Energy-saving waste heat hot air drying device for pushed slab kiln

Abstract

The pushed slab kiln energy-saving waste heat hot air drying device comprises a pushed slab kiln body, a dust removal mechanism, a purification device and a drying box, a waste gas opening is formed in one end of the pushed slab kiln body and connected with a waste gas pipe, the waste gas pipe is connected with the dust removal mechanism, and an exhaust pipe is arranged on the side, away from the waste gas pipe, of the dust removal mechanism. The exhaust pipe is connected with a first heat exchanger, the purification device comprises a purification box and a catalytic bed, the purification box is sequentially provided with a first air inlet, the catalytic bed and a first air outlet from left to right, the outlet end of the first heat exchanger is communicated with the purification box through a pipeline, the first air outlet is connected with an air supply pipe, and the air outlet end of the air supply pipe is connected with a second heat exchanger. The air outlet end of the second heat exchanger is connected with an exhaust fan through a pipeline, the output end of the exhaust fan is connected with a connecting pipe, and the connecting pipe is communicated with the drying box. Through the design, waste heat waste gas in the pushed slab kiln can be recycled to dry materials, resources are saved, energy consumption is reduced, and energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery and utilization, in particular to a push plate kiln energy-saving waste heat hot air drying device. Background Art

[0002] The characteristics of the push-plate kiln are the use of a vertical kiln, which is not high, the chimney is short, the flue is relatively straight, and the heat distribution is relatively uniform. The plate combustion technology is used in the firing process. Charcoal is used as fuel to make charcoal blocks, which are spread in the furnace and ignited with small firewood. This firing method makes the charcoal blocks difficult to burn, the firing time is long, the kiln temperature is relatively uniform, and the firing effect is stable and excellent. The push-plate kiln is used for the sintering of electronic ceramics, structural ceramics, high-aluminum ceramics, chemical materials, electronic components and other products.

[0003] In the prior art, when the push-plate kiln is in use, a large amount of waste heat and waste gas is generated therein, and most of the waste heat is not rationally utilized, but is discharged through the exhaust pipe or naturally dissipated, resulting in a waste of resources.

[0004] The utility model aims to provide a push plate kiln energy-saving waste heat hot air drying device to solve the problems mentioned in the above background technology. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides a push-plate kiln energy-saving waste heat hot air drying device, comprising a push-plate kiln body, a dust removal mechanism, a purification device, and a drying box, one end of the push-plate kiln body is provided with an exhaust port, the exhaust port is connected to an exhaust pipe, the exhaust pipe is connected to the dust removal mechanism, the dust removal mechanism is provided with an exhaust pipe on a side away from the exhaust pipe, the exhaust pipe is connected to a heat exchanger 1, the purification device comprises a purification box, a catalytic bed, the purification box is provided with an air inlet 1, a catalytic bed, and an air outlet 1 from left to right, the outlet end of the heat exchanger 1 is connected to the purification box through a pipeline, the air outlet 1 is connected to an air supply pipe, the air outlet end of the air supply pipe is connected to a heat exchanger 2, the air outlet end of the heat exchanger 2 is connected to an exhaust fan through a pipeline, the output end of the exhaust fan is connected to a connecting pipe, and the connecting pipe is connected to the drying box;

[0006] The drying box includes a box body and an air inlet. A drying chamber and a heat preservation chamber are arranged inside the box body. The air inlet is connected to the connecting pipe. The connecting pipe is inserted into the box body and extends to the top inner wall of the drying chamber. A multi-layer detachable storage rack is arranged inside the drying chamber. An exhaust port is also arranged on one side of the box body.

[0007] As a further improvement of the utility model, the dust removal mechanism includes a dust removal box, a filter element, and a dust collecting bin. The top of the dust removal box is provided with two air inlets, the two air inlets are connected to the exhaust pipe, the exhaust pipe is provided with a solenoid valve, a plurality of filter elements are provided in the dust removal box, a baffle is provided in the dust removal box, the baffle is located between the filter element and the exhaust pipe, the dust collecting bin is arranged at the bottom end of the dust removal box, two air outlets are provided on one side of the box body, the filter element is connected to a dust cleaning mechanism, and the dust cleaning mechanism is installed on one side of the box body.

[0008] As a further improvement of the utility model, the dust cleaning mechanism includes a high-pressure air pump, a pulse valve, and a jet pipe. A clean air chamber is provided on the side of the box body close to the second air outlet. The high-pressure air pump is arranged on the outer wall of the clean air chamber. The jet port of the high-pressure air pump is connected to the jet pipe. The pulse valve is provided at one end of the jet pipe close to the high-pressure air pump. The jet pipe is connected to one end of the pulse valve. An exhaust port 2 is provided at the bottom of the clean air chamber. The exhaust port 2 is connected to the exhaust pipe. The exhaust pipe is provided with an electromagnetic valve 2.

[0009] As a further improvement of the utility model, the exhaust port 1 is provided with a circulation fan, the circulation fan is communicated with the heat preservation chamber, the circulation fan is connected to a filter, and the filter is installed on the outer wall of the box body.

[0010] As a further improvement of the utility model, a plurality of slide rails are symmetrically arranged on both sides of the inner wall of the drying chamber, and sliders matching the slide rails are arranged on both sides of the storage rack, and the sliders are slidably installed in the slide rails.

[0011] As a further improvement of the present invention, one end of the connecting pipe passes through the air inlet and extends into the heat preservation cavity of the box body, and a plurality of air vents are evenly distributed on the outer wall of the drying chamber, and the air vents are connected to the inner cavity of the drying chamber.

[0012] As a further improvement of the utility model, a diverter plate is provided inside the box body, both ends of the diverter plate are fixedly connected to the inner wall of the box body, the diverter plate is located above the drying chamber, and a gap is provided between the diverter plate and the top wall of the drying chamber.

[0013] As a further improvement of the utility model, an installation cavity is provided at the bottom of the drying chamber, a heater is provided in the installation cavity, a hollow plate is provided on the top of the installation cavity, a hair dryer is installed on one side outer wall of the box body, the air outlet of the hair dryer is connected to an extension tube, the end of the extension tube is inserted into the installation cavity, the air outlet of the extension tube is aligned with the heater, the heater is connected to a power socket, and the power socket is connected to a power cord.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model can remove dust and purify the waste heat and hot air in the push plate kiln by providing a dust removal mechanism and a purification device, so as to obtain clean hot air, and the hot air is transported to the drying box through a connecting pipe, and the outside of the drying chamber is first preheated in the heat preservation chamber of the drying box, and then the heater is started by turning on the power supply so that the heater heats the air in the installation chamber, and then the heated hot air is evenly transported from the hollow plate on the top of the installation chamber into the drying chamber through a hair dryer to dry the material, and further, a plurality of vents are provided on the outer wall of the drying chamber, when the hot air enters the heat preservation chamber from the connecting pipe, At the same time, under the action of the diverter plate on the top of the drying chamber, the hot air is dispersed to both sides and enters the drying chamber from multiple vents, so that the hot air can be gathered from all around the drying box, which is beneficial for the hot air to be evenly distributed inside the drying chamber when the material is dried, avoiding the uneven drying of the material caused by the hot air being sent in one direction. Through this design, the waste hot air can be recycled to dry the material and make rational use of resources. By providing the purified waste hot air with heat source around the drying box, the efficiency of material drying can be improved, and the material can be dried more evenly, thereby reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall cross-sectional view of the utility model.

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 3 It is a cross-sectional view of the dust removal box of the present utility model.

[0019] Figure 4 It is a cross-sectional view of the drying box of the present utility model.

[0020] Figure 5 This is a cross-sectional view of a drying box without a shelf of the utility model.

[0021] In the figure: 1. Push plate kiln body; 101. Exhaust pipe; 102. Solenoid valve 2. Dust removal mechanism; 201. Dust removal box; 202. Filter element; 203. Dust collection bin; 204. Second air inlet; 205. Clean air chamber; 206. High pressure air pump; 207. Pulse valve; 208. Jet pipe; 209. Exhaust pipe; 210. Baffle; 211. Second solenoid valve; 3. Purification device; 301. Purification box; 302. Catalytic bed; 303. Air outlet 1; 304. Connecting pipe; 305. Air supply pipe; 306. Exhaust fan; 4. Drying box; 401. Box body; 402. Insulation chamber; 403. Drying chamber; 404. Storage rack; 405. Slide rail; 406. Slider; 407. Air vent; 408. Diverter plate; 5. Installation cavity; 501. Heater; 502. Hollow plate; 503. Hair dryer; 6. Heat exchanger 1; 7. Heat exchanger 2. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings. Example 1

[0026] See also Figure 1-4The utility model provides a push plate kiln energy-saving waste heat hot air drying device, comprising a push plate kiln body 1, a dust removal mechanism 2, a purification device 3, and a drying box 4. One end of the push plate kiln body 1 is provided with an exhaust port, and the exhaust port is connected with an exhaust pipe 101. The exhaust pipe 101 is connected to the dust removal mechanism 2. The dust removal mechanism 2 is provided with an exhaust pipe 209 on the side away from the exhaust pipe 101. The exhaust pipe 209 is connected with a heat exchanger 6. The purification device 3 includes a purification box 301, a catalytic bed 30 2. The purification box 301 is provided with an air inlet 1, a catalytic bed 302, and an air outlet 1 303 from left to right. The outlet end of the heat exchanger 1 6 is connected to the purification box 301 through a pipeline. The air outlet 1 303 is connected to an air supply pipe 305. The air outlet end of the air supply pipe 305 is connected to the heat exchanger 2 7. The air outlet end of the heat exchanger 2 7 is connected to an exhaust fan 306 through a pipeline. The output end of the exhaust fan 306 is connected to a connecting pipe 304. The connecting pipe 304 is connected to the drying box 4.

[0027] The drying box 4 includes a box body 401 and an air inlet. A drying chamber 403 and a heat preservation chamber 402 are arranged inside the box body 401. The air inlet is connected to the connecting pipe 304. The connecting pipe 304 is inserted into the box body 401 and extends to the top inner wall of the drying chamber 403. A multi-layer detachable storage rack 404 is arranged inside the drying chamber 403. An exhaust port 1 is also arranged on one side of the box body 401.

[0028] The dust removal mechanism 2 includes a dust removal box 201, a filter element 202, and a dust collecting bin 203. An air inlet 204 is provided on the top of the dust removal box 201. The air inlet 204 is connected to the exhaust pipe 101. A solenoid valve 102 is provided on the exhaust pipe 101. A plurality of filter elements 202 are provided in the dust removal box 201. A baffle 210 is provided in the dust removal box 201. The baffle 210 is located between the filter element 202 and the exhaust pipe 101. The dust collecting bin 203 is arranged at the bottom end of the dust removal box 201. An air outlet 2 is provided on one side of the box body 401. The filter element 202 is connected to a dust cleaning mechanism, and the dust cleaning mechanism is installed on one side of the box body 401.

[0029] The exhaust port 1 is provided with a circulation fan, the circulation fan is communicated with the heat preservation chamber 402 , the circulation fan is connected with a filter, and the filter is installed on the outer wall of the box body 401 .

[0030] A plurality of slide rails 405 are symmetrically arranged on both sides of the inner wall of the drying chamber 403 , and sliders 406 matching the slide rails 405 are arranged on both sides of the storage rack 404 , and the sliders 406 are slidably installed in the slide rails 405 .

[0031] When in use, firstly, the rack 404 is installed in the drying chamber 403 by cooperating the sliders 406 on both sides of the rack 404 with the slide rails 405 of the drying chamber 403, and then the material to be dried is placed on the rack 404 in the drying chamber 403, and then the hot air in the kiln body is discharged into the dust removal box 201 through the exhaust pipe 101, so that the hot air containing dust passes through the multiple filter elements 202 in the dust removal box 201 for filtering, and the filtered gas is then discharged from the air outlet, and the filtered hot air is transported to the heat exchanger 6 through the exhaust pipe 209, and preheated under the action of the heat exchanger 6. The preheated hot air can more effectively carry out the oxidation reaction of organic matter, thereby realizing the harmless treatment of the hot air, and the preheated hot air is then transported to the purification box 301, and is input from the air inlet 1 of the purification box 301, and is discharged through the catalytic bed 302 and the air outlet 1 303 in sequence, and finally passes through the heat exchanger 2 7 The purified hot air is transported to the drying box 4 box body 401 to dry the material, so as to realize waste heat recovery and effectively utilize resources. In this embodiment, the waste heat of the exhaust gas in the push plate kiln is recovered and purified by dust filtration and catalysis, which can prevent harmful substances in the exhaust gas from polluting the material when the material is dried. It is safer to use the purified hot air to dry the material. At the same time, a circulating fan is provided in the drying box 4 to maintain air circulation in the drying box 4. A baffle 210 is provided under the air inlet pipe of the dust removal box 201. The baffle 210 can change the direction of the airflow so that the airflow can flow better inside the dust removal chamber, thereby better removing dust and impurities, thereby improving the purification effect of the dust collector, and also preventing the hot air from directly scouring the filter element 202, thereby avoiding the local overload of the filter element 202, thereby ensuring that the filtering load of the filter element 202 is evenly distributed and extending the service life of the filter bag. Example 2

[0032] See also Figure 1 , Figure 3 The dust removal bag is connected to a dust cleaning mechanism, and the dust cleaning mechanism is installed on one side of the box body 401.

[0033] The dust cleaning mechanism includes a high-pressure air pump 206, a pulse valve 207, and an air jet pipe 208. A clean air chamber 205 is provided on one side of the box body 401 close to the second air outlet. The high-pressure air pump 206 is arranged on the outer wall of the clean air chamber 205. The air jet of the high-pressure air pump 206 is communicated with the air jet pipe 208. The pulse valve 207 is provided at one end of the air jet pipe 208 close to the high-pressure air pump 206. The air jet pipe 208 is communicated with one end of the pulse valve 207. An exhaust port 2 is provided at the bottom of the clean air chamber 205. The exhaust port 2 is connected to the exhaust pipe 209. The exhaust pipe 209 is provided with a solenoid valve 211.

[0034] When in use, after the filter element 202 filters the waste heat gas, the solenoid valve 102 on the air inlet 204 and the solenoid valve 211 on the exhaust pipe 209 are closed, and then the pulse valve 207 on the jet pipe 208 is opened. Under the action of the high-pressure air pump 206, a high-speed airflow is sprayed to the filter element 202 to clean the dust thereon, and the blown dust falls into the dust collecting box for collection, thereby cleaning the dust on the valve core. After cleaning the dust on the valve core, the pulse valve 207 is closed, and the solenoid valve 102 on the air inlet 204 and the solenoid valve 211 on the exhaust pipe 209 are opened to carry out the next round of waste heat gas removal. Through this design, the filter element can be clean every time the waste gas is filtered, which is beneficial to filtering the gas and has a better filtering effect. Example 3

[0035] See also Figure 4-5 One end of the connecting pipe 304 passes through the air inlet and extends into the heat preservation chamber 402 of the box body 401 . A plurality of vent holes 407 are evenly distributed on the outer wall of the drying chamber 403 . The vent holes 407 are connected to the inner cavity of the drying chamber 403 .

[0036] A diverter plate 408 is provided inside the box body 401 , and both ends of the diverter plate 408 are fixedly connected to the inner wall of the box body 401 . The diverter plate 408 is located above the drying chamber 403 , and a gap is provided between the diverter plate 408 and the top wall of the drying chamber 403 .

[0037] An installation cavity 5 is provided at the bottom of the drying chamber 403, a heater 501 is provided in the installation cavity 5, a hollow plate 502 is provided on the top of the installation cavity 5, a hair dryer 503 is installed on one side outer wall of the box body 401, the blowing port of the hair dryer 503 is connected to an extension tube, the end of the extension tube is inserted into the installation cavity 5, the blowing port of the extension tube is aligned with the heater 501, the heater 501 is connected to a power socket, and the power socket is connected to a power cord.

[0038] When in use, the hot air is transported to the drying box 4 through the connecting pipe 304. First, the outside of the drying chamber 403 is preheated in the heat preservation chamber 402 of the drying box 4. Then, the heater 501 is started by turning on the power supply, so that the heater 501 heats the air in the installation chamber 5. Then, the heated hot air is evenly transported from the hollow plate 502 at the top of the installation chamber 5 into the drying chamber 403 through the hair dryer 503 to dry the material. Furthermore, a plurality of vents 407 are provided on the outer wall of the drying chamber 403. When the hot air enters the heat preservation chamber 402 from the connecting pipe 304, the hot air is transported to the drying chamber 403 at the top of the drying chamber 403. Under the action of the diverter plate 408, the hot air is dispersed to both sides and enters the drying chamber 403 from multiple air holes 407, so that the hot air can be introduced from all sides of the drying box 4, which is beneficial for evenly distributing the hot air inside the drying chamber 403 when the material is dried, avoiding uneven drying of the material due to unidirectional hot air supply. Through this design, the waste hot air can be recycled to dry the material and make rational use of resources. By providing the purified waste hot air with a heat source around the drying box 4, the efficiency of material drying can be improved, and the material can be dried more evenly, thereby reducing energy consumption.

[0039] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A push plate kiln energy-saving waste heat hot air drying device, characterized in that: The invention comprises a push plate kiln body (1), a dust removal mechanism (2), a purification device (3), and a drying box (4); a waste gas outlet is provided at one end of the push plate kiln body (1); the waste gas outlet is connected to a waste gas pipe (101); the waste gas pipe (101) is connected to the dust removal mechanism (2); an exhaust pipe (209) is provided on a side of the dust removal mechanism (2) away from the waste gas pipe (101); the exhaust pipe (209) is connected to a heat exchanger (6); the purification device (3) comprises a purification box (301) and a catalytic bed (302); the purification box (301) ) are provided with an air inlet 1, a catalytic bed (302), and an air outlet 1 (303) from left to right, the outlet end of the heat exchanger 1 (6) is connected to the purification box (301) through a pipeline, the air outlet 1 (303) is connected to an air supply pipe (305), the outlet end of the air supply pipe (305) is connected to the heat exchanger 2 (7), the outlet end of the heat exchanger 2 (7) is connected to an exhaust fan (306) through a pipeline, the output end of the exhaust fan (306) is connected to a connecting pipe (304), and the connecting pipe (304) is connected to the drying box (4); The drying box (4) comprises a box body (401) and an air inlet. A drying chamber (403) and a heat preservation chamber (402) are provided inside the box body (401). The air inlet is connected to the connecting pipe (304). The connecting pipe (304) is inserted into the box body (401) and extends to the top inner wall of the drying chamber (403). A multi-layer detachable storage rack (404) is provided inside the drying chamber (403). An exhaust port 1 is also provided on one side of the box body (401).

2. The push plate kiln energy-saving waste heat hot air drying device according to claim 1 is characterized in that: The dust removal mechanism (2) comprises a dust removal box (201), a filter element (202), and a dust collection bin (203); a second air inlet (204) is provided at the top of the dust removal box (201); the second air inlet (204) is connected to the exhaust pipe (101); a first solenoid valve (102) is provided on the exhaust pipe (101); a plurality of filter elements (202) are provided in the dust removal box (201); a baffle (210) is provided in the dust removal box (201); the baffle (210) is located between the filter element (202) and the exhaust pipe (101); the dust collection bin (203) is arranged at the bottom end of the dust removal box (201); a second air outlet is provided on one side of the box body (401); the filter element (202) is connected to a dust cleaning mechanism; and the dust cleaning mechanism is installed on one side of the box body (401).

3. The push plate kiln energy-saving waste heat hot air drying device according to claim 2 is characterized in that: The dust cleaning mechanism comprises a high-pressure air pump (206), a pulse valve (207), and an air jet pipe (208); a clean air chamber (205) is provided on one side of the box body (401) close to the second air outlet; the high-pressure air pump (206) is arranged on the outer wall of the clean air chamber (205); the air jet of the high-pressure air pump (206) is communicated with the air jet pipe (208); the pulse valve (207) is provided at one end of the air jet pipe (208) close to the high-pressure air pump (206); the air jet pipe (208) is communicated with one end of the pulse valve (207); an exhaust port (2) is provided at the bottom of the clean air chamber (205); the exhaust port (2) is connected to the exhaust pipe (209); and a second solenoid valve (211) is provided on the exhaust pipe (209).

4. The push plate kiln energy-saving waste heat hot air drying device according to claim 3 is characterized in that: The exhaust port 1 is provided with a circulation fan, the circulation fan is in communication with the heat preservation chamber (402), the circulation fan is connected to a filter, and the filter is installed on the outer wall of the box body (401).

5. The push plate kiln energy-saving waste heat hot air drying device according to claim 1 is characterized in that: A plurality of slide rails (405) are symmetrically arranged on both sides of the inner wall of the drying chamber (403), and sliding blocks (406) matching the slide rails (405) are arranged on both sides of the storage rack (404), and the sliding blocks (406) are slidably installed in the slide rails (405).

6. The push plate kiln energy-saving waste heat hot air drying device according to claim 1 is characterized in that: One end of the connecting pipe (304) passes through the air inlet and extends into the heat preservation cavity (402) of the box body (401); a plurality of ventilation holes (407) are evenly distributed on the outer wall of the drying chamber (403); the ventilation holes (407) are in communication with the inner cavity of the drying chamber (403).

7. The push plate kiln energy-saving waste heat hot air drying device according to claim 6 is characterized in that: A diverter plate (408) is provided inside the box body (401), two ends of the diverter plate (408) are fixedly connected to the inner wall of the box body (401), the diverter plate (408) is located above the drying chamber (403), and a gap is provided between the diverter plate (408) and the top wall of the drying chamber (403).

8. The push plate kiln energy-saving waste heat hot air drying device according to claim 6 is characterized in that: The bottom of the drying chamber (403) is provided with an installation cavity (5), a heater (501) is provided in the installation cavity (5), a hollow plate (502) is provided on the top of the installation cavity (5), a hair dryer (503) is installed on one side outer wall of the box body (401), the air outlet of the hair dryer (503) is connected to an extension tube, the end of the extension tube is inserted into the installation cavity (5), the air outlet of the extension tube is aligned with the heater (501), the heater (501) is connected to a power socket, and the power socket is connected to a power cord.

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