Kiln tail heat extraction structure

Abstract

The utility model discloses a kiln tail heat extraction structure which comprises a centrifugal fan and a gas delivery pipe, a filter assembly is installed between the centrifugal fan and the gas delivery pipe and comprises a filter box installed between the centrifugal fan and the gas delivery pipe, and the outer surface of the gas delivery pipe is fixedly communicated with a group of gas distribution pipes. And a valve is mounted on the outer surface of each gas distribution pipe. The centrifugal fan, the air delivery pipe, the filter assembly, the air distribution pipe, the valve, the air multiplier and the mounting assembly are arranged in a matched mode, the air multiplier is mounted at a heat extraction air opening of the kiln through the mounting assembly, the centrifugal fan works to extract heat of the tail of the kiln, and the filter assembly is used for filtering heat of the tail of the kiln. According to the air multiplier, air entering the air multiplier can be filtered, blockage of the interior of the air multiplier is avoided, the air multiplier does not need to be disassembled and cleaned frequently, and therefore the workload of workers can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of kiln heat extraction, in particular to a kiln tail heat extraction structure. Background Art

[0002] A kiln is a device made of refractory materials for firing products. It is an essential facility in pottery molding. The kiln includes a drying area, a dehumidification area, a preheating area, a firing area, a rapid cooling area, a slow cooling area and a kiln tail fast cooling area. Kiln technology is constantly improving and developing. In the prior art, the tail cooling method of the kiln is generally to arrange heat extraction fans at intervals along the length direction of the outer side of the conveying rail at the tail outlet of the kiln. By starting multiple heat extraction fans, the heat of the fired workpieces on the conveying rail is dissipated.

[0003] According to the patent with application number 202122140474.4, a kiln tail heat extraction blower is disclosed, including a centrifugal fan arranged away from the tail end of the kiln, the output end of the centrifugal fan is fixedly connected to a plurality of air multipliers through a main air supply pipe, and the plurality of air multipliers are arranged at equal intervals at the tail end of the kiln, an annular guide cavity is arranged inside the air multiplier, and the air outlet end of the air multiplier is arranged forward close to the inner end of the air multiplier.

[0004] By adopting the above scheme, the principle of a bladeless fan is utilized to discharge hot air through the center of the air multiplier without passing through the mechanical parts of the heat extraction fan, which effectively avoids heat damage to the parts of the exhaust fan and greatly improves the service life of the exhaust fan. However, the above scheme still has certain defects when used. The above scheme is convenient for the installation and disassembly of the air multiplier, thereby facilitating the maintenance and cleaning of the air multiplier. However, the air near the kiln contains a large amount of dust, and the guide cavity inside the air multiplier is relatively narrow. The air directly enters the interior of the air multiplier without being filtered, which can easily cause blockage inside the air multiplier. The air multiplier needs to be frequently disassembled and cleaned, which increases the workload of workers when working in the kiln. To this end, we provide a heat extraction structure at the tail of the kiln to solve the above problems. Utility Model Content

[0005] The problem to be solved by the utility model is to provide a heat extraction structure at the rear of a kiln capable of filtering air.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a heat extraction structure at the rear of a kiln, including a centrifugal fan and an air pipe, a filter assembly is installed between the centrifugal fan and the air pipe, the filter assembly includes a filter box installed between the centrifugal fan and the air pipe, the outer surface of the air pipe is fixedly connected to a group of air distribution pipes, a valve is installed on the outer surface of each of the air distribution pipes, and each of the air distribution pipes is fixedly connected to an air multiplier at one end away from the air pipe, and a mounting assembly is installed on the outside of each air multiplier.

[0007] Preferably, in the above-mentioned heat extraction structure at the rear of the kiln, two installation frames are arranged inside the filter box, filter plates are installed on the inner walls of the two installation frames, connecting plates are installed on the tops of the two installation frames, sealing rings are installed on the bottom surfaces of the two connecting plates, and handles are installed on the upper surfaces of the two connecting plates.

[0008] Preferably, in the above-mentioned heat extraction structure at the rear of the kiln, two connecting blocks are installed on the outer surfaces of the two connecting plates, the upper surface of each connecting block is threadedly connected with bolt 1, and the bottom end of bolt 1 is threadedly connected to the upper surface of the filter box.

[0009] Preferably, in the above-mentioned heat extraction structure at the rear of the kiln, the mounting assembly includes a mounting ring plate, the mounting ring plate is adapted to the air multiplier, and a set of bolts 2 are threadedly connected to the outer surface of the mounting ring plate.

[0010] Preferably, in the above-mentioned heat extraction structure at the rear of the kiln, the front side of the mounting ring plate is fixedly connected with two support blocks, the outer surfaces of the two support blocks are threadedly connected with threaded rods, and the ends of the two threaded rods away from each other are both equipped with rotating blocks.

[0011] Preferably, in the above-mentioned heat extraction structure at the rear of the kiln, the ends of the two threaded rods close to each other are rotatably connected to a clamping frame, and the inner walls of the two clamping frames are installed with a group of anti-slip strips, and the anti-slip strips are in contact with the air multiplier.

[0012] Preferably, in the above-mentioned heat extraction structure at the rear of the kiln, two groups of slide grooves are opened on the front side of the mounting ring plate, and the inner wall of each slide groove is slidably connected with a slider, and the slider is connected to the clamping frame.

[0013] The advantages and beneficial effects of the utility model are:

[0014] The utility model coordinates and arranges a centrifugal fan, an air supply pipe, a filter assembly, an air distribution pipe, a valve, an air multiplier and an installation assembly. The air multiplier is installed at the heat extraction vent of the kiln by utilizing the installation assembly. The centrifugal fan can extract heat from the rear of the kiln. The filter assembly can filter the air entering the air multiplier to avoid blockage inside the air multiplier. There is no need to frequently disassemble and clean the air multiplier, thereby reducing the workload of workers.

[0015] The utility model cooperates with a centrifugal fan, an air multiplier, a filter box, an installation frame, a filter plate, a connecting plate, a sealing ring, a handle, a connecting block and a bolt. Before the air is drawn into the interior of the air multiplier, the air first enters the interior of the filter box. The filter plate inside the filter box can filter dust in the air and prevent dust in the air from entering the interior of the air multiplier. By loosening two bolts, the limiting of the connecting plate and the installation frame can be released, the filter plate can be easily cleaned, and the filtering effect of the structure on the air can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the filter assembly of the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the filter plate of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the installation component of the utility model.

[0020] In the figure: 1. centrifugal fan; 2. air supply pipe; 3. filter assembly; 301. filter box; 302. mounting frame; 303. filter plate; 304. connecting plate; 305. sealing ring; 306. handle; 307. connecting block; 308. bolt one; 4. air distribution pipe; 5. valve; 6. air multiplier; 7. mounting assembly; 701. mounting ring plate; 702. bolt two; 703. support block; 704. threaded rod; 705. rotating block; 706. clamping frame; 707. anti-slip strip; 708. slide groove; 709. slider. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the following is combined with the drawings and embodiments. The following is combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solution in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figures 1 to 4 As shown, a heat extraction structure at the rear of a kiln includes a centrifugal fan 1 and an air pipe 2. A filter assembly 3 is installed between the centrifugal fan 1 and the air pipe 2. The filter assembly 3 includes a filter box 301 installed between the centrifugal fan 1 and the air pipe 2.

[0023] Two threaded connection sleeves are fixedly embedded on the outer surface of the filter box 301, which can conveniently connect the filter box 301 with the air outlet end of the centrifugal fan 1 and the air inlet end of the air supply pipe 2, making it convenient to install and use the filter box 301.

[0024] Two symmetrical installation frames 302 are arranged inside the filter box 301, and filter plates 303 are installed on the inner walls of the two installation frames 302. The filter plates 303 can be conveniently supported by the installation frames 302. When the centrifugal fan 1 is working and draws air into the filter box 301, the dust in the air can be filtered by the filter plates 303.

[0025] A connecting plate 304 is installed on the top of each of the two installation frames 302 , a sealing ring 305 is installed on the bottom of each of the two connecting plates 304 , and a handle 306 is installed on the upper surface of each of the two connecting plates 304 .

[0026] An empty groove matched with the installation frame 302 is opened on the upper surface of the filter box 301, and the top of the installation frame 302 passes through the interior of the empty groove and extends to the outside of the filter box 301, and the outer surface of the installation frame 302 is slidably connected to the inner wall of the empty groove. The provided sealing ring 305 can be used to seal the connection plate 304 and the filter box 301, and the provided handle 306 can be used to conveniently lift the installation frame 302 upwards.

[0027] Two symmetrical connecting blocks 307 are installed on the outer surfaces of the two connecting plates 304 . The upper surface of each connecting block 307 is threadedly connected with a bolt 1 308 , and the bottom end of the bolt 1 308 is threadedly connected to the upper surface of the filter box 301 .

[0028] A threaded hole compatible with bolt 1 308 is opened on the upper surface of the filter box 301, which can facilitate the threaded connection between the bottom end of bolt 1 308 and the filter box 301. Loosening two bolts 1 308 can release the limit on the installation frame 302, thereby facilitating the disassembly, cleaning or replacement of the filter plate 303.

[0029] The outer surface of the gas supply pipe 2 is fixedly connected to a group of gas distribution pipes 4. The number of gas distribution pipes 4 is determined by the number of heat extraction vents of the kiln. A valve 5 is installed on the outer surface of each gas distribution pipe 4. Opening the valve 5 allows the air inside the gas supply pipe 2 to enter the inside of the gas distribution pipe 4. Opening different numbers of valves 5 can conveniently control the heat extraction rate at the tail of the kiln.

[0030] An air multiplier 6 is fixedly connected to one end of each air distribution pipe 4 away from the air supply pipe 2. An annular guide cavity is arranged inside the air multiplier 6. When the centrifugal fan 1 is working, air can be injected into the interior of the air multiplier 6. After passing through the inner cavity of the air multiplier 6, the gas is ejected forward along the inner wall of the air multiplier 6, forming a negative pressure in the center of the air multiplier 6, pulling the air on the back side of the air multiplier 6 forward, and discharging the hot air at the tail end of the kiln.

[0031] A mounting assembly 7 is installed on the outside of each air multiplier 6, and the mounting assembly 7 includes a mounting ring plate 701. The mounting ring plate 701 is compatible with the air multiplier 6. The inner diameter of the mounting ring plate 701 is the same as the diameter of the air multiplier 6. The outer surface of the mounting ring plate 701 is threadedly connected with a group of bolts 702 in a circular array. Threaded holes compatible with the bolts 702 are opened at the heat extraction vent of the kiln, so that the mounting ring plate 701 can be conveniently installed using the bolts 702.

[0032] Two support blocks 703 are fixedly connected to the front of the mounting ring plate 701 . The outer surfaces of the two support blocks 703 are both threadedly connected with threaded rods 704 . Rotating blocks 705 are installed at the ends of the two threaded rods 704 that are away from each other.

[0033] A circle of anti-slip grooves is provided on the outer surface of the rotating block 705. Rotating the rotating block 705 can drive the threaded rod 704 to rotate. By utilizing the threaded fit between the threaded rod 704 and the supporting block 703, the rotation of the threaded rod 704 can move one end of the threaded rod 704.

[0034] The ends of the two threaded rods 704 that are close to each other are rotatably connected to the clamping frame 706. The inner walls of the two clamping frames 706 are installed with a group of anti-slip strips 707 arranged at equal distances, and the anti-slip strips 707 are in contact with the air multiplier 6.

[0035] The rotation of the two threaded rods 704 can make the two clamping frames 706 approach each other, so as to clamp and fix the air multiplier 6. The anti-slip strips 707 can increase the friction force of the inner wall of the clamping frame 706, so as to ensure the fixing effect of the air multiplier 6.

[0036] Two sets of symmetrical sliding grooves 708 are provided on the front side of the mounting ring plate 701 . A sliding block 709 is slidably connected to the inner wall of each sliding groove 708 , and the sliding block 709 is connected to the clamping frame 706 .

[0037] When the threaded rod 704 drives the clamping frame 706 to move, the slider 709 can slide on the inner wall of the slide groove 708, thereby guiding and limiting the clamping frame 706 and ensuring the stability of the clamping frame 706 when moving.

[0038] Working principle: When the structure is in use, the filter box 301 is first installed between the centrifugal fan 1 and the air supply pipe 2, so that the air multiplier 6 installed on the air distribution pipe 4 is placed on the front of the installation component 7, and the two rotating blocks 705 are rotated to drive the two threaded rods 704 to rotate. By utilizing the threaded cooperation between the threaded rods 704 and the support blocks 703, the rotation of the two threaded rods 704 can make the two clamping frames 706 approach each other under the guidance of the slide groove 708 and the slider 709, so as to clamp and fix the air multiplier 6. Then, the mounting ring plate 701 is installed near the heat extraction vent of the kiln using the bolt 2 702, so that the air multiplier 6 corresponds to the heat extraction vent of the kiln. When the centrifugal fan 1 is working, the air can be injected into the interior of the air multiplier 6 through the air supply pipe 2 and the air distribution pipe 4. After passing through the inner cavity of the air multiplier 6, the gas is discharged along the air multiplier 6. 6 is sprayed forward, forming a negative pressure in the center of the air multiplier 6, pulling the air on the back side of the air multiplier 6 forward, and discharging the hot air at the tail end of the kiln. Before the centrifugal fan 1 draws air into the interior of the air multiplier 6, the air first enters the interior of the filter box 301. The filter plate 303 inside the filter box 301 can filter dust in the air, and can prevent dust in the air from entering the interior of the air multiplier 6 and causing blockage of the air multiplier 6. When it is necessary to clean the filter plate 303, loosen two bolts 308 to release the limit on the connecting plate 304, and pull the handle 306 upward to pull the mounting frame 302 and the filter plate 303 out of the interior of the filter box 301, which can facilitate the cleaning of the filter plate 303, and can ensure the filtering effect of the structure on the air and ensure the normal use of the structure.

[0039] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. 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 utility model, unless otherwise specified, "multiple" means two or more.

[0040] It should be noted that the standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the instructions and drawings, and the specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the inventor will not elaborate on them here.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A heat extraction structure at the rear of a kiln, characterized in that: The invention comprises a centrifugal fan (1) and an air supply pipe (2), wherein a filter assembly (3) is installed between the centrifugal fan (1) and the air supply pipe (2), wherein the filter assembly (3) comprises a filter box (301) installed between the centrifugal fan (1) and the air supply pipe (2), wherein the outer surface of the air supply pipe (2) is fixedly connected to a group of air distribution pipes (4), wherein a valve (5) is installed on the outer surface of each of the air distribution pipes (4), wherein one end of each of the air distribution pipes (4) away from the air supply pipe (2) is fixedly connected to an air multiplier (6), and an installation assembly (7) is installed on the outside of each of the air multipliers (6).

2. The heat extraction structure at the rear of the kiln according to claim 1, characterized in that: Two installation frames (302) are arranged inside the filter box (301), the inner walls of the two installation frames (302) are both installed with filter plates (303), the tops of the two installation frames (302) are both installed with connecting plates (304), the bottom surfaces of the two connecting plates (304) are both installed with sealing rings (305), and the upper surfaces of the two connecting plates (304) are both installed with handles (306).

3. The heat extraction structure at the rear of the kiln according to claim 2, characterized in that: Two connection blocks (307) are installed on the outer surfaces of the two connection plates (304), and the upper surface of each connection block (307) is threadedly connected to a bolt 1 (308), and the bottom end of the bolt 1 (308) is threadedly connected to the upper surface of the filter box (301).

4. The heat extraction structure at the rear of the kiln according to claim 1, characterized in that: The mounting assembly (7) comprises a mounting ring plate (701), the mounting ring plate (701) being compatible with the air multiplier (6), and a set of bolts (702) being threadedly connected to the outer surface of the mounting ring plate (701).

5. The heat extraction structure at the rear of the kiln according to claim 4, characterized in that: Two support blocks (703) are fixedly connected to the front of the mounting ring plate (701); threaded rods (704) are threadedly connected to the outer surfaces of the two support blocks (703); and rotating blocks (705) are installed at the ends of the two threaded rods (704) that are away from each other.

6. The heat extraction structure at the rear of the kiln according to claim 5, characterized in that: The ends of the two threaded rods (704) that are close to each other are rotatably connected to a clamping frame (706), and the inner walls of the two clamping frames (706) are each installed with a group of anti-slip strips (707), and the anti-slip strips (707) are in contact with the air multiplier (6).

7. The heat extraction structure at the rear of the kiln according to claim 6, characterized in that: Two groups of slide grooves (708) are provided on the front side of the mounting ring plate (701), and a sliding block (709) is slidably connected to the inner wall of each of the slide grooves (708), and the sliding block (709) is connected to the clamping frame (706).

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