Constant-calorific-value double-hearth lime kiln

Abstract

The utility model relates to the technical field of double-chamber lime kilns, in particular to a constant-calorific-value double-chamber lime kiln. According to the technical scheme, the double-hearth lime kiln comprises a bearing base, a double-hearth lime kiln body, a feeding pipe and a heat exchange coil pipe, wherein a pump body and a gas filtering box are mounted on the top end face of the bearing base; a double-chamber lime kiln body is mounted on the top end face of the bearing base through a mounting frame, and a communicating pipe is arranged on the double-chamber lime kiln body. A feeding pipe is arranged on the top end face of the double-chamber lime kiln body, and a discharging pipe is arranged on the bottom end face of the double-chamber lime kiln body. A hopper is fixedly embedded in the top end face of the feeding pipe. A combustion-supporting gas pipe is fixedly embedded into the side end surface of the double-chamber lime kiln body; a heat exchange coil pipe is mounted on the discharging pipe in an attached manner; a connecting pipe is embedded and fixed on the heat exchange coil pipe; an exhaust pipe and a first air inlet pipe are arranged on the pump body. The double-chamber lime kiln can be used, and direct heat exchange in the double-chamber lime kiln is avoided during combustion supporting.

Description

Technical Field

[0001] The utility model relates to the technical field of double-chamber lime kilns, in particular to a constant calorific value double-chamber lime kiln. Background Art

[0002] The double-chamber lime kiln is a lime kiln that adopts the parallel flow calcination technology. It has two kiln chambers connected by a channel, which can realize the alternating calcination of the two kiln chambers.

[0003] After searching, the patent announcement number CN216890676U discloses a double-chamber lime kiln energy-saving device. Its technical solution includes a kiln body, an insulation sleeve and a base. The kiln body is installed on the top of the base through a support frame. The outer surface of the kiln body is sleeved with an annular tube near the top. The inner surface of the annular tube is installed with a burner nozzle. The outer surface of the kiln body is sleeved with an insulation sleeve. A mixing tube is installed on the inner side of the annular tube. A three-way valve is installed at the end of the mixing tube. A four-way pipe is installed at the bottom of the three-way valve through a connecting pipe. A fuel pipe is installed at the bottom of the four-way pipe, and a heat exchange pipe is installed on one side of the four-way pipe. The utility model can reduce the heat dissipation of the kiln body, and at the same time, the temperature of the kiln body itself is used to heat the combustion air, and the temperature of the combustion air and fuel after co-flow is increased, thereby improving the combustion rate of the fuel, which is conducive to reducing fuel consumption and reducing harmful gas emissions.

[0004] The CN216890676U in the prior art increases the temperature of the combustion air and fuel after they flow together during use, thereby increasing the combustion rate of the fuel, which is beneficial to reducing fuel consumption and reducing harmful gas emissions. However, in actual combustion, directly exchanging heat with the kiln body to heat the gas will cause an uneven drop in the temperature of the kiln body, which can easily cause the kiln body temperature to fluctuate and cannot be processed by constant heat. Therefore, it needs to be completed. Utility Model Content

[0005] The utility model aims to provide a double-chamber lime kiln with a constant calorific value to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a constant calorific value double-chamber lime kiln, comprising a bearing base, a double-chamber lime kiln body, a feed pipe and a heat exchange coil,

[0007] The top surface of the bearing base is provided with a pump body and an air filter box, and the inner wall of the air filter box is fitted with a filter element;

[0008] The top surface of the bearing base is provided with a double-chamber lime kiln body via a mounting frame, and a connecting pipe is provided on the double-chamber lime kiln body;

[0009] The top end surface of the double-chamber lime kiln body is provided with a feed pipe, and the bottom end surface of the double-chamber lime kiln body is provided with a discharge pipe;

[0010] A hopper is embedded and fixed on the top surface of the feed pipe;

[0011] A combustion-supporting gas pipe is embedded and fixed on the side end surface of the double-chamber lime kiln body, and a valve is installed on the combustion-supporting gas pipe through a flange;

[0012] A heat exchange coil is fitted on the discharge pipe, and a heat insulation sleeve is installed on the heat exchange coil;

[0013] A connecting pipe is embedded and fixed on the heat exchange coil;

[0014] The pump body is provided with an exhaust pipe and an air inlet pipe.

[0015] Preferably, the feed pipe and the discharge pipe are connected to the double-chamber lime kiln body, and valves are installed on the feed pipe and the discharge pipe through flanges. The feed pipe and the discharge pipe are connected to the double-chamber lime kiln body, so that personnel can open the valves on the feed pipe and the discharge pipe to perform feeding and discharging operations in the double-chamber lime kiln body.

[0016] Preferably, the end of the connecting pipe away from the heat exchange coil is embedded and fixed in the combustion-supporting pipe, and a valve is installed on the connecting pipe through a flange. By embedding and fixing the end of the connecting pipe away from the heat exchange coil in the combustion-supporting pipe, the gas that enters the heat exchange coil for heat exchange and is heated can open the valve on the connecting pipe and be discharged into the combustion-supporting pipe.

[0017] Preferably, the end of the air inlet pipe 1 facing away from the pump body is embedded and fixed in the air filter box, and the air filter box is connected to the pump body gas through the air inlet pipe 1. The end of the air inlet pipe 1 facing away from the pump body is embedded and fixed in the air filter box, so that the gas in the air filter box can be extracted through the air inlet pipe 1 after the pump body is opened.

[0018] Preferably, the end of the exhaust pipe facing away from the pump body is embedded and fixed in the heat exchange coil, and the heat exchange coil is in gas communication with the pump body through the exhaust pipe. The end of the exhaust pipe facing away from the pump body is embedded and fixed in the heat exchange coil, so that the gas extracted by the pump body can be discharged into the heat exchange coil through the exhaust pipe.

[0019] Preferably, the top surface of the air filter box is embedded with an air intake pipe 2, and the air intake pipe 2 is connected to the air filter box through the air intake pipe 2. When the air in the air filter box is extracted, the air filter box is inhaled through the air intake pipe 2.

[0020] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0021] 1. The utility model provides a heat exchange coil. When the double-bore lime kiln body is used, in order to assist combustion in the double-bore lime kiln body, the personnel can open the pump body to take in air through the air inlet pipe. During the intake, the gas is discharged into the heat exchange coil through the exhaust pipe, so that the discharge pipe is heated by heat conduction when the double-bore lime kiln body is discharged and processed, so that the temperature generated by the discharge pipe can be exchanged with the gas flowing in the heat exchange coil, so that the gas after heat exchange can be discharged into the combustion-supporting pipe by opening the valve on the connecting pipe, and the gas can be discharged into the double-bore lime kiln body by opening the valve on the combustion-supporting pipe, so that the heated gas can assist combustion inside, avoiding direct heat exchange on the double-bore lime kiln body to affect the internal heat, and instead recovering the heat at the discharge position of the double-bore lime kiln body, thereby meeting the higher constant heat value of the double-bore lime kiln body and avoiding the internal temperature fluctuation affecting the processing.

[0022] 2. The utility model sets an air filter box. When personnel use the combustion-supporting function on the double-chamber lime kiln body, they can open the pump body to intake air through the air inlet pipe 1. When intake air, the gas in the air filter box is extracted. When extracting air, the air filter box takes in air through the air inlet pipe 2, so that the extracted gas can enter the air filter box and be filtered through the filter element, avoiding the gas containing dust in the processing environment from being directly extracted into the pipeline and causing the pipeline to be blocked, thereby meeting the gas circulation and heat exchange requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0024] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0025] Figure 3 This is a schematic cross-sectional view of the air filter box of the utility model;

[0026] Figure 4 It is a schematic diagram of the internal structure of the thermal insulation cover of the utility model.

[0027] In the figure: 1. bearing base; 2. exhaust pipe; 3. pump body; 4. air inlet pipe 1; 5. air filter box; 6. air inlet pipe 2; 7. discharge pipe; 8. mounting frame; 9. insulation sleeve; 10. connecting pipe; 11. double-chamber lime kiln body; 12. feed pipe; 13. hopper; 14. connecting pipe; 15. combustion-supporting gas pipe; 16. filter element; 17. heat exchange coil. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Embodiment 1

[0030] like Figure 1-Figure 4 As shown, the utility model provides a constant calorific value double-chamber lime kiln, comprising a bearing base 1, a double-chamber lime kiln body 11, a feed pipe 12 and a heat exchange coil 17.

[0031] The top surface of the supporting base 1 is provided with a pump body 3 and an air filter box 5, and the inner wall of the air filter box 5 is fitted with a filter element 16;

[0032] A double-chamber lime kiln body 11 is mounted on the top surface of the supporting base 1 through a mounting frame 8, and a connecting pipe 10 is arranged on the double-chamber lime kiln body 11;

[0033] A feed pipe 12 is provided on the top end surface of the double-chamber lime kiln body 11, and a discharge pipe 7 is provided on the bottom end surface of the double-chamber lime kiln body 11;

[0034] A hopper 13 is embedded and fixed on the top surface of the feed pipe 12;

[0035] A combustion-supporting gas pipe 15 is embedded and fixed on the side end surface of the double-chamber lime kiln body 11, and a valve is installed on the combustion-supporting gas pipe 15 through a flange.

[0036] The discharge pipe 7 is fitted with a heat exchange coil 17, and the heat exchange coil 17 is installed with an insulation sleeve 9, which can be made of heat-resistant and heat-insulating rock wool to prevent excessive temperature from affecting normal insulation operations;

[0037] A connecting pipe 14 is embedded and fixed on the heat exchange coil 17;

[0038] An exhaust pipe 2 and an air inlet pipe 4 are provided on the pump body 3.

[0039] One end of the connecting pipe 14 facing away from the heat exchange coil 17 is embedded and fixed in the combustion-supporting pipe 15, and a valve is installed on the connecting pipe 14 through a flange. The end of the connecting pipe 14 facing away from the heat exchange coil 17 is embedded and fixed in the combustion-supporting pipe 15, so that the gas that enters the heat exchange coil 17 for heat exchange and heating can open the valve on the connecting pipe 14 and be discharged into the combustion-supporting pipe 15.

[0040] One end of the air intake pipe 4 facing away from the pump body 3 is embedded and fixed in the air filter box 5, and the air filter box 5 is connected to the pump body 3 through the air intake pipe 4. The end of the air intake pipe 4 facing away from the pump body 3 is embedded and fixed in the air filter box 5, so that the gas in the air filter box 5 can be extracted through the air intake pipe 4 after the pump body 3 is opened.

[0041] One end of the exhaust pipe 2 facing away from the pump body 3 is embedded and fixed in the heat exchange coil 17, and the heat exchange coil 17 is connected to the pump body 3 through the exhaust pipe 2. The end of the exhaust pipe 2 facing away from the pump body 3 is embedded and fixed in the heat exchange coil 17, so that the gas extracted by the pump body 3 can be discharged into the heat exchange coil 17 through the exhaust pipe 2.

[0042] Based on Example 1: When personnel are using the double-chamber lime kiln body 11, in order to assist combustion in the double-chamber lime kiln body 11, personnel can open the pump body 3 to intake air through the air intake pipe 4. During the intake, the gas is discharged into the heat exchange coil 17 through the exhaust pipe 2, so that the double-chamber lime kiln body 11 can conduct heat to heat the discharge pipe 7 when the double-chamber lime kiln body 11 is discharged and processed, so that the temperature generated by the discharge pipe 7 can be heat exchanged through the gas flowing in the heat exchange coil 17, so that the gas after heat exchange can open the valve on the connecting pipe 14 to be discharged into the combustion-supporting pipe 15, and the valve on the combustion-supporting pipe 15 can be opened to discharge the gas into the double-chamber lime kiln body 11, so that the heated gas can assist combustion inside, avoiding direct heat exchange on the double-chamber lime kiln body 11 to affect the internal heat, and instead recovering the heat at the discharge position of the double-chamber lime kiln body 11, thereby meeting the higher constant heating value of the double-chamber lime kiln body 11.

[0043] Embodiment 2

[0044] like Figure 1-Figure 4 As shown, the constant calorific value double-chamber lime kiln proposed by the utility model, compared with the first embodiment, this embodiment also includes: a bearing base 1, a double-chamber lime kiln body 11, a feed pipe 12 and a heat exchange coil 17,

[0045] The top surface of the supporting base 1 is provided with a pump body 3 and an air filter box 5, and the inner wall of the air filter box 5 is fitted with a filter element 16;

[0046] A double-chamber lime kiln body 11 is mounted on the top surface of the supporting base 1 through a mounting frame 8, and a connecting pipe 10 is arranged on the double-chamber lime kiln body 11;

[0047] A feed pipe 12 is provided on the top end surface of the double-chamber lime kiln body 11, and a discharge pipe 7 is provided on the bottom end surface of the double-chamber lime kiln body 11;

[0048] A hopper 13 is embedded and fixed on the top surface of the feed pipe 12;

[0049] A combustion-supporting gas pipe 15 is embedded and fixed on the side end surface of the double-chamber lime kiln body 11, and a valve is installed on the combustion-supporting gas pipe 15 through a flange.

[0050] A heat exchange coil 17 is fitted on the discharge pipe 7, and a heat insulation sleeve 9 is installed on the heat exchange coil 17;

[0051] A connecting pipe 14 is embedded and fixed on the heat exchange coil 17;

[0052] An exhaust pipe 2 and an air inlet pipe 4 are provided on the pump body 3.

[0053] The feed pipe 12 and the discharge pipe 7 are connected to the double-chamber lime kiln body 11, and valves are installed on the feed pipe 12 and the discharge pipe 7 through flanges. The feed pipe 12 and the discharge pipe 7 are connected to the double-chamber lime kiln body 11, so that personnel can open the valves on the feed pipe 12 and the discharge pipe 7 to perform feeding and discharging operations in the double-chamber lime kiln body 11.

[0054] An air intake pipe 2 6 is embedded and fixed on the top surface of the air filter box 5, and the air intake pipe 2 6 is connected to the air filter box 5 through the air intake pipe 2 6. When the gas in the air filter box 5 is extracted, the air filter box 5 takes in air through the air intake pipe 2 6.

[0055] Based on Example 2: When personnel use the combustion aid on the double-chamber lime kiln body 11, they can open the pump body 3 to intake air through the air intake pipe 1 4, and extract the gas in the air filter box 5 during the intake. During the extraction, the air filter box 5 takes in air through the air intake pipe 2 6, so that the extracted gas can enter the air filter box 5 and be filtered through the filter element 16, thereby preventing the dust-containing gas in the processing environment from being directly extracted into the pipeline and causing blockage of the pipeline.

[0056] It is obvious 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 regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A constant calorific value double-chamber lime kiln, comprising a bearing base (1), a double-chamber lime kiln body (11), a feed pipe (12) and a heat exchange coil (17), characterized in that: The top surface of the bearing base (1) is mounted with a pump body (3) and an air filter box (5), and the inner wall of the air filter box (5) is fitted with a filter element (16); A double-chamber lime kiln body (11) is mounted on the top surface of the bearing base (1) via a mounting frame (8), and a connecting pipe (10) is provided on the double-chamber lime kiln body (11); The top end surface of the double-chamber lime kiln body (11) is provided with a feed pipe (12), and the bottom end surface of the double-chamber lime kiln body (11) is provided with a discharge pipe (7); A hopper (13) is embedded and fixed on the top end surface of the feed pipe (12); A combustion-supporting gas pipe (15) is embedded and fixed on the side end surface of the double-chamber lime kiln body (11), and a valve is installed on the combustion-supporting gas pipe (15) via a flange; A heat exchange coil (17) is fitted on the discharge pipe (7), and a heat insulation sleeve (9) is installed on the heat exchange coil (17); A connecting pipe (14) is embedded and fixed on the heat exchange coil (17); The pump body (3) is provided with an exhaust pipe (2) and an air inlet pipe (4).

2. A constant calorific value double-chamber lime kiln according to claim 1, characterized in that: The feed pipe (12) and the discharge pipe (7) are connected to the double-chamber lime kiln body (11), and valves are installed on the feed pipe (12) and the discharge pipe (7) via flanges.

3. A constant calorific value double-chamber lime kiln according to claim 1, characterized in that: One end of the connecting pipe (14) facing away from the heat exchange coil (17) is embedded and fixed in the combustion-supporting gas pipe (15), and a valve is installed on the connecting pipe (14) via a flange.

4. A constant calorific value double-chamber lime kiln according to claim 1, characterized in that: The end of the air inlet pipe (4) facing away from the pump body (3) is embedded and fixed in the air filter box (5), and the air filter box (5) is in gas communication with the pump body (3) through the air inlet pipe (4).

5. A constant calorific value double-chamber lime kiln according to claim 1, characterized in that: One end of the exhaust pipe (2) facing away from the pump body (3) is embedded and fixed in the heat exchange coil (17), and the heat exchange coil (17) is in gas communication with the pump body (3) through the exhaust pipe (2).

6. A constant calorific value double-chamber lime kiln according to claim 1, characterized in that: The top end surface of the air filter box (5) is embedded with an air intake pipe 2 (6) and the air intake pipe 2 (6) is in gas communication with the air filter box (5).

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