Water accumulation prevention device for chimney of trolley furnace
By designing a trolley furnace chimney water-absorbing device with rainproof panels and curved deflectors, the problem of limited rainproof function of the existing rainproof cap structure is solved, and effectively prevents rainwater from invading and increases smoke Emission stability effect.
Patent Information
- Application Number
- CN202421058659.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The rainproof hat structure of the existing trolley furnace chimney has limited rainproof functions, especially in severe wind and rainy days, which is prone to rainwater intrusion and accumulation of water, which affects the normal operation of the equipment and reduces exhaust efficiency.
A trolley furnace chimney anti-water storage device including a rainproof cap, a first rainproof board and a second rainproof board is designed. Through the rainproof board and a curved deflector arranged step by step, the inclination angle is gradually reduced. Small rainwater flow paths reduce the possibility of rainwater intrusion and lead backflow rainwater through curved deflectors.
Effectively prevent rainwater from entering the chimney, protect the normal operation of the equipment, and improve the stability and efficiency of flue gas emissions to avoid the formation of water accumulation.
Smart Images
Figure CN222514270U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of equipment smoke exhaust, in particular to a device for preventing water accumulation in a trolley furnace chimney. Background Art
[0002] "Trolley furnace" generally refers to a type of smoke furnace used in industry, which has a mobile trolley structure. This furnace is usually used for heat treatment, sintering, drying and other processes. The material to be treated (such as metal, ceramic, etc.) can be placed on the trolley, and then the trolley is pushed into the furnace for heating treatment.
[0003] In a trolley furnace, the chimney is a passage for discharging smoke and exhaust gas generated by combustion. Considering that external water entering the chimney will interfere with the normal operation of the equipment or even cause damage to the equipment, a rain cap is usually installed at the smoke exhaust port of the chimney.
[0004] However, most of the existing rain caps have relatively simple structures and limited rain protection functions, especially during rainfall accompanied by strong winds. Rainwater can still enter the rain cap due to the influence of wind, thus affecting the normal use of the equipment and easily forming water accumulation inside the device, which is difficult to discharge. Some rain caps with windproof functions will change the shape and size of the smoke outlet, but this type of rain cap will have the problem of low exhaust efficiency, affecting the emission of exhaust gas. Utility Model Content
[0005] 1) Technical issues solved
[0006] The utility model aims to make up for the deficiencies of the prior art and provides a device for preventing water accumulation in the chimney of a trolley furnace.
[0007] 2) Technical solution
[0008] To achieve the above purpose, the utility model provides the following technical solution: a trolley furnace chimney water accumulation prevention device, comprising a rain cap, a first rain shield and a second rain shield fixedly installed from top to bottom,
[0009] A rain cap having a conical cover structure, wherein the conical contracted tip of the rain cap faces away from the first rain shield;
[0010] The first rain shield is in the shape of a truncated cone as a whole, and its cross section along the axis direction is in the shape of a trapezoid. The central axis of the first rain shield coincides with the central axis of the rain cap, and the annular contraction opening of the first rain shield faces the direction close to the rain cap;
[0011] The second rain shield is truncated cone-shaped as a whole, and its cross section along the axis direction is trapezoidal, the central axis of the second rain shield coincides with the central axis of the rain cap, and the annular contraction opening of the second rain shield faces the direction close to the rain cap; and
[0012] The arc-shaped guide plate is arranged opposite to the second rain shield, and the convex side of the arc-shaped guide plate is close to the annular contraction opening direction of the second rain shield.
[0013] Furthermore, the angle between the central axis at the tip of the rain cap and the inclined surface of the cover body is α1, and the angle range of α1 is 70°-75°.
[0014] Furthermore, the inclined plate of the first rain shield has an inclination angle of α2 relative to its central axis, and the angle range of α2 is 55°-65°.
[0015] Furthermore, the inclined plate of the second rain shield has an inclination angle of α3 relative to its central axis, and the angle range of α3 is 40°-50°.
[0016] Furthermore, the shortest distance from the first rain shield to the rain cap is L1, the shortest distance from the contraction opening of the second rain shield to the contraction opening of the first rain shield is L2, and the ratio of L1 to L2 ranges from 1.5:1 to 2:1.
[0017] Furthermore, the diameter of the conical lower bottom surface of the rain cap is larger than the diameter of the chimney smoke outlet, the circular diameter of the upper bottom surface of the first rain shield plate close to the rain cap is smaller than the diameter of the conical lower bottom surface of the rain cap, and the circular diameter of the upper bottom surface of the second rain shield plate close to the first rain shield plate is smaller than the circular diameter of the lower bottom surface of the first rain shield plate.
[0018] Furthermore, the rain cap, the first rain shield and the second rain shield are fixedly connected via a first cylindrical connecting plate.
[0019] Furthermore, the second rain shield is fixedly connected to a fixing frame, the arc-shaped guide plate is fixedly mounted on the fixing frame, and the fixing frame is fixedly mounted on the chimney.
[0020] Furthermore, the concave side of the arc-shaped guide plate faces the outer wall of the chimney.
[0021] 3) Beneficial effects:
[0022] Compared with the prior art, the utility model has the following beneficial effects:
[0023] The utility model has a rainproof cap and a first rain shield and a second rain shield arranged in stages. When it rains, the rainwater flows through in sequence from above. The design of gradually decreasing inclination angle further reduces the possibility of rainwater intrusion, protects the chimney mouth from the influence of rainwater, and helps to make smoke emission more stable. If rainwater flows back into the interior of the device, the rainwater will flow out of the chimney along the arc guide plate from the contraction interval formed between the arc guide plate and the support frame. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a half-section front view of the utility model;
[0025] Figure 2 It is a three-dimensional partial cross-sectional view of the utility model;
[0026] In the figure: 1. chimney; 2. rain cap; 3. first rain shield; 4. second rain shield; 5. support frame; 6. fixing frame; 7. arc guide plate; 8. first connecting plate; 9. second connecting plate. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0028] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0029] Combination Figure 1 to Figure 2 The device for preventing water accumulation in the chimney of a trolley furnace shown in the figure comprises a rain cap 2, a first rain shield 3 and a second rain shield 4 which are fixedly installed from top to bottom.
[0030] Specifically, Figure 1 and Figure 2 As shown, the rain cap 2 has a conical cover structure and is made of materials with good weather resistance and corrosion resistance, such as stainless steel. The diameter of the conical lower bottom surface of the rain cap 2 is larger than the diameter of the chimney 1 to be installed, and the conical contracting tip of the rain cap 2 faces away from the chimney 1, that is, the conical cover opening of the rain cap 2 faces the smoke exhaust outlet of the chimney 1.
[0031] like Figure 1 and Figure 2As shown, the first rain shield 3 is annular in structure as a whole, and its cross-section along its axial direction is trapezoidal. It is made of materials with good weather resistance and corrosion resistance, such as stainless steel. The central axis of the first rain shield 3 coincides with the central axis of the rain cap 2, and the annular contraction opening of the first rain shield 3 faces the direction close to the rain cap 2. The upper bottom surface of the first rain shield 3, that is, close to the rain cap 2, the upper end contraction opening surface of the first rain shield 3, the circular diameter of the upper bottom surface of the first rain shield 3 is smaller than the diameter of the conical lower bottom surface of the rain cap 2, and the circular diameter of the upper bottom surface of the first rain shield 3 is larger than the diameter of the smoke exhaust port of the chimney 1. This design is to ensure that when water flows down the inclined surface of the cover body of the rain cap 2, the water flowing onto the first rain shield 3 will not flow into the chimney 1 again from the contraction opening of the first rain shield 3.
[0032] In the above structure, after the smoke exhausted from the chimney 1 hits the top of the rain cap 2, the smoke flow direction changes downward and encounters the first rain shield 3 below the rain cap 2. The conical contraction opening of the first rain shield 3 faces the rain cap 2. This design can produce an airflow guiding effect, and the smoke is guided along the inclined plate of the first rain shield 3 to diffuse into the surrounding environment.
[0033] like Figure 1 and Figure 2 As shown, the second rain shield 4 is annular in structure as a whole, and its cross-section along its axial direction is trapezoidal. It is made of materials with good weather resistance and corrosion resistance, such as stainless steel. The central axis of the second rain shield 4 coincides with the central axis of the rain cap 2, and the annular contraction opening of the second rain shield 4 faces the direction close to the first rain shield 3. The upper bottom surface of the second rain shield 4, that is, close to the first rain shield 3, the contraction opening surface of the second rain shield 4, the conical lower bottom surface of the first rain shield 3, that is, the lower end diffusion opening surface of the first rain shield 3, the circular diameter of the upper bottom surface of the second rain shield 4 is smaller than the diameter of the conical lower bottom surface of the first rain shield 3, and the circular diameter of the upper bottom surface of the second rain shield 4 is larger than the diameter of the smoke exhaust port of the chimney 1. This design is to ensure that when water flows down the inclined surface of the first rain shield 3, the water flowing onto the second rain shield 4 will not flow into the chimney 1 again from the contraction opening of the second rain shield 4.
[0034] In the above structure, after the smoke exhausted from the chimney 1 hits the top of the rain cap 2, the smoke flow direction changes downward, the conical contraction opening of the second rain shield 4 faces the rain cap 2, part of the smoke will reach the second rain shield 4, and the smoke will be guided along the conical slope of the second rain shield 4 to diffuse into the surrounding environment.
[0035] like Figure 1 and Figure 2As shown, a support frame 5 is fixedly installed on the annular inner wall of the second rain shield 4. The support frame 5 is annular and is also made of a material with good weather resistance and corrosion resistance and has sufficient rigidity. The annular support frame 5 is fixedly connected to an annular fixing frame 6 through a second connecting plate 9. In some embodiments, three second connecting plates 9 are evenly fixedly installed on the annular support frame 5. The second connecting plate 9 is fixedly connected to the circular fixing frame 6. The circular fixing frame 6 is fixed at the smoke exhaust port of the chimney 1 to support and fix the entire anti-water accumulation device.
[0036] like Figure 1 and Figure 2 As shown, the arc guide plate 7 is fixedly installed on the fixing frame 6 and is made of a material with good weather resistance and corrosion resistance. The convex side of the arc guide plate 7 is close to the annular contraction opening direction of the second rain shield 4, and the concave side of the arc guide plate 7 is toward the outer wall of the chimney 1, that is, between the second rain shield 4 and the fixing frame 6. The arc guide plate 7 and the support frame 5 form a space that expands and contracts from top to bottom, and a gap is left between the arc guide plate 7 and the support frame 5.
[0037] In the above structure, when rainwater is blown into the anti-water accumulation device by strong wind, the rainwater will flow along the arc guide plate 7 and out from the bottom of the contraction zone formed between the arc guide plate 7 and the support frame 5, so that water will not accumulate inside the device.
[0038] Depend on Figure 1 As shown, the angle between the central axis at the tip of the rain cap 2 and the inclined surface of the cover body is α1, and the angle range of α1 is 70°-75°, that is, the cone angle of the rain cap 2 is 140°-150°. When the angle range of α1 is 70°-75°, the residence time of the smoke discharged from the chimney 1 at the rain cap 2 is shortened, and the efficiency of the smoke diffusion outward is relatively increased.
[0039] Depend on Figure 1 As shown, the inclined plate of the first rain shield 3 is inclined at an angle of α2 relative to its central axis, and the angle range of α2 is 55°-65°. The inclined plate of the second rain shield 4 is inclined at an angle of α3 relative to its central axis, and the angle range of α3 is 40°-50°.
[0040] In the above structure, the angle range of α2 of the first rain shield 3 is smaller than the semi-conical angle α1 of the rain cap 2, that is, the baffle inclination angle of the first rain shield 3 is smaller than the inclination angle of the cover plate of the rain cap 2, and the angle range of α3 of the second rain shield 4 is smaller than the angle range of α2 of the first rain shield 3, that is, the baffle inclination angle of the second rain shield 4 is smaller than the inclination angle of the first rain shield 3. The rain cap 2 is the outermost cover, and its larger cone angle helps to effectively block rain and prevent rainwater from directly entering the chimney 1. The baffle inclination angle of the first rain shield 3 is smaller, which can be to a certain extent. The possibility of rainwater directly entering the chimney 1 is reduced, and it plays an auxiliary rain-shielding role. The third rain shield has a smaller inclination angle, which further reduces the possibility of rainwater intrusion and protects the chimney 1 from rain. In terms of flue gas emissions, by setting multiple layers of conical rain caps 2 and the first rain shield and the second rain shield with different inclination angles, the flue gas can be guided to flow upward step by step, reducing the diffusion and retention of flue gas during the emission process, and the design of gradually decreasing inclination angle helps to make the flue gas emission more stable, avoid the accumulation of smoke around the emission port, and reduce the impact on the surrounding environment.
[0041] like Figure 1 As shown, the shortest distance from the first rain shield 3 to the rain cap 2 is L1, the shortest distance from the contraction opening of the second rain shield 4 to the contraction opening of the first rain shield 3 is L2, and the ratio of L1 to L2 ranges from 1.5:1 to 2:1.
[0042] In the above structure, the open space formed between the rain cap 2 and the first rain shield 3 is larger than the unsealed space formed between the first rain shield 3 and the second rain shield 4. After the smoke is changed in direction by the rain cap 2, the smoke mainly escapes from the open space between the rain cap 2 and the first rain shield 3. Compared with rain shields with uniform distances, the larger open space between the rain cap 2 and the first rain shield 3 is more efficient for smoke escape.
[0043] like Figure 1 and Figure 2 As shown, the rain cap 2, the first rain shield 3 and the second rain shield 4 are fixedly connected by a cylindrical first connecting plate 8. In some embodiments, three cylindrical first connecting plates 8 are respectively fixedly connected to the rain cap 2, the inner wall of the first rain shield and the inner wall of the second rain shield 4, and the first connecting plates 8 are evenly arranged relative to the rain cap 2. The first connecting plates 8 are fixedly connected to the support frame 5 fixed on the second rain shield 4, which plays a role of fixed support for the entire anti-water accumulation device.
[0044] During specific use, the fixing frame 6 is installed at the exhaust port of the chimney 1. When it rains, the rainwater flows through the rain cap 2, the first rain shield 3 and the second rain shield 4 which are arranged step by step. The design of gradually decreasing inclination angle further reduces the possibility of rainwater intrusion, protects the chimney 1 from the influence of rainwater, and helps to make the flue gas emission more stable. If rainwater flows back into the interior of the device, the rainwater will flow along the arc guide plate 7 and out of the chimney 1 from the contraction interval formed between the arc guide plate 7 and the support frame 5.
[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.
Claims
1. A device for preventing water accumulation in a trolley furnace chimney, comprising a rain cap (2), a first rain shield (3) and a second rain shield (4) fixedly installed from top to bottom, characterized in that: The rain cap (2) is in the form of a conical cover structure, and the conical contracted tip of the rain cap (2) faces in a direction away from the first rain shield (3); The first rain shield (3) is truncated cone-shaped as a whole, and its cross section along the axial direction is trapezoidal, the central axis of the first rain shield (3) coincides with the central axis of the rain cap (2), and the annular contraction opening of the first rain shield (3) faces the direction close to the rain cap (2); The second rain shield (4) is truncated cone-shaped as a whole, and its cross section along the axial direction is trapezoidal, the central axis of the second rain shield (4) coincides with the central axis of the rain cap (2), and the annular contraction opening of the second rain shield (4) faces the direction close to the rain cap (2); as well as The arc-shaped guide plate (7) is arranged opposite to the second rain shield (4), and the protruding side of the arc-shaped guide plate (7) is close to the annular contraction opening direction of the second rain shield (4).
2. The device for preventing water accumulation in a trolley furnace chimney according to claim 1, characterized in that: The included angle between the central axis at the tip of the rainproof cap (2) and the inclined surface of the cap body is α1, and the angle range of α1 is 70°-75°.
3. The device for preventing water accumulation in a trolley furnace chimney according to claim 2, characterized in that: The inclined plate of the first rain shield (3) is inclined at an angle of α2 relative to its central axis, and the angle range of α2 is 55°-65°.
4. The device for preventing water accumulation in a trolley furnace chimney according to claim 3, characterized in that: The inclined plate of the second rain shield (4) is inclined at an angle of α3 relative to its central axis, and the angle range of α3 is 40°-50°.
5. The device for preventing water accumulation in the chimney of a trolley furnace according to claim 4, characterized in that: The shortest distance from the first rain shield (3) to the rain cap (2) is L1, the shortest distance from the contraction opening of the second rain shield (4) to the contraction opening of the first rain shield (3) is L2, and the ratio of L1 to L2 ranges from 1.5:1 to 2:
1.
6. The device for preventing water accumulation in the chimney of a trolley furnace according to claim 5, characterized in that: The diameter of the conical lower bottom surface of the rainproof cap (2) is larger than the diameter of the smoke outlet of the chimney (1); the circular diameter of the upper bottom surface of the first rain shield (3) close to the rainproof cap (2) is smaller than the diameter of the conical lower bottom surface of the rainproof cap (2); and the circular diameter of the upper bottom surface of the second rain shield (4) close to the first rain shield (3) is smaller than the circular diameter of the lower bottom surface of the first rain shield (3).
7. The device for preventing water accumulation in the chimney of a trolley furnace according to claim 6, characterized in that: The rainproof cap (2), the first rain shield (3) and the second rain shield (4) are fixedly connected via a first columnar connecting plate (8).
8. The device for preventing water accumulation in the chimney of a trolley furnace according to claim 7, characterized in that: The second rain shield (4) is fixedly connected to a fixing frame (6), the arc-shaped guide plate (7) is fixedly mounted on the fixing frame (6), and the fixing frame (6) is fixedly mounted on the chimney (1).
9. The device for preventing water accumulation in the chimney of a trolley furnace according to claim 8, characterized in that: The concave side of the arc-shaped guide plate (7) faces the outer wall of the chimney (1).