Fresh gas floating cleaning mechanism

Abstract

The utility model belongs to the field of fresh gas float cleaning technology, especially a kind of fresh gas float cleaning mechanism, including gas float pool, the inner wall of gas float pool is fixedly installed with gas float device, the gas float device includes aeration pipe, the gas of aeration pipe delivery is to the fruit and vegetable needing cleaning in the gas float pool is turned over.This fresh gas float cleaning mechanism, by setting disturbance device, can strengthen cleaning effect, driving motor passes through gear set and drives rotating roller uniform speed rotation, and the disturbance vane of helical distribution generates the continuous axial thrust, and the fruit and vegetable in the gas float pool is steadily transported from one end to the other end, and radial disturbance force breaks the fruit and vegetable accumulation state, avoids local cleaning insufficient, and disturbance vane drives fruit and vegetable to make up and down, left and right compound motion, so that every fruit and vegetable can repeatedly contact the micro-bubble generated by aeration, and the physical impact force of bubble burst can be evenly applied to the surface of fruit and vegetable, and thoroughly remove the adherent mud, insect egg and other impurities.

Description

Technical Field

[0001] This utility model relates to the field of fresh air flotation cleaning technology, and in particular to a fresh air flotation cleaning mechanism. Background Technology

[0002] Fresh produce flotation cleaning is a cleaning device that mainly utilizes the principle of gas-liquid mixing. It generates a large number of dense microbubbles in water and uses the physical impact force generated when the bubbles burst, as well as turbulent water flow, to peel off and rinse the dirt on the surface of fruits and vegetables. Its core feature is that it is dominated by physical cleaning and is particularly good at removing strongly attached mud, dust, insect eggs, hair, insoluble particles from pesticides, and impurities in the folds and crevices of fruits and vegetables.

[0003] Chinese Patent No. CN216019010U discloses a fruit and vegetable bubble washing machine, belonging to the technical field of fruit and vegetable washing devices. It includes a frame with a water tank on it, and a fruit and vegetable conveying device on the frame. The conveying device includes a conveyor frame and a conveyor belt mounted on the conveyor frame. The conveyor frame includes a horizontal conveyor frame I, an inclined conveyor frame, and a horizontal conveyor frame II arranged sequentially. The horizontal conveyor frame I is located inside the water tank, and the horizontal conveyor frame II is located outside the water tank, with the horizontal conveyor frame II being higher than the horizontal conveyor frame I. A fan is also mounted on the frame, and the fan is connected to an air inlet pipe that extends into the water tank. This fruit and vegetable bubble washing machine can efficiently and conveniently clean fruits and vegetables.

[0004] However, the above solution relies solely on a single air inlet pipe at the bottom to generate bubbles, which then rise naturally. The cleaning effect depends mainly on the occasional contact between the bubbles and the fruits and vegetables during their ascent. The bubbles are unevenly distributed, mainly concentrated above the air inlet pipe, and there is no active tumbling mechanism designed at all. The tumbling of the fruits and vegetables depends entirely on the occasional impact of the bubbles and the friction of the conveyor belt, making the effect extremely uncontrollable. For clustered fruits and vegetables such as grapes and lychees, the internally adhered parts cannot be effectively broken up and cleaned. Utility Model Content

[0005] Based on the existing problems of single cleaning principle, dead corners and lack of effective tumbling mechanism in fresh food air flotation cleaning mechanism, resulting in poor cleaning uniformity, this utility model proposes a fresh food air flotation cleaning mechanism.

[0006] This utility model proposes a fresh produce air flotation cleaning mechanism, which includes an air flotation tank. An air flotation device is fixedly installed on the inner wall of the air flotation tank. The air flotation device includes an aeration pipe, and the gas transported by the aeration pipe agitates the fruits and vegetables that need to be cleaned in the air flotation tank.

[0007] The inner wall of the flotation tank is equipped with a disturbance device, which includes disturbance blades. The rotation of the disturbance blades disturbs the fruits and vegetables in the flotation tank.

[0008] Preferably, the flotation device further includes an isolation net, which is fixedly installed on the inner wall of the flotation tank, and two sets of aeration pipes are respectively fixedly installed on the inner bottom wall and inner side wall of the flotation tank, and a flushing spray pipe is fixedly installed on the outer surface of the flotation tank. Through the above technical solution, the two sets of aeration pipes are respectively fixedly installed on the inner bottom wall and inner side wall of the flotation tank to achieve three-dimensional aeration coverage; a rinsing spray pipe is fixedly installed on the top of the outer surface of the flotation tank, with the nozzle of the rinsing spray pipe facing the inside of the flotation tank, for secondary rinsing of the washed fruits and vegetables.

[0009] Preferably, the disturbance device further includes a rotating roller, which is rotatably connected to the inner wall of the flotation tank via a bearing. A rotating sealing ring is provided at the connection between the rotating roller and the flotation tank. A drive motor is fixedly installed on the outer surface of the flotation tank, and one end of the output shaft of the drive motor drives the rotating roller to rotate via a gear set. Through the above technical solution, the drive motor can drive the rotating roller to rotate, thereby driving the agitator blades to agitate and gently stroke the fresh fruits and vegetables, gently blocking and changing their posture, and assisting them to roll naturally. The agitator blades are made of silicone material, which avoids hard collisions with fruits and vegetables, greatly reduces mechanical damage, and can effectively break up fruits and vegetables that are stuck together (such as grapes and lychees), so that every surface can be cleaned.

[0010] Preferably, a support sleeve is fixedly connected to the outer surface of the rotating roller, and the outer surface of the support sleeve is fixedly installed to one end of the disturbance blade; Through the above technical solution, the disturbance blades are evenly arranged on both sides of the support sleeve, forming a shape similar to aquatic plants. The support sleeve is also made of silicone material, which makes it easy for the disturbance blades to remain in a soft state and deform, reducing the damage caused by the disturbance blades to fresh fruits and vegetables.

[0011] Preferably, a rubber tube is fixedly installed on the inner wall of both the support sleeve and the disturbance blade, and a braided tube is sleeved on the outer surface of the rubber tube, with one end of the braided tube fixedly installed to one end of the rubber tube; Through the above technical solution, when the rubber tube expands radially, it will forcibly stretch the fibers of the woven mesh, forcing the cross angle to decrease from large to small. When the angle decreases to the critical value, the fibers are completely straightened and tightened, the gaps disappear (the fibers are tightly attached), and the entire woven mesh forms a rigid cage structure. At this time, the fibers can no longer be stretched, thus giving the support sleeve and the disturbance blades a certain degree of hardness, which can wash hard fresh fruits and vegetables such as apples and potatoes, reducing the residue of impurities.

[0012] Preferably, a diverter tube is fixedly installed on the inner wall of the rotating roller, and one end of the rubber tube extends into the interior of the rotating roller and is fixedly connected to the outer surface of the diverter tube.

[0013] The above technical solution allows the gas to be transported into the rubber tube via a diversion pipe, causing the rubber tube to expand.

[0014] Preferably, an air pump is provided on the outer side of the flotation tank, and a control valve is fixedly installed at the air outlet end of the air pump through a connecting pipe. One end of the control valve is fixedly connected to one end of the diversion pipe through a connecting pipe and a rotary joint.

[0015] The above technical solution enables the air pump to automatically supply gas into the rubber tube when adjusting the hardness of the agitator blades. The control valve is a three-way valve, which can supply and discharge gas.

[0016] The beneficial effects of this utility model are as follows: 1. By setting up a disturbance device, the cleaning effect can be enhanced. The drive motor drives the rotating roller to rotate at a constant speed through the gear set. The spirally distributed disturbance blades generate a continuous axial thrust, which smoothly transports the fruits and vegetables in the flotation tank from one end to the other. At the same time, the radial disturbance force breaks up the accumulation of fruits and vegetables, avoiding insufficient cleaning in some areas. The disturbance blades drive the fruits and vegetables to make up-down and left-right compound movements, so that each fruit and vegetable can repeatedly come into contact with the microbubbles generated by aeration. The physical impact of the bursting bubbles can be evenly applied to the surface of the fruits and vegetables, thoroughly removing strongly attached mud, sand, insect eggs and other impurities. The combination structure of rubber tube and braided tube in the support sleeve gives the disturbance blades a certain degree of hardness adjustment. It can adjust the cleaning hardness according to the different hardness of fruits and vegetables, which solves the technical problems of the existing fresh food flotation cleaning mechanism, such as the single cleaning principle, the existence of cleaning dead corners and the lack of an effective tumbling mechanism, resulting in poor cleaning uniformity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a fresh food flotation cleaning mechanism proposed in this utility model; Figure 2 This is a perspective view of the isolation net structure of a fresh food flotation cleaning mechanism proposed in this utility model; Figure 3 This is a perspective view of the rotating roller structure of a fresh food flotation cleaning mechanism proposed in this utility model; Figure 4 This is a perspective view of the disturbance blade structure of a fresh food flotation cleaning mechanism proposed in this utility model; Figure 5 This is a perspective view of the rubber tube structure of a fresh food air flotation cleaning mechanism proposed in this utility model.

[0018] In the diagram: 1. Flotation tank; 11. Aeration pipe; 12. Isolation net; 13. Flushing nozzle; 2. Rotating roller; 21. Drive motor; 22. Support sleeve; 23. Disturbance blade; 3. Rubber hose; 31. Braided hose; 32. Diverter pipe; 33. Air pump; 34. Control valve. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figures 1-5 A fresh produce air flotation cleaning mechanism includes an air flotation tank 1. A lifting mechanism is provided on the other side of the air flotation tank 1. The cleaned fresh fruits and vegetables are transported to the next process by an inclined conveyor belt. An air flotation device is fixedly installed on the inner wall of the air flotation tank 1. The air flotation device includes an aeration pipe 11 made of 304 stainless steel. The pipe wall of the aeration pipe 11 has dense aeration holes with a diameter of 0.5-1mm. The compressed air transported by the aeration pipe 11 forms microbubbles through the aeration holes. During the floating process of the microbubbles, they impact the fruits and vegetables that need to be cleaned in the air flotation tank 1, and at the same time drive the water flow to turn the fruits and vegetables.

[0021] Specifically, the flotation device also includes a stainless steel mesh 12 with a mesh size of 5-8mm. The mesh 12 is fixedly installed on the inner wall of the flotation tank 1 and located outside the aeration pipe 11 to prevent fruits and vegetables from directly contacting the aeration pipe 11 and causing blockage of the aeration holes. Two sets of aeration pipes 11 are fixedly installed on the inner bottom wall of the flotation tank 1 and symmetrically distributed in the middle of the two side walls, respectively. The bottom aeration pipe 11 generates a vertically upward air cascade, while the side wall aeration pipes 11 generate a horizontal vortex, achieving three-dimensional aeration coverage. One end of the aeration pipe 11 is fixedly connected to the air pump 33, thereby generating... Dense bubbles are generated. A rinsing nozzle 13 is fixedly installed on the top of the outer surface of the flotation tank 1. The nozzle of the rinsing nozzle 13 faces the inside of the flotation tank 1 and is located above the lifting mechanism. It can rinse the fresh produce during the cleaning process and the fresh produce transported by the lifting mechanism after cleaning. The spray pressure is 0.2-0.3MPa. It is used to rinse the fruits and vegetables after cleaning. One end of the rinsing nozzle 13 is fixedly connected to the flotation tank 1 through a water pump and a filtration mechanism. The water pump draws the filtered water in the flotation tank 1 and rinses the fresh fruits and vegetables in the flotation tank 1 through the rinsing nozzle.

[0022] The isolation net 12 prevents fruits and vegetables from sinking to the bottom or contacting the aeration pipes 11 at the bottom, avoiding damage and equipment blockage. The design of two sets of aeration pipes 11 at the bottom and side walls forms a multi-dimensional bubble flow that combines air cascades and vortices, making the bubble distribution more uniform and ensuring thorough cleaning. The rinsing spray pipe 13 can perform a final rinse before discharge, ensuring the final cleanliness of the fruits and vegetables. The flotation tank 1, lifting mechanism, aeration pipes 11, and rinsing spray pipe 13 are the existing structures of fruit and vegetable bubble cleaning machines and represent existing technology.

[0023] The inner wall of the flotation tank 1 is equipped with a disturbance device, which includes a disturbance blade 23. When the blade rotates, it generates axial thrust and radial disturbance force to actively move the fruits and vegetables in the flotation tank 1 and prevent them from piling up.

[0024] Specifically, the disturbance device also includes a hollow stainless steel rotating roller 2. The rotating roller 2 is rotatably connected to the inner walls of both sides of the flotation tank 1 via deep groove ball bearings. The axis of the rotating roller 2 is parallel to the width direction of the flotation tank 1. A fluororubber rotating sealing ring is provided at the connection between the rotating roller 2 and the flotation tank 1 to ensure sealing during rotation. A drive motor 21 is fixedly installed on the outer surface of the flotation tank 1. The drive motor 21 is a Panasonic MINASA6 series servo motor. One end of its output shaft drives the rotating roller 2 to rotate through a gear set. The gear set includes two meshing gears. The two gears are fixedly installed on the output shaft of the drive motor 21 and one end of the rotating roller 2, respectively. A protective shell can be installed on the outside of the gear set to prevent the gears from being contaminated. The drive motor 21 is electrically connected to a PLC controller, model Siemens S7-1200. The PLC controller has a preset program to control the drive motor 21 to rotate at a low speed of 5-15 rpm.

[0025] Specifically, at least six sets of annularly distributed support sleeves 22 are uniformly fixed and connected to the outer surface of the rotating roller 2 along the axial direction. The support sleeves 22 are perpendicular to the rotating roller 2. The outer surface of the support sleeves 22 and one end of the agitator blades 23 are integrally formed by pressing. Multiple sets of symmetrically distributed agitator blades 23 are fixedly connected to both sides of each support sleeve 22. The agitator blades 23 are made of food-grade silicone. The support sleeves 22 provide strong mechanical support to ensure that the blades will not fall off when subjected to force. The food-grade silicone blades ensure the safety and hygiene of the parts that come into direct contact with fruits and vegetables, while their inherent softness provides basic protection against bumps and scratches.

[0026] Specifically, a rubber tube 3 is fixedly installed on the inner wall of the support sleeve 22, and a braided tube 31 is sleeved on the outer surface of the rubber tube 3. The braided tube 31 is made of high-strength Kevlar fiber, and its two ends are fixedly connected to the ends of the rubber tube 3 through a vulcanization process, together forming a pneumatic muscle fiber. The base of the disturbance blade 23 and the support sleeve 22 are encapsulated inside the pneumatic muscle fiber formed by the rubber tube 3 and the braided tube 31 through a coating molding process. The pneumatic muscle fiber is embedded in the support sleeve 22 and the disturbance blade 23, giving the disturbance blade 23 the ability to change stiffness. By inflating and deflating the air, the blade can switch between soft and hard states, so that it can adaptively switch from cleaning delicate berries to cleaning hard root vegetables, making it extremely versatile.

[0027] Specifically, a diverter pipe 32 is fixedly installed on the inner wall of the rotating roller 2. One end of the rubber tube 3 extends into the interior of the rotating roller 2 and is fixedly connected to the outer surface of the diverter pipe 32. The diverter pipe 32 acts as a fixed central air path distributor, which can deliver compressed air to each pneumatic muscle fiber simultaneously and evenly, ensuring that all the perturbation blades 23 can change stiffness synchronously and consistently, and the action is coordinated and reliable.

[0028] An air pump 33 is installed on the outer side of the flotation tank 1. The air pump 33 is a FESTO oil-free silent air pump 33. A control valve 34 is fixedly installed at its air outlet through a connecting pipe. The control valve 34 is an SMCITV2030-012BL three-way electro-proportional valve. One end of the control valve 34 is fixedly connected to one end of the diverter pipe 32 through a connecting pipe and a rotary joint. Both the control valve 34 and the air pump 33 are electrically connected to a PLC controller. By controlling the electromagnetic proportional valve and the silent air pump 33 through the PLC, precise and automatic program control of the blade stiffness change is realized. The operator only needs to select the fruit and vegetable type on the control panel, and the system can automatically adjust the blade to the optimal softness and hardness state. It has a high degree of intelligence and is easy to operate. The rotary joint solves the dynamic sealing problem of the connection between the rotating parts and the fixed air circuit.

[0029] By setting up a disturbance device, the cleaning effect can be enhanced. The drive motor 21 drives the rotating roller 2 to rotate at a constant speed through the gear set. The spirally distributed disturbance blades 23 generate a continuous axial thrust, which smoothly transports the fruits and vegetables in the flotation tank 1 from one end to the other. At the same time, the radial disturbance force breaks the accumulation of fruits and vegetables, avoiding insufficient cleaning in some areas. The disturbance blades 23 drive the fruits and vegetables to make up-down and left-right compound movements, so that each fruit and vegetable can repeatedly come into contact with the microbubbles generated by aeration. The physical impact force of the bursting bubbles can be evenly applied to the surface of the fruits and vegetables, thoroughly removing strongly attached mud, sand, insect eggs and other impurities. The combination structure of the rubber tube 3 and the braided tube 31 in the support sleeve 22 gives the disturbance blades 23 a certain degree of hardness adjustment. It can adjust the cleaning hardness according to the different hardness of fruits and vegetables, which solves the technical problems of the existing fresh food flotation cleaning mechanism, such as the single cleaning principle, the existence of cleaning dead corners and the lack of an effective tumbling mechanism, resulting in poor cleaning uniformity.

[0030] Working principle: First, cleaning water is injected into the flotation tank 1. Fruits and vegetables are fed into the cleaning area of ​​the flotation tank 1 by the corresponding feeding device. The three-dimensional flotation cleaning is started. Compressed air is transported through pipelines and released through two sets of aeration pipes 11 installed on the bottom wall and inner side wall of the flotation tank 1. The bottom aeration pipe 11 generates a dense cluster of vertically upward bubbles, forming an air waterfall, which lifts the fruits and vegetables into a suspended state in the water and strongly washes the bottom. The side wall aeration pipe 11 generates a horizontal bubble flow tangential to the tank wall, which pushes the water to form a stable vortex, causing the suspended fruits and vegetables to rotate horizontally. The isolation net 12 separates the cleaning area from the bottom bubble generation area to prevent the fruits and vegetables from sinking or contacting the aeration pipe 11. At the same time, the PLC controller starts the drive motor 21, which drives the rotating roller 2 to rotate at a low speed of 5-15 rpm through the gear set. The support sleeve 22 and the disturbance blade 23 fixed on the rotating roller 2 rotate synchronously. When cleaning delicate fruits and vegetables, the control valve 34 closes the air passage or is in the exhaust state. The rubber tube 3 and braided tube 31 inside the disturbance blade 23 and the support sleeve 22 are kept loose. At this time, the disturbance blade 23 is extremely soft and guides and moves the fruits and vegetables with the gentlest force to achieve damage-free tumbling. When cleaning hard fruits and vegetables, the control valve 34 precisely adjusts according to the signal ratio to deliver compressed air to each rubber tube 3 through the rotary joint and the diverter pipe 32. The air pressure causes the rubber tube 3 to expand, contract and harden, thereby increasing the overall rigidity of the disturbance blade 23 and providing sufficient driving force to ensure that the heavy root vegetables are fully turned over. At the same time, the rinsing nozzle 13 sprays water to rinse the fresh produce.

[0031] After cleaning, the fresh produce is transported to the discharge end by the lifting mechanism. During this process, the rinsing spray pipe 13 on the outer surface of the flotation tank 1 is activated to use clean water to perform a final rinse on the fruits and vegetables, removing residual sewage and foam from their surface, thereby obtaining the final product with the highest level of cleanliness.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fresh produce flotation cleaning mechanism, comprising a flotation tank (1), characterized in that: The air flotation tank (1) is fixedly installed with an air flotation device, which includes an aeration pipe (11). The gas transported by the aeration pipe (11) turns over the fruits and vegetables that need to be cleaned in the air flotation tank (1). The flotation device also includes an isolation net (12), which is fixedly installed on the inner wall of the flotation tank (1). Two sets of aeration pipes (11) are fixedly installed on the inner bottom wall and inner side wall of the flotation tank (1), respectively. A flushing spray pipe (13) is fixedly installed on the outer surface of the flotation tank (1). The inner wall of the flotation tank (1) is provided with a disturbance device, which includes a disturbance blade (23). The rotation of the disturbance blade (23) disturbs the fruits and vegetables in the flotation tank (1).

2. The fresh produce flotation cleaning mechanism according to claim 1, characterized in that: The disturbance device also includes a rotating roller (2), which is rotatably connected to the inner wall of the flotation tank (1) via a bearing. A rotating sealing ring is provided at the connection between the rotating roller (2) and the flotation tank (1). A drive motor (21) is fixedly installed on the outer surface of the flotation tank (1). One end of the output shaft of the drive motor (21) drives the rotating roller (2) to rotate via a gear set.

3. The fresh produce flotation cleaning mechanism according to claim 2, characterized in that: The outer surface of the rotating roller (2) is fixedly connected to a support sleeve (22), and the outer surface of the support sleeve (22) is fixedly installed to one end of the disturbance blade (23).

4. The fresh produce flotation cleaning mechanism according to claim 3, characterized in that: The inner walls of the support sleeve (22) and the disturbance blade (23) are both fixedly installed with rubber tubes (3), and the outer surface of the rubber tube (3) is fitted with a braided tube (31), one end of the braided tube (31) is fixedly installed with one end of the rubber tube (3).

5. A fresh produce flotation cleaning mechanism according to claim 4, characterized in that: A diverter pipe (32) is fixedly installed on the inner wall of the rotating roller (2). One end of the rubber tube (3) extends into the interior of the rotating roller (2) and is fixedly connected to the outer surface of the diverter pipe (32).

6. The fresh produce flotation cleaning mechanism according to claim 5, characterized in that: An air pump (33) is provided on the outer side of the flotation tank (1). A control valve (34) is fixedly installed at the air outlet end of the air pump (33) through a connecting pipe. One end of the control valve (34) is fixedly connected to one end of the diversion pipe (32) through a connecting pipe and a rotary joint.

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