Rotary kiln waste heat utilization device

Abstract

The utility model provides a rotary kiln waste heat utilization device which comprises a rotary kiln body and a waste heat recovery assembly and further comprises a transmission assembly arranged between the waste heat recovery assembly and the rotary kiln body. The control assembly is linked through the transmission assembly to adjust the water inlet flow of the water inlet pipe; the rotary kiln body, the waste heat recovery assembly, the transmission assembly and the control assembly are arranged, the water flow in the waste heat recovery assembly is controlled through cooperation of the transmission assembly and the control assembly, and it is guaranteed that water flow in the waste heat recovery assembly is not too fast when the temperature of the rotary kiln body is not the highest; meanwhile, waste caused by the fact that heat energy cannot be completely absorbed due to the fact that water flow in the waste heat recovery assembly is too slow when the temperature of the rotary kiln body rapidly rises is avoided, through the arrangement, an operator does not need to manually adjust the water flow in the waste heat recovery assembly, and the automation degree of the device is effectively improved; and unnecessary waste in the energy recovery process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of energy utilization equipment, in particular to a rotary kiln waste heat utilization device. Background Art

[0002] The cement rotary kiln waste heat utilization device is an energy recovery system. It is mainly used in the cement production process to recover and utilize the heat of high-temperature exhaust gases emitted by the cement rotary kiln during the calcination of cement clinker. These exhaust gases usually contain a large amount of thermal energy. If not utilized, it will cause energy waste.

[0003] When utilizing the waste heat of a rotary kiln, the heat energy in the high-temperature gas discharged from the rotary kiln is converted into steam. The water pipes or heat exchange surfaces in the boiler are in direct contact with the high-temperature gas, absorbing heat to generate steam. However, when absorbing heat through the water pipes in the existing technology, the water flow in the water pipes cannot be adjusted in real time according to the waste heat temperature of the rotary kiln, and can only be manually controlled, which will result in a certain degree of heat waste.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not mean that the above content is the closest prior art. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned deficiencies and provide a rotary kiln waste heat utilization device.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a rotary kiln waste heat utilization device, comprising a rotary kiln body and a waste heat recovery assembly, wherein the waste heat recovery assembly is composed of multiple groups of connecting pipes and water inlet pipes and water outlet pipes arranged at both ends of the connecting pipes, and further comprises:

[0007] A transmission assembly is provided between the waste heat recovery assembly and the rotary kiln body;

[0008] The control component is arranged between the transmission component and the water inlet pipe, and regulates the water flow of the water inlet pipe through the transmission component linkage control component.

[0009] Furthermore, the outer wall of the rotary kiln body is provided with a heat-conducting layer, and the lower end of the rotary kiln body is fixedly provided with a support platform.

[0010] Furthermore, the transmission assembly includes a closed chamber fixedly arranged at one end of the connecting pipe, and a heat-conducting rod connected to the heat-conducting layer is fixedly arranged on the outer wall of the closed chamber.

[0011] Furthermore, a sliding sheet is slidably provided on one side of the closed chamber, and heat-absorbing gas that expands when heated is provided inside the closed chamber.

[0012] Furthermore, the control assembly includes a butterfly valve fixedly arranged at one end of the water inlet pipe and a control chamber arranged at the upper end of the butterfly valve, and one end of the control chamber is fixedly connected to the closed chamber.

[0013] Furthermore, an operating rod penetrating the control chamber is provided at the upper end of the butterfly valve, and a rotating gear is fixedly provided at one end of the operating rod.

[0014] Furthermore, a transmission bar is fixedly provided on one side of the sliding sheet, and one end of the transmission bar is engaged with the rotating gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By setting up a rotary kiln body, a waste heat recovery component, a transmission component and a control component, and utilizing the transmission component and the control component to cooperate in controlling the water flow in the waste heat recovery component, it is ensured that the water flow in the waste heat recovery component will not be too fast when the temperature of the rotary kiln body has not reached the highest. At the same time, it also avoids the situation where the water flow in the waste heat recovery component is too slow when the temperature of the rotary kiln body rises rapidly, resulting in the inability to fully absorb the heat energy and causing waste. Through such a setting, the operator does not need to manually adjust the water flow in the waste heat recovery component, which effectively improves the degree of automation of the device and avoids unnecessary waste in the energy recovery process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the control compartment in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the control chamber and the closed chamber in one embodiment of the present invention. Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the control chamber and the closed chamber in one embodiment of the present invention. Figure 2 .

[0022] In the figure: 1. Rotary kiln body; 101. Heat-conducting layer; 102. Support platform; 2. Waste heat recovery component; 201. Connecting pipe; 202. Water inlet pipe; 203. Water outlet pipe; 3. Transmission component; 301. Closed chamber; 302. Heat-conducting rod; 303. Heat-absorbing gas; 304. Sliding plate; 4. Control component; 401. Butterfly valve; 402. Control chamber; 403. Operating lever; 404. Rotating gear; 405. Transmission bar. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes in which A and B are satisfied at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] See also Figure 1-4 .

[0027] The utility model provides a technical solution for a rotary kiln waste heat utilization device: a rotary kiln waste heat utilization device, comprising a rotary kiln body 1 and a waste heat recovery component 2, the waste heat recovery component 2 being composed of a plurality of connecting pipes 201 and a water inlet pipe 202 and a water outlet pipe 203 arranged at both ends of the connecting pipe 201, and further comprising: a transmission component 3 arranged between the waste heat recovery component 2 and the rotary kiln body 1; a control component 4 arranged between the transmission component 3 and the water inlet pipe 202, and regulating the water inlet flow of the water inlet pipe 202 by linking the control component 4 through the transmission component 3.

[0028] By setting up the rotary kiln body 1, the waste heat recovery component 2, the transmission component 3 and the control component 4, the transmission component 3 and the control component 4 are used to cooperate to control the water flow in the waste heat recovery component 2, so as to ensure that the water flow in the waste heat recovery component 2 will not be too fast when the temperature of the rotary kiln body 1 has not reached the highest level. At the same time, it also avoids the situation where the water flow in the waste heat recovery component 2 is too slow when the temperature of the rotary kiln body 1 rises rapidly, resulting in the inability to fully absorb the heat energy and causing waste. Through such a setting, the operator does not need to manually adjust the water flow in the waste heat recovery component 2, which effectively improves the degree of automation of the device and avoids unnecessary waste in the energy recovery process.

[0029] In one embodiment, a heat-conducting layer 101 is provided on the outer wall of the rotary kiln body 1 , and a support platform 102 is fixedly provided on the lower end of the rotary kiln body 1 .

[0030] In this design, the heat-conducting layer 101 is provided to evenly dissipate the heat emitted from the outer wall of the rotary kiln body 1 to the connecting pipe 201 provided on the outside of the rotary kiln body 1, so that the water flow in the connecting pipe 201 can fully absorb the heat of the rotary kiln body 1. The support platform 102 is provided to support the rotary kiln body 1. The materials of the heat-conducting layer 101 and the support platform 102 of the rotary kiln body 1 are both existing technologies and will not be elaborated on here.

[0031] In one embodiment, the transmission component 3 includes a closed chamber 301 fixedly arranged at one end of the connecting pipe 201, a heat-conducting rod 302 connected to the heat-conducting layer 101 is fixedly arranged on the outer wall of the closed chamber 301, a sliding piece 304 is slidably arranged on one side of the closed chamber 301, and a heat-absorbing gas 303 that expands when heated is arranged inside the closed chamber 301. The heat-conducting rod 302 is made of a copper metal rod, which can quickly transfer the heat of the rotary kiln body 1 to the inside of the closed chamber 301. The control component 4 includes a butterfly valve 401 fixedly arranged at one end of the water inlet pipe 202 and a butterfly valve 401 arranged on the butterfly valve 401. The control chamber 402 at the upper end, one end of the control chamber 402 is fixedly connected to the closed chamber 301, there are many types of heat-absorbing gases 303, which are not specifically limited here. The upper end of the butterfly valve 401 is provided with an operating rod 403 that passes through the control chamber 402, and one end of the operating rod 403 is fixedly provided with a rotating gear 404, and one side of the sliding sheet 304 is fixedly provided with a transmission bar 405, one end of the transmission bar 405 is engaged with the rotating gear 404, and the butterfly valve 401 can control the water flow rate in the water inlet pipe 202, and can be quickly controlled by rotating the control end. This is the existing technology and will not be elaborated on here.

[0032] With this design, when the temperature inside the rotary kiln body 1 begins to rise, the heat conducting rod 302 will immediately transfer the heat to the inside of the closed chamber 301. When the temperature inside the closed chamber 301 rises, the heat absorbing gas 303 therein will expand due to the heat. The expanded heat absorbing gas 303 will push the sliding piece 304 to move toward one end. The movement of the sliding piece 304 will drive the transmission bar 405 to move, thereby driving the rotating gear 404 to rotate, and then driving the control end of the butterfly valve 401 below it to rotate, thereby increasing the water flow rate of the water inlet pipe 202 and accelerating the water flow rate in the connecting pipe 201, thereby recovering more heat energy from the rotary kiln body 1.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A rotary kiln waste heat utilization device, comprising a rotary kiln body (1) and a waste heat recovery assembly (2), wherein the waste heat recovery assembly (2) is composed of a plurality of connecting pipes (201) and a water inlet pipe (202) and a water outlet pipe (203) arranged at both ends of the connecting pipe (201), characterized in that: Also included are: A transmission assembly (3) is arranged between the waste heat recovery assembly (2) and the rotary kiln body (1); The control component (4) is arranged between the transmission component (3) and the water inlet pipe (202), and regulates the water inlet flow of the water inlet pipe (202) through the transmission component (3) and the control component (4).

2. A rotary kiln waste heat utilization device according to claim 1, characterized in that: The outer wall of the rotary kiln body (1) is provided with a heat-conducting layer (101), and the lower end of the rotary kiln body (1) is fixedly provided with a support platform (102).

3. The rotary kiln waste heat utilization device according to claim 2, characterized in that: The transmission assembly (3) comprises a closed chamber (301) fixedly arranged at one end of the connecting pipe (201), and a heat conducting rod (302) connected to the heat conducting layer (101) is fixedly arranged on the outer wall of the closed chamber (301).

4. A rotary kiln waste heat utilization device according to claim 3, characterized in that: A sliding sheet (304) is slidably provided on one side of the closed chamber (301), and heat-absorbing gas (303) that expands when heated is provided inside the closed chamber (301).

5. The rotary kiln waste heat utilization device according to claim 4, characterized in that: The control assembly (4) comprises a butterfly valve (401) fixedly arranged at one end of the water inlet pipe (202) and a control chamber (402) arranged at the upper end of the butterfly valve (401), and one end of the control chamber (402) is fixedly connected to the closed chamber (301).

6. The rotary kiln waste heat utilization device according to claim 5, characterized in that: An operating rod (403) passing through the control chamber (402) is provided at the upper end of the butterfly valve (401), and a rotating gear (404) is fixedly provided at one end of the operating rod (403).

7. The rotary kiln waste heat utilization device according to claim 6, characterized in that: A transmission bar (405) is fixedly provided on one side of the sliding sheet (304), and one end of the transmission bar (405) is engaged with the rotating gear (404).

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