CN212253604U

CN212253604U - Rotary kiln with kiln tail box ash collecting and cooling device

Info

Publication number: CN212253604U
Application number: CN202021026000.6U
Authority: CN
Inventors: 高习东; 王德明; 周卫东; 林长贵
Original assignee: Maanshan Xinyang Permanent Magnet Co ltd
Current assignee: Maanshan Xinyang Permanent Magnet Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-12-29
Anticipated expiration: 2030-06-05

Abstract

The utility model discloses a take kiln tail case ash collection cooling device's rotary kiln belongs to rotary kiln technical field. The utility model discloses well rotary kiln afterbody is provided with kiln tail case, and the bottom of kiln tail case is provided with an album ash cooling unit, and wherein an album ash cooling unit includes the unloading pipe that communicates with kiln tail case bottom, and the cross-sectional area from the top down of unloading pipe reduces gradually, and the bottom of unloading pipe is provided with row material pipe, and the top and the bottom of arranging the material pipe are provided with feed control valve and ejection of compact control valve respectively, and the outside cover of arranging the material pipe is equipped with the water-cooling jacket, and the water-cooling jacket splendid attire has the cooling water. The utility model aims to overcome current rotary kiln tail tank bottom ash material temperature higher, easily lead to sending the rubber seal on the jar behind the direct discharge to be scalded badly not enough, provide a take kiln tail tank collection ash cooling device's rotary kiln, can cool off the ash material of kiln tail tank bottom output and collect the processing, avoid the too high equipment damage that arouses of exhaust ash material temperature.

Description

Rotary kiln with kiln tail box ash collecting and cooling device

Technical Field

The utility model relates to a rotary kiln technical field, more specifically say, relate to a take kiln tail case ash collecting and cooling device's rotary kiln.

Background

The rotary kiln is a rotary calcining kiln, belongs to the building material equipment, and can be divided into a cement kiln, a metallurgical chemical kiln and a lime kiln according to different materials to be treated. The cement kiln is mainly used for calcining cement clinker and comprises a dry-process cement kiln and a wet-process cement kiln. The metallurgical chemical kiln is mainly used for the magnetizing roasting of lean iron ore and the oxidizing roasting of chromium and nickel iron ore in steel plants in the metallurgical industry; roasting bauxite in a refractory material plant, roasting clinker in an aluminum plant and aluminum hydroxide; roasting chromium ore sand, chromium ore powder and other minerals in a chemical plant. The lime kiln is used for roasting active lime and light-burned dolomite used in steel plants and iron alloy plants.

Wherein the kiln tail box sets up the afterbody at the rotary kiln, and behind the material entering kiln tail box, the dust that the quality is lighter and flue gas just raise at kiln tail box top, get rid of by kiln tail box is high-end, and the ash material that the quality is heavier just carries out the unloading through kiln tail box bottom, and traditional unloading mode is that directly scraping to sending the jar with scraping the trigger, then in the feed bin is gone into to the rethread air pump to carry out subsequent balling and handle. However, the temperature of the ash material output from the bottom of the kiln tail box is high (generally, the discharge temperature is between 600 and 900 degrees), so that the rubber sealing ring on the sending tank is easily damaged by burning, and therefore, an ash collecting and cooling device of the kiln tail box of the rotary kiln needs to be designed to cool the ash material output from the bottom of the kiln tail box.

Through retrieval, a large number of patents have been published on the ash cooling device of the rotary kiln, such as Chinese patent application No.: 2015205957230, the name of invention creation is: the utility model provides a rotary kiln, this application discloses a rotary kiln, including the kiln body, set up the kiln head at kiln body front end, set up the kiln tail at kiln body rear end, set up preheating chamber at kiln head front end, at the internal combustor that sets up of kiln, set up high temperature resistant layer on the internal wall of kiln, set up the insulating layer at the external wall of kiln, set up the cooler at kiln tail front end, the cooler encircles at kiln tail front end, set up the ash storage box at kiln tail lower extreme, set up the filter screen in ash storage box and kiln tail junction, set up the fan in the ash storage box, at the internal color comparison high temperature inductor that sets up of kiln, color comparison high temperature inductor connects the cooler. The scheme is a good exploration for the ash cooling device of the rotary kiln, but the exploration for the ash cooling device of the rotary kiln in the industry is never stopped.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model aims to overcome current rotary kiln tail tank bottom ash material temperature higher, easily lead to sending the rubber seal on the jar behind the direct discharge to be scalded badly not enough, provide a take kiln tail tank collection ash cooling device's rotary kiln, can cool off the ash material of kiln tail tank bottom output and collect the processing, avoid the too high equipment damage that arouses of exhaust ash material temperature.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a take kiln tail case ash collecting and cooling device's rotary kiln, the rotary kiln afterbody is provided with kiln tail case, kiln tail case's bottom is provided with an ash collecting and cooling unit, wherein an ash collecting and cooling unit includes the unloading pipe that communicates with kiln tail case bottom, the cross-sectional area from the top down of unloading pipe reduces gradually, and the bottom of unloading pipe is provided with row material pipe, the top and the bottom of arranging the material pipe are provided with feed control valve and ejection of compact control valve respectively, the outside cover of arranging the material pipe is equipped with the water-cooling clamp cover, the splendid attire has the cooling water in the water-cooling clamp cover.

As a further improvement, the utility model discloses still be provided with the urgent row's material pipe that is linked together with the unloading pipe on one side lateral wall of unloading pipe, the urgent row's material pipe extends to the slant that inclines downwards, and the urgent row's material pipe top is provided with urgent blow-off valve.

As a further improvement, the water-cooling jacket is provided with a cavity for holding cooling water, and the top wall and the bottom wall of the water-cooling jacket are provided with through holes for the material discharge pipe to pass through, and the through holes are provided with sealing rings.

As a further improvement of the utility model, the cross-sectional area of the water-cooling jacket is gradually reduced from top to bottom.

As a further improvement, the bottom of the discharge pipe is provided with a thermometer which is positioned above the discharge control valve, and the thermometer is positioned below the water-cooling jacket.

As a further improvement, the bottom of the material discharging pipe and the bottom of the emergency material discharging pipe are both communicated with the top of the material receiving groove.

As a further improvement, a cooling water inlet pipe is connected above one side wall of the water-cooling jacket, and a cooling water outlet pipe is connected below one side wall of the water-cooling jacket.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model discloses a take kiln tail case ash collecting and cooling device's rotary kiln arranges the bottom of material pipe and connects the silo top to be linked together, connects the ash material in the silo to scrape the sending jar through scraping the trigger with scraping, then in the feed bin was gone into to the rethread air pump to carry out subsequent pelletization and handle. Through cooling treatment to the ash in the discharge pipe, discharge the ash again to the ash within cooling to discharge temperature with the ash, avoid the ash high temperature to cause the rubber seal on sending the jar to be scalded badly, improved the life who sends the jar.

(2) The utility model discloses a take kiln tail case ash collecting and cooling device's rotary kiln, the top and the bottom of arranging the material pipe are provided with feeding control valve and ejection of compact control valve respectively, feeding control valve and ejection of compact control valve control respectively arrange the material in the material pipe into, go out, wherein the feeding control valve can avoid getting into the material pipe too much and lead to the cooling of ash not good, ejection of compact control valve can control the ash temperature of following the interior downward exhaust of material pipe and can not reach the predetermined requirement, avoid influencing the life of follow-up equipment. Arrange the outside cover of material pipe and be equipped with the water-cooling jacket, the water-cooling jacket sets up between feeding control valve and ejection of compact control valve, and wherein the splendid attire has the cooling water in the water-cooling jacket, carries out cooling treatment through the cooling water to the periphery of arranging the material pipe to reduce the temperature of arranging the inside ash material of material pipe, make it accord with the emission requirement, can further improve the life who sends the jar.

(3) The utility model discloses a take kiln tail case ash collecting and cooling device's rotary kiln, the top of expecting promptly to arrange the material pipe is linked together with the left side of unloading pipe, and the bottom of expecting promptly to arrange the material pipe is linked together with connecing the silo top, and the ash material gets into to connect the silo after in the expecting promptly to arrange the material pipe from the unloading and discharges. Under the normal condition, the ash material is discharged to connecing the silo in from arranging the material pipe, when row material pipe or water-cooling jacket broke down, then need close the feeding control valve, opens urgent row material valve, and the ash material is discharged to connecing the silo from promptly arranging the material pipe this moment, avoids influencing normal production, can also in time overhaul trouble parts, avoids long-time trouble operation to cause the potential safety hazard.

Drawings

FIG. 1 is a schematic structural view of a rotary kiln with a kiln tail box ash collecting and cooling device of the present invention;

fig. 2 is a schematic structural view of the middle water-cooling jacket of the present invention.

The reference numerals in the schematic drawings illustrate:

100. a rotary kiln; 110. a kiln tail box; 120. an ash collecting and cooling unit; 130. a discharging pipe; 140. a discharge pipe; 141. a feed control valve; 142. a discharge control valve; 143. a temperature meter; 150. an emergency discharge pipe; 151. an emergency discharge valve; 160. a water-cooled jacket; 161. a cooling water inlet pipe; 162. a cooling water outlet pipe; 200. a material receiving groove.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be further described with reference to the following examples.

Example 1

Referring to fig. 1 and fig. 2, in the rotary kiln with the kiln tail box ash collecting and cooling device of the embodiment, the kiln tail box 110 is arranged at the tail of the rotary kiln 100, and the ash collecting and cooling unit 120 is arranged at the bottom of the kiln tail box 110 and is used for collecting and cooling ash materials output from the bottom of the kiln tail box 110, so as to prevent the ash materials from being too hot and damaging equipment. As shown in fig. 1, the ash collecting and cooling unit 120 in this embodiment includes a discharging pipe 130 communicated with the bottom of the kiln tail box 110, and the cross-sectional area of the discharging pipe 130 is gradually reduced from top to bottom, that is, the diameter of the discharging pipe 130 is gradually reduced from top to bottom, so as to effectively guide the ash and accelerate the downward flow speed of the ash. As shown in fig. 1, in this embodiment, a discharging pipe 140 is disposed at the bottom of the discharging pipe 130, the diameter of the discharging pipe 140 is the same as the diameter of the bottom of the discharging pipe 130, a feeding control valve 141 and a discharging control valve 142 are disposed at the top and the bottom of the discharging pipe 140 respectively, and the feeding control valve 141 and the discharging control valve 142 control the feeding and discharging of the ash in the discharging pipe 140 respectively, wherein the feeding control valve 141 can prevent the ash entering the discharging pipe 140 from being too much to cause poor cooling of the ash, and the discharging control valve 142 can control the temperature of the ash discharged from the discharging pipe 140 to be not in accordance with a predetermined requirement, thereby preventing the service life of subsequent equipment from being affected. The outside cover of arranging material pipe 140 is equipped with water-cooling jacket 160, and water-cooling jacket 160 sets up between feed control valve 141 and ejection of compact control valve 142, and wherein the cooling water is contained in the water-cooling jacket 160, carries out cooling treatment through the cooling water to the periphery of arranging material pipe 140 to reduce the temperature of arranging the inside ash material of material pipe 140, make it accord with the emission requirement, can further improve the life of sending the jar. As shown in FIG. 1, in this embodiment, the bottom of the discharge pipe 140 is further provided with a temperature meter 143, the temperature meter 143 is located above the discharge control valve 142, and the temperature meter 143 is located below the water-cooling jacket 160. When the temperature instrument 143 detects that the ash temperature in the discharge pipe 140 does not meet the discharge requirement, the discharge control valve 142 is closed to avoid the damage of the equipment caused by the over-high ash temperature; when the temperature meter 143 detects that the ash temperature in the discharge pipe 140 reaches the discharge requirement, the discharge control valve 142 is opened for discharging. The bottom of arranging material pipe 140 in this embodiment is linked together with connecing silo 200 top, connects the ash material in silo 200 to scrape to sending the jar through scraping with the scraper, then in the feed bin was gone into to the rethread air pump to carry out subsequent pelletization and handle. Through cooling treatment to the ash in the material discharge pipe 140, the ash is cooled to within the discharge temperature and then discharged, so that the phenomenon that the rubber sealing ring on the sending tank is scalded due to overhigh temperature of the ash is avoided, and the service life of the sending tank is prolonged.

As shown in fig. 1, an emergency discharge pipe 150 is further disposed on one side wall of the blanking pipe 130 in the embodiment, the emergency discharge pipe 150 is inclined downward, and an emergency discharge valve 151 is disposed on the top of the emergency discharge pipe 150. Specifically, in this embodiment, the top of the emergency discharging pipe 150 is communicated with the left side of the discharging pipe 130, the bottom of the emergency discharging pipe 150 is communicated with the top of the receiving groove 200, and the ash material is discharged from the discharging pipe 130 into the emergency discharging pipe 150 to the receiving groove 200. Under the normal condition, the ash material is discharged to connecing the silo 200 in from arranging material pipe 140, when arranging material pipe 140 or water-cooling jacket 160 and breaking down, then need close feeding control valve 141, open urgent row material valve 151, the ash material is discharged to connecing the silo 200 in from urgent row material pipe 150 this moment, avoids influencing normal production, can also in time overhaul the trouble part, avoids long-time trouble operation to cause the potential safety hazard.

As shown in fig. 1, in this embodiment, the inside of the water-cooling jacket 160 is provided with a cavity for holding cooling water, and the top wall and the bottom wall of the water-cooling jacket 160 are both provided with through holes for the discharge pipe 140 to pass through, and the through holes are further provided with sealing rings which can ensure the air tightness of the through holes at the upper and lower ends of the water-cooling jacket 160, thereby avoiding leakage of cooling water. Specifically, in the present embodiment, the discharge pipe 140 penetrates through the upper and lower ends of the water-cooling jacket 160, and the periphery of the discharge pipe 140 is immersed in the water-cooling jacket 160, so that the ash in the discharge pipe 140 can be cooled in all directions. The cross-sectional area of the water cooling jacket 160 is gradually reduced from top to bottom, the area of the upper part of the water cooling jacket 160 is large, so that the high-temperature ash which just enters the discharging pipe 140 can be sufficiently cooled, and the water cooling area is gradually reduced from top to bottom after the ash is gradually cooled, so that the cooling cost can be reduced under the condition that the ash is sufficiently cooled. As shown in fig. 2, in this embodiment, a cooling water inlet pipe 161 is connected to a side wall of the water cooling jacket 160, and a cooling water outlet pipe 162 is connected to a side wall of the water cooling jacket 160, that is, the cooling water in the water cooling jacket 160 adopts circulating cooling water, which not only avoids wasting resources, but also can replace the cooling water in the water cooling jacket 160 in time after the temperature of the cooling water rises, thereby avoiding affecting the cooling effect.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a take kiln tail case ash collection cooling device's rotary kiln, rotary kiln (100) afterbody is provided with kiln tail case (110), its characterized in that: the bottom of kiln tail box (110) is provided with collection ash cooling unit (120), wherein collection ash cooling unit (120) include unloading pipe (130) that are linked together with kiln tail box (110) bottom, the cross-sectional area from the top down of unloading pipe (130) reduces gradually, and the bottom of unloading pipe (130) is provided with row material pipe (140), the top and the bottom of arranging material pipe (140) are provided with feeding control valve (141) and ejection of compact control valve (142) respectively, the outside cover of arranging material pipe (140) is equipped with water-cooling jacket (160), the splendid attire has the cooling water in water-cooling jacket (160).

2. The rotary kiln with the kiln tail box ash collecting and cooling device as claimed in claim 1, which is characterized in that: an emergency discharge pipe (150) communicated with the blanking pipe (130) is further arranged on one side wall of the blanking pipe (130), the emergency discharge pipe (150) extends obliquely downwards, and an emergency discharge valve (151) is arranged at the top of the emergency discharge pipe (150).

3. The rotary kiln with the kiln tail box ash collecting and cooling device as claimed in claim 1, which is characterized in that: the water-cooling jacket (160) is internally provided with a cavity for containing cooling water, the top wall and the bottom wall of the water-cooling jacket (160) are both provided with through holes for the discharge pipe (140) to pass through, and sealing rings are further arranged in the through holes.

4. The rotary kiln with the kiln tail box ash collecting and cooling device as claimed in claim 3, wherein: the cross-sectional area of the water-cooling jacket (160) is gradually reduced from top to bottom.

5. The rotary kiln with the kiln tail box ash collecting and cooling device as claimed in claim 1, which is characterized in that: the bottom of the discharge pipe (140) is also provided with a temperature meter (143), the temperature meter (143) is positioned above the discharge control valve (142), and the temperature meter (143) is positioned below the water-cooling jacket (160).

6. The rotary kiln with the kiln tail box ash collecting and cooling device as claimed in claim 2, which is characterized in that: the bottom parts of the discharge pipe (140) and the emergency discharge pipe (150) are communicated with the top part of the material receiving groove (200).

7. The rotary kiln with the kiln tail box ash collecting and cooling device as claimed in any one of claims 1 to 6, wherein: a cooling water inlet pipe (161) is connected above one side wall of the water-cooling jacket (160), and a cooling water outlet pipe (162) is connected below one side wall of the water-cooling jacket (160).