CN115751969A - Sectional type cement calcining device and using method - Google Patents
Sectional type cement calcining device and using method Download PDFInfo
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- CN115751969A CN115751969A CN202211525658.5A CN202211525658A CN115751969A CN 115751969 A CN115751969 A CN 115751969A CN 202211525658 A CN202211525658 A CN 202211525658A CN 115751969 A CN115751969 A CN 115751969A
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Abstract
The invention discloses a sectional type cement calcining device and a using method thereof, and relates to the technical field of cement production. The invention comprises a frame, a calcining furnace, a clinker cooling cylinder, a primary raw material preheating cylinder, a material distributing component and a sealing cover; the material distributing assembly comprises a rotating shaft; a raw material feeding pipe is arranged at the top in the calcining furnace; the end part of the raw material feeding pipe is fixedly connected with a secondary raw material preheating box; an exhaust fan is arranged in the air pipe; an L-shaped pipe is arranged on the side surface of the air collecting chamber; the L-shaped pipe is respectively provided with a primary preheating pipe and a secondary preheating pipe between the primary raw material preheating cylinder and the secondary raw material preheating box in sequence. The controller controls the servo motor on the peripheral side of the raw material feeding pipe and positioned right below the shaft hole to start and stop periodically, the material distributing assembly is driven to rotate periodically and intermittently, raw materials preheated in the first stage are sequentially fed into the material distributing barrels, the segmented quantitative feeding of the raw materials is realized, the quantity of the raw materials entering the calcining furnace each time is kept consistent, and the quality of clinker calcined by the calcining furnace is improved.
Description
Technical Field
The invention belongs to the field of cement production, and particularly relates to a sectional type cement calcining device and a using method thereof.
Background
Cement: a powdered hydraulic inorganic cementitious material. The production process includes crushing limestone and clay as main material, compounding, grinding to obtain raw material, calcining in cement kiln to obtain clinker, and grinding the clinker with gypsum.
Through the retrieval, a raw material calcining device for cement manufacture with publication number CN1 11189319A, which comprises a frame, the upper end of frame is provided with the rotary kiln, the front end of rotary kiln is connected with preheating cylinder, and the rear end of rotary kiln is connected with the cooling cylinder, the upper end of cooling cylinder is provided with the extraction opening, preheating cylinder's one end intercommunication has the preheating cabinet, be provided with back liquid pipe between preheating cylinder's one end side and the one end side of cooling cylinder, the middle part of back liquid pipe is provided with the compression refrigerator, be provided with the conveyer pipe between preheating cylinder's one end another side and the other end side of cooling cylinder, the one end intercommunication of extraction opening has the exhaust tube. When the raw materials are calcined and then become high-temperature clinker, the high temperature is generated for full recycling, and the raw materials are fully preheated by utilizing the recycled high-temperature heat, so that the calcining efficiency is improved, the waste of resources is avoided, and the high-efficiency recycling of the heat can be realized.
However, the device directly puts the raw meal into the preheating tank through the feed inlet for preheating, and the raw meal entering the preheating tank is easy to accumulate, so that the raw meal entering the preheating tank is unevenly preheated; meanwhile, the device can not ensure that the raw material amount entering the preheating tank every time is the same, so that the raw material amount entering the rotary kiln every time is the same, the raw material accumulation degree inside the rotary kiln is inconsistent, and the quality level of the clinker calcined by the rotary kiln is uneven.
Disclosure of Invention
The invention aims to provide a sectional type cement calcining device, which controls a servo motor on the peripheral side of a raw material feeding pipe and positioned right below a shaft hole to start and stop periodically through a controller, drives a material distributing assembly to rotate periodically and intermittently, and sequentially feeds raw materials preheated by one stage into each component charging barrel, so that sectional and quantitative feeding of the raw materials is realized, the quantity of the raw materials entering a calcining furnace each time is ensured to be consistent, and the quality of clinker calcined by the calcining furnace is improved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a sectional cement calcining device, which comprises a frame, a calcining furnace and a clinker cooling cylinder; the calcining furnace and the clinker cooling cylinder are fixedly arranged on the side surface of the supporting rack from top to bottom in sequence; further comprising: the primary raw material preheating cylinder is fixedly arranged on the side surface of the supporting rack and is positioned right above the calcining furnace; a raw material discharge pipe is arranged on the inner bottom surface of the primary raw material preheating cylinder; the material distributing assembly comprises a rotating shaft; a raw material feeding pipe is arranged at the top in the calcining furnace; the end part of the raw material feeding pipe is fixedly connected with a secondary raw material preheating box; the inner bottom surface of the secondary raw material preheating box is provided with a shaft hole; the rotating shaft is in rotating fit with the shaft hole; a clinker discharging pipe is arranged on the inner bottom surface of the calcining furnace; an air pipe is arranged on the peripheral side surface of the clinker discharging pipe; an exhaust fan is arranged in the air pipe; the end part of the air pipe is fixedly connected with an air collecting chamber; an L-shaped pipe is arranged on the side surface of the air collecting chamber; a primary preheating pipe and a secondary preheating pipe are sequentially arranged between the L-shaped pipe and the primary raw material preheating cylinder and between the L-shaped pipe and the secondary raw material preheating box respectively; the surface of the sealing cover is provided with a material conveying pipe in a penetrating way; the sealing cover is fixedly arranged at the top of the secondary raw material preheating box through a fastening bolt; the conveying pipe is fixedly connected with the raw material discharging pipe through a connecting flange.
Furthermore, a controller is fixedly arranged on the side surface of the supporting rack; servo motors are fixedly arranged on the peripheral side of the raw material feeding pipe, at the position right below the shaft hole, at the end part of the primary raw material preheating cylinder, at the end part of the calcining furnace and at the end part of the clinker cooling cylinder; the output end of the controller is electrically connected with each group of servo motors respectively; conveying flood screws are rotatably arranged in the primary raw material preheating cylinder, the calcining furnace and the clinker cooling cylinder; and each conveying flood dragon is fixedly connected with the corresponding output shaft of the servo motor.
Furthermore, the output shaft of the servo motor positioned on the peripheral side of the raw material feeding pipe and right below the shaft hole is fixedly connected with the rotating shaft; the end part of the rotating shaft is fixedly connected with a rotating plate; the side surface of the rotating plate is circumferentially distributed in an array manner and fixedly connected with material distributing barrels.
Furthermore, a conical raw material placing box is arranged at the top in the primary raw material preheating cylinder; a spiral gas transmission coil is arranged in the primary raw material preheating cylinder; one end of the spiral gas transmission coil pipe is connected with the primary preheating pipe, and the other end of the spiral gas transmission coil pipe is provided with an exhaust pipe.
Furthermore, a plurality of power generation parts penetrate through the inner wall of the air collection chamber; the power generation element includes: a plurality of P-type semiconductors and N-type semiconductors arranged in parallel with each other; the hot end faces are arranged in the air collecting chamber; the cold end surface is arranged outside the air collecting chamber; the side surface of the cold end surface is uniformly provided with heat dissipation grooves; the end parts of the adjacent P-type semiconductors and N-type semiconductors are fixedly connected through a hot end face; and the other end parts of the P-type semiconductor and the N-type semiconductor are fixedly connected through a cold end face.
Furthermore, welding points are welded at the joints of the ends of the P-type semiconductor and the N-type semiconductor and the cold end surface; a flow deflector is electrically connected between the adjacent welding points; the two welding points at the outermost side are electrically connected with a positive electrode lead-out wire and a negative electrode lead-out wire in sequence; a spiral electric heating wire is arranged in the secondary raw material preheating box; the positive electrode outgoing line and the negative electrode outgoing line are electrically connected through the spiral electric heating wire.
Furthermore, the inner wall of the raw material feeding pipe is provided with guide baffles in a staggered manner from top to bottom at a certain inclination angle.
Furthermore, connecting rings are symmetrically and fixedly connected to the inner wall of the clinker discharging pipe at two sides of the air pipe; a dust removal cloth bag is arranged between the two connecting rings; two ends of the dust removal cloth bag are provided with openings, and a filter cavity is formed between the dust removal cloth bag and the inner wall of the clinker discharge pipe.
Furthermore, a spiral refrigerating fluid circulating pipe is arranged inside the clinker cooling cylinder.
The use method of the sectional type cement calcining device comprises the following steps:
SS01 controls and starts the servomotor on the first-level raw meal preheating cylinder through the controller, drive the corresponding conveying auger to entangle and transmit, put the raw meal in the case to the raw meal discharging pipe of the toper raw meal, in this process, the exhaust fan sucks some high-temperature air in the calciner into the wind-collecting chamber and send into the spiral air conveying coil pipe and discharge from the blast pipe through the first-level preheating pipe, carry on the heat exchange with the raw meal conveyed inside the first-level raw meal preheating cylinder, realize the first-level preheating of the raw meal;
SS02 controls the servo motor located under the shaft hole on the peripheral side of the raw material feeding pipe to periodically start and stop through the controller, drives the material distributing component to periodically and intermittently rotate, and the raw materials preheated by the first-stage preheating pipe are sequentially fed into the material distributing barrels of each component;
hot air in the SS03 air collecting chamber heats the hot end face, the temperature difference between the hot end face and the cold end face is improved, and due to the fact that the P-type semiconductor and the N-type semiconductor are high in heat sensitivity, positive charges are generated on the surfaces of the P-type semiconductor and the N-type semiconductor respectively, electric energy is transmitted out through the positive electrode outgoing line and the negative electrode outgoing line, a power supply is provided for the spiral electric heating wire in the secondary raw material preheating chamber, and the secondary separation preheating effect of the raw materials is further improved;
the raw materials of SS04 after two-stage separate preheating fall into the calcining furnace through the raw material feeding pipe in a subsection manner for calcining, and are conveyed into a clinker cooling cylinder by corresponding conveying screw conveyer;
SS05 clinker is separated by corresponding conveying screw conveyers in the cooling cylinder in a segmented manner, and is cooled by a spiral refrigerating fluid circulating pipe.
The invention has the following beneficial effects:
1. according to the invention, part of high-temperature air in the calcining furnace is sucked into the air collecting chamber through the exhaust fan, is sent into the spiral air conveying coil pipe through the primary preheating pipe and is discharged from the exhaust pipe, and is subjected to heat exchange with the raw material conveyed inside the primary raw material preheating cylinder, so that the primary preheating of the raw material is realized, the calcining efficiency is improved, the waste of resources is avoided, and meanwhile, the high-efficiency recycling of heat can be realized.
2. The invention realizes the two-stage separate preheating of the raw materials by feeding the hot air in the two-stage preheating pipe into the two-stage raw material preheating box to heat the raw materials in the component material barrels, thereby further improving the calcining efficiency.
3. The hot end surface is heated by hot air in the air collecting chamber, so that the temperature difference between the hot end surface and the cold end surface is increased, and due to high heat sensitivity of the P-type semiconductor and the N-type semiconductor, the surfaces of the P-type semiconductor and the N-type semiconductor respectively generate plus and minus charges, and then electric energy is transmitted out by the anode outgoing line and the cathode outgoing line, so that a power supply is provided for the spiral electric heating wire in the secondary raw material preheating tank, the secondary separation preheating effect of the raw materials is improved, and the calcining efficiency is further improved.
4. The controller controls the servo motor on the peripheral side of the raw material feeding pipe and positioned right below the shaft hole to start and stop periodically, the material distributing assembly is driven to rotate periodically and intermittently, raw materials preheated in the first stage are sequentially fed into the material distributing barrels, the segmented quantitative feeding of the raw materials is realized, the quantity of the raw materials entering the calcining furnace each time is kept consistent, and the quality of clinker calcined by the calcining furnace is improved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a sectional type cement calcining apparatus according to the present invention.
FIG. 2 is a schematic view of another angle of the sectional type cement calcining device of the present invention.
FIG. 3 is a schematic diagram of a rear view of a sectional type cement calcining apparatus according to the present invention.
Fig. 4 is an enlarged view of the structure at a in fig. 1 according to the present invention.
FIG. 5 is an enlarged view of the structure at B of FIG. 1 according to the present invention.
Fig. 6 is a schematic structural view of the material distributing assembly of the present invention.
Fig. 7 is a schematic structural view of the sealing cap of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-support frame, 2-calcining furnace, 3-clinker cooling cylinder, 4-primary raw meal preheating cylinder, 5-raw meal discharging pipe, 6-material distributing component, 7-rotating shaft, 8-raw meal feeding pipe, 9-secondary raw meal preheating box, 10-shaft hole, 11-clinker discharging pipe, 12-air pipe, 13-exhaust fan, 14-air collecting chamber, 15-L-shaped pipe, 16-primary preheating pipe, 17-secondary preheating pipe, 18-sealing cover, 19-material conveying pipe, 20-controller, 21-servo motor, 22-conveying screw, 23-conical raw meal placing box, 24-spiral air conveying coil, 25-exhaust pipe, 26-power generating piece, 27-P type semiconductor, 28-N type semiconductor, 29-hot end face, 30-cold end face, 31-heat dissipation groove, 32-welding point, 33-diversion sheet, 34-positive pole outgoing line, 35-negative pole, 36-spiral electric heating wire, 37-guide baffle, 38-connecting ring, 39-dust removal cloth bag, 40-filtering cavity, 41-spiral liquid diversion plate, 41-cooling plate, 42-refrigeration barrel, and 42-material distributing barrel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention is a staged cement calcining apparatus, which comprises a support frame 1, a calciner 2, a clinker cooling cylinder 3, a primary raw material preheating cylinder 4, a material distributing component 6 and a sealing cover 18; the calcining furnace 2 and the clinker cooling cylinder 3 are fixedly arranged on the side surface of the supporting frame 1 from top to bottom in sequence; the primary raw material preheating cylinder 4 is fixedly arranged on the side surface of the support frame 1 and is positioned right above the calcining furnace 2; a raw material discharge pipe 5 is arranged on the inner bottom surface of the primary raw material preheating barrel 4; the material distributing assembly 6 comprises a rotating shaft 7; a raw material feeding pipe 8 is arranged at the top in the calcining furnace 2; the end part of the raw material feeding pipe 8 is fixedly connected with a secondary raw material preheating box 9; the inner bottom surface of the secondary raw material preheating box 9 is provided with a shaft hole 10; the rotating shaft 7 is in rotating fit with the shaft hole 10; a clinker discharging pipe 11 is arranged on the inner bottom surface of the calcining furnace 2; an air pipe 12 is arranged on the peripheral side surface of the clinker discharging pipe 11; an exhaust fan 13 is arranged in the air pipe 12; the end part of the air pipe 12 is fixedly connected with an air collecting chamber 14; an L-shaped pipe 15 is arranged on the side surface of the air collection chamber 14; a primary preheating pipe 16 and a secondary preheating pipe 17 are sequentially arranged between the L-shaped pipe 15 and the primary raw material preheating cylinder 4 and the secondary raw material preheating box 9 respectively; a feed delivery pipe 19 penetrates through the surface of the sealing cover 18; the sealing cover 18 is fixedly arranged at the top of the secondary raw material preheating box 9 through a fastening bolt; the material conveying pipe 19 is fixedly connected with the raw material discharging pipe 5 through a connecting flange.
Part of high-temperature air in the calcining furnace 2 is sucked into the air collecting chamber 14 through the exhaust fan 13, is sent into the spiral air conveying coil 24 through the primary preheating pipe 16 and is discharged from the exhaust pipe 25, and exchanges heat with the raw materials conveyed inside the primary raw material preheating cylinder 4 to realize primary preheating of the raw materials; the hot air in the secondary preheating pipe 17 is sent into the secondary raw material preheating box 9 to heat the raw materials in the component material barrels 43, so that secondary separated preheating of the raw materials is realized, and the calcining efficiency is further improved; the power generation element 26 supplies power to the spiral electric heating wire 36 in the secondary raw material preheating box 9, so that the secondary separation preheating effect of the raw materials is improved, and the calcining efficiency is further improved.
Wherein, the side surface of the supporting frame 1 is fixedly provided with a controller 20; servo motors 21 are fixedly arranged on the peripheral side surface of the raw material feeding pipe 8, which is positioned right below the shaft hole 10, on the end part of the primary raw material preheating cylinder 4, on the end part of the calcining furnace 2 and on the end part of the clinker cooling cylinder 3; the output end of the controller 20 is electrically connected with each group of servo motors 21 respectively; conveying flood screws 22 are rotatably arranged in the primary raw material preheating cylinder 4, the calcining furnace 2 and the clinker cooling cylinder 3; each conveying auger 22 is fixedly connected with the output shaft of the corresponding servo motor 21.
After the quantitative feeding of the material distributing assembly 6 for one period is completed, the conveying screw 22 in the calciner 2 is just filled with the calcined raw material, so that the calcination time of the raw material fed into each component material cylinder 43 in the calciner 2 is kept consistent.
Wherein, the output shaft of a servo motor 21 positioned at the lower part of the shaft hole 10 on the peripheral side surface of the raw material feeding pipe 8 is fixedly connected with the rotating shaft 7; the end part of the rotating shaft 7 is fixedly connected with a rotating plate 42; the circumferential side surface of the rotating plate 42 is distributed and fixedly connected with the material distributing barrels 43 in a circumferential array.
The servo motor 21 on the peripheral side of the raw material feeding pipe 8 under the shaft hole 10 is periodically controlled by the controller 20 to start and stop, so that the rotating plate 42 is driven to intermittently rotate, the component material cylinders 43 are sequentially aligned with the material conveying pipe 19, and the staged quantitative feeding of raw materials is realized.
Wherein, the top in the first-stage raw material preheating cylinder 4 is provided with a conical raw material placing box 23; a spiral gas transmission coil pipe 24 is arranged in the primary raw material preheating cylinder 4; one end of the spiral gas transmission coil 24 is connected with the primary preheating pipe 16, and the other end thereof is provided with an exhaust pipe 25.
Raw materials are put into a conical raw material placing box 23 and are conveyed through a conveying flood dragon 22 in the primary raw material preheating cylinder 4; the high-temperature flue gas in the air collection chamber 14 is sent into a spiral gas transmission coil 24 through a primary preheating pipe 16 to preheat the raw material in the primary raw material preheating cylinder 4, and the high-temperature flue gas after heat exchange is discharged through an exhaust pipe 25.
Wherein, a plurality of power generation pieces 26 are arranged on the inner wall of the air collection chamber 14 in a penetrating way; the power generating element 26 comprises a plurality of P-type semiconductors 27 and N-type semiconductors 28 which are arranged in parallel, a plurality of hot end surfaces 29 and a plurality of cold end surfaces 30; the cold end face 30 is arranged outside the air collection chamber 14; the side surface of the cold end surface 30 is uniformly provided with heat dissipation grooves 31; the ends of the adjacent P-type semiconductor 27 and the N-type semiconductor 28 are fixedly connected through a hot end face 29; the other end portions of the P-type semiconductor 27 and the N-type semiconductor 28 are fixedly connected through a cold end face 30; welding points 32 are welded at the joints of the ends of the P-type semiconductor 27 and the N-type semiconductor 28 and the cold end surface 30; a flow deflector 33 is electrically connected between the adjacent welding points 32; the two outermost welding points 32 are electrically connected with a positive electrode lead wire 34 and a negative electrode lead wire 35 in sequence; a spiral electric heating wire 36 is arranged inside the secondary raw material preheating box 9; the positive electrode lead wire 34 and the negative electrode lead wire 35 are electrically connected by a spiral electric heating wire 36.
Each group of hot end surfaces 29 arranged in the air collection chamber 14 are heated by flowing high-temperature flue gas, the cold end surfaces 30 are arranged in the outside air, and the cooling of the cold end surfaces 30 is improved and the temperature difference between the hot end surfaces 29 and the cold end surfaces 30 is enlarged through the arrangement of the heat dissipation grooves 31; the P-type semiconductor 27 and the N-type semiconductor 28 are connected in series in a conductive mode, the structure is compact, waste heat is utilized to the maximum degree for power generation, the number of the power generation components 26 is not limited, the power generation components can be installed on multiple sides of the air collection chamber 14, when high-temperature flue gas fed through the air pipe 12 flows through the surfaces of the P-type semiconductor 27 and the N-type semiconductor 28, due to the fact that the semiconductors are high in heat sensitivity, the surfaces of the P-type semiconductor 27 and the N-type semiconductor generate +/-charges respectively, electric energy is transmitted out through the flow deflector 33, and the spiral electric heating wire 36 is electrically connected with the anode outgoing line 34 and the cathode outgoing line 35 to provide power for the spiral electric heating wire 36, energy is saved, environment is protected, and the preheating effect is further improved.
Wherein, the inner wall of the raw material feeding pipe 8 is provided with guide baffles 37 in a staggered way from top to bottom at a certain inclination angle.
The guide baffles 37 are arranged on the inner wall of the raw material feeding pipe 8 in a staggered manner, so that excessive raw materials are prevented from being thrown into the calcining furnace 2 together, and the calcining effect of the calcining furnace 2 is improved.
Wherein, the inner wall of the clinker discharging pipe 11 is symmetrically and fixedly connected with connecting rings 38 at two sides of the air pipe 12; a dust removal cloth bag 39 is arranged between the two connecting rings 38; the two ends of the dust removing cloth bag 39 are arranged as openings, and a filter cavity 40 is formed between the dust removing cloth bag and the inner wall of the clinker discharging pipe 11.
A filter cavity 40 is formed between the dust removing cloth bag 39 and the inner wall of the clinker discharging pipe 11, so that when the exhaust fan 13 performs air exhaust, clinker is blocked by the dust removing cloth bag 39, high-temperature hot air is exhausted into the air inlet pipe 12 through the filter cavity 40, and the clinker is prevented from being exhausted into the air collecting chamber 14 together.
Wherein, a spiral refrigerating fluid circulating pipe 41 is arranged inside the clinker cooling cylinder 3.
The spiral refrigerating fluid circulating pipe 41 is connected with an external refrigerating device to cool the clinker in the clinker cooling cylinder 3.
The use method of the sectional cement calcining device comprises the following steps:
SS01 controls and starts the servomotor 21 on the first-level raw meal preheating cylinder 4 through the controller 20, drive the corresponding conveying dragon hinge 22 to transmit, place the raw meal in the case 23 to transport the toper raw meal to the raw meal discharging pipe 5, in this process, the exhaust fan 13 sucks some high-temperature air in the calcining furnace 2 into the air collecting chamber 14 and send into the spiral air conveying coil 24 and discharge from the blast pipe 25 through the first-level preheating pipe 16, carry on the heat exchange with the raw meal conveyed inside the first-level raw meal preheating cylinder 4, realize the first-level preheating of the raw meal;
SS02 controls a servo motor 21 on the circumferential side of a raw material feeding pipe 8 and located right below a shaft hole 10 to start and stop periodically through a controller 20, drives a material distributing assembly 6 to rotate periodically and intermittently, raw materials preheated by primary preheating are sequentially fed into each component charging barrel 43, and in the process, hot air in a secondary preheating pipe 17 is fed into a secondary raw material preheating box 9 to heat the raw materials in each component charging barrel 43, so that secondary separated preheating of the raw materials is realized;
the hot air in the SS03 air collecting chamber 14 heats the hot end face 29, so that the temperature difference between the hot end face 29 and the cold end face 30 is increased, due to the high heat sensitivity of the P-type semiconductor 27 and the N-type semiconductor 28, the surfaces of the P-type semiconductor 27 and the N-type semiconductor 28 generate "+" - "charges respectively, and then the electric energy is transmitted out through the positive electrode lead wire 34 and the negative electrode lead wire 35 to provide a power supply for the spiral electric heating wire 36 in the secondary raw material preheating chamber 9, so that the secondary separation preheating effect of the raw materials is further improved;
the raw materials of SS04 after the two-stage separation preheating fall into the calcining furnace 2 in a subsection mode through a raw material feeding pipe 8 for calcining, and are conveyed into a clinker cooling cylinder 3 by a corresponding conveying screw 22;
SS05 clinker is sectionally separated by corresponding conveying screw conveyers 22 in the cooling cylinder 3 and is cooled by a spiral refrigerant circulating pipe 41.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A sectional type cement calcining device comprises a support frame (1), a calcining furnace (2) and a clinker cooling cylinder (3); the calcining furnace (2) and the clinker cooling cylinder (3) are fixedly arranged on the side surface of the supporting rack (1) from top to bottom in sequence;
the method is characterized in that:
further comprising:
the primary raw material preheating cylinder (4) is fixedly arranged on the side face of the supporting rack (1) and is positioned right above the calcining furnace (2); a raw material discharge pipe (5) is arranged on the inner bottom surface of the primary raw material preheating barrel (4);
the material distribution assembly (6), wherein the material distribution assembly (6) comprises a rotating shaft (7);
a raw material feeding pipe (8) is arranged at the top in the calcining furnace (2); the end part of the raw material feeding pipe (8) is fixedly connected with a secondary raw material preheating box (9); the inner bottom surface of the secondary raw material preheating box (9) is provided with a shaft hole (10); the rotating shaft (7) is in running fit with the shaft hole (10); a clinker discharging pipe (11) is arranged on the inner bottom surface of the calcining furnace (2);
an air pipe (12) is arranged on the peripheral side surface of the clinker discharging pipe (11); an exhaust fan (13) is arranged in the air pipe (12); an air collecting chamber (14) is fixedly connected to the end part of the air pipe (12); an L-shaped pipe (15) is arranged on the side surface of the air collection chamber (14); a primary preheating pipe (16) and a secondary preheating pipe (17) are sequentially arranged between the L-shaped pipe (15) and the primary raw material preheating cylinder (4) and the secondary raw material preheating box (9) respectively;
the surface of the sealing cover (18) is provided with a feed delivery pipe (19) in a penetrating way; the sealing cover (18) is fixedly arranged at the top of the secondary raw material preheating box (9) through a fastening bolt; the material conveying pipe (19) is fixedly connected with the raw material discharging pipe (5) through a connecting flange.
2. The device for calcining cement as claimed in claim 1, wherein the controller (20) is fixedly installed on the side surface of the supporting frame (1); servo motors (21) are fixedly arranged on the peripheral side surface of the raw material feeding pipe (8) and are positioned right below the shaft hole (10), the end part of the primary raw material preheating cylinder (4), the end part of the calcining furnace (2) and the end part of the clinker cooling cylinder (3); the output end of the controller (20) is electrically connected with each group of servo motors (21) respectively; conveying flood dragon (22) are rotatably arranged in the primary raw material preheating cylinder (4), the calcining furnace (2) and the clinker cooling cylinder (3); each conveying screw conveyer (22) is fixedly connected with the output shaft of the corresponding servo motor (21).
3. A sectional type cement calcining device according to claim 2, characterized in that the output shaft of the servo motor (21) which is positioned on the peripheral side of the raw material feeding pipe (8) and is positioned right below the shaft hole (10) is fixedly connected with the rotating shaft (7); the end part of the rotating shaft (7) is fixedly connected with a rotating plate (42); the circumferential side surface of the rotating plate (42) is circumferentially distributed and fixedly connected with material distributing barrels (43).
4. A staged cement calcination device as claimed in claim 1, wherein a conical raw meal holding box (23) is provided at the top inside said primary raw meal preheating cylinder (4); a spiral gas transmission coil pipe (24) is arranged in the primary raw material preheating cylinder (4); one end of the spiral gas transmission coil pipe (24) is connected with the primary preheating pipe (16), and the other end of the spiral gas transmission coil pipe is provided with an exhaust pipe (25).
5. The staged cement calcining device as claimed in claim 1, wherein a plurality of power generating elements (26) are arranged on the inner wall of the air collecting chamber (14) in a penetrating manner; the power generation element (26) comprises:
a plurality of P-type semiconductors (27) and N-type semiconductors (28) arranged in parallel with each other;
a plurality of hot end faces (29), each hot end face (29) being arranged inside the air collection chamber (14);
a cold end face (30), the cold end face (30) being disposed outside the air collection chamber (14); the side surface of the cold end surface (30) is uniformly provided with heat dissipation grooves (31);
the ends of the adjacent P-type semiconductor (27) and N-type semiconductor (28) are fixedly connected through a hot end face (29); the other end portions of the P-type semiconductor (27) and the N-type semiconductor (28) are fixedly connected through a cold end face (30).
6. The staged cement calcination device according to claim 4, wherein a welding point (32) is welded at the junction of the end of each P-type semiconductor (27) and N-type semiconductor (28) and the cold end face (30); a flow deflector (33) is electrically connected between the adjacent welding points (32); the two welding points (32) at the outermost sides are electrically connected with a positive electrode lead wire (34) and a negative electrode lead wire (35) in sequence; a spiral electric heating wire (36) is arranged in the secondary raw material preheating box (9); the positive electrode outgoing line (34) is electrically connected with the negative electrode outgoing line (35) through the spiral electric heating wire (36).
7. The device for calcination of cement according to claim 1, wherein the inner wall of the raw material feeding pipe (8) is provided with guide baffles (37) staggered from top to bottom at an inclined angle.
8. The staged cement calcination device according to claim 1, wherein the inner wall of the clinker outlet tube (11) is symmetrically and fixedly connected with connecting rings (38) at two sides of the air duct (12); a dust removal cloth bag (39) is arranged between the two connecting rings (38); the two ends of the dust removing cloth bag (39) are provided with openings, and a filter cavity (40) is formed between the dust removing cloth bag and the inner wall of the clinker discharging pipe (11).
9. A staged cement calcination device as claimed in claim 1, wherein said clinker cooling drum (3) is internally provided with a spiral refrigerant fluid circulation tube (41).
10. The method of using a staged cement calcination apparatus as claimed in any one of claims 1 to 9, comprising the steps of:
SS01 controls and starts a servo motor (21) on a primary raw material preheating cylinder (4) through a controller (20), drives a corresponding conveying auger (22) to transmit, conveys the raw material in a conical raw material placing box (23) to a raw material discharging pipe (5), in the process, a part of high-temperature air in a calcining furnace (2) is sucked into a wind collecting chamber (14) through a primary preheating pipe (16), conveyed into a spiral gas conveying coil pipe (24) and discharged from a gas discharging pipe (25) by an exhaust fan (13), and exchanges heat with the raw material conveyed inside the primary raw material preheating cylinder (4) to realize primary preheating of the raw material;
SS02 controls a servo motor (21) on the circumferential side of a raw material feeding pipe (8) and located right below a shaft hole (10) to start and stop periodically through a controller (20), drives a material distribution assembly (6) to rotate periodically and intermittently, raw materials subjected to primary preheating are sequentially put into component charging barrels (43), and in the process, hot air in a secondary preheating pipe (17) is fed into a secondary raw material preheating box (9) to heat the raw materials in component charging barrels (43), so that secondary separated preheating of the raw materials is realized;
hot air in the SS03 air collecting chamber (14) heats the hot end face (29) to improve the temperature difference between the hot end face (29) and the cold end face (30), because the P-type semiconductor (27) and the N-type semiconductor (28) have high heat sensitivity, the surfaces of the P-type semiconductor and the N-type semiconductor respectively generate "+" - "charges, and then electric energy is transmitted out by a positive electrode outgoing line (34) and a negative electrode outgoing line (35) to provide a power supply for a spiral electric heating wire (36) in the secondary raw material preheating chamber (9), so that the secondary separation preheating effect of the raw materials is further improved;
the raw materials of SS04 after two-stage separate preheating fall into the calcining furnace (2) through a raw material feeding pipe (8) in a subsection mode for calcining, and are conveyed into a clinker cooling cylinder (3) by a corresponding conveying screw (22);
SS05 clinker is separated by corresponding conveying screw conveyers (22) in the cooling cylinder (3) in a segmentation way, and is cooled by a spiral refrigerating fluid circulating pipe (41).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211525658.5A CN115751969A (en) | 2022-11-29 | 2022-11-29 | Sectional type cement calcining device and using method |
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| CN202211525658.5A CN115751969A (en) | 2022-11-29 | 2022-11-29 | Sectional type cement calcining device and using method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117466557A (en) * | 2023-12-26 | 2024-01-30 | 凯盛(漳州)新能源有限公司 | Energy-saving environment-friendly clinker calcining and preheating device |
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- 2022-11-29 CN CN202211525658.5A patent/CN115751969A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117466557A (en) * | 2023-12-26 | 2024-01-30 | 凯盛(漳州)新能源有限公司 | Energy-saving environment-friendly clinker calcining and preheating device |
| CN117466557B (en) * | 2023-12-26 | 2024-03-08 | 凯盛(漳州)新能源有限公司 | Energy-saving environment-friendly clinker calcining and preheating device |
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