CN104633195A - Pressure safety valve for low-water-pressure water storage type electric water heater - Google Patents
Pressure safety valve for low-water-pressure water storage type electric water heater Download PDFInfo
- Publication number
- CN104633195A CN104633195A CN201510064953.9A CN201510064953A CN104633195A CN 104633195 A CN104633195 A CN 104633195A CN 201510064953 A CN201510064953 A CN 201510064953A CN 104633195 A CN104633195 A CN 104633195A
- Authority
- CN
- China
- Prior art keywords
- water
- cover plate
- valve body
- valve
- pressure
- 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.)
- Granted
Links
Classifications
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a pressure safety valve for low-water-pressure water storage type electric water heater. The pressure safety valve comprises a shell body and a valve element arranged in the shell body. The valve element is arranged between a water inlet and a water outlet of the shell body. A plug screw surrounding the lower end of the valve element is arranged at the water inlet of the shell body. The lower end of the valve element is in line contact with the plug screw. The valve element comprises a valve body, a cover plate tightly connected with the valve body, a guiding rod with the upper end arranged on the cover plate in a movably-penetrating mode and a spring arranged at the lower end of the guiding rod. The other end of the spring is connected with the valve body. A gasket is arranged on the guiding rod in a sleeved mode. The upper surface of the gasket is in contact with the lower surface of the cover plate. According to the pressure safety valve, when water does not enter, the arc face at the lower end of the valve body is pressed on the cone face of the screw plug through gravity, line contact forms linear sealing, during working, water flows in, the valve element is pushed open, water enters the water heater, when pressure in the water heater is too high, the spring is compressed, water flows out through a decompression hole through the valve body and the plug screw, and the purpose of inner decompression is achieved.
Description
Technical field
The invention belongs to storage-type electric water heater technical field, be specifically related to a kind of pressure relief valve for low hydraulic pressure storage-type electric water heater.
Background technique
Storage-type electric water heater refers to the fixed utensil heated by water, and it for a long time or temporary reservoir hot water, and can be equipped with the device controlling or limit water temperature.At present, the special pressure safety valve of storage-type electric water heater water inlet position, when intaking, breakout pressure needs to reach 2m to 10m height water column, normal need of work is wanted to reach 5m height water column, but in the area that some hydraulic pressure are less, such as vast rural area, a lot of local hydraulic pressure is less than 5m height water column, cause safety valve not open completely, have a strong impact on water heater and normally use.
Summary of the invention
The object of the invention is to solve the problem, the pressure relief valve that when providing a kind of spool to open completely only to need 2cm height water column, low hydraulic pressure, inflow is large.
For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of pressure relief valve for low hydraulic pressure storage-type electric water heater, and comprise housing and the spool being located at enclosure interior, spool is between the water intake and water outlet of housing; The water inlet of housing is provided with the plug screw surrounding spool lower end, and the lower end of spool and plug screw are linear contact lay; Described spool comprises valve body, is arranged in the guide rod of cover plate with the close-connected cover plate of valve body, movable upper end and is sheathed on the spring of guide rod lower end, the other end of spring is connected with valve body, guide rod is arranged with packing ring, and the upper surface of packing ring contacts with the lower surface of cover plate.
Preferably, described cover plate is provided with the pilot hole passed for guide rod and the relief hole passed through for current, and relief hole is positioned within the regional extent of cover plate and washer contacts.
Preferably, described spool also comprises the steel ring be arranged on valve interior wall.
Preferably, the contacting point of described plug screw and housing is provided with seal ring.
Preferably, the density of described spool is greater than the density of water.
Preferably, the lower end of described valve body is arc surface, and the upper end of plug screw is the conical surface.
Preferably, the density of material of described valve body, guide rod and cover plate is all greater than 1g/cm
3.
The invention has the beneficial effects as follows: the pressure relief valve for low hydraulic pressure storage-type electric water heater provided by the present invention, when not intaking, valve body lower end arc surface leans on gravity pressure on the plug screw conical surface, linear contact lay forms line style sealing, and during work, current enter and spool is backed down, and water enters water heater; When water heater internal pressure is too high, spring-compressed, water flows out from relief hole through valve body, plug screw, the object of pressure release in realizing.
Accompanying drawing explanation
Fig. 1 is the structural representation of pressure relief valve of the present invention;
Fig. 2 is the plan view of cover plate of the present invention.
Description of reference numerals: 1, housing; 11, water intake; 12, water outlet; 2, valve body; 3, cover plate; 31, pilot hole; 32, relief hole; 4, packing ring; 5, guide rod; 6, spring; 7, steel ring; 8, plug screw; 9, seal ring.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described further:
As depicted in figs. 1 and 2, pressure relief valve for low hydraulic pressure storage-type electric water heater of the present invention, comprise housing 1 and the spool being located at housing 1 inside, spool is between the water intake 11 and water outlet 12 of housing 1, water intake 11 is connected with water source (such as tap water), and water outlet 12 is connected with water heater; Water intake 11 place of housing 1 is provided with the plug screw 8 surrounding spool lower end, and lower end and the plug screw 8 of spool are linear contact lay.
Spool comprises valve body 2, cover plate 3, packing ring 4, guide rod 5 and spring 6, and valve body 2 is the structure of hollow, and cover plate 3, packing ring 4, guide rod 5 and spring 6 are all positioned at valve body 2, cover plate 3 and valve body 2 compact siro spinning technology, and guide rod 5 movable upper end is arranged in cover plate 3; One end of spring 6 is sheathed on the lower end of guide rod 5, and the other end of spring 6 is connected with valve body 2; Packing ring 4 is sheathed on guide rod 5, and the upper surface of packing ring 4 contacts with the lower surface of cover plate 3.In the present embodiment, the middle part of guide rod 5 is provided with packing ring 4 and the spacing boss of spring 6, and spring 6 abuts with the lower surface of boss, and packing ring 4 abuts with the upper surface of boss.
Slide up and down for the ease of guide rod 5, cover plate 3 is provided with the pilot hole 31 passed for guide rod 5, and pilot hole 31 leads for guide rod 5, and the aperture of pilot hole 31 is slightly larger than the diameter of guide rod 5; Pass through for the ease of current during pressure release, cover plate 3 is also provided with relief hole 32, in water heater heating process, when water heater internal pressure and tap water pressure reduction reach 3m to 6m height water column, spring 6 compresses, and water flows out from relief hole 32 through valve body 2, plug screw 8, the object of pressure release in realizing.Conveniently process, relief hole 32 in the present embodiment is arcuate socket, be positioned at pilot hole 31 both sides and be communicated with pilot hole 31, but when specifically implementing, relief hole 32 can be the through hole of one or more arbitrary shape, and is not necessarily communicated with pilot hole 31, only need ensure that relief hole 32 is positioned within the regional extent that cover plate 3 contacts with packing ring 4, thus when not needing pressure release, packing ring 4 under the effect of spring 6 with cover plate 3 close contact.
In the present embodiment, the lower end of valve body 2 is arc surface, and the upper end of plug screw 8 is the conical surface, and each part material of spool all selects density to be greater than 1g/cm
3corrosion resistance engineering plastics molding and forming manufacture, namely the density of material of valve body 2, guide rod 5 and cover plate 3 is all greater than 1g/cm
3; Spool also comprises the steel ring 7 be arranged on valve body 2 inwall, increases the weight of the overall weight of spool; Thus the global density of spool is greater than the density of water, when not intaking, valve body 2 lower end arc surface is by gravity pressure on plug screw 8 conical surface, and linear contact lay forms line style sealing, and during work, current enter and spool is backed down, and water enters water heater.
In order to keep the tightness of pressure relief valve entirety, the contacting point of plug screw 8 and housing 1 is provided with seal ring 9.
In the present embodiment, plug screw 8 is also greater than 1g/cm by density
3corrosion resistance engineering plastics molding and forming manufacture, packing ring 4 adopts rubber pattern molded, and steel ring 7 adopts stainless steel shaping through punch process, and shell 1 is machining after adopting forge hot, the standard piece of spring 6 for purchasing.
Because pressure relief valve of the present invention has above-mentioned shape, structure and material requirements, make spool open required hydraulic pressure completely and be far smaller than hydraulic pressure when usual pressure safety valve is opened completely, therefore spool can be realized open hydraulic pressure only 2cm height water column completely, the object that low hydraulic pressure inflow is large.
Those of ordinary skill in the art will appreciate that, embodiment described here is to help reader understanding's principle of the present invention, should be understood to that protection scope of the present invention is not limited to so special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combination of not departing from essence of the present invention according to these technology enlightenment disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (7)
1., for a pressure relief valve for low hydraulic pressure storage-type electric water heater, it is characterized in that:
Comprise housing (1) and be located at the inner spool of housing (1), spool is positioned between the water intake (11) of housing (1) and water outlet (12); Water intake (11) place of housing (1) is provided with the plug screw (8) surrounding spool lower end, and the lower end of spool and plug screw (8) are linear contact lay;
Described spool comprises valve body (2), is arranged in the guide rod (5) of cover plate (3) with valve body (2) close-connected cover plate (3), movable upper end and is sheathed on the spring (6) of guide rod (5) lower end, the other end of spring (6) is connected with valve body (2), guide rod (5) is arranged with packing ring (4), the upper surface of packing ring (4) contacts with the lower surface of cover plate (3).
2. according to pressure relief valve according to claim 1, it is characterized in that: described cover plate (3) is provided with the pilot hole (31) passed for guide rod (5) and the relief hole (32) passed through for current, relief hole (32) is positioned within the regional extent that cover plate (3) contacts with packing ring (4).
3. according to the pressure relief valve described in claim 1 or 2, it is characterized in that: described spool also comprises the steel ring (7) be arranged on valve body (2) inwall.
4. the pressure relief valve described in claim 1 or 2, is characterized in that: the contacting point of described plug screw (8) and housing (1) is provided with seal ring (9).
5. the pressure relief valve described in claim 1 or 2, is characterized in that: the density of described spool is greater than the density of water.
6. the pressure relief valve described in claim 1 or 2, is characterized in that: the lower end of described valve body (2) is arc surface, and the upper end of plug screw (8) is the conical surface.
7. the pressure relief valve described in claim 1 or 2, is characterized in that: the density of material of described valve body (2), guide rod (5) and cover plate (3) is all greater than 1g/cm
3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510064953.9A CN104633195B (en) | 2015-02-09 | 2015-02-09 | A kind of pressure safety valve for low hydraulic pressure storage-type electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510064953.9A CN104633195B (en) | 2015-02-09 | 2015-02-09 | A kind of pressure safety valve for low hydraulic pressure storage-type electric water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104633195A true CN104633195A (en) | 2015-05-20 |
| CN104633195B CN104633195B (en) | 2017-08-01 |
Family
ID=53212265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510064953.9A Active CN104633195B (en) | 2015-02-09 | 2015-02-09 | A kind of pressure safety valve for low hydraulic pressure storage-type electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104633195B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2575556Y (en) * | 2002-10-27 | 2003-09-24 | 万佩柳 | Antifreezing device for solar water heater |
| CN2620219Y (en) * | 2003-02-12 | 2004-06-09 | 陈霖 | Safety valve with protective net |
| CN2672559Y (en) * | 2003-08-18 | 2005-01-19 | 詹征 | Safety valve reflux structure of electric water heater |
| CN2895933Y (en) * | 2006-03-15 | 2007-05-02 | 胡龙 | Electric water-heater decompression valve of plane sealing |
| CN201739580U (en) * | 2010-07-28 | 2011-02-09 | 陈海峰 | Safety valve of water heater |
| JP2011169334A (en) * | 2010-02-16 | 2011-09-01 | Danrei:Kk | Pressure relief valve |
| CN204477410U (en) * | 2015-02-09 | 2015-07-15 | 成都前锋电子有限责任公司 | A kind of pressure relief valve for low hydraulic pressure storage-type electric water heater |
-
2015
- 2015-02-09 CN CN201510064953.9A patent/CN104633195B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2575556Y (en) * | 2002-10-27 | 2003-09-24 | 万佩柳 | Antifreezing device for solar water heater |
| CN2620219Y (en) * | 2003-02-12 | 2004-06-09 | 陈霖 | Safety valve with protective net |
| CN2672559Y (en) * | 2003-08-18 | 2005-01-19 | 詹征 | Safety valve reflux structure of electric water heater |
| CN2895933Y (en) * | 2006-03-15 | 2007-05-02 | 胡龙 | Electric water-heater decompression valve of plane sealing |
| JP2011169334A (en) * | 2010-02-16 | 2011-09-01 | Danrei:Kk | Pressure relief valve |
| CN201739580U (en) * | 2010-07-28 | 2011-02-09 | 陈海峰 | Safety valve of water heater |
| CN204477410U (en) * | 2015-02-09 | 2015-07-15 | 成都前锋电子有限责任公司 | A kind of pressure relief valve for low hydraulic pressure storage-type electric water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104633195B (en) | 2017-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105202217A (en) | Ball relief valve with pressure relief function | |
| CN204477410U (en) | A kind of pressure relief valve for low hydraulic pressure storage-type electric water heater | |
| CN103655030B (en) | A kind of electric heating water bag explosion-proof relief valve | |
| CN104633195A (en) | Pressure safety valve for low-water-pressure water storage type electric water heater | |
| CN203718015U (en) | Ball valve with safety valve | |
| CN204573271U (en) | A kind of electromagnetic valve coil with waterproof construction | |
| CN103655031B (en) | There is the electric hot-water bag of decompression function | |
| CN204629429U (en) | A kind of steam raising plant | |
| CN204213353U (en) | The blowdown suction valve that a kind of water heater structure improves | |
| CN204192348U (en) | Delay cut-off valve of electric pressure cooker | |
| CN206771763U (en) | A kind of Contiuum type anti-leakage electric boiling hot water boiler | |
| CN216692301U (en) | Water heater relief valve with leak protection water | |
| CN203691668U (en) | Natural gas electromagnetic heater | |
| CN213332949U (en) | Pressure water pump with anti-overflow structural design | |
| CN202580266U (en) | Plumbing current limiting device | |
| CN203686236U (en) | Deluge alarm valve | |
| CN204025760U (en) | Anti-scald water tap | |
| CN209024809U (en) | A kind of safety-type cap presses | |
| CN203580207U (en) | Improved open type air path for air cushion of mechanical press | |
| CN101957066B (en) | Safety device of water storage type electric water heater and use method thereof | |
| CN208619849U (en) | A kind of valve water-quantity regulating device | |
| CN207395181U (en) | A kind of energy-saving hot-water heating unit | |
| CN205835832U (en) | A kind of slide block oil cylinder fixed structure for injection mold | |
| CN201651462U (en) | Self-cleaning type energy-saving and pressure-releasing safety valve | |
| CN205841865U (en) | A kind of special pressure relief ball valve of high-pressure fine water mist fire-extinguishing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |