Rotary furnace with stirring mechanism

Abstract

The utility model discloses a rotary furnace with a stirring mechanism, which belongs to the technical field of rotary furnaces and comprises a support, an outer bin fixedly mounted at the upper end of the support, a mounting frame fixedly mounted at the left end of the outer bin, a bearing frame fixedly mounted on the mounting frame, a transmission turntable mounted on the bearing frame, and a stirring mechanism arranged on the right side of the transmission turntable. According to the rotary furnace with the turning and stirring mechanism, the stirring mechanism and the heating mechanism are additionally arranged, the stirring mechanism adopts an inclined conveying structure and a multiple turning and stirring structure, and the effects of guiding material conveying and stirring materials can be achieved; and the temperature increasing mechanism adopts a multi-section heating structure and a plurality of spraying holes, and fuel is sprayed out through the spraying holes to form uniform fuel atomization distribution, so that uniform distribution of the fuel in the furnace can be ensured, and sufficient combustion of the fuel is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kilns, in particular to a rotary kiln with a turning and stirring mechanism. Background Art

[0002] The rotary kiln is a thermal equipment for calcining, roasting or drying granular and powdered materials. As a conventional kiln type, the rotary kiln has existed for hundreds of years, but they are all large or super large, mainly used for primary rough processing of powder or mineral materials, such as in the firing and calcination of cement clinker; kaolin preparation of titanium dioxide, processing in the rare earth industry, etc. Although the output is large, they all have disadvantages such as large temperature difference, low temperature control accuracy, inability to seal and achieve precise atmosphere control, etc.

[0003] The patent document with application number CN202322159731.8 discloses a rotary furnace, which includes a rotary furnace body, the rotary furnace body is provided with a furnace mouth for materials to enter and exit, an openable furnace door is provided at the furnace mouth, a burner is provided on the furnace door, an air inlet of the burner is connected to a gas pipe, the gas pipe provides gas to the burner, and the burner sprays fire into the furnace to heat the aluminum slag placed in the furnace. The rotary furnace also includes a combustion-supporting fan, an air outlet of the combustion-supporting fan is connected to the air inlet of the burner, the combustion-supporting fan blows air to the burner to provide the burner with combustion-supporting gas and blows the flame of the burner far away to heat the aluminum slag away from the furnace door. The rotary furnace utilizes a burner to heat the aluminum slag so that the aluminum slag with a lower temperature can be melted. When the burner sprays fire, the combustion-supporting fan blows air toward the burner, which can not only provide combustion-supporting gas to the burner to ensure that the gas is fully burned in the furnace, but also blow the flame of the burner to a distance to heat the aluminum slag far away from the furnace door. Therefore, the burner has a better heating effect on the aluminum slag far away from the furnace door. Based on the search of the above patents and in combination with the rotary furnace in the prior art, it is found that when the rotary furnace is used, in the rotary furnace, the fuel often gathers in a certain area of ​​the furnace, resulting in insufficient fuel supply in other areas, thereby affecting the combustion efficiency and thermal energy utilization rate. Due to the uneven distribution of the fuel, part of the fuel cannot be fully burned in the furnace, generating exhaust gas and dust, affecting the environment. In addition, some rotary furnaces cannot be stirred during use, and workers usually drive a forklift to insert the stirring rod into the rotary furnace for stirring. Utility Model Content

[0004] The utility model aims to provide a rotary kiln with a stirring mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary kiln with a stirring mechanism, comprising a bracket, an outer bin is fixedly installed on the upper end of the bracket, a mounting frame is fixedly installed on the left end of the outer bin, a bearing frame is fixedly installed on the mounting frame, a transmission turntable is installed on the bearing frame, a stirring mechanism is arranged on the right side of the transmission turntable, a heating mechanism is arranged on the inner side of the stirring mechanism, the stirring mechanism comprises a furnace body, a driving rod, a mounting ring, a mounting column and a stirring disk, a furnace body is fixedly installed on the inner wall of the outer bin, a driving rod is arranged in the middle of the furnace body, a mounting ring is fixedly installed on the outer wall of the driving rod, a mounting column is fixedly installed on the outer wall of the mounting ring, and a stirring disk is fixedly installed on the end of the mounting column away from the mounting ring.

[0006] Optionally, the stirring mechanism further includes a rotating disk, a leakage trough, a material transfer ring, a material introduction pipe and a lower material bin, and the rotating disk is fixedly mounted on the right end of the transmission turntable.

[0007] Optionally, the driving rod is fixedly mounted in the middle of the rotating disk, and a drain groove is provided in the middle of the stirring disk.

[0008] Optionally, multiple groups of the mounting posts and windlasses are evenly mounted on the outer wall of the mounting ring with the midpoint of the mounting ring as the axis, and multiple groups of the mounting rings, mounting posts and windlasses are evenly distributed on the outer wall of the driving rod from left to right, and a material transfer ring is installed between each group of the mounting rings, mounting posts and windlasses, and the material transfer ring has a structure that is concave on the left and convex on the right.

[0009] Optionally, a material introduction pipe is fixedly installed at the right end of the furnace body, and a lower material bin is fixedly installed at the right end of the material introduction pipe.

[0010] Optionally, the temperature increasing mechanism includes a material injection funnel, a gas pipe, a first spray hole and a second spray hole, and the material injection funnel is fixedly mounted on the left end of the furnace body.

[0011] Optionally, a gas pipe is fixedly mounted on the furnace body, a first spray hole and a second spray hole are fixedly mounted on the lower end of the gas pipe, and a plurality of groups of the gas pipe, the first spray hole and the second spray hole are distributed on the furnace body from left to right.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, a stirring mechanism is provided. The inclined conveying structure and the multiple flip stirring structure of the stirring mechanism can achieve the effect of guiding the material conveying and stirring the material, so as to achieve uniform mixing of the material in the rotary kiln. This uniform mixing helps to improve the combustion efficiency and the utilization rate of thermal energy. Through the action of the stirring mechanism, the material is better mixed in the furnace, so that the fuel can be more fully in contact with oxygen, thereby improving the combustion efficiency. The stirring mechanism can make the fuel evenly distributed in the furnace, reduce the accumulation of fuel in a certain area, thereby reducing the exhaust gas and dust emissions generated by incomplete combustion, and reducing environmental pollution.

[0014] 2. In the utility model, a temperature increasing mechanism is provided. The temperature increasing mechanism adopts a multi-stage heating structure. Fuel is sprayed through multiple nozzles to form a uniform fuel atomization distribution, thereby realizing multi-stage uniform heating of the material in the furnace. This multi-stage uniform heating helps to improve the heating effect and quality of the material. Through the multi-stage heating and fuel atomization distribution of the temperature increasing mechanism, the material can be more fully heated in the furnace, thereby improving the utilization rate of thermal energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model in a three-dimensional front view;

[0016] Figure 2 It is a schematic structural diagram of the utility model in a plane front view;

[0017] Figure 3 This is a schematic diagram of the structure of the utility model when viewed from above;

[0018] Figure 4 The structure of the utility model is schematically shown in a three-dimensional cutaway view. Figure 1 ;

[0019] Figure 5 The structure of the utility model is schematically shown in a three-dimensional cutaway view. Figure 2 ;

[0020] Figure 6 For this utility model Figure 5 Schematic diagram of the three-dimensional enlarged structure at point A in the middle.

[0021] In the figure: 1. bracket; 2. outer bin; 3. mounting frame; 4. bearing frame; 5. transmission turntable; 6. stirring mechanism; 601. furnace body; 602. rotating disk; 603. driving rod; 604. mounting ring; 605. mounting column; 606. stirring plate; 607. leakage groove; 608. material transfer ring; 609. material guide pipe; 610. lower bin; 7. heating mechanism; 701. injection funnel; 702. gas pipe; 703. first spray hole; 704. second spray hole. DETAILED DESCRIPTION

[0022] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1 to 6In the embodiment of the utility model, a rotary kiln with a stirring mechanism includes a bracket 1, an outer bin 2 is fixedly installed on the upper end of the bracket 1, a mounting frame 3 is fixedly installed on the left end of the outer bin 2, a bearing frame 4 is fixedly installed on the mounting frame 3, a transmission turntable 5 is installed on the bearing frame 4, a stirring mechanism 6 is arranged on the right side of the transmission turntable 5, a heating mechanism 7 is arranged on the inner side of the stirring mechanism 6, the stirring mechanism 6 includes a furnace body 601, a driving rod 603, a mounting ring 604, a mounting column 605 and a stirring plate 606, a furnace body 601 is fixedly installed on the inner wall of the outer bin 2, a driving rod 603 is arranged in the middle of the furnace body 601, a mounting ring 604 is fixedly installed on the outer wall of the driving rod 603, a mounting column 605 is fixedly installed on the outer wall of the mounting ring 604, a stirring plate 606 is fixedly installed on the end of the mounting column 605 away from the mounting ring 604, and the stirring mechanism 6 also includes a rotating disk 602, a leakage groove 607, a material transfer ring 608, a material introduction pipe 609 and a lower material bin 610. The rotating disk 602 is fixedly installed on the right end of the transmission rotating disk 5, the driving rod 603 is fixedly installed in the middle of the rotating disk 602, the leakage groove 607 is opened in the middle of the stirring plate 606, multiple groups of mounting columns 605 and stirring plates 606 are evenly installed on the outer wall of the mounting ring 604 with the midpoint of the mounting ring 604 as the axis, and multiple groups of mounting rings 604, mounting columns 605 and stirring plates 606 are evenly distributed on the outer wall of the driving rod 603 from left to right. A material transfer ring 608 is installed between each group of mounting rings 604, mounting columns 605 and stirring plates 606, and the material transfer ring 608 has a structure with a concave left side and a convex right side. A material introduction pipe 609 is fixedly installed on the right end of the furnace body 601, and a lower material bin 610 is fixedly installed on the right end of the material introduction pipe 609;

[0026] The furnace body 601 provides a space for heating and burning materials, ensuring the uniformity of the temperature in the furnace, so that the materials can be effectively heated at a constant temperature. The rotating disk 602 is connected to the transmission rotating disk 5 and driven by the driving motor, so that the materials in the furnace body 601 can be fully mixed during the rotation process, thereby improving the combustion efficiency and the utilization rate of heat energy. The stirring disk 606 allows the materials to be fully stirred and mixed in the furnace, thereby improving the combustion efficiency and the utilization rate of heat energy. The material transfer ring 608 blocks the material from being transported to the next group of mounting rings 604, mounting columns 605 and stirring disks 606 to a certain extent, so that the material stays on one side of the previous group of material transfer rings 608 for a certain period of time, which is conducive to the heating operation of the fuel on the material.

[0027] The heating mechanism 7 includes a material injection funnel 701, a gas pipe 702, a first spray hole 703 and a second spray hole 704. The material injection funnel 701 is fixedly installed at the left end of the furnace body 601, and the gas pipe 702 is fixedly installed on the furnace body 601. The first spray hole 703 and the second spray hole 704 are fixedly installed at the lower end of the gas pipe 702. Multiple groups of gas pipes 702, first spray holes 703 and second spray holes 704 are distributed on the furnace body 601 from left to right; the material injection funnel 701 facilitates the injection of materials, the gas pipe 702 is responsible for transporting fuel into the furnace, the first spray hole 703 and the second spray hole 704 are responsible for spraying fuel to form a uniform fuel atomization distribution so that the material is fully heated in the furnace. The design of the spray hole should ensure the direction and intensity of fuel injection to improve the heating effect.

[0028] The working principle of the utility model is as follows: the rotary kiln with a turning and stirring mechanism is additionally provided with a stirring mechanism 6 and a temperature increasing mechanism 7. Before using the rotary kiln with a turning and stirring mechanism, it is necessary to pre-install a driving motor on one side of the transmission turntable 5, and drive the transmission turntable 5 to rotate by the driving motor. It is also necessary to pre-connect the gas pipe 702 with the external gas pipe. When using the rotary kiln with a turning and stirring mechanism, firstly, inject the material into the furnace body 601 through the injection funnel 701, start the driving motor to drive the transmission turntable 5 to rotate, and then drive the multiple groups of mounting rings 604, mounting columns 605 and stirring plates 606 on the driving rod 603 to rotate, and then stir the material in the furnace body 601. When the stirring plate 606 turns over the material, the material transfer ring 608 will to a certain extent block the material from being transported to the next group of mounting rings 604, mounting columns 605 and stirring plates 606, so that the material in the previous group of material transfer rings 60 8 stays on one side for a certain period of time. During this period, the fuel sprayed from the gas pipe 702, the first spray hole 703 and the second spray hole 704 can effectively heat the material; according to the above process, the material will be stirred by multiple sets of mounting rings 604, mounting columns 605 and stirring plates 606, and then heated by multiple sets of gas pipes 702, the first spray hole 703 and the second spray hole 704, so as to achieve a multi-stage uniform heating effect; in summary, the stirring mechanism 6 adopts an inclined conveying structure and a multiple flip stirring structure, which can achieve the effect of guiding the material conveying and stirring the material, and then cooperates with the rotary kiln to evenly burn the material, improve the combustion efficiency and thermal energy utilization rate, and the warming mechanism 7 adopts a multi-stage heating structure and multiple spray holes. The fuel is sprayed through the spray holes to form a uniform fuel atomization distribution, which can ensure that the fuel is evenly distributed in the furnace and achieve full combustion of the fuel.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary kiln with a stirring mechanism, comprising a support (1), an outer bin (2) being fixedly mounted on the upper end of the support (1), a mounting frame (3) being fixedly mounted on the left end of the outer bin (2), a bearing frame (4) being fixedly mounted on the mounting frame (3), and a driving turntable (5) being mounted on the bearing frame (4), characterized in that: A stirring mechanism (6) is arranged on the right side of the transmission turntable (5), and a temperature increasing mechanism (7) is arranged on the inner side of the stirring mechanism (6). The stirring mechanism (6) comprises a furnace body (601), a driving rod (603), a mounting ring (604), a mounting column (605) and a stirring plate (606). The furnace body (601) is fixedly mounted on the inner wall of the outer chamber (2), a driving rod (603) is arranged in the middle of the furnace body (601), a mounting ring (604) is fixedly mounted on the outer wall of the driving rod (603), a mounting column (605) is fixedly mounted on the outer wall of the mounting ring (604), and a stirring plate (606) is fixedly mounted on one end of the mounting column (605) away from the mounting ring (604).

2. The rotary kiln with a stirring mechanism according to claim 1, characterized in that: The stirring mechanism (6) further comprises a rotating disk (602), a leakage groove (607), a material transfer ring (608), a material introduction pipe (609) and a lower material bin (610), and the rotating disk (602) is fixedly mounted on the right end of the transmission turntable (5).

3. The rotary kiln with a stirring mechanism according to claim 1, characterized in that: The driving rod (603) is fixedly mounted in the middle of the rotating disk (602), and a drain groove (607) is provided in the middle of the stirring disk (606).

4. The rotary kiln with a stirring mechanism according to claim 1, characterized in that: A plurality of groups of the mounting posts (605) and the stirrer (606) are evenly mounted on the outer wall of the mounting ring (604) with the midpoint of the mounting ring (604) as the axis. The plurality of groups of the mounting ring (604), the mounting posts (605) and the stirrer (606) are evenly distributed on the outer wall of the driving rod (603) from left to right. A material transfer ring (608) is installed between each group of the mounting ring (604), the mounting posts (605) and the stirrer (606). The material transfer ring (608) has a structure with a concave left side and a convex right side.

5. The rotary kiln with a stirring mechanism according to claim 1, characterized in that: A material introduction pipe (609) is fixedly installed at the right end inside the furnace body (601), and a lower material bin (610) is fixedly installed at the right end of the material introduction pipe (609).

6. The rotary kiln with a stirring mechanism according to claim 1, characterized in that: The temperature increasing mechanism (7) comprises a material injection funnel (701), a gas pipe (702), a first spray hole (703) and a second spray hole (704); the material injection funnel (701) is fixedly mounted on the left end of the furnace body (601).

7. The rotary kiln with a stirring mechanism according to claim 6, characterized in that: A gas pipe (702) is fixedly mounted on the furnace body (601), and a first spray hole (703) and a second spray hole (704) are fixedly mounted at the lower end of the gas pipe (702). Multiple groups of the gas pipe (702), the first spray hole (703) and the second spray hole (704) are distributed on the furnace body (601) from left to right.

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