CN203146924U - Maintainable lift check valve - Google Patents
Maintainable lift check valve Download PDFInfo
- Publication number
- CN203146924U CN203146924U CN 201320127181 CN201320127181U CN203146924U CN 203146924 U CN203146924 U CN 203146924U CN 201320127181 CN201320127181 CN 201320127181 CN 201320127181 U CN201320127181 U CN 201320127181U CN 203146924 U CN203146924 U CN 203146924U
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- Prior art keywords
- valve
- spool
- head
- valve seat
- valve head
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- Expired - Fee Related
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Abstract
The utility model relates to the technical field of valves, in particular to a maintainable lift check valve. The maintainable lift check valve comprises a valve body, a valve clack and a valve seat, wherein the valve body is arranged on the upper portion of the valve seat, the valve clack is arranged inside the valve body, the valve clack comprises a valve head and a valve rod, a sealing surface of the valve head and a sealing surface of the valve rod form a sealing pair, an annular groove is formed in a sealing surface on the upper portion of the valve seat, a material pouring hole which is communicated with the outer side wall of the valve seat is formed in the bottom of the groove, and a screwed plug is arranged in an opening at the outer side end of the material pouring hole. The maintainable lift check valve has the advantages of being simple and reasonable in structure, convenient to maintain, and long in service life.
Description
Technical field
The utility model relates to a kind of valve technology field, but a kind of maintenance lifting formula safety check specifically.
Background technique
Safety check claims one-way valve or check valve again, belongs to the self-acting valve class, is mainly used on the pipeline of medium one-way flow, only allows medium to flow to a direction, to try to avert accidents.Wherein Lift check valve is comparatively use always a kind of, is generally the low in and high out formula, and fluid makes the flap of valve open under pressure, and flows to outlet side from suction side.When suction side pressure was lower than outlet side, flap automatically with pathway closure, stoped fluid countercurrent current under the effect of hydrodynamic pressure and gravity own.Flap is because guide rod and valve head are formed, and during valve closing, the sealing surface of valve head and valve seat forms sealing pair, and during valve opening, valve head rising promotion guide rod moves up along the guide sleeve of valve body.When traditional safety check was opened, the flap opening degree was unadjustable, after valve uses a period of time, can cause leakage behind the sealing surface wear between valve head and the valve seat, revealed valve and was inconvenient to safeguard, must disassemble and keep in repair, and influenced the user and used.
Summary of the invention
The utility model provides a kind of simple and reasonable for structure, easy to maintenance, long service life, the Lift check valve that the flap opening degree can be regulated in order to overcome above-mentioned defective.
The technical solution adopted in the utility model is: but a kind of maintenance lifting formula safety check, comprise valve body, flap and valve seat, valve body is arranged on valve seat top, flap is arranged in the valve body, flap comprises valve head and valve rod, and the sealing surface of valve head and the sealing surface of valve seat form sealing pair, and it is characterized in that: the sealing surface on valve seat top is provided with annular groove, bottom portion of groove is provided with the material hole that communicates with the valve seat outer side wall, is provided with plug in the outboard end opening of material hole; Described flap also comprises spool, the cylindrical cavity of valve head, be provided with vertical keyway in the distribution of valve head inwall, spool is discoid, is arranged in the valve head, is fixedly connected with and the corresponding key tooth of keyway along the circumference of spool, the key tooth stretches in the keyway and between the width of key tooth and keyway the space, the height of valve head chamber is greater than the thickness of spool, and valve rod is fixedly connected on spool top, and the top of valve rod is stretched out the valve body outside and is connected with transmission device.
In the utility model, the annular replace block that is complementary is set in the annular groove of valve seat, also is provided with the groove of annular on the top of replace block, this annular bottom portion of groove is provided with the through hole that communicates with material hole.
In the utility model, described spool is positioned at the valve head inner bottom part, is provided with cushion block between the top board of spool top and valve head, and cushion block is sheathed on the valve rod outside.
In the utility model, be provided with sealing block at the middle part of valve rod, when valve rod was positioned at the valve wide open state, sealing block was close proximity to the valve body top, stretched out top, hole at the valve rod of valve body and was provided with lip ring.
The utility model has designed annular groove at the sealing surface on valve seat top, the sidepiece of valve seat is provided with material hole and is communicated with annular groove, when valve leak, after closing the border valve, inject grinding paste by material hole and to annular groove, arrive the sealing surface place, rotate valve head and grind, just can repair sealing surface, long service life need not to dismantle valve and just can keep in repair; When in equipment running process, occurring leaking, can also annotate sealer to annular groove by material hole, with the shutoff sealing surface; The utility model can also will not have the leak detection of pressure after suppressing equipment and material hole being connected, reduce the leak detection cost; The utility model can also be by regulating valve stem the height of height restriction spool, the so just opening degree of adjustable valve head, thus realize the inflow-rate of water turbine of adjusting safety check.The utility model increases cushion block in the valve head of safety check, make valve rod directly drive valve head by spool and move up and down, and so just forms the structure of shutoff valve, and is applied widely.
Description of drawings
Fig. 1 is the utility model embodiment 1 schematic representation.
Fig. 2 is the utility model embodiment 2 schematic representation.
Embodiment
Now by reference to the accompanying drawings the utility model is further described, Fig. 1 is the utility model embodiment 1 schematic representation, comprise valve body 1, flap and valve seat 2, valve body 1 is arranged on valve seat 2 tops, and flap is arranged in the valve body 1, and flap comprises valve head 3 and valve rod 4, the sealing surface of the sealing surface of valve head 3 and valve seat 2 forms sealing pair, the sealing surface on valve seat 2 tops is provided with annular groove, and bottom portion of groove is provided with the material hole 5 that communicates with valve seat 2 outer side walls, is provided with plug in the outboard end opening of material hole 5.Described flap also comprises spool 6, valve head 3 cylindrical cavitys, be provided with vertical keyway in the distribution of valve head 3 inwalls, spool 6 is discoid, be arranged in the valve head 3, circumference along spool 6 is fixedly connected with and the corresponding key tooth of keyway, the key tooth stretches in the keyway and between the width of key tooth and keyway the space, the height of valve head 3 cavitys is greater than the thickness of spool 6, valve rod 4 is fixedly connected on spool 6 tops, the top of valve rod 4 is stretched out valve body 1 outside and is connected with transmission device, and valve rod 4 tops in the utility model can be connected with transmission device by shaft joint.In the present embodiment, the annular replace block that is complementary is set also in the annular groove of valve seat 2, also is provided with the groove of annular on the top of replace block, this annular bottom portion of groove is provided with the through hole that communicates with material hole 5.Replace block is set conveniently replaces the annular groove part of serious wear, need not to change whole valve seat 2, save material.
Usually after valve uses a period of time, valve head 3 can be impaired because of various reasons with the sealing surface of valve seat 2, the contact imprecision occurs and form leakage, at this moment, utilize transmission device to make valve rod 4 drive valve head 3 and be moved down into the bottom, and then inject abrasives in the material hole on the valve seat 25, make abrasive to annular groove, arrive the sealing surface place, rotation valve rod 4 then, valve rod 4 drives valve heads 3 and rotates, and is that surface of contact grinds to the sealing surface of valve head 3 and valve seat 2, can keep in repair the slight leakage of valve like this, and need not to replace whole valve, reduce cost.If during the equipment operation, the leakage that occurs behind the throttle down can be by injecting sealer in material hole 5, make sealer arrive and be full of the groove of valve seat 2 upper, annular, by using sealer that valve head 3 and valve seat 2 are sealed, stop a leak the operation of not influence equipment like this.
When equipment is stopped transport, the utility model can also not have the leak detection of pressure: valve head 3 is fallen make valve closing, use is suppressed equipment and is connected with material hole 5, and press water injected material hole 5, whether press water leaks in order to detect between valve seat 2 and the valve head 3 in material hole 5 enters the groove of annular on valve seat 2 tops.Traditional leak detection must allow equipment operation, makes to be full of pressure in the pipeline and could to detect, and wastes energy and material.Present embodiment can also limit the height of spool 6 by regulating valve stem 4, regulates the opening degree of valve head 3, thereby realizes regulating the inflow-rate of water turbine of safety check.
Fig. 2 is the utility model embodiment 2 schematic representation, embodiment 2 is in comprising embodiment 1 the whole technological scheme, also comprise following technological scheme: described spool 6 is positioned at valve head 3 inner bottom parts, be provided with cushion block 13 between the top board of spool 6 tops and valve head 3, cushion block 13 is sheathed on valve rod 4 outsides.Like this, spool 6 just can not move up and down along valve head 3 inner chambers, just directly drives valve head 3 when valve rod 4 moves up and down and moves up and down, and valve head 3 can only be done movement up or down under valve rod 4 drives, make safety check become stop valve and use.In the present embodiment, middle part at valve rod 4 also is provided with sealing block 11, when valve rod 4 is positioned at the valve wide open state, sealing block 11 is close proximity to valve body 1 inside top, stretch out top, hole at the valve rod 4 of valve body 1 and be provided with lip ring 12, Sealing 12 in the present embodiment is sealed packing, can also be O-ring seal.
Valve among the embodiment 2 is when opening or closing, and its working procedure such as traditional stop valve drive valve heads 3 by transmission device by valve rod 4 and move up and down, thereby realizes the unlatching of valve or close.Embodiment 2 can realize the maintenance function among the embodiment 1 equally, as: can grind the sealing surface of valve seat 2 with valve head 3 behind the sealing surface wear; When leaking, the equipment operation can inject the nothing pressure leak detection that sealer carries out shutoff and the equipment of realization to sealing surface.Embodiment 2 can improve the sealing effect of valve by sealing block 11 being set at valve rod 4 and on valve body 1 top Sealing 12 being set.
The utlity model has simple and reasonable for structure, easy to maintenance, the characteristics of long service life.
Claims (4)
1. but maintenance lifting formula safety check, comprise valve body, flap and valve seat, valve body is arranged on valve seat top, flap is arranged in the valve body, flap comprises valve head and valve rod, and the sealing surface of valve head and the sealing surface of valve seat form sealing pair, and it is characterized in that: the sealing surface on valve seat top is provided with annular groove, bottom portion of groove is provided with the material hole that communicates with the valve seat outer side wall, is provided with plug in the outboard end opening of material hole; Described flap also comprises spool, the cylindrical cavity of valve head, be provided with vertical keyway in the distribution of valve head inwall, spool is discoid, is arranged in the valve head, is fixedly connected with and the corresponding key tooth of keyway along the circumference of spool, the key tooth stretches in the keyway and between the width of key tooth and keyway the space, the height of valve head chamber is greater than the thickness of spool, and valve rod is fixedly connected on spool top, and the top of valve rod is stretched out the valve body outside and is connected with transmission device.
2. but maintenance lifting formula safety check according to claim 1, it is characterized in that: the annular replace block that is complementary is set in the annular groove of valve seat, also be provided with the groove of annular on the top of replace block, this annular bottom portion of groove is provided with the through hole that communicates with material hole.
But 3. maintenance lifting formula safety check according to claim 1, it is characterized in that: described spool is positioned at the valve head inner bottom part, is provided with cushion block between the top board of spool top and valve head, and cushion block is sheathed on the valve rod outside.
4. but according to each described maintenance lifting formula safety check in the claim 1 to 3, it is characterized in that: the middle part at valve rod is provided with sealing block, when valve rod was positioned at the valve wide open state, sealing block was close proximity to the valve body top, stretched out top, hole at the valve rod of valve body and was provided with lip ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320127181 CN203146924U (en) | 2013-03-20 | 2013-03-20 | Maintainable lift check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320127181 CN203146924U (en) | 2013-03-20 | 2013-03-20 | Maintainable lift check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146924U true CN203146924U (en) | 2013-08-21 |
Family
ID=48974448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320127181 Expired - Fee Related CN203146924U (en) | 2013-03-20 | 2013-03-20 | Maintainable lift check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146924U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836203A (en) * | 2014-02-18 | 2014-06-04 | 潘健 | Valve with double valve heads capable of being sealed |
-
2013
- 2013-03-20 CN CN 201320127181 patent/CN203146924U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836203A (en) * | 2014-02-18 | 2014-06-04 | 潘健 | Valve with double valve heads capable of being sealed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20170320 |