CN103672067A - Voltage-sensitive limit water inlet and water shortage protective device - Google Patents
Voltage-sensitive limit water inlet and water shortage protective device Download PDFInfo
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- CN103672067A CN103672067A CN201310721672.7A CN201310721672A CN103672067A CN 103672067 A CN103672067 A CN 103672067A CN 201310721672 A CN201310721672 A CN 201310721672A CN 103672067 A CN103672067 A CN 103672067A
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- water
- dish
- valve
- water inlet
- sensitive
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Classifications
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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
- 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
- F16K17/06—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 with special arrangements for adjusting the opening pressure
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
- F16K31/1264—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded with means to allow the side on which the springs are positioned to be altered
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Safety Valves (AREA)
Abstract
A voltage-sensitive limit water inlet and water shortage protective device comprises a template assembly installed between an upper dish-shaped valve shell and a lower dish-shaped valve shell. A closed space formed between the lower dish-shaped valve shell and the template assembly is communicated with a water storage cavity of a water boiler through a pipe base. A space formed between the upper dish-shaped valve shell and a rubber template is communicated with the atmosphere. A guide ejector rod between the rubber template and the upper dish-shaped valve shell is used for controlling a microswitch. The pipe base is provided with a tee valve body, a valve plug assembly controlling the water feeding of the tee valve body is installed in the tee valve body, and the valve plug assembly is connected with the lower end of the template assembly. The voltage-sensitive limit water inlet and water shortage protective device further comprises the microswitch controlled by the guide ejector rod. The voltage-sensitive limit water inlet and water shortage protective device does not need to be installed on the water surface, is not supported by water level detection or a logic circuit, does not occupy the height space of a boiler furnace area of the water boiler, and fully integrates the water inlet protection and water shortage protection functions of an electric heat water boiler, the problem of water shortage protection does not need to be solved independently, and the voltage-sensitive limit water inlet and water shortage protective device is simple in structure, stable in performance, high in adaptability and low in cost, and is a water inlet valve applicable to various electric heat water boilers and water tanks.
Description
Technical field
The present invention relates to a kind of pressure-sensitive spacing water inlet and water-shortage protection device of heating water boiler, for heating water boiler or water tank water intake and water level, control and provide excessive low water level protection signal.
Background technique
It is puzzlement electric water heater research staff's key problem that automatic electric water boiler water inlet is controlled with excessive low water level protection with water level always; Ball float in one's early years---lever inlet valve often leaks on the one hand, causes heating water boiler often to produce water, unfavorable to drink person's health; Ball float---lever inlet valve, in heating water boiler inner water tank installing space and specific setting height(from bottom) requirement that need to be larger, have seriously limited electric water heater moulding and structural design, has also increased the cost of heating water boiler in addition.
What occur after a while utilizes water resistance principle, electrode detector water level, and the solenoid valve water intake mode that logical circuit is controlled, needs electronic circuit support, uses electronic circuit to produce may greatly increasing of fault in the environment of high temperature, high humidity, and rate of fault increases substantially; Because producing incrustation scale on electrode, often affect water-level detecting function, and cleaning electrode needs the mounting point of an opening for maintenance operation, thereby bring many troubles to structural design; Also need to pay higher cost.
The ball float inlet valve using on early stage railway passenger electric heating water boiler for vehicle, employing be ball float vertical top type inlet valve, because source pressure only has 45Kp, can not be applicable to municipal water supply pressure and can not promote.
Most of electric water heaters all need there is excessive low water level protection function, consider many-sided reasons such as cost, structure, should when solving water inlet problem, solve; Adopting ball float---the heating water boiler of lever water inlet has directly been abandoned excessive low water level protection function; The electrode that the heating water boiler that adopts water resistance principle to control solenoid valve water inlet is used and logical circuit detecting water level are also controlled the control mode of heating, but because more difficult adaptation hot and humid environment, poor reliability, maintenance rate are high, very not welcome.
Summary of the invention
The object of the invention is to provide a kind of pressure-sensitive spacing water inlet and water-shortage protection device for heating water boiler, to overcome the above-mentioned deficiency of prior art.
Pressure-sensitive spacing water inlet and a water-shortage protection device, is characterized in that comprising the template assembly being arranged between the upper valve casing of dish and the lower valve casing of dish,
Described template assembly comprises rubber form, a pair of clamping plate and guiding push rod, this rubber form is disc-shaped structure, and in submarginal position, be provided with arcuation ring fold, and this fold raises up, discoidal clamping plate are clipped in the upper and lower both sides of rubber form, the diameter of described clamping plate is less than the diameter of described ring fold, and described rubber form and clamping plate thereof are installed on the underpart of guiding push rod;
The confined space forming between the lower valve casing of dish and template assembly communicates with heating water boiler water storage cavity by base, and the space forming between valve casing and rubber form on dish is connected with atmosphere;
On guiding push rod on rubber form and dish between valve casing, be set with balance spring and spring bearer plate; Be nested with the adjusting screw mandrel on guiding push rod top by above screw on dish in valve casing and withstand on spring bearer plate, set up after water level with set screw nut by adjustings screw mandrel and dish above valve casing be locked as one;
On described base, three way valve is housed, the cypriot valve components of controlling three way valve water inlet is housed in three way valve, described cypriot valve components is connected with template assembly lower end;
Also comprise the sensitive switch of being controlled by above-mentioned guiding push rod.
Described microswitch component comprises sensitive switch, scaffold, tightens screw and tightening nut; Scaffold is with the locking nut of disjunctor with it, sensitive switch by scaffold, locking nut, tightening nut be fastened on dish on valve casing be locked as on the adjustable lever of one, and the guiding push rod on template assembly contacts with the reed of switch;
Switch motion point moves while being set in predetermined excessive low water level protection water level; The normal battle of limit switch is as excessive low water level protection contact.
Described template assembly also comprises clamping fixing body and mounting nuts, and for template and clamping plate are tightened to one, and clamping fixing body is connected with above-mentioned guiding push rod on its axial direction.
Centered by described clamping plate, with the disc-shaped structure body of pilot hole, between the centerand edge of clamping plate, there is the loop configuration towards a side projection.
During preparation, described cypriot valve components is by valve rod, and the cock body of valve rod lower end, bullet pad and nut form, and valve rod is arranged on the clamping fixing body of template assembly via screw.Valve rod is arranged on the clamping fixing body of rubber form via screw; There is ' ten ' word (or ' one ' word) shape hinge valve rod upper end with guiding push rod lower end, the rotation when cock body suppress to be installed, bullet pad via fastening nuts between cock body and nut.
Valve port sheet is housed in three way valve lower nozzle, and to intake, base is locked as one with rubber pad enforcement sealing by valve port sheet and three way valve; Cypriot valve components is arranged on template assembly through the center hole of valve port sheet, and cypriot valve components template assembly moves up and down, and the center hole that template assembly increases with its downforce the valve plug betting contest valve port sheet on drive cypriot valve components that rises stops into water.
Know-why of the present invention is as follows: the pressure of liquid internal is directly proportional to the degree of depth; If pressure, the another side of a load bearing fluid inside being installed at the certain depth of liquid communicate with atmosphere, the template of particular area, the pressure of water level in reflection container is transformed into the displacement being directly proportional to this pressure by template and a spring, utilize this displacement drive valve plug to open or close port, can realize spacing water inlet and intake control and functional part can be transferred to the ideal space of product again; Also excessive low water level protection function is effectively completed simultaneously; To realize freely designing of heating water boiler structure and moulding.
The present invention has outstanding feature than existing various inlet valves:
The present invention utilizes the pressure of liquid internal and the relation of the degree of depth; The pressure of water level in reflection container is transformed into the displacement being directly proportional to this pressure by template and a spring, utilizes this displacement drive valve plug to open or close port, realize spacing water inlet.
The present invention's design mainly for heating water boiler water inlet, unlike ball float---need to be arranged on (mounting point is limited) on the water surface lever inlet valve, also unlike solenoid valve, also need water level detecting and logical circuit support and take heating water boiler flue region height space; For heating water boiler structure and shape-designing have left sufficient leeway.
The present invention is fully fused to electric water heater water inlet and excessive low water level protection function all over the body, does not need to solve separately excessive low water level protection problem.
The present invention is simple in structure, stable performance, strong adaptability, cost are low, is a kind of inlet valve that is adapted to various electric water heaters and water tank.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention,
Wherein, Fig. 1 a is sectional drawing of the present invention, and Fig. 1 b is profile schematic diagram.
Fig. 2 is the schematic diagram of template assembly of the present invention,
Wherein, Fig. 2 a is sectional view, and Fig. 2 b is profile schematic diagram.
Fig. 3 is rubber form structural representation of the present invention,
Wherein, Fig. 3 a is sectional view, and Fig. 3 b is profile schematic diagram.
Fig. 4 is the structural representation of valve plug of the present invention.
Wherein, Fig. 4 a is sectional view, and Fig. 4 b is stereogram.
Fig. 5 is that sensitive switch of the present invention forms structural representation.
Wherein, Fig. 4 a is that sensitive switch of the present invention forms sectional view, and Fig. 4 b is profile schematic diagram.
Fig. 6 is that the inlet valve for water tank water intake of the present invention forms structural representation.
Wherein, Fig. 5 a is that the inlet valve for water tank water intake of the present invention forms sectional view, and Fig. 5 b is profile schematic diagram.
Wherein: 1, valve casing on dish, 2, the lower valve casing of dish, 3, balance spring, 4, spring bearer plate, 5, regulate screw mandrel, 6, set screw nut, 7, valve port sheet, 8, three way valve, 9, water inlet base, A, template assembly, A1, template, A11, arcuation annulus fold, A12, pilot hole, A13, mounting hole, A2, clamping plate, A3, clamp screw, A4, clamping fixing body, A5, guiding push rod; B, microswitch component, B1, sensitive switch, B2, scaffold, B3, tighten screw, B4, tightening nut, C, cypriot valve components, C1, valve rod, C2, valve plug, C3, bullet pad, C4, nut, P, base.
Embodiment
As shown in Fig. 1-6, the present invention includes one by template A1, clamping plate A2, mounting nuts A3, the template assembly A that clamps fixing body A4 and guiding push rod A5, form, with valve casing 2 under valve casing on dish 1, butterfly, also have by valve rod C1,, valve plug C2, bullet pad C3, nut C4, the cypriot valve components C forming and by sensitive switch B1, scaffold B2, tighten microswitch component B and three way valve 8, valve port sheet 7, balance spring 3, spring bearer plate 4 that screw B3, tightening nut B4 form, regulate screw mandrel 5, set screw nut 6, water inlet base 9 and seal rubber pad etc.; It is characterized in that by the template A12 that has several mounting hole A13 that are uniformly distributed along the circumference, center to have pilot hole with arc-shaped transition annular fold A11, edge and be clipped in template both sides formwork splint A2 and center is equipped with guiding push rod A5, template A1 and the fastening all-in-one-piece of clamping plate A2 can be clamped to the template assembly A that fixing body A4 and mounting nuts A3 form; Template assembly A is arranged under the upper valve casing 1 of dish and butterfly between valve casing 2, and balance spring 3 and spring bearer plate 4 are housed on the assembling axis between template assembly A and upper valve casing 1; Its periphery is referred to as source actuation mechanism by the fastened by screw of suitable quantity with regard to the switching mechanism that has formed template axial displacement and be directly proportional to pressure.
Described adjusting screw mandrel 5 is screwed in, is withstood on spring bearer plate 4 by center, upper valve casing upper end, after setting water level, with set screw nut 6, adjusting screw mandrel 5 and upper valve casing 1 is locked as to one.Lower valve casing center portion has the silk seat of downward protrusion to be connected with the three way valve 8 that is similar to internal thread threeway, with sealing gasket, seals; Valve port sheet 07 is housed in the downward opening of three way valve 8 and with two seal rubber pads, base 9 is fastening to intake, and forms valve body part.
Described cypriot valve components C is by valve rod C1, valve plug C2, and bullet pad C3 and nut C4 form, and during assembling, are first disintegrated, in source actuation mechanism is assembled, valve rod C1 are arranged on the clamping fixing body A4 of template assembly A with installation screw; Valve rod 31 upper ends and have ' ten ' word (or ' one ' word) shape hinge with the guiding push rod A5 lower end on template assembly, rotation while valve plug C2 being installed in order to inhibition, after valve port sheet 7 is installed, be installed into water tube base 9 before valve plug C2, bullet pad C3 and nut C4 install.
Described microswitch component B, by sensitive switch B1, scaffold B2, tighten screw B3 and tightening nut B4 forms; Sensitive switch B1 by scaffold B2 and with it the locking nut B3 of disjunctor by tightening nut B4, be fastened on upper valve casing and be locked as on the spring adjustable lever 5 of one, the guiding push rod A5 on template assembly A withstands on the reed of sensitive switch; Adjust up and down when microswitch component B5 position is set in predetermined excessive low water level protection water level by sensitive switch B1 operating point and move; The normal battle of sensitive switch B1 is as excessive low water level protection contact.
Embodiment 1
Be that the general inlet valve of ability of swimming electric water heater is turned in temperature-control type electric water heater and boiling as shown in Figure 1, it comprises heating water boiler automatic feeding water and two functions of excessive low water level protection; As long as the pressure-sensitive level-limiting water inlet valve shown in Fig. 1 and excessive low water level protection are arranged on to heating water boiler flue bottom specified altitude (water level in relative flue requires); adjust spring precompressed amount and for the operating point of the sensitive switch B1 of excessive low water level protection, just can meet all heating water boilers water inlet water levels and control and excessive low water level protection requirement.
Embodiment 2
Be on the basis of Fig. 1, to remove the remainder after sensitive switch B5 as shown in Figure 6, just can be used as the pressure-sensitive level-limiting water inlet valve of common water tank; Adjust spring precompressed amount and just can meet water tank water intake water level control requirement.
Its concrete structure is as follows:
A pressure-sensitive level-limiting water inlet valve, is characterized in that comprising the template assembly A being arranged between the upper valve casing 1 of dish and the lower valve casing 2 of dish,
Described template assembly A comprises rubber form A1, a pair of clamping plate A2 and guiding push rod A5, this rubber form A1 is disc-shaped structure, and in submarginal position, be provided with arcuation ring fold A11, and this fold A11 raises up, discoidal clamping plate A2 is clipped in the upper and lower both sides of rubber form A1, the diameter of described clamping plate A2 is less than the diameter of described ring fold A11, and described rubber form A1 and clamping plate A2 thereof are installed on the underpart of guiding push rod A5; The confined space forming between the lower valve casing 2 of dish and template assembly A communicates with heating water boiler water storage cavity by base P, and on dish, between valve casing 1 and rubber form 2, the space of formation is connected with atmosphere.
On guiding push rod A5 on rubber form A1 and dish between valve casing 1, be set with balance spring 3 and spring bearer plate 4; Be nested with the adjusting screw mandrel 5 on guiding push rod A5 top by above screw on dish valve casing 1 in and withstand on spring bearer plate 4, with set screw nut 6, adjustings screw mandrel 5 and dish-shaped above valve casing 1 are locked as to one after setting up water level; On described base P, three way valve 8 is housed, the cypriot valve components C that controls three way valve 8 water inlets is housed in three way valve 8, described cypriot valve components C is connected with template assembly A lower end.
Naturally, other parts that do not relate to sensitive switch B of above-mentioned pressure-sensitive spacing water inlet and water-shortage protection device also can be used as the structure of this pressure-sensitive level-limiting water inlet valve.
Claims (4)
1. pressure-sensitive spacing water inlet and a water-shortage protection device, is characterized in that comprising the template assembly (A) being arranged between the upper valve casing (1) of dish and the lower valve casing (2) of dish,
Described template assembly (A) comprises rubber form (A1), a pair of clamping plate (A2) and guiding push rod (A5), this rubber form (A1) is disc-shaped structure, and in submarginal position, be provided with arcuation ring fold (A11), and this fold (A11) raises up, discoidal clamping plate (A2) are clipped in the upper and lower both sides of rubber form (A1), the diameter of described clamping plate (A2) is less than the diameter of described ring fold (A11), and described rubber form (A1) and clamping plate (A2) thereof are installed on the underpart of guiding push rod (A5); The confined space forming between the lower valve casing (2) of dish and template assembly (A) communicates with heating water boiler water storage cavity by base (P), and between valve casing on dish (1) and rubber form (2), the space of formation is connected with atmosphere.
On the guiding push rod (A5) between rubber form (A1) and the upper valve casing (1) of dish, be set with balance spring 3 and spring bearer plate (4); (5 are screwed in the upper valve casing (1) of dish and to withstand on spring bearer plate (4) upper by top, will regulate screw mandrel (5) and dish-shaped above valve casing (1) to be locked as one after setting up water level with set screw nut (6) to be nested with adjusting screw mandrel on guiding push rod (A5) top; Three way valve (8) is housed on described base (P), in three way valve (8), is equipped with and controls the cypriot valve components of three way valve (8) water inlet (C, described cypriot valve components (C) is connected with template assembly (A) lower end.
Also comprise the sensitive switch (B) of being controlled by above-mentioned guiding push rod (A5).
2. pressure-sensitive spacing water inlet as claimed in claim 1 and water-shortage protection device, is characterized in that described microswitch component (B) comprises sensitive switch (B1), scaffold (B2), tightens screw (3) and tightening nut (B4); Scaffold (B2) is with the locking nut of disjunctor (4) with it, sensitive switch (B1 by scaffold (B2, locking nut (4), tightening nut (B4) be fastened on dish on valve casing (1) to be locked as the adjustable lever (5) of one upper, and the guiding push rod (A5) on template assembly (A) contacts with the reed of switch (B1);
Switch (B1) operating point moves while being set in predetermined excessive low water level protection water level; (41 normal battle is as excessive low water level protection contact for limit switch.
3. pressure-sensitive spacing water inlet as claimed in claim 1 and water-shortage protection device; it is characterized in that described template assembly (A) also comprises clamping fixing body (A4) and mounting nuts (A3); for template (A1) and clamping plate (A2) are tightened to one, and clamping fixing body (A4) is connected with above-mentioned guiding push rod (25) on its axial direction.
4. pressure-sensitive spacing water inlet as claimed in claim 1 and water-shortage protection device, with the disc-shaped structure body of pilot hole, have the loop configuration towards a side projection between the centerand edge of clamping plate (A2) centered by the clamping plate (A2) described in it is characterized in that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310721672.7A CN103672067B (en) | 2013-12-24 | 2013-12-24 | Pressure-sensitive spacing water inlet and water-shortage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310721672.7A CN103672067B (en) | 2013-12-24 | 2013-12-24 | Pressure-sensitive spacing water inlet and water-shortage protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103672067A true CN103672067A (en) | 2014-03-26 |
| CN103672067B CN103672067B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310721672.7A Expired - Fee Related CN103672067B (en) | 2013-12-24 | 2013-12-24 | Pressure-sensitive spacing water inlet and water-shortage protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103672067B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2100537U (en) * | 1991-03-25 | 1992-04-01 | 屈炳华 | Pressure regulating valve of water heater |
| US5186207A (en) * | 1991-08-09 | 1993-02-16 | Kabushiki Kaisha Saginomiya Seisakusho | Small-capacity expansion valve |
| CN2249846Y (en) * | 1996-03-01 | 1997-03-19 | 蔡荣吉 | Water making sensitive switch |
| CN2353970Y (en) * | 1998-08-26 | 1999-12-15 | 王金龙 | Membrane type double-way change-over automatic water-supply valve |
| CN2362057Y (en) * | 1998-12-22 | 2000-02-02 | 戴言忠 | Water level hydraulic automatic switch |
| CN2634223Y (en) * | 2003-07-21 | 2004-08-18 | 宝山钢铁股份有限公司 | Diaphragm type pressure regulating valve |
| CN201225429Y (en) * | 2008-06-27 | 2009-04-22 | 梁应开 | Current stabilizer and switch integrated electric water heater valve body |
| CN101975287A (en) * | 2010-10-15 | 2011-02-16 | 吴相民 | Differential pressure type automatic reversing valve |
| CN102499020A (en) * | 2011-09-30 | 2012-06-20 | 中国农业科学院农田灌溉研究所 | Multilevel distribution type constant pressure irrigation system |
| CN203218149U (en) * | 2013-05-06 | 2013-09-25 | 乐清市东南电子有限公司 | Microswitch |
-
2013
- 2013-12-24 CN CN201310721672.7A patent/CN103672067B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2100537U (en) * | 1991-03-25 | 1992-04-01 | 屈炳华 | Pressure regulating valve of water heater |
| US5186207A (en) * | 1991-08-09 | 1993-02-16 | Kabushiki Kaisha Saginomiya Seisakusho | Small-capacity expansion valve |
| CN2249846Y (en) * | 1996-03-01 | 1997-03-19 | 蔡荣吉 | Water making sensitive switch |
| CN2353970Y (en) * | 1998-08-26 | 1999-12-15 | 王金龙 | Membrane type double-way change-over automatic water-supply valve |
| CN2362057Y (en) * | 1998-12-22 | 2000-02-02 | 戴言忠 | Water level hydraulic automatic switch |
| CN2634223Y (en) * | 2003-07-21 | 2004-08-18 | 宝山钢铁股份有限公司 | Diaphragm type pressure regulating valve |
| CN201225429Y (en) * | 2008-06-27 | 2009-04-22 | 梁应开 | Current stabilizer and switch integrated electric water heater valve body |
| CN101975287A (en) * | 2010-10-15 | 2011-02-16 | 吴相民 | Differential pressure type automatic reversing valve |
| CN102499020A (en) * | 2011-09-30 | 2012-06-20 | 中国农业科学院农田灌溉研究所 | Multilevel distribution type constant pressure irrigation system |
| CN203218149U (en) * | 2013-05-06 | 2013-09-25 | 乐清市东南电子有限公司 | Microswitch |
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| CN103672067B (en) | 2016-03-30 |
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Granted publication date: 20160330 Termination date: 20161224 |