CN105526390A - Pressing open type deluge valve with piston inner cavity pressure relief device - Google Patents
Pressing open type deluge valve with piston inner cavity pressure relief device Download PDFInfo
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- CN105526390A CN105526390A CN201410584139.5A CN201410584139A CN105526390A CN 105526390 A CN105526390 A CN 105526390A CN 201410584139 A CN201410584139 A CN 201410584139A CN 105526390 A CN105526390 A CN 105526390A
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Abstract
The invention discloses a pressing open type deluge valve with a piston inner cavity pressure relief device. The pressing open type deluge valve comprises a valve body, a valve core, an end cover, a piston rod, a piston and a valve plate, wherein a plurality of water outlet holes are formed in the left end of the valve body; the valve core is mounted in the valve body; the end cover is mounted at the left end of the valve core; the left end of the piston rod stretches into the valve core; the piston is mounted at the left end of the piston rod; the valve plate is mounted at the right end of the piston rod; a pressure relief hole is formed in the end cover, and is communicated with the exterior of the valve body through a pressure relief pipe penetrating through one water outlet hole; a connecting part between the pressure relief pipe and the pressure relief hole and a connecting part between the pressure relief pipe and the water outlet hole are sealed; and the piston rod is internally provided with a sealing and separating device which seals and separates spaces at the two sides of the piston rod. The pressing open type deluge valve can effectively prevent a water flow from flowing back.
Description
Technical field
The present invention relates to fire-protection equipment field, in particular to a kind of pressurization opening formula drench valve with piston cavity pressure relief device.
Background technique
Pressurization opening formula drench valve is a kind of critical piece for automatic fire extinguishing system, and the consumption in industrial fire field is very large.Structure longitudinal sectional view when Fig. 1 is the pressurization opening formula drench valve closed condition of prior art, as shown in Figure 1, the left end of piston rod 4 is welded with piston 3, and valve plate 5 can screw in the right-hand member of piston rod 4, piston 3, piston rod 4 and valve plate 5 can move left and right along the axial centre of spool 2, end cap 6 can screw in the left end of spool 2 and seal, Compress Spring 7 is installed between end cap 6 and piston rod 4, valve body 1 and spool 2 are bolted together, the left end of valve body 1 is formed with water intake 9, right-hand member is formed with water outlet 10, spool 2 upper, lower two circumferential surface places are shaped with two radial water inlets 11, the circumferential edges position of spool 2 is formed with multiple axial water passage hole 12 vertically, radial water inlet 11 and axial water passage hole 12 not connected, circumferential surface on the left of valve body 1 is formed with multiple osculum 13, space on the right side of piston 3 and between spool 2 forms piston exocoel 14, radial water inlet 11 connects with piston exocoel 14, space between on the left of piston 3 and on the right side of end cap 6 forms piston cavity 15, space between on the right side of spool 2 and on the left of valve plate 5 forms the right chamber 16 of valve body, piston rod 4 right-hand member is formed and returns the mouth of a river 17, and the water of water intake 9 automatically can flow through multiple axial water passage hole 12 and enter in the right chamber 16 of valve body.Osculum 13 is below connected with pipeline with radial water inlet 11, the lower circumferential surface place of spool 2 radial water inlet 11 and below osculum 13 and between solenoid valve is installed, at radial water inlet 11 place at the upper circumferential surface place of spool 2, normally-closed ball valve is installed; When closed electromagnetic valve, manual unlocking normally-closed ball valve, water in piston exocoel 14 is released, the hydraulic pressure entered in the right chamber 16 of valve body compels the left side of valve plate 5, because piston rod 4 is also compressed spring 7 active force to the right simultaneously, so just make valve plate 5 oppress tightly on the left side of water outlet 10, thus pressurization opening formula drench valve is closed; When solenoid valve is opened, first osculum 13 is below connected with radial water inlet 11 by pipeline, current in such water intake 9 enter in piston exocoel 14 through osculum 13 below, radial water inlet 11, enter into the right side of the current forces piston 3 in piston exocoel 14, because the area on the right side of piston 3 is greater than the area on the left of valve plate 5, the pressure difference produced by this area overcomes Compress Spring 7 elastic force to the right, make piston 3, piston rod 4 is moved to the left, thus opened by pressurization opening formula drench valve together with valve plate 5.
After pressurization opening formula drench valve is opened, the current at water outlet 10 place easily turn back in piston cavity 15 along returning the mouth of a river 17, turn back to the left side of the current forces piston 3 in piston cavity 15, the pressure of easy equalizing lever 3 arranged on left and right sides, under the effect of Compress Spring 7, easily makes piston 3, piston rod 4 moves right together with valve plate 5, thus pressurization opening formula drench valve is closed, cause misoperation, make the water flow shutoff of putting out a fire, produce huge immeasurable harm.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of pressurization opening formula drench valve that can effectively stop current to flow backwards.
Therefore, technological scheme of the present invention is as follows:
The pressurization opening formula drench valve of the band piston cavity pressure relief device of a kind of embodiment, comprise valve body, spool, end cap, piston rod, piston and valve plate, the left end of described valve body is provided with multiple osculum, described spool is arranged in described valve body, described end cap is arranged on the left end of described spool, the left end of described piston rod to stretch in described spool and is provided with described piston, described valve plate is arranged on the right-hand member of described piston rod, described end cap has relief hole, described relief hole is communicated with outward with described valve body through the relief tube of osculum described in one of them by one, and described relief tube and described relief hole, the joint of described osculum all forms sealing, the packing device it being axially separated into two spaces is provided with in described piston rod.
In this technological scheme, by piston cavity to be in communication with the outside the discharge ensureing piston cavity compressed air by relief tube, simultaneously by the right-hand member shutoff of piston rod, thus achieve and effectively avoid current to flow backwards, unexpected closing motion is there is after preventing pressurization opening formula drench valve from opening, maintain current uninterrupted continuously, fire-fighting work is carried out smoothly, has ensured the security of the lives and property of the people.
Wherein, the implementation of packing device can be: described piston rod is hollow structure, and described packing device is the plug being arranged on described piston rod right-hand member.Can be conveniently implemented on original structure and reequip.
The implementation of packing device can also be: described packing device and described piston rod one-body molded, make to be solid construction at least partly in described piston rod.Namely directly solid piston rod is adopted, lower for the equipment cost of again producing.
Fixed by a lower cover between described relief tube and described end cap, fixed by screw between described lower cover and described end cap.Lower seal pad is installed between described lower cover and described end cap, ensures sealing further.
Fixed by a upper press cover between described relief tube and described valve body, fixed by screw between described upper press cover and described valve body.Between described upper press cover and described valve body, sealing gasket is installed, ensures sealing further.
Further, the pressurization opening formula drench valve of described band piston cavity pressure relief device also comprises the middle gland for fixing described relief tube, described middle gland inserts in described osculum, and the upper end of described middle gland is provided with a flange, described flange is pressed on described valve body, and described relief tube is through described middle gland.In this technological scheme, relief tube is easier for installation.Be provided with stuffing box gland between described flange and described valve body, ensure sealing further.
Accompanying drawing explanation
Longitudinal sectional view when Fig. 1 is a kind of pressurization opening formula drench valve closed condition of prior art;
Fig. 2 is the structural representation of the pressurization opening formula drench valve of band piston cavity pressure relief device according to the embodiment of the present invention;
Fig. 3 is the structural representation of the pressurization opening formula drench valve according to another embodiment of the present invention with piston cavity pressure relief device;
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
As shown in Figures 2 and 3, be with the pressurization opening formula drench valve of piston cavity pressure relief device according to an embodiment of the invention, comprise valve body 1, spool 2, end cap 6, piston rod 4, piston 3 and valve plate 5, the left end of described valve body 1 is provided with multiple osculum 13, described spool 2 is arranged in described valve body 1, described end cap 6 is arranged on the left end of described spool 2, the left end of described piston rod 4 to stretch in described spool 2 and is provided with described piston 3, described valve plate 5 is arranged on the right-hand member of described piston rod 4, described end cap 6 has relief hole 113, described relief hole 113 is communicated with described valve body 1 is outer by the relief tube 107 that passes osculum 13 described in one of them, and described relief tube 107 and described relief hole 113, the joint of described osculum 13 all forms sealing, the packing device it being axially separated into two spaces is provided with in described piston rod 4.
Wherein, as shown in Figure 3, the osculum 13 through relief tube 107 can reduce aperture according to actual needs.
In this technological scheme, by piston cavity 15 to be in communication with the outside the discharge ensureing piston cavity 15 compressed air by relief tube 107, simultaneously by the right-hand member shutoff of piston rod 4, thus achieve and effectively avoid current to flow backwards, unexpected closing motion is there is after preventing pressurization opening formula drench valve from opening, maintain current uninterrupted continuously, fire-fighting work is carried out smoothly, has ensured the security of the lives and property of the people.
Wherein, the implementation of packing device can be: described piston rod 4 is hollow structure, and described packing device is the plug 110 being arranged on described piston rod 4 right-hand member.Can be conveniently implemented on original structure and reequip.
The implementation of packing device can also be: described packing device and described piston rod 4 one-body molded, make to be solid construction at least partly in described piston rod 4.Namely directly solid piston rod 4 is adopted, lower for the equipment cost of again producing.
Specifically, the mounting type of relief tube 107 is as follows:
Fixed by a lower cover 101 between described relief tube 107 and described end cap 6, fixed by screw 102 between described lower cover 101 and described end cap 6.Between described lower cover 101 and described end cap 6, lower seal pad 103 is installed, ensures sealing further.
Fixed by a upper press cover 109 between described relief tube 107 and described valve body 1, fixed by screw 102 between described upper press cover 109 and described valve body 1.Between described upper press cover 109 and described valve body 1, sealing gasket 103 ' is installed, ensures sealing further.
Further, as shown in Figure 2, the pressurization opening formula drench valve of described band piston cavity pressure relief device also comprises the middle gland 104 for fixing described relief tube 107, described middle gland 104 inserts in described osculum 13, and the upper end of described middle gland 104 is provided with a flange 111, described flange 111 is pressed on described valve body 1, and described relief tube 107 is through described middle gland 104.In this technological scheme, relief tube 107 is easier for installation.Be provided with stuffing box gland 105 between described flange 111 and described valve body 1, ensure sealing further.
The pressurization opening formula drench valve of the band piston cavity pressure relief device in the present invention, when closed electromagnetic valve, the water of water intake 9 automatically can flow through multiple axial water passage hole 12 and enter in the right chamber 16 of valve body, the hydraulic pressure entered in the right chamber 16 of valve body compels the left side of valve plate 5, because piston rod 4 is also compressed spring 7 active force to the right simultaneously, valve plate 5 is so just made to oppress tightly on the left side of water outlet 10, thus a kind of pressurization opening formula drench valve with piston cavity pressure relief device is closed, when solenoid valve is opened, first osculum 13 is below connected with radial water inlet 11 by pipeline, current in such water intake 9 are through osculum 13 below, radial water inlet 11 enters in piston exocoel 14, enter into the right side of the current forces piston 3 in piston exocoel 14, area due to piston 3 is greater than the area of valve plate 5, the pressure difference produced by this area overcomes Compress Spring 7 elastic force to the right, make piston 3, piston rod 4 is moved to the left together with valve plate 5, air in piston cavity 15 is discharged through relief tube 107, thus a kind of pressurization opening formula drench valve with piston cavity pressure relief device is opened, after a kind of pressurization opening formula drench valve with piston cavity pressure relief device is opened, the current at water outlet 10 place are stopped by plug 110, can not enter in piston cavity 15 from piston rod 4, water flow pressure is no longer included in piston cavity 15, guarantee that pressurization opening formula drench valve is opened all the time, ensure normally carrying out of fire-extinguishing operations.
In sum, content of the present invention is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present invention, but this embodiment comprises within the scope of the present invention.
Claims (9)
1. the pressurization opening formula drench valve with piston cavity pressure relief device, comprise valve body (1), spool (2), end cap (6), piston rod (4), piston (3) and valve plate (5), the left end of described valve body (1) is provided with multiple osculum (13), described spool (2) is arranged in described valve body (1), described end cap (6) is arranged on the left end of described spool (2), the left end of described piston rod (4) to stretch in described spool (2) and is provided with described piston (3), described valve plate (5) is arranged on the right-hand member of described piston rod (4), it is characterized in that, described end cap (6) has relief hole (113), described relief hole (113) is communicated with outward with described valve body (1) through the relief tube (107) of osculum (13) described in one of them by one, and described relief tube (107) and described relief hole (113), the joint of described osculum (13) all forms sealing, the packing device it being axially separated into two spaces is provided with in described piston rod (4).
2. the pressurization opening formula drench valve of band piston cavity pressure relief device according to claim 1, it is characterized in that, described piston rod (4) is hollow structure, and described packing device is for being arranged on the plug (110) of described piston rod (4) right-hand member.
3. the pressurization opening formula drench valve of band piston cavity pressure relief device according to claim 1, it is characterized in that, described packing device and described piston rod (4) one-body molded, make to be solid construction at least partly in described piston rod (4).
4. the pressurization opening formula drench valve of band piston cavity pressure relief device according to any one of claim 1 to 3, it is characterized in that, fixed by a lower cover (101) between described relief tube (107) and described end cap (6), fixed by screw (102) between described lower cover (101) and described end cap (6).
5. the pressurization opening formula drench valve of band piston cavity pressure relief device according to claim 4, is characterized in that, is provided with lower seal pad (103) between described lower cover (101) and described end cap (6).
6. the pressurization opening formula drench valve of band piston cavity pressure relief device according to claim 1, it is characterized in that, fixed by a upper press cover (109) between described relief tube (107) and described valve body (1), fixed by screw (102) between described upper press cover (109) and described valve body (1).
7. the pressurization opening formula drench valve of band piston cavity pressure relief device according to claim 6, is characterized in that, is provided with sealing gasket (103 ') between described upper press cover (109) and described valve body (1).
8. the pressurization opening formula drench valve of band piston cavity pressure relief device according to claim 6, it is characterized in that, also comprise the middle gland (104) for fixing described relief tube (107), described middle gland (104) is inserted in described osculum (13), and the upper end of described middle gland (104) is provided with a flange (111), described flange (111) is pressed on described valve body (1), and described relief tube (107) is through described middle gland (104).
9. the pressurization opening formula drench valve of band piston cavity pressure relief device according to claim 8, is characterized in that, is provided with stuffing box gland (105) between described flange (111) and described valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584139.5A CN105526390A (en) | 2014-10-27 | 2014-10-27 | Pressing open type deluge valve with piston inner cavity pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584139.5A CN105526390A (en) | 2014-10-27 | 2014-10-27 | Pressing open type deluge valve with piston inner cavity pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105526390A true CN105526390A (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410584139.5A Pending CN105526390A (en) | 2014-10-27 | 2014-10-27 | Pressing open type deluge valve with piston inner cavity pressure relief device |
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| Country | Link |
|---|---|
| CN (1) | CN105526390A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269894A (en) * | 2017-07-27 | 2017-10-20 | 南京德沃克自动化有限公司 | The blender of fire-fighting foam solution extinguishing chemical |
| CN107642633A (en) * | 2017-11-09 | 2018-01-30 | 威特龙消防安全集团股份公司 | A kind of datonation-inhibition fire extinguishing high speed pay-out valve |
-
2014
- 2014-10-27 CN CN201410584139.5A patent/CN105526390A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269894A (en) * | 2017-07-27 | 2017-10-20 | 南京德沃克自动化有限公司 | The blender of fire-fighting foam solution extinguishing chemical |
| CN107642633A (en) * | 2017-11-09 | 2018-01-30 | 威特龙消防安全集团股份公司 | A kind of datonation-inhibition fire extinguishing high speed pay-out valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20160427 |