CN209622069U - Cold air regulating valve - Google Patents

Abstract

The utility model relates to a kind of cold air regulating valves comprising: valve body has the fluid channel that outlet is extended to from import；Butterfly plate, it is arranged in the fluid channel, and the fluid channel that can be rotated between open and closed positions to selectively allow for fluid to pass through the valve body, and it is embedded the throttle structure at valve outlet, the throttle structure includes the fixed part being circumferentially arranged and the channel being arranged between fixed part and choke block, and the rear side of the opening angle of butterfly plate is arranged in the choke block, the throttling plate surface is spaced apart several throttle orifices, the outer surface of the throttle structure is lower than the outer surface of valve outlet, cavitation phenomenon and noise problem are solved in the case where valve body entire length can not be changed, in addition the design of throttle orifice is used, it can be under smaller flow, the preferably regulation performance of optimization valve.

Description

Cold air regulating valve

Technical field

The utility model relates to a kind of flow control apparatus, and in particular to a kind of cold air regulating valve.

Background technique

Butterfly valve is commonly used to control various fluids, the i.e. flowing of liquid stream or air-flow.Butterfly valve be used to throttle fluid flowing and Unlatching/closing application.The butterfly valve on basis includes with valve body and being pivotably mounted on the intracorporal butterfly valve blade of the valve.

When the butterfly valve that fluid is opened by part, the fluid undergoes significant pressure drop, for butterfly valve, one of base This problem of is exactly that the pressure drop is intended to cause cavitation phenomenon and damage and gas supply in the liquid feed device that causes with cavitation phenomenon Noise in device.

And it is existing aiming at the problem that butterfly valve noise reduction, low vibration design or going out in entire valve body perhaps are carried out to butterfly plate Several drainage troughs are circumferentially arranged in feed channel, by fluid flow point are multiple jets using drainage trough, this is for cavitation phenomenon and noise Problem also plays the role of positive, but when the point is butterfly plate full open, does not have any effect for flow control.

In addition it goes to reduce solution cavitation phenomenon by the way of drainage trough and noise problem, the drainage trough needs certain length Degree, and the length that the design of drainage trough will lead to entire valve body becomes larger, and causes the installation difficulty of certain occasions larger, and cannot fit For all places.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of cold air regulating valves.

To achieve the above object, the utility model provides following technical solution: a kind of cold air regulating valve comprising:

Valve body has the fluid channel that outlet is extended to from import；

Butterfly plate is arranged in the fluid channel, and can be rotated between open and closed positions selectively to permit Perhaps fluid passes through the fluid channel of the valve body, and

The throttle structure being embedded at valve outlet, the throttle structure include that the fixed part being circumferentially arranged and setting exist Channel and choke block between fixed part, and the rear side of the opening angle of butterfly plate, the choke block is arranged in the choke block Surface is spaced apart several throttle orifices, and the outer surface of the throttle structure is lower than the outer surface of valve outlet.

The valve body inner circumferential is equipped with valve seat, sealing ring is arranged on the valve seat, the throttle structure is embedded in valve body It is interior and be pressed against on the sealing ring.

The sealing ring is the stainless steel substrates and graphite flake being stacked.

The throttle structure is detachably connected with the valve body.

The aisle spare of the throttle structure is greater than the area of choke block.

The butterfly plate is circumferentially with sealing surface.

When the butterfly plate is in the closed position, the sealing surface and sealing ring constitute wedge surface sealing and cooperate.

For the choke block when the butterfly plate is from opening to closing, the throttle orifice of the choke block is sequentially exposed to the stream opened To control the speed that fluid passes through before body channel.

The throttle orifice ecto-entad increases setting.

The utility model has the beneficial effects that directly by the embedded setting of throttle structure in valve body, and it is placed in butterfly plate unlatching The rear side in direction solves cavitation phenomenon and noise problem in the case where capable of not changing valve body entire length, in addition using section The design of discharge orifice can preferably optimize the regulation performance of valve under smaller flow.

Detailed description of the invention

Fig. 1 is the main view of the utility model.

Fig. 2 is the axial sectional view of the utility model.

Fig. 3 is the enlarged diagram at the I in Fig. 2.

Fig. 4 is the transverse sectional view of the utility model.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, fall within the protection scope of the utility model.

It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.

In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. should do broad sense reason Solution, for example, " fixation " may be a fixed connection, may be a detachable connection, or integral；It can be mechanical connection, it can also To be electrical connection；It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary Or the interaction relationship of two elements, unless otherwise restricted clearly.It for the ordinary skill in the art, can be with The concrete meaning of above-mentioned term in the present invention is understood as the case may be.

In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and cannot manage Solution is its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " the One ", the feature of " second " can explicitly or implicitly include at least one of the features.In addition, the skill between each embodiment Art scheme can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when technical solution It will be understood that the combination of this technical solution is not present in conjunction with there is conflicting or cannot achieve when, also not in the utility model It is required that protection scope within.

The utility model provides a kind of cold air regulating valve, is mounted on effuser and flows between pipe, for controlling The flow velocity of fluid comprising:

Valve body 1 has the fluid channel that outlet is extended to from import, and import is connect with effuser, outlet and inflow Pipe connection, uses as fluid channel, and valve seat is arranged on the inside of valve body, and the valve seat and valve body are integrally formed, are made of metal, can To realize zero leakage, while all-metal seat design also ensures long-term sealing performance, and sealing ring 4 is arranged on valve seat, The sealing ring, the sealing ring are the stainless steel substrates and graphite flake being stacked；

Butterfly plate 2 is arranged in the fluid channel, and can be rotated between open and closed positions selectively to permit Perhaps fluid passes through the fluid channel of the valve body, and butterfly plate is linked with valve rod, and the valve rod 3 is arranged across valve body, the valve Bracket 7 is arranged in body upper end, operating mechanism is mounted on bracket, which is linked with valve rod, wherein valve rod 7 Define axis, butterfly plate can the front side direction around rear direction of the axis to Fig. 1 or to Fig. 1 rotate, realize to passing through stream The adjusting of the fluid flow in body channel.

In addition the circumferential setting sealing surface 8 of butterfly plate, the sealing surface are fixed on the circumferential direction of butterfly plate by the way of built-up welding, this is close The tilt angle of cover and the opening direction of butterfly plate are on the contrary, enable butterfly plate to constitute wedge surface with the sealing ring of valve body in closure Sealing cooperation, is completely dependent on metal sealing.

It is wherein sealed between butterfly plate and valve seat by mechanical force, rather than medium differential pressure is still kept two-way even if frequently switching on Permanent seal, and leakproofness not thermal expansion effects.

The throttle structure being embedded at valve outlet, the throttle structure include the fixed part 5 being circumferentially arranged and setting Channel 11 and choke block 10 between fixed part 5, while the area of choke block is less than the area in channel, and choke block On throttle orifice successively increase from the outside to the inside, which refers to valve body section the center point, and the choke block is in the butterfly When plate is from opening to closing, what the throttle orifice of the choke block was passed through before being sequentially exposed to the fluid channel opened with controlling fluid Speed.And utilize orifice design, can reduce valve maximum stream flow (pipeline drift diameter it has been specified that in the case where, flow mistake The small valve opening that will lead to is too small, can reduce valve maximum stream flow after increasing restricting orifice, increase valve opening).And it is described The rear side of the opening angle of butterfly plate is arranged in choke block, and the throttling plate surface is spaced apart several throttle orifices 9, the throttle butterfly The outer surface of structure is lower than the outer surface of valve outlet.

Using throttle orifice can optimize under the small flow of valve regulation performance (under identical flow, the valve with restricting orifice Door can be bigger than the valve opening of not perforated plate, and degree of regulation can be higher).

The valve body inner circumferential is equipped with valve seat, sealing ring is arranged on the valve seat, the throttle structure is embedded in valve body Interior and be pressed against on the sealing ring, the fixed part of the throttle structure can oppress sealing ring on valve seat, keep it solid It is fixed.

The throttle structure is detachably connected with the valve body, it can is replaced to throttle structure, is changed different rulers The throttle structure of very little throttle orifice can adjust replacement according to the actual situation.

In addition throttle structure is embedded in valve body completely, not will cause the change in size of valve body, can guarantee valve body Size, by increase external connection flange can satisfy demand of the different places to the valve body of different-thickness.

Embodiment is not construed as limitations of the present invention, but changes made by any spirit based on the utility model Into should all be within the protection scope of the utility model.

Claims (9)

1. a kind of cold air regulating valve, it is characterised in that: comprising:

Valve body has the fluid channel that outlet is extended to from import；

Butterfly plate is arranged in the fluid channel, and can be rotated between open and closed positions to selectively allow for flowing Body passes through the fluid channel of the valve body, and

The throttle structure being embedded at valve outlet, the throttle structure include the fixed part being circumferentially arranged and are arranged in fixation Channel and choke block between portion, the choke block are arranged in the rear side of the opening angle of butterfly plate, between the throttling plate surface Every being distributed several throttle orifices, the outer surface of the throttle structure is lower than the outer surface of valve outlet.

2. cold air regulating valve according to claim 1, it is characterised in that: the valve body inner circumferential is equipped with valve seat, institute It states and sealing ring is set on valve seat, the throttle structure is embedded in valve body and is pressed against on the sealing ring.

3. cold air regulating valve according to claim 2, it is characterised in that: the sealing ring is the stainless steel being stacked Piece and graphite flake.

4. cold air regulating valve according to claim 1, it is characterised in that: the throttle structure and the valve body are detachable Connection.

5. cold air regulating valve according to claim 1, it is characterised in that: the aisle spare of the throttle structure is greater than section The area of flowing plate.

6. cold air regulating valve according to claim 2 or 3, it is characterised in that: the butterfly plate is circumferentially with sealing surface.

7. cold air regulating valve according to claim 6, it is characterised in that: described when the butterfly plate is in the closed position Sealing surface and sealing ring constitute wedge surface sealing and cooperate.

8. cold air regulating valve according to claim 1, it is characterised in that: the choke block the butterfly plate from open to When closing, the throttle orifice of the choke block is sequentially exposed to before the fluid channel opened to control the speed that fluid passes through.

9. cold air regulating valve according to claim 1, it is characterised in that: the throttle orifice ecto-entad increases setting.