CN203892643U - External pilot relief valve structure - Google Patents

External pilot relief valve structure Download PDF

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Publication number
CN203892643U
CN203892643U CN201420247373.4U CN201420247373U CN203892643U CN 203892643 U CN203892643 U CN 203892643U CN 201420247373 U CN201420247373 U CN 201420247373U CN 203892643 U CN203892643 U CN 203892643U
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CN
China
Prior art keywords
valve
main valve
main
guide sleeve
guide
Prior art date
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Active
Application number
CN201420247373.4U
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Chinese (zh)
Inventor
刘素芳
陈钢
胡赟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Hangyang Koso Pump & Valve Co Ltd
Original Assignee
Hangzhou Hangyang Koso Pump & Valve Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hangzhou Hangyang Koso Pump & Valve Co Ltd filed Critical Hangzhou Hangyang Koso Pump & Valve Co Ltd
Priority to CN201420247373.4U priority Critical patent/CN203892643U/en
Application granted granted Critical
Publication of CN203892643U publication Critical patent/CN203892643U/en
Active legal-status Critical Current
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Abstract

An external pilot relief valve structure is composed by connecting a main valve and a guide valve through a connecting pipe. The main valve comprises a main valve body, a main valve flap component is configured on a valve seat inside the main valve body, and the guide valve is connected to the valve cavity of the main valve body through a first connecting pipe and is connected to the main valve flap component through a second connecting pipe; the upper end portion of the main valve body is in pressure connection with a guide sleeve in the valve cavity through a main valve bonnet, a piston provided with an O-shaped ring and capable of moving in the guide sleeve up and down is arranged in the guide sleeve, and the middle of the piston is connected to the upper end portion of the main valve flap through a piston rod to form the main valve flap component. The external pilot relief valve structure has the advantages of simpleness and convenience in structure, easiness in casting and processing and low cost, valve sealing of the main valve structure is benefited, circulation is more smooth and the like; the external pilot relief valve structure is more suitable for occasions with high requirements on large diameter, high pressure, high sealing performance and the like.

Description

Guide's external safety valve structure
Technical field
The utility model relates to a kind of guide's external safety valve structure, is especially a kind ofly applicable to the safety valve structure that bore is large, pressure is high, sealability requires high occasion, belongs to valve class technical field.
Background technique
For heavy caliber high pressure Pilot operated safety valve, existing guide's built-in safety valve, on the one hand, because guide is built-in, causes main valve body, main valve lid complex structure, and manufacture cost is high; On the other hand, because guide is built-in, main valve clack is positioned at main valve body sealing surface below, and after valve opening, main valve clack has hindered medium circulation, causes valve negotiability to decline.
Model utility content
The purpose of this utility model is to overcome the deficiency of existing guide's built-in safety valve arrangement, and provide a kind of features simple structure, casting, easy processing, cost, the valve seal and the circulation that are conducive to main valve structure are more smooth and easy, and are applicable to guide's external safety valve structure that heavy caliber, high pressure, sealability require high occasion.
The purpose of this utility model completes by following technical solution, it is connected to form by adapter by main valve and pilot valve, described main valve comprises a main valve body, on valve seat in main valve body, dispose a main valve clack assembly, described pilot valve by the first adapter be connected in main valve body valve pocket, by second, take over to connect described main valve clack assembly.
The upper end portion of described main valve body is crimped with a guide sleeve being placed in valve pocket by a main valve lid, in this guide sleeve, be mounted with one that can in guide sleeve, move up and down, with the piston of O type circle, the centre of piston is connected in the upper end portion of described main valve clack and is formed described main valve clack assembly by piston rod.
The top of described main valve body is connected with pilot valve by support, and this pilot valve is connected in described main valve by the second adapter and covers face and be communicated with the piston cavity in guide sleeve; Described pilot valve is connected in described main valve body bottom by the first adapter and is communicated with the valve pocket of main valve clack below.
The utility model belongs to improvements over the prior art, it has features simple structure, casting, easy processing, cost, the valve seal and the circulation feature such as more smooth and easy that are conducive to main valve structure, be particularly useful for heavy caliber, high pressure, sealability and require high occasion.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail: shown in Fig. 1, guide's external safety valve structure described in the utility model, it is connected to form by adapter by main valve 1 and pilot valve 2, described main valve 1 comprises a main valve body 11, on valve seat 12 in main valve body 11, dispose a main valve clack assembly 3, described pilot valve 2 by the first adapter 21 be connected in main valve body 11 valve pocket 13, by second, take over 22 and connect described main valve clack assembly 3.
Shown in figure, the upper end portion of described main valve body 11 is crimped with a guide sleeve 31 being placed in valve pocket by a main valve lid 14, in this guide sleeve 31, be mounted with one that can in guide sleeve, move up and down, with the piston 33 of O type circle 32, the centre of piston 33 is connected in the upper end portion of described main valve clack 35 and is formed described main valve clack assembly 3 by piston rod 34.
The top of described main valve body 11 is connected with pilot valve 2 by support 15, and this pilot valve 2 is connected in described main valve lid 14 above and is communicated with the piston cavity in guide sleeve 31 by the second adapter 22; Described pilot valve 2 is connected in described main valve body 11 bottoms by the first adapter 21 and is communicated with the valve pocket of main valve clack 35 belows.
The utility model is external by pilot valve 2, makes main valve body 11, main valve cover 14 designs simplifications; Casting, easy processing, cost; Pilot valve 2 is external, O type circle 32, piston 33, guide sleeve 31, main valve lid 14 form an airtight piston cavity, gas is taken over 22 and is connected with piston cavity by the first adapter 21, pilot valve 2, second, increase along with system media pressure, the seal pressure that main valve clack 35 obtains also will be along with rising, be that pressure medium is higher, seal more reliable; Pilot valve 2 is external, and main valve clack 35 is positioned at main valve body 11 sealing surface tops, and after main valve clack 35 is opened, this structure is utilized fluid expulsion, circulates more smooth and easy.

Claims (2)

1. guide's external safety valve structure, it is connected to form by adapter by main valve and pilot valve, it is characterized in that described main valve comprises a main valve body, on valve seat in main valve body, dispose a main valve clack assembly, described pilot valve by the first adapter be connected in main valve body valve pocket, by second, take over to connect described main valve clack assembly; The upper end portion of described main valve body is crimped with a guide sleeve being placed in valve pocket by a main valve lid, in this guide sleeve, be mounted with one that can in guide sleeve, move up and down, with the piston of O type circle, the centre of piston is connected in the upper end portion of described main valve clack and is formed described main valve clack assembly by piston rod.
2. guide's external safety valve structure according to claim 1, is characterized in that the top of described main valve body is connected with pilot valve by support, and this pilot valve is connected in described main valve by the second adapter and covers face and be communicated with the piston cavity in guide sleeve; Described pilot valve is connected in described main valve body bottom by the first adapter and is communicated with the valve pocket of main valve clack below.
CN201420247373.4U 2014-05-15 2014-05-15 External pilot relief valve structure Active CN203892643U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420247373.4U CN203892643U (en) 2014-05-15 2014-05-15 External pilot relief valve structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420247373.4U CN203892643U (en) 2014-05-15 2014-05-15 External pilot relief valve structure

Publications (1)

Publication Number Publication Date
CN203892643U true CN203892643U (en) 2014-10-22

Family

ID=51719048

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420247373.4U Active CN203892643U (en) 2014-05-15 2014-05-15 External pilot relief valve structure

Country Status (1)

Country Link
CN (1) CN203892643U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104006191A (en) * 2014-05-15 2014-08-27 杭州杭氧工装泵阀有限公司 Safety valve structure with pilot arranged externally

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104006191A (en) * 2014-05-15 2014-08-27 杭州杭氧工装泵阀有限公司 Safety valve structure with pilot arranged externally

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