Screening and impurity removing device for fennel processing

Abstract

The invention relates to the technical field of fennel processing, in particular to a screening and impurity removing device for fennel processing, which comprises a screening cylinder and a digital display control panel, the screening cylinder is cylindrical, and the lower side of the screening cylinder is provided with a supporting seat structure used for supporting the screening cylinder and adjusting the inclination angle along the axial direction of the screening cylinder; the supporting seat structure is provided with a rotation driving assembly used for driving the screening cylinder to rotate around the central axis of the screening cylinder. A feeding port structure and a discharging port structure are rotationally arranged at the two ends of the screening cylinder in the axial direction of the screening cylinder correspondingly, and a feeding hopper structure is arranged on the upper side of the feeding port structure. Through mutual cooperation and cooperation of the supporting seat structure, the screening barrel, the rotary driving assembly, the feeding port structure, the discharging port structure, the feeding hopper structure, the inner sleeve structure, the electric fan and the like, long-distance ventilation screening of fennel can be achieved, all-directional cleaning and air drying in the screening barrel can be achieved, and influences on follow-up screening and impurity removal are avoided.

Description

Technical Field

[0001] The invention relates to the field of fennel processing equipment, and in particular to a screening and impurity removal device for fennel processing. Background Art

[0002] Fennel, a traditional Chinese medicine, is the dried mature fruit of the fennel plant of the Umbelliferae family. In autumn, when the fruit is just ripe, the plant is harvested, dried, and the fruit is beaten to remove impurities. Fennel has the effects of dispelling cold and relieving pain, regulating qi and stomach. Salt fennel has the effects of warming the kidney, dispelling cold and relieving pain. In order to prevent the impurities in fennel from affecting its efficacy, the following methods are often used for impurity removal: 1. Manual screening, which is mainly carried out by visual inspection and hand feeling judgment; 2. Mechanical screening, using special screening machines, such as air separators and vibration screening machines, to screen fennel.

[0003] A vibrating fennel screening and impurity removal device with application number 201922164456.2 includes a main shell, a frame is fixed in the middle of the bottom of the main shell, a vibrator is fixedly installed in the frame, the vibrator is connected to the bottom of the main shell, both ends of one side of the bottom of the main shell are movably connected with a second support leg, both ends of the other side of the bottom of the main shell are fixedly connected with a support rod, the support rod is inserted in a slot, the slot is opened at one end of the first support leg, a plurality of circular holes are opened on the support rod, and circular holes are opened on the first support legs on both sides of the slot.

[0004] However, in the current screening and impurity removal process of fennel, the air separation distance of fennel is relatively short, resulting in poor screening effect of fennel, and impurities are easily adhered inside the machine, which is difficult to clean, affecting the subsequent screening effect. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] The object of the present invention is to provide a screening and impurity removal device for fennel processing in order to solve the above-mentioned problems.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] The present invention provides a screening and impurity removal device for fennel processing, comprising a screening cylinder and a digital display control panel, wherein the screening cylinder is cylindrical in shape, a support seat structure for supporting the screening cylinder and adjusting the axial tilt angle thereof is arranged at the lower side of the screening cylinder, and a rotary drive assembly for driving the screening cylinder to rotate about its central axis is arranged on the support seat structure;

[0010] The screening drum is rotatably provided with a feed port structure and a discharge port structure at both ends along its axial direction, wherein a feed hopper structure is provided on the upper side of the feed port structure, and an electric fan for blowing air from the discharge port structure to the feed port structure is provided on the discharge port structure, and the output end of the digital display control panel is electrically connected to the input end of the electric fan;

[0011] The screening cylinder is provided with an inner sleeve structure for introducing liquid to flush the interior thereof and introducing gas to dry the interior thereof.

[0012] Preferably, the inner wall of the screening cylinder is protruded with a plurality of material-shifting ridges evenly distributed around its axis, the cross-section of the material-shifting ridge is semicircular, an arc-shaped transition is formed at the connection between the material-shifting ridge and the inner wall of the screening cylinder, and a spiral material transfer rib is provided on the inner side of the screening cylinder.

[0013] Preferably, the rotary drive assembly comprises two outer frames symmetrically distributed around the axis of the screening drum, both ends of each outer frame being fixedly connected to the feed port structure and the discharge port structure respectively, a gear ring is fixedly provided on the outer side of the screening drum, one side of the gear ring is meshedly connected with a gear, one side of the gear is provided with a motor for driving the rotation thereof, the motor is fixedly provided on the two outer frames through a fixing seat, and the output end of the digital display control panel is electrically connected to the input end of the motor.

[0014] Preferably, the support seat structure includes a base arranged below the screening drum, and two support plates symmetrically distributed around the screening drum are arranged on both sides of the screening drum, the two support plates correspond to the two outer frames one by one, the lower ends of the two support plates are fixedly arranged on the base, and the two outer frames are rotatably connected to the corresponding support plates through support shafts respectively, the axial direction of the support shaft is perpendicular to the axial direction of the screening drum, and the digital display control panel is arranged on one of the support plates.

[0015] Preferably, a damper and a hydraulic cylinder are respectively provided on both sides of the two support plates, two ends of the hydraulic cylinder are respectively hinged to the base and the screening cylinder, two ends of the damper are respectively hinged to the base and the screening cylinder, the base, the damper, the hydraulic cylinder and the screening cylinder form a parallelogram linkage mechanism, and the output end of the digital display control panel is electrically connected to the input end of the hydraulic cylinder.

[0016] Preferably, the feed port structure includes a first end plate arranged on one side of one end of the screening cylinder, a plurality of evenly distributed first connecting shafts are connected between the edge of the first end plate and the end edge of the screening cylinder, a first outer sleeve is rotatably connected between the first end plate and the outer side of the end of the screening cylinder through a first bearing, a material receiving pipe is connected to the upper side of the first outer sleeve, an air outlet pipe is connected to the lower side of the first outer sleeve, and two sides of the first outer sleeve are fixedly connected to the ends of the two outer frames respectively.

[0017] Preferably, the feed hopper structure includes a feeding hopper, a feeding pipe is provided at the bottom end of the feeding hopper, the lower end of the feeding pipe and the upper end of the material receiving pipe are docked and connected to each other, and the inner lower end of the feeding pipe is connected to an inner insert tube for plugging and mating with the inner side of the material receiving pipe.

[0018] Preferably, the inner sleeve structure comprises a central pipe, a circular hole groove is provided at the center of the first end plate, one end of the central pipe passes through the circular hole groove and extends to the inside of the screening cylinder, and the central pipe and the screening cylinder share a central axis, the other end of the central pipe extends to the outside of the screening cylinder and is connected to a pipe joint, and a nozzle is provided at the lower side of the central pipe in the screening cylinder. The nozzle is in a straight line shape and its length direction is consistent with the axial direction of the screening cylinder.

[0019] Preferably, an inner sleeve is fixedly provided on the outer side of the central pipe, and the outer side of the inner sleeve is rotatably provided in the circular hole groove through a third bearing. A receiving hopper is provided at one end of the inner sleeve facing the inner side of the screening cylinder, and the length of the receiving hopper along the axis of the screening cylinder is greater than the axial length of the first connecting shaft rod, and the cross-sectional shape of the receiving hopper is U-shaped with the U-shaped opening facing upward.

[0020] Preferably, the discharge port structure includes a second end plate arranged on one side of the other end of the screening cylinder, a plurality of second connecting shafts evenly distributed are connected between the edge of the second end plate and the end edge of the screening cylinder, a second outer ring is rotatably connected between the second end plate and the outer side of the end of the screening cylinder via a second bearing, a discharge pipe is connected to the lower side of the second outer ring, and both sides of the second outer ring are fixedly connected to the ends of the two outer frames respectively.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Through the coordination and cooperation among the support seat structure, screening cylinder, rotary drive assembly, feed port structure, discharge port structure, feed hopper structure, inner sleeve structure and electric fan, long-distance ventilation screening of fennel and all-round cleaning and drying in the screening cylinder can be achieved to avoid affecting the subsequent screening and impurity removal;

[0024] 2. When the fennel is spirally transported by the spiral conveying ribs in the screening cylinder, the material-shifting convex strips can lift and drop the fennel upwards, and the central pipe can extend the falling distance of the fennel during the process of lifting and falling, so that the electric fan can blow out the light impurities in the fennel, achieving a better impurity removal effect;

[0025] 3. The central pipe of the inner sleeve structure can introduce cleaning liquid and drying gas into the screening cylinder respectively, so as to realize the cleaning and drying of the screening cylinder. In this process, the nozzle is always located at the lower side of the central pipe, which can avoid the problem of blockage in the process of fennel screening and impurity removal;

[0026] 4. The support seat structure adjusts the inclination angle of the screening cylinder. First, it can play the role of sliding out the material in the docking hopper during feeding. Second, it can adjust the transmission speed of fennel in the screening cylinder. Third, when the screening cylinder is cleaned through the inner sleeve structure, the water can flow out completely in the screening cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a main structural schematic diagram of the present invention;

[0029] Figure 2 The present invention Figure 1 Schematic diagram of the left view structure;

[0030] Figure 3 The present invention Figure 1 A schematic diagram of a three-dimensional structure in a first direction;

[0031] Figure 4 The present invention Figure 3 A schematic diagram of the local enlarged structure at D;

[0032] Figure 5 The present invention Figure 1 AA cross-sectional structural diagram;

[0033] Figure 6 The present invention Figure 5 A schematic diagram of the local enlarged structure at E;

[0034] Figure 7 The present invention Figure 1BB cross-sectional structure diagram;

[0035] Figure 8 The present invention Figure 2 Schematic diagram of CC cross-section structure;

[0036] Fig. 9 The present invention Figure 1 A schematic diagram of the three-dimensional structure in the second direction.

[0037] The reference numerals are as follows: 1. support seat structure; 101. base; 102. support plate; 103. damper; 104. hydraulic cylinder; 105. support shaft; 2. screening cylinder; 201. material-pickling convex strip; 202. spiral material-transfer rib; 3. rotary drive assembly; 301. outer frame; 302. motor; 303. gear; 304. fixed seat; 305. gear ring; 4. feed port structure; 401. first outer rotating sleeve; 402. material receiving pipe; 403. air outlet pipe; 404. first bearing; 405. The first end plate; 406, the first connecting shaft; 5, the discharge port structure; 501, the second outer ring; 502, the second bearing; 503, the second connecting shaft; 504, the discharge pipe; 505, the second end plate; 6, the feed hopper structure; 601, the feeding hopper; 602, the feeding pipe; 603, the inner insert; 7, the inner sleeve structure; 701, the inner sleeve platform; 702, the third bearing; 703, the pipe joint; 704, the center pipe; 705, the receiving hopper; 706, the nozzle; 8, the electric fan; 9, the digital display control panel. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be described in detail below. 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 implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-Figure 9As shown, the present invention provides a screening and impurity removal device for fennel processing, comprising a screening cylinder 2 and a digital display control panel 9, the screening cylinder 2 is cylindrical in shape, a support seat structure 1 for supporting the screening cylinder 2 and adjusting its axial inclination angle is arranged at the lower side of the screening cylinder 2, a rotating drive assembly 3 for driving the screening cylinder 2 to rotate about its central axis is arranged on the support seat structure 1; a feed port structure 4 and a discharge port structure 5 are rotatably arranged at both ends of the screening cylinder 2 along its axial direction, wherein a feed hopper structure 6 is arranged on the upper side of the feed port structure 4, and an electric fan 8 for blowing air from the discharge port structure 5 to the feed port structure 4 is arranged on the discharge port structure 5, and the output end of the digital display control panel 9 is electrically connected to the input end of the electric fan 8; an inner sleeve structure 7 for introducing liquid to flush the interior and introducing gas to dry the interior is arranged in the screening cylinder 2.

[0040] See the instruction manual Figure 6 and 8 As shown, the inner wall of the screening cylinder 2 is provided with a plurality of material-dispensing ridges 201 evenly distributed around its axis, the screening cylinder 2 and the material-dispensing ridges 201 are integrally formed with each other, the cross-section of the material-dispensing ridges 201 is semicircular, an arc-shaped transition is formed at the connection between the material-dispensing ridges 201 and the inner wall of the screening cylinder 2, a spiral material-dispensing rib 202 is provided on the inner side of the screening cylinder 2, and the spiral material-dispensing rib 202 is fixedly provided on the inner side of the screening cylinder 2 by welding. In practical applications, an arc-shaped transition is formed at the connection between the material-dispensing ridges 201 and the inner wall of the screening cylinder 2, which can avoid the accumulation of impurities and facilitate subsequent cleaning through the inner sleeve structure 7.

[0041] See the instruction manual Figure 1 and Figure 3 As shown, the rotary drive assembly 3 includes two outer frames 301 symmetrically distributed around the axis of the screening drum 2, both ends of each outer frame 301 are fixedly connected to the feed port structure 4 and the discharge port structure 5 respectively, a gear ring 305 is fixedly provided on the outer side of the screening drum 2, a gear 303 is meshedly connected to the upper side of the gear ring 305, a motor 302 for driving the gear 303 to rotate is provided on one side of the gear 303, the motor 302 is fixedly provided on the two outer frames 301 through a fixing seat 304, wherein the two sides of the fixing seat 304 are fixedly connected to the two outer frames 301 by bolts respectively, and the output end of the digital display control panel 9 is electrically connected to the input end of the motor 302. The rotary drive assembly 3 drives the screening drum 2 to rotate and has two functions. The first function is to drive the screening drum 2 to rotate to cooperate with the spiral material transfer ribs 202 therein to spirally transfer the material, and to cooperate with the material-pickling convex strips 201 provided on the inner wall of the screening drum 2 to push and lift the fennel upward. The second function is to cooperate with the inner sleeve structure 7 to perform all-round cleaning on the inside of the screening drum 2.

[0042] See the instruction manual Figure 1and 8 As shown, the support seat structure 1 includes a base 101 arranged below the screening drum 2, and two support plates 102 symmetrically distributed with the screening drum 2 as the center are arranged on both sides of the screening drum 2, and the two support plates 102 correspond to the two outer frames 301 one by one, and the lower ends of the two support plates 102 are fixed on the base 101 by bolts, and in actual applications, in order to strengthen the connection strength between the support plates 102 and the base 101, cross plates can be connected to each other between the lower ends of the two support plates 102, and then the cross plates are fixedly connected to each other with the base 101 by bolts, and the two outer frames 301 are rotatably connected to the corresponding support plates 102 through support shafts 105, and the axial direction of the support shaft 105 is perpendicular to the axial direction of the screening drum 2, and the digital display control panel 9 is arranged on one of the support plates 102. The two sides of the two support plates 102 are provided with a damper 103 and a hydraulic cylinder 104, respectively. The two ends of the hydraulic cylinder 104 are respectively hinged to the base 101 and the screening cylinder 2, and the two ends of the damper 103 are respectively hinged to the base 101 and the screening cylinder 2. The base 101, the damper 103, the hydraulic cylinder 104 and the screening cylinder 2 form a parallelogram linkage mechanism, and the output end of the digital display control panel 9 is electrically connected to the input end of the hydraulic cylinder 104. Through the above-mentioned specific structural design, the support seat structure 1 adjusts the inclination angle of the screening cylinder 2. First, it can play the role of sliding out of the docking hopper 705 during feeding, second, it can play the role of adjusting the transmission speed of fennel in the screening cylinder 2, and third, when the screening cylinder 2 is cleaned through the inner sleeve structure 7, the water can flow out completely in the screening cylinder 2.

[0043] See the instruction manual Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the feed port structure 4 includes a first end plate 405 arranged on one side of one end of the screening cylinder 2, that is, a feed gap is formed between the first end plate 405 and the end of the screening cylinder 2, and a plurality of evenly distributed first connecting shafts 406 are welded and connected between the edge of the first end plate 405 and the end edge of the screening cylinder 2, and a first outer sleeve 401 is rotatably connected between the first end plate 405 and the outer side of the end of the screening cylinder 2 through a first bearing 404, the upper side of the first outer sleeve 401 is connected to a material receiving pipe 402, and the lower side of the first outer sleeve 401 is connected to an air outlet pipe 403, and both sides of the first outer sleeve 401 are fixedly connected to the ends of the two outer frames 301.

[0044] See the instruction manual Figure 6As shown, the feed hopper structure 6 includes a feeding hopper 601, and a feeding pipe 602 is arranged at the bottom end of the feeding hopper 601. The lower end of the feeding pipe 602 and the upper end of the material receiving pipe 402 are docked and connected to each other, and the inner lower end of the feeding pipe 602 is connected with an inner insert pipe 603 for plugging and matching with the inner side of the material receiving pipe 402.

[0045] See the instruction manual Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, the inner sleeve structure 7 includes a central pipe 704, a circular hole groove is opened at the center position of the first end plate 405, one end of the central pipe 704 passes through the circular hole groove and extends to the inside of the screening cylinder 2, and the central pipe 704 and the screening cylinder 2 share the same central axis, the other end of the central pipe 704 extends to the outside of the screening cylinder 2 and is connected to a pipe joint 703, and a nozzle 706 is arranged at the lower side of the central pipe 704 in the screening cylinder 2. The nozzle 706 is in a straight line shape and the length direction is consistent with the axial direction of the screening cylinder 2. An inner sleeve platform 701 is fixedly arranged on the outside of the central pipe 704, and the outer side of the inner sleeve platform 701 is rotatably arranged in the circular hole groove through the third bearing 702. A receiving hopper 705 is arranged at one end of the inner sleeve platform 701 facing the inside of the screening cylinder 2, and the length of the receiving hopper 705 along the axis of the screening cylinder 2 is greater than the axial length of the first connecting shaft 406, and the cross-sectional shape of the receiving hopper 705 is U-shaped and the U-shaped opening faces upward. In actual application, the pipe joint 703 is connected to the external liquid supply device and the external gas supply device respectively, and a three-way valve is provided between the pipe joint 703, the external liquid supply device and the external gas supply device.

[0046] The discharge port structure 5 includes a second end plate 505 arranged on one side of the other end of the screening cylinder 2, and a plurality of evenly distributed second connecting shafts 503 are connected between the edge of the second end plate 505 and the end edge of the screening cylinder 2. A second outer ring 501 is rotatably connected between the second end plate 505 and the outer side of the end of the screening cylinder 2 through a second bearing 502, and a discharge pipe 504 is connected to the lower side of the second outer ring 501. Both sides of the second outer ring 501 are fixedly connected to the ends of the two outer frames 301.

[0047] Working principle and technical effect of the present invention:

[0048] When in use, pour the fennel mixed with impurities into the feeding hopper 601 of the feed hopper structure 6, and the fennel in the feeding hopper 601 enters the screening cylinder 2 through the feeding hopper 601 and the inner tube 603 in turn, and falls into the receiving hopper 705. The support seat structure 1 adjusts the inclination angle of the screening cylinder 2 so that the height of the end of the screening cylinder 2 provided with the feeding port structure 4 is higher than the height of the end of the screening cylinder 2 provided with the discharging port structure 5, thereby allowing the fennel in the receiving hopper 705 to slide into the screening cylinder 2. Specifically, the outlet position of the receiving hopper 705 is located at the end position of the spiral transfer rib 202, and the rotating drive component 3 drives the screening cylinder 2 to rotate about its central axis, so that the fennel falling into the screening cylinder 2 can be spirally transported and moved by the spiral transfer rib 202.

[0049] When the support seat structure 1 adjusts the tilt height of the screening drum 2 along its axial direction, the push rod of the hydraulic cylinder 104 retracts, thereby driving the screening drum 2 to rotate a certain angle under the support of the support shaft 105, thereby adjusting the tilt angle of the screening drum 2. During the rotation of the screening drum 2, the telescopic length and tilt angle of the damper 103 can be adaptively adjusted to ensure the stability of the screening drum 2.

[0050] The output shaft of the motor 302 of the rotary drive assembly 3 rotates, thereby driving the gear 303 to rotate, the gear 303 rotates to drive the meshing ring gear 305 to rotate, the ring gear 305 rotates to drive the screening drum 2 to rotate under the support of the feed port structure 4 and the discharge port structure 5, at this time, the feed port structure 4 and the discharge port structure 5 play the role of supporting the screening drum 2 to rotate around its axis;

[0051] During the spiral transmission of the fennel by the spiral material transfer ribs 202 in the screening cylinder 2, the material-shifting convex strips 201 can shift the fennel upward, lift it up and drop it down. During this process, the electric fan 8 can blow the light impurities lighter than the fennel toward the feed port structure 4, and finally discharge them from the air outlet duct 403. In addition, the central duct 704 can extend the falling distance of the fennel during the process of the fennel being lifted up and dropped, thereby facilitating the electric fan 8 to blow out the light impurities in the fennel, thereby achieving a better impurity removal effect.

[0052] Due to the soil and other impurities contained in fennel, it is inevitable that some of them will adhere to the inner wall of the screening cylinder 2 during the screening process. In order to prevent the accumulation of impurities on the inner wall of the screening cylinder 2 and affect the subsequent screening and impurity removal of fennel, the central pipe 704 of the inner sleeve structure 7 can introduce cleaning liquid and drying gas into the screening cylinder 2 respectively, so as to achieve cleaning and drying of the screening cylinder 2. In this process, the nozzle 706 is always located at the lower side of the central pipe 704, which can avoid the problem of blockage during the screening and impurity removal of fennel. In addition, although the position of the nozzle 706 remains unchanged, the screening cylinder 2 can be rotated under the drive of the rotating drive component 3, thereby achieving all-round cleaning and drying of the screening cylinder 2. The liquid generated by the cleaning can also be completely discharged from the air outlet pipe 403 or the discharge pipe 504 under the adjustment of the inclination angle of the screening cylinder 2 by the support seat structure 1.

[0053] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A screening and impurity removal device for fennel processing, characterized in that: The invention comprises a screening drum (2) and a digital display control panel (9), wherein the screening drum (2) is cylindrical in shape, a support seat structure (1) for supporting the screening drum (2) and adjusting its axial tilt angle is arranged at the lower side of the screening drum (2), and a rotary drive assembly (3) for driving the screening drum (2) to rotate about its central axis is arranged on the support seat structure (1); The screening drum (2) is rotatably provided with a feed port structure (4) and a discharge port structure (5) at both ends along its axial direction, wherein a feed hopper structure (6) is provided on the upper side of the feed port structure (4), and an electric fan (8) is provided on the discharge port structure (5) for blowing air in a direction from the discharge port structure (5) to the feed port structure (4), and the output end of the digital display control panel (9) is electrically connected to the input end of the electric fan (8); The screening cylinder (2) is provided with an inner sleeve structure (7) for introducing liquid to flush the interior thereof and introducing gas to dry the interior thereof.

2. The screening and impurity removal device for fennel processing according to claim 1, characterized in that: The inner wall of the screening cylinder (2) is protruded with a plurality of material-moving ridges (201) evenly distributed around its axis, the cross-section of the material-moving ridges (201) being semicircular, an arc-shaped transition being formed at the connection between the material-moving ridges (201) and the inner wall of the screening cylinder (2), and a spiral material-transfer rib (202) being provided on the inner side of the screening cylinder (2).

3. A screening and impurity removal device for fennel processing according to claim 1 or 2, characterized in that: The rotary drive assembly (3) comprises two outer frames (301) symmetrically distributed around the axis of the screening drum (2), the two ends of each outer frame (301) being fixedly connected to the feed port structure (4) and the discharge port structure (5) respectively, a gear ring (305) being fixedly arranged on the outer side of the screening drum (2), one side of the gear ring (305) being meshingly connected to a gear (303), one side of the gear (303) being provided with a motor (302) for driving the gear ring (303) to rotate, the motor (302) being fixedly arranged on the two outer frames (301) via a fixing seat (304), and the output end of the digital display control panel (9) being electrically connected to the input end of the motor (302).

4. The screening and impurity removal device for fennel processing according to claim 3, characterized in that: The support seat structure (1) comprises a base (101) arranged below the screening drum (2); two support plates (102) are arranged on both sides of the screening drum (2) and are symmetrically distributed around the screening drum (2); the two support plates (102) correspond to the two outer frames (301) one by one; the lower ends of the two support plates (102) are fixedly arranged on the base (101); the two outer frames (301) are rotatably connected to the corresponding support plates (102) via support shafts (105); the axial direction of the support shaft (105) is perpendicular to the axial direction of the screening drum (2); and the digital display control panel (9) is arranged on one of the support plates (102).

5. The fennel processing screening and impurity removal device according to claim 4, characterized in that: A damper (103) and a hydraulic cylinder (104) are respectively arranged on both sides of the two support plates (102); two ends of the hydraulic cylinder (104) are respectively hinged to the base (101) and the screening drum (2); two ends of the damper (103) are respectively hinged to the base (101) and the screening drum (2); the base (101), the damper (103), the hydraulic cylinder (104) and the screening drum (2) form a parallelogram linkage mechanism; and the output end of the digital display control panel (9) is electrically connected to the input end of the hydraulic cylinder (104).

6. The screening and impurity removal device for fennel processing according to claim 3, characterized in that: The feed port structure (4) comprises a first end plate (405) arranged on one side of one end of the screening cylinder (2); a plurality of evenly distributed first connecting shafts (406) are connected between the edge of the first end plate (405) and the edge of the end of the screening cylinder (2); a first outer sleeve (401) is rotatably connected between the first end plate (405) and the outer side of the end of the screening cylinder (2) via a first bearing (404); a material receiving pipe (402) is connected to the upper side of the first outer sleeve (401); an air outlet pipe (403) is connected to the lower side of the first outer sleeve (401); and two sides of the first outer sleeve (401) are fixedly connected to the ends of the two outer frames (301) respectively.

7. The screening and impurity removal device for fennel processing according to claim 6, characterized in that: The feed hopper structure (6) comprises a feeding hopper (601), a feeding pipe (602) is arranged at the bottom end of the feeding hopper (601), the lower end of the feeding pipe (602) and the upper end of the material receiving pipe (402) are connected to each other in a docking manner, and the inner lower end of the feeding pipe (602) is connected to an inner insert pipe (603) for plugging and matching with the inner side of the material receiving pipe (402).

8. The screening and impurity removal device for fennel processing according to claim 1, characterized in that: The inner sleeve structure (7) comprises a central pipe (704), a circular hole groove is provided at the central position of the first end plate (405), one end of the central pipe (704) passes through the circular hole groove and extends to the inside of the screening cylinder (2), and the central pipe (704) and the screening cylinder (2) share a central axis, the other end of the central pipe (704) extends to the outside of the screening cylinder (2) and is connected to a pipe joint (703), and a nozzle (706) is provided at the lower side of the central pipe (704) located in the screening cylinder (2). The nozzle (706) is in a straight line shape and its length direction is consistent with the axial direction of the screening cylinder (2).

9. The fennel processing screening and impurity removal device according to claim 8, characterized in that: An inner sleeve (701) is fixedly arranged on the outer side of the central pipe (704), and the outer side of the inner sleeve (701) is rotatably arranged in the circular hole groove through a third bearing (702). A receiving hopper (705) is arranged at one end of the inner sleeve (701) facing the inner side of the screening cylinder (2), and the length of the receiving hopper (705) along the axis of the screening cylinder (2) is greater than the axial length of the first connecting shaft (406), and the cross-sectional shape of the receiving hopper (705) is U-shaped, and the U-shaped opening faces upward.

10. The screening and impurity removal device for fennel processing according to claim 1, characterized in that: The discharge port structure (5) comprises a second end plate (505) arranged on one side of the other end of the screening cylinder (2); a plurality of evenly distributed second connecting shafts (503) are connected between the edge of the second end plate (505) and the edge of the end of the screening cylinder (2); a second outer ring (501) is rotatably connected between the second end plate (505) and the outer side of the end of the screening cylinder (2) via a second bearing (502); a discharge pipe (504) is connected to the lower side of the second outer ring (501); and both sides of the second outer ring (501) are fixedly connected to the ends of the two outer frames (301) respectively.

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