Multi-stage screening device for food starch production and processing

Abstract

The invention relates to the technical field of screening devices, and discloses a multi-stage screening device for food starch production and processing, comprising a rack for mounting and fixing all structures of the multi-stage screening device for food starch; the supporting foot frames are distributed at the four ends of the rack, and supporting wheels are arranged in the supporting foot frames and used for installing and limiting the arc driving mechanism. The displacement limiting mechanisms are located on the two sides of the rack and used for limiting displacement of the arc driving mechanism. The arc driving mechanism is located at the top of the rack and matched with the limiting wheel and the limiting sliding rail to form the reciprocating swing state of the screening equipment. Through reduction of moisture of starch, overall design and mutual coordination of all functional parts, the raw starch processing efficiency and the quality of a final product are improved, the raw starch processing device is suitable for large-scale production requirements, loss of materials in the processing process is reduced to the maximum extent, and through the double-cone cylinder and a matched discharging mechanism, the production efficiency is improved. And the screened starch can be effectively collected and discharged through a discharge groove, so that the risks of accumulation and blockage are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of screening devices, in particular to a multi-stage screening device for producing and processing food starch. Background Art

[0002] Starch is a high molecular carbohydrate, a polysaccharide formed by the polymerization of glucose molecules. Many chemical properties of starch are similar to those of glucose, but because it is a polymer of glucose, it has its own unique properties. In production, the chemical properties of starch are used to change starch molecules to obtain two important categories of starch deep-processing products. In the production and processing of starch, it is necessary to use a screening device to screen the starch to remove impurities in the starch and improve the quality of the starch.

[0003] Existing starch screening equipment may mainly rely on a single-stage screening mechanism, which limits the screening efficiency and accuracy. Traditional equipment may fail to fully combine drying and dispersion functions, resulting in a high moisture content in the starch after treatment, which is easy to agglomerate and is not conducive to subsequent use or processing. Due to limitations in design or operation methods, uneven conditions occur during material processing. The discharging system of traditional starch screening equipment may have problems of inefficiency or uneven discharging, especially when processing large quantities or highly viscous materials. There are also stability and reliability issues during long-term operation. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a multi-stage screening device for food starch production and processing, which solves the problems faced by existing starch screening equipment, such as low screening efficiency and accuracy, lack of drying and dispersion functions leading to agglomeration, uneven material processing, low discharging efficiency and poor operating stability.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-stage screening device for food starch production and processing, comprising:

[0006] The frame is used for installing and fixing all structures of the food starch multi-stage screening equipment;

[0007] The support legs are distributed at the four ends of the frame, and support wheels are arranged inside for installing and limiting the arc driving mechanism;

[0008] The displacement limiting mechanism is located on both sides of the frame and is used to limit the displacement of the arc driving mechanism;

[0009] The arc driving mechanism is located at the top of the frame, and cooperates with the limiting wheel and the limiting slide rail to form a reciprocating swing shape of the screening equipment;

[0010] The multi-stage screening mechanism is located on the arc driving mechanism, and cooperates with the arc-shaped slide and the fixed frame to complete the multi-stage screening of food starch;

[0011] The feeding and discharging auxiliary mechanism is located on the frame, and cooperates with the primary screen drum, the external ring and the arc-shaped discharge trough to guide the feeding and discharging of the screening;

[0012] The reciprocating driving mechanism is located on the frame and cooperates with the arc-shaped rack to drive the food starch multi-stage screening device to perform swing screening.

[0013] Preferably, the tripods are distributed on the four sides of the top of the frame, the support wheels are rotatably connected to the top of the tripods, the displacement limiting mechanism is arranged on both sides of the frame, the arc driving mechanism is arranged on the top of the frame, the multi-stage screening mechanism is arranged on the arc driving mechanism, the feeding and discharging auxiliary mechanism is arranged on the frame and the multi-stage screening mechanism, and the reciprocating driving mechanism is arranged on the top of the frame.

[0014] Preferably, the displacement limiting mechanism comprises a traction frame, the traction frame is fixedly connected to both sides of the top of the frame, the limiting wheel is rotatably connected to the inside of the frame, and the limiting slide rail is relatively arranged on the inner top of the traction frame.

[0015] Preferably, the arc driving mechanism includes an arc slide, which is arranged as a frame-shaped structure, and has an arc slide rod structure on both sides, the arc slide rod structure of the arc slide is movably connected to the support wheel arranged inside the tripod, the arc slide rods on both sides of the arc slide are movably connected to the corresponding limiting wheels, the arc slide rods on both sides of the arc slide are slidably connected to the corresponding limiting slide rails, the fixing frame is fixedly connected to the side wall of the arc slide away from the frame, and the arc rack is fixedly connected to the middle of the arc slide.

[0016] Preferably, the multi-stage screening mechanism comprises an external discharge cylinder assembly, a primary screening assembly and a secondary screening assembly, wherein the external discharge cylinder assembly is sleeved and movably connected to the outside of the secondary screening assembly, and the secondary screening assembly is sleeved and movably connected to the outside of the primary screening assembly;

[0017] The external discharge cylinder assembly comprises a double cone cylinder, the double cone cylinder is fixedly connected to the side wall of the fixed frame away from the arc-shaped slide, the two sides of the double cone cylinder are fixedly connected to the limit ring, the inner side of the limit ring is fixedly connected to a top contact rod, and the arc-shaped discharge groove is arranged on the side wall of the limit ring;

[0018] The secondary screening assembly includes a secondary screen drum, which is rotatably connected to the inside of the double cone drum through a limiting ring, an arc-shaped slide groove 1 is arranged on both sides of the secondary screen drum, and a top-touch rod 1 is slidably connected to the inside of the arc-shaped slide groove 1, and a dryer 2 is fixedly connected to the side wall of the secondary screen drum in a direction away from the fixed frame, and the dryer 2 extends to the inside of the secondary screen drum, and a position of the side wall of the secondary screen drum away from the dryer 2 is provided with evenly distributed secondary screen holes, and two top-touch rods are fixedly connected to both sides of the secondary screen drum;

[0019] The primary screening assembly includes a primary screen cylinder, the external ring is fixedly connected to both sides of the primary screen cylinder, an arc-shaped slide groove 2 is arranged on the outer side of the external ring, the top touch rod 2 is slidably connected inside the arc-shaped slide groove 2, a dryer 1 is fixedly connected to the side wall of the primary screen cylinder away from the fixed frame, the dryer 1 extends to the inside of the primary screen cylinder, the side wall of the primary screen cylinder away from the dryer 1 has uniformly distributed primary screen holes, and the outer side wall of the primary screen cylinder is fixedly connected to a uniformly distributed knife holder adjacent to the dryer 1, and the side wall of the knife holder is fixedly connected to uniformly distributed crushing needles.

[0020] Preferably, the feeding and discharging auxiliary mechanism includes two groups of relatively arranged supporting and discharging components and injection pipes, the two groups of supporting and discharging components are arranged on both sides of the frame and the multi-stage screening mechanism, the supporting and discharging components are connected with an injection pipe, the injection pipe extends to the interior of the primary screen cylinder, the bottom wall of the injection pipe located inside the primary screen cylinder is provided with a through groove, the top wall at one end of the injection pipe is fixedly connected to an injection bucket, one end of the injection pipe is fixedly connected to an output motor, and the side wall of the injection pipe is also fixedly connected to a straight-line knife row at a position adjacent to the through groove, the straight-line knife row is fixedly connected to a straight and evenly distributed arc-shaped paving knife, the injection pipe is rotatably connected to a spiral blade rod, and one end of the spiral blade rod is fixedly connected to the motor shaft of the output motor.

[0021] Preferably, the reciprocating drive mechanism includes a servo motor and a supporting gear frame, the servo motor is fixedly connected to the top of the frame, the side wall of the servo motor is fixedly connected to the guide gear frame, the supporting gear frame is relatively fixedly connected to the top of the frame and is located on both sides of the servo motor, the gear end shaft of the servo motor is fixedly connected to the motor shaft of the guide gear frame, and the gears of the servo motor and the supporting gear frame are meshed and connected to the tooth keys of the arc rack.

[0022] Preferably, the supporting and discharging assembly includes a gantry fixing frame, a bearing disk and a discharge chute, the gantry fixing frame is fixedly connected to both sides of the frame, the bearing disk is fixedly connected to the top of the gantry fixing frame, the discharge chute is fixedly connected to the side wall of the gantry fixing frame and is located below the arc-shaped discharge groove, the bearing disk is rotatably connected to the outer side wall of the external ring, and the injection pipe is fixedly connected between the two groups of bearing disks of the supporting and discharging assembly.

[0023] Preferably, the double-cone cylinder is configured as a cylindrical structure with two tapered sides and open ends.

[0024] Preferably, the inline knife row and the arc-shaped paving knife extend to the interior of the primary screen cylinder, and the outer end of the arc-shaped paving knife is slidably connected to the inner wall of the primary screen cylinder.

[0025] Working principle: First, the multi-stage screening device achieves a reciprocating swinging effect through a fixed-distance arc rotation displacement to complete the multi-stage screening of the internal food starch. The frame serves as the main fixed frame of the overall structure. The four end corners on the top are respectively installed and fixed through support frames to support the support wheels of the arc driving mechanism. The arc slide included in the arc driving mechanism is set as a frame-shaped structure with an arc slide rod structure on both sides. The arc slide is supported by the slide rod structures on both sides and slides on the support wheels fixed on the support wheels. The arc slide rod structure is also supported inside the traction frame included in the displacement limit mechanism, and slides along the limit wheel installed inside the traction frame. At the same time, the limit slide rail installed on the inner side of the top of the traction frame opens and closes and slides on the side arc slide rod structure of the arc slide. , to avoid centrifugal dislocation of the arc driving mechanism during the arc rotation displacement, so that the arc slide linkage whole set of arc driving mechanism can slide along the arc angle direction of the arc slide, and by opening the reciprocating drive mechanism located on the top of the frame, the servo motor contained in it generates a rotational torque to drive the guide gear frame fixed at the output end to rotate, which then drives the arc rack meshing with the guide gear frame to start displacement operation along the supporting gear frame. At the same time, the arc slide drives the fixed frame and the multi-stage screening mechanism installed on the fixed frame to reciprocate along the arc slide. When the multi-stage screening mechanism rotates as a whole, the feed and discharge auxiliary mechanism is relatively stationary inside the multi-stage screening mechanism. The feed and discharge auxiliary mechanism includes two sets of supporting and discharging components, and the two sets of supporting and discharging components are fixed at The frame and both sides of the multi-stage screening mechanism are fixed to both sides of the top of the frame by using the gantry fixing frame included in the support discharging assembly, which is used to install the bearing disk included in the support. The bearing disk is installed on both sides of the primary screen cylinder included in the multi-stage screening mechanism in the form of bearings, and the injection pipe is fixed to the inside of the primary screen cylinder by using the bearing disk. A spiral blade rod driven to rotate by an output motor is installed inside the injection pipe. Raw food starch is added to the injection pipe along the injection bucket installed on the external part of the multi-stage screening mechanism. After the output motor is turned on to generate a rotating torque, the spiral blade rod is driven to rotate inside the injection pipe. The spiral blade rod transports the raw starch added by the injection bucket to the part of the injection pipe located inside the primary screen cylinder, and passes through a straight line through a through groove opened at the bottom of the injection pipe. It falls into the interior of the primary screen drum. With the rotational displacement of the arc driving mechanism, the fixed frame contained therein drives the multi-stage screening mechanism fixed inside to start reciprocating operation. The multi-stage screening mechanism includes an external discharge drum assembly, a primary screening assembly and a secondary screening assembly. The external discharge drum assembly is sleeved on the outside of the secondary screening assembly, and the secondary screening assembly is sleeved on the outside of the primary screening assembly. The limiting ring contained in the external discharge drum assembly is slidably engaged in the arc-shaped chute 1 of the secondary screen drum contained in the secondary screening assembly through the top contact rod 1. The secondary screen drum contained in the secondary screening assembly is slidably engaged in the arc-shaped chute 2 contained in the primary screening assembly through the top contact rod 2. The arc-shaped chute 2 is installed on the external rings on both sides of the primary screen drum. When the primary screen drum and the secondary screen drum rotate back and forth,A screening area with a certain angle will be generated, and on the side walls away from the screening area, the primary screen drum and the secondary screen drum are respectively equipped with a dryer 2 and a dryer 1 which can be heated in a specific direction. The fixed frame first drives the double-cone drum contained in the external discharge drum assembly to rotate reciprocally, and the limit rings and the top-touch rod 1 installed on both sides of the double-cone drum rotate reciprocally accordingly. The top-touch rod 1 synchronously reciprocates inside the arc-shaped slide 1 installed on both sides of the secondary screen drum, while allowing the secondary screen drum body to be stationary for a certain period of time, until the top-touch rod 1 reciprocates and touches the two ends of the arc-shaped slide 1, thereby pushing the secondary screen drum to start reciprocating rotation. The secondary screen drum synchronously reciprocates inside the arc-shaped slide 2 installed on the external rings on both sides of the primary screen drum, while allowing the primary screen drum body to be stationary for a certain period of time. The raw starch in the primary screen drum is spread out and broken up by the arc-shaped paving knife installed on the side wall of the injection tube through the inline knife row. At the same time, the dryer installed on the side wall of the primary screen drum heats and dries the raw starch in the screening area of ​​the primary screen drum to reduce the moisture content of the raw starch for the first time. The primary screen drum is equipped with evenly distributed knife holders and crushing needles toward the outer wall of the secondary screen drum. Because the primary screen drum is relatively stationary for a certain period of time, the stationary knife holder can continuously clump and pulverize the starch after the secondary drying. The powder blocks are broken up and crushed, and the continuously reciprocating primary screen drum screens and filters the scattered and flat raw starch through the primary screen holes installed on the side wall. The raw starch that passes through the screen enters the secondary screen drum included in the secondary screening assembly along the primary screen holes. The side wall of the primary screen drum is in a relative rotation state with respect to the secondary screen drum through the arc-shaped slide groove 2 and the top contact rod 2. The crushing needle spreads and breaks up the raw starch inside the secondary screen drum. At the same time, the dryer 2 installed on the side wall of the secondary screen drum will heat and dry the raw starch in the screening area of ​​the secondary screen drum to reduce the moisture content of the raw starch for the second time. At the same time, the stationary crushing needle can continue to disperse and break the starch after the secondary drying. The continuously reciprocating secondary screen drum screens the scattered and flat raw starch for the second time through the secondary screen holes installed on the side wall. Filtration, through reciprocating rotation, at the same time, the first-level screen drum will form a static state for a certain period of time during the reciprocating process, and screening will be carried out. At the same time, different rotation states will be formed between the screen drums to synchronously perform flattening and breaking operations. Finally, the raw starch is screened and falls into the double-cone cylinder included in the external discharge cylinder assembly. The double-cone cylinder is a relative double-cone cylinder structure. With the reciprocating rotation and shaking of the double-cone cylinder, the screened starch is guided along the double-cone slope structure. At the same time, the secondary screen drum and the double-cone cylinder form a certain screening and falling static time through the arc-shaped slide groove 1 and the top contact rod 1 to avoid excessive accumulation on the inner wall of the double-cone cylinder and block the screening of the secondary screen hole. The reciprocating shaking of the double-cone cylinder makes the starch finally discharged from the double-cone cylinder through the arc-shaped discharge groove installed on the side wall of the limit ring.Finally, the material is recovered by the discharge chute included in the material discharging assembly supported by the material discharging auxiliary mechanism on both sides.

[0026] The present invention provides a multi-stage screening device for food starch production and processing, which has the following beneficial effects:

[0027] 1. The present invention has a reciprocating swing effect: the device uses an arc rotation displacement mechanism to achieve reciprocating swing of the internal multi-stage screening mechanism, which helps to screen the raw starch more evenly and improve the screening efficiency. By setting a primary screening component and a secondary screening component, the raw starch is further screened at the secondary level after passing through the primary screening to ensure the fineness and quality of the starch.

[0028] 2. The present invention has drying and dispersing effects: During the screening process, the device is also equipped with a dryer and a dispersing mechanism (such as a crushing needle and an arc-shaped spreading knife) for drying and breaking up the starch, reducing the moisture content of the starch and improving the quality of the final product. The overall design and the coordinated effect of various functional components improve the processing efficiency of raw starch and the quality of the final product, and are suitable for large-scale production needs.

[0029] 3. The present invention improves production efficiency and processing quality and reduces material loss: The design of the device takes into account the effective transportation and processing of materials. Through the precise displacement and setting of the screening area, the loss of materials in the processing process is minimized. Through the double cone and the matching discharge mechanism, the screened starch can be effectively collected and discharged through the discharge trough, reducing the risk of accumulation and blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The main structure of the present invention is shown in three dimensions. Figure 1 ;

[0031] Figure 2 The main structure of the present invention is shown in three dimensions. Figure 2 ;

[0032] Figure 3 The main structure of the present invention is shown in three dimensions. Figure 3 ;

[0033] Figure 4 It is a schematic diagram of the main structure of the multi-stage screening mechanism of the present invention;

[0034] Figure 5 The cross-sectional view of the multi-stage screening mechanism of the present invention is shown in FIG. Figure 1 ;

[0035] Figure 6 The cross-sectional view of the multi-stage screening mechanism of the present invention is shown in FIG. Figure 2 ;

[0036] Figure 7The cross-sectional view of the multi-stage screening mechanism of the present invention is shown in FIG. Figure 3 ;

[0037] Figure 8 The cross-sectional view of the multi-stage screening mechanism of the present invention is shown in FIG. Figure 4 ;

[0038] Fig. 9 It is a three-dimensional cross-sectional schematic diagram of the main structure of the present invention;

[0039] Fig.10 The structure of the feeding and discharging auxiliary mechanism of the present invention is shown in FIG. Figure 1 ;

[0040] Fig.11 1 is a schematic diagram of the structure of the feeding and discharging auxiliary mechanism of the present invention. 2.

[0041] Among them, 1. frame; 2. foot support; 3. support wheel; 4. displacement limit mechanism; 5. arc driving mechanism; 6. multi-stage screening mechanism; 7. feeding and discharging auxiliary mechanism; 8. reciprocating driving mechanism; 41. traction frame; 42. limit wheel; 43. limit slide rail; 51. arc slide; 52. fixed frame; 53. arc rack; 61. double cone; 62. limit ring; 63. secondary screen cylinder; 64. primary screen cylinder; 65. external ring; 66. arc slide 1; 67. top touch rod 1; 68. arc Slide chute 2; 69, top contact rod 2; 610, primary sieve hole; 611, knife holder; 612, crushing needle; 613, dryer 1; 614, secondary sieve hole; 615, dryer 2; 616, arc discharge chute; 71, gantry fixing frame; 72, bearing plate; 73, discharge ramp; 74, injection pipe; 75, injection bucket; 76, output motor; 77, in-line knife row; 78, arc paving knife; 79, spiral blade rod; 81, servo motor; 82, guide gear rack; 83, support gear rack. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings of the specification 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.

[0043] Please see attached Figure 1 -Attached Figure 3The embodiment of the present invention provides a multi-stage screening device for food starch production and processing, comprising: a frame 1, used for installing and fixing all structures of the food starch multi-stage screening device; a support frame 2 is distributed at the four ends of the frame 1, and a support wheel 3 is arranged inside, which is used to install and limit the arc driving mechanism 5, the support frame 2 is distributed on the four sides of the top of the frame 1, the support wheel 3 is rotatably connected to the top of the support frame 2, the displacement limiting mechanism 4 is arranged on both sides of the frame 1, the arc driving mechanism 5 is arranged on the top of the frame 1, the multi-stage screening mechanism 6 is arranged on the arc driving mechanism 5, the feeding and discharging auxiliary mechanism 7 is arranged on the frame 1 and the multi-stage screening mechanism 6, and the reciprocating driving mechanism 8 is arranged on the top of the frame 1. First, the multi-stage screening device achieves a reciprocating swinging effect through a fixed-distance arc rotation displacement to complete the multi-stage screening of the internal food starch. The frame 1 is the main fixed frame of the overall structure, and the four end corners of the top are respectively installed and fixed by the support frame 2 to support the support wheel 3 for supporting the arc driving mechanism 5;

[0044] Please see attached Figure 1 -Attached Figure 2 The displacement limiting mechanism 4 is located on both sides of the frame 1, and is used to limit the displacement of the arc driving mechanism 5. The displacement limiting mechanism 4 includes a traction frame 41, which is fixedly connected to both sides of the top of the frame 1, and the limiting wheels 42 are rotatably connected to the inside of the frame 1. The limiting slide rails 43 are relatively arranged on the top of the inner side of the traction frame 41. The arc-shaped slide rod structure is also supported inside the traction frame 41 included in the displacement limiting mechanism 4, and slides along the limiting wheels 42 installed inside the traction frame 41. At the same time, the limiting slide rails 43 installed on the inner side of the top of the traction frame 41 open and close and slide on the side arc-shaped slide rod structure of the arc slide 51, so as to avoid centrifugal dislocation of the arc driving mechanism 5 while rotating and displacing the arc;

[0045] Please see attached Figure 1 -Attached Figure 3The arc driving mechanism 5 is located at the top of the frame 1, and cooperates with the limiting wheel 42 and the limiting slide rail 43 to form a reciprocating swinging shape of the screening equipment. The arc driving mechanism 5 includes an arc slide 51, and the arc slide 51 is set as a frame-shaped structure, with arc slide rod structures on both sides. The arc slide rod structure of the arc slide 51 is movably connected to the support wheel 3 set inside the support frame 2. The arc slide rods on both sides of the arc slide 51 are movably connected to the corresponding limiting wheels 42, and the arc slide rods on both sides of the arc slide 51 are slidably connected to the corresponding limiting slide rails 43. The fixed frame 52 is fixedly connected to the arc slide The frame 51 is away from the side wall of the frame 1, and the arc rack 53 is fixedly connected to the middle of the arc slide 51. The arc slide 51 included in the arc driving mechanism 5 is set as a frame-shaped structure, with arc slide rod structures on both sides. The arc slide 51 is supported by the slide rod structures on both sides and slides on the support frame 2 fixed by the support wheel 3, so that the arc slide 51 links the entire set of arc driving mechanism 5 to slide along the arc angle direction of the arc slide 51, and the arc slide 51 drives the fixed frame 52 and the multi-stage screening mechanism 6 installed on the fixed frame 52 to rotate back and forth along the arc slide 51.

[0046] Please see attached Figure 1 -Attached Fig. 9The multi-stage screening mechanism 6 is located on the arc driving mechanism 5, and cooperates with the arc-shaped slide 51 and the fixed frame 52 to complete the multi-stage screening of food starch. The multi-stage screening mechanism 6 includes an external discharge cylinder assembly, a primary screening assembly and a secondary screening assembly. The external discharge cylinder assembly is sleeved and movably connected to the outside of the secondary screening assembly. The secondary screening assembly is sleeved and movably connected to the outside of the primary screening assembly. The external discharge cylinder assembly includes a double cone 61, which is fixedly connected to the side wall of the fixed frame 52 away from the arc-shaped slide 51. The two sides of the double cone 61 are fixedly connected to the limit ring 62, and the inner side of the limit ring 62 is fixedly connected to a top contact rod 67, and the arc discharge groove 616 is arranged on the side wall of the limit ring 62; the secondary screening assembly includes a secondary sieve cylinder 63, and the secondary sieve cylinder 63 passes through the limit The positioning ring 62 is rotatably connected to the inside of the double cone cylinder 61, arc-shaped slide grooves 66 are arranged on both sides of the secondary screen cylinder 63, and a top-touch rod 67 is slidably connected inside the arc-shaped slide groove 66. The side wall of the secondary screen cylinder 63 is fixedly connected with a dryer 615 in a direction away from the fixed frame 52, and the dryer 615 extends to the inside of the secondary screen cylinder 63. The side wall of the secondary screen cylinder 63 is away from the dryer 615. Evenly distributed secondary screen holes 614 are arranged at a position away from the dryer 615, and top-touch rods 69 are fixedly connected on both sides of the secondary screen cylinder 63; the primary screening assembly includes a primary screen cylinder 64, an external ring 65 is fixedly connected to both sides of the primary screen cylinder 64, an arc-shaped slide groove 68 is arranged on the outside of the external ring 65, and the top-touch rod 69 is slidably connected inside the arc-shaped slide groove 68, and the side wall of the primary screen cylinder 64 is away from the fixed frame 52. The fixed frame 52 is fixedly connected to a dryer 613, and the dryer 613 extends to the inside of the primary screen drum 64. The side wall of the primary screen drum 64 is provided with uniformly distributed primary screen holes 610 at a position away from the dryer 613. The outer side wall of the primary screen drum 64 is also fixedly connected to a uniformly distributed knife holder 611 adjacent to the dryer 613. The side wall of the knife holder 611 is fixedly connected to uniformly distributed crushing needles 612. The double-cone cylinder 61 is configured as a cylindrical structure with two sides of cones and openings at both ends. With the rotational displacement of the arc driving mechanism 5, the included fixed frame 52 simultaneously drives the multi-stage screening mechanism 6 fixed on the inside to start reciprocating operation. The multi-stage screening mechanism 6 includes an external discharge cylinder assembly, a primary screening assembly and a secondary screening assembly. The external discharge cylinder The component is sleeved on the outside of the secondary screening component, and the secondary screening component is sleeved on the outside of the primary screening component. The limiting ring 62 contained in the external discharge cylinder component is slidably engaged in the arc-shaped slide groove 1 66 of the secondary screen drum 63 contained in the secondary screening component through the top contact rod 1 67. The secondary screen drum 63 contained in the secondary screening component is slidably engaged in the arc-shaped slide groove 2 68 contained in the primary screening component through the top contact rod 2 69, and the arc-shaped slide groove 2 68 is installed on the external ring 65 on both sides of the primary screen drum 64. When the primary screen drum 64 and the secondary screen drum 63 reciprocate, a screening area of ​​a certain angle will be generated, and the side walls away from the screening area, the primary screen drum 64 and the secondary screen drum 63 are respectively equipped with a dryer 2 615 and a dryer 1 613 that can be heated in a specific direction.The fixing frame 52 first drives the double cone cylinder 61 included in the external discharge cylinder assembly to rotate reciprocally, and the limit rings 62 and the top contact rod 67 installed on both sides of the double cone cylinder 61 rotate reciprocally accordingly, and the top contact rod 67 synchronously rotates reciprocatingly inside the arc-shaped slide groove 66 installed on both sides of the secondary screen cylinder 63, so that the secondary screen cylinder 63 body can be stationary for a certain period of time, until the top contact rod 67 reciprocatingly touches the two ends of the arc-shaped slide groove 66, thereby pushing the secondary screen cylinder 63 to start reciprocating rotation, and the secondary screen cylinder 63 synchronously rotates reciprocatingly inside the arc-shaped slide groove 68 installed on the external rings 65 on both sides of the primary screen cylinder 64, so that the primary screen cylinder 64 body can be stationary for a certain period of time, until the top contact rod 69 reciprocatingly touches the arc-shaped slide groove 69. The two ends of the second slide groove 68 push the primary screen drum 64 to start reciprocating rotation. The raw starch that falls into the primary screen drum 64 along the through groove of the injection pipe 74 reciprocates while the secondary screen drum 63 reciprocates. The arc-shaped spreading knife 78 statically installed on the side wall of the injection pipe 74 through the inline knife row 77 is in a rotating state relative to the primary screen drum 64. The arc-shaped spreading knife 78 spreads and breaks up the raw starch inside the primary screen drum 64. At the same time, the dryer 1 613 installed on the side wall of the primary screen drum 64 heats and dries the raw starch in the screening area of ​​the primary screen drum 64 to reduce the moisture content of the raw starch for the first time. The primary screen drum 64 is equipped with evenly distributed knife holders 611 and crushing needles 612 on the outer side wall of the secondary screen drum 63. After a certain period of relative static factors, the static knife racks 611 and 612 can continuously break up the starch blocks that have been agglomerated and dried twice, and the continuously reciprocating primary screen drum 64 screens and filters the scattered and flattened raw starch through the primary screen hole 610 installed on the side wall. The raw starch that has passed the screening enters the secondary screen drum 63 included in the secondary screening component along the primary screen hole 610. The side wall of the primary screen drum 64 is in a relative rotation state with respect to the secondary screen drum 63 through the arc-shaped slide groove 2 68 and the top contact rod 2 69. The crushing needle 612 spreads and breaks up the raw starch inside the secondary screen drum 63. At the same time, the dryer 2 615 installed on the side wall of the secondary screen drum 63 will heat and dry the raw starch in the screening area of ​​the secondary screen drum 63. The second drying process reduces the moisture content of the raw starch for the second time. At the same time, the stationary crushing needles 612 can continue to disperse and crush the starch after the second drying. The continuously reciprocating secondary screen drum 63 screens and filters the scattered and flattened raw starch for the second time through the secondary screen holes 614 installed on the side wall. The primary screen drum 64 forms a static state for a certain period of time during the reciprocating process to screen and simultaneously utilize the different rotation states formed between the screen drums to synchronously perform the flattening, breaking and crushing operations. Finally, the raw starch is screened and falls into the double cone cylinder 61 included in the external discharge cylinder assembly. The double cone cylinder 61 is a relative double cone cylinder structure. As the double cone cylinder 61 reciprocates and rotates, the screened starch is guided along the double cone slope structure.At the same time, the secondary screen drum 63 and the double cone drum 61 form a certain screening and falling static time through the arc-shaped slide groove 66 and the top contact rod 67, so as to avoid excessive accumulation on the inner wall of the double cone drum 61 and block the screening of the secondary screen hole 614. The reciprocating shaking of the double cone drum 61 makes the starch finally discharged from the double cone drum 61 through the arc-shaped discharge groove 616 installed on the side wall of the limit ring 62, and finally guided by the discharge ramp 73 included in the discharging assembly supported by the feeding and discharging auxiliary mechanism 7 on both sides for recovery.

[0047] Please see attached Figure 1 -Attached Fig.11The feeding and discharging auxiliary mechanism 7 is located on the frame 1, and cooperates with the primary screen drum 64, the external ring 65 and the arc-shaped discharge groove 616 to guide the screening feeding and discharging. The feeding and discharging auxiliary mechanism 7 includes two sets of relatively arranged supporting and discharging components and injection pipes 74. The two sets of supporting and discharging components are arranged on both sides of the frame 1 and the multi-stage screening mechanism 6. An injection pipe 74 is connected between the supporting and discharging components. The injection pipe 74 extends to the inside of the primary screen drum 64. The bottom wall of the injection pipe 74 located inside the primary screen drum 64 is provided with a through groove. The top wall of one end of the injection pipe 74 is fixedly connected to an injection bucket 75. One end of the injection pipe 74 is fixedly connected to an output motor 76. The side wall of the injection pipe 74 is adjacent to The position of the through groove is fixedly connected with a straight knife row 77, and the straight knife row 77 is fixedly connected with a straight and evenly distributed arc-shaped paving knife 78. A spiral blade rod 79 is rotatably connected inside the injection pipe 74, and one end of the spiral blade rod 79 is fixedly connected to the motor shaft of the output motor 76. The support discharge assembly includes a gantry fixing frame 71, a bearing plate 72 and a discharge ramp 73. The gantry fixing frame 71 is fixedly connected to both sides of the frame 1, the bearing plate 72 is fixedly connected to the top of the gantry fixing frame 71, the discharge ramp 73 is fixedly connected to the side wall of the gantry fixing frame 71 and is also located below the arc-shaped discharge groove 616. The bearing plate 72 is rotatably connected to the outer side wall of the external ring 65, and the injection pipe 74 is fixedly connected to the two groups Between the bearing discs 72 of the support discharging assembly, the straight knife row 77 and the arc-shaped paving knife 78 extend to the inside of the primary screen drum 64, and the outer end of the arc-shaped paving knife 78 is slidably connected to the inner wall of the primary screen drum 64. When the multi-stage screening mechanism 6 rotates as a whole, the feed-in and feed-out auxiliary mechanism 7 is relatively stationary inside the multi-stage screening mechanism 6. The feed-in and feed-out auxiliary mechanism 7 includes two groups of support discharging assemblies, and the two groups of support discharging assemblies are fixed on both sides of the frame 1 and the multi-stage screening mechanism 6. The gantry fixing frame 71 included in the support discharging assembly is fixed on both sides of the top of the frame 1 for installing the bearing disc 72 included in the support. The bearing disc 72 is installed in the form of a bearing on the multi-stage screening mechanism 6. The primary sieve drum 64 is included on both sides, and the injection pipe 74 is fixed inside the primary sieve drum 64 by means of a bearing plate 72. A spiral blade rod 79 driven to rotate by an output motor 76 is installed inside the injection pipe 74. An injection bucket 75 installed along the injection pipe 74 located outside the multi-stage screening mechanism 6 is used to add raw food starch into the injection pipe 74. After the output motor 76 is turned on to generate a rotational torque, the spiral blade rod 79 is driven to rotate inside the injection pipe 74. The spiral blade rod 79 transports the raw starch added by the injection bucket 75 to the part of the injection pipe 74 located inside the primary sieve drum 64, and the raw starch falls straight into the first-stage sieve drum 64 through a through groove opened at the bottom of the injection pipe 74.

[0048] Please see attached Figure 1 -Attached Figure 3The reciprocating drive mechanism 8 is located on the frame 1, and cooperates with the arc-shaped rack 53 to drive the food starch multi-stage screening equipment to perform swing screening. The reciprocating drive mechanism 8 includes a servo motor 81 and a supporting gear frame 83. The servo motor 81 is fixedly connected to the top of the frame 1, and the side wall of the servo motor 81 is fixedly connected to the guide gear frame 82. The supporting gear frame 83 is relatively fixedly connected to the top of the frame 1 and is located on both sides of the servo motor 81. The gear end shaft of the servo motor 81 is fixedly connected to the motor shaft of the guide gear frame 82. The gears of the servo motor 81 and the supporting gear frame 83 are meshed and connected to the tooth keys of the arc-shaped rack 53. By opening the reciprocating drive mechanism 8 opened at the top of the frame 1, the servo motor 81 contained therein generates a rotational torque to drive the guide gear frame 82 fixed at the output end to rotate, and then drives the arc-shaped rack 53 meshed with the guide gear frame 82 to start displacement operation along the supporting gear frame 83.

[0049] 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 multi-stage screening device for food starch production and processing, characterized in that: Said include: A frame (1) is used for installing and fixing all structures of the food starch multi-stage screening device; The support legs (2) are distributed at the four ends of the frame (1), and are provided with support wheels (3) inside for installing and limiting the arc driving mechanism (5); The displacement limiting mechanisms (4) are located on both sides of the frame (1) and are used to limit the displacement of the arc driving mechanism (5); The arc driving mechanism (5) is located at the top of the frame (1), and cooperates with the limiting wheel (42) and the limiting slide rail (43) to form a reciprocating swinging shape of the screening device; The multi-stage screening mechanism (6) is located on the arc driving mechanism (5), and cooperates with the arc-shaped slide frame (51) and the fixed frame (52) to complete the multi-stage screening of food starch; The feeding and discharging auxiliary mechanism (7) is located on the frame (1), and cooperates with the primary screen drum (64), the external ring (65) and the arc-shaped discharge groove (616) to guide the feeding and discharging of the screening; The reciprocating drive mechanism (8) is located on the frame (1) and cooperates with the arc-shaped rack (53) to drive the food starch multi-stage screening device to perform swing screening.

2. A multi-stage screening device for food starch production and processing according to claim 1, characterized in that the support frames (2) are distributed on the four sides of the top of the frame (1), the support wheels (3) are rotatably connected to the top of the support frames (2), the displacement limiting mechanism (4) is arranged on both sides of the frame (1), the arc driving mechanism (5) is arranged on the top of the frame (1), the multi-stage screening mechanism (6) is arranged on the arc driving mechanism (5), the feeding and discharging auxiliary mechanism (7) is arranged on the frame (1) and the multi-stage screening mechanism (6), and the reciprocating driving mechanism (8) is arranged on the top of the frame (1).

3. A multi-stage screening device for food starch production and processing according to claim 1, characterized in that the displacement limiting mechanism (4) includes a traction frame (41), the traction frame (41) is fixedly connected to both sides of the top of the frame (1), the limiting wheel (42) is rotatably connected to the inside of the frame (1), and the limiting slide rail (43) is relatively arranged on the inner top of the traction frame (41).

4. A multi-stage screening device for food starch production and processing according to claim 1, characterized in that the arc driving mechanism (5) includes an arc slide (51), the arc slide (51) is arranged as a frame-shaped structure, and the two sides have an arc slide rod structure, the arc slide rod structure of the arc slide (51) is movably connected to the support wheel (3) arranged inside the support frame (2), the arc slide rods on both sides of the arc slide (51) are movably connected to the corresponding limiting wheels (42), the arc slide rods on both sides of the arc slide (51) are slidably connected to the corresponding limiting slide rails (43), the fixed frame (52) is fixedly connected to the side wall of the arc slide (51) away from the frame (1), and the arc rack (53) is fixedly connected to the middle part of the arc slide (51).

5. A multi-stage screening device for food starch production and processing according to claim 1, characterized in that the multi-stage screening mechanism (6) comprises an external discharge cylinder assembly, a primary screening assembly and a secondary screening assembly, the external discharge cylinder assembly is sleeved and movably connected to the outside of the secondary screening assembly, and the secondary screening assembly is sleeved and movably connected to the outside of the primary screening assembly; The external discharge cylinder assembly comprises a double cone cylinder (61), the double cone cylinder (61) is fixedly connected to the side wall of the fixed frame (52) away from the arc-shaped slide frame (51), the two sides of the double cone cylinder (61) are fixedly connected to the limit ring (62), the inner side of the limit ring (62) is fixedly connected to a top contact rod (67), and the arc-shaped discharge groove (616) is arranged on the side wall of the limit ring (62); The secondary screening assembly comprises a secondary screen drum (63), the secondary screen drum (63) is rotatably connected to the inside of the double cone drum (61) through a limit ring (62), arc-shaped slide grooves (66) are arranged on both sides of the secondary screen drum (63), the top contact rod (67) is slidably connected inside the arc-shaped slide grooves (66), the side wall of the secondary screen drum (63) is fixedly connected to a dryer (615) in a direction away from the fixed frame (52), the dryer (615) extends into the inside of the secondary screen drum (63), the side wall of the secondary screen drum (63) is provided with evenly distributed secondary screen holes (614) at a position away from the dryer (615), and the two sides of the secondary screen drum (63) are fixedly connected to a top contact rod (69); The primary screening component comprises a primary screen cylinder (64), the external ring (65) is fixedly connected to both sides of the primary screen cylinder (64), an arc-shaped slide groove 2 (68) is arranged on the outer side of the external ring (65), the top contact rod 2 (69) is slidably connected inside the arc-shaped slide groove 2 (68), a dryer 1 (613) is fixedly connected to the side wall of the primary screen cylinder (64) at a position away from the fixed frame (52), the dryer 1 (613) extends into the primary screen cylinder (64), the side wall of the primary screen cylinder (64) is away from the dryer 1 (613) and has uniformly distributed primary screen holes (610), and the outer side wall of the primary screen cylinder (64) is fixedly connected to a uniformly distributed knife holder (611) at a position adjacent to the dryer 1 (613), and the side wall of the knife holder (611) is fixedly connected to uniformly distributed crushing needles (612).

6. A multi-stage screening device for food starch production and processing according to claim 1, characterized in that the feeding and discharging auxiliary mechanism (7) comprises two sets of supporting and discharging components and injection pipes (74) arranged opposite to each other, the two sets of supporting and discharging components are arranged on both sides of the frame (1) and the multi-stage screening mechanism (6), an injection pipe (74) is connected between the supporting and discharging components, the injection pipe (74) extends to the inside of the primary sieve cylinder (64), and the bottom wall of the injection pipe (74) located inside the primary sieve cylinder (64) is provided with A through groove is provided, the top wall of one end of the injection pipe (74) is fixedly connected to an injection bucket (75), one end of the injection pipe (74) is fixedly connected to an output motor (76), and the side wall of the injection pipe (74) is fixedly connected to a straight knife row (77) at a position adjacent to the through groove, the straight knife row (77) is fixedly connected to arc-shaped paving knives (78) that are evenly distributed in a straight line, and a spiral blade rod (79) is rotatably connected inside the injection pipe (74), and one end of the spiral blade rod (79) is fixedly connected to the motor shaft of the output motor (76).

7. A multi-stage screening device for food starch production and processing according to claim 1, characterized in that the reciprocating drive mechanism (8) includes a servo motor (81) and a supporting gear rack (83), the servo motor (81) is fixedly connected to the top of the frame (1), the side wall of the servo motor (81) is fixedly connected to a guide gear rack (82), the supporting gear rack (83) is relatively fixedly connected to the top of the frame (1) and is located on both sides of the servo motor (81), the gear end shaft of the servo motor (81) is fixedly connected to the motor shaft of the guide gear rack (82), and the gears of the servo motor (81) and the supporting gear rack (83) are meshed and connected to the tooth key of the arc rack (53).

8. A multi-stage screening device for food starch production and processing according to claim 6, characterized in that the supporting and discharging assembly includes a gantry fixing frame (71), a bearing plate (72) and a discharge chute (73), the gantry fixing frame (71) is fixedly connected to both sides of the frame (1), the bearing plate (72) is fixedly connected to the top of the gantry fixing frame (71), the discharge chute (73) is fixedly connected to the side wall of the gantry fixing frame (71) and is located below the arc-shaped discharge groove (616), the bearing plate (72) is rotatably connected to the outer side wall of the external ring (65), and the injection pipe (74) is fixedly connected between the two groups of bearing plates (72) of the supporting and discharging assembly.

9. A multi-stage screening device for food starch production and processing according to claim 5, characterized in that the double-cone cylinder (61) is configured as a cylindrical structure with two conical sides and open at both ends.

10. A multi-stage screening device for food starch production and processing according to claim 6, characterized in that the straight knife row (77) and the arc-shaped paving knife (78) extend to the interior of the primary screen cylinder (64), and the outer end of the arc-shaped paving knife (78) is slidably connected to the inner wall of the primary screen cylinder (64).

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