Smoke chamber smoke exhaust pipeline

Abstract

The utility model relates to the technical field of cement processing equipment, in particular to a smoke chamber smoke exhaust pipeline. According to the technical scheme, the smoke exhaust device comprises a smoke exhaust pipe, screw rods, flow guide plates and mounting sleeves, the flow guide plates distributed at equal intervals are arranged on the inner wall of the smoke exhaust pipe, a sealing ring is embedded in the smoke exhaust pipe, the screw rods are rotationally mounted in the sealing ring, the outer walls of the flow guide plates are sleeved with the mounting sleeves, scraping rings are arranged in the mounting sleeves, and the scraping rings are arranged on the inner wall of the smoke exhaust pipe. A connecting plate is connected between the guide plates, and scrapers are arranged on the outer walls of the front end and the rear end of the mounting sleeve. The guide plate is arranged in the smoke pipe, cement raw materials to be fired are guided, the contact time between the cement raw materials and smoke is prolonged, and the problems that the materials directly pass through the smoke pipe, the contact time between the materials and waste heat is short, the heat exchange effect is not ideal, and the waste heat utilization effect is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cement processing equipment, in particular to a smoke exhaust pipe in a smoke chamber. Background Art

[0002] The smoke chamber of the cement kiln is connected to the kiln head. During the cement production process, the raw materials react at high temperature in the cement kiln and produce waste gas, which is discharged through the smoke chamber. The smoke chamber is located on one side of the cement kiln. The exhaust pipe leads the waste gas from the smoke chamber and discharges it into the atmosphere through appropriate treatment measures.

[0003] Publication number CN215725170U retrieved discloses a new type of cement kiln smoke chamber, including a smoke chamber body, a rotary kiln and a decomposition furnace, wherein the smoke chamber body is arranged between the kiln tail of the rotary kiln and the bottom of the decomposition furnace, and the rotary kiln is connected to the decomposition furnace; a constriction is arranged at the connection between the smoke chamber body and the bottom of the decomposition furnace; the smoke chamber body is connected to the rear kiln mouth of the rotary kiln, the bottom of the smoke chamber is arranged as a slope, and a feeding pipe is provided on its side wall, and the material enters the rotary kiln from the feeding pipe along the smoke chamber slope; the inner side of the outer shell of the smoke chamber slope is provided with heat insulation material, refractory castable material and high temperature resistant grate plate. The new type of cement kiln smoke chamber of the utility model adopts integral casting, which is convenient for construction; it can ensure that the surface of the smoke chamber slope is flat and smooth, can reduce crusting and improve structural strength, and is used in the production line of cement kiln for co-disposal of domestic waste, and the service life of the smoke chamber slope is increased from about half a year to about 5 years; at the same time, waste utilization is realized to save costs.

[0004] CN215725170 has significant advantages when used, but there are still defects when used. The smoke exhaust duct is vertically connected with the smoke chamber. The material needs to pass through the smoke chamber when added to the kiln head, and exchange heat with the waste heat discharged from the smoke chamber to preheat the material. However, the material directly passes through the smoke pipe and has a short contact time with the waste heat. The heat exchange effect is not ideal and the waste heat utilization effect is poor. For this reason, we propose a smoke chamber smoke exhaust duct to solve the existing problems. Utility Model Content

[0005] The utility model aims to provide a smoke exhaust pipe for a smoke chamber in view of the problems existing in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a smoke exhaust duct in a smoke chamber, comprising a smoke exhaust pipe, a screw, a guide plate and a mounting sleeve, the inner wall of the smoke pipe is provided with equidistantly distributed guide plates, a sealing ring is embedded and installed inside the smoke exhaust pipe, a screw is rotatably installed inside the sealing ring, the outer walls of the guide plates are sleeved with mounting sleeves, a scraper ring is provided inside the mounting sleeves, a connecting plate is connected between the guide plates, and scrapers are provided on the outer walls of the front and rear ends of the mounting sleeve.

[0007] When a smoke exhaust duct in a smoke chamber in the present solution is used, a liner is installed inside the smoke pipe. When the material is transported from top to bottom into the smoke chamber and into the kiln head, the material inside the smoke pipe is intercepted by the guide plate. The guide plate reduces the material flow rate, and the material flows through the inclined surface and the upper end of the guide plate, and contacts with the high-temperature smoke in this process, rotating the rotary rod, driving the screw to rotate, and the rotational force of the screw acts on the inside of the bearing, and acts on the mounting sleeve through the connecting plate. The mounting sleeve drives the scraper and the hanging ring to scrape the inner walls of the front and rear ends of the smoke pipe and the outer wall of the guide plate to scrape off the adhered scale.

[0008] Preferably, the inner wall of the smoke pipe is rectangular, which ensures the effective movement of the installation sleeve.

[0009] Preferably, the inner wall of the smoke pipe is provided with equidistantly distributed lining plates, and the lining plates are rotatably mounted on the smoke pipe by bolts. The lining plates improve the wear resistance and corrosion resistance of the smoke pipe and increase the service life of the smoke pipe.

[0010] Preferably, the guide plates are relatively distributed, and the lower inclined surfaces of the guide plates are all downward and distributed inward. The guide plates guide and transport the materials to the lower positions.

[0011] Preferably, the outer wall of the screw is provided with symmetrically distributed rotating rods, the outer wall of the smoke pipe is provided with symmetrically distributed mounting covers, the mounting covers are provided with screw holes, and the screws are rotatably inserted into the screw holes. When the screws are rotated, the rotating rods are used to grip and apply force, and the screw holes and the screws play the function of threaded engagement to fix the screws.

[0012] Preferably, the inner wall of the scraper ring is fitted with the outer wall of the guide plate, and the fitting surface with the guide plate is conical, and the scraper is fitted with the inner wall box of the smoke exhaust pipe.

[0013] Preferably, a bearing is embedded and installed inside one end of the connecting plate, and one end of the screw is rotatably inserted into the bearing. The rotational force of the screw acts on the inside of the bearing, and the driving force acts on the connecting plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model sets the smoke pipe in a rectangular shape and sets a plurality of relatively distributed guide plates inside, thereby prolonging the time for materials to pass through the smoke chamber, improving the contact with high-temperature smoke, increasing the heat exchange time, improving the heat exchange efficiency, and reducing the energy consumption when the rotary kiln burns materials;

[0016] 2. At the same time, the hanging ring on the outside of the guide plate regularly cleans the guide plate to avoid accumulation of scale. At the same time, the inner walls of the front and rear ends of the smoke pipe are scraped to clean up the scaling problem and improve the blockage problem of the smoke pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the main cross-sectional enlarged structure of the installation sleeve of the utility model;

[0020] Figure 4 It is a schematic diagram of the main cross-sectional three-dimensional structure of the guide plate of the utility model.

[0021] Figure numerals: 1, smoke exhaust pipe; 2, screw; 3, lining plate; 4, scraper; 5, guide plate; 6, connecting plate; 7, mounting cover; 8, scraper ring; 9, screw hole; 10, sealing ring; 11, bearing; 12, mounting sleeve; 13, rotating rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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.

[0023] like Figure 1-Figure 4 As shown, the utility model proposes a smoke exhaust duct for a smoke chamber, comprising a smoke exhaust pipe 1, a screw 2, a guide plate 5 and a mounting sleeve 12. The inner wall of the smoke pipe is rectangular, and the inner wall of the smoke pipe is provided with equidistantly distributed lining plates 3, and the lining plates 3 and the smoke pipe are rotatably mounted by bolts. The inner wall of the smoke pipe is provided with equidistantly distributed guide plates 5, and the guide plates 5 are relatively distributed, and the lower parts of the inclined surfaces of the guide plates 5 are all downward and distributed inwardly. A sealing ring 10 is embedded and installed inside the smoke exhaust pipe 1, and a screw 2 is rotatably installed inside the sealing ring 10, and the outer wall of the screw 2 is provided with symmetrically distributed rotating rods 13.

[0024] Based on the implementation steps of Example 1: the material is transported to the inside of the kiln head through the smoke pipe, and the material falls onto the guide plate 5. The guide plate 5 guides the material, slowing down the falling time, prolonging the time it stays in the smoke pipe, and prolonging the contact time with the exhaust waste heat of the smoke chamber, thereby improving the heat exchange effect and enhancing the utilization of waste heat.

[0025] like Figure 1-Figure 4As shown, compared with the first embodiment, a smoke exhaust pipe 1 for a smoke chamber proposed by the utility model also includes: a symmetrically distributed mounting cover 7 is provided on the outer wall of the smoke pipe, a screw hole 9 is opened inside the mounting cover 7, a screw rod 2 is rotatably inserted into the screw hole 9, an outer wall of the guide plate 5 is sleeved with a mounting sleeve 12, a scraper ring 8 is provided inside the mounting sleeve 12, the inner wall of the scraper ring 8 is fitted with the outer wall of the guide plate 5, and the fitting surface with the guide plate 5 is conical, a connecting plate 6 is connected between the guide plates 5, a bearing 11 is embedded and installed at one end of the connecting plate 6, one end of the screw rod 2 is rotatably inserted into the bearing 11, and a scraper 4 is provided on the outer walls of the front and rear ends of the mounting sleeve 12, and the scraper 4 is fitted with the inner wall box of the smoke exhaust pipe 1.

[0026] In this embodiment, the inside of the smoke pipe will accumulate dirt after long-term use, especially a guide device is added inside the smoke pipe. By regularly rotating the screw 2, the connecting plate 6 is pushed, the installation sleeve 12 is driven to move, and the scraper 4 and the hanging ring are driven to scrape the inner walls of the front and rear ends of the smoke pipe and the outer wall of the guide plate 5. The scale adhering to the inner walls of the front and rear ends of the smoke pipe and the outer wall of the guide plate 5 is separated, enters the kiln head and then enters the rotary kiln, which is used as cement raw materials, thereby improving the stability of the smoke chamber.

[0027] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A smoke exhaust pipe for a smoke chamber, comprising a smoke exhaust pipe (1), a screw (2), a guide plate (5) and a mounting sleeve (12), characterized in that: The inner wall of the smoke pipe is provided with guide plates (5) distributed at equal intervals, a sealing ring (10) is embedded and installed inside the smoke exhaust pipe (1), a screw (2) is rotatably installed inside the sealing ring (10), the outer walls of the guide plates (5) are sleeved with mounting sleeves (12), a scraper ring (8) is arranged inside the mounting sleeve (12), connecting plates (6) are connected between the guide plates (5), and scrapers (4) are arranged on the outer walls of the front and rear ends of the mounting sleeve (12).

2. A smoke exhaust duct for a smoke chamber according to claim 1, characterized in that: The inner wall of the smoke tube is rectangular.

3. The smoke exhaust duct of a smoke chamber according to claim 1, characterized in that: The inner wall of the smoke pipe is provided with lining plates (3) distributed at equal intervals, and the lining plates (3) are rotatably mounted on the smoke pipe by means of bolts.

4. The smoke exhaust duct of a smoke chamber according to claim 1, characterized in that: The guide plates (5) are relatively distributed, and the lower parts of the inclined surfaces of the guide plates (5) are all downwardly facing and distributed inwardly.

5. The smoke exhaust duct of a smoke chamber according to claim 1, characterized in that: The outer wall of the screw rod (2) is provided with symmetrically distributed rotating rods (13), the outer wall of the smoke pipe is provided with symmetrically distributed mounting covers (7), the mounting covers (7) are provided with screw holes (9) inside, and the screw rod (2) is rotatably inserted into the screw holes (9).

6. The smoke exhaust duct of a smoke chamber according to claim 1, characterized in that: The inner wall of the scraper ring (8) is fitted with the outer wall of the guide plate (5), and the fitting surface with the guide plate (5) is conical. The scraper plate (4) is fitted with the inner wall of the smoke exhaust pipe (1).

7. The smoke exhaust duct of a smoke chamber according to claim 1, characterized in that: A bearing (11) is embedded and installed inside one end of the connecting plate (6), and one end of the screw rod (2) is rotatably inserted into the bearing (11).

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