A rainproof conical wind cap

Abstract

The present invention relates to a rain-proof conical wind cap, which is applied to mechanical ventilation engineering and is suitable for the high-altitude discharge of general gases, toxic and harmful gases, and dust-containing gases. An upper umbrella-shaped cap, a lower umbrella-shaped cap, a diversion water-blocking ring, a connecting pipe, and an outer water-dispersing cap are arranged in sequence from top to bottom. An upper conical cap is arranged on the outside of the upper umbrella-shaped cap, and a lower conical cap is arranged on the outside of the lower umbrella-shaped cap. The apex of the lower umbrella-shaped cap is higher than the contact surface between the diversion water-blocking ring and the connecting pipe; the diversion water-blocking ring is a frustum of a cone with a transparent upper and lower circular surface. The frustum of the cone has a certain opening angle and is in the shape of a flared opening. The diameter of the smaller end is equal to the diameter of the connecting pipe and is tightly combined with it, and the diameter of the larger end is equal to the diameter of the bottom of the lower umbrella-shaped cap; the connecting surfaces between the diversion water-blocking ring, the connecting pipe, and the outer water-dispersing cap are continuously welded to ensure the tightness of the connecting surface. Through the rain-collecting and drainage components of this device, rainwater can be discharged smoothly and in a timely manner; the discharging device has an optimal flow field and the smallest local resistance coefficient.

Description

Technical Field

[0001] The present invention relates to a rain-proof conical wind cap, which is applied to mechanical ventilation engineering and is suitable for the high-altitude discharge of general gases, toxic and harmful gases, and dust-containing gases. The top exhaust port of the device can cause a certain lift of the air flow, which is beneficial to the atmospheric dilution of the discharged gas; the special rain-collecting and drainage components enable the rainwater to flow out smoothly and in a timely manner, avoiding the rainwater and the rainwater containing harmful substances from flowing down along the inner and outer walls of the pipeline, thereby eroding the pipeline. Background Art

[0002] The wind cap is an end device installed at the end of the outdoor exhaust system and is used at the outlet of the exhaust system. In the mechanical exhaust system, the commonly used ones are mainly the umbrella-shaped wind cap and the conical wind cap. When the discharged gas contains toxic and harmful gases and dust-containing gases, the general umbrella-shaped wind cap is not conducive to the atmospheric dilution of the discharged substances; although the conical wind cap given in the national standard atlas can solve the problem of "air flow lift and atmospheric dilution", in rainy days, the rainwater collected at the top exhaust port cannot be discharged in a timely manner. Part of it enters the pipeline and erodes the inner wall of the pipeline, even endangering the normal operation of the system, and the other part flows down along the outer wall of the exhaust chimney, eroding the outer wall of the pipeline. Summary of the Invention

[0003] The purpose of the present invention is to provide a rain-proof conical wind cap, when the gas is discharged through the discharge port, the air flow has a certain lift; through the rain-collecting and drainage components of the device, the rainwater can flow out smoothly and in a timely manner; and the discharging device has an optimal flow field and the smallest local resistance coefficient.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A rain-proof conical wind cap, an upper umbrella-shaped cap, a lower umbrella-shaped cap, a diversion water-blocking ring, a connecting pipe, and an outer water-dispersing cap are arranged in sequence from top to bottom. An upper conical cap is arranged outside the upper umbrella-shaped cap, and a lower conical cap is arranged outside the lower umbrella-shaped cap.

[0006] The apex of the lower umbrella-shaped cap is higher than the contact surface between the diversion water-blocking ring and the connecting pipe; the diversion water-blocking ring is a frustum of a cone, with the upper and lower circular surfaces being transparent. The frustum of the cone has a certain flare angle and is in the shape of a flared opening. The diameter of the smaller end is equal to the diameter of the connecting pipe and is tightly combined with it, and the diameter of the larger end is equal to the diameter of the bottom of the lower umbrella-shaped cap; the connecting surfaces between the diversion water-blocking ring, the connecting pipe, and the outer water-dispersing cap are continuously welded to ensure the tightness of the connecting surfaces.

[0007] The cone angle of the upper conical cap is greater than the cone angle of the lower conical cap; the bottom of the upper conical cap and the bottom of the lower conical cap are arranged opposite to each other and are welded and connected at the joint. The bottom of the upper conical cap protrudes from the bottom of the lower conical cap to form a cornice with a certain length.

[0008] Drainage holes are formed on the side surface of the cone of the lower conical cap, and the drainage holes are arranged in a staggered manner in a radial direction up and down. The apex of the drainage hole is not higher than the top surface of the diversion water-blocking ring.

[0009] There is an annular gap with a certain width between the apex of the lower conical cap and the connecting pipe; an exhaust chimney is provided outside the connection of the connecting pipe; the connecting flange is placed at the corner of the joint between the connecting pipe and the outer water-dispersing cap, and is matched and connected with the connecting pipe and the outer water-dispersing cap, and the externally provided exhaust chimney is fixedly connected by bolts.

[0010] The cone angle of the upper umbrella-shaped cap is greater than that of the lower umbrella-shaped cap; a toothed ring is formed at the edge of the bottom side of the umbrella of the upper umbrella-shaped cap, and adjacent toothed rings are fitted into drip blades in an arc shape; the bottom of the umbrella of the upper umbrella-shaped cap is arranged opposite to the bottom of the umbrella of the lower umbrella-shaped cap, and the joint is welded and connected; the non-opening part of the bottom of the umbrella of the upper umbrella-shaped cap protrudes from the bottom of the umbrella of the lower umbrella-shaped cap to form a cornice with a certain length.

[0011] The inner support fixedly supports the combination of the upper umbrella-shaped cap and the lower umbrella-shaped cap; the outer support fixedly supports the upper conical cap, the lower conical cap, the inner support and the components supported by it; the inner support and the outer support are evenly arranged along the radial direction.

[0012] The connection contact surfaces between the upper conical cap and the lower conical cap, and between the upper umbrella-shaped cap and the lower umbrella-shaped cap are on the same horizontal line; the central axes of the upper conical cap, the lower conical cap, the upper umbrella-shaped cap, the lower umbrella-shaped cap, the diversion water-blocking ring, the connecting pipe, and the outer water-dispersing cap are all on the same central axis.

[0013] The outer water-dispersing cap is a frustum-shaped cavity, and the smaller end is used as the top surface and is provided with a round hole for sealing connection with the connecting pipe, and the side surface expands outward, with a flare angle of 90 ○ 。

[0014] The upper conical cap, the lower conical cap, the connecting pipe, and the outer water-dispersing cap form an external enclosure, and the internal space of this enclosure is used as an air flow channel to discharge gas, and the upper part of the external space blocks rain, and the lower part discharges water; the upper umbrella-shaped cap, the lower umbrella-shaped cap, the diversion water-blocking ring, and the connecting pipe form an internal enclosure, and the upper umbrella-shaped cap of this enclosure collects rainwater and diverts the rainwater to drain it into the rainwater collection and drainage trough; the lower umbrella-shaped cap, the diversion water-blocking ring, and the connecting pipe divert gas to reduce the air flow resistance; the diversion water-blocking ring, the connecting pipe, and the lower conical cap form a rainwater collection and drainage trough, and this rainwater collection and drainage trough collects the rainwater captured by the upper umbrella-shaped cap, the inner wall of the upper conical cap, and the space between the two; the water is discharged through the drain holes opened on the side surface of the cone of the lower conical cap and the annular gap between the apex of the lower conical cap and the connecting pipe.

[0015] The beneficial effects obtained by the present invention are as follows:

[0016] When this wind cap is installed at the end of the exhaust chimney of the mechanical exhaust system, the problems that can be solved and the effects are as follows:

[0017] When the discharged gas is discharged through the wind cap, the air flow has a certain lift, so that the toxic and harmful gases and the dust-containing gases are further diluted at high altitude, which is beneficial to the diffusion of the discharged gas.

[0018] The rain-collecting and drainage components and structures designed for the wind cap can enable rainwater to flow out smoothly and in a timely manner, preventing rainwater and rainwater containing harmful substances from flowing down along the inner and outer walls of the pipeline, thereby eroding the pipeline and ensuring the normal operation of the exhaust system.

[0019] When the exhausted gas passes through the inner chamber of the wind cap, it has an optimal flow field, and the wind cap has a small local resistance coefficient. Brief Description of the Drawings

[0020] Figure 1 It is the overall drawing of a rain-proof conical wind cap;

[0021] Figure 2 It is the side expansion view of the lower conical cap;

[0022] Figure 3 It is the side expansion view of the upper umbrella-shaped cap;

[0023] In the figure: 1. Upper conical cap; 2. Lower conical cap; 3. Upper umbrella-shaped cap; 4. Lower umbrella-shaped cap; 5. Flow guide water-blocking ring; 6. Connecting pipe; 7. Outer water-dispersing cap; 8. Connecting flange; 9. Inner support; 10. Outer support. Detailed Description of the Preferred Embodiment

[0024] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0025] Referring to the drawings, an embodiment is provided, taking the wind cap with a specification of D500 as an example:

[0026] The components and quantities included in the wind cap are as follows: one upper conical cap 1; one lower conical cap 2; one upper umbrella-shaped cap 3; one lower umbrella-shaped cap 4; one flow guide water-blocking ring 5; one connecting pipe 6; one outer water-dispersing cap 7; one connecting flange 8; four inner supports 9; and four outer supports 10.

[0027] The overall material of the wind cap is made of metal. The upper conical cap 1, lower conical cap 2, upper umbrella-shaped cap 3, lower umbrella-shaped cap 4, flow guide water-blocking ring 5, connecting pipe 6, and outer water-dispersing cap 7 are made of steel plates; the connecting flange 8 is made of angle steel; and the inner support 9 and outer support 10 are made of steel plates.

[0028] The central axes of the components such as the upper conical cap 1, lower conical cap 2, upper umbrella-shaped cap 3, lower umbrella-shaped cap 4, flow guide water-blocking ring 5, connecting pipe 6, outer water-dispersing cap 7, and connecting flange 8 should all be on the same central axis and be connected in a certain rule.

[0029] The upper umbrella-shaped cap 3, lower umbrella-shaped cap 4, flow guide water-blocking ring 5, connecting pipe 6, and outer water-dispersing cap 7 are arranged in sequence from top to bottom. The upper conical cap 1 is arranged outside the upper umbrella-shaped cap 3, and the lower conical cap 2 is arranged outside the lower umbrella-shaped cap 4.

[0030] The upper conical cap 1, the lower conical cap 2, the connecting pipe 6, and the outer water-dispersing cap 7 form an external enclosure. This enclosure: has an internal space as an air flow channel to discharge gas, and the upper part of the external space blocks rain, while the lower part drains water.

[0031] The upper umbrella-shaped cap 3, the lower umbrella-shaped cap 4, the diversion and water-blocking ring 5, and the connecting pipe 6 form an internal enclosure. This enclosure: the upper umbrella-shaped cap 3 collects rainwater and diverts it to the rainwater collection and drainage trough; the lower umbrella-shaped cap 4, the diversion and water-blocking ring 5, and the connecting pipe 6 divert gas and reduce the air flow resistance.

[0032] The diversion and water-blocking ring 5, the connecting pipe 6, and the lower conical cap 2 form a rainwater collection and drainage trough. This rainwater collection and drainage trough: collects the rainwater captured by the upper umbrella-shaped cap 3, the inner wall of the conical cap, and the space between the two; the water drains through the water drainage holes opened on the side surface of the cone of the lower conical cap 2 and the annular gap between the top of the cone of the lower conical cap 2 and the connecting pipe 6.

[0033] The connecting contact surface between the upper conical cap 1 and the lower conical cap 2, and the connecting contact surface between the upper umbrella-shaped cap 3 and the lower umbrella-shaped cap 4 are located on the same horizontal line.

[0034] The top of the lower umbrella-shaped cap 4 is higher than the contact surface between the diversion and water-blocking ring 5 and the connecting pipe 6;

[0035] The cone angle of the upper conical cap 1 is greater than the cone angle of the lower conical cap 2;

[0036] The bottom of the cone of the upper conical cap 1 and the bottom of the cone of the lower conical cap 2 are arranged opposite to each other, and are welded at the joint. The bottom of the cone of the upper conical cap 1 protrudes from the bottom of the cone of the lower conical cap 2 to form a cornice with a certain length (measured by the generatrix);

[0037] Water drainage holes are opened on the side surface of the cone of the lower conical cap 2, and the water drainage holes are arranged in a staggered manner in the up and down directions in a radial pattern. The vertex of the water drainage hole is not higher than the top surface of the diversion and water-blocking ring 5; the opening position of the water drainage hole avoids the inner support 9 and the outer support 10;

[0038] There is an annular gap with a certain width between the top of the cone of the lower conical cap 2 and the connecting pipe 6 for draining water;

[0039] The cone angle of the upper umbrella-shaped cap 3 is greater than the cone angle of the lower umbrella-shaped cap 4;

[0040] Toothed rings are opened on the side edge of the bottom of the umbrella of the upper umbrella-shaped cap 3, and adjacent toothed rings are fitted into dripping blades in an arc shape;

[0041] The bottom of the umbrella of the upper umbrella-shaped cap 3 and the bottom of the umbrella of the lower umbrella-shaped cap 4 are arranged opposite to each other, and are welded at the joint. The non-opening part of the bottom of the umbrella of the upper umbrella-shaped cap 3 protrudes from the bottom of the umbrella of the lower umbrella-shaped cap 4 to form a cornice with a certain length;

[0042] The diversion and water-blocking ring 5 is a frustum of a cone with a transparent upper and lower circular surface. The frustum of a cone has a certain opening angle and is in the shape of a flared trumpet. The diameter of the smaller end is equal to the diameter of the connecting pipe 6 and is tightly combined with it, and the diameter of the larger end is equal to the diameter of the bottom of the umbrella of the lower umbrella-shaped cap.

[0043] The connecting pipe 6 is used to connect to an external exhaust duct, and the cylinder body has a certain height.

[0044] The outer water-dispersing cap 7 is a frustum-shaped cavity. The smaller end serves as the top surface and is provided with a round hole for sealing connection with the connecting pipe 6; the side surface expands outward, with a flare angle of 90 ○ , which is used to divert rainwater.

[0045] The connecting surfaces between the flow-guiding water-blocking ring 5, the connecting pipe 6, and the outer water-dispersing cap 7 should be continuously welded to ensure the tightness of the connecting surfaces;

[0046] The connecting flange 8 is placed at the corner of the joint between the connecting pipe 6 and the outer water-dispersing cap 7, and is matched and connected with the connecting pipe 6 and the outer water-dispersing cap 7, and is fixedly connected to the external exhaust duct through bolts.

[0047] The inner support 9 is used to fixedly support the combination of the upper umbrella-shaped cap 3 and the lower umbrella-shaped cap 4, so that the load acts uniformly on the side plate of the lower conical cap;

[0048] The outer support 10 is used to fixedly support the upper conical cap 1, the lower conical cap 2, the inner support 9 and the components supported by it. Through the outer support 10, all the loads act on the connecting flange 8 and are finally transmitted to the connected external exhaust duct.

[0049] The inner support 9 and the outer support 10 are uniformly arranged along the radial direction of the wind cap and correspond one by one; according to the size of the wind cap, the number of inner supports and outer supports established is different, generally 3 to 8 pieces respectively, and four pieces are used in this embodiment.

[0050] A rainproof conical wind cap, which includes an upper conical cap, a lower conical cap, an upper umbrella-shaped cap, a lower umbrella-shaped cap, a flow-guiding water-blocking ring, a connecting pipe, an outer water-dispersing cap, a connecting flange, an inner support, an outer support, etc.

[0051] The central axes of the upper conical cap, the lower conical cap, the upper umbrella-shaped cap, the lower umbrella-shaped cap, the flow-guiding water-blocking ring, the connecting pipe, the outer water-dispersing cap, the connecting flange and other components should be on the same central axis and be combined and connected according to certain rules.

[0052] The upper conical cap, the lower conical cap, the connecting pipe, and the outer water-dispersing cap form an external enclosure. For this enclosure: the internal space serves as an air flow channel to discharge gas, and the upper part of the external space blocks rain, and the lower part drains water.

[0053] The upper umbrella-shaped cap, the lower umbrella-shaped cap, the flow-guiding water-blocking ring, and the connecting pipe form an internal enclosure. For this enclosure: the upper umbrella-shaped cap collects rainwater and diverts it to the rain collection and drainage trough; the lower umbrella-shaped cap, the flow-guiding water-blocking ring, and the connecting pipe divert gas and reduce the air flow resistance.

[0054] The rain-collecting and water-discharging trough is composed of a diversion water-blocking ring, a connecting pipe, and a lower conical cap. The rain-collecting and water-discharging trough: collects the rainwater trapped by the upper umbrella-shaped cap, the inner wall of the conical cap, and the space between the two; discharges water through the water-discharging holes opened on the side of the apex of the lower conical cap and the annular gap between the apex of the lower conical cap and the connecting pipe.

[0055] The bottom of the upper conical cap and the bottom of the lower conical cap are arranged opposite to each other, and the diameter of the bottom of the upper conical cap is larger than that of the bottom of the lower conical cap to form a cornice of a certain length, so that the rainwater on the outer surface of the upper conical cap falls to the ground along the cornice; water-discharging holes are opened on the side of the cone of the lower conical cap, and the apex of the water-discharging holes is not higher than the top of the rain-collecting and water-discharging trough; there is an annular gap between the apex of the lower conical cap and the connecting pipe for water discharge;

[0056] Openings are formed on the side edge of the bottom of the upper umbrella-shaped cap to form a toothed ring, and this toothed ring serves as a dripping blade, enabling the rainwater to flow smoothly into the lower rain-collecting and water-discharging trough, and at the same time increasing the flow cross-section of the internal space;

[0057] The bottom of the upper umbrella-shaped cap and the bottom of the lower umbrella-shaped cap are arranged opposite to each other, and the diameter of the bottom of the unopened part of the upper umbrella-shaped cap is larger than that of the bottom of the lower umbrella-shaped cap to form a cornice of a certain length, so that the rainwater on the outer surface of the upper umbrella-shaped cap flows into the lower rain-collecting and water-discharging trough along the cornice;

[0058] The diversion water-blocking ring has a certain opening angle and is in the shape of a flared opening. The diameter of the smaller end is equal to the diameter of the connecting pipe and is hermetically connected to it, and the diameter of the larger end is equal to the diameter of the bottom of the lower umbrella-shaped cap.

[0059] The connecting pipe is used to connect to the exhaust duct, enabling the air flow in the exhaust duct to flow smoothly into the wind cap cavity; the connecting pipe is lower than the top of the lower umbrella-shaped wind cap.

[0060] The outer water-dispersing cap is a frustum-shaped cavity. The smaller end serves as the top surface and is provided with a round hole with the same diameter as the connecting pipe, and the two are hermetically connected; the side expands outward for guiding the rainwater discharged from the upper water-collecting and discharging trough.

[0061] The connecting flange is placed at the corner part of the joint of the connecting pipe and the outer water-dispersing cap, and is matched and connected with the connecting pipe and the outer water-dispersing cap, and is fixedly connected to the externally provided exhaust duct through bolts.

[0062] The inner support is used to fixedly support the combination of the upper umbrella-shaped cap and the lower umbrella-shaped cap, so that the load acts on the side plate of the lower conical cap;

[0063] The outer support is used to fixedly support the upper conical cap, the lower conical cap, the inner support and the components supported by it. Through the outer support, all the loads act on the connecting flange and are finally transmitted to the externally connected exhaust duct.

[0064] The inner support and the outer support are arranged evenly along the radial direction of the wind cap and correspond to each other one by one; according to the size of the wind cap, the number of the inner support and the outer support pieces established is different.

[0065] The central axes of the upper conical cap, lower conical cap, upper umbrella cap, lower umbrella cap, diversion and water-blocking ring, connecting pipe, outer water-dispersing cap, connecting flange and other components shall be on the same central axis.

[0066] The connecting contact surfaces between the upper conical cap and the lower conical cap, and between the upper umbrella cap and the lower umbrella cap are located on the same horizontal plane.

[0067] The minimum flow-through cross-sections of the upper conical cap, diversion and water-blocking ring, and outer water-dispersing cap are not less than the flow-through cross-section of the connecting pipe.

[0068] The bottom diameter of the upper conical cap is larger than the bottom diameter of the lower conical cap to form a cornice of a certain length;

[0069] Drainage holes are provided on the side surface of the cone body of the lower conical cap ( Figure 2 inside the ring), and the vertices of the drainage holes are not higher than the diversion and water-blocking ring; the opening positions of the drainage holes avoid the inner support and outer support;

[0070] An annular gap is provided between the top of the lower conical cap and the connecting pipe;

[0071] Openings are formed on the edge of the bottom side of the upper umbrella cap to form a toothed ring, and this toothed ring is used as a drip vane to divert rainwater; the toothed shape includes but is not limited to circular and triangular shapes;

[0072] The bottom diameter of the umbrella corresponding to the non-opening part of the upper umbrella cap is larger than the bottom diameter of the lower umbrella cap to form a cornice of a certain length;

[0073] The diversion and water-blocking ring has a certain flare angle and is in the shape of a flared trumpet. The diameter of the smaller end is equal to the diameter of the connecting pipe and is hermetically connected to it, and the diameter of the larger end is equal to the bottom diameter of the lower umbrella cap.

[0074] The connecting pipe is used to connect to the exhaust duct, and the annular surface at the connection between the connecting pipe and the diversion and water-blocking ring should be lower than the top of the lower umbrella-shaped wind cap.

[0075] The outer water-dispersing cap is a frustum-shaped cavity. The smaller end serves as the top surface and is provided with a circular hole with the same diameter as the connecting pipe, and the two are hermetically connected; the side surface flares outwards to divert the rainwater discharged from the upper water-collecting and draining trough.

[0076] The connecting flange is placed at the corner of the joint between the connecting pipe and the outer water-dispersing cap, is matched and connected with the connecting pipe and the outer water-dispersing cap, and is fixedly connected to the externally provided exhaust duct through bolts.

[0077] The inner support is used to fixedly support the combination of the upper umbrella cap and the lower umbrella cap, so that the load acts on the side plate of the lower conical cap;

[0078] The outer support is used to fixedly support the upper conical cap, the lower conical cap, the inner support and the components supported thereby. The load is entirely applied to the connecting flange through the outer support and finally transmitted to the connected peripheral exhaust duct.

[0079] The inner support and the outer support are arranged uniformly along the radial direction of the wind cap and correspond to each other one by one. According to the size of the wind cap, the number of the inner support and the outer support is different, generally 3 to 8 pieces respectively.

[0080] A rainproof conical wind cap, the device comprises an upper conical cap, a lower conical cap, an upper umbrella-shaped cap, a lower umbrella-shaped cap, a diversion water retaining ring, a connecting pipe, an outer water-dispersing cap, a connecting flange, an inner support, an outer support, etc. The upper conical cap, the lower conical cap, the connecting pipe and the outer water-dispersing cap form an external enclosure; the upper umbrella-shaped cap, the lower umbrella-shaped cap, the diversion water retaining ring and the connecting pipe form an internal enclosure; the diversion water retaining ring, the connecting pipe and the lower conical cap form a rain collecting and draining trough; the outer water-dispersing cap is a frustum-shaped cavity body and is placed at the lowermost part of the wind cap as a part of the wind cap. Each part is combined in a certain order and is connected by matching the connecting flange, the inner support, the outer support and the joint surfaces of each component. The components and structures involved in this wind cap jointly ensure the lift of the air flow when the wind cap discharges gas, the smooth discharge of the rainwater on the outer surface of the wind cap and the rainwater inside the wind cap cavity, and the optimal flow field and smaller local resistance coefficient in the inner cavity of the wind cap.

Claims

1. A rainproof conical wind cap, characterized in that: The upper umbrella-shaped cap, lower umbrella-shaped cap, flow guiding water baffle ring, connecting pipe, and outer water dispersing cap are arranged in sequence from top to bottom. A upper conical cap is arranged on the outside of the upper umbrella-shaped cap, and a lower conical cap is arranged on the outside of the lower umbrella-shaped cap; The cone angle of the upper umbrella-shaped cap is greater than that of the lower umbrella-shaped cap; a toothed ring is opened at the edge of the bottom side of the upper umbrella-shaped cap, and adjacent toothed rings are fitted into dripping blades in an arc shape; the bottom of the upper umbrella-shaped cap and the bottom of the lower umbrella-shaped cap are arranged opposite to each other and are welded at the connection; the non-opening part of the bottom of the upper umbrella-shaped cap protrudes from the bottom of the lower umbrella-shaped cap to form a cornice with a certain length; The upper conical cap, lower conical cap, connecting pipe, and outer water dispersing cap form an external enclosure. The internal space of this enclosure is used as an air flow channel to discharge gas, and the upper part of the external space prevents rain, and the lower part drains water; the upper umbrella-shaped cap, lower umbrella-shaped cap, flow guiding water baffle ring, and connecting pipe form an internal enclosure. The upper umbrella-shaped cap of this enclosure collects rainwater and guides the rainwater to drain into the rainwater collection and drainage tank; the lower umbrella-shaped cap, flow guiding water baffle ring, and connecting pipe guide gas and reduce the air flow resistance; the flow guiding water baffle ring, connecting pipe, and lower conical cap form a rainwater collection and drainage tank. This rainwater collection and drainage tank collects the rainwater captured by the inner walls of the upper umbrella-shaped cap, upper conical cap, and the space between them; the drainage is discharged through the drainage holes opened on the side surface of the cone of the lower conical cap and the annular gap between the top of the lower conical cap and the connecting pipe.

2. The rainproof conical wind cap according to claim 1, characterized in that: The top of the lower umbrella-shaped cap is higher than the contact surface between the flow guiding water baffle ring and the connecting pipe; the flow guiding water baffle ring is a frustum of a cone, with the upper and lower circular surfaces being transparent. The frustum of a cone has a certain opening angle and is in the shape of a flared trumpet. The diameter of the smaller end is equal to the diameter of the connecting pipe and is tightly combined with it, and the diameter of the larger end is equal to the diameter of the bottom of the lower umbrella-shaped cap; the connecting surfaces between the flow guiding water baffle ring, connecting pipe, and outer water dispersing cap are continuously welded to ensure the tightness of the connecting surface.

3. The rainproof conical wind cap according to claim 1, characterized in that: The cone angle of the upper conical cap is greater than that of the lower conical cap; the bottom of the upper conical cap and the bottom of the lower conical cap are arranged opposite to each other and are welded at the connection. The bottom of the upper conical cap protrudes from the bottom of the lower conical cap to form a cornice with a certain length.

4. The rainproof conical wind cap according to claim 1, characterized in that: Drainage holes are opened on the side surface of the cone of the lower conical cap. The drainage holes are arranged in a staggered manner radially up and down, and the vertices of the drainage holes are not higher than the top surface of the flow guiding water baffle ring.

5. The rainproof conical wind cap according to claim 1, characterized in that: There is an annular gap with a certain width between the top of the lower conical cap and the connecting pipe; the connecting pipe is connected to an externally provided exhaust duct; the connecting flange is placed at the corner part of the joint between the connecting pipe and the outer water dispersing cap, and is matched and connected with the connecting pipe and the outer water dispersing cap, and the externally provided exhaust duct is fixedly connected through bolts.

6. The rainproof conical wind cap according to claim 1, characterized in that: The inner support fixedly supports the combination of the upper umbrella-shaped cap and the lower umbrella-shaped cap; the outer support fixedly supports the upper conical cap, lower conical cap, inner support, and the components supported by it; the inner support and the outer support are evenly arranged radially.

7. The rainproof conical wind cap according to claim 1, characterized in that: The connection contact surfaces between the upper conical cap and the lower conical cap, and between the upper umbrella-shaped cap and the lower umbrella-shaped cap are on the same horizontal line; the central axes of the upper conical cap, lower conical cap, upper umbrella-shaped cap, lower umbrella-shaped cap, flow guiding water baffle ring, connecting pipe, and outer water dispersing cap are all on the same central axis.

8. The rainproof conical wind cap according to claim 1, characterized in that: The external apron cap is a frustum cavity. The smaller end serves as the top surface and is provided with a round hole for sealed connection with the connecting pipe. The side surface flares outwards with a flare angle of 90 ○ .

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