Grinding equipment for producing potato starch and grinding method thereof

Abstract

The invention belongs to the technical field of starch production, and discloses grinding equipment for producing potato starch and a grinding method thereof.The grinding equipment comprises a machine shell, a feeding port is formed in the top face of the machine shell, a slag outlet and a pulp outlet which are arranged up and down are formed in one side of the machine shell, and the grinding equipment further comprises a grinding mechanism, a filtering mechanism and a fine grinding mechanism. According to the invention, through the arranged grinding mechanism, potatoes are ground after being cut up, so that starch particles are prevented from being damaged by direct grinding, and meanwhile, the grinding mechanism drives the filtering mechanism to filter fibers in potato slurry when working, and through the arranged filtering mechanism, the fibers in the potato slurry are filtered by the filtering mechanism; starch and fibers in potato pulp are separated, and meanwhile, in the working process, the filtering mechanism keeps the highest filtering effect all the time.

Description

Technical Field

[0001] The invention belongs to the technical field of starch production, and in particular relates to grinding equipment and a grinding method for producing potato starch. Background Art

[0002] When producing potato starch, the potatoes need to be washed, and then cut into pieces, crushed, ground, screened, precipitated, and dehydrated to release the potato starch from the potato cells. In the process of crushing and grinding the potatoes, as the fibers in the potato pieces are broken out and fall into the filter below together with the potato slurry, the potato slurry and the fibers are separated. However, as the fibers accumulate on the filter plate, the starch in the potato slurry is intercepted by the fibers and cannot pass through. This requires the subsequent flushing of the fibers to recover the starch particles intercepted by the fibers, thereby reducing the production efficiency of the potato starch. Summary of the invention

[0003] The object of the present invention is to provide a grinding device and a grinding method for producing potato starch to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above object, the present invention provides the following technical solution: a grinding device for producing potato starch, comprising a housing, a top surface of the housing is provided with a feed inlet, a side of the housing is provided with a slag outlet and a slurry outlet arranged up and down, and further comprising:

[0005] A grinding mechanism, the grinding mechanism comprises a rotating shaft penetrating the housing, a rotating sleeve is rotatably mounted on the rotating shaft, two shredding covers are symmetrically arranged on the rotating shaft, one of the shredding covers is fixedly sleeved on the rotating shaft, and the other shredding cover is rotatably mounted on the rotating sleeve, a symmetrical grinding cover and a guide cover are fixedly connected to the inner side of the housing, the grinding cover is located on the inner side of the shredding cover, and the guide cover is located on the outer peripheral surface of the shredding cover, one end of the rotating sleeve is located between the two shredding covers and is fixedly sleeved with a toggle wheel, and a driving mechanism is arranged on the rotating shaft to make the shredding cover and the toggle wheel rotate in opposite directions;

[0006] The filtering mechanism includes a fixed cover fixedly connected to the inner side of the casing, a filter frame is hinged between the two fixed covers, a cross bar parallel to the axis of the rotating shaft is fixedly connected inside the filter frame, a starch groove is opened on the top surface of the filter frame, a first mesh plate is fixedly connected to the top surface of the filter frame, and one end of the starch groove is open and faces the slag outlet.

[0007] Preferably, the driving mechanism includes a first gear fixedly sleeved on the rotating shaft and a second gear rotatably mounted on the rotating sleeve, the shredding cover rotatably mounted on the rotating sleeve is fixedly connected to the second gear, a fifth gear is fixedly sleeved on the rotating sleeve, a third gear and a fourth gear are rotatably mounted on the side of the casing, the third gear is meshed with the first gear, the second gear and the fourth gear, and the fourth gear is meshed with the fifth gear.

[0008] Preferably, the first gear and the second gear are gears with the same number of teeth, and the fourth gear has a smaller number of teeth than the first gear.

[0009] Preferably, a plurality of grinding bars are fixedly connected to the side of the grinding cover facing the shredding cover, a plurality of shredding grooves are provided on the side of the shredding cover, and a plurality of discharge grooves are provided on the outer peripheral surface of the shredding cover.

[0010] Preferably, a plurality of paddle plates are fixedly connected to the outer peripheral surface of the shredding cover, a receiving groove is provided on the inner side surface of the flow guide cover, and a discharge port is provided on the outer side surface of the flow guide cover.

[0011] Preferably, feed troughs that match adjacent discharge ports are provided on both sides of the filter frame, and a second mesh plate is slidably connected to the top surface of the filter frame. The second mesh plate is located directly below the first mesh plate, and a first spring is elastically connected between the side of the second mesh plate away from the slag discharge port and the inner side surface of the starch groove.

[0012] Preferably, a plurality of partition strips are fixedly connected to the inner bottom surface of the starch tank, a counterweight block is fixedly connected to the bottom surface of the filter frame, and a limiting frame is fixedly connected to the interior of the housing, and the limiting frame is located on the bottom surface of the filter frame.

[0013] Preferably, it also includes a fine grinding mechanism, which includes two grinding rollers rotatably installed inside the casing, and the inside of the casing is also fixedly connected with an inclined filter plate, and the filter plate is located between the slag outlet and the pulp outlet.

[0014] A grinding method for producing potato starch comprises the following steps:

[0015] S1, putting potatoes into the casing from the feed inlet, and injecting running water into the casing from the feed inlet;

[0016] S2, using a motor to drive the rotating shaft and the grinding roller to rotate, and the potatoes are cut into pieces by the cutting grooves on the cutting cover;

[0017] S3, the chopped potato pieces enter between the grinding cover and the chopping cover, are ground by the grinding cover, and enter the filtering mechanism from the discharge chute and the discharge port;

[0018] S4, when the toggle wheel rotates, it contacts with the cross bar to make the filter frame rotate and vibrate, so that the starch in the fiber is shaken off to the starch tank below;

[0019] S5. When the filter frame is tilted, the starch in the starch tank is driven by the water flow and leaves from the slurry outlet.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. In the present invention, through the provided grinding mechanism, as potatoes are put into the feed port, the potatoes are squeezed and rubbed with the chopping cover under the toggle of the toggle wheel, and as the potatoes are squeezed with the chopping grooves on the chopping cover and the toggle wheel rotates, the potatoes are cut into strips by the chopping grooves, and as the potato strips enter the chopping cover, they contact with the grinding strips on the grinding cover and are finely ground, and then the finely ground potato pieces fall from the discharge trough into the receiving groove in the guide cover, and as driven by the toggle sheet, they enter the filter frame from the discharge port, and at this time, the finely ground potato pieces are separated and filtered by the first mesh plate, the starch enters the starch groove below, and the fibers remain on the first mesh plate, and at the same time, as the toggle wheel rotates, the toggle wheel will toggle the fibers on the filter frame after approaching the filter frame, thereby preventing the fibers from accumulating and affecting the filtering effect of the first mesh plate, and also preventing the fibers from being stuck on the first mesh plate, so that they cannot be driven by the water flow to leave the filtering mechanism when the filter frame is tilted.

[0022] 2. Secondly, through the designed filtering mechanism, as the toggle wheel rotates, after the toggle wheel contacts the cross bar, the toggle wheel drives the filter frame to rotate through the cross bar. At this time, the end of the filter frame close to the slag outlet tilts downward. At the same time, the second mesh plate slides out under the action of its own weight, thereby blocking the mesh on the first mesh plate, and then the water falling from above will flow through the first mesh plate, so that the water flow carries the broken and filtered fibers along the first mesh plate to the filter plate, and finally the fibers are discharged from the slag outlet. At the same time, as the filter frame rotates, the water in the starch tank will drive the starch particles from the filter. The open part on the rack flows out, and then flows into the bottom of the casing and leaves from the slurry outlet. At the same time, the counterweight block seals the outlet to prevent the potato pieces from falling directly into the casing. As the toggle wheel no longer contacts the cross bar, the filter rack is straightened under the action of the counterweight block. At this time, the filter rack collides with the limit rack, so that the limit remaining on the first screen plate is vibrated and falls off, and then leaves the equipment during the next rotation of the filter rack. At the same time, the vibration of the filter rack will also cause the small potato pieces stuck in the mesh of the first screen plate to be shaken into the starch tank below, preventing the filtration efficiency of the first screen plate from being reduced.

[0023] 3. Finally, by setting up a driving mechanism, when the motor drives the rotating shaft to rotate, the rotating shaft drives the two chopping covers and the toggle wheel to rotate in opposite directions, so that when the potato is driven by the toggle wheel to move, the friction and squeezing force between the potato and the chopping cover is greater, so that the potato is crushed and ground more fully, and at the same time, different gear ratios are used to drive the toggle wheel and the chopping cover to rotate at different speeds, further improving the crushing and cutting effect of the potato, thereby more effectively releasing the starch granules in the potato cells, thereby ensuring the starch extraction effect of the potato. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the casing of the present invention;

[0026] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the grinding mechanism of the present invention;

[0027] Figure 4 For the present invention Figure 3 The enlarged schematic diagram at A in the middle;

[0028] Figure 5 It is a schematic diagram of the structures of the grinding cover, the chopping cover and the guide cover of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the driving mechanism of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the filtering mechanism of the present invention;

[0031] Figure 8 It is a schematic cross-sectional view of the filter mechanism of the present invention;

[0032] Fig. 9 For the present invention Figure 8 Enlarged schematic diagram of point B in the middle.

[0033] In the figure: 1, housing; 11, feed port; 12, slag outlet; 13, pulp outlet; 2, grinding mechanism; 21, rotating shaft; 22, rotating sleeve; 23, toggle wheel; 24, first gear; 25, second gear; 26, third gear; 27, fourth gear; 28, fifth gear; 29, grinding cover; 210, grinding strip; 211, chopping cover; 212, chopping slot; 213, discharge slot; 214 , toggle plate; 215, guide cover; 216, receiving groove; 217, discharge port; 3, filtering mechanism; 31, fixed cover; 32, filter frame; 33, cross bar; 34, feed trough; 35, first mesh plate; 36, second mesh plate; 37, starch groove; 38, dividing strip; 39, counterweight block; 310, first spring; 311, limit frame; 4, fine grinding mechanism; 41, grinding roller; 42, filter plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figures 1 to 9 As shown, an embodiment of the present invention provides a grinding device for producing potato starch, including a housing 1, a top surface of the housing 1 is provided with a feed inlet 11, a side of the housing 1 is provided with a slag outlet 12 and a slurry outlet 13 arranged up and down, and further includes:

[0036] The grinding mechanism 2 includes a rotating shaft 21 that passes through the housing 1, a rotating sleeve 22 is rotatably mounted on the rotating shaft 21, two shredding covers 211 are symmetrically arranged on the rotating shaft 21, one shredding cover 211 is fixedly sleeved on the rotating shaft 21, and the other shredding cover 211 is rotatably mounted on the rotating sleeve 22, a symmetrical grinding cover 29 and a guide cover 215 are fixedly connected to the inner side of the housing 1, the grinding cover 29 is located on the inner side of the shredding cover 211, and the guide cover 215 is located on the outer peripheral surface of the shredding cover 211, one end of the rotating sleeve 22 is located between the two shredding covers 211 and is fixedly sleeved with a toggle wheel 23, and a driving mechanism is arranged on the rotating shaft 21 to make the shredding cover 211 and the toggle wheel 23 rotate in opposite directions;

[0037] The filtering mechanism 3 includes a fixed cover 31 fixedly connected to the inner side of the casing 1, a filter frame 32 is hinged between the two fixed covers 31, a cross bar 33 parallel to the axis of the rotating shaft 21 is fixedly connected inside the filter frame 32, a starch groove 37 is opened on the top surface of the filter frame 32, a first mesh plate 35 is fixedly connected to the top surface of the filter frame 32, and one end of the starch groove 37 is open and faces the slag outlet 12.

[0038] In the present invention, through the grinding mechanism 2, as potatoes are put into the feed port 11, the potatoes are squeezed and rubbed with the chopping cover 211 under the movement of the paddle wheel 23, and as the potatoes are squeezed with the chopping groove 212 on the chopping cover 211 and the paddle wheel rotates, the potatoes are cut into strips by the chopping groove 212, and as the potato strips enter the chopping cover 211, they contact the grinding strips 210 on the grinding cover 29 and are finely ground, and then the finely ground potato pieces fall from the discharge groove 213 into the receiving groove 216 in the guide cover 215, and then The potato pieces are driven by the paddle plate 214 to enter the filter frame 32 from the discharge port 217. At this time, the finely ground potato pieces are separated and filtered by the first mesh plate 35, and the starch enters the starch groove 37 below. The fibers remain on the first mesh plate 35. At the same time, as the paddle wheel 23 rotates, the paddle wheel 23 will paddle the fibers on the filter frame 32 after approaching the filter frame 32, thereby preventing the fibers from accumulating and affecting the filtering effect of the first mesh plate 35, and also preventing the fibers from being stuck on the first mesh plate 35, so that they cannot be driven away from the filter mechanism 3 by the water flow when the filter frame 32 is tilted.

[0039] Secondly, through the designed filtering mechanism 3, as the toggle wheel 23 rotates, after the toggle wheel 23 contacts the cross bar 33, the toggle wheel 23 drives the filter frame 32 to rotate through the cross bar 33. At this time, the end of the filter frame 32 close to the slag outlet 12 tilts downward, and at the same time, the second mesh plate 36 slides out under the action of its own weight, thereby blocking the mesh on the first mesh plate 35, so that the water falling from above will flow through the first mesh plate 35, so that the water flow carries the broken and filtered fibers along the first mesh plate 35 to the filter plate 42, and finally the fibers are discharged from the slag outlet 12. At the same time, as the filter frame 32 rotates, the water in the starch groove 37 drives the starch particles to flow out of the filter frame 3 2, and then flows into the bottom of the casing 1 and leaves from the pulp outlet 13. At the same time, the counterweight block 39 seals the discharge port 217 to prevent the potato pieces from falling directly into the casing 1. As the toggle wheel 23 is no longer in contact with the cross bar 33, the filter frame 32 is re-aligned under the action of the counterweight block 39. At this time, the filter frame 32 collides with the limit frame 311, so that the residual fibers on the first mesh plate 35 are vibrated and fall off, and then leave the equipment during the next rotation of the filter frame 32. At the same time, the vibration of the filter frame 32 will also cause the small potato pieces stuck in the mesh of the first mesh plate 35 to be shaken off into the starch tank 37 below, preventing the filtration efficiency of the first mesh plate 35 from being reduced.

[0040] Finally, by setting up a driving mechanism, when the motor drives the rotating shaft 21 to rotate, the rotating shaft 21 drives the two chopping covers 211 and the toggle wheel 23 to rotate in opposite directions, so that when the potato is driven to move by the toggle wheel 23, the friction and squeezing force between the potato and the chopping cover 211 is greater, so that the potato is crushed and ground more fully, and at the same time, different gear ratios are used to drive the toggle wheel 23 and the chopping cover 211 to rotate at different speeds, further improving the crushing and cutting effect of the potato, thereby more effectively releasing the starch granules in the potato cells, thereby ensuring the starch extraction effect of the potato.

[0041] The driving mechanism includes a first gear 24 fixedly sleeved on the rotating shaft 21 and a second gear 25 rotatably mounted on the rotating sleeve 22. The shredding cover 211 rotatably mounted on the rotating sleeve 22 is fixedly connected to the second gear 25. A fifth gear 28 is fixedly sleeved on the rotating sleeve 22. A third gear 26 and a fourth gear 27 are rotatably mounted on the side of the casing 1. The third gear 26 meshes with the first gear 24, the second gear 25 and the fourth gear 27. The fourth gear 27 meshes with the fifth gear 28. The first gear 24 and the second gear 25 are gears with the same number of teeth, and the number of teeth of the fourth gear 27 is less than that of the first gear 24.

[0042] As the motor drives the rotating shaft 21 to rotate, the rotating shaft 21 drives the first gear 24 to rotate, and through the transmission of the third gear 26, drives the second gear 25 to rotate. At this time, the second gear 25 drives the chopping cover 211 fixed thereto to rotate. At the same time, the third gear 26 also drives the fourth gear 27 meshing therewith to rotate, and the fourth gear 27 drives the fifth gear 28 to rotate. At this time, the fifth gear 28 drives the rotating sleeve 22 fixed thereto to rotate, and the rotating sleeve 22 drives the paddle wheel 23 fixedly sleeved therewith to rotate. With the participation of the fourth gear 27, the paddle wheel 23 and the chopping cover 211 rotate in opposite directions, so that the potatoes are driven by the paddle wheel 23 to rub and squeeze with the chopping cover 211 and are chopped, thereby ensuring the potato chopping effect.

[0043] Among them, the grinding cover 29 is fixedly connected to the side of the shredding cover 211 with multiple grinding strips 210, the side of the shredding cover 211 is provided with multiple shredding grooves 212, the outer peripheral surface of the shredding cover 211 is provided with multiple discharge grooves 213, the outer peripheral surface of the shredding cover 211 is fixedly connected with multiple paddles 214, the inner side surface of the guide cover 215 is provided with a receiving groove 216, and the outer side surface of the guide cover 215 is provided with a discharge port 217.

[0044] As the potatoes are chopped into long strips by the shredding cover 211, the potato strips are squeezed into the space between the grinding cover 29 and the shredding cover 211 by the following potatoes. As the potato strips come into contact with the grinding strips 210, they are ground into potato slurry, thereby releasing the starch particles in the potatoes. At this time, the potato slurry flows along the discharge groove 213 opened on the circumferential surface of the shredding cover 211 into the receiving groove 216 opened on the guide cover 215, and leaves from the discharge port 217 and enters the filter frame 32 under the movement of the paddle plate 214. The starch particles in the potatoes are fully released through the grinding effect of the grinding strips 210, thereby ensuring the extraction effect of the potato starch.

[0045] Among them, feed grooves 34 that match the adjacent discharge port 217 are opened on both sides of the filter frame 32, and the top surface of the filter frame 32 is slidably connected with a second mesh plate 36, and the second mesh plate 36 is located directly below the first mesh plate 35. A first spring 310 is elastically connected between the side of the second mesh plate 36 away from the slag discharge port 12 and the inner side surface of the starch groove 37.

[0046] The sliding connection of the second mesh plate 36 allows the second mesh plate 36 to slide due to its own weight when the end of the filter frame 32 close to the slag outlet 12 tilts downward, thereby causing the second mesh plate 36 to block the mesh on the first mesh plate 35, preventing the fibers from falling from the mesh of the first mesh plate 35 into the starch groove 37 below during the tilting of the filter frame 32, causing the starch groove 37 to be blocked and the starch cannot leave the filter mechanism 3. At the same time, as the second mesh plate 36 blocks the mesh on the first mesh plate 35, the water flow flows from above the first mesh plate 35, so that the water flow can more effectively drive the fibers on the first mesh plate 35 to prevent fiber accumulation.

[0047] Among them, the inner bottom surface of the starch tank 37 is fixedly connected with multiple dividing strips 38, the bottom surface of the filter frame 32 is fixedly connected with a counterweight block 39, and the interior of the casing 1 is fixedly connected with a limiting frame 311, which is located on the bottom surface of the filter frame 32.

[0048] like Figure 7 and Figure 8 As shown, the counterweight block 39 is located on the side of the filter frame 32 away from the slag outlet 12. As the toggle wheel 23 contacts the cross bar 33, the filter frame 32 is driven to rotate. As the toggle wheel 23 continues to rotate and no longer contacts the cross bar 33, the weight of the counterweight block 39 causes the filter frame 32 to return to the center. At this time, one end of the filter frame 32 collides with the limit frame 311, thereby vibrating the fibers remaining on the first mesh plate 35, and then shaking the starch particles in the fibers into the starch groove 37 below, thereby ensuring the extraction effect of potato starch. At the same time, the vibration of the first mesh plate 35 will shake out the small potato pieces stuck in its mesh so that they can be ground by the subsequent fine grinding mechanism 4 to prevent waste and ensure the filtering effect of the first mesh plate 35.

[0049] It also includes a fine grinding mechanism 4, which includes two grinding rollers 41 rotatably mounted inside the casing 1. The casing 1 is also fixedly connected with an inclined filter plate 42, which is located between the slag outlet 12 and the pulp outlet 13.

[0050] The present invention also provides a grinding method for producing potato starch, comprising the following steps:

[0051] S1, putting potatoes into the housing 1 from the feed inlet 11, and injecting running water into the housing 1 from the feed inlet 11;

[0052] S2, using a motor to drive the rotating shaft 21 and the grinding roller 41 to rotate, and the potatoes are cut into pieces by the cutting grooves 212 on the cutting cover 211;

[0053] S3, the chopped potato pieces enter between the grinding cover 29 and the chopping cover 211, are ground by the grinding cover 29, and enter the filtering mechanism 3 from the discharge trough 213 and the discharge port 217;

[0054] S4, when the toggle wheel 23 rotates, it contacts the cross bar 33 to make the filter frame 32 rotate and vibrate, so that the starch in the fiber is shaken off to the starch groove 37 below;

[0055] S5. When the filter frame 32 is tilted, the starch in the starch tank 37 is driven by the water flow and leaves from the slurry outlet 13.

[0056] Working principle:

[0057] When using the present invention, first use a motor to drive the rotating shaft 21 and the grinding roller 41 to rotate. As the rotating shaft 21 rotates, it drives the chopping cover 211 and the paddle wheel 23 to rotate in the opposite direction through the driving mechanism. At this time, washed potatoes are put into the casing 1 from the feed port 11, and flowing water is injected from the feed port 11. As the potatoes are driven by the paddle wheel 23, the potatoes and the chopping cover 211 are rubbed and squeezed to be chopped. Then the chopped potatoes enter between the grinding cover 29 and the chopping cover 211, and are ground into potato slurry by the grinding strips 210. Thereafter, the potato slurry enters the receiving tank 216 and enters the filter frame 32 in the filter mechanism 3 from the discharge port 217 and the feed tank 34.

[0058] As the potato slurry enters the filter frame 32, the starch particles in the potato slurry are filtered by the first mesh plate 35 along with the water flow and enter the starch tank 37, while the fiber and other substances in the potato slurry are filtered by the first mesh plate 35 and stay on the first mesh plate 35. As the toggle wheel 23 rotates and the toggle wheel 23 contacts the cross bar 33, the toggle wheel 23 drives the cross bar 33 to move, thereby causing the filter frame 32 to rotate around its hinge point, and the end of the filter frame 32 close to the slag outlet 12 tilts downward. At this time, the second mesh plate 36 slides downward under the action of its own weight, and the filter frame 32 rotates around its hinge point. The mesh on the first mesh plate 35 is blocked, so that the fibers on the first mesh plate 35 are driven by the water flow and leave the slag outlet 12 along the filter plate 42, and as the filter frame 32 rotates, the starch in the starch groove 37 flows along with the water originally staying in the starch groove 37, and finally leaves the starch groove 37 and falls on the bottom of the casing 1, and then leaves from the slurry outlet 13 with the water flow. During the rotation of the filter frame 32, the counterweight block 39 blocks the discharge port 217, thereby preventing the potato slurry in the receiving groove 216 from directly flowing into the bottom of the casing 1.

[0059] As the toggle wheel 23 continues to rotate, the toggle wheel 23 no longer contacts the cross bar 33. At this time, the filter frame 32 is reset under the drive of the counterweight block 39, and the second mesh plate 36 is reset by the first spring 310. As the filter frame 32 resets and rotates, its bottom collides with the limit frame 311, thereby vibrating the filter frame 32, the first mesh plate 35 and the second mesh plate 36. At this time, the fibers adsorbed on the first mesh plate 35 are vibrated, thereby destroying its adsorption force. At the same time, the small potato pieces in the mesh of the first mesh plate 35 and the second mesh plate 36 are shaken off to prevent them from clogging the mesh and reducing the filtering effect. As the filter frame 32 vibrates, the starch particles precipitated in the starch groove 37 move to prevent the starch particles from being stuck in the starch groove 37. As the equipment works, the above steps are repeated to crush and grind the potatoes to release the starch particles.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding device for producing potato starch, comprising a housing (1), wherein a feed inlet (11) is provided on the top surface of the housing (1), and a slag outlet (12) and a slurry outlet (13) are provided on one side of the housing (1), the device being characterized in that: Also includes: A grinding mechanism (2), the grinding mechanism (2) comprising a rotating shaft (21) penetrating a housing (1), a rotating sleeve (22) being rotatably mounted on the rotating shaft (21), two shredding covers (211) being symmetrically arranged on the rotating shaft (21), one of the shredding covers (211) being fixedly sleeved on the rotating shaft (21), and the other of the shredding covers (211) being rotatably mounted on the rotating sleeve (22), a symmetrical grinding cover (29) and a guide cover (215) being fixedly connected to the inner side surface of the housing (1), the grinding cover (29) being located on the inner side surface of the shredding cover (211), and the guide cover (215) being located on the outer peripheral surface of the shredding cover (211), one end of the rotating sleeve (22) being located between the two shredding covers (211) and being fixedly sleeved with a toggle wheel (23), and a driving mechanism being arranged on the rotating shaft (21) to make the shredding cover (211) and the toggle wheel (23) rotate in opposite directions; A filtering mechanism (3), the filtering mechanism (3) comprising a fixed cover (31) fixedly connected to the inner side of the casing (1), a filtering frame (32) being hinged between the two fixed covers (31), a cross bar (33) parallel to the axis of the rotating shaft (21) being fixedly connected inside the filtering frame (32), a starch groove (37) being provided on the top surface of the filtering frame (32), a first mesh plate (35) being fixedly connected to the top surface of the filtering frame (32), and one end of the starch groove (37) being open and facing the slag outlet (12).

2. A grinding device for producing potato starch according to claim 1, characterized in that: The driving mechanism comprises a first gear (24) fixedly sleeved on a rotating shaft (21) and a second gear (25) rotatably mounted on a rotating sleeve (22); a shredding cover (211) rotatably mounted on the rotating sleeve (22) is fixedly connected to the second gear (25); a fifth gear (28) is fixedly sleeved on the rotating sleeve (22); a third gear (26) and a fourth gear (27) are rotatably mounted on the side of the housing (1); the third gear (26) is meshed with the first gear (24), the second gear (25) and the fourth gear (27); and the fourth gear (27) is meshed with the fifth gear (28).

3. A grinding device for producing potato starch according to claim 2, characterized in that: The first gear (24) and the second gear (25) are gears with the same number of teeth, and the fourth gear (27) has a smaller number of teeth than the first gear (24).

4. A grinding device for producing potato starch according to claim 3, characterized in that: The grinding cover (29) is fixedly connected with a plurality of grinding strips (210) on the side facing the chopping cover (211), the side of the chopping cover (211) is provided with a plurality of chopping grooves (212), and the outer peripheral surface of the chopping cover (211) is provided with a plurality of discharge grooves (213).

5. A grinding device for producing potato starch according to claim 4, characterized in that: A plurality of paddle plates (214) are fixedly connected to the outer peripheral surface of the chopping cover (211), a receiving groove (216) is provided on the inner side surface of the flow guide cover (215), and a discharge port (217) is provided on the outer side surface of the flow guide cover (215).

6. A grinding device for producing potato starch according to claim 5, characterized in that: Both sides of the filter frame (32) are provided with feed grooves (34) that match the adjacent discharge port (217), and the top surface of the filter frame (32) is slidably connected to a second mesh plate (36), and the second mesh plate (36) is located directly below the first mesh plate (35). A first spring (310) is elastically connected between the side of the second mesh plate (36) away from the slag discharge port (12) and the inner side surface of the starch groove (37).

7. A grinding device for producing potato starch according to claim 6, characterized in that: The inner bottom surface of the starch tank (37) is fixedly connected to a plurality of partition bars (38), the bottom surface of the filter frame (32) is fixedly connected to a counterweight block (39), and the interior of the housing (1) is fixedly connected to a limiting frame (311), and the limiting frame (311) is located on the bottom surface of the filter frame (32).

8. A grinding device for producing potato starch according to claim 7, characterized in that: The invention also comprises a fine grinding mechanism (4), wherein the fine grinding mechanism (4) comprises two grinding rollers (41) rotatably mounted inside the casing (1), and an inclined filter plate (42) is fixedly connected to the inside of the casing (1), and the filter plate (42) is located between the slag outlet (12) and the pulp outlet (13).

9. A grinding method for producing potato starch, applied to the aforementioned grinding equipment for producing potato starch, characterized in that: The steps include: S1, putting potatoes into the housing (1) from the feed inlet (11), and injecting running water into the housing (1) from the feed inlet (11); S2, using a motor to drive the rotating shaft (21) and the grinding roller (41) to rotate, and the potatoes are cut into pieces by the cutting grooves (212) on the cutting cover (211); S3, the chopped potato pieces enter between the grinding cover (29) and the chopping cover (211), are ground by the grinding cover (29), and enter the filtering mechanism (3) from the discharge trough (213) and the discharge port (217); S4, when the toggle wheel (23) rotates, it contacts the cross bar (33) to cause the filter frame (32) to rotate and vibrate, so that the starch in the fiber is shaken off to the starch groove (37) below; S5. When the filter frame (32) is tilted, the starch in the starch tank (37) is driven by the water flow and leaves from the slurry outlet (13).

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