阅读说明：本技术 一种西瓜取种系统 (Watermelon seed taking system ) 是由 由守昌 杨猛 邢石磊 杨珊 辛国凤 王纪磊 于 2020-03-25 设计创作，主要内容包括：本发明公开了一种西瓜取种系统,涉及西瓜取种设备技术领域,包括用于切半西瓜持续输送的进料装置、用于切半西瓜的皮瓤分离的取瓤装置、用于输送出出瓜皮瓜皮的输出装置、用于将切半西瓜在进料装置、取瓤装置以及瓜皮输出装置之间转移的夹取转移机构,取瓤装置包括取瓤箱,取瓤箱的内侧设有由旋转升降机构驱动的取瓤刀,取瓤箱的底部连接搅拌装置,搅拌装置内置搅拌组件,搅拌装置底部连接有筛洗装置。本发明解决了现有技术中西瓜取种效率低、净含量低的技术问题,本发明实现高效取种,取种的成品净含量高,对西瓜种的损害小,另外获取的副产物—西瓜浆液可供食用,浪费量极低。(The invention discloses a watermelon seed taking system, which relates to the technical field of watermelon seed taking equipment and comprises a feeding device for continuously conveying half-cut watermelons, a pulp taking device for separating skins and pulps of the half-cut watermelons, an output device for conveying the skins and the peels of the outgoing watermelons, and a clamping and transferring mechanism for transferring the half-cut watermelons among the feeding device, the pulp taking device and the peel output device. The invention solves the technical problems of low seed taking efficiency and low net content of the traditional Chinese and western melons in the prior art, realizes high-efficiency seed taking, has high net content of the seed-taking finished product and little damage to watermelon seeds, and obtains the byproduct, namely watermelon pulp which can be eaten, and has extremely low waste amount.)

1. A watermelon seed taking system is characterized by comprising:

the feeding device is used for continuously conveying the cut half watermelons;

a pulp taking device for separating the peel and pulp of the half watermelon;

the melon peel output device is used for conveying the melon peels;

the clamping and transferring mechanism is used for transferring the half-cut watermelon among the feeding device, the pulp taking device and the watermelon peel output device;

get the flesh device including getting the flesh case, the inboard of getting the flesh case is equipped with by rotatory elevating system driven gets the flesh sword, the agitating unit is connected to the bottom of getting the flesh case, the built-in stirring subassembly of agitating unit, the agitating unit bottom is connected with the sieve and washes the device.

2. The watermelon seed taking system according to claim 1, wherein the clamping and transferring mechanism comprises a horizontal moving mechanism, a vertical moving mechanism is installed on the action end of the horizontal moving mechanism, a first mounting plate is installed on the action end of the vertical moving mechanism, a second mounting plate is connected below the first mounting plate through a connecting plate, a first linear driving mechanism is fixedly connected onto the second mounting plate, the action end of the first linear driving mechanism is arranged downwards, at least three swing arms arranged around the center of the mounting plate are hinged to the outer side of the second mounting plate, the tops of the swing arms are hinged to the action end of the first linear driving mechanism, and clamping blocks are fixedly connected to the bottom ends of the swing arms.

3. The watermelon seed taking system according to claim 2, wherein the bottom end of the swing arm is provided with a slot, the slot is arranged in a downward inclination manner from the outer side to the inner side of the swing arm, the clamping block is inserted into the slot, the swing arm is screwed with a locking bolt for locking the clamping block, and the top surface of the clamping block is a tooth-shaped surface.

4. The watermelon seed taking system according to claim 3, wherein a limiting sleeve is arranged at the bottom end of the second mounting plate, a second linear driving mechanism is arranged in the limiting sleeve, the action end of the second linear driving mechanism is arranged downwards, a vertically arranged telescopic rod is fixedly connected to the action end of the second linear driving mechanism, and a barb is fixedly connected to the bottom end of the telescopic rod.

5. The watermelon seed taking system according to claim 1, wherein the flesh taking knife comprises a rotating rod vertically fixedly connected with the action end of the rotary lifting mechanism, blades are fixedly connected to the outer wall of the top of the rotating rod along the radial direction, a plurality of blades are axially arranged, and the radial extension lengths of the blades are gradually decreased from top to bottom.

6. The watermelon seed taking system according to claim 5, wherein said knife blade comprises an arc-shaped knife body and a fixed sleeve, said fixed sleeve is sleeved with said rotating rod, the top end of said arc-shaped knife body is hinged with the side part of said fixed sleeve, and a spring is connected between the opposite sides of said arc-shaped knife body and said fixed sleeve.

7. The watermelon seed-taking system according to claim 6, wherein the transverse section of the outer blade of said arc-shaped knife body is arc-shaped.

8. The watermelon seed picking system according to claim 5, wherein said rotating rod is provided with a plurality of water spraying holes arranged along the axial direction, and said water spraying holes are connected with the high pressure water tank.

9. The watermelon seed taking system according to claim 1, wherein the screening device comprises a screening box, a feeding hole is arranged at the top of the screening box, a first screen and a second screen are obliquely arranged in the screening box, the first screen is positioned above the second screen, a first screen basket is connected to the bottom of the first screen through a channel, a second screen basket is connected to the bottom of the second screen through a channel, and a first spray head is arranged towards the top of the first screen and a second spray head is arranged towards the top of the second screen.

10. The watermelon seed taking system according to claim 9, wherein a guide plate is obliquely arranged in the screening and washing box, the bottom end of the guide plate is arranged towards the top of the first screen, and a third spray head is arranged towards the top of the guide plate at the top of the screening and washing box.

Technical Field

The invention relates to the field of watermelon seed taking equipment, in particular to a watermelon seed taking system.

Background

The watermelon seeds are present in the pulp inside the watermelon, the watermelon seed taking is a necessary step for realizing the watermelon seed processing, the watermelon seed taking treatment is required no matter the watermelon seeds are made into dry products or the subsequent fine and deep processing, the watermelon seed taking treatment at the current stage almost completely depends on manual work, and the problems of low efficiency and large workload exist.

The existing watermelon seed taking machine adopts the following problems that the watermelon pulp and the watermelon peel are crushed together:

1. the separation effect is poor when the slag and the seeds are mixed, the seed taking efficiency is low, the net content of the watermelon seeds is low, and the produced watermelon juice cannot be used;

2. when the watermelon seeds are crushed, the watermelon seeds are easily damaged, and the quality of the watermelon seeds is seriously influenced.

Disclosure of Invention

Aiming at the defects, the invention aims to provide a watermelon seed taking system and aims to solve the technical problems of low seed taking efficiency and low net content of the traditional Chinese and western watermelons in the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a watermelon seed taking system comprises a feeding device, a seed taking device and a seed taking device, wherein the feeding device is used for cutting half watermelons and continuously conveying the watermelons; a pulp taking device for separating the peel and pulp of the half watermelon; the melon peel output device is used for conveying the melon peels; the clamping and transferring mechanism is used for transferring the half-cut watermelon among the feeding device, the pulp taking device and the watermelon peel output device; get the flesh device including getting the flesh case, the inboard of getting the flesh case is equipped with by the drive of rotatory elevating system gets the flesh sword, gets the bottom of flesh case and connects agitating unit, the built-in stirring subassembly of agitating unit, and the agitating unit bottom is connected with the screen and washes the device.

Wherein, press from both sides and get transfer mechanism and include horizontal migration mechanism, install vertical migration mechanism on horizontal migration mechanism's the action end, install first mounting panel on vertical migration mechanism's the action end, the below of first mounting panel is connected with the second mounting panel through the connecting plate, the rigid coupling has first linear drive mechanism on the second mounting panel, first linear drive mechanism's action end sets up down, the outside of second mounting panel articulates there is at least three swing arm that sets up around the mounting panel center, the top of swing arm articulates on first linear drive mechanism's action end, the bottom rigid coupling of swing arm has the clamp splice.

The bottom end of the swing arm is provided with a slot which is arranged from the outer side to the inner side of the swing arm in a downward inclined mode, the clamping block is inserted into the slot, the swing arm is connected with a locking bolt used for locking the clamping block in a threaded mode, and the top face of the clamping block is a toothed face.

The bottom end of the second mounting plate is provided with a limiting sleeve, a second linear driving mechanism is mounted in the limiting sleeve, the action end of the second linear driving mechanism is arranged downwards, a vertically arranged telescopic rod is fixedly connected to the action end of the second linear driving mechanism, and a barb is fixedly connected to the bottom end of the telescopic rod.

The pulp taking knife comprises a rotating rod vertically and fixedly connected to the action end of the rotary lifting mechanism, knife blades are fixedly connected to the outer wall of the top of the rotating rod along the radial direction, the knife blades are axially distributed in a plurality, and the radial extension lengths of the knife blades are gradually decreased from top to bottom.

Wherein, the blade includes arc cutter body and fixed cover, and fixed cover cup joints with the bull stick, and the top of arc cutter body is articulated with the lateral part of fixed cover, is connected with the spring between the opposite side of arc cutter body and fixed cover.

Wherein, the transverse section of the outer cutting edge of the arc-shaped cutter body is arc-shaped.

Wherein, be equipped with the hole for water spraying that a plurality of was arranged along the axial on the bull stick, the hole for water spraying is connected high pressure water tank.

Wherein, the screening and washing device comprises a screening and washing box, a feed inlet is arranged at the top of the screening and washing box, a first screen and a second screen which are obliquely arranged are arranged in the screening and washing box, the first screen is positioned above the second screen, the bottom of the first screen is connected with a first screen basket through a channel, the bottom of the second screen is connected with a second screen basket through a channel, and a first spray head arranged towards the top of the first screen and a second spray head arranged towards the top of the second screen are further arranged in the screening and washing box.

Wherein, the deflector is installed in the slope of sieve washing incasement, and the bottom of deflector sets up towards the top of first screen cloth, and the third shower nozzle that sets up towards the deflector top is installed at the top of sieve washing case.

After the technical scheme is adopted, the invention has the beneficial effects that:

the watermelon seed taking system comprises a feeding device, a pulp taking device, a watermelon peel output device and a clamping and transferring mechanism, wherein the clamping and transferring mechanism transfers half-cut watermelons among the feeding device, the pulp taking device and the watermelon peel output device, the pulp taking device comprises a pulp taking box, a pulp taking knife driven by a rotary lifting mechanism is arranged on the inner side of the pulp taking box, the bottom of the pulp taking box is connected with a stirring device, a stirring assembly is arranged in the stirring device, and the bottom of the stirring device is connected with a screening and washing device. The watermelon seeds are obtained by efficiently realizing the watermelon seed obtaining of the whole system, the waste of the watermelon seeds is avoided, the damage to the watermelon seeds in the seed obtaining process is reduced, and the watermelon slurry which is a byproduct obtained in addition can be eaten.

Because press from both sides and install first mounting panel on getting the action end of the vertical moving mechanism of transfer mechanism, the below of first mounting panel is connected with the second mounting panel through the connecting plate, the rigid coupling has first linear drive mechanism on the second mounting panel, the outside of second mounting panel articulates there is the at least three swing arm that sets up around the mounting panel center, the top of swing arm articulates in first linear drive mechanism's action end, the bottom rigid coupling of swing arm has the clamp splice, the swing is put towards or dorsad central point in the synchronous orientation of three swing arm of first linear drive mechanism drive, realize clamping function, the swing arm centre gripping is on the outer wall of cutting half watermelon, the clamp splice of the bottom installation of swing arm can keep off and lean on the incision border position of cutting half watermelon, realize cutting half watermelon fast and stable centre gripping, thereby further guaranteed the volume of getting the flesh.

The clamping jaw assembly comprises a clamping jaw assembly, a clamping block, a locking bolt, a clamping jaw and a clamping groove, wherein the clamping jaw assembly is arranged in the clamping groove; the tooth-shaped surface of the clamping block further improves the clamping stability.

Because the bottom of second mounting panel is equipped with the stop collar, installs the straight line actuating mechanism of second in the stop collar, and the action end of straight line actuating mechanism of second sets up down, and the rigid coupling has the telescopic link of vertical setting on the action end of straight line actuating mechanism of second, and the bottom rigid coupling of telescopic link has the barb. The second linear driving mechanism drives the telescopic rod to move downwards, so that the barb can be inserted into the top of the half-cut watermelon, the half-cut watermelon is separated from the first conveying belt, and then the swing arm is controlled to clamp the half-cut watermelon, so that the clamping efficiency and stability are further improved.

Because the flesh taking knife comprises the rotating rod, the blades are fixedly connected to the outer wall of the top of the rotating rod along the radial direction, the blades are arranged in a plurality along the axial direction, and the radial extension lengths of the blades are gradually reduced from top to bottom, so that the cutting parts of the blades are matched with the cambered surface for cutting half watermelons, and more than 90% of flesh can be directly cut by the flesh taking knife.

Because the blade includes arc cutter body and fixed cover, fixed cover cup joints with the bull stick, and the top of arc cutter body is articulated with the lateral part of fixed cover, is connected with the spring between the opposite side of arc cutter body and fixed cover. The elastic support for the arc-shaped cutter body is formed through the spring, so that the hard part of the melon peel cut by the arc-shaped cutter body is avoided, and the subsequent screening and washing of the slurry are facilitated.

Because the outer blade of the arc-shaped cutter body is designed to be arc-shaped in transverse section, the design further reduces the damage of the arc-shaped cutter body to watermelon seeds.

Because the rotating rod is provided with a plurality of water spraying holes which are distributed along the axial direction, the water spraying holes are connected with the high-pressure water tank. The melon pulp is washed by water spraying to further break the melon pulp, and the pulp taking amount is further increased, so that the breaking degree of the melon pulp is increased.

Because the screening and washing device comprises a screening and washing box, a feed inlet is arranged at the top of the screening and washing box, a first screen and a second screen which are obliquely arranged are arranged in the screening and washing box, the first screen is positioned above the second screen, the bottom of the first screen is connected with a first screen basket through a channel, the bottom of the second screen is connected with a second screen basket through a channel, and a first spray head arranged towards the top of the first screen and a second spray head arranged towards the top of the second screen are also arranged in the screening and washing box. The serous fluid mixture is firstly filtered by a first screen, the melon grain tissues in serous fluid are filtered, and the melon grain tissues accumulated on the first screen are washed by a first spray head, so that the melon grain tissues enter a first screen basket; and (3) the primarily filtered pulp enters a second screen, the pulp enters a pulp collecting box through meshes of the second screen, watermelon seeds are left after filtering, and the watermelon seeds are washed into a second sieve basket through a second spray head, so that the watermelon seeds with high net content are sieved.

Because the deflector is installed in the slope of sieve washing incasement, the bottom of deflector sets up towards the top of first screen cloth, and the third shower nozzle that sets up towards the deflector top is installed at the top of sieve washing case, slows down the velocity of flow of thick liquid through the deflector for thick liquid can begin the downstream from the top of second swash plate, has improved the quality of sieve washing.

In conclusion, the invention solves the technical problems of low seed taking efficiency and low net content of the traditional Chinese and western melons in the prior art, realizes high-efficiency seed taking, has high net content of the obtained finished product, causes little damage to watermelon seeds, and obtains the watermelon pulp serving as a byproduct which can be eaten, so that the waste amount is extremely low.

Drawings

FIG. 1 is a schematic structural diagram of a watermelon seed-taking system according to the present invention;

FIG. 2 is a schematic structural view of the jaw assembly of FIG. 1;

FIG. 3 is a schematic diagram of the structure of the flesh removing knife of FIG. 1;

in the figure, the feeding device 1, the first conveying belt 10, the pulp taking device 2, the pulp taking box 20, the rotary lifting mechanism 21, the pulp taking knife 22, the rotating rod 220, the fixing sleeve 221, the arc-shaped knife body 222, the spring 223, the water spraying hole 224, the stirring device 3, the stirring box 30, the stirring component 31, the screening and washing device 4, the screening and washing box 40, the first screen 41, the first nozzle 410, the second screen 42, the second nozzle 420, the guide plate 43, the third nozzle 430, the first screen basket 44, the second screen basket 45, the melon peel output device 5, the second conveying belt 50, the clamping and transferring mechanism 6, the horizontal moving mechanism 60, the vertical moving mechanism 61, the clamping jaw component 62, the first mounting plate 620, the connecting plate 621, the second mounting plate 622, the first linear driving mechanism 623, the swing arm 624, the clamping block 625, the locking bolt 626, the limiting sleeve 627, the second linear driving mechanism 628, the telescopic rod 629 and the barb 630.

Detailed Description

The invention is further elucidated with reference to the drawing.

The orientation referred to in the specification is based on the orientation of the watermelon seed taking system in normal operation, the orientation of the watermelon seed taking system in storage and transportation is not limited, and the orientation only represents relative position relation and does not represent absolute position relation.

As shown in figure 1, the watermelon seed taking system comprises a feeding device 1, a pulp taking device 2, a watermelon peel output device 5 and a clamping and transferring mechanism 6, wherein a discharge hole of the pulp taking device 2 is connected with a feed inlet of a stirring device 3, a discharge hole of the stirring device 3 is connected with a feed inlet of a screening and washing device 4,

the feeding device 1 comprises a first conveyer belt 10, a plurality of half-cut watermelon placing positions are arranged on the first conveyer belt 10 at intervals and used for continuously conveying the half-cut watermelons towards the pulp taking device 2 one by one,

the pulp taking device 2 is used for taking out pulp, and the structure of the pulp taking device comprises a pulp taking box 20, an opening is formed in the top of the pulp taking box 20, a pulp taking knife 22 is arranged in the pulp taking box 20, a rotary lifting mechanism 21 is installed at the bottom of the pulp taking box 20, the pulp taking knife 22 is installed at the action end of the rotary lifting mechanism 21, the rotary lifting mechanism 21 drives the pulp taking knife 22 to lift and rotate, and the sampling knife is used for upwards cutting half watermelon, so that the pulp is separated from the peel of the watermelon, and the pulp is cut into blocks.

The melon peel output device 5 comprises a second conveying belt 50, and a box bucket used for containing melon peels is arranged on the second conveying belt 50 and used for continuously conveying the melon peels out.

The clamping and transferring mechanism 6 is used for clamping and half-cutting watermelons and then transferring among the feeding device 1, the flesh taking device 2 and the watermelon peel output device 5. The clamping and transferring mechanism 6 comprises a horizontal moving mechanism 60, the horizontal moving mechanism 60 is preferably an electric cylinder, a vertical moving mechanism 61 is installed on the action end of the horizontal moving mechanism, the vertical moving mechanism 61 is preferably an air cylinder, and a clamping jaw assembly 62 is installed on the action end of the vertical moving mechanism 61, so that the horizontal and vertical movement of the clamping jaw assembly 62 is realized.

The stirring device 3 comprises a stirring box 30, a stirring assembly 31 is arranged in the stirring box 30, the stirring assembly 31 comprises a stirring shaft, the stirring shaft is driven by a motor to rotate, a plurality of stirring rods are arranged on the stirring shaft along the radial direction, the melon pulp cut up in the pulp taking box 20 enters the stirring box 30, the motor drives the stirring shaft to rotate, so that the melon pulp is continuously stirred into slurry, the watermelon seeds are separated from the melon pulp,

the screening and washing device 4 comprises a screening and washing box 40, a material conveying channel is arranged between the top of the screening and washing box 40 and the bottom of the stirring box 30, a gate valve is arranged on the material conveying channel, and the screening and washing box 40 is used for filtering out serous fluid and remaining watermelon seeds.

When in use, firstly, the watermelon is cut into two halves from the middle by manpower, the watermelon is placed on the half-cut watermelon placing position in a way that the cut faces downwards, and a first conveying belt 10 is conveyed forwards to the position right below the clamping and transferring mechanism 6; the clamping and transferring mechanism 6 moves downwards to clamp and cut half watermelons, then resets, moves horizontally to the position above the pulp taking box 20, moves downwards to enable the half watermelons to enter the pulp taking box 20, the pulp taking knife 22 ascends to cut pulp upwards from the cut of the half watermelons, the blocked pulp continuously enters the stirring box 30 through the bottom of the pulp taking box 20, the residual peel after the pulp is taken is transferred to the box hopper through the clamping and transferring mechanism 6, and the clamping and transferring mechanism 6 resets. After the melon pulp in the stirring box 30 reaches a certain amount, the stirring component 31 is started to stir the melon pulp into slurry, after the stirring is completed, the gate valve is opened, the slurry enters the screening and washing box 40, and watermelon seeds are left after watermelon juice is filtered.

As shown in fig. 2, preferably, the gripper mechanism includes a first mounting plate 620 mounted at the action end of the vertical moving mechanism 61, a second mounting plate 622 is connected below the first mounting plate 620 through a connecting plate 621, a first linear driving mechanism 623 is fixedly connected to the second mounting plate 622, the first linear driving mechanism 623 is preferably a cylinder, a driving rod of the cylinder is arranged downward, at least three swing arms 624 arranged around the center of the mounting plate are connected to the outer side of the second mounting plate 622 through connecting shafts, the top of the swing arms 624 is rotatably connected to the action end of the first linear driving mechanism 623 through the connecting shafts, when the first linear driving mechanism 623 acts, the action end thereof moves up and down, thereby driving the three swing arms 624 to synchronously swing towards or back to the center position, so as to realize the clamping function, the swing arms 624 are clamped on the outer wall of the half watermelon, a clamping block 625 is mounted at the bottom end of the swing arms 624, the clamp blocks 625 are used to stop against the cut edge of the cut watermelon. Realize cutting half quick stable centre gripping of watermelon.

Furthermore, the bottom end of the swing arm 624 is provided with a slot, the slot is arranged in a downward inclination manner from the outer side to the inner side of the swing arm 624, the clamp block 625 is inserted into the slot, the swing arm 624 is screwed with a locking bolt 626, the extension length of the clamp block 625 towards the center direction of the clamping jaw assembly 62 is adjusted by sliding the clamp block 625 in the slot, and the adjusted clamp block 625 is fixed by screwing the locking bolt 626, so that stable clamping of the half-cut watermelon with large appearance difference is met; the top surface of the clamping block 625 is a toothed surface, further improving the stability of clamping.

Further, a limiting sleeve 627 is arranged at the bottom end of the second mounting plate 622, a second linear driving mechanism 628 is installed in the limiting sleeve 627, the second linear driving mechanism 628 is preferably an air cylinder, an action end of the second linear driving mechanism 628 is arranged downward, a vertically arranged telescopic rod 629 is fixedly connected to the action end of the second linear driving mechanism 628, the telescopic rod 629 is driven by the second linear driving mechanism 628 to vertically move, and a barb 630 is fixedly connected to the bottom end of the telescopic rod 629. When the half-cut watermelon is clamped, the clamping and transferring mechanism 6 moves to a position right above the half-cut watermelon located at the corresponding position of the first conveying belt 10, the second linear driving mechanism 628 drives the telescopic rod 629 to move downwards, the barb 630 is inserted into the top of the half-cut watermelon, then the telescopic rod 629 is controlled to move upwards, the half-cut watermelon is separated from the first conveying belt 10, and then the swing arm 624 is controlled to clamp the half-cut watermelon, so that the clamping efficiency is improved; when the melon peels are unloaded, the clamping and transferring mechanism 6 is positioned right above the box bucket, the swing arm 624 is controlled to be opened firstly, then the second linear driving mechanism 628 controls the telescopic rod 629 to move upwards until the melon peels are stopped at the bottom of the limiting sleeve 627, the telescopic rod 629 continues to move upwards, the barb 630 is separated from the melon peels, and the melon peels fall into the box bucket under the action of gravity.

As shown in fig. 3, in order to increase the pulp output amount, the pulp taking knife 22 includes a rotating rod 220 vertically fixed to the action end of the rotary lifting mechanism 21, a plurality of blades are radially installed on the outer wall of the top of the rotating rod 220, the blades are axially arranged, and the radial extension lengths of the blades decrease from top to bottom in sequence, so that the cutting parts of the blades are matched with the arc surface of the half watermelon, and more than 90% of the pulp can be cut by the pulp taking knife 22. The rotary lifting mechanism 21 comprises a motor, a motor shaft of the motor is connected with the rotating rod 220 through a coupler, the motor is installed at the action end of the cylinder, and the motor is controlled to lift through the cylinder, so that the lifting of the flesh taking knife 22 is controlled.

In order to improve the pulp output quality and avoid cutting the hard part of the melon peels, the blade comprises an arc-shaped cutter body 222 and a fixed sleeve 221, the fixed sleeve 221 is sleeved on the rotating rod 220 and is fixed through a jackscrew, the top end of the arc-shaped cutter body 222 is rotatably connected with the side part of the fixed sleeve 221 through a connecting shaft, a spring 223 is connected between the opposite sides of the arc-shaped cutter body 222 and the fixed sleeve 221, an elastic support is formed for the arc-shaped cutter body 222 through the spring 223, and the hard part of the melon peels cut by the arc-shaped cutter body 222 is avoided.

In order to prevent the arc-shaped knife body 222 from cutting watermelon seeds, the transverse section of the outer blade of the arc-shaped knife body 222 is designed to be arc-shaped.

In order to further improve the pulp taking amount and improve the pulp breaking degree, a plurality of water spraying holes 224 distributed along the axial direction are formed in the rotating rod 220, the motor of the rotary lifting mechanism 21 is a through shaft motor, a motor shaft of the through shaft motor is a hollow shaft, the hollow shaft is communicated with the inner cavity of the rotating rod 220, one end of the hollow shaft is connected with the water inlet end of the high-pressure water tank through a sealing bearing, the pulp is washed through water spraying, and the pulp is further broken.

As shown in fig. 1, in order to sieve and wash out the watermelon seeds with high net content, the sieving and washing device 4 comprises a sieving and washing box 40, a feeding hole is arranged at the top of the sieving and washing box 40, a first sieve 41 and a second sieve 42 which are obliquely arranged are arranged in the sieving and washing box 40, the first sieve 41 is used for filtering melon and grain tissues in the pulp, the second sieve 42 is used for filtering the watermelon seeds, the first sieve 41 is positioned above the second sieve 42, the bottom of the first sieve 41 is connected with a first sieve basket 44 through a channel, the bottom of the second sieve 42 is connected with a second sieve basket 45 through a channel, and a first spray nozzle 410 which is arranged towards the top of the first sieve 41 and a second spray nozzle 420 which is arranged towards the top of the second sieve 42 are also arranged in the sieving and washing box 40. The serous fluid mixture is firstly filtered by the first screen 41, the melon-grain tissues in the serous fluid are filtered, and the melon-grain tissues accumulated on the first screen 41 are washed by the first spray head 410, so that the melon-grain tissues enter the first sieve basket 44; the primarily filtered pulp enters the second screen 42, the pulp enters the pulp collection box through the meshes of the second screen 42, the watermelon seeds are left after filtering, and the watermelon seeds are washed into the second sieve basket 45 through the second spray head 420, so that the watermelon seeds with high net content are sieved.

As shown in fig. 1, further, a guide plate 43 is obliquely installed in the screen washing box 40, the bottom end of the guide plate 43 is arranged towards the top of the first screen 41, a third spray head 430 arranged towards the top of the guide plate 43 is installed at the top of the screen washing box 40, the flow velocity of the slurry is reduced through the guide plate 43, so that the slurry can flow downwards from the top of the second inclined plate, and the screen washing quality is improved.

The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.