Energy-saving kiln

Abstract

The utility model relates to the technical field of kilns, and in particular to an energy-saving kiln. The utility model includes a combustion box and a kiln body fixedly arranged above the combustion box and connected to the combustion box; the inner wall of the kiln body is provided with an insulation cavity along the circumference of the furnace body, and a heating pipe is arranged around the inner wall of the insulation cavity; the top of the kiln body is provided with an installation cavity through a sealing partition, and a fan is arranged in the installation cavity, the fan air inlet is connected to the internal space of the combustion box through the sealing partition, and the fan air outlet is connected to the insulation cavity through a conduit; the bottom of the outer wall of the kiln body is also provided with an air outlet connected to the insulation cavity; the outer wall of the kiln body is provided with a circulating water pump. The purpose of the utility model is to provide an energy-saving kiln, which solves the problem that when the kiln is used in cold areas, the kiln cools down quickly, the preheating time is long, and the kiln temperature is low, resulting in high energy consumption for heating and heating the kiln.

Description

Technical Field

[0001] The utility model relates to the technical field of kilns, in particular to an energy-saving kiln. Background Art

[0002] A kiln is a furnace used to fire ceramic objects and sculptures or to fuse enamel to the surface of metal objects. It is usually a device made of refractory materials for firing products and is an essential facility in pottery molding. In cold northern regions, after the kiln is fired, it cools down quickly, so it is necessary to preheat the kiln in advance when restarting it. In addition, the energy consumption of kiln cooling and heating increases, and the heating time is increased.

[0003] Therefore, how to design an energy-saving kiln that can slow down the temperature drop of the kiln, reduce the kiln preheating time, and reduce the energy consumption of the kiln restart in a short period of time is a technical problem that needs to be solved. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide an energy-saving kiln, which solves the problem that when the kiln is used in cold areas, the kiln cools down quickly, the preheating time is long, and the kiln temperature is low, resulting in high energy consumption for heating the kiln.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it comprises a combustion box and a kiln furnace body fixedly arranged above the combustion box and connected with the combustion box; an insulation cavity is provided on the inner wall of the kiln furnace body along the circumference of the furnace body, and a heating pipe is provided around the inner wall of the insulation cavity; an installation cavity is provided on the top of the kiln furnace body through a sealing partition, and a fan is provided in the installation cavity, the air inlet of the fan passes through the sealing partition and is connected with the internal space of the combustion box, and the air outlet of the fan is connected with the insulation cavity through a conduit; an air outlet connected with the insulation cavity is also provided at the bottom of the outer side wall of the kiln furnace body; a circulating water pump is provided on the outer side wall of the kiln furnace body, and the output end and the input end of the circulating water pump are respectively connected with a water outlet pipe and a water inlet pipe, the bottom of the heating pipe is connected with the circulating water pump through the water inlet pipe, and the top of the heating pipe is connected with the circulating water pump through the water outlet pipe.

[0006] Furthermore, a plurality of air inlet holes are provided in the combustion box.

[0007] Furthermore, the heat-insulating cavity is filled with heat-insulating material, and an air flow channel connected to the air outlet is reserved in the heat-insulating cavity.

[0008] Furthermore, the heating tube is spiral-shaped.

[0009] The utility model has the following beneficial effects:

[0010] 1- The utility model has a heat preservation cavity opened on the inner wall of the kiln body, a heating pipe is arranged around the kiln body in the heat preservation cavity, and the kiln body combustion chamber is provided. The fan draws the exhaust gas into the heat preservation cavity to heat the water flow in the heating pipe. After the combustion of the kiln body is finished, the heat preservation material in the heat preservation cavity slows down the cooling speed of the water flow in the heating pipe, so that the insulation layer maintains the temperature for a certain period of time. After the kiln body cools down, it maintains a certain temperature and cools down at a slow speed, so as to reduce the preheating time before the kiln body is used again. Since the temperature of the kiln body is higher than the temperature of the cooling kiln body, the energy consumption of multiple combustions in a short period of time is reduced, thereby saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional schematic diagram of the utility model.

[0012] Description of reference numerals:

[0013] 1-combustion box, 11-circulating water pump, 111-water outlet pipe, 112-water inlet pipe, 12-air inlet hole;

[0014] 2-kiln furnace body, 21-insulation cavity, 211-heating tube, 212-insulation material, 213-air flow channel, 22-installation cavity, 221-fan, 23-air outlet. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0016] See also Figure 1 As shown, it includes a combustion box 1 and a kiln furnace body 2 fixedly arranged above the combustion box 1 and connected to the combustion box 1; the inner side wall of the kiln furnace body 2 is provided with a heat preservation cavity 21 along the circumference of the furnace body, and a heating pipe 211 is arranged around the inner wall of the heat preservation cavity 21; the top of the kiln furnace body 2 is provided with an installation cavity 22 through a sealing partition, and a fan 221 is arranged in the installation cavity 22, and the air inlet of the fan 221 passes through the sealing partition and is connected to the internal space of the combustion box 1, and the air outlet of the fan 221 is connected to the heat preservation cavity 21 through a conduit; the bottom of the outer side wall of the kiln furnace body 2 is also provided with an air outlet 23 connected to the heat preservation cavity 21;

[0017] A circulating water pump 11 is provided on the outer wall of the kiln furnace body 2. The output end and the input end of the circulating water pump 11 are respectively connected to a water outlet pipe 111 and a water inlet pipe 112. The bottom of the heating tube 211 is connected to the circulating water pump 11 through the water inlet pipe 112, and the top of the heating tube 211 is connected to the circulating water pump 11 through the water outlet pipe 111.

[0018] In order to provide oxygen to the combustion box 1 , a plurality of air inlet holes 12 are provided in the combustion box 1 in this embodiment.

[0019] The heat preservation cavity 21 is filled with heat preservation material 212 , and an air flow channel 213 connected to the air outlet 23 is reserved in the heat preservation cavity 21 .

[0020] The heating tube 211 is spiral-shaped, which increases the contact time between the water flow and the inner wall of the kiln furnace body 2 when the water flow in the heating tube 211 flows, thereby increasing the heat preservation effect of the kiln furnace body 2.

[0021] The working principle is roughly as follows:

[0022] When in use, workers fill the fuel into the combustion chamber to heat the inside of the kiln body 2. At the same time, the fan 221 and the circulating water pump 11 start working. Water flows through the circulating water pump 11 and the outlet pipe 111 and enters the heating tube 211 from the top of the heating tube 211. The fan 221 sucks in the exhaust gas during and after combustion in the combustion chamber, and sends the exhaust gas into the heat preservation chamber 21 through the conduit. The heat energy contained in the exhaust heats the water flow in the heating tube 211 in the heat preservation chamber 21, and finally the exhaust is discharged from the kiln body 2 through the air outlet 23.

[0023] After the combustion is completed, all the hot gas from the kiln body 2 is discharged, and the temperature of the kiln body 2 gradually decreases, while the circulating water pump 11 continues to work. The heated water circulates along the heating tube 211, the water inlet pipe 112, and the water outlet pipe 111. Under the action of the insulation material 212 in the insulation chamber 21 (the above-mentioned insulation material 212 can be a phase change material with certain heat absorption and heat storage, and the optimal phase change dimension of the phase change material is 30-50°C, and the insulation material 212 has the best energy storage effect in this range), the water flow in the heating tube 211 is cooled down slowly, and the kiln body 2 is kept warm for a certain period of time through the insulation layer, thereby reducing the preheating time of the kiln body 2, and facilitating the use of the kiln body 2 multiple times in a short period of time to reduce the energy consumption of the kiln body 2 and save energy.

[0024] The above description is only a specific implementation method of the utility model, and does not limit the patent scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. An energy-saving kiln, characterized in that: The invention comprises a combustion box (1) and a kiln furnace body (2) fixedly arranged above the combustion box (1) and connected to the combustion box (1); a heat preservation cavity (21) is provided on the inner side wall of the kiln furnace body (2) along the circumference of the furnace body, and a heating pipe (211) is provided in the heat preservation cavity (21) along the inner wall of the heat preservation cavity (21); a mounting cavity (22) is provided on the top of the kiln furnace body (2) through a sealing partition, and a fan (221) is provided in the mounting cavity (22); an air inlet of the fan (221) passes through the sealing partition and is connected to the internal space of the combustion box (1), and an air outlet of the fan (221) is connected to the heat preservation cavity (21) through a conduit; an air outlet (23) connected to the heat preservation cavity (21) is also provided on the bottom of the outer side wall of the kiln furnace body (2); A circulating water pump (11) is provided on the outer wall of the kiln furnace body (2); the output end and the input end of the circulating water pump (11) are respectively connected to a water outlet pipe (111) and a water inlet pipe (112); the bottom of the heating pipe (211) is connected to the circulating water pump (11) through the water inlet pipe (112); and the top of the heating pipe (211) is connected to the circulating water pump (11) through the water outlet pipe (111).

2. The energy-saving kiln according to claim 1, characterized in that: A plurality of air inlet holes (12) are provided in the combustion box (1).

3. The energy-saving kiln according to claim 1, characterized in that: The heat-insulating cavity (21) is filled with heat-insulating material (212), and an airflow channel (213) connected to the air outlet (23) is also reserved in the heat-insulating cavity (21).

4. The energy-saving kiln according to claim 1, characterized in that: The heating tube (211) is spiral-shaped.

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