CN203892638U - Multifunctional automatic recirculating pump protection valve - Google Patents
Multifunctional automatic recirculating pump protection valve Download PDFInfo
- Publication number
- CN203892638U CN203892638U CN201420344149.7U CN201420344149U CN203892638U CN 203892638 U CN203892638 U CN 203892638U CN 201420344149 U CN201420344149 U CN 201420344149U CN 203892638 U CN203892638 U CN 203892638U
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- CN
- China
- Prior art keywords
- valve
- bypass
- control head
- groove
- throttling bodies
- Prior art date
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- Expired - Fee Related
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Abstract
A multifunctional automatic recirculating pump protection valve comprises a valve body, a guide rod, a valve clack, a spring, a valve deck, an O-shaped ring, a bypass plunger, a bypass tube, a throttling body sleeve, a sealing ring, a control head and a control rod. The whole valve is formed by a main valve and an auxiliary valve. A columnar groove is formed in the upper portion of the valve deck, the spring is arranged in the columnar groove, the guide rod is inserted into the columnar groove in the upper portion of the valve deck, a through hole with the diameter phi of 3 mm is formed in the center of the guide rod in an inner cavity of the valve deck, and a pressure reduction noise reduction pore plate is arranged on the valve clack; a through hole is formed in the lower portion of the valve clack, the control rod penetrates through the through hole and is connected with the bypass plunger of the auxiliary valve, the bypass plunger is provided with the control head and a throttling body, the throttling body sleeve is arranged between the bypass tube and the throttling body, the throttling body is arranged on the bypass plunger, the control head is installed on the front portion of the bypass plunger, the O-shaped ring is arranged between the control head and the throttling body, a groove is formed in the middle of the control head, the sealing ring is arranged in the groove, and normal operation of a water pump is maintained.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of multi-functional automatic recirculating pump-protecting valve, the functions such as collection Flow-rate adjustment, non-return, Bypass Control and step-down.
Background technique
The centrifugal pump that steel mill, power plant and chemical plant etc. adopt at present; be all, at centrifugal delivery side of pump, pump-protecting valve has been installed, be used for preventing that medium from flowing backwards, and the small flow backwater of realizing system is with the required minimum discharge of the normal operation of holding pump; improve the utilization efficiency of pump, reduced the fault of pump.Can existing pump-protecting valve be generally that main valve is spring-loaded Lift check valve, secondary valve is the throttle valve with the mechanism of decompressor, secondary valve is the mechanical connection with main road valve plate by lever realization, this structure, increase the unbalanced force of main road, increase the main road pressure loss, can produce because the bypass that uses wearing and tearing to cause is leaked; Limited by valve body structure, all internals of existing pump Protective valve must just can safeguard in valve entirety after pipeline disassembles, and the main road flow of valve and bypass flow all can not be realized on-line control, make troubles to user.
Summary of the invention
The deficiency existing for prior art; the purpose of this utility model is to provide a kind of multi-functional automatic recirculating pump-protecting valve, is made up of valve body, guide rod, flap, spring, valve gap, guide rod, O shape circle, bypass plunger, bypass tube, throttling bodies cover, throttling bodies, seal ring, control head, controlling rod.
The utility model solves the technological scheme that its technical problem adopts: whole valve is made up of main valve and secondary valve, flap top is provided with cylindrical groove, cylindrical groove arranges spring, guide rod inserts the cylindrical groove on flap top, the center of the guide rod of valve gap inner chamber part arranges the through hole of Φ 3mm, decompression noise reduction orifice plate is set on flap, and guide rod coordinates flap under spring action, to form multi-step pressure reduction structure; Flap bottom is provided with through hole, controlling rod is through through hole, the bypass plunger of controlling rod auxiliary connection valve, is moved and is driven bypass plunger motion by flap, and bypass plunger is provided with control head and throttling bodies, impurity in throttling bodies cover filter medium is set between bypass tube and throttling bodies, throttling bodies is placed on bypass plunger, and control head is arranged on bypass plunger front portion, is provided with O shape circle between control head and throttling bodies, a groove is set at the middle part of control head, in groove, is provided with seal ring.
The utility model beneficial effect: prevent from, lower than the overheated vaporization of operating overload under minimum discharge, water pump is being caused to damage, can protect cost-effectively water pump, maintain the normal operation of water pump.
Brief description of the drawings
Fig. 1 is the utility model overall structure schematic diagram;
In figure, 1. valve body, 2. guide rod, 3. flap, 4. spring, 5. valve gap, 6.O shape circle, 7. bypass plunger, 8. bypass tube, 9. throttling bodies cover, 10 throttling bodies, 11. control heads, 12. seal rings, 13. controlling rods.
Embodiment
As shown in drawings, whole valve is made up of main valve and secondary valve, main valve comprises valve body 1, guide rod 2, flap 3, spring 4, valve gap 5, flap 3 tops are provided with cylindrical groove, cylindrical groove arranges spring 4, guide rod 2 inserts the cylindrical groove on flap 3 tops, the center of the guide rod 2 of valve gap 5 inner chamber parts arranges the through hole of Φ 3mm, spring 4 chambeies of sealing are communicated with main valve inner chamber, flap 3 resistance to motion are reduced, improve the sensitivity that main valve amount of restriction changes, flap 3 upper and lower end arrange decompression noise reduction orifice plate, reduce noise and vibration, prevent cavitation, whole decompression process does not wash away valve body 1, throttleng surface coordinates with guide rod 2 apertures, realizes the adjusting of flow, extends and uses life of valve.
Flap 3 bottoms are provided with through hole, and controlling rod 13 is through through hole, and the bypass plunger 7 of controlling rod 13 auxiliary connection valves, drives bypass plunger 7 to move by flap 3 motions, has reduced the unbalanced force acting on main valve plate, reduces the main road pressure loss; Secondary valve comprises O shape circle 6, bypass plunger 7, bypass tube 8, throttling bodies cover 9, throttling bodies 10, control head 11, seal ring 12, controlling rod 13, bypass plunger 7 is provided with control head 11 and throttling bodies 10, between bypass tube 8 and throttling bodies 10, throttling bodies is set and overlaps the impurity in 9 filter mediums, guarantee that can not affect throttling bodies 10 moves; Valve body 1 multi-channel structure ensures that valve do not dismantle on pipeline in the situation that, can open upper and lower end cap, checks, changes, adjusts all valve internals, can on-line control main road switching point flow, and can on-line control bypass flow; Control head 11 is arranged on bypass plunger 7 front portions, between control head 11 and throttling bodies 10, be provided with O shape circle 6, at the head of throttling bodies 10, a groove is set, in groove, be provided with seal ring, increase the seal pressure of secondary valve, increase sealing between bypass tube 8 and valve body 1, prevent bypass and leak outside, improved the reliability of secondary valve work.
Claims (4)
1. a multi-functional automatic recirculating pump-protecting valve, formed by valve body, controlling rod, flap, spring, valve gap, O shape circle, bypass plunger, bypass tube, throttling bodies cover, throttling bodies, seal ring, control head, it is characterized in that: whole valve is made up of main valve and secondary valve, flap top is provided with cylindrical groove, cylindrical groove arranges spring, guide rod inserts the cylindrical groove on flap top, and flap upper and lower end arranges decompression noise reduction orifice plate; Flap bottom is provided with through hole, and controlling rod is through through hole, the bypass plunger of controlling rod auxiliary connection valve; Bypass plunger is provided with control head and throttling bodies, and bypass sleeve is arranged on bypass tube inwall, and control head is arranged on bypass plunger front portion; At the head of throttling bodies, a groove is set, in groove, is provided with seal ring.
2. multi-functional automatic recirculating pump-protecting valve according to claim 1, is characterized in that: the center of the guide rod of described valve gap inner chamber part arranges the through hole of Φ 3mm.
3. multi-functional automatic recirculating pump-protecting valve according to claim 1, is characterized in that: between described bypass sleeve and bypass plunger, throttling bodies cover is set.
4. multi-functional automatic recirculating pump-protecting valve according to claim 1, is characterized in that: between described control head and throttling bodies, be provided with O shape circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420344149.7U CN203892638U (en) | 2014-06-18 | 2014-06-18 | Multifunctional automatic recirculating pump protection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420344149.7U CN203892638U (en) | 2014-06-18 | 2014-06-18 | Multifunctional automatic recirculating pump protection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203892638U true CN203892638U (en) | 2014-10-22 |
Family
ID=51719043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420344149.7U Expired - Fee Related CN203892638U (en) | 2014-06-18 | 2014-06-18 | Multifunctional automatic recirculating pump protection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203892638U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464714A (en) * | 2021-08-02 | 2021-10-01 | 九通集团有限公司 | Pump export minimum flow valve |
-
2014
- 2014-06-18 CN CN201420344149.7U patent/CN203892638U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464714A (en) * | 2021-08-02 | 2021-10-01 | 九通集团有限公司 | Pump export minimum flow valve |
| CN113464714B (en) * | 2021-08-02 | 2023-02-24 | 九通集团有限公司 | Pump export minimum flow valve |
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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: 20141022 Termination date: 20150618 |
|
| EXPY | Termination of patent right or utility model |