CN212205595U

CN212205595U - Ceramsite sintering rotary kiln

Info

Publication number: CN212205595U
Application number: CN202020944919.7U
Authority: CN
Inventors: 邵艳秋; 王彦文博; 王启春; 朱英; 王玉番; 杨轲; 邵莹莹; 李静
Original assignee: Shandong Shanke Ecological Environment Research Institute Co ltd; New Material Institute of Shandong Academy of Sciences
Current assignee: Shandong Shanke Ecological Environment Research Institute Co ltd; New Material Institute of Shandong Academy of Sciences
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2020-12-22
Anticipated expiration: 2030-05-28

Abstract

The utility model relates to a haydite preparation technical field especially relates to a haydite sintering rotary kiln, and its structure is: the inner cylinder body is positioned in the outer cylinder body, and a gap is formed between the inner cylinder body and the outer cylinder body to form a kiln body together; sealing covers are arranged at the front and rear ports of the kiln body; the inner cavity of the inner cylinder body is connected with the gap through a communicating pipe, the front end and the rear end of the kiln body are respectively provided with a mounting communicating pipe, and the induced draft fan is mounted on the communicating pipes; the feeding pipe is arranged on a sealing cover at the front end of the kiln body, and the kiln body is obliquely arranged; a sealing cover at the front end of the kiln body is provided with a ceramic particle outlet which can be opened and closed; the electric heating rod and the reticulated shell are both fixed in the inner cavity of the inner cylinder body, and the reticulated shell is positioned at the periphery of the electric heating rod; one end of the paddle is fixed on the reticulated shell; at least one circle of gear is arranged on the outer wall of the outer cylinder body along the circumferential direction of the outer cylinder body, and the driving device is meshed with the gear and used for driving the kiln body to rotate. The rotary kiln can simultaneously realize stirring and energy recycling of the ceramsite in the ceramsite sintering process, and the sintering process is cleaner.

Description

Ceramsite sintering rotary kiln

Technical Field

The utility model relates to a haydite preparation technical field especially relates to a haydite sintering rotary kiln.

Background

The information disclosed in the background of the invention is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information constitutes prior art that is already known to a person of ordinary skill in the art.

As is well known, ceramsite is ceramic particles produced by batching, granulating and sintering in a rotary kiln, has a spherical shape generally, has a smooth and hard surface, and can be used as aggregate of heat-insulating refractory materials, and can replace broken stones and pebbles in concrete. The common haydite rotary kiln is a rotary cylinder device capable of calcining materials, and generally comprises a rotary cylinder body, a supporting device with a baffle wheel, a kiln head, a kiln tail sealing device, a heating device and the like. However, the rotary kiln often has the problems that the ceramsite is heated unevenly and is easy to bond in the sintering process, the energy utilization rate needs to be further improved, and the like. In addition, the conventional method of generating heat by burning pulverized coal in a rotary kiln also has the problems of more smoke, large amount of waste gas to be treated and the like.

SUMMERY OF THE UTILITY MODEL

The problems described above are addressed. The utility model provides a haydite sintering rotary kiln, this kind of rotary kiln can realize stirring and the cyclic utilization of energy to the haydite simultaneously in haydite sintering process, and sintering process is more clean moreover. In order to achieve the above object, the technical solution of the present invention is as follows.

A haydite sintering rotary kiln comprises: outer barrel, interior barrel, sealed lid, communicating pipe, draught fan, inlet pipe, electric heating rod, net shell, paddle, gear and drive arrangement, wherein:

the inner cylinder body is positioned in the outer cylinder body, a gap is formed between the inner cylinder body and the outer cylinder body, and the outer cylinder body and the inner cylinder body are fixed together through a connecting rod arranged in the gap to form a kiln body. The front and rear ports of the kiln body are provided with sealing covers, and the kiln body can rotate relative to the sealing covers. The inner cavity of the inner cylinder body is connected with the gap through a communicating pipe, the front end and the rear end of the kiln body are respectively provided with an installation communicating pipe, and the induced draft fan is installed on the communicating pipes. The feeding pipe is arranged on a sealing cover at the front end of the kiln body, the kiln body is obliquely arranged, and one end provided with the feeding pipe is positioned at a high position; and a sealing cover at the front end of the kiln body is provided with a ceramsite outlet which can be opened and closed. The electric heating rod and the reticulated shell are both fixed in the inner cavity of the inner cylinder body, and the reticulated shell is positioned at the periphery of the electric heating rod. One end of the paddle is fixed on the reticulated shell, and the other end of the paddle extends to the inner wall of the inner cylinder body and is not in contact with the inner wall. At least one circle of gear is arranged on the outer wall of the outer cylinder body along the circumferential direction of the outer cylinder body, and the driving device is meshed with the gear and used for driving the kiln body to rotate.

Furthermore, the communicating pipe is a U-shaped pipe, one end of the communicating pipe is communicated with the inner cavity of the inner cylinder body, and the other end of the communicating pipe is communicated with the gap, so that the inner cavity of the inner cylinder body is communicated with the gap in a circulating manner.

Further, the electric heating rod and the reticulated shell are fixed on the sealing cover through fixing rods.

Furthermore, a heat insulation layer is arranged on the outer cylinder body, so that heat loss is reduced.

Furthermore, the distribution plate is arranged in the inner cavity of the inner barrel and positioned below the feeding pipe, the distribution plate is obliquely and downwards fixed on the sealing cover relative to the sealing cover, and the distribution plate is helpful for distributing the ceramsite raw material balls in the inner cavity of the inner barrel in a more dispersed manner.

Further, a plurality of runners are arranged on the distributing plate, and the runners are radial.

Furthermore, the kiln body and the sealing cover are obliquely fixed on the base through a fixing frame.

Furthermore, the inclination angle of the kiln body relative to the base is 2-8 degrees, so that the ceramic particles are gradually conveyed to the other port automatically along with the rotation of the kiln body.

Further, the driving device comprises a motor and a transmission gear, and the transmission gear is meshed with the gear; the motor drives the transmission gear to rotate, and then drives the gear and the kiln body to rotate.

Furthermore, the paddle is made of heat-resistant steel or silicon carbide so as to adapt to the high-temperature environment in the kiln body.

Furthermore, a valve for air circulation air flow is arranged on the communicating pipe.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses a set up and have gapped double-deck kiln body to through fixing communicating pipe on sealed lid, realized the recycling of the internal steam of kiln under the condition that does not influence the operation of kiln body, can reduce the heating power of electrical heating stick after heating a period like this, the energy saving. In addition, the electric heating rod is cleaner, and the pollution problem caused by using coal powder as fuel is avoided.

(2) The utility model discloses a be provided with the cloth board of radial runner and realized piling up in a department to the more even distribution of raw material ball when avoiding the feeding, the problem that bonds appears easily.

(3) The utility model discloses a paddle of setting on the net shell rotates the relative motion who forms with the help of the kiln body, and the paddle can stir the pellet along interior barrel inner wall, does not need extra paddle drive arrangement, but also helps further avoiding the problem that the pellet bonds in sintering process. Moreover, by installing the electric heating rod in the latticed shell, the distribution of components is more regular and compact while the heating function is not influenced, and conditions are provided for installing the blades.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

Fig. 1 is a front view of a ceramsite sintering rotary kiln in the embodiment of the present invention.

Fig. 2 is a sectional view of the ceramsite sintering rotary kiln in the embodiment of the present invention.

Fig. 3 is a front view of the cloth plate in the embodiment of the present invention.

The scores in the figure represent: 1-outer cylinder, 2-inner cylinder, 3-sealing cover, 4-communicating pipe, 5-induced draft fan, 6-feeding pipe, 7-electric heating rod, 8-reticulated shell, 9-paddle, 10-gear, 11-gap, 12-connecting rod, 13-fixing rod, 14-heat preservation and heat insulation layer, 15-distributing plate, 16-runner, 17-fixing frame, 18-base, 19-motor and 20-transmission gear.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

For convenience of description, the words "upper", "lower", "left" and "right" in the present application, if any, merely indicate that the device or element referred to in the present application is constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention, since they are merely intended to be oriented in the upper, lower, left and right directions of the drawings themselves, and not to limit the structure, but merely to facilitate the description of the invention and to simplify the description.

Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, for example, they may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.

As mentioned above, some conventional rotary kilns often have the problems that the ceramsite is heated unevenly during the sintering process, is easy to bond, and the energy utilization rate needs to be further improved. In addition, the conventional method of generating heat by burning pulverized coal in a rotary kiln also has the problems of more smoke, large amount of waste gas to be treated and the like. Therefore, the utility model provides a ceramsite sintering rotary kiln; the invention will now be further described with reference to the drawings and specific examples.

Referring to fig. 1 and 2, there is illustrated a ceramsite sintering rotary kiln, which mainly comprises the following components: the device comprises an outer cylinder body 1, an inner cylinder body 2, a sealing cover 3, a communicating pipe 4, an induced draft fan 5, a feeding pipe 6, an electric heating rod 7, a reticulated shell 8, a paddle 9, a gear 10 and a driving device.

The inner cylinder body 2 is sleeved in the outer cylinder body 1 and coaxially arranged with the outer cylinder body 1, the diameter of the inner cylinder body is smaller than that of the outer cylinder body 1, so that a gap 11 is formed between the inner cylinder body and the outer cylinder body, a connecting rod 12 is arranged in the gap, two ends of the connecting rod are respectively screwed with the outer wall of the inner cylinder body 2 and the inner wall of the outer cylinder body 1 together, so that a kiln body is formed together, and the inner cavity of the inner cylinder body is used as a place for preparing ceramsite by the.

The front and rear ports of the kiln body are provided with sealing covers 3, and the kiln body can rotate relative to the sealing covers 3. The sealing cover has the main functions of sealing two ports of the kiln body, simultaneously does not influence the rotation of the kiln body, and the connecting mode of the sealing cover 3 and the kiln body can refer to the traditional rotary kiln structure.

The inner cavity of the inner cylinder body 2 is connected with the gap 11 through the communicating pipe 4, the communicating pipe 4 is a U-shaped pipe, one end of the U-shaped pipe is communicated with the inner cavity of the inner cylinder body 2, and the other end of the U-shaped pipe is communicated with the gap 11, so that the inner cavity of the inner cylinder body 2 is communicated with the gap 11 in a circulating mode. All there is installation communicating pipe 4 on the preceding, the back both ends of the kiln body, and communicating pipe 4 fixes on sealed lid 3, draught fan 5 is installed on communicating pipe 4. The two groups of communicating pipes 4 enable the inner cavity of the inner cylinder body to be in circulating connection with the gap 11, so that the generated hot air can be recycled under the action of the draught fan 5, the heating power of the electric heating rod can be reduced after the electric heating rod is heated for a period of time, and energy is saved. In addition, the U-shaped communicating pipe 4 can realize the recycling of hot gas in the kiln body under the condition of not influencing the operation of the kiln body.

The feeding pipe 6 is fixedly arranged on a sealing cover 3 at the front end of the kiln body, the kiln body and the sealing cover 3 are obliquely fixed on a base 18 through a fixing frame 17, one end provided with the feeding pipe 6 is in a high position, and the inclination angle of the kiln body relative to the base 18 is 2 degrees; and a sealing cover 3 at the front end of the kiln body is provided with a ceramsite outlet which can be opened and closed. Continuously conveying raw material balls into the kiln body through a feeding pipe 6, gradually and automatically conveying the raw material balls to a ceramsite outlet along with the rotation of the kiln body in the sintering process, and discharging to obtain the ceramsite. It should be noted that the angle of inclination of the kiln body relative to the base 18 may be designed according to actual needs, for example, in some embodiments, it is selected to be 3 °, 5 °, 8 °, etc.

For the electric heating rod 7 and the reticulated shell 8, both are installed in the inner cavity of the inner cylinder 2 along the axial direction of the inner cylinder, the reticulated shell 8 is located at the periphery of the electric heating rod 7, the electric heating rod 7 and the reticulated shell 8 are both fixed on the sealing cover 3 through the fixing rod 13, in this embodiment, the fixing rod 13 adopts a silicon carbide rod, on one hand, the silicon carbide rod plays an insulating role, and on the other hand, the silicon carbide rod adapts to the high-temperature environment in the kiln body. In the embodiment, the rotary kiln adopts the electric heating rod to replace the traditional sintering mode taking coal powder and the like as fuels, so that less smoke is generated in the ceramsite preparation process, the preparation process is cleaner, and the pollution is favorably reduced. In addition, the electric heating rod is arranged in the latticed shell, so that the distribution of components is more regular and compact while the heating function is not influenced, and conditions are provided for the installation of the blades.

One end of the paddle 9 is fixed on the net shell 8, and the other end of the paddle 9 extends to the inner wall of the inner cylinder 2 and is not in contact with the inner wall. When the kiln body rotates, the blades can stir the raw material balls along the inner wall of the inner cylinder body, so that the problem that the raw material balls are bonded in the sintering process is further avoided.

Two circles of gears 10 are arranged on the outer wall of the outer cylinder body 1 along the circumferential direction of the outer cylinder body, and the driving device is meshed with the gears 10 to drive the kiln body to rotate. The driving device comprises a motor 19 and a transmission gear 20, and the transmission gear 20 is meshed with the gear 10; the motor 19 drives the transmission gear 20 to rotate, and further drives the gear 10 and the kiln body to rotate.

Further, referring to fig. 1 and 3, in other embodiments, the distributor plate 15 is disposed in the inner cavity of the inner cylinder 2 and below the feeding pipe 6, the distributor plate 15 is fixed to the sealing cover 3 obliquely downward relative to the sealing cover 3, and a plurality of flow channels 16 are disposed on the distributor plate 15, and the flow channels are radial. The radial flow channel is beneficial to more uniformly distributing raw material balls, and the problem that raw material balls are accumulated at one position during feeding and are easy to adhere is avoided.

Further, referring to fig. 2, in other embodiments, the outer cylinder 1 is further provided with a thermal insulation layer 14 to reduce heat dissipation in the kiln body. The paddle 9 is made of heat-resistant steel so as to adapt to the high-temperature environment in the kiln body.

Further, in other embodiments, a valve for the air circulation air flow rate is arranged on the communicating pipe 4. The valve can control the flow of hot gas to be circulated, and the hot gas can be discharged and further utilized, such as heating or heat medium for production industry.

Finally, it should be understood that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.

Claims

1. A haydite sintering rotary kiln is characterized by comprising: outer barrel, interior barrel, sealed lid, communicating pipe, draught fan, inlet pipe, electric heating rod, net shell, paddle, gear and drive arrangement, wherein:

the inner cylinder body is positioned in the outer cylinder body, a gap is formed between the inner cylinder body and the outer cylinder body, and the outer cylinder body and the inner cylinder body are fixed together through a connecting rod arranged in the gap to form a kiln body; sealing covers are mounted at the front end and the rear end of the kiln body, and the kiln body can rotate relative to the sealing covers;

the inner cavity of the inner cylinder body is connected with the gap through a communicating pipe, the front end and the rear end of the kiln body are respectively provided with a mounting communicating pipe, and the induced draft fan is mounted on the communicating pipes;

the feeding pipe is arranged on a sealing cover at the front end of the kiln body, the kiln body is obliquely arranged, and one end provided with the feeding pipe is positioned at a high position;

a sealing cover at the front end of the kiln body is provided with a ceramic particle outlet which can be opened and closed; the electric heating rod and the reticulated shell are both fixed in the inner cavity of the inner cylinder body, and the reticulated shell is positioned at the periphery of the electric heating rod;

one end of each paddle is fixed on the reticulated shell, and the other end of each paddle extends to the inner wall of the inner cylinder and is not in contact with the inner wall;

at least one circle of gear is arranged on the outer wall of the outer cylinder body along the circumferential direction of the outer cylinder body, and the driving device is meshed with the gear and used for driving the kiln body to rotate.

2. A ceramsite sintering rotary kiln as recited in claim 1, wherein the communicating pipe is a "U" -shaped pipe, one end of which is communicated with the inner cavity of the inner cylinder body, and the other end of which is communicated with the gap, so that the inner cavity of the inner cylinder body is in circulating communication with the gap; and a valve for air circulation air flow is arranged on the communicating pipe.

3. The ceramsite sintering rotary kiln according to claim 1, wherein the electric heating rod and the mesh shell are fixed on the sealing cover through fixing rods.

4. The ceramsite sintering rotary kiln according to claim 1, wherein a heat insulation layer is arranged on the outer barrel.

5. A ceramsite sintering rotary kiln according to claim 1, further comprising a distributing plate disposed in the inner cavity of the inner cylinder and below the feeding pipe, wherein the distributing plate is obliquely fixed on the sealing cover downwards relative to the sealing cover, and the distributing plate helps to distribute the raw ceramsite balls in the inner cavity of the inner cylinder in a more dispersed manner.

6. A ceramsite sintering rotary kiln according to claim 5, wherein a plurality of flow channels are arranged on the distributing plate, and the flow channels are radial.

7. A ceramsite sintering rotary kiln according to any one of claims 1-6, wherein the kiln body and the sealing cover are obliquely fixed on the base through a fixing frame.

8. The ceramsite sintering rotary kiln according to claim 7, wherein the inclination angle of the kiln body relative to the base is 2-8 °.

9. A ceramsite sintering rotary kiln according to any one of claims 1-6, wherein the driving device comprises a motor and a transmission gear, and the transmission gear is meshed with a gear.

10. A ceramsite sintering rotary kiln according to any one of claims 1-6, wherein the paddle is made of heat-resistant steel or silicon carbide so as to adapt to a high-temperature environment in a kiln body.