CN107620809A - The installation method of stop valve and its valve rod and valve body - Google Patents
The installation method of stop valve and its valve rod and valve body Download PDFInfo
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- CN107620809A CN107620809A CN201610566861.5A CN201610566861A CN107620809A CN 107620809 A CN107620809 A CN 107620809A CN 201610566861 A CN201610566861 A CN 201610566861A CN 107620809 A CN107620809 A CN 107620809A
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Abstract
The invention discloses a kind of stop valve and its installation method of valve rod and valve body, the valve body includes valve body and valve seat, and the valve body and the valve seat are Split type structure；The upper end of the valve rod has installation endoporus, and the valve rod is step axle construction, and its upper end is miner diameter end, and its lower end is bigger diameter end；The valve body inner chamber has step surface directed downwardly, its can with the connecting portion of the bigger diameter end and the miner diameter end against；The installation method comprises the steps：Valve rod is pressed into from the lower end of the valve body, axial location of the valve rod in the valve body inner chamber is adjusted by the installation endoporus of the valve rod upper end；Load seal from the valve body upper end, the seal is coated at the valve rod；Load the valve seat from the lower end of the valve body and fix both.The assembly method can eliminate the outbound hidden danger of valve rod, improve the safety and reliability of stop valve work.
Description
Technical field
The present invention relates to valve field, more particularly to a kind of stop valve and its valve rod and valve body
Installation method.
Background technology
Within air-conditioning systems, stop valve is mainly used in connecting indoor set and outdoor unit.
Fig. 1 is refer to, Fig. 1 is a kind of existing structural representation of typical stop valve.
The stop valve includes valve body 1 ' and valve rod 2 '；Wherein, the left end of valve body 1 ' offers first
Passage 11 ', lower end offer second channel 12 ', and valve body 1 ' is interior to be provided with valve seat 3 '；Valve rod 2 '
In the inner chamber of valve body 1 ', valve rod 2 ' is above provided with external screw thread, on the inner chamber wall of valve body 1 '
The internal thread being engaged provided with the external screw thread with valve rod 2 ', when being rotated so as to valve rod 2 ', in screw thread
Moved up and down in the presence of pair in the inner chamber of valve body 1 ', be in contact or separate with valve seat 3 ', so as to
Close or connect first passage 11 ' and second channel 12 '.
Before air conditioner installation, valve rod 2 ' contacts sealing with valve seat 3 ', makes first passage 11 ' and second
Passage 12 ' is closed, i.e., disconnects the fluid passages such as refrigerant, after air conditioner installation, then
Rotation valve rod 2 ' moves up, and it is separated with valve seat 3 ', so that first passage 11 ' and second channel
12 ' are in connected state, i.e., connect the fluid passages such as refrigerant.
Wherein, O-ring 4 ' is provided between valve body 1 ' and valve rod 2 ', to prevent valve body 1 ' and valve
Coolant leakage between bar 2 '.
Wherein, valve rod 2 ' is carried out spacing by back-up ring 5 ', and the extreme position that valve rod 2 ' moves up is kept off
Enclose the position at 5 ' places.
In the lump with reference to figure 2, Fig. 2 shows that stop valve valve rod assembles with valve body in Fig. 1
Step schematic diagram.
First O-ring 4 ' is sleeved in the mounting groove of the periphery of valve rod 2 '；
Valve rod 2 ' is pressed into from the upper end of valve body 1 ' again, if necessary, using in the upper end of valve rod 2 '
Hexagon ring rotation valve rod 2 ' moves down it, is easy to subsequently load back-up ring 5 '；
Finally back-up ring 5 ' is loaded in the groove of the inwall of valve body 1 '.
Assembling and respective outer side edges form, valve rod 2 ' of the above-mentioned stop valve valve rod 2 ' with valve body 1 ' are determined
Position fully relies on back-up ring 5 ', if the neglected loading of back-up ring 5 ' or installation are not in place, valve rod 2 ', which exists, to fly out
The risk gone, so as to there is potential safety hazard.
In view of this, how existing structure is improved, eliminates the outbound hidden danger of valve rod,
Safety and reliability is improved, is the current technical issues that need to address of those skilled in the art.
The content of the invention
, should it is an object of the invention to provide a kind of stop valve and its installation method of valve rod and valve body
Assembly method can eliminate the outbound hidden danger of valve rod, improve stop valve work security and can
By property.
In order to solve the above technical problems, the present invention provides a kind of installation of stop valve valve rod and valve body
Method, the valve body include valve body and valve seat, and the valve body and the valve seat are split knot
Structure；
The upper end of the valve rod has installation endoporus, and the valve rod is step axle construction, its upper end
For miner diameter end, its lower end is bigger diameter end；
The valve body inner chamber has step surface directed downwardly, and it can be with the bigger diameter end and described
The connecting portion of miner diameter end against；
The installation method comprises the steps：
Valve rod is pressed into from the lower end of the valve body, passes through the installation of the valve rod upper end
Endoporus adjusts axial location of the valve rod in the valve body inner chamber；
Load seal from the valve body upper end, the seal is coated at the valve rod；
Load the valve seat from the lower end of the valve body and fix both.
As above, the valve body of the stop valve is set to the valve body and valve seat of Split type structure, and valve rod is upper
Small lower big step axle construction, when valve rod is installed with valve body, valve rod is pressed into from the lower end of valve body,
Valve seat is installed again afterwards, wherein, the inner chamber of valve body has downward step surface, the step surface
Can with the connecting portion of valve rod bigger diameter end and miner diameter end against, so, can either limit valve rod to
The distance of upper movement, and can is enough spacing to valve rod progress, prevents valve rod from flying from the inner chamber of valve body
Go out；Wherein, the upper end of valve rod has installation endoporus, after valve rod is from the press-in of the lower end of valve body,
Axial location of the valve rod in valve body inner chamber can be adjusted by the installation endoporus of valve rod upper end so that
Installation is more convenient, also allows for the installation of follow-up seal and valve seat.With in the prior art completely according to
The structure and mounting means positioned by back-up ring to valve rod is compared, scheme energy provided by the invention
It is enough to evade the outbound risk of valve rod completely, improve the safety and reliability of stop valve operation.
The seal is fixedly mounted with the valve body.
The upper end of the valve body has the first annular groove for installing the seal；
After loading the seal from the valve body upper end, also load from the valve body upper end
Compressing member, the seal is pressed between the first annular groove and the valve rod.
The compressing member is fixedly mounted with the valve body.
The compressing member is fixed on the valve body by way of riveting.
The upper end of the valve body also has the second annular groove for installing the compressing member, and it is located at
The first annular groove upper end and connected with the first annular groove；Second annular groove it is straight
Footpath is more than the diameter of the first annular groove；After the compressing member loads second annular groove,
The perisporium upper end of second annular groove is bent inwards with compressing member described in riveting.
After being pressed into the valve rod from the valve body lower end, by the institute for rotating the valve rod upper end
Stating installation endoporus makes the upper end of the valve rod stretch out the upper end of the valve body.
The installation endoporus is inner polygon pore structure.
The present invention also provides a kind of stop valve, including valve body and valve rod；The valve body includes valve master
Body and valve seat, the valve rod are located at the inner chamber of the valve body；The valve body and the valve seat
For Split type structure；The valve rod is step axle construction, and its upper end is miner diameter end, and its lower end is big
Footpath end；The inner chamber of the valve body has step surface directed downwardly, its can with the bigger diameter end and
The connecting portion of the miner diameter end against；The upper end of the valve rod has installation endoporus, with described
Valve rod adjusts the valve rod in the axial direction of the valve body inner chamber after being pressed into from the valve body lower end
Position；Seal is provided between the valve rod upper end and the valve body, the seal is fixed
In the valve body.
The structure of the stop valve can equally evade the outbound risk of valve rod, improve security and
Reliability；And the installation endoporus of valve rod upper end design is easy to the installation of stop valve valve rod and valve body.
The upper end of the valve body has the first annular groove for installing the seal, the valve master
Body is also installed with compressing member, and the seal is pressed in into the first annular groove and institute
State between valve rod.
Brief description of the drawings
Fig. 1 is a kind of existing structural representation of typical stop valve；
Fig. 2 is to show stop valve valve rod and the step schematic diagram of valve body assembling in Fig. 1；
Fig. 3 is a kind of structural representation of specific embodiment of stop valve provided by the present invention；
Fig. 4 a to Fig. 4 f respectively illustrate stop valve valve rod and valve body installation side in specific embodiment
Each step schematic diagram of method.
Description of reference numerals in Fig. 1 and Fig. 2：
Valve body 1 ', first passage 11 ', second channel 12 ', valve rod 2 ', valve seat 3 ', O-ring
4 ', back-up ring 5 '；
Description of reference numerals in Fig. 3 to Fig. 4 f：
Valve body 10, valve body 101, first annular groove 111, the second annular groove 112, step surface
113, valve seat 102, first passage 11, second channel 12；
Valve rod 20, bigger diameter end 21, miner diameter end 22, endoporus 201, taper surface 202 are installed；
Bonnet 30, seal 40, compressing member 50, fill structure 60, adapter 70.
Embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the accompanying drawings
The present invention is described in further detail with embodiment.
It is succinct for ease of understanding and describing, below in conjunction with the installation of stop valve and its valve rod and valve body
Method illustrates that beneficial effect is not repeated to discuss in the lump.
Fig. 3 is refer to, Fig. 3 is a kind of structure of specific embodiment of stop valve provided by the present invention
Schematic diagram.
In the embodiment, as illustrated, stop valve includes valve body 10 and valve rod 20；Wherein,
Valve body 10 includes the valve body 101 and valve seat 102 of Split type structure；The left end of valve body 101 is opened
Provided with first passage 11, lower end offers second channel 12, and valve seat 102 is located at valve body 101
It is internal；Valve rod 20 is located at the inner chamber of valve body 101, for being in contact or separating with valve seat 102,
So that first passage 11 disconnects or connected with second channel 12.
Generally, external screw thread is provided with valve rod 20, the wall of the inner chamber of valve body 101 is provided with
The internal thread being engaged with the external screw thread of valve rod 20；When valve rod 20 rotates, in internal thread and outside
In the presence of screw thread, valve rod 20 can move up and down in the inner chamber of valve body 101, realization and valve
Seat 102 contact or separation, so as to realize the connection of first passage 11 and second channel 12 or
Disconnect.
Certainly, the stop valve also is provided with the filling structure 60 for coolant charging-up.
Please also refer to Fig. 4 a, in the embodiment, valve rod 20 is step axle construction, its upper end
For miner diameter end 22, its lower end is bigger diameter end 21, and offers installation in the upper end of valve rod 20
Endoporus 201；The inner chamber of valve body 101 has step surface 113 directed downwardly, the step surface 113
Can with the bigger diameter end 21 of valve rod 20 and the connecting portion of miner diameter end 22 against.
The valve rod 20 of the stop valve and the installation method of valve body 10 comprise the steps：
First, valve rod 20 is pressed into from the lower end of valve body 101, passes through the peace of the upper end of valve rod 20
Endoporus 201 is filled to adjust axial location of the valve rod 20 in the inner chamber of valve body 101；
Again, load seal 40 from the upper end of valve body 101, seal 40 is coated at valve rod
20；Load valve seat 102 from the lower end of valve body 101, and by valve seat 102 and valve body 101
It is fixed.
Wherein, seal 40 is used for circumferential seal valve rod 20 and valve body 101, to prevent from being situated between
Matter overflows to the outside of valve body 101 from the inner chamber of valve body 101.
Seal 40 can select O-ring, can select elastomeric element in practice, can also
From non-elastic component.
Need exist for illustrating, in the installation method, valve rod 20 is from valve body 101
Lower end loads, so valve seat 102 must be installed again after valve rod 20 loads valve body 101；
Seal 40 be for circumferential seal valve rod 20 and valve body 101, so, seal 40
It is also required to install, still, seal 40 and valve seat again after valve rod 20 loads valve body 101
102 installation and non-interference, therefore, in the installation method, valve rod 20 loads valve body
After 101, the erection sequence of valve seat 102 and seal 40 is not limited, that is to say, that load
After valve rod 20, seal 40 both can be first installed, then valve seat 102 is installed, can also first be installed
Valve seat 102, then seal 40 is installed.
As above, the valve body 10 of the stop valve is set to the valve body 101 and valve seat 102 of Split type structure,
Valve rod 20 is up-small and down-big step axle construction, when valve rod 20 is installed with valve body 10, valve rod
20 are pressed into from the lower end of valve body 101, install valve seat 102 again afterwards, wherein, valve body 101
Inner chamber there is downward step surface 113, the step surface 113 can with valve rod bigger diameter end 21 with
The connecting portion of miner diameter end 22 against, so, the distance that valve rod 20 moves up can either be limited,
And can is enough to be carried out spacing to valve rod 20, prevents valve rod 20 from being flown out from the inner chamber of valve body 101；
Wherein, the upper end of valve rod 20 has installation endoporus 201, when valve rod 20 is from valve body 101
After the press-in of lower end, valve rod 20 can be adjusted in valve master by the installation endoporus 201 of the upper end of valve rod 20
The axial location of the inner chamber of body 101 so that installation is more convenient, also allows for follow-up seal 40 and valve
The installation of seat 102.With fully rely in the prior art structure that back-up ring positioned to valve rod and
Mounting means is compared, and scheme provided by the invention can evade the outbound risk of valve rod completely,
Improve the safety and reliability of stop valve operation.
With reference to Fig. 4 a to Fig. 4 f, stop valve valve rod 20 and valve body in specific embodiment are introduced
10 installation method, Fig. 4 a to Fig. 4 f respectively illustrate in specific embodiment stop valve valve rod with
Each step schematic diagram of valve body installation method.
As is shown in fig. 4 a, during installation, first valve rod 20 is pressed into from the lower end of valve body 101,
Arrow represents the installation direction of valve rod 20 in figure.
After valve rod 20 being pressed into from the lower end of valve body 101, it usually needs adjustment valve rod 20 is in valve master
The axial location of the inner chamber of body 101, that is, the vertical position illustrated, to facilitate follow-up parts
Installation, after adjustment, the structure of valve rod 20 and valve body 101 is as shown in fig 4b.
Specifically, can be made by the rotation valve rod 20 of installation endoporus 201 of the upper end of valve rod 20
Valve rod 20 moves to appropriate location on the inner chamber of valve body 101, and appropriate location here refers to neither
The installing space of follow-up valve seat 102 is influenceed, and does not influence the installation of follow-up seal 40.
More specifically, the upper end of valve rod 20 is set to stretch out the upper end of valve body 101 by rotating.
It is pointed out that after stop valve assembling, in, pass through the upper end of valve rod 20
Installation endoporus 201 carrys out rotation valve rod 20, makes valve rod 20 upper and lower in the inner chamber of valve body 101
It is mobile, realize opening or closing for stop valve.
In specific scheme, the installation endoporus 201 of the upper end of valve rod 20 is set to inner polygon hole knot
Structure, preferably inner hexagonal hole structure, naturally it is also possible to be square hole structure or tri-angle-holed knot
The pore structure of structure or other irregular shapes.
Wherein, the lower end of valve rod 20 can set aperture, as internal point when processing, to valve
The installation of bar 20 is without influence.
Then, as shown in fig. 4c, valve seat 102 is loaded from the lower end of valve body 101, and by valve
Seat 102 is fixed with valve body 101, can be fixed by the way of welding, not only easy but also reliable.
In practice also can be in the lump by the adapter 70 connected with second channel 12 and the welded and installed of valve seat 102.
Certainly, adapter 70 is subsequently installed also possible again.
Then, as shown in figure 4d, load seal 40 from the upper end of valve body 101, make close
Sealing 40 is coated at valve rod 20, that is to say, that seal 40 is arranged on valve rod 20 and valve master
Between body 101.
In specific scheme, seal 40 and valve body 101 are fixedly mounted, will be sealed
Part 40 is fixed on valve body 101, so, on valve rod 20 is in the inner chamber of valve body 101
During lower motion, seal 40 remains static all the time, will not with the motion of valve rod 20 and
Motion, abrasion or flange etc. caused by seal 40 moves with valve rod 20 can be alleviated and asked
Topic, seal 40 is avoided the problem of caused coolant media leakage, to improve stop valve in moving
Sealing.
Further, since seal 40 enters without being moved with valve rod 20 in valve body 101
The space for considering seal 40 can not had to during row design, without opening up on valve rod 20
The groove of seal is accommodated, the design and production cost of stop valve can be reduced.
Wherein, seal 40 can be fixed by compressing member 50.
Specifically, the upper end of valve body 101 offers the first annular groove of installation seal 40
111 (being shown in Fig. 4 a), after seal 40 loads from the upper end of valve body 101, by first
The support of annular groove 111 accommodates, and then loads compressing member 50 from the upper end of valve body 101, will
Seal 40 is pressed between first annular groove 111 and valve rod 20.
Wherein, compressing member 50 is fixedly mounted with valve body 101, specifically, can pass through riveting
Mode compressing member 50 and valve body 101 are fixed.
More specifically, offer what is connected with first annular groove 111 in the upper end of valve body 101
Second annular groove 112 (being shown in Fig. 4 a), to accommodate compressing member 50, it is clear that second
Annular groove 112 is located at the upper end of first annular groove 111, in the concrete scheme, the second annular groove
112 diameter is more than the diameter of first annular groove 111.
Structure is as shown in fig 4e after loading seal 40 and compressing member 50.
After compressing member 50 loads, the perisporium upper end of the second annular groove 112 is bent inwards with riveting
Compressing member 50, as shown in fig. 4f, so as to which seal 40 is fixed on valve body 101.
In concrete scheme described above, valve seat 102 is first installed, it is rear that seal 40 is installed, should
Work as understanding, seal 40 also can be first installed, then valve seat 102 is installed.
After seal 40 and compressing member 50 assemble, bonnet 30 is installed in the upper end of valve body 101,
For waterproof and dustproof.
As it was previously stated, valve rod 20 moves up the step surface 113 by valve body 101 to limit,
When i.e. valve rod 20 is in clear way valve state, the bigger diameter end 21 of valve rod 20 and the company of miner diameter end 22
Socket part and step surface 113 against；In specific scheme, the step of valve rod 20 and valve body 101
The circumferential seal of face 113 is against can avoid shadow of the clear way valve state seal 40 by pressure medium
Ring, reduce the pressure-bearing pressure of seal 40, valve rod 20 and valve body 101 can also be increased
Sealing.
Preferably, the bigger diameter end 21 of valve rod 20 is set to taper surface with the connecting portion of miner diameter end 22
202, make valve rod 20 close by the circumferential line of step surface 113 of taper surface 202 and valve body 101
Envelope against.
In practical application, stop valve is shown in a fully open operation more, as it was previously stated, during stop valve standard-sized sheet,
Realized and sealed with the step surface 113 of valve body 101 by the taper surface 202 of valve rod 20, so,
The bonnet 30 for the stop valve that the present embodiment provides is secondary close without playing as in the prior art
The effect of envelope, therefore, in the program, bonnet 30 is only used as waterproof and dustproof use, correspondingly,
Plastics etc. can be selected in terms of material, is not limited by sealing function, cost can be reduced.
Above to a kind of stop valve provided by the present invention and its installation method of valve rod and valve body
It is described in detail.Principle and embodiment party of the specific case used herein to the present invention
Formula is set forth, the explanation of above example be only intended to help the method for understanding the present invention and
Its core concept.It should be pointed out that for those skilled in the art, not
On the premise of departing from the principle of the invention, some improvement and modification can also be carried out to the present invention, this
A little improvement and modification are also fallen into the protection domain of the claims in the present invention.
Claims (10)
1. the installation method of stop valve valve rod and valve body, the valve body (10) includes valve body
(101) and valve seat (102), it is characterised in that the valve body (101) and the valve seat
(102) it is Split type structure；
The upper end of the valve rod (20) has installation endoporus (201), and the valve rod (20) is
Step axle construction, its upper end are miner diameter end (22), and its lower end is bigger diameter end (21)；
Valve body (101) inner chamber has step surface directed downwardly (113), its can with it is described
The connecting portion of bigger diameter end (21) and the miner diameter end (22) against；
The installation method comprises the steps：
Valve rod (20) is pressed into from the lower end of the valve body (101), passes through the valve rod
(20) the installation endoporus (201) of upper end adjusts the valve rod (20) in the valve body
(101) axial location of inner chamber；
Load seal (40) from the valve body (101) upper end, make the seal (40)
It is coated at the valve rod (20)；Load the valve seat (102) from the lower end of the valve body (101)
And both are fixed.
2. installation method according to claim 1, it is characterised in that the seal
(40) it is fixedly mounted with the valve body (101).
3. installation method according to claim 2, it is characterised in that the valve body
(101) upper end has the first annular groove (111) for installing the seal (40)；
After loading the seal (40) from the valve body (101) upper end, also from described
Valve body (101) upper end loads compressing member (50), and the seal (40) is pressed in
Between the first annular groove (111) and the valve rod (20).
4. installation method according to claim 3, it is characterised in that the compressing member
(50) it is fixedly mounted with the valve body (101).
5. installation method according to claim 4, it is characterised in that the compressing member
(50) valve body (101) is fixed on by way of riveting.
6. installation method according to claim 5, it is characterised in that the valve body
(101) upper end also has the second annular groove (112) for installing the compressing member (50), its
Connected positioned at first annular groove (111) upper end and with the first annular groove (111)；
The diameter of second annular groove (112) is more than the diameter of the first annular groove (111)；
After the compressing member (50) loads second annular groove (112), by second annular groove
(112) perisporium upper end bends inwards with compressing member described in riveting (50).
7. according to the installation method described in claim any one of 1-6, it is characterised in that from institute
After stating valve body (101) lower end press-in valve rod (20), by rotating the valve rod (20)
The installation endoporus (201) of upper end makes the upper end of the valve rod (20) stretch out the valve body
(101) upper end.
8. according to the installation method described in claim any one of 1-6, it is characterised in that described
It is inner polygon pore structure to install endoporus (201).
9. stop valve, including valve body (10) and valve rod (20)；The valve body (10) includes
Valve body (101) and valve seat (102), the valve rod (20) are located at the valve body (101)
Inner chamber；Characterized in that, the valve body (101) and the valve seat (102) are split
Structure；The valve rod (20) is step axle construction, and its upper end is miner diameter end (22), its lower end
For bigger diameter end (21)；The inner chamber of the valve body (101) has step surface directed downwardly (113),
It can with the connecting portion of the bigger diameter end (21) and the miner diameter end (22) against；It is described
The upper end of valve rod (20) has installation endoporus (201), with the valve rod (20) from described
The valve rod (20) is adjusted in the valve body (101) after the press-in of valve body (101) lower end
The axial location of inner chamber；It is provided between valve rod (20) upper end and the valve body (101)
Seal (40), the seal (40) are fixed on the valve body (101).
10. stop valve according to claim 9, it is characterised in that the valve body (101)
Upper end there is the first annular groove (111) for installing the seal (40), the valve body
(101) compressing member (50) is also installed with, the seal (40) is pressed in institute
State between first annular groove (111) and the valve rod (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566861.5A CN107620809A (en) | 2016-07-15 | 2016-07-15 | The installation method of stop valve and its valve rod and valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566861.5A CN107620809A (en) | 2016-07-15 | 2016-07-15 | The installation method of stop valve and its valve rod and valve body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107620809A true CN107620809A (en) | 2018-01-23 |
Family
ID=61087773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610566861.5A Pending CN107620809A (en) | 2016-07-15 | 2016-07-15 | The installation method of stop valve and its valve rod and valve body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107620809A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022012303A1 (en) * | 2020-07-15 | 2022-01-20 | 浙江盾安人工环境股份有限公司 | Stop valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180064A (en) * | 2013-05-24 | 2014-12-03 | 浙江三花股份有限公司 | Stop valve |
| CN204437291U (en) * | 2015-01-11 | 2015-07-01 | 赵德鸿 | Stop valve |
-
2016
- 2016-07-15 CN CN201610566861.5A patent/CN107620809A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180064A (en) * | 2013-05-24 | 2014-12-03 | 浙江三花股份有限公司 | Stop valve |
| CN204437291U (en) * | 2015-01-11 | 2015-07-01 | 赵德鸿 | Stop valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022012303A1 (en) * | 2020-07-15 | 2022-01-20 | 浙江盾安人工环境股份有限公司 | Stop valve |
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Application publication date: 20180123 |
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| RJ01 | Rejection of invention patent application after publication |