring to move the valve member away from the seating and into an open position, the valve means being provided with locking means and the manually-operable member being movable in a second direction, such that on movement of the manually-operable member from the advanced position in the second direction the locking means is operative to retain the manually-operable member in a position in which the valve member is in an open position.
1 6. A manually-operable valve means as claimed in claim 15, in which the first direction of movement of manually-operable member is axial, and the second direction is angular.
17. A manually-operable valve means as claimed in claim 1 6, in which the manuallyoperable member moves angularly about the coupling to the valve member.
1 8. A manually-operable valve means as claimed in any of claims 1 5 to 1 7, in which the locking means comprises a locking mechanism comprising cooperating parts of the manuallyoperable member and the housing.
19. A manually-operable valve means as claimed in claim 18, in which the locking mechanism comprises cooperating lugs on the manually-operable member and the housing.
20. A manually-operable valve means as claimed in claim 18, in which the locking mechanism comprises a pin provided on the housing which cooperates with a slot provided on the manually-operable member
21. A manually-operable valve means as claimed in any of claims 1 5 to 20, in which the manually-operable member and the housing are provided with means to ensure that the manuallyoperable member can move in the second direction only from the advanced position.
22. A manually-operable valve means as claimed in claim 19 and claim 21, in which the means comprises projections on the manuallyoperable member which cooperate with the notches in the housing.
23. A manually-operable valve means as claimed in claim 20 and claim 21, in which the means comprises the shape of the slot of the pin and slot mechanism.
24. A manually-operable valve means as claimed in any of claims 1 5 to 23, in which the manually-operable member comprises a pushslide, and the spring comprises a compression spring which acts between the housing and the end of the slide remote from the valve member.
25. A manually-operable valve means for the kind set forth substantially as herein described with reference to and as illustrated in Figures 1 and 2 of the accompanying drawings.
26. A manually-operable valve means of the kind set forth substantially as herein described with reference to and as illustrated in Figures 3 and 4 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8207329A GB2094945B (en) | 1981-03-12 | 1982-03-12 | Manually-operable valve means |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8107779 | 1981-03-12 | ||
| GB8207329A GB2094945B (en) | 1981-03-12 | 1982-03-12 | Manually-operable valve means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2094945A true GB2094945A (en) | 1982-09-22 |
| GB2094945B GB2094945B (en) | 1985-04-03 |
Family
ID=26278735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8207329A Expired GB2094945B (en) | 1981-03-12 | 1982-03-12 | Manually-operable valve means |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2094945B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6119576A (en) * | 1996-01-15 | 2000-09-19 | Isachsen; Oeyvind | Method and system for automatic determination of ammunition type, and the use thereof |
| CN110735521A (en) * | 2019-10-24 | 2020-01-31 | 许冬斌 | ceramic tile crack beautifying agent applicator |
-
1982
- 1982-03-12 GB GB8207329A patent/GB2094945B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6119576A (en) * | 1996-01-15 | 2000-09-19 | Isachsen; Oeyvind | Method and system for automatic determination of ammunition type, and the use thereof |
| CN110735521A (en) * | 2019-10-24 | 2020-01-31 | 许冬斌 | ceramic tile crack beautifying agent applicator |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2094945B (en) | 1985-04-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19980312 |