Melon seed impurity removing and screening device

By using an inclined mixing roller and blower in the melon seed removal screening device, the contact time between melon seeds and wind is extended, and the problem of poor impurities removal in the prior art is solved, and efficient removal of light impurities in the melon seeds is achieved. .

CN222287956UActive Publication Date: 2025-01-03INNER MONGOLIA HENGXIN FOODSTUFF CO LTD
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Patent Information

Application Number
CN202421062647.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-16
Publication Date
2025-01-03
Estimated Expiration
2034-05-16

AI Technical Summary

Technical Problem

During the process of removing impurities of melon seeds, the contact time between melon seeds and wind is insufficient, which makes it difficult to completely separate light impurities, affecting the effect of removing impurities.

Method used

A melon seed removal screening device is designed. The inclined mixing drum and blower are combined. The melon seeds are raised and fallen many times in the mixing drum, extending the contact time with the wind and ensuring that light impurities are effectively blown. Leave.

Benefits of technology

It improves the contact time between melon seeds and wind, significantly improves the removal efficiency of light impurities in melon seeds, and ensures the high-quality impurity removal and screening effect of melon seeds.

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Abstract

The utility model discloses an impurity removing and screening device for melon seeds, and relates to the technical field of agricultural product processing equipment. According to the technical key points, the device comprises a supporting rack, a screening mechanism is arranged on one side of the supporting rack, a feeding hopper is installed above one end of the supporting rack, and an inclined turning and stirring roller is arranged on one side of the lower end of the feeding hopper; a guide chute is arranged between the charging hopper and the stirring roller; the two ends of the turning and stirring roller are installed on the supporting machine frame through the supporting units respectively, and one side of a roller body of the turning and stirring roller is further connected with the power assembly. An air blower is arranged on one side, far away from the stirring roller, below the feeding hopper. The impurity removing and screening device can effectively prolong the contact time of melon seeds and air blown out by the air blower, and therefore the separation effect of impurities in the melon seeds is improved.
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Description

Technical Field

[0001] The present application relates to the technical field of agricultural product processing equipment, and in particular to a melon seed impurity removal and screening device. Background Art

[0002] Melon seeds refer to melon seeds, which come in many varieties, including sunflower seeds, hanging melon seeds, watermelon seeds, pumpkin seeds, cucumber seeds, loofah seeds, etc. Melon seeds are rich in vitamins, proteins, and oils, so they are often used to produce edible oil or snacks. However, melon seeds harvested directly from the fields are often mixed with light impurities such as dead leaves and dust, and the particle sizes of melon seeds vary. Therefore, melon seeds are often screened after harvest to remove impurities such as dead leaves and dust in the melon seeds, and to screen out melon seeds of different grades according to particle size.

[0003] When separating light impurities in melon seeds, the existing vibrating screening device often adopts the method of pouring the melon seeds from the feed hopper of the screening device first, and the melon seeds will move to the screen below under the action of gravity, and then start the fan to blow air to the melon seeds in the falling process, so as to blow the light impurities in the melon seeds away from the melon seeds, and then the melon seeds fall very fast under the action of gravity, so the contact time between the melon seeds and the wind blown by the fan is limited. When a large number of melon seeds fall from the feed hopper to the screen, some impurities such as dead leaves or dust mixed in the melon seeds may not be able to fully contact with the wind blown by the fan, which will make it difficult to separate these impurities from the melon seeds. When the vibrating screen is used to vibrate and classify the melon seeds later, large-sized dead leaves are likely to be classified together with large-sized melon seeds, and small-sized dust is likely to be classified together with small-sized melon seeds, resulting in the final melon seed impurity removal and screening effect being affected. Utility Model Content

[0004] The present application provides a melon seed impurity removal and screening device, which can increase the contact time between the melon seeds and the wind when the melon seeds are impurities removed by the wind power of a fan, thereby removing light impurities in the melon seeds with high quality to ensure the final melon seed impurity removal and screening effect.

[0005] The above-mentioned purpose of the present application is achieved through the following technical solutions:

[0006] A melon seed impurity removal and screening device comprises a support frame, a screening mechanism is arranged on one side of the support frame, a feeding funnel is fixedly installed above one end of the support frame, and an inclined stirring drum is arranged on one side of the lower end of the feeding funnel;

[0007] A material guide trough is provided between the lower port of the feeding funnel and the higher end port of the mixing drum, and the lower side of the material guide trough is fixedly mounted on the supporting frame through a plurality of legs;

[0008] Both ends of the mixing drum are respectively mounted on the supporting frame through a supporting unit, and one side of the mixing drum body is also connected to a power assembly, and the power assembly can drive the mixing drum to rotate around its own axis;

[0009] A blower is provided below the feeding hopper on a side away from the stirring drum, the air outlet of the blower faces a higher end port of the stirring drum, and the blower is fixedly mounted on the supporting frame via a mounting platform.

[0010] Furthermore, the support unit includes an annular flange arranged on the outside of the mixing drum, and a groove wheel is respectively provided on the opposite side of the lower end of the annular flange, and the annular flange is placed in the grooves of the two groove wheels. The annular flange can rotate freely around its own axis above the groove wheels; the groove wheel is movably mounted on the support frame through a bracket.

[0011] Furthermore, the power assembly includes a gear ring, which is located between two annular flanges and fixedly mounted on the mixing drum, a gear is meshed on one side of the gear ring, the center of the gear is fixedly connected to the output end of the drive motor, and the housing of the drive motor is fixedly mounted on the support frame through a motor bracket; a rotating shaft support plate is sleeved on the output shaft of the drive motor and the two are rotatably connected, and the lower end of the rotating shaft support plate is fixedly connected to the motor bracket.

[0012] Furthermore, a plurality of stirring blades are provided inside the stirring drum, the plurality of stirring blades are evenly arranged along the inner wall of the stirring drum, and the plurality of stirring blades are fixedly connected to the inner wall of the stirring drum.

[0013] Furthermore, the screening mechanism comprises a screening box, a screening frame is provided on the top of the screening box, and the screening frame is arranged obliquely, the upper part of the higher end of the screening frame is located below the port of the lower end of the mixing drum; a first discharge port is provided on one side below the lower end of the screening frame;

[0014] A primary filter screen is installed at the upper end of the screen frame; a vibration motor is installed at the bottom of the screen frame, and the four corners of the screen frame are connected to the screening box body through a spring respectively.

[0015] Furthermore, the screening mechanism also includes a secondary filter screen arranged above the primary filter screen with the same inclination angle as the primary filter screen, the secondary filter screen is fixedly connected to an upward extension section of the side wall of the screen frame near the same end of the support frame at one end, the other end of the secondary filter screen extends to the outside of the same end of the screen frame, and a second discharge port is installed below the portion of the secondary filter screen extending out of the screen frame;

[0016] The opposite side walls of the screen frame in the width direction both extend upward and are fixedly connected to the secondary filter screen;

[0017] A protective cover is provided above the secondary filter screen, one end of the protective cover is fixedly connected to one end of the screen frame close to the support frame, and a material receiving port is provided at the end of the protective cover; the material receiving port is located below the lower port of the mixing drum, the protective cover extends away from one end of the support frame to the outside of the secondary filter screen, and a third material outlet is installed below the portion of the protective cover extending out of the secondary filter screen;

[0018] The aperture of the secondary filter is larger than the aperture of the primary filter.

[0019] Furthermore, a dispersion plate is installed in the material receiving port.

[0020] Furthermore, an impurity diversion plate is provided in the middle position above the protective cover.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] After being discharged from the feeding funnel, the melon seeds to be processed can first fall into the turning drum. The inclined turning drum will rotate around its own axis driven by the power component, so that the melon seeds will continue to fall to a high place in the drum as the turning drum rotates, and generally move toward the screening mechanism along the axis of the turning drum. Since the strong wind blown out by the blower located on one side of the turning drum will continue to blow from one end of the turning drum to the other end, the melon seeds in the turning drum will be frequently lifted up by the turning drum during the movement. Therefore, the melon seeds can be fully exposed to the wind blown out by the blower in the process of slowly moving toward the screening mechanism, so that the dead leaves, dust and other impurities in the melon seeds can be fully blown away by the wind blown out by the blower. In this way, the melon seeds entering the screening mechanism will hardly be affected by the residual dead leaves and dust and affect the final melon seed screening quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of this application;

[0025] Figure 2 It is a structural schematic diagram of the support frame of the present application and the related components thereon;

[0026] Figure 3 is a cross-sectional view of the screening mechanism of the present application;

[0027] Figure 4 It is a bottom view of the overall structure of this application.

[0028] Figure numerals: 1. Support frame; 2. Screening mechanism; 21. Screening box; 22. Screen frame; 23. First discharge port; 24. Primary filter screen; 25. Vibration motor; 26. Spring; 27. Secondary filter screen; 28. Second discharge port; 29. ​​Protective cover; 210. Receiving port; 211. Third discharge port; 3. Feeding funnel; 4. Stirring drum; 5. Material guide trough; 6. Support leg; 7. Support unit; 71. Annular flange; 72. Grooved wheel; 73. Bracket; 8. Power assembly; 81. Ring gear; 82. Gear; 83. Drive motor; 84. Motor bracket; 85. Rotating shaft support plate; 9. Blower; 10. Mounting table; 11. Stirring blade; 12. Dispersing plate; 13. Impurity diverter plate. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0030] like Figure 1 and Figure 2 As shown, a melon seed impurity removal and screening device disclosed in the present application comprises a support frame 1, a screening mechanism 2 is provided on one side of the support frame 1, a feeding funnel 3 is fixedly installed above one end of the support frame 1, and an inclined stirring drum 4 is provided on one side of the lower end of the feeding funnel 3;

[0031] A material guide trough 5 is provided between the lower port of the feeding funnel 3 and the higher end port of the mixing drum 4, and the lower side of the material guide trough 5 is fixedly mounted on the supporting frame 1 through a plurality of legs 6;

[0032] Both ends of the mixing drum 4 are respectively mounted on the support frame 1 through a support unit 7, and one side of the drum body of the mixing drum 4 is also connected to a power component 8, which can drive the mixing drum 4 to rotate around its own axis;

[0033] A blower 9 is provided below the feeding hopper 3 on the side away from the mixing drum 4 , the air outlet of the blower 9 faces the higher end of the mixing drum 4 , and the blower 9 is fixedly mounted on the supporting frame 1 through a mounting platform 10 .

[0034] In the above embodiments, the lower port of the feeding funnel 3 of the present application is higher than the higher end of the stirring drum 4, and the function of the provided material guide trough 5 is to guide the melon seeds discharged from the lower port of the feeding funnel 3 into the stirring drum 4, wherein the lower port of the material guide trough 5 is located at an upper position in the stirring drum 4, so that the air blown out by the blower 9 can reduce the influence of the material guide trough 5 on the wind force when flowing to the stirring drum 4.

[0035] After the workers add the melon seeds to be processed into the feeding funnel 3, the melon seeds will fall from the lower port of the feeding funnel 3 to the upper end of the guide trough 5, and then fall along the guide trough 5 to the lower side wall of the turning drum 4. In this process, the melon seeds will come into contact with the wind in the turning drum 4, and the wind blown by the blower 9 will blow some of the light impurities in the melon seeds out of the turning drum 4.

[0036] Since the turning drum 4 itself rotates on the support units 7 at both ends under the action of the power assembly 8, the melon seeds falling on the lower side wall of the turning drum 4 will rotate with the turning drum 4 under the action of the friction of the inner wall of the turning drum 4. When the gravity of the melon seeds is greater than the friction of the turning drum 4, the melon seeds will fall back to the lower side of the turning drum 4, and the corresponding melon seeds will also be in uniform contact with the wind blown by the blower 9 again, and the wind blown by the blower 9 can separate the impurities in the melon seeds again. Since the turning drum 4 of the present application is tilted, and its high end faces the guide trough 5, and the low end faces the screening mechanism 2, each time the melon seeds actually fall from the turning drum 4, they will gradually move toward the direction of the screening mechanism 2 until they are finally discharged from the turning drum 4 to complete the first impurity removal process for the melon seeds. Compared with the prior art in which melon seeds fall directly onto the screen after being added from the feed funnel, and the fan only removes impurities with wind during the rapid and free falling process of the melon seeds, the present application significantly increases the time that the melon seeds are in contact with the wind before entering the screening mechanism 2, and can lift the melon seeds in the turning drum 4 multiple times, and correspondingly can also make all the melon seeds entering the turning drum 4 more fully contact with the wind, so that the wind blown by the blower 9 can fully remove light impurities such as dead leaves and dust in the melon seeds, so as to avoid them affecting the effect of subsequent screening.

[0037] Furthermore, if Figure 2 As shown, the support unit 7 includes an annular flange 71 arranged on the outside of the mixing drum 4, and a groove wheel 72 is respectively provided on the opposite side of the lower end of the annular flange 71. The annular flange 71 is placed in the grooves of the two groove wheels 72, and the annular flange 71 can rotate freely around its own axis above the groove wheels 72; the groove wheels 72 are movably mounted on the support frame 1 through a bracket 73.

[0038] In the above embodiments, the annular flange 71 arranged on the outside of the mixing drum 4 can be stuck in the grooves of the groove wheel 72 on both sides thereof, so that the mixing drum 4 can be prevented from being displaced along the direction of its own axis during the working process of the mixing drum 4. And because the groove wheel 72 is movably mounted on the bracket 73, and the bracket 73 is fixedly mounted on the support frame 1, the friction between the groove wheel 72 and the mixing drum 4 is rolling friction, so that the resistance encountered by the mixing drum 4 when rotating is relatively small, and the rotation will be smoother. Since the mixing drum 4 of the present application is tilted, the height of the bracket 73 in the support unit 7 at one end of the mixing drum 4 close to the guide trough 5 will be slightly higher than the height of the bracket 73 in the support unit 7 at the other end of the mixing drum 4.

[0039] Furthermore, if Figure 2 As shown, the power assembly 8 includes a ring gear 81, which is located between the two annular flanges 71 and fixedly sleeved on the mixing drum 4. A gear 82 is meshed on one side of the ring gear 81, and the center of the gear 82 is fixedly connected to the output end of the drive motor 83. The housing of the drive motor 83 is fixedly mounted on the support frame 1 through a motor bracket 84; a rotating shaft support plate 85 is sleeved on the output shaft of the drive motor 83 and the two are rotatably connected, and the lower end of the rotating shaft support plate 85 is fixedly connected to the motor bracket 84.

[0040] In the above embodiment, the driving motor 83 of the present application can obtain a stable support effect through the motor bracket 84. When the driving motor 83 is working, it drives the gear 82 connected thereto to rotate, and the gear 82 is meshed with the ring gear 81. The ring gear 81 is fixedly sleeved on the mixing drum 4. Therefore, when the driving motor 83 is working, it can drive the mixing drum 4 to rotate around its own axis. The shaft support plate 85 can provide a certain support force for the shaft to ensure the smooth rotation of the shaft.

[0041] Furthermore, if Figure 4 As shown, a plurality of stirring blades 11 are disposed inside the stirring drum 4 . The plurality of stirring blades 11 are evenly arranged along the inner wall of the stirring drum 4 , and the plurality of stirring blades 11 are fixedly connected to the inner wall of the stirring drum 4 .

[0042] In the above embodiment, the multiple stirring blades 11 in the stirring drum 4 can assist the melon seeds in the stirring drum 4 to rotate to a higher place in the stirring drum 4 when the stirring drum 4 rotates, so that the melon seeds can stay in the air longer when thrown down, and correspondingly can be more fully exposed to the wind blown by the blower 9.

[0043] Furthermore, if Figure 1 , Figure 3 and Figure 4As shown, the screening mechanism 2 includes a screening box 21, a screening frame 22 is provided on the top of the screening box 21, and the screening frame 22 is inclined, and the upper part of the higher end of the screening frame 22 is located below the port of the lower end of the mixing drum 4; a first discharge port 23 is provided on one side below the lower end of the screening frame 22;

[0044] A primary filter screen 24 is installed at the upper end of the screen frame 22 ; a vibration motor 25 is installed at the bottom of the screen frame 22 , and the four corners of the screen frame 22 are connected to the screening box 21 through a spring 26 respectively.

[0045] In the above embodiment, the melon seeds will fall on the primary filter screen 24 after being discharged from the lower port of the mixing drum 4, and the melon seeds with large particles will remain on the primary filter screen 24, and the particles with particles smaller than the aperture of the primary filter screen 24 will fall on the bottom plate of the screen frame 22. The bottom plate of the inclined screen frame 22 is also inclined. Therefore, when the screen frame 22 as a whole vibrates with the vibration motor 25, the melon seeds with smaller apertures will move along the bottom plate of the screen frame 22 to the first discharge port 23, thereby completing the screening of melon seeds with different particle sizes.

[0046] Furthermore, if Figure 1 , Figure 3 and Figure 4 As shown, the screening mechanism 2 also includes a secondary filter screen 27 arranged above the primary filter screen 24 with the same inclination angle as the primary filter screen 24, the secondary filter screen 27 is fixedly connected to an upward extension section of the side wall of the screen frame 22 near the same end near one end of the support frame 1, the other end of the secondary filter screen 27 extends to the outside of the same end of the screen frame 22, and a second discharge port 28 is installed below the portion of the secondary filter screen 27 extending out of the screen frame 22;

[0047] An opposite side wall of the screen frame 22 in the width direction extends upward and is fixedly connected to the secondary filter screen 27;

[0048] A protective cover 29 is provided above the secondary filter screen 27, one end of the protective cover 29 is fixedly connected to one end of the screen frame 22 close to the support frame 1, and a material receiving port 210 is provided at the end of the protective cover 29; the material receiving port 210 is located below the lower port of the mixing drum 4, the protective cover 29 extends away from one end of the support frame 1 to the outside of the secondary filter screen 27, and a third material discharge port 211 is installed below the part of the protective cover 29 extending out of the secondary filter screen 27;

[0049] The aperture of the secondary filter 27 is larger than that of the primary filter.

[0050] In the above embodiment, the aperture of the secondary filter screen 27 of the present application is larger than the aperture of the primary filter screen 24, and the secondary filter screen 27 is located above the primary filter screen 24. After the melon seeds are added from the receiving port 210 on the upper side of the end where the protective cover 29 is higher, the melon seeds will first fall onto the secondary filter screen 27. Since the secondary filter screen 27, the primary filter screen 24, the screen frame 22 and the protective cover 29 are fixed together, and the bottom of the screen frame 22 is installed on the screening box 21 through the spring 26, the vibration motor 25 installed at the bottom of the screen frame 22 will vibrate the secondary filter screen 27, the primary filter screen 24, the screen frame 22 and the protective cover 29 together when working. The melon seeds on the secondary filter screen 27 whose size is smaller than the aperture of the secondary filter screen 27 will fall downward onto the primary filter screen 24, and the melon seeds whose size is larger than the secondary filter screen 27 will move along the surface of the secondary filter screen 27 to the third discharge port 211 with the vibration and then be discharged, that is, the workers can collect the largest melon seeds at the third discharge port 211. The first-level filter 24 can further screen the melon seeds that fall on it by vibration. The seeds that are larger than the aperture of the first-level filter 24 will move along the upper surface of the first-level filter 24 with the vibration until they reach the second discharge port 28 set at one end of the space between the second-level filter 27 and the first-level filter 24 away from the guide trough 5. The workers can collect the melon seeds with medium particle size at the second discharge port 28. The melon seeds screened by the first-level filter 24 will fall on the bottom plate of the screen frame 22, and then be discharged from the first discharge port 23 at the lowest point along the bottom plate of the screen frame 22, that is, the workers can collect the melon seeds with the smallest particle size at the first discharge port 23. Through the screening device of the present application, workers can screen out melon seeds of various specifications, which is convenient for subsequent classification and packaging.

[0051] Furthermore, if Figure 1 As shown, a dispersion plate 12 is installed in the material receiving port 210 .

[0052] In the above embodiments, a plurality of ribs are evenly arranged on the dispersion plate 12 . When the melon seeds fall from the lower port of the mixing drum 4 to the receiving port 210 , the ribs on the dispersion plate 12 can disperse the melon seeds so that the melon seeds fall evenly on the secondary filter screen 27 .

[0053] Furthermore, if Figure 1 As shown, an impurity diversion plate 13 is provided in the middle position above the protective cover 29 .

[0054] In the above embodiments, after the dust and dead leaves blown out from the mixing drum 4 by the blower 9 encounter the impurity diverter plate 13, a part of the lighter ones will be directly scattered from both sides of the impurity diverter plate 13 and then fall to the ground, and another part of the dust and dead leaves will fall onto the protective cover 29, and with the vibration of the protective cover 29, they will also fall to the ground from both sides of the impurity diverter plate 13. In this way, the light impurities separated by the blower 9 will not float too far, increasing the subsequent cleaning burden.

[0055] The implementation principle of this embodiment is: when workers need to remove impurities and screen the melon seeds, they first add the melon seeds into the feeding funnel 3, and the melon seeds will fall along the feeding funnel 3 onto the material guide trough 5, and then flow into the stirring drum 4 along the material guide trough 5. The melon seeds will be continuously lifted up and then fall down in the stirring drum 4, and will slowly flow along the axial direction of the stirring drum 4 to the receiving port 210 above the protective cover 29. During this process, the wind continuously blown by the blower 9 to the stirring drum 4 can separate impurities such as dead leaves and dust in the melon seeds, and the blown impurities will fall to the ground on both sides of the width direction of the screening mechanism 2 after encountering the impurity diverter plate 13. When the melon seeds pass through the dispersion plate 12 in the receiving port 210 of the protective cover 29, the ribs on the dispersion plate 12 will spread the melon seeds so that they fall evenly on the secondary filter screen 27. The secondary filter screen 27 will screen the melon seeds with smaller apertures than it to the primary filter screen 24 below through vibration, and the melon seeds with larger apertures than the secondary filter screen 27 will be discharged from the third discharge port 211 along the upper surface of the secondary filter screen 27 to the collection frame prepared in advance by the worker. After receiving the melon seeds screened by the secondary filter screen 27, the primary filter screen 24 will continue to screen these melon seeds through vibration, and the melon seeds with larger apertures than the primary filter screen 24 will move to the second discharge port 28 along the upper surface of the primary filter screen 24, and then be discharged from the second discharge port 28 to the corresponding collection frame, and the melon seeds with smaller apertures than the primary filter screen 24 will be discharged from the first discharge port 23 along the bottom plate of the screen frame 22 to the corresponding collection frame, so that the melon seeds are screened and separated.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A melon seed impurity removal and screening device, characterized in that: It comprises a support frame (1), a screening mechanism (2) is provided on one side of the support frame (1), a feeding funnel (3) is fixedly installed above one end of the support frame (1), and an inclined stirring roller (4) is provided on one side of the lower end of the feeding funnel (3); A material guide trough (5) is provided between the lower port of the feeding funnel (3) and the higher end port of the stirring drum (4), and the lower side of the material guide trough (5) is fixedly mounted on the supporting frame (1) via a plurality of legs (6); Both ends of the mixing drum (4) are respectively mounted on the support frame (1) via a support unit (7); one side of the mixing drum (4) is also connected to a power assembly (8); the power assembly (8) can drive the mixing drum (4) to rotate around its own axis; A blower (9) is provided below the feeding hopper (3) on a side away from the stirring drum (4); an air outlet of the blower (9) faces a higher end port of the stirring drum (4); and the blower (9) is fixedly mounted on the supporting frame (1) via a mounting platform (10).

2. The melon seed impurity removal and screening device according to claim 1, characterized in that: The support unit (7) comprises an annular flange (71) arranged on the outside of the mixing drum (4); a groove wheel (72) is respectively arranged on the opposite side of the lower end of the annular flange (71); the annular flange (71) is placed in the grooves of the two groove wheels (72); the annular flange (71) can freely rotate around its own axis above the groove wheels (72); the groove wheels (72) are movably mounted on the support frame (1) through a bracket (73).

3. The melon seed impurity removal and screening device according to claim 2, characterized in that: The power assembly (8) comprises a gear ring (81), the gear ring (81) is located between two corresponding annular flanges (71) and is fixedly sleeved on the mixing drum (4), a gear (82) is meshed on one side of the gear ring (81), the center of the gear (82) is fixedly connected to the output end of the drive motor (83), and the housing of the drive motor (83) is fixedly mounted on the support frame (1) through a motor bracket (84); a rotating shaft support plate (85) is sleeved on the output shaft of the drive motor (83) and the two are rotatably connected, and the lower end of the rotating shaft support plate (85) is fixedly connected to the motor bracket (84).

4. The melon seed impurity removal and screening device according to claim 1, characterized in that: A plurality of stirring blades (11) are arranged inside the stirring drum (4); the plurality of stirring blades (11) are evenly arranged along the inner wall of the stirring drum (4); and the plurality of stirring blades (11) are fixedly connected to the inner wall of the stirring drum (4).

5. The melon seed impurity removal and screening device according to any one of claims 1 to 4, characterized in that: The screening mechanism (2) comprises a screening box (21), a screening frame (22) is provided on the top of the screening box (21), and the screening frame (22) is arranged obliquely, and the upper part of the higher end of the screening frame (22) is located below the port of the lower end of the mixing drum (4); a first discharge port (23) is provided on one side below the lower end of the screening frame (22); A primary filter screen (24) is installed at the upper end of the screen frame (22); a vibration motor (25) is installed at the bottom of the screen frame (22), and the four corners of the screen frame (22) are connected to the screening box (21) via a spring (26) respectively.

6. The melon seed impurity removal and screening device according to claim 5, characterized in that: The screening mechanism (2) further comprises a secondary filter screen (27) arranged above the primary filter screen (24) and having the same inclination angle as the primary filter screen (24); the secondary filter screen (27) is fixedly connected to an upwardly extending section of a side wall of the screen frame (22) near one end of the supporting frame (1); the other end of the secondary filter screen (27) extends to the outside of the same end of the screen frame (22); and a second discharge port (28) is installed below the portion of the secondary filter screen (27) extending out of the screen frame (22); An opposite side wall in the width direction of the screen frame (22) extends upward and is fixedly connected to the secondary filter screen (27); A protective cover (29) is provided above the secondary filter screen (27), one end of the protective cover (29) is fixedly connected to one end of the screen frame (22) close to the support frame (1), and a material receiving port (210) is provided at this end of the protective cover (29); the material receiving port (210) is located below a lower port of the stirring drum (4), the protective cover (29) extends away from one end of the support frame (1) to the outside of the secondary filter screen (27), and a third material discharge port (211) is installed below the portion of the protective cover (29) extending out of the secondary filter screen (27); The aperture of the secondary filter (27) is larger than the aperture of the primary filter.

7. The melon seed impurity removal and screening device according to claim 6, characterized in that: A dispersion plate (12) is installed in the material receiving port (210).

8. The melon seed impurity removal and screening device according to claim 6, characterized in that: An impurity diversion plate (13) is provided in the middle position above the protective cover (29).

Citation Information

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