CN205504092U

CN205504092U - Sealed plane angle degree automatic compensation's in area flue check valve structure

Info

Publication number: CN205504092U
Application number: CN201620261692.XU
Authority: CN
Inventors: 夏志生
Original assignee: JIANGSU MEIDA ELECTRICAL APPLIANCE CO Ltd; Zhejiang Meida Industrial Co Ltd
Current assignee: ZHEJIANG MEIDA INDUSTRIAL CO LTD
Priority date: 2016-03-31
Filing date: 2016-03-31
Publication date: 2016-08-24
Anticipated expiration: 2026-03-31

Abstract

The utility model provides a sealed plane angle degree automatic compensation's in area flue check valve structure, includes the framework that sets up along floss hole circumference and covers the blade in the framework outside, first pivot is connected to one side of blade, a pivot mounting in the framework, the blade pass through base and a connecting piece and a pivoted joint, first pivot is connected to the one end of connecting piece, the other end of connecting piece is through the 2nd pivoted joint base, pedestal connection blade, the base setting between connecting piece and blade, make blade and connecting piece have relative pivoted space. The utility model discloses simple structure can realize the automatic angle compensation of blade when appearing sealed clearance between blade and the framework, eliminate sealed clearance, makes the blade framework of closely laminating, effectively seals the floss hole, prevents that the flue gas in the flue from scurrying into indoorly.

Description

The check valve for flue structure that a kind of band sealing surface angle compensates automatically

Technical field

This utility model relates to the check valve for flue structure that a kind of band sealing surface angle compensates automatically.

Background technology

Tradition lampblack absorber and integrated kitchen range product, in the urban architecture of standard, all can will collect Oil smoke discharge is in the common flue of residential housing, in the time that user's cooking operation is more concentrated Section, because carrying the exhaust of hot air of oil smoke in a large number in flue, causes the user being in upper strata to exist In the case of the blast that do not uses cigarette machine or cigarette machine to be provided is relatively low, the oil being easily caused in flue Cigarette enters the indoor of this user by airduct, causes room air muddiness, abnormal flavour, affects health Healthy.Therefore in general cigarette machine and integrated kitchen range product, it is equipped with check valve for flue parts, The at present the most general principle of these parts is to utilize gravity or spring force, by can only one-directional rotation Blade (can be metal, plastics or silicone rubber etc.) is fitted on the sealing surface of framework, stops Oil smoke is externally entering indoor.

Check (non-return) valve presently, there are twayblade, single blade two types, is each mainly characterized in that:

Twayblade: the rotating shaft of blade is generally located on the center position of sealed section, and blade is general Being divided into the half elliptic two panels of arranged on left and right sides, its rotating shaft is among oil smoke passage, because of it certainly The needs that body rotates, can produce smoke spillage at rotating shaft, and it is advantageous that will not be because of in flue The air-flow that steeply rises and blade is pulled open.

Single blade: blade rotor may be provided at outside or the inner side of ventilating duct, and blade is the completeest Whole ellipse, when its deficiency is predominantly in building eminence, easily because of the rising gas in flue Flow and blade is pulled open and causes oil smoke to scurry into indoor, therefore mostly use the pattern increasing balancing weight Prevent the generation of this type of phenomenon, and be stepped up weight with the differing heights used.Its advantage Being single, complete monoblock type for sealing surface, the gap of self is less, alter cigarette, permeability general Rate the most relatively twayblade low, its integral sealing effect is often better than double under normal circumstances Blade pattern.

Existing single blade check (non-return) valve misses in the precision of the processing and manufacturing because of part, the gap of assembling Under the restriction of the factors such as difference, spring force non-directional effect, technic index requirement, turning of its single shaft Making blade be fitted in completely on the sealing surface of floss hole to tending not to, the gap existed causes altering Cigarette.

It is illustrated in figure 1 the desirable seal state of existing single blade check (non-return) valve, arrow a institute in figure Finger direction is the flow direction of public flue gas in flue 2, and arrow b direction is indoor smoke evacuation Direction, body of wall 1 is provided with floss hole, and blade 3 ' is connected by connector 4 ' and the first pivot 5 ' Connect (according to different blade 3 ' materials, connector 4 ' is not essential, if without connector 4 ', Then blade 3 ' and the first pivot 5 ' are directly connected to), blade 3 ' and connector 4 ' be fixing be connected or Integral type is arranged, and blade 3 ' is connected by the first pivot 5 ' with framework 6 '.Normal air draft state Under, blade 3 ', can be around the first pivot 5 ' by side clockwise by the Action of Wind pressure of exhaust equipment Stir to rotation, but because of the stop by framework 6 ', cannot be inverse at diagram state lower blade 3 ' Hour hands rotate, thus blade 3 ' is fitted in the upper also sealed cigarette road junction of framework 6 ', to stop flue Flue gas flow direction in 2 is indoor.

But in actual production process, because of connector 4 ' position height gap, scale error and The a variety of causes such as connector 4 ' and the angular error of blade 3 ' junction, part deformation, blade 3 ' tend not to, at the theoretical position sealed cigarette road junction of design, feelings as shown in Figure 2 often occur Condition: blade 3 ' lower end with framework B ' contact at fulcrum, but framework A ' fulcrum and blade 3 Between still suffer from gap, the first pivot 5 ' cannot continue to revolve counterclockwise under the effect of B ' fulcrum Turning and seal, because of single blade check (non-return) valve only one of which the first pivot 5 ', therefore there is similar gap in it Situation tends to occur at the A ' fulcrum or B ' fulcrum of the first pivot 5 ' radial direction, and axially Position the most seldom occurs, the most then whole sealing surface can be caused poorly sealed, in there is flue Flue gas is altered to indoor phenomenon.

Summary of the invention

The problem producing sealing off gap in order to solve single blade check (non-return) valve because of mismachining tolerance, this reality Sealing off gap can be carried out automatic correction-compensation by novel offer one, make the blade can be more stably The check valve for flue structure that the band sealing surface angle compressed compensates automatically is contacted with sealing surface.

The technical solution adopted in the utility model is:

The check valve for flue structure that a kind of band sealing surface angle compensates automatically, including along floss hole week The blade outside framework to the framework arranged and covering, the side of blade connects the first pivot, First is pivotally mounted in framework, and described blade is connected by pedestal and connector and the first pivot Connecing, one end of connector connects the first pivot, and the other end of connector is pivotally connected by second Pedestal, pedestal connects blade；Described pedestal is arranged between connector and blade, makes blade Space in relative rotation is had with connector.

Further, described first pivot is provided with torsion spring.

Further, on described blade, one end away from the first pivot is provided with weight.

Further, described connector is crank-like.

The beneficial effects of the utility model are embodied in: simple in construction, can be between blade and framework When seal clearance occurs, automatic correction-compensation sealing off gap, to eliminate seal clearance, and make leaf Sheet fits tightly framework, effectively seals floss hole, prevents the flue gas in flue from scurrying into indoor.

Accompanying drawing explanation

Fig. 1 is the existing single blade check (non-return) valve structural representation when blade fully seals framework.

Fig. 2 is that existing single blade check (non-return) valve is when there is sealing off gap between blade and framework Structural representation.

Fig. 3 is this utility model structure when blade fully seals framework and stress schematic diagram.

Fig. 4 is that this utility model angle when blade exists sealing off gap with framework compensates automatically Stress schematic diagram.

Detailed description of the invention

Referring to the drawings 3, the check valve for flue structure that a kind of band sealing surface angle compensates automatically, bag Include along the circumferentially disposed framework of floss hole 6 and cover the blade 3 outside framework 6, blade 3 Side connect the first pivot 5, the first pivot 5 is arranged in framework 6, described blade 3 Being connected with the first pivot 5 by pedestal 8 and connector 4, one end of connector 4 connects first Pivot 5, the other end of connector 4 connects pedestal 8 by the second pivot 7, and pedestal 8 connects Blade 3；Described pedestal 8 is arranged between connector 4 and blade 3, makes blade 3 and connects Fitting 4 has space in relative rotation.

Described first pivot 5 is provided with torsion spring, beneficially lift-off seal effect.

Described connector 4 is in crank-like.

When this utility model is positioned at the floss hole of higher floor, the material of optic lobe sheet 3 and first The auxiliary force size of the torsion spring on pivot 5, can be away from one end of the first pivot 5 on blade 3 (i.e. the free end of blade 3) sets weight, mends the compression of blade and the stress of high-rise air pressure Repay preferable effect, but the actual counterweight of weight need to have been adjusted in conjunction with actually used situation Whole.

The sealing surface that blade 3 surface, framework 6 coordinate with blade 3 must be smooth bright and clean, should not There is defect or burr etc..

As it is shown on figure 3, pedestal 8 is fastenedly connected integral with blade 3, both and connector 4 Can realize the rotation in little field angle around the second pivot 7, the position of placing restrictions on of rotation is blade When E point on 3 or D point contact with blade 2.

During as it is shown on figure 3, blade 3 seals framework 6, spring force at the first pivot 5 and Under the action of gravity of connector 4 self, can produce, at the second pivot 7, the power being perpendicular to blade 3 Directed force F 1, directed force F 1 makes blade 3 rotate counterclockwise around the first pivot 5, When going to blade 3 A, B with framework 6 and propping up point cantact, framework 6 can produce and F1 phase Reciprocal directed force F 2 and F3, as F1=F2+F3, blade 3 and the sealing of framework 6 Face fits tightly, the thrust that blade 3 can be in addition certain to the sealing surface of framework 6 simultaneously.

(the leaf when occurring that sealing off gap occurs in the local caused because of mismachining tolerance shown in Fig. 2 There is gap in sheet 3 at the A fulcrum of framework, but contact is good at framework B fulcrum), this Automatically compensating of utility model with the process realizing fully sealing is: as shown in Figure 4, blade 3 During rotating counterclockwise, the counteracting force F2 of blade 3 can be got over by the B fulcrum of framework 6 Come the biggest；And blade 3 is still in vacant state at the A fulcrum of framework 6, do not exist any Active force.According to mechanics principle, blade 3 can produce the side clockwise around the second pivot 7 To moment T1, and blade 3 can under the effect of moment T1 along the second pivot 7 dextrorotation Turn (then the distance away from blade of the D point on connector 4 can taper into, and on connector 4 The E point distance away from blade can become larger), until at the A fulcrum of framework 6 with blade 3 Contact, produces directed force F 3 (as shown in Figure 3), and F3 is gradually increased；F3 can be to blade 3 produce anticlockwise moment T2 around the second pivot 2, and moment T2 is gradually increased, Until offseting with moment T1 at the B fulcrum of framework 6.Final moment T1, T2 are equal Weigh, and the stress of blade 3 surrounding all balances, i.e. F1=F2+F3.Blade 3 realizes and framework 6 fit tightly, completes the automatic compensation in gap at the A fulcrum to framework 6, reaches such as figure Sealing state shown in 3.Otherwise, if gap is present at the B fulcrum of framework 6, the most whole Self-compensating process is contrary.

2 distances away from blade of D, E determine before and after compensation (i.e. at A, B two) angle Degree, too small offset angle may result in and can not meet the blade amount of spin that need to compensate, excessive Offset angle then can make blade 3 in switching process because excessive free distance causes and it Its parts touches, stuck, be unfavorable on the contrary sealing, specifically need to combine the size of substrate 8 and The process characteristic of product, part processing precision determine the offset angle that need to reserve.

Content described in this specification embodiment is only the way of realization to utility model design Enumerate, protection domain of the present utility model is not construed as being only limitted to what embodiment was stated Concrete form, protection domain of the present utility model is also and in those skilled in the art according to this practicality Novel design it is conceivable that equivalent technologies means.

Claims

1. the check valve for flue structure that a band sealing surface angle compensates automatically, the blade outside framework including the framework circumferentially disposed along floss hole and covering, the side of blade connects the first pivot, first is pivotally mounted in framework, it is characterized in that: described blade is pivotally connected by pedestal and connector and first, one end of connector connects the first pivot, and the other end of connector passes through the second pivotally connected pedestal, and pedestal connects blade；Described pedestal is arranged between connector and blade, makes blade and connector have space in relative rotation.

The check valve for flue structure that a kind of band sealing surface angle the most as claimed in claim 1 compensates automatically, it is characterised in that: described first pivot is provided with torsion spring.

The check valve for flue structure that a kind of band sealing surface angle the most as claimed in claim 2 compensates automatically, it is characterised in that: on described blade, the one end away from the first pivot is provided with weight.

The check valve for flue structure that a kind of band sealing surface angle the most as claimed in claim 3 compensates automatically, it is characterised in that: described connector is crank-like.