CN109281828A - A kind of valve seat - Google Patents
A kind of valve seat Download PDFInfo
- Publication number
- CN109281828A CN109281828A CN201811090855.2A CN201811090855A CN109281828A CN 109281828 A CN109281828 A CN 109281828A CN 201811090855 A CN201811090855 A CN 201811090855A CN 109281828 A CN109281828 A CN 109281828A
- Authority
- CN
- China
- Prior art keywords
- hole
- valve seat
- central
- core
- cylindrical surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1087—Valve seats
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
A kind of valve seat is made of a core and a body；The core has a left side, a right side and an intermediate cylindrical surface and a central through hole and multiple oblique through holes；The central through hole is located between the left side and the right side；Multiple oblique through hole is located in the region of intermediate cylindrical surface encirclement；Multiple oblique through hole is tilted to the central through hole center from right to left, their left end is gone directly the left side；The body has an intermediate circular hole wall surface of the hole；The intermediate cylindrical surface and the intermediate circular hole wall surface of the hole are formed and are interference fitted.It is interference fitted since core and body are formed, the stress state of valve seat is improved in use, thoroughly solves the technical issues of valve seat generates radial cracking.
Description
Technical field
The present invention relates to valves, and in particular to a kind of valve seat.
Background technique
Currently, in the dissolving device of alumina producing enterprise of China, using sheath tube heater to aluminum hydroxide solution
It is heated, to dissolve out hydrated alumina.In the inner tube heating process to sheath tube heater, meeting on the inner wall of inner tube
Have it is very thick, very hard scab, hardness close to potsherd, thickness in 20~40mm, it is even thicker, harder, it is necessary in time
It removes these to scab, production can just continue.It is purged for this purpose, being scabbed using alumina scale cleaning pump group to these.
Alumina scale cleaning pump group has a liquid in-out valve group for being mounted on plunger pump cylinder body one end, and liquid in-out valve group has a valve
Seat.
Referring to figs. 7 and 8, which indicates.
Valve seat 200 has a left side 210, a right side 220, one first cylindrical surface 230, a circular conical surface 260, one second
Cylindrical surface 240 and a third cylindrical surface 250.
Valve seat 200 has a central through hole 270.
It is spaced certain arc length on the second cylindrical surface 240 and is provided with multiple blind holes 241.It is provided with from right to left in valve seat 200
To the inclined multiple inclined holes 211 in 270 center of central through hole.One end of inclined hole 211 is connected to blind hole 241, the other end and left side
An annular groove 212 connection on 210.
By the effect of low elastic spring (not shown), a low pressure valve plate (not shown) covers the surface outside annular groove 212 i.e.
On left side 210.
By the effect of high elastic force spring (not shown), a high pressure valve plate (not shown) is covered outside 270 right end of central through hole
On surface, that is, right side 220.
When alumina scale clears up pump group work, low pressure liquid enter after multiple blind holes 241 of valve seat 200 flow into it is multiple tiltedly
Hole 211 overcomes the elastic force of low elastic spring to open low pressure valve plate, into plunger pump cylinder body (not shown) and central through hole 270,
After being pressed into highly pressurised liquid, the elastic force of high elastic force spring is overcome to open high pressure valve plate, from plunger pump cylinder body and central through hole 270
Interior outflow is made to remove to scab to be used.
In this process, the highly pressurised liquid in the central through hole 270 of valve seat 200 applies very 270 inner wall of central through hole
Big pressure, to generate very big tangential stress in the cross section of valve seat 200, tangential stress is from central through hole 270
The closer the distance of the heart the bigger, simultaneously as having multiple blind holes 241 and multiple inclined holes 211 in valve seat 200, makes multiple blind holes 241
It is weakened with the intensity of multiple 211 regions of inclined hole, since multiple inclined holes 211 incline to 270 center of central through hole from right to left
Tiltedly, it is weakened the intensity closer to 270 center of central through hole and closer 210 region of left side more serious, to cause
200 left side 210 of valve seat generates radial cracking adjacent to the region surface of central through hole 270, causes valve seat 200 that cannot continue to make
With.
Summary of the invention
The invention solves the liquid in-out valves for being mounted on plunger pump cylinder body one end of existing alumina scale cleaning pump group
Valve seat the technical issues of generating radial cracking in use, a kind of improved valve seat is provided.
Valve seat of the invention, which is characterized in that the valve seat is made of a core and a body；The core has a left end
Face, a right side and an intermediate cylindrical surface and a central through hole and multiple oblique through holes；The central through hole be located at the left side and
Between the right side；Multiple oblique through hole is located in the region of intermediate cylindrical surface encirclement；Multiple oblique through hole from right to left to
Central through hole center inclination, their left end is gone directly the left side；The body has an intermediate circular hole wall surface of the hole；The middle circle
Cylinder and the intermediate circular hole wall surface of the hole are formed and are interference fitted.
Valve seat of the invention, since the intermediate cylindrical surface of core and the intermediate circular hole wall surface of the hole of body are formed and are interference fitted,
The pre-compression stress generated in core cross-sectional counteracts most of due in the highly pressurised liquid pair in the central through hole of valve seat
Very big tangential stress of the very big pressure that heart through-hole wall applies to generate in the cross section of valve seat, thoroughly solves
Valve seat generates the technical issues of radial cracking.
Detailed description of the invention
Fig. 1 is the longitudinal profile of valve seat of the present invention；
Fig. 2 is the left view schematic diagram of valve seat of the present invention shown in Fig. 1；
Fig. 3 is the longitudinal profile of the core of valve seat of the present invention shown in Fig. 1；
Fig. 4 is the left view schematic diagram of the core of valve seat of the present invention shown in Fig. 3；
Fig. 5 is the longitudinal profile of the body of valve seat of the present invention shown in Fig. 1；
Fig. 6 is the left view schematic diagram of the body of valve seat of the present invention shown in Fig. 5；
Fig. 7 is the valve seat of the liquid in-out valve for being mounted on plunger pump cylinder body one end of existing alumina scale cleaning pump group
Longitudinal profile；
Fig. 8 is the left view schematic diagram of valve seat shown in Fig. 7.
Specific embodiment
Specific embodiments of the present invention will be described in detail with reference to the accompanying drawing, the feature and advantage of valve seat of the present invention
It will be apparent.
Referring to Fig. 1 and Fig. 2, valve seat 100 of the invention is made of a core 1 and a body 2.It is made of core 1 and body 2
The contour structures of valve seat 100 of the invention and the structure of all well and Fig. 7 and existing alumina scale shown in Fig. 8 clear up
The contour structures of the valve seat of the liquid in-out valve group for being mounted on plunger pump cylinder body one end of pump group are identical with the structure of all well.
Referring to Fig. 3 and Fig. 4, the peace of the construction and Fig. 7 of core 1 and existing alumina scale cleaning pump group shown in Fig. 8
Construction mounted in the valve seat of the liquid in-out valve group of plunger pump cylinder body one end is largely identical, the identical label table in identical part
Show, is not repeated to describe.The two construction the difference is that, core 1 have an intermediate cylindrical surface 11 and a middle circle anchor ring 12.
Referring to figs. 5 and 6, the peace of the construction of body 2 and Fig. 7 and existing alumina scale cleaning pump group shown in Fig. 8
Construction portion mounted in the valve seat of the liquid in-out valve group of plunger pump cylinder body one end is identical, the identical label table in identical part
Show, is not repeated to describe.The two construction the difference is that, body 2 have an intermediate circular hole wall surface of the hole 21 and a middle circle
End face 22.
Core 1 is fitted together with body 2, and intermediate cylindrical surface 11 and intermediate circular hole wall surface of the hole 21 are formed and be interference fitted.It crosses
Cooperation of being full of makes core 1 bear external pressure, and body 2 bears internal pressure, correspondingly produces pre-compression stress in 1 cross section of core,
Body produces prestretching stress in 2 cross section, when valve seat 100 works, the pre-compression stress that is generated in 1 cross section of core
Counteract most of very big pressure applied due to the highly pressurised liquid in the central through hole 270 of valve seat 100 to 270 inner wall of central through hole
Very big tangential stress of the power to generate in the cross section of valve seat 100 thoroughly solves valve seat 100 and generates radial cracking
The technical issues of.
Claims (1)
1. a kind of valve seat, which is characterized in that the valve seat is made of a core and a body；The core has a left side, a right side
End face and an intermediate cylindrical surface and a central through hole and multiple oblique through holes；The central through hole is located at the left side and the right side
Between；Multiple oblique through hole is located in the region of intermediate cylindrical surface encirclement；Multiple oblique through hole is logical to the center from right to left
The inclination of hole center, their left end is gone directly the left side；The body has an intermediate circular hole wall surface of the hole；The intermediate cylindrical surface with should
Intermediate circular hole wall surface of the hole forms interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811090855.2A CN109281828A (en) | 2018-09-19 | 2018-09-19 | A kind of valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811090855.2A CN109281828A (en) | 2018-09-19 | 2018-09-19 | A kind of valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109281828A true CN109281828A (en) | 2019-01-29 |
Family
ID=65181374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811090855.2A Pending CN109281828A (en) | 2018-09-19 | 2018-09-19 | A kind of valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109281828A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100140526A1 (en) * | 2008-12-04 | 2010-06-10 | Forrest Jamie A | High pressure water pump valve and seal structure |
| CN103195700A (en) * | 2013-04-28 | 2013-07-10 | 天津市精诚高压泵制造有限责任公司 | High-pressure pump valve seat |
| EP3001036A1 (en) * | 2014-09-20 | 2016-03-30 | Sugino Machine Limited | Fluid coupling |
-
2018
- 2018-09-19 CN CN201811090855.2A patent/CN109281828A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100140526A1 (en) * | 2008-12-04 | 2010-06-10 | Forrest Jamie A | High pressure water pump valve and seal structure |
| CN103195700A (en) * | 2013-04-28 | 2013-07-10 | 天津市精诚高压泵制造有限责任公司 | High-pressure pump valve seat |
| EP3001036A1 (en) * | 2014-09-20 | 2016-03-30 | Sugino Machine Limited | Fluid coupling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190129 |