An automatic exhaust device convenient for quick installation

Abstract

The present invention belongs to the technical field of automatic exhaust, and discloses an automatic exhaust device convenient for quick installation, including a screw sleeve. One end of the screw sleeve is an air inlet end, and the other end is an exhaust end. A limiting card slot is arranged inside the screw sleeve. It is characterized in that an installation step is arranged inside the exhaust end, and a sealing mechanism, an exhaust adjustment mechanism and a compression cap are installed on the installation step. The compression cap is connected to the exhaust end, and a hollow is arranged in the middle of the compression cap for exposing the top of the exhaust adjustment mechanism; the water-blocking and breathable component adopts a structure of a membrane plus a support layer. Due to the existence of the rigid microporous structure layer, even under high pressure difference conditions, the rigid support layer will not deform, and the waterproof breathable membrane will not creep and bend, thereby improving the reliability of the whole when working under high pressure difference, and thus can well provide good support for the waterproof breathable membrane, will not cause the membrane sheet to deform, and improves the reliability.

Description

Technical Field

[0001] The present invention belongs to the technical field of automatic exhaust, and in particular relates to an automatic exhaust device which is easy to install quickly and is mainly used in the heating and domestic hot and cold water industries. Background Art

[0002] In heating and domestic hot and cold water, gas can cause problems such as lack of heat, gas blockage, and damage to the heat exchanger. To improve the quality of heating and domestic hot and cold water, exhaust is an important issue.

[0003] There are two ways to exhaust: automatic exhaust and manual exhaust. Manual exhaust is more reliable, but relatively troublesome, and it is difficult to exhaust the gas in time. Automatic exhaust can exhaust the gas at any time, but there may be problems such as exhaust valve jamming and leakage. Failure to discover it in time may cause property losses.

[0004] The commonly used automatic exhaust valve uses a float and a lever exhaust port for exhaust. When the gas gathers in the exhaust chamber, the float loses buoyancy and drops, and the lever is pressed to open the exhaust port. This method can only be used to exhaust gas when it gathers to a certain extent, and it requires a larger and higher gas storage space. In addition, impurities in the water are easily stuck in the exhaust port during exhaust, causing water leakage, and the reliability of use is not high. Another automatic exhaust valve uses a gasket with water absorption and expansion. When more air gathers at the exhaust port, the gasket and water are separated and gradually dry and shrink, thereby opening the exhaust hole for exhaust. When the gas is exhausted and the water comes out, the gasket absorbs water and expands, blocking the exhaust port to prevent water from flowing out. However, this method can only be used on hot water. The high temperature of hot water is used to dry the gasket, and the exhaust interval is very long. The gasket will also lose its expansion characteristics after a long period of use, thus failing.

[0005] There are also physical filtration methods that utilize the different diameters of gas molecules and liquid molecules. They are generally made of materials with micropores, such as PE plastic or polytetrafluoroethylene and other materials. The porous structure, the pore size is generally 0.1-10um. At this pore size, gas molecules can easily pass through, but water molecules cannot easily pass through.

[0006] However, this material cannot usually be used in situations where there is a high pressure difference on both sides, because the waterproof breathable membrane is generally only a few to tens of microns thick, has poor creep resistance, and low bending strength. Under the action of the pressure difference, the waterproof breathable membrane will be deformed and fail, especially when it needs to withstand a large pressure difference for a long time, such as in the environment of domestic water or heating water. Under a pressure difference of several kilograms for a long time, there will be leakage and deformation and damage of the waterproof breathable membrane. In addition, how to directly and quickly install and use it on the exhaust end of the existing equipment is an urgent problem to be solved. Summary of the invention

[0007] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art and to propose an automatic exhaust device that is easy to install quickly; the technical solution adopted to achieve the above-mentioned purpose is:

[0008] The venting device is convenient for quick installation and comprises a screw sleeve, one end of the screw sleeve is an air inlet end, and the other end is an air outlet end, a limiting slot is provided on the inner side of the screw sleeve, an installation step is provided in the exhaust end, a sealing mechanism, an exhaust adjustment mechanism and a pressure cap are installed on the installation step, the pressure cap is connected to the exhaust end and a hollow is provided in the middle of the pressure cap for exposing the top of the exhaust adjustment mechanism; the exhaust adjustment mechanism comprises a static plate, a dynamic plate, a water-blocking and air-permeable component and a knob from the inside to the outside, the static plate is provided with a boss which is installed and fixed corresponding to the limiting slot on the inner side of the screw sleeve, a static air hole is provided on the static plate, the dynamic plate is sealingly and rotatably connected with the static plate, and an air hole is provided on the dynamic plate, an auxiliary air hole is provided next to the air hole of the dynamic plate, the auxiliary air hole and the dynamic air hole both correspond to the air hole of the static plate, the knob is also provided with a corresponding air hole, the static plate, the dynamic plate, the water-blocking and air-permeable component and the knob are fixedly connected in sequence, and the pressure cap is pressed tightly on the knob.

[0009] Preferably, a positioning column is provided at the bottom of the knob, and the positioning column passes through the water-blocking and air-permeable component and the moving plate in sequence downward and extends out of the bottom of the moving plate.

[0010] Preferably, a sound prompt device is provided in the exhaust adjustment structure, and the sound prompt device is composed of a positioning glass bead or a spring and a steel ball; at the same time, an adjustment prompt mark is provided on the pressure cap.

[0011] Preferably, the water-blocking and breathable component includes a waterproof and breathable membrane and a support layer, wherein the waterproof and breathable membrane is bonded to the support layer, and the support layer is located on the back water side of the waterproof and breathable membrane, and the support layer is made of a rigid microporous structural material, and the micropore diameter of the support layer is larger than the micropore diameter of the waterproof and breathable membrane; the waterproof and breathable membrane is bonded to the moving plate avoiding the auxiliary air holes and forms a seal with the parts of the moving plate except the air holes and the auxiliary air holes.

[0012] Preferably, the support layer is a rigid microporous structure layer formed by a metal microporous plate.

[0013] Preferably, the support layer is a rigid microporous structure layer formed by metal sintering.

[0014] Preferably, the support layer is a rigid microporous structure layer formed by a ceramic microporous plate.

[0015] Preferably, a flexible supporting layer made of non-woven fabric is provided between the waterproof and breathable membrane and the supporting layer.

[0016] Preferably, the diameter of the micropores of the waterproof breathable membrane is less than 0.1 micrometers, and the diameter of the micropores of the support layer is larger than the micrometer-level pore diameter of water molecule clusters.

[0017] The beneficial effects of the present invention are as follows: (1) The present invention can be used alone or installed on the exhaust port of existing equipment. It only needs to be screwed onto the exhaust port of the corresponding equipment, and the installation is convenient and fast without the need to redesign and improve the existing equipment.

[0018] (2) This device has three working states: manual exhaust, automatic exhaust, and closed exhaust, and the switching between the three working states is relatively convenient and simple.

[0019] (3) The exhaust adjustment mechanism adopts a ceramic static plate, a ceramic moving plate, and a ceramic knob, thereby increasing the wear-resistant sealing performance and ensuring the stable and reliable operation.

[0020] (4) The water-blocking and breathable component adopts a structure of a membrane plus a support layer. Due to the existence of the rigid microporous structure layer, the rigid support layer will not deform even under high pressure differences, thereby improving the reliability during operation under relatively high pressure differences; especially when it is made of a metal microporous plate or a ceramic microporous plate, the micropore diameter on the support layer can reach the micron level equivalent to the pore diameter of the waterproof and breathable membrane, so that it can provide good support for the waterproof and breathable membrane and will not cause the membrane to deform, improving the reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an exploded view of the present invention;

[0022] Figure 2 is a structural diagram of the present invention;

[0023] Figure 3 is Figure 2 a cross-sectional view taken along the C-C direction in

[0024] Figure 4 is Figure 2 a top view of DETAILED DESCRIPTION OF THE INVENTION

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] As Figures 1 to 4 shown, the present invention includes a screw sleeve 3. One end of the screw sleeve 3 is an air inlet end, and the other end is an exhaust end. A multi-sided nut 4 is provided in the middle of the screw sleeve 3. An inclined pad 2 is provided on the screw sleeve 3, and the inclined pad 2 abuts against the lower part of the multi-sided nut 4. A filter screen 1 is provided inside the air inlet end, and an annular installation step is provided inside the exhaust end. An O-ring 5, an exhaust adjustment mechanism A, and a compression cap 7 are sequentially installed on the annular installation step from the inside to the outside. The compression cap 7 is threadedly connected to the exhaust end, and a hollow 6 for exposing the top of the exhaust adjustment mechanism A is provided in the middle of the compression cap 7.

[0027] The exhaust gas regulating mechanism A sequentially includes a ceramic static plate A10, a ceramic moving plate A8, a water-blocking and breathable component B, and a ceramic knob A6 from the inside to the outside. The ceramic static plate A10 is placed on the O-ring 5 and fixed in the card slot of the annular installation step. Two static air holes A9 are provided on the ceramic static plate A10. The ceramic moving plate A8 is hermetically and rotatably connected to the ceramic static plate A10, and two moving air holes A7 corresponding to the static air holes A9 are provided on the ceramic moving plate A8. A first auxiliary air hole A2 is provided beside the moving air hole A7. The ceramic static plate A10, the ceramic moving plate A8, the water-blocking and breathable component B, and the ceramic knob A6 are sequentially fixedly connected, and the compression cap 7 presses tightly on the ceramic knob A6.

[0028] A positioning post A3 is provided at the bottom of the ceramic knob A6. The positioning post A3 sequentially passes through the water-blocking and breathable component B and the ceramic moving plate A8 downward and extends out of the bottom of the ceramic moving plate A8. Three positioning bead grooves A1 are provided on the ceramic static plate A10 corresponding to the rotation track of the positioning beads.

[0029] Two anti-fooling posts are provided between the ceramic moving plate A8 and the ceramic knob A6. The anti-fooling posts penetrate through the water-blocking and breathable component B through the anti-fooling through holes A7.

[0030] An arrow groove A5 is provided at the top of the ceramic knob A6. A manual exhaust indication mark 8, an automatic exhaust indication mark 9, and a closed exhaust indication mark 10 are provided on the compression cap 7.

[0031] The water-blocking and breathable component B includes a waterproof and breathable membrane B2 and a support layer B1. The waterproof and breathable membrane B2 is attached to the support layer B1, and the support layer B1 is located on the water-back side of the waterproof and breathable membrane B2. The support layer B1 is made of a rigid microporous structure material, and the micropore diameter of the support layer B1 is larger than that of the waterproof and breathable membrane B2. Second auxiliary air holes B3 and A4 corresponding to the first auxiliary air hole A2 are provided on both the waterproof and breathable membrane B2 and the compression cap B7.

[0032] The support layer B1 can adopt different material structures. For example, the support layer B1 is a rigid microporous structure layer formed by a metal microporous plate, the support layer B1 is a rigid microporous structure layer formed by metal sintering, and the support layer B1 is a rigid microporous structure layer formed by a ceramic microporous plate.

[0033] With the above structure, due to the existence of the rigid microporous structure layer, even under high pressure differences, the rigid support layer B1 will not deform, and thus the waterproof and breathable membrane B2 will not creep or bend, thereby improving the overall reliability under high pressure differences. Especially when using a metal microporous plate or a ceramic microporous plate for molding, the micropore diameter on the support layer B1 can reach the micron level equivalent to that of the waterproof and breathable membrane B2. For example, the micropore diameter of the waterproof and breathable membrane B2 is less than 0.1 micron, and the micropore diameter of the support layer B1 is at the micron level, so that it can provide good support for the waterproof and breathable membrane B2, preventing the membrane from deforming and improving the reliability.

[0034] A flexible support layer made of non-woven fabric can also be provided between the waterproof and breathable membrane B2 and the support layer B1. After the waterproof and breathable membrane B2 and the flexible support layer are compounded into an integral structure, and then the rigid microporous structure layer is added, the double insurance further improves the overall reliability against high pressure.

[0035] On the other hand, when the pore diameter of the waterproof and breathable membrane B2 is set to be less than 0.1 um, the water pressure resistance can be effectively improved, and the reliability under high pressure differences can be increased.

[0036] To further increase the overall compressive resistance, two support layers B1 can be provided. The two support layers B1 are respectively attached to both sides of the waterproof and breathable membrane B2. At this time, appropriate rigid micropore sizes of the support layer B1 should be selected to avoid blocking the rigid micropores of the inner support layer B1 due to the surface tension of water and preventing gas from passing through.

[0037] The present invention can be used alone or installed on the exhaust port of existing equipment. Just screw the device onto the corresponding exhaust port of the equipment. The installation is convenient and fast. During use, according to actual needs, turn the arrow groove A5 with a screwdriver or a one-yuan coin to drive the ceramic moving piece A8, the water-blocking and breathable component B, and the ceramic knob A6 to rotate to different working states, so as to switch between the three states of manual exhaust, automatic exhaust, and closed exhaust.

[0038] Case description of switching states among the three states of manual exhaust, automatic exhaust, and closed exhaust:

[0039] Application scenario: Install this automatic exhaust device on a radiator

[0040] When first filling the radiator at the heat dissipation end in the heating system with water, there is a large amount of gas inside the radiator that needs to be discharged. At this time, use a screwdriver or a one-yuan coin to turn the arrow groove A5 to drive the ceramic moving piece A8, the water-blocking and air-permeable component B, and the ceramic knob A6 with the arrow corresponding to the manual exhaust device logo 8. At this time, the ventilation hole A7, the first auxiliary ventilation hole A2 provided on the ceramic moving piece A8 in the exhaust mechanism, and the ventilation hole B3 on the corresponding water-blocking and air-permeable component B are all interconnected with the static ventilation hole A9 on the ceramic static piece A10. At this time, a large amount of gas inside the radiator is discharged. When water is discharged, use a screwdriver or a one-yuan coin to turn the arrow groove A5 to drive the ceramic moving piece A8, the water-blocking and air-permeable component B, and the ceramic knob A6 with the arrow corresponding to the closed exhaust device logo 10. At this time, the ventilation hole A7, the first auxiliary ventilation hole A2 provided on the ceramic moving piece A8 in the exhaust mechanism, and the ventilation hole B3 on the corresponding water-blocking and air-permeable component B are all completely staggered from the static ventilation hole A9 on the ceramic static piece A10 to form a seal. At this time, a high-pressure pressure retention test can be carried out on the tightness of the entire heating system to avoid water leakage. After confirming that there is no water leakage point, use a screwdriver or a one-yuan coin to turn the arrow groove A5 to drive the ceramic moving piece A8, the water-blocking and air-permeable component B, and the ceramic knob A6 with the arrow corresponding to the manual exhaust device logo 8. At this time, the ventilation hole A7, the first auxiliary ventilation hole A2 provided on the ceramic moving piece A8 in the exhaust mechanism, and the ventilation hole B3 on the corresponding water-blocking and air-permeable component B are all interconnected with the static ventilation hole A9 on the ceramic static piece A10. At this time, the radiator is depressurized. After reaching the appropriate working pressure, use a screwdriver or a one-yuan coin to turn the arrow groove A5 to drive the ceramic moving piece A8, the water-blocking and air-permeable component B, and the ceramic knob A6 with the arrow corresponding to the automatic exhaust device logo 9. At this time, the ventilation hole A7 provided on the ceramic moving piece A8 in the exhaust mechanism is interconnected with the static ventilation hole A9 on the ceramic static piece A10. At this time, the water-blocking and air-permeable property of the water-blocking and air-permeable component B itself discharges the gas inside the entire heating system to avoid poor heat dissipation caused by air blockage and affecting the heating effect.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic exhaust device convenient for quick installation, comprising a screw sleeve, one end of the screw sleeve is the air inlet end, and the other end is the exhaust end. A limit card slot is arranged inside the screw sleeve, and it is characterized in that, An installation step is provided inside the exhaust end. A sealing mechanism, an exhaust adjustment mechanism, and a compression cap are installed on the installation step. The compression cap is connected to the exhaust end and has a hollow in the middle for exposing the top of the exhaust adjustment mechanism. The exhaust adjustment mechanism includes a stationary vane, a moving vane, a water-blocking and breathable component, and a knob from the inside out. A boss is provided on the stationary vane and is installed and fixed corresponding to the inner limit card slot of the screw sleeve. Static ventilation holes are provided on the stationary vane. The moving vane is in sealed rotational connection with the stationary vane, and ventilation holes are provided on the moving vane. Auxiliary ventilation holes are provided beside the ventilation holes on the moving vane. The auxiliary ventilation holes and the moving ventilation holes correspond to the ventilation holes on the stationary vane. Corresponding ventilation holes are also provided on the knob. The stationary vane, the moving vane, the water-blocking and breathable component, and the knob are fixedly connected in sequence, and the compression cap is tightly pressed on the knob. The water-blocking and breathable component includes a waterproof breathable membrane and a support layer. The waterproof breathable membrane is attached to the support layer, and the support layer is located on the backwater side of the waterproof breathable membrane. The support layer is made of a rigid microporous structure material, and the micropore diameter of the support layer is larger than the micropore diameter of the waterproof breathable membrane. The waterproof breathable membrane is attached to the moving vane avoiding the auxiliary ventilation holes and forms a seal with the parts on the moving vane other than the ventilation holes and the auxiliary ventilation holes. The support layer is a rigid microporous structure layer formed by a metal microporous plate, or a rigid microporous structure layer formed by metal sintering, or a rigid microporous structure layer formed by a ceramic microporous plate. A flexible support layer made of non-woven fabric is provided between the waterproof breathable membrane and the support layer.

2. The automatic exhaust device convenient for quick installation according to claim 1, characterized in that, A positioning post is provided at the bottom of the knob. The positioning post sequentially passes through the water-blocking and breathable component and the moving vane downward and extends out of the bottom of the moving vane.

3. The automatic exhaust device convenient for quick installation according to claim 2, characterized in that, A sound prompting device is provided inside the exhaust adjustment structure. The sound prompting device consists of a positioning glass bead or a spring and a steel ball. At the same time, an adjustment prompting mark is provided on the compression cap.

4. The automatic exhaust device convenient for quick installation according to claim 1, characterized in that, The micropore diameter of the waterproof breathable membrane is less than 0.1 micron, and the micropore diameter of the support layer is a micron-level pore diameter larger than the water molecule cluster.

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