Heat energy recovery device for roller kiln

Abstract

The utility model relates to a heat energy recovery device for a roller kiln. According to the heat energy recovery device for the roller kiln, the sintering bin and the preheating bin are arranged, and the waste gas treatment pipe keeps communicating with the preheating bin, so that the heat energy recovery effect on waste gas can be effectively achieved in the using process, and the good preheating effect on raw materials needing to be sintered is achieved; the energy-saving effect in the using process is guaranteed, and waste of resources is avoided; and by arranging a filter screen and a dust falling assembly, the waste gas treatment effect can be effectively achieved in the using process of the waste gas treatment device, and the situation that waste gas is directly discharged, and consequently the environment is polluted is avoided. By arranging the sealing assembly, the sealing performance in the material taking process can be effectively guaranteed in the using process of the sintering bin, and heat loss of the sintering bin is avoided; and by arranging the dust falling assembly, the waste gas treatment effect can be further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of roller kiln, concretely to a heat energy recovery device for roller kiln. BACKGROUND

[0002] The roller kiln is mainly composed of a furnace body, a transmission system, a combustion system, a fan system and the like. Among them, the furnace body includes kiln walls, kiln roofs and the like, and these parts usually adopt lightweight refractory materials and flat suspended ceiling structures to reduce heat loss and improve the heat preservation performance of the kiln.

[0003] The roller kiln in the prior art produces a large amount of waste gas containing a large amount of heat energy during the firing process. If the heat energy of these waste gases is not recovered, the heat energy will be wasted, resulting in low energy utilization efficiency and energy waste, which not only increases the production cost, but also may lead to energy supply shortage and affect the sustainable development of enterprises. Therefore, a heat energy recovery device for roller kiln is proposed to solve the above problems. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a heat energy recovery device for roller kiln, which has the advantages of secondary heat energy recovery of the discharged waste gas, and solves the problem of resource waste caused by direct discharge of waste gas in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a heat energy recovery device for roller kiln, comprising a kiln body, a partition is arranged in the kiln body, the inside of the kiln body is divided into a sintering bin and a preheating bin by the partition, a plurality of transmission rollers are arranged on the inner bottom of the kiln body, and a sealing door is arranged on one side of the kiln body.

[0006] The other side of the kiln body is fixedly connected with a connecting hopper, the end of the connecting hopper is fixedly connected with a waste gas treatment pipe, the top of the waste gas treatment pipe is communicated with a heat circulation pipe, the other end of the heat circulation pipe is in communication with the preheating bin, and a circulating fan is further arranged in the waste gas treatment pipe.

[0007] A waste gas treatment assembly is arranged on the waste gas treatment pipe, the waste gas treatment assembly comprises a storage box and a filter screen, the number of filter screens is two, one side of each of the two filter screens opposite to each other is fixedly connected with a connecting pipe, one side of each of the two connecting pipes opposite to each other is fixedly connected with a dust falling assembly, the bottom of the dust falling assembly is in communication with the storage box, and the storage box is fixedly connected to the bottom of the waste gas treatment pipe.

[0008] Further, the dust falling assembly comprises a mounting cylinder, a cylinder is fixedly connected to the top of the mounting cylinder, an exhaust pipe is arranged in the cylinder, one end of the exhaust pipe penetrates the mounting cylinder and is in communication with one of the connecting pipes, and an air inlet pipe is connected to the other end of the mounting cylinder and is in communication with the other connecting pipe.

[0009] Further, the bottom of the mounting cylinder is fixedly connected with a conical pipe, and the bottom of the conical pipe is fixedly connected with a discharge pipe.

[0010] Further, the partition plate is provided with a feeding opening, and a sealing assembly is slidably connected in the feeding opening.

[0011] Further, the sealing assembly comprises two sealing plates, the two sealing plates are matched with the feeding opening, and a feeding plate for placing raw materials is fixedly connected between the two sealing plates.

[0012] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0013] I. The heat energy recovery device for the roller kiln, by providing the sintering bin and the preheating bin and connecting the waste gas treatment pipe with the preheating bin, the heat energy recovery effect of the waste gas can be effectively realized during use, the preheating effect of the raw materials required for sintering is good, the energy saving effect during use is guaranteed, and the waste of resources is avoided; by providing the filter screen and the dust falling assembly, the waste gas treatment effect can be effectively realized during use, and the direct discharge of waste gas is avoided to pollute the environment.

[0014] II. The heat energy recovery device for the roller kiln, by providing the sealing assembly, the sealing property during the material taking process can be effectively guaranteed during use, and the heat loss of the sintering bin is avoided; by providing the dust falling assembly, the waste gas treatment effect can be further improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the present application;

[0016] Figure 2 It is a structural schematic view of the kiln body;

[0017] Figure 3 It is a structural schematic view of the waste gas treatment pipe;

[0018] Figure 4 It is a structural schematic view of the waste gas treatment assembly;

[0019] Figure 5 It is a structural schematic view of the dust falling assembly.

[0020] In the figure: 1, kiln body; 11, sealing door; 12, partition; 13, sintering bin; 14, preheating bin; 15, transmission roller; 16, connecting hopper; 17, waste gas treatment pipe; 18, heat circulation pipe; 19, circulation fan; 2, sealing assembly; 21, sealing plate; 22, feeding plate; 3, waste gas treatment assembly; 31, storage box; 32, filter screen; 33, connecting pipe; 4, dust falling assembly; 41, mounting cylinder; 42, cylinder; 43, exhaust pipe; 44, air inlet pipe; 45, conical pipe; 46, discharging pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Embodiment one:

[0023] Please refer to Figures 1-5 The heat energy recovery device for the roller kiln in the embodiment comprises a kiln body (1), a partition (12) is arranged in the kiln body (1), the inside of the kiln body (1) is divided into a sintering bin (13) and a preheating bin (14) by the partition (12), a plurality of transmission rollers (15) are arranged on the inner bottom of the kiln body (1), and a sealing door (11) is arranged on one side face of the kiln body (1). One side face of the kiln body (1) is fixedly connected with a connecting hopper (16), one end of the connecting hopper (16) is fixedly connected with a waste gas treatment pipe (17), the top of the waste gas treatment pipe (17) is communicated with a heat circulation pipe (18), the other end of the heat circulation pipe (18) is in communication with the preheating bin (14), and a circulation fan (19) is further arranged in the waste gas treatment pipe (17). A waste gas treatment assembly (3) is arranged on the waste gas treatment pipe (17), the waste gas treatment assembly (3) comprises a storage box (31) and a filter screen (32), the number of the filter screens (32) is two, opposite side faces of the two filter screens (32) are fixedly connected with connecting pipes (33), opposite sides of the two connecting pipes (33) are fixedly connected with dust falling assemblies (4), the bottom of the dust falling assembly (4) is in communication with the storage box (31), and the storage box (31) is fixedly connected to the bottom of the waste gas treatment pipe (17).

[0024] As one preferred technical scheme in the embodiment, in actual use, the staff can first place the raw material to be sintered on the sealing assembly (2), and then control the transmission roller (15) to transport the sealing assembly (2) into the sintering bin (13) to realize the sintering effect of the raw material; in the sintering process, the waste gas generated in the sintering bin (13) due to sintering will enter the waste gas treatment pipe (17) through the connecting hopper (16) under the action of the circulating fan (19), and when the waste gas passes through the filter screen (32), the filtering effect can be effectively realized; at this time, the filtered waste gas will enter the dust falling assembly (4) for secondary filtering process, so as to effectively reduce the particulate matter content in the waste gas; the waste gas after secondary filtering by the dust falling assembly (4) will pass through another filter screen (32) to realize the effect of three times filtering, and finally enter the preheating bin (14) through the waste gas treatment pipe (17) to realize the effect of preheating the raw material.

[0025] Further, in the embodiment, the staff can set the filtering precision of one filter screen (32) near the waste gas treatment pipe (17) to be smaller than that of the other filter screen (32), so as to effectively realize the effect of multiple filtering of the waste gas.

[0026] The technical effects brought by the above embodiment are: by setting the sintering bin (13) and the preheating bin (14) and keeping the waste gas treatment pipe (17) in communication with the preheating bin (14), the effect of heat energy recovery of the waste gas can be effectively realized in use, the raw material to be sintered is well preheated, the energy saving effect in use is ensured, and the waste of resources is avoided; by setting the filter screen (32) and the dust falling assembly (4), the effect of treating the waste gas can be effectively realized in use, and the direct discharge of the waste gas is avoided to pollute the environment.

[0027] Embodiment two:

[0028] Please refer to Figures 1-5, in order to realize the good treatment effect to the dust particles in the exhaust gas, the dust falling assembly (4) in the embodiment comprises a mounting cylinder (41), the top of the mounting cylinder (41) is fixedly connected with a cylinder (42), the cylinder (42) is provided with an exhaust pipe (43), one end of the exhaust pipe (43) penetrates the mounting cylinder (41) and is in communication with one of the connecting pipes (33), the other end of the mounting cylinder (41) is connected with an air inlet pipe (44), the air inlet pipe (44) is in communication with the other connecting pipe (33). The bottom of the mounting cylinder (41) is fixedly connected with a conical pipe (45), and the bottom of the conical pipe (45) is fixedly connected with a discharge pipe (46). The baffle (12) is provided with a feeding port (121), and the feeding port (121) is slidably connected with a sealing assembly (2). The sealing assembly (2) comprises two sealing plates (21), the two sealing plates (21) are matched with the feeding port (121), and the two sealing plates (21) are fixedly connected with a feeding plate (22) for placing raw materials.

[0029] As a preferred technical solution in the embodiment: in actual use, when the exhaust gas passes through a filter screen (32) for filtering and enters the mounting cylinder (41), the airflow direction can be effectively changed under the action of the cylinder (42), so that the airflow in the mounting cylinder (41) and the conical pipe (45) produces a rotating effect, so that the particles with large mass in the exhaust gas can fall into the storage box (31) through the discharge pipe (46) under the action of gravity to realize the effect of collection. The exhaust gas treated by gravity is introduced into another connecting pipe (33) through the cylinder (42) and the exhaust pipe (43), and then is filtered three times under the action of another filter screen (32);

[0030] As a preferred technical solution in the embodiment: after the raw materials are sintered, the worker can first control the transmission roller (15) to drive the feeding plate (22) to produce displacement effect, when the feeding plate (22) is displaced into the preheating bin (14), the sealing plate (21) provided on the feeding plate (22) can realize the closing effect between the feeding port (121), so as to avoid the heat loss of the sintering bin (13) when the sealing door (11) is opened during the material taking process.

[0031] The technical effects brought by the above embodiment are: by setting the sealing assembly (2), the sealing property during material taking can be effectively guaranteed, and the heat loss of the sintering bin (13) is avoided; by setting the dust falling assembly (4), the treatment effect of the exhaust gas can be further improved.

[0032] The working principle of the above embodiment is:

[0033] I. In the actual use process, the workers can first realize the sintering effect of the raw materials by placing the raw materials needed for sintering on the sealing assembly (2), and then controlling the transmission roller (15) to transport the sealing assembly (2) into the sintering bin (13). In the sintering process, the waste gas generated in the sintering bin (13) will enter the waste gas treatment pipe (17) through the connecting hopper (16) under the action of the circulating fan (19), and when the waste gas passes through the filter screen (32), it can effectively realize the filtering effect. At this time, the filtered waste gas will enter the dust falling assembly (4) for secondary filtering process, so as to effectively reduce the particulate matter content in the waste gas. The waste gas filtered by the dust falling assembly (4) will pass through another filter screen (32) to realize the effect of three times filtering, and finally enter the preheating bin (14) through the waste gas treatment pipe (17) to realize the effect of preheating the raw materials.

[0034] II. In the actual use process, when the waste gas is filtered by a filter screen (32) and enters the installation cylinder (41), the airflow direction can be effectively changed under the action of the cylinder (42), so that the airflow produces a rotating effect in the installation cylinder (41) and the conical pipe (45), so that the particles with larger mass in the waste gas can fall into the storage box (31) through the discharge pipe (46) under the action of gravity to realize the effect of collection. The waste gas filtered by gravity will enter another connecting pipe (33) through the cylinder (42) and the exhaust pipe (43), and then realize the effect of three times filtering under the action of another filter screen (32).

[0035] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A thermal energy recovery device for a roller kiln, comprising a kiln body (1), characterized in that: The kiln body (1) is provided with a partition (12), the inside of the kiln body (1) is divided into sintering bin (13) and preheating bin (14) by the partition (12), the inner bottom of the kiln body (1) is provided with a plurality of transmission rollers (15), one side of the kiln body (1) is provided with a sealing door (11); The other side of the kiln body (1) is fixedly connected with a connecting hopper (16), the end of the connecting hopper (16) is fixedly connected with a waste gas treatment pipe (17), the top of the waste gas treatment pipe (17) is communicated with a heat circulation pipe (18), the other end of the heat circulation pipe (18) is communicated with the preheating bin (14), the waste gas treatment pipe (17) is further provided with a circulating fan (19); The waste gas treatment pipe (17) is provided with a waste gas treatment assembly (3), the waste gas treatment assembly (3) comprises a storage box (31) and a filter screen (32), the number of the filter screen (32) is two, the opposite sides of the two filter screens (32) are fixedly connected with connecting pipes (33), the opposite sides of the two connecting pipes (33) are fixedly connected with dust falling assemblies (4), the bottom of the dust falling assembly (4) is communicated with the storage box (31), and the storage box (31) is fixedly connected to the bottom of the waste gas treatment pipe (17).

2. A heat recovery device for a roller hearth kiln as defined in claim 1, characterized in that: The dust falling assembly (4) comprises an installation cylinder (41), the top of the installation cylinder (41) is fixedly connected with a cylinder (42), the cylinder (42) is provided with an exhaust pipe (43), one end of the exhaust pipe (43) penetrates the installation cylinder (41) and is communicated with one connecting pipe (33), the other end of the installation cylinder (41) is connected with an air inlet pipe (44), and the air inlet pipe (44) is communicated with the other connecting pipe (33).

3. A heat recovery device for a roller hearth kiln as defined in claim 2, characterized in that: The bottom of the installation cylinder (41) is fixedly connected with a conical pipe (45), and the bottom of the conical pipe (45) is fixedly connected with a discharge pipe (46).

4. A thermal energy recovery device for a roller hearth kiln as defined in claim 1, wherein: The partition (12) is provided with a feeding port (121), and the feeding port (121) is slidably connected with a sealing assembly (2).

5. A heat recovery device for a roller hearth kiln as defined in claim 4, characterized in that: The sealing assembly (2) comprises two sealing plates (21), the two sealing plates (21) are matched with the feeding port (121), and the two sealing plates (21) are fixedly connected with a feeding plate (22) for placing raw materials.

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