CN109084034B - Split type double-valve-clack regulating valve and application method thereof - Google Patents
Split type double-valve-clack regulating valve and application method thereof Download PDFInfo
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- CN109084034B CN109084034B CN201811303115.2A CN201811303115A CN109084034B CN 109084034 B CN109084034 B CN 109084034B CN 201811303115 A CN201811303115 A CN 201811303115A CN 109084034 B CN109084034 B CN 109084034B
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- valve
- sealing surface
- clack
- adjusting
- lower valve
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
Abstract
The invention relates to a split type double-valve-clack regulating valve and a use method thereof, wherein the use method comprises the following steps: 1. firstly, performing a sealing test, introducing a test medium from an inlet channel when the valve is in a closed state, and observing whether the outlet channel leaks or not; 2. if no seal is formed between the sealing surface of the lower valve clack and the sealing surface of the lower valve seat, the locking device is loosened, the adjusting sleeve is rotated clockwise to drive the adjusting rod to rotate clockwise, the lower valve rod and the lower valve clack are controlled to move downwards until the sealing surface of the lower valve clack and the sealing surface of the lower valve seat form a seal, and the adjusting sleeve is locked by the locking device; 3. if no seal is formed between the upper valve clack sealing surface and the upper valve seat sealing surface, loosening the locking device, rotating the adjusting sleeve anticlockwise, controlling the upper valve clack to move downwards until the upper valve clack sealing surface and the upper valve seat sealing surface form a seal, and locking the adjusting sleeve by using the locking device; 4. the qualified valve of will testing install on the pipeline can, have the advantage that adjust convenient, the regulation precision is high.
Description
Technical Field
The invention relates to a regulating valve, in particular to a use method of a split type double-valve-clack regulating valve.
Background
The double seat formula governing valve mainly includes: the valve body is internally provided with an inlet channel and an outlet channel, the inlet channel is transversely arranged, the outlet channel is arranged in a transverse Y-shaped structure, a cavity wall with a transverse U-shaped structure is arranged between the inlet channel and the outlet channel, the upper valve seat is arranged at the upper part of the cavity wall, the lower valve seat is arranged at the lower part of the cavity wall, the upper ends of the upper valve seat and the lower valve seat are respectively provided with an upper valve seat sealing surface and a lower valve seat sealing surface, the upper valve clack and the lower valve clack are fixed at the lower part of the valve rod in a series connection manner, a lower valve rod is arranged between the upper valve clack and the lower valve clack, the upper valve clack is arranged at the upper part of the outlet channel, the lower valve clack is arranged at the, can control the distance between the upper and lower valve clack sealing surface and the upper and lower valve seat sealing surface respectively to play the effect of governing valve outlet pressure, flow, its shortcoming lies in: because the influence in aspects such as machining error, assembly, when moving the upper valve rod, the distance between the sealed face of upper valve clack and the sealed face of upper valve seat can't be unanimous with the distance between the sealed face of lower valve clack and the sealed face of lower valve seat, when needs close this valve, can't reach full seal state, lets out leakage quantity big, goes up the fixed setting between valve clack and the lower valve clack simultaneously, has the technical defect that processing is difficult, with high costs.
Disclosure of Invention
Aiming at the technical defects in the prior art, the invention provides the split type double-valve-clack regulating valve which is good in use sealing performance, stable in regulation and good in vibration resistance and the use method thereof.
The invention is realized by the following technical scheme:
this split type bivalve lamella governing valve includes: the valve comprises a valve body, an upper valve seat, a lower valve seat, an upper valve clack, a lower valve clack, a valve cover, an upper valve rod, a support and a driving device, wherein an inlet channel and an outlet channel are arranged in the valve body, the inlet channel is transversely arranged, the outlet channel is arranged in a transverse Y-shaped structure, a cavity wall in a transverse U-shaped structure is arranged between the inlet channel and the outlet channel, the upper valve seat is arranged at the upper part of the cavity wall, the lower valve seat is arranged at the lower part of the cavity wall, the upper end of the upper valve seat and the upper end of the lower valve seat are respectively provided with an upper valve seat sealing surface and a lower valve seat sealing surface, the upper valve clack and the lower valve clack are arranged below the upper valve rod in a series connection manner, the lower valve rod is arranged between the upper valve clack and the lower valve clack, the lower end of the lower valve rod is fixedly connected with the lower valve clack, gland compresses tightly the filler downwards, and support lower extreme fixed mounting is on valve gap upper portion, and drive arrangement installs on support upper portion, goes up the valve stem upper end and upwards pierces through in valve gap, recess and the support stretches into drive arrangement, its characterized in that: the valve also comprises a vertically arranged adjusting rod, the upper end of the adjusting rod penetrates through the lower valve clack and the lower valve rod upwards and then extends into the upper valve clack, the upper end of the adjusting rod is provided with a limiting block for limiting the adjusting rod to move relative to the upper valve clack, the upper end of the adjusting rod is also provided with an adjusting external thread, the inner part of the upper valve clack is also provided with a lifting nozzle and an anti-rotation groove, the upper part of the lifting nozzle is provided with an adjusting internal thread matched with the adjusting external thread, the outer part of the lifting nozzle is provided with an anti-rotation shin extending into the anti-rotation groove, the inner part of the lifting nozzle is provided with a hook-shaped groove, a lifting block with a plate type structure is arranged in the hook-shaped groove, the lower valve rod extends upwards into the upper valve clack and is fixedly connected with the lifting block, the lower end of the adjusting rod extends downwards out of the valve body, this locking device can prevent that the adjusting collar from rotatory, be equipped with the uide bushing between valve body and the valve gap, the uide bushing inside is equipped with vertical through-hole, goes up valve lamella upper portion and is equipped with the guide bar that forms upper and lower direction with this through-hole, guide bar upper end and last valve rod lower extreme fixed connection, the guide bar excircle still is equipped with the wear-resisting carbide of one deck, and this wear-resisting carbide adopts the mode of build-up welding to fix at the guide bar excircle, the through-hole surface is equipped with the recess that blocks water.
The use method of the split type double-valve-clack regulating valve comprises the following steps:
1. firstly, performing a sealing test, introducing a test medium from an inlet channel when the valve is in a closed state, and observing whether the outlet channel leaks or not;
2. observing that if a seal is formed between the upper valve clack sealing surface and the upper valve seat sealing surface and a seal is not formed between the lower valve clack sealing surface and the lower valve seat sealing surface, loosening the locking device, clockwise rotating the adjusting sleeve to drive the adjusting rod to clockwise rotate, driving the lower valve rod and the lower valve clack to downwards move under the matching of the adjusting external thread and the adjusting internal thread until the lower valve clack sealing surface and the lower valve seat sealing surface form a seal, and locking the adjusting sleeve by using the locking device;
3. observing that if a seal is formed between the lower valve clack sealing surface and the lower valve seat sealing surface and a seal is not formed between the upper valve clack sealing surface and the upper valve seat sealing surface, loosening the locking device, rotating the adjusting sleeve anticlockwise to drive the adjusting rod to rotate anticlockwise, moving the upper valve clack downwards under the matching of the adjusting external thread and the adjusting internal thread until the upper valve clack sealing surface and the upper valve seat sealing surface form a seal, and locking the adjusting sleeve by using the locking device;
4. and (3) installing the valve qualified in the test on a pipeline, and adjusting the distance between the sealing surface of the upper valve clack and the sealing surface of the lower valve clack and the sealing surface of the upper valve seat and the sealing surface of the lower valve seat respectively by using a driving device to realize pressure or flow adjustment.
The invention has the advantages that: the arrangement of the adjusting rod ensures that the distance between the upper valve clack sealing surface and the upper valve seat sealing surface is consistent with the distance between the lower valve clack sealing surface and the lower valve seat sealing surface when the valve is opened and closed, and the valve has the advantage of good sealing performance; meanwhile, the processing is convenient and the cost is low; the guide sleeve has the advantage of good vibration resistance, and the assembly method has the advantages of simplicity, rapidness and high assembly qualified rate; the using method has the advantages of convenience in adjustment and high adjustment precision.
Drawings
Fig. 1 is a schematic structural diagram of a split type double-valve-flap regulating valve of the present invention.
Detailed Description
As can be seen from fig. 1, the split type dual-valve flap regulating valve includes: the valve comprises a valve body 1, an upper valve seat 6, a lower valve seat 2, an upper valve flap 7, a lower valve flap 3, a valve cover 11, an upper valve rod 12, a support 15 and a driving device 16, wherein an inlet channel and an outlet channel are arranged inside the valve body 1, the inlet channel is transversely arranged, the outlet channel is arranged in a transverse Y-shaped structure, a cavity wall with a transverse U-shaped structure is arranged between the inlet channel and the outlet channel, the upper valve seat 6 is arranged at the upper part of the cavity wall, the lower valve seat 2 is arranged at the lower part of the cavity wall, the upper ends of the upper valve seat 6 and the lower valve seat 2 are respectively provided with an upper valve seat sealing surface and a lower valve seat sealing surface, the upper valve flap 7 and the lower valve flap 3 are arranged below the upper valve rod 12 in a series connection manner, the lower valve rod 4 is arranged between the upper valve flap 7 and the lower valve flap 3, the lower valve flap 7 is arranged at the upper part of the outlet channel, the, the valve cover 11 is arranged at the upper end of the valve body 1, the upper end of the valve cover 11 is provided with a groove, the groove is internally provided with packing 13, the upper part of the groove is also provided with a gland 14, the gland 14 downwards compresses the packing 13, the lower end of a bracket 15 is fixedly arranged at the upper part of the valve cover 11, a driving device 16 is arranged at the upper part of the bracket 15, the upper end of an upper valve rod 12 upwards penetrates through the valve cover 11, the groove and the bracket 15 and extends into the driving device 16, the valve also comprises a vertically arranged adjusting rod 5, the upper end of the adjusting rod 5 upwards penetrates through a lower valve clack 3 and a lower valve rod 4 and then extends into an upper valve clack 7, the upper end of the adjusting rod 5 is provided with a limiting block for limiting the adjusting rod 5 to move relative to the upper valve clack 7, the upper end of the adjusting rod 5 is also provided with an adjusting external thread, the upper part, a hook-shaped groove is arranged in the lifting nozzle 9, a lifting block 8 with a plate structure is arranged in the hook-shaped groove, the lower valve rod 4 extends upwards into the upper valve clack 7 and is fixedly connected with the lifting block 8, the lower end of the adjusting rod 5 extends downwards out of the valve body 1, a vertical clamping groove is arranged at the lower end of the adjusting rod 5, an adjusting sleeve 18 and a cross pin 19 are arranged below the valve body 1, the cross pin 19 transversely penetrates through the vertical clamping groove and then is connected with the adjusting sleeve 18, the adjusting rod 5 can be driven to rotate by rotating the adjusting sleeve 18, a locking device 17 is also arranged on the outer side of the lower part of the valve body 1, the locking device 17 can prevent the adjusting sleeve 18 from rotating, a rubber sealing ring is arranged between the outer circle of the adjusting rod 5 and the lower valve clack 3, a guide sleeve 10 is arranged between the valve body 1 and the valve cover 11, a vertical through hole is arranged in the guide sleeve 10, a guide, the guide bar excircle still is equipped with the wear-resisting carbide of one deck, and this wear-resisting carbide adopts the mode of build-up welding to fix at the guide bar excircle, the through-hole surface is equipped with the recess that blocks water.
The use method of the split type double-valve-clack regulating valve comprises the following steps:
1. firstly, performing a sealing test, introducing a test medium from an inlet channel when the valve is in a closed state, and observing whether the outlet channel leaks or not;
2. observing that if a seal is formed between the upper valve clack sealing surface and the upper valve seat sealing surface and a seal is not formed between the lower valve clack sealing surface and the lower valve seat sealing surface, loosening the locking device 17, clockwise rotating the adjusting sleeve 18 to drive the adjusting rod 5 to clockwise rotate, driving the lifting block 8 to move downwards by the lifting nozzle 9 under the matching of the adjusting external thread and the adjusting internal thread, simultaneously driving the lower valve rod 4 and the lower valve clack 3 to move downwards until the lower valve clack sealing surface and the lower valve seat sealing surface form a seal, and locking the adjusting sleeve 18 by the locking device 17;
3. observing that if a seal is formed between the lower valve clack sealing surface and the lower valve seat sealing surface and a seal is not formed between the upper valve clack sealing surface and the upper valve seat sealing surface, loosening the locking device, rotating the adjusting sleeve anticlockwise to drive the adjusting rod to rotate anticlockwise, moving the upper valve clack downwards under the matching of the adjusting external thread and the adjusting internal thread until the upper valve clack sealing surface and the upper valve seat sealing surface form a seal, and locking the adjusting sleeve by using the locking device;
4. and (3) installing the valve qualified in the test on a pipeline, and adjusting the distance between the sealing surface of the upper valve clack and the sealing surface of the lower valve clack and the sealing surface of the upper valve seat and the sealing surface of the lower valve seat respectively by using a driving device to realize pressure or flow adjustment.
At the moment, when the driving device drives the upper valve rod to move up and down in the using process of the valve, the distance between the upper valve clack sealing surface and the upper valve seat sealing surface is consistent with the distance between the lower valve clack sealing surface and the lower valve seat sealing surface.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A split, dual-spool regulator valve comprising: the valve comprises a valve body, an upper valve seat, a lower valve seat, an upper valve clack, a lower valve clack, a valve cover, an upper valve rod, a support and a driving device, wherein an inlet channel and an outlet channel are arranged in the valve body, the inlet channel is transversely arranged, the outlet channel is arranged in a transverse Y-shaped structure, a cavity wall in a transverse U-shaped structure is arranged between the inlet channel and the outlet channel, the upper valve seat is arranged at the upper part of the cavity wall, the lower valve seat is arranged at the lower part of the cavity wall, the upper end of the upper valve seat and the upper end of the lower valve seat are respectively provided with an upper valve seat sealing surface and a lower valve seat sealing surface, the upper valve clack and the lower valve clack are arranged below the upper valve rod in a series connection manner, the lower valve rod is arranged between the upper valve clack and the lower valve clack, the lower end of the lower valve rod is fixedly connected with the lower valve clack, gland compresses tightly the filler downwards, and support lower extreme fixed mounting is on valve gap upper portion, and drive arrangement installs on support upper portion, goes up the valve stem upper end and upwards pierces through in valve gap, recess and the support stretches into drive arrangement, its characterized in that: the valve also comprises a vertically arranged adjusting rod, the upper end of the adjusting rod penetrates through the lower valve clack and the lower valve rod upwards and then extends into the upper valve clack, the upper end of the adjusting rod is provided with a limiting block for limiting the adjusting rod to move relative to the upper valve clack, the upper end of the adjusting rod is also provided with an adjusting external thread, the inner part of the upper valve clack is also provided with a lifting nozzle and an anti-rotation groove, the upper part of the lifting nozzle is provided with an adjusting internal thread matched with the adjusting external thread, the outer part of the lifting nozzle is provided with an anti-rotation shin extending into the anti-rotation groove, the inner part of the lifting nozzle is provided with a hook-shaped groove, a lifting block with a plate type structure is arranged in the hook-shaped groove, the lower valve rod extends upwards into the upper valve clack and is fixedly connected with the lifting block, the lower end of the adjusting rod extends downwards out of the valve body, this locking device can prevent that the adjusting collar from rotatory, be equipped with the uide bushing between valve body and the valve gap, the uide bushing inside is equipped with vertical through-hole, goes up valve lamella upper portion and is equipped with the guide bar that forms upper and lower direction with this through-hole, guide bar upper end and last valve rod lower extreme fixed connection, the guide bar excircle still is equipped with the wear-resisting carbide of one deck, and this wear-resisting carbide adopts the mode of build-up welding to fix at the guide bar excircle, the through-hole surface is equipped with the recess that blocks water.
2. The use method of the split double-valve-clack regulating valve as claimed in claim 1, comprises the following steps:
1) firstly, carrying out a sealing test, introducing a test medium from the inlet channel when the valve is in a closed state, and observing whether the outlet channel leaks or not;
2) observing, if a seal is formed between the upper valve clack sealing surface and the upper valve seat sealing surface and a seal is not formed between the lower valve clack sealing surface and the lower valve seat sealing surface, loosening the locking device, clockwise rotating the adjusting sleeve to drive the adjusting rod to clockwise rotate, driving the lower valve rod and the lower valve clack to downwards move under the matching of the adjusting external thread and the adjusting internal thread until the lower valve clack sealing surface and the lower valve seat sealing surface form a seal, and locking the adjusting sleeve by using the locking device;
3) observing, if a seal is formed between the lower valve clack sealing surface and the lower valve seat sealing surface and a seal is not formed between the upper valve clack sealing surface and the upper valve seat sealing surface, loosening the locking device, rotating the adjusting sleeve anticlockwise to drive the adjusting rod to rotate anticlockwise, moving the upper valve clack downwards under the matching of the adjusting external thread and the adjusting internal thread until the upper valve clack sealing surface and the upper valve seat sealing surface form a seal, and locking the adjusting sleeve by using the locking device;
4) and installing the valve qualified in the test on the pipeline, and adjusting the distance between the sealing surface of the upper valve clack and the sealing surface of the lower valve clack and the sealing surface of the upper valve seat and the sealing surface of the lower valve seat respectively by using the driving device to realize pressure or flow adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303115.2A CN109084034B (en) | 2018-11-02 | 2018-11-02 | Split type double-valve-clack regulating valve and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303115.2A CN109084034B (en) | 2018-11-02 | 2018-11-02 | Split type double-valve-clack regulating valve and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109084034A CN109084034A (en) | 2018-12-25 |
| CN109084034B true CN109084034B (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811303115.2A Active CN109084034B (en) | 2018-11-02 | 2018-11-02 | Split type double-valve-clack regulating valve and application method thereof |
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| CN (1) | CN109084034B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE330210C (en) * | 1917-02-15 | 1920-12-10 | Cockburns Ltd | |
| GB323996A (en) * | 1929-05-16 | 1930-01-16 | Cockburns Ltd | Improvements in stop valves |
| US3012583A (en) * | 1960-07-25 | 1961-12-12 | Manning Maxwell & Moore Inc | Double-seated valve for high temperature work |
| JPS5530546A (en) * | 1978-08-23 | 1980-03-04 | Hitachi Ltd | Proportional solenoid valve |
| CN2095978U (en) * | 1991-06-22 | 1992-02-12 | 龚锦 | Automatic pressure head limited valve |
| CN2641393Y (en) * | 2003-09-18 | 2004-09-15 | 张晓佳 | Cone core type shutoff valve |
| CN201173298Y (en) * | 2008-04-03 | 2008-12-31 | 鞍山电磁阀有限责任公司 | Straight moving type double-way electromagnetic valve |
| CN101551021A (en) * | 2008-04-03 | 2009-10-07 | 鞍山电磁阀有限责任公司 | Direct-acting type two-way solenoid valve |
-
2018
- 2018-11-02 CN CN201811303115.2A patent/CN109084034B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE330210C (en) * | 1917-02-15 | 1920-12-10 | Cockburns Ltd | |
| GB323996A (en) * | 1929-05-16 | 1930-01-16 | Cockburns Ltd | Improvements in stop valves |
| US3012583A (en) * | 1960-07-25 | 1961-12-12 | Manning Maxwell & Moore Inc | Double-seated valve for high temperature work |
| JPS5530546A (en) * | 1978-08-23 | 1980-03-04 | Hitachi Ltd | Proportional solenoid valve |
| CN2095978U (en) * | 1991-06-22 | 1992-02-12 | 龚锦 | Automatic pressure head limited valve |
| CN2641393Y (en) * | 2003-09-18 | 2004-09-15 | 张晓佳 | Cone core type shutoff valve |
| CN201173298Y (en) * | 2008-04-03 | 2008-12-31 | 鞍山电磁阀有限责任公司 | Straight moving type double-way electromagnetic valve |
| CN101551021A (en) * | 2008-04-03 | 2009-10-07 | 鞍山电磁阀有限责任公司 | Direct-acting type two-way solenoid valve |
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| Publication number | Publication date |
|---|---|
| CN109084034A (en) | 2018-12-25 |
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Effective date of registration: 20200506 Address after: Dong'ou Industrial Park, Oubei Town, Yongjia County, Wenzhou City, Zhejiang province 325105 Applicant after: Zhejiang Ruixin automatic control instrument Co., Ltd Address before: 325115, Zhejiang, Wenzhou province Yongjia County town of rock head carp Creek Village Applicant before: Li Qiong |
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