CN2435596Y

CN2435596Y - One-way airflow leaf-valve

Info

Publication number: CN2435596Y
Application number: CN 00246012
Authority: CN
Inventors: 黄钊仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-03
Filing date: 2000-08-03
Publication date: 2001-06-20
Anticipated expiration: 2010-08-03

Abstract

The utility model relates to a one-way airflow leaf-valve. The utility model at least comprises a leaf and a baffle which are arranged on one side of a valve port of a valve body in the assembling way. The baffler is made into an L shape, and the leaf is arranged between the valve port and the L-shaped baffler to control the air flow when the valve port operates in the one-way opening and closing way; thus, the opening end of the leaf opens the larger cover area of the valve port to increase the air flow under the condition of keeping smaller priming row spacing, the durability of the leaf can be boosted to prevent the leaf from being deformed after a long time, the noise of actions of the leaf can be reduced to ensure benefits of stably opening valve and increasing flow, etc.

Description

Unidirectional ventilation leaf valve

The utility model relates to a kind of unidirectional ventilation leaf valve.

Unidirectional ventilation leaf valve (as shown in Figure 1, 2) commonly used at present, mainly be distolateral at the valve port 10 of a valve body 1, utilize a dowel pile 11 and another screw 12 locks to organize a reed 13 and another catch 14, when making reed 13 because of the priming of the stream of the ventilation in the valve port 10, can be by catch 14 backstops and the amount of starting that limits reed with to open valve face long-pending, the ventilation flow rate when driving valve with control.

Catch 14 in the common unidirectional ventilation leaf valve of this kind is made the oblique shape of arc, can possess under the prerequisite of opening the valve amount of starting more greatly in order to make reed 13, the distance that the opening end 15 of the oblique shape baffle plate 14 of necessary increasing arc and valve port are 10, reed 13 is possessed ventilated and flow the big priming line-spacing h1 that promotes, but it is easily excessive because of reed 13 priming line-spacing h1, and after permanent the use, cause the metaboly of elastic fatique, cause taking place contrary pressure of serious gas and leak puzzlement, this is the not good main cause of unidirectional ventilation leaf valve durability commonly used, and this reed 13 is being subjected to also can to influence the quiet quality of assembling environment because of the excessive noise that produces of priming line-spacing h1 when ventilation is mobile to be done; In other words, if in order to prevent reed 13 distortion, and when the oblique shape of this common arc baffle plate 14 is set, the distance that reduction opening end 15 and valve port are 10, make reed 13 diminished by the priming line-spacing h1 of 14 restrictions of catch and backstop, therefore can cause but that reed 13 is controllable leaves the valve amount of starting and to hold valve face long-pending too small, open the ability of valve ventilation flow rate and hinder to increase same unit valve port area under.

Therefore, above-mentioned common unidirectional ventilation leaf valve practicability is not good enough, mainly be because of its in order to restriction and catch 14 shaped design of backstop reed 13 amounts of starting not good due to, and only utilize single screw 12 and dowel pile 11 simultaneously one-sided clips 13 and catch 14, it prevents that the durability of becoming flexible is also not good, the maltha packing ring 16 of this valve body 1 periphery simultaneously, only be by its elastic neck cord on valve body 1 end wall, also be short of the ability of durable anti-leak.

Shortcoming at the prior art existence, main purpose of the present utility model is to provide a kind of unidirectional ventilation leaf valve, make the reed opening end under the situation of possessing less priming line-spacing, the stable valve port area coverage greatly of opening, with the increasing ventilation flow rate, and the durability of enhancing reed, prevent that reed from deforming after durable, reduce the reed action noise, to guarantee the stable benefits such as valve and increase ventilation flow rate of opening.

For reaching above-mentioned purpose, the utility model is achieved through the following technical solutions: a kind of unidirectional ventilation leaf valve, at least be included in a reed and another baffle plate of the one-sided lock group of valve port of a valve body, this baffle plate has a bottom end lock group pressure holding clip, is the reed that can cover and control the unidirectional open and close operation form of valve port and is located between valve port and baffle plate; It is characterized in that: this baffle plate is the ヘ shape, and its opening end has recessed stopper, and the baffle plate stage casing has lug boss.

By a kind of unidirectional ventilation leaf valve of the utility model, overcome the shortcoming of prior art, reached the purpose of above-mentioned creation, the utility model is provided with a baffle plate that presents the ヘ shape on this controls the valve port reed of unidirectional ventilation, utilize the stopper backstop of ヘ shape baffle openings end and limit reed and possess less priming line-spacing, produce noise to prevent the reed distortion and to reduce, and strengthen the durability of reed; Simultaneously, the lug boss that utilizes ヘ shape baffle plate stage casing to form is supplied with reed and can be opened bigger valve port breathing area and flow; In addition,, become flexible, enhance its durable assemble stable to prevent to produce with reed and the one-sided locking of a benefit screw simultaneously of ヘ shape baffle plate that is mounted on the valve port; The maltha packing ring of valve body periphery of the present utility model adopts ejection forming technique integrated fixed with the coating of valve body periphery, therefore has preferable seal and durable leakage prevention capability.

The utility model is described in further detail below in conjunction with drawings and the specific embodiments.

Fig. 1 is the stereogram of unidirectional ventilation leaf valve commonly used;

Fig. 2 is the sectional view of unidirectional ventilation leaf valve commonly used;

Fig. 3 is the stereogram of the unidirectional ventilation leaf valve of the utility model;

Fig. 4 is the sectional view of the unidirectional ventilation leaf valve of the utility model;

Fig. 5 is the aeration status sectional view of the unidirectional ventilation leaf valve of the utility model;

Fig. 6 is the schematic representation of implementing in the environment that is assembled in of the unidirectional ventilation leaf valve of the utility model.

As shown in Figure 3, a kind of unidirectional ventilation leaf valve provided by the utility model comprises the valve port 20 one-sided reed 4 and the baffle plates 5 that utilize two

screws

3 and 31 lock groups of another valve body 2 at least; This baffle plate 5 is made the ヘ shape, has a bottom end 50 and wears lock for two-

screw

3 and 31, is fixed on the valve port 20 distolateral walls with pressure holding reed 4, and another opening end 51 has recessed stopper 52, and ヘ shape baffle plate 5 stage casings are formed with lug boss 53 (as shown in Figure 4).

This reed 4 is located at 5 on valve port 20 and ヘ shape baffle plate, and reed 4 is greater than valve port 20 areas, is to cover and to control valve port 20 unidirectional open and close operation forms (as Fig. 4 and shown in Figure 5).

When using, reed 4 is promoted by ventilation stream and starts (as shown in Figure 5), and utilize the stopper 52 of ヘ shape baffle plate 5 opening ends to limit and backstop reeds 4, make reed 4 possess less priming line-spacing h2, can prevent that reed 4 permanent back and forth primings use backs from the metaboly of elastic fatique taking place, also can reduce noise because of the reciprocal priming line-spacing h2 that dwindles reed 4 and produce, to strengthen the durability of reed 4.Simultaneously, when valve left by reed 4,, can make reed 4 stage casings of the stream of just being ventilated in promoting raise to be and heaving shape because of ヘ shape baffle plate 5 stage casings have lug boss 53, and then open bigger valve port slit 21, obtain the bigger valve of opening and lead to area and ventilation flow rate (as shown in Figure 5).Therefore reed 4 opening ends are being possessed under the less priming line-spacing h2 situation, stable area coverage of opening big valve port 20, to strengthen ventilation flow rate, and can strengthen the durability of reed, prevent that reed from deforming after durable, reduce the reed action noise, to guarantee out benefits such as valve stability and increase ventilation flow rate.

In addition, the maltha packing ring 6 of these valve body 2 peripheries is to adopt ejection forming technique integrated fixed with valve body 2 periphery coatings, therefore has preferable seal and durable leakage prevention capability.

On the assembling environment, can use the secondary air suction valve 80 of the unidirectional ventilation leaf valve of the utility model as locomotive outlet pipe 7, and be assembled on the air supply opening 81 of air-strainer 8 (as shown in Figure 6), or be installed in other gas supply pipelines or be provided with, use as having unidirectional non-return air valve, therefore on the ventilation valve port, be provided with such as and utilize ヘ shape baffle plate to limit and the backstop reed opens and closes the design of valve port, all should be subordinate to the utility model application area, and give Chen Ming.

In sum, be included in durability, reduce noise, open valve stability and can strengthen on the unit valve port area on the benefit such as ventilation flow rate, the unidirectional ventilation leaf valve of the utility model plate valve all is better than traditional product, the novelty and the progressive that therefore should possess creation, so apply for utility model patent in accordance with the law, earnestly ask and grant standard, to feeling moral just.

Claims

1, a kind of unidirectional ventilation leaf valve, at least be included in a reed and another baffle plate of the one-sided lock group of valve port of a valve body, this baffle plate has a bottom end lock group pressure holding clip, is the reed that can cover and control the unidirectional open and close operation form of valve port and is located between valve port and baffle plate; It is characterized in that: this baffle plate is the ヘ shape, and its opening end has recessed stopper, and the baffle plate stage casing has lug boss.