CN208935412U - The corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50 ~ DN300 - Google Patents
The corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50 ~ DN300 Download PDFInfo
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- CN208935412U CN208935412U CN201821764666.4U CN201821764666U CN208935412U CN 208935412 U CN208935412 U CN 208935412U CN 201821764666 U CN201821764666 U CN 201821764666U CN 208935412 U CN208935412 U CN 208935412U
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Abstract
The utility model discloses a kind of corrosion-resistant butterfly valves of the bis- eccentric wafer types of DN50~DN300, including valve body, valve plate, valve rod and valve shaft；Valve rod position of mounting hole integrally casting shaping is corresponded in the valve chamber of valve body upper axial positioning sleeve and lower axial positioning sleeve；The valve seat includes annular body, and the inner periphery sealing surface of the annular body and the excircle sealing surface of valve plate form sealing pair；Cyclic annular positioning protrusion, corresponding ring-type positioning protrusion position are equipped in the annular body described in water inlet end, the valve body is equipped with cyclic annular locating slot；The center line of the ring packing compensating tank of sealing compensation when being equipped with reversed be pressurized close to inner periphery sealing surface side in the annular body described in water outlet, the ring packing compensating tank and above-mentioned cyclic annular convex is not on the same circumference.The utility model can be realized the vertical installation of valve, improve assembly efficiency, be conducive to processing；It may be implemented that sealing compensation may be implemented when front is pressurized simultaneously；The advantages that improving valve seal effect and service life.
Description
Technical field
The utility model belongs to corrosion-resistant butterfly valve manufacturing technology field more particularly to a kind of bis- bias of DN50~DN300 are right
The corrosion-resistant butterfly valve of clip.
Background technique
Butterfly valve plays tune as the valve for opening or closing trandfer fluid medium in pipeline and equipment in pipeline and equipment
The effect for saving and shutting off has a wide range of applications in fields such as petroleum, chemical industry, electric power and city water supply and sewages.It passes in the prior art
The corrosion-resistant butterfly valve of system includes valve body, the valve plate that is mounted in valve body valve chamber, connects the valve rod and valve shaft of valve plate, the valve rod
Axle sleeve is equipped between valve shaft and valve body；In the valve seat that the water outlet of valve body is installed by seal joint；Small rule in the prior art
Need to install positioning sleeve between the valve body and valve plate of the corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50~DN300 of lattice to realize valve body
It installs and positions with valve plate, need to process positioning spigot on valve body again in actual processing, to guarantee the installation site of positioning sleeve, be
It realizes that assembly needs to guarantee positioning sleeve and positioning spigot, improves the quantity of product component, while also increasing product component
Difficulty of processing and equipment occupancy, vertical assembly in addition cannot achieve using individual positioning sleeve, only use horizontal installation
It just can guarantee that positioning sleeve does not slide in installation process, the assembly efficiency in turn resulting in traditional butterfly valve is lower.
The valve seat of existing butterfly valve is generally made of rubber material, mainly includes that seal joint is fitted in the ring on valve body
Shape ontology is that the mating surface of valve body is plane contact, and valve seat easily moves in actual use or assembling process in this way,
Cause the problem of leading to leakage or seal failure because of valve seat movement；In addition, existing valve seat is when valve is reversely pressurized, with
The problem of easily being leaked between the sealing surface of valve plate.
In addition, the valve seat of the bis- eccentric corrosion-resistant butterfly valves of wafer type of DN50~DN300 of existing small dimension generally pass through it is several
The defects of fastening bolt is connect with valve body, and such assembly efficiency is low, and installation and maintenance are cumbersome.
It can be realized the vertical installation of valve for this purpose, the utility model provides one kind, improve assembly efficiency, be conducive to processing；Together
When the bis- bias wafer type corrosion-resistant butterfly valves of DN50~DN300 that sealing compensation may be implemented when front is pressurized may be implemented
Summary of the invention
In view of the problems of the existing technology, it is resistance to provide a kind of bis- eccentric wafer types of DN50~DN300 for the utility model
Corrode butterfly valve,
The utility model is realized in this way a kind of corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50~DN300, including valve
Body, the valve plate being mounted in valve body valve chamber connect the valve rod and valve shaft of valve plate, and axis is equipped between the valve rod and valve shaft and valve body
Set；In the valve seat that the water outlet of valve body is installed by seal joint；It is characterized by: corresponding to valve rod installation in the valve chamber of valve body
Hole site integrally casting shaping has upper axial positioning sleeve；The valve rod passes through upper axial positioning sleeve and connect with valve plate；On valve body
Corresponding valve shaft position of mounting hole integrally casting shaping has lower axial positioning sleeve；The valve shaft passes through lower axial positioning sleeve and valve plate connects
It connects；Gap is equipped between valve plate in the inner face of upper axial positioning sleeve described in valve chamber and lower axial positioning sleeve；It is described
Valve seat includes annular body, and the inner periphery sealing surface of the annular body and the excircle sealing surface of valve plate form sealing pair；?
Annular body described in water inlet end is equipped with cyclic annular positioning protrusion, corresponding ring-type positioning protrusion position, and the valve body is equipped with ring-type
Locating slot；The annular of sealing compensation is close when being equipped with reversed be pressurized close to inner periphery sealing surface side in the annular body described in water outlet
Seal compensating tank, the center line of the ring packing compensating tank and above-mentioned cyclic annular convex is not on the same circumference.
In the above-mentioned technical solutions, it is preferred that the inner end of the upper axial positioning sleeve and lower axial positioning sleeve in valve chamber
It is 0.3mm that face is equipped with gap width between valve plate.
In the above-mentioned technical solutions, it is preferred that highly preferred 5~6mm of the positioning protrusion.
In the above-mentioned technical solutions, it is preferred that the outer wall of the ring packing compensating tank is apart from valve seat inner periphery sealing surface
With a thickness of 2~3mm.
In the above-mentioned technical solutions, it is preferred that the seal joint, valve seat and valve body are fixedly connected by the pin that rises, that is, are existed
Seal joint, valve seat and valve body corresponding position are equipped with dowel hole, are fitted with the pin that rises in dowel hole；Wherein the valve body is close
The dowel hole sealed on pressure ring and valve seat is through-hole, and the dowel hole on the valve body is blind hole.
In the above-mentioned technical solutions, it is preferred that at least provided with the tapped through hole being symmetric, institute on the seal joint
It states and is fitted with knockout screw in threaded hole.
In conclusion the utility model can be realized the vertical installation of valve, improve assembly efficiency, it is conducive to processing；It simultaneously can
Sealing compensation may be implemented when realizing that front is pressurized；The advantages that improving valve seal effect and service life.
Detailed description of the invention
Fig. 1 is the utility model structure diagram
Fig. 2 is A-A cross-sectional view in Fig. 1；
Fig. 3 is the portion I enlarged drawing in Fig. 2；
Fig. 4 is the portion II enlarged drawing in Fig. 2；
Fig. 5 is valve seat cross section structure schematic diagram.
In figure, 1, valve body；1-1, upper axial positioning sleeve；1-2, lower axial positioning sleeve；1-3, cyclic annular locating slot；2, valve plate；
3, valve rod；4, valve shaft；4-1, axle sleeve；5, valve seat；5-1, annular body；5-2, cyclic annular positioning protrusion；5-3, sealing compensation slot；6,
Seal joint；6-1, tapped through hole；7, rise pin；8, knockout screw；
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to embodiments, to this
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain that this is practical
It is novel, it is not used to limit the utility model, in order to further illustrate the technology contents of the utility model, below with reference to related attached
Figure is described in detail.
Fig. 1 is please referred to 5；A kind of corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50~DN300, including valve body 1, it is mounted on valve
Valve plate 2 in body valve chamber connects the valve rod 3 and valve shaft 4 of valve plate, and axle sleeve 4-1 is equipped between the valve rod and valve shaft and valve body；?
The water outlet of valve body passes through the valve seat 5 that seal joint 6 is installed；Valve rod position of mounting hole is corresponded in the valve chamber of valve body 1 integrally to cast
It makes and forms axial positioning sleeve 1-1；The valve rod 3 passes through upper axial positioning sleeve 1-1 and connect with valve plate 2；It is corresponding on valve body 1
Valve shaft position of mounting hole integrally casting shaping has lower axial positioning sleeve 1-2；The valve shaft 4 passes through lower axial positioning sleeve 1-2 and valve
Plate 2 connects；In order to guarantee the smooth rotation of valve plate, the inner face of the upper axial positioning sleeve and lower axial positioning sleeve in valve chamber
Gap is equipped between valve plate；The material of the valve seat 5 uses rubber material integrated injection molding, in order to realize that valve seat exists
Have the effect of that sealing compensation, the valve seat use such as flowering structure when reversed compression: the valve seat 5 includes annular body 5-1, institute
The excircle sealing surface of the inner periphery sealing surface and valve plate of stating annular body forms sealing pair；In the annular body described in water inlet end
Equipped with cyclic annular positioning protrusion 5-2, corresponding ring-type positioning protrusion position, the valve body 1 is equipped with cyclic annular locating slot 1-3, in reality
Assembled can be by the positioning protrusion of valve seat and valve body upper annular location fit, when preventing installation seal joint, and valve seat sliding mentions
High assembly efficiency；Sealing compensation when being equipped with reversed be pressurized close to inner periphery sealing surface side in the annular body described in water outlet
Ring packing compensating tank 5-3, specifically, when reversed be pressurized, pressure medium extends to ring packing to the pressure face of valve seat
In compensating tank, under the action of pressure medium the sealing surface of valve seat will by towards valve plate and one, sealing surface of seat direction pressure,
This pressure is compensation pressure, and then achievees the purpose that reversed compression seal compensation；The ring packing compensating tank and above-mentioned
Not on the same circumference, its object is to avoid leading to valve because of the setting of ring packing compensating tank for the center line of cyclic annular convex
The decline of the whole sealing intensity of seat；In order to realize that sealing surface is easily deformable, the ring packing compensating tank is close to sealing surface side.
In the above-mentioned technical solutions, it is preferred that the inner end of the upper axial positioning sleeve and lower axial positioning sleeve in valve chamber
Face is equipped with gap width L between valve plate1For 0.3mm.
In the above-mentioned technical solutions, it is preferred that the height H of the positioning protrusion1It is preferred that 5~6mm.
In the above-mentioned technical solutions, it is preferred that the outer wall of the ring packing compensating tank is apart from valve seat inner periphery sealing surface
Thickness H2For 2~3mm；Guarantee effective seal thickness.
In the above-mentioned technical solutions, it is preferred that the seal joint 6, valve seat 5 and valve body 1 are fixedly connected by the pin 7 that rises,
The pin that rises belongs to well known hardware component, can buy or customize in the market processing according to the specification of actual use, that is, seal
Pressure ring, valve seat and valve body corresponding position are equipped with dowel hole, are fitted with the pin that rises in dowel hole；The wherein valve seal pressure
Dowel hole on ring and valve seat is through-hole, and the dowel hole on the valve body is blind hole.Using pin and the several circumference of tradition of rising
Direction is multiple to be bolted compared to the cost for substantially increasing assembly efficiency and maintenance.
In the above-mentioned technical solutions, it is preferred that at least provided with the tapped through hole 6- being symmetric on the seal joint 6
1, knockout screw 8 is fitted in the threaded hole, when needing detachable, tightens knockout screw, the inner face of knockout screw will push up
Tight valve body solves prior art seal joint as tightening for demounting bolt slowly disassembles seal joint from valve body
Dismantle cumbersome problem.
In conclusion the utility model can be realized the vertical installation of valve, improve assembly efficiency, it is conducive to processing；It simultaneously can
Sealing compensation may be implemented when realizing that front is pressurized；The advantages that improving valve seal effect and service life.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principle of utility model, such as cyclic annular positioning protrusion and ring
The shape of shape sealing compensation slot is rectangle, semicircle, trapezoidal, dove-tail form etc., should be included in the protection model of the utility model
Within enclosing.
Claims (6)
1. a kind of corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50~DN300, including valve body, the valve plate being mounted in valve body valve chamber,
The valve rod and valve shaft for connecting valve plate are equipped with axle sleeve between the valve rod and valve shaft and valve body；Pass through sealing in the water outlet of valve body
The valve seat of pressure ring installation；
It is characterized by: corresponding to valve rod position of mounting hole integrally casting shaping in the valve chamber of valve body has upper axial positioning sleeve；Institute
Valve rod is stated to connect across upper axial positioning sleeve with valve plate；Valve shaft position of mounting hole integrally casting shaping is corresponded on valve body lower axle
To positioning sleeve；The valve shaft passes through lower axial positioning sleeve and connect with valve plate；The upper axial positioning sleeve and lower axial direction in valve chamber
The inner face of positioning sleeve is equipped with gap between valve plate；
The valve seat includes annular body, and the inner periphery sealing surface of the annular body and the excircle sealing surface of valve plate form close
Envelope is secondary；
It is equipped with cyclic annular positioning protrusion in the annular body described in water inlet end, corresponds to ring-type positioning protrusion position, is set on the valve body
There is cyclic annular locating slot；
The ring packing of sealing compensation when being equipped with reversed be pressurized close to inner periphery sealing surface side in the annular body described in water outlet
Compensating tank, the center line of the ring packing compensating tank and above-mentioned cyclic annular convex is not on the same circumference.
2. the corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50~DN300 according to claim 1, it is characterised in that: in valve chamber
It is 0.3mm that the inner face of the interior upper axial positioning sleeve and lower axial positioning sleeve is equipped with gap width between valve plate.
3. the corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50~DN300 according to claim 1, it is characterised in that: described fixed
Highly preferred 5~6mm of position protrusion.
4. the corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50~DN300 according to claim 1, it is characterised in that: the ring
The outer wall of shape sealing compensation slot is apart from valve seat inner periphery sealing surface with a thickness of 2~3mm.
5. the corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50~DN300 according to claim 1, it is characterised in that: described close
Envelope pressure ring, valve seat are fixedly connected with valve body by the pin that rises, i.e., positioning pin is equipped on seal joint, valve seat and valve body corresponding position
Hole is fitted with the pin that rises in dowel hole；Wherein the dowel hole on the valve seal pressure ring and valve seat is through-hole, the valve body
On dowel hole be blind hole.
6. the corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50~DN300 according to claim 1, it is characterised in that: described close
It seals on pressure ring at least provided with the tapped through hole being symmetric, is fitted with knockout screw in the tapped through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821764666.4U CN208935412U (en) | 2018-10-29 | 2018-10-29 | The corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50 ~ DN300 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821764666.4U CN208935412U (en) | 2018-10-29 | 2018-10-29 | The corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50 ~ DN300 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208935412U true CN208935412U (en) | 2019-06-04 |
Family
ID=66726420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821764666.4U Active CN208935412U (en) | 2018-10-29 | 2018-10-29 | The corrosion-resistant butterfly valve of the bis- eccentric wafer types of DN50 ~ DN300 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208935412U (en) |
-
2018
- 2018-10-29 CN CN201821764666.4U patent/CN208935412U/en active Active
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