Medium-speed mill tuyere ring

Abstract

The utility model provides a medium-speed mill tuyere ring which comprises a rotating tuyere ring, the rotating tuyere ring is rotatably connected to the inner wall of a mounting groove, a mounting frame is arranged at the top of the rotating tuyere ring, a rotating shaft is rotatably connected to the interior of the mounting frame, an air outlet pipe is arranged on one side of the rotating shaft, and an air inlet pipe is arranged on the other side of the rotating shaft. The outer wall of the air outlet pipe is in sliding connection with the protruding block and the groove. The rotary air nozzle is reasonable in design, the rotary air nozzle drives the air outlet pipe arranged at the top to rotate at the top of the guide ring through the rotary air nozzle ring capable of rotating, and the flat spiral spring drives the air outlet pipe to rotate and is in sliding connection with the convex block and the groove at the top of the guide ring, so that different angles of the air outlet pipe can be adjusted; and the pulverized coal in the medium-speed mill device at different positions can be blown.

Description

Technical Field

[0001] The utility model mainly relates to the field of medium-speed mills, and in particular to an air nozzle ring of a medium-speed mill. Background Art

[0002] Medium-speed coal mill refers to a coal mill with a working speed of 50-300r / min. It is a professional equipment for preparing and processing auxiliary materials for blast furnace ironmaking. Medium-speed coal mill can provide suitable coal powder for blast furnace ironmaking system. Medium-speed coal mill is the most important large-scale equipment in coal-to-oil pulverizing system. Its operation safety and economy are extremely important to the normal operation of coal-to-oil.

[0003] As the grinding disc rotates, the material moves to the edge of the grinding disc under the action of centrifugal force, and is crushed by the grinding roller when passing through the annular groove on the grinding disc. The crushed material is carried away by the high-speed airflow blown out by the nozzle ring at the edge of the grinding disc tile, and the large particles fall directly onto the grinding disc for re-grinding.

[0004] The inventor discovered the following defects during the operation of the specific embodiment:

[0005] The air outlet of the air nozzle ring is fixedly arranged on the outer wall of the grinding disc tile, so that the direction of the high-speed airflow blown out by the air nozzle ring is fixed, resulting in the air nozzle ring being unable to blow the coal powder at different positions.

[0006] It should be noted that the above contents belong to the technical cognition scope of the inventor. Since the technical contents in this field are vast and too complicated, the above contents of this application do not necessarily constitute prior art. Utility Model Content

[0007] 1. Technical problems to be solved by the utility model:

[0008] The utility model provides a medium-speed grinding nozzle ring to solve the technical problems existing in the above-mentioned background technology.

[0009] 2. Technical solution:

[0010] To achieve the above object, the technical solution provided by the utility model is: a medium-speed grinding air nozzle ring, comprising a grinding disc tile, a guide ring is arranged on the top of the grinding disc tile, a convex block is arranged on the top of the guide ring, a groove is opened on the top of the guide ring, and a mounting groove is opened on the outer wall of the grinding disc tile;

[0011] A rotating air nozzle ring is rotatably connected to the inner wall of the mounting groove, a mounting bracket is arranged on the top of the rotating air nozzle ring, a rotating shaft is rotatably connected inside the mounting bracket, an air outlet pipe is arranged on one side of the rotating shaft, and an outer wall of the air outlet pipe is slidably connected to the protrusion and the groove.

[0012] Furthermore, the number of the bumps and grooves is set to be multiple, and the multiple bumps and grooves are arranged in an annular array on the top of the guide ring, and the bumps and grooves are arranged in an alternating manner.

[0013] Furthermore, a gear ring is disposed on the outer wall of the rotating nozzle ring, a servo motor is disposed on the outer wall of the grinding wheel tile, a driving gear is disposed at the output end of the servo motor, and the driving gear and the gear ring are meshed with each other.

[0014] Furthermore, an air inlet groove is provided inside the rotating air nozzle ring, and an auxiliary groove is provided at the bottom of the rotating air nozzle ring, and the auxiliary groove is connected to the air inlet groove.

[0015] Furthermore, planar scroll springs are provided at both ends of the rotating shaft, one end of the planar scroll spring is connected to the mounting frame, a connecting tube is provided at the bottom of the rotating shaft, one end of the connecting tube is connected to the air outlet pipe, and the other end of the connecting tube is connected to the air inlet groove.

[0016] Furthermore, a mounting ring is rotatably connected to the inner wall of the auxiliary groove, and an air intake duct is arranged at the bottom of the mounting ring.

[0017] 3. Beneficial effects:

[0018] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0019] The utility model provides a rotating tuyere ring that can rotate, so that the rotating tuyere ring drives the air outlet pipe arranged on the top to rotate on the top of the guide ring, and the plane scroll spring drives the air outlet pipe to rotate and is slidably connected with the convex block and the groove on the top of the guide ring, so that different angles of the air outlet pipe can be adjusted, and the coal powder in the medium-speed grinding device at different positions can be blown;

[0020] During the rotation of the nozzle ring, the mounting ring at the bottom is relatively still, and the air pump pumps the heated gas into the air inlet slot through the air inlet pipe. Then the air enters the air outlet pipe along the connecting pipe and blows the hot air out through the air outlet pipe, so that the hot air contacts the coal powder and dries the coal powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the grinding disc tile of the utility model;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating air nozzle ring of the utility model.

[0025] Reference numerals:

[0026] 1. Grinding disc tile; 2. Guide ring; 3. Bump; 4. Groove; 5. Mounting slot; 6. Rotating nozzle ring; 7. Gear ring; 8. Mounting frame; 9. Rotating shaft; 10. Plane scroll spring; 11. Connecting pipe; 12. Air outlet pipe; 13. Air inlet slot; 14. Auxiliary slot; 15. Servo motor; 16. Driving gear; 17. Mounting ring; 18. Air inlet duct. DETAILED DESCRIPTION

[0027] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0031] See attached Figure 1-4 A medium-speed grinding air nozzle ring comprises a grinding disc tile 1, a guide ring 2 is arranged on the top of the grinding disc tile 1, a convex block 3 is arranged on the top of the guide ring 2, a groove 4 is opened on the top of the guide ring 2, and a mounting groove 5 is opened on the outer wall of the grinding disc tile 1;

[0032] The rotating air nozzle ring 6 is rotatably connected to the inner wall of the mounting groove 5, a mounting bracket 8 is arranged on the top of the rotating air nozzle ring 6, a rotating shaft 9 is rotatably connected to the inside of the mounting bracket 8, an air outlet pipe 12 is arranged on one side of the rotating shaft 9, and an outer wall of the air outlet pipe 12 is slidably connected to the protrusion 3 and the groove 4.

[0033] Furthermore, in the above technical scheme, the number of the protrusions 3 and the grooves 4 is set to be multiple, and the multiple protrusions 3 and the grooves 4 are arranged in a ring array on the top of the guide ring 2, the protrusions 3 and the grooves 4 are arranged alternately, and planar volute springs 10 are arranged at both ends of the rotating shaft 9, one end of the planar volute spring 10 is connected to the mounting frame 8, and a connecting pipe 11 is arranged at the bottom of the rotating shaft 9, one end of the connecting pipe 11 is connected to the air outlet pipe 12, and the other end of the connecting pipe 11 is connected to the air inlet groove 13, the protrusions 3 and the grooves 4 are slidably connected to the air outlet pipe 12, and the air outlet pipes 12 are arranged alternately, when one air outlet pipe 12 contacts the protrusion 3, the air outlet pipe 12 adjacent to the air outlet pipe 12 contacts the groove 4, and when the air outlet pipe 12 rotates downward, an electromagnetic valve is arranged inside the air outlet pipe 12, and the electromagnetic valve closes the air outlet pipe 12 to prevent the downward rotating air outlet pipe 12 from blowing the coal powder downward.

[0034] Furthermore, in the above technical solution, a gear ring 7 is provided on the outer wall of the rotating wind nozzle ring 6, a servo motor 15 is provided on the outer wall of the grinding wheel tile 1, and a driving gear 16 is provided on the output end of the servo motor 15. The driving gear 16 is meshed with the gear ring 7. The servo motor 15 is started, and the servo motor 15 drives the driving gear 16 to rotate. The driving gear 16 drives the rotating wind nozzle ring 6 to rotate on the inner wall of the mounting groove 5 through the gear ring 7, thereby realizing the rotation of the mounting groove 5.

[0035] Furthermore, in the above technical solution, an air inlet groove 13 is opened inside the rotating air nozzle ring 6, and an auxiliary groove 14 is opened at the bottom of the rotating air nozzle ring 6. The auxiliary groove 14 is connected to the air inlet groove 13, and the inner wall of the auxiliary groove 14 is rotatably connected to a mounting ring 17, and an air intake duct 18 is arranged at the bottom of the mounting ring 17.

[0036] In this embodiment, when the coal powder needs to be ground by the medium-speed mill, when the millstone 1 is rotating, the material moves to the edge of the millstone under the action of centrifugal force, and is crushed by the grinding roller when passing through the annular groove on the millstone. At the same time, the servo motor 15 is started, and the servo motor 15 drives the driving gear 16 to rotate. The driving gear 16 drives the rotating nozzle ring 6 to rotate in the opposite direction through the gear ring 7, and then the rotating nozzle ring 6 drives the top servo motor 15 to slide on the top of the convex block 3 and the groove 4 on the top of the guide ring 2, so that the plane scroll spring 10 drives the rotating shaft 9 to rotate. The rotating shaft 9 drives the air outlet pipe 12 to rotate. When the air outlet pipe 12 contacts the groove 4, the air outlet pipe 12 rotates downward, and the solenoid valve inside the air outlet pipe 12 closes the air outlet pipe 12. When the air outlet pipe 12 contacts the protrusion 3, the air outlet pipe 12 rotates upward, and the solenoid valve inside the air outlet pipe 12 opens so that the heated gas can be discharged through the air outlet pipe 12. The air pump is started, and the air pump introduces the heated gas into the interior of the air inlet pipe 18 and into the interior of the air inlet slot 13. Then the gas is discharged from the interior of the air outlet pipe 12 along the flat scroll spring 10.

[0037] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A medium speed grinding nozzle ring, characterized in that: include: A grinding disc tile (1), wherein a guide ring (2) is arranged on the top of the grinding disc tile (1), a convex block (3) is arranged on the top of the guide ring (2), a groove (4) is provided on the top of the guide ring (2), and a mounting groove (5) is provided on the outer wall of the grinding disc tile (1); A rotating air nozzle ring (6) is rotatably connected to the inner wall of the mounting groove (5); a mounting frame (8) is provided on the top of the rotating air nozzle ring (6); a rotating shaft (9) is rotatably connected inside the mounting frame (8); an air outlet pipe (12) is provided on one side of the rotating shaft (9); and an outer wall of the air outlet pipe (12) is slidably connected to the protrusion (3) and the groove (4).

2. The medium speed grinding nozzle ring according to claim 1, characterized in that: The number of the protrusions (3) and the grooves (4) is set to be multiple, and the multiple protrusions (3) and the grooves (4) are arranged in a ring array on the top of the guide ring (2), and the protrusions (3) and the grooves (4) are arranged in a staggered manner.

3. The medium speed grinding nozzle ring according to claim 1, characterized in that: The outer wall of the rotating nozzle ring (6) is provided with a toothed ring (7), the outer wall of the grinding wheel tile (1) is provided with a servo motor (15), the output end of the servo motor (15) is provided with a driving gear (16), and the driving gear (16) and the toothed ring (7) are meshed with each other.

4. The medium speed grinding nozzle ring according to claim 1, characterized in that: An air inlet groove (13) is provided inside the rotating air nozzle ring (6), and an auxiliary groove (14) is provided at the bottom of the rotating air nozzle ring (6), wherein the auxiliary groove (14) is in communication with the air inlet groove (13).

5. The medium speed grinding nozzle ring according to claim 1, characterized in that: Planar scroll springs (10) are provided at both ends of the rotating shaft (9), one end of the planar scroll spring (10) is connected to the mounting frame (8), a connecting pipe (11) is provided at the bottom of the rotating shaft (9), one end of the connecting pipe (11) is connected to the air outlet pipe (12), and the other end of the connecting pipe (11) is connected to the air inlet groove (13).

6. The medium speed grinding nozzle ring according to claim 4, characterized in that: The inner wall of the auxiliary groove (14) is rotatably connected to a mounting ring (17), and an air intake duct (18) is provided at the bottom of the mounting ring (17).

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