Preheater

Abstract

The utility model relates to the technical field of pre-heaters, in particular to a pre-heater which comprises a pre-heater body, a first feeding pipe and a scattering box, a gas outlet pipe is arranged at the upper end of the pre-heater body, a gas analyzer is arranged in the gas outlet pipe, an air pipe is arranged at the side end of the pre-heater body, and the scattering box is arranged in the air pipe. A second feeding pipe is arranged on the air pipe in a communicating mode, the scattering box is installed at the upper end of the second feeding pipe, the second feeding pipe is communicated with the scattering box, second rotating shafts which are symmetrically distributed are rotationally installed in the scattering box, scattering rods which are evenly distributed are arranged on the second rotating shafts, and an equipment box is arranged at the side end of the scattering box; and the first feeding pipe is installed at the upper end of the scattering box, a first rotating shaft is rotatably installed in the first feeding pipe, and material guiding plates distributed in an array mode are arranged on the first rotating shaft. The cement feeding device has the advantages that the cement feeding speed can be controlled, cement can be scattered, and exhausted gas can be detected.

Description

Technical Field

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

[0002] The preheater uses the flue gas in the flue at the tail end of the boiler to preheat the air before entering the boiler to a certain temperature through the internal heat sink. It is used to improve the heat exchange performance of the boiler and reduce energy consumption. In the cement production process, the cement raw material will be added to the air duct of the preheater, and the waste heat will be used to preheat the cement raw material. The preheating and partial decomposition of the raw material are completed by the preheater, replacing some functions of the rotary kiln, which can shorten the return kiln length. At the same time, the gas-material heat exchange process in the kiln is carried out in a piled state and moved to the preheater in a suspended state, so that the raw material can be fully mixed with the hot gas discharged from the kiln.

[0003] Currently, when cement is preheated through a preheater, the cement cannot enter the air duct evenly, and there are lumps in the cement, which makes it impossible for hot air to blow it, thus affecting the preheating of the cement. In addition, the preheater does not have a gas detection function, and the exhaust gas cannot be detected, which is not conducive to subsequent analysis and treatment of the gas. Utility Model Content

[0004] The purpose of the utility model is to provide a preheater, which has the advantages of being able to control the cement feeding speed and to break up the cement, and being able to detect the exhausted gas, thereby solving the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a preheater, comprising a preheater body, a first feed pipe and a break-up box, a feed discharge pipe is arranged at the lower end of the preheater body, an air outlet pipe is arranged at the upper end of the preheater body, a gas analyzer is arranged in the air outlet pipe, a second feed pipe connected to an air duct is arranged at the side end of the preheater body, the break-up box is installed at the upper end of the second feed pipe, and the second feed pipe is connected to the break-up box, a second rotating shaft symmetrically distributed is rotatably installed in the break-up box, and evenly distributed break-up rods are arranged on the second rotating shaft, an equipment box is arranged at the side end of the break-up box, the first feed pipe is installed at the upper end of the break-up box, a feed hopper is arranged at the upper end of the first feed pipe, a first rotating shaft is rotatably installed in the first feed pipe, and a material guide plate distributed in an array is arranged on the first rotating shaft.

[0006] Preferably, a support leg is installed at the lower end of the preheater body, and three support legs are arranged in an array with respect to the preheater body.

[0007] Preferably, the second rotating shaft extends into the equipment box and is installed with gears, and the gears are meshed and connected with each other.

[0008] Preferably, a second drive box is installed in the equipment box, a drive device is arranged in the second drive box, and the main shaft of the drive device is connected to the axis of the gear located above. The drive device in the second drive box can make the gear rotate when it is working.

[0009] Preferably, a first drive box is installed at the front end of the first feed pipe, a drive device is arranged in the first drive box, and the main shaft of the drive device is connected to the axis of the first rotating shaft. The drive device in the first drive box can rotate the first rotating shaft.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: cement is added into the feed hopper, and the first rotating shaft can be rotated by the operation of the driving device in the first driving box, and the cement can be driven into the breaking box with the cooperation of the guide plate, so that the feeding speed of the cement can be controlled, and the second rotating shaft can be rotated by the operation of the driving device in the second driving box, and the cement can be broken up by the breaking rod to prevent the entry of agglomerated cement, which is convenient for cement preheating. When the preheater is working, the gas will be discharged from the outlet pipe, and the gas can be detected by the gas analyzer, and the gas composition can be further analyzed, which is convenient for subsequent gas processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view structural schematic diagram of the utility model;

[0012] Figure 2 It is a partial front view structural schematic diagram of the utility model;

[0013] Figure 3 For the utility model Figure 1 Schematic diagram of the enlarged structure of A.

[0014] The reference numerals and names in the figures are as follows:

[0015] 1. Exhaust pipe; 2. Gas analyzer; 3. Preheater body; 4. Support legs; 5. Feed pipe; 6. Air duct; 7. Second feed pipe; 8. Feed hopper; 9. First drive box; 10. First feed pipe; 11. Equipment box; 12. Breaking box; 13. First rotating shaft; 14. Guide plate; 15. Gear; 16. Second drive box; 17. Second rotating shaft; 18. Breaking rod. DETAILED DESCRIPTION

[0016] 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.

[0017] Embodiment 1

[0018] See also Figures 1 to 3 The utility model provides an embodiment: a preheater, including a preheater body 3, a first feed pipe 10 and a scattering box 12, the lower end of the preheater body 3 is installed with a support leg 4, the support leg 4 is provided with three array-distributed about the preheater body 3, the lower end of the preheater body 3 is provided with a feed pipe 5, the upper end of the preheater body 3 is provided with an outlet pipe 1, the outlet pipe 1 is provided with a gas analyzer 2, the side end of the preheater body 3 is provided with an air duct 6, and the air duct 6 is provided with a second feed pipe 7 in communication. The preheater body 3 in the utility model is a well-known device, and its working principle and circuit connection are well known to those skilled in the art, and are conventional means or common knowledge, so they will not be repeated here, and those skilled in the art can make any selection according to their needs or convenience.

[0019] In this embodiment, when the preheater body 3 is in operation, gas will be discharged from the gas outlet pipe 1, and the preheated cement can be discharged from the discharge pipe 5. When the gas is discharged, the gas can be detected by the gas analyzer 2, which is convenient for subsequent gas processing.

[0020] Embodiment 2

[0021] See also Figures 1 to 3 , an embodiment provided by the utility model: a preheater, compared with the first embodiment, this embodiment also includes: the scattering box 12 is installed at the upper end of the second feeding pipe 7, and the second feeding pipe 7 is connected to the scattering box 12, and the scattering box 12 is rotatably installed with a second rotating shaft 17 that is symmetrically distributed, and the second rotating shaft 17 is provided with evenly distributed scattering rods 18, and the side end of the scattering box 12 is provided with an equipment box 11, and the second rotating shaft 17 extends to the equipment box 11 and is installed with a gear 15, and the gears 15 are meshed and connected with each other, and a second driving box 16 is installed in the equipment box 11, and a driving device is provided in the second driving box 16, and the main shaft of the driving device is connected to the axis of the gear 15 located above, and the first feeding pipe 10 is installed on the upper end of the breaking box 12, and a feed hopper 8 is arranged on the upper end of the first feed pipe 10. A first rotating shaft 13 is rotatably installed in the first feed pipe 10, and a material guide plate 14 distributed in an array is arranged on the first rotating shaft 13. A first driving box 9 is installed at the front end of the first feed pipe 10, and a driving device is arranged in the first driving box 9. The main shaft of the driving device is connected to the axis of the first rotating shaft 13. The driving device in the first driving box 9 and the driving device in the second driving box 16 in the utility model are well-known devices, and their working principles and circuit connections are well known to those skilled in the art, and are conventional means or common knowledge, so they will not be repeated here. Those skilled in the art can make any selection according to their needs or convenience.

[0022] In this embodiment, cement is added into the feed hopper 8, and the first rotating shaft 13 can be rotated by the operation of the driving device in the first driving box 9, and the cement can be driven into the breaking box 12 with the cooperation of the guide plate 14. The second rotating shaft 17 can be rotated by the operation of the driving device in the second driving box 16. After the cement enters the breaking box 12, the breaking rod 18 can be used to break up the cement. The broken cement can enter the air duct 6 from the second feeding pipe 7, and the wind force in the air duct 6 can transport the cement to the preheater body 3 for preheating treatment.

[0023] 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 preheater, comprising a preheater body (3), a first feed pipe (10) and a scattering box (12), characterized in that: The lower end of the preheater body (3) is provided with a feed pipe (5), the upper end of the preheater body (3) is provided with an outlet pipe (1), a gas analyzer (2) is provided in the outlet pipe (1), the side end of the preheater body (3) is provided with an air duct (6), a second feed pipe (7) connected to the air duct (6) is provided, the break-up box (12) is installed at the upper end of the second feed pipe (7), and the second feed pipe (7) is connected to the break-up box (12), and a rotating cylinder (2) is provided in the break-up box (12). A second rotating shaft (17) is installed in a symmetrical distribution, and evenly distributed breaking rods (18) are arranged on the second rotating shaft (17). An equipment box (11) is arranged at the side end of the breaking box (12). The first feeding pipe (10) is installed at the upper end of the breaking box (12), and a feeding hopper (8) is arranged at the upper end of the first feeding pipe (10). A first rotating shaft (13) is rotatably installed in the first feeding pipe (10), and a material guide plate (14) distributed in an array is arranged on the first rotating shaft (13).

2. A preheater according to claim 1, characterized in that: A support leg (4) is installed at the lower end of the preheater body (3), and the support legs (4) are provided with three arranged in an array with respect to the preheater body (3).

3. A preheater according to claim 1, characterized in that: The second rotating shaft (17) extends to the equipment box (11) and is equipped with a gear (15), and the gears (15) are meshed and connected with each other.

4. A preheater according to claim 1, characterized in that: A second driving box (16) is installed in the equipment box (11), and a driving device is arranged in the second driving box (16). The main shaft of the driving device is connected to the axis of the gear (15) located above.

5. A preheater according to claim 1, characterized in that: A first driving box (9) is installed at the front end of the first feeding pipe (10), a driving device is arranged in the first driving box (9), and the main shaft of the driving device is connected to the axis of the first rotating shaft (13).

Images