CN203784310U - Pump protecting valve - Google Patents
Pump protecting valve Download PDFInfo
- Publication number
- CN203784310U CN203784310U CN201420011388.0U CN201420011388U CN203784310U CN 203784310 U CN203784310 U CN 203784310U CN 201420011388 U CN201420011388 U CN 201420011388U CN 203784310 U CN203784310 U CN 203784310U
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- China
- Prior art keywords
- valve
- pipeline
- valve body
- water pump
- pipe interface
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- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of a valve device and especially relates to a pump protecting valve. The pump protecting valve comprises a main valve, a limiting switch, a two-position tee joint solenoid valve and a control pipeline, wherein the main valve is jointed in the pipeline; the limiting switch is connected with a water pump power supply circuit and responds to the triggering of a valve rod of the main valve; the two-position tee joint solenoid valve is used for controlling the connection/disconnection of each pipeline. When a water pump is started, a fourth pipeline is connected with the pipeline connected with an upper valve body through the two-position tee joint solenoid valve, water in the upper valve body is drained, and a closing system is upward moved and the main valve is started, at the moment, the limiting switch is triggered for keeping the water pump power supply circuit connected under an effect of the extended valve rod. When the water pump is to be closed, the two-position tee joint solenoid valve is powered down and reset for connecting a second pipeline with the pipeline connected with the upper valve body, water enters into the inner chamber of the upper valve body, and the closing system is downward moved and the main valve is closed, at the moment, the valve rod is separated from the limiting switch, the water pump power supply circuit is disconnected, the water pump is powered down and the running is stopped. The action mode ensures that the parts in the pipeline, especially, the water pump, are prevented from being influenced by water pressure fluctuation.
Description
Technical field
The utility model belongs to control valve unit technical field, relates in particular to a kind of pump-protecting valve.
Background technique
Opening and closing due to water pump in pipeline can produce water pressure fluctuations conventionally, and the parts in pipeline especially water pump are produced to damaging influence, therefore on pipeline, the pump-protecting valve with protective function should be installed.In prior art, the internal structure complexity of pump-protecting valve, rate of fault is high is unfavorable for later maintenance.Meanwhile, the complexity of its structure has also determined that reliability of operation is lower, and working life is short.
Model utility content
The utility model provides a kind of and constructs rationally, is convenient to later maintenance, long service life, reliable pump-protecting valve for solving the technical problem existing in known technology.
The technological scheme that the utility model is taked for the technical problem existing in solution known technology is: a kind of pump-protecting valve comprises main valve and pilot line, and wherein main valve comprises upper valve body and lower valve body; The upper end of upper valve body is provided with center guide hole, and its top is provided with the valve gap with center hole, is also provided with pipe interface on the sidewall of upper valve body; The two ends of lower valve body are provided with the flange for connecting upstream and downstream pipeline, its inside is correspondingly provided with zone of high pressure and low pressure area, both intersections are provided with valve seat cylindraceous, on valve seat, be provided with positioning seat by multiple supports, this positioning seat is provided with center guide hole, is also provided with pipe interface on the sidewall of lower valve body zone of high pressure and low pressure area; Also comprise shutdown system, this system comprises that top and bottom are respectively through the valve rod of center guide hole on upper valve body and lower valve body, the top of valve rod is positioned at the center hole of valve gap, on valve rod, be equipped with successively diaphragm and I-shaped body from top to bottom, diaphragm and I-shaped body adopt punch holder and die holder to be fixed on valve rod middle part, the edge clamping of diaphragm is located between upper valve body and lower valve body, and the lower surface edge place of I-shaped body is provided with the sealing gasket coordinating with valve seat top edge; Described pilot line comprises the first pipeline, the second pipeline and the 3rd pipeline that meet at together, the first pipeline is connected to the pipe interface of lower valve body zone of high pressure sidewall, the second pipeline connects the import of a two-bit triplet solenoid valve, pipe interface, another outlet that an outlet of two-bit triplet solenoid valve is connected to upper valve body by pipeline is provided with the 4th pipeline of outer end opening, and the 3rd pipeline is connected to the pipe interface of lower valve body low pressure area sidewall; Also comprise the limit switch that is connected to water pump power supply line, its contact is subject to valve stem tip to trigger response.
Advantage of the present utility model and good effect are: the utility model reasonable in design, to control accurately and convenient, and whole pump-protecting valve has excellent performance.Modular main valve internal structure and pilot line have ensured the running precision that valve is higher, reliable sealability and longer working life.Meanwhile, this pump-protecting valve is also convenient to clean and is safeguarded.By with ducted water pump concerted action, the pressure surge of avoiding the medium in pipeline to cause due to the opening and closing of water pump, has protected especially water pump of ducted parts effectively.
Preferably: on the first pipeline, be provided with ball valve, filter and safety check, on the second pipeline, be provided with restricting orifice, on the 3rd pipeline, be provided with safety check, filter and ball valve, on the pipeline between two-bit triplet solenoid valve and upper valve body, be provided with throttle valve and ball valve.
Brief description of the drawings
Fig. 1 is that master of the present utility model looks sectional structure schematic diagram.
In figure: 1, ball valve; 2, limit switch; 3, the first pipeline; 4, the second pipeline; 5, filter; 6, safety check; 7, safety check; 8, filter; 9, the 3rd pipeline; 10, two-bit triplet solenoid valve; 11, ball valve; 12, the 4th pipeline; 13, throttle valve; 14, ball valve; 15, main valve.
Embodiment
For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples and be described in detail as follows:
Refer to Fig. 1, the utility model comprises main valve 15 and pilot line, wherein:
Main valve 15 comprises upper valve body and lower valve body.The upper end of upper valve body is provided with center guide hole, and its top is provided with the valve gap with center hole, is also provided with pipe interface on the sidewall of upper valve body.
The two ends of lower valve body are provided with the flange for connecting upstream and downstream pipeline, its inside is correspondingly provided with zone of high pressure and low pressure area, both intersections are provided with valve seat cylindraceous, on valve seat, be provided with positioning seat by multiple supports, this positioning seat is provided with center guide hole, is also provided with pipe interface on the sidewall of lower valve body zone of high pressure and low pressure area.
Also comprise shutdown system, this system comprises that top and bottom are respectively through the valve rod of center guide hole on upper valve body and lower valve body, the top of valve rod is positioned at the center hole of valve gap, on valve rod, be equipped with successively diaphragm and I-shaped body from top to bottom, diaphragm and I-shaped body adopt punch holder and die holder to be fixed on valve rod middle part, the edge clamping of diaphragm is located between upper valve body and lower valve body, the lower surface edge place of I-shaped body is provided with the sealing gasket coordinating with valve seat top edge, when sealing gasket props up valve seat, zone of high pressure and the low pressure area of lower valve body are separated.
In the present embodiment, between punch holder and upper valve body, spring is set, can plays buffer function to the motion of shutdown system.
Pilot line comprises the first pipeline 3, the second pipeline 4 and the 3rd pipeline 9 that meet at together.Wherein, the first pipeline 3 is connected to the pipe interface of lower valve body zone of high pressure sidewall, the second pipeline 4 connects the import of a two-bit triplet solenoid valve 10, the 4th pipeline 12, the three pipelines 9 that pipe interface, another outlet that an outlet of two-bit triplet solenoid valve 10 is connected to upper valve body by pipeline is provided with outer end opening are connected to the pipe interface of lower valve body low pressure area sidewall.
Also comprise the limit switch 2 that is connected to water pump power supply line, its contact is subject to valve stem tip to trigger response.
In order further to promote the control performance of this pump-protecting valve; in the present embodiment; on the first pipeline 3, be provided with ball valve 1, filter 5 and safety check 6; on the second pipeline 4, be provided with restricting orifice; on the 3rd pipeline 9, be provided with safety check 7, filter 8 and ball valve 11, on the pipeline between two-bit triplet solenoid valve 10 and upper valve body, be provided with throttle valve 13 and ball valve 14.
Working procedure: when starting mode of pump, two-bit triplet solenoid valve 10 is switched on the 4th pipeline 12 and the pipeline that is connected to upper valve body is connected, water in upper valve body is discharged, move main valve in shutdown system opens, and now, under the effect of the valve rod stretching out, limit switch 2 triggers and keeps water pump power supply lines to connect; When water pump prepares to cut out, two-bit triplet solenoid valve 10 power-off resets are connected the second pipeline 4 and the pipeline that is connected to upper valve body, and water enters upper valve body inner chamber, shutdown system moves down main valve and closes, and now valve rod and limit switch 2 depart from, water pump power supply line disconnects, and water pump dead electricity is out of service.
Claims (2)
1. a pump-protecting valve, is characterized in that: comprise main valve (15) and pilot line, wherein,
Described main valve (15) comprises upper valve body and lower valve body; The upper end of upper valve body is provided with center guide hole, and its top is provided with the valve gap with center hole, is also provided with pipe interface on the sidewall of upper valve body; The two ends of lower valve body are provided with the flange for connecting upstream and downstream pipeline, its inside is correspondingly provided with zone of high pressure and low pressure area, both intersections are provided with valve seat cylindraceous, on valve seat, be provided with positioning seat by multiple supports, this positioning seat is provided with center guide hole, is also provided with pipe interface on the sidewall of lower valve body zone of high pressure and low pressure area; Also comprise shutdown system, this system comprises that top and bottom are respectively through the valve rod of center guide hole on upper valve body and lower valve body, the top of valve rod is positioned at the center hole of valve gap, on valve rod, be equipped with successively diaphragm and I-shaped body from top to bottom, diaphragm and I-shaped body adopt punch holder and die holder to be fixed on valve rod middle part, the edge clamping of diaphragm is located between upper valve body and lower valve body, and the lower surface edge place of I-shaped body is provided with the sealing gasket coordinating with valve seat top edge;
Described pilot line comprises the first pipeline (1), the second pipeline (4) and the 3rd pipeline (9) that meet at together, the first pipeline (1) is connected to the pipe interface of lower valve body zone of high pressure sidewall, the second pipeline (4) connects the import of a two-bit triplet solenoid valve (10), pipe interface, another outlet that an outlet of two-bit triplet solenoid valve (10) is connected to upper valve body by pipeline is provided with the 4th pipeline (12) of outer end opening, and the 3rd pipeline (9) is connected to the pipe interface of lower valve body low pressure area sidewall;
Also comprise the limit switch (2) that is connected to water pump power supply line, its contact is subject to valve stem tip to trigger response.
2. pump-protecting valve as claimed in claim 1; it is characterized in that: on the first pipeline (3), be provided with ball valve (1), filter (5) and safety check (6); on the second pipeline (4), be provided with restricting orifice; on the 3rd pipeline (9), be provided with safety check (7), filter (8) and ball valve (11), on the pipeline between two-bit triplet solenoid valve (10) and upper valve body, be provided with throttle valve (13) and ball valve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420011388.0U CN203784310U (en) | 2014-01-07 | 2014-01-07 | Pump protecting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420011388.0U CN203784310U (en) | 2014-01-07 | 2014-01-07 | Pump protecting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203784310U true CN203784310U (en) | 2014-08-20 |
Family
ID=51320498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420011388.0U Expired - Fee Related CN203784310U (en) | 2014-01-07 | 2014-01-07 | Pump protecting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203784310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575624A (en) * | 2017-07-28 | 2018-01-12 | 无锡锡压压缩机有限公司 | A kind of air inlet adjustment valve arrangement |
-
2014
- 2014-01-07 CN CN201420011388.0U patent/CN203784310U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575624A (en) * | 2017-07-28 | 2018-01-12 | 无锡锡压压缩机有限公司 | A kind of air inlet adjustment valve arrangement |
| CN107575624B (en) * | 2017-07-28 | 2024-05-10 | 无锡锡压压缩机有限公司 | Air inlet regulating valve structure |
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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: 20140820 Termination date: 20150107 |
|
| EXPY | Termination of patent right or utility model |