Cleaning equipment and cleaning method for removing pollutants on surfaces of fruits and vegetables

Abstract

The invention belongs to the technical field of fruit and vegetable cleaning, and particularly relates to fruit and vegetable surface pollutant removing and cleaning equipment and method.The fruit and vegetable surface pollutant removing and cleaning equipment comprises a cleaning tank body and an ultrasonic cleaning system installed on the surface of the cleaning tank body, the inner surface of the cleaning tank body is in transmission connection with a screen conveying belt, and the upper surface of a support of the cleaning tank body is fixedly connected with a portal frame; a displacement adjusting mechanism is arranged on the lower surface of the portal frame, and a rubbing mechanism is arranged on the lower surface of the displacement adjusting mechanism. According to the fruit and vegetable surface pollutant removing and cleaning equipment and the cleaning method, a rotating motor drives one driving plate to circumferentially rotate at a constant speed, and a connecting plate is connected with the other two driving plates, so that a treatment tank can be driven to rotate back and forth on the lower surface of a supporting panel to achieve the rubbing action; in the rubbing process, cleaning liquid in the treatment tank spirally enters cavities of rubbing palms and is spirally output from bubble holes to hit the surfaces of the fruits and vegetables, so that deep cleaning of the surfaces of the fruits and vegetables is completed, and silt is effectively stripped.

Description

Technical Field

[0001] The invention relates to the technical field of fruit and vegetable cleaning, and in particular to a cleaning device and a cleaning method for removing pollutants from the surfaces of fruits and vegetables. Background Art

[0002] With the development of science and technology and industry, various fruit and vegetable cleaning equipment have appeared on the market to remove dirt, pesticide residues, bacteria, etc. on the surface of fruits and vegetables. However, traditional fruit and vegetable cleaning technology generally has problems such as low efficiency, incomplete cleaning effect, cumbersome operation, and residual pollutants.

[0003] At present, traditional cleaning methods mainly rely on manual operation or simple water washing. These methods are usually unable to completely remove pesticide residues, mud and bacteria deep on the surface of fruits and vegetables, and may even cause some pollutants to remain on the surface of fruits and vegetables, thus affecting consumers' food safety. In addition, manual cleaning is not only labor-intensive, but also easily introduces secondary pollution during the cleaning process. In order to solve these problems, the industry continues to develop new cleaning technologies, such as: high-pressure water flow cleaning, bubble cleaning, ultrasonic cleaning, etc. Although these methods have improved the cleaning effect to a certain extent, they still have the following disadvantages: 1. Uneven cleaning: Due to the different shapes of fruits and vegetables, some fruits and vegetables fail to effectively contact the cleaning equipment, resulting in the surface mud and sand being peeled off; 2. Complex mechanical operation: Some existing cleaning equipment requires manual intervention, and the cleaning process is cumbersome and labor-intensive; Based on the above problems, it can be seen that although the fruit and vegetable cleaning equipment and methods in the prior art have solved the problem of removing surface pollutants to a certain extent, there are still many deficiencies, especially in terms of cleaning efficiency and ease of operation. Therefore, the present invention solves the deficiencies of the above technical problems. Summary of the invention

[0004] Based on the above existing technical problems, the present invention proposes a cleaning device and a cleaning method for removing pollutants from the surfaces of fruits and vegetables.

[0005] The present invention provides a cleaning device for removing pollutants from the surfaces of fruits and vegetables, comprising a cleaning trough body and an ultrasonic cleaning system installed on the surface of the cleaning trough body, wherein the inner surface of the cleaning trough body is transmission-connected with a screen conveyor belt, the upper surface of a conveying tail end bracket of the cleaning trough body is fixedly connected with a protective shell, the inner top surface of the protective shell is fixedly connected with an ultraviolet sterilization lamp, the upper surface of the bracket of the cleaning trough body is fixedly connected with a gantry, the lower surface of the gantry is provided with a displacement adjustment mechanism, and the lower surface of the displacement adjustment mechanism is provided with a kneading mechanism.

[0006] The displacement adjustment mechanism performs axial and radial horizontal movement above the cleaning tank body, so that the fruits and vegetables in the cleaning tank body are cleaned.

[0007] The kneading mechanism moves along with the displacement adjustment mechanism, so that it extends into the cleaning liquid to press and rub the fruits and vegetables for cleaning.

[0008] Preferably, the inner surfaces of the front and rear conveying ends of the cleaning trough are rotatably connected to brush rollers via bearings, the outer surfaces of the bristles of the brush rollers are in sliding contact with the surface of the screen conveyor belt, and the outer surfaces of the roller shafts of the two brush rollers are provided with pulley transmission assembly housings.

[0009] Through the above technical scheme, fruits and vegetables are transported and cleaned on the surface of the screen conveyor belt in the cleaning tank body. In order to effectively clean the mud and sand on the surface of the fruits and vegetables, the pulley transmission assembly housing is provided with a pulley sleeved on the outer surface of the roller shaft of the two brush rollers, a transmission belt connecting the two pulleys, and a transmission motor driving one of the pulleys to rotate. Then, the fruits and vegetables are initially brushed by the rotating brush roller at the front end of the conveyor to clean the mud and sand on the surface, and the rotating brush roller at the rear can make the fruits and vegetables be flipped and taken away from the screen conveyor belt, that is, the gap of the shaking of fruits and vegetables is increased, so that the mud and sand flow to the inner bottom wall of the cleaning tank body under the vibration of the ultrasonic cleaning system, thereby avoiding the mud and sand adhering to the surface of the fruits and vegetables for transmission together.

[0010] Preferably, the lower surfaces of both ends of the gantry are fixedly connected with supporting ear plates, and the lower surfaces of the two supporting ear plates are fixedly installed with high-pressure water pipes through connecting blocks. The lower surfaces of the high-pressure water pipes are distributed in a linear array and fixedly connected with jet nozzles. A circulation pipe is fixedly installed on the inner surface of the gantry, and a high-pressure water pump is fixedly installed on the outer surface of the cleaning tank body. The water outlet end of the high-pressure water pump is fixedly connected to one end of the high-pressure water pipe through a connecting water pipe.

[0011] Through the above technical solution, in order to remove the stubborn mud and sand on the surface of fruits and vegetables, two groups of jet nozzles are set at both ends of the gantry, and a high-pressure water pump is used to provide high-pressure water flow in the high-pressure water pipe, so that the jet nozzle can effectively remove the stubborn mud and sand, surface dirt and other solid pollutants through the high-pressure water flow, ensuring the cleanliness of the surface of fruits and vegetables.

[0012] Preferably, the displacement adjustment mechanism includes an adjusting screw rotatably connected to the surface of the gantry through a bearing, the two adjusting screws are arranged opposite to each other, the inner surface of the support ear plate is fixedly connected to a supporting slide rod, the outer surface of the support slide rod is slidably sleeved with a supporting surface block, the upper surface of the support surface block is rotatably connected to a transmission shaft, the outer surface of the upper end of the transmission shaft is fixedly sleeved with a pinching gear, and the pinching gears are meshed with the two adjusting screws.

[0013] Through the above technical scheme, in order to make the kneading mechanism move with the conveyed fruits and vegetables to complete the contact kneading of the fruits and vegetables so that the surface pollutants are removed, when the rotation directions of the two adjusting screws are the same, the clamping gear can be squeezed to move horizontally, thereby driving the supporting surface block to move horizontally radially on the outer surface of the supporting slide rod, so that it drives the kneading mechanism to move horizontally and increase the area of ​​kneading fruits and vegetables.

[0014] Preferably, the displacement adjustment mechanism also includes a driving motor fixedly connected to the surface of one side of the supporting ear plates at both ends, the outer surface of the output shaft of the driving motor is fixedly connected to the outer surface of the corresponding adjusting screw through a coupling, and the outer surface of the lower end of the transmission shaft is fixedly sleeved with a linkage gear, and the outer surface of the linkage gear is meshed with a rack rod.

[0015] Through the above technical scheme, in order to control the rotation of the adjusting screw, the driving motors drive their respective adjusting screws to rotate respectively. When the two driving motors control the adjusting screws to rotate in the same direction at the same time, horizontal radial adjustment can be achieved. In order to make the horizontal radial adjustment structure realize horizontal axial adjustment, the driving motor controls the two adjusting screws to rotate in different directions, which can realize the control of the rotation of the meshing clamping gear, and then realize the linkage gear rotation through the connection of the transmission shaft, and then realize the horizontal axial movement of the rack rod, thereby realizing the horizontal axial movement of the kneading mechanism.

[0016] Preferably, the displacement adjustment mechanism also includes a support panel fixedly connected to the outer surface of the rack rod, the inner surface of the support panel is fixedly connected to a connecting slide rod, one end of the lower surface of the support surface block is fixedly connected to a guide slider, and the guide slider is slidably sleeved on the outer surface of the connecting slide rod.

[0017] Through the above technical scheme, in order to make the linkage gear rotate to realize the axial movement of the rack rod and then drive the kneading mechanism to move synchronously, the kneading mechanism is arranged on the lower surface of the support panel, and the rack rod drives the connection to the support panel to realize axial movement. In order to realize the radial movement of the support panel along with the support surface block, the support panel is indirectly connected to the support surface block through the guide slider, thereby realizing the radial movement of the kneading mechanism.

[0018] Preferably, a guide block is fixedly connected to the other end of the lower surface of the support surface block, and the outer surface of the guide block is slidably engaged with the outer surface of the rack rod. The upper surface of the support panel is symmetrically provided with support grooves, and the lower surface of the guide slider and the lower surface of the guide block are fixedly connected with a balancing slider, and the outer surface of the balancing slider is slidably engaged with the inner wall of the support groove.

[0019] Through the above technical scheme, in order to balance the force of the radial movement of the support surface block and thus realize its horizontal movement, when the support panel moves, the connecting slide rod is extended and retracted on the inner surface of the guide slider, and the rack rod is slid and retracted on the inner surface of the guide block, so that the force at both ends of the support panel is balanced. In order to achieve a stable connection between the support surface block and the support panel and guide the radial movement of the support panel, the balancing slider moves horizontally in the support slide groove, thereby increasing the connectivity between the guide slider and the guide block.

[0020] Preferably, the kneading mechanism includes a processing tank arranged on the lower surface of the supporting panel, a motor block is fixedly installed on the upper surface of the processing tank, the upper surface of the motor block is slidably connected to the lower surface of the supporting panel, the lower surface of the processing tank is distributed in a circular array and is fixedly connected to a kneading palm with an internal cavity, a plurality of bubble holes are penetrated through the surface of the kneading palm, the inner wall of the processing tank is rotatably connected to a spiral stirring rod, the upper surface of the spiral stirring rod is fixedly connected to the outer surface of the output shaft of the motor block through a coupling, and the outer surface of the processing tank is respectively fixedly connected to a water inlet pipe and a liquid level sensor.

[0021] Through the above technical scheme, in order to deeply clean fruits and vegetables, the gantry can be set in a telescopic style, so that the rubbing palm can be extended into the cleaning liquid to contact the fruits and vegetables. The processing tank is filled with cleaning liquid. As the motor in the motor block drives the spiral stirring rod to stir the cleaning liquid in the processing tank, the cleaning liquid enters the cavity of the rubbing palm in a spiral state, and is spirally output from the bubble hole to hit the surface of the fruits and vegetables. With the radial and axial movement of the rubbing palm, the deep cleaning of the surface of the fruits and vegetables can be achieved. The water level in the processing tank is monitored by a liquid level sensor, and the cleaning liquid is replenished in the processing tank through a water inlet pipe. The water inlet pipe has a certain length to facilitate the movement of the processing tank.

[0022] Preferably, the kneading mechanism also includes connecting plates distributed in a circular array and fixedly connected to the outer surface of the processing tank, the free end surface of the connecting plate is hinged with a driving plate, the driving plate is rotatably connected to the lower surface of the supporting panel through a connecting rotating block, the upper surface of the supporting panel is fixedly connected to a rotating motor, and the outer surface of the output shaft of the rotating motor is fixedly connected to the surface of one of the driving plates.

[0023] Through the above technical scheme, in order to enable the rubbing palm to complete the pressing and rubbing action on the fruits and vegetables, when the rotating motor drives one of the driving plates to rotate in a uniform circumferential direction, the connection between the connecting plate and the other two driving plates can drive the processing tank to rotate back and forth on the lower surface of the supporting panel to achieve the kneading action, and in the process of kneading, the rubbing palm is extended into the fruits and vegetables, so that the liquid sprayed from the bubble hole hits the surface of the fruits and vegetables to achieve better cleaning.

[0024] The present invention provides a cleaning method for removing pollutants from the surface of fruits and vegetables by a cleaning device, comprising the following steps: S1. Place fruits and vegetables inside the cleaning tank and transport them forward along the screen conveyor belt. In order to effectively clean the mud and sand on the surface of fruits and vegetables, the pulley transmission component housing drives the brush roller to rotate. The rotating brush roller at the front end of the conveyor initially brushes the surface mud and sand of the fruits and vegetables. Then, the high-pressure water pump provides high-pressure water flow in the high-pressure water pipe, so that the jet nozzle effectively removes stubborn mud and sand, surface dirt and other solid pollutants through the high-pressure water flow.

[0025] S2. When the fruits and vegetables are transported to the bottom of the gantry, the rubbing palm is inside the fruits and vegetables, and the rotating motor drives one of the driving plates to rotate in a uniform circumferential direction. Through the connection between the connecting plate and the other two driving plates, the processing tank can be driven to rotate back and forth on the lower surface of the supporting panel to achieve the rubbing action.

[0026] S3. During the kneading process, the processing tank is filled with cleaning liquid. As the motor in the motor block drives the spiral stirring rod to stir the cleaning liquid in the processing tank, the cleaning liquid enters the cavity of the kneading palm in a spiral state, and is spirally output from the bubble holes to hit the surface of the fruits and vegetables, so that the surface of the fruits and vegetables is deeply cleaned.

[0027] S4. In order to increase the effective area of ​​the rubbing palm, during the operation of the rubbing palm, the driving motors respectively drive their respective adjusting screws to rotate. When the two driving motors simultaneously control the adjusting screws to rotate in the same direction, the clamping gear can be squeezed to move horizontally, thereby driving the supporting surface block to move horizontally and radially on the outer surface of the supporting slide bar. The connection between the guide slider and the guide block can drive the supporting panel to move horizontally and radially, thereby realizing the radial horizontal movement of the rubbing palm.

[0028] S5. When the driving motor controls the two adjusting screws to rotate in different directions, the meshing pinching gear can be controlled to rotate, and then the linkage gear can be rotated through the connection of the transmission shaft, and then the horizontal axial movement of the rack rod can be achieved. The rack rod drives the connection to the support panel to achieve axial movement. When the support panel moves, the connecting slide rod expands and contracts on the inner surface of the guide slider, and the rack rod slides and expands on the inner surface of the guide block, so that the forces at both ends of the support panel are balanced, thereby achieving the axial movement of the rubbing palm, so that the rubbing palm increases its rubbing area of ​​fruits and vegetables.

[0029] S6. The brush roller rotating at the rear can flip the fruits and vegetables away from the screen conveyor belt, that is, increase the gap between the fruits and vegetables and make the mud and sand flow to the inner bottom wall of the cleaning tank under the vibration of the ultrasonic cleaning system, so as to avoid the mud and sand adhering to the surface of the fruits and vegetables and being transported together. The cleaned fruits and vegetables are irradiated and sterilized by the ultraviolet sterilization lamp when they are transmitted to the bottom of the protective shell, and then discharged from the cleaning tank for the next step of processing.

[0030] The beneficial effects of the present invention are: 1. By setting a displacement adjustment mechanism, the adjustment screws can be moved horizontally in the axial and radial directions above the cleaning tank, thereby increasing the effective area for fruit and vegetable cleaning. During the adjustment process, when the two driving motors simultaneously control the adjustment screws to rotate in the same direction, the pinching gear can be squeezed to move horizontally, thereby driving the support surface block to move horizontally and radially on the outer surface of the support slide bar. When the driving motor controls the two adjustment screws to rotate in different directions, the meshing pinching gear can be controlled to rotate, and then the linkage gear rotation is realized through the connection of the transmission shaft, and then the horizontal axial movement of the rack rod is realized. The rack rod drives the connection on the support panel to realize axial movement, thereby realizing the movement of the platform to any position with a simple structure, avoiding the cumbersome cleaning process and high labor intensity.

[0031] 2. By setting up a rubbing mechanism, the kneading mechanism can be extended into the cleaning liquid to press and rub the fruits and vegetables for cleaning. During the adjustment process, the rubbing palm is inside the fruits and vegetables, and the rotating motor drives one of the driving plates to rotate in a uniform circumferential direction. Through the connection between the connecting plate and the other two driving plates, the processing tank can be driven to rotate back and forth on the lower surface of the supporting panel to achieve the kneading action. In the kneading process, the cleaning liquid in the processing tank enters the cavity of the rubbing palm in a spiral state, and is spirally output from the bubble hole to hit the surface of the fruits and vegetables, so that it completes the deep cleaning of the surface of the fruits and vegetables, so that the mud and sand are effectively peeled off. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a device and method for removing pollutants from the surface of fruits and vegetables proposed by the present invention; Figure 2 A three-dimensional diagram of the screen conveyor structure of a device and method for removing pollutants from the surface of fruits and vegetables proposed by the present invention; Figure 3 A three-dimensional diagram of the gantry structure of a fruit and vegetable surface pollutant removal and cleaning device and a cleaning method proposed by the present invention; Figure 4 A three-dimensional diagram of the structure of a jet nozzle of a fruit and vegetable surface pollutant removal and cleaning device and a cleaning method proposed by the present invention; Figure 5 A three-dimensional diagram of the structure of an adjusting screw of a fruit and vegetable surface pollutant removal and cleaning device and a cleaning method proposed by the present invention; Figure 6 A three-dimensional diagram of the support surface block structure of a fruit and vegetable surface pollutant removal and cleaning device and cleaning method proposed by the present invention; Figure 7 A three-dimensional diagram of the linkage gear structure of a fruit and vegetable surface pollutant removal and cleaning device and a cleaning method proposed by the present invention; Figure 8 A three-dimensional diagram of the rack rod structure of a fruit and vegetable surface pollutant removal and cleaning device and cleaning method proposed by the present invention; Fig. 9 A three-dimensional diagram of the structure of a treatment tank for a device and method for removing pollutants from the surface of fruits and vegetables proposed by the present invention; Fig.10 A three-dimensional diagram of the structure of a liquid level sensor for a fruit and vegetable surface pollutant removal and cleaning device and a cleaning method proposed by the present invention; Fig.11 A three-dimensional diagram of the spiral stirring rod structure of a fruit and vegetable surface pollutant removal and cleaning device and cleaning method proposed by the present invention; Fig.12 This is a three-dimensional diagram of the rubbing palm structure of a fruit and vegetable surface pollutant removal and cleaning device and cleaning method proposed by the present invention.

[0033] In the figure: 1. cleaning tank; 11. brush roller; 12. pulley drive assembly housing; 2. ultrasonic cleaning system; 3. screen conveyor belt; 4. protective housing; 41. ultraviolet germicidal lamp; 5. gantry; 51. support ear plate; 52. high-pressure water pipe; 53. jet nozzle; 54. circulation pipe; 55. high-pressure water pump; 6. displacement adjustment mechanism; 61. adjustment screw; 62. support slide rod; 63. support surface block; 64. transmission shaft; 65. pinch teeth Wheel; 66, driving motor; 67, linkage gear; 68, rack rod; 69, supporting panel; 70, connecting slide rod; 71, guide slide block; 72, guide block; 73, supporting slide groove; 74, balancing slide block; 8, kneading mechanism; 81, processing tank; 82, motor block; 83, kneading palm; 84, bubble hole; 85, spiral stirring rod; 86, water inlet pipe; 87, liquid level sensor; 88, connecting plate; 89, driving plate; 90, rotating motor. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figure 1-Figure 12 A cleaning device for removing pollutants from the surface of fruits and vegetables comprises a cleaning trough body 1 and an ultrasonic cleaning system 2 installed on the surface of the cleaning trough body 1, the inner surface of the cleaning trough body 1 is connected to a screen conveyor belt 3, the upper surface of the conveying tail end bracket of the cleaning trough body 1 is fixedly connected to a protective shell 4, the inner top surface of the protective shell 4 is fixedly connected to an ultraviolet sterilization lamp 41, the upper surface of the bracket of the cleaning trough body 1 is fixedly connected to a gantry 5, the lower surface of the gantry 5 is provided with a displacement adjustment mechanism 6, and the lower surface of the displacement adjustment mechanism 6 is provided with a kneading mechanism 8.

[0036] The fruits and vegetables are transported and cleaned on the surface of the screen conveyor belt 3 in the cleaning tank body 1. In order to effectively clean the mud and sand on the surface of the fruits and vegetables, the inner surface of the front and rear ends of the cleaning tank body 1 is rotatably connected with a brush roller 11 through a bearing. The outer surface of the bristles of the brush roller 11 is in sliding contact with the surface of the screen conveyor belt 3. The outer surface of the roller shaft of the two brush rollers 11 is provided with a pulley transmission component housing 12. The pulley transmission component housing 12 is provided with a pulley sleeved on the outer surface of the roller shaft of the two brush rollers 11, a transmission belt that connects the two pulleys, and a transmission motor that drives one of the pulleys to rotate. Then, the fruits and vegetables are initially brushed with mud and sand on the surface by the rotating brush roller 11 at the front end of the conveyor, and the rear rotating brush roller 11 can make the fruits and vegetables be flipped and taken away from the screen conveyor belt 3, that is, the gap of the shaking of the fruits and vegetables is increased, so that the mud and sand flow to the inner bottom wall of the cleaning tank body 1 under the vibration of the ultrasonic cleaning system 2, thereby preventing the mud and sand from adhering to the surface of the fruits and vegetables and being transported together.

[0037] In order to remove the stubborn mud and sand on the surface of fruits and vegetables, the lower surfaces of both ends of the gantry 5 are fixedly connected with supporting ear plates 51, and the lower surfaces of the two supporting ear plates 51 are fixedly installed with high-pressure water pipes 52 through connecting blocks. The lower surfaces of the high-pressure water pipes 52 are distributed in a linear array and are fixedly connected with jet nozzles 53. A circulation pipe 54 is fixedly installed on the inner surface of the gantry 5, and a high-pressure water pump 55 is fixedly installed on the outer surface of the cleaning tank body 1. The water outlet end of the high-pressure water pump 55 is fixedly connected with one end of the high-pressure water pipe 52 through a connecting water pipe. The high-pressure water pump 55 provides high-pressure water flow in the high-pressure water pipe 52, so that the jet nozzles 53 can effectively remove stubborn mud and sand, surface dirt and other solid pollutants through the high-pressure water flow, thereby ensuring the cleanliness of the surface of fruits and vegetables.

[0038] The displacement adjustment mechanism 6 moves horizontally in the axial and radial directions above the cleaning tank body 1 , so as to clean the fruits and vegetables in the cleaning tank body 1 .

[0039] In order to enable the kneading mechanism 8 to move with the conveyed fruits and vegetables and complete the contact kneading of the fruits and vegetables so that the surface pollutants are removed, the displacement adjustment mechanism 6 includes an adjusting screw 61 rotatably connected to the surface of the gantry 5 through a bearing, and the two adjusting screws 61 are arranged opposite to each other. The inner surface of the support ear plate 51 is fixedly connected to the support slide bar 62, and the outer surface of the support slide bar 62 is slidably sleeved with a support surface block 63, and the upper surface of the support surface block 63 is rotatably connected to the transmission shaft 64, and the upper end outer surface of the transmission shaft 64 is fixedly sleeved with a pinching gear 65, and the pinching gear 65 is meshed with the two adjusting screws 61. When the two adjusting screws 61 rotate in the same direction, the pinching gear 65 can be squeezed to move horizontally, thereby driving the support surface block 63 to move horizontally and radially on the outer surface of the support slide bar 62, so that it drives the kneading mechanism 8 to move horizontally and increase the area of ​​kneading fruits and vegetables.

[0040] In order to control the rotation of the adjusting screw 61, the displacement adjustment mechanism 6 also includes a driving motor 66 on the surface of one side of the ear plates 51 at both ends. The outer surface of the output shaft of the driving motor 66 is fixedly connected to the outer surface of the corresponding adjusting screw 61 through a coupling. The driving motors 66 respectively drive their respective adjusting screws 61 to rotate. When the two driving motors 66 simultaneously control the adjusting screws 61 to rotate in the same direction, horizontal radial adjustment can be achieved. In order to enable the horizontal radial adjustment structure to achieve horizontal axial adjustment, a linkage gear 67 is fixedly sleeved on the outer surface of the lower end of the transmission shaft 64. The outer surface of the linkage gear 67 is meshed with a rack rod 68. When the driving motor 66 controls the two adjusting screws 61 to rotate in different directions, the meshing clamping gear 65 can be controlled to rotate, and then the linkage gear 67 is rotated through the connection of the transmission shaft 64, and then the horizontal axial movement of the rack rod 68 is achieved, thereby achieving the horizontal axial movement of the kneading mechanism 8.

[0041] In order to make the linkage gear 67 rotate to realize the axial movement of the rack rod 68 and then drive the kneading mechanism 8 to move synchronously, the displacement adjustment mechanism 6 also includes a support panel 69 fixedly connected to the outer surface of the rack rod 68, and the inner surface of the support panel 69 is fixedly connected to a connecting slide rod 70. The kneading mechanism 8 is arranged on the lower surface of the support panel 69, and the rack rod 68 drives the connection to the support panel 69 to realize axial movement. In order to realize the radial movement of the support panel 69 along with the support surface block 63, a guide slider 71 is fixedly connected to one end of the lower surface of the support surface block 63. The guide slider 71 is slidably sleeved on the outer surface of the connecting slide rod 70, and the support panel 69 is indirectly connected to the support surface block 63 through the guide slider 71, thereby realizing the radial movement of the kneading mechanism 8.

[0042] In order to balance the force of the radial movement of the support surface block 63 and thus realize its horizontal movement, a guide block 72 is fixedly connected to the other end of the lower surface of the support surface block 63, and the outer surface of the guide block 72 is slidably engaged with the outer surface of the rack rod 68. When the support panel 69 moves, the connecting slide bar 70 is retracted and extended on the inner surface of the guide slide block 71, and the rack rod 68 is slidably retracted and extended on the inner surface of the guide block 72, so that the force at both ends of the support panel 69 is balanced. In order to achieve a stable connection between the support surface block 63 and the support panel 69 and guide the radial movement of the support panel 69, the upper surface of the support panel 69 is symmetrically provided with support grooves 73, and the lower surface of the guide slide block 71 and the lower surface of the guide block 72 are fixedly connected with a balancing slide block 74, and the outer surface of the balancing slide block 74 is slidably engaged with the inner wall of the support groove 73, and the balancing slide block 74 moves horizontally in the support groove 73, thereby increasing the connectivity between the guide slide block 71 and the guide block 72.

[0043] By setting up the displacement adjustment mechanism 6, it can make axial and radial horizontal movements above the cleaning tank body 1, thereby increasing the effective area for fruit and vegetable cleaning. During the adjustment process, when the two driving motors 66 simultaneously control the adjusting screws 61 to rotate in the same direction, the squeezing gear 65 can be squeezed to move horizontally, thereby driving the supporting surface block 63 to move horizontally and radially on the outer surface of the supporting slide bar 62. When the driving motor 66 controls the two adjusting screws 61 to rotate in different directions, the meshing squeezing gear 65 can be controlled to rotate, and then the linkage gear 67 can be rotated through the connection of the transmission shaft 64, and then the horizontal axial movement of the rack rod 68 can be realized. The rack rod 68 drives the connection to the support panel 69 to realize axial movement, thereby realizing the movement of the platform to any position with a simple structure, avoiding the cumbersome cleaning process and high labor intensity.

[0044] The kneading mechanism 8 moves along with the displacement adjustment mechanism 6 so as to extend into the cleaning liquid to press and rub the fruits and vegetables for cleaning.

[0045] In order to deeply clean the fruits and vegetables, the kneading mechanism 8 includes a processing tank 81 arranged on the lower surface of the support panel 69, a motor block 82 is fixedly installed on the upper surface of the processing tank 81, and the upper surface of the motor block 82 is slidably connected to the lower surface of the support panel 69. The lower surface of the processing tank 81 is distributed in an annular array and is fixedly connected to a kneading palm 83 with an internal cavity. A plurality of bubble holes 84 are opened through the surface of the kneading palm 83. The inner wall of the processing tank 81 is rotatably connected to a spiral stirring rod 85. The upper surface of the spiral stirring rod 85 is fixedly connected to the outer surface of the output shaft of the motor block 82 through a coupling. The outer surface of the processing tank 81 is respectively fixedly connected to a water inlet pipe 86 and a liquid level sensor 87, the gantry 5 can be set to a telescopic style, so that the rubbing palm 83 extends into the cleaning liquid and contacts the fruits and vegetables. The processing tank 81 is filled with cleaning liquid. As the motor in the motor block 82 drives the spiral stirring rod 85 to stir the cleaning liquid in the processing tank 81, the cleaning liquid enters the cavity of the rubbing palm 83 in a spiral state, and is spirally output from the bubble hole 84 to hit the surface of the fruits and vegetables. As the rubbing palm 83 moves radially and axially, the surface of the fruits and vegetables can be deeply cleaned. The water level in the processing tank 81 is monitored by the liquid level sensor 87, and the cleaning liquid is replenished in the processing tank 81 through the water inlet pipe 86. The water inlet pipe 86 has a certain length to facilitate the movement of the processing tank 81.

[0046] In order to enable the rubbing palm 83 to press and rub the fruits and vegetables, the rubbing mechanism 8 also includes connecting plates 88 distributed in a circular array and fixedly connected to the outer surface of the processing tank 81. The free end surface of the connecting plate 88 is hinged with a driving plate 89. The driving plate 89 is rotatably connected to the lower surface of the supporting panel 69 through a connecting rotating block. The upper surface of the supporting panel 69 is fixedly connected with a rotating motor 90. The outer surface of the output shaft of the rotating motor 90 is fixedly connected to the surface of one of the driving plates 89. When the rotating motor 90 drives one of the driving plates 89 to rotate in a uniform circumferential direction, the connection between the connecting plate 88 and the other two driving plates 89 can drive the processing tank 81 to rotate back and forth on the lower surface of the supporting panel 69 to achieve the rubbing action. In the process of rubbing, the rubbing palm 83 extends into the fruits and vegetables, so that the liquid sprayed from the bubble hole 84 hits the surface of the fruits and vegetables to achieve better cleaning.

[0047] By setting up the kneading mechanism 8, the kneading mechanism 8 can be extended into the cleaning liquid to press, knead and clean the fruits and vegetables. During the adjustment process, the kneading palm 83 is inside the fruits and vegetables, and the rotating motor 90 drives one of the driving plates 89 to rotate in a uniform circumferential direction. Through the connection between the connecting plate 88 and the other two driving plates 89, the processing tank 81 can be driven to rotate back and forth on the lower surface of the supporting panel 69 to achieve the kneading action. In the kneading process, the cleaning liquid in the processing tank 81 enters the cavity of the kneading palm 83 in a spiral state, and is spirally output from the bubble hole 84 to hit the surface of the fruits and vegetables, so that it completes the deep cleaning of the surface of the fruits and vegetables, so that the mud and sand are effectively peeled off.

[0048] Reference Figure 1-Figure 12 , a cleaning method for removing pollutants from the surface of fruits and vegetables by a cleaning device, comprising the following steps: S1. Fruits and vegetables are placed inside the cleaning tank 1 and conveyed forward along the screen conveyor belt 3. In order to effectively clean the mud and sand on the surface of the fruits and vegetables, the pulley transmission component housing 12 drives the brush roller 11 to rotate. The rotating brush roller 11 initially brushes the surface mud and sand of the fruits and vegetables at the front end of the conveyor. Then, the high-pressure water pump 55 provides high-pressure water flow in the high-pressure water pipe 52, so that the jet nozzle 53 effectively removes stubborn mud and sand, surface dirt and other solid pollutants through the high-pressure water flow.

[0049] S2. When the fruits and vegetables are transported to the bottom of the gantry 5, the kneading palm 83 is inside the fruits and vegetables, and the rotating motor 90 drives one of the driving plates 89 to rotate in a uniform circumferential direction. Through the connection between the connecting plate 88 and the other two driving plates 89, the processing tank 81 can be driven to rotate back and forth on the lower surface of the supporting panel 69 to achieve the kneading action.

[0050] S3. During the kneading process, the processing tank 81 is filled with cleaning liquid. As the motor in the motor block 82 drives the spiral stirring rod 85 to stir the cleaning liquid in the processing tank 81, the cleaning liquid enters the cavity of the kneading palm 83 in a spiral state, and is spirally output from the bubble hole 84 to hit the surface of the fruits and vegetables, so that the surface of the fruits and vegetables is deeply cleaned.

[0051] S4. In order to increase the effective area of ​​the rubbing palm 83, during the operation of the rubbing palm 83, the driving motors 66 respectively drive the respective adjusting screws 61 to rotate. When the two driving motors 66 simultaneously control the adjusting screws 61 to rotate in the same direction, the clamping gear 65 can be squeezed to move horizontally, thereby driving the supporting surface block 63 to move horizontally and radially on the outer surface of the supporting slide bar 62. The connection between the guide slider 71 and the guide block 72 can drive the supporting panel 69 to move horizontally and radially, thereby realizing the radial horizontal movement of the rubbing palm 83.

[0052] S5. When the driving motor 66 controls the two adjusting screws 61 to rotate in different directions, the meshing pinching gear 65 can be controlled to rotate, and then the linkage gear 67 can be rotated through the connection of the transmission shaft 64, and then the horizontal axial movement of the rack rod 68 can be achieved. The rack rod 68 drives the connection to the support panel 69 to achieve axial movement. When the support panel 69 moves, the connecting slide rod 70 extends and retracts on the inner surface of the guide slide block 71, and the rack rod 68 slides and retracts on the inner surface of the guide block 72, so that the forces at both ends of the support panel 69 are balanced, thereby achieving the axial movement of the rubbing palm 83, so that the rubbing palm 83 increases its rubbing area of ​​fruits and vegetables.

[0053] S6. The brush roller 11 rotating at the rear can make the fruits and vegetables be turned over and taken away from the screen conveyor belt 3, that is, the gap between the fruits and vegetables is increased, so that the mud and sand flow to the inner bottom wall of the cleaning tank 1 under the vibration of the ultrasonic cleaning system 2, thereby preventing the mud and sand from adhering to the surface of the fruits and vegetables and being transported together. When the cleaned fruits and vegetables are transmitted to the bottom of the protective shell 4, they are irradiated and sterilized by the ultraviolet sterilization lamp 41, and then discharged from the cleaning tank 1 for the next step of processing.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cleaning device for removing pollutants from the surface of fruits and vegetables, comprising a cleaning tank (1) and an ultrasonic cleaning system (2) installed on the surface of the cleaning tank (1), characterized in that: The inner surface of the cleaning trough (1) is connected to a screen conveyor belt (3) in a transmission manner, the upper surface of the conveying tail end bracket of the cleaning trough (1) is fixedly connected to a protective shell (4), the inner top surface of the protective shell (4) is fixedly connected to an ultraviolet sterilization lamp (41), the upper surface of the bracket of the cleaning trough (1) is fixedly connected to a gantry (5), the lower surface of the gantry (5) is provided with a displacement adjustment mechanism (6), and the lower surface of the displacement adjustment mechanism (6) is provided with a kneading mechanism (8); The displacement adjustment mechanism (6) moves horizontally in the axial and radial directions above the cleaning tank (1), so as to clean the fruits and vegetables in the cleaning tank (1); The kneading mechanism (8) moves along with the displacement adjustment mechanism (6), so that it extends into the cleaning liquid to press and rub the fruits and vegetables for cleaning.

2. The device for removing pollutants from the surface of fruits and vegetables according to claim 1, characterized in that: The inner surface of the front and rear conveying ends of the cleaning tank body (1) is rotatably connected to a brush roller (11) via a bearing, the outer surface of the bristles of the brush roller (11) is in sliding contact with the surface of the screen conveyor belt (3), and the outer surfaces of the roller shafts of the two brush rollers (11) are provided with a pulley transmission assembly housing (12).

3. The device for removing pollutants from the surface of fruits and vegetables according to claim 2, characterized in that: The lower surfaces of both ends of the gantry (5) are fixedly connected to support ear plates (51), and the lower surfaces of the two support ear plates (51) are fixedly mounted with high-pressure water pipes (52) via connecting blocks. The lower surfaces of the high-pressure water pipes (52) are fixedly connected to jet nozzles (53) distributed in a linear array. A circulation pipe (54) is fixedly mounted on the inner surface of the gantry (5), and a high-pressure water pump (55) is fixedly mounted on the outer surface of the cleaning tank body (1). The water outlet end of the high-pressure water pump (55) is fixedly connected to one end of the high-pressure water pipe (52) via a connecting water pipe.

4. The device for removing pollutants from the surface of fruits and vegetables according to claim 3, characterized in that: The displacement adjustment mechanism (6) comprises an adjustment screw (61) rotatably connected to the surface of the gantry (5) via a bearing, the two adjustment screws (61) being arranged opposite to each other, the inner surface of the support ear plate (51) being fixedly connected to a support slide bar (62), the outer surface of the support slide bar (62) being slidably sleeved with a support surface block (63), the upper surface of the support surface block (63) being rotatably connected to a transmission shaft (64), the upper end outer surface of the transmission shaft (64) being fixedly sleeved with a pinching gear (65), and the pinching gear (65) being meshed with the two adjustment screws (61).

5. The device for removing pollutants from the surface of fruits and vegetables according to claim 4, characterized in that: The displacement adjustment mechanism (6) further comprises a driving motor (66) fixedly connected to one side surface of the supporting ear plates (51) at both ends, the outer surface of the output shaft of the driving motor (66) being fixedly connected to the outer surface of the corresponding adjusting screw (61) via a coupling, the outer surface of the lower end of the transmission shaft (64) being fixedly sleeved with a linkage gear (67), the outer surface of the linkage gear (67) being meshed with a rack rod (68).

6. The device for removing pollutants from the surface of fruits and vegetables according to claim 5, characterized in that: The displacement adjustment mechanism (6) further comprises a support panel (69) fixedly connected to the outer surface of the rack rod (68); a connecting slide rod (70) is fixedly connected to the inner surface of the support panel (69); a guide slide rod (71) is fixedly connected to one end of the lower surface of the support surface block (63); and the guide slide rod (71) is slidably sleeved on the outer surface of the connecting slide rod (70).

7. The device for removing pollutants from the surface of fruits and vegetables according to claim 6, characterized in that: The other end of the lower surface of the support surface block (63) is fixedly connected to a guide block (72), the outer surface of the guide block (72) is slidably engaged with the outer surface of the rack rod (68), the upper surface of the support panel (69) is symmetrically provided with support slide grooves (73), the lower surface of the guide slide block (71) and the lower surface of the guide block (72) are fixedly connected to a balancing slide block (74), and the outer surface of the balancing slide block (74) is slidably engaged with the inner wall of the support slide groove (73).

8. The device for removing pollutants from the surface of fruits and vegetables according to claim 7, characterized in that: The kneading mechanism (8) comprises a processing tank (81) arranged on the lower surface of the support panel (69); a motor block (82) is fixedly mounted on the upper surface of the processing tank (81); the upper surface of the motor block (82) is slidably connected to the lower surface of the support panel (69); the lower surface of the processing tank (81) is fixedly connected to kneading palms (83) with cavities formed inside, which are distributed in an annular array; a plurality of bubble holes (84) are penetrated through the surface of the kneading palms (83); the inner wall of the processing tank (81) is rotatably connected to a spiral stirring rod (85); the upper surface of the spiral stirring rod (85) is fixedly connected to the outer surface of the output shaft of the motor block (82) via a coupling; the outer surface of the processing tank (81) is respectively fixedly connected to a water inlet pipe (86) and a liquid level sensor (87).

9. The device for removing pollutants from the surface of fruits and vegetables according to claim 8, characterized in that: The kneading mechanism (8) further comprises connecting plates (88) which are distributed in an annular array and fixedly connected to the outer surface of the processing tank (81); a driving plate (89) is hingedly connected to the free end surface of the connecting plate (88); the driving plate (89) is rotatably connected to the lower surface of the supporting panel (69) via a connecting rotating block; a rotating motor (90) is fixedly connected to the upper surface of the supporting panel (69); and the outer surface of the output shaft of the rotating motor (90) is fixedly connected to the surface of one of the driving plates (89).

10. A cleaning method for removing pollutants from the surface of fruits and vegetables according to claim 9, characterized in that: The steps include: S1, placing fruits and vegetables inside a cleaning tank (1) so that they are transported forward along a mesh conveyor belt (3). In order to effectively clean the mud and sand on the surface of the fruits and vegetables, the pulley transmission assembly housing (12) drives the brush roller (11) to rotate. The fruits and vegetables are initially scrubbed of mud and sand on the surface by the rotating brush roller (11) at the front end of the conveyor. Then, a high-pressure water flow is provided in a high-pressure water pipe (52) through a high-pressure water pump (55), so that the jet nozzle (53) effectively removes stubborn mud and sand, surface dirt and other solid pollutants through the high-pressure water flow; S2, when the fruits and vegetables are transported to the bottom of the gantry (5), the kneading palm (83) is located inside the fruits and vegetables, and the rotating motor (90) drives one of the driving plates (89) to rotate in a uniform circumferential direction, and the connection between the connecting plate (88) and the other two driving plates (89) can drive the processing tank (81) to rotate back and forth on the lower surface of the supporting panel (69) to achieve the kneading action; S3, during the kneading process, the processing tank (81) is filled with cleaning liquid, and the motor in the motor block (82) drives the spiral stirring rod (85) to stir the cleaning liquid in the processing tank (81), so that the cleaning liquid enters the cavity of the kneading palm (83) in a spiral state, and is spirally output from the bubble hole (84) to hit the surface of the fruit and vegetable, so that the surface of the fruit and vegetable is deeply cleaned; S4. In order to increase the effective area of ​​the kneading palm (83), the driving motors (66) respectively drive the respective adjusting screws (61) to rotate during the operation of the kneading palm (83). When the two driving motors (66) simultaneously control the adjusting screws (61) to rotate in the same direction, the squeezing and feeding gear (65) can be moved horizontally, thereby driving the supporting surface block (63) to move horizontally and radially on the outer surface of the supporting slide bar (62). The connection between the guide slider (71) and the guide clamping block (72) can drive the supporting panel (69) to move horizontally and radially, thereby realizing the radial horizontal movement of the kneading palm (83); S5. When the driving motor (66) controls the two adjusting screws (61) to rotate in different directions, the meshing pinching gear (65) can be controlled to rotate, and then the linkage gear (67) can be rotated through the connection of the transmission shaft (64), and then the rack rod (68) can be horizontally moved axially. The rack rod (68) drives the support panel (69) to move axially. When the support panel (69) moves, the connecting slide rod (70) is extended and retracted on the inner surface of the guide slide block (71), and the rack rod (68) is slid and retracted on the inner surface of the guide block (72), so that the forces at both ends of the support panel (69) are balanced, thereby achieving the axial movement of the rubbing palm (83), so that the rubbing palm (83) increases the area of ​​rubbing fruits and vegetables; S6. The brush roller (11) rotating at the rear can cause the fruits and vegetables to be turned over and taken away from the screen conveyor belt (3), thereby increasing the gap between the fruits and vegetables and causing the mud and sand to flow to the inner bottom wall of the cleaning tank (1) under the vibration of the ultrasonic cleaning system (2), thereby preventing the mud and sand from adhering to the surface of the fruits and vegetables and being transported together. When the cleaned fruits and vegetables are transported to the bottom of the protective housing (4), they are irradiated and sterilized by the ultraviolet sterilization lamp (41) and then discharged from the cleaning tank (1) for the next step of processing.

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