CN111895149A

CN111895149A - Waterproof ventilative automatic drainage system

Info

Publication number: CN111895149A
Application number: CN202010888480.5A
Authority: CN
Inventors: 唐凯; 袁国祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2020-11-06

Abstract

The invention discloses a waterproof breathable automatic drainage system, which comprises: a housing (300); the air inlet valve (100) and the air outlet/drain valve (200) are arranged on the shell, and the air inlet valve comprises a first one-way valve core (103) and a waterproof air-permeable film (106); the gas and water discharge valve (200) comprises a second one-way valve core (203) and a guide pipe (201), one end of the guide pipe (201) is connected with an inlet of the second one-way valve core (203), and the other end of the guide pipe (201) extends to a position close to the bottom of the shell. The system solves the problem that the sealing structure is easy to damage due to the difference between the internal pressure and the external pressure, solves the problem of accumulated water due to condensation, can effectively reduce the failure rate of equipment, and prolongs the service life of the equipment.

Description

Waterproof ventilative automatic drainage system

Technical Field

The invention relates to a ventilating and draining system of a sealed shell, in particular to a waterproof ventilating automatic draining system applied to a sealed shell with an electric appliance inside.

Background

A sealed housing containing an electrical appliance, such as an airfield lighting isolation transformer box, is usually filled with a waterproof glue at the junction of the cable and the housing to form a waterproof structure. Because in the use with electrical apparatus generate heat and outside climate environment changes, lead to going out to appear the pressure differential in the casing, the pressure differential changes along with the work of electrical apparatus/stop and outside environment's change moreover, and these are aroused the meeting an emergency of casing, and then lead to waterproof construction to damage, can't satisfy water-proof effects again.

One solution to the above problem is to add a vent valve, balance the pressure inside and outside the housing through the vent valve, but bring about a new problem that when hot air in the environment enters the housing, condensation is easily formed on the housing wall, and water accumulation is formed as time increases, which affects the normal use of the electrical appliance.

Disclosure of Invention

The invention aims to provide a waterproof and breathable automatic drainage system, which aims to overcome the technical defects of easy damage of a waterproof structure and easy formation of accumulated water in the related art.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a waterproof, breathable, automatic drainage system, comprising:

a housing;

the waterproof breathable air inlet valve is arranged on the shell and comprises a first one-way valve core and a waterproof breathable film; and

the exhaust and drain valve is arranged on the shell and comprises a second one-way valve core and a guide pipe, one end of the guide pipe is connected with an inlet of the second one-way valve core, and the other end of the guide pipe extends to a position close to the bottom of the shell and is used for guiding accumulated water in the shell into the second one-way valve core through internal pressure and communicating the shell with an exhaust channel of the second one-way valve core.

Preferably, the waterproof breathable air inlet valve further comprises a first valve cover, a first valve body, an air outlet and an air inlet, the air inlet is arranged at the side part of the first valve cover, the air outlet is arranged in the first valve body, the waterproof breathable film is arranged at the end part, corresponding to the first valve cover, of the first valve body, and the first check valve core is arranged in the air outlet.

Preferably, the waterproof breathable air inlet valve further comprises a first sheath, and the first sheath is arranged on the first valve cover and corresponds to the air inlet hole to form a first blocking part.

Preferably, the first blocking portion of the first sheath further extends to the outside of the first valve body and forms a first slit with the side of the first valve body.

In some embodiments, the first one-way valve element is a silicone duckbill valve.

In some embodiments, the first check valve core includes a first movable valve plate, a first spring, and a first seal ring, the first seal ring is fixedly disposed in the air outlet, the first movable valve plate is pressed by the first spring and is in sealing fit with the first seal ring, and an air passage is disposed on the first movable valve plate corresponding to an outer side of the first seal ring.

Preferably, the gas/water discharge valve further comprises a second valve body, a second valve cover, a valve chamber and a gas/water discharge hole, the gas/water discharge hole is arranged at the side of the second valve cover or the side of the second valve body, and the second check valve core is arranged in the valve chamber.

Preferably, the gas and water discharge valve further comprises a second sheath, and the second sheath is arranged on the second valve cover and forms a second blocking part corresponding to the gas and water discharge hole.

Preferably, the second blocking portion of the second sheath further extends to the outside of the second valve body and forms a second slit with the side of the second valve body.

In some embodiments, the second one-way valve element is a silicone duckbill valve.

In some embodiments, the second check valve core includes a second movable valve plate, a second spring, and a second sealing ring, the second sealing ring is fixedly disposed in the valve cavity, the second movable valve plate is pressed by the second spring and is in sealing fit with the second sealing ring, and an air passage is disposed on the second movable valve plate corresponding to the outer side of the second sealing ring.

Preferably, the air channel is a notch arranged at the edge of the movable valve plate.

Compared with the prior art, the invention has at least the following beneficial effects:

this system uses the waterproof ventilative admission valve that has waterproof ventilated membrane and check valve core to and the exhaust and drain valve that has check valve core and pipe, effectively solved because of the fragile problem of seal structure that the inside and outside atmospheric pressure difference leads to, and solved because of the problem that the condensation leads to ponding, can effectively reduce the fault rate of this type of equipment, prolong its life.

Drawings

FIG. 1 is a schematic view of a waterproof breathable automatic drainage system;

FIG. 2 is a schematic view of an embodiment of a waterproof, breathable air inlet valve;

FIG. 3 is a schematic view of another embodiment of a waterproof, breathable air admission valve;

FIG. 4 is a schematic view of an embodiment of a gas/water discharge valve;

FIG. 5 is a schematic view of another embodiment of the gas/water discharge valve;

FIG. 6 is a schematic view of an air passage on the movable flap;

reference numerals:

100. a waterproof breathable air inlet valve; 200. an air discharge valve; 300. a housing; 400. an electrical appliance; 500. a cable; 600. a support;

101. an air outlet; 102. a plug; 103. a first one-way valve element; 104. a step portion; 105. a first valve body; 106. a waterproof breathable film; 107. a first valve cover; 108. a first sheath; 109. an air inlet; 110. a first blocking portion; 111. a first slit; 103-1, a first spring; 103-2, a first movable valve plate; 103-3, a first sealing ring; 103-2-1, airway;

201. a conduit; 202. a second valve body; 203. a second one-way valve element; 204. a second valve cover; 205. a second sheath; 206. a valve cavity; 207. an exhaust drain hole; 208. a second blocking portion; 209. a second slit; 203-1, a second spring; 203-2, a second movable valve plate; 203-3 and a second sealing ring.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Unless otherwise specified, "first" and "second" in the present application do not denote a sequential or primary-secondary relationship, but merely distinguish different components.

Referring to fig. 1, the waterproof and air-permeable automatic drainage system includes: a shell 300, a waterproof and breathable air inlet valve 100 and an air and water outlet valve 200. The housing 300 is internally provided with the electrical appliance 400, the power supply cable 500 of the electrical appliance 400 passes through the housing 300 and is led out of the housing 300, and waterproof glue is filled at the joint of the cable 500 and the housing 300 to form a sealing structure. Further, a bracket 600 is provided at the bottom of the electrical appliance 400. The waterproof air-permeable intake valve 100 and the gas/water discharge valve 200 are installed on the top of the housing 300. A gasket 301 is provided between the case cover and the main body of the case 300.

Wherein the waterproof and breathable air inlet valve 100 comprises a first one-way valve spool 103 (see fig. 2 and 3) and a waterproof and breathable membrane 106 (see fig. 2 and 3). The waterproof and breathable membrane 106 is used for blocking water from entering the shell 300 through the valve. And the first check valve spool 103 allows external air to enter the inside of the housing 300 when the internal air pressure of the housing 300 is less than the external air pressure, and prevents the air inside the housing 300 from flowing out of the housing 300 through the valve regardless of a pressure difference between the inside and the outside of the housing 300.

The gas/water discharge valve 200 includes a second check valve 203 (see fig. 4 and 5) and a conduit 201, one end of the conduit 201 is connected to an inlet of the second check valve 203, and the other end of the conduit 201 extends to a position near the bottom of the casing, and is used for guiding accumulated water in the casing 300 into the second check valve 203 by internal pressure and serving as a gas discharge passage for communicating the casing 300 and the second check valve 203. Likewise, second check valve spool 203 allows water or air, whether water or air, to flow only outward from the interior of housing 300, but not into housing 300.

The working principle is as follows:

when the internal air pressure of the shell 300 is smaller than the external air pressure, the air pressure difference enables the first one-way valve core 103 to be conducted and the second one-way valve core 203 to be cut off, that is, the waterproof breathable air inlet valve 100 is conducted, the air exhaust and drainage valve 200 is cut off, and ambient air enters the shell 300 through the waterproof breathable air inlet valve 100, so that the internal and external pressures of the shell 300 are balanced;

when the internal air pressure of the shell 300 is greater than the external air pressure, the air pressure difference enables the first check valve core 103 to be turned off and the second check valve core 203 to be turned on, that is, the waterproof breathable air inlet valve 100 is turned off, the gas and water discharge valve 200 is turned on, and the air in the shell 300 is discharged out of the shell 300 through the gas and water discharge valve 200, so that the internal and external pressures of the shell 300 are balanced;

therefore, the pressure inside and outside the shell 300 is kept balanced, the shell 300 cannot be strained, and the waterproof structure on the shell 300 cannot be influenced;

when condensation is generated in the case 300 and water is formed in the case 300 and submerges the lower end of the guide pipe 201, the accumulated water is introduced into the second check valve spool 203 through the guide pipe 201 by the internal pressure of the case 300 and is discharged out of the case 300 through the second check valve spool 203, so that the water accumulation in the case 300 can be prevented.

Fig. 2 and 3 show two embodiments of the waterproof, breathable inlet valve 100, respectively, which differ mainly in the one-way valve core.

In the embodiment shown in fig. 2, the one-way valve core adopts a silica gel duckbill valve. As shown in fig. 2, the waterproof and breathable intake valve 100 of the present embodiment specifically includes: the valve comprises a first valve cover 107, a first valve body 105, a first one-way valve core 103, a waterproof breathable film 106, an air outlet hole 101 and an air inlet hole 109, wherein the air inlet hole 109 is formed in the side portion of the first valve cover 107, the air outlet hole 101 is formed in the first valve body 105, the waterproof breathable film 106 is fixed at the end portion, corresponding to the first valve cover 107, of the first valve body 105, and the first one-way valve core 103 is fixed in the air outlet hole 101 through the cooperation of a plug 102 and a step portion 104 in the air outlet hole 101. The waterproof and breathable air inlet valve 100 further comprises a first sheath 108, wherein the first sheath 108 is in snap fit with the first valve cover 107 and forms a first blocking part 110 corresponding to the air inlet hole 109. The first blocking portion 110 of the first sheath 108 further extends to the outside of the first valve body 105, and forms a first slit 111 with the side of the first valve body 105. The material of the first sheath 108 is preferably silica gel or soft rubber. Wherein the first sheath 108 can prevent water, dust and impurities from entering through the first blocking part 110. The first slit 111 allows gas to pass therethrough and prevents other foreign materials from passing therethrough.

Referring to fig. 1 and 2, when the internal air pressure of the casing 300 is less than the external air pressure, the air pressure difference enables the silicone duckbill valve to be turned on, and the external air sequentially enters the casing 300 through the first slit 111, the air inlet 109, the waterproof breathable film 106, the silicone duckbill valve, and the air outlet 101. The silicone duckbill valve prevents air from flowing out of the housing 300 and the waterproof breathable membrane 106 prevents water from entering the housing 300.

In the embodiment shown in FIG. 3, the check valve core is composed of a first movable valve plate 103-2, a first spring 103-1 and a first sealing ring 103-3. As shown in fig. 3, the waterproof and breathable intake valve 100 of the present embodiment specifically includes: the valve comprises a first valve cover 107, a first valve body 105, a first one-way valve core 103, a waterproof breathable film 106, an air outlet hole 101 and an air inlet hole 109, wherein the air inlet hole 109 is formed in the side portion of the first valve cover 107, the air outlet hole 101 is formed in the first valve body 105, the waterproof breathable film 106 is fixed at the end portion, corresponding to the first valve cover 107, of the first valve body 105, and the first one-way valve core 103 is fixed in the air outlet hole 101 through a plug 102. Specifically, a first sealing ring 103-3 of the first check valve spool 103 is embedded in a stepped portion 104 of the air outlet 101, a first movable valve plate 103-2 is installed between the first sealing ring 103-3 and the plug 102, and is pressed by a first spring 103-1 to be in sealing fit with the first sealing ring 103-3, and an air duct 103-2-1 (see fig. 6) is arranged on the first movable valve plate 103-2 corresponding to the outer side of the first sealing ring 103-3. Similarly, the waterproof and breathable air inlet valve 100 of the present embodiment is also provided with the first sheath 108.

Referring to fig. 1 and 3, when the internal air pressure of the housing 300 is lower than the external air pressure, the air pressure difference causes the first movable valve plate 103-2 to move downward against the pressure of the first spring 103-1, and separate from the first sealing ring 103-3, and the air in the environment sequentially enters the housing 300 through the first slit 111, the air inlet 109, the waterproof breathable film 106, the gap between the first movable valve plate 103-2 and the first sealing ring 103-3, the air passage 103-2-1 on the first movable valve plate 103-2, and the air outlet 101.

An external thread is provided at one end of the first valve body 105 corresponding to the air outlet hole 101, and the waterproof and breathable air inlet valve 100 is assembled with the housing 300 through the external thread.

Fig. 4 and 5 show two embodiments of the gas/water discharge valve 200, respectively, and the two embodiments are different mainly in the check valve core.

In the embodiment shown in fig. 4, the one-way valve core adopts a silica gel duckbill valve. As shown in fig. 4, the gas/water discharge valve 200 of the present embodiment specifically includes: the valve comprises a second valve body 202, a second valve cover 204, a second one-way valve core 203, a conduit 201, a valve cavity 206 and an exhaust drain hole 207, wherein the exhaust drain hole 207 is arranged at the side part of the second valve cover 204, the second one-way valve core 203 is fixed in the valve cavity 206 in a butting mode through the second valve cover 204 and the second valve body 202, and one end of the conduit 201 extends into the second valve body 202 and is connected with an inlet of the second one-way valve core 203. The gas/water discharge valve 200 further includes a second sheath 205, wherein the second sheath 205 is engaged with the second valve cover 204 and forms a second blocking portion 208 corresponding to the gas/water discharge hole 207. The second blocking portion 208 of the second sheath 205 further extends to the outside of the second valve body 202, and forms a second slit 209 with the side of the second valve body 202.

Referring to fig. 1 and 4, when the internal air pressure of the housing 300 is greater than the external air pressure, the air pressure difference enables the silicone duckbill valve to be turned on, and the air inside the housing 300 is exhausted from the housing 300 through the conduit 201, the silicone duckbill valve, the air exhaust and drainage hole 207, and the second slit 209 in sequence. When accumulated water is formed in the shell 300 and the lower end of the conduit 201 is submerged, the accumulated water enters the silica gel duckbill valve through the conduit 201 by the internal pressure of the shell 300 and is automatically discharged through the silica gel duckbill valve and the exhaust and drainage hole 207.

In the embodiment shown in FIG. 5, the check valve core is composed of a second movable valve plate 203-2, a second spring 203-1 and a second sealing ring 203-3. As shown in fig. 5, the gas/water discharge valve 200 of the present embodiment specifically includes: the valve comprises a second valve body 202, a second valve cover 204, a second one-way valve core 203, a conduit 201, a valve cavity 206 and an exhaust and drainage hole 207, wherein the exhaust and drainage hole 207 is arranged at the side part of the second valve body 202, the second one-way valve core 203 is fixed in the valve cavity 206 through the second valve cover 204 and the second valve body 202 in a matching way, and one end of the conduit 201 extends into the second valve body 202 and is connected with an inlet of the second one-way valve core 203. Specifically, a second seal ring 203-3 of the second check valve spool 203 is embedded in the valve cavity 206, a second movable valve plate 203-2 is installed between the first seal ring 103-3 and the second valve cover 204, and is pressed by a second spring 203-1 to be in sealing fit with the second seal ring 203-3, and an air passage 103-2-1 (see fig. 6) is arranged on the second movable valve plate 203-2 corresponding to the outer side of the second seal ring 203-3. Similarly, the gas/water discharge valve 200 further includes a second sheath 205, and the second sheath 205 is engaged with the second valve cover 204 and forms a second blocking portion 208 corresponding to the gas/water discharge hole 207. The second blocking portion 208 of the second sheath 205 further extends to the outside of the second valve body 202, and forms a second slit 209 with the side of the second valve body 202.

Referring to fig. 1 and 5, when the internal air pressure of the housing 300 is greater than the external air pressure, the air pressure difference causes the second movable valve plate 203-2 to move upward against the pressure of the second spring 203-1, and separate from the second sealing ring 203-3, and the air inside the housing 300 is discharged out of the housing 300 through the conduit 201, the gap between the second movable valve plate 203-2 and the second sealing ring 203-3, the air discharge hole 207, and the second slit 209 in sequence. When accumulated water is formed in the housing 300 and the lower end of the conduit 201 is submerged, the accumulated water enters the second check valve spool 203 through the conduit 201 by the internal pressure of the housing 300 and is automatically discharged through the second check valve spool 203 and the exhaust drain hole 207.

Among them, the pipe 201 of the gas/water discharge valve 200 is preferably a capillary pipe so that it can be automatically discharged by the internal pressure of the case 300 even when the accumulated water is small.

Also, the second valve body 202 is provided with an external thread through which the gas/water discharge valve 200 is assembled with the housing 300.

Referring to fig. 6, in order to make the valve smaller, the air duct 103-2-1 is formed as a movable valve plate by forming a notch at an edge of the movable valve plate.

Therefore, according to the invention, the shell 300 is provided with the waterproof breathable air inlet valve 100 with the waterproof breathable film 106 and the one-way valve core, and the air and water exhaust valve 200 with the one-way valve core and the conduit 201, so that the problem that the sealing structure is easy to damage and the problem that water is easy to accumulate due to condensation are effectively solved, the failure rate of the equipment can be effectively reduced, and the service life of the equipment is prolonged.

The application fields of the waterproof breathable automatic drainage system include but are not limited to airfield light-assisted lamp isolation transformer boxes, energy-gathered photovoltaic power generation devices and the like.

The present invention has been described in detail with reference to the specific embodiments, and the detailed description is only for the purpose of helping those skilled in the art understand the present invention, and is not to be construed as limiting the scope of the present invention. Various modifications, equivalent changes, etc. made by those skilled in the art under the spirit of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waterproof breathable automatic drainage system, comprising:

a housing (300);

the waterproof and breathable air inlet valve (100) is arranged on the shell (300), and the waterproof and breathable air inlet valve (100) comprises a first one-way valve core (103) and a waterproof and breathable film (106); and

set up in the gas and water discharge valve (200) of casing (300), gas and water discharge valve (200) include second check valve core (203) and pipe (201), the one end of pipe (201) with the entry of second check valve core (203) links to each other, the other end of pipe (201) extends to and is close to the shell bottom department, pipe (201) are used for will through interior pressure ponding in casing (300) is leading-in second check valve core (203) and be used as the intercommunication casing (300) with the exhaust passage of second check valve core (203).

2. The waterproof breathable automatic drainage system according to claim 1, characterized in that the waterproof breathable air inlet valve (100) further comprises a first valve cover (107), a first valve body (105), an air outlet hole (101) and an air inlet hole (109), the air inlet hole (109) is arranged at the side of the first valve cover (107), the air outlet hole (101) is arranged at the first valve body (105), the waterproof breathable film (106) is arranged at the end of the first valve body (105) corresponding to the first valve cover (107), and the first one-way valve core (103) is arranged in the air outlet hole (101).

3. The waterproof breathable automatic drainage system according to claim 2, characterized in that the waterproof breathable air inlet valve (100) further comprises a first sheath (108), the first sheath (108) being arranged on the first valve cover (107) and forming a first barrier (110) in correspondence of the air inlet hole (109).

4. The waterproof breathable automatic drainage system according to claim 3, characterized in that the first blocking portion (110) of the first sheath (108) also extends to the outside of the first valve body (105) and forms a first slit (111) with the side of the first valve body (105).

5. The waterproof breathable automatic drainage system according to claim 2,

the first one-way valve core (103) is a silica gel duckbill valve; or

The first check valve core (103) comprises a first movable valve plate (103-2), a first spring (103-1) and a first sealing ring (103-3), the first sealing ring (103-3) is fixedly arranged in the air outlet (101), the first movable valve plate (103-2) is extruded by the first spring (103-1) and is in sealing fit with the first sealing ring (103-3), and an air channel (103-2-1) is arranged on the first movable valve plate (103-2) and corresponds to the outer side of the first sealing ring (103-3).

6. The waterproof breathable automatic drainage system according to claim 1, wherein the gas and water discharge valve (200) further comprises a second valve body (202), a second valve cover (204), a valve cavity (206), and a gas and water discharge hole (207), the gas and water discharge hole (207) is disposed at the side of the second valve cover (204) or the side of the second valve body (202), and the second one-way valve core (203) is disposed in the valve cavity (206).

7. The waterproof breathable automatic drainage system according to claim 6, wherein the gas and water discharge valve (200) further comprises a second sheath (205), and the second sheath (205) is disposed on the second valve cover (204) and forms a second blocking portion (208) corresponding to the gas and water discharge hole (207).

8. The waterproof breathable automatic drainage system according to claim 7, characterized in that the second blocking portion (208) of the second sheath (205) also extends to the outside of the second valve body (202) and forms a second slit (209) with the side of the second valve body (202).

9. The waterproof breathable automatic drainage system of claim 6,

the second one-way valve core (203) is a silica gel duckbill valve; or

The second one-way valve core (203) comprises a second movable valve plate (203-2), a second spring (203-1) and a second sealing ring (203-3), the second sealing ring (203-3) is fixedly arranged in the valve cavity (206), the second movable valve plate (203-2) is extruded by the second spring (203-1) and is in sealing fit with the second sealing ring (203-3), and an air channel is arranged on the second movable valve plate (203-2) corresponding to the outer side of the second sealing ring (203-3).

10. The waterproof breathable automatic drainage system according to claim 5 or 9, characterized in that the air channel (103-2-1) is a notch arranged at the edge of the movable valve plate.