CN204592441U - Safety check - Google Patents

Safety check Download PDF

Info

Publication number
CN204592441U
CN204592441U CN201420739899.4U CN201420739899U CN204592441U CN 204592441 U CN204592441 U CN 204592441U CN 201420739899 U CN201420739899 U CN 201420739899U CN 204592441 U CN204592441 U CN 204592441U
Authority
CN
China
Prior art keywords
valve
seal ring
flap
valve seat
gap
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.)
Expired - Fee Related
Application number
CN201420739899.4U
Other languages
Chinese (zh)
Inventor
王亚军
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.)
DAFENG NANYA VALVE Co Ltd
Original Assignee
DAFENG NANYA 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 DAFENG NANYA VALVE Co Ltd filed Critical DAFENG NANYA VALVE Co Ltd
Priority to CN201420739899.4U priority Critical patent/CN204592441U/en
Application granted granted Critical
Publication of CN204592441U publication Critical patent/CN204592441U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a kind of safety check of good sealing effect, comprise: valve body and valve gap, be connected by screw bolt and nut between described valve body and valve gap, inlet passage and outlet passage is provided with in described valve body, the side of described valve inner inlet passage is provided with valve seat, described valve seat is provided with seal ring, the passage be interconnected with inlet passage is provided with in valve seat, the flap cooperatively interacted with valve seat is provided with in described valve body, the upper end of described flap is connected with valve rod, the upper end of described valve rod is slidably arranged in the chute inside valve gap, spring is provided with in described chute, one end and the valve gap of described spring offset, the other end and the valve rod of described spring offset, flap inside described seal ring is also provided with secondary seal ring, described valve seat is provided with the secondary seal groove cooperatively interacted with secondary seal ring.

Description

Safety check
Technical field
The utility model relates to a kind of valve, particularly relates to a kind of safety check.
Background technique
The pipeline of the industry such as oil, chemical industry all can use safety check, for the cut-out of liquid in pipeline, existing safety check, in use non-return weak effect, the time has been grown and has easily caused non-return failure, and working life is short, simultaneously poor sealing performance between the flap of safety check and valve seat, it is easily aging that time has grown seal ring, causes leak of liquid, can not meet usage requirement well.
Model utility content
Technical problem to be solved in the utility model is: the safety check providing a kind of good sealing effect.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: safety check, comprise: valve body and valve gap, be connected by screw bolt and nut between described valve body and valve gap, inlet passage and outlet passage is provided with in described valve body, the side of described valve inner inlet passage is provided with valve seat, described valve seat is provided with seal ring, the passage be interconnected with inlet passage is provided with in valve seat, the flap cooperatively interacted with valve seat is provided with in described valve body, the upper end of described flap is connected with valve rod, the upper end of described valve rod is slidably arranged in the chute inside valve gap, spring is provided with in described chute, one end and the valve gap of described spring offset, the other end and the valve rod of described spring offset, flap inside described seal ring is also provided with secondary seal ring, described valve seat is provided with the secondary seal groove cooperatively interacted with secondary seal ring.
The utility model has the advantages that: above-mentioned safety check is arranged on pipeline, during normal use, it can play check function well, use convenient, non-return is effective, long service life, carries out secondary seal by secondary seal ring and secondary seal groove between flap and valve seat simultaneously, can prevent the aging leak of liquid caused of seal ring, good sealing effect, can meet usage requirement well.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model safety check.
In figure: 1, valve body, 2, valve gap, 3, bolt, 4, nut, 5, inlet passage, 6, outlet passage, 7, valve seat, 8, seal ring, 9, passage, 10, flap, 11, valve rod, 12, chute, 13, spring, 14, secondary seal ring, 15, secondary seal groove.
Embodiment
Particular content of the present utility model is described in detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, safety check, comprise: valve body 1 and valve gap 2, be connected with nut 4 by bolt 3 between described valve body 1 and valve gap 2, inlet passage 5 and outlet passage 6 is provided with in described valve body 1, the side of the inner inlet passage 6 of described valve body 1 is provided with valve seat 7, described valve seat 7 is provided with seal ring 8, the passage 9 be interconnected with inlet passage 5 is provided with in valve seat 7, the flap 10 cooperatively interacted with valve seat 7 is provided with in described valve body 1, the upper end of described flap 10 is connected with valve rod 11, the upper end of described valve rod 11 is slidably arranged in the chute 12 inside valve gap 2, spring 13 is provided with in described chute 12, one end and the valve gap 2 of described spring 13 offset, the other end and the valve rod 11 of described spring 13 offset, flap 10 inside described seal ring 8 is also provided with secondary seal ring 14, described valve seat 7 is provided with the secondary seal groove 15 cooperatively interacted with secondary seal ring 14.
When above-mentioned safety check is arranged on and pipeline plays check function, liquid medium is by inlet passage 5, passage 9 is pushed flap 10 open and is then entered outlet passage 6, in the process that fluid passes through, flap 10 is boosted, flap 10 promotes valve rod 11 upward sliding in chute 12, the upper end Compress Spring 13 of valve rod 11, when the flow of liquid medium is constant, spring 13 keeps compressive state, flap 10 is opened, when there is no liquid medium process or liquid medium backflow, spring 13 automatically opens promotion valve rod 11 and moves downward until make flap 10 close, flap 10 and the seal ring 8 be arranged on valve seat 7 offset, the secondary seal ring 14 be arranged on the flap 10 inside seal ring 8 is inserted in secondary seal groove 15 and plays secondary seal effect, good sealing effect, check function can be played well when above-mentioned safety check normally uses.
Above-mentioned safety check is arranged on pipeline, during normal use, it can play check function well, use convenient, non-return is effective, long service life, carries out secondary seal by secondary seal ring and secondary seal groove between flap and valve seat simultaneously, can prevent the aging leak of liquid caused of seal ring, good sealing effect, can meet usage requirement well.

Claims (1)

1. safety check, it is characterized in that: comprising: valve body (1) and valve gap (2), be connected with nut (4) by bolt (3) between described valve body (1) and valve gap (2), inlet passage (5) and outlet passage (6) is provided with in described valve body (1), the side of described valve body (1) inner inlet passage (6) is provided with valve seat (7), described valve seat (7) is provided with seal ring (8), the passage (9) be interconnected with inlet passage (5) is provided with in valve seat (7), the flap (10) cooperatively interacted with valve seat (7) is provided with in described valve body (1), the upper end of described flap (10) is connected with valve rod (11), the upper end of described valve rod (11) is slidably arranged in the chute (12) of valve gap (2) inner side, spring (13) is provided with in described chute (12), one end and the valve gap (2) of described spring (13) offset, the other end and the valve rod (11) of described spring (13) offset, the flap (10) of described seal ring (8) inner side is also provided with secondary seal ring (14), described valve seat (7) is provided with the secondary seal groove (15) cooperatively interacted with secondary seal ring (14).
CN201420739899.4U 2014-11-28 2014-11-28 Safety check Expired - Fee Related CN204592441U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420739899.4U CN204592441U (en) 2014-11-28 2014-11-28 Safety check

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420739899.4U CN204592441U (en) 2014-11-28 2014-11-28 Safety check

Publications (1)

Publication Number Publication Date
CN204592441U true CN204592441U (en) 2015-08-26

Family

ID=53928593

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420739899.4U Expired - Fee Related CN204592441U (en) 2014-11-28 2014-11-28 Safety check

Country Status (1)

Country Link
CN (1) CN204592441U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106051233A (en) * 2016-08-22 2016-10-26 江苏金晟元特种阀门股份有限公司 Check valve special for ammonia gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106051233A (en) * 2016-08-22 2016-10-26 江苏金晟元特种阀门股份有限公司 Check valve special for ammonia gas

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150826

Termination date: 20151128