Rotor suitable for efficient crushing of kitchen waste and hydraulic pulping machine

Abstract

The utility model discloses a rotor suitable for efficiently crushing kitchen waste, which comprises a rotor base, a transmission shaft is mounted in the center of the rotor base, the rotor base is attached to a sieve plate through the transmission shaft, a plurality of guide vanes are arranged above the rotor base, and the guide vanes are arranged on the rotor base. A plurality of wing-shaped blades are arranged on the periphery of the rotor base, and the wing-shaped blades are annularly arranged around the transmission shaft and the rotor base; through the optimized and improved design of the product, the motor drives the transmission shaft to drive the guide vanes and the wing-shaped vanes to rotate at a high speed, the high-speed rotation of the guide vanes forms violent turbulent circulation and mutual wriggling of pulp flow layers at different speeds in the pulping machine, and the tearing of the wing-shaped vanes generates an acting force on the pulp, so that the pulp can be fully stirred. In addition, the rotor further has the functions of preventing long and thin fiber substances from sticking and winding on a shaft, automatically cleaning the sieve plate and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of organic waste treatment, in particular to a rotor and a hydraulic pulping machine suitable for efficiently crushing restaurant kitchen waste. Background Art

[0002] According to statistics, the amount of food waste generated nationwide exceeded 150 million tons in 2022. With improved waste sorting, the amount of food waste produced in my country is rapidly increasing, placing significant pressure on urban ecological environments. If not properly disposed of, it will severely impact the surrounding ecosystem, causing severe ecological problems such as the spread of disease and pests. Food waste is typically highly biodegradable, high in organic matter and oil, making it a highly economically valuable renewable resource. Effectively utilizing this biomass energy source is crucial for achieving sustainable environmental and economic development.

[0003] The anaerobic digestion process for treating food waste has a high degree of harmlessness, overcomes the influence of "homology", and the product is biogas with a high degree of utilization, which has a high energy-saving and emission reduction effect.

[0004] However, due to the complex composition and high content of impurities in food waste, pretreatment is required before anaerobic digestion. This involves producing a slurry with a high organic content and separating impurities such as metals, sand, gravel, plastics, ceramics, wood, bamboo, and fabric. my country's waste sorting system is relatively new, and mature food waste pretreatment technologies are limited. Current technologies, adapted from existing household waste sorting processes, result in low organic matter recovery rates, high residue yields, and significant equipment clogging and wear. Therefore, effective food waste pretreatment is crucial to the stable operation of this treatment process. Utility Model Content

[0005] In response to the above technical problems in the related art, the present invention proposes a rotor and a hydraulic pulping machine suitable for efficient crushing of food waste, which can overcome the above shortcomings of the prior art.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0007] In the first aspect, the present invention provides a rotor suitable for efficiently crushing food waste;

[0008] The rotor suitable for efficiently crushing food waste includes a rotor base, a transmission shaft is installed at the center of the rotor base, the rotor base is fitted on the screen plate through the transmission shaft, a plurality of guide vanes are provided above the rotor base, and a plurality of airfoil blades are provided around the periphery of the rotor base, and the airfoil blades are arranged in a ring around the transmission shaft and the rotor base.

[0009] Furthermore, the sieve plate is integrally die-cast, the thickness of the sieve plate is 10 to 20 mm, the sieve plate is fixed to the bottom of the pulping machine by bolts, and the lower part of the sieve plate is connected to a pulp discharge port.

[0010] Furthermore, the sieve plate is provided with a plurality of tapered holes, the upper aperture of the tapered hole is 8 mm, and the lower aperture of the tapered hole is 6 mm.

[0011] Furthermore, the guide blades are three-leaf guide blades and are arranged in a spiral shape. A longitudinal height difference is formed between the starting end and the tail end of each three-leaf guide blade. When the guide blades rotate at high speed, violent turbulent circulation and mutual creep between pulp flow layers of different speeds can be formed in the pulping machine.

[0012] Furthermore, the airfoil blades are arranged in a six-leaf ring, and the front end of the airfoil blades is configured as a serrated or sharp blade structure. When the airfoil blades rotate at high speed, they can exert a strong cutting and tearing force on the food waste.

[0013] Furthermore, the airfoil blade has an airfoil cross-section, an angle of attack of 5 to 10° between the center line of the airfoil blade and the screen plate, and a distance between the lower edge of the airfoil blade and the screen plate is 2 to 5 mm; when the airfoil blade rotates at high speed, it can exert a downward force on the slurry when passing through, pushing the slurry downward through the screen plate.

[0014] Furthermore, the guide vanes, the airfoil blades and the rotor base are integrally cast using high-strength stainless steel material, and the surfaces of the guide vanes, the airfoil blades and the rotor base are all welded with wear-resistant tungsten carbide.

[0015] In the second aspect, the utility model provides a hydraulic pulping machine;

[0016] The hydraulic pulping machine comprises the above-mentioned rotor, a hydraulic pulping machine tank body, a feed port, a pulp discharge port, a slag discharge port, a main shaft, and a pulley.

[0017] Furthermore, the rotor is arranged at the center position of the bottom inner part of the hydraulic pulping machine tank, and is connected to the pulley through the main shaft to form a transmission assembly, and is then connected to the drive motor through a belt; the feed port is located at the top of the hydraulic pulping machine tank; the pulp discharge port is located at the bottom of the hydraulic pulping machine tank and below the screen plate of the rotor; the slag discharge port is located at the lower side of the hydraulic pulping machine tank.

[0018] Furthermore, the rotor is connected to the bearing, main shaft, bearing seat, pulley, and drive motor through a transmission shaft to form a transmission assembly; the rotor is driven by the drive motor and the pulley, the drive motor is variable frequency operated, the transmission ratio of the belt is generally 2.5 to 3, the operating speed of the rotor is 150 to 300 r / min, and the working torque of the rotor is ≥5000 N∙m.

[0019] The beneficial effects of the present invention are as follows: through the optimized and improved design of the product of the present invention, the motor drives the transmission shaft to drive the guide blades and the airfoil blades to rotate at high speed. The high-speed rotation of the guide blades forms a violent turbulent circulation and the mutual peristalsis of pulp flow layers of different speeds in the pulping machine. In addition, the tearing of the airfoil blades and the force generated on the pulp liquid achieve the efficient crushing and separation of food waste. The rotor also has the functions of preventing slender fiber materials from wrapping around the shaft and the self-cleaning of the screen plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a longitudinal elevational schematic diagram of a rotor suitable for efficient shredding of food waste according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic plan view of a rotor suitable for efficient crushing of food waste according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the operating principle of the airfoil blades of a rotor suitable for efficient crushing of food waste according to an embodiment of the present utility model;

[0024] Figure 4 This is a structural diagram of a hydraulic pulping machine according to an embodiment of the present utility model;

[0025] In the figure: 1. Hydraulic pulping machine tank; 2. Feed inlet; 3. Slurry discharge outlet; 4. Slag discharge outlet; 5. Rotor; 6. Main shaft; 7. Pulley; 501. Screen plate; 502. Drive shaft; 503. Rotor base; 504. Guide vane; 505. Airfoil blade. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0027] It should be understood that in the description of the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the embodiments of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0028] like Figure 1-4 As shown, a rotor suitable for efficient crushing of food waste according to an embodiment of the present invention includes a rotor base 503, a transmission shaft 502 is installed at the center of the rotor base 503, and the rotor base 503 is fitted on the screen plate 501 through the transmission shaft 502. A plurality of guide blades 504 are provided above the rotor base 503, and a plurality of airfoil blades 505 are provided around the periphery of the rotor base 503. The airfoil blades 505 are arranged in a ring around the transmission shaft 502 and the rotor base 503.

[0029] According to an embodiment of the present invention, a rotor suitable for efficient crushing of food waste is described. In a specific embodiment, the sieve plate 501 is integrally die-cast, the thickness of the sieve plate 501 is 10 to 20 mm, and the sieve plate 501 is fixed to the bottom of the pulping machine by bolts. The lower part of the sieve plate 501 is connected to a pulp discharge port.

[0030] According to an embodiment of the present invention, a rotor suitable for efficient crushing of food waste is provided. In a specific embodiment, the sieve plate 501 is provided with a plurality of conical holes, the upper aperture of the conical holes is 8 mm, and the lower aperture of the conical holes is 6 mm.

[0031] According to an embodiment of the present invention, a rotor suitable for efficient crushing of food waste is described. In a specific embodiment, the guide blades 504 are three-leaf guide blades and are arranged in a spiral shape. A longitudinal height difference is formed between the starting end and the tail end of each three-leaf guide blade. When the guide blades 504 rotate at high speed, violent turbulent circulation and mutual peristalsis between pulp flow layers of different speeds can be formed in the pulping machine, generating strong hydraulic kneading and friction effects, thereby realizing the hydraulic pulping and impurity separation functions of food waste.

[0032] According to an embodiment of the present invention, a rotor suitable for efficient crushing of food waste is described. In a specific embodiment, the airfoil blades 505 are arranged in a six-leaf ring, and the front end of the airfoil blades 505 is configured as a serrated or sharp blade structure. When the airfoil blades 505 rotate at high speed, they can exert a strong cutting and tearing force on the food waste, thereby producing a cutting effect on the food waste. The invention is applied to the pretreatment of food waste with good garbage classification, low impurity content and high moisture content, thereby realizing the efficient crushing function of the food waste.

[0033] According to an embodiment of the present invention, a rotor suitable for efficient crushing of food waste is described. In a specific embodiment, the airfoil blade 505 is an airfoil section, and the center line of the airfoil blade 505 forms an angle of attack of 5 to 10 degrees with the sieve plate 501. The distance between the lower edge of the airfoil blade 505 and the sieve plate 501 is 2 to 5 mm. When the airfoil blade 505 rotates at a high speed, it can generate a downward force on the slurry when passing through, pushing the slurry downward to pass through the sieve plate 501. After the airfoil blade 505 passes, the slurry under the sieve plate is pushed upward to pass through the sieve plate 501 under the action of the pressure difference formed by the different flow rates, thereby realizing the self-cleaning function of the sieve plate.

[0034] According to an embodiment of the present invention, a rotor suitable for efficient crushing of food waste is described. In a specific embodiment, the guide blades 504, the airfoil blades 505 and the rotor base 503 are integrally cast and formed using high-strength stainless steel material. The guide blades, airfoil blades and the base are integrally cast and formed. The surfaces of the guide blades 504, the airfoil blades 505 and the rotor base 503 are all welded with wear-resistant tungsten carbide. The guide blades 504, the airfoil blades 505 and the rotor base 503 can withstand greater forces and friction and are not easily deformed or worn.

[0035] A hydraulic pulping machine according to an embodiment of the present invention includes the above-mentioned rotor 5 and a hydraulic pulping machine tank body 1, a feed port 2, a pulp discharge port 3, a slag discharge port 4, a main shaft 6, and a pulley 7.

[0036] According to a hydraulic pulping machine described in an embodiment of the present invention, in a specific embodiment, the rotor 5 is arranged at the bottom center position of the hydraulic pulping machine tank body 1, and is connected to the pulley 7 through the main shaft 6 to form a transmission assembly, and is then connected to the drive motor through a belt; the feed port 2 is located at the top of the hydraulic pulping machine tank body 1; the pulp discharge port 3 is located at the bottom of the hydraulic pulping machine tank body 1, and is located below the screen plate 501 of the rotor 5; the slag discharge port 4 is located at the lower side of the hydraulic pulping machine tank body 1.

[0037] According to a hydraulic pulping machine described in an embodiment of the present invention, in a specific embodiment, the rotor 5 is connected to the bearing, main shaft, bearing seat, pulley, and drive motor through a transmission shaft 502 to form a transmission assembly; the rotor 5 is driven by the drive motor and the pulley, the drive motor is variable frequency operated, the transmission ratio of the belt is generally 2.5 to 3, the operating speed of the rotor 5 is 150 to 300 r / min, and the working torque of the rotor 5 is ≥5000 N∙m.

[0038] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0039] The present invention provides a rotor suitable for efficient food waste shredding, comprising a sieve plate 501, a drive shaft 502, a rotor base 503, guide vanes 504, and airfoil blades 505. The guide vanes 504 and airfoil blades 505 are integrally cast with the rotor base 503. The guide vanes 504 are arranged on the rotor base 503 in a three-lobed spiral pattern, while the airfoil blades 505 are arranged around the rotor base 503 in a six-lobed annular pattern. A drive shaft 502 is mounted in the center of the rotor base 503, which is then attached to the sieve plate 501 via the drive shaft 502.

[0040] refer to Figure 3-Figure 4 The hydraulic pulping machine of the present invention comprises a hydraulic pulping machine tank 1, a feed port 2, a pulp discharge port 3, a slag discharge port 4, a rotor 5, a main shaft 6, and a pulley 7. The rotor 5 is mounted at the bottom center of the pulping machine tank 1 and is connected to the pulley 7 via the main shaft 6 to form a transmission assembly, which is then connected to the drive motor via a belt. The feed port 2 is located at the top of the pulping machine tank 1; the pulp discharge port 3 is located at the bottom of the pulping machine tank 1, below the screen plate 501 of the rotor 5; and the slag discharge port 4 is located on the lower side of the pulping machine tank 1.

[0041] During specific use, food waste is fed into the pulping machine tank 1 through the feed port 2. The pulley 7 starts to rotate under the drive of the motor, and the pulley 7 drives the main shaft 6 and the rotor 5 to rotate. The components in the food waste can be separated with high precision in a short time. Finally, the impurities and organic slurry are output separately through screening. A screen plate 501 is provided below the rotor 5, and a pulp discharge port 3 is provided at the bottom of the pulping machine tank 1. After the decomposition is completed, the good pulp that meets the requirements is pushed downward by the rotating airfoil blades 505 to pass through the screen plate 501, accelerating the pulp discharge process. The pulp is then pumped out by the pulp pump and sent to the cooking and oil extraction system. The soft and rigid impurities intercepted by the screen plate 501 are pushed outward from the center by the guide vanes 504 to form centrifugal force, and are discharged through the slag discharge port 4. The residue produced after squeezing and dehydration is transported out.

[0042] In some embodiments, the guide vanes 504 are arranged in a three-lobed spiral. When the guide vanes 504 rotate at high speed, the food waste in the pulping machine tank 1 is sucked in along the center of the axis and ejected at high speed from the circumference, forming a violent turbulent circulation. This creates a peristaltic movement of different velocity slurry layers within the tank, generating a significant friction effect, which strongly decomposes and separates the fibers of the food waste in its wet state. The hydraulic impact and hydraulic shear generated by the guide vanes 504, as well as the kneading, friction, decomposition, and separation between the different velocity slurry layers, achieve efficient crushing and separation of the food waste.

[0043] In some embodiments, the airfoil blades 505 are arranged in a six-blade ring. The serrated structure at the front of the blades creates a strong tearing action on the food waste during high-speed rotation, achieving efficient shredding of the food waste and preventing entanglement of slender fibers. The airfoil blades 505 have an airfoil-shaped cross-section, with an angle of attack of 5-10° between the centerline of the airfoil blades 505 and the sieve plate. The distance between the lower edge of the airfoil blades 505 and the sieve plate 501 is 2-5 mm. When the airfoil blades 505 rotate at high speed, they exert a downward force on the slurry as they pass through the sieve plate 501, pushing it downward. After the airfoil blades 505 pass, the pressure differential created by the different flow rates pushes the slurry upward through the sieve plate, thus achieving a self-cleaning function for the sieve plate 501. During this process, the fiber bundles rub against each other in the gap between the rotor 5 and the sieve plate 501, increasing shredding and fiberization and ensuring self-cleaning of the sieve plate.

[0044] In some embodiments, the aforementioned treatment of food waste can achieve an inorganic matter removal rate exceeding 60%, an organic matter recovery rate exceeding 85%, a residue yield below 12%, and a residue moisture content below 65%. The pulping pretreatment using this method is characterized by low impurity content and high organic matter content, making it easier to remove sand, impurities, and oil from the waste, which is crucial for ensuring the stable operation of subsequent processing systems.

[0045] In some embodiments, the airfoil blades 505 may be arranged in a three-leaf ring shape, and the front end of the airfoil blades 505 may not be set to a serrated shape, but may be set to a sharp blade structure, which can produce a cutting effect on food waste and is used for the pretreatment of food waste with good garbage classification, low impurity content and high moisture content.

[0046] To sum up, with the help of the above-mentioned technical scheme of the utility model, through the optimization and improvement design of the product of the utility model, the motor drives the transmission shaft to drive the guide blades and the airfoil blades to rotate at high speed. The high-speed rotation of the guide blades forms a violent turbulent circulation and the mutual peristalsis of pulp flow layers of different speeds in the pulping machine. In addition, the tearing of the airfoil blades and the force generated on the slurry achieve efficient crushing and separation of food waste. The rotor also has the functions of preventing slender fiber materials from wrapping around the shaft and self-cleaning of the screen plate.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotor suitable for efficient crushing of kitchen waste, characterized in that: The invention comprises a rotor base (503), a transmission shaft (502) is installed at the center of the rotor base (503), the rotor base (503) is arranged on the screen plate (501) through the transmission shaft (502), a plurality of guide vanes (504) are arranged above the rotor base (503), and a plurality of airfoil blades (505) are arranged around the periphery of the rotor base (503), and the airfoil blades (505) are arranged in a ring shape around the transmission shaft (502) and the rotor base (503).

2. A rotor suitable for efficient crushing of food waste according to claim 1, characterized in that: The sieve plate (501) is integrally die-cast, and the thickness of the sieve plate (501) is 10 to 20 mm. The sieve plate (501) is fixed to the bottom of the pulping machine by bolts, and the lower part of the sieve plate (501) is connected to a pulp discharge port.

3. A rotor suitable for efficient crushing of food waste according to claim 2, characterized in that: The sieve plate (501) is provided with a plurality of conical holes, the upper hole diameter of the conical holes is 8 mm, and the lower hole diameter of the conical holes is 6 mm.

4. The rotor suitable for efficient crushing of food waste according to claim 1, characterized in that: The guide blades (504) are three-leaf guide blades and are arranged in a spiral shape. A longitudinal height difference is formed between the starting end and the tail end of each three-leaf guide blade. When the guide blades (504) rotate at a high speed, violent turbulent circulation and mutual creep between pulp flow layers of different speeds can be formed in the pulping machine.

5. The rotor suitable for efficient crushing of food waste according to claim 1, characterized in that: The airfoil blades (505) are arranged in a six-leaf ring, and the front ends of the airfoil blades (505) are configured as sawtooth or sharp blade structures. When the airfoil blades (505) rotate at high speed, they can generate strong cutting and tearing forces on the food waste.

6. The rotor suitable for efficient crushing of food waste according to claim 5, characterized in that: The aerofoil blade (505) has an aerofoil cross-section, and an angle of attack of 5 to 10° is formed between the centerline of the aerofoil blade (505) and the sieve plate (501), and a spacing of 2 to 5 mm between the lower edge of the aerofoil blade (505) and the sieve plate (501). When the aerofoil blade (505) rotates at a high speed, it can generate a downward force on the slurry when passing through, thereby pushing the slurry downward to pass through the sieve plate (501).

7. The rotor suitable for efficient crushing of food waste according to claim 1, characterized in that: The guide vanes (504), the airfoil blades (505) and the rotor base (503) are integrally cast and formed using high-strength stainless steel material. The guide vanes, the airfoil blades and the base are integrally cast and formed. The surfaces of the guide vanes (504), the airfoil blades (505) and the rotor base (503) are all welded with wear-resistant tungsten carbide.

8. A hydraulic pulping machine, characterized in that: The invention comprises a rotor (5) as claimed in any one of claims 1 to 7, a hydraulic pulping machine tank body (1), a feed port (2), a pulp discharge port (3), a slag discharge port (4), a main shaft (6), and a pulley (7).

9. The hydraulic pulping machine according to claim 8, characterized in that: The rotor (5) is arranged at the center of the bottom of the hydraulic pulping machine tank (1), and is connected to the pulley (7) through the main shaft (6) to form a transmission assembly, and is further connected to the drive motor through a belt; the feed port (2) is located at the top of the hydraulic pulping machine tank (1); the pulp discharge port (3) is located at the bottom of the hydraulic pulping machine tank (1) and below the screen plate (501) of the rotor (5); and the slag discharge port (4) is located at the lower side of the hydraulic pulping machine tank (1).

10. The hydraulic pulping machine according to claim 8, characterized in that: The rotor (5) is connected to the bearing, the main shaft, the bearing seat, the pulley, and the drive motor through a transmission shaft (502) to form a transmission assembly; the rotor (5) is driven by the drive motor and the pulley together, the drive motor is variable frequency operated, the transmission ratio of the belt is generally 2.5 to 3, the operating speed of the rotor (5) is 150 to 300 r / min, and the working torque of the rotor (5) is ≥5000 N∙m.

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