CN206159506U - Help and seal formula line with rubber central line butterfly valve - Google Patents
Help and seal formula line with rubber central line butterfly valve Download PDFInfo
- Publication number
- CN206159506U CN206159506U CN201621185207.1U CN201621185207U CN206159506U CN 206159506 U CN206159506 U CN 206159506U CN 201621185207 U CN201621185207 U CN 201621185207U CN 206159506 U CN206159506 U CN 206159506U
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- rubber
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- butterfly valve
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Abstract
The utility model belongs to the valve seal field relates to a help and seal formula line with rubber central line butterfly valve. Help and seal formula line with rubber central line butterfly valve the valve rod of control flap aperture is installed in the centre of butterfly plate, the both ends of valve rod install through two cylinder holes in the middle of the line with rubber disk seat respectively line with rubber disk seat and valve body on, the line with rubber disk seat fix on the valve body, wherein at least one the hole of valve body be equipped with a recess for storage inflation grease. The utility model discloses a help and seal formula line with rubber central line butterfly valve is difficult for revealing than prior art's line with rubber central line butterfly valve, and sealing performance is better, can realize helping on line sealing and maintain (the valve must be pulled down from the pipeline to former central line butterfly valve could restore sealing performance ), and life is longer.
Description
Technical field
This utility model belongs to valve seal field, is related to one kind and helps envelope formula line with rubber centre-pivoted butterfly valve.
Background technology
At present, known line with rubber centre-pivoted butterfly valve structure is overall line with rubber valve seat, and in being mounted in the endoporus of valve body, butterfly plate is mounted in valve
The centre of body structure length.Sealing principle be the external diameter of butterfly plate have to be larger than valve seat endoporus produce the magnitude of interference just can guarantee that valve is close
Sealing property.
, from pass is reached, progressively compressive deformation is once to make rubber valve seat for butterfly plate；From closing to opening, rubber valve seat is in elasticity work for butterfly plate
Original state is substantially returned to under.
After valve is mounted in operation a period of time on pipeline, along with increasing for butterfly plate on-off times, progressively produce as follows
Problem.
1) due to rubber correlated performance impact, such as shore hardness percentage elongation, aging restorability etc., valve is used
After a period of time, the elasticity of rubber and restorative decline, sealing property declines.
2) in butterfly plate switching process, sealing surface after scraping is produced to valve seat and produces abrasion, decline valve seal performance.
3) (most of butterfly valve working conditions are all in complete when valve is in fully open position for the medium flowed in pipeline
Open position) butterfly plate outside diameter seal face is washed away, valve body inner bore is washed away, (butterfly plate is cylindrical and ethylene-propylene-diene monomer to make sealing pair
Two switch parts of glue line with rubber valve seat endoporus composition) magnitude of interference reduction, cause sealing property to decline.Particularly contain in medium
Sealing pair is washed away when metallic particles, sand grains and/or solid dielectric, causes sealing property to decline.
4) restriction due to structure and sealing principle and above-mentioned influence factor, line with rubber centre-pivoted butterfly valve is relative to pressure medium
(such as two bias, three-eccentric-butterfly-valve) easily leakage for the butterfly valve of sealing is realized, service life is relatively short.
Utility model content
The purpose of this utility model is to provide one kind and helps envelope formula line with rubber centre-pivoted butterfly valve, to make it compared with the line with rubber of prior art
Centre-pivoted butterfly valve is difficult to reveal, and sealing property more preferably, is capable of achieving to help envelope to safeguard that (former centre-pivoted butterfly valve must pull down valve from pipeline online
Sealing property could be repaired), and service life is longer.
In order to achieve this, in the embodiment on basis, this utility model provides one kind and helps envelope formula line with rubber centre-pivoted butterfly valve,
It is provided with the valve rod of control valve aperture in the centre of butterfly plate, and the two ends of described valve rod pass through respectively in the middle of line with rubber valve seat
Two cylindrical holes are arranged on described line with rubber valve seat and valve body, and described line with rubber valve seat is fixed on valve body, wherein at least one
The endoporus of individual described valve body is provided with a groove, for storage expansion oils and fatss.
In a preferred embodiment, this utility model provides one kind and helps envelope formula line with rubber centre-pivoted butterfly valve, wherein described
Groove be arranged on the endoporus of described valve body in the centre position of structure length.
In a preferred embodiment, this utility model provides one kind and helps envelope formula line with rubber centre-pivoted butterfly valve, wherein described
Groove be annular groove.
In a preferred embodiment, this utility model provides one kind and helps envelope formula line with rubber centre-pivoted butterfly valve, wherein described
Expansion oils and fatss be lithium base grease (GB/T5671-2014).
In a preferred embodiment, this utility model provides one kind and helps envelope formula line with rubber centre-pivoted butterfly valve, wherein described
Line with rubber valve seat quality of rubber materials be ethylene propylene diene rubber.
In a preferred embodiment, this utility model provides one kind and helps envelope formula line with rubber centre-pivoted butterfly valve, wherein described
Line with rubber valve seat in the middle of two cylindrical hole internal models be cast with two seals ring.
In a preferred embodiment, this utility model provides one kind and helps envelope formula line with rubber centre-pivoted butterfly valve, wherein described
Valve body on further perforate be tightly connected for the oiling device of the described expansion oils and fatss of described groove injection.
In a preferred embodiment, this utility model provides one kind and helps envelope formula line with rubber centre-pivoted butterfly valve, wherein described
Oiling device at the top of be provided with an oil cap, can inject described swollen in described groove by screwing described oil cap
Swollen oils and fatss.
In a preferred embodiment, this utility model provides one kind and helps envelope formula line with rubber centre-pivoted butterfly valve, wherein described
Be tightly connected by oiling device Taper Pipe screw realize.
In a preferred embodiment, this utility model provides one kind and helps envelope formula line with rubber centre-pivoted butterfly valve, wherein described
Be tightly connected by oiling device cylinder screw realize.
It is of the present utility model to help envelope formula line with rubber centre-pivoted butterfly valve, it is adaptable to water system, the network of rivers, sewage, middle water, heat distribution pipe network；
Stimulate the menstrual flow DN40-DN500mm suitable for nominal, nominal pressure PN0.6-2.5MPa；- 30-120 DEG C of temperature environment is usable in,
Fully meet China's north-south climate environment.
It is of the present utility model to help envelope formula line with rubber centre-pivoted butterfly valve to be difficult to reveal compared with the line with rubber centre-pivoted butterfly valve of prior art, sealing
More preferably can be capable of achieving to help envelope to safeguard (former centre-pivoted butterfly valve must pull down valve and could repair sealing property from pipeline) online, and make
It is longer with the life-span.
Description of the drawings
Fig. 1 is the schematic diagram for helping envelope formula line with rubber centre-pivoted butterfly valve structure of the present utility model.
Fig. 2 is the partial enlarged drawing (magnification ratio 3 of I positions in Fig. 1：1).
Specific embodiment
Specific embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1-2, it is exemplary of the present utility model to help envelope formula line with rubber centre-pivoted butterfly valve to be provided with the centre of butterfly plate 4
The valve rod 5 of control valve aperture, the two ends of valve rod 5 are respectively by the middle of line with rubber valve seat 3 (quality of rubber materials is ethylene propylene diene rubber)
Two cylindrical holes be arranged on line with rubber valve seat 3 and valve body 2 on, and two cylindrical hole middle molds be cast with sealing ring (blocking medium outside
Let out, blocking expansion oils and fatss are revealed into valve body 2)；Line with rubber valve seat 3 is fixed on valve body 2, and the endoporus of valve body 2 is in structure length
Centre position is respectively provided with an annular groove 7, for storage as the lithium base grease (GB/T5671-2014) for expanding oils and fatss；Valve
Further perforate on body 2 is tightly connected (screw quantity is according to depending on valve latus rectum) oiling by oiling device canalis spinalis screw 8
Device 1；The top of oiling device 1 is provided with an oil cap 6, and expansion oil can be injected in annular groove 7 by screwing oil cap 6
Fat.
This helps envelope formula line with rubber centre-pivoted butterfly valve in assembling, and first the injection expansion oils and fatss into annular groove 7, fill afterwards in oiling
Also expansion oils and fatss are filled when putting 1 installation wherein, and oiling device 1 is tightened on valve body 2.
This helps envelope formula line with rubber centre-pivoted butterfly valve when in use, when water system control centre has detected minor leakage, so that it may
To screw oil cap 6, the expansion oils and fatss in oiling device 1 are made to be pressed into the annular groove 7 of valve body 2.Because butterfly plate 4 is in open position
Put, line with rubber valve seat 3 is not pressurized.The both sides of annular groove 7 are blocked by the twice convex ring of line with rubber valve seat 3, so expansion oils and fatss injection
Afterwards by pressure principle to the low position flowing of pressure.Originally the expansion oils and fatss skewness that may newly inject, but it is several switching
Will flow to where expanding oils and fatss less where expansion oils and fatss are more after secondary, because three faces are obstructed in annular groove 7, new injection
Expansion oils and fatss increased volume and can only produce expansion to the sealing surface position of line with rubber valve seat 3, and make line with rubber valve seat 3 to outside butterfly plate 4
Footpath direction increased elasticity while being deformed, and increases the magnitude of interference and plays a part of to improve and repair the sealing of valve.
After this helps envelope formula line with rubber centre-pivoted butterfly valve to be mounted on system pipeline using a period of time, if control centre detects valve
Door has leakage and beyond system requirements, and now pipe-line maintenance personnel first open 45 ° or so butterfly plate 4, then square clockwise
To stubborn oil cap 6, until being screwed to bottom till.It is stubborn to note depending on foundation valve size several times and leakage situation.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this practicality to this utility model
New spirit and scope.So, if belonging to this utility model claim to these modifications of the present utility model and modification
And its within the scope of equivalent technology, then this utility model is also intended to comprising these changes and modification.Above-mentioned embodiment
Simply to illustration of the present utility model, this utility model can also be with other ad hoc fashions or other particular form realities
Apply, without departing from main idea of the present utility model or substitutive characteristics.Therefore, all should regard from the point of view of the embodiment of description is in terms of any
For illustrative rather than determinate.Scope of the present utility model should illustrate by appended claims, any with claim
It is intended to and the equivalent change of scope also should be included in the range of this utility model.
Claims (10)
1. one kind helps envelope formula line with rubber centre-pivoted butterfly valve, and it is provided with the valve rod of control valve aperture, described valve in the centre of butterfly plate
The two ends of bar are arranged on described line with rubber valve seat and valve body respectively by two cylindrical holes in the middle of line with rubber valve seat, described lining
Glue valve seat is fixed on valve body, it is characterised in that：The endoporus of the valve body described at least one is provided with a groove, for storing expansion
Oils and fatss.
It is 2. according to claim 1 to help envelope formula line with rubber centre-pivoted butterfly valve, it is characterised in that：Described groove is arranged on described
The endoporus of valve body is in the centre position of structure length.
It is 3. according to claim 1 to help envelope formula line with rubber centre-pivoted butterfly valve, it is characterised in that：Described groove is annular groove.
It is 4. according to claim 1 to help envelope formula line with rubber centre-pivoted butterfly valve, it is characterised in that：Described expansion oils and fatss are lithio profit
Consistent lubricant.
It is 5. according to claim 1 to help envelope formula line with rubber centre-pivoted butterfly valve, it is characterised in that：The rubber material of described line with rubber valve seat
Matter is ethylene propylene diene rubber.
It is 6. according to claim 1 to help envelope formula line with rubber centre-pivoted butterfly valve, it is characterised in that：In the middle of described line with rubber valve seat two
Individual cylindrical hole internal model is cast with two seals ring.
It is 7. according to claim 1 to help envelope formula line with rubber centre-pivoted butterfly valve, it is characterised in that：Further perforate on described valve body
It is tightly connected for the oiling device of the described expansion oils and fatss of described groove injection.
It is 8. according to claim 7 to help envelope formula line with rubber centre-pivoted butterfly valve, it is characterised in that：Set at the top of described oiling device
An oil cap is equipped with, described expansion oils and fatss can be injected in described groove by screwing described oil cap.
It is 9. according to claim 7 to help envelope formula line with rubber centre-pivoted butterfly valve, it is characterised in that：Described is tightly connected by oiling
Device Taper Pipe screw is realized.
It is 10. according to claim 7 to help envelope formula line with rubber centre-pivoted butterfly valve, it is characterised in that：Described is tightly connected by note
Oily device cylinder screw is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621185207.1U CN206159506U (en) | 2016-10-28 | 2016-10-28 | Help and seal formula line with rubber central line butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621185207.1U CN206159506U (en) | 2016-10-28 | 2016-10-28 | Help and seal formula line with rubber central line butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206159506U true CN206159506U (en) | 2017-05-10 |
Family
ID=58656115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621185207.1U Active CN206159506U (en) | 2016-10-28 | 2016-10-28 | Help and seal formula line with rubber central line butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206159506U (en) |
-
2016
- 2016-10-28 CN CN201621185207.1U patent/CN206159506U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 2 Yuwei 12th Road, Yufa Town, Daxing District, Beijing 102602 Patentee after: Beijing Beigao Valve Group Co.,Ltd. Address before: 102602 Yuwei 12th Road, Yufa Industrial Zone, Daxing District, Beijing Patentee before: BEIJING BEIGAO VALVE Co.,Ltd. |