CN207486062U - Shut-off valve - Google Patents
Shut-off valve Download PDFInfo
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- CN207486062U CN207486062U CN201721446788.4U CN201721446788U CN207486062U CN 207486062 U CN207486062 U CN 207486062U CN 201721446788 U CN201721446788 U CN 201721446788U CN 207486062 U CN207486062 U CN 207486062U
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- valve
- shut
- union nut
- extension
- lug boss
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Abstract
Shut-off valve, it is characterised in that：Including valve body and from outwardly extending first extension of the valve body, take over and be fixedly connected by union nut with first extension；First extension is provided with auxiliary section, the union nut is provided with press keeping section, the press keeping section is provided with the first lug boss, described take over is provided with expansion mouth, when the union nut is in tightening state, the press keeping section, the expansion mouth, the auxiliary section abut successively, and the union nut is abutted against by first lug boss with the expansion mouth.Shut-off valve provided by the utility model by setting the first lug boss on union nut, can effectively reduce the contact surface of sealing position, so as to reduce packing torque, improve sealing performance.
Description
Technical field
The utility model is related to valve technology field, more particularly to a kind of shut-off valve for refrigeration system.
Background technology
Within air-conditioning systems, mainly including components such as compressor, indoor heat exchanger, outdoor heat exchanger, shut-off valves,
In, shut-off valve is mainly used for connecting indoor unit and outdoor unit, plays the role of controlling refrigerant flow break-make.
It please refers to Fig.1, Fig. 1 is a kind of structure diagram of typical shut-off valve of background technology.
Shut-off valve is mounted on outdoor unit, which includes valve body 1 ' and valve rod 2 '；Wherein, the left end setting of valve body 1 '
There is the first extension 14', and first passage 11 ' is opened up in the first extension 14', lower end offers second channel 12 '；Valve rod 2 '
In the inner cavity of valve body 1 ', valve rod 2 ' is above provided with external screw thread, and the inner cavity wall surface of valve body 1 ' is equipped with the outer spiral shell with valve rod 2 '
Line matched internal thread when being rotated so as to valve rod 2 ', moves up and down under the action of screw thread pair in 1 ' inner cavity of valve body, so as to
Close or connect first passage 11 ' and second channel 12 '.
Before air conditioner installation, rotation valve rod 2 ' moves down, so that first passage 11 ' and second channel 12 ' are closed,
The fluid passages such as refrigerant are disconnected, after air conditioner installation, valve rod 2 ' is rotated further by and moves up, so that first passage 11 ' and second leads to
Road 12 ' is in connected state, i.e., connects the fluid passages such as refrigerant.
With shown in Fig. 1, second channel 12 ' is outdoor system wing passage, first passage 11 ' is indoor heating system wing passage,
Outer end is equipped with the union nut 3 ' being connect with indoor unit.
In addition, the shut-off valve is also provided with filling structure in valve body right end, in order to fill refrigerant into air conditioner.Specifically
Ground, shut-off valve are additionally provided with the second extension 13', which includes the valve inside 4 ' being arranged in the second extension 13',
Refrigerant is filled into air conditioner will pass through it.It is of course also possible to the setting filling structure not on stop valve body, and will filling
Structure is separately set.
Air-conditioning system take over 6' is connected on shut-off valve by union nut 3', and take over 6' has expansion mouth 61', union nut
3' is correspondingly arranged on auxiliary section 141', by screwing union nut 3', will take over 6' with press keeping section 31', the first extension 14'
It tightly presses on the first extension 14', to realize fixed and sealing.
In the revealed technical solution of background technology, press keeping section 31' and auxiliary section 141' are ramp structure, the two with
The fitted seal of expansion mouth 61' is close to face sealing state, therefore packing torque is big, and more difficult to control, is operated with adjustable wrench
When, bad valve body or union nut are easily twisted, leads to coolant leakage.
Therefore, a kind of shut-off valve for improving sealing performance how is designed or on the basis of sealing performance is improved into one
Walk reliability, it is not easy to twist the shut-off valve of bad union nut, be the technical issues of those skilled in the art are urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of shut-off valve, can overcome union nut and extension and be between taking over
The defects of approximate face sealing causes packing torque big, provide a kind of shut-off valve that can improve sealing performance.For this purpose, this practicality is new
Type uses following technical scheme：
Shut-off valve, it is characterised in that：Including valve body and from outwardly extending first extension of the valve body, take over logical
Union nut is crossed to be fixedly connected with first extension；
First extension is provided with auxiliary section, and the union nut is provided with press keeping section, and the press keeping section is provided with
First lug boss, described take over are provided with expansion mouth, the press keeping section, described when the union nut is in tightening state
Expansion mouth, the auxiliary section abut successively, and the union nut is abutted against by first lug boss with the expansion mouth.
Shut-off valve provided by the utility model by setting the first lug boss on union nut, can effectively reduce sealing
The contact surface at position, so as to reduce packing torque.
The union nut is provided with internal thread, and first extension is provided with external screw thread, and the two passes through thread fitting
It is fixed.
The cross sectional shape of first lug boss is arch, triangle or trapezoidal.
The second lug boss is additionally provided with, and be configured on the auxiliary section of first extension：When union nut is in rotation
During tight state, first lug boss and second lug boss contradict the outer edge surface and inner edge surface in the expansion mouth respectively.
The cross sectional shape of second lug boss is arch, triangle or trapezoidal.
On the basis of above technical scheme, following improvement can also be further made：
The union nut further includes operation portion, and the section of the operation portion is in regular hexagon.
The width to edge lengths and the operation portion of the operation portion meets relationship below：
1/2B ＞ A ＞ 1/10B；
Wherein, B is to edge lengths, and A is width.
The width value of the operation portion meets：A≥2mm.
The operation portion of butt tube nut makes above-mentioned optimization, can prevent installation personnel during union nut is tightened
Torque value is excessive and screw thread is caused to skid or destroy, and eliminates the hidden danger of coolant leakage and union nut failure.
The shut-off valve that another embodiment of the utility model provides, by setting the first lug boss on union nut, and
The second lug boss is set on the first extension simultaneously, it is possibility to have effect reduces the contact surface of sealing position, so as to reduce sealing
Torque improves sealing performance.
Description of the drawings
Fig. 1 is a kind of structure diagram of typical shut-off valve of background technology；
Fig. 2 provides the structure diagram of first embodiment shut-off valve for the utility model；
Fig. 3 is Fig. 2A portions enlarged drawing；
Fig. 4 provides the structure partial enlarged drawing of second embodiment shut-off valve for the utility model；
Fig. 5 provides the union nut structure diagram of shut-off valve for the utility model；
Fig. 6 is the left view of Fig. 5.
Specific embodiment
In order to which those skilled in the art is made to more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.Present embodiment is merely for convenience to disclose the interior of the utility model
Hold, be not meant to that the utility model can only use the structure recorded in present embodiment.Those skilled in the art can be at this
Under the technical inspiration that embodiment provides, equivalent embodiment is obtained, these equivalent embodiments should also be as belonging to this reality
Within novel protection domain.
It please refers to Fig.2, Fig. 3, wherein, Fig. 2 is that the stop valve structure of first embodiment provided by the utility model shows
It is intended to, Fig. 3 is the enlarged drawing in the A portions of Fig. 2.
Shut-off valve includes valve body 1 and valve rod 2；Wherein, valve body 1 has from the outwardly extending tubular matrix of ontology, forms the
One extension 14 and the second extension 13, wherein the inside of the first extension 14 forms first passage 11, the second extension 13
Inside filling device 4 is installed.It is of course also possible to be not provided with the second extension 13, and filling device 4 is mounted on refrigeration and is
In the pipeline of system.
Valve rod 2 is set on the inner cavity of valve body 1, can move up and down to be turned on and off valve port, is opened to be in shut-off valve
Or closed state.In general, valve rod 2 and the inner cavity of valve body 1 are coordinated by screw thread pair, during rotation valve rod 2, realized using screw thread pair
Valve rod 2 is moved up and down with separate or contact valve port.When needing to operate shut-off valve, bonnet is opened, operating valve lever 2 is with unlatching
Or close port.
Integral material casting and forming may be used in the valve body 1 of shut-off valve, then by machining, forms the first extension
14th, the second extension 13 and valve port 12.The benefit of this set is that processing is more convenient.
In order to which shut-off valve is installed in system pipeline, the lower end of the first extension 13 and shut-off valve, which is respectively connected with, to be connect
Pipe.For the ease of being installed with indoor unit, the side (lower end of shut-off valve shown in Fig. 2) of usual shut-off valve is directly with taking over weldering
It connects, opposite side i.e. the first extension 13 then uses active joint.In the present embodiment, the first extension 14 passes through union nut
3 are fixed with the take over 6 of system.Specifically, the first extension 14 has the auxiliary section 141 to take the form of inclined plane, mutually fit therewith
Ying Di, take over 6 have expansion mouth 61, and union nut 3 then has press keeping section 31.When in use, 6 expansion mouth 61 is will take over to abut
On the auxiliary section 141 of the first extension 14, external screw thread is provided on the periphery wall of the first extension 14, union nut 3 has
Internal thread by screwing union nut 3, will take over 6 and be fixed on the first extension 14.
In the present embodiment, the first lug boss 311, the first lug boss are additionally provided on the press keeping section 31 of union nut 3
311 cross sectional shape can be arch or triangle, trapezoidal or other irregular shapes.In this way, just in press keeping section
31 surface forms a circle bulge loop.When tightening union nut 3, the first lug boss 311 is contradicted first in the outer of expansion mouth 61
On edge face, the contact surface of sealing position can be effectively reduced, so as to reduce packing torque.
Fig. 4 is please referred to, Fig. 4 is provided the structure partial enlarged drawing of the shut-off valve of second embodiment by the utility model.
For convenience of description, only to being described in second embodiment with first embodiment difference, for this
Part is not referred in the description of embodiment, first embodiment is can refer to and is understood.
The difference lies on the press keeping section 31 of union nut 3 in addition to setting with first embodiment for present embodiment
Have except the first lug boss 311, the second lug boss 142 is also provided on the auxiliary section 141 of the first extension 14, that is, first
311 and second lug boss 142 of lug boss contradicts the outer edge surface and inner edge surface in the expansion mouth 61 taken over respectively.Equally, second is convex
The cross sectional shape for playing portion 142 can be arch or triangle, trapezoidal or other irregular shapes.Art technology
Personnel are appreciated that in the embodiment, can equally effectively reduce the contact surface of sealing position, so as to reduce packing torque.
Please refer to Fig. 5, Fig. 6；Wherein, Fig. 5 provides the union nut structure diagram of shut-off valve for the utility model；Fig. 6
Left view for Fig. 5.
The outside of union nut 3 has the operation portion 32 for installation operation, and the section of operation portion 32 is in regular hexagon,
During installation, operating personnel can use the tools such as adjustable wrench, tighten operation portion 32 and screw, be tightened in so as to will take over nut
On first extension.
In the present embodiment, the size relationship between edge lengths B and width A of operation portion 32 is set as：1/2B ＞ A
＞ 1/10B.In this way, it can originally use the tool in the installation of same model shut-off valve that cannot be used directly for this embodiment party
Formula prevents that screw thread is caused to skid or destroy when torque is excessive when tightening union nut.
Present embodiment is suitable for the shut-off valve of various specifications model, and the shut-off valve of different size can determine union nut
1/2B ＞ A ＞ 1/10B are set as to edge lengths B, the width A that then will take over nut.Also, the width of operation portion 32
Value meets：A >=2mm if the value of width A is too small, influences whether to install.
It should be noted that the term positions such as upper and lower, left and right mentioned by this specification, are made with Figure of description
On the basis of, it introduces for ease of description；And the ordinal numbers such as " first " in component names, " second ", also for convenient for
It describes and introduces, be not meant to make any restriction to any order of component.
Shut-off valve provided by the utility model is described in detail above.Specific case used herein is to this
The principle and embodiment of utility model is expounded, and the explanation of above example is only intended to help to understand the utility model
Method and its core concept.It should be pointed out that for those skilled in the art, it is new not departing from this practicality
Under the premise of type principle, can also to the utility model, some improvement and modification can also be carried out, these improvement and modification also fall into this reality
With in novel scope of the claims.
Claims (8)
1. shut-off valve, it is characterised in that：Including valve body (1) and from outwardly extending first extension of the valve body (1)
(14), (6) are taken over to be fixedly connected with first extension (14) by union nut (3)；
First extension (14) is provided with auxiliary section (141), and the union nut (3) is provided with press keeping section (31), described
Press keeping section (31) is provided with the first lug boss (311), and take over (6) are provided with expansion mouth (61), when the union nut (3)
During in tightening state, the press keeping section (31), the expansion mouth (61), the auxiliary section (141) abut successively, described to take over
Nut (3) is abutted against by first lug boss (311) with the expansion mouth (61).
2. shut-off valve as described in claim 1, which is characterized in that the union nut (3) is provided with internal thread, and described first
Extension (14) is provided with external screw thread, and the two is fixed by thread fitting.
3. shut-off valve as described in claim 1, which is characterized in that the cross sectional shape of first lug boss (311) for arch,
Triangle is trapezoidal.
4. shut-off valve as described in claim 1, which is characterized in that on the auxiliary section (141) of first extension (14) also
The second lug boss (142) is provided with, and is configured to：When union nut (3) is in tightening state, first lug boss
(311) and second lug boss (142) contradicts outer edge surface and inner edge surface in the expansion mouth (61) respectively.
5. shut-off valve as claimed in claim 4, which is characterized in that the cross sectional shape of second lug boss (142) for arch,
Triangle is trapezoidal.
6. such as claim 1-5 any one of them shut-off valves, which is characterized in that the union nut (3) further includes operation portion
(32), the section of the operation portion (32) is in regular hexagon.
7. shut-off valve as claimed in claim 6, which is characterized in that the operation portion (32) to edge lengths and the operation portion
(32) width meets relationship below：
1/2B ＞ A ＞ 1/10B；
Wherein, B is to edge lengths, and A is width.
8. shut-off valve as claimed in claim 7, which is characterized in that the width value of the operation portion (32) meets：A≥2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721446788.4U CN207486062U (en) | 2017-10-31 | 2017-10-31 | Shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721446788.4U CN207486062U (en) | 2017-10-31 | 2017-10-31 | Shut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207486062U true CN207486062U (en) | 2018-06-12 |
Family
ID=62479042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721446788.4U Active CN207486062U (en) | 2017-10-31 | 2017-10-31 | Shut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207486062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336298A (en) * | 2018-12-19 | 2020-06-26 | 浙江三花智能控制股份有限公司 | Valve device and pipeline connecting structure |
-
2017
- 2017-10-31 CN CN201721446788.4U patent/CN207486062U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336298A (en) * | 2018-12-19 | 2020-06-26 | 浙江三花智能控制股份有限公司 | Valve device and pipeline connecting structure |
| CN111336298B (en) * | 2018-12-19 | 2024-01-19 | 浙江三花智能控制股份有限公司 | Valve device and pipeline connection structure |
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|---|---|---|---|
| GR01 | Patent grant |