CN213480951U

CN213480951U - Energy-saving cement rotary kiln preheater

Info

Publication number: CN213480951U
Application number: CN202021502359.6U
Authority: CN
Inventors: 王占甫; 杨建辉; 卫九红
Original assignee: Henan Jinrong Cement Co ltd
Current assignee: Henan Jinrong Cement Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-06-18
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses an energy-saving cement rotary kiln preheater in the technical field of preheater, which comprises a housin, the head end that discharging pipe and rotary kiln were passed through to the bottom of casing links to each other, and the top of casing is equipped with the inlet pipe, is equipped with the cloth awl in the casing, and the cloth awl is located the inlet pipe under, and the below of cloth awl is equipped with the separation section of thick bamboo, and the outside of separation section of thick bamboo is equipped with the spiral stock guide, and the casing, form the unloading passageway between separation section of thick bamboo and the spiral stock guide, and is equipped with first gas guide hole on the separation section of thick bamboo lateral wall, and the inner chamber of separation. The spiral material guide plate arranged in the utility model can prolong the blanking time of the material and the contact time of the material and hot air, thereby improving the heat exchange rate; the utility model discloses preheat the material in the shell from bottom to top with the hot-blast of rotary kiln head end first, carry out the secondary with the hot-blast of rotary kiln tail end from inside to outside again and preheat the material, improved the decomposition rate of material greatly.

Description

Energy-saving cement rotary kiln preheater

Technical Field

The utility model relates to a pre-heater technical field, concretely relates to energy-conserving rotary cement kiln pre-heater.

Background

The lime rotary kiln preheater is a heating device which is used for heating lime at the front end of a lime rotary kiln and decomposing part of lime, and a hot air heating mode is mostly adopted. The existing preheater is mostly of a vertical structure, heat exchange is completed in the counter flow of materials and hot air, and due to the limitation of the size of the volume of the preheater, the contact time of the materials and the hot air is short, the heat exchange efficiency is low, and the material decomposition rate is low.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to an energy-saving preheater for a rotary cement kiln.

The utility model discloses the technical scheme who adopts does:

the utility model provides an energy-conserving cement rotary kiln preheater, includes the casing, the head end that discharging pipe and rotary kiln were passed through to the bottom of casing links to each other, the top of casing is equipped with the inlet pipe, be equipped with the cloth awl in the casing, the cloth awl is located the inlet pipe under, the below of cloth awl is equipped with separates a section of thick bamboo, the outside of separating a section of thick bamboo is equipped with the spiral stock guide, form the unloading passageway between casing, separation section of thick bamboo and the spiral stock guide, just be equipped with the first air guide hole that is used for communicateing separation section of thick bamboo and unloading passageway on the separation section of thick bamboo lateral wall, the inner chamber of separation section of thick bamboo passes.

Preferably, be equipped with the axis of rotation in the casing, be equipped with the rotor arm in the axis of rotation, the one end that the axis of rotation was kept away from to the rotor arm is equipped with scrapes the flitch, the top of axis of rotation upwards extends to separating a section of thick bamboo inner chamber, bottom downwardly extending and is connected with the driving motor transmission after running through the casing, the inside cavity of axis of rotation, just the bottom of axis of rotation is passed through the bearing and is connected with the air supply line rotation.

Preferably, the separation cylinder is fixedly connected with the rotating shaft.

Preferably, the spiral material guide plate is provided with a second air guide hole.

Preferably, the number of the spiral material guide plates is 3-6.

Compared with the prior art, the utility model has the advantages that:

the utility model is provided with the separating cylinder and the spiral guide plate in the shell, the material discharging time is prolonged through the spiral guide plate, the contact time between the material and hot air is prolonged, and the heat exchange rate is improved; the utility model discloses a discharging pipe is in with the hot-blast introduction casing of rotary kiln head end to material in the casing from bottom to top preheats for the first time, through the air supply line with the hot-blast introduction of rotary kiln tail end separate a section of thick bamboo in, and carry out the secondary to the material from inside to outside and preheat, can improve the decomposition rate of material greatly.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a view A-A of FIG. 1;

FIG. 3 is a schematic structural view of the present invention;

the device comprises a shell 1, a discharge pipe 2, a rotary kiln 3, a feed pipe 4, a distribution cone 5, a separation barrel 6, a spiral guide plate 7, a discharging channel 8, a first air guide hole 9, a rotating shaft 10, a rotating arm 11, a scraping plate 12, a driving motor 13, a bearing 14, an air supply pipeline 15, an air blower 16 and a second air guide hole 17.

Detailed Description

The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way. The unit module components, structures, mechanisms, sensors and other devices referred to in the following examples are all conventional and commercially available products unless otherwise specified.

Example 1: as shown in fig. 1 and 2, the preheater for the rotary cement kiln comprises a shell 1, wherein a discharge pipe 2 is arranged at the bottom end of the shell 1, the other end of the discharge pipe 2 is connected with the head end of the rotary cement kiln 3, and the discharge pipe 2 is used for guiding the preheated material in the shell 1 into the rotary cement kiln 3 and also used for guiding hot air at the head end of the rotary cement kiln 3 into the shell 1; the top end of the shell 1 is provided with a feeding pipe 4, a material distribution cone 5 is arranged in the shell 1, the material distribution cone 5 is positioned under the feeding pipe 4, a separation barrel 6 is arranged under the material distribution cone 5, the top end of the separation barrel 6 is fixedly connected with the material distribution cone 5, the bottom end of the separation barrel is closed, the side surface of the separation barrel 6 is fixedly provided with 3-6 spiral material guide plates 7, a discharging channel 8 is formed among the shell 1, the separation barrel 6 and the spiral material guide plates 7, the side wall of the separation barrel 6 is provided with a first air guide hole 9 for communicating the inner cavity of the separation barrel 6 with the discharging channel 8, after materials enter the shell 1 from the feeding pipe 4, the materials uniformly enter each discharging channel 8 under the action of the material distribution cone 5, and the materials moving downwards fully contact with hot air from bottom to top and exchange heat to complete the primary preheating; a rotating shaft 10 is further arranged inside the shell 1, a plurality of rotating arms 11 are arranged on the rotating shaft 10, a scraping plate 12 is arranged at one end, far away from the rotating shaft 10, of each rotating arm 11, the top end of each rotating shaft 10 extends upwards and extends into the inner cavity of the separating cylinder 6 after penetrating through the bottom wall of the separating cylinder 6, the bottom end of each rotating shaft 10 extends downwards and is in transmission connection with a driving motor 13 after penetrating through the shell 1, and the rotating shafts 10 drive the rotating arms 11 to rotate when rotating, so that the scraping plates 12 are driven to rotate, and preheated materials can smoothly enter the rotary kiln 3; the inside cavity of axis of rotation 10, and the one end of bearing 14 and air supply line 15 is passed through to the bottom of axis of rotation 10 rotates and is connected, and the other end of air supply line 15 links to each other with the tail end of rotary kiln 3, is equipped with air-blower 16 on the air supply line 15, and under the effect of this air-blower 16, the hot-blast entering of rotary kiln 3 tail end separates section of thick bamboo 6 inner chamber through air supply line 15, axis of rotation 10, then carries out the secondary through first air guide hole 9 from inside to outside to the material and preh.

Example 2: as shown in fig. 2 and fig. 3, the present embodiment is a further improvement based on embodiment 1, and the difference between the embodiment 1 and the energy-saving preheater for a rotary cement kiln is as follows: the separating cylinder 6 is fixedly connected with the rotating shaft 10, the spiral material guide plate 7 is provided with a second air guide hole 17, and a gap is reserved between the spiral material guide plate 17 and the shell 1 and is smaller than the size of the material.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides an energy-saving rotary cement kiln preheater, includes the casing, the head end that discharging pipe and rotary kiln were passed through to the bottom of casing links to each other, the top of casing is equipped with inlet pipe, its characterized in that: be equipped with the cloth awl in the casing, the cloth awl is located the inlet pipe under, the below of cloth awl is equipped with separates a section of thick bamboo, the outside of separating a section of thick bamboo is equipped with the spiral stock guide, form the unloading passageway between casing, the section of thick bamboo of separating and the spiral stock guide, just it is equipped with the first air guide hole that is used for communicateing a section of thick bamboo and unloading passageway to separate on the section of thick bamboo lateral wall, the inner chamber of separating a section of thick bamboo passes through the tail end of air supply line and rotary kiln and links to each.

2. The energy saving rotary cement kiln preheater as claimed in claim 1, wherein: the casing is equipped with the axis of rotation in, be equipped with the rotor arm in the axis of rotation, the one end that the axis of rotation was kept away from to the rotor arm is equipped with scrapes the flitch, the top of axis of rotation upwards extends to separating a section of thick bamboo inner chamber, bottom downwardly extending and is connected with the driving motor transmission after running through the casing, the inside cavity of axis of rotation, just the bottom of axis of rotation is passed through the bearing and is connected with the air supply line rotation.

3. An energy saving rotary cement kiln preheater as claimed in claim 2, wherein: the separation cylinder is fixedly connected with the rotating shaft.

4. An energy saving rotary cement kiln preheater according to claim 3, wherein: and the spiral material guide plate is provided with a second air guide hole.

5. An energy saving rotary cement kiln preheater according to claim 4, wherein: 3-6 spiral guide plates are provided.