Grinding head feeding device of cement grinding mill

Abstract

The utility model discloses a feeding device for a grinding head of a cement grinding mill. The feeding device comprises a stock bin, a material dryer is arranged at the bottom of the stock bin, a material conveyor is arranged at the bottom of the material dryer, a discharging pipe is arranged at the bottom of the material conveyor, the discharging pipe is communicated with the grinding head, and the grinding head is communicated with the cement grinding mill. The utility model relates to the technical field of cement production, in particular to a feeding device of a grinding head of a cement grinding mill, which can dry materials by arranging a material dryer to remove excessive moisture in the materials so as to prevent the problem of adhesion of the materials due to excessive moisture, and further can push the materials to be output quickly by arranging a spiral conveying shaft, so that the production efficiency of the cement grinding mill is improved. The effective link blockage problem is solved; furthermore, by arranging a secondary air inducing pipe, hot air from the tail of a cement kiln in a cement system is conveyed to the discharging pipe, on one hand, the materials can be further dried, on the other hand, under pushing of the hot air, the materials adsorbed on the inner wall of the discharging pipe are blown away, and the materials can rapidly enter the mill.

Description

Technical Field

[0001] The utility model relates to the technical field of cement production, in particular to a feeding device for the grinding head of a cement mill. Background Art

[0002] At present, when various materials in a cement production line enter a mill through a feeding pipe for grinding, materials with a relatively high water content are likely to accumulate at the grinding head. After reaching a certain height, they will block the subsequent materials from entering the mill, and ultimately cause blockage of the grinding head of the cement mill, affecting the production and processing efficiency of cement.

[0003] Therefore, it is necessary to provide a feeding device for the grinding head of a cement mill to solve the above technical problems. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a feeding device for the grinding head of a cement mill, which solves the problem that the existing grinding head of a cement mill is prone to material blockage.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solution: A feeding device for the grinding head of a cement mill includes a silo. A material dryer is arranged at the bottom of the silo. A material conveyor is arranged at the bottom of the material dryer. A feeding pipe is arranged at the bottom of the material conveyor. The feeding pipe is communicated with the grinding head, and the grinding head is communicated with the cement mill.

[0008] As a further preference, the material dryer includes a feeding port and a discharging port. A first switching valve is arranged on the feeding port, and a second switching valve is arranged on the discharging port;

[0009] A rotatable stirring shaft is installed in the material dryer. A cover body is installed on the side wall of the material dryer. A screen is arranged at the communicating place between the cover body and the material dryer. A heating pipe is arranged in the cover body, and a blower is arranged outside the cover body.

[0010] As a further preference, the material conveyor includes a conveying pipeline. A rotatable spiral conveying shaft is installed in the conveying pipeline, and the spiral conveying shaft is driven by an external motor.

[0011] As a further preference, a vibration motor is arranged on the outer wall of the conveying pipeline.

[0012] As a further preference, a secondary air draft pipe is arranged at a position of the feeding pipe close to the grinding head, and a third switching valve is arranged on the secondary air draft pipe.

[0013] (3) Beneficial Effects

[0014] The present utility model provides a feeding device for the grinding head of a cement mill. It has the following beneficial effects:

[0015] For this feeding device of the cement mill grinding head, by setting a material dryer, the material can be dried to remove the excess moisture in the material, thereby preventing the problem of adhesion caused by excessive moisture in the material. Further, by setting a spiral conveyor shaft, the material can be quickly pushed out, effectively alleviating the blockage problem; furthermore, by setting a secondary air duct, the hot air from the tail of the cement kiln in the cement system is conveyed to the feeding pipe. On the one hand, it can further dry the material, and on the other hand, under the push of the hot air, the material adsorbed on the inner wall of the feeding pipe is dispersed, and the material can quickly enter the mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the present utility model.

[0017] In the figure: 1, storage bin; 2, material dryer; 21, feeding port; 22, discharging port; 23, first switching valve; 24, second switching valve; 25, stirring shaft; 26, housing; 27, screen; 28, heating tube; 29, fan; 3, material conveyor; 31, conveying pipeline; 32, spiral conveyor shaft; 33, motor; 34, vibration motor; 4, feeding pipe; 5, grinding head; 6, cement mill; 7, secondary air duct; 8, third switching valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0019] As Figure 1 shown, the present utility model provides a technical solution: a feeding device for the grinding head of a cement mill, including a storage bin 1, a material dryer 2 is arranged at the bottom of the storage bin 1, a material conveyor 3 is arranged at the bottom of the material dryer 2, a feeding pipe 4 is arranged at the bottom of the material conveyor 3, the feeding pipe 4 is communicated with the grinding head 5, and the grinding head 5 is communicated with the cement mill 6.

[0020] The material dryer 2 includes a feeding port 21 and a discharging port 22. A first switching valve 23 is arranged on the feeding port 21 (for controlling the material to enter the material dryer 2 from the storage bin 1), and a second switching valve 24 is arranged on the discharging port 22 (for controlling the material to enter the conveying pipeline 31 from the material dryer 2).

[0021] A rotatable stirring shaft 25 is installed inside the material dryer 2. The stirring shaft 25 enables the material to be in uniform contact with the hot air flow. A cover 26 is installed on the side wall of the material dryer 2. A screen 27 is provided at the connection between the cover 26 and the material dryer 2 to prevent the material from entering the cover 26. A heating tube 28 is arranged inside the cover 26, and a blower 29 is arranged outside the cover 26.

[0022] The material conveyor 3 includes a conveying pipeline 31. A vibration motor 34 is arranged on the outer wall of the conveying pipeline 31. The purpose of setting the vibration motor 34 is to vibrate the conveying pipeline 31 to prevent the material from adhering to its inner wall. A rotatable screw conveyor shaft 32 is installed inside the conveying pipeline 31, and the screw conveyor shaft 32 is driven by an external motor 33.

[0023] A secondary air intake pipe 7 is arranged at a position of the blanking pipe 4 close to the grinding head 5. The secondary air intake pipe 7 mainly introduces the hot air from the kiln tail into the blanking pipe 4. Of course, hot air can also be introduced from other places. A third on-off valve 8 is arranged on the secondary air intake pipe 7.

[0024] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0025] During use, open the first on-off valve 23, and the material in the storage bin 1 enters the material dryer 2 through the feed inlet 21. The stirring shaft 25 is driven to rotate by an external motor to stir the material. At the same time, turn on the blower 29 and the heating tube 28 to blow out the air flow. After being heated by the heating tube 28, the air flow enters the material dryer 2 and comes into full contact with the material, thereby drying the moisture therein.

[0026] Open the second on-off valve 24, and the material enters the conveying pipeline 31 through the discharge outlet 22. Turn on the motor 33 to drive the screw conveyor shaft 32 to rotate, so that the material is quickly transported from the conveying pipeline 31 to the blanking pipe 4. Open the third on-off valve 8 to introduce the hot air of the cement kiln. The hot air quickly comes into contact with the material in the blanking pipe 4 to thoroughly dry the residual moisture in the material. At the same time, under the pushing action of the hot air flow, the material in the blanking pipe 4 can be quickly pushed into the grinding head 5 and then enter the cement mill 6 for grinding.

[0027] In summary, for the feed device at the mill head of the cement mill, by setting a material dryer, the material can be dried to remove excess moisture in the material, thereby preventing the problem of adhesion caused by excessive moisture in the material. Further, by setting a spiral conveyor shaft, the material can be quickly pushed out, effectively solving the blockage problem; furthermore, by setting a secondary air duct, the hot air from the tail of the cement kiln in the cement system is conveyed to the feeding pipe. On the one hand, the material can be further dried, and on the other hand, under the push of the hot air, the material adsorbed on the inner wall of the feeding pipe is blown away, and the material can quickly enter the mill.

[0028] It should be noted that the electrical components mentioned in this article are all electrically connected to an external main controller and 220V or 380V mains power. And the main controller can be a conventional known device such as a computer that plays a control role. Its control principle, internal structure, and control switch method are all conventional means of the existing technology and are directly cited here without further elaboration. In this article, relational terms such as first and second are only used 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A feeding device for the grinding head of a cement mill, characterized in that: It includes a silo (1). A material dryer (2) is arranged at the bottom of the silo (1). A material conveyor (3) is arranged at the bottom of the material dryer (2). A discharge pipe (4) is arranged at the bottom of the material conveyor (3). The discharge pipe (4) is communicated with a grinding head (5), and the grinding head (5) is communicated with a cement mill (6). The material dryer (2) includes a feed inlet (21) and a discharge outlet (22). A first switching valve (23) is arranged on the feed inlet (21), and a second switching valve (24) is arranged on the discharge outlet (22). A rotatable stirring shaft (25) is installed in the material dryer (2). A cover body (26) is installed on the side wall of the material dryer (2). A screen (27) is arranged at the communicating place between the cover body (26) and the material dryer (2). A heating pipe (28) is arranged in the cover body (26), and a blower (29) is arranged outside the cover body (26).

2. The feeding device for the grinding head of a cement mill according to claim 1, characterized in that: The material conveyor (3) includes a conveying pipe (31). A rotatable spiral conveyor shaft (32) is installed in the conveying pipe (31), and the spiral conveyor shaft (32) is driven by an external motor (33).

3. The feeding device for the grinding head of a cement mill according to claim 2, wherein: A vibration motor (34) is arranged on the outer wall of the conveying pipe (31).

4. The feeding device for the grinding head of a cement mill according to claim 1, characterized in that: A secondary air duct (7) is arranged at a position of the discharge pipe (4) close to the grinding head (5), and a third switching valve (8) is arranged on the secondary air duct (7).

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