CN116550590B

CN116550590B - Chitin red date screening device and method

Info

Publication number: CN116550590B
Application number: CN202310712812.8A
Authority: CN
Inventors: 卢彦鸽; 王书锋; 石霖; 李会敏; 何城
Original assignee: Xingtang County Chitin Red Dates Cooperatives
Current assignee: Xingtang County Chitin Red Dates Cooperatives
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2023-09-26
Anticipated expiration: 2043-06-15
Also published as: CN116550590A

Abstract

The application provides a chitin-red date screening device and a chitin-red date screening method, which belong to the technical field of red date processing equipment and comprise a base, a roller, a driving assembly, a rolling screen assembly and a second spiral blade. The roller is rotatably arranged on the base. The driving component is used for driving the roller to rotate. The rolling screen assembly penetrates through the roller and comprises a first spiral blade and a plurality of screening shafts, the first spiral blade is located between the screening shafts, and the first spiral blade is connected with the screening shafts. The second helical blade is opposite to the first helical blade in rotation direction, and the second helical blade is fixedly connected with the roller. The chitin red date screening device and method provided by the application can avoid the problem of high working strength of manually screening red dates.

Description

Chitin red date screening device and method

Technical Field

The application belongs to the technical field of red date processing equipment, and particularly relates to a chitin and red date screening device and method.

Background

Red date is deeply favored by people for its rich nutrition and dual purposes of medicine and food. The chitin red date can be made into red date tea after the procedures of selecting materials, grading, cleaning and the like. The classification of the chitin red dates is to screen out the chitin red dates within a certain diameter range, and the work intensity is high by manually screening the red dates at present.

Disclosure of Invention

The application aims to provide a chitin-red date screening device and a chitin-red date screening method, and aims to solve the problem that the working strength of manually screening red dates is high.

In a first aspect, an embodiment of the present application provides a chitin-red date screening device, including a base, a roller, a driving assembly, a rolling screen assembly, and a second spiral blade. The cylinder level sets up and rotatable locates on the base, the axial both ends of cylinder are the open end. The driving component is used for driving the roller to rotate. The rolling screen assembly is arranged in the roller in a penetrating mode, an annular gap is formed between the rolling screen assembly and the side wall of the roller, the rolling screen assembly comprises a first helical blade and a plurality of screening shafts, the screening shafts are arranged along the axial direction of the roller and are connected with the roller, the screening shafts are uniformly distributed around the axial lead of the roller, a gap for red dates to pass through is formed between two adjacent screening shafts, the first helical blade is located in a space surrounded by the screening shafts, the first helical blade extends spirally around the axial lead of the roller, and the first helical blade is connected with the screening shafts. The second helical blade is located in the annular gap and extends spirally around a plurality of screening shafts, the second helical blade is opposite to the first helical blade in rotation direction, and the second helical blade is in butt joint with the side wall of the roller and fixedly connected with the side wall of the roller.

Compared with the prior art, the scheme provided by the embodiment of the application has the advantages that the driving component drives the roller to rotate, and the second spiral blade connected with the roller, the screening shafts and the first spiral blade connected with the screening shafts rotate. The red dates are placed in a space surrounded by the screening shafts, the first helical blades push the red dates falling on the screening shafts at the bottom to move towards one end of the roller, the red dates with the diameter larger than the distance between two adjacent screening shafts are pushed towards one end of the roller, the rest red dates leak down between the two adjacent screening shafts and fall into the annular gap, and the second helical blades opposite to the first helical blades in rotation direction push the red dates in the annular gap to move towards the other end of the roller. Therefore, the red dates with different diameters can be screened, and the problem of high working strength of the red dates through manual screening is avoided.

With reference to the first aspect, in one possible implementation manner, the screening shaft includes a screening segment and a connecting segment, the connecting segment is provided with external threads and is shrunk inwards with respect to the circumferential direction of the screening segment, and the rolling screen assembly further includes a sizing plate and a plurality of sliding shafts. The shaping plate is of a circular-ring plate-shaped structure, the shaping plate is coaxially arranged with the roller and fixedly connected with the first helical blade, and the shaping plate is slidably sleeved on all the connecting sections. The plurality of sliding shafts are uniformly distributed around the axial lead of the roller and correspond to the plurality of screening shafts one by one, the sliding shafts are arranged along the radial direction of the roller, the sliding shafts are positioned at one ends of the corresponding screening sections far away from the connecting sections and are fixedly connected with the corresponding screening sections, and the sliding shafts are in sliding connection with the roller. Wherein, every equal threaded connection has a gland nut on the linkage segment, gland nut with screening section cooperation centre gripping shaping board.

With reference to the first aspect, in one possible implementation manner, the rolling screen assembly further includes a plurality of airbags. The screening machine comprises a screening shaft, a plurality of inflatable bags and a plurality of screening shafts, wherein the inflatable bags are in one-to-one correspondence with the screening shafts, the inflatable bags are in strip shapes and sleeved and fixed on the corresponding screening sections, and two ends of each inflatable bag are closed, so that the inflatable bags can be filled with gas.

With reference to the first aspect, in a possible implementation manner, the chitin-red date screening device further includes a connection piece. The connecting piece is circular structure, the axial one end of connecting piece is coaxial wears to locate in the cylinder and with cylinder fixed connection. Wherein the sliding shaft slides into the connecting piece.

In combination with the first aspect, in one possible implementation manner, an annular cavity coaxially arranged with the connecting piece is arranged in the connecting piece, one end of the sliding shaft is positioned in the annular cavity, an air guide cavity communicated with the annular cavity is arranged in the sliding shaft, an air filling cavity is arranged in the screening section, the air filling cavity is communicated with the corresponding air guide cavity, a plurality of air filling holes for enabling the air filling bags to be communicated with the air filling cavities are formed in the side wall of the screening section, and the chitin and red date screening device further comprises an air filling pipe and an annular sealing gasket. One end of the inflation tube is communicated with the annular cavity, and the other end of the inflation tube is used for being connected with an inflation device. The annular sealing gasket is coaxially arranged in the connecting piece in a penetrating way and is attached and fixed with the inner side wall of the connecting piece, and the annular sealing gasket is sleeved outside all the sliding shafts in a sliding way.

With reference to the first aspect, in a possible implementation manner, the annular cavity penetrates through one end of the connecting piece, which is located outside the roller, along an axial direction of the annular cavity, and the chitin-red date screening device further includes a plurality of separation plates, a sealing assembly and a fixing piece. The plurality of division plates are located in the annular cavity and uniformly distributed around the axial lead of the annular cavity, the division plates are in sealing fit with the bottom wall and the two side walls of the annular cavity and are fixedly connected, an inflation space is formed between two adjacent division plates, the plurality of inflation spaces are in one-to-one correspondence with the plurality of sliding shafts, and one end of each sliding shaft is located in the corresponding inflation space so that the air guide cavity is communicated with the corresponding inflation space. The sealing component is of an annular structure, the top of the sealing component is provided with a notch, the sealing component is coaxial and slides to penetrate through the annular cavity, and the sealing component and the partition plate are attached to the end face outside the annular cavity, so that the sealing component covers part of the inflation space. The fixing piece is fixedly connected with the sealing assembly and the base. One end of the inflation tube is fixedly arranged on the sealing assembly and is communicated with one of the inflation spaces covered by the sealing assembly.

With reference to the first aspect, in a possible implementation manner, the chitin-red date screening device further includes an annular stop. The annular stop block is coaxially arranged in the connecting piece in a penetrating way, the outer side wall of the annular stop block is circumferentially attached and fixed with the inner side wall of the connecting piece, and the annular stop block is positioned on one side, far away from the screen section, of the sliding shaft.

With reference to the first aspect, in a possible implementation manner, the sealing assembly includes an arc-shaped sealing gasket and an arc-shaped plate. The arc-shaped sealing gasket is used for being attached to the partition plate. The arc-shaped plate is attached to the surface, deviating from the separation plate, of the arc-shaped sealing pad, and the arc-shaped plate is fixedly connected with the fixing piece and the inflation tube.

With reference to the first aspect, in one possible implementation manner, the driving assembly includes a driving motor and two meshed gears. The driving motor is fixedly arranged on the base. The two meshed gears are respectively sleeved and fixed on the output shaft of the driving motor and the roller.

In a second aspect, an embodiment of the present application further provides a chitin-red-date screening method, using two aforementioned chitin-red-date screening devices, where a diameter of a red date passing between two adjacent screening shafts in a first chitin-red-date screening device is not greater than a maximum value of a red date to be selected, and a diameter of a red date passing between two adjacent screening shafts in a second chitin-red-date screening device is not less than a minimum value of a red date to be selected, including the following steps:

a, starting a driving assembly in the first chitin-red date screening device and the second chitin-red date screening device;

b, placing the red dates to be screened into a space surrounded by a plurality of screening shafts in the first chitin red date screening device, and collecting the red dates pushed out from the annular gap by the second spiral blades in the first chitin red date screening device;

c, putting the red dates collected in the step B into a space surrounded by a plurality of screening shafts in a second chitin red date screening device, and collecting the red dates pushed out by the first spiral blades in the second chitin red date screening device from the space surrounded by the plurality of screening shafts.

Compared with the prior art, in the scheme shown in the embodiment of the application, in the first screening device, the red dates to be screened are placed in a space surrounded by a plurality of screening shafts, when the diameter of the red dates is larger than the maximum value of the red dates to be selected, the red dates are left in the space and pushed to one end of the roller by the first spiral blade, and the rest of the red dates fall into an annular gap between two adjacent screening shafts, and then are collected. In the second screening device, the collected red dates are placed in a space surrounded by a plurality of screening shafts, when the diameter of the red dates is smaller than the minimum value of the red dates to be selected, the red dates fall into the annular gap, the red dates left in the space surrounded by the plurality of screening shafts are the red dates to be selected, and the red dates are collected at the conveying tail end of the first helical blade. Through the operation, the problem of high working strength of the red dates through manual screening can be avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a first axial measurement structure of a chitin-jujube screening device according to an embodiment of the present application;

FIG. 2 is an enlarged schematic view of the portion A in FIG. 1;

fig. 3 is a schematic diagram of a second axial measurement structure of the chitin-red date screening device according to the embodiment of the present application;

FIG. 4 is an enlarged schematic view of the portion B in FIG. 3;

FIG. 5 is a schematic diagram of an axial sectional structure of a chitin-jujube screening device according to an embodiment of the present application;

FIG. 6 is an enlarged schematic view of the portion C in FIG. 5;

FIG. 7 is an enlarged schematic view of the portion D in FIG. 5;

FIG. 8 is a schematic diagram of an axial measurement structure of a connector in a chitin-jujube screening device according to an embodiment of the present application;

fig. 9 is a schematic axial measurement structure diagram of a sealing assembly in a chitin-red date screening device according to an embodiment of the present application.

In the figure: 1. a base; 2. a roller; 31. a driving motor; 32. a gear; 41. an annular gap; 42. a first helical blade; 43. a sieving shaft; 431. screening and sectioning; 4311. an air-filling cavity; 4312. an air filling hole; 432. a connection section; 44. shaping plates; 45. a sliding shaft; 451. an air guide cavity; 46. a compression nut; 47. an inflatable bag; 5. a second helical blade; 6. a connecting piece; 61. an annular cavity; 7. an inflation tube; 8. an annular gasket; 9. a partition plate; 91. an inflation space; 101. an arc-shaped sealing gasket; 102. an arc-shaped plate; 110. a fixing member; 120. an annular stop.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It should be further noted that the drawings and embodiments of the present application mainly describe the concept of the present application, and on the basis of the concept, some specific forms and arrangements of connection relations, position relations, power units, power supply systems, hydraulic systems, control systems, etc. may not be completely described, but those skilled in the art may implement the specific forms and arrangements described above in a well-known manner on the premise of understanding the concept of the present application.

When an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the same sense as the orientation or positional relationship shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" means two or more, and the meaning of "a number" means one or more, unless specifically defined otherwise.

Referring to fig. 1, fig. 2, fig. 5 and fig. 6, the chitin-red date screening device provided by the application will now be described. The chitin and red date screening device comprises a base 1, a roller 2, a driving assembly, a rolling screen assembly and a second spiral blade 5. The roller 2 is horizontally arranged and can be rotatably arranged on the base 1, and both axial ends of the roller 2 are open ends. The driving assembly is used for driving the roller 2 to rotate. The rolling screen assembly is arranged in the roller 2 in a penetrating mode, an annular gap 41 is formed between the rolling screen assembly and the side wall of the roller 2, the rolling screen assembly comprises a first helical blade 42 and a plurality of screening shafts 43, the screening shafts 43 are arranged along the axial direction of the roller 2 and are connected with the roller 2, the screening shafts 43 are uniformly distributed around the axial lead of the roller 2, a gap for red dates to pass through is formed between two adjacent screening shafts 43, the first helical blade 42 is located in a space surrounded by the screening shafts 43, the first helical blade 42 extends spirally around the axial lead of the roller 2, and the first helical blade 42 is connected with the screening shafts 43. The second helical blade 5 is located in the annular gap 41 and extends helically around the plurality of screening shafts 43, the second helical blade 5 is counter-rotating to the first helical blade 42, and the second helical blade 5 abuts against and is fixedly connected to the side wall of the drum 2.

Compared with the prior art, the chitin-red date screening device provided by the application has the advantages that the driving component drives the roller 2 to rotate, and the second spiral blade 5 connected with the roller 2, the plurality of screening shafts 43 and the first spiral blade 42 connected with the plurality of screening shafts 43 also rotate. The red dates are placed in the space surrounded by the screening shafts 43, the first helical blades 42 push the red dates falling on the bottom screening shaft 43 to move towards one end of the roller 2, the red dates with the diameter larger than the distance between two adjacent screening shafts 43 are pushed towards one end of the roller 2, the rest red dates leak from between two adjacent screening shafts 43 and fall into the annular gap 41, and the second helical blades 5 which are opposite to the first helical blades 42 in rotation direction push the red dates in the annular gap 41 to move towards the other end of the roller 2. Therefore, the red dates with different diameters can be screened, and the problem of high working strength of the red dates through manual screening is avoided.

In some embodiments, referring to fig. 5-7, the screen shaft 43 includes a screen section 431 and a connecting section 432, the connecting section 432 is externally threaded and is tapered circumferentially inward relative to the screen section 431, and the rolling screen assembly further includes a sizing plate 44 and a plurality of sliding shafts 45. The shaping plate 44 is in a circular plate-shaped structure, the shaping plate 44 is coaxially arranged with the roller 2 and fixedly connected with the first helical blade 42, and the shaping plate 44 is slidably sleeved on all the connecting sections 432. The plurality of sliding shafts 45 are uniformly distributed around the axial lead of the roller 2 and are in one-to-one correspondence with the plurality of screening shafts 43, the sliding shafts 45 are arranged along the radial direction of the roller 2, the sliding shafts 45 are positioned at one end of the corresponding screening section 431 away from the connecting section 432 and are fixedly connected with the corresponding screening section 431, and the sliding shafts 45 are in sliding connection with the roller 2. Wherein, each connecting section 432 is connected with a compression nut 46 in a threaded manner, and the compression nut 46 cooperates with the screening section 431 to clamp the shaping plate 44. The shaping plate 44 is detachably connected to the screening shaft 43 by means of a compression nut 46, and the gap between the two screening segments 431 is used for the red date to fall down. In this embodiment, the shaping plate 44 and the first helical blade 42 may be combined to form an adjustment assembly and multiple sets of adjustment assemblies are provided, wherein the outer diameters of the first helical blade 42 in different adjustment assemblies are different, and the distances between the holes in the shaping plate 44 for penetrating the connecting section 432 and the axis of the roller 2 are different. When the adjusting assembly is replaced, the old adjusting assembly is removed, and then each connecting section 432 is inserted into the new setting plate 44, and since the distance between the hole of the new setting plate 44 for inserting the connecting section 432 and the axis of the drum 2 is changed, the corresponding sliding shaft 45 moves along the axial direction thereof, thereby adjusting the distance between two adjacent sieving shafts 43, that is, the maximum diameter of the red date falling from between the two sieving shafts 43.

In some embodiments, referring to fig. 2, 6 and 7, the rolling screen assembly further includes a plurality of airbags 47. The plurality of inflatable bags 47 are in one-to-one correspondence with the plurality of sieving shafts 43, the inflatable bags 47 are in a strip shape and sleeved and fixed on the corresponding sieving sections 431, and two ends of the inflatable bags 47 are closed, so that the inflatable bags 47 can be filled with gas. The gap between two adjacent inflatable bags 47 is used for the red date to fall down, and the inflatable bags 47 can prevent the skin of the red date from being damaged. The inflated inflation bag 47 abuts against the first helical blade 42.

In some embodiments, referring to fig. 3, 4 and 8, the chitin-red-date screening device further comprises a connector 6. The connecting piece 6 is of a circular ring structure, and one axial end of the connecting piece 6 coaxially penetrates through the roller 2 and is fixedly connected with the roller 2. Wherein the sliding shaft 45 slides into the connecting piece 6. The sliding shaft 45 is slidably connected to the drum 2 via the connecting piece 6.

In some embodiments, referring to fig. 4 to 7, an annular cavity 61 coaxially arranged with the connecting piece 6 is provided in the connecting piece 6, one end of the sliding shaft 45 is located in the annular cavity 61, an air guide cavity 451 communicated with the annular cavity 61 is provided in the sliding shaft 45, an air inflation cavity 4311 is provided in the screening section 431, the air inflation cavity 4311 is communicated with the corresponding air guide cavity 451, a plurality of air inflation holes 4312 for communicating the air inflation bag 47 with the air inflation cavity 4311 are provided on the side wall of the screening section 431, and the chitin red date screening device further comprises an air inflation tube 7 and an annular sealing gasket 8. One end of the inflation tube 7 is communicated with the annular cavity 61, and the other end is used for connecting an inflation device. The annular sealing gasket 8 is coaxially arranged in the connecting piece 6 in a penetrating way and is attached and fixed with the inner side wall of the connecting piece 6, and the annular sealing gasket 8 is sleeved outside all the sliding shafts 45 in a sliding way. The inflator inflates the annular chamber 61 through the inflation tube 7, and the air flow enters the airbag 47 along the air guide chamber 451, the inflation chamber 4311, and the inflation holes 4312, thereby inflating the airbag 47. The annular gasket 8 can prevent air leakage between the connecting member 6 and the slide shaft 45.

In some embodiments, referring to fig. 2-8, the annular cavity 61 extends axially through the end of the connecting member 6 outside the drum 2, and the chitin-red-date screening device further comprises a plurality of separating plates 9, sealing assemblies, and fixtures 110. The plurality of partition plates 9 are located in the annular cavity 61 and uniformly distributed around the axial lead of the annular cavity 61, the partition plates 9 are in sealing fit with the bottom wall and the two side walls of the annular cavity 61 and fixedly connected, an inflation space 91 is formed between two adjacent partition plates 9, the plurality of inflation spaces 91 are in one-to-one correspondence with the plurality of sliding shafts 45, and one end of each sliding shaft 45 is located in the corresponding inflation space 91 so that the air guide cavity 451 is communicated with the corresponding inflation space 91. The seal assembly is of an annular structure, the top of the seal assembly is provided with a notch, the seal assembly is coaxial and slides through the annular cavity 61, and the seal assembly is attached to the end face of the partition plate 9 facing the outside of the annular cavity 61, so that the seal assembly covers part of the inflation space 91. The fixing member 110 is fixedly connected with the sealing assembly and the base 1. Wherein, one end of the inflation tube 7 is fixedly arranged on the sealing assembly and is communicated with one of the inflation spaces 91 covered by the sealing assembly. The sealing assembly fixedly connected to the base 1 by the fixing member 110 does not rotate with the connecting member 6. The sealing assembly covers part of the inflation space 91, the rest of the inflation space 91 is located at the top opening of the sealing assembly, and when the inflation space 91 rotates along with the drum 2 to the opening of the sealing assembly, the air in the corresponding inflation bag 47 flows into the inflation space 91 along the inflation cavity 4311 and the air guide cavity 451 without being covered by the sealing assembly, and flows out of the inflation space 91, so that the gap between the inflation bag 47 for discharging the air and the adjacent inflation bag 47 is enlarged. Since some of the red dates may be held by the two air bags 47, when the air bag 47 at the top is deflated, the held red dates fall back onto the air bag 47 at the bottom. The inflation space 91 at the opening at the top of the sealing assembly rotates in the direction of the inflation tube 7 and when in communication with the inflation tube 7, inflates the deflated inflation bag 47.

In this embodiment, the inflation tube 7 is located on the side of the axis of the seal assembly and may be provided in series so as to ensure that sufficient gas is inflated when the inflation bag 47 is rotated to the bottom.

In some embodiments, referring to fig. 3 and 6, the chitin-red date screening device further comprises an annular stop 120. The annular stop block 120 is coaxially arranged in the connecting piece 6 in a penetrating way, the outer side wall of the annular stop block 120 is circumferentially attached and fixed with the inner side wall of the connecting piece 6, and the annular stop block 120 is positioned on one side, far away from the screen section 431, of the sliding shaft 45. The annular stop 120 is able to block the red date into the annular gap 41 if it falls onto the connection piece 6.

In some embodiments, referring to fig. 6 and 9, the seal assembly includes an arcuate seal pad 101 and an arcuate plate 102. The arc-shaped gasket 101 is used to attach to the partition plate 9. The arc 102 is attached and fixed with the surface of the arc sealing gasket 101, which is away from the partition plate 9, and the arc 102 is fixedly connected with the fixing piece 110 and the inflation tube 7. The sealing assembly ensures the sealing effect of the cap inflation space 91 by the arc-shaped gasket 101 and ensures the strength by the arc-shaped plate 102.

In some embodiments, referring to fig. 1, the drive assembly includes a drive motor 31 and two meshed gears 32. The driving motor 31 is fixedly arranged on the base 1. Two meshed gears 32 are respectively sleeved and fixed on the output shaft of the driving motor 31 and the roller 2. The driving motor 31 drives the drum 2 to rotate through two gears 32 engaged with each other.

Based on the same inventive concept, the embodiment of the present application further provides a chitin red date screening method, using two aforementioned chitin red date screening devices, wherein the diameter of a red date passing through between two adjacent screening shafts 43 in a first chitin red date screening device is not greater than the maximum value of a red date to be selected, and the diameter of a red date passing through between two adjacent screening shafts 43 in a second chitin red date screening device is not less than the minimum value of a red date to be selected, comprising the following steps:

a, starting a driving assembly in a first chitin red date screening device and a second chitin red date screening device;

b, placing the red dates to be screened into a space surrounded by a plurality of screening shafts 43 in the first chitin red date screening device, and collecting the red dates pushed out from the annular gap 41 by the second spiral blades 5 in the first chitin red date screening device;

and C, putting the red dates collected in the step B into a space surrounded by a plurality of screening shafts 43 in the second chitin red date screening device, and collecting the red dates pushed out by the first spiral blades 42 in the second chitin red date screening device from the space surrounded by the plurality of screening shafts 43.

In the first screening device, the red dates to be screened are placed in a space surrounded by a plurality of screening shafts 43, when the diameter of the red dates is larger than the maximum value of the red dates to be selected, the red dates remain in the space and are pushed to one end of the roller 2 by the first spiral blade, and the rest of the red dates fall into the annular gap 41 from between two adjacent screening shafts 43, and then are collected. In the second screening apparatus, the collected red dates are placed in the space surrounded by the plurality of screening shafts 43, and when the diameter of the red dates is smaller than the minimum value of the red dates to be selected, the red dates fall into the annular gap 41, and the red dates left in the space surrounded by the plurality of screening shafts 43 are the red dates to be selected, and the red dates are collected at the conveying tail end of the first helical blade 42. Through the operation, the problem of high working strength of the red dates through manual screening can be avoided.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims

1. Chitin red date screening plant, its characterized in that includes:

a base;

the roller is horizontally arranged and can be rotatably arranged on the base, and both axial ends of the roller are open ends;

the driving assembly is used for driving the roller to rotate;

the rolling screen assembly is arranged in the roller in a penetrating manner, an annular gap is formed between the rolling screen assembly and the side wall of the roller, the rolling screen assembly comprises a first helical blade and a plurality of screening shafts, the screening shafts are arranged along the axial direction of the roller and are connected with the roller, the screening shafts are uniformly distributed around the axial lead of the roller, a gap for red date to pass through is formed between two adjacent screening shafts, the first helical blade is positioned in a space surrounded by the screening shafts, the first helical blade extends spirally around the axial lead of the roller, and the first helical blade is connected with the screening shafts; and

the second spiral blades are positioned in the annular gap and spirally extend around the screening shafts, the rotation directions of the second spiral blades and the first spiral blades are opposite, and the second spiral blades are abutted against the side wall of the roller and fixedly connected with the side wall of the roller;

the screening shaft includes screening segment and linkage segment, the linkage segment is equipped with the external screw thread and for screening segment circumference inwards contracts, the rolling screen assembly still includes:

the shaping plate is in a circular plate-shaped structure, is coaxially arranged with the roller and is fixedly connected with the first spiral blade, and is sleeved on all the connecting sections in a sliding manner;

the sliding shafts are uniformly distributed around the axial lead of the roller and correspond to the screening shafts one by one, the sliding shafts are arranged along the radial direction of the roller, the sliding shafts are positioned at one end of the corresponding screening section far away from the connecting section and are fixedly connected with the corresponding screening section, and the sliding shafts are in sliding connection with the roller;

each connecting section is in threaded connection with a compression nut, and the compression nuts and the screening sections are matched to clamp the shaping plate;

the rolling screen assembly further comprises:

the air bags are in one-to-one correspondence with the screening shafts, are in strip shapes and are sleeved and fixed on the corresponding screening segments, and the two ends of each air bag are closed so that gas can be filled in the air bags;

the chitin red date screening device further comprises:

the connecting piece is in a circular ring structure, and one axial end of the connecting piece coaxially penetrates through the roller and is fixedly connected with the roller;

wherein the sliding shaft slides into the connecting piece; be equipped with in the connecting piece with the coaxial annular chamber that sets up of connecting piece, the one end of sliding axle is located in the annular intracavity just be equipped with in the sliding axle with the air guide chamber of annular chamber intercommunication, have in the screening section and aerify the chamber, aerify the chamber with correspond the air guide chamber intercommunication, be equipped with a plurality of messenger on the lateral wall of screening section aerify the bag with aerify the hole of aerifing the chamber intercommunication, chitin red date screening plant still includes:

one end of the inflation tube is communicated with the annular cavity, and the other end of the inflation tube is used for connecting an inflation device;

the annular sealing gasket is coaxially arranged in the connecting piece in a penetrating way and is adhered and fixed with the inner side wall of the connecting piece, and the annular sealing gasket is sleeved outside all the sliding shafts in a sliding way;

the annular cavity penetrates through the connecting piece along the axial direction of the annular cavity and is positioned at one end outside the roller, and the chitin and red date screening device further comprises:

the plurality of partition plates are positioned in the annular cavity and uniformly distributed around the axial lead of the annular cavity, the partition plates are in sealing fit with the bottom wall and the two side walls of the annular cavity and are fixedly connected, an inflation space is arranged between two adjacent partition plates, the plurality of inflation spaces are in one-to-one correspondence with the plurality of sliding shafts, and one end of each sliding shaft is positioned in the corresponding inflation space so that the air guide cavity is communicated with the corresponding inflation space;

the sealing component is of an annular structure, the top of the sealing component is provided with a notch, the sealing component is coaxial and is arranged in the annular cavity in a sliding penetrating mode, and the sealing component is attached to the end face, facing the outside of the annular cavity, of the partition plate so that the sealing component covers part of the inflation space;

the fixing piece is fixedly connected with the sealing assembly and the base;

one end of the inflation tube is fixedly arranged on the sealing assembly and is communicated with one of the inflation spaces covered by the sealing assembly.

2. The chitin-red date screening device of claim 1, further comprising:

the annular stop block is coaxially arranged in the connecting piece in a penetrating way, the outer side wall of the annular stop block is circumferentially attached and fixed with the inner side wall of the connecting piece, and the annular stop block is positioned on one side, far away from the screen section, of the sliding shaft.

3. The chitin-red date screening device of claim 1, wherein the sealing assembly comprises:

the arc-shaped sealing gasket is used for being attached to the partition plate;

the arc-shaped plate is attached and fixed with the surface of the arc-shaped sealing gasket, which is away from the separation plate, and the arc-shaped plate is fixedly connected with the fixing piece and the inflation tube.

4. The chitin-red date screening device of claim 1, wherein the drive assembly comprises:

the driving motor is fixedly arranged on the base;

the two meshed gears are respectively sleeved and fixed on the output shaft of the driving motor and the roller.

5. A chitin red date screening method, characterized in that two chitin red date screening devices according to any one of claims 1-4 are used, wherein the diameter of red date passing between two adjacent screening shafts in a first chitin red date screening device is not greater than the maximum value of red date to be selected, and the diameter of red date passing between two adjacent screening shafts in a second chitin red date screening device is not less than the minimum value of red date to be selected, comprising the steps of: