CN204664502U - A kind of safety check pre-pressing structure - Google Patents
A kind of safety check pre-pressing structure Download PDFInfo
- Publication number
- CN204664502U CN204664502U CN201520313756.1U CN201520313756U CN204664502U CN 204664502 U CN204664502 U CN 204664502U CN 201520313756 U CN201520313756 U CN 201520313756U CN 204664502 U CN204664502 U CN 204664502U
- Authority
- CN
- China
- Prior art keywords
- metal tube
- hollow metal
- safety check
- platform
- regulation structure
- 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
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- Check Valves (AREA)
Abstract
In order to solve deficiency of the prior art, the utility model designs a kind of safety check pre-pressing structure especially, be made up of regulation structure, pretension platform, regulation structure is connected by hollow metal tube with pretension platform, wherein pretension platform and hollow metal tube are integral type structural design, and regulation structure and hollow metal tube are for being flexibly connected; Described pretension platform is provided with check-valve spring interface arrangment, described interface arrangment geomery and spring sizes match, described regulation structure adopts with hollow metal tube and is threaded, this pre-pressing structure is used for safety check, the external diameter of described hollow metal tube and the central hole size of check valve receptacle match, and the internal diameter of hollow metal tube and the size of flap shaft match; The defect existed in prior art can well be made up, the problems such as the long-time usability decline of spring or inefficacy can well be prevented.
Description
Technical field
The utility model relates to valve technology field, particularly a kind of safety check pre-pressing structure.
Background technique
Safety check relies on medium itself to flow and automatic open and close flap, be used for the valve preventing medium from flowing backwards, belong to a kind of automatic valve, its Main Function prevents medium from flowing backwards, prevents pump and drive motor reversion, and the releasing of vessel media, and safety check of the prior art is set in spring on flap along with long use, performance can decline to some extent, the elastic force of spring reduces, and flap can be caused just to open flap when smaller hydraulic pressure impacts, and occurs the problems such as unknown leakage.
Model utility content
In order to solve deficiency of the prior art, the utility model designs a kind of safety check pre-pressing structure especially, this structure, for check valve body, can well make up the defect existed in prior art, can well prevent the problems such as the long-time usability decline of spring or inefficacy.
The technical solution of the utility model is: a kind of safety check pre-pressing structure, be made up of regulation structure, pretension platform, regulation structure is connected by hollow metal tube with pretension platform, and wherein pretension platform and hollow metal tube are integral type structural design, and regulation structure and hollow metal tube are for being flexibly connected; Described pretension platform is provided with check-valve spring interface arrangment, and described interface arrangment geomery and spring sizes match.
Described interface arrangment is circular arc platform structure;
Further, described interface arrangment can also be ring groove;
Described regulation structure adopts with hollow metal tube and is threaded.
This pre-pressing structure is used for safety check, and the external diameter of described hollow metal tube and the central hole size of check valve receptacle match, and the internal diameter of hollow metal tube and the size of flap shaft match.
The beneficial effects of the utility model are that the pre-pressing structure of this structural design is for safety check, pre-pressing structure is arranged on valve base center hole, safety check flap shaft is set in the metal hollow pipe of pre-pressing structure, spring one end on safety check flap is fixedly connected with flap, the other end is connected in the interface arrangment of pre-pressing structure, the flexible of pretension platform can be regulated by the regulation structure on pre-pressing structure, pretension can be carried out to spring by the flexible of pretension position of platform, the problems such as spring hydraulic performance decline or inefficacy can well be avoided.
Accompanying drawing explanation
Fig. 1 is the structural representation of this pre-pressing structure for safety check;
Fig. 2 is the main TV structure schematic diagram 1 of this model utility;
Fig. 3 is the left TV structure schematic diagram 1 of this model utility;
Fig. 4 is the main TV structure schematic diagram 2 of this model utility;
Fig. 5 is the left TV structure schematic diagram 2 of this model utility;
In figure: 1, valve body; 2, flap body; 3, flap shaft; 4, valve seat; 5, spring; 6, pre-pressing structure; 7, regulation structure; 8, pretension platform; 9, interface arrangment.
Embodiment
As described in Fig. 2,4, a kind of safety check pre-pressing structure, be made up of regulation structure 7, pretension platform 8, regulation structure 7 is connected by hollow metal tube with pretension platform 8, wherein pretension platform 8 and hollow metal tube are integral type structural design, and regulation structure 7 and hollow metal tube are for being flexibly connected; Described pretension platform 8 is provided with check-valve spring interface arrangment 9, and described interface arrangment 9 geomery and spring sizes match.
As shown in Figure 3, described interface arrangment 9 is circular arc platform structure;
As shown in Figure 5, further, described interface arrangment 9 can also be ring groove;
Described regulation structure 7 adopts with hollow metal tube and is threaded.
This pre-pressing structure is used for safety check, and the external diameter of described hollow metal tube and the central hole size of check valve receptacle 4 match, and the internal diameter of hollow metal tube and the size of flap shaft 3 match.
As shown in Figure 1, adopt the safety check of this pre-pressing structure, comprise valve body 1, flap and valve seat 4, seal ring is designed with between valve body 1 and flap, described flap comprises flap body 2 and flap shaft 3, flap shaft 3 and flap body 2, for being flexibly connected, flap shaft 3 are designed with position structure near flap body 2 end; Valve base center hole is provided with pre-pressing structure 6, this pre-pressing structure 6 one end is set in flap shaft 3, is pretension platform 8, described pretension platform 8 is provided with interface arrangment 9 near flap shaft 3 one end; Pre-pressing structure 6 is provided with regulation structure 7 at valve seat 4 away from flap end; Flap shaft 3 is arranged with spring 5, spring 5 one end is fixed on flap by the position structure in flap shaft 3, and the pretension platform 8 of the other end and pre-pressing structure 6 offsets, and described valve seat 4 is connected and fixed with valve body 1.
Claims (3)
1. a safety check pre-pressing structure, be made up of regulation structure, pretension platform, it is characterized in that: described regulation structure is connected by hollow metal tube with pretension platform, wherein pretension platform and hollow metal tube are integral type structural design, and regulation structure and hollow metal tube are for being flexibly connected; Described pretension platform is provided with check-valve spring interface arrangment.
2. a kind of safety check pre-pressing structure according to claim 1, is characterized in that: described interface arrangment is circular arc platform structure.
3. a kind of safety check pre-pressing structure according to claim 1, is characterized in that: described regulation structure adopts with hollow metal tube and is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520313756.1U CN204664502U (en) | 2015-05-15 | 2015-05-15 | A kind of safety check pre-pressing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520313756.1U CN204664502U (en) | 2015-05-15 | 2015-05-15 | A kind of safety check pre-pressing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204664502U true CN204664502U (en) | 2015-09-23 |
Family
ID=54134885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520313756.1U Expired - Fee Related CN204664502U (en) | 2015-05-15 | 2015-05-15 | A kind of safety check pre-pressing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204664502U (en) |
-
2015
- 2015-05-15 CN CN201520313756.1U patent/CN204664502U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20160515 |