Rotary kiln screening device for lime nitrogen production

Abstract

The utility model discloses a rotary kiln screening device for lime nitrogen production, which comprises a screening box, a first discharge port is arranged on the left side of the screening box in a penetrating manner, a second discharge port is arranged on the right side of the screening box in a penetrating manner, a rotary kiln body is arranged in the screening box in a lap joint manner, and a driving assembly is arranged on the rear side of the screening box. A discharging assembly facilitating even falling of lime nitrogen is arranged in the screening box, and a screening assembly used for screening the lime nitrogen is arranged in the screening box. Lime nitrogen is screened through the vibrating screen, the rotating speed of a first cam in the driving assembly is smaller than that of a second cam, so that the discharging speed of the lime nitrogen is reduced, the screening speed of the lime nitrogen is increased, materials continuously jump and roll over on the screen, the materials are prevented from being stacked and agglomerated, and the screening efficiency is improved through the difference between the screening speed and the discharging speed. Therefore, the lime nitrogen is prevented from being accumulated at the top of the screen, and the accumulated lime nitrogen knot is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kiln screening devices, in particular to a rotary kiln screening device used for lime nitrogen production. Background Art

[0002] Lime nitrogen is a mixture of calcium cyanamide, calcium oxide and other insoluble impurities. It has a light texture and will hydrolyze into monocyanamide and calcium hydroxide when it comes into contact with water. It is insoluble in alcohol and has the odor of calcium carbide or ammonia. In the production process of lime nitrogen, a rotary kiln is usually used. The lime nitrogen raw materials are added into the kiln, and a chemical reaction occurs at high temperature to produce lime nitrogen products.

[0003] The rotary kiln is mainly composed of a cylinder, a transmission device, a supporting device, a sealing device, a combustion device and other parts. The working principle of the rotary kiln is to add the material into the cylinder from the kiln tail. As the cylinder rotates, the material continuously rolls and moves in the cylinder, and is heated by the high-temperature flame generated by the combustion device, thereby realizing the heating, drying, roasting, calcining and other processes of the material. It is mainly divided into the feeding stage, preheating stage, reaction stage and cooling stage.

[0004] After the rotary kiln is discharged, the produced lime nitrogen needs to be screened to control the particle size distribution and remove impurities and unqualified materials. Currently, a vibrating screen is generally used to screen the lime nitrogen. However, the lime nitrogen has a certain temperature after entering the vibrating screen. If too much lime nitrogen enters the vibrating screen, it is easy to cause lime nitrogen accumulation, and the accumulated lime nitrogen is prone to agglomeration. The agglomerated lime nitrogen may be mixed with other impurities, and the agglomerated lime nitrogen usually has a larger particle size. Compared with normal lime nitrogen particles, its particle size distribution is uneven. Based on the above problems, the present application proposes a rotary kiln screening device for lime nitrogen production. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a rotary kiln screening device for lime nitrogen production, which is used to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A rotary kiln screening device for lime nitrogen production includes a screening box, a first discharge port is provided on the left side of the screening box, a second discharge port is provided on the right side of the screening box, a rotary kiln body is overlapped inside the screening box, a drive assembly is provided on the rear side of the screening box, a discharge assembly is provided inside the screening box for facilitating the uniform falling of the lime nitrogen, and a screening assembly for screening the lime nitrogen is provided inside the screening box.

[0008] Preferably, the driving assembly includes a fixed frame fixedly installed on the rear side of the screening box, a driving motor is fixedly provided on the rear side of the fixed frame, a double-groove transmission wheel is fixedly provided on the output end of the driving motor, a transmission belt 1 and a transmission belt 2 are meshed inside the double-groove transmission wheel, a single-groove transmission wheel 1 is meshed inside the transmission belt 1, a rotating shaft is fixedly provided inside the single-groove transmission wheel 1, the rotating shaft is rotatably provided inside the screening box, a cam 1 is fixedly provided at the front end of the rotating shaft, a single-groove transmission wheel 2 is meshed inside the transmission belt 2, a rotating shaft is fixedly provided inside the single-groove transmission wheel 2, and a cam 2 is fixedly provided at the front end of the rotating shaft.

[0009] Preferably, the blanking assembly includes a support plate fixedly installed inside the screening box, a second compression spring is fixedly provided on the top of the support plate, a fixed block is fixedly provided on the top of the second compression spring, and a blanking plate is fixedly provided on the top of the fixed block.

[0010] Preferably, the screening assembly includes a mounting plate fixedly installed inside the screening box, a compression spring 1 is fixedly provided on the top of the mounting plate, a connecting block is fixedly provided on the top of the compression spring 1, a screen is fixedly provided on the top of the connecting block, and a material guide plate is fixedly provided on the left side of the screen.

[0011] Preferably, a discharge plate is fixedly provided on the lower side wall of the screening box, and the discharge plate consists of a vertical support plate and a discharge inclined plate.

[0012] Preferably, the radius of the single-groove transmission wheel 1 is greater than the radius of the double-groove transmission wheel, and the radius of the double-groove transmission wheel is greater than the radius of the single-groove transmission wheel 2.

[0013] Preferably, the cam 1 and the cam 2 are both located inside the screening box, and the specifications of the cam 1 and the cam 2 are the same.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the rotary kiln screening device for lime nitrogen production drives the discharge plate and the screen to vibrate simultaneously through the driving component, so that the discharge plate discharges the lime nitrogen evenly; when the lime nitrogen falls to the top of the screen, the lime nitrogen is screened by the vibrating screen; and the rotation speed of the cam 1 in the driving component is lower than the rotation speed of the cam 2, so that the lime nitrogen discharge speed is reduced and the lime nitrogen screening speed is increased, so that the material continuously jumps and rolls on the screen, thereby preventing the material from piling up and agglomerating; and through the difference between the screening speed and the discharge speed, the lime nitrogen is prevented from accumulating on the top of the screen, thereby preventing the accumulated lime nitrogen from agglomerating. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the structural survey drawing of the utility model;

[0016] Figure 2This is a schematic diagram of the longitudinal section of the structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the local structure of the utility model;

[0018] Figure 4 This is a left view of the local structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the drive assembly structure of the utility model.

[0020] In the figure: 1. Screening box; 2. Discharge port 1; 3. Discharge port 2; 4. Mounting plate; 5. Compression spring 1; 6. Connecting block; 7. Screen; 8. Support plate; 9. Compression spring 2; 10. Fixing block; 11. Unloading plate; 12. Fixing frame; 13. Driving motor; 14. Double-groove transmission wheel; 15. Transmission belt 1; 16. Transmission belt 2; 17. Single-groove transmission wheel 1; 18. Rotating shaft; 19. Cam 1; 20. Single-groove transmission wheel 2; 21. Rotating shaft; 22. Cam 2; 23. Guide plate; 24. Discharge plate; 25. Rotary kiln body. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Reference Figure 1-5A rotary kiln screening device for lime nitrogen production includes a screening box 1, a discharge port 1 2 is provided on the left side of the screening box 1, a discharge port 2 3 is provided on the right side of the screening box 1, a rotary kiln body 25 is overlapped inside the screening box 1, a driving component is provided at the rear side of the screening box 1, a material discharge component is provided inside the screening box 1 to facilitate the uniform drop of lime nitrogen, a screening component for screening lime nitrogen is provided inside the screening box 1, and a driving component includes a fixed frame 12 fixed on the rear side of the screening box 1, and a fixed frame 12 is provided at the rear side of the fixing frame 12. A driving motor 13 is provided, and a double-groove transmission wheel 14 is fixedly provided at the output end of the driving motor 13. A transmission belt 15 and a transmission belt 2 16 are meshed inside the double-groove transmission wheel 14. A single-groove transmission wheel 17 is meshed inside the transmission belt 15. A rotating shaft 18 is fixedly provided inside the single-groove transmission wheel 17. The rotating shaft 18 is rotatably provided inside the screening box 1. A cam 19 is fixedly provided at the front end of the rotating shaft 18. A single-groove transmission wheel 20 is meshed inside the transmission belt 2 16. The radius of the single-groove transmission wheel 17 is larger than that of the double-groove transmission wheel 1 The radius of the moving wheel 14, the radius of the double-groove transmission wheel 14 is greater than the radius of the single-groove transmission wheel 20, so that when the double-groove transmission wheel 14 drives the single-groove transmission wheel 17, a deceleration effect can be achieved. At the same time, when the double-groove transmission wheel 14 drives the single-groove transmission wheel 20, an acceleration effect is achieved. A rotating shaft 21 is fixedly provided inside the single-groove transmission wheel 20, and a cam 22 is fixedly provided at the front end of the rotating shaft 21. The cam 19 and the cam 22 are both located inside the screening box 1. The specifications of the cam 19 and the cam 22 are the same. The cams of the same specifications One 19 and cam two 22 will have a speed difference when driven at different speeds. The output end is driven by the driving motor 13 to drive the double-groove transmission wheel 14 to rotate, and the double-groove transmission wheel 14 drives the single-groove transmission wheel 17 and the single-groove transmission wheel 2 20 to rotate through the transmission belt one 15 and the transmission belt two 16, so that the single-groove transmission wheel 17 and the single-groove transmission wheel 2 20 respectively drive the rotating shaft 18 and the rotating shaft 21 to rotate, and drive the cam one 19 and the cam two 22 to rotate through the rotating shaft 18 and the rotating shaft 21, thereby facilitating the vibration of the blanking plate 11 and the screen 7.

[0023] Specifically, the unloading assembly includes a support plate 8 fixedly installed inside the screening box 1, a compression spring 2 9 is fixedly provided on the top of the support plate 8, a fixed block 10 is fixedly provided on the top of the compression spring 29, and a unloading plate 11 is fixedly provided on the top of the fixed block 10. The screening assembly includes a mounting plate 4 fixedly installed inside the screening box 1, a compression spring 1 5 is fixedly provided on the top of the mounting plate 4, a connecting block 6 is fixedly provided on the top of the compression spring 1 5, a screen 7 is fixedly provided on the top of the connecting block 6, and a guide plate 23 is fixedly provided on the left side of the screen 7. The cam 19 and the cam 22 in the driving assembly simultaneously push the unloading plate 11 and the screen 7 to move, and vibrate under the action of the compression spring 1 5 and the compression spring 2 9, thereby facilitating the vibration unloading and vibration screening of the lime nitrogen discharged from the rotary kiln body 25, and avoiding the accumulation of lime nitrogen and the formation of agglomeration during the screening process.

[0024] Specifically, a discharge plate 24 is fixedly provided on the lower side wall of the screening box 1. The discharge plate 24 is composed of a vertical support plate and a discharge inclined plate. Through the setting of the discharge plate 24, the lime nitrogen that has been screened and fallen can be directly removed from the screening box 1, making the treatment of the screened lime nitrogen more convenient.

[0025] The rotary kiln screening device for lime nitrogen production is connected to a 220V mains power supply, and the main controller can be a conventional known device such as a computer for control.

[0026] During use: after the lime nitrogen in the rotary kiln body 25 enters the interior of the screening box 1, the lime nitrogen first falls to the top of the blanking plate 11, and the output end is driven by the driving motor 13 to drive the double-grooved transmission wheel 14 to rotate, and the double-grooved transmission wheel 14 drives the single-grooved transmission wheel 17 and the single-grooved transmission wheel 2 20 to rotate through the transmission belt 1 15 and the transmission belt 2 16, so that the single-grooved transmission wheel 17 and the single-grooved transmission wheel 2 20 respectively drive the rotating shaft 18 and the rotating shaft 21 to rotate, and drive the cam 19 and the cam 2 22 to rotate through the rotating shaft 18 and the rotating shaft 21, so that the raised portion of the cam 19 pushes the blanking plate 11 to move upward, so that the blanking plate 11 stretches the compression spring 2 9 through the fixed block 10, and when the raised portion of the cam 19 is pressed, the blanking plate 11 is pulled upward by the fixed block 10. After the part moves away from the bottom of the blanking plate 11, the rebound of the blanking plate 11 pulls the fixed block 10 to drive the compression spring 2 9 to move downward, so that the blanking plate 11 vibrates back and forth, so that the blanking plate 11 vibrates and discharges the lime nitrogen on its top, and the lime nitrogen is evenly distributed on the top of the blanking plate 11. When the lime nitrogen moves out from the top of the blanking plate 11, the lime nitrogen falls to the top of the screen 7, and during the rotation of the cam 22, the raised part of the cam 22 will push the screen 7 to stretch the compression spring 1 5 through the connecting block 6. When the raised part of the cam 22 moves away from the bottom of the screen 7, the rebound of the compression spring 1 5 pulls the connecting block 6 to drive the screen 7 to move downward, so that the screen 7 vibrates up and down, thereby vibrating and screening the lime nitrogen.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary kiln screening device for lime nitrogen production, comprising a screening box (1), characterized in that: The left side of the screening box (1) is provided with a first discharge port (2), the right side of the screening box (1) is provided with a second discharge port (3), the interior of the screening box (1) is overlapped with a rotary kiln body (25), the rear side of the screening box (1) is provided with a driving assembly, the interior of the screening box (1) is provided with a discharge assembly for facilitating the uniform falling of lime nitrogen, and the interior of the screening box (1) is provided with a screening assembly for screening lime nitrogen.

2. A rotary kiln screening device for lime nitrogen production according to claim 1, characterized in that: The driving assembly comprises a fixed frame (12) fixedly mounted on the rear side of the screening box (1), a driving motor (13) fixedly arranged on the rear side of the fixed frame (12), a double-grooved transmission wheel (14) fixedly arranged at the output end of the driving motor (13), a transmission belt 1 (15) and a transmission belt 2 (16) meshedly arranged inside the double-grooved transmission wheel (14), a single-grooved transmission wheel 1 (17) meshedly arranged inside the transmission belt 1 (15), a rotating shaft (18) fixedly arranged inside the single-grooved transmission wheel 1 (17), the rotating shaft (18) rotatably arranged inside the screening box (1), a cam 1 (19) fixedly arranged at the front end of the rotating shaft (18), a single-grooved transmission wheel 2 (20) meshedly arranged inside the transmission belt 2 (16), a rotating shaft (21) fixedly arranged inside the single-grooved transmission wheel 2 (20), a cam 2 (22) fixedly arranged at the front end of the rotating shaft (21).

3. A rotary kiln screening device for lime nitrogen production according to claim 1, characterized in that: The blanking assembly comprises a support plate (8) fixedly mounted inside the screening box (1), a second compression spring (9) fixedly arranged on the top of the support plate (8), a fixed block (10) fixedly arranged on the top of the second compression spring (9), and a blanking plate (11) fixedly arranged on the top of the fixed block (10).

4. A rotary kiln screening device for lime nitrogen production according to claim 1, characterized in that: The screening assembly comprises a mounting plate (4) fixedly mounted inside a screening box (1), a compression spring (5) fixedly arranged on the top of the mounting plate (4), a connecting block (6) fixedly arranged on the top of the compression spring (5), a screen (7) fixedly arranged on the top of the connecting block (6), and a material guide plate (23) fixedly arranged on the left side of the screen (7).

5. A rotary kiln screening device for lime nitrogen production according to claim 1, characterized in that: A discharge plate (24) is fixedly provided on the lower side wall of the screening box (1), and the discharge plate (24) is composed of a vertical support plate and a discharge inclined plate.

6. A rotary kiln screening device for lime nitrogen production according to claim 2, characterized in that: The radius of the single-groove transmission wheel (17) is greater than the radius of the double-groove transmission wheel (14), and the radius of the double-groove transmission wheel (14) is greater than the radius of the single-groove transmission wheel (20).

7. A rotary kiln screening device for lime nitrogen production according to claim 2, characterized in that: The cam 1 (19) and the cam 2 (22) are both located inside the screening box (1), and the specifications of the cam 1 (19) and the cam 2 (22) are the same.

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