CN203374898U - Knocking-proof type check valve - Google Patents
Knocking-proof type check valve Download PDFInfo
- Publication number
- CN203374898U CN203374898U CN201320470649.0U CN201320470649U CN203374898U CN 203374898 U CN203374898 U CN 203374898U CN 201320470649 U CN201320470649 U CN 201320470649U CN 203374898 U CN203374898 U CN 203374898U
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- China
- Prior art keywords
- valve
- valve body
- knocking
- slow
- closing
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- Expired - Fee Related
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- Check Valves (AREA)
Abstract
The utility model discloses a knocking-proof type check valve. The knocking-proof type check valve comprises a valve body and a valve clack arranged in a cavity of the valve body, wherein the valve body is provided with a shaft, the valve clack is provided with a rocker which is fixed through a pin, and the rocker is connected with the shaft in a sleeved mode. The knocking-proof type check valve is characterized in that the outer end portion, outside the valve body, of the shaft is provided with a heavy punch, a slowly-closing secondary valve is arranged between the valve body and the heavy punch, the slowly-closing secondary valve is fixedly connected with the valve body through threads, and a rotating shaft is controlled through the slowly-closing secondary valve. According to the knocking-proof type check valve, the slowly-closing secondary valve is arranged outside the cavity of the valve body and can be maintained on line; a pressing rod and a driving block of the slowly-closing secondary valve are in a movable state, jamming will not occur, and the safety coefficient is high; knocking can be reduced to the maximum, impact to a valve carrier from the valve clack can be lowered, and service life is prolonged; the heavy punch can assist in closing, the check valve is closed tightly, and leakage is avoided.
Description
Technical field
The utility model relates to a kind of safety check, particularly waterproof hammer safety check.
Background technique
Swing check valve is to realize closing by the strength that flap is conducted oneself with dignity and medium flows backwards, and the shut-in time is probably in the 0.5S left and right.Within the so short time, close, reverse flow can cause that water flow in pipeline pressure sharply rises, and produces water attack.The pressure that water attack causes raises, and reaches as high as thousands of times of pipeline normal operating pressure, also can make in addition pipeline negative pressure occur.The pressure of fluctuation, can make the pipe-line system judder continuously, produces noise, and hammering sound, cause the accidents such as equipment and valve destruction.While closing, medium refluence speed reduces to rapidly zero from maximum, causes in pipe water pipe one side and presses rapidly and raise, thereby produce the water hammer that pipe-line system is had to destruction.
The model utility content
The purpose of this utility model is that a kind of maintenance, long waterproof hammer safety check of life-span be convenient to is provided in order to solve above-mentioned the deficiencies in the prior art.
To achieve these goals, the waterproof hammer safety check that the utility model is designed, comprise valve body, be placed in the endoceliac flap of valve, axle is installed on valve body, and flap is provided with the rocking bar fixing by pin, rocking bar and axle socket, it is characterized in that: described axle is placed in the valve body outer end weight is installed, be provided with slow-closing sub valve of rotary between valve body and weight, slow-closing sub valve of rotary and valve body are threaded connection fixing, by slow-closing sub valve of rotary, control rotatingshaft.
Preferably, described slow-closing sub valve of rotary comprises cylinder body, is active in the piston in cylinder body, and piston is provided with the piston rod be connected and fixed with piston, and piston rod is provided with driving block, and the external axle of driving block and valve body is fixed.
Preferably, described valve body also is provided with needle value outward, and needle value and slow-closing sub valve of rotary are fixed.
The waterproof hammer safety check that the utility model obtains, slow-closing sub valve of rotary is arranged on outside body cavity, can on-line maintenance; The driving block of depression bar and slow-closing sub valve of rotary, in active state, can not form jam, and safety coefficient is high; Reduce to greatest extent the generation of water hammer, have and can reduce the impact of flap to valve seat, increase the service life; Weight can help pass, makes it to close tightly, without leaking.
The accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is sectional view of the present utility model.
In figure: valve body 1, flap 2, rocking bar 3, axle 4, depression bar 5, weight 6, cylinder body 10, piston 11, piston rod 12, driving block 13.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment:
As shown in Figure 1 and Figure 2, the waterproof hammer safety check that the utility model provides, comprise valve body 1, be placed in the endoceliac flap 2 of valve, axle 4 is installed on valve body, and flap 2 is provided with the rocking bar fixing by pin 3, rocking bar 3 and axle 4 sockets, described axle 4 is placed in the valve body outer end weight 6 is installed, be provided with slow-closing sub valve of rotary between valve body 1 and weight 6, slow-closing sub valve of rotary and valve body 1 are threaded connection fixing
Described slow-closing sub valve of rotary comprises cylinder body 10, is active in the piston 11 in cylinder body, piston is provided with the piston rod 12 be connected and fixed with piston, piston rod 12 is provided with driving block 13, and the external axle of driving block 13 and valve body 1 is fixed, and by slow-closing sub valve of rotary, controls rotatingshaft.Described valve body also is provided with needle value outward, therefore needle value is prior art, does not elaborate, and needle value and slow-closing sub valve of rotary are fixed, and can pass through the free control switch time of needle value.
Above waterproof hammer safety check, set up slow-closing sub valve of rotary: slow-closing sub valve of rotary is arranged on outside valve body 1 chamber, with bolt, connects, can keep in repair by on-line control, when the medium following current, slow-closing sub valve of rotary bottom entrance pressure, move on piston 11, help main valve clack 2 to open, valve is worked in micro-resistance situation; When medium counter flow, weight 6 and main valve clack 2 help pass under the effect of gravity, and this section belongs to the quick closing valve section; When being closed to several angle, with slow-closing sub valve of rotary driving block 13 nuts, contact, this section belongs to the buffering closing process, forces piston to move down; the slowly closing valve, buffer time can be regulated by needle value, thereby reaches the elimination water attack; alleviate vibrations, protection pipeline and the purpose that prevents the pump reversing.
The self-powering type structure: entrance point pressure enters the slow-closing sub valve of rotary piston, promotes to move on piston, backs down main valve clack and is opened; Valve in the situation that micro-resistance work.
Depression bar 5 in valve body in active state, can not form jam with secondary valve top, and safety coefficient is high; The state that closes soon is divided into two stages: fast off status (free-falling hammer), slow off status (during depression bar Contact Pair valve top), reduce to greatest extent the generation of water hammer, can reduce again the impact of flap to valve seat, increase the service life, weight 6 can help pass, makes it sealing pair and closes tightly, without leaking.
Claims (3)
1. a waterproof hammer safety check, comprise valve body, be placed in the endoceliac flap of valve, axle is installed on valve body, flap is provided with the rocking bar fixing by pin, rocking bar and axle socket, it is characterized in that: described axle is placed in the valve body outer end weight is installed, and between valve body and weight, is provided with slow-closing sub valve of rotary, slow-closing sub valve of rotary and valve body are threaded connection fixing, by slow-closing sub valve of rotary, control rotatingshaft.
2. waterproof hammer safety check according to claim 1, it is characterized in that: slow-closing sub valve of rotary comprises cylinder body, is active in the piston in cylinder body, piston is provided with the piston rod be connected and fixed with piston, and piston rod is provided with driving block, and the external axle of driving block and valve body is fixed.
3. waterproof hammer safety check according to claim 1 and 2, it is characterized in that: described valve body also is provided with needle value outward, and needle value and slow-closing sub valve of rotary are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320470649.0U CN203374898U (en) | 2013-07-24 | 2013-07-24 | Knocking-proof type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320470649.0U CN203374898U (en) | 2013-07-24 | 2013-07-24 | Knocking-proof type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374898U true CN203374898U (en) | 2014-01-01 |
Family
ID=49837427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320470649.0U Expired - Fee Related CN203374898U (en) | 2013-07-24 | 2013-07-24 | Knocking-proof type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374898U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792821A (en) * | 2019-01-15 | 2020-02-14 | 王欣 | Weight lever type safety valve |
| CN112228681A (en) * | 2020-10-09 | 2021-01-15 | 翁赛华 | Device for eliminating water hammer effect |
-
2013
- 2013-07-24 CN CN201320470649.0U patent/CN203374898U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792821A (en) * | 2019-01-15 | 2020-02-14 | 王欣 | Weight lever type safety valve |
| CN110792821B (en) * | 2019-01-15 | 2021-06-08 | 王欣 | Weight lever type safety valve |
| CN112228681A (en) * | 2020-10-09 | 2021-01-15 | 翁赛华 | Device for eliminating water hammer effect |
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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: 20140101 Termination date: 20210724 |