CN203809790U - Centrifugal water pump bottom valve - Google Patents
Centrifugal water pump bottom valve Download PDFInfo
- Publication number
- CN203809790U CN203809790U CN201420251842.XU CN201420251842U CN203809790U CN 203809790 U CN203809790 U CN 203809790U CN 201420251842 U CN201420251842 U CN 201420251842U CN 203809790 U CN203809790 U CN 203809790U
- Authority
- CN
- China
- Prior art keywords
- valve
- runway
- centrifugal water
- flap
- hoop
- 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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Abstract
The utility model relates to products for centrifugal water pumps, in particular to a centrifugal water pump bottom valve resistant to corrosion and easy to demount and mount, and solves the technical problems that the existing coal mine large-diameter bottom valve for centrifugal water pumps is high in failure rate and scrapping rate and inconvenient to maintain. The centrifugal water pump bottom valve comprises a valve body, a valve clack, a bonnet, a valve hoop, a track bolt, and a track liner; the valve hoop is arranged below the valve clack; the track liner is arranged below the valve hoop; the track bolt vertically penetrates the track liner along a center line of the valve body and is fixed at the lower center of the valve clack; the track bolt is connected with the valve clack in a threaded manner; a sealing member matching with the valve hoop is fixed below the valve clack. The valve clack, the valve hoop, the track bolt and the track liner are all made of low carbon steel plates. Practical uses show that the centrifugal water pump bottom valve is long in service life, low in failure rate, convenient to maintain, practical and economical, and high in operating efficiency.
Description
Technical field
The utility model relates to the product for Centrifugal water pump, is specially a kind of corrosion-resistant and easy-to-dismount centrifugal water pump foot valve.
Background technique
At present, colliery a large amount of heavy caliber traditional type bottom valves used are iron casting, and wherein runway bar 11 is integral type with flap, be positioned at the top, center of flap, for the spacing positioning liner plate 13 of runway bar being positioned to the top of valve inner flap, working method is rise-fall type, as shown in Figure 2; During pump working, current are flowed into by the influent stream mouth 10 of band raster on valve gap, and flap is boosted, and then by going out head piece 12, flow out; This kind of structure brought two kinds of problems, (1) because runway bar long period of soaking is in water, integral body is again that iron casting forms, and under water in waste water the content of sulphur, nitrogen higher again, this problem with regard to having caused each position to be easy to be corroded thereby caused whole valve body to reduce working life.(2) principal element is that the toughness of cast iron is poor, and in the fierce collision of flap and valve hoop frequently, flap easily breaks, and causes integral body to scrap.Therefore need to a kind ofly when corrosion-resistant and maintenance, be used for the easy-to-dismount bottom valve of component sliding.
Summary of the invention
The technical problem that the utility model is the current colliery of solution heavy caliber centrifugal water pump foot valve fault, scrappage is high, maintenance rate is inconvenient, provides a kind of centrifugal water pump foot valve.
The utility model is to adopt following technological scheme to realize: a kind of centrifugal water pump foot valve, comprises valve body, flap, valve gap, is positioned at the valve hoop of flap below; The runway liner plate that also comprises runway bolt and be located at valve hoop below; Runway bolt along valve body center line vertically through runway liner plate and be fixed on the center, below of flap; Runway bolt and flap are threaded connection; Flap below is fixed with the Sealing matching with valve hoop.
During work, water source outside valve body is from the aperture of valve gap enters, under the effect of fluid, the current jack-up that flap made progress from the space of flap and runway liner plate, after water pump is out of service, pressure in outer pipe is closed rapidly flap by flap, the Sealing of flap below contacts with valve hoop and coincide, and reaches sealing effect, and water will can not flow backwards, played unimpeded drawing water and the effect of energy saving loss, whole works stops.Traditional cast iron bottom valve, its flap and runway bar are one, according to its material, and easily break, and the utility model is because runway bar (being runway bolt) designs in flap central lower, both are that split-type design connects (being threaded), once there be damage, taking valve gap apart can keep in repair and change, and greatly reduces the cost of maintenance.And because runway bolt is positioned at flap below, after water pump quits work, can not be immersed in water as traditional bottom valve runway bar always, thereby reduced the probability that is corroded.
Further, described flap, valve hoop, runway bolt and runway liner plate are made by low carbon steel plate.
Because each position of valve internal processes by low carbon steel plate, and the anti-toughness of low carbon steel plate is much higher than cast iron, is mainly that flap should not break, thereby has reduced rate of fault and the scrappage of bottom valve, has improved whole working life.
By practice, use, the utility model long service life, failure rate is low, easy to maintenance, use practicality, saving, working efficiency high.
Accompanying drawing explanation
Fig. 1 the utility model structural representation.
Fig. 2 is conventional bottom valve structural representation at present.
1-valve body, 2-flap, 3-valve gap, 4-valve hoop, 5-runway bolt, 6-sealing gasket, 7-sealing clamp, 8-locking nut, 9-runway liner plate, 10-influent stream mouth, 11-runway bar, 12-goes out head piece, 13-positioning liner plate.
Embodiment
A centrifugal water pump foot valve, comprises valve body 1, flap 2, valve gap 3, is positioned at the valve hoop 4 of flap 2 belows; The runway liner plate 9 that also comprises runway bolt 5 and be located at valve hoop 4 belows; Runway bolt 5 along valve body 1 center line vertically through runway liner plate 9 and be fixed on the center, below of flap 2; Runway bolt 5 is threaded connection with flap 2; Flap 2 belows are fixed with the Sealing matching with valve hoop 4.
Described flap 2, valve hoop 4, runway bolt 5 and runway liner plate 9 are made by low carbon steel plate.
Pad 6 sealing together has been fixed with sealing clamp 7 and locking nut 8 in described flap 2 belows.Sealing gasket 6 is for the sealing when flap 2 and valve hoop 4 are closed.Locking nut 8 can adopt to be set on runway bolt 5 sealing clamp 7 and sealing gasket 6 are fixed.
Described flap 2 centers, below have internal thread, and runway bolt 5 is provided with outside thread, and the two connects by internal and external threads.
Flap 2 coaxially and not passes with runway bolt 5, and both rely on screw thread and are fixedly linked.
Described runway bolt 5 moving direction are by runway liner plate 9 location, and runway liner plate 9 welds together with valve hoop 4.
Claims (5)
1. a centrifugal water pump foot valve, comprises valve body (1), flap (2), valve gap (3), is positioned at the valve hoop (4) of flap (2) below; It is characterized in that: the runway liner plate (9) that also comprises runway bolt (5) and be located at valve hoop (4) below; Runway bolt (5) along valve body (1) center line vertically through runway liner plate (9) and be fixed on the center, below of flap (2); Runway bolt (5) is threaded connection with flap (2); Flap (2) below is fixed with the Sealing matching with valve hoop (4).
2. centrifugal water pump foot valve as claimed in claim 1, is characterized in that, described flap (2), valve hoop (4), runway bolt (5) and runway liner plate (9) are made by low carbon steel plate.
3. centrifugal water pump foot valve as claimed in claim 1 or 2, is characterized in that, pad sealing together (6) has been fixed with sealing clamp (7) and locking nut (8) in described flap (2) below.
4. centrifugal water pump foot valve as claimed in claim 1 or 2, is characterized in that, center, described flap (2) below has internal thread, and runway bolt (5) is provided with outside thread, and the two connects by internal and external threads.
5. centrifugal water pump foot valve as claimed in claim 3, is characterized in that, center, described flap (2) below has internal thread, and runway bolt (5) is provided with outside thread, and the two connects by internal and external threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251842.XU CN203809790U (en) | 2014-05-16 | 2014-05-16 | Centrifugal water pump bottom valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251842.XU CN203809790U (en) | 2014-05-16 | 2014-05-16 | Centrifugal water pump bottom valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809790U true CN203809790U (en) | 2014-09-03 |
Family
ID=51448540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420251842.XU Expired - Fee Related CN203809790U (en) | 2014-05-16 | 2014-05-16 | Centrifugal water pump bottom valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809790U (en) |
-
2014
- 2014-05-16 CN CN201420251842.XU patent/CN203809790U/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: 20140903 Termination date: 20170516 |