Flue gas mixer capable of preventing air leakage

Abstract

The utility model belongs to the technical field of flue gas mixers, and particularly relates to an air leakage prevention flue gas mixer. The device comprises a mixing cylinder, the mixing cylinder comprises a shell used for mixing gas and a bottom plate mounted at the bottom of the shell, an embedded steel plate is attached to the bottom of the bottom plate, a mounting groove I used for placing the bottom plate is formed in the embedded steel plate, a frosted surface I is arranged at the bottom of the mounting groove I, and a frosted surface II in sealing fit with the frosted surface I is arranged at the bottom of the bottom plate; a connecting plate is fixed to the outer side of the shell, connecting holes with the center lines on the same straight line are formed in the embedded steel plates on the outer side of the connecting plate and the outer side of the bottom plate, and embedded foundation bolts are installed in the connecting holes in a penetrating mode. According to the utility model, the problem of air leakage of the existing flue gas mixer is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of smoke mixers, in particular to a smoke mixer that prevents air leakage. Background Art

[0002] The sintering flue gas recycling process refers to a process in which a portion of the hot flue gas generated during the sintering process is not discharged into the atmosphere, but is returned to the sintering material surface for reuse after simple treatment, thereby reducing the sintering solid fuel consumption and waste gas emissions. Usually, in order to ensure the sintering effect, the flue gas needs to be mixed by a flue gas mixer (also called a flue gas homogenizer) before returning to the sintering material surface, so that the flue gas temperature and composition are evenly mixed before returning to the sintering material surface.

[0003] The existing smoke mixer structure can be found in Figure 4 and Figure 5 The structure mainly includes: mixing cylinder, reflector, guide cylinder, air inlet pipe I, air inlet pipe II, air outlet pipe, embedded steel plate and embedded anchor bolts. Figure 5 The large sample at "A" shows that the mixing cylinder structure includes a shell and a bottom plate; the bottom plate of the mixing cylinder is placed on the embedded steel plate and fixed with bolts after passing through the embedded anchor bolts. The guide cylinder is located in the center of the inner cavity of the mixing cylinder, the air inlet pipe I and the air inlet pipe II are respectively arranged on both sides below the mixing cylinder, and the air outlet pipe is arranged on one side above the mixing cylinder.

[0004] There is a typical problem when using the above-mentioned flue gas mixer. Since the diameter of the mixing tube is very large, basically 3 meters to 4 meters, the bottom plate is usually not a whole plate, but can only be processed into a ring-shaped bottom plate by cutting and splicing. Sometimes a plate is used and then made into a ring structure. The same is true for embedded steel plates. This method has low processing accuracy (the width of the ring is usually around 50cm) and it is easy for the bottom of the mixing tube to be loosely sealed during use, which is prone to air leakage. See details. Figure 5 The base plate and the embedded steel plate are in contact with each other. If the surface of the embedded steel plate is uneven, there will easily be gaps for air leakage. In addition, the anchor bolts pass through the base plate and the embedded steel plate, and there are corresponding through holes on the base plate and the embedded steel plate, which are also prone to air leakage. Utility Model Content

[0005] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a smoke mixer that is anti-leakage, which effectively solves the problem of air leakage in the existing smoke mixer.

[0006] The air leakage-proof smoke mixer comprises a mixing cylinder, which comprises a shell for mixing gas and a bottom plate installed at the bottom of the shell, an embedded steel plate is attached to the bottom of the bottom plate, an installation groove I for the bottom plate to be placed is provided on the embedded steel plate, a frosted surface I is provided at the bottom of the installation groove I, and a frosted surface II is provided at the bottom of the bottom plate to seal with the frosted surface I;

[0007] A connecting plate is fixed on the outer side of the shell, and connecting holes whose center lines are in the same straight line are opened in the embedded steel plate on the outer side of the connecting plate and the bottom plate, and embedded anchor bolts are installed in the connecting holes.

[0008] Furthermore, a baffle is provided on the outside of the connecting plate to seal it, the top of the baffle is sealed with the connecting plate, and the bottom is an insertion end for inserting into the secondary filling layer; the baffle, the connecting plate and the shell below the connecting plate form a sealed cavity as a whole.

[0009] Furthermore, a sealing cover is installed on the connecting plate to seal the embedded anchor bolt part above the connecting plate.

[0010] Furthermore, the cover opening of the sealing cover is a circular ring structure, and a mounting groove II for seamlessly clamping the circular ring structure is provided on the connecting plate.

[0011] Furthermore, an asbestos sealing pad layer for sealing is provided between the groove wall of the installation groove I and the bottom plate.

[0012] Furthermore, reinforcing ribs I are provided between the inner wall of the shell and the embedded steel plate and the bottom plate.

[0013] Furthermore, reinforcing ribs II are provided between the outer wall of the shell below the connecting plate and the connecting plate and the bottom plate.

[0014] Furthermore, a reflector is provided on the top of the mixing cylinder, a guide cylinder is provided at the center of the inner cavity of the mixing cylinder, air inlet pipes I and II are provided on both sides below the mixing cylinder, and an air outlet pipe is provided on one side above the mixing cylinder.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model improves the sealing performance of the bottom plate installation through multiple structural designs, which can effectively solve the problem of air leakage at the bottom installation of the mixing cylinder. Specifically, it can be seen that compared with the prior art, the embedded anchor bolts of the utility model are fixed after passing through the embedded steel plate and the connecting plate, and no longer need to pass through the bottom plate. There are no openings at the contact between the bottom plate and the embedded steel plate. This ingenious design avoids the problem of air leakage at the opening. In addition, under the coordinated design of the connecting plate and the enclosure, the lower end of the enclosure is inserted into the secondary filling layer, and the design of the enclosure can further prevent smoke leakage.

[0017] 2. The utility model has a stable structure. Reinforcement ribs I are provided between the inner wall of the shell and the embedded steel plate and the bottom plate, and reinforcement ribs II are provided between the outer wall of the shell and the bottom plate and the connecting plate. The reinforcement ribs can further improve the structural strength of the bottom plate installation to avoid looseness and air leakage caused by gaps. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 for Figure 1 The enlarged structural diagram at B in the middle;

[0021] Figure 3 This is a schematic diagram of the bottom plate and steel plate structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of a smoke mixer in the prior art;

[0023] Figure 5 for Figure 4 The enlarged structural diagram at A in the middle;

[0024] Figure numerals: 1. Mixing cylinder; 101. Shell; 102. Bottom plate; 1021. Frosted surface II; 103. Connecting plate; 1031. Mounting groove II; 104. Reinforcing rib II; 105. Reinforcing rib I; 2. Reflecting plate; 3. Guide cylinder; 4. Air inlet duct I; 5. Air inlet duct II; 6. Air outlet duct; 7. Embedded steel plate; 71. Mounting groove I; 72. Asbestos sealing pad layer; 73. Frosted surface I; 8. Embedded anchor bolts; 9. Sealing cover; 10. Enclosure. DETAILED DESCRIPTION

[0025] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Example

[0028] The present embodiment describes a smoke mixer that prevents air leakage, such as Figure 1 As shown, it includes a mixing cylinder 1, which includes a shell 101 for mixing gas and a bottom plate 102 installed at the bottom of the shell 101, and a pre-buried steel plate 7 is attached to the bottom of the bottom plate 102. A reflector 2 is arranged on the top of the mixing cylinder 1, and a guide cylinder 3 is arranged at the center of the inner cavity of the mixing cylinder 1. Inlet pipes I4 and II5 are arranged on both sides below the mixing cylinder 1, and an outlet pipe 6 is arranged on one side above the mixing cylinder 1;

[0029] like Figure 3 As shown, the embedded steel plate 7 is provided with an installation groove Ⅰ71 for placing the bottom plate 102, the bottom of the installation groove Ⅰ71 is provided with a frosted surface Ⅰ73, and the bottom of the bottom plate 102 is provided with a frosted surface Ⅱ1021 for sealing with the frosted surface Ⅰ73;

[0030] like Figure 2 As shown, a connecting plate 103 is fixed to the outside of the shell 101, and connecting holes with their center lines in the same straight line are opened in the embedded steel plate 7 outside the connecting plate 103 and the bottom plate 102, and embedded anchor bolts 8 are installed in the connecting holes.

[0031] In order to further prevent smoke from leaking between the embedded anchor bolts 8 and the connection holes, a sealing cover 9 is installed on the connection plate 103 to seal the embedded anchor bolts 8 above the connection plate 103 .

[0032] For the convenience of processing, the sealing cover 9 has a circular ring structure, and a mounting groove II 1031 for seamlessly connecting the circular ring structure is provided on the connecting plate 103. In practical application, the sealing cover 9 can also be a square frame or other structure, and the mounting groove II 1031 can correspond to its structural shape.

[0033] In order to further prevent air leakage caused by incomplete sealing between frosted surface I73 and frosted surface II1021, an enclosure 10 is provided on the outside of the connecting plate 103 to seal it. The top of the enclosure 10 is sealed with the connecting plate 103, and the bottom is an insertion end for inserting into the secondary filling layer; the enclosure 10, the connecting plate 103 and the shell 101 below the connecting plate 103 form a sealed cavity as a whole.

[0034] In order to further improve the sealing effect, an asbestos sealing pad layer 72 for sealing is arranged between the groove wall of the installation groove I 71 and the bottom plate 102 .

[0035] In order to enhance the structural strength between the bottom plate 102 and the shell 101 and avoid looseness and air leakage from gaps, this embodiment further describes the technology, and a reinforcing rib I 105 is provided between the inner wall of the shell 101 and the embedded steel plate 7 and the bottom plate 102. Similarly, a reinforcing rib II 104 is provided between the outer wall of the shell 101 below the connecting plate 103 and the connecting plate 103 and the bottom plate 102.

[0036] This embodiment does not limit the specific structural shapes of the bottom plate 102, the embedded steel plate 7, the connecting plate 103 and the enclosure 10, because the bottom plate 102 and the embedded steel plate 7 are usually annular structures, but other structures such as rectangles are also applicable. In general, their shapes need to be determined according to the shape of the shell 101. In order to facilitate production and reasonably control costs, it is preferred that the shell 101 is a cylindrical structure without a bottom, the bottom plate 102, the embedded steel plate 7 and the connecting plate 103 are circular ring structures, and the enclosure 10 is a cylindrical structure without a bottom. During installation, the embedded steel plate 7, the embedded anchor bolts 8 and the lower end of the enclosure 10 are embedded. In this embodiment, when air leakage occurs between the bottom plate 102 and the embedded steel plate 7, secondary sealing is performed under the cooperation of the enclosure 10, the connecting plate 103 and the shell 101. When air leakage occurs between the embedded anchor bolts 8 and the connecting hole, tertiary sealing is performed under the cooperation of the sealing cover 9.

[0037] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A smoke mixer for preventing air leakage, comprising a mixing cylinder (1), the mixing cylinder (1) comprising a housing (101) for mixing gas and a bottom plate (102) mounted at the bottom of the housing (101), the bottom of the bottom plate (102) being affixed with an embedded steel plate (7), characterized in that: The embedded steel plate (7) is provided with an installation groove I (71) for receiving the bottom plate (102); the bottom of the installation groove I (71) is provided with a frosted surface I (73); and the bottom of the bottom plate (102) is provided with a frosted surface II (1021) for sealing with the frosted surface I (73); A connecting plate (103) is fixed to the outside of the shell (101), and connecting holes whose center lines are in a straight line are opened in the embedded steel plate (7) outside the connecting plate (103) and the bottom plate (102), and embedded anchor bolts (8) are installed in the connecting holes.

2. The air leakage-proof smoke mixer according to claim 1, characterized in that: An enclosure (10) is provided on the outside of the connecting plate (103) to seal the connecting plate; the top end of the enclosure (10) is sealedly connected to the connecting plate (103), and the bottom end is an insertion end for inserting into the secondary filling layer; the enclosure (10), the connecting plate (103) and the shell (101) below the connecting plate (103) form a sealed cavity as a whole.

3. The air leakage-proof smoke mixer according to claim 2, characterized in that: The connection plate (103) is provided with a sealing cover (9) which seals and covers a portion of the pre-buried anchor bolts (8) above the connection plate (103).

4. The air leakage-proof smoke mixer according to claim 3, characterized in that: The sealing cover (9) has a cover opening of a circular ring structure, and a mounting groove II (1031) for seamlessly clamping the circular ring structure is provided on the connecting plate (103).

5. The air leakage-proof flue gas mixer according to any one of claims 1 to 4, characterized in that: An asbestos sealing pad layer (72) for sealing is arranged between the groove wall of the installation groove I (71) and the bottom plate (102).

6. The air leakage-proof smoke mixer according to claim 5, characterized in that: Reinforcing ribs I (105) are provided between the inner wall of the shell (101), the embedded steel plate (7) and the bottom plate (102).

7. The air leakage-proof smoke mixer according to claim 5, characterized in that: A reinforcing rib II (104) is provided between the outer wall of the shell (101) below the connecting plate (103), the connecting plate (103) and the bottom plate (102).

8. The air leakage-proof flue gas mixer according to claim 1, characterized in that: A reflection plate (2) is arranged on the top of the mixing cylinder (1), a flow guide cylinder (3) is arranged at the center of the inner cavity of the mixing cylinder (1), an air inlet pipe I (4) and an air inlet pipe II (5) are arranged on both sides below the mixing cylinder (1), and an air outlet pipe (6) is arranged on one side above the mixing cylinder (1).

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