CN108999989A - A kind of gate valve easy to repair - Google Patents
A kind of gate valve easy to repair Download PDFInfo
- Publication number
- CN108999989A CN108999989A CN201811047567.9A CN201811047567A CN108999989A CN 108999989 A CN108999989 A CN 108999989A CN 201811047567 A CN201811047567 A CN 201811047567A CN 108999989 A CN108999989 A CN 108999989A
- Authority
- CN
- China
- Prior art keywords
- valve
- fixedly connected
- repair
- middle position
- deck
- 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.)
- Pending
Links
Classifications
-
- 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
- F16K1/221—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 specially adapted operating means therefor
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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
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a kind of gate valves easy to repair, including valve body, the upper and lower ends of valve inner are fixedly connected to sealing bearing, sealing Bearing inner is rotatably connected to rotational valve plate mechanism, the top of valve deck is provided with seal, the middle position of upper seal is run through and is rotatably connected to valve rod, middle position inside valve deck is provided with the first O-shaped washer, middle position inside valve deck and it is located at below the first O-shaped washer and is provided with thrust bearing, middle position inside valve deck and it is located at below thrust bearing and is provided with the second O-shaped washer, valve rod, which is located inside valve pit, is fixedly connected with driving semi-gear at the axle center of one end, the present invention relates to gate valve technical fields.The gate valve easy to repair has reached realization valve rod and valve plate discrete transmission, reduces manual torsion when valve rotation, the operating characteristics for improving valve body, avoids traditional maintenance from needing to close main valve, increases the portability of maintenance, maintenance efficiency is improved, while reducing the purpose of the waste of water resource.
Description
Technical field
The present invention relates to gate valve technical field, specially a kind of gate valve easy to repair.
Background technique
Gate valve is an opening and closing element flashboard, and the direction of motion and flow direction of flashboard are perpendicular, gate valve can only make standard-sized sheet and
Quan Guan cannot make adjustments and throttle.Gate valve is sealed by valve seat and rams contact, and usual sealing surface can deposited metal material
To increase wearability, such as built-up welding 1Cr13, STL6, stainless steel.Flashboard has rigid flashboard and flexible disc, not according to flashboard
Together, gate valve is divided into rigid gate valve and resilient gate valve.
The opening and closing element of gate valve is flashboard, and the direction of motion and flow direction of flashboard are perpendicular, and gate valve can only make standard-sized sheet and complete
It closes, cannot make adjustments and throttle.Flashboard there are two sealing surface, two sealing surfaces of most common mode slide valve formed wedge shape,
Key groove is different with valve parameter.
When gate valve is closed, sealing surface can rely only on pressure medium to seal, that is, rely only on pressure medium for the close of flashboard
Cover presses to the valve seat of the other side to guarantee the sealing of sealing surface, and here it is self-sealings.Most of gate valve is using forced seal
, i.e., when valve is closed, flashboard is pressed into valve seat by force by external force, to guarantee the leakproofness of sealing surface.
It needs to close main valve before gate valve detachable maintaining at present, gate valve cannot be implemented at any time and repaired, increase maintenance time-consuming,
And need to wait the water in pipe all to reserve after dismantling, water resource largely wastes.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of gate valves easy to repair, solve current gate valve disassembly
It needs to close main valve before maintenance, gate valve cannot be implemented at any time and repaired, it is time-consuming to increase maintenance, and need to wait after dismantling
The problem of water in pipe all reserves, and water resource largely wastes.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of gate valve easy to repair, including
Valve body is provided with valve pit on the right side of the valve body, and the upper and lower ends of the valve inner are fixedly connected to sealing bearing,
The sealing Bearing inner is rotatably connected to rotational valve plate mechanism, and the position between the rotational valve plate mechanism and sealing bearing is set
It is equipped with sealing rubber ring, the top of the valve pit is fixedly connected with valve seat, and the top of the valve seat is provided with valve deck, described
The top of valve deck is provided with seal, and valve rod, the valve rod are run through and be rotatably connected in the middle position of the upper seal
Bottom end sequentially pass through in valve deck and valve seat and extend to inside valve pit, middle position of the upper seal close to top
It is fixedly connected with Thrust nut, the middle position inside the valve deck is provided with the first O-shaped washer, the centre inside the valve deck
Position and be located at the first O-shaped washer below be provided with thrust bearing, the middle position inside the valve deck and be located at thrust shaft
The lower section held is provided with the second O-shaped washer, and the valve rod is located inside valve pit to be fixedly connected with actively at the axle center of one end
Half gear.
Preferably, the rotational valve plate mechanism includes valve plate, and the two sides of the valve plate are fixedly connected to drive shaft, institute
Drive shaft and sealing Bearing inner rotation connection are stated, the middle position of the valve plate is fixedly connected with output semi-circle gear, institute
It states output semi-circle gear and is fixedly connected to confinement block close to the two sides of valve plate.
Preferably, the output semi-circle gear engages connection with driving semi-gear.
Preferably, the valve rod is located at the outer cover above upper seal equipped with handwheel, and the valve stem tip is threadedly coupled
There is fastening nut.
Preferably, the left side of the valve body and the fixation of the right side of valve pit are connected to flange connector repeatedly.
Preferably, the first outer convex block, the first outer convex block are fixedly connected at the top of the bottom of the valve deck and valve seat
Between position be provided with metal corrugated gasket.
Preferably, it is connected between the described first outer convex block by the first bolt-through, the equal spiral shell in both ends of first bolt
Line is connected with the first fixture nut.
Preferably, the top of the valve deck and the bottom of upper seal are fixedly connected to the second outer convex block, and described second
It is connected between outer convex block by the second bolt-through, the upper and lower ends of second bolt are threaded with the second fixed spiral shell
It is female.
(3) beneficial effect
The present invention provides a kind of gate valves easy to repair.Have it is following the utility model has the advantages that
(1), the gate valve easy to repair is fixedly connected to sealing bearing by the upper and lower ends of valve inner, sealing
Bearing inner is rotatably connected to rotational valve plate mechanism, and the position between rotational valve plate mechanism and sealing bearing is provided with seal rubber
Circle, rotational valve plate mechanism include valve plate, and the two sides of valve plate are fixedly connected to drive shaft, drive shaft and sealing Bearing inner
Rotation connection, the middle position of valve plate are fixedly connected with output semi-circle gear, and output semi-circle gear is solid close to the two sides of valve plate
Surely it is connected with confinement block, output semi-circle gear engages connection with driving semi-gear, handwheel rotation is held, so that valve rod drives actively
Half gear and output semi-circle gear engagement rotation, output semi-circle gear drive valve plate to rotate under the left and right of drive shaft, actively
The gear radius of half gear is greater than output semi-circle gear gear radius, has reached realization valve rod and valve plate discrete transmission, reduces
Manual torsion when valve rotation, improves the purpose of the operating characteristics of valve body.
(2), the gate valve easy to repair, before maintenance, rotation hand wheel, so that valve plate is in closed form in valve body
State realizes the repair demolition of gate valve by the first fixture nut of disassembly and the second fixture nut, has reached and traditional maintenance is avoided to need
Main valve is closed, the portability of maintenance is increased, improves maintenance efficiency, while reducing the purpose of the waste of water resource.
Detailed description of the invention
Fig. 1 is the cross-sectional view inside the present invention；
Fig. 2 is the structural schematic diagram at A of the present invention；
Fig. 3 is the structural schematic diagram of rotational valve plate mechanism of the present invention；
Fig. 4 is the structural schematic diagram at B of the present invention；
Fig. 5 is the structural schematic diagram at C of the present invention.
In figure: 1 valve body, 2 valve pits, 3 sealing bearings, 4 rotational valve plate mechanisms, 401 valve plates, 402 drive shafts, 403
Export semi-circle gear, 404 confinement blocks, 5 sealing rubber rings, 6 valve seats, 7 valve decks, seal, 9 valve rods, 10 Thrust nuts, 11 on 8
First O-shaped washer, 12 thrust bearings, 13 second O-shaped washers, 14 driving semi-gears, 15 handwheels, 16 fastening nuts, 17 flanges connect
Fitting, 18 first outer convex blocks, 19 metal corrugated gaskets, 20 first bolts, 21 first fixture nuts, 22 second outer convex blocks, 23
Two bolts, 24 second fixture nuts.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-5 is please referred to, the present invention provides a kind of technical solution: a kind of gate valve easy to repair, including valve body 1, valve body 1
Right side be provided with valve pit 2, the upper and lower ends inside valve body 1 are fixedly connected to sealing bearing 3, seal inside bearing 3
It is rotatably connected to rotational valve plate mechanism 4, the position between rotational valve plate mechanism 4 and sealing bearing 3 is provided with sealing rubber ring 5,
The top of valve pit 2 is fixedly connected with valve seat 6, and the top of valve seat 6 is provided with valve deck 7, and the top of valve deck 7 is provided with sealing
Valve rod 9 is run through and is rotatably connected in the middle position of body 8, upper seal 8, and the bottom end of valve rod 9 is sequentially passed through in valve deck 7 and valve seat
It 6 and extends to inside valve pit 2, upper seal 8 is fixedly connected with Thrust nut 10, valve deck 7 close to the middle position on top
Internal middle position is provided with the first O-shaped washer 11, middle position valve deck 7 inside and under the first O-shaped washer 11
Side is provided with thrust bearing 12, middle position valve deck 7 inside and the lower section of thrust bearing 12 is provided with the second O-shaped washer
13, valve rod 9, which is located at the axle center of 2 inside one end of valve pit, is fixedly connected with driving semi-gear 14.Rotational valve plate mechanism 4 includes
Valve plate 401, the two sides of valve plate 401 are fixedly connected to drive shaft 402, and drive shaft 402 and sealing 3 inner rotation of bearing connect
It connects, the middle position of valve plate 401 is fixedly connected with output semi-circle gear 403, exports semi-circle gear 403 close to the two of valve plate 401
Side is fixedly connected to confinement block 404.It exports semi-circle gear 403 and engages connection with driving semi-gear 14.Valve rod 9 is located at upper sealing
The outer cover of 8 top of body is equipped with handwheel 15, and 9 top of valve rod is threaded with fastening nut 16.The left side of valve body 1 and valve pit
The fixation of 2 right side is connected to flange connector 17 repeatedly.The first evagination is fixedly connected at the top of the bottom of valve deck 7 and valve seat 6
Block 18, the position between the first outer convex block 18 are provided with metal corrugated gasket 19.Pass through the first bolt between first outer convex block 18
20 through connection, and the both ends of the first bolt 20 are threaded with the first fixture nut 21.The top of valve deck 7 and upper seal 8
Bottom be fixedly connected to the second outer convex block 22, by the second bolt 23 through connection, the second spiral shell between the second outer convex block 22
The upper and lower ends of bolt 23 are threaded with the second fixture nut 24.
In use, being fixedly connected to sealing bearing 3 by the upper and lower ends inside valve body 1,3 inner rotation of bearing is sealed
It is connected with rotational valve plate mechanism 4, the position between rotational valve plate mechanism 4 and sealing bearing 3 is provided with sealing rubber ring, rotates valve
Trigger structure 4 includes valve plate 401, and the two sides of valve plate 401 are fixedly connected to drive shaft 402, drive shaft 402 and sealing bearing
The connection of 3 inner rotations, the middle position of valve plate 401 are fixedly connected with output semi-circle gear 403, and output semi-circle gear 403 is close
The two sides of valve plate 401 are fixedly connected to confinement block 404, export semi-circle gear 403 with driving semi-gear 14 and engage connection, hold
Handwheel 15 rotates, so that valve rod 9 drives driving semi-gear 14 and output 403 engagement rotation of semi-circle gear, exports semi-circle gear 403
Valve plate 401 is driven to rotate under the left and right of drive shaft 402, the gear radius of driving semi-gear 14 is greater than output semi-circle gear
403 gear radius have reached realization valve rod and valve plate discrete transmission, reduce manual torsion when valve rotation, improve
The purpose of the operating characteristics of valve body.Before maintenance, rotation hand wheel 15, so that valve plate 401 is in closed state in valve body 1,
By the first fixture nut 21 of disassembly and the second fixture nut 24, realizes the repair demolition of gate valve, reached and avoided traditional maintenance
It needs to close main valve, increases the portability of maintenance, improve maintenance efficiency, while reducing the purpose of the waste of water resource.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions.By sentence " element limited including one ..., it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element ".
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of gate valve easy to repair, including valve body (1), it is characterised in that: after being provided with valve on the right side of the valve body (1)
Slot (2), the internal upper and lower ends of the valve body (1) are fixedly connected to sealing bearing (3), turn inside the sealing bearing (3)
Dynamic to be connected with rotational valve plate mechanism (4), the position between the rotational valve plate mechanism (4) and sealing bearing (3) is provided with sealing
The top of rubber ring (5), the valve pit (2) is fixedly connected with valve seat (6), and the top of the valve seat (6) is provided with valve deck
(7), the top of the valve deck (7) is provided with seal (8), and the middle position of the upper seal (8) is run through and rotates company
It is connected to valve rod (9), the bottom end of the valve rod (9) sequentially passes through in valve deck (7) and valve seat (6) and extends in valve pit (2)
Portion, the upper seal (8) are fixedly connected with Thrust nut (10) close to the middle position on top, valve deck (7) inside
Middle position is provided with the first O-shaped washer (11), the internal middle position of the valve deck (7) and is located at the first O-shaped washer (11)
Lower section be provided with thrust bearing (12), the internal middle position of the valve deck (7) and being located at below thrust bearing (12) is set
It is equipped with the second O-shaped washer (13), the valve rod (9), which is located at the axle center of the internal one end of valve pit (2), to be fixedly connected with actively
Half gear (14).
2. one kind according to claim 1 gate valve easy to repair, it is characterised in that: rotational valve plate mechanism (4) packet
Include valve plate (401), the two sides of the valve plate (401) are fixedly connected to drive shaft (402), the drive shaft (402) with
The connection of bearing (3) inner rotation is sealed, the middle position of the valve plate (401) is fixedly connected with output semi-circle gear (403), institute
It states output semi-circle gear (403) and is fixedly connected to confinement block (404) close to the two sides of valve plate (401).
3. one kind according to claim 2 gate valve easy to repair, it is characterised in that: the output semi-circle gear (403)
Connection is engaged with driving semi-gear (14).
4. one kind according to claim 1 gate valve easy to repair, it is characterised in that: the valve rod (9) is located at upper sealing
Outer cover above body (8) is equipped with handwheel (15), and valve rod (9) top is threaded with fastening nut (16).
5. one kind according to claim 1 gate valve easy to repair, it is characterised in that: the left side of the valve body (1) and valve
The right side of slot (2) fixation behind the door is connected to flange connector (17) repeatedly.
6. one kind according to claim 1 gate valve easy to repair, it is characterised in that: the bottom of the valve deck (7) and valve
It is fixedly connected to the first outer convex block (18) at the top of seat (6), the position between the first outer convex block (18) is provided with metal wave
Shape gasket (19).
7. one kind according to claim 6 gate valve easy to repair, it is characterised in that: between the first outer convex block (18)
By the first bolt (20) through connection, the both ends of first bolt (20) are threaded with the first fixture nut (21).
8. one kind according to claim 1 gate valve easy to repair, it is characterised in that: the top of the valve deck (7) and upper
The bottom of seal (8) is fixedly connected to the second outer convex block (22), passes through the second bolt between the second outer convex block (22)
(23) through connection, the upper and lower ends of second bolt (23) are threaded with the second fixture nut (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811047567.9A CN108999989A (en) | 2018-09-10 | 2018-09-10 | A kind of gate valve easy to repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811047567.9A CN108999989A (en) | 2018-09-10 | 2018-09-10 | A kind of gate valve easy to repair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108999989A true CN108999989A (en) | 2018-12-14 |
Family
ID=64592159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811047567.9A Pending CN108999989A (en) | 2018-09-10 | 2018-09-10 | A kind of gate valve easy to repair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108999989A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07293711A (en) * | 1994-04-19 | 1995-11-10 | Eisai Co Ltd | Butterfly valve |
| CN2321983Y (en) * | 1997-12-19 | 1999-06-02 | 长沙市阀门厂 | Butterfly valve capable of preventing sand from entering bearing |
| CN2748718Y (en) * | 2004-06-02 | 2005-12-28 | 余守明 | Gear type high torque large-scale butterfly valve |
| CN202531871U (en) * | 2012-03-26 | 2012-11-14 | 浙江欧电阀门制造有限公司 | Soft sealing non-rising rod gate valve |
| CN205877228U (en) * | 2016-07-28 | 2017-01-11 | 浙江汉威阀门制造有限公司 | Carbon steel stop valve |
| CN207830701U (en) * | 2018-01-17 | 2018-09-07 | 山东沪工阀门制造股份有限公司 | A kind of flat gate valve |
-
2018
- 2018-09-10 CN CN201811047567.9A patent/CN108999989A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07293711A (en) * | 1994-04-19 | 1995-11-10 | Eisai Co Ltd | Butterfly valve |
| CN2321983Y (en) * | 1997-12-19 | 1999-06-02 | 长沙市阀门厂 | Butterfly valve capable of preventing sand from entering bearing |
| CN2748718Y (en) * | 2004-06-02 | 2005-12-28 | 余守明 | Gear type high torque large-scale butterfly valve |
| CN202531871U (en) * | 2012-03-26 | 2012-11-14 | 浙江欧电阀门制造有限公司 | Soft sealing non-rising rod gate valve |
| CN205877228U (en) * | 2016-07-28 | 2017-01-11 | 浙江汉威阀门制造有限公司 | Carbon steel stop valve |
| CN207830701U (en) * | 2018-01-17 | 2018-09-07 | 山东沪工阀门制造股份有限公司 | A kind of flat gate valve |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181214 |