Smoke inlet and outlet box of multi-layer plate structure

Abstract

The utility model relates to the technical field of smoke inlet and outlet boxes, and provides a smoke inlet and outlet box of a multi-layer plate structure. An inner box body is divided into an upper space, a middle space and a lower space through a smoke inlet partition plate and a smoke outlet partition plate; when high-temperature flue gas enters the lower space from the flue gas inlet, the high-temperature flue gas can be directly lifted to the middle space through the lifting device and then is discharged from the flue gas outlet without passing through an external dust remover, direct contact between the high-temperature flue gas and the external dust remover is avoided, the external dust remover is prevented from being damaged, and the service life of the external dust remover and the service life of the flue gas inlet and outlet box are prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of cigarette inlet and outlet boxes, and in particular to a cigarette inlet and outlet box with a multi-layer board structure. Background Art

[0002] Existing small-scale domestic waste incineration facilities, such as the smoke box, are generally single-layer structures with a dust collector installed inside. Flue gas enters from the smoke inlet and is discharged from the smoke outlet after passing through the dust collector. When the flue gas temperature is too high, the high-temperature flue gas directly contacts the dust collector, which may damage the dust collector, resulting in poor dust removal effect and failure to meet emission standards. If a dust collector cooling device is installed in the smoke box, the structure of the smoke box will be complicated, affecting the circulation of flue gas, easily accumulating dust, and affecting the dust removal effect.

[0003] Therefore, the existing dust removal effect of the smoke box is poor, and it is difficult to avoid the problem of high-temperature flue gas directly contacting the dust collector. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of this application is to provide a smoke inlet and outlet box with a multi-layer plate structure, aiming to solve the problem that the dust removal effect of the smoke inlet and outlet box in the prior art is poor and it is difficult to avoid direct contact between high-temperature flue gas and the dust collector.

[0005] The technical solution adopted by the present application to solve the technical problem is as follows: providing a smoke inlet and outlet box with a multi-layer plate structure, comprising an inner box body and a double-layer lifting device;

[0006] The smoke exhaust fan is connected with the smoke exhaust fan by the bottom end face of the smoke exhaust fan, and the smoke exhaust fan is connected with the smoke exhaust fan by the bottom end face of the smoke exhaust fan.

[0007] The double-layer lifting device is arranged on the box top plate, the smoke inlet partition and the smoke outlet partition. The double-layer lifting device is used to connect the lower space and the middle space when high-temperature smoke enters the smoke inlet.

[0008] Optionally, the double-layer lifting device includes a cylinder, a floating joint, a lifting shaft and a valve cover; one end of the lifting shaft is connected to the cylinder through the floating joint, and the other end is connected to the valve cover; a hole corresponding to the valve cover is provided on the smoke inlet partition.

[0009] Optionally, the double-layer lifting device further comprises a flange cover and a partition assembly; the double-layer lifting device is connected to the box top plate via the flange cover, and is connected to the smoke outlet partition via the partition assembly;

[0010] The cylinder is arranged above the flange cover, and the valve cover is located below the flange cover; the partition assembly is located between the flange cover and the valve cover;

[0011] The lifting shaft passes through the center of the flange cover and the center of the partition assembly to connect the cylinder and the valve cover.

[0012] Optionally, a first guide sealing assembly is provided at the center of the flange cover, which is tightly fitted with the lifting shaft through the first guide sealing assembly; a second guide sealing assembly is provided at the center of the partition assembly, which is tightly fitted with the lifting shaft through the second guide sealing assembly.

[0013] Optionally, a single-layer lifting device is further included; the single-layer lifting device is arranged on the top plate of the box body and the smoke outlet partition, and is used to connect the upper space and the middle space.

[0014] Optionally, the single-layer lifting device includes a cylinder, a floating joint, a lifting shaft and a valve cover; one end of the lifting shaft is connected to the cylinder through the floating joint, and the other end is connected to the valve cover; a hole corresponding to the valve cover is provided on the smoke outlet baffle.

[0015] Optionally, the single-layer lifting device further includes a flange cover; the single-layer lifting device is connected to the top plate of the box body through the flange cover;

[0016] The cylinder is arranged above the flange cover, and the valve cover is located below the flange cover; the lifting shaft passes through the center position of the flange cover to connect the cylinder and the valve cover.

[0017] Optionally, a first guide sealing assembly is provided at the center of the flange cover, and the flange cover is tightly fitted with the lifting shaft through the first guide sealing assembly.

[0018] Optionally, the front plate of the box body is provided with an inspection port connected to the middle space.

[0019] Optionally, the left side plate of the box body is provided with a manhole connected to the lower space.

[0020] Compared with the prior art, the present application provides a smoke inlet and outlet box with a multi-layer plate structure, in which the inner box body is divided into an upper space, a middle space and a lower space by smoke inlet partitions and smoke outlet partitions; when high-temperature flue gas enters the lower space from the smoke inlet, the high-temperature flue gas can be directly lifted to the middle space by a lifting device and then discharged from the smoke outlet, and then does not pass through an external dust collector, thereby avoiding direct contact between the high-temperature flue gas and the external dust collector, preventing damage to the external dust collector, and extending the service life of the external dust collector and the smoke inlet and outlet box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the multi-layer board structure of the smoke inlet and outlet box provided in this application;

[0022] Figure 2 This is a schematic diagram of the main cross-sectional structure of the inlet and outlet smoke box of the multi-layer board structure provided in this application;

[0023] Figure 3 1 is a schematic side cross-sectional structural diagram of a multi-layer board structure of a smoke inlet and outlet box provided in this application;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the double-layer lifting device in this application;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the single-layer lifting device in this application;

[0026] Figure 6 is a cross-sectional view of the first guide seal assembly in the present application;

[0027] Figure 7 is a cross-sectional view of the partition assembly in this application;

[0028] Figure 8 It is a cross-sectional view of the valve seat assembly in this application.

[0029] Description of reference numerals:

[0030] 001, lower space; 002, middle space; 003, upper space; 1, box; 2, double-layer lifting device; 3, single-layer lifting device; 4, cylinder; 5, floating joint; 6, lifting shaft; 7, first guide seal assembly; 8, partition assembly; 9, valve seat assembly; 10, cylinder bracket; 11, flange cover; 12, valve cover; 13, single-layer connecting rod; 14, double-layer connecting rod; 101, smoke inlet; 102, smoke outlet; 103, inspection port; 104, manhole; 105, connecting port; 106. Connecting port; 107. Outer sealing plate; 108. Inner box; 109. Insulation layer; 110. Smoke outlet partition; 111. Smoke inlet partition; 701. Guide sealing seat; 702. Pressure cover; 703. Sealing ring; 704. Linear bearing; 81. Second guide sealing assembly; 801. Middle partition; 802. Middle fixing plate; 803. Connecting plate; 804. Connecting sealing gasket; 901. Valve seat; 902. Valve seat fixing plate; 903. Valve seat seal; 904. Valve cover seal. DETAILED DESCRIPTION

[0031] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "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 application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot 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 one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] Combined with reference Figure 1 、 Figure 2 and Figure 3 In the first embodiment of the present application, a smoke inlet and outlet box with a multi-layer plate structure is provided, including an inner box body 108 and a double-layer lifting device 2.

[0035] The inner box body 108 is provided with a left side panel of the box body, a right side panel of the box body, a front panel of the box body, a rear panel of the box body, a bottom panel of the box body, a top panel of the box body, a smoke inlet partition 111 and a smoke outlet partition 110; wherein, the left side panel of the box body, the right side panel of the box body, the front panel of the box body, the rear panel of the box body, the bottom panel of the box body and the top panel of the box body together constitute the outer wall of the inner box body 108; the smoke inlet partition 111 and the smoke outlet partition 110 divide the inner cavity of the inner box body 108 into an upper space 003, a middle space 002 and a lower space 001 arranged in sequence from top to bottom.

[0036] A smoke inlet 101 communicating with the lower space 001 is provided on the left side panel of the box, a smoke outlet 102 communicating with the middle space 002 is provided on the right side panel of the box, a connecting port 106 communicating with the upper space 003 is provided on the rear panel of the box, and a connecting port 105 communicating with the lower space 001 is provided on the bottom plate of the box; the connecting port 105 is connected to the connecting port 106, and an external dust collector is provided between the connecting port 105 and the connecting port 106.

[0037] The double-layer lifting device 2 is arranged on the top plate of the box body, the smoke inlet partition 111 and the smoke outlet partition 110. The double-layer lifting device 2 is used to connect the lower space 001 and the middle space 002 when high-temperature smoke enters the smoke inlet 101.

[0038] The smoke inlet and outlet box of the present embodiment has a multi-layer plate structure, and the inner box body 108 is divided into an upper space 003, a middle space 002 and a lower space 001 by the smoke inlet partition 111 and the smoke outlet partition 110. When the high-temperature flue gas enters the lower space 001 from the smoke inlet 101, the high-temperature flue gas can be lifted to the middle space 002 by the double-layer lifting device 2 and then discharged from the smoke outlet 102, avoiding direct contact between the high-temperature flue gas and the external dust collector, preventing damage to the external dust collector, and extending the service life of the smoke inlet and outlet box.

[0039] Among them, high-temperature flue gas refers to the flue gas temperature exceeding 250°C instantaneously, or the flue gas temperature exceeding 230°C and the cumulative time exceeds 60 minutes; and the flue gas temperature below 230°C is normal flue gas.

[0040] In some embodiments, a multi-layer board structure of a smoke inlet and outlet box body 1 includes an inner box body 108 and an outer sealing plate 107 , and the outer sealing plate 107 is sleeved on the outside of the inner box body 108 ; an insulation layer 109 may be provided between the inner box body 108 and the outer sealing plate 107 .

[0041] In some embodiments, in conjunction with reference Figure 1 、 Figure 2 as well as Figure 4 The double-layer lifting device 2 includes a cylinder 4, a floating joint 5, a lifting shaft 6, and a valve cover 12. One end of the lifting shaft 6 is connected to the cylinder 4 via the floating joint 5, and the other end is connected to the valve cover 12. The double-layer lifting device 2 can be located on the top plate of the box body near the smoke outlet 102, extending through the flange opening of the box body top plate to the inner box body 108. The smoke inlet baffle 111 is provided with a hole corresponding to the valve cover 12. Specifically, the connection between the double-layer lifting device 2 and the smoke inlet baffle 111 is provided with a hole corresponding to the valve cover 12. By stretching the valve cover 12, the hole in the smoke inlet baffle 111 corresponding to the valve cover 12 is opened and closed, thereby connecting the middle space 002 and the lower space 001.

[0042] In some embodiments, the double-layer lifting device 2 further includes a flange cover 11 and a diaphragm assembly 8. The cylinder 4 is mounted on the flange cover 11, and the valve cover 12 is located below the flange cover 11. The diaphragm assembly 8 is located between the flange cover 11 and the valve cover 12. The lifting shaft 6 passes through the center of the flange cover 11 and the center of the diaphragm assembly 8, connecting the cylinder 4 to the valve cover 12. The addition of the diaphragm assembly 8 gives the double-layer lifting device 2 a double-layer structure, which increases the lifting distance.

[0043] In some embodiments, the double-layer lifting device 2 further includes a valve seat assembly 9, a cylinder bracket 10, a single-layer connecting rod 13, and a double-layer connecting rod 14. The single-layer connecting rod 13 is fixed below the partition assembly 8, the valve seat assembly 9 is fixedly connected to the single-layer connecting rod 13, the cylinder bracket 10 is fixed above the flange cover 11, and the cylinder 4 is fixedly connected to the cylinder bracket 10. The valve seat assembly 9 is used to place the valve cover 12, the single-layer connecting rod 13 is used to connect the valve seat assembly 9 to the partition assembly 8, and the cylinder bracket 10 is used to fix and support the cylinder 4. The double-layer connecting rod 14 is used to connect the partition assembly 8 and the flange cover 11, and is located between the partition assembly 8 and the flange cover 11. Specifically, the double-layer lifting device 2 is fixedly connected to the top plate of the box body through the flange cover 11, fixedly connected to the smoke outlet partition 110 through the partition assembly 8, and fixedly connected to the smoke inlet partition 111 through the valve seat assembly 9.

[0044] When high-temperature flue gas enters the smoke inlet 101 of the smoke inlet and outlet box with a multi-layer board structure, it is an abnormal state and the double-layer lifting device 2 is opened; the high-temperature flue gas enters the lower space 001 from the smoke inlet 101, is lifted to the middle space 002 by the double-layer lifting device 2, and then passes out from the smoke outlet 102, avoiding direct contact between the high-temperature flue gas and the external dust collector, preventing damage to the external dust collector, and extending the service life of the smoke inlet and outlet box.

[0045] In some embodiments, the multi-layer panel structure smoke inlet and outlet box further includes a single-layer lifting device 3, which is disposed on the box top plate and the smoke outlet partition 110. The single-layer lifting device 3 can be located at the central axis of the box top plate and extend through the flange opening of the box top plate to the inner box body 108.

[0046] Combined with reference Figure 5 The single-layer lifting device 3 includes a cylinder 4, a floating joint 5, a lifting shaft 6, and a valve cover 12. One end of the lifting shaft 6 is connected to the cylinder 4 via the floating joint 5, and the other end is connected to the valve cover 12. The smoke outlet baffle 110 is provided with a hole corresponding to the valve cover 12. Specifically, the connection between the single-layer lifting device 3 and the smoke outlet baffle 110 is provided with a hole corresponding to the valve cover 12. By stretching the valve cover 12, the hole in the smoke outlet baffle 110 corresponding to the valve cover 12 is opened and closed, thereby connecting the middle space 002 and the upper space 003.

[0047] In some embodiments, the single-layer lifting device 3 further includes a flange cover 11, on which the cylinder 4 is mounted, and a valve cover 12 is located below the flange cover 11. The lifting shaft 6 passes through the center of the flange cover 11, connecting the cylinder 4 to the valve cover 12. The flange cover 11 is used to secure and support the cylinder 4.

[0048] In some embodiments, a first guide sealing assembly 7 is provided at the center of the flange cover 11 , and the first guide sealing assembly 7 is tightly fitted with the lifting shaft 6 to ensure the lifting effect of the single-layer lifting device 3 on the flue gas.

[0049] In some embodiments, the single-layer lifting device 3 further includes a valve seat assembly 9, a cylinder support 10, and a single-layer connecting rod 13. The single-layer connecting rod 13 is fixed below the flange cover 11, the valve seat assembly 9 is fixedly connected to the single-layer connecting rod 13, the cylinder support 10 is fixed above the flange cover 11, and the cylinder 4 is fixedly connected to the cylinder support 10. The valve seat assembly 9 is used to place the valve cover 12; the single-layer connecting rod 13 is used to connect the valve seat assembly 9, specifically connecting the valve seat assembly 9 and the flange cover 11; and the cylinder support 10 is used to fix and support the cylinder 4.

[0050] Specifically, the single-layer lifting device 3 is fixedly connected to the box top plate via a flange cover 11 and to the smoke outlet baffle 110 via a valve seat assembly 9. The single-layer lifting device 3 differs from the double-layer lifting device 2 only in that it lacks the baffle assembly 8, the double-layer connecting rod 14, and the baffle assembly 8. That is, the single-layer lifting device 3 is only a single-layer structure and does not require a fixed connection to the smoke inlet baffle 111 via the baffle assembly 8, nor does it require the double-layer connecting rod 14 to increase its extension distance.

[0051] When normal flue gas enters the smoke inlet 101 of the smoke box with a multi-layer plate structure, it is in a normal working state. At this time, the single-layer lifting device 3 is turned on and the double-layer lifting device 2 is closed; that is, normal flue gas cannot flow across the upper space 003, the middle space 002 and the lower space 001 through the double-layer lifting device 2; normal flue gas enters the lower space 001 and passes through the connecting port 105, passes through the external dust collector and the connecting port 106 to enter the upper space 003, and is then pressed into the middle space 002 by the single-layer lifting device 3 and passes out from the smoke outlet 102, extending the normal flue gas movement path and improving the dust removal effect. After normal flue gas enters the connecting port 105 of the lower space 001 and passes through the external dust collector and the connecting port 106 to enter the upper space 003, the flow state of normal flue gas is as follows: Figure 3 As shown by the arrow in the middle, the external dust collector is not marked.

[0052] When the inlet and outlet smoke box of the multi-layer board structure contains both a double-layer lifting device 2 and a single-layer lifting device 3, when normal smoke enters, the single-layer lifting device 3 is opened and the double-layer lifting device 2 is closed; normal smoke enters the lower space 001 and passes out through the connecting port 105, enters the upper space 003 through the external dust collector and the connecting port 106, and is then pressed into the middle space 002 by the single-layer lifting device 3 and passes out through the smoke outlet 102, thereby improving the dust removal effect. When high-temperature flue gas enters the smoke inlet 101, it is an abnormal state, the single-layer lifting device 3 is closed, and the double-layer lifting device 2 is opened; that is, the high-temperature flue gas cannot flow across the upper space 003 and the middle space 002 through the single-layer lifting device 3, and at the same time the double-layer lifting device 2 can be used to connect the lower space 001 and the middle space 002; the high-temperature flue gas enters the lower space 001 from the smoke inlet 101, is lifted to the middle space 002 by the double-layer lifting device 2, and then passes out from the smoke outlet 102, so that the high-temperature flue gas does not pass through the external dust collector, avoiding direct contact between the high-temperature flue gas and the external dust collector, preventing damage to the external dust collector, and extending the service life of the inlet and outlet smoke box.

[0053] In some embodiments, a first guide sealing assembly 7 is provided at the center of the flange cover 11, which is tightly fitted with the lifting shaft 6 through the first guide sealing assembly 7; a second guide sealing assembly 81 is provided at the center of the partition assembly 8, which is tightly fitted with the lifting shaft 6 through the second guide sealing assembly 81.

[0054] Combined with reference Figure 4 、 Figure 5 and Figure 6 The first guide seal assembly 7 includes a guide seal seat 701 , a pressure cover 702 , a sealing ring 703 and a linear bearing 704 .

[0055] The guide sealing seat 701 is provided with a step on the outside for assembly and positioning, and threaded holes are provided on the top and bottom for fixing the pressure cover 702 and the linear bearing 704 respectively. A sealing ring 703 is installed on the top of the guide sealing seat 701. The sealing ring 703 is pressed by fixing the pressure cover 702 to seal the lifting shaft 6. A linear bearing is installed on the bottom of the guide sealing seat 701 to guide the lifting shaft 6.

[0056] Combined with reference Figure 7 In some embodiments, the partition assembly 8 of the double-layer lifting device 2 includes a middle partition 801, an intermediate fixing plate 802, a connecting plate 803 and a connecting sealing gasket 804.

[0057] Double-layer connecting rods 14 pass through the four corners of the middle partition 801 and are fixedly connected to the middle partition 801. The middle fixed plate 802 is fixedly connected to the smoke baffle 110. Evenly distributed threaded holes are provided on the four sides of the middle partition 801 and the middle fixed plate 802 for fixing the connecting plates 803. There are four connecting plates 803. Connecting seals 804 are installed below the middle partition 801 and the middle fixed plate 802. The fixing of the connecting plates 803 compresses the connecting seals 804 and seals the middle partition 801. A second guide seal assembly 81 is provided at the central axis of the middle partition 801 to seal and guide the lifting shaft 6. The second guide seal assembly 81 has the same structure as the first guide seal assembly 7.

[0058] Combined with reference Figure 8 In some embodiments, the valve seat assembly 9 of the double-layer lifting device 2 and the single-layer lifting device 3 includes a valve seat 901 , a valve seat fixing plate 902 , a valve seat seal 903 and a valve cover seal 904 .

[0059] The valve seat fixing plate 902 is fixedly connected to the smoke inlet partition 111. A threaded hole is provided on the valve seat fixing plate 902 for fixing the valve seat 901. A valve seat seal 903 is installed above the valve seat fixing plate 902. The valve seat seal 903 is pressed by fixing the valve seat 901. A groove is provided above the valve seat 901 for installing the valve cover seal 904. Under the action of the cylinder 4, the valve cover 12 presses the valve cover seal 904 downward to close the double-layer lifting device 2 or the single-layer lifting device 3.

[0060] In some embodiments, the front panel of the box is provided with an inspection port 103. There can be two inspection ports 103, one for each of the double-layer lifting device 2 and the other for the single-layer lifting device 3, that is, connecting the upper space 003 and the middle space 002, respectively, to facilitate installation, maintenance, and replacement of the double-layer lifting device 2 and the single-layer lifting device 3.

[0061] In some embodiments, a manhole 104 is provided on the left side panel of the box body. The manhole 104 can be located near the smoke inlet 101 and connected to the lower space 001, making it easy to observe the smoke state at the smoke inlet 101. A manhole 104 can also be provided on the right side panel of the box body. The manhole 104 can be located near the smoke outlet 102, making it easy to observe the smoke state at the smoke outlet 102.

[0062] In summary, the present application provides a smoke inlet and outlet box with a multi-layer plate structure, in which the inner box body is divided into an upper space, a middle space and a lower space by a smoke inlet partition and a smoke outlet partition; when the high-temperature flue gas enters the lower space from the smoke inlet, the high-temperature flue gas can be lifted to the middle space by a lifting device and then discharged from the smoke outlet, and then does not pass through an external dust collector, thereby avoiding direct contact between the high-temperature flue gas and the external dust collector, preventing damage to the external dust collector, and extending the service life of the external dust collector and the smoke inlet and outlet box.

[0063] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the above examples, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above examples, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the examples in the present application.

Claims

1. A multi-layered smoke box, characterized in that: Including inner box and double-layer lifting device; The smoke exhaust fan is connected with the smoke exhaust fan by the bottom end face of the smoke exhaust fan, and the smoke exhaust fan is connected with the smoke exhaust fan by the bottom end face of the smoke exhaust fan. The double-layer lifting device is arranged on the box top plate, the smoke inlet partition and the smoke outlet partition. The double-layer lifting device is used to connect the lower space and the middle space when high-temperature smoke enters the smoke inlet.

2. The multi-layered smoke box according to claim 1, characterized in that: The double-layer lifting device includes a cylinder, a floating joint, a lifting shaft and a valve cover; one end of the lifting shaft is connected to the cylinder through the floating joint, and the other end is connected to the valve cover; a hole corresponding to the valve cover is provided on the smoke inlet partition.

3. The multi-layered smoke box according to claim 2, characterized in that: The double-layer lifting device further comprises a flange cover and a partition assembly; the double-layer lifting device is connected to the box top plate via the flange cover, and is connected to the smoke outlet partition via the partition assembly; The cylinder is arranged above the flange cover, and the valve cover is located below the flange cover; the partition assembly is located between the flange cover and the valve cover; The lifting shaft passes through the center of the flange cover and the center of the partition assembly to connect the cylinder and the valve cover.

4. The multi-layered smoke box according to claim 3, characterized in that: Claims A first guide seal assembly is provided at the center of the flange cover, which is tightly fitted with the lifting shaft through the first guide seal assembly; a second guide seal assembly is provided at the center of the partition assembly, which is tightly fitted with the lifting shaft through the second guide seal assembly.

5. The multi-layered smoke box according to claim 1, characterized in that: It also includes a single-layer lifting device; the single-layer lifting device is arranged on the top plate of the box body and the smoke outlet partition plate, and is used to connect the upper space and the middle space.

6. The multi-layered smoke box according to claim 5, characterized in that: The single-layer lifting device includes a cylinder, a floating joint, a lifting shaft and a valve cover; one end of the lifting shaft is connected to the cylinder through the floating joint, and the other end is connected to the valve cover; a hole corresponding to the valve cover is provided on the smoke outlet baffle.

7. The multi-layered smoke box according to claim 6, characterized in that: The single-layer lifting device further includes a flange cover; the single-layer lifting device is connected to the top plate of the box body through the flange cover; The cylinder is arranged above the flange cover, and the valve cover is located below the flange cover; the lifting shaft passes through the center position of the flange cover to connect the cylinder and the valve cover.

8. The multi-layered smoke box according to claim 7, characterized in that: A first guide seal assembly is provided at the center of the flange cover, and the flange cover is tightly fitted with the lifting shaft through the first guide seal assembly.

9. The multi-layered smoke box according to claim 1, characterized in that: The front plate of the box body is provided with an inspection port communicating with the middle space.

10. The multi-layered smoke box according to claim 1, characterized in that: The left side plate of the box body is provided with a manhole communicating with the lower space.

Images