CN219607667U

CN219607667U - Rotary roasting furnace

Info

Publication number: CN219607667U
Application number: CN202321374547.9U
Authority: CN
Inventors: 周飞; 周奎; 赵奇先; 王显政; 张守聪
Original assignee: Shandong Yuxiao Zirconium &titanium Co ltd
Current assignee: Shandong Yuxiao Zirconium &titanium Co ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2023-08-29
Anticipated expiration: 2033-06-01

Abstract

The utility model relates to a rotary roasting furnace, which comprises a feeding mechanism, a hearth, a cylinder body and a discharging mechanism, wherein the cylinder body penetrates through the inner cavity of the hearth, and the feeding mechanism and the discharging mechanism are respectively connected to two ends of the cylinder body; the outer wall of the cylinder body is sleeved with a gear ring, the gear ring is in transmission connection with a riding wheel assembly arranged below the cylinder body, the riding wheel assembly is used for supporting the cylinder body and driving the cylinder body to rotate, a rotating rod and a plurality of stirring plates are arranged in the cylinder body, the width direction of the stirring plates extends along the radial direction of the cylinder body, and the length direction of the stirring plates is parallel to the axis of the cylinder body; the plurality of stirring plates are uniformly and symmetrically distributed around the axis of the cylinder; the axis coincidence of dwang and barrel, a plurality of stirring boards are close to the side of barrel axis and connect in dwang with integrated into one piece. In the roasting process requiring the participation of gas, the rotating rod and the stirring plate provided by the utility model can accelerate the gas flow in the cylinder, thereby being beneficial to the full combination of materials and gas and improving the roasting quality.

Description

Rotary roasting furnace

Technical Field

The utility model mainly relates to the technical field of roasting furnaces, in particular to a rotary roasting furnace.

Background

The rotary roasting furnace is equipment for carrying out high-temperature heating treatment on powdery or filter cake-shaped materials. Because of the advantages of safety, reliability and low operation strength, the rotary roasting furnace is widely applied to roasting materials such as catalysts, molecular sieves, kaolin, mineral powder, special adsorbents and the like. When in operation, materials are added into the cylinder, the cylinder rotates under the control of the transmission system of the riding wheel and the gear ring, and the materials are conveyed from the feeding end to the discharging end along with the rotation of the cylinder; in the process, the burner in the hearth outside the cylinder heats the cylinder, and the cylinder transfers heat to the materials in the cylinder so as to realize roasting. Particularly, the roasting process of partial materials needs gas participation, for example, the research at present discovers that in the roasting process of the molecular sieve, the steam is added to realize the hydrothermal ultra-stable treatment of the molecular sieve, so that the roasting quality of the molecular sieve can be greatly improved. However, in the process of conveying materials in the cylinder, most of the materials are concentrated at the lower part of the cylinder under the action of gravity, so that only the gas at the lower part of the cylinder can be combined, and the materials are not fully combined with the gas participating in roasting. Accordingly, the present utility model provides a rotary kiln to solve the above problems.

Disclosure of Invention

In order to solve the problems in the background art, the utility model provides a rotary roasting furnace.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the rotary roasting furnace comprises a feeding mechanism, a hearth, a cylinder body and a discharging mechanism, wherein the cylinder body penetrates through the inner cavity of the hearth, and the feeding mechanism and the discharging mechanism are respectively connected to two ends of the cylinder body; the outer wall of the cylinder body is sleeved with a gear ring, the gear ring is in transmission connection with a riding wheel assembly arranged below the cylinder body, and the riding wheel assembly is used for supporting the cylinder body and driving the cylinder body to rotate; the inside of the cylinder body is provided with a rotating rod and a plurality of stirring plates, the width of each stirring plate extends along the radial direction of the cylinder body, and the length direction of each stirring plate is parallel to the axis of the cylinder body; a plurality of the stirring plates are uniformly and symmetrically distributed around the axis of the cylinder; the rotating rod is overlapped with the axis of the cylinder, and the side ends, close to the axis of the cylinder, of the stirring plates are integrally connected with the rotating rod.

The stirring plate rotates along with the transmission rod and the cylinder body asynchronously, and in the roasting process needing gas participation, the stirring plate can accelerate the gas flow in the cylinder body, promote the gas exchange between the upper part and the lower part in the cylinder body, and is favorable for fully combining the materials concentrated at the bottom of the cylinder body with the gas in the whole cylinder body and improving the roasting quality. Furthermore, the stirring plate can promote heat exchange in the cylinder body and help the material to be fully roasted.

Preferably, the agitating plate is curved in an arc-shaped structure along a width direction thereof.

Preferably, the feeding mechanism comprises a first feeding component and a second feeding component, and the first feeding component is communicated with the cylinder body through the second feeding component; the second feeding component is positioned at the bottom of the first feeding component, and a pretreatment component is arranged between the second feeding component and the first feeding component; the pretreatment assembly comprises a shell and a crushed aggregates inner cavity surrounded by the shell, and two ends of the crushed aggregates inner cavity are respectively communicated with the first feeding assembly and the second feeding assembly; two rotary rods are symmetrically arranged in the crushed aggregates inner cavity, and the rotating shafts of the two rotary rods extend along the horizontal direction; the two rotary rods rotate relatively, and a gap exists between the two mutually adjacent side surfaces.

After the material is poured into the first feeding component, the material is accumulated on the upper part of the crushing cavity of the pretreatment component, the material at the bottom is extruded between the two rotary rods by the friction force of the two rotary rods which rotate relatively, and falls into the second feeding component from the gap between the side surfaces of the two rotary rods which are close to each other, and then is sent into the barrel. After the materials are sent into the feeding mechanism, the two rotary rods perform preliminary grinding treatment on the materials, so that the materials are prevented from caking; in addition, the material is fed into the cylinder body through the extrusion of the rotary rod, and uniform feeding can be realized.

Preferably, the inner wall of the cylinder body is provided with a shoveling plate in a protruding mode, the shoveling plate is of a spiral structure surrounding the axis of the cylinder body, and the length direction of the spiral structure is parallel to the length direction of the axis of the cylinder body; the direction of the shoveling plate encircling the axis of the cylinder body is opposite to the rotation direction of the cylinder body.

Preferably, the end of the shoveling plate, which is close to the feeding mechanism, is a shoveling plate feeding end, and the end of the cylinder body, which is connected with the feeding mechanism, is a cylinder body feeding end; along the axial direction of the cylinder body, the length of the inner wall of the cylinder body from the feeding end of the cylinder body to the feeding end of the shoveling plate gradually increases.

Preferably, a plurality of crushed material blocks are arranged on the inner wall of the cylinder in a protruding manner between the feeding end of the cylinder and the feeding end of the shoveling plate, and the crushed material blocks are uniformly distributed along the axial direction of the cylinder; the crushed aggregates are uniformly distributed along the circumference of the cylinder body, and the crushed aggregates in different crushed aggregates are distributed in a staggered way.

Preferably, the end of the shoveling plate, which is close to the discharging mechanism, is a shoveling plate discharging end, and the end of the cylinder body, which is connected with the discharging mechanism, is a cylinder body discharging end; along the axial direction of the cylinder body, the length of the inner wall of the cylinder body from the discharge end of the shoveling plate to the discharge end of the cylinder body is gradually increased.

The spiral structure of the shoveling plate can guide materials to be continuously conveyed in the cylinder body along the axial direction of the cylinder body. Further, in order to facilitate feeding, the inner wall of the feeding end of the cylinder is designed to be inclined, and after the material enters the cylinder from the second feeding mechanism, the material slides to a part provided with a shoveling plate from the feeding end of the cylinder under the action of gravity; similarly, the inner wall of the discharge end of the cylinder body is also of an inclined design, so that materials can slide out of the cylinder body and enter the discharge mechanism. Furthermore, in the process of sliding the material into the cylinder, the material is stirred and dispersed by a plurality of crushed aggregates distributed on the part at intervals in a staggered way, so that the crushing degree of the material is increased, and the material is favorably fully contacted with the gas participating in roasting.

In summary, the utility model has the following beneficial effects:

1. in the roasting process requiring the participation of gas, the rotating rod and the stirring plate can accelerate the gas flow in the cylinder, and are beneficial to fully combining the materials concentrated at the bottom of the cylinder with the gas in the whole cylinder.

2. In the utility model, the pretreatment component carries out preliminary grinding treatment on the materials, prevents the materials from caking, and simultaneously evenly feeds the materials, thereby further improving the roasting quality.

Drawings

Fig. 1 is a sectional view of a rotary kiln (agitating plate not shown) according to the present utility model.

Fig. 2 is a left side view of the cartridge (crushed material pieces not shown) of the present utility model.

Fig. 3 is a schematic view of the inside of the drum (agitating plates and rotating rods are not shown) in the present utility model.

FIG. 4 is a schematic view of the structure of the stirring plate and the rotating rod in the present utility model.

FIG. 5 is a schematic view of a stirring plate and a rotating rod according to another embodiment of the present utility model.

Reference numerals illustrate: 11. a first feed assembly; 12. a pre-processing assembly; 121. a rotary stick; 13. a second feed assembly; 2. a furnace; 3. a cylinder; 31. crushing the material blocks; 32. a shoveling plate; 33. a rotating lever; 34. an agitating plate; 41. a gear ring; 42. and the riding wheel assembly.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-5. For convenience of description hereinafter, references to "upper", "lower" are equal to the directions of upper, lower, etc. of the drawings themselves.

Example 1

Referring to fig. 1-4, the embodiment provides a rotary roasting furnace, which comprises a feeding mechanism, a hearth 2, a cylinder 3 and a discharging mechanism, wherein the cylinder 3 penetrates through the inner cavity of the hearth 2, and the feeding mechanism and the discharging mechanism are respectively connected to two ends of the cylinder 3. The outer wall of the cylinder body 3 is sleeved with a gear ring 41, the gear ring 41 is in transmission connection with a riding wheel assembly 42 arranged below the cylinder body 3, and the riding wheel assembly 42 is used for supporting the cylinder body and driving the cylinder body to rotate.

The feed mechanism comprises a first feed assembly 11 and a second feed assembly 13, the first feed assembly 11 being in communication with the barrel 3 via the second feed assembly 13. The first feeding component 11 is provided with a first feeding space, the first feeding space penetrates through the top surface and the bottom surface of the first feeding component 11 respectively, and the first feeding space is of an inverted quadrangular frustum pyramid structure.

The second feeding assembly 13 is positioned at the bottom of the first feeding assembly 11, and a second feeding space is arranged in the second feeding assembly 13; the second feeding space is communicated with the inner cavity of the cylinder body, and the bottom of the second feeding space is obliquely provided with: the end part of the second feeding space, which is far away from the cylinder, is higher than the end part of the second feeding space, which is close to the cylinder; the inclined design of the second feed space facilitates the transfer of material from the feed mechanism to the barrel.

A pretreatment assembly 12 is arranged between the first feeding assembly 11 and the second feeding assembly 13; the pretreatment assembly 12 includes a housing and a chaff cavity surrounded by the housing, a top end of the chaff cavity being in communication with the first feed space, and a bottom end of the chaff cavity being in communication with the second feed space.

Two rotary rods 121 are symmetrically arranged in the inner cavity of the crushed aggregates, and the rotating shafts of the two rotary rods 121 extend along the horizontal direction; the two rotary rods 121 rotate relatively, and a gap exists between the sides of the two rotary rods, which are close to each other.

The inner wall of the cylinder body 3 is provided with a shoveling plate 32 in a protruding mode, the shoveling plate 32 is of a spiral structure surrounding the axis of the cylinder body, and the length direction of the spiral structure is parallel to the length direction of the axis of the cylinder body; the rotation direction of the cylinder 3 is opposite to the direction of the shoveling plate 32 around the axis of the cylinder; in the present embodiment, the shoe 32 is formed in a spiral structure around the cylinder axis from left to right in a counterclockwise manner as seen from the left side, and the cylinder 3 is rotated in a clockwise direction.

The end of the shoveling plate 32 close to the feeding mechanism is a shoveling plate feeding end, and the end of the cylinder body 3 connected with the feeding mechanism is a cylinder body feeding end; along the axial direction of the cylinder body 3, the length of the inner wall of the cylinder body from the axis of the cylinder body to the feeding end of the shoveling plate gradually increases. A plurality of broken material block groups are arranged on the inner wall of the cylinder in a protruding manner between the feeding end of the cylinder and the feeding end of the shoveling plate, and the broken material block groups are uniformly distributed along the axial direction of the cylinder 3; the crushed material block combination comprises a plurality of crushed material blocks 31, the crushed material blocks 31 in the same crushed material block 31 combination are uniformly distributed along the circumferential direction of the cylinder 3, and the crushed material blocks in different crushed material block combinations are distributed in a staggered manner.

The end of the shoveling plate 32 close to the discharging mechanism is a shoveling plate discharging end, and the end of the cylinder body 3 connected with the discharging mechanism is a cylinder body discharging end; along the axial direction of the cylinder body 3, the length of the inner wall of the cylinder body from the discharge end of the shoveling plate to the discharge end of the cylinder body is gradually increased.

The inside of the cylinder 3 is provided with a rotating rod 33 and three stirring plates 34, the width of the stirring plates 34 extends along the radial direction of the cylinder 3, and the length direction of the stirring plates 34 is parallel to the axis of the cylinder 3; the three agitation plates 34 are uniformly and symmetrically distributed around the axis of the cylinder 3; the rotating rod 33 is overlapped with the axis of the cylinder 3, and the side ends of the three stirring plates 34, which are close to the axis of the cylinder, are integrally connected with the rotating rod 33; the end of the rotating rod 33 is connected with the output end of a motor, and the rotating speed of the motor driving rotating rod 33 is larger than that of the cylinder 3.

The radial length of the side end of the stirring plate 34 away from the axis of the cylinder body is smaller than the radial length of the side end of the shoveling plate 32 away from the inner wall of the cylinder body from the axis of the cylinder body 3, namely the stirring plate 34 is not blocked by the shoveling plate when rotating.

The implementation principle of the embodiment 1 is as follows:

when the material is added into the roasting furnace, the material is poured into the first feeding component 11, and the first feeding space of the first feeding component 11 is of an inverted quadrangular frustum pyramid structure and has a certain material storage function.

The material is poured into the first feeding component 11 and accumulated at the upper part of the crushing cavity of the pretreatment component 12, the material at the bottom is extruded between the two rotary rods 121 under the friction force of the two rotary rods 121, and uniformly falls into the second feeding component 13 from the gap between the side surfaces of the two rotary rods 121, which are close to each other, and then enters the barrel 3 from the second feeding space.

After the material enters the cylinder body 3 from the second feeding mechanism, the material slides to the part provided with the shoveling plate 32 from the end part of the cylinder body under the action of gravity, and in the process, the material is stirred by a plurality of broken material blocks 31 distributed alternately at intervals, so that the crushing degree of the material is further increased.

The material enters the area provided with the shoveling plate 32, and the shoveling plate 32 with a spiral structure conveys the material from the feeding end of the shoveling plate to the discharging end of the shoveling plate; at the discharge end of the shoveling plate, the material slides out of the cylinder body and enters the discharge mechanism.

Example 2

Referring to fig. 5, the present embodiment is different from embodiment 1 in that the agitating plate 34 is curved in an arc-shaped structure in the width direction thereof.

The implementation principle of the embodiment 2 is as follows:

the stirring plate 34 is designed into an arc-shaped structure, which is more beneficial to driving the gas to flow.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The rotary roasting furnace comprises a feeding mechanism, a hearth (2), a cylinder body (3) and a discharging mechanism, wherein the cylinder body (3) penetrates through an inner cavity of the hearth (2), and the feeding mechanism and the discharging mechanism are respectively connected to two ends of the cylinder body (3); the outer wall cover of barrel (3) is established ring gear (41), ring gear (41) with set up in riding wheel subassembly (42) transmission of barrel below is connected, riding wheel subassembly (42) are used for the bearing barrel (3) and drive barrel (3) rotate, its characterized in that: a rotating rod (33) and a plurality of stirring plates (34) are arranged inside the cylinder body (3), the width of each stirring plate (34) extends along the radial direction of the cylinder body (3), and the length direction of each stirring plate (34) is parallel to the axis of the cylinder body (3); a plurality of said agitation plates (34) are uniformly and symmetrically distributed around the axis of said drum (3); the rotating rod (33) is overlapped with the axis of the cylinder (3), and a plurality of stirring plates (34) are integrally connected with the rotating rod (33) near the side end of the axis of the cylinder.

2. A rotary kiln according to claim 1, wherein: the agitation plate (34) is curved in an arc-shaped configuration in the width direction thereof.

3. A rotary kiln according to claim 1, wherein: the feeding mechanism comprises a first feeding assembly (11) and a second feeding assembly (13), and the first feeding assembly (11) is communicated with the cylinder (3) through the second feeding assembly (13); the second feeding component (13) is positioned at the bottom of the first feeding component (11), and a pretreatment component (12) is arranged between the second feeding component and the first feeding component; the pretreatment assembly (12) comprises a shell and a crushed aggregates inner cavity surrounded by the shell, and two ends of the crushed aggregates inner cavity are respectively communicated with the first feeding assembly (11) and the second feeding assembly (13); two rotary rods (121) are symmetrically arranged in the crushed material inner cavity, and the rotating shafts of the two rotary rods (121) extend along the horizontal direction; the two rotary rods (121) rotate relatively, and gaps exist between the side surfaces of the two rotary rods, which are close to each other.

4. A rotary kiln according to claim 1, wherein: the inner wall of the cylinder body (3) is provided with a shoveling plate (32) in a protruding mode, the shoveling plate (32) is of a spiral structure surrounding the axis of the cylinder body, and the length direction of the spiral structure is parallel to the length direction of the axis of the cylinder body; the direction of the shoveling plate (32) surrounding the axis of the cylinder body is opposite to the rotation direction of the cylinder body (3).

5. A rotary kiln according to claim 4, wherein: the end of the shoveling plate (32) close to the feeding mechanism is a shoveling plate feeding end, and the end of the cylinder (3) connected with the feeding mechanism is a cylinder feeding end; along the axial direction of the cylinder body, the length from the inner wall of the cylinder body (3) to the axis of the cylinder body from the feeding end of the cylinder body to the feeding end of the shoveling plate is gradually increased.

6. A rotary kiln according to claim 5, wherein: a plurality of crushed material block groups are arranged on the inner wall of the cylinder (3) in a protruding manner between the feeding end of the cylinder and the feeding end of the shoveling plate, and the crushed material block groups are uniformly distributed along the axial direction of the cylinder; the crushed aggregates block combination comprises a plurality of crushed aggregates blocks (31), the crushed aggregates blocks (31) in the same crushed aggregates block combination are uniformly distributed along the circumference of the cylinder body (3), and the crushed aggregates blocks (31) in different crushed aggregates block combinations are distributed in a staggered manner.

7. A rotary kiln according to claim 6, wherein: the end part of the shoveling plate (32) close to the discharging mechanism is a shoveling plate discharging end, and the end part of the cylinder body (3) connected with the discharging mechanism is a cylinder body discharging end; along the axial direction of the cylinder body, the length of the inner wall of the cylinder body (3) from the discharge end of the shoveling plate to the discharge end of the cylinder body is gradually increased.