Combined steel chimney
By introducing rotating slot connectors and high-temperature resistant exhaust fans into the modular steel chimney, the problems of inconvenient installation and backflow of flue gas have been solved, achieving flexible installation and smooth discharge.
Patent Information
- Application Number
- CN202520345933.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-03-03
AI Technical Summary
Modular steel chimneys are inconvenient to install and transport, and are prone to backflow of flue gas when the temperature difference between indoors and outdoors is small or in windy weather.
The design incorporates a connector with a rotating groove and a small exhaust fan that is resistant to high temperatures and corrosion. The main body of the chimney adopts a double-layer heat insulation structure and is flexibly installed through threaded connections and positioning rings. The small exhaust fan promotes the smooth discharge of flue gas.
It enables flexible installation in confined spaces, prevents backflow of flue gas, and improves installation efficiency and flue gas emission performance.
Smart Images

Figure CN223753796U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of environmental protection technology, more specifically, it relates to a combined steel chimney. BACKGROUND
[0002] The combined steel chimney is a chimney structure combined by multiple chimneys, mainly covering the internal chimney and the external chimney; wherein, the internal chimney bears the key function of flue gas emission, and the external chimney mainly plays the role of heat preservation and rain prevention; according to the standard of whether the diameters of the internal chimney and the external chimney are consistent, the combined steel chimney can be classified into two different types of same diameter and different diameter; specifically, the diameters of the internal chimney and the external chimney of the same diameter chimney are the same, and the diameters of the internal chimney and the external chimney of the different diameter chimney are different; in terms of application scenarios, the combined steel chimney has relatively wide applicability, such as garbage incineration plant, chemical plant, coal chemical plant, paper mill, urban heating and small power plant, etc.; from its own characteristics, the combined steel chimney has many advantages, such as relatively light weight, relatively simple structure, easy to change appearance and elegant appearance; at the same time, the corrosion-resistant materials and the body materials can be selected, which makes it have excellent corrosion resistance and prolongs the service life; in addition, its construction period is relatively short, the demand for space is relatively limited, the operation is convenient, and it has the function of preserving value.
[0003] However, the combined steel chimney also has certain limitations; some combined steel chimneys have too long chimney body length, which causes many inconveniences in installation and transportation; in addition, some combined steel chimneys lack related structures to promote smoke exhaust, and when the indoor and outdoor temperature difference is small or in windy weather, flue gas backflow phenomenon is easy to occur. UTILITY MODEL CONTENTS
[0004] In order to solve the above technical problems, the utility model provides a combined steel chimney to solve the problems that the existing equipment is inconvenient to install and transport, the indoor and outdoor temperature difference is small or in windy weather, and the flue gas is easy to backflow.
[0005] The utility model relates to a combined steel chimney, which is achieved by the following specific technical means:
[0006] The utility model provides a combined steel chimney, including: chimney body, two sections the chimney body realizes the connection through the connecting piece, is equipped with the fixed ring in the middle position of connecting piece, is equipped with four groups of fixed rod on the periphery of fixed ring, is equipped with the upper connecting ring above fixed ring, and the periphery of upper connecting ring is equipped with upper connecting handle, is equipped with the lower connecting ring below fixed ring, the periphery of lower connecting ring is also equipped with lower connecting handle, the inner side of fixed ring is connected with two groups of positioning ring, the inner side of two groups of positioning ring connection position is connected with mounting plate, the upper side of the chimney body in the last section is connected with chimney top cover, the uppermost structure of chimney top cover is top cover plate, is connected with four groups of support plate below top cover plate, and the clearance formed between support plate is the smoke outlet, is connected with the fixed ring below support plate, the periphery of fixed ring is equipped with fixed rod, is equipped with the lower connecting ring below fixed ring, the periphery of lower connecting ring is equipped with lower connecting handle, and the inner side of this fixed ring is connected with a group of positioning ring.
[0007] Further, the upper and lower ends of the chimney body are provided with threaded outer walls, and the inner sides of the upper connecting ring and the lower connecting ring are provided with threaded inner walls.
[0008] Further, the outer sides of the positioning rings are provided with rotating grooves, and the upper connecting ring and the lower connecting ring can rotate in the corresponding rotating grooves.
[0009] Further, six small exhaust fans are arranged on the mounting plate, and the periphery of the upper connecting handle is provided with a ring-shaped solar panel.
[0010] Further, the small exhaust fans are made of high-temperature-resistant and corrosion-resistant materials.
[0011] Further, the chimney body, the upper connecting ring of the connecting piece, the lower connecting ring of the connecting piece, and the top cover plate all have double-layer structures with heat-insulating cavities.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1. The utility model discloses a rotating groove is set up, in the installation process of combined steel chimney, can select proper installation mode according to the actual situation of construction site, when the construction site is narrow and cannot be connected in advance, install the first chimney main body to the specified position directly, after its installation is stable and the position is accurate, move the connecting piece to the corresponding position, make it with the upper end of the next chimney main body accurate alignment, hold the fixed rod, through the mode of rotating lower connecting handle, make the connecting piece and the next chimney main body realize the close connection and fix, lift the last chimney main body again, carefully align the lower end with the connecting piece that has been connected, hold the fixed rod similarly, then rotate upper connecting handle, make the connecting piece and the last chimney main body also can be firmly connected and fixed together, so circulate operation, complete the connection installation work between chimney main body and connecting piece section by section, this installation method exhibits good flexibility and convenience under the condition that the space of site is limited, helps the efficient and smooth completion of the installation task of combined steel chimney.
[0014] 2. The utility model discloses a small exhaust fan is set up, helps chimney realizes the smooth outward discharge of flue gas, effectively avoids the occurrence of flue gas backflow under the condition that indoor and outdoor temperature difference is not big and encounters gale weather.
[0015] 3. The utility model discloses a heat insulation cavity is set up, is favorable to the heat insulation of chimney. ACCURACY
[0016] Figure 1 It is the overall structure schematic diagram of the utility model.
[0017] Figure 2 It is the connecting piece exploded view structure schematic diagram of the utility model.
[0018] Figure 3 It is the connecting piece exploded view structure schematic diagram of the utility model.
[0019] Figure 4 It is the connecting piece section structure schematic diagram of the utility model.
[0020] Figure 5 It is the chimney top cover section structure schematic diagram of the utility model.
[0021] Figure 6 It is the section structure schematic diagram of the utility model
[0022] In the drawing, the corresponding relation of component name and drawing number is:
[0023] 1, chimney main body;
[0024] 2, fixed ring;201, fixed rod;
[0025] 3, upper connecting ring;301, upper connecting handle;
[0026] 4, lower connecting ring; 401, lower connecting handle;
[0027] 5, annular solar panel;
[0028] 6, support plate;
[0029] 7, smoke outlet;
[0030] 8, top cover plate;
[0031] 9, mounting plate;
[0032] 10, small exhaust fan;
[0033] 11, positioning ring; 1101, rotating groove;
[0034] 12, threaded inner wall. DETAILED DESCRIPTION
[0035] The embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.
[0036] Example: as shown in the accompanying drawings Figure 1 to the accompanying drawings Figure 6 :
[0037] The present application provides a combined steel chimney, comprising: chimney body 1; two chimney body 1 is connected by connecting piece, the middle position of connecting piece is provided with fixed ring 2, four groups of fixed rods 201 are equipped on the periphery of fixed ring 2, the upper of fixed ring 2 is provided with upper connecting ring 3, and the periphery of upper connecting ring 3 is provided with upper connecting handle 301, the lower of fixed ring 2 is provided with lower connecting ring 4, the periphery of lower connecting ring 4 is provided with lower connecting handle 401, the inner side of fixed ring 2 is connected with two groups of positioning rings 11, the inner side of connecting position of two groups of positioning rings 11 is connected with mounting plate 9, the upper of chimney body 1 in the uppermost section is connected with chimney top cover, the uppermost structure of chimney top cover is top cover plate 8, four groups of support plates 6 are connected below top cover plate 8, the gap formed between support plates 6 is smoke outlet 7, fixed ring 2 is connected below support plate 6, fixed rod 201 is provided on the periphery of fixed ring 2, lower connecting ring 4 is provided below fixed ring 2, lower connecting handle 401 is also provided on the periphery of lower connecting ring 4, and the inner side of this fixed ring 2 is connected with a group of positioning rings 11.
[0038] Among them, as shown in the accompanying drawings Figure 2 , Figure 3 and Figure 4As shown, the upper and lower ends of the chimney body 1 are provided with threaded outer walls, the inner sides of the upper connecting ring 3 and the lower connecting ring 4 are equipped with threaded inner walls 12, and the outer sides of each positioning ring 11 are provided with rotating grooves 1101. The upper connecting ring 3 and the lower connecting ring 4 can rotate in the corresponding rotating grooves 1101. The appropriate connecting mode can be selected according to the construction site. If the construction site is small, the chimney can be directly installed. After the next section of chimney body 1 is installed, the connecting piece is aligned with the upper end of the chimney body 1, the lower connecting handle 401 is rotated while pressing the fixing rod 201, the chimney body 1 and the connecting piece are connected and fixed, the previous section of chimney body 1 is aligned with the connecting piece, the upper connecting handle 301 is rotated while pressing the fixing rod 201, and the connecting piece and the chimney body 1 are connected and fixed. The installation is flexible and convenient.
[0039] As shown in Figure 2 , Figure 3 and Figure 4 , six groups of small exhaust fans 10 are arranged on the mounting plate 9, and the outer periphery of the upper connecting handle 301 is equipped with a ring-shaped solar panel 5. The materials of the small exhaust fans 10 are high-temperature-resistant and corrosion-resistant materials, which promote the chimney to discharge flue gas outward and prevent the phenomenon of flue gas backflow when the indoor and outdoor temperature difference is small or when strong winds occur.
[0040] As shown in Figure 6 , the chimney body 1, the upper connecting ring 3 of the connecting piece, the lower connecting ring 4 of the connecting piece, and the top cover plate 8 are all double-layer structures with heat-insulating cavities, which are beneficial to the heat insulation and rain prevention of the chimney.
[0041] The specific use mode and effect of the embodiment are as follows:
[0042] In the utility model, after the required components are transported to the construction site, if the construction site allows, the components can be assembled on the construction site. The first section of chimney body 1 is supported by the supporting equipment, the lower connecting ring 4 of the connecting piece is aligned with the upper end of the first section of chimney body 1, the lower connecting handle 401 is twisted to connect and fix the threaded outer wall at the upper end of the first section of chimney body 1 into the threaded inner wall 12 inside the lower connecting ring 4, the second section of chimney body 1 is supported by the supporting equipment, the lower end of the second section of chimney body 2 is aligned with the upper connecting ring 3 of the connecting piece, the upper connecting handle 301 is twisted to connect and fix the threaded outer wall at the lower end of the second section of chimney body 1 into the threaded inner wall 12 inside the upper connecting ring 3, and the operation is repeated. After the connection of the chimney body 1 is completed, the upper end of the uppermost section of chimney body 1 is aligned with the lower connecting ring 4 below the chimney top cover, the lower connecting handle 401 is rotated to connect and fix it, and after the complete installation, the lifting equipment is used to lift and install it to the designated position.
[0043] When the construction site is narrow and cannot be connected in advance, the first chimney body 1 is directly installed to the specified position, and after the installation is stable and the position is accurate, the connecting piece is moved to the upper end of the next chimney body 1, the fixed rod 201 is pressed, the connecting piece and the next chimney body 1 are tightly connected and fixed by rotating the lower connecting handle 401, the last chimney body 1 is lifted, the lower end is carefully aligned with the connected connecting piece, the fixed rod 201 is pressed, and the connecting piece and the last chimney body 1 are tightly connected and fixed by rotating the upper connecting handle 301; the operation is repeated, and the connection and installation work are completed section by section.
[0044] The parts not described in the utility model are known to those skilled in the art.
Claims
1. A modular steel chimney comprising: Chimney body (1); characterized in that: two said chimney body (1) is connected by connecting piece, the middle position of connecting piece is provided with fixed ring (2), four groups of fixed rod (201) are equipped on the periphery of fixed ring (2), the upper of fixed ring (2) is equipped with upper connecting ring (3), and the periphery of upper connecting ring (3) is provided with upper connecting handle (301), the lower of fixed ring (2) is equipped with lower connecting ring (4), the periphery of lower connecting ring (4) is provided with lower connecting handle (401), the inner side of fixed ring (2) is connected with two groups of positioning ring (11), the inner side of connecting position of two groups of positioning ring (11) is connected with mounting plate (9), the upper of chimney body (1) of the uppermost section is connected with chimney top cover, the uppermost structure of chimney top cover is top cover plate (8), four groups of support plates (6) are connected below top cover plate (8), the gap formed between support plate (6) is chimney outlet (7), the lower of support plate (6) is connected with fixed ring (2), the periphery of fixed ring (2) is provided with fixed rod (201), the lower of fixed ring (2) is equipped with lower connecting ring (4), the periphery of lower connecting ring (4) is also provided with lower connecting handle (401), and the inner side of this fixed ring (2) is connected with a group of positioning ring (11).
2. A sectional steel chimney as claimed in claim 1, characterized in that: The upper and lower ends of the chimney body (1) are provided with threaded outer walls, and the inner sides of the upper connecting ring (3) and the lower connecting ring (4) are provided with threaded inner walls (12).
3. A sectional steel chimney according to claim 1, characterized in that: The outer sides of the positioning rings (11) are provided with rotating grooves (1101), and the upper connecting ring (3) and the lower connecting ring (4) can rotate in the corresponding rotating grooves (1101).
4. A sectional steel chimney according to claim 1, characterized in that: Six small exhaust fans (10) are arranged on the mounting plate (9), and a ring-shaped solar panel (5) is arranged on the periphery of the upper connecting handle (301).
5. A sectional steel chimney according to claim 4, characterized in that: The small exhaust fans (10) are made of high-temperature-resistant and corrosion-resistant materials.
6. A sectional steel chimney according to claim 1, characterized in that: The chimney body (1), the upper connecting ring (3) of the connecting piece, the lower connecting ring (4) of the connecting piece, and the top cover plate (8) are all double-layer structures with heat-insulating cavities.