Material scattering device of cement preheater

Abstract

The utility model relates to the field of cement production equipment, in particular to a material scattering device of a cement preheater. Comprising a shell, a material scattering plate arranged in the shell and a feeding opening formed in the top of the shell, a rotating shaft is arranged on the material scattering plate, the two ends of the rotating shaft are rotationally connected to the side wall of the shell and extend out of the shell, rotating rods are arranged at the two ends of the rotating shaft, and the rotating rods are arranged on the rotating shaft. A sliding groove is formed in the rotating rod in the length direction of the rotating rod, a lifting block is arranged on the shell, a sliding column is arranged on the lifting block, the sliding column is inserted into the sliding groove, the sliding column is in sliding fit with the sliding groove, and a driving assembly for driving the lifting block to ascend and descend is arranged on the shell. The material scattering device has the technical effect that the angle of the material scattering plate can be adjusted.

Description

Technical Field

[0001] This application relates to the field of cement production equipment. Specifically, it relates to a material spreading device for a cement preheater. Background Art

[0002] The cement preheater is one of the important equipment in the cement production process and is usually located at the front end of the cement production line. Its main function is to preheat the solid raw materials so that the solid raw materials reach a certain heat and chemical properties before entering the kiln, thereby improving the thermal efficiency and production efficiency of the kiln. The working principle of the cement preheater is to make full use of the heat enthalpy in the hot air flow discharged from the rotary kiln and the decomposition furnace to heat the raw meal, so that the raw meal exchanges heat with the hot air flow for raw meal preheating and partial carbonate decomposition. Then the raw meal enters the decomposition furnace or the rotary kiln to continue heating and decomposing, and is calcined into clinker, and the heat-exchanged air flow is separated and discharged.

[0003] In the current production process, materials are added to the air duct of the preheater. For this reason, a material spreading device is provided on the air duct of the preheater in order to evenly spread the materials into the air duct. Generally, an inclined material spreading plate is arranged in the material spreading device. After the materials enter the material spreading device, they fall on the material spreading plate under the action of gravity, so that the agglomerated raw materials are broken up and then enter the air duct, avoiding the phenomenon that the lump materials rush down along the slope of the material spreading plate and cause blockage. However, the angle of the current material spreading plate is generally fixed and cannot be adjusted according to needs. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a material spreading device for a cement preheater, which can solve the technical problem that the angle of the material spreading plate cannot be adjusted.

[0005] The embodiments of this application provide a material spreading device for a cement preheater, which adopts the following technical solutions.

[0006] A material spreading device for a cement preheater includes a housing, a material spreading plate arranged in the housing, a feed inlet arranged at the top of the housing. A rotating shaft is arranged on the material spreading plate, and both ends of the rotating shaft are rotatably connected to the side walls of the housing. Both ends of the rotating shaft extend outside the housing. Rotating rods are arranged at both ends of the rotating shaft. A chute is arranged on the rotating rod along the length direction of the rotating rod. A lifting block is arranged on the housing, and a sliding column is arranged on the lifting block. The sliding column is inserted into the chute, and the sliding column is slidably matched with the chute. A driving component for driving the lifting block to lift is arranged on the housing.

[0007] Further, the driving assembly includes a driving motor disposed on the housing, a lead screw disposed on the output shaft of the driving motor, the lead screw is threadedly connected to the lifting block, a guiding column is disposed on the housing along the length direction of the lead screw, and the guiding column slidably penetrates through the lifting block.

[0008] Further, one end of the lead screw is provided with a synchronous pulley, and a synchronous belt is connected in a covering manner between the synchronous pulleys of the two lead screws.

[0009] Further, two limiting blocks are disposed on the outer side walls of the opposite sides of the housing, and the rotating rod is located between the two limiting blocks.

[0010] Further, an arc surface is disposed on the inner wall of the housing, the arc surface is coaxially disposed with the rotating shaft, one side edge of the material spreading plate abuts against the arc surface, and the material spreading plate is in sliding fit with the arc surface.

[0011] Further, an air supply pipe is communicated with the housing, and the air supply pipe is located below the material spreading plate.

[0012] Further, two maintenance openings are disposed on the housing, and the maintenance openings are covered with covers.

[0013] Further, a plurality of rib plates are connected between the lower surface of the rotating shaft and the material spreading plate.

[0014] Advantages of the present utility model:

[0015] When the material spreading plate provided by the present utility model needs to be adjusted, the driving motor operates, driving the lead screw to rotate to drive the lifting block to lift or lower. The sliding column on the lifting block moves in the sliding groove, thereby driving the rotating rod to rotate around the rotating shaft as the center, and then driving the material spreading plate to rotate, so as to adjust the angle of the material spreading plate. Description of the drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of another perspective of an embodiment of the present utility model;

[0019] Figure 3Schematic diagram of the overall structure from another perspective of an embodiment of the present utility model;

[0020] Figure 4 Schematic cross - sectional view of an embodiment of the present utility model.

[0021] The reference numerals are respectively: 1, housing; 11, feed inlet; 12, limiting block; 13, arc surface; 14, air supply pipe; 15, maintenance opening; 2, material spreading plate; 21, rotating shaft; 22, rib plate; 3, rotating rod; 31, sliding groove; 4, driving motor; 41, lead screw; 411, synchronous pulley; 412, synchronous belt; 42, guiding column; 43, lifting block; 431, sliding column; 432, limiting plate; Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Usually, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0024] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0026] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not require the components to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0027] In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] The embodiment of the present application discloses a material spreading device for a cement preheater. Referring to Figures 1-4 , it includes a housing 1, a material spreading plate 2 arranged in the housing 1, and a feed inlet 11 arranged at the top of the housing 1. The material spreading plate 2 is inclined, and one side surface of the housing 1 is open. The side surface of the opening of the housing 1 is fixedly installed on the air duct of the preheater. After the material enters the housing 1 from the feed inlet 11, it falls on the material spreading plate 2 and then enters the air duct of the preheater.

[0029] In addition, a rotating shaft 21 is welded on the material spreading plate 2. The rotating shaft 21 is arranged in the horizontal direction. At the same time, a plurality of rib plates 22 are welded between the rotating shaft 21 and the lower surface of the material spreading plate 2. The rib plates 22 can improve the connection strength between the rotating shaft 21 and the material spreading plate 2. The two ends of the rotating shaft 21 are rotatably supported on the side wall of the housing 1, and the two ends of the rotating shaft 21 extend outside the housing 1. Rotating rods 3 are fixedly installed at both ends of the rotating shaft 21. The rotating rods 3 are arranged perpendicular to the axis direction of the rotating shaft 21. A chute 31 is opened along the length direction of the rotating rod 3 at the end of the rotating rod 3 away from the rotating shaft 21. A lifting block 43 is arranged on the housing 1. A sliding column 431 is welded on the lifting block 43. The sliding column 431 is inserted into the chute 31. The peripheral surface of the sliding column 431 abuts against the opposite inner walls of the chute 31. The sliding column 431 is in sliding fit with the chute 31. A baffle is fixedly installed at the end of the sliding column 431 away from the lifting block 43.

[0030] Meanwhile, a driving assembly for driving the lifting block 43 to lift is provided on the housing 1. Specifically, the driving assembly includes a driving motor 4 fixedly installed on the housing 1 in the vertical direction, a lead screw 41 coaxially and fixedly connected to the output shaft of the driving motor 4. The lead screw 41 is threadedly connected to the lifting block 43. A guide post 42 is fixedly installed on the housing 1 along the length direction of the lead screw 41, and the guide post 42 slidably penetrates through the lifting block 43. When the driving motor 4 operates, it drives the lead screw 41 to rotate to drive the lifting block 43 to lift. The sliding column 431 on the lifting block 43 moves in the sliding groove 31, thereby driving the rotating rod 3 to rotate around the rotating shaft 21, thereby driving the material spreading plate 2 to rotate, so as to adjust the angle of the material spreading plate 2.

[0031] Meanwhile, a synchronous pulley 411 is coaxially and fixedly installed at the bottom end of the lead screw 41. A synchronous belt 412 is connected in a covering manner between the synchronous pulleys 411 between the two lead screws 41. When the driving motor 4 drives one of the lead screws 41 to rotate, the other lead screw 41 can be driven to rotate through the synchronous belt 412, thereby realizing the synchronous rotation of the two lead screws 41. At the same time, two limiting blocks 12 are fixedly installed on the outer side walls of the opposite sides of the housing 1. The rotating rod 3 is located between the two limiting blocks 12. When the rotating rod 3 rotates to adjust the inclination angle of the material spreading plate 2, when the rotating rod 3 rotates to a certain position, the rotating rod 3 touches the limiting block 12, which can limit the further rotation of the rotating rod 3, thereby preventing the inclination angle of the material spreading plate 2 from being too large.

[0032] In addition, an arc surface 13 is provided on the inner wall of the housing 1. The arc surface 13 is coaxial with the rotating shaft 21. One side edge of the material spreading plate 2 abuts against the arc surface 13, and the material spreading plate 2 is in sliding fit with the arc surface 13. The arc surface 13 can facilitate the smoother cooperation between the material spreading plate 2 and the housing 1 when the angle of the material spreading plate 2 is adjusted. In addition, an air supply pipe 14 is communicated with the housing 1. The air supply pipe 14 is connected to a blower. The air supply pipe 14 is located below the material spreading plate 2. When some raw materials fall onto the housing 1 below the material spreading plate 2, the air supply pipe 14 supplies air to blow away this part of the raw materials, thereby preventing the raw materials from accumulating below the material spreading plate 2.

[0033] Two maintenance openings 15 are provided on the housing 1, and covers are covered on the maintenance openings 15. The maintenance openings 15 can facilitate the operator to perform maintenance on the inside of the housing 1.

[0034] The implementation principle of a material spreading device of a cement preheater in an embodiment of the present application is as follows: The driving motor 4 operates, driving the lead screw 41 to rotate to drive the lifting block 43 to lift. The sliding column 431 on the lifting block 43 moves in the sliding groove 31, thereby driving the rotating rod 3 to rotate around the rotating shaft 21, thereby driving the material spreading plate 2 to rotate, so as to adjust the angle of the material spreading plate 2.

[0035] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A cement preheater spreading device, characterized in that: It includes a shell, a material spreading plate arranged in the shell, and a feed port arranged on the top of the shell, the material spreading plate is provided with a rotating shaft, both ends of the rotating shaft are rotatably connected to the side walls of the shell, both ends of the rotating shaft extend to the outside of the shell, both end portions of the rotating shaft are provided with rotating rods, the rotating rods are provided with sliding grooves along the length direction of the rotating rods, a lifting block is provided on the shell, a sliding column is provided on the lifting block, the sliding column is inserted into the sliding groove, the sliding column and the sliding groove are slidably matched, and a driving component for driving the lifting block to rise and fall is provided on the shell.

2. A cement preheater spreading device according to claim 1, characterized in that: The driving assembly includes a driving motor arranged on the housing, a screw rod arranged on the output shaft of the driving motor, the screw rod is threadedly connected to the lifting block, a guide column is arranged on the housing along the length direction of the screw rod, and the guide column slides through the lifting block.

3. A cement preheater spreading device according to claim 2, characterized in that: A synchronous wheel is arranged at one end of the screw rod, and a synchronous belt is covered and connected between the synchronous wheels between the two screw rods.

4. A cement preheater spreading device according to claim 1, characterized in that: Two limiting blocks are arranged on the outer side walls on opposite sides of the shell, and the rotating rod is located between the two limiting blocks.

5. A cement preheater spreading device according to claim 1, characterized in that: An arc surface is arranged on the inner wall of the shell, and the arc surface is arranged coaxially with the rotating shaft. One side edge of the spreading plate contacts the arc surface, and the spreading plate and the arc surface are slidably matched.

6. A cement preheater material spreading device according to claim 1, characterized in that: The shell is connected with an air supply pipe, and the air supply pipe is located below the spreading plate.

7. A cement preheater material spreading device according to claim 1, characterized in that: The shell body is provided with two inspection openings, and the inspection openings are covered with sealing covers.

8. A cement preheater material spreading device according to claim 1, characterized in that: A plurality of ribs are connected between the rotating shaft and the lower surface of the spreading plate.

Images