CN105715834B - A kind of swing check valve - Google Patents
A kind of swing check valve Download PDFInfo
- Publication number
- CN105715834B CN105715834B CN201610263932.4A CN201610263932A CN105715834B CN 105715834 B CN105715834 B CN 105715834B CN 201610263932 A CN201610263932 A CN 201610263932A CN 105715834 B CN105715834 B CN 105715834B
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- China
- Prior art keywords
- limit switch
- permanent magnet
- check
- pin shaft
- valve body
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
Abstract
The present invention provides a kind of swing check valve, comprising: dynamic position of magnetic pole indicator is arranged in one end of the pin shaft, rotates with the flap component synchronization, be equipped with the first permanent magnet and the second permanent magnet；Close to induction type limit switch, it is fixed at the front of dynamic position of magnetic pole indicator, is provided with the first limit switch and the second limit switch；When the flap component turns to closure of check ring position, first permanent magnet is only corresponding with the first limit switch to make first limit switch generate electromagnetic signal, when the flap component turns to check-valves open position, second permanent magnet is only corresponding with second limit switch so that second limit switch generates electromagnetic signal.It is described can only all generate single signal close to induction type limit switch when check-valves opens and closes, to accurately determine that valve opens or closes state.
Description
Technical field
The present invention relates to check-valves technical fields, and in particular to a kind of swing check valve with position indicating function.
Background technique
Swing check valve is also known as check valve or non-return valve, and effect is to prevent the medium in pipeline from flowing backwards.In check-valves
The flap in portion opens or closes medium channel by media flow and self gravity.Check-valves belongs to automatic valve class, is mainly used for being situated between
On the pipeline of matter one-way flow, only medium is allowed to flow to a direction, to try to avert accidents.
The swing check valve of the prior art is used in mostly in nuclear plant safety injected system and reactor cooling system, only
It goes back to valve position and belongs to nuclear power station key position, once there is the leakage of substance, will lead to serious production accident, therefore need
It to be monitored in real time to whether check-valves flap is opened.
Patent document CN102734506A discloses a kind of swing check valve with position indicator, including flap, company
Meet the rocker arm on flap, the output shaft being arranged on rocker arm, a dynamic position of magnetic pole indicator being arranged on output shaft, institute
One permanent magnet of setting in position of magnetic pole indicator is stated, further includes closing determining for two each self installations of extreme position in externally opened valve body
Position of magnetic pole indicator.Its working principle is that: when valve working, permanent magnet on output shaft is rotated with synchronous rocker, only
The position that valve turns on or off is gone back to, one is respectively arranged with and determines position of magnetic pole indicator, position is opened and closed in flap, moves
Permanent magnet on position of magnetic pole indicator determines that electromagnetic induction occurs between position of magnetic pole indicator respectively with two, determines position of magnetic pole
Indicator generates electric signal, generates signal by judging which determines position of magnetic pole indicator, determines that valve is in the open state also
It is closed state.
But due to the limitation in valve inner space, rocker arm can only rotate lesser angle, dynamic with synchronous rocker rotation
Permanent magnet in position of magnetic pole indicator can only also rotate lesser angle, still, in the rotation process of such low-angle, forever
Magnet, which must also be able to determine from one to turn to another from position of magnetic pole indicator, to be determined at position of magnetic pole indicator, so two
Determine necessary very little separated by a distance between position of magnetic pole indicator, therefore causes to determine magnetic pole with any when dynamic position of magnetic pole indicator
While position indicator generates electromagnetic induction, position of magnetic pole indicator can be also determined with another and generates electromagnetic induction, is caused
Two are determined position of magnetic pole indicator output signal simultaneously, can not accurately be judged that valve is actually in the open state or be closed shape
State.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcome in the prior art swing check valve be difficult to accurate determination
The defect itself turned on or off, so that the swing check valve that valve opens or closes can accurately be indicated by providing one kind.
For this purpose, the present invention provides a kind of swing check valve, comprising: valve body, the valve inner is equipped with to be flowed for fluid
Horizontal channel and Vertical Channel, the position adjacent with the Vertical Channel is equipped with seat ring on the horizontal channel inner wall；Valve
Valve component, the flap component are rotatably connected in the Vertical Channel by pin shaft, and the flap component can be just
The seat ring is left under the action of to fluid, opens the check-valves, or institute is bonded under counter fluid and self gravitation effect
Seat ring is stated, the check-valves is closed；Dynamic position of magnetic pole indicator, is arranged in one end of the pin shaft, same with the flap component
Step rotation, is equipped with the first permanent magnet and the second permanent magnet；Close to induction type limit switch, it is fixed at dynamic position of magnetic pole and refers to
The front for showing device is provided with the first limit switch and the second limit switch；The flap component turns to check-valves pass
When closed position, first permanent magnet is only corresponding with the first limit switch to make first limit switch generate electromagnetic signal, institute
When stating flap component and turning to check-valves open position, second permanent magnet is only corresponding with second limit switch so that institute
It states the second limit switch and generates electromagnetic signal.
The pin shaft is arranged in the Vertical Channel perpendicular to the vertical plane of the Vertical Channel；The flap component packet
Include: rocking bar, one end are sleeved and fixed on the pin shaft；And flap, it is connected to what the separate and pin shaft of the rocking bar was connect
On one end.
The dynamic position of magnetic pole indicator includes connecting rod, is arranged through the body wall, and one end is connected to the pin
It is rotated synchronously on axis with the pin shaft, the other end is extend out to outside the valve body；Permanent magnet disk is arranged outside the valve body
Portion is fixed on one end outside the stretching valve body of the connecting rod, is inside fixedly installed with first permanent magnet and institute
State the second permanent magnet.
Include connecting plate close to induction type limit switch, is arranged outside the valve body, it is outer with a part of the valve body
Connecting cavity is constituted between wall；
Position indicator is mounted on the connecting plate, has the induction end being located inside the connecting cavity, the induction
First limit switch and second limit switch are set on end.
The outer wall of the valve body is equipped with the chamber being recessed inwardly, and the chamber has opening towards the position indicator
Mouthful, the opening cover is buckled with the plug screw for sealing the opening, and the one end of the connecting rod extending out to outside valve body is located at institute
It states in chamber, the permanent magnet disk setting is in the cavity.
Extend the boss for being parallel to the horizontal channel, the pin shaft in the Vertical Channel of the lower section of the pin shaft
Both ends be connected with pin sleeve, the pin shaft can rotate in the pin sleeve, pin shaft cover board is equipped with above the pin sleeve,
It is linked together between the pin shaft cover board and the boss by fastener.
It is connected by key between the pin shaft and the rocking bar.
It is connected by screw between the rocking bar and flap, the flap is globoidal structure, and the globoidal structure is towards institute
State the front protrusion in positive flow of fluid direction.
The streamline portion being recessed outward, the streamline are provided at the position that the Vertical Channel is connected with the horizontal channel
Portion corresponds to the front of swaying direction of the rocking bar under positive fluid matasomatism.
Technical solution of the present invention has the advantages that
1. swing check valve provided by the invention, the dynamic position of magnetic pole indicator turn with the flap component synchronization
It is dynamic, the first permanent magnet and the second permanent magnet are installed；It is described close to induction type limit switch, be fixed at dynamic position of magnetic pole and refer to
The front for showing device is provided with the first limit switch and the second limit switch；When the flap component turns to check-valves
When closed position, first permanent magnet is only corresponding with the first limit switch to make first limit switch generate electromagnetic signal,
When the flap component turns to check-valves open position, second permanent magnet only it is corresponding with second limit switch so that
Second limit switch generates electromagnetic signal.Check-valves open and close when, it is described close to induction type limit switch all only
Single signal can be generated, not will cause the confusion of output signal, can accurately determine that valve is in the open state or closes
State.
2. swing check valve provided by the invention, the dynamic position of magnetic pole indicator includes connecting rod, run through the valve body
Side wall setting, one end is connected on the pin shaft to be rotated synchronously with the pin shaft, and the other end is extend out to outside the valve body；Forever
Magnet disk is arranged outside the valve body, is fixed on one end outside the stretching valve body of the connecting rod, interior fixed
First permanent magnet and second permanent magnet are installed.
Above-mentioned check-valves connects permanent magnet disk since connecting rod stretches out the outside of the valve body, it can be in valve body
The first permanent magnet of disposed outside and the second permanent magnet, avoid valve inner arrangement when, cause valve inner space crowded；
Also, the first permanent magnet and the second permanent magnet are each attached on permanent magnet disk, and in connection-rod linkage permanent magnet turntable, first forever
The rotational angle of magnet and the second permanent magnet is identical, thus in design, as long as being opened according to the first limit switch and the second limit
The relative position of the relative position of pass pre-designed first permanent magnet and the second permanent magnet, so that it may in rotating permanent magnet disk
Guarantee that the first permanent magnet is only contacted with the first electric shock in the process, the second permanent magnet is only contacted with the second limit switch, facilitates realization
Technical solution of the present invention.
3. swing check valve provided by the invention includes connecting plate close to induction type limit switch, it is arranged in the valve
Outside body, connecting cavity is constituted between a part of outer wall of the valve body；
Position indicator is mounted on the connecting plate, has the induction end being located inside the connecting cavity, the induction
First limit switch and second limit switch are set on end.
The outside of valve body is integrally located at close to induction type limit switch, consequently facilitating installation, and it is possible in graduated release valve body
The crowded state in portion, in addition, being convenient for its state of external observation；Its induction end is located in connecting cavity, can protect in induction end
The accuracy of the induction of one limit switch and the second limit switch, avoids external interference.
4. swing check valve provided by the invention, the outer wall of the valve body is equipped with the chamber being recessed inwardly, the chamber
Room has the opening towards the position indicator, and the opening cover is buckled with the plug screw for sealing the opening, the connecting rod
The one end extending out to outside valve body be located in the chamber, permanent magnet disk setting in the cavity, passes through to be formed
The chamber, for installing permanent magnet disk, it is ensured that the first permanent magnet and second on the permanent magnet disk is forever
Magnet by external interference, does not improve the accuracy of finally formed signal；Also, sealing the opening by plug screw can make
Valve body is sealed by the perforative part of connecting rod, prevents gap of the gas between the connecting rod and the body wall from entering valve body
It is internal.
5. swing check valve provided by the invention extends in the Vertical Channel of the lower section of the pin shaft and is parallel to
The boss of the horizontal channel, the both ends of the pin shaft are connected with pin sleeve, and the pin shaft can rotate in the pin sleeve,
It is equipped with pin shaft cover board above the pin sleeve, is linked together between the pin shaft cover board and the boss by fastener.It is anti-
Only the valve plate drives the pin shaft during rotation, and the pin shaft is avoided to shake on valve body, so that flap opens and closes
Process is steady.
6. swing check valve provided by the invention is connected by key between the pin shaft and the rocking bar.Rocking bar one end
It is connected with flap, the pin shaft and the permanent magnet disk rotate synchronously, and the permanent magnet disk can be guaranteed by being connected by key
It is moved synchronously with the flap, it is ensured that the permanent magnet disk can accurately issue the position signal of the flap.
7. swing check valve provided by the invention is connected by screw between the rocking bar and flap, the flap is
Globoidal structure, front protrusion of the globoidal structure towards the positive flow of fluid direction.Due to the flap cambered surface to
The front protrusion of fluid flowing, when the flap described in the positive fluid impact, fluid circles round in cambered surface, facilitates valve
It is opened under smaller flow.
8. swing check valve provided by the invention, it is arranged at the position that the Vertical Channel is connected with the horizontal channel
There is the streamline portion being recessed outward, the streamline portion corresponds to the front of swaying direction of the rocking bar under positive fluid matasomatism.Institute
The screw of the valve plate can be accommodated by stating recessed portion, prevented the screw from impacting the valve inner, damaged to valve body；And
And streamline portion to increase valve inner space.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the swing check valve provided in one embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the swing check valve provided in one embodiment of the present invention；
Fig. 3 is that the dynamic position of magnetic pole indicator is opened with described close to induction type limit when the swing check valve is closed
Positional relationship between pass；
Fig. 4 is that the dynamic position of magnetic pole indicator is opened with described close to induction type limit when the swing check valve is opened
Positional relationship between pass；
Description of symbols:
1- valve body；2- seat ring；3- pin shaft；4- moves position of magnetic pole indicator；The first permanent magnet of 421-；The second permanent magnetism of 422-
Body；41- connecting rod；42- permanent magnet disk；5- is close to induction type limit switch；51- connecting plate；52- position indicator；5221-
One limit switch；The second limit switch of 5222-；6- rocking bar；7- flap；8- plug screw；9- pin sleeve；10- fastener；11- key；
12- streamline portion；13- boss；14- pin shaft cover board.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Embodiment 1
The present embodiment provides a kind of swing check valves, comprising: valve body 1 is equipped with inside the valve body 1 and to flow for fluid
Horizontal channel and Vertical Channel, the position adjacent with the Vertical Channel is equipped with seat ring 2 on the horizontal channel inner wall；Valve
Valve component, the flap component are rotatably connected in the Vertical Channel by pin shaft 3, and the flap component can be just
The seat ring 2 is left under the action of to fluid, opens the check-valves, or institute is bonded under counter fluid and self gravitation effect
Seat ring 2 is stated, the check-valves is closed；Dynamic position of magnetic pole indicator, is arranged in one end of the pin shaft 3, with the flap component
It rotates synchronously, the first permanent magnet 421 and the second permanent magnet 422 is installed；Close to induction type limit switch 5, it is fixed at dynamic
The front of position of magnetic pole indicator is provided with the first limit switch 5221 and the second limit switch 5222；The flap
When component turns to closure of check ring position, first permanent magnet 421 is only corresponding with the first limit switch 5221 to make described
One limit switch 5221 generates electromagnetic signal, when the flap component turns to check-valves open position, second permanent magnet
422 corresponding with second limit switch 5222 so that second limit switch 5222 generates electromagnetic signal.
Above-mentioned check-valves, since two permanent magnets and two contacts correspond, as long as pre-setting between them
One-to-one relationship, it is described all to generate single signal close to induction type limit switch when check-valves opens and closes,
It not will cause the confusion of output signal, can accurately determine that valve is on or off.
Specifically, the electric signal that first limit switch 5221 generates corresponds to the position of the closure of check ring, described
The electric signal that second limit switch 5222 generates corresponds to the position that the check-valves is opened.
As preferred embodiment, the pin shaft 3 is perpendicular to the vertical plane of the Vertical Channel, and setting is described vertical
In channel；7 component of flap includes: rocking bar 6, and one end is sleeved and fixed on the pin shaft 3；And flap 7, it is connected to institute
It states on one end that the separate and pin shaft 3 of rocking bar 6 is connect.
Specifically, under the action of positive fluid, the flap 7 drives the rocking bar 6 to swing, while the rocking bar
6 drive the pin shaft 3 to rotate synchronously, and open check-valves；Under the action of counter fluid is with 7 self gravity of flap, 7 weight of flap
It is newly fitted on seat ring 2, completes the closure to check (non-return) valve.
As preferred embodiment, the dynamic position of magnetic pole indicator includes connecting rod 41, is set through 1 side wall of valve body
It sets, one end is connected on the pin shaft 3 to be rotated synchronously with the pin shaft 3, and the other end is extend out to outside the valve body 1；Permanent magnetism
Body disk 42 is arranged outside the valve body 1, is fixed on one end outside the stretching valve body 1 of the connecting rod 41, in
It is fixedly installed with first permanent magnet 421 and second permanent magnet 422.
Specifically, the connecting rod 41 is moved synchronously with the pin shaft 3, and the pin shaft 3 is rotated synchronously with the flap 7, by
It is fixed on the end of the connecting rod 41 in the permanent magnet disk 42, so when the flap 7 rotates, the permanent magnet
Disk 42 moves synchronously together, and the first permanent magnet 421 and the second permanent magnet 422 are fixed inside the permanent magnet disk 42 can rotate
To the first limit switch 5221 for issuing shutdown signal, and the second limit switch 5222 for issuing opening signal
Place.
Above-mentioned check-valves connects permanent magnet disk 42 since connecting rod 41 stretches out the outside of the valve body 1, it can be with
In disposed outside the first permanent magnet 421 and the second permanent magnet 422 of valve body, avoids when being arranged inside valve body 1, cause valve body
1 inner space is crowded；Also, the first permanent magnet 421 and the second permanent magnet 422 are each attached on permanent magnet disk 42, in connecting rod
When 41 linkage permanent magnet turntable 42, the first permanent magnet 421 is identical with the rotational angle of the second permanent magnet 422, thus in design,
As long as according to pre-designed first permanent magnet in the relative position of the first limit switch and the second limit switch and the second permanent magnet
Relative position, so that it may guarantee during rotating permanent magnet disk 42 first permanent magnet only contacted with the first limit switch,
Second permanent magnet is only contacted with the second limit switch, facilitates realization technical solution of the present invention.
It is described to include connecting plate 51 close to induction type limit switch 5 as preferred embodiment, it is arranged in the valve body
Outside 1, connecting cavity is constituted between a part of outer wall of the valve body 1；Position indicator 52 is mounted on the connecting plate 51
On, there is the induction end being located inside the connecting cavity, first limit switch 5221 and described is set in the induction end
Second limit switch 5222.
When first limit switch 5221 and the first permanent magnet 421 act on, second limit switch 5222 and institute
Stating the second permanent magnet 422 will not incude, similarly, when second limit switch 5222 and the effect of the second permanent magnet 422,
First limit switch 5221 will not incude with first permanent magnet 421.This induction mode can ensure to generate
Inductive signal it is single, clear, accurately instruct the opened and closed positions of flap 7.
The outside of valve body 1 is integrally located at close to induction type limit switch 5, consequently facilitating installation, and it is possible to alleviate valve body
Internal crowded state, in addition, being convenient for its state of external observation；Its induction end is located in connecting cavity, can protect in induction end
The accuracy of the induction of first limit switch and the second limit switch, avoids external interference.
As preferred embodiment, the outer wall of the valve body 1 is equipped with the chamber being recessed inwardly, and the chamber has court
To the opening of the position indicator 52, the opening cover is buckled with the plug screw 8 for sealing the opening, and the connecting rod 41 is stretched
It is located in the chamber to one end outside valve body 1 out, the setting of permanent magnet disk 42 is in the cavity.
By forming the chamber, for installing permanent magnet disk 42, it is ensured that be located on the permanent magnet disk 42
The first permanent magnet 421 and the second permanent magnet 422 not by external interference, improve the accuracy of finally formed signal；Also, it is logical
Crossing plug screw 8 and sealing the opening can make valve body 1 be sealed by the perforative part of connecting rod, prevent gas along the connecting rod and institute
The gap stated between body wall enters valve inner.
Specifically, " c-type " sealing ring is equipped between external plug screw 8 and valve body 1, to prevent ambient atmos from passing through plug screw
8 enter the inside of valve body 1；When necessary, plug screw 8 can weld together with valve body 1, improve the sealing performance of valve body.
As preferred embodiment, extends in the Vertical Channel of the lower section of the pin shaft 3 and be parallel to the water
The boss 13 in flat channel, the both ends of the pin shaft 3 are connected with pin sleeve 9, and the pin shaft 3 can rotate in the pin sleeve 9,
It is equipped with pin shaft cover board 14 above the pin sleeve 9, is connected between the pin shaft cover board 14 and the boss 13 by fastener 10
Together.It prevents the valve plate from driving the pin shaft 3 during rotation, avoids the pin shaft 3 from shaking on valve body, make
It is steady to obtain 7 moving process of flap.
Specifically, the both ends of the pin shaft 3 are arranged in the pin sleeve 9, and the width of the pin shaft cover board 14 is greater than described
The diameter of pin sleeve 9,10 upper end of fastener connect the pin shaft cover board 14, and lower end connects the left and right sides of pin sleeve 9
Boss is clipped in the pin sleeve 9 between the pin shaft cover board 14 and the boss by fastener 10.
As preferred embodiment, connected between the pin shaft 3 and the rocking bar 6 by key 11.Due to 6 one end of rocking bar
It is connected with flap 7, the pin shaft 3 is rotated synchronously with the permanent magnet disk 42, can guarantee the permanent magnetism by the connection of key 11
Body disk 42 is moved synchronously with the flap 7, it is ensured that the permanent magnet disk 42 can accurately issue the position letter of the flap 7
Number.
It as preferred embodiment, is connected by screw between the rocking bar 6 and flap 7, the flap 7 is cambered surface knot
Structure, front protrusion of the globoidal structure towards the positive flow of fluid direction.Since the cambered surface of the flap 7 is towards described
The front protrusion of fluid flowing, when the flap 7 described in the positive fluid impact, fluid circles round in cambered surface, facilitate valve compared with
It is opened under small flow.Specifically, when the check (non-return) valve is closed, the both ends of the flap 7 are fitted on the seat ring 2, at this time
Sealing surface is formed between flap 7 and seat ring 2.
As preferred embodiment, it is provided at the position that the Vertical Channel is connected with the horizontal channel recessed outward
Sunken streamline portion 12, the front of swaying direction of the corresponding rocking bar 6 in the streamline portion 12 under positive fluid matasomatism.It is described recessed
Concave portion can accommodate the screw of the valve plate, prevent the screw from impacting inside the valve body 1, damage to valve body 1；And
Streamline portion to increase valve inner space.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (9)
1. a kind of swing check valve characterized by comprising
Valve body (1), the valve body (1) is internal to be equipped with for the flat channel of fluid flowing water and Vertical Channel, the horizontal channel
The position adjacent with the Vertical Channel is equipped with seat ring (2) on inner wall；
Flap component, the flap component are rotatably connected in the Vertical Channel by pin shaft (3), the flap component
The seat ring (2) can be left under the action of positive fluid, open the check-valves, or make in counter fluid and self gravity
With the lower fitting seat ring (2), the check-valves is closed；
Dynamic position of magnetic pole indicator, setting are rotated in one end of the pin shaft (3) with the flap component synchronization, are equipped with the
One permanent magnet (421) and the second permanent magnet (422)；
Close to induction type limit switch (5), it is fixed at the front of dynamic position of magnetic pole indicator, is provided with the first limit
Bit switch (5221) and the second limit switch (5222)；
When the flap component turns to closure of check ring position, first permanent magnet (421) and the first limit switch
(5221) corresponding that first limit switch (5221) is made to generate electromagnetic signal, the flap component turns to check-valves open position
When setting, second permanent magnet (422) is only corresponding with the second limit switch (5222) so that second limit switch
(5222) electromagnetic signal is generated.
2. check-valves according to claim 1, which is characterized in that
The pin shaft (3) perpendicular to the Vertical Channel vertical plane, and be arranged in the Vertical Channel；The flap component
Include:
Rocking bar (6), one end are sleeved and fixed on the pin shaft (3)；And
Flap (7) is connected on one end that the separate and pin shaft (3) of the rocking bar (6) is connect.
3. check-valves according to claim 2, which is characterized in that the dynamic position of magnetic pole indicator includes
Connecting rod (41) is arranged through the valve body (1) side wall, and one end is connected on the pin shaft (3) same with the pin shaft (3)
Step rotation, it is external that the other end extend out to the valve body (1)；
Permanent magnet disk (42), setting is external in the valve body (1), is fixed on the stretching valve body (1) of the connecting rod (41)
On external one end, it is inside fixedly installed with first permanent magnet (421) and second permanent magnet (422).
4. check-valves according to claim 3, which is characterized in that include close to induction type limit switch (5)
Connecting plate (51), setting is external in the valve body (1), constitutes connecting cavity between a part of outer wall of the valve body (1)；
Position indicator (52) is mounted on the connecting plate (51), has the induction end being located inside the connecting cavity, described
First limit switch (5221) and second limit switch (5222) are set in induction end.
5. check-valves according to claim 4, which is characterized in that the outer wall of the valve body (1) is equipped with and is recessed inwardly
Chamber, the chamber have the opening towards the position indicator (52), and the opening cover is buckled with the sealing opening
Plug screw (8), the external one end of valve body (1) that extend out to of the connecting rod (41) is located in the chamber, the permanent magnet disk
(42) it is arranged in the cavity.
6. check-valves according to claim 5, which is characterized in that be located at the Vertical Channel of the lower section of the pin shaft (3)
Upper to extend the boss (13) for being parallel to the horizontal channel, the both ends of the pin shaft (3) are connected with pin sleeve (9), the pin
Axis (3) can rotate in the pin sleeve (9), be equipped with pin shaft cover board (14) above the pin sleeve (9), the pin shaft cover board
(14) it is linked together between the boss (13) by fastener (10).
7. check-valves according to claim 6, which is characterized in that pass through between the pin shaft (3) and the rocking bar (6)
Key (11) connection.
8. check-valves according to claim 7, which is characterized in that pass through screw between the rocking bar (6) and flap (7)
Connection, the flap (7) are globoidal structure, front protrusion of the globoidal structure towards the positive flow of fluid direction.
9. check-valves according to claim 8, which is characterized in that the Vertical Channel is connected with the horizontal channel
The streamline portion (12) being recessed outward is provided at position, the corresponding rocking bar (6) of the streamline portion (12) is in positive fluid matasomatism
Under swaying direction front.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610263932.4A CN105715834B (en) | 2016-04-26 | 2016-04-26 | A kind of swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610263932.4A CN105715834B (en) | 2016-04-26 | 2016-04-26 | A kind of swing check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105715834A CN105715834A (en) | 2016-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107606297B (en) * | 2017-09-06 | 2020-01-21 | 武汉钢铁集团气体有限责任公司 | Pneumatic valve system and air purification device |
| CN108397579A (en) * | 2018-02-24 | 2018-08-14 | 江苏盐电阀门有限公司 | A kind of axial flow type check valve |
| CN108488399A (en) * | 2018-02-24 | 2018-09-04 | 江苏盐电阀门有限公司 | A kind of anti-valve rod flies out valve |
| EP3874188A4 (en) * | 2018-10-31 | 2022-03-23 | MCC Holdings, Inc. d/b/a Crane ChemPharma & Energy | Method for manufacturing a block forged swing check valve body with a fully encapsulated seat ring |
| CN110081212A (en) * | 2019-04-26 | 2019-08-02 | 江苏圣泰阀门有限公司 | A kind of high-pressure sealing check-valves |
| CN110725977A (en) * | 2019-10-26 | 2020-01-24 | 五洲阀门股份有限公司 | Actuator check valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4353390A (en) * | 1979-12-06 | 1982-10-12 | Anchor/Darling Valve Company | Swing check valve with internally balanced disc |
| JPS61123276U (en) * | 1985-01-23 | 1986-08-02 | ||
| JPH0723751B2 (en) * | 1990-11-30 | 1995-03-15 | 東京電力株式会社 | Swing check valve disc opening detection device |
| JP4616418B1 (en) * | 2010-06-11 | 2011-01-19 | 千住スプリンクラー株式会社 | Flowing water detector |
| CN102734506A (en) * | 2011-04-12 | 2012-10-17 | 大连大高阀门股份有限公司 | Swing check valve of nuclear first-level forged steel belt position indicator |
| CN204372314U (en) * | 2014-12-22 | 2015-06-03 | 中核苏阀科技实业股份有限公司 | Safety check non-contact switch indicating structure |
| CN104806793B (en) * | 2015-04-01 | 2017-04-26 | 上海阀门厂股份有限公司 | Low drop-out starting check valve |
| CN204628780U (en) * | 2015-05-11 | 2015-09-09 | 南京年代科技有限公司 | Safety check flap position display unit |
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