Kitchen waste treatment equipment

Abstract

The utility model provides kitchen waste treatment equipment which comprises a box-type body, the box-type body comprises a crushing digestion body and a drainage pool which are located on the two sides, and the crushing digestion body comprises a feeding port located at the top end, a crushing device connected with the feeding port and a digestion device below the crushing device. The drain tank comprises a water inlet positioned at the top end, a flushing pump positioned at the bottom, and a flushing pipe connected with the flushing pump and extending to the inlet of the crushing device; and a flushing nozzle is arranged at the end part of the flushing pipe. The flushing pump is arranged in the drain tank, and the flushing nozzle is arranged at the inlet of the crushing device, so that residual kitchen waste during crushing can be flushed, the use of gears of the crushing device is ensured, the humidity of the mixed kitchen waste in the digestion device is ensured, smooth aerobic digestion is facilitated, and the degradation rate is high.

Description

Technical Field

[0001] This utility model relates to the field of solid waste treatment technology, and in particular to a kitchen waste treatment device. Background Technology

[0002] Food waste is an important component of organic waste in urban solid waste. From a chemical composition perspective, food waste is mainly composed of proteins, lipids, starches, cellulose, and inorganic salts. Its physicochemical characteristics can be described by "four highs": high oil content, high organic matter content, high salt content, and high moisture content.

[0003] Currently, food waste treatment technologies both domestically and internationally can be broadly categorized into two types based on the treatment medium: non-biological treatment technologies and biological treatment technologies. Non-biological treatment technologies refer to traditional waste disposal methods such as incineration and sanitary landfill, as well as emerging methods such as mechanical pulverization and direct discharge, dehydration for animal feed production, and vacuum frying for animal feed production. Biological treatment technologies mainly include anaerobic digestion, aerobic composting, and vermicomposting. Each treatment technology has its advantages and disadvantages. In practical applications, factors such as local conditions, economic circumstances, and the characteristics of food waste should be comprehensively considered, and multiple treatment technologies should be used in combination to achieve better treatment results and generate greater economic and environmental benefits.

[0004] Food waste needs to be collected, but more importantly, its volume should be reduced at the source to lower the costs of collection, transportation, and treatment. However, existing food waste treatment equipment is bulky, lacks integration, and cannot meet the needs of space-constrained places such as canteens and restaurants. Furthermore, its processing speed is slow, treatment is incomplete, it easily produces odors, and the treated waste cannot be directly discharged into the municipal sewer system, potentially causing secondary pollution. Utility Model Content

[0005] In view of the above-mentioned shortcomings in the existing technology, the present invention provides a kitchen waste treatment device that can solve the problem of reducing kitchen waste at the source.

[0006] This utility model provides a kitchen waste treatment device, which includes a box-type body. The box-type body includes a crushing and digesting unit and a drainage tank located on both sides. The crushing and digesting unit includes a feed inlet located at the top, a crushing device connected to the feed inlet, and a digesting device below the crushing device. The drainage tank includes a water inlet located at the top, a flushing pump located at the bottom, and a flushing pipe connected to the flushing pump and extending to the inlet of the crushing device. The end of the flushing pipe is provided with a flushing nozzle.

[0007] Furthermore, the rinsing nozzle is a V-shaped fan nozzle, and the spray angle is 30°~60°.

[0008] Furthermore, the flushing nozzle is a stainless steel nozzle and is equipped with an external pipe threaded joint, and the number of flushing nozzles is at least 4.

[0009] Furthermore, the flushing nozzles are arranged around the inlet of the crushing device, and the spray direction can be flexibly adjusted.

[0010] Furthermore, the digestion device has a cavity structure, including a stirrer located in the middle of the cavity and a drain pipe located at the bottom, with the other end of the drain pipe connected to a drainage pool.

[0011] Furthermore, the digestion device cavity is filled with packing material and composite fermentation agent. The packing material is a porous modified material with PE material as the skeleton, and the packing material has through-pores distributed inside.

[0012] Furthermore, the mixer is equipped with stirring blades, and the blades have a rectangular structure.

[0013] Furthermore, the top surface of the box-type body is provided with a drainage pool inspection port cover and the side is provided with a digester inspection port.

[0014] Furthermore, a drain outlet is provided at the bottom of the drainage pool.

[0015] Furthermore, the food waste treatment equipment also includes a control unit located on one side of the drainage pool. The control unit includes a control panel, operation buttons, and internal control components, used to control the start-up, shutdown, and operation of the flushing pump, crushing device, and digestion device.

[0016] The kitchen waste treatment equipment provided by this utility model has a flushing pump installed at the bottom of the drainage tank and a flushing pipe and flushing nozzle at the inlet of the crushing device. This flushes away the kitchen waste remaining during crushing, ensuring the operation of the crushing device gears while maintaining the humidity (60-70%) of the mixed kitchen waste in the digestion device. This is conducive to the smooth progress of aerobic digestion. The kitchen waste reduction rate reaches 80% in 6-8 hours and over 95% in 10-24 hours. The degradation rate is fast, and the kitchen waste is decomposed into a mixed liquid after digestion. The COD of the mixed liquid is controlled below 500mg / L, and other water quality data meet the Class B standard of "GB / T 31962-2015 Water Quality Standard for Wastewater Discharge into Urban Sewerage Systems". It can be directly discharged and connected to the municipal sewer network. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of the kitchen waste treatment equipment provided by this utility model.

[0019] Figure 2 This is an elevation view of the kitchen waste treatment equipment provided by this utility model.

[0020] Figure 3 This is a top view of the kitchen waste treatment equipment provided by this utility model.

[0021] Figure 4 This is a diagram showing the lower layer layout of the kitchen waste treatment equipment provided by this utility model.

[0022] Figure 5 This is a diagram of the upper layer layout of the kitchen waste treatment equipment provided by this utility model.

[0023] Figure 6 This is a schematic diagram of a flushing pipe and a flushing nozzle provided by this utility model.

[0024] Figure 7 This is a schematic diagram of another flushing pipe and flushing nozzle provided by this utility model.

[0025] Figure label:

[0026] In the diagram: 1. Feed inlet; 2. Feed inlet cover; 3. Drainage tank inspection port cover; 4. Crushing device; 5. Mixer; 6. Flushing pipe; 7. Water inlet; 8. Drainage tank; 9. Control components; 10. Flushing pump; 11. Digestion device; 12. Digestion drain pipe; 13. Drain outlet; 14. Control panel; 15. Odor collection port; 16. Crushing and digestion system; 17. Flushing nozzle; 111. Digestion device inspection port. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] Figures 1 to 7This utility model demonstrates a kitchen waste treatment device, comprising: a box-type body, the box-type body including a crushing and digesting unit and a drainage tank 8 located on both sides, the crushing and digesting unit including a feed inlet 1 at the top, a crushing device 4 connected to the feed inlet 1, and a digesting device 11 below the crushing device 4, the drainage tank 8 including a water inlet 7 at the top, a flushing pump 10 at the bottom, and a flushing pipe 6 connected to the flushing pump 10 and extending to the inlet of the crushing device 4, the end of the flushing pipe 6 being provided with a flushing nozzle 17.

[0029] The inlet 7 is connected to a tap water pipe for initial water replenishment and rinsing during crushing. The resulting liquid mixture after digestion is stored in a drainage tank 8 and can also be used to rinse the crushing device 4. Excess water is discharged through the drain outlet 13 at the bottom of the drainage tank 8. The rinsing pump 10 transports the liquid mixture from the drainage tank 8 to the rinsing nozzle 17 via the rinsing pipe 6. The rinsing pipe 6 is a DN25 stainless steel pipe, and its length is configured according to the processing capacity of the food waste treatment equipment.

[0030] A flushing nozzle 17 is installed at the inlet of the crushing device 4 to flush away the kitchen waste remaining during crushing. This ensures the proper functioning of the gears in the crushing device 4 while maintaining the humidity (60-70%) of the mixed kitchen waste in the digestion device 11, which is conducive to the smooth progress of aerobic digestion.

[0031] The flushing nozzle 17 uses a V-shaped stainless steel narrow-angle fan-shaped nozzle with a spray angle of 30°~60°, which can produce a high-impact narrow-angle fan-shaped spray with uniform spray distribution, medium droplet size, and clear spray edge definition. The narrow-angle nozzle is designed as an integral part of the external pipe threaded joint, and the large and smooth channel reduces blockage. The resulting guide plane provides a uniform, high-impact spray shape.

[0032] The number of flushing nozzles 17 can be configured according to the processing capacity of the food waste treatment equipment, but at least 4 nozzles should be set to ensure the flushing effect. For example, when the processing capacity is <200kg / d, the equipment can be equipped with 4 flushing nozzles 17; when the processing capacity is ≥200kg / d, 6 flushing nozzles 17 can be equipped.

[0033] The digestion device 11 has a cavity structure, including a mixer 5 located in the middle of the cavity and a drain pipe 12 located at the bottom. The other end of the drain pipe 12 is connected to a drainage pool 8. After the crushed kitchen waste is stirred and fermented by the mixer 5, it is discharged into the drainage pool 8 through the drain pipe 12.

[0034] The cavity structure can be a steel trough-type device, in which filler and composite fermentation agent are arranged; the filler is a porous modified material with PE material as the skeleton, and the filler has interconnected pores distributed inside; this type of filler is hydrophilic and positively charged, which is conducive to bacterial attachment and growth; the composite fermentation agent is selected from microbial agents, preferably Bacillus thermophilus, Lactobacillus zeatus, Bacillus subtilis and sucralose.

[0035] The crushed food waste is mixed by the connected mixer 5, thoroughly combined with the filler and compound fermentation agent, and combined with oxygen in the air. Through an aerobic digestion reaction at 20-30℃, the organic matter in the food waste is degraded by microorganisms. Large starch molecules are broken down into smaller sugar molecules, proteins into smaller amino acids, lipids into smaller fatty acids, and cellulose into glucose. The final degradation product is a mixed liquid rich in reducing sugars and organic acids. This mixed liquid is then stored in the drainage tank 8 through the digestion drain pipe 12.

[0036] The mixer 5 is equipped with mixing blades, and the blades are designed with a rectangular structure, which is more conducive to the mixing and fermentation of kitchen waste.

[0037] The top surface of the box-type body of the food waste treatment equipment is equipped with a drainage pool inspection port cover 3, and the side is equipped with a digestion device inspection port 111, so as to facilitate the maintenance of the drainage pool 8 and the digestion device 11.

[0038] The food waste treatment equipment also includes a control unit 9 located on one side of the drainage tank 8. The control unit includes a control panel 14, operation buttons and internal components, which are used to control the start and stop and operation of the flushing pump 10, the crushing device 4 and the digestion device 11, thereby ensuring the automatic operation of the entire set of equipment.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A kitchen waste treatment apparatus, characterized by, Including box body, the box body includes broken digestion body and drainage tank on both sides, the broken digestion body includes feed inlet at the top, crushing device connected to the feed inlet and digestion device below the crushing device, the drainage tank includes water inlet at the top, flushing pump at the bottom, flushing pipe connected to the flushing pump extending to the inlet of the crushing device, the end of the flushing pipe is provided with flushing nozzle; The flushing nozzle is V-shaped fan-shaped nozzle, and the washing angle is 30°-60°; The flushing nozzle is a stainless steel nozzle, which is provided with an outer pipe threaded joint, and the number of the flushing nozzles is at least 4; The flushing nozzles are arranged around the periphery of the inlet of the crushing device, and the jet direction is flexibly adjusted. The digestion device is a cavity structure, fillers and composite fermentation inoculants are arranged in the cavity of the digestion device, the fillers are porous modified materials with PE material as the skeleton, and the fillers are internally distributed with through pores.

2. The kitchen waste treatment apparatus according to claim 1, characterized in that, The digestion device includes a stirrer in the middle of the cavity and a drain pipe at the bottom, the other end of the drain pipe is connected to the drainage tank.

3. The kitchen waste treatment device according to claim 2, characterized in that, The stirrer is provided with stirring blades, and the blades are rectangular structures.

4. The kitchen waste treatment apparatus according to claim 1, characterized in that, The top surface of the box body is provided with a drainage tank access cover and a side digestion device access cover.

5. The kitchen waste treatment apparatus according to claim 1, characterized in that, The bottom of the drainage tank is provided with a drainage port.

6. The kitchen waste treatment apparatus according to claim 1, characterized in that, It also includes a control member on one side of the drainage tank, the control member includes a control panel, an operation button and internal control components, for controlling the start and stop of the flushing pump, the crushing device and the digestion device and operation.

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