Humidity-heat oxidation device for kitchen garbage

Abstract

The utility model discloses a moist heat oxidation device for kitchen garbage, which comprises a reaction kettle, a stirring mechanism, an oxygen supply device and a circulating mechanism, and the reaction kettle is provided with a feed port, a discharge port, a circulating inlet, a circulating outlet and a sand discharge port; the oxygen supply device comprises air supply rings, a main air pipe and air supply units, the main air pipe is provided with a plurality of groups of branch air pipes extending into the reaction kettle, each branch air pipe is provided with an air supply ring located in the reaction kettle, each air supply ring is formed by enclosing a plurality of groups of unit pipes, each unit pipe is provided with a plurality of air outlet micropores, one end of each unit pipe is provided with a first connecting flange, and the other end of each unit pipe is provided with a second connecting flange; one end of each unit pipe is provided with a first connecting flange, the other end of each unit pipe is provided with an inserting pipe, the inserting pipes of the unit pipes can be inserted into the first connecting flange ends of the adjacent unit pipes in a sealed mode, the peripheries of the unit pipes are sleeved with filtering sleeves, the two ends of each filtering sleeve are provided with second connecting flanges, and the first connecting flanges are fixedly connected with the adjacent second connecting flanges. The damp-heat oxidation efficiency is improved; meanwhile, the problem that the air outlet micropores are easily blocked is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen waste treatment, in particular to a wet heat oxidation device for kitchen waste. Background Art

[0002] Kitchen waste is a common waste in daily life. The composition of kitchen waste is complex, and it is generally composed of a mixture of various substances such as oil, water, fruit peels, bones, meat, vegetable soup, tea and paper towels. If kitchen waste is directly discharged into the natural environment, it will easily rot and produce odor, which will inevitably cause ecological environment pollution. Kitchen waste contains a large amount of solid organic matter, which can be recycled. When recycling, the kitchen waste must first be subjected to hot and wet hydrolysis and then three-phase separation before it can be used specifically. However, since kitchen waste often contains a certain amount of sediment, the presence of sediment can cause harm to kitchen waste treatment equipment, especially to the three-phase separator, and it is easy to cause damage and wear to the roller surface, seriously affecting the stability and service life of the three-phase separator. For this reason, technicians have designed a kitchen waste hot and wet hydrolysis treatment device (application publication number CN210138928U), which effectively removes the sediment in the kitchen waste by setting a dust collector at the bottom of the reactor; another example is a vertical steam rotary hot and wet hydrolysis device (application publication number CN116251824A), which has a sand discharge pipe at the bottom, which also effectively removes the sediment in the kitchen waste. However, the above-mentioned kitchen waste hot and wet oxidation device still has the problems of low oxidation efficiency and easy clogging of the air outlet nozzle. Summary of the invention

[0003] The purpose of the utility model is to provide a wet heat oxidation device for kitchen waste, which increases the oxygen supply and efficiency by arranging multiple groups of air supply rings in a reactor, thereby improving the wet heat oxidation efficiency; at the same time, a filter sleeve is arranged on the periphery of the air supply ring, which can effectively solve the problem that the air outlet micropores of the air supply ring are easily blocked.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: a wet heat oxidation device for kitchen waste, comprising:

[0005] The reactor is provided with a feed inlet, a discharge port, a circulation inlet, a circulation outlet and a sand discharge port. The feed inlet is arranged at the top of the reactor, a heating device is arranged at the front end of the feed inlet, and the sand discharge port is arranged at the bottom of the reactor;

[0006] The stirring mechanism comprises a driver and a stirring shaft connected to the output end of the driver, wherein the stirring shaft is provided with a plurality of stirring blades spaced apart along the axial direction thereof;

[0007] An oxygen supply device comprises an air supply ring, a main air pipe and an air supply unit connected to the main air pipe, the main air pipe is provided with a plurality of bronchial tubes extending into a reactor, each bronchial tube is equipped with an air supply ring located in the reactor, the air supply ring is formed by being surrounded by a plurality of unit tubes, a plurality of air outlet micropores are provided on the unit tubes, a first connecting flange is provided at one end of the unit tubes, a plug-in tube is provided at the other end of the unit tubes, the plug-in tube of the unit tube can be sealed and plugged into the first connecting flange end of an adjacent unit tube, a filter sleeve is provided on the outer periphery of the unit tube, a second connecting flange is provided at both ends of the filter sleeve, and the first connecting flange is fixedly connected to the adjacent second connecting flange;

[0008] The circulation mechanism is provided with a circulation pipe connecting a circulation inlet and a circulation outlet and a circulation pump arranged on the circulation pipe.

[0009] Furthermore, one end of the bronchus is formed on one of the unit pipes, and the other end of the bronchus is provided with a third connecting flange. The main air pipe is provided with a connecting pipe at a position corresponding to the bronchus, and the connecting pipe is provided with a fourth connecting flange. A switch valve is connected between the third connecting flange and the fourth connecting flange.

[0010] Furthermore, the first connecting flange is provided with a slot adapted to the plug-in tube, the inner end of the slot is provided with a step surface, a sealing gasket is provided between the end surface of the plug-in tube and the step surface, and the first connecting flange and the second connecting flange are fixedly connected to clamp the sealing gasket.

[0011] Furthermore, an annular groove is provided on the inner wall of the slot, a sealing ring is embedded in the annular groove, and the sealing ring is in sealing cooperation with the plug-in tube.

[0012] Furthermore, the circulation pipe includes an upper adapter, a vertical pipe and a lower transverse pipe connected in sequence, the lower transverse pipe is provided with an extension portion located outside the vertical pipe, a filter assembly is provided in the extension portion, the filter assembly includes a center rod and a filter mesh plate, a sealing plate and a connecting ring arranged on the center rod from the inside to the outside, the filter mesh plate is arranged at the position of the circulation outlet, the sealing plate is sealed with the extension portion, and the connecting ring is fixedly connected to the extension portion.

[0013] Furthermore, the reactor includes a cylindrical portion and a conical portion arranged at the lower end of the cylindrical portion, the upper end sealing cover of the cylindrical portion is provided with a top cover, the driver is fixedly arranged on the top cover, the upper end of the stirring shaft is rotatably connected to the top cover, the bottom of the cylindrical portion is fixedly connected to a fixing rod, and the lower end of the stirring shaft is rotatably connected to the fixing rod.

[0014] Furthermore, the sand discharge port is arranged at the bottom of the cone portion, and a stop valve is provided at a position of the cone portion corresponding to the sand discharge port.

[0015] Furthermore, the discharge port is arranged at the lower end of the cylindrical part, and the top cover is also provided with a safety port, and a safety valve is provided at the safety port.

[0016] Furthermore, a temperature detection probe is provided in the reactor, and the temperature of the material inside the reactor is detected by the temperature detection probe.

[0017] In summary, the utility model has the following beneficial effects:

[0018] The wet heat oxidation device of the utility model is used to increase the oxygen supply amount and oxygen supply efficiency by arranging multiple groups of air supply rings in the reaction kettle, thereby improving the wet heat oxidation efficiency; at the same time, a filter sleeve is arranged on the periphery of the air supply ring, which can effectively solve the problem that the air outlet micropores of the air supply ring are easily blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the stirring mechanism and oxygen supply device of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the circulation mechanism of the utility model.

[0022] Figure 4 The utility model Figure 3 Enlarged view of point A.

[0023] Figure 5 It is a transverse cross-sectional view of the air supply ring of the utility model.

[0024] Figure 6 The utility model Figure 5 Enlarged view of point B.

[0025] Figure 7 It is a structural schematic diagram of the unit tube of the utility model.

[0026] Figure 8 It is a schematic diagram of the upstream and downstream structures of the utility model.

[0027] In the figure: 10, reactor; 11, feed port; 12, discharge port; 13, circulation inlet; 14, circulation outlet; 15, sand discharge port; 16, heating device; 17, safety port; 18, fixing rod; 20, stirring mechanism; 21, driver; 22, stirring shaft; 23, stirring blade; 30, oxygen supply device; 31, air supply ring; 311, unit tube; 312, air outlet micropore; 313, first connecting flange; 314, plug-in tube; 315, step surface; 316, sealing pad; 317, sealing ring; 32, main air pipe; 321, connecting pipe; 322, fourth connecting flange; 33 , bronchial tube; 331, third connecting flange; 34, filter sleeve; 341, second connecting flange; 35, switch valve; 40, circulation mechanism; 41, circulation pipe; 411, upper adapter; 412, vertical pipe; 413, lower horizontal pipe; 414, extension; 42, circulation pump; 43, filter assembly; 431, center rod; 432, filter mesh plate; 433, sealing plate; 434, connecting ring; 50, stop valve; 60, temperature detection probe; 70, pretreatment device; 71, hopper; 72, crusher; 73, sorting pulping machine; 74, grinding pump; 80, fertilizer making device. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings.

[0029] like Figure 1-8 As shown, a wet thermal oxidation device for kitchen waste, the upstream of the wet thermal oxidation device is a pretreatment device 70, the downstream of the wet thermal oxidation device can be a fertilizer making device 80, the wet thermal oxidation device includes a reactor 10, a stirring mechanism 20, an oxygen supply device 30 and a circulation mechanism 40, which basically constitute the basic structure of the present utility model.

[0030] The pretreatment device 70 includes a hopper 71, a crusher 72, a sorting pulping machine 73 and a grinding pump 74 which are connected in sequence. A heating device 16 is provided between the grinding pump 74 and the reactor 10. The pretreated kitchen waste is heated by the heating device 16 and finally pumped to the feed port 11 of the reactor 10 under the action of the pumping device. The fertilizer making device 80 is a prior art and will not be described in detail in the utility model. For details, reference may be made to a hydrothermal treatment system for perishable organic waste disclosed in a Chinese patent (application publication number CN116174448A).

[0031] The reactor 10 is provided with a feed port 11, a discharge port 12, a circulation inlet 13, a circulation outlet 14 and a sand discharge port 15. The feed port 11 is arranged at the top of the reactor 10, a heating device 16 is arranged at the front end of the feed port 11, and the sand discharge port 15 is arranged at the bottom of the reactor 10.

[0032] The stirring mechanism 20 includes a driver 21 and a stirring shaft 22 connected to the output end of the driver 21. Specifically, the driver 21 includes a motor and a reduction mechanism connected to the output end of the motor. The driver 21 drives the stirring shaft 22 to rotate after being reduced in speed by the reduction mechanism. The stirring shaft 22 is provided with a plurality of groups of stirring blades 23 arranged at intervals along its axial direction. Each group of stirring blades 23 is provided with a plurality of blades and are arranged circumferentially along the stirring shaft 22.

[0033] The oxygen supply device 30 includes an air supply ring 31, a main air pipe 32 and an air supply unit connected to the main air pipe 32. The air supply unit can be an air compressor. The main air pipe 32 is provided with a plurality of bronchial pipes 33 extending into the reactor 10. Each bronchial pipe 33 is equipped with an air supply ring 31 located in the reactor 10. The air supply ring 31 and the stirring blade 23 are arranged alternately up and down. The air supply ring 31 is formed by being surrounded by a plurality of unit pipes 311. The unit pipe 311 is provided with a plurality of air outlet micropores 312. One end of the unit pipe 311 is provided with a first connecting flange 313. The other end of the unit pipe 311 is provided with a plug-in pipe 314. The plug-in pipe 311 The tube 314 can be sealed and inserted into the first connecting flange 313 end of the adjacent unit tube 311. The outer periphery of the unit tube 311 is provided with a filter sleeve 34. Both ends of the filter sleeve 34 are provided with a second connecting flange 341. The first connecting flange 313 is fixedly connected to the adjacent second connecting flange 341. The filter sleeve 34 is consistent with the curvature of the unit tube 311. Specifically, an annular gap is provided between the filter sleeve 34 and the unit tube 311. During assembly, the filter sleeve 34 is first inserted into the plug-in tube 314 side of the unit tube 311, and then the first connecting flange 313 is combined with the two adjacent second connecting flanges 341 into one body through fasteners.

[0034] The circulation mechanism 40 is provided with a circulation pipe 41 connecting the circulation inlet 13 and the circulation outlet 14 and a circulation pump 42 arranged on the circulation pipe 41 .

[0035] One end of the bronchial tube 33 is formed on one of the unit tubes 311, and the other end of the bronchial tube 33 is provided with a third connecting flange 331. The bronchial tube 33 passes through the reactor 10 and is sealed with the reactor 10. The main air pipe 32 is provided with a connecting pipe 321 at the position corresponding to the bronchial tube 33, and the connecting pipe 321 is provided with a fourth connecting flange 322. A switch valve 35 is connected between the third connecting flange 331 and the fourth connecting flange 322. The corresponding bronchial tube 33 is controlled by the switch valve 35, so that any group of bronchial tubes 33 can be selectively enabled.

[0036] The first connection flange 313 is provided with a slot adapted to the plug-in tube 314, a step surface 315 is provided at the inner end of the slot, a sealing gasket 316 is provided between the end surface of the plug-in tube 314 and the step surface 315, and the first connection flange 313 and the second connection flange 341 are fixedly connected to clamp the sealing gasket 316. Furthermore, an annular groove is provided on the inner wall of the slot, and a sealing ring 317 is embedded in the annular groove. The sealing ring 317 is in sealing cooperation with the plug-in tube 314. Through this arrangement, the sealing between adjacent unit tubes 311 can be ensured to prevent the liquid in the reactor 10 from entering the unit tube 311.

[0037] The circulation pipe 41 includes an upper adapter 411, a vertical pipe 412 and a lower transverse pipe 413 connected in sequence. The lower transverse pipe 413 is provided with an extension portion 414 located outside the vertical pipe 412. A filter assembly 43 is provided in the extension portion 414. The filter assembly 43 includes a central rod 431 and a filter screen plate 432, a sealing plate 433 and a connecting ring 434 arranged on the central rod 431 from the inside to the outside. The filter screen plate 432 is arranged at the position of the circulation outlet 14. The sealing plate 433 is sealed with the extension portion 414. The connecting ring 434 is The extension portion 414 is fixedly connected. Specifically, a first flange is provided at the outer end of the extension portion 414. The connecting ring 434 and the first flange are provided with corresponding connecting holes. The connecting ring 434 and the first flange are fixedly connected as a whole by a bolt group. Through the setting of the filter assembly 43, large particles of impurities can be blocked outside the circulation pipe 41, thereby preventing the circulation pipe 41 from being blocked and the circulation pump 42 from being damaged. Preferably, the filter mesh plate 432 is threadedly connected to the center rod 431, thereby enabling the filter mesh plate 432 to be replaced regularly.

[0038] The reactor 10 includes a cylindrical portion and a conical portion arranged at the lower end of the cylindrical portion. The upper end sealing cover of the cylindrical portion is provided with a top cover. The driver 21 is fixedly arranged on the top cover. The upper end of the stirring shaft 22 is rotatably connected to the top cover. The bottom of the cylindrical portion is fixedly connected to a fixing rod 18. The lower end of the stirring shaft 22 is rotatably connected to the fixing rod 18. The bottom of the reactor 10 is arranged in a conical shape to better play the role of sand discharge. The sand discharge port 15 is arranged at the bottom of the conical portion. The conical portion is provided with a stop valve 50 at the position corresponding to the sand discharge port 15. The stop valve 50 is used to control the opening and closing of the sand discharge port 15.

[0039] The discharge port 12 is arranged at the lower end of the cylindrical part, and the top cover is also provided with a safety port 17, at which a safety valve is arranged, which plays a safety role and prevents the internal pressure of the reactor 10 from being too high and causing potential safety hazards.

[0040] The reactor 10 is provided with a temperature detection probe 60 , and the temperature of the material inside the reactor 10 is detected by the temperature detection probe 60 .

[0041] The wet heat oxidation device of the present invention is used to increase the oxygen supply amount and oxygen supply efficiency by arranging multiple groups of air supply rings 31 in the reactor 10, thereby improving the wet heat oxidation efficiency; at the same time, a filter sleeve 34 is arranged on the periphery of the air supply ring 31, which can effectively solve the problem that the air outlet micropores 312 of the air supply ring 31 are easily blocked.

[0042] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A wet thermal oxidation device for kitchen waste, characterized in that: include A reaction kettle (10) is provided with a feed inlet (11), a discharge port (12), a circulation inlet (13), a circulation outlet (14) and a sand discharge port (15); the feed inlet (11) is arranged at the top of the reaction kettle (10); a heating device (16) is arranged at the front end of the feed inlet (11); and the sand discharge port (15) is arranged at the bottom of the reaction kettle (10); The stirring mechanism (20) comprises a driver (21) and a stirring shaft (22) connected to the output end of the driver (21), wherein the stirring shaft (22) is provided with a plurality of stirring blades (23) spaced apart along its axial direction; The oxygen supply device (30) comprises an air supply ring (31), a main air pipe (32) and an air supply unit connected to the main air pipe (32), wherein the main air pipe (32) is provided with a plurality of bronchial tubes (33) extending into the reactor (10), each bronchial tube (33) is equipped with an air supply ring (31) located in the reactor (10), and the air supply ring (31) is formed by being surrounded by a plurality of unit tubes (311), wherein the unit tubes (311) are provided with a plurality of air outlet micropores (312), and the unit tubes (311) are provided with a plurality of air outlet micropores (312). A first connecting flange (313) is provided at one end, and a plug-in pipe (314) is provided at the other end of the unit pipe (311). The plug-in pipe (314) of the unit pipe (311) can be sealed and plugged into the first connecting flange (313) end of the adjacent unit pipe (311). A filter sleeve (34) is provided on the outer periphery of the unit pipe (311). Second connecting flanges (341) are provided at both ends of the filter sleeve (34). The first connecting flange (313) is fixedly connected to the adjacent second connecting flange (341). The circulation mechanism (40) is provided with a circulation pipe (41) connecting a circulation inlet (13) and a circulation outlet (14) and a circulation pump (42) arranged on the circulation pipe (41).

2. A wet thermal oxidation device for kitchen waste according to claim 1, characterized in that: One end of the bronchial tube (33) is formed on one of the unit tubes (311), and the other end of the bronchial tube (33) is provided with a third connecting flange (331). The main air pipe (32) is provided with a connecting pipe (321) at a position corresponding to the bronchial tube (33), and the connecting pipe (321) is provided with a fourth connecting flange (322). A switch valve (35) is connected between the third connecting flange (331) and the fourth connecting flange (322).

3. The wet thermal oxidation device for kitchen waste according to claim 1, characterized in that: The first connecting flange (313) is provided with a slot matched with the plug-in tube (314), the inner end of the slot is provided with a step surface (315), a sealing gasket (316) is provided between the end surface of the plug-in tube (314) and the step surface (315), and the first connecting flange (313) and the second connecting flange (341) are fixedly connected to clamp the sealing gasket (316).

4. A wet thermal oxidation device for kitchen waste according to claim 3, characterized in that: The inner wall of the slot is provided with an annular groove, in which a sealing ring (317) is embedded, and the sealing ring (317) is in sealing cooperation with the plug-in tube (314).

5. The wet thermal oxidation device for kitchen waste according to claim 1, characterized in that: The circulation pipe (41) comprises an upper adapter (411), a vertical pipe (412) and a lower transverse pipe (413) which are connected in sequence; the lower transverse pipe (413) is provided with an extension portion (414) located outside the vertical pipe (412); a filter assembly (43) is provided inside the extension portion (414); the filter assembly (43) comprises a central rod (431) and a filter screen plate (432), a sealing plate (433) and a connecting ring (434) which are arranged on the central rod (431) from inside to outside; the filter screen plate (432) is arranged at the position of the circulation outlet (14); the sealing plate (433) is sealed with the extension portion (414); and the connecting ring (434) is fixedly connected with the extension portion (414).

6. A wet thermal oxidation device for kitchen waste according to claim 1, characterized in that: The reaction kettle (10) comprises a cylindrical portion and a conical portion arranged at the lower end of the cylindrical portion, the upper end sealing cover of the cylindrical portion is provided with a top cover, the driver (21) is fixedly arranged on the top cover, the upper end of the stirring shaft (22) is rotatably connected to the top cover, the bottom of the cylindrical portion is fixedly connected to a fixing rod (18), and the lower end of the stirring shaft (22) is rotatably connected to the fixing rod (18).

7. A wet thermal oxidation device for kitchen waste according to claim 6, characterized in that: The sand discharge port (15) is arranged at the bottom of the conical portion, and a stop valve (50) is arranged at a position of the conical portion corresponding to the sand discharge port (15).

8. The wet thermal oxidation device for kitchen waste according to claim 6, characterized in that: The discharge port (12) is arranged at the lower end of the cylindrical portion, and the top cover is also provided with a safety port (17), and a safety valve is provided at the safety port (17).

9. The wet thermal oxidation device for kitchen waste according to claim 1, characterized in that: A temperature detection probe (60) is provided in the reactor (10), and the temperature of the material inside the reactor (10) is detected by the temperature detection probe (60).

Images