A high-temperature internal circulation drying system for kitchen waste with zero waste gas emissions

Abstract

This utility model discloses a high-temperature internal circulation drying system for kitchen waste with zero waste gas emissions. It includes a drying pot, a filter deodorizer, a latent heat exchanger, a surface cooler, and a refrigerated dryer. The drying outlet of the drying pot is connected to the filter inlet of the filter deodorizer via an exhaust fan. The filter outlet of the filter deodorizer is connected to the hot air inlet of the latent heat exchanger. The hot air outlet of the latent heat exchanger is connected to the heat exchange inlet of the surface cooler, allowing hot air entering from the hot air inlet to pass through the heat exchanger and then exit into the heat exchange inlet of the surface cooler. The surface cooler is connected to the refrigerated dryer, and the cold air outlet is connected to the drying inlet. The advantages are: no waste gas emissions during the entire kitchen waste recycling process, avoiding odor generation; and excellent heat exchange effect achieved through the cooperation of the latent heat exchanger, surface cooler, and especially the refrigerated dryer, saving energy, reducing losses, and improving economic efficiency.

Description

Technical Field

[0001] This utility model relates to a kitchen waste treatment system, specifically a high-temperature internal circulation drying system for kitchen waste with zero waste gas emission. Background Technology

[0002] Currently, more and more complete sets of kitchen waste treatment equipment are being used in the process of treating kitchen waste. In order to achieve high-efficiency kitchen waste treatment, existing conventional complete sets of kitchen waste treatment equipment usually adopt a circulation treatment system. Its basic components are a drying pot, an exhaust fan, and a heat exchanger. Some systems also have filters designed before the heat exchanger to achieve filtration. Thus, the exhaust fan can draw the hot air in the drying pot into the filter and heat exchanger for heat exchange before circulating it back into the drying pot. This existing circulation treatment method has improved efficiency to a certain extent, but it still has the following problems. On the one hand, although a filter is designed, the filtration effect is poor, and odors are produced during the treatment process. On the other hand, although a heat exchanger is designed, its structural design is unreasonable, the heat exchange effect is poor, and the energy consumption is very high. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a high-temperature internal circulation drying system for kitchen waste with reasonable structural design, good heat exchange effect and effective energy saving without exhaust gas emission.

[0004] To solve the aforementioned technical problems, this utility model provides a high-temperature internal circulation drying system for kitchen waste with zero exhaust emissions. The system includes a drying pot with a drying outlet and a drying inlet; a filter deodorizer with a filter inlet and a filter outlet; a latent heat exchanger with a hot air inlet and a hot air outlet, a cold air inlet and a cold air outlet; a surface cooler with a heat exchange inlet and a heat exchange outlet; and a refrigerated dryer with a built-in condensing medium. The drying outlet of the drying pot is connected to the filter inlet of the filter deodorizer via an exhaust fan. The filter outlet of the deodorizer is connected to the hot air inlet of the latent heat exchanger. The hot air outlet of the latent heat exchanger is connected to the heat exchange inlet of the surface cooler, allowing hot air entering from the hot air inlet to pass through the heat exchanger and then exit from the hot air outlet into the heat exchange inlet of the surface cooler. The surface cooler is connected to the refrigerated dryer, and a circulation loop is formed between the refrigerated dryer and the surface cooler through the condensing medium of the refrigerated dryer. The condensed cold and dry air is then discharged from the heat exchange outlet into the cold air inlet of the latent heat exchanger. The cold air outlet is connected to the drying inlet.

[0005] The filter deodorizer includes a filter housing, an air inlet pipe extending from the air inlet into the bottom of the filter housing, an air outlet pipe located at the air outlet on the top of the filter housing, and a baffle plate and a filter screen for impurities located between the air inlet and the air outlet pipe inside the filter housing.

[0006] The bottom periphery of the air inlet duct has a honeycomb-shaped uniformly distributed pressure reducing device.

[0007] Heating devices are provided on the sides and bottom of the drying pot.

[0008] The latent heat exchanger has a hot air duct that connects to the hot air inlet and hot air outlet, and a cold air duct that connects to the cold air inlet and cold air outlet.

[0009] The hot air ducts and cold air ducts are arranged in a crisscross pattern.

[0010] The surface cooler is a finned heat exchanger.

[0011] The advantages of this utility model are: (1) Through the closed-loop circulation system consisting of a drying pot, a filter deodorizer, a latent heat exchanger, a surface cooler and a refrigerated dryer, there is no exhaust gas emission during the entire food waste recycling process, which avoids the generation of odors. In particular, the cooperation between the latent heat exchanger, the surface cooler and especially the refrigerated dryer can achieve a good heat exchange effect, save energy, reduce losses and improve economic efficiency.

[0012] (2) By setting up an air inlet pipe with a honeycomb-shaped uniform pressure reducer and a baffle plate and impurity filter between the air inlet pipe and the air outlet pipe, not only can a good filtration effect be achieved, but also an ozone deodorization effect can be effectively achieved, minimizing the generation of odors.

[0013] (3) The condensing medium of the refrigerated dryer forms a circulation loop with the surface cooler, so that the condensing medium cools and condenses the hot air in the condensing device. The condensed cold and dry air is discharged from the heat exchanger outlet and enters the cold air side inlet of the latent heat exchanger. At the same time, it exchanges heat with the hot air on the hot air side of the latent heat exchanger to raise the temperature and preheat it. It is discharged from the cold air side outlet and enters the drying pot inlet to further supplement the internal heat and achieve better energy saving effect.

[0014] (4) By setting up independent hot air pipes and cold air pipes in the latent heat exchanger and arranging the hot air pipes and cold air pipes in a cross pattern, the heat exchange effect is good and the energy consumption is further reduced. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the principle of the high-temperature internal circulation drying system for kitchen waste with zero waste gas emission.

[0016] Figure 2 This is a three-dimensional structural diagram of the filter deodorizer in this utility model; Figure 3This is a schematic diagram of the main structure of the filter deodorizer in this utility model (with the front shell removed); Figure 4 This is a schematic diagram of the connection structure between the latent heat exchanger and the surface cooler in this utility model. Detailed Implementation

[0017] The following detailed description of the high-temperature internal circulation drying system for kitchen waste with zero waste gas emission, in conjunction with the accompanying drawings and specific embodiments, will be provided in further detail.

[0018] As shown in the figure, the high-temperature internal circulation drying system for kitchen waste with zero exhaust emissions of this utility model includes a drying pot 3 with a drying outlet 1 and a drying inlet 2, a filter deodorizer 6 with a filter inlet 4 and a filter outlet 5, a latent heat exchanger 11 with a hot air side inlet 7 and a hot air side outlet 8, a cold air side inlet 9 and a cold air side outlet 10, a surface cooler 14 with a heat exchange inlet 12 and a heat exchange outlet 13, and a refrigerated dryer 15 with a built-in condensing medium. Heating devices are provided on the sides and bottom of the drying pot 3. The drying outlet of the drying pot 3 is connected to the filter inlet 4 of the filter deodorizer 6 through an exhaust fan 16, which allows the hot air inside the drying pot to enter the filter through the exhaust fan. The filter outlet 5 of the filter deodorizer 6 is connected to the hot air side inlet 7 of the latent heat exchanger 11, which allows the filtered air to enter the filter. Hot air enters the hot air inlet of the latent heat exchanger. The hot air outlet 8 of the latent heat exchanger 11 is connected to the heat exchange inlet 12 of the surface cooler 14, allowing the hot air entering the hot air inlet to pass through the internal pipes of the heat exchanger and then exit from the hot air outlet 8 into the heat exchange inlet of the surface cooler 14. The surface cooler 14 is connected to the refrigerated dryer 15 and can form a circulation loop with the refrigerated dryer 15 through the condensing medium of the refrigerated dryer 15. The condensing medium cools and condenses the hot air in the refrigerated dryer 15. The condensed cold and dry air is discharged from the heat exchange outlet 13 and enters the cold air inlet 9 of the latent heat exchanger. At the same time, it exchanges heat with the hot air on the hot air side of the latent heat exchanger to preheat it. It is then discharged from the cold air outlet 10 and enters the drying inlet 2 to replenish the internal heat (the arrows in the figure only indicate the route and do not represent the actual connection structure).

[0019] Furthermore, the filter deodorizer 6 includes a filter housing 61, an air inlet pipe 62 extending from the filter air inlet 4 into the bottom of the filter housing, an air outlet pipe 63 located at the filter air outlet 5 on the top of the filter housing, and a baffle plate 64 and an impurity filter screen 65 located between the air inlet pipe and the air outlet pipe inside the filter housing. The bottom periphery of the air inlet pipe 62 has a honeycomb-shaped uniform pressure reducer 66. During operation, the hot and humid steam in the drying pot is extracted by the exhaust fan. Using the principle of saturated vapor pressure, the hot and humid steam containing impurities is discharged clean hot and humid steam after passing through the honeycomb-shaped uniform pressure reducer, the impurity filter screen, and ozone deodorization.

[0020] Furthermore, the latent heat exchanger 11 has a hot air duct that connects to the hot air inlet 7 and the hot air outlet 8, and a cold air duct that connects to the cold air inlet 9 and the cold air outlet 10. The hot air duct and the cold air duct are arranged in a crisscross pattern, meaning that heat exchange between hot and cold air is achieved through two separate hot and cold air ducts (e.g., Figure 4 As shown, the hot and cold pipelines cross heat exchange to further supplement the internal heat. After verification, this structural design has achieved a very outstanding energy-saving effect. In addition, the surface cooler 14 mentioned is a finned heat exchanger.

Claims

1. A high-temperature internal circulation drying system for kitchen waste with zero waste gas emission, characterized in that: The equipment includes a drying pot (3) with a drying outlet (1) and a drying inlet (2), a filter deodorizer (6) with a filter inlet (4) and a filter outlet (5), a latent heat exchanger (11) with a hot air inlet (7) and a hot air outlet (8), a cold air inlet (9) and a cold air outlet (10), a surface cooler (14) with a heat exchange inlet (12) and a heat exchange outlet (13), and a refrigerated dryer (15) with a built-in condensing medium. The drying outlet of the drying pot (3) is connected to the filter inlet (4) of the filter deodorizer (6) via a fan (16), and the filter outlet (5) of the filter deodorizer (6) is connected to the latent heat exchanger. The hot air inlet (7) of the heat exchanger (11) and the hot air outlet (8) of the latent heat exchanger (11) are connected to the heat exchange inlet (12) of the surface cooler (14) and can allow the hot air entering from the hot air inlet to pass through the latent heat exchanger and then be discharged from the hot air outlet (8) to enter the heat exchange inlet of the surface cooler (14). The surface cooler (14) is connected to the refrigerated dryer (15) and can form a circulation loop with the surface cooler (14) through the condensing medium of the refrigerated dryer (15) and allow the condensed cold dry air to be discharged from the heat exchange outlet (13) to enter the cold air inlet (9) of the latent heat exchanger. The cold air outlet (10) is connected to the drying inlet (2).

2. The high-temperature internal circulation drying system for kitchen waste with zero waste gas emission according to claim 1, characterized in that: The filter deodorizer (6) includes a filter box (61), an air inlet pipe (62) extending from the filter air inlet (4) into the bottom of the filter box cavity, an air outlet pipe (63) located at the filter air outlet (5) on the top of the filter box, and a baffle plate (64) and an impurity filter screen (65) located between the air inlet pipe and the air outlet pipe inside the filter box.

3. The high-temperature internal circulation drying system for kitchen waste with zero waste gas emission according to claim 2, characterized in that: The bottom periphery of the air inlet pipe (62) has a honeycomb-shaped uniformly distributed pressure reducing device (66).

4. The high-temperature internal circulation drying system for kitchen waste with zero waste gas emission according to claim 1, 2 or 3, characterized in that: Heating devices are provided on the sides and bottom of the drying pot (3).

5. The high-temperature internal circulation drying system for kitchen waste with zero waste gas emission according to claim 4, characterized in that: The latent heat exchanger (11) has a hot air duct that communicates with the hot air inlet (7) and the hot air outlet (8) and a cold air duct that communicates with the cold air inlet (9) and the cold air outlet (10).

6. The high-temperature internal circulation drying system for kitchen waste with zero waste gas emission according to claim 5, characterized in that: The hot air ducts and cold air ducts are arranged in a crisscross pattern.

7. The high-temperature internal circulation drying system for kitchen waste with zero waste gas emission according to claim 6, characterized in that: The surface cooler (14) is a finned heat exchanger.

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