Gap-adjustable flexible clamping type leaf vegetable conveying method and device

Abstract

The invention discloses a gap-adjustable flexible clamping type leaf vegetable conveying method and device.The method comprises the following steps that S1, according to the variety and size of soft whole-leaf type leaf vegetables to be conveyed, the clamping gap between two clamping conveying parts which operate synchronously is adjusted, and the gap is made to be matched with the size of stems of the leaf vegetables; s2, clamping and conveying parts are in the shape of a trapezoid with the wide upper portion and the narrow lower portion, the lower portions of the clamping and conveying parts are immersed in the cleaning medium, the soft whole-leaf leafy vegetables with the roots removed are placed at the upper side inlets of the two clamping and conveying parts, the stems of the leafy vegetables are gently clamped through flexible clamping parts of the clamping and conveying parts, and the roots of the leafy vegetables are kept to correspond to the inner side directions of the clamping and conveying parts. The leaf vegetable cleaning device relates to the technical field of leaf vegetable cleaning equipment, the clamping conveying part enables leaf vegetables to be clamped between the clamping blocks in an inverted mode, enter water and exit water from the inclined state, and move in the water in the inverted state after entering the water, the damage degree of leaves is greatly reduced, and when the leaves are taken out, drainage of water accumulated between the leaves can be promoted.

Description

Technical Field

[0001] This invention relates to the field of leafy vegetable washing equipment technology, and more specifically, to a flexible clamping leafy vegetable conveying method and equipment with adjustable gap. Background Technology

[0002] Soft, leafy vegetables are common ingredients in daily life, and their cleaning process often requires a lot of manpower and time. Traditional cleaning methods usually rely on manual operation or simple cleaning equipment, which are not only inefficient but also difficult to ensure even and thorough cleaning. This is especially true for soft, leafy vegetables such as lettuce and spinach, whose tenderness, fragility, inconsistent size, and irregular shape make them very difficult to clean, often resulting in problems such as unstable handling or insufficient cleaning. Traditional equipment typically involves directly rinsing with water or placing the vegetables on a conveyor belt for cleaning. However, the cleaning effect is not ideal, and the areas in contact with the conveyor belt are prone to damage and incomplete cleaning. Traditional cleaning methods often fail to balance cleaning effectiveness with the integrity of vegetables, easily causing damage to leafy greens or incomplete cleaning. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a flexible clamping method and device for conveying leafy vegetables with adjustable gaps. The clamping and conveying part enables the leafy vegetables to enter the cleaning medium in an inverted state as they move along the clamping and conveying part. During the movement along the lower side of the clamping and conveying part, the leafy vegetables move in an inverted state in the cleaning medium until they reach the outlet position at the other end of the upper side of the clamping and conveying part, where the leafy vegetables are removed from the outlet position. When the leafy vegetables are clamped inverted between the clamping blocks, the degree of damage to the leaves is greatly reduced due to the inclined state of entering and exiting the water and the inverted state after entering the water. When the leafy vegetables are removed, it can also promote the drainage of water accumulated between the leaves.

[0004] A flexible clamping method for transporting leafy vegetables with adjustable gaps includes the following steps: S1: Adjust the clamping gap between the two synchronously operating clamping and conveying parts according to the variety and size of the soft whole-leaf vegetables to be transported, so that the gap is adapted to the size of the leafy vegetable stem. S2: The clamping and conveying section is trapezoidal with a wider top and a narrower bottom, and the lower part is immersed in the cleaning medium. Soft, whole-leaf vegetables with the roots removed are placed at the upper entrance of the two clamping and conveying sections. The flexible clamping parts of the clamping and conveying section gently clamp the stem of the leafy vegetable, keeping the root of the leafy vegetable in the direction corresponding to the inside of the clamping and conveying section. S3: Drive the two clamping conveyors to run synchronously, move the leafy vegetables along the conveying direction, and make the leafy vegetables fully contact the cleaning medium during the conveying process. The leafy vegetables enter the cleaning medium at the inlet position. As the leafy vegetables follow the clamping conveyors, they complete the inverted state and enter the cleaning medium in the inverted state. As they move along the lower side of the clamping conveyors, they move in the cleaning medium in the inverted state until they reach the outlet position at the other end of the upper side of the clamping conveyors. S4: Remove the leafy greens from the exit positions of the two clamping conveyors.

[0005] Furthermore, in step S1, the clamping gap is adjusted by moving one of the mounting brackets of the clamping conveyor, and the mounting bracket is moved in position by the slide module. Furthermore, in step S2, the leafy vegetables are completely placed in the cleaning medium, which is water, and air bubbles are introduced into the water through the bubble generating structure to enhance the cleaning effect of the leafy vegetables; when the clamping and conveying unit is running, its transmission stability is maintained by the position-adjustable tensioning component. Furthermore, in step S1, the gap between the two clamping conveyors is adjusted through the touch screen human-machine interface. In step S3, the operating speed of the clamping conveyor and the amount of air introduced into the bubble generating structure are adjusted through the touch screen human-machine interface to adapt to the cleaning and conveying needs of different leafy vegetables.

[0006] A flexible clamping leafy vegetable conveying device with adjustable gap using the above method includes a clamping and conveying section, a clamping gap adjustment section, a main frame, a water tank, and an air bubble cleaning section. The main frame is used to fix the water tank and install the clamping gap adjustment section and the clamping and conveying section. The water tank is used to contain the cleaning medium. The clamping and conveying section is trapezoidal in shape, wider at the top and narrower at the bottom, with its lower part immersed in the cleaning medium. The air bubble cleaning section is used to blow air into the cleaning water in the water tank to generate air bubbles for cleaning.

[0007] Furthermore, the clamping and conveying unit is provided in two sets, each set including a mounting frame, a first motor, a chain, a clamping block, and sprockets. There are several sprockets arranged in a trapezoidal pattern. The sprockets in each set are evenly installed on the upper and lower sides of the mounting frame. The distance between adjacent sprockets on the upper side is greater than the distance between adjacent sprockets on the lower side. The sprockets are rotatably mounted on the mounting frame via bearings. The chain forms a trapezoidal structure that is wider at the top and narrower at the bottom, with one end of the trapezoidal structure being the inlet and the other end being the outlet. The output shaft of the first motor is fixedly connected to one of the sprockets for driving the sprocket. The rotation drives the chain to move. The chain is sleeved on the sprocket and is connected to the sprocket in a transmission engagement. The clamping block is fixed to the side of the chain. The side of the clamping block that contacts the chain is flat, and its two sides are concave arc surfaces. The clamping block is made of flexible material. The clamping block has a through hole that runs through the height of the pool. The side of the clamping block away from the chain has a pair of clamping inclined surfaces and a clamping vertical surface. The clamping vertical surface is located between the two clamping inclined surfaces and is connected to the clamping inclined surfaces. The clamping inclined surfaces are connected to the concave arc surfaces. The two sets of clamping blocks on the chain are symmetrical.

[0008] Furthermore, the clamping gap adjustment unit includes a slide module and a connecting frame. The slide module is mounted on the main frame via the connecting frame. One set of mounting frames for clamping and conveying parts is connected to the connecting frame, and the other set of mounting frames for clamping and conveying parts is connected to the slide module. The slide module drives the set of clamping and conveying parts to move in order to adjust the gap between the two sets of clamping and conveying parts.

[0009] Furthermore, the slide module includes a guide rail, a second motor, a sliding seat, a slide groove, a screw, and a slider. The guide rail fixes the connecting frame. Slide grooves are formed on both sides of the guide rail. The slider is slidably connected within the slide grooves of the guide rail. The slider is screwed to the screw. Both ends of the screw are rotatably connected to the guide rail. A second motor is fixedly mounted on one end of the guide rail. The output shaft of the second motor is fixedly connected to one end of the screw. Both sides of the slider are fixedly connected to one side of the sliding seat. The sliding seat passes through the slide groove and can move linearly along the slide groove. The sliding seat is fixedly connected to the mounting frame of the corresponding clamping and conveying part.

[0010] Furthermore, the bubble cleaning structure includes an air pump, a valve, a pipeline, a delivery chamber, a branch pipe, and an air outlet. The air pump is connected to the delivery chamber through the pipeline, the valve is located on the pipeline, the branch pipe is connected to the delivery chamber and passes through one side of the water tank and is located at the bottom of the water tank, the air outlet is opened on the branch pipe, the branch pipe fixes the water tank, the delivery chamber fixes the support, and the air pump is located on one side of the support.

[0011] Furthermore, it also includes a touch screen human-machine interface, which is electrically connected to the first motor, the valve, and the second motor, and is used to adjust the motor speed and the valve opening.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are: Leafy vegetables can be completely submerged in water, allowing them to fully contact the water while upside down, thus improving the cleaning effect. The clamping and conveying unit allows leafy vegetables to enter the cleaning medium in an inverted position as they move along the unit. They continue to move inverted within the cleaning medium as they move along the lower side of the unit until they reach the outlet at the other end of the unit. The leafy vegetables are then removed from the outlet. When the leafy vegetables are clamped inverted between the clamping blocks, the tilted entry and exit from the water, combined with their inverted movement in the water, significantly reduces damage to the leaves. Upon removal, it also promotes the drainage of accumulated water between the leaves. This dynamic cleaning method offers higher efficiency and better cleaning results compared to traditional static soaking or simple rinsing. The flexible silicone design of the clamping blocks, combined with the assistance of bubble cleaning, ensures that the leafy vegetables are stably clamped while surface dirt is thoroughly removed during the washing process. This method is suitable for cleaning various soft, whole-leaf vegetables. The rotation speed of the conveyor belt can be adjusted to meet the washing requirements of different vegetables, and the clamping gap between the two conveyor belts can be adjusted to meet the requirements of different vegetable varieties and sizes. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 The three-dimensional representation of the present invention Figure 1 ; Figure 2 The three-dimensional representation of the present invention Figure 2 ; Figure 3 For the present invention Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a partial three-dimensional representation of the present invention. Figure 1 ; Figure 5 This is a partial three-dimensional representation of the present invention. Figure 2 ; Figure 6This is a perspective view illustrating the bubble generation structure of the present invention.

[0014] In the diagram: 1. Clamping and conveying unit; 101. Mounting frame; 102. First motor; 103. Chain; 104. Clamping block; 1041. Concave arc surface; 1042. Through hole; 1043. Clamping inclined surface; 1044. Clamping vertical surface; 105. Sprocket; 106. Tensioning wheel; 2. Clamping distance adjustment unit; 201. Guide rail; 202. Second motor; 203. Sliding seat; 204. Slide groove; 205. Screw; 206. Slider; 207. Connecting frame; 3. Main frame; 4. Water tank; 5. Bubble generating structure; 501. Air pump; 502. Valve; 503. Pipeline; 504. Conveying chamber; 505. Branch pipe; 506. Air outlet; 6. Touch screen human-machine interface. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example: This invention discloses a flexible clamping leafy vegetable conveying method with adjustable gap and a conveying device using this method; the leafy vegetables are flexibly clamped by clamping blocks, suitable for soft, whole-leaf vegetables with the roots removed; two synchronously operating clamping and conveying parts gently clamp the stems of the leafy vegetables, keeping them upright and orderly moving in an inverted state during conveying, allowing the leafy vegetables to fully contact water, assisting in bubble washing, and achieving the cleaning of vegetables; specifically including the following steps: S1: Adjust the clamping gap between the two synchronously operating clamping and conveying parts 1 according to the variety and size of the soft whole leafy vegetables to be transported, so that the gap is adapted to the size of the leafy vegetable stem. S2: The clamping and conveying part 1 is trapezoidal with a wider top and a narrower bottom, and the lower part is immersed in the cleaning medium. Soft whole leafy vegetables with the roots removed are placed at the upper entrance of the two clamping and conveying parts 1. The stem of the leafy vegetable is gently clamped by the flexible clamping component of the clamping and conveying part 1, so that the root of the leafy vegetable is aligned with the inner side of the clamping and conveying part 1. S3: Drive the two clamping conveyors 1 to run synchronously, move the leafy vegetables along the conveying direction, and make the leafy vegetables fully contact the cleaning medium during the conveying process. The leafy vegetables enter the cleaning medium at the inlet position. As the leafy vegetables follow the clamping conveyor 1, they complete the inverted state and enter the cleaning medium in the inverted state. As they move along the lower side of the clamping conveyor 1, they move in the cleaning medium in the inverted state until they reach the outlet position at the other end of the upper side of the clamping conveyor. S4: Remove the leafy greens from the outlet of the two clamping conveyors 1.

[0016] The clamping part of the clamping and conveying unit 1 is designed to be flexible. Through the above steps, the clamping and conveying unit 1 can gently clamp the stem of the leafy vegetable. The leafy vegetable enters the cleaning medium at the inlet position of the clamping and conveying unit 1. As the leafy vegetable moves with the clamping and conveying unit 1, it completes its inverted state and enters the cleaning medium in an inverted state. As it moves along the lower side of the clamping and conveying unit 1, it moves in an inverted state in the cleaning medium until it reaches the outlet position at the other end of the upper side of the clamping and conveying unit 1. When the leafy vegetable is clamped inverted between the clamping blocks 104, it enters the water due to its tilted state. The water purifier moves inverted position in the water after entering the water, greatly reducing the damage to the leaves. When removed, it also promotes the drainage of water accumulated between the leaves. Compared with traditional static soaking or simple rinsing, the dynamic cleaning method has higher efficiency and better cleaning effect. Through the flexible design of the clamping block 104, combined with the auxiliary effect of bubble cleaning, it can ensure that leafy vegetables are stably clamped while surface dirt is fully removed during the washing process, achieving ideal cleaning effect. It is suitable for the cleaning needs of a variety of soft whole leaf vegetables.

[0017] In step S1, the clamping gap is adjusted by moving one of the mounting brackets of the clamping conveyor 1. The mounting bracket is moved by the sliding table module. The clamping gap can be flexibly adjusted according to the characteristics of different leafy vegetables. In step S2, the leafy vegetables are completely immersed in the cleaning medium, which is water. Air bubbles are introduced into the water through the bubble-generating structure 5 to enhance the cleaning effect. During operation, the clamping and conveying unit 1 maintains its transmission stability through an adjustable tensioning component. The bubble-generating structure 5 enhances the turbulence of the water through the rising movement of the bubbles, further improving the cleaning quality and effectively preventing damage to the leafy vegetables during the cleaning process, thus ensuring the integrity of the vegetables. Furthermore, in step S1, the gap between the two clamping conveyors 1 is adjusted through the touch screen human-machine interface 6. In step S3, the operating speed of the clamping conveyor 1 and the amount of air introduced by the bubble generating structure 5 are adjusted through the touch screen human-machine interface 6 to adapt to the cleaning and conveying needs of different leafy vegetables.

[0018] The conveying speed and the amount of air bubbles introduced can be adjusted to meet the cleaning needs of different vegetables.

[0019] refer to Figure 1 , Figure 2 and Figure 3A flexible clamping leafy vegetable conveying device with adjustable gap using the above method includes a clamping and conveying section 1, a clamping gap adjustment section 2, a main frame 3, a water tank 4, an air bubble cleaning section, a touch screen human-machine interface 6, and a tensioning wheel 106. The main frame 3 is used to fix the water tank 4 and install the clamping gap adjustment section 2 and the clamping and conveying section 1. The water tank 4 is used to contain the cleaning medium. The clamping and conveying section 1 is trapezoidal with a wider top and a narrower bottom, and its lower part is immersed in the cleaning medium. The air bubble cleaning section is used to blow air into the cleaning water in the water tank 4 to generate air bubbles for cleaning. The clamping and conveying unit 1 is provided in two sets, each set including a mounting frame 101, a first motor 102, a chain 103, a clamping block 104, and sprockets 105. There are several sprockets 105 arranged in a trapezoidal pattern. Each set of sprockets 105 is evenly installed on the upper and lower sides of the mounting frame 101. The distance between adjacent sprockets 105 on the upper side is greater than the distance between adjacent sprockets 105 on the lower side. The sprockets 105 are rotatably mounted on the mounting frame 101 via bearings. The chain 103 forms a trapezoidal structure that is wider at the top and narrower at the bottom through the sprockets 105. One end is the inlet position, and the other end is the outlet position. The output shaft of the first motor 102 is fixedly connected to one of the sprockets 105, which drives the sprocket 105 to rotate and thus drive the chain 103 to move. Both first motors 102, of the same model, start simultaneously to achieve synchronous transmission of the two chains 103. The chain 103 is sleeved on the sprocket 105 and is connected to it in a transmission engagement. The clamping block 104 is fixedly mounted on the side of the chain 103. The clamping block 104 is made of flexible material, and the side of the clamping block 104 that contacts the chain 103 is... The clamping block 104 has a flat surface with concave arc surfaces 1041 on both sides. It has a through hole 1042 extending along the height of the pool 4. On the side of the clamping block 104 away from the chain 103, it has a pair of clamping inclined surfaces 1043 and a clamping vertical surface 1044. The clamping vertical surface 1044 is positioned between and connected to the two clamping inclined surfaces 1043. The clamping inclined surfaces 1043 connect to the concave arc surfaces 1041. Its through hole 1042 facilitates rapid detachment of the cleaning medium. When clamping leafy vegetables, the clamping block 104 deforms under force. The hollow structure design, combined with the concave arc surface 1041, the clamping inclined surface 1043, and the clamping vertical surface 1044, increases the clamping contact area, which can reduce damage to the stems of leafy vegetables. The clamping block 104 is installed on the chain 103 by bolts and nuts. The bolt passes through the back of the clamping block 104 and one side of the chain 103 and then screws the nut to realize the installation of the clamping block 104. The clamping blocks 104 on the two sets of the chain 103 are symmetrical. The tensioning wheel 106 is installed on the mounting frame 101 by bolts, nuts and washers, and is supported by bearings. It is used to tension the chain 103. By adjusting the position of the tension wheel 106, the upper side of the trapezoidal structure formed by the sprocket 105 and the tension wheel 106 of the chain 103 is the inlet position corresponding to one end of the tension wheel 106. The sprocket 105 corresponding to the inlet position can be adjusted. By adjusting the position of the sprocket 105 and the tension wheel 106, the tension of the chain 103 can be adjusted, thereby ensuring the stability of the clamping block 104 during operation. The lower side of the trapezoidal structure formed by the sprocket 105 and the tension wheel 106 of the chain 103 is immersed in water, and the other end of the upper side is the outlet position. The clamping distance adjustment unit 2 works in conjunction with the clamping and conveying unit 1 to adapt to the conveying needs of leafy vegetables of different sizes by changing the distance between the two sets of chains 103. The rotation of the output shaft of the first motor 102 can drive the sprocket 105 to rotate, thereby driving the chain 103 to move and realize the conveying of vegetables. The touch screen human-machine interface 6 (using a 7-inch capacitive touch IPS LCD screen and a USART serial interface, which is an existing product and will not be described in detail) is set on one side of the main frame 3 to display the working status of the equipment in real time and allow the operator to adjust parameters such as the conveying speed and the distance between the two clamping and conveying units according to actual needs. The bubble cleaning unit is connected to an external air pump 501 through a pipe. It uses the disturbance generated during the rise of the bubbles to remove impurities attached to the surface of the leafy vegetables, while avoiding damage to the vegetables. A drain valve (not shown in the figure) is also installed at the bottom of the pool 4 for draining water.

[0020] refer to Figure 4 and Figure 5 The clamping distance adjustment unit 2 includes a slide module and a connecting frame 207. The slide module is mounted on the main frame 3 through the connecting frame 207. One set of mounting frames 101 for clamping and conveying parts 1 is connected to the connecting frame 207, and the other set of mounting frames 101 for clamping and conveying parts 1 is connected to the slide module. The slide module drives the set of clamping and conveying parts 1 to move in order to adjust the gap between the two sets of clamping and conveying parts 1.

[0021] The slide module includes a guide rail 201, a second motor 202, a sliding seat 203, a slide groove 204, a screw 205, and a slider 206. The guide rail 201 fixes the connecting frame 207. Slide grooves 204 are provided on both sides of the guide rail 201. The slider 206 is slidably connected in the track groove of the guide rail 201. The slider 206 is screwed to the screw 205. The two ends of the screw 205 are rotatably connected to the guide rail 201. The second motor 202 is fixedly installed at one end of the guide rail 201. The output shaft of the second motor 202 is fixedly connected to one end of the screw 205. The two sides of the slider 206 are respectively fixedly connected to one side of the sliding seat 203. The sliding seat 203 passes through the slide groove 204 and can move linearly along the slide groove 204. The sliding seat 203 is fixedly connected to the mounting frame 101 of the corresponding clamping and conveying part 1.

[0022] The output shaft of the second motor 202 rotates, driving the screw 205 to rotate, thereby causing the slider 206 to move linearly along the track groove of the guide rail 201. The movement of the slider 206 causes the sliding seat 203 to slide synchronously within the slide groove 204. The movement of the sliding seat 203 further pushes the mounting bracket 101 of the clamping and conveying part 1 connected to it, realizing the position adjustment of the clamping and conveying part 1. The gap adjustment between the two sets of clamping and conveying parts 1 can adapt to the clamping requirements of vegetables of different sizes.

[0023] refer to Figure 6 The bubble cleaning structure includes an air pump 501, a valve 502, a pipeline 503, a delivery chamber 504, a branch pipe 505, and an air outlet 506. The air pump 501 is connected to the delivery chamber 504 through the pipeline 503. The valve 502 is installed on the pipeline 503. The branch pipe 505 is connected to the delivery chamber 504 and passes through one side of the water tank 4, located at the bottom of the water tank 4. The air outlet 506 is opened on the branch pipe 505. The branch pipe 505 fixes the water tank 4. The delivery chamber 504 fixes the support. The air pump 501 is located on one side of the support. The valve 502 is a solenoid valve.

[0024] Air pump 501 delivers air through pipe 503 into conveying chamber 504, and then releases it from air outlet 506 via branch pipe 505, forming a large number of bubbles. These bubbles effectively agitate the water as they rise, thus cleaning the surface of the vegetables in pool 4. Valve 502 controls the airflow, thereby adjusting the amount of bubbles produced to meet different cleaning needs. The branch pipe 505, fixed to the bottom of pool 4, ensures that the bubbles are evenly distributed throughout the pool, completing the cleaning process without damaging the vegetables, thus improving cleaning efficiency and effectiveness.

[0025] The touchscreen human-machine interface 6 is electrically connected to the first motor 102, valve 502, and second motor 202, and is used to control the motor switching, adjust the motor speed, and control the opening degree of valve 502. The touchscreen human-machine interface 6 is a touch display screen, which houses a controller that is electrically connected to the first motor 102, valve 502, and second motor 202.

[0026] In this invention, the first motor 102 and the second motor 202 are waterproof motors, the second motor 202 is a stepper motor, the chain 103, the sprocket 105, and the tension wheel 106 are made of POM engineering plastic, the sprocket 105 and the tension wheel 106 are mounted on the mounting bracket 101 through waterproof oil-free self-lubricating bearings, and the clamping block 104 is made of food-grade silicone material.

[0027] The working process of this invention is as follows: the distance between the two clamping and conveying parts 1 is adjusted by the second motor 202, the first motor 102 and the air pump 501 are started. After the air pump 501 starts working, air enters the conveying chamber 504 through the pipeline 503 and is released from the air outlet 506 through the branch pipe 505, generating a large number of bubbles. When these bubbles rise in the water tank 4, they agitate the water and effectively remove impurities from the surface of the leafy vegetables. The soft, whole-leafed vegetables with the roots removed are carefully placed between the inlet positions of the clamping blocks 104 of the two clamping conveyor sections 1. The clamping blocks 104 are made of silicone and can gently and firmly clamp the stems of the vegetables, keeping them upright throughout the process and preventing the leaves from folding or being damaged. The output shaft of the first motor 102 rotates, driving the sprocket 105 to rotate. The rotation of the sprocket 105 further drives the chain 103 to move, causing the two clamping conveyor sections 1 to run synchronously. The clamping blocks 104 on the chain 103 move accordingly, forming a flexible clamping and conveying of the leafy vegetables. The leafy vegetables are smoothly moved along the preset conveying direction. During the conveying process, the leafy vegetables are in full contact with the cleaning medium (such as water or cleaning liquid). Through the flow of the medium and the synergistic effect of the clamping conveyor section 1, the leafy vegetables enter the cleaning medium in an inclined state as they move with the clamping conveyor section 1. During the movement along the lower side of the clamping conveyor section 1, they move in an upside-down state in the cleaning medium until they reach the outlet position at the other end of the upper side of the clamping conveyor section 1. The leafy vegetables are then taken out from the outlet position for subsequent processing or packaging. When the leafy vegetables are clamped upside down between the clamping blocks 104, the degree of damage to the leaves is greatly reduced due to the inclined state when entering and exiting the water. When they enter the water, they move in an upside-down state in the water. When they are taken out, it can also promote the drainage of water accumulated between the leaves. The touch screen human-machine interface 6 displays the working status of the equipment in real time. Operators can adjust the speed of the first motor 102, the opening degree of the valve 502, and the operating parameters of the second motor 202 as needed to optimize the cleaning and transmission effect until the cleaning task is completed.

[0028] The above-disclosed embodiments are merely specific examples of the present invention. However, the present invention is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A method of flexible gripper leafy vegetable conveying with adjustable gap, characterized in that, It comprises the following steps: S1: According to the variety and size of the soft whole leaf leafy vegetables to be transported, adjust the clamping gap between the two synchronously running clamping conveying parts (1) to adapt the gap to the size of the stem of the leafy vegetables; S2: The clamping conveying part (1) is trapezoidal in shape, with the lower part immersed in the cleaning medium. The soft whole leaf leafy vegetables without roots are placed at the upper side inlet position of the two clamping conveying parts (1), and the stem of the leafy vegetables is gently clamped by the flexible clamping part of the clamping conveying part (1), so that the leafy vegetables keep the root corresponding to the inside of the clamping conveying part (1); S3: Drive the two clamping conveying parts (1) to run synchronously, drive the leafy vegetables to move along the transmission direction, and make the leafy vegetables fully contact with the cleaning medium during the transmission process. The leafy vegetables enter the cleaning medium at the inlet position, complete the inverted state and enter the cleaning medium in the inverted state during the movement following the clamping conveying part (1), move in the inverted state in the cleaning medium during the movement along the lower side of the clamping conveying part (1), and move to the other end outlet position of the upper side of the clamping conveying part; S4: Take the leafy vegetables off from the outlet position of the two clamping conveying parts (1).

2. The gap-adjustable flexible clamping type leafy vegetable conveying method according to claim 1, wherein in the step S1, the clamping gap is adjusted by moving the installation support of one of the clamping conveying parts (1), and the installation support is driven to move by a sliding table module. In step S2, the leafy vegetables are completely placed in the cleaning medium, the cleaning medium is water, and air bubbles are introduced into the water by an air bubble generating structure (5) to enhance the cleaning effect of the leafy vegetables; when the clamping conveying part (1) is running, the tensioning part is used to maintain the transmission stability of the clamping conveying part (1).

3. The method of claim 2, wherein the gap is adjustable. In step S1, the gap between the two clamping conveying parts (1) is adjusted by a touch screen man-machine interface (6), and in step S3, the running speed of the clamping conveying part (1) and the amount of air bubbles introduced by the air bubble generating structure (5) are adjusted by the touch screen man-machine interface (6) to adapt to the cleaning and conveying needs of different leafy vegetables.

4. The method of claim 3, wherein the gap is adjustable. It comprises a clamping conveying part (1), a clamping distance adjusting part (2), a main frame (3), a water tank (4) and an air bubble cleaning part. The main frame (3) is used to fix the water tank (4) and install the clamping distance adjusting part (2) and the clamping conveying part (1). The water tank (4) is used to contain the cleaning medium. The clamping conveying part (1) is trapezoidal in shape, with the lower part immersed in the cleaning medium. The air bubble cleaning part is used to blow air bubbles in the water in the water tank (4) for cleaning.

5. A flexible gripper type leafy vegetable conveying apparatus with adjustable gap, applying the method according to any one of claims 1 to 4, characterized in that, ​ 6. A flexible gripper leaf vegetable conveying apparatus with adjustable gap according to claim 5, characterized in that The clamping conveying part (1) is provided with two groups, each group comprising a mounting frame (101), a first motor (102), a chain (103), a clamping block (104) and a sprocket (105), the sprocket (105) is several and arranged in a trapezoidal shape, the sprocket (105) of each group is installed on the upper side and the lower side of the mounting frame (101) in average, the spacing between the adjacent sprockets (105) on the upper side is greater than that on the lower side, the sprocket (105) is rotatably installed on the mounting frame (101) through a bearing, the chain (103) forms a trapezoidal structure with wide top and narrow bottom through the sprocket (105), one end of the trapezoidal structure is an entrance position, the other end is an exit position, the output shaft of the first motor (102) is fixedly connected with one of the sprockets (105) for driving the sprocket (105) to rotate and in turn driving the chain (103) to move, the chain (103) is sleeved on the sprocket (105) and is in transmission cooperation with the sprocket (105), the clamping block (104) is fixedly installed on the side of the chain (103), one side of the clamping block (104) in contact with the chain (103) is a plane, the two sides thereof are inwardly recessed concave arc surfaces (1041), the clamping block (104) is made of flexible material, the clamping block (104) has a through hole (1042) penetrating in the height direction of the pool (4), one side of the clamping block (104) away from the chain (103) has a pair of clamping inclined surfaces (1043) and a clamping vertical surface (1044), the clamping vertical surface (1044) is arranged between the two clamping inclined surfaces (1043) and is connected with the clamping inclined surfaces (1043), the clamping inclined surfaces (1043) are connected with the concave arc surfaces (1041), the clamping blocks (104) on the chains (103) of the two groups are symmetrical.

7. A flexible pinch grip leafy vegetable conveying apparatus of the adjustable gap type according to claim 5, wherein, The clamping distance adjusting part (2) comprises a sliding table module and a connecting frame (207), the sliding table module is installed on the main frame (3) through the connecting frame (207), the mounting frame (101) of one group of clamping conveying parts (1) is connected with the connecting frame (207), the mounting frame (101) of the other group of clamping conveying parts (1) is connected with the sliding table module, the sliding table module drives the group of clamping conveying parts (1) to move to adjust the gap between the two groups of clamping conveying parts (1).

8. A flexible gripper leaf vegetable conveying apparatus with adjustable gap according to claim 7, characterized in that The sliding table module includes a guide rail (201), a second motor (202), a sliding seat (203), a sliding groove (204), a screw rod (205) and a sliding block (206), the guide rail (201) fixes the connecting frame (207), the guide rail (201) is provided with the sliding groove (204) on both sides, the sliding block (206) is slidably connected in the track groove of the guide rail (201), the sliding block (206) is screwed with the screw rod (205), the screw rod (205) is rotatably connected with the guide rail (201) at both ends, the guide rail (201) is fixedly provided with the second motor (202) at one end, the output shaft of the second motor (202) is fixedly connected with one end of the screw rod (205), the sliding block (206) is fixedly connected with one side of the sliding seat (203) on both sides, the sliding seat (203) passes through the sliding groove (204), the sliding seat (203) can move linearly along the sliding groove (204), and the sliding seat (203) is fixedly connected with the mounting frame (101) of the corresponding clamping conveying part (1).

9. A flexible pinch grip leafy vegetable conveying apparatus of the adjustable gap type according to claim 5, characterized in that, The bubble cleaning structure includes an air pump (501), a valve (502), a pipeline (503), a conveying cavity (504), a branch pipe (505) and an air outlet (506), the air pump (501) is communicated with the conveying cavity (504) through the pipeline (503), the valve (502) is arranged on the pipeline (503), the branch pipe (505) is communicated with the conveying cavity (504) and passes through one side of the water tank (4), the part of the branch pipe (505) in the water tank (4) is arranged at the bottom of the water tank (4), the air outlet (506) is arranged on the branch pipe (505), the branch pipe (505) fixes the water tank (4), the conveying cavity (504) fixes the support, and the air pump (501) is arranged on one side of the support.

10. A flexible gripper leaf vegetable conveying apparatus with adjustable gap according to claim 9, characterized in that The touch screen man-machine interface (6) is electrically connected with the first motor (102), the valve (502) and the second motor (202), and is used for adjusting the opening and closing of the motor (102), the rotating speed and the opening degree of the valve (502).

Images