CN204828785U - Safe type water conservation backflow preventer - Google Patents
Safe type water conservation backflow preventer Download PDFInfo
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- CN204828785U CN204828785U CN201520331746.0U CN201520331746U CN204828785U CN 204828785 U CN204828785 U CN 204828785U CN 201520331746 U CN201520331746 U CN 201520331746U CN 204828785 U CN204828785 U CN 204828785U
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- valve
- pressure
- safety
- moisturizing
- leakproof
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Abstract
The utility model provides a safe type water conservation backflow preventer, includes valve body, valve gap and is located inside water intaking valve, outlet valve, wash -out valve and the main valve stem of valve gap still includes sealed check valve of moisturizing switching -over and safe air -vent valve, sealed check valve of moisturizing switching -over and safe air -vent valve will valve body, valve gap internal partitioning are two cavitys in main cavity and the control chamber. The utility model has the beneficial effects of: utilize the sealed check valve of moisturizing switching -over to prevent to control the flow of chamber in to the main cavity, thus, when normal water supply, can effective containment penetrate the control chamber pressure decrease that leads to because draw, effectively avoided the improper of wash -out valve to open, there is the pressure oscillation when low reaches or upper reaches during without water, still can not lead to the sealed check valve of moisturizing switching -over to be opened, and simultaneously, the inside safe air -vent valve device of valve gap, can guarantee that the water supply system upstream pressure is when improper decompression, the chamber wash -out valve can in time be opened in the middle of the backflow preventer, empty.
Description
One, technical field
The utility model relates to field of fluid control, particularly relates to a kind of safety type water saving backflow preventer.
Two, background technique
Present backflow preventer structure on the market, comprise housing and be positioned at the inlet valve of described enclosure interior, outlet valve, drain valve and main valve stem, also comprise elastic sealing device, described enclosure interior is divided into main chamber and control chamber two cavitys by described elastic sealing device, with these three openings of water intake, water outlet and discharge opening on the shell wall in wherein main chamber, described inlet valve, outlet valve and drain valve are arranged on this three openings respectively, one end of described main valve stem is connected with described drain valve, and the other end is connected with described elastic sealing device; Described inlet valve comprises valve seat, valve plate, valve rod and resetting means, is provided with two seals line outside described valve seat with the surface of contact of described valve plate, is provided with some passages between described two seals line, and it is communicated with described control chamber with housing through valve seat.
When backflow preventer inlet pressure produces fluctuation, drain valve frequently can not open sluicing, avoids the waste of water resources.When normal water supply when water intake despite pressure fluctuations, intermittently opening of drain valve can be prevented, but above-mentioned backflow preventer in actual applications, especially when normal water supply, because control chamber is directly communicated with main chamber, under the ejector action of current, control chamber pressure can be caused to reduce, the situation that when even can cause normal water supply, drain valve is opened, has had a strong impact on normal use.Water system upstream pressure is when improper decompression, and backflow preventer intermediate cavity drain valve also can not normally be opened, emptying, is easy to cause valve body to damage.
Three, model utility content
In order to overcome the deficiency of existing field of fluid control, the utility model provides a kind of safety type water saving backflow preventer.
The technical solution of the utility model realizes like this.
A kind of safety type water saving backflow preventer of this programme, it is characterized in that: comprise valve body, valve gap and be positioned at the inlet valve of described valve gap inside, outlet valve, drain valve and main valve stem, also comprise moisturizing commutation leakproof one-way valve and safety pressure-regulating valve, described valve body, valve gap interior separation are main chamber and control chamber two cavitys by described moisturizing commutation leakproof one-way valve and safety pressure-regulating valve;
Described main valve stem bottom is connected with described drain valve, and commutate leakproof one-way valve and safety pressure-regulating valve of top and described moisturizing is connected;
Be provided with two seals line with the surface of contact of described valve plate outside the valve seat of described inlet valve, the valve seat between described potted line is provided with some passages, and any described passage is communicated with described control chamber with the through hole of valve gap inside by valve body,
Through hole in described valve body, valve gap comprises vertical holes and lower vertical holes, and connects the horizontal sector hole of described upper vertical holes and lower vertical holes, and described moisturizing commutation leakproof one-way valve and safety pressure-regulating valve are in described horizontal sector hole;
Described moisturizing commutation leakproof one-way valve effectively can control control chamber to the flowing in main chamber, described safety pressure-regulating valve, and energy assure feed water system upstream pressure is when improper decompression, and backflow preventer intermediate cavity drain valve can be opened in time, emptying.
Described moisturizing commutation leakproof one-way valve comprises the one-way valve back seat be fixedly connected with valve gap, can be connected with described one-way valve back seat slidingly back and forth and front end is the unidirectional valve rod of male cone (strobilus masculinus), should arrange with described one-way valve pole pair and be formed with the one-way valve seat of conical cavity, and being arranged on the Returnning spring between described unidirectional valve rod and one-way valve seat; Described safety pressure-regulating valve comprises the safety pressure-regulating valve back seat be fixedly connected with valve gap, be connected with described safety pressure-regulating valve back seat and front end is the safety pressure-regulating valve valve rod of male cone (strobilus masculinus) adjustable sliding, correspondingly with described safety pressure-regulating valve valve rod arrange and be formed with the safety adjustable-pressure valve seat of conical cavity, and being arranged on the Regulation spring between described safety pressure-regulating valve valve rod and safety adjustable-pressure valve seat.
Usefulness of the present utility model is: utilize moisturizing commutation leakproof one-way valve to prevent control chamber to the flowing in main chamber, like this, when normal water supply, i.e. downstream water demand, when having current by this preventer, can effectively contain because the control chamber pressure that injection causes reduces, effectively prevent the unauthorised opening of drain valve, when downstream is without water, inlet valve is normally closed, if there is pressure surge in upstream, as, pressure reduces, moisturizing commutation leakproof one-way valve still can not be caused to open, simultaneously, the safety adjustable-pressure control valve unit of valve gap inside, energy assure feed water system upstream pressure is when improper decompression, backflow preventer intermediate cavity drain valve can be opened in time, emptying.Backflow preventer intermediate cavity reaches air partition prior to upstream forever, to go less than upstream to ensure that the water in downstream flows backwards forever.
Four, accompanying drawing explanation
Fig. 1 is Organizational Structure schematic diagram of the present utility model.
Fig. 2 is the utility model partial sectional view.
Five, embodiment
Below in conjunction with accompanying drawing, brief description is made to embodiment of the present utility model.
A kind of safety type water saving backflow preventer as shown in the figure, it is characterized in that: comprise valve body, valve gap 1 and be positioned at the inlet valve 2 of described valve gap inside, outlet valve, drain valve and main valve stem 3, also comprise moisturizing commutation leakproof one-way valve and safety pressure-regulating valve 5, described valve body, valve gap interior separation are main chamber and control chamber two cavitys by described moisturizing commutation leakproof one-way valve and safety pressure-regulating valve 5;
Described main valve stem 3 bottom is connected with described drain valve, and commutate leakproof one-way valve and safety pressure-regulating valve 5 of top and described moisturizing is connected;
Be provided with two seals line with the surface of contact of described valve plate outside the valve seat of described inlet valve, the valve seat between described potted line is provided with some passages 4, and any described passage 4 is communicated with described control chamber by the through hole of valve body with valve gap 1 inside,
Through hole in described valve body, valve gap 1 comprises vertical holes 41 and lower vertical holes 42, and connects the horizontal sector hole of described upper vertical holes 41 and lower vertical holes 42, and described moisturizing commutation leakproof one-way valve and safety pressure-regulating valve 5 are in described horizontal sector hole;
Described moisturizing commutation leakproof one-way valve effectively can control control chamber to the flowing in main chamber, described safety pressure-regulating valve 5, and energy assure feed water system upstream pressure is when improper decompression, and backflow preventer intermediate cavity drain valve can be opened in time, emptying.
Described moisturizing commutation leakproof one-way valve comprises the one-way valve back seat 51 be fixedly connected with valve gap 1, can be connected with described one-way valve back seat 51 slidingly back and forth and front end is the unidirectional valve rod 53 of male cone (strobilus masculinus), correspondingly with described unidirectional valve rod 53 arrange and be formed with the one-way valve seat 58 of conical cavity, and being arranged on the Returnning spring 57 between described unidirectional valve rod 53 and one-way valve seat 58; Described safety pressure-regulating valve 5 comprises the safety pressure-regulating valve back seat 52 be fixedly connected with valve gap 1, be connected with described safety pressure-regulating valve back seat 52 and front end is the safety pressure-regulating valve valve rod 55 of male cone (strobilus masculinus) adjustable sliding, correspondingly with described safety pressure-regulating valve valve rod 55 arrange and be formed with the safety adjustable-pressure valve seat 56 of conical cavity, and being arranged on the Regulation spring 54 between described safety pressure-regulating valve valve rod 55 and safety adjustable-pressure valve seat 56.
The working procedure of this example: the utility model arranges moisturizing commutation leakproof one-way valve and safety pressure-regulating valve in the through hole of valve body, one-way valve moisturizing commutation leakproof one-way valve and safety pressure-regulating valve is utilized to prevent control chamber to the flowing in main chamber, like this, when normal water supply, i.e. downstream water demand, when having current by this preventer, can effectively contain because the control chamber pressure that injection causes reduces, effectively prevent the unauthorised opening of drain valve, when downstream is without water, inlet valve is normally closed, if there is pressure surge in upstream, as, pressure reduces, one-way valve still can not be caused to open, simultaneously, safety adjustable-pressure control valve unit, energy assure feed water system upstream pressure is when improper decompression, backflow preventer intermediate cavity drain valve can be opened in time, emptying.Backflow preventer intermediate cavity reaches air partition prior to upstream forever, to go less than upstream to ensure that the water in downstream flows backwards forever.
Through hole in described valve body comprises vertical holes 41 and lower vertical holes 42, and upper vertical holes described in connecting and the horizontal sector hole of lower vertical holes, described moisturizing commutation leakproof one-way valve and safety pressure-regulating valve 5 are arranged in described horizontal segment, moisturizing commutated leakproof one-way valve and safety pressure-regulating valve is placed on horizontal segment, effectively simplify installation requirements, preferably, described moisturizing commutation leakproof one-way valve and safety pressure-regulating valve comprise and to be fixedly connected with leakproof one-way valve back seat 51 and safety pressure-regulating valve the back seat 52 and moisturizing that center is formed with through hole commutates with valve body, in the through hole that can be arranged on described moisturizing commutation leakproof one-way valve back seat slidingly back and forth and front end is moisturizing commutation leakproof one-way valve bar 53 and the safety pressure-regulating valve valve rod 55 of male cone (strobilus masculinus), commutating with described moisturizing, leakproof one-way valve bar and safety pressure-regulating valve valve rod are corresponding respectively arranges leakproof one-way valve seat 54 and safety adjustable-pressure the valve seat 56 and moisturizing being formed with corresponding conical cavity commutates, and the Returnning spring 57 be arranged between described moisturizing commutation leakproof one-way valve bar and moisturizing commutation leakproof one-way valve seat and the Regulation spring 55 between safety pressure-regulating valve valve rod and safety adjustable-pressure valve seat, namely, moisturizing commutation leakproof one-way valve seat and moisturizing commutate leakproof one-way valve bar and be head-on provided with the flange of position reset spring and Regulation spring between safety pressure-regulating valve valve rod and safety adjustable-pressure valve seat mutually, conical surface seal is utilized to realize non-return sealing, adopt linear type moisturizing commutation leakproof one-way valve and safety pressure-regulating valve, further simplify processing and installation steps, improve commercial viability, reduce enterprise's processing cost.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (2)
1. a safety type water saving backflow preventer, it is characterized in that: comprise valve body, valve gap (1) and be positioned at the inlet valve (2) of described valve gap inside, outlet valve, drain valve and main valve stem (3), also comprise moisturizing commutation leakproof one-way valve and safety pressure-regulating valve (5), described valve body, valve gap interior separation are main chamber and control chamber two cavitys by described moisturizing commutation leakproof one-way valve and safety pressure-regulating valve (5);
Described main valve stem (3) bottom is connected with described drain valve, and commutate leakproof one-way valve and safety pressure-regulating valve (5) of top and described moisturizing is connected;
Two seals line is provided with the surface of contact of the valve plate of described inlet valve outside the valve seat of described inlet valve, valve seat between described potted line is provided with some passages (4), any described passage (4) is communicated with described control chamber by the through hole that valve body is inner with valve gap (1)
Through hole in described valve body, valve gap (1) comprises vertical holes (41) and lower vertical holes (42), and connecting the horizontal sector hole of described upper vertical holes (41) and lower vertical holes (42), described moisturizing commutation leakproof one-way valve and safety pressure-regulating valve (5) are in described horizontal sector hole;
Described moisturizing commutation leakproof one-way valve effectively can control control chamber to the flowing in main chamber, described safety pressure-regulating valve (5), energy assure feed water system upstream pressure is when improper decompression, and backflow preventer intermediate cavity drain valve can be opened in time, emptying.
2. a kind of safety type water saving backflow preventer according to claim 1, it is characterized in that: described moisturizing commutation leakproof one-way valve comprises the one-way valve back seat (51) be fixedly connected with valve gap (1), can be connected with described one-way valve back seat (51) slidingly back and forth and front end is the unidirectional valve rod (53) of male cone (strobilus masculinus), correspondingly with described unidirectional valve rod (53) arrange and be formed with the one-way valve seat (58) of conical cavity, and being arranged on the Returnning spring (57) between described unidirectional valve rod (53) and one-way valve seat (58); Described safety pressure-regulating valve (5) comprises the safety pressure-regulating valve back seat (52) be fixedly connected with valve gap (1), be connected with described safety pressure-regulating valve back seat (52) and front end is the safety pressure-regulating valve valve rod (55) of male cone (strobilus masculinus) adjustable sliding, correspondingly with described safety pressure-regulating valve valve rod (55) arrange and be formed with the safety adjustable-pressure valve seat (56) of conical cavity, and being arranged on the Regulation spring (54) between described safety pressure-regulating valve valve rod (55) and safety adjustable-pressure valve seat (56).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520331746.0U CN204828785U (en) | 2015-05-20 | 2015-05-20 | Safe type water conservation backflow preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520331746.0U CN204828785U (en) | 2015-05-20 | 2015-05-20 | Safe type water conservation backflow preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204828785U true CN204828785U (en) | 2015-12-02 |
Family
ID=54686388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520331746.0U Expired - Fee Related CN204828785U (en) | 2015-05-20 | 2015-05-20 | Safe type water conservation backflow preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204828785U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461509A (en) * | 2017-10-09 | 2017-12-12 | 铜陵天海流体控制股份有限公司 | A kind of high reliability elastic soft sealing gate valve |
| WO2018141185A1 (en) * | 2017-02-06 | 2018-08-09 | 广东永泉阀门科技有限公司 | Reduced-pressure type backflow preventer |
| CN109027331A (en) * | 2018-10-30 | 2018-12-18 | 天津市塘沽第阀门有限公司 | A kind of backflow preventer inlet valve with damage self-checking function |
-
2015
- 2015-05-20 CN CN201520331746.0U patent/CN204828785U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018141185A1 (en) * | 2017-02-06 | 2018-08-09 | 广东永泉阀门科技有限公司 | Reduced-pressure type backflow preventer |
| CN107461509A (en) * | 2017-10-09 | 2017-12-12 | 铜陵天海流体控制股份有限公司 | A kind of high reliability elastic soft sealing gate valve |
| CN109027331A (en) * | 2018-10-30 | 2018-12-18 | 天津市塘沽第阀门有限公司 | A kind of backflow preventer inlet valve with damage self-checking function |
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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: 20151202 |