CN103511681A

CN103511681A - Check valve

Info

Publication number: CN103511681A
Application number: CN201210201624.0A
Authority: CN
Inventors: 张琦
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-18
Filing date: 2012-06-18
Publication date: 2014-01-15

Abstract

The invention relates to the technical field of residence sharing gas discharging systems, and provides a check valve. The check valve comprises a valve body provided with a gas inlet and a gas outlet. An opening where a check plate is inserted or pulled out is formed in the valve body. The check plate comprises a base and a check sheet which is hinged to the base and located in the normally-closed state to be used for preventing gas from flowing backwards. The connected position of the base and the opening and the connected position of the base and the inner wall of the valve body are respectively provided with a soft body. According to the check valve, when the check plate is inserted into the valve body through the opening, the close fastening strength between the check plate and the valve body is strengthened through the soft body arranged at the connected position of the check plate and the opening and the soft body arranged at the connected position of the check plate and the inner wall, gas leakage and falling caused by loosened close between the base and the valve body in the processes of opening and closing the check sheet are avoided, and the leakage resistance and the safety reliability of the check valve are improved.

Description

Safety check

Technical field

The present invention relates to house shared ventilation system technical field, more particularly, relate to be installed on a kind of safety check in shared ventilation system.

Background technique

At present, the place that joins of existing safety check, check plate and valve body, exists sealing poor, and both are poor in conjunction with tautness, and in long-term work, easily both get loose, and non-return effect was lost efficacy.

Summary of the invention

Technical problem to be solved by this invention is to overcome the defect of prior art, provides a kind of simple in structure, the safety check of tightness, good seal performance.

For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of safety check is provided, comprise the valve body that is provided with suction port and air outlet, described valve body is provided with the opening that can insert/extract out for a check plate, described check plate comprises base and is articulated with on described base and the non-return sheet pouring in down a chimney for preventing gas in normally off, and the inwall jointing place of described base and described opening jointing place and described base and described valve body is equipped with soft body.

Further, described soft body is located on described base or described valve body.

Particularly, described base or described valve body are provided with groove, and described soft body is embedded in described groove.

Particularly, described soft body section is rectangular or trapezoidal.

Or described soft body is that spray, scopiform are formed in one deck soft materials on described base or described valve body.

Particularly, described soft body is at least one in soft plastic, soft coating, rubber, leather, high polymer alloy, cork, soft synthesis material.

Further, described valve interior wall is provided with groove or the protruding band that can coordinate with described base edge.

In the present invention, when check plate stretches into valve body by opening, the soft body of establishing by itself and opening jointing place with and the soft body established with inwall jointing place, strengthen the closed fastening strength between check plate and valve body, in the process of avoid the unlatching of non-return sheet, closing, cause closed the becoming flexible of base and valve body and leak gas, come off, having improved anti-leakage and the safety reliability of safety check.

Accompanying drawing explanation

Fig. 1 is the elevational schematic view of the safety check that provides of the embodiment of the present invention one;

Fig. 2 is the floor map of base in the embodiment of the present invention one;

Fig. 3 is A-A or B-B or the C-C the first schematic diagram after dissecing in Fig. 2;

Fig. 4 is A-A or B-B or the C-C the second schematic diagram after dissecing in Fig. 2;

Fig. 5 is A-A or B-B or C-C the third schematic diagram after dissecing in Fig. 2;

Fig. 6 is the first schematic diagram of D-D after dissecing in Fig. 2;

Fig. 7 is the second schematic diagram of D-D after dissecing in Fig. 2;

Fig. 8 is D-D the third schematic diagram after dissecing in Fig. 2;

Fig. 9 is the elevational schematic view of the safety check that provides of the embodiment of the present invention two;

Figure 10 is the floor map of base in the embodiment of the present invention two;

Figure 11 is the first schematic diagram of A '-A ' after dissecing in Figure 10;

Figure 12 is the second schematic diagram of A '-A ' after dissecing in Figure 10;

Figure 13 is the first schematic diagram of B '-B ' after dissecing in Figure 10;

Figure 14 is the second schematic diagram of B '-B ' after dissecing in Figure 10.

Embodiment

In order to make object of the present invention, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.

Embodiment one

Referring to figs. 1 through Fig. 3, the first safety check provided by the invention, it comprises the valve body 100 that is provided with suction port 110Yu air outlet 120, valve body 100 is provided with the opening 130 that can insert/extract out for a check plate 200.Check plate 200 comprises base 210 and is articulated with on base 210 and the non-return sheet 220 pouring in down a chimney for preventing gas in normally off, and base 210 is provided with soft body 300 with opening 130 jointing places and base 210 with the inwall jointing place of valve body 100.

Base 210 comprises joint 211 and the insertion part 212 being connected with joint 211, and non-return sheet 220 is articulated with on insertion part 212.When check plate 200 stretches into valve body 100 by opening 130, the joint 211 of base 210 does not stretch in valve body 100 and handing-over fits in opening 130 places, and insertion part 212 is stretched in valve body 100 and with opening 130 closures of inwall and the valve body 100 of valve body 100, when reality is used, when having air inlet, can blow non-return sheet 220 and rotate to open, when stopping air inlet, the 220 automatic fall-back sealings of non-return sheet, prevent that gas from pouring in down a chimney.In this course, can drive base 210 loosening with valve body 100 and the closed place of opening 130.Like this, gas can by place, loosening gap pour in down a chimney into suction port 110, enter indoor, thereby major polluting indoor environment.And in the present invention, when check plate 200 stretches into valve body 100 by opening 130, the soft body 300 of establishing by itself and opening 130 jointing places with and the soft body 300 established with valve body 100 inwall jointing places, strengthen the closed fastening strength between check plate 200 and valve body 100, in the process of avoid the unlatching of non-return sheet, closing, cause closed the becoming flexible of base and valve body and leak gas, come off, having improved anti-leakage and the safety reliability of safety check.

With reference to Fig. 3, soft body 300 is located on base 210, and particularly, the end face contacting with the inwall of valve body 100 on base 210 insertion part 212 is provided with groove 2121, and soft body 300 is located in groove 2121.The shape of soft body 300 is not limit, and ，Qi cross section can be rectangular as shown in Figure 3, and in wherein opening a breach; Also can be as shown in Figure 4, cross section is rectangle; Also can be as shown in Figure 5, on the end face that soft body 300 is located at groove 2112 and the inwall of the covering Qi Yu air outlet 120 that stretches out contacts.Like this, by being arranged at this soft body 300, no matter and soft shape how, all effectively strengthen the closure strength between check plate 200 and the inwall of valve body 100, thereby guarantee sealability and effectively prevent from getting loose.

With reference to Fig. 6, soft body 300 is also located between the joint 211Yu insertion part 212 of base 210, and closed with the opening tangent plane of valve body 100.The structure of soft body 300 herein also can be multiple, can be shown in Fig. 6, and it is trapezoidal that cross section is, and opening 130 tangent planes incomplete and valve body 100 are closed; Also can be as shown in Figure 7, soft body 300 covers on joint 211 closed with opening 130 tangent planes of valve body 100 completely, also can fit with the outer wall of valve body 100.Also can as shown in Figure 8, be connected in completely between joint 211Yu insertion part 212.By being arranged at this soft body 300, no matter and soft 300 shapes how, all effectively strengthen check plate 200 and opening tangent plane closure strength, thereby guarantee the close solidity energy at opening 130 places.

Certainly, soft body 300 also can be formed in base 210 last layer soft materials for spray, scopiform.Soft body 300 is at least one in soft plastic, soft coating, rubber, leather, high polymer alloy, cork, soft synthesis material.

In the present embodiment, soft body 300 is located on check plate 200, when check plate 200 is cleaned, changed by opening 130 extractions, also soft body 300 can be cleaned, changes.Certainly, also soft body 300 can be located on the corresponding position of valve body 100.No matter soft body 300 is located on valve body 100 or check plate 200, as long as guarantee the inwall jointing place of base 210 and opening 130 jointing places and base 210 and valve body 100 not have gap, there is the situation of Leakage Gas, all within protection domain of the present invention.

In the present embodiment, the sealability of installing for further realizing valve body 100 and check plate 200, is provided with and can be with 213 with the protruding of base 210 edge mate in valve body 100 inwalls.Certainly, protruding be with 213 also can adopt groove to substitute herein.

Embodiment two

With reference to Fig. 9, Figure 10, it is the second safety check provided by the invention.This check valve structure is different from the first safety check, and it is tubular structure, and suction port 110 is in bottom, 120 top, air outlet.The structure of corresponding check plate 200 is also different from the first embodiment.In the present embodiment, the base 210Wei cross section of check plate 200 is circular, and non-return sheet 220 is two, and is semicircle.

As shown in Figure 11, soft body 300 is located in the groove 2121 of base 210.As shown in Figure 12, soft body 300 is located at spray, scopiform is formed in one deck soft materials on base 210.This crosses setting soft body 300 herein, no matter and soft 300 shapes how, all effectively strengthen the closure strength between check plate 200 and the inwall of valve body 100, thereby guarantee the close solidity energy of safety check.

As shown in Figure 13, soft body 300 is located in the groove 2111 of joint 211.As shown in figure 14, soft body 300 is located at spray, scopiform is formed in one deck soft materials on joint 211.This crosses setting soft body 300 herein, no matter and soft 300 shapes how, all effectively strengthen the closure strength of check plate 200 and opening 130 tangent planes, thereby guarantee the close solidity energy at opening 130 places.

These are only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a safety check, comprise the valve body that is provided with suction port and air outlet, described valve body is provided with the opening that can insert/extract out for a check plate, described check plate comprises base and is articulated with on described base and the non-return sheet pouring in down a chimney for preventing gas in normally off, it is characterized in that: the inwall jointing place of described base and described opening jointing place and described base and described valve body is provided with soft body.

2. safety check as claimed in claim 1, is characterized in that: described soft body is located on described base or described valve body.

3. safety check as claimed in claim 2, is characterized in that: described base or described valve body are provided with groove, and described soft body is embedded in described groove.

4. safety check as claimed in claim 3, is characterized in that: described soft body section is rectangular or trapezoidal.

5. safety check as claimed in claim 2, is characterized in that: described soft body is that spray, scopiform are formed in one deck soft materials on described base or described valve body.

6. safety check as claimed in claim 1, is characterized in that: described soft body is at least one in soft plastic, soft coating, rubber, leather, high polymer alloy, cork, soft synthesis material.

7. safety check as claimed in claim 1, is characterized in that: described valve interior wall is provided with groove or the protruding band that can coordinate with described base edge.