CN204042083U - A kind of slow closing device of Swing check valve - Google Patents
A kind of slow closing device of Swing check valve Download PDFInfo
- Publication number
- CN204042083U CN204042083U CN201420468915.0U CN201420468915U CN204042083U CN 204042083 U CN204042083 U CN 204042083U CN 201420468915 U CN201420468915 U CN 201420468915U CN 204042083 U CN204042083 U CN 204042083U
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- piston
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- piston rod
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Abstract
The utility model relates to a kind of slow closing device of Swing check valve, comprise cylinder body, left cylinder cap, right cylinder cap, piston, piston rod, mainly the right-hand member of piston rod is fixedly connected with by the axis hole of axial flat key with safety check flap, the left end of piston rod is shaped with hexagonal release handle, the middle part of piston rod is shaped with screw thread, piston cooperatively interacts with the screw thread on piston rod and is connected, between left cylinder cap and right cylinder cap interior edge face, fixedly mount guide rod, piston is shaped with the pilot hole coordinated with guide rod motive sealing; Cylinder body is shaped with the through hole being communicated with piston left hand piston chamber, the through hole on this cylinder body is communicated with the radial direction through hole on right cylinder cap by one-way throttle valve; Inside left cylinder cap be shaped with the looping pit be communicated with its radial direction through hole between piston rod, piston left side connecting cylinder ring, the periphery of this cylinder ring coordinates with the inner hole wall motive sealing of looping pit.There is the features such as structure is simple, the Slow Close time is adjustable.Be applicable to the slow closing device of water turbine, exit of pump safety check.
Description
Technical field
The utility model belongs to valve hydraulic control field, particularly about the hydraulic control slow closing device opening formula safety check.The utility model is applicable to the slow closing device of water turbine, exit of pump safety check.
Background technique
Generally safety check is installed at water turbine, exit of pump, pipeline medium refluence damage equipment when shutting down to prevent water turbine, water pump.The check valve structure that Swing check valve is water turbine, water pump system more generally adopts.But common Swing check valve can produce larger water hammer when closing, larger potential safety hazard is existed to system equipment.Problem of water hammer is closed for Swing check valve, general employing arranges quick closing valve slow closing device on the basis of safety check, if the patent No. is the rotary-open type check valve of CN201120381818, there is valve body, valve gap, valve seat, valve shaft, flap, oil hydraulic cylinder is connected with above valve gap, there is pore cylinder body upper end, piston rod inserts in valve body from valve gap and is hinged with one section of short connecting rod between flap, the side of hydraulic cylinder hypomere, on having, lower two import and export, upper import and export are connected with inside the import of valve body with pipeline by upper modulating valve, lower import and export are connected with inside the outlet of valve body with pipeline by lower modulating valve.During valve opening, the resistance of flowing medium by valve can be reduced, during valve closing, avoid producing water hammer.But, the shortcoming such as the slow closing device ubiquity complex structure of the buffer valve of existing various structural type, Slow Close time are unadjustable.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, provides that a kind of structure is simple, the slow closing device of Slow Close time adjustable Swing check valve.
The technical solution of the utility model comprises cylinder body, left cylinder cap, right cylinder cap, piston, piston rod, left cylinder cap and right cylinder cap seal the two ends, left and right being fixedly mounted on cylinder body respectively, outside piston face coordinates with the motive sealing of cylinder body inner round wall, the center hole of left cylinder cap and right cylinder cap coordinates with piston rod motive sealing, left cylinder cap is shaped with on the cylindrical wall of right cylinder cap the radial direction through hole being communicated with piston two ends piston cavity respectively, radial direction through hole on radial direction through hole on left cylinder cap and right cylinder cap is interconnected by pipeline, and cylinder body is provided with the connecting base be fixedly connected with check valve body; Mainly the right-hand member of piston rod is fixedly connected with by the axis hole of axial flat key with safety check flap, the left end of piston rod is shaped with hexagonal release handle, the middle part of piston rod is shaped with screw thread, piston cooperatively interacts with the screw thread on piston rod and is connected, between left cylinder cap and right cylinder cap interior edge face, fixedly mount guide rod, piston is shaped with the pilot hole coordinated with guide rod motive sealing; Cylinder body is shaped with the through hole being communicated with piston left hand piston chamber, the through hole on this cylinder body is communicated with the radial direction through hole on right cylinder cap by one-way throttle valve; Inside left cylinder cap be shaped with the looping pit be communicated with its radial direction through hole between piston rod, piston left side connecting cylinder ring, the periphery of this cylinder ring coordinates with the inner hole wall motive sealing of looping pit.
In above technological scheme, one-way throttle valve is composed in parallel by throttle valve and one-way valve, and the positive flow port of one-way valve is communicated with the radial direction through hole of right cylinder cap.
Open soon and quick closing valve passage by forming connecting tube between the radial direction through hole that the utility model has the advantages that left cylinder cap and right cylinder cap, through hole on cylinder body is consisted of the radial direction through hole on one-way throttle valve and right cylinder cap opens gentle closed walk soon, the cylinder ring of piston left side coordinates with looping pit and forms quick closing valve and Slow Close throw over switch, piston coordinates Slow Close Timing with piston rod thread, has the features such as structure is simple, the Slow Close time is adjustable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
The slow closing device of Swing check valve as shown in Figure 1, comprise cylinder body 1, left cylinder cap 2, right cylinder cap 5, piston 4, piston rod 3, left cylinder cap 2 and right cylinder cap 5 seal the two ends, left and right being fixedly mounted on cylinder body 1 respectively, piston 4 periphery coordinates with the motive sealing of cylinder body 1 inner round wall, the center hole of left cylinder cap 2 and right cylinder cap 5 coordinates with piston rod 3 motive sealing, left cylinder cap 2 is shaped with on the cylindrical wall of right cylinder cap 5 radial direction through hole being communicated with piston 4 two ends piston cavity respectively, radial direction through hole on left cylinder cap 2 and the radial direction through hole on right cylinder cap 5 are interconnected by pipeline, form and open soon and quick closing valve passage, cylinder body 1 is provided with the connecting base be fixedly connected with check valve body, the right-hand member of piston rod 3 is fixedly connected with by the axis hole of axial flat key with safety check flap, flap drives piston rod 3 to rotate when opening or close, the left end of piston rod 3 is shaped with hexagonal release handle, the middle part of piston rod 3 is shaped with screw thread, piston 4 cooperatively interacts with the screw thread on piston rod 3 and is connected, between left cylinder cap 2 and right cylinder cap 5 interior edge face, fixedly mount guide rod 6, piston 4 is shaped with the pilot hole coordinated with guide rod 6 motive sealing, the rotation of piston rod 3 is converted to the axial translation of piston 4, cylinder body 1 is shaped with the through hole being communicated with piston 4 left hand piston chamber, through hole on this cylinder body 1 is communicated with the radial direction through hole on right cylinder cap 5 by one-way throttle valve, form and open gentle closed walk soon, namely when flap is opened, the piston cavity of piston 4 left and right side two is without throttling conducting, when flap is closed, the piston cavity of piston 4 left and right side two is by throttle valve 7 conducting, inside left cylinder cap 2 be shaped with the looping pit 10 be communicated with its radial direction through hole between piston rod 3, namely left cylinder cap 2 be shaped with the annular pass being communicated with radial direction through hole on piston 4 left hand piston chamber and left cylinder cap 2 between piston rod 3, piston 4 left side connecting cylinder ring 9, the periphery of this cylinder ring 9 coordinates with the inner hole wall motive sealing of looping pit 10.By the distance between piston rod 3 left end hexagonal release handle adjustment piston 4 and left cylinder cap 2, regulate the Slow Close time.Between piston rod 3 with left cylinder cap 2, axial restraint is connected, limited piston bar 3 and the axial relative movement of left cylinder cap 2.
One-way throttle valve is composed in parallel by throttle valve 7 and one-way valve 8, the positive flow port of one-way valve 8 is communicated with the radial direction through hole of right cylinder cap 5, namely one-way valve 8 is from piston 4 right hand piston chamber to the conducting of left hand piston cavity direction, and ends from piston 4 left hand piston chamber to right hand piston cavity direction.
Working procedure: when flap is opened, piston rod 3 rotates and piston 4 is moved in cylinder cap 5 direction to the right, and piston 4 right hand piston cylinder liquid flows to left hand piston cylinder by the passage between right cylinder cap 5 and left cylinder cap 2 and one-way valve 8, realizes quick valve opening; When flap is closed, piston rod 3 rotates and piston 4 is moved in cylinder cap 2 direction left, and piston 4 left hand piston cylinder liquid flows to the right hand piston chamber of piston 4 by the passage between left cylinder cap 2 and right cylinder cap 5 and throttle valve 7, realize quick closedown; When piston 4 be moved to the left to the cylinder ring 9 of its left end is coordinated with looping pit 10 motive sealing of left cylinder cap 2 time, passage between left cylinder cap 2 and right cylinder cap 5 is by shutoff, the liquid in piston 4 left hand piston chamber slowly flows to right piston cavity by throttle valve 7, realizes buffer valve.
Claims (2)
1. the slow closing device of a Swing check valve, comprise cylinder body (1), left cylinder cap (2), right cylinder cap (5), piston (4), piston rod (3), left cylinder cap (2) and right cylinder cap (5) seal the two ends, left and right being fixedly mounted on cylinder body (1) respectively, piston (4) periphery coordinates with cylinder body (1) inner round wall motive sealing, the center hole of left cylinder cap (2) and right cylinder cap (5) coordinates with piston rod (3) motive sealing, left cylinder cap (2) is shaped with on the cylindrical wall of right cylinder cap (5) radial direction through hole being communicated with piston (4) two ends piston cavity respectively, radial direction through hole on radial direction through hole on left cylinder cap (2) and right cylinder cap (5) is interconnected by pipeline, cylinder body (1) is provided with the connecting base be fixedly connected with check valve body, it is characterized in that the right-hand member of piston rod (3) is fixedly connected with by the axis hole of axial flat key with safety check flap, the left end of piston rod (3) is shaped with hexagonal release handle, the middle part of piston rod (3) is shaped with screw thread, piston (4) cooperatively interacts with the screw thread on piston rod (3) and is connected, between left cylinder cap (2) and right cylinder cap (5) interior edge face, fixedly mount guide rod (6), piston (4) is shaped with the pilot hole coordinated with guide rod (6) motive sealing, cylinder body (1) is shaped with the through hole being communicated with piston (4) left hand piston chamber, the through hole on this cylinder body (1) is communicated with the radial direction through hole on right cylinder cap (5) by one-way throttle valve, left cylinder cap (2) inner side be shaped with the looping pit (10) be communicated with its radial direction through hole between piston rod (3), piston (4) left side connecting cylinder ring (9), the periphery of this cylinder ring (9) coordinates with the inner hole wall motive sealing of looping pit (10).
2. the slow closing device of Swing check valve according to claim 1, it is characterized in that one-way throttle valve is composed in parallel by throttle valve (7) and one-way valve (8), the positive flow port of one-way valve (8) is communicated with the radial direction through hole of right cylinder cap (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420468915.0U CN204042083U (en) | 2014-08-15 | 2014-08-15 | A kind of slow closing device of Swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420468915.0U CN204042083U (en) | 2014-08-15 | 2014-08-15 | A kind of slow closing device of Swing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204042083U true CN204042083U (en) | 2014-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420468915.0U Withdrawn - After Issue CN204042083U (en) | 2014-08-15 | 2014-08-15 | A kind of slow closing device of Swing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204042083U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315203B (en) * | 2014-08-15 | 2016-08-17 | 伯特利阀门集团有限公司 | A kind of slow closing device of swing check valve |
-
2014
- 2014-08-15 CN CN201420468915.0U patent/CN204042083U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315203B (en) * | 2014-08-15 | 2016-08-17 | 伯特利阀门集团有限公司 | A kind of slow closing device of swing check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141224 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |