Empty screening device for sweet potatoes

Abstract

The invention discloses an empty screening device for sweet potatoes, and relates to the technical field of sweet potatoes. The two connecting plates are symmetrically connected to the inner wall of the bottom of the shell, the vortex-shaped strip is connected between the two connecting plates, the bottom of the centrifugal assembly passes through the middle of the vortex-shaped strip, the middle of the vortex-shaped strip is driven upwards, the middle of the vortex-shaped strip is pulled up, and the plane vortex-shaped strip forms a conical vortex-shaped strip; according to the device, through the arrangement of the air cylinder and the vortex-shaped strips, the air cylinder exhausts air to the vortex-shaped strips, the multiple exhaust holes of the vortex-shaped strips are used for blowing insects adhering to the screen, the insects can be better separated to the edge of the screen under the centrifugal effect of the screen, and therefore the insects can be better separated to the edge of the screen. Meanwhile, the airflow is matched with the centrifugal effect, the insects are pushed into the S-shaped screening distribution pipe to be separated and screened again, meanwhile, the blowing of the airflow blows holes of the screen, and the holes are prevented from being blocked by the sweet potato slurry.

Description

Technical Field

[0001] The invention relates to the technical field of sweet potatoes, and in particular to an empty sieve for sweet potatoes. Background Art

[0002] Sweet potatoes, also known as sweet potatoes and sweet potatoes, are tuberous plants with enlarged roots that store a large amount of starch and sugar. Sweet potatoes are rich in nutritional value, rich in starch, dietary fiber, vitamin A, vitamin C, potassium, iron and other nutrients, and have a sweet taste. They are widely used in food processing, baking, frying and boiling, as well as in making sweet potato powder, sweet potato cakes and other products. After the sweet potatoes are processed, the process of producing sweet potato slurry usually includes the following steps: The harvested sweet potatoes usually need to be washed to remove dirt and impurities. If necessary, they can also be peeled, especially when the inner part of the sweet potato is used in the processing process. The washed or peeled sweet potatoes are cut into small pieces or slices for subsequent processing. In some processing processes, sweet potatoes can also be broken into small pieces or preliminarily crushed by mechanical equipment. In order to make sweet potatoes easier to process, in some cases, they are first steamed or baked. During the heating process, the starch of the sweet potatoes will be partially gelatinized, making them softer and more fragile. The sweet potatoes are further processed into sweet potato mash by mechanical stirring, grinding or juicing equipment. In this way, the cell walls of the sweet potatoes are broken, and the starch and fiber are released during stirring to form sweet potato puree.

[0003] In a Chinese patent (application number: CN202011036788.3), a sweet potato flour processing screening and impurity removal device is disclosed, including a bottom plate and a collecting seat, both sides of the lower end of the bottom plate are fixedly connected with fixed wheels, both sides of the lower end of the bottom plate away from the fixed wheel are fixedly connected with universal wheels, both sides of the middle part of the lower part of the bottom plate are fixedly connected with support mechanisms, the top of the bottom plate is fixedly connected with a collecting seat, the upper end of the collecting seat away from the fixed wheel is fixedly connected with a screening box, and the middle part of the upper end of the screening box away from the fixed wheel is fixedly connected with a feed hopper. The present invention is provided with an outer drum mesh screen and an inner drum mesh screen, which cooperate with a feed drum, a first discharging drum and a second discharging drum, and can screen out fine powder, coarse powder and impurities respectively through the rotation of the outer drum mesh screen and the inner drum mesh screen, and can perform continuous screening work, which greatly improves the screening efficiency and improves the practicality and novelty of the device.

[0004] This patent and the prior art have the following technical problems in actual use:

[0005] 1. Although the patent improves the screening efficiency, the screening device mainly relies on physical screens for screening. However, for sticky sweet potato slurry or materials containing impurities such as insects, the screen may be blocked or the separation may be incomplete. Due to the high viscosity of sweet potato slurry, it is easy to adhere to the surface of the screen, thus affecting the continuity and efficiency of the screening process. The clogging problem of the screen not only reduces the screening efficiency, but also increases the maintenance frequency and operation difficulty of the equipment. The screen may need to be cleaned frequently, which will extend the downtime and affect the production efficiency.

[0006] 2. The device involves a variety of rollers and screen components, which may lead to a complex equipment structure, occupy a large space, and require higher maintenance costs and operating difficulties. Summary of the invention

[0007] The purpose of the present invention is to solve the above problems and provide an empty sieve for sweet potatoes.

[0008] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0009] An empty sieve for sweet potatoes, comprising a shell and a centrifugal assembly, wherein the top port of the shell is connected to a fixed plate, the middle of the fixed plate is fixedly connected to a ring body, the lower surface of the ring body is rotatably connected to a material carrier, and the middle of the ring body is equipped with a centrifugal assembly for driving the material carrier;

[0010] The inner wall of the shell is connected with a flow guide shell, the outer wall of the bottom of the material carrier is provided with a discharge port, and the material carrier is connected with the flow guide shell through the discharge port;

[0011] A discharge assembly is provided at the discharge port of the material carrier;

[0012] Two connecting plates are symmetrically connected to the bottom inner wall of the shell, and a spiral strip is connected between the two connecting plates;

[0013] The bottom of the centrifugal assembly passes through the middle of the vortex strip and drives the middle of the vortex strip upward, the middle of the vortex strip is pulled up, and the plane vortex strip forms a conical vortex strip, and then the middle of the vortex strip moves downward to form a plane vortex strip again;

[0014] The centrifugal assembly extends to the bottom of the vortex bar through the vortex bar, and a screening assembly is installed at the bottom of the centrifugal assembly.

[0015] Furthermore, the centrifugal assembly includes a motor, which is mounted on the upper surface of the fixed plate. The output shaft of the motor passes through the fixed plate and extends to the bottom of the fixed plate. The bottom end of the motor is connected to a connecting shaft, and the material carrier is mounted on the outer wall of the connecting shaft.

[0016] Furthermore, a bidirectional thread groove is provided on the outer wall of the connecting shaft, and the bidirectional thread groove is threadedly connected to the middle part of the spiral strip.

[0017] Further, the screening assembly comprises an S-shaped screening flow pipe, a screen and a conical shell, the screen is installed on the top of the conical shell, the top of the S-shaped screening flow pipe is connected to the screen, and the bottom end of the connecting shaft is connected to the inner wall of the conical shell through a connecting rod;

[0018] The S-shaped screen flow pipe is S-shaped and surrounds the outer side of the conical shell. A plurality of through holes are evenly arranged on the outer wall of the S-shaped screen flow pipe. The middle and edge of the screen form an angle.

[0019] Furthermore, the discharge assembly includes a cylinder, which is mounted on a fixed plate. A connecting rod is connected to the output end of the cylinder, and a ring is connected to the bottom end of the connecting rod. The ring passes through the guide shell and extends to the interior of the guide shell. The ring opens and closes the discharge port of the material carrier.

[0020] Furthermore, the center of the bottom of the material carrier is raised upward.

[0021] Furthermore, four fixing rods are connected to the inner wall of the port of the guide shell, an air cylinder is installed between the four fixing rods, a piston is slidably connected to the inner wall of the air cylinder, a cavity is formed between the piston and the top of the air cylinder, a concave rubber bowl is connected to the upper surface of the piston, the bottom of the piston is connected to an air pipe, a one-way valve is installed inside the air pipe, and the air pipe is connected to the inside of the cavity by penetrating the piston.

[0022] Furthermore, the bottom of the air pipe is communicated with the middle of the vortex strip.

[0023] Furthermore, a plurality of exhaust holes are provided on the lower surface of the vortex strip, and a slope surface is provided on the top of the vortex strip.

[0024] Furthermore, a collecting box is installed at the bottom port of the shell, a plug plate is inserted into the outer wall of the collecting box, a discharge pipe is arranged at the center of the collecting box, the discharge pipe is connected to the conical shell, and the bottom port of the S-shaped screening flow pipe extends to the interior of the collecting box.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. The present invention uses the arrangement of vortex strips. During the process of the centrifugal assembly driving the material carrier to rotate and centrifuge, the middle part of the vortex strips is simultaneously driven to reciprocate up and down. The middle part of the vortex strips is driven upward to form a conical vortex strip. When the middle part of the vortex strips is driven upward, it changes from a plane shape to a conical vortex strip. This change changes the motion trajectory of the fluid, causing the flow velocity, direction and pressure distribution of the fluid to change. The conical structure guides the sweet potato paste and insects in the mixture to move to different areas to promote separation. When the middle part of the vortex strips moves downward, it returns to a plane shape. This reverse The angular movement redistributes the mixture in the structure and enhances the separation effect. The movement of the vortex bars disturbs and stratifies the mixture multiple times, so that the sweet potato puree and the insects are more efficiently separated during this process. The fluid dynamics change caused by the morphological change reduces the time and steps required for traditional solid-liquid separation methods and improves the separation efficiency. At the same time, when the mixed material passes through the vortex bars, the sweet potato puree and the insects are separated before they fall onto the screen, avoiding the mixture from falling directly onto the screen. Instead, the mixture is separated in advance and dispersed on the upper surface of the screen, which can reduce blockage of the screen.

[0027] 2. The present invention arranges an air cylinder and a vortex strip. The air cylinder exhausts air toward the vortex strip. The several exhaust holes of the vortex strip are used to blow away the insects stuck on the screen. After blowing, the insects can be better separated to the edge of the screen under the centrifugal effect of the screen. At the same time, the airflow cooperates with the centrifugal effect to push the insects to the inside of the S-shaped screening flow tube for re-separation and screening. At the same time, the blowing of the airflow blows the pores of the screen to prevent the sweet potato mud from clogging the pores. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an overall schematic diagram of the present invention;

[0029] Figure 2 is a schematic diagram of the collection box and the housing of the present invention;

[0030] Figure 3 It is a schematic diagram of the collection box of the present invention;

[0031] Figure 4 is a schematic diagram of the screening assembly of the present invention;

[0032] Figure 5 It is a schematic diagram of the internal structure of the material carrier of the present invention;

[0033] Figure 6 It is a schematic diagram of the discharge assembly of the present invention;

[0034] Figure 7 It is a schematic diagram of the guide shell and the air cylinder of the present invention;

[0035] Figure 8 It is a schematic diagram of the screen of the present invention;

[0036] Fig. 9 The spiral strip of the present invention is schematically shown Figure 1 ;

[0037] Fig.10 It is a schematic diagram of the connecting shaft of the present invention;

[0038] Fig.11 The spiral strip of the present invention is schematically shown Figure 2 ;

[0039] Fig.12 The spiral strip of the present invention is schematically shown Figure 3 ;

[0040] Fig.13 It is a schematic diagram of the piston of the present invention.

[0041] Figure numerals: 1. Shell; 2. Collecting box; 3. Centrifugal assembly; 301. Motor; 302. Connecting shaft; 4. Discharge assembly; 401. Cylinder; 402. Connecting rod; 403. Ring; 5. Screening assembly; 51. S-shaped screening flow pipe; 501. Screen; 6. Guide shell; 7. Ring body; 8. Material carrier; 9. Vortex bar; 901. Connecting plate; 10. Air cylinder; 1001. Fixing rod; 1002. Air pipe. DETAILED DESCRIPTION

[0042] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0043] An empty sieve for sweet potatoes according to a preferred embodiment of the present invention will be described in detail below.

[0044] Embodiment 1

[0045] like Figure 1 - Fig.13 As shown, an empty sieve for sweet potatoes comprises a housing 1 and a centrifugal assembly 3, the top port of the housing 1 is connected to a fixed plate, the middle of the fixed plate is fixedly connected to a ring body 7, the lower surface of the ring body 7 is rotatably connected to a material carrier 8, and the middle of the ring body 7 is installed with a centrifugal assembly 3 for driving the material carrier 8;

[0046] The inner wall of the shell 1 is connected to a flow guide shell 6, and a discharge port is provided on the bottom outer wall of the material carrier 8, and the material carrier 8 is connected to the flow guide shell 6 through the discharge port;

[0047] A discharge assembly 4 is provided at the discharge port of the material carrier 8;

[0048] Two connecting plates 901 are symmetrically connected to the bottom inner wall of the housing 1, and a spiral strip 9 is connected between the two connecting plates 901;

[0049] The bottom of the centrifugal assembly 3 passes through the middle of the vortex strip 9 and drives the middle of the vortex strip 9 upward, the middle of the vortex strip 9 is pulled up, and the plane vortex strip 9 forms a conical vortex strip 9;

[0050] The centrifugal assembly 3 extends to the bottom of the vortex bar 9 through the vortex bar 9, and a screening assembly 5 is installed at the bottom of the centrifugal assembly 3;

[0051] The purpose of the above arrangement is that the centrifugal assembly 3 is installed in the middle of the ring body 7, and it can drive the material carrier 8 to rotate. The material carrier 8 is rotatably connected to the lower surface of the ring body 7. When the centrifugal assembly 3 is working, the sweet potato slurry placed in the material carrier 8 will produce a separation effect due to the centrifugal force. Through the centrifugal force of the rotation of the material carrier 8, the solid particles and insects are thrown to the inner edge of the bottom of the material carrier 8. The material at the bottom of the material carrier 8 is discharged by the discharge assembly 4, and flows along the guide shell to the vortex bar 9 and the screening assembly 5. In the process of the centrifugal assembly 3 driving the material carrier 8 to rotate and centrifuge, the middle part of the vortex bar 9 is driven to reciprocate up and down at the same time;

[0052] The middle part of the vortex strip 9 is driven upward to form a conical vortex strip 9. When the middle part of the vortex strip 9 is driven upward, it changes from a plane shape to a conical vortex strip 9. This change changes the movement trajectory of the fluid, causing the flow velocity, direction and pressure distribution of the fluid to change. The conical structure guides the sweet potato paste and insects in the mixture to move to different areas, promoting separation.

[0053] When the middle part of the vortex strip 9 moves downward, it returns to a planar shape. This reverse movement causes the mixture to be redistributed in the structure, enhancing the separation effect.

[0054] The movement of the vortex strips 9 disturbs and layers the mixture multiple times, so that the sweet potato slurry and the insects are more efficiently separated during this process. The fluid dynamics changes caused by the morphological changes reduce the time and steps required for the traditional solid-liquid separation method and improve the separation efficiency.

[0055] The insects separated from the sweet potato puree fall to the screening component 5 together with the sweet potato puree for re-screening and are collected separately after screening.

[0056] Embodiment 2, based on the above embodiment, provides a connecting shaft 302 structure;

[0057] like Figure 4 - Figure 5As shown, the centrifugal assembly 3 includes a motor 301, which is mounted on the upper surface of the fixed plate, and the output shaft of the motor 301 passes through the fixed plate and extends to the bottom of the fixed plate. The bottom end of the motor 301 is connected to a connecting shaft 302, and the material carrier 8 is mounted on the outer wall of the connecting shaft 302;

[0058] The purpose of the above arrangement is that the motor 301 is installed on the upper surface of the fixed plate as a power source. The output shaft of the motor 301 passes through the fixed plate and extends to the bottom. The connecting shaft 302 connected to its bottom end drives the material carrier 8 to rotate. The bidirectional threaded groove on the outer wall of the connecting shaft 302 is threadedly connected to the middle part of the vortex bar 9. When the motor 301 is started, while driving the material carrier 8 to perform centrifugal motion, it will also act on the vortex bar 9.

[0059] A bidirectional thread groove is provided on the outer wall of the connecting shaft 302, and the bidirectional thread groove is threadedly connected with the middle part of the vortex strip 9;

[0060] The purpose of the above arrangement is that when the motor 301 is working, the connecting shaft 302 will drive the middle part of the vortex bar 9 upward or downward during rotation according to the structure of the bidirectional thread groove, depending on the direction of rotation of the thread, so that the planar vortex bar 9 forms a conical vortex bar 9 and reciprocates.

[0061] Embodiment 3, based on the above embodiment, provides an S-shaped screen flow pipe 51 and screen 501 structure;

[0062] like Figure 4 and Figure 8 As shown, the screening assembly 5 includes an S-shaped screening flow pipe 51, a screen 501 and a conical shell, the screen 501 is installed on the top of the conical shell, the top of the S-shaped screening flow pipe 51 is connected to the screen 501, and the bottom end of the connecting shaft 302 is connected to the inner wall of the conical shell through a connecting rod;

[0063] The S-shaped screen flow pipe 51 surrounds the outer side of the conical shell in an S shape, and a plurality of through holes are evenly arranged on the outer wall of the S-shaped screen flow pipe 51;

[0064] The purpose of the above-mentioned arrangement is that when the sweet potato paste and the insects pass through the screen 501, the insects will be screened out due to the existence of the screen 501, and the sweet potato paste will flow out through the gaps of the screen 501 under the action of centrifugation, and the screened insects will enter the S-shaped screening flow tube 51 for further screening. Under the action of centrifugation, the sweet potato paste on the insects will be thrown out through the through holes of the S-shaped screening flow tube 51, and the insects will be discharged along the S-shaped screening flow tube 51.

[0065] The middle and edge of the screen 501 form an angle;

[0066] The purpose of the above arrangement is that when the middle and edge of the screen 501 form an angle, the centrifugal force will cause the material to flow along the slope on the surface of the screen 501. This design helps to quickly guide the insects to the edge of the screen 501, while the liquid will more easily flow to the center of the screen 501 or be discharged.

[0067] The center of the bottom of the material carrier 8 is raised upward;

[0068] The purpose of the above arrangement is that the center of the bottom of the material carrier 8 is raised upwards. This shape helps to disperse the material to the surroundings during the centrifugal process, which is more conducive to centrifugal separation and subsequent screening operations.

[0069] Embodiment 4, based on the above embodiment, provides a gas cylinder 10 structure;

[0070] like Fig. 9 , Fig.10 and Fig.13 As shown, four fixing rods 1001 are connected to the inner wall of the port of the guide shell 6, and a gas cylinder 10 is installed between the four fixing rods 1001. A piston is slidably connected to the inner wall of the gas cylinder 10, and a cavity is formed between the piston and the top of the gas cylinder 10. A concave rubber bowl is connected to the upper surface of the piston, and an air pipe 1002 is connected to the bottom of the piston. A one-way valve is installed inside the air pipe 1002, and the air pipe 1002 is connected to the inside of the cavity by penetrating the piston.

[0071] The purpose of the above arrangement is that when the piston moves downward on the inner wall of the cylinder 10, the gas in the internal cavity of the cylinder 10 is replenished, and when the piston moves upward, the gas inside the cavity is squeezed and discharged through the one-way valve inside the air pipe.

[0072] The bottom of the air pipe 1002 is connected to the middle of the spiral strip 9;

[0073] The purpose of the above arrangement is to allow the exhausted gas to flow toward the interior of the spiral strips 9 .

[0074] Embodiment 5, based on the above embodiment, provides a spiral strip 9 structure;

[0075] like Fig.11 and Fig.12 As shown, the lower surface of the vortex strip 9 is provided with a plurality of exhaust holes, and the top of the vortex strip 9 is provided with a slope surface;

[0076] The purpose of the above-mentioned setting is that a plurality of exhaust holes are used to blow away the insects stuck on the screen 501. After blowing, the insects can be better separated to the edge of the screen 501 under the centrifugal effect of the screen 501. At the same time, the airflow cooperates with the centrifugal effect to push the insects to the inside of the S-shaped screening flow tube 51 for re-separation and screening.

[0077] Embodiment 6, based on the above embodiment, provides a collection box 2 structure;

[0078] like Figure 2 and Figure 3 As shown, a collecting box 2 is installed at the bottom port of the shell 1, a plug plate is plugged into the outer wall of the collecting box 2, a discharge pipe is arranged at the center of the collecting box 2, the discharge pipe is connected to the conical shell, and the bottom port of the S-shaped sieve flow pipe 51 extends to the inside of the collecting box 2;

[0079] The purpose of the above arrangement is that the collecting box 2 collects the insects discharged from the bottom of the S-shaped screening flow pipe 51, and the discharge pipe is used to discharge the sweet potato slurry.

[0080] Embodiment 7, based on the above embodiment, provides a ring 403 structure;

[0081] The discharge assembly 4 includes a cylinder 401, which is mounted on a fixed plate. A connecting rod 402 is connected to the output end of the cylinder 401, and a ring 403 is connected to the bottom end of the connecting rod 402. The ring 403 penetrates the guide shell 6 and extends to the inside of the guide shell 6. The ring 403 opens and closes the discharge port of the material carrier 8.

[0082] The purpose of the above arrangement is to control the connecting rod 402 and the ring 403 to move up and down through the output end of the cylinder 401, so as to open and close the discharge port of the material carrier 8.

[0083] When in use, the motor 301 is started. The motor 301 is used as a power source and is installed on the upper surface of the fixed plate. The output shaft of the motor 301 passes through the fixed plate and extends to the bottom. The connecting shaft 302 connected to the bottom end drives the material carrier 8 to rotate. The bidirectional thread groove on the outer wall of the connecting shaft 302 is threadedly connected to the middle part of the vortex bar 9. When the motor 301 is started, while driving the material carrier 8 to perform centrifugal motion, it also acts on the vortex bar 9, and the processed sweet potato slurry is extracted into the interior of the material carrier 8 through the external slurry extraction equipment;

[0084] The sweet potato slurry placed in the material carrier 8 will produce a separation effect due to the centrifugal force. Through the centrifugal force of the rotation of the material carrier 8, the solid particles and insects are thrown to the inner edge of the bottom of the material carrier 8. The output end of the cylinder 401 is telescopically controlled to control the connecting rod 402 and the ring 403 to move up and down, thereby opening and closing the discharge port of the material carrier 8, so as to discharge the material;

[0085] The discharged material falls toward the vortex strip 9 along the guide shell 6. When the motor 301 is working, the connecting shaft 302 will drive the middle part of the vortex strip 9 upward or downward according to the structure of the bidirectional thread groove during the rotation process, depending on the direction of the thread rotation, so that the plane vortex strip 9 forms a conical vortex strip 9, and the cycle is repeated. When the middle part of the vortex strip 9 is driven upward, it changes from a plane shape to a conical vortex strip 9. This change will change the motion trajectory of the fluid, causing the flow velocity, direction and pressure distribution of the fluid to change. The conical structure will guide the sweet potato paste and insects in the mixture to move to different areas, promoting separation.

[0086] When the middle part of the vortex strip 9 moves downward, it returns to a planar shape. This reverse movement causes the mixture to be redistributed in the structure, enhancing the separation effect.

[0087] The movement of the vortex strips 9 disturbs and layers the mixture multiple times, so that the sweet potato slurry and the insects are more efficiently separated during this process. The fluid dynamics changes caused by the morphological changes reduce the time and steps required for the traditional solid-liquid separation method and improve the separation efficiency.

[0088] When the sweet potato slurry and the insects pass through the screen 501, the insects will be screened out due to the existence of the screen 501, and the sweet potato slurry will flow out through the gaps of the screen 501 under the action of centrifugation. The screened insects enter the S-shaped screening flow pipe 51 for further screening. Under the action of centrifugation, the sweet potato slurry on the insects is thrown out through the through holes of the S-shaped screening flow pipe 51, and the insects are discharged along the S-shaped screening flow pipe 51.

[0089] During the up and down movement of the middle part of the vortex bar 9, the middle part of the vortex bar 9 drives the hard plastic air pipe 1002 to move, and the air pipe 1002 pushes the piston to move. When the piston moves downward on the inner wall of the air cylinder 10, the internal cavity gas of the air cylinder 10 is replenished, and when the piston moves upward, the gas inside the cavity is squeezed, and the gas 1002 is discharged through the one-way valve inside the air pipe. The discharged gas flows to the inside of the vortex bar 9. Several exhaust holes are used to blow the insects stuck on the screen 501. After blowing, the insects can be better separated to the edge of the screen 501 under the centrifugal action of the screen 501. At the same time, the airflow cooperates with the centrifugal action to push the insects to the inside of the S-shaped screening flow tube 51 for separation and screening again. After screening is completed, the collection box 2 collects the insects discharged from the bottom of the S-shaped screening flow tube 51, and the discharge pipe is used to discharge the sweet potato slurry.

[0090] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An empty sieve for sweet potatoes, comprising a housing (1) and a centrifugal assembly (3), characterized in that: The top port of the shell (1) is connected to a fixed plate, the middle of the fixed plate is fixedly connected to a ring body (7), the lower surface of the ring body (7) is rotatably connected to a material carrier (8), and the middle of the ring body (7) is equipped with a centrifugal assembly (3) for driving the material carrier (8); The inner wall of the shell (1) is connected to a flow guide shell (6), the bottom outer wall of the material carrier (8) is provided with a discharge port, and the material carrier (8) is connected to the flow guide shell (6) through the discharge port; A discharge assembly (4) is provided at the discharge port of the material carrier (8); Two connecting plates (901) are symmetrically connected to the inner wall of the bottom of the shell (1), and a spiral strip (9) is connected between the two connecting plates (901); The bottom of the centrifugal assembly (3) passes through the middle of the vortex strip (9) and drives the middle of the vortex strip (9) upward, so that the middle of the vortex strip (9) is pulled up, and the plane vortex strip (9) forms a conical vortex strip (9), and then the middle of the vortex strip (9) moves downward to form a plane vortex strip (9) again; The centrifugal assembly (3) extends to the bottom of the vortex bar (9) through the vortex bar (9), and a screening assembly (5) is installed at the bottom of the centrifugal assembly (3).

2. An empty sieve for sweet potatoes according to claim 1, characterized in that: The centrifugal assembly (3) comprises a motor (301), wherein the motor (301) is mounted on the upper surface of a fixed plate, an output shaft of the motor (301) passes through the fixed plate and extends to the bottom of the fixed plate, a connecting shaft (302) is connected to the bottom end of the motor (301), and the material carrier (8) is mounted on the outer wall of the connecting shaft (302).

3. An empty sieve for sweet potatoes according to claim 2, characterized in that: A bidirectional thread groove is provided on the outer wall of the connecting shaft (302), and the bidirectional thread groove is threadedly connected to the middle part of the spiral strip (9).

4. An empty sieve for sweet potatoes according to claim 2, characterized in that: The screening assembly (5) comprises an S-shaped screening flow pipe (51), a screen (501) and a conical shell, wherein the screen (501) is installed on the top of the conical shell, the top of the S-shaped screening flow pipe (51) is connected to the screen (501), and the bottom end of the connecting shaft (302) is connected to the inner wall of the conical shell via a connecting rod; The S-shaped sieve flow pipe (51) is S-shaped and surrounds the outer side of the conical shell. A plurality of through holes are evenly arranged on the outer wall of the S-shaped sieve flow pipe (51). The middle and edge of the sieve (501) form an angle.

5. An empty sieve for sweet potatoes according to claim 4, characterized in that: The discharge assembly (4) comprises a cylinder (401), wherein the cylinder (401) is mounted on a fixed plate, wherein the output end of the cylinder (401) is connected to a connecting rod (402), wherein the bottom end of the connecting rod (402) is connected to a ring (403), wherein the ring (403) penetrates the guide shell (6) and extends to the interior of the guide shell (6), and the ring (403) opens and closes the discharge port of the material carrier (8).

6. The empty sieve for sweet potatoes according to claim 1, characterized in that: The center of the bottom of the material carrier (8) is raised upward.

7. The empty sieve for sweet potatoes according to claim 1, characterized in that: Four fixing rods (1001) are connected to the inner wall of the port of the guide shell (6), an air cylinder (10) is installed between the four fixing rods (1001), a piston is slidably connected to the inner wall of the air cylinder (10), a cavity is formed between the piston and the top of the air cylinder (10), a concave rubber bowl is connected to the upper surface of the piston, an air pipe (1002) is connected to the bottom of the piston, a one-way valve is installed inside the air pipe (1002), and the air pipe (1002) is connected to the inside of the cavity by penetrating the piston.

8. The empty sieve for sweet potatoes according to claim 7, characterized in that: The bottom of the air pipe (1002) is connected to the middle of the spiral strip (9).

9. An empty sieve for sweet potatoes according to claim 8, characterized in that: The lower surface of the vortex strip (9) is provided with a plurality of exhaust holes, and the top of the vortex strip (9) is provided with a slope surface.

10. The empty sieve for sweet potatoes according to claim 4, characterized in that: A collecting box (2) is installed at the bottom port of the shell (1), a plug plate is plugged into the outer wall of the collecting box (2), a discharge pipe is arranged at the center of the collecting box (2), the discharge pipe is connected to the conical shell, and the bottom port of the S-shaped screening flow pipe (51) extends to the interior of the collecting box (2).

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