CN110360352A - A kind of adjustable swing check valve - Google Patents

A kind of adjustable swing check valve Download PDF

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Publication number
CN110360352A
CN110360352A CN201910683243.2A CN201910683243A CN110360352A CN 110360352 A CN110360352 A CN 110360352A CN 201910683243 A CN201910683243 A CN 201910683243A CN 110360352 A CN110360352 A CN 110360352A
Authority
CN
China
Prior art keywords
shaft
valve body
check valve
flap
swing check
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.)
Granted
Application number
CN201910683243.2A
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Chinese (zh)
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CN110360352B (en
Inventor
郑嗣堡
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.)
Zhongchi Valve Group Co ltd
Original Assignee
Zhejiang Zhongchi Valve Industry 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 Zhejiang Zhongchi Valve Industry Co Ltd filed Critical Zhejiang Zhongchi Valve Industry Co Ltd
Priority to CN201910683243.2A priority Critical patent/CN110360352B/en
Publication of CN110360352A publication Critical patent/CN110360352A/en
Application granted granted Critical
Publication of CN110360352B publication Critical patent/CN110360352B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00Check valves
    • F16K15/02Check valves with guided rigid valve members
    • F16K15/03Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F16K15/033Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded

Abstract

The present invention relates to check valve technical fields, it is desirable to provide a kind of swing check valve, including valve body, valve deck, shaft, flap, being arranged in the shaft relative torsion and can generate the torsionspring of twisting resistance;The both ends that the torsionspring extends, one end are round end, and the other end is working end;The working end is fixedly connected with flap, and the round end is fixedly connected with shaft, and the round end can be rotated along flap rotation direction make working end twist to generate twisting resistance;Described shaft one end is provided with the splined shaft axially extended, and flower pattern slot engaged therewith is offered in the valve body, and the shaft can be moved along rotating shaft core line direction, and movable distance is greater than the length of splined shaft;The problem of present invention solves swing check valve and is mounted in non-horizontal pipeline and when medium flows from above to below, and flap can not be completely enclosed media outlet by itself effect of weight, and check-valves is made to lose the function of preventing medium back flow.

Description

A kind of adjustable swing check valve
Technical field
The present invention relates to check-valves technical field, in particular to a kind of adjustable swing check valve.
Background technique
Check-valves is also known as check valve or non-return valve, and effect is to prevent the medium in pipeline from flowing backwards.When the medium in pipeline When forward flow, the flap of check-valves automatically turns under the action of medium power, when the medium reverse flow in pipeline, flap It is automatically closed under the action of medium power.Swing check valve have a valve rod and it is tilting and can around the flap that valve rod rotates, Flap is installed at medium inlet, and flap can be such that entrance closes towards rotation at medium inlet when medium counter flow.
Swing check valve may be mounted on non-horizontal pipeline in the prior art, but the flow direction of medium can only during installation From bottom to top, otherwise flap can not achieve check function because can not be closed the reason of gravity.
Summary of the invention
, can be simultaneously in non-horizontal pipeline the object of the present invention is to provide a kind of adjustable swing check valve, medium The effect for preventing medium back flow is realized when flowing from above to below.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of adjustable swing check valve, including valve body, valve deck, shaft, flap;The valve body both ends are respectively arranged with medium Entrance and media outlet;The flap can be rotated and be closed towards medium inlet direction, it is characterised in that: in the shaft It is arranged with torsionspring;The both ends that the torsionspring extends, one end are round end, and the other end is working end;The work End is fixedly connected with flap, and the round end is fixedly connected with shaft;Described shaft one end is provided with the spline axially extended Axis, the side that splined shaft is corresponded in the valve body are provided with flower pattern slot with splined shaft cooperation;The shaft can be along rotating shaft core Line direction is mobile, and movable distance is greater than the length of splined shaft.
By using above-mentioned technical proposal, adjustable swing check valve is mounted in non-horizontal pipeline, and medium is from upper And when lower flowing, flap is set at medium inlet and can rotate towards medium inlet direction, and medium washes valve deck open by medium inlet And it is flowed out from media outlet;By opening valve deck, the rotation intracorporal shaft of valve to suitable angle and is driven on torsionspring Round end twists, and so that torsionspring is generated a twisting resistance and is transferred to working end, so that the flap on working end be made to obtain Obtain a propulsive force along flap closing direction;Under original state, the splined shaft in shaft is being adjusted completely into arriving in flower pattern slot Shaft is moved to outside flower pattern slot along axial line towards far from valve body side when section, makes flower pattern slot that can not form rotation limit to splined shaft System, the elastic force after adjusting due to torsionspring itself on rotating shaft core line direction, shaft reset, make splined shaft again into Enter in flower pattern slot;It when splined shaft in shaft enters flower pattern slot, can make shaft that can not rotate, prevent shaft because of torsionspring It resets and inverts, it is on the contrary then shaft can be made to rotate;The adjustable swing check valve is installed in non-horizontal pipeline and flap Upward rotation turned an angle when being closed medium inlet by shaft, the propulsive force for being subject to flap be just slightly larger than by The opposite resistance that flap gravity generates makes flap under non-working condition still in closed state, and medium under working condition It can avoid blocking by smoothly washing flap open from mobilization force, realize adjustable swing check valve medium in non-horizontal pipeline The effect of medium back flow is prevented when flowing from above to below.Structure is simple, practical reliable.
The present invention is further arranged to: being offered and shaft gap on the outside of the valve body in the side surface far from splined shaft The handle hole of cooperation;The shaft other end is provided with operating head.
By using above-mentioned technical proposal, shaft is extended on the outside of valve body by handle hole, propulsion needed for making flap Power can be adjusted outside valve body by turning operating head, do not needed to open valve deck, kept whole operation process more convenient.
The present invention is further arranged to: it is cylindrical for being equipped with shape on described turn between operating head and the outer wall of valve body Seal disc;Seal disc is conllinear with handle hole axial line and sealing disk diameter is greater than operation bore dia;The adjustable swing type stops Returning valve further includes for seal disc to be extruded in the clamp device that valve body surface is sealed handle hole.
By using above-mentioned technical proposal, valve body grasp seal disc will by the seal disc that diameter in shaft is greater than handle hole Make hole and cover and pass through clamp device to keep valve body closed towards the extruding force on the inside of valve body to seal disc one, prevents dielectric leakage.
The present invention is further arranged to: the clamp device includes connection ring and the attachment base that is set on valve outer wall; The connection ring is conllinear with rotating shaft core line, and the connection ring is provided with internal screw thread in ring inner wall;The connection ring is far from valve body One end is equipped with diameter and is less than seal disc and is circular movable span with the shape of connection ring coaxial inner conductor;The connection ring passes through Movable span is sheathed in shaft between seal disc and operating head;The attachment base is in the circular tube shaped with handle hole coaxial inner conductor, and Internal diameter is identical as operation bore dia;The external screw thread with connection ring screw-internal thread fit is provided on the outside of the attachment base.
By using above-mentioned technical proposal, connection ring and attachment base are connected in seal disc between the two by screw thread Connect and seal disc be fixed on valve body, make it is rotation shaft regulated after be fastened on valve body, prevent shaft be not fixed appearance accidentally grasp Make situation.
The present invention is further arranged to: the attachment base in far from valve body one end end face on be embedded with rubber ring.
By using above-mentioned technical proposal, the use of rubber ring keeps the leakproofness at valve operation hole position more reliable.
The present invention is further arranged to: the operation head shapes are cylinder;The operating head diameter is greater than in connection ring Movable bore dia.
By using above-mentioned technical proposal, connection ring far from valve body one end when along moving since the diameter of operating head is greater than The diameter of movable span in connection ring, and the diameter of fixed disk makes connection ring can not be from shaft also greater than the diameter of movable span Take out, effectively prevent connection ring it is unlocked it is preceding go out active the case where.
The present invention is further arranged to: the operating head is provided with hexagonal indentations far from valve body one end.
It by using above-mentioned technical proposal, operates cephalic par and is provided with hexagonal indentations, can be twisted by allen wrench Turn axis makes to operate more convenient.
The present invention is further arranged to: the flower pattern slot is provided with secondary structure, and the flower pattern slot is secondary structure, including First-stage tank, second-level groove along the setting of same center line, the section of the second-level groove is the flower pattern cooperated with splined shaft, the level-one The section of slot is circle, and the splined shaft can be in the axial line rotation in first-stage tank along shaft.
By using above-mentioned technical proposal, the flower pattern slot of splined shaft cooperation is provided with secondary structure, when shaft removes, turns Axis is only moved to outside second-level groove, and shaft end remains in first-stage tank, and shaft can be fixed by second-level groove rotates angle, and first-stage tank It can prevent shaft and annular groove center line bias and shaft is caused to cannot be introduced into flower pattern slot.
The present invention is further arranged to: the surface of the shaft is equipped on the inside of valve body close to handle hole direction can not be from behaviour The limited block passed through as hole.
By using above-mentioned technical proposal, the limited block in shaft make shaft along rotating shaft core line towards moving on the outside of valve body Shi Buhui is fully removed, and is prevented valve inner destructurized, is played the role of limit and protection.
In conclusion the invention has the benefit that
1, working portion being made of in the adjustable swing check valve shaft, torsionspring, flap, by being located in shaft Shaft carrys out rotating shaft in the operating head of valve body lateral ends, so that shaft is gone to suitable angle and drives the rotation of torsionspring End twists, and so that torsionspring is generated a twisting resistance and is transferred to working end, so that the flap on working end be made to obtain one A propulsive force along flap closing direction;And it is additionally provided with splined shaft and flower pattern slot on shaft end and valve interior wall, turn shaft Shaft rotational angle can be locked after moving to proper angle, prevented shaft and inverted because torsionspring resets.The adjustable rotation When opening formula check-valves are installed in non-horizontal pipeline, the propulsive force that flap is subject to just be slightly larger than generated by flap gravity it is opposite Resistance, make flap under non-working condition still in closed state, and medium can be smooth by self gravity under working condition It washes flap open to avoid blocking, prevention when realizing adjustable swing check valve medium flowing from above to below in non-horizontal pipeline The effect of medium back flow.Structure is simple, practical reliable;
2, the attachment base on the outside of valve body and the connection ring for being movably connected on shaft, will be in the sealing between attachment base and connection ring Disk, which is connected through a screw thread, to be fixed on valve body, and three is integrally fixedly connected, and rubber ring is additionally provided on attachment base, and it is adjustable to reach this The effect for saving swing check valve fastening and sealing, preventing the adjustable swing check valve, shaft loosens or goes out at work Now leak.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention;
Fig. 2 is schematic cross-sectional view of the invention;
Fig. 3 is configuration schematic diagram of the invention;
Fig. 4 is enlarged diagram at A in Fig. 3, for showing round end and working end;
Fig. 5 is the partial schematic sectional view at another visual angle of the present invention;
Fig. 6 is enlarged diagram at B in Fig. 5.
Appended drawing reference: 1, valve body;11, handle hole;12, attachment base;121, rubber ring;13, flower pattern slot;131, first-stage tank; 132, second-level groove;2, valve deck;3, shaft;31, flap;32, torsionspring;321, round end;322, working end;33, splined shaft; 34, operating head;35, connection ring;351, movable span;36, seal disc;37, limited block;4, medium inlet;5, media outlet.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Present embodiment discloses a kind of adjustable swing check valves, as shown in Figure 1 and Figure 2, including valve body 1, valve deck 2, turn Axis 3, flap 31,1 both ends of valve body are respectively arranged with medium inlet 4 and media outlet 5.
As shown in Figure 2 and Figure 3, which is mounted in non-horizontal pipeline, and medium flows from top to bottom When dynamic, flap 31 is set at medium inlet 4, and medium is broken through flap 31 by medium inlet 4 and flowed out from media outlet 5;Valve body 1 Surface offers the round handle hole 11 entered in valve body 1 for shaft 3, shaft 3 and 11 clearance fit of handle hole.Shaft 3, which pass through handle hole 11, enters in valve body 1, and 3 end of shaft is located at 1 inside of valve body, and head end is located at 1 outside of valve body and end is equipped with one The operating head 34 of hexagonal indentations is offered in a cylindrical type, operator is turned outside valve body 1 by allen wrench Operating head 34 makes shaft 3 rotate, and avoids the trouble directly opened valve deck 2 and adjust shaft 3 in valve body 1.
As shown in Figure 3, Figure 4, torsionspring 32 is arranged in shaft 3, the form of torsionspring 32 is torsion spring, torsion spring Be made of two conllinear torsional springs of axial line, one end interconnected that two torsional spring ends are extended be working end 322, two One end independent that torsional spring end is extended is round end 321;Round end 321 is fixedly connected with shaft 3, working end 322 It is fixedly connected with flap 31, rotating shaft 3 to suitable angle simultaneously drives the round end 321 of torsionspring 32 to twist, and makes Torsionspring 32 generates a twisting resistance and is transferred to 32 working end 322 of torsionspring, to make the flap 31 on working end 322 Obtain a propulsive force along 31 closing direction of flap.
As shown in Figure 3, Figure 4, one end that shaft 3 is located at 1 inside of valve body is equipped with the splined shaft conllinear with 3 axial line of shaft 33, the flower pattern slot 13 with 33 clearance fit of splined shaft, splined shaft 33 are offered on the side inner wall in valve body 1 far from operating head 34 Shaft 3 can not rotate after being fully inserted into flower pattern slot 13, and rotational angle can be changed in shaft 3 when removing, and rotates for controlling shaft 3 Turn.Flower pattern slot 13 is secondary structure, and including first-stage tank 131, the second-level groove 132 being arranged along same center line, second-level groove 132 is cut Face is the flower pattern cooperated with splined shaft 33, and the section of first-stage tank 131 is circle, and splined shaft 33 can turn in edge in first-stage tank 131 The axial line of axis 3 rotates.Shaft 3 can move along 3 direction of axis line of shaft and splined shaft 33 is made to remove one section from flower pattern slot 13 Distance makes 3 end splined shaft 33 of shaft be detached from second-level groove 132, but remains in first-stage tank 131, and shaft 3 is always in whole process It stays in flower pattern slot 13, shaft 3 and 13 center line of flower pattern slot is avoided to shift and shaft 3 is caused to cannot be introduced into flower pattern slot 13 It is interior.
As shown in Figure 3, Figure 4, be equipped in the inside of valve body 1 close to 11 direction of handle hole can not be from handle hole on the surface of shaft 3 11 limited blocks 37 passed through, limited block 37 make shaft 3 be greater than the depth of second-level groove 132 towards the moving distance in 1 outside of valve body, are less than The depth of entire flower pattern slot 13, can make shaft 3 remove and prevent shaft 3 from removing entire flower pattern slot 13 from second-level groove 132 Keep second-level groove 132 ineffective, while prevents shaft 3 towards that will not be fully removed when moving on the outside of valve body 1, along 3 axle center of shaft Only structure is destroyed in valve body 1, plays the role of limit and protection.
As shown in Figure 5, Figure 6, shaft 3 is fixedly connected with a seal disc 36 in 1 outer fix of valve body;Seal disc 36 is cylinder Shape and axial line and shaft 3 are conllinear, and 36 diameter of seal disc is greater than 11 diameter of handle hole, and seal disc 36 is enable to cover handle hole 11;Clamp device is integrally respectively formed by a component with 1 outside of valve body in shaft 3, seal disc 36 is extruded on 1 surface of valve body Handle hole 11 at handle hole 11 is sealed, clamp device includes connection ring 35 and the company that is set on 1 outer wall of valve body Joint chair 12;Connection ring 35 is conllinear with 3 axial line of shaft, and connection ring 35 is provided with internal screw thread in ring inner wall;Connection ring 35 is far from valve 1 one end of body is semi-closed state, connection ring 35 diameter is opened up on the end face far from 1 one end of valve body less than seal disc 36 and Shape with 35 coaxial inner conductor of connection ring is circular movable span 351, and connection ring 35 is made to be sheathed on seal disc 36 and behaviour in shaft 3 Make between first 34, connection ring 35 can be rotated between seal disc 36 and operating head 34 and be moved along 3 direction of axis line of shaft;Connection Seat 12 is in the circular tube shaped with 11 coaxial inner conductor of handle hole, and internal diameter is identical as 11 diameter of handle hole;It is provided on the outside of attachment base 12 With the external screw thread of screw-internal thread fit;Connection ring 35 and attachment base 12 are connected through a screw thread in seal disc 36 between the two Connection ring 35, seal disc 36, entirety is fixed, sealing and fixed effect are played to valve body 1, after adjusting shaft 3 It is fastened on valve body 1, prevents shaft 3 not to be fixed and maloperation situation occur, and attachment base 12 is embedded with far from 1 end surface of valve body Rubber ring 121, for further increasing leakproofness at seal disc 36.
The present embodiment operating process is as follows:
When the adjustable swing check valve is mounted in non-horizontal pipeline, it is applicable to two kinds of situations.
It is installed in non-horizontal pipeline when swing check valve is adjusted in this, when medium flows from bottom to top, flap 31 At the medium inlet 4 of check-valves lower end, and it can be rotated towards 4 direction of medium inlet and carry out overwrite media entrance 4, medium is from bottom to top When forward flow, without the shaft 3 in regulation valve body 1, the upward propulsive force that medium flows generation upward overcomes flap 31 certainly The potential energy that body gravity and spring generate washes flap 31 open certain angle, and medium is made to pass through valve body 1;Medium reverse flow from top to bottom When dynamic, since the thrust of 31 self gravity of flap and medium covers flap 31 by medium inlet 4, check function is realized.
Adjustable swing check valve is mounted in non-horizontal pipeline, and when medium flows from above to below, flap 31 is located at only It returns at the medium inlet 4 of valve upper end and can be rotated towards 4 direction of medium inlet and carry out overwrite media entrance 4, medium is by medium inlet 4 It washes flap 31 open and is flowed out from media outlet 5;Realize check function can by open valve deck 2, rotate valve body 1 in shaft 3 to Suitable angle simultaneously drives the round end 321 of torsionspring 32 to twist, and so that torsionspring 32 is generated a twisting resistance and passes It is handed to working end 322, so that the flap 31 on working end 322 be made to obtain a propulsive force along 31 closing direction of flap;And turn Axis 3 extends to 1 outside of valve body by handle hole 11, and propulsive force needed for alloing flap 31 passes through operating head 34 outside valve body 1 Shaft 3 is turned to adjust, does not need to open valve deck 2, keeps whole operation process more convenient;Shaft 3 is before adjusting, in shaft 3 Splined shaft 33 completely into in flower pattern slot 13, shaft 3 is moved to two towards far from 1 side of valve body along axial line when adjusting Outside grade slot 132, in first-stage tank 131, make flower pattern slot 13 that can not form rotation limitation to splined shaft 33, due to torsion after adjusting Elastic force of the spring 32 itself on 3 direction of axis line of shaft, shaft 3 reset, and splined shaft 33 is made to reenter 13 second level of flower pattern slot In slot 132;When splined shaft 33 in shaft 3 enters 13 second-level groove 132 of flower pattern slot, it can make shaft 3 that can not rotate, prevent shaft 3 invert because torsionspring 32 resets, on the contrary then shaft 3 is enable to rotate;After shaft 3 is adjusted, pass through connection ring 35 With attachment base 12 being threaded on valve body 1 in seal disc 36 between the two, valve is fastened on after adjusting shaft 3 On body 1, the effect of sealed valve body 1 Yu fixed rotating shaft 3 is played, prevents shaft 3 not to be fixed and maloperation situation occurs.This is adjustable When swing check valve is installed in non-horizontal pipeline and flap 31 rotates upward to be closed medium inlet 4, then pass through shaft 3 It turns an angle, the propulsive force for being subject to flap 31 is greater than the opposite resistance generated by 31 gravity of flap, and flap 31 is made to exist Still in closed state under non-working condition, and medium can be by overcoming torsionspring 32 to generate from mobilization force under working condition Twisting resistance smoothly washes flap 31 open and avoid blocking, realize adjustable swing check valve in non-horizontal pipeline medium from upper And the effect of medium back flow is prevented when lower flowing.Structure is simple, practical reliable.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this All by the protection of Patent Law in the scope of the claims of invention.

Claims (9)

1. a kind of adjustable swing check valve, including valve body (1), valve deck (2), the shaft (3) being set in valve body (1), valve Valve (31);The both ends of the valve body (1) are respectively arranged with medium inlet (4) and media outlet (5);The flap (31) being capable of court Medium inlet (4) direction rotates and is closed, it is characterised in that: is arranged with torsionspring (32) on the shaft (3);It is described The both ends that torsionspring (32) extends, one end are round end (321), and the other end is working end (322);The working end (322) it is fixedly connected with flap (31), the round end (321) is fixedly connected with shaft (3);Shaft (3) one end setting There is the splined shaft (33) axially extended, the side that splined shaft (33) is corresponded in the valve body (1) is provided with and splined shaft (33) The flower pattern slot (13) of cooperation;The shaft (3) can be mobile along shaft (3) direction of axis line, and movable distance is greater than splined shaft (33) length.
2. adjustable swing check valve according to claim 1, it is characterised in that: in separate on the outside of the valve body (1) One side surface of splined shaft (33) offers and the handle hole (11) of shaft (3) clearance fit;The shaft (3) is far from splined shaft (33) one end extends to handle hole (11) outside and end is provided with operating head (34).
3. adjustable swing check valve according to claim 1, it is characterised in that: in operating head on the shaft (3) (34) it is cylindrical seal disc (36) that shape is equipped between the outer wall of valve body (1);Seal disc (36) and handle hole (11) axis Heart line is conllinear and seal disc (36) diameter is greater than handle hole (11) diameter;The adjustable swing check valve further includes for inciting somebody to action Seal disc (36) is extruded in the clamp device that valve body (1) surface is sealed handle hole (11).
4. adjustable swing check valve according to claim 3, it is characterised in that: the clamp device includes connection ring (35) with the attachment base (12) that is set on valve body (1) outer wall;The connection ring (35) is conllinear with shaft (3) axial line, described Connection ring (35) is provided with internal screw thread in ring inner wall;The connection ring (35) is equipped with diameter less than close far from valve body (1) one end Closing disk (36) and with the shape of connection ring (35) coaxial inner conductor be circular movable span (351);The connection ring (35) passes through work Dynamic hole (351) are sheathed between the seal disc (36) on shaft (3) and operating head (34);The attachment base (12) is in and handle hole (11) circular tube shaped of coaxial inner conductor, and internal diameter is identical as handle hole (11) diameter;It is provided with and connects on the outside of the attachment base (12) Connect the external screw thread of ring (35) screw-internal thread fit.
5. adjustable swing check valve according to claim 4, it is characterised in that: the attachment base (12) is in far from valve Rubber ring (121) are embedded on the end face of body (1) one end.
6. adjustable swing check valve according to claim 2, it is characterised in that: operating head (34) shape is circle Cylindricality;Operating head (34) diameter is greater than movable span (351) diameter on connection ring (35).
7. adjustable swing check valve according to claim 2, it is characterised in that: the operating head (34) is far from valve body (1) one end is provided with hexagonal indentations.
8. adjustable swing check valve according to claim 1, it is characterised in that: the flower pattern slot (13) is second level knot Structure, including first-stage tank (131), the second-level groove (132) being arranged along same center line, the section of the second-level groove (132) is and flower The section of the flower pattern of key axis (33) cooperation, the first-stage tank (131) is circle, and the splined shaft (33) can be in first-stage tank (131) it is rotated in along the axial line of shaft (3).
9. adjustable swing check valve according to claim 1, it is characterised in that: the surface of the shaft (3) is in valve The limited block (37) that can not be passed through from handle hole (11) is equipped on the inside of body (1) close to handle hole (11) direction.
CN201910683243.2A 2019-07-26 2019-07-26 Adjustable swing check valve Active CN110360352B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910683243.2A CN110360352B (en) 2019-07-26 2019-07-26 Adjustable swing check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910683243.2A CN110360352B (en) 2019-07-26 2019-07-26 Adjustable swing check valve

Publications (2)

Publication Number Publication Date
CN110360352A true CN110360352A (en) 2019-10-22
CN110360352B CN110360352B (en) 2021-03-12

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113859983A (en) * 2021-09-27 2021-12-31 张家口宣化华泰矿冶机械有限公司 Resin cartridge conveying device
CN115773394A (en) * 2023-02-13 2023-03-10 通威微电子有限公司 Residual pressure valve and air conditioning chamber

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172424A (en) * 1962-07-24 1965-03-09 Crawford K Stillwagon Disc type check valve
FR2432663A1 (en) * 1978-08-02 1980-02-29 Constantin Pierre Flap valve with tangential axle - opens at rate set by torsion springs of which tension is adjusted by rotating head of lockable axle
US4304255A (en) * 1979-05-31 1981-12-08 K-F Prince Valve, Inc. Swing check valve
WO1997008481A1 (en) * 1995-08-29 1997-03-06 Kabushiki Kaisha Yokota Seisakusho Swing type non-water hammer check valve
CN1262376A (en) * 1999-01-27 2000-08-09 张钟福 Door hinge device
WO2001029461A1 (en) * 1999-10-18 2001-04-26 Polaris Pool Systems, Inc. Flow controller for a pool cleaner
JP2004270709A (en) * 2003-03-05 2004-09-30 Morita Tekkosho:Kk Butterfly check valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172424A (en) * 1962-07-24 1965-03-09 Crawford K Stillwagon Disc type check valve
FR2432663A1 (en) * 1978-08-02 1980-02-29 Constantin Pierre Flap valve with tangential axle - opens at rate set by torsion springs of which tension is adjusted by rotating head of lockable axle
US4304255A (en) * 1979-05-31 1981-12-08 K-F Prince Valve, Inc. Swing check valve
WO1997008481A1 (en) * 1995-08-29 1997-03-06 Kabushiki Kaisha Yokota Seisakusho Swing type non-water hammer check valve
CN1262376A (en) * 1999-01-27 2000-08-09 张钟福 Door hinge device
WO2001029461A1 (en) * 1999-10-18 2001-04-26 Polaris Pool Systems, Inc. Flow controller for a pool cleaner
JP2004270709A (en) * 2003-03-05 2004-09-30 Morita Tekkosho:Kk Butterfly check valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113859983A (en) * 2021-09-27 2021-12-31 张家口宣化华泰矿冶机械有限公司 Resin cartridge conveying device
CN115773394A (en) * 2023-02-13 2023-03-10 通威微电子有限公司 Residual pressure valve and air conditioning chamber

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