Rotary kiln sealing device

Abstract

The utility model relates to the technical field of thermal equipment, in particular to a rotary kiln sealing device which comprises a kilneye cylinder, a plurality of sealing plates evenly distributed in the circumferential direction of the kilneye cylinder are arranged on the kilneye cylinder, and the sealing plates are sequentially arranged in a fish scale mode in an overlapped mode. A first sealing mechanism capable of sealing the kilneye is arranged on the kilneye barrel, extrusion assemblies which correspond to the sealing plates one to one and can extrude the sealing plates are arranged on the kilneye barrel, and adjusting assemblies capable of adjusting the extrusion force are arranged on the extrusion assemblies; through the design of the extrusion assembly and the adjusting assembly, the extrusion force of the sealing plate can be adjusted, the pressure of a compression spring on the sealing plate is adjusted by rotating a screw rod, and it is guaranteed that the sealing plate is always kept in a good sealing state; and meanwhile, compensation adjustment can be conveniently conducted after the sealing plate or other parts are abraded to a certain degree, and the service life of the sealing device is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermal equipment, in particular to a rotary kiln sealing device. BACKGROUND

[0002] At present, in the field of modern industry, rotary kiln plays a vital role and is widely used in cement, metallurgy, chemical industry and many other industries. The working environment of rotary kiln is usually very harsh, its interior is in a high temperature state, and it is accompanied by complex processes such as tumbling of materials and chemical reactions. Under such working conditions, the sealing problem of rotary kiln becomes a key factor affecting the performance and efficiency of the entire production system.

[0003] The traditional rotary kiln sealing device has insufficient sealing performance, resulting in a large amount of heat being lost to the surrounding environment through the kiln opening. This heat loss not only increases energy consumption, but also can affect the uniformity of temperature distribution in the kiln, thereby negatively affecting product quality. At the same time, some raw materials will produce a large amount of fine dust particles during calcination. If the sealing device is not tightly sealed, these dusts will escape from the kiln opening, polluting the surrounding environment and affecting the working environment and health of the operators. At the same time, the escape of dust also means waste of raw materials, reducing production efficiency.

[0004] Moreover, during the long-term operation of the rotary kiln, due to factors such as rotation of the kiln body, temperature change and scouring of the material, the components of the sealing device will gradually wear out. The traditional sealing device often cannot effectively adjust and compensate when facing such wear and tear, for example, some simple sealing gaskets will have a sharp decline in sealing effect after wear and tear, and there is no corresponding adjustment mechanism to restore their sealing performance. This results in the need to frequently replace the sealing device, increasing equipment maintenance costs and downtime, further affecting the continuity of production and the economic benefits of the enterprise.

[0005] Therefore, a new type of rotary kiln sealing device with good sealing performance and adjustability and high stability is invented to solve the problems in the above background technology. CONTENT OF THE INVENTION

[0006] In order to solve the problem that the traditional rotary kiln sealing device often cannot effectively adjust and compensate when wear and tear occurs, the present application provides a rotary kiln sealing device.

[0007] The application provides a rotary kiln sealing device, which adopts the following technical scheme: a kiln opening cylinder is arranged, wherein a plurality of sealing plates are arranged on the kiln opening cylinder and are uniformly distributed along the circumference of the kiln opening cylinder, the plurality of sealing plates are arranged in a fish scale type and are arranged in sequence in a staggered manner, a first sealing mechanism for sealing the kiln opening is arranged on the kiln opening cylinder, an extrusion assembly corresponding to the sealing plates and capable of extruding the sealing plates is arranged on the kiln opening cylinder, and an adjusting assembly for adjusting the extrusion degree is arranged on the extrusion assembly.

[0008] Optionally, the first sealing mechanism comprises an elastic sealing pad, a contact portion is arranged on the sealing plate, the contact portion is located in the mutual overlapping area of the two adjacent sealing plates, and the elastic sealing pad is arranged in the contact portion and is extruded when the sealing plates are overlapped with each other; and the contact surface of the elastic sealing pad and the sealing plate is arranged in a sawtooth shape.

[0009] Optionally, the extrusion assembly comprises a connecting plate, the connecting plate is fixedly connected to the kiln opening cylinder, a guide cylinder is arranged on the connecting plate, a sliding block capable of sliding is arranged in the guide cylinder, a compression spring is arranged on one end of the sliding block close to the sealing plate, a pressing block is arranged on one end of the compression spring close to the sealing plate, and the pressing block is in contact with the sealing plate on the corresponding side.

[0010] Optionally, the adjusting assembly comprises a rotating screw, a threaded hole is arranged on one end of the guide cylinder away from the sealing plate, the rotating screw is threadedly connected in the guide cylinder, and one end of the rotating screw away from the sealing plate extends out of the threaded hole and is provided with a handle.

[0011] Optionally, a sliding groove is arranged in the guide cylinder, and the sliding block can slide along the sliding groove.

[0012] In summary, the application has the following beneficial technical effects:

[0013] 1. The sealing plates arranged in a fish scale type are overlapped with each other, and the elastic sealing pad is arranged in the overlapping area; when the sealing plates are overlapped with each other, the elastic sealing pad is extruded, the sawtooth-shaped contact surface can better fill the gap, effectively prevents gas or material leakage, and improves the sealing effect of the rotary kiln.

[0014] 2. The extrusion degree of the sealing plate can be adjusted through the design of the extrusion assembly and the adjusting assembly; the position of the sliding block in the guide cylinder is changed through the rotating screw, and then the pressure of the compression spring on the sealing plate is adjusted; the adjustability can meet the needs of the rotary kiln under different working conditions, such as thermal expansion and contraction of the kiln body, so as to ensure that the sealing plate always maintains a good sealing state; meanwhile, the sealing device can be compensated and adjusted after a certain degree of wear of the sealing plate or other parts, thereby prolonging the service life of the sealing device. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The overall structure of the device is shown in Figure 2. Figure I ;

[0016] Figure 2 The overall structure of the device is shown in Figure 2. Figure II ;

[0017] Figure 3 This is the main view of the device;

[0018] Figure 4 is a full cutaway view of the extrusion assembly of the device;

[0019] Figure 5 For this device Figure 3 A magnified view of middle A;

[0020] Figure 6 For this device Figure 4 Enlarged view of middle B;

[0021] Among them, 1. kiln mouth cylinder, 2. sealing plate, 3. first sealing mechanism, 4. extrusion assembly, 5. adjustment assembly, 6. elastic sealing gasket, 7. contact part, 8. connecting plate, 9. guide cylinder, 10. sliding block, 11. compression spring, 12. pressure block, 13. rotating screw, 14. turning handle, 15. slide groove. DETAILED DESCRIPTION

[0022] The present application is further described in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limiting the present invention.

[0023] Reference Figure 1 One embodiment shown includes a kiln mouth cylinder 1, wherein a plurality of sealing plates 2 uniformly distributed along the circumference of the kiln mouth cylinder 1 are fixedly connected to the circumference thereof by bolts, and the plurality of sealing plates 2 are overlapped and arranged in sequence in a fish scale pattern. The kiln mouth cylinder 1 is provided with a first sealing mechanism 3 for sealing the kiln mouth, and the kiln mouth cylinder 1 is provided with an extrusion assembly 4 corresponding one-to-one with the sealing plates 2 and capable of extruding the sealing plates 2, and the extrusion assembly 4 is provided with an adjustment assembly 5 for adjusting the extrusion force;

[0024] The implementation principle is that the sealing plates 2 are overlapped with each other in the fish scale arrangement, and no matter how the kiln body rotates or slightly shifts when the rotary kiln is running, the overlapped structure can form multiple layers of sealing defense lines to reduce the leakage path, thereby improving the sealing performance.

[0025] Referring to Figure 5 An embodiment shown in the drawings is that the first sealing mechanism 3 comprises an elastic sealing gasket 6, the elastic sealing gasket 6 is made of high-temperature-resistant rubber, a contact portion 7 is formed on the sealing plate 2, the contact portion 7 is located in the overlapping area of the two adjacent sealing plates 2, the elastic sealing gasket 6 is fixedly bonded in the contact portion 7, the elastic sealing gasket 6 is pressed when the sealing plates 2 are overlapped, and the contact surface of the elastic sealing gasket 6 and the sealing plate 2 is formed in a sawtooth shape. When installing, the elastic sealing gasket 6 is firmly installed, and the sawtooth-shaped contact surface is tightly fitted.

[0026] The implementation principle is that the elastic sealing gasket 6 is pressed when the sealing plates 2 are overlapped, the sawtooth-shaped contact surface can increase the friction force and the contact area between the sealing gasket and the sealing plate 2, better fill the possible small gap, prevent gas or material from leaking from the overlapping area, and at the same time, the elasticity of the elastic sealing gasket 6 can adapt to the slight deformation of the sealing plate 2 under different working conditions.

[0027] Referring to Figure 4 , Figure 6 An embodiment shown in the drawings is that the pressing assembly 4 comprises a connecting plate 8, the connecting plate 8 is fixedly welded on the kiln mouth cylinder 1, the connecting plate 8 is fixedly connected with a guide cylinder 9 arranged in the radial direction of the kiln mouth cylinder 1, the guide cylinder 9 is slidably connected with a slidable sliding block 10, one end of the sliding block 10 close to the sealing plate 2 is fixedly connected with a compression spring 11, one end of the compression spring 11 close to the sealing plate 2 is fixedly connected with a pressing block 12, and the pressing block 12 is in contact with the sealing plate 2 on the corresponding side.

[0028] The implementation principle is that when the sealing plate 2 has a displacement or deformation tendency during the running of the rotary kiln, the pressing block 12 applies a continuous pressure to the sealing plate 2 under the action of the compression spring 11, so that the sealing plate 2 remains in a tightly fitted state, and at the same time, the sliding design of the sliding block 10 in the guide cylinder 9 ensures the stability of the structure during the pressure change.

[0029] Referring to Figure 6 An embodiment shown in the drawings is that the adjusting assembly 5 comprises a rotating screw rod 13 and a rotating handle 14, a threaded hole is formed on the end of the guide cylinder 9 away from the sealing plate 2, the rotating screw rod 13 is threadedly connected in the guide cylinder 9, and the rotating handle 14 is installed on the end of the rotating screw rod 13 extending out of the threaded hole, and the position of the rotating screw rod 13 in the guide cylinder 9 is adjusted by rotating the rotating handle 14.

[0030] Principle: when the need to adjust the sealing plate 2 extrusion degree, turn the handle 14 rotating screw 13 in the guide cylinder 9 movement, because the rotating screw 13 and guide cylinder 9 threaded connection, its movement will change the position of the sliding block 10 in the guide cylinder 9, thereby adjusting the compression degree of compression spring 11, in turn, change the pressure block 12 on the sealing plate 2 pressure, realize the precise adjustment of the sealing plate 2 extrusion degree.

[0031] Referring to Figures 1-5 An embodiment shown is: the guide cylinder 9 is provided with a sliding groove 15, the sliding block 10 can slide along the sliding groove 15, the cooperation of the sliding groove 15 in the guide cylinder 9 and the sliding block 10 ensures the stability of the extrusion process, which is conducive to making the pressure uniform on the sealing plate 2.

[0032] The working principle of the device is: in the rotary kiln operation process, the fish scale type arrangement of the sealing plate 2 as the main sealing structure, through the mutual overlap to form a sealing defense line, in the overlap area of the sealing plate 2, the elastic sealing pad 6 fills the gap after being extruded, and the sealing effect is enhanced, the pressure block 12 in the extrusion assembly 4 applies pressure to the sealing plate 2 under the action of the compression spring 11, which ensures that the sealing plate 2 always keeps close contact during operation, when the rotary kiln causes the position or stress of the sealing plate 2 to change due to thermal expansion and contraction, vibration and other reasons, the adjusting assembly 5 can change the compression degree of the compression spring 11 by rotating the screw 13, so as to adjust the extrusion degree of the sealing plate 2.

[0033] The working principle of the device has been described in the above embodiment, the above embodiment only expresses several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the invention patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. Rotary kiln sealing device, comprising a kiln mouth cylinder (1), characterized in that: The kiln mouth cylinder (1) is provided with a plurality of sealing plates (2) which are uniformly distributed along the circumference thereof, the plurality of sealing plates (2) are arranged in a fish scale type in sequence by being overlapped with each other, the kiln mouth cylinder (1) is provided with a first sealing mechanism (3) which can seal the kiln mouth, the kiln mouth cylinder (1) is provided with an extrusion assembly (4) which corresponds to the sealing plate (2) one by one and can extrude the sealing plate (2), and the extrusion assembly (4) is provided with an adjusting assembly (5) which can adjust the extrusion degree.

2. The rotary kiln sealing apparatus of claim 1, wherein: The first sealing mechanism (3) comprises an elastic sealing gasket (6), the sealing plate (2) is provided with a contact portion (7), the contact portion (7) is located in the mutual overlapping area of the two adjacent sealing plates (2), the elastic sealing gasket (6) is arranged in the contact portion (7), the elastic sealing gasket (6) is extruded when the sealing plates (2) are overlapped with each other, and the contact surface of the elastic sealing gasket (6) and the sealing plate (2) is provided in a sawtooth shape.

3. The rotary kiln sealing apparatus of claim 1, wherein: The extrusion assembly (4) comprises a connecting plate (8), the connecting plate (8) is fixedly connected to the kiln mouth cylinder (1), the connecting plate (8) is provided with a guide cylinder (9), the guide cylinder (9) is provided with a sliding block (10) which can slide, one end of the sliding block (10) close to the sealing plate (2) is provided with a compression spring (11), one end of the compression spring (11) close to the sealing plate (2) is provided with a pressing block (12), and the pressing block (12) is in contact connection with the sealing plate (2) on the corresponding side thereof.

4. The rotary kiln sealing apparatus of claim 3, wherein: The adjusting assembly (5) comprises a rotating screw (13), one end of the guide cylinder (9) away from the sealing plate (2) is provided with a threaded hole, the rotating screw (13) is screw-connected in the guide cylinder (9), and one end of the rotating screw (13) away from the sealing plate (2) is provided with a handle (14) and protrudes out of the threaded hole.

5. The rotary kiln sealing apparatus of claim 3, wherein: The guide cylinder (9) is provided with a sliding groove (15), and the sliding block (10) can slide along the sliding groove.

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