Resistance reducing device for kiln tail preheater

Abstract

The utility model discloses a kiln tail preheater resistance reducing device which comprises a preheater body, an air inlet assembly is arranged on the outer wall of one side of the preheater body, an air inlet pipe is arranged on the outer wall of one side of the air inlet assembly, a dustproof net is installed in the air inlet pipe through bolts, and a connecting shaft is installed in the center of the outer wall of one side of the dustproof net through a bearing. The air inlet assembly comprises a mounting cylinder, and a driving motor is mounted at the top end of the mounting cylinder through a bolt; when the driving motor is operated to start, the mounting shaft can drive the fan blades to rotate, so that outside air flows into the air inlet assembly through the air inlet pipe, the speed of the air flowing into the preheater body is increased, meanwhile, the bevel gear I and the bevel gear II can enable the connecting shaft to drive the iron wire brush to rotate, and self-cleaning of the dustproof net is achieved; only one power device is needed in the process, the cost of the preheater body can be reduced, and the rear air inlet pipe faces downwards so that dust swept off by the iron wire brush can be discharged conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of kiln tail preheaters, in particular to a kiln tail preheater resistance reduction device. Background Art

[0002] The preheater uses the flue gas in the flue at the tail of the kiln to preheat the air entering the kiln head to a certain temperature through the internal heat sink. It is used to improve the heat exchange performance of the cement kiln and reduce energy consumption.

[0003] For example, a kiln tail preheater resistance reduction device with application number CN202223024745.0 and authorization announcement date 20230418. Its technical solution includes: a preheater body, a first drive motor and a second drive motor, the bottom end face of the preheater body is installed with a base, one end of the preheater body is provided with an air inlet pipe, the bottom end face of the air inlet pipe is embedded with a first collecting hopper, and the inner wall of the air inlet pipe is welded with a first filter screen, the output shaft of the first drive motor is welded with a first rotating shaft, and the first rotating shaft is installed with a first bristle through a first fixed frame, the bottom end face of the outlet pipe is embedded with a second collecting hopper, and the inner wall of the second collecting hopper is welded with a second filter screen, the output shaft of the second drive motor is welded with a second rotating shaft, and the second rotating shaft is installed with a second bristle through a second fixed frame. The utility model meets the use of the kiln tail preheater, can filter smoke and dust, and is convenient for later cleaning and maintenance.

[0004] During the use of the kiln tail preheater mentioned above and in the prior art, in order to prevent the internal accumulation of smoke and dust from causing condensation and blockage and increasing resistance, a cleaning structure is set to clean the dustproof net. However, the cleaning structure generally requires additional power, which makes the structure of the kiln tail preheater larger and more complicated, and the cost is higher. In addition, the subsequent dust discharge still requires manual assistance. Therefore, it is urgent to design a kiln tail preheater resistance reduction device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a resistance reducing device for a kiln tail preheater to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A resistance reduction device for a kiln tail preheater comprises a preheater body, an air inlet assembly is provided on the outer wall of one side of the preheater body, and an air inlet pipe is provided on the outer wall of one side of the air inlet assembly, a dust screen is installed inside the air inlet pipe through bolts, and a connecting shaft is installed at the center of the outer wall of one side of the dust screen through a bearing, a wire brush is installed at one end of the connecting shaft through bolts, the air inlet assembly comprises a mounting cylinder, a driving motor is installed at the top of the mounting cylinder through bolts, and a mounting shaft is installed at the output end of the driving motor through a flat key, two fan blades are installed on the outside of the mounting shaft through a flat key, a bevel gear 2 is provided on the outside of the mounting shaft, a bracket is provided on one side of the top of the inner wall of the mounting cylinder, and a bevel gear 1 meshing with the bevel gear 2 is installed on the outer wall of one side of the bracket through a bearing, and one end of the connecting shaft is inserted into the inside of the bevel gear 1.

[0008] Furthermore, a mounting seat is integrally formed on an outer wall of one side of the mounting tube, and one end of the air inlet pipe is arranged inside the mounting seat.

[0009] Furthermore, one end of the air inlet pipe is integrally formed with a connecting end, and the connecting end is threadedly connected to the inside of the mounting seat.

[0010] Furthermore, a plurality of heaters are installed inside the preheater body by means of bolts, and a gas pipe is plugged into the top end of the preheater body.

[0011] Furthermore, a shell is provided inside the preheater body, and a plurality of through holes are opened on the outer wall at the top of the shell.

[0012] Furthermore, a connecting pipe is inserted into the center of the bottom end of the installation tube, and one end of the connecting pipe extends to the inside of the shell.

[0013] In the above technical scheme, the utility model provides a kiln tail preheater resistance reduction device, (1) through the set driving motor, bevel gear 1, bevel gear 2 and installation shaft, connecting shaft, when the driving motor is started, the installation shaft will rotate with the fan blades, so that the outside air flows into the air inlet assembly through the air inlet pipe, and the speed of air flowing into the preheater body is accelerated. At the same time, the existence of bevel gear 1 and bevel gear 2 will make the connecting shaft rotate with the wire brush to realize the self-cleaning of the dust net. This process only requires one power device, which will reduce the cost of the preheater body, and the position of the air inlet pipe is downward to facilitate the discharge of dust swept by the wire brush; (2) through the set mounting seat and connecting end, the design of the connecting end and the mounting seat makes the air inlet pipe and the mounting tube threadedly connected, which is convenient for workers to quickly remove the air inlet pipe and replace the new dust net; (3) through the set shell and through holes, when the connecting pipe inputs air into the shell, the multiple through holes can divert the air, so that the air flow rate inside the preheater body is reduced, so that the heater can better heat the air and meet the preheating requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 The utility model provides an overall structural schematic diagram of a kiln tail preheater resistance reduction device embodiment.

[0016] Figure 2 A schematic diagram of the internal structure of a preheater body provided in an embodiment of a kiln tail preheater resistance reduction device of the utility model.

[0017] Figure 3 A schematic diagram of the structure of an air inlet assembly is provided for an embodiment of a resistance reduction device for a kiln tail preheater of the utility model.

[0018] Figure 4 A schematic diagram of the internal structure of an installation tube provided in an embodiment of a kiln tail preheater resistance reduction device of the utility model.

[0019] Figure 5 A schematic diagram of the air intake pipe structure provided for an embodiment of a resistance reduction device for a kiln tail preheater of the utility model.

[0020] Description of reference numerals:

[0021] 1. Preheater body; 2. Air supply pipe; 3. Air inlet assembly; 4. Air inlet pipe; 5. Heater; 6. Shell; 7. Through hole; 8. Mounting tube; 9. Connecting pipe; 10. Driving motor; 11. Mounting seat; 12. Bracket; 13. Bevel gear one; 14. Mounting shaft; 15. Fan blade; 16. Bevel gear two; 17. Dust net; 18. Connecting shaft; 19. Wire brush; 20. Connecting end. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1-5As shown, a kiln tail preheater resistance reduction device provided by an embodiment of the utility model comprises a preheater body 1, an air inlet assembly 3 is provided on the outer wall of one side of the preheater body 1, and an air inlet pipe 4 is provided on the outer wall of one side of the air inlet assembly 3, a dustproof net 17 is installed inside the air inlet pipe 4 by bolts, and a connecting shaft 18 is installed at the center of the outer wall of one side of the dustproof net 17 by a bearing, and a wire brush 19 is installed at one end of the connecting shaft 18 by bolts, the air inlet assembly 3 comprises a mounting cylinder 8, a driving motor 10 is installed at the top of the mounting cylinder 8 by bolts, and a mounting shaft 14 is installed at the output end of the driving motor 10 by a flat key, two fan blades 15 are installed on the outside of the mounting shaft 14 by a flat key, a bevel gear 2 16 is provided on the outside of the mounting shaft 14, a bracket 12 is provided on one side of the top of the inner wall of the mounting cylinder 8, and a bevel gear 13 meshing with the bevel gear 2 16 is installed on the outer wall of one side of the bracket 12 by a bearing, and one end of the connecting shaft 18 is inserted into the inside of the bevel gear 13.

[0024] Specifically, in this embodiment, a preheater body 1 is included, an air inlet assembly 3 is provided on one side of the outer wall of the preheater body 1, and an air inlet pipe 4 is provided on one side of the outer wall of the air inlet assembly 3, a dustproof net 17 is installed inside the air inlet pipe 4 by bolts, the dustproof net 17 can prevent dust from flowing into the installation tube 8, and a connecting shaft 18 is installed at the center of the outer wall of one side of the dustproof net 17 by a bearing, and a wire brush 19 is installed at one end of the connecting shaft 18 by bolts, the air inlet assembly 3 includes a installation tube 8, a driving motor 10 is installed at the top of the installation tube 8 by bolts, the model of the driving motor 10 is preferably XHW-60BL99S20, and the output end of the driving motor 10 is installed with a mounting shaft 14 by a flat key, Two fan blades 15 are installed on the outside of the installation shaft 14 through a flat key, and a bevel gear 2 16 is provided on the outside of the installation shaft 14. A bracket 12 is provided on one side of the top of the inner wall of the installation cylinder 8, and a bevel gear 13 meshing with the bevel gear 2 16 is installed on the outer wall of one side of the bracket 12 through a bearing. When the operating drive motor 10 is started, the installation shaft 14 will rotate with the fan blades 15, so that the outside air flows into the air inlet assembly 3 through the intake pipe 4, thereby accelerating the speed at which the air flows into the preheater body 1. At the same time, the existence of the bevel gear 13 and the bevel gear 2 16 will cause the connecting shaft 18 to rotate with the wire brush 19, thereby realizing self-cleaning of the dustproof net 17, and one end of the connecting shaft 18 is inserted into the inside of the bevel gear 13.

[0025] The utility model provides a kiln tail preheater resistance reduction device. When the operating drive motor 10 is started, the installation shaft 14 will rotate with the fan blades 15, so that the outside air flows into the air inlet component 3 through the air inlet pipe 4, and the speed of air flowing into the preheater body 1 is accelerated. At the same time, the existence of the bevel gear 13 and the bevel gear 2 16 will make the connecting shaft 18 rotate with the wire brush 19, so as to realize the self-cleaning of the dustproof net 17. This process only requires one power device, which will reduce the cost of the preheater body 1, and the air inlet pipe 4 is positioned downward to facilitate the discharge of dust swept down by the wire brush.

[0026] In one embodiment provided by the present utility model, Figure 3-5 As shown, a connecting pipe 9 is inserted at the center of the bottom end of the mounting tube 8, and one end of the connecting pipe 9 extends to the inside of the shell 6. A mounting seat 11 is integrally formed on the outer wall of one side of the mounting tube 8. One end of the air intake pipe 4 is arranged inside the mounting seat 11. A connecting end 20 is integrally formed at one end of the air intake pipe 4. When a new dust screen 17 needs to be replaced, the design of the connecting end 20 and the mounting seat 11 makes the air intake pipe 4 and the mounting tube 8 threadedly connected, which is convenient for workers to quickly remove the air intake pipe 4 and replace the new dust screen 17, and the connecting end 20 is threadedly connected to the inside of the mounting seat 11.

[0027] In another embodiment provided by the present utility model, Figure 2 As shown, a plurality of heaters 5 are installed inside the preheater body 1 by bolts, and the model of the heater 5 is preferably JPZ-1.5 inch flange. An air supply pipe 2 is inserted at the top of the preheater body 1, and a shell 6 is provided inside the preheater body 1. A plurality of through holes 7 are provided on the top outer wall of the shell 6. Air flows into the shell 6 through the connecting pipe 9. In this process, the plurality of through holes 7 can divert the air, so that the air flow rate inside the preheater body 1 is reduced, so that the heater 5 can better heat the air.

[0028] Working principle: When the operating drive motor 10 is started, the installation shaft 14 will rotate with the fan blades 15, so that the outside air flows into the air inlet assembly 3 through the air inlet pipe 4, accelerating the speed of air flowing into the preheater body 1. At the same time, the presence of bevel gear 13 and bevel gear 2 16 will cause the connecting shaft 18 to rotate with the wire brush 19 to achieve self-cleaning of the dustproof net 17. At the same time, during this process, air will flow into the shell 6 through the connecting pipe 9. During this process, multiple through holes 7 can divert the air, so that the air flow rate inside the preheater body 1 is reduced, so that the heater 5 can better heat the air. The subsequently heated air will flow into the cement decomposition furnace through the air supply pipe 2 to meet the preheating requirements. When a new dustproof net 17 needs to be replaced later, the design of the connecting end 20 and the mounting seat 11 makes the air inlet pipe 4 and the mounting tube 8 threadedly connected, which is convenient for workers to quickly remove the air inlet pipe 4 and replace the new dustproof net 17.

[0029] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A kiln tail preheater resistance reduction device, comprising a preheater body (1), characterized in that: An air inlet assembly (3) is provided on the outer wall of one side of the preheater body (1), and an air inlet pipe (4) is provided on the outer wall of one side of the air inlet assembly (3). A dust screen (17) is installed inside the air inlet pipe (4) by bolts, and a connecting shaft (18) is installed at the center of the outer wall of one side of the dust screen (17) by a bearing, and a wire brush (19) is installed at one end of the connecting shaft (18) by bolts. The air inlet assembly (3) includes a mounting tube (8), and a driving motor (10) is installed at the top of the mounting tube (8) by bolts. ), and the output end of the driving motor (10) is mounted with a mounting shaft (14) via a flat key, two fan blades (15) are mounted on the outside of the mounting shaft (14) via a flat key, a bevel gear 2 (16) is arranged on the outside of the mounting shaft (14), a bracket (12) is arranged on one side of the top of the inner wall of the mounting cylinder (8), and a bevel gear 1 (13) meshing with the bevel gear 2 (16) is mounted on the outer wall of one side of the bracket (12) via a bearing, and one end of the connecting shaft (18) is inserted into the inside of the bevel gear 1 (13).

2. The resistance reduction device for a kiln tail preheater according to claim 1, characterized in that: A mounting seat (11) is integrally formed on an outer wall of one side of the mounting cylinder (8), and one end of the air intake pipe (4) is arranged inside the mounting seat (11).

3. A kiln tail preheater resistance reduction device according to claim 2, characterized in that: A connecting end (20) is integrally formed at one end of the air inlet pipe (4), and the connecting end (20) is threadedly connected to the interior of the mounting seat (11).

4. The resistance reduction device for a kiln tail preheater according to claim 1, characterized in that: A plurality of heaters (5) are installed inside the preheater body (1) by means of bolts, and a gas delivery pipe (2) is plugged into the top end of the preheater body (1).

5. The resistance reduction device for a kiln tail preheater according to claim 1, characterized in that: A shell (6) is provided inside the preheater body (1), and a plurality of through holes (7) are provided on the top outer wall of the shell (6).

6. The resistance reduction device for a kiln tail preheater according to claim 1, characterized in that: A connecting pipe (9) is inserted into the center of the bottom end of the installation tube (8), and one end of the connecting pipe (9) extends into the interior of the shell (6).

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