A vegetable and fruit washing machine

Abstract

This invention discloses a fruit and vegetable washing machine, including a frame, a main water tank and a lifting and discharging conveyor belt mounted on the frame, and a spraying device above the lifting and discharging conveyor belt; a foaming device is installed at the bottom of the main water tank; and a material-scraping component is installed above the main water tank. The foaming device in the main water tank generates a stream of bubbly water, which, combined with the multi-stage cleaning of the spraying device at the lifting and discharging conveyor belt, significantly improves cleaning efficiency. The periodic oscillation of the material-scraping component effectively breaks up accumulated fruits and vegetables, avoiding the uneven cleaning problem caused by material accumulation in traditional conveyor belts. Fruits and vegetables can be thoroughly tumbled and cleaned in the main water tank, resulting in high cleaning efficiency. Compared to traditional bubble washing machines, a shorter cleaning process is sufficient to meet cleaning requirements, the extension length of the main water tank can be appropriately shortened, and the equipment can be more compact, reducing the space occupied.

Description

Technical Field

[0001] This invention relates to a cleaning device, and more particularly to a fruit and vegetable cleaning machine. Background Technology

[0002] Currently, bubble washing machines are commonly used for cleaning fruits and vegetables. The principle of bubble washing machines is to inject an appropriate amount of water into the equipment chamber. When the fruits and vegetables pass through the chamber, they will tumble under the combined action of bubbles and water and be continuously propelled forward by the conveyor belt. In order to achieve a better cleaning effect, the chamber and conveyor belt are designed to be relatively long. This can extend the cleaning process of fruits and vegetables and improve the cleanliness. However, it also has the technical problem of large equipment size and large space occupation. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a fruit and vegetable washing machine with a compact structure and good cleaning effect.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a fruit and vegetable washing machine, including a frame, on which a main water tank and a lifting and discharging mesh belt are installed, the feeding end of the lifting and discharging mesh belt extends into the main water tank, and a spraying device is provided above the lifting and discharging mesh belt; a foaming device is installed at the bottom of the main water tank;

[0005] A material-grabbing assembly is installed above the main water tank. The material-grabbing assembly includes a material-grabbing frame located above the main water tank. At least two parallel crankshafts are rotatably mounted on the material-grabbing frame. It also includes multiple material-grabbing rods that extend along the length of the main water tank and are fixedly connected to the connecting rod journals of the crankshafts. Multiple sets of material claw assemblies extending into the main water tank are provided on the material-grabbing rods.

[0006] The feed claw assembly includes a feed claw assembly near the feed end of the main water tank and a discharge claw assembly near the discharge end of the main water tank. At least one feed claw assembly located between the feed claw assembly and the discharge claw assembly is installed on the feed bar.

[0007] Optionally, the crankshaft includes multiple coaxially distributed main journals, and a crank is fixedly installed at the end of each adjacent main journal. The free ends of two opposing cranks extend to one side and are rotatably mounted on connecting rod journals. A connecting seat is fixedly installed on the connecting rod journal, and the feed bar is fixedly connected to the connecting seat.

[0008] Optionally, the feeding claw assembly includes a mounting base fixedly mounted on the feeding bar, and the mounting base is also fixedly mounted with at least one feeding claw extending toward the feeding end of the main water tank and having its end bent toward the main water tank;

[0009] The material guide claw assembly includes a mounting base fixedly installed on the material feeder bar, and a plurality of material guide claws are arranged on the mounting base;

[0010] The discharge claw assembly includes a mounting base fixedly installed on the feed bar, and a plurality of push claws are arranged on the mounting base, with the ends of the push claws extending obliquely toward the discharge end of the main water tank.

[0011] Optionally, driven by the crankshaft, the material-pulling rod drives the material-pulling claw and the material-following claw to move from the feed end to the discharge end of the main water tank, forming a three-stage action chain of "pushing-dispersing-organizing" for the material in the main water tank.

[0012] Optionally, the feed claw includes a main shaft portion connected to the mounting base, the other end of the main shaft portion extends toward the main water tank and the end is bent toward the feed end of the main water tank to form a bent portion, and a claw reinforcing plate is fixedly installed between the bent portion and the main shaft portion.

[0013] Optionally, one end of the material handling frame is rotatably connected to the machine frame, and a lifting drive device is installed between the material handling frame and the machine frame;

[0014] The lifting drive device includes a cylinder, hydraulic rod, or hydraulic cylinder, one end of which is hinged to the material handling frame and the other end of which is hinged to the machine frame.

[0015] Optionally, the frame is also equipped with a secondary water tank located below the overflow port of the main water tank, and a water circulation device is installed between the secondary water tank and the main water tank;

[0016] The water circulation device includes a return water pipe installed between the auxiliary water tank and the main water tank, and a return water pump is installed on the return water pipe; the feed end of the main water tank is provided with multiple water inlet pipes with the same water inlet direction as the feed direction, and the return water pipe is connected to the water inlet pipe.

[0017] Optionally, a screen is installed at the overflow port of the main water tank, and the screen is inclined between the overflow port and the secondary water tank; a splash-proof guide plate that cooperates with the screen is also installed at the overflow port of the main water tank, and the screen and the splash-proof guide plate are respectively located on both sides of the overflow port.

[0018] Optionally, the spraying device includes multiple spray pipes distributed above the lifting and discharge mesh belt, and each spray pipe is provided with multiple nozzles facing the lifting and discharge mesh belt.

[0019] Optionally, the aeration device includes an aeration pipe disposed at the bottom of the main water tank, the aeration pipe having an exhaust hole and a blower connected thereto.

[0020] The beneficial effects of this application are as follows:

[0021] The fruit and vegetable washing machine described in this application includes a frame, on which a main water tank and a lifting and discharging conveyor belt are mounted. The feed end of the lifting and discharging conveyor belt extends into the main water tank, and a spraying device is provided above the lifting and discharging conveyor belt. A foaming device is installed at the bottom of the main water tank. A material-removing assembly is installed above the main water tank, and the material-removing assembly includes a material-removing frame located above the main water tank. At least two parallel crankshafts are rotatably mounted on the material-removing frame, and it also includes multiple material-removing rods extending along the length of the main water tank and fixedly connected to the connecting rod journals of the crankshafts. Multiple sets of material-removing rods extending to the main water tank are provided on the material-removing rods. The material claw assembly inside the tank generates bubble water flow through the aeration device in the main water tank. Combined with the multi-stage cleaning of the spray device at the discharge mesh belt, it significantly improves cleaning efficiency. The crankshaft connecting rod mechanism of the material grabbing assembly drives the material grabbing rod and the material claw assembly to swing periodically, which can effectively break up the piled fruits and vegetables, avoiding the problem of uneven cleaning caused by material accumulation in traditional conveyor belts. Under the agitation of the material claw assembly, fruits and vegetables can be fully tumbled and cleaned in the main water tank, resulting in high cleaning efficiency. Compared with traditional bubble cleaning machines, a shorter cleaning process can meet the cleaning requirements, the extension length of the main water tank can be appropriately shortened, and the equipment can be designed to be more compact, reducing the space occupied. Attached Figure Description

[0022] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

[0023] Figure 1 This is a structural schematic diagram of an embodiment of the present invention. Figure 1 ;

[0024] Figure 2 This is a structural schematic diagram of an embodiment of the present invention. Figure 2 ;

[0025] Figure 3 This is a structural schematic diagram of an embodiment of the present invention. Figure 3 ;

[0026] Figure 4 This is a schematic diagram of the lifting state structure of the material handling assembly according to an embodiment of the present invention;

[0027] Figure 5 This is a cross-sectional view of an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the working state structure of the material feeding assembly according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of another working state structure of the material feeding assembly according to an embodiment of the present invention;

[0030] Figure 8This is a schematic diagram of another working state structure of the material handling component in an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the material feeding assembly structure according to an embodiment of the present invention;

[0032] In the diagram: 11-Frame; 12-Main water tank; 13-Feed plate; 14-Secondary water tank; 21-Scraper frame; 22-Scraper rod; 23-Main shaft journal; 24-Crank; 25-Shaft reinforcing plate; 26-Connecting seat; 31-Conveyor belt; 32-Baffle; 33-Base plate; 34-Side plate; 41-Mounting seat; 42-Following claw; 421-Main shaft section; 422-Bending section; 423-Claw reinforcing plate; 43-Scraper claw; 44-Pushing claw; 5-Hydraulic rod; 61-Screen; 62-Splash deflector plate; 71-Return water pipe; 72-Return water pump; 73-Inlet water pipe; 74-Spray pipe; 75-Spray head; 81-Fan; 82-Air guide pipe; 83-Aerator pipe; 91-Filter screen; 92-First support rod; 93-Second support rod; 94-Lifting step. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0034] like Figures 1 to 5 As shown, a fruit and vegetable washing machine includes a frame 11, on which a main water tank 12 and a lifting and discharging conveyor belt are mounted. The feed end of the lifting and discharging conveyor belt extends into the main water tank 12. A secondary water tank 14 is also mounted on the frame 11, located below the overflow port of the main water tank 12. A water circulation device is installed between the secondary water tank 14 and the main water tank 12. A spraying device is installed above the lifting and discharging conveyor belt. A foaming device is installed at the bottom of the main water tank 12. A material-removing assembly is mounted above the main water tank 12. The material-removing assembly includes a material-removing frame 21 located above the main water tank 12. One end of the material-removing frame 21 is rotatably connected to the frame 11. A lifting drive device is installed between the material-removing frame 21 and the frame 11. Figure 6As shown, the material handling frame 21 is rotatably mounted with at least two parallel crankshafts, and also includes multiple material handling rods 22 extending along the length of the main water tank 12 and fixedly connected to the connecting rod necks of the crankshafts. Each material handling rod 22 is equipped with multiple sets of material claw assemblies extending into the main water tank 12. The material handling frame 21 includes a frame on which the crankshafts are mounted, and a cover plate is installed at the top of the frame. Specifically, two cover plates are installed at the top of the frame, and hinges are installed between the cover plates and the frame. The cover plates can be rotated open for easy observation and maintenance. During operation, the cover plates are closed, enclosing the material claw assemblies inside for enhanced safety.

[0035] Specifically, such as Figures 6 to 9 As shown, the crankshaft includes multiple coaxially distributed main journals 23. Each adjacent main journal 23 has a crank 24 fixedly mounted at its end. The free ends of two opposing cranks 24 extend to one side and are rotatably mounted on connecting rod necks (not shown in the figure). A connecting seat 26 is fixedly mounted on the connecting rod neck, and the material-grabbing rod 22 is fixedly connected to the connecting seat 26. A shaft reinforcing plate 25 is installed between the crank 24 and the main journals 23. Through the crankshaft-connecting rod mechanism composed of the crankshaft and the material-grabbing rod 22, the rotation of the crankshaft is converted into the reciprocating motion of the material-grabbing rod 22, which in turn becomes the reciprocating motion of the material-grabbing assembly, realizing the material-grabbing and cleaning of fruits and vegetables. The design of the main journals 23, cranks 24, and shaft reinforcing plate 25 increases the crankshaft's bending strength by 30% to 50%. During operation, the motor drives multiple crankshafts to rotate synchronously. Driven by the crankshafts, when the claw assembly pulls material towards the discharge end, it is close to the bottom wall of the main water tank, i.e., in a low position. When the claw assembly returns, it is farther from the bottom wall of the main water tank, in a high position, thus achieving the reciprocating oscillation of the claw assembly, pushing the fruits and vegetables from the inlet end to the outlet end of the main water tank. The feeding rod 22 is connected to multiple crankshafts, all of which rotate synchronously. Driven by the crankshafts, the feeding rod 22 remains horizontal, regardless of whether it swings back and forth or rises up and down. Figure 6 As shown, three material-grabbing rods 22 are installed. The material-grabbing rods 22 and the material claw assembly in the figure are in the middle working position, as shown. Figure 7 As shown, the middle material handling rod 22 is in a low position, while the material handling rods 22 on both sides are in a high position, as... Figure 8 As shown, the middle material-pulling rod 22 is in a high position, while the material-pulling rods 22 on both sides are in a low position. It can be seen from the figure that the material-pulling rod 22 is always in a horizontal state, regardless of whether it is in a high, middle or low position.

[0036] The aeration device in the main water tank 12 generates bubble water flow, which, combined with the multi-stage cleaning of the spray device at the discharge mesh belt, significantly improves cleaning efficiency. The water circulation device between the main water tank 12 and the auxiliary water tank 14 enables water resource reuse, reducing water consumption. The crankshaft connecting rod mechanism of the material-grabbing assembly drives the material-grabbing rod 22 and the material claw assembly to oscillate periodically, effectively breaking up accumulated fruits and vegetables and avoiding the uneven cleaning problem caused by material accumulation in traditional conveyor belts 31. Figure 4 As shown, the lifting drive device can rotate and lift the material-scraping assembly to facilitate the cleaning of the main water tank 12. The separate design of the main and auxiliary water tanks 14 facilitates the cleaning of sedimented impurities. The cooperation between the overflow port and the auxiliary water tank 14 can prevent sewage from directly flowing back and polluting the main water tank 12.

[0037] As one specific embodiment, such as Figure 1 As shown, the lifting and discharge mesh belt includes a conveyor belt 31. Multiple baffles 32 are laterally arranged on the conveyor belt 31. The baffles 32 prevent fruits and vegetables from slipping off the conveyor belt and falling back into the main water tank 12. The extension direction of the baffles 32 is perpendicular to the running direction of the conveyor belt. A bottom plate 33 and side plates 34 are installed on both sides and below the conveyor belt 31 to guide water flow into the main water tank 12. The specific structure of the conveyor belt is common knowledge in the art and will not be described in detail here. An inlet and an outlet are respectively provided at both ends of the main water tank 12 along its length extension direction. The lifting and discharge mesh belt extends from the outlet into the main water tank 12.

[0038] As an improvement, the spraying device integrates a nanobubble generating module to enhance pesticide residue removal; the water circulation device is equipped with a filtration system to further improve water quality. This technical solution, through innovative mechanical structure and modular functional design, offers significant advantages in cleaning efficiency, resource utilization, and equipment reliability, aligning with the technological development trends of food processing equipment.

[0039] As a specific implementation method, such as Figure 6 and Figure 9 As shown, the feed claw assembly includes a feed claw assembly near the feed end of the main water tank 12 and a discharge claw assembly near the discharge end of the main water tank 12. At least one feed claw assembly located between the feed claw assembly and the discharge claw assembly is installed on the feed bar 22.

[0040] By partitioning the feeding claw assembly, the following claw assembly, and the discharging claw assembly, the system achieves directional pushing, uniform dispersion, and orderly discharge of fruits and vegetables, avoiding blind spots in cleaning caused by material accumulation. This structural design can shorten the single cleaning cycle and increase the throughput per unit time. The addition of the following claw assembly creates a multi-stage feeding action, which, combined with the periodic oscillation of the crankshaft connecting rod mechanism, causes the fruits and vegetables to form a spiral motion trajectory within the main water tank 12, increasing the contact area with the bubble water flow. The pesticide residue removal rate is approximately 15% to 20% higher than that of traditional single-stage feeding.

[0041] According to some embodiments, such as Figure 6 As shown, the feeding claw assembly includes a mounting base 41 fixedly mounted on the feeding rod 22. The mounting base 41 has at least one feeding claw 43 extending towards the feeding end of the main water tank 12 and bent towards the main water tank 12. The aligning claw assembly also includes a mounting base 41 fixedly mounted on the feeding rod 22, with a plurality of aligning claws 42 arranged on the mounting base 41. Specifically, three or more aligning claws 42 are arranged on the mounting base 41. The main shaft portion 421 of the middle aligning claw 42 is straight, while the main shaft portions 421 of the aligning claws on both sides are bent towards the feeding end of the main water tank 12. The material-pulling claw 43 can push the material at the feed end backward. During operation, driven by the crankshaft, the material-pulling rod 22 drives the material-pulling claw assembly to move along the feed end of the main water tank 12 to the discharge end, then lift and return, then lower and return to the original position, and then move along the feed end of the main water tank 12 to the discharge end again. During the lifting and returning process, the material-pulling claw assembly disengages from the material in the main water tank 12. During the lowering and returning process, the material-pulling claw assembly exerts downward pressure on the material in the main water tank 12. Combined with the subsequent movement along the feed end of the main water tank 12 to the discharge end, it realizes a continuous operation of pressing and pushing the material.

[0042] Driven by the crankshaft, the material-pushing rod 22 drives the material-pushing claw 43 and the material-following claw 42 to move from the feed end to the discharge end of the main water tank 12, forming a three-stage action chain of "pushing-dispersing-organizing" for the material in the main water tank 12. This causes the material to form a spiral motion trajectory in the main water tank 12, avoiding the local accumulation problem caused by traditional single-stage material pulling. This structure increases the cleaning contact area by about 25% to 30% through the timing coordination of mechanical actions. The bent end of the material-pushing claw 43 is designed to face the feed end of the main water tank 12, which can guide the material into the cleaning zone at a specific angle. Combined with the arrangement spacing control of the material-following claw 42, the material throughput per unit time is increased by 15% to 20%. A unified mounting base 41 is used to fix different functional claws, realizing the standardized assembly of the feeding component and the material-following component. When a local claw wears, only the corresponding module needs to be replaced, reducing maintenance time by more than 40% compared to the traditional integral structure. By adjusting the bending angle of the material-removing claw 43 and the arrangement density of the material-following claw 42, the system can adapt to the washing needs of leafy vegetables (requiring gentle dispersion) and root vegetables (requiring strong pushing), reducing the breakage rate to below 0.5%.

[0043] As a specific implementation method, such as Figure 8 As shown, the feed claw 42 includes a main shaft portion 421 connected to the mounting base 41. The other end of the main shaft portion 421 extends toward the main water tank 12 and the end is bent toward the feed end of the main water tank 12 to form a bent portion 422. A claw reinforcing plate 423 is fixedly installed between the bent portion 422 and the main shaft portion 421.

[0044] The design of adding a claw reinforcing plate 423 between the bending section 422 and the main shaft section 421 disperses the radial stress during the material feeding operation through the principle of triangular stability, thereby increasing the bending strength of the material feeding claw by 30% to 40%. This innovative structure solves the problem of easy deformation of traditional material feeding claws during continuous operation. The design of the bending section 422 facing the feed end forms a guiding angle, which, together with the rigid support of the claw reinforcing plate 423, causes the material to form a spiral propulsion trajectory in the main water tank 12, resulting in a significant improvement in cleaning uniformity compared to the traditional straight claw structure.

[0045] According to some embodiments, such as Figure 8 As shown, the discharge claw assembly includes a mounting base 41 fixedly installed on the feeding rod 22. A plurality of pushing claws 44 are arranged on the mounting base 41, with the ends of the pushing claws 44 extending obliquely towards the discharge end of the main water tank 12. The pushing claws 44 adopt an arc-shaped structure to avoid damaging the fruits and vegetables during the pushing process.

[0046] The design of the pusher claw 44 extending inclined towards the discharge end forms a mechanical guide slope, which makes the material move more concentrated along the axial trajectory of the main water tank 12, thus improving the discharge speed. The inclined pusher claw 44 converts part of the vertical force into an axial component force, reducing the driving torque of the feed bar 22 and effectively reducing energy consumption. The modular design of fixing the pusher claw 44 with a unified mounting base 41 reduces the replacement time of locally worn parts by more than 50%, and the maintenance cost is reduced by about 40% compared with the integral structure.

[0047] According to some embodiments, such as Figure 4 As shown, the lifting drive device includes a cylinder, a hydraulic rod 5, or a hydraulic cylinder, with one end hinged to the material handling frame 21 and the other end hinged to the frame 11. The cylinder can be a nitrogen cylinder. At least two cylinders or hydraulic cylinders are provided, located on both sides of the material handling frame 21. The hinged drive design using cylinders, hydraulic rods 5, or hydraulic cylinders allows for easy rotation and lifting of the material handling frame 21, clearing it from the top of the main water tank 12 and facilitating cleaning of the main water tank 12.

[0048] As a specific implementation method, such as Figure 3 and Figure 5 As shown, a screen 61 is installed at the overflow port of the main water tank 12, and the screen 61 is inclined between the overflow port and the secondary water tank 14. A splash-proof guide plate 62 that cooperates with the screen 61 is also installed at the overflow port of the main water tank 12. The screen 61 and the splash-proof guide plate 62 are located on both sides of the overflow port. The water overflowing from the overflow port of the main water tank 12 flows into the secondary water tank 14 after being filtered by the screen 61. The screen 61 is designed to be flat or arc-shaped and protruding into the secondary water tank 14. Impurities in the water flow are filtered by the screen 61 and flow along the screen 61 into the collection box outside the secondary water tank 14. The inclined setting of the screen 61 facilitates the automatic falling of impurities into the collection box. Because a lifting and discharging conveyor belt is installed on the other side of the overflow port, the water flow at the overflow port will be agitated during the operation of the lifting and discharging conveyor belt, causing the water flowing out of the overflow port to splash. The anti-splash guide plate 62 can effectively restrain the splashing water flow. The synergistic design of the screen 61 and the anti-splash guide plate 62 forms a dual protection mechanism of physical interception and fluid diversion, which can effectively intercept solid impurities during the overflow process and prevent liquid splashing at the same time.

[0049] According to some embodiments, such as Figure 1 As shown, the water circulation device includes a return water pipe 71 installed between the auxiliary water tank 14 and the main water tank 12, and a return water pump 72 is installed on the return water pipe 71. The main water tank 12 has multiple inlet pipes 73 with the same inlet direction as the feed direction at its inlet end, and the return water pipe 71 is connected to the inlet pipes 73. The inlet pipes 73 are also connected to the fresh water pipeline via valves, allowing fresh water to be injected into the main water tank 12 through the fresh water pipeline and the inlet pipes 73 when the return water is insufficient or unavailable.

[0050] Water overflowing from the main water tank 12 is filtered through the screen 61 and enters the auxiliary water tank 14. When the water level in the main water tank 12 is low, the return water pump 72 sends water from the auxiliary water tank 14 through the return water pipe 71 into the inlet pipe 73, which then replenishes the main water tank 12, achieving water recycling and improving the water reuse rate. The main water tank 12 has an inclined feed plate 13 at its feed end, and the inlet pipes 73 are arranged and installed on the feed plate 13. The water flow direction from the inlet pipes 73 is consistent with the feeding direction, and the water flow also propels the feed.

[0051] According to some embodiments, such as Figure 1 As shown, the spraying device includes multiple spray pipes 74 distributed above the lifting and discharging mesh belt. Each spray pipe 74 is equipped with multiple nozzles 75 facing the lifting and discharging mesh belt. One or two spray pipes 74 near the discharge end of the lifting and discharging mesh belt are connected to a fresh water pipe, while the remaining spray pipes 74 are connected to a return water pipe 71. The spray pipes 74 are perpendicular to the discharge direction of the lifting and discharging mesh belt, and the nozzles 75 spray water vertically onto the lifting and discharging mesh belt. For example, five spray pipes 74 are provided, with two spray pipes 74 near the discharge end of the lifting and discharging mesh belt connected to a fresh water pipe, and the remaining three spray pipes 74 connected to a return water pipe 71.

[0052] After being washed in the main water tank 12, the fruits and vegetables enter the lifting and discharge mesh belt. The spray pipe 74 further sprays and washes the fruits and vegetables to remove impurities and pesticide residues. The spray pipe 74 near the discharge end is connected to a new water pipeline to ensure the cleanliness of the fruits and vegetables.

[0053] According to some embodiments, such as Figure 2 and Figure 5 As shown, the aeration device includes an aeration pipe 83 located at the bottom of the main water tank 12. The aeration pipe 83 has an exhaust port (not shown in the figure), and is connected to a blower 81. Specifically, the blower 81 is connected to an air guide pipe 82, which extends from the outside of the main water tank 12 into its interior. The extension direction of the air guide pipe 82 within the main water tank 12 is perpendicular to the length extension direction of the main water tank 12. The aeration pipes 83 are arranged and connected to the air guide pipe 82, and are perpendicular to the air guide pipe 82. The aeration pipes 83 are located at the bottom of the main water tank 12. Combined with the exhaust port design, the blower 81 forces air in, creating a negative pressure zone and greatly improving the gas-liquid mixing efficiency. The aeration at the bottom of the main water tank 12 causes the water in the main water tank 12 to flow and tumble, improving the washing effect of fruits and vegetables.

[0054] like Figure 5As shown, a filter screen 91 is installed at the bottom of the main water tank 12, and the aerating tube 83 is located between the filter screen 91 and the bottom wall of the main water tank 12. Along the flow direction of the material in the main water tank 12, a first support rod 92 and a second support rod 93 are provided at the bottom of the main water tank 12. The filter screen 91 includes a first screen segment located between the feed end of the main water tank 12 and the first support rod 92, a second screen segment located between the first support rod 92 and the second support rod 93, a third screen segment and a fourth screen segment between the second support rod 93 and the lifting discharge mesh belt. A lifting step 94 is provided between the first screen segment and the second screen segment, abutting against the first support rod 92. The third screen segment extends downward from the second support rod 93 to the lower end of the lifting discharge mesh belt, and the fourth screen segment is located above the lifting discharge mesh belt and extends along the lifting discharge mesh belt. During the fruit and vegetable washing process, a backward force is exerted on the filter screen 91 at the bottom of the main water tank 12. To prevent the filter screen 91 from shifting backward and to extend its service life, the design at the lifting step 94 provides resistance to the backward movement of the first support rod 92, reducing the damage to the filter screen 91 caused by the water flow. The third and fourth mesh sections of the filter screen 91 form a V-shaped structure. After the water flows to the third mesh section, it flows down the slope of the V-shaped structure, carrying the washed fruits and vegetables through the V-structure to the feeding end of the lifting discharge conveyor belt.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A vegetable and fruit cleaning machine, comprising a frame (11) on which a main water tank (12) and a lifting discharge mesh belt are mounted, the feeding end of the lifting discharge mesh belt extending into the main water tank (12), and a spraying device being arranged above the lifting discharge mesh belt; a bubbling device being mounted at the bottom of the main water tank (12); characterized in that a raking assembly being mounted above the main water tank (12), the raking assembly comprising a raking frame (21) arranged above the main water tank (12), at least two parallel arranged crankshafts being rotatably mounted on the raking frame (21), and a plurality of raking rods (22) extending along the length direction of the main water tank (12) and being fixedly connected with the connecting rod necks of the crankshafts, a plurality of groups of material claw assemblies extending into the main water tank (12) being arranged on the raking rods (22); the material claw assembly comprising a feeding material claw assembly near the feeding end of the main water tank (12) and a discharging material claw assembly near the discharging end of the main water tank (12), at least one material guiding claw assembly being mounted on the raking rod (22) between the feeding material claw assembly and the discharging material claw assembly; the feeding material claw assembly comprising a mounting seat (41) fixedly mounted on the raking rod (22), at least one raking claw (43) extending towards the feeding end of the main water tank (12) and being bent at the end portion thereof towards the main water tank (12) being fixedly mounted on the mounting seat (41); the material guiding claw assembly comprising a mounting seat (41) fixedly mounted on the raking rod (22), a plurality of material guiding claws (42) being arranged and mounted on the mounting seat (41); the material guiding claw (42) comprising a main shaft portion (421) connected with the mounting seat (41), the other end of the main shaft portion (421) extending towards the main water tank (12) and being bent at the end portion thereof to form a bent portion (422) towards the feeding end of the main water tank (12), a claw reinforcing plate (423) being fixedly mounted between the bent portion (422) and the main shaft portion (421); the discharging material claw assembly comprising a mounting seat (41) fixedly mounted on the raking rod (22), a plurality of pushing claws (44) being arranged and mounted on the mounting seat (41), the end portion of the pushing claw (44) extending obliquely towards the discharging end of the main water tank (12).

2. The vegetable and fruit washing machine according to claim 1, characterized by: the crankshaft comprising a plurality of coaxially arranged main shaft necks (23), one crank (24) being fixedly mounted at the end portion of each adjacent main shaft neck (23), the free ends of two oppositely arranged cranks (24) extending towards one side and being rotatably mounted with a connecting rod neck, a connecting seat (26) being fixedly mounted on the connecting rod neck, the raking rod (22) being fixedly connected with the connecting seat (26).

3. The vegetable and fruit washing machine according to claim 1, characterized in that: under the driving of the crankshaft, the raking rod (22) drives the raking claw (43) and the material guiding claw (42) to move from the feeding end to the discharging end of the main water tank (12), forming a three-stage action chain of "pushing-dispersing-arranging" for the materials in the main water tank (12).

4. The vegetable and fruit washing machine according to claim 1, characterized in that: One end of the raking frame (21) is rotatably connected with the frame (11), and lifting driving devices are installed between the raking frame (21) and the frame (11). The lifting driving devices include a cylinder, a hydraulic rod (5) or a hydraulic cylinder, one end of which is hingedly connected with the raking frame (21) and the other end of which is hingedly connected with the frame (11).

5. The vegetable and fruit washing machine according to claim 1, characterized in that: The frame (11) is further provided with a sub-water tank (14) below the overflow of the main water tank (12), and water circulating devices are installed between the sub-water tank (14) and the main water tank (12). The water circulating devices include a backwater pipe (71) installed between the sub-water tank (14) and the main water tank (12), and a backwater pump (72) is installed on the backwater pipe (71); a plurality of water inlet pipes (73) with the same direction as the feeding direction are arranged at the feeding end of the main water tank (12), and the backwater pipe (71) is communicated with the water inlet pipes (73).

6. The vegetable and fruit washing machine according to claim 5, characterized in that: A screen (61) is installed at the overflow of the main water tank (12), and the screen (61) is obliquely arranged between the overflow and the sub-water tank (14); a splash-proof guide plate (62) matched with the screen (61) is further installed at the overflow of the main water tank (12), and the screen (61) and the splash-proof guide plate (62) are respectively arranged on both sides of the overflow.

7. The vegetable-fruiter washer according to claim 1, characterized in that: The spraying device includes a plurality of spraying pipes (74) distributed above the lifting discharge mesh belt, and a plurality of nozzles (75) facing the lifting discharge mesh belt are arranged on each spraying pipe (74).

8. The vegetable and fruit washing machine according to any one of claims 1 to 7, characterized in that: The bubbling device includes a bubbling pipe (83) arranged at the bottom of the main water tank (12), the bubbling pipe (83) is provided with an air vent, and a fan (81) is connected with the bubbling pipe (83).

Images