CN209245283U - Three-eccentric-butterfly-valve with metal sealing - Google Patents
Three-eccentric-butterfly-valve with metal sealing Download PDFInfo
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- CN209245283U CN209245283U CN201822230825.9U CN201822230825U CN209245283U CN 209245283 U CN209245283 U CN 209245283U CN 201822230825 U CN201822230825 U CN 201822230825U CN 209245283 U CN209245283 U CN 209245283U
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- valve body
- flap
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- sealing
- ring
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Abstract
The utility model provides a kind of three-eccentric-butterfly-valve with metal sealing, including valve body, valve body upper end is fixed with bonnet, lower end is fixed with bottom flange, valve body is interior from top to bottom to be connected with main shaft, the flap with valve seal is connected on main shaft, valve body and valve flap contacts face are cone match, indent has seal chamber on the conical surface of flap, metal O-ring is equipped in seal chamber, flap corresponds to seal chamber lateral surface and is fixed with the sealing ring being crimped on metal O-ring in seal chamber, sealing ring and valve body contact face are also cone match, outside sealing ring also there is drop sealing ring to be crimped on the pressing plate on flap.The structure design of the utility model is reasonable, pass through the design of cone match and metal O-ring, sealing for valve body and flap provides decrement and deformation quantity, effectively improve sealing performance, the contact surface of valve body and flap uses cone match simultaneously, sealing surface is highly polished, can effectively solve the problems, such as leakage rate, extends the service life of three-eccentric-butterfly-valve.
Description
Technical field
The utility model relates to butterfly valve especially three-eccentric-butterfly-valve technical fields more particularly to a kind of with metal sealing
Three-eccentric-butterfly-valve.
Background technique
Three-eccentric-butterfly-valve, be widely used in medium temperature≤425 DEG C metallurgy, electric power, petrochemical industry and plumbing and
On the industrial pipelines such as urban construction, makes adjustments flow and carry cutout body use.Common three-eccentric-butterfly-valve is in flap and valve seal
Place, generallys use that graphite is stacked and metal loop seals form.In normal conditions, stacked and metal sealing form is easy hair
Life is pulled, and in volume production, volume production valve is not able to satisfy the leakage rate that API598-2009 is standardized.Therefore, it is necessary to for existing
There is something special, is further designed the metal sealing of three-eccentric-butterfly-valve.
Utility model content
Technical problem to be solved by the utility model is: the deficiency in order to overcome the prior art, the utility model provides one
Kind of sealing surface is highly polished, with certain decrement and amount of elastic deformation, and good seal performance can effectively solve amount of leakage and ask
Topic, the three-eccentric-butterfly-valve with metal sealing to prolong the service life.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of three eccentricity butterfly with metal sealing
Valve, including valve body, the valve body upper end is fixed with bonnet, lower end is fixed with bottom flange, the valve body interior connection from top to bottom
There is the main shaft for running through bonnet, and connecting with bottom flange, the flap with valve seal, the valve body are connected on the main shaft
It is cone match with valve flap contacts face, indent has seal chamber on the conical surface of the flap, is equipped with metal O in the seal chamber
Type circle, the flap correspond to seal chamber lateral surface and are fixed with the sealing ring being crimped on metal O-ring in seal chamber, the sealing
Ring and valve body contact face are also cone match, outside the sealing ring also there is drop sealing ring to be crimped on the pressing plate on flap.
Further, the seal chamber is right-angled trapezium along main shaft axial cross section, and the inclined-plane of right-angled trapezium corresponds to valve
The valve conical surface, the outer diameter of the metal O-ring are greater than the length on a longer bottom edge in right-angled trapezium.
Further, it is provided with the second groove being equally recessed inwardly on the flap conical surface of the seal chamber lateral surface,
The sealing ring is fixed in the second groove and the conical surface of sealing ring stretches out the second groove.
Further, the conical surface of the valve body is greater than seal chamber right-angled trapezium bevel edge along the length of main shaft axial cross section
Length, between valve body and flap, between valve body and sealing ring be cone match.
There is the three-eccentric-butterfly-valve of metal sealing using above-mentioned design, after installation, the contact surface of flap and valve body is using cone
Face cooperation, the conical surface is highly polished, while the seal chamber of mountable metal O-ring is designed on the conical surface, in cone match crimping,
Certain compression can be carried out to metal O-ring, when valve body is crimped with flap cooperation, provide certain decrement and deflection,
The sealing performance of valve body and valve plate is effectively improved, leakage is reduced.
The utility model has the beneficial effects that the three-eccentric-butterfly-valve provided by the utility model with metal sealing, structure
Rationally, by the design of cone match and metal O-ring, the sealing for valve body and flap provides decrement and deformation quantity for design,
Sealing performance is effectively improved, while the contact surface of valve body and flap uses cone match, sealing surface is highly polished, can effectively solve
Leakage rate problem extends the service life of three-eccentric-butterfly-valve.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the utility model optimum embodiment.
Fig. 2 is the enlarged diagram in Fig. 1 at A.
It is 1, valve body 2 in figure, bonnet, 3, bottom flange 4, main shaft 5, flap 6, seal chamber 7, metal O-ring 8, close
Seal ring 9, pressing plate.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
A kind of three-eccentric-butterfly-valve with metal sealing as depicted in figs. 1 and 2, is the utility model optimum embodiment,
Including valve body 1,1 upper end of valve body is fixed with bonnet, 2, lower end is fixed with bottom flange 3, and the valve body 1 is interior from top to bottom to be connected
It is connected to the main shaft 4 for running through bonnet, 2 and connecting with bottom flange 3, the flap 5 sealed with valve body 1 is connected on the main shaft 4.
The valve body 1 and 5 contact surface of flap is cone match, and indent has seal chamber on the conical surface of the flap 5
6.Metal O-ring 7 is equipped in the seal chamber 6, corresponding 6 lateral surface of seal chamber of the flap 5, which is fixed with, presses metal O-ring 7
The sealing ring in seal chamber 6 is connect, the sealing ring and 1 contact surface of valve body are also cone match.Also have outside the sealing ring
There is drop sealing ring to be crimped on the pressing plate 9 on flap 5.
The seal chamber 6 is right-angled trapezium along 4 axial cross section of main shaft, and the inclined-plane of right-angled trapezium corresponds to 5 conical surface of flap,
The outer diameter of the metal O-ring 7 is greater than the length on a longer bottom edge in right-angled trapezium.The valve of 6 lateral surface of seal chamber
The second groove being equally recessed inwardly is provided on 5 conical surface of valve, the sealing ring is fixed in the second groove and the conical surface of sealing ring
Stretch out the second groove.The conical surface of the valve body 1 is greater than 6 right-angled trapezium bevel edge of seal chamber along the length of 4 axial cross section of main shaft
Length, between valve body 1 and flap 5, between valve body 1 and sealing ring be cone match.
There is the three-eccentric-butterfly-valve of metal sealing using above-mentioned design, after installation, the contact surface of flap 5 and valve body 1 is used
Cone match, the conical surface is highly polished, while the seal chamber 6 of mountable metal O-ring 7 is designed on the conical surface, in cone match pressure
When connecing, certain compression can be carried out to metal O-ring 7, when the cooperation of valve body 1 and flap 5 crimp, provide certain decrement with
Deflection effectively improves the sealing performance of valve body 1 Yu valve plate, reduces leakage.
The three-eccentric-butterfly-valve with metal sealing being designed in this way, it is reasonable in design, it is O-shaped by cone match and metal
The design of circle 7 provides decrement and deformation quantity for the sealing of valve body 1 and flap 5, effectively improves sealing performance, at the same valve body 1 and
The contact surface of flap 5 uses cone match, and sealing surface is highly polished, can effectively solve the problems, such as leakage rate, extends three-eccentric-butterfly-valve
Service life.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (4)
1. a kind of three-eccentric-butterfly-valve with metal sealing, it is characterised in that: including valve body (1), valve body (1) upper end is fixed
There is bonnet, (2), lower end to be fixed with bottom flange (3), the valve body (1) from top to bottom in be connected with through bonnet, (2) and with
The main shaft (4) of bottom flange (3) connection is connected with the flap (5) with valve body (1) sealing, the valve body on the main shaft (4)
It (1) is cone match with flap (5) contact surface, indent has seal chamber (6) on the conical surface of the flap (5), the sealing
Metal O-ring (7) are equipped in chamber (6), corresponding seal chamber (6) lateral surface of the flap (5), which is fixed with, presses metal O-ring (7)
The sealing ring (8) in seal chamber (6) is connect, the sealing ring (8) and valve body (1) contact surface are also cone match, and described is close
Seal ring (8) also there is drop sealing ring (8) to be crimped on the pressing plate (9) on flap (5) outside.
2. as described in claim 1 with the three-eccentric-butterfly-valve of metal sealing, it is characterised in that: described seal chamber (6) edge
Main shaft (4) axial cross section is right-angled trapezium, and the inclined-plane of right-angled trapezium corresponds to flap (5) conical surface, the metal O-ring (7)
Outer diameter is greater than the length on a longer bottom edge in right-angled trapezium.
3. as claimed in claim 2 with the three-eccentric-butterfly-valve of metal sealing, it is characterised in that: the seal chamber (6) is outside
Be provided with the second groove being equally recessed inwardly on flap (5) conical surface of side, the sealing ring (8) be fixed in the second groove and
The conical surface of sealing ring (8) stretches out the second groove.
4. as claimed in claim 3 with the three-eccentric-butterfly-valve of metal sealing, it is characterised in that: the cone of the valve body (1)
Face is greater than the length of seal chamber (6) right-angled trapezium bevel edge along the length of main shaft (4) axial cross section, valve body (1) and flap (5) it
Between, between valve body (1) and sealing ring (8) be cone match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822230825.9U CN209245283U (en) | 2018-12-28 | 2018-12-28 | Three-eccentric-butterfly-valve with metal sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822230825.9U CN209245283U (en) | 2018-12-28 | 2018-12-28 | Three-eccentric-butterfly-valve with metal sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209245283U true CN209245283U (en) | 2019-08-13 |
Family
ID=67535162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822230825.9U Active CN209245283U (en) | 2018-12-28 | 2018-12-28 | Three-eccentric-butterfly-valve with metal sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209245283U (en) |
-
2018
- 2018-12-28 CN CN201822230825.9U patent/CN209245283U/en active Active
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