CN110735932A - Connecting rod butterfly valve with connecting rod adjusting mechanism - Google Patents
Connecting rod butterfly valve with connecting rod adjusting mechanism Download PDFInfo
- Publication number
- CN110735932A CN110735932A CN201910956578.7A CN201910956578A CN110735932A CN 110735932 A CN110735932 A CN 110735932A CN 201910956578 A CN201910956578 A CN 201910956578A CN 110735932 A CN110735932 A CN 110735932A
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- Prior art keywords
- rod
- adjusting
- connecting rod
- valve
- auxiliary
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2268—Sealing means for the axis of rotation
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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/521—Mechanical actuating means with crank, eccentric, or cam comprising a pivoted disc or flap
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- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to connecting rod butterfly valves with connecting rod adjusting mechanisms, which comprises a valve body, a connecting rod structure, an adjusting structure, a sealing structure and a limiting structure, wherein the connecting rod structure comprises a crank, a valve plate seat frame, a connecting rod, a main adjusting rod, an auxiliary adjusting rod and a valve rod, the crank and the connecting rod are connected to the valve plate seat frame, the end of the main adjusting rod is connected to the valve rod, the end of the auxiliary adjusting rod is connected to the connecting rod, the adjusting structure comprises a pin shaft, a pin shaft sleeve, a main control rod, an auxiliary control rod and an adjusting nut, the inner ends of the main control rod and the auxiliary control rod are respectively hinged to the main adjusting rod and the auxiliary adjusting rod correspondingly, threads matched with the adjusting nut are processed in the middle section, axial scales are processed in the outer end of the main adjusting rod, the sealing structure is formed by a filling seat, a filling and a gland together, and the limiting structure is fixed on the adjusting nut through an end cover and a fixing piece.
Description
Technical Field
The invention relates to the technical field of control of valves , in particular to a connecting rod butterfly valve with a connecting rod adjusting mechanism.
Background
The connecting rod butterfly valve is regulating valves with simple structures, is mainly applied to petrochemical and metallurgical industries, has the working temperature of 500 ℃ and the sealing grade requirement of more than IV grade.
The connecting rod butterfly valve in the prior art comprises a valve body, a valve plate, a valve rod, a driving rod, a driven rod and a fixed rod, wherein the fixed rod is connected with the valve body through an adjusting rod, the end of the adjusting rod is connected with the fixed rod, the end penetrates through the valve body and is fixed and sealed through a cap nut and a sealing gasket, and the installation position can be adjusted through the adjusting rod.
However, in the use of the valve , the sealing failure is caused by the bearing wear, the link mechanism deformation and other factors, the prior art only solves the problem of correcting the radial deformation of the valve caused by the bearing wear and the valve rod deformation, but has the defect that the axial deformation and the deformation of the link mechanism cannot be corrected.
Disclosure of Invention
The invention aims to solve the technical problem that connecting rod butterfly valves with connecting rod adjusting mechanisms are provided in order to overcome the defects in the prior art, so that the problem of poor sealing caused by factors such as correction of production and installation errors, deformation of parts in the use process and the like is solved.
The invention solves the technical problem by adopting the technical scheme that connecting rod butterfly valves with connecting rod adjusting mechanisms comprise valve bodies, connecting rod mechanisms, adjusting structure sealing mechanisms and limiting mechanisms, and are characterized in that:
the connecting rod mechanism is provided with a valve plate seat frame arranged in the valve body, a valve rod arranged on the front side of the valve plate seat frame, a main adjusting rod and an auxiliary adjusting rod, wherein the valve plate seat frame is hinged with a crank and a connecting rod, the end of the main adjusting rod is connected on the valve rod, the end of the auxiliary adjusting rod is connected with the connecting rod through a pin shaft, and the middle parts of the main adjusting rod and the auxiliary adjusting rod are crossed and connected through the pin shaft;
the adjusting structure comprises a main control rod and an auxiliary control rod, wherein the inner end of the main control rod is hinged with the other end of the main adjusting rod, the inner end of the auxiliary control rod is hinged with the other end of the auxiliary adjusting rod, the outer ends of the main control rod and the auxiliary control rod extend out of the valve body and are marked with axial scales, and adjusting nuts are connected to the middle parts of the main control rod and the auxiliary control rod;
a sealing structure: the valve comprises a packing seat fixed on the wall of a valve body and a gland matched with the packing seat, wherein packing is filled between the gland and the packing seat;
limit structure: the end cover is fixedly connected with the end face of the packing seat, and a fixing piece for limiting the axial movement of the adjusting nut is inserted on the end cover;
the main control rod and the auxiliary control rod penetrate through the packing seat and extend out of the end cover, and the adjusting nut is located on the outer side of the end cover.
Specifically, the other ends of the main adjusting rod and the auxiliary adjusting rod are provided with sliding grooves, and pin shafts for connecting the main control rod and the auxiliary control rod are arranged in the sliding grooves.
The end cover on have the rectangular channel, the stationary blade outer end have with the end cover on the rectangular channel joint the rectangle piece, stationary blade inner has the semi-circular breach that the card goes into the adjusting nut post inslot.
The outer side of the adjusting nut is provided with a sleeve with an -body structure, circumferential scales of 0.1mm are marked on each grid of the outer edge of the sleeve, and the outer ends of a main control rod and an auxiliary control rod marked with axial scales extend out of the sleeve.
The packing seat is provided with an inner cavity, the gland is provided with a cylindrical part matched with the inner cavity, the packing is positioned between the inner wall of the inner cavity and the cylindrical part of the gland, and the packing is expanded graphite sealing packing capable of resisting the high temperature of 600 ℃.
The invention has the advantages that the invention can correct the poor sealing caused by various working conditions, compensate the displacement of the connecting rod mechanism caused by the abrasion of a bearing and the deformation of a valve rod by the integral movement of the main adjusting rod and the auxiliary adjusting rod, compensate the size change caused by the deformation of a crank, a valve plate seat frame and a connecting rod by changing the installation angle of the main adjusting rod and the auxiliary adjusting rod, change the installation position and the installation angle of the main adjusting rod and the auxiliary adjusting rod by adjusting the elongation of the main adjusting rod and the auxiliary adjusting rod, quantize the adjustment of the valve , realize better adjustment function on the error generated in the production and assembly process and the deformation generated in the use process and effectively reduce the maintenance cost.
Drawings
The invention is further illustrated in the following description with reference to the figures and examples.
Fig. 1 is a schematic three-dimensional structure of the present invention.
Fig. 2 is a partially enlarged schematic view at a in fig. 1.
Fig. 3 is a two-dimensional cross-sectional view of the present invention.
Fig. 4 is a relationship diagram of the link structure of the present invention.
In the figure: 1. a valve body; 2. a valve plate seat frame; 3. a connecting rod; 4. an auxiliary adjusting rod; 5. a main adjustment lever; 6. a main control lever; 7. a filler seat; 8. a gland; 9. an end cap; 10. adjusting the nut; 11. a fixing sheet; 12. packing 13, an auxiliary control rod; 14. a valve stem; 15. a crank.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings that illustrate only the basic structure of the invention and therefore show only the components that are relevant to the invention.
The kinds of connecting rod butterfly valves with connecting rod adjusting mechanisms shown in fig. 1 and fig. 2 comprise a valve body 1, a connecting rod mechanism, an adjusting structure sealing mechanism and a limiting mechanism.
The connecting rod mechanism is provided with a valve plate seat frame 2 arranged in a valve body 1, a valve rod 14 arranged on the front side of the valve plate seat frame 2, a main adjusting rod 5 and an auxiliary adjusting rod 6, wherein a crank 15 and a connecting rod 3 are hinged on the valve plate seat frame 2, the end of the main adjusting rod 5 is connected on the valve rod 14, the end of the auxiliary adjusting rod 4 is connected with the connecting rod 3 through a pin shaft, and the middle parts of the main adjusting rod 5 and the auxiliary adjusting rod 4 are crossed and connected through the pin shaft;
the adjusting structure comprises a main control rod 6 and an auxiliary control rod 13, wherein the inner end of the main control rod 6 is hinged with the other end of the main adjusting rod 5, the inner end of the auxiliary control rod 13 is hinged with the other end of the auxiliary adjusting rod 4, the outer ends of the main control rod 6 and the auxiliary control rod 13 extend out of the valve body 1 and are marked with axial scales, and each grid of the axial scales is 1 mm.
The middle parts of the main control rod 6 and the auxiliary control rod 13 are both connected with an adjusting nut 10 with the thread pitch of 2mm, the outer side of the adjusting nut 10 is provided with a sleeve with body structures, and the outer edge of the sleeve is marked with circumferential scales of 0.1mm in each grid.
The other ends of the main adjusting rod 5 and the auxiliary adjusting rod 4 are provided with sliding grooves, and pin shafts for connecting the main control rod 6 and the auxiliary control rod 13 are arranged in the sliding grooves.
A sealing structure: the high-temperature-resistant high-pressure-resistant sealing valve comprises a packing seat 7 and a gland 8 which are fixed on the wall of a valve body 1, wherein the packing seat 7 is provided with an inner cavity, the gland 8 is provided with a cylindrical part matched with the inner cavity, packing 12 is filled between the inner wall of the inner cavity and the cylindrical part of the gland 8, and the packing 12 is expanded graphite sealing packing capable of resisting the high temperature of 600 ℃.
Limit structure: the end cover 9 is fixedly connected with the end face of the packing seat 7, the adjusting nut 10 is positioned on the outer side of the end cover 9, and a fixing piece 11 for limiting the axial movement of the adjusting nut 10 is inserted in the end cover 9; end cover 9 on have a rectangular channel, the stationary blade 11 outer end have with the end cover 9 on the rectangular channel joint the rectangle piece, stationary blade 11 inner has the semicircular gap that the regulation nut 10 columnar order inslot was gone into to the card. After the adjustment is finished, the fixing piece 11, the end cover 9 and the packing seat 7 are fixedly connected through bolt connection so as to limit the axial movement of the adjusting nut 10.
The main control rod 6 and the auxiliary control rod 13 penetrate through an inner cavity of a cylindrical part of the gland 8 through the filler seat 7, extend out of the end cover 9 and then extend out through a sleeve inner hole of the adjusting nut 10, and the outer ends of the main control rod 6 and the auxiliary control rod 13 marked with axial scales extend out of the sleeve.
Table 1 below is a table for tuning look-up of the present invention, and the tuning parameters of the primary control lever 6 and the secondary control lever 13 can be determined by looking up the table below. The table generation main steps are as follows:
(1) as shown in fig. 3 and 4, a numerical constraint relationship of a distance DE from a connection position of the main adjusting rod 5 and the auxiliary adjusting rod 4 to a center of the valve rod 14, a distance L3 between axes of the main adjusting rod 6 and the auxiliary adjusting rod 13 on a symmetrical plane of the valve , a distance BE from a center of a connecting pin shaft of the main adjusting rod 5 and the auxiliary adjusting rod 4 to a center of a connecting pin shaft of the connecting rod 3 and the auxiliary adjusting rod 4, a distance L2 from an axis of the main adjusting rod 6 to an upper end surface of the valve on a symmetrical plane of the valve , a distance L1 from a center of the valve rod 14 to an upper end surface of the valve on a symmetrical plane of the valve , a distance X1 from a center of the valve rod 14 to a right inner wall of the valve on a symmetrical plane of the valve plate seat frame 2, a distance AC from the connecting rod 3 to a center hole of the crank 15, a length CD from center hole at both ends of the crank 15, a length AB from center hole at both ends of the connecting rod 3, a length s1 from the main adjusting rod 6 to the valve, a length.
AC＝BE sinα+DE sinβ (5)
CD-AB＝BE cosα-DE cosβ (6)
a1＝100-s1,a2＝100-s2 (7)
(where DE, L3, BE, L2 are known quantities in the design, L1, X1, AC, CD, AB are input quantities, a1 and a2 are output quantities.) substituting equations (1), (2), (3), (4), (7) into equations (5) and (6) yields a set of implicit equations for s1 and s2 for L1, X1, AC, CD, AB.
(2) The applicable ranges of the distance L1 from the center of the valve stem 14 of the symmetry plane of the valve to the upper end face of the valve and the distance X1 from the center of the valve stem 14 of the symmetry plane of the valve to the inner wall on the right side of the valve , the length AB between the center holes of the two ends of the connecting rod 3, the length CD between the center holes of the two ends of the crank 15, and the distance AC between the center holes of the connecting rod 3 and the crank 15 on the valve plate seat frame 2 are determined.
(3) According to the increasing sequence of the values of L1-L2, X1, CD-AB and AC, six tables with the parameters of L1-L2, X1, CD-AB, AC, a1 and a2 are established, as shown in the following Table 1.
As shown in FIG. 3 and referring to Table 1, firstly, the distance L1 between the center of the valve rod 14 and the upper end of the valve body 1, the distance L2 between the axis of the main control rod 6 and the upper end of the valve body 1, the distance X1 between the center of the valve rod 14 and the inner wall of the valve body 1, the length AB between the center holes of the two ends of the connecting rod 3, the length CD between the center holes of the two ends of the crank 15, and the distance AC between the center holes of the connecting rod 3 and the crank 15 on the valve plate seat frame 2 are measured according to the parameter sequence in Table 1 to correspond to the corresponding positions of each row, and finally, the adjustment scale a1 of the main control rod 6 and the adjustment scale a2 of the auxiliary control rod 13.
TABLE 1
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1, kinds of connecting rod butterfly valve with connecting rod guiding mechanism, including valve body (1), link mechanism, regulation structure sealing mechanism and stop gear, characterized by:
the connecting rod mechanism is provided with a valve plate seat frame (2) arranged in the valve body (1), a valve rod (14) arranged on the front side of the valve plate seat frame (2), a main adjusting rod (5) and an auxiliary adjusting rod (6), wherein the valve plate seat frame (2) is hinged with a crank (15) and a connecting rod (3), the end of the main adjusting rod (5) is connected to the valve rod (14), the end of the auxiliary adjusting rod (4) is connected with the connecting rod (3) through a pin shaft, and the middle parts of the main adjusting rod (5) and the auxiliary adjusting rod (4) are crossed and connected through the pin shaft;
the adjusting structure comprises a main control rod (6) and an auxiliary control rod (13), wherein the inner end of the main control rod (6) is hinged with the other end of the main adjusting rod (5), the inner end of the auxiliary control rod (13) is hinged with the other end of the auxiliary adjusting rod (4), the outer ends of the main control rod (6) and the auxiliary control rod (13) extend out of the valve body (1) and are marked with axial scales, and the middle parts of the main control rod (6) and the auxiliary control rod (13) are connected with adjusting nuts (10);
a sealing structure: the valve comprises a filler seat (7) fixed on the wall of a valve body (1) and a gland (8) matched with the filler seat (7) for installation, wherein filler (12) is filled between the gland (8) and the filler seat (7);
limit structure: the end cover (9) is fixedly connected with the end face of the filling seat (7), and a fixing piece (11) for limiting the axial movement of the adjusting nut (10) is inserted on the end cover (9);
the main control rod (6) and the auxiliary control rod (13) penetrate through the filler seat (7) and extend out of the end cover (9), and the adjusting nut (10) is located on the outer side of the end cover (9).
2. The connecting rod butterfly valve with the connecting rod adjusting mechanism according to claim 1, wherein the other ends of the main adjusting rod (5) and the auxiliary adjusting rod (4) are provided with sliding grooves, and pin shafts for connecting the main adjusting rod (6) and the auxiliary adjusting rod (13) are arranged in the sliding grooves.
3. The connecting rod butterfly valve with a connecting rod adjusting mechanism as claimed in claim 1, wherein: end cover (9) on have the rectangular channel, stationary blade (11) outer end have with end cover (9) on the rectangular channel joint the rectangular sheet, stationary blade (11) inner has the semicircular gap of card income adjusting nut (10) cylindrical groove.
4. The connecting rod butterfly valve with the connecting rod adjusting mechanism is characterized in that the outer side of the adjusting nut (10) is provided with a -body-structured sleeve, the outer edge of the sleeve is marked with circumferential scales of 0.1mm in each grid, and the outer ends of the main control rod (6) and the auxiliary control rod (13) marked with axial scales extend out of the sleeve.
5. The connecting rod butterfly valve with a connecting rod adjusting mechanism as claimed in claim 1, wherein: the packing seat (7) is provided with an inner cavity, the gland (8) is provided with a cylindrical part matched with the inner cavity, the packing (12) is positioned between the inner wall of the inner cavity and the cylindrical part of the gland (8), and the packing (12) is an expanded graphite sealing packing capable of resisting the high temperature of 600 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910956578.7A CN110735932B (en) | 2019-10-10 | 2019-10-10 | Connecting rod butterfly valve with connecting rod adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910956578.7A CN110735932B (en) | 2019-10-10 | 2019-10-10 | Connecting rod butterfly valve with connecting rod adjusting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110735932A true CN110735932A (en) | 2020-01-31 |
| CN110735932B CN110735932B (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910956578.7A Active CN110735932B (en) | 2019-10-10 | 2019-10-10 | Connecting rod butterfly valve with connecting rod adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110735932B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377666A (en) * | 2020-11-05 | 2021-02-19 | 韩瑞辰 | Easy-to-open valve body switch structure at hidden position |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205705A (en) * | 1978-06-30 | 1980-06-03 | Massey-Ferguson Inc. | Operating structure for a brake valve construction |
| CN2564806Y (en) * | 2002-08-09 | 2003-08-06 | 周旭 | Pushing force butterfly valve |
| CN1851688A (en) * | 2006-05-26 | 2006-10-25 | 上海大学 | Crankshaft non-circular grinding four-point rigidity forced deformation computing method |
| CN102287502A (en) * | 2011-07-29 | 2011-12-21 | 万向钱潮股份有限公司 | Routing with resource reservation (3-RRR) mechanism with linear motion stretching and retracting compensation function |
| CN103591308A (en) * | 2013-11-20 | 2014-02-19 | 天津市卡尔斯阀门有限公司 | Sealing structure of three-connection-rod butterfly valve corrugated pipe |
| CN107035872A (en) * | 2017-06-13 | 2017-08-11 | 石家庄三环阀门股份有限公司 | The bar-link drive of improved butterfly valve plate |
| CN207421346U (en) * | 2017-09-29 | 2018-05-29 | 池州市中智阀门科技有限公司 | A kind of link type cutoff butterfly valve |
| CN108150659A (en) * | 2018-02-12 | 2018-06-12 | 无锡智能自控工程股份有限公司 | Double leval jib elevated-temperature seal butterfly valve |
-
2019
- 2019-10-10 CN CN201910956578.7A patent/CN110735932B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205705A (en) * | 1978-06-30 | 1980-06-03 | Massey-Ferguson Inc. | Operating structure for a brake valve construction |
| CN2564806Y (en) * | 2002-08-09 | 2003-08-06 | 周旭 | Pushing force butterfly valve |
| CN1851688A (en) * | 2006-05-26 | 2006-10-25 | 上海大学 | Crankshaft non-circular grinding four-point rigidity forced deformation computing method |
| CN102287502A (en) * | 2011-07-29 | 2011-12-21 | 万向钱潮股份有限公司 | Routing with resource reservation (3-RRR) mechanism with linear motion stretching and retracting compensation function |
| CN103591308A (en) * | 2013-11-20 | 2014-02-19 | 天津市卡尔斯阀门有限公司 | Sealing structure of three-connection-rod butterfly valve corrugated pipe |
| CN107035872A (en) * | 2017-06-13 | 2017-08-11 | 石家庄三环阀门股份有限公司 | The bar-link drive of improved butterfly valve plate |
| CN207421346U (en) * | 2017-09-29 | 2018-05-29 | 池州市中智阀门科技有限公司 | A kind of link type cutoff butterfly valve |
| CN108150659A (en) * | 2018-02-12 | 2018-06-12 | 无锡智能自控工程股份有限公司 | Double leval jib elevated-temperature seal butterfly valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377666A (en) * | 2020-11-05 | 2021-02-19 | 韩瑞辰 | Easy-to-open valve body switch structure at hidden position |
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| Publication number | Publication date |
|---|---|
| CN110735932B (en) | 2021-05-04 |
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