CN203915866U - High service non-return pressure limiting joint - Google Patents
High service non-return pressure limiting joint Download PDFInfo
- Publication number
- CN203915866U CN203915866U CN201420284740.8U CN201420284740U CN203915866U CN 203915866 U CN203915866 U CN 203915866U CN 201420284740 U CN201420284740 U CN 201420284740U CN 203915866 U CN203915866 U CN 203915866U
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- China
- Prior art keywords
- water
- housing
- spring
- fire
- pressure
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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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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model relates to a kind of high service non-return pressure limiting joint, belongs to high service technical field of safety devices, especially emergency repair fire plant technical field.The utility model is comprised of housing, water belt lacing, inlet pipe casting, water outlet pipe fitting, T-shape spool, spring, spring pressure cap, safety valve, the one, in water supply process, when fire fighting truck or device are cut off the water, T-shape spool is under the effect of spring and spring pressure cap, automatically reply, anti-sealing refluxes.The 2nd, effective anti-sealing refluxes fire-fighting pumping is caused to damage, and only need to pressurize during one-pass attack and just can be out of the water immediately, has reduced the time of fire extinguishing attack, improves fire-fighting efficiency.The 3rd, the pressure of discharging device is excessive, non-return pressure limiting joint by relief valve more than pressure lay down, effective anti-waterstop damages because pressure is excessive.
Description
Technical field
The utility model relates to a kind of high service non-return pressure limiting joint, belongs to high service technical field of safety devices, especially emergency repair fire plant technical field.
Background technology
Existing fire fighting supply mode, fire hose to be connected on the switch water-division device of fire fighting truck by water belt lacing, when cutting off the water, fire fighting truck need first open the pressure release of water knockout drum relief valve, to prevent that water under high pressure from refluxing, damage fire fighting truck pump, in emergency rescue process, there is following defect: the one, because hydraulic giant position converts at any time, water band circuit extends at any time, and fire fighting truck can be cut off the water at any time, cause the press water in water band to reflux, damage fire fighting truck pump.The 2nd, be unfavorable for the continuity of fire attack easily causing resume combustion, reason is, after supplying water and stopping, the water in water band circuit need be bled off to pressure release, prevents that press water from refluxing, and when organizing for the second time fire attack, needs the certain hour band water-filling pressurising of again feeding water.The 3rd, the pressure due to fire pump in fire extinguishing procedure is excessive, also can cause damage, breakage or hose coupling to come off to water band circuit.
Summary of the invention
The purpose of this utility model is to exist after the pressure release of water band circuit for solving above-mentioned prior art, and the defect that needs again water-filling and water band circuit superpressure to cause damage or hose coupling to come off while organizing spot fire to put out a fire to save life and property, provides a kind of high service non-return pressure limiting joint.
The purpose of this utility model realizes by following measures:
The utility model is a kind of high service non-return pressure limiting joint, by housing, water belt lacing, inlet pipe casting, water outlet pipe fitting, T-shape spool, spring, spring pressure cap forms, it is characterized in that: housing is the tubular body that has central through hole, two ends are respectively equipped with draw-in groove and connecting thread, housing one end is connected to inlet pipe casting in the draw-in groove in housing by water belt lacing, the other end is connected in the draw-in groove in housing by hose coupling water outlet pipe fitting, between inlet pipe casting in the central through hole of housing and water outlet pipe fitting, T-shape spool is installed, on the valve rod of its T-shape spool, spring is housed, and T-shape spool is fixed in the central through hole of housing by hollow form spring pressure cap, the external diameter of T-shape spool is greater than the internal diameter of inlet pipe casting, on described housing, safety valve is installed, seal washer is established in inlet pipe casting and draw-in groove junction, seal washer is established in spring pressure cap and water outlet pipe fitting junction.
The beneficial effects of the utility model: the one, in water supply process, when fire fighting truck or device are cut off the water, T-shape spool, under the effect of spring and spring pressure cap, automatically replies, and anti-sealing refluxes.The 2nd, water does not reflux, and effectively prevents fire-fighting pumping to cause damage, and only need to pressurize during one-pass attack and just can be out of the water immediately, has reduced the time of fire extinguishing attack, improves fire-fighting efficiency.The 3rd, if the pressure of discharging device is excessive, non-return pressure limiting joint by relief valve more than pressure lay down, effective anti-waterstop damages because pressure is excessive.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
The utility model is by housing 1, water belt lacing, inlet pipe casting 4, water outlet pipe fitting 5, T-shape spool 7, spring 8, spring pressure cap 9 forms, housing 1 is for having the tubular body of central through hole, two ends are respectively equipped with draw-in groove and connecting thread, housing 1 one end is connected to inlet pipe casting 4 in the draw-in groove 6a in housing 1 by water belt lacing 2a, the other end is connected to water outlet pipe fitting 5 in the draw-in groove 6b in housing 1 by water belt lacing 2b, between inlet pipe casting 4 in the central through hole of housing 1 and water outlet pipe fitting 5, T-shape spool 7 is installed, spring 8 is housed on the valve rod of its T-shape spool 7, and by hollow form spring pressure cap 9, T-shape spool is fixed in the central through hole of housing 1.
Described housing 1 is provided with safety valve 10.
The external diameter of described T-shape spool 7 is greater than the internal diameter of inlet pipe casting 4.
Described inlet pipe casting 4 is established seal washer 3a with draw-in groove 6 junctions; Spring pressure cap 8 is established seal washer 3b with water outlet pipe fitting 5 junctions.
When carrying out fire fighting and rescue, water belt lacing 2a of the present utility model is connected on fire pump switch water-division device, water belt lacing 2b is connected on water band; Fire water enters in housing 1 by inlet pipe casting 4, when the pressure of water is greater than the elastic force of spring 8, T-shape spool 7 is automatically opened under the effect of hydraulic pressure, and when the pressure of water is less than the elastic force of spring 8, T-shape spool 7 is automatically closed under the effect of spring 8 elastic force.Because spring pressure cap 9 is fixed on draw-in groove 6b, and draw-in groove 6a plays a supporting role to inlet pipe casting 4, therefore, both effectively prevented that T-shape spool 7 and inlet pipe casting 4 from causing damage because the impulsive force of current is excessive, can guarantee again T-shape spool 7 opening and closing in the central through hole of housing 1.Sealing ring between draw-in groove and water-in and water-out pipe fitting, can guarantee can not leak because of poorly sealed appearance, and now fire water flows in water band by water outlet pipe fitting 5; When the pressure of water is greater than the safety value of safety valve 10 settings of installing on housing 1, safety valve 10 is opened automatically, is discharged into water pressure, and anti-waterstop damages or interface comes off.
Claims (4)
1. a high service non-return pressure limiting joint, by housing (1), water belt lacing, inlet pipe casting (4), water outlet pipe fitting (5), T-shape spool (7), spring (8), spring pressure cap (9) forms, it is characterized in that: housing (1) is for having the tubular body of central through hole, two ends are respectively equipped with draw-in groove and connecting thread, housing (1) one end is connected to inlet pipe casting (4) in the draw-in groove (6a) in housing (1) by water belt lacing (2a), the other end is connected in the draw-in groove (6b) in housing (1) by hose coupling (2b) water outlet pipe fitting (5), between inlet pipe casting (4) in the central through hole of housing (1) and water outlet pipe fitting (5), T-shape spool (7) is installed, spring (8) is housed on the valve rod of its T-shape spool (7), and by hollow form spring pressure cap (9), T-shape spool (7) is fixed in the central through hole of housing (1).
2. a kind of high service non-return pressure limiting joint according to claim 1, is characterized in that: the external diameter of T-shape spool (7) is greater than the internal diameter of inlet pipe casting (4).
3. a kind of high service non-return pressure limiting joint according to claim 1, is characterized in that: safety valve (10) is installed on described housing (1).
4. a kind of high service non-return pressure limiting joint according to claim 1, is characterized in that: seal washer (3a) is established in described inlet pipe casting (4) and draw-in groove (6) junction; Seal washer (3b) is established in spring pressure cap (8) and water outlet pipe fitting (5) junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420284740.8U CN203915866U (en) | 2014-05-30 | 2014-05-30 | High service non-return pressure limiting joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420284740.8U CN203915866U (en) | 2014-05-30 | 2014-05-30 | High service non-return pressure limiting joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203915866U true CN203915866U (en) | 2014-11-05 |
Family
ID=51811750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420284740.8U Expired - Fee Related CN203915866U (en) | 2014-05-30 | 2014-05-30 | High service non-return pressure limiting joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203915866U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090487A (en) * | 2016-08-12 | 2016-11-09 | 江阴江化微电子材料股份有限公司 | A kind of chemicals discharging check joint |
| CN107061860A (en) * | 2017-06-21 | 2017-08-18 | 海盐县秦山液压机械厂 | A kind of joint with decompression function |
| IT202100023186A1 (en) | 2021-09-08 | 2023-03-08 | R M Manfredi S N C Di Manfredi Mario E Carla | “Delivery unit for fire engine, with rotatable coupling units” |
-
2014
- 2014-05-30 CN CN201420284740.8U patent/CN203915866U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090487A (en) * | 2016-08-12 | 2016-11-09 | 江阴江化微电子材料股份有限公司 | A kind of chemicals discharging check joint |
| CN107061860A (en) * | 2017-06-21 | 2017-08-18 | 海盐县秦山液压机械厂 | A kind of joint with decompression function |
| IT202100023186A1 (en) | 2021-09-08 | 2023-03-08 | R M Manfredi S N C Di Manfredi Mario E Carla | “Delivery unit for fire engine, with rotatable coupling units” |
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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: 20141105 Termination date: 20150530 |
|
| EXPY | Termination of patent right or utility model |