Cement kiln conveying belt fire extinguishing system

Abstract

The utility model relates to a cement kiln conveying belt fire extinguishing system which comprises a conveying belt, a temperature detection mechanism, a cooling mechanism, an opening and closing mechanism and a supply mechanism. The cooling mechanism comprises a container for storing cooling water and is arranged above the conveying belt; the opening and closing mechanism is used for releasing or blocking cooling water stored in the cooling mechanism; the temperature detection mechanism is used for detecting the temperature of the conveying belt, the temperature detection mechanism is electrically connected with the opening and closing mechanism, and when it is detected that the temperature of the conveying belt is higher than a preset safety threshold value, cooling water in the cooling mechanism is released; the supply mechanism is provided with a pipeline communicated with the cooling mechanism, a liquid level sensor is arranged in the container for storing the cooling water, and the liquid level sensor is used for monitoring the water level of the cooling water in the container; the supplementing mechanism is electrically connected with the liquid level sensor, and when the water level of the cooling water is lower than the preset water level, the supplementing mechanism supplements the cooling water to the cooling mechanism. The cooling device is large in cooling force and timely in cooling.

Description

Technical Field

[0001] The utility model relates to the technical field of cement kiln cooling equipment, and particularly relates to a fire-fighting system for a conveying belt of a cement kiln. Background Art

[0002] Cement: A powdery hydraulic inorganic binder. After being mixed with water and stirred, it becomes a slurry, which can harden in the air or in water and can firmly cement materials such as sand and stones together. As an important binder, cement is widely used in civil engineering, water conservancy, national defense and other projects.

[0003] The cement production process is a complex physical and chemical reaction process. During the calcination process, the premix is fed into the cement kiln for high-temperature calcination. In the cement kiln, the premix is heated by high temperature (about 1400°C to 1500°C), causing a chemical reaction to form clinker. Therefore, generally, the temperature at the inlet of the cement kiln is very high. If the conveying belt is not cooled in time, during the process of being conveyed by the conveying belt, the temperature of the alternative fuel will also rise accordingly. It is very easy for the conveying belt to catch fire together with the alternative fuel, damaging the structure of the cement kiln. If the fire is not extinguished in time, it will pose a great safety hazard and threaten the lives of the staff.

[0004] The existing cooling measures for the conveying belt of the cement kiln are not timely enough and the cooling effect is not good. Therefore, a fire-fighting system for the conveying belt of the cement kiln is needed, which can ensure that the temperature of the conveying belt is within the safe value range during the entire conveying process of the material on the belt. Summary of the Utility Model

[0005] To solve the above problems, the utility model provides a fire-fighting system for a conveying belt of a cement kiln, which has a good cooling effect, is timely and effective in cooling, and ensures that the temperature of the conveying belt is within the safe range.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a fire-fighting system for a conveying belt of a cement kiln, including a conveying belt, a temperature detection mechanism, a cooling mechanism, an opening and closing mechanism and a replenishment mechanism;

[0007] The cooling mechanism includes a container for storing cooling water, and the cooling mechanism is arranged above the conveying belt;

[0008] The opening and closing mechanism is used to release or block the cooling water stored in the cooling mechanism;

[0009] The temperature detection mechanism is used to detect the temperature of the conveying belt, and the temperature detection mechanism is electrically connected to the opening and closing mechanism. When it detects that the temperature of the conveying belt is higher than the preset safety threshold, the temperature detection mechanism controls the opening and closing mechanism to open and release the cooling water in the cooling mechanism;

[0010] The replenishment mechanism is provided with a pipeline communicating with the cooling mechanism. A liquid level sensor is arranged in the container for storing cooling water, and the liquid level sensor is used for monitoring the water level of the cooling water in the container;

[0011] The replenishment mechanism is electrically connected to the liquid level sensor. When the water level of the cooling water is lower than the preset water level, the replenishment mechanism replenishes the cooling water to the cooling mechanism.

[0012] Further, the temperature detection mechanism is an infrared temperature measurement camera, and the infrared temperature measurement camera is installed above the conveyor belt, and the rotation amplitude set by the infrared temperature measurement camera enables the monitoring range of the infrared temperature measurement camera to cover the entire conveyor belt.

[0013] Further, the container for storing cooling water is a barrel-shaped container, and the opening and closing mechanism is a gate valve arranged at the bottom of the barrel-shaped container. The infrared temperature measurement camera is electrically connected to the gate valve. When the infrared temperature measurement camera detects that the temperature of the conveyor belt is higher than the preset safety threshold, the infrared temperature measurement camera controls the gate valve to open and release the cooling water in the barrel-shaped container.

[0014] Further, there are three barrel-shaped containers, and the three barrel-shaped containers are arranged along the conveying direction of the conveyor belt and are respectively arranged at the front section, middle section and tail section of the conveyor belt. A gate valve is arranged at the bottom of each barrel-shaped container, and the infrared temperature measurement camera is electrically connected to each gate valve.

[0015] Further, the infrared temperature measurement camera is electrically connected to the gate valve through a cylinder, and the cylinder is used for driving the opening and closing of the gate valve.

[0016] Further, a water pump is arranged on the pipeline where the replenishment mechanism communicates with the cooling mechanism. The water pump is electrically connected to the liquid level sensor. When the water level of the cooling water is lower than the preset water level, the water pump is turned on to pump external water source through the pipeline and replenish it to the cooling mechanism.

[0017] Further, a spray pipeline parallel to the conveyor belt is also arranged above the conveyor belt. A plurality of nozzles are arranged on the spray pipeline. The spray pipeline communicates with the cooling mechanism and also communicates with the replenishment mechanism.

[0018] Further, the nozzles are arranged at equal intervals along the conveying direction of the conveyor belt.

[0019] Further, a support parallel to the conveyor belt is arranged above the conveyor belt, and the container for storing cooling water is hung on the support. The opening of the container for storing cooling water faces the upper surface of the conveyor belt when releasing the cooling water.

[0020] The technical solution of the present utility model has the following advantages:

[0021] 1. The present utility model detects the temperature of the conveyor belt through the temperature detection mechanism, which plays a role in timely warning. When the temperature of the conveyor belt is too high, that is, exceeding the preset safe temperature, the opening and closing mechanism can be timely activated to release the cooling water in the cooling mechanism to cool the conveyor belt in time, eliminating the possibility of the conveyor belt burning due to excessive temperature.

[0022] 2. The present utility model stores a large amount of cooling water by setting a container for storing cooling water above the conveyor belt. When it is necessary to cool the conveyor belt, the cooling water is sufficient. Compared with only setting sprinkler heads for sprinkling, the cooling intensity is greater and the cooling effect is faster, and it is more effective in cooling the super-high temperature working scenario at the inlet of the cement kiln.

[0023] 3. The present utility model not only sets a cooling mechanism, but also connects the cooling mechanism to a replenishment mechanism, and conveys external cooling water to the cooling mechanism through the replenishment mechanism, eliminating the situation that the water shortage cannot continue to cool down when the temperature has not dropped to the safe temperature, and improving the cooling effect.

[0024] It should be understood that all combinations of the foregoing concepts and additional concepts described in more detail below can be regarded as part of the inventive subject matter of the present disclosure as long as such concepts do not conflict with each other.

[0025] The foregoing and other aspects, embodiments, and features of the teachings of the present utility model can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present utility model, such as features and / or beneficial effects of exemplary embodiments, will be apparent in the following description, or will be learned through practice of the specific embodiments according to the teachings of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are not drawn to scale in accordance with actual reference objects. In the drawings, each identical or approximately identical component shown in each figure can be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the present utility model will be described by way of example and with reference to the drawings, wherein:

[0027] Figure 1 is a schematic structural diagram of the conveyor belt fire protection system of the cement kiln of the present utility model.

[0028] Figure 2 is Figure 1 a partial enlarged schematic view of part A in

[0029] Explanation of reference numerals in the drawings:

[0030] 100 - Cooling mechanism; 200 - Conveyor belt; 300 - Temperature detection mechanism; 400 - Support; 500 - Sprinkler; 101 - Barrel-shaped container; 102 - Gate valve; 103 - Cylinder. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art belonging to the field of the present utility model.

[0032] The "first", "second" and similar terms used in the specification and claims of the patent application of the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "a", "an" or "the" and similar terms do not denote a quantity limitation, but mean that there is at least one. The terms such as "comprising" or "including" are intended to indicate that the elements or items appearing before "comprising" or "including" cover the features, wholes, steps, operations, elements and / or components listed after "comprising" or "including", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their combinations. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0033] In a cement kiln, the premix is heated at a high temperature (about 1400°C to 1500°C), causing chemical reactions to form clinker. Therefore, generally, the temperature at the inlet of the cement kiln is very high. If the conveyor belt is not cooled in time, during the process of the alternative fuel being conveyed by the conveyor belt, the temperature will also increase accordingly. It is very easy for the conveyor belt to catch fire together with the alternative fuel, damaging the structure of the cement kiln. If the fire is not extinguished in time, it will pose a great safety hazard and threaten the lives of the staff.

[0034] The existing cooling measures for the conveyor belt of the cement kiln are not timely enough and the cooling intensity is small. Conventional cooling facilities cannot meet the timely cooling of the ultra-high temperature of the cement kiln.

[0035] Based on the above problems, an embodiment of the present utility model provides a fire protection system for a conveyor belt of a cement kiln, which has a large cooling strength and timely cooling, and can continuously cool the conveyor belt to a safe temperature.

[0036] Please refer to Figure 1 As shown, an embodiment of the present utility model provides a fire protection system for a conveyor belt of a cement kiln, including a conveyor belt 200, a temperature detection mechanism 300, a cooling mechanism 100, an opening and closing mechanism, and a replenishment mechanism;

[0037] The cooling mechanism 100 includes a container for storing cooling water, and the cooling mechanism 100 is arranged above the conveyor belt 200;

[0038] The capacity of the container for storing cooling water can store a large amount of cooling water. When it is necessary to cool the conveyor belt 200, the amount of cooling water is sufficient. Compared with only setting sprinkler heads for sprinkling, the cooling strength is greater and the cooling effect is faster. It is more effective in cooling the ultra-high temperature working scenario at the inlet of the cement kiln.

[0039] The opening and closing mechanism is used to release or block the cooling water stored in the cooling mechanism 100; when it is not necessary to cool the conveyor belt 200, the opening and closing mechanism blocks the cooling water stored in the cooling mechanism 100 for future needs.

[0040] The temperature detection mechanism 300 is used to detect the temperature of the conveyor belt 200, and the temperature detection mechanism 300 is electrically connected to the opening and closing mechanism. When it is detected that the temperature of the conveyor belt 200 is higher than a preset safety threshold, the temperature detection mechanism 300 controls the opening and closing mechanism to open and release the cooling water in the cooling mechanism 100.

[0041] In an embodiment of the present utility model, by setting the temperature detection mechanism 300 to detect the temperature of the conveyor belt 200, it plays a role of timely warning. When the temperature of the conveyor belt 200 is too high, that is, exceeds the preset safety temperature, the opening and closing mechanism can be timely opened to release the cooling water in the cooling mechanism 100 to timely cool the conveyor belt 200, eliminating the possibility of the conveyor belt 200 burning due to excessive temperature.

[0042] The replenishment mechanism is provided with a pipeline communicating with the cooling mechanism 100, and a liquid level sensor is arranged in the container for storing cooling water, and the liquid level sensor is used to monitor the water level of the cooling water in the container.

[0043] Since the conveyor belt 200 for the cement kiln is in a high-temperature working scenario, compared with the working scenario of the conveyor belt in the coal mine shaft, its working temperature is higher, and it is more likely to cause a fire. It takes a long time to cool down to a safe temperature in a timely manner, so more cooling water is consumed. In the embodiment of the present invention, not only the cooling mechanism 100 is provided, but also the cooling mechanism is connected to the supply mechanism, and the external cooling water is transported to the cooling mechanism 100 through the supply mechanism, eliminating the situation where the water shortage occurs before the temperature drops to the safe temperature and the cooling cannot continue, and improving the cooling effect.

[0044] The supply mechanism is electrically connected to the liquid level sensor. When the water level of the cooling water is lower than the preset water level, the supply mechanism replenishes the cooling water to the cooling mechanism 100.

[0045] By electrically connecting the liquid level sensor to the supply mechanism, when the cooling water in the cooling mechanism 100 is insufficient, the cooling water can be automatically replenished in a timely manner to ensure that the water level of the cooling water in the cooling mechanism 100 is always at a high level.

[0046] In some embodiments of the present invention, the temperature detection mechanism 300 is an infrared temperature measurement camera, and the infrared temperature measurement camera is installed above the conveyor belt 200, and the rotation amplitude set by the infrared temperature measurement camera enables the monitoring range of the infrared temperature measurement camera to cover the entire conveyor belt 200.

[0047] The temperature detection mechanism 300 uses an infrared temperature measurement camera, which has a wide monitoring range and high accuracy. Through infrared imaging, the temperature conditions of various places on the conveyor belt 200 can be intuitively observed. By real-time monitoring the temperature dynamics of the conveyor belt 200, it is possible to predict which places will soon exceed the safe temperature value and make preparations for cooling in advance.

[0048] In some embodiments of the present invention, the container for storing the cooling water is a barrel-shaped container 101, the opening and closing mechanism is a gate valve 102 provided at the bottom of the barrel-shaped container 101, and the infrared temperature measurement camera is electrically connected to the gate valve 102. When the infrared temperature measurement camera detects that the temperature of the conveyor belt 200 is higher than the preset safety threshold, the infrared temperature measurement camera controls the gate valve 102 to open and release the cooling water in the barrel-shaped container 101.

[0049] The gate valve 102 is suitable for a valve port with a larger diameter. In the embodiment of the present invention, it can be applied to the bottom of the large-diameter barrel-shaped container 101, effectively achieving the effect of quickly releasing the cooling water at one time, and having a good sealing effect when the cooling water does not need to be released.

[0050] When the gate valve 102 is opened, the cooling water in the barrel-shaped container 101 pours onto the conveyor belt 200 all at once. The impact force is large, and the amount of water is more than that of the water sprayed by the nozzle. The cooling is more timely, and it can also extinguish the fire on the conveyor belt 200 in time.

[0051] In some embodiments of the present utility model, three barrel-shaped containers 101 are provided. The three barrel-shaped containers 101 are arranged along the conveying direction of the conveyor belt 200 and are respectively arranged at the front section, middle section and tail section of the conveyor belt 200. A gate valve 102 is provided at the bottom of each barrel-shaped container 101, and the infrared temperature measuring camera is electrically connected to each gate valve 102.

[0052] Barrel-shaped containers 101 filled with cooling water are arranged in different sections of the conveyor belt 200, so that the cooling is more comprehensive and thorough, avoiding local overheating of the conveyor belt 200 and untimely cooling.

[0053] In some embodiments of the present utility model, the infrared temperature measuring camera is electrically connected to the gate valve 102 through a cylinder 103, and the cylinder 103 is used to drive the opening and closing of the gate valve 102.

[0054] In some embodiments of the present utility model, a water pump is provided on the pipeline where the replenishment mechanism communicates with the cooling mechanism 100. The water pump is electrically connected to the liquid level sensor. When the water level of the cooling water is lower than the preset water level, the water pump is turned on to extract external water source and replenish it to the cooling mechanism 100 through the pipeline, ensuring sufficient cooling water in the cooling mechanism 100.

[0055] In some embodiments of the present utility model, a spray pipeline parallel to the conveyor belt 200 is further provided above the conveyor belt 200. A plurality of nozzles 500 are provided on the spray pipeline. The spray pipeline is communicated with the cooling mechanism 100 and also communicated with the replenishment mechanism.

[0056] The water source of the nozzle 500 comes from the cooling water in the cooling mechanism 100. When the cooling mechanism 100 is not working, the nozzle 500 is turned on for spraying, which can be used as a conventional cooling operation of the conveyor belt 200 under normal conditions.

[0057] In some embodiments of the present utility model, the nozzles 500 are arranged at equal distances along the conveying direction of the conveyor belt 200 to cool the conveyor belt 200 evenly.

[0058] In some embodiments of the present utility model, a bracket 400 parallel to the conveyor belt 200 is provided above the conveyor belt 200. The container for storing cooling water is suspended on the bracket 400, and the opening of the container for storing cooling water faces the upper surface of the conveyor belt 200 when releasing the cooling water.

[0059] In summary, the fire protection system designed for the conveyor belt of the cement kiln in the embodiment of the present utility model can achieve rapid cooling and continuous cooling, and solves the problem that the conveyor belt will burn due to excessive temperature.

[0060] Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Those with ordinary knowledge in the technical field to which the present utility model pertains can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to what is defined by the claims.

Claims

1. A cement kiln conveyor belt fire protection system, comprising a conveyor belt, characterized in that: Temperature detection mechanism, cooling mechanism, opening and closing mechanism and supply mechanism; The cooling mechanism comprises a container for storing cooling water, and the cooling mechanism is arranged above the conveyor belt; The opening and closing mechanism is used to release or block the cooling water stored in the cooling mechanism; The temperature detection mechanism is used to detect the temperature of the conveyor belt. The temperature detection mechanism is electrically connected to the opening and closing mechanism. When it is detected that the temperature of the conveyor belt is higher than a preset safety threshold, the temperature detection mechanism controls the opening and closing mechanism to open and release the cooling water in the cooling mechanism. The replenishing mechanism is provided with a pipeline connected to the cooling mechanism, and the container storing cooling water is provided with a liquid level sensor, and the liquid level sensor is used to monitor the water level of the cooling water in the container; The replenishing mechanism is electrically connected to the liquid level sensor, and when the water level of the cooling water is lower than a preset water level, the replenishing mechanism replenishes the cooling water to the cooling mechanism.

2. The cement kiln conveyor belt fire protection system according to claim 1 is characterized in that: The temperature detection mechanism is an infrared temperature measuring camera, which is installed above the conveyor belt and the rotation range of the infrared temperature measuring camera is set so that the monitoring range of the infrared temperature measuring camera covers the entire conveyor belt.

3. The cement kiln conveyor belt fire protection system according to claim 2 is characterized in that: The container for storing cooling water is a barrel-shaped container, the opening and closing mechanism is a gate valve arranged at the bottom of the barrel-shaped container, the infrared temperature measuring camera is electrically connected to the gate valve, and when the infrared temperature measuring camera detects that the temperature of the conveyor belt is higher than a preset safety threshold, the infrared temperature measuring camera controls the gate valve to open, releasing the cooling water in the barrel-shaped container.

4. The cement kiln conveyor belt fire protection system according to claim 3 is characterized in that: There are three barrel-shaped containers, which are arranged along the conveying direction of the conveyor belt and correspond to the front section, middle section and tail section of the conveyor belt respectively. A gate valve is provided at the bottom of each barrel-shaped container, and the infrared temperature measuring camera is electrically connected to each gate valve.

5. The cement kiln conveyor belt fire protection system according to claim 3 or 4, characterized in that: The infrared temperature measuring camera is electrically connected to the gate valve via a cylinder, and the cylinder is used to drive the opening and closing of the gate valve.

6. The cement kiln conveyor belt fire protection system according to claim 1, characterized in that: A water pump is provided on the pipeline connecting the supply mechanism to the cooling mechanism. The water pump is electrically connected to the liquid level sensor. When the water level of the cooling water is lower than the preset water level, the water pump is turned on to draw water from an external source and supply it to the cooling mechanism through the pipeline.

7. The cement kiln conveyor belt fire protection system according to claim 1, characterized in that: A spray pipe parallel to the conveyor belt is also provided above the conveyor belt, and a plurality of spray heads are provided on the spray pipe. The spray pipe is connected to the cooling mechanism and is also connected to the supply mechanism.

8. The cement kiln conveyor belt fire protection system according to claim 7, characterized in that: The spray heads are arranged equidistantly along the transport direction of the conveyor belt.

9. The cement kiln conveyor belt fire protection system according to claim 1, characterized in that: A bracket parallel to the conveyor belt is arranged above the conveyor belt, and the container storing cooling water is suspended on the bracket. The opening of the container storing cooling water when releasing cooling water faces the upper surface of the conveyor belt.

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