Cement product cooling device

Abstract

The utility model relates to a cement finished product cooling device, including front end conveying system, mixed heat exchange system and rear end conveying system, the outlet of conveying system is connected with mixed heat exchange system, the mixed heat exchange system outlet is connected with rear end conveying system, the mixed heat exchange system includes heat exchange air pipe, first dust catcher and fan, the cement of front end conveying system delivery enters heat exchange air pipe through scattering material box, and the scattering material box evenly falls into the heat exchange pipeline, and the bottom of heat exchange air pipe is equipped with the opening that supplies cold wind to enter, and the opening top is equipped with the necking, and the cold wind is spouted in the heat exchange pipeline through the necking and enters first dust catcher after mixing heat exchange with cement fully, and the low temperature cement falls into the dust hopper below the dust catcher, and the high temperature gas is discharged through the fan, and the low temperature cement in the dust hopper is delivered to the cement storehouse through rear end conveying system and is stored. The utility model can reduce the cement temperature of grinding mill greatly, and the quality of cement is stable.

Description

Technical Field

[0001] This utility model relates to the field of cement cooling technology, and more specifically, to a cement product cooling device. Background Technology

[0002] Excessive cement temperature not only severely impacts product quality but also leads to poor cement workability, reduced adaptability of admixtures, and concrete cracking. Furthermore, high-temperature cement entering the cement silo can cause condensation and clumping. In particular, key projects such as airport runways, dams, nuclear power plants, and high-speed railways have mandatory requirements for cement temperature. However, some older plants using open-circuit ball mills often have cement outlet temperatures exceeding 140°C in summer, seriously affecting product quality. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a cement product cooling device that can reduce the cement exit temperature rapidly and in large quantities, thereby stabilizing cement quality.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: A cement product cooling device is constructed, comprising a front-end conveying system, a mixing heat exchange system, and a rear-end conveying system. The outlet of the conveying system is connected to the mixing heat exchange system, and the outlet of the mixing heat exchange system is connected to the rear-end conveying system. The mixing heat exchange system includes a heat exchange duct, a first dust collector, and a fan. Cement conveyed by the front-end conveying system enters the heat exchange duct through a spreading box. The spreading box evenly distributes the cement into the heat exchange duct. The bottom of the heat exchange duct has an opening for cold air to enter, and a constriction is provided above the opening. The cold air is sprayed through the constriction and fully mixed with the cement in the heat exchange duct before entering the first dust collector. The low-temperature cement falls into the ash hopper below the dust collector, and the high-temperature gas is discharged through the fan. The low-temperature cement in the ash hopper is transported to a cement silo for storage via the rear-end conveying system.

[0005] According to the above scheme, the front-end conveying system includes a first bucket elevator, a first inclined chute, and a rotary valve. The finished cement produced by the ball mill is conveyed to the first inclined chute through the first bucket elevator. The first inclined chute is connected to a discharge chute equipped with a rotary valve, and the cement is scattered into the discharge box through the rotary valve.

[0006] According to the above scheme, a second inclined trough is provided below the ash hopper, and a second dust collector is installed on the second inclined trough. According to the above scheme, the back-end conveying system includes a second bucket elevator and a third inclined chute, and the cement in the second inclined chute is conveyed to the third inclined chute through the second bucket elevator.

[0007] According to the above scheme, the third inclined chute is connected to the cement silo's inlet bucket elevator, and a third dust collector is installed on the third inclined chute.

[0008] According to the above scheme, the head of the second inclined chute is provided with a box with an end opening, and the second dust collector is located at the tail of the second inclined chute.

[0009] According to the above scheme, the second dust collector is a convection dust collector.

[0010] According to the above scheme, the head of the third inclined chute is provided with a box with an end opening, and the third dust collector is located at the tail of the third inclined chute.

[0011] According to the above scheme, the third dust collector is a convection dust collector.

[0012] According to the above scheme, the top of the first bucket elevator is equipped with a convection duct.

[0013] The cement product cooling device of this utility model has the following beneficial effects: This invention achieves uniform cement dispersion through a dispensing box. The dispensing box evenly distributes the cement into the heat exchange pipes. Cold air, through a constricted nozzle, mixes thoroughly with the cement within the heat exchange pipes before entering the first dust collector. The low-temperature cement falls into the ash hopper below the dust collector, while the high-temperature gas is exhausted by a fan. The low-temperature cement in the ash hopper is then transported to a cement silo for storage. This invention enables high-proportion, high-volume cement production with rapid cooling, stabilizing cement quality and reducing construction risks. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the process for the cement product cooling device of this utility model; Figure 2 This is a schematic diagram of the planar structure of the cement product cooling device of this utility model; Figure 3 This is a schematic diagram of the elevation structure of the cement product cooling device of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the elevation structure of the cement product cooling device of this utility model. Figure 2 ; In the diagram: 1. Original ball mill; 2. First bucket elevator; 3. First inclined chute 1; 4. Rotary valve; 5. Large dust collector; 6. Fan; 7. Second inclined chute; 8. First dust collector; 9. Second bucket elevator; 10. Third inclined chute; 11. Second dust collector; 12. Original inlet bucket elevator; 13. Feeding box; 14. Heat exchange pipe. Detailed Implementation

[0015] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0016] like Figure 1-4 As shown in the figure, a cement product cooling device provided in this embodiment of the present invention includes a front-end conveying system, a mixing heat exchange system, and a rear-end conveying system.

[0017] The finished cement from ball mill 1 enters the front-end conveying system via a chute. The front-end conveying system includes a first bucket elevator 2, a first inclined chute 3, and a rotary valve 4. The front-end outlet connects to a mixing heat exchange system, which includes heat exchange ducts 14, a first dust collector 5, and a fan 6. The outlet of the mixing heat exchange system connects to the rear-end conveying system, which includes a second inclined chute 7, a second bucket elevator 9, a second dust collector 8, a third inclined chute 10, and a third dust collector 11. The outlet of the rear-end conveying system connects to the original inlet bucket elevator 12. The first dust collector 5 is a large dust collector.

[0018] Furthermore, in this embodiment, the top of the first bucket elevator 2 is provided with a convection duct, which can accelerate the airflow inside the first bucket elevator 2 and reduce the cement temperature.

[0019] Furthermore, in this embodiment, the finished cement produced by the ball mill 1 is conveyed to the first inclined chute 3 via the first bucket elevator 2. The first inclined chute 3 is connected to a discharge chute equipped with a rotary valve 4, through which the cement is scattered into the spreading box 13. The spreading box 13 is located at the connection between the heat exchange air duct 14 and the cement chute, which can achieve uniform dispersion of cement.

[0020] Furthermore, in this embodiment, the bottom opening of the heat exchange duct 14 allows cold air to enter, and a constriction is provided above the opening to achieve a jetting effect that accelerates the mixing and heat exchange rate of cement and cold air.

[0021] Furthermore, in this embodiment, the inclination angles of the first inclined chute 2, the second inclined chute 7, and the third inclined chute 10 are set at 5°, and the fan is installed at a speed of 3.0m. 3 / m 2 The air distribution system incorporates a section of housing at the head of the first inclined sluice 2, the second inclined sluice 7, and the third inclined sluice 10, with an opening at the end of the housing. The tail sections of the second inclined sluice 7 and the third inclined sluice 10 are respectively equipped with a second dust collector 8 and a third dust collector 11. The second dust collector 8 and the third dust collector 11 are convection dust collectors, and their airflow is set to twice the airflow of the inclined sluice fan, which increases the heat exchange time of the cement inside the inclined sluice and enhances the convection effect.

[0022] Furthermore, in this embodiment, the overall system has a U-shaped layout, with cement being transported from near the mill outlet to near the mill inlet and back to near the mill outlet. This reduces the floor space required and lowers investment, while also increasing the cement flow time to improve heat exchange and significantly reduce cement temperature.

[0023] The method of using this utility model is as follows: High-temperature cement exiting the mill is conveyed through bucket elevator 2 to the inside of inclined chute 3 and then to the discharge chute. The cement is then scattered into the spreading box 13 through the rotary valve 4 on the chute. After passing through the spreading box 13, the cement is evenly distributed into the heat exchange pipe 14. The cold air in the pipe is sprayed through a constriction nozzle and mixes thoroughly with the cement in the heat exchange pipe 14 before entering the first dust collector 5 for separation. The low-temperature cement falls into the ash hopper, and the high-temperature gas is discharged through the fan 6. The low-temperature cement in the ash hopper is conveyed through the second inclined chute 7 to the second bucket elevator 9 and then through the third inclined chute 10 into the original storage bucket elevator 12 to enter the cement silo for storage.

[0024] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A cooling device for finished cement products, characterized in that, The system includes a front-end conveying system, a mixing heat exchange system, and a rear-end conveying system. The outlet of the conveying system is connected to the mixing heat exchange system, and the outlet of the mixing heat exchange system is connected to the rear-end conveying system. The mixing heat exchange system includes a heat exchange duct, a first dust collector, and a fan. Cement conveyed by the front-end conveying system enters the heat exchange duct through a spreading box, which evenly distributes the cement into the duct. The bottom of the heat exchange duct has an opening for cold air to enter, and a constriction is provided above the opening. The cold air is sprayed through the constriction and mixes thoroughly with the cement in the duct before entering the first dust collector. The low-temperature cement falls into the ash hopper below the dust collector, and the high-temperature gas is discharged by the fan. The low-temperature cement in the ash hopper is transported to a cement silo for storage via the rear-end conveying system.

2. The cement product cooling device according to claim 1, characterized in that, The front-end conveying system includes a first bucket elevator, a first inclined chute, and a rotary valve. The finished cement produced by the ball mill is conveyed to the first inclined chute through the first bucket elevator. The first inclined chute is connected to a discharge chute equipped with a rotary valve, and the cement is scattered into the discharge box through the rotary valve.

3. The cement product cooling device according to claim 1, characterized in that, A second inclined chute is provided below the ash hopper, and a second dust collector is installed on the second inclined chute.

4. The cement product cooling device according to claim 3, characterized in that, The rear-end conveying system includes a second bucket elevator and a third inclined chute, and the cement in the second inclined chute is conveyed to the third inclined chute through the second bucket elevator.

5. The cement product cooling device according to claim 4, characterized in that, The third inclined chute is connected to the cement silo's inlet bucket elevator, and a third dust collector is installed on the third inclined chute.

6. The cement product cooling device according to claim 3, characterized in that, The head of the second inclined chute is provided with a box with an end opening, and the second dust collector is located at the tail of the second inclined chute.

7. The cement product cooling device according to claim 3 or 6, characterized in that, The second dust collector is a convection dust collector.

8. The cement product cooling device according to claim 5, characterized in that, The head of the third inclined chute is provided with a box with an end opening, and the third dust collector is located at the tail of the third inclined chute.

9. The cement product cooling device according to claim 5 or 8, characterized in that, The third dust collector is a convection dust collector.

10. The cement product cooling device according to claim 2, characterized in that, The top of the first bucket elevator is equipped with a convection duct.

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