CN105822800A

CN105822800A - Check valve

Info

Publication number: CN105822800A
Application number: CN201610342615.1A
Authority: CN
Inventors: 杨思榕
Original assignee: 杨思榕
Current assignee: Taizhou Aidi Xisheng Big HVAC Technology Co., Ltd.
Priority date: 2016-05-23
Filing date: 2016-05-23
Publication date: 2016-08-03
Anticipated expiration: 2036-05-23
Also published as: CN105822800B

Abstract

The invention discloses a check valve which comprises a valve seat provided by with an inflow channel and an outflow channel, wherein a valve shaft is hinged onto the valve seat; a rocker arm is in pin joint with the valve shaft; and a valve plate is fixed on the rocker arm. The check valve is characterized in that when the valve plate swings down along with the rocker arm and reaches a vertical state, an elastic sealing body which can be squeezed into the inflow channel to form a seal is arranged at the end, relative to the inflow end, of the valve plate; the elastic sealing body is in floating connection with the valve body in both the axial direction and the radial direction of the inflow channel; and by virtue of the floating connection between the valve plate and the elastic sealing body, the elastic sealing body can be more automatically and flexibly squeezed into the inflow channel, the problem that the elastic sealing body is seriously abraded due to excessive unilateral or partial stress can be solved, the service life of the elastic sealing body can be prolonged, and the practical effect of the elastic sealing body can be improved.

Description

A kind of check-valves

Technical field

The present invention relates to a kind of valve body, more specifically, it relates to a kind of check-valves.

Background technology

At present, known swing type soft-sealing check valve includes valve body, is provided with the admission chamber being interconnected and goes out sap cavity, be hinged with rocking bar in valve body in valve body, connect on rocking bar and have and admission chamber and the valve plate going out sap cavity blocking-up can be coated with elastic sealing layer on the outer surface of valve plate；The end face of valve plate be the connecting end surface for being connected with rocking bar, other end be seal face.Sealing principle is that valve plate bearing pin in valve body rotates, the inner port of admission chamber is blocked by the seal face of valve plate, the major way realizing this effect of non-return is, by valve plate, the port of admission chamber is sealed realization, and the port of admission chamber is sealed this technique effect by valve plate to be realized, the mainly weight by flap self makes flap be in the port of admission chamber in the bottom of rocking bar, then by admission chamber section port being sealed from going out the elastic sealing layer that the fluid pressure that sap cavity reverse flow comes realizes valve plate, if but if less from going out the liquid pressure that sap cavity reverse flow comes, valve plate pressure experienced then can be caused inadequate, elastic sealing layer cannot be realized seal real by the port of admission chamber and cause leakage.

For this problem; prior art uses and at valve plate, the elastic sealed body of one piece of evagination is set relative to the port side of admission chamber; hypoelasticity seal just can automatically insert the port of admission chamber after admission chamber direction rotates at valve plate; thus realize the effect that non-return seals; but after used a period of time; elastic sealed body usually can be excessive and too fast abrasion occur due to unilateral stress during filling in the port of admission chamber, problem that is poorly sealed real and that reveal finally occurs.

Summary of the invention

The deficiency existed for prior art, it is an object of the invention to provide the check-valves in a kind of elastic sealed body service life that can extend on valve plate.

For achieving the above object, the technical scheme is that a kind of check-valves, including with influent stream road and the valve seat going out runner, it is hinged with valve shaft on described valve seat, this valve shaft is articulated with rocking arm; be fixed with valve plate on rocking arm; it is characterized in that; when valve plate is along with the rocking arm bottom to vertical state; described valve plate is provided with relative to the one end in influent stream road can be filled in influent stream road and form the elastic sealed body sealed, and this elastic sealed body and valve plate are floating connection along axial direction and the radial direction in influent stream road.

nullBy using technique scheme，It is fixed on rocking arm during due to valve plate，Thus will rotate at the drive lower valve plate of rocking arm，Thus drive elastic sealed body also to rotate，Valve plate turns to influent stream road when，Elastic sealed body will come into contact with the port in influent stream road，And when valve plate is under vertical state，Elastic sealed body will fill in the port in influent stream road，Port in elastic sealed body touching influent stream road changes between vertical state to valve plate，Valve plate is while providing thrust for elastic sealed body，On the other hand regulation automatically will be made due to floating connection in the elastic sealed body of valve plate，So that the inner wall shape that elastic sealed body is in influent stream road realizes being directed into influent stream road under limiting，Avoid again by valve plate to elastic sealed body interfering movement on circumferentially rotating，Thus prevent one side or local from occurring that the problem that concentrated wear aggravates occurs in excessive compression with the port in influent stream road，Improve the service life of elastic sealed body.

It is optimized for further: connected by the first spring between described valve plate and elastic sealed body.

By using technique scheme, the valve plate connected by the first spring and seal, when elastic sealed body enters into influent stream road when, first spring can not only provide the propulsive force pushing influent stream road to for elastic sealed body, and after elastic sealed body enters into influent stream road, when valve plate continues to rotate under the drive of rocking arm, first spring can and elastic sealed body between produce radial deformation, avoid the occurrence of valve plate is rotated further the motion generation interference that elastic sealed body enters influent stream road, and there is no the local pressure that will reduce between elastic sealed body and influent stream road after this interference, avoid that elastic sealed body concentrated wear is excessive and the poorly sealed real problem that produces.

It is optimized for further: described first spring is circumferentially divided equally and is distributed between valve plate and elastic sealed body.

By using technique scheme, first spring is arranged to the form of even circumferential distribution, make the attachment force between elastic sealed body and valve plate stable and uniform, thus the power that the first spring after elastic sealed body enters into influent stream road is provided as elastic sealed body also uniformly will reduce and the problem that between elastic sealed body and influent stream road, local force is excessive occur.

It is optimized for further: the side of described valve plate relative resilient seal is fixed with a support bar, one end of this support bar relative resilient seal is provided with rocker piece, described elastic sealed body is provided with the volume flotation chamber more than rocker piece, and elastic sealed body is provided with relative to the side of valve plate, and diameter is bigger than the shank diameter of support bar and resigning hole with flotation chamber UNICOM, this support bar is through resigning hole and rocker piece is located in flotation chamber, and rocker piece realizes floating connection with the inwall of flotation chamber by the second spring.

By using technique scheme, valve plate and elastic sealed body will be connected by support bar, make can to have between elastic sealed body and valve plate and certain partially move displacement, by being arranged in flotation chamber by rocker piece, and rocker piece and flotation chamber realize floating connection by being arranged on the second spring of rocker piece surrounding；When valve plate pushes elastic sealed body entrance influent stream road by support bar when, if elastic sealed body the most just port to influent stream road, but it is the most on the upper side, make the upper edge port higher than influent stream road of elastic sealed body, then rocker piece can be supported the effect of bar, motion under being partial in flotation chamber, now the second spring will pull elastic sealed body to offset downward so that the position of elastic sealed body is corrected alignment influent stream road, avoid the occurrence of and produce sharp worn problem owing to the position of elastic sealed body Yu influent stream road is inaccurate, improve using effect and the service life of elastic sealed body；And on this basis, by arranging the most evenly spaced first spring between elastic sealed body and valve plate, by improving the mutual stability between elastic sealed body and valve plate, prevent the random dancing of elastic sealed body.

Being optimized for further: the termination of described support bar Relative Floating block is set to bulb, and rocker piece is provided with ball seat chamber, this bulb is located at ball seat intracavity and is realized ball pivot connection.

By using technique scheme, when rocker piece occur under the effect of support bar in flotation chamber when cheaply floating, by by the second spring to the junction of support bar and rocker piece torque influence in various degree, and by the way of support bar and rocker piece are arranged to ball pivot connection, then when rocker piece is by the torsion of the second spring, can automatically make the rotation with support bar, reduce moment of torsion stress concentration between rocker piece and support bar, improve service life.

It is optimized for further: the mouth limit of the port of described influent stream road relative resilient seal is provided with the first taper chamfering, and elastic sealed body is provided with the second taper chamfering relative to the edge in influent stream road.

By using technique scheme, by the first taper chamfering arranged in the port in influent stream road and the second taper chamfering being arranged on elastic sealed body, making to play guide effect during elastic sealed body fills in influent stream road, convenient elastic sealed body is filled in influent stream road more smoothly.

Present invention advantage compared with prior art is: the floating connection mode between valve plate and elastic sealed body, improve elastic sealed body automatically and flexibly filling in during filling in influent stream road, prevent the one side of elastic sealed body or local pressure is excessive and the problem of serious wear, life-span and practical function when of adding elastic sealed body.

Accompanying drawing explanation

Fig. 1 is the check-valves overall schematic of the present embodiment；

Fig. 2 is the check-valves sectional view of the present embodiment；

Fig. 3 is the decomposing schematic representation of the valve plate in the present embodiment and elastic sealed body；

Fig. 4 is the decomposing schematic representation of the elastic sealed body in the present embodiment and internal float motion block.

In figure, 1, valve seat；11, influent stream road；111, the first taper chamfering；12, runner is gone out；13, valve pocket；2, valve gap；3, valve shaft；4, rocking arm；5, valve plate；6, elastic sealed body；61, the second taper chamfering；62, flotation chamber；63, resigning hole；7, ball pin；71, bulb；81, the first spring；82, the second spring；9, rocker piece；91, ball seat chamber.

Detailed description of the invention

Being described in further detail invention below in conjunction with the accompanying drawings and by specific embodiment, following example are illustrative, are not determinate protection scope of the present invention.

Embodiment, a kind of check-valves, see accompanying drawing 1-2, valve seat 1 it is provided with influent stream road 11 and goes out runner 12, in influent stream road 11 with go out there is between runner 12 valve pocket 13, valve pocket 13 position of valve body being provided with the valve neck with flange, valve neck connects valve gap 2, being hinged with valve shaft 3 at valve neck, valve shaft 3 is articulated with Rocker arm 4, and Rocker arm 4 is fixed with valve plate 5；

See accompanying drawing 3 and 4 and combine accompanying drawing 2, connection exploded view for valve plate 5 and elastic sealed body 6, valve plate 5 is fixed with support bar, support bar makes rocker piece 9 be arranged in flotation chamber 62 after the resigning hole 63 being arranged on elastic sealed body 6, the end of support bar is provided with bulb 71, being provided with the ball seat chamber 91 coordinated with bulb 71 on rocker piece 9 and realize ball pivot and is connected, the first spring 81 is that axle center even circumferential is distributed around support bar, is connected between elastic sealed body 6 and valve plate 5；It is provided with the second spring 82 between surrounding and the flotation chamber 62 of rocker piece 9.

Seeing accompanying drawing 2, when valve plate 5 is under hang, elastic sealed body 6 will fill in the port in influent stream road 11；And so that elastic sealed body 6 is more prone to fill in the port in influent stream road 11, the one end in the relative influent stream road 11 of elastic sealed body 6 is provided with the second taper chamfering 61, inner port in influent stream road 11 is provided with the first taper chamfering 111, certainly the most here can also the relative one end in influent stream road 11 of elastic sealed body 6, influent stream road 11 inner port at be respectively provided with rounding, also can realize guide effect.

When check-valves works, when liquid flows into from direction, influent stream road 11, the elastic sealed body 6 filled in influent stream road 11 is gone out by liquid, and valve plate 5 is rotated up under the restriction of Rocker arm 4, and elastic sealed body 6 will persistently open influent stream road 11, and liquid will normally circulate；When liquid is in time going out the inflow of runner 12 direction, valve plate 5 will rotate towards direction, influent stream road 11 and elastic sealed body 6 will fill in influent stream road 11 under the pressure of self gravitation and liquid, during filling in, owing to passing through floating connection between elastic sealed body 6 and valve plate 5, extruding between the port in elastic sealed body 6 and influent stream road 11 will be automatically adjusted, the one side of elastic sealed body 6 will not be made or local compression is excessive and aggravation of wearing and tearing, increase the service life.

The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-described embodiment, and all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that, for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be regarded as protection scope of the present invention.

Claims

1. a check-valves, including with influent stream road (11) and the valve seat (1) that goes out runner (12), valve shaft (3) it is hinged with on described valve seat (1), this valve shaft (3) is articulated with rocking arm (4), valve plate (5) it is fixed with on rocking arm (4), it is characterized in that, when valve plate (5) along with rocking arm (4) bottom to vertical state time, the one end in described valve plate (5) influent stream road (11) relatively is provided with can be filled in influent stream road (11) and form the elastic sealed body (6) sealed, this elastic sealed body (6) and valve plate (5) are floating connection along axial direction and the radial direction of influent stream road (11).

A kind of check-valves the most according to claim 1, it is characterised in that connected by the first spring (81) between described valve plate (5) and elastic sealed body (6).

A kind of check-valves the most according to claim 2, it is characterised in that described first spring (81) is circumferentially divided equally and is distributed between valve plate (5) and elastic sealed body (6).

4. according to a kind of check-valves described in claim 1 or 3, it is characterized in that, the side of described valve plate (5) relative resilient seal (6) is fixed with a support bar, one end of this support bar relative resilient seal (6) is provided with rocker piece (9), described elastic sealed body (6) is provided with the volume flotation chamber (62) more than rocker piece (9), and the side of elastic sealed body (6) relatively valve plate (5) is provided with, and diameter is bigger than the shank diameter of support bar and resigning hole (63) with flotation chamber (62) UNICOM, this support bar is through resigning hole (63) and rocker piece (9) is located in flotation chamber (62), rocker piece (9) realizes floating connection with the inwall of flotation chamber (62) by the second spring (82).

A kind of check-valves the most according to claim 4, it is characterized in that, the termination of described support bar Relative Floating block (9) is set to bulb (71), rocker piece (9) is provided with ball seat chamber (91), and this bulb (71) realizes ball pivot and connects in being located at ball seat chamber (91).

A kind of check-valves the most according to claim 5, it is characterized in that, the port limit of described influent stream road (11) relative resilient seal (6) is provided with the first taper chamfering (111), and the edge in elastic sealed body (6) influent stream road (11) relatively is provided with the second taper chamfering (61).