Open-close type electric heating type rotary cylinder roasting furnace

Abstract

The utility model discloses an open-close type electric heating type rotary cylinder roasting furnace which comprises a cylinder body, a shell is arranged on the outer side of the cylinder body, the cylinder body and the shell are arranged in a rotating mode, and an electric heating pipe is arranged on the side, close to the cylinder body, of the shell. The outer shell is of a split structure and comprises two 90-degree shell bodies and a 180-degree shell body, and the two 90-degree shell bodies and the 180-degree shell body form a cylindrical structure which is arranged on the outer side of the barrel in a surrounding mode. One end of the barrel is connected with a transmission wheel, the transmission wheel is connected with a driving motor, and the driving motor drives the barrel to rotate; when the heating furnace body is replaced, the heating furnace body can be quickly and conveniently detached into three parts, so that modularization, integration and dispersive detachment transportation of the heating body part of the ultra-large rotary furnace are realized, the peripheral heating is more uniform, the maintenance is convenient, and the application advancement of electric heating in the large drying rotary furnace is improved.

Description

Technical Field

[0001] The utility model belongs to the field of roasting furnaces, in particular to an opening and closing electric heating rotary drum roasting furnace. Background Art

[0002] A roasting furnace is a device that heats powder or filter cake materials at high temperatures. It is also called a calcining furnace. Electric heating roasting furnaces use electricity as energy. They are mainly composed of a roasting furnace body, an electric heating system, a heat preservation furnace, and an automatic control system.

[0003] In the prior art, Chinese patent application No. 201120331813.0 discloses an electric heating rotary drum vacuum roasting furnace drum, comprising a feed inner spiral, a feed cone, a barrel, a discharge spiral, a discharge cone and a discharge inner spiral connected in sequence; the free end of the feed inner spiral is a feed port, and the free end of the discharge inner spiral is a discharge port; a push plate is provided on the inner wall of the feed cone, and a copy plate is provided on the inner wall of the barrel. The utility model also discloses an electric heating rotary drum vacuum roasting furnace, comprising a heat preservation furnace chamber, an electric heating device placed in the heat preservation furnace chamber and a furnace drum; the furnace drum is the above-mentioned electric heating rotary drum vacuum roasting furnace drum.

[0004] In the current prior art, the outer shell of the furnace body generally adopts an integrated structure, and the heating is generally set at the bottom of the furnace body for heating. The heating around the furnace body is uneven, the heating efficiency is low, and the integrated construction mode is extremely inconvenient in disassembly, transportation, and maintenance of super-large rotary furnaces. The existing technology for existing large rotary kilns needs to be improved. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an open and close electric heating rotary cylindrical roasting furnace, which at least solves one of the problems of the background technology. When replacing the heating furnace body, it can be quickly and conveniently disassembled into three parts, so that the heating body part of the super-large rotary furnace is modularized and integrated, decentralized disassembly and transportation are achieved, the circumferential heating is more uniform, and maintenance is convenient, thereby improving the advanced application of electric heating in large-scale drying rotary furnaces.

[0006] The utility model provides the following technical solutions:

[0007] An openable electric heating rotary drum roasting furnace comprises a drum, an outer shell is arranged outside the drum, the drum and the outer shell are rotatably arranged, and an electric heating pipe is arranged on a side of the outer shell close to the drum;

[0008] The housing is a split structure, including two 90° shells and one 180° shell, the two 90° shells and one 180° shell form a cylindrical structure, and are surrounded and arranged on the outside of the cylinder;

[0009] One end of the cylinder is connected with a transmission wheel, the transmission wheel is connected with a driving motor, and the driving motor drives the cylinder to rotate.

[0010] Preferably, the transmission wheel is connected to the cylinder, the transmission wheel drives the cylinder to rotate, a gap is set between the cylinder and the outer shell, and the cylinder rotates between the gap and the outer shell.

[0011] Preferably, the 90° shell is a fan-shaped structure, and the two 90° shells are arranged below the cylinder. The 180° shell is a semicircular structure, and the 180° shell is arranged directly above the cylinder. Two 90° shells and one 180° shell form a cylindrical outer shell.

[0012] Preferably, bolts are provided at the connection between the two 90° shells, and the two 90° shells are connected by bolts. Bolts are provided at the connection between the 90° shell and the 180° shell, and the butt joints of the shells are sealed with 3mm fiber paper and high-temperature adhesive.

[0013] Preferably, a plurality of electric heating tubes are arranged in a suspended circular pattern on the inner wall of the two 90° shells and one 180° shell. The electric heating tubes are supported by corundum ceramic tubes, and the corundum ceramic tubes are arranged inside the electric heating tubes. Heating electrodes are connected to both ends of the electric heating tubes, and a heating electrode shield is provided on the outside of the heating electrode. The heating electrode shield is arranged on the outside of the outer shell and connected to the outer shell.

[0014] Preferably, a plurality of support saddles are equidistantly provided at the bottom of the two 90° shells, and the support saddles are connected to the 90° shells.

[0015] Preferably, a roller is provided below the transmission wheel, and the roller is rotatably connected to the transmission wheel.

[0016] Preferably, the furnace heating adopts Shougang HRE iron-chromium-aluminum heating wire suspended circular arrangement, with a service life of more than 15 years. It will not age or peel after long-term use. In order to facilitate installation and replacement, the heating resistance wire is supported by a corundum ceramic tube, which can be easily installed from the furnace side. The corundum supporting porcelain tube is arranged inside the heating wire to avoid the conduction and ignition accidents caused by the contact between the resistance wire and the heat-resistant steel furnace tube after the accidental breakage.

[0017] In addition, when using this technical solution, firstly splice the two 90° shells of the lower half by bolts and fix them by supporting saddles, then install the cylinder with the transmission wheel on the driving motor, and the transmission wheel is placed on the roller below. During the installation process, the gap between the cylinder and the shell is rotated. After the cylinder is installed, the upper 180° shell is hoisted to the top of the cylinder, and connected with the 90° shell of the lower half by bolts, and the butt joint of the shell is sealed with 3mm fiber paper and high-temperature adhesive; and electric heating pipes are arranged in the three parts of the shell. Compared with the prior art, the three parts are heated at the same time, the heating area of ​​the cylinder is larger, the heating efficiency is higher, and the heating is more uniform. When replacing the furnace body, the two 90° shells and one 180° shell can be quickly and conveniently disassembled in three parts, so that the heating part of the super-large rotary kiln furnace realizes modular disassembly, integrated assembly, decentralized disassembly and transportation is convenient, the peripheral heating is more uniform, and the maintenance is more convenient, which improves the advanced nature of electric heating in large rotary kilns.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model discloses an opening and closing electric heating rotary cylindrical roasting furnace. When heating, three parts of the outer shell are heated at the same time, the heating area of ​​the cylinder is larger, the heating efficiency is higher, the heating is more uniform, and the heating furnace body can be quickly and conveniently disassembled in three parts when replacing the heating furnace body, so that the heating body part of the super-large rotary furnace is modularized and integrated, decentralized disassembly and transportation are achieved, the peripheral heating is more uniform, and maintenance is convenient, thereby improving the advancement of the application of electric heating in large-scale drying rotary furnaces.

[0020] The utility model discloses an open-and-close electric heating rotary drum roasting furnace. The furnace chamber heating adopts Shougang HRE iron-chromium-aluminum heating wire suspended circumferential arrangement, and the service life is more than 15 years. It will not age or peel after long-term use. In order to facilitate installation and replacement, the heating resistance wire is supported by a corundum ceramic tube, which can be conveniently installed from the furnace side. The corundum supporting porcelain tube is arranged inside the heating wire, which avoids the conduction and ignition accidents caused by the contact between the resistance wire and the heat-resistant steel furnace tube after the resistance wire is accidentally broken. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the following is a brief introduction to the drawings required for use in the implementation mode. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0024] Figure 3 It is a schematic diagram of the shell structure of the utility model. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the implementation mode of the utility model clearer, the technical solution in the implementation mode of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation mode of the utility model. Obviously, the described implementation mode is a part of the implementation mode of the utility model, not all the implementation modes. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. Example

[0027] refer to Figure 1-3 An open and close electric heating rotary drum roasting furnace comprises a drum 2, an outer shell is arranged on the outer side of the drum 2, the drum 2 and the outer shell are rotatably arranged, and an electric heating tube 3 is arranged on the side of the outer shell close to the drum 2; the outer shell is a split structure, comprising two 90° shells 5 and one 180° shell 6, the two 90° shells 5 and the one 180° shell 6 form a cylindrical structure, which is surrounded and arranged on the outer side of the drum 2; one end of the drum 2 is connected to a transmission wheel 4, the transmission wheel 4 is connected to a driving motor, and the driving motor drives the drum 2 to rotate.

[0028] The transmission wheel 4 is connected to the cylinder 2, and the transmission wheel 4 drives the cylinder 2 to rotate. A gap is set between the cylinder 2 and the outer shell, and the cylinder 2 rotates with the gap between the outer shell. The 90° shell 5 is a fan-shaped structure, and two 90° shells 5 are set below the cylinder 2. The 180° shell 6 is a semicircular structure, and the 180° shell 6 is set just above the cylinder 2. Two 90° shells 5 and one 180° shell 6 form a cylindrical outer shell. Bolts are provided at the connection of the two 90° shells 5, and the two 90° shells 5 are connected by bolts. Bolts are provided at the connection of the 90° shell 5 and the 180° shell 6, and the butt joints of the shells are sealed with 3mm fiber paper combined with high-temperature adhesive. A plurality of electric heating tubes 3 are arranged in a suspended circular pattern on the inner wall of two 90° shells 5 and one 180° shell 6. The electric heating tubes 3 are supported by corundum ceramic tubes, which are arranged inside the electric heating tubes 3. Both ends of the electric heating tubes 3 are connected to heating electrodes, and a heating electrode shield 7 is arranged outside the heating electrode. The heating electrode shield 7 is arranged outside the shell and connected to the shell. A plurality of support saddles 8 are arranged at equal distances at the bottom of the two 90° shells 5, and the support saddles 8 are connected to the 90° shells 5.

[0029] A roller 1 is provided below the driving wheel 4 , and the roller 1 is rotatably connected to the driving wheel 4 .

[0030] The furnace heating adopts Shougang HRE iron-chromium-aluminum heating wire suspended circular arrangement, with a service life of more than 15 years. It will not age or peel after long-term use. In order to facilitate installation and replacement, the heating resistance wire is supported by corundum ceramic tube, which can be easily installed from the furnace side. The corundum supporting porcelain tube is set inside the heating wire to avoid the conduction and ignition accidents caused by the contact between the resistance wire and the heat-resistant steel furnace tube after the accidental breakage.

[0031] When using this technical solution, firstly splice the two 90° shells 5 of the lower half by bolts and fix them by supporting saddle 8, then install the cylinder 2 on the driving motor with transmission wheel 4, and the transmission wheel 4 is placed on the lower roller 1. During the installation process, the cylinder 2 and the outer shell are rotated. After the cylinder 2 is installed, the upper 180° shell 6 is hoisted to the top of the cylinder 2, and connected with the lower 90° shell 5 by bolts, and the shell joint is sealed with 3mm fiber paper and high-temperature adhesive; and electric heating tubes 3 are arranged in the three parts of the shell. Compared with the prior art, the three parts are heated at the same time, the heating area of ​​the cylinder 2 is larger, the heating efficiency is higher, and the heating is more uniform. When replacing the furnace body, the two 90° shells 5 and one 180° shell 6 can be quickly and conveniently disassembled in three parts, so that the heating part of the super-large rotary kiln furnace can realize modular disassembly, integrated assembly, decentralized disassembly and transportation are convenient, the peripheral heating is more uniform, and the maintenance is more convenient, which improves the advanced nature of electric heating in large rotary kilns.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An open and close electric heating rotary drum roasting furnace, characterized in that: It comprises a cylinder (2), an outer shell is provided on the outer side of the cylinder (2), the cylinder (2) and the outer shell are rotatably arranged, and an electric heating tube (3) is provided on a side of the outer shell close to the cylinder (2); The outer shell is a split structure, comprising two 90° shells (5) and one 180° shell (6), the two 90° shells (5) and the one 180° shell (6) forming a cylindrical structure, which is surrounded and arranged on the outside of the cylinder (2); One end of the cylinder (2) is connected to a transmission wheel (4), and the transmission wheel (4) is connected to a drive motor, and the drive motor drives the cylinder (2) to rotate.

2. The open and close electric heating rotary drum roasting furnace according to claim 1, characterized in that: The transmission wheel (4) is connected to the cylinder (2), and the transmission wheel (4) drives the cylinder (2) to rotate. A gap is provided between the cylinder (2) and the outer shell, and the cylinder (2) rotates with the gap between the outer shell.

3. The open and close electric heating rotary drum roasting furnace according to claim 1, characterized in that: The 90° shell (5) is a fan-shaped structure, and two of the 90° shells (5) are arranged below the cylinder (2). The 180° shell (6) is a semicircular structure, and the 180° shell (6) is arranged directly above the cylinder (2). The two 90° shells (5) and one 180° shell (6) form a cylindrical outer shell.

4. The open and close electric heating rotary drum roasting furnace according to claim 1 or 3, characterized in that: Bolts are provided at the connection between the two 90° shells (5), and the two 90° shells (5) are connected by bolts. Bolts are provided at the connection between the 90° shell (5) and the 180° shell (6), and the butt joints of the shells are sealed with 3mm fiber paper combined with a high-temperature adhesive.

5. The open and close electric heating rotary drum roasting furnace according to claim 1, characterized in that: A plurality of electric heating tubes (3) are arranged in a suspended circular pattern on the inner walls of the two 90° shells (5) and the one 180° shell (6); the electric heating tubes (3) are supported by corundum ceramic tubes, which are arranged inside the electric heating tubes (3); heating electrodes are connected to both ends of the electric heating tubes (3); a heating electrode shield (7) is provided on the outer side of the heating electrode; the heating electrode shield (7) is arranged on the outer side of the outer shell and connected to the outer shell.

6. The open and close electric heating rotary drum roasting furnace according to any one of claims 1, 3 and 5, characterized in that: A plurality of support saddles (8) are equidistantly arranged at the bottom of the two 90° shells (5), and the support saddles (8) are connected to the 90° shells (5).

7. The open and close electric heating rotary drum roasting furnace according to claim 1, characterized in that: A roller (1) is provided below the transmission wheel (4), and the roller (1) is rotatably connected to the transmission wheel (4).

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