Kiln body radiant heat recovery device of light-burned magnesia rotary kiln

Abstract

The utility model discloses a light-burned magnesia rotary kiln body radiant heat recovery device which comprises a base, a rotary kiln body, a heat collection pipeline, a supporting seat, a gas guide pipe, an electromagnetic valve, a temperature sensor and a water supply tank. The rotary kiln body and the supporting seat are both installed on the base, the heat collecting pipeline is placed above the supporting seat, the gas guide pipe and the two temperature sensors are arranged on the upper portion of the heat collecting pipeline, a water inlet is formed in one end of the upper portion of the heat collecting pipeline, and the water supply tank is arranged on the upper portion of the water inlet. And a water outlet is formed in the lower part of the other end of the water inlet and the water outlet. The utility model relates to the technical field of rotary kiln heat recovery equipment, in particular to a kiln body radiant heat recovery device for a light-burned magnesia rotary kiln, which is characterized in that heat on the surface of the rotary kiln is transferred to a heat collection pipeline in a heat radiation manner, and the heat collection pipeline transfers the heat to water in the pipeline through heat conduction. According to the utility model, the heat of the kiln body is recycled, so that the energy is saved, and the green development concept is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to light burning magnesium oxide sand rotary kiln heat recovery equipment technical field, especially in kind of light burning magnesium sand rotary kiln body radiation heat recovery device. BACKGROUND

[0002] In light burning magnesium oxide sand process, kiln body temperature reaches 1500-2000 DEG C, when rotary kiln is running, kiln cylinder surface temperature is higher, and a large amount of heat energy is directly emitted to the atmosphere.If this part of heat energy is utilized, can reduce production energy consumption, save production cost.According to relevant research reports, kiln cylinder surface heat dissipation accounts for 34%~56% of entire clinker system surface heat dissipation;3.1%~6.6% of entire clinker system total energy consumption, this part of heat loss is relatively concentrated, is easy to recycle.Use heat radiation mode to transmit heat to heat collection pipeline, and heat collection pipeline further transmits heat to water in pipeline through heat conduction, so that the temperature of water is high, and the heated water can be used in washing, heating and other domestic water aspects, saves energy, and meets the green development concept.

[0003] For rotary kiln body heat recovery and utilization, the present publicly available utility model patent such as CN217465403U recycles and utilizes cement rotary kiln body heat, but it only explains that heat radiation mode is used for heat recovery, and how to ensure the smooth flow of water flow in the pipeline and prevent air cavity from being generated in the pipeline is not explained.The utility model patent optimizes the design of the pipeline structure to ensure that water can be filled and released only by relying on gravitational potential energy without external water pump, and the water can fill the entire pipeline, improving the utilization area of the pipeline. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of light burning magnesium sand rotary kiln body radiation heat recovery device, which can effectively solve the problems in the background art.To achieve the above-mentioned purpose, the utility model adopts the technical scheme: a kind of light burning magnesium sand rotary kiln body radiation heat recovery device, including base, rotary kiln body, heat collection pipeline, water supply tank, support seat, gas guide pipe, solenoid valve, temperature sensor and water supply tank.

[0005] Overheating radiation mode transmits the heat of rotary kiln surface to heat collection pipeline, and heat collection pipeline further transmits heat to water in pipeline through heat conduction.The utility model recycles and utilizes kiln body heat, saves energy and meets the green development concept.

[0006] The rotary kiln body and support seat are both installed on the base, and there is a gap between the support seat and the kiln body.The support seat is composed of a bottom arc plate and a heat collection pipeline fixing platform, and the heat collection pipeline is fixedly connected with the fixing platform by bolts.

[0007] The support seat is provided with a heat collecting pipe, which is connected with the water outlet, and the upper arc-shaped part of the heat collecting pipe is provided with a water inlet, and the water inlet is connected with a water supply tank.

[0008] When water is injected into the heat collecting pipe, the water flows into the heat collecting pipe from the water inlet, and enters the lower pipe first. Since the water supply tank is arranged above, with the continuous increase of the water inflow, under the action of atmospheric pressure, and the excess gas in the pipe can be discharged in time through the gas guide pipe, the liquid level can gradually spread from the lower heat collecting pipe to the upper heat collecting pipe, until the water fills the entire heat collecting pipe. When the water in the pipe is discharged, since the heat collecting pipe is connected with the atmosphere through the gas guide pipe, under the action of atmospheric pressure, and no negative pressure is formed in the pipe, the water after being heated can be smoothly discharged from the water outlet.

[0009] The arrangement of the water inlet above and the water outlet below, and the gas guide pipe, prevents the formation of air cavity in the heat collecting pipe, so that the water fills the entire pipe, and the heat collecting area of the heat collecting pipe is fully utilized. At the same time, the water pump can not be used for pressurized water supply and pressurized water discharge, and the water injection and discharge can be completely realized by gravitational potential energy and atmospheric pressure.

[0010] The heat collecting pipe is provided with two temperature sensors, and the water inlet and the water outlet are provided with electromagnetic valves. The temperature sensor can detect the water temperature in the heat collecting pipe, and the electromagnetic valve can control the opening and closing of the water inlet and the water outlet. When the temperature reaches the target temperature, the electromagnetic valve at the water outlet is opened, and the water in the heat collecting pipe is discharged. When water is injected, the electromagnetic valve at the water inlet is opened, and the electromagnetic valve at the water outlet is closed, and the water injection is completed. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of a radiation heat recovery device for a light-burned magnesite rotary kiln body;

[0012] Figure 2 It is a schematic diagram of the heat collecting pipe of a radiation heat recovery device for a light-burned magnesite rotary kiln body;

[0013] Figure 3 It is a sectional view of the overall structure of a radiation heat recovery device for a light-burned magnesite rotary kiln body;

[0014] Explanation of reference signs: 1, base; 2, rotary kiln body; 3, heat collecting pipeline; 32, upper heat collecting pipeline; 33, lower straight pipeline; 4, supporting seat; 5, air guide pipe; 6, water inlet electromagnetic valve; 7, water outlet electromagnetic valve; 8, water supply tank; 9, temperature sensor; 31, water inlet; 34, water outlet. DETAILED DESCRIPTION

[0015] The utility model discloses a kind of light-burned magnesia rotary kiln body radiant heat recovery devices, which can effectively solve the problems in the background art. To achieve the above object, the technical scheme adopted by the utility model is as follows: a light-burned magnesia rotary kiln body radiant heat recovery device, comprising base 1, rotary kiln body 2, heat collecting pipeline 3, supporting seat 4, air guide pipe 5, water inlet electromagnetic valve 6, water outlet electromagnetic valve 7, water supply tank 8, temperature sensor 9 and water supply tank.

[0016] The heat on the surface of the rotary kiln is transferred to the heat collecting pipeline 3 by overheating radiation, and the heat collecting pipeline 3 further transfers the heat to the water in the pipeline through heat conduction. The utility model recycles the heat of the kiln body, saving energy and conforming to the concept of green development.

[0017] Further, the rotary kiln body 2 and the supporting seat 4 are both installed on the base 1, and there is a gap between the supporting seat 4 and the kiln body 2. The supporting seat 4 is composed of a bottom arc plate and a heat collecting pipeline fixing platform, and the heat collecting pipeline 3 is fixedly connected to the fixing platform by bolts.

[0018] Further, the heat collecting pipeline 3 is placed above the supporting seat 4, and the heat collecting pipeline 3 is composed of an upper heat collecting pipeline 32 and a lower straight pipeline 33, which are connected together by welding. The lower straight pipeline 33 is connected to the water outlet 34, and the upper heat collecting pipeline 32 has a water inlet 31 on one side of the arc top. The water inlet 31 is connected to the water supply tank 8 above it. The heat collecting pipeline 3 is provided with an air guide pipe 5 above it, and each arc-shaped pipeline 32 is communicated with the air guide pipe 5.

[0019] Further, since the water enters a closed cavity, it can squeeze the air to form an air cavity. The air guide pipe 5 is provided above the heat collecting pipeline 3 to timely guide the excess gas in the pipeline out. When water is injected into the pipeline, it flows into the heat collecting pipeline 3 from the water inlet 31, first entering the lower straight pipeline 33. Since the water supply tank 8 is arranged above, as the water inflow continuously increases, under the action of atmospheric pressure, and the air guide pipe 5 can timely remove the excess gas inside the pipeline, therefore, the liquid level can gradually spread from the lower straight pipeline 33 to the upper heat collecting pipeline 32, until the water fills the entire heat collecting pipeline 3. When the water in the pipeline is discharged, since the heat collecting pipeline 3 is connected to the atmosphere through the air guide pipe, under the action of atmospheric pressure, and no negative pressure is formed inside the pipeline, the water after being heated can be smoothly discharged from the water outlet.

[0020] Further, the heat collecting pipe 3 is provided with two temperature sensors 9, the water inlet 31 and the water outlet 34 are provided with a water inlet electromagnetic valve 6 and a water outlet electromagnetic valve 7, the temperature sensors 9 can detect the water temperature in the heat collecting pipe 3, and the electromagnetic valves 6 and 7 can control the opening and closing of the water inlet 31 and the water outlet 34. When the temperature reaches the target temperature, the water outlet electromagnetic valve 7 is opened, and the water in the heat collecting pipe 3 is discharged. When filling water, the water inlet electromagnetic valve 6 is opened, and the water outlet electromagnetic valve 7 is closed, and the water filling work is completed.

[0021] The water inlet 31 is above the water outlet 34, and the air guide pipe 5 is arranged, which prevents the formation of air cavities in the heat collecting pipe 3, so that the water fills the entire pipe, and the heat collecting area of the heat collecting pipe 3 is fully utilized. At the same time, a water pump can not be used to pressurize the water supply and use the water pump to pressurize the water discharge, and the water filling and water discharge work is completely realized by the gravitational potential energy and the atmospheric pressure.

Claims

1. A radiant heat recovery device for a light-burned magnesia rotary kiln, characterized in that: The invention comprises a base (1), a rotary kiln body (2), a heat collecting pipeline (3), a support base (4), an air guide pipe (5), electromagnetic valves (6, 7), a water supply box (8) and a temperature sensor (9); the rotary kiln body (2) and the support base (4) are both mounted on the base (1); the heat collecting pipeline (3) is placed above the support base (4); an air guide pipe (5) and two temperature sensors (9) are provided on the upper portion of the heat collecting pipeline; a water inlet (31) is provided at one end of the upper portion of the heat collecting pipeline, and a water supply box (8) is provided above the water inlet (31); a water outlet (34) is provided at the lower portion of the other end; the water inlet (31) and the water outlet (34) are provided with a water inlet electromagnetic valve (6) and a water outlet electromagnetic valve (7).

2. The radiant heat recovery device for a light-burned magnesia rotary kiln according to claim 1, characterized in that: The heat collecting pipe (3) consists of an upper heat collecting pipe (32) and a lower straight pipe (33), and the two parts are connected together by welding; the lower straight pipe (33) is connected to the water outlet (34), and a water inlet (31) is provided at the top of one side arc of the upper heat collecting pipe (32), and the water supply tank (8) is connected above the water inlet (31).

3. The radiant heat recovery device for a light-burned magnesia rotary kiln according to claim 1, characterized in that: Each arc-shaped upper heat collecting pipe (32) is connected to the air guide pipe (5).

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