CN201277355Y - Automatic opening and closing type non-return valve - Google Patents
Automatic opening and closing type non-return valve Download PDFInfo
- Publication number
- CN201277355Y CN201277355Y CNU2008201718781U CN200820171878U CN201277355Y CN 201277355 Y CN201277355 Y CN 201277355Y CN U2008201718781 U CNU2008201718781 U CN U2008201718781U CN 200820171878 U CN200820171878 U CN 200820171878U CN 201277355 Y CN201277355 Y CN 201277355Y
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- China
- Prior art keywords
- rotating shaft
- rotation shaft
- valve
- valve body
- close type
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- 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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- Lift Valve (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The utility model provides an automatic open and close type check valve, which comprises a valve body, wherein a first rotation shaft, a second rotation shaft, a packing ring plate and a limiting baffle block are respectively installed on the valve body, wherein a central line of the first rotation shaft and the central line of the second rotation shaft are located on one straight line, a shaft gland component is arranged on a joint of the valve body, the first rotation shaft and the second rotation shaft, valve plates are installed on the first rotation shaft and the second rotation shaft, the first rotation shaft and the second rotation shaft are located on one side of the central lines of the valve plates, and the central lines of the first rotation shaft and the second rotation shaft are in parallel with the central lines of the valve plates. The automatic open and close type check valve has the advantages that the structure and design are rational, the opening and closing can be finished automatically according to conditions and do not need operating manually, the labor intensity of working staff is lowered, the device safety is improved, serious accidents are avoided, and the production cost is lowered for enterprises.
Description
Technical field
The utility model relates to a kind of blower fan safety protection device, specifically a kind of automatic open-close type check valve.
Background technique
The employed high-power blower of chemical enterprise is in order to prevent the situation of the impeller reversing that causes because of emergency shutdown at present; normally Hand-operated butterfly valve is installed in blower fan import and outlet port, when the unexpected stall of blower fan, the manual-lock butterfly valve; prevent gas backstreaming, cause the impeller reversing.Though this design can realize the protection to blower fan, untimely if butterfly valve cuts out, the situation of blower fan reversing still might appear, and also can cause when serious and smash blade, damage serious accident such as casing.
Summary of the invention
The purpose of this utility model provides a kind of automatic open-close type check valve, it can be according to the variation of blower fan import and outlet port air-flow, when bringing into operation, opens automatically by blower fan, occur unusual at blower fan, automatically close when producing inverted draft, guarantee that the situation of reversing, the safety of support equipment do not appear in blower fan.
The utility model for achieving the above object, be achieved through the following technical solutions: comprise valve body, first rotating shaft, second rotating shaft, sealing ring flat-plate and positive stop are installed respectively on the valve body, the centerline of the center line of first rotating shaft and second rotating shaft is on same straight line, the joint of the valve body and first rotating shaft, second rotating shaft is provided with axle envelope parts, in first rotating shaft and second rotating shaft valve plate is installed, first rotating shaft and second rotating shaft are in center line one side of valve plate, and the center line of first rotating shaft and second rotating shaft is parallel to the center line of valve plate.The sealing ring flat-plate is divided into two sections, disconnects from first rotating shaft and second rotating shaft.In first rotating shaft weight linear meter is installed, weight member is installed on the weight linear meter.Install in first rotating shaft and open pointer, balancing weight is installed on the valve plate.
Advantage of the present utility model is: reasonable in design, and open and close and all can according to circumstances finish automatically, do not need manually-operable, reduced staff's labor intensity, improved the Security of equipment, avoided the generation of serious accident, for enterprise has reduced cost of production.
Description of drawings
Fig. 1 is installed in the structural representation of blower fan inlet for the utility model; Fig. 2 is the A-A sectional view of Fig. 1; Fig. 3 is installed in the structural representation in blower fan outlet port for the utility model; Fig. 4 is the B-B sectional view of Fig. 3.
Embodiment
The utility model comprises valve body 1, first rotating shaft 5 is installed respectively on the valve body 1, second rotating shaft 6, sealing ring flat-plate 10 and positive stop 11, positive stop 11 can prevent that valve plate 2 open angles are excessive, can't close automatically, the centerline of the center line of first rotating shaft 5 and second rotating shaft 6 is on same straight line, the valve body 1 and first rotating shaft 5, the joint of second rotating shaft 6 is provided with axle envelope parts 8, can prevent that the joint from gas leakage taking place, valve plate 2 is installed in first rotating shaft 5 and second rotating shaft 6, first rotating shaft 5 and second rotating shaft 6 are in center line one side of valve plate 2, the center line of first rotating shaft 5 and second rotating shaft 6 is parallel to the center line of valve plate 2, first rotating shaft 5, second rotating shaft 6 produces pressure difference, the action that pressure difference can make valve plate 2 finish automatic unlatching or close automatically when adopting eccentric Placement can make air flow stream cross valve plate 2 with valve plate 2.Sealing ring flat-plate 10 is divided into two sections, disconnects from first rotating shaft 5 and second rotating shaft 6, can play sealing and spacing double action when valve plate 2 is in closed condition.
When the utility model is installed in blower fan inlet, weight linear meter 14 is installed in first rotating shaft 5, weight member 4 is installed on the weight linear meter 14, when blower fan was opened, positive draft flow through valve plate 2, produced pressure difference, promoted valve plate and rotated to open mode; When blower fan was shut down suddenly, positive draft disappeared, but because inlet's backflow wind-force is less, valve plate 2 needs to finish the action of closing by the gravity of weight member 4.When the utility model is installed in the blower fan outlet port, installs in first rotating shaft 5 and open pointer 12, balancing weight 13 is installed on the valve plate 2, when blower fan was opened, positive draft flow through valve plate 2, produced pressure difference, promoted valve plate and rotated to open mode; When blower fan is shut down suddenly, when disappearing, positive draft produces back draught, and the pressure difference that back draught produces promotes valve plate 2 and goes back to closed position.Installation balancing weight 13 is the weight for balance valve plate 2 both sides, opens pointer 12 and can rotate with first rotating shaft 5, helps the staff to observe valve plate 2 residing states.Among the figure: the 3rd, support, the 7th, bearing, the 9th, locating stud.
Claims (4)
1, the automatic open-close type check valve, it is characterized in that: comprise valve body (1), first rotating shaft (5) is installed respectively on the valve body (1), second rotating shaft (6), sealing ring flat-plate (10) and positive stop (11), the centerline of the center line of first rotating shaft (5) and second rotating shaft (6) is on same straight line, valve body (1) and first rotating shaft (5), the joint of second rotating shaft (6) is provided with axle envelope parts (8), first rotating shaft (5) and second rotating shaft (6) are gone up valve plate (2) are installed, first rotating shaft (5) and second rotating shaft (6) are in center line one side of valve plate (2), and the center line of first rotating shaft (5) and second rotating shaft (6) is parallel to the center line of valve plate (2).
2, automatic open-close type check valve according to claim 1 is characterized in that: sealing ring flat-plate (10) is divided into two sections, disconnects from first rotating shaft (5) and second rotating shaft (6).
3, automatic open-close type check valve according to claim 1 and 2 is characterized in that: first rotating shaft (5) is gone up weight linear meter (14) is installed, and weight linear meter (14) is gone up weight member (4) is installed.
4, automatic open-close type check valve according to claim 1 and 2 is characterized in that: first rotating shaft (5) is gone up to install and is opened pointer (12), and valve plate (2) is gone up balancing weight (13) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201718781U CN201277355Y (en) | 2008-09-25 | 2008-09-25 | Automatic opening and closing type non-return valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201718781U CN201277355Y (en) | 2008-09-25 | 2008-09-25 | Automatic opening and closing type non-return valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201277355Y true CN201277355Y (en) | 2009-07-22 |
Family
ID=40894940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201718781U Expired - Fee Related CN201277355Y (en) | 2008-09-25 | 2008-09-25 | Automatic opening and closing type non-return valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201277355Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084265A (en) * | 2017-06-23 | 2017-08-22 | 山东明天机械有限公司 | Gas piping check valve special |
| CN107720304A (en) * | 2017-10-13 | 2018-02-23 | 无锡锡东能源科技有限公司 | Turnover panel door gear |
| CN107763255A (en) * | 2017-11-17 | 2018-03-06 | 珠海格力电器股份有限公司 | Overturning type check valve, compressor and air conditioning equipment |
| CN112212039A (en) * | 2020-09-28 | 2021-01-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Exhaust valve assembly, compressor and air conditioner |
| CN114517847A (en) * | 2022-01-19 | 2022-05-20 | 中国核电工程有限公司 | Check valve |
-
2008
- 2008-09-25 CN CNU2008201718781U patent/CN201277355Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084265A (en) * | 2017-06-23 | 2017-08-22 | 山东明天机械有限公司 | Gas piping check valve special |
| CN107720304A (en) * | 2017-10-13 | 2018-02-23 | 无锡锡东能源科技有限公司 | Turnover panel door gear |
| CN107763255A (en) * | 2017-11-17 | 2018-03-06 | 珠海格力电器股份有限公司 | Overturning type check valve, compressor and air conditioning equipment |
| CN112212039A (en) * | 2020-09-28 | 2021-01-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Exhaust valve assembly, compressor and air conditioner |
| CN112212039B (en) * | 2020-09-28 | 2022-06-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Exhaust valve assembly, compressor and air conditioner |
| CN114517847A (en) * | 2022-01-19 | 2022-05-20 | 中国核电工程有限公司 | Check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20110925 |