Kiln tail sealing device

Abstract

The utility model provides a kiln tail sealing device, and belongs to the technical field of rotary kilns. The kiln tail sealing device comprises a rotary kiln barrel, a kiln tail smoke chamber, a material returning spoon, a movable friction plate, a static friction plate, high-temperature skin cloth, a smoke chamber sleeve, a smoke chamber tongue plate, a cooling mechanism and a heavy hammer tensioning mechanism, the material returning spoon is fixed to the rotary kiln barrel, and the smoke chamber tongue plate is installed on the kiln tail smoke chamber. The high-temperature skin cloth is installed between the static friction plate and the smoke chamber sleeve, the air leakage problem is thoroughly solved, due to the arrangement of the cooling mechanism, the draught fan introduces cold air into the S-shaped airflow channel, hot airflow obtained after heat exchange is exhausted through the exhaust holes, the cold air continuously enters the cooling cavity, and the cooling efficiency of the smoke chamber tongue plate is guaranteed; the air speed at the position is reduced, dust returning into the smoke chamber from the material returning spoon is reduced, meanwhile, the material carrying capacity of the material returning spoon is improved, and better use experience is brought to a user.

Description

TECHNICAL FIELD

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

[0002] As a kind of thermal calcining equipment, rotary kiln is widely used in cement and metal smelting industry, and is the core equipment of the whole production line. Rotary kiln mainly consists of cylinder, belt, supporting wheel, hydraulic wheel stopper, transmission device, auxiliary transmission, kiln head sealing and kiln tail sealing device.

[0003] The structure of rotary kiln kiln tail sealing is introduced: kiln tail sealing mainly has dynamic and static friction sheet end face compression contact type sealing, flexible fish scale and rotary "cylinder" compression sealing, graphite block and rotary "cylinder" compression sealing (already eliminated) several forms. The kiln tail sealing matched by rotary kiln equipment manufacturers is mostly dynamic and static friction sheet end face compression contact type sealing. The related parts of this kind of sealing mainly include: kiln tail smoke chamber, rotary kiln cylinder, material returning ladle, feeding tongue plate, dynamic friction ring, static friction plate, smoke chamber sleeve, static ring compression cylinder, etc. High-temperature materials enter the rotary kiln from the feeding pipe and are fed into the kiln through the feeding tongue. The material returning ladle is fixedly installed on the kiln cylinder and mainly functions to carry the materials falling between the feeding tongue and the cylinder into the kiln. In order to control the overflow of materials from the smoke chamber into the rotary kiln, a smoke chamber sleeve is installed between the smoke chamber and the rotary kiln. The movable friction plate is installed on the end face of the material returning ladle and rotates with the rotary kiln; the static friction plate is "ridden" on the smoke chamber sleeve in the circumferential direction and remains relatively static under the action of the compression rod. When the rotary kiln is running, the cylinder makes the movable friction plate and the static friction plate tightly contact through the flange plate arranged behind the static friction plate.

[0004] However, the following problems often occur in actual operation: the smoke chamber sleeve is burned and damaged, the cylinder accessories are burned and damaged, resulting in air leakage between the static friction plate and the movable friction plate, air leakage between the static friction plate and the smoke chamber sleeve, serious material leakage caused by burning of the smoke chamber tongue plate, and insufficient material carrying capacity of the material returning ladle, which brings bad user experience to the users. Content of the utility model

[0005] In order to make up for the above shortcomings, the present application provides a kiln tail sealing device, which aims to improve the problems of smoke chamber sleeve being burned and damaged, cylinder accessories being burned and damaged, resulting in air leakage between the static friction plate and the movable friction plate, air leakage between the static friction plate and the smoke chamber sleeve, serious material leakage caused by burning of the smoke chamber tongue plate, and insufficient material carrying capacity of the material returning ladle.

[0006] The present application is implemented as follows:

[0007] The application provides a kiln tail sealing device, which comprises a rotary kiln cylinder, a kiln tail fume chamber, a material returning spoon, a movable friction plate, a static friction plate, a high-temperature skin cloth, a fume chamber sleeve, a fume chamber tongue plate, a cooling mechanism and a heavy hammer tensioning mechanism, the material returning spoon is fixed on the rotary kiln cylinder, the fume chamber tongue plate is installed on the kiln tail fume chamber, one end of the fume chamber sleeve is fixed on the kiln tail fume chamber, and one end of the static friction plate is fixed on the fume chamber tongue plate.

[0008] The static friction plate is sleeved on the fume chamber sleeve, the high-temperature skin cloth is arranged between the static friction plate and the fume chamber sleeve, the movable friction plate is fixed on the end face of the material returning spoon, and the movable friction plate is in close contact with the static friction plate and the fume chamber sleeve.

[0009] The heavy hammer tensioning mechanism is installed on the static friction plate, the arrangement of the heavy hammer tensioning mechanism ensures that the movable friction plate and the static friction plate are always in close contact, and the problem of tensioning failure caused by high temperature is solved.

[0010] The cooling mechanism is installed on the fume chamber tongue plate and the kiln tail fume chamber, and the arrangement of the cooling mechanism is used for cooling the fume chamber tongue plate, so that the cold zone efficiency of the fume chamber tongue plate is ensured.

[0011] In an embodiment of the application, a flange plate is further arranged, the flange plate is fixed on the outer wall of the static friction plate, and a pulley is fixedly installed on the flange plate.

[0012] In an embodiment of the application, the cooling mechanism comprises a fan, a gas guide pipe and a serpentine airflow channel, the fan is fixed on the outer wall of the kiln tail fume chamber, the serpentine airflow channel is arranged in the fume chamber tongue plate, one end of the gas guide pipe is installed on the fan, and the other end of the gas guide pipe is arranged in the serpentine airflow channel.

[0013] In an embodiment of the application, exhaust holes are arranged on the fume chamber tongue plate and the serpentine airflow channel.

[0014] In an embodiment of the application, an installation groove is arranged on the fume chamber tongue plate, and the serpentine airflow channel is fixedly installed in the installation groove.

[0015] In an embodiment of the application, the heavy hammer tensioning mechanism comprises a pulley, a steel wire rope and a tension sensor, the pulley is fixed on the flange plate, the steel wire rope is wound around the pulley, and the tension sensor is installed on the steel wire rope.

[0016] In an embodiment of the application, the material of the fume chamber sleeve is ZGCr25Ni20.

[0017] The application has the beneficial effects that: the kiln tail sealing device provided by the application solves the problem of tensioning failure caused by high temperature by changing the material of the smoke chamber sleeve to ZGCr25Ni20, using the heavy hammer tensioning mechanism, and making the static friction plate and the movable friction plate tightly contact through the pulley, the steel wire rope, the tension sensor and the winding mechanism. The tension sensor monitors the tension on the steel wire rope in real time. When the tension changes, the tension sensor transmits a signal to the control terminal, and the control terminal controls the winding mechanism to work to drive the steel wire rope to work, so that the movable friction plate and the static friction plate are tightly contacted again. The high-temperature skin cloth is installed between the static friction plate and the smoke chamber sleeve, which completely solves the air leakage problem. The setting of the cooling mechanism makes the fan blow cold air into the serpentine airflow channel, and the hot air after heat exchange is discharged from the exhaust hole. Cold air continuously enters the cooling cavity, which ensures the cooling efficiency of the smoke chamber tongue plate. By expanding the diameter of the return spoon, the wind speed at this position is reduced, the dust returned from the return spoon into the smoke chamber is reduced, and the carrying capacity of the return spoon is increased, which brings better use experience to the user. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0019] Figure 1 is a perspective structural schematic view of a kiln tail sealing device provided by the embodiments of the application;

[0020] Figure 2 is a cross-sectional view of the rotary kiln cylinder, the return spoon, the movable friction plate, the static friction plate, the flange plate, the high-temperature skin cloth, the smoke chamber sleeve and the smoke chamber tongue plate provided by the embodiments of the application;

[0021] Figure 3 is a perspective structural schematic view of the heavy hammer tensioning mechanism provided by the embodiments of the application;

[0022] Figure 4 is a relationship diagram of the smoke chamber tongue plate and the serpentine airflow channel provided by the embodiments of the application.

[0023] In the diagram: 110 - Rotary kiln cylinder; 120 - Kiln tail smoke chamber; 130 - Return scoop; 140 - Movable friction plate; 150 - Static friction plate; 160 - Flange; 170 - High-temperature covering cloth; 180 - Smoke chamber sleeve; 191 - Smoke chamber tongue plate; 192 - Mounting groove; 193 - Cooling mechanism; 1931 - Fan; 1932 - Air guide pipe; 1933 - Serpentine airflow channel; 1934 - Exhaust port; 194 - Counterweight tensioning mechanism; 1941 - Pulley; 1942 - Steel wire rope; 1943 - Tension sensor. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Example

[0026] Please see Figures 1-4 This application provides a technical solution: a kiln tail sealing device, including a rotary kiln body 110, a kiln tail smoke chamber 120, a return scoop 130, a movable friction plate 140, a stationary friction plate 150, a high-temperature covering cloth 170, a smoke chamber sleeve 180, a smoke chamber tongue plate 191, a cooling mechanism 193, and a counterweight tensioning mechanism 194. The return scoop 130 is fixed on the rotary kiln body 110, the smoke chamber tongue plate 191 is installed on the kiln tail smoke chamber 120, one end of the smoke chamber sleeve 180 is fixed on the kiln tail smoke chamber 120, and one end of the stationary friction plate 150 is fixed on the smoke chamber tongue plate 191.

[0027] The static friction plate 150 is sleeved on the smoke chamber sleeve 180, and also includes a flange 160. The flange 160 is fixed on the outer wall of the static friction plate 150. A pulley 1941 is fixedly installed on the flange 160. A high-temperature covering cloth 170 is provided between the static friction plate 150 and the smoke chamber sleeve 180. The movable friction plate 140 is fixed on the end face of the return scoop 130. The movable friction plate 140 is in close contact with the static friction plate 150 and the smoke chamber sleeve 180. The material of the smoke chamber sleeve 180 is ZGCr25Ni20. The original material of the smoke chamber sleeve 180 was 1Cr18Ni9Ti.

[0028] The heavy hammer tensioning mechanism 194 is installed on the static friction plate 150, the arrangement of the heavy hammer tensioning mechanism 194 enables the movable friction plate 140 and the static friction plate 150 to be in close contact at all times, and solves the problem of tensioning failure caused by high temperature, the heavy hammer tensioning mechanism 194 comprises a pulley 1941, a steel wire rope 1942 and a tension sensor 1943, the pulley 1941 is fixed on the flange plate 160, the steel wire rope 1942 is wound on the pulley 1941, and the tension sensor 1943 is installed on the steel wire rope 1942; one end of the steel wire rope 1942 is installed on the winding mechanism;

[0029] The cooling mechanism 193 is installed on the smoke chamber tongue plate 191 and the kiln tail smoke chamber 120, the arrangement of the cooling mechanism 193 is used for cooling the smoke chamber tongue plate 191, and ensures the cold zone efficiency of the smoke chamber tongue plate 191, the cooling mechanism 193 comprises a fan 1931, a gas guide pipe 1932 and a serpentine airflow passage 1933, the fan 1931 is fixed on the outer wall of the kiln tail smoke chamber 120, the serpentine airflow passage 1933 is arranged in the smoke chamber tongue plate 191, one end of the gas guide pipe 1932 is installed on the fan 1931, and the other end of the gas guide pipe 1932 is arranged in the serpentine airflow passage 1933, the smoke chamber tongue plate 191 and the serpentine airflow passage 1933 are both provided with exhaust holes 1934, hot air is conveniently discharged, and the smoke chamber tongue plate 191 is provided with a mounting groove 192, and the serpentine airflow passage 1933 is fixedly installed in the mounting groove 192.

[0030] Specifically, the working principle of the kiln tail sealing device is as follows: in use, in order to improve the high-temperature resistance, the material of the smoke chamber sleeve 180 is changed to ZGCr25Ni20, the heavy hammer tensioning mechanism 194 is used, the static friction plate 150 and the movable friction plate 140 are in close contact through the pulley 1941, the steel wire rope 1942, the tension sensor 1943 and the winding mechanism, the problem of tensioning failure caused by high temperature is solved, the tension sensor 1943 monitors the tension on the steel wire rope 1942 in real time, when the tension changes, the tension sensor 1943 transmits a signal to the control terminal, the control terminal controls the winding mechanism to work and drives the steel wire rope 1942 to work, so that the movable friction plate 140 and the static friction plate 150 are in close contact again, the high-temperature skin cloth 170 is installed between the static friction plate 150 and the smoke chamber sleeve 180, and the problem of air leakage is completely solved, the arrangement of the cooling mechanism 193 enables the fan 1931 to introduce cold air into the serpentine airflow passage 1933, the hot air after heat exchange is discharged through the exhaust hole 1934, the cold air continuously enters the cooling cavity, and the cooling efficiency of the smoke chamber tongue plate 191 is ensured, the diameter of the return spoon 130 is expanded, the air speed at the position is reduced, the dust returned into the smoke chamber from the return spoon 130 is reduced, the carrying capacity of the return spoon 130 is increased, and better use experience is brought to the user.

[0031] It should be noted that the specific model and specifications of the rotary kiln cylinder 110, the kiln tail smoke chamber 120, the material returning spoon 130, the smoke chamber tongue plate 191, the fan 1931 and the tension sensor 1943 need to be determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail.

[0032] The power supply of the rotary kiln cylinder 110, the kiln tail smoke chamber 120, the material returning spoon 130, the smoke chamber tongue plate 191, the fan 1931 and the tension sensor 1943 and its principle are clear to those skilled in the art, and will not be described in detail here.

[0033] The above only describes the embodiments of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

Claims

1. A kiln seal apparatus, characterised in that, The rotary kiln cylinder (110), the kiln tail smoke chamber (120), the return material spoon (130), the movable friction plate (140), the static friction plate (150), the high-temperature skin cloth (170), the smoke chamber sleeve (180), the smoke chamber tongue plate (191), the cooling mechanism (193) and the heavy hammer tensioning mechanism (194) are included. The static friction plate (150) is sleeved on the smoke chamber sleeve (180), the high-temperature skin cloth (170) is arranged between the static friction plate (150) and the smoke chamber sleeve (180), the movable friction plate (140) is fixed on the end face of the return material spoon (130), and the movable friction plate (140) is in close contact with the static friction plate (150) and the smoke chamber sleeve (180). The heavy hammer tensioning mechanism (194) is installed on the static friction plate (150), and the arrangement of the heavy hammer tensioning mechanism (194) enables the movable friction plate (140) and the static friction plate (150) to be in close contact at all times. The cooling mechanism (193) is installed on the smoke chamber tongue plate (191) and the kiln tail smoke chamber (120), and the arrangement of the cooling mechanism (193) is used for cooling the smoke chamber tongue plate (191).

2. A kiln tail sealing apparatus according to claim 1, wherein The flange plate (160) is fixed on the outer wall of the static friction plate (150), and the pulley (1941) is fixedly installed on the flange plate (160).

3. A kiln tail sealing apparatus according to claim 1, wherein The cooling mechanism (193) includes the fan (1931), the air guide pipe (1932) and the serpentine air flow channel (1933), the fan (1931) is fixed on the outer wall of the kiln tail smoke chamber (120), the serpentine air flow channel (1933) is arranged in the smoke chamber tongue plate (191), one end of the air guide pipe (1932) is installed on the fan (1931), and the other end of the air guide pipe (1932) is arranged in the serpentine air flow channel (1933).

4. A kiln tail sealing apparatus according to claim 3, wherein The smoke chamber tongue plate (191) and the serpentine air flow channel (1933) are both provided with the exhaust hole (1934).

5. A kiln tail sealing apparatus according to claim 3, wherein The smoke chamber tongue plate (191) is provided with the mounting groove (192), and the serpentine air flow channel (1933) is fixedly installed in the mounting groove (192).

6. A kiln tail sealing apparatus according to claim 2, wherein The heavy hammer tensioning mechanism (194) includes the pulley (1941), the steel wire rope (1942) and the tension sensor (1943), the pulley (1941) is fixed on the flange plate (160), the steel wire rope (1942) is wound on the pulley (1941), and the tension sensor (1943) is installed on the steel wire rope (1942).

7. A kiln tail sealing apparatus according to claim 1, wherein The material of the smoke chamber sleeve (180) is ZGCr25Ni20.

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