Heat treatment furnace for concrete production

Abstract

The invention relates to the technical field of concrete production, in particular to a heat treatment furnace for concrete production, which comprises a base, a furnace body is arranged on the base, and a feed bin and a burner are respectively arranged at two ends of the furnace body. When raw cement is processed through the material conveying assembly, materials on a material conveying plate are gradually conveyed to the other end of the furnace body, and in the process, due to the arrangement of a reverse moving plate, the influence of airflow sprayed out of a combustor on small-particle materials is avoided; the rolling direction of the materials in the falling process is continuously changed through the stirring assembly while the advancing speeds of the large materials and the small materials are consistent, so that stirring is achieved till the corresponding material conveying plates get close to the feeding groove, one-time material conveying is completed, uniform mixing of the materials is guaranteed, uniform distribution of the materials in the furnace body is guaranteed, and the service life of the furnace body is prolonged. And the materials are in contact with high-temperature flue gas in the whole process, so that the uniformity of the temperature of the materials is ensured, and the assembly is simple in structure and easy to process and maintain.

Description

Technical Field

[0001] The invention relates to the technical field of concrete production, in particular to a heat treatment furnace for concrete production. Background Art

[0002] The heat treatment furnace used in concrete production is a smelting equipment, also called a rotary kiln, which is generally used for calcining or smelting building materials. In the field of cement preparation, a roasting rotary kiln is often used to calcine cement clinker. Specifically, limestone powder and other auxiliary materials are put into the furnace body, and the materials are transported from the kiln tail to the kiln head by rotating and tilting the furnace body. During this process, the burner sprays fuel into the furnace body through a nozzle, so that the fuel and air are mixed and burned to produce a high-temperature flame, and the heat is transferred to the material in the furnace body, so that the material reaches the high temperature required for calcination, thereby forging into cement clinker.

[0003] The rotary drum of the existing rotary kiln for cement production is paved with refractory bricks, and the materials are transported from the kiln tail to the kiln head by the rotation and tilt of the rotary drum. When the cement plant is opened in a high-altitude area, the cement raw material is not fully burned due to the scarcity of oxygen in the high-altitude area. In order to fully burn it, the temperature in the rotary kiln can only be increased by increasing the fuel of the burner and increasing the wind speed input into the kiln, thereby ensuring the quality of the produced cooked cement. Due to the increase in wind speed, the small particles in the kiln are more likely to roll toward the kiln head with the wind, resulting in a difference in the travel speed of large particles and small particles, affecting the uniform mixing of materials in the furnace body, and then affecting the calcination quality of cement clinker.

[0004] In view of the above problems, the prior art provides some solutions. For example, the patent document with patent application number CN202411285116.4 discloses a cement rotary kiln, including a base, a kiln body is arranged on the base, a material delivery mechanism and a stirring mechanism are arranged in the kiln body, the material delivery mechanism includes a plurality of groups of material delivery components arranged in sequence along the length direction of the kiln body, each group of material delivery components includes a fixed ring, an arc plate and a conveying member, a material delivery cavity is formed between each arc plate and the inner wall of the kiln body, the material delivery cavity close to the feed bin is communicated with the inside of the feed bin, and any two adjacent material delivery cavities can Similarly, the conveying member is used to convey the material to move in two adjacent material transfer chambers during the rotation of the arc plate. The stirring mechanism is arranged in the material transfer chamber to stir the material in the material transfer chamber during the rotation of the arc plate, which is beneficial to more uniform mixing of the material and ensures the quality of the produced cement clinker. However, in the process of transporting the material from the feed bin to the burner in this scheme, the material is isolated between the material troughs due to the restriction and separation of the arc plate, and the material cannot directly contact the high-temperature flue gas. The temperature of the material is insufficient, the heating is uneven, and the structure is complex, which affects the heating effect. Summary of the invention

[0005] The object of the present invention is to provide a heat treatment furnace for concrete production, so as to solve the problem that in the process of conveying materials in the furnace body of a rotary kiln, the traveling speeds of large-particle materials and small-particle materials may be inconsistent, affecting the uniform mixing of materials in the furnace body, and further affecting the calcination quality of cement clinker; when the above problem occurs in the heat treatment furnace for concrete production, the calcination quality of cement clinker does not meet the requirements, and at the same time solves the shortcomings of the existing technical solutions.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A heat treatment furnace for concrete production comprises a base, on which is a furnace body, and at both ends of the furnace body are respectively provided with a feed bin and a burner, specifically, a feed assembly is provided in the furnace body, and a plurality of groups of feed assemblies are sequentially arranged along the length direction of the furnace body, the feed assembly comprises a plurality of feed plates fixedly installed on the inner wall of the furnace body in a circular array, and a counter plate rotating relative to the feed plate, a feed trough is provided on the counter plate, a feed cavity is formed between the feed trough and the next group of feed plates, the feed plates are arranged inclined toward the feed trough, and a gap is provided between the counter plate and the feed plate, a stirring assembly is provided between the feed plates, the stirring assembly is symmetrical with adjacent feed plates at a mirror angle, and slides in contact with the end surface of the counter plate, the feed assembly drives part of raw cement to fall into the feed cavity through the feed trough by the rotation of the furnace body, and causes the raw cement to flow between the stirring assembly and the feed plate by rotation.

[0008] It is easy to understand that limestone powder and other auxiliary materials are added into the feed bin from the feed hopper, and the materials enter the furnace body from the feed bin, and are transported from front to back along the length of the furnace body through the rotation and tilting of the furnace body until they are discharged from the other end of the furnace body. In this process, fuel is sprayed into the furnace body through the burner, so that the fuel and air are mixed and burned to generate high-temperature flames, and the heat is transferred to the materials in the furnace body, so that the temperature of the materials is gradually increased to complete the required process. When the material transfer component is performing the above process, the material on the material transfer plate is gradually transferred to the other end of the furnace body. In this process The setting of the middle counter-movement plate avoids the influence of the airflow ejected from the burner on small particle materials, and makes the traveling speed of large and small materials consistent. At the same time, the stirring component makes the rolling direction of the materials constantly change during the falling process, thereby realizing the stirring of the materials, until the corresponding transfer plate approaches the feed trough, and the materials on the transfer plate fall into the transfer cavity along the feed trough, thereby completing one material transportation, thereby ensuring the uniform mixing of the materials, ensuring the uniform distribution of the materials in the furnace body, and the materials are exposed to high-temperature flue gas throughout the process, thereby ensuring the uniformity of the material temperature, and the component structure is simple and easy to process and maintain.

[0009] Preferably, the material transfer assembly also includes a gear group, which is fixedly connected to the furnace body and coaxial with the counter plate. While the counter plate is connected to the furnace body through the gear group, the gear group supports the weight of the counter plate. The material transfer plate is away from one end of the feed trough and higher than the end of the material transfer plate close to the feed trough. The inclination angle of the material transfer plate toward the feed trough is the same as the inclination angle of the furnace body relative to the ground.

[0010] It is easy to understand that when observing in the direction of the burner, the furnace body rotates clockwise at a speed of two revolutions per minute, and the material transfer plate rotates accordingly. Different material transfer plates gradually rotate through the feed trough, and transport the material on the material transfer plate through the feed trough to the material transfer chamber, thereby completing a material transportation, thereby avoiding the influence of the airflow ejected by the burner on small particle materials, and making the travel speed of large and small materials consistent. In this process, because of the setting of the gear set and the realization of the relative rotation of the counter plate and the furnace body, the material can be stirred at a high frequency and multiple times before entering the material transfer chamber, thereby improving the uniformity of the material, thereby ensuring the conversion efficiency of the material; at the same time, the relative rotation of the counter plate and the furnace body will make the furnace body rotate unstable, thereby affecting the stirring effect of the material. The gear meshing transmission method is adopted to improve the rotation stability of the counter plate. At the same time, its structure is simple. It only needs to set the corresponding transmission ratio to obtain the appropriate material stirring speed during transportation. In the high temperature environment of 800℃ to 1400℃ in the furnace body, its mechanical transmission control method is more suitable than the servo motor.

[0011] Preferably, the stirring assembly includes a stirring plate, and each stirring plate is provided between two adjacent material transfer plates. One end of the stirring plate abuts against the counter plate, and a gap is provided between the other end and the previous set of counter plates. The stirring plate is at an angle of 35° to 45° relative to the horizontal ground toward the direction of the feed bin.

[0012] It is easy to understand that by setting a stirring plate between the transfer plates, due to the continuous movement of the feed chute, each transfer plate cannot transport the material to the transfer chamber at the moment of obtaining the material. In the above process, due to the rotation of the furnace body and the inclined setting of the transfer plate, the material in the transfer plate will roll toward the stirring plate and fall into the next transfer plate along the gap between the stirring plates. Since the stirring plate is at an angle of 35° relative to the horizontal ground toward the feed bin, the falling direction of the material is changed, so that the material continues to roll between different stirring plates and transfer plates until the position of the feed chute is rotated to the transfer plate containing the material. The material is able to fall into the feed chute through the inclination and inertia of the transfer plate. In the above process, the material is constantly and quickly stirred and tumbled, thereby ensuring uniform mixing of the material and ensuring uniform distribution of the material in the furnace body.

[0013] Preferably, an air guide portion and air guide grooves are provided on the inner ring of the reversing plate, the air guide portion is provided on the inner circular surface of the reversing plate and is in an arc shape convex toward the direction of the feed bin, a plurality of the air guide grooves are opened in the air guide portion in a circular array and are connected with the material transfer plate, the air guide grooves are arranged inclined toward the material transfer plate and the angle of the air guide grooves relative to the horizontal ground is 35° to 45°.

[0014] It is easy to understand that, due to the setting of the reversing plate, while avoiding the influence of the airflow ejected from the burner on small particle materials, the airflow is blocked, and the hot airflow cannot directly act on the material, resulting in uneven heating of the material. By providing an arc-shaped air guide portion convex toward the feed bin on the reversing plate, the high-temperature gas can be gathered to the air guide groove through the air guide portion. The high-temperature gas is guided by the air guide groove and directly contacts the material in transportation, thereby ensuring that the material is heated evenly.

[0015] Preferably, the gap is composed of the distance between the stirring plate and the counter plate, and the stirring plate is provided with an arc surface, the closest distance between the arc surface and the counter plate is 9 mm, and the farthest distance is 51 mm, and the counter plate is provided with convex circles in a circular array, and the convex circles are inclined toward the gap, and the transfer plate is also provided with a groove that matches the convex circle.

[0016] It is easy to understand that in order to avoid the phenomenon of material agglomeration due to insufficient temperature in the kiln, thereby causing insufficient conversion of the material, the gap is set to be close to the diameter of the pellet, so that the large-particle pellets falling into the gap can be crushed by the rotation and grinding of the stirring plate and the counter-moving plate. Since the diameter of the pellets is generally between 10mm and 50mm, an arc surface is set on the stirring plate and the curvature of the arc surface is set to ensure that pellets of different sizes can fall into the gap. In the process of the pellets falling, the width of the gap continues to decrease, making the pellets smaller and smaller until they disappear. Due to the rotation direction of the counter-moving plate, the convex circle squeezes the pellets from top to bottom. While ensuring that the pellets will not be stuck in the gap, the extrusion direction can also promote the crushing of the pellets, thereby ensuring the uniformity of the material.

[0017] Preferably, the gear set includes a toothed disc, a transmission rod, a gear part one, a gear one and a gear two, the transmission rod is arranged at the center of the furnace body and is fixedly connected to the furnace body, the toothed disc is fixedly connected to the counter plate and is rotatably mounted on the transmission rod, the gear one is fixedly connected to the transmission rod and is rotatably mounted in the toothed disc, and the gear part one is arranged on the inner circle of the toothed disc and is connected to the gear one through the gear two.

[0018] It is easy to understand that gear part 1 is arranged in the toothed disc and is in the shape of an internal gear. When the furnace body rotates clockwise, gear part 2 drives the toothed part to rotate in the same direction. Since gear part 1 and gear part 2 are meshed, gear part 2 rotates synchronously while the rotation direction of gear part 2 is relative to gear part 1. When gear part 2 drives gear part 1 to rotate, the rotation direction of the toothed disc is the same as that of gear part 2, thereby realizing that the rotation direction of the counter plate and the furnace body are relative. Due to the setting of the counter plate, while avoiding the influence of the airflow ejected by the burner on small particle materials, the temperature of the materials on its material delivery assembly will inevitably decrease. By setting the counter plate to rotate relative to the direction of the furnace body, the material transportation speed is stabilized while the material can be turned over and stirred more times in the same unit time, thereby improving the uniformity of the material. In addition, gear part 1 and gear part 2 can support the counter plate when transmitting power. This setting can effectively disperse the weight of the counter plate, reduce vibration and unbalanced load, thereby ensuring the smooth operation of the furnace body during rotation.

[0019] Preferably, the positions of two adjacent feed troughs are radially symmetrical with the furnace body, and a material guide groove is further provided toward the material transfer cavity, the material guide groove is connected with the inner wall of the furnace body at the material transfer cavity, and the two adjacent material guide grooves are symmetrical with the center of the axial plane of the furnace body.

[0020] It is easy and immediate. Since the furnace body generally rotates in one direction only, the position of the material guide chute pointing to the inner wall of the furnace body is constantly changing, and in coordination with the rotation of the furnace body, the material that enters the material delivery chamber first can be moved to the next group of material delivery components first, thereby avoiding the phenomenon of the front and rear materials being stacked in one place, resulting in too long or insufficient heating time for some materials, thereby ensuring the uniformity of the baking temperature of the materials, and the setting of the material guide chute slows down the falling speed of the materials, further ensuring the separation of the front and rear materials entering the material delivery chamber.

[0021] Preferably, the stirring plate is provided with an arc surface portion, and the counter-movement plate is provided with a convex round portion, and the arc surface and the convex round portion are respectively sleeved on the arc surface portion and the convex round portion and are fastened and connected by bolts.

[0022] It is easy to understand that when the arc surface and the convex circle grind the pellet material for a long time, they will gradually wear out, which will increase the width of the gap and make it impossible to fully crush the pellet material. By pulling out the bolts, the worn arc surface and convex circle can be replaced, and arc surfaces and convex circles of different shapes can also be replaced to grind raw cement for various purposes. While avoiding the formation of pellets, the quality of the cooked cement after combustion is improved.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention provides a material transfer assembly and a stirring assembly. The material transfer assembly rotates with the furnace body to transfer the material on the material transfer plate to the other end of the furnace body. In this process, the reverse plate is used to avoid the influence of the airflow ejected from the burner on small-particle materials, and the moving speed of large and small materials is consistent. At the same time, the stirring assembly is used to continuously change the rolling direction of the material during the falling process until the material transfer plate approaches the feed trough, thereby ensuring uniform mixing of the material and uniform distribution of the material in the furnace body. The material is exposed to high-temperature flue gas throughout the process, thereby ensuring uniform material temperature. The assembly has a simple structure and is easy to process and maintain.

[0025] 2. The present invention realizes the relative rotation of the counter plate and the furnace body by setting a gear set. Due to the setting of the counter plate, while avoiding the influence of the airflow ejected by the burner on the small particle material, the temperature of the material on the material delivery assembly will inevitably decrease. By setting the counter plate to rotate relative to the direction of the furnace body, the material transportation speed is stabilized and the material can be turned and stirred more times within the same unit time, thereby improving the uniformity of the material. In addition, gears one and two can support the counter plate when transmitting power. This setting can effectively disperse the weight of the counter plate, reduce vibration and unbalanced load, thereby ensuring the smooth operation of the furnace body during rotation.

[0026] 3. The present invention sets a material guide chute. Since the furnace body generally rotates in one direction only, the position of the material guide chute pointing to the inner wall of the furnace body is constantly changed, and cooperates with the rotation of the furnace body to ensure that the front and rear materials will not be stacked in one place, thereby ensuring the uniformity of the temperature of the materials during baking. The setting of the material guide chute slows down the falling speed of the materials, further ensuring the separation of the front and rear materials entering the material transfer chamber.

[0027] 4. The present invention provides an arc surface portion and a convex portion. When the arc surface and the convex portion grind the pellet material for a long time, they will gradually wear out, so that the width of the gap increases, and the pellet material cannot be fully crushed. The worn arc surface and convex portion can be replaced by pulling out the bolts, and the arc surface and convex portion of different shapes can also be replaced to grind raw cement for various purposes, thereby improving the quality of the cement cooked after combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of a heat treatment furnace for concrete production according to the present invention;

[0029] Figure 2 It is a schematic diagram of the structural coordination of the stirring component and the material delivery component in the furnace body;

[0030] Figure 3 for Figure 2 Full cross-section at AA in the middle;

[0031] Figure 4 for Figure 2 Full cross-section at the middle BB;

[0032] Figure 5 for Figure 3 Schematic diagram of the ectopic state of two adjacent feeding slots;

[0033] Figure 6 for Figure 3 Full cross-section at center C;

[0034] Figure 7 It is the structural state diagram of the other side of the counter plate;

[0035] Figure 8 for Figure 7 Full cross-section of the structural state of the gear set at DD in the middle;

[0036] Fig. 9 It is a schematic diagram of the local structure between the air guide part, the air guide groove and the material transfer plate.

[0037] In the figure: 1. base; 101. furnace body; 102. feed bin; 103. burner; 2. material delivery assembly; 201. material delivery plate; 202. counter plate; 2021. material feed trough; 2022. material guide trough; 203. air guide portion; 2031. air guide trough; 204. convex circle; 2041. convex circle portion; 205. material delivery cavity; 206. arc surface; 2061. arc surface portion; 207. gap; 3. stirring assembly; 301. stirring plate; 304. groove; 4. gear set; 401. gear portion 1; 402. toothed disc; 403. gear 1; 404. gear 2; 405. transmission rod. DETAILED DESCRIPTION

[0038] The present invention provides a heat treatment furnace for concrete production, and the technical solution is as follows:

[0039] See also Figures 1 to 3A heat treatment furnace for concrete production, comprising a base 1, a furnace body 101 is arranged on the base 1, and a feed bin 102 and a burner 103 are respectively arranged at both ends of the furnace body 101, characterized in that a plurality of groups of material delivery components 2 are sequentially arranged along the length direction of the furnace body 101, and the material delivery components 2 include a plurality of material delivery plates 201 fixedly installed on the inner wall of the furnace body 101 in a circumferential array, and a counter plate 202 that rotates relative to the material delivery plate 201, and a feed trough 2021 is opened on the counter plate 202, and the feed trough 2021 is connected to the next group of A material transfer cavity 205 is formed between the material transfer plates 201, and the material transfer plates 201 are arranged to be inclined toward the feed trough 2021. A stirring assembly 3 is provided between the material transfer plates 201. The stirring assembly 3 is symmetrical with the adjacent material transfer plates 201 at a mirror angle, and slides on the end surface of the counter plate 202. The material transfer assembly 2 uses the rotational power provided by the furnace body 101 to enable the material transfer plates 201 to drive part of the raw cement to fall into the material transfer cavity 205 through the feed trough 2021, and the raw cement flows between the stirring assembly 3 and the material transfer plates 201 through rotation.

[0040] See also Figures 1 to 9 The material transfer assembly 2 also includes a gear set 4, which is fixedly connected to the furnace body 101 and is coaxial with the counter plate 202. While the counter plate 202 is connected to the furnace body 101 through the gear set 4, the gear set 4 supports the weight of the counter plate 202. The end of the material transfer plate 201 is away from the feed trough 2021 and is higher than the end of the material transfer plate 201 close to the feed trough 2021. The inclination angle of the material transfer plate 201 toward the feed trough 2021 is the same as the inclination angle of the furnace body 101 relative to the ground. The gear set 4 includes a toothed disc 402, a transmission rod 405, a gear part 1 401, a gear 1 403 and a gear 2 404. The transmission rod 405 is arranged at the center of the furnace body 101 and is fixedly connected to the furnace body 101. The toothed disc 402 is fixedly connected to the counter plate 202 and is rotatably installed on the transmission rod 405. The gear 1 403 is fixedly connected to the transmission rod 405 and is rotatably installed in the toothed disc 40 2. The gear part 1 401 is arranged on the inner circle of the toothed disc 402 and is connected to the gear part 1 403 through the gear part 2 404. The positions of the two adjacent feed slots 2021 are radially symmetrical with the furnace body 101. The feed slots 2021 are further provided with a guide slot 2022 toward the transfer cavity 205. The guide slot 2022 is connected to the inner wall of the furnace body 101 at the transfer cavity 205. The two adjacent guide slots 2022 are symmetrical with the center of the axial plane of the furnace body 101. An air guide portion 203 and an air guide groove 2031 are provided on the inner ring of the reversing plate 202. The air guide portion 203 is provided on the inner circular surface of the reversing plate 202 and is in an arc shape convex toward the direction of the feed bin 102. A plurality of air guide grooves 2031 are arranged in a circular array in the air guide portion 203 and are connected to the transfer plate 201. The air guide grooves 2031 are arranged inclined toward the transfer plate 201 and the angle between the air guide grooves 2031 and the horizontal ground is 35°.

[0041] See also Figures 2 to 3 and Figure 6 , Figure 7 The stirring assembly 3 includes a stirring plate 301, and a stirring plate 301 is provided between two adjacent material transfer plates 201. One end of the stirring plate 301 abuts against the counter plate 202, and a gap 207 is provided between the other end and the upper set of counter plates. The stirring plate 301 is oriented toward the feed bin 102 with respect to the horizontal ground at an angle of 35°, and the gap 207 is composed of the distance between the stirring plate 301 and the counter plate 202. The stirring plate 301 is provided with an arc surface 206, and the arc surface 206 abuts against the counter plate 202. The closest distance between the plates 202 is 9 mm and the farthest distance is 51 mm. The counter plate 202 is provided with convex circles 204 in a circular array, and the convex circles 204 are inclined toward the gap 207. The transfer plate 201 is also provided with a groove 304 that matches the convex circle 204. The stirring plate 301 is provided with an arc surface part 2061, and the counter plate 202 is provided with a convex circular part 2041. The arc surface 206 and the convex circle 204 are respectively mounted on the arc surface part 2061 and the convex circular part 2041 and are fastened together by bolts.

[0042] See also Figures 1 to 9 , limestone powder and other auxiliary materials are added into the feed bin 102 from the feed hopper, and the materials enter the furnace body 101 from the feed bin 102, and the materials are transported from the front to the back along the length direction of the furnace body 101 through the rotation and tilting of the furnace body 101, until they are discharged from the other end of the furnace body 101. In this process, fuel is sprayed into the furnace body 101 through the burner 103, so that the fuel and air are mixed and burned to generate high-temperature flames, and the heat is transferred to the materials in the furnace body 101, so that the temperature of the materials is gradually increased to complete the required process. When the material transfer component 2 performs the above process, the materials on the material transfer plate 201 are gradually transferred to the furnace body 10 1, during which the setting of the counter plate 202 avoids the influence of the airflow ejected by the burner 103 on the small particle material, and makes the traveling speed of large and small materials consistent. At the same time, the stirring component 3 makes the rolling direction of the material constantly change during the process of falling through the gap 207, thereby realizing the stirring of the material, until the corresponding transfer plate 201 approaches the feed slot 2021, and the material on the transfer plate 201 falls into the transfer chamber 205 along the feed slot 2021, thereby completing a material transportation, thereby ensuring the uniform mixing of the material, ensuring the uniform distribution of the material in the furnace body 101, and the component structure is simple and easy to process and maintain.

[0043] Observing in the direction of the burner 103, the furnace body 101 rotates clockwise at a speed of two revolutions per minute, and the material transfer plate 201 rotates accordingly. Different material transfer plates 201 gradually rotate through the feed slot 2021, and transport the material on the material transfer plate 201 to the material transfer chamber 205 through the feed slot 2021, thereby completing the transportation of the material once, thereby avoiding the influence of the airflow ejected from the burner 103 on the small particle material, and making the travel speed of large and small materials consistent. In this process, because of the setting of the gear set 4 and the realization of the relative rotation of the counter plate 202 and the furnace body 101, the material can be stirred at a high frequency and multiple times before entering the material transfer chamber 205, thereby ensuring the material conversion efficiency;At the same time, the relative rotation between the counter plate 202 and the furnace body 101 will make the furnace body 101 unstable, thereby affecting the stirring effect of the materials. The gear meshing transmission method is adopted to improve the rotation stability of the counter plate 202. At the same time, its structure is simple. Only the corresponding transmission ratio needs to be set to obtain the appropriate rotation speed for stirring the materials during transportation. The gear part 1 401 is arranged in the toothed disc 402 in the shape of an internal gear. When the furnace body 101 rotates clockwise, the gear part 2 404 drives the gear part 1 401 to rotate in the same direction. Since the gear 1 403 and the gear 2 404 are meshed, the gear 2 404 rotates synchronously. At the same time, the rotation direction of the gear 2 404 is relative to that of the gear 1 403, so that the gear When the gear part 1 401 is driven to rotate, the rotation direction of the toothed disc 402 is the same as that of the gear part 2 404, so that the counter plate 202 and the furnace body 101 are opposite to each other. Due to the setting of the counter plate 202, while avoiding the influence of the airflow ejected by the burner 103 on the small particle material, the temperature of the material on the material delivery component 2 will inevitably decrease. By setting the counter plate 202 to rotate relative to the direction of the furnace body 101, the material transportation speed is reduced by 50%, so that the material can reach the corresponding baking temperature, and the gear 1 403 and the gear 2 404 can support the counter plate 202 when transmitting power. This setting can effectively divide The weight of the counter-movement plate 202 is dispersed, vibration and unbalanced load are reduced, thereby ensuring the smooth operation of the furnace body 101 during rotation. In the high temperature environment of 800°C to 1400°C in the furnace body 101, its mechanical transmission control method is more suitable than the servo motor. Due to the setting of the counter-movement plate 202, while avoiding the influence of the airflow ejected by the burner 103 on the small particle material, the temperature of the material on the material delivery component 2 will inevitably decrease. By opening an arc-shaped air guide portion 203 convex toward the direction of the feed bin 102 on the counter-movement plate 202, the high-temperature gas can be gathered to the air guide groove 2031 through the air guide portion 203, and the high-temperature gas passes through the air guide groove The guide 2031 is in direct contact with the material being transported, thereby ensuring that the material is at a suitable conversion temperature. Since the furnace body 101 generally rotates in one direction, the position of the guide groove 2022 pointing to the inner wall of the furnace body 101 is constantly changing, and in conjunction with the rotation of the furnace body 101, the material that first enters the material delivery chamber 205 can be first moved to the next group of material delivery components 2, thereby ensuring that the front and rear materials will not be stacked in one place, resulting in too long or insufficient heating time for some materials, thereby ensuring the uniformity of the baking temperature of the materials, and the setting of the guide groove 2022 slows down the falling speed of the materials, further ensuring the separation of the materials entering the front and rear material delivery chamber 205. ;

[0044] In order to realize the stirring function, a stirring plate 301 is arranged between the material transfer plates 201. Due to the continuous movement of the feed trough 2021, each material transfer plate 201 cannot transfer the material to the material transfer chamber 205 at the moment of obtaining the material. In the above process, due to the inclined setting of the material transfer plate 201, the material in the material transfer plate 201 will roll toward the gap 207 and fall into the stirring plate 301 along the gap 207. Since the stirring plate 301 is arranged in a mirror image with the material transfer plate 201, the falling direction of the material changes. The material is changed so that the material continuously rolls between different stirring plates 301 and transfer plates 201 until the position of the feed trough 2021 rotates to the transfer plate 201 containing the material. The material is able to fall into the feed trough 2021 through the inclination and inertia of the transfer plate 201 and is transported through another set of adjacent transfer plates 201. In the above process, the material is continuously and quickly stirred and tumbled, thereby ensuring uniform mixing of the material and ensuring uniform distribution of the material in the furnace body 101.

[0045] In order to avoid the phenomenon of material agglomeration due to insufficient temperature in the kiln, thereby preventing the material from being fully converted, the gap 207 is set to be close to the diameter of the pellets, so that the large-particle pellets falling into the gap 207 can be rotated and ground by the stirring plate 301 and the counter-moving plate 202 for crushing. Since the diameter of the generated pellets is generally between 10 mm and 50 mm, the arc surface 206 is set on the stirring plate 301. The arc setting of the arc surface 206 ensures that pellets of different sizes can fall into the gap 207. In the process of the pellets falling, the width of the gap is continuously reduced, so that the pellets become smaller and smaller until they disappear. Due to the counter-moving plate 202 The rotation direction makes the convex circle 204 squeeze the pellets from top to bottom, while ensuring that the pellets will not be stuck in the gap 207, the squeezing direction can also promote the crushing of the pellets, thereby ensuring the uniformity of the material. When the arc surface 206 and the convex circle 204 grind the pellet material for a long time, they will gradually wear, so that the width of the gap 207 increases, and the pellet material cannot be fully crushed. After the bolts are pulled out, the worn arc surface 206 and the convex circle 204 can be replaced, and the arc surface 206 and the convex circle 204 of different shapes can also be replaced to grind raw cement for various different purposes, while avoiding the generation of pellets, the quality of the cooked cement after combustion is improved. A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-described embodiment. For those skilled in the art, without departing from the principles and ideas of the present invention, various changes, modifications, substitutions and variations of these embodiments should still fall within the scope of protection of the present invention.

Claims

1. A heat treatment furnace for concrete production, comprising a base (1), a furnace body (101) being arranged on the base (1), a feed bin (102) and a burner (103) being arranged at both ends of the furnace body (101), characterized in that: A plurality of material transfer assemblies (2) are sequentially arranged along the length direction of the furnace body (101), the material transfer assemblies (2) comprising a plurality of material transfer plates (201) fixedly mounted on the inner wall of the furnace body (101) in a circumferential array, and a counter plate (202) that rotates relative to the material transfer plates (201), a material feed trough (2021) is provided on the counter plate (202), a material transfer cavity (205) is formed between the material feed trough (2021) and the next group of material transfer plates (201), and the material transfer plates (201) face the material feed trough (2021) to form a material transfer cavity (205). 1) is arranged obliquely, a stirring assembly (3) is provided between the transfer plates (201), the stirring assembly (3) is symmetrical with the adjacent transfer plates (201) at a mirror angle, and slides in contact with the end surface of the counter plate (202), the transfer assembly (2) uses the rotational power provided by the furnace body (101) to enable the transfer plates (201) to drive part of the raw cement to fall into the transfer chamber (205) through the feed trough (2021), and the raw cement flows between the stirring assembly (3) and the transfer plates (201) by rotation.

2. A heat treatment furnace for concrete production according to claim 1, characterized in that: The material transfer assembly (2) further comprises a gear set (4), wherein the gear set (4) is fixedly connected inside the furnace body (101) and is coaxial with the counter plate (202); while the counter plate (202) is connected to the furnace body (101) via the gear set (4), the gear set (4) supports the weight of the counter plate (202); an end of the material transfer plate (201) away from the feed trough (2021) and an end of the material transfer plate (201) closer to the feed trough (2021) are higher than an end of the material transfer plate (201) and closer to the feed trough (2021); an inclination angle of the material transfer plate (201) toward the feed trough (2021 is the same as an inclination angle of the furnace body (101) relative to the ground.

3. A heat treatment furnace for concrete production according to claim 2, characterized in that: The stirring assembly (3) comprises a stirring plate (301), wherein a stirring plate (301) is provided between two adjacent material transfer plates (201), one end of the stirring plate (301) is in contact with the counter-movement plate (202), and a gap (207) is provided between the other end and the upper set of counter-movement plates (202), and the stirring plate (301) is at an angle of 35° to 45° relative to the horizontal ground in the direction toward the feeding bin (102).

4. A heat treatment furnace for concrete production according to claim 2, characterized in that: An air guide portion (203) and an air guide groove (2031) are provided on the inner ring of the reversing plate (202); the air guide portion (203) is provided on the inner circular surface of the reversing plate (202) and is in an arc shape convex toward the direction of the feed bin (102); a plurality of air guide grooves (2031) are arranged in a circular array in the air guide portion (203) and are connected to the material transfer plate (201); the air guide grooves (2031) are arranged inclined toward the material transfer plate (201) and the angle of the air guide grooves (2031) relative to the horizontal ground is 35° to 45°.

5. A heat treatment furnace for concrete production according to claim 3, characterized in that: The gap (207) is composed of the distance between the stirring plate (301) and the counter-movement plate (202). The stirring plate (301) is provided with a curved surface (206). The closest distance between the curved surface (206) and the counter-movement plate (202) is 9 mm and the farthest distance is 51 mm. The counter-movement plate (202) is provided with convex circles (204) in a circular array. The convex circles (204) are inclined toward the inside of the gap (207). The transfer plate (201) is also provided with a groove (304) that matches the convex circle (204).

6. A heat treatment furnace for concrete production according to claim 2, characterized in that: The gear set (4) comprises a gear part (401), a toothed disc (402), a gear one (403), a gear two (404) and a transmission rod (405); the transmission rod (405) is arranged at the center of the furnace body (101) and is fixedly connected to the furnace body (101); the toothed disc (402) is fixedly connected to the counter plate (202) and is rotatably mounted on the transmission rod (405); the gear one (403) is fixedly connected to the transmission rod (405) and is rotatably mounted in the toothed disc (402); the gear part (401) is arranged on the inner circle of the toothed disc (402) and is connected to the gear one (403) via the gear two (404).

7. A heat treatment furnace for concrete production according to claim 2, characterized in that: The positions of the two adjacent feed grooves (2021) are radially symmetrical with respect to the furnace body (101); the feed groove (2021) is further provided with a material guide groove (2022) facing the material transfer cavity (205); the material guide groove (2022) is connected to the inner wall of the furnace body (101) at the material transfer cavity (205); and the two adjacent material guide grooves (2022) are symmetrical with respect to the center of the axial plane of the furnace body (101).

8. A heat treatment furnace for concrete production according to claim 5, characterized in that: The transfer plate (201) is provided with an arc surface portion (2061), and the reversing plate (202) is provided with a convex circular portion (2041). The arc surface (206) and the convex circular portion (204) are respectively sleeved on the arc surface portion (2061) and the convex circular portion (2041) and are fastened and connected by bolts.

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