CN204253953U - Safety check - Google Patents

Safety check Download PDF

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Publication number
CN204253953U
CN204253953U CN201420713735.4U CN201420713735U CN204253953U CN 204253953 U CN204253953 U CN 204253953U CN 201420713735 U CN201420713735 U CN 201420713735U CN 204253953 U CN204253953 U CN 204253953U
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CN
China
Prior art keywords
valve
valve port
flap
oil cylinder
safety check
Prior art date
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Active
Application number
CN201420713735.4U
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Chinese (zh)
Inventor
杨四云
张明霞
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.)
CHONGQING KETE INDUSTRIAL VALVE Co Ltd
Original Assignee
CHONGQING KETE INDUSTRIAL VALVE Co Ltd
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Filing date
Publication date
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Priority to CN201420713735.4U priority Critical patent/CN204253953U/en
Application granted granted Critical
Publication of CN204253953U publication Critical patent/CN204253953U/en
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Abstract

The utility model provides a kind of safety check, safety check comprise there is multiple valve port and form the valve body of valve pocket and valve gap in inside, valve gap is also provided with and is vertically connected at valve gap and the damping oil cylinder connected with valve pocket, a damping piston is provided with in damping oil cylinder, damping piston be movably connected on one can be reciprocating between valve pocket and damping oil cylinder piston rod one end, damping oil cylinder is communicated with valve pocket by a connecting tube by the other end of damping oil cylinder, valve port place is provided with the flap that supplies sealing first valve port, valve pocket is inner to be provided with Y-piece near the 3rd valve port place, Y-piece is flexibly connected one end of a rocking arm by a bearing pin, the other end of rocking arm is connected on flap and is flexibly connected one end of a connecting rod, the other end of connecting rod is movably connected on the other end of the piston rod being positioned at valve pocket.The utility model can control the time of flap Slow Close well and have preferably sealing.

Description

Safety check
Technical field
The utility model relates to valve technology field, more specifically, particularly relates to a kind of safety check.
Background technique
Safety check (One-way valve): safety check is also known as check valve, one-way valve, one-way valve or check valve, and its effect is the function ensureing medium directional flow in pipeline and unlikely refluence.In addition, the application of safety check is also extensive especially, is applicable to the various occasions such as feedwater, oil, chemical industry.Wherein, in the safety check product turned off for liquid, for automatically shutting down room for promotion certain in addition in the sealing of blocking function, and yet exist and necessarily improve space how realizing technical elements that valve body controls automatically, the very necessary structure to oil body valve is improved further thus, to improve the Performance and quality of safety check.
Model utility content
In view of the above, the purpose of this utility model is to provide a kind of safety check, for solving existing safety check in sealing and some problems of functionally also existing.
For achieving the above object and other relevant objects, the utility model provides following technological scheme:
A kind of safety check, described safety check be included in inside be formed valve pocket and in transversely there is the first valve port of through described valve pocket and the second valve port and the 3rd valve port in longitudinal direction with through described valve pocket valve body and to be covered on described 3rd valve port and the valve gap be connected and fixed with described valve seal, wherein said valve gap is also provided with and is vertically connected at described valve gap and the damping oil cylinder connected with described valve pocket, a damping piston is provided with in described damping oil cylinder, described damping piston be movably connected on one can be reciprocating between valve pocket and damping oil cylinder piston rod one end, described damping oil cylinder is communicated with described valve pocket by a connecting tube by the other end of described damping oil cylinder, described first valve port place is provided with one for the flap sealing described first valve port, described valve pocket is inner to be provided with Y-piece near the 3rd valve port place, described Y-piece is flexibly connected one end of a rocking arm by a bearing pin, the other end of described rocking arm is connected on described flap and is flexibly connected one end of a connecting rod, the other end of described connecting rod is movably connected on the other end of the described piston rod being positioned at valve pocket.
As mentioned above, the utility model has following beneficial effect: the utility model is connected on damping piston by flap by connecting rod and piston rod, and the dielectrically impeded damping piston of damping oil cylinder back cavity is return, that is stoping flap to be closed, these media slowly can only flow into damping oil cylinder by needle type regulating valve; In addition, by regulating the flow of needle-like control valve opening control piston back cavity medium, thus indirectly reach the time controlling flap Slow Close, the utility model also has preferably sealing simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the scheme in the utility model embodiment, be briefly described to describing the required accompanying drawing used in specific embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the overall structure schematic diagram of the utility model safety check.
Fig. 2 is shown as the closedown cooperating structure schematic diagram of the utility model flap and the first valve port.
Drawing reference numeral explanation
1 valve body
10 valve pockets
11 first valve ports
111 along limit
12 second valve ports
13 the 3rd valve ports
2 valve gaps
3 damping oil cylinders
31 connecting tubes
311 needle type regulating valves
32 damping pistons
321 piston rods
4 Y-pieces
41 bearing pins
5 rocking arms
6 flaps
60 protrude
7 connecting rods
8 seal rings
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on embodiment of the present utility model, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, belong to the scope of the utility model protection.
See Fig. 1, show the structural representation of the utility model safety check, described safety check be included in inside be formed valve pocket 10 and in transversely there is the first valve port 11 of through described valve pocket 10 and the second valve port 12 and the 3rd valve port 13 in longitudinal direction with through described valve pocket 10 valve body 1 and to be covered on described 3rd valve port 13 and the valve gap 2 be sealedly connected and fixed with described valve body 1, wherein said valve gap 2 is also provided with and is vertically connected at described valve gap 2 and the damping oil cylinder 3 connected with described valve pocket 10, a damping piston 32 is provided with in described damping oil cylinder 3, described damping piston 32 be movably connected on one can be reciprocating between valve pocket 10 and damping oil cylinder 3 piston rod 321 one end, described damping oil cylinder 3 is communicated with described valve pocket 10 by a connecting tube 31 by the other end of described damping oil cylinder 3, described first valve port 11 place is provided with one for the flap 6 sealing described first valve port 11, described valve pocket 10 is inner is provided with a Y-piece 4 near the 3rd valve port 13 place, described Y-piece 4 is flexibly connected one end of a Rocker arm 5 by a bearing pin 41, the other end of described Rocker arm 5 is connected on described flap 6 and is flexibly connected one end of a connecting rod 7, the other end of described connecting rod 7 is movably connected on the other end of the described piston rod 321 being positioned at valve pocket 10.
Particularly, described connecting tube 31 is also provided with one for the needle type regulating valve 311 of adjust flux, described needle type regulating valve 311 can control the speed of reflux medium, thus reaches the speed degree controlling flap 6 and close.
Further, see Fig. 2, show the closedown cooperating structure schematic diagram of flap 6 and the first valve port 11, from figure, a protrusion 60 is provided with the first valve port 11 edge place of combining at flap 6, correspondingly, be provided with along limit 111 at the edge combined with flap 6 of the first valve port 11, when described flap 6 closes mutually with the first valve port 11, described protrusion 60 and fitting along limit 111, also rabbet at the perimeter of the first valve port 11 simultaneously and have a seal ring 8, when described flap 6 closes mutually with the first valve port 11, described seal ring 8 can fit with described protrusion 60.
Further, the working principle of safety check described in the utility model is: when MEDIA FLOW stops suddenly, due to part deadweight and the thrust of medium of falling of flap 6, flap 6 is closed automatically, reduces water hammer pressure.
To sum up, the utility model is connected on damping piston 32 by flap 6 by connecting rod 7 and piston rod 321, and the dielectrically impeded damping piston 32 of damping oil cylinder 3 back cavity is return, that is stop flap 6 to be closed, these media slowly can only flow into damping oil cylinder 3 by needle type regulating valve 311; In addition, by regulating the flow of needle type regulating valve 311 aperture control piston back cavity medium, thus the time controlling flap 6 Slow Close is indirectly reached.

Claims (4)

1. a safety check, described safety check be included in inside be formed valve pocket (10) and in transversely there is first valve port (11) of through described valve pocket (10) and the second valve port (12) and the 3rd valve port (13) in longitudinal direction with through described valve pocket (10) valve body (1) and be covered in the upper and valve gap (2) be sealedly connected and fixed with described valve body (1) of described 3rd valve port (13), it is characterized in that: described valve gap (2) is also provided with and is vertically connected at described valve gap (2) and the damping oil cylinder (3) connected with described valve pocket (10), a damping piston (32) is provided with in described damping oil cylinder (3), described damping piston (32) be movably connected on one can be reciprocating between valve pocket (10) and damping oil cylinder (3) piston rod (321) one end, described damping oil cylinder (3) is communicated with described valve pocket (10) by a connecting tube (31) by the other end of described damping oil cylinder (3), described first valve port (11) place is provided with one for the flap (6) sealing described first valve port (11), described valve pocket (10) is inner is provided with a Y-piece (4) near the 3rd valve port (13) place, described Y-piece (4) is flexibly connected one end of a rocking arm (5) by a bearing pin (41), the other end of described rocking arm (5) is connected on described flap (6) and is flexibly connected one end of a connecting rod (7), the other end of described connecting rod (7) is movably connected on the other end of the described piston rod (321) being positioned at valve pocket (10).
2. safety check according to claim 1, is characterized in that: described connecting tube (31) is also provided with one for the needle type regulating valve (311) of adjust flux.
3. safety check according to claim 1, it is characterized in that: be provided with a protrusion (60) at flap (6) with the first valve port (11) the edge place of combining, correspondingly, be provided with along limit (111) at the edge combined with flap (6) of the first valve port (11), when described flap (6) and the first valve port (11) are closed mutually, described protrusion (60) and fitting along limit (111).
4. safety check according to claim 3, it is characterized in that: also rabbeting at the perimeter of the first valve port (11) has a seal ring (8), when described flap (6) and the first valve port (11) close mutually, described seal ring (8) can fit with described protrusion (60).
CN201420713735.4U 2014-11-18 2014-11-18 Safety check Active CN204253953U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420713735.4U CN204253953U (en) 2014-11-18 2014-11-18 Safety check

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420713735.4U CN204253953U (en) 2014-11-18 2014-11-18 Safety check

Publications (1)

Publication Number Publication Date
CN204253953U true CN204253953U (en) 2015-04-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420713735.4U Active CN204253953U (en) 2014-11-18 2014-11-18 Safety check

Country Status (1)

Country Link
CN (1) CN204253953U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106481826A (en) * 2015-09-01 2017-03-08 潘正平 Automatically delay open and close valve
CN109356118A (en) * 2018-11-21 2019-02-19 中国电建集团成都勘测设计研究院有限公司 Eulittoral zone keeps off discharge structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106481826A (en) * 2015-09-01 2017-03-08 潘正平 Automatically delay open and close valve
CN106481826B (en) * 2015-09-01 2019-01-22 潘正平 Automatically slow open and close valve
CN109356118A (en) * 2018-11-21 2019-02-19 中国电建集团成都勘测设计研究院有限公司 Eulittoral zone keeps off discharge structure

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