CN204592435U - A kind of safety check - Google Patents
A kind of safety check Download PDFInfo
- Publication number
- CN204592435U CN204592435U CN201520092637.8U CN201520092637U CN204592435U CN 204592435 U CN204592435 U CN 204592435U CN 201520092637 U CN201520092637 U CN 201520092637U CN 204592435 U CN204592435 U CN 204592435U
- Authority
- CN
- China
- Prior art keywords
- flap
- fluid passage
- rocking bar
- limited part
- safety check
- 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.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 claims abstract description 76
- 238000009434 installation Methods 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model embodiment discloses a kind of safety check, comprise the check valve unit of two or more serial connection, described each check valve unit comprises valve body, valve gap and flap, described valve body and described valve gap form check valve chamber, described check valve chamber has fluid passage path section and fluid passage large footpath section, the roof of large footpath, described fluid passage section forms reverse flap limited part, the junction of described fluid passage path section and described fluid passage large footpath section forms forward flap limited part, described flap can be rocked to described reverse flap limited part to open described fluid passage by forward when fluid forward flow, and forward flap limited part can be rocked to closes said fluid channel by negative sense when fluid negative sense flows.The utility model embodiment safety check to be rotated On/Off fluid passage around the shaft by flap, and can effectively prevent medium from flowing backwards, its fluid resistance be less, is applicable to the occasion of larger caliber.
Description
Technical field
The utility model relates to valve technology field, particularly relates to a kind of safety check.
Background technique
Safety check relies on medium flowing itself and automatic open and close flap, is used for preventing medium from flowing backwards, prevents pump and drive motor from reversing, and the releasing of vessel media.The flap of general check valve does elevating movement along passage center line, not only structure relative complex, and fluid resistance is comparatively large, and be difficult to the occasion being applicable to larger caliber, these have impact on the combination property of safety check, are thus necessary to be improved.
Model utility content
For the defect that prior art exists, the object of the utility model embodiment is to provide a kind of structure simple safety check, can improve the performance of safety check at least in one aspect.
For solving above technical problem, the utility model embodiment provides a kind of safety check, comprise the check valve unit of two or more serial connection, described each check valve unit comprises valve body, valve gap and flap, described valve body and described valve gap form check valve chamber, described check valve chamber has fluid passage path section and fluid passage large footpath section, the roof of large footpath, described fluid passage section forms reverse flap limited part, the junction of described fluid passage path section and described fluid passage large footpath section forms forward flap limited part, described flap can be rocked to described reverse flap limited part to open described fluid passage by forward when fluid forward flow, and forward flap limited part can be rocked to closes said fluid channel by negative sense when fluid negative sense flows.
More preferably, the top of described check valve chamber has rocking bar installation cavity, and rotating rocking bar is installed on the described rocking bar installation cavity above described forward flap limited part, and the described rocking bar that described flap is fixed on swings.
More preferably, comprise the check valve unit of two or more serial connection, described each check valve unit comprises valve body, valve gap and flap, described valve body and described valve gap form check valve chamber, described check valve chamber has fluid passage path section and fluid passage large footpath section, the roof of large footpath, described fluid passage section forms reverse flap limited part, the junction of described fluid passage path section and described fluid passage large footpath section forms forward flap limited part, described flap can be rocked to described reverse flap limited part to open described fluid passage by forward when fluid forward flow, and forward flap limited part can be rocked to closes said fluid channel by negative sense when fluid negative sense flows.
More preferably, the top of described check valve chamber has rocking bar installation cavity, and rotating rocking bar is installed on the described rocking bar installation cavity above described forward flap limited part, and the described rocking bar that described flap is fixed on swings.
More preferably, described flap is spherical, and the top of described flap is installed in described rocking bar by threaded fastener.
More preferably, the top of large footpath, described fluid passage section arranges rocking bar fitting seat, and described rocking bar is by hinge in described rocking bar fitting seat, and described bearing pin is positioned by cotter pin.
More preferably, described rocking bar fitting seat is fixed on described valve gap or described rocking bar installation cavity wall.
More preferably, the connecting part of described valve gap and described valve body is provided with pad, and the side locating stud of described valve gap and described valve body is located, and opposite side stud is fastening.
More preferably, described valve gap becomes spherical, and the top of described valve gap arranges lifting bolt.
More preferably, described reverse flap limited part arranges cushion pad.
More preferably, described forward flap limited part arranges valve body boss, and the edge of described flap arranges the flap boss mated with described valve body boss.
More preferably, the outlet of import and the described fluid passage large footpath section of described fluid passage path section is located along the same line.
Compared with prior art, the flap of the utility model embodiment safety check can rotate around the shaft, it can be rocked to reverse flap limited part to open fluid passage by forward when fluid forward flow, when fluid negative sense flows, negative sense is rocked to forward flap limited part to close fluid channel fluid, can effectively prevent medium from flowing backwards.This Swing check valve fluid resistance is less, is applicable to the occasion of larger caliber, and its parts are less, and structure is relatively simple, and performance is very reliable, has good market prospects.
Accompanying drawing explanation
Fig. 1 is the median plane sectional view of a check valve unit in the utility model embodiment safety check.
Embodiment
In order to understand know-why and the working procedure of the utility model embodiment better, come to be described in detail the utility model further below in conjunction with drawings and the specific embodiments.
The utility model embodiment safety check is connected in series by plural check valve unit and forms, and each check valve unit can adopt identical structure, is described in detail below with one of them check valve unit.
See Fig. 1, represent the median plane sectional view of a check valve unit in the utility model embodiment safety check.This check valve unit (hereinafter referred to as safety check) comprises the parts such as valve body 1, flap 2, rocking bar 3, packing ring 4, hexagon nut 5, hexagon thin nut 6, bearing pin 7, cotter pin 8, locating stud 9, pad 10, valve gap 11, nut 12, stud 13, lifting bolt 14, cushion pad 15, rocking bar fitting seat 16, is described further below.
In check valve unit as shown in Figure 1: valve body 1 is approximate cydariform, and its import and outlet port arrange flange plate respectively with connecting tube or other valve; Valve gap 11 one-tenth is spherical, and the top of valve gap 11 arranges lifting bolt 14, lifts valve gap 11 to facilitate.Valve gap 11 is provided with pad 10 with the connecting part of valve body 1, and valve gap 11 is located with the side locating stud 9 of valve body 1, and opposite side stud 13, nut 12 are fastening, and valve gap 11 is connected with valve body 1.
As shown in Figure 1, valve body 1 and valve gap 11 form check valve chamber, and flap 2 swings with On/Off safety check in check valve chamber.Concrete structure is: check valve chamber has fluid passage path section A and the large footpath section B in fluid passage, and the import of this fluid passage path section A and the outlet of the large footpath section B in fluid passage are located along the same line, and are convenient to multiple safety check to be connected in series; Fluid passage path section A Zi outer to interior be expanding, D footpath, fluid passage section B from interior to outer be undergauge, contributing to improving fluid resistance affects; The junction of this fluid passage path section A and fluid passage large footpath section B forms reverse flap limited part 1.1, the roof of large footpath, fluid passage section B forms reverse flap limited part 1.2, flap 2 can be rocked to reverse flap limited part 1.2 to open fluid passage by forward when fluid forward flow, and can be rocked to forward flap limited part 1.1 to close fluid passage by negative sense when fluid negative sense flows.Like this, can On/Off safety check by the swing of flap 2, play the effect preventing reverse flow of fluids preferably.
In above-described embodiment, flap 2 is spherical, and the top of flap 2 is installed on rotatable rocking bar 3, to carry out forward and reverse swing by threaded fasteners such as packing ring 4, hexagon nut 5, hexagon thin nuts 5.The afterbody of this rocking bar 3 arranges hemisphere jut 3.1, and spacing 1.2 of reverse flap arranges cushion pad 15, to protect.Especially, forward flap limited part 1.1 arranges valve body boss 1.1.1, the edge of flap 2 arranges the flap boss 2.1 mated with valve body boss 1.1.1, and valve body boss 1.1.1 and flap boss 2.1 can adopt elastic material to make, to play buffering and seal action simultaneously.
In the present embodiment, flap 3 is fixed on rotating rocking bar 3 and swings, and effectively can prevent reverse flow of fluids.The mounting structure of this flap 2 is very compact: the top of check valve chamber has rocking bar installation cavity C, and rocking bar fitting seat 16 is fixed on valve gap 11 or rocking bar installation cavity A wall, so just above the large footpath section A in fluid passage, is provided with rocking bar fitting seat 16; Rocking bar 3 is articulated with rocking bar fitting seat 16 by bearing pin 7, after this bearing pin 7 is positioned by cotter pin 8, is installed on the rocking bar installation cavity C above forward flap limited part 1.1 by rotating rocking bar 3; After installing rocking bar 3, then flap 2 is fixedly mounted with on rocking bar 3, flap 2 just can be made to swing in fluid passage by fluid self flowing, finally realize the object of On/Off safety check.
Said structure composition Swing check valve, its flap 2 can rotate around the shaft, when fluid forward flow, forward is rocked to reverse flap limited part 1.2 to open fluid passage, when fluid negative sense flows, negative sense is rocked to forward flap limited part 1.1 to close fluid channel fluid, can effectively prevent medium from flowing backwards like this.This Swing check valve fluid resistance is less, is applicable to the occasion of larger caliber.
With upper check valve good combination property, its structure is simple, and easy to process, cost is lower, has market prospects preferably.
Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not departing from spirit and scope of the present utility model; can make possible variation and amendment, the scope that therefore protection domain of the present utility model should define with the utility model claim is as the criterion.
Claims (10)
1. a safety check, it is characterized in that, comprise the check valve unit of two or more serial connection, described each check valve unit comprises valve body, valve gap and flap, described valve body and described valve gap form check valve chamber, described check valve chamber has fluid passage path section and fluid passage large footpath section, the roof of large footpath, described fluid passage section forms reverse flap limited part, the junction of described fluid passage path section and described fluid passage large footpath section forms forward flap limited part, described flap can be rocked to described reverse flap limited part to open described fluid passage by forward when fluid forward flow, and forward flap limited part can be rocked to closes said fluid channel by negative sense when fluid negative sense flows.
2. safety check as claimed in claim 1, it is characterized in that, the top of described check valve chamber has rocking bar installation cavity, and rotating rocking bar is installed on the described rocking bar installation cavity above described forward flap limited part, and the described rocking bar that described flap is fixed on swings.
3. safety check as claimed in claim 2, it is characterized in that, described flap is spherical, and the top of described flap is installed in described rocking bar by threaded fastener.
4. safety check as claimed in claim 2, it is characterized in that, the top of large footpath, described fluid passage section arranges rocking bar fitting seat, and described rocking bar is by hinge in described rocking bar fitting seat, and described bearing pin is positioned by cotter pin.
5. safety check as claimed in claim 4, it is characterized in that, described rocking bar fitting seat is fixed on described valve gap or described rocking bar installation cavity wall.
6. safety check as claimed in claim 1, it is characterized in that, the connecting part of described valve gap and described valve body is provided with pad, and the side locating stud of described valve gap and described valve body is located, and opposite side stud is fastening.
7. safety check as claimed in claim 1, it is characterized in that, described valve gap becomes spherical, and the top of described valve gap arranges lifting bolt.
8. safety check as claimed in claim 1, it is characterized in that, described reverse flap limited part arranges cushion pad.
9. safety check as claimed in claim 1, it is characterized in that, described forward flap limited part arranges valve body boss, and the edge of described flap arranges the flap boss mated with described valve body boss.
10. the safety check as described in any one of claim 1-9, is characterized in that, the outlet of import and the described fluid passage large footpath section of described fluid passage path section is located along the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520092637.8U CN204592435U (en) | 2015-02-10 | 2015-02-10 | A kind of safety check |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520092637.8U CN204592435U (en) | 2015-02-10 | 2015-02-10 | A kind of safety check |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204592435U true CN204592435U (en) | 2015-08-26 |
Family
ID=53928587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520092637.8U Expired - Fee Related CN204592435U (en) | 2015-02-10 | 2015-02-10 | A kind of safety check |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204592435U (en) |
-
2015
- 2015-02-10 CN CN201520092637.8U patent/CN204592435U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20150826 Termination date: 20160210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |