CN207850031U - Continous way electric heating calcining kiln - Google Patents

Abstract

The utility model provides a continuous electric heating roasting kiln, which is used to solve the problems of low production efficiency, poor product quality and environmental pollution in the prior art. A continuous electric heating kiln, comprising: a kiln body, a heating system, the heating system is located in the kiln body, the heating system includes a preheating section, a roasting section and a cooling section; a conveying system, the conveying system is used for A plurality of products are conveyed from the inlet of the kiln body to the outlet of the kiln body, and the products pass through the preheating section, the roasting section and the cooling section in sequence. It adopts the conveying system to transport the products through the preheating section, roasting section and cooling section in order to avoid extreme cold and extreme heat, and in the specific heat treatment, it can realize continuous conveying and improve production efficiency.

Description

Continuous Electric Roasting Kiln

technical field

The utility model relates to a heat treatment device, in particular to a continuous electric heating roasting kiln.

Background technique

At present, the known electric heat treatment kilns are intermittent, that is, the products that need to be heated are first pushed into the kiln by a drying car manually or semi-manually, and then heated, roasted, and cooled according to the heating curve, and then the finished product is dried manually. The car is rolled out and sent to the finished product warehouse. However, the output of this intermittent heat treatment kiln is small, the high-temperature kiln depends on natural cooling, the thermal system is frequently adjusted, the thermal efficiency is low, the main manual operation, low automation level, high labor intensity, serious environmental pollution, and low product quality. In order to save energy and reduce emissions, improve product quality and output, reduce production costs, improve economic benefits, etc., the utility model aims to achieve this goal.

At the same time, in the existing heat treatment, the temperature control is not precise enough, and extreme cold and extreme heat are prone to occur, resulting in cracks in the product, uneven internal structure density, and low qualified rate of finished products.

Contents of the invention

In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a continuous electric heating kiln for solving the problems of low production efficiency, poor product quality and environmental pollution in the prior art.

In order to achieve the above purpose and other related purposes, the utility model provides a continuous electric heating kiln, which is characterized in that it includes:

Cellar body,

A heating system, the heating system is located in the kiln body, the heating system includes a preheating section, a roasting section and a cooling section; a conveying system, the conveying system is used to send at least one product from the entrance of the kiln body The kiln body is sent to the outlet of the kiln body after passing through the preheating section, roasting section and cooling section in turn.

It adopts the conveying system to transport the products through the preheating section, roasting section and cooling section in order to avoid extreme cold and extreme heat, and in the specific heat treatment, it can realize continuous conveying and improve production efficiency.

Further, the preheating section, the roasting section and the cooling section all include heating elements and a temperature controller for controlling the power of the heating elements.

It can accurately control the temperature to ensure the quality of processing. Each section separately controls the heating element through the temperature controller to ensure that the temperature of each section is controlled within a certain range to ensure the quality of the product. At the same time, each area is individually temperature controlled. When more products pass through the three temperature sections in turn , to ensure that each product can go through the same process of preheating, heat preservation and cooling without differences, improving production efficiency and ensuring the quality of heat treatment.

Further, there are multiple heating elements and corresponding temperature controllers in the preheating section, the calcining section and the cooling section.

When the small-range temperature adjustment through the power change of the heating element itself cannot meet the requirements, it can be adjusted in combination with other heating elements to increase the adjustment range.

Further, the preheating section, the roasting section and the cooling section are each provided with at least one temperature sensor.

It can collect the ambient temperature and adjust it in real time according to the ambient temperature.

Further, each of the thermostats and temperature sensors on the preheating section are electrically connected to a preheating controller, and each of the thermostats and temperature sensors on the roasting section are electrically connected to A heat preservation controller, each of the temperature controllers and the temperature sensors on the cooling section is electrically connected to a cooling controller.

Three-stage independent temperature control, simple control, to ensure that the temperature in each area can be adjusted independently and accurately, the temperature is collected in real time through the temperature sensor, and then transmitted to the controller, the controller adjusts the heating power in real time according to the temperature data, and realizes accurate closed-loop control .

Further, the temperature sensor is arranged on the top of the inner wall of the kiln, and the heating element is arranged on the inner wall of the kiln.

The hot air circulates upwards, the temperature sensor is set on the top to collect temperature data more accurately, and the heating element is set on the side wall, so that both sides of the product can be heated.

Further, the conveying system includes a driving element and a plurality of moving trolleys for placing products, and the driving element is used to drive each of the moving trolleys to pass through the preheating section, the roasting section and the cooling section in sequence .

Further, the conveying system also includes a guide rail, the guide rail is a linear guide rail, a plurality of the moving trolleys are arranged in sequence on the guide rail, the driving part is a hydraulic cylinder, and the driving part is located at the bottom of the cellar body. import location.

Ensure that the motion track of the sports car is fixed, and play an effective guiding role, and driven by a hydraulic cylinder, the driving force is large, and the action is single, which can effectively promote the linear and synchronous movement of the sports car.

Further, the entrance and exit of the cellar body are provided with cellar doors, and among the preheating section and the cooling section of the cellar body, one of them is connected with an exhaust fan, and the other is connected with an intake fan.

Further, a plurality of first ventilation ducts are arranged between the exhaust fan and the preheating section, and a plurality of second ventilation ducts are arranged between the inlet fan and the cooling section, each of the first ventilation ducts and the first ventilation ducts There are regulating valves on the two ventilation pipes.

Further, the cellar door is driven by a motor, the motor, the exhaust fan and the intake fan are controlled by a master controller, and the regulating valve is electrically connected to the master controller.

Ensure that the inside of the cellar door is closed and effectively insulated. At the same time, when the product needs to be transported, the cellar door is opened to achieve continuous transportation and ensure the heat preservation effect. The fan discharges the volatile substances generated by the heating of the product, and at the same time plays the role of constant pressure. At the same time, the auxiliary temperature can be adjusted through the amount of exhaust air. The temperature of the preheating section and the cooling section is lower than that of the roasting section. Fans are installed in these two places, which is beneficial to temperature control. The size of the exhaust air volume is controlled by the regulating valve, and the control result is more precise.

As mentioned above, the continuous electric heating roasting kiln of the present invention has the following beneficial effects: it can carry out continuous transportation, and through the three-stage arrangement, it avoids extreme cold and extreme heat, and improves the quality of the product.

Description of drawings

Fig. 1 shows the side view of the continuous electric heating kiln of the present invention.

Fig. 2 shows the top view of the continuous electric heating kiln of the present invention.

Fig. 3 is a schematic diagram showing the cross-section of the continuous electric heating kiln of the present invention.

Fig. 4 is a schematic diagram showing the cooperation of the heating system 2 and the kiln body 1 of the continuous electric heating kiln of the present invention.

Fig. 5 is a schematic diagram of the temperature control method of the continuous electric heating kiln of the present invention.

Detailed ways

The implementation of the present utility model is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

See Figures 1 through 5. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the utility model Therefore, it has no technical substantive meaning. Any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of The technical content disclosed by the utility model must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable range of the utility model, and the change or adjustment of its relative relationship, without any substantial change in the technical content, shall also be regarded as the practicable scope of the utility model.

Please refer to FIG. 1 to FIG. 4 , the utility model provides a continuous electric heating kiln, including: a kiln body 1 , a heating system 2 and a conveying system 3 . The heating system 2 is located in the kiln body 1, and the heating system 2 includes a preheating section 21, a roasting section 22 and a cooling section 23; the conveying system 3 is used to transport a plurality of products 4 from the kiln body 1 The inlet of the kiln is transported to the outlet of the kiln body 1, and the product 4 passes through the preheating section 21, the roasting section 22 and the cooling section 23 in sequence. Here, the preheating section 21, the roasting section 22 and the cooling section 23 can be arranged in a straight line, arc or other arrangement, as long as the conveying system 3 passes through these three sections in sequence.

In a preferred embodiment, referring to Fig. 1, Fig. 2 and Fig. 4, the heating system 2 is electric heating, and the preheating section 21, the roasting section 22 and the cooling section 23 all include a temperature controller 24 and The heating element 25 , each of the temperature controllers 24 can adjust the heating power of the corresponding heating element 25 . The temperature controller 24 and the heating element 25 of the preheating section 21, the roasting section 22 and the cooling section 23 are provided with one or more, each of the preheating sections 21 The temperature controllers 24 are electrically connected to a preheating controller, and the temperature controllers 24 on the roasting section 22 are electrically connected to a heat preservation controller. Each of the temperature controllers 24 is electrically connected to a cooling controller. The top of the cellar body 1 is provided with a temperature sensor 14. Since the hot air circulates upwards, the temperature collected on the top of the cellar body is more accurate. The preheating section 21, the roasting section 22 and the cooling section 23 are all Correspondingly be provided with one or more temperature sensors 14, in the preheating section 21, the temperature sensor 14 collects the temperature in the preheating section 21, then transmits the temperature data to the preheating controller, and the preheating controller receives the temperature data, and will real-time The temperature data is compared with the preset temperature. When the real-time temperature data is lower than the preset temperature, the preheating controller transmits instructions to each thermostat 24, and each thermostat 24 adjusts the temperature of the corresponding heating element. , control the heating element 25 to increase the power, when the power of a single 25 heating element 25 still cannot meet the requirement of temperature rise, the preheating controller controls a plurality of thermostats 24 to open a plurality of heating elements 25 to realize power superposition, when the temperature sensor 14 Stop heating when the collected temperature data is equal to the preset temperature, and repeat this process. When the temperature needs to be lowered, the preheating controller issues an instruction to reduce the number of heating elements 25 and reduce the power of a single heating element 25. Closed-loop control ensures that the temperature of each area is kept within a constant range. The thermal insulation controller and cooling controller work on the same principle, so I won’t repeat them here.

In a preferred embodiment, please refer to FIG. 2 and FIG. 3 , the conveying system 3 includes a driving member 31 and a plurality of moving cars 32, the driving member 31 is hydraulically driven, and the driving member 31 drives each of the moving cars 32 to pass through in turn. The preheating section 21 , the roasting section 22 and the cooling section 23 , the product 4 is placed on the moving trolley 32 . The conveying system 3 also includes a guide rail 33 , which is a linear guide rail, and the guide rail 33 is used to guide the moving trolley 32 . When working, the moving trolley 32 is placed on the guide rail 33, and the product 4 is placed on the moving trolley 32. The driving part 31 is a hydraulic cylinder, and the hydraulic cylinder pushes a moving trolley 32 to move on the track. so that when a trolley is pushed, the trolleys on the entire guide rail 33 will move straight forward, so that the products on the moving trolley 32 will enter the roasting section 22 after being preheated, and after a period of treatment in the roasting section 22, Then enter the cooling section 23, the period of staying in the preheating section 21, roasting section 22 and cooling section 23 is consistent, so that when the product passes through three temperature sections in sequence, the product can be continuously produced, and the production efficiency is improved. .

In a preferred embodiment, please refer to FIG. 2 and FIG. 3 , the entrance and exit of the cellar body 1 are provided with a cellar door 11 , the cellar door 11 is driven by a motor, and the cellar door 11 is driven by a motor. The cellar body 1 is provided with an exhaust fan 12 and an intake fan 13, and the exhaust fan 12 and the cellar body 1 communicate with the interior of the cellar body 1 through a ventilation duct. There are more than one ventilation ducts for the cellar body 1 and the exhaust fan 12, and there are multiple ventilation ducts for the cellar body 1 and the air intake fan 13, and each ventilation duct is provided with a regulating valve. The regulating valve realizes the effective control of the air intake, and the exhaust fan 12 and the intake fan 13 communicate with the preheating section 21 and the cooling section 23 respectively. The hydraulic cylinder, motor, exhaust fan 12, intake fan 13 and regulating valve are all electrically connected to the master controller to realize joint control. When the product needs to enter the next cycle, the master controller controls the motor to open the cellar door, and then controls the hydraulic pressure. The cylinder pushes the moving car to realize chain control. The exhaust fan 12 and the intake fan 13 are activated when the cellar door is closed. When the cellar door 11 is closed, because the product 4 is heated, it is easy to produce various volatile substances. When dealing with the heat treatment of magnesia-carbon bricks, the organic binder of magnesia-carbon bricks will volatilize. Of course, the utility model can also be applied to other products, such as the heat treatment of metals. Here, only as an example, 12 exhaust fans and 13 intake fans Harmful gas is discharged, and the temperature sensor can also be electrically connected to the master controller. When the temperature is high, the master controller controls the switch of the regulating valve according to the data received from the temperature sensor to realize the auxiliary cooling function.

Please refer to Fig. 5, a kind of temperature control method, comprises heating step and cooling step;

The temperature raising step includes the following steps: 1. Increase the power of a single heating element, 2. Increase the number of heating elements, 3. Reduce the speed of air intake and exhaust;

The cooling step includes the following steps: 1. reducing the power of a single heating element, 2. reducing the number of heating elements, and 3. increasing the speed of air intake and exhaust.

The driving part drives the moving trolley, the cellar door motor drives the switch of the cellar door, and the regulating valve controls the opening and closing of the ventilation channel. The three need to be controlled in association, and the control is carried out through a master controller, and the master controller also needs to receive the preheating Section 21, the temperature data of the temperature sensor 14 on the roasting section 22 and the cooling section 23, and then adjust the switch of the regulating valve according to the real-time temperature to realize the control of exhaust and air intake speed.

To sum up, the utility model can be continuously conveyed, improves the production efficiency, and can ensure the effect of heat preservation. Through the three-stage independent temperature control area, the quality of the product is improved. At the same time, the fan can discharge the pressure and reduce the The effect of exhaust gas and auxiliary temperature control. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial application value.

The above-mentioned embodiments only illustrate the principles and effects of the present utility model, but are not intended to limit the present utility model. Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the utility model should still be covered by the claims of the utility model.

Claims (10)

1. a kind of continous way electric heating calcining kiln, which is characterized in that including：

Body (1) is stored,

Heating system (2), the heating system (2) are located in the cellar for storing things body (1), and the heating system (2) includes preheating section (21), furnace zone (22) and cooling section (23)；

Transport system (3), the transport system (3) are used at least one product (4) being sent into institute from the import of the cellar for storing things body (1) It states in cellar for storing things body (1), and is sent successively to the cellar for storing things body (1) after the preheating section (21), furnace zone (22) and cooling section (23) Outlet.

2. continous way electric heating calcining kiln according to claim 1, it is characterised in that：The preheating section (21), the roasting Section (22) and the cooling section (23) include the temperature of heater element (25) and the power for controlling the heater element (25) Control device (24).

3. continous way electric heating calcining kiln according to claim 2, it is characterised in that：The preheating section (21), the roasting The heater element (25) and the corresponding temperature controller (24) of section (22) and the cooling section (23) are multiple.

4. continous way electric heating calcining kiln according to claim 2, it is characterised in that：The preheating section (21), furnace zone (22) and cooling section (23) is respectively equipped at least one temperature sensor (14).

5. continous way electric heating calcining kiln according to claim 4, it is characterised in that：Each institute on the preheating section (21) It states temperature controller (24) and temperature sensor (14) is electrically connected at a preheating controller, it is each on the furnace zone (22) The temperature controller (24) and temperature sensor (14) are electrically connected at a preservation and controlling device, each on the cooling section (23) A temperature controller (24) and the temperature sensor (14) are electrically connected at a cooling controller.

6. continous way electric heating calcining kiln according to claim 4, it is characterised in that：Temperature sensor (14) setting exists It stores at the top of body (1) inner wall, heater element (25) setting is in cellar for storing things body (1) madial wall.

7. continous way electric heating calcining kiln according to claim 1, it is characterised in that：The transport system (3) includes driving Part (31) and multiple trolleys (32) for placing product, the actuator (31) is for driving each trolley (32) pass through the preheating section (21), the furnace zone (22) and the cooling section (23) successively；

The transport system (3) further includes guide rail (33), and the guide rail (33) is the linear guide, multiple trolleys (32) It is sequentially arranged on the guide rail (33), the actuator (31) is hydraulic cylinder, and the actuator (31) is located at the cellar for storing things body (1) Entrance location.

8. continous way electric heating calcining kiln according to claim 1, it is characterised in that：The inlet and outlet of the cellar for storing things body (1) On be equipped with Jiao Men (11), in the preheating section (21) and cooling section (23) of the cellar for storing things body (1), one of them is connected with exhaust blower (12), another is connected with air inlet fan (13).

9. continous way electric heating calcining kiln according to claim 8, it is characterised in that：The exhaust blower (12) and the preheating More first ventilation shafts are provided between section (21), there are more second ventilations between the air inlet fan (13) and cooling section (23) Pipeline is equipped with regulating valve on each first ventilation shaft and the second ventilation shaft.

10. continous way electric heating calcining kiln according to claim 9, it is characterised in that：The Jiao Men (11) is driven by motor Dynamic, the motor, the exhaust blower (12) and the air inlet fan (13) are controlled by a General controller, the regulating valve and master control Device is electrically connected.