CN205118264U - Bivalve seat is from seal structure - Google Patents
Bivalve seat is from seal structure Download PDFInfo
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- CN205118264U CN205118264U CN201520870039.9U CN201520870039U CN205118264U CN 205118264 U CN205118264 U CN 205118264U CN 201520870039 U CN201520870039 U CN 201520870039U CN 205118264 U CN205118264 U CN 205118264U
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- valve
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Abstract
The utility model relates to a bivalve seat is from seal structure, including valve body, valve barrel, case, interior disk seat and outer disk seat, the system has media channel in the valve body, and coaxial fixed mounted has a valve barrel in the valve body of medium flow direction end, and the direction drive installation has a case in this valve barrel, and case coaxial fixed mounted in the valve body of medium flow direction one end has the disk seat, case and valve seat seal contact, the disk seat adopts the interior disk seat of coaxial cascaded coaxial suit and outer disk seat to form double -deck disk seat, and the contact surface system of case has double -deck cascaded ring packing face, and the cascaded ring packing face of this bilayer contacts with interior disk seat and outer valve seat seal respectively. This structure adopts two valve holder structure, and multistage sealed, valve seal is effectual. This structure is particularly useful for containing particulate matter medium operating mode, improves the valve life -span, is applicable to the choke valve that ends under the abominable operating mode.
Description
Technical field
The utility model belongs to valve field, relates to throttling stop valve, especially a kind of double-valve-seat self sealing structure.
Background technique
At present, common throttling stop valve forms, along with the growth of service time primarily of valve body, valve seat, spool, valve pocket, valve core sealed cover easily weares and teares, especially containing the medium of graininess impurity, once sealing surface hinder by the granule foreign in medium, whole valve seal also timeliness.
Through retrieval, find the public technology of following analogous technical fields:
A kind of vacuum interruption flexible sealing connection rod butterfly valve (CN101749441B), include valve body, live axle, drive oil cylinder and driving arm, oil cylinder is driven to be connected with valve body by driving arm, its difference is valve body to have additional an escape way, described escape way includes double valve plates, double-valve-seat, at double valve plates, an enclosed space is formed between double-valve-seat, described double-valve-seat is fixed on valve body, double valve plates is formed by Double seal ring and double-valve-seat and seals, escape way is provided with the pipeline be connected with escape way, pipeline is disposed with from top to bottom stop valve and ventilation blower fan, it is in mating connection that the valve shaft of stop valve and live axle pass through linkage mechanism.The utility model has adapted to some special operation condition situation, particularly in safety precaution, the situation of using function can not be affected, the utility model can substitute glasses valve, it is little that it has volume, safety class, sealability are higher, and operation is simple and reliable, are improving further and development of Connecting rod butterfly valve function.
Comparative analysis is known, and published patented technology and known general knowledge all exist larger technology difference compared with present patent application.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art part, there is provided that a kind of structure is simple, design science, good stability, the reliable double-valve-seat self sealing structure of sealing, be applicable to the double-valve-seat self sealing structure of graininess medium, and extend life of valve.
The utility model solves its technical problem and takes following technological scheme to realize:
A kind of double-valve-seat self sealing structure, comprise valve body, valve pocket, spool, interior valve seat and outer seat, medium channel is shaped with in valve body, a valve pocket is coaxially fixed with in the valve body of MEDIA FLOW to end, in this valve pocket, guiding drive installation has a spool, spool is coaxially fixed with valve seat towards MEDIA FLOW in the valve body of one end, spool contacts with valve base sealing, it is characterized in that: described valve seat adopts the interior valve seat of coaxial cascade coaxial package and outer seat to form double-deck valve seat, the surface of contact of spool is shaped with Double-ladder formula annular sealing surface, this Double-ladder formula annular sealing surface seals with interior valve seat and outer seat respectively and contacts.
And described outer seat is columnar structured, is shaped with internal projecting ring in outer seat, the coaxial spacing suit internal valve seat in outer seat.
And between radial one end of described interior valve seat and valve body, radial equipartition is provided with multiple spring, leaves gap between the radial the other end of interior valve seat and the internal projecting ring of outer seat.
And interval is provided with many annular outer seat seal rings between described outer seat and the radial surface of contact of valve body.
And, between described interior valve seat and the radial surface of contact of outer seat, interior valve seat insert is installed.
Advantage of the present utility model and good effect are:
1, this structure adopts double-valve-seat structure, and multi-stage sealed, valve seal is effective.
2, this structure is provided with seal ring between interior valve seat and outer seat, form sealing, interior valve seat afterbody is provided with spring, is upspring by interior valve seat, when spool is closed, first and interior sealing surface of seat is formed and seals, under spring and medium effect, form selfsealings, good sealing effect, even if interior sealing surface of seat hinder by the granule foreign in medium and seal timeliness, its effect is not disappear completely, and it can stop that impurity and particulate matter wash away next stage sealing surface, is applicable to the operating mode containing granule medium.
3, this structure is particularly useful for, containing particulate matter mixture condition, improving life of valve, being applicable to the cut-off throttle valve under bad working environments.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model.
In figure the direction of arrow be MEDIA FLOW to.
Reference character represents: 1 valve body, valve seat in 2,3 outer seats, 4 spools, 5 springs, valve seat insert in 6,7 outer seat seal rings, 8 valve pockets.
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of double-valve-seat self sealing structure, comprise valve body 1, valve pocket 8, spool 4, interior valve seat 2 and outer seat 3, medium channel is shaped with in valve body, a valve pocket 8 is coaxially fixed with in the valve body of MEDIA FLOW to end, in this valve pocket, guiding drive installation has a spool, and spool is coaxially fixed with valve seat towards MEDIA FLOW in the valve body of one end, and spool contacts with valve base sealing, thus the medium channel blocked in valve body, valve closing; Valve opening when spool and valve seat depart from.
Innovative point of the present utility model is:
The valve seat of the present embodiment adopts the interior valve seat 2 of coaxial cascade coaxial package to form double-deck valve seat with outer seat 3, the surface of contact of spool is shaped with Double-ladder formula annular sealing surface (in figure non-label), and this Double-ladder formula annular sealing surface seals with interior valve seat and outer seat respectively and contacts;
Be described with accompanying drawing direction, outer seat is columnar structured, in outer seat, be shaped with internal projecting ring, the coaxial spacing suit internal valve seat in outer seat;
In order to enable interior valve seat form selfsealings in outer seat, between radial one end and valve body of interior valve seat, radial equipartition is provided with multiple spring 5, leaves gap between the radial the other end of interior valve seat and the internal projecting ring of outer seat.Multiple spring provides pretightening force, make by interior valve seat upwards jack-up until hold out against the internal projecting ring of outer seat.
In order to ensure sealing, between outer seat and the radial surface of contact of valve body, interval is provided with many annular outer seat seal rings 7; Interior valve seat insert 6 is installed between interior valve seat and the radial surface of contact of outer seat.
The assembling method of this structure: (1) first interior valve seat insert and spring assembling are formed interior valve component, is (2) coaxially arranged on interior valve component in outer seat, and interior valve seat can relative movement between valve body and outer seat; (3) at outer seat, outer seat seal ring is installed outward; (4) the outer seat that interior valve seat is housed is loaded in valve body, (5) outer seat is fastened fixing with valve pocket again; (6) spool is installed; (7) complete assembling.
The working procedure of this structure:
(1) in valve open procedure:
Spool moves upward, and first spool throws off with outer seat sealing surface; Meanwhile, under the effect of spring and medium power, interior valve seat moves upward, and interior sealing surface of seat still contacts with valve core sealed cover, forms self sealing structure; When interior valve seat moves upward to restraining position, interior sealing surface of seat and valve core sealed cover are thrown off, valve opening;
(2) valve closing process:
Spool moves downward, and spool first contacts with interior sealing surface of seat, under pressure medium and spring action, form selfsealings; When valve continues to close, interior valve seat moves downward, when spool contacts with outer seat sealing surface, form secondary seal, even if interior sealing surface of seat hinder by the granule foreign in medium and seal timeliness, seal action also not exclusively disappears, and only can produce small penetrability and scratch, but it can play the effect of cleaning sealing surface, stop that impurity and particulate matter seal away from next stage.
This structure is particularly useful for, containing particulate matter mixture condition, improving life of valve.Be applicable to the cut-off throttle valve under bad working environments.
Although disclose embodiment of the present utility model and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the utility model and claims, various replacement, change and amendment are all possible, therefore, scope of the present utility model is not limited to the content disclosed in embodiment and accompanying drawing.
Claims (5)
1. a double-valve-seat self sealing structure, comprise valve body, valve pocket, spool, interior valve seat and outer seat, medium channel is shaped with in valve body, a valve pocket is coaxially fixed with in the valve body of MEDIA FLOW to end, in this valve pocket, guiding drive installation has a spool, spool is coaxially fixed with valve seat towards MEDIA FLOW in the valve body of one end, spool contacts with valve base sealing, it is characterized in that: described valve seat adopts the interior valve seat of coaxial cascade coaxial package and outer seat to form double-deck valve seat, the surface of contact of spool is shaped with Double-ladder formula annular sealing surface, this Double-ladder formula annular sealing surface seals with interior valve seat and outer seat respectively and contacts.
2. double-valve-seat self sealing structure according to claim 1, is characterized in that: described outer seat is columnar structured, in outer seat, be shaped with internal projecting ring, the coaxial spacing suit internal valve seat in outer seat.
3. double-valve-seat self sealing structure according to claim 1, is characterized in that: between radial one end of described interior valve seat and valve body, radial equipartition is provided with multiple spring, leaves gap between the radial the other end of interior valve seat and the internal projecting ring of outer seat.
4. double-valve-seat self sealing structure according to claim 1, is characterized in that: between described outer seat and the radial surface of contact of valve body, interval is provided with many annular outer seat seal rings.
5. double-valve-seat self sealing structure according to claim 1, is characterized in that: be provided with interior valve seat insert between described interior valve seat and the radial surface of contact of outer seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520870039.9U CN205118264U (en) | 2015-11-03 | 2015-11-03 | Bivalve seat is from seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520870039.9U CN205118264U (en) | 2015-11-03 | 2015-11-03 | Bivalve seat is from seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205118264U true CN205118264U (en) | 2016-03-30 |
Family
ID=55573878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520870039.9U Active CN205118264U (en) | 2015-11-03 | 2015-11-03 | Bivalve seat is from seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205118264U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221758A (en) * | 2015-11-03 | 2016-01-06 | 天津百利展发集团有限公司 | A kind of double-valve-seat self sealing structure |
| CN110242757A (en) * | 2019-06-20 | 2019-09-17 | 江苏神通阀门股份有限公司 | A kind of helium grade elasticity Double sealing globe valve valve flap structure |
-
2015
- 2015-11-03 CN CN201520870039.9U patent/CN205118264U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221758A (en) * | 2015-11-03 | 2016-01-06 | 天津百利展发集团有限公司 | A kind of double-valve-seat self sealing structure |
| CN110242757A (en) * | 2019-06-20 | 2019-09-17 | 江苏神通阀门股份有限公司 | A kind of helium grade elasticity Double sealing globe valve valve flap structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |