CN104006173A - Bidirectional sealing type butterfly valve - Google Patents
Bidirectional sealing type butterfly valve Download PDFInfo
- Publication number
- CN104006173A CN104006173A CN201410052418.7A CN201410052418A CN104006173A CN 104006173 A CN104006173 A CN 104006173A CN 201410052418 A CN201410052418 A CN 201410052418A CN 104006173 A CN104006173 A CN 104006173A
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- China
- Prior art keywords
- valve
- plate
- valve body
- bellows
- butterfly
- 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.)
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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
- F16K1/226—Shaping or arrangements of the sealing
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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
- F16K1/222—Shaping of the valve member
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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
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
Abstract
The invention discloses a bidirectional sealing type butterfly valve and aims at providing a bidirectional sealing type butterfly valve capable of guaranteeing sealing effects and service life when a corrugated pipe suffers from an alternating load of reciprocating impact of a medium. The key points of the technical scheme is that the bidirectional sealing type butterfly valve comprises a valve body, a valve seat, a valve rod, an operating mechanism and a butterfly plate; the valve body comprises channel wall surfaces; a corrugated pipe for connecting is connected between the end face of the valve seat and an end face of an annular lug boss; the inner wall of the corrugated pipe is communicated with a valve body channel; the corrugated pipe comprises multiple surface plates and multiple arc-shaped plates; each arc-shaped plate is provided with an annular airbag which is coaxially arranged with the corrugated pipe; each annular airbag penetrates adjacent surface plates for communication; the valve body is provided with an air nozzle; the air nozzle penetrates the valve body to be communicated with the annular airbags; the channel wall surfaces at two sides of the valve rod are respectively a first channel and a second channel; the valve body is provided with pressure measuring instruments respectively used for detecting pressure fluctuation of the medium in the first channel and the second channel. The invention is applicable to the bidirectional sealing type butterfly valve.
Description
Technical field
The present invention relates to a kind of technical field of valve manufacturing, more particularly, it relates to a kind of bidirectional sealed butterfly valve.
Background technique
Traditional butterfly valve, its valve seat is substantially all for fixed, in use, when medium is reverse flow and this pressure medium when larger, pressure can push away and make butterfly plate have a displacement, thereby and between valve seat, form gap and cause leakage; Some butterfly valves adopt the means that increase valve rod warping force to address this problem, thereby strengthen butterfly plate in the tight power of closing Shi Qiyu outbreak, come successively to stop as much as possible medium to make butterfly plate displacement to the impact of butterfly plate, thereby to guarantee the sealability of valve,, there is defect in this means, can make valve require great effort very much when opening and closing, thereby affect the convenience of valve operation.
Therefore, application number is that 200910096151.0 Chinese patent discloses a kind of butterfly valve featuring two-way metallic seal of bellows, it comprises valve body, valve seat, butterfly plate, the valve rod being connected with butterfly plate and with the operating device of ovable valve stem rotation, the axial seal working surface of described butterfly plate is cone inclined-plane, the working surface of described valve seat is inclined-plane, between the outer circumferential side of described valve seat and the vias inner walls of valve body, form gap and form floated structure, in the vias inner walls of valve body, be still provided with annular boss, between the end face of described valve seat and the end face of annular boss, by bellows, be connected, gap between the valve channel inwall of the skin of this bellows and valve seat communicates, the inwall of this bellows communicates with valve channel, on the inwall of described valve body and the opposite side with respect to bellows that is positioned at valve seat be also provided with a positioning plate, this positioning plate and valve seat are separated by a distance.
Although that this butterfly valve featuring two-way metallic seal of bellows operates is light, sealing reliable, but, because bellows exists working life limited, but also relevant with the fatigue characteristic of selected material, particularly when described butterfly valve is used in the situation that medium constantly carrys out repercussion, make corrugated plate bear alternate load always, thereby greatly reduce the working life of bellows, finally affect sealing effect and the working life of butterfly valve.
Summary of the invention
The deficiency existing for prior art, the object of the present invention is to provide a kind of bidirectional sealed butterfly valve, can bear in the alternate load situation of carrying out repercussion of medium at bellows, guarantees sealing effect and working life.
For achieving the above object, the invention provides following technological scheme: a kind of bidirectional sealed butterfly valve, comprise valve body, valve seat, valve rod, operating device and butterfly plate, described valve body comprises channel wall, described butterfly plate and valve rod are connected, operating device drives described valve rod rotation, the circumferential seal working surface of described butterfly plate is cone inclined-plane, the sphenoid surface that the working surface of valve seat offsets for the axial seal working surface with butterfly plate, on the channel wall of described valve body, be also provided with annular boss, between the outer circumferential side of described valve seat and the channel wall of valve body, be provided with gap, between the end face of described valve seat and the end face of annular boss, be connected with bellows, the inwall of described bellows communicates with valve channel,
Described bellows comprises some surface plates and some arc plates, one side of described each surface plate is equipped with the annular air-pocket with the coaxial setting of bellows, described each adjacent annular air-pocket is through surface plate conducting, and described valve body is provided with valve, and described valve connects annular air-pocket through valve body conducting;
The channel wall of described valve rod both sides is respectively first passage and second channel, and described valve body is provided with the pressure measuring instruments that is respectively used to detect pressure medium fluctuation in first passage and second channel.
By adopting technique scheme, in a side of described each surface plate, be equipped with the annular air-pocket with the coaxial setting of bellows, coordinate two pressure measuring instruments that are respectively used to detect pressure medium fluctuation in first passage and second channel simultaneously, can be by the described pressure measuring instruments of monitoring, whether the medium of judging in channel wall is fluctuating back and forth, when the medium in channel wall causes alternate load to described corrugated sheet, convenient for being arranged on outside gas-filled pump, by valve, annular air-pocket is inflated, utilize annular air-pocket to fill the space between adjacent two surface plates of described bellows, make bellows in one and half extension states, thereby avoid described bellows significantly to stretch always, contractile motion, in short time, reduce a large amount of working life.
The present invention is further set to: described each adjacent surface plate homogeneous one correspondence is fixedly connected with annular air-pocket, and on described bellows, each annular air-pocket is all located at the same side of each surface plate.
By adopting technique scheme, the same side that described each adjacent surface plate homogeneous one correspondence is fixedly connected with annular air-pocket and is located at surface plate, can guarantee the structural compactness of described bellows, simultaneously, prevent that annular air-pocket from occur floating because of medium, the effect of losing the job.
The present invention is further set to: described arc plate is divided into some slabs and some thin plates, and described each slab and thin plate all arrange along the axial direction interval of bellows.
By adopting technique scheme; described arc plate is divided into slab and thin plate and arranges along the axial direction interval of bellows; because thick plate structure intensity is high, bearing load amount is large; and the active force that thin plate stretching needs is little; therefore; described setting can be simultaneously in conjunction with the advantage of slab and thin plate; improve the using effect of described bellows; at pressure medium hour; can utilize the extension of thin plate to stretch; utilize slab protection bellows simultaneously, be unlikely to thin plate run into tired in described in bellows lose using effect.
The present invention is further set to: between described valve seat and valve body, be provided with circular elastic ring, described elastic ring is provided with some through holes for medium circulation.
By adopting technique scheme, between described valve seat and valve body, be provided with circular elastic ring, can utilize the elasticity of the described elastic ring valve seat of conflicting, reduce described valve seat fluctuates back and forth because of medium, impact, related bellows, make described bellows bear radial load, thereby cause decline the working life of bellows; In addition, on the end face of described elastic ring, be provided with some through holes for medium circulation, guarantee the normal use of described butterfly valve dual sealing mechanism.
The present invention is further set to: on the outer peripheral surface of described butterfly plate, be embedded with seal ring, described seal ring comprises some 304 corrosion resistant plates and some flexible graphite plates, and described each flexible graphite plate and each 304 corrosion resistant plate are staggered and form soft and hard seal inserts; Described seal ring is tight against the inner peripheral surface of valve seat, and the angle that the outer peripheral surface of described seal ring and butterfly plate axis line form is less than and the outer peripheral surface of butterfly plate and the angle of self axis formation.
By adopting technique scheme, on the outer peripheral surface of described butterfly plate, be embedded the soft and hard seal inserts being formed by 304 corrosion resistant plates and flexible graphite plate, can have 304 stainless steel materials and Expanded graphite characteristic separately concurrently, improve the sealing between described butterfly plate and valve seat; And, the angle that the outer peripheral surface of described seal ring and butterfly plate axis line form is less than and the outer peripheral surface of butterfly plate and the angle of self axis formation, can wear and tear at the working surface of described seal ring, when slope reduces gradually, sealing between assurance and valve seat, in addition, because two working surface angles of inclination of valve seat and seal ring are different, the relation of line contact sealing can make the keying of described butterfly plate more laborsaving in the situation that not reducing sealing effect.
The present invention is further set to: described channel wall is provided with positioning plate, and described positioning plate is positioned at valve seat with respect to the opposite side of bellows; Described positioning plate be coated with Expanded graphite.
By adopting technique scheme, thereby positioning plate is set can be avoided described bellows excessively to stretch causing valve seat over-travel, thereby when guaranteeing valve event, can prevent that bellows hyper-extended from occurring tired, further guarantee the working life of described bellows; In addition, on the surface of described positioning plate, comprise Expanded graphite, protection positioning plate is not subject to the erosion of Korrosionsmedium, and improves the resistance to pressure of positioning plate.
The present invention is further set to: the outer peripheral surface of described butterfly plate is arc shaped surface.
By adopting technique scheme, the outer peripheral surface of described butterfly plate is arranged to arc shaped surface, can utilize the structure of arc, both guaranteed the sealing effect of butterfly valve, can further facilitate again the keying of butterfly plate, reduce the friction that butterfly plate causes in opening-closing process.
Accompanying drawing explanation
Fig. 1 is bidirectional sealed butterfly valve embodiment's of the present invention structural representation;
Fig. 2 is the A place enlarged view in Fig. 1.
Reference character: 1, valve body; 11, channel wall; 12, positioning plate; 2, valve seat; 3, valve rod; 4, operating device; 5, butterfly plate; 51, seal ring; 6, annular boss; 7, bellows; 71, surface plate; 72, arc plate; 721, thin plate; 722, slab; 8, annular air-pocket; 81, valve; 9, pressure measuring instruments; 10, elastic ring; 101, through hole.
Embodiment
Referring to figs. 1 through Fig. 2, bidirectional sealed butterfly valve embodiment of the present invention is described further.
As shown in Figure 1 to Figure 2, a kind of bidirectional sealed butterfly valve, comprise valve body 1, valve seat 2, valve rod 3, operating device 4 and butterfly plate 5, described valve body 1 comprises channel wall 11, described butterfly plate 5 is connected with valve rod 3, operating device 4 drives described valve rod 3 rotations, the circumferential seal working surface of described butterfly plate 5 is cone inclined-plane, the sphenoid surface that the working surface of valve seat 2 offsets for the axial seal working surface with butterfly plate 5, on the channel wall 11 of described valve body 1, be also provided with annular boss 6, between the channel wall 11 of the outer circumferential side of described valve seat 2 and valve body 1, be provided with gap, between the end face of the end face of described valve seat 2 and annular boss 6, being connected with bellows 7 is connected, the inwall of described bellows 7 communicates with valve body 1 passage,
Described bellows 7 comprises some surface plates 71 and some arc plates 72, one side of described each surface plate 71 is equipped with the annular air-pocket 8 with the coaxial setting of bellows 7, described each adjacent annular air-pocket 8 is through surface plate 71 conductings, described valve body 1 is provided with valve 81, and described valve 81 connects annular air-pocket 8 through valve body 1 conducting;
The channel wall 11 of described valve rod 3 both sides is respectively first passage and second channel, and described valve body 1 is provided with the pressure measuring instruments 9 that is respectively used to detect pressure medium fluctuation in first passage and second channel.
In a side of described each surface plate 71, be equipped with the annular air-pocket 8 with the coaxial setting of bellows 7, coordinate two pressure measuring instruments 9 that are respectively used to detect pressure medium fluctuation in first passage and second channel simultaneously, can be by the described pressure measuring instruments 9 of monitoring, whether the medium of judging in channel wall 11 is fluctuating back and forth, when the medium in channel wall 11 causes alternate load to described corrugated sheet, convenient for being arranged on outside gas-filled pump, by 8 inflations of 81 pairs of annular air-pockets of valve, the space that utilizes annular air-pocket 8 to fill between adjacent two surface plates 71 of described bellows 7, make bellows 7 in one and half extension states, thereby avoid described bellows 7 to do significantly to stretch always, contractile motion, in short time, reduce a large amount of working life (it should be noted that herein, annular air-pocket 8 is set, can also prevent that the impurity in medium from piling up in the depression position of described bellows 7, in addition, single-chip microcomputer can also be set, utilize the interior pressure medium of the automatic sense channel wall 11 of program and detection device fluctuation situation, automatic inflating and regulate aeration quantity according to the pressure condition of medium, the present embodiment to gas-filled pump etc. so external equipment repeat no more).
Described each adjacent surface plate 71 homogeneous one correspondences are fixedly connected with annular air-pocket 8, and on described bellows 7, each annular air-pocket 8 is all located at the same side of each surface plate 71.
The same side that described each adjacent surface plate 71 homogeneous one correspondences are fixedly connected with annular air-pocket 8 and are located at surface plate 71, can guarantee the structural compactness of described bellows 7, meanwhile, prevents that annular air-pocket 8 from occurring to float because of medium, the effect of losing the job.
Described arc plate 72 is divided into some slabs 722 and some thin plates 721, and described each slab 722 all arranges along the axial direction interval of bellows 7 with thin plate 721.
Described arc plate 72 is divided into slab 722 and thin plate 721 and arranges along the axial direction interval of bellows 7; because slab 722 structural strengths are high, bearing load amount is large; and the active force that thin plate 721 stretchings need is little; therefore; described setting is the advantage with thin plate 721 in conjunction with slab 722 simultaneously; improve the using effect of described bellows 7; at pressure medium hour; can utilize the extension of thin plate 721 to stretch; utilize slab 722 protection bellowss 7 simultaneously, be unlikely to thin plate 721 run into tired in described in bellows 7 lose using effect.
Between described valve seat 2 and valve body 1, be provided with circular elastic ring 10, described elastic ring 10 is provided with some through holes 101 for medium circulation.
Between described valve seat 2 and valve body 1, be provided with circular elastic ring 10, can utilize the elasticity of described elastic ring 10 valve seat 2 of conflicting, reduce described valve seat 2 that because of medium, fluctuate back and forth, impact, related bellows 7, make described bellows 7 bear radial load, thereby cause decline the working life of bellows 7; In addition, on the end face of described elastic ring 10, be provided with some through holes 101 for medium circulation, guarantee the normal use of described butterfly valve dual sealing mechanism.
On the outer peripheral surface of described butterfly plate 5, be embedded with seal ring 51, described seal ring 51 comprises some 304 corrosion resistant plates and some flexible graphite plates, and described each flexible graphite plate and each 304 corrosion resistant plate are staggered and form soft and hard seal inserts; Described seal ring 51 is tight against the inner peripheral surface of valve seat 2, and the angle that the outer peripheral surface of described seal ring 51 and butterfly plate 5 axis form is less than and the outer peripheral surface of butterfly plate 5 and the angle of self axis formation.
On the outer peripheral surface of described butterfly plate 5, be embedded the soft and hard seal inserts being formed by 304 corrosion resistant plates and flexible graphite plate, can have 304 stainless steel materials and Expanded graphite characteristic separately concurrently, improve the sealing between described butterfly plate 5 and valve seat 2; And, the angle that the outer peripheral surface of described seal ring 51 and butterfly plate 5 axis form is less than and the outer peripheral surface of butterfly plate 5 and the angle of self axis formation, can wear and tear at the working surface of described seal ring 51, when slope reduces gradually, sealing between assurance and valve seat 2, in addition, because 51 two working surface angles of inclination of valve seat 2 and seal ring are different, the relation of line contact sealing can make the keying of described butterfly plate 5 more laborsaving in the situation that not reducing sealing effect.
Described channel wall 11 is provided with positioning plate 12, and described positioning plate 12 is positioned at valve seat 2 with respect to the opposite side of bellows 7; Described positioning plate 12 be coated with Expanded graphite.
Thereby positioning plate 12 is set, can avoid described bellows 7 excessively to stretch causing valve seat 2 over-travel, thereby when guaranteeing valve event, can prevent that bellows 7 hyper-extended from occurring tired, further guarantee the working life of described bellows 7; In addition, on the surface of described positioning plate 12, comprise Expanded graphite, protection positioning plate 12 is not subject to the erosion of Korrosionsmedium, and improves the resistance to pressure of positioning plate 12.
The outer peripheral surface of described butterfly plate 5 is arc shaped surface.
The outer peripheral surface of described butterfly plate 5 is arranged to arc shaped surface, can utilizes the structure of arc, both guaranteed the sealing effect of butterfly valve, can further facilitate again the keying of butterfly plate 5, reduce the friction that butterfly plate 5 causes in opening-closing process.
The above makes the preferred embodiment of the present invention, does not depart from for the person of ordinary skill of the art under the prerequisite of the principle of the invention, can also make some modification and improvement, and these also should be considered as protection scope of the present invention.
Claims (7)
1. a bidirectional sealed butterfly valve, comprise valve body, valve seat, valve rod, operating device and butterfly plate, described valve body comprises channel wall, described butterfly plate and valve rod are connected, operating device drives described valve rod rotation, the circumferential seal working surface of described butterfly plate is cone inclined-plane, the sphenoid surface that the working surface of valve seat offsets for the axial seal working surface with butterfly plate, on the channel wall of described valve body, be also provided with annular boss, between the outer circumferential side of described valve seat and the channel wall of valve body, be provided with gap, between the end face of described valve seat and the end face of annular boss, be connected with bellows, the inwall of described bellows communicates with valve channel, it is characterized in that:
Described bellows comprises some surface plates and some arc plates, one side of described each surface plate is equipped with the annular air-pocket with the coaxial setting of bellows, described each adjacent annular air-pocket is through surface plate conducting, and described valve body is provided with valve, and described valve connects annular air-pocket through valve body conducting;
The channel wall of described valve rod both sides is respectively first passage and second channel, and described valve body is provided with the pressure measuring instruments that is respectively used to detect pressure medium fluctuation in first passage and second channel.
2. bidirectional sealed butterfly valve according to claim 1, is characterized in that: described each adjacent surface plate homogeneous one correspondence is fixedly connected with annular air-pocket, and on described bellows, each annular air-pocket is all located at the same side of each surface plate.
3. bidirectional sealed butterfly valve according to claim 1 and 2, is characterized in that: described arc plate is divided into some slabs and some thin plates, and described each slab and thin plate all arrange along the axial direction interval of bellows.
4. bidirectional sealed butterfly valve according to claim 3, is characterized in that: between described valve seat and valve body, be provided with circular elastic ring, described elastic ring is provided with some through holes for medium circulation.
5. bidirectional sealed butterfly valve according to claim 4, it is characterized in that: on the outer peripheral surface of described butterfly plate, be embedded with seal ring, described seal ring comprises some 304 corrosion resistant plates and some flexible graphite plates, and described each flexible graphite plate and each 304 corrosion resistant plate are staggered and form soft and hard seal inserts; Described seal ring is tight against the inner peripheral surface of valve seat, and the angle that the outer peripheral surface of described seal ring and butterfly plate axis line form is less than and the outer peripheral surface of butterfly plate and the angle of self axis formation.
6. bidirectional sealed butterfly valve according to claim 5, is characterized in that: described channel wall is provided with positioning plate, and described positioning plate is positioned at valve seat with respect to the opposite side of bellows; Described positioning plate be coated with Expanded graphite.
7. bidirectional sealed butterfly valve according to claim 6, is characterized in that: the outer peripheral surface of described butterfly plate is arc shaped surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052418.7A CN104006173B (en) | 2014-02-17 | 2014-02-17 | Bidirectional sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052418.7A CN104006173B (en) | 2014-02-17 | 2014-02-17 | Bidirectional sealed butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104006173A true CN104006173A (en) | 2014-08-27 |
| CN104006173B CN104006173B (en) | 2016-06-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410052418.7A Expired - Fee Related CN104006173B (en) | 2014-02-17 | 2014-02-17 | Bidirectional sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104006173B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508634A (en) * | 2016-01-18 | 2016-04-20 | 株洲南方阀门股份有限公司 | Two-way metal hard-sealed butterfly valve |
| CN106439054A (en) * | 2016-09-19 | 2017-02-22 | 成都测迪森生物科技有限公司 | Combined valve seat |
| CN110566678A (en) * | 2019-08-23 | 2019-12-13 | 江苏盐电阀门有限公司 | Soft sealing butterfly valve with triangular ring structure |
| CN111043331A (en) * | 2019-12-17 | 2020-04-21 | 孔仕华 | Prevent integration valve of leakage |
| CN112921235A (en) * | 2020-12-25 | 2021-06-08 | 张家港市鸿源机械锻造有限公司 | Low-temperature-resistant corrosion-resistant high-strength valve for deep sea and manufacturing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508634A (en) * | 2016-01-18 | 2016-04-20 | 株洲南方阀门股份有限公司 | Two-way metal hard-sealed butterfly valve |
| CN106439054A (en) * | 2016-09-19 | 2017-02-22 | 成都测迪森生物科技有限公司 | Combined valve seat |
| CN110566678A (en) * | 2019-08-23 | 2019-12-13 | 江苏盐电阀门有限公司 | Soft sealing butterfly valve with triangular ring structure |
| CN110566678B (en) * | 2019-08-23 | 2021-02-02 | 江苏盐电阀门有限公司 | Soft sealing butterfly valve with triangular ring structure |
| CN111043331A (en) * | 2019-12-17 | 2020-04-21 | 孔仕华 | Prevent integration valve of leakage |
| CN112921235A (en) * | 2020-12-25 | 2021-06-08 | 张家港市鸿源机械锻造有限公司 | Low-temperature-resistant corrosion-resistant high-strength valve for deep sea and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104006173B (en) | 2016-06-29 |
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