Rotary kiln radial sealing device

Abstract

The utility model discloses a rotary kiln radial sealing device which comprises a static device and a cylinder body rotationally connected to a port of the static device, a sleeve is connected to the outer wall of the cylinder body in a sleeved mode, a material collecting cylinder is fixedly connected to the static device, a sealing assembly is arranged on the material collecting cylinder, and the sealing assembly is connected with the sleeve in a sleeved mode. The outer wall of one side of the sealing assembly is movably connected with the sleeve. The steel wire rope is always kept in a tightened state through the balancing weights arranged on the two sides of the sleeve, the sealing assembly is kept to be tightly attached to the outer wall of the sleeve, sealing is achieved, the sealing assembly can swing when the sleeve body swings, and the better sealing effect is achieved. A cooling plate is arranged on the material collecting barrel, and an air inlet and an air outlet penetrate through the outer wall of the material collecting barrel, so that cold air cools heat generated by friction of the sealing assembly through the cooling plate, and the service life of the sealing assembly is prolonged; and the sealing plate or other parts can be independently replaced by dismounting the pressing plate, so that the waste can be reduced while the maintenance is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field, and particularly relates to a radial sealing device for a rotary kiln. Background Art

[0002] A rotary kiln is a thermal process equipment used to heat powdered or slurry materials. It is equipped with a burner that provides a high-temperature heat source for the rotary kiln. Rotary kilns are widely used in industries such as metallurgy, refractory materials, cement, chemicals, and papermaking.

[0003] Since the rotary kiln is a rotating device, it is generally connected to a stationary device at both ends. In order to ensure the normal operation of the equipment, a sealing device needs to be added. The existing sealing device mainly uses flexible fish scales for sealing. The stainless steel sheet can swing with the swing of the rotary equipment and has good swing absorption ability. However, since there is no lubricant between the stainless steel sheet and the sleeve, direct contact wear occurs, causing the stainless steel sheet to wear quickly and the sleeve to have a short service life. In flexible graphite seals, although the graphite block has a lubricating function and can effectively reduce the wear rate and increase the service life, the seal has relatively high requirements for the roughness of the sleeve. If it is not handled properly during installation, leaving burrs and rust and other problems, the wear rate will increase significantly, which will seriously shorten the service life. In addition, the sealing device is mostly an integrated structure. When replacing, it needs to be replaced as a whole, resulting in large losses, which is not conducive to long-term production development.

[0004] In summary, the problems of the existing sealing device, such as the high wear rate of the sleeve, the short service life, and the poor sealing effect when the rotary equipment swings, need to be solved. Utility Model Content

[0005] The purpose of the utility model is to provide a radial sealing device for a rotary kiln, so as to solve the problem that the sleeve has a high wear rate and needs to be replaced as a whole.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a radial sealing device for a rotary kiln, comprising a stationary device and a cylinder rotatably connected to a port of the stationary device, characterized in that a sleeve is sleeved on the outer wall of the cylinder, a collecting barrel is fixedly connected to the stationary device, a sealing assembly is provided on the collecting barrel, and a steel wire rope is provided on the sealing assembly.

[0007] Preferably, the sealing assembly includes a plurality of sealing plates and pressure plates, the pressure plates are fixedly mounted on the outer wall of the collecting barrel, and a spacer block is provided between the pressure plate and the collecting barrel, and the sealing plate is slidably mounted on the lower side of the spacer block.

[0008] Preferably, there are a plurality of sealing plates, which are connected end to end to form a ring, and the outer wall on one side is movably connected to the sleeve, and a guide block is provided between each two sealing plates.

[0009] Preferably, the sleeve is in the shape of an upper character, a return plate is provided on the inner wall of the sleeve, a flange is provided on the cylinder, and the sleeve is fixedly connected to the cylinder through the flange.

[0010] Preferably, the collecting barrel is arc-shaped, one end of the collecting barrel is fixedly connected to the stationary equipment, a cooling plate is provided on the inner wall of the collecting barrel, an ash hopper is fixedly connected to the arc-shaped port of the collecting barrel, and a flap valve is provided on the ash hopper.

[0011] Preferably, a groove is provided on the sealing plate, a guide groove plate is fixedly connected to the groove, the steel wire rope is movably connected to the guide groove plate, both ends of the steel wire rope extend to the interior of the guide groove plate, and pulleys are provided on the outer wall, and counterweight blocks are fixedly connected to both ends of the steel wire rope.

[0012] Preferably, the cooling plate is bent, and both ends thereof are fixedly connected to the inner walls of the adjacent two sides of the collecting barrel.

[0013] Preferably, an air inlet and an air outlet are symmetrically provided on the collecting barrel, and both the air inlet and the air outlet pass through the outer wall of one side of the cooling plate.

[0014] Preferably, the thickness of the spacer block is greater than the thickness of the sealing plate.

[0015] The technical effects and advantages of the utility model are as follows: the sleeve is provided with counterweight blocks on both sides to keep the wire rope always in a taut state, so that the sealing component is kept in close contact with the outer wall of the sleeve to achieve sealing, and the sealing component can swing with the swing of the cylinder body to achieve better sealing effect; a cooling plate is provided on the aggregate barrel, which passes through the outer wall of the aggregate barrel through the air inlet and the air outlet, so that the cold air passes through the cooling plate to cool the friction heat of the sealing component to increase the service life of the sealing component; and the sealing plate or other parts can be replaced separately by removing the pressure plate, which is convenient for maintenance and can reduce waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is a left view structural schematic diagram of the utility model;

[0018] Figure 3 This is an enlarged structural diagram of point A of the present utility model;

[0019] Figure 4This is an enlarged structural diagram of point B of the present utility model;

[0020] Figure 5 This is a schematic diagram of the expanded structure of point A of the present utility model.

[0021] In the figure: 1. Cylinder; 2. Stationary equipment; 3. Sleeve; 31. Connecting plate 1; 32. Connecting plate 2; 4. Collecting cylinder; 41. Shell plate 1; 42. Shell plate 2; 43. Connecting cylinder; 5. Sealing assembly; 51. Sealing plate; 52. Pressing plate; 53. Spacer block; 54. Guide block; 55. Guide plate; 6. Return plate; 7. Flange; 8. Cooling plate; 9. Ash hopper; 10. Flap valve; 11. Wire rope; 12. Counterweight; 13. Pulley; 14. Air inlet; 15. Air outlet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The utility model provides Figure 1-5 The rotary kiln radial sealing device shown in FIG comprises a stationary device 2 and a cylinder 1 rotatably connected to the end of the stationary device 2. A sleeve 3 is sleeved on the outer wall of the cylinder 1. A collection barrel 4 is fixedly connected to the stationary device 2. The collection barrel 4 is provided with a sealing assembly 5, and a steel wire rope 11 is installed on the sealing assembly 5. The collection barrel 4 is symmetrically provided with an air inlet 14 and an air outlet 15. The air inlet 14 and the air outlet 15 both extend through the outer wall of one side of the cooling plate 8. The sleeve 3 is fixedly connected to the cylinder 1 through the flange 7, and rotates synchronously when the cylinder 1 rotates. The collecting barrel 4 is fixedly installed on the stationary equipment 2. When the cylinder 1 rotates, the collecting barrel 4 remains stationary. The sealing assembly 5 is located between the sleeve 3 and the collecting barrel 4. When the cylinder 1 rotates, the sealing assembly 5 remains relatively stationary. The counterweight blocks 12 set on both sides keep the wire rope 11 always taut, so that the sealing assembly 5 remains in close contact with the outer wall of the sleeve 3 to achieve sealing. A cooling plate 8 is provided on the collecting barrel 4, and the outer wall of the collecting barrel 4 is penetrated through the air inlet 14 and the air outlet 15, so that the cold air passes through the cooling plate 8 to cool the friction heat of the sealing assembly 5 and the heat conducted from the cylinder 1, so as to improve the service life of the sealing assembly 5.

[0024] Specifically, the sleeve 3 is in the shape of an "up" character rotated 90 degrees to the right, and a return plate 6 is provided on the inner wall of the sleeve 3. A flange 7 is provided on the cylinder 1, and the sleeve 3 is fixedly connected to the cylinder 1 through the flange 7. Figure 4As shown, the sleeve 3 is in the shape of an "upper" composed of a cylinder 1, a connecting plate 1 31 and a connecting plate 2 32, wherein the cylinder is sleeved on the outside of the cylinder body 1, and the connecting plate 1 31 and the connecting plate 2 32 are respectively perpendicular to the outer wall of the cylinder body 1, and the sleeve 3 is fixedly connected to the cylinder body 1 through the connecting plate 2 32 and the flange 7, and then fixedly installed on the cylinder body 1, and the connecting plate 2 32 is located at one end of the cylinder, and one end thereof is located on a side parallel to the connecting plate 1 31, and the other end extends to a side close to the collecting barrel 4, and a gap is formed between the cylinder, the connecting plate 1 31 and the connecting plate 2 32. A return plate 6 is provided in the rectangular groove, and a material scoop is formed at the connection between the cylinder 1 and the stationary device 2 through the return plate 6 to achieve the purpose of returning the material. The sealing component 5 is movably connected to the outer wall of the cylinder 1; wherein the outer wall of the sleeve 3 is a smooth surface to reduce the friction between the sealing plate 51 and the cylinder 1, reduce the wear of the sealing plate 51, and increase the service life; at the same time, the sealing component 5 is a structure with multiple movably installed parts. After disassembling the pressure plate 52, some parts can be replaced or repaired for easy use, reducing unnecessary waste.

[0025] Specifically, the collecting barrel 4 is in an arc shape, one end of which is fixedly connected to the stationary device 2. A cooling plate 8 is provided on the inner wall of the collecting barrel 4. An ash hopper 9 is fixedly connected to the arc-shaped end of the collecting barrel 4, and a flap valve 10 is provided on the ash hopper 9. The cooling plate 8 is bent, and its two ends are fixedly connected to the inner walls of the adjacent two sides of the collecting barrel 4. Figure 3 As shown in FIG4, the collecting barrel 4 is connected to the cylinder 2, the shell plate 1 41 and the shell plate 2 42, the shell plate 1 41 and the shell plate 2 42 are fixedly mounted on both ends of the cylinder 2, and a connecting barrel 43 is provided on the shell plate 2 42 for fixing the collecting barrel 4 to the stationary device 2. The cooling plate 8 is located between the cylinder 2 and the shell plate 1 41. The two ends of the cold cutting plate are fixedly connected to the cylinder 2 and the shell plate 1 41 to form a cavity, and the cooling plate 8 is a bent structure. When the material leaks to the shell plate The second plate 42 and the cooling plate 8 can be guided by the bent cooling plate 8 to enter the ash hopper 9, and a flap valve 10 for closing its port is provided on the ash hopper 9 to block the outside. The sealing plate 51 is movably installed on the outer wall of the shell plate 41 through the pressure plate 52, and when the sleeve 3 rotates with the cylinder 1 or when the cylinder 1 swings, the sealing plate 51 can be tightened by the wire rope 11 and move up and down with the rotation or swing of the cylinder 1, so that the sealing plate 51 achieves a continuous sealing effect.

[0026] Specifically, the sealing assembly 5 includes a plurality of sealing plates 51 and a pressure plate 52. The pressure plates 52 are fixedly mounted on the outer wall of the collecting barrel 4, and a spacer block 53 is provided between the pressure plate 52 and the collecting barrel 4. The sealing plate 51 is slidably mounted on the lower side of the spacer block 53. There are a plurality of sealing plates 51, and the plurality of sealing plates 51 are connected end to end to form a ring, and the outer wall on one side is movably connected to the sleeve 3, and a guide block 54 is provided between the two sealing plates 51. The thickness of the spacer block 53 is greater than the thickness of the sealing plate 51. A groove is provided on the sealing plate 51, and a guide groove plate 55 is fixedly connected in the groove. The wire rope 11 is movably connected to the guide groove plate 55. Both ends of the wire rope 11 extend to the inside of the guide groove plate 55, and pulleys 13 are provided on the outer wall. The counterweight blocks 12 are fixedly connected to both ends of the wire rope 11. Please refer to the attached Figure 3 、 4 As shown in , 5, there are several pressure plates 52, which are all connected to the shell plate 41 through a pair of bolts through a spacer plate. The thickness of the spacer plate is greater than the thickness of the sealing plate 51, which limits the gap between the pressure plate 52 and the shell plate 41, so that after the pressure plate 52 is fixed, the sealing plate 51 can still slide between the shell plate 41 and the pressure plate 52. The outer walls on both sides of the sealing plate 51 are both notches, and the two sealing plates 51 are connected by a concave-convex fit. The guide plate is movably installed between the two sealing plates 51 to divide and guide the sealing plates 51 and limit the sliding direction of the sealing plates 51; a groove is provided on the top of the sealing plate 51, and a guide groove plate 55 is fixedly installed in the groove. A groove for installing a wire rope is provided on the guide groove plate 55. The guide rope groove 11 guides and fixes the wire rope 11; the two ends of the wire rope 11 are wound on the pulley 13, and the pulley 13 cooperates with the counterweight 12 to tighten the wire rope 11 in the direction of tightening, tightening the sealing block, and then making the outer wall of one side of the sealing block close to the outer wall of the cylinder 1, thereby achieving a sealing effect; and, when the sleeve 3 rotates with the cylinder 1 or when the cylinder 1 swings, the sealing plate 51 can be tightened by the wire rope 11 and move up and down with the rotation or swing of the cylinder 1, and the guiding effect of the guide plate prevents the sealing plate 51 from deviating from its position, so as to achieve a continuous sealing effect; at the same time, through the movable installation method, some parts can be replaced or repaired after removing the pressure plate 52 for use.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A radial sealing device for a rotary kiln, comprising a stationary device (2) and a cylinder (1) rotatably connected to a port of the stationary device (2), characterized in that: The outer wall of the cylinder (1) is sleeved with a sleeve (3), the stationary device (2) is fixedly connected to a collecting cylinder (4), a sealing assembly (5) is provided on the collecting cylinder (4), and a steel wire rope (11) is provided on the sealing assembly (5); The sealing assembly (5) includes a plurality of sealing plates (51) and a pressure plate (52), wherein the pressure plates (52) are fixedly mounted on the outer wall of the collecting barrel (4), and a spacer block (53) is provided between the pressure plate (52) and the collecting barrel (4), and the sealing plate (51) is slidably mounted on the lower side of the spacer block (53); there are a plurality of sealing plates (51), and the plurality of sealing plates (51) are connected end to end to form a ring, and the outer wall of one side thereof is movably connected to the sleeve (3), and a guide block (54) is provided between two sealing plates (51); The sealing plate (51) is provided with a groove, a guide groove plate (55) is fixedly connected in the groove, the steel wire rope (11) is movably connected to the guide groove plate (55), both ends of the steel wire rope (11) extend to the inside of the guide groove plate (55), and pulleys (13) are provided on the outer wall, and the two ends of the steel wire rope (11) are respectively fixedly connected to counterweight blocks (12).

2. A rotary kiln radial sealing device according to claim 1, characterized in that: The sleeve (3) is in the shape of an "up" character, a return plate (6) is provided on the inner wall of the sleeve (3), a flange (7) is provided on the cylinder (1), and the sleeve (3) is fixedly connected to the cylinder (1) via the flange (7).

3. The radial sealing device for a rotary kiln according to claim 1, characterized in that: The collecting barrel (4) is in an arc shape, one end of the collecting barrel (4) is fixedly connected to the stationary device (2), a cooling plate (8) is provided on the inner wall of the collecting barrel (4), an ash hopper (9) is fixedly connected to the arc-shaped end of the collecting barrel (4), and a flap valve (10) is provided on the ash hopper (9).

4. A rotary kiln radial sealing device according to claim 3, characterized in that: The cooling plate (8) is bent, and its two ends are fixedly connected to the inner walls of the adjacent two sides of the collecting barrel (4).

5. The rotary kiln radial sealing device according to claim 3, characterized in that: An air inlet (14) and an air outlet (15) are symmetrically arranged on the collecting barrel (4), and the air inlet (14) and the air outlet (15) both pass through the outer wall of one side of the cooling plate (8).

6. The rotary kiln radial sealing device according to claim 1, characterized in that: The thickness of the spacer block (53) is greater than the thickness of the sealing plate (51).

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