CN208793653U - Tool prevents the three-eccentric-butterfly-valve of the sagging function of butterfly plate - Google Patents
Tool prevents the three-eccentric-butterfly-valve of the sagging function of butterfly plate Download PDFInfo
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- CN208793653U CN208793653U CN201821641484.8U CN201821641484U CN208793653U CN 208793653 U CN208793653 U CN 208793653U CN 201821641484 U CN201821641484 U CN 201821641484U CN 208793653 U CN208793653 U CN 208793653U
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- valve
- butterfly
- butterfly plate
- valve rod
- valve body
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Abstract
The utility model relates to have the three-eccentric-butterfly-valve for preventing the sagging function of butterfly plate, including passing through valve rod vertically and being rotatably arranged in the butterfly plate on valve body, it is separately installed with retaining ring outside valve rod between valve body and butterfly plate upper and lower side, one end of retaining ring is connected on valve body and the other end is connected on butterfly plate；Valve body bottom end, which corresponds at the position of lower shaft hole, is equipped with end cap by fastener, is coaxially installed with tapered roller thrust bearing between end cap and valve rod bottom end.The utility model supports butterfly plate by retaining ring, play the role of the first layer for preventing butterfly plate sagging, the second layer for preventing butterfly plate sagging is played the role of by the mating reaction of tapered roller thrust bearing and valve rod bottom end again again, so that butterfly plate is not let droop in conjunction with retaining ring and tapered roller thrust bearing and valve seal is caused to fail, after retaining ring abrasion good supporting role can be kept using tapered roller thrust bearing, significant effect can achieve 1,000,000 service lifes.
Description
Technical field
The utility model relates to butterfly valve technical fields, more particularly to a kind of three eccentricity butterfly for having and preventing the sagging function of butterfly plate
Valve.
Background technique
Disk center and body central are deviateed in valve rod axle center simultaneously, and valve seat axis of rotation and valve channel axis have centainly
Angle, referred to as three-eccentric-butterfly-valve.Three-eccentric-butterfly-valve is widely used in the metallurgy, electric power, petroleum of medium temperature≤425 DEG C
On the industrial pipelines such as work and plumbing and urban construction, makes adjustments flow and carry cutout body use.
The construction of three-eccentric-butterfly-valve generally comprises valve rod, butterfly plate and valve body, and butterfly plate is fixedly connected simultaneously by pin with valve rod
In the fluid channel of valve body, drives butterfly valve positive and negative by the rotation of valve rod then realize the effect for adjusting flow and carrying cutout body
Fruit, and since butterfly plate itself has certain weight, will appear during the butterfly switch of high-frequency high-speed it is sagging after abrasion and
Valve seal is caused to fail.
Utility model content
In order to overcome the technical defects existing in the prior art, the utility model provides it is a kind of prevent the sagging function of butterfly plate three partially
Heart butterfly valve.
The technical solution that the utility model uses is:
Tool prevents the three-eccentric-butterfly-valve of the sagging function of butterfly plate, including vertically and is rotatably arranged on valve body by valve rod
Butterfly plate, the top of the valve rod is arranged in the upper shaft hole of top end of the valve body, and the bottom end of the valve rod is arranged in valve body bottom end
In lower shaft hole, it is separately installed with retaining ring outside the valve rod between the valve body and butterfly plate upper and lower side, one end of the retaining ring is connected to
On valve body and the other end is connected on butterfly plate；The valve body bottom end, which corresponds at the position of lower shaft hole, is equipped with end by fastener
Lid, is coaxially installed with tapered roller thrust bearing between the end cap and valve rod bottom end.
Preferably, the valve body with mounting groove compatible with retaining ring is offered at retaining ring opposite position.
Preferably, the butterfly plate includes the mounting post for being integrally attached to one side, and the mounting post is interior axially through setting
There is perforation, the valve rod is axially arranged in perforation and is connected by carving pin with the mounting post of butterfly plate, one end of the retaining ring
It is connected in mounting post.
Preferably, it is additionally provided with Upper shaft sleeve between the upper shaft hole and valve rod, is also set up between the lower shaft hole and valve rod
There is Lower shaft sleeve.
Preferably, the supported underneath of the tapered roller thrust bearing is combined with support plate, and the lower section of the support plate is logical
Screw is overregulated to be packed in above end cap.
The utility model has the beneficial effects that the utility model is installed respectively outside the valve rod between valve body and butterfly plate upper and lower side
There is retaining ring, be coaxially installed with tapered roller thrust bearing between end cap and valve rod bottom end, butterfly plate is supported by retaining ring, plays anti-
The only sagging first layer effect of butterfly plate, then played again by the mating reaction of tapered roller thrust bearing and valve rod bottom end and prevent butterfly
The sagging second layer effect of plate, makes butterfly plate not let droop and valve seal is caused to lose in conjunction with retaining ring and tapered roller thrust bearing
Effect can keep good supporting role, significant effect, Ke Yida using tapered roller thrust bearing after retaining ring abrasion
To 1,000,000 service lifes.
Detailed description of the invention
Fig. 1 is the utility model three-eccentric-butterfly-valve structural schematic diagram (driving device is not shown).
Fig. 2 is the cross-sectional view of Fig. 1.
Fig. 3 is A partial enlarged view shown in Fig. 2.
Fig. 4 is the utility model seal receptacle cross-sectional view.
Fig. 5 is P partial enlarged view shown in Fig. 4.
Fig. 6 is B partial enlarged view shown in Fig. 2.
Fig. 7 is C partial enlarged view shown in Fig. 2.
Fig. 8 is the utility model stuffing seal preferred exemplary construction schematic diagram.
Fig. 9 is Q partial enlarged view shown in fig. 8.
Figure 10 is the pneumatic three-eccentric-butterfly-valve main view of the utility model.
Figure 11 is the pneumatic three-eccentric-butterfly-valve structural schematic diagram of the utility model.
Figure 12 is that the utility model concentrates plate and vibration-absorbing pad structure schematic diagram.
Description of symbols:
10, valve body；11, first annular terrace；12, the second annular terrace；13, Upper shaft sleeve；14, Lower shaft sleeve；15, end cap；
20, butterfly plate；30, valve rod；40, annular insert；41, press circle；42, clamping groove；43, support slot；50, seal receptacle；51, base is sealed
Portion；52, clamping portion；53, variant part；54, top pressures groove；520, it is clamped piece；530, support chip；531, the first scalene cone；532,
Two scalene cones；533, transition face；534, supporting surface；61, retaining ring；62, tapered roller thrust bearing；63, support plate；64, it adjusts
Screw；70, filler assembly；71, ring is lubricated；72, soft graphite adds carbon fiber filler ring；73, braided packing ring；74, stone is expanded
Black packing ring；80, binder component；81, fusiform briquetting；82, pressure cylinder；83, pressing plate；84, pressing sleeve；85, second spring；86, it adjusts
Screw rod；87, adjustment block；88, the first spring；840, pressing ring；841, supporting block；90, double-acting cylinder；91, solenoid valve；92, gas
Control valve；93, filtering pressure reducing valve；94, plate is concentrated；95, resilient cushion；951, nitrile rubber bottom plate；952, nylon lower plate；953, hollow
Shock-absorbing ball；954, nylon upper plate；955, damping spring；956, shock structure.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
As shown, the present embodiment provides a kind of three-eccentric-butterfly-valve, main component is valve body 10, valve rod 30 and butterfly plate 20,
Perforation is provided with the access way for flow of media in the middle part of the valve body 10, and the butterfly plate 20 is arranged in access way and and valve
The eccentric connection of bar 30, the butterfly plate 20 is vertical by valve rod 30 and is rotatably arranged on valve body 10, the valve rod 30 it is upper
Lower end passes through axle sleeve respectively and is installed on valve body 10, and the upper end of the valve rod 30 protrudes upward with respect to valve body 10 and fills with driving
Transmission connection is set, the driving device preferably uses double-acting cylinder or rotating handle.Between 30 upper end of valve rod and driving device
Connection structure be conventional configurations, details are not described herein.
As shown in figs. 10-11, for double-acting cylinder butterfly valve, to meet 20 Fast transforms side of cylinder operation and butterfly plate
It to requiring, generally requires and uses gas control accessory, the gas control accessory includes solenoid valve 91, Pneumatic valve 92, filtering pressure reducing valve 93, often
The way of rule is that these gas control accessories are vacantly installed, and sharp pounding can be caused during the butterfly switch of high-frequency high-speed and is caused
These gas control accessories often damage.For this purpose, the present embodiment is equipped with a concentration plate 94, the gas control at the top of double-acting cylinder 90
Accessory is installed concentratedly on the concentration plate 94, and is concentrated and be equipped with resilient cushion 95, the electricity between plate 94 and double-acting cylinder 90
Magnet valve 91, Pneumatic valve 92 and filtering pressure reducing valve 93 are packed in by thrust washer and fastening nut concentrate on plate 94 respectively, described
Shock-absorbing type connecting tube is respectively adopted in each connector of solenoid valve 91, Pneumatic valve 92 and filtering pressure reducing valve 93, so can reach for a long time
High-frequency operation is unaffected.
As a kind of preferred embodiment of the present embodiment resilient cushion 95, as shown in figure 12, the resilient cushion 95 include from it is lower toward
On stack gradually nitrile rubber bottom plate 951, nylon lower plate 952, hollow shock-absorbing ball 953 and the nylon upper plate 954 of connection, the fourth
Nitrile rubber bottom plate 951 is fixed at 90 top of double-acting cylinder, and the hollow shock-absorbing ball 953 is interposed in 952 He of nylon lower plate
The position corresponding with hollow shock-absorbing ball 953 of between nylon upper plate 954 and 954 top surface of nylon upper plate and 952 bottom surface of nylon lower plate
The place of setting is recessed with accommodation groove respectively, passes through fastening between the nylon upper plate 954, nylon lower plate 952 and nitrile rubber bottom plate 951
Part is connected.Further, also divide in the accommodation groove of 952 bottom surface of accommodation groove and nylon lower plate of 954 top surface of nylon upper plate
It Qian Zhuanyou not damping spring 955.There is good damping effect using the resilient cushion 95 of the construction, it can by the resilient cushion 95
Substantially reduce influence of the vibration to gas control accessory caused by butterfly switch.In addition, the concentration plate 94 is equipped with several shock relieve vents,
It is upward convex equipped with shock structure 956 that 954 top surface of nylon upper plate corresponds to difference at the position of shock relieve vent.
In the present embodiment, the butterfly plate 20, which is arranged in the access way of valve body 10 and has, is integrally attached to one side
Mounting post, axially through perforation is provided in the mounting post, the valve rod 30 is axial to be arranged in perforation and by carving pin
It is connected with the mounting post of butterfly plate 20, such valve rod 30 can synchronize after rotating to be driven the operating of butterfly plate 20 in the same direction and realize medium
On-off.Outside valve rod 30 between the mounting post upper end and valve body 10 and outside the valve rod 30 between mounting post lower end and valve body 10
It is also separately installed with retaining ring 61, one end of the retaining ring 61 is connected on valve body 10 and the other end is connected in mounting post, is passed through
The sustainable firmly butterfly plate 20 of the retaining ring 61, makes butterfly plate 20 not let droop and valve seal is caused to fail.To guarantee retaining ring 61 and valve
The concentricity of bar 30, the present embodiment offer mounting groove in 10 corresponding position of valve body, and the adaptation of retaining ring 61 is mounted on installation
Without horizontal nutation in slot.
First annular terrace 11, the first annular rank are provided at the close access way position of 10 side of valve body
The radial inner end in face 11 is recessed with the second annular terrace 12, is equipped on the first annular terrace 11 by hex screw adaptation
Seal receptacle 50 is installed between annular insert 40, the annular insert 40 and first annular terrace 11 and the second annular terrace 12,
As shown in Figs. 1-5.
The seal receptacle 50 is installed in sealing base portion 51 and opposing seal base portion in the second annular terrace 12 by adaptation
The other side of 51 side towards clamping portion 52 and opposing seal base portion 51 that annular insert 40 protrudes out is convex towards annular insert 40
The variant part 53 stretched, the tilt angle of the preferably described 52 opposing seal base portion 51 of clamping portion are 10 °, and the variant part 53 is opposite
The tilt angle for sealing base portion 51 is 10 °, and top pressures groove 54, the annular insert are formed between the variant part 53 and clamping portion 52
40 correspond at the position of top pressures groove 54 to protrude out and are provided with compatible with top pressures groove 54 press and enclose 41.The end of the clamping portion 52
Holding, there is adaptation to be interposed in the clamping piece 520 between first annular terrace 11 and annular insert 40, and the annular insert 40 is corresponding
Clamping groove 42 is equipped at the position of clamping piece 520, which is adjacent to the radial outside of press circle 41.The variant part
The protruding length of 53 opposing seal base portions 51 is greater than the protruding length of 52 opposing seal base portion 51 of clamping portion, the variant part 53
End has support chip 530, and the annular insert 40, which corresponds to, is equipped with support slot 43, the support slot at the position of support chip 530
43 are adjacent to the radially inner side of press circle 41, and the width of the support slot 43 is greater than the thickness of support chip 530, the support chip
530 can be arranged in inner and outer movable in support slot 43.The seal receptacle 50 of the present embodiment is fixedly mounted on the by annular insert 40
On one annular terrace 11 and the second annular terrace 12.
The side of the separate top pressures groove 54 of the variant part 53 is by the first scalene cone 531, the second scalene cone 532, transition face
533 and supporting surface 534 form, first scalene cone 531 arises from matching with the second annular terrace 12 for sealing base portion 51
The radial inner edge of mating surface simultaneously tilts extension towards access way center, and second scalene cone 532 arises from the first scalene cone 531
The other end and extend towards far from the inclination of access way center, one end of the supporting surface 534 protrudes into support slot 43, the mistake
Cross second scalene cone of the connection of face 533 532 and supporting surface 534.Orientation where the center of the access way is the present embodiment sealing
Orientation where the center of seat 50.20 outer peripheral edge of butterfly plate is set as offseting with the first scalene cone 531 the scalene cone body or arc of cooperation
Shape face body, 20 outer peripheral edge of butterfly plate and seal receptacle 50 and annular insert 40 constitute the sealing pair of the present embodiment butterfly valve, by this
Sealing pair can make butterfly valve reach the two way seal of pressure medium, when butterfly plate 20 goes to its outer peripheral edge and first at 50 position of seal receptacle
531 compression fit of scalene cone and realize sealing.
The seal receptacle 50 is formed with numerically-controlled machine tool Precision Machining.It is wanted according to operating temperature of the actual condition to seal receptacle 50
It asks, the seal receptacle 50 of the present embodiment selects different materials, makes it reliably to meet operating temperature to it under rated pressure
Influence, it is specific: to select the seal receptacle 50 of PTFE material, operating temperature is up to 180 DEG C；Select the sealing of RPTFE material
Seat 50, operating temperature is up to 200 DEG C；The seal receptacle 50 of PPL material is selected, operating temperature is up to 220 DEG C；Select PEEK material
The seal receptacle 50 of matter, operating temperature is up to 250 DEG C.
In the present embodiment, the top of the valve body 10 is equipped with the upper shaft hole being connected with access way, the valve body 10
Bottom end be equipped with the lower shaft hole that is connected with access way, the upper shaft hole and lower shaft hole are corresponding up and down, the valve rod 30 it is upper
Portion is arranged in upper shaft hole, and the bottom end of the valve rod 30 is arranged in lower shaft hole, is also set up between the upper shaft hole and valve rod 30
There is Upper shaft sleeve 13, Lower shaft sleeve 14 is additionally provided between the lower shaft hole and valve rod 30, can be made by Upper shaft sleeve 13 and Lower shaft sleeve 14
30 shaft centerline of valve rod remains unchanged, and can reduce friction, is able to satisfy 2,000,000 service life requirements.The Upper shaft sleeve 13
Nano-plating self lubrication bearing on the market can be selected with Lower shaft sleeve 14.
For avoid at work medium leaked outward along valve rod 30 and butterfly valve caused to be revealed, the valve body 10 of the present embodiment pushes up
It is additionally provided with stuffing seal between end and valve rod 30, the stuffing seal includes filler assembly 70 and binder component
80, the filler assembly 70 is arranged in the filler chamber between valve rod 30 and valve body 10 by the compression of binder component 80 of top,
The filler chamber is located at 13 top of Upper shaft sleeve, and the binder component 80 is connected with valve body 10.
As a kind of preferred embodiment of stuffing seal, as shown in fig. 7, the filler assembly 70 of the present embodiment is only with soft
Property graphite adds carbon fiber, and the binder component 80 is made of the fusiform briquetting 81 and pressure cylinder 82 of integrally connected, the pressure cylinder 82
Shape is adapted with filler chamber, the pressure cylinder 82 be pressed into filler chamber and with 70 upper end compression fit of filler assembly, the fusiform
Briquetting 81 is fixedly mounted on the radial flange on 10 top of valve body by fastener.
As another preferred embodiment of stuffing seal, as Figure 8-9, the filler assembly 70 of the present embodiment includes
Lubrication ring 71, soft graphite add carbon fiber filler ring 72, braided packing ring 73 and expanded graphite packing ring 74, the lubrication ring 71
It is sleeved on outside valve rod 30 and is located at filler chamber's bottom, the soft graphite adds carbon fiber filler ring 72 to be sleeved on lubrication ring 71
Outside the valve rod 30 of side, the braided packing ring 73 is sleeved on soft graphite and adds outside the valve rod 30 of 72 top of carbon fiber filler ring, institute
It states expanded graphite packing ring 74 to be sleeved on the outer of braided packing ring 73 and be located in filler chamber, the braided packing ring 73 and expansion
Carbon packing ring 74 is in inside and outside relationship ofloops.The binder component 80 includes pressing sleeve 84 and pressing plate 83, the bottom of the pressing sleeve 84
End adaptation is packed into filler chamber and its bottom end correspond to it is downwardly convex equipped with pressing ring 840 at the position of braided packing ring 73, it is described
Pressing ring 840 and 73 compression fit of braided packing ring, the pressing plate 83, which corresponds at the position of pressing sleeve 84 to run through, is equipped with perforation, described
The top movable of pressing sleeve 84 is arranged in perforation and valve rod 30 is protruded upward across pressing sleeve, and 84 middle part diameter convex of the pressing sleeve
It is provided with supporting block 841, the second spring of compressive state is set with outside the pressing sleeve 84 between the supporting block 841 and pressing plate 83
85；The pressing plate 83 correspond to 10 top radial flange of valve body position at be vertically connected with adjusting screw rod 86, the radial convex
Edge, which corresponds to, is equipped with adjustment hole at the position of adjusting screw rod 86, the adjusting screw rod 86 is arranged in the opposite tune of adjustment hole and its bottom end
Knothole protrudes out downwards, and the bottom end of the adjusting screw rod 86 is threaded with adjustment block 87, the adjustment block 87 and radial flange bottom
It is set with the first spring 88 outside adjusting screw rod 86 between face, the rigidity of the second spring 85 is rigid less than the first spring 88
Degree.In this way, soft graphite adds carbon fiber filler ring 72 not only to have lubricating function using the stuffing seal of the preferred embodiment,
And a certain amount of expansion is had after being heated, make to seal relatively reliable and high temperature resistant, has well solved the valve rod of existing butterfly valve
30 with 10 junction gas of valve body leak outside the problem of, and by lubrication ring 71 carbon fiber filler ring 72 and valve rod are added to soft graphite
30 carry out reinforcement lubrication and protection, and enhancing fastness and crush resistance by braided packing ring 73 can match to compress with pressing sleeve 84
It closes, by expanded by heating and the filler chamber's side wall excellent sealing of expanded graphite packing ring 74, to improve entire sealing dress
The high-temperature resistant result and medium-tight performance set.In addition, when finding that medium leaks in use process, it can upward operation adjustment block
87, the first spring 88 is squeezed to generate a downward active force to adjusting screw rod 86 and pressing plate 83, then by being sleeved on pressing plate 83
Pressing sleeve 84 is pressed downward by the second spring 85 between pressing sleeve 84, so that the lasting clamping force to filler assembly 70 is kept,
Guarantee sealing effect, and when not adjusting adjustment block 87, second spring 85 can be sprung back after filler assembly 70 is worn
Pressing sleeve 84 is pressed into downwards again.For the ease of obtaining the case where filler assembly 70 is worn in time, the present embodiment can be in pressing sleeve 84
Outer wall setting index line can make index line opposite after filler assembly 70 is worn and pressing sleeve 84 presses downward to certain distance
The height and position of pressing plate 83 changes, that is, can reach and user is reminded to adjust adjustment block 87.
Certainly, it is complete can be replaced mutually completion one for the filler assembly 70 in above two preferred embodiment and binder component 80
Stuffing seal.
Based on the above technical solution, as shown in fig. 6, being to be caused 61 innings of retaining ring after avoiding 30 high-frequency of valve rod from rotating
Butterfly plate 20 is sagging after portion's abrasion, and 10 bottom end of the present embodiment valve body, which corresponds at the position of lower shaft hole, is equipped with end cap by fastener
15, the end cap 15 and valve rod are coaxially installed with tapered roller thrust bearing 62 between 30 bottom end, to improve the gravity of butterfly plate 20
It is damaged caused by sagging, improves the sealing effect of valve, can achieve 1,000,000 service lifes.Further, for convenient for peace
Dress and the height for adjusting tapered roller thrust bearing 62, the present embodiment also cooperate in the supported underneath of tapered roller thrust bearing 62
There is support plate 63, the lower section of the support plate 63 is packed in 15 top of end cap by adjusting screw 64.
The basic principles and main features and advantages of the present invention of the invention have been shown and described above, the industry
Technical staff is it should be appreciated that the present utility model is not limited to the above embodiments, and described in the above embodiment and specification
It is to illustrate the principles of the present invention, under the premise of not departing from the inventive spirit of the present invention and range, the utility model is also had
Various changes and modifications, these various changes and improvements fall within the scope of the claimed invention, the requires of the utility model
Protection scope is defined by the appending claims and its equivalent thereof.
Claims (5)
1. tool prevents the three-eccentric-butterfly-valve of the sagging function of butterfly plate, including passing through valve rod vertically and being rotatably arranged on valve body
The top of butterfly plate, the valve rod is arranged in the upper shaft hole of top end of the valve body, and the bottom end of the valve rod is arranged under valve body bottom end
In axis hole, which is characterized in that it is separately installed with retaining ring outside valve rod between the valve body and butterfly plate upper and lower side, the one of the retaining ring
End is connected on valve body and the other end is connected on butterfly plate；The valve body bottom end correspond to lower shaft hole position at pass through fastener
End cap is installed, is coaxially installed with tapered roller thrust bearing between the end cap and valve rod bottom end.
2. according to claim 1 have the three-eccentric-butterfly-valve for preventing the sagging function of butterfly plate, which is characterized in that the valve body
With mounting groove compatible with retaining ring is offered at retaining ring opposite position.
3. according to claim 1 have the three-eccentric-butterfly-valve for preventing the sagging function of butterfly plate, which is characterized in that the butterfly plate packet
The mounting post for being integrally attached to one side is included, the mounting post is interior axially through perforation is provided with, and the valve rod is axially arranged in
It is connected in perforation and by carving pin with the mounting post of butterfly plate, one end of the retaining ring is connected in mounting post.
4. according to claim 1 have the three-eccentric-butterfly-valve for preventing the sagging function of butterfly plate, which is characterized in that the upper shaft hole
It is additionally provided with Upper shaft sleeve between valve rod, is additionally provided with Lower shaft sleeve between the lower shaft hole and valve rod.
5. according to any one of claims 1 to 4 have the three-eccentric-butterfly-valve for preventing the sagging function of butterfly plate, which is characterized in that
The supported underneath of the tapered roller thrust bearing is combined with support plate, and the lower section of the support plate is packed in by adjusting screw
Above end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821641484.8U CN208793653U (en) | 2018-10-10 | 2018-10-10 | Tool prevents the three-eccentric-butterfly-valve of the sagging function of butterfly plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821641484.8U CN208793653U (en) | 2018-10-10 | 2018-10-10 | Tool prevents the three-eccentric-butterfly-valve of the sagging function of butterfly plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208793653U true CN208793653U (en) | 2019-04-26 |
Family
ID=66211724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821641484.8U Active CN208793653U (en) | 2018-10-10 | 2018-10-10 | Tool prevents the three-eccentric-butterfly-valve of the sagging function of butterfly plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208793653U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321406A (en) * | 2022-01-10 | 2022-04-12 | 江苏明江阀业有限公司 | High-performance anti-leakage pneumatic full-lining butterfly valve |
-
2018
- 2018-10-10 CN CN201821641484.8U patent/CN208793653U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321406A (en) * | 2022-01-10 | 2022-04-12 | 江苏明江阀业有限公司 | High-performance anti-leakage pneumatic full-lining butterfly valve |
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