CN113180262A - Round-angle rectangular hydraulic type bean sprout peeling and cleaning device and bean sprout peeling and cleaning method - Google Patents

Abstract

The invention relates to a round-corner rectangular hydraulic bean sprout peeling and cleaning device which comprises an upper layer separation groove, a lower layer separation water tank and a pore plate, wherein the upper layer separation groove and the lower layer separation water tank are vertically separated by a partition plate; the lower layer separation water tank is internally provided with: a first water jet device which extends upwards into the upper layer separation groove and jets water; a second water flow injection device which extends upwards from one side to the middle upper part of the water layer of the upper layer separation tank and transversely injects towards the other side; a third water flow injection device which extends upwards into the upper layer separation groove and injects the water along the circumferential direction to enable the water body to generate vertical axis vortex at four round corners of the upper layer separation groove; a water pressing roller with a telescopic target hook and a conveyor belt which is obliquely arranged corresponding to the water pressing roller are arranged above the pore plate; the baffle is provided with a notch corresponding to the edge of the orifice plate, the notch is provided with a water baffle which can turn over and adjust the size of the water falling channel, and a bean skin collecting tank is arranged below the water baffle.

Description

Round-angle rectangular hydraulic type bean sprout peeling and cleaning device and bean sprout peeling and cleaning method

Technical Field

The invention relates to a rounded-corner rectangular hydraulic bean sprout peeling and cleaning device and method, and belongs to the technical field of bean sprout peeling.

Background

Bean sprouts are the most common vegetables on the table of people. The product has the advantages of various varieties, comprehensive nutrition, unique flavor, faint scent, crispness and tenderness, and is deeply loved by people. The bean sprouts are formed after the beans germinate, so the bean sprouts are called 'living vegetables'. The nutritive value and the nutritive utilization rate are greatly increased. Most typically, the dried beans contain substantially no vitamin C, but the bean sprouts contain very much vitamin C, and can maintain skin elasticity, thus being a good beauty culture product.

Peeling bean sprouts is a necessary operation and the existing peeling method is time-consuming and labor-consuming: in the process of accelerating the growth of bean sprouts, after the dried beans absorb moisture, the two bean halves expand, namely, the cotyledon at the later stage breaks the outer skin, and the outer skin gradually falls off along with the increase of the sprout body. The crust that drops can adhere on the bean sprouts surface, influences the bean sprouts outward appearance, mixes in the bean sprouts after the system of stir-fry also can influence the bean sprouts taste, often need peel the operation before the bean sprouts is sold and goes into the pot. The existing manual picking mode or some peeling equipment has low efficiency, bean sprout damage is easily caused, and a full-automatic bean sprout peeling device is urgently needed.

If the bean sprouts are not thoroughly cleaned, the health of eaters can be affected: in order to improve the quality of the bean sprouts, some bad merchants add 'no-root water' ('6-benzyladenine', '4-chlorophenylsodium acetate' and the like) and 'bleaching powder' and other toxic additives in the process of soaking the bean sprouts, so that the health of the bean sprouts is endangered, and cells of consumers are possibly cancerated. If the bean sprouts are not thoroughly cleaned before being eaten, great potential safety hazards exist due to drug residues.

Comparing the patent document list:

CN 201220671422-electric bean sprout peeling machine;

CN 201420068120.0-a wind-power bean sprout peeling machine;

CN201910840779.0- -bean sprout peeling machine;

CN 201820424701-a bean sprout peeling device;

CN 201910840846-a bean sprout peeling machine;

the defects and reasons of the prior art are as follows:

the existing bean sprout peeling equipment is numerous and basically based on the following three modes, namely a water floatation method, a double-layer vibrating screen method and an air suction peeling method. In particular, in practical use, the following problems exist:

1) the separation efficiency is low; the traditional peeling method such as air suction peeling and the like has low single separation rate, and in order to achieve the preset peeling effect, repeated peeling needs to be performed for many times, so that the time and the labor are consumed.

2) The device is complex and heavy; the existing peeling equipment is complex in device, large in size, and difficult to assemble and use, and is commonly used in large-scale food processing plants.

3) The application range is limited; the double-layer vibrating screen method and the air-suction peeling method are usually only suitable for bean seedlings of a single variety, the sizes of different bean sprout seed coats are different, and the separation efficiency is usually different greatly.

4) The vibrating screen has high noise and high energy consumption; the vibrating screen has the advantages of high noise, high energy consumption, low efficiency and low environmental friendliness during working.

5) The bean sprouts stirred mechanically are easy to break; the existing separation mode is often required to stir the bean sprouts during working, the operations such as oscillation and the like are carried out, the bean sprouts are easily broken and the like, and the appearance is influenced.

Disclosure of Invention

The invention aims to provide a hydraulic bean sprout peeling and cleaning device with round corners and rectangles and a method thereof, which solve the technical problems of low separation efficiency, complex and heavy device, limited application range, large vibration noise, high energy consumption, easy breakage of mechanically stirred bean sprouts and the like in bean sprout peeling in the prior art.

The invention adopts the following technical scheme:

a round corner rectangular hydraulic bean sprout peeling and cleaning device comprises an upper layer separation groove 1, a lower layer separation water tank 2 and a pore plate which is transversely arranged in the upper layer separation groove 1, wherein the upper layer separation groove and the lower layer separation water tank are vertically separated by a partition plate; the lower layer separation water tank 2 is internally provided with: a first water jet device which extends upwards into the upper layer separation groove 1 and jets water; a second water jet device which extends upwards from one side to the middle upper part of the water layer of the upper separation tank 1 and jets towards the other side transversely; a third water flow injection device which extends upwards into the upper layer separation groove 1 and injects the water along the circumferential direction to enable the water body to generate vertical axis vortex at four round corners of the upper layer separation groove 1; a pressurized water roller 3 with a telescopic target hook 6 and a conveyor belt 8 which is obliquely arranged and corresponds to the pressurized water roller 3 are arranged above the pore plate; the baffle is provided with a notch corresponding to the edge of the pore plate, the notch is provided with a water baffle 7 which can turn over and adjust the size of the water falling channel, and a bean skin collecting tank 9 is arranged below the water baffle 7.

Preferably, be equipped with water pump 15 in lower floor's separation water tank 2, water pump 15 can go up the water transport in lower floor's circulation water tank 2, falls into the triplex through the four-way honeycomb duct 17 of connecting in the water pump exit, and some is a plurality of impacts on the pipe, forms vertical efflux water column first rivers injection apparatus, some are for spouting along top layer bean sprouts traffic direction, form and promote top layer bean sprouts to 8 direction removal of conveyer belt second rivers injection apparatus, another part is divided into four, and the guide is to four bights of upper separation tank 1, forms and jets out along circumference and makes the water produce vertical axis swirl third rivers injection apparatus.

Preferably, the upper separation tank 1 adopts a round-corner rectangular structure.

Preferably, the water pressing roller 3 is of a hollow structure, part of the water pressing roller is immersed under the liquid level, and the bean sprouts floating above the liquid level can be pressed into the water when rotating along with the water pressing roller 3; the pressurized-water roller 3 is provided with the telescopic target hook 6 which can shift bean sprouts to be conveyed onto the conveyor belt 8.

Further, the telescopic target hook 6 adopts a gravity type telescopic design, and under the action of gravity of a heavy object hung at the center of the telescopic target hook, the rake hook retracts when going upward and extends when going downward so as to prevent the telescopic rake hook from hooking the bean sprouts to generate winding.

Further, still include image processing module 5, the orifice plate is double-deck sorting sieve, image processing module 5 judges bean sprouts appearance characteristic through image shooting, according to the double-deck sorting sieve of discernment result automatic movement, changes the sorting sieve aperture, prevents that the bean sprouts from dropping.

Further, when the water pump is powered on, the image detection module 5 controls to change the pitch angle and the jet flow of the jet nozzle of the third water flow injection device according to the rolling state images of the bean sprouts if the bean sprouts are settled at the holes of the separation sieve, so that the bottomed bean sprouts are blown up strongly.

Preferably, an ultrasonic generator 4 is further arranged in the upper layer separation tank 1.

A bean sprout peeling and cleaning method adopts the round-corner rectangular hydraulic bean sprout peeling and cleaning device; through the laser range finding method, judge the water depth in upper strata knockout drum 1 and lower floor's circulating water tank 2, when the liquid level in upper strata knockout drum 1 can not satisfy the requirement, adjust through following three kinds of modes: adjusting the flow of falling water: the falling flow of the water flow is controlled by adjusting the angle of the water baffle 7; adjusting and regulating the pumping flow of the upper layer separation tank 1: adjusting the power of the water pump 15, and changing the pumping quantity of water flow in unit time; adjusting the total water amount in the whole device: by controlling the opening of the water flow inlet and outlet valve, the inflow of clear water or the discharge of waste water is realized, and the total water quantity in the device is adjusted.

Preferably, an ultrasonic module is installed on the inner side surface of an external water storage cylinder for supplying water to the whole device, a high-frequency oscillation signal is transmitted and converted into high-frequency mechanical oscillation through a transducer and is transmitted into cleaning water, and fine bubble water flow is generated to impact bean sprouts and remove harmful substance residues; simultaneously, add water quality monitoring module in whole device, the turbidity of monitoring circulating water, the automatic water change after the harmful substance content of machine reaches the settlement threshold value to avoid the harmful substance enrichment that two-way rivers circulation leads to.

The invention has the beneficial effects that:

1) the bean sprouts are peeled and separated thoroughly, and are thoroughly peeled by adopting orthogonal bidirectional jet impact.

2) The device adopts a partition design. The bean sprouts are peeled off and the cleaning area and the separation area are separated, so that water in the peeled off and cleaning area fully impacts the bean sprouts, and the peeled bean sprouts are effectively peeled while being fully cleaned. The flow field is relatively stable in the disengagement zone, and the bottom water layer is impressed with the bean sprouts to the pressurized water gyro wheel of flexible harrow hook in area, and the bean sprouts is salvaged to the conveyer belt to it is good to have guaranteed the separation effect.

3) The bean sprouts are fully cleaned, and the water consumption is low. Adopt ultrasonic cleaning strategy cooperation rivers dual cycle design, water is abundant with bean sprouts contact, and can not bring the bean sprouts damage basically, and turbidity and pesticide residue can be monitored to water quality sensor etc. guide the science to trade water.

4) The orifice plate adopts the double-deck sieve of selecting separately, judges bean sprouts appearance characteristic through image shooting, selects separately the sieve according to the double-deck sieve of selecting separately of recognition result automatically move, changes the sieve aperture of selecting separately, prevents that the bean sprouts from dropping, and the separation is effectual, and the reliability is high.

5) According to the state image that rolls of bean sprouts, if the bean sprouts subsides in the small opening department of separating sieve, then the angle of pitch and the efflux flow that control changed first rivers injection device jet nozzle will sink the end bean sprouts brute force and blow up, intelligent degree is high, and the reliability is high.

6) The liquid level height is adjusted by three modes of adjusting the water falling flow, adjusting the power of the water pump and adjusting the total water quantity in the whole device, the liquid level control precision is high, and the reliability is high.

7) Can be used for peeling and separating bean sprouts of various shapes and sizes, and has small water consumption.

Drawings

Fig. 1 is a schematic structural view of a rounded rectangular hydraulic bean sprout peeling and cleaning device of the invention.

FIG. 2 is a side view of a squeeze roller and a retractable target hook thereon.

In the figure, 1 is an upper layer separation tank 2, a lower layer circulating water tank 3, a water pressing roller 4, an ultrasonic generator 5, an image processing module 6, a telescopic rake hook 7, a water baffle plate 8, a conveyor belt 9, a bean curd skin collecting tank 10, an inflow hole 11, a drain valve 12, a horizontal jet hole 13, a vortex jet hole 14, a vertical jet hole 15, a water pump 16, a sorting sieve 17 and a four-way guide pipe.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Referring to fig. 1-2, a rounded rectangular hydraulic bean sprout peeling and cleaning device comprises an upper layer separation tank 1, a lower layer separation tank 2 and a pore plate transversely arranged in the upper layer separation tank 1, wherein the upper layer separation tank and the lower layer separation tank are vertically separated by a partition plate; the lower layer separation water tank 2 is internally provided with: a first water jet device which extends upwards into the upper layer separation groove 1 and jets water; a second water jet device which extends upwards from one side to the middle upper part of the water layer of the upper separation tank 1 and jets towards the other side transversely; a third water flow injection device which extends upwards into the upper layer separation groove 1 and injects the water along the circumferential direction to enable the water body to generate vertical axis vortex at four round corners of the upper layer separation groove 1; a pressurized water roller 3 with a telescopic target hook 6 and a conveyor belt 8 which is obliquely arranged and corresponds to the pressurized water roller 3 are arranged above the pore plate; the baffle is provided with a notch corresponding to the edge of the pore plate, the notch is provided with a water baffle 7 which can turn over and adjust the size of the water falling channel, and a bean skin collecting tank 9 is arranged below the water baffle 7.

In this embodiment, referring to fig. 1, a water pump 15 is disposed in the lower separation water tank 2, the water pump 15 can convey water in the lower circulation water tank 2, the water is divided into three parts by a four-way flow guide pipe 17 connected to an outlet of the water pump, one part is a plurality of branches impacting on the guide pipe to form the first water jet device of the vertical jet water column, one part is jetted along a running direction of the surface layer bean sprouts to form the second water jet device which pushes the surface layer bean sprouts to move towards the conveyor belt 8, the other part is divided into four branches, the four branches are guided to four corners of the upper separation tank 1 to form the third water jet device which jets along a circumferential direction to generate a vertical axis vortex in the water body.

In this embodiment, referring to fig. 1, the upper separation groove 1 has a rounded rectangular structure.

In this embodiment, referring to fig. 1, the water pressing roller 3 is a hollow structure, and is partially immersed under the liquid surface, so that the bean sprouts floating above the liquid surface can be pressed into the water when rotating along with the water pressing roller 3; the pressurized-water roller 3 is provided with the telescopic target hook 6 which can shift bean sprouts to be conveyed onto the conveyor belt 8.

In this embodiment, referring to fig. 1-2, the retractable target hook 6 is designed to be retractable by gravity, and under the action of gravity of a weight hung at the center of the retractable target hook, the rake hook retracts when moving upwards and extends when moving downwards, so as to prevent the retractable rake hook from hooking the bean sprouts to hoist.

In this embodiment, still include image processing module 5, the orifice plate is double-deck selection screen board, image processing module 5 judges bean sprouts appearance characteristic through image shooting, according to the double-deck selection screen board of recognition result automatic movement, changes the selection screen aperture, prevents that the bean sprouts from dropping.

In this embodiment, when the water pump is powered on, the image detection module 5 controls to change the pitch angle and the jet flow rate of the first water jet device jet nozzle according to the rolling state image of the bean sprouts if the bean sprouts are settled at the weep holes of the separation sieve, so as to blow up the submerged bean sprouts with strong force.

In this embodiment, referring to fig. 1, an ultrasonic generator 4 is further provided in the upper separation tank 1.

The following description will be made about the main technical means in the present embodiment:

1) adopt vertical, horizontal dual cycle rivers impact bean sprouts, let bean sprouts and skin of beancurd separation: the bean sprouts are impacted by adopting bidirectional circulating water flow, the bean sprouts roll violently in the upper layer separation groove 1, and bean skins are separated. The water pump 15 at the lower part of the device can convey water in the lower circulating water tank 2 upwards, the water is divided into three parts by the four-way device 17 connected to the water outlet of the water pump, one part is divided into three parts which are impacted upwards to form vertical jet flow water columns, so that the liquid level rolls (like boiling water and boiling a pot), bean sprouts roll violently like dumplings in boiled water, and the peeling of the bean sprouts is finished; some (the water jet nozzle arranges in water layer well upper portion, because of preventing to produce the interference to vertical efflux water column, the nozzle is arranged and is being close to a curb wall position) and jets out along top layer bean sprouts traffic direction, promotes top layer bean sprouts and removes to 8 directions of conveyer belt. The other part is divided into four parts, guided to four corner points and ejected along the circumferential direction to form a vertical axis vortex.

Vertical axis vortex action: 1. the bean sprouts on the periphery can draw close to the central water column under the action of the vortex and are rushed to a high place by the water column to roll violently; 2. the water and the bean sprouts are fully collided and mixed, so that the bean skin separation efficiency and the cleaning effect are further improved; 3. the spiral flow can blow up the bean sprouts blocked in the sieve pores of the separating sieve, so as to prevent blockage.

The separation basin adopts the design of fillet rectangle, is convenient for guarantee that horizontal direction hydrologic cycle is unobstructed, and no vortex stagnant water district prevents bean sprouts, skin of beancurd gathering. Bidirectional jet can promote the bean sprouts of putting into roll about and stir and the abundant contact of water and bean sprouts, strengthens the cleaning performance when promoting the skin of beancurd separation.

2) Guarantee bean sprouts skin of beancurd separation efficiency's pressurized-water gyro wheel and the flexible harrow hook of gravity type 6 designs: when peeling off, washing a large amount of bean sprouts, in order to guarantee bean sprouts and skin of beancurd abundant separation, need let float in the abundant submergence in the bean sprouts on top layer, accept rivers and to its impact. Adopt pressurized-water roller design, can impress the bean sprouts that rise above the liquid level in the aquatic, be equipped with the harrow hook on the gyro wheel, can stir the bean sprouts and send to the conveyer belt on, accomplish the pipelining. In order to prevent the bean sprouts from being hooked by the rake hook to generate winding, the rake hook is designed in a gravity type telescopic mode, a heavy object is hung in the center of the rake hook, and under the action of gravity, the rake hook retracts when moving upwards and extends when moving downwards.

3) Based on the image detection technology, the separation effect is rapidly judged: before the detection is started, the image detection module shoots the image to judge the bean sprout species, the size of the upper cotyledon and the like. According to the double-deck separation sieve upper plate of discernment result automatically move, change the separation sieve aperture, prevent that the bean sprouts from dropping.

When the water pump circular telegram, image detection module is used for based on shooting the image, and the analysis obtains the state that rolls of bean sprouts, if the bean sprouts all subsides in the small opening department of separating sieve, steerable change jet nozzle's angle of pitch and jet flow, will sink the end bean sprouts brute force and blow up.

4) Liquid level height control based on upper separation tank and lower circulating water tank water depth data: through the laser range finding method, judge the water depth in upper strata separating tank and the circulating water tank of lower floor, when the interior liquid level of upper strata separating tank does not satisfy the requirement, can adjust through following three kinds of modes:

the falling flow of the water flow is controlled by adjusting the angle of the water baffle;

adjusting the power of the water pump, and changing the pumping quantity of water flow in unit time;

the total water quantity in the adjusting device can realize the inflow of clear water or the discharge of waste water by controlling the water flow inlet and outlet valve, and the total water quantity in the adjusting device.

4) Bean sprouts cleaning module and water quality monitoring data guide trade water based on ultrasonic vibration: in order to solve the incomplete problem of washing of bean sprouts, install the supersound module in outside water storage section of thick bamboo medial surface, the high frequency oscillation signal that sends is converted high frequency mechanical oscillation through the transducer and is propagated to the washing aquatic, produces slight bubble rivers, strikes the bean sprouts, gets rid of harmful substance and remains. In addition, the bi-directional water circulation design is prone to cause harmful substance enrichment. A water quality monitoring module is added in the device to monitor the turbidity of circulating water, the content of harmful substances and the like, and water is automatically changed after a set threshold value is reached.

The main innovation points in the embodiment are as follows:

orthogonal dual-cycle jet flush design. A water pump realizes vertical and horizontal orthogonal jet flow double circulation through a flow guide device, impacts bean sprouts and realizes bud and peel separation; the upper layer separation tank adopts the design of round corner rectangle, does not have the vortex blind spot, prevents the skin of beancurd gathering.

The pressurized-water roller and the gravity type telescopic rake hook are designed. During extensive processing, in order to guarantee bean sprouts and skin of beancurd fully separate, need impress the bean sprouts aquatic, adopt the design of pressurized-water gyro wheel, be equipped with the rake hook on the gyro wheel, can stir the bean sprouts and send to the conveyer belt on, accomplish the pipelining. In order to prevent the harrow hook from hooking the bean sprouts to generate winching, the harrow hook adopts a gravity type telescopic design, retracts when ascending, and extends when descending.

An ultrasonic generator is adopted to generate water flow containing fine bubbles, the water flow impacts the surfaces of the bean sprouts, residual stains and medicine residues are cleaned, and the integration of peeling and cleaning is realized.

The water tank is internally provided with a water quality sensor, a turbidity sensor and the like, pesticide residues are monitored, scientific water changing is guided, and the changed washing water can be stored in the water tank and used for watering flowers and the like.

In specific implementation, the method comprises the following steps:

pouring the bean sprouts into a cleaning device. According to the bean sprouts kind difference, adjust separation screen hole size, open the inlet valve, add sufficient water until level sensor reaches preset position in the lower water tank, start the water pump. The water flow is divided into three parts by the flow guide device, and one part of the water flow is guided to the tail end of the upper layer separation groove and is sprayed out along the advancing direction of the bean sprouts to push the bean sprouts forwards. One part is divided into three parts which are upwards ejected from the bottom of the upper separation groove to form a vertical jet fountain for stirring the bean sprouts. And the other part of water flow is guided to the four corners of the upper layer separation groove and is sprayed out along the circumferential direction of the inner side of the cylinder to form vortex flow, so that bean sprouts are impacted in two directions, and bean skins are promoted to fall off. The bean sprouts are pressed into water by the water pressing roller and are fully soaked, and bean skins fall off. The bean curd skin falls onto the separating sieve along with the action of water flow after falling off, and stays in the bottom groove under the drive of the water flow after passing through the meshes, so that the bean curd skin collection is completed. The rake hook on the pressurized-water roller hooks the bean sprouts to be conveyed to the conveyor belt, after the bean sprouts are detoured by a certain angle, the rake hook retracts under the action of gravity, the other side extends, and the bean sprouts are hooked again. After cleaning one batch, adding bean sprouts again, and peeling the bean sprouts of the next batch. If the water level of the separation tank is limited in the process, the angle of the water baffle between the upper layer water tank and the lower layer water tank can be adjusted, the flow of falling water is controlled, and the water storage amount in the separation tank is ensured. After the washing is carried out for several times, a water quality sensor in the device monitors that the concentration of the enriched pollutants in water is too high, circulating water needs to be replaced, a water pump stops running, a middle-layer water outlet valve is opened, vegetable washing water enters a lower-layer washing water storage tank and can be subsequently used for cooling and the like. When the depth sensor monitors that the water level in the whole device is low, the water inlet valve is opened, clean water is flushed in, and the clean water is supplemented.

While the preferred embodiments of the present invention have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without departing from the broad inventive concept thereof.

Claims (10)

1. The utility model provides a belt cleaning device is peeld to fillet rectangle hydraulic power formula bean sprouts which characterized in that:

comprises an upper layer separation groove (1) vertically separated by a partition plate, a lower layer separation water tank (2) and a pore plate transversely arranged in the upper layer separation groove (1);

the lower layer separation water tank (2) is internally provided with: a first water jet device which extends upwards into the upper layer separation groove (1) and jets water; a second water flow injection device which extends upwards from one side to the middle upper part of the water layer of the upper layer separation tank (1) and transversely injects towards the other side; the third water flow injection device extends upwards into the upper layer separation groove (1), and injects out the water along the circumferential direction at four round corners of the upper layer separation groove (1) to enable the water body to generate vertical axis vortex;

a water pressing roller (3) with a telescopic target hook (6) and a conveying belt (8) which is obliquely arranged and corresponds to the water pressing roller (3) are arranged above the pore plate;

the bean curd sheet collecting device is characterized in that the partition plate is provided with a notch, the notch corresponds to the edge of the pore plate, a water baffle (7) which can turn over and adjust the size of a water falling channel is arranged at the notch, and a bean curd sheet collecting tank (9) is arranged below the water baffle (7).

2. The hydraulic peeling and cleaning device for bean sprouts of claim 1, which is characterized in that a water pump (15) is arranged in the lower separation water tank (2), the water pump (15) can convey water in the lower circulation water tank (2) upwards, the water is divided into three parts through a four-way flow guide pipe (17) connected to the outlet of the water pump, one part is a plurality of first water flow injection devices which impact on the guide pipe to form vertical jet water columns, one part is jetted along the running direction of the surface layer bean sprouts to form second water flow injection devices which push the surface layer bean sprouts to move towards the direction of the conveyor belt (8), the other part is divided into four parts, and the four parts are guided to the four corners of the upper separation tank (1) to form third water flow injection devices which are jetted along the circumferential direction to enable the water body to generate vertical axis vortex.

3. The hydraulic peeling and cleaning device for bean sprouts of claim 2, which is characterized in that the upper layer separation groove (1) is of a round rectangular structure.

4. The rounded rectangular hydraulic peeling and cleaning device for bean sprouts as claimed in claim 1, wherein the water pressing roller (3) is of a hollow structure, part of the water pressing roller is immersed under the liquid level, and the bean sprouts floating above the liquid level can be pressed into the water when rotating along with the water pressing roller (3); the pressurized water roller (3) is provided with the telescopic target hook (6) which can shift bean sprouts to be conveyed onto the conveyor belt (8).

5. The hydraulic peeling and cleaning device for bean sprouts of claim 4, wherein the retractable target hook (6) is designed to be retractable by gravity, and under the action of gravity of a weight hung at the center of the retractable target hook, the rake hook retracts when moving upwards and extends when moving downwards so as to prevent the retractable rake hook from hooking the bean sprouts to generate winching.

6. The hydraulic peeling and cleaning device for bean sprouts of claim 4, further comprising an image processing module (5), wherein the orifice plate is a double-layer sorting sieve plate, the image processing module (5) judges the appearance characteristics of the bean sprouts through image shooting, automatically moves the double-layer sorting sieve plate according to the recognition result, changes the aperture of the sorting sieve and prevents the bean sprouts from falling.

7. The hydraulic peeling and cleaning device for bean sprouts of claim 6, wherein when the water pump is powered on, the image detection module (5) controls to change the pitch angle and the jet flow of the jet nozzle of the first water jet device according to the rolling state image of the bean sprouts if the bean sprouts settle at the holes of the separating screen, so as to strongly blow the bottomed bean sprouts.

8. The hydraulic peeling and cleaning device for bean sprouts with round corners and rectangles as claimed in claim 1, wherein an ultrasonic generator (4) is further arranged in the upper layer separation groove (1).

9. A bean sprout peeling and cleaning method is characterized in that: adopting the rounded rectangular hydraulic bean sprout peeling and cleaning device of any one of claims 1-8; the water depth in the upper separation tank (1) and the lower circulating water tank (2) is judged by a laser ranging method, and when the liquid level in the upper separation tank (1) does not meet the requirement, the water depth is adjusted by the following three ways:

adjusting the flow of falling water: the falling flow of the water flow is controlled by adjusting the angle of the water baffle (7);

adjusting the pumping flow rate of the upper layer separation tank (1): adjusting the power of the water pump (15) and changing the pumping quantity of water flow in unit time;

adjusting the total water amount in the whole device: by controlling the opening of the water flow inlet and outlet valve, the inflow of clear water or the discharge of waste water is realized, and the total water quantity in the device is adjusted.

10. The bean sprout peeling and cleaning method of claim 9, characterized in that: an ultrasonic module is arranged on the inner side surface of an external water storage cylinder for supplying water to the whole device, a high-frequency oscillation signal is transmitted and converted into high-frequency mechanical oscillation through a transducer to be transmitted into cleaning water, and fine bubble water flow is generated to impact bean sprouts and remove harmful substance residues; simultaneously, add water quality monitoring module in whole device, monitor the turbidity of circulating water, and harmful substance content, reach and change water automatically after setting for the threshold value to avoid the harmful substance enrichment that two-way rivers circulation leads to.

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