Garbage warehousing heating system

Abstract

The utility model provides a garbage warehousing heating system, which comprises a sand setting and solid reducing system for treating kitchen garbage and obtaining high-temperature lean-oil wastewater; the pressurizing system is connected with the sand setting and solid reducing system and is used for pressurizing the wastewater; the pressurizing system is used for pressurizing waste water, the filtering system is connected with the pressurizing system and is used for filtering the pressurized waste water, the spraying system is connected with the filtering system and is used for spraying the pressurized and filtered waste water to a garbage bin and heating garbage in the bin, and high-temperature lean oil waste water is introduced into the garbage bin to be sprayed back after being subjected to sand setting solid reduction, pressurizing and filtering. And the internal fermentation temperature after garbage stacking is increased, fermentation is promoted, and the ton of garbage entering the furnace is increased. Meanwhile, the content of fine broken fibers in the kitchen high-temperature lean oil wastewater is reduced through raw garbage filtration, the treatment pressure on a leachate membrane system caused by direct discharge of the kitchen high-temperature lean oil wastewater into a leachate station is avoided, the blockage of the membrane system is relieved, and the maintenance pressure of other systems is relieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the garbage processing field especially, and relates to a garbage warehouse heating system. BACKGROUND

[0002] In the garbage processing field, high-temperature lean oil wastewater is generated in the kitchen garbage processing process, for example, taking 75 tons / day of kitchen garbage as an example, the kitchen high-temperature lean oil wastewater is collected by a wastewater pool with a volume of 85 m 3 , and the daily production of the high-temperature lean oil wastewater is about 78.87 m 3 , the water temperature is 65-75 DEG C, at present, the kitchen high-temperature lean oil wastewater is directly transported to a water treatment adjusting pool by a waste liquid discharge pump, the drainage flow is 20-28 m 3 / h, and heat loss exists. In addition, the high-temperature lean oil wastewater is directly discharged into a leachate treatment system, and long-time use will cause the anaerobic tank pipeline to be blocked, regular overhaul and pipeline cleaning are needed, and the normal service life of the anaerobic system is affected. UTILITY MODEL CONTENT

[0003] The utility model solves the technical problems that the existing kitchen high-temperature lean oil wastewater is directly discharged into a water treatment adjusting pool, heat loss exists, direct discharge increases the cost of later system maintenance, and the utility model provides a garbage warehouse heating system to solve the above problems.

[0004] The utility model adopts the technical scheme that a garbage warehouse heating system comprises a sand setting and solid reduction system, wastewater with high-temperature lean oil is obtained by processing kitchen garbage, a pressurizing system is connected with the sand setting and solid reduction system, and the wastewater is pressurized, a filtering system is connected with the pressurizing system, and the pressurized wastewater is filtered, a spraying system is connected with the filtering system, the pressurized and filtered wastewater is sprayed into a garbage warehouse, and the garbage in the warehouse is heated.

[0005] Further, the sand setting and solid reduction system comprises a temporary storage tank, a sand setting machine, a filter press, a combined heater and a three-phase centrifuge which are sequentially connected, the kitchen garbage in the temporary storage tank is subjected to sand setting treatment by the sand setting machine, the treated raw liquid is obtained by filter pressing of the kitchen garbage, the raw liquid is heated in the combined heater, the three-phase centrifuge is used for centrifugal separation of the raw liquid, the wastewater with high-temperature lean oil is obtained, and the temporary storage tank and the sand setting machine are connected by a conveying pump.

[0006] Further, the pressurizing system comprises a hot water collecting pool receiving the wastewater output by the three-phase centrifuge and a jet pump group communicated with the hot water collecting pool, and a recirculation pipe communicated with the hot water collecting pool is arranged at the outlet of the jet pump group.

[0007] Further, the jet pump group comprises two parallel connected horizontal centrifugal pumps.

[0008] Further, the filter system comprises a self-cleaning filter, an inlet of the self-cleaning filter is communicated with an outlet of the jet pump group, and a residue outlet of the self-cleaning filter is communicated with the garbage bin.

[0009] Further, the spraying system comprises a plurality of spraying pipes, and the spraying pipes are communicated with an outlet of the self-cleaning filter.

[0010] The garbage bin heating system of the utility model has the advantages that high-temperature poor-oil wastewater is introduced into the garbage bin for back spraying after sand setting and solid reduction, pressurization and filtration, the internal fermentation temperature of the garbage after stacking is improved, fermentation is promoted, and the tonnage of the garbage entering the furnace is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model is further described below in combination with the drawings and examples.

[0012] Figure 1 is a system schematic view of the garbage bin heating system of the utility model;

[0013] Figure 2 is a system schematic view of the sand setting and solid reduction system;

[0014] Figure 3 is a system schematic view of the pressurization system;

[0015] Figure 4 is a system schematic view of the filter system;

[0016] Figure 5 is a system schematic view of the spraying system;

[0017] 1, sand setting and solid reduction system, 2, pressurization system, 3, filter system, 4, spraying system, 5, temporary storage tank, 6, sand setting machine, 7, filter press, 8, combined heater, 9, three-phase centrifuge, 10, hot water collecting pool, 11, jet pump group, 12, recirculation pipe, 13, horizontal centrifugal pump, 14, self-cleaning filter, 15, spraying pipe. DETAILED DESCRIPTION

[0018] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and should not be understood as limiting the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0019] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0020] In addition, the terms "first", "second" and the like are only for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0021] Any process or method descriptions in flow charts or otherwise described herein, represent embodiments which can be understood as a module, segment, or portion of code which includes one or more executable instructions for implementing specific logical functions or steps in the process. The scope of preferred embodiments of the present application includes additional implementation in which the functions are performed in different orders, in substantially simultaneous fashion, or in reverse order, according to the functions involved, as will be understood by those skilled in the art of the embodiments of the present application.

[0022] As Figures 1-5The utility model provides a kind of garbage into bin heating system, including sand setting and solid reduction system 1, wastewater of high-temperature lean oil is obtained by processing kitchen garbage;Pressurization system 2 is connected with the sand setting and solid reduction system 1, and the wastewater is pressurized;Filter system 3 is connected with the pressurization system 2, and the pressurized wastewater is filtered, spraying system 4 is connected with the filter system 3, and the pressurized and filtered wastewater is sprayed to garbage bin, and the garbage in bin is heated.

[0023] The technical solution provides how to cooperate between each subsystem to finally complete the technical target of the overall garbage into bin heating system.As for how to connect various control and measurement elements such as valves, pressure gauges and other technical details inside each subsystem, it is the existing technical knowledge of fluid control and process equipment, and the person skilled in the art can implement it according to the implementation purpose of each subsystem, so it is not described in detail in the technical solution.

[0024] After the kitchen garbage is treated by the sand setting and solid reduction system 1, 65-75℃ high-temperature lean oil wastewater is obtained, and the system utilizes the above wastewater, removes the impurities inside after pressurization through the filter system 3, and then sprays the filtered wastewater to the surface of the garbage by the spraying system 4 to accelerate the garbage fermentation through heat conduction.

[0025] By increasing the internal fermentation temperature of the garbage after stacking, the garbage fermentation is promoted, and the tonnage of garbage into the furnace is improved.Meanwhile, by filtering the raw garbage, the content of fine and broken fibers in the kitchen high-temperature lean oil wastewater is reduced, the treatment pressure on the leachate membrane system caused by directly discharging the wastewater into the leachate station is avoided, and the clogging of the membrane system is reduced.

[0026] The sand setting and solid reduction system 1 includes a temporary storage tank 5, a sand setting machine 6, a filter press 7, a combined heater 8 and a three-phase centrifuge 9 connected in sequence, the kitchen garbage in the temporary storage tank 5 is treated by the sand setting machine 6, and the treated raw liquid is obtained by the filter press 7, and then the combined heater 8 is used for heating, the three-phase centrifuge 9 is used for centrifugal separation of the raw liquid to obtain the wastewater of high-temperature lean oil, and the temporary storage tank 5 and the sand setting machine 6 are connected by a conveying pump.

[0027] The kitchen garbage in the temporary storage tank 5 is sent into the sand setting machine 6 by the conveying pump, the conveying pump is a slurry conveying pump, the preliminary solid-liquid separation is realized by the sand setting machine 6, and the treated raw liquid is obtained.The treated raw liquid is heated in the combined heater 8, and then the three-phase centrifuge 9 is used for separation operation again, and the wastewater of high-temperature lean oil is obtained after multiple treatments such as sand setting, solid reduction and separation, and the temperature of the wastewater is about 65-75℃ under normal circumstances, which is convenient for subsequent use.

[0028] The pressurizing system 2 comprises a hot water collecting pool 10 receiving the output waste water of the three-phase centrifuge 9 and a jet pump set 11 connected to the hot water collecting pool 10, and a recirculation pipe 12 is arranged at the outlet of the jet pump set 11 and connected to the hot water collecting pool 10.

[0029] The pressurizing system 2 is mainly used for pressurizing the high-temperature lean oil waste water, on one hand to provide power for the waste water to flow to the next process, and on the other hand to facilitate the final spraying operation. When pressurizing, the waste water flowing from the previous three-phase centrifuge 9 is collected by the hot water collecting pool 10, and the waste water is pressurized by the jet pump set 11.

[0030] The jet pump set 11 is controlled by frequency conversion and connected to the DCS by PLC. The pump flow is 30 m3 / h, the lift is 50 m, the through-flow part is made of 304 stainless steel, and the inlet and outlet flanges are DN100. The system pipeline is made of 304 stainless steel, and the pump outlet main pipe is provided with a temperature sensor, a pressure sensor and a flow monitoring device for monitoring the related parameters of the high-temperature waste water in the pump outlet main pipe and for related automatic control.

[0031] The outlet of the jet pump set 11 is provided with the recirculation pipe 12 and a stainless steel recirculation valve. When the spraying is paused due to the approach of the garbage grab bucket, the high-temperature waste water stops being sprayed into the bin, and the pump enters self-circulation operation. When the monitoring system over-pressurizes, the pump automatically stops running.

[0032] The jet pump set 11 comprises two parallel horizontal centrifugal pumps 13. The two pumps are used in a one-for-one backup mode, which guarantees the continuous operation ability and reliability of the system.

[0033] The filtering system 3 comprises a self-cleaning filter 14, the inlet of which is connected to the outlet of the jet pump set 11, and the slag discharge port of which is connected to the garbage bin. The pressurized high-temperature waste water enters the self-cleaning filter 14 for further filtration to improve the water quality. The waste water flows into the self-cleaning filter 14 from the inlet, and flows out from the outlet after filtration. The system is equipped with two self-cleaning filters 14, which are used in a one-for-one backup mode. The filter material is made of 304 stainless steel, and the flow is 40 m3 / h. The filter is regularly cleaned by an electric backwashing device to ensure the filtering effect, and the generated waste water and slag are discharged into the garbage bin through the slag discharge port.

[0034] The spray system 4 comprises several spray pipes 15 which are communicated with the outlet of the self-cleaning filter 14. The high-temperature waste water filtered by the self-cleaning filter 14 finally enters the spray pipes 15 of the spray system 4 of the garbage bin. The spray pipes 15 are DN32 branch pipes which are led to the lower sides of both sides of the discharge door and on which electric valve groups are installed for controlling the spray guns at the ends of the branch pipes to spray. One set of single-fluid spray gun is arranged at the lower side of each of both sides of the discharge door, the spray gun adopts a DN32 detachable fan-shaped nozzle with a flow rate of 3.5 m3 / h and a material of 316L and is connected to the branch pipe through a stainless steel hose.

[0035] Two sets of photoelectric switches are installed at each discharge door, one set of which is used for monitoring the opening and closing state of the discharge door and the other set of which is used for detecting the position of the garbage grab of the garbage crane. When the photoelectric switch A detects that the discharge door is opened, the photoelectric switch A sends a signal to open the electric valves on the branch pipes at both sides of the corresponding discharge door through the PLC control, and the waste water starts to spray. During the spraying process, when the photoelectric switch B detects that the garbage grab of the garbage crane approaches the discharge door, the photoelectric switch B sends a signal to close the electric valves on the branch pipes at both sides of the corresponding discharge door through the PLC control to stop the spraying. At the same time, manual spraying control devices are arranged on the branch pipes of the discharge door, which can be used to manually control the spraying when necessary.

[0036] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of the claims.

Claims

1. A waste charging and heating system, characterized by: The application relates to a sand setting and solid reduction system (1) for processing kitchen garbage and obtaining high-temperature lean oil wastewater. A pressurization system (2) connected with the sand setting and solid reduction system (1) is used to pressurize the wastewater. A filtration system (3) connected with the pressurization system (2) is used to filter the pressurized wastewater. A spraying system (4) connected with the filtration system (3) is used to spray the pressurized and filtered wastewater to a garbage bin to heat the garbage in the bin. The sand setting and solid reduction system (1) comprises a temporary storage tank (5), a sand setting machine (6), a filter press (7), a combined heater (8) and a three-phase centrifuge (9) connected in sequence.

2. A waste charging and heating system as claimed in claim 1, wherein: The kitchen garbage in the temporary storage tank (5) is subjected to sand setting treatment by the sand setting machine (6), and then is subjected to filter pressing by the filter press (7) to obtain a treatment raw liquid which is transferred to the combined heater (8) for heating.

3. A waste charging and heating system as claimed in claim 2, wherein: The three-phase centrifuge (9) is used for centrifugal separation of the raw liquid to obtain high-temperature lean oil wastewater.

4. A waste charging and heating system as claimed in claim 3, wherein: The temporary storage tank (5) and the sand setting machine (6) are connected through a conveying pump.

5. A waste charging and heating system as claimed in claim 4, wherein: The pressurization system (2) comprises a hot water collecting pool (10) for receiving the wastewater output by the three-phase centrifuge (9) and a jet pump group (11) communicated with the hot water collecting pool (10).

6. A waste charging and heating system as claimed in claim 5, wherein: The outlet of the jet pump group (11) is provided with a recirculation pipe (12) communicated with the hot water collecting pool (10). The jet pump group (11) comprises two parallel horizontal centrifugal pumps (13). The filtration system (3) comprises a self-cleaning filter (14), the inlet of the self-cleaning filter (14) is communicated with the outlet of the jet pump group (11), and the slag discharge port of the self-cleaning filter (14) is communicated with the garbage bin. The spraying system (4) comprises a plurality of spraying pipes (15) communicated with the outlet of the self-cleaning filter (14).

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