CN209262308U - A kind of self-locking type seals all-welded ball valve firmly - Google Patents
A kind of self-locking type seals all-welded ball valve firmly Download PDFInfo
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- CN209262308U CN209262308U CN201822061577.XU CN201822061577U CN209262308U CN 209262308 U CN209262308 U CN 209262308U CN 201822061577 U CN201822061577 U CN 201822061577U CN 209262308 U CN209262308 U CN 209262308U
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- wheel pole
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- 239000002184 metal Substances 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000004080 punching Methods 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000003566 sealing material Substances 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005570 vertical transmission Effects 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model discloses a kind of self-locking types to seal all-welded ball valve firmly, belong to valve technology field, including valve body, metal seat valve, sphere, valve rod and regulating mechanism, the inside of valve body is fixed with pressure ring and forms annular piston chamber, annular piston chamber is separated into control chamber A and control chamber B by the intracavitary setting annular flange of annular piston, annular flange；Regulating mechanism has cylinder body, and cylinder body has middle medium channel and annular piston chamber；The annular piston of cylinder body is intracavitary to be fitted with piston ring, and annular piston chamber is separated into suppressing chamber and close to the punching press chamber of hand wheel pole, suppress and intracavitary be fitted with spring far from hand wheel pole by piston ring；The peripheral part of hand wheel pole has the plate of circular ring shape, and sealing is fitted with locking pin on cylinder body, and one end of locking pin is fixed, and the other end of locking pin is corresponding with plate on the piston ring, and plate is equipped with the lock hole of pluggable locking pin.The utility model sealing effect is good, and convenient for adjusting and locking.
Description
Technical field
The utility model belongs to valve technology field more particularly to a kind of self-locking type seals all-welded ball valve firmly.
Background technique
Ball valve is that a kind of sphere is driven by valve rod, and is rotated around ball valve axis to realize the valve of on-off.Currently,
With the continuous improvement of city heat supply demand, or else the pressure rating and heat supply temperature of heat supply industrial pipeline are broken and are changed,
Security requirement hence for high temperature resistant, high voltage performance and the valve entirety of heating system sealing material is constantly mentioning
It is high.
Existing routine ball valve configurations include valve body, metal seat valve, sphere and valve rod, using soft between metal seat valve and sphere
Sealing material sealing, is limited, the ball valve of this seal construction is not able to satisfy heating system more and more by sealing material characteristic
High temperature and pressure requirement.And there is presently no suitable existing ball valve sealing material substitutions in the market, therefore it is necessary to design one
The new sealing structure for not depending on sealing material characteristic is planted to meet the high temperature and pressure requirement of ball valve.
Another problem, existing ball valve itself latch-up-free mechanism or only Manual locking mechanism are inconvenient for use.
Summary of the invention
In view of the problems of the existing technology, the utility model, which provides, a kind of solve existing ball valve sealing material and no longer can
The self-locking type for meeting requirement and the problem of locking inconvenience seals all-welded ball valve firmly.
The utility model is realized in this way a kind of self-locking type seals all-welded ball valve firmly, including valve body, metal seat valve,
Sphere, valve rod and regulating mechanism, the valve body have into hole and portal, and the sphere is mounted on the valve by valve rod and bearing
Internal portion has in the sphere connection described into hole and the medium channel to portal, the valve body into hole and the spherical ball
Between face and portalling for valve body is separately installed with the metal seat valve between sphere spherical surface；It is characterized by:
The inside of the valve body is corresponding into hole and to portal and is respectively fixed with pressure ring, the pressure ring, valve body and metal seat valve it
Between constitute the annular piston chamber of sealing, the outer surface of the metal seat valve has is set to the annular piston chamber in a manner of piston
Annular piston chamber is separated into the control of control chamber A and close sphere far from sphere by interior annular flange, the annular flange
Chamber B processed；
The regulating mechanism has the cylinder body being fixed on the valve body, and the cylinder body has middle medium channel and surround
The annular piston chamber of the middle medium channel；
Drive rod, one end transmission connection valve rod of the drive rod, institute are provided through in the middle medium channel
State the other end connection hand wheel pole of drive rod；
The annular piston of the cylinder body is intracavitary to be fitted with piston ring, and the annular piston chamber is separated into far by the piston ring
From the hand wheel pole suppress chamber and close to the punching press chamber of the hand wheel pole, described suppress intracavitary is fitted with spring；
The peripheral part of the hand wheel pole has the plate of circular ring shape, and sealing is fitted with locking pin, the lock on the cylinder body
One end of rationed marketing is fixed on the piston ring, and the other end of the locking pin is corresponding with the plate, is set in the plate
There is the lock hole of the pluggable locking pin；
Further include medium pressure source, is connected between the medium pressure source and the control chamber A by the first access, it is described
Be connected between medium pressure source and the control chamber B and punching press chamber by alternate path, first access and alternate path it
Between be provided with control the first access and alternate path on off operating mode control valve.
Metal seat valve in the utility model is made of metal, the metal seat valve in the utility model with annular flange with
The mode of piston is mounted in the annular piston chamber on the inside of valve body, this structure makes metal seat valve that can realize shifting living.Control chamber A and control
Pressure difference in chamber B processed is to drive the metal seat valve power living moved.Living move of metal seat valve can enable metal seat valve and sphere spherical surface
Fitting or separation.Both during sphere rotation is that ball valve is adjusted, the metal seat valve being detached from sphere can avoid completely
Between abrasion guarantee ball valve under the working environment of high temperature and pressure to avoid seal failure caused by due to abrasion completely
Sealing performance.In addition, the metal seat valve being detached from sphere can reduce the torque in sphere rotation process, ball valve is facilitated to adjust.
After regulating mechanism in the utility model realizes that unlock, the intracavitary pressure of punching press disappear by the intracavitary punching press of punching press,
Locking pin plays a role under the action of the spring, realizes automatic locking, to facilitate operation.
Sealing structure and locking mechanism in the utility model are using high-pressure medium as driving source, to realize connection
It moves and there is uniformity.
In the above-mentioned technical solutions, it is preferred that the internal diameter of the metal seat valve with it is described identical into hole and the internal diameter to portal.
This structure avoids generating ladder between metal seat valve and valve body inner face, subtracts the resistance that liquid flows in valve body.
In the above-mentioned technical solutions, it is preferred that be provided on the valve body identical with control chamber A and control chamber B respectively
Mudhole is equipped with blowdown valve on the mudhole.When reaching the plant maintenance phase, blowdown valve can be opened, cleaning control chamber,
The impurity in control chamber is discharged, guarantees that metal seat valve smoothly moves.
In the above-mentioned technical solutions, it is preferred that the axis of the axis horizontal of the drive rod, the valve rod is vertical, described
Drive rod is connect with the valve rod by Worm Wheel System.The technical program provides the connection side of a kind of rotating bar and valve rod
Formula is connected by worm and gear vertical-transmission.
In the above-mentioned technical solutions, it is preferred that the cylinder body is fixed with terminal pad close to one end of the punching press chamber, described
Alternate path is communicated by the terminal pad with the punching press chamber, and the locking pin sealing is inserted into the terminal pad.Connection
Disk can be used as the end cap of cylinder body, play the role of the annular piston chamber of sealed cylinder block.
One end of the hand wheel pole is provided with the jack of grafting drive rod, and hand wheel pole is connected by key with drive rod, described
The other end of hand wheel pole is fixed with handwheel disk；End cap is fixed in the terminal pad, the inside of the end cap is fixed with limit spiral shell
It follows closely, limit plate is fixed on the hand wheel pole, the limit plate is set on the inside of the end cap.The technical program provides a kind of handwheel
The specific connection type of bar and drive rod takes turns the grafting by way of it can axially live and move of bar and drive rod, is situated between in pressure chamber high pressure
In the case that matter fails, plate and locking pin can be made to be detached from by axial shifting hand wheel pole living, realization unlocks manually.Separately
Outside, the concrete structure design of limit plate and stop screw is detached from due to can moving past greatly to avoid hand wheel pole and drive rod because axially living
Connection.
Detailed description of the invention
Fig. 1 is the utility model structure diagram；
Fig. 2 is the cross-sectional view of adjustment structure in the utility model；
Fig. 3 is the partial sectional view of the utility model；
Fig. 4 is the utility model sealing structure top cross-sectional view；
Fig. 5 is the utility model sealing structure lower part cross-sectional view.
In figure, 10, valve body；101, control chamber A；102, control chamber B；20, metal seat valve；30, sphere；40, pressure ring；50,
Valve rod；60, regulating mechanism；601, cylinder body；602, drive rod；603, hand wheel pole；604, key；605, piston ring；606, punching press chamber；
607, spring；608, plate；609, locking pin；610, terminal pad；611, handwheel disk；612, end cap；613, stop screw；614,
Limit plate；70, blowdown valve.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to embodiments, to this
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain that this is practical
It is novel, it is not used to limit the utility model.
For solve existing ball valve sealing material be no longer able to satisfy requirement and locking it is inconvenient the drawbacks of, the utility model
Provide a kind of self-locking type and seal all-welded ball valve firmly, this ball valve can to avoid ball valve due to abrasion caused by seal failure, protect
Demonstrate,prove sealing performance of the ball valve under the working environment of high temperature and pressure and easy to adjust.In order to further illustrate the knot of the utility model
It is as follows to be described with reference to the accompanying drawings book for structure:
Please refer to Fig. 1 and Fig. 3, a kind of self-locking type seals all-welded ball valve, including valve body 10, metal seat valve 20, sphere firmly
30, valve rod 50 and regulating mechanism 60.
Fig. 4 and Fig. 5 are please referred to, the valve body 10 has into hole and portals, and the sphere 30 is pacified by valve rod 50 and bearing
Inside the valve body 10.That is the upper and lower part of sphere 30 is respectively fixed with the upper valve rod 50 and lower valve rod 50 of coaxial line,
Upper valve rod 50 and lower valve rod 50 collectively constitute the valve rod 50.Upper valve rod 50 and lower valve rod 50 are mounted on valve body 10 by bearing
On.What sphere 30 was set to valve body 10 has connection described into hole and the medium channel to portal into hole and between portalling, in sphere 30,
Sphere 30 using 50 axis of valve rod as the spinning movement of axis, can enable medium channel connection valve body 10 into hole and portalling, so realization
The on-off of ball valve.
Valve body 10 between 30 spherical surface of hole and sphere and portalling for valve body 10 installs respectively between 30 spherical surface of sphere
There is metal seat valve 20.Metal seat valve 20 be valve body 10 into hole, between the medium channel of sphere 30 transition of portalling it is main close
Sealing.
The inside of valve body 10 is corresponding into hole and to portal and is respectively fixed with pressure ring 40.Pressure ring 40, valve body 10 and metal seat valve 20
Between constitute the annular piston chamber of sealing.The outer surface of metal seat valve 20 is intracavitary with annular piston is set in a manner of piston
Annular flange.Annular piston chamber is separated into the control of control chamber A101 and close sphere 30 far from sphere 30 by annular flange
Chamber B102.Ring type seal is equipped between outer peripheral surface and valve body 10 of the metal seat valve 20 far from 30 end of sphere, metal seat valve 20 leans on
It is equipped with ring type seal between the outer peripheral surface and pressure ring 40 at nearly 30 end of sphere, is equipped with ring between the outer peripheral surface valve body 10 of annular flange
Shape sealing ring.The movable mode of the piston type of annular flange, which is arranged, enables valve body 10 fixed corresponding thereto realize mobilizable match
Dress.Pressure difference in control chamber A101 and control chamber B102 can enable valve body 10 generate the activity close to or far from sphere 30, from
And realize the contact and disengaging of valve body 10 with 30 surface of sphere.Sealing is played under valve body 10 and 30 surface contact conditions of sphere to make
With under, valve body 10 and 30 surface disengaged position of sphere, it is ensured that sphere 30 rotates smooth, reduces abrasion, is avoided completely because of abrasion
Seal failure caused by and guarantees sealing performance of the ball valve under the working environment of high temperature and pressure.In the present embodiment, to guarantee valve
Body 10 and 30 surface reliable contacts of sphere, valve body 10 is the circumference arc being adapted to 30 periphery of sphere close to the end face of sphere 30
Face.
Regulating mechanism 60 is the component combination for regulation ball valve opening and closing, is rotated for controlling sphere 30, to enable sphere 30
Medium channel with into hole, portal opposite or be staggered.
Referring to Fig. 2, regulating mechanism 60 has cylinder body 601, cylinder body 601 is fixed on valve body 10.Cylinder body 601 has intermediary
Matter channel and the annular piston chamber for surrounding middle medium channel.Drive rod 602, drive rod are provided through in middle medium channel
602 one end transmission connection valve rod 50, the other end of drive rod 602 connect hand wheel pole 603.
The adjusting to ball valve can be realized in rotation rotating bar.
The annular piston of cylinder body 601 is intracavitary to be fitted with piston ring 605, and annular piston chamber is separated into separate by piston ring 605
Hand wheel pole 603 suppresses chamber and the punching press chamber 606 by stating hand wheel pole 603, suppresses and intracavitary is fitted with spring 607.Hand wheel pole 603
Peripheral part there is the plate 608 of circular ring shape, sealing is fitted with locking pin 609 on cylinder body 601, and one end of locking pin 609 is fixed
On piston ring 605, the other end of locking pin 609 is corresponding with plate 608, and plate 608 is equipped with pluggable locking pin 609
Lock hole.After locking pin 609 is inserted into plate 608, rotated by limitation with the relatively-stationary drive rod 602 of plate 608, it is so real
The locking that now ball for ball valve 30 is rotated.And the bonding state of locking pin 609 and plate 608 is then by can be in the annular of cylinder body 601
Piston ring 605 control living moved, mobile realization locking pin 609 grafting of the piston ring 605 close to or far from plate 608 in plunger shaft
Or it is detached from plate 608.Pressure and the pressure difference of spring 607 control piston ring 605 are mobile in punching press chamber 606.
Medium pressure source is needed in the utility model, medium pressure source can be other equipment or system in ball valve working environment
Pressure source, can also be the independent matched equipment (such as hydraulic station) that can provide pressure medium.
It is connected between medium pressure source and control chamber A101 by the first access, medium pressure source and control chamber B102 and punching
It presses and is connected between chamber 606 by alternate path.The first access of control and second is provided between first access and alternate path to lead to
The control valve of road on off operating mode.In the present embodiment, control valve is two-position four-way hydraulicdirectional control valve, guarantees within the same period two
One of access is rushed by pressure.When the punching of the first access has pressure, valve body 10 contacts sealing with sphere 30, and spring 607 presses piston
Ring 605 and make 609 grafting plate 608 of locking pin, ball valve can not be adjusted under this state.When needing to adjust, the first access pressure release,
Alternate path punching press is detached from the pressure effect lower valve body 10 and sphere 30 of control chamber B102, and the pressure of punching press chamber 606 is greater than bullet
607 pressure of spring and press piston ring 605 and make locking pin 609 be detached from plate 608, at this time lock state release, rotation can be passed through
Turn drive rod 602 to adjust sphere 30 and rotate, with regulation ball valve state.
In the above-mentioned technical solutions, it is preferred that the internal diameter of metal seat valve 20 is identical as into hole and the internal diameter to portal.This structure
It avoids generating ladder between 10 inner face of metal seat valve 20 and valve body, subtracts the resistance that liquid flows in valve body 10.
In the above-mentioned technical solutions, it is preferred that be provided on valve body 10 respectively with control chamber A101 and control chamber B102 phase
With mudhole, blowdown valve 70 is installed on mudhole.When reaching the plant maintenance phase, blowdown valve 70, cleaning control can be opened
The impurity in control chamber is discharged in chamber, guarantees that metal seat valve 20 is smoothly mobile.
The axis of the axis horizontal of drive rod 602, valve rod 50 is vertical, and drive rod 602 and the valve rod 50 pass through worm gear snail
Bar transmission connection.The technical program provides the connection type of a kind of rotating bar and valve rod 50, that is, passes through worm and gear vertical-transmission
Connection.
Cylinder body 601 is fixed with terminal pad 610 close to one end of punching press chamber 606.Alternate path passes through terminal pad 610 and punching press
Chamber 606 communicates, and the sealing of locking pin 609 is inserted into terminal pad 610.Terminal pad 610 can be used as the end cap 612 of cylinder body 601, play
The annular piston chamber of sealed cylinder block 601 acts on.
One end of hand wheel pole 603 is provided with the jack of grafting drive rod 602, and hand wheel pole 603 and drive rod 602 pass through key
604 connections, the other end of hand wheel pole 603 are fixed with handwheel disk 611.Be fixed with end cap 612 in terminal pad 610, end cap 612 it is interior
Portion is fixed with stop screw 613, and limit plate 614 is fixed on hand wheel pole 603, and limit plate 614 is set to 612 inside of end cap.This skill
Art scheme provides the specific connection type of a kind of hand wheel pole 603 and drive rod 602, and wheel bar is with drive rod 602 by can axially live
The mode grafting of shifting can make plate 608 by axial shifting hand wheel pole 603 living in the case where the failure of pressure chamber high-pressure medium
It is detached from locking pin 609, realization unlocks manually.In addition, the concrete structure design of limit plate 614 and stop screw 613, it can
It is disconnected due to being moved past greatly with drive rod 602 because axially living to avoid hand wheel pole 603.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (6)
1. a kind of self-locking type seals all-welded ball valve, including valve body (10), metal seat valve (20), sphere (30), valve rod (50) firmly
With regulating mechanism (60), the valve body (10) has into hole and portals, and the sphere (30) is installed by valve rod (50) and bearing
It is internal in the valve body (10), have connection described into hole and the medium channel to portal, the valve body in the sphere (30)
(10) between hole and the sphere (30) spherical surface and portalling for valve body (10) installs respectively between sphere (30) spherical surface
There are the metal seat valve (20)；It is characterized by:
The inside of the valve body (10) is corresponding to be respectively fixed with pressure ring (40) into hole and portalling, the pressure ring (40), valve body (10)
The annular piston chamber of sealing is constituted between metal seat valve (20), the outer surface of the metal seat valve (20) has in a manner of piston
It is set to the intracavitary annular flange of the annular piston, annular piston chamber is separated into far from sphere (30) by the annular flange
Control chamber A (101) and close to sphere (30) control chamber B (102)；
The regulating mechanism (60) has the cylinder body (601) being fixed on the valve body (10), and the cylinder body (601) has intermediary
Matter channel and the annular piston chamber for surrounding the middle medium channel；
It is provided through in the middle medium channel drive rod (602), one end transmission connection valve of the drive rod (602)
The other end of bar (50), the drive rod (602) connects hand wheel pole (603)；
The annular piston of the cylinder body (601) is intracavitary to be fitted with piston ring (605), and the piston ring (605) is living by the annular
Plug chamber, which is separated into, suppresses chamber and the punching press chamber (606) close to the hand wheel pole (603), institute far from the hand wheel pole (603)
It states to suppress and intracavitary is fitted with spring (607)；
The peripheral part of the hand wheel pole (603) has the plate (608) of circular ring shape, and sealing is fitted with lock on the cylinder body (601)
One end of rationed marketing (609), the locking pin (609) is fixed on the piston ring (605), the locking pin (609) it is another
Hold, the plate (608) lock hole equipped with the pluggable locking pin (609) corresponding with the plate (608)；
Further include medium pressure source, is connected between the medium pressure source and the control chamber A (101) by the first access, institute
It states and is connected between medium pressure source and the control chamber B (102) and punching press chamber (606) by alternate path, first access
The control valve of control the first access and alternate path on off operating mode is provided between alternate path.
2. self-locking type according to claim 1 seals all-welded ball valve firmly, it is characterised in that: the metal seat valve (20)
Internal diameter with it is described identical into hole and the internal diameter to portal.
3. self-locking type according to claim 1 seals all-welded ball valve firmly, it is characterised in that: be arranged on the valve body (10)
Have respectively with control chamber A (101) and the identical mudhole of control chamber B (102), blowdown valve (70) are installed on the mudhole.
4. self-locking type according to claim 1 seals all-welded ball valve firmly, it is characterised in that: the drive rod (602)
The axis of axis horizontal, the valve rod (50) is vertical, and the drive rod (602) and the valve rod (50) pass through Worm Wheel System
Connection.
5. self-locking type according to claim 1 seals all-welded ball valve firmly, it is characterised in that: the cylinder body (601) is close
One end of the punching press chamber (606) is fixed with terminal pad (610), the alternate path by the terminal pad (610) with it is described
Punching press chamber (606) communicates, and locking pin (609) sealing is inserted on the terminal pad (610).
6. self-locking type according to claim 5 seals all-welded ball valve firmly, it is characterised in that: the hand wheel pole (603)
One end is provided with the jack of grafting drive rod (602), and hand wheel pole (603) is connect with drive rod (602) by key (604), described
The other end of hand wheel pole (603) is fixed with handwheel disk (611)；End cap (612), the end are fixed on the terminal pad (610)
The inside of lid (612) is fixed with stop screw, is fixed with limit plate (614), the limit plate on the hand wheel pole (603)
(614) it is set on the inside of the end cap (612).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822061577.XU CN209262308U (en) | 2018-12-07 | 2018-12-07 | A kind of self-locking type seals all-welded ball valve firmly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822061577.XU CN209262308U (en) | 2018-12-07 | 2018-12-07 | A kind of self-locking type seals all-welded ball valve firmly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209262308U true CN209262308U (en) | 2019-08-16 |
Family
ID=67562712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822061577.XU Withdrawn - After Issue CN209262308U (en) | 2018-12-07 | 2018-12-07 | A kind of self-locking type seals all-welded ball valve firmly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209262308U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340398A (en) * | 2018-12-07 | 2019-02-15 | 天津国际机械有限公司 | A kind of self-locking type seals all-welded ball valve firmly |
-
2018
- 2018-12-07 CN CN201822061577.XU patent/CN209262308U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340398A (en) * | 2018-12-07 | 2019-02-15 | 天津国际机械有限公司 | A kind of self-locking type seals all-welded ball valve firmly |
| CN109340398B (en) * | 2018-12-07 | 2024-08-09 | 天津国际机械有限公司 | Self-locking type hard-sealing all-welded ball valve |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190816 Effective date of abandoning: 20240809 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190816 Effective date of abandoning: 20240809 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |