Device and method for preparing low-carbon calcium oxide

Abstract

The invention provides a low-carbon calcium oxide preparation device and method. The low-carbon calcium oxide preparation device comprises a crushing structure, limestone is added into the upper shell through the feeding port, the limestone is crushed into particles through the rotatable hammer head in the upper shell, then the limestone particles fall into the preheating box from the conical discharging port through the discharging pipe and the open structure to be preheated, and then the multiple preheating tanks are sequentially rotated to the position below the discharging pipe for material receiving through rotation of the rotating disc. When the cylindrical discharging opening in the lower end of the preheating tank rotates to the position above the inclined discharging channel, the sealing plate is opened, the preheated limestone particles fall into the inclined discharging channel through the cylindrical discharging opening to be discharged, a certain amount of limestone particles are added into each preheating tank through the arrangement of the multiple preheating tanks, and therefore the limestone particles can be discharged through the inclined discharging channel. More uniform heating can be realized, meanwhile, the consistency of the preheated limestone particles is ensured, the calcining time of the limestone particles in the lime kiln can be greatly shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a low-carbon calcium oxide preparation device, and in particular to a technology for improving production efficiency by reducing the preheating time of limestone particles. Background Art

[0002] Calcium oxide, also known as quicklime, is an inorganic compound. It is a solid composed of calcium and oxygen elements and is commonly used in construction and industry. Calcium oxide has strong hygroscopicity and can react with water to form calcium hydroxide. It is an important raw material in cement production and is also widely used in metallurgy, fertilizer manufacturing, wastewater treatment and other fields.

[0003] like Figure 1 As shown, the production of calcium oxide mainly uses a crushing structure 1 and a lime kiln 2. The raw material limestone is added to the crushing structure 1, and the limestone is crushed into limestone particles by the crushing structure 1. Then, the limestone particles are transported to the lime kiln 2 by a conveying dragon. The limestone particles are first preheated in the lime kiln 2, and then the preheated limestone particles are calcined in the lime kiln 2. At this time, the limestone produces carbon dioxide and calcium oxide. The carbon dioxide is discharged from the exhaust hole at the upper end of the lime kiln 2, and the calcium oxide left at the bottom of the lime kiln 2 is cooled and then discharged and sieved.

[0004] However, after the existing limestone is crushed in the crushing structure, it will be directly transported to the lime kiln through the conveying dragon. It needs to be preheated in the lime kiln and then calcined. Since the limestone particles will accumulate in the lime kiln, it will take a certain amount of time to preheat the limestone in the lime kiln, and the calcination time of the limestone particles in the lime kiln will be prolonged, resulting in reduced production efficiency; that is, this method cannot achieve continuous production, and it is impossible to directly supply preheated lime raw materials to the lime kiln. If batch preheating and batch supply of raw materials can be achieved, the purpose of continuous calcination production in the lime kiln can be achieved, so there is no need for staged heating, and the corresponding continuous production and energy saving purposes are achieved, thereby achieving low-carbon continuous production. Summary of the invention

[0005] In order to solve the problems existing in the above-mentioned technologies, the present invention provides a technology for improving production efficiency by reducing the preheating time of limestone particles, realizing batch preheating and raw material supply, and realizing continuous production.

[0006] The present invention provides a low-carbon calcium oxide preparation device, comprising a crushing structure,

[0007] The pulverizing structure includes a pulverizing component and a preheating component, wherein the preheating component is arranged at the lower end of the pulverizing component, and the pulverizing component includes an upper shell and a hammer head, wherein the hammer heads are multiple, and the multiple hammer heads are rotatably arranged in the upper shell, and a feed frame is arranged at the upper end of the upper shell, and a conical discharge port is arranged at the lower end of the upper shell, and a discharge pipe is arranged at the lower end of the conical discharge port;

[0008] The preheating component is arranged at the lower end of the upper shell, and the preheating component includes a lower shell, a preheating tank, a turntable, and an inclined discharge channel is arranged on one side of the lower end of the lower shell. The turntable is rotatably arranged in the lower shell, and multiple preheating tanks are arranged in the circumferential direction of the turntable. The upper end of the preheating tank is provided with an open structure, and the lower end of the preheating tank is provided with a cylindrical discharge port, and an open closing plate is arranged at the position of the cylindrical discharge port.

[0009] The above-mentioned beneficial effect is that, by setting up multiple preheating tanks, the raw materials can be preheated in batches. According to the actual production progress, that is, according to the production progress of the calcining tank, a quantitative amount of preheating tanks are quickly provided for supply. In this way, according to the demand of the calcining tank, a quantitative amount of raw materials of multiple preheating tanks are provided for one-time addition, thus realizing a continuous calcination process, avoiding the problem that the calcination process needs to frequently change the heating temperature range and the amount of raw materials added needs to be separately measured, thereby improving production efficiency and achieving the goal of low-carbon production.

[0010] Limestone is added into the upper shell through the feed port, and the limestone is crushed into particles by the rotatable hammer in the upper shell. At this time, the limestone particles fall from the conical discharge port through the discharge pipe and the open structure into the preheating box for preheating. Subsequently, the turntable rotates, and multiple preheating tanks are successively turned to the bottom of the discharge pipe for receiving materials. Whenever the columnar discharge port at the lower end of the preheating tank is turned to the top of the inclined discharge channel, the sealing plate is opened, and the preheated limestone particles fall through the columnar discharge port to the inclined discharge channel for discharge. Here, by arranging multiple preheating tanks, a certain amount of limestone particles are added to each preheating tank, which can achieve more uniform heating and ensure the consistency of the limestone particles after preheating, which will greatly reduce the calcination time of the limestone particles in the lime kiln and improve production efficiency.

[0011] A preferred solution is that the crushing assembly includes a rotating shaft, a disc body, a connecting plate and a hammer head, the rotating shaft is arranged in an upper shell body, a small disc is arranged at the lower end of the rotating shaft, and the small disc is connected to the inner wall of the upper shell body through a plurality of fixing plates, a plurality of disc bodies are arranged on the rotating shaft, a plurality of connecting plates are arranged between every two of the disc bodies, the hammer heads are respectively arranged at the outer ends of the plurality of connecting plates, and the rotating shaft is connected to the motor.

[0012] A preferred solution is that the turntable is connected to a rotating shaft, and the rotating shaft is arranged to pass through a lower shell body, and the rotating shaft is connected to a rotating motor, an insertion groove is arranged on one side of the lower end of the cylindrical discharge port, the closing plate is arranged in the insertion groove, the inner end of the closing plate is connected to a driving plate, and the inner end of the driving plate is rotatably connected to a guide wheel, the guide wheel is arranged in a circular groove, the circular groove has a recessed section, the circular groove is arranged on a fixed disk, a circular hole is arranged in the middle of the fixed disk, the rotating shaft passes through the circular hole and is connected to the turntable, and the outer wall of the fixed disk is connected to the inner wall of the lower shell body through a connecting rod.

[0013] A preferred solution is that a heating tube is provided on the inner wall of the preheating tank, a stirring member is provided in the middle of the preheating tank, the stirring member includes a rotating rod, a spiral blade, and a rotating motor, the rotating rod is arranged in the preheating tank, the spiral blade is arranged on the rotating shaft, and the rotating motor is connected to the rotating rod.

[0014] A preferred solution is that a retractable dredging rod is provided at the position of the discharge port, a fixed disc is provided in the discharge port, the fixed disc is connected to the inner wall of the discharge port through a plate body, a retractable dredging rod is provided on the fixed disc, the lower end of the dredging rod is arc-shaped, a retractable spring is sleeved on the lower end of the dredging rod, the upper end of the retractable spring is connected to the fixed disc and the limit disc, the limit disc is provided at the lower end of the dredging rod, and the lower end of the dredging rod cooperates with the closing plate.

[0015] The working method of the low-carbon calcium oxide preparation device provided by the present invention comprises the following steps:

[0016] Limestone is added into the upper shell from the feed frame, and then the limestone is crushed by the rotating hammer to form limestone particles. Then the limestone particles fall through the conical discharge port, the discharge pipe and the open structure until a certain amount of limestone enters the preheating tank, and the limestone particles are preheated in advance to reduce the moisture in the limestone particles. Subsequently, through the rotation of the turntable, multiple preheating tanks are successively turned to the bottom of the discharge pipe to receive the material. Whenever the cylindrical discharge port at the lower end of a preheating tank is turned to the top of the inclined discharge channel, the closing plate is opened, and the preheated limestone particles in the preheating tank fall into the inclined discharge channel, and are discharged from the inclined discharge channel to the conveying dragon, and are transported to the lime kiln by the conveying dragon for calcining. Here, multiple preheating tanks are set up, so that a certain amount of limestone particles are added to each preheating tank, and more uniform heating can be achieved, while ensuring the consistency of the limestone particles after preheating, which will greatly reduce the calcination time of the limestone particles in the lime kiln and improve production efficiency.

[0017] The working method of the low-carbon calcium oxide preparation device provided by the present invention comprises the following steps:

[0018] When limestone is added into the upper shell from the feed frame, the motor drives the shaft to rotate, and the shaft drives the disc, connecting plate and hammer to rotate. The disc disperses the limestone in the upper shell, and then the rotating hammer crushes the limestone into limestone particles, which can then fall into multiple preheating tanks in sequence through the conical discharge port and the discharge pipe.

[0019] The working method of the low-carbon calcium oxide preparation device provided by the present invention comprises the following steps:

[0020] When limestone particles are added into a preheating tank, the rotating shaft is driven to rotate by a rotating motor, and the rotating shaft drives the turntable to rotate, so that multiple preheating tanks are rotated to the bottom of the discharge pipe in turn. As the turntable rotates, the guide wheel will move in the circular groove. Whenever the cylindrical discharge port at the lower end of a preheating tank moves to the top of the inclined discharge channel, the guide wheel corresponding to the closing plate at the lower end of the cylindrical discharge port will enter the depressed section of the circular groove. At this time, the driving plate will drive the closing plate to move inward, and the closing plate will move inward along the insertion groove, but a small part of the closing plate will remain in the insertion groove. At this time, the cylindrical discharge port is opened, and the preheated limestone particles in the preheating tank fall into the inclined discharge channel through the cylindrical discharge port and are discharged into the conveying dragon. When the limestone in the preheating tank is discharged, the turntable rotates, so that the guide wheel moves out of the depressed section, and the driving plate drives the closing plate to move into the insertion groove, so that the closing plate closes the cylindrical discharge port, so that the automatic discharge process of limestone in multiple preheating tanks can be realized.

[0021] The working method of the low-carbon calcium oxide preparation device provided by the present invention comprises the following steps:

[0022] When the limestone particles are added into the preheating tank, the limestone particles in the preheating tank are heated by the heating tubes arranged on the inner wall of the preheating tank, so that the moisture in the limestone particles is reduced, thereby realizing the preheating of the limestone particles. In order to further preheat the limestone particles in each preheating tank more evenly, the rotating motor can be used to drive the rotating rod to rotate, so that the spiral blades rotate, and the spiral blades turn the limestone particles in the preheating tank, so that the preheating of the limestone particles in the preheating tank is more even, thereby increasing the preheating effect of the limestone particles in the preheating tank.

[0023] The working method of the low-carbon calcium oxide preparation device provided by the present invention comprises the following steps:

[0024] When the closing plate covers the discharge port, the closing plate cooperates with the arc shape of the lower end of the dredging rod, causing the dredging rod to move upward and the telescopic spring to contract. When the closing plate is opened, the telescopic spring extends and the dredging rod moves downward. The closing plate allows the dredging rod to move up or down, and the dredging rod dredges the position of the discharge port to avoid blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the existing crushing structure and lime kiln;

[0026] Figure 2 It is a structural schematic diagram of a low-carbon calcium oxide preparation device of the present invention;

[0027] Figure 3 It is a structural schematic diagram of a side sectional view of a low-carbon calcium oxide preparation device of the present invention;

[0028] Figure 4 It is a structural schematic diagram of a side sectional view of a low-carbon calcium oxide preparation device of the present invention;

[0029] Figure 5 It is a structural schematic diagram of a partial side sectional view of a low-carbon calcium oxide preparation device of the present invention;

[0030] Figure 6 It is a structural schematic diagram of a partial plan view of a low-carbon calcium oxide preparation device of the present invention;

[0031] Figure 7 It is a partial structural schematic diagram of a low-carbon calcium oxide preparation device of the present invention;

[0032] Figure 8 It is a partial structural schematic diagram of a low-carbon calcium oxide preparation device of the present invention;

[0033] Fig. 9 It is a partial structural schematic diagram of a low-carbon calcium oxide preparation device of the present invention;

[0034] Fig.10 It is a structural schematic diagram of a partial side sectional view of a low-carbon calcium oxide preparation device of the present invention. DETAILED DESCRIPTION

[0035] First embodiment:

[0036] like Figures 1 to 3 As shown, the present invention provides a low-carbon calcium oxide preparation device, comprising a crushing structure 10,

[0037] The pulverizing structure 10 includes a pulverizing component 20 and a preheating component 30. The preheating component 10 is arranged at the lower end of the pulverizing component 20. The pulverizing component 20 includes an upper shell 21 and a hammer 22. There are multiple hammers 22, and the multiple hammers 22 are rotatably arranged in the upper shell 21. A feed frame 23 is arranged at the upper end of the upper shell 21, and a conical discharge port 24 is arranged at the lower end of the upper shell 21. A discharge pipe 25 is arranged at the lower end of the conical discharge port 24.

[0038] The preheating assembly 30 is arranged at the lower end of the upper shell 21, and the preheating assembly 30 includes a lower shell 31, a preheating tank 32, a turntable 33, and an inclined discharge channel 34 is arranged on one side of the lower end of the lower shell 31. The turntable 33 is rotatably arranged in the lower shell 31, and multiple preheating tanks 32 are arranged in the circumferential direction of the turntable 33. The upper end of the preheating tank 32 is provided with an open structure 35, and the lower end of the preheating tank 32 is provided with a cylindrical discharge port 36, and an open closing plate 37 is provided at the position of the cylindrical discharge port 36.

[0039] Limestone is added from the feed frame 23 into the upper shell 21, and then the limestone is crushed by the rotating hammer 22 to form limestone particles. Then, the limestone particles fall through the conical discharge port 24, the discharge pipe 25 and the open structure 35 until a certain amount of limestone enters the preheating tank 32, and the limestone particles are preheated in advance to reduce the moisture in the limestone particles. Then, through the rotation of the turntable 33, multiple preheating tanks 32 are rotated to the bottom of the discharge pipe 25 to receive the material. Whenever the cylindrical discharge port 36 at the lower end of a preheating tank 32 is rotated to the inclined discharge channel 34, the closing plate 37 is opened, and the preheated limestone particles in the preheating tank 32 fall into the inclined discharge channel 34, and are discharged from the inclined discharge channel 34 into the conveying dragon, and are transported to the lime kiln by the conveying dragon for calcination. Here, by arranging multiple preheating tanks 32, a certain amount of limestone particles are added to each preheating tank 32, so that more uniform heating can be achieved, and at the same time, the consistency of the limestone particles after preheating is ensured, which will greatly reduce the calcination time of the limestone particles in the lime kiln, so that the production efficiency is improved.

[0040] If the limestone is preheated in multiple preheating tanks and then added into the lime kiln for preheating again, the preheating time in the lime kiln will be greatly reduced, thereby improving production efficiency.

[0041] The batch preheating treatment of raw materials is achieved by setting up multiple preheating tanks. According to the actual production progress, that is, according to the production progress of the calcining tank, a quantitative amount of preheating tanks are quickly provided for supply. In this way, according to the demand of the calcining tank, a quantitative amount of raw materials for multiple preheating tanks are provided for one-time addition, thus realizing a continuous calcination process and avoiding the problem that the calcination process needs to frequently change the heating temperature range and the amount of raw materials added needs to be separately measured, thereby improving production efficiency and achieving the goal of low-carbon production.

[0042] Second embodiment;

[0043] like Figure 5As shown, the crushing assembly 20 includes a rotating shaft 41, a disc body 42, a connecting plate 43 and a hammer head 22. The rotating shaft 41 is arranged in the upper shell body 21. A small disc 44 is arranged at the lower end of the rotating shaft 21. The small disc 44 is connected to the inner wall of the upper shell body 21 through multiple fixing plates 45. Multiple disc bodies 42 are arranged on the rotating shaft 41, and multiple connecting plates 43 are arranged between every two of the disc bodies 42. The hammer heads 22 are respectively arranged at the outer ends of the multiple connecting plates 43. The rotating shaft 41 is connected to the motor 46.

[0044] When limestone is added into the upper shell 21 from the feed frame 23, the motor 46 drives the rotating shaft 41 to rotate, and the rotating shaft 41 drives the disc 42, the connecting plate 43 and the hammer 44 to rotate. The disc 42 disperses the limestone in the upper shell 21, and then the limestone is crushed into limestone particles by the rotating hammer 44. After that, the limestone particles can be sequentially dropped into multiple preheating tanks 32 through the conical discharge port 24 and the discharge pipe 25.

[0045] Third embodiment;

[0046] like Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, the turntable 33 is connected to the rotating shaft 51, and the rotating shaft 51 is arranged to pass through the lower shell body 31, and the rotating shaft 51 is connected to the rotating motor 52. An insertion groove 53 is arranged on one side of the lower end of the cylindrical discharge port 36, and the closing plate 37 is arranged in the insertion groove 53. The inner end of the closing plate 37 is connected to the driving plate 54, and the inner end of the driving plate 54 is rotatably connected to the guide wheel 55. The guide wheel 55 is arranged in a circular groove 56, and the circular groove 56 has a recessed section 57. The circular groove 56 is arranged on a fixed plate 58, and a circular hole is arranged in the middle of the fixed plate 58. The rotating shaft 51 passes through the circular hole and is connected to the turntable 33, and the outer wall of the fixed plate 58 is connected to the inner wall of the lower shell body 31 through a connecting rod 59.

[0047] After limestone particles are added to a preheating tank 32, the rotating motor 52 drives the rotating shaft 51 to rotate, and the rotating shaft 51 drives the rotating disk 33 to rotate, so that multiple preheating tanks 32 are rotated to the bottom of the discharge pipe 25 in sequence. As the rotating disk 33 rotates, the guide wheel 55 moves in the circular groove 56. Whenever the cylindrical discharge port 36 at the lower end of a preheating tank 32 moves to the top of the inclined discharge channel 34, the guide wheel 55 corresponding to the closing plate 37 at the lower end of the cylindrical discharge port 36 enters the concave section 57 of the circular groove 56. At this time, the driving plate 54 drives the closing plate 37 to move inward, and the closing plate 37 It moves inward along the insertion groove 53, but a small part of the closing plate 53 remains in the insertion groove 53. At this time, the columnar discharge port 36 is opened, and the preheated limestone particles in the preheating tank 32 fall into the inclined discharge channel 34 through the columnar discharge port 36 and are discharged into the conveying dragon. When the limestone in the preheating tank 32 is discharged, the turntable 33 rotates, so that the guide wheel 55 moves out of the recessed section 57, and the driving plate 54 drives the closing plate 37 to move into the insertion groove 53, so that the closing plate 37 closes the columnar discharge port 36, so that the automatic discharge process of the limestone in multiple preheating tanks 32 can be realized.

[0048] In addition, a sensor is provided on the outer wall of the upper end of the inclined discharge channel, and the sensor is connected to a controller, which is provided on the outer wall of the cylindrical discharge port. The controller is also connected to a valve, which is provided on the cylindrical discharge port. Whenever the cylindrical discharge port at the lower end of a preheating tank turns to the top of the inclined discharge channel, the sensor transmits a signal to the controller, which controls the valve on the cylindrical discharge port to open or close, thereby replacing the closing plate.

[0049] Fourth embodiment;

[0050] like Fig. 9 As shown, the inner wall of the preheating tank 32 is provided with a heating tube (not shown in the drawings), and a stirring member 90 is provided in the middle of the preheating tank 32. The stirring member 90 includes a rotating rod 91, a spiral blade 92, and a rotating motor 93. The rotating shaft 91 is arranged in the preheating tank 32, the spiral blade 92 is arranged on the rotating rod 91, and the rotating motor 93 is connected to the rotating rod 91.

[0051] After the limestone particles are added into the preheating tank 32, the limestone particles in the preheating tank 32 are heated by the heating pipes arranged on the inner wall of the preheating tank 32, so that the moisture in the limestone particles is reduced, thereby realizing the preheating of the limestone particles. In order to further preheat the limestone particles in each preheating tank 32 more evenly, the rotating motor 93 can be used to drive the rotating rod 91 to rotate, so that the spiral blades 92 rotate, and the spiral blades 92 turn the limestone particles in the preheating tank, so that the limestone particles are preheated more evenly in the preheating tank 32, thereby increasing the preheating effect of the limestone particles in the preheating tank 32.

[0052] Fifth embodiment;

[0053] like Fig.10 As shown, a retractable dredging rod 161 is provided at the position of the discharge port 36, a fixed disc 162 is provided inside the discharge port 36, the fixed disc 162 is connected to the inner wall of the discharge port 36 through a plate body 163, a retractable dredging rod 161 is provided on the fixed disc 162, the lower end of the dredging rod 161 is arc-shaped 164, a retractable spring 165 is sleeved on the lower end of the dredging rod 161, the upper end of the retractable spring 165 is connected to the fixed disc 162 and the limit disc 166, the limit disc 166 is provided at the lower end of the dredging rod 161, and the lower end of the dredging rod 161 cooperates with the closing plate 37;

[0054] When the closing plate 37 closes the discharge port 36, the closing plate 37 cooperates with the arc 164 at the lower end of the dredging rod 161, so that the dredging rod 161 moves up and the telescopic spring 165 contracts. When the closing plate 37 is opened, the telescopic spring 165 stretches and the dredging rod 161 moves down. The dredging rod 161 moves up or down through the action of the closing plate 37, and the dredging rod 161 dredges the position of the discharge port 36 to avoid the problem of blockage of the discharge port 36. The upper end of the dredging rod 161 is preferably a conical structure, that is, a structure with a sharp top and a wide bottom, so that when it moves up and down, the pointed structure on the top can be used to pierce the blocked material at this position, or keep the material at this position in a loose state to facilitate subsequent discharge.

Claims

1. A low-carbon calcium oxide preparation device, characterized in that: Including crushing structure, The pulverizing structure includes a pulverizing component and a preheating component, wherein the preheating component is arranged at the lower end of the pulverizing component, and the pulverizing component includes an upper shell and a hammer head, wherein the hammer heads are multiple, and the multiple hammer heads are rotatably arranged in the upper shell, and a feed frame is arranged at the upper end of the upper shell, and a conical discharge port is arranged at the lower end of the upper shell, and a discharge pipe is arranged at the lower end of the conical discharge port; The preheating component is arranged at the lower end of the upper shell, and the preheating component includes a lower shell, a preheating tank, a turntable, and an inclined discharge channel is arranged on one side of the lower end of the lower shell. The turntable is rotatably arranged in the lower shell, and multiple preheating tanks are arranged in the circumferential direction of the turntable. The upper end of the preheating tank is provided with an open structure, and the lower end of the preheating tank is provided with a cylindrical discharge port, and an open closing plate is arranged at the position of the cylindrical discharge port.

2. The low-carbon calcium oxide preparation device according to claim 1, characterized in that: The crushing assembly includes a rotating shaft, a disc body, a connecting plate and a hammer head. The rotating shaft is arranged in an upper shell body. A small disc is arranged at the lower end of the rotating shaft. The small disc is connected to the inner wall of the upper shell body through multiple fixing plates. Multiple disc bodies are arranged on the rotating shaft. Multiple connecting plates are arranged between every two disc bodies. The hammer heads are respectively arranged at the outer ends of the multiple connecting plates. The rotating shaft is connected to the motor.

3. The low-carbon calcium oxide preparation device according to claim 1, characterized in that: The turntable is connected to the rotating shaft, and the rotating shaft is arranged to pass through the lower shell body, and the rotating shaft is connected to the rotating motor. An insertion groove is arranged on one side of the lower end of the cylindrical discharge port, and the closing plate is arranged in the insertion groove. The inner end of the closing plate is connected to the driving plate, and the inner end of the driving plate is rotatably connected to the guide wheel, and the guide wheel is arranged in a circular groove, and the circular groove has a recessed section. The circular groove is arranged on the fixed disk, and a circular hole is arranged in the middle of the fixed disk. The rotating shaft passes through the circular hole and is connected to the turntable, and the outer wall of the fixed disk is connected to the inner wall of the lower shell body through a connecting rod.

4. The low-carbon calcium oxide preparation device according to claim 1, characterized in that: The inner wall of the preheating tank is provided with a heating tube, and the middle part of the preheating tank is provided with a stirring member, and the stirring member includes a rotating rod, a spiral blade, and a rotating motor. The rotating shaft is arranged in the preheating tank, the spiral blade is arranged on the rotating rod, and the rotating motor is connected to the rotating rod.

5. The low-carbon calcium oxide preparation device according to claim 1, characterized in that: A retractable dredging rod is arranged at the position of the discharge port, a fixed disc is arranged inside the discharge port, the fixed disc is connected to the inner wall of the discharge port through a plate body, a retractable dredging rod is arranged on the fixed disc, the lower end of the dredging rod is arc-shaped, a retractable spring is sleeved on the lower end of the dredging rod, the upper end of the retractable spring is connected to the fixed disc and the limit disc, the limit disc is arranged at the lower end of the dredging rod, and the lower end of the dredging rod cooperates with the closing plate.

6. The working method of the low-carbon calcium oxide preparation device according to claim 1, characterized in that: Includes the following steps; Limestone is added into the upper shell from the feed frame, and then the limestone is crushed by the rotating hammer to form limestone particles. Then the limestone particles fall through the conical discharge port, the discharge pipe and the open structure until a certain amount of limestone enters the preheating tank, and the limestone particles are preheated in advance to reduce the moisture in the limestone particles. Subsequently, through the rotation of the turntable, multiple preheating tanks are successively turned to the bottom of the discharge pipe to receive the material. Whenever the cylindrical discharge port at the lower end of a preheating tank is turned to the top of the inclined discharge channel, the closing plate is opened, and the preheated limestone particles in the preheating tank fall into the inclined discharge channel, and are discharged from the inclined discharge channel to the conveying dragon, and are transported to the lime kiln by the conveying dragon for calcining. Here, multiple preheating tanks are set up, so that a certain amount of limestone particles are added to each preheating tank, and more uniform heating can be achieved, while ensuring the consistency of the limestone particles after preheating, which will greatly reduce the calcination time of the limestone particles in the lime kiln and improve production efficiency.

7. The working method of the low-carbon calcium oxide preparation device according to claim 2, characterized in that: Includes the following steps; When limestone is added into the upper shell from the feed frame, the motor drives the shaft to rotate, and the shaft drives the disc, connecting plate and hammer to rotate. The disc disperses the limestone in the upper shell, and then the rotating hammer crushes the limestone into limestone particles, which can then fall into multiple preheating tanks in sequence through the conical discharge port and the discharge pipe.

8. The working method of the low-carbon calcium oxide preparation device according to claim 3, characterized in that: Includes the following steps; When limestone particles are added into a preheating tank, the rotating shaft is driven to rotate by a rotating motor, and the rotating shaft drives the turntable to rotate, so that multiple preheating tanks are rotated to the bottom of the discharge pipe in turn. As the turntable rotates, the guide wheel will move in the circular groove. Whenever the cylindrical discharge port at the lower end of a preheating tank moves to the top of the inclined discharge channel, the guide wheel corresponding to the closing plate at the lower end of the cylindrical discharge port will enter the depressed section of the circular groove. At this time, the driving plate will drive the closing plate to move inward, and the closing plate will move inward along the insertion groove, but a small part of the closing plate will remain in the insertion groove. At this time, the cylindrical discharge port is opened, and the preheated limestone particles in the preheating tank fall into the inclined discharge channel through the cylindrical discharge port and are discharged into the conveying dragon. When the limestone in the preheating tank is discharged, the turntable rotates, so that the guide wheel moves out of the depressed section, and the driving plate drives the closing plate to move into the insertion groove, so that the closing plate closes the cylindrical discharge port, so that the automatic discharge process of limestone in multiple preheating tanks can be realized.

9. The working method of the low-carbon calcium oxide preparation device according to claim 4, characterized in that: Includes the following steps; When the limestone particles are added into the preheating tank, the limestone particles in the preheating tank are heated by the heating tubes arranged on the inner wall of the preheating tank, so that the moisture in the limestone particles is reduced, thereby realizing the preheating of the limestone particles. In order to further preheat the limestone particles in each preheating tank more evenly, the rotating motor can be used to drive the rotating rod to rotate, so that the spiral blades rotate, and the spiral blades turn the limestone particles in the preheating tank, so that the preheating of the limestone particles in the preheating tank is more even, thereby increasing the preheating effect of the limestone particles in the preheating tank.

10. The working method of the low-carbon calcium oxide preparation device according to claim 5, characterized in that: Includes the following steps; When the closing plate covers the discharge port, the closing plate cooperates with the arc shape of the lower end of the dredging rod, causing the dredging rod to move upward and the telescopic spring to contract. When the closing plate is opened, the telescopic spring extends and the dredging rod moves downward. The closing plate allows the dredging rod to move up or down, and the dredging rod dredges the position of the discharge port to avoid blockage.

Images