Hot air feeding device of raw mill

Abstract

The utility model provides a hot air feeding device of a raw material mill, and relates to the technical field of air inlet and feeding of the raw material mill, the hot air feeding device comprises a communicating pipeline, a blanking hopper is arranged above the communicating pipeline in a communicating manner, the side wall of the communicating pipeline communicates with a hot air pipeline, the communicating pipeline is provided with an extrusion assembly and a pressurization assembly, and the extrusion assembly is rotatably arranged in the middle of the communicating pipeline; the pressurizing assembly is arranged at the top of the communicating pipeline, raw materials can be effectively accelerated to quickly enter the raw material mill in the communicating pipeline through the extrusion assembly and the pressurizing assembly, the raw materials are prevented from being blocked in the communicating pipeline, and meanwhile the pressurizing assembly can effectively increase the flow speed of hot air in the communicating pipeline; and hot air can effectively take away fine powder and dust in the communicating pipeline, and stable circulation in the pipeline is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of air inlet and feed of raw material mills, and more specifically, to a hot air feed device for raw material mills. Background Art

[0002] The raw material mill is one of the key equipment in the cement production process, used to grind cement clinker (also known as clinker) into the required powdered cement products. Clinker is the product after calcining raw materials such as calcined limestone and clay at high temperatures. Its particles are relatively large and need to be ground to become the finished cement product.

[0003] During the use of the raw material mill, the clinker is ground into the required fine powder. At the same time, the internal part of the raw material mill will control the temperature through a hot air system and take away the dust and heat generated during the grinding process to maintain the stability of the internal environment of the mill and the operation efficiency.

[0004] Normally, hot air is discharged together from the feed end, effectively taking away the fine powder generated inside the mill and the dust carried by the hot air, ensuring that the internal environment of the mill is relatively clean, and transporting these materials to the separator or collector for processing. However, currently, due to the easy blockage at the feed end, it is easy to cause the hot air to be unable to take away the raw materials in time, resulting in the inability to remove the raw material dust near the grinding port, where it accumulates, forming blockages or reducing the equipment efficiency. Summary of the Invention

[0005] The purpose of the embodiments of this application is to provide a hot air feed device for a raw material mill, which can solve the technical problem of blockage at the hot air feed port of the raw material mill.

[0006] The embodiments of this application provide a hot air feed device for a raw material mill, including a connecting pipe. A blanking hopper is connected and arranged above the connecting pipe. A hot air pipe is connected to the side wall of the connecting pipe. An extrusion assembly and a pressurization assembly are arranged on the connecting pipe. The extrusion assembly is rotatably arranged in the middle of the connecting pipe, and the pressurization assembly is arranged on the top of the connecting pipe.

[0007] Further, the extrusion assembly includes a spiral extrusion blade, a rotating shaft, and a driving motor. The driving motor is fixedly arranged on the outer wall of the connecting pipe. The rotating shaft is rotatably arranged in the connecting pipe. The driving motor drives the rotating shaft to rotate. The spiral extrusion blade is fixedly arranged on the rotating shaft.

[0008] Further, a scraper is also fixedly arranged at the edge of the spiral extrusion blade.

[0009] Further, the pressurization assembly includes a plurality of pressurization blowers. The plurality of pressurization blowers are equidistantly arranged on the connecting pipe, and the air outlet direction of the pressurization blower is inclined.

[0010] Furthermore, air guide plates are provided at the air outlet ends of the hot air ducts and the air outlet ends of the booster fans.

[0011] Furthermore, a plurality of partition plates are also provided at the hopper, and the plurality of partition plates are equidistantly arranged in the hopper.

[0012] Furthermore, the plurality of partition plates are rotatably arranged in the hopper. One end of the partition plate penetrates through the outer wall of the hopper, and a rotating plate is connected to one end of the partition plate. A driving assembly is arranged at the lower end of the rotating plate. The driving assembly includes a moving rod, a limiting sleeve, a connecting rod, a turntable and a servo motor. The lower end of the rotating plate is slidably connected to the moving rod. One end of the connecting rod is connected to the moving rod, and the other end of the connecting rod is connected to the turntable. The servo motor drives the turntable to rotate. The servo motor is fixedly arranged on the side wall of the hopper. The limiting sleeve is sleeved on both sides of the moving rod, and the limiting sleeve is fixedly arranged on the side wall of the hopper.

[0013] Furthermore, the air outlet end of the hot air duct is inclined.

[0014] Advantages of the present utility model:

[0015] The extrusion assembly and the boosting assembly provided by the present utility model can effectively accelerate the entry of raw materials into the raw material mill in the connecting pipe, avoid blockage of the raw materials in the connecting pipe, and at the same time, the boosting assembly can effectively increase the hot air flow velocity in the connecting pipe, ensure that the hot air can effectively carry away the fine powder and dust in the connecting pipe, and ensure the stable flow in the pipe.

[0016] Through the arrangement of the partition plates, the raw materials falling from the hopper to the connecting pipe can be evenly fed, reducing the transmission load in the connecting pipe. Description of the drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0019] Figure 2 It is a schematic cross-sectional structural diagram of an embodiment of the present utility model;

[0020] Figure 3Structural schematic diagram of the partition board in an embodiment of the present utility model;

[0021] Figure 4 Structural schematic diagram of the extrusion assembly in an embodiment of the present utility model.

[0022] The reference numerals are respectively:

[0023] 1, connecting pipe; 2, blanking hopper; 21, partition board; 22, rotating plate; 23, driving assembly; 231, moving rod; 232, limiting sleeve; 233, connecting rod; 234, turntable; 235, servo motor; 3, hot air pipe; 4, extrusion assembly; 41, spiral extrusion blade; 42, rotating shaft; 43, driving motor; 44, scraper; 5, pressurizing assembly; 51, pressurizing fan; 52, air guiding plate. Detailed implementation manners

[0024] 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. Apparently, 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 illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0025] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0026] 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.

[0027] 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 accompanying 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not 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.

[0028] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not mean that the components are required 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.

[0029] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "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 situations.

[0030] The embodiment of the present application discloses a hot air feeding device for a raw material mill.

[0031] Refer to Figures 1-4 , a hot air feeding device for a raw material mill, including a connecting pipe 1. A feeding hopper 2 is connected and arranged above the connecting pipe 1. A hot air pipe 3 is connected to the side wall of the connecting pipe 1. An extrusion assembly 4 and a pressurization assembly 5 are arranged on the connecting pipe 1. The extrusion assembly 4 is rotatably arranged in the middle of the connecting pipe 1, and the pressurization assembly 5 is arranged on the top of the connecting pipe 1;

[0032] During use, the raw materials are poured from the feeding hopper 2 and fall into the connecting pipe 1. The hot air pipe 3 conveys hot air into the connecting pipe 1. Through the extrusion assembly 4 and the pressurization assembly 5, the raw materials can be effectively accelerated into the raw material mill in the connecting pipe 1, avoiding blockage of the raw materials in the connecting pipe 1. At the same time, the pressurization assembly 5 can effectively increase the hot air flow rate in the connecting pipe 1, ensuring that the hot air can effectively carry away the fine powder and dust in the connecting pipe 1 and ensuring the stable flow in the pipe.

[0033] Refer to Figure 2 , Figure 4 , the extrusion assembly 4 includes a spiral extrusion blade 41, a rotating shaft 42, and a driving motor 43. The driving motor 43 is fixedly arranged on the outer wall of the connecting pipe 1. The rotating shaft 42 is rotatably arranged in the connecting pipe 1. The driving motor 43 drives the rotating shaft 42 to rotate, and the spiral extrusion blade 41 is fixedly arranged on the rotating shaft 42;

[0034] During use, the driving motor 43 drives the rotating shaft 42 to rotate, driving the spiral extrusion blade 41 to rotate in the connecting pipe 1, which can effectively drive the raw materials to be accelerated and conveyed into the mill, preventing the occurrence of blockage of the raw materials in the connecting pipe 1.

[0035] Refer to Figure 4, More specifically, a scraper 44 is fixedly arranged at the edge of the spiral extrusion blade 41, which can better clean the inner wall of the connecting pipe 1 with raw materials, preventing the raw materials from adhering to the inner wall of the connecting pipe 1.

[0036] Refer to Figures 1-2 , The pressurizing assembly 5 includes a plurality of pressurizing fans 51. The plurality of pressurizing fans 51 are equidistantly arranged on the connecting pipe 1, and the air outlet direction of the pressurizing fan 51 is inclined. When in use, the arrangement of the pressurizing fan 51 can effectively increase the air pressure in the connecting pipe 1, improve the efficiency of the hot air to carry away the dust particles, and at the same time accelerate the flow of the raw materials in the connecting pipe 1.

[0037] Refer to Figure 2 , Air guide plates 52 are arranged at the air outlet ends of the hot air pipe 3 and the air outlet ends of the pressurizing fans 51, which can effectively prevent the dust particles from blocking the air outlet ends and affecting the air outlet efficiency.

[0038] Refer to Figure 3 , A plurality of partition plates 21 are also arranged at the blanking hopper 2. The plurality of partition plates 21 are equidistantly arranged in the blanking hopper 2;

[0039] More specifically, the plurality of partition plates 21 are rotatably arranged in the blanking hopper 2. One end of the partition plate 21 penetrates through the outer wall of the blanking hopper 2, and a rotating plate 22 is connected to one end of the partition plate 21. A waist-shaped groove is arranged on the rotating plate 22, and a driving assembly 23 is arranged at the lower end of the rotating plate 22. The driving assembly 23 includes a moving rod 231, a limiting sleeve 232, a connecting rod 233, a turntable 234 and a servo motor 235. The lower end of the rotating plate 22 is slidably connected to the moving rod 231. A fixed column is arranged on the surface of the moving rod 231. When the moving rod 231 moves, the fixed column can slide in the waist-shaped groove. One end of the connecting rod 233 is connected to the moving rod 231, and the other end of the connecting rod 233 is connected to the turntable 234. The servo motor 235 drives the turntable 234 to rotate. The servo motor 235 is fixedly arranged on the side wall of the blanking hopper 2. The limiting sleeve 232 is sleeved on both sides of the moving rod 231, and the limiting sleeve 232 is fixedly arranged on the side wall of the blanking hopper 2;

[0040] When in use, the servo motor 235 drives the turntable 234 to rotate, drives the connecting rod 233 to move. The movement of the connecting rod 233 drives the moving rod 231 to move left and right in the limiting sleeve 232, and at the same time drives the rotating rod to rotate at an angle, effectively driving the partition plate 21 to reciprocate left and right in the blanking hopper 2, so that the blanking can evenly fall into the connecting pipe 1, reducing the blockage problem of the connecting pipe 1.

[0041] Refer to Figure 2 , The air outlet end of the hot air pipe 3 is inclined, which effectively accelerates the transmission of the hot air to the raw materials and prevents the air pressure of the hot air from causing the raw materials to splash back.

[0042] 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 hot air feeding device for a raw mill, characterized in that: It includes a connecting pipe, a dropping hopper is arranged above the connecting pipe, a hot air pipe is connected to the side wall of the connecting pipe, an extrusion component and a boosting component are arranged on the connecting pipe, the extrusion component is rotatably arranged in the middle of the connecting pipe, and the boosting component is arranged on the top of the connecting pipe.

2. A hot air feeding device for a raw mill according to claim 1, characterized in that: The extrusion assembly includes a spiral extrusion blade, a rotating shaft and a driving motor. The driving motor is fixedly arranged on the outer wall of the connecting pipe. The rotating shaft is rotatably arranged in the connecting pipe. The driving motor drives the rotating shaft to rotate. The spiral extrusion blade is fixedly arranged on the rotating shaft.

3. A hot air feeding device for a raw mill according to claim 2, characterized in that: A scraper is also fixedly arranged at the edge of the spiral extrusion blade.

4. The hot air feeding device for a raw mill according to claim 1, characterized in that: The boosting assembly includes a plurality of boosting fans, which are equidistantly arranged on the connecting pipe, and the air outlet directions of the boosting fans are inclined.

5. A hot air feeding device for a raw mill according to claim 4, characterized in that: The air outlet end of the hot air duct and the air outlet end of the booster fan are both provided with air guide plates.

6. The hot air feeding device for raw mill according to claim 1, characterized in that: A plurality of partition plates are also arranged at the drop hopper, and the plurality of partition plates are arranged in the drop hopper at equal intervals.

7. A hot air feeding device for a raw mill according to claim 6, characterized in that: A plurality of partition plates are rotatably arranged in the drop hopper, one end of the partition plate passes through the outer wall of the drop hopper, and one end of the partition plate is connected to a rotating plate, a driving assembly is arranged at the lower end of the rotating plate, the driving assembly includes a moving rod, a limit sleeve, a connecting rod, a turntable and a servo motor, the lower end of the rotating plate is slidably connected to the moving rod, one end of the connecting rod is connected to the moving rod, and the other end of the connecting rod is connected to the turntable, the servo motor drives the turntable to rotate, the servo motor is fixedly arranged on the side wall of the drop hopper, the limit sleeve is arranged on both sides of the moving rod, and the limit sleeve is fixedly arranged on the side wall of the drop hopper.

8. The hot air feeding device for raw mill according to claim 1, characterized in that: The air outlet end of the hot air duct is arranged obliquely.

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