CN218723049U

CN218723049U - Kiln body with high thermal efficiency

Info

Publication number: CN218723049U
Application number: CN202222910954.9U
Authority: CN
Inventors: 何江; 王宝生
Original assignee: Hebei Zhongci North New Material Technology Co ltd
Current assignee: Hebei Zhongci North New Material Technology Co ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-03-24
Anticipated expiration: 2032-11-02

Abstract

The utility model discloses a high thermal efficiency kiln body relates to rotary kiln technical field. The utility model discloses a main kiln, fixed surface is connected with the inlet pipe on the main kiln, and fixed surface is connected with the hopper on the inlet pipe, and the inside fixedly connected with screening dish of hopper, fixed surface is connected with the gyration room on the main kiln, and the inside fixedly connected with ash catcher of gyration room, ash catcher are used for blockking the coal ash that the coal cinder burning produced in the main kiln so that the afterburning of coal ash. The utility model can block the incompletely burnt coal ash generated in the combustion process back to the inside of the main kiln through the blocking effect of the ash catcher fixedly connected in the rotary chamber, so that the coal ash can be combusted secondarily, and the combustion efficiency of the kiln body is improved; the coal blocks with larger volume are screened out through the screening disc, so that the coal blocks in the main kiln are rapidly and fully combusted after being supplied with oxygen through the air injected through the air inlet pipe, and the combustion efficiency of the kiln body is further improved.

Description

Kiln body with high thermal efficiency

Technical Field

The utility model belongs to the technical field of the rotary kiln, particularly, in particular to high thermal efficiency kiln body.

Background

Rotary kilns are used in the fields of building materials, mineral separation, chemistry and the like, and can be divided into cement kilns, metallurgical chemical kilns and lime kilns 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 magnetizing and roasting lean iron ore in steel plants in the metallurgical industry; 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.

The patent specification with the publication number of CN217442222U discloses a rotary kiln with high combustion efficiency, which comprises a kiln body and two air inlet pipes; the kiln head of the kiln body is provided with a kiln head cover; the two air inlet pipes are connected with the kiln head cover and used for ventilating the kiln body; the two air inlet pipes have a difference of a preset distance in the height direction, and the included angle between the two air inlet pipes and a plane perpendicular to the axis of the kiln body has a difference of a preset angle. The utility model discloses a there are some problems: the device improves the combustion efficiency of the kiln body only by changing the direction of the air inlet, the improvement effect is low, firstly, in the process of burning coal blocks by the rotary kiln, the problem of slow burning and reduction of the combustion efficiency can occur when the coal blocks are too large in volume, and the rotary kiln does not process the burnt coal; secondly, the coal cinder is in the combustion process, and this utility model is direct to be discharged the flying ash in the kiln by the air outlet, and this part flying ash has only passed through first burning, and it is not by abundant burning, and a large amount of fly ashes that do not thoroughly burn directly break away from the kiln body, lead to the combustion efficiency of rotary kiln not high.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problem, the utility model aims to provide a kiln body with high thermal efficiency.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a high thermal efficiency kiln body, includes the main kiln, fixed surface is connected with the inlet pipe on the main kiln, fixed surface is connected with the hopper on the inlet pipe, the inside fixedly connected with screening dish of hopper, fixed surface is connected with the gyration room on the main kiln, the inside fixedly connected with ash catcher of gyration room, ash catcher be used for with the coal ash that the coal cinder burning produced in the main kiln blocks so that the afterburning of coal ash.

As a further aspect of the present invention: the middle part and the lower part of one side of the main kiln are respectively and fixedly connected with two air inlet pipes, and the ports of the two air inlet pipes, which are positioned on the outer side of the main kiln, face the central position of one side of the main kiln.

As a further aspect of the present invention: the screening disc is provided with screening holes vertically and uniformly.

As a further aspect of the present invention: the ash catcher is fixedly connected to the bottom end inside the rotary chamber, and comprises a fixing frame fixedly connected with the inner wall of the rotary chamber, and a plurality of ash returning pieces are uniformly and fixedly connected to the inside of the fixing frame along the horizontal direction.

As a further aspect of the present invention: the cross section of each ash return sheet is S-shaped, and a gas passing channel is arranged between the two ash return sheets and is in a shielding state in the vertical direction.

As a further aspect of the present invention: and the upper surface of the rotary chamber is fixedly connected with an air outlet pipe.

The utility model has the advantages that:

1. the feeding pipe is fixedly connected to the upper surface of the main kiln, the hopper is fixedly connected to the upper surface of the feeding pipe, and the screening disc is fixedly connected inside the hopper, so that coal blocks with large volume are screened out in the process that workers put coal blocks into the main kiln through the hopper, the coal blocks inside the main kiln can be rapidly and fully combusted after air in different directions is injected through the two air inlet pipes, and the combustion efficiency of a kiln body is improved;

2. through the rotary chamber fixedly connected with the upper end of the main kiln and communicated with the inside of the main kiln, the ash catcher is fixedly connected with the inside of the rotary chamber, and the coal ash which is not completely combusted and is generated in the combustion process is returned to the inside of the main kiln for secondary combustion through shielding of the ash returning sheet which is uniformly and fixedly connected to the ash catcher, so that the combustion efficiency of the kiln body is further improved.

Drawings

The present invention will be further described with reference to the accompanying drawings.

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

fig. 2 is a side view of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken at A-A of FIG. 2 according to the present invention;

FIG. 4 is a half-sectional view of the ash trap of the present invention;

fig. 5 is an enlarged view of the detail B in fig. 4 according to the present invention.

In the figure: 1. a main kiln; 2. an air inlet pipe; 3. a feed pipe; 4. a hopper; 5. screening a disc; 6. a rotation chamber; 7. an ash catcher; 71. a fixing frame; 72. returning ash sheets; 8. and an air outlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 5, a high thermal efficiency kiln body, including main kiln 1, main kiln 1 one side fixed connection has two intake pipes 2, two intake pipes 2 are in lower part and middle part one side of main kiln 1 respectively, the port that two intake pipes 2 are located the main kiln 1 outside all towards the central point of its place main kiln 1 side, it is after pouring into calcination with the wind into, the air is at first contact inner wall and bottom surface department inside main kiln 1 respectively, the air current is through bounce-back, form horizontal and vertical to spiral and collide each other, make the air current of main kiln 1 inside obtain intensive mixing, make coal cinder everywhere in the inside kiln chamber of main kiln 1 all obtain the oxygen supply, thereby improve combustion efficiency.

The feeding pipe 3 is fixedly connected to one side of the upper surface of the main kiln 1, the hopper 4 is fixedly connected to the upper surface of the feeding pipe 3, the screening disc 5 is fixedly connected to the interior of the hopper 4, screening holes which are uniformly distributed are formed in the screening disc 5, when workers add coal blocks into a kiln chamber in the main kiln 1, the coal blocks which are large in size and cannot be rapidly and sufficiently combusted cannot pass through the screening holes in the screening disc 5, the coal blocks which are small in size have the characteristic of rapid and sufficient combustion, and the part of the coal blocks enter the kiln chamber through the feeding pipe 3 through the screening holes in the screening disc 5; it should be noted that a gate (not shown) is installed adjacent to the connection of the feeding pipe 3 and the main kiln 1, and the gate is closed after the coal is added.

A rotary chamber 6 is arranged on one side of the upper surface of the main kiln 1, an ash catcher 7 is fixedly connected inside the rotary chamber 6, a fixing frame 71 is arranged on the ash catcher 7 along the edge, a large number of ash returning sheets 72 are uniformly and fixedly connected on the inner wall of the fixing frame 71 along the side edge, the sections of the ash returning sheets 72 are S-shaped, an air passage between two adjacent ash returning sheets 72 is in a shielding state in the vertical direction (see figure 5), and an air outlet pipe 8 is fixedly connected on the upper surface of the rotary chamber 6; the coal briquette falling into the kiln chamber is burnt after air is injected into the air inlet pipe 2, small particle coal ash peeled off from the coal briquette in the burning process is brought to the ash catcher 7 by hot airflow formed by burning, the time of the part of coal ash is short in the rising process, and the part of coal ash is not fully burnt, when the part of coal ash passes through the ash returning sheets 72 of the ash catcher 7, because air passing channels between the ash returning sheets 72 are vertically shielded, the part of coal ash which is not fully burnt falls back into the kiln chamber for secondary combustion because of certain weight per se after being blocked by the ash returning sheets 72, and the fly ash with full burning and light weight is discharged through the air passing channels between the ash returning sheets 72 by the air outlet pipe 8.

The utility model discloses a theory of operation:

the working personnel firstly open the gate between the feeding pipe 3 and the main kiln 1, the operation of feeding coal blocks into the kiln chamber inside the main kiln 1 is carried out through the hopper 4, the coal blocks pass through the screening disc 5 fixedly connected inside the hopper 4, the coal blocks with larger size are screened and retained through the screening disc 5, after the cleaning, the coal blocks are continuously added until reaching a preset amount, the working personnel then close the gate to start to operate the rotary kiln, in the operation process, air is blown into the main kiln 1 through the two air inlet pipes 2, the air injected into the kiln chamber from the two air inlet pipes 2 in different directions forms spiral convection until the air is filled in the whole space inside the main kiln 1, the coal blocks are rapidly combusted after obtaining sufficient oxygen, hot air flow in the combustion process brings part of the coal ash which is not fully combusted to the rotary chamber 6, the part of the coal ash in the ash catcher 7 fixedly connected to the bottom of the rotary chamber 6 blocks the part of the coal ash to be secondarily combusted in the kiln chamber, the fly ash which is fully combusted is discharged out of the main kiln 1 through the air outlet pipe 8 on the rotary chamber 6, and the full combustion process of the rotary kiln is completed.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. The equivalent changes and improvements made according to the application scope of the present invention should be still included in the patent coverage of the present invention.

Claims

1. The utility model provides a high thermal efficiency kiln body, includes main kiln (1), fixed surface is connected with inlet pipe (3) on main kiln (1), fixed surface is connected with hopper (4) on inlet pipe (3), its characterized in that, hopper (4) inside fixedly connected with screening dish (5), fixed surface is connected with gyration chamber (6) on main kiln (1), gyration chamber (6) inside fixedly connected with catches ash ware (7), catch ash ware (7) be used for with the coal ash that the coal cinder burning produced blocks so that the postcombustion of coal ash.

2. A kiln body with high thermal efficiency according to claim 1, characterized in that two air inlet pipes (2) are fixedly connected to the middle and lower part of one side of the main kiln (1), and the ports of the two air inlet pipes (2) located outside the main kiln (1) are both towards the center of one side of the main kiln (1).

3. A kiln body with high thermal efficiency according to claim 1, characterized in that the screening plates (5) are provided with screening holes uniformly in the vertical direction.

4. A high thermal efficiency kiln body according to claim 1, characterized in that the ash catcher (7) is fixedly connected to the bottom end inside the rotary chamber (6), the ash catcher (7) comprises a fixed frame (71) fixedly connected to the inner wall of the rotary chamber (6), and a plurality of ash return sheets (72) are uniformly and fixedly connected to the inside of the fixed frame (71) along the horizontal direction.

5. A kiln body with high thermal efficiency as claimed in claim 4, characterized in that the section of the ash returning sheet (72) is S-shaped, and a gas passing channel is arranged between the two ash returning sheets (72), and the gas passing channel is in a shielding state in the vertical direction.

6. A kiln body with high thermal efficiency according to claim 1, characterized in that the upper surface of the rotary chamber (6) is fixedly connected with an air outlet pipe (8).