A raw material preheating device for a cement kiln

Abstract

The utility model provides a cement kiln raw material preheating device, including preheating box, the inside rotatory mounting of preheating box has the material guide plate, the bottom of material guide plate installs drive jacking mechanism, the inside bottom of preheating box installs heating mechanism, drive jacking mechanism includes the jacking rod for jacking material guide plate of sliding insertion preheating box inside side, the first connecting plate of fixed in the outer end of jacking rod, the second connecting plate of fixed in the outside intermediate of first connecting plate, heating mechanism includes fixedly installed in the heat conduction frame of preheating box inside bottom. The rotation of material guide plate reciprocating, it is convenient for dispersing cement raw material, and cement raw material is slid down on the surface of material guide plate on left and right sides, can prolong the time of cement raw material heat, it is convenient for cement raw material to preheat fully, the cement raw material of falling is heated continuously, prolongs the heating time of cement raw material, it is convenient for cement raw material to preheat fully.

Description

Technical Field

[0001] This utility model relates to the field of cement kiln preheating technology, and more specifically, to a cement kiln raw material preheating device. Background Technology

[0002] Cement is a powdery hydraulic inorganic binder that forms a paste when mixed with water. It hardens in air or, even better, in water, and can firmly bind materials such as sand and gravel together. A cement production line is a series of equipment used to produce cement. It mainly consists of processes such as crushing and pre-homogenization, raw meal preparation and homogenization, preheating and decomposition, cement clinker calcination, and cement grinding and packaging. As an important binder, it is widely used in civil engineering, water conservancy, national defense and other projects.

[0003] Cement kilns are often used in cement processing. They are also known as cement rotary kilns or lime kilns. The high-temperature environment generated by the burners inside the kiln is used to calcine the cement raw materials. Before calcining the cement raw materials, they often need to be preheated to improve their stability.

[0004] In existing cement kiln preheating devices, when cement raw materials enter the preheating box for preheating, the cement raw materials fall too quickly and are not dispersed enough, resulting in clumps of cement raw materials. This leads to a short heating time for the cement raw materials, making it difficult for them to be fully preheated. Therefore, it is necessary to develop a cement kiln preheating device that can disperse cement raw materials and extend the preheating process. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a solution that overcomes or at least partially solves the above technical problems.

[0006] This utility model provides a cement kiln raw material preheating device, including a preheating box, a guide plate rotatably installed inside the preheating box, a driving and pushing mechanism installed at the bottom end of the guide plate, and a heating mechanism installed at the bottom end of the preheating box. The driving jacking mechanism includes a jacking rod that slides into the inner side of the preheating box for jacking the guide plate, a first connecting plate fixed to the outer end of the jacking rod, and a second connecting plate fixed to the middle of the outer side of the first connecting plate; The heating mechanism includes a heat-conducting frame fixedly installed at the bottom of the preheating box, a first heat-conducting pipe evenly and equidistantly fixed inside the heat-conducting frame, and hot air vents evenly opened at the top of the first heat-conducting pipe.

[0007] In a preferred embodiment, the preheating box is a rectangular structure and is vertically arranged, the guide plate is a rectangular plate structure and is inclined, and two adjacent guide plates are staggered vertically.

[0008] In a preferred embodiment, the top of the guide plate is hinged to a hinge shaft, which is rotatably mounted on both sides of the interior of the preheating box, and the inner end of the push rod slides against the middle of the bottom end of the guide plate.

[0009] In a preferred embodiment, guide holes are provided on both sides of the interior of the preheating box, the jacking rod slides horizontally through the guide holes, and the first connecting plate is vertically disposed on the outside of the preheating box.

[0010] In a preferred embodiment, the second connecting plate is horizontally arranged, and a third connecting plate is fixed to its outer end. The inner side of the third connecting plate is uniformly fixed with teeth. The two third connecting plates are aligned vertically, and the gap is set on the outside of the preheating box.

[0011] In a preferred embodiment, a gear is rotatably mounted on the outer center of the preheating box, and the gear is connected between the two third connecting plates through tooth meshing.

[0012] In a preferred embodiment, a limiting frame is fixed to the outside of the preheating box, the limiting frame is slidably engaged between the two third connecting plates, the gear is rotatably installed inside the limiting frame, and a motor is installed at its outer end, the motor is fixedly installed on the outside of the limiting frame.

[0013] In a preferred embodiment, the heat-conducting frame is a rectangular frame structure with a hollow cavity inside. The first heat-conducting pipe is horizontally arranged, with both ends connected to the heat-conducting frame. The hot air outlet is vertically upward. A second heat-conducting pipe is fixed to the middle of the outer side of the heat-conducting frame and slides through the side of the preheating box. A support plate is fixed to the bottom of the outer side of the preheating box. A blower is installed at the top of the support plate. One side of the blower is connected to an electric heating box containing heating wires through a conduit. The second heat-conducting pipe is connected to the electric heating box.

[0014] The targeted solution provided by this utility model has the following beneficial effects: 1. A guide plate is hinged inside the preheating box. The guide plate is pushed by a jacking rod, so the cement raw material is poured in from the top of the preheating box. At the same time, the motor drives the gear to rotate in both directions. The gear meshes with the teeth, which in turn drives the third connecting plate to move back and forth. This, in turn, drives the jacking rod to move in and out through the second and first connecting plates, thus pushing the guide plate at different angles. This makes the guide plate rotate in a cycle, which facilitates the dispersion of the cement raw material. The cement raw material slides downward on the surface of the guide plates on the left and right sides, which can prolong the heating time of the cement raw material and facilitate the full preheating of the cement raw material.

[0015] 2. The first heat-conducting pipe is evenly installed at the bottom of the preheating box through a heat-conducting frame, and hot air outlet holes are evenly opened at the top of the first heat-conducting pipe. Therefore, when the cement raw material enters the preheating box, the electric heating box is powered on and heats up. The blower blows air through the duct, so that the hot air enters the interior of the heat-conducting frame through the second heat-conducting pipe and is blown upward through the hot air outlet holes through the first heat-conducting pipe, thereby continuously heating the falling cement raw material, extending the heating time of the cement raw material, and facilitating the full preheating of the cement raw material. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is an overall perspective view provided by an embodiment of the present utility model; Figure 2 A cross-sectional structural schematic diagram provided for an embodiment of this utility model; Figure 3 A schematic diagram of the enlarged portion at point A provided for an embodiment of this utility model; Figure 4 A schematic diagram of the driving jacking mechanism provided for an embodiment of this utility model; Figure 5 A schematic diagram of the heating mechanism provided for an embodiment of this utility model.

[0018] In the diagram: 1. Preheating box; 2. Guide plate; 3. Push rod; 4. First connecting plate; 5. Second connecting plate; 6. Third connecting plate; 7. Limiting frame; 8. Motor; 9. Electric heating box; 10. Blower; 11. Support plate; 12. Guide hole; 13. Hinge shaft; 14. Tooth; 15. Gear; 16. Second heat conduction pipe; 17. Heat conduction frame; 18. First heat conduction pipe; 19. Hot air outlet. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Example Reference Figure 1-5 This utility model provides a technical solution: a cement kiln raw material preheating device, including a preheating box 1, a guide plate 2 rotatably installed inside the preheating box 1, a driving jacking mechanism installed at the bottom end of the guide plate 2, and a heating mechanism installed at the bottom end of the preheating box 1.

[0021] The driving jacking mechanism includes a jacking rod 3 that slides into the inner side of the preheating box 1 to jack the guide plate 2, a first connecting plate 4 fixed to the outer end of the jacking rod 3, and a second connecting plate 5 fixed to the middle of the outer side of the first connecting plate 4.

[0022] In a preferred embodiment, the preheating box 1 is a rectangular structure and is vertically arranged, the guide plate 2 is a rectangular plate structure and is inclined, and two adjacent guide plates 2 are staggered vertically.

[0023] In a preferred embodiment, the top of the guide plate 2 is hinged to a hinge shaft 13, which is rotatably mounted on both sides inside the preheating box 1, and the inner end of the push rod 3 slides against the middle of the bottom end of the guide plate 2.

[0024] In a preferred embodiment, guide holes 12 are provided on both sides of the interior of the preheating box 1, the push rod 3 slides horizontally through the guide holes 12, and the first connecting plate 4 is vertically arranged on the outside of the preheating box 1.

[0025] In a preferred embodiment, the second connecting plate 5 is horizontally arranged, and a third connecting plate 6 is fixed to its outer end. Teeth 14 are evenly fixed on the inner side of the third connecting plate 6. The two third connecting plates 6 are aligned vertically, and the gap is set on the outside of the preheating box 1.

[0026] In a preferred embodiment, a gear 15 is rotatably mounted on the outer center of the preheating box 1, and the gear 15 is connected between two third connecting plates 6 by meshing teeth 14.

[0027] In a preferred embodiment, a limiting frame 7 is fixed to the outside of the preheating box 1. The limiting frame 7 is slidably engaged between two third connecting plates 6. The gear 15 is rotatably installed inside the limiting frame 7, and a motor 8 is installed at its outer end. The motor 8 is fixedly installed on the outside of the limiting frame 7.

[0028] Cement raw materials are poured into the preheating box 1 from the top. At the same time, the motor 8 drives the gear 15 to rotate in both directions. The gear 15 meshes with the teeth 14, which in turn drives the third connecting plate 6 to move back and forth. This, in turn, drives the jacking rod 3 to move in and out through the second connecting plate 5 and the first connecting plate 4, thereby jacking the guide plate 2 at different angles. This causes the guide plate 2 to rotate in a cycle, which facilitates the dispersion of cement raw materials. The cement raw materials slide downward on the surface of the guide plates 2 on the left and right sides, which can prolong the heating time of the cement raw materials and facilitate the full preheating of the cement raw materials.

[0029] The heating mechanism includes a heat-conducting frame 17 fixedly installed at the bottom of the preheating box 1, a first heat-conducting pipe 18 evenly and equidistantly fixed inside the heat-conducting frame 17, and hot air outlet holes 19 evenly opened at the top of the first heat-conducting pipe 18.

[0030] In a preferred embodiment, the heat-conducting frame 17 is a rectangular frame structure with a hollow cavity inside. The first heat-conducting pipe 18 is horizontally arranged, with its two ends connected to the heat-conducting frame 17, and the hot air outlet 19 is vertically upward.

[0031] A second heat-conducting pipe 16 is fixed in the middle of the outer side of the heat-conducting frame 17 and slides through the side of the preheating box 1. A support plate 11 is fixed at the bottom of the outer side of the preheating box 1. A blower 10 is installed at the top of the support plate 11. An electric heating box 9 containing heating wires is connected to one side of the blower 10 through a conduit. The second heat-conducting pipe 16 is connected to the electric heating box 9.

[0032] When the cement raw materials enter the preheating box 1, the electric heating box 9 is powered on and heats up. The blower 10 blows air through the duct, so that the hot air enters the interior of the heat-conducting frame 17 through the second heat-conducting pipe 16, and is blown upward from the hot air outlet 19 through the first heat-conducting pipe 18, thereby continuously heating the falling cement raw materials, extending the heating time of the cement raw materials, and facilitating the full preheating of the cement raw materials.

[0033] In use, a guide plate 2 is hinged inside the preheating box 1, and the guide plate 2 is pushed by the jacking rod 3. Therefore, cement raw materials are poured into the preheating box 1 from the top. At the same time, the motor 8 drives the gear 15 to rotate in both directions. The gear 15 meshes with the teeth 14, which in turn drives the third connecting plate 6 to move back and forth. This, in turn, drives the jacking rod 3 to move in and out through the second connecting plate 5 and the first connecting plate 4, thus pushing the guide plate 2 at different angles. This makes the guide plate 2 rotate in a cycle, which facilitates the dispersion of cement raw materials. The cement raw materials slide downward on the surface of the guide plates 2 on the left and right sides, which can prolong the heating time of the cement raw materials and facilitate the full preheating of the cement raw materials.

[0034] The first heat-conducting pipe 18 is evenly installed at the bottom of the preheating box 1 through the heat-conducting frame 17, and hot air outlet holes 19 are evenly opened at the top of the first heat-conducting pipe 18. Therefore, when the cement raw material enters the preheating box 1, the electric heating box 9 is powered on and heats up. The blower 10 blows air through the duct, so that the hot air enters the interior of the heat-conducting frame 17 through the second heat-conducting pipe 16, and is blown upward through the hot air outlet holes 19 through the first heat-conducting pipe 18, thereby continuously heating the falling cement raw material, extending the heating time of the cement raw material, and facilitating the full preheating of the cement raw material.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A cement kiln raw material preheating device, comprising a preheating box (1), characterized in that: The preheating box (1) is rotatably mounted with a guide plate (2), and a driving jacking mechanism is mounted at the bottom of the guide plate (2). A heating mechanism is mounted at the bottom of the preheating box (1). The driving jacking mechanism includes a jacking rod (3) that slides into the inner side of the preheating box (1) for jacking the guide plate (2), a first connecting plate (4) fixed to the outer end of the jacking rod (3), and a second connecting plate (5) fixed to the middle of the outer side of the first connecting plate (4). The heating mechanism includes a heat-conducting frame (17) fixedly installed at the bottom of the preheating box (1), a first heat-conducting pipe (18) evenly and equidistantly fixed inside the heat-conducting frame (17), and hot air outlet holes (19) evenly opened at the top of the first heat-conducting pipe (18).

2. The cement kiln raw material preheating device according to claim 1, characterized in that: The preheating box (1) is a rectangular structure and is set vertically. The guide plate (2) is a rectangular plate structure and is set at an angle. The two adjacent guide plates (2) are staggered vertically.

3. The cement kiln raw material preheating device according to claim 1, characterized in that: The top of the guide plate (2) is hinged to a hinge shaft (13), which is rotatably installed on both sides inside the preheating box (1). The inner end of the push rod (3) slides against the middle of the bottom end of the guide plate (2).

4. The cement kiln raw material preheating device according to claim 1, characterized in that: The preheating box (1) has guide holes (12) on both sides inside. The jacking rod (3) slides horizontally through the guide holes (12). The first connecting plate (4) is vertically arranged on the outside of the preheating box (1).

5. A cement kiln raw material preheating device according to claim 1, characterized in that: The second connecting plate (5) is horizontally arranged, and a third connecting plate (6) is fixed at its outer end. Teeth (14) are evenly fixed on the inner side of the third connecting plate (6). The two third connecting plates (6) are aligned vertically and the gap is set on the outside of the preheating box (1).

6. A cement kiln raw material preheating device according to claim 5, characterized in that: A gear (15) is rotatably mounted on the outer middle of the preheating box (1), and the gear (15) is connected between the two third connecting plates (6) by meshing through the teeth (14).

7. A cement kiln raw material preheating device according to claim 6, characterized in that: A limiting frame (7) is fixed on the outside of the preheating box (1). The limiting frame (7) is slidably connected between the two third connecting plates (6). The gear (15) is rotatably installed inside the limiting frame (7). A motor (8) is installed on its outer end. The motor (8) is fixedly installed on the outside of the limiting frame (7).

8. A cement kiln raw material preheating device according to claim 1, characterized in that: The heat-conducting frame (17) is a rectangular frame structure with a hollow cavity inside. The first heat-conducting pipe (18) is horizontally arranged and its two ends are connected to the heat-conducting frame (17). The hot air outlet (19) is vertically upward. A second heat-conducting pipe (16) is fixed in the middle of the outer side of the heat-conducting frame (17) and slides through the side of the preheating box (1). A support plate (11) is fixed at the bottom of the outer side of the preheating box (1). A blower (10) is installed at the top of the support plate (11). An electric heating box (9) containing heating wires is connected to one side of the blower (10) through a conduit. The second heat-conducting pipe (16) is connected to the electric heating box (9).

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