CN201162834Y - Non-abrasion hard-sealing butterfly valve - Google Patents
Non-abrasion hard-sealing butterfly valve Download PDFInfo
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- CN201162834Y CN201162834Y CNU2007200979614U CN200720097961U CN201162834Y CN 201162834 Y CN201162834 Y CN 201162834Y CN U2007200979614 U CNU2007200979614 U CN U2007200979614U CN 200720097961 U CN200720097961 U CN 200720097961U CN 201162834 Y CN201162834 Y CN 201162834Y
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- valve
- rod
- sealing
- butterfly
- push rod
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Abstract
The utility model relates to a non-abrasion hard seal butterfly valve, comprising a valve body, a valve rod, a butterfly board and a valve seat. The non-abrasion hard seal butterfly valve is characterized in that the valve seat is a mobile valve seat axially moving along the inner wall of the valve body; one side of the valve body is provided with a lateral body; sealing rings are arranged between the valve seat and the valve body and between the valve seat and the lateral body; a sealing element is fastened on a butterfly board carrier; movable fit clearance is left between the medial and lateral surfaces of the valve seat and the valve body and the lateral body; a spring is arranged between the external side surface of the valve seat and the lateral body; the medial surface is connected with the valve rod through a push rod; the internal end surface of the lateral body is provided with a spring; the upper end and the lower end of the valve rod are respectively provided with a curved slot; the upper curved slot and the lower curved slot respectively consist of a skewed slot and a circular arc slot; the middle of the valve rod is further provided with a long keyway, and an upper sliding key and a lower sliding key which respectively fixedly connected with an upper connecting seat and a lower connecting seat; the upper connecting seat and the lower connecting seat are respectively fastened on the butterfly board; the push rod comprises an upper push rod and a lower push rod; one ends of upper push rod and the lower push rod are respectively provided with a roller; one end of the lower push rod is glidingly embedded in the lower curved slot, and the other end of the lower push rod is articulated with the internal end surface of the mobile valve seat; the upper push rod and the lower push rod are symmetrically arranged; a butterfly rotating axis and the plane of the sealing pair form a single eccentric structure.
Description
Technical field
The utility model relates to a kind of valve, and particularly a kind of non-abrasion hard-sealing butterfly valve, international Patent classificating number intend being Int.Cl.F16K1/22 (2006.01).
Background technique
Existing hard seal butterfly valve generally includes valve body, valve rod, butterfly plate and valve seat.The interior circle of valve seat and the cylindrical of Sealing constitute sealing pair.Under the valve closing state, rely on the radial compression of butterfly plate and the thrust of forward medium to make seal ring generation resiliently deformable, realize interference fit seal.Because structural reason during the butterfly valve opening and closing, always exists friction between sealing pair, the moment of opening/shutting valve is increased, and keying speed slows down, and inevitably frequent keying can cause the accelerated wear test of sealing surface, sealability descends, and finally causes valve (leakage) to damage.For this reason, someone has studied " a kind of no wearing and tearing butterfly valve " (referring to Chinese patent ZL200420010685.X), the built-in valve seat that matches with butterfly plate of its valve body, inside and outside end face at valve seat is provided with bath, during valve opening and closing, the effect of valve seat bath release outside, interior bath supercharging realizes the disengaging with butterfly plate down, opens and closes moment and reduces greatly, can realize the no abrasion between the sealing pair.But still there is following shortcoming in this butterfly valve: 1. the actual requirement of relevant with described bath structure precision is very high, processing difficulties, and significantly increased product cost; 2. described bath itself also needs sealing, and sealing effect is difficult to guarantee, influences or reduces its pressurising, pressure relief performance, and the sealing problem of butterfly valve does not thoroughly solve; 3. this valve driving can not adopt manually and powered version simultaneously, and applicable surface is narrow, uses inconvenient.
The model utility content
At the deficiencies in the prior art, the technical problem that the utility model quasi-solution is determined is: design a kind of non-abrasion hard-sealing butterfly valve.The valve seat of this butterfly valve can move axially along valve body, does not have friction between the sealing pair, and operational torque is low, and keying speed is fast, and percussion is little, long service life, and driving mode is various, and manufacturing process is simple, with low cost simultaneously.
The technological scheme that the utility model solve the technical problem is: design a kind of non-abrasion hard-sealing butterfly valve, this butterfly valve comprises valve body, valve rod, butterfly plate and valve seat, it is characterized in that described valve seat is for making the moving valve base of axially movable circular ring along valve interior wall, be arranged in the described valve body, and the formation sealing pair that matches with the Sealing that is installed in the butterfly plate edge; One side of described valve body is fixed with lateral body; Between described moving valve base and described valve body and the lateral body seal ring is installed all; On the butterfly plate frame, Sealing is sandwiched between butterfly plate frame and the Sealing pressing plate described Sealing use Sealing pressing plate by bolton, and its cylindrical exceeds the outward edge of butterfly plate frame; Leave mobile matching gap between the inside and outside side of described valve seat and described valve body and the lateral body, and between the exterior edge face of moving valve base and described lateral body spring is installed, the interior edge face of valve seat links to each other with valve rod by push rod; The interior edge face of described lateral body has spring eye, and spring is installed in the spring eye; The upper and lower end of described valve rod has upper curve groove and lower curve groove, described upper curve groove and lower curve groove are made of one section skewed slot and one section arc groove smooth connection perpendicular to the valve rod center line respectively separately, described valve rod middle part also has long keyway, being equipped with on the long keyway can be along the last feather key and the following feather key of its slippage, last feather key and following feather key are connected in respectively on upper connecting base and the lower connecting base, upper connecting base and lower connecting base respectively by bolton on butterfly plate; Described push rod comprises symmetrically arranged upper push-rod and lower push-rod, one end of upper push-rod and lower push-rod all is equipped with cylindrical roller, the end that described lower push-rod is equipped with cylindrical roller is embedded in the lower curve groove of described valve rod lower end, and can slide along the lower curve groove, the interior edge face of its other end and described moving valve base is hinged; Described upper push-rod and lower push-rod symmetry are installed in the upper curve groove of described valve rod upper end, and can slide along the upper curve groove; There is axially off-centre between the rotation axis of described butterfly plate and the sealing pair plane, is single eccentric structure.
Compared with prior art, the beneficial effect of the utility model butterfly valve is:
1. usefulness improves.The utility model butterfly valve is designed to traditional fixed valve seat improvement can be along the axially movable moving valve base of valve body center line, during valve opening, valve rod elder generation moving linearly, drive valve seat elder generation and disengagement of seal member by push rod, valve rod rotates then, by the effect of feather key and connecting base, open butterfly plate.This unique design has avoided butterfly plate to produce frictional force between the sealing pair when rotating, and when opening butterfly plate, the pressure medium on butterfly plate both sides has been laid down major part, so opening and closing moment reduces greatly, only be about 10% of general butterfly valve, can make the corresponding minimizing of drive unit, thereby reduce cost with actuator's model, save the energy, improved keying speed simultaneously.
2. the life-span prolongs.The utility model butterfly valve is when opening butterfly plate, because sealing surface is thrown off in advance, the pressure difference on butterfly plate both sides reduces, so flowing medium reduces the unlatching percussion of butterfly plate, the operation noise also reduces, so the shock resistance fatigue ruption ability of butterfly valve improves greatly, bring up to hundreds of thousands by present several thousand times the working life that can make valve.
3. applicability is wide.The driving mode of the utility model butterfly valve is various, can adopt electronic, manual, surge or pneumatic mode drives, very easy to use.
4. good airproof performance.During the utility model butterfly valve valve closing, valve rod promotes valve seat by push rod and presses to Sealing along the butterfly plate central axial direction, and the elastic force of spring is also auxiliary with sealing surface compact simultaneously, has guaranteed excellent sealing performance.
Description of drawings
Fig. 1 is a kind of embodiment's of the utility model butterfly valve an overall structure front-view schematic diagram;
Fig. 2 is the A-A generalized section among a kind of embodiment Fig. 1 of the utility model butterfly valve;
Fig. 3 is the local enlarged diagram in I place among a kind of embodiment Fig. 2 of the utility model butterfly valve;
Fig. 4 is the B-B generalized section among a kind of embodiment Fig. 1 of the utility model butterfly valve;
Fig. 5 is the local enlarged diagram in II place among a kind of embodiment Fig. 4 of the utility model butterfly valve;
Fig. 6 is the stem structure schematic rear view among a kind of embodiment Fig. 1 of the utility model butterfly valve;
Fig. 7 is the local enlarged diagram in III place among a kind of embodiment Fig. 6 of the utility model butterfly valve;
Fig. 8 is the C-C generalized section among a kind of embodiment Fig. 6 of the utility model butterfly valve.
Embodiment
Further narrate the utility model below in conjunction with embodiment and accompanying drawing thereof, but it does not limit claim of the present utility model.
A kind of non-abrasion hard-sealing butterfly valve of the utility model design is (hereinafter to be referred as butterfly valve, referring to Fig. 1-8) embodiment comprises valve body 5, valve rod 6, butterfly plate 17 and valve seat 19, it is characterized in that described valve seat 19 is for making the moving valve base 19 of axially movable circular ring along valve body 5 inwalls, be arranged in the described valve body 5, when moving axially, the sealing surface of moving valve base 19 is perpendicular to the central axis of butterfly plate 17, match with the Sealing 18 that is installed in butterfly plate 17 edges, constitute the sealing pair of butterfly valve; In a side of described valve body 5 by the fastening lateral body 13 that is equipped with of screw; Between described moving valve base 19 and described valve body 5 and the lateral body 13 seal ring 20 is installed all; Described Sealing 18 use Sealing pressing plates 17.2, can be easy for installation and removal on butterfly plate frame 17.1 by bolton, and Sealing 18 is sandwiched between butterfly plate frame 17.1 and the Sealing pressing plate 17.2, and its cylindrical exceeds the outward edge of butterfly plate frame 17.1; Leave mobile matching gap between the inside and outside side of described valve seat 19 and described valve body 5 and the lateral body 13, and between the exterior edge face of moving valve base 19 and described lateral body 13 spring 14 is installed, the interior edge face of valve seat 19 links to each other with valve rod 6 by push rod 15; The interior edge face of described lateral body 13 has spring eye 13.1, and spring 14 is installed in the spring eye 13.1; The upper and lower end of described valve rod 6 has curvilinear groove 10 (10.1 and 10.2), and the curvilinear groove of valve rod 6 upper ends is called upper curve groove (being labeled as 10.1 among Fig. 6-8), and the curvilinear groove of valve rod 6 lower ends is called lower curve groove (being labeled as 10.2 among Fig. 6-8); Described upper curve groove 10.1 goes up skewed slot 10.11 by one section and one section last arc groove 10.12 smooth connection perpendicular to valve rod 6 center lines is formed, lower curve groove 10.2 equally also is made of one section following skewed slot 10.21 and one section following arc groove 10.22 smooth connection perpendicular to valve rod 6 center lines, and the described center angle that goes up arc groove 10.12 and following arc groove 10.22 is 90 degree (referring to Fig. 6-8); Described valve rod 6 middle parts have long keyway 9, being equipped with on the long keyway 9 can be along the last feather key 8 and the following feather key 8 ' of its slippage, last feather key 8 and following feather key 8 ' are fixedly connected on respectively on upper connecting base 7 and the lower connecting base 7 ', upper connecting base 7 and lower connecting base 7 ' respectively by bolton on butterfly plate 17; Described push rod 15 comprises symmetrically arranged upper push-rod 15.1 and lower push-rod 15.2, one end of upper push-rod 15.1 and lower push-rod 15.2 all is equipped with cylindrical roller 22, the end that described lower push-rod 15.2 is equipped with cylindrical roller 22 is embedded in 10.2 li of the lower curve grooves of described valve rod 6 lower ends, and can slide (referring to Fig. 4,5) along lower curve groove 10.2, the interior edge face of its other end and described moving valve base 19 is hinged; Described upper push-rod 15.1 and lower push-rod 15.2 symmetries are installed in 10.1 li of the upper curve grooves of described valve rod 6 upper ends, and can slide along upper curve groove 10.1.Having axially off-centre between rotation axis of described butterfly plate 17 (being the valve rod center line) and the sealing pair plane, is the single eccentric structure of routine.
The further feature of the utility model is that the inner headed face of the moving valve base 19 of described circular ring is the normal cone face.Its manufacturing process is simple, and cost is low, reliable operation.The utility model is provided with seal ring 20 (shown in Fig. 2,3) at the faying surface of valve seat 19 and described valve body 5 and lateral body 13, described seal ring 20 comprises seal ring 20.1, seal ring 20.2 and the seal ring 20.3 of several groups of different sizes, when they can guarantee that valve seat 19 moves, butterfly valve had excellent sealing performance.Described Sealing 18 embodiments' periphery adopts and the identical normal cone face of described moving valve base 19 inner headed face cone angles.The structure of unique moving valve base 19 can realize that the nothing friction of sealing surface opens and closes, thereby has reduced the keying moment of butterfly valve greatly, in the working life of having improved butterfly valve, has improved keying speed simultaneously.
Leave mobile matching gap between the inner side surface of the inside and outside side of moving valve base 19 described in the utility model and the outer side surface of described valve body 5 and described lateral body 13, to guarantee that sealing surface can be thrown off and seal (shown in Fig. 2,3) fully at valve open with when closing;
The two ends, the left and right sides of valve body 5 described in the utility model are provided with the flange perpendicular to valve body 5 center lines, and the upper and lower end of valve body 5 all has upper valve rod hole and the lower valve rod hole that valve rod 6 passes, and the upper and lower side of described butterfly plate 17 respectively is provided with upper connecting base 7 and lower connecting base 7 '; Described valve rod 6 passes described upper valve rod hole, upper connecting base 7, lower connecting base 7 ' and lower valve rod hole successively from the top of valve body 5, use feather key 8 respectively between valve rod 6 and upper connecting base 7 and the lower connecting base 7 ' and circumferentially fixedly connected with following feather key 8 '; The lower valve rod outer end of hole of valve body 5 is provided with down pipe box 11, be installed with lower flange on it, lower flange is connected with the lower cover 12 of sealing with bolt, the upper valve rod outer end of hole of valve body 5 is provided with pipe box 4, be installed with upper flange on it, with bolt support 3 is installed on the upper flange, 3 are connected with drive unit 1 on the support, and drive unit 1 is provided with handwheel 21 (referring to Fig. 1).
The top of valve rod 6 described in the utility model is provided with the stuffing box that is enclosed in valve rod 6 outsides, and filler is housed in the stuffing box, and is provided with sleeve and the gland 2 (referring to Fig. 1) that is pressed on the filler.
There is certain distance between rotation axis of butterfly plate 17 described in the utility model (being valve rod 6 center lines) and the sealing pair plane (sealing surface and the vertical transverse section of valve body 5 central axis), this distance is called axial off-centre, make butterfly valve have single eccentric structure, its objective is to make described push rod 15 devices have certain operating space (referring to Fig. 1).
Butterfly plate 17 described in the utility model is provided with stiffening rib 16, to improve intensity, increases working life.
The working principle of the utility model butterfly valve is: during valve opening, valve rod 6 is under the effect of prior art structure (referring to Chinese patent CN00200523.9), upwards move earlier as straight line, push rod 15 moves down along curvilinear groove 10, and drive valve seat 19 along the butterfly plate central axial direction to left, spring 14 is compressed simultaneously, till the center line place planes overlapping of the arc groove of the central axis of cylindrical roller 22 and curvilinear groove 10, make valve seat 19 and Sealing 18 throw off a segment distance, the pressure of body cavity reduces greatly, valve rod 6 rotates again then, and by last, following feather key 8,8 ' with last, lower connecting base 7,7 ' effect, drive butterfly plate 17 and turn 90 degrees, make valve open at frictionless situation backspin.
During valve closing, valve rod 6 rotation, by upper and lower feather key 8,8 ' with upper and lower connecting base 7,7 ' effect, drive butterfly plate 17 counterrotating 90 under the frictionless situation and spend, exist certain distance between valve seat 19 and the Sealing 18 this moment, and both central axis are in and overlap the position; Valve rod 6 straight lines move down then, and push rod 15 moves up along curvilinear groove 10, and drive valve seat 19 along butterfly plate 17 central axial direction to right translation, press to Sealing 18, spring 14 also promotes valve seat 19 and moves right, and is compacted until valve seat 19 and Sealing 18, sealing surface seals fully, valve closing.
The utility model is not addressed part and is applicable to prior art.The different embodiments of using for reference the prior art generation simultaneously are embodiment of the present utility model.
Employed when the mounting point of described structure of the utility model butterfly valve or component or direction " on ", D score, " left side ", " right side ", " interior ", " outward " etc. are that the orientation with given accompanying drawing is a foundation, they only are in order to express easily, be used for distinguishing the relative position of each parts or direction, the orientation when not representing the utility model butterfly valve to use.
Claims (3)
1. non-abrasion hard-sealing butterfly valve, this butterfly valve comprises valve body, valve rod, butterfly plate and valve seat, it is characterized in that described valve seat is for making the moving valve base of axially movable circular ring along valve interior wall, be arranged in the described valve body, and the formation sealing pair that matches with the Sealing that is installed in the butterfly plate edge; One side of described valve body is fixed with lateral body; Between described moving valve base and described valve body and the lateral body seal ring is installed all; On the butterfly plate frame, Sealing is sandwiched between butterfly plate frame and the Sealing pressing plate described Sealing use Sealing pressing plate by bolton, and its cylindrical exceeds the outward edge of butterfly plate frame; Leave mobile matching gap between the inside and outside side of described valve seat and described valve body and the lateral body, and between the exterior edge face of moving valve base and described lateral body spring is installed, the interior edge face of valve seat links to each other with valve rod by push rod; The interior edge face of described lateral body has spring eye, and spring is installed in the spring eye; The upper and lower end of described valve rod has upper curve groove and lower curve groove, described upper curve groove and lower curve groove are made of one section skewed slot and one section arc groove smooth connection perpendicular to the valve rod center line respectively separately, described valve rod middle part also has long keyway, being equipped with on the long keyway can be along the last feather key and the following feather key of its slippage, last feather key and following feather key are connected in respectively on upper connecting base and the lower connecting base, upper connecting base and lower connecting base respectively by bolton on butterfly plate; Described push rod comprises symmetrically arranged upper push-rod and lower push-rod, one end of upper push-rod and lower push-rod all is equipped with cylindrical roller, the end that described lower push-rod is equipped with cylindrical roller is embedded in the lower curve groove of described valve rod lower end, and can slide along the lower curve groove, the interior edge face of its other end and described moving valve base is hinged; Described upper push-rod and lower push-rod symmetry are installed in the upper curve groove of described valve rod upper end, and can slide along the upper curve groove; There is axially off-centre between the rotation axis of described butterfly plate and the sealing pair plane, is single eccentric structure.
2. non-abrasion hard-sealing butterfly valve according to claim 1, the inner headed face that it is characterized in that the moving valve base of described circular ring is the normal cone face; The periphery of described Sealing is and the identical normal cone face of described moving valve base inner headed face cone angle.
3. non-abrasion hard-sealing butterfly valve according to claim 1 and 2 is characterized in that described butterfly plate is provided with stiffening rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200979614U CN201162834Y (en) | 2007-11-23 | 2007-11-23 | Non-abrasion hard-sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200979614U CN201162834Y (en) | 2007-11-23 | 2007-11-23 | Non-abrasion hard-sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201162834Y true CN201162834Y (en) | 2008-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200979614U Expired - Lifetime CN201162834Y (en) | 2007-11-23 | 2007-11-23 | Non-abrasion hard-sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201162834Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202202A (en) * | 2015-10-20 | 2015-12-30 | 洪元生 | Novel double-track butterfly valve |
| CN106678378A (en) * | 2017-03-27 | 2017-05-17 | 河北工业大学 | Intermittent drive non-abrasion hard sealed butterfly valve |
-
2007
- 2007-11-23 CN CNU2007200979614U patent/CN201162834Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202202A (en) * | 2015-10-20 | 2015-12-30 | 洪元生 | Novel double-track butterfly valve |
| CN106678378A (en) * | 2017-03-27 | 2017-05-17 | 河北工业大学 | Intermittent drive non-abrasion hard sealed butterfly valve |
| CN106678378B (en) * | 2017-03-27 | 2018-09-18 | 河北工业大学 | A kind of intermittent driving non-abrasion hard-sealing butterfly valve |
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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 |
Effective date of abandoning: 20071123 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |