Organic wet kitchen waste pulping mechanism

Abstract

The utility model discloses a kitchen waste organic wet garbage pulping mechanism which comprises a material receiving bin, and a first double-shaft spiral conveyor is arranged at the bottom of the material receiving bin; the draining tank is connected to the receiving bin; the magnetic separator is positioned at the downstream of the receiving bin; the first double-shaft spiral conveyor is used for conveying materials in the material receiving bin to the magnetic separator; the coarse crusher is located at the downstream of the magnetic separator, and the processing capacity of the coarse crusher is larger than or equal to the output quantity of the first double-shaft spiral conveyor; the pulping machine is positioned at the downstream of the coarse crusher and is provided with a rotary chain unit; the spiral chain unit enables the slurry particle size to be less than or equal to 8mm and the slurry organic matter to be greater than or equal to 80%; and the separator is positioned at the downstream of the pulping machine and is provided with a filter sieve bed for removing large solid wastes in products of the pulping machine, and the filtering distance of the filter sieve bed is 8-15mm. The kitchen waste organic wet garbage pulping mechanism provided by the specification can crush organic garbage with larger volume in kitchen waste and kitchen waste and pulp, so that the pulp is convenient for subsequent treatment.

Description

Technical Field

[0001] This specification relates to the field of waste treatment technology, and in particular to a pulping mechanism for organic wet waste from kitchen waste. Background Technology

[0002] The organic wet waste such as kitchen waste and food scraps collected by urban sanitation systems are complex due to significant differences in regional climate, seasonal characteristics, living habits, dietary habits, and the degree of waste classification management, which makes the treatment quite difficult.

[0003] Due to the complexity of the materials, organic wet waste such as kitchen waste and food scraps may contain plastics and foams, cloth, bamboo and wood, paper, metals, glass, slag, and other debris. These components are harmful to the system's processing equipment and pipeline valves and should be removed during the resource recovery treatment of organic wet waste such as kitchen waste and food scraps. In addition, the particle size of organic wet waste such as kitchen waste and food scraps is also extremely uneven, making it difficult to carry out subsequent anaerobic fermentation treatment for resource recovery. Utility Model Content

[0004] In view of the shortcomings of the prior art, one object of this specification is to provide a pulping device for kitchen waste organic wet waste, which can crush the larger organic waste in kitchen waste and pulp it, so that the pulp is easy to process later.

[0005] To achieve the above objectives, this specification provides a pulping mechanism for organic wet waste from kitchen waste, comprising:

[0006] A receiving bin, the bottom of which is equipped with a first dual-shaft screw conveyor;

[0007] A drain tank connected to the receiving hopper is used to store the drain water generated by the receiving hopper;

[0008] A magnetic separator located downstream of the receiving hopper is used to remove iron from the material; the first twin-shaft screw conveyor is used to transport the material in the receiving hopper to the magnetic separator;

[0009] A coarse crusher located downstream of the magnetic separator has a processing capacity greater than or equal to the output of the first twin-shaft screw conveyor.

[0010] A pulping machine located downstream of the coarse crusher is equipped with a swirl unit that acts on the material; the swirl unit ensures that the slurry particle size is less than or equal to 8 mm and the organic matter content of the slurry is greater than or equal to 80%.

[0011] A separator located downstream of the pulper is provided with a filter screen bed for removing large solid waste and solid particles from the pulper product. The filter screen bed has a filter spacing of 8mm to 15mm.

[0012] In a preferred embodiment, a sealing hydraulic cover is provided on the top of the receiving hopper. The sealing hydraulic cover is connected to a hydraulic cylinder, which is used to drive the sealing hydraulic cover to open or close. The inner side of the sealing hydraulic cover is made of stainless steel, and the outer side is made of carbon steel anti-corrosion material.

[0013] In a preferred embodiment, the frame of the receiving hopper is made of Q235 steel, and the part of the receiving hopper that comes into contact with the material is made of SS304 stainless steel; a splash guard is provided at the entrance of the receiving hopper.

[0014] In a preferred embodiment, the magnetic separator is equipped with a permanent magnet and a scraper. The permanent magnet is used to absorb iron from the material, and the scraper is used to scrape off impurities from the permanent magnet. The magnetic induction intensity of the magnetic separator is at least 90MT.

[0015] In a preferred embodiment, the coarse crusher includes two rotating shafts rotating in opposite directions, and the rotating shafts are equipped with blades for crushing materials to a particle size of less than 60 mm.

[0016] In a preferred embodiment, the frame of the coarse crusher is made of Q235 steel, and the cutter head of the coarse crusher is made of alloy steel.

[0017] In a preferred embodiment, the drain tank is a concrete tank; the drain tank is equipped with a stirrer, a level gauge and a drain conveying pump, and the drain conveying pump is a spiral vane pump.

[0018] In a preferred embodiment, the pulper includes a feeding hopper and a grinding chamber. The inlet of the feeding hopper is connected to the outlet of the coarse crusher. A second double-shaft screw conveyor is provided at the bottom of the feeding hopper for conveying the material in the feeding hopper to the grinding chamber. The spinning chain unit is disposed in the grinding chamber.

[0019] In a preferred embodiment, the grinding chamber adopts an integrated design, and the flow material is SS304 stainless steel; the separator adopts a fully enclosed design, and the separator is equipped with a deodorization port.

[0020] In a preferred embodiment, the filter screen bed includes multiple rubber turntables installed side by side, the rubber turntables being driven by chains driven by variable frequency speed-adjustable motors, and the processing capacity of the filter screen bed is greater than or equal to 30m³. 3 / h.

[0021] Beneficial effects

[0022] The food waste and organic wet waste pulping mechanism provided in this embodiment features a simple structure and high efficiency, consisting of a receiving hopper, a drain tank, a magnetic separator, a coarse crusher, a pulping machine, and a separator. It can crush larger organic waste from food waste and pulp it, facilitating subsequent processing. The first dual-shaft screw conveyor at the bottom of the receiving hopper improves conveying efficiency, thereby enhancing the overall operating efficiency of the mechanism. The coarse crusher's processing capacity is greater than or equal to the output of the first dual-shaft screw conveyor, ensuring smooth and unblocked operation. The pulping machine's rotating chain unit ensures a slurry particle size of 8mm or less and an organic matter content of 80% or more, facilitating subsequent processing. The separator's filter screen has a filtration spacing of 8mm to 15mm, efficiently separating impurities from the material.

[0023] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the scope of the embodiments of the present invention is not limited thereto.

[0024] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0025] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, or components. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a pulping mechanism for organic wet waste from kitchen waste provided in this embodiment.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Feeding bin; 11. First twin-shaft screw conveyor; 2. Drainage tank; 21. Agitator; 22. Level gauge; 23. Drainage pump; 3. Magnetic separator; 4. Coarse crusher; 41. Rotating shaft; 42. First motor; 5. Pulping machine; 51. Feed hopper; 511. Second twin-shaft screw conveyor; 512. Second motor; 52. Grinding chamber; 521. First electric flushing valve; 522. Second electric flushing valve; 6. Separator. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments 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, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0031] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or may be interposed with another element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or may be interposed with another element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] Please see Figure 1 This application provides a pulping machine for organic wet waste such as kitchen waste and food scraps, comprising a receiving bin 1, a drain tank 2, a magnetic separator 3, a coarse crusher 4, a pulping machine 5, and a separator 6.

[0034] The receiving hopper 1 is equipped with a first twin-shaft screw conveyor 11 at its bottom. A drain tank 2 is connected to the receiving hopper 1 and stores the drain water generated by the receiving hopper 1. A magnetic separator 3 is located downstream of the receiving hopper 1 and is used to remove iron from the material. The first twin-shaft screw conveyor 11 transports the material from the receiving hopper 1 to the magnetic separator 3. A coarse crusher 4 is located downstream of the magnetic separator 3. The processing capacity of the coarse crusher 4 is greater than or equal to the output of the first twin-shaft screw conveyor 11. A pulping machine 5 is located downstream of the coarse crusher 4 and is equipped with a rotating chain unit that acts on the material. The rotating chain unit ensures that the slurry particle size is less than or equal to 8 mm and the organic matter content of the slurry is greater than or equal to 80%. A separator 6 is located downstream of the pulping machine 5 and is equipped with a filter screen bed for removing large solid waste and solid particles from the product of the pulping machine 5. The filter screen bed has a filter spacing of 8 mm to 15 mm.

[0035] The organic wet waste pulping machine 5 provided in this embodiment, consisting of a receiving hopper 1, a drain tank 2, a magnetic separator 3, a coarse crusher 4, a pulping machine 5, and a separator 6, has a simple structure and high efficiency. It can crush larger organic waste from kitchen and food waste and pulp it, making the pulp easier for subsequent processing. The first dual-shaft screw conveyor 11 at the bottom of the receiving hopper 1 improves conveying efficiency, thereby improving the overall operating efficiency of the mechanism. The processing capacity of the coarse crusher 4 is greater than or equal to the output of the first dual-shaft screw conveyor 11, ensuring smooth and unblocked operation of the mechanism. The spinning chain unit of the pulping machine 5 can make the slurry particle size less than or equal to 8mm and the organic matter content of the slurry greater than or equal to 80%, making the slurry easier for subsequent processing. The filter screen of the separator 6 has a filter spacing of 8mm to 15mm, which can efficiently separate impurities from the material.

[0036] In this embodiment, a sealing hydraulic cover (not shown) is provided on the top of the receiving bin 1. The sealing hydraulic cover is connected to a hydraulic cylinder, which is used to drive the sealing hydraulic cover to open or close. The inner side of the sealing hydraulic cover is made of stainless steel, and the outer side is made of carbon steel corrosion-resistant material. When unloading stops, the sealing hydraulic cover can be closed by the hydraulic cylinder to prevent the spread of odor. The entire mechanism can be configured with a hydraulic system, which includes multiple hydraulic cylinders. Each receiving bin 1 can be equipped with two sets of hydraulic cylinders to supply the sealing hydraulic cover.

[0037] There can be one or more receiving hoppers 1, used for receiving large-capacity incoming materials, storing daily incoming wet waste to meet the peak receiving and transportation needs. After the wet waste is transported to the treatment plant, it enters the workshop for unloading. The collection truck unloads both solid and liquid waste into the receiving hopper 1. When the first dual-shaft screw conveyor 11 at the bottom of the receiving hopper 1 encounters material jamming, it can automatically reverse and trigger an alarm, enabling the receiving hopper 1 to operate independently.

[0038] Specifically, the frame of the receiving bin 1 is made of Q235 steel, and the part of the receiving bin 1 that comes into contact with the material is made of SS304 stainless steel, which has strong corrosion resistance. A splash guard is installed at the entrance of the receiving bin 1 to prevent kitchen waste and leachate from splashing and seeping down.

[0039] In this embodiment, to prevent ferrous metals from the wet waste from entering subsequent processes and damaging the facilities, a magnetic separator 3 is installed before the material enters the coarse crusher 4. The magnetic separator 3 is equipped with permanent magnets and scrapers. The permanent magnets use high-performance permanent magnet cores to attract ferrous impurities mixed in the material. The scrapers continuously scrape off the impurities adsorbed on the permanent magnets, thereby achieving automatic iron removal. The magnetic induction intensity of the magnetic separator 3 is at least 90 MT. The magnetic separator 3 also includes a geared motor, frame, rollers, etc., with the permanent magnets located above the conveyor belt.

[0040] like Figure 1 As shown, the coarse crusher 4 includes two rotating shafts 41 rotating in opposite directions. Each rotating shaft 41 is connected to a first motor 42, which drives the rotating shaft 41 to rotate. Blades are mounted on each rotating shaft 41 to crush materials to a particle size of less than 60mm. The coarse crusher 4 mainly utilizes the shearing and tearing methods generated by the two rotating shafts 41 to crush materials. During operation, the two rotating shafts 41 rotate inwards. After falling in, the material is captured by the blades mounted on the rotating shafts 41, causing the material to move downwards and be crushed simultaneously. The crushed material then falls from the discharge port below, resulting in a particle size of less than 60mm.

[0041] Specifically, the frame of the coarse crusher 4 is made of Q235 steel, and the cutter head of the coarse crusher 4 is made of alloy steel. When a large number of foreign objects cause the coarse crusher 4 to stall and become difficult to rotate, the control system connected to the coarse crusher 4 will immediately sense this and control the two rotating shafts 41 to move in the opposite direction to the working direction to release the foreign objects, so as to avoid accidents such as blade damage, shaft breakage, or motor damage.

[0042] In this embodiment, the drain tank 2 is a concrete tank. The drain tank 2 is equipped with a stirrer 21, a level gauge 22, and a drain transfer pump 23, which is a spiral vane pump. The drain transfer pump 23 is dry-installed, and the pipeline design avoids dead angles and considers sampling ports and a rinsing system. The outlet of the drain tank 2 is connected to the subsequent slurry preparation system.

[0043] like Figure 1As shown, the pulping machine 5 includes a feeding hopper 51 and a grinding chamber 52. The inlet of the feeding hopper 51 is connected to the outlet of the coarse crusher 4. A second twin-shaft screw conveyor 511 is provided at the bottom of the feeding hopper 51 for conveying the material in the feeding hopper 51 to the grinding chamber 52. The second twin-shaft screw conveyor 511 is connected to a second motor 512, which drives the second twin-shaft screw conveyor 511 to work.

[0044] The rotating chain unit is disposed within the grinding chamber 52. The grinding chamber 52 can be configured as a cylindrical vertical structure. Within the grinding chamber 52, the high-speed rotating chain unit with hammers impacts and accelerates the tumbling of the input material. Under the high-speed hammering mechanical impact, the mixture of input materials is decomposed, thereby enabling efficient pulping of organic matter and other raw materials from kitchen waste. Soft inorganic materials such as plastic bags or bottles in the raw materials are only broken or deformed, and are retained as intact as possible for easier definitional separation in downstream processes. The residence time of the material determines the shape and size of the output material.

[0045] Preferably, the pulper 5 is corrosion-resistant as a whole, and the grinding chamber 52 adopts an integrated design with the flow passage material being SS304 stainless steel. For continuous operation, considering the intermittent feeding requirements of the pulper 5, a necessary buffer silo can be configured between the coarse crusher 4 and the pulper 5, or the conveying capacity of the conveying equipment can be increased.

[0046] Specifically, the grinding chamber 52 can also be connected to a first electric flushing valve 521 and a second electric flushing valve 522, with the first electric flushing valve 521 located above the second electric flushing valve 522. The first electric flushing valve 521 is used to pump water to flush the inner wall of the grinding chamber 52. The second electric flushing valve 522 is used to pump water to flush the outlet of the grinding chamber 52, preventing the outlet from becoming blocked.

[0047] In this embodiment, the filter screen bed includes multiple rubber turntables installed side by side. These turntables are driven by chains driven by variable frequency speed-adjustable motors. The processing capacity of the filter screen bed is greater than or equal to 30m³. 3 / h.

[0048] After being crushed and pulped, the wet waste enters separator 6. Separator 6 preferably employs a disc filter to remove large pieces of solid waste and solid particles from the incoming material. Separator 6 adopts an integrated design, is corrosion-resistant throughout, and key components such as the main shaft are made of corrosion-resistant materials or treated with anti-corrosion materials. Separator 6 can effectively sort coarse materials (such as glass bottles, plates, dishes, plastics, and other debris), ensuring that brittle debris does not break during the sorting process (minimizing wear and tear on subsequent equipment and reducing processing difficulty). It has a high debris removal rate, produces clean separated debris, and has a high organic matter recovery rate. Separator 6 operates in a fully enclosed mechanized manner and is equipped with a deodorization port to prevent secondary pollution.

[0049] In this embodiment, the pulper 5 can efficiently pulp organic matter in kitchen waste and other organic waste. After the pulp is separated by the separator 6 to remove larger impurities, it enters the subsequent sedimentation tank, making the pulp easier for subsequent processing.

[0050] It should be noted that in the description of this specification, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this specification, unless otherwise stated, "a plurality of" means two or more.

[0051] Any numerical values ​​cited herein include all values ​​ranging from a lower limit to an upper limit, increasing by one unit, with at least two units between any lower and any higher value. For example, if the quantity of a component or the value of a process variable (e.g., temperature, pressure, time, etc.) is described as being from 1 to 90, preferably from 20 to 80, more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in this specification. For values ​​less than 1, a unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1, etc. These are merely examples intended for explicit expression, and it can be assumed that all possible combinations of values ​​listed between the minimum and maximum values ​​are explicitly described in this specification in a similar manner.

[0052] Unless otherwise stated, all ranges include the endpoints and all numbers between them. The terms "approximately" or "about" used with ranges apply to both endpoints of the range. Thus, "approximately 20 to 30" is intended to cover "approximately 20 to approximately 30," including at least the specified endpoints.

[0053] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified elements, components, parts, or steps, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute included by “may” is optional.

[0054] Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The use of the word "a" or "an" to describe an element, component, part, or step does not imply the exclusion of other elements, components, parts, or steps.

[0055] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this teaching should not be determined by reference to the above description, but rather by reference to the appended claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the inventors have not considered that subject matter as part of the disclosed utility model subject matter.

Claims

1. A pulping mechanism for organic wet waste from kitchen waste, characterized in that, include: A receiving bin, the bottom of which is equipped with a first dual-shaft screw conveyor; A drain tank connected to the receiving hopper is used to store the drain water generated by the receiving hopper; A magnetic separator located downstream of the receiving hopper is used to remove iron from the material; the first twin-shaft screw conveyor is used to transport the material in the receiving hopper to the magnetic separator; A coarse crusher located downstream of the magnetic separator has a processing capacity greater than or equal to the output of the first twin-shaft screw conveyor. A pulping machine located downstream of the coarse crusher is equipped with a swirl unit that acts on the material; the swirl unit ensures that the slurry particle size is less than or equal to 8 mm and the organic matter content of the slurry is greater than or equal to 80%. A separator located downstream of the pulper is provided with a filter screen bed for removing large solid waste and solid particles from the pulper product. The filter screen bed has a filter spacing of 8mm to 15mm.

2. The food waste organic wet waste pulping mechanism according to claim 1, characterized in that, The top of the receiving hopper is equipped with a sealing hydraulic cover plate, which is connected to a hydraulic cylinder. The hydraulic cylinder is used to drive the sealing hydraulic cover plate to open or close. The inner side of the sealing hydraulic cover plate is made of stainless steel, and the outer side is made of carbon steel anti-corrosion material.

3. The food waste organic wet waste pulping mechanism according to claim 2, characterized in that, The frame of the receiving hopper is made of Q235 steel, and the part of the receiving hopper that comes into contact with the material is made of SS304 stainless steel; a splash guard is provided at the entrance of the receiving hopper.

4. The food waste organic wet waste pulping mechanism according to claim 1, characterized in that, The magnetic separator is equipped with a permanent magnet and a scraper. The permanent magnet is used to absorb iron from the material, and the scraper is used to scrape off impurities from the permanent magnet. The magnetic induction intensity of the magnetic separator is at least 90MT.

5. The food waste organic wet waste pulping mechanism according to claim 1, characterized in that, The coarse crusher includes two rotating shafts rotating in opposite directions, and blades are provided on the rotating shafts to crush materials to a particle size of less than 60mm.

6. The food waste organic wet waste pulping device according to claim 5, characterized in that, The frame of the coarse crusher is made of Q235 steel, and the cutter head of the coarse crusher is made of alloy steel.

7. The food waste organic wet waste pulping device according to claim 1, characterized in that, The drain pool is a concrete pool; the drain pool is equipped with a stirrer, a level gauge and a drain conveying pump, and the drain conveying pump is a spiral vane pump.

8. The food waste organic wet waste pulping device according to claim 1, characterized in that, The pulper includes a feeding hopper and a grinding chamber. The inlet of the feeding hopper is connected to the outlet of the coarse crusher. A second double-shaft screw conveyor is provided at the bottom of the feeding hopper to transport the material in the feeding hopper to the grinding chamber. The spinning chain unit is located in the grinding chamber.

9. The food waste organic wet waste pulping device according to claim 8, characterized in that, The grinding chamber adopts an integrated design, and the flow material is SS304 stainless steel; the separator adopts a fully enclosed design and is equipped with a deodorization port.

10. The food waste organic wet waste pulping device according to claim 1, characterized in that, The filter screen bed includes multiple rubber turntables installed side by side. These turntables are driven by chains driven by variable frequency speed-adjustable motors. The processing capacity of the filter screen bed is greater than or equal to 30m³. 3 / h.

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