Kiln tail structure of rotary kiln

Abstract

The utility model is suitable for the technical field of rotary kilns, and provides a rotary kiln tail structure which comprises a kiln tail body installed on a rotary kiln, and an air outlet is formed in the kiln tail body. The two barrels are fixedly mounted on the inner wall of the top of the kiln tail body, and springs are fixedly mounted on the inner walls of the tops of the two barrels; and the supporting rods are slidably installed on the two barrels correspondingly, pressing plates are fixedly installed at the top ends of the two supporting rods correspondingly, and the tops of the two pressing plates are fixedly connected with the bottoms of the two springs correspondingly. The kiln tail structure of the rotary kiln provided by the scheme has the advantages of being capable of cooling exhausted hot gas, effectively protecting the fan and effectively cleaning dust on the dust baffle.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary kilns, and particularly relates to a rotary kiln tail structure. Background Art

[0002] As an important industrial equipment, the rotary kiln plays a key role in multiple fields such as cement production, metallurgical industry, chemical industry, environmental protection engineering, and mining industry. In cement production, it is used to sinter raw materials such as limestone, clay, and iron ore into cement clinker at high temperatures; in the metallurgical industry, it is used for the roasting and reduction processes of ores. The tail and the head of the rotary kiln are located at both ends respectively, each undertaking important functions.

[0003] After retrieval, a rotary kiln tail sealing structure with the authorization announcement number of CN220552263U has a structure including a rotating cylinder, a kiln tail, and a collecting hopper. A friction sleeve is provided on the left side of the rotating cylinder, and the rotating cylinder is fixedly sleeved with the friction sleeve. A fish scale ring is provided on the left side of the friction sleeve. Compared with the prior art, the utility model has the following beneficial effects: by setting an air outlet, an exhaust fan, and a dust baffle, when the exhaust fan works, the air pressure around the exhaust fan decreases, so that the wind speed flowing towards the exhaust fan speeds up. The hot air mixed with dust passes through the dust baffle, and the dust baffle blocks the dust and makes the hot air pass through the exhaust fan, and finally flows through the air outlet to the hot air treatment mechanism. By setting a collecting hopper, an air deflector, and an ash discharge port, the impurity dust is blown into the interior of the collecting hopper under the blockage of the air deflector, and the dust and impurities fall into the discharge port through the collecting cavity, and finally are discharged through the ash discharge port and transported to the dust treatment mechanism.

[0004] However, there are some deficiencies in the above scheme during use. First of all, since the exhaust fan is directly arranged inside the kiln tail, its working environment temperature is relatively high, which easily causes the exhaust fan to overheat, thereby affecting its service life. Secondly, although the dust baffle can reduce the dust discharged from the air outlet, it is easily blocked by dust during long-term use, thereby affecting its use performance. Summary of the Utility Model

[0005] The utility model provides a rotary kiln tail structure, aiming to solve the problems that in the existing rotary kiln tail during use, the exhaust fan will affect its service life due to excessive temperature, and the dust baffle is easily blocked by dust during long-term use as put forward in the above background art.

[0006] To solve the above problems, the present utility model is implemented as follows. A kiln tail structure of a rotary kiln includes: a kiln tail body installed on the rotary kiln, and an air outlet is provided on the kiln tail body; two cylinders fixedly installed on the inner wall of the top of the kiln tail body, and springs are fixedly installed on the inner walls of the tops of the two cylinders; support rods respectively slidably installed on the two cylinders, pressing plates are fixedly installed at the tops of the two support rods, and the bottoms of the two pressing plates are respectively fixedly connected to the bottoms of the two springs; a dust blocking plate fixedly installed on the two support rods for intercepting dust; a knocking mechanism assembled on the kiln tail body for knocking the dust blocking plate; and a gas suction mechanism installed on the kiln tail body for cooling gas.

[0007] Preferably, the knocking mechanism includes: a rotating shaft rotatably installed on the kiln tail body; a motor provided on one side of the kiln tail body, and the output shaft of the motor is fixedly connected to one end of the rotating shaft; a cam fixedly installed on the rotating shaft; and a pressing block fixedly installed on the dust blocking plate, and the pressing block is located above the cam.

[0008] Preferably, the gas suction mechanism includes: a box body fixedly installed on one side of the kiln tail body for storing coolant, a temperature sensor is fixedly installed on the inner wall of one side of the box body; a blower fixedly installed at the bottom of the box body; a cooling pipe fixedly installed on the box body, and both ends of the cooling pipe extend to the outside of the box body, one end of the cooling pipe is fixedly connected to the air inlet end of the blower, the other end of the cooling pipe is fixedly installed with a suction hood, and the bottom of the suction hood is fixedly connected to the air outlet; a refrigeration device fixedly installed on the box body; and a controller fixedly installed on the box body.

[0009] Preferably, a support block is fixedly installed on one side of the kiln tail body, and the top of the support block is fixedly connected to the bottom of the motor.

[0010] Preferably, a water injection pipe is fixedly installed on the top of the box body, a hopper is fixedly installed at the top end of the water injection pipe, and a first valve is provided on the water injection pipe.

[0011] Preferably, a discharge pipe is fixedly installed at the bottom of the box body, and a second valve is provided on the discharge pipe.

[0012] Preferably, the dust blocking plate is inclined, and the cooling pipe is made of stainless steel.

[0013] Compared with the related art, the kiln tail structure of the rotary kiln provided by the present utility model has the following beneficial effects:

[0014] Compared with the prior art, the tail structure of the rotary kiln provided by this solution can facilitate the addition of coolant into the box by using the water injection pipe and the hopper. When adding, the first valve needs to be opened first, and the hot gas inside the kiln tail body can be extracted by the gas suction mechanism. The extracted hot gas will be cooled by the coolant with a lower temperature, so that it can avoid the high-temperature gas passing through the fan of the gas suction mechanism, and prevent the fan from shortening its service life due to overheating, with good use effect. The dust-proof plate can filter the hot gas entering the gas suction mechanism, thereby effectively improving the purity of gas emissions. It can not only reduce the pollution to the inside of the gas suction mechanism, but also reduce the pollution to the environment caused by dust. The knocking mechanism can make the dust-proof plate shake off the attached dust by quickly moving up and down, thereby improving the use performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic cross-sectional structure diagram of a tail structure of a rotary kiln provided by the present utility model;

[0016] Figure 2 is Figure 1 an enlarged structure diagram of part A shown in

[0017] Figure 3 is Figure 1 an enlarged structure diagram of part B shown in

[0018] Figure 4 is a three-dimensional structure diagram of the rotating shaft and the cam in the present utility model.

[0019] Reference numerals: 1, kiln tail body; 2, exhaust port; 3, cylinder; 4, spring; 5, support rod; 6, pressing plate; 7, dust-proof plate; 8, rotating shaft; 9, motor; 10, cam; 11, extrusion block; 12, fan; 13, cooling pipe; 14, suction hood; 15, box body; 16, temperature sensor; 17, refrigeration device; 18, controller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order; the orientation or positional relationship indicated by the terms "inside", "outside", "left", "right" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, and does 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 construed as a limitation on the present utility model.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] An embodiment of the present utility model provides a structure for the tail of a rotary kiln, as Figures 1-4 shown. The structure for the tail of the rotary kiln includes: a tail body 1 installed on the rotary kiln, and an air outlet 2 is arranged on the tail body 1; two cylinders 3 fixedly installed on the inner wall of the top of the tail body 1, and springs 4 are fixedly installed on the inner walls of the tops of the two cylinders 3; support rods 5 slidably installed on the two cylinders 3 respectively, and pressing plates 6 are fixedly installed at the tops of the two support rods 5, and the tops of the two pressing plates 6 are respectively fixedly connected to the bottoms of the two springs 4; a dust blocking plate 7 fixedly installed on the two support rods 5 for intercepting dust; a knocking mechanism assembled on the tail body 1 for knocking the dust blocking plate 7; and a gas suction mechanism installed on the tail body 1 for cooling the gas.

[0023] In this embodiment, during the use of the kiln tail body 1, a gas suction mechanism can be adopted to extract the hot gas inside the kiln tail body 1. Before these hot gases are extracted, they will be filtered by the dust baffle 7, which can effectively improve the purity of gas emissions and reduce the pollution brought by dust to the environment. During the process of sucking the hot gas, the suction mechanism will use a coolant with a lower temperature to cool the hot gas, thus avoiding the passage of the hot gas with a higher temperature through the fan 12 of the gas suction mechanism and preventing the fan 12 from shortening its service life due to excessive temperature. The use effect is good. In order to ensure the performance of the dust baffle 7, the knocking mechanism can be started during the use of the kiln tail body 1. The knocking mechanism will continuously knock on the dust baffle 7, causing the dust baffle 7 to move up and down reciprocally. The two support rods 5 connected to the dust baffle 7 will also drive the two pressing plates 6 to move respectively, causing the two pressing plates 6 to continuously squeeze the two springs 4. In this way, the dust baffle 7 can shake off the attached dust through rapid up and down movement, thereby improving the performance.

[0024] In a further preferred embodiment of the present invention, the knocking mechanism includes: a rotating shaft 8 rotatably installed on the kiln tail body 1; a motor 9 arranged on one side of the kiln tail body 1, the output shaft of the motor 9 being fixedly connected to one end of the rotating shaft 8; a cam 10 fixedly installed on the rotating shaft 8; and a pressing block 11 fixedly installed on the dust baffle 7, the pressing block 11 being located above the cam 10.

[0025] In this embodiment, the knocking mechanism is used to knock on the dust baffle 7. During use, the motor 9 is started to drive the rotating shaft 8 to rotate. The rotating shaft 8 will drive the cam 10 to rotate, causing the cam 10 to continuously push the pressing block 11, and thus the dust baffle 7 can move up and down reciprocally. The two support rods 5 connected to the dust baffle 7 will also drive the two pressing plates 6 to move respectively, causing the two pressing plates 6 to continuously squeeze the two springs 4. In this way, the dust baffle 7 can shake off the attached dust through rapid up and down movement, thereby improving the performance.

[0026] In a further preferred embodiment of the present invention, the gas suction mechanism includes: a box body 15 fixedly installed on one side of the kiln tail body 1 for storing coolant, a temperature sensor 16 fixedly installed on an inner wall on one side of the box body 15; a fan 12 fixedly installed at the bottom of the box body 15; a cooling pipe 13 fixedly installed on the box body 15, both ends of the cooling pipe 13 extending to the outside of the box body 15, one end of the cooling pipe 13 being fixedly connected to the air inlet end of the fan 12, the other end of the cooling pipe 13 being fixedly installed with a suction hood 14, the bottom of the suction hood 14 being connected to the exhaust port 2; a refrigeration device 17 fixedly installed on the box body 15; and a controller 18 fixedly installed on the box body 15.

[0027] In this embodiment, the gas suction mechanism is used to cool the gas. When in use, the fan 12 is started. Through the cooperation of the cooling pipe 13 and the suction hood 14, the hot gas in the main body 1 of the kiln tail is extracted from the exhaust port 2, so that these hot gases can be discharged from the exhaust end of the fan 12. Since the cooling pipe 13 is immersed in the coolant in the box body 15, the hot gas will be fully cooled before entering the fan 12, thereby preventing the fan 12 from shortening its service life due to excessive temperature. During the use of the gas suction mechanism, the temperature sensor 16 continuously detects the temperature of the coolant. When the temperature is relatively high, the controller 18 automatically starts the refrigeration device 17 to refrigerate the coolant until the temperature of the coolant reaches the set temperature, so as to ensure the effect of the coolant during continuous use.

[0028] In a further preferred embodiment of the present utility model, a support block is fixedly installed on one side of the main body 1 of the kiln tail, and the top of the support block is fixedly connected to the bottom of the motor 9.

[0029] In this embodiment, the motor 9 can be stably installed on one side of the main body 1 of the kiln tail through the support block, so that the motor 9 can maintain good stability during use.

[0030] In a further preferred embodiment of the present utility model, a water injection pipe is fixedly installed on the top of the box body 15. A hopper is fixedly installed at the top end of the water injection pipe, and a first valve is arranged on the water injection pipe.

[0031] In this embodiment, through the use of the water injection pipe and the hopper, it is convenient for personnel to add coolant to the box body 15. When adding, the first valve needs to be opened first, and after adding, the first valve is closed again.

[0032] In a further preferred embodiment of the present utility model, a discharge pipe is fixedly installed at the bottom of the box body 15, and a second valve is arranged on the discharge pipe.

[0033] In this embodiment, through the cooperation of the discharge pipe and the second valve, it is convenient for personnel to discharge the coolant in the box body 15. When discharging, just open the second valve.

[0034] In a further preferred embodiment of the present utility model, the dust baffle 7 is inclined, and the cooling pipe 13 is made of stainless steel.

[0035] In this embodiment, the stainless steel cooling pipe 13 has good durability and corrosion resistance, will not rust during long-term use, and has a good service life.

[0036] In summary, compared with the related art, in this solution, by using the water injection pipe and the hopper, it is convenient for personnel to add coolant into the box body 15. When adding, the first valve needs to be opened first, and the hot gas inside the main body 1 of the kiln tail can be extracted through the gas suction mechanism. The extracted hot gas will be cooled by the coolant with a lower temperature, so that it can be avoided that the hot gas with a higher temperature passes through the fan 12 of the gas suction mechanism, and the service life of the fan 12 can be prevented from being shortened due to excessive temperature. The use effect is good. The dust baffle 7 can filter the hot gas entering the gas suction mechanism, so that the purity of the gas emission can be effectively improved. It can not only reduce the pollution to the inside of the gas suction mechanism, but also reduce the pollution to the environment caused by dust. The knocking mechanism can make the dust baffle 7 shake off the attached dust through rapid up and down movement, thereby improving the use performance.

[0037] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions or other adjustments to the features in the embodiments of the present invention according to the situation without creative efforts, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A rotary kiln tail structure, characterized in that: include: A kiln tail body installed on the rotary kiln, wherein the kiln tail body is provided with an exhaust port; Two cylinders are fixedly mounted on the top inner wall of the kiln tail body, and springs are fixedly mounted on the top inner walls of the two cylinders; Support rods are slidably mounted on the two cylinders, and pressure plates are fixedly mounted on the tops of the two support rods. The tops of the two pressure plates are fixedly connected to the bottoms of the two springs respectively. Dust shields fixedly mounted on two support rods for intercepting dust; A knocking mechanism mounted on the kiln tail body for knocking the dust shield; A gas suction mechanism for cooling gas is installed on the kiln tail body.

2. The rotary kiln tail structure according to claim 1, characterized in that: The knocking mechanism comprises: Rotating a rotating shaft installed on the kiln tail body; A motor is arranged at one side of the kiln tail body, and the output shaft of the motor is fixedly connected to one end of the rotating shaft; A cam fixedly mounted on the rotating shaft; An extrusion block is fixedly mounted on the dust shield plate, and the extrusion block is located above the cam.

3. The rotary kiln tail structure according to claim 1, characterized in that: The gas suction mechanism comprises: A box body for storing coolant is fixedly installed on one side of the kiln tail body, and a temperature sensor is fixedly installed on the inner wall of one side of the box body; A fan fixedly mounted on the bottom of the box; A cooling pipe fixedly mounted on the box, both ends of the cooling pipe extending to the outside of the box, one end of the cooling pipe fixedly connected to the air inlet end of the fan, an air suction hood fixedly mounted on the other end of the cooling pipe, and a bottom of the air suction hood fixedly connected to the air outlet; A refrigeration device fixedly mounted on the box; A controller is fixedly mounted on the box.

4. The rotary kiln tail structure according to claim 2, characterized in that: A support block is fixedly installed on one side of the kiln tail body, and the top of the support block is fixedly connected to the bottom of the motor.

5. The rotary kiln tail structure according to claim 3, characterized in that: A water injection pipe is fixedly installed on the top of the box body, a hopper is fixedly installed on the top of the water injection pipe, and a first valve is arranged on the water injection pipe.

6. The rotary kiln tail structure according to claim 3, characterized in that: A discharge pipe is fixedly installed at the bottom of the box body, and a second valve is arranged on the discharge pipe.

7. The rotary kiln tail structure according to claim 3, characterized in that: The dust shield is arranged obliquely, and the cooling pipe is made of stainless steel.

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