CN203868434U - Non-return switching mechanism of valve - Google Patents
Non-return switching mechanism of valve Download PDFInfo
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- CN203868434U CN203868434U CN201420278619.4U CN201420278619U CN203868434U CN 203868434 U CN203868434 U CN 203868434U CN 201420278619 U CN201420278619 U CN 201420278619U CN 203868434 U CN203868434 U CN 203868434U
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- valve
- return
- switching mechanism
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- rod
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Abstract
The utility model provides a non-return switching mechanism of a valve and belongs to the technical field of valves. The non-return switching mechanism of the valve solves the problems that the non-return switching function can not be achieved by an existing valve. The non-return switching mechanism of the valve is arranged at the water inflow end of a valve body and comprises a spring and a non-return valve element, and the two ends of the spring are connected to the inner end of the non-return valve element and the inner wall of the valve body respectively. The non-return switching mechanism of the valve further comprises an annular sealing cover fixed in the valve body and close to a water inflow end opening, and a switching rod, the outer end of the non-return valve element abuts against the inner end of the annular sealing cover under the action of elastic force of the spring to form sealing, the switching rod is perpendicular to the water inflow direction, the upper end of the switching rod stretches out of the valve body, convex bars are arranged on the sides of the switching rod, and the convex bars can make contact with the outer end of the non-return valve element when the switching rod rotates and make the non-return valve element overcome the action of elastic force of the spring to move inwards. According to the non-return switching mechanism of the valve, due to the fact that the switching rod is arranged in the valve body and the convex bars are arranged on the switching rod, the switching rod rotates to drive the convex bars to change the direction, and the non-return switching function of the valve can be achieved.
Description
Technical field
The utility model belongs to valve technology field, relates to a kind of non-return switching mechanism of valve.
Background technique
In order to make fluid reach the object of one-way flow in valve, often on valve, set up non-return structure.
For example, Chinese utility model patent (application number: 201320025962.3; Notice of authorization number: CN203036028U) disclose one and blocked safety check, comprise valve body, valve body comprises the portion of blocking and non-return portion, and the portion of blocking comprises cut-off valve and blocks chamber, and cut-off valve is connected with valve body and is positioned at and blocks above chamber; Non-return portion comprises spring, flap and check cavity, and spring and flap are placed in check cavity, and spring one end is connected with flap.This valve is integrated into non-return and cut-out on a valve, and structure is comparatively compact, and this valve can reach the effect of one-directional fluid flow.
In actual applications, in the time that fluid situation is poor, in order to prevent that fluid from flowing backwards, valve need possess check function; In the time that fluid situation is comparatively stablized always, valve does not need check function.But in above-mentioned safety check, but due to the setting of spring, even in the time that valve does not need check function, when flowing through valve, fluid is still subject to certain resistance, affect the flow through discharge value of valve of fluid, that is to say, above-mentioned valve cannot be realized the switching over of check function.
Summary of the invention
The purpose of this utility model is the problems referred to above that exist for prior art, has proposed a kind of non-return switching mechanism of the valve that can realize check function switching switching.
The purpose of this utility model can realize by following technical proposal: a kind of non-return switching mechanism of valve, be arranged at the feed-water end place of valve body, this non-return switching mechanism comprises a spring and non-return valve core, the two ends of described spring are connected on the inner of non-return valve core and the inwall of valve body, it is characterized in that, this non-return switching mechanism also comprises the ring-shaped sealing sleeve and the changer lever that are fixed on close feed-water end port in valve body, the outer end of described non-return valve core is resisted against on ring-shaped sealing sleeve the inner and forms and seal under the elastic force effect of spring, described changer lever stretches out outside valve body with water inlet direction upper end perpendicular and changer lever, the sidepiece of described changer lever has raised line, described raised line can contact with non-return valve core outer end and makes non-return valve core overcome spring force effect and move inward in the time that changer lever rotates.
Valve body is stretched out in changer lever upper end, and operator can open and close to switch non-return at the valve body external rotating changer lever of valve.In the time needing the check function of Open valve, rotate changer lever and make the raised line on changer lever depart from non-return valve core.Under the effect of spring, non-return valve core can be resisted against ring packing and put to realize check function.Ring-shaped sealing sleeve also seals in valve body.In the time needing the check function of throttle down, rotate changer lever the raised line on changer lever is resisted against on non-return valve core, non-return valve core overcomes spring force and moves inward, and now, the check function of valve is closed.
Therefore,, under the effect of this switching mechanism, the check function of valve can open and close switching mutually under two states.In the time not needing check function, check function that can throttle down, the resistance that while flowing through valve to reduce fluid, fluid is subject to, increases the discharge value of valve.
Valve body is stretched out in the upper end of changer lever, make operator to the operation of this switching mechanism also more for convenience.
In the non-return switching mechanism of above-mentioned valve, described changer lever comprises the body of rod and is sheathed on the connecting sleeve on the body of rod, described raised line is positioned at the sidepiece of connecting sleeve, described connecting sleeve and the body of rod are circumferentially fixing, the middle part of the described body of rod is fixed with split washer, and the base abuts of described connecting sleeve is on split washer.When assembling, first connecting sleeve is placed in valve body, the body of rod inserts valve body from valve body is outside, and the body of rod is through connecting sleeve.After the body of rod has worn, split washer is fixed on to body of rod middle part, connecting sleeve is positioned on the body of rod.Connecting sleeve and the body of rod are circumferentially fixing, just can drive connecting sleeve to rotate at the valve body external rotating body of rod, thereby change the orientation of raised line, realize the switching effect of check function.
In the non-return switching mechanism of above-mentioned valve, the inside bottom of described connecting sleeve has the limiting stopper of protrusion, and described body of rod sidepiece correspondence has the position-limitting mouth matching with limiting stopper shape, and described limiting stopper is positioned at position-limitting mouth place.Limiting stopper and position-limitting mouth are set respectively on connecting sleeve and the body of rod, realize the circumferentially fixing of connecting sleeve and the body of rod, add the setting of split washer, connecting sleeve is located mutually with the body of rod, makes the structure of this mechanism comparatively stable.
In the non-return switching mechanism of above-mentioned valve, the quantity of described raised line is the sidepiece that two and two raised lines are symmetrically distributed in connecting sleeve.That is to say, two raised lines are located on the same line.When this mechanism works, only need to rotate 90 °, just can make valve between the switching of check function, realize switching, operation more for convenience.
In the non-return switching mechanism of above-mentioned valve, the described body of rod through ring-shaped sealing sleeve, has mounting hole on described valve inleting water end, and the upper end of the described body of rod is positioned at mounting hole place and has the joint for being connected with instrument in the upper end portion of the body of rod.The connection part of the body of rod is in the mounting hole place of valve body, and easy-to-operat personnel rotate the body of rod by instrument, makes the operation of this switching mechanism more for convenience.The body of rod, through ring-shaped sealing sleeve, makes ring-shaped sealing sleeve also play positioning action to the body of rod, makes the structure of this mechanism more stable.
In the non-return switching mechanism of above-mentioned valve, described non-return valve core is round table-like and non-return valve core and increases gradually to the inner from its outer end, the inner side of described ring-shaped sealing sleeve the inner has the sealing surface matching with non-return valve core outer end, described non-return valve core sidepiece is provided with O type circle near its outer end place, and described O type circle is resisted against on above-mentioned sealing surface.The sealing surface of non-return valve core and ring-shaped sealing sleeve matches and O type circle is set on non-return valve core, makes the sealing effect between non-return valve core and ring-shaped sealing sleeve better.Certainly,, except round table-like, the shape of non-return valve core can be also that other is suitable for the shape that can form sealing between ring-shaped sealing sleeve.
In the non-return switching mechanism of above-mentioned valve, described non-return valve core the inner is evenly equipped with the positioning block of some protrusions, on described positioning block, have stepped locating face, one end of described spring is set on positioning block and this end of spring is resisted against the bottom of locating face.Be provided for the positioning block of sheathed spring one end in non-return valve core the inner, make the connection between spring and non-return valve core comparatively stable.
In the non-return switching mechanism of above-mentioned valve, the outer end of described non-return valve core is evenly equipped with the gib block of some protrusions, and described gib block stretches in ring-shaped sealing sleeve.In the process of switching mechanism operation, gib block abuts in ring-shaped sealing sleeve inner side always, makes the movement direction of non-return valve core in moving process comparatively steady, thereby makes the check function of Zhi Ben mechanism realize comparatively stable.
In the non-return switching mechanism of above-mentioned valve, described valve interior wall has stepped attachment face near feed-water end port, the side of the outer end of described ring-shaped sealing sleeve and above-mentioned attachment face fit, in described valve body, be also fixed with a hole back-up ring near feed-water end port, the outer end of described ring-shaped sealing sleeve is resisted against hole with on back-up ring.When installation, ring-shaped sealing sleeve is packed in valve body, then hole is fixed to feed-water end port with back-up ring, hole is positioned at ring-shaped sealing sleeve in valve body with back-up ring.
In the non-return switching mechanism of above-mentioned valve, between described ring-shaped sealing sleeve and valve body, be provided with seal ring one.Under the acting in conjunction of seal ring one, ring-shaped sealing sleeve, non-return valve core and O type circle, make the sealing of this mechanism in the time playing check function better.
In the non-return switching mechanism of above-mentioned valve, between described changer lever and valve body, be provided with seal ring two.Seal ring two not only seals between the body of rod and valve body, and after the body of rod turns an angle, the frictional force between seal ring two and valve body can also make the relative valve body of body of rod location.
In the non-return switching mechanism of above-mentioned valve, described changer lever lower end is located in ring packing and puts.Changer lever lower end coordinates with ring-shaped sealing sleeve, realizes location, changer lever lower end, makes changer lever comparatively stable in the time rotating.
In the non-return switching mechanism of above-mentioned valve, on described raised line for thering is arc surface on the one end contacting with non-return valve core.Arc surface is set on raised line, make between raised line and non-return valve core contact comparatively smooth and easy, the operation of easy-to-operat personnel to changer lever.
Compared with prior art, the non-return switching mechanism of this valve is owing to changer lever being set in valve body and raised line is set on changer lever, and changer lever rotates and drives raised line to change orientation, realizes the effect that valve check function is switched.
Brief description of the drawings
Fig. 1 is that this switching mechanism is positioned at the stereogram on a kind of valve;
Fig. 2 is the sectional view of this switching mechanism in switching state one;
Fig. 3 is the sectional view of this switching mechanism in switching state two;
Fig. 4 is the blast structural drawing at non-return valve core place in this switching mechanism;
Fig. 5 is the blast structural drawing at changer lever place in this switching mechanism.
In figure, 1, valve body; 1a, mounting hole; 1b, convex shoulder one; 2, spring; 3, non-return valve core; 3a, positioning block; 3b, gib block; 3c, locating face; 4, ring-shaped sealing sleeve; 4a, sealing surface; 5, changer lever; 5a, the body of rod; 5b, connecting sleeve; 5c, limiting stopper; 5d, position-limitting mouth; 5e, joint; 5f, raised line; 7, split washer; 8, O type circle; 9, hole back-up ring; 10, seal ring one; 11, seal ring two.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, the non-return switching mechanism of this valve is arranged at the feed-water end place of valve 1.
As shown in Figure 1 to Figure 3, this non-return switching mechanism comprises a spring 2 and non-return valve core 3.In valve body 1, have convex shoulder one 1b, it is upper that the two ends of spring 2 are connected to convex shoulder one 1b in the inner and the valve body 1 of non-return valve core 3, and under the effect of spring 2, non-return valve core 3 has the trend of outside movement.As shown in Figure 3, when this mechanism is during in non-return state, non-return valve core 3 is resisted against on ring-shaped sealing sleeve 4.
Valve body 1 inwall has stepped attachment face near feed-water end port, the side of the outer end of ring-shaped sealing sleeve 4 and above-mentioned attachment face fit, valve body 1 is interior is also fixed with a back-up ring 9 for hole near feed-water end port, and the outer end of ring-shaped sealing sleeve 4 is resisted against hole with on back-up ring 9.Between ring-shaped sealing sleeve 4 and valve body 1, be provided with seal ring 2 11.
When installation, ring-shaped sealing sleeve 4 is packed in valve body 1, then hole is fixed to feed-water end port with back-up ring 9, hole is positioned at ring-shaped sealing sleeve 4 in valve body 1 with back-up ring 9.Attachment face is set, prevents that ring-shaped sealing sleeve 4 is inner mobile to valve body 1, back-up ring 9 for hole is set, prevent that ring-shaped sealing sleeve 4 from outwards moving, use under the style of work of back-up ring 9 at attachment face and hole, O-ring seal is positioned in the feed-water end port of valve body 1.
Non-return valve core 3 is round table-like and non-return valve core 3 and increases gradually to the inner from its outer end, the inner side of ring-shaped sealing sleeve 4 the inners has the sealing surface 4a matching with non-return valve core 3 outer ends, non-return valve core 3 sidepieces are provided with O type circle 8 near its outer end place, and O type circle 8 is resisted against on above-mentioned sealing surface 4a.Non-return valve core 3 matches and O type circle 8 is set on non-return valve core 3 with the sealing surface 4a of ring-shaped sealing sleeve 4, makes the sealing effect between non-return valve core 3 and ring-shaped sealing sleeve 4 better.
As shown in Figure 4, non-return valve core 3 the inners are evenly equipped with four and are uniformly distributed and to projecting inward positioning block 3a, on positioning block 3a, have stepped locating face 3c, one end of spring 2 is set in four positioning block 3a this end upper and spring 2 and is resisted against the bottom of locating face 3c.Like this, between spring 2 and non-return valve core 3 be connected comparatively stable.
In order to prevent that raised line 5f from promoting the rear non-return valve core 3 of non-return valve core 3 and deflecting, be evenly equipped with four outwardly gib block 3b in the outer end of non-return valve core 3, gib block 3b stretches in ring-shaped sealing sleeve 4.In the process of switching mechanism operation, gib block 3b abuts in ring-shaped sealing sleeve 4 inner sides always, makes the movement direction of non-return valve core 3 in moving process comparatively steady, thereby makes the check function of Zhi Ben mechanism realize comparatively stable.
Changer lever 5 comprises the body of rod 5a of vertical setting and is sheathed on the connecting sleeve 5b on body of rod 5a.On valve body 1 feed-water end, have mounting hole 1a, body of rod 5a is from the top down through the mounting hole 1a on valve body 1 and the sidewall of ring-shaped sealing sleeve 4, and body of rod 5a lower end penetrates the sidewall of ring-shaped sealing sleeve 4, that is to say, body of rod 5a lower end is positioned on ring-shaped sealing sleeve 4.Like this, the upper and lower two ends of body of rod 5a are all positioned, and ensure the rotation that changer lever 5 can be stable.The upper end of body of rod 5a is positioned at mounting hole 1a place and has the joint 5e for being connected with instrument in the upper end portion of body of rod 5a.The joint 5e of body of rod 5a is provided with a word fluting.When switching, straight screwdriver is inserted to a word and slot and rotate and just can make this switching mechanism switch under two states.
As shown in Figure 5, the inside bottom of connecting sleeve 5b has the limiting stopper 5c of two symmetries and protrusion, body of rod 5a sidepiece correspondence has two position-limitting mouth 5d that match with limiting stopper 5c shape, limiting stopper 5c and position-limitting mouth 5d recline mutually, pass through the effect axial restraint of limiting stopper 5c and position-limitting mouth 5d between connecting sleeve 5b and body of rod 5a.In the time that body of rod 5a rotates, body of rod 5a can drive connecting sleeve 5b to rotate together.
Connecting sleeve 5b lower end sidepiece has the raised line 5f of two symmetries and protrusion, and two raised line 5f are located on the same line.The direction that one word is offered to paralleling, like this, can clearly be indicated the orientation of raised line 5f, easy-to-operat with the setting party of raised line 5f from valve body 1 outside.The outer end of raised line 5f, namely raised line 5f is upper for having arc surface on the one end contacting with non-return valve core 3, makes to contact comparatively smoothly between raised line 5f and non-return valve core 3, makes this mechanism action more level and smooth.
In the time of assembling, after connecting sleeve 5b is set on body of rod 5a, split washer 7 is fixed on to the middle part of body of rod 5a, the base abuts of connecting sleeve 5b is on split washer 7, and split washer 7 is positioned at connecting sleeve 5b on body of rod 5a.
Between the joint 5e of body of rod 5a and valve body 1, be provided with seal ring 1.Seal ring 1 not only plays seal action between body of rod 5a and valve body 1, has also increased resistance when changer lever 5 rotates, and prevents that changer lever 5 from freely rotating, and makes this mechanism structure comparatively stable.
Now the working procedure of this switching mechanism is described below:
Raised line 5f can contact with non-return valve core 3 outer ends and makes non-return valve core 3 overcome spring 2 elastic force effects and move inward in the time that changer lever 5 rotates.
Valve body 1 is stretched out in changer lever 5 upper ends, and operator can open and close to switch non-return at the valve body of valve 1 external rotating changer lever 5.In the time needing the check function of Open valve, rotate changer lever 5 and make the raised line 5f on changer lever 5 depart from non-return valve core 3.Under the effect of spring 2, non-return valve core 3 can be resisted against on ring-shaped sealing sleeve 4 to realize check function.When the check function that needs throttle down is when realizing the larger discharge value of valve, rotate changer lever 5 the raised line 5f on changer lever 5 is resisted against on non-return valve core 3, non-return valve core 3 overcomes spring 2 elastic force and moves inward, and now, the check function of valve is closed.
Under the effect of this switching mechanism, the check function of valve can open and close switching mutually under two states.In the time not needing check function, check function that can throttle down, the resistance that while flowing through valve to reduce fluid, fluid is subject to, increases the discharge value of valve.
The replacement scheme of easily expecting as another kind, has convex shoulder two on the madial wall of valve body 1, non-return valve core 3 forms sealing after leaning with convex shoulder two.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (10)
1. the non-return switching mechanism of a valve, be arranged at the feed-water end place of valve body (1), this non-return switching mechanism comprises a spring (2) and non-return valve core (3), the two ends of described spring (2) are connected on the inner of non-return valve core (3) and the inwall of valve body (1), it is characterized in that, this non-return switching mechanism also comprises the ring-shaped sealing sleeve (4) and the changer lever (5) that are fixed on close feed-water end port in valve body (1), the outer end of described non-return valve core (3) is resisted against on ring-shaped sealing sleeve (4) the inner and forms and seal under the elastic force effect of spring (2), described changer lever (5) stretches out outside valve body (1) with water inlet direction upper end perpendicular and changer lever (5), the sidepiece of described changer lever (5) has raised line (5f), described raised line (5f) can contact with non-return valve core (3) outer end and makes non-return valve core (3) overcome spring (2) elastic force effect and move inward in the time that changer lever (5) rotates.
2. the non-return switching mechanism of valve according to claim 1, it is characterized in that, described changer lever (5) comprises the body of rod (5a) and is sheathed on the connecting sleeve (5b) on the body of rod (5a), described raised line (5f) is positioned at the sidepiece of connecting sleeve (5b), described connecting sleeve (5b) is circumferentially fixing with the body of rod (5a), the middle part of the described body of rod (5a) is fixed with split washer (7), and the base abuts of described connecting sleeve (5b) is on split washer (7).
3. the non-return switching mechanism of valve according to claim 2, it is characterized in that, the inside bottom of described connecting sleeve (5b) has the limiting stopper (5c) of protrusion, the described body of rod (5a) sidepiece correspondence has the position-limitting mouth (5d) matching with limiting stopper (5c) shape, and described limiting stopper (5c) is positioned at position-limitting mouth (5d) and locates.
4. according to the non-return switching mechanism of the valve described in claim 2 or 3, it is characterized in that, the quantity of described raised line (5f) is the sidepiece that two and two raised lines (5f) are symmetrically distributed in connecting sleeve (5b).
5. according to the non-return switching mechanism of the valve described in claim 2 or 3, it is characterized in that, the described body of rod (5a) is through ring-shaped sealing sleeve (4), on described valve body (1) feed-water end, have mounting hole (1a), the upper end of the described body of rod (5a) is positioned at that mounting hole (1a) is located and has the joint (5e) for being connected with instrument in the upper end portion of the body of rod (5a).
6. according to the non-return switching mechanism of the valve described in claim 1 or 2 or 3, it is characterized in that, described non-return valve core (3) is round table-like and non-return valve core (3) and increases gradually to the inner from its outer end, the described inner inner side of ring-shaped sealing sleeve (4) has the sealing surface (4a) matching with non-return valve core (3) outer end, described non-return valve core (3) sidepiece is provided with O type circle (8) near its outer end place, and described O type circle (8) can be resisted against on above-mentioned sealing surface (4a).
7. according to the non-return switching mechanism of the valve described in claim 1 or 2 or 3, it is characterized in that, described non-return valve core (3) the inner is evenly equipped with the positioning block (3a) of some protrusions, on described positioning block (3a), have stepped locating face (3c), one end of described spring (2) is set in positioning block (3a) this end upper and spring (2) and is resisted against the bottom of locating face (3c).
8. according to the non-return switching mechanism of the valve described in claim 1 or 2 or 3, it is characterized in that, the outer end of described non-return valve core (3) is evenly equipped with the gib block (3b) of some protrusions, and described gib block (3b) stretches in ring-shaped sealing sleeve (4).
9. according to the non-return switching mechanism of the valve described in claim 1 or 2 or 3, it is characterized in that, described valve body (1) inwall has stepped attachment face near feed-water end port, side and the above-mentioned attachment face of the outer end of described ring-shaped sealing sleeve (4) fit, in described valve body (1), be also fixed with a back-up ring for hole (9) near feed-water end port, the outer end of described ring-shaped sealing sleeve (4) is resisted against on back-up ring for hole (9).
10. according to the non-return switching mechanism of the valve described in claim 1 or 2 or 3, it is characterized in that, described changer lever (5) lower end is located on ring-shaped sealing sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420278619.4U CN203868434U (en) | 2014-05-27 | 2014-05-27 | Non-return switching mechanism of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420278619.4U CN203868434U (en) | 2014-05-27 | 2014-05-27 | Non-return switching mechanism of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203868434U true CN203868434U (en) | 2014-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420278619.4U Withdrawn - After Issue CN203868434U (en) | 2014-05-27 | 2014-05-27 | Non-return switching mechanism of valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN203868434U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982683A (en) * | 2014-05-27 | 2014-08-13 | 浙江博民机电股份有限公司 | Valve checking and switching mechanism |
-
2014
- 2014-05-27 CN CN201420278619.4U patent/CN203868434U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982683A (en) * | 2014-05-27 | 2014-08-13 | 浙江博民机电股份有限公司 | Valve checking and switching mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141008 Effective date of abandoning: 20170215 |
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| AV01 | Patent right actively abandoned |