CN105833455A - Check type fire hydrant - Google Patents
Check type fire hydrant Download PDFInfo
- Publication number
- CN105833455A CN105833455A CN201610260310.6A CN201610260310A CN105833455A CN 105833455 A CN105833455 A CN 105833455A CN 201610260310 A CN201610260310 A CN 201610260310A CN 105833455 A CN105833455 A CN 105833455A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- flap
- compression spring
- boss
- 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.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/20—Hydrants, e.g. wall-hoses, wall units, plug-in cabinets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
- F16K1/04—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
Abstract
The invention discloses a check type fire hydrant which comprises a valve body, a valve clack, a valve deck, a valve rod and a valve bonnet. A water inlet, a water outlet and a flow port are formed in the valve body. The flow port and the water inlet are formed coaxially. A sealing surface is arranged in the valve body and located above the flow port. The valve deck is fixedly connected to the upper portion of the valve body. The valve rod vertically penetrates through the valve deck downwards. An external thread on the middle portion of the valve rod is connected with a thread on the lower portion of the valve deck. The lower end of the valve rod stretches into an inner cavity of the valve body. The valve rod is sleeved with the valve bonnet, and the valve bonnet is connected to the upper portion of the valve deck. An annular groove is formed in the upper portion of the valve deck and located in the periphery of the valve rod, so that a sealing cavity is formed. Sealing filler is arranged in the sealing cavity. A boss is arranged at the upper end of the valve clack. An axial blind hole is formed in the center of the boss. The axial blind hole is in clearance fit with the lower end of the valve rod. A compression spring is arranged between the valve clack and the valve deck. The valve rod and the outer surface of the boss at the upper end of the valve clack are sleeved with the compression spring. The upper end of the compression spring abuts against the bottom surface of the valve deck. The lower end of the compression spring makes abutting contact with the upper end face of the valve clack. The check type fire hydrant has a closure function and can be closed rapidly so that media can be effectively prevented from flowing backwards.
Description
Technical field
The present invention relates to a kind of indoor fire-fighting fire hydrant, particularly to a kind of fire hydrant peculiar to vessel.
Background technology
Fire hydrant is a kind of fixed fire fighting device, and Main Function is to control combustible, isolation oxidizer, elimination ignition source.Generally including valve body, flap and for driving flap to do the valve rod moved along a straight line up and down, valve rod bottom connects the flap for matching with the through-flow mouth end face in valve pocket, and valve rod upper end is connected through valve gap with handwheel.Being rotated by handwheel band ovable valve stem, valve rod drives flap to move the most vertically, it is achieved the contact of flap and through-flow mouth end face with separate, it is achieved the switch of valve.But this valve is after unlatching, it is impossible to prevent medium from flowing backwards, function singleness, it is impossible to meet the occasion of needs scram fire hydrant, it is impossible to intercommunication uses, and the scope of application is less.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is provided that one both can be dammed, can effectively prevent again the non-return fire hydrant that medium flows backwards with scram.
The present invention is achieved through the following technical solutions technical goal.
Non-return fire hydrant, including valve body, flap, valve gap, valve rod, bonnet；Water inlet, outlet and connection water inlet, the through-flow mouth of outlet it is provided with in described valve body；Described through-flow mouth is coaxially disposed with water inlet, and valve body is provided with sealing surface on the top of through-flow mouth；Described valve gap is fixedly connected on valve body top；Described valve rod is vertically arranged, and downward through valve gap, the external screw thread at middle part is threadeded with bonnet lower, and lower end is stretched in body cavity；Described bonnet is sleeved on valve rod, is connected to valve gap top；Described valve gap top, at the annular groove that is formed around of valve rod, forms annular seal space, is provided with airtight and watertight padding, gland in annular seal space；It thes improvement is that: described flap upper end is provided with boss, and boss center is provided with axial blind hole, and axial blind hole coordinates with valve rod lower gap；It is provided with compression spring between described flap and valve gap；Described compression spring is linked in valve rod, the outer surface of flap upper end boss, the bottom surface of compression spring upper end contact valve gap, and lower end is inconsistent with flap upper surface.
In said structure, described flap baseplane is provided with annular groove, is provided with ring packing sheet in annular groove；Described ring packing sheet passes through pressing plate and nut check, and the end face of ring packing sheet fits tightly formation sealing with the sealing surface on through-flow mouth top；
In said structure, the end that described valve rod matches with the flap upper end central axial blind hole of boss is hemisphere jut shape.
The present invention compared with prior art, has the positive effect that:
1, compression spring it is provided with between flap and valve gap, the stem exterior surface that compression spring is linked in, the bottom surface of upper end contact valve gap, lower end is inconsistent with flap upper surface, the present invention is made to have down the function preventing medium from flowing backwards, rely on when pipeline has pressure the pressure of fluid self to open flap by force, rely on when pipeline decompression spring force to close flap；The rotation utilizing handwheel can ensure that valve is in the state of being turned on and off, and possesses all functions of common fire valve.So that the present invention both can be dammed, can effectively prevent medium from flowing backwards with scram again.
2, the ring packing sheet end face on flap of the present invention and through-flow mouth upper end sealing surface fit tightly the plane sealing structure good airproof performance of formation, and between sealing surface, frictional force is little, and service life is long, and simple in construction is easy to process, and anufacturability is good, it is simple to maintenance.
3, the end that valve rod matches with the flap upper end central axial blind hole of boss is hemisphere jut shape, make valve rod form point cantact between the two with flap to be connected, eliminate the Form and position error impact on sealing surface, strengthen the sealing of ring packing sheet end face and through-flow mouth upper end sealing surface.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Fig. 2 is I enlarged drawing in Fig. 1.
Detailed description of the invention
Below according to accompanying drawing and the invention will be further described in conjunction with the embodiments.
Non-return fire hydrant shown in the drawings, including valve body 1, flap 3, valve gap 6, valve rod 7, bonnet 9；Water inlet 2, outlet 12 and connection water inlet 2, the through-flow mouth 17 of outlet 12 it is provided with in valve body 1；Through-flow mouth 17 is coaxially disposed with water inlet 2, and valve body 1 is provided with sealing surface 14 on the top of through-flow mouth 17；Valve gap 6 is fixedly connected on valve body 1 top；Valve rod 7 is vertically arranged, and downward through valve gap 6, the external screw thread at middle part is connected with valve gap 6 lower thread, and lower end is stretched in valve body 1 inner chamber；Bonnet 9 is sleeved on valve rod 7, is connected to valve gap 6 top；Valve gap 6 top, at the annular groove that is formed around of valve rod 7, forms annular seal space, is provided with airtight and watertight padding 11, gland 10 in annular seal space；Flap 3 upper end is provided with boss, and boss center is provided with axial blind hole 20, and axial blind hole 20 coordinates with valve rod 7 lower gap；Compression spring 19 it is provided with between flap 3 and valve gap 6；Compression spring 19 is linked in valve rod 7, the outer surface of flap 3 upper end boss, the bottom surface of compression spring 19 upper end contact valve gap 6, and lower end is inconsistent with flap 3 upper surface.
Flap 3 baseplane is provided with annular groove, is provided with ring packing sheet 13 in annular groove；Ring packing sheet 13 is locked by pressing plate 15 and nut 16, and the end face of ring packing sheet 13 fits tightly formation sealing with the sealing surface 14 on through-flow mouth 17 top；
The end that valve rod 7 matches with the flap 3 upper end central axial blind hole of boss 20 is hemisphere jut shape.
The concrete embodiment dammed: rotate clockwise handwheel 8, valve rod 7 lower end moves downward in axial blind hole 20, compresses flap 3 and is close to the sealing surface 14 on through-flow mouth 17 top, so that through-flow mouth 17 is closed, even if pipe medium pressure exists, valve is always in current floe condition.
Prevent the concrete embodiment that medium flows backwards: rotate counterclockwise handwheel 8, valve rod 7 is made to increase, owing to the effect flap 3 of compression spring 19 is adjacent to sealing surface 14 all the time, valve is in sealing state, when pipeline discharge pressure medium, pressure medium acts on the bottom surface of flap 3 and overcomes compression spring 19 active force, and flap 3 moves upward along valve rod 7, valve opening；When pipeline rapid decompression, flap 3, under compression spring 19 acts on, is affixed to rapidly the sealing surface 14 on through-flow mouth 17 top, thus prevents medium back flow.
Claims (3)
1. a non-return fire hydrant, including valve body (1), flap (3), valve gap (6), valve rod (7), bonnet (9)；Water inlet (2), outlet (12) and connection water inlet (2), the through-flow mouth (17) of outlet (12) it is provided with in described valve body (1)；Described through-flow mouth (17) is coaxially disposed with water inlet (2), and valve body (1) is provided with sealing surface (14) on the top of through-flow mouth (17)；Described valve gap (6) is fixedly connected on valve body (1) top；Described valve rod (7) is vertically arranged, and downward through valve gap (6), the external screw thread at middle part is connected with valve gap (6) lower thread, and lower end is stretched in valve body (1) inner chamber；Described bonnet (9) is sleeved on valve rod (7), is connected to valve gap (6) top；Described valve gap (6) top, at the annular groove that is formed around of valve rod (7), forms annular seal space, is provided with airtight and watertight padding (11), gland (10) in annular seal space；It is characterized in that: described flap (3) upper end is provided with boss, boss center is provided with axial blind hole (20), and axial blind hole (20) coordinates with valve rod (7) lower gap；Compression spring (19) it is provided with between described flap (3) and valve gap (6)；Described compression spring (19) is linked in valve rod (7), the outer surface of flap (3) upper end boss, the bottom surface of compression spring (19) upper end contact valve gap (6), and lower end is inconsistent with flap (3) upper surface.
Non-return fire hydrant the most according to claim 1 is characterized in that: described flap (3) baseplane is provided with annular groove, is provided with ring packing sheet (13) in annular groove；Described ring packing sheet (13) is locked by pressing plate (15) and nut (16), and the end face of ring packing sheet (13) fits tightly formation sealing with the sealing surface (14) on through-flow mouth (17) top.
Non-return fire hydrant the most according to claim 1 and 2 is characterized in that: the end that described valve rod (7) matches with the central axial blind hole of flap (3) upper end boss (20) is hemisphere jut shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610260310.6A CN105833455A (en) | 2016-04-25 | 2016-04-25 | Check type fire hydrant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610260310.6A CN105833455A (en) | 2016-04-25 | 2016-04-25 | Check type fire hydrant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105833455A true CN105833455A (en) | 2016-08-10 |
Family
ID=56589105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610260310.6A Withdrawn CN105833455A (en) | 2016-04-25 | 2016-04-25 | Check type fire hydrant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105833455A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013725A (en) * | 2017-05-24 | 2017-08-04 | 山西征宇喷灌有限公司 | A kind of rotary barrel throttle |
| CN107050721A (en) * | 2017-03-29 | 2017-08-18 | 湖南高福星智能科技有限公司 | A kind of fire hydrant of Antivibration leak-proof water |
| CN107504197A (en) * | 2017-09-29 | 2017-12-22 | 南通市力沛流体阀业有限公司 | A kind of valve of labour-saving usage time length |
| CN108386556A (en) * | 2018-05-15 | 2018-08-10 | 高玉琴 | Valve with constant-current stabilizer |
| CN112682522A (en) * | 2020-12-17 | 2021-04-20 | 合肥宁泰真空设备有限公司 | Manual regulation formula valve |
-
2016
- 2016-04-25 CN CN201610260310.6A patent/CN105833455A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107050721A (en) * | 2017-03-29 | 2017-08-18 | 湖南高福星智能科技有限公司 | A kind of fire hydrant of Antivibration leak-proof water |
| CN107013725A (en) * | 2017-05-24 | 2017-08-04 | 山西征宇喷灌有限公司 | A kind of rotary barrel throttle |
| CN107504197A (en) * | 2017-09-29 | 2017-12-22 | 南通市力沛流体阀业有限公司 | A kind of valve of labour-saving usage time length |
| CN108386556A (en) * | 2018-05-15 | 2018-08-10 | 高玉琴 | Valve with constant-current stabilizer |
| CN112682522A (en) * | 2020-12-17 | 2021-04-20 | 合肥宁泰真空设备有限公司 | Manual regulation formula valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160810 |